hg/bck2brwsr: rt/vm/src/main/java/org/apidesign/vm4brwsr/ByteCodeToJavaScript.java@2f22f2a2175d

     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 fillInstOf(x) {");

   262         String instOfName = "$instOf_" + className;

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

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

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

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

   267             requireReference(superInterface);

   268         }

   269         append("\n    }");

   270         append("\n    try {");

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

   272         append("\n      fillInstOf(c);");

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

   274         append("\n    }");

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

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

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

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

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

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

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

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

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

   284         if (classAnno != null) {

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

   286             generateAnno(jc, classAnno);

   287             append("\n    };");

   288         }

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

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

   291         }

   292         append("\n  }");

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

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

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

   296         append("\n    }");

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

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

   299             if (javaScriptOnly(onlyArr)) continue;

   300             if (!v.isStatic()) {

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

   302                     append(className).append('_').

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

   304             }

   305         }

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

   307         append("\n  }");

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

   309         append("\n};");

   311         declaredClass(jc, className);

   313 //        StringBuilder sb = new StringBuilder();

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

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

   316 //        }

   317         return "";

   318     }

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

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

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

   323             "name", "value"

   324         );

   325         if (only != null) {

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

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

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

   329             }

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

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

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

   333             }

   334             return true;

   335         }

   336         return false;

   337     }

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

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

   340         if (jsb != null) {

   341             return jsb;

   342         }

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

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

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

   346         }

   347         generateMethod(destObject, mn, m);

   348         return mn;

   349     }

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

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

   353         if (jsb != null) {

   354             return jsb;

   355         }

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

   357         generateMethod(destObject, mn, m);

   358         return mn;

   359     }

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

   362             throws IOException {

   363         final StackMapIterator stackMapIterator = m.createStackMapIterator();

   364         TrapDataIterator trap = m.getTrapDataIterator();

   365         final LocalsMapper lmapper =

   366                 new LocalsMapper(stackMapIterator.getArguments());

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

   370         if (obj) {

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

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

   373         } else {

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

   375         }

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

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

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

   380         if (byteCodes == null) {

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

   382                .append(jc.getClassName()).append('.')

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

   384             if (obj) {

   385                 append("}");

   386             }

   387             append("};");

   388             return;

   389         }

   391         final StackMapper smapper = new StackMapper();

   393         if (!m.isStatic()) {

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

   395         }

   397         int lastStackFrame;

   398         TrapData[] previousTrap = null;

   399         boolean wide = false;

   400         boolean didBranches;

   401         if (stackMapIterator.isEmpty()) {

   402             didBranches = false;

   403             lastStackFrame = 0;

   404         } else {

   405             didBranches = true;

   406             lastStackFrame = -1;

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

   408         }

   410         int openBraces = 0;

   411         int topMostLabel = 0;

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

   413             int prev = i;

   414             outChanged = false;

   415             stackMapIterator.advanceTo(i);

   416             boolean changeInCatch = trap.advanceTo(i);

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

   418                 if (previousTrap != null) {

   419                     generateCatch(previousTrap, i, topMostLabel);

   420                     previousTrap = null;

   421                 }

   422             }

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

   424                 smapper.flush(this);

   425                 if (i != 0) {

   426                     append("    }\n");

   427                 }

   428                 if (openBraces > 64) {

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

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

   431                     }

   432                     openBraces = 1;

   433                     topMostLabel = i;

   434                 }

   436                 lastStackFrame = stackMapIterator.getFrameIndex();

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

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

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

   440                 openBraces++;

   441                 changeInCatch = true;

   442             } else {

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

   444             }

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

   446                 append("try {");

   447                 previousTrap = trap.current();

   448             }

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

   450             switch (c) {

   451                 case opc_aload_0:

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

   453                     break;

   454                 case opc_iload_0:

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

   456                     break;

   457                 case opc_lload_0:

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

   459                     break;

   460                 case opc_fload_0:

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

   462                     break;

   463                 case opc_dload_0:

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

   465                     break;

   466                 case opc_aload_1:

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

   468                     break;

   469                 case opc_iload_1:

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

   471                     break;

   472                 case opc_lload_1:

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

   474                     break;

   475                 case opc_fload_1:

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

   477                     break;

   478                 case opc_dload_1:

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

   480                     break;

   481                 case opc_aload_2:

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

   483                     break;

   484                 case opc_iload_2:

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

   486                     break;

   487                 case opc_lload_2:

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

   489                     break;

   490                 case opc_fload_2:

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

   492                     break;

   493                 case opc_dload_2:

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

   495                     break;

   496                 case opc_aload_3:

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

   498                     break;

   499                 case opc_iload_3:

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

   501                     break;

   502                 case opc_lload_3:

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

   504                     break;

   505                 case opc_fload_3:

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

   507                     break;

   508                 case opc_dload_3:

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

   510                     break;

   511                 case opc_iload: {

   512                     ++i;

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

   514                                           : readUByte(byteCodes, i);

   515                     wide = false;

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

   517                     break;

   518                 }

   519                 case opc_lload: {

   520                     ++i;

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

   522                                           : readUByte(byteCodes, i);

   523                     wide = false;

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

   525                     break;

   526                 }

   527                 case opc_fload: {

   528                     ++i;

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

   530                                           : readUByte(byteCodes, i);

   531                     wide = false;

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

   533                     break;

   534                 }

   535                 case opc_dload: {

   536                     ++i;

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

   538                                           : readUByte(byteCodes, i);

   539                     wide = false;

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

   541                     break;

   542                 }

   543                 case opc_aload: {

   544                     ++i;

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

   546                                           : readUByte(byteCodes, i);

   547                     wide = false;

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

   549                     break;

   550                 }

   551                 case opc_istore: {

   552                     ++i;

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

   554                                           : readUByte(byteCodes, i);

   555                     wide = false;

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

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

   558                     break;

   559                 }

   560                 case opc_lstore: {

   561                     ++i;

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

   563                                           : readUByte(byteCodes, i);

   564                     wide = false;

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

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

   567                     break;

   568                 }

   569                 case opc_fstore: {

   570                     ++i;

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

   572                                           : readUByte(byteCodes, i);

   573                     wide = false;

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

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

   576                     break;

   577                 }

   578                 case opc_dstore: {

   579                     ++i;

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

   581                                           : readUByte(byteCodes, i);

   582                     wide = false;

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

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

   585                     break;

   586                 }

   587                 case opc_astore: {

   588                     ++i;

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

   590                                           : readUByte(byteCodes, i);

   591                     wide = false;

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

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

   594                     break;

   595                 }

   596                 case opc_astore_0:

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

   598                     break;

   599                 case opc_istore_0:

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

   601                     break;

   602                 case opc_lstore_0:

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

   604                     break;

   605                 case opc_fstore_0:

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

   607                     break;

   608                 case opc_dstore_0:

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

   610                     break;

   611                 case opc_astore_1:

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

   613                     break;

   614                 case opc_istore_1:

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

   616                     break;

   617                 case opc_lstore_1:

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

   619                     break;

   620                 case opc_fstore_1:

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

   622                     break;

   623                 case opc_dstore_1:

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

   625                     break;

   626                 case opc_astore_2:

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

   628                     break;

   629                 case opc_istore_2:

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

   631                     break;

   632                 case opc_lstore_2:

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

   634                     break;

   635                 case opc_fstore_2:

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

   637                     break;

   638                 case opc_dstore_2:

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

   640                     break;

   641                 case opc_astore_3:

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

   643                     break;

   644                 case opc_istore_3:

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

   646                     break;

   647                 case opc_lstore_3:

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

   649                     break;

   650                 case opc_fstore_3:

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

   652                     break;

   653                 case opc_dstore_3:

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

   655                     break;

   656                 case opc_iadd:

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

   658                     break;

   659                 case opc_ladd:

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

   661                     break;

   662                 case opc_fadd:

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

   664                     break;

   665                 case opc_dadd:

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

   667                     break;

   668                 case opc_isub:

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

   670                     break;

   671                 case opc_lsub:

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

   673                     break;

   674                 case opc_fsub:

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

   676                     break;

   677                 case opc_dsub:

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

   679                     break;

   680                 case opc_imul:

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

   682                     break;

   683                 case opc_lmul:

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

   685                     break;

   686                 case opc_fmul:

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

   688                     break;

   689                 case opc_dmul:

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

   691                     break;

   692                 case opc_idiv:

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

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

   695                     break;

   696                 case opc_ldiv:

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

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

   699                     break;

   700                 case opc_fdiv:

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

   702                     break;

   703                 case opc_ddiv:

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

   705                     break;

   706                 case opc_irem:

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

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

   709                     break;

