Replacing for/switch flow control with multiple labeled for loops allowing fast jump back and if blocks for relatively cheap fall through. Local measurements on chrome indicate 30% speedup in the matrix multiplication benchmark.
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 static org.apidesign.vm4brwsr.ByteCodeParser.*;
24 /** Translator of the code inside class files to JavaScript.
26 * @author Jaroslav Tulach <jtulach@netbeans.org>
28 abstract class ByteCodeToJavaScript {
32 protected ByteCodeToJavaScript(Appendable out) {
36 /* Collects additional required resources.
38 * @param internalClassName classes that were referenced and should be loaded in order the
39 * generated JavaScript code works properly. The names are in internal
40 * JVM form so String is <code>java/lang/String</code>.
42 protected abstract boolean requireReference(String internalClassName);
45 * @param resourcePath name of resources to read
47 protected abstract void requireScript(String resourcePath) throws IOException;
49 /** Allows subclasses to redefine what field a function representing a
50 * class gets assigned. By default it returns the suggested name followed
51 * by <code>" = "</code>;
53 * @param className suggested name of the class
55 /* protected */ String assignClass(String className) {
56 return className + " = ";
58 /* protected */ String accessClass(String classOperation) {
59 return classOperation;
62 /** Prints out a debug message.
64 * @param msg the message
65 * @return true if the message has been printed
68 boolean debug(String msg) throws IOException {
74 * Converts a given class file to a JavaScript version.
76 * @param classFile input stream with code of the .class file
77 * @return the initialization code for this class, if any. Otherwise <code>null</code>
79 * @throws IOException if something goes wrong during read or write or translating
82 public String compile(InputStream classFile) throws IOException {
83 this.jc = new ClassData(classFile);
84 if (jc.getMajor_version() < 50) {
85 throw new IOException("Can't compile " + jc.getClassName() + ". Class file version " + jc.getMajor_version() + "."
86 + jc.getMinor_version() + " - recompile with -target 1.6 (at least)."
89 byte[] arrData = jc.findAnnotationData(true);
90 String[] arr = findAnnotation(arrData, jc,
91 "org.apidesign.bck2brwsr.core.ExtraJavaScript",
92 "resource", "processByteCode"
95 requireScript(arr[0]);
96 if ("0".equals(arr[1])) {
100 String[] proto = findAnnotation(arrData, jc,
101 "org.apidesign.bck2brwsr.core.JavaScriptPrototype",
102 "container", "prototype"
104 StringArray toInitilize = new StringArray();
105 final String className = className(jc);
106 out.append("\n\n").append(assignClass(className));
107 out.append("function CLS() {");
108 out.append("\n if (!CLS.$class) {");
110 String sc = jc.getSuperClassName(); // with _
111 out.append("\n var pp = ").
112 append(accessClass(sc.replace('/', '_'))).append("(true);");
113 out.append("\n var p = CLS.prototype = pp;");
114 out.append("\n var c = p;");
115 out.append("\n var sprcls = pp.constructor.$class;");
117 out.append("\n var p = CLS.prototype = ").append(proto[1]).append(";");
118 if (proto[0] == null) {
121 out.append("\n var c = ").append(proto[0]).append(";");
122 out.append("\n var sprcls = null;");
124 for (FieldData v : jc.getFields()) {
126 out.append("\n CLS.").append(v.getName()).append(initField(v));
127 out.append("\n c._").append(v.getName()).append(" = function (v) {")
128 .append(" if (arguments.length == 1) CLS.").append(v.getName())
129 .append(" = v; return CLS.").
130 append(v.getName()).append("; };");
132 out.append("\n c._").append(v.getName()).append(" = function (v) {")
133 .append(" if (arguments.length == 1) this.fld_").
134 append(className).append('_').append(v.getName())
135 .append(" = v; return this.fld_").
136 append(className).append('_').append(v.getName())
140 for (MethodData m : jc.getMethods()) {
141 byte[] onlyArr = m.findAnnotationData(true);
142 String[] only = findAnnotation(onlyArr, jc,
143 "org.apidesign.bck2brwsr.core.JavaScriptOnly",
147 if (only[0] != null && only[1] != null) {
148 out.append("\n p.").append(only[0]).append(" = ")
149 .append(only[1]).append(";");
157 mn = generateStaticMethod(prefix, m, toInitilize);
159 if (m.isConstructor()) {
161 mn = generateInstanceMethod(prefix, m);
164 mn = generateInstanceMethod(prefix, m);
167 byte[] runAnno = m.findAnnotationData(false);
168 if (runAnno != null) {
169 out.append(prefix).append(mn).append(".anno = {");
170 generateAnno(jc, out, runAnno);
173 out.append(prefix).append(mn).append(".access = " + m.getAccess()).append(";");
174 out.append(prefix).append(mn).append(".cls = CLS;");
176 out.append("\n c.constructor = CLS;");
177 out.append("\n c.$instOf_").append(className).append(" = true;");
178 for (String superInterface : jc.getSuperInterfaces()) {
179 out.append("\n c.$instOf_").append(superInterface.replace('/', '_')).append(" = true;");
181 out.append("\n CLS.$class = 'temp';");
182 out.append("\n CLS.$class = ");
183 out.append(accessClass("java_lang_Class(true);"));
184 out.append("\n CLS.$class.jvmName = '").append(jc.getClassName()).append("';");
185 out.append("\n CLS.$class.superclass = sprcls;");
186 out.append("\n CLS.$class.access = ").append(jc.getAccessFlags()+";");
187 out.append("\n CLS.$class.cnstr = CLS;");
188 byte[] classAnno = jc.findAnnotationData(false);
189 if (classAnno != null) {
190 out.append("\n CLS.$class.anno = {");
191 generateAnno(jc, out, classAnno);
194 for (String init : toInitilize.toArray()) {
195 out.append("\n ").append(init).append("();");
198 out.append("\n if (arguments.length === 0) {");
199 out.append("\n if (!(this instanceof CLS)) {");
200 out.append("\n return new CLS();");
202 for (FieldData v : jc.getFields()) {
203 byte[] onlyArr = v.findAnnotationData(true);
204 String[] only = findAnnotation(onlyArr, jc,
205 "org.apidesign.bck2brwsr.core.JavaScriptOnly",
209 if (only[0] != null && only[1] != null) {
210 out.append("\n p.").append(only[0]).append(" = ")
211 .append(only[1]).append(";");
216 out.append("\n this.fld_").
