diff -r 4252bfc396fc -r d382dacfd73f rt/vm/src/main/java/org/apidesign/vm4brwsr/ByteCodeToJavaScript.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/rt/vm/src/main/java/org/apidesign/vm4brwsr/ByteCodeToJavaScript.java	Tue Feb 26 16:54:16 2013 +0100
@@ -0,0 +1,1859 @@
+/**
+ * Back 2 Browser Bytecode Translator
+ * Copyright (C) 2012 Jaroslav Tulach <jaroslav.tulach@apidesign.org>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. Look for COPYING file in the top folder.
+ * If not, see http://opensource.org/licenses/GPL-2.0.
+ */
+package org.apidesign.vm4brwsr;
+
+import java.io.IOException;
+import java.io.InputStream;
+import org.apidesign.bck2brwsr.core.JavaScriptBody;
+import org.apidesign.javap.AnnotationParser;
+import org.apidesign.javap.ClassData;
+import org.apidesign.javap.FieldData;
+import org.apidesign.javap.MethodData;
+import org.apidesign.javap.StackMapIterator;
+import static org.apidesign.javap.RuntimeConstants.*;
+import org.apidesign.javap.TrapData;
+import org.apidesign.javap.TrapDataIterator;
+
+/** Translator of the code inside class files to JavaScript.
+ *
+ * @author Jaroslav Tulach <jtulach@netbeans.org>
+ */
+abstract class ByteCodeToJavaScript {
+    private ClassData jc;
+    final Appendable out;
+
+    protected ByteCodeToJavaScript(Appendable out) {
+        this.out = out;
+    }
+    
+    /* Collects additional required resources.
+     * 
+     * @param internalClassName classes that were referenced and should be loaded in order the
+     *   generated JavaScript code works properly. The names are in internal 
+     *   JVM form so String is <code>java/lang/String</code>. 
+     */
+    protected abstract boolean requireReference(String internalClassName);
+    
+    /*
+     * @param resourcePath name of resources to read
+     */
+    protected abstract void requireScript(String resourcePath) throws IOException;
+    
+    /** Allows subclasses to redefine what field a function representing a
+     * class gets assigned. By default it returns the suggested name followed
+     * by <code>" = "</code>;
+     * 
+     * @param className suggested name of the class
+     */
+    /* protected */ String assignClass(String className) {
+        return className + " = ";
+    }
+    /* protected */ String accessClass(String classOperation) {
+        return classOperation;
+    }
+    
+    /** Prints out a debug message. 
+     * 
+     * @param msg the message
+     * @return true if the message has been printed
+     * @throws IOException 
+     */
+    boolean debug(String msg) throws IOException {
+        out.append(msg);
+        return true;
+    }
+
+    /**
+     * Converts a given class file to a JavaScript version.
+     *
+     * @param classFile input stream with code of the .class file
+     * @return the initialization code for this class, if any. Otherwise <code>null</code>
+     * 
+     * @throws IOException if something goes wrong during read or write or translating
+     */
+    
+    public String compile(InputStream classFile) throws IOException {
+        this.jc = new ClassData(classFile);
+        if (jc.getMajor_version() < 50) {
+            throw new IOException("Can't compile " + jc.getClassName() + ". Class file version " + jc.getMajor_version() + "."
+                + jc.getMinor_version() + " - recompile with -target 1.6 (at least)."
+            );
+        }
+        byte[] arrData = jc.findAnnotationData(true);
+        String[] arr = findAnnotation(arrData, jc, 
+            "org.apidesign.bck2brwsr.core.ExtraJavaScript", 
+            "resource", "processByteCode"
+        );
+        if (arr != null) {
+            requireScript(arr[0]);
+            if ("0".equals(arr[1])) {
+                return null;
+            }
+        }
+        String[] proto = findAnnotation(arrData, jc, 
+            "org.apidesign.bck2brwsr.core.JavaScriptPrototype", 
+            "container", "prototype"
+        );
+        StringArray toInitilize = new StringArray();
+        final String className = className(jc);
+        out.append("\n\n").append(assignClass(className));
+        out.append("function CLS() {");
+        out.append("\n  if (!CLS.$class) {");
+        if (proto == null) {
+            String sc = jc.getSuperClassName(); // with _
+            out.append("\n    var pp = ").
+                append(accessClass(sc.replace('/', '_'))).append("(true);");
+            out.append("\n    var p = CLS.prototype = pp;");
+            out.append("\n    var c = p;");
+            out.append("\n    var sprcls = pp.constructor.$class;");
+        } else {
+            out.append("\n    var p = CLS.prototype = ").append(proto[1]).append(";");
+            if (proto[0] == null) {
+                proto[0] = "p";
+            }
+            out.append("\n    var c = ").append(proto[0]).append(";");
+            out.append("\n    var sprcls = null;");
+        }
+        for (FieldData v : jc.getFields()) {
+            if (v.isStatic()) {
+                out.append("\n  CLS.").append(v.getName()).append(initField(v));
+            } else {
+                out.append("\n  c._").append(v.getName()).append(" = function (v) {")
+                   .append("  if (arguments.length == 1) this.fld_").
+                    append(className).append('_').append(v.getName())
+                   .append(" = v; return this.fld_").
+                    append(className).append('_').append(v.getName())
+                   .append("; };");
+            }
+        }
+        for (MethodData m : jc.getMethods()) {
+            byte[] onlyArr = m.findAnnotationData(true);
+            String[] only = findAnnotation(onlyArr, jc, 
+                "org.apidesign.bck2brwsr.core.JavaScriptOnly", 
+                "name", "value"
+            );
+            if (only != null) {
+                if (only[0] != null && only[1] != null) {
+                    out.append("\n    p.").append(only[0]).append(" = ")
+                        .append(only[1]).append(";");
+                }
+                continue;
+            }
+            String prefix;
+            String mn;
+            if (m.isStatic()) {
+                prefix = "\n    c.";
+                mn = generateStaticMethod(prefix, m, toInitilize);
+            } else {
+                if (m.isConstructor()) {
+                    prefix = "\n    CLS.";
+                    mn = generateInstanceMethod(prefix, m);
+                } else {
+                    prefix = "\n    c.";
+                    mn = generateInstanceMethod(prefix, m);
+                }
+            }
+            byte[] runAnno = m.findAnnotationData(false);
+            if (runAnno != null) {
+                out.append(prefix).append(mn).append(".anno = {");
+                generateAnno(jc, out, runAnno);
+                out.append("\n    };");
+            }
+            out.append(prefix).append(mn).append(".access = " + m.getAccess()).append(";");
+            out.append(prefix).append(mn).append(".cls = CLS;");
+        }
+        out.append("\n    c.constructor = CLS;");
+        out.append("\n    c.$instOf_").append(className).append(" = true;");
+        for (String superInterface : jc.getSuperInterfaces()) {
+            out.append("\n    c.$instOf_").append(superInterface.replace('/', '_')).append(" = true;");
+        }
+        out.append("\n    CLS.$class = 'temp';");
+        out.append("\n    CLS.$class = ");
+        out.append(accessClass("java_lang_Class(true);"));
+        out.append("\n    CLS.$class.jvmName = '").append(jc.getClassName()).append("';");
+        out.append("\n    CLS.$class.superclass = sprcls;");
+        out.append("\n    CLS.$class.access = ").append(jc.getAccessFlags()+";");
+        out.append("\n    CLS.$class.cnstr = CLS;");
+        byte[] classAnno = jc.findAnnotationData(false);
+        if (classAnno != null) {
+            out.append("\n    CLS.$class.anno = {");
+            generateAnno(jc, out, classAnno);
+            out.append("\n    };");
+        }
+        out.append("\n  }");
+        out.append("\n  if (arguments.length === 0) {");
+        out.append("\n    if (!(this instanceof CLS)) {");
+        out.append("\n      return new CLS();");
+        out.append("\n    }");
+        for (FieldData v : jc.getFields()) {
+            byte[] onlyArr = v.findAnnotationData(true);
+            String[] only = findAnnotation(onlyArr, jc, 
+                "org.apidesign.bck2brwsr.core.JavaScriptOnly", 
+                "name", "value"
+            );
+            if (only != null) {
+                if (only[0] != null && only[1] != null) {
+                    out.append("\n    p.").append(only[0]).append(" = ")
+                        .append(only[1]).append(";");
+                }
+                continue;
+            }
+            if (!v.isStatic()) {
+                out.append("\n    this.fld_").
+                    append(className).append('_').
