1 /*
2 * Copyright (c) 1999, 2016, 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.javac.jvm;
27
28 import java.io.*;
29 import java.net.URI;
30 import java.net.URISyntaxException;
31 import java.nio.CharBuffer;
32 import java.util.Arrays;
33 import java.util.EnumSet;
34 import java.util.HashMap;
35 import java.util.HashSet;
36 import java.util.Map;
37 import java.util.Set;
38
39 import javax.lang.model.element.Modifier;
40 import javax.lang.model.element.NestingKind;
41 import javax.tools.JavaFileManager;
42 import javax.tools.JavaFileObject;
43
44 import com.sun.tools.javac.comp.Annotate;
45 import com.sun.tools.javac.comp.Annotate.AnnotationTypeCompleter;
46 import com.sun.tools.javac.code.*;
47 import com.sun.tools.javac.code.Directive.*;
48 import com.sun.tools.javac.code.Lint.LintCategory;
49 import com.sun.tools.javac.code.Scope.WriteableScope;
50 import com.sun.tools.javac.code.Symbol.*;
51 import com.sun.tools.javac.code.Symtab;
52 import com.sun.tools.javac.code.Type.*;
53 import com.sun.tools.javac.comp.Annotate.AnnotationTypeMetadata;
54 import com.sun.tools.javac.file.BaseFileManager;
55 import com.sun.tools.javac.file.PathFileObject;
56 import com.sun.tools.javac.jvm.ClassFile.NameAndType;
57 import com.sun.tools.javac.jvm.ClassFile.Version;
58 import com.sun.tools.javac.main.Option;
59 import com.sun.tools.javac.util.*;
60 import com.sun.tools.javac.util.DefinedBy.Api;
61 import com.sun.tools.javac.util.JCDiagnostic.DiagnosticPosition;
62
63 import static com.sun.tools.javac.code.Flags.*;
64 import static com.sun.tools.javac.code.Kinds.Kind.*;
65 import static com.sun.tools.javac.code.TypeTag.ARRAY;
66 import static com.sun.tools.javac.code.TypeTag.CLASS;
67 import static com.sun.tools.javac.code.TypeTag.TYPEVAR;
68 import static com.sun.tools.javac.jvm.ClassFile.*;
69 import static com.sun.tools.javac.jvm.ClassFile.Version.*;
70
71 import static com.sun.tools.javac.main.Option.PARAMETERS;
72
73 /** This class provides operations to read a classfile into an internal
74 * representation. The internal representation is anchored in a
75 * ClassSymbol which contains in its scope symbol representations
76 * for all other definitions in the classfile. Top-level Classes themselves
77 * appear as members of the scopes of PackageSymbols.
78 *
79 * <p><b>This is NOT part of any supported API.
80 * If you write code that depends on this, you do so at your own risk.
81 * This code and its internal interfaces are subject to change or
82 * deletion without notice.</b>
83 */
84 public class ClassReader {
85 /** The context key for the class reader. */
86 protected static final Context.Key<ClassReader> classReaderKey = new Context.Key<>();
87
88 public static final int INITIAL_BUFFER_SIZE = 0x0fff0;
89
90 private final Annotate annotate;
91
92 /** Switch: verbose output.
93 */
94 boolean verbose;
95
96 /** Switch: read constant pool and code sections. This switch is initially
97 * set to false but can be turned on from outside.
98 */
99 public boolean readAllOfClassFile = false;
100
101 /** Switch: allow simplified varargs.
102 */
103 boolean allowSimplifiedVarargs;
104
105 /** Switch: allow modules.
106 */
107 boolean allowModules;
108
109 /** Lint option: warn about classfile issues
110 */
111 boolean lintClassfile;
112
113 /** Switch: preserve parameter names from the variable table.
114 */
115 public boolean saveParameterNames;
116
117 /**
118 * The currently selected profile.
119 */
120 public final Profile profile;
121
122 /** The log to use for verbose output
123 */
124 final Log log;
125
126 /** The symbol table. */
127 Symtab syms;
128
129 Types types;
130
131 /** The name table. */
132 final Names names;
133
134 /** Access to files
135 */
136 private final JavaFileManager fileManager;
137
138 /** Factory for diagnostics
139 */
140 JCDiagnostic.Factory diagFactory;
141
142 /** The current scope where type variables are entered.
143 */
144 protected WriteableScope typevars;
145
146 private List<InterimUsesDirective> interimUses = List.nil();
147 private List<InterimProvidesDirective> interimProvides = List.nil();
148
149 /** The path name of the class file currently being read.
150 */
151 protected JavaFileObject currentClassFile = null;
152
153 /** The class or method currently being read.
154 */
155 protected Symbol currentOwner = null;
156
157 /** The module containing the class currently being read.
158 */
159 protected ModuleSymbol currentModule = null;
160
161 /** The buffer containing the currently read class file.
162 */
163 byte[] buf = new byte[INITIAL_BUFFER_SIZE];
164
165 /** The current input pointer.
166 */
167 protected int bp;
168
169 /** The objects of the constant pool.
170 */
171 Object[] poolObj;
172
173 /** For every constant pool entry, an index into buf where the
174 * defining section of the entry is found.
175 */
176 int[] poolIdx;
177
178 /** The major version number of the class file being read. */
179 int majorVersion;
180 /** The minor version number of the class file being read. */
181 int minorVersion;
182
183 /** A table to hold the constant pool indices for method parameter
184 * names, as given in LocalVariableTable attributes.
185 */
186 int[] parameterNameIndices;
187
188 /**
189 * Whether or not any parameter names have been found.
190 */
191 boolean haveParameterNameIndices;
192
193 /** Set this to false every time we start reading a method
194 * and are saving parameter names. Set it to true when we see
195 * MethodParameters, if it's set when we see a LocalVariableTable,
196 * then we ignore the parameter names from the LVT.
197 */
198 boolean sawMethodParameters;
199
200 /**
201 * The set of attribute names for which warnings have been generated for the current class
202 */
203 Set<Name> warnedAttrs = new HashSet<>();
204
205 /**
206 * The prototype @Target Attribute.Compound if this class is an annotation annotated with
207 * @Target
208 */
209 CompoundAnnotationProxy target;
210
211 /**
212 * The prototype @Repetable Attribute.Compound if this class is an annotation annotated with
213 * @Repeatable
214 */
215 CompoundAnnotationProxy repeatable;
216
217 /** Get the ClassReader instance for this invocation. */
218 public static ClassReader instance(Context context) {
219 ClassReader instance = context.get(classReaderKey);
220 if (instance == null)
221 instance = new ClassReader(context);
222 return instance;
223 }
224
225 /** Construct a new class reader. */
226 protected ClassReader(Context context) {
227 context.put(classReaderKey, this);
228 annotate = Annotate.instance(context);
229 names = Names.instance(context);
230 syms = Symtab.instance(context);
231 types = Types.instance(context);
232 fileManager = context.get(JavaFileManager.class);
233 if (fileManager == null)
234 throw new AssertionError("FileManager initialization error");
235 diagFactory = JCDiagnostic.Factory.instance(context);
236
237 log = Log.instance(context);
238
239 Options options = Options.instance(context);
240 verbose = options.isSet(Option.VERBOSE);
241
242 Source source = Source.instance(context);
243 allowSimplifiedVarargs = source.allowSimplifiedVarargs();
244 allowModules = source.allowModules();
245
246 saveParameterNames = options.isSet(PARAMETERS);
247
248 profile = Profile.instance(context);
249
250 typevars = WriteableScope.create(syms.noSymbol);
251
252 lintClassfile = Lint.instance(context).isEnabled(LintCategory.CLASSFILE);
253
254 initAttributeReaders();
255 }
256
257 /** Add member to class unless it is synthetic.
258 */
259 private void enterMember(ClassSymbol c, Symbol sym) {
260 // Synthetic members are not entered -- reason lost to history (optimization?).
261 // Lambda methods must be entered because they may have inner classes (which reference them)
262 if ((sym.flags_field & (SYNTHETIC|BRIDGE)) != SYNTHETIC || sym.name.startsWith(names.lambda))
263 c.members_field.enter(sym);
264 }
265
266 /************************************************************************
267 * Error Diagnoses
268 ***********************************************************************/
269
270 public ClassFinder.BadClassFile badClassFile(String key, Object... args) {
271 return new ClassFinder.BadClassFile (
272 currentOwner.enclClass(),
273 currentClassFile,
274 diagFactory.fragment(key, args),
275 diagFactory);
276 }
277
278 public ClassFinder.BadEnclosingMethodAttr badEnclosingMethod(Object... args) {
279 return new ClassFinder.BadEnclosingMethodAttr (
280 currentOwner.enclClass(),
281 currentClassFile,
282 diagFactory.fragment("bad.enclosing.method", args),
283 diagFactory);
284 }
285
286 /************************************************************************
287 * Buffer Access
288 ***********************************************************************/
289
290 /** Read a character.
291 */
292 char nextChar() {
293 return (char)(((buf[bp++] & 0xFF) << 8) + (buf[bp++] & 0xFF));
294 }
295
296 /** Read a byte.
297 */
298 int nextByte() {
299 return buf[bp++] & 0xFF;
300 }
301
302 /** Read an integer.
303 */
304 int nextInt() {
305 return
306 ((buf[bp++] & 0xFF) << 24) +
307 ((buf[bp++] & 0xFF) << 16) +
308 ((buf[bp++] & 0xFF) << 8) +
309 (buf[bp++] & 0xFF);
310 }
311
312 /** Extract a character at position bp from buf.
313 */
314 char getChar(int bp) {
315 return
316 (char)(((buf[bp] & 0xFF) << 8) + (buf[bp+1] & 0xFF));
317 }
318
319 /** Extract an integer at position bp from buf.
320 */
321 int getInt(int bp) {
322 return
323 ((buf[bp] & 0xFF) << 24) +
324 ((buf[bp+1] & 0xFF) << 16) +
325 ((buf[bp+2] & 0xFF) << 8) +
326 (buf[bp+3] & 0xFF);
327 }
328
329
330 /** Extract a long integer at position bp from buf.
331 */
332 long getLong(int bp) {
333 DataInputStream bufin =
334 new DataInputStream(new ByteArrayInputStream(buf, bp, 8));
335 try {
336 return bufin.readLong();
337 } catch (IOException e) {
338 throw new AssertionError(e);
339 }
340 }
341
342 /** Extract a float at position bp from buf.
343 */
344 float getFloat(int bp) {
345 DataInputStream bufin =
346 new DataInputStream(new ByteArrayInputStream(buf, bp, 4));
347 try {
348 return bufin.readFloat();
349 } catch (IOException e) {
350 throw new AssertionError(e);
351 }
352 }
353
354 /** Extract a double at position bp from buf.
355 */
356 double getDouble(int bp) {
357 DataInputStream bufin =
358 new DataInputStream(new ByteArrayInputStream(buf, bp, 8));
359 try {
360 return bufin.readDouble();
361 } catch (IOException e) {
362 throw new AssertionError(e);
363 }
364 }
365
366 /************************************************************************
367 * Constant Pool Access
368 ***********************************************************************/
369
370 /** Index all constant pool entries, writing their start addresses into
371 * poolIdx.
372 */
373 void indexPool() {
374 poolIdx = new int[nextChar()];
375 poolObj = new Object[poolIdx.length];
376 int i = 1;
377 while (i < poolIdx.length) {
378 poolIdx[i++] = bp;
379 byte tag = buf[bp++];
380 switch (tag) {
381 case CONSTANT_Utf8: case CONSTANT_Unicode: {
382 int len = nextChar();
383 bp = bp + len;
384 break;
385 }
386 case CONSTANT_Class:
387 case CONSTANT_String:
388 case CONSTANT_MethodType:
389 bp = bp + 2;
390 break;
391 case CONSTANT_MethodHandle:
392 bp = bp + 3;
393 break;
394 case CONSTANT_Fieldref:
395 case CONSTANT_Methodref:
396 case CONSTANT_InterfaceMethodref:
397 case CONSTANT_NameandType:
398 case CONSTANT_Integer:
399 case CONSTANT_Float:
400 case CONSTANT_InvokeDynamic:
401 bp = bp + 4;
402 break;
403 case CONSTANT_Long:
404 case CONSTANT_Double:
405 bp = bp + 8;
406 i++;
407 break;
408 default:
409 throw badClassFile("bad.const.pool.tag.at",
410 Byte.toString(tag),
411 Integer.toString(bp -1));
412 }
413 }
414 }
415
416 /** Read constant pool entry at start address i, use pool as a cache.
