hg/bck2brwsr: rt/vm/src/main/java/org/apidesign/vm4brwsr/ByteCodeToJavaScript.java@65c6f805797f

     1 /**

     2  * Back 2 Browser Bytecode Translator

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

     4  *

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

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

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

     8  *

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

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

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

    12  * GNU General Public License for more details.

    13  *

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

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

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

    17  */

    18 package org.apidesign.vm4brwsr;

    20 import java.io.IOException;

    21 import java.io.InputStream;

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

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

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

    26  *

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

    28  */

    29 abstract class ByteCodeToJavaScript implements Appendable {

    30     private ClassData jc;

    31     private final Appendable out;

    32     private boolean outChanged;

    33     private boolean callbacks;

    35     protected ByteCodeToJavaScript(Appendable out) {

    36         this.out = out;

    37     }

    39     @Override

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

    41         out.append(csq);

    42         outChanged = true;

    43         return this;

    44     }

    46     @Override

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

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

    49         outChanged = true;

    50         return this;

    51     }

    53     @Override

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

    55         out.append(c);

    56         outChanged = true;

    57         return this;

    58     }

    60     /* Collects additional required resources.

    61      *

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

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

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

    65      */

    66     protected abstract boolean requireReference(String internalClassName);

    68     /*

    69      * @param resourcePath name of resources to read

    70      */

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

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

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

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

    76      *

    77      * @param className suggested name of the class

    78      */

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

    80         return className + " = ";

    81     }

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

    83         return classOperation;

    84     }

    86     protected String accessField(String object, String mangledName,

    87                                  String[] fieldInfoName) throws IOException {

    88         return object + "." + mangledName;

    89     }

    91     protected String accessStaticMethod(

    92                              String object,

    93                              String mangledName,

    94                              String[] fieldInfoName) throws IOException {

    95         return object + "." + mangledName;

    96     }

    98     protected String accessVirtualMethod(

    99             String object,

   100             String mangledName,

   101             String[] fieldInfoName,

   102             int params

   103     ) throws IOException {

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

   105     }

   107     protected void declaredClass(ClassData classData, String mangledName)

   108             throws IOException {

   109     }

   111     protected void declaredField(FieldData fieldData,

   112                                  String destObject,

   113                                  String mangledName) throws IOException {

   114     }

   116     protected void declaredMethod(MethodData methodData,

   117                                   String destObject,

   118                                   String mangledName) throws IOException {

   119     }

   121     /** Prints out a debug message.

   122      *

   123      * @param msg the message

   124      * @return true if the message has been printed

   125      * @throws IOException

   126      */

   127     boolean debug(String msg) throws IOException {

   128         append(msg);

   129         return true;

   130     }

   132     /**

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

   134      *

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

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

   137      *

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

   139      */

   141     public String compile(InputStream classFile) throws IOException {

   142         return compile(new ClassData(classFile));

   143     }

   145     protected String compile(ClassData classData) throws IOException {

   146         this.jc = classData;

   147         this.callbacks = this.jc.getClassName().endsWith("/$JsCallbacks$");

   148         if (jc.getMajor_version() < 50) {

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

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

   151             );

   152         }

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

   154         {

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

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

   157                 "resource", "processByteCode"

   158             );

   159             if (arr != null) {

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

   161                     requireScript(arr[0]);

   162                 }

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

   164                     return null;

   165                 }

   166             }

   167         }

   168         {

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

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

   171                 "value"

   172             );

   173             if (arr != null) {

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

   175                     requireScript(arr[0]);

   176                 } else {

   177                     int last = jc.getClassName().lastIndexOf('/');

   178                     requireScript(

   179                         jc.getClassName().substring(0, last + 1).replace('.', '/') + arr[0]

   180                     );

   181                 }

   182             }

   183         }

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

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

   186             "container", "prototype"

   187         );

   188         StringArray toInitilize = new StringArray();

   189         final String className = className(jc);

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

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

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

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

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

   195         if (proto == null) {

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

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

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

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

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

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

   202         } else {

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

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

   205                 proto[0] = "p";

   206             }

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

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

   209         }

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

   211             if (v.isStatic()) {

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

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

   214                         continue;

   215                     }

   216                 }

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

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

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

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

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

   222             } else {

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

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

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

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

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

   228                    .append("; };");

   229             }

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

   232         }

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

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

   235             if (javaScriptOnly(onlyArr)) continue;

   236             String destObject;

   237             String mn;

   238             append("\n    ");

   239             if (m.isStatic()) {

   240                 destObject = "c";

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

   242             } else {

   243                 if (m.isConstructor()) {

   244                     destObject = "CLS";

   245                     mn = generateInstanceMethod(destObject, m);

   246                 } else {

   247                     destObject = "c";

   248                     mn = generateInstanceMethod(destObject, m);

   249                 }

   250             }

   251             declaredMethod(m, destObject, mn);

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

   253             if (runAnno != null) {

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

   255                 generateAnno(jc, runAnno);

   256                 append("\n    };");

   257             }

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

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

   260         }

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

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

   263         String instOfName = "$instOf_" + className;

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

   265         if (jc.isInterface()) {

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

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

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

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

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

   271                     append("\n        try {");

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

   273                     append("\n        } catch (ignore) {");

   274                     append("\n        }");

   275                 }

   276             }

   277         }

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

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

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

   281             requireReference(superInterface);

   282         }

   283         append("\n    }");

   284         append("\n    try {");

   285         append("\n      Object.defineProperty(c, 'fillInstOf', { value: ").append(className).append("fillInstOf });");

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

   287         append("\n    } catch (ignore) {");

   288         append("\n    }");

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

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

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

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

   293         append("\n    CLS.$class.jvmName = '").append(jc.getClassName()).append("';");

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

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

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

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

   298         if (classAnno != null) {

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

   300             generateAnno(jc, classAnno);

   301             append("\n    };");

   302         }

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

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

   305         }

   306         append("\n  }");

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

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

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

   310         append("\n    }");

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

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

   313             if (javaScriptOnly(onlyArr)) continue;

   314             if (!v.isStatic()) {

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

   316                     append(className).append('_').

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

   318             }

   319         }

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

   321         append("\n  }");

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

   323         append("\n};");

   325         declaredClass(jc, className);

   327 //        StringBuilder sb = new StringBuilder();

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

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

   330 //        }

   331         return "";

   332     }

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

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

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

   337             "name", "value"

   338         );

   339         if (only != null) {

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

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

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

   343             }

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

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

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

   347             }

   348             return true;

   349         }

   350         return false;

   351     }

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

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

   354         if (jsb != null) {

   355             return jsb;

   356         }

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

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

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

   360             if (defineProp) {

   361                 toInitilize.add(accessClass(className(jc)) + "(false)['" + mn + "']");

   362             } else {

   363                 toInitilize.add(accessClass(className(jc)) + "(false)." + mn);

   364             }

   365         }

   366         return mn;

   367     }

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

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

   371         if (jsb != null) {

   372             return jsb;

   373         }

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

   375         generateMethod(destObject, mn, m);

   376         return mn;

   377     }

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

   380             throws IOException {

   381         final StackMapIterator stackMapIterator = m.createStackMapIterator();

   382         TrapDataIterator trap = m.getTrapDataIterator();

   383         final LocalsMapper lmapper =

   384                 new LocalsMapper(stackMapIterator.getArguments());

   386         boolean defineProp =

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

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

   390         if (defineProp) {

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

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

   393         } else {

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

   395         }

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

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

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

   400         if (byteCodes == null) {

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

   402                .append(jc.getClassName()).append('.')

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

   404             if (defineProp) {

   405                 append("}});");

   406             } else {

   407                 append("};");

   408             }

   409             return defineProp;

   410         }

   412         final StackMapper smapper = new StackMapper();

   414         if (!m.isStatic()) {

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

   416         }

   418         int lastStackFrame;

   419         TrapData[] previousTrap = null;

   420         boolean wide = false;

   421         boolean didBranches;

   422         if (stackMapIterator.isEmpty()) {

   423             didBranches = false;

   424             lastStackFrame = 0;

   425         } else {

   426             didBranches = true;

   427             lastStackFrame = -1;

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

   429         }

   431         int openBraces = 0;

   432         int topMostLabel = 0;

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

   434             int prev = i;

   435             outChanged = false;

   436             stackMapIterator.advanceTo(i);

   437             boolean changeInCatch = trap.advanceTo(i);

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

   439                 if (previousTrap != null) {

   440                     generateCatch(previousTrap, i, topMostLabel);

   441                     previousTrap = null;

   442                 }

   443             }

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

   445                 smapper.flush(this);

   446                 if (i != 0) {

   447                     append("    }\n");

   448                 }

   449                 if (openBraces > 64) {

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

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

   452                     }

   453                     openBraces = 1;

   454                     topMostLabel = i;

   455                 }

   457                 lastStackFrame = stackMapIterator.getFrameIndex();

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

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

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

   461                 openBraces++;

   462                 changeInCatch = true;

   463             } else {

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

   465             }

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

   467                 append("try {");

   468                 previousTrap = trap.current();

   469             }

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

   471             switch (c) {

   472                 case opc_aload_0:

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

   474                     break;

   475                 case opc_iload_0:

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

   477                     break;

   478                 case opc_lload_0:

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

   480                     break;

   481                 case opc_fload_0:

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

   483                     break;

   484                 case opc_dload_0:

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

   486                     break;

   487                 case opc_aload_1:

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

   489                     break;

   490                 case opc_iload_1:

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

   492                     break;

   493                 case opc_lload_1:

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

   495                     break;

   496                 case opc_fload_1:

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

   498                     break;

   499                 case opc_dload_1:

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

   501                     break;

   502                 case opc_aload_2:

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

   504                     break;

   505                 case opc_iload_2:

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

   507                     break;

   508                 case opc_lload_2:

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

   510                     break;

   511                 case opc_fload_2:

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

   513                     break;

   514                 case opc_dload_2:

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

   516                     break;

   517                 case opc_aload_3:

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

   519                     break;

   520                 case opc_iload_3:

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

   522                     break;

   523                 case opc_lload_3:

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

   525                     break;

   526                 case opc_fload_3:

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

   528                     break;

   529                 case opc_dload_3:

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

   531                     break;

   532                 case opc_iload: {

   533                     ++i;

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

   535                                           : readUByte(byteCodes, i);

   536                     wide = false;

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

   538                     break;

   539                 }

   540                 case opc_lload: {

   541                     ++i;

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

   543                                           : readUByte(byteCodes, i);

   544                     wide = false;

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

   546                     break;

   547                 }

   548                 case opc_fload: {

   549                     ++i;

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

   551                                           : readUByte(byteCodes, i);

   552                     wide = false;

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

   554                     break;

   555                 }

   556                 case opc_dload: {

   557                     ++i;

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

   559                                           : readUByte(byteCodes, i);

   560                     wide = false;

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

   562                     break;

   563                 }

   564                 case opc_aload: {

   565                     ++i;

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

   567                                           : readUByte(byteCodes, i);

   568                     wide = false;

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

   570                     break;

   571                 }

   572                 case opc_istore: {

   573                     ++i;

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

   575                                           : readUByte(byteCodes, i);

   576                     wide = false;

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

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

   579                     break;

   580                 }

   581                 case opc_lstore: {

   582                     ++i;

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

   584                                           : readUByte(byteCodes, i);

   585                     wide = false;

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

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

   588                     break;

   589                 }

   590                 case opc_fstore: {

   591                     ++i;

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

   593                                           : readUByte(byteCodes, i);

   594                     wide = false;

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

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

   597                     break;

   598                 }

   599                 case opc_dstore: {

   600                     ++i;

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

   602                                           : readUByte(byteCodes, i);

   603                     wide = false;

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

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

   606                     break;

   607                 }

   608                 case opc_astore: {

   609                     ++i;

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

   611                                           : readUByte(byteCodes, i);

   612                     wide = false;

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

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

   615                     break;

   616                 }

   617                 case opc_astore_0:

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

   619                     break;

   620                 case opc_istore_0:

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

   622                     break;

   623                 case opc_lstore_0:

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

   625                     break;

   626                 case opc_fstore_0:

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

   628                     break;

   629                 case opc_dstore_0:

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

   631                     break;

   632                 case opc_astore_1:

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

   634                     break;

   635                 case opc_istore_1:

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

   637                     break;

   638                 case opc_lstore_1:

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

   640                     break;

   641                 case opc_fstore_1:

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

   643                     break;

   644                 case opc_dstore_1:

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

   646                     break;

   647                 case opc_astore_2:

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

   649                     break;

   650                 case opc_istore_2:

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

   652                     break;

   653                 case opc_lstore_2:

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

   655                     break;

   656                 case opc_fstore_2:

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

   658                     break;

   659                 case opc_dstore_2:

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

   661                     break;

   662                 case opc_astore_3:

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

   664                     break;

   665                 case opc_istore_3:

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

   667                     break;

   668                 case opc_lstore_3:

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

   670                     break;

   671                 case opc_fstore_3:

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

   673                     break;

   674                 case opc_dstore_3:

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

   676                     break;

   677                 case opc_iadd:

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

   679                     break;

   680                 case opc_ladd:

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

   682                     break;

   683                 case opc_fadd:

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

   685                     break;

   686                 case opc_dadd:

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

   688                     break;

   689                 case opc_isub:

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

   691                     break;

   692                 case opc_lsub:

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

   694                     break;

   695                 case opc_fsub:

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

   697                     break;

   698                 case opc_dsub:

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

   700                     break;

   701                 case opc_imul:

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

   703                     break;

   704                 case opc_lmul:

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

   706                     break;

   707                 case opc_fmul:

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

   709                     break;

   710                 case opc_dmul:

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

   712                     break;

   713                 case opc_idiv:

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

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

   716                     break;

   717                 case opc_ldiv:

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

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

   720                     break;

   721                 case opc_fdiv:

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

   723                     break;

   724                 case opc_ddiv:

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

   726                     break;

   727                 case opc_irem:

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

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

   730                     break;

   731                 case opc_lrem:

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

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

   734                     break;

   735                 case opc_frem:

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

   737                     break;

   738                 case opc_drem:

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

   740                     break;

   741                 case opc_iand:

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

   743                     break;

   744                 case opc_land:

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

   746                     break;

   747                 case opc_ior:

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

   749                     break;

   750                 case opc_lor:

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

   752                     break;

   753                 case opc_ixor:

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

   755                     break;

   756                 case opc_lxor:

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

   758                     break;

   759                 case opc_ineg:

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

   761                     break;

   762                 case opc_lneg:

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

   764                     break;

   765                 case opc_fneg:

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

   767                     break;

   768                 case opc_dneg:

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

   770                     break;

   771                 case opc_ishl:

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

   773                     break;

   774                 case opc_lshl:

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

   776                     break;

   777                 case opc_ishr:

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

   779                     break;

   780                 case opc_lshr:

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

   782                     break;

   783                 case opc_iushr:

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

   785                     break;

   786                 case opc_lushr:

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

   788                     break;

   789                 case opc_iinc: {

   790                     ++i;

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

   792                                              : readUByte(byteCodes, i);

   793                     ++i;

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

   795                                             : byteCodes[i];

   796                     wide = false;

   797                     if (incrBy == 1) {

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

   799                     } else {

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

   801                              lmapper.getI(varIndx),

   802                              Integer.toString(incrBy));

   803                     }

   804                     break;

   805                 }

   806                 case opc_return:

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

   808                     break;

   809                 case opc_ireturn:

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

   811                     break;

   812                 case opc_lreturn:

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

   814                     break;

   815                 case opc_freturn:

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

   817                     break;

   818                 case opc_dreturn:

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

   820                     break;

   821                 case opc_areturn:

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

   823                     break;

   824                 case opc_i2l:

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

   826                     break;

   827                 case opc_i2f:

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

   829                     break;

   830                 case opc_i2d:

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

   832                     break;

   833                 case opc_l2i:

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

   835                     break;

   836                     // max int check?

   837                 case opc_l2f:

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

   839                     break;

   840                 case opc_l2d:

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

   842                     break;

   843                 case opc_f2d:

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

   845                          smapper.getF(0));

   846                     break;

   847                 case opc_d2f:

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

   849                          smapper.getD(0));

   850                     break;

   851                 case opc_f2i:

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

   853                          smapper.getF(0));

   854                     break;

   855                 case opc_f2l:

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

   857                          smapper.getF(0));

   858                     break;

   859                 case opc_d2i:

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

   861                          smapper.getD(0));

   862                     break;

   863                 case opc_d2l:

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

   865                     break;

   866                 case opc_i2b:

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

   868                     break;

   869                 case opc_i2c:

   870                 case opc_i2s:

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

   872                     break;

   873                 case opc_aconst_null:

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

   875                     break;

   876                 case opc_iconst_m1:

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

   878                     break;

   879                 case opc_iconst_0:

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

   881                     break;

   882                 case opc_dconst_0:

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

   884                     break;

   885                 case opc_lconst_0:

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

   887                     break;

   888                 case opc_fconst_0:

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

   890                     break;

   891                 case opc_iconst_1:

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

   893                     break;

   894                 case opc_lconst_1:

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

   896                     break;

   897                 case opc_fconst_1:

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

   899                     break;

   900                 case opc_dconst_1:

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

   902                     break;

   903                 case opc_iconst_2:

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

   905                     break;

   906                 case opc_fconst_2:

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

   908                     break;

   909                 case opc_iconst_3:

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

   911                     break;

   912                 case opc_iconst_4:

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

   914                     break;

   915                 case opc_iconst_5:

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

   917                     break;

   918                 case opc_ldc: {

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

   920                     String v = encodeConstant(indx);

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

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

   923                     break;

   924                 }

   925                 case opc_ldc_w:

   926                 case opc_ldc2_w: {

   927                     int indx = readUShortArg(byteCodes, i);

   928                     i += 2;

   929                     String v = encodeConstant(indx);

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

   931                     if (type == VarType.LONG) {

   932                         final Long lv = new Long(v);

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

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

   935                         if (hi == 0) {

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

   937                         } else {

   938                             smapper.assign(this, VarType.LONG,

   939                                 "0x" + Integer.toHexString(hi) + ".next32(0x" +

   940                                     Integer.toHexString(low) + ")"

   941                             );

   942                         }

   943                     } else {

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

   945                     }

   946                     break;

   947                 }

   948                 case opc_lcmp:

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

   950                     break;

   951                 case opc_fcmpl:

   952                 case opc_fcmpg:

   953                     smapper.replace(this, VarType.INTEGER, "(@2).compare(@1)", smapper.popF(), smapper.getF(0));

   954                     break;

   955                 case opc_dcmpl:

   956                 case opc_dcmpg:

   957                     smapper.replace(this, VarType.INTEGER, "(@2).compare(@1)", smapper.popD(), smapper.getD(0));

   958                     break;

   959                 case opc_if_acmpeq:

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

   961                                    "===", topMostLabel);

   962                     break;

   963                 case opc_if_acmpne:

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

   965                                    "!==", topMostLabel);

   966                     break;

   967                 case opc_if_icmpeq:

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

   969                                    "==", topMostLabel);

   970                     break;

   971                 case opc_ifeq: {

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

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

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

   975                     i += 2;

   976                     break;

   977                 }

   978                 case opc_ifne: {

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

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

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

   982                     i += 2;

   983                     break;

   984                 }

   985                 case opc_iflt: {

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

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

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

   989                     i += 2;

   990                     break;

   991                 }

   992                 case opc_ifle: {

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

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

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

   996                     i += 2;

   997                     break;

   998                 }

   999                 case opc_ifgt: {

  1000                     int indx = i + readShortArg(byteCodes, i);

  1001                     emitIf(smapper, this, "if ((@1) > 0) ",

  1002                          smapper.popI(), i, indx, topMostLabel);

  1003                     i += 2;

  1004                     break;

  1005                 }

  1006                 case opc_ifge: {

  1007                     int indx = i + readShortArg(byteCodes, i);

  1008                     emitIf(smapper, this, "if ((@1) >= 0) ",

  1009                          smapper.popI(), i, indx, topMostLabel);

  1010                     i += 2;

  1011                     break;

  1012                 }

  1013                 case opc_ifnonnull: {

  1014                     int indx = i + readShortArg(byteCodes, i);

  1015                     emitIf(smapper, this, "if ((@1) !== null) ",

  1016                          smapper.popA(), i, indx, topMostLabel);

  1017                     i += 2;

  1018                     break;

  1019                 }

  1020                 case opc_ifnull: {

  1021                     int indx = i + readShortArg(byteCodes, i);

  1022                     emitIf(smapper, this, "if ((@1) === null) ",

  1023                          smapper.popA(), i, indx, topMostLabel);

  1024                     i += 2;

  1025                     break;

  1026                 }

  1027                 case opc_if_icmpne:

  1028                     i = generateIf(smapper, byteCodes, i, smapper.popI(), smapper.popI(),

  1029                                    "!=", topMostLabel);

  1030                     break;

  1031                 case opc_if_icmplt:

  1032                     i = generateIf(smapper, byteCodes, i, smapper.popI(), smapper.popI(),

  1033                                    "<", topMostLabel);

  1034                     break;

  1035                 case opc_if_icmple:

  1036                     i = generateIf(smapper, byteCodes, i, smapper.popI(), smapper.popI(),

  1037                                    "<=", topMostLabel);

  1038                     break;

  1039                 case opc_if_icmpgt:

  1040                     i = generateIf(smapper, byteCodes, i, smapper.popI(), smapper.popI(),

  1041                                    ">", topMostLabel);

  1042                     break;

  1043                 case opc_if_icmpge:

  1044                     i = generateIf(smapper, byteCodes, i, smapper.popI(), smapper.popI(),

  1045                                    ">=", topMostLabel);

  1046                     break;

  1047                 case opc_goto: {

  1048                     smapper.flush(this);

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

  1050                     goTo(this, i, indx, topMostLabel);

  1051                     i += 2;

  1052                     break;

  1053                 }

  1054                 case opc_lookupswitch: {

  1055                     i = generateLookupSwitch(i, byteCodes, smapper, topMostLabel);

  1056                     break;

  1057                 }

  1058                 case opc_tableswitch: {

  1059                     i = generateTableSwitch(i, byteCodes, smapper, topMostLabel);

  1060                     break;

  1061                 }

  1062                 case opc_invokeinterface: {

  1063                     i = invokeVirtualMethod(byteCodes, i, smapper) + 2;

  1064                     break;

  1065                 }

  1066                 case opc_invokevirtual:

  1067                     i = invokeVirtualMethod(byteCodes, i, smapper);

  1068                     break;

  1069                 case opc_invokespecial:

  1070                     i = invokeStaticMethod(byteCodes, i, smapper, false);

  1071                     break;

  1072                 case opc_invokestatic:

  1073                     i = invokeStaticMethod(byteCodes, i, smapper, true);

  1074                     break;

  1075                 case opc_invokedynamic: {

  1076                     int indx = readUShortArg(byteCodes, i);

  1077                     println("invoke dynamic: " + indx);

  1078                     ByteCodeParser.CPX2 c2 = jc.getCpoolEntry(indx);

  1079                     BootMethodData bm = jc.getBootMethod(c2.cpx1);

  1080                     CPX2 methodHandle = jc.getCpoolEntry(bm.method);

  1081                     println("  type: " + methodHandle.cpx1);

  1082                     String[] mi = jc.getFieldInfoName(methodHandle.cpx2);

  1083                     String mcn = mangleClassName(mi[0]);

  1084                     char[] returnType = {'V'};

  1085                     StringBuilder cnt = new StringBuilder();

  1086                     String mn = findMethodName(mi, cnt, returnType);

  1087                     StringBuilder sb = new StringBuilder();

  1088                     sb.append("We don't handle invokedynamic, need to preprocess ahead-of-time:\n");

  1089                     sb.append("  mi[0]: ").append(mi[0]).append("\n");

  1090                     sb.append("  mi[1]: ").append(mi[1]).append("\n");

  1091                     sb.append("  mi[2]: ").append(mi[2]).append("\n");

  1092                     sb.append("  mn   : ").append(mn).append("\n");

  1093                     sb.append("  name and type: ").append(jc.stringValue(c2.cpx2, true)).append("\n");

  1094                     throw new IOException(sb.toString());

  1095                     /*

  1096                     CPX2 nameAndType = jc.getCpoolEntry(c2.cpx2);

  1097                     String type = jc.StringValue(nameAndType.cpx2);

  1098                     String object = accessClass(mcn) + "(false)";

  1099                     if (mn.startsWith("cons_")) {

  1100                         object += ".constructor";

  1101                     }

  1102                     append("var metHan = ");

  1103                     append(accessStaticMethod(object, mn, mi));

  1104                     append('(');

  1105                     String lookup = accessClass("java_lang_invoke_MethodHandles") + "(false).findFor__Ljava_lang_invoke_MethodHandles$Lookup_2Ljava_lang_Class_2(CLS.$class)";

  1106                     append(lookup);

  1107                     append(", '").append(mi[1]).append("', ");

  1108                     String methodType = accessClass("java_lang_invoke_MethodType") + "(false).fromMethodDescriptorString__Ljava_lang_invoke_MethodType_2Ljava_lang_String_2Ljava_lang_ClassLoader_2(";

  1109                     append(methodType).append("'").append(type).append("', null)");

  1110 //                    if (numArguments > 0) {

  1111 //                        append(vars[0]);

  1112 //                        for (int j = 1; j < numArguments; ++j) {

  1113 //                            append(", ");

  1114 //                            append(vars[j]);

  1115 //                        }

  1116 //                    }

  1117                     append(");");

  1118                     emit(smapper, this, "throw 'Invoke dynamic: ' + @1 + ': ' + metHan;", "" + indx);

  1119                     i += 4;

  1120                     break;

  1121                     */

  1122                 }

  1123                 case opc_new: {

  1124                     int indx = readUShortArg(byteCodes, i);

  1125                     String ci = jc.getClassName(indx);

  1126                     emit(smapper, this, "var @1 = new @2;",

  1127                          smapper.pushA(), accessClass(mangleClassName(ci)));

  1128                     addReference(ci);

  1129                     i += 2;

  1130                     break;

  1131                 }

  1132                 case opc_newarray:

  1133                     int atype = readUByte(byteCodes, ++i);

  1134                     generateNewArray(atype, smapper);

  1135                     break;

  1136                 case opc_anewarray: {

  1137                     int type = readUShortArg(byteCodes, i);

  1138                     i += 2;

  1139                     generateANewArray(type, smapper);

  1140                     break;

  1141                 }

  1142                 case opc_multianewarray: {

  1143                     int type = readUShortArg(byteCodes, i);

  1144                     i += 2;

  1145                     i = generateMultiANewArray(type, byteCodes, i, smapper);

  1146                     break;

  1147                 }

  1148                 case opc_arraylength:

  1149                     smapper.replace(this, VarType.INTEGER, "(@1).length", smapper.getA(0));

  1150                     break;

  1151                 case opc_lastore:

  1152                     emit(smapper, this, "Array.at(@3, @2, @1);",

  1153                          smapper.popL(), smapper.popI(), smapper.popA());

  1154                     break;

  1155                 case opc_fastore:

  1156                     emit(smapper, this, "Array.at(@3, @2, @1);",

  1157                          smapper.popF(), smapper.popI(), smapper.popA());

  1158                     break;

  1159                 case opc_dastore:

  1160                     emit(smapper, this, "Array.at(@3, @2, @1);",

  1161                          smapper.popD(), smapper.popI(), smapper.popA());

  1162                     break;

  1163                 case opc_aastore:

  1164                     emit(smapper, this, "Array.at(@3, @2, @1);",

  1165                          smapper.popA(), smapper.popI(), smapper.popA());

  1166                     break;

  1167                 case opc_iastore:

  1168                 case opc_bastore:

  1169                 case opc_castore:

  1170                 case opc_sastore:

  1171                     emit(smapper, this, "Array.at(@3, @2, @1);",

  1172                          smapper.popI(), smapper.popI(), smapper.popA());

  1173                     break;

  1174                 case opc_laload:

  1175                     smapper.replace(this, VarType.LONG, "Array.at(@2, @1)",

  1176                          smapper.popI(), smapper.getA(0));

  1177                     break;

  1178                 case opc_faload:

  1179                     smapper.replace(this, VarType.FLOAT, "Array.at(@2, @1)",

  1180                          smapper.popI(), smapper.getA(0));

  1181                     break;

  1182                 case opc_daload:

  1183                     smapper.replace(this, VarType.DOUBLE, "Array.at(@2, @1)",

