[946] | 1 | /* -*- C++ -*- |
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| 2 | * |
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[1956] | 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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[1359] | 7 | * (Egervary Research Group on Combinatorial Optimization, EGRES). |
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[946] | 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 | #ifndef LEMON_GRAPH_UTILS_H |
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| 20 | #define LEMON_GRAPH_UTILS_H |
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| 21 | |
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| 22 | #include <iterator> |
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[1419] | 23 | #include <vector> |
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[1402] | 24 | #include <map> |
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[1695] | 25 | #include <cmath> |
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[2235] | 26 | #include <algorithm> |
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[946] | 27 | |
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[1993] | 28 | #include <lemon/bits/invalid.h> |
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| 29 | #include <lemon/bits/utility.h> |
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[1413] | 30 | #include <lemon/maps.h> |
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[1993] | 31 | #include <lemon/bits/traits.h> |
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[1990] | 32 | |
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[1459] | 33 | #include <lemon/bits/alteration_notifier.h> |
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[1990] | 34 | #include <lemon/bits/default_map.h> |
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[946] | 35 | |
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[947] | 36 | ///\ingroup gutils |
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[946] | 37 | ///\file |
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[947] | 38 | ///\brief Graph utilities. |
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[946] | 39 | /// |
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[964] | 40 | /// |
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[946] | 41 | |
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| 42 | |
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| 43 | namespace lemon { |
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| 44 | |
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[1267] | 45 | /// \addtogroup gutils |
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| 46 | /// @{ |
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[947] | 47 | |
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[1756] | 48 | ///Creates convenience typedefs for the graph types and iterators |
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| 49 | |
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| 50 | ///This \c \#define creates convenience typedefs for the following types |
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| 51 | ///of \c Graph: \c Node, \c NodeIt, \c Edge, \c EdgeIt, \c InEdgeIt, |
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[2031] | 52 | ///\c OutEdgeIt |
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[1756] | 53 | ///\note If \c G it a template parameter, it should be used in this way. |
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| 54 | ///\code |
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| 55 | /// GRAPH_TYPEDEFS(typename G) |
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| 56 | ///\endcode |
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| 57 | /// |
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| 58 | ///\warning There are no typedefs for the graph maps because of the lack of |
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| 59 | ///template typedefs in C++. |
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[1804] | 60 | #define GRAPH_TYPEDEFS(Graph) \ |
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| 61 | typedef Graph:: Node Node; \ |
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| 62 | typedef Graph:: NodeIt NodeIt; \ |
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| 63 | typedef Graph:: Edge Edge; \ |
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| 64 | typedef Graph:: EdgeIt EdgeIt; \ |
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| 65 | typedef Graph:: InEdgeIt InEdgeIt; \ |
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[1811] | 66 | typedef Graph::OutEdgeIt OutEdgeIt; |
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[2031] | 67 | |
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[1756] | 68 | ///Creates convenience typedefs for the undirected graph types and iterators |
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| 69 | |
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| 70 | ///This \c \#define creates the same convenience typedefs as defined by |
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| 71 | ///\ref GRAPH_TYPEDEFS(Graph) and three more, namely it creates |
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[1909] | 72 | ///\c UEdge, \c UEdgeIt, \c IncEdgeIt, |
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[1756] | 73 | /// |
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| 74 | ///\note If \c G it a template parameter, it should be used in this way. |
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| 75 | ///\code |
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[1992] | 76 | /// UGRAPH_TYPEDEFS(typename G) |
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[1756] | 77 | ///\endcode |
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| 78 | /// |
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| 79 | ///\warning There are no typedefs for the graph maps because of the lack of |
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| 80 | ///template typedefs in C++. |
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[1992] | 81 | #define UGRAPH_TYPEDEFS(Graph) \ |
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[1804] | 82 | GRAPH_TYPEDEFS(Graph) \ |
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[1909] | 83 | typedef Graph:: UEdge UEdge; \ |
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| 84 | typedef Graph:: UEdgeIt UEdgeIt; \ |
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[1811] | 85 | typedef Graph:: IncEdgeIt IncEdgeIt; |
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[1756] | 86 | |
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[2031] | 87 | ///\brief Creates convenience typedefs for the bipartite undirected graph |
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| 88 | ///types and iterators |
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| 89 | |
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| 90 | ///This \c \#define creates the same convenience typedefs as defined by |
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| 91 | ///\ref UGRAPH_TYPEDEFS(Graph) and two more, namely it creates |
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| 92 | ///\c ANodeIt, \c BNodeIt, |
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| 93 | /// |
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| 94 | ///\note If \c G it a template parameter, it should be used in this way. |
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| 95 | ///\code |
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| 96 | /// BPUGRAPH_TYPEDEFS(typename G) |
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| 97 | ///\endcode |
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| 98 | /// |
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| 99 | ///\warning There are no typedefs for the graph maps because of the lack of |
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| 100 | ///template typedefs in C++. |
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| 101 | #define BPUGRAPH_TYPEDEFS(Graph) \ |
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| 102 | UGRAPH_TYPEDEFS(Graph) \ |
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[2286] | 103 | typedef Graph::ANode ANode; \ |
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| 104 | typedef Graph::BNode BNode; \ |
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[2031] | 105 | typedef Graph::ANodeIt ANodeIt; \ |
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| 106 | typedef Graph::BNodeIt BNodeIt; |
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[1756] | 107 | |
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[946] | 108 | /// \brief Function to count the items in the graph. |
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| 109 | /// |
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[1540] | 110 | /// This function counts the items (nodes, edges etc) in the graph. |
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[946] | 111 | /// The complexity of the function is O(n) because |
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| 112 | /// it iterates on all of the items. |
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| 113 | |
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[2020] | 114 | template <typename Graph, typename Item> |
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[977] | 115 | inline int countItems(const Graph& g) { |
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[2020] | 116 | typedef typename ItemSetTraits<Graph, Item>::ItemIt ItemIt; |
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[946] | 117 | int num = 0; |
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[977] | 118 | for (ItemIt it(g); it != INVALID; ++it) { |
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[946] | 119 | ++num; |
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| 120 | } |
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| 121 | return num; |
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| 122 | } |
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| 123 | |
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[977] | 124 | // Node counting: |
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| 125 | |
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[2020] | 126 | namespace _graph_utils_bits { |
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| 127 | |
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| 128 | template <typename Graph, typename Enable = void> |
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| 129 | struct CountNodesSelector { |
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| 130 | static int count(const Graph &g) { |
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| 131 | return countItems<Graph, typename Graph::Node>(g); |
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| 132 | } |
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| 133 | }; |
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[977] | 134 | |
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[2020] | 135 | template <typename Graph> |
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| 136 | struct CountNodesSelector< |
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| 137 | Graph, typename |
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| 138 | enable_if<typename Graph::NodeNumTag, void>::type> |
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| 139 | { |
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| 140 | static int count(const Graph &g) { |
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| 141 | return g.nodeNum(); |
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| 142 | } |
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| 143 | }; |
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[977] | 144 | } |
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| 145 | |
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[946] | 146 | /// \brief Function to count the nodes in the graph. |
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| 147 | /// |
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| 148 | /// This function counts the nodes in the graph. |
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| 149 | /// The complexity of the function is O(n) but for some |
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[1526] | 150 | /// graph structures it is specialized to run in O(1). |
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[977] | 151 | /// |
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| 152 | /// \todo refer how to specialize it |
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[946] | 153 | |
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| 154 | template <typename Graph> |
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[977] | 155 | inline int countNodes(const Graph& g) { |
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[2020] | 156 | return _graph_utils_bits::CountNodesSelector<Graph>::count(g); |
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[977] | 157 | } |
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| 158 | |
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[2029] | 159 | namespace _graph_utils_bits { |
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| 160 | |
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| 161 | template <typename Graph, typename Enable = void> |
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| 162 | struct CountANodesSelector { |
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| 163 | static int count(const Graph &g) { |
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| 164 | return countItems<Graph, typename Graph::ANode>(g); |
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| 165 | } |
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| 166 | }; |
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| 167 | |
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| 168 | template <typename Graph> |
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| 169 | struct CountANodesSelector< |
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| 170 | Graph, typename |
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| 171 | enable_if<typename Graph::NodeNumTag, void>::type> |
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| 172 | { |
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| 173 | static int count(const Graph &g) { |
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[2186] | 174 | return g.aNodeNum(); |
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[2029] | 175 | } |
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| 176 | }; |
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| 177 | } |
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| 178 | |
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| 179 | /// \brief Function to count the anodes in the graph. |
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| 180 | /// |
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| 181 | /// This function counts the anodes in the graph. |
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| 182 | /// The complexity of the function is O(an) but for some |
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| 183 | /// graph structures it is specialized to run in O(1). |
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| 184 | /// |