417 */
418 Object readPool(int i) {
419 Object result = poolObj[i];
420 if (result != null) return result;
421
422 int index = poolIdx[i];
423 if (index == 0) return null;
424
425 byte tag = buf[index];
426 switch (tag) {
427 case CONSTANT_Utf8:
428 poolObj[i] = names.fromUtf(buf, index + 3, getChar(index + 1));
429 break;
430 case CONSTANT_Unicode:
431 throw badClassFile("unicode.str.not.supported");
432 case CONSTANT_Class:
433 poolObj[i] = readClassOrType(getChar(index + 1));
434 break;
435 case CONSTANT_String:
436 // FIXME: (footprint) do not use toString here
437 poolObj[i] = readName(getChar(index + 1)).toString();
438 break;
439 case CONSTANT_Fieldref: {
440 ClassSymbol owner = readClassSymbol(getChar(index + 1));
441 NameAndType nt = readNameAndType(getChar(index + 3));
442 poolObj[i] = new VarSymbol(0, nt.name, nt.uniqueType.type, owner);
443 break;
444 }
445 case CONSTANT_Methodref:
446 case CONSTANT_InterfaceMethodref: {
447 ClassSymbol owner = readClassSymbol(getChar(index + 1));
448 NameAndType nt = readNameAndType(getChar(index + 3));
449 poolObj[i] = new MethodSymbol(0, nt.name, nt.uniqueType.type, owner);
450 break;
451 }
452 case CONSTANT_NameandType:
453 poolObj[i] = new NameAndType(
454 readName(getChar(index + 1)),
455 readType(getChar(index + 3)), types);
456 break;
457 case CONSTANT_Integer:
458 poolObj[i] = getInt(index + 1);
459 break;
460 case CONSTANT_Float:
461 poolObj[i] = Float.valueOf(getFloat(index + 1));
462 break;
463 case CONSTANT_Long:
464 poolObj[i] = Long.valueOf(getLong(index + 1));
465 break;
466 case CONSTANT_Double:
467 poolObj[i] = Double.valueOf(getDouble(index + 1));
468 break;
469 case CONSTANT_MethodHandle:
470 skipBytes(4);
471 break;
472 case CONSTANT_MethodType:
473 skipBytes(3);
474 break;
475 case CONSTANT_InvokeDynamic:
476 skipBytes(5);
477 break;
478 default:
479 throw badClassFile("bad.const.pool.tag", Byte.toString(tag));
480 }
481 return poolObj[i];
482 }
483
484 /** Read signature and convert to type.
485 */
486 Type readType(int i) {
487 int index = poolIdx[i];
488 return sigToType(buf, index + 3, getChar(index + 1));
489 }
490
491 /** If name is an array type or class signature, return the
492 * corresponding type; otherwise return a ClassSymbol with given name.
493 */
494 Object readClassOrType(int i) {
495 int index = poolIdx[i];
496 int len = getChar(index + 1);
497 int start = index + 3;
498 Assert.check(buf[start] == '[' || buf[start + len - 1] != ';');
499 // by the above assertion, the following test can be
500 // simplified to (buf[start] == '[')
501 return (buf[start] == '[' || buf[start + len - 1] == ';')
502 ? (Object)sigToType(buf, start, len)
503 : (Object)enterClass(names.fromUtf(internalize(buf, start,
504 len)));
505 }
506
507 /** Read signature and convert to type parameters.
508 */
509 List<Type> readTypeParams(int i) {
510 int index = poolIdx[i];
511 return sigToTypeParams(buf, index + 3, getChar(index + 1));
512 }
513
514 /** Read class entry.
515 */
516 ClassSymbol readClassSymbol(int i) {
517 Object obj = readPool(i);
518 if (obj != null && !(obj instanceof ClassSymbol))
519 throw badClassFile("bad.const.pool.entry",
520 currentClassFile.toString(),
521 "CONSTANT_Class_info", i);
522 return (ClassSymbol)obj;
523 }
524
525 Name readClassName(int i) {
526 int index = poolIdx[i];
527 if (index == 0) return null;
528 byte tag = buf[index];
529 if (tag != CONSTANT_Class) {
530 throw badClassFile("bad.const.pool.entry",
531 currentClassFile.toString(),
532 "CONSTANT_Class_info", i);
533 }
534 int nameIndex = poolIdx[getChar(index + 1)];
535 int len = getChar(nameIndex + 1);
536 int start = nameIndex + 3;
537 if (buf[start] == '[' || buf[start + len - 1] == ';')
538 throw badClassFile("wrong class name"); //TODO: proper diagnostics
539 return names.fromUtf(internalize(buf, start, len));
540 }
541
542 /** Read name.
543 */
544 Name readName(int i) {
545 Object obj = readPool(i);
546 if (obj != null && !(obj instanceof Name))
547 throw badClassFile("bad.const.pool.entry",
548 currentClassFile.toString(),
549 "CONSTANT_Utf8_info or CONSTANT_String_info", i);
550 return (Name)obj;
551 }
552
553 /** Read name and type.
554 */
555 NameAndType readNameAndType(int i) {
556 Object obj = readPool(i);
557 if (obj != null && !(obj instanceof NameAndType))
558 throw badClassFile("bad.const.pool.entry",
559 currentClassFile.toString(),
560 "CONSTANT_NameAndType_info", i);
561 return (NameAndType)obj;
562 }
563
564 /** Read the class name of a module-info.class file.
565 * The name is stored in a CONSTANT_Class entry, where the
566 * class name is of the form module-name.module-info.
567 */
568 Name readModuleInfoName(int i) {
569 if (majorVersion < Version.V53.major) {
570 throw badClassFile("anachronistic.module.info",
571 Integer.toString(majorVersion),
572 Integer.toString(minorVersion));
573 }
574 int classIndex = poolIdx[i];
575 if (buf[classIndex] == CONSTANT_Class) {
576 int utf8Index = poolIdx[getChar(classIndex + 1)];
577 if (buf[utf8Index] == CONSTANT_Utf8) {
578 int len = getChar(utf8Index + 1);
579 int start = utf8Index + 3;
580 return names.fromUtf(internalize(buf, start, len));
581 }
582 }
583 throw badClassFile("bad.module-info.name");
584 }
585
586 /** Read requires_flags.
587 */
588 Set<RequiresFlag> readRequiresFlags(int flags) {
589 Set<RequiresFlag> set = EnumSet.noneOf(RequiresFlag.class);
590 for (RequiresFlag f: RequiresFlag.values()) {
591 if ((flags & f.value) != 0)
592 set.add(f);
593 }
594 return set;
595 }
596
597 /************************************************************************
598 * Reading Types
599 ***********************************************************************/
600
601 /** The unread portion of the currently read type is
602 * signature[sigp..siglimit-1].
603 */
604 byte[] signature;
605 int sigp;
606 int siglimit;
607 boolean sigEnterPhase = false;
608
609 /** Convert signature to type, where signature is a byte array segment.
610 */
611 Type sigToType(byte[] sig, int offset, int len) {
612 signature = sig;
613 sigp = offset;
614 siglimit = offset + len;
615 return sigToType();
616 }
617
618 /** Convert signature to type, where signature is implicit.
619 */
620 Type sigToType() {
621 switch ((char) signature[sigp]) {
622 case 'T':
623 sigp++;
624 int start = sigp;
625 while (signature[sigp] != ';') sigp++;
626 sigp++;
627 return sigEnterPhase
628 ? Type.noType
629 : findTypeVar(names.fromUtf(signature, start, sigp - 1 - start));
630 case '+': {
631 sigp++;
632 Type t = sigToType();
633 return new WildcardType(t, BoundKind.EXTENDS, syms.boundClass);
634 }
635 case '*':
636 sigp++;
637 return new WildcardType(syms.objectType, BoundKind.UNBOUND,
638 syms.boundClass);
639 case '-': {
640 sigp++;
641 Type t = sigToType();
642 return new WildcardType(t, BoundKind.SUPER, syms.boundClass);
643 }
644 case 'B':
645 sigp++;
646 return syms.byteType;
647 case 'C':
648 sigp++;
649 return syms.charType;
650 case 'D':
651 sigp++;
652 return syms.doubleType;
653 case 'F':
654 sigp++;
655 return syms.floatType;
656 case 'I':
657 sigp++;
658 return syms.intType;
659 case 'J':
660 sigp++;
661 return syms.longType;
662 case 'L':
663 {
664 // int oldsigp = sigp;
665 Type t = classSigToType();
666 if (sigp < siglimit && signature[sigp] == '.')
667 throw badClassFile("deprecated inner class signature syntax " +
668 "(please recompile from source)");
669 /*
670 System.err.println(" decoded " +
671 new String(signature, oldsigp, sigp-oldsigp) +
672 " => " + t + " outer " + t.outer());
673 */
674 return t;
675 }
676 case 'S':
677 sigp++;
678 return syms.shortType;
679 case 'V':
680 sigp++;
681 return syms.voidType;
682 case 'Z':
683 sigp++;
684 return syms.booleanType;
685 case '[':
686 sigp++;
687 return new ArrayType(sigToType(), syms.arrayClass);
688 case '(':
689 sigp++;
690 List<Type> argtypes = sigToTypes(')');
691 Type restype = sigToType();
692 List<Type> thrown = List.nil();
693 while (signature[sigp] == '^') {
694 sigp++;
695 thrown = thrown.prepend(sigToType());
696 }
697 // if there is a typevar in the throws clause we should state it.
698 for (List<Type> l = thrown; l.nonEmpty(); l = l.tail) {
699 if (l.head.hasTag(TYPEVAR)) {
700 l.head.tsym.flags_field |= THROWS;
701 }
702 }
703 return new MethodType(argtypes,
704 restype,
705 thrown.reverse(),
706 syms.methodClass);
707 case '<':
708 typevars = typevars.dup(currentOwner);
709 Type poly = new ForAll(sigToTypeParams(), sigToType());
710 typevars = typevars.leave();
711 return poly;
712 default:
713 throw badClassFile("bad.signature",
714 Convert.utf2string(signature, sigp, 10));
715 }
716 }
717
718 byte[] signatureBuffer = new byte[0];
719 int sbp = 0;
720 /** Convert class signature to type, where signature is implicit.
721 */
722 Type classSigToType() {
723 if (signature[sigp] != 'L')
724 throw badClassFile("bad.class.signature",
725 Convert.utf2string(signature, sigp, 10));
726 sigp++;
727 Type outer = Type.noType;
728 int startSbp = sbp;
729
730 while (true) {
731 final byte c = signature[sigp++];
732 switch (c) {
733
734 case ';': { // end
735 ClassSymbol t = enterClass(names.fromUtf(signatureBuffer,
736 startSbp,
737 sbp - startSbp));
738
739 try {
740 return (outer == Type.noType) ?
741 t.erasure(types) :
742 new ClassType(outer, List.<Type>nil(), t);
743 } finally {
744 sbp = startSbp;
745 }
746 }
747
748 case '<': // generic arguments
749 ClassSymbol t = enterClass(names.fromUtf(signatureBuffer,
750 startSbp,
751 sbp - startSbp));
752 outer = new ClassType(outer, sigToTypes('>'), t) {
753 boolean completed = false;
754 @Override @DefinedBy(Api.LANGUAGE_MODEL)
755 public Type getEnclosingType() {
756 if (!completed) {
757 completed = true;
758 tsym.complete();
759 Type enclosingType = tsym.type.getEnclosingType();
760 if (enclosingType != Type.noType) {
761 List<Type> typeArgs =
762 super.getEnclosingType().allparams();
763 List<Type> typeParams =
764 enclosingType.allparams();
765 if (typeParams.length() != typeArgs.length()) {
766 // no "rare" types
767 super.setEnclosingType(types.erasure(enclosingType));
768 } else {
769 super.setEnclosingType(types.subst(enclosingType,
770 typeParams,
771 typeArgs));
772 }
773 } else {
774 super.setEnclosingType(Type.noType);
775 }
776 }
777 return super.getEnclosingType();
778 }
779 @Override
780 public void setEnclosingType(Type outer) {
781 throw new UnsupportedOperationException();
782 }
783 };
784 switch (signature[sigp++]) {
785 case ';':
786 if (sigp < signature.length && signature[sigp] == '.') {
787 // support old-style GJC signatures
788 // The signature produced was
789 // Lfoo/Outer<Lfoo/X;>;.Lfoo/Outer$Inner<Lfoo/Y;>;
790 // rather than say
791 // Lfoo/Outer<Lfoo/X;>.Inner<Lfoo/Y;>;
792 // so we skip past ".Lfoo/Outer$"
793 sigp += (sbp - startSbp) + // "foo/Outer"
794 3; // ".L" and "$"
795 signatureBuffer[sbp++] = (byte)'$';
796 break;
797 } else {
798 sbp = startSbp;
799 return outer;
800 }
801 case '.':
802 signatureBuffer[sbp++] = (byte)'$';
803 break;
804 default:
805 throw new AssertionError(signature[sigp-1]);
806 }
807 continue;
808
809 case '.':
810 //we have seen an enclosing non-generic class
811 if (outer != Type.noType) {
812 t = enterClass(names.fromUtf(signatureBuffer,
813 startSbp,
814 sbp - startSbp));
815 outer = new ClassType(outer, List.<Type>nil(), t);
816 }
817 signatureBuffer[sbp++] = (byte)'$';
818 continue;
819 case '/':
820 signatureBuffer[sbp++] = (byte)'.';
821 continue;
822 default:
823 signatureBuffer[sbp++] = c;
824 continue;
825 }
826 }
827 }
828
829 /** Convert (implicit) signature to list of types
830 * until `terminator' is encountered.
