[959] | 1 | /* -*- C++ -*- |
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| 2 | * src/lemon/concept/graph_component.h - Part of LEMON, a generic C++ optimization library |
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| 3 | * |
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| 4 | * Copyright (C) 2004 Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
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| 5 | * (Egervary Combinatorial Optimization Research Group, EGRES). |
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| 6 | * |
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| 7 | * Permission to use, modify and distribute this software is granted |
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| 8 | * provided that this copyright notice appears in all copies. For |
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| 9 | * precise terms see the accompanying LICENSE file. |
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| 10 | * |
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| 11 | * This software is provided "AS IS" with no warranty of any kind, |
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| 12 | * express or implied, and with no claim as to its suitability for any |
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| 13 | * purpose. |
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| 14 | * |
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| 15 | */ |
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| 16 | |
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| 17 | ///\ingroup concept |
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| 18 | ///\file |
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| 19 | ///\brief The graph components. |
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| 20 | |
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| 21 | |
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| 22 | #ifndef LEMON_CONCEPT_GRAPH_COMPONENT_H |
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| 23 | #define LEMON_CONCEPT_GRAPH_COMPONENT_H |
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| 24 | |
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| 25 | #include <lemon/invalid.h> |
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| 26 | #include <lemon/concept/maps.h> |
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| 27 | |
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| 28 | namespace lemon { |
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| 29 | namespace concept { |
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| 30 | |
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[961] | 31 | |
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| 32 | /**************** Graph iterator concepts ****************/ |
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| 33 | |
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| 34 | /// Skeleton class for graph Node and Edge |
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| 35 | |
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| 36 | /// \note Because Node and Edge are forbidden to inherit from the same |
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[964] | 37 | /// base class, this is a template. For Node you should instantiate it |
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[961] | 38 | /// with character 'n' and for Edge with 'e'. |
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| 39 | |
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[989] | 40 | template<char _selector> |
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[961] | 41 | class GraphItem { |
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| 42 | public: |
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[989] | 43 | /// Default constructor. |
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| 44 | |
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| 45 | /// @warning The default constructor sets the item |
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| 46 | /// to an undefined value. |
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[961] | 47 | GraphItem() {} |
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[989] | 48 | /// Copy constructor. |
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| 49 | |
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| 50 | /// Copy constructor. |
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| 51 | /// |
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| 52 | GraphItem(GraphItem const&) {} |
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| 53 | /// Invalid constructor \& conversion. |
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| 54 | |
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| 55 | /// This constructor initializes the item to be invalid. |
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| 56 | /// \sa Invalid for more details. |
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[961] | 57 | GraphItem(Invalid) {} |
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[989] | 58 | /// Assign operator for nodes. |
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[961] | 59 | |
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[989] | 60 | /// The nodes are assignable. |
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| 61 | /// |
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[961] | 62 | GraphItem& operator=(GraphItem const&) { return *this; } |
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[989] | 63 | /// Equality operator. |
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| 64 | |
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| 65 | /// Two iterators are equal if and only if they represents the |
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| 66 | /// same node in the graph or both are invalid. |
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[961] | 67 | bool operator==(GraphItem) const { return false; } |
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[989] | 68 | /// Inequality operator. |
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| 69 | |
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| 70 | /// \sa operator==(const Node& n) |
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| 71 | /// |
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[961] | 72 | bool operator!=(GraphItem) const { return false; } |
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| 73 | |
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| 74 | // Technical requirement. Do we really need this? |
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[989] | 75 | // bool operator<(GraphItem) const { return false; } |
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| 76 | |
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| 77 | |
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| 78 | template<typename _GraphItem> |
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| 79 | struct Constraints { |
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| 80 | void constraints() { |
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| 81 | _GraphItem i1; |
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| 82 | _GraphItem i2 = i1; |
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| 83 | _GraphItem i3 = INVALID; |
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| 84 | |
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| 85 | i1 = i2 = i3; |
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| 86 | |
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| 87 | bool b; |
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| 88 | // b = (ia == ib) && (ia != ib) && (ia < ib); |
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| 89 | b = (ia == ib) && (ia != ib); |
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| 90 | b = (ia == INVALID) && (ib != INVALID); |
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| 91 | } |
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| 92 | |
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| 93 | const _GraphItem &ia; |
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| 94 | const _GraphItem &ib; |
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| 95 | }; |
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[961] | 96 | }; |
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| 97 | |
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[959] | 98 | /// An empty base graph class. |
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| 99 | |
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[961] | 100 | /// This class provides the minimal set of features needed for a graph |