   710                 case opc_lrem:

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

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

   713                     break;

   714                 case opc_frem:

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

   716                     break;

   717                 case opc_drem:

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

   719                     break;

   720                 case opc_iand:

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

   722                     break;

   723                 case opc_land:

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

   725                     break;

   726                 case opc_ior:

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

   728                     break;

   729                 case opc_lor:

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

   731                     break;

   732                 case opc_ixor:

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

   734                     break;

   735                 case opc_lxor:

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

   737                     break;

   738                 case opc_ineg:

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

   740                     break;

   741                 case opc_lneg:

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

   743                     break;

   744                 case opc_fneg:

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

   746                     break;

   747                 case opc_dneg:

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

   749                     break;

   750                 case opc_ishl:

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

   752                     break;

   753                 case opc_lshl:

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

   755                     break;

   756                 case opc_ishr:

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

   758                     break;

   759                 case opc_lshr:

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

   761                     break;

   762                 case opc_iushr:

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

   764                     break;

   765                 case opc_lushr:

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

   767                     break;

   768                 case opc_iinc: {

   769                     ++i;

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

   771                                              : readUByte(byteCodes, i);

   772                     ++i;

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

   774                                             : byteCodes[i];

   775                     wide = false;

   776                     if (incrBy == 1) {

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

   778                     } else {

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

   780                              lmapper.getI(varIndx),

   781                              Integer.toString(incrBy));

   782                     }

   783                     break;

   784                 }

   785                 case opc_return:

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

   787                     break;

   788                 case opc_ireturn:

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

   790                     break;

   791                 case opc_lreturn:

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

   793                     break;

   794                 case opc_freturn:

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

   796                     break;

   797                 case opc_dreturn:

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

   799                     break;

   800                 case opc_areturn:

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

   802                     break;

   803                 case opc_i2l:

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

   805                     break;

   806                 case opc_i2f:

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

   808                     break;

   809                 case opc_i2d:

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

   811                     break;

   812                 case opc_l2i:

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

   814                     break;

   815                     // max int check?

   816                 case opc_l2f:

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

   818                     break;

   819                 case opc_l2d:

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

   821                     break;

   822                 case opc_f2d:

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

   824                          smapper.getF(0));

   825                     break;

   826                 case opc_d2f:

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

   828                          smapper.getD(0));

   829                     break;

   830                 case opc_f2i:

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

   832                          smapper.getF(0));

   833                     break;

   834                 case opc_f2l:

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

   836                          smapper.getF(0));

   837                     break;

   838                 case opc_d2i:

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

   840                          smapper.getD(0));

   841                     break;

   842                 case opc_d2l:

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

   844                     break;

   845                 case opc_i2b:

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

   847                     break;

   848                 case opc_i2c:

   849                     break;

   850                 case opc_i2s:

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

   852                     break;

   853                 case opc_aconst_null:

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

   855                     break;

   856                 case opc_iconst_m1:

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

   858                     break;

   859                 case opc_iconst_0:

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

   861                     break;

   862                 case opc_dconst_0:

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

   864                     break;

   865                 case opc_lconst_0:

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

   867                     break;

   868                 case opc_fconst_0:

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

   870                     break;

   871                 case opc_iconst_1:

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

   873                     break;

   874                 case opc_lconst_1:

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

   876                     break;

   877                 case opc_fconst_1:

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

   879                     break;

   880                 case opc_dconst_1:

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

   882                     break;

   883                 case opc_iconst_2:

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

   885                     break;

   886                 case opc_fconst_2:

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

   888                     break;

   889                 case opc_iconst_3:

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

   891                     break;

   892                 case opc_iconst_4:

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

   894                     break;

   895                 case opc_iconst_5:

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

   897                     break;

   898                 case opc_ldc: {

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

   900                     String v = encodeConstant(indx);

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

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

   903                     break;

   904                 }

   905                 case opc_ldc_w:

   906                 case opc_ldc2_w: {

   907                     int indx = readUShortArg(byteCodes, i);

   908                     i += 2;

   909                     String v = encodeConstant(indx);

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

   911                     if (type == VarType.LONG) {

   912                         final Long lv = new Long(v);

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

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

   915                         if (hi == 0) {

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

   917                         } else {

   918                             smapper.assign(this, VarType.LONG,

   919                                 "0x" + Integer.toHexString(hi) + ".next32(0x" +

   920                                     Integer.toHexString(low) + ")"

   921                             );

   922                         }

   923                     } else {

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

   925                     }

   926                     break;

   927                 }

   928                 case opc_lcmp:

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

   930                     break;

   931                 case opc_fcmpl:

   932                 case opc_fcmpg:

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

   934                     break;

   935                 case opc_dcmpl:

   936                 case opc_dcmpg:

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

   938                     break;

   939                 case opc_if_acmpeq:

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

   941                                    "===", topMostLabel);

   942                     break;

   943                 case opc_if_acmpne:

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

   945                                    "!==", topMostLabel);

   946                     break;

   947                 case opc_if_icmpeq:

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

   949                                    "==", topMostLabel);

   950                     break;

   951                 case opc_ifeq: {

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

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

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

   955                     i += 2;

   956                     break;

   957                 }

   958                 case opc_ifne: {

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

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

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

   962                     i += 2;

   963                     break;

   964                 }

   965                 case opc_iflt: {

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

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

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

   969                     i += 2;

   970                     break;

   971                 }

   972                 case opc_ifle: {

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

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

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

   976                     i += 2;

   977                     break;

   978                 }

   979                 case opc_ifgt: {

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

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

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

   983                     i += 2;

   984                     break;

   985                 }

   986                 case opc_ifge: {

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

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

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

   990                     i += 2;

   991                     break;

   992                 }

   993                 case opc_ifnonnull: {

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

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

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

   997                     i += 2;

   998                     break;

   999                 }

  1000                 case opc_ifnull: {

  1001                     int indx = i + readShortArg(byteCodes, i);

  1002                     emitIf(smapper, this, "if ((@1) === null) ",

  1003                          smapper.popA(), i, indx, topMostLabel);

  1004                     i += 2;

  1005                     break;

  1006                 }

  1007                 case opc_if_icmpne:

  1008                     i = generateIf(smapper, byteCodes, i, smapper.popI(), smapper.popI(),

  1009                                    "!=", topMostLabel);

  1010                     break;

  1011                 case opc_if_icmplt:

  1012                     i = generateIf(smapper, byteCodes, i, smapper.popI(), smapper.popI(),

  1013                                    "<", topMostLabel);

  1014                     break;

  1015                 case opc_if_icmple:

  1016                     i = generateIf(smapper, byteCodes, i, smapper.popI(), smapper.popI(),

  1017                                    "<=", topMostLabel);

  1018                     break;

  1019                 case opc_if_icmpgt:

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

  1021                                    ">", topMostLabel);

  1022                     break;

  1023                 case opc_if_icmpge:

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

  1025                                    ">=", topMostLabel);

  1026                     break;

  1027                 case opc_goto: {

  1028                     smapper.flush(this);

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

  1030                     goTo(this, i, indx, topMostLabel);

  1031                     i += 2;

  1032                     break;

  1033                 }

  1034                 case opc_lookupswitch: {

  1035                     i = generateLookupSwitch(i, byteCodes, smapper, topMostLabel);

  1036                     break;

  1037                 }

  1038                 case opc_tableswitch: {

  1039                     i = generateTableSwitch(i, byteCodes, smapper, topMostLabel);

  1040                     break;

  1041                 }

  1042                 case opc_invokeinterface: {

  1043                     i = invokeVirtualMethod(byteCodes, i, smapper) + 2;

  1044                     break;

  1045                 }

  1046                 case opc_invokevirtual:

  1047                     i = invokeVirtualMethod(byteCodes, i, smapper);

  1048                     break;

  1049                 case opc_invokespecial:

  1050                     i = invokeStaticMethod(byteCodes, i, smapper, false);

  1051                     break;

  1052                 case opc_invokestatic:

  1053                     i = invokeStaticMethod(byteCodes, i, smapper, true);

  1054                     break;

  1055                 case opc_invokedynamic: {

  1056                     int indx = readUShortArg(byteCodes, i);

  1057                     println("invoke dynamic: " + indx);

  1058                     ByteCodeParser.CPX2 c2 = jc.getCpoolEntry(indx);

  1059                     BootMethodData bm = jc.getBootMethod(c2.cpx1);

  1060                     CPX2 methodHandle = jc.getCpoolEntry(bm.method);

  1061                     println("  type: " + methodHandle.cpx1);