831 */
832 List<Type> sigToTypes(char terminator) {
833 List<Type> head = List.of(null);
834 List<Type> tail = head;
835 while (signature[sigp] != terminator)
836 tail = tail.setTail(List.of(sigToType()));
837 sigp++;
838 return head.tail;
839 }
840
841 /** Convert signature to type parameters, where signature is a byte
842 * array segment.
843 */
844 List<Type> sigToTypeParams(byte[] sig, int offset, int len) {
845 signature = sig;
846 sigp = offset;
847 siglimit = offset + len;
848 return sigToTypeParams();
849 }
850
851 /** Convert signature to type parameters, where signature is implicit.
852 */
853 List<Type> sigToTypeParams() {
854 List<Type> tvars = List.nil();
855 if (signature[sigp] == '<') {
856 sigp++;
857 int start = sigp;
858 sigEnterPhase = true;
859 while (signature[sigp] != '>')
860 tvars = tvars.prepend(sigToTypeParam());
861 sigEnterPhase = false;
862 sigp = start;
863 while (signature[sigp] != '>')
864 sigToTypeParam();
865 sigp++;
866 }
867 return tvars.reverse();
868 }
869
870 /** Convert (implicit) signature to type parameter.
871 */
872 Type sigToTypeParam() {
873 int start = sigp;
874 while (signature[sigp] != ':') sigp++;
875 Name name = names.fromUtf(signature, start, sigp - start);
876 TypeVar tvar;
877 if (sigEnterPhase) {
878 tvar = new TypeVar(name, currentOwner, syms.botType);
879 typevars.enter(tvar.tsym);
880 } else {
881 tvar = (TypeVar)findTypeVar(name);
882 }
883 List<Type> bounds = List.nil();
884 boolean allInterfaces = false;
885 if (signature[sigp] == ':' && signature[sigp+1] == ':') {
886 sigp++;
887 allInterfaces = true;
888 }
889 while (signature[sigp] == ':') {
890 sigp++;
891 bounds = bounds.prepend(sigToType());
892 }
893 if (!sigEnterPhase) {
894 types.setBounds(tvar, bounds.reverse(), allInterfaces);
895 }
896 return tvar;
897 }
898
899 /** Find type variable with given name in `typevars' scope.
900 */
901 Type findTypeVar(Name name) {
902 Symbol s = typevars.findFirst(name);
903 if (s != null) {
904 return s.type;
905 } else {
906 if (readingClassAttr) {
907 // While reading the class attribute, the supertypes
908 // might refer to a type variable from an enclosing element
909 // (method or class).
910 // If the type variable is defined in the enclosing class,
911 // we can actually find it in
912 // currentOwner.owner.type.getTypeArguments()
913 // However, until we have read the enclosing method attribute
914 // we don't know for sure if this owner is correct. It could
915 // be a method and there is no way to tell before reading the
916 // enclosing method attribute.
917 TypeVar t = new TypeVar(name, currentOwner, syms.botType);
918 missingTypeVariables = missingTypeVariables.prepend(t);
919 // System.err.println("Missing type var " + name);
920 return t;
921 }
922 throw badClassFile("undecl.type.var", name);
923 }
924 }
925
926 /************************************************************************
927 * Reading Attributes
928 ***********************************************************************/
929
930 protected enum AttributeKind { CLASS, MEMBER }
931
932 protected abstract class AttributeReader {
933 protected AttributeReader(Name name, ClassFile.Version version, Set<AttributeKind> kinds) {
934 this.name = name;
935 this.version = version;
936 this.kinds = kinds;
937 }
938
939 protected boolean accepts(AttributeKind kind) {
940 if (kinds.contains(kind)) {
941 if (majorVersion > version.major || (majorVersion == version.major && minorVersion >= version.minor))
942 return true;
943
944 if (lintClassfile && !warnedAttrs.contains(name)) {
945 JavaFileObject prev = log.useSource(currentClassFile);
946 try {
947 log.warning(LintCategory.CLASSFILE, (DiagnosticPosition) null, "future.attr",
948 name, version.major, version.minor, majorVersion, minorVersion);
949 } finally {
950 log.useSource(prev);
951 }
952 warnedAttrs.add(name);
953 }
954 }
955 return false;
956 }
957
958 protected abstract void read(Symbol sym, int attrLen);
959
960 protected final Name name;
961 protected final ClassFile.Version version;
962 protected final Set<AttributeKind> kinds;
963 }
964
965 protected Set<AttributeKind> CLASS_ATTRIBUTE =
966 EnumSet.of(AttributeKind.CLASS);
967 protected Set<AttributeKind> MEMBER_ATTRIBUTE =
968 EnumSet.of(AttributeKind.MEMBER);
969 protected Set<AttributeKind> CLASS_OR_MEMBER_ATTRIBUTE =
970 EnumSet.of(AttributeKind.CLASS, AttributeKind.MEMBER);
971
972 protected Map<Name, AttributeReader> attributeReaders = new HashMap<>();
973
974 private void initAttributeReaders() {
975 AttributeReader[] readers = {
976 // v45.3 attributes
977
978 new AttributeReader(names.Code, V45_3, MEMBER_ATTRIBUTE) {
979 protected void read(Symbol sym, int attrLen) {
980 if (readAllOfClassFile || saveParameterNames)
981 ((MethodSymbol)sym).code = readCode(sym);
982 else
983 bp = bp + attrLen;
984 }
985 },
986
987 new AttributeReader(names.ConstantValue, V45_3, MEMBER_ATTRIBUTE) {
988 protected void read(Symbol sym, int attrLen) {
989 Object v = readPool(nextChar());
990 // Ignore ConstantValue attribute if field not final.
991 if ((sym.flags() & FINAL) != 0)
992 ((VarSymbol) sym).setData(v);
993 }
994 },
995
996 new AttributeReader(names.Deprecated, V45_3, CLASS_OR_MEMBER_ATTRIBUTE) {
997 protected void read(Symbol sym, int attrLen) {
998 sym.flags_field |= DEPRECATED;
999 }
1000 },
1001
1002 new AttributeReader(names.Exceptions, V45_3, CLASS_OR_MEMBER_ATTRIBUTE) {
1003 protected void read(Symbol sym, int attrLen) {
1004 int nexceptions = nextChar();
1005 List<Type> thrown = List.nil();
1006 for (int j = 0; j < nexceptions; j++)
1007 thrown = thrown.prepend(readClassSymbol(nextChar()).type);
1008 if (sym.type.getThrownTypes().isEmpty())
1009 sym.type.asMethodType().thrown = thrown.reverse();
1010 }
1011 },
1012
1013 new AttributeReader(names.InnerClasses, V45_3, CLASS_ATTRIBUTE) {
1014 protected void read(Symbol sym, int attrLen) {
1015 ClassSymbol c = (ClassSymbol) sym;
1016 if (currentModule.module_info == c) {
1017 //prevent entering the classes too soon:
1018 skipInnerClasses();
1019 } else {
1020 readInnerClasses(c);
1021 }
1022 }
1023 },
1024
1025 new AttributeReader(names.LocalVariableTable, V45_3, CLASS_OR_MEMBER_ATTRIBUTE) {
1026 protected void read(Symbol sym, int attrLen) {
1027 int newbp = bp + attrLen;
1028 if (saveParameterNames && !sawMethodParameters) {
1029 // Pick up parameter names from the variable table.
1030 // Parameter names are not explicitly identified as such,
1031 // but all parameter name entries in the LocalVariableTable
1032 // have a start_pc of 0. Therefore, we record the name
1033 // indicies of all slots with a start_pc of zero in the
1034 // parameterNameIndicies array.
1035 // Note that this implicitly honors the JVMS spec that
1036 // there may be more than one LocalVariableTable, and that
1037 // there is no specified ordering for the entries.
1038 int numEntries = nextChar();
1039 for (int i = 0; i < numEntries; i++) {
1040 int start_pc = nextChar();
1041 int length = nextChar();
1042 int nameIndex = nextChar();
1043 int sigIndex = nextChar();
1044 int register = nextChar();
1045 if (start_pc == 0) {
1046 // ensure array large enough
1047 if (register >= parameterNameIndices.length) {
1048 int newSize =
1049 Math.max(register + 1, parameterNameIndices.length + 8);
1050 parameterNameIndices =
1051 Arrays.copyOf(parameterNameIndices, newSize);
1052 }
1053 parameterNameIndices[register] = nameIndex;
1054 haveParameterNameIndices = true;
1055 }
1056 }
1057 }
1058 bp = newbp;
1059 }
1060 },
1061
1062 new AttributeReader(names.SourceFile, V45_3, CLASS_ATTRIBUTE) {
1063 protected void read(Symbol sym, int attrLen) {
1064 ClassSymbol c = (ClassSymbol) sym;
1065 Name n = readName(nextChar());
1066 c.sourcefile = new SourceFileObject(n, c.flatname);
1067 // If the class is a toplevel class, originating from a Java source file,
1068 // but the class name does not match the file name, then it is
1069 // an auxiliary class.
1070 String sn = n.toString();
1071 if (c.owner.kind == PCK &&
1072 sn.endsWith(".java") &&
1073 !sn.equals(c.name.toString()+".java")) {
1074 c.flags_field |= AUXILIARY;
1075 }
1076 }
1077 },
1078
1079 new AttributeReader(names.Synthetic, V45_3, CLASS_OR_MEMBER_ATTRIBUTE) {
1080 protected void read(Symbol sym, int attrLen) {
1081 sym.flags_field |= SYNTHETIC;
1082 }
1083 },
1084
1085 // standard v49 attributes
1086
1087 new AttributeReader(names.EnclosingMethod, V49, CLASS_ATTRIBUTE) {
1088 protected void read(Symbol sym, int attrLen) {
1089 int newbp = bp + attrLen;
1090 readEnclosingMethodAttr(sym);
1091 bp = newbp;
1092 }
1093 },
1094
1095 new AttributeReader(names.Signature, V49, CLASS_OR_MEMBER_ATTRIBUTE) {
1096 protected void read(Symbol sym, int attrLen) {
1097 if (sym.kind == TYP) {
1098 ClassSymbol c = (ClassSymbol) sym;
1099 readingClassAttr = true;
1100 try {
1101 ClassType ct1 = (ClassType)c.type;
1102 Assert.check(c == currentOwner);
1103 ct1.typarams_field = readTypeParams(nextChar());
1104 ct1.supertype_field = sigToType();
1105 ListBuffer<Type> is = new ListBuffer<>();
1106 while (sigp != siglimit) is.append(sigToType());
1107 ct1.interfaces_field = is.toList();
1108 } finally {
1109 readingClassAttr = false;
1110 }
1111 } else {
1112 List<Type> thrown = sym.type.getThrownTypes();
1113 sym.type = readType(nextChar());
1114 //- System.err.println(" # " + sym.type);
1115 if (sym.kind == MTH && sym.type.getThrownTypes().isEmpty())
1116 sym.type.asMethodType().thrown = thrown;
1117
1118 }
1119 }
1120 },
1121
1122 // v49 annotation attributes
1123
1124 new AttributeReader(names.AnnotationDefault, V49, CLASS_OR_MEMBER_ATTRIBUTE) {
1125 protected void read(Symbol sym, int attrLen) {
1126 attachAnnotationDefault(sym);
1127 }
1128 },
1129
1130 new AttributeReader(names.RuntimeInvisibleAnnotations, V49, CLASS_OR_MEMBER_ATTRIBUTE) {
1131 protected void read(Symbol sym, int attrLen) {
1132 attachAnnotations(sym);
1133 }
1134 },
1135
1136 new AttributeReader(names.RuntimeInvisibleParameterAnnotations, V49, CLASS_OR_MEMBER_ATTRIBUTE) {
1137 protected void read(Symbol sym, int attrLen) {
1138 attachParameterAnnotations(sym);
1139 }
1140 },
1141
1142 new AttributeReader(names.RuntimeVisibleAnnotations, V49, CLASS_OR_MEMBER_ATTRIBUTE) {
1143 protected void read(Symbol sym, int attrLen) {
1144 attachAnnotations(sym);
1145 }
1146 },
1147
1148 new AttributeReader(names.RuntimeVisibleParameterAnnotations, V49, CLASS_OR_MEMBER_ATTRIBUTE) {
1149 protected void read(Symbol sym, int attrLen) {
1150 attachParameterAnnotations(sym);
1151 }
1152 },
1153
1154 // additional "legacy" v49 attributes, superceded by flags
1155
1156 new AttributeReader(names.Annotation, V49, CLASS_OR_MEMBER_ATTRIBUTE) {
1157 protected void read(Symbol sym, int attrLen) {
1158 sym.flags_field |= ANNOTATION;
1159 }
1160 },
1161
1162 new AttributeReader(names.Bridge, V49, MEMBER_ATTRIBUTE) {
1163 protected void read(Symbol sym, int attrLen) {
1164 sym.flags_field |= BRIDGE;
1165 }
1166 },
1167
1168 new AttributeReader(names.Enum, V49, CLASS_OR_MEMBER_ATTRIBUTE) {
