hg/bck2brwsr: rt/vm/src/main/java/org/apidesign/vm4brwsr/ByteCodeToJavaScript.java@398911a8f401

     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 static org.apidesign.vm4brwsr.ByteCodeParser.*;

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

    25  *

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

    27  */

    28 abstract class ByteCodeToJavaScript {

    29     private ClassData jc;

    30     final Appendable out;

    31     final ObfuscationDelegate obfuscationDelegate;

    33     protected ByteCodeToJavaScript(Appendable out) {

    34         this(out, ObfuscationDelegate.NULL);

    35     }

    37     protected ByteCodeToJavaScript(

    38             Appendable out, ObfuscationDelegate obfuscationDelegate) {

    39         this.out = out;

    40         this.obfuscationDelegate = obfuscationDelegate;

    41     }

    43     /* Collects additional required resources.

    44      *

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

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

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

    48      */

    49     protected abstract boolean requireReference(String internalClassName);

    51     /*

    52      * @param resourcePath name of resources to read

    53      */

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

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

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

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

    59      *

    60      * @param className suggested name of the class

    61      */

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

    63         return className + " = ";

    64     }

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

    66         return classOperation;

    67     }

    69     abstract String getVMObject();

    71     /** Prints out a debug message.

    72      *

    73      * @param msg the message

    74      * @return true if the message has been printed

    75      * @throws IOException

    76      */

    77     boolean debug(String msg) throws IOException {

    78         out.append(msg);

    79         return true;

    80     }

    82     /**

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

    84      *

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

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

    87      *

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

    89      */

    91     public String compile(InputStream classFile) throws IOException {

    92         this.jc = new ClassData(classFile);

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

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

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

    96             );

    97         }

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

    99         {

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

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

   102                 "resource", "processByteCode"

   103             );

   104             if (arr != null) {

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

   106                     requireScript(arr[0]);

   107                 }

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

   109                     return null;

   110                 }

   111             }

   112         }

   113         {

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

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

   116                 "value"

   117             );

   118             if (arr != null) {

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

   120                     requireScript(arr[0]);

   121                 } else {

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

   123                     requireScript(

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

   125                     );

   126                 }

   127             }

   128         }

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

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

   131             "container", "prototype"

   132         );

   133         StringArray toInitilize = new StringArray();

   134         final String className = className(jc);

   135         out.append("\n\n").append(assignClass(className));

   136         out.append("function ").append(className).append("() {");

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

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

   139         if (proto == null) {

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

   141             out.append("\n    var pp = ").

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

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

   144             out.append("\n    var c = p;");

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

   146         } else {

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

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

   149                 proto[0] = "p";

   150             }

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

   152             out.append("\n    var sprcls = null;");

   153         }

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

   155             if (v.isStatic()) {

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

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

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

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

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

   161             } else {

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

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

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

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

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

   167                    .append("; };");

   168             }

   170             obfuscationDelegate.exportField(out, "c", "_" + v.getName(), v);

   171         }

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

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

   174             String[] only = findAnnotation(onlyArr, jc,

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

   176                 "name", "value"

   177             );

   178             if (only != null) {

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

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

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

   182                 }

   183                 continue;

   184             }

   185             String destObject;

   186             String mn;

   187             out.append("\n    ");

   188             if (m.isStatic()) {

   189                 destObject = "c";

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

   191             } else {

   192                 if (m.isConstructor()) {

   193                     destObject = "CLS";

   194                     mn = generateInstanceMethod(destObject, m);

   195                 } else {

   196                     destObject = "c";

   197                     mn = generateInstanceMethod(destObject, m);

   198                 }

   199             }

   200             obfuscationDelegate.exportMethod(out, destObject, mn, m);

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

   202             if (runAnno != null) {

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

   204                 generateAnno(jc, out, runAnno);

   205                 out.append("\n    };");

   206             }

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

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

   209         }

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

   211         out.append("\n    function fillInstOf(x) {");

   212         String instOfName = "$instOf_" + className;

   213         out.append("\n        x.").append(instOfName).append(" = true;");

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

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

   216             out.append("\n      vm.").append(intrfc).append("(false).fillInstOf(x);");

   217             requireReference(superInterface);

   218         }

   219         out.append("\n    }");

   220         out.append("\n    c.fillInstOf = fillInstOf;");

   221         out.append("\n    fillInstOf(c);");

   222         obfuscationDelegate.exportJSProperty(out, "c", instOfName);

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

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

   225         out.append(accessClass("java_lang_Class(true);"));

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

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

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

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

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

   231         if (classAnno != null) {

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

   233             generateAnno(jc, out, classAnno);

   234             out.append("\n    };");

   235         }

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

   237             out.append("\n    ").append(init).append("();");

   238         }

   239         out.append("\n  }");

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

   241         out.append("\n    if (!(this instanceof CLS)) {");

   242         out.append("\n      return new CLS();");

   243         out.append("\n    }");

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

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

   246             String[] only = findAnnotation(onlyArr, jc,

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

   248                 "name", "value"

   249             );

   250             if (only != null) {

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

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

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

   254                 }

   255                 continue;

   256             }

   257             if (!v.isStatic()) {

   258                 out.append("\n    this.fld_").

   259                     append(className).append('_').

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

   261             }

   262         }

   263         out.append("\n    return this;");

   264         out.append("\n  }");

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

   266         out.append("\n};");

   268         obfuscationDelegate.exportClass(out, getVMObject(), className, jc);

   270 //        StringBuilder sb = new StringBuilder();

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

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

   273 //        }

   274         return "";

   275     }

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

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

   278         if (jsb != null) {

   279             return jsb;

   280         }

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

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

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

   284         }

   285         generateMethod(destObject, mn, m);

   286         return mn;

   287     }

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

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

   291         if (jsb != null) {

   292             return jsb;

   293         }

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

   295         generateMethod(destObject, mn, m);

   296         return mn;

   297     }

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

   300             throws IOException {

   301         final StackMapIterator stackMapIterator = m.createStackMapIterator();

   302         TrapDataIterator trap = m.getTrapDataIterator();

   303         final LocalsMapper lmapper =

   304                 new LocalsMapper(stackMapIterator.getArguments());

   306         out.append(destObject).append(".").append(name).append(" = function(");

   307         lmapper.outputArguments(out, m.isStatic());

   308         out.append(") {").append("\n");

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

   311         if (byteCodes == null) {

   312             out.append("  throw 'no code found for ")

   313                .append(jc.getClassName()).append('.')

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

   315             out.append("};");

   316             return;

   317         }

   319         final StackMapper smapper = new StackMapper();

   321         if (!m.isStatic()) {

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

   323         }

   325         int lastStackFrame = -1;

   326         TrapData[] previousTrap = null;

   327         boolean wide = false;

   329         out.append("\n  var gt = 0;\n");

   330         int openBraces = 0;

   331         int topMostLabel = 0;

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

   333             int prev = i;

   334             stackMapIterator.advanceTo(i);

   335             boolean changeInCatch = trap.advanceTo(i);

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

   337                 if (previousTrap != null) {

   338                     generateCatch(previousTrap, i, topMostLabel);

   339                     previousTrap = null;

   340                 }

   341             }

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

   343                 if (i != 0) {

   344                     out.append("    }\n");

   345                 }

   346                 if (openBraces > 64) {

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

   348                         out.append("break;}\n");

   349                     }

   350                     openBraces = 1;

   351                     topMostLabel = i;

   352                 }

   354                 lastStackFrame = stackMapIterator.getFrameIndex();

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

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

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

   358                 openBraces++;

   359                 changeInCatch = true;

   360             } else {

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

   362             }

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

   364                 out.append("try {");

   365                 previousTrap = trap.current();

   366             }

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

   368             switch (c) {

   369                 case opc_aload_0:

   370                     smapper.assign(out, VarType.REFERENCE, lmapper.getA(0));

   371                     break;

   372                 case opc_iload_0:

   373                     smapper.assign(out, VarType.INTEGER, lmapper.getI(0));

   374                     break;

   375                 case opc_lload_0:

   376                     smapper.assign(out, VarType.LONG, lmapper.getL(0));

   377                     break;

   378                 case opc_fload_0:

   379                     smapper.assign(out, VarType.FLOAT, lmapper.getF(0));

   380                     break;

   381                 case opc_dload_0:

   382                     smapper.assign(out, VarType.DOUBLE, lmapper.getD(0));

   383                     break;

   384                 case opc_aload_1:

   385                     smapper.assign(out, VarType.REFERENCE, lmapper.getA(1));

   386                     break;

   387                 case opc_iload_1:

   388                     smapper.assign(out, VarType.INTEGER, lmapper.getI(1));

   389                     break;

   390                 case opc_lload_1:

   391                     smapper.assign(out, VarType.LONG, lmapper.getL(1));

   392                     break;

   393                 case opc_fload_1:

   394                     smapper.assign(out, VarType.FLOAT, lmapper.getF(1));

   395                     break;

   396                 case opc_dload_1:

   397                     smapper.assign(out, VarType.DOUBLE, lmapper.getD(1));

   398                     break;

   399                 case opc_aload_2:

   400                     smapper.assign(out, VarType.REFERENCE, lmapper.getA(2));

   401                     break;

   402                 case opc_iload_2:

   403                     smapper.assign(out, VarType.INTEGER, lmapper.getI(2));

   404                     break;

   405                 case opc_lload_2:

   406                     smapper.assign(out, VarType.LONG, lmapper.getL(2));

   407                     break;

   408                 case opc_fload_2:

   409                     smapper.assign(out, VarType.FLOAT, lmapper.getF(2));

