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view graal/com.oracle.max.graal.graph/src/com/oracle/graal/graph/iterators/PredicatedProxyNodeIterator.java @ 5059:ed559a528128
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author | Thomas Wuerthinger <thomas.wuerthinger@oracle.com> |
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date | Thu, 08 Mar 2012 17:57:30 +0100 |
parents | graal/com.oracle.max.graal.graph/src/com/oracle/max/graal/graph/iterators/PredicatedProxyNodeIterator.java@cd2b68ef8e23 |
children | 4ed4295ce15f |
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/* * Copyright (c) 2011, 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 com.oracle.max.graal.graph.iterators; import java.util.*; import com.oracle.max.graal.graph.*; public final class PredicatedProxyNodeIterator<T extends Node> extends NodeIterator<T> { private final Iterator<T> iterator; private final NodePredicate predicate; private final NodePredicate until; public PredicatedProxyNodeIterator(NodePredicate until, Iterator<T> iterator, NodePredicate predicate) { this.until = until; this.iterator = iterator; this.predicate = predicate; } @Override protected void forward() { while ((current == null || !current.isAlive() || !predicate.apply(current)) && iterator.hasNext()) { current = iterator.next(); } if (current != null && (!current.isAlive() || !predicate.apply(current) || until.apply(current))) { current = null; } } }