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src/share/classes/com/sun/tools/javac/jvm/ClassReader.java@9a66ca7c79fa
src/share/classes/com/sun/tools/javac/jvm/ClassReader.java
Sat, 01 Dec 2007 00:00:00 +0000
- author
- duke
- date
- Sat, 01 Dec 2007 00:00:00 +0000
- changeset 1
- 9a66ca7c79fa
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1 /*
2 * Copyright 1999-2006 Sun Microsystems, Inc. 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. Sun designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Sun 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
22 * CA 95054 USA or visit www.sun.com if you need additional information or
23 * have any questions.
24 */
26 package com.sun.tools.javac.jvm;
28 import java.io.*;
29 import java.net.URI;
30 import java.nio.CharBuffer;
31 import java.util.EnumSet;
32 import java.util.HashMap;
33 import java.util.Map;
34 import java.util.Set;
35 import javax.lang.model.SourceVersion;
36 import javax.tools.JavaFileObject;
37 import javax.tools.JavaFileManager;
38 import javax.tools.StandardJavaFileManager;
40 import com.sun.tools.javac.comp.Annotate;
41 import com.sun.tools.javac.code.*;
42 import com.sun.tools.javac.code.Type.*;
43 import com.sun.tools.javac.code.Symbol.*;
44 import com.sun.tools.javac.code.Symtab;
45 import com.sun.tools.javac.util.*;
46 import com.sun.tools.javac.util.List;
48 import static com.sun.tools.javac.code.Flags.*;
49 import static com.sun.tools.javac.code.Kinds.*;
50 import static com.sun.tools.javac.code.TypeTags.*;
51 import com.sun.tools.javac.jvm.ClassFile.NameAndType;
52 import javax.tools.JavaFileManager.Location;
53 import static javax.tools.StandardLocation.*;
55 /** This class provides operations to read a classfile into an internal
56 * representation. The internal representation is anchored in a
57 * ClassSymbol which contains in its scope symbol representations
58 * for all other definitions in the classfile. Top-level Classes themselves
59 * appear as members of the scopes of PackageSymbols.
60 *
61 * <p><b>This is NOT part of any API supported by Sun Microsystems. If
62 * you write code that depends on this, you do so at your own risk.
63 * This code and its internal interfaces are subject to change or
64 * deletion without notice.</b>
65 */
66 public class ClassReader extends ClassFile implements Completer {
67 /** The context key for the class reader. */
68 protected static final Context.Key<ClassReader> classReaderKey =
69 new Context.Key<ClassReader>();
71 Annotate annotate;
73 /** Switch: verbose output.
74 */
75 boolean verbose;
77 /** Switch: check class file for correct minor version, unrecognized
78 * attributes.
79 */
80 boolean checkClassFile;
82 /** Switch: read constant pool and code sections. This switch is initially
83 * set to false but can be turned on from outside.
84 */
85 public boolean readAllOfClassFile = false;
87 /** Switch: read GJ signature information.
88 */
89 boolean allowGenerics;
91 /** Switch: read varargs attribute.
92 */
93 boolean allowVarargs;
95 /** Switch: allow annotations.
96 */
97 boolean allowAnnotations;
99 /** Switch: preserve parameter names from the variable table.
100 */
101 public boolean saveParameterNames;
103 /**
104 * Switch: cache completion failures unless -XDdev is used
105 */
106 private boolean cacheCompletionFailure;
108 /**
109 * Switch: prefer source files instead of newer when both source
110 * and class are available
111 **/
112 public boolean preferSource;
114 /** The log to use for verbose output
115 */
116 final Log log;
118 /** The symbol table. */
119 Symtab syms;
121 Types types;
123 /** The name table. */
124 final Name.Table names;
126 /** Force a completion failure on this name
127 */
128 final Name completionFailureName;
130 /** Access to files
131 */
132 private final JavaFileManager fileManager;
134 /** Can be reassigned from outside:
135 * the completer to be used for ".java" files. If this remains unassigned
136 * ".java" files will not be loaded.
137 */
138 public SourceCompleter sourceCompleter = null;
140 /** A hashtable containing the encountered top-level and member classes,
141 * indexed by flat names. The table does not contain local classes.
142 */
143 private Map<Name,ClassSymbol> classes;
145 /** A hashtable containing the encountered packages.
146 */
147 private Map<Name, PackageSymbol> packages;
149 /** The current scope where type variables are entered.
150 */
151 protected Scope typevars;
153 /** The path name of the class file currently being read.
154 */
155 protected JavaFileObject currentClassFile = null;
157 /** The class or method currently being read.
158 */
159 protected Symbol currentOwner = null;
161 /** The buffer containing the currently read class file.
162 */
163 byte[] buf = new byte[0x0fff0];
165 /** The current input pointer.
166 */
167 int bp;
169 /** The objects of the constant pool.
170 */
171 Object[] poolObj;
173 /** For every constant pool entry, an index into buf where the
174 * defining section of the entry is found.
175 */
176 int[] poolIdx;
178 /** Get the ClassReader instance for this invocation. */
179 public static ClassReader instance(Context context) {
180 ClassReader instance = context.get(classReaderKey);
181 if (instance == null)
182 instance = new ClassReader(context, true);
183 return instance;
184 }
186 /** Initialize classes and packages, treating this as the definitive classreader. */
187 public void init(Symtab syms) {
188 init(syms, true);
189 }
191 /** Initialize classes and packages, optionally treating this as
192 * the definitive classreader.
193 */
194 private void init(Symtab syms, boolean definitive) {
195 if (classes != null) return;
197 if (definitive) {
198 assert packages == null || packages == syms.packages;
199 packages = syms.packages;
200 assert classes == null || classes == syms.classes;
201 classes = syms.classes;
202 } else {
203 packages = new HashMap<Name, PackageSymbol>();
204 classes = new HashMap<Name, ClassSymbol>();
205 }
207 packages.put(names.empty, syms.rootPackage);
208 syms.rootPackage.completer = this;
209 syms.unnamedPackage.completer = this;
210 }
212 /** Construct a new class reader, optionally treated as the
213 * definitive classreader for this invocation.
214 */
215 protected ClassReader(Context context, boolean definitive) {
216 if (definitive) context.put(classReaderKey, this);
218 names = Name.Table.instance(context);
219 syms = Symtab.instance(context);
220 types = Types.instance(context);
221 fileManager = context.get(JavaFileManager.class);
222 if (fileManager == null)
223 throw new AssertionError("FileManager initialization error");
225 init(syms, definitive);
226 log = Log.instance(context);
228 Options options = Options.instance(context);
229 annotate = Annotate.instance(context);
230 verbose = options.get("-verbose") != null;
231 checkClassFile = options.get("-checkclassfile") != null;
232 Source source = Source.instance(context);
233 allowGenerics = source.allowGenerics();
234 allowVarargs = source.allowVarargs();
235 allowAnnotations = source.allowAnnotations();
236 saveParameterNames = options.get("save-parameter-names") != null;
237 cacheCompletionFailure = options.get("dev") == null;
238 preferSource = "source".equals(options.get("-Xprefer"));
240 completionFailureName =
241 (options.get("failcomplete") != null)
242 ? names.fromString(options.get("failcomplete"))
243 : null;
245 typevars = new Scope(syms.noSymbol);
246 }
248 /** Add member to class unless it is synthetic.
249 */
250 private void enterMember(ClassSymbol c, Symbol sym) {
251 if ((sym.flags_field & (SYNTHETIC|BRIDGE)) != SYNTHETIC)
252 c.members_field.enter(sym);
253 }
255 /************************************************************************
256 * Error Diagnoses
257 ***********************************************************************/
259 public static class BadClassFile extends CompletionFailure {
260 private static final long serialVersionUID = 0;
262 /**
263 * @param msg A localized message.
264 */
265 public BadClassFile(ClassSymbol c, Object cname, Object msg) {
266 super(c, Log.getLocalizedString("bad.class.file.header",
267 cname, msg));
268 }
269 }
271 public BadClassFile badClassFile(String key, Object... args) {
272 return new BadClassFile (
273 currentOwner.enclClass(),
274 currentClassFile,
275 Log.getLocalizedString(key, args));
276 }
278 /************************************************************************
279 * Buffer Access
280 ***********************************************************************/
282 /** Read a character.
283 */
284 char nextChar() {
285 return (char)(((buf[bp++] & 0xFF) << 8) + (buf[bp++] & 0xFF));
286 }
288 /** Read an integer.
289 */
290 int nextInt() {
291 return
292 ((buf[bp++] & 0xFF) << 24) +
293 ((buf[bp++] & 0xFF) << 16) +
294 ((buf[bp++] & 0xFF) << 8) +
295 (buf[bp++] & 0xFF);
296 }
298 /** Extract a character at position bp from buf.
299 */
300 char getChar(int bp) {
301 return
302 (char)(((buf[bp] & 0xFF) << 8) + (buf[bp+1] & 0xFF));
303 }
305 /** Extract an integer at position bp from buf.
306 */
307 int getInt(int bp) {
308 return
309 ((buf[bp] & 0xFF) << 24) +
310 ((buf[bp+1] & 0xFF) << 16) +
311 ((buf[bp+2] & 0xFF) << 8) +
312 (buf[bp+3] & 0xFF);
313 }
316 /** Extract a long integer at position bp from buf.
317 */
318 long getLong(int bp) {
319 DataInputStream bufin =
320 new DataInputStream(new ByteArrayInputStream(buf, bp, 8));
321 try {
322 return bufin.readLong();
323 } catch (IOException e) {
324 throw new AssertionError(e);
325 }
326 }
328 /** Extract a float at position bp from buf.
329 */
330 float getFloat(int bp) {
331 DataInputStream bufin =
332 new DataInputStream(new ByteArrayInputStream(buf, bp, 4));
333 try {
334 return bufin.readFloat();
335 } catch (IOException e) {
336 throw new AssertionError(e);
337 }
338 }
340 /** Extract a double at position bp from buf.
