hg/bck2brwsr: rt/vm/src/main/java/org/apidesign/vm4brwsr/ByteCodeToJavaScript.java@44ade87ef2a4

     1 /**

     2  * Back 2 Browser Bytecode Translator

     3  * Copyright (C) 2012-2015 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.*;

    24 import org.apidesign.vm4brwsr.ByteCodeParser.AnnotationParser;

    25 import org.apidesign.vm4brwsr.ByteCodeParser.BootMethodData;

    26 import org.apidesign.vm4brwsr.ByteCodeParser.CPX2;

    27 import org.apidesign.vm4brwsr.ByteCodeParser.ClassData;

    28 import org.apidesign.vm4brwsr.ByteCodeParser.FieldData;

    29 import org.apidesign.vm4brwsr.ByteCodeParser.MethodData;

    30 import org.apidesign.vm4brwsr.ByteCodeParser.StackMapIterator;

    31 import org.apidesign.vm4brwsr.ByteCodeParser.TrapData;

    32 import org.apidesign.vm4brwsr.ByteCodeParser.TrapDataIterator;

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

    35  *

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

    37  */

    38 abstract class ByteCodeToJavaScript implements Appendable {

    39     private ClassData jc;

    40     private final Appendable out;

    41     private final StringArray classRefs = new StringArray();

    42     private boolean outChanged;

    43     private boolean callbacks;

    44     private final NumberOperations numbers = new NumberOperations();

    46     protected ByteCodeToJavaScript(Appendable out) {

    47         this.out = out;

    48     }

    50     @Override

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

    52         out.append(csq);

    53         outChanged = true;

    54         return this;

    55     }

    57     @Override

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

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

    60         outChanged = true;

    61         return this;

    62     }

    64     @Override

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

    66         out.append(c);

    67         outChanged = true;

    68         return this;

    69     }

    71     /* Collects additional required resources.

    72      *

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

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

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

    76      */

    77     protected abstract boolean requireReference(String internalClassName);

    79     /*

    80      * @param resourcePath name of resources to read

    81      */

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

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

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

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

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

    89      *

    90      * @param className suggested name of the class

    91      */

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

    93         return className + " = ";

    94     }

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

    96         return classOperation;

    97     }

    99     final String accessClassFalse(String classOperation) {

   100         if (mangleClassName(jc.getClassName()).equals(classOperation)) {

   101             return "c";

   102         }

   103         classRefs.addIfMissing(classOperation);

   104         return "(refs_" + classOperation + " || (refs_" + classOperation + " = " + accessClass(classOperation) + "(false)))";

   105     }

   107     protected FieldData findField(String[] fieldInfoName) throws IOException {

   108         return null;

   109     }

   111     protected String accessField(String object, FieldData data, String[] fieldInfoName)

   112     throws IOException {

   113         String mangledName = "_" + fieldInfoName[1];

   114         return object + "." + mangledName;

   115     }

   117     protected String accessStaticMethod(

   118                              String object,

   119                              String mangledName,

   120                              String[] fieldInfoName) throws IOException {

   121         return object + "." + mangledName;

   122     }

   124     protected String accessVirtualMethod(

   125             String object,

   126             String mangledName,

   127             String[] fieldInfoName,

   128             int params

   129     ) throws IOException {

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

   131     }

   133     protected void declaredClass(ClassData classData, String mangledName)

   134             throws IOException {

   135     }

   137     protected void declaredField(FieldData fieldData,

   138                                  String destObject,

   139                                  String mangledName) throws IOException {

   140     }

   142     protected void declaredMethod(MethodData methodData,

   143                                   String destObject,

   144                                   String mangledName) throws IOException {

   145     }

   147     /** Prints out a debug message.

   148      *

   149      * @param msg the message

   150      * @return true if the message has been printed

   151      * @throws IOException

   152      */

   153     boolean debug(String msg) throws IOException {

   154         append(msg);

   155         return true;

   156     }

   158     /**

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

   160      *

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

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

   163      *

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

   165      */

   167     public String compile(InputStream classFile) throws IOException {

   168         return compile(new ClassData(classFile));

   169     }

   171     protected String compile(ClassData classData) throws IOException {

   172         this.jc = classData;

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

   174         try {

   175             return compileImpl(cn);

   176         } catch (IOException ex) {

   177             throw new IOException("Cannot compile " + cn + ":", ex);

   178         }

   179     }

   181     private String compileImpl(final String cn) throws IOException {

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

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

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

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

   186             );

   187         }

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

   189         {

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

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

   192                 "resource", "processByteCode"

   193             );

   194             if (arr != null) {

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

   196                     requireScript(arr[0]);

   197                 }

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

   199                     return null;

   200                 }

   201             }

   202         }

   203         final String jsResource;

   204         {

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

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

   207                 "value"

   208             );

   209             if (arr != null) {

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

   211                     jsResource = arr[0];

   212                 } else {

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

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

   215                 }

   216             } else {

   217                 jsResource = null;

   218             }

   219         }

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

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

   222             "container", "prototype"

   223         );

   224         StringArray toInitilize = new StringArray();

   225         final String className = className(jc);

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

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

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

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

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

   231         if (proto == null) {

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

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

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

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

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

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

   238         } else {

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

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

   241                 proto[0] = "p";

   242             }

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

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

   245         }

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

   247             if (v.isStatic()) {

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

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

   250                         continue;

   251                     }

   252                 }

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

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

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

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

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

   258             } else {

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

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

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

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

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

   264                     .append("; };");

   265             }

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

   268         }

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

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

   271             if (javaScriptOnly(onlyArr)) continue;

   272             String destObject;

   273             String mn;

   274             append("\n    ");

   275             if (m.isStatic()) {

   276                 destObject = "c";

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

   278             } else {

   279                 if (m.isConstructor()) {

   280                     destObject = "CLS";

   281                     mn = generateInstanceMethod(destObject, m);

   282                 } else {

   283                     destObject = "c";

   284                     mn = generateInstanceMethod(destObject, m);

   285                 }

   286             }

   287             declaredMethod(m, destObject, mn);

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

   289             if (runAnno != null) {

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

   291                 generateAnno(jc, runAnno);

   292                 append("\n    };");

   293             }

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

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

   296         }

   297         append(numbers.generate());

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

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

   300         String instOfName = "$instOf_" + className;

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

   302         if (jc.isInterface()) {

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

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

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

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

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

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

   309                 }

   310             }

   311         }

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

   313             String intrfc = mangleClassName(superInterface);

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

   315             requireReference(superInterface);

   316         }

   317         append("\n    }");

   318         append("\n    if (!c.hasOwnProperty('fillInstOf')) Object.defineProperty(c, 'fillInstOf', { value: ").append(className).append("fillInstOf });");

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

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

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

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

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

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

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

   326         append("\n    CLS.$class.interfaces = function() { return [");

   327         {

   328             boolean first = true;

   329             for (String intrfc : jc.getSuperInterfaces()) {

   330                 if (!first) {

   331                     append(",");

   332                 }

   333                 requireReference(intrfc);

   334                 String mangledIface = mangleClassName(intrfc);

   335                 append("\n        ");

   336                 append(accessClass(mangledIface)).append("(false).constructor.$class");

   337                 first = false;

   338             }

   339         }

   340         append("\n    ]; };");

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

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

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

   344         if (classAnno != null) {

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

   346             generateAnno(jc, classAnno);

   347             append("\n    };");

   348         }

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

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

   351         }

   352         for (String ref : classRefs.toArray()) {

   353             append("\n    var refs_").append(ref).append(";");

   354         }

   355         classRefs.clear();

   357         if (jsResource != null) {

   358             requireResource(jsResource);

   359         }

   361         append("\n  }");

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

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

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

   365         append("\n    }");

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

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

   368             if (javaScriptOnly(onlyArr)) continue;

   369             if (!v.isStatic()) {

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

   371                     append(className).append('_').

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

   373             }

   374         }

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

   376         append("\n  }");

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

   378         append("\n};");

   380         declaredClass(jc, className);

   382 //        StringBuilder sb = new StringBuilder();

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

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

   385 //        }

   386         return "";

   387     }

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

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

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

   392             "name", "value"

   393         );

   394         if (only != null) {

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

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

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

   398             }

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

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

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

   402             }

   403             return true;

   404         }

   405         return false;

   406     }

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

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

   409         if (jsb != null) {

   410             return jsb;

   411         }

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

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

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

   415             if (defineProp) {

   416                 toInitilize.add(accessClassFalse(className(jc)) + "['" + mn + "']");

   417             } else {

   418                 toInitilize.add(accessClassFalse(className(jc)) + "." + mn);

   419             }

   420         }

   421         return mn;

   422     }

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

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

   426         if (jsb != null) {

   427             return jsb;

   428         }

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

   430         generateMethod(destObject, mn, m);

   431         return mn;

   432     }

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

   435             throws IOException {

   436         final StackMapIterator stackMapIterator = m.createStackMapIterator();

   437         TrapDataIterator trap = m.getTrapDataIterator();

   438         final LocalsMapper lmapper =

   439                 new LocalsMapper(stackMapIterator.getArguments());

   441         boolean defineProp =

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

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

   445         if (defineProp) {

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

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

   448         } else {

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

   450         }

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

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

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

   455         if (byteCodes == null) {

   456             if (debug("  throw 'no code found for ")) {

   457                this

   458                .append(jc.getClassName()).append('.')

