hg/bck2brwsr: rt/vm/src/main/java/org/apidesign/vm4brwsr/ByteCodeToJavaScript.java@6d5075e5ceac

     1 /**

     2  * Back 2 Browser Bytecode Translator

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

     4  *

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

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

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

     8  *

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

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

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

    12  * GNU General Public License for more details.

    13  *

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

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

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

    17  */

    18 package org.apidesign.vm4brwsr;

    20 import java.io.IOException;

    21 import java.io.InputStream;

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

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

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

    26  *

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

    28  */

    29 abstract class ByteCodeToJavaScript implements Appendable {

    30     private ClassData jc;

    31     private final Appendable out;

    32     private boolean outChanged;

    33     private boolean callbacks;

    35     protected ByteCodeToJavaScript(Appendable out) {

    36         this.out = out;

    37     }

    39     @Override

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

    41         out.append(csq);

    42         outChanged = true;

    43         return this;

    44     }

    46     @Override

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

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

    49         outChanged = true;

    50         return this;

    51     }

    53     @Override

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

    55         out.append(c);

    56         outChanged = true;

    57         return this;

    58     }

    60     /* Collects additional required resources.

    61      *

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

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

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

    65      */

    66     protected abstract boolean requireReference(String internalClassName);

    68     /*

    69      * @param resourcePath name of resources to read

    70      */

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

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

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

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

    76      *

    77      * @param className suggested name of the class

    78      */

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

    80         return className + " = ";

    81     }

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

    83         return classOperation;

    84     }

    86     protected String accessField(String object, String mangledName,

    87                                  String[] fieldInfoName) throws IOException {

    88         return object + "." + mangledName;

    89     }

    91     protected String accessStaticMethod(

    92                              String object,

    93                              String mangledName,

    94                              String[] fieldInfoName) throws IOException {

    95         return object + "." + mangledName;

    96     }

    98     protected String accessVirtualMethod(

    99             String object,

   100             String mangledName,

   101             String[] fieldInfoName,

   102             int params

   103     ) throws IOException {

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

   105     }

   107     protected void declaredClass(ClassData classData, String mangledName)

   108             throws IOException {

   109     }

   111     protected void declaredField(FieldData fieldData,

   112                                  String destObject,

   113                                  String mangledName) throws IOException {

   114     }

   116     protected void declaredMethod(MethodData methodData,

   117                                   String destObject,

   118                                   String mangledName) throws IOException {

   119     }

   121     /** Prints out a debug message.

   122      *

   123      * @param msg the message

   124      * @return true if the message has been printed

   125      * @throws IOException

   126      */

   127     boolean debug(String msg) throws IOException {

   128         append(msg);

   129         return true;

   130     }

   132     /**

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

   134      *

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

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

   137      *

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

   139      */

   141     public String compile(InputStream classFile) throws IOException {

   142         return compile(new ClassData(classFile));

   143     }

   145     protected String compile(ClassData classData) throws IOException {

   146         this.jc = classData;

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

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

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

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

   151             );

   152         }

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

   154         {

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

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

   157                 "resource", "processByteCode"

   158             );

   159             if (arr != null) {

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

   161                     requireScript(arr[0]);

   162                 }

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

   164                     return null;

   165                 }

   166             }

   167         }

   168         {

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

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

   171                 "value"

   172             );

   173             if (arr != null) {

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

   175                     requireScript(arr[0]);

   176                 } else {

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

   178                     requireScript(

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

   180                     );

   181                 }

   182             }

   183         }

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

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

   186             "container", "prototype"

   187         );

   188         StringArray toInitilize = new StringArray();

   189         final String className = className(jc);

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

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

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

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

   194         if (proto == null) {

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

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

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

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

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

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

   201         } else {

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

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

   204                 proto[0] = "p";

   205             }

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

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

   208         }

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

   210             if (v.isStatic()) {

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

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

   213                         continue;

   214                     }

   215                 }

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

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

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

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

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

   221             } else {

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

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

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

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

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

   227                    .append("; };");

   228             }

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

   231         }

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

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

   234             if (javaScriptOnly(onlyArr)) continue;

   235             String destObject;

   236             String mn;

   237             append("\n    ");

   238             if (m.isStatic()) {

   239                 destObject = "c";

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

   241             } else {

   242                 if (m.isConstructor()) {

   243                     destObject = "CLS";

   244                     mn = generateInstanceMethod(destObject, m);

   245                 } else {

   246                     destObject = "c";

   247                     mn = generateInstanceMethod(destObject, m);

   248                 }

   249             }

   250             declaredMethod(m, destObject, mn);

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

   252             if (runAnno != null) {

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

   254                 generateAnno(jc, runAnno);

   255                 append("\n    };");

   256             }

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

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

   259         }

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

   261         append("\n    function fillInstOf(x) {");

   262         String instOfName = "$instOf_" + className;

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

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

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

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

   267             requireReference(superInterface);

   268         }

   269         append("\n    }");

   270         append("\n    try {");

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

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

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

   274         append("\n    }");

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

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

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

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

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

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

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

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

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

   284         if (classAnno != null) {

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

   286             generateAnno(jc, classAnno);

   287             append("\n    };");

   288         }

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

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

   291         }

   292         append("\n  }");

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

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

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

   296         append("\n    }");

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

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

   299             if (javaScriptOnly(onlyArr)) continue;

   300             if (!v.isStatic()) {

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

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

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

   304             }

   305         }

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

   307         append("\n  }");

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

   309         append("\n};");

   311         declaredClass(jc, className);

   313 //        StringBuilder sb = new StringBuilder();

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

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

   316 //        }

   317         return "";

   318     }

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

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

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

   323             "name", "value"

   324         );

   325         if (only != null) {

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

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

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

   329             }

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

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

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

   333             }

   334             return true;

   335         }

   336         return false;

   337     }

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

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

   340         if (jsb != null) {

   341             return jsb;

   342         }

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

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

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

   346         }

   347         generateMethod(destObject, mn, m);

   348         return mn;

   349     }

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

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

   353         if (jsb != null) {

   354             return jsb;

   355         }

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

   357         generateMethod(destObject, mn, m);

   358         return mn;

   359     }

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

   362             throws IOException {

   363         final StackMapIterator stackMapIterator = m.createStackMapIterator();

   364         TrapDataIterator trap = m.getTrapDataIterator();

   365         final LocalsMapper lmapper =

   366                 new LocalsMapper(stackMapIterator.getArguments());

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

   370         if (obj) {

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

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

   373         } else {

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

   375         }

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

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

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

   380         if (byteCodes == null) {

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

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

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

   384             if (obj) {

   385                 append("}");

   386             }

   387             append("};");

   388             return;

   389         }

   391         final StackMapper smapper = new StackMapper();

   393         if (!m.isStatic()) {

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

   395         }

   397         int lastStackFrame;

   398         TrapData[] previousTrap = null;

   399         boolean wide = false;

   400         boolean didBranches;

   401         if (stackMapIterator.isEmpty()) {

   402             didBranches = false;

   403             lastStackFrame = 0;

   404         } else {

   405             didBranches = true;

   406             lastStackFrame = -1;

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

   408         }

   410         int openBraces = 0;

   411         int topMostLabel = 0;

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

   413             int prev = i;

   414             outChanged = false;

   415             stackMapIterator.advanceTo(i);

   416             boolean changeInCatch = trap.advanceTo(i);

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

   418                 if (previousTrap != null) {

   419                     generateCatch(previousTrap, i, topMostLabel);

   420                     previousTrap = null;

   421                 }

   422             }

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

   424                 smapper.flush(this);

   425                 if (i != 0) {

   426                     append("    }\n");

   427                 }

   428                 if (openBraces > 64) {

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

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

   431                     }

   432                     openBraces = 1;

   433                     topMostLabel = i;

   434                 }

   436                 lastStackFrame = stackMapIterator.getFrameIndex();

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

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

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

   440                 openBraces++;

   441                 changeInCatch = true;

   442             } else {

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

   444             }

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

   446                 append("try {");

   447                 previousTrap = trap.current();

   448             }

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

   450             switch (c) {

   451                 case opc_aload_0:

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

   453                     break;

   454                 case opc_iload_0:

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

   456                     break;

   457                 case opc_lload_0:

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

   459                     break;

   460                 case opc_fload_0:

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

   462                     break;

   463                 case opc_dload_0:

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

   465                     break;

   466                 case opc_aload_1:

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

   468                     break;

   469                 case opc_iload_1:

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

   471                     break;

   472                 case opc_lload_1:

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

   474                     break;

   475                 case opc_fload_1:

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

   477                     break;

   478                 case opc_dload_1:

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

   480                     break;

   481                 case opc_aload_2:

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

   483                     break;

   484                 case opc_iload_2:

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

   486                     break;

   487                 case opc_lload_2:

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

   489                     break;

   490                 case opc_fload_2:

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

   492                     break;

   493                 case opc_dload_2:

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

   495                     break;

   496                 case opc_aload_3:

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

   498                     break;

   499                 case opc_iload_3:

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

   501                     break;

   502                 case opc_lload_3:

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

   504                     break;

   505                 case opc_fload_3:

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

   507                     break;

   508                 case opc_dload_3:

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

   510                     break;

   511                 case opc_iload: {

   512                     ++i;

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

   514                                           : readUByte(byteCodes, i);

   515                     wide = false;

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

   517                     break;

   518                 }

   519                 case opc_lload: {

   520                     ++i;

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

   522                                           : readUByte(byteCodes, i);

   523                     wide = false;

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

   525                     break;

   526                 }

   527                 case opc_fload: {

   528                     ++i;

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

   530                                           : readUByte(byteCodes, i);

   531                     wide = false;

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

   533                     break;

   534                 }

   535                 case opc_dload: {

   536                     ++i;

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

   538                                           : readUByte(byteCodes, i);

   539                     wide = false;

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

   541                     break;

   542                 }

   543                 case opc_aload: {

   544                     ++i;

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

   546                                           : readUByte(byteCodes, i);

   547                     wide = false;

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

   549                     break;

   550                 }

   551                 case opc_istore: {

   552                     ++i;

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

   554                                           : readUByte(byteCodes, i);

   555                     wide = false;

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

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

   558                     break;

   559                 }

   560                 case opc_lstore: {

   561                     ++i;

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

   563                                           : readUByte(byteCodes, i);

   564                     wide = false;

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

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

   567                     break;

   568                 }

   569                 case opc_fstore: {

   570                     ++i;

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

   572                                           : readUByte(byteCodes, i);

   573                     wide = false;

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

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

   576                     break;

   577                 }

   578                 case opc_dstore: {

   579                     ++i;

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

   581                                           : readUByte(byteCodes, i);

   582                     wide = false;

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

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

   585                     break;

   586                 }

   587                 case opc_astore: {

   588                     ++i;

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

   590                                           : readUByte(byteCodes, i);

   591                     wide = false;

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

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

   594                     break;

   595                 }

   596                 case opc_astore_0:

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

   598                     break;

   599                 case opc_istore_0:

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

   601                     break;

   602                 case opc_lstore_0:

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

   604                     break;

   605                 case opc_fstore_0:

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

   607                     break;

   608                 case opc_dstore_0:

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

   610                     break;

   611                 case opc_astore_1:

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

   613                     break;

   614                 case opc_istore_1:

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

   616                     break;

   617                 case opc_lstore_1:

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

   619                     break;

   620                 case opc_fstore_1:

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

   622                     break;

   623                 case opc_dstore_1:

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

   625                     break;

   626                 case opc_astore_2:

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

   628                     break;

   629                 case opc_istore_2:

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

   631                     break;

   632                 case opc_lstore_2:

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

   634                     break;

   635                 case opc_fstore_2:

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

   637                     break;

   638                 case opc_dstore_2:

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

   640                     break;

   641                 case opc_astore_3:

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

   643                     break;

   644                 case opc_istore_3:

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

   646                     break;

   647                 case opc_lstore_3:

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

   649                     break;

   650                 case opc_fstore_3:

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

   652                     break;

   653                 case opc_dstore_3:

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

   655                     break;

   656                 case opc_iadd:

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

   658                     break;

   659                 case opc_ladd:

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

   661                     break;

   662                 case opc_fadd:

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

   664                     break;

   665                 case opc_dadd:

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

   667                     break;

   668                 case opc_isub:

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

   670                     break;

   671                 case opc_lsub:

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

   673                     break;

   674                 case opc_fsub:

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

   676                     break;

   677                 case opc_dsub:

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

   679                     break;

   680                 case opc_imul:

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

   682                     break;

   683                 case opc_lmul:

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

   685                     break;

   686                 case opc_fmul:

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

   688                     break;

   689                 case opc_dmul:

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

   691                     break;

   692                 case opc_idiv:

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

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

   695                     break;

   696                 case opc_ldiv:

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

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

   699                     break;

   700                 case opc_fdiv:

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

   702                     break;

   703                 case opc_ddiv:

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

   705                     break;

   706                 case opc_irem:

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

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

   709                     break;

   710                 case opc_lrem:

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

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

   713                     break;

   714                 case opc_frem:

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

   716                     break;

   717                 case opc_drem:

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

   719                     break;

   720                 case opc_iand:

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

   722                     break;

   723                 case opc_land:

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

   725                     break;

   726                 case opc_ior:

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

   728                     break;

   729                 case opc_lor:

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

   731                     break;

   732                 case opc_ixor:

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

   734                     break;

   735                 case opc_lxor:

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

   737                     break;

   738                 case opc_ineg:

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

   740                     break;

   741                 case opc_lneg:

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

   743                     break;

   744                 case opc_fneg:

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

   746                     break;

   747                 case opc_dneg:

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

   749                     break;

   750                 case opc_ishl:

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

   752                     break;

   753                 case opc_lshl:

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

   755                     break;

   756                 case opc_ishr:

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

   758                     break;

   759                 case opc_lshr:

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

   761                     break;

   762                 case opc_iushr:

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

   764                     break;

   765                 case opc_lushr:

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

   767                     break;

   768                 case opc_iinc: {

   769                     ++i;

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

   771                                              : readUByte(byteCodes, i);

   772                     ++i;

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

   774                                             : byteCodes[i];

   775                     wide = false;

   776                     if (incrBy == 1) {

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

   778                     } else {

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

   780                              lmapper.getI(varIndx),

   781                              Integer.toString(incrBy));

   782                     }

   783                     break;

   784                 }

   785                 case opc_return:

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

   787                     break;

   788                 case opc_ireturn:

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

   790                     break;

   791                 case opc_lreturn:

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

   793                     break;

   794                 case opc_freturn:

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

   796                     break;

   797                 case opc_dreturn:

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

   799                     break;

   800                 case opc_areturn:

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

   802                     break;

   803                 case opc_i2l:

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

   805                     break;

   806                 case opc_i2f:

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

   808                     break;

   809                 case opc_i2d:

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

   811                     break;

   812                 case opc_l2i:

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

   814                     break;

   815                     // max int check?

   816                 case opc_l2f:

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

   818                     break;

   819                 case opc_l2d:

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

   821                     break;

   822                 case opc_f2d:

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

   824                          smapper.getF(0));

   825                     break;

   826                 case opc_d2f:

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

   828                          smapper.getD(0));

   829                     break;

   830                 case opc_f2i:

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

   832                          smapper.getF(0));

   833                     break;

   834                 case opc_f2l:

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

   836                          smapper.getF(0));

   837                     break;

   838                 case opc_d2i:

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

   840                          smapper.getD(0));

   841                     break;

   842                 case opc_d2l:

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

   844                     break;

   845                 case opc_i2b:

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

   847                     break;

   848                 case opc_i2c:

   849                     break;

   850                 case opc_i2s:

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

   852                     break;

   853                 case opc_aconst_null:

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

   855                     break;

   856                 case opc_iconst_m1:

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

   858                     break;

   859                 case opc_iconst_0:

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

   861                     break;

   862                 case opc_dconst_0:

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

   864                     break;

   865                 case opc_lconst_0:

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

   867                     break;

   868                 case opc_fconst_0:

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

   870                     break;

   871                 case opc_iconst_1:

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

   873                     break;

   874                 case opc_lconst_1:

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

   876                     break;

   877                 case opc_fconst_1:

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

   879                     break;

   880                 case opc_dconst_1:

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

   882                     break;

   883                 case opc_iconst_2:

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

   885                     break;

   886                 case opc_fconst_2:

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

   888                     break;

   889                 case opc_iconst_3:

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

   891                     break;

   892                 case opc_iconst_4:

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

   894                     break;

   895                 case opc_iconst_5:

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

   897                     break;

   898                 case opc_ldc: {

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

   900                     String v = encodeConstant(indx);

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

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

   903                     break;

   904                 }

   905                 case opc_ldc_w:

   906                 case opc_ldc2_w: {

   907                     int indx = readUShortArg(byteCodes, i);

   908                     i += 2;

   909                     String v = encodeConstant(indx);

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

   911                     if (type == VarType.LONG) {

   912                         final Long lv = new Long(v);

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

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

   915                         if (hi == 0) {

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

   917                         } else {

   918                             smapper.assign(this, VarType.LONG,

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

   920                                     Integer.toHexString(low) + ")"

   921                             );

   922                         }

   923                     } else {

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

   925                     }

   926                     break;

   927                 }

   928                 case opc_lcmp:

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

   930                     break;

   931                 case opc_fcmpl:

   932                 case opc_fcmpg:

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

   934                     break;

   935                 case opc_dcmpl:

   936                 case opc_dcmpg:

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

   938                     break;

   939                 case opc_if_acmpeq:

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

   941                                    "===", topMostLabel);

   942                     break;

   943                 case opc_if_acmpne:

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

   945                                    "!==", topMostLabel);

   946                     break;

   947                 case opc_if_icmpeq:

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

   949                                    "==", topMostLabel);

   950                     break;

   951                 case opc_ifeq: {

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

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

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

   955                     i += 2;

   956                     break;

   957                 }

   958                 case opc_ifne: {

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

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

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

   962                     i += 2;

   963                     break;

   964                 }

   965                 case opc_iflt: {

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

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

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

   969                     i += 2;

   970                     break;

   971                 }

   972                 case opc_ifle: {

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

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

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

   976                     i += 2;

   977                     break;

   978                 }

   979                 case opc_ifgt: {

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

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

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

   983                     i += 2;

   984                     break;

   985                 }

   986                 case opc_ifge: {

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

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

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

   990                     i += 2;

   991                     break;

   992                 }

   993                 case opc_ifnonnull: {

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

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

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

   997                     i += 2;

   998                     break;

   999                 }

  1000                 case opc_ifnull: {

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

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

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

  1004                     i += 2;

  1005                     break;

  1006                 }

  1007                 case opc_if_icmpne:

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

  1009                                    "!=", topMostLabel);

  1010                     break;

  1011                 case opc_if_icmplt:

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

  1013                                    "<", topMostLabel);

  1014                     break;

  1015                 case opc_if_icmple:

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

  1017                                    "<=", topMostLabel);

  1018                     break;

  1019                 case opc_if_icmpgt:

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

  1021                                    ">", topMostLabel);

  1022                     break;

  1023                 case opc_if_icmpge:

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

  1025                                    ">=", topMostLabel);

  1026                     break;

  1027                 case opc_goto: {

  1028                     smapper.flush(this);

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

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

  1031                     i += 2;

  1032                     break;

  1033                 }

  1034                 case opc_lookupswitch: {

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

  1036                     break;

  1037                 }

  1038                 case opc_tableswitch: {

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

  1040                     break;

  1041                 }

  1042                 case opc_invokeinterface: {

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

  1044                     break;

  1045                 }

  1046                 case opc_invokevirtual:

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

  1048                     break;

  1049                 case opc_invokespecial:

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

  1051                     break;

  1052                 case opc_invokestatic:

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

  1054                     break;

  1055                 case opc_invokedynamic: {

  1056                     int indx = readUShortArg(byteCodes, i);

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

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

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

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

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

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

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

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

  1065                     StringBuilder cnt = new StringBuilder();

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

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

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

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

  1070                     println("  mn   : " + mn);

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

  1072                     CPX2 nameAndType = jc.getCpoolEntry(c2.cpx2);

  1073                     String type = jc.StringValue(nameAndType.cpx2);

  1074                     String object = accessClass(mcn) + "(false)";

  1075                     if (mn.startsWith("cons_")) {

  1076                         object += ".constructor";

  1077                     }

  1078                     append("var metHan = ");

  1079                     append(accessStaticMethod(object, mn, mi));

  1080                     append('(');

  1081                     String lookup = accessClass("java_lang_invoke_MethodHandles") + "(false).findFor__Ljava_lang_invoke_MethodHandles$Lookup_2Ljava_lang_Class_2(CLS.$class)";

  1082                     append(lookup);

  1083                     append(", '").append(mi[1]).append("', ");

  1084                     String methodType = accessClass("java_lang_invoke_MethodType") + "(false).fromMethodDescriptorString__Ljava_lang_invoke_MethodType_2Ljava_lang_String_2Ljava_lang_ClassLoader_2(";

  1085                     append(methodType).append("'").append(type).append("', null)");

  1086 //                    if (numArguments > 0) {

  1087 //                        append(vars[0]);

  1088 //                        for (int j = 1; j < numArguments; ++j) {

  1089 //                            append(", ");

  1090 //                            append(vars[j]);

  1091 //                        }

  1092 //                    }

  1093                     append(");");

  1094                     emit(smapper, this, "throw 'Invoke dynamic: ' + @1 + ': ' + metHan;", "" + indx);

  1095                     i += 4;

  1096                     break;

  1097                 }

  1098                 case opc_new: {

  1099                     int indx = readUShortArg(byteCodes, i);

  1100                     String ci = jc.getClassName(indx);

  1101                     emit(smapper, this, "var @1 = new @2;",

  1102                          smapper.pushA(), accessClass(mangleClassName(ci)));

  1103                     addReference(ci);

  1104                     i += 2;

  1105                     break;

  1106                 }

  1107                 case opc_newarray:

  1108                     int atype = readUByte(byteCodes, ++i);

  1109                     generateNewArray(atype, smapper);

  1110                     break;

  1111                 case opc_anewarray: {

  1112                     int type = readUShortArg(byteCodes, i);

  1113                     i += 2;

  1114                     generateANewArray(type, smapper);

  1115                     break;

  1116                 }

  1117                 case opc_multianewarray: {

  1118                     int type = readUShortArg(byteCodes, i);

  1119                     i += 2;

  1120                     i = generateMultiANewArray(type, byteCodes, i, smapper);

  1121                     break;

  1122                 }

  1123                 case opc_arraylength:

  1124                     smapper.replace(this, VarType.INTEGER, "(@1).length", smapper.getA(0));

  1125                     break;

  1126                 case opc_lastore:

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

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

  1129                     break;

  1130                 case opc_fastore:

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

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

  1133                     break;

  1134                 case opc_dastore:

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

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

  1137                     break;

  1138                 case opc_aastore:

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

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

  1141                     break;

  1142                 case opc_iastore:

  1143                 case opc_bastore:

  1144                 case opc_castore:

  1145                 case opc_sastore:

  1146                     emit(smapper, this, "Array.at(@3, @2, @1);",

  1147                          smapper.popI(), smapper.popI(), smapper.popA());

  1148                     break;

  1149                 case opc_laload:

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

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

  1152                     break;

  1153                 case opc_faload:

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

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

  1156                     break;

  1157                 case opc_daload:

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

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

  1160                     break;

  1161                 case opc_aaload:

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

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

  1164                     break;

  1165                 case opc_iaload:

  1166                 case opc_baload:

  1167                 case opc_caload:

  1168                 case opc_saload:

  1169                     smapper.replace(this, VarType.INTEGER, "Array.at(@2, @1)",

  1170                          smapper.popI(), smapper.getA(0));

  1171                     break;

  1172                 case opc_pop:

  1173                 case opc_pop2:

  1174                     smapper.pop(1);

  1175                     debug("/* pop */");

  1176                     break;

  1177                 case opc_dup: {

  1178                     final Variable v = smapper.get(0);

  1179                     if (smapper.isDirty()) {

  1180                         emit(smapper, this, "var @1 = @2;", smapper.pushT(v.getType()), v);

  1181                     } else {

  1182                         smapper.assign(this, v.getType(), v);

  1183                     }

  1184                     break;

  1185                 }

  1186                 case opc_dup2: {

  1187                     final Variable vi1 = smapper.get(0);

  1189                     if (vi1.isCategory2()) {

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

  1191                              smapper.pushT(vi1.getType()), vi1);

  1192                     } else {

  1193                         final Variable vi2 = smapper.get(1);

  1194                         emit(smapper, this, "var @1 = @2, @3 = @4;",

  1195                              smapper.pushT(vi2.getType()), vi2,

  1196                              smapper.pushT(vi1.getType()), vi1);

  1197                     }

  1198                     break;

  1199                 }

  1200                 case opc_dup_x1: {

  1201                     final Variable vi1 = smapper.pop(this);

  1202                     final Variable vi2 = smapper.pop(this);

  1203                     final Variable vo3 = smapper.pushT(vi1.getType());

  1204                     final Variable vo2 = smapper.pushT(vi2.getType());

  1205                     final Variable vo1 = smapper.pushT(vi1.getType());

  1207                     emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6;",

  1208                          vo1, vi1, vo2, vi2, vo3, vo1);

  1209                     break;

  1210                 }

  1211                 case opc_dup2_x1: {

  1212                     final Variable vi1 = smapper.pop(this);

  1213                     final Variable vi2 = smapper.pop(this);

  1215                     if (vi1.isCategory2()) {

  1216                         final Variable vo3 = smapper.pushT(vi1.getType());

  1217                         final Variable vo2 = smapper.pushT(vi2.getType());

  1218                         final Variable vo1 = smapper.pushT(vi1.getType());

  1220                         emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6;",

  1221                              vo1, vi1, vo2, vi2, vo3, vo1);

  1222                     } else {

  1223                         final Variable vi3 = smapper.pop(this);

  1224                         final Variable vo5 = smapper.pushT(vi2.getType());

  1225                         final Variable vo4 = smapper.pushT(vi1.getType());

