source: NonGTP/Boost/boost/graph/property_iter_range.hpp @ 857

Revision 857, 4.5 KB checked in by igarcia, 19 years ago (diff)
Line 
1
2// (C) Copyright François Faure, iMAGIS-GRAVIR / UJF, 2001. Permission
3// to copy, use, modify, sell and distribute this software is granted
4// provided this copyright notice appears in all copies. This software
5// is provided "as is" without express or implied warranty, and with
6// no claim as to its suitability for any purpose.
7
8// Revision History:
9// 03 May 2001   Jeremy Siek
10//      Generalized the property map iterator and moved that
11//      part to boost/property_map.hpp. Also modified to
12//      differentiate between const/mutable graphs and
13//      added a workaround to avoid partial specialization.
14
15// 02 May 2001   François Faure
16//     Initial version.
17
18#ifndef BOOST_GRAPH_PROPERTY_ITER_RANGE_HPP
19#define BOOST_GRAPH_PROPERTY_ITER_RANGE_HPP
20
21#include <boost/property_map_iterator.hpp>
22#include <boost/graph/properties.hpp>
23#include <boost/pending/ct_if.hpp>
24#include <boost/type_traits/same_traits.hpp>
25
26namespace boost {
27
28//======================================================================
29// graph property iterator range
30
31  template <class Graph, class PropertyTag>
32  class graph_property_iter_range {
33    typedef typename property_map<Graph, PropertyTag>::type map_type;
34    typedef typename property_map<Graph, PropertyTag>::const_type
35      const_map_type;
36    typedef typename property_kind<PropertyTag>::type Kind;
37    typedef typename ct_if<is_same<Kind, vertex_property_tag>::value,
38       typename graph_traits<Graph>::vertex_iterator,
39       typename graph_traits<Graph>::edge_iterator>::type iter;
40  public:
41    typedef typename property_map_iterator_generator<map_type, iter>::type
42      iterator;
43    typedef typename property_map_iterator_generator<const_map_type, iter>
44      ::type const_iterator;
45    typedef std::pair<iterator, iterator> type;
46    typedef std::pair<const_iterator, const_iterator> const_type;
47  };
48
49  namespace detail {
50
51    template<class Graph,class Tag>
52    typename graph_property_iter_range<Graph,Tag>::type
53    get_property_iter_range_kind(Graph& graph, const Tag& tag,
54                                 const vertex_property_tag& )
55    {
56      typedef typename graph_property_iter_range<Graph,Tag>::iterator iter;
57      return std::make_pair(iter(vertices(graph).first, get(tag, graph)),
58                            iter(vertices(graph).second, get(tag, graph)));
59    }
60
61    template<class Graph,class Tag>
62    typename graph_property_iter_range<Graph,Tag>::const_type
63    get_property_iter_range_kind(const Graph& graph, const Tag& tag,
64                                 const vertex_property_tag& )
65    {
66      typedef typename graph_property_iter_range<Graph,Tag>
67        ::const_iterator iter;
68      return std::make_pair(iter(vertices(graph).first, get(tag, graph)),
69                            iter(vertices(graph).second, get(tag, graph)));
70    }
71
72
73    template<class Graph,class Tag>
74    typename graph_property_iter_range<Graph,Tag>::type
75    get_property_iter_range_kind(Graph& graph, const Tag& tag,
76                                 const edge_property_tag& )
77    {
78      typedef typename graph_property_iter_range<Graph,Tag>::iterator iter;
79      return std::make_pair(iter(edges(graph).first, get(tag, graph)),
80                            iter(edges(graph).second, get(tag, graph)));
81    }
82
83    template<class Graph,class Tag>
84    typename graph_property_iter_range<Graph,Tag>::const_type
85    get_property_iter_range_kind(const Graph& graph, const Tag& tag,
86                                 const edge_property_tag& )
87    {
88      typedef typename graph_property_iter_range<Graph,Tag>
89        ::const_iterator iter;
90      return std::make_pair(iter(edges(graph).first, get(tag, graph)),
91                            iter(edges(graph).second, get(tag, graph)));
92    }
93
94  } // namespace detail
95
96  //======================================================================
97  // get an iterator range of properties
98
99  template<class Graph, class Tag>
100  typename graph_property_iter_range<Graph, Tag>::type
101  get_property_iter_range(Graph& graph, const Tag& tag)
102  {
103    typedef typename property_kind<Tag>::type Kind;
104    return detail::get_property_iter_range_kind(graph, tag, Kind());
105  }
106
107  template<class Graph, class Tag>
108  typename graph_property_iter_range<Graph, Tag>::const_type
109  get_property_iter_range(const Graph& graph, const Tag& tag)
110  {
111    typedef typename property_kind<Tag>::type Kind;
112    return detail::get_property_iter_range_kind(graph, tag, Kind());
113  }
114
115} // namespace boost
116
117
118#endif // BOOST_GRAPH_PROPERTY_ITER_RANGE_HPP
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