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
1464 if (proxy.type.tsym == syms.proprietaryType.tsym)
1465 sym.flags_field |= PROPRIETARY;
1466 else if (proxy.type.tsym == syms.profileType.tsym) {
1467 if (profile != Profile.DEFAULT) {
1468 for (Pair<Name,Attribute> v: proxy.values) {
1469 if (v.fst == names.value && v.snd instanceof Attribute.Constant) {
1470 Attribute.Constant c = (Attribute.Constant) v.snd;
1471 if (c.type == syms.intType && ((Integer) c.value) > profile.value) {
1472 sym.flags_field |= NOT_IN_PROFILE;
1473 }
1474 }
1475 }
1476 }
1477 } else {
1478 if (proxy.type.tsym == syms.annotationTargetType.tsym) {
1479 target = proxy;
1480 } else if (proxy.type.tsym == syms.repeatableType.tsym) {
1481 repeatable = proxy;
1482 }
1483
1484 proxies.append(proxy);
1485 }
1486 }
1487 annotate.normal(new AnnotationCompleter(sym, proxies.toList()));
1488 }
1489 }
1490
1491 /** Attach parameter annotations.
1492 */
1493 void attachParameterAnnotations(final Symbol method) {
1494 final MethodSymbol meth = (MethodSymbol)method;
1495 int numParameters = buf[bp++] & 0xFF;
1496 List<VarSymbol> parameters = meth.params();
1497 int pnum = 0;
1498 while (parameters.tail != null) {
1499 attachAnnotations(parameters.head);
1500 parameters = parameters.tail;
1501 pnum++;
1502 }
1503 if (pnum != numParameters) {
1504 throw badClassFile("bad.runtime.invisible.param.annotations", meth);
1505 }
1506 }
1507
1508 void attachTypeAnnotations(final Symbol sym) {
1509 int numAttributes = nextChar();
1510 if (numAttributes != 0) {
1511 ListBuffer<TypeAnnotationProxy> proxies = new ListBuffer<>();
1512 for (int i = 0; i < numAttributes; i++)
1513 proxies.append(readTypeAnnotation());
1514 annotate.normal(new TypeAnnotationCompleter(sym, proxies.toList()));
1515 }
1516 }
1517
1518 /** Attach the default value for an annotation element.
1519 */
1520 void attachAnnotationDefault(final Symbol sym) {
1521 final MethodSymbol meth = (MethodSymbol)sym; // only on methods
1522 final Attribute value = readAttributeValue();
1523
1524 // The default value is set later during annotation. It might
1525 // be the case that the Symbol sym is annotated _after_ the
1526 // repeating instances that depend on this default value,
1527 // because of this we set an interim value that tells us this
1528 // element (most likely) has a default.
1529 //
1530 // Set interim value for now, reset just before we do this
1531 // properly at annotate time.
1532 meth.defaultValue = value;
1533 annotate.normal(new AnnotationDefaultCompleter(meth, value));
1534 }
1535
1536 Type readTypeOrClassSymbol(int i) {
1537 // support preliminary jsr175-format class files
1538 if (buf[poolIdx[i]] == CONSTANT_Class)
1539 return readClassSymbol(i).type;
1540 return readType(i);
1541 }
1542 Type readEnumType(int i) {
1543 // support preliminary jsr175-format class files
1544 int index = poolIdx[i];
1545 int length = getChar(index + 1);
1546 if (buf[index + length + 2] != ';')
1547 return enterClass(readName(i)).type;
1548 return readType(i);
1549 }
1550
1551 CompoundAnnotationProxy readCompoundAnnotation() {
1552 Type t = readTypeOrClassSymbol(nextChar());
1553 int numFields = nextChar();
1554 ListBuffer<Pair<Name,Attribute>> pairs = new ListBuffer<>();
1555 for (int i=0; i<numFields; i++) {
1556 Name name = readName(nextChar());
1557 Attribute value = readAttributeValue();
1558 pairs.append(new Pair<>(name, value));
1559 }
1560 return new CompoundAnnotationProxy(t, pairs.toList());
1561 }
1562
1563 TypeAnnotationProxy readTypeAnnotation() {
1564 TypeAnnotationPosition position = readPosition();
1565 CompoundAnnotationProxy proxy = readCompoundAnnotation();
1566
1567 return new TypeAnnotationProxy(proxy, position);
1568 }
1569
1570 TypeAnnotationPosition readPosition() {
1571 int tag = nextByte(); // TargetType tag is a byte
1572
1573 if (!TargetType.isValidTargetTypeValue(tag))
1574 throw badClassFile("bad.type.annotation.value", String.format("0x%02X", tag));
1575
1576 TargetType type = TargetType.fromTargetTypeValue(tag);
1577
1578 switch (type) {
1579 // instanceof
1580 case INSTANCEOF: {
1581 final int offset = nextChar();
1582 final TypeAnnotationPosition position =
1583 TypeAnnotationPosition.instanceOf(readTypePath());
1584 position.offset = offset;
1585 return position;
1586 }
1587 // new expression
1588 case NEW: {
1589 final int offset = nextChar();
1590 final TypeAnnotationPosition position =
1591 TypeAnnotationPosition.newObj(readTypePath());
1592 position.offset = offset;
1593 return position;
1594 }
1595 // constructor/method reference receiver
1596 case CONSTRUCTOR_REFERENCE: {
1597 final int offset = nextChar();
1598 final TypeAnnotationPosition position =
1599 TypeAnnotationPosition.constructorRef(readTypePath());
1600 position.offset = offset;
1601 return position;
1602 }
1603 case METHOD_REFERENCE: {
1604 final int offset = nextChar();
1605 final TypeAnnotationPosition position =
1606 TypeAnnotationPosition.methodRef(readTypePath());
1607 position.offset = offset;
1608 return position;
1609 }
1610 // local variable
1611 case LOCAL_VARIABLE: {
1612 final int table_length = nextChar();
1613 final int[] newLvarOffset = new int[table_length];
1614 final int[] newLvarLength = new int[table_length];
1615 final int[] newLvarIndex = new int[table_length];
1616
1617 for (int i = 0; i < table_length; ++i) {
1618 newLvarOffset[i] = nextChar();
1619 newLvarLength[i] = nextChar();
1620 newLvarIndex[i] = nextChar();
1621 }
1622
1623 final TypeAnnotationPosition position =
1624 TypeAnnotationPosition.localVariable(readTypePath());
