[2126] | 1 | /* -*- C++ -*- |
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| 2 | * |
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| 3 | * This file is a part of LEMON, a generic C++ optimization library |
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| 4 | * |
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| 5 | * Copyright (C) 2003-2006 |
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| 6 | * Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
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| 7 | * (Egervary Research Group on Combinatorial Optimization, EGRES). |
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| 8 | * |
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| 9 | * Permission to use, modify and distribute this software is granted |
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| 10 | * provided that this copyright notice appears in all copies. For |
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| 11 | * precise terms see the accompanying LICENSE file. |
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| 12 | * |
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| 13 | * This software is provided "AS IS" with no warranty of any kind, |
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| 14 | * express or implied, and with no claim as to its suitability for any |
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| 15 | * purpose. |
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| 16 | * |
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| 17 | */ |
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| 18 | |
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| 19 | ///\ingroup graph_concepts |
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| 20 | ///\file |
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| 21 | ///\brief The concept of the graph components. |
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| 22 | |
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| 23 | |
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| 24 | #ifndef LEMON_CONCEPT_GRAPH_COMPONENTS_H |
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| 25 | #define LEMON_CONCEPT_GRAPH_COMPONENTS_H |
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| 26 | |
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| 27 | #include <lemon/bits/invalid.h> |
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| 28 | #include <lemon/concept/maps.h> |
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| 29 | |
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| 30 | #include <lemon/bits/alteration_notifier.h> |
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| 31 | |
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| 32 | namespace lemon { |
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| 33 | namespace concept { |
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| 34 | |
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| 35 | /// \brief Skeleton class for graph Node and Edge types |
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| 36 | /// |
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| 37 | /// This class describes the interface of Node and Edge (and UEdge |
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| 38 | /// in undirected graphs) subtypes of graph types. |
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| 39 | /// |
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| 40 | /// \note This class is a template class so that we can use it to |
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| 41 | /// create graph skeleton classes. The reason for this is than Node |
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| 42 | /// and Edge types should \em not derive from the same base class. |
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| 43 | /// For Node you should instantiate it with character 'n' and for Edge |
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| 44 | /// with 'e'. |
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| 45 | |
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| 46 | #ifndef DOXYGEN |
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| 47 | template <char _selector = '0'> |
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| 48 | #endif |
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| 49 | class GraphItem { |
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| 50 | public: |
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| 51 | /// \brief Default constructor. |
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| 52 | /// |
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| 53 | /// \warning The default constructor is not required to set |
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| 54 | /// the item to some well-defined value. So you should consider it |
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| 55 | /// as uninitialized. |
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| 56 | GraphItem() {} |
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| 57 | /// \brief Copy constructor. |
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| 58 | /// |
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| 59 | /// Copy constructor. |
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| 60 | /// |
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| 61 | GraphItem(const GraphItem &) {} |
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| 62 | /// \brief Invalid constructor \& conversion. |
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| 63 | /// |
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| 64 | /// This constructor initializes the item to be invalid. |
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| 65 | /// \sa Invalid for more details. |
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| 66 | GraphItem(Invalid) {} |
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| 67 | /// \brief Assign operator for nodes. |
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| 68 | /// |
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| 69 | /// The nodes are assignable. |
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| 70 | /// |
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| 71 | GraphItem& operator=(GraphItem const&) { return *this; } |
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| 72 | /// \brief Equality operator. |
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| 73 | /// |
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| 74 | /// Two iterators are equal if and only if they represents the |
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| 75 | /// same node in the graph or both are invalid. |
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| 76 | bool operator==(GraphItem) const { return false; } |
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| 77 | /// \brief Inequality operator. |
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| 78 | /// |
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| 79 | /// \sa operator==(const Node& n) |
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| 80 | /// |
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| 81 | bool operator!=(GraphItem) const { return false; } |
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| 82 | |
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| 83 | /// \brief Artificial ordering operator. |
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| 84 | /// |
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| 85 | /// To allow the use of graph descriptors as key type in std::map or |
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| 86 | /// similar associative container we require this. |
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| 87 | /// |
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| 88 | /// \note This operator only have to define some strict ordering of |
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| 89 | /// the items; this order has nothing to do with the iteration |
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| 90 | /// ordering of the items. |
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| 91 | bool operator<(GraphItem) const { return false; } |
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| 92 | |
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| 93 | template<typename _GraphItem> |
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| 94 | struct Constraints { |
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| 95 | void constraints() { |
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| 96 | _GraphItem i1; |
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| 97 | _GraphItem i2 = i1; |
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| 98 | _GraphItem i3 = INVALID; |
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| 99 | |
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| 100 | i1 = i2 = i3; |
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| 101 | |
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| 102 | bool b; |
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| 103 | // b = (ia == ib) && (ia != ib) && (ia < ib); |
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| 104 | b = (ia == ib) && (ia != ib); |
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| 105 | b = (ia == INVALID) && (ib != INVALID); |
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| 106 | b = (ia < ib); |
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| 107 | } |
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| 108 | |
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| 109 | const _GraphItem &ia; |
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| 110 | const _GraphItem &ib; |
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| 111 | }; |
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| 112 | }; |
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| 113 | |
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| 114 | /// \brief An empty base graph class. |
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| 115 | /// |
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| 116 | /// This class provides the minimal set of features needed for a graph |
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| 117 | /// structure. All graph concepts have to be conform to this base |
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| 118 | /// graph. It just provides types for nodes and edges and functions to |
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| 119 | /// get the source and the target of the edges. |
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| 120 | class BaseGraphComponent { |
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| 121 | public: |
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| 122 | |
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| 123 | typedef BaseGraphComponent Graph; |
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| 124 | |
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| 125 | /// \brief Node class of the graph. |
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| 126 | /// |
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| 127 | /// This class represents the Nodes of the graph. |
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| 128 | /// |
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| 129 | typedef GraphItem<'n'> Node; |
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| 130 | |
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| 131 | /// \brief Edge class of the graph. |
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| 132 | /// |
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| 133 | /// This class represents the Edges of the graph. |
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| 134 | /// |
