// (C) Copyright 2007-2009 Andrew Sutton
|
//
|
// Use, modification and distribution are subject to the
|
// Boost Software License, Version 1.0 (See accompanying file
|
// LICENSE_1_0.txt or http://www.boost.org/LICENSE_1_0.txt)
|
|
#ifndef BOOST_GRAPH_DETAIL_INDEX_HPP
|
#define BOOST_GRAPH_DETAIL_INDEX_HPP
|
|
#include <boost/graph/graph_traits.hpp>
|
|
// The structures in this module are responsible for selecting and defining
|
// types for accessing a builting index map. Note that the selection of these
|
// types requires the Graph parameter to model either VertexIndexGraph or
|
// EdgeIndexGraph.
|
|
namespace boost
|
{
|
namespace detail
|
{
|
template < typename Graph > struct vertex_indexer
|
{
|
typedef vertex_index_t index_type;
|
typedef typename property_map< Graph, vertex_index_t >::type map_type;
|
typedef typename property_map< Graph, vertex_index_t >::const_type
|
const_map_type;
|
typedef typename property_traits< map_type >::value_type value_type;
|
typedef typename graph_traits< Graph >::vertex_descriptor key_type;
|
|
static const_map_type index_map(const Graph& g)
|
{
|
return get(vertex_index, g);
|
}
|
|
static map_type index_map(Graph& g) { return get(vertex_index, g); }
|
|
static value_type index(key_type k, const Graph& g)
|
{
|
return get(vertex_index, g, k);
|
}
|
};
|
|
template < typename Graph > struct edge_indexer
|
{
|
typedef edge_index_t index_type;
|
typedef typename property_map< Graph, edge_index_t >::type map_type;
|
typedef typename property_map< Graph, edge_index_t >::const_type
|
const_map_type;
|
typedef typename property_traits< map_type >::value_type value_type;
|
typedef typename graph_traits< Graph >::edge_descriptor key_type;
|
|
static const_map_type index_map(const Graph& g)
|
{
|
return get(edge_index, g);
|
}
|
|
static map_type index_map(Graph& g) { return get(edge_index, g); }
|
|
static value_type index(key_type k, const Graph& g)
|
{
|
return get(edge_index, g, k);
|
}
|
};
|
|
// NOTE: The Graph parameter MUST be a model of VertexIndexGraph or
|
// VertexEdgeGraph - whichever type Key is selecting.
|
template < typename Graph, typename Key > struct choose_indexer
|
{
|
typedef typename mpl::if_<
|
is_same< Key, typename graph_traits< Graph >::vertex_descriptor >,
|
vertex_indexer< Graph >, edge_indexer< Graph > >::type indexer_type;
|
typedef typename indexer_type::index_type index_type;
|
};
|
}
|
}
|
|
#endif
|
