hg/bck2brwsr: rt/vm/src/main/java/org/apidesign/vm4brwsr/ByteCodeToJavaScript.java@63ca617c8101

     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                     println("  mi[0]: " + mi[0]);

  1080                     println("  mi[1]: " + mi[1]);

  1081                     println("  mi[2]: " + mi[2]);

  1082                     println("  mn   : " + mn);

  1083                     println("  name and type: " + jc.stringValue(c2.cpx2, true));

  1084                     CPX2 nameAndType = jc.getCpoolEntry(c2.cpx2);

  1085                     String type = jc.StringValue(nameAndType.cpx2);

  1086                     String object = accessClass(mcn) + "(false)";

  1087                     if (mn.startsWith("cons_")) {

  1088                         object += ".constructor";

  1089                     }

  1090                     append("var metHan = ");

  1091                     append(accessStaticMethod(object, mn, mi));

  1092                     append('(');

  1093                     String lookup = accessClass("java_lang_invoke_MethodHandles") + "(false).findFor__Ljava_lang_invoke_MethodHandles$Lookup_2Ljava_lang_Class_2(CLS.$class)";

  1094                     append(lookup);

  1095                     append(", '").append(mi[1]).append("', ");

  1096                     String methodType = accessClass("java_lang_invoke_MethodType") + "(false).fromMethodDescriptorString__Ljava_lang_invoke_MethodType_2Ljava_lang_String_2Ljava_lang_ClassLoader_2(";

  1097                     append(methodType).append("'").append(type).append("', null)");

  1098 //                    if (numArguments > 0) {

  1099 //                        append(vars[0]);

  1100 //                        for (int j = 1; j < numArguments; ++j) {

  1101 //                            append(", ");

  1102 //                            append(vars[j]);

  1103 //                        }

  1104 //                    }

  1105                     append(");");

  1106                     emit(smapper, this, "throw 'Invoke dynamic: ' + @1 + ': ' + metHan;", "" + indx);

  1107                     i += 4;

  1108                     break;

  1109                 }

  1110                 case opc_new: {

  1111                     int indx = readUShortArg(byteCodes, i);

  1112                     String ci = jc.getClassName(indx);

  1113                     emit(smapper, this, "var @1 = new @2;",

  1114                          smapper.pushA(), accessClass(mangleClassName(ci)));

  1115                     addReference(ci);

  1116                     i += 2;

  1117                     break;

  1118                 }

  1119                 case opc_newarray:

  1120                     int atype = readUByte(byteCodes, ++i);

  1121                     generateNewArray(atype, smapper);

  1122                     break;

  1123                 case opc_anewarray: {

  1124                     int type = readUShortArg(byteCodes, i);

  1125                     i += 2;

  1126                     generateANewArray(type, smapper);

  1127                     break;

  1128                 }

  1129                 case opc_multianewarray: {

  1130                     int type = readUShortArg(byteCodes, i);

  1131                     i += 2;

  1132                     i = generateMultiANewArray(type, byteCodes, i, smapper);

  1133                     break;

  1134                 }

  1135                 case opc_arraylength:

  1136                     smapper.replace(this, VarType.INTEGER, "(@1).length", smapper.getA(0));

  1137                     break;

  1138                 case opc_lastore:

  1139                     emit(smapper, this, "Array.at(@3, @2, @1);",

  1140                          smapper.popL(), smapper.popI(), smapper.popA());

  1141                     break;

  1142                 case opc_fastore:

  1143                     emit(smapper, this, "Array.at(@3, @2, @1);",

  1144                          smapper.popF(), smapper.popI(), smapper.popA());

  1145                     break;

  1146                 case opc_dastore:

  1147                     emit(smapper, this, "Array.at(@3, @2, @1);",

  1148                          smapper.popD(), smapper.popI(), smapper.popA());

  1149                     break;

  1150                 case opc_aastore:

  1151                     emit(smapper, this, "Array.at(@3, @2, @1);",

  1152                          smapper.popA(), smapper.popI(), smapper.popA());

  1153                     break;

  1154                 case opc_iastore:

  1155                 case opc_bastore:

  1156                 case opc_castore:

  1157                 case opc_sastore:

  1158                     emit(smapper, this, "Array.at(@3, @2, @1);",

  1159                          smapper.popI(), smapper.popI(), smapper.popA());

  1160                     break;

  1161                 case opc_laload:

  1162                     smapper.replace(this, VarType.LONG, "Array.at(@2, @1)",

  1163                          smapper.popI(), smapper.getA(0));

  1164                     break;

  1165                 case opc_faload:

  1166                     smapper.replace(this, VarType.FLOAT, "Array.at(@2, @1)",

  1167                          smapper.popI(), smapper.getA(0));

  1168                     break;

  1169                 case opc_daload:

  1170                     smapper.replace(this, VarType.DOUBLE, "Array.at(@2, @1)",

  1171                          smapper.popI(), smapper.getA(0));

  1172                     break;

  1173                 case opc_aaload:

  1174                     smapper.replace(this, VarType.REFERENCE, "Array.at(@2, @1)",

  1175                          smapper.popI(), smapper.getA(0));

  1176                     break;

  1177                 case opc_iaload:

  1178                 case opc_baload:

  1179                 case opc_caload:

  1180                 case opc_saload:

  1181                     smapper.replace(this, VarType.INTEGER, "Array.at(@2, @1)",

  1182                          smapper.popI(), smapper.getA(0));

  1183                     break;

  1184                 case opc_pop:

  1185                 case opc_pop2:

  1186                     smapper.pop(1);

  1187                     debug("/* pop */");

  1188                     break;

  1189                 case opc_dup: {

  1190                     final Variable v = smapper.get(0);

  1191                     if (smapper.isDirty()) {

  1192                         emit(smapper, this, "var @1 = @2;", smapper.pushT(v.getType()), v);

  1193                     } else {

  1194                         smapper.assign(this, v.getType(), v);

  1195                     }

  1196                     break;

  1197                 }

  1198                 case opc_dup2: {

  1199                     final Variable vi1 = smapper.get(0);

  1201                     if (vi1.isCategory2()) {

  1202                         emit(smapper, this, "var @1 = @2;",

  1203                              smapper.pushT(vi1.getType()), vi1);

  1204                     } else {

  1205                         final Variable vi2 = smapper.get(1);

  1206                         emit(smapper, this, "var @1 = @2, @3 = @4;",

  1207                              smapper.pushT(vi2.getType()), vi2,

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

  1209                     }

  1210                     break;

