| /* |
| * 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.reflectiveObjects; |
| |
| import java.lang.reflect.Type; |
| import sun.reflect.generics.factory.GenericsFactory; |
| import sun.reflect.generics.tree.FieldTypeSignature; |
| import sun.reflect.generics.visitor.Reifier; |
| |
| |
| /** |
| * Common infrastructure for things that lazily generate reflective generics |
| * objects. |
| * <p> In all these cases, one needs produce a visitor that will, on demand, |
| * traverse the stored AST(s) and reify them into reflective objects. |
| * The visitor needs to be initialized with a factory, which will be |
| * provided when the instance is initialized. |
| * The factory should be cached. |
| * |
| */ |
| public abstract class LazyReflectiveObjectGenerator { |
| private final GenericsFactory factory; // cached factory |
| |
| protected LazyReflectiveObjectGenerator(GenericsFactory f) { |
| factory = f; |
| } |
| |
| // accessor for factory |
| private GenericsFactory getFactory() { |
| return factory; |
| } |
| |
| // produce a reifying visitor (could this be typed as a TypeTreeVisitor? |
| protected Reifier getReifier(){return Reifier.make(getFactory());} |
| |
| Type[] reifyBounds(FieldTypeSignature[] boundASTs) { |
| final int length = boundASTs.length; |
| final Type[] bounds = new Type[length]; |
| // iterate over bound trees, reifying each in turn |
| for (int i = 0; i < length; i++) { |
| Reifier r = getReifier(); |
| boundASTs[i].accept(r); |
| bounds[i] = r.getResult(); |
| } |
| return bounds; |
| } |
| |
| } |