+                    append(v.getName()).append(initField(v));
+            }
+        }
+        out.append("\n    return this;");
+        out.append("\n  }");
+        out.append("\n  return arguments[0] ? new CLS() : CLS.prototype;");
+        out.append("\n};");
+        StringBuilder sb = new StringBuilder();
+        for (String init : toInitilize.toArray()) {
+            sb.append("\n").append(init).append("();");
+        }
+        return sb.toString();
+    }
+    private String generateStaticMethod(String prefix, MethodData m, StringArray toInitilize) throws IOException {
+        String jsb = javaScriptBody(prefix, m, true);
+        if (jsb != null) {
+            return jsb;
+        }
+        final String mn = findMethodName(m, new StringBuilder());
+        if (mn.equals("class__V")) {
+            toInitilize.add(accessClass(className(jc)) + "(false)." + mn);
+        }
+        generateMethod(prefix, mn, m);
+        return mn;
+    }
+
+    private String generateInstanceMethod(String prefix, MethodData m) throws IOException {
+        String jsb = javaScriptBody(prefix, m, false);
+        if (jsb != null) {
+            return jsb;
+        }
+        final String mn = findMethodName(m, new StringBuilder());
+        generateMethod(prefix, mn, m);
+        return mn;
+    }
+
+    private void generateMethod(String prefix, String name, MethodData m)
+            throws IOException {
+        final StackMapIterator stackMapIterator = m.createStackMapIterator();
+        TrapDataIterator trap = m.getTrapDataIterator();
+        final LocalsMapper lmapper =
+                new LocalsMapper(stackMapIterator.getArguments());
+
+        out.append(prefix).append(name).append(" = function(");
+        lmapper.outputArguments(out, m.isStatic());
+        out.append(") {").append("\n");
+
+        final byte[] byteCodes = m.getCode();
+        if (byteCodes == null) {
+            out.append("  throw 'no code found for ")
+               .append(jc.getClassName()).append('.')
+               .append(m.getName()).append("';\n");
+            out.append("};");
+            return;
+        }
+
+        final StackMapper smapper = new StackMapper();
+
+        if (!m.isStatic()) {
+            out.append("  var ").append(" lcA0 = this;\n");
+        }
+
+        int lastStackFrame = -1;
+        TrapData[] previousTrap = null;
+        boolean wide = false;
+        
+        out.append("\n  var gt = 0;\n  for(;;) switch(gt) {\n");
+        for (int i = 0; i < byteCodes.length; i++) {
+            int prev = i;
+            stackMapIterator.advanceTo(i);
+            boolean changeInCatch = trap.advanceTo(i);
+            if (changeInCatch || lastStackFrame != stackMapIterator.getFrameIndex()) {
+                if (previousTrap != null) {
+                    generateCatch(previousTrap);
+                    previousTrap = null;
+                }
+            }
+            if (lastStackFrame != stackMapIterator.getFrameIndex()) {
+                lastStackFrame = stackMapIterator.getFrameIndex();
+                lmapper.syncWithFrameLocals(stackMapIterator.getFrameLocals());
+                smapper.syncWithFrameStack(stackMapIterator.getFrameStack());
+                out.append("    case " + i).append(": ");            
+                changeInCatch = true;
+            } else {
+                debug("    /* " + i + " */ ");
+            }
+            if (changeInCatch && trap.useTry()) {
+                out.append("try {");
+                previousTrap = trap.current();
+            }
+            final int c = readUByte(byteCodes, i);
+            switch (c) {
+                case opc_aload_0:
+                    emit(out, "var @1 = @2;", smapper.pushA(), lmapper.getA(0));
+                    break;
+                case opc_iload_0:
+                    emit(out, "var @1 = @2;", smapper.pushI(), lmapper.getI(0));
+                    break;
+                case opc_lload_0:
+                    emit(out, "var @1 = @2;", smapper.pushL(), lmapper.getL(0));
+                    break;
+                case opc_fload_0:
+                    emit(out, "var @1 = @2;", smapper.pushF(), lmapper.getF(0));
+                    break;
+                case opc_dload_0:
+                    emit(out, "var @1 = @2;", smapper.pushD(), lmapper.getD(0));
+                    break;
+                case opc_aload_1:
+                    emit(out, "var @1 = @2;", smapper.pushA(), lmapper.getA(1));
+                    break;
+                case opc_iload_1:
+                    emit(out, "var @1 = @2;", smapper.pushI(), lmapper.getI(1));
+                    break;
+                case opc_lload_1:
+                    emit(out, "var @1 = @2;", smapper.pushL(), lmapper.getL(1));
+                    break;
+                case opc_fload_1:
+                    emit(out, "var @1 = @2;", smapper.pushF(), lmapper.getF(1));
+                    break;
+                case opc_dload_1:
+                    emit(out, "var @1 = @2;", smapper.pushD(), lmapper.getD(1));
+                    break;
+                case opc_aload_2:
+                    emit(out, "var @1 = @2;", smapper.pushA(), lmapper.getA(2));
+                    break;
+                case opc_iload_2:
+                    emit(out, "var @1 = @2;", smapper.pushI(), lmapper.getI(2));
+                    break;
+                case opc_lload_2:
+                    emit(out, "var @1 = @2;", smapper.pushL(), lmapper.getL(2));
+                    break;
+                case opc_fload_2:
+                    emit(out, "var @1 = @2;", smapper.pushF(), lmapper.getF(2));
+                    break;
+                case opc_dload_2:
+                    emit(out, "var @1 = @2;", smapper.pushD(), lmapper.getD(2));
+                    break;
+                case opc_aload_3:
+                    emit(out, "var @1 = @2;", smapper.pushA(), lmapper.getA(3));
+                    break;
+                case opc_iload_3:
+                    emit(out, "var @1 = @2;", smapper.pushI(), lmapper.getI(3));
+                    break;
+                case opc_lload_3:
+                    emit(out, "var @1 = @2;", smapper.pushL(), lmapper.getL(3));
+                    break;
+                case opc_fload_3:
+                    emit(out, "var @1 = @2;", smapper.pushF(), lmapper.getF(3));
+                    break;
+                case opc_dload_3:
+                    emit(out, "var @1 = @2;", smapper.pushD(), lmapper.getD(3));
+                    break;
+                case opc_iload: {
+                    ++i;
+                    final int indx = wide ? readUShort(byteCodes, i++)
+                                          : readUByte(byteCodes, i);
+                    wide = false;
+                    emit(out, "var @1 = @2;",
+                         smapper.pushI(), lmapper.getI(indx));
+                    break;
+                }
+                case opc_lload: {
+                    ++i;
+                    final int indx = wide ? readUShort(byteCodes, i++)
+                                          : readUByte(byteCodes, i);
+                    wide = false;
+                    emit(out, "var @1 = @2;",
+                         smapper.pushL(), lmapper.getL(indx));
+                    break;
+                }
+                case opc_fload: {
+                    ++i;
+                    final int indx = wide ? readUShort(byteCodes, i++)
+                                          : readUByte(byteCodes, i);
+                    wide = false;
+                    emit(out, "var @1 = @2;",
+                         smapper.pushF(), lmapper.getF(indx));
+                    break;
+                }
+                case opc_dload: {
+                    ++i;
+                    final int indx = wide ? readUShort(byteCodes, i++)
+                                          : readUByte(byteCodes, i);
+                    wide = false;
+                    emit(out, "var @1 = @2;",
+                         smapper.pushD(), lmapper.getD(indx));
+                    break;
+                }
+                case opc_aload: {
+                    ++i;
+                    final int indx = wide ? readUShort(byteCodes, i++)
+                                          : readUByte(byteCodes, i);
+                    wide = false;
+                    emit(out, "var @1 = @2;",
+                         smapper.pushA(), lmapper.getA(indx));
+                    break;
+                }
+                case opc_istore: {
+                    ++i;
+                    final int indx = wide ? readUShort(byteCodes, i++)
+                                          : readUByte(byteCodes, i);
+                    wide = false;
+                    emit(out, "var @1 = @2;",
+                         lmapper.setI(indx), smapper.popI());
+                    break;
+                }
+                case opc_lstore: {
+                    ++i;
+                    final int indx = wide ? readUShort(byteCodes, i++)
+                                          : readUByte(byteCodes, i);
+                    wide = false;
+                    emit(out, "var @1 = @2;",
+                         lmapper.setL(indx), smapper.popL());
+                    break;
+                }
+                case opc_fstore: {
+                    ++i;
+                    final int indx = wide ? readUShort(byteCodes, i++)
+                                          : readUByte(byteCodes, i);
+                    wide = false;
+                    emit(out, "var @1 = @2;",
+                         lmapper.setF(indx), smapper.popF());
+                    break;
+                }
+                case opc_dstore: {
+                    ++i;
+                    final int indx = wide ? readUShort(byteCodes, i++)
+                                          : readUByte(byteCodes, i);
+                    wide = false;
+                    emit(out, "var @1 = @2;",
+                         lmapper.setD(indx), smapper.popD());
+                    break;
+                }
+                case opc_astore: {
+                    ++i;
+                    final int indx = wide ? readUShort(byteCodes, i++)
+                                          : readUByte(byteCodes, i);
+                    wide = false;