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| 185 | /// \todo refer how to specialize it |
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| 186 | |
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| 187 | template <typename Graph> |
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| 188 | inline int countANodes(const Graph& g) { |
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| 189 | return _graph_utils_bits::CountANodesSelector<Graph>::count(g); |
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| 190 | } |
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| 191 | |
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| 192 | namespace _graph_utils_bits { |
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| 193 | |
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| 194 | template <typename Graph, typename Enable = void> |
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| 195 | struct CountBNodesSelector { |
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| 196 | static int count(const Graph &g) { |
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| 197 | return countItems<Graph, typename Graph::BNode>(g); |
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| 198 | } |
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| 199 | }; |
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| 200 | |
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| 201 | template <typename Graph> |
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| 202 | struct CountBNodesSelector< |
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| 203 | Graph, typename |
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| 204 | enable_if<typename Graph::NodeNumTag, void>::type> |
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| 205 | { |
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| 206 | static int count(const Graph &g) { |
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[2186] | 207 | return g.bNodeNum(); |
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[2029] | 208 | } |
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| 209 | }; |
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| 210 | } |
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| 211 | |
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| 212 | /// \brief Function to count the bnodes in the graph. |
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| 213 | /// |
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| 214 | /// This function counts the bnodes in the graph. |
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| 215 | /// The complexity of the function is O(bn) but for some |
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| 216 | /// graph structures it is specialized to run in O(1). |
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| 217 | /// |
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| 218 | /// \todo refer how to specialize it |
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| 219 | |
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| 220 | template <typename Graph> |
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| 221 | inline int countBNodes(const Graph& g) { |
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| 222 | return _graph_utils_bits::CountBNodesSelector<Graph>::count(g); |
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| 223 | } |
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| 224 | |
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[2020] | 225 | |
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[977] | 226 | // Edge counting: |
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| 227 | |
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[2020] | 228 | namespace _graph_utils_bits { |
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| 229 | |
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| 230 | template <typename Graph, typename Enable = void> |
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| 231 | struct CountEdgesSelector { |
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| 232 | static int count(const Graph &g) { |
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| 233 | return countItems<Graph, typename Graph::Edge>(g); |
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| 234 | } |
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| 235 | }; |
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[977] | 236 | |
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[2020] | 237 | template <typename Graph> |
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| 238 | struct CountEdgesSelector< |
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| 239 | Graph, |
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| 240 | typename enable_if<typename Graph::EdgeNumTag, void>::type> |
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| 241 | { |
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| 242 | static int count(const Graph &g) { |
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| 243 | return g.edgeNum(); |
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| 244 | } |
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| 245 | }; |
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[946] | 246 | } |
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| 247 | |
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| 248 | /// \brief Function to count the edges in the graph. |
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| 249 | /// |
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| 250 | /// This function counts the edges in the graph. |
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| 251 | /// The complexity of the function is O(e) but for some |
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[1526] | 252 | /// graph structures it is specialized to run in O(1). |
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[977] | 253 | |
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[946] | 254 | template <typename Graph> |
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[977] | 255 | inline int countEdges(const Graph& g) { |
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[2020] | 256 | return _graph_utils_bits::CountEdgesSelector<Graph>::count(g); |
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[946] | 257 | } |
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| 258 | |
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[1053] | 259 | // Undirected edge counting: |
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[2020] | 260 | namespace _graph_utils_bits { |
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| 261 | |
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| 262 | template <typename Graph, typename Enable = void> |
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| 263 | struct CountUEdgesSelector { |
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| 264 | static int count(const Graph &g) { |
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| 265 | return countItems<Graph, typename Graph::UEdge>(g); |
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| 266 | } |
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| 267 | }; |
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[1053] | 268 | |
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[2020] | 269 | template <typename Graph> |
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| 270 | struct CountUEdgesSelector< |
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| 271 | Graph, |
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| 272 | typename enable_if<typename Graph::EdgeNumTag, void>::type> |
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| 273 | { |
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| 274 | static int count(const Graph &g) { |
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| 275 | return g.uEdgeNum(); |
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| 276 | } |
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| 277 | }; |
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[1053] | 278 | } |
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| 279 | |
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[1526] | 280 | /// \brief Function to count the undirected edges in the graph. |
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[946] | 281 | /// |
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[1526] | 282 | /// This function counts the undirected edges in the graph. |
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[946] | 283 | /// The complexity of the function is O(e) but for some |
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[1540] | 284 | /// graph structures it is specialized to run in O(1). |
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[1053] | 285 | |
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[946] | 286 | template <typename Graph> |
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[1909] | 287 | inline int countUEdges(const Graph& g) { |
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[2020] | 288 | return _graph_utils_bits::CountUEdgesSelector<Graph>::count(g); |
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| 289 | |
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[946] | 290 | } |
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| 291 | |
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[977] | 292 | |
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[946] | 293 | template <typename Graph, typename DegIt> |
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| 294 | inline int countNodeDegree(const Graph& _g, const typename Graph::Node& _n) { |
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| 295 | int num = 0; |
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| 296 | for (DegIt it(_g, _n); it != INVALID; ++it) { |
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| 297 | ++num; |
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| 298 | } |
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| 299 | return num; |
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| 300 | } |
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[967] | 301 | |
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[1531] | 302 | /// \brief Function to count the number of the out-edges from node \c n. |
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| 303 | /// |
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| 304 | /// This function counts the number of the out-edges from node \c n |
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| 305 | /// in the graph. |
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| 306 | template <typename Graph> |
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| 307 | inline int countOutEdges(const Graph& _g, const typename Graph::Node& _n) { |
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| 308 | return countNodeDegree<Graph, typename Graph::OutEdgeIt>(_g, _n); |
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| 309 | } |
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| 310 | |
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| 311 | /// \brief Function to count the number of the in-edges to node \c n. |
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| 312 | /// |
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| 313 | /// This function counts the number of the in-edges to node \c n |
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| 314 | /// in the graph. |
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| 315 | template <typename Graph> |
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| 316 | inline int countInEdges(const Graph& _g, const typename Graph::Node& _n) { |
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| 317 | return countNodeDegree<Graph, typename Graph::InEdgeIt>(_g, _n); |
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| 318 | } |
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| 319 | |
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[1704] | 320 | /// \brief Function to count the number of the inc-edges to node \c n. |
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[1679] | 321 | /// |
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[1704] | 322 | /// This function counts the number of the inc-edges to node \c n |
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[1679] | 323 | /// in the graph. |
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| 324 | template <typename Graph> |
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| 325 | inline int countIncEdges(const Graph& _g, const typename Graph::Node& _n) { |
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| 326 | return countNodeDegree<Graph, typename Graph::IncEdgeIt>(_g, _n); |
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| 327 | } |
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| 328 | |
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[2020] | 329 | namespace _graph_utils_bits { |
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| 330 | |
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| 331 | template <typename Graph, typename Enable = void> |
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| 332 | struct FindEdgeSelector { |
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| 333 | typedef typename Graph::Node Node; |
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| 334 | typedef typename Graph::Edge Edge; |
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| 335 | static Edge find(const Graph &g, Node u, Node v, Edge e) { |
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| 336 | if (e == INVALID) { |
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| 337 | g.firstOut(e, u); |
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| 338 | } else { |
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| 339 | g.nextOut(e); |
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| 340 | } |
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| 341 | while (e != INVALID && g.target(e) != v) { |
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| 342 | g.nextOut(e); |
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| 343 | } |
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| 344 | return e; |
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| 345 | } |
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| 346 | }; |
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[1531] | 347 | |
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[2020] | 348 | template <typename Graph> |
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| 349 | struct FindEdgeSelector< |
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| 350 | Graph, |
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| 351 | typename enable_if<typename Graph::FindEdgeTag, void>::type> |
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| 352 | { |
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| 353 | typedef typename Graph::Node Node; |
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| 354 | typedef typename Graph::Edge Edge; |
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| 355 | static Edge find(const Graph &g, Node u, Node v, Edge prev) { |
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| 356 | return g.findEdge(u, v, prev); |
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| 357 | } |
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| 358 | }; |