   410                     break;

   411                 case opc_dload_2:

   412                     smapper.assign(out, VarType.DOUBLE, lmapper.getD(2));

   413                     break;

   414                 case opc_aload_3:

   415                     smapper.assign(out, VarType.REFERENCE, lmapper.getA(3));

   416                     break;

   417                 case opc_iload_3:

   418                     smapper.assign(out, VarType.INTEGER, lmapper.getI(3));

   419                     break;

   420                 case opc_lload_3:

   421                     smapper.assign(out, VarType.LONG, lmapper.getL(3));

   422                     break;

   423                 case opc_fload_3:

   424                     smapper.assign(out, VarType.FLOAT, lmapper.getF(3));

   425                     break;

   426                 case opc_dload_3:

   427                     smapper.assign(out, VarType.DOUBLE, lmapper.getD(3));

   428                     break;

   429                 case opc_iload: {

   430                     ++i;

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

   432                                           : readUByte(byteCodes, i);

   433                     wide = false;

   434                     smapper.assign(out, VarType.INTEGER, lmapper.getI(indx));

   435                     break;

   436                 }

   437                 case opc_lload: {

   438                     ++i;

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

   440                                           : readUByte(byteCodes, i);

   441                     wide = false;

   442                     smapper.assign(out, VarType.LONG, lmapper.getL(indx));

   443                     break;

   444                 }

   445                 case opc_fload: {

   446                     ++i;

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

   448                                           : readUByte(byteCodes, i);

   449                     wide = false;

   450                     smapper.assign(out, VarType.FLOAT, lmapper.getF(indx));

   451                     break;

   452                 }

   453                 case opc_dload: {

   454                     ++i;

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

   456                                           : readUByte(byteCodes, i);

   457                     wide = false;

   458                     smapper.assign(out, VarType.DOUBLE, lmapper.getD(indx));

   459                     break;

   460                 }

   461                 case opc_aload: {

   462                     ++i;

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

   464                                           : readUByte(byteCodes, i);

   465                     wide = false;

   466                     smapper.assign(out, VarType.REFERENCE, lmapper.getA(indx));

   467                     break;

   468                 }

   469                 case opc_istore: {

   470                     ++i;

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

   472                                           : readUByte(byteCodes, i);

   473                     wide = false;

   474                     emit(smapper, out, "var @1 = @2;",

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

   476                     break;

   477                 }

   478                 case opc_lstore: {

   479                     ++i;

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

   481                                           : readUByte(byteCodes, i);

   482                     wide = false;

   483                     emit(smapper, out, "var @1 = @2;",

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

   485                     break;

   486                 }

   487                 case opc_fstore: {

   488                     ++i;

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

   490                                           : readUByte(byteCodes, i);

   491                     wide = false;

   492                     emit(smapper, out, "var @1 = @2;",

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

   494                     break;

   495                 }

   496                 case opc_dstore: {

   497                     ++i;

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

   499                                           : readUByte(byteCodes, i);

   500                     wide = false;

   501                     emit(smapper, out, "var @1 = @2;",

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

   503                     break;

   504                 }

   505                 case opc_astore: {

   506                     ++i;

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

   508                                           : readUByte(byteCodes, i);

   509                     wide = false;

   510                     emit(smapper, out, "var @1 = @2;",

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

   512                     break;

   513                 }

   514                 case opc_astore_0:

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

   516                     break;

   517                 case opc_istore_0:

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

   519                     break;

   520                 case opc_lstore_0:

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

   522                     break;

   523                 case opc_fstore_0:

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

   525                     break;

   526                 case opc_dstore_0:

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

   528                     break;

   529                 case opc_astore_1:

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

   531                     break;

   532                 case opc_istore_1:

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

   534                     break;

   535                 case opc_lstore_1:

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

   537                     break;

   538                 case opc_fstore_1:

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

   540                     break;

   541                 case opc_dstore_1:

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

   543                     break;

   544                 case opc_astore_2:

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

   546                     break;

   547                 case opc_istore_2:

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

   549                     break;

   550                 case opc_lstore_2:

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

   552                     break;

   553                 case opc_fstore_2:

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

   555                     break;

   556                 case opc_dstore_2:

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

   558                     break;

   559                 case opc_astore_3:

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

   561                     break;

   562                 case opc_istore_3:

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

   564                     break;

   565                 case opc_lstore_3:

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

   567                     break;

   568                 case opc_fstore_3:

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

   570                     break;

   571                 case opc_dstore_3:

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

   573                     break;

   574                 case opc_iadd:

   575                     emit(smapper, out, "@1 = @1.add32(@2);", smapper.getI(1), smapper.popI());

   576                     break;

   577                 case opc_ladd:

   578                     emit(smapper, out, "@1 = @1.add64(@2);", smapper.getL(1), smapper.popL());

   579                     break;

   580                 case opc_fadd:

   581                     emit(smapper, out, "@1 += @2;", smapper.getF(1), smapper.popF());

   582                     break;

   583                 case opc_dadd:

   584                     emit(smapper, out, "@1 += @2;", smapper.getD(1), smapper.popD());

   585                     break;

   586                 case opc_isub:

   587                     emit(smapper, out, "@1 = @1.sub32(@2);", smapper.getI(1), smapper.popI());

   588                     break;

   589                 case opc_lsub:

   590                     emit(smapper, out, "@1 = @1.sub64(@2);", smapper.getL(1), smapper.popL());

   591                     break;

   592                 case opc_fsub:

   593                     emit(smapper, out, "@1 -= @2;", smapper.getF(1), smapper.popF());

   594                     break;

   595                 case opc_dsub:

   596                     emit(smapper, out, "@1 -= @2;", smapper.getD(1), smapper.popD());

   597                     break;

   598                 case opc_imul:

   599                     emit(smapper, out, "@1 = @1.mul32(@2);", smapper.getI(1), smapper.popI());

   600                     break;

   601                 case opc_lmul:

   602                     emit(smapper, out, "@1 = @1.mul64(@2);", smapper.getL(1), smapper.popL());

   603                     break;

   604                 case opc_fmul:

   605                     emit(smapper, out, "@1 *= @2;", smapper.getF(1), smapper.popF());

   606                     break;

   607                 case opc_dmul:

   608                     emit(smapper, out, "@1 *= @2;", smapper.getD(1), smapper.popD());

   609                     break;

   610                 case opc_idiv:

   611                     emit(smapper, out, "@1 = @1.div32(@2);",

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

   613                     break;

   614                 case opc_ldiv:

   615                     emit(smapper, out, "@1 = @1.div64(@2);",

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

   617                     break;

   618                 case opc_fdiv:

   619                     emit(smapper, out, "@1 /= @2;", smapper.getF(1), smapper.popF());

   620                     break;

   621                 case opc_ddiv:

   622                     emit(smapper, out, "@1 /= @2;", smapper.getD(1), smapper.popD());

   623                     break;

   624                 case opc_irem:

   625                     emit(smapper, out, "@1 = @1.mod32(@2);",

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

   627                     break;

   628                 case opc_lrem:

   629                     emit(smapper, out, "@1 = @1.mod64(@2);",

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

   631                     break;

   632                 case opc_frem:

   633                     emit(smapper, out, "@1 %= @2;", smapper.getF(1), smapper.popF());

   634                     break;

   635                 case opc_drem:

   636                     emit(smapper, out, "@1 %= @2;", smapper.getD(1), smapper.popD());

   637                     break;

   638                 case opc_iand:

   639                     emit(smapper, out, "@1 &= @2;", smapper.getI(1), smapper.popI());

   640                     break;

   641                 case opc_land:

   642                     emit(smapper, out, "@1 = @1.and64(@2);", smapper.getL(1), smapper.popL());

   643                     break;

   644                 case opc_ior:

   645                     emit(smapper, out, "@1 |= @2;", smapper.getI(1), smapper.popI());

   646                     break;

   647                 case opc_lor:

   648                     emit(smapper, out, "@1 = @1.or64(@2);", smapper.getL(1), smapper.popL());

   649                     break;

   650                 case opc_ixor:

   651                     emit(smapper, out, "@1 ^= @2;", smapper.getI(1), smapper.popI());

   652                     break;

   653                 case opc_lxor:

   654                     emit(smapper, out, "@1 = @1.xor64(@2);", smapper.getL(1), smapper.popL());

   655                     break;

   656                 case opc_ineg:

   657                     emit(smapper, out, "@1 = @1.neg32();", smapper.getI(0));

   658                     break;

   659                 case opc_lneg:

   660                     emit(smapper, out, "@1 = @1.neg64();", smapper.getL(0));

   661                     break;

   662                 case opc_fneg:

   663                     emit(smapper, out, "@1 = -@1;", smapper.getF(0));

   664                     break;

   665                 case opc_dneg:

   666                     emit(smapper, out, "@1 = -@1;", smapper.getD(0));

   667                     break;

   668                 case opc_ishl:

   669                     emit(smapper, out, "@1 <<= @2;", smapper.getI(1), smapper.popI());

   670                     break;

   671                 case opc_lshl:

   672                     emit(smapper, out, "@1 = @1.shl64(@2);", smapper.getL(1), smapper.popI());

   673                     break;

   674                 case opc_ishr:

   675                     emit(smapper, out, "@1 >>= @2;", smapper.getI(1), smapper.popI());

   676                     break;

   677                 case opc_lshr:

   678                     emit(smapper, out, "@1 = @1.shr64(@2);", smapper.getL(1), smapper.popI());

   679                     break;

   680                 case opc_iushr:

   681                     emit(smapper, out, "@1 >>>= @2;", smapper.getI(1), smapper.popI());

   682                     break;

   683                 case opc_lushr:

   684                     emit(smapper, out, "@1 = @1.ushr64(@2);", smapper.getL(1), smapper.popI());

   685                     break;

   686                 case opc_iinc: {

   687                     ++i;

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

   689                                              : readUByte(byteCodes, i);

   690                     ++i;

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

   692                                             : byteCodes[i];

   693                     wide = false;

   694                     if (incrBy == 1) {

   695                         emit(smapper, out, "@1++;", lmapper.getI(varIndx));

   696                     } else {

   697                         emit(smapper, out, "@1 += @2;",

   698                              lmapper.getI(varIndx),

   699                              Integer.toString(incrBy));

   700                     }

   701                     break;

   702                 }

   703                 case opc_return:

   704                     emit(smapper, out, "return;");

   705                     break;

   706                 case opc_ireturn:

   707                     emit(smapper, out, "return @1;", smapper.popI());

   708                     break;

   709                 case opc_lreturn:

   710                     emit(smapper, out, "return @1;", smapper.popL());

   711                     break;

   712                 case opc_freturn:

   713                     emit(smapper, out, "return @1;", smapper.popF());

   714                     break;

   715                 case opc_dreturn:

   716                     emit(smapper, out, "return @1;", smapper.popD());

   717                     break;

   718                 case opc_areturn:

   719                     emit(smapper, out, "return @1;", smapper.popA());

   720                     break;

   721                 case opc_i2l:

   722                     emit(smapper, out, "var @2 = @1;", smapper.popI(), smapper.pushL());

   723                     break;

   724                 case opc_i2f:

   725                     emit(smapper, out, "var @2 = @1;", smapper.popI(), smapper.pushF());

   726                     break;

   727                 case opc_i2d:

   728                     emit(smapper, out, "var @2 = @1;", smapper.popI(), smapper.pushD());

   729                     break;

   730                 case opc_l2i:

   731                     emit(smapper, out, "var @2 = @1.toInt32();", smapper.popL(), smapper.pushI());

   732                     break;

   733                     // max int check?

   734                 case opc_l2f:

   735                     emit(smapper, out, "var @2 = @1.toFP();", smapper.popL(), smapper.pushF());

   736                     break;

   737                 case opc_l2d:

   738                     emit(smapper, out, "var @2 = @1.toFP();", smapper.popL(), smapper.pushD());

   739                     break;

   740                 case opc_f2d:

   741                     emit(smapper, out, "var @2 = @1;", smapper.popF(), smapper.pushD());

   742                     break;

   743                 case opc_d2f:

   744                     emit(smapper, out, "var @2 = @1;", smapper.popD(), smapper.pushF());

   745                     break;

   746                 case opc_f2i:

   747                     emit(smapper, out, "var @2 = @1.toInt32();",

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

   749                     break;

   750                 case opc_f2l:

   751                     emit(smapper, out, "var @2 = @1.toLong();",

   752                          smapper.popF(), smapper.pushL());

   753                     break;

   754                 case opc_d2i:

   755                     emit(smapper, out, "var @2 = @1.toInt32();",

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

   757                     break;

   758                 case opc_d2l:

   759                     emit(smapper, out, "var @2 = @1.toLong();",

   760                          smapper.popD(), smapper.pushL());

   761                     break;

   762                 case opc_i2b:

   763                     emit(smapper, out, "var @1 = @1.toInt8();", smapper.getI(0));

   764                     break;

   765                 case opc_i2c:

   766                     out.append("{ /* number conversion */ }");

   767                     break;

   768                 case opc_i2s:

   769                     emit(smapper, out, "var @1 = @1.toInt16();", smapper.getI(0));

   770                     break;

   771                 case opc_aconst_null:

   772                     emit(smapper, out, "var @1 = null;", smapper.pushA());

   773                     break;

   774                 case opc_iconst_m1:

   775                     emit(smapper, out, "var @1 = -1;", smapper.pushI());

   776                     break;

   777                 case opc_iconst_0:

   778                     emit(smapper, out, "var @1 = 0;", smapper.pushI());

   779                     break;

   780                 case opc_dconst_0:

   781                     emit(smapper, out, "var @1 = 0;", smapper.pushD());

   782                     break;

   783                 case opc_lconst_0:

   784                     emit(smapper, out, "var @1 = 0;", smapper.pushL());

   785                     break;

   786                 case opc_fconst_0:

   787                     emit(smapper, out, "var @1 = 0;", smapper.pushF());

   788                     break;

   789                 case opc_iconst_1:

   790                     emit(smapper, out, "var @1 = 1;", smapper.pushI());

   791                     break;

   792                 case opc_lconst_1:

   793                     emit(smapper, out, "var @1 = 1;", smapper.pushL());

   794                     break;

   795                 case opc_fconst_1:

   796                     emit(smapper, out, "var @1 = 1;", smapper.pushF());

   797                     break;

   798                 case opc_dconst_1:

   799                     emit(smapper, out, "var @1 = 1;", smapper.pushD());

   800                     break;

   801                 case opc_iconst_2:

   802                     emit(smapper, out, "var @1 = 2;", smapper.pushI());

   803                     break;

   804                 case opc_fconst_2:

   805                     emit(smapper, out, "var @1 = 2;", smapper.pushF());

   806                     break;

   807                 case opc_iconst_3:

   808                     emit(smapper, out, "var @1 = 3;", smapper.pushI());

   809                     break;

   810                 case opc_iconst_4:

   811                     emit(smapper, out, "var @1 = 4;", smapper.pushI());

   812                     break;

   813                 case opc_iconst_5:

   814                     emit(smapper, out, "var @1 = 5;", smapper.pushI());

   815                     break;

   816                 case opc_ldc: {

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

   818                     String v = encodeConstant(indx);

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

   820                     emit(smapper, out, "var @1 = @2;", smapper.pushT(type), v);

   821                     break;

   822                 }

   823                 case opc_ldc_w:

   824                 case opc_ldc2_w: {

   825                     int indx = readUShortArg(byteCodes, i);

   826                     i += 2;

   827                     String v = encodeConstant(indx);

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

   829                     if (type == VarType.LONG) {

   830                         final Long lv = new Long(v);

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

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

   833                         emit(smapper, out, "var @1 = 0x@3.next32(0x@2);", smapper.pushL(),

   834                                 Integer.toHexString(low), Integer.toHexString(hi));

   835                     } else {

   836                         emit(smapper, out, "var @1 = @2;", smapper.pushT(type), v);

   837                     }

   838                     break;

   839                 }

   840                 case opc_lcmp:

   841                     emit(smapper, out, "var @3 = @2.compare64(@1);",

   842                          smapper.popL(), smapper.popL(), smapper.pushI());

   843                     break;

   844                 case opc_fcmpl:

   845                 case opc_fcmpg:

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

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

   848                     break;

   849                 case opc_dcmpl:

   850                 case opc_dcmpg:

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

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

   853                     break;

   854                 case opc_if_acmpeq:

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

   856                                    "===", topMostLabel);

   857                     break;

   858                 case opc_if_acmpne:

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

   860                                    "!==", topMostLabel);

   861                     break;

   862                 case opc_if_icmpeq:

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

   864                                    "==", topMostLabel);

   865                     break;

   866                 case opc_ifeq: {

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

   868                     emitIf(smapper, out, "if (@1 == 0) ",

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

   870                     i += 2;

   871                     break;

   872                 }

   873                 case opc_ifne: {

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

   875                     emitIf(smapper, out, "if (@1 != 0) ",

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

   877                     i += 2;

   878                     break;

   879                 }

   880                 case opc_iflt: {

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

   882                     emitIf(smapper, out, "if (@1 < 0) ",

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

   884                     i += 2;

   885                     break;

   886                 }

   887                 case opc_ifle: {

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

   889                     emitIf(smapper, out, "if (@1 <= 0) ",

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

   891                     i += 2;

   892                     break;

   893                 }

   894                 case opc_ifgt: {

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

   896                     emitIf(smapper, out, "if (@1 > 0) ",

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

   898                     i += 2;

   899                     break;

   900                 }

   901                 case opc_ifge: {

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

   903                     emitIf(smapper, out, "if (@1 >= 0) ",

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

   905                     i += 2;

   906                     break;

   907                 }

   908                 case opc_ifnonnull: {

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

   910                     emitIf(smapper, out, "if (@1 !== null) ",

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

   912                     i += 2;

   913                     break;

   914                 }

   915                 case opc_ifnull: {

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

   917                     emitIf(smapper, out, "if (@1 === null) ",

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

   919                     i += 2;

   920                     break;

   921                 }

   922                 case opc_if_icmpne:

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

   924                                    "!=", topMostLabel);

   925                     break;

   926                 case opc_if_icmplt:

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

   928                                    "<", topMostLabel);

   929                     break;

   930                 case opc_if_icmple:

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

   932                                    "<=", topMostLabel);

   933                     break;

   934                 case opc_if_icmpgt:

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

   936                                    ">", topMostLabel);

   937                     break;

   938                 case opc_if_icmpge:

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

   940                                    ">=", topMostLabel);

   941                     break;

   942                 case opc_goto: {

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

   944                     goTo(out, i, indx, topMostLabel);

   945                     i += 2;

   946                     break;

   947                 }

   948                 case opc_lookupswitch: {

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

   950                     break;

   951                 }

   952                 case opc_tableswitch: {

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

   954                     break;

   955                 }

   956                 case opc_invokeinterface: {

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

   958                     break;

