001 /* 002 * Sonar, open source software quality management tool. 003 * Copyright (C) 2008-2012 SonarSource 004 * mailto:contact AT sonarsource DOT com 005 * 006 * Sonar is free software; you can redistribute it and/or 007 * modify it under the terms of the GNU Lesser General Public 008 * License as published by the Free Software Foundation; either 009 * version 3 of the License, or (at your option) any later version. 010 * 011 * Sonar is distributed in the hope that it will be useful, 012 * but WITHOUT ANY WARRANTY; without even the implied warranty of 013 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 014 * Lesser General Public License for more details. 015 * 016 * You should have received a copy of the GNU Lesser General Public 017 * License along with Sonar; if not, write to the Free Software 018 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02 019 */ 020 package org.sonar.plugins.core.timemachine.tracking; 021 022 /** 023 * Wrap another {@link SequenceComparator} for use with {@link HashedSequence}. 024 */ 025 public class HashedSequenceComparator<S extends Sequence> implements SequenceComparator<HashedSequence<S>> { 026 027 private final SequenceComparator<? super S> cmp; 028 029 public HashedSequenceComparator(SequenceComparator<? super S> cmp) { 030 this.cmp = cmp; 031 } 032 033 public boolean equals(HashedSequence<S> a, int ai, HashedSequence<S> b, int bi) { 034 if (a.hashes[ai] == b.hashes[bi]) { 035 return cmp.equals(a.base, ai, b.base, bi); 036 } 037 return false; 038 } 039 040 public int hash(HashedSequence<S> seq, int i) { 041 return seq.hashes[i]; 042 } 043 044 }