hg/bck2brwsr: rt/vm/src/main/java/org/apidesign/vm4brwsr/ByteCodeToJavaScript.java@ce34fdc36fac

     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 CLS = ").append(className).append(';');

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

   194         if (proto == null) {

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

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

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

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

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

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

   201         } else {

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

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

   204                 proto[0] = "p";

   205             }

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

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

   208         }

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

   210             if (v.isStatic()) {

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

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

   213                         continue;

   214                     }

   215                 }

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

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

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

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

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

   221             } else {

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

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

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

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

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

   227                    .append("; };");

   228             }

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

   231         }

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

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

   234             if (javaScriptOnly(onlyArr)) continue;

   235             String destObject;

   236             String mn;

   237             append("\n    ");

   238             if (m.isStatic()) {

   239                 destObject = "c";

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

   241             } else {

   242                 if (m.isConstructor()) {

   243                     destObject = "CLS";

   244                     mn = generateInstanceMethod(destObject, m);

   245                 } else {

   246                     destObject = "c";

   247                     mn = generateInstanceMethod(destObject, m);

   248                 }

   249             }

   250             declaredMethod(m, destObject, mn);

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

   252             if (runAnno != null) {

   253                 append("\n    ").append(destObject).append(".").append(mn).append(".anno = {");

   254                 generateAnno(jc, runAnno);

   255                 append("\n    };");

   256             }

   257             append("\n    ").append(destObject).append(".").append(mn).append(".access = " + m.getAccess()).append(";");

   258             append("\n    ").append(destObject).append(".").append(mn).append(".cls = CLS;");

   259         }

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

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

   262         String instOfName = "$instOf_" + className;

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

   264         if (jc.isInterface()) {

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

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

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

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

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

   270                     append("\n        try {");

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

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

   273                     append("\n        }");

   274                 }

   275             }

   276         }

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

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

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

   280             requireReference(superInterface);

   281         }

   282         append("\n    }");

   283         append("\n    try {");

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

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

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

   287         append("\n    }");

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

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

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

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

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

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

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

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

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

   297         if (classAnno != null) {

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

   299             generateAnno(jc, classAnno);

   300             append("\n    };");

   301         }

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

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

   304         }

   305         append("\n  }");

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

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

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

   309         append("\n    }");

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

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

   312             if (javaScriptOnly(onlyArr)) continue;

   313             if (!v.isStatic()) {

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

   315                     append(className).append('_').

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

   317             }

   318         }

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

   320         append("\n  }");

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

   322         append("\n};");

   324         declaredClass(jc, className);

   326 //        StringBuilder sb = new StringBuilder();

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

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

   329 //        }

   330         return "";

   331     }

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

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

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

   336             "name", "value"

   337         );

   338         if (only != null) {

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

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

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

   342             }

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

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

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

   346             }

   347             return true;

   348         }

   349         return false;

   350     }

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

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

   353         if (jsb != null) {

   354             return jsb;

   355         }

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

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

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

   359         }

   360         generateMethod(destObject, mn, m);

   361         return mn;

   362     }

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

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

   366         if (jsb != null) {

   367             return jsb;

   368         }

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

   370         generateMethod(destObject, mn, m);

   371         return mn;

   372     }

   374     private void generateMethod(String destObject, String name, MethodData m)

   375             throws IOException {

   376         final StackMapIterator stackMapIterator = m.createStackMapIterator();

   377         TrapDataIterator trap = m.getTrapDataIterator();

   378         final LocalsMapper lmapper =

   379                 new LocalsMapper(stackMapIterator.getArguments());

   381         boolean obj = "java/lang/Object".equals(jc.getClassName());

   383         if (obj) {

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

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

   386         } else {

   387             append(destObject).append(".").append(name).append(" = function(");

   388         }

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

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

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

   393         if (byteCodes == null) {

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

   395                .append(jc.getClassName()).append('.')

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

   397             if (obj) {

   398                 append("}");

   399             }

   400             append("};");

   401             return;

   402         }

   404         final StackMapper smapper = new StackMapper();

   406         if (!m.isStatic()) {

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

   408         }

   410         int lastStackFrame;

   411         TrapData[] previousTrap = null;

   412         boolean wide = false;

   413         boolean didBranches;

   414         if (stackMapIterator.isEmpty()) {

   415             didBranches = false;

   416             lastStackFrame = 0;

   417         } else {

   418             didBranches = true;

   419             lastStackFrame = -1;

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

   421         }

   423         int openBraces = 0;

   424         int topMostLabel = 0;

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

   426             int prev = i;

   427             outChanged = false;

   428             stackMapIterator.advanceTo(i);

   429             boolean changeInCatch = trap.advanceTo(i);

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

   431                 if (previousTrap != null) {

   432                     generateCatch(previousTrap, i, topMostLabel);

   433                     previousTrap = null;

   434                 }

   435             }

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

   437                 smapper.flush(this);

   438                 if (i != 0) {

   439                     append("    }\n");

   440                 }

   441                 if (openBraces > 64) {

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

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

   444                     }

   445                     openBraces = 1;

   446                     topMostLabel = i;

   447                 }

   449                 lastStackFrame = stackMapIterator.getFrameIndex();

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

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

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

   453                 openBraces++;

   454                 changeInCatch = true;

   455             } else {

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

   457             }

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

   459                 append("try {");

   460                 previousTrap = trap.current();

   461             }

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

   463             switch (c) {

   464                 case opc_aload_0:

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

   466                     break;

   467                 case opc_iload_0:

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

   469                     break;

   470                 case opc_lload_0:

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

   472                     break;

   473                 case opc_fload_0:

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

   475                     break;

   476                 case opc_dload_0:

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

   478                     break;

   479                 case opc_aload_1:

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

   481                     break;

   482                 case opc_iload_1:

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

   484                     break;

   485                 case opc_lload_1:

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

   487                     break;

   488                 case opc_fload_1:

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

   490                     break;

   491                 case opc_dload_1:

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

   493                     break;

   494                 case opc_aload_2:

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

   496                     break;

   497                 case opc_iload_2:

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

   499                     break;

   500                 case opc_lload_2:

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

   502                     break;

   503                 case opc_fload_2:

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

   505                     break;

   506                 case opc_dload_2:

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

   508                     break;

   509                 case opc_aload_3:

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

   511                     break;

   512                 case opc_iload_3:

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

   514                     break;

   515                 case opc_lload_3:

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

   517                     break;

   518                 case opc_fload_3:

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

   520                     break;

   521                 case opc_dload_3:

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

   523                     break;

   524                 case opc_iload: {

   525                     ++i;

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

   527                                           : readUByte(byteCodes, i);

   528                     wide = false;

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

   530                     break;

   531                 }

   532                 case opc_lload: {

   533                     ++i;

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

   535                                           : readUByte(byteCodes, i);

   536                     wide = false;

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

   538                     break;

   539                 }

   540                 case opc_fload: {

   541                     ++i;

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

   543                                           : readUByte(byteCodes, i);

   544                     wide = false;

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

   546                     break;

   547                 }

   548                 case opc_dload: {

   549                     ++i;

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

   551                                           : readUByte(byteCodes, i);

   552                     wide = false;

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

   554                     break;

   555                 }

   556                 case opc_aload: {

   557                     ++i;

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

   559                                           : readUByte(byteCodes, i);

   560                     wide = false;

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

   562                     break;

   563                 }

   564                 case opc_istore: {

   565                     ++i;

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

   567                                           : readUByte(byteCodes, i);

   568                     wide = false;

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

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

   571                     break;

   572                 }

   573                 case opc_lstore: {

   574                     ++i;

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

   576                                           : readUByte(byteCodes, i);

   577                     wide = false;

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

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

   580                     break;

   581                 }

   582                 case opc_fstore: {

   583                     ++i;

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

   585                                           : readUByte(byteCodes, i);

   586                     wide = false;

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

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

   589                     break;

   590                 }

   591                 case opc_dstore: {

   592                     ++i;

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

   594                                           : readUByte(byteCodes, i);

   595                     wide = false;

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

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

   598                     break;

   599                 }

   600                 case opc_astore: {

   601                     ++i;

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

   603                                           : readUByte(byteCodes, i);

   604                     wide = false;

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

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

   607                     break;

   608                 }

   609                 case opc_astore_0:

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

   611                     break;

   612                 case opc_istore_0:

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

   614                     break;

   615                 case opc_lstore_0:

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

   617                     break;

   618                 case opc_fstore_0:

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

   620                     break;

   621                 case opc_dstore_0:

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

   623                     break;

   624                 case opc_astore_1:

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

   626                     break;

   627                 case opc_istore_1:

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

   629                     break;

   630                 case opc_lstore_1:

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

   632                     break;

   633                 case opc_fstore_1:

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

   635                     break;

   636                 case opc_dstore_1:

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

   638                     break;

   639                 case opc_astore_2:

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

   641                     break;