217 append(className).append('_').
218 append(v.getName()).append(initField(v));
221 out.append("\n return this;");
223 out.append("\n return arguments[0] ? new CLS() : CLS.prototype;");
225 // StringBuilder sb = new StringBuilder();
226 // for (String init : toInitilize.toArray()) {
227 // sb.append("\n").append(init).append("();");
231 private String generateStaticMethod(String prefix, MethodData m, StringArray toInitilize) throws IOException {
232 String jsb = javaScriptBody(prefix, m, true);
236 final String mn = findMethodName(m, new StringBuilder());
237 if (mn.equals("class__V")) {
238 toInitilize.add(accessClass(className(jc)) + "(false)." + mn);
240 generateMethod(prefix, mn, m);
244 private String generateInstanceMethod(String prefix, MethodData m) throws IOException {
245 String jsb = javaScriptBody(prefix, m, false);
249 final String mn = findMethodName(m, new StringBuilder());
250 generateMethod(prefix, mn, m);
254 private void generateMethod(String prefix, String name, MethodData m)
256 final StackMapIterator stackMapIterator = m.createStackMapIterator();
257 TrapDataIterator trap = m.getTrapDataIterator();
258 final LocalsMapper lmapper =
259 new LocalsMapper(stackMapIterator.getArguments());
261 out.append(prefix).append(name).append(" = function(");
262 lmapper.outputArguments(out, m.isStatic());
263 out.append(") {").append("\n");
265 final byte[] byteCodes = m.getCode();
266 if (byteCodes == null) {
267 out.append(" throw 'no code found for ")
268 .append(jc.getClassName()).append('.')
269 .append(m.getName()).append("';\n");
274 final StackMapper smapper = new StackMapper();
277 out.append(" var ").append(" lcA0 = this;\n");
280 int lastStackFrame = -1;
281 TrapData[] previousTrap = null;
282 boolean wide = false;
284 out.append("\n var gt = 0;\n");
286 for (int i = 0; i < byteCodes.length; i++) {
288 stackMapIterator.advanceTo(i);
289 boolean changeInCatch = trap.advanceTo(i);
290 if (changeInCatch || lastStackFrame != stackMapIterator.getFrameIndex()) {
291 if (previousTrap != null) {
292 generateCatch(previousTrap, i);
296 if (lastStackFrame != stackMapIterator.getFrameIndex()) {
301 lastStackFrame = stackMapIterator.getFrameIndex();
302 lmapper.syncWithFrameLocals(stackMapIterator.getFrameLocals());
303 smapper.syncWithFrameStack(stackMapIterator.getFrameStack());
304 out.append(" X_" + i).append(": for (;;) { IF: if (gt <= " + i + ") {\n");
306 changeInCatch = true;
308 debug(" /* " + i + " */ ");
310 if (changeInCatch && trap.useTry()) {
312 previousTrap = trap.current();
314 final int c = readUByte(byteCodes, i);
317 emit(out, "var @1 = @2;", smapper.pushA(), lmapper.getA(0));
320 emit(out, "var @1 = @2;", smapper.pushI(), lmapper.getI(0));
323 emit(out, "var @1 = @2;", smapper.pushL(), lmapper.getL(0));
326 emit(out, "var @1 = @2;", smapper.pushF(), lmapper.getF(0));
329 emit(out, "var @1 = @2;", smapper.pushD(), lmapper.getD(0));
332 emit(out, "var @1 = @2;", smapper.pushA(), lmapper.getA(1));
335 emit(out, "var @1 = @2;", smapper.pushI(), lmapper.getI(1));
338 emit(out, "var @1 = @2;", smapper.pushL(), lmapper.getL(1));
341 emit(out, "var @1 = @2;", smapper.pushF(), lmapper.getF(1));
344 emit(out, "var @1 = @2;", smapper.pushD(), lmapper.getD(1));
347 emit(out, "var @1 = @2;", smapper.pushA(), lmapper.getA(2));
350 emit(out, "var @1 = @2;", smapper.pushI(), lmapper.getI(2));
353 emit(out, "var @1 = @2;", smapper.pushL(), lmapper.getL(2));
356 emit(out, "var @1 = @2;", smapper.pushF(), lmapper.getF(2));
359 emit(out, "var @1 = @2;", smapper.pushD(), lmapper.getD(2));
362 emit(out, "var @1 = @2;", smapper.pushA(), lmapper.getA(3));
365 emit(out, "var @1 = @2;", smapper.pushI(), lmapper.getI(3));
368 emit(out, "var @1 = @2;", smapper.pushL(), lmapper.getL(3));
371 emit(out, "var @1 = @2;", smapper.pushF(), lmapper.getF(3));
374 emit(out, "var @1 = @2;", smapper.pushD(), lmapper.getD(3));
378 final int indx = wide ? readUShort(byteCodes, i++)
379 : readUByte(byteCodes, i);
381 emit(out, "var @1 = @2;",
382 smapper.pushI(), lmapper.getI(indx));
387 final int indx = wide ? readUShort(byteCodes, i++)
388 : readUByte(byteCodes, i);
390 emit(out, "var @1 = @2;",
391 smapper.pushL(), lmapper.getL(indx));
396 final int indx = wide ? readUShort(byteCodes, i++)
397 : readUByte(byteCodes, i);
399 emit(out, "var @1 = @2;",
400 smapper.pushF(), lmapper.getF(indx));
405 final int indx = wide ? readUShort(byteCodes, i++)
406 : readUByte(byteCodes, i);
408 emit(out, "var @1 = @2;",
409 smapper.pushD(), lmapper.getD(indx));
414 final int indx = wide ? readUShort(byteCodes, i++)
415 : readUByte(byteCodes, i);
417 emit(out, "var @1 = @2;",
418 smapper.pushA(), lmapper.getA(indx));
423 final int indx = wide ? readUShort(byteCodes, i++)
424 : readUByte(byteCodes, i);
426 emit(out, "var @1 = @2;",
427 lmapper.setI(indx), smapper.popI());
432 final int indx = wide ? readUShort(byteCodes, i++)
433 : readUByte(byteCodes, i);
435 emit(out, "var @1 = @2;",
436 lmapper.setL(indx), smapper.popL());
441 final int indx = wide ? readUShort(byteCodes, i++)
442 : readUByte(byteCodes, i);
444 emit(out, "var @1 = @2;",
445 lmapper.setF(indx), smapper.popF());
