org.sonar.duplications.statement.matcher.ExactTokenMatcher Maven / Gradle / Ivy
/*
* SonarQube
* Copyright (C) 2009-2017 SonarSource SA
* mailto:info AT sonarsource DOT com
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 3 of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
package org.sonar.duplications.statement.matcher;
import java.util.List;
import org.sonar.duplications.token.Token;
import org.sonar.duplications.token.TokenQueue;
/**
* Consumes only one specified token.
*/
public class ExactTokenMatcher extends TokenMatcher {
private final String tokenToMatch;
public ExactTokenMatcher(String tokenToMatch) {
if (tokenToMatch == null) {
throw new IllegalArgumentException();
}
this.tokenToMatch = tokenToMatch;
}
@Override
public boolean matchToken(TokenQueue tokenQueue, List matchedTokenList) {
if (tokenQueue.isNextTokenValue(tokenToMatch)) {
matchedTokenList.add(tokenQueue.poll());
return true;
}
return false;
}
}