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| 135 | typedef GraphItem<'e'> Edge; |
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| 136 | |
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| 137 | /// \brief Gives back the target node of an edge. |
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| 138 | /// |
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| 139 | /// Gives back the target node of an edge. |
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| 140 | /// |
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| 141 | Node target(const Edge&) const { return INVALID;} |
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| 142 | |
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| 143 | /// \brief Gives back the source node of an edge. |
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| 144 | /// |
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| 145 | /// Gives back the source node of an edge. |
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| 146 | /// |
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| 147 | Node source(const Edge&) const { return INVALID;} |
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| 148 | |
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| 149 | /// \brief Gives back the opposite node on the given edge. |
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| 150 | /// |
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| 151 | /// Gives back the opposite node on the given edge. |
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| 152 | Node oppositeNode(const Node&, const Edge&) const { |
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| 153 | return INVALID; |
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| 154 | } |
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| 155 | |
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| 156 | template <typename _Graph> |
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| 157 | struct Constraints { |
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| 158 | typedef typename _Graph::Node Node; |
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| 159 | typedef typename _Graph::Edge Edge; |
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| 160 | |
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| 161 | void constraints() { |
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| 162 | checkConcept<GraphItem<'n'>, Node>(); |
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| 163 | checkConcept<GraphItem<'e'>, Edge>(); |
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| 164 | { |
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| 165 | Node n; |
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| 166 | Edge e(INVALID); |
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| 167 | n = graph.source(e); |
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| 168 | n = graph.target(e); |
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| 169 | n = graph.oppositeNode(n, e); |
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| 170 | } |
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| 171 | } |
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| 172 | |
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| 173 | const _Graph& graph; |
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| 174 | }; |
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| 175 | }; |
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| 176 | |
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| 177 | /// \brief An empty base undirected graph class. |
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| 178 | /// |
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| 179 | /// This class provides the minimal set of features needed for an |
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| 180 | /// undirected graph structure. All undirected graph concepts have |
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| 181 | /// to be conform to this base graph. It just provides types for |
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| 182 | /// nodes, edges and undirected edges and functions to get the |
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| 183 | /// source and the target of the edges and undirected edges, |
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| 184 | /// conversion from edges to undirected edges and function to get |
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| 185 | /// both direction of the undirected edges. |
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| 186 | class BaseUGraphComponent : public BaseGraphComponent { |
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| 187 | public: |
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| 188 | typedef BaseGraphComponent::Node Node; |
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| 189 | typedef BaseGraphComponent::Edge Edge; |
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| 190 | /// \brief Undirected edge class of the graph. |
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| 191 | /// |
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| 192 | /// This class represents the undirected edges of the graph. |
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| 193 | /// The undirected graphs can be used as a directed graph which |
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| 194 | /// for each edge contains the opposite edge too so the graph is |
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| 195 | /// bidirected. The undirected edge represents two opposite |
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| 196 | /// directed edges. |
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| 197 | class UEdge : public GraphItem<'u'> { |
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| 198 | public: |
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| 199 | typedef GraphItem<'u'> Parent; |
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| 200 | /// \brief Default constructor. |
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| 201 | /// |
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| 202 | /// \warning The default constructor is not required to set |
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| 203 | /// the item to some well-defined value. So you should consider it |
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| 204 | /// as uninitialized. |
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| 205 | UEdge() {} |
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| 206 | /// \brief Copy constructor. |
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| 207 | /// |
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| 208 | /// Copy constructor. |
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| 209 | /// |
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| 210 | UEdge(const UEdge &) : Parent() {} |
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| 211 | /// \brief Invalid constructor \& conversion. |
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| 212 | /// |
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| 213 | /// This constructor initializes the item to be invalid. |
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| 214 | /// \sa Invalid for more details. |
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| 215 | UEdge(Invalid) {} |
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| 216 | /// \brief Converter from edge to undirected edge. |
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| 217 | /// |
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| 218 | /// Besides the core graph item functionality each edge should |
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| 219 | /// be convertible to the represented undirected edge. |
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| 220 | UEdge(const Edge&) {} |
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| 221 | }; |
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| 222 | |
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| 223 | /// \brief Returns the direction of the edge. |
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| 224 | /// |
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| 225 | /// Returns the direction of the edge. Each edge represents an |
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| 226 | /// undirected edge with a direction. It gives back the |
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| 227 | /// direction. |
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| 228 | bool direction(const Edge&) const { return true; } |
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| 229 | |
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| 230 | /// \brief Returns the directed edge. |
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| 231 | /// |
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| 232 | /// Returns the directed edge from its direction and the |
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| 233 | /// represented undirected edge. |
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| 234 | Edge direct(const UEdge&, bool) const { return INVALID;} |
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| 235 | |
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| 236 | /// \brief Returns the directed edge. |
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| 237 | /// |
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| 238 | /// Returns the directed edge from its source and the |
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| 239 | /// represented undirected edge. |
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| 240 | Edge direct(const UEdge&, const Node&) const { return INVALID;} |
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| 241 | |
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| 242 | /// \brief Returns the opposite edge. |
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| 243 | /// |
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| 244 | /// Returns the opposite edge. It is the edge representing the |
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| 245 | /// same undirected edge and has opposite direction. |
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| 246 | Edge oppositeEdge(const Edge&) const { return INVALID;} |
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| 247 | |
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| 248 | /// \brief Gives back the target node of an undirected edge. |
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| 249 | /// |
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| 250 | /// Gives back the target node of an undirected edge. The name |
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| 251 | /// target is a little confusing because the undirected edge |
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| 252 | /// does not have target but it just means that one of the end |
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| 253 | /// node. |
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| 254 | Node target(const UEdge&) const { return INVALID;} |
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| 255 | |
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| 256 | /// \brief Gives back the source node of an undirected edge. |
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| 257 | /// |
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| 258 | /// Gives back the source node of an undirected edge. The name |
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| 259 | /// source is a little confusing because the undirected edge |
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| 260 | /// does not have source but it just means that one of the end |
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| 261 | /// node. |
