hg/bck2brwsr: rt/vm/src/main/java/org/apidesign/vm4brwsr/ByteCodeToJavaScript.java@2e69145b9feb

     1 /**

     2  * Back 2 Browser Bytecode Translator

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

     4  *

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

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

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

     8  *

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

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

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

    12  * GNU General Public License for more details.

    13  *

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

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

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

    17  */

    18 package org.apidesign.vm4brwsr;

    20 import java.io.IOException;

    21 import java.io.InputStream;

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

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

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

    26  *

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

    28  */

    29 abstract class ByteCodeToJavaScript implements Appendable {

    30     private ClassData jc;

    31     private final Appendable out;

    32     private boolean outChanged;

    33     private boolean callbacks;

    35     protected ByteCodeToJavaScript(Appendable out) {

    36         this.out = out;

    37     }

    39     @Override

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

    41         out.append(csq);

    42         outChanged = true;

    43         return this;

    44     }

    46     @Override

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

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

    49         outChanged = true;

    50         return this;

    51     }

    53     @Override

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

    55         out.append(c);

    56         outChanged = true;

    57         return this;

    58     }

    60     /* Collects additional required resources.

    61      *

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

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

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

    65      */

    66     protected abstract boolean requireReference(String internalClassName);

    68     /*

    69      * @param resourcePath name of resources to read

    70      */

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

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

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

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

    76      *

    77      * @param className suggested name of the class

    78      */

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

    80         return className + " = ";

    81     }

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

    83         return classOperation;

    84     }

    86     protected String accessField(String object, String mangledName,

    87                                  String[] fieldInfoName) throws IOException {

    88         return object + "." + mangledName;

    89     }

    91     protected String accessStaticMethod(

    92                              String object,

    93                              String mangledName,

    94                              String[] fieldInfoName) throws IOException {

    95         return object + "." + mangledName;

    96     }

    98     protected String accessVirtualMethod(

    99             String object,

   100             String mangledName,

   101             String[] fieldInfoName,

   102             int params

   103     ) throws IOException {

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

   105     }

   107     protected void declaredClass(ClassData classData, String mangledName)

   108             throws IOException {

   109     }

   111     protected void declaredField(FieldData fieldData,

   112                                  String destObject,

   113                                  String mangledName) throws IOException {

   114     }

   116     protected void declaredMethod(MethodData methodData,

   117                                   String destObject,

   118                                   String mangledName) throws IOException {

   119     }

   121     /** Prints out a debug message.

   122      *

   123      * @param msg the message

   124      * @return true if the message has been printed

   125      * @throws IOException

   126      */

   127     boolean debug(String msg) throws IOException {

   128         append(msg);

   129         return true;

   130     }

   132     /**

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

   134      *

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

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

   137      *

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

   139      */

   141     public String compile(InputStream classFile) throws IOException {

   142         return compile(new ClassData(classFile));

   143     }

   145     protected String compile(ClassData classData) throws IOException {

   146         this.jc = classData;

   147         this.callbacks = this.jc.getClassName().endsWith("/$JsCallbacks$");

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

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

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

   151             );

   152         }

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

   154         {

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

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

   157                 "resource", "processByteCode"

   158             );

   159             if (arr != null) {

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

   161                     requireScript(arr[0]);

   162                 }

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

   164                     return null;

   165                 }

   166             }

   167         }

   168         {

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

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

   171                 "value"

   172             );

   173             if (arr != null) {

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

   175                     requireScript(arr[0]);

   176                 } else {

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

   178                     requireScript(

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

   180                     );

   181                 }

   182             }

   183         }

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

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

   186             "container", "prototype"

   187         );

   188         StringArray toInitilize = new StringArray();

   189         final String className = className(jc);

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

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

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

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

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

   195         if (proto == null) {

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

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

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

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

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

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

   202         } else {

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

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

   205                 proto[0] = "p";

   206             }

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

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

   209         }

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

   211             if (v.isStatic()) {

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

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

   214                         continue;

   215                     }

   216                 }

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

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

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

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

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

   222             } else {

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

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

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

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

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

   228                    .append("; };");

   229             }

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

   232         }

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

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

   235             if (javaScriptOnly(onlyArr)) continue;

   236             String destObject;

   237             String mn;

   238             append("\n    ");

   239             if (m.isStatic()) {

   240                 destObject = "c";

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

   242             } else {

   243                 if (m.isConstructor()) {

   244                     destObject = "CLS";

   245                     mn = generateInstanceMethod(destObject, m);

   246                 } else {

   247                     destObject = "c";

   248                     mn = generateInstanceMethod(destObject, m);

   249                 }

   250             }

   251             declaredMethod(m, destObject, mn);

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

   253             if (runAnno != null) {

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

   255                 generateAnno(jc, runAnno);

   256                 append("\n    };");

   257             }

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

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

   260         }

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

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

   263         String instOfName = "$instOf_" + className;

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

   265         if (jc.isInterface()) {

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

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

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

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

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

   271                     append("\n        try {");

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

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

   274                     append("\n        }");

   275                 }

   276             }

   277         }

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

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

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

   281             requireReference(superInterface);

   282         }

   283         append("\n    }");

   284         append("\n    try {");

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

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

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

   288         append("\n    }");

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

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

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

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

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

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

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

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

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

   298         if (classAnno != null) {

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

   300             generateAnno(jc, classAnno);

   301             append("\n    };");

   302         }

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

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

   305         }

   306         append("\n  }");

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

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

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

   310         append("\n    }");

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

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

   313             if (javaScriptOnly(onlyArr)) continue;

   314             if (!v.isStatic()) {

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

   316                     append(className).append('_').

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

   318             }

   319         }

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

   321         append("\n  }");

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

   323         append("\n};");

   325         declaredClass(jc, className);

   327 //        StringBuilder sb = new StringBuilder();

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

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

   330 //        }

   331         return "";

   332     }

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

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

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

   337             "name", "value"

   338         );

   339         if (only != null) {

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

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

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

   343             }

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

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

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

   347             }

   348             return true;

   349         }

   350         return false;

   351     }

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

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

   354         if (jsb != null) {

   355             return jsb;

   356         }

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

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

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

   360         }

   361         generateMethod(destObject, mn, m);

   362         return mn;

   363     }

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

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

   367         if (jsb != null) {

   368             return jsb;

   369         }

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

   371         generateMethod(destObject, mn, m);

   372         return mn;

   373     }

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

   376             throws IOException {

   377         final StackMapIterator stackMapIterator = m.createStackMapIterator();

   378         TrapDataIterator trap = m.getTrapDataIterator();

   379         final LocalsMapper lmapper =

   380                 new LocalsMapper(stackMapIterator.getArguments());

   382         boolean defineProp =

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

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

   386         if (defineProp) {

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

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

   389         } else {

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

   391         }

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

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

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

   396         if (byteCodes == null) {

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

   398                .append(jc.getClassName()).append('.')

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

   400             if (defineProp) {

   401                 append("}});");

   402             } else {

   403                 append("};");

   404             }

   405             return;

   406         }

   408         final StackMapper smapper = new StackMapper();

   410         if (!m.isStatic()) {

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

   412         }

   414         int lastStackFrame;

   415         TrapData[] previousTrap = null;

   416         boolean wide = false;

   417         boolean didBranches;

   418         if (stackMapIterator.isEmpty()) {

   419             didBranches = false;

   420             lastStackFrame = 0;

   421         } else {

   422             didBranches = true;

   423             lastStackFrame = -1;

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

   425         }

   427         int openBraces = 0;

   428         int topMostLabel = 0;

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

   430             int prev = i;

   431             outChanged = false;

   432             stackMapIterator.advanceTo(i);

   433             boolean changeInCatch = trap.advanceTo(i);

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

   435                 if (previousTrap != null) {

   436                     generateCatch(previousTrap, i, topMostLabel);

   437                     previousTrap = null;

   438                 }

   439             }

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

   441                 smapper.flush(this);

   442                 if (i != 0) {

   443                     append("    }\n");

   444                 }

   445                 if (openBraces > 64) {

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

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

   448                     }

   449                     openBraces = 1;

   450                     topMostLabel = i;

   451                 }

   453                 lastStackFrame = stackMapIterator.getFrameIndex();

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

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

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

   457                 openBraces++;

   458                 changeInCatch = true;

   459             } else {

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

   461             }

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

   463                 append("try {");

   464                 previousTrap = trap.current();

   465             }

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

   467             switch (c) {

   468                 case opc_aload_0:

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

   470                     break;

   471                 case opc_iload_0:

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

   473                     break;

   474                 case opc_lload_0:

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

   476                     break;

   477                 case opc_fload_0:

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

   479                     break;

   480                 case opc_dload_0:

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

   482                     break;

   483                 case opc_aload_1:

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

   485                     break;

   486                 case opc_iload_1:

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

   488                     break;

   489                 case opc_lload_1:

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

   491                     break;

   492                 case opc_fload_1:

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

   494                     break;

   495                 case opc_dload_1:

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

   497                     break;

   498                 case opc_aload_2:

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

   500                     break;

   501                 case opc_iload_2:

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

   503                     break;

   504                 case opc_lload_2:

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

   506                     break;

   507                 case opc_fload_2:

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

   509                     break;

   510                 case opc_dload_2:

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

   512                     break;

   513                 case opc_aload_3:

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

   515                     break;

   516                 case opc_iload_3:

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

   518                     break;

   519                 case opc_lload_3:

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

   521                     break;

   522                 case opc_fload_3:

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

   524                     break;

   525                 case opc_dload_3:

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

   527                     break;

   528                 case opc_iload: {

   529                     ++i;

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

   531                                           : readUByte(byteCodes, i);

   532                     wide = false;

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

   534                     break;

   535                 }

   536                 case opc_lload: {

   537                     ++i;

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

   539                                           : readUByte(byteCodes, i);

   540                     wide = false;

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

   542                     break;

   543                 }

   544                 case opc_fload: {

   545                     ++i;

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

   547                                           : readUByte(byteCodes, i);

   548                     wide = false;

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

   550                     break;

   551                 }

   552                 case opc_dload: {

   553                     ++i;

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

   555                                           : readUByte(byteCodes, i);

   556                     wide = false;

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

   558                     break;

   559                 }

   560                 case opc_aload: {

   561                     ++i;

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

   563                                           : readUByte(byteCodes, i);

   564                     wide = false;

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

   566                     break;

   567                 }

   568                 case opc_istore: {

   569                     ++i;

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

   571                                           : readUByte(byteCodes, i);

   572                     wide = false;

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

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

   575                     break;

   576                 }

   577                 case opc_lstore: {

   578                     ++i;

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

   580                                           : readUByte(byteCodes, i);

   581                     wide = false;

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

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

   584                     break;

   585                 }

   586                 case opc_fstore: {

   587                     ++i;

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

   589                                           : readUByte(byteCodes, i);

   590                     wide = false;

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

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

   593                     break;

   594                 }

   595                 case opc_dstore: {

   596                     ++i;

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

   598                                           : readUByte(byteCodes, i);

   599                     wide = false;

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

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

   602                     break;

   603                 }

   604                 case opc_astore: {

   605                     ++i;

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

   607                                           : readUByte(byteCodes, i);

   608                     wide = false;

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

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

   611                     break;

   612                 }

   613                 case opc_astore_0:

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

   615                     break;

   616                 case opc_istore_0:

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

   618                     break;

   619                 case opc_lstore_0:

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

   621                     break;

   622                 case opc_fstore_0:

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

   624                     break;

   625                 case opc_dstore_0:

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

   627                     break;

   628                 case opc_astore_1:

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

   630                     break;

   631                 case opc_istore_1:

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

   633                     break;

   634                 case opc_lstore_1:

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

   636                     break;

   637                 case opc_fstore_1:

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

   639                     break;

   640                 case opc_dstore_1:

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

   642                     break;

   643                 case opc_astore_2:

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

   645                     break;

   646                 case opc_istore_2:

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

   648                     break;

   649                 case opc_lstore_2:

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

   651                     break;

   652                 case opc_fstore_2:

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

   654                     break;

   655                 case opc_dstore_2:

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

   657                     break;

   658                 case opc_astore_3:

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

   660                     break;

   661                 case opc_istore_3:

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

   663                     break;

   664                 case opc_lstore_3:

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

   666                     break;

   667                 case opc_fstore_3:

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

   669                     break;

   670                 case opc_dstore_3:

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

   672                     break;

   673                 case opc_iadd:

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

   675                     break;

   676                 case opc_ladd:

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

   678                     break;

   679                 case opc_fadd:

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

   681                     break;

   682                 case opc_dadd:

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

   684                     break;

   685                 case opc_isub:

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

   687                     break;

   688                 case opc_lsub:

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

   690                     break;

   691                 case opc_fsub:

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

   693                     break;

   694                 case opc_dsub:

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

   696                     break;

   697                 case opc_imul:

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

   699                     break;

   700                 case opc_lmul:

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

   702                     break;

   703                 case opc_fmul:

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

   705                     break;

   706                 case opc_dmul:

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

   708                     break;

   709                 case opc_idiv:

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

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

   712                     break;

   713                 case opc_ldiv:

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

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

   716                     break;

   717                 case opc_fdiv:

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

   719                     break;

   720                 case opc_ddiv:

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

   722                     break;

   723                 case opc_irem:

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

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

   726                     break;

   727                 case opc_lrem:

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

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

   730                     break;

   731                 case opc_frem:

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

   733                     break;

   734                 case opc_drem:

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

   736                     break;

   737                 case opc_iand:

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

   739                     break;

   740                 case opc_land:

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

   742                     break;

   743                 case opc_ior:

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

   745                     break;

   746                 case opc_lor:

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

   748                     break;

   749                 case opc_ixor:

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

   751                     break;

   752                 case opc_lxor:

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

   754                     break;

   755                 case opc_ineg:

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

   757                     break;

   758                 case opc_lneg:

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

   760                     break;

   761                 case opc_fneg:

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

   763                     break;

   764                 case opc_dneg:

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

   766                     break;

   767                 case opc_ishl:

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

   769                     break;

   770                 case opc_lshl:

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

   772                     break;

   773                 case opc_ishr:

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

   775                     break;

   776                 case opc_lshr:

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

   778                     break;

   779                 case opc_iushr:

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

   781                     break;

   782                 case opc_lushr:

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

   784                     break;

   785                 case opc_iinc: {

   786                     ++i;

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

   788                                              : readUByte(byteCodes, i);

   789                     ++i;

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

   791                                             : byteCodes[i];

   792                     wide = false;

   793                     if (incrBy == 1) {

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

   795                     } else {

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

   797                              lmapper.getI(varIndx),

   798                              Integer.toString(incrBy));

   799                     }

   800                     break;

   801                 }

   802                 case opc_return:

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

   804                     break;

   805                 case opc_ireturn:

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

   807                     break;

   808                 case opc_lreturn:

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

   810                     break;

   811                 case opc_freturn:

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

   813                     break;

   814                 case opc_dreturn:

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

   816                     break;

   817                 case opc_areturn:

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

   819                     break;

   820                 case opc_i2l:

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

   822                     break;

   823                 case opc_i2f:

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

   825                     break;

   826                 case opc_i2d:

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

   828                     break;

   829                 case opc_l2i:

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

   831                     break;

   832                     // max int check?

   833                 case opc_l2f:

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

   835                     break;

   836                 case opc_l2d:

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

   838                     break;

   839                 case opc_f2d:

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

   841                          smapper.getF(0));

   842                     break;

   843                 case opc_d2f:

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

   845                          smapper.getD(0));

   846                     break;

   847                 case opc_f2i:

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

   849                          smapper.getF(0));

   850                     break;

   851                 case opc_f2l:

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

   853                          smapper.getF(0));

   854                     break;

   855                 case opc_d2i:

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

   857                          smapper.getD(0));

   858                     break;

   859                 case opc_d2l:

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

   861                     break;

   862                 case opc_i2b:

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

   864                     break;

   865                 case opc_i2c:

   866                 case opc_i2s:

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

   868                     break;

   869                 case opc_aconst_null:

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

   871                     break;

   872                 case opc_iconst_m1:

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

   874                     break;

   875                 case opc_iconst_0:

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

   877                     break;

   878                 case opc_dconst_0:

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

   880                     break;

   881                 case opc_lconst_0:

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

   883                     break;

   884                 case opc_fconst_0:

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

   886                     break;

   887                 case opc_iconst_1:

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

   889                     break;

   890                 case opc_lconst_1:

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

   892                     break;

   893                 case opc_fconst_1:

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

   895                     break;

   896                 case opc_dconst_1:

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

   898                     break;

   899                 case opc_iconst_2:

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

   901                     break;

   902                 case opc_fconst_2:

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

   904                     break;

   905                 case opc_iconst_3:

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

   907                     break;

   908                 case opc_iconst_4:

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

   910                     break;

   911                 case opc_iconst_5:

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

   913                     break;

   914                 case opc_ldc: {

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

   916                     String v = encodeConstant(indx);

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

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

   919                     break;

   920                 }

   921                 case opc_ldc_w:

   922                 case opc_ldc2_w: {

   923                     int indx = readUShortArg(byteCodes, i);

   924                     i += 2;

   925                     String v = encodeConstant(indx);

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

   927                     if (type == VarType.LONG) {

   928                         final Long lv = new Long(v);

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

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

   931                         if (hi == 0) {

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

   933                         } else {

   934                             smapper.assign(this, VarType.LONG,

   935                                 "0x" + Integer.toHexString(hi) + ".next32(0x" +

   936                                     Integer.toHexString(low) + ")"

   937                             );

   938                         }

   939                     } else {

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

   941                     }

   942                     break;

   943                 }

   944                 case opc_lcmp:

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

   946                     break;

   947                 case opc_fcmpl:

   948                 case opc_fcmpg:

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

   950                     break;

   951                 case opc_dcmpl:

   952                 case opc_dcmpg:

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

   954                     break;

   955                 case opc_if_acmpeq:

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

   957                                    "===", topMostLabel);

   958                     break;

   959                 case opc_if_acmpne:

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

   961                                    "!==", topMostLabel);

   962                     break;

   963                 case opc_if_icmpeq:

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

   965                                    "==", topMostLabel);

   966                     break;

   967                 case opc_ifeq: {

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

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

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

   971                     i += 2;

   972                     break;

   973                 }

   974                 case opc_ifne: {

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

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

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

   978                     i += 2;

   979                     break;

   980                 }

   981                 case opc_iflt: {

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

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

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

   985                     i += 2;

   986                     break;

   987                 }

   988                 case opc_ifle: {

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

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

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

   992                     i += 2;

   993                     break;

   994                 }

   995                 case opc_ifgt: {

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

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

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

   999                     i += 2;

  1000                     break;

  1001                 }

  1002                 case opc_ifge: {

  1003                     int indx = i + readShortArg(byteCodes, i);

  1004                     emitIf(smapper, this, "if ((@1) >= 0) ",

  1005                          smapper.popI(), i, indx, topMostLabel);

  1006                     i += 2;

  1007                     break;

  1008                 }

  1009                 case opc_ifnonnull: {

  1010                     int indx = i + readShortArg(byteCodes, i);

  1011                     emitIf(smapper, this, "if ((@1) !== null) ",

  1012                          smapper.popA(), i, indx, topMostLabel);

  1013                     i += 2;

  1014                     break;

  1015                 }

  1016                 case opc_ifnull: {

  1017                     int indx = i + readShortArg(byteCodes, i);

  1018                     emitIf(smapper, this, "if ((@1) === null) ",

  1019                          smapper.popA(), i, indx, topMostLabel);

  1020                     i += 2;

  1021                     break;

  1022                 }

  1023                 case opc_if_icmpne:

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

  1025                                    "!=", topMostLabel);

  1026                     break;

  1027                 case opc_if_icmplt:

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

  1029                                    "<", topMostLabel);

  1030                     break;

  1031                 case opc_if_icmple:

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

  1033                                    "<=", topMostLabel);

  1034                     break;

  1035                 case opc_if_icmpgt:

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

  1037                                    ">", topMostLabel);

  1038                     break;

  1039                 case opc_if_icmpge:

  1040                     i = generateIf(smapper, byteCodes, i, smapper.popI(), smapper.popI(),

  1041                                    ">=", topMostLabel);

  1042                     break;

  1043                 case opc_goto: {

  1044                     smapper.flush(this);

  1045                     int indx = i + readShortArg(byteCodes, i);

  1046                     goTo(this, i, indx, topMostLabel);

  1047                     i += 2;

  1048                     break;

  1049                 }

  1050                 case opc_lookupswitch: {

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

  1052                     break;

  1053                 }

  1054                 case opc_tableswitch: {

  1055                     i = generateTableSwitch(i, byteCodes, smapper, topMostLabel);

  1056                     break;

  1057                 }

  1058                 case opc_invokeinterface: {

  1059                     i = invokeVirtualMethod(byteCodes, i, smapper) + 2;

  1060                     break;

  1061                 }

  1062                 case opc_invokevirtual:

  1063                     i = invokeVirtualMethod(byteCodes, i, smapper);

  1064                     break;

  1065                 case opc_invokespecial:

  1066                     i = invokeStaticMethod(byteCodes, i, smapper, false);

  1067                     break;

  1068                 case opc_invokestatic:

  1069                     i = invokeStaticMethod(byteCodes, i, smapper, true);

  1070                     break;

  1071                 case opc_invokedynamic: {

  1072                     int indx = readUShortArg(byteCodes, i);

  1073                     println("invoke dynamic: " + indx);

  1074                     ByteCodeParser.CPX2 c2 = jc.getCpoolEntry(indx);

  1075                     BootMethodData bm = jc.getBootMethod(c2.cpx1);

  1076                     CPX2 methodHandle = jc.getCpoolEntry(bm.method);

  1077                     println("  type: " + methodHandle.cpx1);

  1078                     String[] mi = jc.getFieldInfoName(methodHandle.cpx2);

  1079                     String mcn = mangleClassName(mi[0]);

  1080                     char[] returnType = {'V'};

  1081                     StringBuilder cnt = new StringBuilder();

  1082                     String mn = findMethodName(mi, cnt, returnType);

  1083                     StringBuilder sb = new StringBuilder();

  1084                     sb.append("We don't handle invokedynamic, need to preprocess ahead-of-time:\n");

  1085                     sb.append("  mi[0]: ").append(mi[0]).append("\n");

  1086                     sb.append("  mi[1]: ").append(mi[1]).append("\n");

  1087                     sb.append("  mi[2]: ").append(mi[2]).append("\n");

  1088                     sb.append("  mn   : ").append(mn).append("\n");

  1089                     sb.append("  name and type: ").append(jc.stringValue(c2.cpx2, true)).append("\n");

  1090                     throw new IOException(sb.toString());

  1091                     /*

  1092                     CPX2 nameAndType = jc.getCpoolEntry(c2.cpx2);

  1093                     String type = jc.StringValue(nameAndType.cpx2);

  1094                     String object = accessClass(mcn) + "(false)";

  1095                     if (mn.startsWith("cons_")) {

  1096                         object += ".constructor";

  1097                     }

  1098                     append("var metHan = ");

  1099                     append(accessStaticMethod(object, mn, mi));

  1100                     append('(');

  1101                     String lookup = accessClass("java_lang_invoke_MethodHandles") + "(false).findFor__Ljava_lang_invoke_MethodHandles$Lookup_2Ljava_lang_Class_2(CLS.$class)";

  1102                     append(lookup);

  1103                     append(", '").append(mi[1]).append("', ");

  1104                     String methodType = accessClass("java_lang_invoke_MethodType") + "(false).fromMethodDescriptorString__Ljava_lang_invoke_MethodType_2Ljava_lang_String_2Ljava_lang_ClassLoader_2(";

  1105                     append(methodType).append("'").append(type).append("', null)");

  1106 //                    if (numArguments > 0) {

  1107 //                        append(vars[0]);

  1108 //                        for (int j = 1; j < numArguments; ++j) {

  1109 //                            append(", ");

  1110 //                            append(vars[j]);

  1111 //                        }

  1112 //                    }

  1113                     append(");");

  1114                     emit(smapper, this, "throw 'Invoke dynamic: ' + @1 + ': ' + metHan;", "" + indx);

  1115                     i += 4;

  1116                     break;

  1117                     */

  1118                 }

  1119                 case opc_new: {

  1120                     int indx = readUShortArg(byteCodes, i);

  1121                     String ci = jc.getClassName(indx);

  1122                     emit(smapper, this, "var @1 = new @2;",

  1123                          smapper.pushA(), accessClass(mangleClassName(ci)));

  1124                     addReference(ci);

  1125                     i += 2;

  1126                     break;

  1127                 }

  1128                 case opc_newarray:

  1129                     int atype = readUByte(byteCodes, ++i);

  1130                     generateNewArray(atype, smapper);

  1131                     break;

  1132                 case opc_anewarray: {

  1133                     int type = readUShortArg(byteCodes, i);

  1134                     i += 2;

  1135                     generateANewArray(type, smapper);

  1136                     break;

  1137                 }

  1138                 case opc_multianewarray: {

  1139                     int type = readUShortArg(byteCodes, i);

  1140                     i += 2;

  1141                     i = generateMultiANewArray(type, byteCodes, i, smapper);

  1142                     break;

  1143                 }

  1144                 case opc_arraylength:

  1145                     smapper.replace(this, VarType.INTEGER, "(@1).length", smapper.getA(0));

  1146                     break;

  1147                 case opc_lastore:

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

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

  1150                     break;

  1151                 case opc_fastore:

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

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

  1154                     break;

  1155                 case opc_dastore:

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

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

  1158                     break;

  1159                 case opc_aastore:

  1160                     emit(smapper, this, "Array.at(@3, @2, @1);",

  1161                          smapper.popA(), smapper.popI(), smapper.popA());

  1162                     break;

  1163                 case opc_iastore:

  1164                 case opc_bastore:

  1165                 case opc_castore:

  1166                 case opc_sastore:

  1167                     emit(smapper, this, "Array.at(@3, @2, @1);",

  1168                          smapper.popI(), smapper.popI(), smapper.popA());

  1169                     break;

  1170                 case opc_laload:

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

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

  1173                     break;

  1174                 case opc_faload:

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

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

  1177                     break;

  1178                 case opc_daload:

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

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

  1181                     break;

  1182                 case opc_aaload:

  1183                     smapper.replace(this, VarType.REFERENCE, "Array.at(@2, @1)",

  1184                          smapper.popI(), smapper.getA(0));

  1185                     break;

  1186                 case opc_iaload:

  1187                 case opc_baload:

  1188                 case opc_caload:

  1189                 case opc_saload:

  1190                     smapper.replace(this, VarType.INTEGER, "Array.at(@2, @1)",

  1191                          smapper.popI(), smapper.getA(0));

  1192                     break;

  1193                 case opc_pop:

  1194                 case opc_pop2:

  1195                     smapper.pop(1);

  1196                     debug("/* pop */");

  1197                     break;

  1198                 case opc_dup: {

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

  1200                     if (smapper.isDirty()) {

  1201                         emit(smapper, this, "var @1 = @2;", smapper.pushT(v.getType()), v);

  1202                     } else {

  1203                         smapper.assign(this, v.getType(), v);

  1204                     }

  1205                     break;

  1206                 }

  1207                 case opc_dup2: {

  1208                     final Variable vi1 = smapper.get(0);

  1210                     if (vi1.isCategory2()) {

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

  1212                              smapper.pushT(vi1.getType()), vi1);

  1213                     } else {

  1214                         final Variable vi2 = smapper.get(1);

  1215                         emit(smapper, this, "var @1 = @2, @3 = @4;",

  1216                              smapper.pushT(vi2.getType()), vi2,

  1217                              smapper.pushT(vi1.getType()), vi1);

  1218                     }

  1219                     break;

  1220                 }

  1221                 case opc_dup_x1: {

  1222                     final Variable vi1 = smapper.pop(this);

  1223                     final Variable vi2 = smapper.pop(this);

  1224                     final Variable vo3 = smapper.pushT(vi1.getType());

  1225                     final Variable vo2 = smapper.pushT(vi2.getType());

  1226                     final Variable vo1 = smapper.pushT(vi1.getType());

  1228                     emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6;",

  1229                          vo1, vi1, vo2, vi2, vo3, vo1);

  1230                     break;

  1231                 }

  1232                 case opc_dup2_x1: {

  1233                     final Variable vi1 = smapper.pop(this);

  1234                     final Variable vi2 = smapper.pop(this);

  1236                     if (vi1.isCategory2()) {

  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                     } else {

  1244                         final Variable vi3 = smapper.pop(this);

  1245                         final Variable vo5 = smapper.pushT(vi2.getType());

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

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

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

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

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

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

  1253                         emit(smapper, this, " @1 = @2, @3 = @4;",

  1254                              vo4, vo1, vo5, vo2);

  1255                     }

  1256                     break;

  1257                 }

  1258                 case opc_dup_x2: {

  1259                     final Variable vi1 = smapper.pop(this);

  1260                     final Variable vi2 = smapper.pop(this);

  1262                     if (vi2.isCategory2()) {

  1263                         final Variable vo3 = smapper.pushT(vi1.getType());

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

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

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

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

  1269                     } else {

  1270                         final Variable vi3 = smapper.pop(this);

  1271                         final Variable vo4 = smapper.pushT(vi1.getType());

  1272                         final Variable vo3 = smapper.pushT(vi3.getType());

  1273                         final Variable vo2 = smapper.pushT(vi2.getType());

  1274                         final Variable vo1 = smapper.pushT(vi1.getType());

  1276                         emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6, @7 = @8;",

  1277                              vo1, vi1, vo2, vi2, vo3, vi3, vo4, vo1);

  1278                     }

  1279                     break;

  1280                 }

  1281                 case opc_dup2_x2: {

  1282                     final Variable vi1 = smapper.pop(this);

  1283                     final Variable vi2 = smapper.pop(this);

  1285                     if (vi1.isCategory2()) {

  1286                         if (vi2.isCategory2()) {

  1287                             final Variable vo3 = smapper.pushT(vi1.getType());

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

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

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

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

  1293                         } else {

  1294                             final Variable vi3 = smapper.pop(this);

  1295                             final Variable vo4 = smapper.pushT(vi1.getType());

  1296                             final Variable vo3 = smapper.pushT(vi3.getType());

  1297                             final Variable vo2 = smapper.pushT(vi2.getType());

  1298                             final Variable vo1 = smapper.pushT(vi1.getType());

  1300                             emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6, @7 = @8;",

  1301                                  vo1, vi1, vo2, vi2, vo3, vi3, vo4, vo1);

  1302                         }

  1303                     } else {

  1304                         final Variable vi3 = smapper.pop(this);

  1306                         if (vi3.isCategory2()) {

  1307                             final Variable vo5 = smapper.pushT(vi2.getType());

  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,",

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

  1315                             emit(smapper, this, " @1 = @2, @3 = @4;",

  1316                                  vo4, vo1, vo5, vo2);

  1317                         } else {

  1318                             final Variable vi4 = smapper.pop(this);

  1319                             final Variable vo6 = smapper.pushT(vi2.getType());

  1320                             final Variable vo5 = smapper.pushT(vi1.getType());

  1321                             final Variable vo4 = smapper.pushT(vi4.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, @7 = @8,",

  1327                                  vo1, vi1, vo2, vi2, vo3, vi3, vo4, vi4);

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

  1329                                  vo5, vo1, vo6, vo2);

  1330                         }

  1331                     }

  1332                     break;

  1333                 }

  1334                 case opc_swap: {

  1335                     final Variable vi1 = smapper.get(0);

  1336                     final Variable vi2 = smapper.get(1);

  1338                     if (vi1.getType() == vi2.getType()) {

  1339                         final Variable tmp = smapper.pushT(vi1.getType());

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

  1342                              tmp, vi1, vi2);

  1343                         smapper.pop(1);

  1344                     } else {

  1345                         smapper.pop(2);

  1346                         smapper.pushT(vi1.getType());

  1347                         smapper.pushT(vi2.getType());

  1348                     }

  1349                     break;

  1350                 }

  1351                 case opc_bipush:

  1352                     smapper.assign(this, VarType.INTEGER,

  1353                         "(" + Integer.toString(byteCodes[++i]) + ")");

  1354                     break;

  1355                 case opc_sipush:

  1356                     smapper.assign(this, VarType.INTEGER,

  1357                         "(" + Integer.toString(readShortArg(byteCodes, i)) + ")"

  1358                     );

  1359                     i += 2;

  1360                     break;

  1361                 case opc_getfield: {

  1362                     int indx = readUShortArg(byteCodes, i);

  1363                     String[] fi = jc.getFieldInfoName(indx);

  1364                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1365                     final String mangleClass = mangleClassName(fi[0]);

  1366                     final String mangleClassAccess = accessClass(mangleClass);

  1367                     smapper.replace(this, type, "@2.call(@1)",

  1368                          smapper.getA(0),

  1369                          accessField(mangleClassAccess + "(false)",

  1370                                      "_" + fi[1], fi)

  1371                     );

  1372                     i += 2;

  1373                     break;

  1374                 }

  1375                 case opc_putfield: {

  1376                     int indx = readUShortArg(byteCodes, i);

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

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

  1379                     final String mangleClass = mangleClassName(fi[0]);

  1380                     final String mangleClassAccess = accessClass(mangleClass);

  1381                     emit(smapper, this, "@3.call(@2, @1);",

  1382                          smapper.popT(type),

  1383                          smapper.popA(),

  1384                          accessField(mangleClassAccess + "(false)",

  1385                                      "_" + fi[1], fi));

  1386                     i += 2;

  1387                     break;

  1388                 }

  1389                 case opc_getstatic: {

  1390                     int indx = readUShortArg(byteCodes, i);

  1391                     String[] fi = jc.getFieldInfoName(indx);

  1392                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1393                     String ac = accessClass(mangleClassName(fi[0]));

  1394                     String af = accessField(ac + "(false)", "_" + fi[1], fi);

  1395                     smapper.assign(this, type, af + "()");

  1396                     i += 2;

  1397                     addReference(fi[0]);

  1398                     break;

  1399                 }

  1400                 case opc_putstatic: {

  1401                     int indx = readUShortArg(byteCodes, i);

  1402                     String[] fi = jc.getFieldInfoName(indx);

  1403                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1404                     emit(smapper, this, "@1(false)._@2(@3);",

  1405                          accessClass(mangleClassName(fi[0])), fi[1],

  1406                          smapper.popT(type));

  1407                     i += 2;

  1408                     addReference(fi[0]);

  1409                     break;

  1410                 }

  1411                 case opc_checkcast: {

  1412                     int indx = readUShortArg(byteCodes, i);

  1413                     generateCheckcast(indx, smapper);

  1414                     i += 2;

  1415                     break;

  1416                 }

  1417                 case opc_instanceof: {

  1418                     int indx = readUShortArg(byteCodes, i);

  1419                     generateInstanceOf(indx, smapper);

  1420                     i += 2;

  1421                     break;

  1422                 }

  1423                 case opc_athrow: {

  1424                     final CharSequence v = smapper.popA();

  1425                     smapper.clear();

  1427                     emit(smapper, this, "{ var @1 = @2; throw @2; }",

  1428                          smapper.pushA(), v);

  1429                     break;

  1430                 }

  1432                 case opc_monitorenter: {

  1433                     debug("/* monitor enter */");

  1434                     smapper.popA();

  1435                     break;

  1436                 }

  1438                 case opc_monitorexit: {

  1439                     debug("/* monitor exit */");