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

   460             }

   461             if (defineProp) {

   462                 append("}});");

   463             } else {

   464                 append("};");

   465             }

   466             return defineProp;

   467         }

   469         final StackMapper smapper = new StackMapper();

   471         if (!m.isStatic()) {

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

   473         }

   475         int lastStackFrame;

   476         TrapData[] previousTrap = null;

   477         boolean wide = false;

   478         boolean didBranches;

   479         if (stackMapIterator.isEmpty()) {

   480             didBranches = false;

   481             lastStackFrame = 0;

   482         } else {

   483             didBranches = true;

   484             lastStackFrame = -1;

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

   486         }

   488         int openBraces = 0;

   489         int topMostLabel = 0;

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

   491             int prev = i;

   492             outChanged = false;

   493             stackMapIterator.advanceTo(i);

   494             boolean changeInCatch = trap.advanceTo(i);

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

   496                 if (previousTrap != null) {

   497                     generateCatch(previousTrap, i, topMostLabel);

   498                     previousTrap = null;

   499                 }

   500             }

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

   502                 smapper.flush(this);

   503                 if (i != 0) {

   504                     append("    }\n");

   505                 }

   506                 if (openBraces > 64) {

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

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

   509                     }

   510                     openBraces = 1;

   511                     topMostLabel = i;

   512                 }

   514                 lastStackFrame = stackMapIterator.getFrameIndex();

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

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

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

   518                 openBraces++;

   519                 changeInCatch = true;

   520             } else {

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

   522             }

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

   524                 append("try {");

   525                 previousTrap = trap.current();

   526             }

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

   528             switch (c) {

   529                 case opc_aload_0:

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

   531                     break;

   532                 case opc_iload_0:

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

   534                     break;

   535                 case opc_lload_0:

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

   537                     break;

   538                 case opc_fload_0:

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

   540                     break;

   541                 case opc_dload_0:

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

   543                     break;

   544                 case opc_aload_1:

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

   546                     break;

   547                 case opc_iload_1:

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

   549                     break;

   550                 case opc_lload_1:

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

   552                     break;

   553                 case opc_fload_1:

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

   555                     break;

   556                 case opc_dload_1:

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

   558                     break;

   559                 case opc_aload_2:

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

   561                     break;

   562                 case opc_iload_2:

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

   564                     break;

   565                 case opc_lload_2:

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

   567                     break;

   568                 case opc_fload_2:

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

   570                     break;

   571                 case opc_dload_2:

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

   573                     break;

   574                 case opc_aload_3:

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

   576                     break;

   577                 case opc_iload_3:

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

   579                     break;

   580                 case opc_lload_3:

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

   582                     break;

   583                 case opc_fload_3:

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

   585                     break;

   586                 case opc_dload_3:

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

   588                     break;

   589                 case opc_iload: {

   590                     ++i;

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

   592                                           : readUByte(byteCodes, i);

   593                     wide = false;

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

   595                     break;

   596                 }

   597                 case opc_lload: {

   598                     ++i;

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

   600                                           : readUByte(byteCodes, i);

   601                     wide = false;

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

   603                     break;

   604                 }

   605                 case opc_fload: {

   606                     ++i;

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

   608                                           : readUByte(byteCodes, i);

   609                     wide = false;

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

   611                     break;

   612                 }

   613                 case opc_dload: {

   614                     ++i;

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

   616                                           : readUByte(byteCodes, i);

   617                     wide = false;

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

   619                     break;

   620                 }

   621                 case opc_aload: {

   622                     ++i;

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

   624                                           : readUByte(byteCodes, i);

   625                     wide = false;

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

   627                     break;

   628                 }

   629                 case opc_istore: {

   630                     ++i;

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

   632                                           : readUByte(byteCodes, i);

   633                     wide = false;

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

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

   636                     break;

   637                 }

   638                 case opc_lstore: {

   639                     ++i;

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

   641                                           : readUByte(byteCodes, i);

   642                     wide = false;

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

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

   645                     break;

   646                 }

   647                 case opc_fstore: {

   648                     ++i;

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

   650                                           : readUByte(byteCodes, i);

   651                     wide = false;

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

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

   654                     break;

   655                 }

   656                 case opc_dstore: {

   657                     ++i;

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

   659                                           : readUByte(byteCodes, i);

   660                     wide = false;

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

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

   663                     break;

   664                 }

   665                 case opc_astore: {

   666                     ++i;

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

   668                                           : readUByte(byteCodes, i);

   669                     wide = false;

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

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

   672                     break;

   673                 }

   674                 case opc_astore_0:

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

   676                     break;

   677                 case opc_istore_0:

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

   679                     break;

   680                 case opc_lstore_0:

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

   682                     break;

   683                 case opc_fstore_0:

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

   685                     break;

   686                 case opc_dstore_0:

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

   688                     break;

   689                 case opc_astore_1:

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

   691                     break;

   692                 case opc_istore_1:

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

   694                     break;

   695                 case opc_lstore_1:

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

   697                     break;

   698                 case opc_fstore_1:

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

   700                     break;

   701                 case opc_dstore_1:

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

   703                     break;

   704                 case opc_astore_2:

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

   706                     break;

   707                 case opc_istore_2:

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

   709                     break;

   710                 case opc_lstore_2:

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

   712                     break;

   713                 case opc_fstore_2:

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

   715                     break;

   716                 case opc_dstore_2:

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

   718                     break;

   719                 case opc_astore_3:

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

   721                     break;

   722                 case opc_istore_3:

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

   724                     break;

   725                 case opc_lstore_3:

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

   727                     break;

   728                 case opc_fstore_3:

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

   730                     break;

   731                 case opc_dstore_3:

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

   733                     break;

   734                 case opc_iadd:

   735                     smapper.replace(this, VarType.INTEGER, "(((@1) + (@2)) | 0)", smapper.getI(1), smapper.popI());

   736                     break;

   737                 case opc_ladd:

   738                     smapper.replace(this, VarType.LONG, numbers.add64(), smapper.getL(1), smapper.popL());

   739                     break;

   740                 case opc_fadd:

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

   742                     break;

   743                 case opc_dadd:

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

   745                     break;

   746                 case opc_isub:

   747                     smapper.replace(this, VarType.INTEGER, "(((@1) - (@2)) | 0)", smapper.getI(1), smapper.popI());

   748                     break;

   749                 case opc_lsub:

   750                     smapper.replace(this, VarType.LONG, numbers.sub64(), smapper.getL(1), smapper.popL());

   751                     break;

   752                 case opc_fsub:

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

   754                     break;

   755                 case opc_dsub:

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

   757                     break;

   758                 case opc_imul:

   759                     smapper.replace(this, VarType.INTEGER, numbers.mul32(), smapper.getI(1), smapper.popI());

   760                     break;

   761                 case opc_lmul:

   762                     smapper.replace(this, VarType.LONG, numbers.mul64(), smapper.getL(1), smapper.popL());

   763                     break;

   764                 case opc_fmul:

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

   766                     break;

   767                 case opc_dmul:

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

   769                     break;

   770                 case opc_idiv:

   771                     smapper.replace(this, VarType.INTEGER, numbers.div32(),

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

   773                     break;

   774                 case opc_ldiv:

   775                     smapper.replace(this, VarType.LONG, numbers.div64(),

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

   777                     break;

   778                 case opc_fdiv:

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

   780                     break;

   781                 case opc_ddiv:

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

   783                     break;

   784                 case opc_irem:

   785                     smapper.replace(this, VarType.INTEGER, numbers.mod32(),

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

   787                     break;

   788                 case opc_lrem:

   789                     smapper.replace(this, VarType.LONG, numbers.mod64(),

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

   791                     break;

   792                 case opc_frem:

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

   794                     break;

   795                 case opc_drem:

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

   797                     break;

   798                 case opc_iand:

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

   800                     break;

   801                 case opc_land:

   802                     smapper.replace(this, VarType.LONG, numbers.and64(), smapper.getL(1), smapper.popL());

   803                     break;

   804                 case opc_ior:

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

   806                     break;

   807                 case opc_lor:

   808                     smapper.replace(this, VarType.LONG, numbers.or64(), smapper.getL(1), smapper.popL());

   809                     break;

   810                 case opc_ixor:

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

   812                     break;

   813                 case opc_lxor:

   814                     smapper.replace(this, VarType.LONG, numbers.xor64(), smapper.getL(1), smapper.popL());

   815                     break;

   816                 case opc_ineg:

   817                     smapper.replace(this, VarType.INTEGER, "(-(@1) | 0)", smapper.getI(0));

   818                     break;

   819                 case opc_lneg:

   820                     smapper.replace(this, VarType.LONG, numbers.neg64(), smapper.getL(0));

   821                     break;

   822                 case opc_fneg:

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

   824                     break;

   825                 case opc_dneg:

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

   827                     break;

   828                 case opc_ishl:

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

   830                     break;

   831                 case opc_lshl:

   832                     smapper.replace(this, VarType.LONG, numbers.shl64(), smapper.getL(1), smapper.popI());

   833                     break;

   834                 case opc_ishr:

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

   836                     break;

   837                 case opc_lshr:

   838                     smapper.replace(this, VarType.LONG, numbers.shr64(), smapper.getL(1), smapper.popI());

   839                     break;

   840                 case opc_iushr:

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

   842                     break;

   843                 case opc_lushr:

   844                     smapper.replace(this, VarType.LONG, numbers.ushr64(), smapper.getL(1), smapper.popI());

   845                     break;

   846                 case opc_iinc: {

   847                     ++i;

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

   849                                              : readUByte(byteCodes, i);

   850                     ++i;

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

   852                                             : byteCodes[i];

   853                     wide = false;

   854                     if (incrBy == 1) {

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

   856                     } else {

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

   858                              lmapper.getI(varIndx),

   859                              Integer.toString(incrBy));

   860                     }

   861                     break;

   862                 }

   863                 case opc_return:

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

   865                     break;

   866                 case opc_ireturn:

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

   868                     break;

   869                 case opc_lreturn:

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

   871                     break;

   872                 case opc_freturn:

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

   874                     break;

   875                 case opc_dreturn:

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

   877                     break;

   878                 case opc_areturn:

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

   880                     break;

   881                 case opc_i2l:

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

   883                     break;

   884                 case opc_i2f:

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

   886                     break;

   887                 case opc_i2d:

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

   889                     break;

   890                 case opc_l2i:

   891                     smapper.replace(this, VarType.INTEGER, "((@1) | 0)", smapper.getL(0));

   892                     break;

   893                     // max int check?