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| 262 | Node source(const UEdge&) const { return INVALID;} |
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| 263 | |
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| 264 | template <typename _Graph> |
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| 265 | struct Constraints { |
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| 266 | typedef typename _Graph::Node Node; |
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| 267 | typedef typename _Graph::Edge Edge; |
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| 268 | typedef typename _Graph::UEdge UEdge; |
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| 269 | |
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| 270 | void constraints() { |
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| 271 | checkConcept<BaseGraphComponent, _Graph>(); |
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| 272 | checkConcept<GraphItem<'u'>, UEdge>(); |
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| 273 | { |
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| 274 | Node n; |
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| 275 | UEdge ue(INVALID); |
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| 276 | Edge e; |
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| 277 | n = graph.source(ue); |
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| 278 | n = graph.target(ue); |
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| 279 | e = graph.direct(ue, true); |
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| 280 | e = graph.direct(ue, n); |
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| 281 | e = graph.oppositeEdge(e); |
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| 282 | ue = e; |
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| 283 | bool d = graph.direction(e); |
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| 284 | ignore_unused_variable_warning(d); |
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| 285 | } |
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| 286 | } |
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| 287 | |
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| 288 | const _Graph& graph; |
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| 289 | }; |
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| 290 | |
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| 291 | }; |
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| 292 | |
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| 293 | /// \brief An empty iterable base graph class. |
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| 294 | /// |
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| 295 | /// This class provides beside the core graph features |
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| 296 | /// core iterable interface for the graph structure. |
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| 297 | /// Most of the base graphs should be conform to this concept. |
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| 298 | template <typename _Base = BaseGraphComponent> |
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| 299 | class BaseIterableGraphComponent : public _Base { |
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| 300 | public: |
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| 301 | |
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| 302 | typedef _Base Base; |
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| 303 | typedef typename Base::Node Node; |
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| 304 | typedef typename Base::Edge Edge; |
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| 305 | |
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| 306 | /// \brief Gives back the first node in the iterating order. |
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| 307 | /// |
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| 308 | /// Gives back the first node in the iterating order. |
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| 309 | /// |
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| 310 | void first(Node&) const {} |
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| 311 | |
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| 312 | /// \brief Gives back the next node in the iterating order. |
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| 313 | /// |
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| 314 | /// Gives back the next node in the iterating order. |
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| 315 | /// |
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| 316 | void next(Node&) const {} |
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| 317 | |
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| 318 | /// \brief Gives back the first edge in the iterating order. |
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| 319 | /// |
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| 320 | /// Gives back the first edge in the iterating order. |
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| 321 | /// |
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| 322 | void first(Edge&) const {} |
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| 323 | |
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| 324 | /// \brief Gives back the next edge in the iterating order. |
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| 325 | /// |
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| 326 | /// Gives back the next edge in the iterating order. |
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| 327 | /// |
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| 328 | void next(Edge&) const {} |
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| 329 | |
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| 330 | |
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| 331 | /// \brief Gives back the first of the edges point to the given |
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| 332 | /// node. |
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| 333 | /// |
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| 334 | /// Gives back the first of the edges point to the given node. |
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| 335 | /// |
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| 336 | void firstIn(Edge&, const Node&) const {} |
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| 337 | |
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| 338 | /// \brief Gives back the next of the edges points to the given |
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| 339 | /// node. |
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| 340 | /// |
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| 341 | /// Gives back the next of the edges points to the given node. |
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| 342 | /// |
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| 343 | void nextIn(Edge&) const {} |
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| 344 | |
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| 345 | /// \brief Gives back the first of the edges start from the |
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| 346 | /// given node. |
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| 347 | /// |
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| 348 | /// Gives back the first of the edges start from the given node. |
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| 349 | /// |
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| 350 | void firstOut(Edge&, const Node&) const {} |
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| 351 | |
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| 352 | /// \brief Gives back the next of the edges start from the given |
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| 353 | /// node. |
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| 354 | /// |
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| 355 | /// Gives back the next of the edges start from the given node. |
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| 356 | /// |
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| 357 | void nextOut(Edge&) const {} |
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| 358 | |
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| 359 | |
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| 360 | template <typename _Graph> |
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| 361 | struct Constraints { |
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| 362 | |
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| 363 | void constraints() { |
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| 364 | checkConcept< BaseGraphComponent, _Graph >(); |
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| 365 | typename _Graph::Node node; |
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| 366 | typename _Graph::Edge edge; |
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| 367 | { |
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| 368 | graph.first(node); |
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| 369 | graph.next(node); |
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| 370 | } |
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| 371 | { |
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| 372 | graph.first(edge); |
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| 373 | graph.next(edge); |
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| 374 | } |
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| 375 | { |
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| 376 | graph.firstIn(edge, node); |
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| 377 | graph.nextIn(edge); |
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| 378 | } |
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| 379 | { |
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| 380 | graph.firstOut(edge, node); |
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| 381 | graph.nextOut(edge); |
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| 382 | } |
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| 383 | } |
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| 384 | |
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| 385 | const _Graph& graph; |
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| 386 | }; |
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| 387 | }; |
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| 388 | |
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| 389 | /// \brief An empty iterable base undirected graph class. |
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| 390 | /// |
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| 391 | /// This class provides beside the core undirceted graph features |
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| 392 | /// core iterable interface for the undirected graph structure. |
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| 393 | /// Most of the base undirected graphs should be conform to this |
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| 394 | /// concept. |
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| 395 | template <typename _Base = BaseUGraphComponent> |
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| 396 | class BaseIterableUGraphComponent |
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| 397 | : public BaseIterableGraphComponent<_Base> { |
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| 398 | public: |
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| 399 | |
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| 400 | typedef _Base Base; |
