hg/bck2brwsr: rt/vm/src/main/java/org/apidesign/vm4brwsr/ByteCodeToJavaScript.java@dd4dabfead82

     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 org.apidesign.vm4brwsr.Bck2Brwsr.Flow;

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

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

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

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

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

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

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

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

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

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

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

    36  *

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

    38  */

    39 abstract class ByteCodeToJavaScript implements Appendable {

    40     private ClassData jc;

    41     private final Appendable out;

    42     private final StringArray classRefs = new StringArray();

    43     private boolean outChanged;

    44     private boolean callbacks;

    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 (jc.getClassName().replace('/', '_').equals(classOperation)) {

   101             return "c";

   102         }

   103         classRefs.addIfMissing(classOperation);

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

   105     }

   107     protected String accessField(String object, String mangledName,

   108                                  String[] fieldInfoName) throws IOException {

   109         return object + "." + mangledName;

   110     }

   112     protected String accessStaticMethod(

   113                              String object,

   114                              String mangledName,

   115                              String[] fieldInfoName) throws IOException {

   116         return object + "." + mangledName;

   117     }

   119     protected String accessVirtualMethod(

   120             String object,

   121             String mangledName,

   122             String[] fieldInfoName,

   123             int params

   124     ) throws IOException {

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

   126     }

   128     protected void declaredClass(ClassData classData, String mangledName)

   129             throws IOException {

   130     }

   132     protected void declaredField(FieldData fieldData,

   133                                  String destObject,

   134                                  String mangledName) throws IOException {

   135     }

   137     protected void declaredMethod(MethodData methodData,

   138                                   String destObject,

   139                                   String mangledName) throws IOException {

   140     }

   142     /** Prints out a debug message.

   143      *

   144      * @param msg the message

   145      * @return true if the message has been printed

   146      * @throws IOException

   147      */

   148     boolean debug(String msg) throws IOException {

   149         append(msg);

   150         return true;

   151     }

   153     /**

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

   155      *

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

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

   158      *

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

   160      */

   162     public String compile(InputStream classFile) throws IOException {

   163         return compile(new ClassData(classFile));

   164     }

   166     protected String compile(ClassData classData) throws IOException {

   167         this.jc = classData;

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

   169         try {

   170             return compileImpl(cn);

   171         } catch (IOException ex) {

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

   173         }

   174     }

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

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

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

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

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

   181             );

   182         }

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

   184         {

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

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

   187                 "resource", "processByteCode"

   188             );

   189             if (arr != null) {

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

   191                     requireScript(arr[0]);

   192                 }

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

   194                     return null;

   195                 }

   196             }

   197         }

   198         final String jsResource;

   199         {

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

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

   202                 "value"

   203             );

   204             if (arr != null) {

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

   206                     jsResource = arr[0];

   207                 } else {

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

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

   210                 }

   211             } else {

   212                 jsResource = null;

   213             }

   214         }

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

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

   217             "container", "prototype"

   218         );

   219         StringArray toInitilize = new StringArray();

   220         final String className = className(jc);

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

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

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

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

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

   226         if (proto == null) {

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

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

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

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

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

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

   233         } else {

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

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

   236                 proto[0] = "p";

   237             }

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

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

   240         }

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

   242             if (v.isStatic()) {

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

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

   245                         continue;

   246                     }

   247                 }

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

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

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

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

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

   253             } else {

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

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

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

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

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

   259                     .append("; };");

   260             }

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

   263         }

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

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

   266             if (javaScriptOnly(onlyArr)) continue;

   267             String destObject;

   268             String mn;

   269             append("\n    ");

   270             if (m.isStatic()) {

   271                 destObject = "c";

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

   273             } else {

   274                 if (m.isConstructor()) {

   275                     destObject = "CLS";

   276                     mn = generateInstanceMethod(destObject, m);

   277                 } else {

   278                     destObject = "c";

   279                     mn = generateInstanceMethod(destObject, m);

   280                 }

   281             }

   282             declaredMethod(m, destObject, mn);

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

   284             if (runAnno != null) {

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

   286                 generateAnno(jc, runAnno);

   287                 append("\n    };");

   288             }

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

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

   291         }

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

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

   294         String instOfName = "$instOf_" + className;

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

   296         if (jc.isInterface()) {

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

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

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

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

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

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

   303                 }

   304             }

   305         }

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

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

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

   309             requireReference(superInterface);

   310         }

   311         append("\n    }");

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

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

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

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

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

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

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

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

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

   321         {

   322             boolean first = true;

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

   324                 if (!first) {

   325                     append(",");

   326                 }

   327                 requireReference(intrfc);

   328                 String mangledIface = mangleClassName(intrfc);

   329                 append("\n        ");

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

   331                 first = false;

   332             }

   333         }

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

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

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

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

   338         if (classAnno != null) {

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

   340             generateAnno(jc, classAnno);

   341             append("\n    };");

   342         }

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

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

   345         }

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

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

   348         }

   349         classRefs.clear();

   351         if (jsResource != null) {

   352             requireResource(jsResource);

   353         }

   355         append("\n  }");

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

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

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

   359         append("\n    }");

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

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

   362             if (javaScriptOnly(onlyArr)) continue;

   363             if (!v.isStatic()) {

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

   365                     append(className).append('_').

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

   367             }

   368         }

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

   370         append("\n  }");

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

   372         append("\n};");

   374         declaredClass(jc, className);

   376 //        StringBuilder sb = new StringBuilder();

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

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

   379 //        }

   380         return "";

   381     }

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

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

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

   386             "name", "value"

   387         );

   388         if (only != null) {

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

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

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

   392             }

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

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

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

   396             }

   397             return true;

   398         }

   399         return false;

   400     }

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

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

   403         if (jsb != null) {

   404             return jsb;

   405         }

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

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

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

   409             if (defineProp) {

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

   411             } else {

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

   413             }

   414         }

   415         return mn;

   416     }

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

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

   420         if (jsb != null) {

   421             return jsb;

   422         }

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

   424         generateMethod(destObject, mn, m);

   425         return mn;

   426     }

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

   429             throws IOException {

   430         final StackMapIterator stackMapIterator = m.createStackMapIterator();

   431         TrapDataIterator trap = m.getTrapDataIterator();

   432         final LocalsMapper lmapper =

   433                 new LocalsMapper(stackMapIterator.getArguments());

   435         boolean defineProp =

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

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

   439         if (defineProp) {

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

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

   442         } else {

   443             append("m = ").append(destObject).append(".").append(name).append(" = ");

   444         }

   445         Flow flow = checkFlow(m);

   446         if (flow != null) {

   447             // OK, assume generate

   448             if (defineProp) {

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

   450             } else {

   451                 append("\n;");

   452             }

   453             return defineProp;

   454         }

   455         append("function(");

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

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

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

   460         if (byteCodes == null) {

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

   462                this

   463                .append(jc.getClassName()).append('.')

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

   465             }

   466             if (defineProp) {

   467                 append("}});");

   468             } else {

   469                 append("};");

   470             }

   471             return defineProp;

   472         }

   474         final StackMapper smapper = new StackMapper();

   476         if (!m.isStatic()) {

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

   478         }

   480         int lastStackFrame;

   481         TrapData[] previousTrap = null;

   482         boolean wide = false;

   483         boolean didBranches;

   484         if (stackMapIterator.isEmpty()) {

   485             didBranches = false;

   486             lastStackFrame = 0;

   487         } else {

   488             lastStackFrame = -1;

   489             if (flow == null) {

   490                 didBranches = true;

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

   492             } else {

   493                 didBranches = false;

   494             }

   495         }

   497         int openBraces = 0;

   498         int topMostLabel = 0;

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

   500             int prev = i;

   501             outChanged = false;

   502             stackMapIterator.advanceTo(i);

   503             boolean changeInCatch = trap.advanceTo(i);

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

   505                 if (previousTrap != null) {

   506                     generateCatch(previousTrap, flow, i, topMostLabel);

   507                     previousTrap = null;

   508                 }

   509             }

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

   511                 smapper.flush(this);

   512                 if (flow == null && i != 0) {

   513                     append("    }\n");

   514                 }

   515                 if (openBraces > 64) {

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

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

   518                     }

   519                     openBraces = 1;

   520                     topMostLabel = i;

   521                 }

   523                 lastStackFrame = stackMapIterator.getFrameIndex();

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

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

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

   527                 openBraces++;

   528                 changeInCatch = true;

   529             } else {

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

   531             }

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

   533                 append("try {");

   534                 previousTrap = trap.current();

   535             }

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

   537             switch (c) {

   538                 case opc_aload_0:

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

   540                     break;

   541                 case opc_iload_0:

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

   543                     break;

   544                 case opc_lload_0:

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

   546                     break;

   547                 case opc_fload_0:

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

   549                     break;

   550                 case opc_dload_0:

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

   552                     break;

   553                 case opc_aload_1:

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

   555                     break;

   556                 case opc_iload_1:

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

   558                     break;

   559                 case opc_lload_1:

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

   561                     break;

   562                 case opc_fload_1:

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

   564                     break;

   565                 case opc_dload_1:

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

   567                     break;

   568                 case opc_aload_2:

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

   570                     break;

   571                 case opc_iload_2:

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

   573                     break;

   574                 case opc_lload_2:

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

   576                     break;

   577                 case opc_fload_2:

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

   579                     break;

   580                 case opc_dload_2:

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

   582                     break;

   583                 case opc_aload_3:

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

   585                     break;

   586                 case opc_iload_3:

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

   588                     break;

   589                 case opc_lload_3:

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

   591                     break;

   592                 case opc_fload_3:

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

   594                     break;

   595                 case opc_dload_3:

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

   597                     break;

   598                 case opc_iload: {

   599                     ++i;

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

   601                                           : readUByte(byteCodes, i);

   602                     wide = false;

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

   604                     break;

   605                 }

   606                 case opc_lload: {

   607                     ++i;

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

   609                                           : readUByte(byteCodes, i);

