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 = @1.add64(@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 = @1.sub64(@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 = @1.mul64(@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 = @1.div64(@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 = @1.and64(@2);", smapper.getL(1), smapper.popL());
588 emit(out, "@1 |= @2;", smapper.getI(1), smapper.popI());
591 emit(out, "@1 = @1.or64(@2);", smapper.getL(1), smapper.popL());
594 emit(out, "@1 ^= @2;", smapper.getI(1), smapper.popI());
597 emit(out, "@1 = @1.xor64(@2)", smapper.getL(1), smapper.popL());
600 emit(out, "@1 = -@1;", smapper.getI(0));
603 emit(out, "@1 = @1.neg64();", 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 = @1.shl64(@2);", smapper.getL(1), smapper.popI());
618 emit(out, "@1 >>= @2;", smapper.getI(1), smapper.popI());
621 emit(out, "@1 = @1.shr64(@2);", smapper.getL(1), smapper.popI());
624 emit(out, "@1 >>>= @2;", smapper.getI(1), smapper.popI());
627 emit(out, "@1 = @1.ushr64(@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.toInt32();", smapper.popL(), smapper.pushI());
678 emit(out, "var @2 = @1.toFP();", smapper.popL(), smapper.pushF());
681 emit(out, "var @2 = @1.toFP();", 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).toLong();",
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).toLong();",
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 if (type == VarType.LONG) {
773 final Long lv = new Long(v);
774 final int low = (int)(lv.longValue() & 0xFFFFFFFF);
775 final int hi = (int)(lv.longValue() >> 32);
776 emit(out, "var @1 = 0x@3.next32(0x@2);", smapper.pushL(),
777 Integer.toHexString(low), Integer.toHexString(hi));
779 emit(out, "var @1 = @2;", smapper.pushT(type), v);
784 emit(out, "var @3 = @2.compare64(@1);",
785 smapper.popL(), smapper.popL(), smapper.pushI());
789 emit(out, "var @3 = (@2 == @1) ? 0 : ((@2 < @1) ? -1 : 1);",
790 smapper.popF(), smapper.popF(), smapper.pushI());
794 emit(out, "var @3 = (@2 == @1) ? 0 : ((@2 < @1) ? -1 : 1);",
795 smapper.popD(), smapper.popD(), smapper.pushI());
798 i = generateIf(byteCodes, i, smapper.popA(), smapper.popA(),
802 i = generateIf(byteCodes, i, smapper.popA(), smapper.popA(),
806 i = generateIf(byteCodes, i, smapper.popI(), smapper.popI(),
810 int indx = i + readIntArg(byteCodes, i);
811 emit(out, "if (@1 == 0) { gt = @2; continue; }",
812 smapper.popI(), Integer.toString(indx));
817 int indx = i + readIntArg(byteCodes, i);
818 emit(out, "if (@1 != 0) { gt = @2; continue; }",
819 smapper.popI(), Integer.toString(indx));
824 int indx = i + readIntArg(byteCodes, i);
825 emit(out, "if (@1 < 0) { gt = @2; continue; }",
826 smapper.popI(), Integer.toString(indx));
831 int indx = i + readIntArg(byteCodes, i);
832 emit(out, "if (@1 <= 0) { gt = @2; continue; }",
833 smapper.popI(), Integer.toString(indx));
838 int indx = i + readIntArg(byteCodes, i);
839 emit(out, "if (@1 > 0) { gt = @2; continue; }",
840 smapper.popI(), Integer.toString(indx));
845 int indx = i + readIntArg(byteCodes, i);
846 emit(out, "if (@1 >= 0) { gt = @2; continue; }",
847 smapper.popI(), Integer.toString(indx));
