hg/bck2brwsr: rt/vm/src/main/java/org/apidesign/vm4brwsr/ByteCodeToJavaScript.java@260d731c9504

     1 /**

     2  * Back 2 Browser Bytecode Translator

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

     4  *

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

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

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

     8  *

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

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

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

    12  * GNU General Public License for more details.

    13  *

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

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

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

    17  */

    18 package org.apidesign.vm4brwsr;

    20 import java.io.IOException;

    21 import java.io.InputStream;

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

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

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

    26  *

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

    28  */

    29 abstract class ByteCodeToJavaScript implements Appendable {

    30     private ClassData jc;

    31     private final Appendable out;

    32     private final StringArray classRefs = new StringArray();

    33     private boolean outChanged;

    34     private boolean callbacks;

    36     protected ByteCodeToJavaScript(Appendable out) {

    37         this.out = out;

    38     }

    40     @Override

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

    42         out.append(csq);

    43         outChanged = true;

    44         return this;

    45     }

    47     @Override

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

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

    50         outChanged = true;

    51         return this;

    52     }

    54     @Override

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

    56         out.append(c);

    57         outChanged = true;

    58         return this;

    59     }

    61     /* Collects additional required resources.

    62      *

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

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

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

    66      */

    67     protected abstract boolean requireReference(String internalClassName);

    69     /*

    70      * @param resourcePath name of resources to read

    71      */

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

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

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

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

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

    79      *

    80      * @param className suggested name of the class

    81      */

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

    83         return className + " = ";

    84     }

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

    86         return classOperation;

    87     }

    89     final String accessClassFalse(String classOperation) {

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

    91             return "c";

    92         }

    93         classRefs.addIfMissing(classOperation);

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

    95     }

    97     protected String accessField(String object, String mangledName,

    98                                  String[] fieldInfoName) throws IOException {

    99         return object + "." + mangledName;

   100     }

   102     protected String accessStaticMethod(

   103                              String object,

   104                              String mangledName,

   105                              String[] fieldInfoName) throws IOException {

   106         return object + "." + mangledName;

   107     }

   109     protected String accessVirtualMethod(

   110             String object,

   111             String mangledName,

   112             String[] fieldInfoName,

   113             int params

   114     ) throws IOException {

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

   116     }

   118     protected void declaredClass(ClassData classData, String mangledName)

   119             throws IOException {

   120     }

   122     protected void declaredField(FieldData fieldData,

   123                                  String destObject,

   124                                  String mangledName) throws IOException {

   125     }

   127     protected void declaredMethod(MethodData methodData,

   128                                   String destObject,

   129                                   String mangledName) throws IOException {

   130     }

   132     /** Prints out a debug message.

   133      *

   134      * @param msg the message

   135      * @return true if the message has been printed

   136      * @throws IOException

   137      */

   138     boolean debug(String msg) throws IOException {

   139         append(msg);

   140         return true;

   141     }

   143     /**

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

   145      *

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

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

   148      *

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

   150      */

   152     public String compile(InputStream classFile) throws IOException {

   153         return compile(new ClassData(classFile));

   154     }

   156     protected String compile(ClassData classData) throws IOException {

   157         this.jc = classData;

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

   159         try {

   160             return compileImpl(cn);

   161         } catch (IOException ex) {

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

   163         }

   164     }

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

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

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

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

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

   171             );

   172         }

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

   174         {

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

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

   177                 "resource", "processByteCode"

   178             );

   179             if (arr != null) {

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

   181                     requireScript(arr[0]);

   182                 }

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

   184                     return null;

   185                 }

   186             }

   187         }

   188         final String jsResource;

   189         {

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

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

   192                 "value"

   193             );

   194             if (arr != null) {

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

   196                     jsResource = arr[0];

   197                 } else {

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

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

   200                 }

   201             } else {

   202                 jsResource = null;

   203             }

   204         }

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

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

   207             "container", "prototype"

   208         );

   209         StringArray toInitilize = new StringArray();

   210         final String className = className(jc);

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

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

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

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

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

   216         if (proto == null) {

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

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

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

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

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

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

   223         } else {

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

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

   226                 proto[0] = "p";

   227             }

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

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

   230         }

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

   232             if (v.isStatic()) {

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

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

   235                         continue;

   236                     }

   237                 }

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

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

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

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

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

   243             } else {

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

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

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

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

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

   249                     .append("; };");

   250             }

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

   253         }

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

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

   256             if (javaScriptOnly(onlyArr)) continue;

   257             String destObject;

   258             String mn;

   259             append("\n    ");

   260             if (m.isStatic()) {

   261                 destObject = "c";

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

   263             } else {

   264                 if (m.isConstructor()) {

   265                     destObject = "CLS";

   266                     mn = generateInstanceMethod(destObject, m);

   267                 } else {

   268                     destObject = "c";

   269                     mn = generateInstanceMethod(destObject, m);

   270                 }

   271             }

   272             declaredMethod(m, destObject, mn);

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

   274             if (runAnno != null) {

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

   276                 generateAnno(jc, runAnno);

   277                 append("\n    };");

   278             }

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

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

   281         }

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

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

   284         String instOfName = "$instOf_" + className;

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

   286         if (jc.isInterface()) {

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

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

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

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

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

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

   293                 }

   294             }

   295         }

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

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

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

   299             requireReference(superInterface);

   300         }

   301         append("\n    }");

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

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

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

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

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

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

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

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

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

   311         {

   312             boolean first = true;

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

   314                 if (!first) {

   315                     append(",");

   316                 }

   317                 requireReference(intrfc);

   318                 String mangledIface = mangleClassName(intrfc);

   319                 append("\n        ");

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

   321                 first = false;

   322             }

   323         }

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

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

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

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

   328         if (classAnno != null) {

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

   330             generateAnno(jc, classAnno);

   331             append("\n    };");

   332         }

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

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

   335         }

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

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

   338         }

   339         classRefs.clear();

   341         if (jsResource != null) {

   342             requireResource(jsResource);

   343         }

   345         append("\n  }");

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

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

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

   349         append("\n    }");

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

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

   352             if (javaScriptOnly(onlyArr)) continue;

   353             if (!v.isStatic()) {

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

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

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

   357             }

   358         }

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

   360         append("\n  }");

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

   362         append("\n};");

   364         declaredClass(jc, className);

   366 //        StringBuilder sb = new StringBuilder();

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

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

   369 //        }

   370         return "";

   371     }

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

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

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

   376             "name", "value"

   377         );

   378         if (only != null) {

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

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

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

   382             }

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

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

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

   386             }

   387             return true;

   388         }

   389         return false;

   390     }

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

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

   393         if (jsb != null) {

   394             return jsb;

   395         }

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

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

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

   399             if (defineProp) {

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

   401             } else {

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

   403             }

   404         }

   405         return mn;

   406     }

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

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

   410         if (jsb != null) {

   411             return jsb;

   412         }

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

   414         generateMethod(destObject, mn, m);

   415         return mn;

   416     }

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

   419             throws IOException {

   420         final StackMapIterator stackMapIterator = m.createStackMapIterator();

   421         TrapDataIterator trap = m.getTrapDataIterator();

   422         final LocalsMapper lmapper =

   423                 new LocalsMapper(stackMapIterator.getArguments());

   425         boolean defineProp =

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

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

   429         if (defineProp) {

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

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

   432         } else {

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

   434         }

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

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

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

   439         if (byteCodes == null) {

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

   441                .append(jc.getClassName()).append('.')

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

   443             if (defineProp) {

   444                 append("}});");

   445             } else {

   446                 append("};");

   447             }

   448             return defineProp;

   449         }

   451         final StackMapper smapper = new StackMapper();

   453         if (!m.isStatic()) {

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

   455         }

   457         int lastStackFrame;

   458         TrapData[] previousTrap = null;

   459         boolean wide = false;

   460         boolean didBranches;

   461         if (stackMapIterator.isEmpty()) {

   462             didBranches = false;

   463             lastStackFrame = 0;

   464         } else {

   465             didBranches = true;

   466             lastStackFrame = -1;

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

   468         }

   470         int openBraces = 0;

   471         int topMostLabel = 0;

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

   473             int prev = i;

   474             outChanged = false;

   475             stackMapIterator.advanceTo(i);

   476             boolean changeInCatch = trap.advanceTo(i);

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

   478                 if (previousTrap != null) {

   479                     generateCatch(previousTrap, i, topMostLabel);

   480                     previousTrap = null;

   481                 }

   482             }

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

   484                 smapper.flush(this);

   485                 if (i != 0) {

   486                     append("    }\n");

   487                 }

   488                 if (openBraces > 64) {

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

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

   491                     }

   492                     openBraces = 1;

   493                     topMostLabel = i;

   494                 }

   496                 lastStackFrame = stackMapIterator.getFrameIndex();

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

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

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

   500                 openBraces++;

   501                 changeInCatch = true;

   502             } else {

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

   504             }

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

   506                 append("try {");

   507                 previousTrap = trap.current();

   508             }

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

   510             switch (c) {

   511                 case opc_aload_0:

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

   513                     break;

   514                 case opc_iload_0:

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

   516                     break;

   517                 case opc_lload_0:

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

   519                     break;

   520                 case opc_fload_0:

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

   522                     break;

   523                 case opc_dload_0:

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

   525                     break;

   526                 case opc_aload_1:

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

   528                     break;

   529                 case opc_iload_1:

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

   531                     break;

   532                 case opc_lload_1:

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

   534                     break;

   535                 case opc_fload_1:

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

   537                     break;

   538                 case opc_dload_1:

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

   540                     break;

   541                 case opc_aload_2:

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

   543                     break;

   544                 case opc_iload_2:

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

   546                     break;

   547                 case opc_lload_2:

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

   549                     break;

   550                 case opc_fload_2:

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

   552                     break;

   553                 case opc_dload_2:

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

   555                     break;

   556                 case opc_aload_3:

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

   558                     break;

   559                 case opc_iload_3:

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

   561                     break;

   562                 case opc_lload_3:

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

   564                     break;

   565                 case opc_fload_3:

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

   567                     break;

   568                 case opc_dload_3:

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

   570                     break;

   571                 case opc_iload: {

   572                     ++i;

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

   574                                           : readUByte(byteCodes, i);

   575                     wide = false;

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

   577                     break;

   578                 }

   579                 case opc_lload: {

   580                     ++i;

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

   582                                           : readUByte(byteCodes, i);

   583                     wide = false;

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

   585                     break;

   586                 }

   587                 case opc_fload: {

   588                     ++i;

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

   590                                           : readUByte(byteCodes, i);

   591                     wide = false;

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

   593                     break;

   594                 }

   595                 case opc_dload: {

   596                     ++i;

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

   598                                           : readUByte(byteCodes, i);

   599                     wide = false;

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

   601                     break;

   602                 }

   603                 case opc_aload: {

   604                     ++i;

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

   606                                           : readUByte(byteCodes, i);

   607                     wide = false;

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

   609                     break;

   610                 }

   611                 case opc_istore: {

   612                     ++i;

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

   614                                           : readUByte(byteCodes, i);

   615                     wide = false;

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

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

   618                     break;

   619                 }

   620                 case opc_lstore: {

   621                     ++i;

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

   623                                           : readUByte(byteCodes, i);

   624                     wide = false;

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

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

   627                     break;

   628                 }

   629                 case opc_fstore: {

   630                     ++i;

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

   632                                           : readUByte(byteCodes, i);

   633                     wide = false;

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

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

   636                     break;

   637                 }

   638                 case opc_dstore: {

   639                     ++i;

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

   641                                           : readUByte(byteCodes, i);

   642                     wide = false;

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

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

   645                     break;

   646                 }

   647                 case opc_astore: {

   648                     ++i;

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

   650                                           : readUByte(byteCodes, i);

   651                     wide = false;

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

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

   654                     break;

   655                 }

   656                 case opc_astore_0:

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

   658                     break;

   659                 case opc_istore_0:

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

   661                     break;

   662                 case opc_lstore_0:

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

   664                     break;

   665                 case opc_fstore_0:

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

   667                     break;

   668                 case opc_dstore_0:

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

   670                     break;

   671                 case opc_astore_1:

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

   673                     break;

   674                 case opc_istore_1:

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

   676                     break;

   677                 case opc_lstore_1:

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

   679                     break;

   680                 case opc_fstore_1:

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

   682                     break;

   683                 case opc_dstore_1:

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

   685                     break;

   686                 case opc_astore_2:

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

   688                     break;

   689                 case opc_istore_2:

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

   691                     break;

   692                 case opc_lstore_2:

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

   694                     break;

   695                 case opc_fstore_2:

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

   697                     break;

   698                 case opc_dstore_2:

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

   700                     break;

   701                 case opc_astore_3:

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

   703                     break;

   704                 case opc_istore_3:

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

   706                     break;

   707                 case opc_lstore_3:

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

   709                     break;

   710                 case opc_fstore_3:

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

   712                     break;

   713                 case opc_dstore_3:

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

   715                     break;

   716                 case opc_iadd:

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

   718                     break;

   719                 case opc_ladd:

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

   721                     break;

   722                 case opc_fadd:

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

   724                     break;

   725                 case opc_dadd:

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

   727                     break;

   728                 case opc_isub:

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

   730                     break;

   731                 case opc_lsub:

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

   733                     break;

   734                 case opc_fsub:

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

   736                     break;

   737                 case opc_dsub:

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

   739                     break;

   740                 case opc_imul:

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

   742                     break;

   743                 case opc_lmul:

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

   745                     break;

   746                 case opc_fmul:

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

   748                     break;

   749                 case opc_dmul:

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

   751                     break;

   752                 case opc_idiv:

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

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

   755                     break;

   756                 case opc_ldiv:

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

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

   759                     break;

   760                 case opc_fdiv:

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

   762                     break;

   763                 case opc_ddiv:

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

   765                     break;

   766                 case opc_irem:

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

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

   769                     break;

   770                 case opc_lrem:

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

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

   773                     break;

   774                 case opc_frem:

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

   776                     break;

   777                 case opc_drem:

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

   779                     break;

   780                 case opc_iand:

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

   782                     break;

   783                 case opc_land:

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

   785                     break;

   786                 case opc_ior:

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

   788                     break;

   789                 case opc_lor:

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

   791                     break;

   792                 case opc_ixor:

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

   794                     break;

   795                 case opc_lxor:

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

   797                     break;

   798                 case opc_ineg:

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

   800                     break;

   801                 case opc_lneg:

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

   803                     break;

   804                 case opc_fneg:

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

   806                     break;

   807                 case opc_dneg:

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

   809                     break;

   810                 case opc_ishl:

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

   812                     break;

   813                 case opc_lshl:

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

   815                     break;

   816                 case opc_ishr:

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

   818                     break;

   819                 case opc_lshr:

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

   821                     break;

   822                 case opc_iushr:

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

   824                     break;

   825                 case opc_lushr:

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

   827                     break;

   828                 case opc_iinc: {

   829                     ++i;

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

   831                                              : readUByte(byteCodes, i);

   832                     ++i;

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

   834                                             : byteCodes[i];

   835                     wide = false;

   836                     if (incrBy == 1) {

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

   838                     } else {

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

   840                              lmapper.getI(varIndx),

   841                              Integer.toString(incrBy));

   842                     }

   843                     break;

   844                 }

   845                 case opc_return:

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

   847                     break;

   848                 case opc_ireturn:

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

   850                     break;

   851                 case opc_lreturn:

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

   853                     break;

   854                 case opc_freturn:

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

   856                     break;

   857                 case opc_dreturn:

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

   859                     break;

   860                 case opc_areturn:

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

   862                     break;

   863                 case opc_i2l:

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

   865                     break;

   866                 case opc_i2f:

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

   868                     break;

   869                 case opc_i2d:

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

   871                     break;

   872                 case opc_l2i:

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

   874                     break;

   875                     // max int check?

   876                 case opc_l2f:

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

   878                     break;

   879                 case opc_l2d:

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

   881                     break;

   882                 case opc_f2d:

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

   884                          smapper.getF(0));

   885                     break;

   886                 case opc_d2f:

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

   888                          smapper.getD(0));

   889                     break;

   890                 case opc_f2i:

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

   892                          smapper.getF(0));

   893                     break;

   894                 case opc_f2l:

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

   896                          smapper.getF(0));

   897                     break;

   898                 case opc_d2i:

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

   900                          smapper.getD(0));

   901                     break;

   902                 case opc_d2l:

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

   904                     break;

   905                 case opc_i2b:

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

   907                     break;

   908                 case opc_i2c:

   909                 case opc_i2s:

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

   911                     break;

   912                 case opc_aconst_null:

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

   914                     break;

   915                 case opc_iconst_m1:

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

   917                     break;

   918                 case opc_iconst_0:

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

   920                     break;

   921                 case opc_dconst_0:

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

   923                     break;

   924                 case opc_lconst_0:

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

   926                     break;

   927                 case opc_fconst_0:

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

   929                     break;

   930                 case opc_iconst_1:

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

   932                     break;

   933                 case opc_lconst_1:

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

   935                     break;

   936                 case opc_fconst_1:

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

   938                     break;

   939                 case opc_dconst_1:

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

   941                     break;

   942                 case opc_iconst_2:

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

   944                     break;

   945                 case opc_fconst_2:

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

   947                     break;

   948                 case opc_iconst_3:

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

   950                     break;

   951                 case opc_iconst_4:

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

   953                     break;

   954                 case opc_iconst_5:

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

   956                     break;

   957                 case opc_ldc: {

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

   959                     String v = encodeConstant(indx);

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

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

   962                     break;

   963                 }

   964                 case opc_ldc_w:

   965                 case opc_ldc2_w: {

   966                     int indx = readUShortArg(byteCodes, i);

   967                     i += 2;

   968                     String v = encodeConstant(indx);

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

   970                     if (type == VarType.LONG) {

   971                         final Long lv = new Long(v);

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

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

   974                         if (hi == 0) {

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

   976                         } else {

   977                             smapper.assign(this, VarType.LONG,

   978                                 "0x" + Integer.toHexString(hi) + ".next32(0x" +

   979                                     Integer.toHexString(low) + ")"

   980                             );

   981                         }

   982                     } else {

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

   984                     }

   985                     break;

   986                 }

   987                 case opc_lcmp:

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

   989                     break;

   990                 case opc_fcmpl:

   991                 case opc_fcmpg:

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

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

   994                     break;

   995                 case opc_dcmpl:

   996                 case opc_dcmpg:

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

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

   999                     break;

  1000                 case opc_if_acmpeq:

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

  1002                                    "===", topMostLabel);

  1003                     break;

  1004                 case opc_if_acmpne:

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

  1006                                    "!==", topMostLabel);

  1007                     break;

  1008                 case opc_if_icmpeq:

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

  1010                                    "==", topMostLabel);

  1011                     break;

  1012                 case opc_ifeq: {

  1013                     int indx = i + readShortArg(byteCodes, i);

  1014                     emitIf(smapper, this, "if ((@1) == 0) ",

  1015                          smapper.popI(), i, indx, topMostLabel);

  1016                     i += 2;

  1017                     break;

  1018                 }

  1019                 case opc_ifne: {

  1020                     int indx = i + readShortArg(byteCodes, i);

  1021                     emitIf(smapper, this, "if ((@1) != 0) ",

  1022                          smapper.popI(), i, indx, topMostLabel);