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| 101 | /// structure. All graph concepts have to be conform to this base |
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| 102 | /// graph. |
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| 103 | /// |
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| 104 | /// \bug This is not true. The minimal graph concept is the |
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| 105 | /// BaseIterableGraphComponent. |
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[959] | 106 | |
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| 107 | class BaseGraphComponent { |
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| 108 | public: |
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| 109 | |
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| 110 | typedef BaseGraphComponent Graph; |
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| 111 | |
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| 112 | /// Node class of the graph. |
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| 113 | |
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| 114 | /// This class represents the Nodes of the graph. |
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| 115 | /// |
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[989] | 116 | typedef GraphItem<'n'> Node; |
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[959] | 117 | |
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| 118 | /// Edge class of the graph. |
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| 119 | |
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| 120 | /// This class represents the Edges of the graph. |
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| 121 | /// |
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[989] | 122 | typedef GraphItem<'e'> Edge; |
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[959] | 123 | |
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[986] | 124 | ///Gives back the target node of an edge. |
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[959] | 125 | |
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[986] | 126 | ///Gives back the target node of an edge. |
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[959] | 127 | /// |
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[986] | 128 | Node target(const Edge&) const { return INVALID;} |
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[959] | 129 | |
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[986] | 130 | ///Gives back the source node of an edge. |
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[959] | 131 | |
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[986] | 132 | ///Gives back the source node of an edge. |
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[959] | 133 | /// |
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[986] | 134 | Node source(const Edge&) const { return INVALID;} |
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[959] | 135 | |
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[961] | 136 | |
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[989] | 137 | template <typename _Graph> |
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| 138 | struct Constraints { |
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| 139 | typedef typename _Graph::Node Node; |
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| 140 | typedef typename _Graph::Edge Edge; |
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[959] | 141 | |
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[989] | 142 | void constraints() { |
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| 143 | checkConcept<GraphItem<'n'>, Node>(); |
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| 144 | checkConcept<GraphItem<'e'>, Edge>(); |
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| 145 | { |
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| 146 | Node n; |
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| 147 | Edge e; |
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| 148 | n = graph.source(e); |
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| 149 | n = graph.target(e); |
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| 150 | } |
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| 151 | } |
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[959] | 152 | |
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[989] | 153 | const _Graph& graph; |
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| 154 | }; |
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[959] | 155 | }; |
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| 156 | |
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| 157 | /// An empty iterable base graph class. |
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| 158 | |
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| 159 | /// This class provides beside the core graph features |
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| 160 | /// core iterable interface for the graph structure. |
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| 161 | /// Most of the base graphs should be conform to this concept. |
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| 162 | |
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| 163 | class BaseIterableGraphComponent : virtual public BaseGraphComponent { |
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| 164 | public: |
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| 165 | |
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| 166 | typedef BaseGraphComponent::Node Node; |
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| 167 | typedef BaseGraphComponent::Edge Edge; |
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| 168 | |
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| 169 | /// Gives back the first Node in the iterating order. |
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| 170 | |
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| 171 | /// Gives back the first Node in the iterating order. |
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| 172 | /// |
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| 173 | void first(Node&) const {} |
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| 174 | |
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| 175 | /// Gives back the next Node in the iterating order. |
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| 176 | |
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| 177 | /// Gives back the next Node in the iterating order. |
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| 178 | /// |
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| 179 | void next(Node&) const {} |
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| 180 | |
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| 181 | /// Gives back the first Edge in the iterating order. |
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| 182 | |
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| 183 | /// Gives back the first Edge in the iterating order. |
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| 184 | /// |
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| 185 | void first(Edge&) const {} |
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| 186 | /// Gives back the next Edge in the iterating order. |
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| 187 | |
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| 188 | /// Gives back the next Edge in the iterating order. |
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| 189 | /// |
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| 190 | void next(Edge&) const {} |
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| 191 | |
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| 192 | |
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| 193 | /// Gives back the first of the Edges point to the given Node. |
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| 194 | |
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| 195 | /// Gives back the first of the Edges point to the given Node. |
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| 196 | /// |
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| 197 | void firstIn(Edge&, const Node&) const {} |
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| 198 | |
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| 199 | /// Gives back the next of the Edges points to the given Node. |
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| 200 | |
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| 201 | |