  1211                 }

  1212                 case opc_dup_x1: {

  1213                     final Variable vi1 = smapper.pop(this);

  1214                     final Variable vi2 = smapper.pop(this);

  1215                     final Variable vo3 = smapper.pushT(vi1.getType());

  1216                     final Variable vo2 = smapper.pushT(vi2.getType());

  1217                     final Variable vo1 = smapper.pushT(vi1.getType());

  1219                     emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6;",

  1220                          vo1, vi1, vo2, vi2, vo3, vo1);

  1221                     break;

  1222                 }

  1223                 case opc_dup2_x1: {

  1224                     final Variable vi1 = smapper.pop(this);

  1225                     final Variable vi2 = smapper.pop(this);

  1227                     if (vi1.isCategory2()) {

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

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

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

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

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

  1234                     } else {

  1235                         final Variable vi3 = smapper.pop(this);

  1236                         final Variable vo5 = smapper.pushT(vi2.getType());

  1237                         final Variable vo4 = smapper.pushT(vi1.getType());

  1238                         final Variable vo3 = smapper.pushT(vi3.getType());

  1239                         final Variable vo2 = smapper.pushT(vi2.getType());

  1240                         final Variable vo1 = smapper.pushT(vi1.getType());

  1242                         emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6,",

  1243                              vo1, vi1, vo2, vi2, vo3, vi3);

  1244                         emit(smapper, this, " @1 = @2, @3 = @4;",

  1245                              vo4, vo1, vo5, vo2);

  1246                     }

  1247                     break;

  1248                 }

  1249                 case opc_dup_x2: {

  1250                     final Variable vi1 = smapper.pop(this);

  1251                     final Variable vi2 = smapper.pop(this);

  1253                     if (vi2.isCategory2()) {

  1254                         final Variable vo3 = smapper.pushT(vi1.getType());

  1255                         final Variable vo2 = smapper.pushT(vi2.getType());

  1256                         final Variable vo1 = smapper.pushT(vi1.getType());

  1258                         emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6;",

  1259                              vo1, vi1, vo2, vi2, vo3, vo1);

  1260                     } else {

  1261                         final Variable vi3 = smapper.pop(this);

  1262                         final Variable vo4 = smapper.pushT(vi1.getType());

  1263                         final Variable vo3 = smapper.pushT(vi3.getType());

  1264                         final Variable vo2 = smapper.pushT(vi2.getType());

  1265                         final Variable vo1 = smapper.pushT(vi1.getType());

  1267                         emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6, @7 = @8;",

  1268                              vo1, vi1, vo2, vi2, vo3, vi3, vo4, vo1);

  1269                     }

  1270                     break;

  1271                 }

  1272                 case opc_dup2_x2: {

  1273                     final Variable vi1 = smapper.pop(this);

  1274                     final Variable vi2 = smapper.pop(this);

  1276                     if (vi1.isCategory2()) {

  1277                         if (vi2.isCategory2()) {

  1278                             final Variable vo3 = smapper.pushT(vi1.getType());

  1279                             final Variable vo2 = smapper.pushT(vi2.getType());

  1280                             final Variable vo1 = smapper.pushT(vi1.getType());

  1282                             emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6;",

  1283                                  vo1, vi1, vo2, vi2, vo3, vo1);

  1284                         } else {

  1285                             final Variable vi3 = smapper.pop(this);

  1286                             final Variable vo4 = smapper.pushT(vi1.getType());

  1287                             final Variable vo3 = smapper.pushT(vi3.getType());

  1288                             final Variable vo2 = smapper.pushT(vi2.getType());

  1289                             final Variable vo1 = smapper.pushT(vi1.getType());

  1291                             emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6, @7 = @8;",

  1292                                  vo1, vi1, vo2, vi2, vo3, vi3, vo4, vo1);

  1293                         }

  1294                     } else {

  1295                         final Variable vi3 = smapper.pop(this);

  1297                         if (vi3.isCategory2()) {

  1298                             final Variable vo5 = smapper.pushT(vi2.getType());

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

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

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

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

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

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

  1306                             emit(smapper, this, " @1 = @2, @3 = @4;",

  1307                                  vo4, vo1, vo5, vo2);

  1308                         } else {

  1309                             final Variable vi4 = smapper.pop(this);

  1310                             final Variable vo6 = smapper.pushT(vi2.getType());

  1311                             final Variable vo5 = smapper.pushT(vi1.getType());

  1312                             final Variable vo4 = smapper.pushT(vi4.getType());

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

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

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

  1317                             emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6, @7 = @8,",

  1318                                  vo1, vi1, vo2, vi2, vo3, vi3, vo4, vi4);

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

  1320                                  vo5, vo1, vo6, vo2);

  1321                         }

  1322                     }

  1323                     break;

  1324                 }

  1325                 case opc_swap: {

  1326                     final Variable vi1 = smapper.get(0);

  1327                     final Variable vi2 = smapper.get(1);

  1329                     if (vi1.getType() == vi2.getType()) {

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

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

  1333                              tmp, vi1, vi2);

  1334                         smapper.pop(1);

  1335                     } else {

  1336                         smapper.pop(2);

  1337                         smapper.pushT(vi1.getType());

  1338                         smapper.pushT(vi2.getType());

  1339                     }

  1340                     break;

  1341                 }

  1342                 case opc_bipush:

  1343                     smapper.assign(this, VarType.INTEGER,

  1344                         "(" + Integer.toString(byteCodes[++i]) + ")");

  1345                     break;

  1346                 case opc_sipush:

  1347                     smapper.assign(this, VarType.INTEGER,

  1348                         "(" + Integer.toString(readShortArg(byteCodes, i)) + ")"

  1349                     );

  1350                     i += 2;

  1351                     break;

  1352                 case opc_getfield: {

  1353                     int indx = readUShortArg(byteCodes, i);

  1354                     String[] fi = jc.getFieldInfoName(indx);

  1355                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1356                     final String mangleClass = mangleClassName(fi[0]);

  1357                     final String mangleClassAccess = accessClass(mangleClass);

  1358                     smapper.replace(this, type, "@2.call(@1)",

  1359                          smapper.getA(0),

  1360                          accessField(mangleClassAccess + "(false)",

  1361                                      "_" + fi[1], fi)

  1362                     );

  1363                     i += 2;

  1364                     break;

  1365                 }

  1366                 case opc_putfield: {

  1367                     int indx = readUShortArg(byteCodes, i);

  1368                     String[] fi = jc.getFieldInfoName(indx);

  1369                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1370                     final String mangleClass = mangleClassName(fi[0]);

