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
021package org.sonar.duplications.statement;
022
023import java.util.List;
024
025import org.sonar.duplications.token.Token;
026import org.sonar.duplications.token.TokenQueue;
027
028public class StatementChannelDisptacher {
029
030  private final StatementChannel[] channels;
031
032  public StatementChannelDisptacher(List<StatementChannel> channels) {
033    this.channels = channels.toArray(new StatementChannel[channels.size()]);
034  }
035
036  public boolean consume(TokenQueue tokenQueue, List<Statement> statements) {
037    Token nextToken = tokenQueue.peek();
038    while (nextToken != null) {
039      boolean channelConsumed = false;
040      for (StatementChannel channel : channels) {
041        if (channel.consume(tokenQueue, statements)) {
042          channelConsumed = true;
043          break;
044        }
045      }
046      if (!channelConsumed) {
047        throw new IllegalStateException("None of the statement channel has been able to consume token: " + nextToken);
048      }
049      nextToken = tokenQueue.peek();
050    }
051    return true;
052  }
053
054}