1 /*
2 * Copyright (c) 2007, 2025, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25
26 package com.sun.tools.javap;
27
28 import java.lang.reflect.Modifier;
29 import java.nio.charset.StandardCharsets;
30 import java.util.List;
31 import java.util.Locale;
32 import java.lang.classfile.*;
33 import java.lang.reflect.AccessFlag;
34 import java.lang.classfile.constantpool.*;
35 import java.lang.classfile.attribute.*;
36 import static java.lang.classfile.ClassFile.*;
37 import static java.lang.classfile.attribute.StackMapFrameInfo.*;
38 import static java.lang.classfile.instruction.CharacterRange.*;
39
40 import com.sun.tools.javac.util.Assert;
41 import com.sun.tools.javac.util.StringUtils;
42
43 /*
44 * A writer for writing Attributes as text.
45 *
46 * <p><b>This is NOT part of any supported API.
47 * If you write code that depends on this, you do so at your own risk.
48 * This code and its internal interfaces are subject to change or
49 * deletion without notice.</b>
50 */
51 public class AttributeWriter extends BasicWriter {
52
53 public static AttributeWriter instance(Context context) {
54 AttributeWriter instance = context.get(AttributeWriter.class);
55 if (instance == null)
56 instance = new AttributeWriter(context);
57 return instance;
58 }
59
60 protected AttributeWriter(Context context) {
61 super(context);
62 context.put(AttributeWriter.class, this);
63 annotationWriter = AnnotationWriter.instance(context);
64 codeWriter = CodeWriter.instance(context);
65 constantWriter = ConstantWriter.instance(context);
66 options = Options.instance(context);
67 }
68
69 public void write(List<Attribute<?>> attrs) {
70 write(attrs, null);
71 }
72
73 public void write(List<Attribute<?>> attrs, CodeAttribute lr) {
74 if (attrs != null) {
75 for (var attr : attrs) try {
76 write(attr, lr);
77 } catch (IllegalArgumentException e) {
78 report(e);
79 }
80 }
81 }
82
83 public void write(Attribute<?> a, CodeAttribute lr) {
84 switch (a) {
85 case UnknownAttribute attr -> {
86 byte[] data = attr.contents();
87 int i = 0;
88 int j = 0;
89 print(" ");
90 print(attr.attributeName().stringValue());
91 print(": ");
92 print("length = 0x" + toHex(data.length));
93 print(" (unknown attribute)");
94 println();
95 print(" ");
96 while (i < data.length) {
97 print(toHex(data[i], 2));
98
99 j++;
100 if (j == 16) {
101 println();
102 print(" ");
103 j = 0;
104 } else {
105 print(" ");
106 }
107 i++;
108 }
109 println();
110 }
111 case AnnotationDefaultAttribute attr -> {
112 println("AnnotationDefault:");
113 indent(+1);
114 print("default_value: ");
115 annotationWriter.write(attr.defaultValue());
116 indent(-1);
117 println();
118 }
119 case BootstrapMethodsAttribute attr -> {
120 println("BootstrapMethods:");
121 for (int i = 0; i < attr.bootstrapMethodsSize() ; i++) {
122 var bsm = attr.bootstrapMethods().get(i);
123 indent(+1);
124 print(i + ": #" + bsm.bootstrapMethod().index() + " ");
125 println(constantWriter.stringValue(bsm.bootstrapMethod()));
126 indent(+1);
127 println("Method arguments:");
128 indent(+1);
129 for (var arg : bsm.arguments()) {
130 print("#" + arg.index() + " ");
131 println(constantWriter.stringValue(arg));
132 }
133 indent(-3);
134 }
135 }
136 case CharacterRangeTableAttribute attr -> {
137 println("CharacterRangeTable:");
138 indent(+1);
139 for (var e : attr.characterRangeTable()) {
140 print(String.format(" %2d, %2d, %6x, %6x, %4x",
141 e.startPc(), e.endPc(),
142 e.characterRangeStart(), e.characterRangeEnd(),
143 e.flags()));
144 tab();
145 print(String.format("// %2d, %2d, %4d:%02d, %4d:%02d",
146 e.startPc(), e.endPc(),
147 (e.characterRangeStart() >> 10),
148 (e.characterRangeStart() & 0x3ff),
149 (e.characterRangeEnd() >> 10),
150 (e.characterRangeEnd() & 0x3ff)));
151 if ((e.flags() & FLAG_STATEMENT) != 0)
152 print(", statement");
153 if ((e.flags() & FLAG_BLOCK) != 0)
154 print(", block");
155 if ((e.flags() & FLAG_ASSIGNMENT) != 0)
156 print(", assignment");
157 if ((e.flags() & FLAG_FLOW_CONTROLLER) != 0)
158 print(", flow-controller");
159 if ((e.flags() & FLAG_FLOW_TARGET) != 0)