   610                     wide = false;

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

   612                     break;

   613                 }

   614                 case opc_fload: {

   615                     ++i;

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

   617                                           : readUByte(byteCodes, i);

   618                     wide = false;

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

   620                     break;

   621                 }

   622                 case opc_dload: {

   623                     ++i;

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

   625                                           : readUByte(byteCodes, i);

   626                     wide = false;

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

   628                     break;

   629                 }

   630                 case opc_aload: {

   631                     ++i;

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

   633                                           : readUByte(byteCodes, i);

   634                     wide = false;

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

   636                     break;

   637                 }

   638                 case opc_istore: {

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

   645                     break;

   646                 }

   647                 case opc_lstore: {

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

   654                     break;

   655                 }

   656                 case opc_fstore: {

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

   663                     break;

   664                 }

   665                 case opc_dstore: {

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

   672                     break;

   673                 }

   674                 case opc_astore: {

   675                     ++i;

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

   677                                           : readUByte(byteCodes, i);

   678                     wide = false;

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

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

   681                     break;

   682                 }

   683                 case opc_astore_0:

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

   685                     break;

   686                 case opc_istore_0:

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

   688                     break;

   689                 case opc_lstore_0:

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

   691                     break;

   692                 case opc_fstore_0:

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

   694                     break;

   695                 case opc_dstore_0:

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

   697                     break;

   698                 case opc_astore_1:

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

   700                     break;

   701                 case opc_istore_1:

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

   703                     break;

   704                 case opc_lstore_1:

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

   706                     break;

   707                 case opc_fstore_1:

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

   709                     break;

   710                 case opc_dstore_1:

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

   712                     break;

   713                 case opc_astore_2:

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

   715                     break;

   716                 case opc_istore_2:

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

   718                     break;

   719                 case opc_lstore_2:

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

   721                     break;

   722                 case opc_fstore_2:

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

   724                     break;

   725                 case opc_dstore_2:

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

   727                     break;

   728                 case opc_astore_3:

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

   730                     break;

   731                 case opc_istore_3:

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

   733                     break;

   734                 case opc_lstore_3:

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

   736                     break;

   737                 case opc_fstore_3:

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

   739                     break;

   740                 case opc_dstore_3:

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

   742                     break;

   743                 case opc_iadd:

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

   745                     break;

   746                 case opc_ladd:

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

   748                     break;

   749                 case opc_fadd:

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

   751                     break;

   752                 case opc_dadd:

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

   754                     break;

   755                 case opc_isub:

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

   757                     break;

   758                 case opc_lsub:

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

   760                     break;

   761                 case opc_fsub:

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

   763                     break;

   764                 case opc_dsub:

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

   766                     break;

   767                 case opc_imul:

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

   769                     break;

   770                 case opc_lmul:

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

   772                     break;

   773                 case opc_fmul:

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

   775                     break;

   776                 case opc_dmul:

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

   778                     break;

   779                 case opc_idiv:

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

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

   782                     break;

   783                 case opc_ldiv:

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

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

   786                     break;

   787                 case opc_fdiv:

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

   789                     break;

   790                 case opc_ddiv:

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

   792                     break;

   793                 case opc_irem:

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

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

   796                     break;

   797                 case opc_lrem:

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

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

   800                     break;

   801                 case opc_frem:

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

   803                     break;

   804                 case opc_drem:

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

   806                     break;

   807                 case opc_iand:

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

   809                     break;

   810                 case opc_land:

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

   812                     break;

   813                 case opc_ior:

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

   815                     break;

   816                 case opc_lor:

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

   818                     break;

   819                 case opc_ixor:

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

   821                     break;

   822                 case opc_lxor:

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

   824                     break;

   825                 case opc_ineg:

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

   827                     break;

   828                 case opc_lneg:

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

   830                     break;

   831                 case opc_fneg:

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

   833                     break;

   834                 case opc_dneg:

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

   836                     break;

   837                 case opc_ishl:

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

   839                     break;

   840                 case opc_lshl:

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

   842                     break;

   843                 case opc_ishr:

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

   845                     break;

   846                 case opc_lshr:

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

   848                     break;

   849                 case opc_iushr:

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

   851                     break;

   852                 case opc_lushr:

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

   854                     break;

   855                 case opc_iinc: {

   856                     ++i;

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

   858                                              : readUByte(byteCodes, i);

   859                     ++i;

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

   861                                             : byteCodes[i];

   862                     wide = false;

   863                     if (incrBy == 1) {

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

   865                     } else {

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

   867                              lmapper.getI(varIndx),

   868                              Integer.toString(incrBy));

   869                     }

   870                     break;

   871                 }

   872                 case opc_return:

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

   874                     break;

   875                 case opc_ireturn:

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

   877                     break;

   878                 case opc_lreturn:

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

   880                     break;

   881                 case opc_freturn:

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

   883                     break;

   884                 case opc_dreturn:

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

   886                     break;

   887                 case opc_areturn:

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

   889                     break;

   890                 case opc_i2l:

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

   892                     break;

   893                 case opc_i2f:

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

   895                     break;

   896                 case opc_i2d:

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

   898                     break;

   899                 case opc_l2i:

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

   901                     break;

   902                     // max int check?

   903                 case opc_l2f:

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

   905                     break;

   906                 case opc_l2d:

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

   908                     break;

   909                 case opc_f2d:

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

   911                          smapper.getF(0));

   912                     break;

   913                 case opc_d2f:

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

   915                          smapper.getD(0));

   916                     break;

   917                 case opc_f2i:

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

   919                          smapper.getF(0));

   920                     break;

   921                 case opc_f2l:

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

   923                          smapper.getF(0));

   924                     break;

   925                 case opc_d2i:

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

   927                          smapper.getD(0));

   928                     break;

   929                 case opc_d2l:

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

   931                     break;

   932                 case opc_i2b:

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

   934                     break;

   935                 case opc_i2c:

   936                 case opc_i2s:

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

   938                     break;

   939                 case opc_aconst_null:

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

   941                     break;

   942                 case opc_iconst_m1:

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

   944                     break;

   945                 case opc_iconst_0:

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

   947                     break;

   948                 case opc_dconst_0:

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

   950                     break;

   951                 case opc_lconst_0:

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

   953                     break;

   954                 case opc_fconst_0:

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

   956                     break;

   957                 case opc_iconst_1:

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

   959                     break;

   960                 case opc_lconst_1:

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

   962                     break;

   963                 case opc_fconst_1:

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

   965                     break;

   966                 case opc_dconst_1:

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

   968                     break;

   969                 case opc_iconst_2:

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

   971                     break;

   972                 case opc_fconst_2:

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

   974                     break;

   975                 case opc_iconst_3:

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

   977                     break;

   978                 case opc_iconst_4:

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

   980                     break;

   981                 case opc_iconst_5:

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

   983                     break;

   984                 case opc_ldc: {

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

   986                     String v = encodeConstant(indx);

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

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

   989                     break;

   990                 }

   991                 case opc_ldc_w:

   992                 case opc_ldc2_w: {

   993                     int indx = readUShortArg(byteCodes, i);

   994                     i += 2;

   995                     String v = encodeConstant(indx);

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

   997                     if (type == VarType.LONG) {

   998                         final Long lv = new Long(v);

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

  1000                         final int hi = (int)(lv.longValue() >> 32);

  1001                         if (hi == 0) {

  1002                             smapper.assign(this, VarType.LONG, "0x" + Integer.toHexString(low));

  1003                         } else {

  1004                             smapper.assign(this, VarType.LONG,

  1005                                 "0x" + Integer.toHexString(hi) + ".next32(0x" +

  1006                                     Integer.toHexString(low) + ")"

  1007                             );

  1008                         }

  1009                     } else {

  1010                         smapper.assign(this, type, v);

  1011                     }

  1012                     break;

  1013                 }

  1014                 case opc_lcmp:

  1015                     smapper.replace(this, VarType.INTEGER, "(@2).compare64(@1)", smapper.popL(), smapper.getL(0));

  1016                     break;

  1017                 case opc_fcmpl:

  1018                 case opc_fcmpg:

  1019                     emit(smapper, this, "var @3 = (@2 == @1) ? 0 : ((@2 < @1) ? -1 : 1);",

  1020                          smapper.popF(), smapper.popF(), smapper.pushI());

  1021                     break;

  1022                 case opc_dcmpl:

  1023                 case opc_dcmpg:

  1024                     emit(smapper, this, "var @3 = (@2 == @1) ? 0 : ((@2 < @1) ? -1 : 1);",

  1025                          smapper.popD(), smapper.popD(), smapper.pushI());

  1026                     break;

  1027                 case opc_if_acmpeq:

  1028                     i = generateIf(smapper, flow, byteCodes, i, smapper.popA(), smapper.popA(),

  1029                                    "===", topMostLabel);

  1030                     break;

  1031                 case opc_if_acmpne:

  1032                     i = generateIf(smapper, flow, byteCodes, i, smapper.popA(), smapper.popA(),

  1033                                    "!==", topMostLabel);

  1034                     break;

  1035                 case opc_if_icmpeq:

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

  1037                                    "==", topMostLabel);

  1038                     break;

  1039                 case opc_ifeq: {

  1040                     int indx = i + readShortArg(byteCodes, i);

  1041                     emitIf(smapper, flow, this, "if ((@1) == 0) ",

  1042                          smapper.popI(), i, indx, topMostLabel);

  1043                     i += 2;

  1044                     break;

  1045                 }

  1046                 case opc_ifne: {

  1047                     int indx = i + readShortArg(byteCodes, i);

  1048                     emitIf(smapper, flow, this, "if ((@1) != 0) ",

  1049                          smapper.popI(), i, indx, topMostLabel);

  1050                     i += 2;

  1051                     break;

  1052                 }

  1053                 case opc_iflt: {

  1054                     int indx = i + readShortArg(byteCodes, i);