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| 401 | typedef typename Base::UEdge UEdge; |
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| 402 | typedef typename Base::Node Node; |
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| 403 | |
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| 404 | using BaseIterableGraphComponent<_Base>::first; |
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| 405 | using BaseIterableGraphComponent<_Base>::next; |
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| 406 | |
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| 407 | /// \brief Gives back the first undirected edge in the iterating |
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| 408 | /// order. |
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| 409 | /// |
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| 410 | /// Gives back the first undirected edge in the iterating order. |
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| 411 | /// |
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| 412 | void first(UEdge&) const {} |
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| 413 | |
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| 414 | /// \brief Gives back the next undirected edge in the iterating |
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| 415 | /// order. |
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| 416 | /// |
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| 417 | /// Gives back the next undirected edge in the iterating order. |
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| 418 | /// |
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| 419 | void next(UEdge&) const {} |
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| 420 | |
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| 421 | |
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| 422 | /// \brief Gives back the first of the undirected edges from the |
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| 423 | /// given node. |
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| 424 | /// |
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| 425 | /// Gives back the first of the undirected edges from the given |
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| 426 | /// node. The bool parameter gives back that direction which |
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| 427 | /// gives a good direction of the uedge so the source of the |
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| 428 | /// directed edge is the given node. |
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| 429 | void firstInc(UEdge&, bool&, const Node&) const {} |
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| 430 | |
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| 431 | /// \brief Gives back the next of the undirected edges from the |
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| 432 | /// given node. |
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| 433 | /// |
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| 434 | /// Gives back the next of the undirected edges from the given |
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| 435 | /// node. The bool parameter should be used as the \c firstInc() |
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| 436 | /// use it. |
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| 437 | void nextInc(UEdge&, bool&) const {} |
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| 438 | |
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| 439 | template <typename _Graph> |
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| 440 | struct Constraints { |
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| 441 | |
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| 442 | void constraints() { |
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| 443 | checkConcept<Base, _Graph >(); |
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| 444 | checkConcept<BaseIterableGraphComponent<Base>, _Graph>(); |
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| 445 | typename _Graph::Node node; |
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| 446 | typename _Graph::UEdge uedge; |
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| 447 | bool dir; |
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| 448 | { |
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| 449 | graph.first(uedge); |
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| 450 | graph.next(uedge); |
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| 451 | } |
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| 452 | { |
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| 453 | graph.firstInc(uedge, dir, node); |
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| 454 | graph.nextInc(uedge, dir); |
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| 455 | } |
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| 456 | } |
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| 457 | |
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| 458 | const _Graph& graph; |
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| 459 | }; |
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| 460 | }; |
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| 461 | |
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| 462 | /// \brief An empty idable base graph class. |
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| 463 | /// |
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| 464 | /// This class provides beside the core graph features |
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| 465 | /// core id functions for the graph structure. |
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| 466 | /// The most of the base graphs should be conform to this concept. |
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| 467 | /// The id's are unique and immutable. |
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| 468 | template <typename _Base = BaseGraphComponent> |
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| 469 | class IDableGraphComponent : public _Base { |
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| 470 | public: |
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| 471 | |
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| 472 | typedef _Base Base; |
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| 473 | typedef typename Base::Node Node; |
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| 474 | typedef typename Base::Edge Edge; |
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| 475 | |
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| 476 | /// \brief Gives back an unique integer id for the Node. |
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| 477 | /// |
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| 478 | /// Gives back an unique integer id for the Node. |
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| 479 | /// |
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| 480 | int id(const Node&) const { return -1;} |
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| 481 | |
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| 482 | /// \brief Gives back the node by the unique id. |
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| 483 | /// |
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| 484 | /// Gives back the node by the unique id. |
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| 485 | /// If the graph does not contain node with the given id |
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| 486 | /// then the result of the function is undetermined. |
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| 487 | Node nodeFromId(int) const { return INVALID;} |
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| 488 | |
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| 489 | /// \brief Gives back an unique integer id for the Edge. |
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| 490 | /// |
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| 491 | /// Gives back an unique integer id for the Edge. |
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| 492 | /// |
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| 493 | int id(const Edge&) const { return -1;} |
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| 494 | |
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| 495 | /// \brief Gives back the edge by the unique id. |
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| 496 | /// |
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| 497 | /// Gives back the edge by the unique id. |
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| 498 | /// If the graph does not contain edge with the given id |
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| 499 | /// then the result of the function is undetermined. |
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| 500 | Edge edgeFromId(int) const { return INVALID;} |
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| 501 | |
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| 502 | /// \brief Gives back an integer greater or equal to the maximum |
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| 503 | /// Node id. |
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| 504 | /// |
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| 505 | /// Gives back an integer greater or equal to the maximum Node |
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| 506 | /// id. |
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| 507 | int maxNodeId() const { return -1;} |
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| 508 | |
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| 509 | /// \brief Gives back an integer greater or equal to the maximum |
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| 510 | /// Edge id. |
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| 511 | /// |
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| 512 | /// Gives back an integer greater or equal to the maximum Edge |
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| 513 | /// id. |
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| 514 | int maxEdgeId() const { return -1;} |
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| 515 | |
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| 516 | template <typename _Graph> |
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| 517 | struct Constraints { |
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| 518 | |
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| 519 | void constraints() { |
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| 520 | checkConcept< BaseGraphComponent, _Graph >(); |
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| 521 | typename _Graph::Node node; |
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| 522 | int nid = graph.id(node); |
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| 523 | nid = graph.id(node); |
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| 524 | node = graph.nodeFromId(nid); |
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| 525 | typename _Graph::Edge edge; |
---|
| 526 | int eid = graph.id(edge); |
---|
| 527 | eid = graph.id(edge); |
---|
| 528 | edge = graph.edgeFromId(eid); |
---|
| 529 | |
---|
| 530 | nid = graph.maxNodeId(); |
---|
| 531 | ignore_unused_variable_warning(nid); |
---|
| 532 | eid = graph.maxEdgeId(); |
---|
| 533 | ignore_unused_variable_warning(eid); |
---|
| 534 | } |
---|
| 535 | |
---|
| 536 | const _Graph& graph; |
---|
| 537 | }; |
---|
| 538 | }; |
---|
| 539 | |
---|
| 540 | /// \brief An empty idable base undirected graph class. |
---|
| 541 | /// |
---|
| 542 | /// This class provides beside the core undirected graph features |
---|
| 543 | /// core id functions for the undirected graph structure. The |
---|
