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src/share/classes/com/sun/tools/javac/jvm/ClassReader.java@ca5783d9a597
src/share/classes/com/sun/tools/javac/jvm/ClassReader.java
Mon, 16 Oct 2017 16:07:48 +0800
- author
- aoqi
- date
- Mon, 16 Oct 2017 16:07:48 +0800
- changeset 2893
- ca5783d9a597
- parent 2707
- 63a9b573847d
- parent 2525
- 2eb010b6cb22
- permissions
- -rw-r--r--
merge
1 /*
2 * Copyright (c) 1999, 2015, 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 */
26 package com.sun.tools.javac.jvm;
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 import javax.lang.model.SourceVersion;
39 import javax.tools.JavaFileObject;
40 import javax.tools.JavaFileManager;
41 import javax.tools.JavaFileManager.Location;
42 import javax.tools.StandardJavaFileManager;
44 import static javax.tools.StandardLocation.*;
46 import com.sun.tools.javac.comp.Annotate;
47 import com.sun.tools.javac.code.*;
48 import com.sun.tools.javac.code.Lint.LintCategory;
49 import com.sun.tools.javac.code.Type.*;
50 import com.sun.tools.javac.code.Symbol.*;
51 import com.sun.tools.javac.code.Symtab;
52 import com.sun.tools.javac.file.BaseFileObject;
53 import com.sun.tools.javac.util.*;
54 import com.sun.tools.javac.util.JCDiagnostic.DiagnosticPosition;
56 import static com.sun.tools.javac.code.Flags.*;
57 import static com.sun.tools.javac.code.Kinds.*;
58 import static com.sun.tools.javac.code.TypeTag.CLASS;
59 import static com.sun.tools.javac.code.TypeTag.TYPEVAR;
60 import static com.sun.tools.javac.jvm.ClassFile.*;
61 import static com.sun.tools.javac.jvm.ClassFile.Version.*;
63 import static com.sun.tools.javac.main.Option.*;
65 /** This class provides operations to read a classfile into an internal
66 * representation. The internal representation is anchored in a
67 * ClassSymbol which contains in its scope symbol representations
68 * for all other definitions in the classfile. Top-level Classes themselves
69 * appear as members of the scopes of PackageSymbols.
70 *
71 * <p><b>This is NOT part of any supported API.
72 * If you write code that depends on this, you do so at your own risk.
73 * This code and its internal interfaces are subject to change or
74 * deletion without notice.</b>
75 */
76 public class ClassReader {
77 /** The context key for the class reader. */
78 protected static final Context.Key<ClassReader> classReaderKey =
79 new Context.Key<ClassReader>();
81 public static final int INITIAL_BUFFER_SIZE = 0x0fff0;
83 Annotate annotate;
85 /** Switch: verbose output.
86 */
87 boolean verbose;
89 /** Switch: check class file for correct minor version, unrecognized
90 * attributes.
91 */
92 boolean checkClassFile;
94 /** Switch: read constant pool and code sections. This switch is initially
95 * set to false but can be turned on from outside.
96 */
97 public boolean readAllOfClassFile = false;
99 /** Switch: read GJ signature information.
100 */
101 boolean allowGenerics;
103 /** Switch: read varargs attribute.
104 */
105 boolean allowVarargs;
107 /** Switch: allow annotations.
108 */
109 boolean allowAnnotations;
111 /** Switch: allow simplified varargs.
112 */
113 boolean allowSimplifiedVarargs;
115 /** Lint option: warn about classfile issues
116 */
117 boolean lintClassfile;
119 /** Switch: preserve parameter names from the variable table.
120 */
121 public boolean saveParameterNames;
123 /**
124 * Switch: cache completion failures unless -XDdev is used
125 */
126 private boolean cacheCompletionFailure;
128 /**
129 * Switch: prefer source files instead of newer when both source
130 * and class are available
131 **/
132 public boolean preferSource;
134 /**
135 * The currently selected profile.
136 */
137 public final Profile profile;
139 /** The log to use for verbose output
140 */
141 final Log log;
143 /** The symbol table. */
144 Symtab syms;
146 Types types;
148 /** The name table. */
149 final Names names;
151 /** Force a completion failure on this name
152 */
153 final Name completionFailureName;
155 /** Access to files
156 */
157 private final JavaFileManager fileManager;
159 /** Factory for diagnostics
160 */
161 JCDiagnostic.Factory diagFactory;
163 /** Can be reassigned from outside:
164 * the completer to be used for ".java" files. If this remains unassigned
165 * ".java" files will not be loaded.
166 */
167 public SourceCompleter sourceCompleter = null;
169 /** A hashtable containing the encountered top-level and member classes,
170 * indexed by flat names. The table does not contain local classes.
171 */
172 private Map<Name,ClassSymbol> classes;
174 /** A hashtable containing the encountered packages.
175 */
176 private Map<Name, PackageSymbol> packages;
178 /** The current scope where type variables are entered.
179 */
180 protected Scope typevars;
182 /** The path name of the class file currently being read.
183 */
184 protected JavaFileObject currentClassFile = null;
186 /** The class or method currently being read.
187 */
188 protected Symbol currentOwner = null;
190 /** The buffer containing the currently read class file.
191 */
192 byte[] buf = new byte[INITIAL_BUFFER_SIZE];
194 /** The current input pointer.
195 */
196 protected int bp;
198 /** The objects of the constant pool.
199 */
200 Object[] poolObj;
202 /** For every constant pool entry, an index into buf where the
203 * defining section of the entry is found.
204 */
205 int[] poolIdx;
207 /** The major version number of the class file being read. */
208 int majorVersion;
209 /** The minor version number of the class file being read. */
210 int minorVersion;
212 /** A table to hold the constant pool indices for method parameter
213 * names, as given in LocalVariableTable attributes.
214 */
215 int[] parameterNameIndices;
217 /**
218 * Whether or not any parameter names have been found.
219 */
220 boolean haveParameterNameIndices;
222 /** Set this to false every time we start reading a method
223 * and are saving parameter names. Set it to true when we see
224 * MethodParameters, if it's set when we see a LocalVariableTable,
225 * then we ignore the parameter names from the LVT.
226 */
227 boolean sawMethodParameters;
229 /**
230 * The set of attribute names for which warnings have been generated for the current class
231 */
232 Set<Name> warnedAttrs = new HashSet<Name>();
234 /**
235 * Completer that delegates to the complete-method of this class.
236 */
237 private final Completer thisCompleter = new Completer() {
238 @Override
239 public void complete(Symbol sym) throws CompletionFailure {
240 ClassReader.this.complete(sym);
241 }
242 };
245 /** Get the ClassReader instance for this invocation. */
246 public static ClassReader instance(Context context) {
247 ClassReader instance = context.get(classReaderKey);
248 if (instance == null)
249 instance = new ClassReader(context, true);
250 return instance;
251 }
253 /** Initialize classes and packages, treating this as the definitive classreader. */
254 public void init(Symtab syms) {
255 init(syms, true);
256 }
258 /** Initialize classes and packages, optionally treating this as
259 * the definitive classreader.
260 */
261 private void init(Symtab syms, boolean definitive) {
262 if (classes != null) return;
264 if (definitive) {
265 Assert.check(packages == null || packages == syms.packages);
266 packages = syms.packages;
267 Assert.check(classes == null || classes == syms.classes);
268 classes = syms.classes;
269 } else {
270 packages = new HashMap<Name, PackageSymbol>();
271 classes = new HashMap<Name, ClassSymbol>();
272 }
274 packages.put(names.empty, syms.rootPackage);
275 syms.rootPackage.completer = thisCompleter;
276 syms.unnamedPackage.completer = thisCompleter;
277 }
279 /** Construct a new class reader, optionally treated as the
280 * definitive classreader for this invocation.
281 */
282 protected ClassReader(Context context, boolean definitive) {
283 if (definitive) context.put(classReaderKey, this);
285 names = Names.instance(context);
286 syms = Symtab.instance(context);
287 types = Types.instance(context);
288 fileManager = context.get(JavaFileManager.class);
289 if (fileManager == null)
290 throw new AssertionError("FileManager initialization error");
291 diagFactory = JCDiagnostic.Factory.instance(context);
293 init(syms, definitive);
294 log = Log.instance(context);
296 Options options = Options.instance(context);
297 annotate = Annotate.instance(context);
298 verbose = options.isSet(VERBOSE);
299 checkClassFile = options.isSet("-checkclassfile");
301 Source source = Source.instance(context);
302 allowGenerics = source.allowGenerics();
303 allowVarargs = source.allowVarargs();
304 allowAnnotations = source.allowAnnotations();
305 allowSimplifiedVarargs = source.allowSimplifiedVarargs();
307 saveParameterNames = options.isSet("save-parameter-names");
308 cacheCompletionFailure = options.isUnset("dev");
309 preferSource = "source".equals(options.get("-Xprefer"));
311 profile = Profile.instance(context);
313 completionFailureName =
314 options.isSet("failcomplete")
315 ? names.fromString(options.get("failcomplete"))
316 : null;
318 typevars = new Scope(syms.noSymbol);
320 lintClassfile = Lint.instance(context).isEnabled(LintCategory.CLASSFILE);
322 initAttributeReaders();
323 }
325 /** Add member to class unless it is synthetic.
326 */
327 private void enterMember(ClassSymbol c, Symbol sym) {
328 // Synthetic members are not entered -- reason lost to history (optimization?).
329 // Lambda methods must be entered because they may have inner classes (which reference them)
330 if ((sym.flags_field & (SYNTHETIC|BRIDGE)) != SYNTHETIC || sym.name.startsWith(names.lambda))
331 c.members_field.enter(sym);
332 }
334 /************************************************************************
335 * Error Diagnoses
336 ***********************************************************************/
339 public class BadClassFile extends CompletionFailure {
340 private static final long serialVersionUID = 0;
342 public BadClassFile(TypeSymbol sym, JavaFileObject file, JCDiagnostic diag) {
343 super(sym, createBadClassFileDiagnostic(file, diag));
344 }
345 }
346 // where
347 private JCDiagnostic createBadClassFileDiagnostic(JavaFileObject file, JCDiagnostic diag) {
348 String key = (file.getKind() == JavaFileObject.Kind.SOURCE
349 ? "bad.source.file.header" : "bad.class.file.header");
350 return diagFactory.fragment(key, file, diag);
351 }
353 public BadClassFile badClassFile(String key, Object... args) {
354 return new BadClassFile (
355 currentOwner.enclClass(),
356 currentClassFile,
357 diagFactory.fragment(key, args));
358 }
360 /************************************************************************
361 * Buffer Access
362 ***********************************************************************/
364 /** Read a character.
365 */
366 char nextChar() {
367 return (char)(((buf[bp++] & 0xFF) << 8) + (buf[bp++] & 0xFF));
368 }
370 /** Read a byte.
371 */
372 int nextByte() {
373 return buf[bp++] & 0xFF;
374 }
376 /** Read an integer.
377 */
378 int nextInt() {
379 return
380 ((buf[bp++] & 0xFF) << 24) +
381 ((buf[bp++] & 0xFF) << 16) +
382 ((buf[bp++] & 0xFF) << 8) +
383 (buf[bp++] & 0xFF);
384 }
386 /** Extract a character at position bp from buf.
387 */
388 char getChar(int bp) {
389 return
390 (char)(((buf[bp] & 0xFF) << 8) + (buf[bp+1] & 0xFF));
391 }
393 /** Extract an integer at position bp from buf.
394 */
395 int getInt(int bp) {
396 return
397 ((buf[bp] & 0xFF) << 24) +
398 ((buf[bp+1] & 0xFF) << 16) +
399 ((buf[bp+2] & 0xFF) << 8) +
400 (buf[bp+3] & 0xFF);
401 }
404 /** Extract a long integer at position bp from buf.
405 */
406 long getLong(int bp) {
407 DataInputStream bufin =
408 new DataInputStream(new ByteArrayInputStream(buf, bp, 8));
409 try {
410 return bufin.readLong();
411 } catch (IOException e) {
412 throw new AssertionError(e);
413 }
414 }
416 /** Extract a float at position bp from buf.
417 */
418 float getFloat(int bp) {
419 DataInputStream bufin =
420 new DataInputStream(new ByteArrayInputStream(buf, bp, 4));
421 try {
422 return bufin.readFloat();
423 } catch (IOException e) {
424 throw new AssertionError(e);
425 }
426 }
428 /** Extract a double at position bp from buf.
429 */
430 double getDouble(int bp) {
431 DataInputStream bufin =
432 new DataInputStream(new ByteArrayInputStream(buf, bp, 8));
433 try {
434 return bufin.readDouble();
435 } catch (IOException e) {
436 throw new AssertionError(e);
437 }
438 }
440 /************************************************************************
441 * Constant Pool Access
442 ***********************************************************************/
444 /** Index all constant pool entries, writing their start addresses into
445 * poolIdx.
