0N/A/*
2362N/A * Copyright (c) 2003, Oracle and/or its affiliates. All rights reserved.
0N/A * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
0N/A *
0N/A * This code is free software; you can redistribute it and/or modify it
0N/A * under the terms of the GNU General Public License version 2 only, as
2362N/A * published by the Free Software Foundation. Oracle designates this
0N/A * particular file as subject to the "Classpath" exception as provided
2362N/A * by Oracle in the LICENSE file that accompanied this code.
0N/A *
0N/A * This code is distributed in the hope that it will be useful, but WITHOUT
0N/A * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
0N/A * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
0N/A * version 2 for more details (a copy is included in the LICENSE file that
0N/A * accompanied this code).
0N/A *
0N/A * You should have received a copy of the GNU General Public License version
0N/A * 2 along with this work; if not, write to the Free Software Foundation,
0N/A * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
0N/A *
2362N/A * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
2362N/A * or visit www.oracle.com if you need additional information or have any
2362N/A * questions.
0N/A */
0N/Apackage sun.swing;
0N/A
0N/Aimport java.util.*;
0N/A
0N/A/**
0N/A * <b>WARNING:</b> This class is an implementation detail and is only
0N/A * public so that it can be used by two packages. You should NOT consider
0N/A * this public API.
0N/A * <p>
0N/A * <b>WARNING 2:</b> This is not a general purpose List implementation! It
0N/A * has a specific use and will not work correctly if you use it outside of
0N/A * its use.
0N/A * <p>
0N/A * A specialized ArrayList that caches its hashCode as well as overriding
0N/A * equals to avoid creating an Iterator. This class is useful in scenarios
0N/A * where the list won't change and you want to avoid the overhead of hashCode
0N/A * iterating through the elements invoking hashCode. This also assumes you'll
0N/A * only ever compare a BakedArrayList to another BakedArrayList.
0N/A *
0N/A * @author Scott Violet
0N/A */
0N/Apublic class BakedArrayList extends ArrayList {
0N/A /**
0N/A * The cached hashCode.
0N/A */
0N/A private int _hashCode;
0N/A
0N/A public BakedArrayList(int size) {
0N/A super(size);
0N/A }
0N/A
0N/A public BakedArrayList(java.util.List data) {
0N/A this(data.size());
0N/A for (int counter = 0, max = data.size(); counter < max; counter++){
0N/A add(data.get(counter));
0N/A }
0N/A cacheHashCode();
0N/A }
0N/A
0N/A /**
0N/A * Caches the hash code. It is assumed you won't modify the list, or that
0N/A * if you do you'll call cacheHashCode again.
0N/A */
0N/A public void cacheHashCode() {
0N/A _hashCode = 1;
0N/A for (int counter = size() - 1; counter >= 0; counter--) {
0N/A _hashCode = 31 * _hashCode + get(counter).hashCode();
0N/A }
0N/A }
0N/A
0N/A public int hashCode() {
0N/A return _hashCode;
0N/A }
0N/A
0N/A public boolean equals(Object o) {
0N/A BakedArrayList list = (BakedArrayList)o;
0N/A int size = size();
0N/A
0N/A if (list.size() != size) {
0N/A return false;
0N/A }
0N/A while (size-- > 0) {
0N/A if (!get(size).equals(list.get(size))) {
0N/A return false;
0N/A }
0N/A }
0N/A return true;
0N/A }
0N/A}
0N/A