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| 202 | /// Gives back the next of the Edges points to the given Node. |
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| 203 | /// |
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| 204 | void nextIn(Edge&) const {} |
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| 205 | |
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| 206 | /// Gives back the first of the Edges start from the given Node. |
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| 207 | |
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| 208 | /// Gives back the first of the Edges start from the given Node. |
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| 209 | /// |
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| 210 | void firstOut(Edge&, const Node&) const {} |
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| 211 | |
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| 212 | /// Gives back the next of the Edges start from the given Node. |
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| 213 | |
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| 214 | /// Gives back the next of the Edges start from the given Node. |
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| 215 | /// |
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| 216 | void nextOut(Edge&) const {} |
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| 217 | |
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| 218 | |
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[989] | 219 | template <typename _Graph> |
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| 220 | struct Constraints { |
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| 221 | |
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| 222 | void constraints() { |
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| 223 | checkConcept< BaseGraphComponent, _Graph >(); |
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| 224 | typename _Graph::Node node; |
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| 225 | typename _Graph::Edge edge; |
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| 226 | { |
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| 227 | graph.first(node); |
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| 228 | graph.next(node); |
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| 229 | } |
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| 230 | { |
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| 231 | graph.first(edge); |
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| 232 | graph.next(edge); |
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| 233 | } |
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| 234 | { |
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| 235 | graph.firstIn(edge, node); |
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| 236 | graph.nextIn(edge); |
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| 237 | } |
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| 238 | { |
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| 239 | graph.firstOut(edge, node); |
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| 240 | graph.nextOut(edge); |
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| 241 | } |
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| 242 | } |
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[959] | 243 | |
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[989] | 244 | const _Graph& graph; |
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| 245 | }; |
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[959] | 246 | }; |
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| 247 | |
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| 248 | /// An empty idable base graph class. |
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| 249 | |
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| 250 | /// This class provides beside the core graph features |
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| 251 | /// core id functions for the graph structure. |
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| 252 | /// The most of the base graphs should be conform to this concept. |
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| 253 | /// The id's are unique and immutable. |
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| 254 | class IDableGraphComponent : virtual public BaseGraphComponent { |
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| 255 | public: |
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| 256 | |
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| 257 | typedef BaseGraphComponent::Node Node; |
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| 258 | typedef BaseGraphComponent::Edge Edge; |
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| 259 | |
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| 260 | /// Gives back an unique integer id for the Node. |
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| 261 | |
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| 262 | /// Gives back an unique integer id for the Node. |
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| 263 | /// |
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| 264 | int id(const Node&) const { return -1;} |
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| 265 | |
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| 266 | /// Gives back an unique integer id for the Edge. |
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| 267 | |
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| 268 | /// Gives back an unique integer id for the Edge. |
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| 269 | /// |
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| 270 | int id(const Edge&) const { return -1;} |
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| 271 | |
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[989] | 272 | template <typename _Graph> |
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| 273 | struct Constraints { |
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[959] | 274 | |
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[989] | 275 | void constraints() { |
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| 276 | checkConcept< BaseGraphComponent, _Graph >(); |
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| 277 | typename _Graph::Node node; |
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| 278 | int nid = graph.id(node); |
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| 279 | nid = graph.id(node); |
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| 280 | typename _Graph::Edge edge; |
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| 281 | int eid = graph.id(edge); |
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| 282 | eid = graph.id(edge); |
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| 283 | } |
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[959] | 284 | |
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[989] | 285 | const _Graph& graph; |
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| 286 | }; |
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[959] | 287 | }; |
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| 288 | |
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| 289 | |
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| 290 | /// An empty max-idable base graph class. |
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| 291 | |
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| 292 | /// This class provides beside the core graph features |
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| 293 | /// core max id functions for the graph structure. |
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| 294 | /// The most of the base graphs should be conform to this concept. |
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| 295 | /// The id's are unique and immutable. |
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| 296 | class MaxIDableGraphComponent : virtual public BaseGraphComponent { |
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| 297 | public: |
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| 298 | |
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| 299 | /// Gives back an integer greater or equal to the maximum Node id. |
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| 300 | |
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| 301 | /// Gives back an integer greater or equal to the maximum Node id. |
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| 302 | /// |
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[980] | 303 | int maxId(Node = INVALID) const { return -1;} |