   642                 case opc_istore_2:

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

   644                     break;

   645                 case opc_lstore_2:

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

   647                     break;

   648                 case opc_fstore_2:

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

   650                     break;

   651                 case opc_dstore_2:

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

   653                     break;

   654                 case opc_astore_3:

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

   656                     break;

   657                 case opc_istore_3:

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

   659                     break;

   660                 case opc_lstore_3:

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

   662                     break;

   663                 case opc_fstore_3:

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

   665                     break;

   666                 case opc_dstore_3:

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

   668                     break;

   669                 case opc_iadd:

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

   671                     break;

   672                 case opc_ladd:

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

   674                     break;

   675                 case opc_fadd:

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

   677                     break;

   678                 case opc_dadd:

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

   680                     break;

   681                 case opc_isub:

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

   683                     break;

   684                 case opc_lsub:

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

   686                     break;

   687                 case opc_fsub:

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

   689                     break;

   690                 case opc_dsub:

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

   692                     break;

   693                 case opc_imul:

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

   695                     break;

   696                 case opc_lmul:

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

   698                     break;

   699                 case opc_fmul:

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

   701                     break;

   702                 case opc_dmul:

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

   704                     break;

   705                 case opc_idiv:

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

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

   708                     break;

   709                 case opc_ldiv:

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

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

   712                     break;

   713                 case opc_fdiv:

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

   715                     break;

   716                 case opc_ddiv:

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

   718                     break;

   719                 case opc_irem:

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

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

   722                     break;

   723                 case opc_lrem:

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

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

   726                     break;

   727                 case opc_frem:

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

   729                     break;

   730                 case opc_drem:

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

   732                     break;

   733                 case opc_iand:

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

   735                     break;

   736                 case opc_land:

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

   738                     break;

   739                 case opc_ior:

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

   741                     break;

   742                 case opc_lor:

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

   744                     break;

   745                 case opc_ixor:

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

   747                     break;

   748                 case opc_lxor:

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

   750                     break;

   751                 case opc_ineg:

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

   753                     break;

   754                 case opc_lneg:

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

   756                     break;

   757                 case opc_fneg:

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

   759                     break;

   760                 case opc_dneg:

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

   762                     break;

   763                 case opc_ishl:

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

   765                     break;

   766                 case opc_lshl:

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

   768                     break;

   769                 case opc_ishr:

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

   771                     break;

   772                 case opc_lshr:

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

   774                     break;

   775                 case opc_iushr:

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

   777                     break;

   778                 case opc_lushr:

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

   780                     break;

   781                 case opc_iinc: {

   782                     ++i;

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

   784                                              : readUByte(byteCodes, i);

   785                     ++i;

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

   787                                             : byteCodes[i];

   788                     wide = false;

   789                     if (incrBy == 1) {

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

   791                     } else {

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

   793                              lmapper.getI(varIndx),

   794                              Integer.toString(incrBy));

   795                     }

   796                     break;

   797                 }

   798                 case opc_return:

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

   800                     break;

   801                 case opc_ireturn:

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

   803                     break;

   804                 case opc_lreturn:

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

   806                     break;

   807                 case opc_freturn:

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

   809                     break;

   810                 case opc_dreturn:

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

   812                     break;

   813                 case opc_areturn:

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

   815                     break;

   816                 case opc_i2l:

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

   818                     break;

   819                 case opc_i2f:

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

   821                     break;

   822                 case opc_i2d:

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

   824                     break;

   825                 case opc_l2i:

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

   827                     break;

   828                     // max int check?

   829                 case opc_l2f:

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

   831                     break;

   832                 case opc_l2d:

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

   834                     break;

   835                 case opc_f2d:

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

   837                          smapper.getF(0));

   838                     break;

   839                 case opc_d2f:

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

   841                          smapper.getD(0));

   842                     break;

   843                 case opc_f2i:

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

   845                          smapper.getF(0));

   846                     break;

   847                 case opc_f2l:

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

   849                          smapper.getF(0));

   850                     break;

   851                 case opc_d2i:

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

   853                          smapper.getD(0));

   854                     break;

   855                 case opc_d2l:

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

   857                     break;

   858                 case opc_i2b:

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

   860                     break;

   861                 case opc_i2c:

   862                 case opc_i2s:

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

   864                     break;

   865                 case opc_aconst_null:

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

   867                     break;

   868                 case opc_iconst_m1:

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

   870                     break;

   871                 case opc_iconst_0:

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

   873                     break;

   874                 case opc_dconst_0:

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

   876                     break;

   877                 case opc_lconst_0:

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

   879                     break;

   880                 case opc_fconst_0:

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

   882                     break;

   883                 case opc_iconst_1:

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

   885                     break;

   886                 case opc_lconst_1:

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

   888                     break;

   889                 case opc_fconst_1:

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

   891                     break;

   892                 case opc_dconst_1:

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

   894                     break;

   895                 case opc_iconst_2:

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

   897                     break;

   898                 case opc_fconst_2:

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

   900                     break;

   901                 case opc_iconst_3:

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

   903                     break;

   904                 case opc_iconst_4:

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

   906                     break;

   907                 case opc_iconst_5:

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

   909                     break;

   910                 case opc_ldc: {

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

   912                     String v = encodeConstant(indx);

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

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

   915                     break;

   916                 }

   917                 case opc_ldc_w:

   918                 case opc_ldc2_w: {

   919                     int indx = readUShortArg(byteCodes, i);

   920                     i += 2;

   921                     String v = encodeConstant(indx);

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

   923                     if (type == VarType.LONG) {

   924                         final Long lv = new Long(v);

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

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

   927                         if (hi == 0) {

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

   929                         } else {

   930                             smapper.assign(this, VarType.LONG,

   931                                 "0x" + Integer.toHexString(hi) + ".next32(0x" +

   932                                     Integer.toHexString(low) + ")"

   933                             );

   934                         }

   935                     } else {

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

   937                     }

   938                     break;

   939                 }

   940                 case opc_lcmp:

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

   942                     break;

   943                 case opc_fcmpl:

   944                 case opc_fcmpg:

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

   946                     break;

   947                 case opc_dcmpl:

   948                 case opc_dcmpg:

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

   950                     break;

   951                 case opc_if_acmpeq:

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

   953                                    "===", topMostLabel);

   954                     break;

   955                 case opc_if_acmpne:

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

   957                                    "!==", topMostLabel);

   958                     break;

   959                 case opc_if_icmpeq:

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

   961                                    "==", topMostLabel);

   962                     break;

   963                 case opc_ifeq: {

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

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

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

   967                     i += 2;

   968                     break;

   969                 }

   970                 case opc_ifne: {

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

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

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

   974                     i += 2;

   975                     break;

   976                 }

   977                 case opc_iflt: {

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

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

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

   981                     i += 2;

   982                     break;

   983                 }

   984                 case opc_ifle: {

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

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

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

   988                     i += 2;

   989                     break;

   990                 }

   991                 case opc_ifgt: {

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

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

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

   995                     i += 2;

   996                     break;

   997                 }

   998                 case opc_ifge: {

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

  1000                     emitIf(smapper, this, "if ((@1) >= 0) ",

  1001                          smapper.popI(), i, indx, topMostLabel);

  1002                     i += 2;

  1003                     break;

  1004                 }

  1005                 case opc_ifnonnull: {

  1006                     int indx = i + readShortArg(byteCodes, i);

  1007                     emitIf(smapper, this, "if ((@1) !== null) ",

  1008                          smapper.popA(), i, indx, topMostLabel);

  1009                     i += 2;

  1010                     break;

  1011                 }

  1012                 case opc_ifnull: {

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

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

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

  1016                     i += 2;

  1017                     break;

  1018                 }

  1019                 case opc_if_icmpne:

  1020                     i = generateIf(smapper, byteCodes, i, smapper.popI(), smapper.popI(),

  1021                                    "!=", topMostLabel);

  1022                     break;

  1023                 case opc_if_icmplt:

  1024                     i = generateIf(smapper, byteCodes, i, smapper.popI(), smapper.popI(),

  1025                                    "<", topMostLabel);

  1026                     break;

  1027                 case opc_if_icmple:

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

  1029                                    "<=", topMostLabel);

  1030                     break;

  1031                 case opc_if_icmpgt:

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

  1033                                    ">", topMostLabel);

  1034                     break;

  1035                 case opc_if_icmpge:

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

  1037                                    ">=", topMostLabel);

  1038                     break;

  1039                 case opc_goto: {

  1040                     smapper.flush(this);

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

  1042                     goTo(this, i, indx, topMostLabel);

  1043                     i += 2;

  1044                     break;

  1045                 }

  1046                 case opc_lookupswitch: {

  1047                     i = generateLookupSwitch(i, byteCodes, smapper, topMostLabel);

  1048                     break;

  1049                 }

  1050                 case opc_tableswitch: {

  1051                     i = generateTableSwitch(i, byteCodes, smapper, topMostLabel);