446 */
447 void indexPool() {
448 poolIdx = new int[nextChar()];
449 poolObj = new Object[poolIdx.length];
450 int i = 1;
451 while (i < poolIdx.length) {
452 poolIdx[i++] = bp;
453 byte tag = buf[bp++];
454 switch (tag) {
455 case CONSTANT_Utf8: case CONSTANT_Unicode: {
456 int len = nextChar();
457 bp = bp + len;
458 break;
459 }
460 case CONSTANT_Class:
461 case CONSTANT_String:
462 case CONSTANT_MethodType:
463 bp = bp + 2;
464 break;
465 case CONSTANT_MethodHandle:
466 bp = bp + 3;
467 break;
468 case CONSTANT_Fieldref:
469 case CONSTANT_Methodref:
470 case CONSTANT_InterfaceMethodref:
471 case CONSTANT_NameandType:
472 case CONSTANT_Integer:
473 case CONSTANT_Float:
474 case CONSTANT_InvokeDynamic:
475 bp = bp + 4;
476 break;
477 case CONSTANT_Long:
478 case CONSTANT_Double:
479 bp = bp + 8;
480 i++;
481 break;
482 default:
483 throw badClassFile("bad.const.pool.tag.at",
484 Byte.toString(tag),
485 Integer.toString(bp -1));
486 }
487 }
488 }
490 /** Read constant pool entry at start address i, use pool as a cache.
491 */
492 Object readPool(int i) {
493 Object result = poolObj[i];
494 if (result != null) return result;
496 int index = poolIdx[i];
497 if (index == 0) return null;
499 byte tag = buf[index];
500 switch (tag) {
501 case CONSTANT_Utf8:
502 poolObj[i] = names.fromUtf(buf, index + 3, getChar(index + 1));
503 break;
504 case CONSTANT_Unicode:
505 throw badClassFile("unicode.str.not.supported");
506 case CONSTANT_Class:
507 poolObj[i] = readClassOrType(getChar(index + 1));
508 break;
509 case CONSTANT_String:
510 // FIXME: (footprint) do not use toString here
511 poolObj[i] = readName(getChar(index + 1)).toString();
512 break;
513 case CONSTANT_Fieldref: {
514 ClassSymbol owner = readClassSymbol(getChar(index + 1));
515 NameAndType nt = readNameAndType(getChar(index + 3));
516 poolObj[i] = new VarSymbol(0, nt.name, nt.uniqueType.type, owner);
517 break;
518 }
519 case CONSTANT_Methodref:
520 case CONSTANT_InterfaceMethodref: {
521 ClassSymbol owner = readClassSymbol(getChar(index + 1));
522 NameAndType nt = readNameAndType(getChar(index + 3));
523 poolObj[i] = new MethodSymbol(0, nt.name, nt.uniqueType.type, owner);
524 break;
525 }
526 case CONSTANT_NameandType:
527 poolObj[i] = new NameAndType(
528 readName(getChar(index + 1)),
529 readType(getChar(index + 3)), types);
530 break;
531 case CONSTANT_Integer:
532 poolObj[i] = getInt(index + 1);
533 break;
534 case CONSTANT_Float:
535 poolObj[i] = new Float(getFloat(index + 1));
536 break;
537 case CONSTANT_Long:
538 poolObj[i] = new Long(getLong(index + 1));
539 break;
540 case CONSTANT_Double:
541 poolObj[i] = new Double(getDouble(index + 1));
542 break;
543 case CONSTANT_MethodHandle:
544 skipBytes(4);
545 break;
546 case CONSTANT_MethodType:
547 skipBytes(3);
548 break;
549 case CONSTANT_InvokeDynamic:
550 skipBytes(5);
551 break;
552 default:
553 throw badClassFile("bad.const.pool.tag", Byte.toString(tag));
554 }
555 return poolObj[i];
556 }
558 /** Read signature and convert to type.
559 */
560 Type readType(int i) {
561 int index = poolIdx[i];
562 return sigToType(buf, index + 3, getChar(index + 1));
563 }
565 /** If name is an array type or class signature, return the
566 * corresponding type; otherwise return a ClassSymbol with given name.
567 */
568 Object readClassOrType(int i) {
569 int index = poolIdx[i];
570 int len = getChar(index + 1);
571 int start = index + 3;
572 Assert.check(buf[start] == '[' || buf[start + len - 1] != ';');
573 // by the above assertion, the following test can be
574 // simplified to (buf[start] == '[')
575 return (buf[start] == '[' || buf[start + len - 1] == ';')
576 ? (Object)sigToType(buf, start, len)
577 : (Object)enterClass(names.fromUtf(internalize(buf, start,
578 len)));
579 }
581 /** Read signature and convert to type parameters.
582 */
583 List<Type> readTypeParams(int i) {
584 int index = poolIdx[i];
585 return sigToTypeParams(buf, index + 3, getChar(index + 1));
586 }
588 /** Read class entry.
589 */
590 ClassSymbol readClassSymbol(int i) {
591 Object obj = readPool(i);
592 if (obj != null && !(obj instanceof ClassSymbol))
593 throw badClassFile("bad.const.pool.entry",
594 currentClassFile.toString(),
595 "CONSTANT_Class_info", i);
596 return (ClassSymbol)obj;
597 }
599 /** Read name.
600 */
601 Name readName(int i) {
602 Object obj = readPool(i);
603 if (obj != null && !(obj instanceof Name))
604 throw badClassFile("bad.const.pool.entry",
605 currentClassFile.toString(),
606 "CONSTANT_Utf8_info or CONSTANT_String_info", i);
607 return (Name)obj;
608 }
610 /** Read name and type.
611 */
612 NameAndType readNameAndType(int i) {
613 Object obj = readPool(i);
614 if (obj != null && !(obj instanceof NameAndType))
615 throw badClassFile("bad.const.pool.entry",
616 currentClassFile.toString(),
617 "CONSTANT_NameAndType_info", i);
618 return (NameAndType)obj;
619 }
621 /************************************************************************
622 * Reading Types
623 ***********************************************************************/
625 /** The unread portion of the currently read type is
626 * signature[sigp..siglimit-1].
627 */
628 byte[] signature;
629 int sigp;
630 int siglimit;
631 boolean sigEnterPhase = false;
633 /** Convert signature to type, where signature is a byte array segment.
634 */
635 Type sigToType(byte[] sig, int offset, int len) {
636 signature = sig;
637 sigp = offset;
638 siglimit = offset + len;
639 return sigToType();
640 }
642 /** Convert signature to type, where signature is implicit.
643 */
644 Type sigToType() {
645 switch ((char) signature[sigp]) {
646 case 'T':
647 sigp++;
648 int start = sigp;
649 while (signature[sigp] != ';') sigp++;
650 sigp++;
651 return sigEnterPhase
652 ? Type.noType
653 : findTypeVar(names.fromUtf(signature, start, sigp - 1 - start));
654 case '+': {
655 sigp++;
656 Type t = sigToType();
657 return new WildcardType(t, BoundKind.EXTENDS,
658 syms.boundClass);
659 }
660 case '*':
661 sigp++;
662 return new WildcardType(syms.objectType, BoundKind.UNBOUND,
663 syms.boundClass);
664 case '-': {
665 sigp++;
666 Type t = sigToType();
667 return new WildcardType(t, BoundKind.SUPER,
668 syms.boundClass);
669 }
670 case 'B':
671 sigp++;
672 return syms.byteType;
673 case 'C':
674 sigp++;
675 return syms.charType;
676 case 'D':
677 sigp++;
678 return syms.doubleType;
679 case 'F':
680 sigp++;
681 return syms.floatType;
682 case 'I':
683 sigp++;
684 return syms.intType;
685 case 'J':
686 sigp++;
687 return syms.longType;
688 case 'L':
689 {
690 // int oldsigp = sigp;
691 Type t = classSigToType();
692 if (sigp < siglimit && signature[sigp] == '.')
693 throw badClassFile("deprecated inner class signature syntax " +
694 "(please recompile from source)");
695 /*
696 System.err.println(" decoded " +
697 new String(signature, oldsigp, sigp-oldsigp) +
698 " => " + t + " outer " + t.outer());
699 */
700 return t;
701 }
702 case 'S':
703 sigp++;
704 return syms.shortType;
705 case 'V':
706 sigp++;
707 return syms.voidType;
708 case 'Z':
709 sigp++;
710 return syms.booleanType;
711 case '[':
712 sigp++;
713 return new ArrayType(sigToType(), syms.arrayClass);
714 case '(':
715 sigp++;
716 List<Type> argtypes = sigToTypes(')');
717 Type restype = sigToType();
718 List<Type> thrown = List.nil();
719 while (signature[sigp] == '^') {
720 sigp++;
721 thrown = thrown.prepend(sigToType());
722 }
723 // if there is a typevar in the throws clause we should state it.
724 for (List<Type> l = thrown; l.nonEmpty(); l = l.tail) {
725 if (l.head.hasTag(TYPEVAR)) {
726 l.head.tsym.flags_field |= THROWS;
727 }
728 }
729 return new MethodType(argtypes,
730 restype,
731 thrown.reverse(),
732 syms.methodClass);
733 case '<':
734 typevars = typevars.dup(currentOwner);
735 Type poly = new ForAll(sigToTypeParams(), sigToType());
736 typevars = typevars.leave();
737 return poly;
738 default:
739 throw badClassFile("bad.signature",
740 Convert.utf2string(signature, sigp, 10));
741 }
742 }
744 byte[] signatureBuffer = new byte[0];
745 int sbp = 0;
746 /** Convert class signature to type, where signature is implicit.
747 */
748 Type classSigToType() {
749 if (signature[sigp] != 'L')
750 throw badClassFile("bad.class.signature",
751 Convert.utf2string(signature, sigp, 10));
752 sigp++;
753 Type outer = Type.noType;
754 int startSbp = sbp;
756 while (true) {
757 final byte c = signature[sigp++];
758 switch (c) {
760 case ';': { // end
761 ClassSymbol t = enterClass(names.fromUtf(signatureBuffer,
762 startSbp,
763 sbp - startSbp));
765 try {
766 return (outer == Type.noType) ?
767 t.erasure(types) :
768 new ClassType(outer, List.<Type>nil(), t);
769 } finally {
770 sbp = startSbp;
771 }
772 }
774 case '<': // generic arguments
775 ClassSymbol t = enterClass(names.fromUtf(signatureBuffer,
776 startSbp,
777 sbp - startSbp));
778 outer = new ClassType(outer, sigToTypes('>'), t) {
779 boolean completed = false;
780 @Override
781 public Type getEnclosingType() {
782 if (!completed) {
783 completed = true;
784 tsym.complete();
785 Type enclosingType = tsym.type.getEnclosingType();
786 if (enclosingType != Type.noType) {
787 List<Type> typeArgs =
788 super.getEnclosingType().allparams();
789 List<Type> typeParams =
790 enclosingType.allparams();
791 if (typeParams.length() != typeArgs.length()) {
792 // no "rare" types
793 super.setEnclosingType(types.erasure(enclosingType));
794 } else {
795 super.setEnclosingType(types.subst(enclosingType,
796 typeParams,
797 typeArgs));
798 }
799 } else {
800 super.setEnclosingType(Type.noType);
801 }
802 }
803 return super.getEnclosingType();
804 }
805 @Override
806 public void setEnclosingType(Type outer) {
807 throw new UnsupportedOperationException();
808 }
809 };
810 switch (signature[sigp++]) {
811 case ';':
812 if (sigp < signature.length && signature[sigp] == '.') {
813 // support old-style GJC signatures
814 // The signature produced was
815 // Lfoo/Outer<Lfoo/X;>;.Lfoo/Outer$Inner<Lfoo/Y;>;
816 // rather than say
817 // Lfoo/Outer<Lfoo/X;>.Inner<Lfoo/Y;>;
818 // so we skip past ".Lfoo/Outer$"
819 sigp += (sbp - startSbp) + // "foo/Outer"
820 3; // ".L" and "$"
821 signatureBuffer[sbp++] = (byte)'$';
822 break;
823 } else {
824 sbp = startSbp;
825 return outer;
826 }
827 case '.':
828 signatureBuffer[sbp++] = (byte)'$';
829 break;
830 default:
831 throw new AssertionError(signature[sigp-1]);
832 }
833 continue;
835 case '.':
836 //we have seen an enclosing non-generic class
837 if (outer != Type.noType) {
838 t = enterClass(names.fromUtf(signatureBuffer,
839 startSbp,
840 sbp - startSbp));
841 outer = new ClassType(outer, List.<Type>nil(), t);
842 }
843 signatureBuffer[sbp++] = (byte)'$';
844 continue;
845 case '/':
846 signatureBuffer[sbp++] = (byte)'.';
847 continue;
848 default:
849 signatureBuffer[sbp++] = c;
850 continue;
851 }
852 }
853 }
855 /** Convert (implicit) signature to list of types
856 * until `terminator' is encountered.
857 */
858 List<Type> sigToTypes(char terminator) {
859 List<Type> head = List.of(null);
860 List<Type> tail = head;
861 while (signature[sigp] != terminator)
862 tail = tail.setTail(List.of(sigToType()));
863 sigp++;
864 return head.tail;
865 }
867 /** Convert signature to type parameters, where signature is a byte
868 * array segment.