341 */
342 double getDouble(int bp) {
343 DataInputStream bufin =
344 new DataInputStream(new ByteArrayInputStream(buf, bp, 8));
345 try {
346 return bufin.readDouble();
347 } catch (IOException e) {
348 throw new AssertionError(e);
349 }
350 }
352 /************************************************************************
353 * Constant Pool Access
354 ***********************************************************************/
356 /** Index all constant pool entries, writing their start addresses into
357 * poolIdx.
358 */
359 void indexPool() {
360 poolIdx = new int[nextChar()];
361 poolObj = new Object[poolIdx.length];
362 int i = 1;
363 while (i < poolIdx.length) {
364 poolIdx[i++] = bp;
365 byte tag = buf[bp++];
366 switch (tag) {
367 case CONSTANT_Utf8: case CONSTANT_Unicode: {
368 int len = nextChar();
369 bp = bp + len;
370 break;
371 }
372 case CONSTANT_Class:
373 case CONSTANT_String:
374 bp = bp + 2;
375 break;
376 case CONSTANT_Fieldref:
377 case CONSTANT_Methodref:
378 case CONSTANT_InterfaceMethodref:
379 case CONSTANT_NameandType:
380 case CONSTANT_Integer:
381 case CONSTANT_Float:
382 bp = bp + 4;
383 break;
384 case CONSTANT_Long:
385 case CONSTANT_Double:
386 bp = bp + 8;
387 i++;
388 break;
389 default:
390 throw badClassFile("bad.const.pool.tag.at",
391 Byte.toString(tag),
392 Integer.toString(bp -1));
393 }
394 }
395 }
397 /** Read constant pool entry at start address i, use pool as a cache.
398 */
399 Object readPool(int i) {
400 Object result = poolObj[i];
401 if (result != null) return result;
403 int index = poolIdx[i];
404 if (index == 0) return null;
406 byte tag = buf[index];
407 switch (tag) {
408 case CONSTANT_Utf8:
409 poolObj[i] = names.fromUtf(buf, index + 3, getChar(index + 1));
410 break;
411 case CONSTANT_Unicode:
412 throw badClassFile("unicode.str.not.supported");
413 case CONSTANT_Class:
414 poolObj[i] = readClassOrType(getChar(index + 1));
415 break;
416 case CONSTANT_String:
417 // FIXME: (footprint) do not use toString here
418 poolObj[i] = readName(getChar(index + 1)).toString();
419 break;
420 case CONSTANT_Fieldref: {
421 ClassSymbol owner = readClassSymbol(getChar(index + 1));
422 NameAndType nt = (NameAndType)readPool(getChar(index + 3));
423 poolObj[i] = new VarSymbol(0, nt.name, nt.type, owner);
424 break;
425 }
426 case CONSTANT_Methodref:
427 case CONSTANT_InterfaceMethodref: {
428 ClassSymbol owner = readClassSymbol(getChar(index + 1));
429 NameAndType nt = (NameAndType)readPool(getChar(index + 3));
430 poolObj[i] = new MethodSymbol(0, nt.name, nt.type, owner);
431 break;
432 }
433 case CONSTANT_NameandType:
434 poolObj[i] = new NameAndType(
435 readName(getChar(index + 1)),
436 readType(getChar(index + 3)));
437 break;
438 case CONSTANT_Integer:
439 poolObj[i] = getInt(index + 1);
440 break;
441 case CONSTANT_Float:
442 poolObj[i] = new Float(getFloat(index + 1));
443 break;
444 case CONSTANT_Long:
445 poolObj[i] = new Long(getLong(index + 1));
446 break;
447 case CONSTANT_Double:
448 poolObj[i] = new Double(getDouble(index + 1));
449 break;
450 default:
451 throw badClassFile("bad.const.pool.tag", Byte.toString(tag));
452 }
453 return poolObj[i];
454 }
456 /** Read signature and convert to type.
457 */
458 Type readType(int i) {
459 int index = poolIdx[i];
460 return sigToType(buf, index + 3, getChar(index + 1));
461 }
463 /** If name is an array type or class signature, return the
464 * corresponding type; otherwise return a ClassSymbol with given name.
465 */
466 Object readClassOrType(int i) {
467 int index = poolIdx[i];
468 int len = getChar(index + 1);
469 int start = index + 3;
470 assert buf[start] == '[' || buf[start + len - 1] != ';';
471 // by the above assertion, the following test can be
472 // simplified to (buf[start] == '[')
473 return (buf[start] == '[' || buf[start + len - 1] == ';')
474 ? (Object)sigToType(buf, start, len)
475 : (Object)enterClass(names.fromUtf(internalize(buf, start,
476 len)));
477 }
479 /** Read signature and convert to type parameters.
480 */
481 List<Type> readTypeParams(int i) {
482 int index = poolIdx[i];
483 return sigToTypeParams(buf, index + 3, getChar(index + 1));
484 }
486 /** Read class entry.
487 */
488 ClassSymbol readClassSymbol(int i) {
489 return (ClassSymbol) (readPool(i));
490 }
492 /** Read name.
493 */
494 Name readName(int i) {
495 return (Name) (readPool(i));
496 }
498 /************************************************************************
499 * Reading Types
500 ***********************************************************************/
502 /** The unread portion of the currently read type is
503 * signature[sigp..siglimit-1].
504 */
505 byte[] signature;
506 int sigp;
507 int siglimit;
508 boolean sigEnterPhase = false;
510 /** Convert signature to type, where signature is a name.
511 */
512 Type sigToType(Name sig) {
513 return sig == null
514 ? null
515 : sigToType(sig.table.names, sig.index, sig.len);
516 }
518 /** Convert signature to type, where signature is a byte array segment.
519 */
520 Type sigToType(byte[] sig, int offset, int len) {
521 signature = sig;
522 sigp = offset;
523 siglimit = offset + len;
524 return sigToType();
525 }
527 /** Convert signature to type, where signature is implicit.
528 */
529 Type sigToType() {
530 switch ((char) signature[sigp]) {
531 case 'T':
532 sigp++;
533 int start = sigp;
534 while (signature[sigp] != ';') sigp++;
535 sigp++;
536 return sigEnterPhase
537 ? Type.noType
538 : findTypeVar(names.fromUtf(signature, start, sigp - 1 - start));
539 case '+': {
540 sigp++;
541 Type t = sigToType();
542 return new WildcardType(t, BoundKind.EXTENDS,
543 syms.boundClass);
544 }
545 case '*':
546 sigp++;
547 return new WildcardType(syms.objectType, BoundKind.UNBOUND,
548 syms.boundClass);
549 case '-': {
550 sigp++;
551 Type t = sigToType();
552 return new WildcardType(t, BoundKind.SUPER,
553 syms.boundClass);
554 }
555 case 'B':
556 sigp++;
557 return syms.byteType;
558 case 'C':
559 sigp++;
560 return syms.charType;
561 case 'D':
562 sigp++;
563 return syms.doubleType;
564 case 'F':
565 sigp++;
566 return syms.floatType;
567 case 'I':
568 sigp++;
569 return syms.intType;
570 case 'J':
571 sigp++;
572 return syms.longType;
573 case 'L':
574 {
575 // int oldsigp = sigp;
576 Type t = classSigToType();
577 if (sigp < siglimit && signature[sigp] == '.')
578 throw badClassFile("deprecated inner class signature syntax " +
579 "(please recompile from source)");
580 /*
581 System.err.println(" decoded " +
582 new String(signature, oldsigp, sigp-oldsigp) +
583 " => " + t + " outer " + t.outer());
584 */
585 return t;
586 }
587 case 'S':
588 sigp++;
589 return syms.shortType;
590 case 'V':
591 sigp++;
592 return syms.voidType;
593 case 'Z':
594 sigp++;
595 return syms.booleanType;
596 case '[':
597 sigp++;
598 return new ArrayType(sigToType(), syms.arrayClass);
599 case '(':
600 sigp++;
601 List<Type> argtypes = sigToTypes(')');
602 Type restype = sigToType();
603 List<Type> thrown = List.nil();
604 while (signature[sigp] == '^') {
605 sigp++;
606 thrown = thrown.prepend(sigToType());
607 }
608 return new MethodType(argtypes,
609 restype,
610 thrown.reverse(),
611 syms.methodClass);
612 case '<':
613 typevars = typevars.dup(currentOwner);
614 Type poly = new ForAll(sigToTypeParams(), sigToType());
615 typevars = typevars.leave();
616 return poly;
617 default:
618 throw badClassFile("bad.signature",
619 Convert.utf2string(signature, sigp, 10));
620 }
621 }
623 byte[] signatureBuffer = new byte[0];
624 int sbp = 0;
625 /** Convert class signature to type, where signature is implicit.