160 print(", flow-target");
161 if ((e.flags() & FLAG_INVOKE) != 0)
162 print(", invoke");
163 if ((e.flags() & FLAG_CREATE) != 0)
164 print(", create");
165 if ((e.flags() & FLAG_BRANCH_TRUE) != 0)
166 print(", branch-true");
167 if ((e.flags() & FLAG_BRANCH_FALSE) != 0)
168 print(", branch-false");
169 println();
170 }
171 indent(-1);
172 }
173 case CodeAttribute attr -> codeWriter.write(attr);
174 case CompilationIDAttribute attr ->
175 constantWriter.write(attr.compilationId().index());
176 case ConstantValueAttribute attr -> {
177 print("ConstantValue: ");
178 constantWriter.write(attr.constant().index());
179 println();
180 }
181 case DeprecatedAttribute attr -> println("Deprecated: true");
182 case EnclosingMethodAttribute attr -> {
183 print("EnclosingMethod: #" + attr.enclosingClass().index() + ".#"
184 + attr.enclosingMethod().map(PoolEntry::index).orElse(0));
185 tab();
186 print("// " + getJavaName(attr.enclosingClass().asInternalName()));
187 if (attr.enclosingMethod().isPresent())
188 print("." + attr.enclosingMethod().get().name().stringValue());
189 println();
190 }
191 case ExceptionsAttribute attr -> {
192 println("Exceptions:");
193 indent(+1);
194 print("throws ");
195 var exc = attr.exceptions();
196 for (int i = 0; i < exc.size(); i++) {
197 if (i > 0)
198 print(", ");
199 print(getJavaName(exc.get(i).asInternalName()));
200 }
201 println();
202 indent(-1);
203 }
204 case InnerClassesAttribute attr -> {
205 boolean first = true;
206 for (var info : attr.classes()) {
207 //access
208 int access_flags = info.flagsMask();
209 if (options.checkAccess(access_flags)) {
210 if (first) {
211 println("InnerClasses:");
212 indent(+1);
213 first = false;
214 }
215 for (var flag : maskToAccessFlagsReportUnknown(access_flags, AccessFlag.Location.INNER_CLASS)) {
216 if (flag.sourceModifier() && (flag != AccessFlag.ABSTRACT
217 || !info.has(AccessFlag.INTERFACE))) {
218 print(Modifier.toString(flag.mask()) + " ");
219 }
220 }
221 if (info.innerName().isPresent()) {
222 print("#" + info.innerName().get().index() + "= ");
223 }
224 print("#" + info.innerClass().index());
225 if (info.outerClass().isPresent()) {
226 print(" of #" + info.outerClass().get().index());
227 }
228 print(";");
229 tab();
230 print("// ");
231 if (info.innerName().isPresent()) {
232 print(info.innerName().get().stringValue() + "=");
233 }
234 constantWriter.write(info.innerClass().index());
235 if (info.outerClass().isPresent()) {
236 print(" of ");
237 constantWriter.write(info.outerClass().get().index());
238 }
239 println();
240 }
241 }
242 if (!first)
243 indent(-1);
244 }
245 case LineNumberTableAttribute attr -> {
246 println("LineNumberTable:");
247 indent(+1);
248 for (var entry: attr.lineNumbers()) {
249 println("line " + entry.lineNumber() + ": " + entry.startPc());
250 }
251 indent(-1);
252 }
253 case LocalVariableTableAttribute attr -> {
254 println("LocalVariableTable:");
255 indent(+1);
256 println("Start Length Slot Name Signature");
257 for (var entry : attr.localVariables()) {
258 println(String.format("%5d %7d %5d %5s %s",
259 entry.startPc(), entry.length(), entry.slot(),
260 constantWriter.stringValue(entry.name()),
261 constantWriter.stringValue(entry.type())));
262 }
263 indent(-1);
264 }
265 case LocalVariableTypeTableAttribute attr -> {
266 println("LocalVariableTypeTable:");
267 indent(+1);
268 println("Start Length Slot Name Signature");
269 for (var entry : attr.localVariableTypes()) {
270 println(String.format("%5d %7d %5d %5s %s",
271 entry.startPc(), entry.length(), entry.slot(),
272 constantWriter.stringValue(entry.name()),
273 constantWriter.stringValue(entry.signature())));
274 }
275 indent(-1);
276 }
277 case NestHostAttribute attr -> {
278 print("NestHost: ");
279 constantWriter.write(attr.nestHost().index());
280 println();
281 }
282 case MethodParametersAttribute attr -> {
283 final String header = String.format(format, "Name", "Flags");
284 println("MethodParameters:");
285 indent(+1);
286 println(header);
287 for (var entry : attr.parameters()) {
288 String namestr =
289 entry.name().isPresent() ?