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[1565] | 359 | } |
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| 360 | |
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| 361 | /// \brief Finds an edge between two nodes of a graph. |
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| 362 | /// |
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[967] | 363 | /// Finds an edge from node \c u to node \c v in graph \c g. |
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| 364 | /// |
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| 365 | /// If \c prev is \ref INVALID (this is the default value), then |
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| 366 | /// it finds the first edge from \c u to \c v. Otherwise it looks for |
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| 367 | /// the next edge from \c u to \c v after \c prev. |
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| 368 | /// \return The found edge or \ref INVALID if there is no such an edge. |
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| 369 | /// |
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| 370 | /// Thus you can iterate through each edge from \c u to \c v as it follows. |
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[1946] | 371 | ///\code |
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[967] | 372 | /// for(Edge e=findEdge(g,u,v);e!=INVALID;e=findEdge(g,u,v,e)) { |
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| 373 | /// ... |
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| 374 | /// } |
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[1946] | 375 | ///\endcode |
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[2155] | 376 | /// |
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[2235] | 377 | ///\sa EdgeLookUp |
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| 378 | ///\se AllEdgeLookup |
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[2155] | 379 | ///\sa ConEdgeIt |
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[967] | 380 | template <typename Graph> |
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[2286] | 381 | inline typename Graph::Edge |
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| 382 | findEdge(const Graph &g, typename Graph::Node u, typename Graph::Node v, |
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| 383 | typename Graph::Edge prev = INVALID) { |
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[2020] | 384 | return _graph_utils_bits::FindEdgeSelector<Graph>::find(g, u, v, prev); |
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[967] | 385 | } |
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[1531] | 386 | |
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[1565] | 387 | /// \brief Iterator for iterating on edges connected the same nodes. |
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| 388 | /// |
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| 389 | /// Iterator for iterating on edges connected the same nodes. It is |
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| 390 | /// higher level interface for the findEdge() function. You can |
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[1591] | 391 | /// use it the following way: |
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[1946] | 392 | ///\code |
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[1565] | 393 | /// for (ConEdgeIt<Graph> it(g, src, trg); it != INVALID; ++it) { |
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| 394 | /// ... |
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| 395 | /// } |
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[1946] | 396 | ///\endcode |
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[2155] | 397 | /// |
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| 398 | ///\sa findEdge() |
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[2235] | 399 | ///\sa EdgeLookUp |
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| 400 | ///\se AllEdgeLookup |
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[1565] | 401 | /// |
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| 402 | /// \author Balazs Dezso |
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| 403 | template <typename _Graph> |
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| 404 | class ConEdgeIt : public _Graph::Edge { |
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| 405 | public: |
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| 406 | |
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| 407 | typedef _Graph Graph; |
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| 408 | typedef typename Graph::Edge Parent; |
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| 409 | |
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| 410 | typedef typename Graph::Edge Edge; |
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| 411 | typedef typename Graph::Node Node; |
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| 412 | |
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| 413 | /// \brief Constructor. |
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| 414 | /// |
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| 415 | /// Construct a new ConEdgeIt iterating on the edges which |
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| 416 | /// connects the \c u and \c v node. |
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| 417 | ConEdgeIt(const Graph& g, Node u, Node v) : graph(g) { |
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| 418 | Parent::operator=(findEdge(graph, u, v)); |
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| 419 | } |
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| 420 | |
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| 421 | /// \brief Constructor. |
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| 422 | /// |
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| 423 | /// Construct a new ConEdgeIt which continues the iterating from |
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| 424 | /// the \c e edge. |
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| 425 | ConEdgeIt(const Graph& g, Edge e) : Parent(e), graph(g) {} |
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| 426 | |
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| 427 | /// \brief Increment operator. |
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| 428 | /// |
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| 429 | /// It increments the iterator and gives back the next edge. |
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| 430 | ConEdgeIt& operator++() { |
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| 431 | Parent::operator=(findEdge(graph, graph.source(*this), |
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| 432 | graph.target(*this), *this)); |
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| 433 | return *this; |
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| 434 | } |
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| 435 | private: |
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| 436 | const Graph& graph; |
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| 437 | }; |
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| 438 | |
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[2020] | 439 | namespace _graph_utils_bits { |
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| 440 | |
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| 441 | template <typename Graph, typename Enable = void> |
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| 442 | struct FindUEdgeSelector { |
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| 443 | typedef typename Graph::Node Node; |
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| 444 | typedef typename Graph::UEdge UEdge; |
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| 445 | static UEdge find(const Graph &g, Node u, Node v, UEdge e) { |
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| 446 | bool b; |
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| 447 | if (u != v) { |
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| 448 | if (e == INVALID) { |
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[2031] | 449 | g.firstInc(e, b, u); |
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[2020] | 450 | } else { |
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| 451 | b = g.source(e) == u; |
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| 452 | g.nextInc(e, b); |
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| 453 | } |
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[2064] | 454 | while (e != INVALID && (b ? g.target(e) : g.source(e)) != v) { |
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[2020] | 455 | g.nextInc(e, b); |
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| 456 | } |
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| 457 | } else { |
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| 458 | if (e == INVALID) { |
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[2031] | 459 | g.firstInc(e, b, u); |
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[2020] | 460 | } else { |
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| 461 | b = true; |
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| 462 | g.nextInc(e, b); |
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| 463 | } |
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| 464 | while (e != INVALID && (!b || g.target(e) != v)) { |
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| 465 | g.nextInc(e, b); |
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| 466 | } |
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| 467 | } |
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| 468 | return e; |
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| 469 | } |
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| 470 | }; |
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[1704] | 471 | |
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[2020] | 472 | template <typename Graph> |
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| 473 | struct FindUEdgeSelector< |
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| 474 | Graph, |
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| 475 | typename enable_if<typename Graph::FindEdgeTag, void>::type> |
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| 476 | { |
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| 477 | typedef typename Graph::Node Node; |
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| 478 | typedef typename Graph::UEdge UEdge; |
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| 479 | static UEdge find(const Graph &g, Node u, Node v, UEdge prev) { |
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| 480 | return g.findUEdge(u, v, prev); |
---|
| 481 | } |
---|
| 482 | }; |
---|
[1704] | 483 | } |
---|
| 484 | |
---|
[1909] | 485 | /// \brief Finds an uedge between two nodes of a graph. |
---|
[1704] | 486 | /// |
---|
[1909] | 487 | /// Finds an uedge from node \c u to node \c v in graph \c g. |
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[2020] | 488 | /// If the node \c u and node \c v is equal then each loop edge |
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| 489 | /// will be enumerated. |
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[1704] | 490 | /// |
---|
| 491 | /// If \c prev is \ref INVALID (this is the default value), then |
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| 492 | /// it finds the first edge from \c u to \c v. Otherwise it looks for |
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| 493 | /// the next edge from \c u to \c v after \c prev. |
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| 494 | /// \return The found edge or \ref INVALID if there is no such an edge. |
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| 495 | /// |
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| 496 | /// Thus you can iterate through each edge from \c u to \c v as it follows. |
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[1946] | 497 | ///\code |
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[1909] | 498 | /// for(UEdge e = findUEdge(g,u,v); e != INVALID; |
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| 499 | /// e = findUEdge(g,u,v,e)) { |
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[1704] | 500 | /// ... |
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| 501 | /// } |
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[1946] | 502 | ///\endcode |
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[2155] | 503 | /// |
---|
| 504 | ///\sa ConEdgeIt |
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| 505 | |
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[1704] | 506 | template <typename Graph> |
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[2286] | 507 | inline typename Graph::UEdge |
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| 508 | findUEdge(const Graph &g, typename Graph::Node u, typename Graph::Node v, |
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| 509 | typename Graph::UEdge p = INVALID) { |
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[2031] | 510 | return _graph_utils_bits::FindUEdgeSelector<Graph>::find(g, u, v, p); |
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[1704] | 511 | } |
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| 512 | |
---|
[1909] | 513 | /// \brief Iterator for iterating on uedges connected the same nodes. |
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[1704] | 514 | /// |
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[1909] | 515 | /// Iterator for iterating on uedges connected the same nodes. It is |
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| 516 | /// higher level interface for the findUEdge() function. You can |
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[1704] | 517 | /// use it the following way: |
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[1946] | 518 | ///\code |
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[1909] | 519 | /// for (ConUEdgeIt<Graph> it(g, src, trg); it != INVALID; ++it) { |
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[1704] | 520 | /// ... |
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| 521 | /// } |
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[1946] | 522 | ///\endcode |
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[1704] | 523 | /// |
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[2155] | 524 | ///\sa findUEdge() |
---|
| 525 | /// |
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[1704] | 526 | /// \author Balazs Dezso |
---|
| 527 | template <typename _Graph> |
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[1909] | 528 | class ConUEdgeIt : public _Graph::UEdge { |
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[1704] | 529 | public: |
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| 530 | |
---|
| 531 | typedef _Graph Graph; |
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[1909] | 532 | typedef typename Graph::UEdge Parent; |
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[1704] | 533 | |
---|
[1909] | 534 | typedef typename Graph::UEdge UEdge; |
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[1704] | 535 | typedef typename Graph::Node Node; |
---|
| 536 | |
---|
