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lemon/traits.h
author hegyi
Thu, 20 Oct 2005 15:50:23 +0000
changeset 1731 616bc933c2bc
child 1790 c7dd9d8c770a
permissions -rw-r--r--
Mapselector widget reached its first release, but there are still work to do on it, I know... 
     1 /* -*- C++ -*-

     2  * lemon/traits.h - Part of LEMON, a generic C++ optimization library

     3  *

     4  * Copyright (C) 2005 Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport

     5  * (Egervary Research Group on Combinatorial Optimization, EGRES).

     6  *

     7  * Permission to use, modify and distribute this software is granted

     8  * provided that this copyright notice appears in all copies. For

     9  * precise terms see the accompanying LICENSE file.

    10  *

    11  * This software is provided "AS IS" with no warranty of any kind,

    12  * express or implied, and with no claim as to its suitability for any

    13  * purpose.

    14  *

    15  */

    16 

    17 #ifndef LEMON_TRAITS_H

    18 #define LEMON_TRAITS_H

    19 

    20 #include <lemon/utility.h>

    21 

    22 ///\file

    23 ///\brief Traits for graphs and maps

    24 ///

    25 

    26 namespace lemon {

    27   template <typename _Graph, typename _Item>

    28   class ItemSetTraits {};

    29   

    30   template <typename _Graph>

    31   class ItemSetTraits<_Graph, typename _Graph::Node> {

    32   public:

    33     

    34     typedef _Graph Graph;

    35 

    36     typedef typename Graph::Node Item;

    37     typedef typename Graph::NodeIt ItemIt;

    38 

    39     template <typename _Value>

    40     class Map : public Graph::template NodeMap<_Value> {

    41     public:

    42       typedef typename Graph::template NodeMap<_Value> Parent; 

    43       typedef typename Parent::Value Value;

    44 

    45       Map(const Graph& _graph) : Parent(_graph) {}

    46       Map(const Graph& _graph, const Value& _value) 

    47 	: Parent(_graph, _value) {}

    48     };

    49 

    50   };

    51 

    52   template <typename _Graph>

    53   class ItemSetTraits<_Graph, typename _Graph::Edge> {

    54   public:

    55     

    56     typedef _Graph Graph;

    57 

    58     typedef typename Graph::Edge Item;

    59     typedef typename Graph::EdgeIt ItemIt;

    60 

    61     template <typename _Value>

    62     class Map : public Graph::template EdgeMap<_Value> {

    63     public:

    64       typedef typename Graph::template EdgeMap<_Value> Parent; 

    65       typedef typename Parent::Value Value;

    66 

    67       Map(const Graph& _graph) : Parent(_graph) {}

    68       Map(const Graph& _graph, const Value& _value) 

    69 	: Parent(_graph, _value) {}

    70     };

    71 

    72   };

    73 

    74   template <typename _Graph>

    75   class ItemSetTraits<_Graph, typename _Graph::UndirEdge> {

    76   public:

    77     

    78     typedef _Graph Graph;

    79 

    80     typedef typename Graph::UndirEdge Item;

    81     typedef typename Graph::UndirEdgeIt ItemIt;

    82 

    83     template <typename _Value>

    84     class Map : public Graph::template UndirEdgeMap<_Value> {

    85     public:

    86       typedef typename Graph::template UndirEdgeMap<_Value> Parent; 

    87       typedef typename Parent::Value Value;

    88 

    89       Map(const Graph& _graph) : Parent(_graph) {}

    90       Map(const Graph& _graph, const Value& _value) 

    91 	: Parent(_graph, _value) {}

    92     };

    93 

    94   };

    95 

    96   template <typename Map, typename Enable = void>

    97   struct MapTraits {

    98     typedef False ReferenceMapTag;

    99 

   100     typedef typename Map::Key Key;

   101     typedef typename Map::Value Value;

   102 

   103     typedef Value ConstReturnValue;

   104     typedef Value& ReturnValue;

   105   };

   106 

   107   template <typename Map>

   108   struct MapTraits<

   109     Map, typename enable_if<typename Map::ReferenceMapTag, void>::type > 

   110   {

   111     typedef True ReferenceMapTag;

   112     

   113     typedef typename Map::Key Key;

   114     typedef typename Map::Value Value;

   115 

   116     typedef typename Map::ConstReference ConstReturnValue;

   117     typedef typename Map::Reference ReturnValue;

   118 

   119     typedef typename Map::ConstReference ConstReference; 

   120     typedef typename Map::Reference Reference;

   121  };

   122 

   123   // Indicators for the tags

   124 

   125   template <typename Graph, typename Enable = void>

   126   struct NodeNumTagIndicator {

   127     static const bool value = false;

   128   };

   129 

   130   template <typename Graph>

   131   struct NodeNumTagIndicator<

   132     Graph, 

   133     typename enable_if<typename Graph::NodeNumTag, void>::type

   134   > {

   135     static const bool value = true;

   136   };

   137 

   138   template <typename Graph, typename Enable = void>

   139   struct EdgeNumTagIndicator {

   140     static const bool value = false;

   141   };

   142 

   143   template <typename Graph>

   144   struct EdgeNumTagIndicator<

   145     Graph, 

   146     typename enable_if<typename Graph::EdgeNumTag, void>::type

   147   > {

   148     static const bool value = true;

   149   };

   150 

   151   template <typename Graph, typename Enable = void>

   152   struct FindEdgeTagIndicator {

   153     static const bool value = false;

   154   };

   155 

   156   template <typename Graph>

   157   struct FindEdgeTagIndicator<

   158     Graph, 

   159     typename enable_if<typename Graph::FindEdgeTag, void>::type

   160   > {

   161     static const bool value = true;

   162   };

   163 

   164 

   165 

   166 }

   167 

   168 #endif // LEMON_MAPS_H
lemon-0.x