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