文件操作 - labeled_graph_traits.hpp
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文件: /usr/include/boost/graph/detail/labeled_graph_traits.hpp
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// Copyright (C) 2009 Andrew Sutton // Use, modification and distribution is subject to 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_LABELED_GRAPH_TRAITS_HPP #define BOOST_GRAPH_LABELED_GRAPH_TRAITS_HPP #include <boost/graph/graph_mutability_traits.hpp> namespace boost { // Extend the graph mutability traits (and metafunctions) to include options // for labeled graphs. // NOTE: the label_vertex tag denotes the fact that you can basically assign // arbitrary labels to vertices without modifying the actual graph. // TODO: We might also overlay the uniqueness/multiplicity of labels in this // hierarchy also. For now, we just assumed that labels are unique. struct label_vertex_tag { }; struct labeled_add_vertex_tag : virtual label_vertex_tag { }; struct labeled_add_vertex_property_tag : virtual labeled_add_vertex_tag { }; struct labeled_remove_vertex_tag { }; struct labeled_add_edge_tag : virtual label_vertex_tag { }; struct labeled_add_edge_property_tag : virtual labeled_add_edge_tag { }; struct labeled_remove_edge_tag { }; struct labeled_mutable_vertex_graph_tag : virtual labeled_add_vertex_tag, virtual labeled_remove_vertex_tag { }; struct labeled_mutable_vertex_property_graph_tag : virtual labeled_add_vertex_property_tag, virtual labeled_remove_vertex_tag { }; struct labeled_mutable_edge_graph_tag : virtual labeled_add_edge_tag, virtual labeled_remove_edge_tag { }; struct labeled_mutable_edge_property_graph_tag : virtual labeled_add_edge_property_tag, virtual labeled_remove_edge_tag { }; struct labeled_graph_tag : virtual label_vertex_tag { }; struct labeled_mutable_graph_tag : virtual labeled_mutable_vertex_graph_tag, virtual labeled_mutable_edge_graph_tag { }; struct labeled_mutable_property_graph_tag : virtual labeled_mutable_vertex_property_graph_tag, virtual labeled_mutable_edge_property_graph_tag { }; struct labeled_add_only_property_graph_tag : virtual labeled_add_vertex_property_tag, virtual labeled_mutable_edge_property_graph_tag { }; // Metafunctions template < typename Graph > struct graph_has_add_vertex_by_label : mpl::bool_< is_convertible< typename graph_mutability_traits< Graph >::category, labeled_add_vertex_tag >::value > { }; template < typename Graph > struct graph_has_add_vertex_by_label_with_property : mpl::bool_< is_convertible< typename graph_mutability_traits< Graph >::category, labeled_add_vertex_property_tag >::value > { }; template < typename Graph > struct graph_has_remove_vertex_by_label : mpl::bool_< is_convertible< typename graph_mutability_traits< Graph >::category, labeled_remove_vertex_tag >::value > { }; template < typename Graph > struct graph_has_add_edge_by_label : mpl::bool_< is_convertible< typename graph_mutability_traits< Graph >::category, labeled_add_edge_tag >::value > { }; template < typename Graph > struct graph_has_add_edge_by_label_with_property : mpl::bool_< is_convertible< typename graph_mutability_traits< Graph >::category, labeled_add_edge_property_tag >::value > { }; template < typename Graph > struct graph_has_remove_edge_by_label : mpl::bool_< is_convertible< typename graph_mutability_traits< Graph >::category, labeled_remove_edge_tag >::value > { }; template < typename Graph > struct is_labeled_mutable_vertex_graph : mpl::and_< graph_has_add_vertex_by_label< Graph >, graph_has_remove_vertex_by_label< Graph > > { }; template < typename Graph > struct is_labeled_mutable_vertex_property_graph : mpl::and_< graph_has_add_vertex_by_label< Graph >, graph_has_remove_vertex_by_label< Graph > > { }; template < typename Graph > struct is_labeled_mutable_edge_graph : mpl::and_< graph_has_add_edge_by_label< Graph >, graph_has_remove_edge_by_label< Graph > > { }; template < typename Graph > struct is_labeled_mutable_edge_property_graph : mpl::and_< graph_has_add_edge_by_label< Graph >, graph_has_remove_edge_by_label< Graph > > { }; template < typename Graph > struct is_labeled_mutable_graph : mpl::and_< is_labeled_mutable_vertex_graph< Graph >, is_labeled_mutable_edge_graph< Graph > > { }; template < typename Graph > struct is_labeled_mutable_property_graph : mpl::and_< is_labeled_mutable_vertex_property_graph< Graph >, is_labeled_mutable_edge_property_graph< Graph > > { }; template < typename Graph > struct is_labeled_add_only_property_graph : mpl::bool_< is_convertible< typename graph_mutability_traits< Graph >::category, labeled_add_only_property_graph_tag >::value > { }; template < typename Graph > struct is_labeled_graph : mpl::bool_< is_convertible< typename graph_mutability_traits< Graph >::category, label_vertex_tag >::value > { }; template < typename > struct graph_mutability_traits; namespace graph_detail { // The determine mutability metafunction computes a labeled mutability tag // based on the mutability of the given graph type. This is used by the // graph_mutability_traits specialization below. template < typename Graph > struct determine_mutability { typedef typename mpl::if_< is_add_only_property_graph< Graph >, labeled_add_only_property_graph_tag, typename mpl::if_< is_mutable_property_graph< Graph >, labeled_mutable_property_graph_tag, typename mpl::if_< is_mutable_graph< Graph >, labeled_mutable_graph_tag, typename mpl::if_< is_mutable_edge_graph< Graph >, labeled_graph_tag, typename graph_mutability_traits< Graph >::category >:: type >::type >::type >::type type; }; } // namespace graph_detail #define LABELED_GRAPH_PARAMS typename G, typename L, typename S #define LABELED_GRAPH labeled_graph< G, L, S > // Specialize mutability traits for the labeled graph. // This specialization depends on the mutability of the underlying graph type. // If the underlying graph is fully mutable, this is also fully mutable. // Otherwise, it's different. template < LABELED_GRAPH_PARAMS > struct graph_mutability_traits< LABELED_GRAPH > { typedef typename graph_detail::determine_mutability< typename LABELED_GRAPH::graph_type >::type category; }; #undef LABELED_GRAPH_PARAMS #undef LABELED_GRAPH } // namespace boost #endif
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