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/*
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* Copyright (c) 2006, 2008, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation. Oracle designates this
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* particular file as subject to the "Classpath" exception as provided
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* by Oracle in the LICENSE file that accompanied this code.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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package com.sun.tools.javac.api;
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import javax.lang.model.element.Element;
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import javax.lang.model.element.ExecutableElement;
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import javax.lang.model.element.TypeElement;
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import com.sun.tools.javac.comp.AttrContext;
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import com.sun.tools.javac.comp.Env;
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/**
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* Provides an implementation of Scope.
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*
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* <p><b>This is NOT part of any API supported by Sun Microsystems.
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* If you write code that depends on this, you do so at your own
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* risk. This code and its internal interfaces are subject to change
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* or deletion without notice.</b></p>
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*
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* @author Jonathan Gibbons;
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*/
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public class JavacScope implements com.sun.source.tree.Scope {
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protected final Env<AttrContext> env;
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/** Creates a new instance of JavacScope */
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JavacScope(Env<AttrContext> env) {
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env.getClass(); // null-check
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this.env = env;
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}
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public JavacScope getEnclosingScope() {
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if (env.outer != null && env.outer != env)
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return new JavacScope(env.outer);
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else {
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// synthesize an outermost "star-import" scope
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return new JavacScope(env) {
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public boolean isStarImportScope() {
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return true;
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}
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public JavacScope getEnclosingScope() {
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return null;
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}
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public Iterable<? extends Element> getLocalElements() {
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return env.toplevel.starImportScope.getElements();
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}
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};
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}
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}
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public TypeElement getEnclosingClass() {
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// hide the dummy class that javac uses to enclose the top level declarations
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return (env.outer == null || env.outer == env ? null : env.enclClass.sym);
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}
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public ExecutableElement getEnclosingMethod() {
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return (env.enclMethod == null ? null : env.enclMethod.sym);
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}
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public Iterable<? extends Element> getLocalElements() {
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return env.info.getLocalElements();
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}
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public Env<AttrContext> getEnv() {
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return env;
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}
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public boolean isStarImportScope() {
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return false;
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}
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public boolean equals(Object other) {
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if (other instanceof JavacScope) {
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JavacScope s = (JavacScope) other;
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return (env.equals(s.env)
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&& isStarImportScope() == s.isStarImportScope());
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} else
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return false;
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}
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public int hashCode() {
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return env.hashCode() + (isStarImportScope() ? 1 : 0);
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}
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public String toString() {
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return "JavacScope[env=" + env + ",starImport=" + isStarImportScope() + "]";
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}
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}
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