2 * Back 2 Browser Bytecode Translator
3 * Copyright (C) 2012 Jaroslav Tulach <jaroslav.tulach@apidesign.org>
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.
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.
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.
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.javap.AnnotationParser;
24 import org.apidesign.javap.ClassData;
25 import org.apidesign.javap.FieldData;
26 import org.apidesign.javap.MethodData;
27 import org.apidesign.javap.StackMapIterator;
28 import static org.apidesign.javap.RuntimeConstants.*;
29 import org.apidesign.javap.TrapData;
30 import org.apidesign.javap.TrapDataIterator;
32 /** Translator of the code inside class files to JavaScript.
34 * @author Jaroslav Tulach <jtulach@netbeans.org>
36 abstract class ByteCodeToJavaScript {
40 protected ByteCodeToJavaScript(Appendable out) {
44 /* Collects additional required resources.
46 * @param internalClassName classes that were referenced and should be loaded in order the
47 * generated JavaScript code works properly. The names are in internal
48 * JVM form so String is <code>java/lang/String</code>.
50 protected abstract boolean requireReference(String internalClassName);
53 * @param resourcePath name of resources to read
55 protected abstract void requireScript(String resourcePath) throws IOException;
57 /** Allows subclasses to redefine what field a function representing a
58 * class gets assigned. By default it returns the suggested name followed
59 * by <code>" = "</code>;
61 * @param className suggested name of the class
63 /* protected */ String assignClass(String className) {
64 return className + " = ";
66 /* protected */ String accessClass(String classOperation) {
67 return classOperation;
70 /** Prints out a debug message.
72 * @param msg the message
73 * @return true if the message has been printed
76 boolean debug(String msg) throws IOException {
82 * Converts a given class file to a JavaScript version.
84 * @param classFile input stream with code of the .class file
85 * @return the initialization code for this class, if any. Otherwise <code>null</code>
87 * @throws IOException if something goes wrong during read or write or translating
90 public String compile(InputStream classFile) throws IOException {
91 this.jc = new ClassData(classFile);
92 if (jc.getMajor_version() < 50) {
93 throw new IOException("Can't compile " + jc.getClassName() + ". Class file version " + jc.getMajor_version() + "."
94 + jc.getMinor_version() + " - recompile with -target 1.6 (at least)."
97 byte[] arrData = jc.findAnnotationData(true);
98 String[] arr = findAnnotation(arrData, jc,
99 "org.apidesign.bck2brwsr.core.ExtraJavaScript",
100 "resource", "processByteCode"
103 requireScript(arr[0]);
104 if ("0".equals(arr[1])) {
108 String[] proto = findAnnotation(arrData, jc,
109 "org.apidesign.bck2brwsr.core.JavaScriptPrototype",
110 "container", "prototype"
112 StringArray toInitilize = new StringArray();
113 final String className = className(jc);
114 out.append("\n\n").append(assignClass(className));
115 out.append("function CLS() {");
116 out.append("\n if (!CLS.prototype.$instOf_").append(className).append(") {");
118 String sc = jc.getSuperClassName(); // with _
119 out.append("\n var pp = ").
120 append(accessClass(sc.replace('/', '_'))).append("(true);");
121 out.append("\n var p = CLS.prototype = pp;");
122 out.append("\n var c = p;");
123 out.append("\n var sprcls = pp.constructor.$class;");
125 out.append("\n var p = CLS.prototype = ").append(proto[1]).append(";");
126 if (proto[0] == null) {
129 out.append("\n var c = ").append(proto[0]).append(";");
130 out.append("\n var sprcls = null;");
132 for (FieldData v : jc.getFields()) {
134 out.append("\n CLS.").append(v.getName()).append(initField(v));
136 out.append("\n c._").append(v.getName()).append(" = function (v) {")
137 .append(" if (arguments.length == 1) this.fld_").
138 append(className).append('_').append(v.getName())
139 .append(" = v; return this.fld_").
140 append(className).append('_').append(v.getName())
144 for (MethodData m : jc.getMethods()) {
145 byte[] onlyArr = m.findAnnotationData(true);
146 String[] only = findAnnotation(onlyArr, jc,
147 "org.apidesign.bck2brwsr.core.JavaScriptOnly",
151 if (only[0] != null && only[1] != null) {
152 out.append("\n p.").append(only[0]).append(" = ")
153 .append(only[1]).append(";");
161 mn = generateStaticMethod(prefix, m, toInitilize);
163 if (m.isConstructor()) {
165 mn = generateInstanceMethod(prefix, m);
168 mn = generateInstanceMethod(prefix, m);
171 byte[] runAnno = m.findAnnotationData(false);
172 if (runAnno != null) {
173 out.append(prefix).append(mn).append(".anno = {");
174 generateAnno(jc, out, runAnno);
177 out.append(prefix).append(mn).append(".access = " + m.getAccess()).append(";");
179 out.append("\n c.constructor = CLS;");
180 out.append("\n c.$instOf_").append(className).append(" = true;");
181 for (String superInterface : jc.getSuperInterfaces()) {
182 out.append("\n c.$instOf_").append(superInterface.replace('/', '_')).append(" = true;");
184 out.append("\n CLS.$class = ");
185 out.append(accessClass("java_lang_Class(true);"));
186 out.append("\n CLS.$class.jvmName = '").append(jc.getClassName()).append("';");
187 out.append("\n CLS.$class.superclass = sprcls;");
188 out.append("\n CLS.$class.access = ").append(jc.getAccessFlags()+";");
189 out.append("\n CLS.$class.cnstr = CLS;");
190 byte[] classAnno = jc.findAnnotationData(false);
191 if (classAnno != null) {
192 out.append("\n CLS.$class.anno = {");
193 generateAnno(jc, out, classAnno);
197 out.append("\n if (arguments.length === 0) {");
198 out.append("\n if (!(this instanceof CLS)) {");
199 out.append("\n return new CLS();");
201 for (FieldData v : jc.getFields()) {
202 byte[] onlyArr = v.findAnnotationData(true);
203 String[] only = findAnnotation(onlyArr, jc,
204 "org.apidesign.bck2brwsr.core.JavaScriptOnly",
208 if (only[0] != null && only[1] != null) {
209 out.append("\n p.").append(only[0]).append(" = ")
210 .append(only[1]).append(";");
215 out.append("\n this.fld_").
216 append(className).append('_').