  1055                     emitIf(smapper, flow, this, "if ((@1) < 0) ",

  1056                          smapper.popI(), i, indx, topMostLabel);

  1057                     i += 2;

  1058                     break;

  1059                 }

  1060                 case opc_ifle: {

  1061                     int indx = i + readShortArg(byteCodes, i);

  1062                     emitIf(smapper, flow, this, "if ((@1) <= 0) ",

  1063                          smapper.popI(), i, indx, topMostLabel);

  1064                     i += 2;

  1065                     break;

  1066                 }

  1067                 case opc_ifgt: {

  1068                     int indx = i + readShortArg(byteCodes, i);

  1069                     emitIf(smapper, flow, this, "if ((@1) > 0) ",

  1070                          smapper.popI(), i, indx, topMostLabel);

  1071                     i += 2;

  1072                     break;

  1073                 }

  1074                 case opc_ifge: {

  1075                     int indx = i + readShortArg(byteCodes, i);

  1076                     emitIf(smapper, flow, this, "if ((@1) >= 0) ",

  1077                          smapper.popI(), i, indx, topMostLabel);

  1078                     i += 2;

  1079                     break;

  1080                 }

  1081                 case opc_ifnonnull: {

  1082                     int indx = i + readShortArg(byteCodes, i);

  1083                     emitIf(smapper, flow, this, "if ((@1) !== null) ",

  1084                          smapper.popA(), i, indx, topMostLabel);

  1085                     i += 2;

  1086                     break;

  1087                 }

  1088                 case opc_ifnull: {

  1089                     int indx = i + readShortArg(byteCodes, i);

  1090                     emitIf(smapper, flow, this, "if ((@1) === null) ",

  1091                          smapper.popA(), i, indx, topMostLabel);

  1092                     i += 2;

  1093                     break;

  1094                 }

  1095                 case opc_if_icmpne:

  1096                     i = generateIf(smapper, flow, byteCodes, i, smapper.popI(), smapper.popI(),

  1097                                    "!=", topMostLabel);

  1098                     break;

  1099                 case opc_if_icmplt:

  1100                     i = generateIf(smapper, flow, byteCodes, i, smapper.popI(), smapper.popI(),

  1101                                    "<", topMostLabel);

  1102                     break;

  1103                 case opc_if_icmple:

  1104                     i = generateIf(smapper, flow, byteCodes, i, smapper.popI(), smapper.popI(),

  1105                                    "<=", topMostLabel);

  1106                     break;

  1107                 case opc_if_icmpgt:

  1108                     i = generateIf(smapper, flow, byteCodes, i, smapper.popI(), smapper.popI(),

  1109                                    ">", topMostLabel);

  1110                     break;

  1111                 case opc_if_icmpge:

  1112                     i = generateIf(smapper, flow, byteCodes, i, smapper.popI(), smapper.popI(),

  1113                                    ">=", topMostLabel);

  1114                     break;

  1115                 case opc_goto: {

  1116                     smapper.flush(this);

  1117                     if (flow == null) {

  1118                         int indx = i + readShortArg(byteCodes, i);

  1119                         goTo(this, flow, i, indx, topMostLabel);

  1120                     }

  1121                     i += 2;

  1122                     break;

  1123                 }

  1124                 case opc_lookupswitch: {

  1125                     i = generateLookupSwitch(i, byteCodes, smapper, flow, topMostLabel);

  1126                     break;

  1127                 }

  1128                 case opc_tableswitch: {

  1129                     i = generateTableSwitch(i, byteCodes, smapper, flow, topMostLabel);

  1130                     break;

  1131                 }

  1132                 case opc_invokeinterface: {

  1133                     i = invokeVirtualMethod(byteCodes, i, smapper) + 2;

  1134                     break;

  1135                 }

  1136                 case opc_invokevirtual:

  1137                     i = invokeVirtualMethod(byteCodes, i, smapper);

  1138                     break;

  1139                 case opc_invokespecial:

  1140                     i = invokeStaticMethod(byteCodes, i, smapper, false);

  1141                     break;

  1142                 case opc_invokestatic:

  1143                     i = invokeStaticMethod(byteCodes, i, smapper, true);

  1144                     break;

  1145                 case opc_invokedynamic: {

  1146                     int indx = readUShortArg(byteCodes, i);

  1147                     println("invoke dynamic: " + indx);

  1148                     ByteCodeParser.CPX2 c2 = jc.getCpoolEntry(indx);

  1149                     BootMethodData bm = jc.getBootMethod(c2.cpx1);

  1150                     CPX2 methodHandle = jc.getCpoolEntry(bm.method);

  1151                     println("  type: " + methodHandle.cpx1);

  1152                     String[] mi = jc.getFieldInfoName(methodHandle.cpx2);

  1153                     String mcn = mangleClassName(mi[0]);

  1154                     char[] returnType = {'V'};

  1155                     StringBuilder cnt = new StringBuilder();

  1156                     String mn = findMethodName(mi, cnt, returnType);

  1157                     StringBuilder sb = new StringBuilder();

  1158                     sb.append("We don't handle invokedynamic, need to preprocess ahead-of-time:\n");

  1159                     sb.append("  mi[0]: ").append(mi[0]).append("\n");

  1160                     sb.append("  mi[1]: ").append(mi[1]).append("\n");

  1161                     sb.append("  mi[2]: ").append(mi[2]).append("\n");

  1162                     sb.append("  mn   : ").append(mn).append("\n");

  1163                     sb.append("  name and type: ").append(jc.stringValue(c2.cpx2, true)).append("\n");

  1164                     throw new IOException(sb.toString());

  1165                     /*

  1166                     CPX2 nameAndType = jc.getCpoolEntry(c2.cpx2);

  1167                     String type = jc.StringValue(nameAndType.cpx2);

  1168                     String object = accessClass(mcn) + "(false)";

  1169                     if (mn.startsWith("cons_")) {

  1170                         object += ".constructor";

  1171                     }

  1172                     append("var metHan = ");

  1173                     append(accessStaticMethod(object, mn, mi));

  1174                     append('(');

  1175                     String lookup = accessClass("java_lang_invoke_MethodHandles") + "(false).findFor__Ljava_lang_invoke_MethodHandles$Lookup_2Ljava_lang_Class_2(CLS.$class)";

  1176                     append(lookup);

  1177                     append(", '").append(mi[1]).append("', ");

  1178                     String methodType = accessClass("java_lang_invoke_MethodType") + "(false).fromMethodDescriptorString__Ljava_lang_invoke_MethodType_2Ljava_lang_String_2Ljava_lang_ClassLoader_2(";

  1179                     append(methodType).append("'").append(type).append("', null)");

  1180 //                    if (numArguments > 0) {

  1181 //                        append(vars[0]);

  1182 //                        for (int j = 1; j < numArguments; ++j) {

  1183 //                            append(", ");

  1184 //                            append(vars[j]);

  1185 //                        }

  1186 //                    }

  1187                     append(");");

  1188                     emit(smapper, this, "throw 'Invoke dynamic: ' + @1 + ': ' + metHan;", "" + indx);

  1189                     i += 4;

  1190                     break;

  1191                     */

  1192                 }

  1193                 case opc_new: {

  1194                     int indx = readUShortArg(byteCodes, i);

  1195                     String ci = jc.getClassName(indx);

  1196                     emit(smapper, this, "var @1 = new @2;",

  1197                          smapper.pushA(), accessClass(mangleClassName(ci)));

  1198                     addReference(ci);

  1199                     i += 2;

  1200                     break;

  1201                 }

  1202                 case opc_newarray:

  1203                     int atype = readUByte(byteCodes, ++i);

  1204                     generateNewArray(atype, smapper);

  1205                     break;

  1206                 case opc_anewarray: {

  1207                     int type = readUShortArg(byteCodes, i);

  1208                     i += 2;

  1209                     generateANewArray(type, smapper);

  1210                     break;

  1211                 }

  1212                 case opc_multianewarray: {

  1213                     int type = readUShortArg(byteCodes, i);

  1214                     i += 2;

  1215                     i = generateMultiANewArray(type, byteCodes, i, smapper);

  1216                     break;

  1217                 }

  1218                 case opc_arraylength:

  1219                     smapper.replace(this, VarType.INTEGER, "(@1).length", smapper.getA(0));

  1220                     break;

  1221                 case opc_lastore:

  1222                     emit(smapper, this, "Array.at(@3, @2, @1);",

  1223                          smapper.popL(), smapper.popI(), smapper.popA());

  1224                     break;

  1225                 case opc_fastore:

  1226                     emit(smapper, this, "Array.at(@3, @2, @1);",

  1227                          smapper.popF(), smapper.popI(), smapper.popA());

  1228                     break;

  1229                 case opc_dastore:

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

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

  1232                     break;

  1233                 case opc_aastore:

  1234                     emit(smapper, this, "Array.at(@3, @2, @1);",

  1235                          smapper.popA(), smapper.popI(), smapper.popA());

  1236                     break;

  1237                 case opc_iastore:

  1238                 case opc_bastore:

  1239                 case opc_castore:

  1240                 case opc_sastore:

  1241                     emit(smapper, this, "Array.at(@3, @2, @1);",

  1242                          smapper.popI(), smapper.popI(), smapper.popA());

  1243                     break;

  1244                 case opc_laload:

  1245                     smapper.replace(this, VarType.LONG, "Array.at(@2, @1)",

  1246                          smapper.popI(), smapper.getA(0));

  1247                     break;

  1248                 case opc_faload:

  1249                     smapper.replace(this, VarType.FLOAT, "Array.at(@2, @1)",

  1250                          smapper.popI(), smapper.getA(0));

  1251                     break;

  1252                 case opc_daload:

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

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

  1255                     break;

  1256                 case opc_aaload:

  1257                     smapper.replace(this, VarType.REFERENCE, "Array.at(@2, @1)",

  1258                          smapper.popI(), smapper.getA(0));

  1259                     break;

  1260                 case opc_iaload:

  1261                 case opc_baload:

  1262                 case opc_caload:

  1263                 case opc_saload:

  1264                     smapper.replace(this, VarType.INTEGER, "Array.at(@2, @1)",

  1265                          smapper.popI(), smapper.getA(0));

  1266                     break;

  1267                 case opc_pop:

  1268                 case opc_pop2:

  1269                     smapper.pop(1);

  1270                     debug("/* pop */");

  1271                     break;

  1272                 case opc_dup: {

  1273                     final Variable v = smapper.get(0);

  1274                     if (smapper.isDirty()) {

  1275                         emit(smapper, this, "var @1 = @2;", smapper.pushT(v.getType()), v);

  1276                     } else {

  1277                         smapper.assign(this, v.getType(), v);

  1278                     }

  1279                     break;

  1280                 }

  1281                 case opc_dup2: {

  1282                     final Variable vi1 = smapper.get(0);

  1284                     if (vi1.isCategory2()) {

  1285                         emit(smapper, this, "var @1 = @2;",

  1286                              smapper.pushT(vi1.getType()), vi1);

  1287                     } else {

  1288                         final Variable vi2 = smapper.get(1);

  1289                         emit(smapper, this, "var @1 = @2, @3 = @4;",

  1290                              smapper.pushT(vi2.getType()), vi2,

  1291                              smapper.pushT(vi1.getType()), vi1);

  1292                     }

  1293                     break;

  1294                 }

  1295                 case opc_dup_x1: {

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

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

  1298                     final Variable vo3 = smapper.pushT(vi1.getType());

  1299                     final Variable vo2 = smapper.pushT(vi2.getType());

  1300                     final Variable vo1 = smapper.pushT(vi1.getType());

  1302                     emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6;",

  1303                          vo1, vi1, vo2, vi2, vo3, vo1);

  1304                     break;

  1305                 }

  1306                 case opc_dup2_x1: {

  1307                     final Variable vi1 = smapper.pop(this);

  1308                     final Variable vi2 = smapper.pop(this);

  1310                     if (vi1.isCategory2()) {

  1311                         final Variable vo3 = smapper.pushT(vi1.getType());

  1312                         final Variable vo2 = smapper.pushT(vi2.getType());

  1313                         final Variable vo1 = smapper.pushT(vi1.getType());

  1315                         emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6;",

  1316                              vo1, vi1, vo2, vi2, vo3, vo1);

  1317                     } else {

  1318                         final Variable vi3 = smapper.pop(this);

  1319                         final Variable vo5 = smapper.pushT(vi2.getType());

  1320                         final Variable vo4 = smapper.pushT(vi1.getType());

  1321                         final Variable vo3 = smapper.pushT(vi3.getType());

  1322                         final Variable vo2 = smapper.pushT(vi2.getType());

  1323                         final Variable vo1 = smapper.pushT(vi1.getType());

  1325                         emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6,",

  1326                              vo1, vi1, vo2, vi2, vo3, vi3);

  1327                         emit(smapper, this, " @1 = @2, @3 = @4;",

  1328                              vo4, vo1, vo5, vo2);

  1329                     }

  1330                     break;

  1331                 }

  1332                 case opc_dup_x2: {

  1333                     final Variable vi1 = smapper.pop(this);

  1334                     final Variable vi2 = smapper.pop(this);

  1336                     if (vi2.isCategory2()) {

  1337                         final Variable vo3 = smapper.pushT(vi1.getType());

  1338                         final Variable vo2 = smapper.pushT(vi2.getType());

  1339                         final Variable vo1 = smapper.pushT(vi1.getType());

  1341                         emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6;",

  1342                              vo1, vi1, vo2, vi2, vo3, vo1);

  1343                     } else {

  1344                         final Variable vi3 = smapper.pop(this);

  1345                         final Variable vo4 = smapper.pushT(vi1.getType());

  1346                         final Variable vo3 = smapper.pushT(vi3.getType());

  1347                         final Variable vo2 = smapper.pushT(vi2.getType());

  1348                         final Variable vo1 = smapper.pushT(vi1.getType());

  1350                         emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6, @7 = @8;",

  1351                              vo1, vi1, vo2, vi2, vo3, vi3, vo4, vo1);

  1352                     }

  1353                     break;

  1354                 }

  1355                 case opc_dup2_x2: {

  1356                     final Variable vi1 = smapper.pop(this);

  1357                     final Variable vi2 = smapper.pop(this);

  1359                     if (vi1.isCategory2()) {

  1360                         if (vi2.isCategory2()) {

  1361                             final Variable vo3 = smapper.pushT(vi1.getType());

  1362                             final Variable vo2 = smapper.pushT(vi2.getType());

  1363                             final Variable vo1 = smapper.pushT(vi1.getType());

  1365                             emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6;",

  1366                                  vo1, vi1, vo2, vi2, vo3, vo1);

  1367                         } else {

  1368                             final Variable vi3 = smapper.pop(this);

  1369                             final Variable vo4 = smapper.pushT(vi1.getType());

  1370                             final Variable vo3 = smapper.pushT(vi3.getType());

  1371                             final Variable vo2 = smapper.pushT(vi2.getType());

  1372                             final Variable vo1 = smapper.pushT(vi1.getType());

  1374                             emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6, @7 = @8;",

  1375                                  vo1, vi1, vo2, vi2, vo3, vi3, vo4, vo1);

  1376                         }

  1377                     } else {

  1378                         final Variable vi3 = smapper.pop(this);

  1380                         if (vi3.isCategory2()) {

  1381                             final Variable vo5 = smapper.pushT(vi2.getType());

  1382                             final Variable vo4 = smapper.pushT(vi1.getType());

  1383                             final Variable vo3 = smapper.pushT(vi3.getType());

  1384                             final Variable vo2 = smapper.pushT(vi2.getType());

  1385                             final Variable vo1 = smapper.pushT(vi1.getType());

  1387                             emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6,",

  1388                                  vo1, vi1, vo2, vi2, vo3, vi3);

  1389                             emit(smapper, this, " @1 = @2, @3 = @4;",

  1390                                  vo4, vo1, vo5, vo2);

  1391                         } else {

  1392                             final Variable vi4 = smapper.pop(this);

  1393                             final Variable vo6 = smapper.pushT(vi2.getType());

  1394                             final Variable vo5 = smapper.pushT(vi1.getType());

  1395                             final Variable vo4 = smapper.pushT(vi4.getType());

  1396                             final Variable vo3 = smapper.pushT(vi3.getType());

  1397                             final Variable vo2 = smapper.pushT(vi2.getType());

  1398                             final Variable vo1 = smapper.pushT(vi1.getType());

  1400                             emit(smapper, this, "var @1 = @2, @3 = @4, @5 = @6, @7 = @8,",

  1401                                  vo1, vi1, vo2, vi2, vo3, vi3, vo4, vi4);

  1402                             emit(smapper, this, " @1 = @2, @3 = @4;",

  1403                                  vo5, vo1, vo6, vo2);

  1404                         }

  1405                     }

  1406                     break;

  1407                 }

  1408                 case opc_swap: {

  1409                     final Variable vi1 = smapper.get(0);

  1410                     final Variable vi2 = smapper.get(1);

  1412                     if (vi1.getType() == vi2.getType()) {

  1413                         final Variable tmp = smapper.pushT(vi1.getType());

  1415                         emit(smapper, this, "var @1 = @2, @2 = @3, @3 = @1;",

  1416                              tmp, vi1, vi2);

  1417                         smapper.pop(1);

  1418                     } else {

  1419                         smapper.pop(2);

  1420                         smapper.pushT(vi1.getType());

  1421                         smapper.pushT(vi2.getType());

  1422                     }

  1423                     break;

  1424                 }

  1425                 case opc_bipush:

  1426                     smapper.assign(this, VarType.INTEGER,

  1427                         "(" + Integer.toString(byteCodes[++i]) + ")");

  1428                     break;

  1429                 case opc_sipush:

  1430                     smapper.assign(this, VarType.INTEGER,

  1431                         "(" + Integer.toString(readShortArg(byteCodes, i)) + ")"

  1432                     );

  1433                     i += 2;

  1434                     break;

  1435                 case opc_getfield: {

  1436                     int indx = readUShortArg(byteCodes, i);

  1437                     String[] fi = jc.getFieldInfoName(indx);

  1438                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1439                     final String mangleClass = mangleClassName(fi[0]);

  1440                     final String mangleClassAccess = accessClassFalse(mangleClass);

  1441                     smapper.replace(this, type, "@2.call(@1)",

  1442                          smapper.getA(0),

  1443                          accessField(mangleClassAccess,

  1444                                      "_" + fi[1], fi)

  1445                     );

  1446                     i += 2;

  1447                     addReference(fi[0]);

  1448                     break;

  1449                 }

  1450                 case opc_putfield: {

  1451                     int indx = readUShortArg(byteCodes, i);

  1452                     String[] fi = jc.getFieldInfoName(indx);

  1453                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1454                     final String mangleClass = mangleClassName(fi[0]);

  1455                     final String mangleClassAccess = accessClassFalse(mangleClass);

  1456                     emit(smapper, this, "@3.call(@2, @1);",

  1457                          smapper.popT(type),

  1458                          smapper.popA(),

  1459                          accessField(mangleClassAccess,

  1460                                      "_" + fi[1], fi));

  1461                     i += 2;

  1462                     addReference(fi[0]);

  1463                     break;

  1464                 }

  1465                 case opc_getstatic: {

  1466                     int indx = readUShortArg(byteCodes, i);

  1467                     String[] fi = jc.getFieldInfoName(indx);

  1468                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1469                     String ac = accessClassFalse(mangleClassName(fi[0]));

  1470                     String af = accessField(ac, "_" + fi[1], fi);

  1471                     smapper.assign(this, type, af + "()");

  1472                     i += 2;

  1473                     addReference(fi[0]);

  1474                     break;

  1475                 }

  1476                 case opc_putstatic: {

  1477                     int indx = readUShortArg(byteCodes, i);