  1062                     String[] mi = jc.getFieldInfoName(methodHandle.cpx2);

  1063                     String mcn = mangleClassName(mi[0]);

  1064                     char[] returnType = {'V'};

  1065                     StringBuilder cnt = new StringBuilder();

  1066                     String mn = findMethodName(mi, cnt, returnType);

  1067                     println("  mi[0]: " + mi[0]);

  1068                     println("  mi[1]: " + mi[1]);

  1069                     println("  mi[2]: " + mi[2]);

  1070                     println("  mn   : " + mn);

  1071                     println("  name and type: " + jc.stringValue(c2.cpx2, true));

  1072                     String object = accessClass(mcn) + "(false)";

  1073                     if (mn.startsWith("cons_")) {

  1074                         object += ".constructor";

  1075                     }

  1076                     append("var metHan = ");

  1077                     append(accessStaticMethod(object, mn, mi));

  1078                     append('(');

  1079                     String lookup = accessClass("java_lang_invoke_MethodHandles") + "(false).findFor__Ljava_lang_invoke_MethodHandles$Lookup_2Ljava_lang_Class_2(CLS.$class)";

  1080                     append(lookup);

  1081                     append(", '").append(mi[1]).append("'");

  1082 //                    if (numArguments > 0) {

  1083 //                        append(vars[0]);

  1084 //                        for (int j = 1; j < numArguments; ++j) {

  1085 //                            append(", ");

  1086 //                            append(vars[j]);

  1087 //                        }

  1088 //                    }

  1089                     append(");");

  1090                     emit(smapper, this, "throw 'Invoke dynamic: ' + @1 + ': ' + metHan;", "" + indx);

  1091                     i += 4;

  1092                     break;

  1093                 }

  1094                 case opc_new: {

  1095                     int indx = readUShortArg(byteCodes, i);

  1096                     String ci = jc.getClassName(indx);

  1097                     emit(smapper, this, "var @1 = new @2;",

  1098                          smapper.pushA(), accessClass(mangleClassName(ci)));

  1099                     addReference(ci);

  1100                     i += 2;

  1101                     break;

  1102                 }

  1103                 case opc_newarray:

  1104                     int atype = readUByte(byteCodes, ++i);

  1105                     generateNewArray(atype, smapper);

  1106                     break;

  1107                 case opc_anewarray: {

  1108                     int type = readUShortArg(byteCodes, i);

  1109                     i += 2;

  1110                     generateANewArray(type, smapper);

  1111                     break;

  1112                 }

  1113                 case opc_multianewarray: {

  1114                     int type = readUShortArg(byteCodes, i);

  1115                     i += 2;

  1116                     i = generateMultiANewArray(type, byteCodes, i, smapper);

  1117                     break;

  1118                 }

  1119                 case opc_arraylength:

  1120                     smapper.replace(this, VarType.INTEGER, "(@1).length", smapper.getA(0));

  1121                     break;

  1122                 case opc_lastore:

  1123                     emit(smapper, this, "Array.at(@3, @2, @1);",

  1124                          smapper.popL(), smapper.popI(), smapper.popA());

  1125                     break;

  1126                 case opc_fastore:

  1127                     emit(smapper, this, "Array.at(@3, @2, @1);",

  1128                          smapper.popF(), smapper.popI(), smapper.popA());

  1129                     break;

  1130                 case opc_dastore:

  1131                     emit(smapper, this, "Array.at(@3, @2, @1);",

  1132                          smapper.popD(), smapper.popI(), smapper.popA());

  1133                     break;

  1134                 case opc_aastore:

  1135                     emit(smapper, this, "Array.at(@3, @2, @1);",

  1136                          smapper.popA(), smapper.popI(), smapper.popA());

  1137                     break;

  1138                 case opc_iastore:

  1139                 case opc_bastore:

  1140                 case opc_castore:

  1141                 case opc_sastore:

  1142                     emit(smapper, this, "Array.at(@3, @2, @1);",

  1143                          smapper.popI(), smapper.popI(), smapper.popA());

  1144                     break;

  1145                 case opc_laload:

  1146                     smapper.replace(this, VarType.LONG, "Array.at(@2, @1)",

  1147                          smapper.popI(), smapper.getA(0));

  1148                     break;

  1149                 case opc_faload:

  1150                     smapper.replace(this, VarType.FLOAT, "Array.at(@2, @1)",

  1151                          smapper.popI(), smapper.getA(0));

  1152                     break;

  1153                 case opc_daload:

  1154                     smapper.replace(this, VarType.DOUBLE, "Array.at(@2, @1)",

  1155                          smapper.popI(), smapper.getA(0));

  1156                     break;

  1157                 case opc_aaload:

  1158                     smapper.replace(this, VarType.REFERENCE, "Array.at(@2, @1)",

  1159                          smapper.popI(), smapper.getA(0));

  1160                     break;

  1161                 case opc_iaload:

  1162                 case opc_baload:

  1163                 case opc_caload:

  1164                 case opc_saload:

  1165                     smapper.replace(this, VarType.INTEGER, "Array.at(@2, @1)",

  1166                          smapper.popI(), smapper.getA(0));

  1167                     break;

  1168                 case opc_pop:

  1169                 case opc_pop2:

  1170                     smapper.pop(1);

  1171                     debug("/* pop */");

  1172                     break;

  1173                 case opc_dup: {

  1174                     final Variable v = smapper.get(0);

  1175                     if (smapper.isDirty()) {

  1176                         emit(smapper, this, "var @1 = @2;", smapper.pushT(v.getType()), v);

  1177                     } else {

  1178                         smapper.assign(this, v.getType(), v);

  1179                     }

  1180                     break;

  1181                 }

  1182                 case opc_dup2: {

  1183                     final Variable vi1 = smapper.get(0);

  1185                     if (vi1.isCategory2()) {

  1186                         emit(smapper, this, "var @1 = @2;",

  1187                              smapper.pushT(vi1.getType()), vi1);

  1188                     } else {

  1189                         final Variable vi2 = smapper.get(1);

  1190                         emit(smapper, this, "var @1 = @2, @3 = @4;",

  1191                              smapper.pushT(vi2.getType()), vi2,

  1192                              smapper.pushT(vi1.getType()), vi1);

  1193                     }

  1194                     break;

  1195                 }

  1196                 case opc_dup_x1: {

  1197                     final Variable vi1 = smapper.pop(this);

  1198                     final Variable vi2 = smapper.pop(this);

  1199                     final Variable vo3 = smapper.pushT(vi1.getType());

  1200                     final Variable vo2 = smapper.pushT(vi2.getType());

  1201                     final Variable vo1 = smapper.pushT(vi1.getType());

  1203                     emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6;",

  1204                          vo1, vi1, vo2, vi2, vo3, vo1);

  1205                     break;

  1206                 }

  1207                 case opc_dup2_x1: {

  1208                     final Variable vi1 = smapper.pop(this);

  1209                     final Variable vi2 = smapper.pop(this);

  1211                     if (vi1.isCategory2()) {

  1212                         final Variable vo3 = smapper.pushT(vi1.getType());

  1213                         final Variable vo2 = smapper.pushT(vi2.getType());

  1214                         final Variable vo1 = smapper.pushT(vi1.getType());

  1216                         emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6;",

  1217                              vo1, vi1, vo2, vi2, vo3, vo1);

  1218                     } else {

  1219                         final Variable vi3 = smapper.pop(this);

  1220                         final Variable vo5 = smapper.pushT(vi2.getType());

  1221                         final Variable vo4 = smapper.pushT(vi1.getType());

  1222                         final Variable vo3 = smapper.pushT(vi3.getType());

  1223                         final Variable vo2 = smapper.pushT(vi2.getType());

  1224                         final Variable vo1 = smapper.pushT(vi1.getType());

  1226                         emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6,",

  1227                              vo1, vi1, vo2, vi2, vo3, vi3);

  1228                         emit(smapper, this, " @1 = @2, @3 = @4;",

  1229                              vo4, vo1, vo5, vo2);

  1230                     }

  1231                     break;

  1232                 }

  1233                 case opc_dup_x2: {

  1234                     final Variable vi1 = smapper.pop(this);

  1235                     final Variable vi2 = smapper.pop(this);

  1237                     if (vi2.isCategory2()) {

  1238                         final Variable vo3 = smapper.pushT(vi1.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, vo1);

  1244                     } else {

  1245                         final Variable vi3 = smapper.pop(this);

  1246                         final Variable vo4 = smapper.pushT(vi1.getType());

  1247                         final Variable vo3 = smapper.pushT(vi3.getType());

  1248                         final Variable vo2 = smapper.pushT(vi2.getType());

  1249                         final Variable vo1 = smapper.pushT(vi1.getType());

