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.$class) {");
118 String sc = jc.getSuperClassName(); // with _
119 out.append("\n var pp = ").
120 append(accessClass(sc.replace('/', '_'))).append("(true);");
121 out.append("\n var p = CLS.prototype = pp;");
122 out.append("\n var c = p;");
123 out.append("\n var sprcls = pp.constructor.$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(";");
178 out.append(prefix).append(mn).append(".cls = CLS;");
180 out.append("\n c.constructor = CLS;");
181 out.append("\n c.$instOf_").append(className).append(" = true;");
182 for (String superInterface : jc.getSuperInterfaces()) {
183 out.append("\n c.$instOf_").append(superInterface.replace('/', '_')).append(" = true;");
185 out.append("\n CLS.$class = 'temp';");
186 out.append("\n CLS.$class = ");
187 out.append(accessClass("java_lang_Class(true);"));
188 out.append("\n CLS.$class.jvmName = '").append(jc.getClassName()).append("';");
189 out.append("\n CLS.$class.superclass = sprcls;");
190 out.append("\n CLS.$class.access = ").append(jc.getAccessFlags()+";");
191 out.append("\n CLS.$class.cnstr = CLS;");
192 byte[] classAnno = jc.findAnnotationData(false);
193 if (classAnno != null) {
194 out.append("\n CLS.$class.anno = {");
195 generateAnno(jc, out, classAnno);
199 out.append("\n if (arguments.length === 0) {");
200 out.append("\n if (!(this instanceof CLS)) {");
201 out.append("\n return new CLS();");
203 for (FieldData v : jc.getFields()) {
204 byte[] onlyArr = v.findAnnotationData(true);
205 String[] only = findAnnotation(onlyArr, jc,
206 "org.apidesign.bck2brwsr.core.JavaScriptOnly",
210 if (only[0] != null && only[1] != null) {
211 out.append("\n p.").append(only[0]).append(" = ")
212 .append(only[1]).append(";");
217 out.append("\n this.fld_").
218 append(className).append('_').
219 append(v.getName()).append(initField(v));
222 out.append("\n return this;");
224 out.append("\n return arguments[0] ? new CLS() : CLS.prototype;");
226 StringBuilder sb = new StringBuilder();
227 for (String init : toInitilize.toArray()) {
228 sb.append("\n").append(init).append("();");
230 return sb.toString();
232 private String generateStaticMethod(String prefix, MethodData m, StringArray toInitilize) throws IOException {
233 String jsb = javaScriptBody(prefix, m, true);
237 final String mn = findMethodName(m, new StringBuilder());
238 if (mn.equals("class__V")) {
239 toInitilize.add(accessClass(className(jc)) + "(false)." + mn);
241 generateMethod(prefix, mn, m);
245 private String generateInstanceMethod(String prefix, MethodData m) throws IOException {
246 String jsb = javaScriptBody(prefix, m, false);
250 final String mn = findMethodName(m, new StringBuilder());
251 generateMethod(prefix, mn, m);
255 private void generateMethod(String prefix, String name, MethodData m)
257 final StackMapIterator stackMapIterator = m.createStackMapIterator();
258 TrapDataIterator trap = m.getTrapDataIterator();
259 final LocalsMapper lmapper =
260 new LocalsMapper(stackMapIterator.getArguments());
262 out.append(prefix).append(name).append(" = function(");
263 lmapper.outputArguments(out, m.isStatic());
264 out.append(") {").append("\n");
266 final byte[] byteCodes = m.getCode();
267 if (byteCodes == null) {
268 out.append(" throw 'no code found for ")
269 .append(jc.getClassName()).append('.')
270 .append(m.getName()).append("';\n");
275 final StackMapper smapper = new StackMapper();
278 out.append(" var ").append(" lcA0 = this;\n");
281 int lastStackFrame = -1;
282 TrapData[] previousTrap = null;
283 boolean wide = false;
285 out.append("\n var gt = 0;\n for(;;) switch(gt) {\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);
296 if (lastStackFrame != stackMapIterator.getFrameIndex()) {
297 lastStackFrame = stackMapIterator.getFrameIndex();
298 lmapper.syncWithFrameLocals(stackMapIterator.getFrameLocals());
299 smapper.syncWithFrameStack(stackMapIterator.getFrameStack());
300 out.append(" case " + i).append(": ");
301 changeInCatch = true;
303 debug(" /* " + i + " */ ");
305 if (changeInCatch && trap.useTry()) {
307 previousTrap = trap.current();
309 final int c = readUByte(byteCodes, i);
312 emit(out, "var @1 = @2;", smapper.pushA(), lmapper.getA(0));
315 emit(out, "var @1 = @2;", smapper.pushI(), lmapper.getI(0));
318 emit(out, "var @1 = @2;", smapper.pushL(), lmapper.getL(0));
321 emit(out, "var @1 = @2;", smapper.pushF(), lmapper.getF(0));
324 emit(out, "var @1 = @2;", smapper.pushD(), lmapper.getD(0));
327 emit(out, "var @1 = @2;", smapper.pushA(), lmapper.getA(1));
330 emit(out, "var @1 = @2;", smapper.pushI(), lmapper.getI(1));
333 emit(out, "var @1 = @2;", smapper.pushL(), lmapper.getL(1));
336 emit(out, "var @1 = @2;", smapper.pushF(), lmapper.getF(1));