  1440                     smapper.popA();

  1441                     break;

  1442                 }

  1444                 case opc_wide:

  1445                     wide = true;

  1446                     break;

  1448                 default: {

  1449                     wide = false;

  1450                     emit(smapper, this, "throw 'unknown bytecode @1';",

  1451                          Integer.toString(c));

  1452                 }

  1453             }

  1454             if (debug(" //")) {

  1455                 generateByteCodeComment(prev, i, byteCodes);

  1456             }

  1457             if (outChanged) {

  1458                 append("\n");

  1459             }

  1460         }

  1461         if (previousTrap != null) {

  1462             generateCatch(previousTrap, byteCodes.length, topMostLabel);

  1463         }

  1464         if (didBranches) {

  1465             append("\n    }\n");

  1466         }

  1467         while (openBraces-- > 0) {

  1468             append('}');

  1469         }

  1470         if (defineProp) {

  1471             append("\n}});");

  1472         } else {

  1473             append("\n};");

  1474         }

  1475     }

  1477     private int generateIf(StackMapper mapper, byte[] byteCodes,

  1478         int i, final CharSequence v2, final CharSequence v1,

  1479         final String test, int topMostLabel

  1480     ) throws IOException {

  1481         mapper.flush(this);

  1482         int indx = i + readShortArg(byteCodes, i);

  1483         append("if ((").append(v1)

  1484            .append(") ").append(test).append(" (")

  1485            .append(v2).append(")) ");

  1486         goTo(this, i, indx, topMostLabel);

  1487         return i + 2;

  1488     }

  1490     private int readInt4(byte[] byteCodes, int offset) {

  1491         final int d = byteCodes[offset + 0] << 24;

  1492         final int c = byteCodes[offset + 1] << 16;

  1493         final int b = byteCodes[offset + 2] << 8;

  1494         final int a = byteCodes[offset + 3];

  1495         return (d & 0xff000000) | (c & 0xff0000) | (b & 0xff00) | (a & 0xff);

  1496     }

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

  1498         return byteCodes[offset] & 0xff;

  1499     }

  1501     private static int readUShort(byte[] byteCodes, int offset) {

  1502         return ((byteCodes[offset] & 0xff) << 8)

  1503                     | (byteCodes[offset + 1] & 0xff);

  1504     }

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

  1506         return readUShort(byteCodes, offsetInstruction + 1);

  1507     }

  1509     private static int readShort(byte[] byteCodes, int offset) {

  1510         int signed = byteCodes[offset];

  1511         byte b0 = (byte)signed;

  1512         return (b0 << 8) | (byteCodes[offset + 1] & 0xff);

  1513     }

  1514     private static int readShortArg(byte[] byteCodes, int offsetInstruction) {

  1515         return readShort(byteCodes, offsetInstruction + 1);

  1516     }

  1518     private static void countArgs(String descriptor, char[] returnType, StringBuilder sig, StringBuilder cnt) {

  1519         int i = 0;

  1520         Boolean count = null;

  1521         boolean array = false;

  1522         sig.append("__");

  1523         int firstPos = sig.length();

  1524         while (i < descriptor.length()) {

  1525             char ch = descriptor.charAt(i++);

  1526             switch (ch) {

  1527                 case '(':

  1528                     count = true;

  1529                     continue;

  1530                 case ')':

  1531                     count = false;

  1532                     continue;

  1533                 case 'B':

  1534                 case 'C':

  1535                 case 'D':

  1536                 case 'F':

  1537                 case 'I':

  1538                 case 'J':

  1539                 case 'S':

  1540                 case 'Z':

  1541                     if (count) {

  1542                         if (array) {

  1543                             sig.append("_3");

  1544                         }

  1545                         sig.append(ch);

  1546                         if (ch == 'J' || ch == 'D') {

  1547                             cnt.append('1');

  1548                         } else {

  1549                             cnt.append('0');

  1550                         }

  1551                     } else {

  1552                         sig.insert(firstPos, ch);

  1553                         if (array) {

  1554                             returnType[0] = '[';

  1555                             sig.insert(firstPos, "_3");

  1556                         } else {

  1557                             returnType[0] = ch;

  1558                         }

  1559                     }

  1560                     array = false;

  1561                     continue;

  1562                 case 'V':

  1563                     assert !count;

  1564                     returnType[0] = 'V';

  1565                     sig.insert(firstPos, 'V');

  1566                     continue;

  1567                 case 'L':

  1568                     int next = descriptor.indexOf(';', i);

  1569                     String realSig = mangleSig(descriptor, i - 1, next + 1);

  1570                     if (count) {

  1571                         if (array) {

  1572                             sig.append("_3");

  1573                         }

  1574                         sig.append(realSig);

  1575                         cnt.append('0');

  1576                     } else {

  1577                         sig.insert(firstPos, realSig);

  1578                         if (array) {

  1579                             sig.insert(firstPos, "_3");

  1580                         }

  1581                         returnType[0] = 'L';

  1582                     }

  1583                     i = next + 1;

  1584                     array = false;

  1585                     continue;

  1586                 case '[':

  1587                     array = true;

  1588                     continue;

  1589                 default:

  1590                     throw new IllegalStateException("Invalid char: " + ch);

  1591             }

  1592         }

  1593     }

  1595     static String mangleSig(String sig) {

  1596         return mangleSig(sig, 0, sig.length());

  1597     }

  1599     private static String mangleMethodName(String name) {

  1600         StringBuilder sb = new StringBuilder(name.length() * 2);

  1601         int last = name.length();

  1602         for (int i = 0; i < last; i++) {

  1603             final char ch = name.charAt(i);

  1604             switch (ch) {

  1605                 case '_': sb.append("_1"); break;

  1606                 default: sb.append(ch); break;

  1607             }

  1608         }

  1609         return sb.toString();

  1610     }

  1611     private static String mangleSig(String txt, int first, int last) {

  1612         StringBuilder sb = new StringBuilder((last - first) * 2);

  1613         for (int i = first; i < last; i++) {

  1614             final char ch = txt.charAt(i);

  1615             switch (ch) {

  1616                 case '/': sb.append('_'); break;

  1617                 case '_': sb.append("_1"); break;

  1618                 case ';': sb.append("_2"); break;

  1619                 case '[': sb.append("_3"); break;

  1620                 default:

  1621                     if (Character.isJavaIdentifierPart(ch)) {

  1622                         sb.append(ch);

  1623                     } else {

  1624                         sb.append("_0");

  1625                         String hex = Integer.toHexString(ch).toLowerCase();

  1626                         for (int m = hex.length(); m < 4; m++) {

  1627                             sb.append("0");

  1628                         }

  1629                         sb.append(hex);

  1630                     }

  1631                 break;

  1632             }

  1633         }

  1634         return sb.toString();

  1635     }

  1637     private static String mangleClassName(String name) {

  1638         return mangleSig(name);

  1639     }

  1641     private static String findMethodName(MethodData m, StringBuilder cnt) {

  1642         StringBuilder name = new StringBuilder();

  1643         if ("<init>".equals(m.getName())) { // NOI18N

  1644             name.append("cons"); // NOI18N

  1645         } else if ("<clinit>".equals(m.getName())) { // NOI18N

  1646             name.append("class"); // NOI18N

  1647         } else {

  1648             name.append(mangleMethodName(m.getName()));

  1649         }

  1651         countArgs(m.getInternalSig(), new char[1], name, cnt);

  1652         return name.toString();

  1653     }

  1655     static String findMethodName(String[] mi, StringBuilder cnt, char[] returnType) {

  1656         StringBuilder name = new StringBuilder();

  1657         String descr = mi[2];//mi.getDescriptor();

  1658         String nm= mi[1];

  1659         if ("<init>".equals(nm)) { // NOI18N

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

  1661         } else {

  1662             name.append(mangleMethodName(nm));

  1663         }

  1664         countArgs(descr, returnType, name, cnt);

  1665         return name.toString();

  1666     }

  1668     private int invokeStaticMethod(byte[] byteCodes, int i, final StackMapper mapper, boolean isStatic)

  1669     throws IOException {

  1670         int methodIndex = readUShortArg(byteCodes, i);

  1671         String[] mi = jc.getFieldInfoName(methodIndex);

  1672         char[] returnType = { 'V' };

  1673         StringBuilder cnt = new StringBuilder();

  1674         String mn = findMethodName(mi, cnt, returnType);

  1676         final int numArguments = isStatic ? cnt.length() : cnt.length() + 1;

  1677         final CharSequence[] vars = new CharSequence[numArguments];

  1679         for (int j = numArguments - 1; j >= 0; --j) {

  1680             vars[j] = mapper.popValue();

  1681         }

  1683         if (returnType[0] != 'V') {

  1684             mapper.flush(this);

  1685             append("var ")

  1686                .append(mapper.pushT(VarType.fromFieldType(returnType[0])))

  1687                .append(" = ");

  1688         }

  1690         final String in = mi[0];