869 */
870 List<Type> sigToTypeParams(byte[] sig, int offset, int len) {
871 signature = sig;
872 sigp = offset;
873 siglimit = offset + len;
874 return sigToTypeParams();
875 }
877 /** Convert signature to type parameters, where signature is implicit.
878 */
879 List<Type> sigToTypeParams() {
880 List<Type> tvars = List.nil();
881 if (signature[sigp] == '<') {
882 sigp++;
883 int start = sigp;
884 sigEnterPhase = true;
885 while (signature[sigp] != '>')
886 tvars = tvars.prepend(sigToTypeParam());
887 sigEnterPhase = false;
888 sigp = start;
889 while (signature[sigp] != '>')
890 sigToTypeParam();
891 sigp++;
892 }
893 return tvars.reverse();
894 }
896 /** Convert (implicit) signature to type parameter.
897 */
898 Type sigToTypeParam() {
899 int start = sigp;
900 while (signature[sigp] != ':') sigp++;
901 Name name = names.fromUtf(signature, start, sigp - start);
902 TypeVar tvar;
903 if (sigEnterPhase) {
904 tvar = new TypeVar(name, currentOwner, syms.botType);
905 typevars.enter(tvar.tsym);
906 } else {
907 tvar = (TypeVar)findTypeVar(name);
908 }
909 List<Type> bounds = List.nil();
910 boolean allInterfaces = false;
911 if (signature[sigp] == ':' && signature[sigp+1] == ':') {
912 sigp++;
913 allInterfaces = true;
914 }
915 while (signature[sigp] == ':') {
916 sigp++;
917 bounds = bounds.prepend(sigToType());
918 }
919 if (!sigEnterPhase) {
920 types.setBounds(tvar, bounds.reverse(), allInterfaces);
921 }
922 return tvar;
923 }
925 /** Find type variable with given name in `typevars' scope.
926 */
927 Type findTypeVar(Name name) {
928 Scope.Entry e = typevars.lookup(name);
929 if (e.scope != null) {
930 return e.sym.type;
931 } else {
932 if (readingClassAttr) {
933 // While reading the class attribute, the supertypes
934 // might refer to a type variable from an enclosing element
935 // (method or class).
936 // If the type variable is defined in the enclosing class,
937 // we can actually find it in
938 // currentOwner.owner.type.getTypeArguments()
939 // However, until we have read the enclosing method attribute
940 // we don't know for sure if this owner is correct. It could
941 // be a method and there is no way to tell before reading the
942 // enclosing method attribute.
943 TypeVar t = new TypeVar(name, currentOwner, syms.botType);
944 missingTypeVariables = missingTypeVariables.prepend(t);
945 // System.err.println("Missing type var " + name);
946 return t;
947 }
948 throw badClassFile("undecl.type.var", name);
949 }
950 }
952 /************************************************************************
953 * Reading Attributes
954 ***********************************************************************/
956 protected enum AttributeKind { CLASS, MEMBER };
957 protected abstract class AttributeReader {
958 protected AttributeReader(Name name, ClassFile.Version version, Set<AttributeKind> kinds) {
959 this.name = name;
960 this.version = version;
961 this.kinds = kinds;
962 }
964 protected boolean accepts(AttributeKind kind) {
965 if (kinds.contains(kind)) {
966 if (majorVersion > version.major || (majorVersion == version.major && minorVersion >= version.minor))
967 return true;
969 if (lintClassfile && !warnedAttrs.contains(name)) {
970 JavaFileObject prev = log.useSource(currentClassFile);
971 try {
972 log.warning(LintCategory.CLASSFILE, (DiagnosticPosition) null, "future.attr",
973 name, version.major, version.minor, majorVersion, minorVersion);
974 } finally {
975 log.useSource(prev);
976 }
977 warnedAttrs.add(name);
978 }
979 }
980 return false;
981 }
983 protected abstract void read(Symbol sym, int attrLen);
985 protected final Name name;
986 protected final ClassFile.Version version;
987 protected final Set<AttributeKind> kinds;
988 }
990 protected Set<AttributeKind> CLASS_ATTRIBUTE =
991 EnumSet.of(AttributeKind.CLASS);
992 protected Set<AttributeKind> MEMBER_ATTRIBUTE =
993 EnumSet.of(AttributeKind.MEMBER);
994 protected Set<AttributeKind> CLASS_OR_MEMBER_ATTRIBUTE =
995 EnumSet.of(AttributeKind.CLASS, AttributeKind.MEMBER);
997 protected Map<Name, AttributeReader> attributeReaders = new HashMap<Name, AttributeReader>();
999 private void initAttributeReaders() {
1000 AttributeReader[] readers = {
1001 // v45.3 attributes
1003 new AttributeReader(names.Code, V45_3, MEMBER_ATTRIBUTE) {
1004 protected void read(Symbol sym, int attrLen) {
1005 if (readAllOfClassFile || saveParameterNames)
1006 ((MethodSymbol)sym).code = readCode(sym);
1007 else
1008 bp = bp + attrLen;
1009 }
1010 },
1012 new AttributeReader(names.ConstantValue, V45_3, MEMBER_ATTRIBUTE) {
1013 protected void read(Symbol sym, int attrLen) {
1014 Object v = readPool(nextChar());
1015 // Ignore ConstantValue attribute if field not final.
1016 if ((sym.flags() & FINAL) != 0)
1017 ((VarSymbol) sym).setData(v);
1018 }
1019 },
1021 new AttributeReader(names.Deprecated, V45_3, CLASS_OR_MEMBER_ATTRIBUTE) {
1022 protected void read(Symbol sym, int attrLen) {
1023 sym.flags_field |= DEPRECATED;
1024 }
1025 },
1027 new AttributeReader(names.Exceptions, V45_3, CLASS_OR_MEMBER_ATTRIBUTE) {
1028 protected void read(Symbol sym, int attrLen) {
1029 int nexceptions = nextChar();
1030 List<Type> thrown = List.nil();
1031 for (int j = 0; j < nexceptions; j++)
1032 thrown = thrown.prepend(readClassSymbol(nextChar()).type);
1033 if (sym.type.getThrownTypes().isEmpty())
1034 sym.type.asMethodType().thrown = thrown.reverse();
1035 }
1036 },
1038 new AttributeReader(names.InnerClasses, V45_3, CLASS_ATTRIBUTE) {
1039 protected void read(Symbol sym, int attrLen) {
1040 ClassSymbol c = (ClassSymbol) sym;
1041 readInnerClasses(c);
1042 }
1043 },
1045 new AttributeReader(names.LocalVariableTable, V45_3, CLASS_OR_MEMBER_ATTRIBUTE) {
1046 protected void read(Symbol sym, int attrLen) {
1047 int newbp = bp + attrLen;
1048 if (saveParameterNames && !sawMethodParameters) {
1049 // Pick up parameter names from the variable table.
1050 // Parameter names are not explicitly identified as such,
1051 // but all parameter name entries in the LocalVariableTable
1052 // have a start_pc of 0. Therefore, we record the name
1053 // indicies of all slots with a start_pc of zero in the
1054 // parameterNameIndicies array.
1055 // Note that this implicitly honors the JVMS spec that
1056 // there may be more than one LocalVariableTable, and that
1057 // there is no specified ordering for the entries.
1058 int numEntries = nextChar();
1059 for (int i = 0; i < numEntries; i++) {
1060 int start_pc = nextChar();
1061 int length = nextChar();
1062 int nameIndex = nextChar();
1063 int sigIndex = nextChar();
1064 int register = nextChar();
1065 if (start_pc == 0) {
1066 // ensure array large enough
1067 if (register >= parameterNameIndices.length) {
1068 int newSize = Math.max(register, parameterNameIndices.length + 8);
1069 parameterNameIndices =
1070 Arrays.copyOf(parameterNameIndices, newSize);
1071 }
1072 parameterNameIndices[register] = nameIndex;
1073 haveParameterNameIndices = true;
1074 }
1075 }
1076 }
1077 bp = newbp;
1078 }
1079 },
1081 new AttributeReader(names.MethodParameters, V52, MEMBER_ATTRIBUTE) {
1082 protected void read(Symbol sym, int attrlen) {
1083 int newbp = bp + attrlen;
1084 if (saveParameterNames) {
1085 sawMethodParameters = true;
1086 int numEntries = nextByte();
1087 parameterNameIndices = new int[numEntries];
1088 haveParameterNameIndices = true;
1089 for (int i = 0; i < numEntries; i++) {
1090 int nameIndex = nextChar();
1091 int flags = nextChar();
1092 parameterNameIndices[i] = nameIndex;
1093 }
1094 }
1095 bp = newbp;
1096 }
1097 },
1100 new AttributeReader(names.SourceFile, V45_3, CLASS_ATTRIBUTE) {
1101 protected void read(Symbol sym, int attrLen) {
1102 ClassSymbol c = (ClassSymbol) sym;
1103 Name n = readName(nextChar());
1104 c.sourcefile = new SourceFileObject(n, c.flatname);
1105 // If the class is a toplevel class, originating from a Java source file,
1106 // but the class name does not match the file name, then it is
1107 // an auxiliary class.
1108 String sn = n.toString();
1109 if (c.owner.kind == Kinds.PCK &&
1110 sn.endsWith(".java") &&
1111 !sn.equals(c.name.toString()+".java")) {
1112 c.flags_field |= AUXILIARY;
1113 }
1114 }
1115 },
1117 new AttributeReader(names.Synthetic, V45_3, CLASS_OR_MEMBER_ATTRIBUTE) {
1118 protected void read(Symbol sym, int attrLen) {
1119 // bridge methods are visible when generics not enabled
1120 if (allowGenerics || (sym.flags_field & BRIDGE) == 0)
1121 sym.flags_field |= SYNTHETIC;
1122 }
1123 },
1125 // standard v49 attributes
1127 new AttributeReader(names.EnclosingMethod, V49, CLASS_ATTRIBUTE) {
1128 protected void read(Symbol sym, int attrLen) {
1129 int newbp = bp + attrLen;
1130 readEnclosingMethodAttr(sym);
1131 bp = newbp;
1132 }
1133 },
1135 new AttributeReader(names.Signature, V49, CLASS_OR_MEMBER_ATTRIBUTE) {
1136 @Override
1137 protected boolean accepts(AttributeKind kind) {
1138 return super.accepts(kind) && allowGenerics;
1139 }
1141 protected void read(Symbol sym, int attrLen) {
1142 if (sym.kind == TYP) {
1143 ClassSymbol c = (ClassSymbol) sym;
1144 readingClassAttr = true;
1145 try {
1146 ClassType ct1 = (ClassType)c.type;
1147 Assert.check(c == currentOwner);
1148 ct1.typarams_field = readTypeParams(nextChar());
1149 ct1.supertype_field = sigToType();
1150 ListBuffer<Type> is = new ListBuffer<Type>();
1151 while (sigp != siglimit) is.append(sigToType());
1152 ct1.interfaces_field = is.toList();
1153 } finally {
1154 readingClassAttr = false;
1155 }
1156 } else {
1157 List<Type> thrown = sym.type.getThrownTypes();
1158 sym.type = readType(nextChar());
1159 //- System.err.println(" # " + sym.type);
1160 if (sym.kind == MTH && sym.type.getThrownTypes().isEmpty())
1161 sym.type.asMethodType().thrown = thrown;
1163 }
1164 }
1165 },
1167 // v49 annotation attributes
1169 new AttributeReader(names.AnnotationDefault, V49, CLASS_OR_MEMBER_ATTRIBUTE) {
1170 protected void read(Symbol sym, int attrLen) {
1171 attachAnnotationDefault(sym);
1172 }
1173 },
1175 new AttributeReader(names.RuntimeInvisibleAnnotations, V49, CLASS_OR_MEMBER_ATTRIBUTE) {
1176 protected void read(Symbol sym, int attrLen) {
1177 attachAnnotations(sym);
1178 }
1179 },
1181 new AttributeReader(names.RuntimeInvisibleParameterAnnotations, V49, CLASS_OR_MEMBER_ATTRIBUTE) {
1182 protected void read(Symbol sym, int attrLen) {
1183 attachParameterAnnotations(sym);
1184 }
1185 },
1187 new AttributeReader(names.RuntimeVisibleAnnotations, V49, CLASS_OR_MEMBER_ATTRIBUTE) {
1188 protected void read(Symbol sym, int attrLen) {
1189 attachAnnotations(sym);
1190 }
1191 },
1193 new AttributeReader(names.RuntimeVisibleParameterAnnotations, V49, CLASS_OR_MEMBER_ATTRIBUTE) {
1194 protected void read(Symbol sym, int attrLen) {
1195 attachParameterAnnotations(sym);
1196 }
1197 },
1199 // additional "legacy" v49 attributes, superceded by flags
1201 new AttributeReader(names.Annotation, V49, CLASS_OR_MEMBER_ATTRIBUTE) {
1202 protected void read(Symbol sym, int attrLen) {
1203 if (allowAnnotations)
1204 sym.flags_field |= ANNOTATION;
1205 }
1206 },
1208 new AttributeReader(names.Bridge, V49, MEMBER_ATTRIBUTE) {
1209 protected void read(Symbol sym, int attrLen) {
1210 sym.flags_field |= BRIDGE;
1211 if (!allowGenerics)
1212 sym.flags_field &= ~SYNTHETIC;
1213 }
1214 },
1216 new AttributeReader(names.Enum, V49, CLASS_OR_MEMBER_ATTRIBUTE) {
1217 protected void read(Symbol sym, int attrLen) {
1218 sym.flags_field |= ENUM;
1219 }
1220 },
1222 new AttributeReader(names.Varargs, V49, CLASS_OR_MEMBER_ATTRIBUTE) {
1223 protected void read(Symbol sym, int attrLen) {
1224 if (allowVarargs)
1225 sym.flags_field |= VARARGS;
1226 }
1227 },
1229 new AttributeReader(names.RuntimeVisibleTypeAnnotations, V52, CLASS_OR_MEMBER_ATTRIBUTE) {
1230 protected void read(Symbol sym, int attrLen) {
1231 attachTypeAnnotations(sym);
1232 }
1233 },
1235 new AttributeReader(names.RuntimeInvisibleTypeAnnotations, V52, CLASS_OR_MEMBER_ATTRIBUTE) {
1236 protected void read(Symbol sym, int attrLen) {
1237 attachTypeAnnotations(sym);
1238 }
1239 },
1242 // The following attributes for a Code attribute are not currently handled
1243 // StackMapTable
1244 // SourceDebugExtension
1245 // LineNumberTable
1246 // LocalVariableTypeTable
1247 };
1249 for (AttributeReader r: readers)
1250 attributeReaders.put(r.name, r);
1251 }
1253 /** Report unrecognized attribute.