| 544 | /// most of the base undirected graphs should be conform to this |
---|
| 545 | /// concept. The id's are unique and immutable. |
---|
| 546 | template <typename _Base = BaseUGraphComponent> |
---|
| 547 | class IDableUGraphComponent : public IDableGraphComponent<_Base> { |
---|
| 548 | public: |
---|
| 549 | |
---|
| 550 | typedef _Base Base; |
---|
| 551 | typedef typename Base::UEdge UEdge; |
---|
| 552 | |
---|
| 553 | using IDableGraphComponent<_Base>::id; |
---|
| 554 | |
---|
| 555 | /// \brief Gives back an unique integer id for the UEdge. |
---|
| 556 | /// |
---|
| 557 | /// Gives back an unique integer id for the UEdge. |
---|
| 558 | /// |
---|
| 559 | int id(const UEdge&) const { return -1;} |
---|
| 560 | |
---|
| 561 | /// \brief Gives back the undirected edge by the unique id. |
---|
| 562 | /// |
---|
| 563 | /// Gives back the undirected edge by the unique id. If the |
---|
| 564 | /// graph does not contain edge with the given id then the |
---|
| 565 | /// result of the function is undetermined. |
---|
| 566 | UEdge uEdgeFromId(int) const { return INVALID;} |
---|
| 567 | |
---|
| 568 | /// \brief Gives back an integer greater or equal to the maximum |
---|
| 569 | /// UEdge id. |
---|
| 570 | /// |
---|
| 571 | /// Gives back an integer greater or equal to the maximum UEdge |
---|
| 572 | /// id. |
---|
| 573 | int maxUEdgeId() const { return -1;} |
---|
| 574 | |
---|
| 575 | template <typename _Graph> |
---|
| 576 | struct Constraints { |
---|
| 577 | |
---|
| 578 | void constraints() { |
---|
| 579 | checkConcept<Base, _Graph >(); |
---|
| 580 | checkConcept<IDableGraphComponent<Base>, _Graph >(); |
---|
| 581 | typename _Graph::UEdge uedge; |
---|
| 582 | int ueid = graph.id(uedge); |
---|
| 583 | ueid = graph.id(uedge); |
---|
| 584 | uedge = graph.uEdgeFromId(ueid); |
---|
| 585 | ueid = graph.maxUEdgeId(); |
---|
| 586 | ignore_unused_variable_warning(ueid); |
---|
| 587 | } |
---|
| 588 | |
---|
| 589 | const _Graph& graph; |
---|
| 590 | }; |
---|
| 591 | }; |
---|
| 592 | |
---|
| 593 | /// \brief An empty extendable base graph class. |
---|
| 594 | /// |
---|
| 595 | /// This class provides beside the core graph features |
---|
| 596 | /// core graph extend interface for the graph structure. |
---|
| 597 | /// The most of the base graphs should be conform to this concept. |
---|
| 598 | template <typename _Base = BaseGraphComponent> |
---|
| 599 | class BaseExtendableGraphComponent : public _Base { |
---|
| 600 | public: |
---|
| 601 | |
---|
| 602 | typedef typename _Base::Node Node; |
---|
| 603 | typedef typename _Base::Edge Edge; |
---|
| 604 | |
---|
| 605 | /// \brief Adds a new node to the graph. |
---|
| 606 | /// |
---|
| 607 | /// Adds a new node to the graph. |
---|
| 608 | /// |
---|
| 609 | Node addNode() { |
---|
| 610 | return INVALID; |
---|
| 611 | } |
---|
| 612 | |
---|
| 613 | /// \brief Adds a new edge connects the given two nodes. |
---|
| 614 | /// |
---|
| 615 | /// Adds a new edge connects the the given two nodes. |
---|
| 616 | Edge addEdge(const Node&, const Node&) { |
---|
| 617 | return INVALID; |
---|
| 618 | } |
---|
| 619 | |
---|
| 620 | template <typename _Graph> |
---|
| 621 | struct Constraints { |
---|
| 622 | void constraints() { |
---|
| 623 | typename _Graph::Node node_a, node_b; |
---|
| 624 | node_a = graph.addNode(); |
---|
| 625 | node_b = graph.addNode(); |
---|
| 626 | typename _Graph::Edge edge; |
---|
| 627 | edge = graph.addEdge(node_a, node_b); |
---|
| 628 | } |
---|
| 629 | |
---|
| 630 | _Graph& graph; |
---|
| 631 | }; |
---|
| 632 | }; |
---|
| 633 | |
---|
| 634 | /// \brief An empty extendable base undirected graph class. |
---|
| 635 | /// |
---|
| 636 | /// This class provides beside the core undirected graph features |
---|
| 637 | /// core undircted graph extend interface for the graph structure. |
---|
| 638 | /// The most of the base graphs should be conform to this concept. |
---|
| 639 | template <typename _Base = BaseUGraphComponent> |
---|
| 640 | class BaseExtendableUGraphComponent : public _Base { |
---|
| 641 | public: |
---|
| 642 | |
---|
| 643 | typedef typename _Base::Node Node; |
---|
| 644 | typedef typename _Base::UEdge UEdge; |
---|
| 645 | |
---|
| 646 | /// \brief Adds a new node to the graph. |
---|
| 647 | /// |
---|
| 648 | /// Adds a new node to the graph. |
---|
| 649 | /// |
---|
| 650 | Node addNode() { |
---|
| 651 | return INVALID; |
---|
| 652 | } |
---|
| 653 | |
---|
| 654 | /// \brief Adds a new edge connects the given two nodes. |
---|
| 655 | /// |
---|
| 656 | /// Adds a new edge connects the the given two nodes. |
---|
| 657 | UEdge addEdge(const Node&, const Node&) { |
---|
| 658 | return INVALID; |
---|
| 659 | } |
---|
| 660 | |
---|
| 661 | template <typename _Graph> |
---|
| 662 | struct Constraints { |
---|
| 663 | void constraints() { |
---|
| 664 | typename _Graph::Node node_a, node_b; |
---|
| 665 | node_a = graph.addNode(); |
---|
| 666 | node_b = graph.addNode(); |
---|
| 667 | typename _Graph::UEdge uedge; |
---|
| 668 | uedge = graph.addUEdge(node_a, node_b); |
---|
| 669 | } |
---|
| 670 | |
---|
| 671 | _Graph& graph; |
---|
| 672 | }; |
---|
| 673 | }; |
---|
| 674 | |
---|
| 675 | /// \brief An empty erasable base graph class. |
---|
| 676 | /// |
---|
| 677 | /// This class provides beside the core graph features |
---|
| 678 | /// core erase functions for the graph structure. |
---|
| 679 | /// The most of the base graphs should be conform to this concept. |
---|
| 680 | template <typename _Base = BaseGraphComponent> |
---|
| 681 | class BaseErasableGraphComponent : public _Base { |
---|
| 682 | public: |
---|
| 683 | |
---|
| 684 | typedef _Base Base; |
---|
| 685 | typedef typename Base::Node Node; |
---|
| 686 | typedef typename Base::Edge Edge; |
---|
| 687 | |
---|
| 688 | /// \brief Erase a node from the graph. |
---|
| 689 | /// |
---|
| 690 | /// Erase a node from the graph. This function should not |
---|
| 691 | /// erase edges connecting to the Node. |
---|
| 692 | void erase(const Node&) {} |
---|
| 693 | |
---|
| 694 | /// \brief Erase an edge from the graph. |
---|
| 695 | /// |
---|
| 696 | /// Erase an edge from the graph. |
---|
| 697 | /// |
---|
| 698 | void erase(const Edge&) {} |
---|
| 699 | |
---|
| 700 | template <typename _Graph> |
---|
| 701 | struct Constraints { |
---|
| 702 | void constraints() { |
---|
| 703 | typename _Graph::Node node; |
---|
| 704 | graph.erase(node); |
---|
| 705 | typename _Graph::Edge edge; |
---|
| 706 | graph.erase(edge); |
---|
| 707 | } |
---|
| 708 | |
---|
| 709 | _Graph& graph; |
---|
| 710 | }; |
---|
| 711 | }; |
---|
| 712 | |
---|
| 713 | /// \brief An empty erasable base undirected graph class. |
---|
| 714 | /// |
---|
| 715 | /// This class provides beside the core undirected graph features |
---|
| 716 | /// core erase functions for the undirceted graph structure. |
---|
| 717 | template <typename _Base = BaseUGraphComponent> |
---|
| 718 | class BaseErasableUGraphComponent : public _Base { |
---|
| 719 | public: |
---|
| 720 | |
---|
| 721 | typedef _Base Base; |
---|
| 722 | typedef typename Base::Node Node; |
---|
| 723 | typedef typename Base::UEdge UEdge; |
---|
| 724 | |
---|
| 725 | /// \brief Erase a node from the graph. |
---|
| 726 | /// |
---|
| 727 | /// Erase a node from the graph. This function should not |
---|
| 728 | /// erase edges connecting to the Node. |
---|
| 729 | void erase(const Node&) {} |
---|
| 730 | |
---|
| 731 | /// \brief Erase an edge from the graph. |
---|
| 732 | /// |
---|
| 733 | /// Erase an edge from the graph. |
---|
| 734 | /// |
---|
| 735 | void erase(const UEdge&) {} |
---|
| 736 | |
---|
| 737 | template <typename _Graph> |
---|
| 738 | struct Constraints { |
---|
| 739 | void constraints() { |
---|
| 740 | typename _Graph::Node node; |
---|
| 741 | graph.erase(node); |
---|
| 742 | typename _Graph::Edge edge; |
---|
| 743 | graph.erase(edge); |
---|
| 744 | } |
---|
| 745 | |
---|
| 746 | _Graph& graph; |
---|
| 747 | }; |
---|
| 748 | }; |
---|
| 749 | |
---|
| 750 | /// \brief An empty clearable base graph class. |
---|
| 751 | /// |
---|
| 752 | /// This class provides beside the core graph features |
---|
| 753 | /// core clear functions for the graph structure. |
---|
| 754 | /// The most of the base graphs should be conform to this concept. |
---|
| 755 | template <typename _Base = BaseGraphComponent> |
---|
| 756 | class BaseClearableGraphComponent : public _Base { |
---|
| 757 | public: |
---|
| 758 | |
---|
| 759 | /// \brief Erase all the nodes and edges from the graph. |
---|
| 760 | /// |
---|
| 761 | /// Erase all the nodes and edges from the graph. |
---|
| 762 | /// |
---|
| 763 | void clear() {} |
---|
| 764 | |
---|
| 765 | template <typename _Graph> |
---|
| 766 | struct Constraints { |
---|
| 767 | void constraints() { |
---|
| 768 | graph.clear(); |
---|
| 769 | } |
---|
| 770 | |
---|
| 771 | _Graph graph; |
---|
| 772 | }; |
---|
| 773 | }; |
---|
| 774 | |
---|
| 775 | /// \brief An empty clearable base undirected graph class. |
---|
| 776 | /// |
---|
| 777 | /// This class provides beside the core undirected graph features |
---|
| 778 | /// core clear functions for the undirected graph structure. |
---|
| 779 | /// The most of the base graphs should be conform to this concept. |
---|
| 780 | template <typename _Base = BaseUGraphComponent> |
---|
| 781 | class BaseClearableUGraphComponent : public _Base { |
---|
| 782 | public: |
---|
| 783 | |
---|
| 784 | /// \brief Erase all the nodes and undirected edges from the graph. |
---|
| 785 | /// |
---|
| 786 | /// Erase all the nodes and undirected edges from the graph. |
---|
| 787 | /// |
---|
| 788 | void clear() {} |
---|
| 789 | |
---|
| 790 | template <typename _Graph> |
---|
| 791 | struct Constraints { |
---|
| 792 | void constraints() { |
---|
| 793 | graph.clear(); |
---|
| 794 | } |
---|
| 795 | |
---|
| 796 | _Graph graph; |
---|
| 797 | }; |
---|
| 798 | }; |
---|
| 799 | |
---|
| 800 | |
---|
| 801 | /// \brief Skeleton class for graph NodeIt and EdgeIt |
---|
| 802 | /// |
---|
| 803 | /// Skeleton class for graph NodeIt and EdgeIt. |
---|
| 804 | /// |
---|
| 805 | template <typename _Graph, typename _Item> |
---|
| 806 | class GraphItemIt : public _Item { |
---|
| 807 | public: |
---|
| 808 | /// \brief Default constructor. |
---|
| 809 | /// |
---|
| 810 | /// @warning The default constructor sets the iterator |
---|
| 811 | /// to an undefined value. |
---|
| 812 | GraphItemIt() {} |
---|
| 813 | /// \brief Copy constructor. |
---|
| 814 | /// |
---|
| 815 | /// Copy constructor. |
---|
| 816 | /// |
---|
| 817 | GraphItemIt(const GraphItemIt& ) {} |
---|
| 818 | /// \brief Sets the iterator to the first item. |
---|
| 819 | /// |
---|
| 820 | /// Sets the iterator to the first item of \c the graph. |
---|
| 821 | /// |
---|
| 822 | explicit GraphItemIt(const _Graph&) {} |
---|
| 823 | /// \brief Invalid constructor \& conversion. |
---|
| 824 | /// |
---|
| 825 | /// This constructor initializes the item to be invalid. |
---|
| 826 | /// \sa Invalid for more details. |
---|
| 827 | GraphItemIt(Invalid) {} |
---|
| 828 | /// \brief Assign operator for items. |
---|
| 829 | /// |
---|
| 830 | /// The items are assignable. |
---|
| 831 | /// |
---|
| 832 | GraphItemIt& operator=(const GraphItemIt&) { return *this; } |
---|
| 833 | /// \brief Next item. |
---|
| 834 | /// |
---|
| 835 | /// Assign the iterator to the next item. |
---|
| 836 | /// |
---|
| 837 | GraphItemIt& operator++() { return *this; } |
---|
| 838 | /// \brief Equality operator |
---|
| 839 | /// |
---|
| 840 | /// Two iterators are equal if and only if they point to the |
---|
| 841 | /// same object or both are invalid. |
---|
| 842 | bool operator==(const GraphItemIt&) const { return true;} |
---|
| 843 | /// \brief Inequality operator |
---|
| 844 | /// |
---|
| 845 | /// \sa operator==(Node n) |
---|