851 case opc_ifnonnull: {
852 int indx = i + readIntArg(byteCodes, i);
853 emit(out, "if (@1 !== null) { gt = @2; continue; }",
854 smapper.popA(), Integer.toString(indx));
859 int indx = i + readIntArg(byteCodes, i);
860 emit(out, "if (@1 === null) { gt = @2; continue; }",
861 smapper.popA(), Integer.toString(indx));
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 i = generateIf(byteCodes, i, smapper.popI(), smapper.popI(),
882 i = generateIf(byteCodes, i, smapper.popI(), smapper.popI(),
886 int indx = i + readIntArg(byteCodes, i);
887 emit(out, "gt = @1; continue;", Integer.toString(indx));
891 case opc_lookupswitch: {
892 int table = i / 4 * 4 + 4;
893 int dflt = i + readInt4(byteCodes, table);
895 int n = readInt4(byteCodes, table);
897 out.append("switch (").append(smapper.popI()).append(") {\n");
899 int cnstnt = readInt4(byteCodes, table);
901 int offset = i + readInt4(byteCodes, table);
903 out.append(" case " + cnstnt).append(": gt = " + offset).append("; continue;\n");
905 out.append(" default: gt = " + dflt).append("; continue;\n}");
909 case opc_tableswitch: {
910 int table = i / 4 * 4 + 4;
911 int dflt = i + readInt4(byteCodes, table);
913 int low = readInt4(byteCodes, table);
915 int high = readInt4(byteCodes, table);
917 out.append("switch (").append(smapper.popI()).append(") {\n");
918 while (low <= high) {
919 int offset = i + readInt4(byteCodes, table);
921 out.append(" case " + low).append(": gt = " + offset).append("; continue;\n");
924 out.append(" default: gt = " + dflt).append("; continue;\n}");
928 case opc_invokeinterface: {
929 i = invokeVirtualMethod(byteCodes, i, smapper) + 2;
932 case opc_invokevirtual:
933 i = invokeVirtualMethod(byteCodes, i, smapper);
935 case opc_invokespecial:
936 i = invokeStaticMethod(byteCodes, i, smapper, false);
938 case opc_invokestatic:
939 i = invokeStaticMethod(byteCodes, i, smapper, true);
942 int indx = readIntArg(byteCodes, i);
943 String ci = jc.getClassName(indx);
944 emit(out, "var @1 = new @2;",
945 smapper.pushA(), accessClass(ci.replace('/', '_')));
951 int atype = readUByte(byteCodes, ++i);
954 case 4: jvmType = "[Z"; break;
955 case 5: jvmType = "[C"; break;
956 case 6: jvmType = "[F"; break;
957 case 7: jvmType = "[D"; break;
958 case 8: jvmType = "[B"; break;
959 case 9: jvmType = "[S"; break;
960 case 10: jvmType = "[I"; break;
961 case 11: jvmType = "[J"; break;
962 default: throw new IllegalStateException("Array type: " + atype);
964 emit(out, "var @2 = Array.prototype.newArray__Ljava_lang_Object_2ZLjava_lang_String_2I(true, '@3', @1);",
965 smapper.popI(), smapper.pushA(), jvmType);
967 case opc_anewarray: {
968 int type = readIntArg(byteCodes, i);
970 String typeName = jc.getClassName(type);
971 if (typeName.startsWith("[")) {
972 typeName = "[" + typeName;
974 typeName = "[L" + typeName + ";";
976 emit(out, "var @2 = Array.prototype.newArray__Ljava_lang_Object_2ZLjava_lang_String_2I(false, '@3', @1);",
977 smapper.popI(), smapper.pushA(), typeName);
980 case opc_multianewarray: {
981 int type = readIntArg(byteCodes, i);
983 String typeName = jc.getClassName(type);
984 int dim = readUByte(byteCodes, ++i);
