Tue, 25 Sep 2012 13:11:05 -0700
7196464: upgrade JavaCompiler.shouldStopPolicy to accomodate policies in face of error and no error
Reviewed-by: mcimadamore
1 /*
2 * Copyright (c) 2006, 2008, 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.api;
29 import javax.lang.model.element.Element;
30 import javax.lang.model.element.ExecutableElement;
31 import javax.lang.model.element.TypeElement;
33 import com.sun.tools.javac.comp.AttrContext;
34 import com.sun.tools.javac.comp.Env;
38 /**
39 * Provides an implementation of Scope.
40 *
41 * <p><b>This is NOT part of any supported API.
42 * If you write code that depends on this, you do so at your own
43 * risk. This code and its internal interfaces are subject to change
44 * or deletion without notice.</b></p>
45 *
46 * @author Jonathan Gibbons;
47 */
48 public class JavacScope implements com.sun.source.tree.Scope {
49 protected final Env<AttrContext> env;
51 /** Creates a new instance of JavacScope */
52 JavacScope(Env<AttrContext> env) {
53 env.getClass(); // null-check
54 this.env = env;
55 }
57 public JavacScope getEnclosingScope() {
58 if (env.outer != null && env.outer != env)
59 return new JavacScope(env.outer);
60 else {
61 // synthesize an outermost "star-import" scope
62 return new JavacScope(env) {
63 public boolean isStarImportScope() {
64 return true;
65 }
66 public JavacScope getEnclosingScope() {
67 return null;
68 }
69 public Iterable<? extends Element> getLocalElements() {
70 return env.toplevel.starImportScope.getElements();
71 }
72 };
73 }
74 }
76 public TypeElement getEnclosingClass() {
77 // hide the dummy class that javac uses to enclose the top level declarations
78 return (env.outer == null || env.outer == env ? null : env.enclClass.sym);
79 }
81 public ExecutableElement getEnclosingMethod() {
82 return (env.enclMethod == null ? null : env.enclMethod.sym);
83 }
85 public Iterable<? extends Element> getLocalElements() {
86 return env.info.getLocalElements();
87 }
89 public Env<AttrContext> getEnv() {
90 return env;
91 }
93 public boolean isStarImportScope() {
94 return false;
95 }
97 public boolean equals(Object other) {
98 if (other instanceof JavacScope) {
99 JavacScope s = (JavacScope) other;
100 return (env.equals(s.env)
101 && isStarImportScope() == s.isStarImportScope());
102 } else
103 return false;
104 }
106 public int hashCode() {
107 return env.hashCode() + (isStarImportScope() ? 1 : 0);
108 }
110 public String toString() {
111 return "JavacScope[env=" + env + ",starImport=" + isStarImportScope() + "]";
112 }
113 }