hg/bck2brwsr: rt/vm/src/main/java/org/apidesign/vm4brwsr/ByteCodeToJavaScript.java@9cdc403018b5

     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.*;

    24 import org.apidesign.vm4brwsr.ByteCodeParser.AnnotationParser;

    25 import org.apidesign.vm4brwsr.ByteCodeParser.BootMethodData;

    26 import org.apidesign.vm4brwsr.ByteCodeParser.CPX2;

    27 import org.apidesign.vm4brwsr.ByteCodeParser.ClassData;

    28 import org.apidesign.vm4brwsr.ByteCodeParser.FieldData;

    29 import org.apidesign.vm4brwsr.ByteCodeParser.MethodData;

    30 import org.apidesign.vm4brwsr.ByteCodeParser.StackMapIterator;

    31 import org.apidesign.vm4brwsr.ByteCodeParser.TrapData;

    32 import org.apidesign.vm4brwsr.ByteCodeParser.TrapDataIterator;

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

    35  *

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

    37  */

    38 abstract class ByteCodeToJavaScript implements Appendable {

    39     private ClassData jc;

    40     private final Appendable out;

    41     private final StringArray classRefs = new StringArray();

    42     private boolean outChanged;

    43     private boolean callbacks;

    45     protected ByteCodeToJavaScript(Appendable out) {

    46         this.out = out;

    47     }

    49     @Override

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

    51         out.append(csq);

    52         outChanged = true;

    53         return this;

    54     }

    56     @Override

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

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

    59         outChanged = true;

    60         return this;

    61     }

    63     @Override

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

    65         out.append(c);

    66         outChanged = true;

    67         return this;

    68     }

    70     /* Collects additional required resources.

    71      *

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

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

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

    75      */

    76     protected abstract boolean requireReference(String internalClassName);

    78     /*

    79      * @param resourcePath name of resources to read

    80      */

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

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

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

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

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

    88      *

    89      * @param className suggested name of the class

    90      */

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

    92         return className + " = ";

    93     }

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

    95         return classOperation;

    96     }

    98     final String accessClassFalse(String classOperation) {

    99         if (mangleClassName(jc.getClassName()).equals(classOperation)) {

   100             return "c";

   101         }

   102         classRefs.addIfMissing(classOperation);

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

   104     }

   106     protected FieldData findField(String[] fieldInfoName) throws IOException {

   107         return null;

   108     }

   110     protected String accessField(String object, FieldData data, String[] fieldInfoName)

   111     throws IOException {

   112         String mangledName = "_" + fieldInfoName[1];

   113         return object + "." + mangledName;

   114     }

   116     protected String accessStaticMethod(

   117                              String object,

   118                              String mangledName,

   119                              String[] fieldInfoName) throws IOException {

   120         return object + "." + mangledName;

   121     }

   123     protected String accessVirtualMethod(

   124             String object,

   125             String mangledName,

   126             String[] fieldInfoName,

   127             int params

   128     ) throws IOException {

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

   130     }

   132     protected void declaredClass(ClassData classData, String mangledName)

   133             throws IOException {

   134     }

   136     protected void declaredField(FieldData fieldData,

   137                                  String destObject,

   138                                  String mangledName) throws IOException {

   139     }

   141     protected void declaredMethod(MethodData methodData,

   142                                   String destObject,

   143                                   String mangledName) throws IOException {

   144     }

   146     /** Prints out a debug message.

   147      *

   148      * @param msg the message

   149      * @return true if the message has been printed

   150      * @throws IOException

   151      */

   152     boolean debug(String msg) throws IOException {

   153         append(msg);

   154         return true;

   155     }

   157     /**

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

   159      *

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

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

   162      *

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

   164      */

   166     public String compile(InputStream classFile) throws IOException {

   167         return compile(new ClassData(classFile));

   168     }

   170     protected String compile(ClassData classData) throws IOException {

   171         this.jc = classData;

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

   173         try {

   174             return compileImpl(cn);

   175         } catch (IOException ex) {

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

   177         }

   178     }

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

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

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

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

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

   185             );

   186         }

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

   188         {

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

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

   191                 "resource", "processByteCode"

   192             );

   193             if (arr != null) {

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

   195                     requireScript(arr[0]);

   196                 }

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

   198                     return null;

   199                 }

   200             }

   201         }

   202         final String jsResource;

   203         {

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

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

   206                 "value"

   207             );

   208             if (arr != null) {

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

   210                     jsResource = arr[0];

   211                 } else {

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

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

   214                 }

   215             } else {

   216                 jsResource = null;

   217             }

   218         }

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

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

   221             "container", "prototype"

   222         );

   223         StringArray toInitilize = new StringArray();

   224         final String className = className(jc);

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

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

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

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

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

   230         if (proto == null) {

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

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

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

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

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

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

   237         } else {

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

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

   240                 proto[0] = "p";

   241             }

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

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

   244         }

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

   246             if (v.isStatic()) {

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

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

   249                         continue;

   250                     }

   251                 }

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

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

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

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

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

   257             } else {

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

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

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

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

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

   263                     .append("; };");

   264             }

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

   267         }

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

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

   270             if (javaScriptOnly(onlyArr)) continue;

   271             String destObject;

   272             String mn;

   273             append("\n    ");

   274             if (m.isStatic()) {

   275                 destObject = "c";

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

   277             } else {

   278                 if (m.isConstructor()) {

   279                     destObject = "CLS";

   280                     mn = generateInstanceMethod(destObject, m);

   281                 } else {

   282                     destObject = "c";

   283                     mn = generateInstanceMethod(destObject, m);

   284                 }

   285             }

   286             declaredMethod(m, destObject, mn);

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

   288             if (runAnno != null) {

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

   290                 generateAnno(jc, runAnno);

   291                 append("\n    };");

   292             }

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

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

   295         }

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

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

   298         String instOfName = "$instOf_" + className;

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

   300         if (jc.isInterface()) {

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

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

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

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

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

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

   307                 }

   308             }

   309         }

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

   311             String intrfc = mangleClassName(superInterface);

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

   313             requireReference(superInterface);

   314         }

   315         append("\n    }");

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

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

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

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

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

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

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

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

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

   325         {

   326             boolean first = true;

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

   328                 if (!first) {

   329                     append(",");

   330                 }

   331                 requireReference(intrfc);

   332                 String mangledIface = mangleClassName(intrfc);

   333                 append("\n        ");

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

   335                 first = false;

   336             }

   337         }

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

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

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

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

   342         if (classAnno != null) {

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

   344             generateAnno(jc, classAnno);

   345             append("\n    };");

   346         }

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

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

   349         }

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

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

   352         }

   353         classRefs.clear();

   355         if (jsResource != null) {

   356             requireResource(jsResource);

   357         }

   359         append("\n  }");

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

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

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

   363         append("\n    }");

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

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

   366             if (javaScriptOnly(onlyArr)) continue;

   367             if (!v.isStatic()) {

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

   369                     append(className).append('_').

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

   371             }

   372         }

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

   374         append("\n  }");

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

   376         append("\n};");

   378         declaredClass(jc, className);

   380 //        StringBuilder sb = new StringBuilder();

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

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

   383 //        }

   384         return "";

   385     }

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

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

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

   390             "name", "value"

   391         );

   392         if (only != null) {

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

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

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

   396             }

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

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

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

   400             }

   401             return true;

   402         }

   403         return false;

   404     }

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

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

   407         if (jsb != null) {

   408             return jsb;

   409         }

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

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

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

   413             if (defineProp) {

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

   415             } else {

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

   417             }

   418         }

   419         return mn;

   420     }

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

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

   424         if (jsb != null) {

   425             return jsb;

   426         }

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

   428         generateMethod(destObject, mn, m);

   429         return mn;

   430     }

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

   433             throws IOException {

   434         final StackMapIterator stackMapIterator = m.createStackMapIterator();

   435         TrapDataIterator trap = m.getTrapDataIterator();

   436         final LocalsMapper lmapper =

   437                 new LocalsMapper(stackMapIterator.getArguments());

   439         boolean defineProp =

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

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

   443         if (defineProp) {

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

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

   446         } else {

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

   448         }

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

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

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

   453         if (byteCodes == null) {

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

   455                this

   456                .append(jc.getClassName()).append('.')

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

   458             }

   459             if (defineProp) {

   460                 append("}});");

   461             } else {

   462                 append("};");

   463             }

   464             return defineProp;

   465         }

   467         final StackMapper smapper = new StackMapper();

   469         if (!m.isStatic()) {

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

   471         }

   473         int lastStackFrame;

   474         TrapData[] previousTrap = null;

   475         boolean wide = false;

   476         boolean didBranches;

   477         if (stackMapIterator.isEmpty()) {

   478             didBranches = false;

   479             lastStackFrame = 0;

   480         } else {

   481             didBranches = true;

   482             lastStackFrame = -1;

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

   484         }

   486         int openBraces = 0;

   487         int topMostLabel = 0;

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

   489             int prev = i;

   490             outChanged = false;

   491             stackMapIterator.advanceTo(i);

   492             boolean changeInCatch = trap.advanceTo(i);

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

   494                 if (previousTrap != null) {

   495                     generateCatch(previousTrap, i, topMostLabel);

   496                     previousTrap = null;

   497                 }

   498             }

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

   500                 smapper.flush(this);

   501                 if (i != 0) {

   502                     append("    }\n");

   503                 }

   504                 if (openBraces > 64) {

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

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

   507                     }

   508                     openBraces = 1;

   509                     topMostLabel = i;

   510                 }

   512                 lastStackFrame = stackMapIterator.getFrameIndex();

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

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

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

   516                 openBraces++;

   517                 changeInCatch = true;

   518             } else {

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

   520             }

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

   522                 append("try {");

   523                 previousTrap = trap.current();

   524             }

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

   526             switch (c) {

   527                 case opc_aload_0:

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

   529                     break;

   530                 case opc_iload_0:

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

   532                     break;