985 StringBuilder dims = new StringBuilder();
987 for (int d = 0; d < dim; d++) {
991 dims.append(smapper.popI());
994 emit(out, "var @2 = Array.prototype.multiNewArray__Ljava_lang_Object_2Ljava_lang_String_2_3II('@3', @1, 0);",
995 dims.toString(), smapper.pushA(), typeName);
998 case opc_arraylength:
999 emit(out, "var @2 = @1.length;",
1000 smapper.popA(), smapper.pushI());
1003 emit(out, "@3.at(@2, @1);",
1004 smapper.popL(), smapper.popI(), smapper.popA());
1007 emit(out, "@3.at(@2, @1);",
1008 smapper.popF(), smapper.popI(), smapper.popA());
1011 emit(out, "@3.at(@2, @1);",
1012 smapper.popD(), smapper.popI(), smapper.popA());
1015 emit(out, "@3.at(@2, @1);",
1016 smapper.popA(), smapper.popI(), smapper.popA());
1022 emit(out, "@3.at(@2, @1);",
1023 smapper.popI(), smapper.popI(), smapper.popA());
1026 emit(out, "var @3 = @2.at(@1);",
1027 smapper.popI(), smapper.popA(), smapper.pushL());
1030 emit(out, "var @3 = @2.at(@1);",
1031 smapper.popI(), smapper.popA(), smapper.pushF());
1034 emit(out, "var @3 = @2.at(@1);",
1035 smapper.popI(), smapper.popA(), smapper.pushD());
1038 emit(out, "var @3 = @2.at(@1);",
1039 smapper.popI(), smapper.popA(), smapper.pushA());
1045 emit(out, "var @3 = @2.at(@1);",
1046 smapper.popI(), smapper.popA(), smapper.pushI());
1054 final Variable v = smapper.get(0);
1055 emit(out, "var @1 = @2;", smapper.pushT(v.getType()), v);
1059 final Variable vi1 = smapper.get(0);
1061 if (vi1.isCategory2()) {
1062 emit(out, "var @1 = @2;",
1063 smapper.pushT(vi1.getType()), vi1);
1065 final Variable vi2 = smapper.get(1);
1066 emit(out, "var @1 = @2, @3 = @4;",
1067 smapper.pushT(vi2.getType()), vi2,
1068 smapper.pushT(vi1.getType()), vi1);
1073 final Variable vi1 = smapper.pop();
1074 final Variable vi2 = smapper.pop();
1075 final Variable vo3 = smapper.pushT(vi1.getType());
1076 final Variable vo2 = smapper.pushT(vi2.getType());
1077 final Variable vo1 = smapper.pushT(vi1.getType());
1079 emit(out, "var @1 = @2, @3 = @4, @5 = @6;",
1080 vo1, vi1, vo2, vi2, vo3, vo1);
1084 final Variable vi1 = smapper.pop();
1085 final Variable vi2 = smapper.pop();
1087 if (vi1.isCategory2()) {
1088 final Variable vo3 = smapper.pushT(vi1.getType());
1089 final Variable vo2 = smapper.pushT(vi2.getType());
1090 final Variable vo1 = smapper.pushT(vi1.getType());
1092 emit(out, "var @1 = @2, @3 = @4, @5 = @6;",
1093 vo1, vi1, vo2, vi2, vo3, vo1);
1095 final Variable vi3 = smapper.pop();
1096 final Variable vo5 = smapper.pushT(vi2.getType());
1097 final Variable vo4 = smapper.pushT(vi1.getType());
1098 final Variable vo3 = smapper.pushT(vi3.getType());
1099 final Variable vo2 = smapper.pushT(vi2.getType());
1100 final Variable vo1 = smapper.pushT(vi1.getType());
1102 emit(out, "var @1 = @2, @3 = @4, @5 = @6,",
1103 vo1, vi1, vo2, vi2, vo3, vi3);
1104 emit(out, " @1 = @2, @3 = @4;",
1105 vo4, vo1, vo5, vo2);
1110 final Variable vi1 = smapper.pop();
1111 final Variable vi2 = smapper.pop();
1113 if (vi2.isCategory2()) {
1114 final Variable vo3 = smapper.pushT(vi1.getType());
1115 final Variable vo2 = smapper.pushT(vi2.getType());
1116 final Variable vo1 = smapper.pushT(vi1.getType());
1118 emit(out, "var @1 = @2, @3 = @4, @5 = @6;",