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[959] | 304 | |
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| 305 | /// Gives back an integer greater or equal to the maximum Edge id. |
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| 306 | |
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| 307 | /// Gives back an integer greater or equal to the maximum Edge id. |
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| 308 | /// |
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[980] | 309 | int maxId(Edge = INVALID) const { return -1;} |
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[959] | 310 | |
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[989] | 311 | template <typename _Graph> |
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| 312 | struct Constraints { |
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[959] | 313 | |
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[989] | 314 | void constraints() { |
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| 315 | checkConcept<BaseGraphComponent, _Graph>(); |
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| 316 | int nid = graph.maxId(typename _Graph::Node()); |
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| 317 | ignore_unused_variable_warning(nid); |
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| 318 | int eid = graph.maxId(typename _Graph::Edge()); |
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| 319 | ignore_unused_variable_warning(eid); |
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| 320 | } |
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| 321 | |
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| 322 | const _Graph& graph; |
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| 323 | }; |
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[959] | 324 | }; |
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| 325 | |
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| 326 | /// An empty extendable base graph class. |
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| 327 | |
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| 328 | /// This class provides beside the core graph features |
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| 329 | /// core graph extend interface for the graph structure. |
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| 330 | /// The most of the base graphs should be conform to this concept. |
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| 331 | class BaseExtendableGraphComponent : virtual public BaseGraphComponent { |
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| 332 | public: |
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| 333 | |
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| 334 | typedef BaseGraphComponent::Node Node; |
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| 335 | typedef BaseGraphComponent::Edge Edge; |
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| 336 | |
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| 337 | /// Adds a new Node to the graph. |
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| 338 | |
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| 339 | /// Adds a new Node to the graph. |
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| 340 | /// |
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| 341 | Node addNode() { |
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| 342 | return INVALID; |
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| 343 | } |
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| 344 | |
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| 345 | /// Adds a new Edge connects the two Nodes to the graph. |
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| 346 | |
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| 347 | /// Adds a new Edge connects the two Nodes to the graph. |
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| 348 | /// |
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| 349 | Edge addEdge(const Node& from, const Node& to) { |
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| 350 | return INVALID; |
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| 351 | } |
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| 352 | |
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[989] | 353 | template <typename _Graph> |
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| 354 | struct Constraints { |
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| 355 | void constraints() { |
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| 356 | checkConcept<BaseGraphComponent, _Graph >(); |
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| 357 | typename _Graph::Node node_a, node_b; |
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| 358 | node_a = graph.addNode(); |
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| 359 | typename _Graph::Edge edge; |
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| 360 | edge = graph.addEdge(node_a, node_b); |
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| 361 | } |
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[959] | 362 | |
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[989] | 363 | _Graph& graph; |
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| 364 | }; |
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[959] | 365 | }; |
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| 366 | |
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| 367 | /// An empty erasable base graph class. |
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| 368 | |
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| 369 | /// This class provides beside the core graph features |
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| 370 | /// core erase functions for the graph structure. |
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| 371 | /// The most of the base graphs should be conform to this concept. |
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| 372 | class BaseErasableGraphComponent : virtual public BaseGraphComponent { |
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| 373 | public: |
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| 374 | |
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| 375 | typedef BaseGraphComponent::Node Node; |
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| 376 | typedef BaseGraphComponent::Edge Edge; |
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| 377 | |
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| 378 | /// Erase a Node from the graph. |
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| 379 | |
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| 380 | /// Erase a Node from the graph. This function should not |
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| 381 | /// erase edges connecting to the Node. |
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| 382 | void erase(const Node&) {} |
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| 383 | |
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| 384 | /// Erase an Edge from the graph. |
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| 385 | |
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| 386 | /// Erase an Edge from the graph. |
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| 387 | /// |
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| 388 | void erase(const Edge&) {} |
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| 389 | |
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[989] | 390 | template <typename _Graph> |
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| 391 | struct Constraints { |
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| 392 | void constraints() { |
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| 393 | checkConcept<BaseGraphComponent, _Graph>(); |
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| 394 | typename _Graph::Node node; |
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| 395 | graph.erase(node); |
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| 396 | typename _Graph::Edge edge; |
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| 397 | graph.erase(edge); |
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| 398 | } |
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[959] | 399 | |
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[989] | 400 | _Graph& graph; |
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| 401 | }; |
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[959] | 402 | }; |
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| 403 | |
