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 */
020package org.sonar.duplications.index;
021
022import org.sonar.duplications.CodeFragment;
023
024public class ClonePart implements CodeFragment {
025
026  private final String resourceId;
027  private final int startUnit;
028  private final int startLine;
029  private final int endLine;
030
031  /**
032   * Cache for hash code.
033   */
034  private int hash;
035
036  public ClonePart(String resourceId, int startUnit, int startLine, int endLine) {
037    this.resourceId = resourceId;
038    this.startUnit = startUnit;
039    this.startLine = startLine;
040    this.endLine = endLine;
041  }
042
043  public String getResourceId() {
044    return resourceId;
045  }
046
047  public int getUnitStart() {
048    return startUnit;
049  }
050
051  public int getStartLine() {
052    return startLine;
053  }
054
055  public int getEndLine() {
056    return endLine;
057  }
058
059  public int getLines() {
060    return endLine - startLine + 1;
061  }
062
063  @Override
064  public boolean equals(Object obj) {
065    if (obj instanceof ClonePart) {
066      ClonePart another = (ClonePart) obj;
067      return another.resourceId.equals(resourceId)
068        && another.startLine == startLine
069        && another.endLine == endLine
070        && another.startUnit == startUnit;
071    }
072    return false;
073  }
074
075  @Override
076  public int hashCode() {
077    int h = hash;
078    if (h == 0) {
079      h = resourceId.hashCode();
080      h = 31 * h + startLine;
081      h = 31 * h + endLine;
082      h = 31 * h + startUnit;
083      hash = h;
084    }
085    return h;
086  }
087
088  @Override
089  public String toString() {
090    return "'" + resourceId + "':[" + startUnit + "|" + startLine + "-" + endLine + "]";
091  }
092
093}