  1023                     i += 2;

  1024                     break;

  1025                 }

  1026                 case opc_iflt: {

  1027                     int indx = i + readShortArg(byteCodes, i);

  1028                     emitIf(smapper, this, "if ((@1) < 0) ",

  1029                          smapper.popI(), i, indx, topMostLabel);

  1030                     i += 2;

  1031                     break;

  1032                 }

  1033                 case opc_ifle: {

  1034                     int indx = i + readShortArg(byteCodes, i);

  1035                     emitIf(smapper, this, "if ((@1) <= 0) ",

  1036                          smapper.popI(), i, indx, topMostLabel);

  1037                     i += 2;

  1038                     break;

  1039                 }

  1040                 case opc_ifgt: {

  1041                     int indx = i + readShortArg(byteCodes, i);

  1042                     emitIf(smapper, this, "if ((@1) > 0) ",

  1043                          smapper.popI(), i, indx, topMostLabel);

  1044                     i += 2;

  1045                     break;

  1046                 }

  1047                 case opc_ifge: {

  1048                     int indx = i + readShortArg(byteCodes, i);

  1049                     emitIf(smapper, this, "if ((@1) >= 0) ",

  1050                          smapper.popI(), i, indx, topMostLabel);

  1051                     i += 2;

  1052                     break;

  1053                 }

  1054                 case opc_ifnonnull: {

  1055                     int indx = i + readShortArg(byteCodes, i);

  1056                     emitIf(smapper, this, "if ((@1) !== null) ",

  1057                          smapper.popA(), i, indx, topMostLabel);

  1058                     i += 2;

  1059                     break;

  1060                 }

  1061                 case opc_ifnull: {

  1062                     int indx = i + readShortArg(byteCodes, i);

  1063                     emitIf(smapper, this, "if ((@1) === null) ",

  1064                          smapper.popA(), i, indx, topMostLabel);

  1065                     i += 2;

  1066                     break;

  1067                 }

  1068                 case opc_if_icmpne:

  1069                     i = generateIf(smapper, byteCodes, i, smapper.popI(), smapper.popI(),

  1070                                    "!=", topMostLabel);

  1071                     break;

  1072                 case opc_if_icmplt:

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

  1074                                    "<", topMostLabel);

  1075                     break;

  1076                 case opc_if_icmple:

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

  1078                                    "<=", topMostLabel);

  1079                     break;

  1080                 case opc_if_icmpgt:

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

  1082                                    ">", topMostLabel);

  1083                     break;

  1084                 case opc_if_icmpge:

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

  1086                                    ">=", topMostLabel);

  1087                     break;

  1088                 case opc_goto: {

  1089                     smapper.flush(this);

  1090                     int indx = i + readShortArg(byteCodes, i);

  1091                     goTo(this, i, indx, topMostLabel);

  1092                     i += 2;

  1093                     break;

  1094                 }

  1095                 case opc_lookupswitch: {

  1096                     i = generateLookupSwitch(i, byteCodes, smapper, topMostLabel);

  1097                     break;

  1098                 }

  1099                 case opc_tableswitch: {

  1100                     i = generateTableSwitch(i, byteCodes, smapper, topMostLabel);

  1101                     break;

  1102                 }

  1103                 case opc_invokeinterface: {

  1104                     i = invokeVirtualMethod(byteCodes, i, smapper) + 2;

  1105                     break;

  1106                 }

  1107                 case opc_invokevirtual:

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

  1109                     break;

  1110                 case opc_invokespecial:

  1111                     i = invokeStaticMethod(byteCodes, i, smapper, false);

  1112                     break;

  1113                 case opc_invokestatic:

  1114                     i = invokeStaticMethod(byteCodes, i, smapper, true);

  1115                     break;

  1116                 case opc_invokedynamic: {

  1117                     int indx = readUShortArg(byteCodes, i);

  1118                     println("invoke dynamic: " + indx);

  1119                     ByteCodeParser.CPX2 c2 = jc.getCpoolEntry(indx);

  1120                     BootMethodData bm = jc.getBootMethod(c2.cpx1);

  1121                     CPX2 methodHandle = jc.getCpoolEntry(bm.method);

  1122                     println("  type: " + methodHandle.cpx1);

  1123                     String[] mi = jc.getFieldInfoName(methodHandle.cpx2);

  1124                     String mcn = mangleClassName(mi[0]);

  1125                     char[] returnType = {'V'};

  1126                     StringBuilder cnt = new StringBuilder();

  1127                     String mn = findMethodName(mi, cnt, returnType);

  1128                     StringBuilder sb = new StringBuilder();

  1129                     sb.append("We don't handle invokedynamic, need to preprocess ahead-of-time:\n");

  1130                     sb.append("  mi[0]: ").append(mi[0]).append("\n");

  1131                     sb.append("  mi[1]: ").append(mi[1]).append("\n");

  1132                     sb.append("  mi[2]: ").append(mi[2]).append("\n");

  1133                     sb.append("  mn   : ").append(mn).append("\n");

  1134                     sb.append("  name and type: ").append(jc.stringValue(c2.cpx2, true)).append("\n");

  1135                     throw new IOException(sb.toString());

  1136                     /*

  1137                     CPX2 nameAndType = jc.getCpoolEntry(c2.cpx2);

  1138                     String type = jc.StringValue(nameAndType.cpx2);

  1139                     String object = accessClass(mcn) + "(false)";

  1140                     if (mn.startsWith("cons_")) {

  1141                         object += ".constructor";

  1142                     }

  1143                     append("var metHan = ");

  1144                     append(accessStaticMethod(object, mn, mi));

  1145                     append('(');

  1146                     String lookup = accessClass("java_lang_invoke_MethodHandles") + "(false).findFor__Ljava_lang_invoke_MethodHandles$Lookup_2Ljava_lang_Class_2(CLS.$class)";

  1147                     append(lookup);

  1148                     append(", '").append(mi[1]).append("', ");

  1149                     String methodType = accessClass("java_lang_invoke_MethodType") + "(false).fromMethodDescriptorString__Ljava_lang_invoke_MethodType_2Ljava_lang_String_2Ljava_lang_ClassLoader_2(";

  1150                     append(methodType).append("'").append(type).append("', null)");

  1151 //                    if (numArguments > 0) {

  1152 //                        append(vars[0]);

  1153 //                        for (int j = 1; j < numArguments; ++j) {

  1154 //                            append(", ");

  1155 //                            append(vars[j]);

  1156 //                        }

  1157 //                    }

  1158                     append(");");

  1159                     emit(smapper, this, "throw 'Invoke dynamic: ' + @1 + ': ' + metHan;", "" + indx);

  1160                     i += 4;

  1161                     break;

  1162                     */

  1163                 }

  1164                 case opc_new: {

  1165                     int indx = readUShortArg(byteCodes, i);

  1166                     String ci = jc.getClassName(indx);

  1167                     emit(smapper, this, "var @1 = new @2;",

  1168                          smapper.pushA(), accessClass(mangleClassName(ci)));

  1169                     addReference(ci);

  1170                     i += 2;

  1171                     break;

  1172                 }

  1173                 case opc_newarray:

  1174                     int atype = readUByte(byteCodes, ++i);

  1175                     generateNewArray(atype, smapper);

  1176                     break;

  1177                 case opc_anewarray: {

  1178                     int type = readUShortArg(byteCodes, i);

  1179                     i += 2;

  1180                     generateANewArray(type, smapper);

  1181                     break;

  1182                 }

  1183                 case opc_multianewarray: {

  1184                     int type = readUShortArg(byteCodes, i);

  1185                     i += 2;

  1186                     i = generateMultiANewArray(type, byteCodes, i, smapper);

  1187                     break;

  1188                 }

  1189                 case opc_arraylength:

  1190                     smapper.replace(this, VarType.INTEGER, "(@1).length", smapper.getA(0));

  1191                     break;

  1192                 case opc_lastore:

  1193                     emit(smapper, this, "Array.at(@3, @2, @1);",

  1194                          smapper.popL(), smapper.popI(), smapper.popA());

  1195                     break;

  1196                 case opc_fastore:

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

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

  1199                     break;

  1200                 case opc_dastore:

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

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

  1203                     break;

  1204                 case opc_aastore:

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

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

  1207                     break;

  1208                 case opc_iastore:

  1209                 case opc_bastore:

  1210                 case opc_castore:

  1211                 case opc_sastore:

  1212                     emit(smapper, this, "Array.at(@3, @2, @1);",

  1213                          smapper.popI(), smapper.popI(), smapper.popA());

  1214                     break;

  1215                 case opc_laload:

  1216                     smapper.replace(this, VarType.LONG, "Array.at(@2, @1)",

  1217                          smapper.popI(), smapper.getA(0));

  1218                     break;

  1219                 case opc_faload:

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

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

  1222                     break;

  1223                 case opc_daload:

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

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

  1226                     break;

  1227                 case opc_aaload:

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

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

  1230                     break;

  1231                 case opc_iaload:

  1232                 case opc_baload:

  1233                 case opc_caload:

  1234                 case opc_saload:

  1235                     smapper.replace(this, VarType.INTEGER, "Array.at(@2, @1)",

  1236                          smapper.popI(), smapper.getA(0));

  1237                     break;

  1238                 case opc_pop:

  1239                 case opc_pop2:

  1240                     smapper.pop(1);

  1241                     debug("/* pop */");

  1242                     break;

  1243                 case opc_dup: {

  1244                     final Variable v = smapper.get(0);

  1245                     if (smapper.isDirty()) {

  1246                         emit(smapper, this, "var @1 = @2;", smapper.pushT(v.getType()), v);

  1247                     } else {

  1248                         smapper.assign(this, v.getType(), v);

  1249                     }

  1250                     break;