   533                 case opc_lload_0:

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

   535                     break;

   536                 case opc_fload_0:

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

   538                     break;

   539                 case opc_dload_0:

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

   541                     break;

   542                 case opc_aload_1:

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

   544                     break;

   545                 case opc_iload_1:

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

   547                     break;

   548                 case opc_lload_1:

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

   550                     break;

   551                 case opc_fload_1:

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

   553                     break;

   554                 case opc_dload_1:

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

   556                     break;

   557                 case opc_aload_2:

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

   559                     break;

   560                 case opc_iload_2:

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

   562                     break;

   563                 case opc_lload_2:

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

   565                     break;

   566                 case opc_fload_2:

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

   568                     break;

   569                 case opc_dload_2:

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

   571                     break;

   572                 case opc_aload_3:

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

   574                     break;

   575                 case opc_iload_3:

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

   577                     break;

   578                 case opc_lload_3:

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

   580                     break;

   581                 case opc_fload_3:

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

   583                     break;

   584                 case opc_dload_3:

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

   586                     break;

   587                 case opc_iload: {

   588                     ++i;

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

   590                                           : readUByte(byteCodes, i);

   591                     wide = false;

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

   593                     break;

   594                 }

   595                 case opc_lload: {

   596                     ++i;

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

   598                                           : readUByte(byteCodes, i);

   599                     wide = false;

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

   601                     break;

   602                 }

   603                 case opc_fload: {

   604                     ++i;

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

   606                                           : readUByte(byteCodes, i);

   607                     wide = false;

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

   609                     break;

   610                 }

   611                 case opc_dload: {

   612                     ++i;

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

   614                                           : readUByte(byteCodes, i);

   615                     wide = false;

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

   617                     break;

   618                 }

   619                 case opc_aload: {

   620                     ++i;

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

   622                                           : readUByte(byteCodes, i);

   623                     wide = false;

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

   625                     break;

   626                 }

   627                 case opc_istore: {

   628                     ++i;

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

   630                                           : readUByte(byteCodes, i);

   631                     wide = false;

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

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

   634                     break;

   635                 }

   636                 case opc_lstore: {

   637                     ++i;

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

   639                                           : readUByte(byteCodes, i);

   640                     wide = false;

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

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

   643                     break;

   644                 }

   645                 case opc_fstore: {

   646                     ++i;

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

   648                                           : readUByte(byteCodes, i);

   649                     wide = false;

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

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

   652                     break;

   653                 }

   654                 case opc_dstore: {

   655                     ++i;

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

   657                                           : readUByte(byteCodes, i);

   658                     wide = false;

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

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

   661                     break;

   662                 }

   663                 case opc_astore: {

   664                     ++i;

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

   666                                           : readUByte(byteCodes, i);

   667                     wide = false;

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

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

   670                     break;

   671                 }

   672                 case opc_astore_0:

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

   674                     break;

   675                 case opc_istore_0:

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

   677                     break;

   678                 case opc_lstore_0:

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

   680                     break;

   681                 case opc_fstore_0:

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

   683                     break;

   684                 case opc_dstore_0:

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

   686                     break;

   687                 case opc_astore_1:

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

   689                     break;

   690                 case opc_istore_1:

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

   692                     break;

   693                 case opc_lstore_1:

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

   695                     break;

   696                 case opc_fstore_1:

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

   698                     break;

   699                 case opc_dstore_1:

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

   701                     break;

   702                 case opc_astore_2:

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

   704                     break;

   705                 case opc_istore_2:

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

   707                     break;

   708                 case opc_lstore_2:

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

   710                     break;

   711                 case opc_fstore_2:

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

   713                     break;

   714                 case opc_dstore_2:

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

   716                     break;

   717                 case opc_astore_3:

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

   719                     break;

   720                 case opc_istore_3:

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

   722                     break;

   723                 case opc_lstore_3:

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

   725                     break;

   726                 case opc_fstore_3:

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

   728                     break;

   729                 case opc_dstore_3:

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

   731                     break;

   732                 case opc_iadd:

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

   734                     break;

   735                 case opc_ladd:

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

   737                     break;

   738                 case opc_fadd:

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

   740                     break;

   741                 case opc_dadd:

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

   743                     break;

   744                 case opc_isub:

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

   746                     break;

   747                 case opc_lsub:

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

   749                     break;

   750                 case opc_fsub:

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

   752                     break;

   753                 case opc_dsub:

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

   755                     break;

   756                 case opc_imul:

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

   758                     break;

   759                 case opc_lmul:

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

   761                     break;

   762                 case opc_fmul:

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

   764                     break;

   765                 case opc_dmul:

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

   767                     break;

   768                 case opc_idiv:

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

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

   771                     break;

   772                 case opc_ldiv:

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

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

   775                     break;

   776                 case opc_fdiv:

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

   778                     break;

   779                 case opc_ddiv:

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

   781                     break;

   782                 case opc_irem:

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

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

   785                     break;

   786                 case opc_lrem:

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

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

   789                     break;

   790                 case opc_frem:

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

   792                     break;

   793                 case opc_drem:

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

   795                     break;

   796                 case opc_iand:

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

   798                     break;

   799                 case opc_land:

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

   801                     break;

   802                 case opc_ior:

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

   804                     break;

   805                 case opc_lor:

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

   807                     break;

   808                 case opc_ixor:

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

   810                     break;

   811                 case opc_lxor:

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

   813                     break;

   814                 case opc_ineg:

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

   816                     break;

   817                 case opc_lneg:

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

   819                     break;

   820                 case opc_fneg:

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

   822                     break;

   823                 case opc_dneg:

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

   825                     break;

   826                 case opc_ishl:

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

   828                     break;

   829                 case opc_lshl:

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

   831                     break;

   832                 case opc_ishr:

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

   834                     break;

   835                 case opc_lshr:

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

   837                     break;

   838                 case opc_iushr:

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

   840                     break;

   841                 case opc_lushr:

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

   843                     break;

   844                 case opc_iinc: {

   845                     ++i;

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

   847                                              : readUByte(byteCodes, i);

   848                     ++i;

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

   850                                             : byteCodes[i];

   851                     wide = false;

   852                     if (incrBy == 1) {

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

   854                     } else {

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

   856                              lmapper.getI(varIndx),

   857                              Integer.toString(incrBy));

   858                     }

   859                     break;

   860                 }

   861                 case opc_return:

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

   863                     break;

   864                 case opc_ireturn:

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

   866                     break;

   867                 case opc_lreturn:

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

   869                     break;

   870                 case opc_freturn:

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

   872                     break;

   873                 case opc_dreturn:

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

   875                     break;

   876                 case opc_areturn:

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

   878                     break;

   879                 case opc_i2l:

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

   881                     break;

   882                 case opc_i2f:

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

   884                     break;

   885                 case opc_i2d:

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

   887                     break;

   888                 case opc_l2i:

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

   890                     break;

   891                     // max int check?

   892                 case opc_l2f:

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

   894                     break;

   895                 case opc_l2d:

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

   897                     break;

   898                 case opc_f2d:

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

   900                          smapper.getF(0));

   901                     break;

   902                 case opc_d2f:

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

   904                          smapper.getD(0));

   905                     break;

   906                 case opc_f2i:

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

   908                          smapper.getF(0));

   909                     break;

   910                 case opc_f2l:

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

   912                          smapper.getF(0));

   913                     break;

   914                 case opc_d2i:

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

   916                          smapper.getD(0));

   917                     break;

   918                 case opc_d2l:

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

   920                     break;

   921                 case opc_i2b:

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

   923                     break;

   924                 case opc_i2c:

   925                 case opc_i2s:

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

   927                     break;

   928                 case opc_aconst_null:

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

   930                     break;

   931                 case opc_iconst_m1:

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

   933                     break;

   934                 case opc_iconst_0:

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

   936                     break;

   937                 case opc_dconst_0:

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

   939                     break;

   940                 case opc_lconst_0:

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

   942                     break;

   943                 case opc_fconst_0:

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

   945                     break;

   946                 case opc_iconst_1:

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

   948                     break;

   949                 case opc_lconst_1:

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

   951                     break;

   952                 case opc_fconst_1:

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

   954                     break;

   955                 case opc_dconst_1:

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

   957                     break;

   958                 case opc_iconst_2:

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

   960                     break;

   961                 case opc_fconst_2:

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

   963                     break;

   964                 case opc_iconst_3:

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

   966                     break;

   967                 case opc_iconst_4:

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

   969                     break;

   970                 case opc_iconst_5:

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

   972                     break;

   973                 case opc_ldc: {

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

   975                     String v = encodeConstant(indx);

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

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

   978                     break;

   979                 }

   980                 case opc_ldc_w:

   981                 case opc_ldc2_w: {

   982                     int indx = readUShortArg(byteCodes, i);

   983                     i += 2;

   984                     String v = encodeConstant(indx);

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

   986                     if (type == VarType.LONG) {

   987                         final Long lv = new Long(v);

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

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

   990                         if (hi == 0) {

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

   992                         } else {

   993                             smapper.assign(this, VarType.LONG,

   994                                 "0x" + Integer.toHexString(hi) + ".next32(0x" +

   995                                     Integer.toHexString(low) + ")"

   996                             );

   997                         }

   998                     } else {

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

  1000                     }

  1001                     break;

  1002                 }

  1003                 case opc_lcmp:

  1004                     smapper.replace(this, VarType.INTEGER, "(@2).compare64(@1)", smapper.popL(), smapper.getL(0));

  1005                     break;

  1006                 case opc_fcmpl:

  1007                 case opc_fcmpg:

  1008                     emit(smapper, this, "var @3 = (@2 == @1) ? 0 : ((@2 < @1) ? -1 : 1);",

  1009                          smapper.popF(), smapper.popF(), smapper.pushI());

  1010                     break;

  1011                 case opc_dcmpl:

  1012                 case opc_dcmpg:

  1013                     emit(smapper, this, "var @3 = (@2 == @1) ? 0 : ((@2 < @1) ? -1 : 1);",