  1052                     break;

  1053                 }

  1054                 case opc_invokeinterface: {

  1055                     i = invokeVirtualMethod(byteCodes, i, smapper) + 2;

  1056                     break;

  1057                 }

  1058                 case opc_invokevirtual:

  1059                     i = invokeVirtualMethod(byteCodes, i, smapper);

  1060                     break;

  1061                 case opc_invokespecial:

  1062                     i = invokeStaticMethod(byteCodes, i, smapper, false);

  1063                     break;

  1064                 case opc_invokestatic:

  1065                     i = invokeStaticMethod(byteCodes, i, smapper, true);

  1066                     break;

  1067                 case opc_invokedynamic: {

  1068                     int indx = readUShortArg(byteCodes, i);

  1069                     println("invoke dynamic: " + indx);

  1070                     ByteCodeParser.CPX2 c2 = jc.getCpoolEntry(indx);

  1071                     BootMethodData bm = jc.getBootMethod(c2.cpx1);

  1072                     CPX2 methodHandle = jc.getCpoolEntry(bm.method);

  1073                     println("  type: " + methodHandle.cpx1);

  1074                     String[] mi = jc.getFieldInfoName(methodHandle.cpx2);

  1075                     String mcn = mangleClassName(mi[0]);

  1076                     char[] returnType = {'V'};

  1077                     StringBuilder cnt = new StringBuilder();

  1078                     String mn = findMethodName(mi, cnt, returnType);

  1079                     StringBuilder sb = new StringBuilder();

  1080                     sb.append("We don't handle invokedynamic, need to preprocess ahead-of-time:\n");

  1081                     sb.append("  mi[0]: ").append(mi[0]).append("\n");

  1082                     sb.append("  mi[1]: ").append(mi[1]).append("\n");

  1083                     sb.append("  mi[2]: ").append(mi[2]).append("\n");

  1084                     sb.append("  mn   : ").append(mn).append("\n");

  1085                     sb.append("  name and type: ").append(jc.stringValue(c2.cpx2, true)).append("\n");

  1086                     throw new IOException(sb.toString());

  1087                     /*

  1088                     CPX2 nameAndType = jc.getCpoolEntry(c2.cpx2);

  1089                     String type = jc.StringValue(nameAndType.cpx2);

  1090                     String object = accessClass(mcn) + "(false)";

  1091                     if (mn.startsWith("cons_")) {

  1092                         object += ".constructor";

  1093                     }

  1094                     append("var metHan = ");

  1095                     append(accessStaticMethod(object, mn, mi));

  1096                     append('(');

  1097                     String lookup = accessClass("java_lang_invoke_MethodHandles") + "(false).findFor__Ljava_lang_invoke_MethodHandles$Lookup_2Ljava_lang_Class_2(CLS.$class)";

  1098                     append(lookup);

  1099                     append(", '").append(mi[1]).append("', ");

  1100                     String methodType = accessClass("java_lang_invoke_MethodType") + "(false).fromMethodDescriptorString__Ljava_lang_invoke_MethodType_2Ljava_lang_String_2Ljava_lang_ClassLoader_2(";

  1101                     append(methodType).append("'").append(type).append("', null)");

  1102 //                    if (numArguments > 0) {

  1103 //                        append(vars[0]);

  1104 //                        for (int j = 1; j < numArguments; ++j) {

  1105 //                            append(", ");

  1106 //                            append(vars[j]);

  1107 //                        }

  1108 //                    }

  1109                     append(");");

  1110                     emit(smapper, this, "throw 'Invoke dynamic: ' + @1 + ': ' + metHan;", "" + indx);

  1111                     i += 4;

  1112                     break;

  1113                     */

  1114                 }

  1115                 case opc_new: {

  1116                     int indx = readUShortArg(byteCodes, i);

  1117                     String ci = jc.getClassName(indx);

  1118                     emit(smapper, this, "var @1 = new @2;",

  1119                          smapper.pushA(), accessClass(mangleClassName(ci)));

  1120                     addReference(ci);

  1121                     i += 2;

  1122                     break;

  1123                 }

  1124                 case opc_newarray:

  1125                     int atype = readUByte(byteCodes, ++i);

  1126                     generateNewArray(atype, smapper);

  1127                     break;

  1128                 case opc_anewarray: {

  1129                     int type = readUShortArg(byteCodes, i);

  1130                     i += 2;

  1131                     generateANewArray(type, smapper);

  1132                     break;

  1133                 }

  1134                 case opc_multianewarray: {

  1135                     int type = readUShortArg(byteCodes, i);

  1136                     i += 2;

  1137                     i = generateMultiANewArray(type, byteCodes, i, smapper);

  1138                     break;

  1139                 }

  1140                 case opc_arraylength:

  1141                     smapper.replace(this, VarType.INTEGER, "(@1).length", smapper.getA(0));

  1142                     break;

  1143                 case opc_lastore:

  1144                     emit(smapper, this, "Array.at(@3, @2, @1);",

  1145                          smapper.popL(), smapper.popI(), smapper.popA());

  1146                     break;

  1147                 case opc_fastore:

  1148                     emit(smapper, this, "Array.at(@3, @2, @1);",

  1149                          smapper.popF(), smapper.popI(), smapper.popA());

  1150                     break;

  1151                 case opc_dastore:

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

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

  1154                     break;

  1155                 case opc_aastore:

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

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

  1158                     break;

  1159                 case opc_iastore:

  1160                 case opc_bastore:

  1161                 case opc_castore:

  1162                 case opc_sastore:

  1163                     emit(smapper, this, "Array.at(@3, @2, @1);",

  1164                          smapper.popI(), smapper.popI(), smapper.popA());

  1165                     break;

  1166                 case opc_laload:

  1167                     smapper.replace(this, VarType.LONG, "Array.at(@2, @1)",

  1168                          smapper.popI(), smapper.getA(0));

  1169                     break;

  1170                 case opc_faload:

  1171                     smapper.replace(this, VarType.FLOAT, "Array.at(@2, @1)",

  1172                          smapper.popI(), smapper.getA(0));

  1173                     break;

  1174                 case opc_daload:

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

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

  1177                     break;

  1178                 case opc_aaload:

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

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

  1181                     break;

  1182                 case opc_iaload:

  1183                 case opc_baload:

  1184                 case opc_caload:

  1185                 case opc_saload:

  1186                     smapper.replace(this, VarType.INTEGER, "Array.at(@2, @1)",

  1187                          smapper.popI(), smapper.getA(0));

  1188                     break;

  1189                 case opc_pop:

  1190                 case opc_pop2:

  1191                     smapper.pop(1);

  1192                     debug("/* pop */");

  1193                     break;

  1194                 case opc_dup: {

  1195                     final Variable v = smapper.get(0);

  1196                     if (smapper.isDirty()) {

  1197                         emit(smapper, this, "var @1 = @2;", smapper.pushT(v.getType()), v);

  1198                     } else {

  1199                         smapper.assign(this, v.getType(), v);

  1200                     }

  1201                     break;

  1202                 }

  1203                 case opc_dup2: {

  1204                     final Variable vi1 = smapper.get(0);

  1206                     if (vi1.isCategory2()) {

  1207                         emit(smapper, this, "var @1 = @2;",

  1208                              smapper.pushT(vi1.getType()), vi1);

  1209                     } else {

  1210                         final Variable vi2 = smapper.get(1);

  1211                         emit(smapper, this, "var @1 = @2, @3 = @4;",

  1212                              smapper.pushT(vi2.getType()), vi2,

  1213                              smapper.pushT(vi1.getType()), vi1);

  1214                     }

  1215                     break;

  1216                 }

  1217                 case opc_dup_x1: {

  1218                     final Variable vi1 = smapper.pop(this);

  1219                     final Variable vi2 = smapper.pop(this);

  1220                     final Variable vo3 = smapper.pushT(vi1.getType());

  1221                     final Variable vo2 = smapper.pushT(vi2.getType());

  1222                     final Variable vo1 = smapper.pushT(vi1.getType());

  1224                     emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6;",

  1225                          vo1, vi1, vo2, vi2, vo3, vo1);

  1226                     break;

  1227                 }

  1228                 case opc_dup2_x1: {

  1229                     final Variable vi1 = smapper.pop(this);

  1230                     final Variable vi2 = smapper.pop(this);

  1232                     if (vi1.isCategory2()) {

  1233                         final Variable vo3 = smapper.pushT(vi1.getType());

  1234                         final Variable vo2 = smapper.pushT(vi2.getType());

  1235                         final Variable vo1 = smapper.pushT(vi1.getType());

  1237                         emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6;",

  1238                              vo1, vi1, vo2, vi2, vo3, vo1);

  1239                     } else {

  1240                         final Variable vi3 = smapper.pop(this);

  1241                         final Variable vo5 = smapper.pushT(vi2.getType());