  1371                     final String mangleClassAccess = accessClass(mangleClass);

  1372                     emit(smapper, this, "@3.call(@2, @1);",

  1373                          smapper.popT(type),

  1374                          smapper.popA(),

  1375                          accessField(mangleClassAccess + "(false)",

  1376                                      "_" + fi[1], fi));

  1377                     i += 2;

  1378                     break;

  1379                 }

  1380                 case opc_getstatic: {

  1381                     int indx = readUShortArg(byteCodes, i);

  1382                     String[] fi = jc.getFieldInfoName(indx);

  1383                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1384                     String ac = accessClass(mangleClassName(fi[0]));

  1385                     String af = accessField(ac + "(false)", "_" + fi[1], fi);

  1386                     smapper.assign(this, type, af + "()");

  1387                     i += 2;

  1388                     addReference(fi[0]);

  1389                     break;

  1390                 }

  1391                 case opc_putstatic: {

  1392                     int indx = readUShortArg(byteCodes, i);

  1393                     String[] fi = jc.getFieldInfoName(indx);

  1394                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1395                     emit(smapper, this, "@1(false)._@2(@3);",

  1396                          accessClass(mangleClassName(fi[0])), fi[1],

  1397                          smapper.popT(type));

  1398                     i += 2;

  1399                     addReference(fi[0]);

  1400                     break;

  1401                 }

  1402                 case opc_checkcast: {

  1403                     int indx = readUShortArg(byteCodes, i);

  1404                     generateCheckcast(indx, smapper);

  1405                     i += 2;

  1406                     break;

  1407                 }

  1408                 case opc_instanceof: {

  1409                     int indx = readUShortArg(byteCodes, i);

  1410                     generateInstanceOf(indx, smapper);

  1411                     i += 2;

  1412                     break;

  1413                 }

  1414                 case opc_athrow: {

  1415                     final CharSequence v = smapper.popA();

  1416                     smapper.clear();

  1418                     emit(smapper, this, "{ var @1 = @2; throw @2; }",

  1419                          smapper.pushA(), v);

  1420                     break;

  1421                 }

  1423                 case opc_monitorenter: {

  1424                     debug("/* monitor enter */");

  1425                     smapper.popA();

  1426                     break;

  1427                 }

  1429                 case opc_monitorexit: {

  1430                     debug("/* monitor exit */");

  1431                     smapper.popA();

  1432                     break;

  1433                 }

  1435                 case opc_wide:

  1436                     wide = true;

  1437                     break;

  1439                 default: {

  1440                     wide = false;

  1441                     emit(smapper, this, "throw 'unknown bytecode @1';",

  1442                          Integer.toString(c));

  1443                 }

  1444             }

  1445             if (debug(" //")) {

  1446                 generateByteCodeComment(prev, i, byteCodes);

  1447             }

  1448             if (outChanged) {

  1449                 append("\n");

  1450             }

  1451         }

  1452         if (previousTrap != null) {

  1453             generateCatch(previousTrap, byteCodes.length, topMostLabel);

  1454         }

  1455         if (didBranches) {

  1456             append("\n    }\n");

  1457         }

  1458         while (openBraces-- > 0) {

  1459             append('}');

  1460         }

  1461         if (obj) {

  1462             append("\n}});");

  1463         } else {

  1464             append("\n};");

  1465         }

  1466     }

  1468     private int generateIf(StackMapper mapper, byte[] byteCodes,

  1469         int i, final CharSequence v2, final CharSequence v1,

  1470         final String test, int topMostLabel

  1471     ) throws IOException {

  1472         mapper.flush(this);

  1473         int indx = i + readShortArg(byteCodes, i);

  1474         append("if ((").append(v1)

  1475            .append(") ").append(test).append(" (")

  1476            .append(v2).append(")) ");

  1477         goTo(this, i, indx, topMostLabel);

  1478         return i + 2;

  1479     }

  1481     private int readInt4(byte[] byteCodes, int offset) {

  1482         final int d = byteCodes[offset + 0] << 24;

  1483         final int c = byteCodes[offset + 1] << 16;

  1484         final int b = byteCodes[offset + 2] << 8;

  1485         final int a = byteCodes[offset + 3];

  1486         return (d & 0xff000000) | (c & 0xff0000) | (b & 0xff00) | (a & 0xff);

  1487     }

  1488     private static int readUByte(byte[] byteCodes, int offset) {

  1489         return byteCodes[offset] & 0xff;

  1490     }

  1492     private static int readUShort(byte[] byteCodes, int offset) {

  1493         return ((byteCodes[offset] & 0xff) << 8)

  1494                     | (byteCodes[offset + 1] & 0xff);

  1495     }

  1496     private static int readUShortArg(byte[] byteCodes, int offsetInstruction) {

  1497         return readUShort(byteCodes, offsetInstruction + 1);

  1498     }

  1500     private static int readShort(byte[] byteCodes, int offset) {

  1501         int signed = byteCodes[offset];

  1502         byte b0 = (byte)signed;

  1503         return (b0 << 8) | (byteCodes[offset + 1] & 0xff);

  1504     }

  1505     private static int readShortArg(byte[] byteCodes, int offsetInstruction) {

  1506         return readShort(byteCodes, offsetInstruction + 1);

  1507     }

  1509     private static void countArgs(String descriptor, char[] returnType, StringBuilder sig, StringBuilder cnt) {

  1510         int i = 0;

  1511         Boolean count = null;

  1512         boolean array = false;

  1513         sig.append("__");

  1514         int firstPos = sig.length();

  1515         while (i < descriptor.length()) {

  1516             char ch = descriptor.charAt(i++);

  1517             switch (ch) {

  1518                 case '(':

  1519                     count = true;

  1520                     continue;

  1521                 case ')':

  1522                     count = false;

  1523                     continue;

  1524                 case 'B':

  1525                 case 'C':

  1526                 case 'D':

  1527                 case 'F':

  1528                 case 'I':

  1529                 case 'J':

  1530                 case 'S':

  1531                 case 'Z':

  1532                     if (count) {

  1533                         if (array) {

  1534                             sig.append("_3");

  1535                         }

  1536                         sig.append(ch);

  1537                         if (ch == 'J' || ch == 'D') {

  1538                             cnt.append('1');

  1539                         } else {

  1540                             cnt.append('0');

  1541                         }

  1542                     } else {

  1543                         sig.insert(firstPos, ch);

  1544                         if (array) {

  1545                             returnType[0] = '[';