  1014                          smapper.popD(), smapper.popD(), smapper.pushI());

  1015                     break;

  1016                 case opc_if_acmpeq:

  1017                     i = generateIf(smapper, byteCodes, i, smapper.popA(), smapper.popA(),

  1018                                    "===", topMostLabel);

  1019                     break;

  1020                 case opc_if_acmpne:

  1021                     i = generateIf(smapper, byteCodes, i, smapper.popA(), smapper.popA(),

  1022                                    "!==", topMostLabel);

  1023                     break;

  1024                 case opc_if_icmpeq:

  1025                     i = generateIf(smapper, byteCodes, i, smapper.popI(), smapper.popI(),

  1026                                    "==", topMostLabel);

  1027                     break;

  1028                 case opc_ifeq: {

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

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

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

  1032                     i += 2;

  1033                     break;

  1034                 }

  1035                 case opc_ifne: {

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

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

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

  1039                     i += 2;

  1040                     break;

  1041                 }

  1042                 case opc_iflt: {

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

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

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

  1046                     i += 2;

  1047                     break;

  1048                 }

  1049                 case opc_ifle: {

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

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

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

  1053                     i += 2;

  1054                     break;

  1055                 }

  1056                 case opc_ifgt: {

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

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

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

  1060                     i += 2;

  1061                     break;

  1062                 }

  1063                 case opc_ifge: {

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

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

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

  1067                     i += 2;

  1068                     break;

  1069                 }

  1070                 case opc_ifnonnull: {

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

  1072                     emitIf(smapper, this, "if ((@1) !== null) ",

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

  1074                     i += 2;

  1075                     break;

  1076                 }

  1077                 case opc_ifnull: {

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

  1079                     emitIf(smapper, this, "if ((@1) === null) ",

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

  1081                     i += 2;

  1082                     break;

  1083                 }

  1084                 case opc_if_icmpne:

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

  1086                                    "!=", topMostLabel);

  1087                     break;

  1088                 case opc_if_icmplt:

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

  1090                                    "<", topMostLabel);

  1091                     break;

  1092                 case opc_if_icmple:

  1093                     i = generateIf(smapper, byteCodes, i, smapper.popI(), smapper.popI(),

  1094                                    "<=", topMostLabel);

  1095                     break;

  1096                 case opc_if_icmpgt:

  1097                     i = generateIf(smapper, byteCodes, i, smapper.popI(), smapper.popI(),

  1098                                    ">", topMostLabel);

  1099                     break;

  1100                 case opc_if_icmpge:

  1101                     i = generateIf(smapper, byteCodes, i, smapper.popI(), smapper.popI(),

  1102                                    ">=", topMostLabel);

  1103                     break;

  1104                 case opc_goto: {

  1105                     smapper.flush(this);

  1106                     int indx = i + readShortArg(byteCodes, i);

  1107                     goTo(this, i, indx, topMostLabel);

  1108                     i += 2;

  1109                     break;

  1110                 }

  1111                 case opc_lookupswitch: {

  1112                     i = generateLookupSwitch(i, byteCodes, smapper, topMostLabel);

  1113                     break;

  1114                 }

  1115                 case opc_tableswitch: {

  1116                     i = generateTableSwitch(i, byteCodes, smapper, topMostLabel);

  1117                     break;

  1118                 }

  1119                 case opc_invokeinterface: {

  1120                     i = invokeVirtualMethod(byteCodes, i, smapper) + 2;

  1121                     break;

  1122                 }

  1123                 case opc_invokevirtual:

  1124                     i = invokeVirtualMethod(byteCodes, i, smapper);

  1125                     break;

  1126                 case opc_invokespecial:

  1127                     i = invokeStaticMethod(byteCodes, i, smapper, false);

  1128                     break;

  1129                 case opc_invokestatic:

  1130                     i = invokeStaticMethod(byteCodes, i, smapper, true);

  1131                     break;

  1132                 case opc_invokedynamic: {

  1133                     int indx = readUShortArg(byteCodes, i);

  1134                     println("invoke dynamic: " + indx);

  1135                     ByteCodeParser.CPX2 c2 = jc.getCpoolEntry(indx);

  1136                     BootMethodData bm = jc.getBootMethod(c2.cpx1);

  1137                     CPX2 methodHandle = jc.getCpoolEntry(bm.method);

  1138                     println("  type: " + methodHandle.cpx1);

  1139                     String[] mi = jc.getFieldInfoName(methodHandle.cpx2);

  1140                     String mcn = mangleClassName(mi[0]);

  1141                     char[] returnType = {'V'};

  1142                     StringBuilder cnt = new StringBuilder();

  1143                     String mn = findMethodName(mi, cnt, returnType);

  1144                     StringBuilder sb = new StringBuilder();

  1145                     sb.append("We don't handle invokedynamic, need to preprocess ahead-of-time:\n");

  1146                     sb.append("  mi[0]: ").append(mi[0]).append("\n");

  1147                     sb.append("  mi[1]: ").append(mi[1]).append("\n");

  1148                     sb.append("  mi[2]: ").append(mi[2]).append("\n");

  1149                     sb.append("  mn   : ").append(mn).append("\n");

  1150                     sb.append("  name and type: ").append(jc.stringValue(c2.cpx2, true)).append("\n");

  1151                     throw new IOException(sb.toString());

  1152                     /*

  1153                     CPX2 nameAndType = jc.getCpoolEntry(c2.cpx2);

  1154                     String type = jc.StringValue(nameAndType.cpx2);

  1155                     String object = accessClass(mcn) + "(false)";

  1156                     if (mn.startsWith("cons_")) {

  1157                         object += ".constructor";

  1158                     }

  1159                     append("var metHan = ");

  1160                     append(accessStaticMethod(object, mn, mi));

  1161                     append('(');

  1162                     String lookup = accessClass("java_lang_invoke_MethodHandles") + "(false).findFor__Ljava_lang_invoke_MethodHandles$Lookup_2Ljava_lang_Class_2(CLS.$class)";

  1163                     append(lookup);

  1164                     append(", '").append(mi[1]).append("', ");

  1165                     String methodType = accessClass("java_lang_invoke_MethodType") + "(false).fromMethodDescriptorString__Ljava_lang_invoke_MethodType_2Ljava_lang_String_2Ljava_lang_ClassLoader_2(";

  1166                     append(methodType).append("'").append(type).append("', null)");

  1167 //                    if (numArguments > 0) {

  1168 //                        append(vars[0]);

  1169 //                        for (int j = 1; j < numArguments; ++j) {

  1170 //                            append(", ");

  1171 //                            append(vars[j]);

  1172 //                        }

  1173 //                    }

  1174                     append(");");

  1175                     emit(smapper, this, "throw 'Invoke dynamic: ' + @1 + ': ' + metHan;", "" + indx);

  1176                     i += 4;

  1177                     break;

  1178                     */

  1179                 }

  1180                 case opc_new: {

  1181                     int indx = readUShortArg(byteCodes, i);

  1182                     String ci = jc.getClassName(indx);

  1183                     emit(smapper, this, "var @1 = new @2;",

  1184                          smapper.pushA(), accessClass(mangleClassName(ci)));

  1185                     addReference(ci);

  1186                     i += 2;

  1187                     break;

  1188                 }

  1189                 case opc_newarray:

  1190                     int atype = readUByte(byteCodes, ++i);

  1191                     generateNewArray(atype, smapper);

  1192                     break;

  1193                 case opc_anewarray: {

  1194                     int type = readUShortArg(byteCodes, i);

  1195                     i += 2;

  1196                     generateANewArray(type, smapper);

  1197                     break;

  1198                 }

  1199                 case opc_multianewarray: {

  1200                     int type = readUShortArg(byteCodes, i);

  1201                     i += 2;

  1202                     i = generateMultiANewArray(type, byteCodes, i, smapper);

  1203                     break;

  1204                 }

  1205                 case opc_arraylength:

  1206                     smapper.replace(this, VarType.INTEGER, "(@1).length", smapper.getA(0));

  1207                     break;

  1208                 case opc_lastore:

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

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

  1211                     break;

  1212                 case opc_fastore:

  1213                     emit(smapper, this, "Array.at(@3, @2, @1);",

  1214                          smapper.popF(), smapper.popI(), smapper.popA());

  1215                     break;

  1216                 case opc_dastore:

  1217                     emit(smapper, this, "Array.at(@3, @2, @1);",

  1218                          smapper.popD(), smapper.popI(), smapper.popA());

  1219                     break;

  1220                 case opc_aastore:

  1221                     emit(smapper, this, "Array.at(@3, @2, @1);",

  1222                          smapper.popA(), smapper.popI(), smapper.popA());

  1223                     break;

  1224                 case opc_iastore:

  1225                 case opc_bastore:

  1226                 case opc_castore:

  1227                 case opc_sastore:

  1228                     emit(smapper, this, "Array.at(@3, @2, @1);",

  1229                          smapper.popI(), smapper.popI(), smapper.popA());

  1230                     break;

  1231                 case opc_laload:

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

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

  1234                     break;

  1235                 case opc_faload:

  1236                     smapper.replace(this, VarType.FLOAT, "Array.at(@2, @1)",

  1237                          smapper.popI(), smapper.getA(0));

  1238                     break;

  1239                 case opc_daload:

  1240                     smapper.replace(this, VarType.DOUBLE, "Array.at(@2, @1)",

  1241                          smapper.popI(), smapper.getA(0));

  1242                     break;

  1243                 case opc_aaload:

  1244                     smapper.replace(this, VarType.REFERENCE, "Array.at(@2, @1)",

  1245                          smapper.popI(), smapper.getA(0));

  1246                     break;

  1247                 case opc_iaload:

  1248                 case opc_baload:

  1249                 case opc_caload:

  1250                 case opc_saload:

  1251                     smapper.replace(this, VarType.INTEGER, "Array.at(@2, @1)",

