1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/src/share/classes/com/sun/tools/javac/api/JavacScope.java Wed Apr 27 01:34:52 2016 +0800
1.3 @@ -0,0 +1,113 @@
1.4 +/*
1.5 + * Copyright (c) 2006, 2008, Oracle and/or its affiliates. All rights reserved.
1.6 + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
1.7 + *
1.8 + * This code is free software; you can redistribute it and/or modify it
1.9 + * under the terms of the GNU General Public License version 2 only, as
1.10 + * published by the Free Software Foundation. Oracle designates this
1.11 + * particular file as subject to the "Classpath" exception as provided
1.12 + * by Oracle in the LICENSE file that accompanied this code.
1.13 + *
1.14 + * This code is distributed in the hope that it will be useful, but WITHOUT
1.15 + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
1.16 + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
1.17 + * version 2 for more details (a copy is included in the LICENSE file that
1.18 + * accompanied this code).
1.19 + *
1.20 + * You should have received a copy of the GNU General Public License version
1.21 + * 2 along with this work; if not, write to the Free Software Foundation,
1.22 + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
1.23 + *
1.24 + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
1.25 + * or visit www.oracle.com if you need additional information or have any
1.26 + * questions.
1.27 + */
1.28 +
1.29 +package com.sun.tools.javac.api;
1.30 +
1.31 +
1.32 +import javax.lang.model.element.Element;
1.33 +import javax.lang.model.element.ExecutableElement;
1.34 +import javax.lang.model.element.TypeElement;
1.35 +
1.36 +import com.sun.tools.javac.comp.AttrContext;
1.37 +import com.sun.tools.javac.comp.Env;
1.38 +
1.39 +
1.40 +
1.41 +/**
1.42 + * Provides an implementation of Scope.
1.43 + *
1.44 + * <p><b>This is NOT part of any supported API.
1.45 + * If you write code that depends on this, you do so at your own
1.46 + * risk. This code and its internal interfaces are subject to change
1.47 + * or deletion without notice.</b></p>
1.48 + *
1.49 + * @author Jonathan Gibbons;
1.50 + */
1.51 +public class JavacScope implements com.sun.source.tree.Scope {
1.52 + protected final Env<AttrContext> env;
1.53 +
1.54 + /** Creates a new instance of JavacScope */
1.55 + JavacScope(Env<AttrContext> env) {
1.56 + env.getClass(); // null-check
1.57 + this.env = env;
1.58 + }
1.59 +
1.60 + public JavacScope getEnclosingScope() {
1.61 + if (env.outer != null && env.outer != env)
1.62 + return new JavacScope(env.outer);
1.63 + else {
1.64 + // synthesize an outermost "star-import" scope
1.65 + return new JavacScope(env) {
1.66 + public boolean isStarImportScope() {
1.67 + return true;
1.68 + }
1.69 + public JavacScope getEnclosingScope() {
1.70 + return null;
1.71 + }
1.72 + public Iterable<? extends Element> getLocalElements() {
1.73 + return env.toplevel.starImportScope.getElements();
1.74 + }
1.75 + };
1.76 + }
1.77 + }
1.78 +
1.79 + public TypeElement getEnclosingClass() {
1.80 + // hide the dummy class that javac uses to enclose the top level declarations
1.81 + return (env.outer == null || env.outer == env ? null : env.enclClass.sym);
1.82 + }
1.83 +
1.84 + public ExecutableElement getEnclosingMethod() {
1.85 + return (env.enclMethod == null ? null : env.enclMethod.sym);
1.86 + }
1.87 +
1.88 + public Iterable<? extends Element> getLocalElements() {
1.89 + return env.info.getLocalElements();
1.90 + }
1.91 +
1.92 + public Env<AttrContext> getEnv() {
1.93 + return env;
1.94 + }
1.95 +
1.96 + public boolean isStarImportScope() {
1.97 + return false;
1.98 + }
1.99 +
1.100 + public boolean equals(Object other) {
1.101 + if (other instanceof JavacScope) {
1.102 + JavacScope s = (JavacScope) other;
1.103 + return (env.equals(s.env)
1.104 + && isStarImportScope() == s.isStarImportScope());
1.105 + } else
1.106 + return false;
1.107 + }
1.108 +
1.109 + public int hashCode() {
1.110 + return env.hashCode() + (isStarImportScope() ? 1 : 0);
1.111 + }
1.112 +
1.113 + public String toString() {
1.114 + return "JavacScope[env=" + env + ",starImport=" + isStarImportScope() + "]";
1.115 + }
1.116 +}