  1546                             sig.insert(firstPos, "_3");

  1547                         } else {

  1548                             returnType[0] = ch;

  1549                         }

  1550                     }

  1551                     array = false;

  1552                     continue;

  1553                 case 'V':

  1554                     assert !count;

  1555                     returnType[0] = 'V';

  1556                     sig.insert(firstPos, 'V');

  1557                     continue;

  1558                 case 'L':

  1559                     int next = descriptor.indexOf(';', i);

  1560                     String realSig = mangleSig(descriptor, i - 1, next + 1);

  1561                     if (count) {

  1562                         if (array) {

  1563                             sig.append("_3");

  1564                         }

  1565                         sig.append(realSig);

  1566                         cnt.append('0');

  1567                     } else {

  1568                         sig.insert(firstPos, realSig);

  1569                         if (array) {

  1570                             sig.insert(firstPos, "_3");

  1571                         }

  1572                         returnType[0] = 'L';

  1573                     }

  1574                     i = next + 1;

  1575                     array = false;

  1576                     continue;

  1577                 case '[':

  1578                     array = true;

  1579                     continue;

  1580                 default:

  1581                     throw new IllegalStateException("Invalid char: " + ch);

  1582             }

  1583         }

  1584     }

  1586     static String mangleSig(String sig) {

  1587         return mangleSig(sig, 0, sig.length());

  1588     }

  1590     private static String mangleMethodName(String name) {

  1591         StringBuilder sb = new StringBuilder(name.length() * 2);

  1592         int last = name.length();

  1593         for (int i = 0; i < last; i++) {

  1594             final char ch = name.charAt(i);

  1595             switch (ch) {

  1596                 case '_': sb.append("_1"); break;

  1597                 default: sb.append(ch); break;

  1598             }

  1599         }

  1600         return sb.toString();

  1601     }

  1602     private static String mangleSig(String txt, int first, int last) {

  1603         StringBuilder sb = new StringBuilder((last - first) * 2);

  1604         for (int i = first; i < last; i++) {

  1605             final char ch = txt.charAt(i);

  1606             switch (ch) {

  1607                 case '/': sb.append('_'); break;

  1608                 case '_': sb.append("_1"); break;

  1609                 case ';': sb.append("_2"); break;

  1610                 case '[': sb.append("_3"); break;

  1611                 default:

  1612                     if (Character.isJavaIdentifierPart(ch)) {

  1613                         sb.append(ch);

  1614                     } else {

  1615                         sb.append("_0");

  1616                         String hex = Integer.toHexString(ch).toLowerCase();

  1617                         for (int m = hex.length(); m < 4; m++) {

  1618                             sb.append("0");

  1619                         }

  1620                         sb.append(hex);

  1621                     }

  1622                 break;

  1623             }

  1624         }

  1625         return sb.toString();

  1626     }

  1628     private static String mangleClassName(String name) {

  1629         return mangleSig(name);

  1630     }

  1632     private static String findMethodName(MethodData m, StringBuilder cnt) {

  1633         StringBuilder name = new StringBuilder();

  1634         if ("<init>".equals(m.getName())) { // NOI18N

  1635             name.append("cons"); // NOI18N

  1636         } else if ("<clinit>".equals(m.getName())) { // NOI18N

  1637             name.append("class"); // NOI18N

  1638         } else {

  1639             name.append(mangleMethodName(m.getName()));

  1640         }

  1642         countArgs(m.getInternalSig(), new char[1], name, cnt);

  1643         return name.toString();

  1644     }

  1646     static String findMethodName(String[] mi, StringBuilder cnt, char[] returnType) {

  1647         StringBuilder name = new StringBuilder();

  1648         String descr = mi[2];//mi.getDescriptor();

  1649         String nm= mi[1];

  1650         if ("<init>".equals(nm)) { // NOI18N

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

  1652         } else {

  1653             name.append(mangleMethodName(nm));

  1654         }

  1655         countArgs(descr, returnType, name, cnt);

  1656         return name.toString();

  1657     }

  1659     private int invokeStaticMethod(byte[] byteCodes, int i, final StackMapper mapper, boolean isStatic)

  1660     throws IOException {

  1661         int methodIndex = readUShortArg(byteCodes, i);

  1662         String[] mi = jc.getFieldInfoName(methodIndex);

  1663         char[] returnType = { 'V' };

  1664         StringBuilder cnt = new StringBuilder();

  1665         String mn = findMethodName(mi, cnt, returnType);

  1667         final int numArguments = isStatic ? cnt.length() : cnt.length() + 1;

  1668         final CharSequence[] vars = new CharSequence[numArguments];

  1670         for (int j = numArguments - 1; j >= 0; --j) {

  1671             vars[j] = mapper.popValue();

  1672         }

  1674         if (returnType[0] != 'V') {

  1675             mapper.flush(this);

  1676             append("var ")

  1677                .append(mapper.pushT(VarType.fromFieldType(returnType[0])))

  1678                .append(" = ");

  1679         }

  1681         final String in = mi[0];

  1682         String mcn;

  1683         if (callbacks && in.equals("org/apidesign/html/boot/spi/Fn")) {

  1684             mcn = "java_lang_Class";

  1685         } else {

  1686             mcn = mangleClassName(in);

  1687         }

  1688         String object = accessClass(mcn) + "(false)";

  1689         if (mn.startsWith("cons_")) {

  1690             object += ".constructor";

  1691         }

  1692         append(accessStaticMethod(object, mn, mi));

  1693         if (isStatic) {

  1694             append('(');

  1695         } else {

  1696             append(".call(");

  1697         }

  1698         if (numArguments > 0) {

  1699             append(vars[0]);

  1700             for (int j = 1; j < numArguments; ++j) {

  1701                 append(", ");

  1702                 append(vars[j]);

  1703             }

  1704         }

  1705         append(");");

  1706         i += 2;

  1707         addReference(in);

  1708         return i;

  1709     }

  1710     private int invokeVirtualMethod(byte[] byteCodes, int i, final StackMapper mapper)

  1711     throws IOException {

  1712         int methodIndex = readUShortArg(byteCodes, i);

  1713         String[] mi = jc.getFieldInfoName(methodIndex);

  1714         char[] returnType = { 'V' };

  1715         StringBuilder cnt = new StringBuilder();

  1716         String mn = findMethodName(mi, cnt, returnType);

  1718         final int numArguments = cnt.length() + 1;

  1719         final CharSequence[] vars = new CharSequence[numArguments];

