/* * 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 * or visit www.oracle.com if you need additional information or have any * questions. */ 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    }  }