   959                 }

   960                 case opc_invokevirtual:

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

   962                     break;

   963                 case opc_invokespecial:

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

   965                     break;

   966                 case opc_invokestatic:

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

   968                     break;

   969                 case opc_new: {

   970                     int indx = readUShortArg(byteCodes, i);

   971                     String ci = jc.getClassName(indx);

   972                     emit(smapper, out, "var @1 = new @2;",

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

   974                     addReference(ci);

   975                     i += 2;

   976                     break;

   977                 }

   978                 case opc_newarray:

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

   980                     generateNewArray(atype, smapper);

   981                     break;

   982                 case opc_anewarray: {

   983                     int type = readUShortArg(byteCodes, i);

   984                     i += 2;

   985                     generateANewArray(type, smapper);

   986                     break;

   987                 }

   988                 case opc_multianewarray: {

   989                     int type = readUShortArg(byteCodes, i);

   990                     i += 2;

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

   992                     break;

   993                 }

   994                 case opc_arraylength:

   995                     emit(smapper, out, "var @2 = @1.length;",

   996                          smapper.popA(), smapper.pushI());

   997                     break;

   998                 case opc_lastore:

   999                     emit(smapper, out, "Array.at(@3, @2, @1);",

  1000                          smapper.popL(), smapper.popI(), smapper.popA());

  1001                     break;

  1002                 case opc_fastore:

  1003                     emit(smapper, out, "Array.at(@3, @2, @1);",

  1004                          smapper.popF(), smapper.popI(), smapper.popA());

  1005                     break;

  1006                 case opc_dastore:

  1007                     emit(smapper, out, "Array.at(@3, @2, @1);",

  1008                          smapper.popD(), smapper.popI(), smapper.popA());

  1009                     break;

  1010                 case opc_aastore:

  1011                     emit(smapper, out, "Array.at(@3, @2, @1);",

  1012                          smapper.popA(), smapper.popI(), smapper.popA());

  1013                     break;

  1014                 case opc_iastore:

  1015                 case opc_bastore:

  1016                 case opc_castore:

  1017                 case opc_sastore:

  1018                     emit(smapper, out, "Array.at(@3, @2, @1);",

  1019                          smapper.popI(), smapper.popI(), smapper.popA());

  1020                     break;

  1021                 case opc_laload:

  1022                     emit(smapper, out, "var @3 = Array.at(@2, @1);",

  1023                          smapper.popI(), smapper.popA(), smapper.pushL());

  1024                     break;

  1025                 case opc_faload:

  1026                     emit(smapper, out, "var @3 = Array.at(@2, @1);",

  1027                          smapper.popI(), smapper.popA(), smapper.pushF());

  1028                     break;

  1029                 case opc_daload:

  1030                     emit(smapper, out, "var @3 = Array.at(@2, @1);",

  1031                          smapper.popI(), smapper.popA(), smapper.pushD());

  1032                     break;

  1033                 case opc_aaload:

  1034                     emit(smapper, out, "var @3 = Array.at(@2, @1);",

  1035                          smapper.popI(), smapper.popA(), smapper.pushA());

  1036                     break;

  1037                 case opc_iaload:

  1038                 case opc_baload:

  1039                 case opc_caload:

  1040                 case opc_saload:

  1041                     emit(smapper, out, "var @3 = Array.at(@2, @1);",

  1042                          smapper.popI(), smapper.popA(), smapper.pushI());

  1043                     break;

  1044                 case opc_pop:

  1045                 case opc_pop2:

  1046                     smapper.pop(1);

  1047                     debug("/* pop */");

  1048                     break;

  1049                 case opc_dup: {

  1050                     final Variable v = smapper.get(0);

  1051                     emit(smapper, out, "var @1 = @2;", smapper.pushT(v.getType()), v);

  1052                     break;

  1053                 }

  1054                 case opc_dup2: {

  1055                     final Variable vi1 = smapper.get(0);

  1057                     if (vi1.isCategory2()) {

  1058                         emit(smapper, out, "var @1 = @2;",

  1059                              smapper.pushT(vi1.getType()), vi1);

  1060                     } else {

  1061                         final Variable vi2 = smapper.get(1);

  1062                         emit(smapper, out, "var @1 = @2, @3 = @4;",

  1063                              smapper.pushT(vi2.getType()), vi2,

  1064                              smapper.pushT(vi1.getType()), vi1);

  1065                     }

  1066                     break;

  1067                 }

  1068                 case opc_dup_x1: {

  1069                     final Variable vi1 = smapper.pop();

  1070                     final Variable vi2 = smapper.pop();

  1071                     final Variable vo3 = smapper.pushT(vi1.getType());

  1072                     final Variable vo2 = smapper.pushT(vi2.getType());

  1073                     final Variable vo1 = smapper.pushT(vi1.getType());

  1075                     emit(smapper, out, "var @1 = @2, @3 = @4, @5 = @6;",

  1076                          vo1, vi1, vo2, vi2, vo3, vo1);

  1077                     break;

  1078                 }

  1079                 case opc_dup2_x1: {

  1080                     final Variable vi1 = smapper.pop();

  1081                     final Variable vi2 = smapper.pop();

  1083                     if (vi1.isCategory2()) {

  1084                         final Variable vo3 = smapper.pushT(vi1.getType());

  1085                         final Variable vo2 = smapper.pushT(vi2.getType());

  1086                         final Variable vo1 = smapper.pushT(vi1.getType());

  1088                         emit(smapper, out, "var @1 = @2, @3 = @4, @5 = @6;",

  1089                              vo1, vi1, vo2, vi2, vo3, vo1);

  1090                     } else {

  1091                         final Variable vi3 = smapper.pop();

  1092                         final Variable vo5 = smapper.pushT(vi2.getType());

  1093                         final Variable vo4 = smapper.pushT(vi1.getType());

  1094                         final Variable vo3 = smapper.pushT(vi3.getType());

  1095                         final Variable vo2 = smapper.pushT(vi2.getType());

  1096                         final Variable vo1 = smapper.pushT(vi1.getType());

  1098                         emit(smapper, out, "var @1 = @2, @3 = @4, @5 = @6,",

  1099                              vo1, vi1, vo2, vi2, vo3, vi3);

  1100                         emit(smapper, out, " @1 = @2, @3 = @4;",

  1101                              vo4, vo1, vo5, vo2);

  1102                     }

  1103                     break;

  1104                 }

  1105                 case opc_dup_x2: {

  1106                     final Variable vi1 = smapper.pop();

  1107                     final Variable vi2 = smapper.pop();

  1109                     if (vi2.isCategory2()) {

  1110                         final Variable vo3 = smapper.pushT(vi1.getType());

  1111                         final Variable vo2 = smapper.pushT(vi2.getType());

  1112                         final Variable vo1 = smapper.pushT(vi1.getType());

  1114                         emit(smapper, out, "var @1 = @2, @3 = @4, @5 = @6;",

  1115                              vo1, vi1, vo2, vi2, vo3, vo1);

  1116                     } else {

  1117                         final Variable vi3 = smapper.pop();

  1118                         final Variable vo4 = smapper.pushT(vi1.getType());

  1119                         final Variable vo3 = smapper.pushT(vi3.getType());

  1120                         final Variable vo2 = smapper.pushT(vi2.getType());

  1121                         final Variable vo1 = smapper.pushT(vi1.getType());

  1123                         emit(smapper, out, "var @1 = @2, @3 = @4, @5 = @6, @7 = @8;",

  1124                              vo1, vi1, vo2, vi2, vo3, vi3, vo4, vo1);

  1125                     }

  1126                     break;

  1127                 }

  1128                 case opc_dup2_x2: {

  1129                     final Variable vi1 = smapper.pop();

  1130                     final Variable vi2 = smapper.pop();

  1132                     if (vi1.isCategory2()) {

  1133                         if (vi2.isCategory2()) {

  1134                             final Variable vo3 = smapper.pushT(vi1.getType());

  1135                             final Variable vo2 = smapper.pushT(vi2.getType());

  1136                             final Variable vo1 = smapper.pushT(vi1.getType());

  1138                             emit(smapper, out, "var @1 = @2, @3 = @4, @5 = @6;",

  1139                                  vo1, vi1, vo2, vi2, vo3, vo1);

  1140                         } else {

  1141                             final Variable vi3 = smapper.pop();

  1142                             final Variable vo4 = smapper.pushT(vi1.getType());

  1143                             final Variable vo3 = smapper.pushT(vi3.getType());

  1144                             final Variable vo2 = smapper.pushT(vi2.getType());

  1145                             final Variable vo1 = smapper.pushT(vi1.getType());

  1147                             emit(smapper, out, "var @1 = @2, @3 = @4, @5 = @6, @7 = @8;",

  1148                                  vo1, vi1, vo2, vi2, vo3, vi3, vo4, vo1);

  1149                         }

  1150                     } else {

  1151                         final Variable vi3 = smapper.pop();

  1153                         if (vi3.isCategory2()) {

  1154                             final Variable vo5 = smapper.pushT(vi2.getType());

  1155                             final Variable vo4 = smapper.pushT(vi1.getType());

  1156                             final Variable vo3 = smapper.pushT(vi3.getType());

  1157                             final Variable vo2 = smapper.pushT(vi2.getType());

  1158                             final Variable vo1 = smapper.pushT(vi1.getType());

  1160                             emit(smapper, out, "var @1 = @2, @3 = @4, @5 = @6,",

  1161                                  vo1, vi1, vo2, vi2, vo3, vi3);

  1162                             emit(smapper, out, " @1 = @2, @3 = @4;",

  1163                                  vo4, vo1, vo5, vo2);

