hg/bck2brwsr: rt/vm/src/main/java/org/apidesign/vm4brwsr/ByteCodeToJavaScript.java@489fe829817f

     1 /**

     2  * Back 2 Browser Bytecode Translator

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

     4  *

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

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

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

     8  *

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

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

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

    12  * GNU General Public License for more details.

    13  *

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

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

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

    17  */

    18 package org.apidesign.vm4brwsr;

    20 import java.io.IOException;

    21 import java.io.InputStream;

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

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

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

    26  *

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

    28  */

    29 abstract class ByteCodeToJavaScript implements Appendable {

    30     private ClassData jc;

    31     private final Appendable out;

    32     private boolean outChanged;

    33     private boolean callbacks;

    35     protected ByteCodeToJavaScript(Appendable out) {

    36         this.out = out;

    37     }

    39     @Override

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

    41         out.append(csq);

    42         outChanged = true;

    43         return this;

    44     }

    46     @Override

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

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

    49         outChanged = true;

    50         return this;

    51     }

    53     @Override

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

    55         out.append(c);

    56         outChanged = true;

    57         return this;

    58     }

    60     /* Collects additional required resources.

    61      *

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

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

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

    65      */

    66     protected abstract boolean requireReference(String internalClassName);

    68     /*

    69      * @param resourcePath name of resources to read

    70      */

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

    73     protected abstract void requireResource(String resourcePath) throws IOException;

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

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

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

    78      *

    79      * @param className suggested name of the class

    80      */

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

    82         return className + " = ";

    83     }

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

    85         return classOperation;

    86     }

    88     protected String accessField(String object, String mangledName,

    89                                  String[] fieldInfoName) throws IOException {

    90         return object + "." + mangledName;

    91     }

    93     protected String accessStaticMethod(

    94                              String object,

    95                              String mangledName,

    96                              String[] fieldInfoName) throws IOException {

    97         return object + "." + mangledName;

    98     }

   100     protected String accessVirtualMethod(

   101             String object,

   102             String mangledName,

   103             String[] fieldInfoName,

   104             int params

   105     ) throws IOException {

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

   107     }

   109     protected void declaredClass(ClassData classData, String mangledName)

   110             throws IOException {

   111     }

   113     protected void declaredField(FieldData fieldData,

   114                                  String destObject,

   115                                  String mangledName) throws IOException {

   116     }

   118     protected void declaredMethod(MethodData methodData,

   119                                   String destObject,

   120                                   String mangledName) throws IOException {

   121     }

   123     /** Prints out a debug message.

   124      *

   125      * @param msg the message

   126      * @return true if the message has been printed

   127      * @throws IOException

   128      */

   129     boolean debug(String msg) throws IOException {

   130         append(msg);

   131         return true;

   132     }

   134     /**

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

   136      *

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

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

   139      *

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

   141      */

   143     public String compile(InputStream classFile) throws IOException {

   144         return compile(new ClassData(classFile));

   145     }

   147     protected String compile(ClassData classData) throws IOException {

   148         this.jc = classData;

   149         final String cn = this.jc.getClassName();

   150         this.callbacks = cn.endsWith("/$JsCallbacks$");

   151         if (jc.getMajor_version() < 50 && !cn.endsWith("/package-info")) {

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

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

   154             );

   155         }

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

   157         {

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

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

   160                 "resource", "processByteCode"

   161             );

   162             if (arr != null) {

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

   164                     requireScript(arr[0]);

   165                 }

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

   167                     return null;

   168                 }

   169             }

   170         }

   171         final String jsResource;

   172         {

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

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

   175                 "value"

   176             );

   177             if (arr != null) {

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

   179                     jsResource = arr[0];

   180                 } else {

   181                     int last = cn.lastIndexOf('/');

   182                     jsResource = cn.substring(0, last + 1).replace('.', '/') + arr[0];

   183                 }

   184             } else {

   185                 jsResource = null;

   186             }

   187         }

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

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

   190             "container", "prototype"

   191         );

   192         StringArray toInitilize = new StringArray();

   193         final String className = className(jc);

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

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

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

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

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

   199         if (proto == null) {

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

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

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

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

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

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

   206         } else {

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

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

   209                 proto[0] = "p";

   210             }

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

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

   213         }

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

   215             if (v.isStatic()) {

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

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

   218                         continue;

   219                     }

   220                 }

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

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

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

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

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

   226             } else {

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

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

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

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

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

   232                    .append("; };");

   233             }

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

   236         }

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

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

   239             if (javaScriptOnly(onlyArr)) continue;

   240             String destObject;

   241             String mn;

   242             append("\n    ");

   243             if (m.isStatic()) {

   244                 destObject = "c";

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

   246             } else {

   247                 if (m.isConstructor()) {

   248                     destObject = "CLS";

   249                     mn = generateInstanceMethod(destObject, m);

   250                 } else {

   251                     destObject = "c";

   252                     mn = generateInstanceMethod(destObject, m);

   253                 }

   254             }

   255             declaredMethod(m, destObject, mn);

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

   257             if (runAnno != null) {

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

   259                 generateAnno(jc, runAnno);

   260                 append("\n    };");

   261             }

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

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

   264         }

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

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

   267         String instOfName = "$instOf_" + className;

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

   269         if (jc.isInterface()) {

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

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

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

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

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

   275                     append("\n        try {");

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

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

   278                     append("\n        }");

   279                 }

   280             }

   281         }

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

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

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

   285             requireReference(superInterface);

   286         }

   287         append("\n    }");

   288         append("\n    try {");

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

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

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

   292         append("\n    }");

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

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

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

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

   297         append("\n    CLS.$class.jvmName = '").append(cn).append("';");

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

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

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

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

   302         if (classAnno != null) {

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

   304             generateAnno(jc, classAnno);

   305             append("\n    };");

   306         }

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

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

   309         }

   311         if (jsResource != null) {

   312             requireResource(jsResource);

   313         }

   315         append("\n  }");

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

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

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

   319         append("\n    }");

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

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

   322             if (javaScriptOnly(onlyArr)) continue;

   323             if (!v.isStatic()) {

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

   325                     append(className).append('_').

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

   327             }

   328         }

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

   330         append("\n  }");

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

   332         append("\n};");

   334         declaredClass(jc, className);

   336 //        StringBuilder sb = new StringBuilder();

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

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

   339 //        }

   340         return "";

   341     }

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

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

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

   346             "name", "value"

   347         );

   348         if (only != null) {

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

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

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

   352             }

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

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

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

   356             }

   357             return true;

   358         }

   359         return false;

   360     }

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

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

   363         if (jsb != null) {

   364             return jsb;

   365         }

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

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

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

   369             if (defineProp) {

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

   371             } else {

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

   373             }

   374         }

   375         return mn;

   376     }

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

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

   380         if (jsb != null) {

   381             return jsb;

   382         }

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

   384         generateMethod(destObject, mn, m);

   385         return mn;

   386     }

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

   389             throws IOException {

   390         final StackMapIterator stackMapIterator = m.createStackMapIterator();

   391         TrapDataIterator trap = m.getTrapDataIterator();

   392         final LocalsMapper lmapper =

   393                 new LocalsMapper(stackMapIterator.getArguments());

   395         boolean defineProp =

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

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

   399         if (defineProp) {

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

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

   402         } else {

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

   404         }

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

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

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

   409         if (byteCodes == null) {

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

   411                .append(jc.getClassName()).append('.')

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

   413             if (defineProp) {

   414                 append("}});");

   415             } else {

   416                 append("};");

   417             }

   418             return defineProp;

   419         }

   421         final StackMapper smapper = new StackMapper();

   423         if (!m.isStatic()) {

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

   425         }

   427         int lastStackFrame;

   428         TrapData[] previousTrap = null;

   429         boolean wide = false;

   430         boolean didBranches;

   431         if (stackMapIterator.isEmpty()) {

   432             didBranches = false;

   433             lastStackFrame = 0;

   434         } else {

   435             didBranches = true;

   436             lastStackFrame = -1;

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

   438         }

   440         int openBraces = 0;

   441         int topMostLabel = 0;

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

   443             int prev = i;

   444             outChanged = false;

   445             stackMapIterator.advanceTo(i);

   446             boolean changeInCatch = trap.advanceTo(i);

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

   448                 if (previousTrap != null) {

   449                     generateCatch(previousTrap, i, topMostLabel);

   450                     previousTrap = null;

   451                 }

   452             }

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

   454                 smapper.flush(this);

   455                 if (i != 0) {

   456                     append("    }\n");

   457                 }

   458                 if (openBraces > 64) {

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

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

   461                     }

   462                     openBraces = 1;

   463                     topMostLabel = i;

   464                 }

   466                 lastStackFrame = stackMapIterator.getFrameIndex();

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

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

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

   470                 openBraces++;

   471                 changeInCatch = true;

   472             } else {

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

   474             }

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

   476                 append("try {");

   477                 previousTrap = trap.current();

   478             }

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

   480             switch (c) {

   481                 case opc_aload_0:

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

   483                     break;

   484                 case opc_iload_0:

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

   486                     break;

   487                 case opc_lload_0:

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

   489                     break;

   490                 case opc_fload_0:

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

   492                     break;

   493                 case opc_dload_0:

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

   495                     break;

   496                 case opc_aload_1:

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

   498                     break;

   499                 case opc_iload_1:

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

   501                     break;

   502                 case opc_lload_1:

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

   504                     break;

   505                 case opc_fload_1:

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

   507                     break;

   508                 case opc_dload_1:

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

   510                     break;