  1691         String mcn;

  1692         if (callbacks && (

  1693             in.equals("org/apidesign/html/boot/spi/Fn") ||

  1694             in.equals("org/netbeans/html/boot/spi/Fn")

  1695         )) {

  1696             mcn = "java_lang_Class";

  1697         } else {

  1698             mcn = mangleClassName(in);

  1699         }

  1700         String object = accessClass(mcn) + "(false)";

  1701         if (mn.startsWith("cons_")) {

  1702             object += ".constructor";

  1703         }

  1704         append(accessStaticMethod(object, mn, mi));

  1705         if (isStatic) {

  1706             append('(');

  1707         } else {

  1708             append(".call(");

  1709         }

  1710         if (numArguments > 0) {

  1711             append(vars[0]);

  1712             for (int j = 1; j < numArguments; ++j) {

  1713                 append(", ");

  1714                 append(vars[j]);

  1715             }

  1716         }

  1717         append(");");

  1718         i += 2;

  1719         addReference(in);

  1720         return i;

  1721     }

  1722     private int invokeVirtualMethod(byte[] byteCodes, int i, final StackMapper mapper)

  1723     throws IOException {

  1724         int methodIndex = readUShortArg(byteCodes, i);

  1725         String[] mi = jc.getFieldInfoName(methodIndex);

  1726         char[] returnType = { 'V' };

  1727         StringBuilder cnt = new StringBuilder();

  1728         String mn = findMethodName(mi, cnt, returnType);

  1730         final int numArguments = cnt.length() + 1;

  1731         final CharSequence[] vars =  new CharSequence[numArguments];

  1733         for (int j = numArguments - 1; j >= 0; --j) {

  1734             vars[j] = mapper.popValue();

  1735         }

  1737         if (returnType[0] != 'V') {

  1738             append("var ")

  1739                .append(mapper.pushT(VarType.fromFieldType(returnType[0])))

  1740                .append(" = ");

  1741         }

  1743         append(accessVirtualMethod(vars[0].toString(), mn, mi, numArguments));

  1744         String sep = "";

  1745         for (int j = 1; j < numArguments; ++j) {

  1746             append(sep);

  1747             append(vars[j]);

  1748             sep = ", ";

  1749         }

  1750         append(");");

  1751         i += 2;

  1752         return i;

  1753     }

  1755     private void addReference(String cn) throws IOException {

  1756         if (requireReference(cn)) {

  1757             debug(" /* needs " + cn + " */");

  1758         }

  1759     }

  1761     private void outType(String d, StringBuilder out) {

  1762         int arr = 0;

  1763         while (d.charAt(0) == '[') {

  1764             out.append('A');

  1765             d = d.substring(1);

  1766         }

  1767         if (d.charAt(0) == 'L') {

  1768             assert d.charAt(d.length() - 1) == ';';

  1769             out.append(d.replace('/', '_').substring(0, d.length() - 1));

  1770         } else {

  1771             out.append(d);

  1772         }

  1773     }

  1775     private String encodeConstant(int entryIndex) throws IOException {

  1776         String[] classRef = { null };

  1777         String s = jc.stringValue(entryIndex, classRef);

  1778         if (classRef[0] != null) {

  1779             if (classRef[0].startsWith("[")) {

  1780                 s = accessClass("java_lang_Class") + "(false)['forName__Ljava_lang_Class_2Ljava_lang_String_2']('" + classRef[0] + "')";

  1781             } else {

  1782                 addReference(classRef[0]);

  1783                 s = accessClass(mangleClassName(s)) + "(false).constructor.$class";

  1784             }

  1785         }

  1786         return s;

  1787     }

  1789     private String javaScriptBody(String destObject, MethodData m, boolean isStatic) throws IOException {

  1790         byte[] arr = m.findAnnotationData(true);

  1791         if (arr == null) {

  1792             return null;

  1793         }

  1794         final String jvmType = "Lorg/apidesign/bck2brwsr/core/JavaScriptBody;";

  1795         final String htmlType = "Lnet/java/html/js/JavaScriptBody;";

  1796         class P extends AnnotationParser {

  1797             public P() {

  1798                 super(false, true);

  1799             }

  1801             int cnt;

  1802             String[] args = new String[30];

  1803             String body;

  1804             boolean javacall;

  1805             boolean html4j;

  1807             @Override

  1808             protected void visitAttr(String type, String attr, String at, String value) {

  1809                 if (type.equals(jvmType)) {

  1810                     if ("body".equals(attr)) {

  1811                         body = value;

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

  1813                         args[cnt++] = value;

  1814                     } else {

  1815                         throw new IllegalArgumentException(attr);

  1816                     }

  1817                 }

  1818                 if (type.equals(htmlType)) {

  1819                     html4j = true;

  1820                     if ("body".equals(attr)) {

  1821                         body = value;

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

  1823                         args[cnt++] = value;

  1824                     } else if ("javacall".equals(attr)) {

  1825                         javacall = "1".equals(value);

  1826                     } else if ("wait4js".equals(attr)) {

  1827                         // ignore, we always invoke synchronously

  1828                     } else {

  1829                         throw new IllegalArgumentException(attr);

  1830                     }

  1831                 }

  1832             }

  1833         }

  1834         P p = new P();

  1835         p.parse(arr, jc);

  1836         if (p.body == null) {

  1837             return null;

  1838         }

  1839         StringBuilder cnt = new StringBuilder();

  1840         final String mn = findMethodName(m, cnt);

  1841         append("m = ").append(destObject).append(".").append(mn);

  1842         append(" = function(");

  1843         String space = "";

  1844         int index = 0;

  1845         StringBuilder toValue = new StringBuilder();

  1846         for (int i = 0; i < cnt.length(); i++) {

  1847             append(space);

  1848             space = outputArg(this, p.args, index);

  1849             if (p.html4j && space.length() > 0) {

  1850                 toValue.append("\n  ").append(p.args[index]).append(" = ")

  1851                     .append(accessClass("java_lang_Class")).append("(false).toJS(").

  1852                     append(p.args[index]).append(");");

  1853             }

  1854             index++;

  1855         }

  1856         append(") {").append("\n");

  1857         append(toValue.toString());

  1858         if (p.javacall) {

  1859             int lastSlash = jc.getClassName().lastIndexOf('/');

  1860             final String pkg = jc.getClassName().substring(0, lastSlash);

  1861             append(mangleCallbacks(pkg, p.body));

  1862             requireReference(pkg + "/$JsCallbacks$");

  1863         } else {

  1864             append(p.body);

  1865         }

  1866         append("\n}\n");

  1867         return mn;

  1868     }

  1870     private static CharSequence mangleCallbacks(String pkgName, String body) {

  1871         StringBuilder sb = new StringBuilder();

  1872         int pos = 0;

  1873         for (;;) {

  1874             int next = body.indexOf(".@", pos);

  1875             if (next == -1) {

  1876                 sb.append(body.substring(pos));

  1877                 body = sb.toString();

  1878                 break;

  1879             }

  1880             int ident = next;

  1881             while (ident > 0) {

  1882                 if (!Character.isJavaIdentifierPart(body.charAt(--ident))) {

  1883                     ident++;

  1884                     break;

  1885                 }

  1886             }

  1887             String refId = body.substring(ident, next);

  1889             sb.append(body.substring(pos, ident));

  1891             int sigBeg = body.indexOf('(', next);

  1892             int sigEnd = body.indexOf(')', sigBeg);

  1893             int colon4 = body.indexOf("::", next);

  1894             if (sigBeg == -1 || sigEnd == -1 || colon4 == -1) {

  1895                 throw new IllegalStateException("Malformed body " + body);

  1896             }

  1897             String fqn = body.substring(next + 2, colon4);

  1898             String method = body.substring(colon4 + 2, sigBeg);

  1899             String params = body.substring(sigBeg, sigEnd + 1);

  1901             int paramBeg = body.indexOf('(', sigEnd + 1);

  1903             sb.append("vm.").append(pkgName.replace('/', '_')).append("_$JsCallbacks$(false)._VM().");

  1904             sb.append(mangleJsCallbacks(fqn, method, params, false));

  1905             sb.append("(").append(refId);

  1906             if (body.charAt(paramBeg + 1) != ')') {

  1907                 sb.append(",");

  1908             }

  1909             pos = paramBeg + 1;

  1910         }

  1911         sb = null;

  1912         pos = 0;

  1913         for (;;) {

  1914             int next = body.indexOf("@", pos);

  1915             if (next == -1) {

  1916                 if (sb == null) {

  1917                     return body;

  1918                 }

  1919                 sb.append(body.substring(pos));

  1920                 return sb;

  1921             }

  1922             if (sb == null) {

  1923                 sb = new StringBuilder();

  1924             }

  1926             sb.append(body.substring(pos, next));

  1928             int sigBeg = body.indexOf('(', next);

  1929             int sigEnd = body.indexOf(')', sigBeg);

  1930             int colon4 = body.indexOf("::", next);

  1931             if (sigBeg == -1 || sigEnd == -1 || colon4 == -1) {

  1932                 throw new IllegalStateException("Malformed body " + body);