  1721         for (int j = numArguments - 1; j >= 0; --j) {

  1722             vars[j] = mapper.popValue();

  1723         }

  1725         if (returnType[0] != 'V') {

  1726             append("var ")

  1727                .append(mapper.pushT(VarType.fromFieldType(returnType[0])))

  1728                .append(" = ");

  1729         }

  1731         append(accessVirtualMethod(vars[0].toString(), mn, mi, numArguments));

  1732         String sep = "";

  1733         for (int j = 1; j < numArguments; ++j) {

  1734             append(sep);

  1735             append(vars[j]);

  1736             sep = ", ";

  1737         }

  1738         append(");");

  1739         i += 2;

  1740         return i;

  1741     }

  1743     private void addReference(String cn) throws IOException {

  1744         if (requireReference(cn)) {

  1745             debug(" /* needs " + cn + " */");

  1746         }

  1747     }

  1749     private void outType(String d, StringBuilder out) {

  1750         int arr = 0;

  1751         while (d.charAt(0) == '[') {

  1752             out.append('A');

  1753             d = d.substring(1);

  1754         }

  1755         if (d.charAt(0) == 'L') {

  1756             assert d.charAt(d.length() - 1) == ';';

  1757             out.append(d.replace('/', '_').substring(0, d.length() - 1));

  1758         } else {

  1759             out.append(d);

  1760         }

  1761     }

  1763     private String encodeConstant(int entryIndex) throws IOException {

  1764         String[] classRef = { null };

  1765         String s = jc.stringValue(entryIndex, classRef);

  1766         if (classRef[0] != null) {

  1767             if (classRef[0].startsWith("[")) {

  1768                 s = accessClass("java_lang_Class") + "(false)['forName__Ljava_lang_Class_2Ljava_lang_String_2']('" + classRef[0] + "')";

  1769             } else {

  1770                 addReference(classRef[0]);

  1771                 s = accessClass(mangleClassName(s)) + "(false).constructor.$class";

  1772             }

  1773         }

  1774         return s;

  1775     }

  1777     private String javaScriptBody(String destObject, MethodData m, boolean isStatic) throws IOException {

  1778         byte[] arr = m.findAnnotationData(true);

  1779         if (arr == null) {

  1780             return null;

  1781         }

  1782         final String jvmType = "Lorg/apidesign/bck2brwsr/core/JavaScriptBody;";

  1783         final String htmlType = "Lnet/java/html/js/JavaScriptBody;";

  1784         class P extends AnnotationParser {

  1785             public P() {

  1786                 super(false, true);

  1787             }

  1789             int cnt;

  1790             String[] args = new String[30];

  1791             String body;

  1792             boolean javacall;

  1793             boolean html4j;

  1795             @Override

  1796             protected void visitAttr(String type, String attr, String at, String value) {

  1797                 if (type.equals(jvmType)) {

  1798                     if ("body".equals(attr)) {

  1799                         body = value;

  1800                     } else if ("args".equals(attr)) {

  1801                         args[cnt++] = value;

  1802                     } else {

  1803                         throw new IllegalArgumentException(attr);

  1804                     }

  1805                 }

  1806                 if (type.equals(htmlType)) {

  1807                     html4j = true;

  1808                     if ("body".equals(attr)) {

  1809                         body = value;

  1810                     } else if ("args".equals(attr)) {

  1811                         args[cnt++] = value;

  1812                     } else if ("javacall".equals(attr)) {

  1813                         javacall = "1".equals(value);

  1814                     } else if ("wait4js".equals(attr)) {

  1815                         // ignore, we always invoke synchronously

  1816                     } else {

  1817                         throw new IllegalArgumentException(attr);

  1818                     }

  1819                 }

  1820             }

  1821         }

  1822         P p = new P();

  1823         p.parse(arr, jc);

  1824         if (p.body == null) {

  1825             return null;

  1826         }

  1827         StringBuilder cnt = new StringBuilder();

  1828         final String mn = findMethodName(m, cnt);

  1829         append(destObject).append(".").append(mn);

  1830         append(" = function(");

  1831         String space = "";

  1832         int index = 0;

  1833         StringBuilder toValue = new StringBuilder();

  1834         for (int i = 0; i < cnt.length(); i++) {

  1835             append(space);

  1836             space = outputArg(this, p.args, index);

  1837             if (p.html4j && space.length() > 0) {

  1838                 toValue.append("\n  ").append(p.args[index]).append(" = ")

  1839                     .append(accessClass("java_lang_Class")).append("(false).toJS(").

  1840                     append(p.args[index]).append(");");

  1841             }

  1842             index++;

  1843         }

  1844         append(") {").append("\n");

  1845         append(toValue.toString());

  1846         if (p.javacall) {

  1847             int lastSlash = jc.getClassName().lastIndexOf('/');

  1848             final String pkg = jc.getClassName().substring(0, lastSlash);

  1849             append(mangleCallbacks(pkg, p.body));

  1850             requireReference(pkg + "/$JsCallbacks$");

  1851         } else {

  1852             append(p.body);

  1853         }

  1854         append("\n}\n");

  1855         return mn;

  1856     }

  1858     private static CharSequence mangleCallbacks(String pkgName, String body) {

  1859         StringBuilder sb = new StringBuilder();

  1860         int pos = 0;

  1861         for (;;) {

  1862             int next = body.indexOf(".@", pos);

  1863             if (next == -1) {

  1864                 sb.append(body.substring(pos));

  1865                 body = sb.toString();

  1866                 break;

  1867             }

  1868             int ident = next;

  1869             while (ident > 0) {

  1870                 if (!Character.isJavaIdentifierPart(body.charAt(--ident))) {

  1871                     ident++;

  1872                     break;

  1873                 }

  1874             }

  1875             String refId = body.substring(ident, next);

  1877             sb.append(body.substring(pos, ident));

  1879             int sigBeg = body.indexOf('(', next);

  1880             int sigEnd = body.indexOf(')', sigBeg);

  1881             int colon4 = body.indexOf("::", next);

  1882             if (sigBeg == -1 || sigEnd == -1 || colon4 == -1) {

  1883                 throw new IllegalStateException("Malformed body " + body);

  1884             }

  1885             String fqn = body.substring(next + 2, colon4);

  1886             String method = body.substring(colon4 + 2, sigBeg);

  1887             String params = body.substring(sigBeg, sigEnd + 1);

  1889             int paramBeg = body.indexOf('(', sigEnd + 1);

  1891             sb.append("vm.").append(pkgName.replace('/', '_')).append("_$JsCallbacks$(false)._VM().");