   511                 case opc_aload_2:

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

   513                     break;

   514                 case opc_iload_2:

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

   516                     break;

   517                 case opc_lload_2:

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

   519                     break;

   520                 case opc_fload_2:

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

   522                     break;

   523                 case opc_dload_2:

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

   525                     break;

   526                 case opc_aload_3:

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

   528                     break;

   529                 case opc_iload_3:

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

   531                     break;

   532                 case opc_lload_3:

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

   534                     break;

   535                 case opc_fload_3:

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

   537                     break;

   538                 case opc_dload_3:

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

   540                     break;

   541                 case opc_iload: {

   542                     ++i;

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

   544                                           : readUByte(byteCodes, i);

   545                     wide = false;

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

   547                     break;

   548                 }

   549                 case opc_lload: {

   550                     ++i;

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

   552                                           : readUByte(byteCodes, i);

   553                     wide = false;

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

   555                     break;

   556                 }

   557                 case opc_fload: {

   558                     ++i;

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

   560                                           : readUByte(byteCodes, i);

   561                     wide = false;

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

   563                     break;

   564                 }

   565                 case opc_dload: {

   566                     ++i;

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

   568                                           : readUByte(byteCodes, i);

   569                     wide = false;

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

   571                     break;

   572                 }

   573                 case opc_aload: {

   574                     ++i;

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

   576                                           : readUByte(byteCodes, i);

   577                     wide = false;

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

   579                     break;

   580                 }

   581                 case opc_istore: {

   582                     ++i;

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

   584                                           : readUByte(byteCodes, i);

   585                     wide = false;

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

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

   588                     break;

   589                 }

   590                 case opc_lstore: {

   591                     ++i;

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

   593                                           : readUByte(byteCodes, i);

   594                     wide = false;

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

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

   597                     break;

   598                 }

   599                 case opc_fstore: {

   600                     ++i;

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

   602                                           : readUByte(byteCodes, i);

   603                     wide = false;

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

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

   606                     break;

   607                 }

   608                 case opc_dstore: {

   609                     ++i;

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

   611                                           : readUByte(byteCodes, i);

   612                     wide = false;

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

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

   615                     break;

   616                 }

   617                 case opc_astore: {

   618                     ++i;

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

   620                                           : readUByte(byteCodes, i);

   621                     wide = false;

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

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

   624                     break;

   625                 }

   626                 case opc_astore_0:

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

   628                     break;

   629                 case opc_istore_0:

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

   631                     break;

   632                 case opc_lstore_0:

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

   634                     break;

   635                 case opc_fstore_0:

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

   637                     break;

   638                 case opc_dstore_0:

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

   640                     break;

   641                 case opc_astore_1:

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

   643                     break;

   644                 case opc_istore_1:

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

   646                     break;

   647                 case opc_lstore_1:

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

   649                     break;

   650                 case opc_fstore_1:

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

   652                     break;

   653                 case opc_dstore_1:

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

   655                     break;

   656                 case opc_astore_2:

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

   658                     break;

   659                 case opc_istore_2:

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

   661                     break;

   662                 case opc_lstore_2:

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

   664                     break;

   665                 case opc_fstore_2:

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

   667                     break;

   668                 case opc_dstore_2:

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

   670                     break;

   671                 case opc_astore_3:

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

   673                     break;

   674                 case opc_istore_3:

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

   676                     break;

   677                 case opc_lstore_3:

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

   679                     break;

   680                 case opc_fstore_3:

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

   682                     break;

   683                 case opc_dstore_3:

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

   685                     break;

   686                 case opc_iadd:

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

   688                     break;

   689                 case opc_ladd:

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

   691                     break;

   692                 case opc_fadd:

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

   694                     break;

   695                 case opc_dadd:

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

   697                     break;

   698                 case opc_isub:

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

   700                     break;

   701                 case opc_lsub:

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

   703                     break;

   704                 case opc_fsub:

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

   706                     break;

   707                 case opc_dsub:

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

   709                     break;

   710                 case opc_imul:

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

   712                     break;

   713                 case opc_lmul:

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

   715                     break;

   716                 case opc_fmul:

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

   718                     break;

   719                 case opc_dmul:

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

   721                     break;

   722                 case opc_idiv:

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

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

   725                     break;

   726                 case opc_ldiv:

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

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

   729                     break;

   730                 case opc_fdiv:

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

   732                     break;

   733                 case opc_ddiv:

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

   735                     break;

   736                 case opc_irem:

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

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

   739                     break;

   740                 case opc_lrem:

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

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

   743                     break;

   744                 case opc_frem:

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

   746                     break;

   747                 case opc_drem:

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

   749                     break;

   750                 case opc_iand:

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

   752                     break;

   753                 case opc_land:

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

   755                     break;

   756                 case opc_ior:

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

   758                     break;

   759                 case opc_lor:

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

   761                     break;

   762                 case opc_ixor:

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

   764                     break;

   765                 case opc_lxor:

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

   767                     break;

   768                 case opc_ineg:

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

   770                     break;

   771                 case opc_lneg:

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

   773                     break;

   774                 case opc_fneg:

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

   776                     break;

   777                 case opc_dneg:

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

   779                     break;

   780                 case opc_ishl:

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

   782                     break;

   783                 case opc_lshl:

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

   785                     break;

   786                 case opc_ishr:

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

   788                     break;

   789                 case opc_lshr:

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

   791                     break;

   792                 case opc_iushr:

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

   794                     break;

   795                 case opc_lushr:

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

   797                     break;

   798                 case opc_iinc: {

   799                     ++i;

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

   801                                              : readUByte(byteCodes, i);

   802                     ++i;

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

   804                                             : byteCodes[i];

   805                     wide = false;

   806                     if (incrBy == 1) {

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

   808                     } else {

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

   810                              lmapper.getI(varIndx),

   811                              Integer.toString(incrBy));

   812                     }

   813                     break;

   814                 }

   815                 case opc_return:

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

   817                     break;

   818                 case opc_ireturn:

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

   820                     break;

   821                 case opc_lreturn:

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

   823                     break;

   824                 case opc_freturn:

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

   826                     break;

   827                 case opc_dreturn:

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

   829                     break;

   830                 case opc_areturn:

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

   832                     break;

   833                 case opc_i2l:

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

   835                     break;

   836                 case opc_i2f:

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

   838                     break;

   839                 case opc_i2d:

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

   841                     break;

   842                 case opc_l2i:

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

   844                     break;

   845                     // max int check?

   846                 case opc_l2f:

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

   848                     break;

   849                 case opc_l2d:

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

   851                     break;

   852                 case opc_f2d:

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

   854                          smapper.getF(0));

   855                     break;

   856                 case opc_d2f:

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

   858                          smapper.getD(0));

   859                     break;

   860                 case opc_f2i:

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

   862                          smapper.getF(0));

   863                     break;

   864                 case opc_f2l:

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

   866                          smapper.getF(0));

   867                     break;

   868                 case opc_d2i:

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

   870                          smapper.getD(0));

   871                     break;

   872                 case opc_d2l:

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

   874                     break;

   875                 case opc_i2b:

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

   877                     break;

   878                 case opc_i2c:

   879                 case opc_i2s:

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

   881                     break;

   882                 case opc_aconst_null:

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

   884                     break;

   885                 case opc_iconst_m1:

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

   887                     break;

   888                 case opc_iconst_0:

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

   890                     break;

   891                 case opc_dconst_0:

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

   893                     break;

   894                 case opc_lconst_0:

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

   896                     break;

   897                 case opc_fconst_0:

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

   899                     break;

   900                 case opc_iconst_1:

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

   902                     break;

   903                 case opc_lconst_1:

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

   905                     break;

   906                 case opc_fconst_1:

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

   908                     break;

   909                 case opc_dconst_1:

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

   911                     break;

   912                 case opc_iconst_2:

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

   914                     break;

   915                 case opc_fconst_2:

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

   917                     break;

   918                 case opc_iconst_3:

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

   920                     break;

   921                 case opc_iconst_4:

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

   923                     break;

   924                 case opc_iconst_5:

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

   926                     break;

   927                 case opc_ldc: {

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

   929                     String v = encodeConstant(indx);

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

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

   932                     break;

   933                 }

   934                 case opc_ldc_w:

   935                 case opc_ldc2_w: {

   936                     int indx = readUShortArg(byteCodes, i);

   937                     i += 2;

   938                     String v = encodeConstant(indx);

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

   940                     if (type == VarType.LONG) {

   941                         final Long lv = new Long(v);

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

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

   944                         if (hi == 0) {

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

   946                         } else {

   947                             smapper.assign(this, VarType.LONG,

   948                                 "0x" + Integer.toHexString(hi) + ".next32(0x" +

   949                                     Integer.toHexString(low) + ")"

   950                             );

   951                         }

   952                     } else {

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

   954                     }

   955                     break;

   956                 }

   957                 case opc_lcmp:

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

   959                     break;

   960                 case opc_fcmpl:

   961                 case opc_fcmpg:

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

   963                     break;

   964                 case opc_dcmpl:

   965                 case opc_dcmpg:

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

   967                     break;

   968                 case opc_if_acmpeq:

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

   970                                    "===", topMostLabel);

   971                     break;

   972                 case opc_if_acmpne:

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

   974                                    "!==", topMostLabel);

   975                     break;

   976                 case opc_if_icmpeq:

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

   978                                    "==", topMostLabel);

   979                     break;

   980                 case opc_ifeq: {

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

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

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

   984                     i += 2;

   985                     break;