| 537 | /// \brief Constructor. |
---|
| 538 | /// |
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[1909] | 539 | /// Construct a new ConUEdgeIt iterating on the edges which |
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[1704] | 540 | /// connects the \c u and \c v node. |
---|
[1909] | 541 | ConUEdgeIt(const Graph& g, Node u, Node v) : graph(g) { |
---|
| 542 | Parent::operator=(findUEdge(graph, u, v)); |
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[1704] | 543 | } |
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| 544 | |
---|
| 545 | /// \brief Constructor. |
---|
| 546 | /// |
---|
[1909] | 547 | /// Construct a new ConUEdgeIt which continues the iterating from |
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[1704] | 548 | /// the \c e edge. |
---|
[1909] | 549 | ConUEdgeIt(const Graph& g, UEdge e) : Parent(e), graph(g) {} |
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[1704] | 550 | |
---|
| 551 | /// \brief Increment operator. |
---|
| 552 | /// |
---|
| 553 | /// It increments the iterator and gives back the next edge. |
---|
[1909] | 554 | ConUEdgeIt& operator++() { |
---|
| 555 | Parent::operator=(findUEdge(graph, graph.source(*this), |
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[1829] | 556 | graph.target(*this), *this)); |
---|
[1704] | 557 | return *this; |
---|
| 558 | } |
---|
| 559 | private: |
---|
| 560 | const Graph& graph; |
---|
| 561 | }; |
---|
| 562 | |
---|
[1540] | 563 | /// \brief Copy a map. |
---|
[964] | 564 | /// |
---|
[1547] | 565 | /// This function copies the \c source map to the \c target map. It uses the |
---|
[1540] | 566 | /// given iterator to iterate on the data structure and it uses the \c ref |
---|
| 567 | /// mapping to convert the source's keys to the target's keys. |
---|
[1531] | 568 | template <typename Target, typename Source, |
---|
| 569 | typename ItemIt, typename Ref> |
---|
| 570 | void copyMap(Target& target, const Source& source, |
---|
| 571 | ItemIt it, const Ref& ref) { |
---|
| 572 | for (; it != INVALID; ++it) { |
---|
| 573 | target[ref[it]] = source[it]; |
---|
[946] | 574 | } |
---|
| 575 | } |
---|
| 576 | |
---|
[1531] | 577 | /// \brief Copy the source map to the target map. |
---|
| 578 | /// |
---|
| 579 | /// Copy the \c source map to the \c target map. It uses the given iterator |
---|
| 580 | /// to iterate on the data structure. |
---|
[1830] | 581 | template <typename Target, typename Source, typename ItemIt> |
---|
[1531] | 582 | void copyMap(Target& target, const Source& source, ItemIt it) { |
---|
| 583 | for (; it != INVALID; ++it) { |
---|
| 584 | target[it] = source[it]; |
---|
[946] | 585 | } |
---|
| 586 | } |
---|
| 587 | |
---|
[2286] | 588 | namespace _graph_utils_bits { |
---|
| 589 | |
---|
| 590 | template <typename Graph, typename Item, typename RefMap> |
---|
| 591 | class MapCopyBase { |
---|
| 592 | public: |
---|
| 593 | virtual void copy(const Graph& source, const RefMap& refMap) = 0; |
---|
| 594 | |
---|
| 595 | virtual ~MapCopyBase() {} |
---|
| 596 | }; |
---|
| 597 | |
---|
| 598 | template <typename Graph, typename Item, typename RefMap, |
---|
| 599 | typename TargetMap, typename SourceMap> |
---|
| 600 | class MapCopy : public MapCopyBase<Graph, Item, RefMap> { |
---|
| 601 | public: |
---|
| 602 | |
---|
| 603 | MapCopy(TargetMap& tmap, const SourceMap& map) |
---|
| 604 | : _tmap(tmap), _map(map) {} |
---|
| 605 | |
---|
| 606 | virtual void copy(const Graph& graph, const RefMap& refMap) { |
---|
| 607 | typedef typename ItemSetTraits<Graph, Item>::ItemIt ItemIt; |
---|
| 608 | for (ItemIt it(graph); it != INVALID; ++it) { |
---|
| 609 | _tmap.set(refMap[it], _map[it]); |
---|
| 610 | } |
---|
| 611 | } |
---|
| 612 | |
---|
| 613 | private: |
---|
| 614 | TargetMap& _tmap; |
---|
| 615 | const SourceMap& _map; |
---|
| 616 | }; |
---|
| 617 | |
---|
[2290] | 618 | template <typename Graph, typename Item, typename RefMap, typename It> |
---|
| 619 | class ItemCopy : public MapCopyBase<Graph, Item, RefMap> { |
---|
| 620 | public: |
---|
| 621 | |
---|
| 622 | ItemCopy(It& it, const Item& item) : _it(it), _item(item) {} |
---|
| 623 | |
---|
| 624 | virtual void copy(const Graph&, const RefMap& refMap) { |
---|
| 625 | _it = refMap[_item]; |
---|
| 626 | } |
---|
| 627 | |
---|
| 628 | private: |
---|
| 629 | It& _it; |
---|
| 630 | Item _item; |
---|
| 631 | }; |
---|
| 632 | |
---|
[2286] | 633 | template <typename Graph, typename Item, typename RefMap, typename Ref> |
---|
| 634 | class RefCopy : public MapCopyBase<Graph, Item, RefMap> { |
---|
| 635 | public: |
---|
| 636 | |
---|
| 637 | RefCopy(Ref& map) : _map(map) {} |
---|
| 638 | |
---|
| 639 | virtual void copy(const Graph& graph, const RefMap& refMap) { |
---|
| 640 | typedef typename ItemSetTraits<Graph, Item>::ItemIt ItemIt; |
---|
| 641 | for (ItemIt it(graph); it != INVALID; ++it) { |
---|
| 642 | _map.set(it, refMap[it]); |
---|
| 643 | } |
---|
| 644 | } |
---|
| 645 | |
---|
| 646 | private: |
---|
| 647 | Ref& _map; |
---|
| 648 | }; |
---|
| 649 | |
---|
| 650 | template <typename Graph, typename Item, typename RefMap, |
---|
| 651 | typename CrossRef> |
---|
| 652 | class CrossRefCopy : public MapCopyBase<Graph, Item, RefMap> { |
---|
| 653 | public: |
---|
| 654 | |
---|
| 655 | CrossRefCopy(CrossRef& cmap) : _cmap(cmap) {} |
---|
| 656 | |
---|
| 657 | virtual void copy(const Graph& graph, const RefMap& refMap) { |
---|
| 658 | typedef typename ItemSetTraits<Graph, Item>::ItemIt ItemIt; |
---|
| 659 | for (ItemIt it(graph); it != INVALID; ++it) { |
---|
| 660 | _cmap.set(refMap[it], it); |
---|
| 661 | } |
---|
| 662 | } |
---|
| 663 | |
---|
| 664 | private: |
---|
| 665 | CrossRef& _cmap; |
---|
| 666 | }; |
---|
| 667 | |
---|
[2290] | 668 | template <typename Graph, typename Enable = void> |
---|
| 669 | struct GraphCopySelector { |
---|
| 670 | template <typename Source, typename NodeRefMap, typename EdgeRefMap> |
---|
| 671 | static void copy(Graph &target, const Source& source, |
---|
| 672 | NodeRefMap& nodeRefMap, EdgeRefMap& edgeRefMap) { |
---|
| 673 | for (typename Source::NodeIt it(source); it != INVALID; ++it) { |
---|
| 674 | nodeRefMap[it] = target.addNode(); |
---|
| 675 | } |
---|
| 676 | for (typename Source::EdgeIt it(source); it != INVALID; ++it) { |
---|
| 677 | edgeRefMap[it] = target.addEdge(nodeRefMap[source.source(it)], |
---|
| 678 | nodeRefMap[source.target(it)]); |
---|
| 679 | } |
---|
| 680 | } |
---|
| 681 | }; |
---|
| 682 | |
---|
| 683 | template <typename Graph> |
---|
| 684 | struct GraphCopySelector< |
---|
| 685 | Graph, |
---|
| 686 | typename enable_if<typename Graph::CloneableTag, void>::type> |
---|
| 687 | { |
---|
| 688 | template <typename Source, typename NodeRefMap, typename EdgeRefMap> |
---|
| 689 | static void copy(Graph &target, const Source& source, |
---|
| 690 | NodeRefMap& nodeRefMap, EdgeRefMap& edgeRefMap) { |
---|
| 691 | target.clone(source, nodeRefMap, edgeRefMap); |
---|
| 692 | } |
---|
| 693 | }; |
---|
| 694 | |
---|
| 695 | template <typename UGraph, typename Enable = void> |
---|
| 696 | struct UGraphCopySelector { |
---|
| 697 | template <typename Source, typename NodeRefMap, typename UEdgeRefMap> |
---|
| 698 | static void copy(UGraph &target, const Source& source, |
---|
| 699 | NodeRefMap& nodeRefMap, UEdgeRefMap& uEdgeRefMap) { |
---|
| 700 | for (typename Source::NodeIt it(source); it != INVALID; ++it) { |
---|
| 701 | nodeRefMap[it] = target.addNode(); |
---|
| 702 | } |
---|
| 703 | for (typename Source::UEdgeIt it(source); it != INVALID; ++it) { |
---|
| 704 | uEdgeRefMap[it] = target.addEdge(nodeRefMap[source.source(it)], |
---|
| 705 | nodeRefMap[source.target(it)]); |
---|
| 706 | } |
---|
| 707 | } |
---|
| 708 | }; |
---|
| 709 | |
---|
| 710 | template <typename UGraph> |
---|
| 711 | struct UGraphCopySelector< |
---|
| 712 | UGraph, |
---|
| 713 | typename enable_if<typename UGraph::CloneableTag, void>::type> |
---|
| 714 | { |
---|
| 715 | template <typename Source, typename NodeRefMap, typename UEdgeRefMap> |
---|
| 716 | static void copy(UGraph &target, const Source& source, |
---|
| 717 | NodeRefMap& nodeRefMap, UEdgeRefMap& uEdgeRefMap) { |
---|
| 718 | target.clone(source, nodeRefMap, uEdgeRefMap); |
---|
| 719 | } |
---|
| 720 | }; |
---|
| 721 | |
---|
| 722 | template <typename BpUGraph, typename Enable = void> |
---|
| 723 | struct BpUGraphCopySelector { |
---|
| 724 | template <typename Source, typename ANodeRefMap, |
---|
| 725 | typename BNodeRefMap, typename UEdgeRefMap> |
---|
| 726 | static void copy(BpUGraph &target, const Source& source, |
---|
| 727 | ANodeRefMap& aNodeRefMap, BNodeRefMap& bNodeRefMap, |
---|
| 728 | UEdgeRefMap& uEdgeRefMap) { |
---|
| 729 | for (typename Source::ANodeIt it(source); it != INVALID; ++it) { |
---|
| 730 | aNodeRefMap[it] = target.addANode(); |
---|
| 731 | } |
---|
| 732 | for (typename Source::BNodeIt it(source); it != INVALID; ++it) { |
---|
| 733 | bNodeRefMap[it] = target.addBNode(); |
---|
| 734 | } |
---|
| 735 | for (typename Source::UEdgeIt it(source); it != INVALID; ++it) { |
---|
| 736 | uEdgeRefMap[it] = target.addEdge(aNodeRefMap[source.aNode(it)], |
---|
| 737 | bNodeRefMap[source.bNode(it)]); |
---|
| 738 | } |
---|
| 739 | } |
---|
| 740 | }; |
---|
| 741 | |
---|
| 742 | template <typename BpUGraph> |
---|
| 743 | struct BpUGraphCopySelector< |
---|
| 744 | BpUGraph, |
---|
| 745 | typename enable_if<typename BpUGraph::CloneableTag, void>::type> |
---|
| 746 | { |
---|
| 747 | template <typename Source, typename ANodeRefMap, |
---|
| 748 | typename BNodeRefMap, typename UEdgeRefMap> |
---|
| 749 | static void copy(BpUGraph &target, const Source& source, |
---|
| 750 | ANodeRefMap& aNodeRefMap, BNodeRefMap& bNodeRefMap, |
---|
| 751 | UEdgeRefMap& uEdgeRefMap) { |
---|
| 752 | target.clone(source, aNodeRefMap, bNodeRefMap, uEdgeRefMap); |
---|
| 753 | } |
---|
| 754 | }; |
---|
| 755 | |
---|
| 756 | |
---|
[2286] | 757 | } |
---|
| 758 | |
---|
[1540] | 759 | /// \brief Class to copy a graph. |
---|
[1531] | 760 | /// |
---|
[2006] | 761 | /// Class to copy a graph to another graph (duplicate a graph). The |
---|
[1540] | 762 | /// simplest way of using it is through the \c copyGraph() function. |
---|
[1531] | 763 | template <typename Target, typename Source> |
---|
[1267] | 764 | class GraphCopy { |
---|
[2286] | 765 | private: |
---|
| 766 | |
---|
[1531] | 767 | typedef typename Source::Node Node; |
---|
| 768 | typedef typename Source::NodeIt NodeIt; |
---|
| 769 | typedef typename Source::Edge Edge; |
---|
| 770 | typedef typename Source::EdgeIt EdgeIt; |
---|
[946] | 771 | |
---|
[2286] | 772 | typedef typename Target::Node TNode; |
---|
| 773 | typedef typename Target::Edge TEdge; |
---|
| 774 | |
---|
| 775 | typedef typename Source::template NodeMap<TNode> NodeRefMap; |
---|
| 776 | typedef typename Source::template EdgeMap<TEdge> EdgeRefMap; |
---|
| 777 | |
---|
| 778 | |
---|
| 779 | public: |
---|
| 780 | |
---|
[946] | 781 | |
---|
[1531] | 782 | /// \brief Constructor for the GraphCopy. |
---|
| 783 | /// |
---|
| 784 | /// It copies the content of the \c _source graph into the |
---|
[2286] | 785 | /// \c _target graph. |
---|
[1531] | 786 | GraphCopy(Target& _target, const Source& _source) |
---|
[2286] | 787 | : source(_source), target(_target) {} |
---|
| 788 | |
---|
| 789 | /// \brief Destructor of the GraphCopy |
---|
| 790 | /// |
---|
| 791 | /// Destructor of the GraphCopy |
---|
| 792 | ~GraphCopy() { |
---|
| 793 | for (int i = 0; i < (int)nodeMapCopies.size(); ++i) { |
---|
| 794 | delete nodeMapCopies[i]; |
---|
[1531] | 795 | } |
---|
[2286] | 796 | for (int i = 0; i < (int)edgeMapCopies.size(); ++i) { |
---|
| 797 | delete edgeMapCopies[i]; |
---|
[1531] | 798 | } |
---|
[2286] | 799 | |
---|
[1267] | 800 | } |
---|
[946] | 801 | |
---|
[1531] | 802 | /// \brief Copies the node references into the given map. |
---|
| 803 | /// |
---|
| 804 | /// Copies the node references into the given map. |
---|
| 805 | template <typename NodeRef> |
---|
[2286] | 806 | GraphCopy& nodeRef(NodeRef& map) { |
---|
| 807 | nodeMapCopies.push_back(new _graph_utils_bits::RefCopy<Source, Node, |
---|
| 808 | NodeRefMap, NodeRef>(map)); |
---|
[1531] | 809 | return *this; |
---|
[1267] | 810 | } |
---|
[1531] | 811 | |
---|
[2290] | 812 | /// \brief Copies the node cross references into the given map. |
---|
[1531] | 813 | /// |
---|
[2290] | 814 | /// Copies the node cross references (reverse references) into |
---|
| 815 | /// the given map. |
---|
[2286] | 816 | template <typename NodeCrossRef> |
---|
| 817 | GraphCopy& nodeCrossRef(NodeCrossRef& map) { |
---|
| 818 | nodeMapCopies.push_back(new _graph_utils_bits::CrossRefCopy<Source, Node, |
---|
| 819 | NodeRefMap, NodeCrossRef>(map)); |
---|
[1531] | 820 | return *this; |
---|
| 821 | } |
---|
| 822 | |
---|
| 823 | /// \brief Make copy of the given map. |
---|
| 824 | /// |
---|
| 825 | /// Makes copy of the given map for the newly created graph. |
---|
| 826 | /// The new map's key type is the target graph's node type, |
---|
| 827 | /// and the copied map's key type is the source graph's node |
---|
| 828 | /// type. |
---|
| 829 | template <typename TargetMap, typename SourceMap> |
---|
[2286] | 830 | GraphCopy& nodeMap(TargetMap& tmap, const SourceMap& map) { |
---|
| 831 | nodeMapCopies.push_back(new _graph_utils_bits::MapCopy<Source, Node, |
---|
| 832 | NodeRefMap, TargetMap, SourceMap>(tmap, map)); |
---|
| 833 | return *this; |
---|
| 834 | } |
---|
| 835 | |
---|
[2290] | 836 | /// \brief Make a copy of the given node. |
---|
| 837 | /// |
---|
| 838 | /// Make a copy of the given node. |
---|
| 839 | GraphCopy& node(TNode& tnode, const Node& node) { |
---|
| 840 | nodeMapCopies.push_back(new _graph_utils_bits::ItemCopy<Source, Node, |
---|
| 841 | NodeRefMap, TNode>(tnode, node)); |
---|
| 842 | return *this; |
---|
| 843 | } |
---|
| 844 | |
---|
[2286] | 845 | /// \brief Copies the edge references into the given map. |
---|
| 846 | /// |
---|
| 847 | /// Copies the edge references into the given map. |
---|
| 848 | template <typename EdgeRef> |
---|
| 849 | GraphCopy& edgeRef(EdgeRef& map) { |
---|
| 850 | edgeMapCopies.push_back(new _graph_utils_bits::RefCopy<Source, Edge, |
---|
| 851 | EdgeRefMap, EdgeRef>(map)); |
---|
| 852 | return *this; |
---|
| 853 | } |
---|
| 854 | |
---|
[2290] | 855 | /// \brief Copies the edge cross references into the given map. |
---|
[2286] | 856 | /// |
---|
[2290] | 857 | /// Copies the edge cross references (reverse references) into |
---|
| 858 | /// the given map. |
---|
[2286] | 859 | template <typename EdgeCrossRef> |
---|
| 860 | GraphCopy& edgeCrossRef(EdgeCrossRef& map) { |
---|
| 861 | edgeMapCopies.push_back(new _graph_utils_bits::CrossRefCopy<Source, Edge, |
---|
| 862 | EdgeRefMap, EdgeCrossRef>(map)); |
---|
[1531] | 863 | return *this; |
---|
| 864 | } |
---|
| 865 | |
---|
| 866 | /// \brief Make copy of the given map. |
---|
| 867 | /// |
---|
| 868 | /// Makes copy of the given map for the newly created graph. |
---|
| 869 | /// The new map's key type is the target graph's edge type, |
---|
| 870 | /// and the copied map's key type is the source graph's edge |
---|
| 871 | /// type. |
---|
| 872 | template <typename TargetMap, typename SourceMap> |
---|
[2286] | 873 | GraphCopy& edgeMap(TargetMap& tmap, const SourceMap& map) { |
---|
| 874 | edgeMapCopies.push_back(new _graph_utils_bits::MapCopy<Source, Edge, |
---|