339 emit(out, "var @1 = @2;", smapper.pushD(), lmapper.getD(1));
342 emit(out, "var @1 = @2;", smapper.pushA(), lmapper.getA(2));
345 emit(out, "var @1 = @2;", smapper.pushI(), lmapper.getI(2));
348 emit(out, "var @1 = @2;", smapper.pushL(), lmapper.getL(2));
351 emit(out, "var @1 = @2;", smapper.pushF(), lmapper.getF(2));
354 emit(out, "var @1 = @2;", smapper.pushD(), lmapper.getD(2));
357 emit(out, "var @1 = @2;", smapper.pushA(), lmapper.getA(3));
360 emit(out, "var @1 = @2;", smapper.pushI(), lmapper.getI(3));
363 emit(out, "var @1 = @2;", smapper.pushL(), lmapper.getL(3));
366 emit(out, "var @1 = @2;", smapper.pushF(), lmapper.getF(3));
369 emit(out, "var @1 = @2;", smapper.pushD(), lmapper.getD(3));
373 final int indx = wide ? readUShort(byteCodes, i++)
374 : readUByte(byteCodes, i);
376 emit(out, "var @1 = @2;",
377 smapper.pushI(), lmapper.getI(indx));
382 final int indx = wide ? readUShort(byteCodes, i++)
383 : readUByte(byteCodes, i);
385 emit(out, "var @1 = @2;",
386 smapper.pushL(), lmapper.getL(indx));
391 final int indx = wide ? readUShort(byteCodes, i++)
392 : readUByte(byteCodes, i);
394 emit(out, "var @1 = @2;",
395 smapper.pushF(), lmapper.getF(indx));
400 final int indx = wide ? readUShort(byteCodes, i++)
401 : readUByte(byteCodes, i);
403 emit(out, "var @1 = @2;",
404 smapper.pushD(), lmapper.getD(indx));
409 final int indx = wide ? readUShort(byteCodes, i++)
410 : readUByte(byteCodes, i);
412 emit(out, "var @1 = @2;",
413 smapper.pushA(), lmapper.getA(indx));
418 final int indx = wide ? readUShort(byteCodes, i++)
419 : readUByte(byteCodes, i);
421 emit(out, "var @1 = @2;",
422 lmapper.setI(indx), smapper.popI());
427 final int indx = wide ? readUShort(byteCodes, i++)
428 : readUByte(byteCodes, i);
430 emit(out, "var @1 = @2;",
431 lmapper.setL(indx), smapper.popL());
436 final int indx = wide ? readUShort(byteCodes, i++)
437 : readUByte(byteCodes, i);
439 emit(out, "var @1 = @2;",
440 lmapper.setF(indx), smapper.popF());
445 final int indx = wide ? readUShort(byteCodes, i++)
446 : readUByte(byteCodes, i);
448 emit(out, "var @1 = @2;",
449 lmapper.setD(indx), smapper.popD());
454 final int indx = wide ? readUShort(byteCodes, i++)
455 : readUByte(byteCodes, i);
457 emit(out, "var @1 = @2;",
458 lmapper.setA(indx), smapper.popA());
462 emit(out, "var @1 = @2;", lmapper.setA(0), smapper.popA());
465 emit(out, "var @1 = @2;", lmapper.setI(0), smapper.popI());
468 emit(out, "var @1 = @2;", lmapper.setL(0), smapper.popL());
471 emit(out, "var @1 = @2;", lmapper.setF(0), smapper.popF());
474 emit(out, "var @1 = @2;", lmapper.setD(0), smapper.popD());
477 emit(out, "var @1 = @2;", lmapper.setA(1), smapper.popA());
480 emit(out, "var @1 = @2;", lmapper.setI(1), smapper.popI());
483 emit(out, "var @1 = @2;", lmapper.setL(1), smapper.popL());
486 emit(out, "var @1 = @2;", lmapper.setF(1), smapper.popF());
489 emit(out, "var @1 = @2;", lmapper.setD(1), smapper.popD());
492 emit(out, "var @1 = @2;", lmapper.setA(2), smapper.popA());
495 emit(out, "var @1 = @2;", lmapper.setI(2), smapper.popI());
498 emit(out, "var @1 = @2;", lmapper.setL(2), smapper.popL());
501 emit(out, "var @1 = @2;", lmapper.setF(2), smapper.popF());
504 emit(out, "var @1 = @2;", lmapper.setD(2), smapper.popD());
507 emit(out, "var @1 = @2;", lmapper.setA(3), smapper.popA());
510 emit(out, "var @1 = @2;", lmapper.setI(3), smapper.popI());
513 emit(out, "var @1 = @2;", lmapper.setL(3), smapper.popL());
516 emit(out, "var @1 = @2;", lmapper.setF(3), smapper.popF());
519 emit(out, "var @1 = @2;", lmapper.setD(3), smapper.popD());
522 emit(out, "@1 = @1.add32(@2);", smapper.getI(1), smapper.popI());
525 emit(out, "@1 = @1.add64(@2);", smapper.getL(1), smapper.popL());
528 emit(out, "@1 += @2;", smapper.getF(1), smapper.popF());
531 emit(out, "@1 += @2;", smapper.getD(1), smapper.popD());
534 emit(out, "@1 = @1.sub32(@2);", smapper.getI(1), smapper.popI());
537 emit(out, "@1 = @1.sub64(@2);", smapper.getL(1), smapper.popL());
540 emit(out, "@1 -= @2;", smapper.getF(1), smapper.popF());
543 emit(out, "@1 -= @2;", smapper.getD(1), smapper.popD());
546 emit(out, "@1 = @1.mul32(@2);", smapper.getI(1), smapper.popI());
549 emit(out, "@1 = @1.mul64(@2);", smapper.getL(1), smapper.popL());
552 emit(out, "@1 *= @2;", smapper.getF(1), smapper.popF());
555 emit(out, "@1 *= @2;", smapper.getD(1), smapper.popD());
558 emit(out, "@1 = Math.floor(@1 / @2);",
559 smapper.getI(1), smapper.popI());
562 emit(out, "@1 = @1.div64(@2);",
563 smapper.getL(1), smapper.popL());
566 emit(out, "@1 /= @2;", smapper.getF(1), smapper.popF());
569 emit(out, "@1 /= @2;", smapper.getD(1), smapper.popD());
572 emit(out, "@1 %= @2;", smapper.getI(1), smapper.popI());
575 emit(out, "@1 = @1.mod64(@2);",
576 smapper.getL(1), smapper.popL());