217 append(v.getName()).append(initField(v));
220 out.append("\n return this;");
222 out.append("\n return arguments[0] ? new CLS() : CLS.prototype;");
224 StringBuilder sb = new StringBuilder();
225 for (String init : toInitilize.toArray()) {
226 sb.append("\n").append(init).append("();");
228 return sb.toString();
230 private String generateStaticMethod(String prefix, MethodData m, StringArray toInitilize) throws IOException {
231 String jsb = javaScriptBody(prefix, m, true);
235 final String mn = findMethodName(m, new StringBuilder());
236 if (mn.equals("class__V")) {
237 toInitilize.add(accessClass(className(jc)) + "(false)." + mn);
239 generateMethod(prefix, mn, m);
243 private String generateInstanceMethod(String prefix, MethodData m) throws IOException {
244 String jsb = javaScriptBody(prefix, m, false);
248 final String mn = findMethodName(m, new StringBuilder());
249 generateMethod(prefix, mn, m);
253 private void generateMethod(String prefix, String name, MethodData m)
255 final StackMapIterator stackMapIterator = m.createStackMapIterator();
256 TrapDataIterator trap = m.getTrapDataIterator();
257 final LocalsMapper lmapper =
258 new LocalsMapper(stackMapIterator.getArguments());
260 out.append(prefix).append(name).append(" = function(");
261 lmapper.outputArguments(out, m.isStatic());
262 out.append(") {").append("\n");
264 final byte[] byteCodes = m.getCode();
265 if (byteCodes == null) {
266 out.append(" throw 'no code found for ")
267 .append(jc.getClassName()).append('.')
268 .append(m.getName()).append("';\n");
273 final StackMapper smapper = new StackMapper();
276 out.append(" var ").append(" lcA0 = this;\n");
279 int lastStackFrame = -1;
280 TrapData[] previousTrap = null;
281 boolean wide = false;
283 out.append("\n var gt = 0;\n for(;;) switch(gt) {\n");
284 for (int i = 0; i < byteCodes.length; i++) {
286 stackMapIterator.advanceTo(i);
287 boolean changeInCatch = trap.advanceTo(i);
288 if (changeInCatch || lastStackFrame != stackMapIterator.getFrameIndex()) {
289 if (previousTrap != null) {
290 generateCatch(previousTrap);
294 if (lastStackFrame != stackMapIterator.getFrameIndex()) {
295 lastStackFrame = stackMapIterator.getFrameIndex();
296 lmapper.syncWithFrameLocals(stackMapIterator.getFrameLocals());
297 smapper.syncWithFrameStack(stackMapIterator.getFrameStack());
298 out.append(" case " + i).append(": ");
299 changeInCatch = true;
301 debug(" /* " + i + " */ ");
303 if (changeInCatch && trap.useTry()) {
305 previousTrap = trap.current();
307 final int c = readUByte(byteCodes, i);
310 emit(out, "var @1 = @2;", smapper.pushA(), lmapper.getA(0));
313 emit(out, "var @1 = @2;", smapper.pushI(), lmapper.getI(0));
316 emit(out, "var @1 = @2;", smapper.pushL(), lmapper.getL(0));
319 emit(out, "var @1 = @2;", smapper.pushF(), lmapper.getF(0));
322 emit(out, "var @1 = @2;", smapper.pushD(), lmapper.getD(0));
325 emit(out, "var @1 = @2;", smapper.pushA(), lmapper.getA(1));
328 emit(out, "var @1 = @2;", smapper.pushI(), lmapper.getI(1));
331 emit(out, "var @1 = @2;", smapper.pushL(), lmapper.getL(1));
334 emit(out, "var @1 = @2;", smapper.pushF(), lmapper.getF(1));
337 emit(out, "var @1 = @2;", smapper.pushD(), lmapper.getD(1));
340 emit(out, "var @1 = @2;", smapper.pushA(), lmapper.getA(2));
343 emit(out, "var @1 = @2;", smapper.pushI(), lmapper.getI(2));
346 emit(out, "var @1 = @2;", smapper.pushL(), lmapper.getL(2));
349 emit(out, "var @1 = @2;", smapper.pushF(), lmapper.getF(2));
352 emit(out, "var @1 = @2;", smapper.pushD(), lmapper.getD(2));
355 emit(out, "var @1 = @2;", smapper.pushA(), lmapper.getA(3));
358 emit(out, "var @1 = @2;", smapper.pushI(), lmapper.getI(3));
361 emit(out, "var @1 = @2;", smapper.pushL(), lmapper.getL(3));
364 emit(out, "var @1 = @2;", smapper.pushF(), lmapper.getF(3));
367 emit(out, "var @1 = @2;", smapper.pushD(), lmapper.getD(3));
371 final int indx = wide ? readUShort(byteCodes, i++)
372 : readUByte(byteCodes, i);
374 emit(out, "var @1 = @2;",
375 smapper.pushI(), lmapper.getI(indx));
380 final int indx = wide ? readUShort(byteCodes, i++)
381 : readUByte(byteCodes, i);
383 emit(out, "var @1 = @2;",
384 smapper.pushL(), lmapper.getL(indx));
389 final int indx = wide ? readUShort(byteCodes, i++)
390 : readUByte(byteCodes, i);
392 emit(out, "var @1 = @2;",
393 smapper.pushF(), lmapper.getF(indx));
398 final int indx = wide ? readUShort(byteCodes, i++)
399 : readUByte(byteCodes, i);
401 emit(out, "var @1 = @2;",
402 smapper.pushD(), lmapper.getD(indx));
407 final int indx = wide ? readUShort(byteCodes, i++)
408 : readUByte(byteCodes, i);
410 emit(out, "var @1 = @2;",
411 smapper.pushA(), lmapper.getA(indx));
416 final int indx = wide ? readUShort(byteCodes, i++)
417 : readUByte(byteCodes, i);
419 emit(out, "var @1 = @2;",
420 lmapper.setI(indx), smapper.popI());
425 final int indx = wide ? readUShort(byteCodes, i++)
426 : readUByte(byteCodes, i);
428 emit(out, "var @1 = @2;",
429 lmapper.setL(indx), smapper.popL());
434 final int indx = wide ? readUShort(byteCodes, i++)
435 : readUByte(byteCodes, i);