  1251                 }

  1252                 case opc_dup2: {

  1253                     final Variable vi1 = smapper.get(0);

  1255                     if (vi1.isCategory2()) {

  1256                         emit(smapper, this, "var @1 = @2;",

  1257                              smapper.pushT(vi1.getType()), vi1);

  1258                     } else {

  1259                         final Variable vi2 = smapper.get(1);

  1260                         emit(smapper, this, "var @1 = @2, @3 = @4;",

  1261                              smapper.pushT(vi2.getType()), vi2,

  1262                              smapper.pushT(vi1.getType()), vi1);

  1263                     }

  1264                     break;

  1265                 }

  1266                 case opc_dup_x1: {

  1267                     final Variable vi1 = smapper.pop(this);

  1268                     final Variable vi2 = smapper.pop(this);

  1269                     final Variable vo3 = smapper.pushT(vi1.getType());

  1270                     final Variable vo2 = smapper.pushT(vi2.getType());

  1271                     final Variable vo1 = smapper.pushT(vi1.getType());

  1273                     emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6;",

  1274                          vo1, vi1, vo2, vi2, vo3, vo1);

  1275                     break;

  1276                 }

  1277                 case opc_dup2_x1: {

  1278                     final Variable vi1 = smapper.pop(this);

  1279                     final Variable vi2 = smapper.pop(this);

  1281                     if (vi1.isCategory2()) {

  1282                         final Variable vo3 = smapper.pushT(vi1.getType());

  1283                         final Variable vo2 = smapper.pushT(vi2.getType());

  1284                         final Variable vo1 = smapper.pushT(vi1.getType());

  1286                         emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6;",

  1287                              vo1, vi1, vo2, vi2, vo3, vo1);

  1288                     } else {

  1289                         final Variable vi3 = smapper.pop(this);

  1290                         final Variable vo5 = smapper.pushT(vi2.getType());

  1291                         final Variable vo4 = smapper.pushT(vi1.getType());

  1292                         final Variable vo3 = smapper.pushT(vi3.getType());

  1293                         final Variable vo2 = smapper.pushT(vi2.getType());

  1294                         final Variable vo1 = smapper.pushT(vi1.getType());

  1296                         emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6,",

  1297                              vo1, vi1, vo2, vi2, vo3, vi3);

  1298                         emit(smapper, this, " @1 = @2, @3 = @4;",

  1299                              vo4, vo1, vo5, vo2);

  1300                     }

  1301                     break;

  1302                 }

  1303                 case opc_dup_x2: {

  1304                     final Variable vi1 = smapper.pop(this);

  1305                     final Variable vi2 = smapper.pop(this);

  1307                     if (vi2.isCategory2()) {

  1308                         final Variable vo3 = smapper.pushT(vi1.getType());

  1309                         final Variable vo2 = smapper.pushT(vi2.getType());

  1310                         final Variable vo1 = smapper.pushT(vi1.getType());

  1312                         emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6;",

  1313                              vo1, vi1, vo2, vi2, vo3, vo1);

  1314                     } else {

  1315                         final Variable vi3 = smapper.pop(this);

  1316                         final Variable vo4 = smapper.pushT(vi1.getType());

  1317                         final Variable vo3 = smapper.pushT(vi3.getType());

  1318                         final Variable vo2 = smapper.pushT(vi2.getType());

  1319                         final Variable vo1 = smapper.pushT(vi1.getType());

  1321                         emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6, @7 = @8;",

  1322                              vo1, vi1, vo2, vi2, vo3, vi3, vo4, vo1);

  1323                     }

  1324                     break;

  1325                 }

  1326                 case opc_dup2_x2: {

  1327                     final Variable vi1 = smapper.pop(this);

  1328                     final Variable vi2 = smapper.pop(this);

  1330                     if (vi1.isCategory2()) {

  1331                         if (vi2.isCategory2()) {

  1332                             final Variable vo3 = smapper.pushT(vi1.getType());

  1333                             final Variable vo2 = smapper.pushT(vi2.getType());

  1334                             final Variable vo1 = smapper.pushT(vi1.getType());

  1336                             emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6;",

  1337                                  vo1, vi1, vo2, vi2, vo3, vo1);

  1338                         } else {

  1339                             final Variable vi3 = smapper.pop(this);

  1340                             final Variable vo4 = smapper.pushT(vi1.getType());

  1341                             final Variable vo3 = smapper.pushT(vi3.getType());

  1342                             final Variable vo2 = smapper.pushT(vi2.getType());

  1343                             final Variable vo1 = smapper.pushT(vi1.getType());

  1345                             emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6, @7 = @8;",

  1346                                  vo1, vi1, vo2, vi2, vo3, vi3, vo4, vo1);

  1347                         }

  1348                     } else {

  1349                         final Variable vi3 = smapper.pop(this);

  1351                         if (vi3.isCategory2()) {

  1352                             final Variable vo5 = smapper.pushT(vi2.getType());

  1353                             final Variable vo4 = smapper.pushT(vi1.getType());

  1354                             final Variable vo3 = smapper.pushT(vi3.getType());

  1355                             final Variable vo2 = smapper.pushT(vi2.getType());

  1356                             final Variable vo1 = smapper.pushT(vi1.getType());

  1358                             emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6,",

  1359                                  vo1, vi1, vo2, vi2, vo3, vi3);

  1360                             emit(smapper, this, " @1 = @2, @3 = @4;",

  1361                                  vo4, vo1, vo5, vo2);

  1362                         } else {

  1363                             final Variable vi4 = smapper.pop(this);

  1364                             final Variable vo6 = smapper.pushT(vi2.getType());

  1365                             final Variable vo5 = smapper.pushT(vi1.getType());

  1366                             final Variable vo4 = smapper.pushT(vi4.getType());

  1367                             final Variable vo3 = smapper.pushT(vi3.getType());

  1368                             final Variable vo2 = smapper.pushT(vi2.getType());

  1369                             final Variable vo1 = smapper.pushT(vi1.getType());

  1371                             emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6, @7 = @8,",

  1372                                  vo1, vi1, vo2, vi2, vo3, vi3, vo4, vi4);

  1373                             emit(smapper, this, " @1 = @2, @3 = @4;",

  1374                                  vo5, vo1, vo6, vo2);

  1375                         }

  1376                     }

  1377                     break;

  1378                 }

  1379                 case opc_swap: {

  1380                     final Variable vi1 = smapper.get(0);

  1381                     final Variable vi2 = smapper.get(1);

  1383                     if (vi1.getType() == vi2.getType()) {

  1384                         final Variable tmp = smapper.pushT(vi1.getType());

  1386                         emit(smapper, this, "var @1 = @2, @2 = @3, @3 = @1;",

  1387                              tmp, vi1, vi2);

  1388                         smapper.pop(1);

  1389                     } else {

  1390                         smapper.pop(2);

  1391                         smapper.pushT(vi1.getType());

  1392                         smapper.pushT(vi2.getType());

  1393                     }

  1394                     break;

  1395                 }

  1396                 case opc_bipush:

  1397                     smapper.assign(this, VarType.INTEGER,

  1398                         "(" + Integer.toString(byteCodes[++i]) + ")");

  1399                     break;

  1400                 case opc_sipush:

  1401                     smapper.assign(this, VarType.INTEGER,

  1402                         "(" + Integer.toString(readShortArg(byteCodes, i)) + ")"

  1403                     );

  1404                     i += 2;

  1405                     break;

  1406                 case opc_getfield: {

  1407                     int indx = readUShortArg(byteCodes, i);

  1408                     String[] fi = jc.getFieldInfoName(indx);

  1409                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1410                     final String mangleClass = mangleClassName(fi[0]);

  1411                     final String mangleClassAccess = accessClassFalse(mangleClass);

  1412                     smapper.replace(this, type, "@2.call(@1)",

  1413                          smapper.getA(0),

  1414                          accessField(mangleClassAccess,

  1415                                      "_" + fi[1], fi)

  1416                     );

  1417                     i += 2;

  1418                     addReference(fi[0]);

  1419                     break;

  1420                 }

  1421                 case opc_putfield: {

  1422                     int indx = readUShortArg(byteCodes, i);

  1423                     String[] fi = jc.getFieldInfoName(indx);

  1424                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1425                     final String mangleClass = mangleClassName(fi[0]);

  1426                     final String mangleClassAccess = accessClassFalse(mangleClass);

  1427                     emit(smapper, this, "@3.call(@2, @1);",

  1428                          smapper.popT(type),

  1429                          smapper.popA(),

  1430                          accessField(mangleClassAccess,

  1431                                      "_" + fi[1], fi));

  1432                     i += 2;

  1433                     addReference(fi[0]);

  1434                     break;

  1435                 }

  1436                 case opc_getstatic: {

  1437                     int indx = readUShortArg(byteCodes, i);

  1438                     String[] fi = jc.getFieldInfoName(indx);

  1439                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1440                     String ac = accessClassFalse(mangleClassName(fi[0]));

  1441                     String af = accessField(ac, "_" + fi[1], fi);

  1442                     smapper.assign(this, type, af + "()");

  1443                     i += 2;

  1444                     addReference(fi[0]);

  1445                     break;

  1446                 }

  1447                 case opc_putstatic: {

  1448                     int indx = readUShortArg(byteCodes, i);

  1449                     String[] fi = jc.getFieldInfoName(indx);

  1450                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1451                     emit(smapper, this, "@1._@2(@3);",

  1452                          accessClassFalse(mangleClassName(fi[0])), fi[1],

  1453                          smapper.popT(type));

  1454                     i += 2;

  1455                     addReference(fi[0]);

  1456                     break;

  1457                 }

  1458                 case opc_checkcast: {

  1459                     int indx = readUShortArg(byteCodes, i);

  1460                     generateCheckcast(indx, smapper);