  1226                         final Variable vo3 = smapper.pushT(vi3.getType());

  1227                         final Variable vo2 = smapper.pushT(vi2.getType());

  1228                         final Variable vo1 = smapper.pushT(vi1.getType());

  1230                         emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6,",

  1231                              vo1, vi1, vo2, vi2, vo3, vi3);

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

  1233                              vo4, vo1, vo5, vo2);

  1234                     }

  1235                     break;

  1236                 }

  1237                 case opc_dup_x2: {

  1238                     final Variable vi1 = smapper.pop(this);

  1239                     final Variable vi2 = smapper.pop(this);

  1241                     if (vi2.isCategory2()) {

  1242                         final Variable vo3 = smapper.pushT(vi1.getType());

  1243                         final Variable vo2 = smapper.pushT(vi2.getType());

  1244                         final Variable vo1 = smapper.pushT(vi1.getType());

  1246                         emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6;",

  1247                              vo1, vi1, vo2, vi2, vo3, vo1);

  1248                     } else {

  1249                         final Variable vi3 = smapper.pop(this);

  1250                         final Variable vo4 = smapper.pushT(vi1.getType());

  1251                         final Variable vo3 = smapper.pushT(vi3.getType());

  1252                         final Variable vo2 = smapper.pushT(vi2.getType());

  1253                         final Variable vo1 = smapper.pushT(vi1.getType());

  1255                         emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6, @7 = @8;",

  1256                              vo1, vi1, vo2, vi2, vo3, vi3, vo4, vo1);

  1257                     }

  1258                     break;

  1259                 }

  1260                 case opc_dup2_x2: {

  1261                     final Variable vi1 = smapper.pop(this);

  1262                     final Variable vi2 = smapper.pop(this);

  1264                     if (vi1.isCategory2()) {

  1265                         if (vi2.isCategory2()) {

  1266                             final Variable vo3 = smapper.pushT(vi1.getType());

  1267                             final Variable vo2 = smapper.pushT(vi2.getType());

  1268                             final Variable vo1 = smapper.pushT(vi1.getType());

  1270                             emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6;",

  1271                                  vo1, vi1, vo2, vi2, vo3, vo1);

  1272                         } else {

  1273                             final Variable vi3 = smapper.pop(this);

  1274                             final Variable vo4 = smapper.pushT(vi1.getType());

  1275                             final Variable vo3 = smapper.pushT(vi3.getType());

  1276                             final Variable vo2 = smapper.pushT(vi2.getType());

  1277                             final Variable vo1 = smapper.pushT(vi1.getType());

  1279                             emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6, @7 = @8;",

  1280                                  vo1, vi1, vo2, vi2, vo3, vi3, vo4, vo1);

  1281                         }

  1282                     } else {

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

  1285                         if (vi3.isCategory2()) {

  1286                             final Variable vo5 = smapper.pushT(vi2.getType());

  1287                             final Variable vo4 = smapper.pushT(vi1.getType());

  1288                             final Variable vo3 = smapper.pushT(vi3.getType());

  1289                             final Variable vo2 = smapper.pushT(vi2.getType());

  1290                             final Variable vo1 = smapper.pushT(vi1.getType());

  1292                             emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6,",

  1293                                  vo1, vi1, vo2, vi2, vo3, vi3);

  1294                             emit(smapper, this, " @1 = @2, @3 = @4;",

  1295                                  vo4, vo1, vo5, vo2);

  1296                         } else {

  1297                             final Variable vi4 = smapper.pop(this);

  1298                             final Variable vo6 = smapper.pushT(vi2.getType());

  1299                             final Variable vo5 = smapper.pushT(vi1.getType());

  1300                             final Variable vo4 = smapper.pushT(vi4.getType());

  1301                             final Variable vo3 = smapper.pushT(vi3.getType());

  1302                             final Variable vo2 = smapper.pushT(vi2.getType());

  1303                             final Variable vo1 = smapper.pushT(vi1.getType());

  1305                             emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6, @7 = @8,",

  1306                                  vo1, vi1, vo2, vi2, vo3, vi3, vo4, vi4);

  1307                             emit(smapper, this, " @1 = @2, @3 = @4;",

  1308                                  vo5, vo1, vo6, vo2);

  1309                         }

  1310                     }

  1311                     break;

  1312                 }

  1313                 case opc_swap: {

  1314                     final Variable vi1 = smapper.get(0);

  1315                     final Variable vi2 = smapper.get(1);

  1317                     if (vi1.getType() == vi2.getType()) {

  1318                         final Variable tmp = smapper.pushT(vi1.getType());

  1320                         emit(smapper, this, "var @1 = @2, @2 = @3, @3 = @1;",

  1321                              tmp, vi1, vi2);

  1322                         smapper.pop(1);

  1323                     } else {

  1324                         smapper.pop(2);

  1325                         smapper.pushT(vi1.getType());

  1326                         smapper.pushT(vi2.getType());

  1327                     }

  1328                     break;

  1329                 }

  1330                 case opc_bipush:

  1331                     smapper.assign(this, VarType.INTEGER,

  1332                         "(" + Integer.toString(byteCodes[++i]) + ")");

  1333                     break;

  1334                 case opc_sipush:

  1335                     smapper.assign(this, VarType.INTEGER,

  1336                         "(" + Integer.toString(readShortArg(byteCodes, i)) + ")"

  1337                     );

  1338                     i += 2;

  1339                     break;

  1340                 case opc_getfield: {

  1341                     int indx = readUShortArg(byteCodes, i);

  1342                     String[] fi = jc.getFieldInfoName(indx);

  1343                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1344                     final String mangleClass = mangleClassName(fi[0]);

  1345                     final String mangleClassAccess = accessClass(mangleClass);

  1346                     smapper.replace(this, type, "@2.call(@1)",

  1347                          smapper.getA(0),

  1348                          accessField(mangleClassAccess + "(false)",

  1349                                      "_" + fi[1], fi)

  1350                     );

  1351                     i += 2;

  1352                     break;

  1353                 }

  1354                 case opc_putfield: {

  1355                     int indx = readUShortArg(byteCodes, i);

  1356                     String[] fi = jc.getFieldInfoName(indx);

  1357                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1358                     final String mangleClass = mangleClassName(fi[0]);

  1359                     final String mangleClassAccess = accessClass(mangleClass);

  1360                     emit(smapper, this, "@3.call(@2, @1);",

  1361                          smapper.popT(type),

  1362                          smapper.popA(),

  1363                          accessField(mangleClassAccess + "(false)",

  1364                                      "_" + fi[1], fi));

  1365                     i += 2;

  1366                     break;

  1367                 }

  1368                 case opc_getstatic: {

  1369                     int indx = readUShortArg(byteCodes, i);

  1370                     String[] fi = jc.getFieldInfoName(indx);

  1371                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1372                     String ac = accessClass(mangleClassName(fi[0]));

  1373                     String af = accessField(ac + "(false)", "_" + fi[1], fi);

  1374                     smapper.assign(this, type, af + "()");

  1375                     i += 2;

  1376                     addReference(fi[0]);

  1377                     break;

  1378                 }

  1379                 case opc_putstatic: {

  1380                     int indx = readUShortArg(byteCodes, i);

  1381                     String[] fi = jc.getFieldInfoName(indx);

  1382                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1383                     emit(smapper, this, "@1(false)._@2(@3);",

  1384                          accessClass(mangleClassName(fi[0])), fi[1],

  1385                          smapper.popT(type));

  1386                     i += 2;

  1387                     addReference(fi[0]);

  1388                     break;

  1389                 }

  1390                 case opc_checkcast: {

  1391                     int indx = readUShortArg(byteCodes, i);

  1392                     generateCheckcast(indx, smapper);

  1393                     i += 2;

  1394                     break;

  1395                 }

  1396                 case opc_instanceof: {

  1397                     int indx = readUShortArg(byteCodes, i);

  1398                     generateInstanceOf(indx, smapper);

  1399                     i += 2;

  1400                     break;

  1401                 }

  1402                 case opc_athrow: {

  1403                     final CharSequence v = smapper.popA();

  1404                     smapper.clear();

  1406                     emit(smapper, this, "{ var @1 = @2; throw @2; }",

  1407                          smapper.pushA(), v);

  1408                     break;

  1409                 }

  1411                 case opc_monitorenter: {

  1412                     debug("/* monitor enter */");

  1413                     smapper.popA();

  1414                     break;

  1415                 }

  1417                 case opc_monitorexit: {

  1418                     debug("/* monitor exit */");

  1419                     smapper.popA();

  1420                     break;

  1421                 }

  1423                 case opc_wide:

  1424                     wide = true;

  1425                     break;

  1427                 default: {

  1428                     wide = false;

  1429                     emit(smapper, this, "throw 'unknown bytecode @1';",

  1430                          Integer.toString(c));

  1431                 }

  1432             }

  1433             if (debug(" //")) {

  1434                 generateByteCodeComment(prev, i, byteCodes);

