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 = @1.mod64(@2);",
574 smapper.getL(1), smapper.popL());
577 emit(out, "@1 %= @2;", smapper.getF(1), smapper.popF());
580 emit(out, "@1 %= @2;", smapper.getD(1), smapper.popD());
583 emit(out, "@1 &= @2;", smapper.getI(1), smapper.popI());
586 emit(out, "@1 = @1.and64(@2);", smapper.getL(1), smapper.popL());
589 emit(out, "@1 |= @2;", smapper.getI(1), smapper.popI());
592 emit(out, "@1 = @1.or64(@2);", smapper.getL(1), smapper.popL());
595 emit(out, "@1 ^= @2;", smapper.getI(1), smapper.popI());
598 emit(out, "@1 = @1.xor64(@2);", smapper.getL(1), smapper.popL());
601 emit(out, "@1 = @1.neg32();", smapper.getI(0));
604 emit(out, "@1 = @1.neg64();", smapper.getL(0));
607 emit(out, "@1 = -@1;", smapper.getF(0));
610 emit(out, "@1 = -@1;", smapper.getD(0));
613 emit(out, "@1 <<= @2;", smapper.getI(1), smapper.popI());
616 emit(out, "@1 = @1.shl64(@2);", smapper.getL(1), smapper.popI());
619 emit(out, "@1 >>= @2;", smapper.getI(1), smapper.popI());
622 emit(out, "@1 = @1.shr64(@2);", smapper.getL(1), smapper.popI());
625 emit(out, "@1 >>>= @2;", smapper.getI(1), smapper.popI());
628 emit(out, "@1 = @1.ushr64(@2);", smapper.getL(1), smapper.popI());
632 final int varIndx = wide ? readUShort(byteCodes, i++)
633 : readUByte(byteCodes, i);
635 final int incrBy = wide ? readShort(byteCodes, i++)
639 emit(out, "@1++;", lmapper.getI(varIndx));
641 emit(out, "@1 += @2;",
642 lmapper.getI(varIndx),
643 Integer.toString(incrBy));
648 emit(out, "return;");
651 emit(out, "return @1;", smapper.popI());
654 emit(out, "return @1;", smapper.popL());
657 emit(out, "return @1;", smapper.popF());
660 emit(out, "return @1;", smapper.popD());
663 emit(out, "return @1;", smapper.popA());
666 emit(out, "var @2 = @1;", smapper.popI(), smapper.pushL());
669 emit(out, "var @2 = @1;", smapper.popI(), smapper.pushF());
672 emit(out, "var @2 = @1;", smapper.popI(), smapper.pushD());
675 emit(out, "var @2 = @1.toInt32();", smapper.popL(), smapper.pushI());
679 emit(out, "var @2 = @1.toFP();", smapper.popL(), smapper.pushF());
682 emit(out, "var @2 = @1.toFP();", smapper.popL(), smapper.pushD());
685 emit(out, "var @2 = @1;", smapper.popF(), smapper.pushD());
688 emit(out, "var @2 = @1;", smapper.popD(), smapper.pushF());
691 emit(out, "var @2 = Math.floor(@1);",
692 smapper.popF(), smapper.pushI());
695 emit(out, "var @2 = Math.floor(@1).toLong();",
696 smapper.popF(), smapper.pushL());
699 emit(out, "var @2 = Math.floor(@1);",
700 smapper.popD(), smapper.pushI());
703 emit(out, "var @2 = Math.floor(@1).toLong();",
704 smapper.popD(), smapper.pushL());
707 emit(out, "var @1 = @1.toInt8();", smapper.getI(0));
710 out.append("{ /* number conversion */ }");
713 emit(out, "var @1 = @1.toInt16();", smapper.getI(0));
715 case opc_aconst_null:
716 emit(out, "var @1 = null;", smapper.pushA());
719 emit(out, "var @1 = -1;", smapper.pushI());
722 emit(out, "var @1 = 0;", smapper.pushI());
725 emit(out, "var @1 = 0;", smapper.pushD());
728 emit(out, "var @1 = 0;", smapper.pushL());
731 emit(out, "var @1 = 0;", smapper.pushF());
734 emit(out, "var @1 = 1;", smapper.pushI());
737 emit(out, "var @1 = 1;", smapper.pushL());
740 emit(out, "var @1 = 1;", smapper.pushF());
743 emit(out, "var @1 = 1;", smapper.pushD());
746 emit(out, "var @1 = 2;", smapper.pushI());
749 emit(out, "var @1 = 2;", smapper.pushF());
752 emit(out, "var @1 = 3;", smapper.pushI());
755 emit(out, "var @1 = 4;", smapper.pushI());