1119 vo1, vi1, vo2, vi2, vo3, vo1);
1121 final Variable vi3 = smapper.pop();
1122 final Variable vo4 = smapper.pushT(vi1.getType());
1123 final Variable vo3 = smapper.pushT(vi3.getType());
1124 final Variable vo2 = smapper.pushT(vi2.getType());
1125 final Variable vo1 = smapper.pushT(vi1.getType());
1127 emit(out, "var @1 = @2, @3 = @4, @5 = @6, @7 = @8;",
1128 vo1, vi1, vo2, vi2, vo3, vi3, vo4, vo1);
1133 final Variable vi1 = smapper.pop();
1134 final Variable vi2 = smapper.pop();
1136 if (vi1.isCategory2()) {
1137 if (vi2.isCategory2()) {
1138 final Variable vo3 = smapper.pushT(vi1.getType());
1139 final Variable vo2 = smapper.pushT(vi2.getType());
1140 final Variable vo1 = smapper.pushT(vi1.getType());
1142 emit(out, "var @1 = @2, @3 = @4, @5 = @6;",
1143 vo1, vi1, vo2, vi2, vo3, vo1);
1145 final Variable vi3 = smapper.pop();
1146 final Variable vo4 = smapper.pushT(vi1.getType());
1147 final Variable vo3 = smapper.pushT(vi3.getType());
1148 final Variable vo2 = smapper.pushT(vi2.getType());
1149 final Variable vo1 = smapper.pushT(vi1.getType());
1151 emit(out, "var @1 = @2, @3 = @4, @5 = @6, @7 = @8;",
1152 vo1, vi1, vo2, vi2, vo3, vi3, vo4, vo1);
1155 final Variable vi3 = smapper.pop();
1157 if (vi3.isCategory2()) {
1158 final Variable vo5 = smapper.pushT(vi2.getType());
1159 final Variable vo4 = smapper.pushT(vi1.getType());
1160 final Variable vo3 = smapper.pushT(vi3.getType());
1161 final Variable vo2 = smapper.pushT(vi2.getType());
1162 final Variable vo1 = smapper.pushT(vi1.getType());
1164 emit(out, "var @1 = @2, @3 = @4, @5 = @6,",
1165 vo1, vi1, vo2, vi2, vo3, vi3);
1166 emit(out, " @1 = @2, @3 = @4;",
1167 vo4, vo1, vo5, vo2);
1169 final Variable vi4 = smapper.pop();
1170 final Variable vo6 = smapper.pushT(vi2.getType());
1171 final Variable vo5 = smapper.pushT(vi1.getType());
1172 final Variable vo4 = smapper.pushT(vi4.getType());
1173 final Variable vo3 = smapper.pushT(vi3.getType());
1174 final Variable vo2 = smapper.pushT(vi2.getType());
1175 final Variable vo1 = smapper.pushT(vi1.getType());
1177 emit(out, "var @1 = @2, @3 = @4, @5 = @6, @7 = @8,",
1178 vo1, vi1, vo2, vi2, vo3, vi3, vo4, vi4);
1179 emit(out, " @1 = @2, @3 = @4;",
1180 vo5, vo1, vo6, vo2);
1186 final Variable vi1 = smapper.get(0);
1187 final Variable vi2 = smapper.get(1);
1189 if (vi1.getType() == vi2.getType()) {
1190 final Variable tmp = smapper.pushT(vi1.getType());
1192 emit(out, "var @1 = @2, @2 = @3, @3 = @1;",
1197 smapper.pushT(vi1.getType());
1198 smapper.pushT(vi2.getType());
1203 emit(out, "var @1 = @2;",
1204 smapper.pushI(), Integer.toString(byteCodes[++i]));
1207 emit(out, "var @1 = @2;",
1209 Integer.toString(readIntArg(byteCodes, i)));
1212 case opc_getfield: {
1213 int indx = readIntArg(byteCodes, i);
1214 String[] fi = jc.getFieldInfoName(indx);
1215 final int type = VarType.fromFieldType(fi[2].charAt(0));
1216 final String mangleClass = mangleSig(fi[0]);
1217 final String mangleClassAccess = accessClass(mangleClass);
1218 emit(out, "var @2 = @4(false)._@3.call(@1);",
1220 smapper.pushT(type), fi[1], mangleClassAccess
1225 case opc_putfield: {
1226 int indx = readIntArg(byteCodes, i);