   894                 case opc_l2f:

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

   896                     break;

   897                 case opc_l2d:

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

   899                     break;

   900                 case opc_f2d:

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

   902                          smapper.getF(0));

   903                     break;

   904                 case opc_d2f:

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

   906                          smapper.getD(0));

   907                     break;

   908                 case opc_f2i:

   909                     smapper.replace(this, VarType.INTEGER, "((@1) | 0)",

   910                          smapper.getF(0));

   911                     break;

   912                 case opc_f2l:

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

   914                          smapper.getF(0));

   915                     break;

   916                 case opc_d2i:

   917                     smapper.replace(this, VarType.INTEGER, "((@1)| 0)",

   918                          smapper.getD(0));

   919                     break;

   920                 case opc_d2l:

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

   922                     break;

   923                 case opc_i2b:

   924                     smapper.replace(this, VarType.INTEGER, "(((@1) << 24) >> 24)", smapper.getI(0));

   925                     break;

   926                 case opc_i2c:

   927                 case opc_i2s:

   928                     smapper.replace(this, VarType.INTEGER, "(((@1) << 16) >> 16)", smapper.getI(0));

   929                     break;

   930                 case opc_aconst_null:

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

   932                     break;

   933                 case opc_iconst_m1:

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

   935                     break;

   936                 case opc_iconst_0:

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

   938                     break;

   939                 case opc_dconst_0:

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

   941                     break;

   942                 case opc_lconst_0:

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

   944                     break;

   945                 case opc_fconst_0:

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

   947                     break;

   948                 case opc_iconst_1:

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

   950                     break;

   951                 case opc_lconst_1:

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

   953                     break;

   954                 case opc_fconst_1:

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

   956                     break;

   957                 case opc_dconst_1:

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

   959                     break;

   960                 case opc_iconst_2:

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

   962                     break;

   963                 case opc_fconst_2:

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

   965                     break;

   966                 case opc_iconst_3:

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

   968                     break;

   969                 case opc_iconst_4:

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

   971                     break;

   972                 case opc_iconst_5:

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

   974                     break;

   975                 case opc_ldc: {

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

   977                     String v = encodeConstant(indx);

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

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

   980                     break;

   981                 }

   982                 case opc_ldc_w:

   983                 case opc_ldc2_w: {

   984                     int indx = readUShortArg(byteCodes, i);

   985                     i += 2;

   986                     String v = encodeConstant(indx);

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

   988                     if (type == VarType.LONG) {

   989                         final Long lv = new Long(v);

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

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

   992                         if (hi == 0) {

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

   994                         } else {

   995                             smapper.assign(this, VarType.LONG,

   996                                 "0x" + Integer.toHexString(hi) + ".next32(0x" +

   997                                     Integer.toHexString(low) + ")"

   998                             );

   999                         }

  1000                     } else {

  1001                         smapper.assign(this, type, v);

  1002                     }

  1003                     break;

  1004                 }

  1005                 case opc_lcmp:

  1006                     smapper.replace(this, VarType.INTEGER, numbers.compare64(), smapper.popL(), smapper.getL(0));

  1007                     break;

  1008                 case opc_fcmpl:

  1009                 case opc_fcmpg:

  1010                     emit(smapper, this, "var @3 = (@2 == @1) ? 0 : ((@2 < @1) ? -1 : 1);",

  1011                          smapper.popF(), smapper.popF(), smapper.pushI());

  1012                     break;

  1013                 case opc_dcmpl:

  1014                 case opc_dcmpg:

  1015                     emit(smapper, this, "var @3 = (@2 == @1) ? 0 : ((@2 < @1) ? -1 : 1);",

  1016                          smapper.popD(), smapper.popD(), smapper.pushI());

  1017                     break;

  1018                 case opc_if_acmpeq:

  1019                     i = generateIf(smapper, byteCodes, i, smapper.popA(), smapper.popA(),

  1020                                    "===", topMostLabel);

  1021                     break;

  1022                 case opc_if_acmpne:

  1023                     i = generateIf(smapper, byteCodes, i, smapper.popA(), smapper.popA(),

  1024                                    "!==", topMostLabel);

  1025                     break;

  1026                 case opc_if_icmpeq:

  1027                     i = generateIf(smapper, byteCodes, i, smapper.popI(), smapper.popI(),

  1028                                    "==", topMostLabel);

  1029                     break;

  1030                 case opc_ifeq: {

  1031                     int indx = i + readShortArg(byteCodes, i);

  1032                     emitIf(smapper, this, "if ((@1) == 0) ",

  1033                          smapper.popI(), i, indx, topMostLabel);

  1034                     i += 2;

  1035                     break;

  1036                 }

  1037                 case opc_ifne: {

  1038                     int indx = i + readShortArg(byteCodes, i);

  1039                     emitIf(smapper, this, "if ((@1) != 0) ",

  1040                          smapper.popI(), i, indx, topMostLabel);

  1041                     i += 2;

  1042                     break;

  1043                 }

  1044                 case opc_iflt: {

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

  1046                     emitIf(smapper, this, "if ((@1) < 0) ",

  1047                          smapper.popI(), i, indx, topMostLabel);

  1048                     i += 2;

  1049                     break;

  1050                 }

  1051                 case opc_ifle: {

  1052                     int indx = i + readShortArg(byteCodes, i);

  1053                     emitIf(smapper, this, "if ((@1) <= 0) ",

  1054                          smapper.popI(), i, indx, topMostLabel);

  1055                     i += 2;

  1056                     break;

  1057                 }

  1058                 case opc_ifgt: {

  1059                     int indx = i + readShortArg(byteCodes, i);

  1060                     emitIf(smapper, this, "if ((@1) > 0) ",

  1061                          smapper.popI(), i, indx, topMostLabel);

  1062                     i += 2;

  1063                     break;

  1064                 }

  1065                 case opc_ifge: {

  1066                     int indx = i + readShortArg(byteCodes, i);

  1067                     emitIf(smapper, this, "if ((@1) >= 0) ",

  1068                          smapper.popI(), i, indx, topMostLabel);

  1069                     i += 2;

  1070                     break;

  1071                 }

  1072                 case opc_ifnonnull: {

  1073                     int indx = i + readShortArg(byteCodes, i);

  1074                     emitIf(smapper, this, "if ((@1) !== null) ",

  1075                          smapper.popA(), i, indx, topMostLabel);

  1076                     i += 2;

  1077                     break;

  1078                 }

  1079                 case opc_ifnull: {

  1080                     int indx = i + readShortArg(byteCodes, i);

  1081                     emitIf(smapper, this, "if ((@1) === null) ",

  1082                          smapper.popA(), i, indx, topMostLabel);

  1083                     i += 2;

  1084                     break;

  1085                 }

  1086                 case opc_if_icmpne:

  1087                     i = generateIf(smapper, byteCodes, i, smapper.popI(), smapper.popI(),

  1088                                    "!=", topMostLabel);

  1089                     break;

  1090                 case opc_if_icmplt:

  1091                     i = generateIf(smapper, byteCodes, i, smapper.popI(), smapper.popI(),

  1092                                    "<", topMostLabel);

  1093                     break;

  1094                 case opc_if_icmple:

  1095                     i = generateIf(smapper, byteCodes, i, smapper.popI(), smapper.popI(),

  1096                                    "<=", topMostLabel);

  1097                     break;

  1098                 case opc_if_icmpgt:

  1099                     i = generateIf(smapper, byteCodes, i, smapper.popI(), smapper.popI(),

  1100                                    ">", topMostLabel);

  1101                     break;

  1102                 case opc_if_icmpge:

  1103                     i = generateIf(smapper, byteCodes, i, smapper.popI(), smapper.popI(),

  1104                                    ">=", topMostLabel);

  1105                     break;

  1106                 case opc_goto: {

  1107                     smapper.flush(this);

  1108                     int indx = i + readShortArg(byteCodes, i);

  1109                     goTo(this, i, indx, topMostLabel);

  1110                     i += 2;

  1111                     break;

  1112                 }

  1113                 case opc_lookupswitch: {

  1114                     i = generateLookupSwitch(i, byteCodes, smapper, topMostLabel);

  1115                     break;

  1116                 }

  1117                 case opc_tableswitch: {

  1118                     i = generateTableSwitch(i, byteCodes, smapper, topMostLabel);

  1119                     break;

  1120                 }

  1121                 case opc_invokeinterface: {

  1122                     i = invokeVirtualMethod(byteCodes, i, smapper) + 2;

  1123                     break;

  1124                 }

  1125                 case opc_invokevirtual:

  1126                     i = invokeVirtualMethod(byteCodes, i, smapper);

  1127                     break;

  1128                 case opc_invokespecial:

  1129                     i = invokeStaticMethod(byteCodes, i, smapper, false);

  1130                     break;

  1131                 case opc_invokestatic:

  1132                     i = invokeStaticMethod(byteCodes, i, smapper, true);

  1133                     break;

  1134                 case opc_invokedynamic: {

  1135                     int indx = readUShortArg(byteCodes, i);

  1136                     println("invoke dynamic: " + indx);

  1137                     ByteCodeParser.CPX2 c2 = jc.getCpoolEntry(indx);

  1138                     BootMethodData bm = jc.getBootMethod(c2.cpx1);

  1139                     CPX2 methodHandle = jc.getCpoolEntry(bm.method);

  1140                     println("  type: " + methodHandle.cpx1);

  1141                     String[] mi = jc.getFieldInfoName(methodHandle.cpx2);

  1142                     String mcn = mangleClassName(mi[0]);

  1143                     char[] returnType = {'V'};

  1144                     StringBuilder cnt = new StringBuilder();

  1145                     String mn = findMethodName(mi, cnt, returnType);

  1146                     StringBuilder sb = new StringBuilder();

  1147                     sb.append("We don't handle invokedynamic, need to preprocess ahead-of-time:\n");

  1148                     sb.append("  mi[0]: ").append(mi[0]).append("\n");

  1149                     sb.append("  mi[1]: ").append(mi[1]).append("\n");

  1150                     sb.append("  mi[2]: ").append(mi[2]).append("\n");

  1151                     sb.append("  mn   : ").append(mn).append("\n");

  1152                     sb.append("  name and type: ").append(jc.stringValue(c2.cpx2, true)).append("\n");

  1153                     throw new IOException(sb.toString());

  1154                     /*

  1155                     CPX2 nameAndType = jc.getCpoolEntry(c2.cpx2);

  1156                     String type = jc.StringValue(nameAndType.cpx2);

  1157                     String object = accessClass(mcn) + "(false)";

  1158                     if (mn.startsWith("cons_")) {

  1159                         object += ".constructor";

  1160                     }

  1161                     append("var metHan = ");

  1162                     append(accessStaticMethod(object, mn, mi));

  1163                     append('(');

  1164                     String lookup = accessClass("java_lang_invoke_MethodHandles") + "(false).findFor__Ljava_lang_invoke_MethodHandles$Lookup_2Ljava_lang_Class_2(CLS.$class)";

  1165                     append(lookup);

  1166                     append(", '").append(mi[1]).append("', ");

  1167                     String methodType = accessClass("java_lang_invoke_MethodType") + "(false).fromMethodDescriptorString__Ljava_lang_invoke_MethodType_2Ljava_lang_String_2Ljava_lang_ClassLoader_2(";

  1168                     append(methodType).append("'").append(type).append("', null)");

  1169 //                    if (numArguments > 0) {

  1170 //                        append(vars[0]);

  1171 //                        for (int j = 1; j < numArguments; ++j) {

  1172 //                            append(", ");

  1173 //                            append(vars[j]);

  1174 //                        }

  1175 //                    }

  1176                     append(");");

  1177                     emit(smapper, this, "throw 'Invoke dynamic: ' + @1 + ': ' + metHan;", "" + indx);

  1178                     i += 4;