  1252                          smapper.popI(), smapper.getA(0));

  1253                     break;

  1254                 case opc_pop:

  1255                 case opc_pop2:

  1256                     smapper.pop(1);

  1257                     debug("/* pop */");

  1258                     break;

  1259                 case opc_dup: {

  1260                     final Variable v = smapper.get(0);

  1261                     if (smapper.isDirty()) {

  1262                         emit(smapper, this, "var @1 = @2;", smapper.pushT(v.getType()), v);

  1263                     } else {

  1264                         smapper.assign(this, v.getType(), v);

  1265                     }

  1266                     break;

  1267                 }

  1268                 case opc_dup2: {

  1269                     final Variable vi1 = smapper.get(0);

  1271                     if (vi1.isCategory2()) {

  1272                         emit(smapper, this, "var @1 = @2;",

  1273                              smapper.pushT(vi1.getType()), vi1);

  1274                     } else {

  1275                         final Variable vi2 = smapper.get(1);

  1276                         emit(smapper, this, "var @1 = @2, @3 = @4;",

  1277                              smapper.pushT(vi2.getType()), vi2,

  1278                              smapper.pushT(vi1.getType()), vi1);

  1279                     }

  1280                     break;

  1281                 }

  1282                 case opc_dup_x1: {

  1283                     final Variable vi1 = smapper.pop(this);

  1284                     final Variable vi2 = smapper.pop(this);

  1285                     final Variable vo3 = smapper.pushT(vi1.getType());

  1286                     final Variable vo2 = smapper.pushT(vi2.getType());

  1287                     final Variable vo1 = smapper.pushT(vi1.getType());

  1289                     emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6;",

  1290                          vo1, vi1, vo2, vi2, vo3, vo1);

  1291                     break;

  1292                 }

  1293                 case opc_dup2_x1: {

  1294                     final Variable vi1 = smapper.pop(this);

  1295                     final Variable vi2 = smapper.pop(this);

  1297                     if (vi1.isCategory2()) {

  1298                         final Variable vo3 = smapper.pushT(vi1.getType());

  1299                         final Variable vo2 = smapper.pushT(vi2.getType());

  1300                         final Variable vo1 = smapper.pushT(vi1.getType());

  1302                         emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6;",

  1303                              vo1, vi1, vo2, vi2, vo3, vo1);

  1304                     } else {

  1305                         final Variable vi3 = smapper.pop(this);

  1306                         final Variable vo5 = smapper.pushT(vi2.getType());

  1307                         final Variable vo4 = smapper.pushT(vi1.getType());

  1308                         final Variable vo3 = smapper.pushT(vi3.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, vi3);

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

  1315                              vo4, vo1, vo5, vo2);

  1316                     }

  1317                     break;

  1318                 }

  1319                 case opc_dup_x2: {

  1320                     final Variable vi1 = smapper.pop(this);

  1321                     final Variable vi2 = smapper.pop(this);

  1323                     if (vi2.isCategory2()) {

  1324                         final Variable vo3 = smapper.pushT(vi1.getType());

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

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

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

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

  1330                     } else {

  1331                         final Variable vi3 = smapper.pop(this);

  1332                         final Variable vo4 = smapper.pushT(vi1.getType());

  1333                         final Variable vo3 = smapper.pushT(vi3.getType());

  1334                         final Variable vo2 = smapper.pushT(vi2.getType());

  1335                         final Variable vo1 = smapper.pushT(vi1.getType());

  1337                         emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6, @7 = @8;",

  1338                              vo1, vi1, vo2, vi2, vo3, vi3, vo4, vo1);

  1339                     }

  1340                     break;

  1341                 }

  1342                 case opc_dup2_x2: {

  1343                     final Variable vi1 = smapper.pop(this);

  1344                     final Variable vi2 = smapper.pop(this);

  1346                     if (vi1.isCategory2()) {

  1347                         if (vi2.isCategory2()) {

  1348                             final Variable vo3 = smapper.pushT(vi1.getType());

  1349                             final Variable vo2 = smapper.pushT(vi2.getType());

  1350                             final Variable vo1 = smapper.pushT(vi1.getType());

  1352                             emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6;",

  1353                                  vo1, vi1, vo2, vi2, vo3, vo1);

  1354                         } else {

  1355                             final Variable vi3 = smapper.pop(this);

  1356                             final Variable vo4 = smapper.pushT(vi1.getType());

  1357                             final Variable vo3 = smapper.pushT(vi3.getType());

  1358                             final Variable vo2 = smapper.pushT(vi2.getType());

  1359                             final Variable vo1 = smapper.pushT(vi1.getType());

  1361                             emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6, @7 = @8;",

  1362                                  vo1, vi1, vo2, vi2, vo3, vi3, vo4, vo1);

  1363                         }

  1364                     } else {

  1365                         final Variable vi3 = smapper.pop(this);

  1367                         if (vi3.isCategory2()) {

  1368                             final Variable vo5 = smapper.pushT(vi2.getType());

  1369                             final Variable vo4 = smapper.pushT(vi1.getType());

  1370                             final Variable vo3 = smapper.pushT(vi3.getType());

  1371                             final Variable vo2 = smapper.pushT(vi2.getType());

  1372                             final Variable vo1 = smapper.pushT(vi1.getType());

  1374                             emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6,",

  1375                                  vo1, vi1, vo2, vi2, vo3, vi3);

  1376                             emit(smapper, this, " @1 = @2, @3 = @4;",

  1377                                  vo4, vo1, vo5, vo2);

  1378                         } else {

  1379                             final Variable vi4 = smapper.pop(this);

  1380                             final Variable vo6 = smapper.pushT(vi2.getType());

  1381                             final Variable vo5 = smapper.pushT(vi1.getType());

  1382                             final Variable vo4 = smapper.pushT(vi4.getType());

  1383                             final Variable vo3 = smapper.pushT(vi3.getType());

  1384                             final Variable vo2 = smapper.pushT(vi2.getType());

  1385                             final Variable vo1 = smapper.pushT(vi1.getType());

  1387                             emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6, @7 = @8,",

  1388                                  vo1, vi1, vo2, vi2, vo3, vi3, vo4, vi4);

  1389                             emit(smapper, this, " @1 = @2, @3 = @4;",

  1390                                  vo5, vo1, vo6, vo2);

  1391                         }

  1392                     }

  1393                     break;

  1394                 }

  1395                 case opc_swap: {

  1396                     final Variable vi1 = smapper.get(0);

  1397                     final Variable vi2 = smapper.get(1);

  1399                     if (vi1.getType() == vi2.getType()) {

  1400                         final Variable tmp = smapper.pushT(vi1.getType());

  1402                         emit(smapper, this, "var @1 = @2, @2 = @3, @3 = @1;",

  1403                              tmp, vi1, vi2);

  1404                         smapper.pop(1);

  1405                     } else {

  1406                         smapper.pop(2);

  1407                         smapper.pushT(vi1.getType());

  1408                         smapper.pushT(vi2.getType());

  1409                     }

  1410                     break;

  1411                 }

  1412                 case opc_bipush:

  1413                     smapper.assign(this, VarType.INTEGER,

  1414                         "(" + Integer.toString(byteCodes[++i]) + ")");

  1415                     break;

  1416                 case opc_sipush:

  1417                     smapper.assign(this, VarType.INTEGER,

  1418                         "(" + Integer.toString(readShortArg(byteCodes, i)) + ")"

  1419                     );

  1420                     i += 2;

  1421                     break;

  1422                 case opc_getfield: {

  1423                     int indx = readUShortArg(byteCodes, i);

  1424                     String[] fi = jc.getFieldInfoName(indx);

  1425                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1426                     FieldData field = findField(fi);

  1427                     if (field == null) {

  1428                         final String mangleClass = mangleClassName(fi[0]);

  1429                         final String mangleClassAccess = accessClassFalse(mangleClass);

  1430                         smapper.replace(this, type, "@2.call(@1)",

  1431                              smapper.getA(0),

  1432                              accessField(mangleClassAccess, null, fi)

  1433                         );

  1434                     } else {

  1435                         final String fieldOwner = mangleClassName(field.cls.getClassName());

  1436                         smapper.replace(this, type, "@1.@2",

  1437                              smapper.getA(0),

  1438                              accessField(fieldOwner, field, fi)

  1439                         );

  1440                     }

  1441                     i += 2;

  1442                     addReference(fi[0]);

  1443                     break;

  1444                 }

  1445                 case opc_putfield: {

  1446                     int indx = readUShortArg(byteCodes, i);

  1447                     String[] fi = jc.getFieldInfoName(indx);

  1448                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1449                     FieldData field = findField(fi);

  1450                     if (field == null) {

  1451                         final String mangleClass = mangleClassName(fi[0]);

  1452                         final String mangleClassAccess = accessClassFalse(mangleClass);

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

  1454                              smapper.popT(type),

  1455                              smapper.popA(),

  1456                              accessField(mangleClassAccess, null, fi)

  1457                         );

  1458                     } else {

  1459                         final String fieldOwner = mangleClassName(field.cls.getClassName());

  1460                         emit(smapper, this, "@2.@3 = @1;",

  1461                              smapper.popT(type),

  1462                              smapper.popA(),

  1463                              accessField(fieldOwner, field, fi)

  1464                         );

  1465                     }

  1466                     i += 2;

  1467                     addReference(fi[0]);

  1468                     break;

  1469                 }

  1470                 case opc_getstatic: {

  1471                     int indx = readUShortArg(byteCodes, i);

  1472                     String[] fi = jc.getFieldInfoName(indx);

  1473                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1474                     String ac = accessClassFalse(mangleClassName(fi[0]));

  1475                     String af = accessField(ac, null, fi);

  1476                     smapper.assign(this, type, af + "()");

  1477                     i += 2;

  1478                     addReference(fi[0]);

  1479                     break;

  1480                 }

  1481                 case opc_putstatic: {

  1482                     int indx = readUShortArg(byteCodes, i);