  1184                          smapper.popI(), smapper.getA(0));

  1185                     break;

  1186                 case opc_aaload:

  1187                     smapper.replace(this, VarType.REFERENCE, "Array.at(@2, @1)",

  1188                          smapper.popI(), smapper.getA(0));

  1189                     break;

  1190                 case opc_iaload:

  1191                 case opc_baload:

  1192                 case opc_caload:

  1193                 case opc_saload:

  1194                     smapper.replace(this, VarType.INTEGER, "Array.at(@2, @1)",

  1195                          smapper.popI(), smapper.getA(0));

  1196                     break;

  1197                 case opc_pop:

  1198                 case opc_pop2:

  1199                     smapper.pop(1);

  1200                     debug("/* pop */");

  1201                     break;

  1202                 case opc_dup: {

  1203                     final Variable v = smapper.get(0);

  1204                     if (smapper.isDirty()) {

  1205                         emit(smapper, this, "var @1 = @2;", smapper.pushT(v.getType()), v);

  1206                     } else {

  1207                         smapper.assign(this, v.getType(), v);

  1208                     }

  1209                     break;

  1210                 }

  1211                 case opc_dup2: {

  1212                     final Variable vi1 = smapper.get(0);

  1214                     if (vi1.isCategory2()) {

  1215                         emit(smapper, this, "var @1 = @2;",

  1216                              smapper.pushT(vi1.getType()), vi1);

  1217                     } else {

  1218                         final Variable vi2 = smapper.get(1);

  1219                         emit(smapper, this, "var @1 = @2, @3 = @4;",

  1220                              smapper.pushT(vi2.getType()), vi2,

  1221                              smapper.pushT(vi1.getType()), vi1);

  1222                     }

  1223                     break;

  1224                 }

  1225                 case opc_dup_x1: {

  1226                     final Variable vi1 = smapper.pop(this);

  1227                     final Variable vi2 = smapper.pop(this);

  1228                     final Variable vo3 = smapper.pushT(vi1.getType());

  1229                     final Variable vo2 = smapper.pushT(vi2.getType());

  1230                     final Variable vo1 = smapper.pushT(vi1.getType());

  1232                     emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6;",

  1233                          vo1, vi1, vo2, vi2, vo3, vo1);

  1234                     break;

  1235                 }

  1236                 case opc_dup2_x1: {

  1237                     final Variable vi1 = smapper.pop(this);

  1238                     final Variable vi2 = smapper.pop(this);

  1240                     if (vi1.isCategory2()) {

  1241                         final Variable vo3 = smapper.pushT(vi1.getType());

  1242                         final Variable vo2 = smapper.pushT(vi2.getType());

  1243                         final Variable vo1 = smapper.pushT(vi1.getType());

  1245                         emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6;",

  1246                              vo1, vi1, vo2, vi2, vo3, vo1);

  1247                     } else {

  1248                         final Variable vi3 = smapper.pop(this);

  1249                         final Variable vo5 = smapper.pushT(vi2.getType());

  1250                         final Variable vo4 = smapper.pushT(vi1.getType());

  1251                         final Variable vo3 = smapper.pushT(vi3.getType());

  1252                         final Variable vo2 = smapper.pushT(vi2.getType());

  1253                         final Variable vo1 = smapper.pushT(vi1.getType());

  1255                         emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6,",

  1256                              vo1, vi1, vo2, vi2, vo3, vi3);

  1257                         emit(smapper, this, " @1 = @2, @3 = @4;",

  1258                              vo4, vo1, vo5, vo2);

  1259                     }

  1260                     break;

  1261                 }

  1262                 case opc_dup_x2: {

  1263                     final Variable vi1 = smapper.pop(this);

  1264                     final Variable vi2 = smapper.pop(this);

  1266                     if (vi2.isCategory2()) {

  1267                         final Variable vo3 = smapper.pushT(vi1.getType());

  1268                         final Variable vo2 = smapper.pushT(vi2.getType());

  1269                         final Variable vo1 = smapper.pushT(vi1.getType());

  1271                         emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6;",

  1272                              vo1, vi1, vo2, vi2, vo3, vo1);

  1273                     } else {

  1274                         final Variable vi3 = smapper.pop(this);

  1275                         final Variable vo4 = smapper.pushT(vi1.getType());

  1276                         final Variable vo3 = smapper.pushT(vi3.getType());

  1277                         final Variable vo2 = smapper.pushT(vi2.getType());

  1278                         final Variable vo1 = smapper.pushT(vi1.getType());

  1280                         emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6, @7 = @8;",

  1281                              vo1, vi1, vo2, vi2, vo3, vi3, vo4, vo1);

  1282                     }

  1283                     break;

  1284                 }

  1285                 case opc_dup2_x2: {

  1286                     final Variable vi1 = smapper.pop(this);

  1287                     final Variable vi2 = smapper.pop(this);

  1289                     if (vi1.isCategory2()) {

  1290                         if (vi2.isCategory2()) {

  1291                             final Variable vo3 = smapper.pushT(vi1.getType());

  1292                             final Variable vo2 = smapper.pushT(vi2.getType());

  1293                             final Variable vo1 = smapper.pushT(vi1.getType());

  1295                             emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6;",

  1296                                  vo1, vi1, vo2, vi2, vo3, vo1);

  1297                         } else {

  1298                             final Variable vi3 = smapper.pop(this);

  1299                             final Variable vo4 = smapper.pushT(vi1.getType());

  1300                             final Variable vo3 = smapper.pushT(vi3.getType());

  1301                             final Variable vo2 = smapper.pushT(vi2.getType());

  1302                             final Variable vo1 = smapper.pushT(vi1.getType());

  1304                             emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6, @7 = @8;",

  1305                                  vo1, vi1, vo2, vi2, vo3, vi3, vo4, vo1);

  1306                         }

  1307                     } else {

  1308                         final Variable vi3 = smapper.pop(this);

  1310                         if (vi3.isCategory2()) {

  1311                             final Variable vo5 = smapper.pushT(vi2.getType());

  1312                             final Variable vo4 = smapper.pushT(vi1.getType());

  1313                             final Variable vo3 = smapper.pushT(vi3.getType());

  1314                             final Variable vo2 = smapper.pushT(vi2.getType());

  1315                             final Variable vo1 = smapper.pushT(vi1.getType());

  1317                             emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6,",

  1318                                  vo1, vi1, vo2, vi2, vo3, vi3);

  1319                             emit(smapper, this, " @1 = @2, @3 = @4;",

  1320                                  vo4, vo1, vo5, vo2);

  1321                         } else {

  1322                             final Variable vi4 = smapper.pop(this);

  1323                             final Variable vo6 = smapper.pushT(vi2.getType());

  1324                             final Variable vo5 = smapper.pushT(vi1.getType());

  1325                             final Variable vo4 = smapper.pushT(vi4.getType());

  1326                             final Variable vo3 = smapper.pushT(vi3.getType());

  1327                             final Variable vo2 = smapper.pushT(vi2.getType());

  1328                             final Variable vo1 = smapper.pushT(vi1.getType());

  1330                             emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6, @7 = @8,",

  1331                                  vo1, vi1, vo2, vi2, vo3, vi3, vo4, vi4);

  1332                             emit(smapper, this, " @1 = @2, @3 = @4;",

  1333                                  vo5, vo1, vo6, vo2);

  1334                         }

  1335                     }

  1336                     break;

  1337                 }

  1338                 case opc_swap: {

  1339                     final Variable vi1 = smapper.get(0);

  1340                     final Variable vi2 = smapper.get(1);

  1342                     if (vi1.getType() == vi2.getType()) {

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

  1345                         emit(smapper, this, "var @1 = @2, @2 = @3, @3 = @1;",

  1346                              tmp, vi1, vi2);

  1347                         smapper.pop(1);

  1348                     } else {

  1349                         smapper.pop(2);

  1350                         smapper.pushT(vi1.getType());

  1351                         smapper.pushT(vi2.getType());

  1352                     }

  1353                     break;

  1354                 }

  1355                 case opc_bipush:

  1356                     smapper.assign(this, VarType.INTEGER,

  1357                         "(" + Integer.toString(byteCodes[++i]) + ")");

  1358                     break;

  1359                 case opc_sipush:

  1360                     smapper.assign(this, VarType.INTEGER,

  1361                         "(" + Integer.toString(readShortArg(byteCodes, i)) + ")"

  1362                     );

  1363                     i += 2;

  1364                     break;

  1365                 case opc_getfield: {

  1366                     int indx = readUShortArg(byteCodes, i);

  1367                     String[] fi = jc.getFieldInfoName(indx);

  1368                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1369                     final String mangleClass = mangleClassName(fi[0]);

  1370                     final String mangleClassAccess = accessClass(mangleClass);

  1371                     smapper.replace(this, type, "@2.call(@1)",

  1372                          smapper.getA(0),

  1373                          accessField(mangleClassAccess + "(false)",

  1374                                      "_" + fi[1], fi)

  1375                     );

  1376                     i += 2;

  1377                     break;

  1378                 }

  1379                 case opc_putfield: {

  1380                     int indx = readUShortArg(byteCodes, i);

  1381                     String[] fi = jc.getFieldInfoName(indx);

  1382                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1383                     final String mangleClass = mangleClassName(fi[0]);

  1384                     final String mangleClassAccess = accessClass(mangleClass);

  1385                     emit(smapper, this, "@3.call(@2, @1);",

  1386                          smapper.popT(type),

  1387                          smapper.popA(),

  1388                          accessField(mangleClassAccess + "(false)",

  1389                                      "_" + fi[1], fi));