1227 String[] fi = jc.getFieldInfoName(indx);
1228 final int type = VarType.fromFieldType(fi[2].charAt(0));
1229 final String mangleClass = mangleSig(fi[0]);
1230 final String mangleClassAccess = accessClass(mangleClass);
1231 emit(out, "@4(false)._@3.call(@2, @1);",
1233 smapper.popA(), fi[1],
1239 case opc_getstatic: {
1240 int indx = readIntArg(byteCodes, i);
1241 String[] fi = jc.getFieldInfoName(indx);
1242 final int type = VarType.fromFieldType(fi[2].charAt(0));
1243 emit(out, "var @1 = @2(false).constructor.@3;",
1244 smapper.pushT(type),
1245 accessClass(fi[0].replace('/', '_')), fi[1]);
1247 addReference(fi[0]);
1250 case opc_putstatic: {
1251 int indx = readIntArg(byteCodes, i);
1252 String[] fi = jc.getFieldInfoName(indx);
1253 final int type = VarType.fromFieldType(fi[2].charAt(0));
1254 emit(out, "@1(false).constructor.@2 = @3;",
1255 accessClass(fi[0].replace('/', '_')), fi[1],
1256 smapper.popT(type));
1258 addReference(fi[0]);
1261 case opc_checkcast: {
1262 int indx = readIntArg(byteCodes, i);
1263 final String type = jc.getClassName(indx);
1264 if (!type.startsWith("[")) {
1266 "if (@1 !== null && !@1.$instOf_@2) throw {};",
1267 smapper.getA(0), type.replace('/', '_'));
1269 emit(out, "vm.java_lang_Class(false).forName__Ljava_lang_Class_2Ljava_lang_String_2('@2').cast__Ljava_lang_Object_2Ljava_lang_Object_2(@1);",
1270 smapper.getA(0), type
1276 case opc_instanceof: {
1277 int indx = readIntArg(byteCodes, i);
1278 final String type = jc.getClassName(indx);
1279 if (!type.startsWith("[")) {
1280 emit(out, "var @2 = @1.$instOf_@3 ? 1 : 0;",
1281 smapper.popA(), smapper.pushI(),
1282 type.replace('/', '_'));
1284 emit(out, "var @2 = vm.java_lang_Class(false).forName__Ljava_lang_Class_2Ljava_lang_String_2('@3').isInstance__ZLjava_lang_Object_2(@1);",
1285 smapper.popA(), smapper.pushI(),
1293 final Variable v = smapper.popA();
1296 emit(out, "{ var @1 = @2; throw @2; }",
1297 smapper.pushA(), v);
1301 case opc_monitorenter: {
1302 out.append("/* monitor enter */");
1307 case opc_monitorexit: {
1308 out.append("/* monitor exit */");
1319 emit(out, "throw 'unknown bytecode @1';",
1320 Integer.toString(c));
1324 for (int j = prev; j <= i; j++) {
1326 final int cc = readUByte(byteCodes, j);
1327 out.append(Integer.toString(cc));
1332 if (previousTrap != null) {
1333 generateCatch(previousTrap);
1339 private int generateIf(byte[] byteCodes, int i,
1340 final Variable v2, final Variable v1,
1341 final String test) throws IOException {
1342 int indx = i + readIntArg(byteCodes, i);
1343 out.append("if (").append(v1)
1344 .append(' ').append(test).append(' ')
1345 .append(v2).append(") { gt = " + indx)
1346 .append("; continue; }");
1350 private int readIntArg(byte[] byteCodes, int offsetInstruction) {
1351 final int indxHi = byteCodes[offsetInstruction + 1] << 8;
1352 final int indxLo = byteCodes[offsetInstruction + 2];
1353 return (indxHi & 0xffffff00) | (indxLo & 0xff);
1355 private int readInt4(byte[] byteCodes, int offsetInstruction) {
1356 final int d = byteCodes[offsetInstruction + 0] << 24;
1357 final int c = byteCodes[offsetInstruction + 1] << 16;
1358 final int b = byteCodes[offsetInstruction + 2] << 8;