1625 position.lvarOffset = newLvarOffset;
1626 position.lvarLength = newLvarLength;
1627 position.lvarIndex = newLvarIndex;
1628 return position;
1629 }
1630 // resource variable
1631 case RESOURCE_VARIABLE: {
1632 final int table_length = nextChar();
1633 final int[] newLvarOffset = new int[table_length];
1634 final int[] newLvarLength = new int[table_length];
1635 final int[] newLvarIndex = new int[table_length];
1636
1637 for (int i = 0; i < table_length; ++i) {
1638 newLvarOffset[i] = nextChar();
1639 newLvarLength[i] = nextChar();
1640 newLvarIndex[i] = nextChar();
1641 }
1642
1643 final TypeAnnotationPosition position =
1644 TypeAnnotationPosition.resourceVariable(readTypePath());
1645 position.lvarOffset = newLvarOffset;
1646 position.lvarLength = newLvarLength;
1647 position.lvarIndex = newLvarIndex;
1648 return position;
1649 }
1650 // exception parameter
1651 case EXCEPTION_PARAMETER: {
1652 final int exception_index = nextChar();
1653 final TypeAnnotationPosition position =
1654 TypeAnnotationPosition.exceptionParameter(readTypePath());
1655 position.setExceptionIndex(exception_index);
1656 return position;
1657 }
1658 // method receiver
1659 case METHOD_RECEIVER:
1660 return TypeAnnotationPosition.methodReceiver(readTypePath());
1661 // type parameter
1662 case CLASS_TYPE_PARAMETER: {
1663 final int parameter_index = nextByte();
1664 return TypeAnnotationPosition
1665 .typeParameter(readTypePath(), parameter_index);
1666 }
1667 case METHOD_TYPE_PARAMETER: {
1668 final int parameter_index = nextByte();
1669 return TypeAnnotationPosition
1670 .methodTypeParameter(readTypePath(), parameter_index);
1671 }
1672 // type parameter bound
1673 case CLASS_TYPE_PARAMETER_BOUND: {
1674 final int parameter_index = nextByte();
1675 final int bound_index = nextByte();
1676 return TypeAnnotationPosition
1677 .typeParameterBound(readTypePath(), parameter_index,
1678 bound_index);
1679 }
1680 case METHOD_TYPE_PARAMETER_BOUND: {
1681 final int parameter_index = nextByte();
1682 final int bound_index = nextByte();
1683 return TypeAnnotationPosition
1684 .methodTypeParameterBound(readTypePath(), parameter_index,
1685 bound_index);
1686 }
1687 // class extends or implements clause
1688 case CLASS_EXTENDS: {
1689 final int type_index = nextChar();
1690 return TypeAnnotationPosition.classExtends(readTypePath(),
1691 type_index);
1692 }
1693 // throws
1694 case THROWS: {
1695 final int type_index = nextChar();
1696 return TypeAnnotationPosition.methodThrows(readTypePath(),
1697 type_index);
1698 }
1699 // method parameter
1700 case METHOD_FORMAL_PARAMETER: {
1701 final int parameter_index = nextByte();
1702 return TypeAnnotationPosition.methodParameter(readTypePath(),
1703 parameter_index);
1704 }
1705 // type cast
1706 case CAST: {
1707 final int offset = nextChar();
1708 final int type_index = nextByte();
1709 final TypeAnnotationPosition position =
1710 TypeAnnotationPosition.typeCast(readTypePath(), type_index);
1711 position.offset = offset;
1712 return position;
1713 }
1714 // method/constructor/reference type argument
1715 case CONSTRUCTOR_INVOCATION_TYPE_ARGUMENT: {
1716 final int offset = nextChar();
1717 final int type_index = nextByte();
1718 final TypeAnnotationPosition position = TypeAnnotationPosition
1719 .constructorInvocationTypeArg(readTypePath(), type_index);
1720 position.offset = offset;
1721 return position;
1722 }
1723 case METHOD_INVOCATION_TYPE_ARGUMENT: {
1724 final int offset = nextChar();
1725 final int type_index = nextByte();
1726 final TypeAnnotationPosition position = TypeAnnotationPosition
1727 .methodInvocationTypeArg(readTypePath(), type_index);
1728 position.offset = offset;
1729 return position;
1730 }
1731 case CONSTRUCTOR_REFERENCE_TYPE_ARGUMENT: {
1732 final int offset = nextChar();
1733 final int type_index = nextByte();
1734 final TypeAnnotationPosition position = TypeAnnotationPosition
1735 .constructorRefTypeArg(readTypePath(), type_index);
1736 position.offset = offset;
1737 return position;
1738 }
1739 case METHOD_REFERENCE_TYPE_ARGUMENT: {
1740 final int offset = nextChar();
1741 final int type_index = nextByte();
1742 final TypeAnnotationPosition position = TypeAnnotationPosition
1743 .methodRefTypeArg(readTypePath(), type_index);
1744 position.offset = offset;
1745 return position;
1746 }
1747 // We don't need to worry about these
1748 case METHOD_RETURN:
1749 return TypeAnnotationPosition.methodReturn(readTypePath());
1750 case FIELD:
1751 return TypeAnnotationPosition.field(readTypePath());
1752 case UNKNOWN:
1753 throw new AssertionError("jvm.ClassReader: UNKNOWN target type should never occur!");
1754 default:
1755 throw new AssertionError("jvm.ClassReader: Unknown target type for position: " + type);
1756 }
1757 }
1758
1759 List<TypeAnnotationPosition.TypePathEntry> readTypePath() {
1760 int len = nextByte();
1761 ListBuffer<Integer> loc = new ListBuffer<>();
1762 for (int i = 0; i < len * TypeAnnotationPosition.TypePathEntry.bytesPerEntry; ++i)
1763 loc = loc.append(nextByte());
1764
1765 return TypeAnnotationPosition.getTypePathFromBinary(loc.toList());
1766
1767 }
1768
1769 Attribute readAttributeValue() {
1770 char c = (char) buf[bp++];
1771 switch (c) {
1772 case 'B':
1773 return new Attribute.Constant(syms.byteType, readPool(nextChar()));
1774 case 'C':
1775 return new Attribute.Constant(syms.charType, readPool(nextChar()));
1776 case 'D':
1777 return new Attribute.Constant(syms.doubleType, readPool(nextChar()));
1778 case 'F':
1779 return new Attribute.Constant(syms.floatType, readPool(nextChar()));
1780 case 'I':
1781 return new Attribute.Constant(syms.intType, readPool(nextChar()));