450 final int indx = wide ? readUShort(byteCodes, i++)
451 : readUByte(byteCodes, i);
453 emit(out, "var @1 = @2;",
454 lmapper.setD(indx), smapper.popD());
459 final int indx = wide ? readUShort(byteCodes, i++)
460 : readUByte(byteCodes, i);
462 emit(out, "var @1 = @2;",
463 lmapper.setA(indx), smapper.popA());
467 emit(out, "var @1 = @2;", lmapper.setA(0), smapper.popA());
470 emit(out, "var @1 = @2;", lmapper.setI(0), smapper.popI());
473 emit(out, "var @1 = @2;", lmapper.setL(0), smapper.popL());
476 emit(out, "var @1 = @2;", lmapper.setF(0), smapper.popF());
479 emit(out, "var @1 = @2;", lmapper.setD(0), smapper.popD());
482 emit(out, "var @1 = @2;", lmapper.setA(1), smapper.popA());
485 emit(out, "var @1 = @2;", lmapper.setI(1), smapper.popI());
488 emit(out, "var @1 = @2;", lmapper.setL(1), smapper.popL());
491 emit(out, "var @1 = @2;", lmapper.setF(1), smapper.popF());
494 emit(out, "var @1 = @2;", lmapper.setD(1), smapper.popD());
497 emit(out, "var @1 = @2;", lmapper.setA(2), smapper.popA());
500 emit(out, "var @1 = @2;", lmapper.setI(2), smapper.popI());
503 emit(out, "var @1 = @2;", lmapper.setL(2), smapper.popL());
506 emit(out, "var @1 = @2;", lmapper.setF(2), smapper.popF());
509 emit(out, "var @1 = @2;", lmapper.setD(2), smapper.popD());
512 emit(out, "var @1 = @2;", lmapper.setA(3), smapper.popA());
515 emit(out, "var @1 = @2;", lmapper.setI(3), smapper.popI());
518 emit(out, "var @1 = @2;", lmapper.setL(3), smapper.popL());
521 emit(out, "var @1 = @2;", lmapper.setF(3), smapper.popF());
524 emit(out, "var @1 = @2;", lmapper.setD(3), smapper.popD());
527 emit(out, "@1 = @1.add32(@2);", smapper.getI(1), smapper.popI());
530 emit(out, "@1 = @1.add64(@2);", smapper.getL(1), smapper.popL());
533 emit(out, "@1 += @2;", smapper.getF(1), smapper.popF());
536 emit(out, "@1 += @2;", smapper.getD(1), smapper.popD());
539 emit(out, "@1 = @1.sub32(@2);", smapper.getI(1), smapper.popI());
542 emit(out, "@1 = @1.sub64(@2);", smapper.getL(1), smapper.popL());
545 emit(out, "@1 -= @2;", smapper.getF(1), smapper.popF());
548 emit(out, "@1 -= @2;", smapper.getD(1), smapper.popD());
551 emit(out, "@1 = @1.mul32(@2);", smapper.getI(1), smapper.popI());
554 emit(out, "@1 = @1.mul64(@2);", smapper.getL(1), smapper.popL());
557 emit(out, "@1 *= @2;", smapper.getF(1), smapper.popF());
560 emit(out, "@1 *= @2;", smapper.getD(1), smapper.popD());
563 emit(out, "@1 = @1.div32(@2);",
564 smapper.getI(1), smapper.popI());
567 emit(out, "@1 = @1.div64(@2);",
568 smapper.getL(1), smapper.popL());
571 emit(out, "@1 /= @2;", smapper.getF(1), smapper.popF());
574 emit(out, "@1 /= @2;", smapper.getD(1), smapper.popD());
577 emit(out, "@1 = @1.mod32(@2);",
578 smapper.getI(1), smapper.popI());
581 emit(out, "@1 = @1.mod64(@2);",
582 smapper.getL(1), smapper.popL());
585 emit(out, "@1 %= @2;", smapper.getF(1), smapper.popF());
588 emit(out, "@1 %= @2;", smapper.getD(1), smapper.popD());
591 emit(out, "@1 &= @2;", smapper.getI(1), smapper.popI());
594 emit(out, "@1 = @1.and64(@2);", smapper.getL(1), smapper.popL());
597 emit(out, "@1 |= @2;", smapper.getI(1), smapper.popI());
600 emit(out, "@1 = @1.or64(@2);", smapper.getL(1), smapper.popL());
603 emit(out, "@1 ^= @2;", smapper.getI(1), smapper.popI());
606 emit(out, "@1 = @1.xor64(@2);", smapper.getL(1), smapper.popL());
609 emit(out, "@1 = @1.neg32();", smapper.getI(0));
612 emit(out, "@1 = @1.neg64();", smapper.getL(0));
615 emit(out, "@1 = -@1;", smapper.getF(0));
618 emit(out, "@1 = -@1;", smapper.getD(0));
621 emit(out, "@1 <<= @2;", smapper.getI(1), smapper.popI());
624 emit(out, "@1 = @1.shl64(@2);", smapper.getL(1), smapper.popI());
627 emit(out, "@1 >>= @2;", smapper.getI(1), smapper.popI());
630 emit(out, "@1 = @1.shr64(@2);", smapper.getL(1), smapper.popI());
633 emit(out, "@1 >>>= @2;", smapper.getI(1), smapper.popI());
636 emit(out, "@1 = @1.ushr64(@2);", smapper.getL(1), smapper.popI());
640 final int varIndx = wide ? readUShort(byteCodes, i++)
641 : readUByte(byteCodes, i);
643 final int incrBy = wide ? readShort(byteCodes, i++)
647 emit(out, "@1++;", lmapper.getI(varIndx));
649 emit(out, "@1 += @2;",
650 lmapper.getI(varIndx),
651 Integer.toString(incrBy));
656 emit(out, "return;");
659 emit(out, "return @1;", smapper.popI());
662 emit(out, "return @1;", smapper.popL());
665 emit(out, "return @1;", smapper.popF());
668 emit(out, "return @1;", smapper.popD());
671 emit(out, "return @1;", smapper.popA());
674 emit(out, "var @2 = @1;", smapper.popI(), smapper.pushL());
677 emit(out, "var @2 = @1;", smapper.popI(), smapper.pushF());
680 emit(out, "var @2 = @1;", smapper.popI(), smapper.pushD());
683 emit(out, "var @2 = @1.toInt32();", smapper.popL(), smapper.pushI());
687 emit(out, "var @2 = @1.toFP();", smapper.popL(), smapper.pushF());
690 emit(out, "var @2 = @1.toFP();", smapper.popL(), smapper.pushD());
693 emit(out, "var @2 = @1;", smapper.popF(), smapper.pushD());
696 emit(out, "var @2 = @1;", smapper.popD(), smapper.pushF());
699 emit(out, "var @2 = @1.toInt32();",
700 smapper.popF(), smapper.pushI());
703 emit(out, "var @2 = @1.toLong();",
704 smapper.popF(), smapper.pushL());