  1892             sb.append(mangleJsCallbacks(fqn, method, params, false));

  1893             sb.append("(").append(refId);

  1894             if (body.charAt(paramBeg + 1) != ')') {

  1895                 sb.append(",");

  1896             }

  1897             pos = paramBeg + 1;

  1898         }

  1899         sb = null;

  1900         pos = 0;

  1901         for (;;) {

  1902             int next = body.indexOf("@", pos);

  1903             if (next == -1) {

  1904                 if (sb == null) {

  1905                     return body;

  1906                 }

  1907                 sb.append(body.substring(pos));

  1908                 return sb;

  1909             }

  1910             if (sb == null) {

  1911                 sb = new StringBuilder();

  1912             }

  1914             sb.append(body.substring(pos, next));

  1916             int sigBeg = body.indexOf('(', next);

  1917             int sigEnd = body.indexOf(')', sigBeg);

  1918             int colon4 = body.indexOf("::", next);

  1919             if (sigBeg == -1 || sigEnd == -1 || colon4 == -1) {

  1920                 throw new IllegalStateException("Malformed body " + body);

  1921             }

  1922             String fqn = body.substring(next + 1, colon4);

  1923             String method = body.substring(colon4 + 2, sigBeg);

  1924             String params = body.substring(sigBeg, sigEnd + 1);

  1926             int paramBeg = body.indexOf('(', sigEnd + 1);

  1928             sb.append("vm.").append(pkgName.replace('/', '_')).append("_$JsCallbacks$(false)._VM().");

  1929             sb.append(mangleJsCallbacks(fqn, method, params, true));

  1930             sb.append("(");

  1931             pos = paramBeg + 1;

  1932         }

  1933     }

  1935     static String mangleJsCallbacks(String fqn, String method, String params, boolean isStatic) {

  1936         if (params.startsWith("(")) {

  1937             params = params.substring(1);

  1938         }

  1939         if (params.endsWith(")")) {

  1940             params = params.substring(0, params.length() - 1);

  1941         }

  1942         StringBuilder sb = new StringBuilder();

  1943         final String fqnu = fqn.replace('.', '_');

  1944         final String rfqn = mangleClassName(fqnu);

  1945         final String rm = mangleMethodName(method);

  1946         final String srp;

  1947         {

  1948             StringBuilder pb = new StringBuilder();

  1949             int len = params.length();

  1950             int indx = 0;

  1951             while (indx < len) {

  1952                 char ch = params.charAt(indx);

  1953                 if (ch == '[' || ch == 'L') {

  1954                     pb.append("Ljava/lang/Object;");

  1955                     indx = params.indexOf(';', indx) + 1;

  1956                 } else {

  1957                     pb.append(ch);

  1958                     indx++;

  1959                 }

  1960             }

  1961             srp = mangleSig(pb.toString());

  1962         }

  1963         final String rp = mangleSig(params);

  1964         final String mrp = mangleMethodName(rp);

  1965         sb.append(rfqn).append("$").append(rm).

  1966             append('$').append(mrp).append("__Ljava_lang_Object_2");

  1967         if (!isStatic) {

  1968             sb.append('L').append(fqnu).append("_2");

  1969         }

  1970         sb.append(srp);

  1971         return sb.toString();

  1972     }

  1974     private static String className(ClassData jc) {

  1975         //return jc.getName().getInternalName().replace('/', '_');

  1976         return mangleClassName(jc.getClassName());

  1977     }

  1979     private static String[] findAnnotation(

  1980         byte[] arr, ClassData cd, final String className,

  1981         final String... attrNames

  1982     ) throws IOException {

  1983         if (arr == null) {

  1984             return null;

  1985         }

  1986         final String[] values = new String[attrNames.length];

  1987         final boolean[] found = { false };

  1988         final String jvmType = "L" + className.replace('.', '/') + ";";

  1989         AnnotationParser ap = new AnnotationParser(false, true) {

  1990             @Override

  1991             protected void visitAttr(String type, String attr, String at, String value) {

  1992                 if (type.equals(jvmType)) {

  1993                     found[0] = true;

  1994                     for (int i = 0; i < attrNames.length; i++) {

  1995                         if (attrNames[i].equals(attr)) {

  1996                             values[i] = value;

  1997                         }

  1998                     }

  1999                 }

  2000             }

  2002         };

  2003         ap.parse(arr, cd);

  2004         return found[0] ? values : null;

  2005     }

  2007     private CharSequence initField(FieldData v) {

  2008         final String is = v.getInternalSig();

  2009         if (is.length() == 1) {

  2010             switch (is.charAt(0)) {

  2011                 case 'S':

  2012                 case 'J':

  2013                 case 'B':

  2014                 case 'Z':

  2015                 case 'C':

  2016                 case 'I': return " = 0;";

  2017                 case 'F':

  2018                 case 'D': return " = 0.0;";

  2019                 default:

  2020                     throw new IllegalStateException(is);

  2021             }

  2022         }

  2023         return " = null;";

  2024     }

  2026     private void generateAnno(ClassData cd, byte[] data) throws IOException {

  2027         AnnotationParser ap = new AnnotationParser(true, false) {

  2028             int[] cnt = new int[32];

  2029             int depth;

  2031             @Override

  2032             protected void visitAnnotationStart(String attrType, boolean top) throws IOException {

  2033                 final String slashType = attrType.substring(1, attrType.length() - 1);

  2034                 requireReference(slashType);

  2036                 if (cnt[depth]++ > 0) {

  2037                     append(",");

  2038                 }

  2039                 if (top) {

  2040                     append('"').append(attrType).append("\" : ");

  2041                 }

  2042                 append("{\n");

  2043                 cnt[++depth] = 0;

  2044             }

  2046             @Override

  2047             protected void visitAnnotationEnd(String type, boolean top) throws IOException {

  2048                 append("\n}\n");

  2049                 depth--;

  2050             }

  2052             @Override

  2053             protected void visitValueStart(String attrName, char type) throws IOException {

  2054                 if (cnt[depth]++ > 0) {

  2055                     append(",\n");

  2056                 }

  2057                 cnt[++depth] = 0;

  2058                 if (attrName != null) {

  2059                     append('"').append(attrName).append("\" : ");

  2060                 }

  2061                 if (type == '[') {

  2062                     append("[");

  2063                 }

  2064             }

  2066             @Override

  2067             protected void visitValueEnd(String attrName, char type) throws IOException {

  2068                 if (type == '[') {

  2069                     append("]");

  2070                 }

  2071                 depth--;

  2072             }

  2074             @Override

  2075             protected void visitAttr(String type, String attr, String attrType, String value)

  2076             throws IOException {

  2077                 if (attr == null && value == null) {

  2078                     return;

  2079                 }

  2080                 append(value);

  2081             }

  2083             @Override

  2084             protected void visitEnumAttr(String type, String attr, String attrType, String value)

  2085             throws IOException {

  2086                 final String slashType = attrType.substring(1, attrType.length() - 1);

  2087                 requireReference(slashType);

  2089                 final String cn = mangleClassName(slashType);

  2090                 append(accessClass(cn))

  2091                    .append("(false)['valueOf__L").