758 emit(out, "var @1 = 5;", smapper.pushI());
761 int indx = readUByte(byteCodes, ++i);
762 String v = encodeConstant(indx);
763 int type = VarType.fromConstantType(jc.getTag(indx));
764 emit(out, "var @1 = @2;", smapper.pushT(type), v);
769 int indx = readIntArg(byteCodes, i);
771 String v = encodeConstant(indx);
772 int type = VarType.fromConstantType(jc.getTag(indx));
773 if (type == VarType.LONG) {
774 final Long lv = new Long(v);
775 final int low = (int)(lv.longValue() & 0xFFFFFFFF);
776 final int hi = (int)(lv.longValue() >> 32);
777 emit(out, "var @1 = 0x@3.next32(0x@2);", smapper.pushL(),
778 Integer.toHexString(low), Integer.toHexString(hi));
780 emit(out, "var @1 = @2;", smapper.pushT(type), v);
785 emit(out, "var @3 = @2.compare64(@1);",
786 smapper.popL(), smapper.popL(), smapper.pushI());
790 emit(out, "var @3 = (@2 == @1) ? 0 : ((@2 < @1) ? -1 : 1);",
791 smapper.popF(), smapper.popF(), smapper.pushI());
795 emit(out, "var @3 = (@2 == @1) ? 0 : ((@2 < @1) ? -1 : 1);",
796 smapper.popD(), smapper.popD(), smapper.pushI());
799 i = generateIf(byteCodes, i, smapper.popA(), smapper.popA(),
803 i = generateIf(byteCodes, i, smapper.popA(), smapper.popA(),
807 i = generateIf(byteCodes, i, smapper.popI(), smapper.popI(),
811 int indx = i + readIntArg(byteCodes, i);
812 emit(out, "if (@1 == 0) { gt = @2; continue; }",
813 smapper.popI(), Integer.toString(indx));
818 int indx = i + readIntArg(byteCodes, i);
819 emit(out, "if (@1 != 0) { gt = @2; continue; }",
820 smapper.popI(), Integer.toString(indx));
825 int indx = i + readIntArg(byteCodes, i);
826 emit(out, "if (@1 < 0) { gt = @2; continue; }",
827 smapper.popI(), Integer.toString(indx));
832 int indx = i + readIntArg(byteCodes, i);
833 emit(out, "if (@1 <= 0) { gt = @2; continue; }",
834 smapper.popI(), Integer.toString(indx));
839 int indx = i + readIntArg(byteCodes, i);
840 emit(out, "if (@1 > 0) { gt = @2; continue; }",
841 smapper.popI(), Integer.toString(indx));
846 int indx = i + readIntArg(byteCodes, i);
847 emit(out, "if (@1 >= 0) { gt = @2; continue; }",
848 smapper.popI(), Integer.toString(indx));
852 case opc_ifnonnull: {
853 int indx = i + readIntArg(byteCodes, i);
854 emit(out, "if (@1 !== null) { gt = @2; continue; }",
855 smapper.popA(), Integer.toString(indx));
860 int indx = i + readIntArg(byteCodes, i);
861 emit(out, "if (@1 === null) { gt = @2; continue; }",
862 smapper.popA(), Integer.toString(indx));
867 i = generateIf(byteCodes, i, smapper.popI(), smapper.popI(),
871 i = generateIf(byteCodes, i, smapper.popI(), smapper.popI(),
875 i = generateIf(byteCodes, i, smapper.popI(), smapper.popI(),
879 i = generateIf(byteCodes, i, smapper.popI(), smapper.popI(),
883 i = generateIf(byteCodes, i, smapper.popI(), smapper.popI(),
887 int indx = i + readIntArg(byteCodes, i);
888 emit(out, "gt = @1; continue;", Integer.toString(indx));
892 case opc_lookupswitch: {
893 int table = i / 4 * 4 + 4;
894 int dflt = i + readInt4(byteCodes, table);
896 int n = readInt4(byteCodes, table);
898 out.append("switch (").append(smapper.popI()).append(") {\n");
900 int cnstnt = readInt4(byteCodes, table);
902 int offset = i + readInt4(byteCodes, table);
904 out.append(" case " + cnstnt).append(": gt = " + offset).append("; continue;\n");
906 out.append(" default: gt = " + dflt).append("; continue;\n}");
910 case opc_tableswitch: {
911 int table = i / 4 * 4 + 4;
912 int dflt = i + readInt4(byteCodes, table);