707 emit(out, "var @2 = @1.toInt32();",
708 smapper.popD(), smapper.pushI());
711 emit(out, "var @2 = @1.toLong();",
712 smapper.popD(), smapper.pushL());
715 emit(out, "var @1 = @1.toInt8();", smapper.getI(0));
718 out.append("{ /* number conversion */ }");
721 emit(out, "var @1 = @1.toInt16();", smapper.getI(0));
723 case opc_aconst_null:
724 emit(out, "var @1 = null;", smapper.pushA());
727 emit(out, "var @1 = -1;", smapper.pushI());
730 emit(out, "var @1 = 0;", smapper.pushI());
733 emit(out, "var @1 = 0;", smapper.pushD());
736 emit(out, "var @1 = 0;", smapper.pushL());
739 emit(out, "var @1 = 0;", smapper.pushF());
742 emit(out, "var @1 = 1;", smapper.pushI());
745 emit(out, "var @1 = 1;", smapper.pushL());
748 emit(out, "var @1 = 1;", smapper.pushF());
751 emit(out, "var @1 = 1;", smapper.pushD());
754 emit(out, "var @1 = 2;", smapper.pushI());
757 emit(out, "var @1 = 2;", smapper.pushF());
760 emit(out, "var @1 = 3;", smapper.pushI());
763 emit(out, "var @1 = 4;", smapper.pushI());
766 emit(out, "var @1 = 5;", smapper.pushI());
769 int indx = readUByte(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);
777 int indx = readIntArg(byteCodes, i);
779 String v = encodeConstant(indx);
780 int type = VarType.fromConstantType(jc.getTag(indx));
781 if (type == VarType.LONG) {
782 final Long lv = new Long(v);
783 final int low = (int)(lv.longValue() & 0xFFFFFFFF);
784 final int hi = (int)(lv.longValue() >> 32);
785 emit(out, "var @1 = 0x@3.next32(0x@2);", smapper.pushL(),
786 Integer.toHexString(low), Integer.toHexString(hi));
788 emit(out, "var @1 = @2;", smapper.pushT(type), v);
793 emit(out, "var @3 = @2.compare64(@1);",
794 smapper.popL(), smapper.popL(), smapper.pushI());
798 emit(out, "var @3 = (@2 == @1) ? 0 : ((@2 < @1) ? -1 : 1);",
799 smapper.popF(), smapper.popF(), smapper.pushI());
803 emit(out, "var @3 = (@2 == @1) ? 0 : ((@2 < @1) ? -1 : 1);",
804 smapper.popD(), smapper.popD(), smapper.pushI());
807 i = generateIf(byteCodes, i, smapper.popA(), smapper.popA(),
811 i = generateIf(byteCodes, i, smapper.popA(), smapper.popA(),
815 i = generateIf(byteCodes, i, smapper.popI(), smapper.popI(),
819 int indx = i + readIntArg(byteCodes, i);
820 emitIf(out, "if (@1 == 0) ",
821 smapper.popI(), i, indx);
826 int indx = i + readIntArg(byteCodes, i);
827 emitIf(out, "if (@1 != 0) ",
828 smapper.popI(), i, indx);
833 int indx = i + readIntArg(byteCodes, i);
834 emitIf(out, "if (@1 < 0) ",
835 smapper.popI(), i, indx);
840 int indx = i + readIntArg(byteCodes, i);
841 emitIf(out, "if (@1 <= 0) ",
842 smapper.popI(), i, indx);
847 int indx = i + readIntArg(byteCodes, i);
848 emitIf(out, "if (@1 > 0) ",
849 smapper.popI(), i, indx);
854 int indx = i + readIntArg(byteCodes, i);
855 emitIf(out, "if (@1 >= 0) ",
856 smapper.popI(), i, indx);
860 case opc_ifnonnull: {
861 int indx = i + readIntArg(byteCodes, i);
862 emitIf(out, "if (@1 !== null) ",
863 smapper.popA(), i, indx);
868 int indx = i + readIntArg(byteCodes, i);
869 emitIf(out, "if (@1 === null) ",
870 smapper.popA(), i, indx);
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 i = generateIf(byteCodes, i, smapper.popI(), smapper.popI(),
891 i = generateIf(byteCodes, i, smapper.popI(), smapper.popI(),
895 int indx = i + readIntArg(byteCodes, i);
900 case opc_lookupswitch: {
901 int table = i / 4 * 4 + 4;
902 int dflt = i + readInt4(byteCodes, table);
904 int n = readInt4(byteCodes, table);
906 out.append("switch (").append(smapper.popI()).append(") {\n");
908 int cnstnt = readInt4(byteCodes, table);
910 int offset = i + readInt4(byteCodes, table);
912 out.append(" case " + cnstnt).append(": "); goTo(out, i, offset); out.append('\n');
914 out.append(" default: "); goTo(out, i, dflt); out.append("\n}");
918 case opc_tableswitch: {
919 int table = i / 4 * 4 + 4;
920 int dflt = i + readInt4(byteCodes, table);
922 int low = readInt4(byteCodes, table);
924 int high = readInt4(byteCodes, table);
926 out.append("switch (").append(smapper.popI()).append(") {\n");
927 while (low <= high) {
928 int offset = i + readInt4(byteCodes, table);
930 out.append(" case " + low).append(":"); goTo(out, i, offset); out.append('\n');
933 out.append(" default: "); goTo(out, i, dflt); out.append("\n}");
937 case opc_invokeinterface: {
938 i = invokeVirtualMethod(byteCodes, i, smapper) + 2;
941 case opc_invokevirtual:
942 i = invokeVirtualMethod(byteCodes, i, smapper);
944 case opc_invokespecial:
945 i = invokeStaticMethod(byteCodes, i, smapper, false);
947 case opc_invokestatic:
948 i = invokeStaticMethod(byteCodes, i, smapper, true);
951 int indx = readIntArg(byteCodes, i);
952 String ci = jc.getClassName(indx);
953 emit(out, "var @1 = new @2;",
954 smapper.pushA(), accessClass(ci.replace('/', '_')));
960 int atype = readUByte(byteCodes, ++i);
963 case 4: jvmType = "[Z"; break;
964 case 5: jvmType = "[C"; break;
965 case 6: jvmType = "[F"; break;
966 case 7: jvmType = "[D"; break;
967 case 8: jvmType = "[B"; break;
968 case 9: jvmType = "[S"; break;
969 case 10: jvmType = "[I"; break;
970 case 11: jvmType = "[J"; break;
971 default: throw new IllegalStateException("Array type: " + atype);
