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