  1242                         final Variable vo4 = smapper.pushT(vi1.getType());

  1243                         final Variable vo3 = smapper.pushT(vi3.getType());

  1244                         final Variable vo2 = smapper.pushT(vi2.getType());

  1245                         final Variable vo1 = smapper.pushT(vi1.getType());

  1247                         emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6,",

  1248                              vo1, vi1, vo2, vi2, vo3, vi3);

  1249                         emit(smapper, this, " @1 = @2, @3 = @4;",

  1250                              vo4, vo1, vo5, vo2);

  1251                     }

  1252                     break;

  1253                 }

  1254                 case opc_dup_x2: {

  1255                     final Variable vi1 = smapper.pop(this);

  1256                     final Variable vi2 = smapper.pop(this);

  1258                     if (vi2.isCategory2()) {

  1259                         final Variable vo3 = smapper.pushT(vi1.getType());

  1260                         final Variable vo2 = smapper.pushT(vi2.getType());

  1261                         final Variable vo1 = smapper.pushT(vi1.getType());

  1263                         emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6;",

  1264                              vo1, vi1, vo2, vi2, vo3, vo1);

  1265                     } else {

  1266                         final Variable vi3 = smapper.pop(this);

  1267                         final Variable vo4 = smapper.pushT(vi1.getType());

  1268                         final Variable vo3 = smapper.pushT(vi3.getType());

  1269                         final Variable vo2 = smapper.pushT(vi2.getType());

  1270                         final Variable vo1 = smapper.pushT(vi1.getType());

  1272                         emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6, @7 = @8;",

  1273                              vo1, vi1, vo2, vi2, vo3, vi3, vo4, vo1);

  1274                     }

  1275                     break;

  1276                 }

  1277                 case opc_dup2_x2: {

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

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

  1281                     if (vi1.isCategory2()) {

  1282                         if (vi2.isCategory2()) {

  1283                             final Variable vo3 = smapper.pushT(vi1.getType());

  1284                             final Variable vo2 = smapper.pushT(vi2.getType());

  1285                             final Variable vo1 = smapper.pushT(vi1.getType());

  1287                             emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6;",

  1288                                  vo1, vi1, vo2, vi2, vo3, vo1);

  1289                         } else {

  1290                             final Variable vi3 = smapper.pop(this);

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

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

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

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

  1296                             emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6, @7 = @8;",

  1297                                  vo1, vi1, vo2, vi2, vo3, vi3, vo4, vo1);

  1298                         }

  1299                     } else {

  1300                         final Variable vi3 = smapper.pop(this);

  1302                         if (vi3.isCategory2()) {

  1303                             final Variable vo5 = smapper.pushT(vi2.getType());

  1304                             final Variable vo4 = smapper.pushT(vi1.getType());

  1305                             final Variable vo3 = smapper.pushT(vi3.getType());

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

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

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

  1310                                  vo1, vi1, vo2, vi2, vo3, vi3);

  1311                             emit(smapper, this, " @1 = @2, @3 = @4;",

  1312                                  vo4, vo1, vo5, vo2);

  1313                         } else {

  1314                             final Variable vi4 = smapper.pop(this);

  1315                             final Variable vo6 = smapper.pushT(vi2.getType());

  1316                             final Variable vo5 = smapper.pushT(vi1.getType());

  1317                             final Variable vo4 = smapper.pushT(vi4.getType());

  1318                             final Variable vo3 = smapper.pushT(vi3.getType());

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

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

  1322                             emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6, @7 = @8,",

  1323                                  vo1, vi1, vo2, vi2, vo3, vi3, vo4, vi4);

  1324                             emit(smapper, this, " @1 = @2, @3 = @4;",

  1325                                  vo5, vo1, vo6, vo2);

  1326                         }

  1327                     }

  1328                     break;

  1329                 }

  1330                 case opc_swap: {

  1331                     final Variable vi1 = smapper.get(0);

  1332                     final Variable vi2 = smapper.get(1);

  1334                     if (vi1.getType() == vi2.getType()) {

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

  1337                         emit(smapper, this, "var @1 = @2, @2 = @3, @3 = @1;",

  1338                              tmp, vi1, vi2);

  1339                         smapper.pop(1);

  1340                     } else {

  1341                         smapper.pop(2);

  1342                         smapper.pushT(vi1.getType());

  1343                         smapper.pushT(vi2.getType());

  1344                     }

  1345                     break;

  1346                 }

  1347                 case opc_bipush:

  1348                     smapper.assign(this, VarType.INTEGER,

  1349                         "(" + Integer.toString(byteCodes[++i]) + ")");

  1350                     break;

  1351                 case opc_sipush:

  1352                     smapper.assign(this, VarType.INTEGER,

  1353                         "(" + Integer.toString(readShortArg(byteCodes, i)) + ")"

  1354                     );

  1355                     i += 2;

  1356                     break;

  1357                 case opc_getfield: {

  1358                     int indx = readUShortArg(byteCodes, i);

  1359                     String[] fi = jc.getFieldInfoName(indx);

  1360                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1361                     final String mangleClass = mangleClassName(fi[0]);

  1362                     final String mangleClassAccess = accessClass(mangleClass);

  1363                     smapper.replace(this, type, "@2.call(@1)",

  1364                          smapper.getA(0),

  1365                          accessField(mangleClassAccess + "(false)",

  1366                                      "_" + fi[1], fi)

  1367                     );

  1368                     i += 2;

  1369                     break;

  1370                 }

  1371                 case opc_putfield: {

  1372                     int indx = readUShortArg(byteCodes, i);

  1373                     String[] fi = jc.getFieldInfoName(indx);

  1374                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1375                     final String mangleClass = mangleClassName(fi[0]);

  1376                     final String mangleClassAccess = accessClass(mangleClass);

  1377                     emit(smapper, this, "@3.call(@2, @1);",

  1378                          smapper.popT(type),

  1379                          smapper.popA(),

  1380                          accessField(mangleClassAccess + "(false)",

  1381                                      "_" + fi[1], fi));

  1382                     i += 2;

  1383                     break;

  1384                 }

  1385                 case opc_getstatic: {

  1386                     int indx = readUShortArg(byteCodes, i);

  1387                     String[] fi = jc.getFieldInfoName(indx);

  1388                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1389                     String ac = accessClass(mangleClassName(fi[0]));

  1390                     String af = accessField(ac + "(false)", "_" + fi[1], fi);

  1391                     smapper.assign(this, type, af + "()");

  1392                     i += 2;

  1393                     addReference(fi[0]);

  1394                     break;

  1395                 }

  1396                 case opc_putstatic: {

  1397                     int indx = readUShortArg(byteCodes, i);

  1398                     String[] fi = jc.getFieldInfoName(indx);

  1399                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1400                     emit(smapper, this, "@1(false)._@2(@3);",

  1401                          accessClass(mangleClassName(fi[0])), fi[1],

  1402                          smapper.popT(type));

  1403                     i += 2;

  1404                     addReference(fi[0]);

  1405                     break;

  1406                 }

  1407                 case opc_checkcast: {

  1408                     int indx = readUShortArg(byteCodes, i);

  1409                     generateCheckcast(indx, smapper);

  1410                     i += 2;

  1411                     break;

  1412                 }

  1413                 case opc_instanceof: {

  1414                     int indx = readUShortArg(byteCodes, i);

  1415                     generateInstanceOf(indx, smapper);

  1416                     i += 2;

  1417                     break;

  1418                 }

  1419                 case opc_athrow: {

  1420                     final CharSequence v = smapper.popA();

  1421                     smapper.clear();

  1423                     emit(smapper, this, "{ var @1 = @2; throw @2; }",

  1424                          smapper.pushA(), v);

  1425                     break;

  1426                 }

  1428                 case opc_monitorenter: {

  1429                     debug("/* monitor enter */");

  1430                     smapper.popA();

  1431                     break;

  1432                 }

  1434                 case opc_monitorexit: {

  1435                     debug("/* monitor exit */");

  1436                     smapper.popA();

  1437                     break;

  1438                 }

  1440                 case opc_wide:

  1441                     wide = true;

  1442                     break;

  1444                 default: {

  1445                     wide = false;

  1446                     emit(smapper, this, "throw 'unknown bytecode @1';",

  1447                          Integer.toString(c));

  1448                 }

  1449             }

  1450             if (debug(" //")) {

  1451                 generateByteCodeComment(prev, i, byteCodes);

  1452             }

  1453             if (outChanged) {

  1454                 append("\n");

  1455             }

  1456         }

  1457         if (previousTrap != null) {

  1458             generateCatch(previousTrap, byteCodes.length, topMostLabel);

  1459         }

  1460         if (didBranches) {

  1461             append("\n    }\n");

  1462         }

  1463         while (openBraces-- > 0) {

  1464             append('}');

  1465         }

  1466         if (obj) {

  1467             append("\n}});");