973 emit(out, "var @2 = Array.prototype.newArray__Ljava_lang_Object_2ZLjava_lang_String_2I(true, '@3', @1);",
974 smapper.popI(), smapper.pushA(), jvmType);
976 case opc_anewarray: {
977 int type = readIntArg(byteCodes, i);
979 String typeName = jc.getClassName(type);
980 if (typeName.startsWith("[")) {
981 typeName = "[" + typeName;
983 typeName = "[L" + typeName + ";";
985 emit(out, "var @2 = Array.prototype.newArray__Ljava_lang_Object_2ZLjava_lang_String_2I(false, '@3', @1);",
986 smapper.popI(), smapper.pushA(), typeName);
989 case opc_multianewarray: {
990 int type = readIntArg(byteCodes, i);
992 String typeName = jc.getClassName(type);
993 int dim = readUByte(byteCodes, ++i);
994 StringBuilder dims = new StringBuilder();
996 for (int d = 0; d < dim; d++) {
1000 dims.insert(1, smapper.popI());
1003 emit(out, "var @2 = Array.prototype.multiNewArray__Ljava_lang_Object_2Ljava_lang_String_2_3II('@3', @1, 0);",
1004 dims.toString(), smapper.pushA(), typeName);
1007 case opc_arraylength:
1008 emit(out, "var @2 = @1.length;",
1009 smapper.popA(), smapper.pushI());
1012 emit(out, "@3.at(@2, @1);",
1013 smapper.popL(), smapper.popI(), smapper.popA());
1016 emit(out, "@3.at(@2, @1);",
1017 smapper.popF(), smapper.popI(), smapper.popA());
1020 emit(out, "@3.at(@2, @1);",
1021 smapper.popD(), smapper.popI(), smapper.popA());
1024 emit(out, "@3.at(@2, @1);",
1025 smapper.popA(), smapper.popI(), smapper.popA());
1031 emit(out, "@3.at(@2, @1);",
1032 smapper.popI(), smapper.popI(), smapper.popA());
1035 emit(out, "var @3 = @2.at(@1);",
1036 smapper.popI(), smapper.popA(), smapper.pushL());
1039 emit(out, "var @3 = @2.at(@1);",
1040 smapper.popI(), smapper.popA(), smapper.pushF());
1043 emit(out, "var @3 = @2.at(@1);",
1044 smapper.popI(), smapper.popA(), smapper.pushD());
1047 emit(out, "var @3 = @2.at(@1);",
1048 smapper.popI(), smapper.popA(), smapper.pushA());
1054 emit(out, "var @3 = @2.at(@1);",
1055 smapper.popI(), smapper.popA(), smapper.pushI());
1063 final Variable v = smapper.get(0);
1064 emit(out, "var @1 = @2;", smapper.pushT(v.getType()), v);
1068 final Variable vi1 = smapper.get(0);
1070 if (vi1.isCategory2()) {
1071 emit(out, "var @1 = @2;",
1072 smapper.pushT(vi1.getType()), vi1);
1074 final Variable vi2 = smapper.get(1);
1075 emit(out, "var @1 = @2, @3 = @4;",
1076 smapper.pushT(vi2.getType()), vi2,
1077 smapper.pushT(vi1.getType()), vi1);
1082 final Variable vi1 = smapper.pop();
1083 final Variable vi2 = smapper.pop();
1084 final Variable vo3 = smapper.pushT(vi1.getType());
1085 final Variable vo2 = smapper.pushT(vi2.getType());
1086 final Variable vo1 = smapper.pushT(vi1.getType());
1088 emit(out, "var @1 = @2, @3 = @4, @5 = @6;",
1089 vo1, vi1, vo2, vi2, vo3, vo1);
1093 final Variable vi1 = smapper.pop();
1094 final Variable vi2 = smapper.pop();
1096 if (vi1.isCategory2()) {
1097 final Variable vo3 = smapper.pushT(vi1.getType());
1098 final Variable vo2 = smapper.pushT(vi2.getType());
1099 final Variable vo1 = smapper.pushT(vi1.getType());
1101 emit(out, "var @1 = @2, @3 = @4, @5 = @6;",
1102 vo1, vi1, vo2, vi2, vo3, vo1);
1104 final Variable vi3 = smapper.pop();
1105 final Variable vo5 = smapper.pushT(vi2.getType());
1106 final Variable vo4 = smapper.pushT(vi1.getType());
1107 final Variable vo3 = smapper.pushT(vi3.getType());
1108 final Variable vo2 = smapper.pushT(vi2.getType());
1109 final Variable vo1 = smapper.pushT(vi1.getType());
1111 emit(out, "var @1 = @2, @3 = @4, @5 = @6,",
1112 vo1, vi1, vo2, vi2, vo3, vi3);
1113 emit(out, " @1 = @2, @3 = @4;",
1114 vo4, vo1, vo5, vo2);
1119 final Variable vi1 = smapper.pop();
1120 final Variable vi2 = smapper.pop();
1122 if (vi2.isCategory2()) {
1123 final Variable vo3 = smapper.pushT(vi1.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;",
1128 vo1, vi1, vo2, vi2, vo3, vo1);
1130 final Variable vi3 = smapper.pop();
1131 final Variable vo4 = smapper.pushT(vi1.getType());
1132 final Variable vo3 = smapper.pushT(vi3.getType());
1133 final Variable vo2 = smapper.pushT(vi2.getType());
1134 final Variable vo1 = smapper.pushT(vi1.getType());
1136 emit(out, "var @1 = @2, @3 = @4, @5 = @6, @7 = @8;",
1137 vo1, vi1, vo2, vi2, vo3, vi3, vo4, vo1);
1142 final Variable vi1 = smapper.pop();
1143 final Variable vi2 = smapper.pop();
1145 if (vi1.isCategory2()) {
1146 if (vi2.isCategory2()) {
1147 final Variable vo3 = smapper.pushT(vi1.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;",
1152 vo1, vi1, vo2, vi2, vo3, vo1);
1154 final Variable vi3 = smapper.pop();
1155 final Variable vo4 = smapper.pushT(vi1.getType());
1156 final Variable vo3 = smapper.pushT(vi3.getType());
1157 final Variable vo2 = smapper.pushT(vi2.getType());
1158 final Variable vo1 = smapper.pushT(vi1.getType());
1160 emit(out, "var @1 = @2, @3 = @4, @5 = @6, @7 = @8;",
1161 vo1, vi1, vo2, vi2, vo3, vi3, vo4, vo1);
1164 final Variable vi3 = smapper.pop();
1166 if (vi3.isCategory2()) {
1167 final Variable vo5 = smapper.pushT(vi2.getType());
1168 final Variable vo4 = smapper.pushT(vi1.getType());
1169 final Variable vo3 = smapper.pushT(vi3.getType());
1170 final Variable vo2 = smapper.pushT(vi2.getType());