| 875 | EdgeRefMap, TargetMap, SourceMap>(tmap, map)); |
---|
[1531] | 876 | return *this; |
---|
| 877 | } |
---|
| 878 | |
---|
[2290] | 879 | /// \brief Make a copy of the given edge. |
---|
| 880 | /// |
---|
| 881 | /// Make a copy of the given edge. |
---|
| 882 | GraphCopy& edge(TEdge& tedge, const Edge& edge) { |
---|
| 883 | edgeMapCopies.push_back(new _graph_utils_bits::ItemCopy<Source, Edge, |
---|
| 884 | EdgeRefMap, TEdge>(tedge, edge)); |
---|
| 885 | return *this; |
---|
| 886 | } |
---|
| 887 | |
---|
[2286] | 888 | /// \brief Executes the copies. |
---|
[1531] | 889 | /// |
---|
[2286] | 890 | /// Executes the copies. |
---|
| 891 | void run() { |
---|
| 892 | NodeRefMap nodeRefMap(source); |
---|
[2290] | 893 | EdgeRefMap edgeRefMap(source); |
---|
| 894 | _graph_utils_bits::GraphCopySelector<Target>:: |
---|
| 895 | copy(target, source, nodeRefMap, edgeRefMap); |
---|
[2286] | 896 | for (int i = 0; i < (int)nodeMapCopies.size(); ++i) { |
---|
| 897 | nodeMapCopies[i]->copy(source, nodeRefMap); |
---|
| 898 | } |
---|
| 899 | for (int i = 0; i < (int)edgeMapCopies.size(); ++i) { |
---|
| 900 | edgeMapCopies[i]->copy(source, edgeRefMap); |
---|
[2290] | 901 | } |
---|
[1531] | 902 | } |
---|
| 903 | |
---|
[2290] | 904 | protected: |
---|
| 905 | |
---|
| 906 | |
---|
[1531] | 907 | const Source& source; |
---|
| 908 | Target& target; |
---|
| 909 | |
---|
[2286] | 910 | std::vector<_graph_utils_bits::MapCopyBase<Source, Node, NodeRefMap>* > |
---|
| 911 | nodeMapCopies; |
---|
| 912 | |
---|
| 913 | std::vector<_graph_utils_bits::MapCopyBase<Source, Edge, EdgeRefMap>* > |
---|
| 914 | edgeMapCopies; |
---|
| 915 | |
---|
[1267] | 916 | }; |
---|
[946] | 917 | |
---|
[2006] | 918 | /// \brief Copy a graph to another graph. |
---|
[1531] | 919 | /// |
---|
[2006] | 920 | /// Copy a graph to another graph. |
---|
[1531] | 921 | /// The usage of the function: |
---|
| 922 | /// |
---|
[1946] | 923 | ///\code |
---|
[2286] | 924 | /// copyGraph(trg, src).nodeRef(nr).edgeCrossRef(ecr).run(); |
---|
[1946] | 925 | ///\endcode |
---|
[1531] | 926 | /// |
---|
| 927 | /// After the copy the \c nr map will contain the mapping from the |
---|
| 928 | /// source graph's nodes to the target graph's nodes and the \c ecr will |
---|
[1540] | 929 | /// contain the mapping from the target graph's edges to the source's |
---|
[1531] | 930 | /// edges. |
---|
[2290] | 931 | /// |
---|
| 932 | /// \see GraphCopy |
---|
[1531] | 933 | template <typename Target, typename Source> |
---|
| 934 | GraphCopy<Target, Source> copyGraph(Target& target, const Source& source) { |
---|
| 935 | return GraphCopy<Target, Source>(target, source); |
---|
| 936 | } |
---|
[946] | 937 | |
---|
[1720] | 938 | /// \brief Class to copy an undirected graph. |
---|
| 939 | /// |
---|
[2006] | 940 | /// Class to copy an undirected graph to another graph (duplicate a graph). |
---|
[1909] | 941 | /// The simplest way of using it is through the \c copyUGraph() function. |
---|
[1720] | 942 | template <typename Target, typename Source> |
---|
[1909] | 943 | class UGraphCopy { |
---|
[2286] | 944 | private: |
---|
| 945 | |
---|
[1720] | 946 | typedef typename Source::Node Node; |
---|
| 947 | typedef typename Source::NodeIt NodeIt; |
---|
| 948 | typedef typename Source::Edge Edge; |
---|
| 949 | typedef typename Source::EdgeIt EdgeIt; |
---|
[1909] | 950 | typedef typename Source::UEdge UEdge; |
---|
| 951 | typedef typename Source::UEdgeIt UEdgeIt; |
---|
[1720] | 952 | |
---|
[2286] | 953 | typedef typename Target::Node TNode; |
---|
| 954 | typedef typename Target::Edge TEdge; |
---|
| 955 | typedef typename Target::UEdge TUEdge; |
---|
[1720] | 956 | |
---|
[2286] | 957 | typedef typename Source::template NodeMap<TNode> NodeRefMap; |
---|
| 958 | typedef typename Source::template UEdgeMap<TUEdge> UEdgeRefMap; |
---|
[1720] | 959 | |
---|
| 960 | struct EdgeRefMap { |
---|
[2286] | 961 | EdgeRefMap(const Target& _target, const Source& _source, |
---|
| 962 | const UEdgeRefMap& _uedge_ref, const NodeRefMap& _node_ref) |
---|
| 963 | : target(_target), source(_source), |
---|
| 964 | uedge_ref(_uedge_ref), node_ref(_node_ref) {} |
---|
| 965 | |
---|
[1720] | 966 | typedef typename Source::Edge Key; |
---|
| 967 | typedef typename Target::Edge Value; |
---|
| 968 | |
---|
[2286] | 969 | Value operator[](const Key& key) const { |
---|
| 970 | bool forward = (source.direction(key) == |
---|
| 971 | (node_ref[source.source((UEdge)key)] == |
---|
| 972 | target.source(uedge_ref[(UEdge)key]))); |
---|
| 973 | return target.direct(uedge_ref[key], forward); |
---|
[1720] | 974 | } |
---|
| 975 | |
---|
[2286] | 976 | const Target& target; |
---|
| 977 | const Source& source; |
---|
| 978 | const UEdgeRefMap& uedge_ref; |
---|
| 979 | const NodeRefMap& node_ref; |
---|
[1720] | 980 | }; |
---|
[2286] | 981 | |
---|
[1720] | 982 | |
---|
[2286] | 983 | public: |
---|
[1720] | 984 | |
---|
[2286] | 985 | |
---|
| 986 | /// \brief Constructor for the GraphCopy. |
---|
[1720] | 987 | /// |
---|
| 988 | /// It copies the content of the \c _source graph into the |
---|
[2286] | 989 | /// \c _target graph. |
---|
[1909] | 990 | UGraphCopy(Target& _target, const Source& _source) |
---|
[2286] | 991 | : source(_source), target(_target) {} |
---|
| 992 | |
---|
| 993 | /// \brief Destructor of the GraphCopy |
---|
| 994 | /// |
---|
| 995 | /// Destructor of the GraphCopy |
---|
| 996 | ~UGraphCopy() { |
---|
| 997 | for (int i = 0; i < (int)nodeMapCopies.size(); ++i) { |
---|
| 998 | delete nodeMapCopies[i]; |
---|
[1720] | 999 | } |
---|
[2286] | 1000 | for (int i = 0; i < (int)edgeMapCopies.size(); ++i) { |
---|
| 1001 | delete edgeMapCopies[i]; |
---|
[1720] | 1002 | } |
---|
[2286] | 1003 | for (int i = 0; i < (int)uEdgeMapCopies.size(); ++i) { |
---|
| 1004 | delete uEdgeMapCopies[i]; |
---|
| 1005 | } |
---|
| 1006 | |
---|
[1720] | 1007 | } |
---|
| 1008 | |
---|
| 1009 | /// \brief Copies the node references into the given map. |
---|
| 1010 | /// |
---|
| 1011 | /// Copies the node references into the given map. |
---|
| 1012 | template <typename NodeRef> |
---|
[2286] | 1013 | UGraphCopy& nodeRef(NodeRef& map) { |
---|
| 1014 | nodeMapCopies.push_back(new _graph_utils_bits::RefCopy<Source, Node, |
---|
| 1015 | NodeRefMap, NodeRef>(map)); |
---|
[1720] | 1016 | return *this; |
---|
| 1017 | } |
---|
| 1018 | |
---|
[2290] | 1019 | /// \brief Copies the node cross references into the given map. |
---|
[1720] | 1020 | /// |
---|
[2290] | 1021 | /// Copies the node cross references (reverse references) into |
---|
| 1022 | /// the given map. |
---|
[2286] | 1023 | template <typename NodeCrossRef> |
---|
| 1024 | UGraphCopy& nodeCrossRef(NodeCrossRef& map) { |
---|
| 1025 | nodeMapCopies.push_back(new _graph_utils_bits::CrossRefCopy<Source, Node, |
---|
| 1026 | NodeRefMap, NodeCrossRef>(map)); |
---|
[1720] | 1027 | return *this; |
---|
| 1028 | } |
---|
| 1029 | |
---|
| 1030 | /// \brief Make copy of the given map. |
---|
| 1031 | /// |
---|
| 1032 | /// Makes copy of the given map for the newly created graph. |
---|
| 1033 | /// The new map's key type is the target graph's node type, |
---|
| 1034 | /// and the copied map's key type is the source graph's node |
---|
| 1035 | /// type. |
---|
| 1036 | template <typename TargetMap, typename SourceMap> |
---|
[2286] | 1037 | UGraphCopy& nodeMap(TargetMap& tmap, const SourceMap& map) { |
---|
| 1038 | nodeMapCopies.push_back(new _graph_utils_bits::MapCopy<Source, Node, |
---|
| 1039 | NodeRefMap, TargetMap, SourceMap>(tmap, map)); |
---|
| 1040 | return *this; |
---|
| 1041 | } |
---|
| 1042 | |
---|
[2290] | 1043 | /// \brief Make a copy of the given node. |
---|
| 1044 | /// |
---|
| 1045 | /// Make a copy of the given node. |
---|
| 1046 | UGraphCopy& node(TNode& tnode, const Node& node) { |
---|
| 1047 | nodeMapCopies.push_back(new _graph_utils_bits::ItemCopy<Source, Node, |
---|
| 1048 | NodeRefMap, TNode>(tnode, node)); |
---|
| 1049 | return *this; |
---|
| 1050 | } |
---|
| 1051 | |
---|
[2286] | 1052 | /// \brief Copies the edge references into the given map. |
---|
| 1053 | /// |
---|
| 1054 | /// Copies the edge references into the given map. |
---|
| 1055 | template <typename EdgeRef> |
---|
| 1056 | UGraphCopy& edgeRef(EdgeRef& map) { |
---|
| 1057 | edgeMapCopies.push_back(new _graph_utils_bits::RefCopy<Source, Edge, |
---|
| 1058 | EdgeRefMap, EdgeRef>(map)); |
---|
| 1059 | return *this; |
---|
| 1060 | } |
---|
| 1061 | |
---|
[2290] | 1062 | /// \brief Copies the edge cross references into the given map. |
---|
[2286] | 1063 | /// |
---|
[2290] | 1064 | /// Copies the edge cross references (reverse references) into |
---|
| 1065 | /// the given map. |
---|
[2286] | 1066 | template <typename EdgeCrossRef> |
---|
| 1067 | UGraphCopy& edgeCrossRef(EdgeCrossRef& map) { |
---|
| 1068 | edgeMapCopies.push_back(new _graph_utils_bits::CrossRefCopy<Source, Edge, |
---|
| 1069 | EdgeRefMap, EdgeCrossRef>(map)); |
---|
[1720] | 1070 | return *this; |
---|
| 1071 | } |
---|
| 1072 | |
---|
| 1073 | /// \brief Make copy of the given map. |
---|
| 1074 | /// |
---|
| 1075 | /// Makes copy of the given map for the newly created graph. |
---|
| 1076 | /// The new map's key type is the target graph's edge type, |
---|
| 1077 | /// and the copied map's key type is the source graph's edge |
---|
| 1078 | /// type. |
---|
| 1079 | template <typename TargetMap, typename SourceMap> |
---|
[2286] | 1080 | UGraphCopy& edgeMap(TargetMap& tmap, const SourceMap& map) { |
---|
| 1081 | edgeMapCopies.push_back(new _graph_utils_bits::MapCopy<Source, Edge, |
---|
| 1082 | EdgeRefMap, TargetMap, SourceMap>(tmap, map)); |
---|
| 1083 | return *this; |
---|
| 1084 | } |
---|
| 1085 | |
---|
[2290] | 1086 | /// \brief Make a copy of the given edge. |
---|
[2286] | 1087 | /// |
---|
[2290] | 1088 | /// Make a copy of the given edge. |
---|
| 1089 | UGraphCopy& edge(TEdge& tedge, const Edge& edge) { |
---|
| 1090 | edgeMapCopies.push_back(new _graph_utils_bits::ItemCopy<Source, Edge, |
---|
| 1091 | EdgeRefMap, TEdge>(tedge, edge)); |
---|
| 1092 | return *this; |
---|
| 1093 | } |
---|
| 1094 | |
---|
| 1095 | /// \brief Copies the undirected edge references into the given map. |
---|
| 1096 | /// |
---|
| 1097 | /// Copies the undirected edge references into the given map. |
---|
[2286] | 1098 | template <typename UEdgeRef> |
---|
| 1099 | UGraphCopy& uEdgeRef(UEdgeRef& map) { |
---|
| 1100 | uEdgeMapCopies.push_back(new _graph_utils_bits::RefCopy<Source, UEdge, |
---|
| 1101 | UEdgeRefMap, UEdgeRef>(map)); |
---|
| 1102 | return *this; |
---|
| 1103 | } |
---|
| 1104 | |
---|
[2290] | 1105 | /// \brief Copies the undirected edge cross references into the given map. |
---|
[2286] | 1106 | /// |
---|
[2290] | 1107 | /// Copies the undirected edge cross references (reverse |
---|
| 1108 | /// references) into the given map. |
---|
[2286] | 1109 | template <typename UEdgeCrossRef> |
---|
| 1110 | UGraphCopy& uEdgeCrossRef(UEdgeCrossRef& map) { |
---|
| 1111 | uEdgeMapCopies.push_back(new _graph_utils_bits::CrossRefCopy<Source, |
---|
| 1112 | UEdge, UEdgeRefMap, UEdgeCrossRef>(map)); |
---|
[1720] | 1113 | return *this; |
---|
| 1114 | } |
---|
| 1115 | |
---|
| 1116 | /// \brief Make copy of the given map. |
---|
| 1117 | /// |
---|
| 1118 | /// Makes copy of the given map for the newly created graph. |
---|
[2290] | 1119 | /// The new map's key type is the target graph's undirected edge type, |
---|
| 1120 | /// and the copied map's key type is the source graph's undirected edge |
---|
[1720] | 1121 | /// type. |
---|
| 1122 | template <typename TargetMap, typename SourceMap> |
---|
[2286] | 1123 | UGraphCopy& uEdgeMap(TargetMap& tmap, const SourceMap& map) { |
---|
| 1124 | uEdgeMapCopies.push_back(new _graph_utils_bits::MapCopy<Source, UEdge, |
---|
| 1125 | UEdgeRefMap, TargetMap, SourceMap>(tmap, map)); |
---|
[1720] | 1126 | return *this; |
---|
| 1127 | } |
---|
| 1128 | |
---|
[2290] | 1129 | /// \brief Make a copy of the given undirected edge. |
---|
| 1130 | /// |
---|
| 1131 | /// Make a copy of the given undirected edge. |
---|
| 1132 | UGraphCopy& uEdge(TUEdge& tuedge, const UEdge& uedge) { |
---|
| 1133 | uEdgeMapCopies.push_back(new _graph_utils_bits::ItemCopy<Source, UEdge, |
---|
| 1134 | UEdgeRefMap, TUEdge>(tuedge, uedge)); |
---|
| 1135 | return *this; |
---|
| 1136 | } |
---|
| 1137 | |
---|
[2286] | 1138 | /// \brief Executes the copies. |
---|
[1720] | 1139 | /// |
---|
[2286] | 1140 | /// Executes the copies. |
---|
| 1141 | void run() { |
---|
| 1142 | NodeRefMap nodeRefMap(source); |
---|
[2290] | 1143 | UEdgeRefMap uEdgeRefMap(source); |
---|
| 1144 | EdgeRefMap edgeRefMap(target, source, uEdgeRefMap, nodeRefMap); |
---|
| 1145 | _graph_utils_bits::UGraphCopySelector<Target>:: |
---|
| 1146 | copy(target, source, nodeRefMap, uEdgeRefMap); |
---|
[2286] | 1147 | for (int i = 0; i < (int)nodeMapCopies.size(); ++i) { |
---|
| 1148 | nodeMapCopies[i]->copy(source, nodeRefMap); |
---|
| 1149 | } |
---|
| 1150 | for (int i = 0; i < (int)uEdgeMapCopies.size(); ++i) { |
---|
| 1151 | uEdgeMapCopies[i]->copy(source, uEdgeRefMap); |
---|
| 1152 | } |
---|
| 1153 | for (int i = 0; i < (int)edgeMapCopies.size(); ++i) { |
---|
| 1154 | edgeMapCopies[i]->copy(source, edgeRefMap); |
---|
| 1155 | } |
---|
[1720] | 1156 | } |
---|
| 1157 | |
---|
| 1158 | private: |
---|
[1192] | 1159 | |
---|
[1720] | 1160 | const Source& source; |
---|
| 1161 | Target& target; |
---|
[947] | 1162 | |
---|
[2286] | 1163 | std::vector<_graph_utils_bits::MapCopyBase<Source, Node, NodeRefMap>* > |
---|
| 1164 | nodeMapCopies; |
---|
| 1165 | |
---|
| 1166 | std::vector<_graph_utils_bits::MapCopyBase<Source, Edge, EdgeRefMap>* > |
---|
| 1167 | edgeMapCopies; |
---|
| 1168 | |
---|
| 1169 | std::vector<_graph_utils_bits::MapCopyBase<Source, UEdge, UEdgeRefMap>* > |
---|
| 1170 | uEdgeMapCopies; |
---|
| 1171 | |
---|
[1192] | 1172 | }; |
---|
| 1173 | |
---|
[2290] | 1174 | /// \brief Copy an undirected graph to another graph. |
---|
[1720] | 1175 | /// |
---|
[2290] | 1176 | /// Copy an undirected graph to another graph. |
---|
[1720] | 1177 | /// The usage of the function: |
---|
| 1178 | /// |
---|
[1946] | 1179 | ///\code |
---|
[2286] | 1180 | /// copyUGraph(trg, src).nodeRef(nr).edgeCrossRef(ecr).run(); |
---|
[1946] | 1181 | ///\endcode |
---|
[1720] | 1182 | /// |
---|
| 1183 | /// After the copy the \c nr map will contain the mapping from the |
---|
| 1184 | /// source graph's nodes to the target graph's nodes and the \c ecr will |
---|
| 1185 | /// contain the mapping from the target graph's edges to the source's |
---|
| 1186 | /// edges. |
---|
[2290] | 1187 | /// |
---|
| 1188 | /// \see UGraphCopy |
---|
[1720] | 1189 | template <typename Target, typename Source> |
---|
[1909] | 1190 | UGraphCopy<Target, Source> |
---|
| 1191 | copyUGraph(Target& target, const Source& source) { |
---|
| 1192 | return UGraphCopy<Target, Source>(target, source); |
---|
[1720] | 1193 | } |
---|
[1192] | 1194 | |
---|
[2290] | 1195 | /// \brief Class to copy a bipartite undirected graph. |
---|
| 1196 | /// |
---|
| 1197 | /// Class to copy a bipartite undirected graph to another graph |
---|
| 1198 | /// (duplicate a graph). The simplest way of using it is through |
---|
| 1199 | /// the \c copyBpUGraph() function. |
---|
| 1200 | template <typename Target, typename Source> |
---|
| 1201 | class BpUGraphCopy { |
---|
| 1202 | private: |
---|
| 1203 | |
---|