  1179                     break;

  1180                     */

  1181                 }

  1182                 case opc_new: {

  1183                     int indx = readUShortArg(byteCodes, i);

  1184                     String ci = jc.getClassName(indx);

  1185                     emit(smapper, this, "var @1 = new @2;",

  1186                          smapper.pushA(), accessClass(mangleClassName(ci)));

  1187                     addReference(ci);

  1188                     i += 2;

  1189                     break;

  1190                 }

  1191                 case opc_newarray:

  1192                     int atype = readUByte(byteCodes, ++i);

  1193                     generateNewArray(atype, smapper);

  1194                     break;

  1195                 case opc_anewarray: {

  1196                     int type = readUShortArg(byteCodes, i);

  1197                     i += 2;

  1198                     generateANewArray(type, smapper);

  1199                     break;

  1200                 }

  1201                 case opc_multianewarray: {

  1202                     int type = readUShortArg(byteCodes, i);

  1203                     i += 2;

  1204                     i = generateMultiANewArray(type, byteCodes, i, smapper);

  1205                     break;

  1206                 }

  1207                 case opc_arraylength:

  1208                     smapper.replace(this, VarType.INTEGER, "(@1).length", smapper.getA(0));

  1209                     break;

  1210                 case opc_lastore:

  1211                     emit(smapper, this, "Array.at(@3, @2, @1);",

  1212                          smapper.popL(), smapper.popI(), smapper.popA());

  1213                     break;

  1214                 case opc_fastore:

  1215                     emit(smapper, this, "Array.at(@3, @2, @1);",

  1216                          smapper.popF(), smapper.popI(), smapper.popA());

  1217                     break;

  1218                 case opc_dastore:

  1219                     emit(smapper, this, "Array.at(@3, @2, @1);",

  1220                          smapper.popD(), smapper.popI(), smapper.popA());

  1221                     break;

  1222                 case opc_aastore:

  1223                     emit(smapper, this, "Array.at(@3, @2, @1);",

  1224                          smapper.popA(), smapper.popI(), smapper.popA());

  1225                     break;

  1226                 case opc_iastore:

  1227                 case opc_bastore:

  1228                 case opc_castore:

  1229                 case opc_sastore:

  1230                     emit(smapper, this, "Array.at(@3, @2, @1);",

  1231                          smapper.popI(), smapper.popI(), smapper.popA());

  1232                     break;

  1233                 case opc_laload:

  1234                     smapper.replace(this, VarType.LONG, "Array.at(@2, @1)",

  1235                          smapper.popI(), smapper.getA(0));

  1236                     break;

  1237                 case opc_faload:

  1238                     smapper.replace(this, VarType.FLOAT, "Array.at(@2, @1)",

  1239                          smapper.popI(), smapper.getA(0));

  1240                     break;

  1241                 case opc_daload:

  1242                     smapper.replace(this, VarType.DOUBLE, "Array.at(@2, @1)",

  1243                          smapper.popI(), smapper.getA(0));

  1244                     break;

  1245                 case opc_aaload:

  1246                     smapper.replace(this, VarType.REFERENCE, "Array.at(@2, @1)",

  1247                          smapper.popI(), smapper.getA(0));

  1248                     break;

  1249                 case opc_iaload:

  1250                 case opc_baload:

  1251                 case opc_caload:

  1252                 case opc_saload:

  1253                     smapper.replace(this, VarType.INTEGER, "Array.at(@2, @1)",

  1254                          smapper.popI(), smapper.getA(0));

  1255                     break;

  1256                 case opc_pop:

  1257                 case opc_pop2:

  1258                     smapper.pop(1);

  1259                     debug("/* pop */");

  1260                     break;

  1261                 case opc_dup: {

  1262                     final Variable v = smapper.get(0);

  1263                     if (smapper.isDirty()) {

  1264                         emit(smapper, this, "var @1 = @2;", smapper.pushT(v.getType()), v);

  1265                     } else {

  1266                         smapper.assign(this, v.getType(), v);

  1267                     }

  1268                     break;

  1269                 }

  1270                 case opc_dup2: {

  1271                     final Variable vi1 = smapper.get(0);

  1273                     if (vi1.isCategory2()) {

  1274                         emit(smapper, this, "var @1 = @2;",

  1275                              smapper.pushT(vi1.getType()), vi1);

  1276                     } else {

  1277                         final Variable vi2 = smapper.get(1);

  1278                         emit(smapper, this, "var @1 = @2, @3 = @4;",

  1279                              smapper.pushT(vi2.getType()), vi2,

  1280                              smapper.pushT(vi1.getType()), vi1);

  1281                     }

  1282                     break;

  1283                 }

  1284                 case opc_dup_x1: {

  1285                     final Variable vi1 = smapper.pop(this);

  1286                     final Variable vi2 = smapper.pop(this);

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

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

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

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

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

  1293                     break;

  1294                 }

  1295                 case opc_dup2_x1: {

  1296                     final Variable vi1 = smapper.pop(this);

  1297                     final Variable vi2 = smapper.pop(this);

  1299                     if (vi1.isCategory2()) {

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

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

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

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

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

  1306                     } else {

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

  1308                         final Variable vo5 = smapper.pushT(vi2.getType());

  1309                         final Variable vo4 = smapper.pushT(vi1.getType());

  1310                         final Variable vo3 = smapper.pushT(vi3.getType());

  1311                         final Variable vo2 = smapper.pushT(vi2.getType());

  1312                         final Variable vo1 = smapper.pushT(vi1.getType());

  1314                         emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6,",

  1315                              vo1, vi1, vo2, vi2, vo3, vi3);

  1316                         emit(smapper, this, " @1 = @2, @3 = @4;",

  1317                              vo4, vo1, vo5, vo2);

  1318                     }

  1319                     break;

  1320                 }

  1321                 case opc_dup_x2: {

  1322                     final Variable vi1 = smapper.pop(this);

  1323                     final Variable vi2 = smapper.pop(this);

  1325                     if (vi2.isCategory2()) {

  1326                         final Variable vo3 = smapper.pushT(vi1.getType());

  1327                         final Variable vo2 = smapper.pushT(vi2.getType());

  1328                         final Variable vo1 = smapper.pushT(vi1.getType());

  1330                         emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6;",

  1331                              vo1, vi1, vo2, vi2, vo3, vo1);

  1332                     } else {

  1333                         final Variable vi3 = smapper.pop(this);

  1334                         final Variable vo4 = smapper.pushT(vi1.getType());

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

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

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

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

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

  1341                     }

  1342                     break;

  1343                 }

  1344                 case opc_dup2_x2: {

  1345                     final Variable vi1 = smapper.pop(this);

  1346                     final Variable vi2 = smapper.pop(this);

  1348                     if (vi1.isCategory2()) {

  1349                         if (vi2.isCategory2()) {

  1350                             final Variable vo3 = smapper.pushT(vi1.getType());

  1351                             final Variable vo2 = smapper.pushT(vi2.getType());

  1352                             final Variable vo1 = smapper.pushT(vi1.getType());

  1354                             emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6;",

  1355                                  vo1, vi1, vo2, vi2, vo3, vo1);

  1356                         } else {

  1357                             final Variable vi3 = smapper.pop(this);

  1358                             final Variable vo4 = smapper.pushT(vi1.getType());

  1359                             final Variable vo3 = smapper.pushT(vi3.getType());

  1360                             final Variable vo2 = smapper.pushT(vi2.getType());

  1361                             final Variable vo1 = smapper.pushT(vi1.getType());

  1363                             emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6, @7 = @8;",

  1364                                  vo1, vi1, vo2, vi2, vo3, vi3, vo4, vo1);

  1365                         }

  1366                     } else {

  1367                         final Variable vi3 = smapper.pop(this);

  1369                         if (vi3.isCategory2()) {

  1370                             final Variable vo5 = smapper.pushT(vi2.getType());

  1371                             final Variable vo4 = smapper.pushT(vi1.getType());

  1372                             final Variable vo3 = smapper.pushT(vi3.getType());

  1373                             final Variable vo2 = smapper.pushT(vi2.getType());

  1374                             final Variable vo1 = smapper.pushT(vi1.getType());

  1376                             emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6,",

  1377                                  vo1, vi1, vo2, vi2, vo3, vi3);

  1378                             emit(smapper, this, " @1 = @2, @3 = @4;",

  1379                                  vo4, vo1, vo5, vo2);

  1380                         } else {

  1381                             final Variable vi4 = smapper.pop(this);

  1382                             final Variable vo6 = smapper.pushT(vi2.getType());

  1383                             final Variable vo5 = smapper.pushT(vi1.getType());

  1384                             final Variable vo4 = smapper.pushT(vi4.getType());

  1385                             final Variable vo3 = smapper.pushT(vi3.getType());

  1386                             final Variable vo2 = smapper.pushT(vi2.getType());

  1387                             final Variable vo1 = smapper.pushT(vi1.getType());

  1389                             emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6, @7 = @8,",

  1390                                  vo1, vi1, vo2, vi2, vo3, vi3, vo4, vi4);

  1391                             emit(smapper, this, " @1 = @2, @3 = @4;",

  1392                                  vo5, vo1, vo6, vo2);

  1393                         }

  1394                     }

  1395                     break;

  1396                 }

  1397                 case opc_swap: {

  1398                     final Variable vi1 = smapper.get(0);

  1399                     final Variable vi2 = smapper.get(1);

  1401                     if (vi1.getType() == vi2.getType()) {

  1402                         final Variable tmp = smapper.pushT(vi1.getType());

  1404                         emit(smapper, this, "var @1 = @2, @2 = @3, @3 = @1;",

  1405                              tmp, vi1, vi2);

  1406                         smapper.pop(1);

  1407                     } else {

  1408                         smapper.pop(2);

  1409                         smapper.pushT(vi1.getType());

  1410                         smapper.pushT(vi2.getType());

  1411                     }

  1412                     break;

  1413                 }

  1414                 case opc_bipush:

  1415                     smapper.assign(this, VarType.INTEGER,

  1416                         "(" + Integer.toString(byteCodes[++i]) + ")");

  1417                     break;

  1418                 case opc_sipush:

  1419                     smapper.assign(this, VarType.INTEGER,

  1420                         "(" + Integer.toString(readShortArg(byteCodes, i)) + ")"

  1421                     );

  1422                     i += 2;

  1423                     break;

  1424                 case opc_getfield: {

  1425                     int indx = readUShortArg(byteCodes, i);

  1426                     String[] fi = jc.getFieldInfoName(indx);

  1427                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1428                     FieldData field = findField(fi);

