hg/bck2brwsr: rt/vm/src/main/java/org/apidesign/vm4brwsr/ByteCodeToJavaScript.java@de609e0cdab5

     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;

    44     private final NumberOperations numbers = new NumberOperations();

    46     protected ByteCodeToJavaScript(Appendable out) {

    47         this.out = out;

    48     }

    50     @Override

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

    52         out.append(csq);

    53         outChanged = true;

    54         return this;

    55     }

    57     @Override

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

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

    60         outChanged = true;

    61         return this;

    62     }

    64     @Override

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

    66         out.append(c);

    67         outChanged = true;

    68         return this;

    69     }

    71     /* Collects additional required resources.

    72      *

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

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

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

    76      */

    77     protected abstract boolean requireReference(String internalClassName);

    79     /*

    80      * @param resourcePath name of resources to read

    81      */

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

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

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

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

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

    89      *

    90      * @param className suggested name of the class

    91      */

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

    93         return className + " = ";

    94     }

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

    96         return classOperation;

    97     }

    99     final String accessClassFalse(String classOperation) {

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

   101             return "c";

   102         }

   103         classRefs.addIfMissing(classOperation);

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

   105     }

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

   108         return null;

   109     }

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

   112     throws IOException {

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

   114         return object + "." + mangledName;

   115     }

   117     protected String accessStaticMethod(

   118                              String object,

   119                              String mangledName,

   120                              String[] fieldInfoName) throws IOException {

   121         return object + "." + mangledName;

   122     }

   124     protected String accessVirtualMethod(

   125             String object,

   126             String mangledName,

   127             String[] fieldInfoName,

   128             int params

   129     ) throws IOException {

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

   131     }

   133     protected void declareClass(ClassData classData, String mangledName)

   134     throws IOException {

   135         append(mangledName);

   136     }

   138     protected void declaredField(FieldData fieldData,

   139                                  String destObject,

   140                                  String mangledName) throws IOException {

   141     }

   143     protected void declaredMethod(MethodData methodData,

   144                                   String destObject,

   145                                   String mangledName) throws IOException {

   146     }

   148     /** Prints out a debug message.

   149      *

   150      * @param msg the message

   151      * @return true if the message has been printed

   152      * @throws IOException

   153      */

   154     boolean debug(String msg) throws IOException {

   155         append(msg);

   156         return true;

   157     }

   159     /**

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

   161      *

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

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

   164      *

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

   166      */

   168     public String compile(InputStream classFile) throws IOException {

   169         return compile(new ClassData(classFile));

   170     }

   172     protected String compile(ClassData classData) throws IOException {

   173         this.jc = classData;

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

   175         try {

   176             return compileImpl(cn);

   177         } catch (IOException ex) {

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

   179         }

   180     }

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

   183         this.numbers.reset();

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

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

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

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

   188             );

   189         }

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

   191         {

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

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

   194                 "resource", "processByteCode"

   195             );

   196             if (arr != null) {

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

   198                     requireScript(arr[0]);

   199                 }

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

   201                     return null;

   202                 }

   203             }

   204         }

   205         final String jsResource;

   206         {

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

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

   209                 "value"

   210             );

   211             if (arr != null) {

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

   213                     jsResource = arr[0];

   214                 } else {

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

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

   217                 }

   218             } else {

   219                 jsResource = null;

   220             }

   221         }

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

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

   224             "container", "prototype"

   225         );

   226         StringArray toInitilize = new StringArray();

   227         final String className = className(jc);

   228         append("\n\n");

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

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

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

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

   233         if (proto == null) {

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

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

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

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

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

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

   240         } else {

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

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

   243                 proto[0] = "p";

   244             }

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

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

   247         }

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

   249             if (v.isStatic()) {

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

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

   252                         continue;

   253                     }

   254                 }

   255                 append("\n  CLS['fld_").append(v.getName()).append("']").append(initField(v));

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

   257                     .append("  if (arguments.length == 1) CLS['fld_").append(v.getName())

   258                     .append("'] = v; return CLS['fld_").

   259                     append(v.getName()).append("']; };");

   260             } else {

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

   262                     .append("  if (arguments.length == 1) this['fld_").

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

   264                     .append("'] = v; return this['fld_").

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

   266                     .append("']; };");

   267             }

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

   270         }

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

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

   273             if (javaScriptOnly(onlyArr)) continue;

   274             String destObject;

   275             String mn;

   276             append("\n    ");

   277             if (m.isStatic()) {

   278                 destObject = "c";

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

   280             } else {

   281                 if (m.isConstructor()) {

   282                     destObject = "CLS";

   283                     mn = generateInstanceMethod(destObject, m);

   284                 } else {

   285                     destObject = "c";

   286                     mn = generateInstanceMethod(destObject, m);

   287                 }

   288             }

   289             declaredMethod(m, destObject, mn);

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

   291             if (runAnno != null) {

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

   293                 AnnotationParser ap = new GenerateAnno(true, false);

   294                 ap.parse(runAnno, jc);

   295                 append("\n    };");

   296             }

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

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

   299         }

   300         append(numbers.generate());

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

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

   303         String instOfName = "$instOf_" + className;

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

   305         if (jc.isInterface()) {

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

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

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

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

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

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

   312                 }

   313             }

   314         }

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

   316             String intrfc = mangleClassName(superInterface);

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

   318             requireReference(superInterface);

   319         }

   320         append("\n    }");

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

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

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

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

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

   326         append(accessClass("java_lang_Class")).append("(true);");

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

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

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

   330         {

   331             boolean first = true;

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

   333                 if (!first) {

   334                     append(",");

   335                 }

   336                 requireReference(intrfc);

   337                 String mangledIface = mangleClassName(intrfc);

   338                 append("\n        ");

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

   340                 first = false;

   341             }

   342         }

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

   344         int flags = jc.getAccessFlags();

   345         if (jc.hasEnclosingMethod()) {

   346             flags |= 0x10000;

   347         }

   348         append("\n    CLS.$class.access = ").append(flags+";");

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

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

   351         if (classAnno != null) {

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

   353             AnnotationParser ap = new GenerateAnno(true, false);

   354             ap.parse(classAnno, jc);

   355             append("\n    };");

   356         }

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

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

   359         }

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

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

   362         }

   363         classRefs.clear();

   365         if (jsResource != null) {

   366             requireResource(jsResource);

   367         }

   369         append("\n  }");

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

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

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

   373         append("\n    }");

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

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

   376             if (javaScriptOnly(onlyArr)) continue;

   377             if (!v.isStatic()) {

   378                 append("\n    this['fld_").

   379                     append(className).append('_').

   380                     append(v.getName()).append("']").append(initField(v));

   381             }

   382         }

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

   384         append("\n  }");

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

   386         append("\n};");

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

   389         declareClass(jc, className);

   390         append(";\n");

   392 //        StringBuilder sb = new StringBuilder();

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

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

   395 //        }

   396         return "";

   397     }

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

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

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

   402             "name", "value"

   403         );

   404         if (only != null) {

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

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

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

   408             }

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

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

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

   412             }

   413             return true;

   414         }

   415         return false;

   416     }

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

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

   419         if (jsb != null) {

   420             return jsb;

   421         }

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

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

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

   425             if (defineProp) {

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

   427             } else {

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

   429             }

   430         }

   431         return mn;

   432     }

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

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

   436         if (jsb != null) {

   437             return jsb;

   438         }

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

   440         generateMethod(destObject, mn, m);

   441         return mn;

   442     }

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

   445             throws IOException {

   446         final StackMapIterator stackMapIterator = m.createStackMapIterator();

   447         TrapDataIterator trap = m.getTrapDataIterator();

   448         final LocalsMapper lmapper =

   449                 new LocalsMapper(stackMapIterator.getArguments());

   451         boolean defineProp =

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

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

   455         if (defineProp) {

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

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

   458         } else {

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

   460         }

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

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

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

   465         if (byteCodes == null) {

   466             byte[] defaultAttr = m.getDefaultAttribute();

   467             if (defaultAttr != null) {

   468                 append("  return ");

   469                 AnnotationParser ap = new GenerateAnno(true, false);

   470                 ap.parseDefault(defaultAttr, jc);

   471                 append(";\n");

   472             } else {

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

   474                    this

   475                    .append(jc.getClassName()).append('.')

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

   477                 }

   478             }

   479             if (defineProp) {

   480                 append("}});");

   481             } else {

   482                 append("};");

   483             }

   484             return defineProp;

   485         }

   487         final StackMapper smapper = new StackMapper();

   489         if (!m.isStatic()) {

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

   491         }

   493         int lastStackFrame;

   494         TrapData[] previousTrap = null;

   495         boolean wide = false;

   496         boolean didBranches;

   497         if (stackMapIterator.isEmpty()) {

   498             didBranches = false;

   499             lastStackFrame = 0;

   500         } else {

   501             didBranches = true;

   502             lastStackFrame = -1;

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

   504         }

   506         int openBraces = 0;

   507         int topMostLabel = 0;

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

   509             int prev = i;

   510             outChanged = false;

   511             stackMapIterator.advanceTo(i);

   512             boolean changeInCatch = trap.advanceTo(i);

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

   514                 if (previousTrap != null) {

   515                     generateCatch(previousTrap, i, topMostLabel);

   516                     previousTrap = null;

   517                 }

   518             }

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

   520                 smapper.flush(this);

   521                 if (i != 0) {

   522                     append("    }\n");

   523                 }

   524                 if (openBraces > 64) {

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

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

   527                     }

   528                     openBraces = 1;

   529                     topMostLabel = i;

   530                 }

   532                 lastStackFrame = stackMapIterator.getFrameIndex();

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

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

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

   536                 openBraces++;

   537                 changeInCatch = true;

   538             } else {

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

   540             }

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

   542                 append("try {");

   543                 previousTrap = trap.current();

   544             }

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

   546             switch (c) {

   547                 case opc_aload_0:

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

   549                     break;

   550                 case opc_iload_0:

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

   552                     break;

   553                 case opc_lload_0:

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

   555                     break;

   556                 case opc_fload_0:

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

   558                     break;

   559                 case opc_dload_0:

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

   561                     break;

   562                 case opc_aload_1:

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

   564                     break;

   565                 case opc_iload_1:

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

   567                     break;

   568                 case opc_lload_1:

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

   570                     break;

   571                 case opc_fload_1:

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

   573                     break;

   574                 case opc_dload_1:

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

   576                     break;

   577                 case opc_aload_2:

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

   579                     break;

   580                 case opc_iload_2:

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

   582                     break;

   583                 case opc_lload_2:

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

   585                     break;

   586                 case opc_fload_2:

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

   588                     break;

   589                 case opc_dload_2:

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

   591                     break;

   592                 case opc_aload_3:

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

   594                     break;

   595                 case opc_iload_3:

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

   597                     break;

   598                 case opc_lload_3:

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

   600                     break;

   601                 case opc_fload_3:

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

   603                     break;

   604                 case opc_dload_3:

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

   606                     break;

   607                 case opc_iload: {

   608                     ++i;

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

   610                                           : readUByte(byteCodes, i);

   611                     wide = false;

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

   613                     break;

   614                 }

   615                 case opc_lload: {

   616                     ++i;

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

   618                                           : readUByte(byteCodes, i);

   619                     wide = false;

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

   621                     break;

   622                 }

   623                 case opc_fload: {

   624                     ++i;

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

   626                                           : readUByte(byteCodes, i);

   627                     wide = false;

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

   629                     break;

   630                 }

   631                 case opc_dload: {

   632                     ++i;

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

   634                                           : readUByte(byteCodes, i);

   635                     wide = false;

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

   637                     break;

   638                 }

   639                 case opc_aload: {

   640                     ++i;

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

   642                                           : readUByte(byteCodes, i);

   643                     wide = false;

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

   645                     break;

   646                 }

   647                 case opc_istore: {

   648                     ++i;

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

   650                                           : readUByte(byteCodes, i);

   651                     wide = false;

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

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

   654                     break;

   655                 }

   656                 case opc_lstore: {

   657                     ++i;

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

   659                                           : readUByte(byteCodes, i);

   660                     wide = false;

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

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

   663                     break;

   664                 }

   665                 case opc_fstore: {

   666                     ++i;

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

   668                                           : readUByte(byteCodes, i);

   669                     wide = false;

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

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

   672                     break;

   673                 }

   674                 case opc_dstore: {

   675                     ++i;

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

   677                                           : readUByte(byteCodes, i);

   678                     wide = false;

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

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

   681                     break;

   682                 }

   683                 case opc_astore: {

   684                     ++i;

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

   686                                           : readUByte(byteCodes, i);

   687                     wide = false;

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

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

   690                     break;

   691                 }

   692                 case opc_astore_0:

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

   694                     break;

   695                 case opc_istore_0:

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

   697                     break;

   698                 case opc_lstore_0:

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

   700                     break;

   701                 case opc_fstore_0:

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

   703                     break;

   704                 case opc_dstore_0:

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

   706                     break;

   707                 case opc_astore_1:

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

   709                     break;

   710                 case opc_istore_1:

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

   712                     break;

   713                 case opc_lstore_1:

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

   715                     break;

   716                 case opc_fstore_1:

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

   718                     break;

   719                 case opc_dstore_1:

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

   721                     break;

   722                 case opc_astore_2:

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

   724                     break;

   725                 case opc_istore_2:

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

   727                     break;

   728                 case opc_lstore_2:

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

   730                     break;

   731                 case opc_fstore_2:

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

   733                     break;

   734                 case opc_dstore_2:

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

   736                     break;

   737                 case opc_astore_3:

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

   739                     break;

   740                 case opc_istore_3:

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

   742                     break;

   743                 case opc_lstore_3:

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

   745                     break;

   746                 case opc_fstore_3:

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

   748                     break;

   749                 case opc_dstore_3:

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

   751                     break;

   752                 case opc_iadd:

   753                     smapper.replace(this, VarType.INTEGER, "(((@1) + (@2)) | 0)", smapper.getI(1), smapper.popI());

   754                     break;

   755                 case opc_ladd:

   756                     smapper.replace(this, VarType.LONG, numbers.add64(), smapper.getL(1), smapper.popL());

   757                     break;

   758                 case opc_fadd:

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

   760                     break;

   761                 case opc_dadd:

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

   763                     break;

   764                 case opc_isub:

   765                     smapper.replace(this, VarType.INTEGER, "(((@1) - (@2)) | 0)", smapper.getI(1), smapper.popI());

   766                     break;

   767                 case opc_lsub:

   768                     smapper.replace(this, VarType.LONG, numbers.sub64(), smapper.getL(1), smapper.popL());

   769                     break;

   770                 case opc_fsub:

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

   772                     break;

   773                 case opc_dsub:

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

   775                     break;

   776                 case opc_imul:

   777                     smapper.replace(this, VarType.INTEGER, numbers.mul32(), smapper.getI(1), smapper.popI());

   778                     break;

   779                 case opc_lmul:

   780                     smapper.replace(this, VarType.LONG, numbers.mul64(), smapper.getL(1), smapper.popL());

   781                     break;

   782                 case opc_fmul:

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

   784                     break;

   785                 case opc_dmul:

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

   787                     break;

   788                 case opc_idiv:

   789                     smapper.replace(this, VarType.INTEGER, numbers.div32(),

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

   791                     break;

   792                 case opc_ldiv:

   793                     smapper.replace(this, VarType.LONG, numbers.div64(),

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

   795                     break;

   796                 case opc_fdiv:

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

   798                     break;

   799                 case opc_ddiv:

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

   801                     break;

   802                 case opc_irem:

   803                     smapper.replace(this, VarType.INTEGER, numbers.mod32(),

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

   805                     break;

   806                 case opc_lrem:

   807                     smapper.replace(this, VarType.LONG, numbers.mod64(),

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

   809                     break;

   810                 case opc_frem:

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

   812                     break;

   813                 case opc_drem:

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

   815                     break;

   816                 case opc_iand:

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

   818                     break;

   819                 case opc_land:

   820                     smapper.replace(this, VarType.LONG, numbers.and64(), smapper.getL(1), smapper.popL());

   821                     break;

   822                 case opc_ior:

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

   824                     break;

   825                 case opc_lor:

   826                     smapper.replace(this, VarType.LONG, numbers.or64(), smapper.getL(1), smapper.popL());

   827                     break;

   828                 case opc_ixor:

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

   830                     break;

   831                 case opc_lxor:

   832                     smapper.replace(this, VarType.LONG, numbers.xor64(), smapper.getL(1), smapper.popL());

   833                     break;

   834                 case opc_ineg:

   835                     smapper.replace(this, VarType.INTEGER, "(-(@1) | 0)", smapper.getI(0));

   836                     break;

   837                 case opc_lneg:

   838                     smapper.replace(this, VarType.LONG, numbers.neg64(), smapper.getL(0));

   839                     break;

   840                 case opc_fneg:

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

   842                     break;

   843                 case opc_dneg:

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

   845                     break;

   846                 case opc_ishl:

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

   848                     break;

   849                 case opc_lshl:

   850                     smapper.replace(this, VarType.LONG, numbers.shl64(), smapper.getL(1), smapper.popI());

   851                     break;

   852                 case opc_ishr:

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

   854                     break;

   855                 case opc_lshr:

   856                     smapper.replace(this, VarType.LONG, numbers.shr64(), smapper.getL(1), smapper.popI());

   857                     break;

   858                 case opc_iushr:

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

   860                     break;

   861                 case opc_lushr:

   862                     smapper.replace(this, VarType.LONG, numbers.ushr64(), smapper.getL(1), smapper.popI());

   863                     break;

   864                 case opc_iinc: {

   865                     ++i;

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

   867                                              : readUByte(byteCodes, i);

   868                     ++i;

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

   870                                             : byteCodes[i];

   871                     wide = false;

   872                     if (incrBy == 1) {

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

   874                     } else {

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

   876                              lmapper.getI(varIndx),

   877                              Integer.toString(incrBy));

   878                     }

   879                     break;

   880                 }

   881                 case opc_return:

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

   883                     break;

   884                 case opc_ireturn:

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

   886                     break;

   887                 case opc_lreturn:

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

   889                     break;

   890                 case opc_freturn:

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

   892                     break;

   893                 case opc_dreturn:

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

   895                     break;

   896                 case opc_areturn:

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

   898                     break;

   899                 case opc_i2l:

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

   901                     break;

   902                 case opc_i2f:

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

   904                     break;

   905                 case opc_i2d:

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

   907                     break;

   908                 case opc_l2i:

   909                     smapper.replace(this, VarType.INTEGER, "((@1) | 0)", smapper.getL(0));

   910                     break;

   911                     // max int check?

   912                 case opc_l2f:

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

   914                     break;

   915                 case opc_l2d:

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

   917                     break;

   918                 case opc_f2d:

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

   920                          smapper.getF(0));

   921                     break;

   922                 case opc_d2f:

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

   924                          smapper.getD(0));

   925                     break;

   926                 case opc_f2i:

   927                     smapper.replace(this, VarType.INTEGER, "((@1) | 0)",

   928                          smapper.getF(0));

   929                     break;

   930                 case opc_f2l:

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

   932                          smapper.getF(0));

   933                     break;

   934                 case opc_d2i:

   935                     smapper.replace(this, VarType.INTEGER, "((@1)| 0)",

   936                          smapper.getD(0));

   937                     break;

   938                 case opc_d2l:

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

   940                     break;

   941                 case opc_i2b:

   942                     smapper.replace(this, VarType.INTEGER, "(((@1) << 24) >> 24)", smapper.getI(0));

   943                     break;

   944                 case opc_i2c:

   945                 case opc_i2s:

   946                     smapper.replace(this, VarType.INTEGER, "(((@1) << 16) >> 16)", smapper.getI(0));

   947                     break;

   948                 case opc_aconst_null:

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

   950                     break;

   951                 case opc_iconst_m1:

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

   953                     break;

   954                 case opc_iconst_0:

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

   956                     break;

   957                 case opc_dconst_0:

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

   959                     break;

   960                 case opc_lconst_0:

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

   962                     break;

   963                 case opc_fconst_0:

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

   965                     break;

   966                 case opc_iconst_1:

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

   968                     break;

   969                 case opc_lconst_1:

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

   971                     break;

   972                 case opc_fconst_1:

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

   974                     break;

   975                 case opc_dconst_1:

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

   977                     break;

   978                 case opc_iconst_2:

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

   980                     break;

   981                 case opc_fconst_2:

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

   983                     break;

   984                 case opc_iconst_3:

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

   986                     break;

   987                 case opc_iconst_4:

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

   989                     break;

   990                 case opc_iconst_5:

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

   992                     break;

   993                 case opc_ldc: {

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

   995                     String v = encodeConstant(indx);

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

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

   998                     break;

   999                 }

  1000                 case opc_ldc_w:

  1001                 case opc_ldc2_w: {

  1002                     int indx = readUShortArg(byteCodes, i);

  1003                     i += 2;

  1004                     String v = encodeConstant(indx);

  1005                     int type = VarType.fromConstantType(jc.getTag(indx));

  1006                     if (type == VarType.LONG) {

  1007                         final Long lv = new Long(v);

  1008                         final int low = (int)(lv.longValue() & 0xFFFFFFFF);

  1009                         final int hi = (int)(lv.longValue() >> 32);

  1010                         if (hi == 0) {

  1011                             smapper.assign(this, VarType.LONG, "0x" + Integer.toHexString(low));

  1012                         } else {

  1013                             smapper.assign(this, VarType.LONG,

  1014                                 "0x" + Integer.toHexString(hi) + ".next32(0x" +