1782 case 'J':
1783 return new Attribute.Constant(syms.longType, readPool(nextChar()));
1784 case 'S':
1785 return new Attribute.Constant(syms.shortType, readPool(nextChar()));
1786 case 'Z':
1787 return new Attribute.Constant(syms.booleanType, readPool(nextChar()));
1788 case 's':
1789 return new Attribute.Constant(syms.stringType, readPool(nextChar()).toString());
1790 case 'e':
1791 return new EnumAttributeProxy(readEnumType(nextChar()), readName(nextChar()));
1792 case 'c':
1793 return new Attribute.Class(types, readTypeOrClassSymbol(nextChar()));
1794 case '[': {
1795 int n = nextChar();
1796 ListBuffer<Attribute> l = new ListBuffer<>();
1797 for (int i=0; i<n; i++)
1798 l.append(readAttributeValue());
1799 return new ArrayAttributeProxy(l.toList());
1800 }
1801 case '@':
1802 return readCompoundAnnotation();
1803 default:
1804 throw new AssertionError("unknown annotation tag '" + c + "'");
1805 }
1806 }
1807
1808 interface ProxyVisitor extends Attribute.Visitor {
1809 void visitEnumAttributeProxy(EnumAttributeProxy proxy);
1810 void visitArrayAttributeProxy(ArrayAttributeProxy proxy);
1811 void visitCompoundAnnotationProxy(CompoundAnnotationProxy proxy);
1812 }
1813
1814 static class EnumAttributeProxy extends Attribute {
1815 Type enumType;
1816 Name enumerator;
1817 public EnumAttributeProxy(Type enumType, Name enumerator) {
1818 super(null);
1819 this.enumType = enumType;
1820 this.enumerator = enumerator;
1821 }
1822 public void accept(Visitor v) { ((ProxyVisitor)v).visitEnumAttributeProxy(this); }
1823 @Override @DefinedBy(Api.LANGUAGE_MODEL)
1824 public String toString() {
1825 return "/*proxy enum*/" + enumType + "." + enumerator;
1826 }
1827 }
1828
1829 static class ArrayAttributeProxy extends Attribute {
1830 List<Attribute> values;
1831 ArrayAttributeProxy(List<Attribute> values) {
1832 super(null);
1833 this.values = values;
1834 }
1835 public void accept(Visitor v) { ((ProxyVisitor)v).visitArrayAttributeProxy(this); }
1836 @Override @DefinedBy(Api.LANGUAGE_MODEL)
1837 public String toString() {
1838 return "{" + values + "}";
1839 }
1840 }
1841
1842 /** A temporary proxy representing a compound attribute.
1843 */
1844 static class CompoundAnnotationProxy extends Attribute {
1845 final List<Pair<Name,Attribute>> values;
1846 public CompoundAnnotationProxy(Type type,
1847 List<Pair<Name,Attribute>> values) {
1848 super(type);
1849 this.values = values;
1850 }
1851 public void accept(Visitor v) { ((ProxyVisitor)v).visitCompoundAnnotationProxy(this); }
1852 @Override @DefinedBy(Api.LANGUAGE_MODEL)
1853 public String toString() {
1854 StringBuilder buf = new StringBuilder();
1855 buf.append("@");
1856 buf.append(type.tsym.getQualifiedName());
1857 buf.append("/*proxy*/{");
1858 boolean first = true;
1859 for (List<Pair<Name,Attribute>> v = values;
1860 v.nonEmpty(); v = v.tail) {
1861 Pair<Name,Attribute> value = v.head;
1862 if (!first) buf.append(",");
1863 first = false;
1864 buf.append(value.fst);
1865 buf.append("=");
1866 buf.append(value.snd);
1867 }
1868 buf.append("}");
1869 return buf.toString();
1870 }
1871 }
1872
1873 /** A temporary proxy representing a type annotation.
1874 */
1875 static class TypeAnnotationProxy {
1876 final CompoundAnnotationProxy compound;
1877 final TypeAnnotationPosition position;
1878 public TypeAnnotationProxy(CompoundAnnotationProxy compound,
1879 TypeAnnotationPosition position) {
1880 this.compound = compound;
1881 this.position = position;
1882 }
1883 }
1884
1885 class AnnotationDeproxy implements ProxyVisitor {
1886 private ClassSymbol requestingOwner;
1887
1888 AnnotationDeproxy(ClassSymbol owner) {
1889 this.requestingOwner = owner;
1890 }
1891
1892 List<Attribute.Compound> deproxyCompoundList(List<CompoundAnnotationProxy> pl) {
1893 // also must fill in types!!!!
1894 ListBuffer<Attribute.Compound> buf = new ListBuffer<>();
1895 for (List<CompoundAnnotationProxy> l = pl; l.nonEmpty(); l=l.tail) {
1896 buf.append(deproxyCompound(l.head));
1897 }
1898 return buf.toList();
1899 }
1900
1901 Attribute.Compound deproxyCompound(CompoundAnnotationProxy a) {
1902 ListBuffer<Pair<Symbol.MethodSymbol,Attribute>> buf = new ListBuffer<>();
1903 for (List<Pair<Name,Attribute>> l = a.values;
1904 l.nonEmpty();
1905 l = l.tail) {
1906 MethodSymbol meth = findAccessMethod(a.type, l.head.fst);
1907 buf.append(new Pair<>(meth, deproxy(meth.type.getReturnType(), l.head.snd)));
1908 }
1909 return new Attribute.Compound(a.type, buf.toList());
1910 }
1911
1912 MethodSymbol findAccessMethod(Type container, Name name) {
1913 CompletionFailure failure = null;
1914 try {
1915 for (Symbol sym : container.tsym.members().getSymbolsByName(name)) {
1916 if (sym.kind == MTH && sym.type.getParameterTypes().length() == 0)
1917 return (MethodSymbol) sym;
1918 }
1919 } catch (CompletionFailure ex) {
1920 failure = ex;
1921 }
1922 // The method wasn't found: emit a warning and recover
1923 JavaFileObject prevSource = log.useSource(requestingOwner.classfile);
1924 try {
1925 if (lintClassfile) {
1926 if (failure == null) {
1927 log.warning("annotation.method.not.found",
1928 container,
1929 name);
1930 } else {
1931 log.warning("annotation.method.not.found.reason",
1932 container,
1933 name,
1934 failure.getDetailValue());//diagnostic, if present
1935 }
1936 }
1937 } finally {
1938 log.useSource(prevSource);
1939 }
1940 // Construct a new method type and symbol. Use bottom
1941 // type (typeof null) as return type because this type is
1942 // a subtype of all reference types and can be converted
1943 // to primitive types by unboxing.