  1429                     if (field == null) {

  1430                         final String mangleClass = mangleClassName(fi[0]);

  1431                         final String mangleClassAccess = accessClassFalse(mangleClass);

  1432                         smapper.replace(this, type, "@2.call(@1)",

  1433                              smapper.getA(0),

  1434                              accessField(mangleClassAccess, null, fi)

  1435                         );

  1436                     } else {

  1437                         final String fieldOwner = mangleClassName(field.cls.getClassName());

  1438                         smapper.replace(this, type, "@1.@2",

  1439                              smapper.getA(0),

  1440                              accessField(fieldOwner, field, fi)

  1441                         );

  1442                     }

  1443                     i += 2;

  1444                     addReference(fi[0]);

  1445                     break;

  1446                 }

  1447                 case opc_putfield: {

  1448                     int indx = readUShortArg(byteCodes, i);

  1449                     String[] fi = jc.getFieldInfoName(indx);

  1450                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1451                     FieldData field = findField(fi);

  1452                     if (field == null) {

  1453                         final String mangleClass = mangleClassName(fi[0]);

  1454                         final String mangleClassAccess = accessClassFalse(mangleClass);

  1455                         emit(smapper, this, "@3.call(@2, @1);",

  1456                              smapper.popT(type),

  1457                              smapper.popA(),

  1458                              accessField(mangleClassAccess, null, fi)

  1459                         );

  1460                     } else {

  1461                         final String fieldOwner = mangleClassName(field.cls.getClassName());

  1462                         emit(smapper, this, "@2.@3 = @1;",

  1463                              smapper.popT(type),

  1464                              smapper.popA(),

  1465                              accessField(fieldOwner, field, fi)

  1466                         );

  1467                     }

  1468                     i += 2;

  1469                     addReference(fi[0]);

  1470                     break;

  1471                 }

  1472                 case opc_getstatic: {

  1473                     int indx = readUShortArg(byteCodes, i);

  1474                     String[] fi = jc.getFieldInfoName(indx);

  1475                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1476                     String ac = accessClassFalse(mangleClassName(fi[0]));

  1477                     FieldData field = findField(fi);

  1478                     String af = accessField(ac, field, fi);

  1479                     smapper.assign(this, type, af + "()");

  1480                     i += 2;

  1481                     addReference(fi[0]);

  1482                     break;

  1483                 }

  1484                 case opc_putstatic: {

  1485                     int indx = readUShortArg(byteCodes, i);

  1486                     String[] fi = jc.getFieldInfoName(indx);

  1487                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1488                     emit(smapper, this, "@1._@2(@3);",

  1489                          accessClassFalse(mangleClassName(fi[0])), fi[1],

  1490                          smapper.popT(type));

  1491                     i += 2;

  1492                     addReference(fi[0]);

  1493                     break;

  1494                 }

  1495                 case opc_checkcast: {

  1496                     int indx = readUShortArg(byteCodes, i);

  1497                     generateCheckcast(indx, smapper);

  1498                     i += 2;

  1499                     break;

  1500                 }

  1501                 case opc_instanceof: {

  1502                     int indx = readUShortArg(byteCodes, i);

  1503                     generateInstanceOf(indx, smapper);

  1504                     i += 2;

  1505                     break;

  1506                 }

  1507                 case opc_athrow: {

  1508                     final CharSequence v = smapper.popA();

  1509                     smapper.clear();

  1511                     emit(smapper, this, "{ var @1 = @2; throw @2; }",

  1512                          smapper.pushA(), v);

  1513                     break;

  1514                 }

  1516                 case opc_monitorenter: {

  1517                     debug("/* monitor enter */");

  1518                     smapper.popA();

  1519                     break;

  1520                 }

  1522                 case opc_monitorexit: {

  1523                     debug("/* monitor exit */");

  1524                     smapper.popA();

  1525                     break;

  1526                 }

  1528                 case opc_wide:

  1529                     wide = true;

  1530                     break;

  1532                 default: {

  1533                     wide = false;

  1534                     emit(smapper, this, "throw 'unknown bytecode @1';",

  1535                          Integer.toString(c));

  1536                 }

  1537             }

  1538             if (debug(" //")) {

  1539                 generateByteCodeComment(prev, i, byteCodes);

  1540             }

  1541             if (outChanged) {

  1542                 append("\n");

  1543             }

  1544         }

  1545         if (previousTrap != null) {

  1546             generateCatch(previousTrap, byteCodes.length, topMostLabel);

  1547         }

  1548         if (didBranches) {

  1549             append("\n    }\n");

  1550         }

  1551         while (openBraces-- > 0) {

  1552             append('}');

  1553         }

  1554         if (defineProp) {

  1555             append("\n}});");

  1556         } else {

  1557             append("\n};");

  1558         }

  1559         return defineProp;

  1560     }

  1562     private int generateIf(StackMapper mapper, byte[] byteCodes,

  1563         int i, final CharSequence v2, final CharSequence v1,

  1564         final String test, int topMostLabel

  1565     ) throws IOException {

  1566         mapper.flush(this);

  1567         int indx = i + readShortArg(byteCodes, i);

  1568         append("if ((").append(v1)

  1569            .append(") ").append(test).append(" (")

  1570            .append(v2).append(")) ");

  1571         goTo(this, i, indx, topMostLabel);

  1572         return i + 2;

  1573     }

  1575     private int readInt4(byte[] byteCodes, int offset) {

  1576         final int d = byteCodes[offset + 0] << 24;

  1577         final int c = byteCodes[offset + 1] << 16;

  1578         final int b = byteCodes[offset + 2] << 8;

  1579         final int a = byteCodes[offset + 3];

  1580         return (d & 0xff000000) | (c & 0xff0000) | (b & 0xff00) | (a & 0xff);

  1581     }

  1582     private static int readUByte(byte[] byteCodes, int offset) {

  1583         return byteCodes[offset] & 0xff;

  1584     }

  1586     private static int readUShort(byte[] byteCodes, int offset) {

  1587         return ((byteCodes[offset] & 0xff) << 8)

  1588                     | (byteCodes[offset + 1] & 0xff);

  1589     }

  1590     private static int readUShortArg(byte[] byteCodes, int offsetInstruction) {

  1591         return readUShort(byteCodes, offsetInstruction + 1);

  1592     }

  1594     private static int readShort(byte[] byteCodes, int offset) {

  1595         int signed = byteCodes[offset];

  1596         byte b0 = (byte)signed;

  1597         return (b0 << 8) | (byteCodes[offset + 1] & 0xff);

  1598     }

  1599     private static int readShortArg(byte[] byteCodes, int offsetInstruction) {

  1600         return readShort(byteCodes, offsetInstruction + 1);

  1601     }

  1603     private static void countArgs(String descriptor, char[] returnType, StringBuilder sig, StringBuilder cnt) {

  1604         int i = 0;

  1605         Boolean count = null;

  1606         boolean array = false;

  1607         sig.append("__");

  1608         int firstPos = sig.length();

  1609         while (i < descriptor.length()) {

  1610             char ch = descriptor.charAt(i++);

  1611             switch (ch) {

  1612                 case '(':

  1613                     count = true;

  1614                     continue;

  1615                 case ')':

  1616                     count = false;

  1617                     continue;

  1618                 case 'B':

  1619                 case 'C':

  1620                 case 'D':

  1621                 case 'F':

  1622                 case 'I':

  1623                 case 'J':

  1624                 case 'S':

  1625                 case 'Z':

  1626                     if (count) {

  1627                         if (array) {

  1628                             sig.append("_3");

  1629                         }

  1630                         sig.append(ch);

  1631                         if (ch == 'J' || ch == 'D') {

  1632                             cnt.append('1');

  1633                         } else {

  1634                             cnt.append('0');

  1635                         }

  1636                     } else {

  1637                         sig.insert(firstPos, ch);

  1638                         if (array) {

  1639                             returnType[0] = '[';

  1640                             sig.insert(firstPos, "_3");

  1641                         } else {

  1642                             returnType[0] = ch;

  1643                         }

  1644                     }

  1645                     array = false;

  1646                     continue;

  1647                 case 'V':

  1648                     assert !count;

  1649                     returnType[0] = 'V';

  1650                     sig.insert(firstPos, 'V');

  1651                     continue;

  1652                 case 'L':

  1653                     int next = descriptor.indexOf(';', i);

  1654                     String realSig = mangleSig(descriptor, i - 1, next + 1);

  1655                     if (count) {

  1656                         if (array) {

  1657                             sig.append("_3");

  1658                         }

  1659                         sig.append(realSig);

  1660                         cnt.append('0');

  1661                     } else {

  1662                         sig.insert(firstPos, realSig);

  1663                         if (array) {

  1664                             sig.insert(firstPos, "_3");

  1665                         }

  1666                         returnType[0] = 'L';

  1667                     }

  1668                     i = next + 1;

  1669                     array = false;

  1670                     continue;

  1671                 case '[':

  1672                     array = true;

  1673                     continue;

  1674                 default:

  1675                     throw new IllegalStateException("Invalid char: " + ch);

  1676             }

  1677         }

  1678     }

  1680     static String mangleSig(String sig) {

  1681         return mangleSig(sig, 0, sig.length());

  1682     }

  1684     private static String mangleMethodName(String name) {

  1685         StringBuilder sb = new StringBuilder(name.length() * 2);

  1686         int last = name.length();

  1687         for (int i = 0; i < last; i++) {

  1688             final char ch = name.charAt(i);

  1689             switch (ch) {

  1690                 case '_': sb.append("_1"); break;

  1691                 default: sb.append(ch); break;

  1692             }

  1693         }

  1694         return sb.toString();

  1695     }

  1696     private static String mangleSig(String txt, int first, int last) {

  1697         StringBuilder sb = new StringBuilder((last - first) * 2);

  1698         for (int i = first; i < last; i++) {

  1699             final char ch = txt.charAt(i);

  1700             switch (ch) {

  1701                 case '/': sb.append('_'); break;

  1702                 case '_': sb.append("_1"); break;

  1703                 case ';': sb.append("_2"); break;

  1704                 case '[': sb.append("_3"); break;

  1705                 default:

  1706                     if (Character.isJavaIdentifierPart(ch)) {

  1707                         sb.append(ch);

  1708                     } else {

  1709                         sb.append("_0");

  1710                         String hex = Integer.toHexString(ch).toLowerCase();

  1711                         for (int m = hex.length(); m < 4; m++) {

  1712                             sb.append("0");

  1713                         }

  1714                         sb.append(hex);

  1715                     }

  1716                 break;

  1717             }

  1718         }

  1719         return sb.toString();