+                    emit(out, "var @1 = @2;",
+                         lmapper.setA(indx), smapper.popA());
+                    break;
+                }
+                case opc_astore_0:
+                    emit(out, "var @1 = @2;", lmapper.setA(0), smapper.popA());
+                    break;
+                case opc_istore_0:
+                    emit(out, "var @1 = @2;", lmapper.setI(0), smapper.popI());
+                    break;
+                case opc_lstore_0:
+                    emit(out, "var @1 = @2;", lmapper.setL(0), smapper.popL());
+                    break;
+                case opc_fstore_0:
+                    emit(out, "var @1 = @2;", lmapper.setF(0), smapper.popF());
+                    break;
+                case opc_dstore_0:
+                    emit(out, "var @1 = @2;", lmapper.setD(0), smapper.popD());
+                    break;
+                case opc_astore_1:
+                    emit(out, "var @1 = @2;", lmapper.setA(1), smapper.popA());
+                    break;
+                case opc_istore_1:
+                    emit(out, "var @1 = @2;", lmapper.setI(1), smapper.popI());
+                    break;
+                case opc_lstore_1:
+                    emit(out, "var @1 = @2;", lmapper.setL(1), smapper.popL());
+                    break;
+                case opc_fstore_1:
+                    emit(out, "var @1 = @2;", lmapper.setF(1), smapper.popF());
+                    break;
+                case opc_dstore_1:
+                    emit(out, "var @1 = @2;", lmapper.setD(1), smapper.popD());
+                    break;
+                case opc_astore_2:
+                    emit(out, "var @1 = @2;", lmapper.setA(2), smapper.popA());
+                    break;
+                case opc_istore_2:
+                    emit(out, "var @1 = @2;", lmapper.setI(2), smapper.popI());
+                    break;
+                case opc_lstore_2:
+                    emit(out, "var @1 = @2;", lmapper.setL(2), smapper.popL());
+                    break;
+                case opc_fstore_2:
+                    emit(out, "var @1 = @2;", lmapper.setF(2), smapper.popF());
+                    break;
+                case opc_dstore_2:
+                    emit(out, "var @1 = @2;", lmapper.setD(2), smapper.popD());
+                    break;
+                case opc_astore_3:
+                    emit(out, "var @1 = @2;", lmapper.setA(3), smapper.popA());
+                    break;
+                case opc_istore_3:
+                    emit(out, "var @1 = @2;", lmapper.setI(3), smapper.popI());
+                    break;
+                case opc_lstore_3:
+                    emit(out, "var @1 = @2;", lmapper.setL(3), smapper.popL());
+                    break;
+                case opc_fstore_3:
+                    emit(out, "var @1 = @2;", lmapper.setF(3), smapper.popF());
+                    break;
+                case opc_dstore_3:
+                    emit(out, "var @1 = @2;", lmapper.setD(3), smapper.popD());
+                    break;
+                case opc_iadd:
+                    emit(out, "@1 = @1.add32(@2);", smapper.getI(1), smapper.popI());
+                    break;
+                case opc_ladd:
+                    emit(out, "@1 = @1.add64(@2);", smapper.getL(1), smapper.popL());
+                    break;
+                case opc_fadd:
+                    emit(out, "@1 += @2;", smapper.getF(1), smapper.popF());
+                    break;
+                case opc_dadd:
+                    emit(out, "@1 += @2;", smapper.getD(1), smapper.popD());
+                    break;
+                case opc_isub:
+                    emit(out, "@1 = @1.sub32(@2);", smapper.getI(1), smapper.popI());
+                    break;
+                case opc_lsub:
+                    emit(out, "@1 = @1.sub64(@2);", smapper.getL(1), smapper.popL());
+                    break;
+                case opc_fsub:
+                    emit(out, "@1 -= @2;", smapper.getF(1), smapper.popF());
+                    break;
+                case opc_dsub:
+                    emit(out, "@1 -= @2;", smapper.getD(1), smapper.popD());
+                    break;
+                case opc_imul:
+                    emit(out, "@1 = @1.mul32(@2);", smapper.getI(1), smapper.popI());
+                    break;
+                case opc_lmul:
+                    emit(out, "@1 = @1.mul64(@2);", smapper.getL(1), smapper.popL());
+                    break;
+                case opc_fmul:
+                    emit(out, "@1 *= @2;", smapper.getF(1), smapper.popF());
+                    break;
+                case opc_dmul:
+                    emit(out, "@1 *= @2;", smapper.getD(1), smapper.popD());
+                    break;
+                case opc_idiv:
+                    emit(out, "@1 = @1.div32(@2);",
+                         smapper.getI(1), smapper.popI());
+                    break;
+                case opc_ldiv:
+                    emit(out, "@1 = @1.div64(@2);",
+                         smapper.getL(1), smapper.popL());
+                    break;
+                case opc_fdiv:
+                    emit(out, "@1 /= @2;", smapper.getF(1), smapper.popF());
+                    break;
+                case opc_ddiv:
+                    emit(out, "@1 /= @2;", smapper.getD(1), smapper.popD());
+                    break;
+                case opc_irem:
+                    emit(out, "@1 = @1.mod32(@2);",
+                         smapper.getI(1), smapper.popI());
+                    break;
+                case opc_lrem:
+                    emit(out, "@1 = @1.mod64(@2);",
+                         smapper.getL(1), smapper.popL());
+                    break;
+                case opc_frem:
+                    emit(out, "@1 %= @2;", smapper.getF(1), smapper.popF());
+                    break;
+                case opc_drem:
+                    emit(out, "@1 %= @2;", smapper.getD(1), smapper.popD());
+                    break;
+                case opc_iand:
+                    emit(out, "@1 &= @2;", smapper.getI(1), smapper.popI());
+                    break;
+                case opc_land:
+                    emit(out, "@1 = @1.and64(@2);", smapper.getL(1), smapper.popL());
+                    break;
+                case opc_ior:
+                    emit(out, "@1 |= @2;", smapper.getI(1), smapper.popI());
+                    break;
+                case opc_lor:
+                    emit(out, "@1 = @1.or64(@2);", smapper.getL(1), smapper.popL());
+                    break;
+                case opc_ixor:
+                    emit(out, "@1 ^= @2;", smapper.getI(1), smapper.popI());
+                    break;
+                case opc_lxor:
+                    emit(out, "@1 = @1.xor64(@2);", smapper.getL(1), smapper.popL());
+                    break;
+                case opc_ineg:
+                    emit(out, "@1 = @1.neg32();", smapper.getI(0));
+                    break;
+                case opc_lneg:
+                    emit(out, "@1 = @1.neg64();", smapper.getL(0));
+                    break;
+                case opc_fneg:
+                    emit(out, "@1 = -@1;", smapper.getF(0));
+                    break;
+                case opc_dneg:
+                    emit(out, "@1 = -@1;", smapper.getD(0));
+                    break;
+                case opc_ishl:
+                    emit(out, "@1 <<= @2;", smapper.getI(1), smapper.popI());
+                    break;
+                case opc_lshl:
+                    emit(out, "@1 = @1.shl64(@2);", smapper.getL(1), smapper.popI());
+                    break;
+                case opc_ishr:
+                    emit(out, "@1 >>= @2;", smapper.getI(1), smapper.popI());
+                    break;
+                case opc_lshr:
+                    emit(out, "@1 = @1.shr64(@2);", smapper.getL(1), smapper.popI());
+                    break;
+                case opc_iushr:
+                    emit(out, "@1 >>>= @2;", smapper.getI(1), smapper.popI());
+                    break;
+                case opc_lushr:
+                    emit(out, "@1 = @1.ushr64(@2);", smapper.getL(1), smapper.popI());
+                    break;
+                case opc_iinc: {
+                    ++i;
+                    final int varIndx = wide ? readUShort(byteCodes, i++)
+                                             : readUByte(byteCodes, i);
+                    ++i;
+                    final int incrBy = wide ? readShort(byteCodes, i++)
+                                            : byteCodes[i];
+                    wide = false;
+                    if (incrBy == 1) {
+                        emit(out, "@1++;", lmapper.getI(varIndx));
+                    } else {
+                        emit(out, "@1 += @2;",
+                             lmapper.getI(varIndx),
+                             Integer.toString(incrBy));
+                    }
+                    break;
+                }
+                case opc_return:
+                    emit(out, "return;");
+                    break;
+                case opc_ireturn:
+                    emit(out, "return @1;", smapper.popI());
+                    break;
+                case opc_lreturn:
+                    emit(out, "return @1;", smapper.popL());
+                    break;
+                case opc_freturn:
+                    emit(out, "return @1;", smapper.popF());
+                    break;
+                case opc_dreturn:
+                    emit(out, "return @1;", smapper.popD());
+                    break;
+                case opc_areturn:
+                    emit(out, "return @1;", smapper.popA());
+                    break;
+                case opc_i2l:
+                    emit(out, "var @2 = @1;", smapper.popI(), smapper.pushL());
+                    break;
+                case opc_i2f:
+                    emit(out, "var @2 = @1;", smapper.popI(), smapper.pushF());
+                    break;
+                case opc_i2d:
+                    emit(out, "var @2 = @1;", smapper.popI(), smapper.pushD());
+                    break;
+                case opc_l2i:
+                    emit(out, "var @2 = @1.toInt32();", smapper.popL(), smapper.pushI());
+                    break;
+                    // max int check?