  1251                         emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6, @7 = @8;",

  1252                              vo1, vi1, vo2, vi2, vo3, vi3, vo4, vo1);

  1253                     }

  1254                     break;

  1255                 }

  1256                 case opc_dup2_x2: {

  1257                     final Variable vi1 = smapper.pop(this);

  1258                     final Variable vi2 = smapper.pop(this);

  1260                     if (vi1.isCategory2()) {

  1261                         if (vi2.isCategory2()) {

  1262                             final Variable vo3 = smapper.pushT(vi1.getType());

  1263                             final Variable vo2 = smapper.pushT(vi2.getType());

  1264                             final Variable vo1 = smapper.pushT(vi1.getType());

  1266                             emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6;",

  1267                                  vo1, vi1, vo2, vi2, vo3, vo1);

  1268                         } else {

  1269                             final Variable vi3 = smapper.pop(this);

  1270                             final Variable vo4 = smapper.pushT(vi1.getType());

  1271                             final Variable vo3 = smapper.pushT(vi3.getType());

  1272                             final Variable vo2 = smapper.pushT(vi2.getType());

  1273                             final Variable vo1 = smapper.pushT(vi1.getType());

  1275                             emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6, @7 = @8;",

  1276                                  vo1, vi1, vo2, vi2, vo3, vi3, vo4, vo1);

  1277                         }

  1278                     } else {

  1279                         final Variable vi3 = smapper.pop(this);

  1281                         if (vi3.isCategory2()) {

  1282                             final Variable vo5 = smapper.pushT(vi2.getType());

  1283                             final Variable vo4 = smapper.pushT(vi1.getType());

  1284                             final Variable vo3 = smapper.pushT(vi3.getType());

  1285                             final Variable vo2 = smapper.pushT(vi2.getType());

  1286                             final Variable vo1 = smapper.pushT(vi1.getType());

  1288                             emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6,",

  1289                                  vo1, vi1, vo2, vi2, vo3, vi3);

  1290                             emit(smapper, this, " @1 = @2, @3 = @4;",

  1291                                  vo4, vo1, vo5, vo2);

  1292                         } else {

  1293                             final Variable vi4 = smapper.pop(this);

  1294                             final Variable vo6 = smapper.pushT(vi2.getType());

  1295                             final Variable vo5 = smapper.pushT(vi1.getType());

  1296                             final Variable vo4 = smapper.pushT(vi4.getType());

  1297                             final Variable vo3 = smapper.pushT(vi3.getType());

  1298                             final Variable vo2 = smapper.pushT(vi2.getType());

  1299                             final Variable vo1 = smapper.pushT(vi1.getType());

  1301                             emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6, @7 = @8,",

  1302                                  vo1, vi1, vo2, vi2, vo3, vi3, vo4, vi4);

  1303                             emit(smapper, this, " @1 = @2, @3 = @4;",

  1304                                  vo5, vo1, vo6, vo2);

  1305                         }

  1306                     }

  1307                     break;

  1308                 }

  1309                 case opc_swap: {

  1310                     final Variable vi1 = smapper.get(0);

  1311                     final Variable vi2 = smapper.get(1);

  1313                     if (vi1.getType() == vi2.getType()) {

  1314                         final Variable tmp = smapper.pushT(vi1.getType());

  1316                         emit(smapper, this, "var @1 = @2, @2 = @3, @3 = @1;",

  1317                              tmp, vi1, vi2);

  1318                         smapper.pop(1);

  1319                     } else {

  1320                         smapper.pop(2);

  1321                         smapper.pushT(vi1.getType());

  1322                         smapper.pushT(vi2.getType());

  1323                     }

  1324                     break;

  1325                 }

  1326                 case opc_bipush:

  1327                     smapper.assign(this, VarType.INTEGER,

  1328                         "(" + Integer.toString(byteCodes[++i]) + ")");

  1329                     break;

  1330                 case opc_sipush:

  1331                     smapper.assign(this, VarType.INTEGER,

  1332                         "(" + Integer.toString(readShortArg(byteCodes, i)) + ")"

  1333                     );

  1334                     i += 2;

  1335                     break;

  1336                 case opc_getfield: {

  1337                     int indx = readUShortArg(byteCodes, i);

  1338                     String[] fi = jc.getFieldInfoName(indx);

  1339                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1340                     final String mangleClass = mangleClassName(fi[0]);

  1341                     final String mangleClassAccess = accessClass(mangleClass);

  1342                     smapper.replace(this, type, "@2.call(@1)",

  1343                          smapper.getA(0),

  1344                          accessField(mangleClassAccess + "(false)",

  1345                                      "_" + fi[1], fi)

  1346                     );

  1347                     i += 2;

  1348                     break;

  1349                 }

  1350                 case opc_putfield: {

  1351                     int indx = readUShortArg(byteCodes, i);

  1352                     String[] fi = jc.getFieldInfoName(indx);

  1353                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1354                     final String mangleClass = mangleClassName(fi[0]);

  1355                     final String mangleClassAccess = accessClass(mangleClass);

  1356                     emit(smapper, this, "@3.call(@2, @1);",

  1357                          smapper.popT(type),

  1358                          smapper.popA(),

  1359                          accessField(mangleClassAccess + "(false)",

  1360                                      "_" + fi[1], fi));

  1361                     i += 2;

  1362                     break;

  1363                 }

  1364                 case opc_getstatic: {

  1365                     int indx = readUShortArg(byteCodes, i);

  1366                     String[] fi = jc.getFieldInfoName(indx);

  1367                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1368                     String ac = accessClass(mangleClassName(fi[0]));

  1369                     String af = accessField(ac + "(false)", "_" + fi[1], fi);

  1370                     smapper.assign(this, type, af + "()");

  1371                     i += 2;

  1372                     addReference(fi[0]);

  1373                     break;

  1374                 }

  1375                 case opc_putstatic: {

  1376                     int indx = readUShortArg(byteCodes, i);

  1377                     String[] fi = jc.getFieldInfoName(indx);

  1378                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1379                     emit(smapper, this, "@1(false)._@2(@3);",

  1380                          accessClass(mangleClassName(fi[0])), fi[1],

  1381                          smapper.popT(type));

  1382                     i += 2;

  1383                     addReference(fi[0]);

  1384                     break;

  1385                 }

  1386                 case opc_checkcast: {

  1387                     int indx = readUShortArg(byteCodes, i);

  1388                     generateCheckcast(indx, smapper);

  1389                     i += 2;

  1390                     break;

  1391                 }

  1392                 case opc_instanceof: {

  1393                     int indx = readUShortArg(byteCodes, i);

  1394                     generateInstanceOf(indx, smapper);

  1395                     i += 2;

  1396                     break;

  1397                 }

  1398                 case opc_athrow: {

  1399                     final CharSequence v = smapper.popA();

  1400                     smapper.clear();

  1402                     emit(smapper, this, "{ var @1 = @2; throw @2; }",

  1403                          smapper.pushA(), v);

  1404                     break;

  1405                 }

  1407                 case opc_monitorenter: {

  1408                     debug("/* monitor enter */");

  1409                     smapper.popA();

  1410                     break;

  1411                 }

  1413                 case opc_monitorexit: {

  1414                     debug("/* monitor exit */");

  1415                     smapper.popA();

  1416                     break;

  1417                 }

  1419                 case opc_wide:

  1420                     wide = true;

  1421                     break;

  1423                 default: {

  1424                     wide = false;

  1425                     emit(smapper, this, "throw 'unknown bytecode @1';",

  1426                          Integer.toString(c));

  1427                 }

  1428             }

  1429             if (debug(" //")) {

  1430                 generateByteCodeComment(prev, i, byteCodes);

  1431             }

  1432             if (outChanged) {

  1433                 append("\n");

  1434             }

  1435         }

  1436         if (previousTrap != null) {

  1437             generateCatch(previousTrap, byteCodes.length, topMostLabel);

  1438         }

  1439         if (didBranches) {

  1440             append("\n    }\n");

  1441         }

  1442         while (openBraces-- > 0) {

  1443             append('}');

  1444         }

  1445         if (obj) {

  1446             append("\n}});");

  1447         } else {

  1448             append("\n};");

  1449         }

  1450     }

  1452     private int generateIf(StackMapper mapper, byte[] byteCodes,

  1453         int i, final CharSequence v2, final CharSequence v1,

  1454         final String test, int topMostLabel

  1455     ) throws IOException {

  1456         mapper.flush(this);

  1457         int indx = i + readShortArg(byteCodes, i);

  1458         append("if ((").append(v1)

  1459            .append(") ").append(test).append(" (")

  1460            .append(v2).append(")) ");