  1164                         } else {

  1165                             final Variable vi4 = smapper.pop();

  1166                             final Variable vo6 = smapper.pushT(vi2.getType());

  1167                             final Variable vo5 = smapper.pushT(vi1.getType());

  1168                             final Variable vo4 = smapper.pushT(vi4.getType());

  1169                             final Variable vo3 = smapper.pushT(vi3.getType());

  1170                             final Variable vo2 = smapper.pushT(vi2.getType());

  1171                             final Variable vo1 = smapper.pushT(vi1.getType());

  1173                             emit(smapper, out, "var @1 = @2, @3 = @4, @5 = @6, @7 = @8,",

  1174                                  vo1, vi1, vo2, vi2, vo3, vi3, vo4, vi4);

  1175                             emit(smapper, out, " @1 = @2, @3 = @4;",

  1176                                  vo5, vo1, vo6, vo2);

  1177                         }

  1178                     }

  1179                     break;

  1180                 }

  1181                 case opc_swap: {

  1182                     final Variable vi1 = smapper.get(0);

  1183                     final Variable vi2 = smapper.get(1);

  1185                     if (vi1.getType() == vi2.getType()) {

  1186                         final Variable tmp = smapper.pushT(vi1.getType());

  1188                         emit(smapper, out, "var @1 = @2, @2 = @3, @3 = @1;",

  1189                              tmp, vi1, vi2);

  1190                         smapper.pop(1);

  1191                     } else {

  1192                         smapper.pop(2);

  1193                         smapper.pushT(vi1.getType());

  1194                         smapper.pushT(vi2.getType());

  1195                     }

  1196                     break;

  1197                 }

  1198                 case opc_bipush:

  1199                     emit(smapper, out, "var @1 = @2;",

  1200                          smapper.pushI(), Integer.toString(byteCodes[++i]));

  1201                     break;

  1202                 case opc_sipush:

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

  1204                          smapper.pushI(),

  1205                          Integer.toString(readShortArg(byteCodes, i)));

  1206                     i += 2;

  1207                     break;

  1208                 case opc_getfield: {

  1209                     int indx = readUShortArg(byteCodes, i);

  1210                     String[] fi = jc.getFieldInfoName(indx);

  1211                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1212                     final String mangleClass = mangleClassName(fi[0]);

  1213                     final String mangleClassAccess = accessClass(mangleClass);

  1214                     emit(smapper, out, "var @2 = @4(false)._@3.call(@1);",

  1215                          smapper.popA(),

  1216                          smapper.pushT(type), fi[1], mangleClassAccess

  1217                     );

  1218                     i += 2;

  1219                     break;

  1220                 }

  1221                 case opc_putfield: {

  1222                     int indx = readUShortArg(byteCodes, i);

  1223                     String[] fi = jc.getFieldInfoName(indx);

  1224                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1225                     final String mangleClass = mangleClassName(fi[0]);

  1226                     final String mangleClassAccess = accessClass(mangleClass);

  1227                     emit(smapper, out, "@4(false)._@3.call(@2, @1);",

  1228                          smapper.popT(type),

  1229                          smapper.popA(), fi[1],

  1230                          mangleClassAccess

  1231                     );

  1232                     i += 2;

  1233                     break;

  1234                 }

  1235                 case opc_getstatic: {

  1236                     int indx = readUShortArg(byteCodes, i);

  1237                     String[] fi = jc.getFieldInfoName(indx);

  1238                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1239                     emit(smapper, out, "var @1 = @2(false)._@3();",

  1240                          smapper.pushT(type),

  1241                          accessClass(mangleClassName(fi[0])), fi[1]);

  1242                     i += 2;

  1243                     addReference(fi[0]);

  1244                     break;

  1245                 }

  1246                 case opc_putstatic: {

  1247                     int indx = readUShortArg(byteCodes, i);

  1248                     String[] fi = jc.getFieldInfoName(indx);

  1249                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1250                     emit(smapper, out, "@1(false)._@2(@3);",

  1251                          accessClass(mangleClassName(fi[0])), fi[1],

  1252                          smapper.popT(type));

  1253                     i += 2;

  1254                     addReference(fi[0]);

  1255                     break;

  1256                 }

  1257                 case opc_checkcast: {

  1258                     int indx = readUShortArg(byteCodes, i);

  1259                     generateCheckcast(indx, smapper);

  1260                     i += 2;

  1261                     break;

  1262                 }

  1263                 case opc_instanceof: {

  1264                     int indx = readUShortArg(byteCodes, i);

  1265                     generateInstanceOf(indx, smapper);

  1266                     i += 2;

  1267                     break;

  1268                 }

  1269                 case opc_athrow: {

  1270                     final Variable v = smapper.popA();

  1271                     smapper.clear();

  1273                     emit(smapper, out, "{ var @1 = @2; throw @2; }",

  1274                          smapper.pushA(), v);

  1275                     break;

  1276                 }

  1278                 case opc_monitorenter: {

  1279                     out.append("/* monitor enter */");

  1280                     smapper.popA();

  1281                     break;

  1282                 }

  1284                 case opc_monitorexit: {

  1285                     out.append("/* monitor exit */");

  1286                     smapper.popA();

  1287                     break;

  1288                 }

  1290                 case opc_wide:

  1291                     wide = true;

  1292                     break;

  1294                 default: {

  1295                     wide = false;

  1296                     emit(smapper, out, "throw 'unknown bytecode @1';",

  1297                          Integer.toString(c));

  1298                 }

  1299             }

  1300             if (debug(" //")) {

  1301                 generateByteCodeComment(prev, i, byteCodes);

  1302             }

  1303             out.append("\n");

  1304         }

  1305         if (previousTrap != null) {

  1306             generateCatch(previousTrap, byteCodes.length, topMostLabel);

  1307         }

  1308         out.append("\n    }\n");

  1309         while (openBraces-- > 0) {

  1310             out.append('}');

  1311         }

  1312         out.append("\n};");

  1313     }

  1315     private int generateIf(byte[] byteCodes, int i, final Variable v2, final Variable v1, final String test, int topMostLabel) throws IOException {

  1316         int indx = i + readShortArg(byteCodes, i);

  1317         out.append("if (").append(v1)

  1318            .append(' ').append(test).append(' ')

  1319            .append(v2).append(") ");

  1320         goTo(out, i, indx, topMostLabel);

  1321         return i + 2;

  1322     }

  1324     private int readInt4(byte[] byteCodes, int offset) {

  1325         final int d = byteCodes[offset + 0] << 24;

  1326         final int c = byteCodes[offset + 1] << 16;

  1327         final int b = byteCodes[offset + 2] << 8;

  1328         final int a = byteCodes[offset + 3];

  1329         return (d & 0xff000000) | (c & 0xff0000) | (b & 0xff00) | (a & 0xff);

  1330     }

  1331     private static int readUByte(byte[] byteCodes, int offset) {

  1332         return byteCodes[offset] & 0xff;

  1333     }

  1335     private static int readUShort(byte[] byteCodes, int offset) {

  1336         return ((byteCodes[offset] & 0xff) << 8)

  1337                     | (byteCodes[offset + 1] & 0xff);

  1338     }

  1339     private static int readUShortArg(byte[] byteCodes, int offsetInstruction) {

  1340         return readUShort(byteCodes, offsetInstruction + 1);

  1341     }

  1343     private static int readShort(byte[] byteCodes, int offset) {

  1344         int signed = byteCodes[offset];

  1345         byte b0 = (byte)signed;

  1346         return (b0 << 8) | (byteCodes[offset + 1] & 0xff);

  1347     }

  1348     private static int readShortArg(byte[] byteCodes, int offsetInstruction) {

  1349         return readShort(byteCodes, offsetInstruction + 1);

  1350     }

  1352     private static void countArgs(String descriptor, char[] returnType, StringBuilder sig, StringBuilder cnt) {

  1353         int i = 0;

  1354         Boolean count = null;

  1355         boolean array = false;

  1356         sig.append("__");

  1357         int firstPos = sig.length();

  1358         while (i < descriptor.length()) {

  1359             char ch = descriptor.charAt(i++);

  1360             switch (ch) {

  1361                 case '(':

  1362                     count = true;

  1363                     continue;

  1364                 case ')':

  1365                     count = false;

  1366                     continue;

  1367                 case 'B':

  1368                 case 'C':

  1369                 case 'D':

  1370                 case 'F':

  1371                 case 'I':

  1372                 case 'J':

  1373                 case 'S':

  1374                 case 'Z':

  1375                     if (count) {

  1376                         if (array) {

  1377                             sig.append("_3");

  1378                         }

  1379                         sig.append(ch);

  1380                         if (ch == 'J' || ch == 'D') {

  1381                             cnt.append('1');

  1382                         } else {

  1383                             cnt.append('0');

  1384                         }

  1385                     } else {

  1386                         sig.insert(firstPos, ch);

  1387                         if (array) {

  1388                             returnType[0] = '[';

  1389                             sig.insert(firstPos, "_3");

  1390                         } else {

  1391                             returnType[0] = ch;

  1392                         }

  1393                     }

  1394                     array = false;

  1395                     continue;

  1396                 case 'V':

  1397                     assert !count;

  1398                     returnType[0] = 'V';

  1399                     sig.insert(firstPos, 'V');

  1400                     continue;

  1401                 case 'L':

  1402                     int next = descriptor.indexOf(';', i);

  1403                     String realSig = mangleSig(descriptor, i - 1, next + 1);

  1404                     if (count) {

  1405                         if (array) {

  1406                             sig.append("_3");