1169 protected void read(Symbol sym, int attrLen) {
1170 sym.flags_field |= ENUM;
1171 }
1172 },
1173
1174 new AttributeReader(names.Varargs, V49, CLASS_OR_MEMBER_ATTRIBUTE) {
1175 protected void read(Symbol sym, int attrLen) {
1176 sym.flags_field |= VARARGS;
1177 }
1178 },
1179
1180 new AttributeReader(names.RuntimeVisibleTypeAnnotations, V52, CLASS_OR_MEMBER_ATTRIBUTE) {
1181 protected void read(Symbol sym, int attrLen) {
1182 attachTypeAnnotations(sym);
1183 }
1184 },
1185
1186 new AttributeReader(names.RuntimeInvisibleTypeAnnotations, V52, CLASS_OR_MEMBER_ATTRIBUTE) {
1187 protected void read(Symbol sym, int attrLen) {
1188 attachTypeAnnotations(sym);
1189 }
1190 },
1191
1192 // The following attributes for a Code attribute are not currently handled
1193 // StackMapTable
1194 // SourceDebugExtension
1195 // LineNumberTable
1196 // LocalVariableTypeTable
1197
1198 // standard v52 attributes
1199
1200 new AttributeReader(names.MethodParameters, V52, MEMBER_ATTRIBUTE) {
1201 protected void read(Symbol sym, int attrlen) {
1202 int newbp = bp + attrlen;
1203 if (saveParameterNames) {
1204 sawMethodParameters = true;
1205 int numEntries = nextByte();
1206 parameterNameIndices = new int[numEntries];
1207 haveParameterNameIndices = true;
1208 for (int i = 0; i < numEntries; i++) {
1209 int nameIndex = nextChar();
1210 int flags = nextChar();
1211 parameterNameIndices[i] = nameIndex;
1212 }
1213 }
1214 bp = newbp;
1215 }
1216 },
1217
1218 // standard v53 attributes
1219
1220 new AttributeReader(names.Module, V53, CLASS_ATTRIBUTE) {
1221 @Override
1222 protected boolean accepts(AttributeKind kind) {
1223 return super.accepts(kind) && allowModules;
1224 }
1225 protected void read(Symbol sym, int attrLen) {
1226 if (sym.kind == TYP && sym.owner.kind == MDL) {
1227 ModuleSymbol msym = (ModuleSymbol) sym.owner;
1228 ListBuffer<Directive> directives = new ListBuffer<>();
1229
1230 ListBuffer<RequiresDirective> requires = new ListBuffer<>();
1231 int nrequires = nextChar();
1232 for (int i = 0; i < nrequires; i++) {
1233 Name name = readName(nextChar());
1234 ModuleSymbol rsym = syms.enterModule(name);
1235 Set<RequiresFlag> flags = readRequiresFlags(nextChar());
1236 requires.add(new RequiresDirective(rsym, flags));
1237 }
1238 msym.requires = requires.toList();
1239 directives.addAll(msym.requires);
1240
1241 ListBuffer<ExportsDirective> exports = new ListBuffer<>();
1242 int nexports = nextChar();
1243 for (int i = 0; i < nexports; i++) {
1244 Name n = readName(nextChar());
1245 PackageSymbol p = syms.enterPackage(currentModule, names.fromUtf(internalize(n)));
1246 int nto = nextChar();
1247 List<ModuleSymbol> to;
1248 if (nto == 0) {
1249 to = null;
1250 } else {
1251 ListBuffer<ModuleSymbol> lb = new ListBuffer<>();
1252 for (int t = 0; t < nto; t++)
1253 lb.append(syms.enterModule(readName(nextChar())));
1254 to = lb.toList();
1255 }
1256 exports.add(new ExportsDirective(p, to));
1257 }
1258 msym.exports = exports.toList();
1259 directives.addAll(msym.exports);
1260
1261 msym.directives = directives.toList();
1262
1263 ListBuffer<InterimUsesDirective> uses = new ListBuffer<>();
1264 int nuses = nextChar();
1265 for (int i = 0; i < nuses; i++) {
1266 Name srvc = readClassName(nextChar());
1267 uses.add(new InterimUsesDirective(srvc));
1268 }
1269 interimUses = uses.toList();
1270
1271 ListBuffer<InterimProvidesDirective> provides = new ListBuffer<>();
1272 int nprovides = nextChar();
1273 for (int i = 0; i < nprovides; i++) {
1274 Name srvc = readClassName(nextChar());
1275 Name impl = readClassName(nextChar());
1276 provides.add(new InterimProvidesDirective(srvc, impl));
1277 }
1278 interimProvides = provides.toList();
1279 }
1280 }
1281 },
1282
1283 new AttributeReader(names.Version, V53, CLASS_ATTRIBUTE) {
1284 @Override
1285 protected boolean accepts(AttributeKind kind) {
1286 return super.accepts(kind) && allowModules;
1287 }
1288 protected void read(Symbol sym, int attrLen) {
1289 if (sym.kind == TYP && sym.owner.kind == MDL) {
1290 ModuleSymbol msym = (ModuleSymbol) sym.owner;
1291 msym.version = readName(nextChar());
1292 }
1293 }
1294 },
1295 };
1296
1297 for (AttributeReader r: readers)
1298 attributeReaders.put(r.name, r);
1299 }
1300
1301 protected void readEnclosingMethodAttr(Symbol sym) {
1302 // sym is a nested class with an "Enclosing Method" attribute
1303 // remove sym from it's current owners scope and place it in
1304 // the scope specified by the attribute
1305 sym.owner.members().remove(sym);
1306 ClassSymbol self = (ClassSymbol)sym;
1307 ClassSymbol c = readClassSymbol(nextChar());
1308 NameAndType nt = readNameAndType(nextChar());
1309
1310 if (c.members_field == null)
1311 throw badClassFile("bad.enclosing.class", self, c);
1312
1313 MethodSymbol m = findMethod(nt, c.members_field, self.flags());
1314 if (nt != null && m == null)
1315 throw badEnclosingMethod(self);
1316
1317 self.name = simpleBinaryName(self.flatname, c.flatname) ;
1318 self.owner = m != null ? m : c;
1319 if (self.name.isEmpty())
1320 self.fullname = names.empty;
1321 else
1322 self.fullname = ClassSymbol.formFullName(self.name, self.owner);
1323
1324 if (m != null) {
1325 ((ClassType)sym.type).setEnclosingType(m.type);
1326 } else if ((self.flags_field & STATIC) == 0) {
1327 ((ClassType)sym.type).setEnclosingType(c.type);
1328 } else {
1329 ((ClassType)sym.type).setEnclosingType(Type.noType);
1330 }
1331 enterTypevars(self);
1332 if (!missingTypeVariables.isEmpty()) {
1333 ListBuffer<Type> typeVars = new ListBuffer<>();
1334 for (Type typevar : missingTypeVariables) {
1335 typeVars.append(findTypeVar(typevar.tsym.name));
1336 }
1337 foundTypeVariables = typeVars.toList();
1338 } else {
1339 foundTypeVariables = List.nil();
1340 }
1341 }
1342
1343 // See java.lang.Class
1344 private Name simpleBinaryName(Name self, Name enclosing) {
1345 String simpleBinaryName = self.toString().substring(enclosing.toString().length());
1346 if (simpleBinaryName.length() < 1 || simpleBinaryName.charAt(0) != '$')
1347 throw badClassFile("bad.enclosing.method", self);
1348 int index = 1;
1349 while (index < simpleBinaryName.length() &&
1350 isAsciiDigit(simpleBinaryName.charAt(index)))
1351 index++;
1352 return names.fromString(simpleBinaryName.substring(index));
1353 }
1354
1355 private MethodSymbol findMethod(NameAndType nt, Scope scope, long flags) {
1356 if (nt == null)
1357 return null;
1358
1359 MethodType type = nt.uniqueType.type.asMethodType();
1360
1361 for (Symbol sym : scope.getSymbolsByName(nt.name)) {
1362 if (sym.kind == MTH && isSameBinaryType(sym.type.asMethodType(), type))
1363 return (MethodSymbol)sym;
1364 }
1365
1366 if (nt.name != names.init)
1367 // not a constructor
1368 return null;
1369 if ((flags & INTERFACE) != 0)
1370 // no enclosing instance
1371 return null;
1372 if (nt.uniqueType.type.getParameterTypes().isEmpty())
1373 // no parameters
1374 return null;
1375
1376 // A constructor of an inner class.
1377 // Remove the first argument (the enclosing instance)
1378 nt.setType(new MethodType(nt.uniqueType.type.getParameterTypes().tail,
1379 nt.uniqueType.type.getReturnType(),
1380 nt.uniqueType.type.getThrownTypes(),
1381 syms.methodClass));
1382 // Try searching again
1383 return findMethod(nt, scope, flags);
1384 }
1385
1386 /** Similar to Types.isSameType but avoids completion */
1387 private boolean isSameBinaryType(MethodType mt1, MethodType mt2) {
1388 List<Type> types1 = types.erasure(mt1.getParameterTypes())
1389 .prepend(types.erasure(mt1.getReturnType()));
1390 List<Type> types2 = mt2.getParameterTypes().prepend(mt2.getReturnType());
1391 while (!types1.isEmpty() && !types2.isEmpty()) {
1392 if (types1.head.tsym != types2.head.tsym)
1393 return false;
1394 types1 = types1.tail;
1395 types2 = types2.tail;
1396 }
1397 return types1.isEmpty() && types2.isEmpty();
1398 }
1399
1400 /**
1401 * Character.isDigit answers <tt>true</tt> to some non-ascii
1402 * digits. This one does not. <b>copied from java.lang.Class</b>
1403 */
1404 private static boolean isAsciiDigit(char c) {
1405 return '0' <= c && c <= '9';
1406 }
1407
1408 /** Read member attributes.
1409 */
1410 void readMemberAttrs(Symbol sym) {
1411 readAttrs(sym, AttributeKind.MEMBER);
1412 }
1413
1414 void readAttrs(Symbol sym, AttributeKind kind) {
1415 char ac = nextChar();
1416 for (int i = 0; i < ac; i++) {
1417 Name attrName = readName(nextChar());
1418 int attrLen = nextInt();
1419 AttributeReader r = attributeReaders.get(attrName);
1420 if (r != null && r.accepts(kind))
1421 r.read(sym, attrLen);
1422 else {
1423 bp = bp + attrLen;
1424 }
1425 }
1426 }
1427
1428 private boolean readingClassAttr = false;
1429 private List<Type> missingTypeVariables = List.nil();
1430 private List<Type> foundTypeVariables = List.nil();
1431
1432 /** Read class attributes.
1433 */
1434 void readClassAttrs(ClassSymbol c) {
1435 readAttrs(c, AttributeKind.CLASS);
1436 }
1437
1438 /** Read code block.
1439 */
1440 Code readCode(Symbol owner) {
1441 nextChar(); // max_stack
1442 nextChar(); // max_locals
1443 final int code_length = nextInt();
1444 bp += code_length;
1445 final char exception_table_length = nextChar();
1446 bp += exception_table_length * 8;
1447 readMemberAttrs(owner);
1448 return null;
1449 }
1450
1451 /************************************************************************
1452 * Reading Java-language annotations
1453 ***********************************************************************/
1454
1455 /** Attach annotations.
1456 */
1457 void attachAnnotations(final Symbol sym) {
1458 int numAttributes = nextChar();
1459 if (numAttributes != 0) {
1460 ListBuffer<CompoundAnnotationProxy> proxies = new ListBuffer<>();
1461 for (int i = 0; i<numAttributes; i++) {
1462 CompoundAnnotationProxy proxy = readCompoundAnnotation();
1463 if (proxy.type.tsym == syms.proprietaryType.tsym)
1464 sym.flags_field |= PROPRIETARY;
1465 else if (proxy.type.tsym == syms.profileType.tsym) {
1466 if (profile != Profile.DEFAULT) {
1467 for (Pair<Name,Attribute> v: proxy.values) {
1468 if (v.fst == names.value && v.snd instanceof Attribute.Constant) {
1469 Attribute.Constant c = (Attribute.Constant) v.snd;
1470 if (c.type == syms.intType && ((Integer) c.value) > profile.value) {
1471 sym.flags_field |= NOT_IN_PROFILE;
1472 }
1473 }
1474 }
1475 }
1476 } else {
1477 if (proxy.type.tsym == syms.annotationTargetType.tsym) {
1478 target = proxy;
1479 } else if (proxy.type.tsym == syms.repeatableType.tsym) {
1480 repeatable = proxy;
1481 } else if (proxy.type.tsym == syms.deprecatedType.tsym) {
1482 sym.flags_field |= DEPRECATED;
1483 for (Pair<Name, Attribute> v : proxy.values) {
1484 if (v.fst == names.forRemoval && v.snd instanceof Attribute.Constant) {
1485 Attribute.Constant c = (Attribute.Constant) v.snd;
1486 if (c.type == syms.booleanType && ((Integer) c.value) != 0) {
1487 sym.flags_field |= DEPRECATED_REMOVAL;
1488 }
1489 }
1490 }
1491 }
1492
1493 proxies.append(proxy);
1494 }
1495 }
1496 annotate.normal(new AnnotationCompleter(sym, proxies.toList()));
1497 }
1498 }
1499
1500 /** Attach parameter annotations.