626 */
627 Type classSigToType() {
628 if (signature[sigp] != 'L')
629 throw badClassFile("bad.class.signature",
630 Convert.utf2string(signature, sigp, 10));
631 sigp++;
632 Type outer = Type.noType;
633 int startSbp = sbp;
635 while (true) {
636 final byte c = signature[sigp++];
637 switch (c) {
639 case ';': { // end
640 ClassSymbol t = enterClass(names.fromUtf(signatureBuffer,
641 startSbp,
642 sbp - startSbp));
643 if (outer == Type.noType)
644 outer = t.erasure(types);
645 else
646 outer = new ClassType(outer, List.<Type>nil(), t);
647 sbp = startSbp;
648 return outer;
649 }
651 case '<': // generic arguments
652 ClassSymbol t = enterClass(names.fromUtf(signatureBuffer,
653 startSbp,
654 sbp - startSbp));
655 outer = new ClassType(outer, sigToTypes('>'), t) {
656 boolean completed = false;
657 public Type getEnclosingType() {
658 if (!completed) {
659 completed = true;
660 tsym.complete();
661 Type enclosingType = tsym.type.getEnclosingType();
662 if (enclosingType != Type.noType) {
663 List<Type> typeArgs =
664 super.getEnclosingType().allparams();
665 List<Type> typeParams =
666 enclosingType.allparams();
667 if (typeParams.length() != typeArgs.length()) {
668 // no "rare" types
669 super.setEnclosingType(types.erasure(enclosingType));
670 } else {
671 super.setEnclosingType(types.subst(enclosingType,
672 typeParams,
673 typeArgs));
674 }
675 } else {
676 super.setEnclosingType(Type.noType);
677 }
678 }
679 return super.getEnclosingType();
680 }
681 public void setEnclosingType(Type outer) {
682 throw new UnsupportedOperationException();
683 }
684 };
685 switch (signature[sigp++]) {
686 case ';':
687 if (sigp < signature.length && signature[sigp] == '.') {
688 // support old-style GJC signatures
689 // The signature produced was
690 // Lfoo/Outer<Lfoo/X;>;.Lfoo/Outer$Inner<Lfoo/Y;>;
691 // rather than say
692 // Lfoo/Outer<Lfoo/X;>.Inner<Lfoo/Y;>;
693 // so we skip past ".Lfoo/Outer$"
694 sigp += (sbp - startSbp) + // "foo/Outer"
695 3; // ".L" and "$"
696 signatureBuffer[sbp++] = (byte)'$';
697 break;
698 } else {
699 sbp = startSbp;
700 return outer;
701 }
702 case '.':
703 signatureBuffer[sbp++] = (byte)'$';
704 break;
705 default:
706 throw new AssertionError(signature[sigp-1]);
707 }
708 continue;
710 case '.':
711 signatureBuffer[sbp++] = (byte)'$';
712 continue;
713 case '/':
714 signatureBuffer[sbp++] = (byte)'.';
715 continue;
716 default:
717 signatureBuffer[sbp++] = c;
718 continue;
719 }
720 }
721 }
723 /** Convert (implicit) signature to list of types
724 * until `terminator' is encountered.
725 */
726 List<Type> sigToTypes(char terminator) {
727 List<Type> head = List.of(null);
728 List<Type> tail = head;
729 while (signature[sigp] != terminator)
730 tail = tail.setTail(List.of(sigToType()));
731 sigp++;
732 return head.tail;
733 }
735 /** Convert signature to type parameters, where signature is a name.
736 */
737 List<Type> sigToTypeParams(Name name) {
738 return sigToTypeParams(name.table.names, name.index, name.len);
739 }
741 /** Convert signature to type parameters, where signature is a byte
742 * array segment.
743 */
744 List<Type> sigToTypeParams(byte[] sig, int offset, int len) {
745 signature = sig;
746 sigp = offset;
747 siglimit = offset + len;
748 return sigToTypeParams();
749 }
751 /** Convert signature to type parameters, where signature is implicit.
752 */
753 List<Type> sigToTypeParams() {
754 List<Type> tvars = List.nil();
755 if (signature[sigp] == '<') {
756 sigp++;
757 int start = sigp;
758 sigEnterPhase = true;
759 while (signature[sigp] != '>')
760 tvars = tvars.prepend(sigToTypeParam());
761 sigEnterPhase = false;
762 sigp = start;
763 while (signature[sigp] != '>')
764 sigToTypeParam();
765 sigp++;
766 }
767 return tvars.reverse();
768 }
770 /** Convert (implicit) signature to type parameter.
771 */
772 Type sigToTypeParam() {
773 int start = sigp;
774 while (signature[sigp] != ':') sigp++;
775 Name name = names.fromUtf(signature, start, sigp - start);
776 TypeVar tvar;
777 if (sigEnterPhase) {
778 tvar = new TypeVar(name, currentOwner, syms.botType);
779 typevars.enter(tvar.tsym);
780 } else {
781 tvar = (TypeVar)findTypeVar(name);
782 }
783 List<Type> bounds = List.nil();
784 Type st = null;
785 if (signature[sigp] == ':' && signature[sigp+1] == ':') {
786 sigp++;
787 st = syms.objectType;
788 }
789 while (signature[sigp] == ':') {
790 sigp++;
791 bounds = bounds.prepend(sigToType());
792 }
793 if (!sigEnterPhase) {
794 types.setBounds(tvar, bounds.reverse(), st);
795 }
796 return tvar;
797 }
799 /** Find type variable with given name in `typevars' scope.
800 */
801 Type findTypeVar(Name name) {
802 Scope.Entry e = typevars.lookup(name);
803 if (e.scope != null) {
804 return e.sym.type;
805 } else {
806 if (readingClassAttr) {
807 // While reading the class attribute, the supertypes
808 // might refer to a type variable from an enclosing element
809 // (method or class).
810 // If the type variable is defined in the enclosing class,
811 // we can actually find it in
812 // currentOwner.owner.type.getTypeArguments()
813 // However, until we have read the enclosing method attribute
814 // we don't know for sure if this owner is correct. It could
815 // be a method and there is no way to tell before reading the
816 // enclosing method attribute.
817 TypeVar t = new TypeVar(name, currentOwner, syms.botType);
818 missingTypeVariables = missingTypeVariables.prepend(t);
819 // System.err.println("Missing type var " + name);
820 return t;
821 }
822 throw badClassFile("undecl.type.var", name);
823 }
824 }
826 /************************************************************************
827 * Reading Attributes
828 ***********************************************************************/
830 /** Report unrecognized attribute.
831 */
832 void unrecognized(Name attrName) {
833 if (checkClassFile)
834 printCCF("ccf.unrecognized.attribute", attrName);
835 }
837 /** Read member attribute.
838 */
839 void readMemberAttr(Symbol sym, Name attrName, int attrLen) {
840 //- System.err.println(" z " + sym + ", " + attrName + ", " + attrLen);
841 if (attrName == names.ConstantValue) {
842 Object v = readPool(nextChar());
843 // Ignore ConstantValue attribute if field not final.
844 if ((sym.flags() & FINAL) != 0)
845 ((VarSymbol)sym).setData(v);
846 } else if (attrName == names.Code) {
847 if (readAllOfClassFile || saveParameterNames)
848 ((MethodSymbol)sym).code = readCode(sym);
849 else
850 bp = bp + attrLen;
851 } else if (attrName == names.Exceptions) {
852 int nexceptions = nextChar();
853 List<Type> thrown = List.nil();
854 for (int j = 0; j < nexceptions; j++)
855 thrown = thrown.prepend(readClassSymbol(nextChar()).type);
856 if (sym.type.getThrownTypes().isEmpty())
857 sym.type.asMethodType().thrown = thrown.reverse();
858 } else if (attrName == names.Synthetic) {
859 // bridge methods are visible when generics not enabled
860 if (allowGenerics || (sym.flags_field & BRIDGE) == 0)
861 sym.flags_field |= SYNTHETIC;
862 } else if (attrName == names.Bridge) {
863 sym.flags_field |= BRIDGE;
864 if (!allowGenerics)
865 sym.flags_field &= ~SYNTHETIC;
866 } else if (attrName == names.Deprecated) {
867 sym.flags_field |= DEPRECATED;
868 } else if (attrName == names.Varargs) {
869 if (allowVarargs) sym.flags_field |= VARARGS;
870 } else if (attrName == names.Annotation) {
871 if (allowAnnotations) sym.flags_field |= ANNOTATION;
872 } else if (attrName == names.Enum) {
873 sym.flags_field |= ENUM;
874 } else if (allowGenerics && attrName == names.Signature) {
875 List<Type> thrown = sym.type.getThrownTypes();
876 sym.type = readType(nextChar());
877 //- System.err.println(" # " + sym.type);
878 if (sym.kind == MTH && sym.type.getThrownTypes().isEmpty())
879 sym.type.asMethodType().thrown = thrown;
880 } else if (attrName == names.RuntimeVisibleAnnotations) {
881 attachAnnotations(sym);
882 } else if (attrName == names.RuntimeInvisibleAnnotations) {
883 attachAnnotations(sym);
884 } else if (attrName == names.RuntimeVisibleParameterAnnotations) {
885 attachParameterAnnotations(sym);
886 } else if (attrName == names.RuntimeInvisibleParameterAnnotations) {
887 attachParameterAnnotations(sym);
888 } else if (attrName == names.LocalVariableTable) {
889 int newbp = bp + attrLen;
890 if (saveParameterNames) {
891 // pick up parameter names from the variable table
892 List<Name> parameterNames = List.nil();
893 int firstParam = ((sym.flags() & STATIC) == 0) ? 1 : 0;
894 int endParam = firstParam + Code.width(sym.type.getParameterTypes());
895 int numEntries = nextChar();
896 for (int i=0; i<numEntries; i++) {
897 int start_pc = nextChar();
898 int length = nextChar();
899 int nameIndex = nextChar();
900 int sigIndex = nextChar();
901 int register = nextChar();
902 if (start_pc == 0 &&
903 firstParam <= register &&
904 register < endParam) {
905 int index = firstParam;
906 for (Type t : sym.type.getParameterTypes()) {
907 if (index == register) {
908 parameterNames = parameterNames.prepend(readName(nameIndex));
909 break;
910 }
911 index += Code.width(t);
912 }
913 }
914 }
915 parameterNames = parameterNames.reverse();
916 ((MethodSymbol)sym).savedParameterNames = parameterNames;
917 }
918 bp = newbp;
919 } else if (attrName == names.AnnotationDefault) {
920 attachAnnotationDefault(sym);
921 } else if (attrName == names.EnclosingMethod) {
922 int newbp = bp + attrLen;
923 readEnclosingMethodAttr(sym);
924 bp = newbp;
925 } else {
926 unrecognized(attrName);
927 bp = bp + attrLen;
928 }
929 }
931 void readEnclosingMethodAttr(Symbol sym) {
932 // sym is a nested class with an "Enclosing Method" attribute
933 // remove sym from it's current owners scope and place it in
934 // the scope specified by the attribute
935 sym.owner.members().remove(sym);
936 ClassSymbol self = (ClassSymbol)sym;
937 ClassSymbol c = readClassSymbol(nextChar());
938 NameAndType nt = (NameAndType)readPool(nextChar());
940 MethodSymbol m = findMethod(nt, c.members_field, self.flags());
941 if (nt != null && m == null)
942 throw badClassFile("bad.enclosing.method", self);
944 self.name = simpleBinaryName(self.flatname, c.flatname) ;
945 self.owner = m != null ? m : c;
946 if (self.name.len == 0)
947 self.fullname = null;
948 else
949 self.fullname = ClassSymbol.formFullName(self.name, self.owner);
951 if (m != null) {
952 ((ClassType)sym.type).setEnclosingType(m.type);
953 } else if ((self.flags_field & STATIC) == 0) {
954 ((ClassType)sym.type).setEnclosingType(c.type);
955 } else {
956 ((ClassType)sym.type).setEnclosingType(Type.noType);
957 }
958 enterTypevars(self);
959 if (!missingTypeVariables.isEmpty()) {
960 ListBuffer<Type> typeVars = new ListBuffer<Type>();
961 for (Type typevar : missingTypeVariables) {
962 typeVars.append(findTypeVar(typevar.tsym.name));
963 }
964 foundTypeVariables = typeVars.toList();
965 } else {
966 foundTypeVariables = List.nil();
967 }
968 }
970 // See java.lang.Class
971 private Name simpleBinaryName(Name self, Name enclosing) {
972 String simpleBinaryName = self.toString().substring(enclosing.toString().length());
973 if (simpleBinaryName.length() < 1 || simpleBinaryName.charAt(0) != '$')
974 throw badClassFile("bad.enclosing.method", self);
975 int index = 1;
976 while (index < simpleBinaryName.length() &&
977 isAsciiDigit(simpleBinaryName.charAt(index)))
978 index++;
979 return names.fromString(simpleBinaryName.substring(index));
980 }
982 private MethodSymbol findMethod(NameAndType nt, Scope scope, long flags) {
983 if (nt == null)
984 return null;
986 MethodType type = nt.type.asMethodType();
988 for (Scope.Entry e = scope.lookup(nt.name); e.scope != null; e = e.next())
989 if (e.sym.kind == MTH && isSameBinaryType(e.sym.type.asMethodType(), type))
990 return (MethodSymbol)e.sym;
992 if (nt.name != names.init)
993 // not a constructor
994 return null;
995 if ((flags & INTERFACE) != 0)
996 // no enclosing instance
997 return null;
998 if (nt.type.getParameterTypes().isEmpty())
999 // no parameters
1000 return null;
1002 // A constructor of an inner class.