914 int low = readInt4(byteCodes, table);
916 int high = readInt4(byteCodes, table);
918 out.append("switch (").append(smapper.popI()).append(") {\n");
919 while (low <= high) {
920 int offset = i + readInt4(byteCodes, table);
922 out.append(" case " + low).append(": gt = " + offset).append("; continue;\n");
925 out.append(" default: gt = " + dflt).append("; continue;\n}");
929 case opc_invokeinterface: {
930 i = invokeVirtualMethod(byteCodes, i, smapper) + 2;
933 case opc_invokevirtual:
934 i = invokeVirtualMethod(byteCodes, i, smapper);
936 case opc_invokespecial:
937 i = invokeStaticMethod(byteCodes, i, smapper, false);
939 case opc_invokestatic:
940 i = invokeStaticMethod(byteCodes, i, smapper, true);
943 int indx = readIntArg(byteCodes, i);
944 String ci = jc.getClassName(indx);
945 emit(out, "var @1 = new @2;",
946 smapper.pushA(), accessClass(ci.replace('/', '_')));
952 int atype = readUByte(byteCodes, ++i);
955 case 4: jvmType = "[Z"; break;
956 case 5: jvmType = "[C"; break;
957 case 6: jvmType = "[F"; break;
958 case 7: jvmType = "[D"; break;
959 case 8: jvmType = "[B"; break;
960 case 9: jvmType = "[S"; break;
961 case 10: jvmType = "[I"; break;
962 case 11: jvmType = "[J"; break;
963 default: throw new IllegalStateException("Array type: " + atype);
965 emit(out, "var @2 = Array.prototype.newArray__Ljava_lang_Object_2ZLjava_lang_String_2I(true, '@3', @1);",
966 smapper.popI(), smapper.pushA(), jvmType);
968 case opc_anewarray: {
969 int type = readIntArg(byteCodes, i);
971 String typeName = jc.getClassName(type);
972 if (typeName.startsWith("[")) {
973 typeName = "[" + typeName;
975 typeName = "[L" + typeName + ";";
977 emit(out, "var @2 = Array.prototype.newArray__Ljava_lang_Object_2ZLjava_lang_String_2I(false, '@3', @1);",
978 smapper.popI(), smapper.pushA(), typeName);
981 case opc_multianewarray: {
982 int type = readIntArg(byteCodes, i);
984 String typeName = jc.getClassName(type);
985 int dim = readUByte(byteCodes, ++i);
986 StringBuilder dims = new StringBuilder();
988 for (int d = 0; d < dim; d++) {
992 dims.append(smapper.popI());
995 emit(out, "var @2 = Array.prototype.multiNewArray__Ljava_lang_Object_2Ljava_lang_String_2_3II('@3', @1, 0);",
996 dims.toString(), smapper.pushA(), typeName);
999 case opc_arraylength:
1000 emit(out, "var @2 = @1.length;",
1001 smapper.popA(), smapper.pushI());
1004 emit(out, "@3.at(@2, @1);",
1005 smapper.popL(), smapper.popI(), smapper.popA());
1008 emit(out, "@3.at(@2, @1);",
1009 smapper.popF(), smapper.popI(), smapper.popA());
1012 emit(out, "@3.at(@2, @1);",
1013 smapper.popD(), smapper.popI(), smapper.popA());
1016 emit(out, "@3.at(@2, @1);",
1017 smapper.popA(), smapper.popI(), smapper.popA());
1023 emit(out, "@3.at(@2, @1);",
1024 smapper.popI(), smapper.popI(), smapper.popA());
1027 emit(out, "var @3 = @2.at(@1);",
1028 smapper.popI(), smapper.popA(), smapper.pushL());
1031 emit(out, "var @3 = @2.at(@1);",
1032 smapper.popI(), smapper.popA(), smapper.pushF());
1035 emit(out, "var @3 = @2.at(@1);",
1036 smapper.popI(), smapper.popA(), smapper.pushD());
1039 emit(out, "var @3 = @2.at(@1);",
1040 smapper.popI(), smapper.popA(), smapper.pushA());
1046 emit(out, "var @3 = @2.at(@1);",
1047 smapper.popI(), smapper.popA(), smapper.pushI());
1055 final Variable v = smapper.get(0);
1056 emit(out, "var @1 = @2;", smapper.pushT(v.getType()), v);
1060 final Variable vi1 = smapper.get(0);
1062 if (vi1.isCategory2()) {
1063 emit(out, "var @1 = @2;",