  1461         goTo(this, i, indx, topMostLabel);

  1462         return i + 2;

  1463     }

  1465     private int readInt4(byte[] byteCodes, int offset) {

  1466         final int d = byteCodes[offset + 0] << 24;

  1467         final int c = byteCodes[offset + 1] << 16;

  1468         final int b = byteCodes[offset + 2] << 8;

  1469         final int a = byteCodes[offset + 3];

  1470         return (d & 0xff000000) | (c & 0xff0000) | (b & 0xff00) | (a & 0xff);

  1471     }

  1472     private static int readUByte(byte[] byteCodes, int offset) {

  1473         return byteCodes[offset] & 0xff;

  1474     }

  1476     private static int readUShort(byte[] byteCodes, int offset) {

  1477         return ((byteCodes[offset] & 0xff) << 8)

  1478                     | (byteCodes[offset + 1] & 0xff);

  1479     }

  1480     private static int readUShortArg(byte[] byteCodes, int offsetInstruction) {

  1481         return readUShort(byteCodes, offsetInstruction + 1);

  1482     }

  1484     private static int readShort(byte[] byteCodes, int offset) {

  1485         int signed = byteCodes[offset];

  1486         byte b0 = (byte)signed;

  1487         return (b0 << 8) | (byteCodes[offset + 1] & 0xff);

  1488     }

  1489     private static int readShortArg(byte[] byteCodes, int offsetInstruction) {

  1490         return readShort(byteCodes, offsetInstruction + 1);

  1491     }

  1493     private static void countArgs(String descriptor, char[] returnType, StringBuilder sig, StringBuilder cnt) {

  1494         int i = 0;

  1495         Boolean count = null;

  1496         boolean array = false;

  1497         sig.append("__");

  1498         int firstPos = sig.length();

  1499         while (i < descriptor.length()) {

  1500             char ch = descriptor.charAt(i++);

  1501             switch (ch) {

  1502                 case '(':

  1503                     count = true;

  1504                     continue;

  1505                 case ')':

  1506                     count = false;

  1507                     continue;

  1508                 case 'B':

  1509                 case 'C':

  1510                 case 'D':

  1511                 case 'F':

  1512                 case 'I':

  1513                 case 'J':

  1514                 case 'S':

  1515                 case 'Z':

  1516                     if (count) {

  1517                         if (array) {

  1518                             sig.append("_3");

  1519                         }

  1520                         sig.append(ch);

  1521                         if (ch == 'J' || ch == 'D') {

  1522                             cnt.append('1');

  1523                         } else {

  1524                             cnt.append('0');

  1525                         }

  1526                     } else {

  1527                         sig.insert(firstPos, ch);

  1528                         if (array) {

  1529                             returnType[0] = '[';

  1530                             sig.insert(firstPos, "_3");

  1531                         } else {

  1532                             returnType[0] = ch;

  1533                         }

  1534                     }

  1535                     array = false;

  1536                     continue;

  1537                 case 'V':

  1538                     assert !count;

  1539                     returnType[0] = 'V';

  1540                     sig.insert(firstPos, 'V');

  1541                     continue;

  1542                 case 'L':

  1543                     int next = descriptor.indexOf(';', i);

  1544                     String realSig = mangleSig(descriptor, i - 1, next + 1);

  1545                     if (count) {

  1546                         if (array) {

  1547                             sig.append("_3");

  1548                         }

  1549                         sig.append(realSig);

  1550                         cnt.append('0');

  1551                     } else {

  1552                         sig.insert(firstPos, realSig);

  1553                         if (array) {

  1554                             sig.insert(firstPos, "_3");

  1555                         }

  1556                         returnType[0] = 'L';

  1557                     }

  1558                     i = next + 1;

  1559                     array = false;

  1560                     continue;

  1561                 case '[':

  1562                     array = true;

  1563                     continue;

  1564                 default:

  1565                     throw new IllegalStateException("Invalid char: " + ch);

  1566             }

  1567         }

  1568     }

  1570     static String mangleSig(String sig) {

  1571         return mangleSig(sig, 0, sig.length());

  1572     }

  1574     private static String mangleMethodName(String name) {

  1575         StringBuilder sb = new StringBuilder(name.length() * 2);

  1576         int last = name.length();

  1577         for (int i = 0; i < last; i++) {

  1578             final char ch = name.charAt(i);

  1579             switch (ch) {

  1580                 case '_': sb.append("_1"); break;

  1581                 default: sb.append(ch); break;

  1582             }

  1583         }

  1584         return sb.toString();

  1585     }

  1586     private static String mangleSig(String txt, int first, int last) {

  1587         StringBuilder sb = new StringBuilder((last - first) * 2);

  1588         for (int i = first; i < last; i++) {

  1589             final char ch = txt.charAt(i);

  1590             switch (ch) {

  1591                 case '/': sb.append('_'); break;

  1592                 case '_': sb.append("_1"); break;

  1593                 case ';': sb.append("_2"); break;

  1594                 case '[': sb.append("_3"); break;

  1595                 default:

  1596                     if (Character.isJavaIdentifierPart(ch)) {

  1597                         sb.append(ch);

  1598                     } else {

  1599                         sb.append("_0");

  1600                         String hex = Integer.toHexString(ch).toLowerCase();

  1601                         for (int m = hex.length(); m < 4; m++) {

  1602                             sb.append("0");

  1603                         }

  1604                         sb.append(hex);

  1605                     }

  1606                 break;

  1607             }

  1608         }

  1609         return sb.toString();

  1610     }

  1612     private static String mangleClassName(String name) {

  1613         return mangleSig(name);

  1614     }

  1616     private static String findMethodName(MethodData m, StringBuilder cnt) {

  1617         StringBuilder name = new StringBuilder();

  1618         if ("<init>".equals(m.getName())) { // NOI18N

  1619             name.append("cons"); // NOI18N

  1620         } else if ("<clinit>".equals(m.getName())) { // NOI18N

  1621             name.append("class"); // NOI18N

  1622         } else {

  1623             name.append(mangleMethodName(m.getName()));

  1624         }

  1626         countArgs(m.getInternalSig(), new char[1], name, cnt);

  1627         return name.toString();

  1628     }

  1630     static String findMethodName(String[] mi, StringBuilder cnt, char[] returnType) {

  1631         StringBuilder name = new StringBuilder();

  1632         String descr = mi[2];//mi.getDescriptor();

  1633         String nm= mi[1];

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

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

  1636         } else {

  1637             name.append(mangleMethodName(nm));

  1638         }

  1639         countArgs(descr, returnType, name, cnt);

  1640         return name.toString();

  1641     }

  1643     private int invokeStaticMethod(byte[] byteCodes, int i, final StackMapper mapper, boolean isStatic)

  1644     throws IOException {

  1645         int methodIndex = readUShortArg(byteCodes, i);

  1646         String[] mi = jc.getFieldInfoName(methodIndex);

  1647         char[] returnType = { 'V' };

  1648         StringBuilder cnt = new StringBuilder();

  1649         String mn = findMethodName(mi, cnt, returnType);

  1651         final int numArguments = isStatic ? cnt.length() : cnt.length() + 1;

  1652         final CharSequence[] vars = new CharSequence[numArguments];

  1654         for (int j = numArguments - 1; j >= 0; --j) {

  1655             vars[j] = mapper.popValue();

  1656         }

  1658         if (returnType[0] != 'V') {

  1659             mapper.flush(this);

  1660             append("var ")

  1661                .append(mapper.pushT(VarType.fromFieldType(returnType[0])))

  1662                .append(" = ");

  1663         }

  1665         final String in = mi[0];

  1666         String mcn;

  1667         if (callbacks && in.equals("org/apidesign/html/boot/spi/Fn")) {

  1668             mcn = "java_lang_Class";

  1669         } else {

  1670             mcn = mangleClassName(in);

  1671         }

  1672         String object = accessClass(mcn) + "(false)";

  1673         if (mn.startsWith("cons_")) {

  1674             object += ".constructor";

  1675         }

  1676         append(accessStaticMethod(object, mn, mi));

  1677         if (isStatic) {

  1678             append('(');

  1679         } else {

  1680             append(".call(");

  1681         }

  1682         if (numArguments > 0) {

  1683             append(vars[0]);

  1684             for (int j = 1; j < numArguments; ++j) {

  1685                 append(", ");

  1686                 append(vars[j]);

  1687             }

  1688         }

  1689         append(");");

  1690         i += 2;

  1691         addReference(in);

  1692         return i;

  1693     }

  1694     private int invokeVirtualMethod(byte[] byteCodes, int i, final StackMapper mapper)