1171 final Variable vo1 = smapper.pushT(vi1.getType());
1173 emit(out, "var @1 = @2, @3 = @4, @5 = @6,",
1174 vo1, vi1, vo2, vi2, vo3, vi3);
1175 emit(out, " @1 = @2, @3 = @4;",
1176 vo4, vo1, vo5, vo2);
1178 final Variable vi4 = smapper.pop();
1179 final Variable vo6 = smapper.pushT(vi2.getType());
1180 final Variable vo5 = smapper.pushT(vi1.getType());
1181 final Variable vo4 = smapper.pushT(vi4.getType());
1182 final Variable vo3 = smapper.pushT(vi3.getType());
1183 final Variable vo2 = smapper.pushT(vi2.getType());
1184 final Variable vo1 = smapper.pushT(vi1.getType());
1186 emit(out, "var @1 = @2, @3 = @4, @5 = @6, @7 = @8,",
1187 vo1, vi1, vo2, vi2, vo3, vi3, vo4, vi4);
1188 emit(out, " @1 = @2, @3 = @4;",
1189 vo5, vo1, vo6, vo2);
1195 final Variable vi1 = smapper.get(0);
1196 final Variable vi2 = smapper.get(1);
1198 if (vi1.getType() == vi2.getType()) {
1199 final Variable tmp = smapper.pushT(vi1.getType());
1201 emit(out, "var @1 = @2, @2 = @3, @3 = @1;",
1206 smapper.pushT(vi1.getType());
1207 smapper.pushT(vi2.getType());
1212 emit(out, "var @1 = @2;",
1213 smapper.pushI(), Integer.toString(byteCodes[++i]));
1216 emit(out, "var @1 = @2;",
1218 Integer.toString(readIntArg(byteCodes, i)));
1221 case opc_getfield: {
1222 int indx = readIntArg(byteCodes, i);
1223 String[] fi = jc.getFieldInfoName(indx);
1224 final int type = VarType.fromFieldType(fi[2].charAt(0));
1225 final String mangleClass = mangleSig(fi[0]);
1226 final String mangleClassAccess = accessClass(mangleClass);
1227 emit(out, "var @2 = @4(false)._@3.call(@1);",
1229 smapper.pushT(type), fi[1], mangleClassAccess
1234 case opc_putfield: {
1235 int indx = readIntArg(byteCodes, i);
1236 String[] fi = jc.getFieldInfoName(indx);
1237 final int type = VarType.fromFieldType(fi[2].charAt(0));
1238 final String mangleClass = mangleSig(fi[0]);
1239 final String mangleClassAccess = accessClass(mangleClass);
1240 emit(out, "@4(false)._@3.call(@2, @1);",
1242 smapper.popA(), fi[1],
1248 case opc_getstatic: {
1249 int indx = readIntArg(byteCodes, i);
1250 String[] fi = jc.getFieldInfoName(indx);
1251 final int type = VarType.fromFieldType(fi[2].charAt(0));
1252 emit(out, "var @1 = @2(false)._@3();",
1253 smapper.pushT(type),
1254 accessClass(fi[0].replace('/', '_')), fi[1]);
1256 addReference(fi[0]);
1259 case opc_putstatic: {
1260 int indx = readIntArg(byteCodes, i);
1261 String[] fi = jc.getFieldInfoName(indx);
1262 final int type = VarType.fromFieldType(fi[2].charAt(0));
1263 emit(out, "@1(false)._@2(@3);",
1264 accessClass(fi[0].replace('/', '_')), fi[1],
1265 smapper.popT(type));
1267 addReference(fi[0]);
1270 case opc_checkcast: {
1271 int indx = readIntArg(byteCodes, i);
1272 final String type = jc.getClassName(indx);
1273 if (!type.startsWith("[")) {
1275 "if (@1 !== null && !@1.$instOf_@2) throw {};",
1276 smapper.getA(0), type.replace('/', '_'));
1278 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);",
1279 smapper.getA(0), type
1285 case opc_instanceof: {
1286 int indx = readIntArg(byteCodes, i);
1287 final String type = jc.getClassName(indx);
1288 if (!type.startsWith("[")) {
1289 emit(out, "var @2 = @1 != null && @1.$instOf_@3 ? 1 : 0;",
1290 smapper.popA(), smapper.pushI(),
1291 type.replace('/', '_'));
1293 emit(out, "var @2 = vm.java_lang_Class(false).forName__Ljava_lang_Class_2Ljava_lang_String_2('@3').isInstance__ZLjava_lang_Object_2(@1);",
1294 smapper.popA(), smapper.pushI(),
1302 final Variable v = smapper.popA();
1305 emit(out, "{ var @1 = @2; throw @2; }",
1306 smapper.pushA(), v);
1310 case opc_monitorenter: {
1311 out.append("/* monitor enter */");
1316 case opc_monitorexit: {
1317 out.append("/* monitor exit */");
1328 emit(out, "throw 'unknown bytecode @1';",
1329 Integer.toString(c));
1333 for (int j = prev; j <= i; j++) {
1335 final int cc = readUByte(byteCodes, j);
1336 out.append(Integer.toString(cc));
1341 if (previousTrap != null) {
1342 generateCatch(previousTrap, byteCodes.length);
1344 out.append("\n }\n");
1345 while (openBraces-- > 0) {
1351 private int generateIf(byte[] byteCodes, int i,
1352 final Variable v2, final Variable v1,
1353 final String test) throws IOException {
1354 int indx = i + readIntArg(byteCodes, i);
1355 out.append("if (").append(v1)
1356 .append(' ').append(test).append(' ')
1357 .append(v2).append(") ");
1362 private int readIntArg(byte[] byteCodes, int offsetInstruction) {
1363 final int indxHi = byteCodes[offsetInstruction + 1] << 8;
1364 final int indxLo = byteCodes[offsetInstruction + 2];
1365 return (indxHi & 0xffffff00) | (indxLo & 0xff);
1367 private int readInt4(byte[] byteCodes, int offset) {
1368 final int d = byteCodes[offset + 0] << 24;
1369 final int c = byteCodes[offset + 1] << 16;
1370 final int b = byteCodes[offset + 2] << 8;
1371 final int a = byteCodes[offset + 3];
1372 return (d & 0xff000000) | (c & 0xff0000) | (b & 0xff00) | (a & 0xff);
1374 private int readUByte(byte[] byteCodes, int offset) {
1375 return byteCodes[offset] & 0xff;
1378 private int readUShort(byte[] byteCodes, int offset) {
1379 return ((byteCodes[offset] & 0xff) << 8)
1380 | (byteCodes[offset + 1] & 0xff);
1383 private int readShort(byte[] byteCodes, int offset) {