1064 smapper.pushT(vi1.getType()), vi1);
1066 final Variable vi2 = smapper.get(1);
1067 emit(out, "var @1 = @2, @3 = @4;",
1068 smapper.pushT(vi2.getType()), vi2,
1069 smapper.pushT(vi1.getType()), vi1);
1074 final Variable vi1 = smapper.pop();
1075 final Variable vi2 = smapper.pop();
1076 final Variable vo3 = smapper.pushT(vi1.getType());
1077 final Variable vo2 = smapper.pushT(vi2.getType());
1078 final Variable vo1 = smapper.pushT(vi1.getType());
1080 emit(out, "var @1 = @2, @3 = @4, @5 = @6;",
1081 vo1, vi1, vo2, vi2, vo3, vo1);
1085 final Variable vi1 = smapper.pop();
1086 final Variable vi2 = smapper.pop();
1088 if (vi1.isCategory2()) {
1089 final Variable vo3 = smapper.pushT(vi1.getType());
1090 final Variable vo2 = smapper.pushT(vi2.getType());
1091 final Variable vo1 = smapper.pushT(vi1.getType());
1093 emit(out, "var @1 = @2, @3 = @4, @5 = @6;",
1094 vo1, vi1, vo2, vi2, vo3, vo1);
1096 final Variable vi3 = smapper.pop();
1097 final Variable vo5 = smapper.pushT(vi2.getType());
1098 final Variable vo4 = smapper.pushT(vi1.getType());
1099 final Variable vo3 = smapper.pushT(vi3.getType());
1100 final Variable vo2 = smapper.pushT(vi2.getType());
1101 final Variable vo1 = smapper.pushT(vi1.getType());
1103 emit(out, "var @1 = @2, @3 = @4, @5 = @6,",
1104 vo1, vi1, vo2, vi2, vo3, vi3);
1105 emit(out, " @1 = @2, @3 = @4;",
1106 vo4, vo1, vo5, vo2);
1111 final Variable vi1 = smapper.pop();
1112 final Variable vi2 = smapper.pop();
1114 if (vi2.isCategory2()) {
1115 final Variable vo3 = smapper.pushT(vi1.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;",
1120 vo1, vi1, vo2, vi2, vo3, vo1);
1122 final Variable vi3 = smapper.pop();
1123 final Variable vo4 = smapper.pushT(vi1.getType());
1124 final Variable vo3 = smapper.pushT(vi3.getType());
1125 final Variable vo2 = smapper.pushT(vi2.getType());
1126 final Variable vo1 = smapper.pushT(vi1.getType());
1128 emit(out, "var @1 = @2, @3 = @4, @5 = @6, @7 = @8;",
1129 vo1, vi1, vo2, vi2, vo3, vi3, vo4, vo1);
1134 final Variable vi1 = smapper.pop();
1135 final Variable vi2 = smapper.pop();
1137 if (vi1.isCategory2()) {
1138 if (vi2.isCategory2()) {
1139 final Variable vo3 = smapper.pushT(vi1.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;",
1144 vo1, vi1, vo2, vi2, vo3, vo1);
1146 final Variable vi3 = smapper.pop();
1147 final Variable vo4 = smapper.pushT(vi1.getType());
1148 final Variable vo3 = smapper.pushT(vi3.getType());
1149 final Variable vo2 = smapper.pushT(vi2.getType());
1150 final Variable vo1 = smapper.pushT(vi1.getType());
1152 emit(out, "var @1 = @2, @3 = @4, @5 = @6, @7 = @8;",
1153 vo1, vi1, vo2, vi2, vo3, vi3, vo4, vo1);
1156 final Variable vi3 = smapper.pop();
1158 if (vi3.isCategory2()) {
1159 final Variable vo5 = smapper.pushT(vi2.getType());
1160 final Variable vo4 = smapper.pushT(vi1.getType());
1161 final Variable vo3 = smapper.pushT(vi3.getType());
1162 final Variable vo2 = smapper.pushT(vi2.getType());
1163 final Variable vo1 = smapper.pushT(vi1.getType());
1165 emit(out, "var @1 = @2, @3 = @4, @5 = @6,",
1166 vo1, vi1, vo2, vi2, vo3, vi3);
1167 emit(out, " @1 = @2, @3 = @4;",
1168 vo4, vo1, vo5, vo2);
1170 final Variable vi4 = smapper.pop();
1171 final Variable vo6 = smapper.pushT(vi2.getType());
1172 final Variable vo5 = smapper.pushT(vi1.getType());
1173 final Variable vo4 = smapper.pushT(vi4.getType());
1174 final Variable vo3 = smapper.pushT(vi3.getType());
1175 final Variable vo2 = smapper.pushT(vi2.getType());
