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// Copyright 2008-2010 Gordon Woodhull
// 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_MSM_MPL_GRAPH_SEARCH_COLORS_HPP_INCLUDED
#define BOOST_MSM_MPL_GRAPH_SEARCH_COLORS_HPP_INCLUDED
namespace boost {
namespace msm {
namespace mpl_graph {
namespace search_colors {
struct White {};
struct Gray {};
struct Black {};
}
struct create_search_color_map : mpl::map<> {};
struct search_color_map_ops {
template<typename Node, typename Color, typename State>
struct set_color :
mpl::insert<State, mpl::pair<Node, Color> >
{};
template<typename Node, typename State>
struct get_color :
mpl::if_<mpl::has_key<State, Node>,
mpl::at<State, Node>,
search_colors::White>
{};
};
} // namespace mpl_graph
} // namespace msm
} // namespace boost
#endif // BOOST_MSM_MPL_GRAPH_SEARCH_COLORS_HPP_INCLUDED
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