  1407                         }

  1408                         sig.append(realSig);

  1409                         cnt.append('0');

  1410                     } else {

  1411                         sig.insert(firstPos, realSig);

  1412                         if (array) {

  1413                             sig.insert(firstPos, "_3");

  1414                         }

  1415                         returnType[0] = 'L';

  1416                     }

  1417                     i = next + 1;

  1418                     array = false;

  1419                     continue;

  1420                 case '[':

  1421                     array = true;

  1422                     continue;

  1423                 default:

  1424                     throw new IllegalStateException("Invalid char: " + ch);

  1425             }

  1426         }

  1427     }

  1429     static String mangleSig(String sig) {

  1430         return mangleSig(sig, 0, sig.length());

  1431     }

  1433     private static String mangleMethodName(String name) {

  1434         StringBuilder sb = new StringBuilder(name.length() * 2);

  1435         int last = name.length();

  1436         for (int i = 0; i < last; i++) {

  1437             final char ch = name.charAt(i);

  1438             switch (ch) {

  1439                 case '_': sb.append("_1"); break;

  1440                 default: sb.append(ch); break;

  1441             }

  1442         }

  1443         return sb.toString();

  1444     }

  1445     private static String mangleSig(String txt, int first, int last) {

  1446         StringBuilder sb = new StringBuilder((last - first) * 2);

  1447         for (int i = first; i < last; i++) {

  1448             final char ch = txt.charAt(i);

  1449             switch (ch) {

  1450                 case '/': sb.append('_'); break;

  1451                 case '_': sb.append("_1"); break;

  1452                 case ';': sb.append("_2"); break;

  1453                 case '[': sb.append("_3"); break;

  1454                 default: sb.append(ch); break;

  1455             }

  1456         }

  1457         return sb.toString();

  1458     }

  1460     private static String mangleClassName(String name) {

  1461         return mangleSig(name);

  1462     }

  1464     private static String findMethodName(MethodData m, StringBuilder cnt) {

  1465         StringBuilder name = new StringBuilder();

  1466         if ("<init>".equals(m.getName())) { // NOI18N

  1467             name.append("cons"); // NOI18N

  1468         } else if ("<clinit>".equals(m.getName())) { // NOI18N

  1469             name.append("class"); // NOI18N

  1470         } else {

  1471             name.append(mangleMethodName(m.getName()));

  1472         }

  1474         countArgs(m.getInternalSig(), new char[1], name, cnt);

  1475         return name.toString();

  1476     }

  1478     static String findMethodName(String[] mi, StringBuilder cnt, char[] returnType) {

  1479         StringBuilder name = new StringBuilder();

  1480         String descr = mi[2];//mi.getDescriptor();

  1481         String nm= mi[1];

  1482         if ("<init>".equals(nm)) { // NOI18N

  1483             name.append("cons"); // NOI18N

  1484         } else {

  1485             name.append(mangleMethodName(nm));

  1486         }

  1487         countArgs(descr, returnType, name, cnt);

  1488         return name.toString();

  1489     }

  1491     private int invokeStaticMethod(byte[] byteCodes, int i, final StackMapper mapper, boolean isStatic)

  1492     throws IOException {

  1493         int methodIndex = readUShortArg(byteCodes, i);

  1494         String[] mi = jc.getFieldInfoName(methodIndex);

  1495         char[] returnType = { 'V' };

  1496         StringBuilder cnt = new StringBuilder();

  1497         String mn = findMethodName(mi, cnt, returnType);

  1499         final int numArguments = isStatic ? cnt.length() : cnt.length() + 1;

  1500         final Variable[] vars = new Variable[numArguments];

  1502         for (int j = numArguments - 1; j >= 0; --j) {

  1503             vars[j] = mapper.pop();

  1504         }

  1506         if (returnType[0] != 'V') {

  1507             out.append("var ")

  1508                .append(mapper.pushT(VarType.fromFieldType(returnType[0])))

  1509                .append(" = ");

  1510         }

  1512         final String in = mi[0];

  1513         out.append(accessClass(mangleClassName(in)));

  1514         out.append("(false).");

  1515         if (mn.startsWith("cons_")) {

  1516             out.append("constructor.");

  1517         }

  1518         out.append(mn);

  1519         if (isStatic) {

  1520             out.append('(');

  1521         } else {

  1522             out.append(".call(");

  1523         }

  1524         if (numArguments > 0) {

  1525             out.append(vars[0]);

  1526             for (int j = 1; j < numArguments; ++j) {

  1527                 out.append(", ");

  1528                 out.append(vars[j]);

  1529             }

  1530         }

  1531         out.append(");");

  1532         i += 2;

  1533         addReference(in);

  1534         return i;

  1535     }

  1536     private int invokeVirtualMethod(byte[] byteCodes, int i, final StackMapper mapper)

  1537     throws IOException {

  1538         int methodIndex = readUShortArg(byteCodes, i);

  1539         String[] mi = jc.getFieldInfoName(methodIndex);

  1540         char[] returnType = { 'V' };

  1541         StringBuilder cnt = new StringBuilder();

  1542         String mn = findMethodName(mi, cnt, returnType);

  1544         final int numArguments = cnt.length() + 1;

  1545         final Variable[] vars = new Variable[numArguments];

  1547         for (int j = numArguments - 1; j >= 0; --j) {

  1548             vars[j] = mapper.pop();

  1549         }

  1551         if (returnType[0] != 'V') {

  1552             out.append("var ")

  1553                .append(mapper.pushT(VarType.fromFieldType(returnType[0])))

  1554                .append(" = ");

  1555         }

  1557         out.append(vars[0]).append('.');

  1558         out.append(mn);

  1559         out.append('(');

  1560         String sep = "";

  1561         for (int j = 1; j < numArguments; ++j) {

  1562             out.append(sep);

  1563             out.append(vars[j]);

  1564             sep = ", ";

  1565         }

  1566         out.append(");");

  1567         i += 2;

  1568         return i;

  1569     }

  1571     private void addReference(String cn) throws IOException {

  1572         if (requireReference(cn)) {

  1573             debug(" /* needs " + cn + " */");

  1574         }

  1575     }

  1577     private void outType(String d, StringBuilder out) {

  1578         int arr = 0;

  1579         while (d.charAt(0) == '[') {

  1580             out.append('A');

  1581             d = d.substring(1);

  1582         }

  1583         if (d.charAt(0) == 'L') {

  1584             assert d.charAt(d.length() - 1) == ';';

  1585             out.append(d.replace('/', '_').substring(0, d.length() - 1));

  1586         } else {

  1587             out.append(d);

  1588         }

  1589     }

  1591     private String encodeConstant(int entryIndex) throws IOException {

  1592         String[] classRef = { null };

  1593         String s = jc.stringValue(entryIndex, classRef);

  1594         if (classRef[0] != null) {

  1595             if (classRef[0].startsWith("[")) {

  1596                 s = accessClass("java_lang_Class") + "(false).forName__Ljava_lang_Class_2Ljava_lang_String_2('" + classRef[0] + "');";

  1597             } else {

  1598                 addReference(classRef[0]);

  1599                 s = accessClass(mangleClassName(s)) + "(false).constructor.$class";

  1600             }

  1601         }

  1602         return s;

  1603     }

  1605     private String javaScriptBody(String destObject, MethodData m, boolean isStatic) throws IOException {

  1606         byte[] arr = m.findAnnotationData(true);

  1607         if (arr == null) {

  1608             return null;

  1609         }

  1610         final String jvmType = "Lorg/apidesign/bck2brwsr/core/JavaScriptBody;";

  1611         final String htmlType = "Lnet/java/html/js/JavaScriptBody;";

  1612         class P extends AnnotationParser {

  1613             public P() {

  1614                 super(false, true);

  1615             }

  1617             int cnt;

  1618             String[] args = new String[30];

  1619             String body;

  1620             boolean javacall;

  1621             boolean html4j;

  1623             @Override

  1624             protected void visitAttr(String type, String attr, String at, String value) {

  1625                 if (type.equals(jvmType)) {

  1626                     if ("body".equals(attr)) {

  1627                         body = value;

  1628                     } else if ("args".equals(attr)) {

  1629                         args[cnt++] = value;

  1630                     } else {

  1631                         throw new IllegalArgumentException(attr);

  1632                     }

  1633                 }

  1634                 if (type.equals(htmlType)) {

  1635                     html4j = true;

  1636                     if ("body".equals(attr)) {

  1637                         body = value;

  1638                     } else if ("args".equals(attr)) {

  1639                         args[cnt++] = value;

  1640                     } else if ("javacall".equals(attr)) {

  1641                         javacall = "1".equals(value);

  1642                     } else {

  1643                         throw new IllegalArgumentException(attr);

  1644                     }

  1645                 }

  1646             }

  1647         }

  1648         P p = new P();

  1649         p.parse(arr, jc);

  1650         if (p.body == null) {

  1651             return null;

  1652         }

  1653         StringBuilder cnt = new StringBuilder();

  1654         final String mn = findMethodName(m, cnt);

  1655         out.append(destObject).append(".").append(mn);

  1656         out.append(" = function(");

  1657         String space = "";

  1658         int index = 0;

  1659         StringBuilder toValue = new StringBuilder();

  1660         for (int i = 0; i < cnt.length(); i++) {

  1661             out.append(space);

  1662             space = outputArg(out, p.args, index);

  1663             if (p.html4j && space.length() > 0) {

  1664                 toValue.append("\n  ").append(p.args[index]).append(" = vm.org_apidesign_bck2brwsr_emul_lang_System(false).toJS(").