579 emit(out, "@1 %= @2;", smapper.getF(1), smapper.popF());
582 emit(out, "@1 %= @2;", smapper.getD(1), smapper.popD());
585 emit(out, "@1 &= @2;", smapper.getI(1), smapper.popI());
588 emit(out, "@1 = @1.and64(@2);", smapper.getL(1), smapper.popL());
591 emit(out, "@1 |= @2;", smapper.getI(1), smapper.popI());
594 emit(out, "@1 = @1.or64(@2);", smapper.getL(1), smapper.popL());
597 emit(out, "@1 ^= @2;", smapper.getI(1), smapper.popI());
600 emit(out, "@1 = @1.xor64(@2);", smapper.getL(1), smapper.popL());
603 emit(out, "@1 = @1.neg32();", smapper.getI(0));
606 emit(out, "@1 = @1.neg64();", smapper.getL(0));
609 emit(out, "@1 = -@1;", smapper.getF(0));
612 emit(out, "@1 = -@1;", smapper.getD(0));
615 emit(out, "@1 <<= @2;", smapper.getI(1), smapper.popI());
618 emit(out, "@1 = @1.shl64(@2);", smapper.getL(1), smapper.popI());
621 emit(out, "@1 >>= @2;", smapper.getI(1), smapper.popI());
624 emit(out, "@1 = @1.shr64(@2);", smapper.getL(1), smapper.popI());
627 emit(out, "@1 >>>= @2;", smapper.getI(1), smapper.popI());
630 emit(out, "@1 = @1.ushr64(@2);", smapper.getL(1), smapper.popI());
634 final int varIndx = wide ? readUShort(byteCodes, i++)
635 : readUByte(byteCodes, i);
637 final int incrBy = wide ? readShort(byteCodes, i++)
641 emit(out, "@1++;", lmapper.getI(varIndx));
643 emit(out, "@1 += @2;",
644 lmapper.getI(varIndx),
645 Integer.toString(incrBy));
650 emit(out, "return;");
653 emit(out, "return @1;", smapper.popI());
656 emit(out, "return @1;", smapper.popL());
659 emit(out, "return @1;", smapper.popF());
662 emit(out, "return @1;", smapper.popD());
665 emit(out, "return @1;", smapper.popA());
668 emit(out, "var @2 = @1;", smapper.popI(), smapper.pushL());
671 emit(out, "var @2 = @1;", smapper.popI(), smapper.pushF());
674 emit(out, "var @2 = @1;", smapper.popI(), smapper.pushD());
677 emit(out, "var @2 = @1.toInt32();", smapper.popL(), smapper.pushI());
681 emit(out, "var @2 = @1.toFP();", smapper.popL(), smapper.pushF());
684 emit(out, "var @2 = @1.toFP();", smapper.popL(), smapper.pushD());
687 emit(out, "var @2 = @1;", smapper.popF(), smapper.pushD());
690 emit(out, "var @2 = @1;", smapper.popD(), smapper.pushF());
693 emit(out, "var @2 = Math.floor(@1);",
694 smapper.popF(), smapper.pushI());
697 emit(out, "var @2 = Math.floor(@1).toLong();",
698 smapper.popF(), smapper.pushL());
701 emit(out, "var @2 = Math.floor(@1);",
702 smapper.popD(), smapper.pushI());
705 emit(out, "var @2 = Math.floor(@1).toLong();",
706 smapper.popD(), smapper.pushL());
709 emit(out, "var @1 = @1.toInt8();", smapper.getI(0));
712 out.append("{ /* number conversion */ }");
715 emit(out, "var @1 = @1.toInt16();", smapper.getI(0));
717 case opc_aconst_null:
718 emit(out, "var @1 = null;", smapper.pushA());
721 emit(out, "var @1 = -1;", smapper.pushI());
724 emit(out, "var @1 = 0;", smapper.pushI());
727 emit(out, "var @1 = 0;", smapper.pushD());
730 emit(out, "var @1 = 0;", smapper.pushL());
733 emit(out, "var @1 = 0;", smapper.pushF());
736 emit(out, "var @1 = 1;", smapper.pushI());
739 emit(out, "var @1 = 1;", smapper.pushL());
742 emit(out, "var @1 = 1;", smapper.pushF());
745 emit(out, "var @1 = 1;", smapper.pushD());
748 emit(out, "var @1 = 2;", smapper.pushI());
751 emit(out, "var @1 = 2;", smapper.pushF());
754 emit(out, "var @1 = 3;", smapper.pushI());
757 emit(out, "var @1 = 4;", smapper.pushI());
760 emit(out, "var @1 = 5;", smapper.pushI());
763 int indx = readUByte(byteCodes, ++i);
764 String v = encodeConstant(indx);
765 int type = VarType.fromConstantType(jc.getTag(indx));
766 emit(out, "var @1 = @2;", smapper.pushT(type), v);
771 int indx = readIntArg(byteCodes, i);
773 String v = encodeConstant(indx);
774 int type = VarType.fromConstantType(jc.getTag(indx));
775 if (type == VarType.LONG) {
776 final Long lv = new Long(v);
777 final int low = (int)(lv.longValue() & 0xFFFFFFFF);
778 final int hi = (int)(lv.longValue() >> 32);
779 emit(out, "var @1 = 0x@3.next32(0x@2);", smapper.pushL(),
780 Integer.toHexString(low), Integer.toHexString(hi));
782 emit(out, "var @1 = @2;", smapper.pushT(type), v);
787 emit(out, "var @3 = @2.compare64(@1);",
788 smapper.popL(), smapper.popL(), smapper.pushI());
792 emit(out, "var @3 = (@2 == @1) ? 0 : ((@2 < @1) ? -1 : 1);",
793 smapper.popF(), smapper.popF(), smapper.pushI());
797 emit(out, "var @3 = (@2 == @1) ? 0 : ((@2 < @1) ? -1 : 1);",
798 smapper.popD(), smapper.popD(), smapper.pushI());
801 i = generateIf(byteCodes, i, smapper.popA(), smapper.popA(),
805 i = generateIf(byteCodes, i, smapper.popA(), smapper.popA(),
809 i = generateIf(byteCodes, i, smapper.popI(), smapper.popI(),
813 int indx = i + readIntArg(byteCodes, i);
814 emit(out, "if (@1 == 0) { gt = @2; continue; }",
815 smapper.popI(), Integer.toString(indx));