1003 // Remove the first argument (the enclosing instance)
1004 nt.type = new MethodType(nt.type.getParameterTypes().tail,
1005 nt.type.getReturnType(),
1006 nt.type.getThrownTypes(),
1007 syms.methodClass);
1008 // Try searching again
1009 return findMethod(nt, scope, flags);
1010 }
1012 /** Similar to Types.isSameType but avoids completion */
1013 private boolean isSameBinaryType(MethodType mt1, MethodType mt2) {
1014 List<Type> types1 = types.erasure(mt1.getParameterTypes())
1015 .prepend(types.erasure(mt1.getReturnType()));
1016 List<Type> types2 = mt2.getParameterTypes().prepend(mt2.getReturnType());
1017 while (!types1.isEmpty() && !types2.isEmpty()) {
1018 if (types1.head.tsym != types2.head.tsym)
1019 return false;
1020 types1 = types1.tail;
1021 types2 = types2.tail;
1022 }
1023 return types1.isEmpty() && types2.isEmpty();
1024 }
1026 /**
1027 * Character.isDigit answers <tt>true</tt> to some non-ascii
1028 * digits. This one does not. <b>copied from java.lang.Class</b>
1029 */
1030 private static boolean isAsciiDigit(char c) {
1031 return '0' <= c && c <= '9';
1032 }
1034 /** Read member attributes.
1035 */
1036 void readMemberAttrs(Symbol sym) {
1037 char ac = nextChar();
1038 for (int i = 0; i < ac; i++) {
1039 Name attrName = readName(nextChar());
1040 int attrLen = nextInt();
1041 readMemberAttr(sym, attrName, attrLen);
1042 }
1043 }
1045 /** Read class attribute.
1046 */
1047 void readClassAttr(ClassSymbol c, Name attrName, int attrLen) {
1048 if (attrName == names.SourceFile) {
1049 Name n = readName(nextChar());
1050 c.sourcefile = new SourceFileObject(n);
1051 } else if (attrName == names.InnerClasses) {
1052 readInnerClasses(c);
1053 } else if (allowGenerics && attrName == names.Signature) {
1054 readingClassAttr = true;
1055 try {
1056 ClassType ct1 = (ClassType)c.type;
1057 assert c == currentOwner;
1058 ct1.typarams_field = readTypeParams(nextChar());
1059 ct1.supertype_field = sigToType();
1060 ListBuffer<Type> is = new ListBuffer<Type>();
1061 while (sigp != siglimit) is.append(sigToType());
1062 ct1.interfaces_field = is.toList();
1063 } finally {
1064 readingClassAttr = false;
1065 }
1066 } else {
1067 readMemberAttr(c, attrName, attrLen);
1068 }
1069 }
1070 private boolean readingClassAttr = false;
1071 private List<Type> missingTypeVariables = List.nil();
1072 private List<Type> foundTypeVariables = List.nil();
1074 /** Read class attributes.
1075 */
1076 void readClassAttrs(ClassSymbol c) {
1077 char ac = nextChar();
1078 for (int i = 0; i < ac; i++) {
1079 Name attrName = readName(nextChar());
1080 int attrLen = nextInt();
1081 readClassAttr(c, attrName, attrLen);
1082 }
1083 }
1085 /** Read code block.
1086 */
1087 Code readCode(Symbol owner) {
1088 nextChar(); // max_stack
1089 nextChar(); // max_locals
1090 final int code_length = nextInt();
1091 bp += code_length;
1092 final char exception_table_length = nextChar();
1093 bp += exception_table_length * 8;
1094 readMemberAttrs(owner);
1095 return null;
1096 }
1098 /************************************************************************
1099 * Reading Java-language annotations
1100 ***********************************************************************/
1102 /** Attach annotations.
1103 */
1104 void attachAnnotations(final Symbol sym) {
1105 int numAttributes = nextChar();
1106 if (numAttributes != 0) {
1107 ListBuffer<CompoundAnnotationProxy> proxies =
1108 new ListBuffer<CompoundAnnotationProxy>();
1109 for (int i = 0; i<numAttributes; i++) {
1110 CompoundAnnotationProxy proxy = readCompoundAnnotation();
1111 if (proxy.type.tsym == syms.proprietaryType.tsym)
1112 sym.flags_field |= PROPRIETARY;
1113 else
1114 proxies.append(proxy);
1115 }
1116 annotate.later(new AnnotationCompleter(sym, proxies.toList()));
1117 }
1118 }
1120 /** Attach parameter annotations.
1121 */
1122 void attachParameterAnnotations(final Symbol method) {
1123 final MethodSymbol meth = (MethodSymbol)method;
1124 int numParameters = buf[bp++] & 0xFF;
1125 List<VarSymbol> parameters = meth.params();
1126 int pnum = 0;
1127 while (parameters.tail != null) {
1128 attachAnnotations(parameters.head);
1129 parameters = parameters.tail;
1130 pnum++;
1131 }
1132 if (pnum != numParameters) {
1133 throw badClassFile("bad.runtime.invisible.param.annotations", meth);
1134 }
1135 }
1137 /** Attach the default value for an annotation element.
1138 */
1139 void attachAnnotationDefault(final Symbol sym) {
1140 final MethodSymbol meth = (MethodSymbol)sym; // only on methods
1141 final Attribute value = readAttributeValue();
1142 annotate.later(new AnnotationDefaultCompleter(meth, value));
1143 }
1145 Type readTypeOrClassSymbol(int i) {
1146 // support preliminary jsr175-format class files
1147 if (buf[poolIdx[i]] == CONSTANT_Class)
1148 return readClassSymbol(i).type;
1149 return readType(i);
1150 }
1151 Type readEnumType(int i) {
1152 // support preliminary jsr175-format class files
1153 int index = poolIdx[i];
1154 int length = getChar(index + 1);
1155 if (buf[index + length + 2] != ';')
1156 return enterClass(readName(i)).type;
1157 return readType(i);
1158 }
1160 CompoundAnnotationProxy readCompoundAnnotation() {
1161 Type t = readTypeOrClassSymbol(nextChar());
1162 int numFields = nextChar();
1163 ListBuffer<Pair<Name,Attribute>> pairs =
1164 new ListBuffer<Pair<Name,Attribute>>();
1165 for (int i=0; i<numFields; i++) {
1166 Name name = readName(nextChar());
1167 Attribute value = readAttributeValue();
1168 pairs.append(new Pair<Name,Attribute>(name, value));
1169 }
1170 return new CompoundAnnotationProxy(t, pairs.toList());
1171 }
1173 Attribute readAttributeValue() {
1174 char c = (char) buf[bp++];
1175 switch (c) {
1176 case 'B':
1177 return new Attribute.Constant(syms.byteType, readPool(nextChar()));
1178 case 'C':
1179 return new Attribute.Constant(syms.charType, readPool(nextChar()));
1180 case 'D':
1181 return new Attribute.Constant(syms.doubleType, readPool(nextChar()));
1182 case 'F':
1183 return new Attribute.Constant(syms.floatType, readPool(nextChar()));
1184 case 'I':
1185 return new Attribute.Constant(syms.intType, readPool(nextChar()));
1186 case 'J':
1187 return new Attribute.Constant(syms.longType, readPool(nextChar()));
1188 case 'S':
1189 return new Attribute.Constant(syms.shortType, readPool(nextChar()));
1190 case 'Z':
1191 return new Attribute.Constant(syms.booleanType, readPool(nextChar()));
1192 case 's':
1193 return new Attribute.Constant(syms.stringType, readPool(nextChar()).toString());
1194 case 'e':
1195 return new EnumAttributeProxy(readEnumType(nextChar()), readName(nextChar()));
1196 case 'c':
1197 return new Attribute.Class(types, readTypeOrClassSymbol(nextChar()));
1198 case '[': {
1199 int n = nextChar();
1200 ListBuffer<Attribute> l = new ListBuffer<Attribute>();
1201 for (int i=0; i<n; i++)
1202 l.append(readAttributeValue());
1203 return new ArrayAttributeProxy(l.toList());
1204 }
1205 case '@':
1206 return readCompoundAnnotation();
1207 default:
1208 throw new AssertionError("unknown annotation tag '" + c + "'");
1209 }
1210 }
1212 interface ProxyVisitor extends Attribute.Visitor {
1213 void visitEnumAttributeProxy(EnumAttributeProxy proxy);
1214 void visitArrayAttributeProxy(ArrayAttributeProxy proxy);
1215 void visitCompoundAnnotationProxy(CompoundAnnotationProxy proxy);
1216 }
1218 static class EnumAttributeProxy extends Attribute {
1219 Type enumType;
1220 Name enumerator;
1221 public EnumAttributeProxy(Type enumType, Name enumerator) {
1222 super(null);
1223 this.enumType = enumType;
1224 this.enumerator = enumerator;
1225 }
1226 public void accept(Visitor v) { ((ProxyVisitor)v).visitEnumAttributeProxy(this); }
1227 public String toString() {
1228 return "/*proxy enum*/" + enumType + "." + enumerator;
1229 }
1230 }
1232 static class ArrayAttributeProxy extends Attribute {
1233 List<Attribute> values;
1234 ArrayAttributeProxy(List<Attribute> values) {
1235 super(null);
1236 this.values = values;
1237 }
1238 public void accept(Visitor v) { ((ProxyVisitor)v).visitArrayAttributeProxy(this); }
1239 public String toString() {
1240 return "{" + values + "}";
1241 }
1242 }
1244 /** A temporary proxy representing a compound attribute.