  1390                     i += 2;

  1391                     break;

  1392                 }

  1393                 case opc_getstatic: {

  1394                     int indx = readUShortArg(byteCodes, i);

  1395                     String[] fi = jc.getFieldInfoName(indx);

  1396                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1397                     String ac = accessClass(mangleClassName(fi[0]));

  1398                     String af = accessField(ac + "(false)", "_" + fi[1], fi);

  1399                     smapper.assign(this, type, af + "()");

  1400                     i += 2;

  1401                     addReference(fi[0]);

  1402                     break;

  1403                 }

  1404                 case opc_putstatic: {

  1405                     int indx = readUShortArg(byteCodes, i);

  1406                     String[] fi = jc.getFieldInfoName(indx);

  1407                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1408                     emit(smapper, this, "@1(false)._@2(@3);",

  1409                          accessClass(mangleClassName(fi[0])), fi[1],

  1410                          smapper.popT(type));

  1411                     i += 2;

  1412                     addReference(fi[0]);

  1413                     break;

  1414                 }

  1415                 case opc_checkcast: {

  1416                     int indx = readUShortArg(byteCodes, i);

  1417                     generateCheckcast(indx, smapper);

  1418                     i += 2;

  1419                     break;

  1420                 }

  1421                 case opc_instanceof: {

  1422                     int indx = readUShortArg(byteCodes, i);

  1423                     generateInstanceOf(indx, smapper);

  1424                     i += 2;

  1425                     break;

  1426                 }

  1427                 case opc_athrow: {

  1428                     final CharSequence v = smapper.popA();

  1429                     smapper.clear();

  1431                     emit(smapper, this, "{ var @1 = @2; throw @2; }",

  1432                          smapper.pushA(), v);

  1433                     break;

  1434                 }

  1436                 case opc_monitorenter: {

  1437                     debug("/* monitor enter */");

  1438                     smapper.popA();

  1439                     break;

  1440                 }

  1442                 case opc_monitorexit: {

  1443                     debug("/* monitor exit */");

  1444                     smapper.popA();

  1445                     break;

  1446                 }

  1448                 case opc_wide:

  1449                     wide = true;

  1450                     break;

  1452                 default: {

  1453                     wide = false;

  1454                     emit(smapper, this, "throw 'unknown bytecode @1';",

  1455                          Integer.toString(c));

  1456                 }

  1457             }

  1458             if (debug(" //")) {

  1459                 generateByteCodeComment(prev, i, byteCodes);

  1460             }

  1461             if (outChanged) {

  1462                 append("\n");

  1463             }

  1464         }

  1465         if (previousTrap != null) {

  1466             generateCatch(previousTrap, byteCodes.length, topMostLabel);

  1467         }

  1468         if (didBranches) {

  1469             append("\n    }\n");

  1470         }

  1471         while (openBraces-- > 0) {

  1472             append('}');

  1473         }

  1474         if (defineProp) {

  1475             append("\n}});");

  1476         } else {

  1477             append("\n};");

  1478         }

  1479         return defineProp;

  1480     }

  1482     private int generateIf(StackMapper mapper, byte[] byteCodes,

  1483         int i, final CharSequence v2, final CharSequence v1,

  1484         final String test, int topMostLabel

  1485     ) throws IOException {

  1486         mapper.flush(this);

  1487         int indx = i + readShortArg(byteCodes, i);

  1488         append("if ((").append(v1)

  1489            .append(") ").append(test).append(" (")

  1490            .append(v2).append(")) ");

  1491         goTo(this, i, indx, topMostLabel);

  1492         return i + 2;

  1493     }

  1495     private int readInt4(byte[] byteCodes, int offset) {

  1496         final int d = byteCodes[offset + 0] << 24;

  1497         final int c = byteCodes[offset + 1] << 16;

  1498         final int b = byteCodes[offset + 2] << 8;

  1499         final int a = byteCodes[offset + 3];

  1500         return (d & 0xff000000) | (c & 0xff0000) | (b & 0xff00) | (a & 0xff);

  1501     }

  1502     private static int readUByte(byte[] byteCodes, int offset) {

  1503         return byteCodes[offset] & 0xff;

  1504     }

  1506     private static int readUShort(byte[] byteCodes, int offset) {

  1507         return ((byteCodes[offset] & 0xff) << 8)

  1508                     | (byteCodes[offset + 1] & 0xff);

  1509     }

  1510     private static int readUShortArg(byte[] byteCodes, int offsetInstruction) {

  1511         return readUShort(byteCodes, offsetInstruction + 1);

  1512     }

  1514     private static int readShort(byte[] byteCodes, int offset) {

  1515         int signed = byteCodes[offset];

  1516         byte b0 = (byte)signed;

  1517         return (b0 << 8) | (byteCodes[offset + 1] & 0xff);

  1518     }

  1519     private static int readShortArg(byte[] byteCodes, int offsetInstruction) {

  1520         return readShort(byteCodes, offsetInstruction + 1);

  1521     }

  1523     private static void countArgs(String descriptor, char[] returnType, StringBuilder sig, StringBuilder cnt) {

  1524         int i = 0;

  1525         Boolean count = null;

  1526         boolean array = false;

  1527         sig.append("__");

  1528         int firstPos = sig.length();

  1529         while (i < descriptor.length()) {

  1530             char ch = descriptor.charAt(i++);

  1531             switch (ch) {

  1532                 case '(':

  1533                     count = true;

  1534                     continue;

  1535                 case ')':

  1536                     count = false;

  1537                     continue;

  1538                 case 'B':

  1539                 case 'C':

  1540                 case 'D':

  1541                 case 'F':

  1542                 case 'I':

  1543                 case 'J':

  1544                 case 'S':

  1545                 case 'Z':

  1546                     if (count) {

  1547                         if (array) {

  1548                             sig.append("_3");

  1549                         }

  1550                         sig.append(ch);

  1551                         if (ch == 'J' || ch == 'D') {

  1552                             cnt.append('1');

  1553                         } else {

  1554                             cnt.append('0');

  1555                         }

  1556                     } else {

  1557                         sig.insert(firstPos, ch);

  1558                         if (array) {

  1559                             returnType[0] = '[';

  1560                             sig.insert(firstPos, "_3");

  1561                         } else {

  1562                             returnType[0] = ch;

  1563                         }

  1564                     }

  1565                     array = false;

  1566                     continue;

  1567                 case 'V':

  1568                     assert !count;

  1569                     returnType[0] = 'V';

  1570                     sig.insert(firstPos, 'V');

  1571                     continue;

  1572                 case 'L':

  1573                     int next = descriptor.indexOf(';', i);

  1574                     String realSig = mangleSig(descriptor, i - 1, next + 1);

  1575                     if (count) {

  1576                         if (array) {

  1577                             sig.append("_3");

  1578                         }

  1579                         sig.append(realSig);

  1580                         cnt.append('0');

  1581                     } else {

  1582                         sig.insert(firstPos, realSig);

  1583                         if (array) {

  1584                             sig.insert(firstPos, "_3");

  1585                         }

  1586                         returnType[0] = 'L';

  1587                     }

  1588                     i = next + 1;

  1589                     array = false;

  1590                     continue;

  1591                 case '[':

  1592                     array = true;

  1593                     continue;

  1594                 default:

  1595                     throw new IllegalStateException("Invalid char: " + ch);

  1596             }

  1597         }

  1598     }

  1600     static String mangleSig(String sig) {

  1601         return mangleSig(sig, 0, sig.length());

  1602     }

  1604     private static String mangleMethodName(String name) {

  1605         StringBuilder sb = new StringBuilder(name.length() * 2);

  1606         int last = name.length();

  1607         for (int i = 0; i < last; i++) {

  1608             final char ch = name.charAt(i);

  1609             switch (ch) {

  1610                 case '_': sb.append("_1"); break;

  1611                 default: sb.append(ch); break;

  1612             }

  1613         }

  1614         return sb.toString();

  1615     }

  1616     private static String mangleSig(String txt, int first, int last) {

  1617         StringBuilder sb = new StringBuilder((last - first) * 2);

  1618         for (int i = first; i < last; i++) {

  1619             final char ch = txt.charAt(i);

  1620             switch (ch) {

  1621                 case '/': sb.append('_'); break;

  1622                 case '_': sb.append("_1"); break;

  1623                 case ';': sb.append("_2"); break;

  1624                 case '[': sb.append("_3"); break;

  1625                 default:

  1626                     if (Character.isJavaIdentifierPart(ch)) {

  1627                         sb.append(ch);

  1628                     } else {

  1629                         sb.append("_0");

  1630                         String hex = Integer.toHexString(ch).toLowerCase();

  1631                         for (int m = hex.length(); m < 4; m++) {

  1632                             sb.append("0");

  1633                         }

  1634                         sb.append(hex);

  1635                     }

  1636                 break;

  1637             }

  1638         }

  1639         return sb.toString();

  1640     }

  1642     private static String mangleClassName(String name) {

  1643         return mangleSig(name);

  1644     }

  1646     private static String findMethodName(MethodData m, StringBuilder cnt) {

  1647         StringBuilder name = new StringBuilder();

  1648         if ("<init>".equals(m.getName())) { // NOI18N

  1649             name.append("cons"); // NOI18N

  1650         } else if ("<clinit>".equals(m.getName())) { // NOI18N

  1651             name.append("class"); // NOI18N

  1652         } else {

  1653             name.append(mangleMethodName(m.getName()));

  1654         }

  1656         countArgs(m.getInternalSig(), new char[1], name, cnt);

  1657         return name.toString();

  1658     }

  1660     static String findMethodName(String[] mi, StringBuilder cnt, char[] returnType) {