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| 404 | /// An empty clearable base graph class. |
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| 405 | |
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| 406 | /// This class provides beside the core graph features |
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| 407 | /// core clear functions for the graph structure. |
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| 408 | /// The most of the base graphs should be conform to this concept. |
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[1022] | 409 | class ClearableGraphComponent : virtual public BaseGraphComponent { |
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[959] | 410 | public: |
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| 411 | |
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| 412 | /// Erase all the Nodes and Edges from the graph. |
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| 413 | |
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| 414 | /// Erase all the Nodes and Edges from the graph. |
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| 415 | /// |
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| 416 | void clear() {} |
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[989] | 417 | |
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| 418 | template <typename _Graph> |
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| 419 | struct Constraints { |
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| 420 | void constraints() { |
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[1022] | 421 | checkConcept<BaseGraphComponent, _Graph>(); |
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[989] | 422 | graph.clear(); |
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| 423 | } |
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| 424 | |
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[1022] | 425 | _Graph graph; |
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[989] | 426 | }; |
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[959] | 427 | }; |
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| 428 | |
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| 429 | |
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[989] | 430 | /// Skeleton class for graph NodeIt and EdgeIt |
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| 431 | |
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| 432 | /// Skeleton class for graph NodeIt and EdgeIt. |
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[959] | 433 | /// |
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[989] | 434 | template <typename _Graph, typename _Item> |
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| 435 | class GraphIterator : public _Item { |
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| 436 | public: |
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| 437 | /// \todo Don't we need the Item type as typedef? |
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[959] | 438 | |
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[989] | 439 | /// Default constructor. |
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| 440 | |
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| 441 | /// @warning The default constructor sets the iterator |
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| 442 | /// to an undefined value. |
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| 443 | GraphIterator() {} |
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| 444 | /// Copy constructor. |
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| 445 | |
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| 446 | /// Copy constructor. |
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| 447 | /// |
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| 448 | GraphIterator(GraphIterator const&) {} |
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| 449 | /// Sets the iterator to the first item. |
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| 450 | |
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| 451 | /// Sets the iterator to the first item of \c the graph. |
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| 452 | /// |
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| 453 | explicit GraphIterator(const _Graph&) {} |
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| 454 | /// Invalid constructor \& conversion. |
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| 455 | |
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| 456 | /// This constructor initializes the item to be invalid. |
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| 457 | /// \sa Invalid for more details. |
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| 458 | GraphIterator(Invalid) {} |
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| 459 | /// Assign operator for items. |
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| 460 | |
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| 461 | /// The items are assignable. |
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| 462 | /// |
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| 463 | GraphIterator& operator=(GraphIterator const&) { return *this; } |
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| 464 | /// Next item. |
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| 465 | |
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| 466 | /// Assign the iterator to the next item. |
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| 467 | /// |
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| 468 | GraphIterator& operator++() { return *this; } |
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| 469 | // Node operator*() const { return INVALID; } |
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| 470 | /// Equality operator |
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| 471 | |
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| 472 | /// Two iterators are equal if and only if they point to the |
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| 473 | /// same object or both are invalid. |
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| 474 | bool operator==(const GraphIterator&) const { return true;} |
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| 475 | /// Inequality operator |
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| 476 | |
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| 477 | /// \sa operator==(Node n) |
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| 478 | /// |
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| 479 | bool operator!=(const GraphIterator&) const { return true;} |
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| 480 | |
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| 481 | template<typename _GraphIterator> |
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| 482 | struct Constraints { |
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| 483 | void constraints() { |
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| 484 | // checkConcept< Item, _GraphIterator >(); |
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| 485 | _GraphIterator it1(g); |
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| 486 | |
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| 487 | /// \todo Do we need NodeIt(Node) kind of constructor? |
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| 488 | // _GraphIterator it2(bj); |
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| 489 | _GraphIterator it2; |
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| 490 | |
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| 491 | it2 = ++it1; |
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| 492 | ++it2 = it1; |
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| 493 | ++(++it1); |
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| 494 | /// \bug This should be: is_base_and_derived<BaseItem, _GraphIterator> |
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| 495 | _Item bi = it1; |
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| 496 | bi = it2; |
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| 497 | } |
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| 498 | _Graph& g; |
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| 499 | }; |
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[959] | 500 | }; |
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| 501 | |
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[989] | 502 | /// Skeleton class for graph InEdgeIt and OutEdgeIt |
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[959] | 503 | |