  2092                     append(cn).

  2093                     append("_2Ljava_lang_String_2']('").

  2094                     append(value).

  2095                     append("')");

  2096             }

  2097         };

  2098         ap.parse(data, cd);

  2099     }

  2101     private static String outputArg(Appendable out, String[] args, int indx) throws IOException {

  2102         final String name = args[indx];

  2103         if (name == null) {

  2104             return "";

  2105         }

  2106         if (name.contains(",")) {

  2107             throw new IOException("Wrong parameter with ',': " + name);

  2108         }

  2109         out.append(name);

  2110         return ",";

  2111     }

  2113     final void emitNoFlush(

  2114         StackMapper sm,

  2115         final String format, final CharSequence... params

  2116     ) throws IOException {

  2117         emitImpl(this, format, params);

  2118     }

  2119     static final void emit(

  2120         StackMapper sm,

  2121         final Appendable out,

  2122         final String format, final CharSequence... params

  2123     ) throws IOException {

  2124         sm.flush(out);

  2125         emitImpl(out, format, params);

  2126     }

  2127     static void emitImpl(final Appendable out,

  2128                              final String format,

  2129                              final CharSequence... params) throws IOException {

  2130         final int length = format.length();

  2132         int processed = 0;

  2133         int paramOffset = format.indexOf('@');

  2134         while ((paramOffset != -1) && (paramOffset < (length - 1))) {

  2135             final char paramChar = format.charAt(paramOffset + 1);

  2136             if ((paramChar >= '1') && (paramChar <= '9')) {

  2137                 final int paramIndex = paramChar - '0' - 1;

  2139                 out.append(format, processed, paramOffset);

  2140                 out.append(params[paramIndex]);

  2142                 ++paramOffset;

  2143                 processed = paramOffset + 1;

  2144             }

  2146             paramOffset = format.indexOf('@', paramOffset + 1);

  2147         }

  2149         out.append(format, processed, length);

  2150     }

  2152     private void generateCatch(TrapData[] traps, int current, int topMostLabel) throws IOException {

  2153         append("} catch (e) {\n");

  2154         int finallyPC = -1;

  2155         for (TrapData e : traps) {

  2156             if (e == null) {

  2157                 break;

  2158             }

  2159             if (e.catch_cpx != 0) { //not finally

  2160                 final String classInternalName = jc.getClassName(e.catch_cpx);

  2161                 addReference(classInternalName);

  2162                 append("e = vm.java_lang_Class(false).bck2BrwsrThrwrbl(e);");

  2163                 append("if (e['$instOf_" + classInternalName.replace('/', '_') + "']) {");

  2164                 append("var stA0 = e;");

  2165                 goTo(this, current, e.handler_pc, topMostLabel);

  2166                 append("}\n");

  2167             } else {

  2168                 finallyPC = e.handler_pc;

  2169             }

  2170         }

  2171         if (finallyPC == -1) {

  2172             append("throw e;");

  2173         } else {

  2174             append("var stA0 = e;");

  2175             goTo(this, current, finallyPC, topMostLabel);

  2176         }

  2177         append("\n}");

  2178     }

  2180     private static void goTo(Appendable out, int current, int to, int canBack) throws IOException {

  2181         if (to < current) {

  2182             if (canBack < to) {

  2183                 out.append("{ gt = 0; continue X_" + to + "; }");

  2184             } else {

  2185                 out.append("{ gt = " + to + "; continue X_0; }");

  2186             }

  2187         } else {

  2188             out.append("{ gt = " + to + "; break IF; }");

  2189         }

  2190     }

  2192     private static void emitIf(

  2193         StackMapper sm,

  2194         Appendable out, String pattern,

  2195         CharSequence param,

  2196         int current, int to, int canBack

  2197     ) throws IOException {

  2198         sm.flush(out);

  2199         emitImpl(out, pattern, param);

  2200         goTo(out, current, to, canBack);

  2201     }

  2203     private void generateNewArray(int atype, final StackMapper smapper) throws IOException, IllegalStateException {

  2204         String jvmType;

  2205         switch (atype) {

  2206             case 4: jvmType = "[Z"; break;

  2207             case 5: jvmType = "[C"; break;

  2208             case 6: jvmType = "[F"; break;

  2209             case 7: jvmType = "[D"; break;

  2210             case 8: jvmType = "[B"; break;

  2211             case 9: jvmType = "[S"; break;

  2212             case 10: jvmType = "[I"; break;

  2213             case 11: jvmType = "[J"; break;

  2214             default: throw new IllegalStateException("Array type: " + atype);

  2215         }

  2216         emit(smapper, this,

  2217             "var @2 = Array.prototype['newArray__Ljava_lang_Object_2ZLjava_lang_String_2Ljava_lang_Object_2I'](true, '@3', null, @1);",

  2218              smapper.popI(), smapper.pushA(), jvmType);

  2219     }

  2221     private void generateANewArray(int type, final StackMapper smapper) throws IOException {

  2222         String typeName = jc.getClassName(type);

  2223         String ref = "null";

  2224         if (typeName.startsWith("[")) {

  2225             typeName = "'[" + typeName + "'";

  2226         } else {

  2227             ref = "vm." + mangleClassName(typeName);

  2228             typeName = "'[L" + typeName + ";'";

  2229         }

  2230         emit(smapper, this,

  2231             "var @2 = Array.prototype['newArray__Ljava_lang_Object_2ZLjava_lang_String_2Ljava_lang_Object_2I'](false, @3, @4, @1);",

  2232              smapper.popI(), smapper.pushA(), typeName, ref);

  2233     }

  2235     private int generateMultiANewArray(int type, final byte[] byteCodes, int i, final StackMapper smapper) throws IOException {

  2236         String typeName = jc.getClassName(type);

  2237         int dim = readUByte(byteCodes, ++i);

  2238         StringBuilder dims = new StringBuilder();

  2239         dims.append('[');