1944 MethodType mt = new MethodType(List.<Type>nil(),
1945 syms.botType,
1946 List.<Type>nil(),
1947 syms.methodClass);
1948 return new MethodSymbol(PUBLIC | ABSTRACT, name, mt, container.tsym);
1949 }
1950
1951 Attribute result;
1952 Type type;
1953 Attribute deproxy(Type t, Attribute a) {
1954 Type oldType = type;
1955 try {
1956 type = t;
1957 a.accept(this);
1958 return result;
1959 } finally {
1960 type = oldType;
1961 }
1962 }
1963
1964 // implement Attribute.Visitor below
1965
1966 public void visitConstant(Attribute.Constant value) {
1967 // assert value.type == type;
1968 result = value;
1969 }
1970
1971 public void visitClass(Attribute.Class clazz) {
1972 result = clazz;
1973 }
1974
1975 public void visitEnum(Attribute.Enum e) {
1976 throw new AssertionError(); // shouldn't happen
1977 }
1978
1979 public void visitCompound(Attribute.Compound compound) {
1980 throw new AssertionError(); // shouldn't happen
1981 }
1982
1983 public void visitArray(Attribute.Array array) {
1984 throw new AssertionError(); // shouldn't happen
1985 }
1986
1987 public void visitError(Attribute.Error e) {
1988 throw new AssertionError(); // shouldn't happen
1989 }
1990
1991 public void visitEnumAttributeProxy(EnumAttributeProxy proxy) {
1992 // type.tsym.flatName() should == proxy.enumFlatName
1993 TypeSymbol enumTypeSym = proxy.enumType.tsym;
1994 VarSymbol enumerator = null;
1995 CompletionFailure failure = null;
1996 try {
1997 for (Symbol sym : enumTypeSym.members().getSymbolsByName(proxy.enumerator)) {
1998 if (sym.kind == VAR) {
1999 enumerator = (VarSymbol)sym;
2000 break;
2001 }
2002 }
2003 }
2004 catch (CompletionFailure ex) {
2005 failure = ex;
2006 }
2007 if (enumerator == null) {
2008 if (failure != null) {
2009 log.warning("unknown.enum.constant.reason",
2010 currentClassFile, enumTypeSym, proxy.enumerator,
2011 failure.getDiagnostic());
2012 } else {
2013 log.warning("unknown.enum.constant",
2014 currentClassFile, enumTypeSym, proxy.enumerator);
2015 }
2016 result = new Attribute.Enum(enumTypeSym.type,
2017 new VarSymbol(0, proxy.enumerator, syms.botType, enumTypeSym));
2018 } else {
2019 result = new Attribute.Enum(enumTypeSym.type, enumerator);
2020 }
2021 }
2022
2023 public void visitArrayAttributeProxy(ArrayAttributeProxy proxy) {
2024 int length = proxy.values.length();
2025 Attribute[] ats = new Attribute[length];
2026 Type elemtype = types.elemtype(type);
2027 int i = 0;
2028 for (List<Attribute> p = proxy.values; p.nonEmpty(); p = p.tail) {
2029 ats[i++] = deproxy(elemtype, p.head);
2030 }
2031 result = new Attribute.Array(type, ats);
2032 }
2033
2034 public void visitCompoundAnnotationProxy(CompoundAnnotationProxy proxy) {
2035 result = deproxyCompound(proxy);
2036 }
2037 }
2038
2039 class AnnotationDefaultCompleter extends AnnotationDeproxy implements Runnable {
2040 final MethodSymbol sym;
2041 final Attribute value;
2042 final JavaFileObject classFile = currentClassFile;
2043
2044 AnnotationDefaultCompleter(MethodSymbol sym, Attribute value) {
2045 super(currentOwner.kind == MTH
2046 ? currentOwner.enclClass() : (ClassSymbol)currentOwner);
2047 this.sym = sym;
2048 this.value = value;
2049 }
2050
2051 @Override
2052 public void run() {
2053 JavaFileObject previousClassFile = currentClassFile;
2054 try {
2055 // Reset the interim value set earlier in
2056 // attachAnnotationDefault().
2057 sym.defaultValue = null;
2058 currentClassFile = classFile;
2059 sym.defaultValue = deproxy(sym.type.getReturnType(), value);
2060 } finally {
2061 currentClassFile = previousClassFile;
2062 }
2063 }
2064
2065 @Override
2066 public String toString() {
2067 return " ClassReader store default for " + sym.owner + "." + sym + " is " + value;
2068 }
2069 }
2070
2071 class AnnotationCompleter extends AnnotationDeproxy implements Runnable {
2072 final Symbol sym;
2073 final List<CompoundAnnotationProxy> l;
2074 final JavaFileObject classFile;
2075
2076 AnnotationCompleter(Symbol sym, List<CompoundAnnotationProxy> l) {
2077 super(currentOwner.kind == MTH
2078 ? currentOwner.enclClass() : (ClassSymbol)currentOwner);
2079 this.sym = sym;
2080 this.l = l;
2081 this.classFile = currentClassFile;
2082 }
2083
2084 @Override
2085 public void run() {
2086 JavaFileObject previousClassFile = currentClassFile;
2087 try {
2088 currentClassFile = classFile;
2089 List<Attribute.Compound> newList = deproxyCompoundList(l);
2090 if (sym.annotationsPendingCompletion()) {
2091 sym.setDeclarationAttributes(newList);
2092 } else {
2093 sym.appendAttributes(newList);
2094 }
2095 } finally {
2096 currentClassFile = previousClassFile;
2097 }
2098 }
2099
2100 @Override
2101 public String toString() {
2102 return " ClassReader annotate " + sym.owner + "." + sym + " with " + l;
2103 }
2104 }
2105
2106 class TypeAnnotationCompleter extends AnnotationCompleter {
2107
2108 List<TypeAnnotationProxy> proxies;
2109
2110 TypeAnnotationCompleter(Symbol sym,
2111 List<TypeAnnotationProxy> proxies) {
2112 super(sym, List.<CompoundAnnotationProxy>nil());
2113 this.proxies = proxies;
2114 }
2115
2116 List<Attribute.TypeCompound> deproxyTypeCompoundList(List<TypeAnnotationProxy> proxies) {
2117 ListBuffer<Attribute.TypeCompound> buf = new ListBuffer<>();
2118 for (TypeAnnotationProxy proxy: proxies) {
2119 Attribute.Compound compound = deproxyCompound(proxy.compound);
2120 Attribute.TypeCompound typeCompound = new Attribute.TypeCompound(compound, proxy.position);
2121 buf.add(typeCompound);
2122 }
2123 return buf.toList();
2124 }
2125
2126 @Override
2127 public void run() {
2128 JavaFileObject previousClassFile = currentClassFile;
2129 try {
2130 currentClassFile = classFile;
2131 List<Attribute.TypeCompound> newList = deproxyTypeCompoundList(proxies);
2132 sym.setTypeAttributes(newList.prependList(sym.getRawTypeAttributes()));
2133 } finally {
2134 currentClassFile = previousClassFile;
2135 }
2136 }
2137 }
2138
2139
2140 /************************************************************************
2141 * Reading Symbols
2142 ***********************************************************************/
2143
2144 /** Read a field.