1384 return (byteCodes[offset] << 8)
1385 | (byteCodes[offset + 1] & 0xff);
1388 private static void countArgs(String descriptor, char[] returnType, StringBuilder sig, StringBuilder cnt) {
1390 Boolean count = null;
1391 boolean array = false;
1393 int firstPos = sig.length();
1394 while (i < descriptor.length()) {
1395 char ch = descriptor.charAt(i++);
1416 if (ch == 'J' || ch == 'D') {
1422 sig.insert(firstPos, ch);
1424 returnType[0] = '[';
1425 sig.insert(firstPos, "_3");
1434 returnType[0] = 'V';
1435 sig.insert(firstPos, 'V');
1438 int next = descriptor.indexOf(';', i);
1439 String realSig = mangleSig(descriptor, i - 1, next + 1);
1444 sig.append(realSig);
1447 sig.insert(firstPos, realSig);
1449 sig.insert(firstPos, "_3");
1451 returnType[0] = 'L';
1460 throw new IllegalStateException("Invalid char: " + ch);
1465 static String mangleSig(String sig) {
1466 return mangleSig(sig, 0, sig.length());
1469 private static String mangleSig(String txt, int first, int last) {
1470 StringBuilder sb = new StringBuilder();
1471 for (int i = first; i < last; i++) {
1472 final char ch = txt.charAt(i);
1474 case '/': sb.append('_'); break;
1475 case '_': sb.append("_1"); break;
1476 case ';': sb.append("_2"); break;
1477 case '[': sb.append("_3"); break;
1478 default: sb.append(ch); break;
1481 return sb.toString();
1484 private static String findMethodName(MethodData m, StringBuilder cnt) {
1485 StringBuilder name = new StringBuilder();
1486 if ("<init>".equals(m.getName())) { // NOI18N
1487 name.append("cons"); // NOI18N
1488 } else if ("<clinit>".equals(m.getName())) { // NOI18N
1489 name.append("class"); // NOI18N
1491 name.append(m.getName());
1494 countArgs(m.getInternalSig(), new char[1], name, cnt);
1495 return name.toString();
1498 static String findMethodName(String[] mi, StringBuilder cnt, char[] returnType) {
1499 StringBuilder name = new StringBuilder();
1500 String descr = mi[2];//mi.getDescriptor();
1502 if ("<init>".equals(nm)) { // NOI18N
1503 name.append("cons"); // NOI18N
1507 countArgs(descr, returnType, name, cnt);
1508 return name.toString();
1511 private int invokeStaticMethod(byte[] byteCodes, int i, final StackMapper mapper, boolean isStatic)
1512 throws IOException {
1513 int methodIndex = readIntArg(byteCodes, i);
1514 String[] mi = jc.getFieldInfoName(methodIndex);
1515 char[] returnType = { 'V' };
1516 StringBuilder cnt = new StringBuilder();
1517 String mn = findMethodName(mi, cnt, returnType);
1519 final int numArguments = isStatic ? cnt.length() : cnt.length() + 1;
1520 final Variable[] vars = new Variable[numArguments];
1522 for (int j = numArguments - 1; j >= 0; --j) {
1523 vars[j] = mapper.pop();
1526 if (returnType[0] != 'V') {
1528 .append(mapper.pushT(VarType.fromFieldType(returnType[0])))
1532 final String in = mi[0];
1533 out.append(accessClass(in.replace('/', '_')));
1534 out.append("(false).");
1535 if (mn.startsWith("cons_")) {
1536 out.append("constructor.");
1542 out.append(".call(");
1544 if (numArguments > 0) {
1545 out.append(vars[0]);
1546 for (int j = 1; j < numArguments; ++j) {
1548 out.append(vars[j]);
1556 private int invokeVirtualMethod(byte[] byteCodes, int i, final StackMapper mapper)
1557 throws IOException {
1558 int methodIndex = readIntArg(byteCodes, i);
1559 String[] mi = jc.getFieldInfoName(methodIndex);
1560 char[] returnType = { 'V' };
1561 StringBuilder cnt = new StringBuilder();
1562 String mn = findMethodName(mi, cnt, returnType);
1564 final int numArguments = cnt.length() + 1;
1565 final Variable[] vars = new Variable[numArguments];
1567 for (int j = numArguments - 1; j >= 0; --j) {
1568 vars[j] = mapper.pop();
1571 if (returnType[0] != 'V') {
1573 .append(mapper.pushT(VarType.fromFieldType(returnType[0])))
1577 out.append(vars[0]).append('.');
1581 for (int j = 1; j < numArguments; ++j) {
1583 out.append(vars[j]);
1591 private void addReference(String cn) throws IOException {
1592 if (requireReference(cn)) {
1593 debug(" /* needs " + cn + " */");
1597 private void outType(String d, StringBuilder out) {
1599 while (d.charAt(0) == '[') {
1603 if (d.charAt(0) == 'L') {
1604 assert d.charAt(d.length() - 1) == ';';
1605 out.append(d.replace('/', '_').substring(0, d.length() - 1));
1611 private String encodeConstant(int entryIndex) throws IOException {
1612 String[] classRef = { null };
1613 String s = jc.stringValue(entryIndex, classRef);
1614 if (classRef[0] != null) {
1615 if (classRef[0].startsWith("[")) {
1616 s = accessClass("java_lang_Class") + "(false).forName__Ljava_lang_Class_2Ljava_lang_String_2('" + classRef[0] + "');";
1618 addReference(classRef[0]);
1619 s = accessClass(s.replace('/', '_')) + "(false).constructor.$class";
1625 private String javaScriptBody(String prefix, MethodData m, boolean isStatic) throws IOException {
1626 byte[] arr = m.findAnnotationData(true);
1630 final String jvmType = "Lorg/apidesign/bck2brwsr/core/JavaScriptBody;";
1631 class P extends AnnotationParser {
1637 String[] args = new String[30];
1641 protected void visitAttr(String type, String attr, String at, String value) {
1642 if (type.equals(jvmType)) {
1643 if ("body".equals(attr)) {