1254 */
1255 void unrecognized(Name attrName) {
1256 if (checkClassFile)
1257 printCCF("ccf.unrecognized.attribute", attrName);
1258 }
1262 protected void readEnclosingMethodAttr(Symbol sym) {
1263 // sym is a nested class with an "Enclosing Method" attribute
1264 // remove sym from it's current owners scope and place it in
1265 // the scope specified by the attribute
1266 sym.owner.members().remove(sym);
1267 ClassSymbol self = (ClassSymbol)sym;
1268 ClassSymbol c = readClassSymbol(nextChar());
1269 NameAndType nt = readNameAndType(nextChar());
1271 if (c.members_field == null)
1272 throw badClassFile("bad.enclosing.class", self, c);
1274 MethodSymbol m = findMethod(nt, c.members_field, self.flags());
1275 if (nt != null && m == null)
1276 throw badClassFile("bad.enclosing.method", self);
1278 self.name = simpleBinaryName(self.flatname, c.flatname) ;
1279 self.owner = m != null ? m : c;
1280 if (self.name.isEmpty())
1281 self.fullname = names.empty;
1282 else
1283 self.fullname = ClassSymbol.formFullName(self.name, self.owner);
1285 if (m != null) {
1286 ((ClassType)sym.type).setEnclosingType(m.type);
1287 } else if ((self.flags_field & STATIC) == 0) {
1288 ((ClassType)sym.type).setEnclosingType(c.type);
1289 } else {
1290 ((ClassType)sym.type).setEnclosingType(Type.noType);
1291 }
1292 enterTypevars(self);
1293 if (!missingTypeVariables.isEmpty()) {
1294 ListBuffer<Type> typeVars = new ListBuffer<Type>();
1295 for (Type typevar : missingTypeVariables) {
1296 typeVars.append(findTypeVar(typevar.tsym.name));
1297 }
1298 foundTypeVariables = typeVars.toList();
1299 } else {
1300 foundTypeVariables = List.nil();
1301 }
1302 }
1304 // See java.lang.Class
1305 private Name simpleBinaryName(Name self, Name enclosing) {
1306 String simpleBinaryName = self.toString().substring(enclosing.toString().length());
1307 if (simpleBinaryName.length() < 1 || simpleBinaryName.charAt(0) != '$')
1308 throw badClassFile("bad.enclosing.method", self);
1309 int index = 1;
1310 while (index < simpleBinaryName.length() &&
1311 isAsciiDigit(simpleBinaryName.charAt(index)))
1312 index++;
1313 return names.fromString(simpleBinaryName.substring(index));
1314 }
1316 private MethodSymbol findMethod(NameAndType nt, Scope scope, long flags) {
1317 if (nt == null)
1318 return null;
1320 MethodType type = nt.uniqueType.type.asMethodType();
1322 for (Scope.Entry e = scope.lookup(nt.name); e.scope != null; e = e.next())
1323 if (e.sym.kind == MTH && isSameBinaryType(e.sym.type.asMethodType(), type))
1324 return (MethodSymbol)e.sym;
1326 if (nt.name != names.init)
1327 // not a constructor
1328 return null;
1329 if ((flags & INTERFACE) != 0)
1330 // no enclosing instance
1331 return null;
1332 if (nt.uniqueType.type.getParameterTypes().isEmpty())
1333 // no parameters
1334 return null;
1336 // A constructor of an inner class.
1337 // Remove the first argument (the enclosing instance)
1338 nt.setType(new MethodType(nt.uniqueType.type.getParameterTypes().tail,
1339 nt.uniqueType.type.getReturnType(),
1340 nt.uniqueType.type.getThrownTypes(),
1341 syms.methodClass));
1342 // Try searching again
1343 return findMethod(nt, scope, flags);
1344 }
1346 /** Similar to Types.isSameType but avoids completion */
1347 private boolean isSameBinaryType(MethodType mt1, MethodType mt2) {
1348 List<Type> types1 = types.erasure(mt1.getParameterTypes())
1349 .prepend(types.erasure(mt1.getReturnType()));
1350 List<Type> types2 = mt2.getParameterTypes().prepend(mt2.getReturnType());
1351 while (!types1.isEmpty() && !types2.isEmpty()) {
1352 if (types1.head.tsym != types2.head.tsym)
1353 return false;
1354 types1 = types1.tail;
1355 types2 = types2.tail;
1356 }
1357 return types1.isEmpty() && types2.isEmpty();
1358 }
1360 /**
1361 * Character.isDigit answers <tt>true</tt> to some non-ascii
1362 * digits. This one does not. <b>copied from java.lang.Class</b>
1363 */
1364 private static boolean isAsciiDigit(char c) {
1365 return '0' <= c && c <= '9';
1366 }
1368 /** Read member attributes.
1369 */
1370 void readMemberAttrs(Symbol sym) {
1371 readAttrs(sym, AttributeKind.MEMBER);
1372 }
1374 void readAttrs(Symbol sym, AttributeKind kind) {
1375 char ac = nextChar();
1376 for (int i = 0; i < ac; i++) {
1377 Name attrName = readName(nextChar());
1378 int attrLen = nextInt();
1379 AttributeReader r = attributeReaders.get(attrName);
1380 if (r != null && r.accepts(kind))
1381 r.read(sym, attrLen);
1382 else {
1383 unrecognized(attrName);
1384 bp = bp + attrLen;
1385 }
1386 }
1387 }
1389 private boolean readingClassAttr = false;
1390 private List<Type> missingTypeVariables = List.nil();
1391 private List<Type> foundTypeVariables = List.nil();
1393 /** Read class attributes.
1394 */
1395 void readClassAttrs(ClassSymbol c) {
1396 readAttrs(c, AttributeKind.CLASS);
1397 }
1399 /** Read code block.
1400 */
1401 Code readCode(Symbol owner) {
1402 nextChar(); // max_stack
1403 nextChar(); // max_locals
1404 final int code_length = nextInt();
1405 bp += code_length;
1406 final char exception_table_length = nextChar();
1407 bp += exception_table_length * 8;
1408 readMemberAttrs(owner);
1409 return null;
1410 }
1412 /************************************************************************
1413 * Reading Java-language annotations
1414 ***********************************************************************/
1416 /** Attach annotations.
1417 */
1418 void attachAnnotations(final Symbol sym) {
1419 int numAttributes = nextChar();
1420 if (numAttributes != 0) {
1421 ListBuffer<CompoundAnnotationProxy> proxies =
1422 new ListBuffer<CompoundAnnotationProxy>();
1423 for (int i = 0; i<numAttributes; i++) {
1424 CompoundAnnotationProxy proxy = readCompoundAnnotation();
1425 if (proxy.type.tsym == syms.proprietaryType.tsym)
1426 sym.flags_field |= PROPRIETARY;
1427 else if (proxy.type.tsym == syms.profileType.tsym) {
1428 if (profile != Profile.DEFAULT) {
1429 for (Pair<Name,Attribute> v: proxy.values) {
1430 if (v.fst == names.value && v.snd instanceof Attribute.Constant) {
1431 Attribute.Constant c = (Attribute.Constant) v.snd;
1432 if (c.type == syms.intType && ((Integer) c.value) > profile.value) {
1433 sym.flags_field |= NOT_IN_PROFILE;
1434 }
1435 }
1436 }
1437 }
1438 } else
1439 proxies.append(proxy);
1440 }
1441 annotate.normal(new AnnotationCompleter(sym, proxies.toList()));
1442 }
1443 }
1445 /** Attach parameter annotations.
1446 */
1447 void attachParameterAnnotations(final Symbol method) {
1448 final MethodSymbol meth = (MethodSymbol)method;
1449 int numParameters = buf[bp++] & 0xFF;
1450 List<VarSymbol> parameters = meth.params();
1451 int pnum = 0;
1452 while (parameters.tail != null) {
1453 attachAnnotations(parameters.head);
1454 parameters = parameters.tail;
1455 pnum++;
1456 }
1457 if (pnum != numParameters) {
1458 throw badClassFile("bad.runtime.invisible.param.annotations", meth);
1459 }
1460 }
1462 void attachTypeAnnotations(final Symbol sym) {
1463 int numAttributes = nextChar();
1464 if (numAttributes != 0) {
1465 ListBuffer<TypeAnnotationProxy> proxies = new ListBuffer<>();
1466 for (int i = 0; i < numAttributes; i++)
1467 proxies.append(readTypeAnnotation());
1468 annotate.normal(new TypeAnnotationCompleter(sym, proxies.toList()));
1469 }
1470 }
1472 /** Attach the default value for an annotation element.
1473 */
1474 void attachAnnotationDefault(final Symbol sym) {
1475 final MethodSymbol meth = (MethodSymbol)sym; // only on methods
1476 final Attribute value = readAttributeValue();
1478 // The default value is set later during annotation. It might
1479 // be the case that the Symbol sym is annotated _after_ the
1480 // repeating instances that depend on this default value,
1481 // because of this we set an interim value that tells us this
1482 // element (most likely) has a default.
1483 //
1484 // Set interim value for now, reset just before we do this
1485 // properly at annotate time.
