/*
* Copyright (c) 2003, 2004, 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 sun.reflect.generics.scope;
import java.lang.reflect.Constructor;
import java.lang.reflect.Method;
/**
* This class represents the scope containing the type variables of
* a class.
*/
public class ClassScope extends AbstractScope<Class<?>> implements Scope {
// constructor is private to enforce use of factory method
private ClassScope(Class<?> c){
super(c);
}
/**
* Overrides the abstract method in the superclass.
* @return the enclosing scope
*/
protected Scope computeEnclosingScope() {
Class<?> receiver = getRecvr();
Method m = receiver.getEnclosingMethod();
if (m != null)
// Receiver is a local or anonymous class enclosed in a
// method.
return MethodScope.make(m);
Constructor<?> cnstr = receiver.getEnclosingConstructor();
if (cnstr != null)
// Receiver is a local or anonymous class enclosed in a
// constructor.
return ConstructorScope.make(cnstr);
Class<?> c = receiver.getEnclosingClass();
// if there is a declaring class, recvr is a member class
// and its enclosing scope is that of the declaring class
if (c != null)
// Receiver is a local class, an anonymous class, or a
// member class (static or not).
return ClassScope.make(c);
// otherwise, recvr is a top level class, and it has no real
// enclosing scope.
return DummyScope.make();
}
/**
* Factory method. Takes a <tt>Class</tt> object and creates a
* scope for it.
* @param c - a Class whose scope we want to obtain
* @return The type-variable scope for the class c
*/
public static ClassScope make(Class<?> c) { return new ClassScope(c);}
}