820 int indx = i + readIntArg(byteCodes, i);
821 emit(out, "if (@1 != 0) { gt = @2; continue; }",
822 smapper.popI(), Integer.toString(indx));
827 int indx = i + readIntArg(byteCodes, i);
828 emit(out, "if (@1 < 0) { gt = @2; continue; }",
829 smapper.popI(), Integer.toString(indx));
834 int indx = i + readIntArg(byteCodes, i);
835 emit(out, "if (@1 <= 0) { gt = @2; continue; }",
836 smapper.popI(), Integer.toString(indx));
841 int indx = i + readIntArg(byteCodes, i);
842 emit(out, "if (@1 > 0) { gt = @2; continue; }",
843 smapper.popI(), Integer.toString(indx));
848 int indx = i + readIntArg(byteCodes, i);
849 emit(out, "if (@1 >= 0) { gt = @2; continue; }",
850 smapper.popI(), Integer.toString(indx));
854 case opc_ifnonnull: {
855 int indx = i + readIntArg(byteCodes, i);
856 emit(out, "if (@1 !== null) { gt = @2; continue; }",
857 smapper.popA(), Integer.toString(indx));
862 int indx = i + readIntArg(byteCodes, i);
863 emit(out, "if (@1 === null) { gt = @2; continue; }",
864 smapper.popA(), Integer.toString(indx));
869 i = generateIf(byteCodes, i, smapper.popI(), smapper.popI(),
873 i = generateIf(byteCodes, i, smapper.popI(), smapper.popI(),
877 i = generateIf(byteCodes, i, smapper.popI(), smapper.popI(),
881 i = generateIf(byteCodes, i, smapper.popI(), smapper.popI(),
885 i = generateIf(byteCodes, i, smapper.popI(), smapper.popI(),
889 int indx = i + readIntArg(byteCodes, i);
890 emit(out, "gt = @1; continue;", Integer.toString(indx));
894 case opc_lookupswitch: {
895 int table = i / 4 * 4 + 4;
896 int dflt = i + readInt4(byteCodes, table);
898 int n = readInt4(byteCodes, table);
900 out.append("switch (").append(smapper.popI()).append(") {\n");
902 int cnstnt = readInt4(byteCodes, table);
904 int offset = i + readInt4(byteCodes, table);
906 out.append(" case " + cnstnt).append(": gt = " + offset).append("; continue;\n");
908 out.append(" default: gt = " + dflt).append("; continue;\n}");
912 case opc_tableswitch: {
913 int table = i / 4 * 4 + 4;
914 int dflt = i + readInt4(byteCodes, table);
916 int low = readInt4(byteCodes, table);
918 int high = readInt4(byteCodes, table);
920 out.append("switch (").append(smapper.popI()).append(") {\n");
921 while (low <= high) {
922 int offset = i + readInt4(byteCodes, table);
924 out.append(" case " + low).append(": gt = " + offset).append("; continue;\n");
927 out.append(" default: gt = " + dflt).append("; continue;\n}");
931 case opc_invokeinterface: {
932 i = invokeVirtualMethod(byteCodes, i, smapper) + 2;
935 case opc_invokevirtual:
936 i = invokeVirtualMethod(byteCodes, i, smapper);
938 case opc_invokespecial:
939 i = invokeStaticMethod(byteCodes, i, smapper, false);
941 case opc_invokestatic:
942 i = invokeStaticMethod(byteCodes, i, smapper, true);
945 int indx = readIntArg(byteCodes, i);
946 String ci = jc.getClassName(indx);
947 emit(out, "var @1 = new @2;",
948 smapper.pushA(), accessClass(ci.replace('/', '_')));
954 int atype = readUByte(byteCodes, ++i);
957 case 4: jvmType = "[Z"; break;
958 case 5: jvmType = "[C"; break;
959 case 6: jvmType = "[F"; break;
960 case 7: jvmType = "[D"; break;
961 case 8: jvmType = "[B"; break;
962 case 9: jvmType = "[S"; break;
963 case 10: jvmType = "[I"; break;
964 case 11: jvmType = "[J"; break;
965 default: throw new IllegalStateException("Array type: " + atype);
967 emit(out, "var @2 = Array.prototype.newArray__Ljava_lang_Object_2ZLjava_lang_String_2I(true, '@3', @1);",
968 smapper.popI(), smapper.pushA(), jvmType);
970 case opc_anewarray: {
971 int type = readIntArg(byteCodes, i);
973 String typeName = jc.getClassName(type);
974 if (typeName.startsWith("[")) {
975 typeName = "[" + typeName;
977 typeName = "[L" + typeName + ";";
979 emit(out, "var @2 = Array.prototype.newArray__Ljava_lang_Object_2ZLjava_lang_String_2I(false, '@3', @1);",
980 smapper.popI(), smapper.pushA(), typeName);
983 case opc_multianewarray: {
984 int type = readIntArg(byteCodes, i);
986 String typeName = jc.getClassName(type);
987 int dim = readUByte(byteCodes, ++i);
988 StringBuilder dims = new StringBuilder();
990 for (int d = 0; d < dim; d++) {
994 dims.append(smapper.popI());
997 emit(out, "var @2 = Array.prototype.multiNewArray__Ljava_lang_Object_2Ljava_lang_String_2_3II('@3', @1, 0);",
998 dims.toString(), smapper.pushA(), typeName);
1001 case opc_arraylength:
1002 emit(out, "var @2 = @1.length;",
1003 smapper.popA(), smapper.pushI());
1006 emit(out, "@3.at(@2, @1);",
1007 smapper.popL(), smapper.popI(), smapper.popA());
1010 emit(out, "@3.at(@2, @1);",
1011 smapper.popF(), smapper.popI(), smapper.popA());
1014 emit(out, "@3.at(@2, @1);",
1015 smapper.popD(), smapper.popI(), smapper.popA());
1018 emit(out, "@3.at(@2, @1);",
1019 smapper.popA(), smapper.popI(), smapper.popA());