  1665                     append(p.args[index]).append(");");

  1666             }

  1667             index++;

  1668         }

  1669         out.append(") {").append("\n");

  1670         out.append(toValue.toString());

  1671         if (p.javacall) {

  1672             int lastSlash = jc.getClassName().lastIndexOf('/');

  1673             final String pkg = jc.getClassName().substring(0, lastSlash);

  1674             out.append(mangleCallbacks(pkg, p.body));

  1675             requireReference(pkg + "/$JsCallbacks$");

  1676         } else {

  1677             out.append(p.body);

  1678         }

  1679         out.append("\n}\n");

  1680         return mn;

  1681     }

  1683     private static CharSequence mangleCallbacks(String pkgName, String body) {

  1684         StringBuilder sb = new StringBuilder();

  1685         int pos = 0;

  1686         for (;;) {

  1687             int next = body.indexOf(".@", pos);

  1688             if (next == -1) {

  1689                 sb.append(body.substring(pos));

  1690                 body = sb.toString();

  1691                 break;

  1692             }

  1693             int ident = next;

  1694             while (ident > 0) {

  1695                 if (!Character.isJavaIdentifierPart(body.charAt(--ident))) {

  1696                     ident++;

  1697                     break;

  1698                 }

  1699             }

  1700             String refId = body.substring(ident, next);

  1702             sb.append(body.substring(pos, ident));

  1704             int sigBeg = body.indexOf('(', next);

  1705             int sigEnd = body.indexOf(')', sigBeg);

  1706             int colon4 = body.indexOf("::", next);

  1707             if (sigBeg == -1 || sigEnd == -1 || colon4 == -1) {

  1708                 throw new IllegalStateException("Malformed body " + body);

  1709             }

  1710             String fqn = body.substring(next + 2, colon4);

  1711             String method = body.substring(colon4 + 2, sigBeg);

  1712             String params = body.substring(sigBeg, sigEnd + 1);

  1714             int paramBeg = body.indexOf('(', sigEnd + 1);

  1716             sb.append("vm.").append(pkgName.replace('/', '_')).append("_$JsCallbacks$(false)._VM().");

  1717             sb.append(mangleJsCallbacks(fqn, method, params, false));

  1718             sb.append("(").append(refId);

  1719             if (body.charAt(paramBeg + 1) != ')') {

  1720                 sb.append(",");

  1721             }

  1722             pos = paramBeg + 1;

  1723         }

  1724         sb = null;

  1725         pos = 0;

  1726         for (;;) {

  1727             int next = body.indexOf("@", pos);

  1728             if (next == -1) {

  1729                 if (sb == null) {

  1730                     return body;

  1731                 }

  1732                 sb.append(body.substring(pos));

  1733                 return sb;

  1734             }

  1735             if (sb == null) {

  1736                 sb = new StringBuilder();

  1737             }

  1739             sb.append(body.substring(pos, next));

  1741             int sigBeg = body.indexOf('(', next);

  1742             int sigEnd = body.indexOf(')', sigBeg);

  1743             int colon4 = body.indexOf("::", next);

  1744             if (sigBeg == -1 || sigEnd == -1 || colon4 == -1) {

  1745                 throw new IllegalStateException("Malformed body " + body);

  1746             }

  1747             String fqn = body.substring(next + 1, colon4);

  1748             String method = body.substring(colon4 + 2, sigBeg);

  1749             String params = body.substring(sigBeg, sigEnd + 1);

  1751             int paramBeg = body.indexOf('(', sigEnd + 1);

  1753             sb.append("vm.").append(pkgName.replace('/', '_')).append("_$JsCallbacks$(false)._VM().");

  1754             sb.append(mangleJsCallbacks(fqn, method, params, true));

  1755             sb.append("(");

  1756             pos = paramBeg + 1;

  1757         }

  1758     }

  1760     static String mangleJsCallbacks(String fqn, String method, String params, boolean isStatic) {

  1761         if (params.startsWith("(")) {

  1762             params = params.substring(1);

  1763         }

  1764         if (params.endsWith(")")) {

  1765             params = params.substring(0, params.length() - 1);

  1766         }

  1767         StringBuilder sb = new StringBuilder();

  1768         final String fqnu = fqn.replace('.', '_');

  1769         final String rfqn = mangleClassName(fqnu);

  1770         final String rm = mangleMethodName(method);

  1771         final String srp;

  1772         {

  1773             StringBuilder pb = new StringBuilder();

  1774             int len = params.length();

  1775             int indx = 0;

  1776             while (indx < len) {

  1777                 char ch = params.charAt(indx);

  1778                 if (ch == '[' || ch == 'L') {

  1779                     pb.append("Ljava/lang/Object;");

  1780                     indx = params.indexOf(';', indx) + 1;

  1781                 } else {

  1782                     pb.append(ch);

  1783                     indx++;

  1784                 }

  1785             }

  1786             srp = mangleSig(pb.toString());

  1787         }

  1788         final String rp = mangleSig(params);

  1789         final String mrp = mangleMethodName(rp);

  1790         sb.append(rfqn).append("$").append(rm).

  1791             append('$').append(mrp).append("__Ljava_lang_Object_2");

  1792         if (!isStatic) {

  1793             sb.append('L').append(fqnu).append("_2");

  1794         }

  1795         sb.append(srp);

  1796         return sb.toString();

  1797     }

  1799     private static String className(ClassData jc) {

  1800         //return jc.getName().getInternalName().replace('/', '_');

  1801         return mangleClassName(jc.getClassName());

  1802     }

  1804     private static String[] findAnnotation(

  1805         byte[] arr, ClassData cd, final String className,

  1806         final String... attrNames

  1807     ) throws IOException {

  1808         if (arr == null) {

  1809             return null;

  1810         }

  1811         final String[] values = new String[attrNames.length];

  1812         final boolean[] found = { false };

  1813         final String jvmType = "L" + className.replace('.', '/') + ";";

  1814         AnnotationParser ap = new AnnotationParser(false, true) {

  1815             @Override

  1816             protected void visitAttr(String type, String attr, String at, String value) {

  1817                 if (type.equals(jvmType)) {

  1818                     found[0] = true;

  1819                     for (int i = 0; i < attrNames.length; i++) {

  1820                         if (attrNames[i].equals(attr)) {

  1821                             values[i] = value;

  1822                         }

  1823                     }

  1824                 }

  1825             }

  1827         };

  1828         ap.parse(arr, cd);

  1829         return found[0] ? values : null;

  1830     }

  1832     private CharSequence initField(FieldData v) {

  1833         final String is = v.getInternalSig();

  1834         if (is.length() == 1) {

  1835             switch (is.charAt(0)) {

  1836                 case 'S':

  1837                 case 'J':

  1838                 case 'B':

  1839                 case 'Z':

  1840                 case 'C':

  1841                 case 'I': return " = 0;";

  1842                 case 'F':

  1843                 case 'D': return " = 0.0;";

  1844                 default:

  1845                     throw new IllegalStateException(is);

  1846             }

  1847         }

  1848         return " = null;";

  1849     }

  1851     private void generateAnno(ClassData cd, final Appendable out, byte[] data) throws IOException {

  1852         AnnotationParser ap = new AnnotationParser(true, false) {

  1853             int[] cnt = new int[32];

  1854             int depth;

  1856             @Override

  1857             protected void visitAnnotationStart(String attrType, boolean top) throws IOException {

  1858                 final String slashType = attrType.substring(1, attrType.length() - 1);

  1859                 requireReference(slashType);

  1861                 if (cnt[depth]++ > 0) {

  1862                     out.append(",");

  1863                 }

  1864                 if (top) {

  1865                     out.append('"').append(attrType).append("\" : ");

  1866                 }

  1867                 out.append("{\n");

  1868                 cnt[++depth] = 0;

  1869             }

  1871             @Override

  1872             protected void visitAnnotationEnd(String type, boolean top) throws IOException {

  1873                 out.append("\n}\n");

  1874                 depth--;

  1875             }

  1877             @Override

  1878             protected void visitValueStart(String attrName, char type) throws IOException {

  1879                 if (cnt[depth]++ > 0) {

  1880                     out.append(",\n");

  1881                 }

  1882                 cnt[++depth] = 0;

  1883                 if (attrName != null) {

  1884                     out.append(attrName).append(" : ");

  1885                 }

  1886                 if (type == '[') {

  1887                     out.append("[");

  1888                 }

  1889             }

  1891             @Override

  1892             protected void visitValueEnd(String attrName, char type) throws IOException {

  1893                 if (type == '[') {

  1894                     out.append("]");

  1895                 }

  1896                 depth--;

  1897             }

  1899             @Override

  1900             protected void visitAttr(String type, String attr, String attrType, String value)

  1901             throws IOException {

  1902                 if (attr == null && value == null) {

  1903                     return;

  1904                 }

  1905                 out.append(value);

  1906             }

  1908             @Override

  1909             protected void visitEnumAttr(String type, String attr, String attrType, String value)

  1910             throws IOException {

  1911                 final String slashType = attrType.substring(1, attrType.length() - 1);

  1912                 requireReference(slashType);

  1914                 out.append(accessClass(mangleClassName(slashType)))

  1915                    .append("(false).constructor.fld_").append(value);

  1916             }

  1917         };

  1918         ap.parse(data, cd);

  1919     }

  1921     private static String outputArg(Appendable out, String[] args, int indx) throws IOException {

  1922         final String name = args[indx];

  1923         if (name == null) {

  1924             return "";