   986                 }

   987                 case opc_ifne: {

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

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

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

   991                     i += 2;

   992                     break;

   993                 }

   994                 case opc_iflt: {

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

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

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

   998                     i += 2;

   999                     break;

  1000                 }

  1001                 case opc_ifle: {

  1002                     int indx = i + readShortArg(byteCodes, i);

  1003                     emitIf(smapper, this, "if ((@1) <= 0) ",

  1004                          smapper.popI(), i, indx, topMostLabel);

  1005                     i += 2;

  1006                     break;

  1007                 }

  1008                 case opc_ifgt: {

  1009                     int indx = i + readShortArg(byteCodes, i);

  1010                     emitIf(smapper, this, "if ((@1) > 0) ",

  1011                          smapper.popI(), i, indx, topMostLabel);

  1012                     i += 2;

  1013                     break;

  1014                 }

  1015                 case opc_ifge: {

  1016                     int indx = i + readShortArg(byteCodes, i);

  1017                     emitIf(smapper, this, "if ((@1) >= 0) ",

  1018                          smapper.popI(), i, indx, topMostLabel);

  1019                     i += 2;

  1020                     break;

  1021                 }

  1022                 case opc_ifnonnull: {

  1023                     int indx = i + readShortArg(byteCodes, i);

  1024                     emitIf(smapper, this, "if ((@1) !== null) ",

  1025                          smapper.popA(), i, indx, topMostLabel);

  1026                     i += 2;

  1027                     break;

  1028                 }

  1029                 case opc_ifnull: {

  1030                     int indx = i + readShortArg(byteCodes, i);

  1031                     emitIf(smapper, this, "if ((@1) === null) ",

  1032                          smapper.popA(), i, indx, topMostLabel);

  1033                     i += 2;

  1034                     break;

  1035                 }

  1036                 case opc_if_icmpne:

  1037                     i = generateIf(smapper, byteCodes, i, smapper.popI(), smapper.popI(),

  1038                                    "!=", topMostLabel);

  1039                     break;

  1040                 case opc_if_icmplt:

  1041                     i = generateIf(smapper, byteCodes, i, smapper.popI(), smapper.popI(),

  1042                                    "<", topMostLabel);

  1043                     break;

  1044                 case opc_if_icmple:

  1045                     i = generateIf(smapper, byteCodes, i, smapper.popI(), smapper.popI(),

  1046                                    "<=", topMostLabel);

  1047                     break;

  1048                 case opc_if_icmpgt:

  1049                     i = generateIf(smapper, byteCodes, i, smapper.popI(), smapper.popI(),

  1050                                    ">", topMostLabel);

  1051                     break;

  1052                 case opc_if_icmpge:

  1053                     i = generateIf(smapper, byteCodes, i, smapper.popI(), smapper.popI(),

  1054                                    ">=", topMostLabel);

  1055                     break;

  1056                 case opc_goto: {

  1057                     smapper.flush(this);

  1058                     int indx = i + readShortArg(byteCodes, i);

  1059                     goTo(this, i, indx, topMostLabel);

  1060                     i += 2;

  1061                     break;

  1062                 }

  1063                 case opc_lookupswitch: {

  1064                     i = generateLookupSwitch(i, byteCodes, smapper, topMostLabel);

  1065                     break;

  1066                 }

  1067                 case opc_tableswitch: {

  1068                     i = generateTableSwitch(i, byteCodes, smapper, topMostLabel);

  1069                     break;

  1070                 }

  1071                 case opc_invokeinterface: {

  1072                     i = invokeVirtualMethod(byteCodes, i, smapper) + 2;

  1073                     break;

  1074                 }

  1075                 case opc_invokevirtual:

  1076                     i = invokeVirtualMethod(byteCodes, i, smapper);

  1077                     break;

  1078                 case opc_invokespecial:

  1079                     i = invokeStaticMethod(byteCodes, i, smapper, false);

  1080                     break;

  1081                 case opc_invokestatic:

  1082                     i = invokeStaticMethod(byteCodes, i, smapper, true);

  1083                     break;

  1084                 case opc_invokedynamic: {

  1085                     int indx = readUShortArg(byteCodes, i);

  1086                     println("invoke dynamic: " + indx);

  1087                     ByteCodeParser.CPX2 c2 = jc.getCpoolEntry(indx);

  1088                     BootMethodData bm = jc.getBootMethod(c2.cpx1);

  1089                     CPX2 methodHandle = jc.getCpoolEntry(bm.method);

  1090                     println("  type: " + methodHandle.cpx1);

  1091                     String[] mi = jc.getFieldInfoName(methodHandle.cpx2);

  1092                     String mcn = mangleClassName(mi[0]);

  1093                     char[] returnType = {'V'};

  1094                     StringBuilder cnt = new StringBuilder();

  1095                     String mn = findMethodName(mi, cnt, returnType);

  1096                     StringBuilder sb = new StringBuilder();

  1097                     sb.append("We don't handle invokedynamic, need to preprocess ahead-of-time:\n");

  1098                     sb.append("  mi[0]: ").append(mi[0]).append("\n");

  1099                     sb.append("  mi[1]: ").append(mi[1]).append("\n");

  1100                     sb.append("  mi[2]: ").append(mi[2]).append("\n");

  1101                     sb.append("  mn   : ").append(mn).append("\n");

  1102                     sb.append("  name and type: ").append(jc.stringValue(c2.cpx2, true)).append("\n");

  1103                     throw new IOException(sb.toString());

  1104                     /*

  1105                     CPX2 nameAndType = jc.getCpoolEntry(c2.cpx2);

  1106                     String type = jc.StringValue(nameAndType.cpx2);

  1107                     String object = accessClass(mcn) + "(false)";

  1108                     if (mn.startsWith("cons_")) {

  1109                         object += ".constructor";

  1110                     }

  1111                     append("var metHan = ");

  1112                     append(accessStaticMethod(object, mn, mi));

  1113                     append('(');

  1114                     String lookup = accessClass("java_lang_invoke_MethodHandles") + "(false).findFor__Ljava_lang_invoke_MethodHandles$Lookup_2Ljava_lang_Class_2(CLS.$class)";

  1115                     append(lookup);

  1116                     append(", '").append(mi[1]).append("', ");

  1117                     String methodType = accessClass("java_lang_invoke_MethodType") + "(false).fromMethodDescriptorString__Ljava_lang_invoke_MethodType_2Ljava_lang_String_2Ljava_lang_ClassLoader_2(";

  1118                     append(methodType).append("'").append(type).append("', null)");

  1119 //                    if (numArguments > 0) {

  1120 //                        append(vars[0]);

  1121 //                        for (int j = 1; j < numArguments; ++j) {

  1122 //                            append(", ");

  1123 //                            append(vars[j]);

  1124 //                        }

  1125 //                    }

  1126                     append(");");

  1127                     emit(smapper, this, "throw 'Invoke dynamic: ' + @1 + ': ' + metHan;", "" + indx);

  1128                     i += 4;

  1129                     break;

  1130                     */

  1131                 }

  1132                 case opc_new: {

  1133                     int indx = readUShortArg(byteCodes, i);

  1134                     String ci = jc.getClassName(indx);

  1135                     emit(smapper, this, "var @1 = new @2;",

  1136                          smapper.pushA(), accessClass(mangleClassName(ci)));

  1137                     addReference(ci);

  1138                     i += 2;

  1139                     break;

  1140                 }

  1141                 case opc_newarray:

  1142                     int atype = readUByte(byteCodes, ++i);

  1143                     generateNewArray(atype, smapper);

  1144                     break;

  1145                 case opc_anewarray: {

  1146                     int type = readUShortArg(byteCodes, i);

  1147                     i += 2;

  1148                     generateANewArray(type, smapper);

  1149                     break;

  1150                 }

  1151                 case opc_multianewarray: {

  1152                     int type = readUShortArg(byteCodes, i);

  1153                     i += 2;

  1154                     i = generateMultiANewArray(type, byteCodes, i, smapper);

  1155                     break;

  1156                 }

  1157                 case opc_arraylength:

  1158                     smapper.replace(this, VarType.INTEGER, "(@1).length", smapper.getA(0));

  1159                     break;

  1160                 case opc_lastore:

  1161                     emit(smapper, this, "Array.at(@3, @2, @1);",

  1162                          smapper.popL(), smapper.popI(), smapper.popA());

  1163                     break;

  1164                 case opc_fastore:

  1165                     emit(smapper, this, "Array.at(@3, @2, @1);",

  1166                          smapper.popF(), smapper.popI(), smapper.popA());

  1167                     break;

  1168                 case opc_dastore:

  1169                     emit(smapper, this, "Array.at(@3, @2, @1);",

  1170                          smapper.popD(), smapper.popI(), smapper.popA());

  1171                     break;

  1172                 case opc_aastore:

  1173                     emit(smapper, this, "Array.at(@3, @2, @1);",

  1174                          smapper.popA(), smapper.popI(), smapper.popA());

  1175                     break;

  1176                 case opc_iastore:

  1177                 case opc_bastore:

  1178                 case opc_castore:

  1179                 case opc_sastore:

  1180                     emit(smapper, this, "Array.at(@3, @2, @1);",

  1181                          smapper.popI(), smapper.popI(), smapper.popA());

  1182                     break;

  1183                 case opc_laload:

  1184                     smapper.replace(this, VarType.LONG, "Array.at(@2, @1)",

  1185                          smapper.popI(), smapper.getA(0));

  1186                     break;

  1187                 case opc_faload:

  1188                     smapper.replace(this, VarType.FLOAT, "Array.at(@2, @1)",

  1189                          smapper.popI(), smapper.getA(0));

  1190                     break;

  1191                 case opc_daload:

  1192                     smapper.replace(this, VarType.DOUBLE, "Array.at(@2, @1)",

  1193                          smapper.popI(), smapper.getA(0));

  1194                     break;

  1195                 case opc_aaload:

  1196                     smapper.replace(this, VarType.REFERENCE, "Array.at(@2, @1)",

  1197                          smapper.popI(), smapper.getA(0));

  1198                     break;

  1199                 case opc_iaload:

  1200                 case opc_baload:

  1201                 case opc_caload:

  1202                 case opc_saload:

  1203                     smapper.replace(this, VarType.INTEGER, "Array.at(@2, @1)",

  1204                          smapper.popI(), smapper.getA(0));

  1205                     break;

  1206                 case opc_pop:

  1207                 case opc_pop2:

  1208                     smapper.pop(1);

  1209                     debug("/* pop */");

  1210                     break;

  1211                 case opc_dup: {

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

  1213                     if (smapper.isDirty()) {

  1214                         emit(smapper, this, "var @1 = @2;", smapper.pushT(v.getType()), v);

  1215                     } else {

  1216                         smapper.assign(this, v.getType(), v);

  1217                     }

  1218                     break;

  1219                 }

  1220                 case opc_dup2: {

  1221                     final Variable vi1 = smapper.get(0);

  1223                     if (vi1.isCategory2()) {

  1224                         emit(smapper, this, "var @1 = @2;",

  1225                              smapper.pushT(vi1.getType()), vi1);

  1226                     } else {

  1227                         final Variable vi2 = smapper.get(1);

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

  1229                              smapper.pushT(vi2.getType()), vi2,

  1230                              smapper.pushT(vi1.getType()), vi1);

  1231                     }

  1232                     break;

  1233                 }

  1234                 case opc_dup_x1: {

  1235                     final Variable vi1 = smapper.pop(this);

  1236                     final Variable vi2 = smapper.pop(this);

  1237                     final Variable vo3 = smapper.pushT(vi1.getType());

  1238                     final Variable vo2 = smapper.pushT(vi2.getType());

  1239                     final Variable vo1 = smapper.pushT(vi1.getType());

  1241                     emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6;",

  1242                          vo1, vi1, vo2, vi2, vo3, vo1);

  1243                     break;

  1244                 }

  1245                 case opc_dup2_x1: {

  1246                     final Variable vi1 = smapper.pop(this);

  1247                     final Variable vi2 = smapper.pop(this);

  1249                     if (vi1.isCategory2()) {

  1250                         final Variable vo3 = smapper.pushT(vi1.getType());

  1251                         final Variable vo2 = smapper.pushT(vi2.getType());

  1252                         final Variable vo1 = smapper.pushT(vi1.getType());

  1254                         emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6;",

  1255                              vo1, vi1, vo2, vi2, vo3, vo1);

  1256                     } else {

  1257                         final Variable vi3 = smapper.pop(this);

  1258                         final Variable vo5 = smapper.pushT(vi2.getType());

  1259                         final Variable vo4 = smapper.pushT(vi1.getType());

  1260                         final Variable vo3 = smapper.pushT(vi3.getType());

  1261                         final Variable vo2 = smapper.pushT(vi2.getType());

  1262                         final Variable vo1 = smapper.pushT(vi1.getType());

  1264                         emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6,",

  1265                              vo1, vi1, vo2, vi2, vo3, vi3);

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

  1267                              vo4, vo1, vo5, vo2);

  1268                     }

  1269                     break;

  1270                 }

  1271                 case opc_dup_x2: {

  1272                     final Variable vi1 = smapper.pop(this);

  1273                     final Variable vi2 = smapper.pop(this);

  1275                     if (vi2.isCategory2()) {

  1276                         final Variable vo3 = smapper.pushT(vi1.getType());

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

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

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

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

  1282                     } else {

  1283                         final Variable vi3 = smapper.pop(this);

  1284                         final Variable vo4 = smapper.pushT(vi1.getType());

  1285                         final Variable vo3 = smapper.pushT(vi3.getType());

  1286                         final Variable vo2 = smapper.pushT(vi2.getType());

  1287                         final Variable vo1 = smapper.pushT(vi1.getType());

  1289                         emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6, @7 = @8;",

  1290                              vo1, vi1, vo2, vi2, vo3, vi3, vo4, vo1);

  1291                     }

  1292                     break;

  1293                 }

  1294                 case opc_dup2_x2: {

  1295                     final Variable vi1 = smapper.pop(this);

  1296                     final Variable vi2 = smapper.pop(this);

  1298                     if (vi1.isCategory2()) {

  1299                         if (vi2.isCategory2()) {

  1300                             final Variable vo3 = smapper.pushT(vi1.getType());

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

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

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

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

  1306                         } else {

  1307                             final Variable vi3 = smapper.pop(this);

  1308                             final Variable vo4 = smapper.pushT(vi1.getType());

  1309                             final Variable vo3 = smapper.pushT(vi3.getType());

  1310                             final Variable vo2 = smapper.pushT(vi2.getType());

  1311                             final Variable vo1 = smapper.pushT(vi1.getType());

  1313                             emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6, @7 = @8;",

  1314                                  vo1, vi1, vo2, vi2, vo3, vi3, vo4, vo1);

  1315                         }

  1316                     } else {

  1317                         final Variable vi3 = smapper.pop(this);

  1319                         if (vi3.isCategory2()) {

  1320                             final Variable vo5 = smapper.pushT(vi2.getType());

  1321                             final Variable vo4 = smapper.pushT(vi1.getType());

  1322                             final Variable vo3 = smapper.pushT(vi3.getType());

  1323                             final Variable vo2 = smapper.pushT(vi2.getType());

  1324                             final Variable vo1 = smapper.pushT(vi1.getType());

  1326                             emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6,",

  1327                                  vo1, vi1, vo2, vi2, vo3, vi3);

  1328                             emit(smapper, this, " @1 = @2, @3 = @4;",

  1329                                  vo4, vo1, vo5, vo2);

  1330                         } else {

  1331                             final Variable vi4 = smapper.pop(this);

  1332                             final Variable vo6 = smapper.pushT(vi2.getType());

  1333                             final Variable vo5 = smapper.pushT(vi1.getType());

  1334                             final Variable vo4 = smapper.pushT(vi4.getType());

  1335                             final Variable vo3 = smapper.pushT(vi3.getType());

  1336                             final Variable vo2 = smapper.pushT(vi2.getType());

  1337                             final Variable vo1 = smapper.pushT(vi1.getType());

  1339                             emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6, @7 = @8,",

  1340                                  vo1, vi1, vo2, vi2, vo3, vi3, vo4, vi4);

  1341                             emit(smapper, this, " @1 = @2, @3 = @4;",

  1342                                  vo5, vo1, vo6, vo2);

  1343                         }

  1344                     }

  1345                     break;

  1346                 }

  1347                 case opc_swap: {

  1348                     final Variable vi1 = smapper.get(0);

  1349                     final Variable vi2 = smapper.get(1);

  1351                     if (vi1.getType() == vi2.getType()) {

  1352                         final Variable tmp = smapper.pushT(vi1.getType());

  1354                         emit(smapper, this, "var @1 = @2, @2 = @3, @3 = @1;",

  1355                              tmp, vi1, vi2);

  1356                         smapper.pop(1);

  1357                     } else {

  1358                         smapper.pop(2);

  1359                         smapper.pushT(vi1.getType());

  1360                         smapper.pushT(vi2.getType());

  1361                     }

  1362                     break;

  1363                 }

  1364                 case opc_bipush:

  1365                     smapper.assign(this, VarType.INTEGER,

  1366                         "(" + Integer.toString(byteCodes[++i]) + ")");

  1367                     break;

  1368                 case opc_sipush:

  1369                     smapper.assign(this, VarType.INTEGER,

  1370                         "(" + Integer.toString(readShortArg(byteCodes, i)) + ")"

  1371                     );

  1372                     i += 2;

  1373                     break;

  1374                 case opc_getfield: {

  1375                     int indx = readUShortArg(byteCodes, i);

  1376                     String[] fi = jc.getFieldInfoName(indx);

  1377                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1378                     final String mangleClass = mangleClassName(fi[0]);

  1379                     final String mangleClassAccess = accessClass(mangleClass);

  1380                     smapper.replace(this, type, "@2.call(@1)",

  1381                          smapper.getA(0),

  1382                          accessField(mangleClassAccess + "(false)",

  1383                                      "_" + fi[1], fi)

  1384                     );

  1385                     i += 2;

  1386                     break;

  1387                 }

  1388                 case opc_putfield: {

  1389                     int indx = readUShortArg(byteCodes, i);

  1390                     String[] fi = jc.getFieldInfoName(indx);

  1391                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1392                     final String mangleClass = mangleClassName(fi[0]);

  1393                     final String mangleClassAccess = accessClass(mangleClass);

  1394                     emit(smapper, this, "@3.call(@2, @1);",

  1395                          smapper.popT(type),

  1396                          smapper.popA(),

  1397                          accessField(mangleClassAccess + "(false)",

  1398                                      "_" + fi[1], fi));

  1399                     i += 2;

  1400                     break;

  1401                 }

  1402                 case opc_getstatic: {

  1403                     int indx = readUShortArg(byteCodes, i);

  1404                     String[] fi = jc.getFieldInfoName(indx);

  1405                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1406                     String ac = accessClass(mangleClassName(fi[0]));