290 constantWriter.stringValue(entry.name().get()) : "<no name>";
291 String flagstr =
292 (entry.has(AccessFlag.FINAL) ? "final " : "") +
293 (entry.has(AccessFlag.MANDATED) ? "mandated " : "") +
294 (entry.has(AccessFlag.SYNTHETIC) ? "synthetic" : "");
295 println(String.format(format, namestr, flagstr));
296 }
297 indent(-1);
298 }
299 case ModuleAttribute attr -> {
300 println("Module:");
301 indent(+1);
302
303 print("#" + attr.moduleName().index());
304 print(",");
305 print(String.format("%x", attr.moduleFlagsMask()));
306 tab();
307 print("// " + constantWriter.stringValue(attr.moduleName()));
308 if (attr.has(AccessFlag.OPEN))
309 print(" ACC_OPEN");
310 if (attr.has(AccessFlag.MANDATED))
311 print(" ACC_MANDATED");
312 if (attr.has(AccessFlag.SYNTHETIC))
313 print(" ACC_SYNTHETIC");
314 println();
315 var ver = attr.moduleVersion();
316 print("#" + ver.map(Utf8Entry::index).orElse(0));
317 if (ver.isPresent()) {
318 tab();
319 print("// " + constantWriter.stringValue(ver.get()));
320 }
321 println();
322 {
323 var entries = attr.requires();
324 print(entries.size());
325 tab();
326 println("// " + "requires");
327 indent(+1);
328 for (var e: entries) {
329 print("#" + e.requires().index() + ","
330 + String.format("%x", e.requiresFlagsMask()));
331 tab();
332 print("// " + constantWriter.stringValue(e.requires()));
333 if (e.has(AccessFlag.TRANSITIVE))
334 print(" ACC_TRANSITIVE");
335 if (e.has(AccessFlag.STATIC_PHASE))
336 print(" ACC_STATIC_PHASE");
337 if (e.has(AccessFlag.SYNTHETIC))
338 print(" ACC_SYNTHETIC");
339 if (e.has(AccessFlag.MANDATED))
340 print(" ACC_MANDATED");
341 println();
342 var reqVer = e.requiresVersion();
343 print("#" + reqVer.map(Utf8Entry::index).orElse(0));
344 if (reqVer.isPresent()) {
345 tab();
346 print("// " + constantWriter.stringValue(reqVer.get()));
347 }
348 println();
349 }
350 indent(-1);
351 }
352 {
353 var entries = attr.exports();
354 print(entries.size());
355 tab();
356 println("// exports");
357 indent(+1);
358 for (var e: entries) {
359 printExportOpenEntry(e.exportedPackage().index(),
360 e.exportsFlagsMask(), e.exportsTo());
361 }
362 indent(-1);
363 }
364 {
365 var entries = attr.opens();
366 print(entries.size());
367 tab();
368 println("// opens");
369 indent(+1);
370 for (var e: entries) {
371 printExportOpenEntry(e.openedPackage().index(),
372 e.opensFlagsMask(), e.opensTo());
373 }
374 indent(-1);
375 }
376 {
377 var entries = attr.uses();
378 print(entries.size());
379 tab();
380 println("// " + "uses");
381 indent(+1);
382 for (var e: entries) {
383 print("#" + e.index());
384 tab();
385 println("// " + constantWriter.stringValue(e));
386 }
387 indent(-1);
388 }
389 {
390 var entries = attr.provides();
391 print(entries.size());
392 tab();
393 println("// " + "provides");
394 indent(+1);
395 for (var e: entries) {
396 print("#" + e.provides().index());
397 tab();
398 print("// ");
399 print(constantWriter.stringValue(e.provides()));
400 println(" with ... " + e.providesWith().size());
401 indent(+1);
402 for (var with : e.providesWith()) {
403 print("#" + with.index());
404 tab();
405 println("// ... with " + constantWriter.stringValue(with));
406 }
407 indent(-1);
408 }
409 indent(-1);
410 }
411 indent(-1);
412 }
413 case ModuleHashesAttribute attr -> {
414 println("ModuleHashes:");
415 indent(+1);
416 print("algorithm: #" + attr.algorithm().index());
417 tab();
418 println("// " + attr.algorithm().stringValue());
419 print(attr.hashes().size());
420 tab();
421 println("// hashes");
422 for (var e : attr.hashes()) {
