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204 lines
5.0 KiB
204 lines
5.0 KiB
// Copyright (C) 2009 Andrew Sutton |
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// |
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// Use, modification and distribution is subject to the Boost Software |
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// License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at |
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// http://www.boost.org/LICENSE_1_0.txt) |
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#ifndef BOOST_GRAPH_MUTABILITY_TRAITS_HPP |
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#define BOOST_GRAPH_MUTABILITY_TRAITS_HPP |
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#include <boost/config.hpp> |
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#include <boost/mpl/if.hpp> |
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#include <boost/mpl/and.hpp> |
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#include <boost/mpl/bool.hpp> |
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#include <boost/type_traits/is_same.hpp> |
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namespace boost { |
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// The mutabiltiy categories classify graphs by their mutating operations |
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// on the edge and vertex sets. This is a substantially more refined |
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// categorization than the MutableGraph and MutablePropertyGraph denote. |
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// Currently, this framework is only used in the graph tests to help |
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// dispatch test to the correct places. However, there are probably some |
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// constructive or destructive algorithms (i.e., graph generators) that |
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// may use these to describe requirements on graph inputs. |
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struct add_vertex_tag { }; |
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struct add_vertex_property_tag : virtual add_vertex_tag { }; |
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struct add_edge_tag { }; |
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struct add_edge_property_tag : virtual add_edge_tag { }; |
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struct remove_vertex_tag { }; |
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struct remove_edge_tag { }; |
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struct mutable_vertex_graph_tag |
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: virtual add_vertex_tag, virtual remove_vertex_tag |
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{ }; |
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struct mutable_vertex_property_graph_tag |
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: virtual add_vertex_property_tag, virtual remove_vertex_tag |
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{ }; |
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struct mutable_edge_graph_tag |
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: virtual add_edge_tag, virtual remove_edge_tag |
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{ }; |
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struct mutable_edge_property_graph_tag |
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: virtual add_edge_property_tag, virtual remove_edge_tag |
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{ }; |
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struct mutable_graph_tag |
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: virtual mutable_vertex_graph_tag |
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, virtual mutable_edge_graph_tag |
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{ }; |
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struct mutable_property_graph_tag |
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: virtual mutable_vertex_property_graph_tag |
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, virtual mutable_edge_property_graph_tag |
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{ }; |
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// Some graphs just don't like to be torn down. Note this only restricts |
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// teardown to the set of vertices, not the vertex set. |
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// TODO: Find a better name for this tag. |
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struct add_only_property_graph_tag |
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: virtual add_vertex_property_tag |
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, virtual mutable_edge_property_graph_tag |
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{ }; |
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/** |
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* The graph_mutability_traits provide methods for determining the |
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* interfaces supported by graph classes for adding and removing vertices |
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* and edges. |
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*/ |
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template <typename Graph> |
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struct graph_mutability_traits { |
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typedef typename Graph::mutability_category category; |
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}; |
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template <typename Graph> |
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struct graph_has_add_vertex |
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: mpl::bool_< |
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is_convertible< |
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typename graph_mutability_traits<Graph>::category, |
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add_vertex_tag |
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>::value |
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> |
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{ }; |
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template <typename Graph> |
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struct graph_has_add_vertex_with_property |
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: mpl::bool_< |
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is_convertible< |
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typename graph_mutability_traits<Graph>::category, |
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add_vertex_property_tag |
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>::value |
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> |
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{ }; |
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template <typename Graph> |
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struct graph_has_remove_vertex |
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: mpl::bool_< |
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is_convertible< |
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typename graph_mutability_traits<Graph>::category, |
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remove_vertex_tag |
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>::value |
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> |
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{ }; |
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template <typename Graph> |
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struct graph_has_add_edge |
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: mpl::bool_< |
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is_convertible< |
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typename graph_mutability_traits<Graph>::category, |
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add_edge_tag |
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>::value |
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> |
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{ }; |
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template <typename Graph> |
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struct graph_has_add_edge_with_property |
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: mpl::bool_< |
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is_convertible< |
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typename graph_mutability_traits<Graph>::category, |
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add_edge_property_tag |
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>::value |
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> |
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{ }; |
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template <typename Graph> |
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struct graph_has_remove_edge |
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: mpl::bool_< |
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is_convertible< |
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typename graph_mutability_traits<Graph>::category, |
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remove_edge_tag |
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>::value |
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> |
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{ }; |
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template <typename Graph> |
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struct is_mutable_vertex_graph |
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: mpl::and_< |
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graph_has_add_vertex<Graph>, |
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graph_has_remove_vertex<Graph> |
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> |
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{ }; |
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template <typename Graph> |
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struct is_mutable_vertex_property_graph |
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: mpl::and_< |
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graph_has_add_vertex_with_property<Graph>, |
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graph_has_remove_vertex<Graph> |
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> |
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{ }; |
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template <typename Graph> |
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struct is_mutable_edge_graph |
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: mpl::and_< |
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graph_has_add_edge<Graph>, |
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graph_has_remove_edge<Graph> |
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> |
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{ }; |
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template <typename Graph> |
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struct is_mutable_edge_property_graph |
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: mpl::and_< |
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graph_has_add_edge_with_property<Graph>, |
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graph_has_remove_edge<Graph> |
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> |
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{ }; |
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template <typename Graph> |
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struct is_mutable_graph |
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: mpl::and_< |
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is_mutable_vertex_graph<Graph>, |
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is_mutable_edge_graph<Graph> |
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> |
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{ }; |
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template <typename Graph> |
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struct is_mutable_property_graph |
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: mpl::and_< |
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is_mutable_vertex_property_graph<Graph>, |
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is_mutable_edge_property_graph<Graph> |
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> |
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{ }; |
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template <typename Graph> |
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struct is_add_only_property_graph |
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: mpl::bool_< |
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is_convertible< |
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typename graph_mutability_traits<Graph>::category, |
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add_only_property_graph_tag |
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>::value |
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> |
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{ }; |
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/** @name Mutability Traits Specializations */ |
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//@{ |
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//@} |
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} // namespace boost |
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#endif
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