  1483                     String[] fi = jc.getFieldInfoName(indx);

  1484                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1485                     emit(smapper, this, "@1._@2(@3);",

  1486                          accessClassFalse(mangleClassName(fi[0])), fi[1],

  1487                          smapper.popT(type));

  1488                     i += 2;

  1489                     addReference(fi[0]);

  1490                     break;

  1491                 }

  1492                 case opc_checkcast: {

  1493                     int indx = readUShortArg(byteCodes, i);

  1494                     generateCheckcast(indx, smapper);

  1495                     i += 2;

  1496                     break;

  1497                 }

  1498                 case opc_instanceof: {

  1499                     int indx = readUShortArg(byteCodes, i);

  1500                     generateInstanceOf(indx, smapper);

  1501                     i += 2;

  1502                     break;

  1503                 }

  1504                 case opc_athrow: {

  1505                     final CharSequence v = smapper.popA();

  1506                     smapper.clear();

  1508                     emit(smapper, this, "{ var @1 = @2; throw @2; }",

  1509                          smapper.pushA(), v);

  1510                     break;

  1511                 }

  1513                 case opc_monitorenter: {

  1514                     debug("/* monitor enter */");

  1515                     smapper.popA();

  1516                     break;

  1517                 }

  1519                 case opc_monitorexit: {

  1520                     debug("/* monitor exit */");

  1521                     smapper.popA();

  1522                     break;

  1523                 }

  1525                 case opc_wide:

  1526                     wide = true;

  1527                     break;

  1529                 default: {

  1530                     wide = false;

  1531                     emit(smapper, this, "throw 'unknown bytecode @1';",

  1532                          Integer.toString(c));

  1533                 }

  1534             }

  1535             if (debug(" //")) {

  1536                 generateByteCodeComment(prev, i, byteCodes);

  1537             }

  1538             if (outChanged) {

  1539                 append("\n");

  1540             }

  1541         }

  1542         if (previousTrap != null) {

  1543             generateCatch(previousTrap, byteCodes.length, topMostLabel);

  1544         }

  1545         if (didBranches) {

  1546             append("\n    }\n");

  1547         }

  1548         while (openBraces-- > 0) {

  1549             append('}');

  1550         }

  1551         if (defineProp) {

  1552             append("\n}});");

  1553         } else {

  1554             append("\n};");

  1555         }

  1556         return defineProp;

  1557     }

  1559     private int generateIf(StackMapper mapper, byte[] byteCodes,

  1560         int i, final CharSequence v2, final CharSequence v1,

  1561         final String test, int topMostLabel

  1562     ) throws IOException {

  1563         mapper.flush(this);

  1564         int indx = i + readShortArg(byteCodes, i);

  1565         append("if ((").append(v1)

  1566            .append(") ").append(test).append(" (")

  1567            .append(v2).append(")) ");

  1568         goTo(this, i, indx, topMostLabel);

  1569         return i + 2;

  1570     }

  1572     private int readInt4(byte[] byteCodes, int offset) {

  1573         final int d = byteCodes[offset + 0] << 24;

  1574         final int c = byteCodes[offset + 1] << 16;

  1575         final int b = byteCodes[offset + 2] << 8;

  1576         final int a = byteCodes[offset + 3];

  1577         return (d & 0xff000000) | (c & 0xff0000) | (b & 0xff00) | (a & 0xff);

  1578     }

  1579     private static int readUByte(byte[] byteCodes, int offset) {

  1580         return byteCodes[offset] & 0xff;

  1581     }

  1583     private static int readUShort(byte[] byteCodes, int offset) {

  1584         return ((byteCodes[offset] & 0xff) << 8)

  1585                     | (byteCodes[offset + 1] & 0xff);

  1586     }

  1587     private static int readUShortArg(byte[] byteCodes, int offsetInstruction) {

  1588         return readUShort(byteCodes, offsetInstruction + 1);

  1589     }

  1591     private static int readShort(byte[] byteCodes, int offset) {

  1592         int signed = byteCodes[offset];

  1593         byte b0 = (byte)signed;

  1594         return (b0 << 8) | (byteCodes[offset + 1] & 0xff);

  1595     }

  1596     private static int readShortArg(byte[] byteCodes, int offsetInstruction) {

  1597         return readShort(byteCodes, offsetInstruction + 1);

  1598     }

  1600     private static void countArgs(String descriptor, char[] returnType, StringBuilder sig, StringBuilder cnt) {

  1601         int i = 0;

  1602         Boolean count = null;

  1603         boolean array = false;

  1604         sig.append("__");

  1605         int firstPos = sig.length();

  1606         while (i < descriptor.length()) {

  1607             char ch = descriptor.charAt(i++);

  1608             switch (ch) {

  1609                 case '(':

  1610                     count = true;

  1611                     continue;

  1612                 case ')':

  1613                     count = false;

  1614                     continue;

  1615                 case 'B':

  1616                 case 'C':

  1617                 case 'D':

  1618                 case 'F':

  1619                 case 'I':

  1620                 case 'J':

  1621                 case 'S':

  1622                 case 'Z':

  1623                     if (count) {

  1624                         if (array) {

  1625                             sig.append("_3");

  1626                         }

  1627                         sig.append(ch);

  1628                         if (ch == 'J' || ch == 'D') {

  1629                             cnt.append('1');

  1630                         } else {

  1631                             cnt.append('0');

  1632                         }

  1633                     } else {

  1634                         sig.insert(firstPos, ch);

  1635                         if (array) {

  1636                             returnType[0] = '[';

  1637                             sig.insert(firstPos, "_3");

  1638                         } else {

  1639                             returnType[0] = ch;

  1640                         }

  1641                     }

  1642                     array = false;

  1643                     continue;

  1644                 case 'V':

  1645                     assert !count;

  1646                     returnType[0] = 'V';

  1647                     sig.insert(firstPos, 'V');

  1648                     continue;

  1649                 case 'L':

  1650                     int next = descriptor.indexOf(';', i);

  1651                     String realSig = mangleSig(descriptor, i - 1, next + 1);

  1652                     if (count) {

  1653                         if (array) {

  1654                             sig.append("_3");

  1655                         }

  1656                         sig.append(realSig);

  1657                         cnt.append('0');

  1658                     } else {

  1659                         sig.insert(firstPos, realSig);

  1660                         if (array) {

  1661                             sig.insert(firstPos, "_3");

  1662                         }

  1663                         returnType[0] = 'L';

  1664                     }

  1665                     i = next + 1;

  1666                     array = false;

  1667                     continue;

  1668                 case '[':

  1669                     array = true;

  1670                     continue;

  1671                 default:

  1672                     throw new IllegalStateException("Invalid char: " + ch);

  1673             }

  1674         }

  1675     }

  1677     static String mangleSig(String sig) {

  1678         return mangleSig(sig, 0, sig.length());

  1679     }

  1681     private static String mangleMethodName(String name) {

  1682         StringBuilder sb = new StringBuilder(name.length() * 2);

  1683         int last = name.length();

  1684         for (int i = 0; i < last; i++) {

  1685             final char ch = name.charAt(i);

  1686             switch (ch) {

  1687                 case '_': sb.append("_1"); break;

  1688                 default: sb.append(ch); break;

  1689             }

  1690         }

  1691         return sb.toString();

  1692     }

  1693     private static String mangleSig(String txt, int first, int last) {

  1694         StringBuilder sb = new StringBuilder((last - first) * 2);

  1695         for (int i = first; i < last; i++) {

  1696             final char ch = txt.charAt(i);

  1697             switch (ch) {

  1698                 case '/': sb.append('_'); break;

  1699                 case '_': sb.append("_1"); break;

  1700                 case ';': sb.append("_2"); break;

  1701                 case '[': sb.append("_3"); break;

  1702                 default:

  1703                     if (Character.isJavaIdentifierPart(ch)) {

  1704                         sb.append(ch);

  1705                     } else {

  1706                         sb.append("_0");

  1707                         String hex = Integer.toHexString(ch).toLowerCase();

  1708                         for (int m = hex.length(); m < 4; m++) {

  1709                             sb.append("0");

  1710                         }

  1711                         sb.append(hex);

  1712                     }

  1713                 break;

  1714             }

  1715         }

  1716         return sb.toString();

  1717     }

  1719     private static String mangleClassName(String name) {

  1720         return mangleSig(name);

  1721     }

  1723     private static String findMethodName(MethodData m, StringBuilder cnt) {

  1724         StringBuilder name = new StringBuilder();

  1725         if ("<init>".equals(m.getName())) { // NOI18N

  1726             name.append("cons"); // NOI18N

  1727         } else if ("<clinit>".equals(m.getName())) { // NOI18N

  1728             name.append("class"); // NOI18N

  1729         } else {

  1730             name.append(mangleMethodName(m.getName()));

  1731         }

  1733         countArgs(m.getInternalSig(), new char[1], name, cnt);

  1734         return name.toString();

  1735     }

  1737     static String findMethodName(String[] mi, StringBuilder cnt, char[] returnType) {

  1738         StringBuilder name = new StringBuilder();

  1739         String descr = mi[2];//mi.getDescriptor();

  1740         String nm= mi[1];

  1741         if ("<init>".equals(nm)) { // NOI18N

  1742             name.append("cons"); // NOI18N

  1743         } else {

  1744             name.append(mangleMethodName(nm));

  1745         }

  1746         countArgs(descr, returnType, name, cnt);

  1747         return name.toString();

  1748     }

  1750     private int invokeStaticMethod(byte[] byteCodes, int i, final StackMapper mapper, boolean isStatic)

  1751     throws IOException {

  1752         int methodIndex = readUShortArg(byteCodes, i);

  1753         String[] mi = jc.getFieldInfoName(methodIndex);

  1754         char[] returnType = { 'V' };

  1755         StringBuilder cnt = new StringBuilder();

  1756         String mn = findMethodName(mi, cnt, returnType);

  1758         final int numArguments = isStatic ? cnt.length() : cnt.length() + 1;