| 1204 | typedef typename Source::Node Node; |
---|
| 1205 | typedef typename Source::ANode ANode; |
---|
| 1206 | typedef typename Source::BNode BNode; |
---|
| 1207 | typedef typename Source::NodeIt NodeIt; |
---|
| 1208 | typedef typename Source::Edge Edge; |
---|
| 1209 | typedef typename Source::EdgeIt EdgeIt; |
---|
| 1210 | typedef typename Source::UEdge UEdge; |
---|
| 1211 | typedef typename Source::UEdgeIt UEdgeIt; |
---|
| 1212 | |
---|
| 1213 | typedef typename Target::Node TNode; |
---|
| 1214 | typedef typename Target::Edge TEdge; |
---|
| 1215 | typedef typename Target::UEdge TUEdge; |
---|
| 1216 | |
---|
| 1217 | typedef typename Source::template ANodeMap<TNode> ANodeRefMap; |
---|
| 1218 | typedef typename Source::template BNodeMap<TNode> BNodeRefMap; |
---|
| 1219 | typedef typename Source::template UEdgeMap<TUEdge> UEdgeRefMap; |
---|
| 1220 | |
---|
| 1221 | struct NodeRefMap { |
---|
| 1222 | NodeRefMap(const Source& _source, const ANodeRefMap& _anode_ref, |
---|
| 1223 | const BNodeRefMap& _bnode_ref) |
---|
| 1224 | : source(_source), anode_ref(_anode_ref), bnode_ref(_bnode_ref) {} |
---|
| 1225 | |
---|
| 1226 | typedef typename Source::Node Key; |
---|
| 1227 | typedef typename Target::Node Value; |
---|
| 1228 | |
---|
| 1229 | Value operator[](const Key& key) const { |
---|
| 1230 | return source.aNode(key) ? anode_ref[key] : bnode_ref[key]; |
---|
| 1231 | } |
---|
| 1232 | |
---|
| 1233 | const Source& source; |
---|
| 1234 | const ANodeRefMap& anode_ref; |
---|
| 1235 | const BNodeRefMap& bnode_ref; |
---|
| 1236 | }; |
---|
| 1237 | |
---|
| 1238 | struct EdgeRefMap { |
---|
| 1239 | EdgeRefMap(const Target& _target, const Source& _source, |
---|
| 1240 | const UEdgeRefMap& _uedge_ref, const NodeRefMap& _node_ref) |
---|
| 1241 | : target(_target), source(_source), |
---|
| 1242 | uedge_ref(_uedge_ref), node_ref(_node_ref) {} |
---|
| 1243 | |
---|
| 1244 | typedef typename Source::Edge Key; |
---|
| 1245 | typedef typename Target::Edge Value; |
---|
| 1246 | |
---|
| 1247 | Value operator[](const Key& key) const { |
---|
| 1248 | bool forward = (source.direction(key) == |
---|
| 1249 | (node_ref[source.source((UEdge)key)] == |
---|
| 1250 | target.source(uedge_ref[(UEdge)key]))); |
---|
| 1251 | return target.direct(uedge_ref[key], forward); |
---|
| 1252 | } |
---|
| 1253 | |
---|
| 1254 | const Target& target; |
---|
| 1255 | const Source& source; |
---|
| 1256 | const UEdgeRefMap& uedge_ref; |
---|
| 1257 | const NodeRefMap& node_ref; |
---|
| 1258 | }; |
---|
| 1259 | |
---|
| 1260 | public: |
---|
| 1261 | |
---|
| 1262 | |
---|
| 1263 | /// \brief Constructor for the GraphCopy. |
---|
| 1264 | /// |
---|
| 1265 | /// It copies the content of the \c _source graph into the |
---|
| 1266 | /// \c _target graph. |
---|
| 1267 | BpUGraphCopy(Target& _target, const Source& _source) |
---|
| 1268 | : source(_source), target(_target) {} |
---|
| 1269 | |
---|
| 1270 | /// \brief Destructor of the GraphCopy |
---|
| 1271 | /// |
---|
| 1272 | /// Destructor of the GraphCopy |
---|
| 1273 | ~BpUGraphCopy() { |
---|
| 1274 | for (int i = 0; i < (int)aNodeMapCopies.size(); ++i) { |
---|
| 1275 | delete aNodeMapCopies[i]; |
---|
| 1276 | } |
---|
| 1277 | for (int i = 0; i < (int)bNodeMapCopies.size(); ++i) { |
---|
| 1278 | delete bNodeMapCopies[i]; |
---|
| 1279 | } |
---|
| 1280 | for (int i = 0; i < (int)nodeMapCopies.size(); ++i) { |
---|
| 1281 | delete nodeMapCopies[i]; |
---|
| 1282 | } |
---|
| 1283 | for (int i = 0; i < (int)edgeMapCopies.size(); ++i) { |
---|
| 1284 | delete edgeMapCopies[i]; |
---|
| 1285 | } |
---|
| 1286 | for (int i = 0; i < (int)uEdgeMapCopies.size(); ++i) { |
---|
| 1287 | delete uEdgeMapCopies[i]; |
---|
| 1288 | } |
---|
| 1289 | |
---|
| 1290 | } |
---|
| 1291 | |
---|
| 1292 | /// \brief Copies the A-node references into the given map. |
---|
| 1293 | /// |
---|
| 1294 | /// Copies the A-node references into the given map. |
---|
| 1295 | template <typename ANodeRef> |
---|
| 1296 | BpUGraphCopy& aNodeRef(ANodeRef& map) { |
---|
| 1297 | aNodeMapCopies.push_back(new _graph_utils_bits::RefCopy<Source, ANode, |
---|
| 1298 | ANodeRefMap, ANodeRef>(map)); |
---|
| 1299 | return *this; |
---|
| 1300 | } |
---|
| 1301 | |
---|
| 1302 | /// \brief Copies the A-node cross references into the given map. |
---|
| 1303 | /// |
---|
| 1304 | /// Copies the A-node cross references (reverse references) into |
---|
| 1305 | /// the given map. |
---|
| 1306 | template <typename ANodeCrossRef> |
---|
| 1307 | BpUGraphCopy& aNodeCrossRef(ANodeCrossRef& map) { |
---|
| 1308 | aNodeMapCopies.push_back(new _graph_utils_bits::CrossRefCopy<Source, |
---|
| 1309 | ANode, ANodeRefMap, ANodeCrossRef>(map)); |
---|
| 1310 | return *this; |
---|
| 1311 | } |
---|
| 1312 | |
---|
| 1313 | /// \brief Make copy of the given A-node map. |
---|
| 1314 | /// |
---|
| 1315 | /// Makes copy of the given map for the newly created graph. |
---|
| 1316 | /// The new map's key type is the target graph's node type, |
---|
| 1317 | /// and the copied map's key type is the source graph's node |
---|
| 1318 | /// type. |
---|
| 1319 | template <typename TargetMap, typename SourceMap> |
---|
| 1320 | BpUGraphCopy& aNodeMap(TargetMap& tmap, const SourceMap& map) { |
---|
| 1321 | aNodeMapCopies.push_back(new _graph_utils_bits::MapCopy<Source, ANode, |
---|
| 1322 | ANodeRefMap, TargetMap, SourceMap>(tmap, map)); |
---|
| 1323 | return *this; |
---|
| 1324 | } |
---|
| 1325 | |
---|
| 1326 | /// \brief Copies the B-node references into the given map. |
---|
| 1327 | /// |
---|
| 1328 | /// Copies the B-node references into the given map. |
---|
| 1329 | template <typename BNodeRef> |
---|
| 1330 | BpUGraphCopy& bNodeRef(BNodeRef& map) { |
---|
| 1331 | bNodeMapCopies.push_back(new _graph_utils_bits::RefCopy<Source, BNode, |
---|
| 1332 | BNodeRefMap, BNodeRef>(map)); |
---|
| 1333 | return *this; |
---|
| 1334 | } |
---|
| 1335 | |
---|
| 1336 | /// \brief Copies the B-node cross references into the given map. |
---|
| 1337 | /// |
---|
| 1338 | /// Copies the B-node cross references (reverse references) into |
---|
| 1339 | /// the given map. |
---|
| 1340 | template <typename BNodeCrossRef> |
---|
| 1341 | BpUGraphCopy& bNodeCrossRef(BNodeCrossRef& map) { |
---|
| 1342 | bNodeMapCopies.push_back(new _graph_utils_bits::CrossRefCopy<Source, |
---|
| 1343 | BNode, BNodeRefMap, BNodeCrossRef>(map)); |
---|
| 1344 | return *this; |
---|
| 1345 | } |
---|
| 1346 | |
---|
| 1347 | /// \brief Make copy of the given B-node map. |
---|
| 1348 | /// |
---|
| 1349 | /// Makes copy of the given map for the newly created graph. |
---|
| 1350 | /// The new map's key type is the target graph's node type, |
---|
| 1351 | /// and the copied map's key type is the source graph's node |
---|
| 1352 | /// type. |
---|
| 1353 | template <typename TargetMap, typename SourceMap> |
---|
| 1354 | BpUGraphCopy& bNodeMap(TargetMap& tmap, const SourceMap& map) { |
---|
| 1355 | bNodeMapCopies.push_back(new _graph_utils_bits::MapCopy<Source, BNode, |
---|
| 1356 | BNodeRefMap, TargetMap, SourceMap>(tmap, map)); |
---|
| 1357 | return *this; |
---|
| 1358 | } |
---|
| 1359 | /// \brief Copies the node references into the given map. |
---|
| 1360 | /// |
---|
| 1361 | /// Copies the node references into the given map. |
---|
| 1362 | template <typename NodeRef> |
---|
| 1363 | BpUGraphCopy& nodeRef(NodeRef& map) { |
---|
| 1364 | nodeMapCopies.push_back(new _graph_utils_bits::RefCopy<Source, Node, |
---|
| 1365 | NodeRefMap, NodeRef>(map)); |
---|
| 1366 | return *this; |
---|
| 1367 | } |
---|
| 1368 | |
---|
| 1369 | /// \brief Copies the node cross references into the given map. |
---|
| 1370 | /// |
---|
| 1371 | /// Copies the node cross references (reverse references) into |
---|
| 1372 | /// the given map. |
---|
| 1373 | template <typename NodeCrossRef> |
---|
| 1374 | BpUGraphCopy& nodeCrossRef(NodeCrossRef& map) { |
---|
| 1375 | nodeMapCopies.push_back(new _graph_utils_bits::CrossRefCopy<Source, Node, |
---|
| 1376 | NodeRefMap, NodeCrossRef>(map)); |
---|
| 1377 | return *this; |
---|
| 1378 | } |
---|
| 1379 | |
---|
| 1380 | /// \brief Make copy of the given map. |
---|
| 1381 | /// |
---|
| 1382 | /// Makes copy of the given map for the newly created graph. |
---|
| 1383 | /// The new map's key type is the target graph's node type, |
---|
| 1384 | /// and the copied map's key type is the source graph's node |
---|
| 1385 | /// type. |
---|
| 1386 | template <typename TargetMap, typename SourceMap> |
---|
| 1387 | BpUGraphCopy& nodeMap(TargetMap& tmap, const SourceMap& map) { |
---|
| 1388 | nodeMapCopies.push_back(new _graph_utils_bits::MapCopy<Source, Node, |
---|
| 1389 | NodeRefMap, TargetMap, SourceMap>(tmap, map)); |
---|
| 1390 | return *this; |
---|
| 1391 | } |
---|
| 1392 | |
---|
| 1393 | /// \brief Make a copy of the given node. |
---|
| 1394 | /// |
---|
| 1395 | /// Make a copy of the given node. |
---|
| 1396 | BpUGraphCopy& node(TNode& tnode, const Node& node) { |
---|
| 1397 | nodeMapCopies.push_back(new _graph_utils_bits::ItemCopy<Source, Node, |
---|
| 1398 | NodeRefMap, TNode>(tnode, node)); |
---|
| 1399 | return *this; |
---|
| 1400 | } |
---|
| 1401 | |
---|
| 1402 | /// \brief Copies the edge references into the given map. |
---|
| 1403 | /// |
---|
| 1404 | /// Copies the edge references into the given map. |
---|
| 1405 | template <typename EdgeRef> |
---|
| 1406 | BpUGraphCopy& edgeRef(EdgeRef& map) { |
---|
| 1407 | edgeMapCopies.push_back(new _graph_utils_bits::RefCopy<Source, Edge, |
---|
| 1408 | EdgeRefMap, EdgeRef>(map)); |
---|
| 1409 | return *this; |
---|
| 1410 | } |
---|
| 1411 | |
---|
| 1412 | /// \brief Copies the edge cross references into the given map. |
---|
| 1413 | /// |
---|
| 1414 | /// Copies the edge cross references (reverse references) into |
---|
| 1415 | /// the given map. |
---|
| 1416 | template <typename EdgeCrossRef> |
---|
| 1417 | BpUGraphCopy& edgeCrossRef(EdgeCrossRef& map) { |
---|
| 1418 | edgeMapCopies.push_back(new _graph_utils_bits::CrossRefCopy<Source, Edge, |
---|
| 1419 | EdgeRefMap, EdgeCrossRef>(map)); |
---|
| 1420 | return *this; |
---|
| 1421 | } |
---|
| 1422 | |
---|
| 1423 | /// \brief Make copy of the given map. |
---|
| 1424 | /// |
---|
| 1425 | /// Makes copy of the given map for the newly created graph. |
---|
| 1426 | /// The new map's key type is the target graph's edge type, |
---|
| 1427 | /// and the copied map's key type is the source graph's edge |
---|
| 1428 | /// type. |
---|
| 1429 | template <typename TargetMap, typename SourceMap> |
---|
| 1430 | BpUGraphCopy& edgeMap(TargetMap& tmap, const SourceMap& map) { |
---|
| 1431 | edgeMapCopies.push_back(new _graph_utils_bits::MapCopy<Source, Edge, |
---|
| 1432 | EdgeRefMap, TargetMap, SourceMap>(tmap, map)); |
---|
| 1433 | return *this; |
---|
| 1434 | } |
---|
| 1435 | |
---|
| 1436 | /// \brief Make a copy of the given edge. |
---|
| 1437 | /// |
---|
| 1438 | /// Make a copy of the given edge. |
---|
| 1439 | BpUGraphCopy& edge(TEdge& tedge, const Edge& edge) { |
---|
| 1440 | edgeMapCopies.push_back(new _graph_utils_bits::ItemCopy<Source, Edge, |
---|
| 1441 | EdgeRefMap, TEdge>(tedge, edge)); |
---|
| 1442 | return *this; |
---|
| 1443 | } |
---|
| 1444 | |
---|
| 1445 | /// \brief Copies the undirected edge references into the given map. |
---|
| 1446 | /// |
---|
| 1447 | /// Copies the undirected edge references into the given map. |
---|
| 1448 | template <typename UEdgeRef> |
---|
| 1449 | BpUGraphCopy& uEdgeRef(UEdgeRef& map) { |
---|
| 1450 | uEdgeMapCopies.push_back(new _graph_utils_bits::RefCopy<Source, UEdge, |
---|
| 1451 | UEdgeRefMap, UEdgeRef>(map)); |
---|
| 1452 | return *this; |
---|
| 1453 | } |
---|
| 1454 | |
---|
| 1455 | /// \brief Copies the undirected edge cross references into the given map. |
---|
| 1456 | /// |
---|
| 1457 | /// Copies the undirected edge cross references (reverse |
---|
| 1458 | /// references) into the given map. |
---|
| 1459 | template <typename UEdgeCrossRef> |
---|
| 1460 | BpUGraphCopy& uEdgeCrossRef(UEdgeCrossRef& map) { |
---|
| 1461 | uEdgeMapCopies.push_back(new _graph_utils_bits::CrossRefCopy<Source, |
---|
| 1462 | UEdge, UEdgeRefMap, UEdgeCrossRef>(map)); |
---|
| 1463 | return *this; |
---|
| 1464 | } |
---|
| 1465 | |
---|
| 1466 | /// \brief Make copy of the given map. |
---|
| 1467 | /// |
---|
| 1468 | /// Makes copy of the given map for the newly created graph. |
---|
| 1469 | /// The new map's key type is the target graph's undirected edge type, |
---|
| 1470 | /// and the copied map's key type is the source graph's undirected edge |
---|
| 1471 | /// type. |
---|
| 1472 | template <typename TargetMap, typename SourceMap> |
---|
| 1473 | BpUGraphCopy& uEdgeMap(TargetMap& tmap, const SourceMap& map) { |
---|
| 1474 | uEdgeMapCopies.push_back(new _graph_utils_bits::MapCopy<Source, UEdge, |
---|
| 1475 | UEdgeRefMap, TargetMap, SourceMap>(tmap, map)); |
---|
| 1476 | return *this; |
---|
| 1477 | } |
---|
| 1478 | |
---|
| 1479 | /// \brief Make a copy of the given undirected edge. |
---|
| 1480 | /// |
---|
| 1481 | /// Make a copy of the given undirected edge. |
---|
| 1482 | BpUGraphCopy& uEdge(TUEdge& tuedge, const UEdge& uedge) { |
---|
| 1483 | uEdgeMapCopies.push_back(new _graph_utils_bits::ItemCopy<Source, UEdge, |
---|
| 1484 | UEdgeRefMap, TUEdge>(tuedge, uedge)); |
---|
| 1485 | return *this; |
---|
| 1486 | } |
---|
| 1487 | |
---|
| 1488 | /// \brief Executes the copies. |
---|
| 1489 | /// |
---|
| 1490 | /// Executes the copies. |
---|
| 1491 | void run() { |
---|
| 1492 | ANodeRefMap aNodeRefMap(source); |
---|
| 1493 | BNodeRefMap bNodeRefMap(source); |
---|
| 1494 | NodeRefMap nodeRefMap(source, aNodeRefMap, bNodeRefMap); |
---|
| 1495 | UEdgeRefMap uEdgeRefMap(source); |
---|
| 1496 | EdgeRefMap edgeRefMap(target, source, uEdgeRefMap, nodeRefMap); |
---|
| 1497 | _graph_utils_bits::BpUGraphCopySelector<Target>:: |
---|
| 1498 | copy(target, source, aNodeRefMap, bNodeRefMap, uEdgeRefMap); |
---|
| 1499 | for (int i = 0; i < (int)aNodeMapCopies.size(); ++i) { |
---|
| 1500 | aNodeMapCopies[i]->copy(source, aNodeRefMap); |
---|
| 1501 | } |
---|
| 1502 | for (int i = 0; i < (int)bNodeMapCopies.size(); ++i) { |
---|
| 1503 | bNodeMapCopies[i]->copy(source, bNodeRefMap); |
---|
| 1504 | } |
---|
| 1505 | for (int i = 0; i < (int)nodeMapCopies.size(); ++i) { |
---|
| 1506 | nodeMapCopies[i]->copy(source, nodeRefMap); |
---|
| 1507 | } |
---|
| 1508 | for (int i = 0; i < (int)uEdgeMapCopies.size(); ++i) { |
---|
| 1509 | uEdgeMapCopies[i]->copy(source, uEdgeRefMap); |
---|
| 1510 | } |
---|
| 1511 | for (int i = 0; i < (int)edgeMapCopies.size(); ++i) { |
---|
| 1512 | edgeMapCopies[i]->copy(source, edgeRefMap); |
---|
| 1513 | } |
---|
| 1514 | } |
---|
| 1515 | |
---|
| 1516 | private: |
---|
| 1517 | |
---|
| 1518 | const Source& source; |
---|
| 1519 | Target& target; |
---|
| 1520 | |
---|
| 1521 | std::vector<_graph_utils_bits::MapCopyBase<Source, ANode, ANodeRefMap>* > |
---|
| 1522 | aNodeMapCopies; |
---|
| 1523 | |
---|
| 1524 | std::vector<_graph_utils_bits::MapCopyBase<Source, BNode, BNodeRefMap>* > |
---|
| 1525 | bNodeMapCopies; |
---|
| 1526 | |
---|
| 1527 | std::vector<_graph_utils_bits::MapCopyBase<Source, Node, NodeRefMap>* > |
---|
| 1528 | nodeMapCopies; |
---|
| 1529 | |
---|
| 1530 | std::vector<_graph_utils_bits::MapCopyBase<Source, Edge, EdgeRefMap>* > |
---|
| 1531 | edgeMapCopies; |
---|
| 1532 | |
---|
