001 /* 002 * Sonar, open source software quality management tool. 003 * Copyright (C) 2008-2011 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 */ 020 021 /** 022 * BSD-style license; for more info see http://pmd.sourceforge.net/license.html 023 */ 024 package net.sourceforge.pmd.cpd; 025 026 import java.util.HashMap; 027 import java.util.Map; 028 029 public class TokenEntry implements Comparable<TokenEntry> { 030 031 public static final TokenEntry EOF = new TokenEntry(); 032 033 private String tokenSrcID; 034 private int beginLine; 035 private int index; 036 private int identifier; 037 private int hashCode; 038 039 private final static Map<String, Integer> Tokens = new HashMap<String, Integer>(); 040 private static int TokenCount = 0; 041 042 private TokenEntry() { 043 this.identifier = 0; 044 this.tokenSrcID = "EOFMarker"; 045 } 046 047 public TokenEntry(String image, String tokenSrcID, int beginLine) { 048 Integer i = Tokens.get(image); 049 if (i == null) { 050 i = Tokens.size() + 1; 051 Tokens.put(image, i); 052 } 053 this.identifier = i.intValue(); 054 this.tokenSrcID = tokenSrcID; 055 this.beginLine = beginLine; 056 this.index = TokenCount++; 057 } 058 059 public static TokenEntry getEOF() { 060 TokenCount++; 061 return EOF; 062 } 063 064 public static void clearImages() { 065 Tokens.clear(); 066 TokenCount = 0; 067 } 068 069 public String getTokenSrcID() { 070 return tokenSrcID; 071 } 072 073 public int getBeginLine() { 074 return beginLine; 075 } 076 077 public int getIdentifier() { 078 return this.identifier; 079 } 080 081 public int getIndex() { 082 return this.index; 083 } 084 085 public int hashCode() { 086 return hashCode; 087 } 088 089 public void setHashCode(int hashCode) { 090 this.hashCode = hashCode; 091 } 092 093 public boolean equals(Object o) { 094 if (!(o instanceof TokenEntry)) { 095 return false; 096 } 097 TokenEntry other = (TokenEntry) o; 098 return other.hashCode == hashCode; 099 } 100 101 public int compareTo(TokenEntry other) { 102 return getIndex() - other.getIndex(); 103 } 104 }