  1435             }

  1436             if (outChanged) {

  1437                 append("\n");

  1438             }

  1439         }

  1440         if (previousTrap != null) {

  1441             generateCatch(previousTrap, byteCodes.length, topMostLabel);

  1442         }

  1443         if (didBranches) {

  1444             append("\n    }\n");

  1445         }

  1446         while (openBraces-- > 0) {

  1447             append('}');

  1448         }

  1449         if (obj) {

  1450             append("\n}});");

  1451         } else {

  1452             append("\n};");

  1453         }

  1454     }

  1456     private int generateIf(StackMapper mapper, byte[] byteCodes,

  1457         int i, final CharSequence v2, final CharSequence v1,

  1458         final String test, int topMostLabel

  1459     ) throws IOException {

  1460         mapper.flush(this);

  1461         int indx = i + readShortArg(byteCodes, i);

  1462         append("if ((").append(v1)

  1463            .append(") ").append(test).append(" (")

  1464            .append(v2).append(")) ");

  1465         goTo(this, i, indx, topMostLabel);

  1466         return i + 2;

  1467     }

  1469     private int readInt4(byte[] byteCodes, int offset) {

  1470         final int d = byteCodes[offset + 0] << 24;

  1471         final int c = byteCodes[offset + 1] << 16;

  1472         final int b = byteCodes[offset + 2] << 8;

  1473         final int a = byteCodes[offset + 3];

  1474         return (d & 0xff000000) | (c & 0xff0000) | (b & 0xff00) | (a & 0xff);

  1475     }

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

  1477         return byteCodes[offset] & 0xff;

  1478     }

  1480     private static int readUShort(byte[] byteCodes, int offset) {

  1481         return ((byteCodes[offset] & 0xff) << 8)

  1482                     | (byteCodes[offset + 1] & 0xff);

  1483     }

  1484     private static int readUShortArg(byte[] byteCodes, int offsetInstruction) {

  1485         return readUShort(byteCodes, offsetInstruction + 1);

  1486     }

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

  1489         int signed = byteCodes[offset];

  1490         byte b0 = (byte)signed;

  1491         return (b0 << 8) | (byteCodes[offset + 1] & 0xff);

  1492     }

  1493     private static int readShortArg(byte[] byteCodes, int offsetInstruction) {

  1494         return readShort(byteCodes, offsetInstruction + 1);

  1495     }

  1497     private static void countArgs(String descriptor, char[] returnType, StringBuilder sig, StringBuilder cnt) {

  1498         int i = 0;

  1499         Boolean count = null;

  1500         boolean array = false;

  1501         sig.append("__");

  1502         int firstPos = sig.length();

  1503         while (i < descriptor.length()) {

  1504             char ch = descriptor.charAt(i++);

  1505             switch (ch) {

  1506                 case '(':

  1507                     count = true;

  1508                     continue;

  1509                 case ')':

  1510                     count = false;

  1511                     continue;

  1512                 case 'B':

  1513                 case 'C':

  1514                 case 'D':

  1515                 case 'F':

  1516                 case 'I':

  1517                 case 'J':

  1518                 case 'S':

  1519                 case 'Z':

  1520                     if (count) {

  1521                         if (array) {

  1522                             sig.append("_3");

  1523                         }

  1524                         sig.append(ch);

  1525                         if (ch == 'J' || ch == 'D') {

  1526                             cnt.append('1');

  1527                         } else {

  1528                             cnt.append('0');

  1529                         }

  1530                     } else {

  1531                         sig.insert(firstPos, ch);

  1532                         if (array) {

  1533                             returnType[0] = '[';

  1534                             sig.insert(firstPos, "_3");

  1535                         } else {

  1536                             returnType[0] = ch;

  1537                         }

  1538                     }

  1539                     array = false;

  1540                     continue;

  1541                 case 'V':

  1542                     assert !count;

  1543                     returnType[0] = 'V';

  1544                     sig.insert(firstPos, 'V');

  1545                     continue;

  1546                 case 'L':

  1547                     int next = descriptor.indexOf(';', i);

  1548                     String realSig = mangleSig(descriptor, i - 1, next + 1);

  1549                     if (count) {

  1550                         if (array) {

  1551                             sig.append("_3");

  1552                         }

  1553                         sig.append(realSig);

  1554                         cnt.append('0');

  1555                     } else {

  1556                         sig.insert(firstPos, realSig);

  1557                         if (array) {

  1558                             sig.insert(firstPos, "_3");

  1559                         }

  1560                         returnType[0] = 'L';

  1561                     }

  1562                     i = next + 1;

  1563                     array = false;

  1564                     continue;

  1565                 case '[':

  1566                     array = true;

  1567                     continue;

  1568                 default:

  1569                     throw new IllegalStateException("Invalid char: " + ch);

  1570             }

  1571         }

  1572     }

  1574     static String mangleSig(String sig) {

  1575         return mangleSig(sig, 0, sig.length());

  1576     }

  1578     private static String mangleMethodName(String name) {

  1579         StringBuilder sb = new StringBuilder(name.length() * 2);

  1580         int last = name.length();

  1581         for (int i = 0; i < last; i++) {

  1582             final char ch = name.charAt(i);

  1583             switch (ch) {

  1584                 case '_': sb.append("_1"); break;

  1585                 default: sb.append(ch); break;

  1586             }

  1587         }

  1588         return sb.toString();

  1589     }

  1590     private static String mangleSig(String txt, int first, int last) {

  1591         StringBuilder sb = new StringBuilder((last - first) * 2);

  1592         for (int i = first; i < last; i++) {

  1593             final char ch = txt.charAt(i);

  1594             switch (ch) {

  1595                 case '/': sb.append('_'); break;

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

  1597                 case ';': sb.append("_2"); break;

  1598                 case '[': sb.append("_3"); break;

  1599                 default:

  1600                     if (Character.isJavaIdentifierPart(ch)) {

  1601                         sb.append(ch);

  1602                     } else {

  1603                         sb.append("_0");

  1604                         String hex = Integer.toHexString(ch).toLowerCase();

  1605                         for (int m = hex.length(); m < 4; m++) {

  1606                             sb.append("0");

  1607                         }

  1608                         sb.append(hex);

  1609                     }

  1610                 break;

  1611             }

  1612         }

  1613         return sb.toString();

  1614     }

  1616     private static String mangleClassName(String name) {

  1617         return mangleSig(name);

  1618     }

  1620     private static String findMethodName(MethodData m, StringBuilder cnt) {

  1621         StringBuilder name = new StringBuilder();

  1622         if ("<init>".equals(m.getName())) { // NOI18N

  1623             name.append("cons"); // NOI18N

  1624         } else if ("<clinit>".equals(m.getName())) { // NOI18N

  1625             name.append("class"); // NOI18N

  1626         } else {

  1627             name.append(mangleMethodName(m.getName()));

  1628         }

  1630         countArgs(m.getInternalSig(), new char[1], name, cnt);

  1631         return name.toString();

  1632     }

  1634     static String findMethodName(String[] mi, StringBuilder cnt, char[] returnType) {

  1635         StringBuilder name = new StringBuilder();

  1636         String descr = mi[2];//mi.getDescriptor();

  1637         String nm= mi[1];

  1638         if ("<init>".equals(nm)) { // NOI18N

  1639             name.append("cons"); // NOI18N

  1640         } else {

  1641             name.append(mangleMethodName(nm));

  1642         }

  1643         countArgs(descr, returnType, name, cnt);

  1644         return name.toString();

  1645     }

  1647     private int invokeStaticMethod(byte[] byteCodes, int i, final StackMapper mapper, boolean isStatic)

  1648     throws IOException {

  1649         int methodIndex = readUShortArg(byteCodes, i);

  1650         String[] mi = jc.getFieldInfoName(methodIndex);

  1651         char[] returnType = { 'V' };

  1652         StringBuilder cnt = new StringBuilder();

  1653         String mn = findMethodName(mi, cnt, returnType);

  1655         final int numArguments = isStatic ? cnt.length() : cnt.length() + 1;

  1656         final CharSequence[] vars = new CharSequence[numArguments];

  1658         for (int j = numArguments - 1; j >= 0; --j) {

  1659             vars[j] = mapper.popValue();

  1660         }

  1662         if (returnType[0] != 'V') {

  1663             mapper.flush(this);

  1664             append("var ")

  1665                .append(mapper.pushT(VarType.fromFieldType(returnType[0])))

  1666                .append(" = ");

  1667         }

  1669         final String in = mi[0];

  1670         String mcn;

  1671         if (callbacks && in.equals("org/apidesign/html/boot/spi/Fn")) {

  1672             mcn = "java_lang_Class";

  1673         } else {

  1674             mcn = mangleClassName(in);