437 emit(out, "var @1 = @2;",
438 lmapper.setF(indx), smapper.popF());
443 final int indx = wide ? readUShort(byteCodes, i++)
444 : readUByte(byteCodes, i);
446 emit(out, "var @1 = @2;",
447 lmapper.setD(indx), smapper.popD());
452 final int indx = wide ? readUShort(byteCodes, i++)
453 : readUByte(byteCodes, i);
455 emit(out, "var @1 = @2;",
456 lmapper.setA(indx), smapper.popA());
460 emit(out, "var @1 = @2;", lmapper.setA(0), smapper.popA());
463 emit(out, "var @1 = @2;", lmapper.setI(0), smapper.popI());
466 emit(out, "var @1 = @2;", lmapper.setL(0), smapper.popL());
469 emit(out, "var @1 = @2;", lmapper.setF(0), smapper.popF());
472 emit(out, "var @1 = @2;", lmapper.setD(0), smapper.popD());
475 emit(out, "var @1 = @2;", lmapper.setA(1), smapper.popA());
478 emit(out, "var @1 = @2;", lmapper.setI(1), smapper.popI());
481 emit(out, "var @1 = @2;", lmapper.setL(1), smapper.popL());
484 emit(out, "var @1 = @2;", lmapper.setF(1), smapper.popF());
487 emit(out, "var @1 = @2;", lmapper.setD(1), smapper.popD());
490 emit(out, "var @1 = @2;", lmapper.setA(2), smapper.popA());
493 emit(out, "var @1 = @2;", lmapper.setI(2), smapper.popI());
496 emit(out, "var @1 = @2;", lmapper.setL(2), smapper.popL());
499 emit(out, "var @1 = @2;", lmapper.setF(2), smapper.popF());
502 emit(out, "var @1 = @2;", lmapper.setD(2), smapper.popD());
505 emit(out, "var @1 = @2;", lmapper.setA(3), smapper.popA());
508 emit(out, "var @1 = @2;", lmapper.setI(3), smapper.popI());
511 emit(out, "var @1 = @2;", lmapper.setL(3), smapper.popL());
514 emit(out, "var @1 = @2;", lmapper.setF(3), smapper.popF());
517 emit(out, "var @1 = @2;", lmapper.setD(3), smapper.popD());
520 emit(out, "@1 = @1.add32(@2);", smapper.getI(1), smapper.popI());
523 emit(out, "@1 += @2;", smapper.getL(1), smapper.popL());
526 emit(out, "@1 += @2;", smapper.getF(1), smapper.popF());
529 emit(out, "@1 += @2;", smapper.getD(1), smapper.popD());
532 emit(out, "@1 = @1.sub32(@2);", smapper.getI(1), smapper.popI());
535 emit(out, "@1 -= @2;", smapper.getL(1), smapper.popL());
538 emit(out, "@1 -= @2;", smapper.getF(1), smapper.popF());
541 emit(out, "@1 -= @2;", smapper.getD(1), smapper.popD());
544 emit(out, "@1 = @1.mul32(@2);", smapper.getI(1), smapper.popI());
547 emit(out, "@1 *= @2;", smapper.getL(1), smapper.popL());
550 emit(out, "@1 *= @2;", smapper.getF(1), smapper.popF());
553 emit(out, "@1 *= @2;", smapper.getD(1), smapper.popD());
556 emit(out, "@1 = Math.floor(@1 / @2);",
557 smapper.getI(1), smapper.popI());
560 emit(out, "@1 = Math.floor(@1 / @2);",
561 smapper.getL(1), smapper.popL());
564 emit(out, "@1 /= @2;", smapper.getF(1), smapper.popF());
567 emit(out, "@1 /= @2;", smapper.getD(1), smapper.popD());
570 emit(out, "@1 %= @2;", smapper.getI(1), smapper.popI());
573 emit(out, "@1 %= @2;", smapper.getL(1), smapper.popL());
576 emit(out, "@1 %= @2;", smapper.getF(1), smapper.popF());
579 emit(out, "@1 %= @2;", smapper.getD(1), smapper.popD());
582 emit(out, "@1 &= @2;", smapper.getI(1), smapper.popI());
585 emit(out, "@1 &= @2;", smapper.getL(1), smapper.popL());
588 emit(out, "@1 |= @2;", smapper.getI(1), smapper.popI());
591 emit(out, "@1 |= @2;", smapper.getL(1), smapper.popL());
594 emit(out, "@1 ^= @2;", smapper.getI(1), smapper.popI());
597 emit(out, "@1 ^= @2;", smapper.getL(1), smapper.popL());
600 emit(out, "@1 = -@1;", smapper.getI(0));
603 emit(out, "@1 = -@1;", smapper.getL(0));
606 emit(out, "@1 = -@1;", smapper.getF(0));
609 emit(out, "@1 = -@1;", smapper.getD(0));
612 emit(out, "@1 <<= @2;", smapper.getI(1), smapper.popI());
615 emit(out, "@1 <<= @2;", smapper.getL(1), smapper.popI());
618 emit(out, "@1 >>= @2;", smapper.getI(1), smapper.popI());
621 emit(out, "@1 >>= @2;", smapper.getL(1), smapper.popI());
624 emit(out, "@1 >>>= @2;", smapper.getI(1), smapper.popI());
627 emit(out, "@1 >>>= @2;", smapper.getL(1), smapper.popI());
631 final int varIndx = wide ? readUShort(byteCodes, i++)
632 : readUByte(byteCodes, i);
634 final int incrBy = wide ? readIntArg(byteCodes, i++)
638 emit(out, "@1++;", lmapper.getI(varIndx));
640 emit(out, "@1 += @2;",
641 lmapper.getI(varIndx),
642 Integer.toString(incrBy));
647 emit(out, "return;");
650 emit(out, "return @1;", smapper.popI());
653 emit(out, "return @1;", smapper.popL());
656 emit(out, "return @1;", smapper.popF());
659 emit(out, "return @1;", smapper.popD());
662 emit(out, "return @1;", smapper.popA());
665 emit(out, "var @2 = @1;", smapper.popI(), smapper.pushL());
668 emit(out, "var @2 = @1;", smapper.popI(), smapper.pushF());
671 emit(out, "var @2 = @1;", smapper.popI(), smapper.pushD());
674 emit(out, "var @2 = @1;", smapper.popL(), smapper.pushI());
678 emit(out, "var @2 = @1;", smapper.popL(), smapper.pushF());
681 emit(out, "var @2 = @1;", smapper.popL(), smapper.pushD());
684 emit(out, "var @2 = @1;", smapper.popF(), smapper.pushD());
687 emit(out, "var @2 = @1;", smapper.popD(), smapper.pushF());
690 emit(out, "var @2 = Math.floor(@1);",
691 smapper.popF(), smapper.pushI());
694 emit(out, "var @2 = Math.floor(@1);",