  1925         }

  1926         if (name.contains(",")) {

  1927             throw new IOException("Wrong parameter with ',': " + name);

  1928         }

  1929         out.append(name);

  1930         return ",";

  1931     }

  1933     final void emit(

  1934         StackMapper sm,

  1935         final Appendable out,

  1936         final String format, final CharSequence... params

  1937     ) throws IOException {

  1938         sm.flush(out);

  1939         emitImpl(out, format, params);

  1940     }

  1941     static void emitImpl(final Appendable out,

  1942                              final String format,

  1943                              final CharSequence... params) throws IOException {

  1944         final int length = format.length();

  1946         int processed = 0;

  1947         int paramOffset = format.indexOf('@');

  1948         while ((paramOffset != -1) && (paramOffset < (length - 1))) {

  1949             final char paramChar = format.charAt(paramOffset + 1);

  1950             if ((paramChar >= '1') && (paramChar <= '9')) {

  1951                 final int paramIndex = paramChar - '0' - 1;

  1953                 out.append(format, processed, paramOffset);

  1954                 out.append(params[paramIndex]);

  1956                 ++paramOffset;

  1957                 processed = paramOffset + 1;

  1958             }

  1960             paramOffset = format.indexOf('@', paramOffset + 1);

  1961         }

  1963         out.append(format, processed, length);

  1964     }

  1966     private void generateCatch(TrapData[] traps, int current, int topMostLabel) throws IOException {

  1967         out.append("} catch (e) {\n");

  1968         int finallyPC = -1;

  1969         for (TrapData e : traps) {

  1970             if (e == null) {

  1971                 break;

  1972             }

  1973             if (e.catch_cpx != 0) { //not finally

  1974                 final String classInternalName = jc.getClassName(e.catch_cpx);

  1975                 addReference(classInternalName);

  1976                 out.append("e = vm.java_lang_Throwable(false).bck2BrwsrCnvrt(e);");

  1977                 out.append("if (e.$instOf_" + classInternalName.replace('/', '_') + ") {");

  1978                 out.append("var stA0 = e;");

  1979                 goTo(out, current, e.handler_pc, topMostLabel);

  1980                 out.append("}\n");

  1981             } else {

  1982                 finallyPC = e.handler_pc;

  1983             }

  1984         }

  1985         if (finallyPC == -1) {

  1986             out.append("throw e;");

  1987         } else {

  1988             out.append("var stA0 = e;");

  1989             goTo(out, current, finallyPC, topMostLabel);

  1990         }

  1991         out.append("\n}");

  1992     }

  1994     private static void goTo(Appendable out, int current, int to, int canBack) throws IOException {

  1995         if (to < current) {

  1996             if (canBack < to) {

  1997                 out.append("{ gt = 0; continue X_" + to + "; }");

  1998             } else {

  1999                 out.append("{ gt = " + to + "; continue X_0; }");

  2000             }

  2001         } else {

  2002             out.append("{ gt = " + to + "; break IF; }");

  2003         }

  2004     }

  2006     private static void emitIf(

  2007         StackMapper sm,

  2008         Appendable out, String pattern,

  2009         Variable param,

  2010         int current, int to, int canBack

  2011     ) throws IOException {

  2012         sm.flush(out);

  2013         emitImpl(out, pattern, param);

  2014         goTo(out, current, to, canBack);

  2015     }

  2017     private void generateNewArray(int atype, final StackMapper smapper) throws IOException, IllegalStateException {

  2018         String jvmType;

  2019         switch (atype) {

  2020             case 4: jvmType = "[Z"; break;

  2021             case 5: jvmType = "[C"; break;

  2022             case 6: jvmType = "[F"; break;

  2023             case 7: jvmType = "[D"; break;

  2024             case 8: jvmType = "[B"; break;

  2025             case 9: jvmType = "[S"; break;

  2026             case 10: jvmType = "[I"; break;

  2027             case 11: jvmType = "[J"; break;

  2028             default: throw new IllegalStateException("Array type: " + atype);

  2029         }

  2030         emit(smapper, out, "var @2 = Array.prototype.newArray__Ljava_lang_Object_2ZLjava_lang_String_2I(true, '@3', @1);",

  2031              smapper.popI(), smapper.pushA(), jvmType);

  2032     }

  2034     private void generateANewArray(int type, final StackMapper smapper) throws IOException {

  2035         String typeName = jc.getClassName(type);

  2036         if (typeName.startsWith("[")) {

  2037             typeName = "[" + typeName;

  2038         } else {

  2039             typeName = "[L" + typeName + ";";

  2040         }

  2041         emit(smapper, out, "var @2 = Array.prototype.newArray__Ljava_lang_Object_2ZLjava_lang_String_2I(false, '@3', @1);",

  2042              smapper.popI(), smapper.pushA(), typeName);

  2043     }

  2045     private int generateMultiANewArray(int type, final byte[] byteCodes, int i, final StackMapper smapper) throws IOException {

  2046         String typeName = jc.getClassName(type);

  2047         int dim = readUByte(byteCodes, ++i);

  2048         StringBuilder dims = new StringBuilder();

  2049         dims.append('[');

  2050         for (int d = 0; d < dim; d++) {

  2051             if (d != 0) {

  2052                 dims.insert(1, ",");

  2053             }

  2054             dims.insert(1, smapper.popI());

  2055         }

  2056         dims.append(']');

  2057         emit(smapper, out, "var @2 = Array.prototype.multiNewArray__Ljava_lang_Object_2Ljava_lang_String_2_3II('@3', @1, 0);",

  2058              dims.toString(), smapper.pushA(), typeName);

  2059         return i;

  2060     }

  2062     private int generateTableSwitch(int i, final byte[] byteCodes, final StackMapper smapper, int topMostLabel) throws IOException {

  2063         int table = i / 4 * 4 + 4;

  2064         int dflt = i + readInt4(byteCodes, table);

  2065         table += 4;

  2066         int low = readInt4(byteCodes, table);

  2067         table += 4;

  2068         int high = readInt4(byteCodes, table);

  2069         table += 4;

  2070         out.append("switch (").append(smapper.popI()).append(") {\n");

  2071         while (low <= high) {

  2072             int offset = i + readInt4(byteCodes, table);

  2073             table += 4;

  2074             out.append("  case " + low).append(":"); goTo(out, i, offset, topMostLabel); out.append('\n');

  2075             low++;

  2076         }

  2077         out.append("  default: ");

  2078         goTo(out, i, dflt, topMostLabel);

  2079         out.append("\n}");

  2080         i = table - 1;

  2081         return i;

  2082     }

  2084     private int generateLookupSwitch(int i, final byte[] byteCodes, final StackMapper smapper, int topMostLabel) throws IOException {

  2085         int table = i / 4 * 4 + 4;

  2086         int dflt = i + readInt4(byteCodes, table);

  2087         table += 4;

  2088         int n = readInt4(byteCodes, table);

  2089         table += 4;

  2090         out.append("switch (").append(smapper.popI()).append(") {\n");

  2091         while (n-- > 0) {

  2092             int cnstnt = readInt4(byteCodes, table);

  2093             table += 4;

  2094             int offset = i + readInt4(byteCodes, table);

  2095             table += 4;

  2096             out.append("  case " + cnstnt).append(": "); goTo(out, i, offset, topMostLabel); out.append('\n');

  2097         }

  2098         out.append("  default: ");

  2099         goTo(out, i, dflt, topMostLabel);

  2100         out.append("\n}");

  2101         i = table - 1;

  2102         return i;

  2103     }

  2105     private void generateInstanceOf(int indx, final StackMapper smapper) throws IOException {

  2106         final String type = jc.getClassName(indx);

  2107         if (!type.startsWith("[")) {

  2108             emit(smapper, out, "var @2 = @1 != null && @1.$instOf_@3 ? 1 : 0;",

  2109                  smapper.popA(), smapper.pushI(),

  2110                  type.replace('/', '_'));

  2111         } else {

  2112             emit(smapper, out, "var @2 = vm.java_lang_Class(false).forName__Ljava_lang_Class_2Ljava_lang_String_2('@3').isInstance__ZLjava_lang_Object_2(@1);",

  2113                 smapper.popA(), smapper.pushI(),

  2114                 type

  2115             );

  2116         }

  2117     }

  2119     private void generateCheckcast(int indx, final StackMapper smapper) throws IOException {

  2120         final String type = jc.getClassName(indx);

  2121         if (!type.startsWith("[")) {

  2122             emit(smapper, out,

  2123                  "if (@1 !== null && !@1.$instOf_@2) throw vm.java_lang_ClassCastException(true);",

  2124                  smapper.getA(0), type.replace('/', '_'));

  2125         } else {

  2126             emit(smapper, out, "vm.java_lang_Class(false).forName__Ljava_lang_Class_2Ljava_lang_String_2('@2').cast__Ljava_lang_Object_2Ljava_lang_Object_2(@1);",

  2127                  smapper.getA(0), type

  2128             );

  2129         }

  2130     }

  2132     private void generateByteCodeComment(int prev, int i, final byte[] byteCodes) throws IOException {

  2133         for (int j = prev; j <= i; j++) {

  2134             out.append(" ");

  2135             final int cc = readUByte(byteCodes, j);

  2136             out.append(Integer.toString(cc));

  2137         }

  2138     }

  2139 }

author	Jaroslav Tulach <jaroslav.tulach@apidesign.org>
	Sat, 15 Feb 2014 17:23:24 +0100
branch	ReducedStack
changeset 1455	398911a8f401
parent 1453	e046cfcb8f00
child 1457	b9386cc3ff7b
permissions	-rw-r--r--