1245 */
1246 static class CompoundAnnotationProxy extends Attribute {
1247 final List<Pair<Name,Attribute>> values;
1248 public CompoundAnnotationProxy(Type type,
1249 List<Pair<Name,Attribute>> values) {
1250 super(type);
1251 this.values = values;
1252 }
1253 public void accept(Visitor v) { ((ProxyVisitor)v).visitCompoundAnnotationProxy(this); }
1254 public String toString() {
1255 StringBuffer buf = new StringBuffer();
1256 buf.append("@");
1257 buf.append(type.tsym.getQualifiedName());
1258 buf.append("/*proxy*/{");
1259 boolean first = true;
1260 for (List<Pair<Name,Attribute>> v = values;
1261 v.nonEmpty(); v = v.tail) {
1262 Pair<Name,Attribute> value = v.head;
1263 if (!first) buf.append(",");
1264 first = false;
1265 buf.append(value.fst);
1266 buf.append("=");
1267 buf.append(value.snd);
1268 }
1269 buf.append("}");
1270 return buf.toString();
1271 }
1272 }
1274 class AnnotationDeproxy implements ProxyVisitor {
1275 private ClassSymbol requestingOwner = currentOwner.kind == MTH
1276 ? currentOwner.enclClass() : (ClassSymbol)currentOwner;
1278 List<Attribute.Compound> deproxyCompoundList(List<CompoundAnnotationProxy> pl) {
1279 // also must fill in types!!!!
1280 ListBuffer<Attribute.Compound> buf =
1281 new ListBuffer<Attribute.Compound>();
1282 for (List<CompoundAnnotationProxy> l = pl; l.nonEmpty(); l=l.tail) {
1283 buf.append(deproxyCompound(l.head));
1284 }
1285 return buf.toList();
1286 }
1288 Attribute.Compound deproxyCompound(CompoundAnnotationProxy a) {
1289 ListBuffer<Pair<Symbol.MethodSymbol,Attribute>> buf =
1290 new ListBuffer<Pair<Symbol.MethodSymbol,Attribute>>();
1291 for (List<Pair<Name,Attribute>> l = a.values;
1292 l.nonEmpty();
1293 l = l.tail) {
1294 MethodSymbol meth = findAccessMethod(a.type, l.head.fst);
1295 buf.append(new Pair<Symbol.MethodSymbol,Attribute>
1296 (meth, deproxy(meth.type.getReturnType(), l.head.snd)));
1297 }
1298 return new Attribute.Compound(a.type, buf.toList());
1299 }
1301 MethodSymbol findAccessMethod(Type container, Name name) {
1302 CompletionFailure failure = null;
1303 try {
1304 for (Scope.Entry e = container.tsym.members().lookup(name);
1305 e.scope != null;
1306 e = e.next()) {
1307 Symbol sym = e.sym;
1308 if (sym.kind == MTH && sym.type.getParameterTypes().length() == 0)
1309 return (MethodSymbol) sym;
1310 }
1311 } catch (CompletionFailure ex) {
1312 failure = ex;
1313 }
1314 // The method wasn't found: emit a warning and recover
1315 JavaFileObject prevSource = log.useSource(requestingOwner.classfile);
1316 try {
1317 if (failure == null) {
1318 log.warning("annotation.method.not.found",
1319 container,
1320 name);
1321 } else {
1322 log.warning("annotation.method.not.found.reason",
1323 container,
1324 name,
1325 failure.getMessage());
1326 }
1327 } finally {
1328 log.useSource(prevSource);
1329 }
1330 // Construct a new method type and symbol. Use bottom
1331 // type (typeof null) as return type because this type is
1332 // a subtype of all reference types and can be converted
1333 // to primitive types by unboxing.
1334 MethodType mt = new MethodType(List.<Type>nil(),
1335 syms.botType,
1336 List.<Type>nil(),
1337 syms.methodClass);
1338 return new MethodSymbol(PUBLIC | ABSTRACT, name, mt, container.tsym);
1339 }
1341 Attribute result;
1342 Type type;
1343 Attribute deproxy(Type t, Attribute a) {
1344 Type oldType = type;
1345 try {
1346 type = t;
1347 a.accept(this);
1348 return result;
1349 } finally {
1350 type = oldType;
1351 }
1352 }
1354 // implement Attribute.Visitor below
1356 public void visitConstant(Attribute.Constant value) {
1357 // assert value.type == type;
1358 result = value;
1359 }
1361 public void visitClass(Attribute.Class clazz) {
1362 result = clazz;
1363 }
1365 public void visitEnum(Attribute.Enum e) {
1366 throw new AssertionError(); // shouldn't happen
1367 }
1369 public void visitCompound(Attribute.Compound compound) {
1370 throw new AssertionError(); // shouldn't happen
1371 }
1373 public void visitArray(Attribute.Array array) {
1374 throw new AssertionError(); // shouldn't happen
1375 }
1377 public void visitError(Attribute.Error e) {
1378 throw new AssertionError(); // shouldn't happen
1379 }
1381 public void visitEnumAttributeProxy(EnumAttributeProxy proxy) {
1382 // type.tsym.flatName() should == proxy.enumFlatName
1383 TypeSymbol enumTypeSym = proxy.enumType.tsym;
1384 VarSymbol enumerator = null;
1385 for (Scope.Entry e = enumTypeSym.members().lookup(proxy.enumerator);
1386 e.scope != null;
1387 e = e.next()) {
1388 if (e.sym.kind == VAR) {
1389 enumerator = (VarSymbol)e.sym;
1390 break;
1391 }
1392 }
1393 if (enumerator == null) {
1394 log.error("unknown.enum.constant",
1395 currentClassFile, enumTypeSym, proxy.enumerator);
1396 result = new Attribute.Error(enumTypeSym.type);
1397 } else {
1398 result = new Attribute.Enum(enumTypeSym.type, enumerator);
1399 }
1400 }
1402 public void visitArrayAttributeProxy(ArrayAttributeProxy proxy) {
1403 int length = proxy.values.length();
1404 Attribute[] ats = new Attribute[length];
1405 Type elemtype = types.elemtype(type);
1406 int i = 0;
1407 for (List<Attribute> p = proxy.values; p.nonEmpty(); p = p.tail) {
1408 ats[i++] = deproxy(elemtype, p.head);
1409 }
1410 result = new Attribute.Array(type, ats);
1411 }
1413 public void visitCompoundAnnotationProxy(CompoundAnnotationProxy proxy) {
1414 result = deproxyCompound(proxy);
1415 }
1416 }
1418 class AnnotationDefaultCompleter extends AnnotationDeproxy implements Annotate.Annotator {
1419 final MethodSymbol sym;
1420 final Attribute value;
1421 final JavaFileObject classFile = currentClassFile;
1422 public String toString() {
1423 return " ClassReader store default for " + sym.owner + "." + sym + " is " + value;
1424 }
1425 AnnotationDefaultCompleter(MethodSymbol sym, Attribute value) {
1426 this.sym = sym;
1427 this.value = value;
1428 }
1429 // implement Annotate.Annotator.enterAnnotation()
1430 public void enterAnnotation() {
1431 JavaFileObject previousClassFile = currentClassFile;
1432 try {
1433 currentClassFile = classFile;
1434 sym.defaultValue = deproxy(sym.type.getReturnType(), value);
1435 } finally {
1436 currentClassFile = previousClassFile;
1437 }
1438 }
1439 }
1441 class AnnotationCompleter extends AnnotationDeproxy implements Annotate.Annotator {
1442 final Symbol sym;
1443 final List<CompoundAnnotationProxy> l;
1444 final JavaFileObject classFile;
1445 public String toString() {
1446 return " ClassReader annotate " + sym.owner + "." + sym + " with " + l;
1447 }
1448 AnnotationCompleter(Symbol sym, List<CompoundAnnotationProxy> l) {
1449 this.sym = sym;
1450 this.l = l;
1451 this.classFile = currentClassFile;
1452 }
1453 // implement Annotate.Annotator.enterAnnotation()
1454 public void enterAnnotation() {
1455 JavaFileObject previousClassFile = currentClassFile;
1456 try {
1457 currentClassFile = classFile;
1458 List<Attribute.Compound> newList = deproxyCompoundList(l);
1459 sym.attributes_field = ((sym.attributes_field == null)
1460 ? newList
1461 : newList.prependList(sym.attributes_field));
1462 } finally {
1463 currentClassFile = previousClassFile;
1464 }
1465 }
1466 }
1469 /************************************************************************
1470 * Reading Symbols
1471 ***********************************************************************/
1473 /** Read a field.