695 smapper.popF(), smapper.pushL());
698 emit(out, "var @2 = Math.floor(@1);",
699 smapper.popD(), smapper.pushI());
702 emit(out, "var @2 = Math.floor(@1);",
703 smapper.popD(), smapper.pushL());
706 emit(out, "var @1 = @1.toInt8();", smapper.getI(0));
709 out.append("{ /* number conversion */ }");
712 emit(out, "var @1 = @1.toInt16();", smapper.getI(0));
714 case opc_aconst_null:
715 emit(out, "var @1 = null;", smapper.pushA());
718 emit(out, "var @1 = -1;", smapper.pushI());
721 emit(out, "var @1 = 0;", smapper.pushI());
724 emit(out, "var @1 = 0;", smapper.pushD());
727 emit(out, "var @1 = 0;", smapper.pushL());
730 emit(out, "var @1 = 0;", smapper.pushF());
733 emit(out, "var @1 = 1;", smapper.pushI());
736 emit(out, "var @1 = 1;", smapper.pushL());
739 emit(out, "var @1 = 1;", smapper.pushF());
742 emit(out, "var @1 = 1;", smapper.pushD());
745 emit(out, "var @1 = 2;", smapper.pushI());
748 emit(out, "var @1 = 2;", smapper.pushF());
751 emit(out, "var @1 = 3;", smapper.pushI());
754 emit(out, "var @1 = 4;", smapper.pushI());
757 emit(out, "var @1 = 5;", smapper.pushI());
760 int indx = readUByte(byteCodes, ++i);
761 String v = encodeConstant(indx);
762 int type = VarType.fromConstantType(jc.getTag(indx));
763 emit(out, "var @1 = @2;", smapper.pushT(type), v);
768 int indx = readIntArg(byteCodes, i);
770 String v = encodeConstant(indx);
771 int type = VarType.fromConstantType(jc.getTag(indx));
772 emit(out, "var @1 = @2;", smapper.pushT(type), v);
776 emit(out, "var @3 = (@2 == @1) ? 0 : ((@2 < @1) ? -1 : 1);",
777 smapper.popL(), smapper.popL(), smapper.pushI());
781 emit(out, "var @3 = (@2 == @1) ? 0 : ((@2 < @1) ? -1 : 1);",
782 smapper.popF(), smapper.popF(), smapper.pushI());
786 emit(out, "var @3 = (@2 == @1) ? 0 : ((@2 < @1) ? -1 : 1);",
787 smapper.popD(), smapper.popD(), smapper.pushI());
790 i = generateIf(byteCodes, i, smapper.popA(), smapper.popA(),
794 i = generateIf(byteCodes, i, smapper.popA(), smapper.popA(),
798 i = generateIf(byteCodes, i, smapper.popI(), smapper.popI(),
802 int indx = i + readIntArg(byteCodes, i);
803 emit(out, "if (@1 == 0) { gt = @2; continue; }",
804 smapper.popI(), Integer.toString(indx));
809 int indx = i + readIntArg(byteCodes, i);
810 emit(out, "if (@1 != 0) { gt = @2; continue; }",
811 smapper.popI(), Integer.toString(indx));
816 int indx = i + readIntArg(byteCodes, i);
817 emit(out, "if (@1 < 0) { gt = @2; continue; }",
818 smapper.popI(), Integer.toString(indx));
823 int indx = i + readIntArg(byteCodes, i);
824 emit(out, "if (@1 <= 0) { gt = @2; continue; }",
825 smapper.popI(), Integer.toString(indx));
830 int indx = i + readIntArg(byteCodes, i);
831 emit(out, "if (@1 > 0) { gt = @2; continue; }",
832 smapper.popI(), Integer.toString(indx));
837 int indx = i + readIntArg(byteCodes, i);
838 emit(out, "if (@1 >= 0) { gt = @2; continue; }",
839 smapper.popI(), Integer.toString(indx));
843 case opc_ifnonnull: {
844 int indx = i + readIntArg(byteCodes, i);
845 emit(out, "if (@1 !== null) { gt = @2; continue; }",
846 smapper.popA(), Integer.toString(indx));
851 int indx = i + readIntArg(byteCodes, i);
852 emit(out, "if (@1 === null) { gt = @2; continue; }",
853 smapper.popA(), Integer.toString(indx));
858 i = generateIf(byteCodes, i, smapper.popI(), smapper.popI(),
862 i = generateIf(byteCodes, i, smapper.popI(), smapper.popI(),
866 i = generateIf(byteCodes, i, smapper.popI(), smapper.popI(),
870 i = generateIf(byteCodes, i, smapper.popI(), smapper.popI(),
874 i = generateIf(byteCodes, i, smapper.popI(), smapper.popI(),
878 int indx = i + readIntArg(byteCodes, i);
879 emit(out, "gt = @1; continue;", Integer.toString(indx));
883 case opc_lookupswitch: {
884 int table = i / 4 * 4 + 4;
885 int dflt = i + readInt4(byteCodes, table);
887 int n = readInt4(byteCodes, table);
889 out.append("switch (").append(smapper.popI()).append(") {\n");
891 int cnstnt = readInt4(byteCodes, table);
893 int offset = i + readInt4(byteCodes, table);
895 out.append(" case " + cnstnt).append(": gt = " + offset).append("; continue;\n");
897 out.append(" default: gt = " + dflt).append("; continue;\n}");
901 case opc_tableswitch: {
902 int table = i / 4 * 4 + 4;
903 int dflt = i + readInt4(byteCodes, table);
905 int low = readInt4(byteCodes, table);
907 int high = readInt4(byteCodes, table);
909 out.append("switch (").append(smapper.popI()).append(") {\n");
910 while (low <= high) {
911 int offset = i + readInt4(byteCodes, table);
913 out.append(" case " + low).append(": gt = " + offset).append("; continue;\n");
916 out.append(" default: gt = " + dflt).append("; continue;\n}");
920 case opc_invokeinterface: {
921 i = invokeVirtualMethod(byteCodes, i, smapper) + 2;
924 case opc_invokevirtual:
925 i = invokeVirtualMethod(byteCodes, i, smapper);
927 case opc_invokespecial:
928 i = invokeStaticMethod(byteCodes, i, smapper, false);
930 case opc_invokestatic:
931 i = invokeStaticMethod(byteCodes, i, smapper, true);
934 int indx = readIntArg(byteCodes, i);
935 String ci = jc.getClassName(indx);
936 emit(out, "var @1 = new @2;",