  1933             }

  1934             String fqn = body.substring(next + 1, colon4);

  1935             String method = body.substring(colon4 + 2, sigBeg);

  1936             String params = body.substring(sigBeg, sigEnd + 1);

  1938             int paramBeg = body.indexOf('(', sigEnd + 1);

  1940             sb.append("vm.").append(pkgName.replace('/', '_')).append("_$JsCallbacks$(false)._VM().");

  1941             sb.append(mangleJsCallbacks(fqn, method, params, true));

  1942             sb.append("(");

  1943             pos = paramBeg + 1;

  1944         }

  1945     }

  1947     static String mangleJsCallbacks(String fqn, String method, String params, boolean isStatic) {

  1948         if (params.startsWith("(")) {

  1949             params = params.substring(1);

  1950         }

  1951         if (params.endsWith(")")) {

  1952             params = params.substring(0, params.length() - 1);

  1953         }

  1954         StringBuilder sb = new StringBuilder();

  1955         final String fqnu = fqn.replace('.', '_');

  1956         final String rfqn = mangleClassName(fqnu);

  1957         final String rm = mangleMethodName(method);

  1958         final String srp;

  1959         {

  1960             StringBuilder pb = new StringBuilder();

  1961             int len = params.length();

  1962             int indx = 0;

  1963             while (indx < len) {

  1964                 char ch = params.charAt(indx);

  1965                 if (ch == '[' || ch == 'L') {

  1966                     pb.append("Ljava/lang/Object;");

  1967                     indx = params.indexOf(';', indx) + 1;

  1968                 } else {

  1969                     pb.append(ch);

  1970                     indx++;

  1971                 }

  1972             }

  1973             srp = mangleSig(pb.toString());

  1974         }

  1975         final String rp = mangleSig(params);

  1976         final String mrp = mangleMethodName(rp);

  1977         sb.append(rfqn).append("$").append(rm).

  1978             append('$').append(mrp).append("__Ljava_lang_Object_2");

  1979         if (!isStatic) {

  1980             sb.append('L').append(fqnu).append("_2");

  1981         }

  1982         sb.append(srp);

  1983         return sb.toString();

  1984     }

  1986     private static String className(ClassData jc) {

  1987         //return jc.getName().getInternalName().replace('/', '_');

  1988         return mangleClassName(jc.getClassName());

  1989     }

  1991     private static String[] findAnnotation(

  1992         byte[] arr, ClassData cd, final String className,

  1993         final String... attrNames

  1994     ) throws IOException {

  1995         if (arr == null) {

  1996             return null;

  1997         }

  1998         final String[] values = new String[attrNames.length];

  1999         final boolean[] found = { false };

  2000         final String jvmType = "L" + className.replace('.', '/') + ";";

  2001         AnnotationParser ap = new AnnotationParser(false, true) {

  2002             @Override

  2003             protected void visitAttr(String type, String attr, String at, String value) {

  2004                 if (type.equals(jvmType)) {

  2005                     found[0] = true;

  2006                     for (int i = 0; i < attrNames.length; i++) {

  2007                         if (attrNames[i].equals(attr)) {

  2008                             values[i] = value;

  2009                         }

  2010                     }

  2011                 }

  2012             }

  2014         };

  2015         ap.parse(arr, cd);

  2016         return found[0] ? values : null;

  2017     }

  2019     private CharSequence initField(FieldData v) {

  2020         final String is = v.getInternalSig();

  2021         if (is.length() == 1) {

  2022             switch (is.charAt(0)) {

  2023                 case 'S':

  2024                 case 'J':

  2025                 case 'B':

  2026                 case 'Z':

  2027                 case 'C':

  2028                 case 'I': return " = 0;";

  2029                 case 'F':

  2030                 case 'D': return " = 0.0;";

  2031                 default:

  2032                     throw new IllegalStateException(is);

  2033             }

  2034         }

  2035         return " = null;";

  2036     }

  2038     private void generateAnno(ClassData cd, byte[] data) throws IOException {

  2039         AnnotationParser ap = new AnnotationParser(true, false) {

  2040             int[] cnt = new int[32];

  2041             int depth;

  2043             @Override

  2044             protected void visitAnnotationStart(String attrType, boolean top) throws IOException {

  2045                 final String slashType = attrType.substring(1, attrType.length() - 1);

  2046                 requireReference(slashType);

  2048                 if (cnt[depth]++ > 0) {

  2049                     append(",");

  2050                 }

  2051                 if (top) {

  2052                     append('"').append(attrType).append("\" : ");

  2053                 }

  2054                 append("{\n");

  2055                 cnt[++depth] = 0;

  2056             }

  2058             @Override

  2059             protected void visitAnnotationEnd(String type, boolean top) throws IOException {

  2060                 append("\n}\n");

  2061                 depth--;

  2062             }

  2064             @Override

  2065             protected void visitValueStart(String attrName, char type) throws IOException {

  2066                 if (cnt[depth]++ > 0) {

  2067                     append(",\n");

  2068                 }

  2069                 cnt[++depth] = 0;

  2070                 if (attrName != null) {

  2071                     append('"').append(attrName).append("\" : ");

  2072                 }

  2073                 if (type == '[') {

  2074                     append("[");

  2075                 }

  2076             }

  2078             @Override

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

  2080                 if (type == '[') {

  2081                     append("]");

  2082                 }

  2083                 depth--;

  2084             }

  2086             @Override

  2087             protected void visitAttr(String type, String attr, String attrType, String value)

  2088             throws IOException {

  2089                 if (attr == null && value == null) {

  2090                     return;

  2091                 }

  2092                 append(value);

  2093             }

  2095             @Override

  2096             protected void visitEnumAttr(String type, String attr, String attrType, String value)

  2097             throws IOException {

  2098                 final String slashType = attrType.substring(1, attrType.length() - 1);

  2099                 requireReference(slashType);

  2101                 final String cn = mangleClassName(slashType);

  2102                 append(accessClass(cn))

  2103                    .append("(false)['valueOf__L").

  2104                     append(cn).

  2105                     append("_2Ljava_lang_String_2']('").

  2106                     append(value).

  2107                     append("')");

  2108             }

  2109         };

  2110         ap.parse(data, cd);

  2111     }

  2113     private static String outputArg(Appendable out, String[] args, int indx) throws IOException {

  2114         final String name = args[indx];

  2115         if (name == null) {

  2116             return "";

  2117         }

  2118         if (name.contains(",")) {

  2119             throw new IOException("Wrong parameter with ',': " + name);

  2120         }

  2121         out.append(name);

  2122         return ",";

  2123     }

  2125     final void emitNoFlush(

  2126         StackMapper sm,

  2127         final String format, final CharSequence... params

  2128     ) throws IOException {

  2129         emitImpl(this, format, params);

  2130     }

  2131     static final void emit(

  2132         StackMapper sm,

  2133         final Appendable out,

  2134         final String format, final CharSequence... params

  2135     ) throws IOException {

  2136         sm.flush(out);

  2137         emitImpl(out, format, params);

  2138     }

  2139     static void emitImpl(final Appendable out,

  2140                              final String format,

  2141                              final CharSequence... params) throws IOException {

  2142         final int length = format.length();

  2144         int processed = 0;

  2145         int paramOffset = format.indexOf('@');

  2146         while ((paramOffset != -1) && (paramOffset < (length - 1))) {

  2147             final char paramChar = format.charAt(paramOffset + 1);

  2148             if ((paramChar >= '1') && (paramChar <= '9')) {

  2149                 final int paramIndex = paramChar - '0' - 1;

  2151                 out.append(format, processed, paramOffset);

  2152                 out.append(params[paramIndex]);

  2154                 ++paramOffset;

  2155                 processed = paramOffset + 1;

  2156             }

  2158             paramOffset = format.indexOf('@', paramOffset + 1);

  2159         }

  2161         out.append(format, processed, length);

  2162     }

  2164     private void generateCatch(TrapData[] traps, int current, int topMostLabel) throws IOException {

  2165         append("} catch (e) {\n");

  2166         int finallyPC = -1;

  2167         for (TrapData e : traps) {

  2168             if (e == null) {

  2169                 break;

  2170             }

  2171             if (e.catch_cpx != 0) { //not finally

  2172                 final String classInternalName = jc.getClassName(e.catch_cpx);

  2173                 addReference(classInternalName);

  2174                 append("e = vm.java_lang_Class(false).bck2BrwsrThrwrbl(e);");

  2175                 append("if (e['$instOf_" + classInternalName.replace('/', '_') + "']) {");

  2176                 append("var stA0 = e;");

  2177                 goTo(this, current, e.handler_pc, topMostLabel);

  2178                 append("}\n");

  2179             } else {

  2180                 finallyPC = e.handler_pc;

  2181             }

  2182         }

  2183         if (finallyPC == -1) {

  2184             append("throw e;");

  2185         } else {

  2186             append("var stA0 = e;");

  2187             goTo(this, current, finallyPC, topMostLabel);

  2188         }

  2189         append("\n}");