  1407                     String af = accessField(ac + "(false)", "_" + fi[1], fi);

  1408                     smapper.assign(this, type, af + "()");

  1409                     i += 2;

  1410                     addReference(fi[0]);

  1411                     break;

  1412                 }

  1413                 case opc_putstatic: {

  1414                     int indx = readUShortArg(byteCodes, i);

  1415                     String[] fi = jc.getFieldInfoName(indx);

  1416                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1417                     emit(smapper, this, "@1(false)._@2(@3);",

  1418                          accessClass(mangleClassName(fi[0])), fi[1],

  1419                          smapper.popT(type));

  1420                     i += 2;

  1421                     addReference(fi[0]);

  1422                     break;

  1423                 }

  1424                 case opc_checkcast: {

  1425                     int indx = readUShortArg(byteCodes, i);

  1426                     generateCheckcast(indx, smapper);

  1427                     i += 2;

  1428                     break;

  1429                 }

  1430                 case opc_instanceof: {

  1431                     int indx = readUShortArg(byteCodes, i);

  1432                     generateInstanceOf(indx, smapper);

  1433                     i += 2;

  1434                     break;

  1435                 }

  1436                 case opc_athrow: {

  1437                     final CharSequence v = smapper.popA();

  1438                     smapper.clear();

  1440                     emit(smapper, this, "{ var @1 = @2; throw @2; }",

  1441                          smapper.pushA(), v);

  1442                     break;

  1443                 }

  1445                 case opc_monitorenter: {

  1446                     debug("/* monitor enter */");

  1447                     smapper.popA();

  1448                     break;

  1449                 }

  1451                 case opc_monitorexit: {

  1452                     debug("/* monitor exit */");

  1453                     smapper.popA();

  1454                     break;

  1455                 }

  1457                 case opc_wide:

  1458                     wide = true;

  1459                     break;

  1461                 default: {

  1462                     wide = false;

  1463                     emit(smapper, this, "throw 'unknown bytecode @1';",

  1464                          Integer.toString(c));

  1465                 }

  1466             }

  1467             if (debug(" //")) {

  1468                 generateByteCodeComment(prev, i, byteCodes);

  1469             }

  1470             if (outChanged) {

  1471                 append("\n");

  1472             }

  1473         }

  1474         if (previousTrap != null) {

  1475             generateCatch(previousTrap, byteCodes.length, topMostLabel);

  1476         }

  1477         if (didBranches) {

  1478             append("\n    }\n");

  1479         }

  1480         while (openBraces-- > 0) {

  1481             append('}');

  1482         }

  1483         if (defineProp) {

  1484             append("\n}});");

  1485         } else {

  1486             append("\n};");

  1487         }

  1488         return defineProp;

  1489     }

  1491     private int generateIf(StackMapper mapper, byte[] byteCodes,

  1492         int i, final CharSequence v2, final CharSequence v1,

  1493         final String test, int topMostLabel

  1494     ) throws IOException {

  1495         mapper.flush(this);

  1496         int indx = i + readShortArg(byteCodes, i);

  1497         append("if ((").append(v1)

  1498            .append(") ").append(test).append(" (")

  1499            .append(v2).append(")) ");

  1500         goTo(this, i, indx, topMostLabel);

  1501         return i + 2;

  1502     }

  1504     private int readInt4(byte[] byteCodes, int offset) {

  1505         final int d = byteCodes[offset + 0] << 24;

  1506         final int c = byteCodes[offset + 1] << 16;

  1507         final int b = byteCodes[offset + 2] << 8;

  1508         final int a = byteCodes[offset + 3];

  1509         return (d & 0xff000000) | (c & 0xff0000) | (b & 0xff00) | (a & 0xff);

  1510     }

  1511     private static int readUByte(byte[] byteCodes, int offset) {

  1512         return byteCodes[offset] & 0xff;

  1513     }

  1515     private static int readUShort(byte[] byteCodes, int offset) {

  1516         return ((byteCodes[offset] & 0xff) << 8)

  1517                     | (byteCodes[offset + 1] & 0xff);

  1518     }

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

  1520         return readUShort(byteCodes, offsetInstruction + 1);

  1521     }

  1523     private static int readShort(byte[] byteCodes, int offset) {

  1524         int signed = byteCodes[offset];

  1525         byte b0 = (byte)signed;

  1526         return (b0 << 8) | (byteCodes[offset + 1] & 0xff);

  1527     }

  1528     private static int readShortArg(byte[] byteCodes, int offsetInstruction) {

  1529         return readShort(byteCodes, offsetInstruction + 1);

  1530     }

  1532     private static void countArgs(String descriptor, char[] returnType, StringBuilder sig, StringBuilder cnt) {

  1533         int i = 0;

  1534         Boolean count = null;

  1535         boolean array = false;

  1536         sig.append("__");

  1537         int firstPos = sig.length();

  1538         while (i < descriptor.length()) {

  1539             char ch = descriptor.charAt(i++);

  1540             switch (ch) {

  1541                 case '(':

  1542                     count = true;

  1543                     continue;

  1544                 case ')':

  1545                     count = false;

  1546                     continue;

  1547                 case 'B':

  1548                 case 'C':

  1549                 case 'D':

  1550                 case 'F':

  1551                 case 'I':

  1552                 case 'J':

  1553                 case 'S':

  1554                 case 'Z':

  1555                     if (count) {

  1556                         if (array) {

  1557                             sig.append("_3");

  1558                         }

  1559                         sig.append(ch);

  1560                         if (ch == 'J' || ch == 'D') {

  1561                             cnt.append('1');

  1562                         } else {

  1563                             cnt.append('0');

  1564                         }

  1565                     } else {

  1566                         sig.insert(firstPos, ch);

  1567                         if (array) {

  1568                             returnType[0] = '[';

  1569                             sig.insert(firstPos, "_3");

  1570                         } else {

  1571                             returnType[0] = ch;

  1572                         }

  1573                     }

  1574                     array = false;

  1575                     continue;

  1576                 case 'V':

  1577                     assert !count;

  1578                     returnType[0] = 'V';

  1579                     sig.insert(firstPos, 'V');

  1580                     continue;

  1581                 case 'L':

  1582                     int next = descriptor.indexOf(';', i);

  1583                     String realSig = mangleSig(descriptor, i - 1, next + 1);

  1584                     if (count) {

  1585                         if (array) {

  1586                             sig.append("_3");

  1587                         }

  1588                         sig.append(realSig);

  1589                         cnt.append('0');

  1590                     } else {

  1591                         sig.insert(firstPos, realSig);

  1592                         if (array) {

  1593                             sig.insert(firstPos, "_3");

  1594                         }

  1595                         returnType[0] = 'L';

  1596                     }

  1597                     i = next + 1;

  1598                     array = false;

  1599                     continue;

  1600                 case '[':

  1601                     array = true;

  1602                     continue;

  1603                 default:

  1604                     throw new IllegalStateException("Invalid char: " + ch);

  1605             }

  1606         }

  1607     }

  1609     static String mangleSig(String sig) {

  1610         return mangleSig(sig, 0, sig.length());

  1611     }

  1613     private static String mangleMethodName(String name) {

  1614         StringBuilder sb = new StringBuilder(name.length() * 2);

  1615         int last = name.length();

  1616         for (int i = 0; i < last; i++) {

  1617             final char ch = name.charAt(i);

  1618             switch (ch) {

  1619                 case '_': sb.append("_1"); break;

  1620                 default: sb.append(ch); break;

  1621             }

  1622         }

  1623         return sb.toString();

  1624     }

  1625     private static String mangleSig(String txt, int first, int last) {

  1626         StringBuilder sb = new StringBuilder((last - first) * 2);

  1627         for (int i = first; i < last; i++) {

  1628             final char ch = txt.charAt(i);

  1629             switch (ch) {

  1630                 case '/': sb.append('_'); break;

  1631                 case '_': sb.append("_1"); break;

  1632                 case ';': sb.append("_2"); break;

  1633                 case '[': sb.append("_3"); break;

  1634                 default:

  1635                     if (Character.isJavaIdentifierPart(ch)) {

  1636                         sb.append(ch);

  1637                     } else {

  1638                         sb.append("_0");

  1639                         String hex = Integer.toHexString(ch).toLowerCase();

  1640                         for (int m = hex.length(); m < 4; m++) {

  1641                             sb.append("0");

  1642                         }

  1643                         sb.append(hex);

  1644                     }

  1645                 break;

  1646             }

  1647         }

  1648         return sb.toString();

  1649     }

  1651     private static String mangleClassName(String name) {

  1652         return mangleSig(name);

  1653     }

  1655     private static String findMethodName(MethodData m, StringBuilder cnt) {

  1656         StringBuilder name = new StringBuilder();

  1657         if ("<init>".equals(m.getName())) { // NOI18N

  1658             name.append("cons"); // NOI18N

  1659         } else if ("<clinit>".equals(m.getName())) { // NOI18N

  1660             name.append("class"); // NOI18N

  1661         } else {

  1662             name.append(mangleMethodName(m.getName()));

  1663         }

  1665         countArgs(m.getInternalSig(), new char[1], name, cnt);

  1666         return name.toString();

  1667     }

  1669     static String findMethodName(String[] mi, StringBuilder cnt, char[] returnType) {

  1670         StringBuilder name = new StringBuilder();

  1671         String descr = mi[2];//mi.getDescriptor();

  1672         String nm= mi[1];

  1673         if ("<init>".equals(nm)) { // NOI18N

  1674             name.append("cons"); // NOI18N

  1675         } else {

  1676             name.append(mangleMethodName(nm));

