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