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[989] | 504 | /// \note Because InEdgeIt and OutEdgeIt may not inherit from the same |
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| 505 | /// base class, the _selector is a additional template parameter. For |
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| 506 | /// InEdgeIt you should instantiate it with character 'i' and for |
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| 507 | /// OutEdgeIt with 'o'. |
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[1021] | 508 | /// \todo Is this a good name for this concept? |
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| 509 | template <typename Graph, |
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| 510 | typename Edge = typename Graph::Edge, |
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| 511 | char _selector = '0'> |
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| 512 | class GraphIncIterator : public Edge { |
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[989] | 513 | public: |
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| 514 | /// Default constructor. |
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| 515 | |
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| 516 | /// @warning The default constructor sets the iterator |
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| 517 | /// to an undefined value. |
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[1021] | 518 | GraphIncIterator() {} |
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[989] | 519 | /// Copy constructor. |
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| 520 | |
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| 521 | /// Copy constructor. |
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| 522 | /// |
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[1021] | 523 | GraphIncIterator(GraphIncIterator const&) {} |
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[989] | 524 | /// Sets the iterator to the first edge incoming into or outgoing from the node. |
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| 525 | |
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| 526 | /// Sets the iterator to the first edge incoming into or outgoing from the node. |
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| 527 | /// |
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[1021] | 528 | explicit GraphIncIterator(const Graph&, const typename Graph::Node&) {} |
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[989] | 529 | /// Invalid constructor \& conversion. |
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| 530 | |
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| 531 | /// This constructor initializes the item to be invalid. |
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| 532 | /// \sa Invalid for more details. |
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[1021] | 533 | GraphIncIterator(Invalid) {} |
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[989] | 534 | /// Assign operator for nodes. |
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| 535 | |
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| 536 | /// The nodes are assignable. |
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| 537 | /// |
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[1021] | 538 | GraphIncIterator& operator=(GraphIncIterator const&) { return *this; } |
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[989] | 539 | /// Next edge. |
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| 540 | |
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| 541 | /// Assign the iterator to the next node. |
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| 542 | /// |
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[1021] | 543 | GraphIncIterator& operator++() { return *this; } |
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| 544 | |
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[989] | 545 | // Node operator*() const { return INVALID; } |
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[1021] | 546 | |
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[989] | 547 | /// Equality operator |
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| 548 | |
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| 549 | /// Two iterators are equal if and only if they point to the |
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| 550 | /// same object or both are invalid. |
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[1021] | 551 | bool operator==(const GraphIncIterator&) const { return true;} |
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| 552 | |
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[989] | 553 | /// Inequality operator |
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| 554 | |
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| 555 | /// \sa operator==(Node n) |
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| 556 | /// |
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[1021] | 557 | bool operator!=(const GraphIncIterator&) const { return true;} |
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[989] | 558 | |
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[1021] | 559 | template <typename _GraphIncIterator> |
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[989] | 560 | struct Constraints { |
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[1021] | 561 | typedef typename Graph::Node Node; |
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[989] | 562 | void constraints() { |
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[1021] | 563 | checkConcept<GraphItem<'e'>, _GraphIncIterator>(); |
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| 564 | _GraphIncIterator it1(graph, node); |
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[989] | 565 | /// \todo Do we need OutEdgeIt(Edge) kind of constructor? |
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[1021] | 566 | // _GraphIncIterator it2(edge); |
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| 567 | _GraphIncIterator it2; |
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[989] | 568 | |
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| 569 | it2 = ++it1; |
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| 570 | ++it2 = it1; |
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| 571 | ++(++it1); |
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| 572 | Edge e = it1; |
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| 573 | e = it2; |
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| 574 | } |
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| 575 | |
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| 576 | Edge& edge; |
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| 577 | Node& node; |
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[1021] | 578 | Graph& graph; |
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[989] | 579 | }; |
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| 580 | }; |
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[1021] | 581 | |
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| 582 | |
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[989] | 583 | /// An empty iterable base graph class. |
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| 584 | |
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| 585 | /// This class provides beside the core graph features |
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| 586 | /// iterator based iterable interface for the graph structure. |
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| 587 | /// This concept is part of the StaticGraphConcept. |
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| 588 | class IterableGraphComponent : virtual public BaseGraphComponent { |
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[959] | 589 | |
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| 590 | public: |
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| 591 | |
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| 592 | typedef IterableGraphComponent Graph; |
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| 593 | |
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| 594 | typedef BaseGraphComponent::Node Node; |
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| 595 | typedef BaseGraphComponent::Edge Edge; |
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| 596 | |
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[989] | 597 | /// This iterator goes through each node. |
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[959] | 598 | |
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[989] | 599 | /// This iterator goes through each node. |