  1677         }

  1678         countArgs(descr, returnType, name, cnt);

  1679         return name.toString();

  1680     }

  1682     private int invokeStaticMethod(byte[] byteCodes, int i, final StackMapper mapper, boolean isStatic)

  1683     throws IOException {

  1684         int methodIndex = readUShortArg(byteCodes, i);

  1685         String[] mi = jc.getFieldInfoName(methodIndex);

  1686         char[] returnType = { 'V' };

  1687         StringBuilder cnt = new StringBuilder();

  1688         String mn = findMethodName(mi, cnt, returnType);

  1690         final int numArguments = isStatic ? cnt.length() : cnt.length() + 1;

  1691         final CharSequence[] vars = new CharSequence[numArguments];

  1693         for (int j = numArguments - 1; j >= 0; --j) {

  1694             vars[j] = mapper.popValue();

  1695         }

  1697         if (returnType[0] != 'V') {

  1698             mapper.flush(this);

  1699             append("var ")

  1700                .append(mapper.pushT(VarType.fromFieldType(returnType[0])))

  1701                .append(" = ");

  1702         }

  1704         final String in = mi[0];

  1705         String mcn;

  1706         if (callbacks && (

  1707             in.equals("org/apidesign/html/boot/spi/Fn") ||

  1708             in.equals("org/netbeans/html/boot/spi/Fn")

  1709         )) {

  1710             mcn = "java_lang_Class";

  1711         } else {

  1712             mcn = mangleClassName(in);

  1713         }

  1714         String object = accessClass(mcn) + "(false)";

  1715         if (mn.startsWith("cons_")) {

  1716             object += ".constructor";

  1717         }

  1718         append(accessStaticMethod(object, mn, mi));

  1719         if (isStatic) {

  1720             append('(');

  1721         } else {

  1722             append(".call(");

  1723         }

  1724         if (numArguments > 0) {

  1725             append(vars[0]);

  1726             for (int j = 1; j < numArguments; ++j) {

  1727                 append(", ");

  1728                 append(vars[j]);

  1729             }

  1730         }

  1731         append(");");

  1732         i += 2;

  1733         addReference(in);

  1734         return i;

  1735     }

  1736     private int invokeVirtualMethod(byte[] byteCodes, int i, final StackMapper mapper)

  1737     throws IOException {

  1738         int methodIndex = readUShortArg(byteCodes, i);

  1739         String[] mi = jc.getFieldInfoName(methodIndex);

  1740         char[] returnType = { 'V' };

  1741         StringBuilder cnt = new StringBuilder();

  1742         String mn = findMethodName(mi, cnt, returnType);

  1744         final int numArguments = cnt.length() + 1;

  1745         final CharSequence[] vars =  new CharSequence[numArguments];

  1747         for (int j = numArguments - 1; j >= 0; --j) {

  1748             vars[j] = mapper.popValue();

  1749         }

  1751         if (returnType[0] != 'V') {

  1752             append("var ")

  1753                .append(mapper.pushT(VarType.fromFieldType(returnType[0])))

  1754                .append(" = ");

  1755         }

  1757         append(accessVirtualMethod(vars[0].toString(), mn, mi, numArguments));

  1758         String sep = "";

  1759         for (int j = 1; j < numArguments; ++j) {

  1760             append(sep);

  1761             append(vars[j]);

  1762             sep = ", ";

  1763         }

  1764         append(");");

  1765         i += 2;

  1766         return i;

  1767     }

  1769     private void addReference(String cn) throws IOException {

  1770         if (requireReference(cn)) {

  1771             debug(" /* needs " + cn + " */");

  1772         }

  1773     }

  1775     private void outType(String d, StringBuilder out) {

  1776         int arr = 0;

  1777         while (d.charAt(0) == '[') {

  1778             out.append('A');

  1779             d = d.substring(1);

  1780         }

  1781         if (d.charAt(0) == 'L') {

  1782             assert d.charAt(d.length() - 1) == ';';

  1783             out.append(d.replace('/', '_').substring(0, d.length() - 1));

  1784         } else {

  1785             out.append(d);

  1786         }

  1787     }

  1789     private String encodeConstant(int entryIndex) throws IOException {

  1790         String[] classRef = { null };

  1791         String s = jc.stringValue(entryIndex, classRef);

  1792         if (classRef[0] != null) {

  1793             if (classRef[0].startsWith("[")) {

  1794                 s = accessClass("java_lang_Class") + "(false)['forName__Ljava_lang_Class_2Ljava_lang_String_2']('" + classRef[0] + "')";

  1795             } else {

  1796                 addReference(classRef[0]);

  1797                 s = accessClass(mangleClassName(s)) + "(false).constructor.$class";

  1798             }

  1799         }

  1800         return s;

  1801     }

  1803     private String javaScriptBody(String destObject, MethodData m, boolean isStatic) throws IOException {

  1804         byte[] arr = m.findAnnotationData(true);

  1805         if (arr == null) {

  1806             return null;

  1807         }

  1808         final String jvmType = "Lorg/apidesign/bck2brwsr/core/JavaScriptBody;";

  1809         final String htmlType = "Lnet/java/html/js/JavaScriptBody;";

  1810         class P extends AnnotationParser {

  1811             public P() {

  1812                 super(false, true);

  1813             }

  1815             int cnt;

  1816             String[] args = new String[30];

  1817             String body;

  1818             boolean javacall;

  1819             boolean html4j;

  1821             @Override

  1822             protected void visitAttr(String type, String attr, String at, String value) {

  1823                 if (type.equals(jvmType)) {

  1824                     if ("body".equals(attr)) {

  1825                         body = value;

  1826                     } else if ("args".equals(attr)) {

  1827                         args[cnt++] = value;

  1828                     } else {

  1829                         throw new IllegalArgumentException(attr);

  1830                     }

  1831                 }

  1832                 if (type.equals(htmlType)) {

  1833                     html4j = true;

  1834                     if ("body".equals(attr)) {

  1835                         body = value;

  1836                     } else if ("args".equals(attr)) {

  1837                         args[cnt++] = value;

  1838                     } else if ("javacall".equals(attr)) {

  1839                         javacall = "1".equals(value);

  1840                     } else if ("wait4js".equals(attr)) {

  1841                         // ignore, we always invoke synchronously

  1842                     } else {

  1843                         throw new IllegalArgumentException(attr);

  1844                     }

  1845                 }

  1846             }

  1847         }

  1848         P p = new P();

  1849         p.parse(arr, jc);

  1850         if (p.body == null) {

  1851             return null;

  1852         }

  1853         StringBuilder cnt = new StringBuilder();

  1854         final String mn = findMethodName(m, cnt);

  1855         append("m = ").append(destObject).append(".").append(mn);

  1856         append(" = function(");

  1857         String space = "";

  1858         int index = 0;

  1859         StringBuilder toValue = new StringBuilder();

  1860         for (int i = 0; i < cnt.length(); i++) {

  1861             append(space);

  1862             space = outputArg(this, p.args, index);

  1863             if (p.html4j && space.length() > 0) {

  1864                 toValue.append("\n  ").append(p.args[index]).append(" = ")

  1865                     .append(accessClass("java_lang_Class")).append("(false).toJS(").

  1866                     append(p.args[index]).append(");");

  1867             }

  1868             index++;

  1869         }

  1870         append(") {").append("\n");

  1871         append(toValue.toString());

  1872         if (p.javacall) {

  1873             int lastSlash = jc.getClassName().lastIndexOf('/');

  1874             final String pkg = jc.getClassName().substring(0, lastSlash);

  1875             append(mangleCallbacks(pkg, p.body));

  1876             requireReference(pkg + "/$JsCallbacks$");

  1877         } else {

  1878             append(p.body);

  1879         }

  1880         append("\n}\n");

  1881         return mn;

  1882     }

  1884     private static CharSequence mangleCallbacks(String pkgName, String body) {

  1885         StringBuilder sb = new StringBuilder();

  1886         int pos = 0;

  1887         for (;;) {

  1888             int next = body.indexOf(".@", pos);

  1889             if (next == -1) {

  1890                 sb.append(body.substring(pos));

  1891                 body = sb.toString();

  1892                 break;

  1893             }

  1894             int ident = next;

  1895             while (ident > 0) {

  1896                 if (!Character.isJavaIdentifierPart(body.charAt(--ident))) {

  1897                     ident++;

  1898                     break;

  1899                 }

  1900             }

  1901             String refId = body.substring(ident, next);

  1903             sb.append(body.substring(pos, ident));

  1905             int sigBeg = body.indexOf('(', next);

  1906             int sigEnd = body.indexOf(')', sigBeg);

  1907             int colon4 = body.indexOf("::", next);

  1908             if (sigBeg == -1 || sigEnd == -1 || colon4 == -1) {

  1909                 throw new IllegalStateException("Malformed body " + body);

  1910             }

  1911             String fqn = body.substring(next + 2, colon4);

  1912             String method = body.substring(colon4 + 2, sigBeg);

  1913             String params = body.substring(sigBeg, sigEnd + 1);

  1915             int paramBeg = body.indexOf('(', sigEnd + 1);

  1917             sb.append("vm.").append(pkgName.replace('/', '_')).append("_$JsCallbacks$(false)._VM().");

  1918             sb.append(mangleJsCallbacks(fqn, method, params, false));

  1919             sb.append("(").append(refId);

  1920             if (body.charAt(paramBeg + 1) != ')') {

  1921                 sb.append(",");