423 print("#" + e.moduleName().index());
424 tab();
425 println("// " + e.moduleName().name().stringValue());
426 println("hash_length: " + e.hash().length);
427 println("hash: [" + toHex(e.hash()) + "]");
428 }
429 indent(-1);
430 }
431 case ModuleMainClassAttribute attr -> {
432 print("ModuleMainClass: #" + attr.mainClass().index());
433 tab();
434 print("// " + getJavaName(attr.mainClass().asInternalName()));
435 println();
436 }
437 case ModulePackagesAttribute attr -> {
438 println("ModulePackages: ");
439 indent(+1);
440 for (var p : attr.packages()) {
441 print("#" + p.index());
442 tab();
443 println("// " + getJavaName(p.name().stringValue()));
444 }
445 indent(-1);
446 }
447 case ModuleResolutionAttribute attr -> {
448 println("ModuleResolution:");
449 indent(+1);
450 print(String.format("%x", attr.resolutionFlags()));
451 tab();
452 print("// ");
453 int flags = attr.resolutionFlags();
454 if ((flags & DO_NOT_RESOLVE_BY_DEFAULT) != 0)
455 print(" DO_NOT_RESOLVE_BY_DEFAULT");
456 if ((flags & WARN_DEPRECATED) != 0)
457 print(" WARN_DEPRECATED");
458 if ((flags & WARN_DEPRECATED_FOR_REMOVAL) != 0)
459 print(" WARN_DEPRECATED_FOR_REMOVAL");
460 if ((flags & WARN_INCUBATING) != 0)
461 print(" WARN_INCUBATING");
462 println();
463 indent(-1);
464 }
465 case ModuleTargetAttribute attr -> {
466 println("ModuleTarget:");
467 indent(+1);
468 print("target_platform: #" + attr.targetPlatform().index());
469 tab();
470 println("// " + attr.targetPlatform().stringValue());
471 indent(-1);
472 }
473 case NestMembersAttribute attr -> {
474 println("NestMembers:");
475 indent(+1);
476 for (var m : attr.nestMembers()) {
477 println(constantWriter.stringValue(m));
478 }
479 indent(-1);
480 }
481 case RecordAttribute attr -> {
482 println("Record:");
483 indent(+1);
484 for (var componentInfo : attr.components()) {
485 var sigAttr = componentInfo.findAttribute(Attributes.signature());
486 print(getJavaName(
487 new ClassWriter.SignaturePrinter(options.verbose).print(
488 sigAttr.map(SignatureAttribute::asTypeSignature)
489 .orElse(Signature.of(
490 componentInfo.descriptorSymbol())))));
491 print(" ");
492 print(componentInfo.name().stringValue());
493 print(";");
494 println();
495 indent(+1);
496 if (options.showDescriptors) {
497 println("descriptor: " + componentInfo.descriptor().stringValue());
498 }
499 if (options.showAllAttrs) {
500 write(componentInfo.attributes());
501 println();
502 }
503 indent(-1);
504 }
505 indent(-1);
506 }
507 case RuntimeVisibleAnnotationsAttribute attr ->
508 printAnnotations("RuntimeVisibleAnnotations:", attr.annotations());
509 case RuntimeInvisibleAnnotationsAttribute attr ->
510 printAnnotations("RuntimeInvisibleAnnotations:", attr.annotations());
511 case RuntimeVisibleTypeAnnotationsAttribute attr ->
512 printTypeAnnotations("RuntimeVisibleTypeAnnotations:",
513 attr.annotations(), lr);
514 case RuntimeInvisibleTypeAnnotationsAttribute attr ->
515 printTypeAnnotations("RuntimeInvisibleTypeAnnotations:",
516 attr.annotations(), lr);
517 case RuntimeVisibleParameterAnnotationsAttribute attr ->
518 printParameterAnnotations("RuntimeVisibleParameterAnnotations:",
519 attr.parameterAnnotations());
520 case RuntimeInvisibleParameterAnnotationsAttribute attr ->
521 printParameterAnnotations("RuntimeInvisibleParameterAnnotations:",
522 attr.parameterAnnotations());
523 case PermittedSubclassesAttribute attr -> {
524 println("PermittedSubclasses:");
525 indent(+1);
526 for (var sc : attr.permittedSubclasses()) {
527 println(constantWriter.stringValue(sc));
528 }
529 indent(-1);
530 }