| 846 | /// |
---|
| 847 | bool operator!=(const GraphItemIt&) const { return true;} |
---|
| 848 | |
---|
| 849 | template<typename _GraphItemIt> |
---|
| 850 | struct Constraints { |
---|
| 851 | void constraints() { |
---|
| 852 | _GraphItemIt it1(g); |
---|
| 853 | _GraphItemIt it2; |
---|
| 854 | |
---|
| 855 | it2 = ++it1; |
---|
| 856 | ++it2 = it1; |
---|
| 857 | ++(++it1); |
---|
| 858 | |
---|
| 859 | _Item bi = it1; |
---|
| 860 | bi = it2; |
---|
| 861 | } |
---|
| 862 | _Graph& g; |
---|
| 863 | }; |
---|
| 864 | }; |
---|
| 865 | |
---|
| 866 | /// \brief Skeleton class for graph InEdgeIt and OutEdgeIt |
---|
| 867 | /// |
---|
| 868 | /// \note Because InEdgeIt and OutEdgeIt may not inherit from the same |
---|
| 869 | /// base class, the _selector is a additional template parameter. For |
---|
| 870 | /// InEdgeIt you should instantiate it with character 'i' and for |
---|
| 871 | /// OutEdgeIt with 'o'. |
---|
| 872 | template <typename _Graph, |
---|
| 873 | typename _Item = typename _Graph::Edge, |
---|
| 874 | typename _Base = typename _Graph::Node, |
---|
| 875 | char _selector = '0'> |
---|
| 876 | class GraphIncIt : public _Item { |
---|
| 877 | public: |
---|
| 878 | /// \brief Default constructor. |
---|
| 879 | /// |
---|
| 880 | /// @warning The default constructor sets the iterator |
---|
| 881 | /// to an undefined value. |
---|
| 882 | GraphIncIt() {} |
---|
| 883 | /// \brief Copy constructor. |
---|
| 884 | /// |
---|
| 885 | /// Copy constructor. |
---|
| 886 | /// |
---|
| 887 | GraphIncIt(GraphIncIt const& gi) : _Item(gi) {} |
---|
| 888 | /// \brief Sets the iterator to the first edge incoming into or outgoing |
---|
| 889 | /// from the node. |
---|
| 890 | /// |
---|
| 891 | /// Sets the iterator to the first edge incoming into or outgoing |
---|
| 892 | /// from the node. |
---|
| 893 | /// |
---|
| 894 | explicit GraphIncIt(const _Graph&, const _Base&) {} |
---|
| 895 | /// \brief Invalid constructor \& conversion. |
---|
| 896 | /// |
---|
| 897 | /// This constructor initializes the item to be invalid. |
---|
| 898 | /// \sa Invalid for more details. |
---|
| 899 | GraphIncIt(Invalid) {} |
---|
| 900 | /// \brief Assign operator for iterators. |
---|
| 901 | /// |
---|
| 902 | /// The iterators are assignable. |
---|
| 903 | /// |
---|
| 904 | GraphIncIt& operator=(GraphIncIt const&) { return *this; } |
---|
| 905 | /// \brief Next item. |
---|
| 906 | /// |
---|
| 907 | /// Assign the iterator to the next item. |
---|
| 908 | /// |
---|
| 909 | GraphIncIt& operator++() { return *this; } |
---|
| 910 | |
---|
| 911 | /// \brief Equality operator |
---|
| 912 | /// |
---|
| 913 | /// Two iterators are equal if and only if they point to the |
---|
| 914 | /// same object or both are invalid. |
---|
| 915 | bool operator==(const GraphIncIt&) const { return true;} |
---|
| 916 | |
---|
| 917 | /// \brief Inequality operator |
---|
| 918 | /// |
---|
| 919 | /// \sa operator==(Node n) |
---|
| 920 | /// |
---|
| 921 | bool operator!=(const GraphIncIt&) const { return true;} |
---|
| 922 | |
---|
| 923 | template <typename _GraphIncIt> |
---|
| 924 | struct Constraints { |
---|
| 925 | void constraints() { |
---|
| 926 | checkConcept<GraphItem<_selector>, _GraphIncIt>(); |
---|
| 927 | _GraphIncIt it1(graph, node); |
---|
| 928 | _GraphIncIt it2; |
---|
| 929 | |
---|
| 930 | it2 = ++it1; |
---|
| 931 | ++it2 = it1; |
---|
| 932 | ++(++it1); |
---|
| 933 | _Item e = it1; |
---|
| 934 | e = it2; |
---|
| 935 | |
---|
| 936 | } |
---|
| 937 | |
---|
| 938 | _Item edge; |
---|
| 939 | _Base node; |
---|
| 940 | _Graph graph; |
---|
| 941 | _GraphIncIt it; |
---|
| 942 | }; |
---|
| 943 | }; |
---|
| 944 | |
---|
| 945 | |
---|
| 946 | /// \brief An empty iterable graph class. |
---|
| 947 | /// |
---|
| 948 | /// This class provides beside the core graph features |
---|
| 949 | /// iterator based iterable interface for the graph structure. |
---|
| 950 | /// This concept is part of the GraphConcept. |
---|
| 951 | template <typename _Base = BaseGraphComponent> |
---|
| 952 | class IterableGraphComponent : public _Base { |
---|
| 953 | |
---|
| 954 | public: |
---|
| 955 | |
---|
| 956 | typedef _Base Base; |
---|
| 957 | typedef typename Base::Node Node; |
---|
| 958 | typedef typename Base::Edge Edge; |
---|
| 959 | |
---|
| 960 | typedef IterableGraphComponent Graph; |
---|
| 961 | |
---|
| 962 | |
---|
| 963 | /// \brief This iterator goes through each node. |
---|
| 964 | /// |
---|
| 965 | /// This iterator goes through each node. |
---|
| 966 | /// |
---|
| 967 | typedef GraphItemIt<Graph, Node> NodeIt; |
---|
| 968 | |
---|
| 969 | /// \brief This iterator goes through each node. |
---|
| 970 | /// |
---|
| 971 | /// This iterator goes through each node. |
---|
| 972 | /// |
---|
| 973 | typedef GraphItemIt<Graph, Edge> EdgeIt; |
---|
| 974 | |
---|
| 975 | /// \brief This iterator goes trough the incoming edges of a node. |
---|
| 976 | /// |
---|
| 977 | /// This iterator goes trough the \e inccoming edges of a certain node |
---|
| 978 | /// of a graph. |
---|
| 979 | typedef GraphIncIt<Graph, Edge, Node, 'i'> InEdgeIt; |
---|
| 980 | |
---|
| 981 | /// \brief This iterator goes trough the outgoing edges of a node. |
---|
| 982 | /// |
---|
| 983 | /// This iterator goes trough the \e outgoing edges of a certain node |
---|
| 984 | /// of a graph. |
---|
| 985 | typedef GraphIncIt<Graph, Edge, Node, 'o'> OutEdgeIt; |
---|
| 986 | |
---|
| 987 | /// \brief The base node of the iterator. |
---|
| 988 | /// |
---|
| 989 | /// Gives back the base node of the iterator. |
---|
| 990 | /// It is always the target of the pointed edge. |
---|
| 991 | Node baseNode(const InEdgeIt&) const { return INVALID; } |
---|
| 992 | |
---|
| 993 | /// \brief The running node of the iterator. |
---|
| 994 | /// |
---|
| 995 | /// Gives back the running node of the iterator. |
---|
| 996 | /// It is always the source of the pointed edge. |
---|
| 997 | Node runningNode(const InEdgeIt&) const { return INVALID; } |
---|
| 998 | |
---|
| 999 | /// \brief The base node of the iterator. |
---|
| 1000 | /// |
---|
| 1001 | /// Gives back the base node of the iterator. |
---|
| 1002 | /// It is always the source of the pointed edge. |
---|
| 1003 | Node baseNode(const OutEdgeIt&) const { return INVALID; } |
---|
| 1004 | |
---|
| 1005 | /// \brief The running node of the iterator. |
---|
| 1006 | /// |
---|
| 1007 | /// Gives back the running node of the iterator. |
---|
| 1008 | /// It is always the target of the pointed edge. |
---|
| 1009 | Node runningNode(const OutEdgeIt&) const { return INVALID; } |
---|
| 1010 | |
---|
| 1011 | /// \brief The opposite node on the given edge. |
---|
| 1012 | /// |
---|
| 1013 | /// Gives back the opposite on the given edge. |
---|
| 1014 | /// \todo It should not be here. |
---|
| 1015 | Node oppositeNode(const Node&, const Edge&) const { return INVALID; } |
---|
| 1016 | |
---|
| 1017 | |
---|
| 1018 | template <typename _Graph> |
---|
| 1019 | struct Constraints { |
---|
| 1020 | void constraints() { |
---|
| 1021 | checkConcept<Base, _Graph>(); |
---|
| 1022 | |
---|
| 1023 | checkConcept<GraphItemIt<_Graph, typename _Graph::Edge>, |
---|
| 1024 | typename _Graph::EdgeIt >(); |
---|
| 1025 | checkConcept<GraphItemIt<_Graph, typename _Graph::Node>, |
---|
| 1026 | typename _Graph::NodeIt >(); |
---|
| 1027 | checkConcept<GraphIncIt<_Graph, typename _Graph::Edge, |
---|
| 1028 | typename _Graph::Node, 'i'>, typename _Graph::InEdgeIt>(); |
---|
| 1029 | checkConcept<GraphIncIt<_Graph, typename _Graph::Edge, |
---|
| 1030 | typename _Graph::Node, 'o'>, typename _Graph::OutEdgeIt>(); |
---|
| 1031 | |
---|
| 1032 | typename _Graph::Node n; |
---|
| 1033 | typename _Graph::InEdgeIt ieit(INVALID); |
---|
| 1034 | typename _Graph::OutEdgeIt oeit(INVALID); |
---|
| 1035 | n = graph.baseNode(ieit); |
---|
| 1036 | n = graph.runningNode(ieit); |
---|
| 1037 | n = graph.baseNode(oeit); |
---|
| 1038 | n = graph.runningNode(oeit); |
---|
| 1039 | ignore_unused_variable_warning(n); |
---|
| 1040 | } |
---|
| 1041 | |
---|
| 1042 | const _Graph& graph; |
---|
| 1043 | |
---|
| 1044 | }; |
---|
| 1045 | }; |
---|
| 1046 | |
---|
| 1047 | /// \brief An empty iterable undirected graph class. |
---|
| 1048 | /// |
---|
| 1049 | /// This class provides beside the core graph features iterator |
---|
| 1050 | /// based iterable interface for the undirected graph structure. |
---|
| 1051 | /// This concept is part of the GraphConcept. |
---|
| 1052 | template <typename _Base = BaseUGraphComponent> |
---|
| 1053 | class IterableUGraphComponent : public IterableGraphComponent<_Base> { |
---|
| 1054 | public: |
---|
| 1055 | |
---|
| 1056 | typedef _Base Base; |
---|
| 1057 | typedef typename Base::Node Node; |
---|
| 1058 | typedef typename Base::Edge Edge; |
---|
| 1059 | typedef typename Base::UEdge UEdge; |
---|
| 1060 | |
---|
| 1061 | |
---|
| 1062 | typedef IterableUGraphComponent Graph; |
---|
| 1063 | using IterableGraphComponent<_Base>::baseNode; |
---|
| 1064 | using IterableGraphComponent<_Base>::runningNode; |
---|
| 1065 | |
---|
| 1066 | |
---|
| 1067 | /// \brief This iterator goes through each node. |
---|
| 1068 | /// |
---|
| 1069 | /// This iterator goes through each node. |
---|
| 1070 | typedef GraphItemIt<Graph, UEdge> UEdgeIt; |
---|
| 1071 | /// \brief This iterator goes trough the incident edges of a |
---|
| 1072 | /// node. |
---|
| 1073 | /// |
---|
| 1074 | /// This iterator goes trough the incident edges of a certain |
---|
| 1075 | /// node of a graph. |
---|
| 1076 | typedef GraphIncIt<Graph, UEdge, Node, 'u'> IncEdgeIt; |
---|
| 1077 | /// \brief The base node of the iterator. |
---|
| 1078 | /// |
---|
| 1079 | /// Gives back the base node of the iterator. |
---|
| 1080 | Node baseNode(const IncEdgeIt&) const { return INVALID; } |
---|
| 1081 | |
---|
| 1082 | /// \brief The running node of the iterator. |
---|
| 1083 | /// |
---|
| 1084 | /// Gives back the running node of the iterator. |
---|
| 1085 | Node runningNode(const IncEdgeIt&) const { return INVALID; } |
---|
| 1086 | |
---|
| 1087 | template <typename _Graph> |
---|
| 1088 | struct Constraints { |
---|
| 1089 | void constraints() { |
---|
| 1090 | checkConcept<Base, _Graph>(); |
---|
| 1091 | checkConcept<IterableGraphComponent<Base>, _Graph>(); |
---|
| 1092 | |
---|
| 1093 | checkConcept<GraphItemIt<_Graph, typename _Graph::UEdge>, |
---|
| 1094 | typename _Graph::UEdgeIt >(); |
---|
| 1095 | checkConcept<GraphIncIt<_Graph, typename _Graph::UEdge, |
---|
| 1096 | typename _Graph::Node, 'u'>, typename _Graph::IncEdgeIt>(); |
---|
| 1097 | |
---|
| 1098 | typename _Graph::Node n; |
---|
| 1099 | typename _Graph::IncEdgeIt ueit(INVALID); |
---|
| 1100 | n = graph.baseNode(ueit); |
---|
| 1101 | n = graph.runningNode(ueit); |
---|
| 1102 | } |
---|
| 1103 | |
---|
| 1104 | const _Graph& graph; |
---|
| 1105 | |
---|
| 1106 | }; |
---|
| 1107 | }; |
---|
| 1108 | |
---|
| 1109 | /// \brief An empty alteration notifier graph class. |
---|
| 1110 | /// |
---|
| 1111 | /// This class provides beside the core graph features alteration |
---|
| 1112 | /// notifier interface for the graph structure. This implements |
---|
| 1113 | /// an observer-notifier pattern for each graph item. More |
---|
| 1114 | /// obsevers can be registered into the notifier and whenever an |
---|
| 1115 | /// alteration occured in the graph all the observers will |
---|
| 1116 | /// notified about it. |
---|
| 1117 | template <typename _Base = BaseGraphComponent> |
---|
| 1118 | class AlterableGraphComponent : public _Base { |
---|
| 1119 | public: |
---|
| 1120 | |
---|
| 1121 | typedef _Base Base; |
---|
| 1122 | typedef typename Base::Node Node; |
---|
| 1123 | typedef typename Base::Edge Edge; |
---|
| 1124 | |
---|
| 1125 | |
---|
| 1126 | /// The node observer registry. |
---|