  1661         StringBuilder name = new StringBuilder();

  1662         String descr = mi[2];//mi.getDescriptor();

  1663         String nm= mi[1];

  1664         if ("<init>".equals(nm)) { // NOI18N

  1665             name.append("cons"); // NOI18N

  1666         } else {

  1667             name.append(mangleMethodName(nm));

  1668         }

  1669         countArgs(descr, returnType, name, cnt);

  1670         return name.toString();

  1671     }

  1673     private int invokeStaticMethod(byte[] byteCodes, int i, final StackMapper mapper, boolean isStatic)

  1674     throws IOException {

  1675         int methodIndex = readUShortArg(byteCodes, i);

  1676         String[] mi = jc.getFieldInfoName(methodIndex);

  1677         char[] returnType = { 'V' };

  1678         StringBuilder cnt = new StringBuilder();

  1679         String mn = findMethodName(mi, cnt, returnType);

  1681         final int numArguments = isStatic ? cnt.length() : cnt.length() + 1;

  1682         final CharSequence[] vars = new CharSequence[numArguments];

  1684         for (int j = numArguments - 1; j >= 0; --j) {

  1685             vars[j] = mapper.popValue();

  1686         }

  1688         if (returnType[0] != 'V') {

  1689             mapper.flush(this);

  1690             append("var ")

  1691                .append(mapper.pushT(VarType.fromFieldType(returnType[0])))

  1692                .append(" = ");

  1693         }

  1695         final String in = mi[0];

  1696         String mcn;

  1697         if (callbacks && (

  1698             in.equals("org/apidesign/html/boot/spi/Fn") ||

  1699             in.equals("org/netbeans/html/boot/spi/Fn")

  1700         )) {

  1701             mcn = "java_lang_Class";

  1702         } else {

  1703             mcn = mangleClassName(in);

  1704         }

  1705         String object = accessClass(mcn) + "(false)";

  1706         if (mn.startsWith("cons_")) {

  1707             object += ".constructor";

  1708         }

  1709         append(accessStaticMethod(object, mn, mi));

  1710         if (isStatic) {

  1711             append('(');

  1712         } else {

  1713             append(".call(");

  1714         }

  1715         if (numArguments > 0) {

  1716             append(vars[0]);

  1717             for (int j = 1; j < numArguments; ++j) {

  1718                 append(", ");

  1719                 append(vars[j]);

  1720             }

  1721         }

  1722         append(");");

  1723         i += 2;

  1724         addReference(in);

  1725         return i;

  1726     }

  1727     private int invokeVirtualMethod(byte[] byteCodes, int i, final StackMapper mapper)

  1728     throws IOException {

  1729         int methodIndex = readUShortArg(byteCodes, i);

  1730         String[] mi = jc.getFieldInfoName(methodIndex);

  1731         char[] returnType = { 'V' };

  1732         StringBuilder cnt = new StringBuilder();

  1733         String mn = findMethodName(mi, cnt, returnType);

  1735         final int numArguments = cnt.length() + 1;

  1736         final CharSequence[] vars =  new CharSequence[numArguments];

  1738         for (int j = numArguments - 1; j >= 0; --j) {

  1739             vars[j] = mapper.popValue();

  1740         }

  1742         if (returnType[0] != 'V') {

  1743             append("var ")

  1744                .append(mapper.pushT(VarType.fromFieldType(returnType[0])))

  1745                .append(" = ");

  1746         }

  1748         append(accessVirtualMethod(vars[0].toString(), mn, mi, numArguments));

  1749         String sep = "";

  1750         for (int j = 1; j < numArguments; ++j) {

  1751             append(sep);

  1752             append(vars[j]);

  1753             sep = ", ";

  1754         }

  1755         append(");");

  1756         i += 2;

  1757         return i;

  1758     }

  1760     private void addReference(String cn) throws IOException {

  1761         if (requireReference(cn)) {

  1762             debug(" /* needs " + cn + " */");

  1763         }

  1764     }

  1766     private void outType(String d, StringBuilder out) {

  1767         int arr = 0;

  1768         while (d.charAt(0) == '[') {

  1769             out.append('A');

  1770             d = d.substring(1);

  1771         }

  1772         if (d.charAt(0) == 'L') {

  1773             assert d.charAt(d.length() - 1) == ';';

  1774             out.append(d.replace('/', '_').substring(0, d.length() - 1));

  1775         } else {

  1776             out.append(d);

  1777         }

  1778     }

  1780     private String encodeConstant(int entryIndex) throws IOException {

  1781         String[] classRef = { null };

  1782         String s = jc.stringValue(entryIndex, classRef);

  1783         if (classRef[0] != null) {

  1784             if (classRef[0].startsWith("[")) {

  1785                 s = accessClass("java_lang_Class") + "(false)['forName__Ljava_lang_Class_2Ljava_lang_String_2']('" + classRef[0] + "')";

  1786             } else {

  1787                 addReference(classRef[0]);

  1788                 s = accessClass(mangleClassName(s)) + "(false).constructor.$class";

  1789             }

  1790         }

  1791         return s;

  1792     }

  1794     private String javaScriptBody(String destObject, MethodData m, boolean isStatic) throws IOException {

  1795         byte[] arr = m.findAnnotationData(true);

  1796         if (arr == null) {

  1797             return null;

  1798         }

  1799         final String jvmType = "Lorg/apidesign/bck2brwsr/core/JavaScriptBody;";

  1800         final String htmlType = "Lnet/java/html/js/JavaScriptBody;";

  1801         class P extends AnnotationParser {

  1802             public P() {

  1803                 super(false, true);

  1804             }

  1806             int cnt;

  1807             String[] args = new String[30];

  1808             String body;

  1809             boolean javacall;

  1810             boolean html4j;

  1812             @Override

  1813             protected void visitAttr(String type, String attr, String at, String value) {

  1814                 if (type.equals(jvmType)) {

  1815                     if ("body".equals(attr)) {

  1816                         body = value;

  1817                     } else if ("args".equals(attr)) {

  1818                         args[cnt++] = value;

  1819                     } else {

  1820                         throw new IllegalArgumentException(attr);

  1821                     }

  1822                 }

  1823                 if (type.equals(htmlType)) {

  1824                     html4j = true;

  1825                     if ("body".equals(attr)) {

  1826                         body = value;

  1827                     } else if ("args".equals(attr)) {

  1828                         args[cnt++] = value;

  1829                     } else if ("javacall".equals(attr)) {

  1830                         javacall = "1".equals(value);

  1831                     } else if ("wait4js".equals(attr)) {

  1832                         // ignore, we always invoke synchronously

  1833                     } else {

  1834                         throw new IllegalArgumentException(attr);

  1835                     }

  1836                 }

  1837             }

  1838         }

  1839         P p = new P();

  1840         p.parse(arr, jc);

  1841         if (p.body == null) {

  1842             return null;

  1843         }

  1844         StringBuilder cnt = new StringBuilder();

  1845         final String mn = findMethodName(m, cnt);

  1846         append("m = ").append(destObject).append(".").append(mn);

  1847         append(" = function(");

  1848         String space = "";

  1849         int index = 0;

  1850         StringBuilder toValue = new StringBuilder();

  1851         for (int i = 0; i < cnt.length(); i++) {

  1852             append(space);

  1853             space = outputArg(this, p.args, index);

  1854             if (p.html4j && space.length() > 0) {

  1855                 toValue.append("\n  ").append(p.args[index]).append(" = ")

  1856                     .append(accessClass("java_lang_Class")).append("(false).toJS(").

  1857                     append(p.args[index]).append(");");

  1858             }

  1859             index++;

  1860         }

  1861         append(") {").append("\n");

  1862         append(toValue.toString());

  1863         if (p.javacall) {

  1864             int lastSlash = jc.getClassName().lastIndexOf('/');

  1865             final String pkg = jc.getClassName().substring(0, lastSlash);

  1866             append(mangleCallbacks(pkg, p.body));

  1867             requireReference(pkg + "/$JsCallbacks$");

  1868         } else {

  1869             append(p.body);

  1870         }

  1871         append("\n}\n");

  1872         return mn;

  1873     }

  1875     private static CharSequence mangleCallbacks(String pkgName, String body) {

  1876         StringBuilder sb = new StringBuilder();

  1877         int pos = 0;

  1878         for (;;) {

  1879             int next = body.indexOf(".@", pos);

  1880             if (next == -1) {

  1881                 sb.append(body.substring(pos));

  1882                 body = sb.toString();

  1883                 break;

  1884             }

  1885             int ident = next;

  1886             while (ident > 0) {

  1887                 if (!Character.isJavaIdentifierPart(body.charAt(--ident))) {

  1888                     ident++;

  1889                     break;

  1890                 }

  1891             }

  1892             String refId = body.substring(ident, next);

  1894             sb.append(body.substring(pos, ident));

  1896             int sigBeg = body.indexOf('(', next);

  1897             int sigEnd = body.indexOf(')', sigBeg);

  1898             int colon4 = body.indexOf("::", next);

  1899             if (sigBeg == -1 || sigEnd == -1 || colon4 == -1) {

  1900                 throw new IllegalStateException("Malformed body " + body);

  1901             }

  1902             String fqn = body.substring(next + 2, colon4);

  1903             String method = body.substring(colon4 + 2, sigBeg);

  1904             String params = body.substring(sigBeg, sigEnd + 1);

  1906             int paramBeg = body.indexOf('(', sigEnd + 1);

  1908             sb.append("vm.").append(pkgName.replace('/', '_')).append("_$JsCallbacks$(false)._VM().");

  1909             sb.append(mangleJsCallbacks(fqn, method, params, false));