  1720     }

  1722     private static String mangleClassName(String name) {

  1723         return mangleSig(name);

  1724     }

  1726     private static String findMethodName(MethodData m, StringBuilder cnt) {

  1727         StringBuilder name = new StringBuilder();

  1728         if ("<init>".equals(m.getName())) { // NOI18N

  1729             name.append("cons"); // NOI18N

  1730         } else if ("<clinit>".equals(m.getName())) { // NOI18N

  1731             name.append("class"); // NOI18N

  1732         } else {

  1733             name.append(mangleMethodName(m.getName()));

  1734         }

  1736         countArgs(m.getInternalSig(), new char[1], name, cnt);

  1737         return name.toString();

  1738     }

  1740     static String findMethodName(String[] mi, StringBuilder cnt, char[] returnType) {

  1741         StringBuilder name = new StringBuilder();

  1742         String descr = mi[2];//mi.getDescriptor();

  1743         String nm= mi[1];

  1744         if ("<init>".equals(nm)) { // NOI18N

  1745             name.append("cons"); // NOI18N

  1746         } else {

  1747             name.append(mangleMethodName(nm));

  1748         }

  1749         countArgs(descr, returnType, name, cnt);

  1750         return name.toString();

  1751     }

  1753     private int invokeStaticMethod(byte[] byteCodes, int i, final StackMapper mapper, boolean isStatic)

  1754     throws IOException {

  1755         int methodIndex = readUShortArg(byteCodes, i);

  1756         String[] mi = jc.getFieldInfoName(methodIndex);

  1757         char[] returnType = { 'V' };

  1758         StringBuilder cnt = new StringBuilder();

  1759         String mn = findMethodName(mi, cnt, returnType);

  1761         final int numArguments = isStatic ? cnt.length() : cnt.length() + 1;

  1762         final CharSequence[] vars = new CharSequence[numArguments];

  1764         for (int j = numArguments - 1; j >= 0; --j) {

  1765             vars[j] = mapper.popValue();

  1766         }

  1768         if ((

  1769             "newUpdater__Ljava_util_concurrent_atomic_AtomicIntegerFieldUpdater_2Ljava_lang_Class_2Ljava_lang_String_2".equals(mn)

  1770             && "java/util/concurrent/atomic/AtomicIntegerFieldUpdater".equals(mi[0])

  1771         ) || (

  1772             "newUpdater__Ljava_util_concurrent_atomic_AtomicLongFieldUpdater_2Ljava_lang_Class_2Ljava_lang_String_2".equals(mn)

  1773             && "java/util/concurrent/atomic/AtomicLongFieldUpdater".equals(mi[0])

  1774         )) {

  1775             if (vars[1] instanceof String) {

  1776                 String field = vars[1].toString();

  1777                 if (field.length() > 2 && field.charAt(0) == '"' && field.charAt(field.length() - 1) == '"') {

  1778                     vars[1] = "c._" + field.substring(1, field.length() - 1);

  1779                 }

  1780             }

  1781         }

  1782         if (

  1783             "newUpdater__Ljava_util_concurrent_atomic_AtomicReferenceFieldUpdater_2Ljava_lang_Class_2Ljava_lang_Class_2Ljava_lang_String_2".equals(mn)

  1784             && "java/util/concurrent/atomic/AtomicReferenceFieldUpdater".equals(mi[0])

  1785         ) {

  1786             if (vars[1] instanceof String) {

  1787                 String field = vars[2].toString();

  1788                 if (field.length() > 2 && field.charAt(0) == '"' && field.charAt(field.length() - 1) == '"') {

  1789                     vars[2] = "c._" + field.substring(1, field.length() - 1);

  1790                 }

  1791             }

  1792         }

  1794         if (returnType[0] != 'V') {

  1795             mapper.flush(this);

  1796             append("var ")

  1797                .append(mapper.pushT(VarType.fromFieldType(returnType[0])))

  1798                .append(" = ");

  1799         }

  1801         final String in = mi[0];

  1802         String mcn;

  1803         if (callbacks && (

  1804             in.equals("org/apidesign/html/boot/spi/Fn") ||

  1805             in.equals("org/netbeans/html/boot/spi/Fn")

  1806         )) {

  1807             mcn = "java_lang_Class";

  1808         } else {

  1809             mcn = mangleClassName(in);

  1810         }

  1811         String object = accessClassFalse(mcn);

  1812         if (mn.startsWith("cons_")) {

  1813             object += ".constructor";

  1814         }

  1815         append(accessStaticMethod(object, mn, mi));

  1816         if (isStatic) {

  1817             append('(');

  1818         } else {

  1819             append(".call(");

  1820         }

  1821         if (numArguments > 0) {

  1822             append(vars[0]);

  1823             for (int j = 1; j < numArguments; ++j) {

  1824                 append(", ");

  1825                 append(vars[j]);

  1826             }

  1827         }

  1828         append(");");

  1829         i += 2;

  1830         addReference(in);

  1831         return i;

  1832     }

  1833     private int invokeVirtualMethod(byte[] byteCodes, int i, final StackMapper mapper)

  1834     throws IOException {

  1835         int methodIndex = readUShortArg(byteCodes, i);

  1836         String[] mi = jc.getFieldInfoName(methodIndex);

  1837         char[] returnType = { 'V' };

  1838         StringBuilder cnt = new StringBuilder();

  1839         String mn = findMethodName(mi, cnt, returnType);

  1841         final int numArguments = cnt.length() + 1;

  1842         final CharSequence[] vars =  new CharSequence[numArguments];

  1844         for (int j = numArguments - 1; j >= 0; --j) {

  1845             vars[j] = mapper.popValue();

  1846         }

  1848         if (returnType[0] != 'V') {

  1849             mapper.flush(this);

  1850             append("var ")

  1851                .append(mapper.pushT(VarType.fromFieldType(returnType[0])))

  1852                .append(" = ");

  1853         }

  1855         append(accessVirtualMethod(vars[0].toString(), mn, mi, numArguments));

  1856         String sep = "";

  1857         for (int j = 1; j < numArguments; ++j) {

  1858             append(sep);

  1859             append(vars[j]);

  1860             sep = ", ";

  1861         }

  1862         append(");");

  1863         i += 2;

  1864         return i;

  1865     }

  1867     private void addReference(String cn) throws IOException {

  1868         if (requireReference(cn)) {

  1869             debug(" /* needs " + cn + " */");

  1870         }

  1871     }

  1873     private void outType(String d, StringBuilder out) {

  1874         int arr = 0;

  1875         while (d.charAt(0) == '[') {

  1876             out.append('A');

  1877             d = d.substring(1);

  1878         }

  1879         if (d.charAt(0) == 'L') {

  1880             assert d.charAt(d.length() - 1) == ';';

  1881             out.append(mangleClassName(d).substring(0, d.length() - 1));

  1882         } else {

  1883             out.append(d);

  1884         }

  1885     }

  1887     private String encodeConstant(int entryIndex) throws IOException {

  1888         String[] classRef = { null };

  1889         String s = jc.stringValue(entryIndex, classRef);

  1890         if (classRef[0] != null) {

  1891             if (classRef[0].startsWith("[")) {

  1892                 s = accessClass("java_lang_Class") + "(false)['forName__Ljava_lang_Class_2Ljava_lang_String_2']('" + classRef[0] + "')";

  1893             } else {

  1894                 addReference(classRef[0]);

  1895                 s = accessClassFalse(mangleClassName(s)) + ".constructor.$class";

  1896             }

  1897         }

  1898         return s;

  1899     }

  1901     private String javaScriptBody(String destObject, MethodData m, boolean isStatic) throws IOException {

  1902         byte[] arr = m.findAnnotationData(true);

  1903         if (arr == null) {

  1904             return null;

  1905         }

  1906         final String jvmType = "Lorg/apidesign/bck2brwsr/core/JavaScriptBody;";

  1907         final String htmlType = "Lnet/java/html/js/JavaScriptBody;";

  1908         class P extends AnnotationParser {

  1909             public P() {

  1910                 super(false, true);

  1911             }

  1913             int cnt;

  1914             String[] args = new String[30];

  1915             String body;

  1916             boolean javacall;

  1917             boolean html4j;

  1919             @Override

  1920             protected void visitAttr(String type, String attr, String at, String value) {

  1921                 if (type.equals(jvmType)) {

  1922                     if ("body".equals(attr)) {

  1923                         body = value;

  1924                     } else if ("args".equals(attr)) {

  1925                         args[cnt++] = value;

  1926                     } else {

  1927                         throw new IllegalArgumentException(attr);

  1928                     }

  1929                 }

  1930                 if (type.equals(htmlType)) {

  1931                     html4j = true;

  1932                     if ("body".equals(attr)) {

  1933                         body = value;

  1934                     } else if ("args".equals(attr)) {

  1935                         args[cnt++] = value;

  1936                     } else if ("javacall".equals(attr)) {

  1937                         javacall = "1".equals(value);

  1938                     } else if ("wait4js".equals(attr)) {

  1939                         // ignore, we always invoke synchronously

  1940                     } else {

  1941                         throw new IllegalArgumentException(attr);

  1942                     }

  1943                 }

  1944             }

  1945         }

  1946         P p = new P();

  1947         p.parse(arr, jc);

  1948         if (p.body == null) {

  1949             return null;

  1950         }

  1951         StringBuilder cnt = new StringBuilder();

  1952         final String mn = findMethodName(m, cnt);

  1953         append("m = ").append(destObject).append(".").append(mn);

  1954         append(" = function(");

  1955         String space = "";

  1956         int index = 0;

  1957         StringBuilder toValue = new StringBuilder();

  1958         for (int i = 0; i < cnt.length(); i++) {

  1959             append(space);

  1960             space = outputArg(this, p.args, index);

  1961             if (p.html4j && space.length() > 0) {

  1962                 toValue.append("\n  ").append(p.args[index]).append(" = ")

  1963                     .append(accessClass("java_lang_Class")).append("(false).toJS(").