  1478                     String[] fi = jc.getFieldInfoName(indx);

  1479                     final int type = VarType.fromFieldType(fi[2].charAt(0));

  1480                     emit(smapper, this, "@1._@2(@3);",

  1481                          accessClassFalse(mangleClassName(fi[0])), fi[1],

  1482                          smapper.popT(type));

  1483                     i += 2;

  1484                     addReference(fi[0]);

  1485                     break;

  1486                 }

  1487                 case opc_checkcast: {

  1488                     int indx = readUShortArg(byteCodes, i);

  1489                     generateCheckcast(indx, smapper);

  1490                     i += 2;

  1491                     break;

  1492                 }

  1493                 case opc_instanceof: {

  1494                     int indx = readUShortArg(byteCodes, i);

  1495                     generateInstanceOf(indx, smapper);

  1496                     i += 2;

  1497                     break;

  1498                 }

  1499                 case opc_athrow: {

  1500                     final CharSequence v = smapper.popA();

  1501                     smapper.clear();

  1503                     emit(smapper, this, "{ var @1 = @2; throw @2; }",

  1504                          smapper.pushA(), v);

  1505                     break;

  1506                 }

  1508                 case opc_monitorenter: {

  1509                     debug("/* monitor enter */");

  1510                     smapper.popA();

  1511                     break;

  1512                 }

  1514                 case opc_monitorexit: {

  1515                     debug("/* monitor exit */");

  1516                     smapper.popA();

  1517                     break;

  1518                 }

  1520                 case opc_wide:

  1521                     wide = true;

  1522                     break;

  1524                 default: {

  1525                     wide = false;

  1526                     emit(smapper, this, "throw 'unknown bytecode @1';",

  1527                          Integer.toString(c));

  1528                 }

  1529             }

  1530             if (debug(" //")) {

  1531                 generateByteCodeComment(prev, i, byteCodes);

  1532             }

  1533             if (outChanged) {

  1534                 append("\n");

  1535             }

  1536         }

  1537         if (previousTrap != null) {

  1538             generateCatch(previousTrap, flow, byteCodes.length, topMostLabel);

  1539         }

  1540         if (didBranches) {

  1541             append("\n    }\n");

  1542         }

  1543         while (openBraces-- > 0) {

  1544             append('}');

  1545         }

  1546         if (defineProp) {

  1547             append("\n}});");

  1548         } else {

  1549             append("\n};");

  1550         }

  1551         return defineProp;

  1552     }

  1554     private int generateIf(StackMapper mapper, Flow flow, byte[] byteCodes, int i, final CharSequence v2, final CharSequence v1, final String test, int topMostLabel) throws IOException {

  1555         mapper.flush(this);

  1556         int indx = i + readShortArg(byteCodes, i);

  1557         append("if ((").append(v1)

  1558            .append(") ").append(test).append(" (")

  1559            .append(v2).append(")) ");

  1560         goTo(this, flow, i, indx, topMostLabel);

  1561         return i + 2;

  1562     }

  1564     private int readInt4(byte[] byteCodes, int offset) {

  1565         final int d = byteCodes[offset + 0] << 24;

  1566         final int c = byteCodes[offset + 1] << 16;

  1567         final int b = byteCodes[offset + 2] << 8;

  1568         final int a = byteCodes[offset + 3];

  1569         return (d & 0xff000000) | (c & 0xff0000) | (b & 0xff00) | (a & 0xff);

  1570     }

  1571     private static int readUByte(byte[] byteCodes, int offset) {

  1572         return byteCodes[offset] & 0xff;

  1573     }

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

  1576         return ((byteCodes[offset] & 0xff) << 8)

  1577                     | (byteCodes[offset + 1] & 0xff);

  1578     }

  1579     private static int readUShortArg(byte[] byteCodes, int offsetInstruction) {

  1580         return readUShort(byteCodes, offsetInstruction + 1);

  1581     }

  1583     private static int readShort(byte[] byteCodes, int offset) {

  1584         int signed = byteCodes[offset];

  1585         byte b0 = (byte)signed;

  1586         return (b0 << 8) | (byteCodes[offset + 1] & 0xff);

  1587     }

  1588     private static int readShortArg(byte[] byteCodes, int offsetInstruction) {

  1589         return readShort(byteCodes, offsetInstruction + 1);

  1590     }

  1592     private static void countArgs(String descriptor, char[] returnType, StringBuilder sig, StringBuilder cnt) {

  1593         int i = 0;

  1594         Boolean count = null;

  1595         boolean array = false;

  1596         sig.append("__");

  1597         int firstPos = sig.length();

  1598         while (i < descriptor.length()) {

  1599             char ch = descriptor.charAt(i++);

  1600             switch (ch) {

  1601                 case '(':

  1602                     count = true;

  1603                     continue;

  1604                 case ')':

  1605                     count = false;

  1606                     continue;

  1607                 case 'B':

  1608                 case 'C':

  1609                 case 'D':

  1610                 case 'F':

  1611                 case 'I':

  1612                 case 'J':

  1613                 case 'S':

  1614                 case 'Z':

  1615                     if (count) {

  1616                         if (array) {

  1617                             sig.append("_3");

  1618                         }

  1619                         sig.append(ch);

  1620                         if (ch == 'J' || ch == 'D') {

  1621                             cnt.append('1');

  1622                         } else {

  1623                             cnt.append('0');

  1624                         }

  1625                     } else {

  1626                         sig.insert(firstPos, ch);

  1627                         if (array) {

  1628                             returnType[0] = '[';

  1629                             sig.insert(firstPos, "_3");

  1630                         } else {

  1631                             returnType[0] = ch;

  1632                         }

  1633                     }

  1634                     array = false;

  1635                     continue;

  1636                 case 'V':

  1637                     assert !count;

  1638                     returnType[0] = 'V';

  1639                     sig.insert(firstPos, 'V');

  1640                     continue;

  1641                 case 'L':

  1642                     int next = descriptor.indexOf(';', i);

  1643                     String realSig = mangleSig(descriptor, i - 1, next + 1);

  1644                     if (count) {

  1645                         if (array) {

  1646                             sig.append("_3");

  1647                         }

  1648                         sig.append(realSig);

  1649                         cnt.append('0');

  1650                     } else {

  1651                         sig.insert(firstPos, realSig);

  1652                         if (array) {

  1653                             sig.insert(firstPos, "_3");

  1654                         }

  1655                         returnType[0] = 'L';

  1656                     }

  1657                     i = next + 1;

  1658                     array = false;

  1659                     continue;

  1660                 case '[':

  1661                     array = true;

  1662                     continue;

  1663                 default:

  1664                     throw new IllegalStateException("Invalid char: " + ch);

  1665             }

  1666         }

  1667     }

  1669     static String mangleSig(String sig) {

  1670         return mangleSig(sig, 0, sig.length());

  1671     }

  1673     private static String mangleMethodName(String name) {

  1674         StringBuilder sb = new StringBuilder(name.length() * 2);

  1675         int last = name.length();

  1676         for (int i = 0; i < last; i++) {

  1677             final char ch = name.charAt(i);

  1678             switch (ch) {

  1679                 case '_': sb.append("_1"); break;

  1680                 default: sb.append(ch); break;

  1681             }

  1682         }

  1683         return sb.toString();

  1684     }

  1685     private static String mangleSig(String txt, int first, int last) {

  1686         StringBuilder sb = new StringBuilder((last - first) * 2);

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

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

  1689             switch (ch) {

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

  1691                 case '_': sb.append("_1"); break;

  1692                 case ';': sb.append("_2"); break;

  1693                 case '[': sb.append("_3"); break;

  1694                 default:

  1695                     if (Character.isJavaIdentifierPart(ch)) {

  1696                         sb.append(ch);

  1697                     } else {

  1698                         sb.append("_0");

  1699                         String hex = Integer.toHexString(ch).toLowerCase();

  1700                         for (int m = hex.length(); m < 4; m++) {

  1701                             sb.append("0");

  1702                         }

  1703                         sb.append(hex);

  1704                     }

  1705                 break;

  1706             }

  1707         }

  1708         return sb.toString();

  1709     }

  1711     private static String mangleClassName(String name) {

  1712         return mangleSig(name);

  1713     }

  1715     private static String findMethodName(MethodData m, StringBuilder cnt) {

  1716         StringBuilder name = new StringBuilder();

  1717         if ("<init>".equals(m.getName())) { // NOI18N

  1718             name.append("cons"); // NOI18N

  1719         } else if ("<clinit>".equals(m.getName())) { // NOI18N

  1720             name.append("class"); // NOI18N

  1721         } else {

  1722             name.append(mangleMethodName(m.getName()));

  1723         }

  1725         countArgs(m.getInternalSig(), new char[1], name, cnt);

  1726         return name.toString();

  1727     }

  1729     static String findMethodName(String[] mi, StringBuilder cnt, char[] returnType) {

  1730         StringBuilder name = new StringBuilder();

  1731         String descr = mi[2];//mi.getDescriptor();

  1732         String nm= mi[1];

  1733         if ("<init>".equals(nm)) { // NOI18N

  1734             name.append("cons"); // NOI18N

  1735         } else {

  1736             name.append(mangleMethodName(nm));

  1737         }

  1738         countArgs(descr, returnType, name, cnt);

  1739         return name.toString();

  1740     }

  1742     private int invokeStaticMethod(byte[] byteCodes, int i, final StackMapper mapper, boolean isStatic)

  1743     throws IOException {

  1744         int methodIndex = readUShortArg(byteCodes, i);

  1745         String[] mi = jc.getFieldInfoName(methodIndex);

  1746         char[] returnType = { 'V' };

  1747         StringBuilder cnt = new StringBuilder();

  1748         String mn = findMethodName(mi, cnt, returnType);

  1750         final int numArguments = isStatic ? cnt.length() : cnt.length() + 1;

  1751         final CharSequence[] vars = new CharSequence[numArguments];