+                case opc_l2f:
+                    emit(out, "var @2 = @1.toFP();", smapper.popL(), smapper.pushF());
+                    break;
+                case opc_l2d:
+                    emit(out, "var @2 = @1.toFP();", smapper.popL(), smapper.pushD());
+                    break;
+                case opc_f2d:
+                    emit(out, "var @2 = @1;", smapper.popF(), smapper.pushD());
+                    break;
+                case opc_d2f:
+                    emit(out, "var @2 = @1;", smapper.popD(), smapper.pushF());
+                    break;
+                case opc_f2i:
+                    emit(out, "var @2 = Math.floor(@1).toInt32();",
+                         smapper.popF(), smapper.pushI());
+                    break;
+                case opc_f2l:
+                    emit(out, "var @2 = Math.floor(@1).toLong();",
+                         smapper.popF(), smapper.pushL());
+                    break;
+                case opc_d2i:
+                    emit(out, "var @2 = Math.floor(@1).toInt32();",
+                         smapper.popD(), smapper.pushI());
+                    break;
+                case opc_d2l:
+                    emit(out, "var @2 = Math.floor(@1).toLong();",
+                         smapper.popD(), smapper.pushL());
+                    break;
+                case opc_i2b:
+                    emit(out, "var @1 = @1.toInt8();", smapper.getI(0));
+                    break;
+                case opc_i2c:
+                    out.append("{ /* number conversion */ }");
+                    break;
+                case opc_i2s:
+                    emit(out, "var @1 = @1.toInt16();", smapper.getI(0));
+                    break;
+                case opc_aconst_null:
+                    emit(out, "var @1 = null;", smapper.pushA());
+                    break;
+                case opc_iconst_m1:
+                    emit(out, "var @1 = -1;", smapper.pushI());
+                    break;
+                case opc_iconst_0:
+                    emit(out, "var @1 = 0;", smapper.pushI());
+                    break;
+                case opc_dconst_0:
+                    emit(out, "var @1 = 0;", smapper.pushD());
+                    break;
+                case opc_lconst_0:
+                    emit(out, "var @1 = 0;", smapper.pushL());
+                    break;
+                case opc_fconst_0:
+                    emit(out, "var @1 = 0;", smapper.pushF());
+                    break;
+                case opc_iconst_1:
+                    emit(out, "var @1 = 1;", smapper.pushI());
+                    break;
+                case opc_lconst_1:
+                    emit(out, "var @1 = 1;", smapper.pushL());
+                    break;
+                case opc_fconst_1:
+                    emit(out, "var @1 = 1;", smapper.pushF());
+                    break;
+                case opc_dconst_1:
+                    emit(out, "var @1 = 1;", smapper.pushD());
+                    break;
+                case opc_iconst_2:
+                    emit(out, "var @1 = 2;", smapper.pushI());
+                    break;
+                case opc_fconst_2:
+                    emit(out, "var @1 = 2;", smapper.pushF());
+                    break;
+                case opc_iconst_3:
+                    emit(out, "var @1 = 3;", smapper.pushI());
+                    break;
+                case opc_iconst_4:
+                    emit(out, "var @1 = 4;", smapper.pushI());
+                    break;
+                case opc_iconst_5:
+                    emit(out, "var @1 = 5;", smapper.pushI());
+                    break;
+                case opc_ldc: {
+                    int indx = readUByte(byteCodes, ++i);
+                    String v = encodeConstant(indx);
+                    int type = VarType.fromConstantType(jc.getTag(indx));
+                    emit(out, "var @1 = @2;", smapper.pushT(type), v);
+                    break;
+                }
+                case opc_ldc_w:
+                case opc_ldc2_w: {
+                    int indx = readIntArg(byteCodes, i);
+                    i += 2;
+                    String v = encodeConstant(indx);
+                    int type = VarType.fromConstantType(jc.getTag(indx));
+                    if (type == VarType.LONG) {
+                        final Long lv = new Long(v);
+                        final int low = (int)(lv.longValue() & 0xFFFFFFFF);
+                        final int hi = (int)(lv.longValue() >> 32);
+                        emit(out, "var @1 = 0x@3.next32(0x@2);", smapper.pushL(), 
+                                Integer.toHexString(low), Integer.toHexString(hi));
+                    } else {
+                        emit(out, "var @1 = @2;", smapper.pushT(type), v);
+                    }
+                    break;
+                }
+                case opc_lcmp:
+                    emit(out, "var @3 = @2.compare64(@1);",
+                         smapper.popL(), smapper.popL(), smapper.pushI());
+                    break;
+                case opc_fcmpl:
+                case opc_fcmpg:
+                    emit(out, "var @3 = (@2 == @1) ? 0 : ((@2 < @1) ? -1 : 1);",
+                         smapper.popF(), smapper.popF(), smapper.pushI());
+                    break;
+                case opc_dcmpl:
+                case opc_dcmpg:
+                    emit(out, "var @3 = (@2 == @1) ? 0 : ((@2 < @1) ? -1 : 1);",
+                         smapper.popD(), smapper.popD(), smapper.pushI());
+                    break;
+                case opc_if_acmpeq:
+                    i = generateIf(byteCodes, i, smapper.popA(), smapper.popA(),
+                                   "===");
+                    break;
+                case opc_if_acmpne:
+                    i = generateIf(byteCodes, i, smapper.popA(), smapper.popA(),
+                                   "!=");
+                    break;
+                case opc_if_icmpeq:
+                    i = generateIf(byteCodes, i, smapper.popI(), smapper.popI(),
+                                   "==");
+                    break;
+                case opc_ifeq: {
+                    int indx = i + readIntArg(byteCodes, i);
+                    emit(out, "if (@1 == 0) { gt = @2; continue; }",
+                         smapper.popI(), Integer.toString(indx));
+                    i += 2;
+                    break;
+                }
+                case opc_ifne: {
+                    int indx = i + readIntArg(byteCodes, i);
+                    emit(out, "if (@1 != 0) { gt = @2; continue; }",
+                         smapper.popI(), Integer.toString(indx));
+                    i += 2;
+                    break;
+                }
+                case opc_iflt: {
+                    int indx = i + readIntArg(byteCodes, i);
+                    emit(out, "if (@1 < 0) { gt = @2; continue; }",
+                         smapper.popI(), Integer.toString(indx));
+                    i += 2;
+                    break;
+                }
+                case opc_ifle: {
+                    int indx = i + readIntArg(byteCodes, i);
+                    emit(out, "if (@1 <= 0) { gt = @2; continue; }",
+                         smapper.popI(), Integer.toString(indx));
+                    i += 2;
+                    break;
+                }
+                case opc_ifgt: {
+                    int indx = i + readIntArg(byteCodes, i);
+                    emit(out, "if (@1 > 0) { gt = @2; continue; }",
+                         smapper.popI(), Integer.toString(indx));
+                    i += 2;
+                    break;
+                }
+                case opc_ifge: {
+                    int indx = i + readIntArg(byteCodes, i);
+                    emit(out, "if (@1 >= 0) { gt = @2; continue; }",
+                         smapper.popI(), Integer.toString(indx));
+                    i += 2;
+                    break;
+                }
+                case opc_ifnonnull: {
+                    int indx = i + readIntArg(byteCodes, i);
+                    emit(out, "if (@1 !== null) { gt = @2; continue; }",
+                         smapper.popA(), Integer.toString(indx));
+                    i += 2;
+                    break;
+                }
+                case opc_ifnull: {
+                    int indx = i + readIntArg(byteCodes, i);
+                    emit(out, "if (@1 === null) { gt = @2; continue; }",
+                         smapper.popA(), Integer.toString(indx));
+                    i += 2;
+                    break;
+                }
+                case opc_if_icmpne:
+                    i = generateIf(byteCodes, i, smapper.popI(), smapper.popI(),
+                                   "!=");
+                    break;
+                case opc_if_icmplt:
+                    i = generateIf(byteCodes, i, smapper.popI(), smapper.popI(),
+                                   "<");
+                    break;
+                case opc_if_icmple:
+                    i = generateIf(byteCodes, i, smapper.popI(), smapper.popI(),
+                                   "<=");
+                    break;
+                case opc_if_icmpgt:
+                    i = generateIf(byteCodes, i, smapper.popI(), smapper.popI(),
+                                   ">");
+                    break;
+                case opc_if_icmpge:
+                    i = generateIf(byteCodes, i, smapper.popI(), smapper.popI(),
+                                   ">=");
+                    break;
+                case opc_goto: {
+                    int indx = i + readIntArg(byteCodes, i);
+                    emit(out, "gt = @1; continue;", Integer.toString(indx));
+                    i += 2;
+                    break;
+                }
+                case opc_lookupswitch: {
+                    int table = i / 4 * 4 + 4;
+                    int dflt = i + readInt4(byteCodes, table);