1645 } else if ("args".equals(attr)) {
1646 args[cnt++] = value;
1648 throw new IllegalArgumentException(attr);
1655 if (p.body == null) {
1658 StringBuilder cnt = new StringBuilder();
1659 final String mn = findMethodName(m, cnt);
1660 out.append(prefix).append(mn);
1661 out.append(" = function(");
1664 for (int i = 0; i < cnt.length(); i++) {
1666 space = outputArg(out, p.args, index);
1669 out.append(") {").append("\n");
1671 out.append("\n}\n");
1674 private static String className(ClassData jc) {
1675 //return jc.getName().getInternalName().replace('/', '_');
1676 return jc.getClassName().replace('/', '_');
1679 private static String[] findAnnotation(
1680 byte[] arr, ClassData cd, final String className,
1681 final String... attrNames
1682 ) throws IOException {
1686 final String[] values = new String[attrNames.length];
1687 final boolean[] found = { false };
1688 final String jvmType = "L" + className.replace('.', '/') + ";";
1689 AnnotationParser ap = new AnnotationParser(false, true) {
1691 protected void visitAttr(String type, String attr, String at, String value) {
1692 if (type.equals(jvmType)) {
1694 for (int i = 0; i < attrNames.length; i++) {
1695 if (attrNames[i].equals(attr)) {
1704 return found[0] ? values : null;
1707 private CharSequence initField(FieldData v) {
1708 final String is = v.getInternalSig();
1709 if (is.length() == 1) {
1710 switch (is.charAt(0)) {
1716 case 'I': return " = 0;";
1718 case 'D': return " = 0.0;";
1720 throw new IllegalStateException(is);
1726 private void generateAnno(ClassData cd, final Appendable out, byte[] data) throws IOException {
1727 AnnotationParser ap = new AnnotationParser(true, false) {
1728 int[] cnt = new int[32];
1732 protected void visitAnnotationStart(String attrType, boolean top) throws IOException {
1733 final String slashType = attrType.substring(1, attrType.length() - 1);
1734 requireReference(slashType);
1736 if (cnt[depth]++ > 0) {
1740 out.append('"').append(attrType).append("\" : ");
1747 protected void visitAnnotationEnd(String type, boolean top) throws IOException {
1748 out.append("\n}\n");
1753 protected void visitValueStart(String attrName, char type) throws IOException {
1754 if (cnt[depth]++ > 0) {
1758 if (attrName != null) {
1759 out.append(attrName).append(" : ");
1767 protected void visitValueEnd(String attrName, char type) throws IOException {
1775 protected void visitAttr(String type, String attr, String attrType, String value)
1776 throws IOException {
1777 if (attr == null && value == null) {
1784 protected void visitEnumAttr(String type, String attr, String attrType, String value)
1785 throws IOException {
1786 final String slashType = attrType.substring(1, attrType.length() - 1);
1787 requireReference(slashType);
1789 out.append(accessClass(slashType.replace('/', '_')))
1790 .append("(false).constructor.").append(value);
1796 private static String outputArg(Appendable out, String[] args, int indx) throws IOException {
1797 final String name = args[indx];
1801 if (name.contains(",")) {
1802 throw new IOException("Wrong parameter with ',': " + name);
1808 private static void emit(final Appendable out,
1809 final String format,
1810 final CharSequence... params) throws IOException {
1811 final int length = format.length();
1814 int paramOffset = format.indexOf('@');
1815 while ((paramOffset != -1) && (paramOffset < (length - 1))) {
1816 final char paramChar = format.charAt(paramOffset + 1);
1817 if ((paramChar >= '1') && (paramChar <= '9')) {
1818 final int paramIndex = paramChar - '0' - 1;
1820 out.append(format, processed, paramOffset);
1821 out.append(params[paramIndex]);
1824 processed = paramOffset + 1;
1827 paramOffset = format.indexOf('@', paramOffset + 1);
1830 out.append(format, processed, length);
1833 private void generateCatch(TrapData[] traps, int current) throws IOException {
1834 out.append("} catch (e) {\n");
1836 for (TrapData e : traps) {
1840 if (e.catch_cpx != 0) { //not finally
1841 final String classInternalName = jc.getClassName(e.catch_cpx);
1842 addReference(classInternalName);
1843 if ("java/lang/Throwable".equals(classInternalName)) {
1844 out.append("if (e.$instOf_java_lang_Throwable) {");
1845 out.append(" var stA0 = e;");
1846 out.append("} else {");
1847 out.append(" var stA0 = vm.java_lang_Throwable(true);");
1848 out.append(" vm.java_lang_Throwable.cons__VLjava_lang_String_2.call(stA0, e.toString());");
1850 goTo(out, current, e.handler_pc);
1852 out.append("if (e.$instOf_" + classInternalName.replace('/', '_') + ") {");
1853 out.append("var stA0 = e;");
1854 goTo(out, current, e.handler_pc);
1858 finallyPC = e.handler_pc;
1861 if (finallyPC == -1) {
1862 out.append("throw e;");
1864 out.append("var stA0 = e;");
1865 goTo(out, current, finallyPC);
1870 private static void goTo(Appendable out, int current, int to) throws IOException {
1872 out.append("{ gt = 0; continue X_" + to + "; }");
1874 out.append("{ gt = " + to + "; break IF; }");
1878 private static void emitIf(Appendable out, String pattern, Variable param, int current, int to) throws IOException {
1879 emit(out, pattern, param);
1880 goTo(out, current, to);