  1753         for (int j = numArguments - 1; j >= 0; --j) {

  1754             vars[j] = mapper.popValue();

  1755         }

  1757         if ((

  1758             "newUpdater__Ljava_util_concurrent_atomic_AtomicIntegerFieldUpdater_2Ljava_lang_Class_2Ljava_lang_String_2".equals(mn)

  1759             && "java/util/concurrent/atomic/AtomicIntegerFieldUpdater".equals(mi[0])

  1760         ) || (

  1761             "newUpdater__Ljava_util_concurrent_atomic_AtomicLongFieldUpdater_2Ljava_lang_Class_2Ljava_lang_String_2".equals(mn)

  1762             && "java/util/concurrent/atomic/AtomicLongFieldUpdater".equals(mi[0])

  1763         )) {

  1764             if (vars[1] instanceof String) {

  1765                 String field = vars[1].toString();

  1766                 if (field.length() > 2 && field.charAt(0) == '"' && field.charAt(field.length() - 1) == '"') {

  1767                     vars[1] = "c._" + field.substring(1, field.length() - 1);

  1768                 }

  1769             }

  1770         }

  1771         if (

  1772             "newUpdater__Ljava_util_concurrent_atomic_AtomicReferenceFieldUpdater_2Ljava_lang_Class_2Ljava_lang_Class_2Ljava_lang_String_2".equals(mn)

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

  1774         ) {

  1775             if (vars[1] instanceof String) {

  1776                 String field = vars[2].toString();

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

  1778                     vars[2] = "c._" + field.substring(1, field.length() - 1);

  1779                 }

  1780             }

  1781         }

  1783         if (returnType[0] != 'V') {

  1784             mapper.flush(this);

  1785             append("var ")

  1786                .append(mapper.pushT(VarType.fromFieldType(returnType[0])))

  1787                .append(" = ");

  1788         }

  1790         final String in = mi[0];

  1791         String mcn;

  1792         if (callbacks && (

  1793             in.equals("org/apidesign/html/boot/spi/Fn") ||

  1794             in.equals("org/netbeans/html/boot/spi/Fn")

  1795         )) {

  1796             mcn = "java_lang_Class";

  1797         } else {

  1798             mcn = mangleClassName(in);

  1799         }

  1800         String object = accessClassFalse(mcn);

  1801         if (mn.startsWith("cons_")) {

  1802             object += ".constructor";

  1803         }

  1804         append(accessStaticMethod(object, mn, mi));

  1805         if (isStatic) {

  1806             append('(');

  1807         } else {

  1808             append(".call(");

  1809         }

  1810         if (numArguments > 0) {

  1811             append(vars[0]);

  1812             for (int j = 1; j < numArguments; ++j) {

  1813                 append(", ");

  1814                 append(vars[j]);

  1815             }

  1816         }

  1817         append(");");

  1818         i += 2;

  1819         addReference(in);

  1820         return i;

  1821     }

  1822     private int invokeVirtualMethod(byte[] byteCodes, int i, final StackMapper mapper)

  1823     throws IOException {

  1824         int methodIndex = readUShortArg(byteCodes, i);

  1825         String[] mi = jc.getFieldInfoName(methodIndex);

  1826         char[] returnType = { 'V' };

  1827         StringBuilder cnt = new StringBuilder();

  1828         String mn = findMethodName(mi, cnt, returnType);

  1830         final int numArguments = cnt.length() + 1;

  1831         final CharSequence[] vars =  new CharSequence[numArguments];

  1833         for (int j = numArguments - 1; j >= 0; --j) {

  1834             vars[j] = mapper.popValue();

  1835         }

  1837         if (returnType[0] != 'V') {

  1838             mapper.flush(this);

  1839             append("var ")

  1840                .append(mapper.pushT(VarType.fromFieldType(returnType[0])))

  1841                .append(" = ");

  1842         }

  1844         append(accessVirtualMethod(vars[0].toString(), mn, mi, numArguments));

  1845         String sep = "";

  1846         for (int j = 1; j < numArguments; ++j) {

  1847             append(sep);

  1848             append(vars[j]);

  1849             sep = ", ";

  1850         }

  1851         append(");");

  1852         i += 2;

  1853         return i;

  1854     }

  1856     private void addReference(String cn) throws IOException {

  1857         if (requireReference(cn)) {

  1858             debug(" /* needs " + cn + " */");

  1859         }

  1860     }

  1862     private void outType(String d, StringBuilder out) {

  1863         int arr = 0;

  1864         while (d.charAt(0) == '[') {

  1865             out.append('A');

  1866             d = d.substring(1);

  1867         }

  1868         if (d.charAt(0) == 'L') {

  1869             assert d.charAt(d.length() - 1) == ';';

  1870             out.append(d.replace('/', '_').substring(0, d.length() - 1));

  1871         } else {

  1872             out.append(d);

  1873         }

  1874     }

  1876     private String encodeConstant(int entryIndex) throws IOException {

  1877         String[] classRef = { null };

  1878         String s = jc.stringValue(entryIndex, classRef);

  1879         if (classRef[0] != null) {

  1880             if (classRef[0].startsWith("[")) {

  1881                 s = accessClass("java_lang_Class") + "(false)['forName__Ljava_lang_Class_2Ljava_lang_String_2']('" + classRef[0] + "')";

  1882             } else {

  1883                 addReference(classRef[0]);

  1884                 s = accessClassFalse(mangleClassName(s)) + ".constructor.$class";

  1885             }

  1886         }

  1887         return s;

  1888     }

  1890     private String javaScriptBody(String destObject, MethodData m, boolean isStatic) throws IOException {

  1891         byte[] arr = m.findAnnotationData(true);

  1892         if (arr == null) {

  1893             return null;

  1894         }

  1895         final String jvmType = "Lorg/apidesign/bck2brwsr/core/JavaScriptBody;";

  1896         final String htmlType = "Lnet/java/html/js/JavaScriptBody;";

  1897         class P extends AnnotationParser {

  1898             public P() {

  1899                 super(false, true);

  1900             }

  1902             int cnt;

  1903             String[] args = new String[30];

  1904             String body;

  1905             boolean javacall;

  1906             boolean html4j;

  1908             @Override

  1909             protected void visitAttr(String type, String attr, String at, String value) {

  1910                 if (type.equals(jvmType)) {

  1911                     if ("body".equals(attr)) {

  1912                         body = value;

  1913                     } else if ("args".equals(attr)) {

  1914                         args[cnt++] = value;

  1915                     } else {

  1916                         throw new IllegalArgumentException(attr);

  1917                     }

  1918                 }

  1919                 if (type.equals(htmlType)) {

  1920                     html4j = true;

  1921                     if ("body".equals(attr)) {

  1922                         body = value;

  1923                     } else if ("args".equals(attr)) {

  1924                         args[cnt++] = value;

  1925                     } else if ("javacall".equals(attr)) {

  1926                         javacall = "1".equals(value);

  1927                     } else if ("wait4js".equals(attr)) {

  1928                         // ignore, we always invoke synchronously

  1929                     } else {

  1930                         throw new IllegalArgumentException(attr);

  1931                     }

  1932                 }

  1933             }

  1934         }

  1935         P p = new P();

  1936         p.parse(arr, jc);

  1937         if (p.body == null) {

  1938             return null;

  1939         }

  1940         StringBuilder cnt = new StringBuilder();

  1941         final String mn = findMethodName(m, cnt);

  1942         append("m = ").append(destObject).append(".").append(mn);

  1943         append(" = function(");

  1944         String space = "";

  1945         int index = 0;

  1946         StringBuilder toValue = new StringBuilder();

  1947         for (int i = 0; i < cnt.length(); i++) {

  1948             append(space);

  1949             space = outputArg(this, p.args, index);

  1950             if (p.html4j && space.length() > 0) {

  1951                 toValue.append("\n  ").append(p.args[index]).append(" = ")

  1952                     .append(accessClass("java_lang_Class")).append("(false).toJS(").

  1953                     append(p.args[index]).append(");");

  1954             }

  1955             index++;

  1956         }

  1957         append(") {").append("\n");

  1958         append(toValue.toString());

  1959         if (p.javacall) {

  1960             int lastSlash = jc.getClassName().lastIndexOf('/');

  1961             final String pkg = jc.getClassName().substring(0, lastSlash);

  1962             append(mangleCallbacks(pkg, p.body));

  1963             requireReference(pkg + "/$JsCallbacks$");

  1964         } else {

  1965             append(p.body);

  1966         }

  1967         append("\n}\n");

  1968         return mn;

  1969     }

  1971     private static CharSequence mangleCallbacks(String pkgName, String body) {

  1972         StringBuilder sb = new StringBuilder();

  1973         int pos = 0;

  1974         for (;;) {

  1975             int next = body.indexOf(".@", pos);

  1976             if (next == -1) {

  1977                 sb.append(body.substring(pos));

  1978                 body = sb.toString();

  1979                 break;

  1980             }

  1981             int ident = next;

  1982             while (ident > 0) {

  1983                 if (!Character.isJavaIdentifierPart(body.charAt(--ident))) {

  1984                     ident++;

  1985                     break;

  1986                 }

  1987             }

  1988             String refId = body.substring(ident, next);

  1990             sb.append(body.substring(pos, ident));

  1992             int sigBeg = body.indexOf('(', next);

  1993             int sigEnd = body.indexOf(')', sigBeg);

  1994             int colon4 = body.indexOf("::", next);

  1995             if (sigBeg == -1 || sigEnd == -1 || colon4 == -1) {

  1996                 throw new IllegalStateException("Malformed body " + body);

  1997             }

  1998             String fqn = body.substring(next + 2, colon4);

  1999             String method = body.substring(colon4 + 2, sigBeg);

  2000             String params = body.substring(sigBeg, sigEnd + 1);

  2002             int paramBeg = body.indexOf('(', sigEnd + 1);

  2004             sb.append("vm.").append(pkgName.replace('/', '_')).append("_$JsCallbacks$(false)._VM().");

