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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
namespace boost {
//===========================================================================
// Selectors for the Directed template parameter of adjacency_list
// and adjacency_matrix.
struct directedS { enum { is_directed = true, is_bidir = false };
typedef true_type is_directed_t;
typedef false_type is_bidir_t;
};
struct undirectedS {
enum { is_directed = false, is_bidir = false };
typedef false_type is_directed_t;
typedef false_type is_bidir_t;
};
struct bidirectionalS {
enum { is_directed = true, is_bidir = true };
typedef true_type is_directed_t;
typedef true_type is_bidir_t;
};
} // namespace boost
#endif // BOOST_GRAPH_SELECTORS_HPP