Mercurial > hg > truffle
view graal/com.oracle.graal.phases/src/com/oracle/graal/phases/util/ArraySet.java @ 18995:a2cb19764970
Rename MergeNode to AbstractMergeNode.
author | Thomas Wuerthinger <thomas.wuerthinger@oracle.com> |
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date | Wed, 28 Jan 2015 01:04:20 +0100 |
parents | f0254bab4c6b |
children |
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/* * Copyright (c) 2013, 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.phases.util; import java.util.*; /** * Mimic a set implementation with an ArrayList. Beneficial for small sets (compared to * {@link HashSet}). */ public class ArraySet<E> extends ArrayList<E> implements Set<E> { private static final long serialVersionUID = 4476957522387436654L; public ArraySet() { super(); } public ArraySet(int i) { super(i); } public ArraySet(Collection<? extends E> c) { super(c); } @Override public boolean add(E e) { // avoid duplicated entries if (contains(e)) { return false; } return super.add(e); } }