  2190     }

  2192     private static void goTo(Appendable out, int current, int to, int canBack) throws IOException {

  2193         if (to < current) {

  2194             if (canBack < to) {

  2195                 out.append("{ gt = 0; continue X_" + to + "; }");

  2196             } else {

  2197                 out.append("{ gt = " + to + "; continue X_0; }");

  2198             }

  2199         } else {

  2200             out.append("{ gt = " + to + "; break IF; }");

  2201         }

  2202     }

  2204     private static void emitIf(

  2205         StackMapper sm,

  2206         Appendable out, String pattern,

  2207         CharSequence param,

  2208         int current, int to, int canBack

  2209     ) throws IOException {

  2210         sm.flush(out);

  2211         emitImpl(out, pattern, param);

  2212         goTo(out, current, to, canBack);

  2213     }

  2215     private void generateNewArray(int atype, final StackMapper smapper) throws IOException, IllegalStateException {

  2216         String jvmType;

  2217         switch (atype) {

  2218             case 4: jvmType = "[Z"; break;

  2219             case 5: jvmType = "[C"; break;

  2220             case 6: jvmType = "[F"; break;

  2221             case 7: jvmType = "[D"; break;

  2222             case 8: jvmType = "[B"; break;

  2223             case 9: jvmType = "[S"; break;

  2224             case 10: jvmType = "[I"; break;

  2225             case 11: jvmType = "[J"; break;

  2226             default: throw new IllegalStateException("Array type: " + atype);

  2227         }

  2228         emit(smapper, this,

  2229             "var @2 = Array.prototype['newArray__Ljava_lang_Object_2ZLjava_lang_String_2Ljava_lang_Object_2I'](true, '@3', null, @1);",

  2230              smapper.popI(), smapper.pushA(), jvmType);

  2231     }

  2233     private void generateANewArray(int type, final StackMapper smapper) throws IOException {

  2234         String typeName = jc.getClassName(type);

  2235         String ref = "null";

  2236         if (typeName.startsWith("[")) {

  2237             typeName = "'[" + typeName + "'";

  2238         } else {

  2239             ref = "vm." + mangleClassName(typeName);

  2240             typeName = "'[L" + typeName + ";'";

  2241         }

  2242         emit(smapper, this,

  2243             "var @2 = Array.prototype['newArray__Ljava_lang_Object_2ZLjava_lang_String_2Ljava_lang_Object_2I'](false, @3, @4, @1);",

  2244              smapper.popI(), smapper.pushA(), typeName, ref);

  2245     }

  2247     private int generateMultiANewArray(int type, final byte[] byteCodes, int i, final StackMapper smapper) throws IOException {

  2248         String typeName = jc.getClassName(type);

  2249         int dim = readUByte(byteCodes, ++i);

  2250         StringBuilder dims = new StringBuilder();

  2251         dims.append('[');

  2252         for (int d = 0; d < dim; d++) {

  2253             if (d != 0) {

  2254                 dims.insert(1, ",");

  2255             }

  2256             dims.insert(1, smapper.popI());

  2257         }

  2258         dims.append(']');

  2259         String fn = "null";

  2260         if (typeName.charAt(dim) == 'L') {

  2261             fn = "vm." + mangleClassName(typeName.substring(dim + 1, typeName.length() - 1));

  2262         }

  2263         emit(smapper, this,

  2264             "var @2 = Array.prototype['multiNewArray__Ljava_lang_Object_2Ljava_lang_String_2_3ILjava_lang_Object_2']('@3', @1, @4);",

  2265              dims.toString(), smapper.pushA(), typeName, fn

  2266         );

  2267         return i;

  2268     }

  2270     private int generateTableSwitch(int i, final byte[] byteCodes, final StackMapper smapper, int topMostLabel) throws IOException {

  2271         int table = i / 4 * 4 + 4;

  2272         int dflt = i + readInt4(byteCodes, table);

  2273         table += 4;

  2274         int low = readInt4(byteCodes, table);

  2275         table += 4;

  2276         int high = readInt4(byteCodes, table);

  2277         table += 4;

  2278         final CharSequence swVar = smapper.popValue();

  2279         smapper.flush(this);

  2280         append("switch (").append(swVar).append(") {\n");

  2281         while (low <= high) {

  2282             int offset = i + readInt4(byteCodes, table);

  2283             table += 4;

  2284             append("  case " + low).append(":"); goTo(this, i, offset, topMostLabel); append('\n');

  2285             low++;

  2286         }

  2287         append("  default: ");

  2288         goTo(this, i, dflt, topMostLabel);

  2289         append("\n}");

  2290         i = table - 1;

  2291         return i;

  2292     }

  2294     private int generateLookupSwitch(int i, final byte[] byteCodes, final StackMapper smapper, int topMostLabel) throws IOException {

  2295         int table = i / 4 * 4 + 4;

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

  2297         table += 4;

  2298         int n = readInt4(byteCodes, table);

  2299         table += 4;

  2300         final CharSequence swVar = smapper.popValue();

  2301         smapper.flush(this);

  2302         append("switch (").append(swVar).append(") {\n");

  2303         while (n-- > 0) {

  2304             int cnstnt = readInt4(byteCodes, table);

  2305             table += 4;

  2306             int offset = i + readInt4(byteCodes, table);

  2307             table += 4;

  2308             append("  case " + cnstnt).append(": "); goTo(this, i, offset, topMostLabel); append('\n');

  2309         }

  2310         append("  default: ");

  2311         goTo(this, i, dflt, topMostLabel);

  2312         append("\n}");

  2313         i = table - 1;

  2314         return i;

  2315     }

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

  2318         String type = jc.getClassName(indx);

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

  2320             emit(smapper, this,

  2321                     "var @2 = @1 != null && @1['$instOf_@3'] ? 1 : 0;",

  2322                  smapper.popA(), smapper.pushI(),

  2323                  type.replace('/', '_'));

  2324         } else {

  2325             int cnt = 0;

  2326             while (type.charAt(cnt) == '[') {

  2327                 cnt++;

  2328             }

  2329             if (type.charAt(cnt) == 'L') {

  2330                 type = "vm." + mangleClassName(type.substring(cnt + 1, type.length() - 1));

  2331                 emit(smapper, this,

  2332                     "var @2 = Array.prototype['isInstance__ZLjava_lang_Object_2ILjava_lang_Object_2'](@1, @4, @3);",

  2333                     smapper.popA(), smapper.pushI(),

  2334                     type, "" + cnt

  2335                 );

  2336             } else {

  2337                 emit(smapper, this,

  2338                     "var @2 = Array.prototype['isInstance__ZLjava_lang_Object_2Ljava_lang_String_2'](@1, '@3');",

  2339                     smapper.popA(), smapper.pushI(), type

  2340                 );

  2341             }

  2342         }

  2343     }

  2345     private void generateCheckcast(int indx, final StackMapper smapper) throws IOException {

  2346         String type = jc.getClassName(indx);

  2347         if (!type.startsWith("[")) {

  2348             emitNoFlush(smapper,

  2349                  "if (@1 !== null && !@1['$instOf_@2']) throw vm.java_lang_ClassCastException(true);",

  2350                  smapper.getT(0, VarType.REFERENCE, false), type.replace('/', '_'));

  2351         } else {

  2352             int cnt = 0;

  2353             while (type.charAt(cnt) == '[') {

  2354                 cnt++;

  2355             }

  2356             if (type.charAt(cnt) == 'L') {

  2357                 type = "vm." + mangleClassName(type.substring(cnt + 1, type.length() - 1));

  2358                 emitNoFlush(smapper,

  2359                     "if (@1 !== null && !Array.prototype['isInstance__ZLjava_lang_Object_2ILjava_lang_Object_2'](@1, @3, @2)) throw vm.java_lang_ClassCastException(true);",

  2360                      smapper.getT(0, VarType.REFERENCE, false), type, "" + cnt

  2361                 );

  2362             } else {

  2363                 emitNoFlush(smapper,

  2364                     "if (@1 !== null && !Array.prototype['isInstance__ZLjava_lang_Object_2Ljava_lang_String_2'](@1, '@2')) throw vm.java_lang_ClassCastException(true);",

  2365                      smapper.getT(0, VarType.REFERENCE, false), type

  2366                 );

  2367             }

  2368         }

  2369     }

  2371     private void generateByteCodeComment(int prev, int i, final byte[] byteCodes) throws IOException {

  2372         for (int j = prev; j <= i; j++) {

  2373             append(" ");

  2374             final int cc = readUByte(byteCodes, j);

  2375             append(Integer.toString(cc));

  2376         }

  2377     }

  2379     @JavaScriptBody(args = "msg", body = "")

  2380     private static void println(String msg) {

  2381         System.err.println(msg);

  2382     }

  2383 }

author	Jaroslav Tulach <jaroslav.tulach@apidesign.org>
	Thu, 25 Sep 2014 23:48:41 +0200
changeset 1704	2e69145b9feb
parent 1702	228f26fc1159
child 1706	65c6f805797f
permissions	-rw-r--r--