  1675         }

  1676         String object = accessClass(mcn) + "(false)";

  1677         if (mn.startsWith("cons_")) {

  1678             object += ".constructor";

  1679         }

  1680         append(accessStaticMethod(object, mn, mi));

  1681         if (isStatic) {

  1682             append('(');

  1683         } else {

  1684             append(".call(");

  1685         }

  1686         if (numArguments > 0) {

  1687             append(vars[0]);

  1688             for (int j = 1; j < numArguments; ++j) {

  1689                 append(", ");

  1690                 append(vars[j]);

  1691             }

  1692         }

  1693         append(");");

  1694         i += 2;

  1695         addReference(in);

  1696         return i;

  1697     }

  1698     private int invokeVirtualMethod(byte[] byteCodes, int i, final StackMapper mapper)

  1699     throws IOException {

  1700         int methodIndex = readUShortArg(byteCodes, i);

  1701         String[] mi = jc.getFieldInfoName(methodIndex);

  1702         char[] returnType = { 'V' };

  1703         StringBuilder cnt = new StringBuilder();

  1704         String mn = findMethodName(mi, cnt, returnType);

  1706         final int numArguments = cnt.length() + 1;

  1707         final CharSequence[] vars = new CharSequence[numArguments];

  1709         for (int j = numArguments - 1; j >= 0; --j) {

  1710             vars[j] = mapper.popValue();

  1711         }

  1713         if (returnType[0] != 'V') {

  1714             append("var ")

  1715                .append(mapper.pushT(VarType.fromFieldType(returnType[0])))

  1716                .append(" = ");

  1717         }

  1719         append(accessVirtualMethod(vars[0].toString(), mn, mi, numArguments));

  1720         String sep = "";

  1721         for (int j = 1; j < numArguments; ++j) {

  1722             append(sep);

  1723             append(vars[j]);

  1724             sep = ", ";

  1725         }

  1726         append(");");

  1727         i += 2;

  1728         return i;

  1729     }

  1731     private void addReference(String cn) throws IOException {

  1732         if (requireReference(cn)) {

  1733             debug(" /* needs " + cn + " */");

  1734         }

  1735     }

  1737     private void outType(String d, StringBuilder out) {

  1738         int arr = 0;

  1739         while (d.charAt(0) == '[') {

  1740             out.append('A');

  1741             d = d.substring(1);

  1742         }

  1743         if (d.charAt(0) == 'L') {

  1744             assert d.charAt(d.length() - 1) == ';';

  1745             out.append(d.replace('/', '_').substring(0, d.length() - 1));

  1746         } else {

  1747             out.append(d);

  1748         }

  1749     }

  1751     private String encodeConstant(int entryIndex) throws IOException {

  1752         String[] classRef = { null };

  1753         String s = jc.stringValue(entryIndex, classRef);

  1754         if (classRef[0] != null) {

  1755             if (classRef[0].startsWith("[")) {

  1756                 s = accessClass("java_lang_Class") + "(false)['forName__Ljava_lang_Class_2Ljava_lang_String_2']('" + classRef[0] + "')";

  1757             } else {

  1758                 addReference(classRef[0]);

  1759                 s = accessClass(mangleClassName(s)) + "(false).constructor.$class";

  1760             }

  1761         }

  1762         return s;

  1763     }

  1765     private String javaScriptBody(String destObject, MethodData m, boolean isStatic) throws IOException {

  1766         byte[] arr = m.findAnnotationData(true);

  1767         if (arr == null) {

  1768             return null;

  1769         }

  1770         final String jvmType = "Lorg/apidesign/bck2brwsr/core/JavaScriptBody;";

  1771         final String htmlType = "Lnet/java/html/js/JavaScriptBody;";

  1772         class P extends AnnotationParser {

  1773             public P() {

  1774                 super(false, true);

  1775             }

  1777             int cnt;

  1778             String[] args = new String[30];

  1779             String body;

  1780             boolean javacall;

  1781             boolean html4j;

  1783             @Override

  1784             protected void visitAttr(String type, String attr, String at, String value) {

  1785                 if (type.equals(jvmType)) {

  1786                     if ("body".equals(attr)) {

  1787                         body = value;

  1788                     } else if ("args".equals(attr)) {

  1789                         args[cnt++] = value;

  1790                     } else {

  1791                         throw new IllegalArgumentException(attr);

  1792                     }

  1793                 }

  1794                 if (type.equals(htmlType)) {

  1795                     html4j = true;

  1796                     if ("body".equals(attr)) {

  1797                         body = value;

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

  1799                         args[cnt++] = value;

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

  1801                         javacall = "1".equals(value);

  1802                     } else if ("wait4js".equals(attr)) {

  1803                         // ignore, we always invoke synchronously

  1804                     } else {

  1805                         throw new IllegalArgumentException(attr);

  1806                     }

  1807                 }

  1808             }

  1809         }

  1810         P p = new P();

  1811         p.parse(arr, jc);

  1812         if (p.body == null) {

  1813             return null;

  1814         }

  1815         StringBuilder cnt = new StringBuilder();

  1816         final String mn = findMethodName(m, cnt);

  1817         append(destObject).append(".").append(mn);

  1818         append(" = function(");

  1819         String space = "";

  1820         int index = 0;

  1821         StringBuilder toValue = new StringBuilder();

  1822         for (int i = 0; i < cnt.length(); i++) {

  1823             append(space);

  1824             space = outputArg(this, p.args, index);

  1825             if (p.html4j && space.length() > 0) {

  1826                 toValue.append("\n  ").append(p.args[index]).append(" = ")

  1827                     .append(accessClass("java_lang_Class")).append("(false).toJS(").

  1828                     append(p.args[index]).append(");");

  1829             }

  1830             index++;

  1831         }

  1832         append(") {").append("\n");

  1833         append(toValue.toString());

  1834         if (p.javacall) {

  1835             int lastSlash = jc.getClassName().lastIndexOf('/');

  1836             final String pkg = jc.getClassName().substring(0, lastSlash);

  1837             append(mangleCallbacks(pkg, p.body));

  1838             requireReference(pkg + "/$JsCallbacks$");

  1839         } else {

  1840             append(p.body);

  1841         }

  1842         append("\n}\n");

  1843         return mn;

  1844     }

  1846     private static CharSequence mangleCallbacks(String pkgName, String body) {

  1847         StringBuilder sb = new StringBuilder();

  1848         int pos = 0;

  1849         for (;;) {

  1850             int next = body.indexOf(".@", pos);

  1851             if (next == -1) {

  1852                 sb.append(body.substring(pos));

  1853                 body = sb.toString();

  1854                 break;

  1855             }

  1856             int ident = next;

  1857             while (ident > 0) {

  1858                 if (!Character.isJavaIdentifierPart(body.charAt(--ident))) {

  1859                     ident++;

  1860                     break;

  1861                 }

  1862             }

  1863             String refId = body.substring(ident, next);

  1865             sb.append(body.substring(pos, ident));

  1867             int sigBeg = body.indexOf('(', next);

  1868             int sigEnd = body.indexOf(')', sigBeg);

  1869             int colon4 = body.indexOf("::", next);

  1870             if (sigBeg == -1 || sigEnd == -1 || colon4 == -1) {

  1871                 throw new IllegalStateException("Malformed body " + body);

  1872             }

  1873             String fqn = body.substring(next + 2, colon4);

  1874             String method = body.substring(colon4 + 2, sigBeg);

  1875             String params = body.substring(sigBeg, sigEnd + 1);

  1877             int paramBeg = body.indexOf('(', sigEnd + 1);

  1879             sb.append("vm.").append(pkgName.replace('/', '_')).append("_$JsCallbacks$(false)._VM().");

  1880             sb.append(mangleJsCallbacks(fqn, method, params, false));

  1881             sb.append("(").append(refId);

  1882             if (body.charAt(paramBeg + 1) != ')') {

  1883                 sb.append(",");

  1884             }

  1885             pos = paramBeg + 1;

  1886         }

  1887         sb = null;

  1888         pos = 0;

  1889         for (;;) {

  1890             int next = body.indexOf("@", pos);

  1891             if (next == -1) {

  1892                 if (sb == null) {

  1893                     return body;

  1894                 }

  1895                 sb.append(body.substring(pos));

  1896                 return sb;

  1897             }

  1898             if (sb == null) {

  1899                 sb = new StringBuilder();

  1900             }

  1902             sb.append(body.substring(pos, next));

  1904             int sigBeg = body.indexOf('(', next);

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

  1906             int colon4 = body.indexOf("::", next);

  1907             if (sigBeg == -1 || sigEnd == -1 || colon4 == -1) {

  1908                 throw new IllegalStateException("Malformed body " + body);

  1909             }

  1910             String fqn = body.substring(next + 1, colon4);

  1911             String method = body.substring(colon4 + 2, sigBeg);

  1912             String params = body.substring(sigBeg, sigEnd + 1);

  1914             int paramBeg = body.indexOf('(', sigEnd + 1);

