104 lines
3.2 KiB
C++
104 lines
3.2 KiB
C++
//=======================================================================
|
|
// Copyright 2002 Indiana University.
|
|
// Authors: Andrew Lumsdaine, Lie-Quan Lee, Jeremy G. Siek
|
|
//
|
|
// Distributed under 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_ADJACENCY_ITERATOR_HPP
|
|
#define BOOST_ADJACENCY_ITERATOR_HPP
|
|
|
|
#include <boost/detail/iterator.hpp>
|
|
#include <boost/iterator/iterator_adaptor.hpp>
|
|
#include <boost/graph/graph_traits.hpp>
|
|
|
|
namespace boost
|
|
{
|
|
|
|
template <class Graph, class Vertex, class OutEdgeIter, class Difference>
|
|
struct adjacency_iterator
|
|
: iterator_adaptor<
|
|
adjacency_iterator<Graph,Vertex,OutEdgeIter,Difference>
|
|
, OutEdgeIter
|
|
, Vertex
|
|
, use_default
|
|
, Vertex
|
|
, Difference
|
|
>
|
|
{
|
|
typedef iterator_adaptor<
|
|
adjacency_iterator<Graph,Vertex,OutEdgeIter,Difference>
|
|
, OutEdgeIter
|
|
, Vertex
|
|
, use_default
|
|
, Vertex
|
|
, Difference
|
|
> super_t;
|
|
|
|
inline adjacency_iterator() {}
|
|
inline adjacency_iterator(OutEdgeIter const& i, const Graph* g) : super_t(i), m_g(g) { }
|
|
|
|
inline Vertex
|
|
dereference() const
|
|
{ return target(*this->base(), *m_g); }
|
|
|
|
const Graph* m_g;
|
|
};
|
|
|
|
template <class Graph,
|
|
class Vertex = typename graph_traits<Graph>::vertex_descriptor,
|
|
class OutEdgeIter=typename graph_traits<Graph>::out_edge_iterator>
|
|
class adjacency_iterator_generator
|
|
{
|
|
typedef typename boost::detail::iterator_traits<OutEdgeIter>
|
|
::difference_type difference_type;
|
|
public:
|
|
typedef adjacency_iterator<Graph,Vertex,OutEdgeIter,difference_type> type;
|
|
};
|
|
|
|
template <class Graph, class Vertex, class InEdgeIter, class Difference>
|
|
struct inv_adjacency_iterator
|
|
: iterator_adaptor<
|
|
inv_adjacency_iterator<Graph,Vertex,InEdgeIter,Difference>
|
|
, InEdgeIter
|
|
, Vertex
|
|
, use_default
|
|
, Vertex
|
|
, Difference
|
|
>
|
|
{
|
|
typedef iterator_adaptor<
|
|
inv_adjacency_iterator<Graph,Vertex,InEdgeIter,Difference>
|
|
, InEdgeIter
|
|
, Vertex
|
|
, use_default
|
|
, Vertex
|
|
, Difference
|
|
> super_t;
|
|
|
|
inline inv_adjacency_iterator() { }
|
|
inline inv_adjacency_iterator(InEdgeIter const& i, const Graph* g) : super_t(i), m_g(g) { }
|
|
|
|
inline Vertex
|
|
dereference() const
|
|
{ return source(*this->base(), *m_g); }
|
|
|
|
const Graph* m_g;
|
|
};
|
|
|
|
template <class Graph,
|
|
class Vertex = typename graph_traits<Graph>::vertex_descriptor,
|
|
class InEdgeIter = typename graph_traits<Graph>::in_edge_iterator>
|
|
class inv_adjacency_iterator_generator {
|
|
typedef typename boost::detail::iterator_traits<InEdgeIter>
|
|
::difference_type difference_type;
|
|
public:
|
|
typedef inv_adjacency_iterator<Graph, Vertex, InEdgeIter, difference_type> type;
|
|
};
|
|
|
|
} // namespace boost
|
|
|
|
#endif // BOOST_DETAIL_ADJACENCY_ITERATOR_HPP
|