  1468         } else {

  1469             append("\n};");

  1470         }

  1471     }

  1473     private int generateIf(StackMapper mapper, byte[] byteCodes,

  1474         int i, final CharSequence v2, final CharSequence v1,

  1475         final String test, int topMostLabel

  1476     ) throws IOException {

  1477         mapper.flush(this);

  1478         int indx = i + readShortArg(byteCodes, i);

  1479         append("if ((").append(v1)

  1480            .append(") ").append(test).append(" (")

  1481            .append(v2).append(")) ");

  1482         goTo(this, i, indx, topMostLabel);

  1483         return i + 2;

  1484     }

  1486     private int readInt4(byte[] byteCodes, int offset) {

  1487         final int d = byteCodes[offset + 0] << 24;

  1488         final int c = byteCodes[offset + 1] << 16;

  1489         final int b = byteCodes[offset + 2] << 8;

  1490         final int a = byteCodes[offset + 3];

  1491         return (d & 0xff000000) | (c & 0xff0000) | (b & 0xff00) | (a & 0xff);

  1492     }

  1493     private static int readUByte(byte[] byteCodes, int offset) {

  1494         return byteCodes[offset] & 0xff;

  1495     }

  1497     private static int readUShort(byte[] byteCodes, int offset) {

  1498         return ((byteCodes[offset] & 0xff) << 8)

  1499                     | (byteCodes[offset + 1] & 0xff);

  1500     }

  1501     private static int readUShortArg(byte[] byteCodes, int offsetInstruction) {

  1502         return readUShort(byteCodes, offsetInstruction + 1);

  1503     }

  1505     private static int readShort(byte[] byteCodes, int offset) {

  1506         int signed = byteCodes[offset];

  1507         byte b0 = (byte)signed;

  1508         return (b0 << 8) | (byteCodes[offset + 1] & 0xff);

  1509     }

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

  1511         return readShort(byteCodes, offsetInstruction + 1);

  1512     }

  1514     private static void countArgs(String descriptor, char[] returnType, StringBuilder sig, StringBuilder cnt) {

  1515         int i = 0;

  1516         Boolean count = null;

  1517         boolean array = false;

  1518         sig.append("__");

  1519         int firstPos = sig.length();

  1520         while (i < descriptor.length()) {

  1521             char ch = descriptor.charAt(i++);

  1522             switch (ch) {

  1523                 case '(':

  1524                     count = true;

  1525                     continue;

  1526                 case ')':

  1527                     count = false;

  1528                     continue;

  1529                 case 'B':

  1530                 case 'C':

  1531                 case 'D':

  1532                 case 'F':

  1533                 case 'I':

  1534                 case 'J':

  1535                 case 'S':

  1536                 case 'Z':

  1537                     if (count) {

  1538                         if (array) {

  1539                             sig.append("_3");

  1540                         }

  1541                         sig.append(ch);

  1542                         if (ch == 'J' || ch == 'D') {

  1543                             cnt.append('1');

  1544                         } else {

  1545                             cnt.append('0');

  1546                         }

  1547                     } else {

  1548                         sig.insert(firstPos, ch);

  1549                         if (array) {

  1550                             returnType[0] = '[';

  1551                             sig.insert(firstPos, "_3");

  1552                         } else {

  1553                             returnType[0] = ch;

  1554                         }

  1555                     }

  1556                     array = false;

  1557                     continue;

  1558                 case 'V':

  1559                     assert !count;

  1560                     returnType[0] = 'V';

  1561                     sig.insert(firstPos, 'V');

  1562                     continue;

  1563                 case 'L':

  1564                     int next = descriptor.indexOf(';', i);

  1565                     String realSig = mangleSig(descriptor, i - 1, next + 1);

  1566                     if (count) {

  1567                         if (array) {

  1568                             sig.append("_3");

  1569                         }

  1570                         sig.append(realSig);

  1571                         cnt.append('0');

  1572                     } else {

  1573                         sig.insert(firstPos, realSig);

  1574                         if (array) {

  1575                             sig.insert(firstPos, "_3");

  1576                         }

  1577                         returnType[0] = 'L';

  1578                     }

  1579                     i = next + 1;

  1580                     array = false;

  1581                     continue;

  1582                 case '[':

  1583                     array = true;

  1584                     continue;

  1585                 default:

  1586                     throw new IllegalStateException("Invalid char: " + ch);

  1587             }

  1588         }

  1589     }

  1591     static String mangleSig(String sig) {

  1592         return mangleSig(sig, 0, sig.length());

  1593     }

  1595     private static String mangleMethodName(String name) {

  1596         StringBuilder sb = new StringBuilder(name.length() * 2);

  1597         int last = name.length();

  1598         for (int i = 0; i < last; i++) {

  1599             final char ch = name.charAt(i);

  1600             switch (ch) {

  1601                 case '_': sb.append("_1"); break;

  1602                 default: sb.append(ch); break;

  1603             }

  1604         }

  1605         return sb.toString();

  1606     }

  1607     private static String mangleSig(String txt, int first, int last) {

  1608         StringBuilder sb = new StringBuilder((last - first) * 2);

  1609         for (int i = first; i < last; i++) {

  1610             final char ch = txt.charAt(i);

  1611             switch (ch) {

  1612                 case '/': sb.append('_'); break;

  1613                 case '_': sb.append("_1"); break;

  1614                 case ';': sb.append("_2"); break;

  1615                 case '[': sb.append("_3"); break;

  1616                 default:

  1617                     if (Character.isJavaIdentifierPart(ch)) {

  1618                         sb.append(ch);

  1619                     } else {

  1620                         sb.append("_0");

  1621                         String hex = Integer.toHexString(ch).toLowerCase();

  1622                         for (int m = hex.length(); m < 4; m++) {

  1623                             sb.append("0");

  1624                         }

  1625                         sb.append(hex);

  1626                     }

  1627                 break;

  1628             }

  1629         }

  1630         return sb.toString();

  1631     }

  1633     private static String mangleClassName(String name) {

  1634         return mangleSig(name);

  1635     }

  1637     private static String findMethodName(MethodData m, StringBuilder cnt) {

  1638         StringBuilder name = new StringBuilder();

  1639         if ("<init>".equals(m.getName())) { // NOI18N

  1640             name.append("cons"); // NOI18N

  1641         } else if ("<clinit>".equals(m.getName())) { // NOI18N

  1642             name.append("class"); // NOI18N

  1643         } else {

  1644             name.append(mangleMethodName(m.getName()));

  1645         }

  1647         countArgs(m.getInternalSig(), new char[1], name, cnt);

  1648         return name.toString();

  1649     }

  1651     static String findMethodName(String[] mi, StringBuilder cnt, char[] returnType) {

  1652         StringBuilder name = new StringBuilder();

  1653         String descr = mi[2];//mi.getDescriptor();

  1654         String nm= mi[1];

  1655         if ("<init>".equals(nm)) { // NOI18N

  1656             name.append("cons"); // NOI18N

  1657         } else {

  1658             name.append(mangleMethodName(nm));

  1659         }

  1660         countArgs(descr, returnType, name, cnt);

  1661         return name.toString();

  1662     }

  1664     private int invokeStaticMethod(byte[] byteCodes, int i, final StackMapper mapper, boolean isStatic)

  1665     throws IOException {

  1666         int methodIndex = readUShortArg(byteCodes, i);

  1667         String[] mi = jc.getFieldInfoName(methodIndex);

  1668         char[] returnType = { 'V' };

  1669         StringBuilder cnt = new StringBuilder();

  1670         String mn = findMethodName(mi, cnt, returnType);

  1672         final int numArguments = isStatic ? cnt.length() : cnt.length() + 1;

  1673         final CharSequence[] vars = new CharSequence[numArguments];

  1675         for (int j = numArguments - 1; j >= 0; --j) {

  1676             vars[j] = mapper.popValue();

  1677         }

  1679         if (returnType[0] != 'V') {

  1680             mapper.flush(this);

  1681             append("var ")

  1682                .append(mapper.pushT(VarType.fromFieldType(returnType[0])))

  1683                .append(" = ");

  1684         }

  1686         final String in = mi[0];

  1687         String mcn;

  1688         if (callbacks && (

  1689             in.equals("org/apidesign/html/boot/spi/Fn") ||

  1690             in.equals("org/netbeans/html/boot/spi/Fn")

  1691         )) {

  1692             mcn = "java_lang_Class";

  1693         } else {

  1694             mcn = mangleClassName(in);

  1695         }

  1696         String object = accessClass(mcn) + "(false)";

  1697         if (mn.startsWith("cons_")) {

  1698             object += ".constructor";

  1699         }

  1700         append(accessStaticMethod(object, mn, mi));

  1701         if (isStatic) {

  1702             append('(');

  1703         } else {

  1704             append(".call(");

  1705         }

  1706         if (numArguments > 0) {

  1707             append(vars[0]);