2145 */
2146 VarSymbol readField() {
2147 long flags = adjustFieldFlags(nextChar());
2148 Name name = readName(nextChar());
2149 Type type = readType(nextChar());
2150 VarSymbol v = new VarSymbol(flags, name, type, currentOwner);
2151 readMemberAttrs(v);
2152 return v;
2153 }
2154
2155 /** Read a method.
2156 */
2157 MethodSymbol readMethod() {
2158 long flags = adjustMethodFlags(nextChar());
2159 Name name = readName(nextChar());
2160 Type type = readType(nextChar());
2161 if (currentOwner.isInterface() &&
2162 (flags & ABSTRACT) == 0 && !name.equals(names.clinit)) {
2163 if (majorVersion > Version.V52.major ||
2164 (majorVersion == Version.V52.major && minorVersion >= Version.V52.minor)) {
2165 if ((flags & STATIC) == 0) {
2166 currentOwner.flags_field |= DEFAULT;
2167 flags |= DEFAULT | ABSTRACT;
2168 }
2169 } else {
2170 //protect against ill-formed classfiles
2171 throw badClassFile((flags & STATIC) == 0 ? "invalid.default.interface" : "invalid.static.interface",
2172 Integer.toString(majorVersion),
2173 Integer.toString(minorVersion));
2174 }
2175 }
2176 if (name == names.init && currentOwner.hasOuterInstance()) {
2177 // Sometimes anonymous classes don't have an outer
2178 // instance, however, there is no reliable way to tell so
2179 // we never strip this$n
2180 if (!currentOwner.name.isEmpty())
2181 type = new MethodType(adjustMethodParams(flags, type.getParameterTypes()),
2182 type.getReturnType(),
2183 type.getThrownTypes(),
2184 syms.methodClass);
2185 }
2186 MethodSymbol m = new MethodSymbol(flags, name, type, currentOwner);
2187 if (types.isSignaturePolymorphic(m)) {
2188 m.flags_field |= SIGNATURE_POLYMORPHIC;
2189 }
2190 if (saveParameterNames)
2191 initParameterNames(m);
2192 Symbol prevOwner = currentOwner;
2193 currentOwner = m;
2194 try {
2195 readMemberAttrs(m);
2196 } finally {
2197 currentOwner = prevOwner;
2198 }
2199 if (saveParameterNames)
2200 setParameterNames(m, type);
2201
2202 if ((flags & VARARGS) != 0) {
2203 final Type last = type.getParameterTypes().last();
2204 if (last == null || !last.hasTag(ARRAY)) {
2205 m.flags_field &= ~VARARGS;
2206 throw badClassFile("malformed.vararg.method", m);
2207 }
2208 }
2209
2210 return m;
2211 }
2212
2213 private List<Type> adjustMethodParams(long flags, List<Type> args) {
2214 boolean isVarargs = (flags & VARARGS) != 0;
2215 if (isVarargs) {
2216 Type varargsElem = args.last();
2217 ListBuffer<Type> adjustedArgs = new ListBuffer<>();
2218 for (Type t : args) {
2219 adjustedArgs.append(t != varargsElem ?
2220 t :
2221 ((ArrayType)t).makeVarargs());
2222 }
2223 args = adjustedArgs.toList();
2224 }
2225 return args.tail;
2226 }
2227
2228 /**
2229 * Init the parameter names array.
2230 * Parameter names are currently inferred from the names in the
2231 * LocalVariableTable attributes of a Code attribute.
2232 * (Note: this means parameter names are currently not available for
2233 * methods without a Code attribute.)
2234 * This method initializes an array in which to store the name indexes
2235 * of parameter names found in LocalVariableTable attributes. It is
2236 * slightly supersized to allow for additional slots with a start_pc of 0.
2237 */
2238 void initParameterNames(MethodSymbol sym) {
2239 // make allowance for synthetic parameters.
2240 final int excessSlots = 4;
2241 int expectedParameterSlots =
2242 Code.width(sym.type.getParameterTypes()) + excessSlots;
2243 if (parameterNameIndices == null
2244 || parameterNameIndices.length < expectedParameterSlots) {
2245 parameterNameIndices = new int[expectedParameterSlots];
2246 } else
2247 Arrays.fill(parameterNameIndices, 0);
2248 haveParameterNameIndices = false;
2249 sawMethodParameters = false;
2250 }
2251
2252 /**
2253 * Set the parameter names for a symbol from the name index in the
2254 * parameterNameIndicies array. The type of the symbol may have changed
2255 * while reading the method attributes (see the Signature attribute).
2256 * This may be because of generic information or because anonymous
2257 * synthetic parameters were added. The original type (as read from
2258 * the method descriptor) is used to help guess the existence of
2259 * anonymous synthetic parameters.
2260 * On completion, sym.savedParameter names will either be null (if
2261 * no parameter names were found in the class file) or will be set to a
2262 * list of names, one per entry in sym.type.getParameterTypes, with
2263 * any missing names represented by the empty name.
2264 */
2265 void setParameterNames(MethodSymbol sym, Type jvmType) {
2266 // if no names were found in the class file, there's nothing more to do
2267 if (!haveParameterNameIndices)
2268 return;
2269 // If we get parameter names from MethodParameters, then we
2270 // don't need to skip.
2271 int firstParam = 0;
2272 if (!sawMethodParameters) {
2273 firstParam = ((sym.flags() & STATIC) == 0) ? 1 : 0;
2274 // the code in readMethod may have skipped the first
2275 // parameter when setting up the MethodType. If so, we
2276 // make a corresponding allowance here for the position of
2277 // the first parameter. Note that this assumes the
2278 // skipped parameter has a width of 1 -- i.e. it is not
2279 // a double width type (long or double.)
2280 if (sym.name == names.init && currentOwner.hasOuterInstance()) {
2281 // Sometimes anonymous classes don't have an outer
2282 // instance, however, there is no reliable way to tell so
2283 // we never strip this$n
2284 if (!currentOwner.name.isEmpty())
2285 firstParam += 1;
2286 }
2287
2288 if (sym.type != jvmType) {
2289 // reading the method attributes has caused the
2290 // symbol's type to be changed. (i.e. the Signature
2291 // attribute.) This may happen if there are hidden
2292 // (synthetic) parameters in the descriptor, but not
2293 // in the Signature. The position of these hidden
2294 // parameters is unspecified; for now, assume they are
2295 // at the beginning, and so skip over them. The
2296 // primary case for this is two hidden parameters
2297 // passed into Enum constructors.