1486 meth.defaultValue = value;
1487 annotate.normal(new AnnotationDefaultCompleter(meth, value));
1488 }
1490 Type readTypeOrClassSymbol(int i) {
1491 // support preliminary jsr175-format class files
1492 if (buf[poolIdx[i]] == CONSTANT_Class)
1493 return readClassSymbol(i).type;
1494 return readType(i);
1495 }
1496 Type readEnumType(int i) {
1497 // support preliminary jsr175-format class files
1498 int index = poolIdx[i];
1499 int length = getChar(index + 1);
1500 if (buf[index + length + 2] != ';')
1501 return enterClass(readName(i)).type;
1502 return readType(i);
1503 }
1505 CompoundAnnotationProxy readCompoundAnnotation() {
1506 Type t = readTypeOrClassSymbol(nextChar());
1507 int numFields = nextChar();
1508 ListBuffer<Pair<Name,Attribute>> pairs =
1509 new ListBuffer<Pair<Name,Attribute>>();
1510 for (int i=0; i<numFields; i++) {
1511 Name name = readName(nextChar());
1512 Attribute value = readAttributeValue();
1513 pairs.append(new Pair<Name,Attribute>(name, value));
1514 }
1515 return new CompoundAnnotationProxy(t, pairs.toList());
1516 }
1518 TypeAnnotationProxy readTypeAnnotation() {
1519 TypeAnnotationPosition position = readPosition();
1520 CompoundAnnotationProxy proxy = readCompoundAnnotation();
1522 return new TypeAnnotationProxy(proxy, position);
1523 }
1525 TypeAnnotationPosition readPosition() {
1526 int tag = nextByte(); // TargetType tag is a byte
1528 if (!TargetType.isValidTargetTypeValue(tag))
1529 throw this.badClassFile("bad.type.annotation.value", String.format("0x%02X", tag));
1531 TypeAnnotationPosition position = new TypeAnnotationPosition();
1532 TargetType type = TargetType.fromTargetTypeValue(tag);
1534 position.type = type;
1536 switch (type) {
1537 // instanceof
1538 case INSTANCEOF:
1539 // new expression
1540 case NEW:
1541 // constructor/method reference receiver
1542 case CONSTRUCTOR_REFERENCE:
1543 case METHOD_REFERENCE:
1544 position.offset = nextChar();
1545 break;
1546 // local variable
1547 case LOCAL_VARIABLE:
1548 // resource variable
1549 case RESOURCE_VARIABLE:
1550 int table_length = nextChar();
1551 position.lvarOffset = new int[table_length];
1552 position.lvarLength = new int[table_length];
1553 position.lvarIndex = new int[table_length];
1555 for (int i = 0; i < table_length; ++i) {
1556 position.lvarOffset[i] = nextChar();
1557 position.lvarLength[i] = nextChar();
1558 position.lvarIndex[i] = nextChar();
1559 }
1560 break;
1561 // exception parameter
1562 case EXCEPTION_PARAMETER:
1563 position.exception_index = nextChar();
1564 break;
1565 // method receiver
1566 case METHOD_RECEIVER:
1567 // Do nothing
1568 break;
1569 // type parameter
1570 case CLASS_TYPE_PARAMETER:
1571 case METHOD_TYPE_PARAMETER:
1572 position.parameter_index = nextByte();
1573 break;
1574 // type parameter bound
1575 case CLASS_TYPE_PARAMETER_BOUND:
1576 case METHOD_TYPE_PARAMETER_BOUND:
1577 position.parameter_index = nextByte();
1578 position.bound_index = nextByte();
1579 break;
1580 // class extends or implements clause
1581 case CLASS_EXTENDS:
1582 position.type_index = nextChar();
1583 break;
1584 // throws
1585 case THROWS:
1586 position.type_index = nextChar();
1587 break;
1588 // method parameter
1589 case METHOD_FORMAL_PARAMETER:
1590 position.parameter_index = nextByte();
1591 break;
1592 // type cast
1593 case CAST:
1594 // method/constructor/reference type argument
1595 case CONSTRUCTOR_INVOCATION_TYPE_ARGUMENT:
1596 case METHOD_INVOCATION_TYPE_ARGUMENT:
1597 case CONSTRUCTOR_REFERENCE_TYPE_ARGUMENT:
1598 case METHOD_REFERENCE_TYPE_ARGUMENT:
1599 position.offset = nextChar();
1600 position.type_index = nextByte();
1601 break;
1602 // We don't need to worry about these
1603 case METHOD_RETURN:
1604 case FIELD:
1605 break;
1606 case UNKNOWN:
1607 throw new AssertionError("jvm.ClassReader: UNKNOWN target type should never occur!");
1608 default:
1609 throw new AssertionError("jvm.ClassReader: Unknown target type for position: " + position);
1610 }
1612 { // See whether there is location info and read it
1613 int len = nextByte();
1614 ListBuffer<Integer> loc = new ListBuffer<>();
1615 for (int i = 0; i < len * TypeAnnotationPosition.TypePathEntry.bytesPerEntry; ++i)
1616 loc = loc.append(nextByte());
1617 position.location = TypeAnnotationPosition.getTypePathFromBinary(loc.toList());
1618 }
1620 return position;
1621 }
1623 Attribute readAttributeValue() {
1624 char c = (char) buf[bp++];
1625 switch (c) {
1626 case 'B':
1627 return new Attribute.Constant(syms.byteType, readPool(nextChar()));
1628 case 'C':
1629 return new Attribute.Constant(syms.charType, readPool(nextChar()));
1630 case 'D':
1631 return new Attribute.Constant(syms.doubleType, readPool(nextChar()));
1632 case 'F':
1633 return new Attribute.Constant(syms.floatType, readPool(nextChar()));
1634 case 'I':
1635 return new Attribute.Constant(syms.intType, readPool(nextChar()));
1636 case 'J':
1637 return new Attribute.Constant(syms.longType, readPool(nextChar()));
1638 case 'S':
1639 return new Attribute.Constant(syms.shortType, readPool(nextChar()));
1640 case 'Z':
1641 return new Attribute.Constant(syms.booleanType, readPool(nextChar()));
1642 case 's':
1643 return new Attribute.Constant(syms.stringType, readPool(nextChar()).toString());
1644 case 'e':
1645 return new EnumAttributeProxy(readEnumType(nextChar()), readName(nextChar()));
1646 case 'c':
1647 return new Attribute.Class(types, readTypeOrClassSymbol(nextChar()));
1648 case '[': {
1649 int n = nextChar();
1650 ListBuffer<Attribute> l = new ListBuffer<Attribute>();
1651 for (int i=0; i<n; i++)
1652 l.append(readAttributeValue());
1653 return new ArrayAttributeProxy(l.toList());
1654 }
1655 case '@':
1656 return readCompoundAnnotation();
1657 default:
1658 throw new AssertionError("unknown annotation tag '" + c + "'");
1659 }
1660 }
1662 interface ProxyVisitor extends Attribute.Visitor {
1663 void visitEnumAttributeProxy(EnumAttributeProxy proxy);
1664 void visitArrayAttributeProxy(ArrayAttributeProxy proxy);
1665 void visitCompoundAnnotationProxy(CompoundAnnotationProxy proxy);
1666 }
1668 static class EnumAttributeProxy extends Attribute {
1669 Type enumType;
1670 Name enumerator;
1671 public EnumAttributeProxy(Type enumType, Name enumerator) {
1672 super(null);
1673 this.enumType = enumType;
1674 this.enumerator = enumerator;
1675 }
1676 public void accept(Visitor v) { ((ProxyVisitor)v).visitEnumAttributeProxy(this); }
1677 @Override
1678 public String toString() {
1679 return "/*proxy enum*/" + enumType + "." + enumerator;
1680 }
1681 }
1683 static class ArrayAttributeProxy extends Attribute {
1684 List<Attribute> values;
1685 ArrayAttributeProxy(List<Attribute> values) {
1686 super(null);
1687 this.values = values;
1688 }
1689 public void accept(Visitor v) { ((ProxyVisitor)v).visitArrayAttributeProxy(this); }
1690 @Override
1691 public String toString() {
1692 return "{" + values + "}";
1693 }
1694 }
1696 /** A temporary proxy representing a compound attribute.
1697 */
1698 static class CompoundAnnotationProxy extends Attribute {
1699 final List<Pair<Name,Attribute>> values;
1700 public CompoundAnnotationProxy(Type type,
1701 List<Pair<Name,Attribute>> values) {
1702 super(type);
1703 this.values = values;
1704 }
1705 public void accept(Visitor v) { ((ProxyVisitor)v).visitCompoundAnnotationProxy(this); }
1706 @Override
1707 public String toString() {
1708 StringBuilder buf = new StringBuilder();
1709 buf.append("@");
1710 buf.append(type.tsym.getQualifiedName());
1711 buf.append("/*proxy*/{");
1712 boolean first = true;
1713 for (List<Pair<Name,Attribute>> v = values;
1714 v.nonEmpty(); v = v.tail) {
1715 Pair<Name,Attribute> value = v.head;
1716 if (!first) buf.append(",");
1717 first = false;
1718 buf.append(value.fst);
1719 buf.append("=");
1720 buf.append(value.snd);
1721 }
1722 buf.append("}");
1723 return buf.toString();
1724 }
1725 }
1727 /** A temporary proxy representing a type annotation.
1728 */
1729 static class TypeAnnotationProxy {
1730 final CompoundAnnotationProxy compound;
1731 final TypeAnnotationPosition position;
1732 public TypeAnnotationProxy(CompoundAnnotationProxy compound,
1733 TypeAnnotationPosition position) {
1734 this.compound = compound;
1735 this.position = position;
1736 }
1737 }
1739 class AnnotationDeproxy implements ProxyVisitor {
1740 private ClassSymbol requestingOwner = currentOwner.kind == MTH
1741 ? currentOwner.enclClass() : (ClassSymbol)currentOwner;
1743 List<Attribute.Compound> deproxyCompoundList(List<CompoundAnnotationProxy> pl) {
1744 // also must fill in types!!!!
1745 ListBuffer<Attribute.Compound> buf =
1746 new ListBuffer<Attribute.Compound>();
1747 for (List<CompoundAnnotationProxy> l = pl; l.nonEmpty(); l=l.tail) {
1748 buf.append(deproxyCompound(l.head));
1749 }
1750 return buf.toList();
1751 }
1753 Attribute.Compound deproxyCompound(CompoundAnnotationProxy a) {
1754 ListBuffer<Pair<Symbol.MethodSymbol,Attribute>> buf =
1755 new ListBuffer<Pair<Symbol.MethodSymbol,Attribute>>();
1756 for (List<Pair<Name,Attribute>> l = a.values;
1757 l.nonEmpty();
1758 l = l.tail) {
1759 MethodSymbol meth = findAccessMethod(a.type, l.head.fst);
1760 buf.append(new Pair<Symbol.MethodSymbol,Attribute>
1761 (meth, deproxy(meth.type.getReturnType(), l.head.snd)));
1762 }
1763 return new Attribute.Compound(a.type, buf.toList());
1764 }
1766 MethodSymbol findAccessMethod(Type container, Name name) {
1767 CompletionFailure failure = null;
1768 try {
1769 for (Scope.Entry e = container.tsym.members().lookup(name);
1770 e.scope != null;
1771 e = e.next()) {
1772 Symbol sym = e.sym;
1773 if (sym.kind == MTH && sym.type.getParameterTypes().length() == 0)
1774 return (MethodSymbol) sym;
1775 }
1776 } catch (CompletionFailure ex) {
1777 failure = ex;
1778 }
1779 // The method wasn't found: emit a warning and recover
1780 JavaFileObject prevSource = log.useSource(requestingOwner.classfile);
1781 try {
1782 if (lintClassfile) {
1783 if (failure == null) {
1784 log.warning("annotation.method.not.found",
1785 container,
1786 name);
1787 } else {
1788 log.warning("annotation.method.not.found.reason",
1789 container,
1790 name,
1791 failure.getDetailValue()); //diagnostic, if present
1792 }
1793 }
1794 } finally {
1795 log.useSource(prevSource);
1796 }
1797 // Construct a new method type and symbol. Use bottom
1798 // type (typeof null) as return type because this type is
1799 // a subtype of all reference types and can be converted
1800 // to primitive types by unboxing.
1801 MethodType mt = new MethodType(List.<Type>nil(),
1802 syms.botType,
1803 List.<Type>nil(),
1804 syms.methodClass);
1805 return new MethodSymbol(PUBLIC | ABSTRACT, name, mt, container.tsym);
1806 }
1808 Attribute result;
1809 Type type;
1810 Attribute deproxy(Type t, Attribute a) {
1811 Type oldType = type;
1812 try {
1813 type = t;
1814 a.accept(this);
1815 return result;
1816 } finally {
1817 type = oldType;
1818 }
1819 }
1821 // implement Attribute.Visitor below
1823 public void visitConstant(Attribute.Constant value) {
1824 // assert value.type == type;
1825 result = value;
1826 }
1828 public void visitClass(Attribute.Class clazz) {
1829 result = clazz;
1830 }
1832 public void visitEnum(Attribute.Enum e) {
1833 throw new AssertionError(); // shouldn't happen
1834 }
1836 public void visitCompound(Attribute.Compound compound) {
1837 throw new AssertionError(); // shouldn't happen
1838 }
1840 public void visitArray(Attribute.Array array) {
1841 throw new AssertionError(); // shouldn't happen
1842 }
1844 public void visitError(Attribute.Error e) {
1845 throw new AssertionError(); // shouldn't happen
1846 }
1848 public void visitEnumAttributeProxy(EnumAttributeProxy proxy) {
1849 // type.tsym.flatName() should == proxy.enumFlatName
1850 TypeSymbol enumTypeSym = proxy.enumType.tsym;
1851 VarSymbol enumerator = null;
1852 CompletionFailure failure = null;
1853 try {
1854 for (Scope.Entry e = enumTypeSym.members().lookup(proxy.enumerator);
1855 e.scope != null;
1856 e = e.next()) {
1857 if (e.sym.kind == VAR) {
1858 enumerator = (VarSymbol)e.sym;
1859 break;
1860 }
1861 }
1862 }
1863 catch (CompletionFailure ex) {
1864 failure = ex;
1865 }
1866 if (enumerator == null) {
1867 if (failure != null) {
1868 log.warning("unknown.enum.constant.reason",
1869 currentClassFile, enumTypeSym, proxy.enumerator,
1870 failure.getDiagnostic());
1871 } else {
1872 log.warning("unknown.enum.constant",
1873 currentClassFile, enumTypeSym, proxy.enumerator);
1874 }
1875 result = new Attribute.Enum(enumTypeSym.type,
1876 new VarSymbol(0, proxy.enumerator, syms.botType, enumTypeSym));
1877 } else {
1878 result = new Attribute.Enum(enumTypeSym.type, enumerator);
1879 }
1880 }
1882 public void visitArrayAttributeProxy(ArrayAttributeProxy proxy) {
1883 int length = proxy.values.length();
1884 Attribute[] ats = new Attribute[length];
1885 Type elemtype = types.elemtype(type);
1886 int i = 0;
1887 for (List<Attribute> p = proxy.values; p.nonEmpty(); p = p.tail) {
1888 ats[i++] = deproxy(elemtype, p.head);
1889 }
1890 result = new Attribute.Array(type, ats);
1891 }
1893 public void visitCompoundAnnotationProxy(CompoundAnnotationProxy proxy) {
1894 result = deproxyCompound(proxy);
1895 }
1896 }
1898 class AnnotationDefaultCompleter extends AnnotationDeproxy implements Annotate.Worker {
1899 final MethodSymbol sym;
1900 final Attribute value;
1901 final JavaFileObject classFile = currentClassFile;
1902 @Override
1903 public String toString() {
1904 return " ClassReader store default for " + sym.owner + "." + sym + " is " + value;
1905 }
1906 AnnotationDefaultCompleter(MethodSymbol sym, Attribute value) {
1907 this.sym = sym;
1908 this.value = value;
1909 }
1910 // implement Annotate.Worker.run()
1911 public void run() {
1912 JavaFileObject previousClassFile = currentClassFile;
1913 try {
1914 // Reset the interim value set earlier in
1915 // attachAnnotationDefault().