  1015                                     Integer.toHexString(low) + ")"

  1016                             );

  1017                         }

  1018                     } else {

  1019                         smapper.assign(this, type, v);

  1020                     }

  1021                     break;

  1022                 }

  1023                 case opc_lcmp:

  1024                     smapper.replace(this, VarType.INTEGER, numbers.compare64(), smapper.popL(), smapper.getL(0));

  1025                     break;

  1026                 case opc_fcmpl:

  1027                 case opc_fcmpg:

  1028                     emit(smapper, this, "var @3 = (@2 == @1) ? 0 : ((@2 < @1) ? -1 : 1);",

  1029                          smapper.popF(), smapper.popF(), smapper.pushI());

  1030                     break;

  1031                 case opc_dcmpl:

  1032                 case opc_dcmpg:

  1033                     emit(smapper, this, "var @3 = (@2 == @1) ? 0 : ((@2 < @1) ? -1 : 1);",

  1034                          smapper.popD(), smapper.popD(), smapper.pushI());

  1035                     break;

  1036                 case opc_if_acmpeq:

  1037                     i = generateIf(smapper, byteCodes, i, smapper.popA(), smapper.popA(),

  1038                                    "===", topMostLabel);

  1039                     break;

  1040                 case opc_if_acmpne:

  1041                     i = generateIf(smapper, byteCodes, i, smapper.popA(), smapper.popA(),

  1042                                    "!==", topMostLabel);

  1043                     break;

  1044                 case opc_if_icmpeq:

  1045                     i = generateIf(smapper, byteCodes, i, smapper.popI(), smapper.popI(),

  1046                                    "==", topMostLabel);

  1047                     break;

  1048                 case opc_ifeq: {

  1049                     int indx = i + readShortArg(byteCodes, i);

  1050                     emitIf(smapper, this, "if ((@1) == 0) ",

  1051                          smapper.popI(), i, indx, topMostLabel);

  1052                     i += 2;

  1053                     break;

  1054                 }

  1055                 case opc_ifne: {

  1056                     int indx = i + readShortArg(byteCodes, i);

  1057                     emitIf(smapper, this, "if ((@1) != 0) ",

  1058                          smapper.popI(), i, indx, topMostLabel);

  1059                     i += 2;

  1060                     break;

  1061                 }

  1062                 case opc_iflt: {

  1063                     int indx = i + readShortArg(byteCodes, i);

  1064                     emitIf(smapper, this, "if ((@1) < 0) ",

  1065                          smapper.popI(), i, indx, topMostLabel);

  1066                     i += 2;

  1067                     break;

  1068                 }

  1069                 case opc_ifle: {

  1070                     int indx = i + readShortArg(byteCodes, i);

  1071                     emitIf(smapper, this, "if ((@1) <= 0) ",

  1072                          smapper.popI(), i, indx, topMostLabel);

  1073                     i += 2;

  1074                     break;

  1075                 }

  1076                 case opc_ifgt: {

  1077                     int indx = i + readShortArg(byteCodes, i);

  1078                     emitIf(smapper, this, "if ((@1) > 0) ",

  1079                          smapper.popI(), i, indx, topMostLabel);

  1080                     i += 2;

  1081                     break;

  1082                 }

  1083                 case opc_ifge: {

  1084                     int indx = i + readShortArg(byteCodes, i);

  1085                     emitIf(smapper, this, "if ((@1) >= 0) ",

  1086                          smapper.popI(), i, indx, topMostLabel);

  1087                     i += 2;

  1088                     break;

  1089                 }

  1090                 case opc_ifnonnull: {

  1091                     int indx = i + readShortArg(byteCodes, i);

  1092                     emitIf(smapper, this, "if ((@1) !== null) ",

  1093                          smapper.popA(), i, indx, topMostLabel);

  1094                     i += 2;

  1095                     break;

  1096                 }

  1097                 case opc_ifnull: {

  1098                     int indx = i + readShortArg(byteCodes, i);

  1099                     emitIf(smapper, this, "if ((@1) === null) ",

  1100                          smapper.popA(), i, indx, topMostLabel);

  1101                     i += 2;

  1102                     break;

  1103                 }

  1104                 case opc_if_icmpne:

  1105                     i = generateIf(smapper, byteCodes, i, smapper.popI(), smapper.popI(),

  1106                                    "!=", topMostLabel);

  1107                     break;

  1108                 case opc_if_icmplt:

  1109                     i = generateIf(smapper, byteCodes, i, smapper.popI(), smapper.popI(),

  1110                                    "<", topMostLabel);

  1111                     break;

  1112                 case opc_if_icmple:

  1113                     i = generateIf(smapper, byteCodes, i, smapper.popI(), smapper.popI(),

  1114                                    "<=", topMostLabel);

  1115                     break;

  1116                 case opc_if_icmpgt:

  1117                     i = generateIf(smapper, byteCodes, i, smapper.popI(), smapper.popI(),

  1118                                    ">", topMostLabel);

  1119                     break;

  1120                 case opc_if_icmpge:

  1121                     i = generateIf(smapper, byteCodes, i, smapper.popI(), smapper.popI(),

  1122                                    ">=", topMostLabel);

  1123                     break;

  1124                 case opc_goto: {

  1125                     smapper.flush(this);

  1126                     int indx = i + readShortArg(byteCodes, i);

  1127                     goTo(this, i, indx, topMostLabel);

  1128                     i += 2;

  1129                     break;

  1130                 }

  1131                 case opc_lookupswitch: {

  1132                     i = generateLookupSwitch(i, byteCodes, smapper, topMostLabel);

  1133                     break;

  1134                 }

  1135                 case opc_tableswitch: {

  1136                     i = generateTableSwitch(i, byteCodes, smapper, topMostLabel);

  1137                     break;

  1138                 }

  1139                 case opc_invokeinterface: {

  1140                     i = invokeVirtualMethod(byteCodes, i, smapper) + 2;

  1141                     break;

  1142                 }

  1143                 case opc_invokevirtual:

  1144                     i = invokeVirtualMethod(byteCodes, i, smapper);

  1145                     break;

  1146                 case opc_invokespecial:

  1147                     i = invokeStaticMethod(byteCodes, i, smapper, false);

  1148                     break;

  1149                 case opc_invokestatic:

  1150                     i = invokeStaticMethod(byteCodes, i, smapper, true);

  1151                     break;

  1152                 case opc_invokedynamic: {

  1153                     int indx = readUShortArg(byteCodes, i);

  1154                     println("invoke dynamic: " + indx);

  1155                     ByteCodeParser.CPX2 c2 = jc.getCpoolEntry(indx);

  1156                     BootMethodData bm = jc.getBootMethod(c2.cpx1);

  1157                     CPX2 methodHandle = jc.getCpoolEntry(bm.method);

  1158                     println("  type: " + methodHandle.cpx1);

  1159                     String[] mi = jc.getFieldInfoName(methodHandle.cpx2);

  1160                     String mcn = mangleClassName(mi[0]);

  1161                     char[] returnType = {'V'};

  1162                     StringBuilder cnt = new StringBuilder();

  1163                     String mn = findMethodName(mi, cnt, returnType);

  1164                     StringBuilder sb = new StringBuilder();

  1165                     sb.append("We don't handle invokedynamic, need to preprocess ahead-of-time:\n");

  1166                     sb.append("  mi[0]: ").append(mi[0]).append("\n");

  1167                     sb.append("  mi[1]: ").append(mi[1]).append("\n");

  1168                     sb.append("  mi[2]: ").append(mi[2]).append("\n");

  1169                     sb.append("  mn   : ").append(mn).append("\n");

  1170                     sb.append("  name and type: ").append(jc.stringValue(c2.cpx2, true)).append("\n");

  1171                     throw new IOException(sb.toString());

  1172                     /*

  1173                     CPX2 nameAndType = jc.getCpoolEntry(c2.cpx2);

  1174                     String type = jc.StringValue(nameAndType.cpx2);

  1175                     String object = accessClass(mcn) + "(false)";

  1176                     if (mn.startsWith("cons_")) {

  1177                         object += ".constructor";

  1178                     }

  1179                     append("var metHan = ");

  1180                     append(accessStaticMethod(object, mn, mi));

  1181                     append('(');

  1182                     String lookup = accessClass("java_lang_invoke_MethodHandles") + "(false).findFor__Ljava_lang_invoke_MethodHandles$Lookup_2Ljava_lang_Class_2(CLS.$class)";

  1183                     append(lookup);

  1184                     append(", '").append(mi[1]).append("', ");

  1185                     String methodType = accessClass("java_lang_invoke_MethodType") + "(false).fromMethodDescriptorString__Ljava_lang_invoke_MethodType_2Ljava_lang_String_2Ljava_lang_ClassLoader_2(";

  1186                     append(methodType).append("'").append(type).append("', null)");

  1187 //                    if (numArguments > 0) {

  1188 //                        append(vars[0]);

  1189 //                        for (int j = 1; j < numArguments; ++j) {

  1190 //                            append(", ");

  1191 //                            append(vars[j]);

  1192 //                        }

  1193 //                    }

  1194                     append(");");

  1195                     emit(smapper, this, "throw 'Invoke dynamic: ' + @1 + ': ' + metHan;", "" + indx);

  1196                     i += 4;

  1197                     break;

  1198                     */

  1199                 }

  1200                 case opc_new: {

  1201                     int indx = readUShortArg(byteCodes, i);

  1202                     String ci = jc.getClassName(indx);

  1203                     emit(smapper, this, "var @1 = new @2;",

  1204                          smapper.pushA(), accessClass(mangleClassName(ci)));

  1205                     addReference(ci);

  1206                     i += 2;

  1207                     break;

  1208                 }

  1209                 case opc_newarray:

  1210                     int atype = readUByte(byteCodes, ++i);

  1211                     generateNewArray(atype, smapper);

  1212                     break;

  1213                 case opc_anewarray: {

  1214                     int type = readUShortArg(byteCodes, i);

  1215                     i += 2;

  1216                     generateANewArray(type, smapper);

  1217                     break;

  1218                 }

  1219                 case opc_multianewarray: {

  1220                     int type = readUShortArg(byteCodes, i);

  1221                     i += 2;

  1222                     i = generateMultiANewArray(type, byteCodes, i, smapper);

  1223                     break;

  1224                 }

  1225                 case opc_arraylength:

  1226                     smapper.replace(this, VarType.INTEGER, "(@1).length", smapper.getA(0));

  1227                     break;

  1228                 case opc_lastore:

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

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

  1231                     break;

  1232                 case opc_fastore:

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

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

  1235                     break;

  1236                 case opc_dastore:

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

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

  1239                     break;

  1240                 case opc_aastore:

  1241                     emit(smapper, this, "Array.at(@3, @2, @1);",

  1242                          smapper.popA(), smapper.popI(), smapper.popA());

  1243                     break;

  1244                 case opc_iastore:

  1245                 case opc_bastore:

  1246                 case opc_castore:

  1247                 case opc_sastore:

  1248                     emit(smapper, this, "Array.at(@3, @2, @1);",

  1249                          smapper.popI(), smapper.popI(), smapper.popA());

  1250                     break;

  1251                 case opc_laload:

  1252                     smapper.replace(this, VarType.LONG, "(@2[@1] || Array.at(@2, @1))",

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

  1254                     break;

  1255                 case opc_faload:

  1256                     smapper.replace(this, VarType.FLOAT, "(@2[@1] || Array.at(@2, @1))",

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

  1258                     break;

  1259                 case opc_daload:

  1260                     smapper.replace(this, VarType.DOUBLE, "(@2[@1] || Array.at(@2, @1))",

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

  1262                     break;

  1263                 case opc_aaload:

  1264                     smapper.replace(this, VarType.REFERENCE, "(@2[@1] || Array.at(@2, @1))",

  1265                          smapper.popI(), smapper.getA(0));

  1266                     break;

  1267                 case opc_iaload:

  1268                 case opc_baload:

  1269                 case opc_caload:

  1270                 case opc_saload:

  1271                     smapper.replace(this, VarType.INTEGER, "(@2[@1] || Array.at(@2, @1))",

  1272                          smapper.popI(), smapper.getA(0));

  1273                     break;

  1274                 case opc_pop:

  1275                 case opc_pop2:

  1276                     smapper.pop(1);

  1277                     debug("/* pop */");

  1278                     break;

  1279                 case opc_dup: {

  1280                     final Variable v = smapper.get(0);

  1281                     if (smapper.isDirty()) {

  1282                         emit(smapper, this, "var @1 = @2;", smapper.pushT(v.getType()), v);

  1283                     } else {

  1284                         smapper.assign(this, v.getType(), v);

  1285                     }

  1286                     break;

  1287                 }

  1288                 case opc_dup2: {

  1289                     final Variable vi1 = smapper.get(0);

  1291                     if (vi1.isCategory2()) {

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

  1293                              smapper.pushT(vi1.getType()), vi1);

  1294                     } else {

  1295                         final Variable vi2 = smapper.get(1);

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

  1297                              smapper.pushT(vi2.getType()), vi2,

  1298                              smapper.pushT(vi1.getType()), vi1);

  1299                     }

  1300                     break;

  1301                 }

  1302                 case opc_dup_x1: {

  1303                     final Variable vi1 = smapper.pop(this);

  1304                     final Variable vi2 = smapper.pop(this);

  1305                     final Variable vo3 = smapper.pushT(vi1.getType());

  1306                     final Variable vo2 = smapper.pushT(vi2.getType());

  1307                     final Variable vo1 = smapper.pushT(vi1.getType());

  1309                     emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6;",

  1310                          vo1, vi1, vo2, vi2, vo3, vo1);

  1311                     break;

  1312                 }

  1313                 case opc_dup2_x1: {

  1314                     final Variable vi1 = smapper.pop(this);

  1315                     final Variable vi2 = smapper.pop(this);

  1317                     if (vi1.isCategory2()) {

  1318                         final Variable vo3 = smapper.pushT(vi1.getType());

  1319                         final Variable vo2 = smapper.pushT(vi2.getType());

  1320                         final Variable vo1 = smapper.pushT(vi1.getType());

  1322                         emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6;",

  1323                              vo1, vi1, vo2, vi2, vo3, vo1);

  1324                     } else {

  1325                         final Variable vi3 = smapper.pop(this);

  1326                         final Variable vo5 = smapper.pushT(vi2.getType());

  1327                         final Variable vo4 = smapper.pushT(vi1.getType());

  1328                         final Variable vo3 = smapper.pushT(vi3.getType());

  1329                         final Variable vo2 = smapper.pushT(vi2.getType());

  1330                         final Variable vo1 = smapper.pushT(vi1.getType());

  1332                         emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6,",

  1333                              vo1, vi1, vo2, vi2, vo3, vi3);

  1334                         emit(smapper, this, " @1 = @2, @3 = @4;",

  1335                              vo4, vo1, vo5, vo2);

  1336                     }

  1337                     break;

  1338                 }

  1339                 case opc_dup_x2: {

  1340                     final Variable vi1 = smapper.pop(this);

  1341                     final Variable vi2 = smapper.pop(this);

  1343                     if (vi2.isCategory2()) {

  1344                         final Variable vo3 = smapper.pushT(vi1.getType());

  1345                         final Variable vo2 = smapper.pushT(vi2.getType());

  1346                         final Variable vo1 = smapper.pushT(vi1.getType());

  1348                         emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6;",

  1349                              vo1, vi1, vo2, vi2, vo3, vo1);

  1350                     } else {

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

  1352                         final Variable vo4 = smapper.pushT(vi1.getType());

  1353                         final Variable vo3 = smapper.pushT(vi3.getType());

  1354                         final Variable vo2 = smapper.pushT(vi2.getType());

  1355                         final Variable vo1 = smapper.pushT(vi1.getType());

  1357                         emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6, @7 = @8;",

  1358                              vo1, vi1, vo2, vi2, vo3, vi3, vo4, vo1);

  1359                     }

  1360                     break;

  1361                 }

  1362                 case opc_dup2_x2: {

  1363                     final Variable vi1 = smapper.pop(this);

  1364                     final Variable vi2 = smapper.pop(this);

  1366                     if (vi1.isCategory2()) {

  1367                         if (vi2.isCategory2()) {

  1368                             final Variable vo3 = smapper.pushT(vi1.getType());

  1369                             final Variable vo2 = smapper.pushT(vi2.getType());

  1370                             final Variable vo1 = smapper.pushT(vi1.getType());

  1372                             emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6;",

  1373                                  vo1, vi1, vo2, vi2, vo3, vo1);

  1374                         } else {

  1375                             final Variable vi3 = smapper.pop(this);

  1376                             final Variable vo4 = smapper.pushT(vi1.getType());

  1377                             final Variable vo3 = smapper.pushT(vi3.getType());

  1378                             final Variable vo2 = smapper.pushT(vi2.getType());

  1379                             final Variable vo1 = smapper.pushT(vi1.getType());

  1381                             emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6, @7 = @8;",

  1382                                  vo1, vi1, vo2, vi2, vo3, vi3, vo4, vo1);

  1383                         }

  1384                     } else {

  1385                         final Variable vi3 = smapper.pop(this);

  1387                         if (vi3.isCategory2()) {

  1388                             final Variable vo5 = smapper.pushT(vi2.getType());

  1389                             final Variable vo4 = smapper.pushT(vi1.getType());

  1390                             final Variable vo3 = smapper.pushT(vi3.getType());

  1391                             final Variable vo2 = smapper.pushT(vi2.getType());

  1392                             final Variable vo1 = smapper.pushT(vi1.getType());

  1394                             emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6,",

  1395                                  vo1, vi1, vo2, vi2, vo3, vi3);

  1396                             emit(smapper, this, " @1 = @2, @3 = @4;",

  1397                                  vo4, vo1, vo5, vo2);

  1398                         } else {

  1399                             final Variable vi4 = smapper.pop(this);

  1400                             final Variable vo6 = smapper.pushT(vi2.getType());

  1401                             final Variable vo5 = smapper.pushT(vi1.getType());

  1402                             final Variable vo4 = smapper.pushT(vi4.getType());

  1403                             final Variable vo3 = smapper.pushT(vi3.getType());

  1404                             final Variable vo2 = smapper.pushT(vi2.getType());

  1405                             final Variable vo1 = smapper.pushT(vi1.getType());

  1407                             emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6, @7 = @8,",

  1408                                  vo1, vi1, vo2, vi2, vo3, vi3, vo4, vi4);

  1409                             emit(smapper, this, " @1 = @2, @3 = @4;",

  1410                                  vo5, vo1, vo6, vo2);

  1411                         }

  1412                     }

  1413                     break;

  1414                 }

  1415                 case opc_swap: {

  1416                     final Variable vi1 = smapper.get(0);

  1417                     final Variable vi2 = smapper.get(1);

  1419                     if (vi1.getType() == vi2.getType()) {

  1420                         final Variable tmp = smapper.pushT(vi1.getType());

  1422                         emit(smapper, this, "var @1 = @2, @2 = @3, @3 = @1;",

  1423                              tmp, vi1, vi2);

  1424                         smapper.pop(1);

  1425                     } else {

  1426                         smapper.pop(2);

  1427                         smapper.pushT(vi1.getType());

  1428                         smapper.pushT(vi2.getType());

  1429                     }

  1430                     break;

  1431                 }

  1432                 case opc_bipush:

  1433                     smapper.assign(this, VarType.INTEGER,

  1434                         "(" + Integer.toString(byteCodes[++i]) + ")");

  1435                     break;

  1436                 case opc_sipush:

  1437                     smapper.assign(this, VarType.INTEGER,

  1438                         "(" + Integer.toString(readShortArg(byteCodes, i)) + ")"

  1439                     );

  1440                     i += 2;

  1441                     break;

  1442                 case opc_getfield: {

  1443                     int indx = readUShortArg(byteCodes, i);

  1444                     String[] fi = jc.getFieldInfoName(indx);

  1445                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1446                     FieldData field = findField(fi);

  1447                     if (field == null) {

  1448                         final String mangleClass = mangleClassName(fi[0]);

  1449                         final String mangleClassAccess = accessClassFalse(mangleClass);

  1450                         smapper.replace(this, type, "@2.call(@1)",

  1451                              smapper.getA(0),

  1452                              accessField(mangleClassAccess, null, fi)

  1453                         );

  1454                     } else {

  1455                         final String fieldOwner = mangleClassName(field.cls.getClassName());

  1456                         smapper.replace(this, type, "@1@2",

  1457                              smapper.getA(0),

  1458                              accessField(fieldOwner, field, fi)

  1459                         );

  1460                     }

  1461                     i += 2;

  1462                     addReference(fi[0]);

  1463                     break;

  1464                 }

  1465                 case opc_putfield: {

  1466                     int indx = readUShortArg(byteCodes, i);

  1467                     String[] fi = jc.getFieldInfoName(indx);

  1468                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1469                     FieldData field = findField(fi);

  1470                     if (field == null) {

  1471                         final String mangleClass = mangleClassName(fi[0]);

  1472                         final String mangleClassAccess = accessClassFalse(mangleClass);

  1473                         emit(smapper, this, "@3.call(@2, @1);",

  1474                              smapper.popT(type),

  1475                              smapper.popA(),

  1476                              accessField(mangleClassAccess, null, fi)

  1477                         );

  1478                     } else {

  1479                         final String fieldOwner = mangleClassName(field.cls.getClassName());

  1480                         emit(smapper, this, "@2@3 = @1;",

  1481                              smapper.popT(type),

  1482                              smapper.popA(),

  1483                              accessField(fieldOwner, field, fi)

  1484                         );