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| 600 | /// |
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| 601 | typedef GraphIterator<Graph, Node> NodeIt; |
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| 602 | /// This iterator goes through each node. |
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[959] | 603 | |
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[989] | 604 | /// This iterator goes through each node. |
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| 605 | /// |
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| 606 | typedef GraphIterator<Graph, Edge> EdgeIt; |
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| 607 | /// This iterator goes trough the incoming edges of a node. |
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[959] | 608 | |
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[989] | 609 | /// This iterator goes trough the \e inccoming edges of a certain node |
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| 610 | /// of a graph. |
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[1021] | 611 | typedef GraphIncIterator<Graph, Edge, 'i'> InEdgeIt; |
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[989] | 612 | /// This iterator goes trough the outgoing edges of a node. |
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[959] | 613 | |
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[989] | 614 | /// This iterator goes trough the \e outgoing edges of a certain node |
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| 615 | /// of a graph. |
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[1021] | 616 | typedef GraphIncIterator<Graph, Edge, 'o'> OutEdgeIt; |
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[989] | 617 | }; |
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| 618 | |
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| 619 | template <typename _Graph> |
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| 620 | struct Constraints { |
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| 621 | void constraints() { |
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| 622 | checkConcept< BaseGraphComponent, _Graph>(); |
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[959] | 623 | |
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[989] | 624 | checkConcept<GraphIterator<_Graph, typename _Graph::Edge>, typename _Graph::EdgeIt >(); |
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| 625 | checkConcept<GraphIterator<_Graph, typename _Graph::Node>, typename _Graph::NodeIt >(); |
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[1021] | 626 | checkConcept<GraphIncIterator<_Graph>, typename _Graph::InEdgeIt >(); |
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| 627 | checkConcept<GraphIncIterator<_Graph>, typename _Graph::OutEdgeIt >(); |
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[989] | 628 | } |
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| 629 | }; |
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[959] | 630 | |
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| 631 | |
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[989] | 632 | template <typename Graph, typename Item, typename _Value> |
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| 633 | class GraphMap : public ReadWriteMap<Item, _Value> { |
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| 634 | protected: |
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| 635 | GraphMap() {} |
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| 636 | public: |
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| 637 | explicit GraphMap(const Graph&) {} |
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| 638 | GraphMap(const Graph&, const _Value&) {} |
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| 639 | GraphMap(const GraphMap&) {} |
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| 640 | |
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| 641 | GraphMap& operator=(const GraphMap&) { return *this;} |
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[959] | 642 | |
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[989] | 643 | template<typename _Map> |
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| 644 | struct Constraints { |
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| 645 | void constraints() { |
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| 646 | checkConcept<ReadWriteMap<Item, _Value>, _Map >(); |
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| 647 | // Construction with a graph parameter |
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| 648 | _Map a(g); |
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| 649 | // Constructor with a graph and a default value parameter |
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| 650 | _Map a2(g,t); |
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| 651 | // Copy constructor. Do we need it? |
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| 652 | _Map b=c; |
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| 653 | // Copy operator. Do we need it? |
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| 654 | a=b; |
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[959] | 655 | |
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[989] | 656 | ignore_unused_variable_warning(a2); |
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| 657 | } |
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[959] | 658 | |
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[989] | 659 | const _Map &c; |
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| 660 | const Graph &g; |
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| 661 | const typename GraphMap::Value &t; |
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[959] | 662 | }; |
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| 663 | |
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| 664 | }; |
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[961] | 665 | |
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[989] | 666 | /// An empty mappable base graph class. |
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[959] | 667 | |
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[989] | 668 | /// This class provides beside the core graph features |
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| 669 | /// map interface for the graph structure. |
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| 670 | /// This concept is part of the StaticGraphConcept. |
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[959] | 671 | class MappableGraphComponent : virtual public BaseGraphComponent { |
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| 672 | public: |
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| 673 | |
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| 674 | typedef MappableGraphComponent Graph; |
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| 675 | |
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| 676 | typedef BaseGraphComponent::Node Node; |
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| 677 | typedef BaseGraphComponent::Edge Edge; |
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| 678 | |
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[989] | 679 | /// ReadWrite map of the nodes. |
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| 680 | |
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| 681 | /// ReadWrite map of the nodes. |
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| 682 | /// |
---|
[987] | 683 | template <typename _Value> |
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[989] | 684 | class NodeMap : public GraphMap<Graph, Node, _Value> { |
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| 685 | private: |
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| 686 | NodeMap(); |
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[959] | 687 | public: |
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[989] | 688 | // \todo call the right parent class constructor |
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| 689 | explicit NodeMap(const Graph&) {} |
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[987] | 690 | NodeMap(const Graph&, const _Value&) {} |
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[959] | 691 | NodeMap(const NodeMap&) {} |
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| 692 | |
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| 693 | NodeMap& operator=(const NodeMap&) { return *this;} |
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[989] | 694 | |
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[959] | 695 | }; |