1359 final int a = byteCodes[offsetInstruction + 3];
1360 return (d & 0xff000000) | (c & 0xff0000) | (b & 0xff00) | (a & 0xff);
1362 private int readUByte(byte[] byteCodes, int offsetInstruction) {
1363 return byteCodes[offsetInstruction] & 0xff;
1366 private int readUShort(byte[] byteCodes, int offsetInstruction) {
1367 return ((byteCodes[offsetInstruction] & 0xff) << 8)
1368 | (byteCodes[offsetInstruction + 1] & 0xff);
1371 private static void countArgs(String descriptor, char[] returnType, StringBuilder sig, StringBuilder cnt) {
1373 Boolean count = null;
1374 boolean array = false;
1376 int firstPos = sig.length();
1377 while (i < descriptor.length()) {
1378 char ch = descriptor.charAt(i++);
1399 if (ch == 'J' || ch == 'D') {
1405 sig.insert(firstPos, ch);
1407 returnType[0] = '[';
1408 sig.insert(firstPos, "_3");
1417 returnType[0] = 'V';
1418 sig.insert(firstPos, 'V');
1421 int next = descriptor.indexOf(';', i);
1422 String realSig = mangleSig(descriptor, i - 1, next + 1);
1427 sig.append(realSig);
1430 sig.insert(firstPos, realSig);
1432 sig.insert(firstPos, "_3");
1434 returnType[0] = 'L';
1443 throw new IllegalStateException("Invalid char: " + ch);
1448 static String mangleSig(String sig) {
1449 return mangleSig(sig, 0, sig.length());
1452 private static String mangleSig(String txt, int first, int last) {
1453 StringBuilder sb = new StringBuilder();
1454 for (int i = first; i < last; i++) {
1455 final char ch = txt.charAt(i);
1457 case '/': sb.append('_'); break;
1458 case '_': sb.append("_1"); break;
1459 case ';': sb.append("_2"); break;
1460 case '[': sb.append("_3"); break;
1461 default: sb.append(ch); break;
1464 return sb.toString();
1467 private static String findMethodName(MethodData m, StringBuilder cnt) {
1468 StringBuilder name = new StringBuilder();
1469 if ("<init>".equals(m.getName())) { // NOI18N
1470 name.append("cons"); // NOI18N
1471 } else if ("<clinit>".equals(m.getName())) { // NOI18N
1472 name.append("class"); // NOI18N
1474 name.append(m.getName());
1477 countArgs(m.getInternalSig(), new char[1], name, cnt);
1478 return name.toString();
1481 static String findMethodName(String[] mi, StringBuilder cnt, char[] returnType) {
1482 StringBuilder name = new StringBuilder();
1483 String descr = mi[2];//mi.getDescriptor();
1485 if ("<init>".equals(nm)) { // NOI18N
1486 name.append("cons"); // NOI18N
1490 countArgs(descr, returnType, name, cnt);
1491 return name.toString();
1494 private int invokeStaticMethod(byte[] byteCodes, int i, final StackMapper mapper, boolean isStatic)
1495 throws IOException {
1496 int methodIndex = readIntArg(byteCodes, i);
1497 String[] mi = jc.getFieldInfoName(methodIndex);
1498 char[] returnType = { 'V' };
1499 StringBuilder cnt = new StringBuilder();
1500 String mn = findMethodName(mi, cnt, returnType);
1502 final int numArguments = isStatic ? cnt.length() : cnt.length() + 1;
1503 final Variable[] vars = new Variable[numArguments];
1505 for (int j = numArguments - 1; j >= 0; --j) {
1506 vars[j] = mapper.pop();
1509 if (returnType[0] != 'V') {
1511 .append(mapper.pushT(VarType.fromFieldType(returnType[0])))
1515 final String in = mi[0];
