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.duplications.statement; 021 022 import org.sonar.duplications.CodeFragment; 023 import org.sonar.duplications.token.Token; 024 025 import java.util.List; 026 027 public class Statement implements CodeFragment { 028 029 private final int startLine; 030 private final int endLine; 031 private final String value; 032 033 /** 034 * Cache for hash code. 035 */ 036 private int hash; 037 038 public Statement(int startLine, int endLine, String value) { 039 this.startLine = startLine; 040 this.endLine = endLine; 041 this.value = value; 042 } 043 044 public Statement(List<Token> tokens) { 045 if (tokens == null || tokens.isEmpty()) { 046 throw new IllegalArgumentException("A statement can't be initialized with an empty list of tokens"); 047 } 048 StringBuilder sb = new StringBuilder(); 049 for (Token token : tokens) { 050 sb.append(token.getValue()); 051 } 052 this.value = sb.toString(); 053 this.startLine = tokens.get(0).getLine(); 054 this.endLine = tokens.get(tokens.size() - 1).getLine(); 055 } 056 057 public int getStartLine() { 058 return startLine; 059 } 060 061 public int getEndLine() { 062 return endLine; 063 } 064 065 public String getValue() { 066 return value; 067 } 068 069 @Override 070 public int hashCode() { 071 int h = hash; 072 if (h == 0) { 073 h = value.hashCode(); 074 h = 31 * h + startLine; 075 h = 31 * h + endLine; 076 hash = h; 077 } 078 return h; 079 } 080 081 @Override 082 public boolean equals(Object obj) { 083 if (!(obj instanceof Statement)) { 084 return false; 085 } 086 Statement other = (Statement) obj; 087 return startLine == other.startLine 088 && endLine == other.endLine 089 && value.equals(other.value); 090 } 091 092 @Override 093 public String toString() { 094 return "[" + getStartLine() + "-" + getEndLine() + "] [" + getValue() + "]"; 095 } 096 097 }