  1485                     }

  1486                     i += 2;

  1487                     addReference(fi[0]);

  1488                     break;

  1489                 }

  1490                 case opc_getstatic: {

  1491                     int indx = readUShortArg(byteCodes, i);

  1492                     String[] fi = jc.getFieldInfoName(indx);

  1493                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1494                     if (DirectlLibraries.isScriptLibrary(fi[0]) && fi[0].endsWith("/Exports")) {

  1495                         smapper.assign(this, type, fi[1]);

  1496                     } else {

  1497                         String ac = accessClassFalse(mangleClassName(fi[0]));

  1498                         FieldData field = findField(fi);

  1499                         String af = accessField(ac, field, fi);

  1500                         smapper.assign(this, type, af + "()");

  1501                         addReference(fi[0]);

  1502                     }

  1503                     i += 2;

  1504                     break;

  1505                 }

  1506                 case opc_putstatic: {

  1507                     int indx = readUShortArg(byteCodes, i);

  1508                     String[] fi = jc.getFieldInfoName(indx);

  1509                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1510                     emit(smapper, this, "@1._@2(@3);",

  1511                          accessClassFalse(mangleClassName(fi[0])), fi[1],

  1512                          smapper.popT(type));

  1513                     i += 2;

  1514                     addReference(fi[0]);

  1515                     break;

  1516                 }

  1517                 case opc_checkcast: {

  1518                     int indx = readUShortArg(byteCodes, i);

  1519                     generateCheckcast(indx, smapper);

  1520                     i += 2;

  1521                     break;

  1522                 }

  1523                 case opc_instanceof: {

  1524                     int indx = readUShortArg(byteCodes, i);

  1525                     generateInstanceOf(indx, smapper);

  1526                     i += 2;

  1527                     break;

  1528                 }

  1529                 case opc_athrow: {

  1530                     final CharSequence v = smapper.popA();

  1531                     smapper.clear();

  1533                     emit(smapper, this, "{ var @1 = @2; throw @2; }",

  1534                          smapper.pushA(), v);

  1535                     break;

  1536                 }

  1538                 case opc_monitorenter: {

  1539                     debug("/* monitor enter */");

  1540                     smapper.popA();

  1541                     break;

  1542                 }

  1544                 case opc_monitorexit: {

  1545                     debug("/* monitor exit */");

  1546                     smapper.popA();

  1547                     break;

  1548                 }

  1550                 case opc_wide:

  1551                     wide = true;

  1552                     break;

  1554                 default: {

  1555                     wide = false;

  1556                     emit(smapper, this, "throw 'unknown bytecode @1';",

  1557                          Integer.toString(c));

  1558                 }

  1559             }

  1560             if (debug(" //")) {

  1561                 generateByteCodeComment(prev, i, byteCodes);

  1562             }

  1563             if (outChanged) {

  1564                 append("\n");

  1565             }

  1566         }

  1567         if (previousTrap != null) {

  1568             generateCatch(previousTrap, byteCodes.length, topMostLabel);

  1569         }

  1570         if (didBranches) {

  1571             append("\n    }\n");

  1572         }

  1573         while (openBraces-- > 0) {

  1574             append('}');

  1575         }

  1576         if (defineProp) {

  1577             append("\n}});");

  1578         } else {

  1579             append("\n};");

  1580         }

  1581         return defineProp;

  1582     }

  1584     private int generateIf(StackMapper mapper, byte[] byteCodes,

  1585         int i, final CharSequence v2, final CharSequence v1,

  1586         final String test, int topMostLabel

  1587     ) throws IOException {

  1588         mapper.flush(this);

  1589         int indx = i + readShortArg(byteCodes, i);

  1590         append("if ((").append(v1)

  1591            .append(") ").append(test).append(" (")

  1592            .append(v2).append(")) ");

  1593         goTo(this, i, indx, topMostLabel);

  1594         return i + 2;

  1595     }

  1597     private int readInt4(byte[] byteCodes, int offset) {

  1598         final int d = byteCodes[offset + 0] << 24;

  1599         final int c = byteCodes[offset + 1] << 16;

  1600         final int b = byteCodes[offset + 2] << 8;

  1601         final int a = byteCodes[offset + 3];

  1602         return (d & 0xff000000) | (c & 0xff0000) | (b & 0xff00) | (a & 0xff);

  1603     }

  1604     private static int readUByte(byte[] byteCodes, int offset) {

  1605         return byteCodes[offset] & 0xff;

  1606     }

  1608     private static int readUShort(byte[] byteCodes, int offset) {

  1609         return ((byteCodes[offset] & 0xff) << 8)

  1610                     | (byteCodes[offset + 1] & 0xff);

  1611     }

  1612     private static int readUShortArg(byte[] byteCodes, int offsetInstruction) {

  1613         return readUShort(byteCodes, offsetInstruction + 1);

  1614     }

  1616     private static int readShort(byte[] byteCodes, int offset) {

  1617         int signed = byteCodes[offset];

  1618         byte b0 = (byte)signed;

  1619         return (b0 << 8) | (byteCodes[offset + 1] & 0xff);

  1620     }

  1621     private static int readShortArg(byte[] byteCodes, int offsetInstruction) {

  1622         return readShort(byteCodes, offsetInstruction + 1);

  1623     }

  1625     private static void countArgs(String descriptor, char[] returnType, StringBuilder sig, StringBuilder cnt) {

  1626         int i = 0;

  1627         Boolean count = null;

  1628         boolean array = false;

  1629         sig.append("__");

  1630         int firstPos = sig.length();

  1631         while (i < descriptor.length()) {

  1632             char ch = descriptor.charAt(i++);

  1633             switch (ch) {

  1634                 case '(':

  1635                     count = true;

  1636                     continue;

  1637                 case ')':

  1638                     count = false;

  1639                     continue;

  1640                 case 'B':

  1641                 case 'C':

  1642                 case 'D':

  1643                 case 'F':

  1644                 case 'I':

  1645                 case 'J':

  1646                 case 'S':

  1647                 case 'Z':

  1648                     if (count) {

  1649                         if (array) {

  1650                             sig.append("_3");

  1651                         }

  1652                         sig.append(ch);

  1653                         if (ch == 'J' || ch == 'D') {

  1654                             cnt.append('1');

  1655                         } else {

  1656                             cnt.append('0');

  1657                         }

  1658                     } else {

  1659                         sig.insert(firstPos, ch);

  1660                         if (array) {

  1661                             returnType[0] = '[';

  1662                             sig.insert(firstPos, "_3");

  1663                         } else {

  1664                             returnType[0] = ch;

  1665                         }

  1666                     }

  1667                     array = false;

  1668                     continue;

  1669                 case 'V':

  1670                     assert !count;

  1671                     returnType[0] = 'V';

  1672                     sig.insert(firstPos, 'V');

  1673                     continue;

  1674                 case 'L':

  1675                     int next = descriptor.indexOf(';', i);

  1676                     String realSig = mangleSig(descriptor, i - 1, next + 1);

  1677                     if (count) {

  1678                         if (array) {

  1679                             sig.append("_3");

  1680                         }

  1681                         sig.append(realSig);

  1682                         cnt.append('0');

  1683                     } else {

  1684                         sig.insert(firstPos, realSig);

  1685                         if (array) {

  1686                             sig.insert(firstPos, "_3");

  1687                         }

  1688                         returnType[0] = 'L';

  1689                     }

  1690                     i = next + 1;

  1691                     array = false;

  1692                     continue;

  1693                 case '[':

  1694                     array = true;

  1695                     continue;

  1696                 default:

  1697                     throw new IllegalStateException("Invalid char: " + ch);

  1698             }

  1699         }

  1700     }

  1702     static String mangleSig(String sig) {

  1703         return mangleSig(sig, 0, sig.length());

  1704     }

  1706     private static String mangleMethodName(String name) {

  1707         StringBuilder sb = new StringBuilder(name.length() * 2);

  1708         int last = name.length();

  1709         for (int i = 0; i < last; i++) {

  1710             final char ch = name.charAt(i);

  1711             switch (ch) {

  1712                 case '_': sb.append("_1"); break;

  1713                 default: sb.append(ch); break;

  1714             }

  1715         }

  1716         return sb.toString();

  1717     }

  1718     private static String mangleSig(String txt, int first, int last) {

  1719         StringBuilder sb = new StringBuilder((last - first) * 2);

  1720         for (int i = first; i < last; i++) {

  1721             final char ch = txt.charAt(i);

  1722             switch (ch) {

  1723                 case '/': sb.append('_'); break;

  1724                 case '_': sb.append("_1"); break;

  1725                 case ';': sb.append("_2"); break;

  1726                 case '[': sb.append("_3"); break;

  1727                 default:

  1728                     if (Character.isJavaIdentifierPart(ch)) {

  1729                         sb.append(ch);

  1730                     } else {

  1731                         sb.append("_0");

  1732                         String hex = Integer.toHexString(ch).toLowerCase();

  1733                         for (int m = hex.length(); m < 4; m++) {

  1734                             sb.append("0");

  1735                         }

  1736                         sb.append(hex);

  1737                     }

  1738                 break;

  1739             }

  1740         }

  1741         return sb.toString();

  1742     }

  1744     private static String mangleClassName(String name) {

  1745         return mangleSig(name);

  1746     }

  1748     private static String findMethodName(MethodData m, StringBuilder cnt) {

  1749         StringBuilder name = new StringBuilder();

  1750         if ("<init>".equals(m.getName())) { // NOI18N

  1751             name.append("cons"); // NOI18N

  1752         } else if ("<clinit>".equals(m.getName())) { // NOI18N

  1753             name.append("class"); // NOI18N

  1754         } else {

  1755             name.append(mangleMethodName(m.getName()));

  1756         }

  1758         countArgs(m.getInternalSig(), new char[1], name, cnt);

  1759         return name.toString();

  1760     }

  1762     static String findMethodName(String[] mi, StringBuilder cnt, char[] returnType) {

  1763         StringBuilder name = new StringBuilder();

  1764         String descr = mi[2];//mi.getDescriptor();

  1765         String nm= mi[1];

  1766         if ("<init>".equals(nm)) { // NOI18N

  1767             name.append("cons"); // NOI18N

  1768         } else {

  1769             name.append(mangleMethodName(nm));

  1770         }

  1771         countArgs(descr, returnType, name, cnt);

  1772         return name.toString();

  1773     }

  1775     private int invokeStaticMethod(byte[] byteCodes, int i, final StackMapper mapper, boolean isStatic)

  1776     throws IOException {

  1777         int methodIndex = readUShortArg(byteCodes, i);

  1778         String[] mi = jc.getFieldInfoName(methodIndex);

  1779         char[] returnType = { 'V' };

  1780         StringBuilder cnt = new StringBuilder();

  1781         String mn = findMethodName(mi, cnt, returnType);

  1783         final int numArguments = isStatic ? cnt.length() : cnt.length() + 1;