  1910             sb.append("(").append(refId);

  1911             if (body.charAt(paramBeg + 1) != ')') {

  1912                 sb.append(",");

  1913             }

  1914             pos = paramBeg + 1;

  1915         }

  1916         sb = null;

  1917         pos = 0;

  1918         for (;;) {

  1919             int next = body.indexOf("@", pos);

  1920             if (next == -1) {

  1921                 if (sb == null) {

  1922                     return body;

  1923                 }

  1924                 sb.append(body.substring(pos));

  1925                 return sb;

  1926             }

  1927             if (sb == null) {

  1928                 sb = new StringBuilder();

  1929             }

  1931             sb.append(body.substring(pos, next));

  1933             int sigBeg = body.indexOf('(', next);

  1934             int sigEnd = body.indexOf(')', sigBeg);

  1935             int colon4 = body.indexOf("::", next);

  1936             if (sigBeg == -1 || sigEnd == -1 || colon4 == -1) {

  1937                 throw new IllegalStateException("Malformed body " + body);

  1938             }

  1939             String fqn = body.substring(next + 1, colon4);

  1940             String method = body.substring(colon4 + 2, sigBeg);

  1941             String params = body.substring(sigBeg, sigEnd + 1);

  1943             int paramBeg = body.indexOf('(', sigEnd + 1);

  1945             sb.append("vm.").append(pkgName.replace('/', '_')).append("_$JsCallbacks$(false)._VM().");

  1946             sb.append(mangleJsCallbacks(fqn, method, params, true));

  1947             sb.append("(");

  1948             pos = paramBeg + 1;

  1949         }

  1950     }

  1952     static String mangleJsCallbacks(String fqn, String method, String params, boolean isStatic) {

  1953         if (params.startsWith("(")) {

  1954             params = params.substring(1);

  1955         }

  1956         if (params.endsWith(")")) {

  1957             params = params.substring(0, params.length() - 1);

  1958         }

  1959         StringBuilder sb = new StringBuilder();

  1960         final String fqnu = fqn.replace('.', '_');

  1961         final String rfqn = mangleClassName(fqnu);

  1962         final String rm = mangleMethodName(method);

  1963         final String srp;

  1964         {

  1965             StringBuilder pb = new StringBuilder();

  1966             int len = params.length();

  1967             int indx = 0;

  1968             while (indx < len) {

  1969                 char ch = params.charAt(indx);

  1970                 if (ch == '[' || ch == 'L') {

  1971                     pb.append("Ljava/lang/Object;");

  1972                     indx = params.indexOf(';', indx) + 1;

  1973                 } else {

  1974                     pb.append(ch);

  1975                     indx++;

  1976                 }

  1977             }

  1978             srp = mangleSig(pb.toString());

  1979         }

  1980         final String rp = mangleSig(params);

  1981         final String mrp = mangleMethodName(rp);

  1982         sb.append(rfqn).append("$").append(rm).

  1983             append('$').append(mrp).append("__Ljava_lang_Object_2");

  1984         if (!isStatic) {

  1985             sb.append('L').append(fqnu).append("_2");

  1986         }

  1987         sb.append(srp);

  1988         return sb.toString();

  1989     }

  1991     private static String className(ClassData jc) {

  1992         //return jc.getName().getInternalName().replace('/', '_');

  1993         return mangleClassName(jc.getClassName());

  1994     }

  1996     private static String[] findAnnotation(

  1997         byte[] arr, ClassData cd, final String className,

  1998         final String... attrNames

  1999     ) throws IOException {

  2000         if (arr == null) {

  2001             return null;

  2002         }

  2003         final String[] values = new String[attrNames.length];

  2004         final boolean[] found = { false };

  2005         final String jvmType = "L" + className.replace('.', '/') + ";";

  2006         AnnotationParser ap = new AnnotationParser(false, true) {

  2007             @Override

  2008             protected void visitAttr(String type, String attr, String at, String value) {

  2009                 if (type.equals(jvmType)) {

  2010                     found[0] = true;

  2011                     for (int i = 0; i < attrNames.length; i++) {

  2012                         if (attrNames[i].equals(attr)) {

  2013                             values[i] = value;

  2014                         }

  2015                     }

  2016                 }

  2017             }

  2019         };

  2020         ap.parse(arr, cd);

  2021         return found[0] ? values : null;

  2022     }

  2024     private CharSequence initField(FieldData v) {

  2025         final String is = v.getInternalSig();

  2026         if (is.length() == 1) {

  2027             switch (is.charAt(0)) {

  2028                 case 'S':

  2029                 case 'J':

  2030                 case 'B':

  2031                 case 'Z':

  2032                 case 'C':

  2033                 case 'I': return " = 0;";

  2034                 case 'F':

  2035                 case 'D': return " = 0.0;";

  2036                 default:

  2037                     throw new IllegalStateException(is);

  2038             }

  2039         }

  2040         return " = null;";

  2041     }

  2043     private void generateAnno(ClassData cd, byte[] data) throws IOException {

  2044         AnnotationParser ap = new AnnotationParser(true, false) {

  2045             int[] cnt = new int[32];

  2046             int depth;

  2048             @Override

  2049             protected void visitAnnotationStart(String attrType, boolean top) throws IOException {

  2050                 final String slashType = attrType.substring(1, attrType.length() - 1);

  2051                 requireReference(slashType);

  2053                 if (cnt[depth]++ > 0) {

  2054                     append(",");

  2055                 }

  2056                 if (top) {

  2057                     append('"').append(attrType).append("\" : ");

  2058                 }

  2059                 append("{\n");

  2060                 cnt[++depth] = 0;

  2061             }

  2063             @Override

  2064             protected void visitAnnotationEnd(String type, boolean top) throws IOException {

  2065                 append("\n}\n");

  2066                 depth--;

  2067             }

  2069             @Override

  2070             protected void visitValueStart(String attrName, char type) throws IOException {

  2071                 if (cnt[depth]++ > 0) {

  2072                     append(",\n");

  2073                 }

  2074                 cnt[++depth] = 0;

  2075                 if (attrName != null) {

  2076                     append('"').append(attrName).append("\" : ");

  2077                 }

  2078                 if (type == '[') {

  2079                     append("[");

  2080                 }

  2081             }

  2083             @Override

  2084             protected void visitValueEnd(String attrName, char type) throws IOException {

  2085                 if (type == '[') {

  2086                     append("]");

  2087                 }

  2088                 depth--;

  2089             }

  2091             @Override

  2092             protected void visitAttr(String type, String attr, String attrType, String value)

  2093             throws IOException {

  2094                 if (attr == null && value == null) {

  2095                     return;

  2096                 }

  2097                 append(value);

  2098             }

  2100             @Override

  2101             protected void visitEnumAttr(String type, String attr, String attrType, String value)

  2102             throws IOException {

  2103                 final String slashType = attrType.substring(1, attrType.length() - 1);

  2104                 requireReference(slashType);

  2106                 final String cn = mangleClassName(slashType);

  2107                 append(accessClass(cn))

  2108                    .append("(false)['valueOf__L").

  2109                     append(cn).

  2110                     append("_2Ljava_lang_String_2']('").

  2111                     append(value).

  2112                     append("')");

  2113             }

  2114         };

  2115         ap.parse(data, cd);

  2116     }

  2118     private static String outputArg(Appendable out, String[] args, int indx) throws IOException {

  2119         final String name = args[indx];

  2120         if (name == null) {

  2121             return "";

  2122         }

  2123         if (name.contains(",")) {

  2124             throw new IOException("Wrong parameter with ',': " + name);

  2125         }

  2126         out.append(name);

  2127         return ",";

  2128     }

  2130     final void emitNoFlush(

  2131         StackMapper sm,

  2132         final String format, final CharSequence... params

  2133     ) throws IOException {

  2134         emitImpl(this, format, params);

  2135     }

  2136     static final void emit(

  2137         StackMapper sm,

  2138         final Appendable out,

  2139         final String format, final CharSequence... params

  2140     ) throws IOException {

  2141         sm.flush(out);

  2142         emitImpl(out, format, params);

  2143     }

  2144     static void emitImpl(final Appendable out,

  2145                              final String format,

  2146                              final CharSequence... params) throws IOException {

  2147         final int length = format.length();

  2149         int processed = 0;

  2150         int paramOffset = format.indexOf('@');

  2151         while ((paramOffset != -1) && (paramOffset < (length - 1))) {

  2152             final char paramChar = format.charAt(paramOffset + 1);

  2153             if ((paramChar >= '1') && (paramChar <= '9')) {

  2154                 final int paramIndex = paramChar - '0' - 1;

  2156                 out.append(format, processed, paramOffset);

  2157                 out.append(params[paramIndex]);

  2159                 ++paramOffset;

  2160                 processed = paramOffset + 1;

  2161             }

  2163             paramOffset = format.indexOf('@', paramOffset + 1);

  2164         }

  2166         out.append(format, processed, length);

  2167     }

  2169     private void generateCatch(TrapData[] traps, int current, int topMostLabel) throws IOException {

  2170         append("} catch (e) {\n");

  2171         int finallyPC = -1;

  2172         for (TrapData e : traps) {

  2173             if (e == null) {

  2174                 break;

  2175             }

  2176             if (e.catch_cpx != 0) { //not finally

  2177                 final String classInternalName = jc.getClassName(e.catch_cpx);

  2178                 addReference(classInternalName);

  2179                 append("e = vm.java_lang_Class(false).bck2BrwsrThrwrbl(e);");

  2180                 append("if (e['$instOf_" + classInternalName.replace('/', '_') + "']) {");

  2181                 append("var stA0 = e;");