1025 emit(out, "@3.at(@2, @1);",
1026 smapper.popI(), smapper.popI(), smapper.popA());
1029 emit(out, "var @3 = @2.at(@1);",
1030 smapper.popI(), smapper.popA(), smapper.pushL());
1033 emit(out, "var @3 = @2.at(@1);",
1034 smapper.popI(), smapper.popA(), smapper.pushF());
1037 emit(out, "var @3 = @2.at(@1);",
1038 smapper.popI(), smapper.popA(), smapper.pushD());
1041 emit(out, "var @3 = @2.at(@1);",
1042 smapper.popI(), smapper.popA(), smapper.pushA());
1048 emit(out, "var @3 = @2.at(@1);",
1049 smapper.popI(), smapper.popA(), smapper.pushI());
1057 final Variable v = smapper.get(0);
1058 emit(out, "var @1 = @2;", smapper.pushT(v.getType()), v);
1062 final Variable vi1 = smapper.get(0);
1064 if (vi1.isCategory2()) {
1065 emit(out, "var @1 = @2;",
1066 smapper.pushT(vi1.getType()), vi1);
1068 final Variable vi2 = smapper.get(1);
1069 emit(out, "var @1 = @2, @3 = @4;",
1070 smapper.pushT(vi2.getType()), vi2,
1071 smapper.pushT(vi1.getType()), vi1);
1076 final Variable vi1 = smapper.pop();
1077 final Variable vi2 = smapper.pop();
1078 final Variable vo3 = smapper.pushT(vi1.getType());
1079 final Variable vo2 = smapper.pushT(vi2.getType());
1080 final Variable vo1 = smapper.pushT(vi1.getType());
1082 emit(out, "var @1 = @2, @3 = @4, @5 = @6;",
1083 vo1, vi1, vo2, vi2, vo3, vo1);
1087 final Variable vi1 = smapper.pop();
1088 final Variable vi2 = smapper.pop();
1090 if (vi1.isCategory2()) {
1091 final Variable vo3 = smapper.pushT(vi1.getType());
1092 final Variable vo2 = smapper.pushT(vi2.getType());
1093 final Variable vo1 = smapper.pushT(vi1.getType());
1095 emit(out, "var @1 = @2, @3 = @4, @5 = @6;",
1096 vo1, vi1, vo2, vi2, vo3, vo1);
1098 final Variable vi3 = smapper.pop();
1099 final Variable vo5 = smapper.pushT(vi2.getType());
1100 final Variable vo4 = smapper.pushT(vi1.getType());
1101 final Variable vo3 = smapper.pushT(vi3.getType());
1102 final Variable vo2 = smapper.pushT(vi2.getType());
1103 final Variable vo1 = smapper.pushT(vi1.getType());
1105 emit(out, "var @1 = @2, @3 = @4, @5 = @6,",
1106 vo1, vi1, vo2, vi2, vo3, vi3);
1107 emit(out, " @1 = @2, @3 = @4;",
1108 vo4, vo1, vo5, vo2);
1113 final Variable vi1 = smapper.pop();
1114 final Variable vi2 = smapper.pop();
1116 if (vi2.isCategory2()) {
1117 final Variable vo3 = smapper.pushT(vi1.getType());
1118 final Variable vo2 = smapper.pushT(vi2.getType());
1119 final Variable vo1 = smapper.pushT(vi1.getType());
1121 emit(out, "var @1 = @2, @3 = @4, @5 = @6;",
1122 vo1, vi1, vo2, vi2, vo3, vo1);
1124 final Variable vi3 = smapper.pop();
1125 final Variable vo4 = smapper.pushT(vi1.getType());
1126 final Variable vo3 = smapper.pushT(vi3.getType());
1127 final Variable vo2 = smapper.pushT(vi2.getType());
1128 final Variable vo1 = smapper.pushT(vi1.getType());
1130 emit(out, "var @1 = @2, @3 = @4, @5 = @6, @7 = @8;",
1131 vo1, vi1, vo2, vi2, vo3, vi3, vo4, vo1);
1136 final Variable vi1 = smapper.pop();
1137 final Variable vi2 = smapper.pop();
1139 if (vi1.isCategory2()) {
1140 if (vi2.isCategory2()) {
1141 final Variable vo3 = smapper.pushT(vi1.getType());
1142 final Variable vo2 = smapper.pushT(vi2.getType());
1143 final Variable vo1 = smapper.pushT(vi1.getType());
1145 emit(out, "var @1 = @2, @3 = @4, @5 = @6;",
1146 vo1, vi1, vo2, vi2, vo3, vo1);
1148 final Variable vi3 = smapper.pop();
1149 final Variable vo4 = smapper.pushT(vi1.getType());
1150 final Variable vo3 = smapper.pushT(vi3.getType());
1151 final Variable vo2 = smapper.pushT(vi2.getType());
1152 final Variable vo1 = smapper.pushT(vi1.getType());
1154 emit(out, "var @1 = @2, @3 = @4, @5 = @6, @7 = @8;",
1155 vo1, vi1, vo2, vi2, vo3, vi3, vo4, vo1);
1158 final Variable vi3 = smapper.pop();
1160 if (vi3.isCategory2()) {
1161 final Variable vo5 = smapper.pushT(vi2.getType());
1162 final Variable vo4 = smapper.pushT(vi1.getType());
1163 final Variable vo3 = smapper.pushT(vi3.getType());
1164 final Variable vo2 = smapper.pushT(vi2.getType());
1165 final Variable vo1 = smapper.pushT(vi1.getType());
1167 emit(out, "var @1 = @2, @3 = @4, @5 = @6,",
1168 vo1, vi1, vo2, vi2, vo3, vi3);
1169 emit(out, " @1 = @2, @3 = @4;",
1170 vo4, vo1, vo5, vo2);
1172 final Variable vi4 = smapper.pop();
1173 final Variable vo6 = smapper.pushT(vi2.getType());
1174 final Variable vo5 = smapper.pushT(vi1.getType());
1175 final Variable vo4 = smapper.pushT(vi4.getType());
1176 final Variable vo3 = smapper.pushT(vi3.getType());
1177 final Variable vo2 = smapper.pushT(vi2.getType());
1178 final Variable vo1 = smapper.pushT(vi1.getType());
1180 emit(out, "var @1 = @2, @3 = @4, @5 = @6, @7 = @8,",
1181 vo1, vi1, vo2, vi2, vo3, vi3, vo4, vi4);
1182 emit(out, " @1 = @2, @3 = @4;",
1183 vo5, vo1, vo6, vo2);
1189 final Variable vi1 = smapper.get(0);
