1 | /* |
2 | * Copyright 2006 Sun Microsystems, Inc. All Rights Reserved. |
3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 | * |
5 | * This code is free software; you can redistribute it and/or modify it |
6 | * under the terms of the GNU General Public License version 2 only, as |
7 | * published by the Free Software Foundation. Sun designates this |
8 | * particular file as subject to the "Classpath" exception as provided |
9 | * by Sun in the LICENSE file that accompanied this code. |
10 | * |
11 | * This code is distributed in the hope that it will be useful, but WITHOUT |
12 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
13 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
14 | * version 2 for more details (a copy is included in the LICENSE file that |
15 | * accompanied this code). |
16 | * |
17 | * You should have received a copy of the GNU General Public License version |
18 | * 2 along with this work; if not, write to the Free Software Foundation, |
19 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
20 | * |
21 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
22 | * CA 95054 USA or visit www.sun.com if you need additional information or |
23 | * have any questions. |
24 | */ |
25 | |
26 | package com.sun.tools.javac.api; |
27 | |
28 | import java.io.IOException; |
29 | import java.lang.ref.SoftReference; |
30 | import java.util.Iterator; |
31 | |
32 | import javax.lang.model.element.Element; |
33 | import javax.lang.model.element.ExecutableElement; |
34 | import javax.lang.model.element.TypeElement; |
35 | import javax.tools.JavaFileObject; |
36 | |
37 | import com.sun.source.tree.Tree; |
38 | import com.sun.source.util.SourcePositions; |
39 | import com.sun.source.util.TreePath; |
40 | import com.sun.source.util.Trees; |
41 | import com.sun.tools.javac.code.Scope; |
42 | import com.sun.tools.javac.code.Symbol.ClassSymbol; |
43 | import com.sun.tools.javac.comp.Attr; |
44 | import com.sun.tools.javac.comp.AttrContext; |
45 | import com.sun.tools.javac.comp.Enter; |
46 | import com.sun.tools.javac.comp.Env; |
47 | import com.sun.tools.javac.comp.MemberEnter; |
48 | import com.sun.tools.javac.comp.Resolve; |
49 | import com.sun.tools.javac.tree.JCTree.JCClassDecl; |
50 | import com.sun.tools.javac.tree.JCTree.JCCompilationUnit; |
51 | import com.sun.tools.javac.tree.JCTree.JCExpression; |
52 | import com.sun.tools.javac.tree.JCTree.JCMethodDecl; |
53 | import com.sun.tools.javac.tree.JCTree.JCVariableDecl; |
54 | import com.sun.tools.javac.tree.JCTree; |
55 | import com.sun.tools.javac.tree.TreeCopier; |
56 | import com.sun.tools.javac.tree.TreeInfo; |
57 | import com.sun.tools.javac.tree.TreeMaker; |
58 | import com.sun.tools.javac.util.Context; |
59 | import com.sun.tools.javac.util.List; |
60 | import com.sun.tools.javac.util.Log; |
61 | |
62 | import static com.sun.source.tree.Tree.Kind.*; |
63 | |
64 | |
65 | /** |
66 | * Provides an implementation of Scope. |
67 | * |
68 | * <p><b>This is NOT part of any API supported by Sun Microsystems. |
69 | * If you write code that depends on this, you do so at your own |
70 | * risk. This code and its internal interfaces are subject to change |
71 | * or deletion without notice.</b></p> |
72 | * |
73 | * @author Jonathan Gibbons; |
74 | */ |
75 | public class JavacScope implements com.sun.source.tree.Scope { |
76 | protected final Env<AttrContext> env; |
77 | |
78 | /** Creates a new instance of JavacScope */ |
79 | JavacScope(Env<AttrContext> env) { |
80 | env.getClass(); // null-check |
81 | this.env = env; |
82 | } |
83 | |
84 | public JavacScope getEnclosingScope() { |
85 | if (env.outer != null && env.outer != env) |
86 | return new JavacScope(env.outer); |
87 | else { |
88 | // synthesize an outermost "star-import" scope |
89 | return new JavacScope(env) { |
90 | public boolean isStarImportScope() { |
91 | return true; |
92 | } |
93 | public JavacScope getEnclosingScope() { |
94 | return null; |
95 | } |
96 | public Iterable<? extends Element> getLocalElements() { |
97 | return env.toplevel.starImportScope.getElements(); |
98 | } |
99 | }; |
100 | } |
101 | } |
102 | |
103 | public TypeElement getEnclosingClass() { |
104 | // hide the dummy class that javac uses to enclose the top level declarations |
105 | return (env.outer == null || env.outer == env ? null : env.enclClass.sym); |
106 | } |
107 | |
108 | public ExecutableElement getEnclosingMethod() { |
109 | return (env.enclMethod == null ? null : env.enclMethod.sym); |
110 | } |
111 | |
112 | public Iterable<? extends Element> getLocalElements() { |
113 | return env.info.getLocalElements(); |
114 | } |
115 | |
116 | public Env<AttrContext> getEnv() { |
117 | return env; |
118 | } |
119 | |
120 | public boolean isStarImportScope() { |
121 | return false; |
122 | } |
123 | |
124 | public boolean equals(Object other) { |
125 | if (other instanceof JavacScope) { |
126 | JavacScope s = (JavacScope) other; |
127 | return (env.equals(s.env) |
128 | && isStarImportScope() == s.isStarImportScope()); |
129 | } else |
130 | return false; |
131 | } |
132 | |
133 | public int hashCode() { |
134 | return env.hashCode() + (isStarImportScope() ? 1 : 0); |
135 | } |
136 | |
137 | public String toString() { |
138 | return "JavacScope[env=" + env + ",starImport=" + isStarImportScope() + "]"; |
139 | } |
140 | } |