+                    table += 4;
+                    int n = readInt4(byteCodes, table);
+                    table += 4;
+                    out.append("switch (").append(smapper.popI()).append(") {\n");
+                    while (n-- > 0) {
+                        int cnstnt = readInt4(byteCodes, table);
+                        table += 4;
+                        int offset = i + readInt4(byteCodes, table);
+                        table += 4;
+                        out.append("  case " + cnstnt).append(": gt = " + offset).append("; continue;\n");
+                    }
+                    out.append("  default: gt = " + dflt).append("; continue;\n}");
+                    i = table - 1;
+                    break;
+                }
+                case opc_tableswitch: {
+                    int table = i / 4 * 4 + 4;
+                    int dflt = i + readInt4(byteCodes, table);
+                    table += 4;
+                    int low = readInt4(byteCodes, table);
+                    table += 4;
+                    int high = readInt4(byteCodes, table);
+                    table += 4;
+                    out.append("switch (").append(smapper.popI()).append(") {\n");
+                    while (low <= high) {
+                        int offset = i + readInt4(byteCodes, table);
+                        table += 4;
+                        out.append("  case " + low).append(": gt = " + offset).append("; continue;\n");
+                        low++;
+                    }
+                    out.append("  default: gt = " + dflt).append("; continue;\n}");
+                    i = table - 1;
+                    break;
+                }
+                case opc_invokeinterface: {
+                    i = invokeVirtualMethod(byteCodes, i, smapper) + 2;
+                    break;
+                }
+                case opc_invokevirtual:
+                    i = invokeVirtualMethod(byteCodes, i, smapper);
+                    break;
+                case opc_invokespecial:
+                    i = invokeStaticMethod(byteCodes, i, smapper, false);
+                    break;
+                case opc_invokestatic:
+                    i = invokeStaticMethod(byteCodes, i, smapper, true);
+                    break;
+                case opc_new: {
+                    int indx = readIntArg(byteCodes, i);
+                    String ci = jc.getClassName(indx);
+                    emit(out, "var @1 = new @2;",
+                         smapper.pushA(), accessClass(ci.replace('/', '_')));
+                    addReference(ci);
+                    i += 2;
+                    break;
+                }
+                case opc_newarray:
+                    int atype = readUByte(byteCodes, ++i);
+                    String jvmType;
+                    switch (atype) {
+                        case 4: jvmType = "[Z"; break;
+                        case 5: jvmType = "[C"; break;
+                        case 6: jvmType = "[F"; break;
+                        case 7: jvmType = "[D"; break;
+                        case 8: jvmType = "[B"; break;
+                        case 9: jvmType = "[S"; break;
+                        case 10: jvmType = "[I"; break;
+                        case 11: jvmType = "[J"; break;
+                        default: throw new IllegalStateException("Array type: " + atype);
+                    }
+                    emit(out, "var @2 = Array.prototype.newArray__Ljava_lang_Object_2ZLjava_lang_String_2I(true, '@3', @1);",
+                         smapper.popI(), smapper.pushA(), jvmType);
+                    break;
+                case opc_anewarray: {
+                    int type = readIntArg(byteCodes, i);
+                    i += 2;
+                    String typeName = jc.getClassName(type);
+                    if (typeName.startsWith("[")) {
+                        typeName = "[" + typeName;
+                    } else {
+                        typeName = "[L" + typeName + ";";
+                    }
+                    emit(out, "var @2 = Array.prototype.newArray__Ljava_lang_Object_2ZLjava_lang_String_2I(false, '@3', @1);",
+                         smapper.popI(), smapper.pushA(), typeName);
+                    break;
+                }
+                case opc_multianewarray: {
+                    int type = readIntArg(byteCodes, i);
+                    i += 2;
+                    String typeName = jc.getClassName(type);
+                    int dim = readUByte(byteCodes, ++i);
+                    StringBuilder dims = new StringBuilder();
+                    dims.append('[');
+                    for (int d = 0; d < dim; d++) {
+                        if (d != 0) {
+                            dims.append(",");
+                        }
+                        dims.append(smapper.popI());
+                    }
+                    dims.append(']');
+                    emit(out, "var @2 = Array.prototype.multiNewArray__Ljava_lang_Object_2Ljava_lang_String_2_3II('@3', @1, 0);",
+                         dims.toString(), smapper.pushA(), typeName);
+                    break;
+                }
+                case opc_arraylength:
+                    emit(out, "var @2 = @1.length;",
+                         smapper.popA(), smapper.pushI());
+                    break;
+                case opc_lastore:
+                    emit(out, "@3.at(@2, @1);",
+                         smapper.popL(), smapper.popI(), smapper.popA());
+                    break;
+                case opc_fastore:
+                    emit(out, "@3.at(@2, @1);",
+                         smapper.popF(), smapper.popI(), smapper.popA());
+                    break;
+                case opc_dastore:
+                    emit(out, "@3.at(@2, @1);",
+                         smapper.popD(), smapper.popI(), smapper.popA());
+                    break;
+                case opc_aastore:
+                    emit(out, "@3.at(@2, @1);",
+                         smapper.popA(), smapper.popI(), smapper.popA());
+                    break;
+                case opc_iastore:
+                case opc_bastore:
+                case opc_castore:
+                case opc_sastore:
+                    emit(out, "@3.at(@2, @1);",
+                         smapper.popI(), smapper.popI(), smapper.popA());
+                    break;
+                case opc_laload:
+                    emit(out, "var @3 = @2.at(@1);",
+                         smapper.popI(), smapper.popA(), smapper.pushL());
+                    break;
+                case opc_faload:
+                    emit(out, "var @3 = @2.at(@1);",
+                         smapper.popI(), smapper.popA(), smapper.pushF());
+                    break;
+                case opc_daload:
+                    emit(out, "var @3 = @2.at(@1);",
+                         smapper.popI(), smapper.popA(), smapper.pushD());
+                    break;
+                case opc_aaload:
+                    emit(out, "var @3 = @2.at(@1);",
+                         smapper.popI(), smapper.popA(), smapper.pushA());
+                    break;
+                case opc_iaload:
+                case opc_baload:
+                case opc_caload:
+                case opc_saload:
+                    emit(out, "var @3 = @2.at(@1);",
+                         smapper.popI(), smapper.popA(), smapper.pushI());
+                    break;
+                case opc_pop:
+                case opc_pop2:
+                    smapper.pop(1);
+                    debug("/* pop */");
+                    break;
+                case opc_dup: {
+                    final Variable v = smapper.get(0);
+                    emit(out, "var @1 = @2;", smapper.pushT(v.getType()), v);
+                    break;
+                }
+                case opc_dup2: {
+                    final Variable vi1 = smapper.get(0);
+
+                    if (vi1.isCategory2()) {
+                        emit(out, "var @1 = @2;",
+                             smapper.pushT(vi1.getType()), vi1);
+                    } else {
+                        final Variable vi2 = smapper.get(1);
+                        emit(out, "var @1 = @2, @3 = @4;",
+                             smapper.pushT(vi2.getType()), vi2,
+                             smapper.pushT(vi1.getType()), vi1);
+                    }
+                    break;
+                }
+                case opc_dup_x1: {
+                    final Variable vi1 = smapper.pop();
+                    final Variable vi2 = smapper.pop();
+                    final Variable vo3 = smapper.pushT(vi1.getType());
+                    final Variable vo2 = smapper.pushT(vi2.getType());
+                    final Variable vo1 = smapper.pushT(vi1.getType());
+
+                    emit(out, "var @1 = @2, @3 = @4, @5 = @6;",
+                         vo1, vi1, vo2, vi2, vo3, vo1);
+                    break;
+                }
+                case opc_dup2_x1: {
+                    final Variable vi1 = smapper.pop();
+                    final Variable vi2 = smapper.pop();
+
+                    if (vi1.isCategory2()) {
+                        final Variable vo3 = smapper.pushT(vi1.getType());
+                        final Variable vo2 = smapper.pushT(vi2.getType());
+                        final Variable vo1 = smapper.pushT(vi1.getType());
+
+                        emit(out, "var @1 = @2, @3 = @4, @5 = @6;",
+                             vo1, vi1, vo2, vi2, vo3, vo1);
+                    } else {
+                        final Variable vi3 = smapper.pop();
+                        final Variable vo5 = smapper.pushT(vi2.getType());
+                        final Variable vo4 = smapper.pushT(vi1.getType());
+                        final Variable vo3 = smapper.pushT(vi3.getType());
+                        final Variable vo2 = smapper.pushT(vi2.getType());
