code: //==============================================================================
  //	
  //	Copyright (c) 2002-
  //	Authors:
  //	* Dave Parker <david.parker@comlab.ox.ac.uk> (University of Oxford)
  //	
  //------------------------------------------------------------------------------
  //	
  //	This file is part of PRISM.
  //	
  //	PRISM is free software; you can redistribute it and/or modify
  //	it under the terms of the GNU General Public License as published by
  //	the Free Software Foundation; either version 2 of the License, or
  //	(at your option) any later version.
  //	
  //	PRISM 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 General Public License for more details.
  //	
  //	You should have received a copy of the GNU General Public License
  //	along with PRISM; if not, write to the Free Software Foundation,
  //	Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  //	
  //==============================================================================
  
  package prism;
  
  /**
   * Class to store basic information about how results of model checking will be filtered.
   */
  public class Filter
  {
  	// Enums for types of filter
  	public enum FilterOperator {
  		STATE;
  	};
  	// Filter operator
  	private FilterOperator op = null;
  	// State of interest
  	private int stateIndex = -1; 
  
  	// Constructors
  	
  	public Filter(FilterOperator op, int stateIndex)
  	{
  		setOperator(op);
  		setStateIndex(stateIndex);
  	}
  	
  	// Getters/setters
  	
  	public FilterOperator getOperator()
  	{
  		return op;
  	}
  	
  	public int getStateIndex()
  	{
  		return stateIndex;
  	}
  	
  	public void setOperator(FilterOperator op)
  	{
  		this.op = op;
  	}
  	
  	public void setStateIndex(int stateIndex)
  	{
  		this.stateIndex = stateIndex;
  	}
  }
  
  // ------------------------------------------------------------------------------
  