  1461                     i += 2;

  1462                     break;

  1463                 }

  1464                 case opc_instanceof: {

  1465                     int indx = readUShortArg(byteCodes, i);

  1466                     generateInstanceOf(indx, smapper);

  1467                     i += 2;

  1468                     break;

  1469                 }

  1470                 case opc_athrow: {

  1471                     final CharSequence v = smapper.popA();

  1472                     smapper.clear();

  1474                     emit(smapper, this, "{ var @1 = @2; throw @2; }",

  1475                          smapper.pushA(), v);

  1476                     break;

  1477                 }

  1479                 case opc_monitorenter: {

  1480                     debug("/* monitor enter */");

  1481                     smapper.popA();

  1482                     break;

  1483                 }

  1485                 case opc_monitorexit: {

  1486                     debug("/* monitor exit */");

  1487                     smapper.popA();

  1488                     break;

  1489                 }

  1491                 case opc_wide:

  1492                     wide = true;

  1493                     break;

  1495                 default: {

  1496                     wide = false;

  1497                     emit(smapper, this, "throw 'unknown bytecode @1';",

  1498                          Integer.toString(c));

  1499                 }

  1500             }

  1501             if (debug(" //")) {

  1502                 generateByteCodeComment(prev, i, byteCodes);

  1503             }

  1504             if (outChanged) {

  1505                 append("\n");

  1506             }

  1507         }

  1508         if (previousTrap != null) {

  1509             generateCatch(previousTrap, byteCodes.length, topMostLabel);

  1510         }

  1511         if (didBranches) {

  1512             append("\n    }\n");

  1513         }

  1514         while (openBraces-- > 0) {

  1515             append('}');

  1516         }

  1517         if (defineProp) {

  1518             append("\n}});");

  1519         } else {

  1520             append("\n};");

  1521         }

  1522         return defineProp;

  1523     }

  1525     private int generateIf(StackMapper mapper, byte[] byteCodes,

  1526         int i, final CharSequence v2, final CharSequence v1,

  1527         final String test, int topMostLabel

  1528     ) throws IOException {

  1529         mapper.flush(this);

  1530         int indx = i + readShortArg(byteCodes, i);

  1531         append("if ((").append(v1)

  1532            .append(") ").append(test).append(" (")

  1533            .append(v2).append(")) ");

  1534         goTo(this, i, indx, topMostLabel);

  1535         return i + 2;

  1536     }

  1538     private int readInt4(byte[] byteCodes, int offset) {

  1539         final int d = byteCodes[offset + 0] << 24;

  1540         final int c = byteCodes[offset + 1] << 16;

  1541         final int b = byteCodes[offset + 2] << 8;

  1542         final int a = byteCodes[offset + 3];

  1543         return (d & 0xff000000) | (c & 0xff0000) | (b & 0xff00) | (a & 0xff);

  1544     }

  1545     private static int readUByte(byte[] byteCodes, int offset) {

  1546         return byteCodes[offset] & 0xff;

  1547     }

  1549     private static int readUShort(byte[] byteCodes, int offset) {

  1550         return ((byteCodes[offset] & 0xff) << 8)

  1551                     | (byteCodes[offset + 1] & 0xff);

  1552     }

  1553     private static int readUShortArg(byte[] byteCodes, int offsetInstruction) {

  1554         return readUShort(byteCodes, offsetInstruction + 1);

  1555     }

  1557     private static int readShort(byte[] byteCodes, int offset) {

  1558         int signed = byteCodes[offset];

  1559         byte b0 = (byte)signed;

  1560         return (b0 << 8) | (byteCodes[offset + 1] & 0xff);

  1561     }

  1562     private static int readShortArg(byte[] byteCodes, int offsetInstruction) {

  1563         return readShort(byteCodes, offsetInstruction + 1);

  1564     }

  1566     private static void countArgs(String descriptor, char[] returnType, StringBuilder sig, StringBuilder cnt) {

  1567         int i = 0;

  1568         Boolean count = null;

  1569         boolean array = false;

  1570         sig.append("__");

  1571         int firstPos = sig.length();

  1572         while (i < descriptor.length()) {

  1573             char ch = descriptor.charAt(i++);

  1574             switch (ch) {

  1575                 case '(':

  1576                     count = true;

  1577                     continue;

  1578                 case ')':

  1579                     count = false;

  1580                     continue;

  1581                 case 'B':

  1582                 case 'C':

  1583                 case 'D':

  1584                 case 'F':

  1585                 case 'I':

  1586                 case 'J':

  1587                 case 'S':

  1588                 case 'Z':

  1589                     if (count) {

  1590                         if (array) {

  1591                             sig.append("_3");

  1592                         }

  1593                         sig.append(ch);

  1594                         if (ch == 'J' || ch == 'D') {

  1595                             cnt.append('1');

  1596                         } else {

  1597                             cnt.append('0');

  1598                         }

  1599                     } else {

  1600                         sig.insert(firstPos, ch);

  1601                         if (array) {

  1602                             returnType[0] = '[';

  1603                             sig.insert(firstPos, "_3");

  1604                         } else {

  1605                             returnType[0] = ch;

  1606                         }

  1607                     }

  1608                     array = false;

  1609                     continue;

  1610                 case 'V':

  1611                     assert !count;

  1612                     returnType[0] = 'V';

  1613                     sig.insert(firstPos, 'V');

  1614                     continue;

  1615                 case 'L':

  1616                     int next = descriptor.indexOf(';', i);

  1617                     String realSig = mangleSig(descriptor, i - 1, next + 1);

  1618                     if (count) {

  1619                         if (array) {

  1620                             sig.append("_3");

  1621                         }

  1622                         sig.append(realSig);

  1623                         cnt.append('0');

  1624                     } else {

  1625                         sig.insert(firstPos, realSig);

  1626                         if (array) {

  1627                             sig.insert(firstPos, "_3");

  1628                         }

  1629                         returnType[0] = 'L';

  1630                     }

  1631                     i = next + 1;

  1632                     array = false;

  1633                     continue;

  1634                 case '[':

  1635                     array = true;

  1636                     continue;

  1637                 default:

  1638                     throw new IllegalStateException("Invalid char: " + ch);

  1639             }

  1640         }

  1641     }

  1643     static String mangleSig(String sig) {

  1644         return mangleSig(sig, 0, sig.length());

  1645     }

  1647     private static String mangleMethodName(String name) {

  1648         StringBuilder sb = new StringBuilder(name.length() * 2);

  1649         int last = name.length();

  1650         for (int i = 0; i < last; i++) {

  1651             final char ch = name.charAt(i);

  1652             switch (ch) {

  1653                 case '_': sb.append("_1"); break;

  1654                 default: sb.append(ch); break;

  1655             }

  1656         }

  1657         return sb.toString();

  1658     }

  1659     private static String mangleSig(String txt, int first, int last) {

  1660         StringBuilder sb = new StringBuilder((last - first) * 2);

  1661         for (int i = first; i < last; i++) {

  1662             final char ch = txt.charAt(i);

  1663             switch (ch) {

  1664                 case '/': sb.append('_'); break;

  1665                 case '_': sb.append("_1"); break;

  1666                 case ';': sb.append("_2"); break;

  1667                 case '[': sb.append("_3"); break;

  1668                 default:

  1669                     if (Character.isJavaIdentifierPart(ch)) {

  1670                         sb.append(ch);

  1671                     } else {

  1672                         sb.append("_0");

  1673                         String hex = Integer.toHexString(ch).toLowerCase();

  1674                         for (int m = hex.length(); m < 4; m++) {

  1675                             sb.append("0");

  1676                         }

  1677                         sb.append(hex);

  1678                     }

  1679                 break;

  1680             }

  1681         }

  1682         return sb.toString();

  1683     }

  1685     private static String mangleClassName(String name) {

  1686         return mangleSig(name);

  1687     }

  1689     private static String findMethodName(MethodData m, StringBuilder cnt) {

  1690         StringBuilder name = new StringBuilder();

  1691         if ("<init>".equals(m.getName())) { // NOI18N

  1692             name.append("cons"); // NOI18N

  1693         } else if ("<clinit>".equals(m.getName())) { // NOI18N

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

  1695         } else {

  1696             name.append(mangleMethodName(m.getName()));

  1697         }

  1699         countArgs(m.getInternalSig(), new char[1], name, cnt);

  1700         return name.toString();

  1701     }

  1703     static String findMethodName(String[] mi, StringBuilder cnt, char[] returnType) {

  1704         StringBuilder name = new StringBuilder();

  1705         String descr = mi[2];//mi.getDescriptor();

  1706         String nm= mi[1];

  1707         if ("<init>".equals(nm)) { // NOI18N

  1708             name.append("cons"); // NOI18N

  1709         } else {

  1710             name.append(mangleMethodName(nm));

  1711         }

  1712         countArgs(descr, returnType, name, cnt);

  1713         return name.toString();

  1714     }

  1716     private int invokeStaticMethod(byte[] byteCodes, int i, final StackMapper mapper, boolean isStatic)

  1717     throws IOException {

  1718         int methodIndex = readUShortArg(byteCodes, i);

  1719         String[] mi = jc.getFieldInfoName(methodIndex);

  1720         char[] returnType = { 'V' };

  1721         StringBuilder cnt = new StringBuilder();

  1722         String mn = findMethodName(mi, cnt, returnType);

  1724         final int numArguments = isStatic ? cnt.length() : cnt.length() + 1;

  1725         final CharSequence[] vars = new CharSequence[numArguments];

  1727         for (int j = numArguments - 1; j >= 0; --j) {

  1728             vars[j] = mapper.popValue();

  1729         }

  1731         if ((

  1732             "newUpdater__Ljava_util_concurrent_atomic_AtomicIntegerFieldUpdater_2Ljava_lang_Class_2Ljava_lang_String_2".equals(mn)