937 smapper.pushA(), accessClass(ci.replace('/', '_')));
943 int atype = readUByte(byteCodes, ++i);
946 case 4: jvmType = "[Z"; break;
947 case 5: jvmType = "[C"; break;
948 case 6: jvmType = "[F"; break;
949 case 7: jvmType = "[D"; break;
950 case 8: jvmType = "[B"; break;
951 case 9: jvmType = "[S"; break;
952 case 10: jvmType = "[I"; break;
953 case 11: jvmType = "[J"; break;
954 default: throw new IllegalStateException("Array type: " + atype);
956 emit(out, "var @2 = Array.prototype.newArray__Ljava_lang_Object_2ZLjava_lang_String_2I(true, '@3', @1);",
957 smapper.popI(), smapper.pushA(), jvmType);
959 case opc_anewarray: {
960 int type = readIntArg(byteCodes, i);
962 String typeName = jc.getClassName(type);
963 if (typeName.startsWith("[")) {
964 typeName = "[" + typeName;
966 typeName = "[L" + typeName + ";";
968 emit(out, "var @2 = Array.prototype.newArray__Ljava_lang_Object_2ZLjava_lang_String_2I(false, '@3', @1);",
969 smapper.popI(), smapper.pushA(), typeName);
972 case opc_multianewarray: {
973 int type = readIntArg(byteCodes, i);
975 String typeName = jc.getClassName(type);
976 int dim = readUByte(byteCodes, ++i);
977 StringBuilder dims = new StringBuilder();
979 for (int d = 0; d < dim; d++) {
983 dims.append(smapper.popI());
986 emit(out, "var @2 = Array.prototype.multiNewArray__Ljava_lang_Object_2Ljava_lang_String_2_3II('@3', @1, 0);",
987 dims.toString(), smapper.pushA(), typeName);
990 case opc_arraylength:
991 emit(out, "var @2 = @1.length;",
992 smapper.popA(), smapper.pushI());
995 emit(out, "@3.at(@2, @1);",
996 smapper.popL(), smapper.popI(), smapper.popA());
999 emit(out, "@3.at(@2, @1);",
1000 smapper.popF(), smapper.popI(), smapper.popA());
1003 emit(out, "@3.at(@2, @1);",
1004 smapper.popD(), smapper.popI(), smapper.popA());
1007 emit(out, "@3.at(@2, @1);",
1008 smapper.popA(), smapper.popI(), smapper.popA());
1014 emit(out, "@3.at(@2, @1);",
1015 smapper.popI(), smapper.popI(), smapper.popA());
1018 emit(out, "var @3 = @2.at(@1);",
1019 smapper.popI(), smapper.popA(), smapper.pushL());
1022 emit(out, "var @3 = @2.at(@1);",
1023 smapper.popI(), smapper.popA(), smapper.pushF());
1026 emit(out, "var @3 = @2.at(@1);",
1027 smapper.popI(), smapper.popA(), smapper.pushD());
1030 emit(out, "var @3 = @2.at(@1);",
1031 smapper.popI(), smapper.popA(), smapper.pushA());
1037 emit(out, "var @3 = @2.at(@1);",
1038 smapper.popI(), smapper.popA(), smapper.pushI());
1046 final Variable v = smapper.get(0);
1047 emit(out, "var @1 = @2;", smapper.pushT(v.getType()), v);
1051 final Variable vi1 = smapper.get(0);
1053 if (vi1.isCategory2()) {
1054 emit(out, "var @1 = @2;",
1055 smapper.pushT(vi1.getType()), vi1);
1057 final Variable vi2 = smapper.get(1);
1058 emit(out, "var @1 = @2, @3 = @4;",
1059 smapper.pushT(vi2.getType()), vi2,
1060 smapper.pushT(vi1.getType()), vi1);
1065 final Variable vi1 = smapper.pop();
1066 final Variable vi2 = smapper.pop();
1067 final Variable vo3 = smapper.pushT(vi1.getType());
1068 final Variable vo2 = smapper.pushT(vi2.getType());
1069 final Variable vo1 = smapper.pushT(vi1.getType());
1071 emit(out, "var @1 = @2, @3 = @4, @5 = @6;",
1072 vo1, vi1, vo2, vi2, vo3, vo1);
1076 final Variable vi1 = smapper.pop();
1077 final Variable vi2 = smapper.pop();
1079 if (vi1.isCategory2()) {
1080 final Variable vo3 = smapper.pushT(vi1.getType());
1081 final Variable vo2 = smapper.pushT(vi2.getType());
1082 final Variable vo1 = smapper.pushT(vi1.getType());
1084 emit(out, "var @1 = @2, @3 = @4, @5 = @6;",
1085 vo1, vi1, vo2, vi2, vo3, vo1);
1087 final Variable vi3 = smapper.pop();
1088 final Variable vo5 = smapper.pushT(vi2.getType());
1089 final Variable vo4 = smapper.pushT(vi1.getType());
1090 final Variable vo3 = smapper.pushT(vi3.getType());
1091 final Variable vo2 = smapper.pushT(vi2.getType());
1092 final Variable vo1 = smapper.pushT(vi1.getType());
1094 emit(out, "var @1 = @2, @3 = @4, @5 = @6,",
1095 vo1, vi1, vo2, vi2, vo3, vi3);
1096 emit(out, " @1 = @2, @3 = @4;",
1097 vo4, vo1, vo5, vo2);
1102 final Variable vi1 = smapper.pop();
1103 final Variable vi2 = smapper.pop();
1105 if (vi2.isCategory2()) {
1106 final Variable vo3 = smapper.pushT(vi1.getType());
1107 final Variable vo2 = smapper.pushT(vi2.getType());
1108 final Variable vo1 = smapper.pushT(vi1.getType());
1110 emit(out, "var @1 = @2, @3 = @4, @5 = @6;",
1111 vo1, vi1, vo2, vi2, vo3, vo1);
1113 final Variable vi3 = smapper.pop();
1114 final Variable vo4 = smapper.pushT(vi1.getType());
1115 final Variable vo3 = smapper.pushT(vi3.getType());
1116 final Variable vo2 = smapper.pushT(vi2.getType());
1117 final Variable vo1 = smapper.pushT(vi1.getType());
1119 emit(out, "var @1 = @2, @3 = @4, @5 = @6, @7 = @8;",
1120 vo1, vi1, vo2, vi2, vo3, vi3, vo4, vo1);
1125 final Variable vi1 = smapper.pop();
1126 final Variable vi2 = smapper.pop();
1128 if (vi1.isCategory2()) {
1129 if (vi2.isCategory2()) {
1130 final Variable vo3 = smapper.pushT(vi1.getType());
1131 final Variable vo2 = smapper.pushT(vi2.getType());
1132 final Variable vo1 = smapper.pushT(vi1.getType());