1516 out.append(accessClass(in.replace('/', '_')));
1517 out.append("(false).");
1518 if (mn.startsWith("cons_")) {
1519 out.append("constructor.");
1525 out.append(".call(");
1527 if (numArguments > 0) {
1528 out.append(vars[0]);
1529 for (int j = 1; j < numArguments; ++j) {
1531 out.append(vars[j]);
1539 private int invokeVirtualMethod(byte[] byteCodes, int i, final StackMapper mapper)
1540 throws IOException {
1541 int methodIndex = readIntArg(byteCodes, i);
1542 String[] mi = jc.getFieldInfoName(methodIndex);
1543 char[] returnType = { 'V' };
1544 StringBuilder cnt = new StringBuilder();
1545 String mn = findMethodName(mi, cnt, returnType);
1547 final int numArguments = cnt.length() + 1;
1548 final Variable[] vars = new Variable[numArguments];
1550 for (int j = numArguments - 1; j >= 0; --j) {
1551 vars[j] = mapper.pop();
1554 if (returnType[0] != 'V') {
1556 .append(mapper.pushT(VarType.fromFieldType(returnType[0])))
1560 out.append(vars[0]).append('.');
1564 for (int j = 1; j < numArguments; ++j) {
1566 out.append(vars[j]);
1574 private void addReference(String cn) throws IOException {
1575 if (requireReference(cn)) {
1576 debug(" /* needs " + cn + " */");
1580 private void outType(String d, StringBuilder out) {
1582 while (d.charAt(0) == '[') {
1586 if (d.charAt(0) == 'L') {
1587 assert d.charAt(d.length() - 1) == ';';
1588 out.append(d.replace('/', '_').substring(0, d.length() - 1));
1594 private String encodeConstant(int entryIndex) throws IOException {
1595 String[] classRef = { null };
1596 String s = jc.stringValue(entryIndex, classRef);
1597 if (classRef[0] != null) {
1598 if (classRef[0].startsWith("[")) {
1599 s = accessClass("java_lang_Class") + "(false).forName__Ljava_lang_Class_2Ljava_lang_String_2('" + classRef[0] + "');";
1601 addReference(classRef[0]);
1602 s = accessClass(s.replace('/', '_')) + "(false).constructor.$class";
1608 private String javaScriptBody(String prefix, MethodData m, boolean isStatic) throws IOException {
1609 byte[] arr = m.findAnnotationData(true);
1613 final String jvmType = "Lorg/apidesign/bck2brwsr/core/JavaScriptBody;";
1614 class P extends AnnotationParser {
1620 String[] args = new String[30];
1624 protected void visitAttr(String type, String attr, String at, String value) {
1625 if (type.equals(jvmType)) {
1626 if ("body".equals(attr)) {
1628 } else if ("args".equals(attr)) {
1629 args[cnt++] = value;
1631 throw new IllegalArgumentException(attr);
1638 if (p.body == null) {
1641 StringBuilder cnt = new StringBuilder();
1642 final String mn = findMethodName(m, cnt);
1643 out.append(prefix).append(mn);
1644 out.append(" = function(");
1647 for (int i = 0; i < cnt.length(); i++) {
1649 space = outputArg(out, p.args, index);
1652 out.append(") {").append("\n");
1654 out.append("\n}\n");
1657 private static String className(ClassData jc) {
1658 //return jc.getName().getInternalName().replace('/', '_');
1659 return jc.getClassName().replace('/', '_');
1662 private static String[] findAnnotation(
1663 byte[] arr, ClassData cd, final String className,
1664 final String... attrNames
1665 ) throws IOException {
1669 final String[] values = new String[attrNames.length];