1916 sym.defaultValue = null;
1917 currentClassFile = classFile;
1918 sym.defaultValue = deproxy(sym.type.getReturnType(), value);
1919 } finally {
1920 currentClassFile = previousClassFile;
1921 }
1922 }
1923 }
1925 class AnnotationCompleter extends AnnotationDeproxy implements Annotate.Worker {
1926 final Symbol sym;
1927 final List<CompoundAnnotationProxy> l;
1928 final JavaFileObject classFile;
1929 @Override
1930 public String toString() {
1931 return " ClassReader annotate " + sym.owner + "." + sym + " with " + l;
1932 }
1933 AnnotationCompleter(Symbol sym, List<CompoundAnnotationProxy> l) {
1934 this.sym = sym;
1935 this.l = l;
1936 this.classFile = currentClassFile;
1937 }
1938 // implement Annotate.Worker.run()
1939 public void run() {
1940 JavaFileObject previousClassFile = currentClassFile;
1941 try {
1942 currentClassFile = classFile;
1943 List<Attribute.Compound> newList = deproxyCompoundList(l);
1944 if (sym.annotationsPendingCompletion()) {
1945 sym.setDeclarationAttributes(newList);
1946 } else {
1947 sym.appendAttributes(newList);
1948 }
1949 } finally {
1950 currentClassFile = previousClassFile;
1951 }
1952 }
1953 }
1955 class TypeAnnotationCompleter extends AnnotationCompleter {
1957 List<TypeAnnotationProxy> proxies;
1959 TypeAnnotationCompleter(Symbol sym,
1960 List<TypeAnnotationProxy> proxies) {
1961 super(sym, List.<CompoundAnnotationProxy>nil());
1962 this.proxies = proxies;
1963 }
1965 List<Attribute.TypeCompound> deproxyTypeCompoundList(List<TypeAnnotationProxy> proxies) {
1966 ListBuffer<Attribute.TypeCompound> buf = new ListBuffer<>();
1967 for (TypeAnnotationProxy proxy: proxies) {
1968 Attribute.Compound compound = deproxyCompound(proxy.compound);
1969 Attribute.TypeCompound typeCompound = new Attribute.TypeCompound(compound, proxy.position);
1970 buf.add(typeCompound);
1971 }
1972 return buf.toList();
1973 }
1975 @Override
1976 public void run() {
1977 JavaFileObject previousClassFile = currentClassFile;
1978 try {
1979 currentClassFile = classFile;
1980 List<Attribute.TypeCompound> newList = deproxyTypeCompoundList(proxies);
1981 sym.setTypeAttributes(newList.prependList(sym.getRawTypeAttributes()));
1982 } finally {
1983 currentClassFile = previousClassFile;
1984 }
1985 }
1986 }
1989 /************************************************************************
1990 * Reading Symbols
1991 ***********************************************************************/
1993 /** Read a field.
1994 */
1995 VarSymbol readField() {
1996 long flags = adjustFieldFlags(nextChar());
1997 Name name = readName(nextChar());
1998 Type type = readType(nextChar());
1999 VarSymbol v = new VarSymbol(flags, name, type, currentOwner);
2000 readMemberAttrs(v);
2001 return v;
2002 }
2004 /** Read a method.
2005 */
2006 MethodSymbol readMethod() {
2007 long flags = adjustMethodFlags(nextChar());
2008 Name name = readName(nextChar());
2009 Type type = readType(nextChar());
2010 if (currentOwner.isInterface() &&
2011 (flags & ABSTRACT) == 0 && !name.equals(names.clinit)) {
2012 if (majorVersion > Target.JDK1_8.majorVersion ||
2013 (majorVersion == Target.JDK1_8.majorVersion && minorVersion >= Target.JDK1_8.minorVersion)) {
2014 if ((flags & STATIC) == 0) {
2015 currentOwner.flags_field |= DEFAULT;
2016 flags |= DEFAULT | ABSTRACT;
2017 }
2018 } else {
2019 //protect against ill-formed classfiles
2020 throw badClassFile((flags & STATIC) == 0 ? "invalid.default.interface" : "invalid.static.interface",
2021 Integer.toString(majorVersion),
2022 Integer.toString(minorVersion));
2023 }
2024 }
2025 if (name == names.init && currentOwner.hasOuterInstance()) {
2026 // Sometimes anonymous classes don't have an outer
2027 // instance, however, there is no reliable way to tell so
2028 // we never strip this$n
2029 if (!currentOwner.name.isEmpty())
2030 type = new MethodType(adjustMethodParams(flags, type.getParameterTypes()),
2031 type.getReturnType(),
2032 type.getThrownTypes(),
2033 syms.methodClass);
2034 }
2035 MethodSymbol m = new MethodSymbol(flags, name, type, currentOwner);
2036 if (types.isSignaturePolymorphic(m)) {
2037 m.flags_field |= SIGNATURE_POLYMORPHIC;
2038 }
2039 if (saveParameterNames)
2040 initParameterNames(m);
2041 Symbol prevOwner = currentOwner;
2042 currentOwner = m;
2043 try {
2044 readMemberAttrs(m);
2045 } finally {
2046 currentOwner = prevOwner;
2047 }
2048 if (saveParameterNames)
2049 setParameterNames(m, type);
2050 return m;
2051 }
2053 private List<Type> adjustMethodParams(long flags, List<Type> args) {
2054 boolean isVarargs = (flags & VARARGS) != 0;
2055 if (isVarargs) {
2056 Type varargsElem = args.last();
2057 ListBuffer<Type> adjustedArgs = new ListBuffer<>();
2058 for (Type t : args) {
2059 adjustedArgs.append(t != varargsElem ?
2060 t :
2061 ((ArrayType)t).makeVarargs());
2062 }
2063 args = adjustedArgs.toList();
2064 }
2065 return args.tail;
2066 }
2068 /**
2069 * Init the parameter names array.
2070 * Parameter names are currently inferred from the names in the
2071 * LocalVariableTable attributes of a Code attribute.
2072 * (Note: this means parameter names are currently not available for
2073 * methods without a Code attribute.)
2074 * This method initializes an array in which to store the name indexes
2075 * of parameter names found in LocalVariableTable attributes. It is
2076 * slightly supersized to allow for additional slots with a start_pc of 0.
2077 */
2078 void initParameterNames(MethodSymbol sym) {
2079 // make allowance for synthetic parameters.
2080 final int excessSlots = 4;
2081 int expectedParameterSlots =
2082 Code.width(sym.type.getParameterTypes()) + excessSlots;
2083 if (parameterNameIndices == null
2084 || parameterNameIndices.length < expectedParameterSlots) {
2085 parameterNameIndices = new int[expectedParameterSlots];
2086 } else
2087 Arrays.fill(parameterNameIndices, 0);
2088 haveParameterNameIndices = false;
2089 sawMethodParameters = false;
2090 }
2092 /**
2093 * Set the parameter names for a symbol from the name index in the
2094 * parameterNameIndicies array. The type of the symbol may have changed
2095 * while reading the method attributes (see the Signature attribute).
2096 * This may be because of generic information or because anonymous
2097 * synthetic parameters were added. The original type (as read from
2098 * the method descriptor) is used to help guess the existence of
2099 * anonymous synthetic parameters.
2100 * On completion, sym.savedParameter names will either be null (if
2101 * no parameter names were found in the class file) or will be set to a
2102 * list of names, one per entry in sym.type.getParameterTypes, with
2103 * any missing names represented by the empty name.
2104 */
2105 void setParameterNames(MethodSymbol sym, Type jvmType) {
2106 // if no names were found in the class file, there's nothing more to do
2107 if (!haveParameterNameIndices)
2108 return;
2109 // If we get parameter names from MethodParameters, then we
2110 // don't need to skip.
2111 int firstParam = 0;
2112 if (!sawMethodParameters) {
2113 firstParam = ((sym.flags() & STATIC) == 0) ? 1 : 0;
2114 // the code in readMethod may have skipped the first
2115 // parameter when setting up the MethodType. If so, we
2116 // make a corresponding allowance here for the position of
2117 // the first parameter. Note that this assumes the
2118 // skipped parameter has a width of 1 -- i.e. it is not
2119 // a double width type (long or double.)
2120 if (sym.name == names.init && currentOwner.hasOuterInstance()) {
2121 // Sometimes anonymous classes don't have an outer
2122 // instance, however, there is no reliable way to tell so
2123 // we never strip this$n
2124 if (!currentOwner.name.isEmpty())
2125 firstParam += 1;
2126 }
2128 if (sym.type != jvmType) {
2129 // reading the method attributes has caused the
2130 // symbol's type to be changed. (i.e. the Signature
2131 // attribute.) This may happen if there are hidden
2132 // (synthetic) parameters in the descriptor, but not
2133 // in the Signature. The position of these hidden
2134 // parameters is unspecified; for now, assume they are
2135 // at the beginning, and so skip over them. The
2136 // primary case for this is two hidden parameters
2137 // passed into Enum constructors.
2138 int skip = Code.width(jvmType.getParameterTypes())
2139 - Code.width(sym.type.getParameterTypes());
2140 firstParam += skip;
2141 }
2142 }
2143 List<Name> paramNames = List.nil();
2144 int index = firstParam;
2145 for (Type t: sym.type.getParameterTypes()) {
2146 int nameIdx = (index < parameterNameIndices.length
2147 ? parameterNameIndices[index] : 0);
2148 Name name = nameIdx == 0 ? names.empty : readName(nameIdx);
2149 paramNames = paramNames.prepend(name);
2150 index += Code.width(t);
2151 }
2152 sym.savedParameterNames = paramNames.reverse();
2153 }
2155 /**
2156 * skip n bytes
2157 */
2158 void skipBytes(int n) {
2159 bp = bp + n;
2160 }
2162 /** Skip a field or method
2163 */
2164 void skipMember() {
2165 bp = bp + 6;
2166 char ac = nextChar();
2167 for (int i = 0; i < ac; i++) {
2168 bp = bp + 2;
2169 int attrLen = nextInt();
2170 bp = bp + attrLen;
2171 }
2172 }
2174 /** Enter type variables of this classtype and all enclosing ones in
2175 * `typevars'.
2176 */
2177 protected void enterTypevars(Type t) {
2178 if (t.getEnclosingType() != null && t.getEnclosingType().hasTag(CLASS))
2179 enterTypevars(t.getEnclosingType());
2180 for (List<Type> xs = t.getTypeArguments(); xs.nonEmpty(); xs = xs.tail)
2181 typevars.enter(xs.head.tsym);
2182 }
2184 protected void enterTypevars(Symbol sym) {
2185 if (sym.owner.kind == MTH) {
2186 enterTypevars(sym.owner);
2187 enterTypevars(sym.owner.owner);
2188 }
2189 enterTypevars(sym.type);
2190 }
2192 /** Read contents of a given class symbol `c'. Both external and internal
2193 * versions of an inner class are read.