| 1533 | std::vector<_graph_utils_bits::MapCopyBase<Source, UEdge, UEdgeRefMap>* > |
---|
| 1534 | uEdgeMapCopies; |
---|
| 1535 | |
---|
| 1536 | }; |
---|
| 1537 | |
---|
| 1538 | /// \brief Copy a bipartite undirected graph to another graph. |
---|
| 1539 | /// |
---|
| 1540 | /// Copy a bipartite undirected graph to another graph. |
---|
| 1541 | /// The usage of the function: |
---|
| 1542 | /// |
---|
| 1543 | ///\code |
---|
| 1544 | /// copyBpUGraph(trg, src).aNodeRef(anr).edgeCrossRef(ecr).run(); |
---|
| 1545 | ///\endcode |
---|
| 1546 | /// |
---|
| 1547 | /// After the copy the \c nr map will contain the mapping from the |
---|
| 1548 | /// source graph's nodes to the target graph's nodes and the \c ecr will |
---|
| 1549 | /// contain the mapping from the target graph's edges to the source's |
---|
| 1550 | /// edges. |
---|
| 1551 | /// |
---|
| 1552 | /// \see BpUGraphCopy |
---|
| 1553 | template <typename Target, typename Source> |
---|
| 1554 | BpUGraphCopy<Target, Source> |
---|
| 1555 | copyBpUGraph(Target& target, const Source& source) { |
---|
| 1556 | return BpUGraphCopy<Target, Source>(target, source); |
---|
| 1557 | } |
---|
| 1558 | |
---|
[1192] | 1559 | |
---|
| 1560 | /// @} |
---|
[1402] | 1561 | |
---|
| 1562 | /// \addtogroup graph_maps |
---|
| 1563 | /// @{ |
---|
| 1564 | |
---|
[1413] | 1565 | /// Provides an immutable and unique id for each item in the graph. |
---|
| 1566 | |
---|
[1540] | 1567 | /// The IdMap class provides a unique and immutable id for each item of the |
---|
| 1568 | /// same type (e.g. node) in the graph. This id is <ul><li>\b unique: |
---|
| 1569 | /// different items (nodes) get different ids <li>\b immutable: the id of an |
---|
| 1570 | /// item (node) does not change (even if you delete other nodes). </ul> |
---|
| 1571 | /// Through this map you get access (i.e. can read) the inner id values of |
---|
| 1572 | /// the items stored in the graph. This map can be inverted with its member |
---|
| 1573 | /// class \c InverseMap. |
---|
[1413] | 1574 | /// |
---|
| 1575 | template <typename _Graph, typename _Item> |
---|
| 1576 | class IdMap { |
---|
| 1577 | public: |
---|
| 1578 | typedef _Graph Graph; |
---|
| 1579 | typedef int Value; |
---|
| 1580 | typedef _Item Item; |
---|
| 1581 | typedef _Item Key; |
---|
| 1582 | |
---|
| 1583 | /// \brief Constructor. |
---|
| 1584 | /// |
---|
| 1585 | /// Constructor for creating id map. |
---|
[2286] | 1586 | explicit IdMap(const Graph& _graph) : graph(&_graph) {} |
---|
[1413] | 1587 | |
---|
| 1588 | /// \brief Gives back the \e id of the item. |
---|
| 1589 | /// |
---|
| 1590 | /// Gives back the immutable and unique \e id of the map. |
---|
| 1591 | int operator[](const Item& item) const { return graph->id(item);} |
---|
| 1592 | |
---|
| 1593 | |
---|
| 1594 | private: |
---|
| 1595 | const Graph* graph; |
---|
| 1596 | |
---|
| 1597 | public: |
---|
| 1598 | |
---|
[1540] | 1599 | /// \brief The class represents the inverse of its owner (IdMap). |
---|
[1413] | 1600 | /// |
---|
[1540] | 1601 | /// The class represents the inverse of its owner (IdMap). |
---|
[1413] | 1602 | /// \see inverse() |
---|
| 1603 | class InverseMap { |
---|
| 1604 | public: |
---|
[1419] | 1605 | |
---|
[1413] | 1606 | /// \brief Constructor. |
---|
| 1607 | /// |
---|
| 1608 | /// Constructor for creating an id-to-item map. |
---|
[2286] | 1609 | explicit InverseMap(const Graph& _graph) : graph(&_graph) {} |
---|
[1413] | 1610 | |
---|
| 1611 | /// \brief Constructor. |
---|
| 1612 | /// |
---|
| 1613 | /// Constructor for creating an id-to-item map. |
---|
[2286] | 1614 | explicit InverseMap(const IdMap& idMap) : graph(idMap.graph) {} |
---|
[1413] | 1615 | |
---|
| 1616 | /// \brief Gives back the given item from its id. |
---|
| 1617 | /// |
---|
| 1618 | /// Gives back the given item from its id. |
---|
| 1619 | /// |
---|
| 1620 | Item operator[](int id) const { return graph->fromId(id, Item());} |
---|
| 1621 | private: |
---|
| 1622 | const Graph* graph; |
---|
| 1623 | }; |
---|
| 1624 | |
---|
| 1625 | /// \brief Gives back the inverse of the map. |
---|
| 1626 | /// |
---|
[1540] | 1627 | /// Gives back the inverse of the IdMap. |
---|
[1413] | 1628 | InverseMap inverse() const { return InverseMap(*graph);} |
---|
| 1629 | |
---|
| 1630 | }; |
---|
| 1631 | |
---|
| 1632 | |
---|
[1526] | 1633 | /// \brief General invertable graph-map type. |
---|
[1402] | 1634 | |
---|
[1540] | 1635 | /// This type provides simple invertable graph-maps. |
---|
[1526] | 1636 | /// The InvertableMap wraps an arbitrary ReadWriteMap |
---|
| 1637 | /// and if a key is set to a new value then store it |
---|
[1402] | 1638 | /// in the inverse map. |
---|
[1931] | 1639 | /// |
---|
| 1640 | /// The values of the map can be accessed |
---|
| 1641 | /// with stl compatible forward iterator. |
---|
| 1642 | /// |
---|
[1402] | 1643 | /// \param _Graph The graph type. |
---|
[1830] | 1644 | /// \param _Item The item type of the graph. |
---|
| 1645 | /// \param _Value The value type of the map. |
---|
[1931] | 1646 | /// |
---|
| 1647 | /// \see IterableValueMap |
---|
[1830] | 1648 | template <typename _Graph, typename _Item, typename _Value> |
---|
[2287] | 1649 | class InvertableMap : protected DefaultMap<_Graph, _Item, _Value> { |
---|
[1931] | 1650 | private: |
---|
| 1651 | |
---|
[2287] | 1652 | typedef DefaultMap<_Graph, _Item, _Value> Map; |
---|
[1931] | 1653 | typedef _Graph Graph; |
---|
| 1654 | |
---|
[2287] | 1655 | typedef std::map<_Value, _Item> Container; |
---|
[1931] | 1656 | Container invMap; |
---|
| 1657 | |
---|
| 1658 | public: |
---|
| 1659 | |
---|
[2287] | 1660 | /// The key type of InvertableMap (Node, Edge, UEdge). |
---|
| 1661 | typedef typename Map::Key Key; |
---|
| 1662 | /// The value type of the InvertableMap. |
---|
| 1663 | typedef typename Map::Value Value; |
---|
| 1664 | |
---|
[1931] | 1665 | |
---|
| 1666 | |
---|
[1402] | 1667 | /// \brief Constructor. |
---|
| 1668 | /// |
---|
[1413] | 1669 | /// Construct a new InvertableMap for the graph. |
---|
[1402] | 1670 | /// |
---|
[2286] | 1671 | explicit InvertableMap(const Graph& graph) : Map(graph) {} |
---|
[1931] | 1672 | |
---|
| 1673 | /// \brief Forward iterator for values. |
---|
| 1674 | /// |
---|
| 1675 | /// This iterator is an stl compatible forward |
---|
| 1676 | /// iterator on the values of the map. The values can |
---|
| 1677 | /// be accessed in the [beginValue, endValue) range. |
---|
| 1678 | /// |
---|
| 1679 | class ValueIterator |
---|
| 1680 | : public std::iterator<std::forward_iterator_tag, Value> { |
---|
| 1681 | friend class InvertableMap; |
---|
| 1682 | private: |
---|
| 1683 | ValueIterator(typename Container::const_iterator _it) |
---|
| 1684 | : it(_it) {} |
---|
| 1685 | public: |
---|
| 1686 | |
---|
| 1687 | ValueIterator() {} |
---|
| 1688 | |
---|
| 1689 | ValueIterator& operator++() { ++it; return *this; } |
---|
| 1690 | ValueIterator operator++(int) { |
---|
| 1691 | ValueIterator tmp(*this); |
---|
| 1692 | operator++(); |
---|
| 1693 | return tmp; |
---|
| 1694 | } |
---|
| 1695 | |
---|
| 1696 | const Value& operator*() const { return it->first; } |
---|
| 1697 | const Value* operator->() const { return &(it->first); } |
---|
| 1698 | |
---|
| 1699 | bool operator==(ValueIterator jt) const { return it == jt.it; } |
---|
| 1700 | bool operator!=(ValueIterator jt) const { return it != jt.it; } |
---|
| 1701 | |
---|
| 1702 | private: |
---|
| 1703 | typename Container::const_iterator it; |
---|
| 1704 | }; |
---|
| 1705 | |
---|
| 1706 | /// \brief Returns an iterator to the first value. |
---|
| 1707 | /// |
---|
| 1708 | /// Returns an stl compatible iterator to the |
---|
| 1709 | /// first value of the map. The values of the |
---|
| 1710 | /// map can be accessed in the [beginValue, endValue) |
---|
| 1711 | /// range. |
---|
| 1712 | ValueIterator beginValue() const { |
---|
| 1713 | return ValueIterator(invMap.begin()); |
---|
| 1714 | } |
---|
| 1715 | |
---|
| 1716 | /// \brief Returns an iterator after the last value. |
---|
| 1717 | /// |
---|
| 1718 | /// Returns an stl compatible iterator after the |
---|
| 1719 | /// last value of the map. The values of the |
---|
| 1720 | /// map can be accessed in the [beginValue, endValue) |
---|
| 1721 | /// range. |
---|
| 1722 | ValueIterator endValue() const { |
---|
| 1723 | return ValueIterator(invMap.end()); |
---|
| 1724 | } |
---|
[1402] | 1725 | |
---|
| 1726 | /// \brief The setter function of the map. |
---|
| 1727 | /// |
---|
[1413] | 1728 | /// Sets the mapped value. |
---|
[1402] | 1729 | void set(const Key& key, const Value& val) { |
---|
| 1730 | Value oldval = Map::operator[](key); |
---|
[1413] | 1731 | typename Container::iterator it = invMap.find(oldval); |
---|
[1402] | 1732 | if (it != invMap.end() && it->second == key) { |
---|
| 1733 | invMap.erase(it); |
---|
| 1734 | } |
---|
| 1735 | invMap.insert(make_pair(val, key)); |
---|
| 1736 | Map::set(key, val); |
---|
| 1737 | } |
---|
| 1738 | |
---|
| 1739 | /// \brief The getter function of the map. |
---|
| 1740 | /// |
---|
| 1741 | /// It gives back the value associated with the key. |
---|
[1931] | 1742 | typename MapTraits<Map>::ConstReturnValue |
---|
| 1743 | operator[](const Key& key) const { |
---|
[1402] | 1744 | return Map::operator[](key); |
---|
| 1745 | } |
---|
| 1746 | |
---|
[1515] | 1747 | protected: |
---|
| 1748 | |
---|
[1402] | 1749 | /// \brief Erase the key from the map. |
---|
| 1750 | /// |
---|
| 1751 | /// Erase the key to the map. It is called by the |
---|
| 1752 | /// \c AlterationNotifier. |
---|
| 1753 | virtual void erase(const Key& key) { |
---|
| 1754 | Value val = Map::operator[](key); |
---|
[1413] | 1755 | typename Container::iterator it = invMap.find(val); |
---|
[1402] | 1756 | if (it != invMap.end() && it->second == key) { |
---|
| 1757 | invMap.erase(it); |
---|
| 1758 | } |
---|
| 1759 | Map::erase(key); |
---|
| 1760 | } |
---|
| 1761 | |
---|
[1829] | 1762 | /// \brief Erase more keys from the map. |
---|
| 1763 | /// |
---|
| 1764 | /// Erase more keys from the map. It is called by the |
---|
| 1765 | /// \c AlterationNotifier. |
---|
| 1766 | virtual void erase(const std::vector<Key>& keys) { |
---|
| 1767 | for (int i = 0; i < (int)keys.size(); ++i) { |
---|
| 1768 | Value val = Map::operator[](keys[i]); |
---|
| 1769 | typename Container::iterator it = invMap.find(val); |
---|
| 1770 | if (it != invMap.end() && it->second == keys[i]) { |
---|
| 1771 | invMap.erase(it); |
---|
| 1772 | } |
---|
| 1773 | } |
---|
| 1774 | Map::erase(keys); |
---|
| 1775 | } |
---|
| 1776 | |
---|
[1402] | 1777 | /// \brief Clear the keys from the map and inverse map. |
---|
| 1778 | /// |
---|
| 1779 | /// Clear the keys from the map and inverse map. It is called by the |
---|
| 1780 | /// \c AlterationNotifier. |
---|
| 1781 | virtual void clear() { |
---|
| 1782 | invMap.clear(); |
---|
| 1783 | Map::clear(); |
---|
| 1784 | } |
---|
| 1785 | |
---|
[1413] | 1786 | public: |
---|
| 1787 | |
---|
| 1788 | /// \brief The inverse map type. |
---|
| 1789 | /// |
---|
| 1790 | /// The inverse of this map. The subscript operator of the map |
---|
| 1791 | /// gives back always the item what was last assigned to the value. |
---|
| 1792 | class InverseMap { |
---|
| 1793 | public: |
---|
| 1794 | /// \brief Constructor of the InverseMap. |
---|
| 1795 | /// |
---|
| 1796 | /// Constructor of the InverseMap. |
---|
[2286] | 1797 | explicit InverseMap(const InvertableMap& _inverted) |
---|
| 1798 | : inverted(_inverted) {} |
---|
[1413] | 1799 | |
---|
| 1800 | /// The value type of the InverseMap. |
---|
| 1801 | typedef typename InvertableMap::Key Value; |
---|
| 1802 | /// The key type of the InverseMap. |
---|
| 1803 | typedef typename InvertableMap::Value Key; |
---|
| 1804 | |
---|
| 1805 | /// \brief Subscript operator. |
---|
| 1806 | /// |
---|
| 1807 | /// Subscript operator. It gives back always the item |
---|
| 1808 | /// what was last assigned to the value. |
---|
| 1809 | Value operator[](const Key& key) const { |
---|
| 1810 | typename Container::const_iterator it = inverted.invMap.find(key); |
---|
| 1811 | return it->second; |
---|
| 1812 | } |
---|
| 1813 | |
---|
| 1814 | private: |
---|
| 1815 | const InvertableMap& inverted; |
---|
| 1816 | }; |
---|
| 1817 | |
---|
[2094] | 1818 | /// \brief It gives back the just readable inverse map. |
---|
[1402] | 1819 | /// |
---|
[2094] | 1820 | /// It gives back the just readable inverse map. |
---|
[1413] | 1821 | InverseMap inverse() const { |
---|
| 1822 | return InverseMap(*this); |
---|
[1402] | 1823 | } |
---|
| 1824 | |
---|
| 1825 | |
---|
[1413] | 1826 | |
---|
[1402] | 1827 | }; |
---|
| 1828 | |
---|
| 1829 | /// \brief Provides a mutable, continuous and unique descriptor for each |
---|
| 1830 | /// item in the graph. |
---|
| 1831 | /// |
---|
[1540] | 1832 | /// The DescriptorMap class provides a unique and continuous (but mutable) |
---|
| 1833 | /// descriptor (id) for each item of the same type (e.g. node) in the |
---|
| 1834 | /// graph. This id is <ul><li>\b unique: different items (nodes) get |
---|
| 1835 | /// different ids <li>\b continuous: the range of the ids is the set of |
---|
| 1836 | /// integers between 0 and \c n-1, where \c n is the number of the items of |
---|
| 1837 | /// this type (e.g. nodes) (so the id of a node can change if you delete an |
---|
| 1838 | /// other node, i.e. this id is mutable). </ul> This map can be inverted |
---|
| 1839 | /// with its member class \c InverseMap. |
---|
[1402] | 1840 | /// |
---|
| 1841 | /// \param _Graph The graph class the \c DescriptorMap belongs to. |
---|
| 1842 | /// \param _Item The Item is the Key of the Map. It may be Node, Edge or |
---|
[1909] | 1843 | /// UEdge. |
---|
[1830] | 1844 | template <typename _Graph, typename _Item> |
---|
[2287] | 1845 | class DescriptorMap : protected DefaultMap<_Graph, _Item, int> { |
---|
[1402] | 1846 | |
---|
| 1847 | typedef _Item Item; |
---|
[2287] | 1848 | typedef DefaultMap<_Graph, _Item, int> Map; |
---|
[1402] | 1849 | |
---|
| 1850 | public: |
---|
| 1851 | /// The graph class of DescriptorMap. |
---|
| 1852 | typedef _Graph Graph; |
---|
| 1853 | |
---|
[1909] | 1854 | /// The key type of DescriptorMap (Node, Edge, UEdge). |
---|
[2287] | 1855 | typedef typename Map::Key Key; |
---|
[1402] | 1856 | /// The value type of DescriptorMap. |
---|
[2287] | 1857 | typedef typename Map::Value Value; |
---|
[1402] | 1858 | |
---|
| 1859 | /// \brief Constructor. |
---|
| 1860 | /// |
---|
[1413] | 1861 | /// Constructor for descriptor map. |
---|
[2286] | 1862 | explicit DescriptorMap(const Graph& _graph) : Map(_graph) { |
---|
[2201] | 1863 | Item it; |
---|
| 1864 | const typename Map::Notifier* notifier = Map::getNotifier(); |
---|
| 1865 | for (notifier->first(it); it != INVALID; notifier->next(it)) { |
---|
| 1866 | Map::set(it, invMap.size()); |
---|
| 1867 | invMap.push_back(it); |
---|
| 1868 | } |
---|
[1402] | 1869 | } |
---|
| 1870 | |
---|
[1515] | 1871 | protected: |
---|
| 1872 | |
---|
[1402] | 1873 | /// \brief Add a new key to the map. |
---|
| 1874 | /// |
---|
| 1875 | /// Add a new key to the map. It is called by the |
---|
| 1876 | /// \c AlterationNotifier. |
---|
| 1877 | virtual void add(const Item& item) { |
---|
| 1878 | Map::add(item); |
---|
| 1879 | Map::set(item, invMap.size()); |
---|
| 1880 | invMap.push_back(item); |
---|
| 1881 | } |
---|
| 1882 | |