1501 */
1502 void attachParameterAnnotations(final Symbol method) {
1503 final MethodSymbol meth = (MethodSymbol)method;
1504 int numParameters = buf[bp++] & 0xFF;
1505 List<VarSymbol> parameters = meth.params();
1506 int pnum = 0;
1507 while (parameters.tail != null) {
1508 attachAnnotations(parameters.head);
1509 parameters = parameters.tail;
1510 pnum++;
1511 }
1512 if (pnum != numParameters) {
1513 throw badClassFile("bad.runtime.invisible.param.annotations", meth);
1514 }
1515 }
1516
1517 void attachTypeAnnotations(final Symbol sym) {
1518 int numAttributes = nextChar();
1519 if (numAttributes != 0) {
1520 ListBuffer<TypeAnnotationProxy> proxies = new ListBuffer<>();
1521 for (int i = 0; i < numAttributes; i++)
1522 proxies.append(readTypeAnnotation());
1523 annotate.normal(new TypeAnnotationCompleter(sym, proxies.toList()));
1524 }
1525 }
1526
1527 /** Attach the default value for an annotation element.
1528 */
1529 void attachAnnotationDefault(final Symbol sym) {
1530 final MethodSymbol meth = (MethodSymbol)sym; // only on methods
1531 final Attribute value = readAttributeValue();
1532
1533 // The default value is set later during annotation. It might
1534 // be the case that the Symbol sym is annotated _after_ the
1535 // repeating instances that depend on this default value,
1536 // because of this we set an interim value that tells us this
1537 // element (most likely) has a default.
1538 //
1539 // Set interim value for now, reset just before we do this
1540 // properly at annotate time.
1541 meth.defaultValue = value;
1542 annotate.normal(new AnnotationDefaultCompleter(meth, value));
1543 }
1544
1545 Type readTypeOrClassSymbol(int i) {
1546 // support preliminary jsr175-format class files
1547 if (buf[poolIdx[i]] == CONSTANT_Class)
1548 return readClassSymbol(i).type;
1549 return readType(i);
1550 }
1551 Type readEnumType(int i) {
1552 // support preliminary jsr175-format class files
1553 int index = poolIdx[i];
1554 int length = getChar(index + 1);
1555 if (buf[index + length + 2] != ';')
1556 return enterClass(readName(i)).type;
1557 return readType(i);
1558 }
1559
1560 CompoundAnnotationProxy readCompoundAnnotation() {
1561 Type t = readTypeOrClassSymbol(nextChar());
1562 int numFields = nextChar();
1563 ListBuffer<Pair<Name,Attribute>> pairs = new ListBuffer<>();
1564 for (int i=0; i<numFields; i++) {
1565 Name name = readName(nextChar());
1566 Attribute value = readAttributeValue();
1567 pairs.append(new Pair<>(name, value));
1568 }
1569 return new CompoundAnnotationProxy(t, pairs.toList());
1570 }
1571
1572 TypeAnnotationProxy readTypeAnnotation() {
1573 TypeAnnotationPosition position = readPosition();
1574 CompoundAnnotationProxy proxy = readCompoundAnnotation();
1575
1576 return new TypeAnnotationProxy(proxy, position);
1577 }
1578
1579 TypeAnnotationPosition readPosition() {
1580 int tag = nextByte(); // TargetType tag is a byte
1581
1582 if (!TargetType.isValidTargetTypeValue(tag))
1583 throw badClassFile("bad.type.annotation.value", String.format("0x%02X", tag));
1584
1585 TargetType type = TargetType.fromTargetTypeValue(tag);
1586
1587 switch (type) {
1588 // instanceof
1589 case INSTANCEOF: {
1590 final int offset = nextChar();
1591 final TypeAnnotationPosition position =
1592 TypeAnnotationPosition.instanceOf(readTypePath());
1593 position.offset = offset;
1594 return position;
1595 }
1596 // new expression
1597 case NEW: {
1598 final int offset = nextChar();
1599 final TypeAnnotationPosition position =
1600 TypeAnnotationPosition.newObj(readTypePath());
1601 position.offset = offset;
1602 return position;
1603 }
1604 // constructor/method reference receiver
1605 case CONSTRUCTOR_REFERENCE: {
1606 final int offset = nextChar();
1607 final TypeAnnotationPosition position =
1608 TypeAnnotationPosition.constructorRef(readTypePath());
1609 position.offset = offset;
1610 return position;
1611 }
1612 case METHOD_REFERENCE: {
1613 final int offset = nextChar();
1614 final TypeAnnotationPosition position =
1615 TypeAnnotationPosition.methodRef(readTypePath());
1616 position.offset = offset;
1617 return position;
1618 }
1619 // local variable
1620 case LOCAL_VARIABLE: {
1621 final int table_length = nextChar();
1622 final int[] newLvarOffset = new int[table_length];
1623 final int[] newLvarLength = new int[table_length];
1624 final int[] newLvarIndex = new int[table_length];
1625
1626 for (int i = 0; i < table_length; ++i) {
1627 newLvarOffset[i] = nextChar();
1628 newLvarLength[i] = nextChar();
1629 newLvarIndex[i] = nextChar();
1630 }
1631
1632 final TypeAnnotationPosition position =
1633 TypeAnnotationPosition.localVariable(readTypePath());
1634 position.lvarOffset = newLvarOffset;
1635 position.lvarLength = newLvarLength;
1636 position.lvarIndex = newLvarIndex;
1637 return position;
1638 }
1639 // resource variable
1640 case RESOURCE_VARIABLE: {
1641 final int table_length = nextChar();
1642 final int[] newLvarOffset = new int[table_length];
1643 final int[] newLvarLength = new int[table_length];
1644 final int[] newLvarIndex = new int[table_length];
1645
1646 for (int i = 0; i < table_length; ++i) {
1647 newLvarOffset[i] = nextChar();
1648 newLvarLength[i] = nextChar();
1649 newLvarIndex[i] = nextChar();
1650 }
1651
1652 final TypeAnnotationPosition position =
1653 TypeAnnotationPosition.resourceVariable(readTypePath());
1654 position.lvarOffset = newLvarOffset;
1655 position.lvarLength = newLvarLength;
1656 position.lvarIndex = newLvarIndex;
1657 return position;
1658 }
1659 // exception parameter
1660 case EXCEPTION_PARAMETER: {
1661 final int exception_index = nextChar();
1662 final TypeAnnotationPosition position =
1663 TypeAnnotationPosition.exceptionParameter(readTypePath());
1664 position.setExceptionIndex(exception_index);
1665 return position;
1666 }
1667 // method receiver
1668 case METHOD_RECEIVER:
1669 return TypeAnnotationPosition.methodReceiver(readTypePath());
1670 // type parameter
1671 case CLASS_TYPE_PARAMETER: {
1672 final int parameter_index = nextByte();
1673 return TypeAnnotationPosition
1674 .typeParameter(readTypePath(), parameter_index);
1675 }
1676 case METHOD_TYPE_PARAMETER: {
1677 final int parameter_index = nextByte();
1678 return TypeAnnotationPosition
1679 .methodTypeParameter(readTypePath(), parameter_index);
1680 }
1681 // type parameter bound
1682 case CLASS_TYPE_PARAMETER_BOUND: {
1683 final int parameter_index = nextByte();
1684 final int bound_index = nextByte();
1685 return TypeAnnotationPosition
1686 .typeParameterBound(readTypePath(), parameter_index,
1687 bound_index);
1688 }
1689 case METHOD_TYPE_PARAMETER_BOUND: {
1690 final int parameter_index = nextByte();
1691 final int bound_index = nextByte();
1692 return TypeAnnotationPosition
1693 .methodTypeParameterBound(readTypePath(), parameter_index,
1694 bound_index);
1695 }
1696 // class extends or implements clause
1697 case CLASS_EXTENDS: {
1698 final int type_index = nextChar();
1699 return TypeAnnotationPosition.classExtends(readTypePath(),
1700 type_index);
1701 }
1702 // throws
1703 case THROWS: {
1704 final int type_index = nextChar();
1705 return TypeAnnotationPosition.methodThrows(readTypePath(),
1706 type_index);
1707 }
1708 // method parameter
1709 case METHOD_FORMAL_PARAMETER: {
1710 final int parameter_index = nextByte();
1711 return TypeAnnotationPosition.methodParameter(readTypePath(),
1712 parameter_index);
1713 }
1714 // type cast
1715 case CAST: {
1716 final int offset = nextChar();
1717 final int type_index = nextByte();
1718 final TypeAnnotationPosition position =
1719 TypeAnnotationPosition.typeCast(readTypePath(), type_index);
1720 position.offset = offset;
1721 return position;
1722 }
1723 // method/constructor/reference type argument
1724 case CONSTRUCTOR_INVOCATION_TYPE_ARGUMENT: {
1725 final int offset = nextChar();
1726 final int type_index = nextByte();
1727 final TypeAnnotationPosition position = TypeAnnotationPosition
1728 .constructorInvocationTypeArg(readTypePath(), type_index);
1729 position.offset = offset;
1730 return position;
1731 }
1732 case METHOD_INVOCATION_TYPE_ARGUMENT: {
1733 final int offset = nextChar();
1734 final int type_index = nextByte();
1735 final TypeAnnotationPosition position = TypeAnnotationPosition
1736 .methodInvocationTypeArg(readTypePath(), type_index);
1737 position.offset = offset;
1738 return position;
1739 }
1740 case CONSTRUCTOR_REFERENCE_TYPE_ARGUMENT: {
1741 final int offset = nextChar();
1742 final int type_index = nextByte();
1743 final TypeAnnotationPosition position = TypeAnnotationPosition
1744 .constructorRefTypeArg(readTypePath(), type_index);
1745 position.offset = offset;
1746 return position;
1747 }
1748 case METHOD_REFERENCE_TYPE_ARGUMENT: {
1749 final int offset = nextChar();
1750 final int type_index = nextByte();
1751 final TypeAnnotationPosition position = TypeAnnotationPosition
1752 .methodRefTypeArg(readTypePath(), type_index);
1753 position.offset = offset;
1754 return position;
1755 }
1756 // We don't need to worry about these
1757 case METHOD_RETURN:
1758 return TypeAnnotationPosition.methodReturn(readTypePath());
1759 case FIELD:
1760 return TypeAnnotationPosition.field(readTypePath());
1761 case UNKNOWN:
1762 throw new AssertionError("jvm.ClassReader: UNKNOWN target type should never occur!");
1763 default:
1764 throw new AssertionError("jvm.ClassReader: Unknown target type for position: " + type);
1765 }
1766 }
1767
1768 List<TypeAnnotationPosition.TypePathEntry> readTypePath() {
1769 int len = nextByte();
1770 ListBuffer<Integer> loc = new ListBuffer<>();
1771 for (int i = 0; i < len * TypeAnnotationPosition.TypePathEntry.bytesPerEntry; ++i)
1772 loc = loc.append(nextByte());
1773
1774 return TypeAnnotationPosition.getTypePathFromBinary(loc.toList());
1775
1776 }
1777
1778 Attribute readAttributeValue() {
1779 char c = (char) buf[bp++];
1780 switch (c) {
1781 case 'B':
1782 return new Attribute.Constant(syms.byteType, readPool(nextChar()));
1783 case 'C':
1784 return new Attribute.Constant(syms.charType, readPool(nextChar()));
1785 case 'D':
1786 return new Attribute.Constant(syms.doubleType, readPool(nextChar()));
1787 case 'F':
1788 return new Attribute.Constant(syms.floatType, readPool(nextChar()));
1789 case 'I':
1790 return new Attribute.Constant(syms.intType, readPool(nextChar()));
1791 case 'J':
1792 return new Attribute.Constant(syms.longType, readPool(nextChar()));
1793 case 'S':
1794 return new Attribute.Constant(syms.shortType, readPool(nextChar()));
1795 case 'Z':
1796 return new Attribute.Constant(syms.booleanType, readPool(nextChar()));
1797 case 's':
1798 return new Attribute.Constant(syms.stringType, readPool(nextChar()).toString());
1799 case 'e':
1800 return new EnumAttributeProxy(readEnumType(nextChar()), readName(nextChar()));
1801 case 'c':
1802 return new Attribute.Class(types, readTypeOrClassSymbol(nextChar()));
1803 case '[': {
1804 int n = nextChar();
1805 ListBuffer<Attribute> l = new ListBuffer<>();
1806 for (int i=0; i<n; i++)
1807 l.append(readAttributeValue());
1808 return new ArrayAttributeProxy(l.toList());
1809 }
1810 case '@':
1811 return readCompoundAnnotation();
1812 default:
1813 throw new AssertionError("unknown annotation tag '" + c + "'");
1814 }
1815 }
1816
1817 interface ProxyVisitor extends Attribute.Visitor {
1818 void visitEnumAttributeProxy(EnumAttributeProxy proxy);
1819 void visitArrayAttributeProxy(ArrayAttributeProxy proxy);
1820 void visitCompoundAnnotationProxy(CompoundAnnotationProxy proxy);
1821 }
1822
1823 static class EnumAttributeProxy extends Attribute {
1824 Type enumType;
1825 Name enumerator;
1826 public EnumAttributeProxy(Type enumType, Name enumerator) {
1827 super(null);
1828 this.enumType = enumType;
1829 this.enumerator = enumerator;
1830 }
1831 public void accept(Visitor v) { ((ProxyVisitor)v).visitEnumAttributeProxy(this); }
1832 @Override @DefinedBy(Api.LANGUAGE_MODEL)
1833 public String toString() {
1834 return "/*proxy enum*/" + enumType + "." + enumerator;
1835 }
1836 }
1837
1838 static class ArrayAttributeProxy extends Attribute {
1839 List<Attribute> values;
1840 ArrayAttributeProxy(List<Attribute> values) {
1841 super(null);
1842 this.values = values;
1843 }
1844 public void accept(Visitor v) { ((ProxyVisitor)v).visitArrayAttributeProxy(this); }
1845 @Override @DefinedBy(Api.LANGUAGE_MODEL)
1846 public String toString() {
1847 return "{" + values + "}";
1848 }
1849 }
1850
1851 /** A temporary proxy representing a compound attribute.