1176 final Variable vo1 = smapper.pushT(vi1.getType());
1178 emit(out, "var @1 = @2, @3 = @4, @5 = @6, @7 = @8,",
1179 vo1, vi1, vo2, vi2, vo3, vi3, vo4, vi4);
1180 emit(out, " @1 = @2, @3 = @4;",
1181 vo5, vo1, vo6, vo2);
1187 final Variable vi1 = smapper.get(0);
1188 final Variable vi2 = smapper.get(1);
1190 if (vi1.getType() == vi2.getType()) {
1191 final Variable tmp = smapper.pushT(vi1.getType());
1193 emit(out, "var @1 = @2, @2 = @3, @3 = @1;",
1198 smapper.pushT(vi1.getType());
1199 smapper.pushT(vi2.getType());
1204 emit(out, "var @1 = @2;",
1205 smapper.pushI(), Integer.toString(byteCodes[++i]));
1208 emit(out, "var @1 = @2;",
1210 Integer.toString(readIntArg(byteCodes, i)));
1213 case opc_getfield: {
1214 int indx = readIntArg(byteCodes, i);
1215 String[] fi = jc.getFieldInfoName(indx);
1216 final int type = VarType.fromFieldType(fi[2].charAt(0));
1217 final String mangleClass = mangleSig(fi[0]);
1218 final String mangleClassAccess = accessClass(mangleClass);
1219 emit(out, "var @2 = @4(false)._@3.call(@1);",
1221 smapper.pushT(type), fi[1], mangleClassAccess
1226 case opc_putfield: {
1227 int indx = readIntArg(byteCodes, i);
1228 String[] fi = jc.getFieldInfoName(indx);
1229 final int type = VarType.fromFieldType(fi[2].charAt(0));
1230 final String mangleClass = mangleSig(fi[0]);
1231 final String mangleClassAccess = accessClass(mangleClass);
1232 emit(out, "@4(false)._@3.call(@2, @1);",
1234 smapper.popA(), fi[1],
1240 case opc_getstatic: {
1241 int indx = readIntArg(byteCodes, i);
1242 String[] fi = jc.getFieldInfoName(indx);
1243 final int type = VarType.fromFieldType(fi[2].charAt(0));
1244 emit(out, "var @1 = @2(false).constructor.@3;",
1245 smapper.pushT(type),
1246 accessClass(fi[0].replace('/', '_')), fi[1]);
1248 addReference(fi[0]);
1251 case opc_putstatic: {
1252 int indx = readIntArg(byteCodes, i);
1253 String[] fi = jc.getFieldInfoName(indx);
1254 final int type = VarType.fromFieldType(fi[2].charAt(0));
1255 emit(out, "@1(false).constructor.@2 = @3;",
1256 accessClass(fi[0].replace('/', '_')), fi[1],
1257 smapper.popT(type));
1259 addReference(fi[0]);
1262 case opc_checkcast: {
1263 int indx = readIntArg(byteCodes, i);
1264 final String type = jc.getClassName(indx);
1265 if (!type.startsWith("[")) {
1267 "if (@1 !== null && !@1.$instOf_@2) throw {};",
1268 smapper.getA(0), type.replace('/', '_'));
1270 emit(out, "vm.java_lang_Class(false).forName__Ljava_lang_Class_2Ljava_lang_String_2('@2').cast__Ljava_lang_Object_2Ljava_lang_Object_2(@1);",
1271 smapper.getA(0), type
1277 case opc_instanceof: {
1278 int indx = readIntArg(byteCodes, i);
1279 final String type = jc.getClassName(indx);
1280 if (!type.startsWith("[")) {
1281 emit(out, "var @2 = @1 != null && @1.$instOf_@3 ? 1 : 0;",
1282 smapper.popA(), smapper.pushI(),
1283 type.replace('/', '_'));
1285 emit(out, "var @2 = vm.java_lang_Class(false).forName__Ljava_lang_Class_2Ljava_lang_String_2('@3').isInstance__ZLjava_lang_Object_2(@1);",
1286 smapper.popA(), smapper.pushI(),
1294 final Variable v = smapper.popA();
1297 emit(out, "{ var @1 = @2; throw @2; }",
1298 smapper.pushA(), v);
1302 case opc_monitorenter: {
1303 out.append("/* monitor enter */");
1308 case opc_monitorexit: {
1309 out.append("/* monitor exit */");
1320 emit(out, "throw 'unknown bytecode @1';",
1321 Integer.toString(c));
1325 for (int j = prev; j <= i; j++) {
1327 final int cc = readUByte(byteCodes, j);
1328 out.append(Integer.toString(cc));