1134 emit(out, "var @1 = @2, @3 = @4, @5 = @6;",
1135 vo1, vi1, vo2, vi2, vo3, vo1);
1137 final Variable vi3 = smapper.pop();
1138 final Variable vo4 = smapper.pushT(vi1.getType());
1139 final Variable vo3 = smapper.pushT(vi3.getType());
1140 final Variable vo2 = smapper.pushT(vi2.getType());
1141 final Variable vo1 = smapper.pushT(vi1.getType());
1143 emit(out, "var @1 = @2, @3 = @4, @5 = @6, @7 = @8;",
1144 vo1, vi1, vo2, vi2, vo3, vi3, vo4, vo1);
1147 final Variable vi3 = smapper.pop();
1149 if (vi3.isCategory2()) {
1150 final Variable vo5 = smapper.pushT(vi2.getType());
1151 final Variable vo4 = smapper.pushT(vi1.getType());
1152 final Variable vo3 = smapper.pushT(vi3.getType());
1153 final Variable vo2 = smapper.pushT(vi2.getType());
1154 final Variable vo1 = smapper.pushT(vi1.getType());
1156 emit(out, "var @1 = @2, @3 = @4, @5 = @6,",
1157 vo1, vi1, vo2, vi2, vo3, vi3);
1158 emit(out, " @1 = @2, @3 = @4;",
1159 vo4, vo1, vo5, vo2);
1161 final Variable vi4 = smapper.pop();
1162 final Variable vo6 = smapper.pushT(vi2.getType());
1163 final Variable vo5 = smapper.pushT(vi1.getType());
1164 final Variable vo4 = smapper.pushT(vi4.getType());
1165 final Variable vo3 = smapper.pushT(vi3.getType());
1166 final Variable vo2 = smapper.pushT(vi2.getType());
1167 final Variable vo1 = smapper.pushT(vi1.getType());
1169 emit(out, "var @1 = @2, @3 = @4, @5 = @6, @7 = @8,",
1170 vo1, vi1, vo2, vi2, vo3, vi3, vo4, vi4);
1171 emit(out, " @1 = @2, @3 = @4;",
1172 vo5, vo1, vo6, vo2);
1178 final Variable vi1 = smapper.get(0);
1179 final Variable vi2 = smapper.get(1);
1181 if (vi1.getType() == vi2.getType()) {
1182 final Variable tmp = smapper.pushT(vi1.getType());
1184 emit(out, "var @1 = @2, @2 = @3, @3 = @1;",
1189 smapper.pushT(vi1.getType());
1190 smapper.pushT(vi2.getType());
1195 emit(out, "var @1 = @2;",
1196 smapper.pushI(), Integer.toString(byteCodes[++i]));
1199 emit(out, "var @1 = @2;",
1201 Integer.toString(readIntArg(byteCodes, i)));
1204 case opc_getfield: {
1205 int indx = readIntArg(byteCodes, i);
1206 String[] fi = jc.getFieldInfoName(indx);
1207 final int type = VarType.fromFieldType(fi[2].charAt(0));
1208 final String mangleClass = mangleSig(fi[0]);
1209 final String mangleClassAccess = accessClass(mangleClass);
1210 emit(out, "var @2 = @4(false)._@3.call(@1);",
1212 smapper.pushT(type), fi[1], mangleClassAccess
1217 case opc_putfield: {
1218 int indx = readIntArg(byteCodes, i);
1219 String[] fi = jc.getFieldInfoName(indx);
1220 final int type = VarType.fromFieldType(fi[2].charAt(0));
1221 final String mangleClass = mangleSig(fi[0]);
1222 final String mangleClassAccess = accessClass(mangleClass);
1223 emit(out, "@4(false)._@3.call(@2, @1);",
1225 smapper.popA(), fi[1],
1231 case opc_getstatic: {
1232 int indx = readIntArg(byteCodes, i);
1233 String[] fi = jc.getFieldInfoName(indx);
1234 final int type = VarType.fromFieldType(fi[2].charAt(0));
1235 emit(out, "var @1 = @2(false).constructor.@3;",
1236 smapper.pushT(type),
1237 accessClass(fi[0].replace('/', '_')), fi[1]);
1239 addReference(fi[0]);
1242 case opc_putstatic: {
1243 int indx = readIntArg(byteCodes, i);
1244 String[] fi = jc.getFieldInfoName(indx);
1245 final int type = VarType.fromFieldType(fi[2].charAt(0));
1246 emit(out, "@1(false).constructor.@2 = @3;",
1247 accessClass(fi[0].replace('/', '_')), fi[1],
1248 smapper.popT(type));
1250 addReference(fi[0]);
1253 case opc_checkcast: {
1254 int indx = readIntArg(byteCodes, i);
1255 final String type = jc.getClassName(indx);
1256 if (!type.startsWith("[")) {
1258 "if (@1 !== null && !@1.$instOf_@2) throw {};",
1259 smapper.getA(0), type.replace('/', '_'));
1261 emit(out, "vm.java_lang_Class(false).forName__Ljava_lang_Class_2Ljava_lang_String_2('@2').cast__Ljava_lang_Object_2Ljava_lang_Object_2(@1);",
1262 smapper.getA(0), type
1268 case opc_instanceof: {
1269 int indx = readIntArg(byteCodes, i);
1270 final String type = jc.getClassName(indx);
1271 if (!type.startsWith("[")) {
1272 emit(out, "var @2 = @1 != null && @1.$instOf_@3 ? 1 : 0;",
1273 smapper.popA(), smapper.pushI(),
1274 type.replace('/', '_'));
1276 emit(out, "var @2 = vm.java_lang_Class(false).forName__Ljava_lang_Class_2Ljava_lang_String_2('@3').isInstance__ZLjava_lang_Object_2(@1);",
1277 smapper.popA(), smapper.pushI(),
1285 final Variable v = smapper.popA();
1288 emit(out, "{ var @1 = @2; throw @2; }",
1289 smapper.pushA(), v);
1293 case opc_monitorenter: {
1294 out.append("/* monitor enter */");
1299 case opc_monitorexit: {
1300 out.append("/* monitor exit */");
1311 emit(out, "throw 'unknown bytecode @1';",
1312 Integer.toString(c));
1316 for (int j = prev; j <= i; j++) {
1318 final int cc = readUByte(byteCodes, j);
1319 out.append(Integer.toString(cc));
1324 if (previousTrap != null) {
1325 generateCatch(previousTrap);
1331 private int generateIf(byte[] byteCodes, int i,
1332 final Variable v2, final Variable v1,
1333 final String test) throws IOException {
1334 int indx = i + readIntArg(byteCodes, i);
1335 out.append("if (").append(v1)