  1759         final CharSequence[] vars = new CharSequence[numArguments];

  1761         for (int j = numArguments - 1; j >= 0; --j) {

  1762             vars[j] = mapper.popValue();

  1763         }

  1765         if ((

  1766             "newUpdater__Ljava_util_concurrent_atomic_AtomicIntegerFieldUpdater_2Ljava_lang_Class_2Ljava_lang_String_2".equals(mn)

  1767             && "java/util/concurrent/atomic/AtomicIntegerFieldUpdater".equals(mi[0])

  1768         ) || (

  1769             "newUpdater__Ljava_util_concurrent_atomic_AtomicLongFieldUpdater_2Ljava_lang_Class_2Ljava_lang_String_2".equals(mn)

  1770             && "java/util/concurrent/atomic/AtomicLongFieldUpdater".equals(mi[0])

  1771         )) {

  1772             if (vars[1] instanceof String) {

  1773                 String field = vars[1].toString();

  1774                 if (field.length() > 2 && field.charAt(0) == '"' && field.charAt(field.length() - 1) == '"') {

  1775                     vars[1] = "c._" + field.substring(1, field.length() - 1);

  1776                 }

  1777             }

  1778         }

  1779         if (

  1780             "newUpdater__Ljava_util_concurrent_atomic_AtomicReferenceFieldUpdater_2Ljava_lang_Class_2Ljava_lang_Class_2Ljava_lang_String_2".equals(mn)

  1781             && "java/util/concurrent/atomic/AtomicReferenceFieldUpdater".equals(mi[0])

  1782         ) {

  1783             if (vars[1] instanceof String) {

  1784                 String field = vars[2].toString();

  1785                 if (field.length() > 2 && field.charAt(0) == '"' && field.charAt(field.length() - 1) == '"') {

  1786                     vars[2] = "c._" + field.substring(1, field.length() - 1);

  1787                 }

  1788             }

  1789         }

  1791         if (returnType[0] != 'V') {

  1792             mapper.flush(this);

  1793             append("var ")

  1794                .append(mapper.pushT(VarType.fromFieldType(returnType[0])))

  1795                .append(" = ");

  1796         }

  1798         final String in = mi[0];

  1799         String mcn;

  1800         if (callbacks && (

  1801             in.equals("org/apidesign/html/boot/spi/Fn") ||

  1802             in.equals("org/netbeans/html/boot/spi/Fn")

  1803         )) {

  1804             mcn = "java_lang_Class";

  1805         } else {

  1806             mcn = mangleClassName(in);

  1807         }

  1808         String object = accessClassFalse(mcn);

  1809         if (mn.startsWith("cons_")) {

  1810             object += ".constructor";

  1811         }

  1812         append(accessStaticMethod(object, mn, mi));

  1813         if (isStatic) {

  1814             append('(');

  1815         } else {

  1816             append(".call(");

  1817         }

  1818         if (numArguments > 0) {

  1819             append(vars[0]);

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

  1821                 append(", ");

  1822                 append(vars[j]);

  1823             }

  1824         }

  1825         append(");");

  1826         i += 2;

  1827         addReference(in);

  1828         return i;

  1829     }

  1830     private int invokeVirtualMethod(byte[] byteCodes, int i, final StackMapper mapper)

  1831     throws IOException {

  1832         int methodIndex = readUShortArg(byteCodes, i);

  1833         String[] mi = jc.getFieldInfoName(methodIndex);

  1834         char[] returnType = { 'V' };

  1835         StringBuilder cnt = new StringBuilder();

  1836         String mn = findMethodName(mi, cnt, returnType);

  1838         final int numArguments = cnt.length() + 1;

  1839         final CharSequence[] vars =  new CharSequence[numArguments];

  1841         for (int j = numArguments - 1; j >= 0; --j) {

  1842             vars[j] = mapper.popValue();

  1843         }

  1845         if (returnType[0] != 'V') {

  1846             mapper.flush(this);

  1847             append("var ")

  1848                .append(mapper.pushT(VarType.fromFieldType(returnType[0])))

  1849                .append(" = ");

  1850         }

  1852         append(accessVirtualMethod(vars[0].toString(), mn, mi, numArguments));

  1853         String sep = "";

  1854         for (int j = 1; j < numArguments; ++j) {

  1855             append(sep);

  1856             append(vars[j]);

  1857             sep = ", ";

  1858         }

  1859         append(");");

  1860         i += 2;

  1861         return i;

  1862     }

  1864     private void addReference(String cn) throws IOException {

  1865         if (requireReference(cn)) {

  1866             debug(" /* needs " + cn + " */");

  1867         }

  1868     }

  1870     private void outType(String d, StringBuilder out) {

  1871         int arr = 0;

  1872         while (d.charAt(0) == '[') {

  1873             out.append('A');

  1874             d = d.substring(1);

  1875         }

  1876         if (d.charAt(0) == 'L') {

  1877             assert d.charAt(d.length() - 1) == ';';

  1878             out.append(mangleClassName(d).substring(0, d.length() - 1));

  1879         } else {

  1880             out.append(d);

  1881         }

  1882     }

  1884     private String encodeConstant(int entryIndex) throws IOException {

  1885         String[] classRef = { null };

  1886         String s = jc.stringValue(entryIndex, classRef);

  1887         if (classRef[0] != null) {

  1888             if (classRef[0].startsWith("[")) {

  1889                 s = accessClass("java_lang_Class") + "(false)['forName__Ljava_lang_Class_2Ljava_lang_String_2']('" + classRef[0] + "')";

  1890             } else {

  1891                 addReference(classRef[0]);

  1892                 s = accessClassFalse(mangleClassName(s)) + ".constructor.$class";

  1893             }

  1894         }

  1895         return s;

  1896     }

  1898     private String javaScriptBody(String destObject, MethodData m, boolean isStatic) throws IOException {

  1899         byte[] arr = m.findAnnotationData(true);

  1900         if (arr == null) {

  1901             return null;

  1902         }

  1903         final String jvmType = "Lorg/apidesign/bck2brwsr/core/JavaScriptBody;";

  1904         final String htmlType = "Lnet/java/html/js/JavaScriptBody;";

  1905         class P extends AnnotationParser {

  1906             public P() {

  1907                 super(false, true);

  1908             }

  1910             int cnt;

  1911             String[] args = new String[30];

  1912             String body;

  1913             boolean javacall;

  1914             boolean html4j;

  1916             @Override

  1917             protected void visitAttr(String type, String attr, String at, String value) {

  1918                 if (type.equals(jvmType)) {

  1919                     if ("body".equals(attr)) {

  1920                         body = value;

  1921                     } else if ("args".equals(attr)) {

  1922                         args[cnt++] = value;

  1923                     } else {

  1924                         throw new IllegalArgumentException(attr);

  1925                     }

  1926                 }

  1927                 if (type.equals(htmlType)) {

  1928                     html4j = true;

  1929                     if ("body".equals(attr)) {

  1930                         body = value;

  1931                     } else if ("args".equals(attr)) {

  1932                         args[cnt++] = value;

  1933                     } else if ("javacall".equals(attr)) {

  1934                         javacall = "1".equals(value);

  1935                     } else if ("wait4js".equals(attr)) {

  1936                         // ignore, we always invoke synchronously

  1937                     } else {

  1938                         throw new IllegalArgumentException(attr);

  1939                     }

  1940                 }

  1941             }

  1942         }

  1943         P p = new P();

  1944         p.parse(arr, jc);

  1945         if (p.body == null) {

  1946             return null;

  1947         }

  1948         StringBuilder cnt = new StringBuilder();

  1949         final String mn = findMethodName(m, cnt);

  1950         append("m = ").append(destObject).append(".").append(mn);

  1951         append(" = function(");

  1952         String space = "";

  1953         int index = 0;

  1954         StringBuilder toValue = new StringBuilder();

  1955         for (int i = 0; i < cnt.length(); i++) {

  1956             append(space);

  1957             space = outputArg(this, p.args, index);

  1958             if (p.html4j && space.length() > 0) {

  1959                 toValue.append("\n  ").append(p.args[index]).append(" = ")

  1960                     .append(accessClass("java_lang_Class")).append("(false).toJS(").

  1961                     append(p.args[index]).append(");");

  1962             }

  1963             index++;

  1964         }

  1965         append(") {").append("\n");

  1966         append(toValue.toString());

  1967         if (p.javacall) {

  1968             int lastSlash = jc.getClassName().lastIndexOf('/');

  1969             final String pkg = jc.getClassName().substring(0, lastSlash);

  1970             append(mangleCallbacks(pkg, p.body));

  1971             requireReference(pkg + "/$JsCallbacks$");

  1972         } else {

  1973             append(p.body);

  1974         }

  1975         append("\n}\n");

  1976         return mn;

  1977     }

  1979     private static CharSequence mangleCallbacks(String pkgName, String body) {

  1980         StringBuilder sb = new StringBuilder();

  1981         int pos = 0;

  1982         for (;;) {

  1983             int next = body.indexOf(".@", pos);

  1984             if (next == -1) {

  1985                 sb.append(body.substring(pos));

  1986                 body = sb.toString();

  1987                 break;

  1988             }

  1989             int ident = next;

  1990             while (ident > 0) {

  1991                 if (!Character.isJavaIdentifierPart(body.charAt(--ident))) {

  1992                     ident++;

  1993                     break;

  1994                 }

  1995             }

  1996             String refId = body.substring(ident, next);

  1998             sb.append(body.substring(pos, ident));

  2000             int sigBeg = body.indexOf('(', next);

  2001             int sigEnd = body.indexOf(')', sigBeg);

  2002             int colon4 = body.indexOf("::", next);

  2003             if (sigBeg == -1 || sigEnd == -1 || colon4 == -1) {

  2004                 throw new IllegalStateException("Malformed body " + body);