| 1127 | typedef AlterationNotifier<AlterableGraphComponent, Node> |
---|
| 1128 | NodeNotifier; |
---|
| 1129 | /// The edge observer registry. |
---|
| 1130 | typedef AlterationNotifier<AlterableGraphComponent, Edge> |
---|
| 1131 | EdgeNotifier; |
---|
| 1132 | |
---|
| 1133 | /// \brief Gives back the node alteration notifier. |
---|
| 1134 | /// |
---|
| 1135 | /// Gives back the node alteration notifier. |
---|
| 1136 | NodeNotifier& getNotifier(Node) const { |
---|
| 1137 | return NodeNotifier(); |
---|
| 1138 | } |
---|
| 1139 | |
---|
| 1140 | /// \brief Gives back the edge alteration notifier. |
---|
| 1141 | /// |
---|
| 1142 | /// Gives back the edge alteration notifier. |
---|
| 1143 | EdgeNotifier& getNotifier(Edge) const { |
---|
| 1144 | return EdgeNotifier(); |
---|
| 1145 | } |
---|
| 1146 | |
---|
| 1147 | template <typename _Graph> |
---|
| 1148 | struct Constraints { |
---|
| 1149 | void constraints() { |
---|
| 1150 | checkConcept<Base, _Graph>(); |
---|
| 1151 | typename _Graph::NodeNotifier& nn |
---|
| 1152 | = graph.getNotifier(typename _Graph::Node()); |
---|
| 1153 | |
---|
| 1154 | typename _Graph::EdgeNotifier& en |
---|
| 1155 | = graph.getNotifier(typename _Graph::Edge()); |
---|
| 1156 | |
---|
| 1157 | ignore_unused_variable_warning(nn); |
---|
| 1158 | ignore_unused_variable_warning(en); |
---|
| 1159 | } |
---|
| 1160 | |
---|
| 1161 | const _Graph& graph; |
---|
| 1162 | |
---|
| 1163 | }; |
---|
| 1164 | |
---|
| 1165 | }; |
---|
| 1166 | |
---|
| 1167 | /// \brief An empty alteration notifier undirected graph class. |
---|
| 1168 | /// |
---|
| 1169 | /// This class provides beside the core graph features alteration |
---|
| 1170 | /// notifier interface for the graph structure. This implements |
---|
| 1171 | /// an observer-notifier pattern for each graph item. More |
---|
| 1172 | /// obsevers can be registered into the notifier and whenever an |
---|
| 1173 | /// alteration occured in the graph all the observers will |
---|
| 1174 | /// notified about it. |
---|
| 1175 | template <typename _Base = BaseUGraphComponent> |
---|
| 1176 | class AlterableUGraphComponent : public AlterableGraphComponent<_Base> { |
---|
| 1177 | public: |
---|
| 1178 | |
---|
| 1179 | typedef _Base Base; |
---|
| 1180 | typedef typename Base::UEdge UEdge; |
---|
| 1181 | |
---|
| 1182 | |
---|
| 1183 | /// The edge observer registry. |
---|
| 1184 | typedef AlterationNotifier<AlterableUGraphComponent, UEdge> |
---|
| 1185 | UEdgeNotifier; |
---|
| 1186 | |
---|
| 1187 | /// \brief Gives back the edge alteration notifier. |
---|
| 1188 | /// |
---|
| 1189 | /// Gives back the edge alteration notifier. |
---|
| 1190 | UEdgeNotifier& getNotifier(UEdge) const { |
---|
| 1191 | return UEdgeNotifier(); |
---|
| 1192 | } |
---|
| 1193 | |
---|
| 1194 | template <typename _Graph> |
---|
| 1195 | struct Constraints { |
---|
| 1196 | void constraints() { |
---|
| 1197 | checkConcept<Base, _Graph>(); |
---|
| 1198 | checkConcept<AlterableGraphComponent, _Graph>(); |
---|
| 1199 | typename _Graph::UEdgeNotifier& uen |
---|
| 1200 | = graph.getNotifier(typename _Graph::UEdge()); |
---|
| 1201 | ignore_unused_variable_warning(uen); |
---|
| 1202 | } |
---|
| 1203 | |
---|
| 1204 | const _Graph& graph; |
---|
| 1205 | |
---|
| 1206 | }; |
---|
| 1207 | |
---|
| 1208 | }; |
---|
| 1209 | |
---|
| 1210 | |
---|
| 1211 | /// \brief Class describing the concept of graph maps |
---|
| 1212 | /// |
---|
| 1213 | /// This class describes the common interface of the graph maps |
---|
| 1214 | /// (NodeMap, EdgeMap), that is \ref maps-page "maps" which can be used to |
---|
| 1215 | /// associate data to graph descriptors (nodes or edges). |
---|
| 1216 | template <typename _Graph, typename _Item, typename _Value> |
---|
| 1217 | class GraphMap : public ReadWriteMap<_Item, _Value> { |
---|
| 1218 | public: |
---|
| 1219 | |
---|
| 1220 | typedef ReadWriteMap<_Item, _Value> Parent; |
---|
| 1221 | |
---|
| 1222 | /// The graph type of the map. |
---|
| 1223 | typedef _Graph Graph; |
---|
| 1224 | /// The key type of the map. |
---|
| 1225 | typedef _Item Key; |
---|
| 1226 | /// The value type of the map. |
---|
| 1227 | typedef _Value Value; |
---|
| 1228 | |
---|
| 1229 | /// \brief Construct a new map. |
---|
| 1230 | /// |
---|
| 1231 | /// Construct a new map for the graph. |
---|
| 1232 | explicit GraphMap(const Graph&) {} |
---|
| 1233 | /// \brief Construct a new map with default value. |
---|
| 1234 | /// |
---|
| 1235 | /// Construct a new map for the graph and initalise the values. |
---|
| 1236 | GraphMap(const Graph&, const Value&) {} |
---|
| 1237 | /// \brief Copy constructor. |
---|
| 1238 | /// |
---|
| 1239 | /// Copy Constructor. |
---|
| 1240 | GraphMap(const GraphMap&) : Parent() {} |
---|
| 1241 | |
---|
| 1242 | /// \brief Assign operator. |
---|
| 1243 | /// |
---|
| 1244 | /// Assign operator. It does not mofify the underlying graph, |
---|
| 1245 | /// it just iterates on the current item set and set the map |
---|
| 1246 | /// with the value returned by the assigned map. |
---|
| 1247 | template <typename CMap> |
---|
| 1248 | GraphMap& operator=(const CMap&) { |
---|
| 1249 | checkConcept<ReadMap<Key, Value>, CMap>(); |
---|
| 1250 | return *this; |
---|
| 1251 | } |
---|
| 1252 | |
---|
| 1253 | template<typename _Map> |
---|
| 1254 | struct Constraints { |
---|
| 1255 | void constraints() { |
---|
| 1256 | checkConcept<ReadWriteMap<Key, Value>, _Map >(); |
---|
| 1257 | // Construction with a graph parameter |
---|
| 1258 | _Map a(g); |
---|
| 1259 | // Constructor with a graph and a default value parameter |
---|
| 1260 | _Map a2(g,t); |
---|
| 1261 | // Copy constructor. |
---|
| 1262 | _Map b(c); |
---|
| 1263 | |
---|
| 1264 | ReadMap<Key, Value> cmap; |
---|
| 1265 | b = cmap; |
---|
| 1266 | |
---|
| 1267 | ignore_unused_variable_warning(a2); |
---|
| 1268 | ignore_unused_variable_warning(b); |
---|
| 1269 | } |
---|
| 1270 | |
---|
| 1271 | const _Map &c; |
---|
| 1272 | const Graph &g; |
---|
| 1273 | const typename GraphMap::Value &t; |
---|
| 1274 | }; |
---|
| 1275 | |
---|
| 1276 | }; |
---|
| 1277 | |
---|
| 1278 | /// \brief An empty mappable graph class. |
---|
| 1279 | /// |
---|
| 1280 | /// This class provides beside the core graph features |
---|
| 1281 | /// map interface for the graph structure. |
---|
| 1282 | /// This concept is part of the Graph concept. |
---|
| 1283 | template <typename _Base = BaseGraphComponent> |
---|
| 1284 | class MappableGraphComponent : public _Base { |
---|
| 1285 | public: |
---|
| 1286 | |
---|
| 1287 | typedef _Base Base; |
---|
| 1288 | typedef typename Base::Node Node; |
---|
| 1289 | typedef typename Base::Edge Edge; |
---|
| 1290 | |
---|
| 1291 | typedef MappableGraphComponent Graph; |
---|
| 1292 | |
---|
| 1293 | /// \brief ReadWrite map of the nodes. |
---|
| 1294 | /// |
---|
| 1295 | /// ReadWrite map of the nodes. |
---|
| 1296 | /// |
---|
| 1297 | template <typename Value> |
---|
| 1298 | class NodeMap : public GraphMap<Graph, Node, Value> { |
---|
| 1299 | private: |
---|
| 1300 | NodeMap(); |
---|
| 1301 | public: |
---|
| 1302 | typedef GraphMap<Graph, Node, Value> Parent; |
---|
| 1303 | |
---|
| 1304 | /// \brief Construct a new map. |
---|
| 1305 | /// |
---|
| 1306 | /// Construct a new map for the graph. |
---|
| 1307 | /// \todo call the right parent class constructor |
---|
| 1308 | explicit NodeMap(const Graph& graph) : Parent(graph) {} |
---|
| 1309 | |
---|
| 1310 | /// \brief Construct a new map with default value. |
---|
| 1311 | /// |
---|
| 1312 | /// Construct a new map for the graph and initalise the values. |
---|
| 1313 | NodeMap(const Graph& graph, const Value& value) |
---|
| 1314 | : Parent(graph, value) {} |
---|
| 1315 | |
---|
| 1316 | /// \brief Copy constructor. |
---|
| 1317 | /// |
---|
| 1318 | /// Copy Constructor. |
---|
| 1319 | NodeMap(const NodeMap& nm) : Parent(nm) {} |
---|
| 1320 | |
---|
| 1321 | /// \brief Assign operator. |
---|
| 1322 | /// |
---|
| 1323 | /// Assign operator. |
---|
| 1324 | template <typename CMap> |
---|
| 1325 | NodeMap& operator=(const CMap&) { |
---|
| 1326 | checkConcept<ReadMap<Node, Value>, CMap>(); |
---|
| 1327 | return *this; |
---|
| 1328 | } |
---|
| 1329 | |
---|
| 1330 | }; |
---|
| 1331 | |
---|
| 1332 | /// \brief ReadWrite map of the edges. |
---|
| 1333 | /// |
---|
| 1334 | /// ReadWrite map of the edges. |
---|
| 1335 | /// |
---|
| 1336 | template <typename Value> |
---|
| 1337 | class EdgeMap : public GraphMap<Graph, Edge, Value> { |
---|
| 1338 | private: |
---|
| 1339 | EdgeMap(); |
---|
| 1340 | public: |
---|
| 1341 | typedef GraphMap<Graph, Edge, Value> Parent; |
---|
| 1342 | |
---|
| 1343 | /// \brief Construct a new map. |
---|
| 1344 | /// |
---|
| 1345 | /// Construct a new map for the graph. |
---|
| 1346 | /// \todo call the right parent class constructor |
---|
| 1347 | explicit EdgeMap(const Graph& graph) : Parent(graph) {} |
---|
| 1348 | |
---|
| 1349 | /// \brief Construct a new map with default value. |
---|
| 1350 | /// |
---|
| 1351 | /// Construct a new map for the graph and initalise the values. |
---|
| 1352 | EdgeMap(const Graph& graph, const Value& value) |
---|
| 1353 | : Parent(graph, value) {} |
---|
| 1354 | |
---|
| 1355 | /// \brief Copy constructor. |
---|
| 1356 | /// |
---|
| 1357 | /// Copy Constructor. |
---|
| 1358 | EdgeMap(const EdgeMap& nm) : Parent(nm) {} |
---|
| 1359 | |
---|
| 1360 | /// \brief Assign operator. |
---|
| 1361 | /// |
---|
| 1362 | /// Assign operator. |
---|
| 1363 | template <typename CMap> |
---|
| 1364 | EdgeMap& operator=(const CMap&) { |
---|
| 1365 | checkConcept<ReadMap<Edge, Value>, CMap>(); |
---|
| 1366 | return *this; |
---|
| 1367 | } |
---|
| 1368 | |
---|
| 1369 | }; |
---|
| 1370 | |
---|
| 1371 | |
---|
| 1372 | template <typename _Graph> |
---|
| 1373 | struct Constraints { |
---|
| 1374 | |
---|
| 1375 | struct Dummy { |
---|
| 1376 | int value; |
---|
| 1377 | Dummy() : value(0) {} |
---|
| 1378 | Dummy(int _v) : value(_v) {} |
---|
| 1379 | }; |
---|
| 1380 | |
---|
| 1381 | void constraints() { |
---|
| 1382 | checkConcept<Base, _Graph>(); |
---|
| 1383 | { // int map test |
---|
| 1384 | typedef typename _Graph::template NodeMap<int> IntNodeMap; |
---|
| 1385 | checkConcept<GraphMap<_Graph, typename _Graph::Node, int>, |
---|
| 1386 | IntNodeMap >(); |
---|
| 1387 | } { // bool map test |
---|
| 1388 | typedef typename _Graph::template NodeMap<bool> BoolNodeMap; |
---|
| 1389 | checkConcept<GraphMap<_Graph, typename _Graph::Node, bool>, |
---|
| 1390 | BoolNodeMap >(); |
---|
| 1391 | } { // Dummy map test |
---|
| 1392 | typedef typename _Graph::template NodeMap<Dummy> DummyNodeMap; |
---|
| 1393 | checkConcept<GraphMap<_Graph, typename _Graph::Node, Dummy>, |
---|
| 1394 | DummyNodeMap >(); |
---|
| 1395 | } |
---|
| 1396 | |
---|
| 1397 | { // int map test |
---|
| 1398 | typedef typename _Graph::template EdgeMap<int> IntEdgeMap; |
---|
| 1399 | checkConcept<GraphMap<_Graph, typename _Graph::Edge, int>, |
---|
| 1400 | IntEdgeMap >(); |
---|
| 1401 | } { // bool map test |
---|
| 1402 | typedef typename _Graph::template EdgeMap<bool> BoolEdgeMap; |
---|
| 1403 | checkConcept<GraphMap<_Graph, typename _Graph::Edge, bool>, |
---|
| 1404 | BoolEdgeMap >(); |
---|
| 1405 | } { // Dummy map test |
---|
| 1406 | typedef typename _Graph::template EdgeMap<Dummy> DummyEdgeMap; |
---|
| 1407 | checkConcept<GraphMap<_Graph, typename _Graph::Edge, Dummy>, |
---|
| 1408 | DummyEdgeMap >(); |
---|
| 1409 | } |
---|
| 1410 | } |
---|
| 1411 | |
---|
| 1412 | _Graph& graph; |
---|
| 1413 | }; |
---|
| 1414 | }; |
---|
| 1415 | |
---|
| 1416 | /// \brief An empty mappable base graph class. |
---|
| 1417 | /// |
---|
| 1418 | /// This class provides beside the core graph features |
---|
| 1419 | /// map interface for the graph structure. |
---|
| 1420 | /// This concept is part of the UGraph concept. |