1336 .append(' ').append(test).append(' ')
1337 .append(v2).append(") { gt = " + indx)
1338 .append("; continue; }");
1342 private int readIntArg(byte[] byteCodes, int offsetInstruction) {
1343 final int indxHi = byteCodes[offsetInstruction + 1] << 8;
1344 final int indxLo = byteCodes[offsetInstruction + 2];
1345 return (indxHi & 0xffffff00) | (indxLo & 0xff);
1347 private int readInt4(byte[] byteCodes, int offsetInstruction) {
1348 final int d = byteCodes[offsetInstruction + 0] << 24;
1349 final int c = byteCodes[offsetInstruction + 1] << 16;
1350 final int b = byteCodes[offsetInstruction + 2] << 8;
1351 final int a = byteCodes[offsetInstruction + 3];
1352 return (d & 0xff000000) | (c & 0xff0000) | (b & 0xff00) | (a & 0xff);
1354 private int readUByte(byte[] byteCodes, int offsetInstruction) {
1355 return byteCodes[offsetInstruction] & 0xff;
1358 private int readUShort(byte[] byteCodes, int offsetInstruction) {
1359 return ((byteCodes[offsetInstruction] & 0xff) << 8)
1360 | (byteCodes[offsetInstruction + 1] & 0xff);
1363 private static void countArgs(String descriptor, char[] returnType, StringBuilder sig, StringBuilder cnt) {
1365 Boolean count = null;
1366 boolean array = false;
1368 int firstPos = sig.length();
1369 while (i < descriptor.length()) {
1370 char ch = descriptor.charAt(i++);
1391 if (ch == 'J' || ch == 'D') {
1397 sig.insert(firstPos, ch);
1399 returnType[0] = '[';
1400 sig.insert(firstPos, "_3");
1409 returnType[0] = 'V';
1410 sig.insert(firstPos, 'V');
1413 int next = descriptor.indexOf(';', i);
1414 String realSig = mangleSig(descriptor, i - 1, next + 1);
1419 sig.append(realSig);
1422 sig.insert(firstPos, realSig);
1424 sig.insert(firstPos, "_3");
1426 returnType[0] = 'L';
1435 throw new IllegalStateException("Invalid char: " + ch);
1440 static String mangleSig(String sig) {
1441 return mangleSig(sig, 0, sig.length());
1444 private static String mangleSig(String txt, int first, int last) {
1445 StringBuilder sb = new StringBuilder();
1446 for (int i = first; i < last; i++) {
1447 final char ch = txt.charAt(i);
1449 case '/': sb.append('_'); break;
1450 case '_': sb.append("_1"); break;
1451 case ';': sb.append("_2"); break;
1452 case '[': sb.append("_3"); break;
1453 default: sb.append(ch); break;
1456 return sb.toString();
1459 private static String findMethodName(MethodData m, StringBuilder cnt) {
1460 StringBuilder name = new StringBuilder();
1461 if ("<init>".equals(m.getName())) { // NOI18N
1462 name.append("cons"); // NOI18N
1463 } else if ("<clinit>".equals(m.getName())) { // NOI18N
1464 name.append("class"); // NOI18N
1466 name.append(m.getName());
1469 countArgs(m.getInternalSig(), new char[1], name, cnt);
1470 return name.toString();
1473 static String findMethodName(String[] mi, StringBuilder cnt, char[] returnType) {
1474 StringBuilder name = new StringBuilder();
1475 String descr = mi[2];//mi.getDescriptor();
1477 if ("<init>".equals(nm)) { // NOI18N
1478 name.append("cons"); // NOI18N
1482 countArgs(descr, returnType, name, cnt);
1483 return name.toString();
1486 private int invokeStaticMethod(byte[] byteCodes, int i, final StackMapper mapper, boolean isStatic)
1487 throws IOException {
1488 int methodIndex = readIntArg(byteCodes, i);
1489 String[] mi = jc.getFieldInfoName(methodIndex);
1490 char[] returnType = { 'V' };
1491 StringBuilder cnt = new StringBuilder();
1492 String mn = findMethodName(mi, cnt, returnType);
1494 final int numArguments = isStatic ? cnt.length() : cnt.length() + 1;
1495 final Variable[] vars = new Variable[numArguments];
1497 for (int j = numArguments - 1; j >= 0; --j) {
1498 vars[j] = mapper.pop();
1501 if (returnType[0] != 'V') {
1503 .append(mapper.pushT(VarType.fromFieldType(returnType[0])))
1507 final String in = mi[0];
1508 out.append(accessClass(in.replace('/', '_')));
1509 out.append("(false).");
1510 if (mn.startsWith("cons_")) {
1511 out.append("constructor.");
1517 out.append(".call(");
1519 if (numArguments > 0) {
1520 out.append(vars[0]);
1521 for (int j = 1; j < numArguments; ++j) {
1523 out.append(vars[j]);
1531 private int invokeVirtualMethod(byte[] byteCodes, int i, final StackMapper mapper)
1532 throws IOException {
1533 int methodIndex = readIntArg(byteCodes, i);
1534 String[] mi = jc.getFieldInfoName(methodIndex);
1535 char[] returnType = { 'V' };
1536 StringBuilder cnt = new StringBuilder();
1537 String mn = findMethodName(mi, cnt, returnType);
1539 final int numArguments = cnt.length() + 1;
1540 final Variable[] vars = new Variable[numArguments];
1542 for (int j = numArguments - 1; j >= 0; --j) {
1543 vars[j] = mapper.pop();
1546 if (returnType[0] != 'V') {
1548 .append(mapper.pushT(VarType.fromFieldType(returnType[0])))
1552 out.append(vars[0]).append('.');
1556 for (int j = 1; j < numArguments; ++j) {
1558 out.append(vars[j]);
1566 private void addReference(String cn) throws IOException {
1567 if (requireReference(cn)) {
1568 debug(" /* needs " + cn + " */");
1572 private void outType(String d, StringBuilder out) {
1574 while (d.charAt(0) == '[') {