  1733             && "java/util/concurrent/atomic/AtomicIntegerFieldUpdater".equals(mi[0])

  1734         ) || (

  1735             "newUpdater__Ljava_util_concurrent_atomic_AtomicLongFieldUpdater_2Ljava_lang_Class_2Ljava_lang_String_2".equals(mn)

  1736             && "java/util/concurrent/atomic/AtomicLongFieldUpdater".equals(mi[0])

  1737         )) {

  1738             if (vars[1] instanceof String) {

  1739                 String field = vars[1].toString();

  1740                 if (field.length() > 2 && field.charAt(0) == '"' && field.charAt(field.length() - 1) == '"') {

  1741                     vars[1] = "c._" + field.substring(1, field.length() - 1);

  1742                 }

  1743             }

  1744         }

  1745         if (

  1746             "newUpdater__Ljava_util_concurrent_atomic_AtomicReferenceFieldUpdater_2Ljava_lang_Class_2Ljava_lang_Class_2Ljava_lang_String_2".equals(mn)

  1747             && "java/util/concurrent/atomic/AtomicReferenceFieldUpdater".equals(mi[0])

  1748         ) {

  1749             if (vars[1] instanceof String) {

  1750                 String field = vars[2].toString();

  1751                 if (field.length() > 2 && field.charAt(0) == '"' && field.charAt(field.length() - 1) == '"') {

  1752                     vars[2] = "c._" + field.substring(1, field.length() - 1);

  1753                 }

  1754             }

  1755         }

  1757         if (returnType[0] != 'V') {

  1758             mapper.flush(this);

  1759             append("var ")

  1760                .append(mapper.pushT(VarType.fromFieldType(returnType[0])))

  1761                .append(" = ");

  1762         }

  1764         final String in = mi[0];

  1765         String mcn;

  1766         if (callbacks && (

  1767             in.equals("org/apidesign/html/boot/spi/Fn") ||

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

  1769         )) {

  1770             mcn = "java_lang_Class";

  1771         } else {

  1772             mcn = mangleClassName(in);

  1773         }

  1774         String object = accessClassFalse(mcn);

  1775         if (mn.startsWith("cons_")) {

  1776             object += ".constructor";

  1777         }

  1778         append(accessStaticMethod(object, mn, mi));

  1779         if (isStatic) {

  1780             append('(');

  1781         } else {

  1782             append(".call(");

  1783         }

  1784         if (numArguments > 0) {

  1785             append(vars[0]);

  1786             for (int j = 1; j < numArguments; ++j) {

  1787                 append(", ");

  1788                 append(vars[j]);

  1789             }

  1790         }

  1791         append(");");

  1792         i += 2;

  1793         addReference(in);

  1794         return i;

  1795     }

  1796     private int invokeVirtualMethod(byte[] byteCodes, int i, final StackMapper mapper)

  1797     throws IOException {

  1798         int methodIndex = readUShortArg(byteCodes, i);

  1799         String[] mi = jc.getFieldInfoName(methodIndex);

  1800         char[] returnType = { 'V' };

  1801         StringBuilder cnt = new StringBuilder();

  1802         String mn = findMethodName(mi, cnt, returnType);

  1804         final int numArguments = cnt.length() + 1;

  1805         final CharSequence[] vars =  new CharSequence[numArguments];

  1807         for (int j = numArguments - 1; j >= 0; --j) {

  1808             vars[j] = mapper.popValue();

  1809         }

  1811         if (returnType[0] != 'V') {

  1812             mapper.flush(this);

  1813             append("var ")

  1814                .append(mapper.pushT(VarType.fromFieldType(returnType[0])))

  1815                .append(" = ");

  1816         }

  1818         append(accessVirtualMethod(vars[0].toString(), mn, mi, numArguments));

  1819         String sep = "";

  1820         for (int j = 1; j < numArguments; ++j) {

  1821             append(sep);

  1822             append(vars[j]);

  1823             sep = ", ";

  1824         }

  1825         append(");");

  1826         i += 2;

  1827         return i;

  1828     }

  1830     private void addReference(String cn) throws IOException {

  1831         if (requireReference(cn)) {

  1832             debug(" /* needs " + cn + " */");

  1833         }

  1834     }

  1836     private void outType(String d, StringBuilder out) {

  1837         int arr = 0;

  1838         while (d.charAt(0) == '[') {

  1839             out.append('A');

  1840             d = d.substring(1);

  1841         }

  1842         if (d.charAt(0) == 'L') {

  1843             assert d.charAt(d.length() - 1) == ';';

  1844             out.append(d.replace('/', '_').substring(0, d.length() - 1));

  1845         } else {

  1846             out.append(d);

  1847         }

  1848     }

  1850     private String encodeConstant(int entryIndex) throws IOException {

  1851         String[] classRef = { null };

  1852         String s = jc.stringValue(entryIndex, classRef);

  1853         if (classRef[0] != null) {

  1854             if (classRef[0].startsWith("[")) {

  1855                 s = accessClass("java_lang_Class") + "(false)['forName__Ljava_lang_Class_2Ljava_lang_String_2']('" + classRef[0] + "')";

  1856             } else {

  1857                 addReference(classRef[0]);

  1858                 s = accessClassFalse(mangleClassName(s)) + ".constructor.$class";

  1859             }

  1860         }

  1861         return s;

  1862     }

  1864     private String javaScriptBody(String destObject, MethodData m, boolean isStatic) throws IOException {

  1865         byte[] arr = m.findAnnotationData(true);

  1866         if (arr == null) {

  1867             return null;

  1868         }

  1869         final String jvmType = "Lorg/apidesign/bck2brwsr/core/JavaScriptBody;";

  1870         final String htmlType = "Lnet/java/html/js/JavaScriptBody;";

  1871         class P extends AnnotationParser {

  1872             public P() {

  1873                 super(false, true);

  1874             }

  1876             int cnt;

  1877             String[] args = new String[30];

  1878             String body;

  1879             boolean javacall;

  1880             boolean html4j;

  1882             @Override

  1883             protected void visitAttr(String type, String attr, String at, String value) {

  1884                 if (type.equals(jvmType)) {

  1885                     if ("body".equals(attr)) {

  1886                         body = value;

  1887                     } else if ("args".equals(attr)) {

  1888                         args[cnt++] = value;

  1889                     } else {

  1890                         throw new IllegalArgumentException(attr);

  1891                     }

  1892                 }

  1893                 if (type.equals(htmlType)) {

  1894                     html4j = true;

  1895                     if ("body".equals(attr)) {

  1896                         body = value;

  1897                     } else if ("args".equals(attr)) {

  1898                         args[cnt++] = value;

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

  1900                         javacall = "1".equals(value);

  1901                     } else if ("wait4js".equals(attr)) {

  1902                         // ignore, we always invoke synchronously

  1903                     } else {

  1904                         throw new IllegalArgumentException(attr);

  1905                     }

  1906                 }

  1907             }

  1908         }

  1909         P p = new P();

  1910         p.parse(arr, jc);

  1911         if (p.body == null) {

  1912             return null;

  1913         }

  1914         StringBuilder cnt = new StringBuilder();

  1915         final String mn = findMethodName(m, cnt);

  1916         append("m = ").append(destObject).append(".").append(mn);

  1917         append(" = function(");

  1918         String space = "";

  1919         int index = 0;

  1920         StringBuilder toValue = new StringBuilder();

  1921         for (int i = 0; i < cnt.length(); i++) {

  1922             append(space);

  1923             space = outputArg(this, p.args, index);

  1924             if (p.html4j && space.length() > 0) {

  1925                 toValue.append("\n  ").append(p.args[index]).append(" = ")

  1926                     .append(accessClass("java_lang_Class")).append("(false).toJS(").

  1927                     append(p.args[index]).append(");");

  1928             }

  1929             index++;

  1930         }

  1931         append(") {").append("\n");

  1932         append(toValue.toString());

  1933         if (p.javacall) {

  1934             int lastSlash = jc.getClassName().lastIndexOf('/');

  1935             final String pkg = jc.getClassName().substring(0, lastSlash);

  1936             append(mangleCallbacks(pkg, p.body));

  1937             requireReference(pkg + "/$JsCallbacks$");

  1938         } else {

  1939             append(p.body);

  1940         }

  1941         append("\n}\n");

  1942         return mn;

  1943     }

  1945     private static CharSequence mangleCallbacks(String pkgName, String body) {

  1946         StringBuilder sb = new StringBuilder();

  1947         int pos = 0;

  1948         for (;;) {

  1949             int next = body.indexOf(".@", pos);

  1950             if (next == -1) {

  1951                 sb.append(body.substring(pos));

  1952                 body = sb.toString();

  1953                 break;

  1954             }

  1955             int ident = next;

  1956             while (ident > 0) {

  1957                 if (!Character.isJavaIdentifierPart(body.charAt(--ident))) {

  1958                     ident++;

  1959                     break;

  1960                 }

  1961             }

  1962             String refId = body.substring(ident, next);

  1964             sb.append(body.substring(pos, ident));

  1966             int sigBeg = body.indexOf('(', next);

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

  1968             int colon4 = body.indexOf("::", next);

  1969             if (sigBeg == -1 || sigEnd == -1 || colon4 == -1) {

  1970                 throw new IllegalStateException("Malformed body " + body);

  1971             }

  1972             String fqn = body.substring(next + 2, colon4);

  1973             String method = body.substring(colon4 + 2, sigBeg);

  1974             String params = body.substring(sigBeg, sigEnd + 1);

  1976             int paramBeg = body.indexOf('(', sigEnd + 1);

  1978             sb.append("vm.").append(pkgName.replace('/', '_')).append("_$JsCallbacks$(false)._VM().");