2298 int skip = Code.width(jvmType.getParameterTypes())
2299 - Code.width(sym.type.getParameterTypes());
2300 firstParam += skip;
2301 }
2302 }
2303 List<Name> paramNames = List.nil();
2304 int index = firstParam;
2305 for (Type t: sym.type.getParameterTypes()) {
2306 int nameIdx = (index < parameterNameIndices.length
2307 ? parameterNameIndices[index] : 0);
2308 Name name = nameIdx == 0 ? names.empty : readName(nameIdx);
2309 paramNames = paramNames.prepend(name);
2310 index += Code.width(t);
2311 }
2312 sym.savedParameterNames = paramNames.reverse();
2313 }
2314
2315 /**
2316 * skip n bytes
2317 */
2318 void skipBytes(int n) {
2319 bp = bp + n;
2320 }
2321
2322 /** Skip a field or method
2323 */
2324 void skipMember() {
2325 bp = bp + 6;
2326 char ac = nextChar();
2327 for (int i = 0; i < ac; i++) {
2328 bp = bp + 2;
2329 int attrLen = nextInt();
2330 bp = bp + attrLen;
2331 }
2332 }
2333
2334 void skipInnerClasses() {
2335 int n = nextChar();
2336 for (int i = 0; i < n; i++) {
2337 nextChar();
2338 nextChar();
2339 nextChar();
2340 nextChar();
2341 }
2342 }
2343
2344 /** Enter type variables of this classtype and all enclosing ones in
2345 * `typevars'.
2346 */
2347 protected void enterTypevars(Type t) {
2348 if (t.getEnclosingType() != null && t.getEnclosingType().hasTag(CLASS))
2349 enterTypevars(t.getEnclosingType());
2350 for (List<Type> xs = t.getTypeArguments(); xs.nonEmpty(); xs = xs.tail)
2351 typevars.enter(xs.head.tsym);
2352 }
2353
2354 protected void enterTypevars(Symbol sym) {
2355 if (sym.owner.kind == MTH) {
2356 enterTypevars(sym.owner);
2357 enterTypevars(sym.owner.owner);
2358 }
2359 enterTypevars(sym.type);
2360 }
2361
2362 protected ClassSymbol enterClass(Name name) {
2363 return syms.enterClass(currentModule, name);
2364 }
2365
2366 protected ClassSymbol enterClass(Name name, TypeSymbol owner) {
2367 return syms.enterClass(currentModule, name, owner);
2368 }
2369
2370 /** Read contents of a given class symbol `c'. Both external and internal
2371 * versions of an inner class are read.
2372 */
2373 void readClass(ClassSymbol c) {
2374 ClassType ct = (ClassType)c.type;
2375
2376 // allocate scope for members
2377 c.members_field = WriteableScope.create(c);
2378
2379 // prepare type variable table
2380 typevars = typevars.dup(currentOwner);
2381 if (ct.getEnclosingType().hasTag(CLASS))
2382 enterTypevars(ct.getEnclosingType());
2383
2384 // read flags, or skip if this is an inner class
2385 long f = nextChar();
2386 long flags = adjustClassFlags(f);
2387 if ((flags & MODULE) == 0) {
2388 if (c.owner.kind == PCK) c.flags_field = flags;
2389 // read own class name and check that it matches
2390 currentModule = c.packge().modle;
2391 ClassSymbol self = readClassSymbol(nextChar());
2392 if (c != self) {
2393 throw badClassFile("class.file.wrong.class",
2394 self.flatname);
2395 }
2396 } else {
2397 c.flags_field = flags;
2398 Name modInfoName = readModuleInfoName(nextChar());
2399 currentModule = (ModuleSymbol) c.owner;
2400 if (currentModule.name.append('.', names.module_info) != modInfoName) {
2401 //strip trailing .module-info, if exists:
2402 int modInfoStart = modInfoName.length() - names.module_info.length();
2403 modInfoName = modInfoName.subName(modInfoStart, modInfoName.length()) == names.module_info &&
2404 modInfoName.charAt(modInfoStart - 1) == '.' ?
2405 modInfoName.subName(0, modInfoStart - 1) : modInfoName;
2406 throw badClassFile("module.name.mismatch", modInfoName, currentModule.name);
2407 }
2408 }
2409
2410 // class attributes must be read before class
2411 // skip ahead to read class attributes
2412 int startbp = bp;
2413 nextChar();
2414 char interfaceCount = nextChar();
2415 bp += interfaceCount * 2;
2416 char fieldCount = nextChar();
2417 for (int i = 0; i < fieldCount; i++) skipMember();
2418 char methodCount = nextChar();
2419 for (int i = 0; i < methodCount; i++) skipMember();
2420 readClassAttrs(c);
2421
2422 if (readAllOfClassFile) {
2423 for (int i = 1; i < poolObj.length; i++) readPool(i);
2424 c.pool = new Pool(poolObj.length, poolObj, types);
2425 }
2426
2427 // reset and read rest of classinfo
2428 bp = startbp;
2429 int n = nextChar();
2430 if ((flags & MODULE) != 0 && n > 0) {
2431 throw badClassFile("module.info.invalid.super.class");
2432 }
2433 if (ct.supertype_field == null)
2434 ct.supertype_field = (n == 0)
2435 ? Type.noType
2436 : readClassSymbol(n).erasure(types);
2437 n = nextChar();
2438 List<Type> is = List.nil();
2439 for (int i = 0; i < n; i++) {
2440 Type _inter = readClassSymbol(nextChar()).erasure(types);
2441 is = is.prepend(_inter);
2442 }
2443 if (ct.interfaces_field == null)
2444 ct.interfaces_field = is.reverse();
2445
2446 Assert.check(fieldCount == nextChar());
2447 for (int i = 0; i < fieldCount; i++) enterMember(c, readField());
2448 Assert.check(methodCount == nextChar());
2449 for (int i = 0; i < methodCount; i++) enterMember(c, readMethod());
2450
2451 typevars = typevars.leave();
2452 }
2453
2454 /** Read inner class info. For each inner/outer pair allocate a
2455 * member class.
2456 */
2457 void readInnerClasses(ClassSymbol c) {
2458 int n = nextChar();
2459 for (int i = 0; i < n; i++) {
2460 nextChar(); // skip inner class symbol
2461 ClassSymbol outer = readClassSymbol(nextChar());
2462 Name name = readName(nextChar());
2463 if (name == null) name = names.empty;
2464 long flags = adjustClassFlags(nextChar());
2465 if (outer != null) { // we have a member class
2466 if (name == names.empty)
2467 name = names.one;
2468 ClassSymbol member = enterClass(name, outer);
2469 if ((flags & STATIC) == 0) {
2470 ((ClassType)member.type).setEnclosingType(outer.type);
2471 if (member.erasure_field != null)
2472 ((ClassType)member.erasure_field).setEnclosingType(types.erasure(outer.type));
2473 }
2474 if (c == outer) {
2475 member.flags_field = flags;
2476 enterMember(c, member);
2477 }
2478 }
2479 }
2480 }
2481
2482 /** Read a class definition from the bytes in buf.