1474 */
1475 VarSymbol readField() {
1476 long flags = adjustFieldFlags(nextChar());
1477 Name name = readName(nextChar());
1478 Type type = readType(nextChar());
1479 VarSymbol v = new VarSymbol(flags, name, type, currentOwner);
1480 readMemberAttrs(v);
1481 return v;
1482 }
1484 /** Read a method.
1485 */
1486 MethodSymbol readMethod() {
1487 long flags = adjustMethodFlags(nextChar());
1488 Name name = readName(nextChar());
1489 Type type = readType(nextChar());
1490 if (name == names.init && currentOwner.hasOuterInstance()) {
1491 // Sometimes anonymous classes don't have an outer
1492 // instance, however, there is no reliable way to tell so
1493 // we never strip this$n
1494 if (currentOwner.name.len != 0)
1495 type = new MethodType(type.getParameterTypes().tail,
1496 type.getReturnType(),
1497 type.getThrownTypes(),
1498 syms.methodClass);
1499 }
1500 MethodSymbol m = new MethodSymbol(flags, name, type, currentOwner);
1501 Symbol prevOwner = currentOwner;
1502 currentOwner = m;
1503 try {
1504 readMemberAttrs(m);
1505 } finally {
1506 currentOwner = prevOwner;
1507 }
1508 return m;
1509 }
1511 /** Skip a field or method
1512 */
1513 void skipMember() {
1514 bp = bp + 6;
1515 char ac = nextChar();
1516 for (int i = 0; i < ac; i++) {
1517 bp = bp + 2;
1518 int attrLen = nextInt();
1519 bp = bp + attrLen;
1520 }
1521 }
1523 /** Enter type variables of this classtype and all enclosing ones in
1524 * `typevars'.
1525 */
1526 protected void enterTypevars(Type t) {
1527 if (t.getEnclosingType() != null && t.getEnclosingType().tag == CLASS)
1528 enterTypevars(t.getEnclosingType());
1529 for (List<Type> xs = t.getTypeArguments(); xs.nonEmpty(); xs = xs.tail)
1530 typevars.enter(xs.head.tsym);
1531 }
1533 protected void enterTypevars(Symbol sym) {
1534 if (sym.owner.kind == MTH) {
1535 enterTypevars(sym.owner);
1536 enterTypevars(sym.owner.owner);
1537 }
1538 enterTypevars(sym.type);
1539 }
1541 /** Read contents of a given class symbol `c'. Both external and internal
1542 * versions of an inner class are read.
1543 */
1544 void readClass(ClassSymbol c) {
1545 ClassType ct = (ClassType)c.type;
1547 // allocate scope for members
1548 c.members_field = new Scope(c);
1550 // prepare type variable table
1551 typevars = typevars.dup(currentOwner);
1552 if (ct.getEnclosingType().tag == CLASS) enterTypevars(ct.getEnclosingType());
1554 // read flags, or skip if this is an inner class
1555 long flags = adjustClassFlags(nextChar());
1556 if (c.owner.kind == PCK) c.flags_field = flags;
1558 // read own class name and check that it matches
1559 ClassSymbol self = readClassSymbol(nextChar());
1560 if (c != self)
1561 throw badClassFile("class.file.wrong.class",
1562 self.flatname);
1564 // class attributes must be read before class
1565 // skip ahead to read class attributes
1566 int startbp = bp;
1567 nextChar();
1568 char interfaceCount = nextChar();
1569 bp += interfaceCount * 2;
1570 char fieldCount = nextChar();
1571 for (int i = 0; i < fieldCount; i++) skipMember();
1572 char methodCount = nextChar();
1573 for (int i = 0; i < methodCount; i++) skipMember();
1574 readClassAttrs(c);
1576 if (readAllOfClassFile) {
1577 for (int i = 1; i < poolObj.length; i++) readPool(i);
1578 c.pool = new Pool(poolObj.length, poolObj);
1579 }
1581 // reset and read rest of classinfo
1582 bp = startbp;
1583 int n = nextChar();
1584 if (ct.supertype_field == null)
1585 ct.supertype_field = (n == 0)
1586 ? Type.noType
1587 : readClassSymbol(n).erasure(types);
1588 n = nextChar();
1589 List<Type> is = List.nil();
1590 for (int i = 0; i < n; i++) {
1591 Type _inter = readClassSymbol(nextChar()).erasure(types);
1592 is = is.prepend(_inter);
1593 }
1594 if (ct.interfaces_field == null)
1595 ct.interfaces_field = is.reverse();
1597 if (fieldCount != nextChar()) assert false;
1598 for (int i = 0; i < fieldCount; i++) enterMember(c, readField());
1599 if (methodCount != nextChar()) assert false;
1600 for (int i = 0; i < methodCount; i++) enterMember(c, readMethod());
1602 typevars = typevars.leave();
1603 }
1605 /** Read inner class info. For each inner/outer pair allocate a
1606 * member class.
1607 */
1608 void readInnerClasses(ClassSymbol c) {
1609 int n = nextChar();
1610 for (int i = 0; i < n; i++) {
1611 nextChar(); // skip inner class symbol
1612 ClassSymbol outer = readClassSymbol(nextChar());
1613 Name name = readName(nextChar());
1614 if (name == null) name = names.empty;
1615 long flags = adjustClassFlags(nextChar());
1616 if (outer != null) { // we have a member class
1617 if (name == names.empty)
1618 name = names.one;
1619 ClassSymbol member = enterClass(name, outer);
1620 if ((flags & STATIC) == 0) {
1621 ((ClassType)member.type).setEnclosingType(outer.type);
1622 if (member.erasure_field != null)
1623 ((ClassType)member.erasure_field).setEnclosingType(types.erasure(outer.type));
1624 }
1625 if (c == outer) {
1626 member.flags_field = flags;
1627 enterMember(c, member);
1628 }
1629 }
1630 }
1631 }
1633 /** Read a class file.
1634 */
1635 private void readClassFile(ClassSymbol c) throws IOException {
1636 int magic = nextInt();
1637 if (magic != JAVA_MAGIC)
1638 throw badClassFile("illegal.start.of.class.file");
1640 int minorVersion = nextChar();
1641 int majorVersion = nextChar();
1642 int maxMajor = Target.MAX().majorVersion;
1643 int maxMinor = Target.MAX().minorVersion;
1644 if (majorVersion > maxMajor ||
1645 majorVersion * 1000 + minorVersion <
1646 Target.MIN().majorVersion * 1000 + Target.MIN().minorVersion)
1647 {
1648 if (majorVersion == (maxMajor + 1))
1649 log.warning("big.major.version",
1650 currentClassFile,
1651 majorVersion,
1652 maxMajor);
1653 else
1654 throw badClassFile("wrong.version",
1655 Integer.toString(majorVersion),
1656 Integer.toString(minorVersion),
1657 Integer.toString(maxMajor),
1658 Integer.toString(maxMinor));
1659 }
1660 else if (checkClassFile &&
1661 majorVersion == maxMajor &&
1662 minorVersion > maxMinor)
1663 {
1664 printCCF("found.later.version",
1665 Integer.toString(minorVersion));
1666 }
1667 indexPool();
1668 if (signatureBuffer.length < bp) {
1669 int ns = Integer.highestOneBit(bp) << 1;
1670 signatureBuffer = new byte[ns];
1671 }
1672 readClass(c);
1673 }
1675 /************************************************************************
1676 * Adjusting flags
1677 ***********************************************************************/
1679 long adjustFieldFlags(long flags) {
1680 return flags;
1681 }
1682 long adjustMethodFlags(long flags) {
1683 if ((flags & ACC_BRIDGE) != 0) {
1684 flags &= ~ACC_BRIDGE;
1685 flags |= BRIDGE;
1686 if (!allowGenerics)
1687 flags &= ~SYNTHETIC;
1688 }
1689 if ((flags & ACC_VARARGS) != 0) {
1690 flags &= ~ACC_VARARGS;
1691 flags |= VARARGS;
1692 }
1693 return flags;
1694 }
1695 long adjustClassFlags(long flags) {
1696 return flags & ~ACC_SUPER; // SUPER and SYNCHRONIZED bits overloaded
1697 }
1699 /************************************************************************
1700 * Loading Classes
1701 ***********************************************************************/
1703 /** Define a new class given its name and owner.
1704 */
1705 public ClassSymbol defineClass(Name name, Symbol owner) {
1706 ClassSymbol c = new ClassSymbol(0, name, owner);
1707 if (owner.kind == PCK)
1708 assert classes.get(c.flatname) == null : c;
1709 c.completer = this;
1710 return c;
1711 }
1713 /** Create a new toplevel or member class symbol with given name
1714 * and owner and enter in `classes' unless already there.
1715 */
1716 public ClassSymbol enterClass(Name name, TypeSymbol owner) {
1717 Name flatname = TypeSymbol.formFlatName(name, owner);
1718 ClassSymbol c = classes.get(flatname);
1719 if (c == null) {
1720 c = defineClass(name, owner);
1721 classes.put(flatname, c);
1722 } else if ((c.name != name || c.owner != owner) && owner.kind == TYP && c.owner.kind == PCK) {
1723 // reassign fields of classes that might have been loaded with
1724 // their flat names.