2194 */
2195 void readClass(ClassSymbol c) {
2196 ClassType ct = (ClassType)c.type;
2198 // allocate scope for members
2199 c.members_field = new Scope(c);
2201 // prepare type variable table
2202 typevars = typevars.dup(currentOwner);
2203 if (ct.getEnclosingType().hasTag(CLASS))
2204 enterTypevars(ct.getEnclosingType());
2206 // read flags, or skip if this is an inner class
2207 long flags = adjustClassFlags(nextChar());
2208 if (c.owner.kind == PCK) c.flags_field = flags;
2210 // read own class name and check that it matches
2211 ClassSymbol self = readClassSymbol(nextChar());
2212 if (c != self)
2213 throw badClassFile("class.file.wrong.class",
2214 self.flatname);
2216 // class attributes must be read before class
2217 // skip ahead to read class attributes
2218 int startbp = bp;
2219 nextChar();
2220 char interfaceCount = nextChar();
2221 bp += interfaceCount * 2;
2222 char fieldCount = nextChar();
2223 for (int i = 0; i < fieldCount; i++) skipMember();
2224 char methodCount = nextChar();
2225 for (int i = 0; i < methodCount; i++) skipMember();
2226 readClassAttrs(c);
2228 if (readAllOfClassFile) {
2229 for (int i = 1; i < poolObj.length; i++) readPool(i);
2230 c.pool = new Pool(poolObj.length, poolObj, types);
2231 }
2233 // reset and read rest of classinfo
2234 bp = startbp;
2235 int n = nextChar();
2236 if (ct.supertype_field == null)
2237 ct.supertype_field = (n == 0)
2238 ? Type.noType
2239 : readClassSymbol(n).erasure(types);
2240 n = nextChar();
2241 List<Type> is = List.nil();
2242 for (int i = 0; i < n; i++) {
2243 Type _inter = readClassSymbol(nextChar()).erasure(types);
2244 is = is.prepend(_inter);
2245 }
2246 if (ct.interfaces_field == null)
2247 ct.interfaces_field = is.reverse();
2249 Assert.check(fieldCount == nextChar());
2250 for (int i = 0; i < fieldCount; i++) enterMember(c, readField());
2251 Assert.check(methodCount == nextChar());
2252 for (int i = 0; i < methodCount; i++) enterMember(c, readMethod());
2254 typevars = typevars.leave();
2255 }
2257 /** Read inner class info. For each inner/outer pair allocate a
2258 * member class.
2259 */
2260 void readInnerClasses(ClassSymbol c) {
2261 int n = nextChar();
2262 for (int i = 0; i < n; i++) {
2263 nextChar(); // skip inner class symbol
2264 ClassSymbol outer = readClassSymbol(nextChar());
2265 Name name = readName(nextChar());
2266 if (name == null) name = names.empty;
2267 long flags = adjustClassFlags(nextChar());
2268 if (outer != null) { // we have a member class
2269 if (name == names.empty)
2270 name = names.one;
2271 ClassSymbol member = enterClass(name, outer);
2272 if ((flags & STATIC) == 0) {
2273 ((ClassType)member.type).setEnclosingType(outer.type);
2274 if (member.erasure_field != null)
2275 ((ClassType)member.erasure_field).setEnclosingType(types.erasure(outer.type));
2276 }
2277 if (c == outer) {
2278 member.flags_field = flags;
2279 enterMember(c, member);
2280 }
2281 }
2282 }
2283 }
2285 /** Read a class file.
2286 */
2287 private void readClassFile(ClassSymbol c) throws IOException {
2288 int magic = nextInt();
2289 if (magic != JAVA_MAGIC)
2290 throw badClassFile("illegal.start.of.class.file");
2292 minorVersion = nextChar();
2293 majorVersion = nextChar();
2294 int maxMajor = Target.MAX().majorVersion;
2295 int maxMinor = Target.MAX().minorVersion;
2296 if (majorVersion > maxMajor ||
2297 majorVersion * 1000 + minorVersion <
2298 Target.MIN().majorVersion * 1000 + Target.MIN().minorVersion)
2299 {
2300 if (majorVersion == (maxMajor + 1))
2301 log.warning("big.major.version",
2302 currentClassFile,
2303 majorVersion,
2304 maxMajor);
2305 else
2306 throw badClassFile("wrong.version",
2307 Integer.toString(majorVersion),
2308 Integer.toString(minorVersion),
2309 Integer.toString(maxMajor),
2310 Integer.toString(maxMinor));
2311 }
2312 else if (checkClassFile &&
2313 majorVersion == maxMajor &&
2314 minorVersion > maxMinor)
2315 {
2316 printCCF("found.later.version",
2317 Integer.toString(minorVersion));
2318 }
2319 indexPool();
2320 if (signatureBuffer.length < bp) {
2321 int ns = Integer.highestOneBit(bp) << 1;
2322 signatureBuffer = new byte[ns];
2323 }
2324 readClass(c);
2325 }
2327 /************************************************************************
2328 * Adjusting flags
2329 ***********************************************************************/
2331 long adjustFieldFlags(long flags) {
2332 return flags;
2333 }
2334 long adjustMethodFlags(long flags) {
2335 if ((flags & ACC_BRIDGE) != 0) {
2336 flags &= ~ACC_BRIDGE;
2337 flags |= BRIDGE;
2338 if (!allowGenerics)
2339 flags &= ~SYNTHETIC;
2340 }
2341 if ((flags & ACC_VARARGS) != 0) {
2342 flags &= ~ACC_VARARGS;
2343 flags |= VARARGS;
2344 }
2345 return flags;
2346 }
2347 long adjustClassFlags(long flags) {
2348 return flags & ~ACC_SUPER; // SUPER and SYNCHRONIZED bits overloaded
2349 }
2351 /************************************************************************
2352 * Loading Classes
2353 ***********************************************************************/
2355 /** Define a new class given its name and owner.
2356 */
2357 public ClassSymbol defineClass(Name name, Symbol owner) {
2358 ClassSymbol c = new ClassSymbol(0, name, owner);
2359 if (owner.kind == PCK)
2360 Assert.checkNull(classes.get(c.flatname), c);
2361 c.completer = thisCompleter;
2362 return c;
2363 }
2365 /** Create a new toplevel or member class symbol with given name
2366 * and owner and enter in `classes' unless already there.
2367 */
2368 public ClassSymbol enterClass(Name name, TypeSymbol owner) {
2369 Name flatname = TypeSymbol.formFlatName(name, owner);
2370 ClassSymbol c = classes.get(flatname);
2371 if (c == null) {
2372 c = defineClass(name, owner);
2373 classes.put(flatname, c);
2374 } else if ((c.name != name || c.owner != owner) && owner.kind == TYP && c.owner.kind == PCK) {
2375 // reassign fields of classes that might have been loaded with
2376 // their flat names.
2377 c.owner.members().remove(c);
2378 c.name = name;
2379 c.owner = owner;
2380 c.fullname = ClassSymbol.formFullName(name, owner);
2381 }
2382 return c;
2383 }
2385 /**
2386 * Creates a new toplevel class symbol with given flat name and
2387 * given class (or source) file.
2388 *
2389 * @param flatName a fully qualified binary class name
2390 * @param classFile the class file or compilation unit defining
2391 * the class (may be {@code null})
2392 * @return a newly created class symbol
2393 * @throws AssertionError if the class symbol already exists
2394 */
2395 public ClassSymbol enterClass(Name flatName, JavaFileObject classFile) {
2396 ClassSymbol cs = classes.get(flatName);
2397 if (cs != null) {
2398 String msg = Log.format("%s: completer = %s; class file = %s; source file = %s",
2399 cs.fullname,
2400 cs.completer,
2401 cs.classfile,
2402 cs.sourcefile);
2403 throw new AssertionError(msg);
2404 }
2405 Name packageName = Convert.packagePart(flatName);
2406 PackageSymbol owner = packageName.isEmpty()
2407 ? syms.unnamedPackage
2408 : enterPackage(packageName);
2409 cs = defineClass(Convert.shortName(flatName), owner);
2410 cs.classfile = classFile;
2411 classes.put(flatName, cs);
2412 return cs;
2413 }
2415 /** Create a new member or toplevel class symbol with given flat name
2416 * and enter in `classes' unless already there.
2417 */
2418 public ClassSymbol enterClass(Name flatname) {
2419 ClassSymbol c = classes.get(flatname);
2420 if (c == null)
2421 return enterClass(flatname, (JavaFileObject)null);
2422 else
2423 return c;
2424 }
2426 /** Completion for classes to be loaded. Before a class is loaded
2427 * we make sure its enclosing class (if any) is loaded.
2428 */
2429 private void complete(Symbol sym) throws CompletionFailure {
2430 if (sym.kind == TYP) {
2431 ClassSymbol c = (ClassSymbol)sym;
2432 c.members_field = new Scope.ErrorScope(c); // make sure it's always defined
2433 annotate.enterStart();
2434 try {
2435 completeOwners(c.owner);
2436 completeEnclosing(c);
2437 } finally {
2438 // The flush needs to happen only after annotations
2439 // are filled in.
2440 annotate.enterDoneWithoutFlush();
2441 }
2442 fillIn(c);
2443 } else if (sym.kind == PCK) {
2444 PackageSymbol p = (PackageSymbol)sym;
2445 try {
2446 fillIn(p);
2447 } catch (IOException ex) {
2448 throw new CompletionFailure(sym, ex.getLocalizedMessage()).initCause(ex);
2449 }
2450 }
2451 if (!filling)
2452 annotate.flush(); // finish attaching annotations
2453 }
2455 /** complete up through the enclosing package. */
2456 private void completeOwners(Symbol o) {
2457 if (o.kind != PCK) completeOwners(o.owner);
2458 o.complete();
2459 }
2461 /**
2462 * Tries to complete lexically enclosing classes if c looks like a
2463 * nested class. This is similar to completeOwners but handles
2464 * the situation when a nested class is accessed directly as it is
2465 * possible with the Tree API or javax.lang.model.*.
2466 */
2467 private void completeEnclosing(ClassSymbol c) {
2468 if (c.owner.kind == PCK) {
2469 Symbol owner = c.owner;
2470 for (Name name : Convert.enclosingCandidates(Convert.shortName(c.name))) {
2471 Symbol encl = owner.members().lookup(name).sym;
2472 if (encl == null)
2473 encl = classes.get(TypeSymbol.formFlatName(name, owner));
2474 if (encl != null)
2475 encl.complete();
2476 }
2477 }
2478 }
2480 /** We can only read a single class file at a time; this
2481 * flag keeps track of when we are currently reading a class
2482 * file.
2483 */
2484 private boolean filling = false;
2486 /** Fill in definition of class `c' from corresponding class or
2487 * source file.
2488 */
2489 private void fillIn(ClassSymbol c) {
2490 if (completionFailureName == c.fullname) {
2491 throw new CompletionFailure(c, "user-selected completion failure by class name");
2492 }
2493 currentOwner = c;
2494 warnedAttrs.clear();
2495 JavaFileObject classfile = c.classfile;
2496 if (classfile != null) {
2497 JavaFileObject previousClassFile = currentClassFile;
2498 try {
2499 if (filling) {
2500 Assert.error("Filling " + classfile.toUri() + " during " + previousClassFile);
2501 }
2502 currentClassFile = classfile;
2503 if (verbose) {
2504 log.printVerbose("loading", currentClassFile.toString());
2505 }
2506 if (classfile.getKind() == JavaFileObject.Kind.CLASS) {
2507 filling = true;
2508 try {
2509 bp = 0;
2510 buf = readInputStream(buf, classfile.openInputStream());
2511 readClassFile(c);
2512 if (!missingTypeVariables.isEmpty() && !foundTypeVariables.isEmpty()) {
2513 List<Type> missing = missingTypeVariables;
2514 List<Type> found = foundTypeVariables;
2515 missingTypeVariables = List.nil();
2516 foundTypeVariables = List.nil();
2517 filling = false;
2518 ClassType ct = (ClassType)currentOwner.type;
2519 ct.supertype_field =
2520 types.subst(ct.supertype_field, missing, found);
2521 ct.interfaces_field =
2522 types.subst(ct.interfaces_field, missing, found);
2523 } else if (missingTypeVariables.isEmpty() !=
2524 foundTypeVariables.isEmpty()) {
2525 Name name = missingTypeVariables.head.tsym.name;
2526 throw badClassFile("undecl.type.var", name);
2527 }
2528 } finally {
2529 missingTypeVariables = List.nil();
2530 foundTypeVariables = List.nil();
2531 filling = false;
2532 }
2533 } else {
2534 if (sourceCompleter != null) {
2535 sourceCompleter.complete(c);
2536 } else {
2537 throw new IllegalStateException("Source completer required to read "
2538 + classfile.toUri());
2539 }
2540 }
2541 return;
2542 } catch (IOException ex) {
2543 throw badClassFile("unable.to.access.file", ex.getMessage());
2544 } finally {
2545 currentClassFile = previousClassFile;
2546 }
2547 } else {
2548 JCDiagnostic diag =
2549 diagFactory.fragment("class.file.not.found", c.flatname);
2550 throw
2551 newCompletionFailure(c, diag);
2552 }
2553 }
2554 // where
2555 private static byte[] readInputStream(byte[] buf, InputStream s) throws IOException {
2556 try {
2557 buf = ensureCapacity(buf, s.available());
2558 int r = s.read(buf);
2559 int bp = 0;
2560 while (r != -1) {
2561 bp += r;
2562 buf = ensureCapacity(buf, bp);
2563 r = s.read(buf, bp, buf.length - bp);
2564 }
2565 return buf;
2566 } finally {
2567 try {
2568 s.close();
2569 } catch (IOException e) {
2570 /* Ignore any errors, as this stream may have already
2571 * thrown a related exception which is the one that
2572 * should be reported.
2573 */
2574 }
2575 }
2576 }
2577 /*
2578 * ensureCapacity will increase the buffer as needed, taking note that
2579 * the new buffer will always be greater than the needed and never
2580 * exactly equal to the needed size or bp. If equal then the read (above)
2581 * will infinitely loop as buf.length - bp == 0.