  1922             }

  1923             pos = paramBeg + 1;

  1924         }

  1925         sb = null;

  1926         pos = 0;

  1927         for (;;) {

  1928             int next = body.indexOf("@", pos);

  1929             if (next == -1) {

  1930                 if (sb == null) {

  1931                     return body;

  1932                 }

  1933                 sb.append(body.substring(pos));

  1934                 return sb;

  1935             }

  1936             if (sb == null) {

  1937                 sb = new StringBuilder();

  1938             }

  1940             sb.append(body.substring(pos, next));

  1942             int sigBeg = body.indexOf('(', next);

  1943             int sigEnd = body.indexOf(')', sigBeg);

  1944             int colon4 = body.indexOf("::", next);

  1945             if (sigBeg == -1 || sigEnd == -1 || colon4 == -1) {

  1946                 throw new IllegalStateException("Malformed body " + body);

  1947             }

  1948             String fqn = body.substring(next + 1, colon4);

  1949             String method = body.substring(colon4 + 2, sigBeg);

  1950             String params = body.substring(sigBeg, sigEnd + 1);

  1952             int paramBeg = body.indexOf('(', sigEnd + 1);

  1954             sb.append("vm.").append(pkgName.replace('/', '_')).append("_$JsCallbacks$(false)._VM().");

  1955             sb.append(mangleJsCallbacks(fqn, method, params, true));

  1956             sb.append("(");

  1957             pos = paramBeg + 1;

  1958         }

  1959     }

  1961     static String mangleJsCallbacks(String fqn, String method, String params, boolean isStatic) {

  1962         if (params.startsWith("(")) {

  1963             params = params.substring(1);

  1964         }

  1965         if (params.endsWith(")")) {

  1966             params = params.substring(0, params.length() - 1);

  1967         }

  1968         StringBuilder sb = new StringBuilder();

  1969         final String fqnu = fqn.replace('.', '_');

  1970         final String rfqn = mangleClassName(fqnu);

  1971         final String rm = mangleMethodName(method);

  1972         final String srp;

  1973         {

  1974             StringBuilder pb = new StringBuilder();

  1975             int len = params.length();

  1976             int indx = 0;

  1977             while (indx < len) {

  1978                 char ch = params.charAt(indx);

  1979                 if (ch == '[' || ch == 'L') {

  1980                     pb.append("Ljava/lang/Object;");

  1981                     indx = params.indexOf(';', indx) + 1;

  1982                 } else {

  1983                     pb.append(ch);

  1984                     indx++;

  1985                 }

  1986             }

  1987             srp = mangleSig(pb.toString());

  1988         }

  1989         final String rp = mangleSig(params);

  1990         final String mrp = mangleMethodName(rp);

  1991         sb.append(rfqn).append("$").append(rm).

  1992             append('$').append(mrp).append("__Ljava_lang_Object_2");

  1993         if (!isStatic) {

  1994             sb.append('L').append(fqnu).append("_2");

  1995         }

  1996         sb.append(srp);

  1997         return sb.toString();

  1998     }

  2000     private static String className(ClassData jc) {

  2001         //return jc.getName().getInternalName().replace('/', '_');

  2002         return mangleClassName(jc.getClassName());

  2003     }

  2005     private static String[] findAnnotation(

  2006         byte[] arr, ClassData cd, final String className,

  2007         final String... attrNames

  2008     ) throws IOException {

  2009         if (arr == null) {

  2010             return null;

  2011         }

  2012         final String[] values = new String[attrNames.length];

  2013         final boolean[] found = { false };

  2014         final String jvmType = "L" + className.replace('.', '/') + ";";

  2015         AnnotationParser ap = new AnnotationParser(false, true) {

  2016             @Override

  2017             protected void visitAttr(String type, String attr, String at, String value) {

  2018                 if (type.equals(jvmType)) {

  2019                     found[0] = true;

  2020                     for (int i = 0; i < attrNames.length; i++) {

  2021                         if (attrNames[i].equals(attr)) {

  2022                             values[i] = value;

  2023                         }

  2024                     }

  2025                 }

  2026             }

  2028         };

  2029         ap.parse(arr, cd);

  2030         return found[0] ? values : null;

  2031     }

  2033     private CharSequence initField(FieldData v) {

  2034         final String is = v.getInternalSig();

  2035         if (is.length() == 1) {

  2036             switch (is.charAt(0)) {

  2037                 case 'S':

  2038                 case 'J':

  2039                 case 'B':

  2040                 case 'Z':

  2041                 case 'C':

  2042                 case 'I': return " = 0;";

  2043                 case 'F':

  2044                 case 'D': return " = 0.0;";

  2045                 default:

  2046                     throw new IllegalStateException(is);

  2047             }

  2048         }

  2049         return " = null;";

  2050     }

  2052     private void generateAnno(ClassData cd, byte[] data) throws IOException {

  2053         AnnotationParser ap = new AnnotationParser(true, false) {

  2054             int[] cnt = new int[32];

  2055             int depth;

  2057             @Override

  2058             protected void visitAnnotationStart(String attrType, boolean top) throws IOException {

  2059                 final String slashType = attrType.substring(1, attrType.length() - 1);

  2060                 requireReference(slashType);

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

  2063                     append(",");

  2064                 }

  2065                 if (top) {

  2066                     append('"').append(attrType).append("\" : ");

  2067                 }

  2068                 append("{\n");

  2069                 cnt[++depth] = 0;

  2070             }

  2072             @Override

  2073             protected void visitAnnotationEnd(String type, boolean top) throws IOException {

  2074                 append("\n}\n");

  2075                 depth--;

  2076             }

  2078             @Override

  2079             protected void visitValueStart(String attrName, char type) throws IOException {

  2080                 if (cnt[depth]++ > 0) {

  2081                     append(",\n");

  2082                 }

  2083                 cnt[++depth] = 0;

  2084                 if (attrName != null) {

  2085                     append('"').append(attrName).append("\" : ");

  2086                 }

  2087                 if (type == '[') {

  2088                     append("[");

  2089                 }

  2090             }

  2092             @Override

  2093             protected void visitValueEnd(String attrName, char type) throws IOException {

  2094                 if (type == '[') {

  2095                     append("]");

  2096                 }

  2097                 depth--;

  2098             }

  2100             @Override

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

  2102             throws IOException {

  2103                 if (attr == null && value == null) {

  2104                     return;

  2105                 }

  2106                 append(value);

  2107             }

  2109             @Override

  2110             protected void visitEnumAttr(String type, String attr, String attrType, String value)

  2111             throws IOException {

  2112                 final String slashType = attrType.substring(1, attrType.length() - 1);

  2113                 requireReference(slashType);

  2115                 final String cn = mangleClassName(slashType);

  2116                 append(accessClass(cn))

  2117                    .append("(false)['valueOf__L").

  2118                     append(cn).

  2119                     append("_2Ljava_lang_String_2']('").

  2120                     append(value).

  2121                     append("')");

  2122             }

  2123         };

  2124         ap.parse(data, cd);

  2125     }

  2127     private static String outputArg(Appendable out, String[] args, int indx) throws IOException {

  2128         final String name = args[indx];

  2129         if (name == null) {

  2130             return "";

  2131         }

  2132         if (name.contains(",")) {

  2133             throw new IOException("Wrong parameter with ',': " + name);

  2134         }

  2135         out.append(name);

  2136         return ",";

  2137     }

  2139     final void emitNoFlush(

  2140         StackMapper sm,

  2141         final String format, final CharSequence... params

  2142     ) throws IOException {

  2143         emitImpl(this, format, params);

  2144     }

  2145     static final void emit(

  2146         StackMapper sm,

  2147         final Appendable out,

  2148         final String format, final CharSequence... params

  2149     ) throws IOException {

  2150         sm.flush(out);

  2151         emitImpl(out, format, params);

  2152     }

  2153     static void emitImpl(final Appendable out,

  2154                              final String format,

  2155                              final CharSequence... params) throws IOException {

  2156         final int length = format.length();

  2158         int processed = 0;

  2159         int paramOffset = format.indexOf('@');

  2160         while ((paramOffset != -1) && (paramOffset < (length - 1))) {

  2161             final char paramChar = format.charAt(paramOffset + 1);

  2162             if ((paramChar >= '1') && (paramChar <= '9')) {

  2163                 final int paramIndex = paramChar - '0' - 1;

  2165                 out.append(format, processed, paramOffset);

  2166                 out.append(params[paramIndex]);

  2168                 ++paramOffset;

  2169                 processed = paramOffset + 1;

  2170             }

  2172             paramOffset = format.indexOf('@', paramOffset + 1);

  2173         }

  2175         out.append(format, processed, length);

  2176     }

  2178     private void generateCatch(TrapData[] traps, int current, int topMostLabel) throws IOException {

  2179         append("} catch (e) {\n");

  2180         int finallyPC = -1;

  2181         for (TrapData e : traps) {

  2182             if (e == null) {

  2183                 break;

  2184             }

  2185             if (e.catch_cpx != 0) { //not finally

  2186                 final String classInternalName = jc.getClassName(e.catch_cpx);

  2187                 addReference(classInternalName);

  2188                 append("e = vm.java_lang_Class(false).bck2BrwsrThrwrbl(e);");

  2189                 append("if (e['$instOf_" + classInternalName.replace('/', '_') + "']) {");

  2190                 append("var stA0 = e;");

  2191                 goTo(this, current, e.handler_pc, topMostLabel);

  2192                 append("}\n");

