205 lines
5.0 KiB
C++
205 lines
5.0 KiB
C++
// 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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