  1708             for (int j = 1; j < numArguments; ++j) {

  1709                 append(", ");

  1710                 append(vars[j]);

  1711             }

  1712         }

  1713         append(");");

  1714         i += 2;

  1715         addReference(in);

  1716         return i;

  1717     }

  1718     private int invokeVirtualMethod(byte[] byteCodes, int i, final StackMapper mapper)

  1719     throws IOException {

  1720         int methodIndex = readUShortArg(byteCodes, i);

  1721         String[] mi = jc.getFieldInfoName(methodIndex);

  1722         char[] returnType = { 'V' };

  1723         StringBuilder cnt = new StringBuilder();

  1724         String mn = findMethodName(mi, cnt, returnType);

  1726         final int numArguments = cnt.length() + 1;

  1727         final CharSequence[] vars =  new CharSequence[numArguments];

  1729         for (int j = numArguments - 1; j >= 0; --j) {

  1730             vars[j] = mapper.popValue();

  1731         }

  1733         if (returnType[0] != 'V') {

  1734             append("var ")

  1735                .append(mapper.pushT(VarType.fromFieldType(returnType[0])))

  1736                .append(" = ");

  1737         }

  1739         append(accessVirtualMethod(vars[0].toString(), mn, mi, numArguments));

  1740         String sep = "";

  1741         for (int j = 1; j < numArguments; ++j) {

  1742             append(sep);

  1743             append(vars[j]);

  1744             sep = ", ";

  1745         }

  1746         append(");");

  1747         i += 2;

  1748         return i;

  1749     }

  1751     private void addReference(String cn) throws IOException {

  1752         if (requireReference(cn)) {

  1753             debug(" /* needs " + cn + " */");

  1754         }

  1755     }

  1757     private void outType(String d, StringBuilder out) {

  1758         int arr = 0;

  1759         while (d.charAt(0) == '[') {

  1760             out.append('A');

  1761             d = d.substring(1);

  1762         }

  1763         if (d.charAt(0) == 'L') {

  1764             assert d.charAt(d.length() - 1) == ';';

  1765             out.append(d.replace('/', '_').substring(0, d.length() - 1));

  1766         } else {

  1767             out.append(d);

  1768         }

  1769     }

  1771     private String encodeConstant(int entryIndex) throws IOException {

  1772         String[] classRef = { null };

  1773         String s = jc.stringValue(entryIndex, classRef);

  1774         if (classRef[0] != null) {

  1775             if (classRef[0].startsWith("[")) {

  1776                 s = accessClass("java_lang_Class") + "(false)['forName__Ljava_lang_Class_2Ljava_lang_String_2']('" + classRef[0] + "')";

  1777             } else {

  1778                 addReference(classRef[0]);

  1779                 s = accessClass(mangleClassName(s)) + "(false).constructor.$class";

  1780             }

  1781         }

  1782         return s;

  1783     }

  1785     private String javaScriptBody(String destObject, MethodData m, boolean isStatic) throws IOException {

  1786         byte[] arr = m.findAnnotationData(true);

  1787         if (arr == null) {

  1788             return null;

  1789         }

  1790         final String jvmType = "Lorg/apidesign/bck2brwsr/core/JavaScriptBody;";

  1791         final String htmlType = "Lnet/java/html/js/JavaScriptBody;";

  1792         class P extends AnnotationParser {

  1793             public P() {

  1794                 super(false, true);

  1795             }

  1797             int cnt;

  1798             String[] args = new String[30];

  1799             String body;

  1800             boolean javacall;

  1801             boolean html4j;

  1803             @Override

  1804             protected void visitAttr(String type, String attr, String at, String value) {

  1805                 if (type.equals(jvmType)) {

  1806                     if ("body".equals(attr)) {

  1807                         body = value;

  1808                     } else if ("args".equals(attr)) {

  1809                         args[cnt++] = value;

  1810                     } else {

  1811                         throw new IllegalArgumentException(attr);

  1812                     }

  1813                 }

  1814                 if (type.equals(htmlType)) {

  1815                     html4j = true;

  1816                     if ("body".equals(attr)) {

  1817                         body = value;

  1818                     } else if ("args".equals(attr)) {

  1819                         args[cnt++] = value;

  1820                     } else if ("javacall".equals(attr)) {

  1821                         javacall = "1".equals(value);

  1822                     } else if ("wait4js".equals(attr)) {

  1823                         // ignore, we always invoke synchronously

  1824                     } else {

  1825                         throw new IllegalArgumentException(attr);

  1826                     }

  1827                 }

  1828             }

  1829         }

  1830         P p = new P();

  1831         p.parse(arr, jc);

  1832         if (p.body == null) {

  1833             return null;

  1834         }

  1835         StringBuilder cnt = new StringBuilder();

  1836         final String mn = findMethodName(m, cnt);

  1837         append(destObject).append(".").append(mn);

  1838         append(" = function(");

  1839         String space = "";

  1840         int index = 0;

  1841         StringBuilder toValue = new StringBuilder();

  1842         for (int i = 0; i < cnt.length(); i++) {

  1843             append(space);

  1844             space = outputArg(this, p.args, index);

  1845             if (p.html4j && space.length() > 0) {

  1846                 toValue.append("\n  ").append(p.args[index]).append(" = ")

  1847                     .append(accessClass("java_lang_Class")).append("(false).toJS(").

  1848                     append(p.args[index]).append(");");

  1849             }

  1850             index++;

  1851         }

  1852         append(") {").append("\n");

  1853         append(toValue.toString());

  1854         if (p.javacall) {

  1855             int lastSlash = jc.getClassName().lastIndexOf('/');

  1856             final String pkg = jc.getClassName().substring(0, lastSlash);

  1857             append(mangleCallbacks(pkg, p.body));

  1858             requireReference(pkg + "/$JsCallbacks$");

  1859         } else {

  1860             append(p.body);

  1861         }

  1862         append("\n}\n");

  1863         return mn;

  1864     }

  1866     private static CharSequence mangleCallbacks(String pkgName, String body) {

  1867         StringBuilder sb = new StringBuilder();

  1868         int pos = 0;

  1869         for (;;) {

  1870             int next = body.indexOf(".@", pos);

  1871             if (next == -1) {

  1872                 sb.append(body.substring(pos));

  1873                 body = sb.toString();

  1874                 break;

  1875             }

  1876             int ident = next;

  1877             while (ident > 0) {

  1878                 if (!Character.isJavaIdentifierPart(body.charAt(--ident))) {

  1879                     ident++;

  1880                     break;

  1881                 }

  1882             }

  1883             String refId = body.substring(ident, next);

  1885             sb.append(body.substring(pos, ident));

  1887             int sigBeg = body.indexOf('(', next);

  1888             int sigEnd = body.indexOf(')', sigBeg);

  1889             int colon4 = body.indexOf("::", next);

  1890             if (sigBeg == -1 || sigEnd == -1 || colon4 == -1) {

  1891                 throw new IllegalStateException("Malformed body " + body);

  1892             }

  1893             String fqn = body.substring(next + 2, colon4);

  1894             String method = body.substring(colon4 + 2, sigBeg);

  1895             String params = body.substring(sigBeg, sigEnd + 1);

  1897             int paramBeg = body.indexOf('(', sigEnd + 1);

  1899             sb.append("vm.").append(pkgName.replace('/', '_')).append("_$JsCallbacks$(false)._VM().");

  1900             sb.append(mangleJsCallbacks(fqn, method, params, false));

  1901             sb.append("(").append(refId);

  1902             if (body.charAt(paramBeg + 1) != ')') {

  1903                 sb.append(",");

  1904             }

  1905             pos = paramBeg + 1;

  1906         }

  1907         sb = null;

  1908         pos = 0;

  1909         for (;;) {

  1910             int next = body.indexOf("@", pos);

  1911             if (next == -1) {

  1912                 if (sb == null) {

  1913                     return body;

  1914                 }

  1915                 sb.append(body.substring(pos));

  1916                 return sb;

  1917             }

  1918             if (sb == null) {

  1919                 sb = new StringBuilder();

  1920             }

  1922             sb.append(body.substring(pos, next));

  1924             int sigBeg = body.indexOf('(', next);

  1925             int sigEnd = body.indexOf(')', sigBeg);

  1926             int colon4 = body.indexOf("::", next);

  1927             if (sigBeg == -1 || sigEnd == -1 || colon4 == -1) {

  1928                 throw new IllegalStateException("Malformed body " + body);

  1929             }

  1930             String fqn = body.substring(next + 1, colon4);

  1931             String method = body.substring(colon4 + 2, sigBeg);

  1932             String params = body.substring(sigBeg, sigEnd + 1);

  1934             int paramBeg = body.indexOf('(', sigEnd + 1);

  1936             sb.append("vm.").append(pkgName.replace('/', '_')).append("_$JsCallbacks$(false)._VM().");

  1937             sb.append(mangleJsCallbacks(fqn, method, params, true));