  1916             sb.append("vm.").append(pkgName.replace('/', '_')).append("_$JsCallbacks$(false)._VM().");

  1917             sb.append(mangleJsCallbacks(fqn, method, params, true));

  1918             sb.append("(");

  1919             pos = paramBeg + 1;

  1920         }

  1921     }

  1923     static String mangleJsCallbacks(String fqn, String method, String params, boolean isStatic) {

  1924         if (params.startsWith("(")) {

  1925             params = params.substring(1);

  1926         }

  1927         if (params.endsWith(")")) {

  1928             params = params.substring(0, params.length() - 1);

  1929         }

  1930         StringBuilder sb = new StringBuilder();

  1931         final String fqnu = fqn.replace('.', '_');

  1932         final String rfqn = mangleClassName(fqnu);

  1933         final String rm = mangleMethodName(method);

  1934         final String srp;

  1935         {

  1936             StringBuilder pb = new StringBuilder();

  1937             int len = params.length();

  1938             int indx = 0;

  1939             while (indx < len) {

  1940                 char ch = params.charAt(indx);

  1941                 if (ch == '[' || ch == 'L') {

  1942                     pb.append("Ljava/lang/Object;");

  1943                     indx = params.indexOf(';', indx) + 1;

  1944                 } else {

  1945                     pb.append(ch);

  1946                     indx++;

  1947                 }

  1948             }

  1949             srp = mangleSig(pb.toString());

  1950         }

  1951         final String rp = mangleSig(params);

  1952         final String mrp = mangleMethodName(rp);

  1953         sb.append(rfqn).append("$").append(rm).

  1954             append('$').append(mrp).append("__Ljava_lang_Object_2");

  1955         if (!isStatic) {

  1956             sb.append('L').append(fqnu).append("_2");

  1957         }

  1958         sb.append(srp);

  1959         return sb.toString();

  1960     }

  1962     private static String className(ClassData jc) {

  1963         //return jc.getName().getInternalName().replace('/', '_');

  1964         return mangleClassName(jc.getClassName());

  1965     }

  1967     private static String[] findAnnotation(

  1968         byte[] arr, ClassData cd, final String className,

  1969         final String... attrNames

  1970     ) throws IOException {

  1971         if (arr == null) {

  1972             return null;

  1973         }

  1974         final String[] values = new String[attrNames.length];

  1975         final boolean[] found = { false };

  1976         final String jvmType = "L" + className.replace('.', '/') + ";";

  1977         AnnotationParser ap = new AnnotationParser(false, true) {

  1978             @Override

  1979             protected void visitAttr(String type, String attr, String at, String value) {

  1980                 if (type.equals(jvmType)) {

  1981                     found[0] = true;

  1982                     for (int i = 0; i < attrNames.length; i++) {

  1983                         if (attrNames[i].equals(attr)) {

  1984                             values[i] = value;

  1985                         }

  1986                     }

  1987                 }

  1988             }

  1990         };

  1991         ap.parse(arr, cd);

  1992         return found[0] ? values : null;

  1993     }

  1995     private CharSequence initField(FieldData v) {

  1996         final String is = v.getInternalSig();

  1997         if (is.length() == 1) {

  1998             switch (is.charAt(0)) {

  1999                 case 'S':

  2000                 case 'J':

  2001                 case 'B':

  2002                 case 'Z':

  2003                 case 'C':

  2004                 case 'I': return " = 0;";

  2005                 case 'F':

  2006                 case 'D': return " = 0.0;";

  2007                 default:

  2008                     throw new IllegalStateException(is);

  2009             }

  2010         }

  2011         return " = null;";

  2012     }

  2014     private void generateAnno(ClassData cd, byte[] data) throws IOException {

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

  2016             int[] cnt = new int[32];

  2017             int depth;

  2019             @Override

  2020             protected void visitAnnotationStart(String attrType, boolean top) throws IOException {

  2021                 final String slashType = attrType.substring(1, attrType.length() - 1);

  2022                 requireReference(slashType);

  2024                 if (cnt[depth]++ > 0) {

  2025                     append(",");

  2026                 }

  2027                 if (top) {

  2028                     append('"').append(attrType).append("\" : ");

  2029                 }

  2030                 append("{\n");

  2031                 cnt[++depth] = 0;

  2032             }

  2034             @Override

  2035             protected void visitAnnotationEnd(String type, boolean top) throws IOException {

  2036                 append("\n}\n");

  2037                 depth--;

  2038             }

  2040             @Override

  2041             protected void visitValueStart(String attrName, char type) throws IOException {

  2042                 if (cnt[depth]++ > 0) {

  2043                     append(",\n");

  2044                 }

  2045                 cnt[++depth] = 0;

  2046                 if (attrName != null) {

  2047                     append('"').append(attrName).append("\" : ");

  2048                 }

  2049                 if (type == '[') {

  2050                     append("[");

  2051                 }

  2052             }

  2054             @Override

  2055             protected void visitValueEnd(String attrName, char type) throws IOException {

  2056                 if (type == '[') {

  2057                     append("]");

  2058                 }

  2059                 depth--;

  2060             }

  2062             @Override

  2063             protected void visitAttr(String type, String attr, String attrType, String value)

  2064             throws IOException {

  2065                 if (attr == null && value == null) {

  2066                     return;

  2067                 }

  2068                 append(value);

  2069             }

  2071             @Override

  2072             protected void visitEnumAttr(String type, String attr, String attrType, String value)

  2073             throws IOException {

  2074                 final String slashType = attrType.substring(1, attrType.length() - 1);

  2075                 requireReference(slashType);

  2077                 final String cn = mangleClassName(slashType);

  2078                 append(accessClass(cn))

  2079                    .append("(false)['valueOf__L").

  2080                     append(cn).

  2081                     append("_2Ljava_lang_String_2']('").

  2082                     append(value).

  2083                     append("')");

  2084             }

  2085         };

  2086         ap.parse(data, cd);

  2087     }

  2089     private static String outputArg(Appendable out, String[] args, int indx) throws IOException {

  2090         final String name = args[indx];

  2091         if (name == null) {

  2092             return "";

  2093         }

  2094         if (name.contains(",")) {

  2095             throw new IOException("Wrong parameter with ',': " + name);

  2096         }

  2097         out.append(name);

  2098         return ",";

  2099     }

  2101     final void emitNoFlush(

  2102         StackMapper sm,

  2103         final String format, final CharSequence... params

  2104     ) throws IOException {

  2105         emitImpl(this, format, params);

  2106     }

  2107     static final void emit(

  2108         StackMapper sm,

  2109         final Appendable out,

  2110         final String format, final CharSequence... params

  2111     ) throws IOException {

  2112         sm.flush(out);

  2113         emitImpl(out, format, params);

  2114     }

  2115     static void emitImpl(final Appendable out,

  2116                              final String format,

  2117                              final CharSequence... params) throws IOException {

  2118         final int length = format.length();

  2120         int processed = 0;

  2121         int paramOffset = format.indexOf('@');

  2122         while ((paramOffset != -1) && (paramOffset < (length - 1))) {

  2123             final char paramChar = format.charAt(paramOffset + 1);

  2124             if ((paramChar >= '1') && (paramChar <= '9')) {

  2125                 final int paramIndex = paramChar - '0' - 1;

  2127                 out.append(format, processed, paramOffset);

  2128                 out.append(params[paramIndex]);

  2130                 ++paramOffset;

  2131                 processed = paramOffset + 1;

  2132             }

  2134             paramOffset = format.indexOf('@', paramOffset + 1);

  2135         }

  2137         out.append(format, processed, length);

  2138     }

  2140     private void generateCatch(TrapData[] traps, int current, int topMostLabel) throws IOException {

  2141         append("} catch (e) {\n");

  2142         int finallyPC = -1;

  2143         for (TrapData e : traps) {

  2144             if (e == null) {

  2145                 break;

  2146             }

  2147             if (e.catch_cpx != 0) { //not finally

  2148                 final String classInternalName = jc.getClassName(e.catch_cpx);

  2149                 addReference(classInternalName);

  2150                 append("e = vm.java_lang_Class(false).bck2BrwsrThrwrbl(e);");

  2151                 append("if (e['$instOf_" + classInternalName.replace('/', '_') + "']) {");

  2152                 append("var stA0 = e;");

  2153                 goTo(this, current, e.handler_pc, topMostLabel);

  2154                 append("}\n");

  2155             } else {

  2156                 finallyPC = e.handler_pc;

  2157             }

  2158         }

  2159         if (finallyPC == -1) {

  2160             append("throw e;");

  2161         } else {

  2162             append("var stA0 = e;");

  2163             goTo(this, current, finallyPC, topMostLabel);

  2164         }

  2165         append("\n}");