1852 */
1853 static class CompoundAnnotationProxy extends Attribute {
1854 final List<Pair<Name,Attribute>> values;
1855 public CompoundAnnotationProxy(Type type,
1856 List<Pair<Name,Attribute>> values) {
1857 super(type);
1858 this.values = values;
1859 }
1860 public void accept(Visitor v) { ((ProxyVisitor)v).visitCompoundAnnotationProxy(this); }
1861 @Override @DefinedBy(Api.LANGUAGE_MODEL)
1862 public String toString() {
1863 StringBuilder buf = new StringBuilder();
1864 buf.append("@");
1865 buf.append(type.tsym.getQualifiedName());
1866 buf.append("/*proxy*/{");
1867 boolean first = true;
1868 for (List<Pair<Name,Attribute>> v = values;
1869 v.nonEmpty(); v = v.tail) {
1870 Pair<Name,Attribute> value = v.head;
1871 if (!first) buf.append(",");
1872 first = false;
1873 buf.append(value.fst);
1874 buf.append("=");
1875 buf.append(value.snd);
1876 }
1877 buf.append("}");
1878 return buf.toString();
1879 }
1880 }
1881
1882 /** A temporary proxy representing a type annotation.
1883 */
1884 static class TypeAnnotationProxy {
1885 final CompoundAnnotationProxy compound;
1886 final TypeAnnotationPosition position;
1887 public TypeAnnotationProxy(CompoundAnnotationProxy compound,
1888 TypeAnnotationPosition position) {
1889 this.compound = compound;
1890 this.position = position;
1891 }
1892 }
1893
1894 class AnnotationDeproxy implements ProxyVisitor {
1895 private ClassSymbol requestingOwner;
1896
1897 AnnotationDeproxy(ClassSymbol owner) {
1898 this.requestingOwner = owner;
1899 }
1900
1901 List<Attribute.Compound> deproxyCompoundList(List<CompoundAnnotationProxy> pl) {
1902 // also must fill in types!!!!
1903 ListBuffer<Attribute.Compound> buf = new ListBuffer<>();
1904 for (List<CompoundAnnotationProxy> l = pl; l.nonEmpty(); l=l.tail) {
1905 buf.append(deproxyCompound(l.head));
1906 }
1907 return buf.toList();
1908 }
1909
1910 Attribute.Compound deproxyCompound(CompoundAnnotationProxy a) {
1911 ListBuffer<Pair<Symbol.MethodSymbol,Attribute>> buf = new ListBuffer<>();
1912 for (List<Pair<Name,Attribute>> l = a.values;
1913 l.nonEmpty();
1914 l = l.tail) {
1915 MethodSymbol meth = findAccessMethod(a.type, l.head.fst);
1916 buf.append(new Pair<>(meth, deproxy(meth.type.getReturnType(), l.head.snd)));
1917 }
1918 return new Attribute.Compound(a.type, buf.toList());
1919 }
1920
1921 MethodSymbol findAccessMethod(Type container, Name name) {
1922 CompletionFailure failure = null;
1923 try {
1924 for (Symbol sym : container.tsym.members().getSymbolsByName(name)) {
1925 if (sym.kind == MTH && sym.type.getParameterTypes().length() == 0)
1926 return (MethodSymbol) sym;
1927 }
1928 } catch (CompletionFailure ex) {
1929 failure = ex;
1930 }
1931 // The method wasn't found: emit a warning and recover
1932 JavaFileObject prevSource = log.useSource(requestingOwner.classfile);
1933 try {
1934 if (lintClassfile) {
1935 if (failure == null) {
1936 log.warning("annotation.method.not.found",
1937 container,
1938 name);
1939 } else {
1940 log.warning("annotation.method.not.found.reason",
1941 container,
1942 name,
1943 failure.getDetailValue());//diagnostic, if present
1944 }
1945 }
1946 } finally {
1947 log.useSource(prevSource);
1948 }
1949 // Construct a new method type and symbol. Use bottom
1950 // type (typeof null) as return type because this type is
1951 // a subtype of all reference types and can be converted
1952 // to primitive types by unboxing.
1953 MethodType mt = new MethodType(List.<Type>nil(),
1954 syms.botType,
1955 List.<Type>nil(),
1956 syms.methodClass);
1957 return new MethodSymbol(PUBLIC | ABSTRACT, name, mt, container.tsym);
1958 }
1959
1960 Attribute result;
1961 Type type;
1962 Attribute deproxy(Type t, Attribute a) {
1963 Type oldType = type;
1964 try {
1965 type = t;
1966 a.accept(this);
1967 return result;
1968 } finally {
1969 type = oldType;
1970 }
1971 }
1972
1973 // implement Attribute.Visitor below
1974
1975 public void visitConstant(Attribute.Constant value) {
1976 // assert value.type == type;
1977 result = value;
1978 }
1979
1980 public void visitClass(Attribute.Class clazz) {
1981 result = clazz;
1982 }
1983
1984 public void visitEnum(Attribute.Enum e) {
1985 throw new AssertionError(); // shouldn't happen
1986 }
1987
1988 public void visitCompound(Attribute.Compound compound) {
1989 throw new AssertionError(); // shouldn't happen
1990 }
1991
1992 public void visitArray(Attribute.Array array) {
1993 throw new AssertionError(); // shouldn't happen
1994 }
1995
1996 public void visitError(Attribute.Error e) {
1997 throw new AssertionError(); // shouldn't happen
1998 }
1999
2000 public void visitEnumAttributeProxy(EnumAttributeProxy proxy) {
2001 // type.tsym.flatName() should == proxy.enumFlatName
2002 TypeSymbol enumTypeSym = proxy.enumType.tsym;
2003 VarSymbol enumerator = null;
2004 CompletionFailure failure = null;
2005 try {
2006 for (Symbol sym : enumTypeSym.members().getSymbolsByName(proxy.enumerator)) {
2007 if (sym.kind == VAR) {
2008 enumerator = (VarSymbol)sym;
2009 break;
2010 }
2011 }
2012 }
2013 catch (CompletionFailure ex) {
2014 failure = ex;
2015 }
2016 if (enumerator == null) {
2017 if (failure != null) {
2018 log.warning("unknown.enum.constant.reason",
2019 currentClassFile, enumTypeSym, proxy.enumerator,
2020 failure.getDiagnostic());
2021 } else {
2022 log.warning("unknown.enum.constant",
2023 currentClassFile, enumTypeSym, proxy.enumerator);
2024 }
2025 result = new Attribute.Enum(enumTypeSym.type,
2026 new VarSymbol(0, proxy.enumerator, syms.botType, enumTypeSym));
2027 } else {
2028 result = new Attribute.Enum(enumTypeSym.type, enumerator);
2029 }
2030 }
2031
2032 public void visitArrayAttributeProxy(ArrayAttributeProxy proxy) {
2033 int length = proxy.values.length();
2034 Attribute[] ats = new Attribute[length];
2035 Type elemtype = types.elemtype(type);
2036 int i = 0;
2037 for (List<Attribute> p = proxy.values; p.nonEmpty(); p = p.tail) {
2038 ats[i++] = deproxy(elemtype, p.head);
2039 }
2040 result = new Attribute.Array(type, ats);
2041 }
2042
2043 public void visitCompoundAnnotationProxy(CompoundAnnotationProxy proxy) {
2044 result = deproxyCompound(proxy);
2045 }
2046 }
2047
2048 class AnnotationDefaultCompleter extends AnnotationDeproxy implements Runnable {
2049 final MethodSymbol sym;
2050 final Attribute value;
2051 final JavaFileObject classFile = currentClassFile;
2052
2053 AnnotationDefaultCompleter(MethodSymbol sym, Attribute value) {
2054 super(currentOwner.kind == MTH
2055 ? currentOwner.enclClass() : (ClassSymbol)currentOwner);
2056 this.sym = sym;
2057 this.value = value;
2058 }
2059
2060 @Override
2061 public void run() {
2062 JavaFileObject previousClassFile = currentClassFile;
2063 try {
2064 // Reset the interim value set earlier in
2065 // attachAnnotationDefault().
2066 sym.defaultValue = null;
2067 currentClassFile = classFile;
2068 sym.defaultValue = deproxy(sym.type.getReturnType(), value);
2069 } finally {
2070 currentClassFile = previousClassFile;
2071 }
2072 }
2073
2074 @Override
2075 public String toString() {
2076 return " ClassReader store default for " + sym.owner + "." + sym + " is " + value;
2077 }
2078 }
2079
2080 class AnnotationCompleter extends AnnotationDeproxy implements Runnable {
2081 final Symbol sym;
2082 final List<CompoundAnnotationProxy> l;
2083 final JavaFileObject classFile;
2084
2085 AnnotationCompleter(Symbol sym, List<CompoundAnnotationProxy> l) {
2086 super(currentOwner.kind == MTH
2087 ? currentOwner.enclClass() : (ClassSymbol)currentOwner);
2088 this.sym = sym;
2089 this.l = l;
2090 this.classFile = currentClassFile;
2091 }
2092
2093 @Override
2094 public void run() {
2095 JavaFileObject previousClassFile = currentClassFile;
2096 try {
2097 currentClassFile = classFile;
2098 List<Attribute.Compound> newList = deproxyCompoundList(l);
2099 if (sym.annotationsPendingCompletion()) {
2100 sym.setDeclarationAttributes(newList);
2101 } else {
2102 sym.appendAttributes(newList);
2103 }
2104 } finally {
2105 currentClassFile = previousClassFile;
2106 }
2107 }
2108
2109 @Override
2110 public String toString() {
2111 return " ClassReader annotate " + sym.owner + "." + sym + " with " + l;
2112 }
2113 }
2114
2115 class TypeAnnotationCompleter extends AnnotationCompleter {
2116
2117 List<TypeAnnotationProxy> proxies;
2118
2119 TypeAnnotationCompleter(Symbol sym,
2120 List<TypeAnnotationProxy> proxies) {
2121 super(sym, List.<CompoundAnnotationProxy>nil());
2122 this.proxies = proxies;
2123 }
2124
2125 List<Attribute.TypeCompound> deproxyTypeCompoundList(List<TypeAnnotationProxy> proxies) {
2126 ListBuffer<Attribute.TypeCompound> buf = new ListBuffer<>();
2127 for (TypeAnnotationProxy proxy: proxies) {
2128 Attribute.Compound compound = deproxyCompound(proxy.compound);
2129 Attribute.TypeCompound typeCompound = new Attribute.TypeCompound(compound, proxy.position);
2130 buf.add(typeCompound);
2131 }
2132 return buf.toList();
2133 }
2134
2135 @Override
2136 public void run() {
2137 JavaFileObject previousClassFile = currentClassFile;
2138 try {
2139 currentClassFile = classFile;
2140 List<Attribute.TypeCompound> newList = deproxyTypeCompoundList(proxies);
2141 sym.setTypeAttributes(newList.prependList(sym.getRawTypeAttributes()));
2142 } finally {
2143 currentClassFile = previousClassFile;
2144 }
2145 }
2146 }
2147
2148
2149 /************************************************************************
2150 * Reading Symbols
2151 ***********************************************************************/
2152
2153 /** Read a field.
2154 */
2155 VarSymbol readField() {
2156 long flags = adjustFieldFlags(nextChar());
2157 Name name = readName(nextChar());
2158 Type type = readType(nextChar());
2159 VarSymbol v = new VarSymbol(flags, name, type, currentOwner);
2160 readMemberAttrs(v);
2161 return v;
2162 }
2163
2164 /** Read a method.