  1784         final CharSequence[] vars = new CharSequence[numArguments];

  1786         for (int j = numArguments - 1; j >= 0; --j) {

  1787             vars[j] = mapper.popValue();

  1788         }

  1790         if ((

  1791             "newUpdater__Ljava_util_concurrent_atomic_AtomicIntegerFieldUpdater_2Ljava_lang_Class_2Ljava_lang_String_2".equals(mn)

  1792             && "java/util/concurrent/atomic/AtomicIntegerFieldUpdater".equals(mi[0])

  1793         ) || (

  1794             "newUpdater__Ljava_util_concurrent_atomic_AtomicLongFieldUpdater_2Ljava_lang_Class_2Ljava_lang_String_2".equals(mn)

  1795             && "java/util/concurrent/atomic/AtomicLongFieldUpdater".equals(mi[0])

  1796         )) {

  1797             if (vars[1] instanceof String) {

  1798                 String field = vars[1].toString();

  1799                 if (field.length() > 2 && field.charAt(0) == '"' && field.charAt(field.length() - 1) == '"') {

  1800                     vars[1] = "c._" + field.substring(1, field.length() - 1);

  1801                 }

  1802             }

  1803         }

  1804         if (

  1805             "newUpdater__Ljava_util_concurrent_atomic_AtomicReferenceFieldUpdater_2Ljava_lang_Class_2Ljava_lang_Class_2Ljava_lang_String_2".equals(mn)

  1806             && "java/util/concurrent/atomic/AtomicReferenceFieldUpdater".equals(mi[0])

  1807         ) {

  1808             if (vars[1] instanceof String) {

  1809                 String field = vars[2].toString();

  1810                 if (field.length() > 2 && field.charAt(0) == '"' && field.charAt(field.length() - 1) == '"') {

  1811                     vars[2] = "c._" + field.substring(1, field.length() - 1);

  1812                 }

  1813             }

  1814         }

  1816         if (returnType[0] != 'V') {

  1817             mapper.flush(this);

  1818             append("var ")

  1819                .append(mapper.pushT(VarType.fromFieldType(returnType[0])))

  1820                .append(" = ");

  1821         }

  1823         final String in = mi[0];

  1824         String mcn;

  1825         if (callbacks && (

  1826             in.equals("org/apidesign/html/boot/spi/Fn") ||

  1827             in.equals("org/netbeans/html/boot/spi/Fn")

  1828         )) {

  1829             mcn = "java_lang_Class";

  1830         } else if (DirectlLibraries.isScriptLibrary(in) && in.endsWith("/Exports")) {

  1831             append(mi[1]);

  1832             append('(');

  1833             mcn = null;

  1834         } else {

  1835             mcn = mangleClassName(in);

  1836         }

  1837         if (mcn != null) {

  1838             String object = accessClassFalse(mcn);

  1839             if (mn.startsWith("cons_")) {

  1840                 object += ".constructor";

  1841             }

  1842             append(accessStaticMethod(object, mn, mi));

  1843             if (isStatic) {

  1844                 append('(');

  1845             } else {

  1846                 append(".call(");

  1847             }

  1848             addReference(in);

  1849         }

  1850         if (numArguments > 0) {

  1851             append(vars[0]);

  1852             for (int j = 1; j < numArguments; ++j) {

  1853                 append(", ");

  1854                 append(vars[j]);

  1855             }

  1856         }

  1857         append(");");

  1858         i += 2;

  1859         return i;

  1860     }

  1861     private int invokeVirtualMethod(byte[] byteCodes, int i, final StackMapper mapper)

  1862     throws IOException {

  1863         int methodIndex = readUShortArg(byteCodes, i);

  1864         String[] mi = jc.getFieldInfoName(methodIndex);

  1865         char[] returnType = { 'V' };

  1866         StringBuilder cnt = new StringBuilder();

  1867         String mn = findMethodName(mi, cnt, returnType);

  1869         final int numArguments = cnt.length() + 1;

  1870         final CharSequence[] vars =  new CharSequence[numArguments];

  1872         for (int j = numArguments - 1; j >= 0; --j) {

  1873             vars[j] = mapper.popValue();

  1874         }

  1876         if (returnType[0] != 'V') {

  1877             mapper.flush(this);

  1878             append("var ")

  1879                .append(mapper.pushT(VarType.fromFieldType(returnType[0])))

  1880                .append(" = ");

  1881         }

  1883         i += 2;

  1884         if (DirectlLibraries.isScriptLibrary(mi[0])) {

  1885             if ("$get__Ljava_lang_Object_2Ljava_lang_String_2".equals(mn)) {

  1886                 append(vars[0].toString())

  1887                     .append('[')

  1888                     .append(vars[1])

  1889                     .append("];");

  1890                 return i;

  1891             }

  1892             if ("$set__VLjava_lang_String_2Ljava_lang_Object_2".equals(mn)) {

  1893                 append(vars[0].toString())

  1894                     .append('[')

  1895                     .append(vars[1])

  1896                     .append("] = ")

  1897                     .append(vars[2])

  1898                     .append(';');

  1899                 return i;

  1900             }

  1901         }

  1903         append(accessVirtualMethod(vars[0].toString(), mn, mi, numArguments));

  1904         String sep = "";

  1905         for (int j = 1; j < numArguments; ++j) {

  1906             append(sep);

  1907             append(vars[j]);

  1908             sep = ", ";

  1909         }

  1910         append(");");

  1911         return i;

  1912     }

  1914     private void addReference(String cn) throws IOException {

  1915         if (requireReference(cn)) {

  1916             debug(" /* needs " + cn + " */");

  1917         }

  1918     }

  1920     private void outType(String d, StringBuilder out) {

  1921         int arr = 0;

  1922         while (d.charAt(0) == '[') {

  1923             out.append('A');

  1924             d = d.substring(1);

  1925         }

  1926         if (d.charAt(0) == 'L') {

  1927             assert d.charAt(d.length() - 1) == ';';

  1928             out.append(mangleClassName(d).substring(0, d.length() - 1));

  1929         } else {

  1930             out.append(d);

  1931         }

  1932     }

  1934     private String encodeConstant(int entryIndex) throws IOException {

  1935         String[] classRef = { null };

  1936         String s = jc.stringValue(entryIndex, classRef);

  1937         if (classRef[0] != null) {

  1938             if (classRef[0].startsWith("[")) {

  1939                 s = accessClass("java_lang_Class") + "(false)['forName__Ljava_lang_Class_2Ljava_lang_String_2']('" + classRef[0] + "')";

  1940             } else {

  1941                 addReference(classRef[0]);

  1942                 s = accessClassFalse(mangleClassName(s)) + ".constructor.$class";

  1943             }

  1944         }

  1945         return s;

  1946     }

  1948     private String javaScriptBody(String destObject, MethodData m, boolean isStatic) throws IOException {

  1949         byte[] arr = m.findAnnotationData(true);

  1950         if (arr == null) {

  1951             return null;

  1952         }

  1953         final String jvmType = "Lorg/apidesign/bck2brwsr/core/JavaScriptBody;";

  1954         final String htmlType = "Lnet/java/html/js/JavaScriptBody;";

  1955         class P extends AnnotationParser {

  1956             public P() {

  1957                 super(false, true);

  1958             }

  1960             int cnt;

  1961             String[] args = new String[30];

  1962             String body;

  1963             boolean javacall;

  1964             boolean html4j;

  1966             @Override

  1967             protected void visitAttr(String type, String attr, String at, String value) {

  1968                 if (type.equals(jvmType)) {

  1969                     if ("body".equals(attr)) {

  1970                         body = value;

  1971                     } else if ("args".equals(attr)) {

  1972                         args[cnt++] = value;

  1973                     } else {

  1974                         throw new IllegalArgumentException(attr);

  1975                     }

  1976                 }

  1977                 if (type.equals(htmlType)) {

  1978                     html4j = true;

  1979                     if ("body".equals(attr)) {

  1980                         body = value;

  1981                     } else if ("args".equals(attr)) {

  1982                         args[cnt++] = value;

  1983                     } else if ("javacall".equals(attr)) {

  1984                         javacall = "1".equals(value);

  1985                     } else if ("wait4js".equals(attr)) {

  1986                         // ignore, we always invoke synchronously

  1987                     } else {

  1988                         throw new IllegalArgumentException(attr);

  1989                     }

  1990                 }

  1991             }

  1992         }

  1993         P p = new P();

  1994         p.parse(arr, jc);

  1995         if (p.body == null) {

  1996             return null;

  1997         }

  1998         StringBuilder cnt = new StringBuilder();

  1999         final String mn = findMethodName(m, cnt);

  2000         append("m = ").append(destObject).append(".").append(mn);

  2001         append(" = function(");

  2002         String space = "";

  2003         int index = 0;

  2004         StringBuilder toValue = new StringBuilder();

  2005         for (int i = 0; i < cnt.length(); i++) {

  2006             append(space);

  2007             space = outputArg(this, p.args, index);

  2008             if (p.html4j && space.length() > 0) {

  2009                 toValue.append("\n  ").append(p.args[index]).append(" = ")

  2010                     .append(accessClass("java_lang_Class")).append("(false).toJS(").

  2011                     append(p.args[index]).append(");");

  2012             }

  2013             index++;

  2014         }

  2015         append(") {").append("\n");

  2016         append(toValue.toString());

  2017         if (p.javacall) {

  2018             int lastSlash = jc.getClassName().lastIndexOf('/');

  2019             final String pkg = jc.getClassName().substring(0, lastSlash);

  2020             append(mangleCallbacks(pkg, p.body));

  2021             requireReference(pkg + "/$JsCallbacks$");

  2022         } else {

  2023             append(p.body);

  2024         }

  2025         append("\n}\n");

  2026         return mn;

  2027     }

  2029     private CharSequence mangleCallbacks(String pkgName, String body) {

  2030         StringBuilder sb = new StringBuilder();

  2031         int pos = 0;

  2032         for (;;) {

  2033             int next = body.indexOf(".@", pos);

  2034             if (next == -1) {

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

  2036                 body = sb.toString();

  2037                 break;

  2038             }

  2039             int ident = next;

  2040             while (ident > 0) {

  2041                 if (!Character.isJavaIdentifierPart(body.charAt(--ident))) {

  2042                     ident++;

  2043                     break;

  2044                 }

  2045             }

  2046             String refId = body.substring(ident, next);

  2048             sb.append(body.substring(pos, ident));

  2050             int sigBeg = body.indexOf('(', next);

  2051             int sigEnd = body.indexOf(')', sigBeg);

  2052             int colon4 = body.indexOf("::", next);

  2053             if (sigBeg == -1 || sigEnd == -1 || colon4 == -1) {

  2054                 throw new IllegalStateException("Malformed body " + body);

