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