Thu, 02 Oct 2008 19:58:40 -0700
6754988: Update copyright year
Summary: Update for files that have been modified starting July 2008
Reviewed-by: ohair, tbell
1 /*
2 * Copyright 2004-2008 Sun Microsystems, Inc. All Rights Reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. Sun designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Sun in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
22 * CA 95054 USA or visit www.sun.com if you need additional information or
23 * have any questions.
24 */
26 package com.sun.tools.apt.mirror;
29 import com.sun.tools.apt.mirror.declaration.DeclarationMaker;
30 import com.sun.tools.apt.mirror.type.TypeMaker;
31 import com.sun.tools.javac.code.*;
32 import com.sun.tools.javac.code.Symbol.CompletionFailure;
33 import com.sun.tools.javac.comp.Attr;
34 import com.sun.tools.javac.comp.Enter;
35 import com.sun.tools.javac.util.Context;
36 import com.sun.tools.javac.util.Names;
39 /**
40 * The environment for a run of apt.
41 */
43 public class AptEnv {
45 public Names names; // javac's name table
46 public Symtab symtab; // javac's predefined symbols
47 public Types jctypes; // javac's type utilities
48 public Enter enter; // javac's enter phase
49 public Attr attr; // javac's attr phase (to evaluate
50 // constant initializers)
51 public TypeMaker typeMaker; // apt's internal type utilities
52 public DeclarationMaker declMaker; // apt's internal declaration utilities
55 private static final Context.Key<AptEnv> aptEnvKey =
56 new Context.Key<AptEnv>();
58 public static AptEnv instance(Context context) {
59 AptEnv instance = context.get(aptEnvKey);
60 if (instance == null) {
61 instance = new AptEnv(context);
62 }
63 return instance;
64 }
66 private AptEnv(Context context) {
67 context.put(aptEnvKey, this);
69 names = Names.instance(context);
70 symtab = Symtab.instance(context);
71 jctypes = Types.instance(context);
72 enter = Enter.instance(context);
73 attr = Attr.instance(context);
74 typeMaker = TypeMaker.instance(context);
75 declMaker = DeclarationMaker.instance(context);
76 }
79 /**
80 * Does a symbol have a given flag? Forces symbol completion.
81 */
82 public static boolean hasFlag(Symbol sym, long flag) {
83 return (getFlags(sym) & flag) != 0;
84 }
86 /**
87 * Returns a symbol's flags. Forces completion.
88 */
89 public static long getFlags(Symbol sym) {
90 complete(sym);
91 return sym.flags();
92 }
94 /**
95 * Completes a symbol, ignoring completion failures.
96 */
97 private static void complete(Symbol sym) {
98 while (true) {
99 try {
100 sym.complete();
101 return;
102 } catch (CompletionFailure e) {
103 // Should never see two in a row, but loop just to be sure.
104 }
105 }
106 }
107 }