2165 */
2166 MethodSymbol readMethod() {
2167 long flags = adjustMethodFlags(nextChar());
2168 Name name = readName(nextChar());
2169 Type type = readType(nextChar());
2170 if (currentOwner.isInterface() &&
2171 (flags & ABSTRACT) == 0 && !name.equals(names.clinit)) {
2172 if (majorVersion > Version.V52.major ||
2173 (majorVersion == Version.V52.major && minorVersion >= Version.V52.minor)) {
2174 if ((flags & STATIC) == 0) {
2175 currentOwner.flags_field |= DEFAULT;
2176 flags |= DEFAULT | ABSTRACT;
2177 }
2178 } else {
2179 //protect against ill-formed classfiles
2180 throw badClassFile((flags & STATIC) == 0 ? "invalid.default.interface" : "invalid.static.interface",
2181 Integer.toString(majorVersion),
2182 Integer.toString(minorVersion));
2183 }
2184 }
2185 if (name == names.init && currentOwner.hasOuterInstance()) {
2186 // Sometimes anonymous classes don't have an outer
2187 // instance, however, there is no reliable way to tell so
2188 // we never strip this$n
2189 if (!currentOwner.name.isEmpty())
2190 type = new MethodType(adjustMethodParams(flags, type.getParameterTypes()),
2191 type.getReturnType(),
2192 type.getThrownTypes(),
2193 syms.methodClass);
2194 }
2195 MethodSymbol m = new MethodSymbol(flags, name, type, currentOwner);
2196 if (types.isSignaturePolymorphic(m)) {
2197 m.flags_field |= SIGNATURE_POLYMORPHIC;
2198 }
2199 if (saveParameterNames)
2200 initParameterNames(m);
2201 Symbol prevOwner = currentOwner;
2202 currentOwner = m;
2203 try {
2204 readMemberAttrs(m);
2205 } finally {
2206 currentOwner = prevOwner;
2207 }
2208 if (saveParameterNames)
2209 setParameterNames(m, type);
2210
2211 if ((flags & VARARGS) != 0) {
2212 final Type last = type.getParameterTypes().last();
2213 if (last == null || !last.hasTag(ARRAY)) {
2214 m.flags_field &= ~VARARGS;
2215 throw badClassFile("malformed.vararg.method", m);
2216 }
2217 }
2218
2219 return m;
2220 }
2221
2222 private List<Type> adjustMethodParams(long flags, List<Type> args) {
2223 boolean isVarargs = (flags & VARARGS) != 0;
2224 if (isVarargs) {
2225 Type varargsElem = args.last();
2226 ListBuffer<Type> adjustedArgs = new ListBuffer<>();
2227 for (Type t : args) {
2228 adjustedArgs.append(t != varargsElem ?
2229 t :
2230 ((ArrayType)t).makeVarargs());
2231 }
2232 args = adjustedArgs.toList();
2233 }
2234 return args.tail;
2235 }
2236
2237 /**
2238 * Init the parameter names array.
2239 * Parameter names are currently inferred from the names in the
2240 * LocalVariableTable attributes of a Code attribute.
2241 * (Note: this means parameter names are currently not available for
2242 * methods without a Code attribute.)
2243 * This method initializes an array in which to store the name indexes
2244 * of parameter names found in LocalVariableTable attributes. It is
2245 * slightly supersized to allow for additional slots with a start_pc of 0.
2246 */
2247 void initParameterNames(MethodSymbol sym) {
2248 // make allowance for synthetic parameters.
2249 final int excessSlots = 4;
2250 int expectedParameterSlots =
2251 Code.width(sym.type.getParameterTypes()) + excessSlots;
2252 if (parameterNameIndices == null
2253 || parameterNameIndices.length < expectedParameterSlots) {
2254 parameterNameIndices = new int[expectedParameterSlots];
2255 } else
2256 Arrays.fill(parameterNameIndices, 0);
2257 haveParameterNameIndices = false;
2258 sawMethodParameters = false;
2259 }
2260
2261 /**
2262 * Set the parameter names for a symbol from the name index in the
2263 * parameterNameIndicies array. The type of the symbol may have changed
2264 * while reading the method attributes (see the Signature attribute).
2265 * This may be because of generic information or because anonymous
2266 * synthetic parameters were added. The original type (as read from
2267 * the method descriptor) is used to help guess the existence of
2268 * anonymous synthetic parameters.
2269 * On completion, sym.savedParameter names will either be null (if
2270 * no parameter names were found in the class file) or will be set to a
2271 * list of names, one per entry in sym.type.getParameterTypes, with
2272 * any missing names represented by the empty name.
2273 */
2274 void setParameterNames(MethodSymbol sym, Type jvmType) {
2275 // if no names were found in the class file, there's nothing more to do
2276 if (!haveParameterNameIndices)
2277 return;
2278 // If we get parameter names from MethodParameters, then we
2279 // don't need to skip.
2280 int firstParam = 0;
2281 if (!sawMethodParameters) {
2282 firstParam = ((sym.flags() & STATIC) == 0) ? 1 : 0;
2283 // the code in readMethod may have skipped the first
2284 // parameter when setting up the MethodType. If so, we
2285 // make a corresponding allowance here for the position of
2286 // the first parameter. Note that this assumes the
2287 // skipped parameter has a width of 1 -- i.e. it is not
2288 // a double width type (long or double.)
2289 if (sym.name == names.init && currentOwner.hasOuterInstance()) {
2290 // Sometimes anonymous classes don't have an outer
2291 // instance, however, there is no reliable way to tell so
2292 // we never strip this$n
2293 if (!currentOwner.name.isEmpty())
2294 firstParam += 1;
2295 }
2296
2297 if (sym.type != jvmType) {
2298 // reading the method attributes has caused the
2299 // symbol's type to be changed. (i.e. the Signature
2300 // attribute.) This may happen if there are hidden
2301 // (synthetic) parameters in the descriptor, but not
2302 // in the Signature. The position of these hidden
2303 // parameters is unspecified; for now, assume they are
2304 // at the beginning, and so skip over them. The
2305 // primary case for this is two hidden parameters
2306 // passed into Enum constructors.
2307 int skip = Code.width(jvmType.getParameterTypes())
2308 - Code.width(sym.type.getParameterTypes());
2309 firstParam += skip;
2310 }
2311 }
2312 List<Name> paramNames = List.nil();
2313 int index = firstParam;
2314 for (Type t: sym.type.getParameterTypes()) {
2315 int nameIdx = (index < parameterNameIndices.length
2316 ? parameterNameIndices[index] : 0);
2317 Name name = nameIdx == 0 ? names.empty : readName(nameIdx);
2318 paramNames = paramNames.prepend(name);
2319 index += Code.width(t);
2320 }
2321 sym.savedParameterNames = paramNames.reverse();
2322 }
2323
2324 /**
2325 * skip n bytes
2326 */
2327 void skipBytes(int n) {
2328 bp = bp + n;
2329 }
2330
2331 /** Skip a field or method
2332 */
2333 void skipMember() {
2334 bp = bp + 6;
2335 char ac = nextChar();
2336 for (int i = 0; i < ac; i++) {
2337 bp = bp + 2;
2338 int attrLen = nextInt();
2339 bp = bp + attrLen;
2340 }
2341 }
2342
2343 void skipInnerClasses() {
2344 int n = nextChar();
2345 for (int i = 0; i < n; i++) {
2346 nextChar();
2347 nextChar();
2348 nextChar();
2349 nextChar();
2350 }
2351 }
2352
2353 /** Enter type variables of this classtype and all enclosing ones in
2354 * `typevars'.
2355 */
2356 protected void enterTypevars(Type t) {
2357 if (t.getEnclosingType() != null && t.getEnclosingType().hasTag(CLASS))
2358 enterTypevars(t.getEnclosingType());
2359 for (List<Type> xs = t.getTypeArguments(); xs.nonEmpty(); xs = xs.tail)
2360 typevars.enter(xs.head.tsym);
2361 }
2362
2363 protected void enterTypevars(Symbol sym) {
2364 if (sym.owner.kind == MTH) {
2365 enterTypevars(sym.owner);
2366 enterTypevars(sym.owner.owner);
2367 }
2368 enterTypevars(sym.type);
2369 }
2370
2371 protected ClassSymbol enterClass(Name name) {
2372 return syms.enterClass(currentModule, name);
2373 }
2374
2375 protected ClassSymbol enterClass(Name name, TypeSymbol owner) {
2376 return syms.enterClass(currentModule, name, owner);
2377 }
2378
2379 /** Read contents of a given class symbol `c'. Both external and internal
2380 * versions of an inner class are read.
2381 */
2382 void readClass(ClassSymbol c) {
2383 ClassType ct = (ClassType)c.type;
2384
2385 // allocate scope for members
2386 c.members_field = WriteableScope.create(c);
2387
2388 // prepare type variable table
2389 typevars = typevars.dup(currentOwner);
2390 if (ct.getEnclosingType().hasTag(CLASS))
2391 enterTypevars(ct.getEnclosingType());
2392
2393 // read flags, or skip if this is an inner class
2394 long f = nextChar();
2395 long flags = adjustClassFlags(f);
2396 if ((flags & MODULE) == 0) {
2397 if (c.owner.kind == PCK) c.flags_field = flags;
2398 // read own class name and check that it matches
2399 currentModule = c.packge().modle;
2400 ClassSymbol self = readClassSymbol(nextChar());
2401 if (c != self) {
2402 throw badClassFile("class.file.wrong.class",
2403 self.flatname);
2404 }
2405 } else {
2406 c.flags_field = flags;
2407 Name modInfoName = readModuleInfoName(nextChar());
2408 currentModule = (ModuleSymbol) c.owner;
2409 if (currentModule.name.append('.', names.module_info) != modInfoName) {
2410 //strip trailing .module-info, if exists:
2411 int modInfoStart = modInfoName.length() - names.module_info.length();
2412 modInfoName = modInfoName.subName(modInfoStart, modInfoName.length()) == names.module_info &&
2413 modInfoName.charAt(modInfoStart - 1) == '.' ?
2414 modInfoName.subName(0, modInfoStart - 1) : modInfoName;
2415 throw badClassFile("module.name.mismatch", modInfoName, currentModule.name);
2416 }
2417 }
2418
2419 // class attributes must be read before class
2420 // skip ahead to read class attributes
2421 int startbp = bp;
2422 nextChar();
2423 char interfaceCount = nextChar();
2424 bp += interfaceCount * 2;
2425 char fieldCount = nextChar();
2426 for (int i = 0; i < fieldCount; i++) skipMember();
2427 char methodCount = nextChar();
2428 for (int i = 0; i < methodCount; i++) skipMember();
2429 readClassAttrs(c);
2430
2431 if (readAllOfClassFile) {
2432 for (int i = 1; i < poolObj.length; i++) readPool(i);
2433 c.pool = new Pool(poolObj.length, poolObj, types);
2434 }
2435
2436 // reset and read rest of classinfo
2437 bp = startbp;
2438 int n = nextChar();
2439 if ((flags & MODULE) != 0 && n > 0) {
2440 throw badClassFile("module.info.invalid.super.class");
2441 }
2442 if (ct.supertype_field == null)
2443 ct.supertype_field = (n == 0)
2444 ? Type.noType
2445 : readClassSymbol(n).erasure(types);
2446 n = nextChar();
2447 List<Type> is = List.nil();
2448 for (int i = 0; i < n; i++) {
2449 Type _inter = readClassSymbol(nextChar()).erasure(types);
2450 is = is.prepend(_inter);
2451 }
2452 if (ct.interfaces_field == null)
2453 ct.interfaces_field = is.reverse();
2454
2455 Assert.check(fieldCount == nextChar());
2456 for (int i = 0; i < fieldCount; i++) enterMember(c, readField());
2457 Assert.check(methodCount == nextChar());
2458 for (int i = 0; i < methodCount; i++) enterMember(c, readMethod());
2459
2460 typevars = typevars.leave();
2461 }
2462
2463 /** Read inner class info. For each inner/outer pair allocate a
2464 * member class.
2465 */
2466 void readInnerClasses(ClassSymbol c) {
2467 int n = nextChar();
2468 for (int i = 0; i < n; i++) {
2469 nextChar(); // skip inner class symbol
2470 ClassSymbol outer = readClassSymbol(nextChar());
2471 Name name = readName(nextChar());
2472 if (name == null) name = names.empty;
2473 long flags = adjustClassFlags(nextChar());
2474 if (outer != null) { // we have a member class
2475 if (name == names.empty)
2476 name = names.one;
2477 ClassSymbol member = enterClass(name, outer);
2478 if ((flags & STATIC) == 0) {
2479 ((ClassType)member.type).setEnclosingType(outer.type);
2480 if (member.erasure_field != null)
2481 ((ClassType)member.erasure_field).setEnclosingType(types.erasure(outer.type));
2482 }
2483 if (c == outer) {
2484 member.flags_field = flags;
2485 enterMember(c, member);
2486 }
2487 }
2488 }
2489 }
2490
2491 /** Read a class definition from the bytes in buf.