  1938             sb.append("(");

  1939             pos = paramBeg + 1;

  1940         }

  1941     }

  1943     static String mangleJsCallbacks(String fqn, String method, String params, boolean isStatic) {

  1944         if (params.startsWith("(")) {

  1945             params = params.substring(1);

  1946         }

  1947         if (params.endsWith(")")) {

  1948             params = params.substring(0, params.length() - 1);

  1949         }

  1950         StringBuilder sb = new StringBuilder();

  1951         final String fqnu = fqn.replace('.', '_');

  1952         final String rfqn = mangleClassName(fqnu);

  1953         final String rm = mangleMethodName(method);

  1954         final String srp;

  1955         {

  1956             StringBuilder pb = new StringBuilder();

  1957             int len = params.length();

  1958             int indx = 0;

  1959             while (indx < len) {

  1960                 char ch = params.charAt(indx);

  1961                 if (ch == '[' || ch == 'L') {

  1962                     pb.append("Ljava/lang/Object;");

  1963                     indx = params.indexOf(';', indx) + 1;

  1964                 } else {

  1965                     pb.append(ch);

  1966                     indx++;

  1967                 }

  1968             }

  1969             srp = mangleSig(pb.toString());

  1970         }

  1971         final String rp = mangleSig(params);

  1972         final String mrp = mangleMethodName(rp);

  1973         sb.append(rfqn).append("$").append(rm).

  1974             append('$').append(mrp).append("__Ljava_lang_Object_2");

  1975         if (!isStatic) {

  1976             sb.append('L').append(fqnu).append("_2");

  1977         }

  1978         sb.append(srp);

  1979         return sb.toString();

  1980     }

  1982     private static String className(ClassData jc) {

  1983         //return jc.getName().getInternalName().replace('/', '_');

  1984         return mangleClassName(jc.getClassName());

  1985     }

  1987     private static String[] findAnnotation(

  1988         byte[] arr, ClassData cd, final String className,

  1989         final String... attrNames

  1990     ) throws IOException {

  1991         if (arr == null) {

  1992             return null;

  1993         }

  1994         final String[] values = new String[attrNames.length];

  1995         final boolean[] found = { false };

  1996         final String jvmType = "L" + className.replace('.', '/') + ";";

  1997         AnnotationParser ap = new AnnotationParser(false, true) {

  1998             @Override

  1999             protected void visitAttr(String type, String attr, String at, String value) {

  2000                 if (type.equals(jvmType)) {

  2001                     found[0] = true;

  2002                     for (int i = 0; i < attrNames.length; i++) {

  2003                         if (attrNames[i].equals(attr)) {

  2004                             values[i] = value;

  2005                         }

  2006                     }

  2007                 }

  2008             }

  2010         };

  2011         ap.parse(arr, cd);

  2012         return found[0] ? values : null;

  2013     }

  2015     private CharSequence initField(FieldData v) {

  2016         final String is = v.getInternalSig();

  2017         if (is.length() == 1) {

  2018             switch (is.charAt(0)) {

  2019                 case 'S':

  2020                 case 'J':

  2021                 case 'B':

  2022                 case 'Z':

  2023                 case 'C':

  2024                 case 'I': return " = 0;";

  2025                 case 'F':

  2026                 case 'D': return " = 0.0;";

  2027                 default:

  2028                     throw new IllegalStateException(is);

  2029             }

  2030         }

  2031         return " = null;";

  2032     }

  2034     private void generateAnno(ClassData cd, byte[] data) throws IOException {

  2035         AnnotationParser ap = new AnnotationParser(true, false) {

  2036             int[] cnt = new int[32];

  2037             int depth;

  2039             @Override

  2040             protected void visitAnnotationStart(String attrType, boolean top) throws IOException {

  2041                 final String slashType = attrType.substring(1, attrType.length() - 1);

  2042                 requireReference(slashType);

  2044                 if (cnt[depth]++ > 0) {

  2045                     append(",");

  2046                 }

  2047                 if (top) {

  2048                     append('"').append(attrType).append("\" : ");

  2049                 }

  2050                 append("{\n");

  2051                 cnt[++depth] = 0;

  2052             }

  2054             @Override

  2055             protected void visitAnnotationEnd(String type, boolean top) throws IOException {

  2056                 append("\n}\n");

  2057                 depth--;

  2058             }

  2060             @Override

  2061             protected void visitValueStart(String attrName, char type) throws IOException {

  2062                 if (cnt[depth]++ > 0) {

  2063                     append(",\n");

  2064                 }

  2065                 cnt[++depth] = 0;

  2066                 if (attrName != null) {

  2067                     append('"').append(attrName).append("\" : ");

  2068                 }

  2069                 if (type == '[') {

  2070                     append("[");

  2071                 }

  2072             }

  2074             @Override

  2075             protected void visitValueEnd(String attrName, char type) throws IOException {

  2076                 if (type == '[') {

  2077                     append("]");

  2078                 }

  2079                 depth--;

  2080             }

  2082             @Override

  2083             protected void visitAttr(String type, String attr, String attrType, String value)

  2084             throws IOException {

  2085                 if (attr == null && value == null) {

  2086                     return;

  2087                 }

  2088                 append(value);

  2089             }

  2091             @Override

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

  2093             throws IOException {

  2094                 final String slashType = attrType.substring(1, attrType.length() - 1);

  2095                 requireReference(slashType);

  2097                 final String cn = mangleClassName(slashType);

  2098                 append(accessClass(cn))

  2099                    .append("(false)['valueOf__L").

  2100                     append(cn).

  2101                     append("_2Ljava_lang_String_2']('").

  2102                     append(value).

  2103                     append("')");

  2104             }

  2105         };

  2106         ap.parse(data, cd);

  2107     }

  2109     private static String outputArg(Appendable out, String[] args, int indx) throws IOException {

  2110         final String name = args[indx];

  2111         if (name == null) {

  2112             return "";

  2113         }

  2114         if (name.contains(",")) {

  2115             throw new IOException("Wrong parameter with ',': " + name);

  2116         }

  2117         out.append(name);

  2118         return ",";

  2119     }

  2121     final void emitNoFlush(

  2122         StackMapper sm,

  2123         final String format, final CharSequence... params

  2124     ) throws IOException {

  2125         emitImpl(this, format, params);

  2126     }

  2127     static final void emit(

  2128         StackMapper sm,

  2129         final Appendable out,

  2130         final String format, final CharSequence... params

  2131     ) throws IOException {

  2132         sm.flush(out);

  2133         emitImpl(out, format, params);

  2134     }

  2135     static void emitImpl(final Appendable out,

  2136                              final String format,

  2137                              final CharSequence... params) throws IOException {

  2138         final int length = format.length();

  2140         int processed = 0;

  2141         int paramOffset = format.indexOf('@');

  2142         while ((paramOffset != -1) && (paramOffset < (length - 1))) {

  2143             final char paramChar = format.charAt(paramOffset + 1);

  2144             if ((paramChar >= '1') && (paramChar <= '9')) {

  2145                 final int paramIndex = paramChar - '0' - 1;

  2147                 out.append(format, processed, paramOffset);

  2148                 out.append(params[paramIndex]);

  2150                 ++paramOffset;

  2151                 processed = paramOffset + 1;

  2152             }

  2154             paramOffset = format.indexOf('@', paramOffset + 1);

  2155         }

  2157         out.append(format, processed, length);

  2158     }

  2160     private void generateCatch(TrapData[] traps, int current, int topMostLabel) throws IOException {

  2161         append("} catch (e) {\n");

  2162         int finallyPC = -1;

  2163         for (TrapData e : traps) {

  2164             if (e == null) {

  2165                 break;

  2166             }

  2167             if (e.catch_cpx != 0) { //not finally

  2168                 final String classInternalName = jc.getClassName(e.catch_cpx);

  2169                 addReference(classInternalName);

  2170                 append("e = vm.java_lang_Class(false).bck2BrwsrThrwrbl(e);");

  2171                 append("if (e['$instOf_" + classInternalName.replace('/', '_') + "']) {");

  2172                 append("var stA0 = e;");

  2173                 goTo(this, current, e.handler_pc, topMostLabel);

  2174                 append("}\n");

  2175             } else {

  2176                 finallyPC = e.handler_pc;

  2177             }

  2178         }

  2179         if (finallyPC == -1) {

  2180             append("throw e;");

  2181         } else {

  2182             append("var stA0 = e;");

  2183             goTo(this, current, finallyPC, topMostLabel);

  2184         }

  2185         append("\n}");

  2186     }

  2188     private static void goTo(Appendable out, int current, int to, int canBack) throws IOException {

  2189         if (to < current) {

  2190             if (canBack < to) {

  2191                 out.append("{ gt = 0; continue X_" + to + "; }");

  2192             } else {

  2193                 out.append("{ gt = " + to + "; continue X_0; }");