1333 if (previousTrap != null) {
1334 generateCatch(previousTrap);
1340 private int generateIf(byte[] byteCodes, int i,
1341 final Variable v2, final Variable v1,
1342 final String test) throws IOException {
1343 int indx = i + readIntArg(byteCodes, i);
1344 out.append("if (").append(v1)
1345 .append(' ').append(test).append(' ')
1346 .append(v2).append(") { gt = " + indx)
1347 .append("; continue; }");
1351 private int readIntArg(byte[] byteCodes, int offsetInstruction) {
1352 final int indxHi = byteCodes[offsetInstruction + 1] << 8;
1353 final int indxLo = byteCodes[offsetInstruction + 2];
1354 return (indxHi & 0xffffff00) | (indxLo & 0xff);
1356 private int readInt4(byte[] byteCodes, int offset) {
1357 final int d = byteCodes[offset + 0] << 24;
1358 final int c = byteCodes[offset + 1] << 16;
1359 final int b = byteCodes[offset + 2] << 8;
1360 final int a = byteCodes[offset + 3];
1361 return (d & 0xff000000) | (c & 0xff0000) | (b & 0xff00) | (a & 0xff);
1363 private int readUByte(byte[] byteCodes, int offset) {
1364 return byteCodes[offset] & 0xff;
1367 private int readUShort(byte[] byteCodes, int offset) {
1368 return ((byteCodes[offset] & 0xff) << 8)
1369 | (byteCodes[offset + 1] & 0xff);
1372 private int readShort(byte[] byteCodes, int offset) {
1373 return (byteCodes[offset] << 8)
1374 | (byteCodes[offset + 1] & 0xff);
1377 private static void countArgs(String descriptor, char[] returnType, StringBuilder sig, StringBuilder cnt) {
1379 Boolean count = null;
1380 boolean array = false;
1382 int firstPos = sig.length();
1383 while (i < descriptor.length()) {
1384 char ch = descriptor.charAt(i++);
1405 if (ch == 'J' || ch == 'D') {
1411 sig.insert(firstPos, ch);
1413 returnType[0] = '[';
1414 sig.insert(firstPos, "_3");
1423 returnType[0] = 'V';
1424 sig.insert(firstPos, 'V');
1427 int next = descriptor.indexOf(';', i);
1428 String realSig = mangleSig(descriptor, i - 1, next + 1);
1433 sig.append(realSig);
1436 sig.insert(firstPos, realSig);
1438 sig.insert(firstPos, "_3");
1440 returnType[0] = 'L';
1449 throw new IllegalStateException("Invalid char: " + ch);
1454 static String mangleSig(String sig) {
1455 return mangleSig(sig, 0, sig.length());
1458 private static String mangleSig(String txt, int first, int last) {
1459 StringBuilder sb = new StringBuilder();
1460 for (int i = first; i < last; i++) {
1461 final char ch = txt.charAt(i);
1463 case '/': sb.append('_'); break;
1464 case '_': sb.append("_1"); break;
1465 case ';': sb.append("_2"); break;
1466 case '[': sb.append("_3"); break;
1467 default: sb.append(ch); break;
1470 return sb.toString();
1473 private static String findMethodName(MethodData m, StringBuilder cnt) {
1474 StringBuilder name = new StringBuilder();
1475 if ("<init>".equals(m.getName())) { // NOI18N
1476 name.append("cons"); // NOI18N
1477 } else if ("<clinit>".equals(m.getName())) { // NOI18N
1478 name.append("class"); // NOI18N
1480 name.append(m.getName());
1483 countArgs(m.getInternalSig(), new char[1], name, cnt);
1484 return name.toString();
1487 static String findMethodName(String[] mi, StringBuilder cnt, char[] returnType) {
1488 StringBuilder name = new StringBuilder();
1489 String descr = mi[2];//mi.getDescriptor();
1491 if ("<init>".equals(nm)) { // NOI18N
1492 name.append("cons"); // NOI18N
1496 countArgs(descr, returnType, name, cnt);
1497 return name.toString();
1500 private int invokeStaticMethod(byte[] byteCodes, int i, final StackMapper mapper, boolean isStatic)