+                        final Variable vo1 = smapper.pushT(vi1.getType());
+
+                        emit(out, "var @1 = @2, @3 = @4, @5 = @6,",
+                             vo1, vi1, vo2, vi2, vo3, vi3);
+                        emit(out, " @1 = @2, @3 = @4;",
+                             vo4, vo1, vo5, vo2);
+                    }
+                    break;
+                }
+                case opc_dup_x2: {
+                    final Variable vi1 = smapper.pop();
+                    final Variable vi2 = smapper.pop();
+
+                    if (vi2.isCategory2()) {
+                        final Variable vo3 = smapper.pushT(vi1.getType());
+                        final Variable vo2 = smapper.pushT(vi2.getType());
+                        final Variable vo1 = smapper.pushT(vi1.getType());
+
+                        emit(out, "var @1 = @2, @3 = @4, @5 = @6;",
+                             vo1, vi1, vo2, vi2, vo3, vo1);
+                    } else {
+                        final Variable vi3 = smapper.pop();
+                        final Variable vo4 = smapper.pushT(vi1.getType());
+                        final Variable vo3 = smapper.pushT(vi3.getType());
+                        final Variable vo2 = smapper.pushT(vi2.getType());
+                        final Variable vo1 = smapper.pushT(vi1.getType());
+
+                        emit(out, "var @1 = @2, @3 = @4, @5 = @6, @7 = @8;",
+                             vo1, vi1, vo2, vi2, vo3, vi3, vo4, vo1);
+                    }
+                    break;
+                }
+                case opc_dup2_x2: {
+                    final Variable vi1 = smapper.pop();
+                    final Variable vi2 = smapper.pop();
+
+                    if (vi1.isCategory2()) {
+                        if (vi2.isCategory2()) {
+                            final Variable vo3 = smapper.pushT(vi1.getType());
+                            final Variable vo2 = smapper.pushT(vi2.getType());
+                            final Variable vo1 = smapper.pushT(vi1.getType());
+
+                            emit(out, "var @1 = @2, @3 = @4, @5 = @6;",
+                                 vo1, vi1, vo2, vi2, vo3, vo1);
+                        } else {
+                            final Variable vi3 = smapper.pop();
+                            final Variable vo4 = smapper.pushT(vi1.getType());
+                            final Variable vo3 = smapper.pushT(vi3.getType());
+                            final Variable vo2 = smapper.pushT(vi2.getType());
+                            final Variable vo1 = smapper.pushT(vi1.getType());
+
+                            emit(out, "var @1 = @2, @3 = @4, @5 = @6, @7 = @8;",
+                                 vo1, vi1, vo2, vi2, vo3, vi3, vo4, vo1);
+                        }
+                    } else {
+                        final Variable vi3 = smapper.pop();
+
+                        if (vi3.isCategory2()) {
+                            final Variable vo5 = smapper.pushT(vi2.getType());
+                            final Variable vo4 = smapper.pushT(vi1.getType());
+                            final Variable vo3 = smapper.pushT(vi3.getType());
+                            final Variable vo2 = smapper.pushT(vi2.getType());
+                            final Variable vo1 = smapper.pushT(vi1.getType());
+
+                            emit(out, "var @1 = @2, @3 = @4, @5 = @6,",
+                                 vo1, vi1, vo2, vi2, vo3, vi3);
+                            emit(out, " @1 = @2, @3 = @4;",
+                                 vo4, vo1, vo5, vo2);
+                        } else {
+                            final Variable vi4 = smapper.pop();
+                            final Variable vo6 = smapper.pushT(vi2.getType());
+                            final Variable vo5 = smapper.pushT(vi1.getType());
+                            final Variable vo4 = smapper.pushT(vi4.getType());
+                            final Variable vo3 = smapper.pushT(vi3.getType());
+                            final Variable vo2 = smapper.pushT(vi2.getType());
+                            final Variable vo1 = smapper.pushT(vi1.getType());
+                            
+                            emit(out, "var @1 = @2, @3 = @4, @5 = @6, @7 = @8,",
+                                 vo1, vi1, vo2, vi2, vo3, vi3, vo4, vi4);
+                            emit(out, " @1 = @2, @3 = @4;",
+                                 vo5, vo1, vo6, vo2);
+                        }
+                    }
+                    break;
+                }
+                case opc_swap: {
+                    final Variable vi1 = smapper.get(0);
+                    final Variable vi2 = smapper.get(1);
+
+                    if (vi1.getType() == vi2.getType()) {
+                        final Variable tmp = smapper.pushT(vi1.getType());
+
+                        emit(out, "var @1 = @2, @2 = @3, @3 = @1;",
+                             tmp, vi1, vi2);
+                        smapper.pop(1);
+                    } else {
+                        smapper.pop(2);
+                        smapper.pushT(vi1.getType());
+                        smapper.pushT(vi2.getType());
+                    }
+                    break;
+                }
+                case opc_bipush:
+                    emit(out, "var @1 = @2;",
+                         smapper.pushI(), Integer.toString(byteCodes[++i]));
+                    break;
+                case opc_sipush:
+                    emit(out, "var @1 = @2;",
+                         smapper.pushI(),
+                         Integer.toString(readIntArg(byteCodes, i)));
+                    i += 2;
+                    break;
+                case opc_getfield: {
+                    int indx = readIntArg(byteCodes, i);
+                    String[] fi = jc.getFieldInfoName(indx);
+                    final int type = VarType.fromFieldType(fi[2].charAt(0));
+                    final String mangleClass = mangleSig(fi[0]);
+                    final String mangleClassAccess = accessClass(mangleClass);
+                    emit(out, "var @2 = @4(false)._@3.call(@1);",
+                         smapper.popA(),
+                         smapper.pushT(type), fi[1], mangleClassAccess
+                    );
+                    i += 2;
+                    break;
+                }
+                case opc_putfield: {
+                    int indx = readIntArg(byteCodes, i);
+                    String[] fi = jc.getFieldInfoName(indx);
+                    final int type = VarType.fromFieldType(fi[2].charAt(0));
+                    final String mangleClass = mangleSig(fi[0]);
+                    final String mangleClassAccess = accessClass(mangleClass);
+                    emit(out, "@4(false)._@3.call(@2, @1);",
+                         smapper.popT(type),
+                         smapper.popA(), fi[1], 
+                         mangleClassAccess
+                    );
+                    i += 2;
+                    break;
+                }
+                case opc_getstatic: {
+                    int indx = readIntArg(byteCodes, i);
+                    String[] fi = jc.getFieldInfoName(indx);
+                    final int type = VarType.fromFieldType(fi[2].charAt(0));
+                    emit(out, "var @1 = @2(false).constructor.@3;",
+                         smapper.pushT(type),
+                         accessClass(fi[0].replace('/', '_')), fi[1]);
+                    i += 2;
+                    addReference(fi[0]);
+                    break;
+                }
+                case opc_putstatic: {
+                    int indx = readIntArg(byteCodes, i);
+                    String[] fi = jc.getFieldInfoName(indx);
+                    final int type = VarType.fromFieldType(fi[2].charAt(0));
+                    emit(out, "@1(false).constructor.@2 = @3;",
+                         accessClass(fi[0].replace('/', '_')), fi[1],
+                         smapper.popT(type));
+                    i += 2;
+                    addReference(fi[0]);
+                    break;
+                }
+                case opc_checkcast: {
+                    int indx = readIntArg(byteCodes, i);
+                    final String type = jc.getClassName(indx);
+                    if (!type.startsWith("[")) {
+                        emit(out,
+                             "if (@1 !== null && !@1.$instOf_@2) throw {};",
+                             smapper.getA(0), type.replace('/', '_'));
+                    } else {
+                        emit(out, "vm.java_lang_Class(false).forName__Ljava_lang_Class_2Ljava_lang_String_2('@2').cast__Ljava_lang_Object_2Ljava_lang_Object_2(@1);",
+                             smapper.getA(0), type
+                        );
+                    }
+                    i += 2;
+                    break;
+                }
+                case opc_instanceof: {
+                    int indx = readIntArg(byteCodes, i);
+                    final String type = jc.getClassName(indx);
+                    if (!type.startsWith("[")) {
+                        emit(out, "var @2 = @1 != null && @1.$instOf_@3 ? 1 : 0;",
+                             smapper.popA(), smapper.pushI(),
+                             type.replace('/', '_'));
+                    } else {
+                        emit(out, "var @2 = vm.java_lang_Class(false).forName__Ljava_lang_Class_2Ljava_lang_String_2('@3').isInstance__ZLjava_lang_Object_2(@1);",
+                            smapper.popA(), smapper.pushI(),
+                            type
+                        );
+                    }
+                    i += 2;
+                    break;
+                }
+                case opc_athrow: {
+                    final Variable v = smapper.popA();
+                    smapper.clear();
+
+                    emit(out, "{ var @1 = @2; throw @2; }",