  1695     throws IOException {

  1696         int methodIndex = readUShortArg(byteCodes, i);

  1697         String[] mi = jc.getFieldInfoName(methodIndex);

  1698         char[] returnType = { 'V' };

  1699         StringBuilder cnt = new StringBuilder();

  1700         String mn = findMethodName(mi, cnt, returnType);

  1702         final int numArguments = cnt.length() + 1;

  1703         final CharSequence[] vars = new CharSequence[numArguments];

  1705         for (int j = numArguments - 1; j >= 0; --j) {

  1706             vars[j] = mapper.popValue();

  1707         }

  1709         if (returnType[0] != 'V') {

  1710             append("var ")

  1711                .append(mapper.pushT(VarType.fromFieldType(returnType[0])))

  1712                .append(" = ");

  1713         }

  1715         append(accessVirtualMethod(vars[0].toString(), mn, mi, numArguments));

  1716         String sep = "";

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

  1718             append(sep);

  1719             append(vars[j]);

  1720             sep = ", ";

  1721         }

  1722         append(");");

  1723         i += 2;

  1724         return i;

  1725     }

  1727     private void addReference(String cn) throws IOException {

  1728         if (requireReference(cn)) {

  1729             debug(" /* needs " + cn + " */");

  1730         }

  1731     }

  1733     private void outType(String d, StringBuilder out) {

  1734         int arr = 0;

  1735         while (d.charAt(0) == '[') {

  1736             out.append('A');

  1737             d = d.substring(1);

  1738         }

  1739         if (d.charAt(0) == 'L') {

  1740             assert d.charAt(d.length() - 1) == ';';

  1741             out.append(d.replace('/', '_').substring(0, d.length() - 1));

  1742         } else {

  1743             out.append(d);

  1744         }

  1745     }

  1747     private String encodeConstant(int entryIndex) throws IOException {

  1748         String[] classRef = { null };

  1749         String s = jc.stringValue(entryIndex, classRef);

  1750         if (classRef[0] != null) {

  1751             if (classRef[0].startsWith("[")) {

  1752                 s = accessClass("java_lang_Class") + "(false)['forName__Ljava_lang_Class_2Ljava_lang_String_2']('" + classRef[0] + "')";

  1753             } else {

  1754                 addReference(classRef[0]);

  1755                 s = accessClass(mangleClassName(s)) + "(false).constructor.$class";

  1756             }

  1757         }

  1758         return s;

  1759     }

  1761     private String javaScriptBody(String destObject, MethodData m, boolean isStatic) throws IOException {

  1762         byte[] arr = m.findAnnotationData(true);

  1763         if (arr == null) {

  1764             return null;

  1765         }

  1766         final String jvmType = "Lorg/apidesign/bck2brwsr/core/JavaScriptBody;";

  1767         final String htmlType = "Lnet/java/html/js/JavaScriptBody;";

  1768         class P extends AnnotationParser {

  1769             public P() {

  1770                 super(false, true);

  1771             }

  1773             int cnt;

  1774             String[] args = new String[30];

  1775             String body;

  1776             boolean javacall;

  1777             boolean html4j;

  1779             @Override

  1780             protected void visitAttr(String type, String attr, String at, String value) {

  1781                 if (type.equals(jvmType)) {

  1782                     if ("body".equals(attr)) {

  1783                         body = value;

  1784                     } else if ("args".equals(attr)) {

  1785                         args[cnt++] = value;

  1786                     } else {

  1787                         throw new IllegalArgumentException(attr);

  1788                     }

  1789                 }

  1790                 if (type.equals(htmlType)) {

  1791                     html4j = true;

  1792                     if ("body".equals(attr)) {

  1793                         body = value;

  1794                     } else if ("args".equals(attr)) {

  1795                         args[cnt++] = value;

  1796                     } else if ("javacall".equals(attr)) {

  1797                         javacall = "1".equals(value);

  1798                     } else if ("wait4js".equals(attr)) {

  1799                         // ignore, we always invoke synchronously

  1800                     } else {

  1801                         throw new IllegalArgumentException(attr);

  1802                     }

  1803                 }

  1804             }

  1805         }

  1806         P p = new P();

  1807         p.parse(arr, jc);

  1808         if (p.body == null) {

  1809             return null;

  1810         }

  1811         StringBuilder cnt = new StringBuilder();

  1812         final String mn = findMethodName(m, cnt);

  1813         append(destObject).append(".").append(mn);

  1814         append(" = function(");

  1815         String space = "";

  1816         int index = 0;

  1817         StringBuilder toValue = new StringBuilder();

  1818         for (int i = 0; i < cnt.length(); i++) {

  1819             append(space);

  1820             space = outputArg(this, p.args, index);

  1821             if (p.html4j && space.length() > 0) {

  1822                 toValue.append("\n  ").append(p.args[index]).append(" = ")

  1823                     .append(accessClass("java_lang_Class")).append("(false).toJS(").

  1824                     append(p.args[index]).append(");");

  1825             }

  1826             index++;

  1827         }

  1828         append(") {").append("\n");

  1829         append(toValue.toString());

  1830         if (p.javacall) {

  1831             int lastSlash = jc.getClassName().lastIndexOf('/');

  1832             final String pkg = jc.getClassName().substring(0, lastSlash);

  1833             append(mangleCallbacks(pkg, p.body));

  1834             requireReference(pkg + "/$JsCallbacks$");

  1835         } else {

  1836             append(p.body);

  1837         }

  1838         append("\n}\n");

  1839         return mn;

  1840     }

  1842     private static CharSequence mangleCallbacks(String pkgName, String body) {

  1843         StringBuilder sb = new StringBuilder();

  1844         int pos = 0;

  1845         for (;;) {

  1846             int next = body.indexOf(".@", pos);

  1847             if (next == -1) {

  1848                 sb.append(body.substring(pos));

  1849                 body = sb.toString();

  1850                 break;

  1851             }

  1852             int ident = next;

  1853             while (ident > 0) {

  1854                 if (!Character.isJavaIdentifierPart(body.charAt(--ident))) {

  1855                     ident++;

  1856                     break;

  1857                 }

  1858             }

  1859             String refId = body.substring(ident, next);

  1861             sb.append(body.substring(pos, ident));

  1863             int sigBeg = body.indexOf('(', next);

  1864             int sigEnd = body.indexOf(')', sigBeg);

  1865             int colon4 = body.indexOf("::", next);

  1866             if (sigBeg == -1 || sigEnd == -1 || colon4 == -1) {

  1867                 throw new IllegalStateException("Malformed body " + body);

  1868             }

  1869             String fqn = body.substring(next + 2, colon4);

  1870             String method = body.substring(colon4 + 2, sigBeg);

  1871             String params = body.substring(sigBeg, sigEnd + 1);

  1873             int paramBeg = body.indexOf('(', sigEnd + 1);

  1875             sb.append("vm.").append(pkgName.replace('/', '_')).append("_$JsCallbacks$(false)._VM().");

  1876             sb.append(mangleJsCallbacks(fqn, method, params, false));

  1877             sb.append("(").append(refId);

  1878             if (body.charAt(paramBeg + 1) != ')') {

  1879                 sb.append(",");

  1880             }

  1881             pos = paramBeg + 1;

  1882         }

  1883         sb = null;

  1884         pos = 0;

  1885         for (;;) {

  1886             int next = body.indexOf("@", pos);

  1887             if (next == -1) {

  1888                 if (sb == null) {

  1889                     return body;

  1890                 }

  1891                 sb.append(body.substring(pos));

  1892                 return sb;

  1893             }

  1894             if (sb == null) {

  1895                 sb = new StringBuilder();

  1896             }

  1898             sb.append(body.substring(pos, next));

  1900             int sigBeg = body.indexOf('(', next);

  1901             int sigEnd = body.indexOf(')', sigBeg);

  1902             int colon4 = body.indexOf("::", next);

  1903             if (sigBeg == -1 || sigEnd == -1 || colon4 == -1) {

  1904                 throw new IllegalStateException("Malformed body " + body);

  1905             }

  1906             String fqn = body.substring(next + 1, colon4);

  1907             String method = body.substring(colon4 + 2, sigBeg);

  1908             String params = body.substring(sigBeg, sigEnd + 1);

  1910             int paramBeg = body.indexOf('(', sigEnd + 1);

  1912             sb.append("vm.").append(pkgName.replace('/', '_')).append("_$JsCallbacks$(false)._VM().");

  1913             sb.append(mangleJsCallbacks(fqn, method, params, true));

  1914             sb.append("(");

  1915             pos = paramBeg + 1;

  1916         }

  1917     }

  1919     static String mangleJsCallbacks(String fqn, String method, String params, boolean isStatic) {

  1920         if (params.startsWith("(")) {

  1921             params = params.substring(1);

  1922         }

  1923         if (params.endsWith(")")) {

  1924             params = params.substring(0, params.length() - 1);

  1925         }

  1926         StringBuilder sb = new StringBuilder();

  1927         final String fqnu = fqn.replace('.', '_');

  1928         final String rfqn = mangleClassName(fqnu);

  1929         final String rm = mangleMethodName(method);

  1930         final String srp;

  1931         {

  1932             StringBuilder pb = new StringBuilder();

  1933             int len = params.length();

  1934             int indx = 0;

  1935             while (indx < len) {

  1936                 char ch = params.charAt(indx);

  1937                 if (ch == '[' || ch == 'L') {

  1938                     pb.append("Ljava/lang/Object;");

  1939                     indx = params.indexOf(';', indx) + 1;

  1940                 } else {

  1941                     pb.append(ch);

  1942                     indx++;

  1943                 }

  1944             }

  1945             srp = mangleSig(pb.toString());

  1946         }

  1947         final String rp = mangleSig(params);

  1948         final String mrp = mangleMethodName(rp);

  1949         sb.append(rfqn).append("$").append(rm).

