/*
* Copyright (c) 2003, 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.repository;
import java.lang.reflect.Type;
import sun.reflect.generics.factory.GenericsFactory;
import sun.reflect.generics.visitor.Reifier;
/**
* This class represents the generic type information for a method.
* The code is not dependent on a particular reflective implementation.
* It is designed to be used unchanged by at least core reflection and JDI.
*/
public class MethodRepository extends ConstructorRepository {
private Type returnType; // caches the generic return type info
// private, to enforce use of static factory
private MethodRepository(String rawSig, GenericsFactory f) {
super(rawSig, f);
}
/**
* Static factory method.
* @param rawSig - the generic signature of the reflective object
* that this repository is servicing
* @param f - a factory that will provide instances of reflective
* objects when this repository converts its AST
* @return a <tt>MethodRepository</tt> that manages the generic type
* information represented in the signature <tt>rawSig</tt>
*/
public static MethodRepository make(String rawSig, GenericsFactory f) {
return new MethodRepository(rawSig, f);
}
// public API
public Type getReturnType() {
if (returnType == null) { // lazily initialize return type
Reifier r = getReifier(); // obtain visitor
// Extract return type subtree from AST and reify
getTree().getReturnType().accept(r);
// extract result from visitor and cache it
returnType = r.getResult();
}
return returnType; // return cached result
}
}