2492 */
2493 private void readClassBuffer(ClassSymbol c) throws IOException {
2494 int magic = nextInt();
2495 if (magic != JAVA_MAGIC)
2496 throw badClassFile("illegal.start.of.class.file");
2497
2498 minorVersion = nextChar();
2499 majorVersion = nextChar();
2500 int maxMajor = Version.MAX().major;
2501 int maxMinor = Version.MAX().minor;
2502 if (majorVersion > maxMajor ||
2503 majorVersion * 1000 + minorVersion <
2504 Version.MIN().major * 1000 + Version.MIN().minor) {
2505 if (majorVersion == (maxMajor + 1))
2506 log.warning("big.major.version",
2507 currentClassFile,
2508 majorVersion,
2509 maxMajor);
2510 else
2511 throw badClassFile("wrong.version",
2512 Integer.toString(majorVersion),
2513 Integer.toString(minorVersion),
2514 Integer.toString(maxMajor),
2515 Integer.toString(maxMinor));
2516 }
2517
2518 indexPool();
2519 if (signatureBuffer.length < bp) {
2520 int ns = Integer.highestOneBit(bp) << 1;
2521 signatureBuffer = new byte[ns];
2522 }
2523 readClass(c);
2524 }
2525
2526 public void readClassFile(ClassSymbol c) {
2527 currentOwner = c;
2528 currentClassFile = c.classfile;
2529 warnedAttrs.clear();
2530 filling = true;
2531 target = null;
2532 repeatable = null;
2533 try {
2534 bp = 0;
2535 buf = readInputStream(buf, c.classfile.openInputStream());
2536 readClassBuffer(c);
2537 if (!missingTypeVariables.isEmpty() && !foundTypeVariables.isEmpty()) {
2538 List<Type> missing = missingTypeVariables;
2539 List<Type> found = foundTypeVariables;
2540 missingTypeVariables = List.nil();
2541 foundTypeVariables = List.nil();
2542 filling = false;
2543 ClassType ct = (ClassType)currentOwner.type;
2544 ct.supertype_field =
2545 types.subst(ct.supertype_field, missing, found);
2546 ct.interfaces_field =
2547 types.subst(ct.interfaces_field, missing, found);
2548 } else if (missingTypeVariables.isEmpty() !=
2549 foundTypeVariables.isEmpty()) {
2550 Name name = missingTypeVariables.head.tsym.name;
2551 throw badClassFile("undecl.type.var", name);
2552 }
2553
2554 if ((c.flags_field & Flags.ANNOTATION) != 0) {
2555 c.setAnnotationTypeMetadata(new AnnotationTypeMetadata(c, new CompleterDeproxy(c, target, repeatable)));
2556 } else {
2557 c.setAnnotationTypeMetadata(AnnotationTypeMetadata.notAnAnnotationType());
2558 }
2559
2560 if (c == currentModule.module_info) {
2561 if (interimUses.nonEmpty() || interimProvides.nonEmpty()) {
2562 Assert.check(currentModule.isCompleted());
2563 currentModule.usesProvidesCompleter =
2564 new UsesProvidesCompleter(currentModule, interimUses, interimProvides);
2565 } else {
2566 currentModule.uses = List.nil();
2567 currentModule.provides = List.nil();
2568 }
2569 }
2570 } catch (IOException ex) {
2571 throw badClassFile("unable.to.access.file", ex.getMessage());
2572 } catch (ArrayIndexOutOfBoundsException ex) {
2573 throw badClassFile("bad.class.file", c.flatname);
2574 } finally {
2575 interimUses = List.nil();
2576 interimProvides = List.nil();
2577 missingTypeVariables = List.nil();
2578 foundTypeVariables = List.nil();
2579 filling = false;
2580 }
2581 }
2582 // where
2583 private static byte[] readInputStream(byte[] buf, InputStream s) throws IOException {
2584 try {
2585 buf = ensureCapacity(buf, s.available());
2586 int r = s.read(buf);
2587 int bp = 0;
2588 while (r != -1) {
2589 bp += r;
2590 buf = ensureCapacity(buf, bp);
2591 r = s.read(buf, bp, buf.length - bp);
2592 }
2593 return buf;
2594 } finally {
2595 try {
2596 s.close();
2597 } catch (IOException e) {
2598 /* Ignore any errors, as this stream may have already
2599 * thrown a related exception which is the one that
2600 * should be reported.
2601 */
2602 }
2603 }
2604 }
2605 /*
2606 * ensureCapacity will increase the buffer as needed, taking note that
2607 * the new buffer will always be greater than the needed and never
2608 * exactly equal to the needed size or bp. If equal then the read (above)
2609 * will infinitely loop as buf.length - bp == 0.
2610 */
2611 private static byte[] ensureCapacity(byte[] buf, int needed) {
2612 if (buf.length <= needed) {
2613 byte[] old = buf;
2614 buf = new byte[Integer.highestOneBit(needed) << 1];
2615 System.arraycopy(old, 0, buf, 0, old.length);
2616 }
2617 return buf;
2618 }
2619
2620 /** We can only read a single class file at a time; this
2621 * flag keeps track of when we are currently reading a class
2622 * file.
2623 */
2624 public boolean filling = false;
2625
2626 /************************************************************************
2627 * Adjusting flags
2628 ***********************************************************************/
2629
2630 long adjustFieldFlags(long flags) {
2631 return flags;
2632 }
2633
2634 long adjustMethodFlags(long flags) {
2635 if ((flags & ACC_BRIDGE) != 0) {
2636 flags &= ~ACC_BRIDGE;
2637 flags |= BRIDGE;
2638 }
2639 if ((flags & ACC_VARARGS) != 0) {
2640 flags &= ~ACC_VARARGS;
2641 flags |= VARARGS;
2642 }
2643 return flags;
2644 }
2645
2646 long adjustClassFlags(long flags) {
2647 if ((flags & ACC_MODULE) != 0) {
2648 flags &= ~ACC_MODULE;
2649 flags |= MODULE;
2650 }
2651 return flags & ~ACC_SUPER; // SUPER and SYNCHRONIZED bits overloaded
2652 }
2653
2654 /**
2655 * A subclass of JavaFileObject for the sourcefile attribute found in a classfile.
2656 * The attribute is only the last component of the original filename, so is unlikely
2657 * to be valid as is, so operations other than those to access the name throw
2658 * UnsupportedOperationException
2659 */
2660 private static class SourceFileObject implements JavaFileObject {
2661
2662 /** The file's name.
2663 */
2664 private final Name name;
2665 private final Name flatname;
2666
2667 public SourceFileObject(Name name, Name flatname) {
2668 this.name = name;
2669 this.flatname = flatname;
2670 }
2671
2672 @Override @DefinedBy(Api.COMPILER)
2673 public URI toUri() {
2674 try {
2675 return new URI(null, name.toString(), null);
2676 } catch (URISyntaxException e) {
2677 throw new PathFileObject.CannotCreateUriError(name.toString(), e);
2678 }
2679 }
2680
2681 @Override @DefinedBy(Api.COMPILER)
2682 public String getName() {
2683 return name.toString();
2684 }
2685
2686 @Override @DefinedBy(Api.COMPILER)
2687 public JavaFileObject.Kind getKind() {
2688 return BaseFileManager.getKind(getName());
2689 }
2690
2691 @Override @DefinedBy(Api.COMPILER)
2692 public InputStream openInputStream() {
2693 throw new UnsupportedOperationException();
2694 }
2695
2696 @Override @DefinedBy(Api.COMPILER)
2697 public OutputStream openOutputStream() {
2698 throw new UnsupportedOperationException();
2699 }
2700
2701 @Override @DefinedBy(Api.COMPILER)
2702 public CharBuffer getCharContent(boolean ignoreEncodingErrors) {
2703 throw new UnsupportedOperationException();
2704 }
2705
2706 @Override @DefinedBy(Api.COMPILER)
2707 public Reader openReader(boolean ignoreEncodingErrors) {
2708 throw new UnsupportedOperationException();
2709 }
2710
2711 @Override @DefinedBy(Api.COMPILER)
2712 public Writer openWriter() {
2713 throw new UnsupportedOperationException();
2714 }
2715
2716 @Override @DefinedBy(Api.COMPILER)
2717 public long getLastModified() {
2718 throw new UnsupportedOperationException();
2719 }
2720
2721 @Override @DefinedBy(Api.COMPILER)
2722 public boolean delete() {
2723 throw new UnsupportedOperationException();
2724 }
2725
2726 @Override @DefinedBy(Api.COMPILER)
2727 public boolean isNameCompatible(String simpleName, JavaFileObject.Kind kind) {
2728 return true; // fail-safe mode
2729 }
2730
2731 @Override @DefinedBy(Api.COMPILER)
2732 public NestingKind getNestingKind() {
2733 return null;
2734 }
2735
2736 @Override @DefinedBy(Api.COMPILER)
2737 public Modifier getAccessLevel() {
2738 return null;
2739 }
2740
2741 /**
2742 * Check if two file objects are equal.
2743 * SourceFileObjects are just placeholder objects for the value of a
2744 * SourceFile attribute, and do not directly represent specific files.
2745 * Two SourceFileObjects are equal if their names are equal.
2746 */
2747 @Override
2748 public boolean equals(Object other) {
2749 if (this == other)
2750 return true;
2751
2752 if (!(other instanceof SourceFileObject))
2753 return false;
2754
2755 SourceFileObject o = (SourceFileObject) other;
2756 return name.equals(o.name);
2757 }
2758
2759 @Override
2760 public int hashCode() {
2761 return name.hashCode();
2762 }
2763 }
2764
2765 private class CompleterDeproxy implements AnnotationTypeCompleter {
2766 ClassSymbol proxyOn;
2767 CompoundAnnotationProxy target;
2768 CompoundAnnotationProxy repeatable;
2769
2770 public CompleterDeproxy(ClassSymbol c, CompoundAnnotationProxy target,
2771 CompoundAnnotationProxy repeatable)
2772 {
2773 this.proxyOn = c;
2774 this.target = target;
2775 this.repeatable = repeatable;
2776 }
2777
2778 @Override
2779 public void complete(ClassSymbol sym) {
2780 Assert.check(proxyOn == sym);
2781 Attribute.Compound theTarget = null, theRepeatable = null;
2782 AnnotationDeproxy deproxy;
2783
2784 try {
2785 if (target != null) {
2786 deproxy = new AnnotationDeproxy(proxyOn);
2787 theTarget = deproxy.deproxyCompound(target);
2788 }
2789
2790 if (repeatable != null) {
2791 deproxy = new AnnotationDeproxy(proxyOn);
2792 theRepeatable = deproxy.deproxyCompound(repeatable);
2793 }
2794 } catch (Exception e) {
2795 throw new CompletionFailure(sym, e.getMessage());
2796 }
2797
2798 sym.getAnnotationTypeMetadata().setTarget(theTarget);
2799 sym.getAnnotationTypeMetadata().setRepeatable(theRepeatable);
2800 }
2801 }
2802
2803 private static final class InterimUsesDirective {
2804 public final Name service;
2805
2806 public InterimUsesDirective(Name service) {
2807 this.service = service;
2808 }
2809
2810 }
2811
2812 private static final class InterimProvidesDirective {
2813 public final Name service;
2814 public final Name impl;
2815
2816 public InterimProvidesDirective(Name service, Name impl) {
2817 this.service = service;
2818 this.impl = impl;
2819 }
2820
2821 }
2822
2823 private final class UsesProvidesCompleter implements Completer {
2824 private final ModuleSymbol currentModule;
2825 private final List<InterimUsesDirective> interimUsesCopy;
2826 private final List<InterimProvidesDirective> interimProvidesCopy;
2827
2828 public UsesProvidesCompleter(ModuleSymbol currentModule, List<InterimUsesDirective> interimUsesCopy, List<InterimProvidesDirective> interimProvidesCopy) {
2829 this.currentModule = currentModule;
2830 this.interimUsesCopy = interimUsesCopy;
2831 this.interimProvidesCopy = interimProvidesCopy;
2832 }
2833
2834 @Override
2835 public void complete(Symbol sym) throws CompletionFailure {
2836 ListBuffer<Directive> directives = new ListBuffer<>();
2837 directives.addAll(currentModule.directives);
2838 ListBuffer<UsesDirective> uses = new ListBuffer<>();
2839 for (InterimUsesDirective interim : interimUsesCopy) {
2840 UsesDirective d = new UsesDirective(syms.enterClass(currentModule, interim.service));
2841 uses.add(d);
2842 directives.add(d);
2843 }
2844 currentModule.uses = uses.toList();
2845 ListBuffer<ProvidesDirective> provides = new ListBuffer<>();
2846 for (InterimProvidesDirective interim : interimProvidesCopy) {
2847 ProvidesDirective d = new ProvidesDirective(syms.enterClass(currentModule, interim.service),
2848 syms.enterClass(currentModule, interim.impl));
2849 provides.add(d);
2850 directives.add(d);
2851 }
2852 currentModule.provides = provides.toList();
2853 currentModule.directives = directives.toList();
2854 }
2855 }
2856 }