+                         smapper.pushA(), v);
+                    break;
+                }
+
+                case opc_monitorenter: {
+                    out.append("/* monitor enter */");
+                    smapper.popA();
+                    break;
+                }
+
+                case opc_monitorexit: {
+                    out.append("/* monitor exit */");
+                    smapper.popA();
+                    break;
+                }
+
+                case opc_wide:
+                    wide = true;
+                    break;
+
+                default: {
+                    wide = false;
+                    emit(out, "throw 'unknown bytecode @1';",
+                         Integer.toString(c));
+                }
+            }
+            if (debug(" //")) {
+                for (int j = prev; j <= i; j++) {
+                    out.append(" ");
+                    final int cc = readUByte(byteCodes, j);
+                    out.append(Integer.toString(cc));
+                }
+            }
+            out.append("\n");            
+        }
+        if (previousTrap != null) {
+            generateCatch(previousTrap);
+        }
+        out.append("  }\n");
+        out.append("};");
+    }
+
+    private int generateIf(byte[] byteCodes, int i,
+                           final Variable v2, final Variable v1,
+                           final String test) throws IOException {
+        int indx = i + readIntArg(byteCodes, i);
+        out.append("if (").append(v1)
+           .append(' ').append(test).append(' ')
+           .append(v2).append(") { gt = " + indx)
+           .append("; continue; }");
+        return i + 2;
+    }
+
+    private int readIntArg(byte[] byteCodes, int offsetInstruction) {
+        final int indxHi = byteCodes[offsetInstruction + 1] << 8;
+        final int indxLo = byteCodes[offsetInstruction + 2];
+        return (indxHi & 0xffffff00) | (indxLo & 0xff);
+    }
+    private int readInt4(byte[] byteCodes, int offset) {
+        final int d = byteCodes[offset + 0] << 24;
+        final int c = byteCodes[offset + 1] << 16;
+        final int b = byteCodes[offset + 2] << 8;
+        final int a = byteCodes[offset + 3];
+        return (d & 0xff000000) | (c & 0xff0000) | (b & 0xff00) | (a & 0xff);
+    }
+    private int readUByte(byte[] byteCodes, int offset) {
+        return byteCodes[offset] & 0xff;
+    }
+
+    private int readUShort(byte[] byteCodes, int offset) {
+        return ((byteCodes[offset] & 0xff) << 8)
+                    | (byteCodes[offset + 1] & 0xff);
+    }
+
+    private int readShort(byte[] byteCodes, int offset) {
+        return (byteCodes[offset] << 8)
+                    | (byteCodes[offset + 1] & 0xff);
+    }
+
+    private static void countArgs(String descriptor, char[] returnType, StringBuilder sig, StringBuilder cnt) {
+        int i = 0;
+        Boolean count = null;
+        boolean array = false;
+        sig.append("__");
+        int firstPos = sig.length();
+        while (i < descriptor.length()) {
+            char ch = descriptor.charAt(i++);
+            switch (ch) {
+                case '(':
+                    count = true;
+                    continue;
+                case ')':
+                    count = false;
+                    continue;
+                case 'B': 
+                case 'C': 
+                case 'D': 
+                case 'F': 
+                case 'I': 
+                case 'J': 
+                case 'S': 
+                case 'Z': 
+                    if (count) {
+                        if (array) {
+                            sig.append("_3");
+                        }
+                        sig.append(ch);
+                        if (ch == 'J' || ch == 'D') {
+                            cnt.append('1');
+                        } else {
+                            cnt.append('0');
+                        }
+                    } else {
+                        sig.insert(firstPos, ch);
+                        if (array) {
+                            returnType[0] = '[';
+                            sig.insert(firstPos, "_3");
+                        } else {
+                            returnType[0] = ch;
+                        }
+                    }
+                    array = false;
+                    continue;
+                case 'V': 
+                    assert !count;
+                    returnType[0] = 'V';
+                    sig.insert(firstPos, 'V');
+                    continue;
+                case 'L':
+                    int next = descriptor.indexOf(';', i);
+                    String realSig = mangleSig(descriptor, i - 1, next + 1);
+                    if (count) {
+                        if (array) {
+                            sig.append("_3");
+                        }
+                        sig.append(realSig);
+                        cnt.append('0');
+                    } else {
+                        sig.insert(firstPos, realSig);
+                        if (array) {
+                            sig.insert(firstPos, "_3");
+                        }
+                        returnType[0] = 'L';
+                    }
+                    i = next + 1;
+                    array = false;
+                    continue;
+                case '[':
+                    array = true;
+                    continue;
+                default:
+                    throw new IllegalStateException("Invalid char: " + ch);
+            }
+        }
+    }
+    
+    static String mangleSig(String sig) {
+        return mangleSig(sig, 0, sig.length());
+    }
+    
+    private static String mangleSig(String txt, int first, int last) {
+        StringBuilder sb = new StringBuilder();
+        for (int i = first; i < last; i++) {
+            final char ch = txt.charAt(i);
+            switch (ch) {
+                case '/': sb.append('_'); break;
+                case '_': sb.append("_1"); break;
+                case ';': sb.append("_2"); break;
+                case '[': sb.append("_3"); break;
+                default: sb.append(ch); break;
+            }
+        }
+        return sb.toString();
+    }
+
+    private static String findMethodName(MethodData m, StringBuilder cnt) {
+        StringBuilder name = new StringBuilder();
+        if ("<init>".equals(m.getName())) { // NOI18N
+            name.append("cons"); // NOI18N
+        } else if ("<clinit>".equals(m.getName())) { // NOI18N
+            name.append("class"); // NOI18N
+        } else {
+            name.append(m.getName());
+        } 
+        
+        countArgs(m.getInternalSig(), new char[1], name, cnt);
+        return name.toString();
+    }
+
+    static String findMethodName(String[] mi, StringBuilder cnt, char[] returnType) {
+        StringBuilder name = new StringBuilder();
+        String descr = mi[2];//mi.getDescriptor();
+        String nm= mi[1];
+        if ("<init>".equals(nm)) { // NOI18N
+            name.append("cons"); // NOI18N
+        } else {
+            name.append(nm);
+        }
+        countArgs(descr, returnType, name, cnt);
+        return name.toString();
+    }
+
+    private int invokeStaticMethod(byte[] byteCodes, int i, final StackMapper mapper, boolean isStatic)
+    throws IOException {
+        int methodIndex = readIntArg(byteCodes, i);
+        String[] mi = jc.getFieldInfoName(methodIndex);
+        char[] returnType = { 'V' };
+        StringBuilder cnt = new StringBuilder();
+        String mn = findMethodName(mi, cnt, returnType);
+
+        final int numArguments = isStatic ? cnt.length() : cnt.length() + 1;
+        final Variable[] vars = new Variable[numArguments];
+
+        for (int j = numArguments - 1; j >= 0; --j) {
+            vars[j] = mapper.pop();
+        }
+
+        if (returnType[0] != 'V') {
+            out.append("var ")
+               .append(mapper.pushT(VarType.fromFieldType(returnType[0])))
+               .append(" = ");
+        }
+
+        final String in = mi[0];
+        out.append(accessClass(in.replace('/', '_')));
+        out.append("(false).");
+        if (mn.startsWith("cons_")) {
+            out.append("constructor.");
+        }
+        out.append(mn);
+        if (isStatic) {
+            out.append('(');
+        } else {
+            out.append(".call(");
+        }
+        if (numArguments > 0) {
+            out.append(vars[0]);
+            for (int j = 1; j < numArguments; ++j) {
+                out.append(", ");
+                out.append(vars[j]);
+            }
+        }
+        out.append(");");
+        i += 2;
+        addReference(in);
+        return i;
+    }
+    private int invokeVirtualMethod(byte[] byteCodes, int i, final StackMapper mapper)
+    throws IOException {
+        int methodIndex = readIntArg(byteCodes, i);
+        String[] mi = jc.getFieldInfoName(methodIndex);
+        char[] returnType = { 'V' };
+        StringBuilder cnt = new StringBuilder();
+        String mn = findMethodName(mi, cnt, returnType);
+
+        final int numArguments = cnt.length() + 1;
+        final Variable[] vars = new Variable[numArguments];
+
+        for (int j = numArguments - 1; j >= 0; --j) {
+            vars[j] = mapper.pop();
+        }
+
+        if (returnType[0] != 'V') {
+            out.append("var ")
+               .append(mapper.pushT(VarType.fromFieldType(returnType[0])))
+               .append(" = ");
+        }
+
+        out.append(vars[0]).append('.');
+        out.append(mn);
+        out.append('(');
+        String sep = "";
+        for (int j = 1; j < numArguments; ++j) {
+            out.append(sep);
+            out.append(vars[j]);
+            sep = ", ";
+        }
+        out.append(");");
+        i += 2;
+        return i;
+    }
+
+    private void addReference(String cn) throws IOException {
+        if (requireReference(cn)) {
+            debug(" /* needs " + cn + " */");