1190 final Variable vi2 = smapper.get(1);
1192 if (vi1.getType() == vi2.getType()) {
1193 final Variable tmp = smapper.pushT(vi1.getType());
1195 emit(out, "var @1 = @2, @2 = @3, @3 = @1;",
1200 smapper.pushT(vi1.getType());
1201 smapper.pushT(vi2.getType());
1206 emit(out, "var @1 = @2;",
1207 smapper.pushI(), Integer.toString(byteCodes[++i]));
1210 emit(out, "var @1 = @2;",
1212 Integer.toString(readIntArg(byteCodes, i)));
1215 case opc_getfield: {
1216 int indx = readIntArg(byteCodes, i);
1217 String[] fi = jc.getFieldInfoName(indx);
1218 final int type = VarType.fromFieldType(fi[2].charAt(0));
1219 final String mangleClass = mangleSig(fi[0]);
1220 final String mangleClassAccess = accessClass(mangleClass);
1221 emit(out, "var @2 = @4(false)._@3.call(@1);",
1223 smapper.pushT(type), fi[1], mangleClassAccess
1228 case opc_putfield: {
1229 int indx = readIntArg(byteCodes, i);
1230 String[] fi = jc.getFieldInfoName(indx);
1231 final int type = VarType.fromFieldType(fi[2].charAt(0));
1232 final String mangleClass = mangleSig(fi[0]);
1233 final String mangleClassAccess = accessClass(mangleClass);
1234 emit(out, "@4(false)._@3.call(@2, @1);",
1236 smapper.popA(), fi[1],
1242 case opc_getstatic: {
1243 int indx = readIntArg(byteCodes, i);
1244 String[] fi = jc.getFieldInfoName(indx);
1245 final int type = VarType.fromFieldType(fi[2].charAt(0));
1246 emit(out, "var @1 = @2(false).constructor.@3;",
1247 smapper.pushT(type),
1248 accessClass(fi[0].replace('/', '_')), fi[1]);
1250 addReference(fi[0]);
1253 case opc_putstatic: {
1254 int indx = readIntArg(byteCodes, i);
1255 String[] fi = jc.getFieldInfoName(indx);
1256 final int type = VarType.fromFieldType(fi[2].charAt(0));
1257 emit(out, "@1(false).constructor.@2 = @3;",
1258 accessClass(fi[0].replace('/', '_')), fi[1],
1259 smapper.popT(type));
1261 addReference(fi[0]);
1264 case opc_checkcast: {
1265 int indx = readIntArg(byteCodes, i);
1266 final String type = jc.getClassName(indx);
1267 if (!type.startsWith("[")) {
1269 "if (@1 !== null && !@1.$instOf_@2) throw {};",
1270 smapper.getA(0), type.replace('/', '_'));
1272 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);",
1273 smapper.getA(0), type
1279 case opc_instanceof: {
1280 int indx = readIntArg(byteCodes, i);
1281 final String type = jc.getClassName(indx);
1282 if (!type.startsWith("[")) {
1283 emit(out, "var @2 = @1 != null && @1.$instOf_@3 ? 1 : 0;",
1284 smapper.popA(), smapper.pushI(),
1285 type.replace('/', '_'));
1287 emit(out, "var @2 = vm.java_lang_Class(false).forName__Ljava_lang_Class_2Ljava_lang_String_2('@3').isInstance__ZLjava_lang_Object_2(@1);",
1288 smapper.popA(), smapper.pushI(),
1296 final Variable v = smapper.popA();
1299 emit(out, "{ var @1 = @2; throw @2; }",
1300 smapper.pushA(), v);
1304 case opc_monitorenter: {
1305 out.append("/* monitor enter */");
1310 case opc_monitorexit: {
1311 out.append("/* monitor exit */");
1322 emit(out, "throw 'unknown bytecode @1';",
1323 Integer.toString(c));
1327 for (int j = prev; j <= i; j++) {
1329 final int cc = readUByte(byteCodes, j);
1330 out.append(Integer.toString(cc));
1335 if (previousTrap != null) {
1336 generateCatch(previousTrap);
1342 private int generateIf(byte[] byteCodes, int i,
1343 final Variable v2, final Variable v1,
1344 final String test) throws IOException {
1345 int indx = i + readIntArg(byteCodes, i);
1346 out.append("if (").append(v1)
1347 .append(' ').append(test).append(' ')
1348 .append(v2).append(") { gt = " + indx)
1349 .append("; continue; }");
1353 private int readIntArg(byte[] byteCodes, int offsetInstruction) {
1354 final int indxHi = byteCodes[offsetInstruction + 1] << 8;
1355 final int indxLo = byteCodes[offsetInstruction + 2];
1356 return (indxHi & 0xffffff00) | (indxLo & 0xff);
1358 private int readInt4(byte[] byteCodes, int offset) {
1359 final int d = byteCodes[offset + 0] << 24;
1360 final int c = byteCodes[offset + 1] << 16;
1361 final int b = byteCodes[offset + 2] << 8;
1362 final int a = byteCodes[offset + 3];
1363 return (d & 0xff000000) | (c & 0xff0000) | (b & 0xff00) | (a & 0xff);
1365 private int readUByte(byte[] byteCodes, int offset) {
1366 return byteCodes[offset] & 0xff;
1369 private int readUShort(byte[] byteCodes, int offset) {
1370 return ((byteCodes[offset] & 0xff) << 8)
1371 | (byteCodes[offset + 1] & 0xff);
1374 private int readShort(byte[] byteCodes, int offset) {
1375 return (byteCodes[offset] << 8)
1376 | (byteCodes[offset + 1] & 0xff);
1379 private static void countArgs(String descriptor, char[] returnType, StringBuilder sig, StringBuilder cnt) {
1381 Boolean count = null;
1382 boolean array = false;
1384 int firstPos = sig.length();
1385 while (i < descriptor.length()) {
1386 char ch = descriptor.charAt(i++);
1407 if (ch == 'J' || ch == 'D') {