  2055             }

  2056             String fqn = body.substring(next + 2, colon4);

  2057             String method = body.substring(colon4 + 2, sigBeg);

  2058             String params = body.substring(sigBeg, sigEnd + 1);

  2060             int paramBeg = body.indexOf('(', sigEnd + 1);

  2061             int paramEnd = closingParenthesis(body, paramBeg);

  2063             sb.append(accessClass("java_lang_Class")).append("(false).toJS(");

  2064             sb.append("vm.").append(mangleClassName(pkgName)).append("_$JsCallbacks$(false)._VM().");

  2065             sb.append(mangleJsCallbacks(fqn, method, params, false));

  2066             sb.append("(").append(refId);

  2067             if (body.charAt(paramBeg + 1) != ')') {

  2068                 sb.append(",");

  2069             }

  2070             sb.append(body.substring(paramBeg + 1, paramEnd));

  2071             sb.append(")");

  2072             pos = paramEnd;

  2073         }

  2074         sb = null;

  2075         pos = 0;

  2076         for (;;) {

  2077             int next = body.indexOf("@", pos);

  2078             if (next == -1) {

  2079                 if (sb == null) {

  2080                     return body;

  2081                 }

  2082                 sb.append(body.substring(pos));

  2083                 return sb;

  2084             }

  2085             if (sb == null) {

  2086                 sb = new StringBuilder();

  2087             }

  2089             sb.append(body.substring(pos, next));

  2091             int sigBeg = body.indexOf('(', next);

  2092             int sigEnd = body.indexOf(')', sigBeg);

  2093             int colon4 = body.indexOf("::", next);

  2094             if (sigBeg == -1 || sigEnd == -1 || colon4 == -1) {

  2095                 throw new IllegalStateException("Malformed body " + body);

  2096             }

  2097             String fqn = body.substring(next + 1, colon4);

  2098             String method = body.substring(colon4 + 2, sigBeg);

  2099             String params = body.substring(sigBeg, sigEnd + 1);

  2101             int paramBeg = body.indexOf('(', sigEnd + 1);

  2102             int paramEnd = closingParenthesis(body, paramBeg);

  2104             sb.append(accessClass("java_lang_Class")).append("(false).toJS(");

  2105             sb.append("vm.").append(mangleClassName(pkgName)).append("_$JsCallbacks$(false)._VM().");

  2106             sb.append(mangleJsCallbacks(fqn, method, params, true));

  2107             sb.append("(");

  2108             sb.append(body.substring(paramBeg + 1, paramEnd));

  2109             sb.append(")");

  2110             pos = paramEnd;

  2111         }

  2112     }

  2114     static String mangleJsCallbacks(String fqn, String method, String params, boolean isStatic) {

  2115         if (params.startsWith("(")) {

  2116             params = params.substring(1);

  2117         }

  2118         if (params.endsWith(")")) {

  2119             params = params.substring(0, params.length() - 1);

  2120         }

  2121         StringBuilder sb = new StringBuilder();

  2122         final String fqnu = fqn.replace('.', '_');

  2123         final String rfqn = mangleClassName(fqnu);

  2124         final String rm = mangleMethodName(method);

  2125         final String srp;

  2126         {

  2127             StringBuilder pb = new StringBuilder();

  2128             int len = params.length();

  2129             int indx = 0;

  2130             while (indx < len) {

  2131                 char ch = params.charAt(indx);

  2132                 if (ch == '[' || ch == 'L') {

  2133                     int column = params.indexOf(';', indx) + 1;

  2134                     if (column > indx) {

  2135                         String real = params.substring(indx, column);

  2136                         if ("Ljava/lang/String;".equals(real)) {

  2137                             pb.append("Ljava/lang/String;");

  2138                             indx = column;

  2139                             continue;

  2140                         }

  2141                     }

  2142                     pb.append("Ljava/lang/Object;");

  2143                     indx = column;

  2144                 } else {

  2145                     pb.append(ch);

  2146                     indx++;

  2147                 }

  2148             }

  2149             srp = mangleSig(pb.toString());

  2150         }

  2151         final String rp = mangleSig(params);

  2152         final String mrp = mangleMethodName(rp);

  2153         sb.append(rfqn).append("$").append(rm).

  2154             append('$').append(mrp).append("__Ljava_lang_Object_2");

  2155         if (!isStatic) {

  2156             sb.append('L').append(fqnu).append("_2");

  2157         }

  2158         sb.append(srp);

  2159         return sb.toString();

  2160     }

  2162     private static String className(ClassData jc) {

  2163         //return jc.getName().getInternalName().replace('/', '_');

  2164         return mangleClassName(jc.getClassName());

  2165     }

  2167     private static String[] findAnnotation(

  2168         byte[] arr, ClassData cd, final String className,

  2169         final String... attrNames

  2170     ) throws IOException {

  2171         if (arr == null) {

  2172             return null;

  2173         }

  2174         final String[] values = new String[attrNames.length];

  2175         final boolean[] found = { false };

  2176         final String jvmType = "L" + className.replace('.', '/') + ";";

  2177         AnnotationParser ap = new AnnotationParser(false, true) {

  2178             @Override

  2179             protected void visitAttr(String type, String attr, String at, String value) {

  2180                 if (type.equals(jvmType)) {

  2181                     found[0] = true;

  2182                     for (int i = 0; i < attrNames.length; i++) {

  2183                         if (attrNames[i].equals(attr)) {

  2184                             values[i] = value;

  2185                         }

  2186                     }

  2187                 }

  2188             }

  2190         };

  2191         ap.parse(arr, cd);

  2192         return found[0] ? values : null;

  2193     }

  2195     private CharSequence initField(FieldData v) {

  2196         final String is = v.getInternalSig();

  2197         if (is.length() == 1) {

  2198             switch (is.charAt(0)) {

  2199                 case 'S':

  2200                 case 'J':

  2201                 case 'B':

  2202                 case 'Z':

  2203                 case 'C':

  2204                 case 'I': return " = 0;";

  2205                 case 'F':

  2206                 case 'D': return " = 0.0;";

  2207                 default:

  2208                     throw new IllegalStateException(is);

  2209             }

  2210         }

  2211         return " = null;";

  2212     }

  2214     private static String outputArg(Appendable out, String[] args, int indx) throws IOException {

  2215         final String name = args[indx];

  2216         if (name == null) {

  2217             return "";

  2218         }

  2219         if (name.contains(",")) {

  2220             throw new IOException("Wrong parameter with ',': " + name);

  2221         }

  2222         out.append(name);

  2223         return ",";

  2224     }

  2226     final void emitNoFlush(

  2227         StackMapper sm,

  2228         final String format, final CharSequence... params

  2229     ) throws IOException {

  2230         emitImpl(this, format, params);

  2231     }

  2232     static final void emit(

  2233         StackMapper sm,

  2234         final Appendable out,

  2235         final String format, final CharSequence... params

  2236     ) throws IOException {

  2237         sm.flush(out);

  2238         emitImpl(out, format, params);

  2239     }

  2240     static void emitImpl(final Appendable out,

  2241                              final String format,

  2242                              final CharSequence... params) throws IOException {

  2243         final int length = format.length();

  2245         int processed = 0;

  2246         int paramOffset = format.indexOf('@');

  2247         while ((paramOffset != -1) && (paramOffset < (length - 1))) {

  2248             final char paramChar = format.charAt(paramOffset + 1);

  2249             if ((paramChar >= '1') && (paramChar <= '9')) {

  2250                 final int paramIndex = paramChar - '0' - 1;

  2252                 out.append(format, processed, paramOffset);

  2253                 out.append(params[paramIndex]);

  2255                 ++paramOffset;

  2256                 processed = paramOffset + 1;

  2257             }

  2259             paramOffset = format.indexOf('@', paramOffset + 1);

  2260         }

  2262         out.append(format, processed, length);

  2263     }

  2265     private void generateCatch(TrapData[] traps, int current, int topMostLabel) throws IOException {

  2266         append("} catch (e) {\n");

  2267         int finallyPC = -1;

  2268         for (TrapData e : traps) {

  2269             if (e == null) {

  2270                 break;

  2271             }

  2272             if (e.catch_cpx != 0) { //not finally

  2273                 final String classInternalName = jc.getClassName(e.catch_cpx);

  2274                 addReference(classInternalName);

  2275                 append("e = vm.java_lang_Class(false).bck2BrwsrThrwrbl(e);");

  2276                 append("if (e['$instOf_" + mangleClassName(classInternalName) + "']) {");

  2277                 append("var stA0 = e;");

  2278                 goTo(this, current, e.handler_pc, topMostLabel);

  2279                 append("}\n");

  2280             } else {

  2281                 finallyPC = e.handler_pc;

  2282             }

  2283         }

  2284         if (finallyPC == -1) {

  2285             append("throw e;");

  2286         } else {

  2287             append("var stA0 = e;");

  2288             goTo(this, current, finallyPC, topMostLabel);

  2289         }

  2290         append("\n}");

  2291     }

  2293     private static void goTo(Appendable out, int current, int to, int canBack) throws IOException {

  2294         if (to < current) {

  2295             if (canBack < to) {

  2296                 out.append("{ gt = 0; continue X_" + to + "; }");

  2297             } else {

  2298                 out.append("{ gt = " + to + "; continue X_0; }");

  2299             }

  2300         } else {

  2301             out.append("{ gt = " + to + "; break IF; }");

  2302         }

  2303     }

  2305     private static void emitIf(

  2306         StackMapper sm,

  2307         Appendable out, String pattern,

  2308         CharSequence param,

  2309         int current, int to, int canBack

  2310     ) throws IOException {

  2311         sm.flush(out);

  2312         emitImpl(out, pattern, param);

  2313         goTo(out, current, to, canBack);

  2314     }

  2316     private void generateNewArray(int atype, final StackMapper smapper) throws IOException, IllegalStateException {

  2317         String jvmType;

  2318         switch (atype) {

  2319             case 4: jvmType = "[Z"; break;

  2320             case 5: jvmType = "[C"; break;

  2321             case 6: jvmType = "[F"; break;

  2322             case 7: jvmType = "[D"; break;

  2323             case 8: jvmType = "[B"; break;

  2324             case 9: jvmType = "[S"; break;

  2325             case 10: jvmType = "[I"; break;

  2326             case 11: jvmType = "[J"; break;

  2327             default: throw new IllegalStateException("Array type: " + atype);

  2328         }

  2329         emit(smapper, this,

  2330             "var @2 = Array.prototype['newArray__Ljava_lang_Object_2ZLjava_lang_String_2Ljava_lang_Object_2I'](true, '@3', null, @1);",

  2331              smapper.popI(), smapper.pushA(), jvmType);

  2332     }

  2334     private void generateANewArray(int type, final StackMapper smapper) throws IOException {

  2335         String typeName = jc.getClassName(type);

  2336         String ref = "null";

  2337         if (typeName.startsWith("[")) {

  2338             typeName = "'[" + typeName + "'";

  2339         } else {

  2340             ref = "vm." + mangleClassName(typeName);