2483 */
2484 private void readClassBuffer(ClassSymbol c) throws IOException {
2485 int magic = nextInt();
2486 if (magic != JAVA_MAGIC)
2487 throw badClassFile("illegal.start.of.class.file");
2488
2489 minorVersion = nextChar();
2490 majorVersion = nextChar();
2491 int maxMajor = Version.MAX().major;
2492 int maxMinor = Version.MAX().minor;
2493 if (majorVersion > maxMajor ||
2494 majorVersion * 1000 + minorVersion <
2495 Version.MIN().major * 1000 + Version.MIN().minor) {
2496 if (majorVersion == (maxMajor + 1))
2497 log.warning("big.major.version",
2498 currentClassFile,
2499 majorVersion,
2500 maxMajor);
2501 else
2502 throw badClassFile("wrong.version",
2503 Integer.toString(majorVersion),
2504 Integer.toString(minorVersion),
2505 Integer.toString(maxMajor),
2506 Integer.toString(maxMinor));
2507 }
2508
2509 indexPool();
2510 if (signatureBuffer.length < bp) {
2511 int ns = Integer.highestOneBit(bp) << 1;
2512 signatureBuffer = new byte[ns];
2513 }
2514 readClass(c);
2515 }
2516
2517 public void readClassFile(ClassSymbol c) {
2518 currentOwner = c;
2519 currentClassFile = c.classfile;
2520 warnedAttrs.clear();
2521 filling = true;
2522 target = null;
2523 repeatable = null;
2524 try {
2525 bp = 0;
2526 buf = readInputStream(buf, c.classfile.openInputStream());
2527 readClassBuffer(c);
2528 if (!missingTypeVariables.isEmpty() && !foundTypeVariables.isEmpty()) {
2529 List<Type> missing = missingTypeVariables;
2530 List<Type> found = foundTypeVariables;
2531 missingTypeVariables = List.nil();
2532 foundTypeVariables = List.nil();
2533 filling = false;
2534 ClassType ct = (ClassType)currentOwner.type;
2535 ct.supertype_field =
2536 types.subst(ct.supertype_field, missing, found);
2537 ct.interfaces_field =
2538 types.subst(ct.interfaces_field, missing, found);
2539 } else if (missingTypeVariables.isEmpty() !=
2540 foundTypeVariables.isEmpty()) {
2541 Name name = missingTypeVariables.head.tsym.name;
2542 throw badClassFile("undecl.type.var", name);
2543 }
2544
2545 if ((c.flags_field & Flags.ANNOTATION) != 0) {
2546 c.setAnnotationTypeMetadata(new AnnotationTypeMetadata(c, new CompleterDeproxy(c, target, repeatable)));
2547 } else {
2548 c.setAnnotationTypeMetadata(AnnotationTypeMetadata.notAnAnnotationType());
2549 }
2550
2551 if (c == currentModule.module_info) {
2552 if (interimUses.nonEmpty() || interimProvides.nonEmpty()) {
2553 Assert.check(currentModule.isCompleted());
2554 currentModule.usesProvidesCompleter =
2555 new UsesProvidesCompleter(currentModule, interimUses, interimProvides);
2556 } else {
2557 currentModule.uses = List.nil();
2558 currentModule.provides = List.nil();
2559 }
2560 }
2561 } catch (IOException ex) {
2562 throw badClassFile("unable.to.access.file", ex.getMessage());
2563 } catch (ArrayIndexOutOfBoundsException ex) {
2564 throw badClassFile("bad.class.file", c.flatname);
2565 } finally {
2566 interimUses = List.nil();
2567 interimProvides = List.nil();
2568 missingTypeVariables = List.nil();
2569 foundTypeVariables = List.nil();
2570 filling = false;
2571 }
2572 }
2573 // where
2574 private static byte[] readInputStream(byte[] buf, InputStream s) throws IOException {
2575 try {
2576 buf = ensureCapacity(buf, s.available());
2577 int r = s.read(buf);
2578 int bp = 0;
2579 while (r != -1) {
2580 bp += r;
2581 buf = ensureCapacity(buf, bp);
2582 r = s.read(buf, bp, buf.length - bp);
2583 }
2584 return buf;
2585 } finally {
2586 try {
2587 s.close();
2588 } catch (IOException e) {
2589 /* Ignore any errors, as this stream may have already
2590 * thrown a related exception which is the one that
2591 * should be reported.
2592 */
2593 }
2594 }
2595 }
2596 /*
2597 * ensureCapacity will increase the buffer as needed, taking note that
2598 * the new buffer will always be greater than the needed and never
2599 * exactly equal to the needed size or bp. If equal then the read (above)
2600 * will infinitely loop as buf.length - bp == 0.
2601 */
2602 private static byte[] ensureCapacity(byte[] buf, int needed) {
2603 if (buf.length <= needed) {
2604 byte[] old = buf;
2605 buf = new byte[Integer.highestOneBit(needed) << 1];
2606 System.arraycopy(old, 0, buf, 0, old.length);
2607 }
2608 return buf;
2609 }
2610
2611 /** We can only read a single class file at a time; this
2612 * flag keeps track of when we are currently reading a class
2613 * file.
2614 */
2615 public boolean filling = false;
2616
2617 /************************************************************************
2618 * Adjusting flags
2619 ***********************************************************************/
2620
2621 long adjustFieldFlags(long flags) {
2622 return flags;
2623 }
2624
2625 long adjustMethodFlags(long flags) {
2626 if ((flags & ACC_BRIDGE) != 0) {
2627 flags &= ~ACC_BRIDGE;
2628 flags |= BRIDGE;
2629 }
2630 if ((flags & ACC_VARARGS) != 0) {
2631 flags &= ~ACC_VARARGS;
2632 flags |= VARARGS;
2633 }
2634 return flags;
2635 }
2636
2637 long adjustClassFlags(long flags) {
2638 if ((flags & ACC_MODULE) != 0) {
2639 flags &= ~ACC_MODULE;
2640 flags |= MODULE;
2641 }
2642 return flags & ~ACC_SUPER; // SUPER and SYNCHRONIZED bits overloaded
2643 }
2644
2645 /**
2646 * A subclass of JavaFileObject for the sourcefile attribute found in a classfile.
2647 * The attribute is only the last component of the original filename, so is unlikely
2648 * to be valid as is, so operations other than those to access the name throw
2649 * UnsupportedOperationException
2650 */
2651 private static class SourceFileObject implements JavaFileObject {
2652
2653 /** The file's name.