1501 throws IOException {
1502 int methodIndex = readIntArg(byteCodes, i);
1503 String[] mi = jc.getFieldInfoName(methodIndex);
1504 char[] returnType = { 'V' };
1505 StringBuilder cnt = new StringBuilder();
1506 String mn = findMethodName(mi, cnt, returnType);
1508 final int numArguments = isStatic ? cnt.length() : cnt.length() + 1;
1509 final Variable[] vars = new Variable[numArguments];
1511 for (int j = numArguments - 1; j >= 0; --j) {
1512 vars[j] = mapper.pop();
1515 if (returnType[0] != 'V') {
1517 .append(mapper.pushT(VarType.fromFieldType(returnType[0])))
1521 final String in = mi[0];
1522 out.append(accessClass(in.replace('/', '_')));
1523 out.append("(false).");
1524 if (mn.startsWith("cons_")) {
1525 out.append("constructor.");
1531 out.append(".call(");
1533 if (numArguments > 0) {
1534 out.append(vars[0]);
1535 for (int j = 1; j < numArguments; ++j) {
1537 out.append(vars[j]);
1545 private int invokeVirtualMethod(byte[] byteCodes, int i, final StackMapper mapper)
1546 throws IOException {
1547 int methodIndex = readIntArg(byteCodes, i);
1548 String[] mi = jc.getFieldInfoName(methodIndex);
1549 char[] returnType = { 'V' };
1550 StringBuilder cnt = new StringBuilder();
1551 String mn = findMethodName(mi, cnt, returnType);
1553 final int numArguments = cnt.length() + 1;
1554 final Variable[] vars = new Variable[numArguments];
1556 for (int j = numArguments - 1; j >= 0; --j) {
1557 vars[j] = mapper.pop();
1560 if (returnType[0] != 'V') {
1562 .append(mapper.pushT(VarType.fromFieldType(returnType[0])))
1566 out.append(vars[0]).append('.');
1570 for (int j = 1; j < numArguments; ++j) {
1572 out.append(vars[j]);
1580 private void addReference(String cn) throws IOException {
1581 if (requireReference(cn)) {
1582 debug(" /* needs " + cn + " */");
1586 private void outType(String d, StringBuilder out) {
1588 while (d.charAt(0) == '[') {
1592 if (d.charAt(0) == 'L') {
1593 assert d.charAt(d.length() - 1) == ';';
1594 out.append(d.replace('/', '_').substring(0, d.length() - 1));
1600 private String encodeConstant(int entryIndex) throws IOException {
1601 String[] classRef = { null };
1602 String s = jc.stringValue(entryIndex, classRef);
1603 if (classRef[0] != null) {
1604 if (classRef[0].startsWith("[")) {
1605 s = accessClass("java_lang_Class") + "(false).forName__Ljava_lang_Class_2Ljava_lang_String_2('" + classRef[0] + "');";
1607 addReference(classRef[0]);
1608 s = accessClass(s.replace('/', '_')) + "(false).constructor.$class";
1614 private String javaScriptBody(String prefix, MethodData m, boolean isStatic) throws IOException {
1615 byte[] arr = m.findAnnotationData(true);
1619 final String jvmType = "Lorg/apidesign/bck2brwsr/core/JavaScriptBody;";
1620 class P extends AnnotationParser {
1626 String[] args = new String[30];
1630 protected void visitAttr(String type, String attr, String at, String value) {
1631 if (type.equals(jvmType)) {
1632 if ("body".equals(attr)) {
1634 } else if ("args".equals(attr)) {
1635 args[cnt++] = value;
1637 throw new IllegalArgumentException(attr);
1644 if (p.body == null) {
1647 StringBuilder cnt = new StringBuilder();
1648 final String mn = findMethodName(m, cnt);
1649 out.append(prefix).append(mn);
1650 out.append(" = function(");
1653 for (int i = 0; i < cnt.length(); i++) {
1655 space = outputArg(out, p.args, index);
1658 out.append(") {").append("\n");
1660 out.append("\n}\n");
1663 private static String className(ClassData jc) {