  2194             }

  2195         } else {

  2196             out.append("{ gt = " + to + "; break IF; }");

  2197         }

  2198     }

  2200     private static void emitIf(

  2201         StackMapper sm,

  2202         Appendable out, String pattern,

  2203         CharSequence param,

  2204         int current, int to, int canBack

  2205     ) throws IOException {

  2206         sm.flush(out);

  2207         emitImpl(out, pattern, param);

  2208         goTo(out, current, to, canBack);

  2209     }

  2211     private void generateNewArray(int atype, final StackMapper smapper) throws IOException, IllegalStateException {

  2212         String jvmType;

  2213         switch (atype) {

  2214             case 4: jvmType = "[Z"; break;

  2215             case 5: jvmType = "[C"; break;

  2216             case 6: jvmType = "[F"; break;

  2217             case 7: jvmType = "[D"; break;

  2218             case 8: jvmType = "[B"; break;

  2219             case 9: jvmType = "[S"; break;

  2220             case 10: jvmType = "[I"; break;

  2221             case 11: jvmType = "[J"; break;

  2222             default: throw new IllegalStateException("Array type: " + atype);

  2223         }

  2224         emit(smapper, this,

  2225             "var @2 = Array.prototype['newArray__Ljava_lang_Object_2ZLjava_lang_String_2Ljava_lang_Object_2I'](true, '@3', null, @1);",

  2226              smapper.popI(), smapper.pushA(), jvmType);

  2227     }

  2229     private void generateANewArray(int type, final StackMapper smapper) throws IOException {

  2230         String typeName = jc.getClassName(type);

  2231         String ref = "null";

  2232         if (typeName.startsWith("[")) {

  2233             typeName = "'[" + typeName + "'";

  2234         } else {

  2235             ref = "vm." + mangleClassName(typeName);

  2236             typeName = "'[L" + typeName + ";'";

  2237         }

  2238         emit(smapper, this,

  2239             "var @2 = Array.prototype['newArray__Ljava_lang_Object_2ZLjava_lang_String_2Ljava_lang_Object_2I'](false, @3, @4, @1);",

  2240              smapper.popI(), smapper.pushA(), typeName, ref);

  2241     }

  2243     private int generateMultiANewArray(int type, final byte[] byteCodes, int i, final StackMapper smapper) throws IOException {

  2244         String typeName = jc.getClassName(type);

  2245         int dim = readUByte(byteCodes, ++i);

  2246         StringBuilder dims = new StringBuilder();

  2247         dims.append('[');

  2248         for (int d = 0; d < dim; d++) {

  2249             if (d != 0) {

  2250                 dims.insert(1, ",");

  2251             }

  2252             dims.insert(1, smapper.popI());

  2253         }

  2254         dims.append(']');

  2255         String fn = "null";

  2256         if (typeName.charAt(dim) == 'L') {

  2257             fn = "vm." + mangleClassName(typeName.substring(dim + 1, typeName.length() - 1));

  2258         }

  2259         emit(smapper, this,

  2260             "var @2 = Array.prototype['multiNewArray__Ljava_lang_Object_2Ljava_lang_String_2_3ILjava_lang_Object_2']('@3', @1, @4);",

  2261              dims.toString(), smapper.pushA(), typeName, fn

  2262         );

  2263         return i;

  2264     }

  2266     private int generateTableSwitch(int i, final byte[] byteCodes, final StackMapper smapper, int topMostLabel) throws IOException {

  2267         int table = i / 4 * 4 + 4;

  2268         int dflt = i + readInt4(byteCodes, table);

  2269         table += 4;

  2270         int low = readInt4(byteCodes, table);

  2271         table += 4;

  2272         int high = readInt4(byteCodes, table);

  2273         table += 4;

  2274         final CharSequence swVar = smapper.popValue();

  2275         smapper.flush(this);

  2276         append("switch (").append(swVar).append(") {\n");

  2277         while (low <= high) {

  2278             int offset = i + readInt4(byteCodes, table);

  2279             table += 4;

  2280             append("  case " + low).append(":"); goTo(this, i, offset, topMostLabel); append('\n');

  2281             low++;

  2282         }

  2283         append("  default: ");

  2284         goTo(this, i, dflt, topMostLabel);

  2285         append("\n}");

  2286         i = table - 1;

  2287         return i;

  2288     }

  2290     private int generateLookupSwitch(int i, final byte[] byteCodes, final StackMapper smapper, int topMostLabel) throws IOException {

  2291         int table = i / 4 * 4 + 4;

  2292         int dflt = i + readInt4(byteCodes, table);

  2293         table += 4;

  2294         int n = readInt4(byteCodes, table);

  2295         table += 4;

  2296         final CharSequence swVar = smapper.popValue();

  2297         smapper.flush(this);

  2298         append("switch (").append(swVar).append(") {\n");

  2299         while (n-- > 0) {

  2300             int cnstnt = readInt4(byteCodes, table);

  2301             table += 4;

  2302             int offset = i + readInt4(byteCodes, table);

  2303             table += 4;

  2304             append("  case " + cnstnt).append(": "); goTo(this, i, offset, topMostLabel); append('\n');

  2305         }

  2306         append("  default: ");

  2307         goTo(this, i, dflt, topMostLabel);

  2308         append("\n}");

  2309         i = table - 1;

  2310         return i;

  2311     }

  2313     private void generateInstanceOf(int indx, final StackMapper smapper) throws IOException {

  2314         String type = jc.getClassName(indx);

  2315         if (!type.startsWith("[")) {

  2316             emit(smapper, this,

  2317                     "var @2 = @1 != null && @1['$instOf_@3'] ? 1 : 0;",

  2318                  smapper.popA(), smapper.pushI(),

  2319                  type.replace('/', '_'));

  2320         } else {

  2321             int cnt = 0;

  2322             while (type.charAt(cnt) == '[') {

  2323                 cnt++;

  2324             }

  2325             if (type.charAt(cnt) == 'L') {

  2326                 type = "vm." + mangleClassName(type.substring(cnt + 1, type.length() - 1));

  2327                 emit(smapper, this,

  2328                     "var @2 = Array.prototype['isInstance__ZLjava_lang_Object_2ILjava_lang_Object_2'](@1, @4, @3);",

  2329                     smapper.popA(), smapper.pushI(),

  2330                     type, "" + cnt

  2331                 );

  2332             } else {

  2333                 emit(smapper, this,

  2334                     "var @2 = Array.prototype['isInstance__ZLjava_lang_Object_2Ljava_lang_String_2'](@1, '@3');",

  2335                     smapper.popA(), smapper.pushI(), type

  2336                 );

  2337             }

  2338         }

  2339     }

  2341     private void generateCheckcast(int indx, final StackMapper smapper) throws IOException {

  2342         String type = jc.getClassName(indx);

  2343         if (!type.startsWith("[")) {

  2344             emitNoFlush(smapper,

  2345                  "if (@1 !== null && !@1['$instOf_@2']) throw vm.java_lang_ClassCastException(true);",

  2346                  smapper.getT(0, VarType.REFERENCE, false), type.replace('/', '_'));

  2347         } else {

  2348             int cnt = 0;

  2349             while (type.charAt(cnt) == '[') {

  2350                 cnt++;

  2351             }

  2352             if (type.charAt(cnt) == 'L') {

  2353                 type = "vm." + mangleClassName(type.substring(cnt + 1, type.length() - 1));

  2354                 emitNoFlush(smapper,

  2355                     "if (@1 !== null && !Array.prototype['isInstance__ZLjava_lang_Object_2ILjava_lang_Object_2'](@1, @3, @2)) throw vm.java_lang_ClassCastException(true);",

  2356                      smapper.getT(0, VarType.REFERENCE, false), type, "" + cnt

  2357                 );

  2358             } else {

  2359                 emitNoFlush(smapper,

  2360                     "if (@1 !== null && !Array.prototype['isInstance__ZLjava_lang_Object_2Ljava_lang_String_2'](@1, '@2')) throw vm.java_lang_ClassCastException(true);",

  2361                      smapper.getT(0, VarType.REFERENCE, false), type

  2362                 );

  2363             }

  2364         }

  2365     }

  2367     private void generateByteCodeComment(int prev, int i, final byte[] byteCodes) throws IOException {

  2368         for (int j = prev; j <= i; j++) {

  2369             append(" ");

  2370             final int cc = readUByte(byteCodes, j);

  2371             append(Integer.toString(cc));

  2372         }

  2373     }

  2375     @JavaScriptBody(args = "msg", body = "")

  2376     private static void println(String msg) {

  2377         System.err.println(msg);

  2378     }

  2379 }

author	Jaroslav Tulach <jaroslav.tulach@apidesign.org>
	Sun, 14 Sep 2014 22:33:35 +0200
changeset 1696	ce34fdc36fac
parent 1688	e709c530c227
child 1702	228f26fc1159
permissions	-rw-r--r--