1725 c.owner.members().remove(c);
1726 c.name = name;
1727 c.owner = owner;
1728 c.fullname = ClassSymbol.formFullName(name, owner);
1729 }
1730 return c;
1731 }
1733 /**
1734 * Creates a new toplevel class symbol with given flat name and
1735 * given class (or source) file.
1736 *
1737 * @param flatName a fully qualified binary class name
1738 * @param classFile the class file or compilation unit defining
1739 * the class (may be {@code null})
1740 * @return a newly created class symbol
1741 * @throws AssertionError if the class symbol already exists
1742 */
1743 public ClassSymbol enterClass(Name flatName, JavaFileObject classFile) {
1744 ClassSymbol cs = classes.get(flatName);
1745 if (cs != null) {
1746 String msg = Log.format("%s: completer = %s; class file = %s; source file = %s",
1747 cs.fullname,
1748 cs.completer,
1749 cs.classfile,
1750 cs.sourcefile);
1751 throw new AssertionError(msg);
1752 }
1753 Name packageName = Convert.packagePart(flatName);
1754 PackageSymbol owner = packageName.isEmpty()
1755 ? syms.unnamedPackage
1756 : enterPackage(packageName);
1757 cs = defineClass(Convert.shortName(flatName), owner);
1758 cs.classfile = classFile;
1759 classes.put(flatName, cs);
1760 return cs;
1761 }
1763 /** Create a new member or toplevel class symbol with given flat name
1764 * and enter in `classes' unless already there.
1765 */
1766 public ClassSymbol enterClass(Name flatname) {
1767 ClassSymbol c = classes.get(flatname);
1768 if (c == null)
1769 return enterClass(flatname, (JavaFileObject)null);
1770 else
1771 return c;
1772 }
1774 private boolean suppressFlush = false;
1776 /** Completion for classes to be loaded. Before a class is loaded
1777 * we make sure its enclosing class (if any) is loaded.
1778 */
1779 public void complete(Symbol sym) throws CompletionFailure {
1780 if (sym.kind == TYP) {
1781 ClassSymbol c = (ClassSymbol)sym;
1782 c.members_field = new Scope.ErrorScope(c); // make sure it's always defined
1783 boolean suppressFlush = this.suppressFlush;
1784 this.suppressFlush = true;
1785 try {
1786 completeOwners(c.owner);
1787 completeEnclosing(c);
1788 } finally {
1789 this.suppressFlush = suppressFlush;
1790 }
1791 fillIn(c);
1792 } else if (sym.kind == PCK) {
1793 PackageSymbol p = (PackageSymbol)sym;
1794 try {
1795 fillIn(p);
1796 } catch (IOException ex) {
1797 throw new CompletionFailure(sym, ex.getLocalizedMessage()).initCause(ex);
1798 }
1799 }
1800 if (!filling && !suppressFlush)
1801 annotate.flush(); // finish attaching annotations
1802 }
1804 /** complete up through the enclosing package. */
1805 private void completeOwners(Symbol o) {
1806 if (o.kind != PCK) completeOwners(o.owner);
1807 o.complete();
1808 }
1810 /**
1811 * Tries to complete lexically enclosing classes if c looks like a
1812 * nested class. This is similar to completeOwners but handles
1813 * the situation when a nested class is accessed directly as it is
1814 * possible with the Tree API or javax.lang.model.*.
1815 */
1816 private void completeEnclosing(ClassSymbol c) {
1817 if (c.owner.kind == PCK) {
1818 Symbol owner = c.owner;
1819 for (Name name : Convert.enclosingCandidates(Convert.shortName(c.name))) {
1820 Symbol encl = owner.members().lookup(name).sym;
1821 if (encl == null)
1822 encl = classes.get(TypeSymbol.formFlatName(name, owner));
1823 if (encl != null)
1824 encl.complete();
1825 }
1826 }
1827 }
1829 /** We can only read a single class file at a time; this
1830 * flag keeps track of when we are currently reading a class
1831 * file.
1832 */
1833 private boolean filling = false;
1835 /** Fill in definition of class `c' from corresponding class or
1836 * source file.
1837 */
1838 private void fillIn(ClassSymbol c) {
1839 if (completionFailureName == c.fullname) {
1840 throw new CompletionFailure(c, "user-selected completion failure by class name");
1841 }
1842 currentOwner = c;
1843 JavaFileObject classfile = c.classfile;
1844 if (classfile != null) {
1845 JavaFileObject previousClassFile = currentClassFile;
1846 try {
1847 assert !filling :
1848 "Filling " + classfile.toUri() +
1849 " during " + previousClassFile;
1850 currentClassFile = classfile;
1851 if (verbose) {
1852 printVerbose("loading", currentClassFile.toString());
1853 }
1854 if (classfile.getKind() == JavaFileObject.Kind.CLASS) {
1855 filling = true;
1856 try {
1857 bp = 0;
1858 buf = readInputStream(buf, classfile.openInputStream());
1859 readClassFile(c);
1860 if (!missingTypeVariables.isEmpty() && !foundTypeVariables.isEmpty()) {
1861 List<Type> missing = missingTypeVariables;
1862 List<Type> found = foundTypeVariables;
1863 missingTypeVariables = List.nil();
1864 foundTypeVariables = List.nil();
1865 filling = false;
1866 ClassType ct = (ClassType)currentOwner.type;
1867 ct.supertype_field =
1868 types.subst(ct.supertype_field, missing, found);
1869 ct.interfaces_field =
1870 types.subst(ct.interfaces_field, missing, found);
1871 } else if (missingTypeVariables.isEmpty() !=
1872 foundTypeVariables.isEmpty()) {
1873 Name name = missingTypeVariables.head.tsym.name;
1874 throw badClassFile("undecl.type.var", name);
1875 }
1876 } finally {
1877 missingTypeVariables = List.nil();
1878 foundTypeVariables = List.nil();
1879 filling = false;
1880 }
1881 } else {
1882 if (sourceCompleter != null) {
1883 sourceCompleter.complete(c);
1884 } else {
1885 throw new IllegalStateException("Source completer required to read "
1886 + classfile.toUri());
1887 }
1888 }
1889 return;
1890 } catch (IOException ex) {
1891 throw badClassFile("unable.to.access.file", ex.getMessage());
1892 } finally {
1893 currentClassFile = previousClassFile;
1894 }
1895 } else {
1896 throw
1897 newCompletionFailure(c,
1898 Log.getLocalizedString("class.file.not.found",
1899 c.flatname));
1900 }
1901 }
1902 // where
1903 private static byte[] readInputStream(byte[] buf, InputStream s) throws IOException {
1904 try {
1905 buf = ensureCapacity(buf, s.available());
1906 int r = s.read(buf);
1907 int bp = 0;
1908 while (r != -1) {
1909 bp += r;
1910 buf = ensureCapacity(buf, bp);
1911 r = s.read(buf, bp, buf.length - bp);
1912 }
1913 return buf;
1914 } finally {
1915 try {
1916 s.close();
1917 } catch (IOException e) {
1918 /* Ignore any errors, as this stream may have already
1919 * thrown a related exception which is the one that
1920 * should be reported.
1921 */
1922 }
1923 }
1924 }
1925 private static byte[] ensureCapacity(byte[] buf, int needed) {
1926 if (buf.length < needed) {
1927 byte[] old = buf;
1928 buf = new byte[Integer.highestOneBit(needed) << 1];
1929 System.arraycopy(old, 0, buf, 0, old.length);
1930 }
1931 return buf;
1932 }
1933 /** Static factory for CompletionFailure objects.
1934 * In practice, only one can be used at a time, so we share one
1935 * to reduce the expense of allocating new exception objects.
1936 */
1937 private CompletionFailure newCompletionFailure(ClassSymbol c,
1938 String localized) {
1939 if (!cacheCompletionFailure) {
1940 // log.warning("proc.messager",
1941 // Log.getLocalizedString("class.file.not.found", c.flatname));
1942 // c.debug.printStackTrace();
1943 return new CompletionFailure(c, localized);
1944 } else {
1945 CompletionFailure result = cachedCompletionFailure;
1946 result.sym = c;
1947 result.errmsg = localized;
1948 return result;
1949 }
1950 }
1951 private CompletionFailure cachedCompletionFailure =
1952 new CompletionFailure(null, null);
1953 {
1954 cachedCompletionFailure.setStackTrace(new StackTraceElement[0]);
1955 }
1957 /** Load a toplevel class with given fully qualified name
1958 * The class is entered into `classes' only if load was successful.
1959 */
1960 public ClassSymbol loadClass(Name flatname) throws CompletionFailure {
1961 boolean absent = classes.get(flatname) == null;
1962 ClassSymbol c = enterClass(flatname);
1963 if (c.members_field == null && c.completer != null) {
1964 try {
1965 c.complete();
1966 } catch (CompletionFailure ex) {
1967 if (absent) classes.remove(flatname);
1968 throw ex;
1969 }
1970 }
1971 return c;
1972 }
1974 /************************************************************************
1975 * Loading Packages
1976 ***********************************************************************/
1978 /** Check to see if a package exists, given its fully qualified name.
1979 */
1980 public boolean packageExists(Name fullname) {
1981 return enterPackage(fullname).exists();
1982 }
1984 /** Make a package, given its fully qualified name.
1985 */
1986 public PackageSymbol enterPackage(Name fullname) {
1987 PackageSymbol p = packages.get(fullname);
1988 if (p == null) {
1989 assert !fullname.isEmpty() : "rootPackage missing!";
1990 p = new PackageSymbol(
1991 Convert.shortName(fullname),
1992 enterPackage(Convert.packagePart(fullname)));
1993 p.completer = this;
1994 packages.put(fullname, p);
1995 }
1996 return p;
1997 }
1999 /** Make a package, given its unqualified name and enclosing package.