  2005             }

  2006             String fqn = body.substring(next + 2, colon4);

  2007             String method = body.substring(colon4 + 2, sigBeg);

  2008             String params = body.substring(sigBeg, sigEnd + 1);

  2010             int paramBeg = body.indexOf('(', sigEnd + 1);

  2012             sb.append("vm.").append(mangleClassName(pkgName)).append("_$JsCallbacks$(false)._VM().");

  2013             sb.append(mangleJsCallbacks(fqn, method, params, false));

  2014             sb.append("(").append(refId);

  2015             if (body.charAt(paramBeg + 1) != ')') {

  2016                 sb.append(",");

  2017             }

  2018             pos = paramBeg + 1;

  2019         }

  2020         sb = null;

  2021         pos = 0;

  2022         for (;;) {

  2023             int next = body.indexOf("@", pos);

  2024             if (next == -1) {

  2025                 if (sb == null) {

  2026                     return body;

  2027                 }

  2028                 sb.append(body.substring(pos));

  2029                 return sb;

  2030             }

  2031             if (sb == null) {

  2032                 sb = new StringBuilder();

  2033             }

  2035             sb.append(body.substring(pos, next));

  2037             int sigBeg = body.indexOf('(', next);

  2038             int sigEnd = body.indexOf(')', sigBeg);

  2039             int colon4 = body.indexOf("::", next);

  2040             if (sigBeg == -1 || sigEnd == -1 || colon4 == -1) {

  2041                 throw new IllegalStateException("Malformed body " + body);

  2042             }

  2043             String fqn = body.substring(next + 1, colon4);

  2044             String method = body.substring(colon4 + 2, sigBeg);

  2045             String params = body.substring(sigBeg, sigEnd + 1);

  2047             int paramBeg = body.indexOf('(', sigEnd + 1);

  2049             sb.append("vm.").append(mangleClassName(pkgName)).append("_$JsCallbacks$(false)._VM().");

  2050             sb.append(mangleJsCallbacks(fqn, method, params, true));

  2051             sb.append("(");

  2052             pos = paramBeg + 1;

  2053         }

  2054     }

  2056     static String mangleJsCallbacks(String fqn, String method, String params, boolean isStatic) {

  2057         if (params.startsWith("(")) {

  2058             params = params.substring(1);

  2059         }

  2060         if (params.endsWith(")")) {

  2061             params = params.substring(0, params.length() - 1);

  2062         }

  2063         StringBuilder sb = new StringBuilder();

  2064         final String fqnu = fqn.replace('.', '_');

  2065         final String rfqn = mangleClassName(fqnu);

  2066         final String rm = mangleMethodName(method);

  2067         final String srp;

  2068         {

  2069             StringBuilder pb = new StringBuilder();

  2070             int len = params.length();

  2071             int indx = 0;

  2072             while (indx < len) {

  2073                 char ch = params.charAt(indx);

  2074                 if (ch == '[' || ch == 'L') {

  2075                     int column = params.indexOf(';', indx) + 1;

  2076                     if (column > indx) {

  2077                         String real = params.substring(indx, column);

  2078                         if ("Ljava/lang/String;".equals(real)) {

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

  2080                             indx = column;

  2081                             continue;

  2082                         }

  2083                     }

  2084                     pb.append("Ljava/lang/Object;");

  2085                     indx = column;

  2086                 } else {

  2087                     pb.append(ch);

  2088                     indx++;

  2089                 }

  2090             }

  2091             srp = mangleSig(pb.toString());

  2092         }

  2093         final String rp = mangleSig(params);

  2094         final String mrp = mangleMethodName(rp);

  2095         sb.append(rfqn).append("$").append(rm).

  2096             append('$').append(mrp).append("__Ljava_lang_Object_2");

  2097         if (!isStatic) {

  2098             sb.append('L').append(fqnu).append("_2");

  2099         }

  2100         sb.append(srp);

  2101         return sb.toString();

  2102     }

  2104     private static String className(ClassData jc) {

  2105         //return jc.getName().getInternalName().replace('/', '_');

  2106         return mangleClassName(jc.getClassName());

  2107     }

  2109     private static String[] findAnnotation(

  2110         byte[] arr, ClassData cd, final String className,

  2111         final String... attrNames

  2112     ) throws IOException {

  2113         if (arr == null) {

  2114             return null;

  2115         }

  2116         final String[] values = new String[attrNames.length];

  2117         final boolean[] found = { false };

  2118         final String jvmType = "L" + className.replace('.', '/') + ";";

  2119         AnnotationParser ap = new AnnotationParser(false, true) {

  2120             @Override

  2121             protected void visitAttr(String type, String attr, String at, String value) {

  2122                 if (type.equals(jvmType)) {

  2123                     found[0] = true;

  2124                     for (int i = 0; i < attrNames.length; i++) {

  2125                         if (attrNames[i].equals(attr)) {

  2126                             values[i] = value;

  2127                         }

  2128                     }

  2129                 }

  2130             }

  2132         };

  2133         ap.parse(arr, cd);

  2134         return found[0] ? values : null;

  2135     }

  2137     private CharSequence initField(FieldData v) {

  2138         final String is = v.getInternalSig();

  2139         if (is.length() == 1) {

  2140             switch (is.charAt(0)) {

  2141                 case 'S':

  2142                 case 'J':

  2143                 case 'B':

  2144                 case 'Z':

  2145                 case 'C':

  2146                 case 'I': return " = 0;";

  2147                 case 'F':

  2148                 case 'D': return " = 0.0;";

  2149                 default:

  2150                     throw new IllegalStateException(is);

  2151             }

  2152         }

  2153         return " = null;";

  2154     }

  2156     private void generateAnno(ClassData cd, byte[] data) throws IOException {

  2157         AnnotationParser ap = new AnnotationParser(true, false) {

  2158             int[] cnt = new int[32];

  2159             int depth;

  2161             @Override

  2162             protected void visitAnnotationStart(String attrType, boolean top) throws IOException {

  2163                 final String slashType = attrType.substring(1, attrType.length() - 1);

  2164                 requireReference(slashType);

  2166                 if (cnt[depth]++ > 0) {

  2167                     append(",");

  2168                 }

  2169                 if (top) {

  2170                     append('"').append(attrType).append("\" : ");

  2171                 }

  2172                 append("{\n");

  2173                 cnt[++depth] = 0;

  2174             }

  2176             @Override

  2177             protected void visitAnnotationEnd(String type, boolean top) throws IOException {

  2178                 append("\n}\n");

  2179                 depth--;

  2180             }

  2182             @Override

  2183             protected void visitValueStart(String attrName, char type) throws IOException {

  2184                 if (cnt[depth]++ > 0) {

  2185                     append(",\n");

  2186                 }

  2187                 cnt[++depth] = 0;

  2188                 if (attrName != null) {

  2189                     append('"').append(attrName).append("\" : ");

  2190                 }

  2191                 if (type == '[') {

  2192                     append("[");

  2193                 }

  2194             }

  2196             @Override

  2197             protected void visitValueEnd(String attrName, char type) throws IOException {

  2198                 if (type == '[') {

  2199                     append("]");

  2200                 }

  2201                 depth--;

  2202             }

  2204             @Override

  2205             protected void visitAttr(String type, String attr, String attrType, String value)

  2206             throws IOException {

  2207                 if (attr == null && value == null) {

  2208                     return;

  2209                 }

  2210                 append(value);

  2211             }

  2213             @Override

  2214             protected void visitEnumAttr(String type, String attr, String attrType, String value)

  2215             throws IOException {

  2216                 final String slashType = attrType.substring(1, attrType.length() - 1);

  2217                 requireReference(slashType);

  2219                 final String cn = mangleClassName(slashType);

  2220                 append(accessClassFalse(cn))

  2221                    .append("['valueOf__L").

  2222                     append(cn).

  2223                     append("_2Ljava_lang_String_2']('").

  2224                     append(value).

  2225                     append("')");

  2226             }

  2227         };

  2228         ap.parse(data, cd);

  2229     }

  2231     private static String outputArg(Appendable out, String[] args, int indx) throws IOException {

  2232         final String name = args[indx];

  2233         if (name == null) {

  2234             return "";

  2235         }

  2236         if (name.contains(",")) {

  2237             throw new IOException("Wrong parameter with ',': " + name);

  2238         }

  2239         out.append(name);

  2240         return ",";

  2241     }

  2243     final void emitNoFlush(

  2244         StackMapper sm,

  2245         final String format, final CharSequence... params

  2246     ) throws IOException {

  2247         emitImpl(this, format, params);

  2248     }

  2249     static final void emit(

  2250         StackMapper sm,

  2251         final Appendable out,

  2252         final String format, final CharSequence... params

  2253     ) throws IOException {

  2254         sm.flush(out);

  2255         emitImpl(out, format, params);

  2256     }

  2257     static void emitImpl(final Appendable out,

  2258                              final String format,

  2259                              final CharSequence... params) throws IOException {

  2260         final int length = format.length();

  2262         int processed = 0;

  2263         int paramOffset = format.indexOf('@');

  2264         while ((paramOffset != -1) && (paramOffset < (length - 1))) {

  2265             final char paramChar = format.charAt(paramOffset + 1);

  2266             if ((paramChar >= '1') && (paramChar <= '9')) {

  2267                 final int paramIndex = paramChar - '0' - 1;

  2269                 out.append(format, processed, paramOffset);

  2270                 out.append(params[paramIndex]);

  2272                 ++paramOffset;

  2273                 processed = paramOffset + 1;

  2274             }

  2276             paramOffset = format.indexOf('@', paramOffset + 1);

  2277         }

  2279         out.append(format, processed, length);

  2280     }

  2282     private void generateCatch(TrapData[] traps, int current, int topMostLabel) throws IOException {

  2283         append("} catch (e) {\n");

  2284         int finallyPC = -1;

  2285         for (TrapData e : traps) {

  2286             if (e == null) {

  2287                 break;

  2288             }

  2289             if (e.catch_cpx != 0) { //not finally

  2290                 final String classInternalName = jc.getClassName(e.catch_cpx);

