Chris@16: //=======================================================================
Chris@16: // Copyright 2002 Indiana University.
Chris@16: // Authors: Andrew Lumsdaine, Lie-Quan Lee, Jeremy G. Siek
Chris@16: //
Chris@16: // Distributed under the Boost Software License, Version 1.0. (See
Chris@16: // accompanying file LICENSE_1_0.txt or copy at
Chris@16: // http://www.boost.org/LICENSE_1_0.txt)
Chris@16: //=======================================================================
Chris@16: 
Chris@16: #ifndef BOOST_GRAPH_SELECTORS_HPP
Chris@16: #define BOOST_GRAPH_SELECTORS_HPP
Chris@16: 
Chris@16: #include <boost/mpl/bool.hpp>
Chris@16: 
Chris@16: namespace boost {
Chris@16: 
Chris@16:   //===========================================================================
Chris@16:   // Selectors for the Directed template parameter of adjacency_list
Chris@16:   // and adjacency_matrix.
Chris@16: 
Chris@16:   struct directedS { enum { is_directed = true, is_bidir = false }; 
Chris@16:     typedef mpl::true_ is_directed_t; 
Chris@16:     typedef mpl::false_ is_bidir_t;
Chris@16:   };
Chris@16:   struct undirectedS { 
Chris@16:     enum { is_directed = false, is_bidir = false }; 
Chris@16:     typedef mpl::false_ is_directed_t;
Chris@16:     typedef mpl::false_ is_bidir_t;
Chris@16:   };
Chris@16:   struct bidirectionalS { 
Chris@16:     enum { is_directed = true, is_bidir = true }; 
Chris@16:     typedef mpl::true_ is_directed_t;
Chris@16:     typedef mpl::true_ is_bidir_t;
Chris@16:   };
Chris@16: 
Chris@16: } // namespace boost
Chris@16: 
Chris@16: #endif // BOOST_GRAPH_SELECTORS_HPP