content: /* 
   * Kodkod -- Copyright (c) 2005-present, Emina Torlak
   *
   * Permission is hereby granted, free of charge, to any person obtaining a copy
   * of this software and associated documentation files (the "Software"), to deal
   * in the Software without restriction, including without limitation the rights
   * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
   * copies of the Software, and to permit persons to whom the Software is
   * furnished to do so, subject to the following conditions:
   *
   * The above copyright notice and this permission notice shall be included in
   * all copies or substantial portions of the Software.
   *
   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
   * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
   * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
   * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
   * THE SOFTWARE.
   */
  package kodkod.engine.fol2sat;
  
  import java.util.Map;
  
  import kodkod.ast.Formula;
  import kodkod.ast.Node;
  import kodkod.ast.Variable;
  import kodkod.instance.TupleSet;
  
  /**
   * A filter for TranslationRecords, based on the value of a record's node and literal fields.
   **/
  public interface RecordFilter {
  	/**
  	 * Returns true if the records with the given node,  formula derived from the node, literal, and environment
  	 * should be returned by iterators produced by the {@linkplain TranslationLog#replay()} method.
  	 * @return true if the records with the given node,  formula derived from the node, literal, and environment
  	 * should be returned by iterators produced by {@linkplain TranslationLog#replay()}.
  	 */
  	public abstract boolean accept(Node node, Formula translated, int literal, Map<Variable,TupleSet> env);
  	
  	/**
  	 * A record filter that accepts all records.
  	 */
  	public static RecordFilter ALL = new RecordFilter() {
  		/**
  		 * Returns true.
  		 * @return true
  		 */
  		public boolean accept(Node node, Formula translated, int literal, Map<Variable,TupleSet> env) {
  			return true;
  		}
  	};
  	
  }