  2182                 goTo(this, current, e.handler_pc, topMostLabel);

  2183                 append("}\n");

  2184             } else {

  2185                 finallyPC = e.handler_pc;

  2186             }

  2187         }

  2188         if (finallyPC == -1) {

  2189             append("throw e;");

  2190         } else {

  2191             append("var stA0 = e;");

  2192             goTo(this, current, finallyPC, topMostLabel);

  2193         }

  2194         append("\n}");

  2195     }

  2197     private static void goTo(Appendable out, int current, int to, int canBack) throws IOException {

  2198         if (to < current) {

  2199             if (canBack < to) {

  2200                 out.append("{ gt = 0; continue X_" + to + "; }");

  2201             } else {

  2202                 out.append("{ gt = " + to + "; continue X_0; }");

  2203             }

  2204         } else {

  2205             out.append("{ gt = " + to + "; break IF; }");

  2206         }

  2207     }

  2209     private static void emitIf(

  2210         StackMapper sm,

  2211         Appendable out, String pattern,

  2212         CharSequence param,

  2213         int current, int to, int canBack

  2214     ) throws IOException {

  2215         sm.flush(out);

  2216         emitImpl(out, pattern, param);

  2217         goTo(out, current, to, canBack);

  2218     }

  2220     private void generateNewArray(int atype, final StackMapper smapper) throws IOException, IllegalStateException {

  2221         String jvmType;

  2222         switch (atype) {

  2223             case 4: jvmType = "[Z"; break;

  2224             case 5: jvmType = "[C"; break;

  2225             case 6: jvmType = "[F"; break;

  2226             case 7: jvmType = "[D"; break;

  2227             case 8: jvmType = "[B"; break;

  2228             case 9: jvmType = "[S"; break;

  2229             case 10: jvmType = "[I"; break;

  2230             case 11: jvmType = "[J"; break;

  2231             default: throw new IllegalStateException("Array type: " + atype);

  2232         }

  2233         emit(smapper, this,

  2234             "var @2 = Array.prototype['newArray__Ljava_lang_Object_2ZLjava_lang_String_2Ljava_lang_Object_2I'](true, '@3', null, @1);",

  2235              smapper.popI(), smapper.pushA(), jvmType);

  2236     }

  2238     private void generateANewArray(int type, final StackMapper smapper) throws IOException {

  2239         String typeName = jc.getClassName(type);

  2240         String ref = "null";

  2241         if (typeName.startsWith("[")) {

  2242             typeName = "'[" + typeName + "'";

  2243         } else {

  2244             ref = "vm." + mangleClassName(typeName);

  2245             typeName = "'[L" + typeName + ";'";

  2246         }

  2247         emit(smapper, this,

  2248             "var @2 = Array.prototype['newArray__Ljava_lang_Object_2ZLjava_lang_String_2Ljava_lang_Object_2I'](false, @3, @4, @1);",

  2249              smapper.popI(), smapper.pushA(), typeName, ref);

  2250     }

  2252     private int generateMultiANewArray(int type, final byte[] byteCodes, int i, final StackMapper smapper) throws IOException {

  2253         String typeName = jc.getClassName(type);

  2254         int dim = readUByte(byteCodes, ++i);

  2255         StringBuilder dims = new StringBuilder();

  2256         dims.append('[');

  2257         for (int d = 0; d < dim; d++) {

  2258             if (d != 0) {

  2259                 dims.insert(1, ",");

  2260             }

  2261             dims.insert(1, smapper.popI());

  2262         }

  2263         dims.append(']');

  2264         String fn = "null";

  2265         if (typeName.charAt(dim) == 'L') {

  2266             fn = "vm." + mangleClassName(typeName.substring(dim + 1, typeName.length() - 1));

  2267         }

  2268         emit(smapper, this,

  2269             "var @2 = Array.prototype['multiNewArray__Ljava_lang_Object_2Ljava_lang_String_2_3ILjava_lang_Object_2']('@3', @1, @4);",

  2270              dims.toString(), smapper.pushA(), typeName, fn

  2271         );

  2272         return i;

  2273     }

  2275     private int generateTableSwitch(int i, final byte[] byteCodes, final StackMapper smapper, int topMostLabel) throws IOException {

  2276         int table = i / 4 * 4 + 4;

  2277         int dflt = i + readInt4(byteCodes, table);

  2278         table += 4;

  2279         int low = readInt4(byteCodes, table);

  2280         table += 4;

  2281         int high = readInt4(byteCodes, table);

  2282         table += 4;

  2283         final CharSequence swVar = smapper.popValue();

  2284         smapper.flush(this);

  2285         append("switch (").append(swVar).append(") {\n");

  2286         while (low <= high) {

  2287             int offset = i + readInt4(byteCodes, table);

  2288             table += 4;

  2289             append("  case " + low).append(":"); goTo(this, i, offset, topMostLabel); append('\n');

  2290             low++;

  2291         }

  2292         append("  default: ");

  2293         goTo(this, i, dflt, topMostLabel);

  2294         append("\n}");

  2295         i = table - 1;

  2296         return i;

  2297     }

  2299     private int generateLookupSwitch(int i, final byte[] byteCodes, final StackMapper smapper, int topMostLabel) throws IOException {

  2300         int table = i / 4 * 4 + 4;

  2301         int dflt = i + readInt4(byteCodes, table);

  2302         table += 4;

  2303         int n = readInt4(byteCodes, table);

  2304         table += 4;

  2305         final CharSequence swVar = smapper.popValue();

  2306         smapper.flush(this);

  2307         append("switch (").append(swVar).append(") {\n");

  2308         while (n-- > 0) {

  2309             int cnstnt = readInt4(byteCodes, table);

  2310             table += 4;

  2311             int offset = i + readInt4(byteCodes, table);

  2312             table += 4;

  2313             append("  case " + cnstnt).append(": "); goTo(this, i, offset, topMostLabel); append('\n');

  2314         }

  2315         append("  default: ");

  2316         goTo(this, i, dflt, topMostLabel);

  2317         append("\n}");

  2318         i = table - 1;

  2319         return i;

  2320     }

  2322     private void generateInstanceOf(int indx, final StackMapper smapper) throws IOException {

  2323         String type = jc.getClassName(indx);

  2324         if (!type.startsWith("[")) {

  2325             emit(smapper, this,

  2326                     "var @2 = @1 != null && @1['$instOf_@3'] ? 1 : 0;",

  2327                  smapper.popA(), smapper.pushI(),

  2328                  type.replace('/', '_'));

  2329         } else {

  2330             int cnt = 0;

  2331             while (type.charAt(cnt) == '[') {

  2332                 cnt++;

  2333             }

  2334             if (type.charAt(cnt) == 'L') {

  2335                 type = "vm." + mangleClassName(type.substring(cnt + 1, type.length() - 1));

  2336                 emit(smapper, this,

  2337                     "var @2 = Array.prototype['isInstance__ZLjava_lang_Object_2ILjava_lang_Object_2'](@1, @4, @3);",

  2338                     smapper.popA(), smapper.pushI(),

  2339                     type, "" + cnt

  2340                 );

  2341             } else {

  2342                 emit(smapper, this,

  2343                     "var @2 = Array.prototype['isInstance__ZLjava_lang_Object_2Ljava_lang_String_2'](@1, '@3');",

  2344                     smapper.popA(), smapper.pushI(), type

  2345                 );

  2346             }

  2347         }

  2348     }

  2350     private void generateCheckcast(int indx, final StackMapper smapper) throws IOException {

  2351         String type = jc.getClassName(indx);

  2352         if (!type.startsWith("[")) {

  2353             emitNoFlush(smapper,

  2354                  "if (@1 !== null && !@1['$instOf_@2']) throw vm.java_lang_ClassCastException(true);",

  2355                  smapper.getT(0, VarType.REFERENCE, false), type.replace('/', '_'));

  2356         } else {

  2357             int cnt = 0;

  2358             while (type.charAt(cnt) == '[') {

  2359                 cnt++;

  2360             }

  2361             if (type.charAt(cnt) == 'L') {

  2362                 type = "vm." + mangleClassName(type.substring(cnt + 1, type.length() - 1));

  2363                 emitNoFlush(smapper,

  2364                     "if (@1 !== null && !Array.prototype['isInstance__ZLjava_lang_Object_2ILjava_lang_Object_2'](@1, @3, @2)) throw vm.java_lang_ClassCastException(true);",

  2365                      smapper.getT(0, VarType.REFERENCE, false), type, "" + cnt

  2366                 );

  2367             } else {

  2368                 emitNoFlush(smapper,

  2369                     "if (@1 !== null && !Array.prototype['isInstance__ZLjava_lang_Object_2Ljava_lang_String_2'](@1, '@2')) throw vm.java_lang_ClassCastException(true);",

  2370                      smapper.getT(0, VarType.REFERENCE, false), type

  2371                 );

  2372             }

  2373         }

  2374     }

  2376     private void generateByteCodeComment(int prev, int i, final byte[] byteCodes) throws IOException {

  2377         for (int j = prev; j <= i; j++) {

  2378             append(" ");

  2379             final int cc = readUByte(byteCodes, j);

  2380             append(Integer.toString(cc));

  2381         }

  2382     }

  2384     @JavaScriptBody(args = "msg", body = "")

  2385     private static void println(String msg) {

  2386         System.err.println(msg);

  2387     }

  2388 }

author	Jaroslav Tulach <jaroslav.tulach@apidesign.org>
	Fri, 26 Sep 2014 09:21:49 +0200
changeset 1706	65c6f805797f
parent 1704	2e69145b9feb
child 1722	fd3a354d6e8f
permissions	-rw-r--r--