| 1 | //======================================================================= |
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| 2 | // Copyright 2002 Indiana University. |
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| 3 | // Authors: Andrew Lumsdaine, Lie-Quan Lee, Jeremy G. Siek |
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| 4 | // |
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| 5 | // Distributed under the Boost Software License, Version 1.0. (See |
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| 6 | // accompanying file LICENSE_1_0.txt or copy at |
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| 7 | // http://www.boost.org/LICENSE_1_0.txt) |
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| 8 | //======================================================================= |
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| 9 | |
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| 10 | #ifndef BOOST_GRAPH_SELECTORS_HPP |
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| 11 | #define BOOST_GRAPH_SELECTORS_HPP |
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| 12 | |
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| 13 | #include <boost/mpl/bool.hpp> |
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| 14 | |
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| 15 | namespace boost |
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| 16 | { |
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| 17 | |
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| 18 | //=========================================================================== |
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| 19 | // Selectors for the Directed template parameter of adjacency_list |
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| 20 | // and adjacency_matrix. |
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| 21 | |
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| 22 | struct directedS |
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| 23 | { |
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| 24 | enum |
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| 25 | { |
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| 26 | is_directed = true, |
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| 27 | is_bidir = false |
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| 28 | }; |
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| 29 | typedef mpl::true_ is_directed_t; |
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| 30 | typedef mpl::false_ is_bidir_t; |
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| 31 | }; |
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| 32 | struct undirectedS |
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| 33 | { |
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| 34 | enum |
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| 35 | { |
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| 36 | is_directed = false, |
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| 37 | is_bidir = false |
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| 38 | }; |
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| 39 | typedef mpl::false_ is_directed_t; |
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| 40 | typedef mpl::false_ is_bidir_t; |
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| 41 | }; |
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| 42 | struct bidirectionalS |
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| 43 | { |
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| 44 | enum |
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| 45 | { |
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| 46 | is_directed = true, |
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| 47 | is_bidir = true |
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| 48 | }; |
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| 49 | typedef mpl::true_ is_directed_t; |
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| 50 | typedef mpl::true_ is_bidir_t; |
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| 51 | }; |
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| 52 | |
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| 53 | } // namespace boost |
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| 54 | |
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| 55 | #endif // BOOST_GRAPH_SELECTORS_HPP |
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| 56 | |
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