2000 */
2001 public PackageSymbol enterPackage(Name name, PackageSymbol owner) {
2002 return enterPackage(TypeSymbol.formFullName(name, owner));
2003 }
2005 /** Include class corresponding to given class file in package,
2006 * unless (1) we already have one the same kind (.class or .java), or
2007 * (2) we have one of the other kind, and the given class file
2008 * is older.
2009 */
2010 protected void includeClassFile(PackageSymbol p, JavaFileObject file) {
2011 if ((p.flags_field & EXISTS) == 0)
2012 for (Symbol q = p; q != null && q.kind == PCK; q = q.owner)
2013 q.flags_field |= EXISTS;
2014 JavaFileObject.Kind kind = file.getKind();
2015 int seen;
2016 if (kind == JavaFileObject.Kind.CLASS)
2017 seen = CLASS_SEEN;
2018 else
2019 seen = SOURCE_SEEN;
2020 String binaryName = fileManager.inferBinaryName(currentLoc, file);
2021 int lastDot = binaryName.lastIndexOf(".");
2022 Name classname = names.fromString(binaryName.substring(lastDot + 1));
2023 boolean isPkgInfo = classname == names.package_info;
2024 ClassSymbol c = isPkgInfo
2025 ? p.package_info
2026 : (ClassSymbol) p.members_field.lookup(classname).sym;
2027 if (c == null) {
2028 c = enterClass(classname, p);
2029 if (c.classfile == null) // only update the file if's it's newly created
2030 c.classfile = file;
2031 if (isPkgInfo) {
2032 p.package_info = c;
2033 } else {
2034 if (c.owner == p) // it might be an inner class
2035 p.members_field.enter(c);
2036 }
2037 } else if (c.classfile != null && (c.flags_field & seen) == 0) {
2038 // if c.classfile == null, we are currently compiling this class
2039 // and no further action is necessary.
2040 // if (c.flags_field & seen) != 0, we have already encountered
2041 // a file of the same kind; again no further action is necessary.
2042 if ((c.flags_field & (CLASS_SEEN | SOURCE_SEEN)) != 0)
2043 c.classfile = preferredFileObject(file, c.classfile);
2044 }
2045 c.flags_field |= seen;
2046 }
2048 /** Implement policy to choose to derive information from a source
2049 * file or a class file when both are present. May be overridden
2050 * by subclasses.
2051 */
2052 protected JavaFileObject preferredFileObject(JavaFileObject a,
2053 JavaFileObject b) {
2055 if (preferSource)
2056 return (a.getKind() == JavaFileObject.Kind.SOURCE) ? a : b;
2057 else {
2058 long adate = a.getLastModified();
2059 long bdate = b.getLastModified();
2060 // 6449326: policy for bad lastModifiedTime in ClassReader
2061 //assert adate >= 0 && bdate >= 0;
2062 return (adate > bdate) ? a : b;
2063 }
2064 }
2066 /**
2067 * specifies types of files to be read when filling in a package symbol
2068 */
2069 protected EnumSet<JavaFileObject.Kind> getPackageFileKinds() {
2070 return EnumSet.of(JavaFileObject.Kind.CLASS, JavaFileObject.Kind.SOURCE);
2071 }
2073 /**
2074 * this is used to support javadoc
2075 */
2076 protected void extraFileActions(PackageSymbol pack, JavaFileObject fe) {
2077 }
2079 protected Location currentLoc; // FIXME
2081 private boolean verbosePath = true;
2083 /** Load directory of package into members scope.
2084 */
2085 private void fillIn(PackageSymbol p) throws IOException {
2086 if (p.members_field == null) p.members_field = new Scope(p);
2087 String packageName = p.fullname.toString();
2089 Set<JavaFileObject.Kind> kinds = getPackageFileKinds();
2091 fillIn(p, PLATFORM_CLASS_PATH,
2092 fileManager.list(PLATFORM_CLASS_PATH,
2093 packageName,
2094 EnumSet.of(JavaFileObject.Kind.CLASS),
2095 false));
2097 Set<JavaFileObject.Kind> classKinds = EnumSet.copyOf(kinds);
2098 classKinds.remove(JavaFileObject.Kind.SOURCE);
2099 boolean wantClassFiles = !classKinds.isEmpty();
2101 Set<JavaFileObject.Kind> sourceKinds = EnumSet.copyOf(kinds);
2102 sourceKinds.remove(JavaFileObject.Kind.CLASS);
2103 boolean wantSourceFiles = !sourceKinds.isEmpty();
2105 boolean haveSourcePath = fileManager.hasLocation(SOURCE_PATH);
2107 if (verbose && verbosePath) {
2108 if (fileManager instanceof StandardJavaFileManager) {
2109 StandardJavaFileManager fm = (StandardJavaFileManager)fileManager;
2110 if (haveSourcePath && wantSourceFiles) {
2111 List<File> path = List.nil();
2112 for (File file : fm.getLocation(SOURCE_PATH)) {
2113 path = path.prepend(file);
2114 }
2115 printVerbose("sourcepath", path.reverse().toString());
2116 } else if (wantSourceFiles) {
2117 List<File> path = List.nil();
2118 for (File file : fm.getLocation(CLASS_PATH)) {
2119 path = path.prepend(file);
2120 }
2121 printVerbose("sourcepath", path.reverse().toString());
2122 }
2123 if (wantClassFiles) {
2124 List<File> path = List.nil();
2125 for (File file : fm.getLocation(PLATFORM_CLASS_PATH)) {
2126 path = path.prepend(file);
2127 }
2128 for (File file : fm.getLocation(CLASS_PATH)) {
2129 path = path.prepend(file);
2130 }
2131 printVerbose("classpath", path.reverse().toString());
2132 }
2133 }
2134 }
2136 if (wantSourceFiles && !haveSourcePath) {
2137 fillIn(p, CLASS_PATH,
2138 fileManager.list(CLASS_PATH,
2139 packageName,
2140 kinds,
2141 false));
2142 } else {
2143 if (wantClassFiles)
2144 fillIn(p, CLASS_PATH,
2145 fileManager.list(CLASS_PATH,
2146 packageName,
2147 classKinds,
2148 false));
2149 if (wantSourceFiles)
2150 fillIn(p, SOURCE_PATH,
2151 fileManager.list(SOURCE_PATH,
2152 packageName,
2153 sourceKinds,
2154 false));
2155 }
2156 verbosePath = false;
2157 }
2158 // where
2159 private void fillIn(PackageSymbol p,
2160 Location location,
2161 Iterable<JavaFileObject> files)
2162 {
2163 currentLoc = location;
2164 for (JavaFileObject fo : files) {
2165 switch (fo.getKind()) {
2166 case CLASS:
2167 case SOURCE: {
2168 // TODO pass binaryName to includeClassFile
2169 String binaryName = fileManager.inferBinaryName(currentLoc, fo);
2170 String simpleName = binaryName.substring(binaryName.lastIndexOf(".") + 1);
2171 if (SourceVersion.isIdentifier(simpleName) ||
2172 simpleName.equals("package-info"))
2173 includeClassFile(p, fo);
2174 break;
2175 }
2176 default:
2177 extraFileActions(p, fo);
2178 }
2179 }
2180 }
2182 /** Output for "-verbose" option.
2183 * @param key The key to look up the correct internationalized string.
2184 * @param arg An argument for substitution into the output string.
2185 */
2186 private void printVerbose(String key, CharSequence arg) {
2187 Log.printLines(log.noticeWriter, Log.getLocalizedString("verbose." + key, arg));
2188 }
2190 /** Output for "-checkclassfile" option.
2191 * @param key The key to look up the correct internationalized string.
2192 * @param arg An argument for substitution into the output string.
2193 */
2194 private void printCCF(String key, Object arg) {
2195 Log.printLines(log.noticeWriter, Log.getLocalizedString(key, arg));
2196 }
2199 public interface SourceCompleter {
2200 void complete(ClassSymbol sym)
2201 throws CompletionFailure;
2202 }
2204 /**
2205 * A subclass of JavaFileObject for the sourcefile attribute found in a classfile.
2206 * The attribute is only the last component of the original filename, so is unlikely
2207 * to be valid as is, so operations other than those to access the name throw
2208 * UnsupportedOperationException
2209 */
2210 private static class SourceFileObject extends BaseFileObject {
2212 /** The file's name.
2213 */
2214 private Name name;
2216 public SourceFileObject(Name name) {
2217 this.name = name;
2218 }
2220 public InputStream openInputStream() {
2221 throw new UnsupportedOperationException();
2222 }
2224 public OutputStream openOutputStream() {
2225 throw new UnsupportedOperationException();
2226 }
2228 public Reader openReader() {
2229 throw new UnsupportedOperationException();
2230 }
2232 public Writer openWriter() {
2233 throw new UnsupportedOperationException();
2234 }
2236 /** @deprecated see bug 6410637 */
2237 @Deprecated
2238 public String getName() {
2239 return name.toString();
2240 }
2242 public long getLastModified() {
2243 throw new UnsupportedOperationException();
2244 }
2246 public boolean delete() {
2247 throw new UnsupportedOperationException();
2248 }
2250 public CharBuffer getCharContent(boolean ignoreEncodingErrors) {
2251 throw new UnsupportedOperationException();
2252 }
2254 @Override
2255 public boolean equals(Object other) {
2256 if (!(other instanceof SourceFileObject))
2257 return false;
2258 SourceFileObject o = (SourceFileObject) other;
2259 return name.equals(o.name);
2260 }
2262 @Override
2263 public int hashCode() {
2264 return name.hashCode();
2265 }
2267 public boolean isNameCompatible(String simpleName, JavaFileObject.Kind kind) {
2268 return true; // fail-safe mode
2269 }
2271 public URI toUri() {
2272 return URI.create(name.toString());
2273 }
2275 public Reader openReader(boolean ignoreEncodingErrors) throws IOException {
2276 throw new UnsupportedOperationException();
2277 }
2279 }
2280 }