1664 //return jc.getName().getInternalName().replace('/', '_');
1665 return jc.getClassName().replace('/', '_');
1668 private static String[] findAnnotation(
1669 byte[] arr, ClassData cd, final String className,
1670 final String... attrNames
1671 ) throws IOException {
1675 final String[] values = new String[attrNames.length];
1676 final boolean[] found = { false };
1677 final String jvmType = "L" + className.replace('.', '/') + ";";
1678 AnnotationParser ap = new AnnotationParser(false) {
1680 protected void visitAttr(String type, String attr, String at, String value) {
1681 if (type.equals(jvmType)) {
1683 for (int i = 0; i < attrNames.length; i++) {
1684 if (attrNames[i].equals(attr)) {
1693 return found[0] ? values : null;
1696 private CharSequence initField(FieldData v) {
1697 final String is = v.getInternalSig();
1698 if (is.length() == 1) {
1699 switch (is.charAt(0)) {
1705 case 'I': return " = 0;";
1707 case 'D': return " = 0.0;";
1709 throw new IllegalStateException(is);
1715 private static void generateAnno(ClassData cd, final Appendable out, byte[] data) throws IOException {
1716 AnnotationParser ap = new AnnotationParser(true) {
1721 protected void visitAnnotationStart(String type) throws IOException {
1725 out.append('"').append(type).append("\" : {\n");
1730 protected void visitAnnotationEnd(String type) throws IOException {
1731 out.append("\n}\n");
1735 protected void visitAttr(String type, String attr, String attrType, String value)
1736 throws IOException {
1743 out.append(attr).append("__").append(attrType).append(" : ").append(value);
1749 private static String outputArg(Appendable out, String[] args, int indx) throws IOException {
1750 final String name = args[indx];
1754 if (name.contains(",")) {
1755 throw new IOException("Wrong parameter with ',': " + name);
1761 private static void emit(final Appendable out,
1762 final String format,
1763 final CharSequence... params) throws IOException {
1764 final int length = format.length();
1767 int paramOffset = format.indexOf('@');
1768 while ((paramOffset != -1) && (paramOffset < (length - 1))) {
1769 final char paramChar = format.charAt(paramOffset + 1);
1770 if ((paramChar >= '1') && (paramChar <= '9')) {
1771 final int paramIndex = paramChar - '0' - 1;
1773 out.append(format, processed, paramOffset);
1774 out.append(params[paramIndex]);
1777 processed = paramOffset + 1;
1780 paramOffset = format.indexOf('@', paramOffset + 1);
1783 out.append(format, processed, length);
1786 private void generateCatch(TrapData[] traps) throws IOException {
1787 out.append("} catch (e) {\n");
1789 for (TrapData e : traps) {
1793 if (e.catch_cpx != 0) { //not finally
1794 final String classInternalName = jc.getClassName(e.catch_cpx);
1795 addReference(classInternalName);
1796 if ("java/lang/Throwable".equals(classInternalName)) {
1797 out.append("if (e.$instOf_java_lang_Throwable) {");
1798 out.append(" var stA0 = e;");
1799 out.append("} else {");
1800 out.append(" var stA0 = vm.java_lang_Throwable(true);");
1801 out.append(" vm.java_lang_Throwable.cons__VLjava_lang_String_2.call(stA0, e.toString());");
1803 out.append("gt=" + e.handler_pc + "; continue;");
1805 out.append("if (e.$instOf_" + classInternalName.replace('/', '_') + ") {");
1806 out.append("gt=" + e.handler_pc + "; var stA0 = e; continue;");
1810 finallyPC = e.handler_pc;
1813 if (finallyPC == -1) {
1814 out.append("throw e;");
1816 out.append("gt=" + finallyPC + "; var stA0 = e; continue;");