  2166     }

  2168     private static void goTo(Appendable out, int current, int to, int canBack) throws IOException {

  2169         if (to < current) {

  2170             if (canBack < to) {

  2171                 out.append("{ gt = 0; continue X_" + to + "; }");

  2172             } else {

  2173                 out.append("{ gt = " + to + "; continue X_0; }");

  2174             }

  2175         } else {

  2176             out.append("{ gt = " + to + "; break IF; }");

  2177         }

  2178     }

  2180     private static void emitIf(

  2181         StackMapper sm,

  2182         Appendable out, String pattern,

  2183         CharSequence param,

  2184         int current, int to, int canBack

  2185     ) throws IOException {

  2186         sm.flush(out);

  2187         emitImpl(out, pattern, param);

  2188         goTo(out, current, to, canBack);

  2189     }

  2191     private void generateNewArray(int atype, final StackMapper smapper) throws IOException, IllegalStateException {

  2192         String jvmType;

  2193         switch (atype) {

  2194             case 4: jvmType = "[Z"; break;

  2195             case 5: jvmType = "[C"; break;

  2196             case 6: jvmType = "[F"; break;

  2197             case 7: jvmType = "[D"; break;

  2198             case 8: jvmType = "[B"; break;

  2199             case 9: jvmType = "[S"; break;

  2200             case 10: jvmType = "[I"; break;

  2201             case 11: jvmType = "[J"; break;

  2202             default: throw new IllegalStateException("Array type: " + atype);

  2203         }

  2204         emit(smapper, this,

  2205             "var @2 = Array.prototype['newArray__Ljava_lang_Object_2ZLjava_lang_String_2Ljava_lang_Object_2I'](true, '@3', null, @1);",

  2206              smapper.popI(), smapper.pushA(), jvmType);

  2207     }

  2209     private void generateANewArray(int type, final StackMapper smapper) throws IOException {

  2210         String typeName = jc.getClassName(type);

  2211         String ref = "null";

  2212         if (typeName.startsWith("[")) {

  2213             typeName = "'[" + typeName + "'";

  2214         } else {

  2215             ref = "vm." + mangleClassName(typeName);

  2216             typeName = "'[L" + typeName + ";'";

  2217         }

  2218         emit(smapper, this,

  2219             "var @2 = Array.prototype['newArray__Ljava_lang_Object_2ZLjava_lang_String_2Ljava_lang_Object_2I'](false, @3, @4, @1);",

  2220              smapper.popI(), smapper.pushA(), typeName, ref);

  2221     }

  2223     private int generateMultiANewArray(int type, final byte[] byteCodes, int i, final StackMapper smapper) throws IOException {

  2224         String typeName = jc.getClassName(type);

  2225         int dim = readUByte(byteCodes, ++i);

  2226         StringBuilder dims = new StringBuilder();

  2227         dims.append('[');

  2228         for (int d = 0; d < dim; d++) {

  2229             if (d != 0) {

  2230                 dims.insert(1, ",");

  2231             }

  2232             dims.insert(1, smapper.popI());

  2233         }

  2234         dims.append(']');

  2235         String fn = "null";

  2236         if (typeName.charAt(dim) == 'L') {

  2237             fn = "vm." + mangleClassName(typeName.substring(dim + 1, typeName.length() - 1));

  2238         }

  2239         emit(smapper, this,

  2240             "var @2 = Array.prototype['multiNewArray__Ljava_lang_Object_2Ljava_lang_String_2_3ILjava_lang_Object_2']('@3', @1, @4);",

  2241              dims.toString(), smapper.pushA(), typeName, fn

  2242         );

  2243         return i;

  2244     }

  2246     private int generateTableSwitch(int i, final byte[] byteCodes, final StackMapper smapper, int topMostLabel) throws IOException {

  2247         int table = i / 4 * 4 + 4;

  2248         int dflt = i + readInt4(byteCodes, table);

  2249         table += 4;

  2250         int low = readInt4(byteCodes, table);

  2251         table += 4;

  2252         int high = readInt4(byteCodes, table);

  2253         table += 4;

  2254         final CharSequence swVar = smapper.popValue();

  2255         smapper.flush(this);

  2256         append("switch (").append(swVar).append(") {\n");

  2257         while (low <= high) {

  2258             int offset = i + readInt4(byteCodes, table);

  2259             table += 4;

  2260             append("  case " + low).append(":"); goTo(this, i, offset, topMostLabel); append('\n');

  2261             low++;

  2262         }

  2263         append("  default: ");

  2264         goTo(this, i, dflt, topMostLabel);

  2265         append("\n}");

  2266         i = table - 1;

  2267         return i;

  2268     }

  2270     private int generateLookupSwitch(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 n = readInt4(byteCodes, table);

  2275         table += 4;

  2276         final CharSequence swVar = smapper.popValue();

  2277         smapper.flush(this);

  2278         append("switch (").append(swVar).append(") {\n");

  2279         while (n-- > 0) {

  2280             int cnstnt = readInt4(byteCodes, table);

  2281             table += 4;

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

  2283             table += 4;

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

  2285         }

  2286         append("  default: ");

  2287         goTo(this, i, dflt, topMostLabel);

  2288         append("\n}");

  2289         i = table - 1;

  2290         return i;

  2291     }

  2293     private void generateInstanceOf(int indx, final StackMapper smapper) throws IOException {

  2294         String type = jc.getClassName(indx);

  2295         if (!type.startsWith("[")) {

  2296             emit(smapper, this,

  2297                     "var @2 = @1 != null && @1['$instOf_@3'] ? 1 : 0;",

  2298                  smapper.popA(), smapper.pushI(),

  2299                  type.replace('/', '_'));

  2300         } else {

  2301             int cnt = 0;

  2302             while (type.charAt(cnt) == '[') {

  2303                 cnt++;

  2304             }

  2305             if (type.charAt(cnt) == 'L') {

  2306                 type = "vm." + mangleClassName(type.substring(cnt + 1, type.length() - 1));

  2307                 emit(smapper, this,

  2308                     "var @2 = Array.prototype['isInstance__ZLjava_lang_Object_2ILjava_lang_Object_2'](@1, @4, @3);",

  2309                     smapper.popA(), smapper.pushI(),

  2310                     type, "" + cnt

  2311                 );

  2312             } else {

  2313                 emit(smapper, this,

  2314                     "var @2 = Array.prototype['isInstance__ZLjava_lang_Object_2Ljava_lang_String_2'](@1, '@3');",

  2315                     smapper.popA(), smapper.pushI(), type

  2316                 );

  2317             }

  2318         }

  2319     }

  2321     private void generateCheckcast(int indx, final StackMapper smapper) throws IOException {

  2322         String type = jc.getClassName(indx);

  2323         if (!type.startsWith("[")) {

  2324             emitNoFlush(smapper,

  2325                  "if (@1 !== null && !@1['$instOf_@2']) throw vm.java_lang_ClassCastException(true);",

  2326                  smapper.getT(0, VarType.REFERENCE, false), type.replace('/', '_'));

  2327         } else {

  2328             int cnt = 0;

  2329             while (type.charAt(cnt) == '[') {

  2330                 cnt++;

  2331             }

  2332             if (type.charAt(cnt) == 'L') {

  2333                 type = "vm." + mangleClassName(type.substring(cnt + 1, type.length() - 1));

  2334                 emitNoFlush(smapper,

  2335                     "if (@1 !== null && !Array.prototype['isInstance__ZLjava_lang_Object_2ILjava_lang_Object_2'](@1, @3, @2)) throw vm.java_lang_ClassCastException(true);",

  2336                      smapper.getT(0, VarType.REFERENCE, false), type, "" + cnt

  2337                 );

  2338             } else {

  2339                 emitNoFlush(smapper,

  2340                     "if (@1 !== null && !Array.prototype['isInstance__ZLjava_lang_Object_2Ljava_lang_String_2'](@1, '@2')) throw vm.java_lang_ClassCastException(true);",

  2341                      smapper.getT(0, VarType.REFERENCE, false), type

  2342                 );

  2343             }

  2344         }

  2345     }

  2347     private void generateByteCodeComment(int prev, int i, final byte[] byteCodes) throws IOException {

  2348         for (int j = prev; j <= i; j++) {

  2349             append(" ");

  2350             final int cc = readUByte(byteCodes, j);

  2351             append(Integer.toString(cc));

  2352         }

  2353     }

  2355     @JavaScriptBody(args = "msg", body = "")

  2356     private static void println(String msg) {

  2357         System.err.println(msg);

  2358     }

  2359 }

author	Jaroslav Tulach <jaroslav.tulach@apidesign.org>
	Mon, 11 Aug 2014 17:52:23 +0200
branch	jdk8
changeset 1661	6d5075e5ceac
parent 1660	2f22f2a2175d
child 1666	4e349118658f
permissions	-rw-r--r--