1413 sig.insert(firstPos, ch);
1415 returnType[0] = '[';
1416 sig.insert(firstPos, "_3");
1425 returnType[0] = 'V';
1426 sig.insert(firstPos, 'V');
1429 int next = descriptor.indexOf(';', i);
1430 String realSig = mangleSig(descriptor, i - 1, next + 1);
1435 sig.append(realSig);
1438 sig.insert(firstPos, realSig);
1440 sig.insert(firstPos, "_3");
1442 returnType[0] = 'L';
1451 throw new IllegalStateException("Invalid char: " + ch);
1456 static String mangleSig(String sig) {
1457 return mangleSig(sig, 0, sig.length());
1460 private static String mangleSig(String txt, int first, int last) {
1461 StringBuilder sb = new StringBuilder();
1462 for (int i = first; i < last; i++) {
1463 final char ch = txt.charAt(i);
1465 case '/': sb.append('_'); break;
1466 case '_': sb.append("_1"); break;
1467 case ';': sb.append("_2"); break;
1468 case '[': sb.append("_3"); break;
1469 default: sb.append(ch); break;
1472 return sb.toString();
1475 private static String findMethodName(MethodData m, StringBuilder cnt) {
1476 StringBuilder name = new StringBuilder();
1477 if ("<init>".equals(m.getName())) { // NOI18N
1478 name.append("cons"); // NOI18N
1479 } else if ("<clinit>".equals(m.getName())) { // NOI18N
1480 name.append("class"); // NOI18N
1482 name.append(m.getName());
1485 countArgs(m.getInternalSig(), new char[1], name, cnt);
1486 return name.toString();
1489 static String findMethodName(String[] mi, StringBuilder cnt, char[] returnType) {
1490 StringBuilder name = new StringBuilder();
1491 String descr = mi[2];//mi.getDescriptor();
1493 if ("<init>".equals(nm)) { // NOI18N
1494 name.append("cons"); // NOI18N
1498 countArgs(descr, returnType, name, cnt);
1499 return name.toString();
1502 private int invokeStaticMethod(byte[] byteCodes, int i, final StackMapper mapper, boolean isStatic)
1503 throws IOException {
1504 int methodIndex = readIntArg(byteCodes, i);
1505 String[] mi = jc.getFieldInfoName(methodIndex);
1506 char[] returnType = { 'V' };
1507 StringBuilder cnt = new StringBuilder();
1508 String mn = findMethodName(mi, cnt, returnType);
1510 final int numArguments = isStatic ? cnt.length() : cnt.length() + 1;
1511 final Variable[] vars = new Variable[numArguments];
1513 for (int j = numArguments - 1; j >= 0; --j) {
1514 vars[j] = mapper.pop();
1517 if (returnType[0] != 'V') {
1519 .append(mapper.pushT(VarType.fromFieldType(returnType[0])))
1523 final String in = mi[0];
1524 out.append(accessClass(in.replace('/', '_')));
1525 out.append("(false).");
1526 if (mn.startsWith("cons_")) {
1527 out.append("constructor.");
1533 out.append(".call(");
1535 if (numArguments > 0) {
1536 out.append(vars[0]);
1537 for (int j = 1; j < numArguments; ++j) {
1539 out.append(vars[j]);
1547 private int invokeVirtualMethod(byte[] byteCodes, int i, final StackMapper mapper)
1548 throws IOException {
1549 int methodIndex = readIntArg(byteCodes, i);
1550 String[] mi = jc.getFieldInfoName(methodIndex);
1551 char[] returnType = { 'V' };
1552 StringBuilder cnt = new StringBuilder();
1553 String mn = findMethodName(mi, cnt, returnType);
1555 final int numArguments = cnt.length() + 1;
1556 final Variable[] vars = new Variable[numArguments];
1558 for (int j = numArguments - 1; j >= 0; --j) {
1559 vars[j] = mapper.pop();
1562 if (returnType[0] != 'V') {
1564 .append(mapper.pushT(VarType.fromFieldType(returnType[0])))
1568 out.append(vars[0]).append('.');
1572 for (int j = 1; j < numArguments; ++j) {
1574 out.append(vars[j]);
1582 private void addReference(String cn) throws IOException {
1583 if (requireReference(cn)) {
1584 debug(" /* needs " + cn + " */");
1588 private void outType(String d, StringBuilder out) {
1590 while (d.charAt(0) == '[') {
1594 if (d.charAt(0) == 'L') {
1595 assert d.charAt(d.length() - 1) == ';';
1596 out.append(d.replace('/', '_').substring(0, d.length() - 1));
1602 private String encodeConstant(int entryIndex) throws IOException {
1603 String[] classRef = { null };
1604 String s = jc.stringValue(entryIndex, classRef);
1605 if (classRef[0] != null) {
1606 if (classRef[0].startsWith("[")) {
1607 s = accessClass("java_lang_Class") + "(false).forName__Ljava_lang_Class_2Ljava_lang_String_2('" + classRef[0] + "');";
1609 addReference(classRef[0]);
1610 s = accessClass(s.replace('/', '_')) + "(false).constructor.$class";
1616 private String javaScriptBody(String prefix, MethodData m, boolean isStatic) throws IOException {
1617 byte[] arr = m.findAnnotationData(true);
1621 final String jvmType = "Lorg/apidesign/bck2brwsr/core/JavaScriptBody;";
1622 class P extends AnnotationParser {
1628 String[] args = new String[30];
1632 protected void visitAttr(String type, String attr, String at, String value) {
1633 if (type.equals(jvmType)) {
1634 if ("body".equals(attr)) {