  2291                 addReference(classInternalName);

  2292                 append("e = vm.java_lang_Class(false).bck2BrwsrThrwrbl(e);");

  2293                 append("if (e['$instOf_" + mangleClassName(classInternalName) + "']) {");

  2294                 append("var stA0 = e;");

  2295                 goTo(this, current, e.handler_pc, topMostLabel);

  2296                 append("}\n");

  2297             } else {

  2298                 finallyPC = e.handler_pc;

  2299             }

  2300         }

  2301         if (finallyPC == -1) {

  2302             append("throw e;");

  2303         } else {

  2304             append("var stA0 = e;");

  2305             goTo(this, current, finallyPC, topMostLabel);

  2306         }

  2307         append("\n}");

  2308     }

  2310     private static void goTo(Appendable out, int current, int to, int canBack) throws IOException {

  2311         if (to < current) {

  2312             if (canBack < to) {

  2313                 out.append("{ gt = 0; continue X_" + to + "; }");

  2314             } else {

  2315                 out.append("{ gt = " + to + "; continue X_0; }");

  2316             }

  2317         } else {

  2318             out.append("{ gt = " + to + "; break IF; }");

  2319         }

  2320     }

  2322     private static void emitIf(

  2323         StackMapper sm,

  2324         Appendable out, String pattern,

  2325         CharSequence param,

  2326         int current, int to, int canBack

  2327     ) throws IOException {

  2328         sm.flush(out);

  2329         emitImpl(out, pattern, param);

  2330         goTo(out, current, to, canBack);

  2331     }

  2333     private void generateNewArray(int atype, final StackMapper smapper) throws IOException, IllegalStateException {

  2334         String jvmType;

  2335         switch (atype) {

  2336             case 4: jvmType = "[Z"; break;

  2337             case 5: jvmType = "[C"; break;

  2338             case 6: jvmType = "[F"; break;

  2339             case 7: jvmType = "[D"; break;

  2340             case 8: jvmType = "[B"; break;

  2341             case 9: jvmType = "[S"; break;

  2342             case 10: jvmType = "[I"; break;

  2343             case 11: jvmType = "[J"; break;

  2344             default: throw new IllegalStateException("Array type: " + atype);

  2345         }

  2346         emit(smapper, this,

  2347             "var @2 = Array.prototype['newArray__Ljava_lang_Object_2ZLjava_lang_String_2Ljava_lang_Object_2I'](true, '@3', null, @1);",

  2348              smapper.popI(), smapper.pushA(), jvmType);

  2349     }

  2351     private void generateANewArray(int type, final StackMapper smapper) throws IOException {

  2352         String typeName = jc.getClassName(type);

  2353         String ref = "null";

  2354         if (typeName.startsWith("[")) {

  2355             typeName = "'[" + typeName + "'";

  2356         } else {

  2357             ref = "vm." + mangleClassName(typeName);

  2358             typeName = "'[L" + typeName + ";'";

  2359         }

  2360         emit(smapper, this,

  2361             "var @2 = Array.prototype['newArray__Ljava_lang_Object_2ZLjava_lang_String_2Ljava_lang_Object_2I'](false, @3, @4, @1);",

  2362              smapper.popI(), smapper.pushA(), typeName, ref);

  2363     }

  2365     private int generateMultiANewArray(int type, final byte[] byteCodes, int i, final StackMapper smapper) throws IOException {

  2366         String typeName = jc.getClassName(type);

  2367         int dim = readUByte(byteCodes, ++i);

  2368         StringBuilder dims = new StringBuilder();

  2369         dims.append('[');

  2370         for (int d = 0; d < dim; d++) {

  2371             if (d != 0) {

  2372                 dims.insert(1, ",");

  2373             }

  2374             dims.insert(1, smapper.popI());

  2375         }

  2376         dims.append(']');

  2377         String fn = "null";

  2378         if (typeName.charAt(dim) == 'L') {

  2379             fn = "vm." + mangleClassName(typeName.substring(dim + 1, typeName.length() - 1));

  2380         }

  2381         emit(smapper, this,

  2382             "var @2 = Array.prototype['multiNewArray__Ljava_lang_Object_2Ljava_lang_String_2_3ILjava_lang_Object_2']('@3', @1, @4);",

  2383              dims.toString(), smapper.pushA(), typeName, fn

  2384         );

  2385         return i;

  2386     }

  2388     private int generateTableSwitch(int i, final byte[] byteCodes, final StackMapper smapper, int topMostLabel) throws IOException {

  2389         int table = i / 4 * 4 + 4;

  2390         int dflt = i + readInt4(byteCodes, table);

  2391         table += 4;

  2392         int low = readInt4(byteCodes, table);

  2393         table += 4;

  2394         int high = readInt4(byteCodes, table);

  2395         table += 4;

  2396         final CharSequence swVar = smapper.popValue();

  2397         smapper.flush(this);

  2398         append("switch (").append(swVar).append(") {\n");

  2399         while (low <= high) {

  2400             int offset = i + readInt4(byteCodes, table);

  2401             table += 4;

  2402             append("  case " + low).append(":"); goTo(this, i, offset, topMostLabel); append('\n');

  2403             low++;

  2404         }

  2405         append("  default: ");

  2406         goTo(this, i, dflt, topMostLabel);

  2407         append("\n}");

  2408         i = table - 1;

  2409         return i;

  2410     }

  2412     private int generateLookupSwitch(int i, final byte[] byteCodes, final StackMapper smapper, int topMostLabel) throws IOException {

  2413         int table = i / 4 * 4 + 4;

  2414         int dflt = i + readInt4(byteCodes, table);

  2415         table += 4;

  2416         int n = readInt4(byteCodes, table);

  2417         table += 4;

  2418         final CharSequence swVar = smapper.popValue();

  2419         smapper.flush(this);

  2420         append("switch (").append(swVar).append(") {\n");

  2421         while (n-- > 0) {

  2422             int cnstnt = readInt4(byteCodes, table);

  2423             table += 4;

  2424             int offset = i + readInt4(byteCodes, table);

  2425             table += 4;

  2426             append("  case " + cnstnt).append(": "); goTo(this, i, offset, topMostLabel); append('\n');

  2427         }

  2428         append("  default: ");

  2429         goTo(this, i, dflt, topMostLabel);

  2430         append("\n}");

  2431         i = table - 1;

  2432         return i;

  2433     }

  2435     private void generateInstanceOf(int indx, final StackMapper smapper) throws IOException {

  2436         String type = jc.getClassName(indx);

  2437         if (!type.startsWith("[")) {

  2438             emit(smapper, this,

  2439                     "var @2 = @1 != null && @1['$instOf_@3'] ? 1 : 0;",

  2440                  smapper.popA(), smapper.pushI(),

  2441                  mangleClassName(type));

  2442         } else {

  2443             int cnt = 0;

  2444             while (type.charAt(cnt) == '[') {

  2445                 cnt++;

  2446             }

  2447             if (type.charAt(cnt) == 'L') {

  2448                 String component = type.substring(cnt + 1, type.length() - 1);

  2449                 requireReference(component);

  2450                 type = "vm." + mangleClassName(component);

  2451                 emit(smapper, this,

  2452                     "var @2 = Array.prototype['isInstance__ZLjava_lang_Object_2ILjava_lang_Object_2'](@1, @4, @3);",

  2453                     smapper.popA(), smapper.pushI(),

  2454                     type, "" + cnt

  2455                 );

  2456             } else {

  2457                 emit(smapper, this,

  2458                     "var @2 = Array.prototype['isInstance__ZLjava_lang_Object_2Ljava_lang_String_2'](@1, '@3');",

  2459                     smapper.popA(), smapper.pushI(), type

  2460                 );

  2461             }

  2462         }

  2463     }

  2465     private void generateCheckcast(int indx, final StackMapper smapper) throws IOException {

  2466         String type = jc.getClassName(indx);

  2467         if (!type.startsWith("[")) {

  2468             emitNoFlush(smapper,

  2469                  "if (@1 !== null && !@1['$instOf_@2']) vm.java_lang_Class(false).castEx();",

  2470                  smapper.getT(0, VarType.REFERENCE, false), mangleClassName(type));

  2471         } else {

  2472             int cnt = 0;

  2473             while (type.charAt(cnt) == '[') {

  2474                 cnt++;

  2475             }

  2476             if (type.charAt(cnt) == 'L') {

  2477                 String component = type.substring(cnt + 1, type.length() - 1);

  2478                 requireReference(component);

  2479                 type = "vm." + mangleClassName(component);

  2480                 emitNoFlush(smapper,

  2481                     "if (@1 !== null && !Array.prototype['isInstance__ZLjava_lang_Object_2ILjava_lang_Object_2'](@1, @3, @2)) vm.java_lang_Class(false).castEx();",

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

  2483                 );

  2484             } else {

  2485                 emitNoFlush(smapper,

  2486                     "if (@1 !== null && !Array.prototype['isInstance__ZLjava_lang_Object_2Ljava_lang_String_2'](@1, '@2')) vm.java_lang_Class(false).castEx();",

  2487                      smapper.getT(0, VarType.REFERENCE, false), type

  2488                 );

  2489             }

  2490         }

  2491     }

  2493     private void generateByteCodeComment(int prev, int i, final byte[] byteCodes) throws IOException {

  2494         for (int j = prev; j <= i; j++) {

  2495             append(" ");

  2496             final int cc = readUByte(byteCodes, j);

  2497             append(Integer.toString(cc));

  2498         }

  2499     }

  2501     @JavaScriptBody(args = "msg", body = "")

  2502     private static void println(String msg) {

  2503         System.err.println(msg);

  2504     }

  2505 }

author	Jaroslav Tulach <jaroslav.tulach@apidesign.org>
	Mon, 25 Jan 2016 05:53:21 +0100
changeset 1856	9cdc403018b5
parent 1855	34efbdde4eca
child 1857	f1344425bcb1
permissions	-rw-r--r--