  2005             sb.append(mangleJsCallbacks(fqn, method, params, false));

  2006             sb.append("(").append(refId);

  2007             if (body.charAt(paramBeg + 1) != ')') {

  2008                 sb.append(",");

  2009             }

  2010             pos = paramBeg + 1;

  2011         }

  2012         sb = null;

  2013         pos = 0;

  2014         for (;;) {

  2015             int next = body.indexOf("@", pos);

  2016             if (next == -1) {

  2017                 if (sb == null) {

  2018                     return body;

  2019                 }

  2020                 sb.append(body.substring(pos));

  2021                 return sb;

  2022             }

  2023             if (sb == null) {

  2024                 sb = new StringBuilder();

  2025             }

  2027             sb.append(body.substring(pos, next));

  2029             int sigBeg = body.indexOf('(', next);

  2030             int sigEnd = body.indexOf(')', sigBeg);

  2031             int colon4 = body.indexOf("::", next);

  2032             if (sigBeg == -1 || sigEnd == -1 || colon4 == -1) {

  2033                 throw new IllegalStateException("Malformed body " + body);

  2034             }

  2035             String fqn = body.substring(next + 1, colon4);

  2036             String method = body.substring(colon4 + 2, sigBeg);

  2037             String params = body.substring(sigBeg, sigEnd + 1);

  2039             int paramBeg = body.indexOf('(', sigEnd + 1);

  2041             sb.append("vm.").append(pkgName.replace('/', '_')).append("_$JsCallbacks$(false)._VM().");

  2042             sb.append(mangleJsCallbacks(fqn, method, params, true));

  2043             sb.append("(");

  2044             pos = paramBeg + 1;

  2045         }

  2046     }

  2048     static String mangleJsCallbacks(String fqn, String method, String params, boolean isStatic) {

  2049         if (params.startsWith("(")) {

  2050             params = params.substring(1);

  2051         }

  2052         if (params.endsWith(")")) {

  2053             params = params.substring(0, params.length() - 1);

  2054         }

  2055         StringBuilder sb = new StringBuilder();

  2056         final String fqnu = fqn.replace('.', '_');

  2057         final String rfqn = mangleClassName(fqnu);

  2058         final String rm = mangleMethodName(method);

  2059         final String srp;

  2060         {

  2061             StringBuilder pb = new StringBuilder();

  2062             int len = params.length();

  2063             int indx = 0;

  2064             while (indx < len) {

  2065                 char ch = params.charAt(indx);

  2066                 if (ch == '[' || ch == 'L') {

  2067                     int column = params.indexOf(';', indx) + 1;

  2068                     if (column > indx) {

  2069                         String real = params.substring(indx, column);

  2070                         if ("Ljava/lang/String;".equals(real)) {

  2071                             pb.append("Ljava/lang/String;");

  2072                             indx = column;

  2073                             continue;

  2074                         }

  2075                     }

  2076                     pb.append("Ljava/lang/Object;");

  2077                     indx = column;

  2078                 } else {

  2079                     pb.append(ch);

  2080                     indx++;

  2081                 }

  2082             }

  2083             srp = mangleSig(pb.toString());

  2084         }

  2085         final String rp = mangleSig(params);

  2086         final String mrp = mangleMethodName(rp);

  2087         sb.append(rfqn).append("$").append(rm).

  2088             append('$').append(mrp).append("__Ljava_lang_Object_2");

  2089         if (!isStatic) {

  2090             sb.append('L').append(fqnu).append("_2");

  2091         }

  2092         sb.append(srp);

  2093         return sb.toString();

  2094     }

  2096     private static String className(ClassData jc) {

  2097         //return jc.getName().getInternalName().replace('/', '_');

  2098         return mangleClassName(jc.getClassName());

  2099     }

  2101     private static String[] findAnnotation(

  2102         byte[] arr, ClassData cd, final String className,

  2103         final String... attrNames

  2104     ) throws IOException {

  2105         if (arr == null) {

  2106             return null;

  2107         }

  2108         final String[] values = new String[attrNames.length];

  2109         final boolean[] found = { false };

  2110         final String jvmType = "L" + className.replace('.', '/') + ";";

  2111         AnnotationParser ap = new AnnotationParser(false, true) {

  2112             @Override

  2113             protected void visitAttr(String type, String attr, String at, String value) {

  2114                 if (type.equals(jvmType)) {

  2115                     found[0] = true;

  2116                     for (int i = 0; i < attrNames.length; i++) {

  2117                         if (attrNames[i].equals(attr)) {

  2118                             values[i] = value;

  2119                         }

  2120                     }

  2121                 }

  2122             }

  2124         };

  2125         ap.parse(arr, cd);

  2126         return found[0] ? values : null;

  2127     }

  2129     private CharSequence initField(FieldData v) {

  2130         final String is = v.getInternalSig();

  2131         if (is.length() == 1) {

  2132             switch (is.charAt(0)) {

  2133                 case 'S':

  2134                 case 'J':

  2135                 case 'B':

  2136                 case 'Z':

  2137                 case 'C':

  2138                 case 'I': return " = 0;";

  2139                 case 'F':

  2140                 case 'D': return " = 0.0;";

  2141                 default:

  2142                     throw new IllegalStateException(is);

  2143             }

  2144         }

  2145         return " = null;";

  2146     }

  2148     private void generateAnno(ClassData cd, byte[] data) throws IOException {

  2149         AnnotationParser ap = new AnnotationParser(true, false) {

  2150             int[] cnt = new int[32];

  2151             int depth;

  2153             @Override

  2154             protected void visitAnnotationStart(String attrType, boolean top) throws IOException {

  2155                 final String slashType = attrType.substring(1, attrType.length() - 1);

  2156                 requireReference(slashType);

  2158                 if (cnt[depth]++ > 0) {

  2159                     append(",");

  2160                 }

  2161                 if (top) {

  2162                     append('"').append(attrType).append("\" : ");

  2163                 }

  2164                 append("{\n");

  2165                 cnt[++depth] = 0;

  2166             }

  2168             @Override

  2169             protected void visitAnnotationEnd(String type, boolean top) throws IOException {

  2170                 append("\n}\n");

  2171                 depth--;

  2172             }

  2174             @Override

  2175             protected void visitValueStart(String attrName, char type) throws IOException {

  2176                 if (cnt[depth]++ > 0) {

  2177                     append(",\n");

  2178                 }

  2179                 cnt[++depth] = 0;

  2180                 if (attrName != null) {

  2181                     append('"').append(attrName).append("\" : ");

  2182                 }

  2183                 if (type == '[') {

  2184                     append("[");

  2185                 }

  2186             }

  2188             @Override

  2189             protected void visitValueEnd(String attrName, char type) throws IOException {

  2190                 if (type == '[') {

  2191                     append("]");

  2192                 }

  2193                 depth--;

  2194             }

  2196             @Override

  2197             protected void visitAttr(String type, String attr, String attrType, String value)

  2198             throws IOException {

  2199                 if (attr == null && value == null) {

  2200                     return;

  2201                 }

  2202                 append(value);

  2203             }

  2205             @Override

  2206             protected void visitEnumAttr(String type, String attr, String attrType, String value)

  2207             throws IOException {

  2208                 final String slashType = attrType.substring(1, attrType.length() - 1);

  2209                 requireReference(slashType);

  2211                 final String cn = mangleClassName(slashType);

  2212                 append(accessClassFalse(cn))

  2213                    .append("['valueOf__L").

  2214                     append(cn).

  2215                     append("_2Ljava_lang_String_2']('").

  2216                     append(value).

  2217                     append("')");

  2218             }

  2219         };

  2220         ap.parse(data, cd);

  2221     }

  2223     private static String outputArg(Appendable out, String[] args, int indx) throws IOException {

  2224         final String name = args[indx];

  2225         if (name == null) {

  2226             return "";

  2227         }

  2228         if (name.contains(",")) {

  2229             throw new IOException("Wrong parameter with ',': " + name);

  2230         }

  2231         out.append(name);

  2232         return ",";

  2233     }

  2235     final void emitNoFlush(

  2236         StackMapper sm,

  2237         final String format, final CharSequence... params

  2238     ) throws IOException {

  2239         emitImpl(this, format, params);

  2240     }

  2241     static final void emit(

  2242         StackMapper sm,

  2243         final Appendable out,

  2244         final String format, final CharSequence... params

  2245     ) throws IOException {

  2246         sm.flush(out);

  2247         emitImpl(out, format, params);

  2248     }

  2249     static void emitImpl(final Appendable out,

  2250                              final String format,

  2251                              final CharSequence... params) throws IOException {

  2252         final int length = format.length();

  2254         int processed = 0;

  2255         int paramOffset = format.indexOf('@');

  2256         while ((paramOffset != -1) && (paramOffset < (length - 1))) {

  2257             final char paramChar = format.charAt(paramOffset + 1);

  2258             if ((paramChar >= '1') && (paramChar <= '9')) {

  2259                 final int paramIndex = paramChar - '0' - 1;

  2261                 out.append(format, processed, paramOffset);

  2262                 out.append(params[paramIndex]);

  2264                 ++paramOffset;

  2265                 processed = paramOffset + 1;

  2266             }

  2268             paramOffset = format.indexOf('@', paramOffset + 1);

  2269         }

  2271         out.append(format, processed, length);

  2272     }

  2274     private void generateCatch(TrapData[] traps, Flow flow, int current, int topMostLabel) throws IOException {

  2275         append("} catch (e) {\n");

  2276         int finallyPC = -1;

  2277         for (TrapData e : traps) {

  2278             if (e == null) {

  2279                 break;

  2280             }

  2281             if (e.catch_cpx != 0) { //not finally

  2282                 final String classInternalName = jc.getClassName(e.catch_cpx);

  2283                 addReference(classInternalName);

  2284                 append("e = vm.java_lang_Class(false).bck2BrwsrThrwrbl(e);");