531 case LoadableDescriptorsAttribute attr -> {
532 println("LoadableDescriptors:");
533 indent(+1);
534 for (var sc : attr.loadableDescriptors()) {
535 println(constantWriter.stringValue(sc));
536 }
537 indent(-1);
538 }
539 case SignatureAttribute attr -> {
540 print("Signature: #" + attr.signature().index());
541 tab();
542 println("// " + attr.signature().stringValue());
543 }
544 case SourceDebugExtensionAttribute attr -> {
545 println("SourceDebugExtension:");
546 indent(+1);
547 for (String s: new String(attr.contents(), StandardCharsets.UTF_8)
548 .split("[\r\n]+")) {
549 println(s);
550 }
551 indent(-1);
552 }
553 case SourceFileAttribute attr ->
554 println("SourceFile: \"" + attr.sourceFile().stringValue() + "\"");
555 case SourceIDAttribute attr ->
556 constantWriter.write(attr.sourceId().index());
557 case StackMapTableAttribute attr -> {
558 var entries = attr.entries();
559 println("StackMapTable: number_of_entries = " + entries.size());
560 indent(+1);
561 int lastOffset = -1;
562 for (var frame : entries) {
563 int frameType = frame.frameType();
564 if (frameType < 64) {
565 printHeader(frameType, "/* same */");
566 } else if (frameType < 128) {
567 printHeader(frameType, "/* same_locals_1_stack_item */");
568 indent(+1);
569 printMap("stack", frame.stack(), lr);
570 indent(-1);
571 } else {
572 int offsetDelta = lr.labelToBci(frame.target()) - lastOffset - 1;
573 switch (frameType) {
574 case 246 -> {
575 printHeader(frameType, "/* early_larval */");
576 indent(+1);
577 println("number of unset_fields = " + frame.unsetFields().size());
578 indent(+1);
579 for (NameAndTypeEntry field : frame.unsetFields()) {
580 print("unset_field = #");
581 constantWriter.write(field.index());
582 println();
583 }
584 // temporary: print the nested contents of early larval
585 indent(+1);
586 println("offset_delta = " + offsetDelta);
587 printMap("locals", frame.locals(), lr);
588 printMap("stack", frame.stack(), lr);
589 indent(-1);
590 indent(-1);
591 indent(-1);
592 }
593 case 247 -> {
594 printHeader(frameType, "/* same_locals_1_stack_item_entry_extended */");
595 indent(+1);
596 println("offset_delta = " + offsetDelta);
597 printMap("stack", frame.stack(), lr);
598 indent(-1);
599 }
600 case 248, 249, 250 -> {
601 printHeader(frameType, "/* chop */");
602 indent(+1);
603 println("offset_delta = " + offsetDelta);
604 indent(-1);
605 }
606 case 251 -> {
607 printHeader(frameType, "/* same_entry_extended */");
608 indent(+1);
609 println("offset_delta = " + offsetDelta);
610 indent(-1);
611 }
612 case 252, 253, 254 -> {
613 printHeader(frameType, "/* append */");
614 indent(+1);
615 println("offset_delta = " + offsetDelta);
616 var locals = frame.locals();
617 printMap("locals", locals.subList(locals.size()
618 - frameType + 251, locals.size()), lr);
619 indent(-1);
620 }
621 case 255 -> {
622 printHeader(frameType, "/* full_entry */");
623 indent(+1);
624 println("offset_delta = " + offsetDelta);
625 printMap("locals", frame.locals(), lr);
626 printMap("stack", frame.stack(), lr);
627 indent(-1);
628 }
629 }
630 }
631 lastOffset = lr.labelToBci(frame.target());
632 }
633 indent(-1);
634 }
635 case SyntheticAttribute attr ->
636 println("Synthetic: true");
637 default -> {}
638 }
639 }
640
641 //ToDo move somewhere to Bytecode API
642 public static final int DO_NOT_RESOLVE_BY_DEFAULT = 0x0001;
643 public static final int WARN_DEPRECATED = 0x0002;
644 public static final int WARN_DEPRECATED_FOR_REMOVAL = 0x0004;
645 public static final int WARN_INCUBATING = 0x0008;
646
647 private static final String format = "%-31s%s";