1578 if (d.charAt(0) == 'L') {
1579 assert d.charAt(d.length() - 1) == ';';
1580 out.append(d.replace('/', '_').substring(0, d.length() - 1));
1586 private String encodeConstant(int entryIndex) throws IOException {
1587 String[] classRef = { null };
1588 String s = jc.stringValue(entryIndex, classRef);
1589 if (classRef[0] != null) {
1590 if (classRef[0].startsWith("[")) {
1591 s = accessClass("java_lang_Class") + "(false).forName__Ljava_lang_Class_2Ljava_lang_String_2('" + classRef[0] + "');";
1593 addReference(classRef[0]);
1594 s = accessClass(s.replace('/', '_')) + "(false).constructor.$class";
1600 private String javaScriptBody(String prefix, MethodData m, boolean isStatic) throws IOException {
1601 byte[] arr = m.findAnnotationData(true);
1605 final String jvmType = "Lorg/apidesign/bck2brwsr/core/JavaScriptBody;";
1606 class P extends AnnotationParser {
1612 String[] args = new String[30];
1616 protected void visitAttr(String type, String attr, String at, String value) {
1617 if (type.equals(jvmType)) {
1618 if ("body".equals(attr)) {
1620 } else if ("args".equals(attr)) {
1621 args[cnt++] = value;
1623 throw new IllegalArgumentException(attr);
1630 if (p.body == null) {
1633 StringBuilder cnt = new StringBuilder();
1634 final String mn = findMethodName(m, cnt);
1635 out.append(prefix).append(mn);
1636 out.append(" = function(");
1639 for (int i = 0; i < cnt.length(); i++) {
1641 space = outputArg(out, p.args, index);
1644 out.append(") {").append("\n");
1646 out.append("\n}\n");
1649 private static String className(ClassData jc) {
1650 //return jc.getName().getInternalName().replace('/', '_');
1651 return jc.getClassName().replace('/', '_');
1654 private static String[] findAnnotation(
1655 byte[] arr, ClassData cd, final String className,
1656 final String... attrNames
1657 ) throws IOException {
1661 final String[] values = new String[attrNames.length];
1662 final boolean[] found = { false };
1663 final String jvmType = "L" + className.replace('.', '/') + ";";
1664 AnnotationParser ap = new AnnotationParser(false) {
1666 protected void visitAttr(String type, String attr, String at, String value) {
1667 if (type.equals(jvmType)) {
1669 for (int i = 0; i < attrNames.length; i++) {
1670 if (attrNames[i].equals(attr)) {
1679 return found[0] ? values : null;
1682 private CharSequence initField(FieldData v) {
1683 final String is = v.getInternalSig();
1684 if (is.length() == 1) {
1685 switch (is.charAt(0)) {
1691 case 'I': return " = 0;";
1693 case 'D': return " = 0.0;";
1695 throw new IllegalStateException(is);
1701 private static void generateAnno(ClassData cd, final Appendable out, byte[] data) throws IOException {
1702 AnnotationParser ap = new AnnotationParser(true) {
1707 protected void visitAnnotationStart(String type) throws IOException {
1711 out.append('"').append(type).append("\" : {\n");
1716 protected void visitAnnotationEnd(String type) throws IOException {
1717 out.append("\n}\n");
1721 protected void visitAttr(String type, String attr, String attrType, String value)
1722 throws IOException {
1729 out.append(attr).append("__").append(attrType).append(" : ").append(value);
1735 private static String outputArg(Appendable out, String[] args, int indx) throws IOException {
1736 final String name = args[indx];
1740 if (name.contains(",")) {
1741 throw new IOException("Wrong parameter with ',': " + name);
1747 private static void emit(final Appendable out,
1748 final String format,
1749 final CharSequence... params) throws IOException {
1750 final int length = format.length();
1753 int paramOffset = format.indexOf('@');
1754 while ((paramOffset != -1) && (paramOffset < (length - 1))) {
1755 final char paramChar = format.charAt(paramOffset + 1);
1756 if ((paramChar >= '1') && (paramChar <= '9')) {
1757 final int paramIndex = paramChar - '0' - 1;
1759 out.append(format, processed, paramOffset);
1760 out.append(params[paramIndex]);
1763 processed = paramOffset + 1;
1766 paramOffset = format.indexOf('@', paramOffset + 1);
1769 out.append(format, processed, length);
1772 private void generateCatch(TrapData[] traps) throws IOException {
1773 out.append("} catch (e) {\n");
1775 for (TrapData e : traps) {
1779 if (e.catch_cpx != 0) { //not finally
1780 final String classInternalName = jc.getClassName(e.catch_cpx);
1781 addReference(classInternalName);
1782 if ("java/lang/Throwable".equals(classInternalName)) {
1783 out.append("if (e.$instOf_java_lang_Throwable) {");
1784 out.append(" var stA0 = e;");
1785 out.append("} else {");
1786 out.append(" var stA0 = vm.java_lang_Throwable(true);");
1787 out.append(" vm.java_lang_Throwable.cons__VLjava_lang_String_2.call(stA0, e.toString());");
1789 out.append("gt=" + e.handler_pc + "; continue;");
1791 out.append("if (e.$instOf_" + classInternalName.replace('/', '_') + ") {");
1792 out.append("gt=" + e.handler_pc + "; var stA0 = e; continue;");
1796 finallyPC = e.handler_pc;
1799 if (finallyPC == -1) {
1800 out.append("throw e;");
1802 out.append("gt=" + finallyPC + "; var stA0 = e; continue;");