  1950             append('$').append(mrp).append("__Ljava_lang_Object_2");

  1951         if (!isStatic) {

  1952             sb.append('L').append(fqnu).append("_2");

  1953         }

  1954         sb.append(srp);

  1955         return sb.toString();

  1956     }

  1958     private static String className(ClassData jc) {

  1959         //return jc.getName().getInternalName().replace('/', '_');

  1960         return mangleClassName(jc.getClassName());

  1961     }

  1963     private static String[] findAnnotation(

  1964         byte[] arr, ClassData cd, final String className,

  1965         final String... attrNames

  1966     ) throws IOException {

  1967         if (arr == null) {

  1968             return null;

  1969         }

  1970         final String[] values = new String[attrNames.length];

  1971         final boolean[] found = { false };

  1972         final String jvmType = "L" + className.replace('.', '/') + ";";

  1973         AnnotationParser ap = new AnnotationParser(false, true) {

  1974             @Override

  1975             protected void visitAttr(String type, String attr, String at, String value) {

  1976                 if (type.equals(jvmType)) {

  1977                     found[0] = true;

  1978                     for (int i = 0; i < attrNames.length; i++) {

  1979                         if (attrNames[i].equals(attr)) {

  1980                             values[i] = value;

  1981                         }

  1982                     }

  1983                 }

  1984             }

  1986         };

  1987         ap.parse(arr, cd);

  1988         return found[0] ? values : null;

  1989     }

  1991     private CharSequence initField(FieldData v) {

  1992         final String is = v.getInternalSig();

  1993         if (is.length() == 1) {

  1994             switch (is.charAt(0)) {

  1995                 case 'S':

  1996                 case 'J':

  1997                 case 'B':

  1998                 case 'Z':

  1999                 case 'C':

  2000                 case 'I': return " = 0;";

  2001                 case 'F':

  2002                 case 'D': return " = 0.0;";

  2003                 default:

  2004                     throw new IllegalStateException(is);

  2005             }

  2006         }

  2007         return " = null;";

  2008     }

  2010     private void generateAnno(ClassData cd, byte[] data) throws IOException {

  2011         AnnotationParser ap = new AnnotationParser(true, false) {

  2012             int[] cnt = new int[32];

  2013             int depth;

  2015             @Override

  2016             protected void visitAnnotationStart(String attrType, boolean top) throws IOException {

  2017                 final String slashType = attrType.substring(1, attrType.length() - 1);

  2018                 requireReference(slashType);

  2020                 if (cnt[depth]++ > 0) {

  2021                     append(",");

  2022                 }

  2023                 if (top) {

  2024                     append('"').append(attrType).append("\" : ");

  2025                 }

  2026                 append("{\n");

  2027                 cnt[++depth] = 0;

  2028             }

  2030             @Override

  2031             protected void visitAnnotationEnd(String type, boolean top) throws IOException {

  2032                 append("\n}\n");

  2033                 depth--;

  2034             }

  2036             @Override

  2037             protected void visitValueStart(String attrName, char type) throws IOException {

  2038                 if (cnt[depth]++ > 0) {

  2039                     append(",\n");

  2040                 }

  2041                 cnt[++depth] = 0;

  2042                 if (attrName != null) {

  2043                     append('"').append(attrName).append("\" : ");

  2044                 }

  2045                 if (type == '[') {

  2046                     append("[");

  2047                 }

  2048             }

  2050             @Override

  2051             protected void visitValueEnd(String attrName, char type) throws IOException {

  2052                 if (type == '[') {

  2053                     append("]");

  2054                 }

  2055                 depth--;

  2056             }

  2058             @Override

  2059             protected void visitAttr(String type, String attr, String attrType, String value)

  2060             throws IOException {

  2061                 if (attr == null && value == null) {

  2062                     return;

  2063                 }

  2064                 append(value);

  2065             }

  2067             @Override

  2068             protected void visitEnumAttr(String type, String attr, String attrType, String value)

  2069             throws IOException {

  2070                 final String slashType = attrType.substring(1, attrType.length() - 1);

  2071                 requireReference(slashType);

  2073                 final String cn = mangleClassName(slashType);

  2074                 append(accessClass(cn))

  2075                    .append("(false)['valueOf__L").

  2076                     append(cn).

  2077                     append("_2Ljava_lang_String_2']('").

  2078                     append(value).

  2079                     append("')");

  2080             }

  2081         };

  2082         ap.parse(data, cd);

  2083     }

  2085     private static String outputArg(Appendable out, String[] args, int indx) throws IOException {

  2086         final String name = args[indx];

  2087         if (name == null) {

  2088             return "";

  2089         }

  2090         if (name.contains(",")) {

  2091             throw new IOException("Wrong parameter with ',': " + name);

  2092         }

  2093         out.append(name);

  2094         return ",";

  2095     }

  2097     final void emitNoFlush(

  2098         StackMapper sm,

  2099         final String format, final CharSequence... params

  2100     ) throws IOException {

  2101         emitImpl(this, format, params);

  2102     }

  2103     static final void emit(

  2104         StackMapper sm,

  2105         final Appendable out,

  2106         final String format, final CharSequence... params

  2107     ) throws IOException {

  2108         sm.flush(out);

  2109         emitImpl(out, format, params);

  2110     }

  2111     static void emitImpl(final Appendable out,

  2112                              final String format,

  2113                              final CharSequence... params) throws IOException {

  2114         final int length = format.length();

  2116         int processed = 0;

  2117         int paramOffset = format.indexOf('@');

  2118         while ((paramOffset != -1) && (paramOffset < (length - 1))) {

  2119             final char paramChar = format.charAt(paramOffset + 1);

  2120             if ((paramChar >= '1') && (paramChar <= '9')) {

  2121                 final int paramIndex = paramChar - '0' - 1;

  2123                 out.append(format, processed, paramOffset);

  2124                 out.append(params[paramIndex]);

  2126                 ++paramOffset;

  2127                 processed = paramOffset + 1;

  2128             }

  2130             paramOffset = format.indexOf('@', paramOffset + 1);

  2131         }

  2133         out.append(format, processed, length);

  2134     }

  2136     private void generateCatch(TrapData[] traps, int current, int topMostLabel) throws IOException {

  2137         append("} catch (e) {\n");

  2138         int finallyPC = -1;

  2139         for (TrapData e : traps) {

  2140             if (e == null) {

  2141                 break;

  2142             }

  2143             if (e.catch_cpx != 0) { //not finally

  2144                 final String classInternalName = jc.getClassName(e.catch_cpx);

  2145                 addReference(classInternalName);

  2146                 append("e = vm.java_lang_Class(false).bck2BrwsrThrwrbl(e);");

  2147                 append("if (e['$instOf_" + classInternalName.replace('/', '_') + "']) {");

  2148                 append("var stA0 = e;");

  2149                 goTo(this, current, e.handler_pc, topMostLabel);

  2150                 append("}\n");

  2151             } else {

  2152                 finallyPC = e.handler_pc;

  2153             }

  2154         }

  2155         if (finallyPC == -1) {

  2156             append("throw e;");

  2157         } else {

  2158             append("var stA0 = e;");

  2159             goTo(this, current, finallyPC, topMostLabel);

  2160         }

  2161         append("\n}");

  2162     }

  2164     private static void goTo(Appendable out, int current, int to, int canBack) throws IOException {

  2165         if (to < current) {

  2166             if (canBack < to) {

  2167                 out.append("{ gt = 0; continue X_" + to + "; }");