2582 */
2583 private static byte[] ensureCapacity(byte[] buf, int needed) {
2584 if (buf.length <= needed) {
2585 byte[] old = buf;
2586 buf = new byte[Integer.highestOneBit(needed) << 1];
2587 System.arraycopy(old, 0, buf, 0, old.length);
2588 }
2589 return buf;
2590 }
2591 /** Static factory for CompletionFailure objects.
2592 * In practice, only one can be used at a time, so we share one
2593 * to reduce the expense of allocating new exception objects.
2594 */
2595 private CompletionFailure newCompletionFailure(TypeSymbol c,
2596 JCDiagnostic diag) {
2597 if (!cacheCompletionFailure) {
2598 // log.warning("proc.messager",
2599 // Log.getLocalizedString("class.file.not.found", c.flatname));
2600 // c.debug.printStackTrace();
2601 return new CompletionFailure(c, diag);
2602 } else {
2603 CompletionFailure result = cachedCompletionFailure;
2604 result.sym = c;
2605 result.diag = diag;
2606 return result;
2607 }
2608 }
2609 private CompletionFailure cachedCompletionFailure =
2610 new CompletionFailure(null, (JCDiagnostic) null);
2611 {
2612 cachedCompletionFailure.setStackTrace(new StackTraceElement[0]);
2613 }
2615 /** Load a toplevel class with given fully qualified name
2616 * The class is entered into `classes' only if load was successful.
2617 */
2618 public ClassSymbol loadClass(Name flatname) throws CompletionFailure {
2619 boolean absent = classes.get(flatname) == null;
2620 ClassSymbol c = enterClass(flatname);
2621 if (c.members_field == null && c.completer != null) {
2622 try {
2623 c.complete();
2624 } catch (CompletionFailure ex) {
2625 if (absent) classes.remove(flatname);
2626 throw ex;
2627 }
2628 }
2629 return c;
2630 }
2632 /************************************************************************
2633 * Loading Packages
2634 ***********************************************************************/
2636 /** Check to see if a package exists, given its fully qualified name.
2637 */
2638 public boolean packageExists(Name fullname) {
2639 return enterPackage(fullname).exists();
2640 }
2642 /** Make a package, given its fully qualified name.
2643 */
2644 public PackageSymbol enterPackage(Name fullname) {
2645 PackageSymbol p = packages.get(fullname);
2646 if (p == null) {
2647 Assert.check(!fullname.isEmpty(), "rootPackage missing!");
2648 p = new PackageSymbol(
2649 Convert.shortName(fullname),
2650 enterPackage(Convert.packagePart(fullname)));
2651 p.completer = thisCompleter;
2652 packages.put(fullname, p);
2653 }
2654 return p;
2655 }
2657 /** Make a package, given its unqualified name and enclosing package.
2658 */
2659 public PackageSymbol enterPackage(Name name, PackageSymbol owner) {
2660 return enterPackage(TypeSymbol.formFullName(name, owner));
2661 }
2663 /** Include class corresponding to given class file in package,
2664 * unless (1) we already have one the same kind (.class or .java), or
2665 * (2) we have one of the other kind, and the given class file
2666 * is older.
2667 */
2668 protected void includeClassFile(PackageSymbol p, JavaFileObject file) {
2669 if ((p.flags_field & EXISTS) == 0)
2670 for (Symbol q = p; q != null && q.kind == PCK; q = q.owner)
2671 q.flags_field |= EXISTS;
2672 JavaFileObject.Kind kind = file.getKind();
2673 int seen;
2674 if (kind == JavaFileObject.Kind.CLASS)
2675 seen = CLASS_SEEN;
2676 else
2677 seen = SOURCE_SEEN;
2678 String binaryName = fileManager.inferBinaryName(currentLoc, file);
2679 int lastDot = binaryName.lastIndexOf(".");
2680 Name classname = names.fromString(binaryName.substring(lastDot + 1));
2681 boolean isPkgInfo = classname == names.package_info;
2682 ClassSymbol c = isPkgInfo
2683 ? p.package_info
2684 : (ClassSymbol) p.members_field.lookup(classname).sym;
2685 if (c == null) {
2686 c = enterClass(classname, p);
2687 if (c.classfile == null) // only update the file if's it's newly created
2688 c.classfile = file;
2689 if (isPkgInfo) {
2690 p.package_info = c;
2691 } else {
2692 if (c.owner == p) // it might be an inner class
2693 p.members_field.enter(c);
2694 }
2695 } else if (c.classfile != null && (c.flags_field & seen) == 0) {
2696 // if c.classfile == null, we are currently compiling this class
2697 // and no further action is necessary.
2698 // if (c.flags_field & seen) != 0, we have already encountered
2699 // a file of the same kind; again no further action is necessary.
2700 if ((c.flags_field & (CLASS_SEEN | SOURCE_SEEN)) != 0)
2701 c.classfile = preferredFileObject(file, c.classfile);
2702 }
2703 c.flags_field |= seen;
2704 }
2706 /** Implement policy to choose to derive information from a source
2707 * file or a class file when both are present. May be overridden
2708 * by subclasses.
2709 */
2710 protected JavaFileObject preferredFileObject(JavaFileObject a,
2711 JavaFileObject b) {
2713 if (preferSource)
2714 return (a.getKind() == JavaFileObject.Kind.SOURCE) ? a : b;
2715 else {
2716 long adate = a.getLastModified();
2717 long bdate = b.getLastModified();
2718 // 6449326: policy for bad lastModifiedTime in ClassReader
2719 //assert adate >= 0 && bdate >= 0;
2720 return (adate > bdate) ? a : b;
2721 }
2722 }
2724 /**
2725 * specifies types of files to be read when filling in a package symbol
2726 */
2727 protected EnumSet<JavaFileObject.Kind> getPackageFileKinds() {
2728 return EnumSet.of(JavaFileObject.Kind.CLASS, JavaFileObject.Kind.SOURCE);
2729 }
2731 /**
2732 * this is used to support javadoc
2733 */
2734 protected void extraFileActions(PackageSymbol pack, JavaFileObject fe) {
2735 }
2737 protected Location currentLoc; // FIXME
2739 private boolean verbosePath = true;
2741 /** Load directory of package into members scope.
2742 */
2743 private void fillIn(PackageSymbol p) throws IOException {
2744 if (p.members_field == null) p.members_field = new Scope(p);
2745 String packageName = p.fullname.toString();
2747 Set<JavaFileObject.Kind> kinds = getPackageFileKinds();
2749 fillIn(p, PLATFORM_CLASS_PATH,
2750 fileManager.list(PLATFORM_CLASS_PATH,
2751 packageName,
2752 EnumSet.of(JavaFileObject.Kind.CLASS),
2753 false));
2755 Set<JavaFileObject.Kind> classKinds = EnumSet.copyOf(kinds);
2756 classKinds.remove(JavaFileObject.Kind.SOURCE);
2757 boolean wantClassFiles = !classKinds.isEmpty();
2759 Set<JavaFileObject.Kind> sourceKinds = EnumSet.copyOf(kinds);
2760 sourceKinds.remove(JavaFileObject.Kind.CLASS);
2761 boolean wantSourceFiles = !sourceKinds.isEmpty();
2763 boolean haveSourcePath = fileManager.hasLocation(SOURCE_PATH);
2765 if (verbose && verbosePath) {
2766 if (fileManager instanceof StandardJavaFileManager) {
2767 StandardJavaFileManager fm = (StandardJavaFileManager)fileManager;
2768 if (haveSourcePath && wantSourceFiles) {
2769 List<File> path = List.nil();
2770 for (File file : fm.getLocation(SOURCE_PATH)) {
2771 path = path.prepend(file);
2772 }
2773 log.printVerbose("sourcepath", path.reverse().toString());
2774 } else if (wantSourceFiles) {
2775 List<File> path = List.nil();
2776 for (File file : fm.getLocation(CLASS_PATH)) {
2777 path = path.prepend(file);
2778 }
2779 log.printVerbose("sourcepath", path.reverse().toString());
2780 }
2781 if (wantClassFiles) {
2782 List<File> path = List.nil();
2783 for (File file : fm.getLocation(PLATFORM_CLASS_PATH)) {
2784 path = path.prepend(file);
2785 }
2786 for (File file : fm.getLocation(CLASS_PATH)) {
2787 path = path.prepend(file);
2788 }
2789 log.printVerbose("classpath", path.reverse().toString());
2790 }
2791 }
2792 }
2794 if (wantSourceFiles && !haveSourcePath) {
2795 fillIn(p, CLASS_PATH,
2796 fileManager.list(CLASS_PATH,
2797 packageName,
2798 kinds,
2799 false));
2800 } else {
2801 if (wantClassFiles)
2802 fillIn(p, CLASS_PATH,
2803 fileManager.list(CLASS_PATH,
2804 packageName,
2805 classKinds,
2806 false));
2807 if (wantSourceFiles)
2808 fillIn(p, SOURCE_PATH,
2809 fileManager.list(SOURCE_PATH,
2810 packageName,
2811 sourceKinds,
2812 false));
2813 }
2814 verbosePath = false;
2815 }
2816 // where
2817 private void fillIn(PackageSymbol p,
2818 Location location,
2819 Iterable<JavaFileObject> files)
2820 {
2821 currentLoc = location;
2822 for (JavaFileObject fo : files) {
2823 switch (fo.getKind()) {
2824 case CLASS:
2825 case SOURCE: {
2826 // TODO pass binaryName to includeClassFile
2827 String binaryName = fileManager.inferBinaryName(currentLoc, fo);
2828 String simpleName = binaryName.substring(binaryName.lastIndexOf(".") + 1);
2829 if (SourceVersion.isIdentifier(simpleName) ||
2830 simpleName.equals("package-info"))
2831 includeClassFile(p, fo);
2832 break;
2833 }
2834 default:
2835 extraFileActions(p, fo);
2836 }
2837 }
2838 }
2840 /** Output for "-checkclassfile" option.
2841 * @param key The key to look up the correct internationalized string.
2842 * @param arg An argument for substitution into the output string.
2843 */
2844 private void printCCF(String key, Object arg) {
2845 log.printLines(key, arg);
2846 }
2849 public interface SourceCompleter {
2850 void complete(ClassSymbol sym)
2851 throws CompletionFailure;
2852 }
2854 /**
2855 * A subclass of JavaFileObject for the sourcefile attribute found in a classfile.
2856 * The attribute is only the last component of the original filename, so is unlikely
2857 * to be valid as is, so operations other than those to access the name throw
2858 * UnsupportedOperationException
2859 */
2860 private static class SourceFileObject extends BaseFileObject {
2862 /** The file's name.
2863 */
2864 private Name name;
2865 private Name flatname;
2867 public SourceFileObject(Name name, Name flatname) {
2868 super(null); // no file manager; never referenced for this file object
2869 this.name = name;
2870 this.flatname = flatname;
2871 }
2873 @Override
2874 public URI toUri() {
2875 try {
2876 return new URI(null, name.toString(), null);
2877 } catch (URISyntaxException e) {
2878 throw new CannotCreateUriError(name.toString(), e);
2879 }
2880 }
2882 @Override
2883 public String getName() {
2884 return name.toString();
2885 }
2887 @Override
2888 public String getShortName() {
2889 return getName();
2890 }
2892 @Override
2893 public JavaFileObject.Kind getKind() {
2894 return getKind(getName());
2895 }
2897 @Override
2898 public InputStream openInputStream() {
2899 throw new UnsupportedOperationException();
2900 }
2902 @Override
2903 public OutputStream openOutputStream() {
2904 throw new UnsupportedOperationException();
2905 }
2907 @Override
2908 public CharBuffer getCharContent(boolean ignoreEncodingErrors) {
2909 throw new UnsupportedOperationException();
2910 }
2912 @Override
2913 public Reader openReader(boolean ignoreEncodingErrors) {
2914 throw new UnsupportedOperationException();
2915 }
2917 @Override
2918 public Writer openWriter() {
2919 throw new UnsupportedOperationException();
2920 }
2922 @Override
2923 public long getLastModified() {
2924 throw new UnsupportedOperationException();
2925 }
2927 @Override
2928 public boolean delete() {
2929 throw new UnsupportedOperationException();
2930 }
2932 @Override
2933 protected String inferBinaryName(Iterable<? extends File> path) {
2934 return flatname.toString();
2935 }
2937 @Override
2938 public boolean isNameCompatible(String simpleName, JavaFileObject.Kind kind) {
2939 return true; // fail-safe mode
2940 }
2942 /**
2943 * Check if two file objects are equal.
2944 * SourceFileObjects are just placeholder objects for the value of a
2945 * SourceFile attribute, and do not directly represent specific files.
2946 * Two SourceFileObjects are equal if their names are equal.
2947 */
2948 @Override
2949 public boolean equals(Object other) {
2950 if (this == other)
2951 return true;
2953 if (!(other instanceof SourceFileObject))
2954 return false;
2956 SourceFileObject o = (SourceFileObject) other;
2957 return name.equals(o.name);
2958 }
2960 @Override
2961 public int hashCode() {
2962 return name.hashCode();
2963 }
2964 }
2965 }