  1964                     append(p.args[index]).append(");");

  1965             }

  1966             index++;

  1967         }

  1968         append(") {").append("\n");

  1969         append(toValue.toString());

  1970         if (p.javacall) {

  1971             int lastSlash = jc.getClassName().lastIndexOf('/');

  1972             final String pkg = jc.getClassName().substring(0, lastSlash);

  1973             append(mangleCallbacks(pkg, p.body));

  1974             requireReference(pkg + "/$JsCallbacks$");

  1975         } else {

  1976             append(p.body);

  1977         }

  1978         append("\n}\n");

  1979         return mn;

  1980     }

  1982     private static CharSequence mangleCallbacks(String pkgName, String body) {

  1983         StringBuilder sb = new StringBuilder();

  1984         int pos = 0;

  1985         for (;;) {

  1986             int next = body.indexOf(".@", pos);

  1987             if (next == -1) {

  1988                 sb.append(body.substring(pos));

  1989                 body = sb.toString();

  1990                 break;

  1991             }

  1992             int ident = next;

  1993             while (ident > 0) {

  1994                 if (!Character.isJavaIdentifierPart(body.charAt(--ident))) {

  1995                     ident++;

  1996                     break;

  1997                 }

  1998             }

  1999             String refId = body.substring(ident, next);

  2001             sb.append(body.substring(pos, ident));

  2003             int sigBeg = body.indexOf('(', next);

  2004             int sigEnd = body.indexOf(')', sigBeg);

  2005             int colon4 = body.indexOf("::", next);

  2006             if (sigBeg == -1 || sigEnd == -1 || colon4 == -1) {

  2007                 throw new IllegalStateException("Malformed body " + body);

  2008             }

  2009             String fqn = body.substring(next + 2, colon4);

  2010             String method = body.substring(colon4 + 2, sigBeg);

  2011             String params = body.substring(sigBeg, sigEnd + 1);

  2013             int paramBeg = body.indexOf('(', sigEnd + 1);

  2015             sb.append("vm.").append(mangleClassName(pkgName)).append("_$JsCallbacks$(false)._VM().");

  2016             sb.append(mangleJsCallbacks(fqn, method, params, false));

  2017             sb.append("(").append(refId);

  2018             if (body.charAt(paramBeg + 1) != ')') {

  2019                 sb.append(",");

  2020             }

  2021             pos = paramBeg + 1;

  2022         }

  2023         sb = null;

  2024         pos = 0;

  2025         for (;;) {

  2026             int next = body.indexOf("@", pos);

  2027             if (next == -1) {

  2028                 if (sb == null) {

  2029                     return body;

  2030                 }

  2031                 sb.append(body.substring(pos));

  2032                 return sb;

  2033             }

  2034             if (sb == null) {

  2035                 sb = new StringBuilder();

  2036             }

  2038             sb.append(body.substring(pos, next));

  2040             int sigBeg = body.indexOf('(', next);

  2041             int sigEnd = body.indexOf(')', sigBeg);

  2042             int colon4 = body.indexOf("::", next);

  2043             if (sigBeg == -1 || sigEnd == -1 || colon4 == -1) {

  2044                 throw new IllegalStateException("Malformed body " + body);

  2045             }

  2046             String fqn = body.substring(next + 1, colon4);

  2047             String method = body.substring(colon4 + 2, sigBeg);

  2048             String params = body.substring(sigBeg, sigEnd + 1);

  2050             int paramBeg = body.indexOf('(', sigEnd + 1);

  2052             sb.append("vm.").append(mangleClassName(pkgName)).append("_$JsCallbacks$(false)._VM().");

  2053             sb.append(mangleJsCallbacks(fqn, method, params, true));

  2054             sb.append("(");

  2055             pos = paramBeg + 1;

  2056         }

  2057     }

  2059     static String mangleJsCallbacks(String fqn, String method, String params, boolean isStatic) {

  2060         if (params.startsWith("(")) {

  2061             params = params.substring(1);

  2062         }

  2063         if (params.endsWith(")")) {

  2064             params = params.substring(0, params.length() - 1);

  2065         }

  2066         StringBuilder sb = new StringBuilder();

  2067         final String fqnu = fqn.replace('.', '_');

  2068         final String rfqn = mangleClassName(fqnu);

  2069         final String rm = mangleMethodName(method);

  2070         final String srp;

  2071         {

  2072             StringBuilder pb = new StringBuilder();

  2073             int len = params.length();

  2074             int indx = 0;

  2075             while (indx < len) {

  2076                 char ch = params.charAt(indx);

  2077                 if (ch == '[' || ch == 'L') {

  2078                     int column = params.indexOf(';', indx) + 1;

  2079                     if (column > indx) {

  2080                         String real = params.substring(indx, column);

  2081                         if ("Ljava/lang/String;".equals(real)) {

  2082                             pb.append("Ljava/lang/String;");

  2083                             indx = column;

  2084                             continue;

  2085                         }

  2086                     }

  2087                     pb.append("Ljava/lang/Object;");

  2088                     indx = column;

  2089                 } else {

  2090                     pb.append(ch);

  2091                     indx++;

  2092                 }

  2093             }

  2094             srp = mangleSig(pb.toString());

  2095         }

  2096         final String rp = mangleSig(params);

  2097         final String mrp = mangleMethodName(rp);

  2098         sb.append(rfqn).append("$").append(rm).

  2099             append('$').append(mrp).append("__Ljava_lang_Object_2");

  2100         if (!isStatic) {

  2101             sb.append('L').append(fqnu).append("_2");

  2102         }

  2103         sb.append(srp);

  2104         return sb.toString();

  2105     }

  2107     private static String className(ClassData jc) {

  2108         //return jc.getName().getInternalName().replace('/', '_');

  2109         return mangleClassName(jc.getClassName());

  2110     }

  2112     private static String[] findAnnotation(

  2113         byte[] arr, ClassData cd, final String className,

  2114         final String... attrNames

  2115     ) throws IOException {

  2116         if (arr == null) {

  2117             return null;

  2118         }

  2119         final String[] values = new String[attrNames.length];

  2120         final boolean[] found = { false };

  2121         final String jvmType = "L" + className.replace('.', '/') + ";";

  2122         AnnotationParser ap = new AnnotationParser(false, true) {

  2123             @Override

  2124             protected void visitAttr(String type, String attr, String at, String value) {

  2125                 if (type.equals(jvmType)) {

  2126                     found[0] = true;

  2127                     for (int i = 0; i < attrNames.length; i++) {

  2128                         if (attrNames[i].equals(attr)) {

  2129                             values[i] = value;

  2130                         }

  2131                     }

  2132                 }

  2133             }

  2135         };

  2136         ap.parse(arr, cd);

  2137         return found[0] ? values : null;

  2138     }

  2140     private CharSequence initField(FieldData v) {

  2141         final String is = v.getInternalSig();

  2142         if (is.length() == 1) {

  2143             switch (is.charAt(0)) {

  2144                 case 'S':

  2145                 case 'J':

  2146                 case 'B':

  2147                 case 'Z':

  2148                 case 'C':

  2149                 case 'I': return " = 0;";

  2150                 case 'F':

  2151                 case 'D': return " = 0.0;";

  2152                 default:

  2153                     throw new IllegalStateException(is);

  2154             }

  2155         }

  2156         return " = null;";

  2157     }

  2159     private void generateAnno(ClassData cd, byte[] data) throws IOException {

  2160         AnnotationParser ap = new AnnotationParser(true, false) {

  2161             int[] cnt = new int[32];

  2162             int depth;

  2164             @Override

  2165             protected void visitAnnotationStart(String attrType, boolean top) throws IOException {

  2166                 final String slashType = attrType.substring(1, attrType.length() - 1);

  2167                 requireReference(slashType);

  2169                 if (cnt[depth]++ > 0) {

  2170                     append(",");

  2171                 }

  2172                 if (top) {

  2173                     append('"').append(attrType).append("\" : ");

  2174                 }

  2175                 append("{\n");

  2176                 cnt[++depth] = 0;

  2177             }

  2179             @Override

  2180             protected void visitAnnotationEnd(String type, boolean top) throws IOException {

  2181                 append("\n}\n");

  2182                 depth--;

  2183             }

  2185             @Override

  2186             protected void visitValueStart(String attrName, char type) throws IOException {

  2187                 if (cnt[depth]++ > 0) {

  2188                     append(",\n");

  2189                 }

  2190                 cnt[++depth] = 0;

  2191                 if (attrName != null) {

  2192                     append('"').append(attrName).append("\" : ");

  2193                 }

  2194                 if (type == '[') {

  2195                     append("[");

  2196                 }

  2197             }

  2199             @Override

  2200             protected void visitValueEnd(String attrName, char type) throws IOException {

  2201                 if (type == '[') {

  2202                     append("]");

  2203                 }

  2204                 depth--;

  2205             }

  2207             @Override

  2208             protected void visitAttr(String type, String attr, String attrType, String value)

  2209             throws IOException {

  2210                 if (attr == null && value == null) {

  2211                     return;

  2212                 }

  2213                 append(value);

  2214             }

  2216             @Override

  2217             protected void visitEnumAttr(String type, String attr, String attrType, String value)

  2218             throws IOException {

  2219                 final String slashType = attrType.substring(1, attrType.length() - 1);

  2220                 requireReference(slashType);

  2222                 final String cn = mangleClassName(slashType);

  2223                 append(accessClassFalse(cn))

  2224                    .append("['valueOf__L").

  2225                     append(cn).

  2226                     append("_2Ljava_lang_String_2']('").

  2227                     append(value).

  2228                     append("')");

  2229             }

  2230         };

  2231         ap.parse(data, cd);

  2232     }

  2234     private static String outputArg(Appendable out, String[] args, int indx) throws IOException {

  2235         final String name = args[indx];

  2236         if (name == null) {

  2237             return "";

  2238         }

  2239         if (name.contains(",")) {

  2240             throw new IOException("Wrong parameter with ',': " + name);

  2241         }

  2242         out.append(name);

  2243         return ",";

  2244     }

  2246     final void emitNoFlush(

  2247         StackMapper sm,

  2248         final String format, final CharSequence... params

  2249     ) throws IOException {

  2250         emitImpl(this, format, params);

  2251     }

  2252     static final void emit(

  2253         StackMapper sm,

  2254         final Appendable out,

  2255         final String format, final CharSequence... params

  2256     ) throws IOException {

  2257         sm.flush(out);

  2258         emitImpl(out, format, params);

  2259     }

  2260     static void emitImpl(final Appendable out,

  2261                              final String format,

  2262                              final CharSequence... params) throws IOException {

  2263         final int length = format.length();

  2265         int processed = 0;

  2266         int paramOffset = format.indexOf('@');

  2267         while ((paramOffset != -1) && (paramOffset < (length - 1))) {

  2268             final char paramChar = format.charAt(paramOffset + 1);

  2269             if ((paramChar >= '1') && (paramChar <= '9')) {

  2270                 final int paramIndex = paramChar - '0' - 1;

  2272                 out.append(format, processed, paramOffset);

  2273                 out.append(params[paramIndex]);

  2275                 ++paramOffset;

  2276                 processed = paramOffset + 1;

