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 package org.sonar.duplications.statement.matcher; 021 022 import java.util.HashSet; 023 import java.util.List; 024 import java.util.Set; 025 026 import org.sonar.duplications.token.Token; 027 import org.sonar.duplications.token.TokenQueue; 028 029 /** 030 * Consumes everything up to one of the specified tokens. 031 */ 032 public class UptoTokenMatcher extends TokenMatcher { 033 034 private final Set<String> uptoMatchTokens = new HashSet<String>(); 035 036 public UptoTokenMatcher(String[] uptoMatchTokens) { 037 if (uptoMatchTokens == null) { 038 throw new IllegalArgumentException(); 039 } 040 if (uptoMatchTokens.length == 0) { 041 // otherwise we will always try to consume everything, but will never succeed 042 throw new IllegalArgumentException(); 043 } 044 for (String uptoMatchToken : uptoMatchTokens) { 045 this.uptoMatchTokens.add(uptoMatchToken); 046 } 047 } 048 049 @Override 050 public boolean matchToken(TokenQueue tokenQueue, List<Token> matchedTokenList) { 051 do { 052 Token token = tokenQueue.poll(); 053 matchedTokenList.add(token); 054 if (uptoMatchTokens.contains(token.getValue())) { 055 return true; 056 } 057 } while (tokenQueue.peek() != null); 058 return false; 059 } 060 061 }