648
649 protected void printExportOpenEntry(int index, int flags, List<ModuleEntry> to_index) {
650 print("#" + index + "," + String.format("%x", flags));
651 tab();
652 print("// ");
653 print(constantWriter.stringValue(index));
654 if ((flags & ACC_MANDATED) != 0)
655 print(" ACC_MANDATED");
656 if ((flags & ACC_SYNTHETIC) != 0)
657 print(" ACC_SYNTHETIC");
658 if (to_index.size() == 0) {
659 println();
660 } else {
661 println(" to ... " + to_index.size());
662 indent(+1);
663 for (var to: to_index) {
664 print("#" + to.index());
665 tab();
666 println("// ... to " + constantWriter.stringValue(to));
667 }
668 indent(-1);
669 }
670 }
671
672 private void printAnnotations(String message, List<? extends Annotation> anno) {
673 println(message);
674 indent(+1);
675 for (int i = 0; i < anno.size(); i++) {
676 print(i + ": ");
677 annotationWriter.write(anno.get(i));
678 println();
679 }
680 indent(-1);
681 }
682
683 private void printTypeAnnotations(String message,
684 List<? extends TypeAnnotation> anno, CodeAttribute lr) {
685 println(message);
686 indent(+1);
687 for (int i = 0; i < anno.size(); i++) {
688 print(i + ": ");
689 annotationWriter.write(anno.get(i), lr);
690 println();
691 }
692 indent(-1);
693 }
694
695 private void printParameterAnnotations(String message, List<List<Annotation>> paramsAnno) {
696 println(message);
697 indent(+1);
698 for (int param = 0; param < paramsAnno.size(); param++) {
699 println("parameter " + param + ": ");
700 indent(+1);
701 var annos = paramsAnno.get(param);
702 for (int i = 0; i < annos.size(); i++) {
703 print(i + ": ");
704 annotationWriter.write(annos.get(i));
705 println();
706 }
707 indent(-1);
708 }
709 indent(-1);
710 }
711
712 void printHeader(int frameType, String extra) {
713 print("frame_type = " + frameType + " ");
714 println(extra);
715 }
716
717 void printMap(String name, List<VerificationTypeInfo> map, CodeAttribute lr) {
718 print(name + " = [");
719 for (int i = 0; i < map.size(); i++) {
720 var info = map.get(i);
721 switch (info) {
722 case ObjectVerificationTypeInfo obj -> {
723 print(" ");
724 constantWriter.write(obj.className().index());
725 }
726 case UninitializedVerificationTypeInfo u -> {
727 print(" uninitialized " + lr.labelToBci(u.newTarget()));
728 }
729 case SimpleVerificationTypeInfo s ->
730 print(" " + mapTypeName(s));
731 }
732 print(i == (map.size() - 1) ? " " : ",");
733 }
734 println("]");
735 }
736
737 String mapTypeName(SimpleVerificationTypeInfo type) {
738 return switch (type) {
739 case TOP -> "top";
740 case INTEGER -> "int";
741 case FLOAT -> "float";
742 case LONG -> "long";
743 case DOUBLE -> "double";
744 case NULL -> "null";
745 case UNINITIALIZED_THIS -> "this";
746 };
747 }
748
749 static String getJavaName(String name) {
750 return name.replace('/', '.');
751 }
752
753 String toHex(byte b, int w) {
754 return toHex(b & 0xff, w);
755 }
756
757 static String toHex(int i) {
758 return Integer.toString(i, 16).toUpperCase(Locale.US);
759 }
760
761 static String toHex(int i, int w) {
762 String s = Integer.toHexString(i).toUpperCase(Locale.US);
763 while (s.length() < w)
764 s = "0" + s;
765 return s;
766 }
767
768 static String toHex(byte[] ba) {
769 StringBuilder sb = new StringBuilder(ba.length);
770 for (byte b: ba) {
771 sb.append(String.format("%02x", b & 0xff));
772 }
773 return sb.toString();
774 }
775
776 private final AnnotationWriter annotationWriter;
777 private final CodeWriter codeWriter;
778 private final ConstantWriter constantWriter;
779 private final Options options;
780 }