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| 696 | |
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[989] | 697 | /// ReadWrite map of the edges. |
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| 698 | |
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| 699 | /// ReadWrite map of the edges. |
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| 700 | /// |
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[987] | 701 | template <typename _Value> |
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[989] | 702 | class EdgeMap : public GraphMap<Graph, Edge, _Value> { |
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| 703 | private: |
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| 704 | EdgeMap(); |
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[959] | 705 | public: |
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[989] | 706 | // \todo call the right parent class constructor |
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| 707 | explicit EdgeMap(const Graph&) {} |
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[987] | 708 | EdgeMap(const Graph&, const _Value&) {} |
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[959] | 709 | EdgeMap(const EdgeMap&) {} |
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| 710 | |
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| 711 | EdgeMap& operator=(const EdgeMap&) { return *this;} |
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[989] | 712 | |
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[959] | 713 | }; |
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| 714 | |
---|
[989] | 715 | template <typename _Graph> |
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| 716 | struct Constraints { |
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[959] | 717 | |
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[989] | 718 | struct Type { |
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| 719 | int value; |
---|
| 720 | Type() : value(0) {} |
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| 721 | Type(int _v) : value(_v) {} |
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| 722 | }; |
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[959] | 723 | |
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[989] | 724 | void constraints() { |
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| 725 | checkConcept<BaseGraphComponent, _Graph>(); |
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| 726 | { // int map test |
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| 727 | typedef typename _Graph::template NodeMap<int> IntNodeMap; |
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| 728 | checkConcept<GraphMap<_Graph, typename _Graph::Node, int>, IntNodeMap >(); |
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| 729 | } { // bool map test |
---|
| 730 | typedef typename _Graph::template NodeMap<bool> BoolNodeMap; |
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| 731 | checkConcept<GraphMap<_Graph, typename _Graph::Node, bool>, BoolNodeMap >(); |
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| 732 | } { // Type map test |
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| 733 | typedef typename _Graph::template NodeMap<Type> TypeNodeMap; |
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| 734 | checkConcept<GraphMap<_Graph, typename _Graph::Node, Type>, TypeNodeMap >(); |
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| 735 | } |
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| 736 | |
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| 737 | { // int map test |
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| 738 | typedef typename _Graph::template EdgeMap<int> IntEdgeMap; |
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| 739 | checkConcept<GraphMap<_Graph, typename _Graph::Edge, int>, IntEdgeMap >(); |
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| 740 | } { // bool map test |
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| 741 | typedef typename _Graph::template EdgeMap<bool> BoolEdgeMap; |
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| 742 | checkConcept<GraphMap<_Graph, typename _Graph::Edge, bool>, BoolEdgeMap >(); |
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| 743 | } { // Type map test |
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| 744 | typedef typename _Graph::template EdgeMap<Type> TypeEdgeMap; |
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| 745 | checkConcept<GraphMap<_Graph, typename _Graph::Edge, Type>, TypeEdgeMap >(); |
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| 746 | } |
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| 747 | } |
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| 748 | |
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| 749 | _Graph& graph; |
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[959] | 750 | }; |
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| 751 | }; |
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| 752 | |
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| 753 | |
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| 754 | class ExtendableGraphComponent : virtual public BaseGraphComponent { |
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| 755 | public: |
---|
| 756 | |
---|
| 757 | typedef ExtendableGraphComponent Graph; |
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| 758 | |
---|
| 759 | typedef BaseGraphComponent::Node Node; |
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| 760 | typedef BaseGraphComponent::Edge Edge; |
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| 761 | |
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| 762 | Node addNode() { |
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| 763 | return INVALID; |
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| 764 | } |
---|
| 765 | |
---|
| 766 | Edge addEdge(const Node& from, const Node& to) { |
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| 767 | return INVALID; |
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| 768 | } |
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| 769 | |
---|
[989] | 770 | template <typename _Graph> |
---|
| 771 | struct Constraints { |
---|
| 772 | void constraints() { |
---|
| 773 | checkConcept<BaseGraphComponent, _Graph >(); |
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| 774 | typename _Graph::Node node_a, node_b; |
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| 775 | node_a = graph.addNode(); |
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| 776 | typename _Graph::Edge edge; |
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| 777 | edge = graph.addEdge(node_a, node_b); |
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| 778 | } |
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| 779 | _Graph& graph; |
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| 780 | }; |
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[959] | 781 | }; |
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| 782 | class ErasableGraphComponent : virtual public BaseGraphComponent { |
---|
| 783 | public: |
---|
| 784 | |
---|
| 785 | typedef ErasableGraphComponent Graph; |
---|
| 786 | |
---|
| 787 | typedef BaseGraphComponent::Node Node; |
---|
| 788 | typedef BaseGraphComponent::Edge Edge; |
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| 789 | |
---|
| 790 | void erase(const Node&) {} |
---|
| 791 | void erase(const Edge&) {} |
---|
| 792 | |
---|
[989] | 793 | template <typename _Graph> |
---|
| 794 | struct Constraints { |
---|
| 795 | void constraints() { |
---|
| 796 | checkConcept<BaseGraphComponent, _Graph >(); |
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| 797 | typename _Graph::Node node; |
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| 798 | graph.erase(node); |
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| 799 | typename _Graph::Edge edge; |
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| 800 | graph.erase(edge); |
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| 801 | } |
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[959] | 802 | |
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[989] | 803 | _Graph& graph; |
---|
| 804 | }; |
---|
[959] | 805 | }; |
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| 806 | |
---|
| 807 | } |
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| 808 | |
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| 809 | } |
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| 810 | |
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| 811 | #endif |
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