  2168             } else {

  2169                 out.append("{ gt = " + to + "; continue X_0; }");

  2170             }

  2171         } else {

  2172             out.append("{ gt = " + to + "; break IF; }");

  2173         }

  2174     }

  2176     private static void emitIf(

  2177         StackMapper sm,

  2178         Appendable out, String pattern,

  2179         CharSequence param,

  2180         int current, int to, int canBack

  2181     ) throws IOException {

  2182         sm.flush(out);

  2183         emitImpl(out, pattern, param);

  2184         goTo(out, current, to, canBack);

  2185     }

  2187     private void generateNewArray(int atype, final StackMapper smapper) throws IOException, IllegalStateException {

  2188         String jvmType;

  2189         switch (atype) {

  2190             case 4: jvmType = "[Z"; break;

  2191             case 5: jvmType = "[C"; break;

  2192             case 6: jvmType = "[F"; break;

  2193             case 7: jvmType = "[D"; break;

  2194             case 8: jvmType = "[B"; break;

  2195             case 9: jvmType = "[S"; break;

  2196             case 10: jvmType = "[I"; break;

  2197             case 11: jvmType = "[J"; break;

  2198             default: throw new IllegalStateException("Array type: " + atype);

  2199         }

  2200         emit(smapper, this,

  2201             "var @2 = Array.prototype['newArray__Ljava_lang_Object_2ZLjava_lang_String_2Ljava_lang_Object_2I'](true, '@3', null, @1);",

  2202              smapper.popI(), smapper.pushA(), jvmType);

  2203     }

  2205     private void generateANewArray(int type, final StackMapper smapper) throws IOException {

  2206         String typeName = jc.getClassName(type);

  2207         String ref = "null";

  2208         if (typeName.startsWith("[")) {

  2209             typeName = "'[" + typeName + "'";

  2210         } else {

  2211             ref = "vm." + mangleClassName(typeName);

  2212             typeName = "'[L" + typeName + ";'";

  2213         }

  2214         emit(smapper, this,

  2215             "var @2 = Array.prototype['newArray__Ljava_lang_Object_2ZLjava_lang_String_2Ljava_lang_Object_2I'](false, @3, @4, @1);",

  2216              smapper.popI(), smapper.pushA(), typeName, ref);

  2217     }

  2219     private int generateMultiANewArray(int type, final byte[] byteCodes, int i, final StackMapper smapper) throws IOException {

  2220         String typeName = jc.getClassName(type);

  2221         int dim = readUByte(byteCodes, ++i);

  2222         StringBuilder dims = new StringBuilder();

  2223         dims.append('[');

  2224         for (int d = 0; d < dim; d++) {

  2225             if (d != 0) {

  2226                 dims.insert(1, ",");

  2227             }

  2228             dims.insert(1, smapper.popI());

  2229         }

  2230         dims.append(']');

  2231         String fn = "null";

  2232         if (typeName.charAt(dim) == 'L') {

  2233             fn = "vm." + mangleClassName(typeName.substring(dim + 1, typeName.length() - 1));

  2234         }

  2235         emit(smapper, this,

  2236             "var @2 = Array.prototype['multiNewArray__Ljava_lang_Object_2Ljava_lang_String_2_3ILjava_lang_Object_2']('@3', @1, @4);",

  2237              dims.toString(), smapper.pushA(), typeName, fn

  2238         );

  2239         return i;

  2240     }

  2242     private int generateTableSwitch(int i, final byte[] byteCodes, final StackMapper smapper, int topMostLabel) throws IOException {

  2243         int table = i / 4 * 4 + 4;

  2244         int dflt = i + readInt4(byteCodes, table);

  2245         table += 4;

  2246         int low = readInt4(byteCodes, table);

  2247         table += 4;

  2248         int high = readInt4(byteCodes, table);

  2249         table += 4;

  2250         final CharSequence swVar = smapper.popValue();

  2251         smapper.flush(this);

  2252         append("switch (").append(swVar).append(") {\n");

  2253         while (low <= high) {

  2254             int offset = i + readInt4(byteCodes, table);

  2255             table += 4;

  2256             append("  case " + low).append(":"); goTo(this, i, offset, topMostLabel); append('\n');

  2257             low++;

  2258         }

  2259         append("  default: ");

  2260         goTo(this, i, dflt, topMostLabel);

  2261         append("\n}");

  2262         i = table - 1;

  2263         return i;

  2264     }

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

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

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

  2269         table += 4;

  2270         int n = readInt4(byteCodes, table);

  2271         table += 4;

  2272         final CharSequence swVar = smapper.popValue();

  2273         smapper.flush(this);

  2274         append("switch (").append(swVar).append(") {\n");

  2275         while (n-- > 0) {

  2276             int cnstnt = readInt4(byteCodes, table);

  2277             table += 4;

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

  2279             table += 4;

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

  2281         }

  2282         append("  default: ");

  2283         goTo(this, i, dflt, topMostLabel);

  2284         append("\n}");

  2285         i = table - 1;

  2286         return i;

  2287     }

  2289     private void generateInstanceOf(int indx, final StackMapper smapper) throws IOException {

  2290         String type = jc.getClassName(indx);

  2291         if (!type.startsWith("[")) {

  2292             emit(smapper, this,

  2293                     "var @2 = @1 != null && @1['$instOf_@3'] ? 1 : 0;",

  2294                  smapper.popA(), smapper.pushI(),

  2295                  type.replace('/', '_'));

  2296         } else {

  2297             int cnt = 0;

  2298             while (type.charAt(cnt) == '[') {

  2299                 cnt++;

  2300             }

  2301             if (type.charAt(cnt) == 'L') {

  2302                 type = "vm." + mangleClassName(type.substring(cnt + 1, type.length() - 1));

  2303                 emit(smapper, this,

  2304                     "var @2 = Array.prototype['isInstance__ZLjava_lang_Object_2ILjava_lang_Object_2'](@1, @4, @3);",

  2305                     smapper.popA(), smapper.pushI(),

  2306                     type, "" + cnt

  2307                 );

  2308             } else {

  2309                 emit(smapper, this,

  2310                     "var @2 = Array.prototype['isInstance__ZLjava_lang_Object_2Ljava_lang_String_2'](@1, '@3');",

  2311                     smapper.popA(), smapper.pushI(), type

  2312                 );

  2313             }

  2314         }

  2315     }

  2317     private void generateCheckcast(int indx, final StackMapper smapper) throws IOException {

  2318         String type = jc.getClassName(indx);

  2319         if (!type.startsWith("[")) {

  2320             emitNoFlush(smapper,

  2321                  "if (@1 !== null && !@1['$instOf_@2']) throw vm.java_lang_ClassCastException(true);",

  2322                  smapper.getT(0, VarType.REFERENCE, false), type.replace('/', '_'));

  2323         } else {

  2324             int cnt = 0;

  2325             while (type.charAt(cnt) == '[') {

  2326                 cnt++;

  2327             }

  2328             if (type.charAt(cnt) == 'L') {

  2329                 type = "vm." + mangleClassName(type.substring(cnt + 1, type.length() - 1));

  2330                 emitNoFlush(smapper,

  2331                     "if (@1 !== null && !Array.prototype['isInstance__ZLjava_lang_Object_2ILjava_lang_Object_2'](@1, @3, @2)) throw vm.java_lang_ClassCastException(true);",

  2332                      smapper.getT(0, VarType.REFERENCE, false), type, "" + cnt

  2333                 );

  2334             } else {

  2335                 emitNoFlush(smapper,

  2336                     "if (@1 !== null && !Array.prototype['isInstance__ZLjava_lang_Object_2Ljava_lang_String_2'](@1, '@2')) throw vm.java_lang_ClassCastException(true);",

  2337                      smapper.getT(0, VarType.REFERENCE, false), type

  2338                 );

  2339             }

  2340         }

  2341     }

  2343     private void generateByteCodeComment(int prev, int i, final byte[] byteCodes) throws IOException {

  2344         for (int j = prev; j <= i; j++) {

  2345             append(" ");

  2346             final int cc = readUByte(byteCodes, j);

  2347             append(Integer.toString(cc));

  2348         }

  2349     }

  2351     @JavaScriptBody(args = "msg", body = "")

  2352     private static void println(String msg) {

  2353         System.err.println(msg);

  2354     }

  2355 }

author	Jaroslav Tulach <jaroslav.tulach@apidesign.org>
	Sun, 10 Aug 2014 11:39:36 +0200
branch	jdk8
changeset 1660	2f22f2a2175d
parent 1659	d279ddd06652
child 1661	6d5075e5ceac
permissions	-rw-r--r--