content: // This file is part of AceWiki.
  // Copyright 2008-2013, AceWiki developers.
  // 
  // AceWiki 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.
  // 
  // AceWiki 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 AceWiki. If
  // not, see http://www.gnu.org/licenses/.
  
  package ch.uzh.ifi.attempto.chartparser;
  
  import java.util.Collection;
  
  import ch.uzh.ifi.attempto.base.AbstractOption;
  
  /**
   * This interface represents a dynamic lexicon that can be used by the chart parser.
   * 
   * @author Tobias Kuhn
   */
  public interface DynamicLexicon {
  	
  	/**
  	 * This method should return the lexical rules for the given abstract option. Lexical rules
  	 * that do not comply with this abstract option are filtered out afterwards. This method is
  	 * used for the prediction of possible next tokens. The returned collection does not need to be
  	 * complete. For open word classes (e.g. string and numbers) just a subset of all possible
  	 * lexicon entries can be returned.
  	 * 
  	 * @param option The abstract option.
  	 * @return The lexical rules for the given abstract option.
  	 */
  	public Collection<LexicalRule> getLexRules(AbstractOption option);
  	
  	/**
  	 * This method should return the lexical rules with the given word (terminal category). Lexical
  	 * rules with a different word are filtered out afterwards.
  	 * 
  	 * @param word The word.
  	 * @return The lexical rules with the given word as their terminal category.
  	 */
  	public Collection<LexicalRule> getLexRules(String word);
  
  }
  