Mercurial > hg > truffle
view graal/com.oracle.graal.graph/src/com/oracle/graal/graph/NodeUsageIterator.java @ 18163:c88ab4f1f04a
re-enabled Checkstyle with the release of 6.0 that supports Java 8; fixed existing Checkstyle warnings
author | Doug Simon <doug.simon@oracle.com> |
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date | Fri, 24 Oct 2014 16:18:10 +0200 |
parents | 87a40fe1ba0c |
children | ef1494ece1a8 |
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/* * Copyright (c) 2014, 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.graal.graph; import java.util.*; class NodeUsageIterator implements Iterator<Node> { final Node node; int index = -1; Node current; void advance() { current = null; index++; if (index == 0) { current = node.usage0; } else if (index == 1) { current = node.usage1; } else { if (index - Node.INLINE_USAGE_COUNT < node.extraUsages.length) { current = node.extraUsages[index - Node.INLINE_USAGE_COUNT]; } } } public NodeUsageIterator(Node node) { this.node = node; advance(); } public boolean hasNext() { return current != null; } public Node next() { Node result = current; if (result == null) { throw new NoSuchElementException(); } advance(); return result; } @Override public void remove() { throw new UnsupportedOperationException(); } }