---|
| 1421 | template <typename _Base = BaseUGraphComponent> |
---|
| 1422 | class MappableUGraphComponent : public MappableGraphComponent<_Base> { |
---|
| 1423 | public: |
---|
| 1424 | |
---|
| 1425 | typedef _Base Base; |
---|
| 1426 | typedef typename Base::UEdge UEdge; |
---|
| 1427 | |
---|
| 1428 | typedef MappableUGraphComponent Graph; |
---|
| 1429 | |
---|
| 1430 | /// \brief ReadWrite map of the uedges. |
---|
| 1431 | /// |
---|
| 1432 | /// ReadWrite map of the uedges. |
---|
| 1433 | /// |
---|
| 1434 | template <typename Value> |
---|
| 1435 | class UEdgeMap : public GraphMap<Graph, UEdge, Value> { |
---|
| 1436 | public: |
---|
| 1437 | typedef GraphMap<Graph, UEdge, Value> Parent; |
---|
| 1438 | |
---|
| 1439 | /// \brief Construct a new map. |
---|
| 1440 | /// |
---|
| 1441 | /// Construct a new map for the graph. |
---|
| 1442 | /// \todo call the right parent class constructor |
---|
| 1443 | explicit UEdgeMap(const Graph& graph) : Parent(graph) {} |
---|
| 1444 | |
---|
| 1445 | /// \brief Construct a new map with default value. |
---|
| 1446 | /// |
---|
| 1447 | /// Construct a new map for the graph and initalise the values. |
---|
| 1448 | UEdgeMap(const Graph& graph, const Value& value) |
---|
| 1449 | : Parent(graph, value) {} |
---|
| 1450 | |
---|
| 1451 | /// \brief Copy constructor. |
---|
| 1452 | /// |
---|
| 1453 | /// Copy Constructor. |
---|
| 1454 | UEdgeMap(const UEdgeMap& nm) : Parent(nm) {} |
---|
| 1455 | |
---|
| 1456 | /// \brief Assign operator. |
---|
| 1457 | /// |
---|
| 1458 | /// Assign operator. |
---|
| 1459 | template <typename CMap> |
---|
| 1460 | UEdgeMap& operator=(const CMap&) { |
---|
| 1461 | checkConcept<ReadMap<UEdge, Value>, CMap>(); |
---|
| 1462 | return *this; |
---|
| 1463 | } |
---|
| 1464 | |
---|
| 1465 | }; |
---|
| 1466 | |
---|
| 1467 | |
---|
| 1468 | template <typename _Graph> |
---|
| 1469 | struct Constraints { |
---|
| 1470 | |
---|
| 1471 | struct Dummy { |
---|
| 1472 | int value; |
---|
| 1473 | Dummy() : value(0) {} |
---|
| 1474 | Dummy(int _v) : value(_v) {} |
---|
| 1475 | }; |
---|
| 1476 | |
---|
| 1477 | void constraints() { |
---|
| 1478 | checkConcept<Base, _Graph>(); |
---|
| 1479 | checkConcept<MappableGraphComponent<Base>, _Graph>(); |
---|
| 1480 | |
---|
| 1481 | { // int map test |
---|
| 1482 | typedef typename _Graph::template UEdgeMap<int> IntUEdgeMap; |
---|
| 1483 | checkConcept<GraphMap<_Graph, typename _Graph::UEdge, int>, |
---|
| 1484 | IntUEdgeMap >(); |
---|
| 1485 | } { // bool map test |
---|
| 1486 | typedef typename _Graph::template UEdgeMap<bool> BoolUEdgeMap; |
---|
| 1487 | checkConcept<GraphMap<_Graph, typename _Graph::UEdge, bool>, |
---|
| 1488 | BoolUEdgeMap >(); |
---|
| 1489 | } { // Dummy map test |
---|
| 1490 | typedef typename _Graph::template UEdgeMap<Dummy> DummyUEdgeMap; |
---|
| 1491 | checkConcept<GraphMap<_Graph, typename _Graph::UEdge, Dummy>, |
---|
| 1492 | DummyUEdgeMap >(); |
---|
| 1493 | } |
---|
| 1494 | } |
---|
| 1495 | |
---|
| 1496 | _Graph& graph; |
---|
| 1497 | }; |
---|
| 1498 | }; |
---|
| 1499 | |
---|
| 1500 | |
---|
| 1501 | /// \brief An empty extendable graph class. |
---|
| 1502 | /// |
---|
| 1503 | /// This class provides beside the core graph features graph |
---|
| 1504 | /// extendable interface for the graph structure. The main |
---|
| 1505 | /// difference between the base and this interface is that the |
---|
| 1506 | /// graph alterations should handled already on this level. |
---|
| 1507 | template <typename _Base = BaseGraphComponent> |
---|
| 1508 | class ExtendableGraphComponent : public _Base { |
---|
| 1509 | public: |
---|
| 1510 | |
---|
| 1511 | typedef typename _Base::Node Node; |
---|
| 1512 | typedef typename _Base::Edge Edge; |
---|
| 1513 | |
---|
| 1514 | /// \brief Adds a new node to the graph. |
---|
| 1515 | /// |
---|
| 1516 | /// Adds a new node to the graph. |
---|
| 1517 | /// |
---|
| 1518 | Node addNode() { |
---|
| 1519 | return INVALID; |
---|
| 1520 | } |
---|
| 1521 | |
---|
| 1522 | /// \brief Adds a new edge connects the given two nodes. |
---|
| 1523 | /// |
---|
| 1524 | /// Adds a new edge connects the the given two nodes. |
---|
| 1525 | Edge addEdge(const Node&, const Node&) { |
---|
| 1526 | return INVALID; |
---|
| 1527 | } |
---|
| 1528 | |
---|
| 1529 | template <typename _Graph> |
---|
| 1530 | struct Constraints { |
---|
| 1531 | void constraints() { |
---|
| 1532 | typename _Graph::Node node_a, node_b; |
---|
| 1533 | node_a = graph.addNode(); |
---|
| 1534 | node_b = graph.addNode(); |
---|
| 1535 | typename _Graph::Edge edge; |
---|
| 1536 | edge = graph.addEdge(node_a, node_b); |
---|
| 1537 | } |
---|
| 1538 | |
---|
| 1539 | _Graph& graph; |
---|
| 1540 | }; |
---|
| 1541 | }; |
---|
| 1542 | |
---|
| 1543 | /// \brief An empty extendable base undirected graph class. |
---|
| 1544 | /// |
---|
| 1545 | /// This class provides beside the core undirected graph features |
---|
| 1546 | /// core undircted graph extend interface for the graph structure. |
---|
| 1547 | /// The main difference between the base and this interface is |
---|
| 1548 | /// that the graph alterations should handled already on this |
---|
| 1549 | /// level. |
---|
| 1550 | template <typename _Base = BaseUGraphComponent> |
---|
| 1551 | class ExtendableUGraphComponent : public _Base { |
---|
| 1552 | public: |
---|
| 1553 | |
---|
| 1554 | typedef typename _Base::Node Node; |
---|
| 1555 | typedef typename _Base::UEdge UEdge; |
---|
| 1556 | |
---|
| 1557 | /// \brief Adds a new node to the graph. |
---|
| 1558 | /// |
---|
| 1559 | /// Adds a new node to the graph. |
---|
| 1560 | /// |
---|
| 1561 | Node addNode() { |
---|
| 1562 | return INVALID; |
---|
| 1563 | } |
---|
| 1564 | |
---|
| 1565 | /// \brief Adds a new edge connects the given two nodes. |
---|
| 1566 | /// |
---|
| 1567 | /// Adds a new edge connects the the given two nodes. |
---|
| 1568 | UEdge addEdge(const Node&, const Node&) { |
---|
| 1569 | return INVALID; |
---|
| 1570 | } |
---|
| 1571 | |
---|
| 1572 | template <typename _Graph> |
---|
| 1573 | struct Constraints { |
---|
| 1574 | void constraints() { |
---|
| 1575 | typename _Graph::Node node_a, node_b; |
---|
| 1576 | node_a = graph.addNode(); |
---|
| 1577 | node_b = graph.addNode(); |
---|
| 1578 | typename _Graph::UEdge uedge; |
---|
| 1579 | uedge = graph.addUEdge(node_a, node_b); |
---|
| 1580 | } |
---|
| 1581 | |
---|
| 1582 | _Graph& graph; |
---|
| 1583 | }; |
---|
| 1584 | }; |
---|
| 1585 | |
---|
| 1586 | /// \brief An empty erasable graph class. |
---|
| 1587 | /// |
---|
| 1588 | /// This class provides beside the core graph features core erase |
---|
| 1589 | /// functions for the graph structure. The main difference between |
---|
| 1590 | /// the base and this interface is that the graph alterations |
---|
| 1591 | /// should handled already on this level. |
---|
| 1592 | template <typename _Base = BaseGraphComponent> |
---|
| 1593 | class ErasableGraphComponent : public _Base { |
---|
| 1594 | public: |
---|
| 1595 | |
---|
| 1596 | typedef _Base Base; |
---|
| 1597 | typedef typename Base::Node Node; |
---|
| 1598 | typedef typename Base::Edge Edge; |
---|
| 1599 | |
---|
| 1600 | /// \brief Erase a node from the graph. |
---|
| 1601 | /// |
---|
| 1602 | /// Erase a node from the graph. This function should |
---|
| 1603 | /// erase all edges connecting to the node. |
---|
| 1604 | void erase(const Node&) {} |
---|
| 1605 | |
---|
| 1606 | /// \brief Erase an edge from the graph. |
---|
| 1607 | /// |
---|
| 1608 | /// Erase an edge from the graph. |
---|
| 1609 | /// |
---|
| 1610 | void erase(const Edge&) {} |
---|
| 1611 | |
---|
| 1612 | template <typename _Graph> |
---|
| 1613 | struct Constraints { |
---|
| 1614 | void constraints() { |
---|
| 1615 | typename _Graph::Node node; |
---|
| 1616 | graph.erase(node); |
---|
| 1617 | typename _Graph::Edge edge; |
---|
| 1618 | graph.erase(edge); |
---|
| 1619 | } |
---|
| 1620 | |
---|
| 1621 | _Graph& graph; |
---|
| 1622 | }; |
---|
| 1623 | }; |
---|
| 1624 | |
---|
| 1625 | /// \brief An empty erasable base undirected graph class. |
---|
| 1626 | /// |
---|
| 1627 | /// This class provides beside the core undirected graph features |
---|
| 1628 | /// core erase functions for the undirceted graph structure. The |
---|
| 1629 | /// main difference between the base and this interface is that |
---|
| 1630 | /// the graph alterations should handled already on this level. |
---|
| 1631 | template <typename _Base = BaseUGraphComponent> |
---|
| 1632 | class ErasableUGraphComponent : public _Base { |
---|
| 1633 | public: |
---|
| 1634 | |
---|
| 1635 | typedef _Base Base; |
---|
| 1636 | typedef typename Base::Node Node; |
---|
| 1637 | typedef typename Base::UEdge UEdge; |
---|
| 1638 | |
---|
| 1639 | /// \brief Erase a node from the graph. |
---|
| 1640 | /// |
---|
| 1641 | /// Erase a node from the graph. This function should erase |
---|
| 1642 | /// edges connecting to the node. |
---|
| 1643 | void erase(const Node&) {} |
---|
| 1644 | |
---|
| 1645 | /// \brief Erase an edge from the graph. |
---|
| 1646 | /// |
---|
| 1647 | /// Erase an edge from the graph. |
---|
| 1648 | /// |
---|
| 1649 | void erase(const UEdge&) {} |
---|
| 1650 | |
---|
| 1651 | template <typename _Graph> |
---|
| 1652 | struct Constraints { |
---|
| 1653 | void constraints() { |
---|
| 1654 | typename _Graph::Node node; |
---|
| 1655 | graph.erase(node); |
---|
| 1656 | typename _Graph::Edge edge; |
---|
| 1657 | graph.erase(edge); |
---|
| 1658 | } |
---|
| 1659 | |
---|
| 1660 | _Graph& graph; |
---|
| 1661 | }; |
---|
| 1662 | }; |
---|
| 1663 | |
---|
| 1664 | /// \brief An empty clearable base graph class. |
---|
| 1665 | /// |
---|
| 1666 | /// This class provides beside the core graph features core clear |
---|
| 1667 | /// functions for the graph structure. The main difference between |
---|
| 1668 | /// the base and this interface is that the graph alterations |
---|
| 1669 | /// should handled already on this level. |
---|
| 1670 | template <typename _Base = BaseGraphComponent> |
---|
| 1671 | class ClearableGraphComponent : public _Base { |
---|
| 1672 | public: |
---|
| 1673 | |
---|
| 1674 | /// \brief Erase all nodes and edges from the graph. |
---|
| 1675 | /// |
---|
| 1676 | /// Erase all nodes and edges from the graph. |
---|
| 1677 | /// |
---|
| 1678 | void clear() {} |
---|
| 1679 | |
---|
| 1680 | template <typename _Graph> |
---|
| 1681 | struct Constraints { |
---|
| 1682 | void constraints() { |
---|
| 1683 | graph.clear(); |
---|
| 1684 | } |
---|
| 1685 | |
---|
| 1686 | _Graph graph; |
---|
| 1687 | }; |
---|
| 1688 | }; |
---|
| 1689 | |
---|
| 1690 | /// \brief An empty clearable base undirected graph class. |
---|
| 1691 | /// |
---|
| 1692 | /// This class provides beside the core undirected graph features |
---|
| 1693 | /// core clear functions for the undirected graph structure. The |
---|
| 1694 | /// main difference between the base and this interface is that |
---|
| 1695 | /// the graph alterations should handled already on this level. |
---|
| 1696 | template <typename _Base = BaseUGraphComponent> |
---|
| 1697 | class ClearableUGraphComponent : public _Base { |
---|
| 1698 | public: |
---|
| 1699 | |
---|
| 1700 | /// \brief Erase all nodes and undirected edges from the graph. |
---|
| 1701 | /// |
---|
| 1702 | /// Erase all nodes and undirected edges from the graph. |
---|
| 1703 | /// |
---|
| 1704 | void clear() {} |
---|
| 1705 | |
---|
| 1706 | template <typename _Graph> |
---|
| 1707 | struct Constraints { |
---|
| 1708 | void constraints() { |
---|
| 1709 | graph.clear(); |
---|
| 1710 | } |
---|
| 1711 | |
---|
| 1712 | _Graph graph; |
---|
| 1713 | }; |
---|
| 1714 | }; |
---|
| 1715 | |
---|
| 1716 | } |
---|
| 1717 | |
---|
| 1718 | } |
---|
| 1719 | |
---|
| 1720 | #endif |
---|