| /* |
| * Copyright (c) 2011, 2016, 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. |
| * |
| * 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 org.graalvm.compiler.graph.iterators; |
| |
| import java.util.Iterator; |
| |
| import org.graalvm.compiler.graph.Node; |
| |
| public class FilteredNodeIterable<T extends Node> implements NodeIterable<T> { |
| |
| protected final NodeIterable<T> nodeIterable; |
| protected NodePredicate predicate = NodePredicates.alwaysTrue(); |
| |
| public FilteredNodeIterable(NodeIterable<T> nodeIterable) { |
| this.nodeIterable = nodeIterable; |
| } |
| |
| public FilteredNodeIterable<T> and(NodePredicate nodePredicate) { |
| this.predicate = this.predicate.and(nodePredicate); |
| return this; |
| } |
| |
| @Override |
| public Iterator<T> iterator() { |
| return new PredicatedProxyNodeIterator<>(nodeIterable.iterator(), predicate); |
| } |
| |
| @SuppressWarnings("unchecked") |
| @Override |
| public <F extends T> FilteredNodeIterable<F> filter(Class<F> clazz) { |
| return (FilteredNodeIterable<F>) this.and(NodePredicates.isA(clazz)); |
| } |
| |
| @Override |
| public FilteredNodeIterable<T> filter(NodePredicate p) { |
| return this.and(p); |
| } |
| |
| } |