1636 } else if ("args".equals(attr)) {
1637 args[cnt++] = value;
1639 throw new IllegalArgumentException(attr);
1646 if (p.body == null) {
1649 StringBuilder cnt = new StringBuilder();
1650 final String mn = findMethodName(m, cnt);
1651 out.append(prefix).append(mn);
1652 out.append(" = function(");
1655 for (int i = 0; i < cnt.length(); i++) {
1657 space = outputArg(out, p.args, index);
1660 out.append(") {").append("\n");
1662 out.append("\n}\n");
1665 private static String className(ClassData jc) {
1666 //return jc.getName().getInternalName().replace('/', '_');
1667 return jc.getClassName().replace('/', '_');
1670 private static String[] findAnnotation(
1671 byte[] arr, ClassData cd, final String className,
1672 final String... attrNames
1673 ) throws IOException {
1677 final String[] values = new String[attrNames.length];
1678 final boolean[] found = { false };
1679 final String jvmType = "L" + className.replace('.', '/') + ";";
1680 AnnotationParser ap = new AnnotationParser(false, true) {
1682 protected void visitAttr(String type, String attr, String at, String value) {
1683 if (type.equals(jvmType)) {
1685 for (int i = 0; i < attrNames.length; i++) {
1686 if (attrNames[i].equals(attr)) {
1695 return found[0] ? values : null;
1698 private CharSequence initField(FieldData v) {
1699 final String is = v.getInternalSig();
1700 if (is.length() == 1) {
1701 switch (is.charAt(0)) {
1707 case 'I': return " = 0;";
1709 case 'D': return " = 0.0;";
1711 throw new IllegalStateException(is);
1717 private void generateAnno(ClassData cd, final Appendable out, byte[] data) throws IOException {
1718 AnnotationParser ap = new AnnotationParser(true, false) {
1719 int[] cnt = new int[32];
1723 protected void visitAnnotationStart(String attrType, boolean top) throws IOException {
1724 final String slashType = attrType.substring(1, attrType.length() - 1);
1725 requireReference(slashType);
1727 if (cnt[depth]++ > 0) {
1731 out.append('"').append(attrType).append("\" : ");
1738 protected void visitAnnotationEnd(String type, boolean top) throws IOException {
1739 out.append("\n}\n");
1744 protected void visitValueStart(String attrName, char type) throws IOException {
1745 if (cnt[depth]++ > 0) {
1749 if (attrName != null) {
1750 out.append(attrName).append(" : ");
1758 protected void visitValueEnd(String attrName, char type) throws IOException {
1766 protected void visitAttr(String type, String attr, String attrType, String value)
1767 throws IOException {
1768 if (attr == null && value == null) {
1775 protected void visitEnumAttr(String type, String attr, String attrType, String value)
1776 throws IOException {
1777 final String slashType = attrType.substring(1, attrType.length() - 1);
1778 requireReference(slashType);
1780 out.append(accessClass(slashType.replace('/', '_')))
1781 .append("(false).constructor.").append(value);
1787 private static String outputArg(Appendable out, String[] args, int indx) throws IOException {
1788 final String name = args[indx];
1792 if (name.contains(",")) {
1793 throw new IOException("Wrong parameter with ',': " + name);
1799 private static void emit(final Appendable out,
1800 final String format,
1801 final CharSequence... params) throws IOException {
1802 final int length = format.length();
1805 int paramOffset = format.indexOf('@');
1806 while ((paramOffset != -1) && (paramOffset < (length - 1))) {
1807 final char paramChar = format.charAt(paramOffset + 1);
1808 if ((paramChar >= '1') && (paramChar <= '9')) {
1809 final int paramIndex = paramChar - '0' - 1;
1811 out.append(format, processed, paramOffset);
1812 out.append(params[paramIndex]);
1815 processed = paramOffset + 1;
1818 paramOffset = format.indexOf('@', paramOffset + 1);
1821 out.append(format, processed, length);
1824 private void generateCatch(TrapData[] traps) throws IOException {
1825 out.append("} catch (e) {\n");
1827 for (TrapData e : traps) {
1831 if (e.catch_cpx != 0) { //not finally
1832 final String classInternalName = jc.getClassName(e.catch_cpx);
1833 addReference(classInternalName);
1834 if ("java/lang/Throwable".equals(classInternalName)) {
1835 out.append("if (e.$instOf_java_lang_Throwable) {");
1836 out.append(" var stA0 = e;");
1837 out.append("} else {");
1838 out.append(" var stA0 = vm.java_lang_Throwable(true);");
1839 out.append(" vm.java_lang_Throwable.cons__VLjava_lang_String_2.call(stA0, e.toString());");
1841 out.append("gt=" + e.handler_pc + "; continue;");
1843 out.append("if (e.$instOf_" + classInternalName.replace('/', '_') + ") {");
1844 out.append("gt=" + e.handler_pc + "; var stA0 = e; continue;");
1848 finallyPC = e.handler_pc;
1851 if (finallyPC == -1) {
1852 out.append("throw e;");
1854 out.append("gt=" + finallyPC + "; var stA0 = e; continue;");