code: //==============================================================================
  //	
  //	Copyright (c) 2016-
  //	Authors:
  //	* Joachim Klein <klein@tcs.inf.tu-dresden.de> (TU Dresden)
  //	
  //------------------------------------------------------------------------------
  //	
  //	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 explicit;
  
  import prism.PrismException;
  
  /**
   * Interface for a consumer of SCC information, for use with an {@code SCCComputer}.
   * When a new SCC is discovered, first {@code notifyStartSCC()} will be called.
   * Subsequently, for each state of the SCC, {@code notifyStateInSCC()} will be called.
   * When all states of the SCC have been notified, {@code notifyEndSCC()} will be called.
   * When the whole SCC computation is finished, {@code notifyDone()} will be called once.
   */
  public interface SCCConsumer {
  	/**
  	 * Call-back function, will be called once at the start.
  	 * Default implementation: Ignore.
  	 */
  	public default void notifyStart(Model model)
  	{
  		// ignore
  	}
  
  	/**
  	 * Call-back function, will be called when a new SCC is discovered.
  	 **/
  	public void notifyStartSCC() throws PrismException;
  
  	/**
  	 * Call-back function, will be called once for each state in the SCC.
  	 */
  	public void notifyStateInSCC(int stateIndex) throws PrismException;
  
  	/**
  	 * Call-back function, will be called when all states of the SCC have been
  	 * discovered.
  	 **/
  	public void notifyEndSCC() throws PrismException;
  
  	/**
  	 * Call-back function. Will be called after SCC computation is complete.
  	 */
  	public default void notifyDone() {}
  
  }
  