  2240         for (int d = 0; d < dim; d++) {

  2241             if (d != 0) {

  2242                 dims.insert(1, ",");

  2243             }

  2244             dims.insert(1, smapper.popI());

  2245         }

  2246         dims.append(']');

  2247         String fn = "null";

  2248         if (typeName.charAt(dim) == 'L') {

  2249             fn = "vm." + mangleClassName(typeName.substring(dim + 1, typeName.length() - 1));

  2250         }

  2251         emit(smapper, this,

  2252             "var @2 = Array.prototype['multiNewArray__Ljava_lang_Object_2Ljava_lang_String_2_3ILjava_lang_Object_2']('@3', @1, @4);",

  2253              dims.toString(), smapper.pushA(), typeName, fn

  2254         );

  2255         return i;

  2256     }

  2258     private int generateTableSwitch(int i, final byte[] byteCodes, final StackMapper smapper, int topMostLabel) throws IOException {

  2259         int table = i / 4 * 4 + 4;

  2260         int dflt = i + readInt4(byteCodes, table);

  2261         table += 4;

  2262         int low = readInt4(byteCodes, table);

  2263         table += 4;

  2264         int high = readInt4(byteCodes, table);

  2265         table += 4;

  2266         final CharSequence swVar = smapper.popValue();

  2267         smapper.flush(this);

  2268         append("switch (").append(swVar).append(") {\n");

  2269         while (low <= high) {

  2270             int offset = i + readInt4(byteCodes, table);

  2271             table += 4;

  2272             append("  case " + low).append(":"); goTo(this, i, offset, topMostLabel); append('\n');

  2273             low++;

  2274         }

  2275         append("  default: ");

  2276         goTo(this, i, dflt, topMostLabel);

  2277         append("\n}");

  2278         i = table - 1;

  2279         return i;

  2280     }

  2282     private int generateLookupSwitch(int i, final byte[] byteCodes, final StackMapper smapper, int topMostLabel) throws IOException {

  2283         int table = i / 4 * 4 + 4;

  2284         int dflt = i + readInt4(byteCodes, table);

  2285         table += 4;

  2286         int n = readInt4(byteCodes, table);

  2287         table += 4;

  2288         final CharSequence swVar = smapper.popValue();

  2289         smapper.flush(this);

  2290         append("switch (").append(swVar).append(") {\n");

  2291         while (n-- > 0) {

  2292             int cnstnt = readInt4(byteCodes, table);

  2293             table += 4;

  2294             int offset = i + readInt4(byteCodes, table);

  2295             table += 4;

  2296             append("  case " + cnstnt).append(": "); goTo(this, i, offset, topMostLabel); append('\n');

  2297         }

  2298         append("  default: ");

  2299         goTo(this, i, dflt, topMostLabel);

  2300         append("\n}");

  2301         i = table - 1;

  2302         return i;

  2303     }

  2305     private void generateInstanceOf(int indx, final StackMapper smapper) throws IOException {

  2306         String type = jc.getClassName(indx);

  2307         if (!type.startsWith("[")) {

  2308             emit(smapper, this,

  2309                     "var @2 = @1 != null && @1['$instOf_@3'] ? 1 : 0;",

  2310                  smapper.popA(), smapper.pushI(),

  2311                  type.replace('/', '_'));

  2312         } else {

  2313             int cnt = 0;

  2314             while (type.charAt(cnt) == '[') {

  2315                 cnt++;

  2316             }

  2317             if (type.charAt(cnt) == 'L') {

  2318                 type = "vm." + mangleClassName(type.substring(cnt + 1, type.length() - 1));

  2319                 emit(smapper, this,

  2320                     "var @2 = Array.prototype['isInstance__ZLjava_lang_Object_2ILjava_lang_Object_2'](@1, @4, @3);",

  2321                     smapper.popA(), smapper.pushI(),

  2322                     type, "" + cnt

  2323                 );

  2324             } else {

  2325                 emit(smapper, this,

  2326                     "var @2 = Array.prototype['isInstance__ZLjava_lang_Object_2Ljava_lang_String_2'](@1, '@3');",

  2327                     smapper.popA(), smapper.pushI(), type

  2328                 );

  2329             }

  2330         }

  2331     }

  2333     private void generateCheckcast(int indx, final StackMapper smapper) throws IOException {

  2334         String type = jc.getClassName(indx);

  2335         if (!type.startsWith("[")) {

  2336             emitNoFlush(smapper,

  2337                  "if (@1 !== null && !@1['$instOf_@2']) throw vm.java_lang_ClassCastException(true);",

  2338                  smapper.getT(0, VarType.REFERENCE, false), type.replace('/', '_'));

  2339         } else {

  2340             int cnt = 0;

  2341             while (type.charAt(cnt) == '[') {

  2342                 cnt++;

  2343             }

  2344             if (type.charAt(cnt) == 'L') {

  2345                 type = "vm." + mangleClassName(type.substring(cnt + 1, type.length() - 1));

  2346                 emitNoFlush(smapper,

  2347                     "if (@1 !== null && !Array.prototype['isInstance__ZLjava_lang_Object_2ILjava_lang_Object_2'](@1, @3, @2)) throw vm.java_lang_ClassCastException(true);",

  2348                      smapper.getT(0, VarType.REFERENCE, false), type, "" + cnt

  2349                 );

  2350             } else {

  2351                 emitNoFlush(smapper,

  2352                     "if (@1 !== null && !Array.prototype['isInstance__ZLjava_lang_Object_2Ljava_lang_String_2'](@1, '@2')) throw vm.java_lang_ClassCastException(true);",

  2353                      smapper.getT(0, VarType.REFERENCE, false), type

  2354                 );

  2355             }

  2356         }

  2357     }

  2359     private void generateByteCodeComment(int prev, int i, final byte[] byteCodes) throws IOException {

  2360         for (int j = prev; j <= i; j++) {

  2361             append(" ");

  2362             final int cc = readUByte(byteCodes, j);

  2363             append(Integer.toString(cc));

  2364         }

  2365     }

  2367     @JavaScriptBody(args = "msg", body = "")

  2368     private static void println(String msg) {

  2369         System.err.println(msg);

  2370     }

  2371 }

author	Jaroslav Tulach <jaroslav.tulach@apidesign.org>
	Sat, 13 Sep 2014 18:14:55 +0200
branch	jdk8
changeset 1686	63ca617c8101
parent 1673	2d3d0b72af04
child 1688	e709c530c227
permissions	-rw-r--r--