001/* 002 * BridJ - Dynamic and blazing-fast native interop for Java. 003 * http://bridj.googlecode.com/ 004 * 005 * Copyright (c) 2010-2013, Olivier Chafik (http://ochafik.com/) 006 * All rights reserved. 007 * 008 * Redistribution and use in source and binary forms, with or without 009 * modification, are permitted provided that the following conditions are met: 010 * 011 * * Redistributions of source code must retain the above copyright 012 * notice, this list of conditions and the following disclaimer. 013 * * Redistributions in binary form must reproduce the above copyright 014 * notice, this list of conditions and the following disclaimer in the 015 * documentation and/or other materials provided with the distribution. 016 * * Neither the name of Olivier Chafik nor the 017 * names of its contributors may be used to endorse or promote products 018 * derived from this software without specific prior written permission. 019 * 020 * THIS SOFTWARE IS PROVIDED BY OLIVIER CHAFIK AND CONTRIBUTORS ``AS IS'' AND ANY 021 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 022 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 023 * DISCLAIMED. IN NO EVENT SHALL THE REGENTS AND CONTRIBUTORS BE LIABLE FOR ANY 024 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 025 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 026 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 027 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 028 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 029 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 030 */ 031package org.bridj.util; 032 033public class Tuple { 034 035 protected final Object[] data; 036 037 public Tuple(Object[] data) { 038 this.data = data; 039 } 040 041 public Tuple(int n) { 042 this.data = new Object[n]; 043 } 044 045 @Override 046 public int hashCode() { 047 int h = 0; 048 for (int i = 0, n = size(); i < n; i++) { 049 Object o = get(i); 050 if (o == null) { 051 continue; 052 } 053 h ^= o.hashCode(); 054 } 055 return h; 056 } 057 058 @Override 059 public boolean equals(Object obj) { 060 if (obj == null || !(obj instanceof Tuple)) { 061 return false; 062 } 063 Tuple t = (Tuple) obj; 064 int s = size(); 065 if (t.size() != s) { 066 return false; 067 } 068 for (int i = 0; i < s; i++) { 069 Object o1 = get(i), o2 = t.get(i); 070 if (o1 == null) { 071 if (o2 != null) { 072 return false; 073 } 074 } else if (!o1.equals(o2)) { 075 return false; 076 } 077 } 078 return true; 079 } 080 081 public Object get(int index) { 082 return data[index]; 083 } 084 085 public void set(int index, Object value) { 086 data[index] = value; 087 } 088 089 public int size() { 090 return data.length; 091 } 092 093 @Override 094 public String toString() { 095 StringBuilder b = new StringBuilder("{"); 096 for (int i = 0, n = size(); i < n; i++) { 097 if (i != 0) { 098 b.append(','); 099 } 100 b.append('\n'); 101 b.append('\t').append(get(i)); 102 } 103 b.append("\n}"); 104 return b.toString(); 105 } 106}