src/hugo/map_bits.h
author alpar
Thu, 16 Sep 2004 20:55:01 +0000
changeset 876 26c573ca6a99
child 901 69a8e672acb1
permissions -rw-r--r--
Go back to -r1169 in order to be able to compile minlengthpath_test.cc
deba@844
     1
// -*- c++ -*- 
deba@844
     2
#ifndef MAP_BITS_H
deba@844
     3
#define MAP_BITS_H
deba@844
     4
deba@844
     5
///\ingroup graphmaps
deba@844
     6
///\file
deba@844
     7
///\brief Some utils to help implement maps.
deba@844
     8
deba@844
     9
namespace hugo {
deba@844
    10
deba@844
    11
deba@844
    12
  /// \addtogroup graphmaps
deba@844
    13
  /// @{
deba@844
    14
deba@844
    15
  /// Helper class to get information about the key type.
deba@844
    16
  template <typename Graph, typename KeyIt>
deba@844
    17
  struct KeyInfo {};
deba@844
    18
deba@844
    19
  template <typename Graph>
deba@844
    20
  struct KeyInfo<Graph, typename Graph::NodeIt> {
deba@844
    21
    static int maxId(const Graph& graph) {
deba@844
    22
      return graph.maxNodeId();
deba@844
    23
    }
deba@844
    24
    static int id(const Graph& graph, const typename Graph::Node& node) {
deba@844
    25
      return graph.id(node);
deba@844
    26
    }
deba@844
    27
  };
deba@844
    28
deba@844
    29
  template <typename Graph>
deba@844
    30
  struct KeyInfo<Graph, typename Graph::EdgeIt> {
deba@844
    31
    static int maxId(const Graph& graph) {
deba@844
    32
      return graph.maxEdgeId();
deba@844
    33
    }
deba@844
    34
    static int id(const Graph& graph, const typename Graph::Edge& edge) {
deba@844
    35
      return graph.id(edge);
deba@844
    36
    }
deba@844
    37
  };
deba@844
    38
deba@844
    39
  template <typename Graph>
deba@844
    40
  struct KeyInfo<Graph, typename Graph::SymEdgeIt> {
deba@844
    41
    static int maxId(const Graph& graph) {
deba@844
    42
      return graph.maxEdgeId() >> 1;
deba@844
    43
    }
deba@844
    44
    static int id(const Graph& graph, const typename Graph::Edge& edge) {
deba@844
    45
      return graph.id(edge) >> 1;
deba@844
    46
    }
deba@844
    47
  };
deba@844
    48
deba@844
    49
  /// @}
deba@844
    50
}
deba@844
    51
deba@844
    52
#endif