/* Soot - a J*va Optimization Framework
* Copyright (C) 2005 Navindra Umanee <navindra@cs.mcgill.ca>
*
* This library 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 2.1 of the License, or (at your option) any later version.
*
* This library 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 this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
package soot.toolkits.graph;
/**
* DirectedGraph which can be reversed and re-reversed.
*
* @author Navindra Umanee
**/
public interface ReversibleGraph extends MutableDirectedGraph
{
/**
* Returns true if the graph is now reversed from its original state
* at creation.
**/
public boolean isReversed();
/**
* Reverse the edges of the current graph and swap head and tail
* nodes. Returns self.
**/
public ReversibleGraph reverse();
}