  1979             sb.append(mangleJsCallbacks(fqn, method, params, false));

  1980             sb.append("(").append(refId);

  1981             if (body.charAt(paramBeg + 1) != ')') {

  1982                 sb.append(",");

  1983             }

  1984             pos = paramBeg + 1;

  1985         }

  1986         sb = null;

  1987         pos = 0;

  1988         for (;;) {

  1989             int next = body.indexOf("@", pos);

  1990             if (next == -1) {

  1991                 if (sb == null) {

  1992                     return body;

  1993                 }

  1994                 sb.append(body.substring(pos));

  1995                 return sb;

  1996             }

  1997             if (sb == null) {

  1998                 sb = new StringBuilder();

  1999             }

  2001             sb.append(body.substring(pos, next));

  2003             int sigBeg = body.indexOf('(', next);

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

  2005             int colon4 = body.indexOf("::", next);

  2006             if (sigBeg == -1 || sigEnd == -1 || colon4 == -1) {

  2007                 throw new IllegalStateException("Malformed body " + body);

  2008             }

  2009             String fqn = body.substring(next + 1, colon4);

  2010             String method = body.substring(colon4 + 2, sigBeg);

  2011             String params = body.substring(sigBeg, sigEnd + 1);

  2013             int paramBeg = body.indexOf('(', sigEnd + 1);

  2015             sb.append("vm.").append(pkgName.replace('/', '_')).append("_$JsCallbacks$(false)._VM().");

  2016             sb.append(mangleJsCallbacks(fqn, method, params, true));

  2017             sb.append("(");

  2018             pos = paramBeg + 1;

  2019         }

  2020     }

  2022     static String mangleJsCallbacks(String fqn, String method, String params, boolean isStatic) {

  2023         if (params.startsWith("(")) {

  2024             params = params.substring(1);

  2025         }

  2026         if (params.endsWith(")")) {

  2027             params = params.substring(0, params.length() - 1);

  2028         }

  2029         StringBuilder sb = new StringBuilder();

  2030         final String fqnu = fqn.replace('.', '_');

  2031         final String rfqn = mangleClassName(fqnu);

  2032         final String rm = mangleMethodName(method);

  2033         final String srp;

  2034         {

  2035             StringBuilder pb = new StringBuilder();

  2036             int len = params.length();

  2037             int indx = 0;

  2038             while (indx < len) {

  2039                 char ch = params.charAt(indx);

  2040                 if (ch == '[' || ch == 'L') {

  2041                     int column = params.indexOf(';', indx) + 1;

  2042                     if (column > indx) {

  2043                         String real = params.substring(indx, column);

  2044                         if ("Ljava/lang/String;".equals(real)) {

  2045                             pb.append("Ljava/lang/String;");

  2046                             indx = column;

  2047                             continue;

  2048                         }

  2049                     }

  2050                     pb.append("Ljava/lang/Object;");

  2051                     indx = column;

  2052                 } else {

  2053                     pb.append(ch);

  2054                     indx++;

  2055                 }

  2056             }

  2057             srp = mangleSig(pb.toString());

  2058         }

  2059         final String rp = mangleSig(params);

  2060         final String mrp = mangleMethodName(rp);

  2061         sb.append(rfqn).append("$").append(rm).

  2062             append('$').append(mrp).append("__Ljava_lang_Object_2");

  2063         if (!isStatic) {

  2064             sb.append('L').append(fqnu).append("_2");

  2065         }

  2066         sb.append(srp);

  2067         return sb.toString();

  2068     }

  2070     private static String className(ClassData jc) {

  2071         //return jc.getName().getInternalName().replace('/', '_');

  2072         return mangleClassName(jc.getClassName());

  2073     }

  2075     private static String[] findAnnotation(

  2076         byte[] arr, ClassData cd, final String className,

  2077         final String... attrNames

  2078     ) throws IOException {

  2079         if (arr == null) {

  2080             return null;

  2081         }

  2082         final String[] values = new String[attrNames.length];

  2083         final boolean[] found = { false };

  2084         final String jvmType = "L" + className.replace('.', '/') + ";";

  2085         AnnotationParser ap = new AnnotationParser(false, true) {

  2086             @Override

  2087             protected void visitAttr(String type, String attr, String at, String value) {

  2088                 if (type.equals(jvmType)) {

  2089                     found[0] = true;

  2090                     for (int i = 0; i < attrNames.length; i++) {

  2091                         if (attrNames[i].equals(attr)) {

  2092                             values[i] = value;

  2093                         }

  2094                     }

  2095                 }

  2096             }

  2098         };

  2099         ap.parse(arr, cd);

  2100         return found[0] ? values : null;

  2101     }

  2103     private CharSequence initField(FieldData v) {

  2104         final String is = v.getInternalSig();

  2105         if (is.length() == 1) {

  2106             switch (is.charAt(0)) {

  2107                 case 'S':

  2108                 case 'J':

  2109                 case 'B':

  2110                 case 'Z':

  2111                 case 'C':

  2112                 case 'I': return " = 0;";

  2113                 case 'F':

  2114                 case 'D': return " = 0.0;";

  2115                 default:

  2116                     throw new IllegalStateException(is);

  2117             }

  2118         }

  2119         return " = null;";

  2120     }

  2122     private void generateAnno(ClassData cd, byte[] data) throws IOException {

  2123         AnnotationParser ap = new AnnotationParser(true, false) {

  2124             int[] cnt = new int[32];

  2125             int depth;

  2127             @Override

  2128             protected void visitAnnotationStart(String attrType, boolean top) throws IOException {

  2129                 final String slashType = attrType.substring(1, attrType.length() - 1);

  2130                 requireReference(slashType);

  2132                 if (cnt[depth]++ > 0) {

  2133                     append(",");

  2134                 }

  2135                 if (top) {

  2136                     append('"').append(attrType).append("\" : ");

  2137                 }

  2138                 append("{\n");

  2139                 cnt[++depth] = 0;

  2140             }

  2142             @Override

  2143             protected void visitAnnotationEnd(String type, boolean top) throws IOException {

  2144                 append("\n}\n");

  2145                 depth--;

  2146             }

  2148             @Override

  2149             protected void visitValueStart(String attrName, char type) throws IOException {

  2150                 if (cnt[depth]++ > 0) {

  2151                     append(",\n");

  2152                 }

  2153                 cnt[++depth] = 0;

  2154                 if (attrName != null) {

  2155                     append('"').append(attrName).append("\" : ");

  2156                 }

  2157                 if (type == '[') {

  2158                     append("[");

  2159                 }

  2160             }

  2162             @Override

  2163             protected void visitValueEnd(String attrName, char type) throws IOException {

  2164                 if (type == '[') {

  2165                     append("]");

  2166                 }

  2167                 depth--;

  2168             }

  2170             @Override

  2171             protected void visitAttr(String type, String attr, String attrType, String value)

  2172             throws IOException {

  2173                 if (attr == null && value == null) {

  2174                     return;

  2175                 }

  2176                 append(value);

  2177             }

  2179             @Override

  2180             protected void visitEnumAttr(String type, String attr, String attrType, String value)

  2181             throws IOException {

  2182                 final String slashType = attrType.substring(1, attrType.length() - 1);

  2183                 requireReference(slashType);

  2185                 final String cn = mangleClassName(slashType);

  2186                 append(accessClassFalse(cn))

  2187                    .append("['valueOf__L").

  2188                     append(cn).

  2189                     append("_2Ljava_lang_String_2']('").

  2190                     append(value).

  2191                     append("')");

  2192             }

  2193         };

  2194         ap.parse(data, cd);

  2195     }

  2197     private static String outputArg(Appendable out, String[] args, int indx) throws IOException {

  2198         final String name = args[indx];

  2199         if (name == null) {

  2200             return "";

  2201         }

  2202         if (name.contains(",")) {

  2203             throw new IOException("Wrong parameter with ',': " + name);

  2204         }

  2205         out.append(name);

  2206         return ",";

  2207     }

  2209     final void emitNoFlush(

  2210         StackMapper sm,

  2211         final String format, final CharSequence... params

  2212     ) throws IOException {

  2213         emitImpl(this, format, params);

  2214     }

  2215     static final void emit(

  2216         StackMapper sm,

  2217         final Appendable out,

  2218         final String format, final CharSequence... params

  2219     ) throws IOException {

  2220         sm.flush(out);

  2221         emitImpl(out, format, params);

  2222     }

  2223     static void emitImpl(final Appendable out,

  2224                              final String format,

  2225                              final CharSequence... params) throws IOException {

  2226         final int length = format.length();

  2228         int processed = 0;

  2229         int paramOffset = format.indexOf('@');

  2230         while ((paramOffset != -1) && (paramOffset < (length - 1))) {

  2231             final char paramChar = format.charAt(paramOffset + 1);

  2232             if ((paramChar >= '1') && (paramChar <= '9')) {

  2233                 final int paramIndex = paramChar - '0' - 1;

  2235                 out.append(format, processed, paramOffset);

  2236                 out.append(params[paramIndex]);

  2238                 ++paramOffset;

  2239                 processed = paramOffset + 1;

  2240             }

  2242             paramOffset = format.indexOf('@', paramOffset + 1);

  2243         }

  2245         out.append(format, processed, length);

  2246     }

  2248     private void generateCatch(TrapData[] traps, int current, int topMostLabel) throws IOException {

  2249         append("} catch (e) {\n");

  2250         int finallyPC = -1;

  2251         for (TrapData e : traps) {

  2252             if (e == null) {

  2253                 break;

  2254             }

  2255             if (e.catch_cpx != 0) { //not finally

  2256                 final String classInternalName = jc.getClassName(e.catch_cpx);

  2257                 addReference(classInternalName);

  2258                 append("e = vm.java_lang_Class(false).bck2BrwsrThrwrbl(e);");

