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