  2277             }

  2279             paramOffset = format.indexOf('@', paramOffset + 1);

  2280         }

  2282         out.append(format, processed, length);

  2283     }

  2285     private void generateCatch(TrapData[] traps, int current, int topMostLabel) throws IOException {

  2286         append("} catch (e) {\n");

  2287         int finallyPC = -1;

  2288         for (TrapData e : traps) {

  2289             if (e == null) {

  2290                 break;

  2291             }

  2292             if (e.catch_cpx != 0) { //not finally

  2293                 final String classInternalName = jc.getClassName(e.catch_cpx);

  2294                 addReference(classInternalName);

  2295                 append("e = vm.java_lang_Class(false).bck2BrwsrThrwrbl(e);");

  2296                 append("if (e['$instOf_" + mangleClassName(classInternalName) + "']) {");

  2297                 append("var stA0 = e;");

  2298                 goTo(this, current, e.handler_pc, topMostLabel);

  2299                 append("}\n");

  2300             } else {

  2301                 finallyPC = e.handler_pc;

  2302             }

  2303         }

  2304         if (finallyPC == -1) {

  2305             append("throw e;");

  2306         } else {

  2307             append("var stA0 = e;");

  2308             goTo(this, current, finallyPC, topMostLabel);

  2309         }

  2310         append("\n}");

  2311     }

  2313     private static void goTo(Appendable out, int current, int to, int canBack) throws IOException {

  2314         if (to < current) {

  2315             if (canBack < to) {

  2316                 out.append("{ gt = 0; continue X_" + to + "; }");

  2317             } else {

  2318                 out.append("{ gt = " + to + "; continue X_0; }");

  2319             }

  2320         } else {

  2321             out.append("{ gt = " + to + "; break IF; }");

  2322         }

  2323     }

  2325     private static void emitIf(

  2326         StackMapper sm,

  2327         Appendable out, String pattern,

  2328         CharSequence param,

  2329         int current, int to, int canBack

  2330     ) throws IOException {

  2331         sm.flush(out);

  2332         emitImpl(out, pattern, param);

  2333         goTo(out, current, to, canBack);

  2334     }

  2336     private void generateNewArray(int atype, final StackMapper smapper) throws IOException, IllegalStateException {

  2337         String jvmType;

  2338         switch (atype) {

  2339             case 4: jvmType = "[Z"; break;

  2340             case 5: jvmType = "[C"; break;

  2341             case 6: jvmType = "[F"; break;

  2342             case 7: jvmType = "[D"; break;

  2343             case 8: jvmType = "[B"; break;

  2344             case 9: jvmType = "[S"; break;

  2345             case 10: jvmType = "[I"; break;

  2346             case 11: jvmType = "[J"; break;

  2347             default: throw new IllegalStateException("Array type: " + atype);

  2348         }

  2349         emit(smapper, this,

  2350             "var @2 = Array.prototype['newArray__Ljava_lang_Object_2ZLjava_lang_String_2Ljava_lang_Object_2I'](true, '@3', null, @1);",

  2351              smapper.popI(), smapper.pushA(), jvmType);

  2352     }

  2354     private void generateANewArray(int type, final StackMapper smapper) throws IOException {

  2355         String typeName = jc.getClassName(type);

  2356         String ref = "null";

  2357         if (typeName.startsWith("[")) {

  2358             typeName = "'[" + typeName + "'";

  2359         } else {

  2360             ref = "vm." + mangleClassName(typeName);

  2361             typeName = "'[L" + typeName + ";'";

  2362         }

  2363         emit(smapper, this,

  2364             "var @2 = Array.prototype['newArray__Ljava_lang_Object_2ZLjava_lang_String_2Ljava_lang_Object_2I'](false, @3, @4, @1);",

  2365              smapper.popI(), smapper.pushA(), typeName, ref);

  2366     }

  2368     private int generateMultiANewArray(int type, final byte[] byteCodes, int i, final StackMapper smapper) throws IOException {

  2369         String typeName = jc.getClassName(type);

  2370         int dim = readUByte(byteCodes, ++i);

  2371         StringBuilder dims = new StringBuilder();

  2372         dims.append('[');

  2373         for (int d = 0; d < dim; d++) {

  2374             if (d != 0) {

  2375                 dims.insert(1, ",");

  2376             }

  2377             dims.insert(1, smapper.popI());

  2378         }

  2379         dims.append(']');

  2380         String fn = "null";

  2381         if (typeName.charAt(dim) == 'L') {

  2382             fn = "vm." + mangleClassName(typeName.substring(dim + 1, typeName.length() - 1));

  2383         }

  2384         emit(smapper, this,

  2385             "var @2 = Array.prototype['multiNewArray__Ljava_lang_Object_2Ljava_lang_String_2_3ILjava_lang_Object_2']('@3', @1, @4);",

  2386              dims.toString(), smapper.pushA(), typeName, fn

  2387         );

  2388         return i;

  2389     }

  2391     private int generateTableSwitch(int i, final byte[] byteCodes, final StackMapper smapper, int topMostLabel) throws IOException {

  2392         int table = i / 4 * 4 + 4;

  2393         int dflt = i + readInt4(byteCodes, table);

  2394         table += 4;

  2395         int low = readInt4(byteCodes, table);

  2396         table += 4;

  2397         int high = readInt4(byteCodes, table);

  2398         table += 4;

  2399         final CharSequence swVar = smapper.popValue();

  2400         smapper.flush(this);

  2401         append("switch (").append(swVar).append(") {\n");

  2402         while (low <= high) {

  2403             int offset = i + readInt4(byteCodes, table);

  2404             table += 4;

  2405             append("  case " + low).append(":"); goTo(this, i, offset, topMostLabel); append('\n');

  2406             low++;

  2407         }

  2408         append("  default: ");

  2409         goTo(this, i, dflt, topMostLabel);

  2410         append("\n}");

  2411         i = table - 1;

  2412         return i;

  2413     }

  2415     private int generateLookupSwitch(int i, final byte[] byteCodes, final StackMapper smapper, int topMostLabel) throws IOException {

  2416         int table = i / 4 * 4 + 4;

  2417         int dflt = i + readInt4(byteCodes, table);

  2418         table += 4;

  2419         int n = readInt4(byteCodes, table);

  2420         table += 4;

  2421         final CharSequence swVar = smapper.popValue();

  2422         smapper.flush(this);

  2423         append("switch (").append(swVar).append(") {\n");

  2424         while (n-- > 0) {

  2425             int cnstnt = readInt4(byteCodes, table);

  2426             table += 4;

  2427             int offset = i + readInt4(byteCodes, table);

  2428             table += 4;

  2429             append("  case " + cnstnt).append(": "); goTo(this, i, offset, topMostLabel); append('\n');

  2430         }

  2431         append("  default: ");

  2432         goTo(this, i, dflt, topMostLabel);

  2433         append("\n}");

  2434         i = table - 1;

  2435         return i;

  2436     }

  2438     private void generateInstanceOf(int indx, final StackMapper smapper) throws IOException {

  2439         String type = jc.getClassName(indx);

  2440         if (!type.startsWith("[")) {

  2441             emit(smapper, this,

  2442                     "var @2 = @1 != null && @1['$instOf_@3'] ? 1 : 0;",

  2443                  smapper.popA(), smapper.pushI(),

  2444                  mangleClassName(type));

  2445         } else {

  2446             int cnt = 0;

  2447             while (type.charAt(cnt) == '[') {

  2448                 cnt++;

  2449             }

  2450             if (type.charAt(cnt) == 'L') {

  2451                 String component = type.substring(cnt + 1, type.length() - 1);

  2452                 requireReference(component);

  2453                 type = "vm." + mangleClassName(component);

  2454                 emit(smapper, this,

  2455                     "var @2 = Array.prototype['isInstance__ZLjava_lang_Object_2ILjava_lang_Object_2'](@1, @4, @3);",

  2456                     smapper.popA(), smapper.pushI(),

  2457                     type, "" + cnt

  2458                 );

  2459             } else {

  2460                 emit(smapper, this,

  2461                     "var @2 = Array.prototype['isInstance__ZLjava_lang_Object_2Ljava_lang_String_2'](@1, '@3');",

  2462                     smapper.popA(), smapper.pushI(), type

  2463                 );

  2464             }

  2465         }

  2466     }

  2468     private void generateCheckcast(int indx, final StackMapper smapper) throws IOException {

  2469         String type = jc.getClassName(indx);

  2470         if (!type.startsWith("[")) {

  2471             emitNoFlush(smapper,

  2472                  "if (@1 !== null && !@1['$instOf_@2']) vm.java_lang_Class(false).castEx();",

  2473                  smapper.getT(0, VarType.REFERENCE, false), mangleClassName(type));

  2474         } else {

  2475             int cnt = 0;

  2476             while (type.charAt(cnt) == '[') {

  2477                 cnt++;

  2478             }

  2479             if (type.charAt(cnt) == 'L') {

  2480                 String component = type.substring(cnt + 1, type.length() - 1);

  2481                 requireReference(component);

  2482                 type = "vm." + mangleClassName(component);

  2483                 emitNoFlush(smapper,

  2484                     "if (@1 !== null && !Array.prototype['isInstance__ZLjava_lang_Object_2ILjava_lang_Object_2'](@1, @3, @2)) vm.java_lang_Class(false).castEx();",

  2485                      smapper.getT(0, VarType.REFERENCE, false), type, "" + cnt

  2486                 );

  2487             } else {

  2488                 emitNoFlush(smapper,

  2489                     "if (@1 !== null && !Array.prototype['isInstance__ZLjava_lang_Object_2Ljava_lang_String_2'](@1, '@2')) vm.java_lang_Class(false).castEx();",

  2490                      smapper.getT(0, VarType.REFERENCE, false), type

  2491                 );

  2492             }

  2493         }

  2494     }

  2496     private void generateByteCodeComment(int prev, int i, final byte[] byteCodes) throws IOException {

  2497         for (int j = prev; j <= i; j++) {

  2498             append(" ");

  2499             final int cc = readUByte(byteCodes, j);

  2500             append(Integer.toString(cc));

  2501         }

  2502     }

  2504     @JavaScriptBody(args = "msg", body = "")

  2505     private static void println(String msg) {

  2506         System.err.println(msg);

  2507     }

  2508 }

author	Jaroslav Tulach <jaroslav.tulach@apidesign.org>
	Tue, 26 Jan 2016 07:28:25 +0100
changeset 1864	44ade87ef2a4
parent 1863	14a122c18d73
child 1878	126d266b2da9
permissions	-rw-r--r--