  2259                 append("if (e['$instOf_" + classInternalName.replace('/', '_') + "']) {");

  2260                 append("var stA0 = e;");

  2261                 goTo(this, current, e.handler_pc, topMostLabel);

  2262                 append("}\n");

  2263             } else {

  2264                 finallyPC = e.handler_pc;

  2265             }

  2266         }

  2267         if (finallyPC == -1) {

  2268             append("throw e;");

  2269         } else {

  2270             append("var stA0 = e;");

  2271             goTo(this, current, finallyPC, topMostLabel);

  2272         }

  2273         append("\n}");

  2274     }

  2276     private static void goTo(Appendable out, int current, int to, int canBack) throws IOException {

  2277         if (to < current) {

  2278             if (canBack < to) {

  2279                 out.append("{ gt = 0; continue X_" + to + "; }");

  2280             } else {

  2281                 out.append("{ gt = " + to + "; continue X_0; }");

  2282             }

  2283         } else {

  2284             out.append("{ gt = " + to + "; break IF; }");

  2285         }

  2286     }

  2288     private static void emitIf(

  2289         StackMapper sm,

  2290         Appendable out, String pattern,

  2291         CharSequence param,

  2292         int current, int to, int canBack

  2293     ) throws IOException {

  2294         sm.flush(out);

  2295         emitImpl(out, pattern, param);

  2296         goTo(out, current, to, canBack);

  2297     }

  2299     private void generateNewArray(int atype, final StackMapper smapper) throws IOException, IllegalStateException {

  2300         String jvmType;

  2301         switch (atype) {

  2302             case 4: jvmType = "[Z"; break;

  2303             case 5: jvmType = "[C"; break;

  2304             case 6: jvmType = "[F"; break;

  2305             case 7: jvmType = "[D"; break;

  2306             case 8: jvmType = "[B"; break;

  2307             case 9: jvmType = "[S"; break;

  2308             case 10: jvmType = "[I"; break;

  2309             case 11: jvmType = "[J"; break;

  2310             default: throw new IllegalStateException("Array type: " + atype);

  2311         }

  2312         emit(smapper, this,

  2313             "var @2 = Array.prototype['newArray__Ljava_lang_Object_2ZLjava_lang_String_2Ljava_lang_Object_2I'](true, '@3', null, @1);",

  2314              smapper.popI(), smapper.pushA(), jvmType);

  2315     }

  2317     private void generateANewArray(int type, final StackMapper smapper) throws IOException {

  2318         String typeName = jc.getClassName(type);

  2319         String ref = "null";

  2320         if (typeName.startsWith("[")) {

  2321             typeName = "'[" + typeName + "'";

  2322         } else {

  2323             ref = "vm." + mangleClassName(typeName);

  2324             typeName = "'[L" + typeName + ";'";

  2325         }

  2326         emit(smapper, this,

  2327             "var @2 = Array.prototype['newArray__Ljava_lang_Object_2ZLjava_lang_String_2Ljava_lang_Object_2I'](false, @3, @4, @1);",

  2328              smapper.popI(), smapper.pushA(), typeName, ref);

  2329     }

  2331     private int generateMultiANewArray(int type, final byte[] byteCodes, int i, final StackMapper smapper) throws IOException {

  2332         String typeName = jc.getClassName(type);

  2333         int dim = readUByte(byteCodes, ++i);

  2334         StringBuilder dims = new StringBuilder();

  2335         dims.append('[');

  2336         for (int d = 0; d < dim; d++) {

  2337             if (d != 0) {

  2338                 dims.insert(1, ",");

  2339             }

  2340             dims.insert(1, smapper.popI());

  2341         }

  2342         dims.append(']');

  2343         String fn = "null";

  2344         if (typeName.charAt(dim) == 'L') {

  2345             fn = "vm." + mangleClassName(typeName.substring(dim + 1, typeName.length() - 1));

  2346         }

  2347         emit(smapper, this,

  2348             "var @2 = Array.prototype['multiNewArray__Ljava_lang_Object_2Ljava_lang_String_2_3ILjava_lang_Object_2']('@3', @1, @4);",

  2349              dims.toString(), smapper.pushA(), typeName, fn

  2350         );

  2351         return i;

  2352     }

  2354     private int generateTableSwitch(int i, final byte[] byteCodes, final StackMapper smapper, int topMostLabel) throws IOException {

  2355         int table = i / 4 * 4 + 4;

  2356         int dflt = i + readInt4(byteCodes, table);

  2357         table += 4;

  2358         int low = readInt4(byteCodes, table);

  2359         table += 4;

  2360         int high = readInt4(byteCodes, table);

  2361         table += 4;

  2362         final CharSequence swVar = smapper.popValue();

  2363         smapper.flush(this);

  2364         append("switch (").append(swVar).append(") {\n");

  2365         while (low <= high) {

  2366             int offset = i + readInt4(byteCodes, table);

  2367             table += 4;

  2368             append("  case " + low).append(":"); goTo(this, i, offset, topMostLabel); append('\n');

  2369             low++;

  2370         }

  2371         append("  default: ");

  2372         goTo(this, i, dflt, topMostLabel);

  2373         append("\n}");

  2374         i = table - 1;

  2375         return i;

  2376     }

  2378     private int generateLookupSwitch(int i, final byte[] byteCodes, final StackMapper smapper, int topMostLabel) throws IOException {

  2379         int table = i / 4 * 4 + 4;

  2380         int dflt = i + readInt4(byteCodes, table);

  2381         table += 4;

  2382         int n = readInt4(byteCodes, table);

  2383         table += 4;

  2384         final CharSequence swVar = smapper.popValue();

  2385         smapper.flush(this);

  2386         append("switch (").append(swVar).append(") {\n");

  2387         while (n-- > 0) {

  2388             int cnstnt = readInt4(byteCodes, table);

  2389             table += 4;

  2390             int offset = i + readInt4(byteCodes, table);

  2391             table += 4;

  2392             append("  case " + cnstnt).append(": "); goTo(this, i, offset, topMostLabel); append('\n');

  2393         }

  2394         append("  default: ");

  2395         goTo(this, i, dflt, topMostLabel);

  2396         append("\n}");

  2397         i = table - 1;

  2398         return i;

  2399     }

  2401     private void generateInstanceOf(int indx, final StackMapper smapper) throws IOException {

  2402         String type = jc.getClassName(indx);

  2403         if (!type.startsWith("[")) {

  2404             emit(smapper, this,

  2405                     "var @2 = @1 != null && @1['$instOf_@3'] ? 1 : 0;",

  2406                  smapper.popA(), smapper.pushI(),

  2407                  type.replace('/', '_'));

  2408         } else {

  2409             int cnt = 0;

  2410             while (type.charAt(cnt) == '[') {

  2411                 cnt++;

  2412             }

  2413             if (type.charAt(cnt) == 'L') {

  2414                 type = "vm." + mangleClassName(type.substring(cnt + 1, type.length() - 1));

  2415                 emit(smapper, this,

  2416                     "var @2 = Array.prototype['isInstance__ZLjava_lang_Object_2ILjava_lang_Object_2'](@1, @4, @3);",

  2417                     smapper.popA(), smapper.pushI(),

  2418                     type, "" + cnt

  2419                 );

  2420             } else {

  2421                 emit(smapper, this,

  2422                     "var @2 = Array.prototype['isInstance__ZLjava_lang_Object_2Ljava_lang_String_2'](@1, '@3');",

  2423                     smapper.popA(), smapper.pushI(), type

  2424                 );

  2425             }

  2426         }

  2427     }

  2429     private void generateCheckcast(int indx, final StackMapper smapper) throws IOException {

  2430         String type = jc.getClassName(indx);

  2431         if (!type.startsWith("[")) {

  2432             emitNoFlush(smapper,

  2433                  "if (@1 !== null && !@1['$instOf_@2']) vm.java_lang_Class(false).castEx();",

  2434                  smapper.getT(0, VarType.REFERENCE, false), type.replace('/', '_'));

  2435         } else {

  2436             int cnt = 0;

  2437             while (type.charAt(cnt) == '[') {

  2438                 cnt++;

  2439             }

  2440             if (type.charAt(cnt) == 'L') {

  2441                 type = "vm." + mangleClassName(type.substring(cnt + 1, type.length() - 1));

  2442                 emitNoFlush(smapper,

  2443                     "if (@1 !== null && !Array.prototype['isInstance__ZLjava_lang_Object_2ILjava_lang_Object_2'](@1, @3, @2)) vm.java_lang_Class(false).castEx();",

  2444                      smapper.getT(0, VarType.REFERENCE, false), type, "" + cnt

  2445                 );

  2446             } else {

  2447                 emitNoFlush(smapper,

  2448                     "if (@1 !== null && !Array.prototype['isInstance__ZLjava_lang_Object_2Ljava_lang_String_2'](@1, '@2')) vm.java_lang_Class(false).castEx();",

  2449                      smapper.getT(0, VarType.REFERENCE, false), type

  2450                 );

  2451             }

  2452         }

  2453     }

  2455     private void generateByteCodeComment(int prev, int i, final byte[] byteCodes) throws IOException {

  2456         for (int j = prev; j <= i; j++) {

  2457             append(" ");

  2458             final int cc = readUByte(byteCodes, j);

  2459             append(Integer.toString(cc));

  2460         }

  2461     }

  2463     @JavaScriptBody(args = "msg", body = "")

  2464     private static void println(String msg) {

  2465         System.err.println(msg);

  2466     }

  2467 }

author	Jaroslav Tulach <jaroslav.tulach@apidesign.org>
	Wed, 11 Mar 2015 16:04:59 +0100
changeset 1810	260d731c9504
parent 1801	a29572878b0e
child 1811	ff2a253900ed
permissions	-rw-r--r--