1670 final boolean[] found = { false };
1671 final String jvmType = "L" + className.replace('.', '/') + ";";
1672 AnnotationParser ap = new AnnotationParser(false) {
1674 protected void visitAttr(String type, String attr, String at, String value) {
1675 if (type.equals(jvmType)) {
1677 for (int i = 0; i < attrNames.length; i++) {
1678 if (attrNames[i].equals(attr)) {
1687 return found[0] ? values : null;
1690 private CharSequence initField(FieldData v) {
1691 final String is = v.getInternalSig();
1692 if (is.length() == 1) {
1693 switch (is.charAt(0)) {
1699 case 'I': return " = 0;";
1701 case 'D': return " = 0.0;";
1703 throw new IllegalStateException(is);
1709 private static void generateAnno(ClassData cd, final Appendable out, byte[] data) throws IOException {
1710 AnnotationParser ap = new AnnotationParser(true) {
1715 protected void visitAnnotationStart(String type) throws IOException {
1719 out.append('"').append(type).append("\" : {\n");
1724 protected void visitAnnotationEnd(String type) throws IOException {
1725 out.append("\n}\n");
1729 protected void visitAttr(String type, String attr, String attrType, String value)
1730 throws IOException {
1737 out.append(attr).append("__").append(attrType).append(" : ").append(value);
1743 private static String outputArg(Appendable out, String[] args, int indx) throws IOException {
1744 final String name = args[indx];
1748 if (name.contains(",")) {
1749 throw new IOException("Wrong parameter with ',': " + name);
1755 private static void emit(final Appendable out,
1756 final String format,
1757 final CharSequence... params) throws IOException {
1758 final int length = format.length();
1761 int paramOffset = format.indexOf('@');
1762 while ((paramOffset != -1) && (paramOffset < (length - 1))) {
1763 final char paramChar = format.charAt(paramOffset + 1);
1764 if ((paramChar >= '1') && (paramChar <= '9')) {
1765 final int paramIndex = paramChar - '0' - 1;
1767 out.append(format, processed, paramOffset);
1768 out.append(params[paramIndex]);
1771 processed = paramOffset + 1;
1774 paramOffset = format.indexOf('@', paramOffset + 1);
1777 out.append(format, processed, length);
1780 private void generateCatch(TrapData[] traps) throws IOException {
1781 out.append("} catch (e) {\n");
1783 for (TrapData e : traps) {
1787 if (e.catch_cpx != 0) { //not finally
1788 final String classInternalName = jc.getClassName(e.catch_cpx);
1789 addReference(classInternalName);
1790 if ("java/lang/Throwable".equals(classInternalName)) {
1791 out.append("if (e.$instOf_java_lang_Throwable) {");
1792 out.append(" var stA0 = e;");
1793 out.append("} else {");
1794 out.append(" var stA0 = vm.java_lang_Throwable(true);");
1795 out.append(" vm.java_lang_Throwable.cons__VLjava_lang_String_2.call(stA0, e.toString());");
1797 out.append("gt=" + e.handler_pc + "; continue;");
1799 out.append("if (e.$instOf_" + classInternalName.replace('/', '_') + ") {");
1800 out.append("gt=" + e.handler_pc + "; var stA0 = e; continue;");
1804 finallyPC = e.handler_pc;
1807 if (finallyPC == -1) {
1808 out.append("throw e;");
1810 out.append("gt=" + finallyPC + "; var stA0 = e; continue;");