2654 */
2655 private final Name name;
2656 private final Name flatname;
2657
2658 public SourceFileObject(Name name, Name flatname) {
2659 this.name = name;
2660 this.flatname = flatname;
2661 }
2662
2663 @Override @DefinedBy(Api.COMPILER)
2664 public URI toUri() {
2665 try {
2666 return new URI(null, name.toString(), null);
2667 } catch (URISyntaxException e) {
2668 throw new PathFileObject.CannotCreateUriError(name.toString(), e);
2669 }
2670 }
2671
2672 @Override @DefinedBy(Api.COMPILER)
2673 public String getName() {
2674 return name.toString();
2675 }
2676
2677 @Override @DefinedBy(Api.COMPILER)
2678 public JavaFileObject.Kind getKind() {
2679 return BaseFileManager.getKind(getName());
2680 }
2681
2682 @Override @DefinedBy(Api.COMPILER)
2683 public InputStream openInputStream() {
2684 throw new UnsupportedOperationException();
2685 }
2686
2687 @Override @DefinedBy(Api.COMPILER)
2688 public OutputStream openOutputStream() {
2689 throw new UnsupportedOperationException();
2690 }
2691
2692 @Override @DefinedBy(Api.COMPILER)
2693 public CharBuffer getCharContent(boolean ignoreEncodingErrors) {
2694 throw new UnsupportedOperationException();
2695 }
2696
2697 @Override @DefinedBy(Api.COMPILER)
2698 public Reader openReader(boolean ignoreEncodingErrors) {
2699 throw new UnsupportedOperationException();
2700 }
2701
2702 @Override @DefinedBy(Api.COMPILER)
2703 public Writer openWriter() {
2704 throw new UnsupportedOperationException();
2705 }
2706
2707 @Override @DefinedBy(Api.COMPILER)
2708 public long getLastModified() {
2709 throw new UnsupportedOperationException();
2710 }
2711
2712 @Override @DefinedBy(Api.COMPILER)
2713 public boolean delete() {
2714 throw new UnsupportedOperationException();
2715 }
2716
2717 @Override @DefinedBy(Api.COMPILER)
2718 public boolean isNameCompatible(String simpleName, JavaFileObject.Kind kind) {
2719 return true; // fail-safe mode
2720 }
2721
2722 @Override @DefinedBy(Api.COMPILER)
2723 public NestingKind getNestingKind() {
2724 return null;
2725 }
2726
2727 @Override @DefinedBy(Api.COMPILER)
2728 public Modifier getAccessLevel() {
2729 return null;
2730 }
2731
2732 /**
2733 * Check if two file objects are equal.
2734 * SourceFileObjects are just placeholder objects for the value of a
2735 * SourceFile attribute, and do not directly represent specific files.
2736 * Two SourceFileObjects are equal if their names are equal.
2737 */
2738 @Override
2739 public boolean equals(Object other) {
2740 if (this == other)
2741 return true;
2742
2743 if (!(other instanceof SourceFileObject))
2744 return false;
2745
2746 SourceFileObject o = (SourceFileObject) other;
2747 return name.equals(o.name);
2748 }
2749
2750 @Override
2751 public int hashCode() {
2752 return name.hashCode();
2753 }
2754 }
2755
2756 private class CompleterDeproxy implements AnnotationTypeCompleter {
2757 ClassSymbol proxyOn;
2758 CompoundAnnotationProxy target;
2759 CompoundAnnotationProxy repeatable;
2760
2761 public CompleterDeproxy(ClassSymbol c, CompoundAnnotationProxy target,
2762 CompoundAnnotationProxy repeatable)
2763 {
2764 this.proxyOn = c;
2765 this.target = target;
2766 this.repeatable = repeatable;
2767 }
2768
2769 @Override
2770 public void complete(ClassSymbol sym) {
2771 Assert.check(proxyOn == sym);
2772 Attribute.Compound theTarget = null, theRepeatable = null;
2773 AnnotationDeproxy deproxy;
2774
2775 try {
2776 if (target != null) {
2777 deproxy = new AnnotationDeproxy(proxyOn);
2778 theTarget = deproxy.deproxyCompound(target);
2779 }
2780
2781 if (repeatable != null) {
2782 deproxy = new AnnotationDeproxy(proxyOn);
2783 theRepeatable = deproxy.deproxyCompound(repeatable);
2784 }
2785 } catch (Exception e) {
2786 throw new CompletionFailure(sym, e.getMessage());
2787 }
2788
2789 sym.getAnnotationTypeMetadata().setTarget(theTarget);
2790 sym.getAnnotationTypeMetadata().setRepeatable(theRepeatable);
2791 }
2792 }
2793
2794 private static final class InterimUsesDirective {
2795 public final Name service;
2796
2797 public InterimUsesDirective(Name service) {
2798 this.service = service;
2799 }
2800
2801 }
2802
2803 private static final class InterimProvidesDirective {
2804 public final Name service;
2805 public final Name impl;
2806
2807 public InterimProvidesDirective(Name service, Name impl) {
2808 this.service = service;
2809 this.impl = impl;
2810 }
2811
2812 }
2813
2814 private final class UsesProvidesCompleter implements Completer {
2815 private final ModuleSymbol currentModule;
2816 private final List<InterimUsesDirective> interimUsesCopy;
2817 private final List<InterimProvidesDirective> interimProvidesCopy;
2818
2819 public UsesProvidesCompleter(ModuleSymbol currentModule, List<InterimUsesDirective> interimUsesCopy, List<InterimProvidesDirective> interimProvidesCopy) {
2820 this.currentModule = currentModule;
2821 this.interimUsesCopy = interimUsesCopy;
2822 this.interimProvidesCopy = interimProvidesCopy;
2823 }
2824
2825 @Override
2826 public void complete(Symbol sym) throws CompletionFailure {
2827 ListBuffer<Directive> directives = new ListBuffer<>();
2828 directives.addAll(currentModule.directives);
2829 ListBuffer<UsesDirective> uses = new ListBuffer<>();
2830 for (InterimUsesDirective interim : interimUsesCopy) {
2831 UsesDirective d = new UsesDirective(syms.enterClass(currentModule, interim.service));
2832 uses.add(d);
2833 directives.add(d);
2834 }
2835 currentModule.uses = uses.toList();
2836 ListBuffer<ProvidesDirective> provides = new ListBuffer<>();
2837 for (InterimProvidesDirective interim : interimProvidesCopy) {
2838 ProvidesDirective d = new ProvidesDirective(syms.enterClass(currentModule, interim.service),
2839 syms.enterClass(currentModule, interim.impl));
2840 provides.add(d);
2841 directives.add(d);
2842 }
2843 currentModule.provides = provides.toList();
2844 currentModule.directives = directives.toList();
2845 }
2846 }
2847 }