  2285                 append("if (e['$instOf_" + classInternalName.replace('/', '_') + "']) {");

  2286                 append("var stA0 = e;");

  2287                 goTo(this, flow, current, e.handler_pc, topMostLabel);

  2288                 append("}\n");

  2289             } else {

  2290                 finallyPC = e.handler_pc;

  2291             }

  2292         }

  2293         if (finallyPC == -1) {

  2294             append("throw e;");

  2295         } else {

  2296             append("var stA0 = e;");

  2297             goTo(this, flow, current, finallyPC, topMostLabel);

  2298         }

  2299         append("\n}");

  2300     }

  2302     private static void goTo(Appendable out, Flow flow, int current, int to, int canBack) throws IOException {

  2303         if (to < current) {

  2304             if (canBack < to) {

  2305                 out.append("{ gt = 0; continue X_" + to + "; }");

  2306             } else {

  2307                 out.append("{ gt = " + to + "; continue X_0; }");

  2308             }

  2309         } else {

  2310             out.append("{ gt = " + to + "; break IF; }");

  2311         }

  2312     }

  2314     private static void emitIf(

  2315         StackMapper sm, Flow flow, Appendable out, String pattern, CharSequence param, int current, int to, int canBack

  2316     ) throws IOException {

  2317         sm.flush(out);

  2318         emitImpl(out, pattern, param);

  2319         goTo(out, flow, current, to, canBack);

  2320     }

  2322     private void generateNewArray(int atype, final StackMapper smapper) throws IOException, IllegalStateException {

  2323         String jvmType;

  2324         switch (atype) {

  2325             case 4: jvmType = "[Z"; break;

  2326             case 5: jvmType = "[C"; break;

  2327             case 6: jvmType = "[F"; break;

  2328             case 7: jvmType = "[D"; break;

  2329             case 8: jvmType = "[B"; break;

  2330             case 9: jvmType = "[S"; break;

  2331             case 10: jvmType = "[I"; break;

  2332             case 11: jvmType = "[J"; break;

  2333             default: throw new IllegalStateException("Array type: " + atype);

  2334         }

  2335         emit(smapper, this,

  2336             "var @2 = Array.prototype['newArray__Ljava_lang_Object_2ZLjava_lang_String_2Ljava_lang_Object_2I'](true, '@3', null, @1);",

  2337              smapper.popI(), smapper.pushA(), jvmType);

  2338     }

  2340     private void generateANewArray(int type, final StackMapper smapper) throws IOException {

  2341         String typeName = jc.getClassName(type);

  2342         String ref = "null";

  2343         if (typeName.startsWith("[")) {

  2344             typeName = "'[" + typeName + "'";

  2345         } else {

  2346             ref = "vm." + mangleClassName(typeName);

  2347             typeName = "'[L" + typeName + ";'";

  2348         }

  2349         emit(smapper, this,

  2350             "var @2 = Array.prototype['newArray__Ljava_lang_Object_2ZLjava_lang_String_2Ljava_lang_Object_2I'](false, @3, @4, @1);",

  2351              smapper.popI(), smapper.pushA(), typeName, ref);

  2352     }

  2354     private int generateMultiANewArray(int type, final byte[] byteCodes, int i, final StackMapper smapper) throws IOException {

  2355         String typeName = jc.getClassName(type);

  2356         int dim = readUByte(byteCodes, ++i);

  2357         StringBuilder dims = new StringBuilder();

  2358         dims.append('[');

  2359         for (int d = 0; d < dim; d++) {

  2360             if (d != 0) {

  2361                 dims.insert(1, ",");

  2362             }

  2363             dims.insert(1, smapper.popI());

  2364         }

  2365         dims.append(']');

  2366         String fn = "null";

  2367         if (typeName.charAt(dim) == 'L') {

  2368             fn = "vm." + mangleClassName(typeName.substring(dim + 1, typeName.length() - 1));

  2369         }

  2370         emit(smapper, this,

  2371             "var @2 = Array.prototype['multiNewArray__Ljava_lang_Object_2Ljava_lang_String_2_3ILjava_lang_Object_2']('@3', @1, @4);",

  2372              dims.toString(), smapper.pushA(), typeName, fn

  2373         );

  2374         return i;

  2375     }

  2377     private int generateTableSwitch(int i, final byte[] byteCodes, final StackMapper smapper, Flow flow, int topMostLabel) throws IOException {

  2378         int table = i / 4 * 4 + 4;

  2379         int dflt = i + readInt4(byteCodes, table);

  2380         table += 4;

  2381         int low = readInt4(byteCodes, table);

  2382         table += 4;

  2383         int high = readInt4(byteCodes, table);

  2384         table += 4;

  2385         final CharSequence swVar = smapper.popValue();

  2386         smapper.flush(this);

  2387         append("switch (").append(swVar).append(") {\n");

  2388         while (low <= high) {

  2389             int offset = i + readInt4(byteCodes, table);

  2390             table += 4;

  2391             append("  case " + low).append(":"); goTo(this, flow, i, offset, topMostLabel); append('\n');

  2392             low++;

  2393         }

  2394         append("  default: ");

  2395         goTo(this, flow, i, dflt, topMostLabel);

  2396         append("\n}");

  2397         i = table - 1;

  2398         return i;

  2399     }

  2401     private int generateLookupSwitch(int i, final byte[] byteCodes, final StackMapper smapper, Flow flow, int topMostLabel) throws IOException {

  2402         int table = i / 4 * 4 + 4;

  2403         int dflt = i + readInt4(byteCodes, table);

  2404         table += 4;

  2405         int n = readInt4(byteCodes, table);

  2406         table += 4;

  2407         final CharSequence swVar = smapper.popValue();

  2408         smapper.flush(this);

  2409         append("switch (").append(swVar).append(") {\n");

  2410         while (n-- > 0) {

  2411             int cnstnt = readInt4(byteCodes, table);

  2412             table += 4;

  2413             int offset = i + readInt4(byteCodes, table);

  2414             table += 4;

  2415             append("  case " + cnstnt).append(": "); goTo(this, flow, i, offset, topMostLabel); append('\n');

  2416         }

  2417         append("  default: ");

  2418         goTo(this, flow, i, dflt, topMostLabel);

  2419         append("\n}");

  2420         i = table - 1;

  2421         return i;

  2422     }

  2424     private void generateInstanceOf(int indx, final StackMapper smapper) throws IOException {

  2425         String type = jc.getClassName(indx);

  2426         if (!type.startsWith("[")) {

  2427             emit(smapper, this,

  2428                     "var @2 = @1 != null && @1['$instOf_@3'] ? 1 : 0;",

  2429                  smapper.popA(), smapper.pushI(),

  2430                  type.replace('/', '_'));

  2431         } else {

  2432             int cnt = 0;

  2433             while (type.charAt(cnt) == '[') {

  2434                 cnt++;

  2435             }

  2436             if (type.charAt(cnt) == 'L') {

  2437                 type = "vm." + mangleClassName(type.substring(cnt + 1, type.length() - 1));

  2438                 emit(smapper, this,

  2439                     "var @2 = Array.prototype['isInstance__ZLjava_lang_Object_2ILjava_lang_Object_2'](@1, @4, @3);",

  2440                     smapper.popA(), smapper.pushI(),

  2441                     type, "" + cnt

  2442                 );

  2443             } else {

  2444                 emit(smapper, this,

  2445                     "var @2 = Array.prototype['isInstance__ZLjava_lang_Object_2Ljava_lang_String_2'](@1, '@3');",

  2446                     smapper.popA(), smapper.pushI(), type

  2447                 );

  2448             }

  2449         }

  2450     }

  2452     private void generateCheckcast(int indx, final StackMapper smapper) throws IOException {

  2453         String type = jc.getClassName(indx);

  2454         if (!type.startsWith("[")) {

  2455             emitNoFlush(smapper,

  2456                  "if (@1 !== null && !@1['$instOf_@2']) vm.java_lang_Class(false).castEx();",

  2457                  smapper.getT(0, VarType.REFERENCE, false), type.replace('/', '_'));

  2458         } else {

  2459             int cnt = 0;

  2460             while (type.charAt(cnt) == '[') {

  2461                 cnt++;

  2462             }

  2463             if (type.charAt(cnt) == 'L') {

  2464                 type = "vm." + mangleClassName(type.substring(cnt + 1, type.length() - 1));

  2465                 emitNoFlush(smapper,

  2466                     "if (@1 !== null && !Array.prototype['isInstance__ZLjava_lang_Object_2ILjava_lang_Object_2'](@1, @3, @2)) vm.java_lang_Class(false).castEx();",

  2467                      smapper.getT(0, VarType.REFERENCE, false), type, "" + cnt

  2468                 );

  2469             } else {

  2470                 emitNoFlush(smapper,

  2471                     "if (@1 !== null && !Array.prototype['isInstance__ZLjava_lang_Object_2Ljava_lang_String_2'](@1, '@2')) vm.java_lang_Class(false).castEx();",

  2472                      smapper.getT(0, VarType.REFERENCE, false), type

  2473                 );

  2474             }

  2475         }

  2476     }

  2478     private void generateByteCodeComment(int prev, int i, final byte[] byteCodes) throws IOException {

  2479         for (int j = prev; j <= i; j++) {

  2480             append(" ");

  2481             final int cc = readUByte(byteCodes, j);

  2482             append(Integer.toString(cc));

  2483         }

  2484     }

  2486     @JavaScriptBody(args = "msg", body = "")

  2487     private static void println(String msg) {

  2488         System.err.println(msg);

  2489     }

  2491     protected Flow checkFlow(MethodData byteCodes) throws IOException {

  2492         return null;

  2493     }

  2494 }

author	Jaroslav Tulach <jaroslav.tulach@apidesign.org>
	Fri, 11 Sep 2015 14:51:09 +0200
branch	flow
changeset 1842	dd4dabfead82
parent 1816	6c1fa412c72d
permissions	-rw-r--r--