  2193             } else {

  2194                 finallyPC = e.handler_pc;

  2195             }

  2196         }

  2197         if (finallyPC == -1) {

  2198             append("throw e;");

  2199         } else {

  2200             append("var stA0 = e;");

  2201             goTo(this, current, finallyPC, topMostLabel);

  2202         }

  2203         append("\n}");

  2204     }

  2206     private static void goTo(Appendable out, int current, int to, int canBack) throws IOException {

  2207         if (to < current) {

  2208             if (canBack < to) {

  2209                 out.append("{ gt = 0; continue X_" + to + "; }");

  2210             } else {

  2211                 out.append("{ gt = " + to + "; continue X_0; }");

  2212             }

  2213         } else {

  2214             out.append("{ gt = " + to + "; break IF; }");

  2215         }

  2216     }

  2218     private static void emitIf(

  2219         StackMapper sm,

  2220         Appendable out, String pattern,

  2221         CharSequence param,

  2222         int current, int to, int canBack

  2223     ) throws IOException {

  2224         sm.flush(out);

  2225         emitImpl(out, pattern, param);

  2226         goTo(out, current, to, canBack);

  2227     }

  2229     private void generateNewArray(int atype, final StackMapper smapper) throws IOException, IllegalStateException {

  2230         String jvmType;

  2231         switch (atype) {

  2232             case 4: jvmType = "[Z"; break;

  2233             case 5: jvmType = "[C"; break;

  2234             case 6: jvmType = "[F"; break;

  2235             case 7: jvmType = "[D"; break;

  2236             case 8: jvmType = "[B"; break;

  2237             case 9: jvmType = "[S"; break;

  2238             case 10: jvmType = "[I"; break;

  2239             case 11: jvmType = "[J"; break;

  2240             default: throw new IllegalStateException("Array type: " + atype);

  2241         }

  2242         emit(smapper, this,

  2243             "var @2 = Array.prototype['newArray__Ljava_lang_Object_2ZLjava_lang_String_2Ljava_lang_Object_2I'](true, '@3', null, @1);",

  2244              smapper.popI(), smapper.pushA(), jvmType);

  2245     }

  2247     private void generateANewArray(int type, final StackMapper smapper) throws IOException {

  2248         String typeName = jc.getClassName(type);

  2249         String ref = "null";

  2250         if (typeName.startsWith("[")) {

  2251             typeName = "'[" + typeName + "'";

  2252         } else {

  2253             ref = "vm." + mangleClassName(typeName);

  2254             typeName = "'[L" + typeName + ";'";

  2255         }

  2256         emit(smapper, this,

  2257             "var @2 = Array.prototype['newArray__Ljava_lang_Object_2ZLjava_lang_String_2Ljava_lang_Object_2I'](false, @3, @4, @1);",

  2258              smapper.popI(), smapper.pushA(), typeName, ref);

  2259     }

  2261     private int generateMultiANewArray(int type, final byte[] byteCodes, int i, final StackMapper smapper) throws IOException {

  2262         String typeName = jc.getClassName(type);

  2263         int dim = readUByte(byteCodes, ++i);

  2264         StringBuilder dims = new StringBuilder();

  2265         dims.append('[');

  2266         for (int d = 0; d < dim; d++) {

  2267             if (d != 0) {

  2268                 dims.insert(1, ",");

  2269             }

  2270             dims.insert(1, smapper.popI());

  2271         }

  2272         dims.append(']');

  2273         String fn = "null";

  2274         if (typeName.charAt(dim) == 'L') {

  2275             fn = "vm." + mangleClassName(typeName.substring(dim + 1, typeName.length() - 1));

  2276         }

  2277         emit(smapper, this,

  2278             "var @2 = Array.prototype['multiNewArray__Ljava_lang_Object_2Ljava_lang_String_2_3ILjava_lang_Object_2']('@3', @1, @4);",

  2279              dims.toString(), smapper.pushA(), typeName, fn

  2280         );

  2281         return i;

  2282     }

  2284     private int generateTableSwitch(int i, final byte[] byteCodes, final StackMapper smapper, int topMostLabel) throws IOException {

  2285         int table = i / 4 * 4 + 4;

  2286         int dflt = i + readInt4(byteCodes, table);

  2287         table += 4;

  2288         int low = readInt4(byteCodes, table);

  2289         table += 4;

  2290         int high = readInt4(byteCodes, table);

  2291         table += 4;

  2292         final CharSequence swVar = smapper.popValue();

  2293         smapper.flush(this);

  2294         append("switch (").append(swVar).append(") {\n");

  2295         while (low <= high) {

  2296             int offset = i + readInt4(byteCodes, table);

  2297             table += 4;

  2298             append("  case " + low).append(":"); goTo(this, i, offset, topMostLabel); append('\n');

  2299             low++;

  2300         }

  2301         append("  default: ");

  2302         goTo(this, i, dflt, topMostLabel);

  2303         append("\n}");

  2304         i = table - 1;

  2305         return i;

  2306     }

  2308     private int generateLookupSwitch(int i, final byte[] byteCodes, final StackMapper smapper, int topMostLabel) throws IOException {

  2309         int table = i / 4 * 4 + 4;

  2310         int dflt = i + readInt4(byteCodes, table);

  2311         table += 4;

  2312         int n = readInt4(byteCodes, table);

  2313         table += 4;

  2314         final CharSequence swVar = smapper.popValue();

  2315         smapper.flush(this);

  2316         append("switch (").append(swVar).append(") {\n");

  2317         while (n-- > 0) {

  2318             int cnstnt = readInt4(byteCodes, table);

  2319             table += 4;

  2320             int offset = i + readInt4(byteCodes, table);

  2321             table += 4;

  2322             append("  case " + cnstnt).append(": "); goTo(this, i, offset, topMostLabel); append('\n');

  2323         }

  2324         append("  default: ");

  2325         goTo(this, i, dflt, topMostLabel);

  2326         append("\n}");

  2327         i = table - 1;

  2328         return i;

  2329     }

  2331     private void generateInstanceOf(int indx, final StackMapper smapper) throws IOException {

  2332         String type = jc.getClassName(indx);

  2333         if (!type.startsWith("[")) {

  2334             emit(smapper, this,

  2335                     "var @2 = @1 != null && @1['$instOf_@3'] ? 1 : 0;",

  2336                  smapper.popA(), smapper.pushI(),

  2337                  type.replace('/', '_'));

  2338         } else {

  2339             int cnt = 0;

  2340             while (type.charAt(cnt) == '[') {

  2341                 cnt++;

  2342             }

  2343             if (type.charAt(cnt) == 'L') {

  2344                 type = "vm." + mangleClassName(type.substring(cnt + 1, type.length() - 1));

  2345                 emit(smapper, this,

  2346                     "var @2 = Array.prototype['isInstance__ZLjava_lang_Object_2ILjava_lang_Object_2'](@1, @4, @3);",

  2347                     smapper.popA(), smapper.pushI(),

  2348                     type, "" + cnt

  2349                 );

  2350             } else {

  2351                 emit(smapper, this,

  2352                     "var @2 = Array.prototype['isInstance__ZLjava_lang_Object_2Ljava_lang_String_2'](@1, '@3');",

  2353                     smapper.popA(), smapper.pushI(), type

  2354                 );

  2355             }

  2356         }

  2357     }

  2359     private void generateCheckcast(int indx, final StackMapper smapper) throws IOException {

  2360         String type = jc.getClassName(indx);

  2361         if (!type.startsWith("[")) {

  2362             emitNoFlush(smapper,

  2363                  "if (@1 !== null && !@1['$instOf_@2']) throw vm.java_lang_ClassCastException(true);",

  2364                  smapper.getT(0, VarType.REFERENCE, false), type.replace('/', '_'));

  2365         } else {

  2366             int cnt = 0;

  2367             while (type.charAt(cnt) == '[') {

  2368                 cnt++;

  2369             }

  2370             if (type.charAt(cnt) == 'L') {

  2371                 type = "vm." + mangleClassName(type.substring(cnt + 1, type.length() - 1));

  2372                 emitNoFlush(smapper,

  2373                     "if (@1 !== null && !Array.prototype['isInstance__ZLjava_lang_Object_2ILjava_lang_Object_2'](@1, @3, @2)) throw vm.java_lang_ClassCastException(true);",

  2374                      smapper.getT(0, VarType.REFERENCE, false), type, "" + cnt

  2375                 );

  2376             } else {

  2377                 emitNoFlush(smapper,

  2378                     "if (@1 !== null && !Array.prototype['isInstance__ZLjava_lang_Object_2Ljava_lang_String_2'](@1, '@2')) throw vm.java_lang_ClassCastException(true);",

  2379                      smapper.getT(0, VarType.REFERENCE, false), type

  2380                 );

  2381             }

  2382         }

  2383     }

  2385     private void generateByteCodeComment(int prev, int i, final byte[] byteCodes) throws IOException {

  2386         for (int j = prev; j <= i; j++) {

  2387             append(" ");

  2388             final int cc = readUByte(byteCodes, j);

  2389             append(Integer.toString(cc));

  2390         }

  2391     }

  2393     @JavaScriptBody(args = "msg", body = "")

  2394     private static void println(String msg) {

  2395         System.err.println(msg);

  2396     }

  2397 }

author	Jaroslav Tulach <jaroslav.tulach@apidesign.org>
	Sun, 23 Nov 2014 17:05:32 +0100
changeset 1725	489fe829817f
parent 1722	fd3a354d6e8f
child 1727	86e61729f754
permissions	-rw-r--r--