+        }
+    }
+
+    private void outType(String d, StringBuilder out) {
+        int arr = 0;
+        while (d.charAt(0) == '[') {
+            out.append('A');
+            d = d.substring(1);
+        }
+        if (d.charAt(0) == 'L') {
+            assert d.charAt(d.length() - 1) == ';';
+            out.append(d.replace('/', '_').substring(0, d.length() - 1));
+        } else {
+            out.append(d);
+        }
+    }
+
+    private String encodeConstant(int entryIndex) throws IOException {
+        String[] classRef = { null };
+        String s = jc.stringValue(entryIndex, classRef);
+        if (classRef[0] != null) {
+            if (classRef[0].startsWith("[")) {
+                s = accessClass("java_lang_Class") + "(false).forName__Ljava_lang_Class_2Ljava_lang_String_2('" + classRef[0] + "');";
+            } else {
+                addReference(classRef[0]);
+                s = accessClass(s.replace('/', '_')) + "(false).constructor.$class";
+            }
+        }
+        return s;
+    }
+
+    private String javaScriptBody(String prefix, MethodData m, boolean isStatic) throws IOException {
+        byte[] arr = m.findAnnotationData(true);
+        if (arr == null) {
+            return null;
+        }
+        final String jvmType = "Lorg/apidesign/bck2brwsr/core/JavaScriptBody;";
+        class P extends AnnotationParser {
+            public P() {
+                super(false, true);
+            }
+            
+            int cnt;
+            String[] args = new String[30];
+            String body;
+            
+            @Override
+            protected void visitAttr(String type, String attr, String at, String value) {
+                if (type.equals(jvmType)) {
+                    if ("body".equals(attr)) {
+                        body = value;
+                    } else if ("args".equals(attr)) {
+                        args[cnt++] = value;
+                    } else {
+                        throw new IllegalArgumentException(attr);
+                    }
+                }
+            }
+        }
+        P p = new P();
+        p.parse(arr, jc);
+        if (p.body == null) {
+            return null;
+        }
+        StringBuilder cnt = new StringBuilder();
+        final String mn = findMethodName(m, cnt);
+        out.append(prefix).append(mn);
+        out.append(" = function(");
+        String space = "";
+        int index = 0;
+        for (int i = 0; i < cnt.length(); i++) {
+            out.append(space);
+            space = outputArg(out, p.args, index);
+            index++;
+        }
+        out.append(") {").append("\n");
+        out.append(p.body);
+        out.append("\n}\n");
+        return mn;
+    }
+    private static String className(ClassData jc) {
+        //return jc.getName().getInternalName().replace('/', '_');
+        return jc.getClassName().replace('/', '_');
+    }
+    
+    private static String[] findAnnotation(
+        byte[] arr, ClassData cd, final String className, 
+        final String... attrNames
+    ) throws IOException {
+        if (arr == null) {
+            return null;
+        }
+        final String[] values = new String[attrNames.length];
+        final boolean[] found = { false };
+        final String jvmType = "L" + className.replace('.', '/') + ";";
+        AnnotationParser ap = new AnnotationParser(false, true) {
+            @Override
+            protected void visitAttr(String type, String attr, String at, String value) {
+                if (type.equals(jvmType)) {
+                    found[0] = true;
+                    for (int i = 0; i < attrNames.length; i++) {
+                        if (attrNames[i].equals(attr)) {
+                            values[i] = value;
+                        }
+                    }
+                }
+            }
+            
+        };
+        ap.parse(arr, cd);
+        return found[0] ? values : null;
+    }
+
+    private CharSequence initField(FieldData v) {
+        final String is = v.getInternalSig();
+        if (is.length() == 1) {
+            switch (is.charAt(0)) {
+                case 'S':
+                case 'J':
+                case 'B':
+                case 'Z':
+                case 'C':
+                case 'I': return " = 0;";
+                case 'F': 
+                case 'D': return " = 0.0;";
+                default:
+                    throw new IllegalStateException(is);
+            }
+        }
+        return " = null;";
+    }
+
+    private void generateAnno(ClassData cd, final Appendable out, byte[] data) throws IOException {
+        AnnotationParser ap = new AnnotationParser(true, false) {
+            int[] cnt = new int[32];
+            int depth;
+            
+            @Override
+            protected void visitAnnotationStart(String attrType, boolean top) throws IOException {
+                final String slashType = attrType.substring(1, attrType.length() - 1);
+                requireReference(slashType);
+                
+                if (cnt[depth]++ > 0) {
+                    out.append(",");
+                }
+                if (top) {
+                    out.append('"').append(attrType).append("\" : ");
+                }
+                out.append("{\n");
+                cnt[++depth] = 0;
+            }
+
+            @Override
+            protected void visitAnnotationEnd(String type, boolean top) throws IOException {
+                out.append("\n}\n");
+                depth--;
+            }
+
+            @Override
+            protected void visitValueStart(String attrName, char type) throws IOException {
+                if (cnt[depth]++ > 0) {
+                    out.append(",\n");
+                }
+                cnt[++depth] = 0;
+                if (attrName != null) {
+                    out.append(attrName).append(" : ");
+                }
+                if (type == '[') {
+                    out.append("[");
+                }
+            }
+
+            @Override
+            protected void visitValueEnd(String attrName, char type) throws IOException {
+                if (type == '[') {
+                    out.append("]");
+                }
+                depth--;
+            }
+            
+            @Override
+            protected void visitAttr(String type, String attr, String attrType, String value) 
+            throws IOException {
+                if (attr == null && value == null) {
+                    return;
+                }
+                out.append(value);
+            }
+
+            @Override
+            protected void visitEnumAttr(String type, String attr, String attrType, String value) 
+            throws IOException {
+                final String slashType = attrType.substring(1, attrType.length() - 1);
+                requireReference(slashType);
+                
+                out.append(accessClass(slashType.replace('/', '_')))
+                   .append("(false).constructor.").append(value);
+            }
+        };
+        ap.parse(data, cd);
+    }
+
+    private static String outputArg(Appendable out, String[] args, int indx) throws IOException {
+        final String name = args[indx];
+        if (name == null) {
+            return "";
+        }
+        if (name.contains(",")) {
+            throw new IOException("Wrong parameter with ',': " + name);
+        }
+        out.append(name);
+        return ",";
+    }
+
+    private static void emit(final Appendable out,
+                             final String format,
+                             final CharSequence... params) throws IOException {
+        final int length = format.length();
+
+        int processed = 0;
+        int paramOffset = format.indexOf('@');
+        while ((paramOffset != -1) && (paramOffset < (length - 1))) {
+            final char paramChar = format.charAt(paramOffset + 1);
+            if ((paramChar >= '1') && (paramChar <= '9')) {
+                final int paramIndex = paramChar - '0' - 1;
+
+                out.append(format, processed, paramOffset);
+                out.append(params[paramIndex]);
+
+                ++paramOffset;
+                processed = paramOffset + 1;
+            }
+
+            paramOffset = format.indexOf('@', paramOffset + 1);
+        }
+
+        out.append(format, processed, length);
+    }
+
+    private void generateCatch(TrapData[] traps) throws IOException {
+        out.append("} catch (e) {\n");
+        int finallyPC = -1;
+        for (TrapData e : traps) {
+            if (e == null) {
+                break;
+            }
+            if (e.catch_cpx != 0) { //not finally
+                final String classInternalName = jc.getClassName(e.catch_cpx);
+                addReference(classInternalName);
+                if ("java/lang/Throwable".equals(classInternalName)) {
+                    out.append("if (e.$instOf_java_lang_Throwable) {");
+                    out.append("  var stA0 = e;");
+                    out.append("} else {");
+                    out.append("  var stA0 = vm.java_lang_Throwable(true);");
+                    out.append("  vm.java_lang_Throwable.cons__VLjava_lang_String_2.call(stA0, e.toString());");
+                    out.append("}");
+                    out.append("gt=" + e.handler_pc + "; continue;");
+                } else {
+                    out.append("if (e.$instOf_" + classInternalName.replace('/', '_') + ") {");
+                    out.append("gt=" + e.handler_pc + "; var stA0 = e; continue;");
+                    out.append("}\n");
+                }
+            } else {
+                finallyPC = e.handler_pc;
+            }
+        }
+        if (finallyPC == -1) {
+            out.append("throw e;");
+        } else {
+            out.append("gt=" + finallyPC + "; var stA0 = e; continue;");
+        }
+        out.append("\n}");
+    }
+}