  2341             typeName = "'[L" + typeName + ";'";

  2342         }

  2343         emit(smapper, this,

  2344             "var @2 = Array.prototype['newArray__Ljava_lang_Object_2ZLjava_lang_String_2Ljava_lang_Object_2I'](false, @3, @4, @1);",

  2345              smapper.popI(), smapper.pushA(), typeName, ref);

  2346     }

  2348     private int generateMultiANewArray(int type, final byte[] byteCodes, int i, final StackMapper smapper) throws IOException {

  2349         String typeName = jc.getClassName(type);

  2350         int dim = readUByte(byteCodes, ++i);

  2351         StringBuilder dims = new StringBuilder();

  2352         dims.append('[');

  2353         for (int d = 0; d < dim; d++) {

  2354             if (d != 0) {

  2355                 dims.insert(1, ",");

  2356             }

  2357             dims.insert(1, smapper.popI());

  2358         }

  2359         dims.append(']');

  2360         String fn = "null";

  2361         if (typeName.charAt(dim) == 'L') {

  2362             fn = "vm." + mangleClassName(typeName.substring(dim + 1, typeName.length() - 1));

  2363         }

  2364         emit(smapper, this,

  2365             "var @2 = Array.prototype['multiNewArray__Ljava_lang_Object_2Ljava_lang_String_2_3ILjava_lang_Object_2']('@3', @1, @4);",

  2366              dims.toString(), smapper.pushA(), typeName, fn

  2367         );

  2368         return i;

  2369     }

  2371     private int generateTableSwitch(int i, final byte[] byteCodes, final StackMapper smapper, int topMostLabel) throws IOException {

  2372         int table = i / 4 * 4 + 4;

  2373         int dflt = i + readInt4(byteCodes, table);

  2374         table += 4;

  2375         int low = readInt4(byteCodes, table);

  2376         table += 4;

  2377         int high = readInt4(byteCodes, table);

  2378         table += 4;

  2379         final CharSequence swVar = smapper.popValue();

  2380         smapper.flush(this);

  2381         append("switch (").append(swVar).append(") {\n");

  2382         while (low <= high) {

  2383             int offset = i + readInt4(byteCodes, table);

  2384             table += 4;

  2385             append("  case " + low).append(":"); goTo(this, i, offset, topMostLabel); append('\n');

  2386             low++;

  2387         }

  2388         append("  default: ");

  2389         goTo(this, i, dflt, topMostLabel);

  2390         append("\n}");

  2391         i = table - 1;

  2392         return i;

  2393     }

  2395     private int generateLookupSwitch(int i, final byte[] byteCodes, final StackMapper smapper, int topMostLabel) throws IOException {

  2396         int table = i / 4 * 4 + 4;

  2397         int dflt = i + readInt4(byteCodes, table);

  2398         table += 4;

  2399         int n = readInt4(byteCodes, table);

  2400         table += 4;

  2401         final CharSequence swVar = smapper.popValue();

  2402         smapper.flush(this);

  2403         append("switch (").append(swVar).append(") {\n");

  2404         while (n-- > 0) {

  2405             int cnstnt = readInt4(byteCodes, table);

  2406             table += 4;

  2407             int offset = i + readInt4(byteCodes, table);

  2408             table += 4;

  2409             append("  case " + cnstnt).append(": "); goTo(this, i, offset, topMostLabel); append('\n');

  2410         }

  2411         append("  default: ");

  2412         goTo(this, i, dflt, topMostLabel);

  2413         append("\n}");

  2414         i = table - 1;

  2415         return i;

  2416     }

  2418     private void generateInstanceOf(int indx, final StackMapper smapper) throws IOException {

  2419         String type = jc.getClassName(indx);

  2420         if (DirectlLibraries.isScriptLibrary(type)) {

  2421             emit(smapper, this,

  2422                     "var @2 = @1 !== null && @1 !== undefined;",

  2423                  smapper.popA(), smapper.pushI(),

  2424                  mangleClassName(type));

  2425             return;

  2426         }

  2427         if (!type.startsWith("[")) {

  2428             emit(smapper, this,

  2429                     "var @2 = @1 != null && @1['$instOf_@3'] ? 1 : 0;",

  2430                  smapper.popA(), smapper.pushI(),

  2431                  mangleClassName(type));

  2432         } else {

  2433             int cnt = 0;

  2434             while (type.charAt(cnt) == '[') {

  2435                 cnt++;

  2436             }

  2437             if (type.charAt(cnt) == 'L') {

  2438                 String component = type.substring(cnt + 1, type.length() - 1);

  2439                 requireReference(component);

  2440                 type = "vm." + mangleClassName(component);

  2441                 emit(smapper, this,

  2442                     "var @2 = Array.prototype['isInstance__ZLjava_lang_Object_2ILjava_lang_Object_2'](@1, @4, @3);",

  2443                     smapper.popA(), smapper.pushI(),

  2444                     type, "" + cnt

  2445                 );

  2446             } else {

  2447                 emit(smapper, this,

  2448                     "var @2 = Array.prototype['isInstance__ZLjava_lang_Object_2Ljava_lang_String_2'](@1, '@3');",

  2449                     smapper.popA(), smapper.pushI(), type

  2450                 );

  2451             }

  2452         }

  2453     }

  2455     private void generateCheckcast(int indx, final StackMapper smapper) throws IOException {

  2456         String type = jc.getClassName(indx);

  2457         if (DirectlLibraries.isScriptLibrary(type)) {

  2458             emitNoFlush(smapper,

  2459                  "",

  2460                  smapper.getT(0, VarType.REFERENCE, false), mangleClassName(type), type.replace('/', '.'));

  2461             return;

  2462         }

  2463         if (!type.startsWith("[")) {

  2464             emitNoFlush(smapper,

  2465                  "if (@1 !== null && !@1['$instOf_@2']) vm.java_lang_Class(false).castEx(@1, '@3');",

  2466                  smapper.getT(0, VarType.REFERENCE, false), mangleClassName(type), type.replace('/', '.'));

  2467         } else {

  2468             int cnt = 0;

  2469             while (type.charAt(cnt) == '[') {

  2470                 cnt++;

  2471             }

  2472             if (type.charAt(cnt) == 'L') {

  2473                 String component = type.substring(cnt + 1, type.length() - 1);

  2474                 requireReference(component);

  2475                 type = "vm." + mangleClassName(component);

  2476                 emitNoFlush(smapper,

  2477                     "if (@1 !== null && !Array.prototype['isInstance__ZLjava_lang_Object_2ILjava_lang_Object_2'](@1, @3, @2)) vm.java_lang_Class(false).castEx(@1, '');",

  2478                      smapper.getT(0, VarType.REFERENCE, false), type, "" + cnt

  2479                 );

  2480             } else {

  2481                 emitNoFlush(smapper,

  2482                     "if (@1 !== null && !Array.prototype['isInstance__ZLjava_lang_Object_2Ljava_lang_String_2'](@1, '@2')) vm.java_lang_Class(false).castEx(@1, '');",

  2483                      smapper.getT(0, VarType.REFERENCE, false), type

  2484                 );

  2485             }

  2486         }

  2487     }

  2489     private void generateByteCodeComment(int prev, int i, final byte[] byteCodes) throws IOException {

  2490         for (int j = prev; j <= i; j++) {

  2491             append(" ");

  2492             final int cc = readUByte(byteCodes, j);

  2493             append(Integer.toString(cc));

  2494         }

  2495     }

  2497     @JavaScriptBody(args = "msg", body = "")

  2498     private static void println(String msg) {

  2499         System.err.println(msg);

  2500     }

  2502     private static int closingParenthesis(String body, int at) {

  2503         int cnt = 0;

  2504         for (;;) {

  2505             switch (body.charAt(at++)) {

  2506                 case '(': cnt++; break;

  2507                 case ')': cnt--; break;

  2508             }

  2509             if (cnt == 0) {

  2510                 return at;

  2511             }

  2512         }

  2513     }

  2515     private class GenerateAnno extends AnnotationParser {

  2516         public GenerateAnno(boolean textual, boolean iterateArray) {

  2517             super(textual, iterateArray);

  2518         }

  2519         int[] cnt = new int[32];

  2520         int depth;

  2522         @Override

  2523         protected void visitAnnotationStart(String attrType, boolean top) throws IOException {

  2524             final String slashType = attrType.substring(1, attrType.length() - 1);

  2525             requireReference(slashType);

  2527             if (cnt[depth]++ > 0) {

  2528                 append(",");

  2529             }

  2530             if (top) {

  2531                 append('"').append(attrType).append("\" : ");

  2532             }

  2533             append("{\n");

  2534             cnt[++depth] = 0;

  2535         }

  2537         @Override

  2538         protected void visitAnnotationEnd(String type, boolean top) throws IOException {

  2539             append("\n}\n");

  2540             depth--;

  2541         }

  2543         @Override

  2544         protected void visitValueStart(String attrName, char type) throws IOException {

  2545             if (cnt[depth]++ > 0) {

  2546                 append(",\n");

  2547             }

  2548             cnt[++depth] = 0;

  2549             if (attrName != null) {

  2550                 append('"').append(attrName).append("\" : ");

  2551             }

  2552             if (type == '[') {

  2553                 append("[");

  2554             }

  2555         }

  2557         @Override

  2558         protected void visitValueEnd(String attrName, char type) throws IOException {

  2559             if (type == '[') {

  2560                 append("]");

  2561             }

  2562             depth--;

  2563         }

  2565         @Override

  2566         protected void visitAttr(String type, String attr, String attrType, String value)

  2567             throws IOException {

  2568             if (attr == null && value == null) {

  2569                 return;

  2570             }

  2571             append(value);

  2572         }

  2574         @Override

  2575         protected void visitEnumAttr(String type, String attr, String attrType, String value)

  2576             throws IOException {

  2577             final String slashType = attrType.substring(1, attrType.length() - 1);

  2578             requireReference(slashType);

  2580             final String cn = mangleClassName(slashType);

  2581             append(accessClassFalse(cn))

  2582                 .append("['valueOf__L").

  2583                 append(cn).

  2584                 append("_2Ljava_lang_String_2']('").

  2585                 append(value).

  2586                 append("')");

  2587         }

  2589         @Override

  2590         protected void visitClassAttr(String annoType, String attr, String className) throws IOException {

  2591             final String slashType = className.substring(1, className.length() - 1);

  2592             requireReference(slashType);

  2594             final String cn = mangleClassName(slashType);

  2595             append(accessClassFalse(cn)).append(".constructor.$class");

  2596         }

  2597     }

  2598 }

author	Jaroslav Tulach <jaroslav.tulach@apidesign.org>
	Fri, 10 Jun 2016 05:52:44 +0200
branch	Libraries
changeset 1971	de609e0cdab5
parent 1969	51183f00d2df
child 1972	a83ae75ebf89
permissions	-rw-r--r--