---|
[1829] | 1883 | /// \brief Add more new keys to the map. |
---|
| 1884 | /// |
---|
| 1885 | /// Add more new keys to the map. It is called by the |
---|
| 1886 | /// \c AlterationNotifier. |
---|
| 1887 | virtual void add(const std::vector<Item>& items) { |
---|
| 1888 | Map::add(items); |
---|
| 1889 | for (int i = 0; i < (int)items.size(); ++i) { |
---|
| 1890 | Map::set(items[i], invMap.size()); |
---|
| 1891 | invMap.push_back(items[i]); |
---|
| 1892 | } |
---|
| 1893 | } |
---|
| 1894 | |
---|
[1402] | 1895 | /// \brief Erase the key from the map. |
---|
| 1896 | /// |
---|
[1829] | 1897 | /// Erase the key from the map. It is called by the |
---|
[1402] | 1898 | /// \c AlterationNotifier. |
---|
| 1899 | virtual void erase(const Item& item) { |
---|
| 1900 | Map::set(invMap.back(), Map::operator[](item)); |
---|
| 1901 | invMap[Map::operator[](item)] = invMap.back(); |
---|
[1413] | 1902 | invMap.pop_back(); |
---|
[1402] | 1903 | Map::erase(item); |
---|
| 1904 | } |
---|
| 1905 | |
---|
[1829] | 1906 | /// \brief Erase more keys from the map. |
---|
| 1907 | /// |
---|
| 1908 | /// Erase more keys from the map. It is called by the |
---|
| 1909 | /// \c AlterationNotifier. |
---|
| 1910 | virtual void erase(const std::vector<Item>& items) { |
---|
| 1911 | for (int i = 0; i < (int)items.size(); ++i) { |
---|
| 1912 | Map::set(invMap.back(), Map::operator[](items[i])); |
---|
| 1913 | invMap[Map::operator[](items[i])] = invMap.back(); |
---|
| 1914 | invMap.pop_back(); |
---|
| 1915 | } |
---|
| 1916 | Map::erase(items); |
---|
| 1917 | } |
---|
| 1918 | |
---|
[1402] | 1919 | /// \brief Build the unique map. |
---|
| 1920 | /// |
---|
| 1921 | /// Build the unique map. It is called by the |
---|
| 1922 | /// \c AlterationNotifier. |
---|
| 1923 | virtual void build() { |
---|
| 1924 | Map::build(); |
---|
| 1925 | Item it; |
---|
[1999] | 1926 | const typename Map::Notifier* notifier = Map::getNotifier(); |
---|
| 1927 | for (notifier->first(it); it != INVALID; notifier->next(it)) { |
---|
[1402] | 1928 | Map::set(it, invMap.size()); |
---|
| 1929 | invMap.push_back(it); |
---|
| 1930 | } |
---|
| 1931 | } |
---|
| 1932 | |
---|
| 1933 | /// \brief Clear the keys from the map. |
---|
| 1934 | /// |
---|
| 1935 | /// Clear the keys from the map. It is called by the |
---|
| 1936 | /// \c AlterationNotifier. |
---|
| 1937 | virtual void clear() { |
---|
| 1938 | invMap.clear(); |
---|
| 1939 | Map::clear(); |
---|
| 1940 | } |
---|
| 1941 | |
---|
[1538] | 1942 | public: |
---|
| 1943 | |
---|
[1931] | 1944 | /// \brief Returns the maximal value plus one. |
---|
| 1945 | /// |
---|
| 1946 | /// Returns the maximal value plus one in the map. |
---|
| 1947 | unsigned int size() const { |
---|
| 1948 | return invMap.size(); |
---|
| 1949 | } |
---|
| 1950 | |
---|
[1552] | 1951 | /// \brief Swaps the position of the two items in the map. |
---|
| 1952 | /// |
---|
| 1953 | /// Swaps the position of the two items in the map. |
---|
| 1954 | void swap(const Item& p, const Item& q) { |
---|
| 1955 | int pi = Map::operator[](p); |
---|
| 1956 | int qi = Map::operator[](q); |
---|
| 1957 | Map::set(p, qi); |
---|
| 1958 | invMap[qi] = p; |
---|
| 1959 | Map::set(q, pi); |
---|
| 1960 | invMap[pi] = q; |
---|
| 1961 | } |
---|
| 1962 | |
---|
[1402] | 1963 | /// \brief Gives back the \e descriptor of the item. |
---|
| 1964 | /// |
---|
| 1965 | /// Gives back the mutable and unique \e descriptor of the map. |
---|
| 1966 | int operator[](const Item& item) const { |
---|
| 1967 | return Map::operator[](item); |
---|
| 1968 | } |
---|
| 1969 | |
---|
[1413] | 1970 | private: |
---|
| 1971 | |
---|
| 1972 | typedef std::vector<Item> Container; |
---|
| 1973 | Container invMap; |
---|
| 1974 | |
---|
| 1975 | public: |
---|
[1540] | 1976 | /// \brief The inverse map type of DescriptorMap. |
---|
[1413] | 1977 | /// |
---|
[1540] | 1978 | /// The inverse map type of DescriptorMap. |
---|
[1413] | 1979 | class InverseMap { |
---|
| 1980 | public: |
---|
| 1981 | /// \brief Constructor of the InverseMap. |
---|
| 1982 | /// |
---|
| 1983 | /// Constructor of the InverseMap. |
---|
[2286] | 1984 | explicit InverseMap(const DescriptorMap& _inverted) |
---|
[1413] | 1985 | : inverted(_inverted) {} |
---|
| 1986 | |
---|
| 1987 | |
---|
| 1988 | /// The value type of the InverseMap. |
---|
| 1989 | typedef typename DescriptorMap::Key Value; |
---|
| 1990 | /// The key type of the InverseMap. |
---|
| 1991 | typedef typename DescriptorMap::Value Key; |
---|
| 1992 | |
---|
| 1993 | /// \brief Subscript operator. |
---|
| 1994 | /// |
---|
| 1995 | /// Subscript operator. It gives back the item |
---|
| 1996 | /// that the descriptor belongs to currently. |
---|
| 1997 | Value operator[](const Key& key) const { |
---|
| 1998 | return inverted.invMap[key]; |
---|
| 1999 | } |
---|
[1470] | 2000 | |
---|
| 2001 | /// \brief Size of the map. |
---|
| 2002 | /// |
---|
| 2003 | /// Returns the size of the map. |
---|
[1931] | 2004 | unsigned int size() const { |
---|
[1470] | 2005 | return inverted.invMap.size(); |
---|
| 2006 | } |
---|
[1413] | 2007 | |
---|
| 2008 | private: |
---|
| 2009 | const DescriptorMap& inverted; |
---|
| 2010 | }; |
---|
| 2011 | |
---|
[1402] | 2012 | /// \brief Gives back the inverse of the map. |
---|
| 2013 | /// |
---|
| 2014 | /// Gives back the inverse of the map. |
---|
| 2015 | const InverseMap inverse() const { |
---|
[1413] | 2016 | return InverseMap(*this); |
---|
[1402] | 2017 | } |
---|
| 2018 | }; |
---|
| 2019 | |
---|
| 2020 | /// \brief Returns the source of the given edge. |
---|
| 2021 | /// |
---|
| 2022 | /// The SourceMap gives back the source Node of the given edge. |
---|
| 2023 | /// \author Balazs Dezso |
---|
| 2024 | template <typename Graph> |
---|
| 2025 | class SourceMap { |
---|
| 2026 | public: |
---|
[1419] | 2027 | |
---|
[1402] | 2028 | typedef typename Graph::Node Value; |
---|
| 2029 | typedef typename Graph::Edge Key; |
---|
| 2030 | |
---|
| 2031 | /// \brief Constructor |
---|
| 2032 | /// |
---|
| 2033 | /// Constructor |
---|
| 2034 | /// \param _graph The graph that the map belongs to. |
---|
[2286] | 2035 | explicit SourceMap(const Graph& _graph) : graph(_graph) {} |
---|
[1402] | 2036 | |
---|
| 2037 | /// \brief The subscript operator. |
---|
| 2038 | /// |
---|
| 2039 | /// The subscript operator. |
---|
| 2040 | /// \param edge The edge |
---|
| 2041 | /// \return The source of the edge |
---|
[1679] | 2042 | Value operator[](const Key& edge) const { |
---|
[1402] | 2043 | return graph.source(edge); |
---|
| 2044 | } |
---|
| 2045 | |
---|
| 2046 | private: |
---|
| 2047 | const Graph& graph; |
---|
| 2048 | }; |
---|
| 2049 | |
---|
| 2050 | /// \brief Returns a \ref SourceMap class |
---|
| 2051 | /// |
---|
| 2052 | /// This function just returns an \ref SourceMap class. |
---|
| 2053 | /// \relates SourceMap |
---|
| 2054 | template <typename Graph> |
---|
| 2055 | inline SourceMap<Graph> sourceMap(const Graph& graph) { |
---|
| 2056 | return SourceMap<Graph>(graph); |
---|
| 2057 | } |
---|
| 2058 | |
---|
| 2059 | /// \brief Returns the target of the given edge. |
---|
| 2060 | /// |
---|
| 2061 | /// The TargetMap gives back the target Node of the given edge. |
---|
| 2062 | /// \author Balazs Dezso |
---|
| 2063 | template <typename Graph> |
---|
| 2064 | class TargetMap { |
---|
| 2065 | public: |
---|
[1419] | 2066 | |
---|
[1402] | 2067 | typedef typename Graph::Node Value; |
---|
| 2068 | typedef typename Graph::Edge Key; |
---|
| 2069 | |
---|
| 2070 | /// \brief Constructor |
---|
| 2071 | /// |
---|
| 2072 | /// Constructor |
---|
| 2073 | /// \param _graph The graph that the map belongs to. |
---|
[2286] | 2074 | explicit TargetMap(const Graph& _graph) : graph(_graph) {} |
---|
[1402] | 2075 | |
---|
| 2076 | /// \brief The subscript operator. |
---|
| 2077 | /// |
---|
| 2078 | /// The subscript operator. |
---|
[1536] | 2079 | /// \param e The edge |
---|
[1402] | 2080 | /// \return The target of the edge |
---|
[1679] | 2081 | Value operator[](const Key& e) const { |
---|
[1536] | 2082 | return graph.target(e); |
---|
[1402] | 2083 | } |
---|
| 2084 | |
---|
| 2085 | private: |
---|
| 2086 | const Graph& graph; |
---|
| 2087 | }; |
---|
| 2088 | |
---|
| 2089 | /// \brief Returns a \ref TargetMap class |
---|
[1515] | 2090 | /// |
---|
[1540] | 2091 | /// This function just returns a \ref TargetMap class. |
---|
[1402] | 2092 | /// \relates TargetMap |
---|
| 2093 | template <typename Graph> |
---|
| 2094 | inline TargetMap<Graph> targetMap(const Graph& graph) { |
---|
| 2095 | return TargetMap<Graph>(graph); |
---|
| 2096 | } |
---|
| 2097 | |
---|
[1540] | 2098 | /// \brief Returns the "forward" directed edge view of an undirected edge. |
---|
[1419] | 2099 | /// |
---|
[1540] | 2100 | /// Returns the "forward" directed edge view of an undirected edge. |
---|
[1419] | 2101 | /// \author Balazs Dezso |
---|
| 2102 | template <typename Graph> |
---|
| 2103 | class ForwardMap { |
---|
| 2104 | public: |
---|
| 2105 | |
---|
| 2106 | typedef typename Graph::Edge Value; |
---|
[1909] | 2107 | typedef typename Graph::UEdge Key; |
---|
[1419] | 2108 | |
---|
| 2109 | /// \brief Constructor |
---|
| 2110 | /// |
---|
| 2111 | /// Constructor |
---|
| 2112 | /// \param _graph The graph that the map belongs to. |
---|
[2286] | 2113 | explicit ForwardMap(const Graph& _graph) : graph(_graph) {} |
---|
[1419] | 2114 | |
---|
| 2115 | /// \brief The subscript operator. |
---|
| 2116 | /// |
---|
| 2117 | /// The subscript operator. |
---|
| 2118 | /// \param key An undirected edge |
---|
| 2119 | /// \return The "forward" directed edge view of undirected edge |
---|
| 2120 | Value operator[](const Key& key) const { |
---|
[1627] | 2121 | return graph.direct(key, true); |
---|
[1419] | 2122 | } |
---|
| 2123 | |
---|
| 2124 | private: |
---|
| 2125 | const Graph& graph; |
---|
| 2126 | }; |
---|
| 2127 | |
---|
| 2128 | /// \brief Returns a \ref ForwardMap class |
---|
[1515] | 2129 | /// |
---|
[1419] | 2130 | /// This function just returns an \ref ForwardMap class. |
---|
| 2131 | /// \relates ForwardMap |
---|
| 2132 | template <typename Graph> |
---|
| 2133 | inline ForwardMap<Graph> forwardMap(const Graph& graph) { |
---|
| 2134 | return ForwardMap<Graph>(graph); |
---|
| 2135 | } |
---|
| 2136 | |
---|
[1540] | 2137 | /// \brief Returns the "backward" directed edge view of an undirected edge. |
---|
[1419] | 2138 | /// |
---|
[1540] | 2139 | /// Returns the "backward" directed edge view of an undirected edge. |
---|
[1419] | 2140 | /// \author Balazs Dezso |
---|
| 2141 | template <typename Graph> |
---|
| 2142 | class BackwardMap { |
---|
| 2143 | public: |
---|
| 2144 | |
---|
| 2145 | typedef typename Graph::Edge Value; |
---|
[1909] | 2146 | typedef typename Graph::UEdge Key; |
---|
[1419] | 2147 | |
---|
| 2148 | /// \brief Constructor |
---|
| 2149 | /// |
---|
| 2150 | /// Constructor |
---|
| 2151 | /// \param _graph The graph that the map belongs to. |
---|
[2286] | 2152 | explicit BackwardMap(const Graph& _graph) : graph(_graph) {} |
---|
[1419] | 2153 | |
---|
| 2154 | /// \brief The subscript operator. |
---|
| 2155 | /// |
---|
| 2156 | /// The subscript operator. |
---|
| 2157 | /// \param key An undirected edge |
---|
| 2158 | /// \return The "backward" directed edge view of undirected edge |
---|
| 2159 | Value operator[](const Key& key) const { |
---|
[1627] | 2160 | return graph.direct(key, false); |
---|
[1419] | 2161 | } |
---|
| 2162 | |
---|
| 2163 | private: |
---|
| 2164 | const Graph& graph; |
---|
| 2165 | }; |
---|
| 2166 | |
---|
| 2167 | /// \brief Returns a \ref BackwardMap class |
---|
| 2168 | |
---|
[1540] | 2169 | /// This function just returns a \ref BackwardMap class. |
---|
[1419] | 2170 | /// \relates BackwardMap |
---|
| 2171 | template <typename Graph> |
---|
| 2172 | inline BackwardMap<Graph> backwardMap(const Graph& graph) { |
---|
| 2173 | return BackwardMap<Graph>(graph); |
---|
| 2174 | } |
---|
| 2175 | |
---|
[1695] | 2176 | /// \brief Potential difference map |
---|
| 2177 | /// |
---|
| 2178 | /// If there is an potential map on the nodes then we |
---|
| 2179 | /// can get an edge map as we get the substraction of the |
---|
| 2180 | /// values of the target and source. |
---|
| 2181 | template <typename Graph, typename NodeMap> |
---|
| 2182 | class PotentialDifferenceMap { |
---|
[1515] | 2183 | public: |
---|
[1695] | 2184 | typedef typename Graph::Edge Key; |
---|
| 2185 | typedef typename NodeMap::Value Value; |
---|
| 2186 | |
---|
| 2187 | /// \brief Constructor |
---|
| 2188 | /// |
---|
| 2189 | /// Contructor of the map |
---|
[2286] | 2190 | explicit PotentialDifferenceMap(const Graph& _graph, |
---|
| 2191 | const NodeMap& _potential) |
---|
[1695] | 2192 | : graph(_graph), potential(_potential) {} |
---|
| 2193 | |
---|
| 2194 | /// \brief Const subscription operator |
---|
| 2195 | /// |
---|
| 2196 | /// Const subscription operator |
---|
| 2197 | Value operator[](const Key& edge) const { |
---|
| 2198 | return potential[graph.target(edge)] - potential[graph.source(edge)]; |
---|
| 2199 | } |
---|
| 2200 | |
---|
| 2201 | private: |
---|
| 2202 | const Graph& graph; |
---|
| 2203 | const NodeMap& potential; |
---|
| 2204 | }; |
---|
| 2205 | |
---|
| 2206 | /// \brief Just returns a PotentialDifferenceMap |
---|
| 2207 | /// |
---|
| 2208 | /// Just returns a PotentialDifferenceMap |
---|
| 2209 | /// \relates PotentialDifferenceMap |
---|
| 2210 | template <typename Graph, typename NodeMap> |
---|
| 2211 | PotentialDifferenceMap<Graph, NodeMap> |
---|
| 2212 | potentialDifferenceMap(const Graph& graph, const NodeMap& potential) { |
---|
| 2213 | return PotentialDifferenceMap<Graph, NodeMap>(graph, potential); |
---|
| 2214 | } |
---|
| 2215 | |
---|
[1515] | 2216 | /// \brief Map of the node in-degrees. |
---|
[1453] | 2217 | /// |
---|
[1540] | 2218 | /// This map returns the in-degree of a node. Once it is constructed, |
---|
[1515] | 2219 | /// the degrees are stored in a standard NodeMap, so each query is done |
---|
[1540] | 2220 | /// in constant time. On the other hand, the values are updated automatically |
---|
[1515] | 2221 | /// whenever the graph changes. |
---|
| 2222 | /// |
---|
[1729] | 2223 | /// \warning Besides addNode() and addEdge(), a graph structure may provide |
---|
[1730] | 2224 | /// alternative ways to modify the graph. The correct behavior of InDegMap |
---|
[1829] | 2225 | /// is not guarantied if these additional features are used. For example |
---|
| 2226 | /// the functions \ref ListGraph::changeSource() "changeSource()", |
---|
[1729] | 2227 | /// \ref ListGraph::changeTarget() "changeTarget()" and |
---|
| 2228 | /// \ref ListGraph::reverseEdge() "reverseEdge()" |
---|
| 2229 | /// of \ref ListGraph will \e not update the degree values correctly. |
---|
| 2230 | /// |
---|
[1515] | 2231 | /// \sa OutDegMap |
---|
| 2232 | |
---|
[1453] | 2233 | template <typename _Graph> |
---|
[1515] | 2234 | class InDegMap |
---|
[1999] | 2235 | : protected ItemSetTraits<_Graph, typename _Graph::Edge> |
---|
| 2236 | ::ItemNotifier::ObserverBase { |
---|
[1515] | 2237 | |
---|
[1453] | 2238 | public: |
---|
[1515] | 2239 | |
---|
| 2240 | typedef _Graph Graph; |
---|
[1453] | 2241 | typedef int Value; |
---|
[1515] | 2242 | typedef typename Graph::Node Key; |
---|
| 2243 | |
---|
[1999] | 2244 | typedef typename ItemSetTraits<_Graph, typename _Graph::Edge> |
---|
| 2245 | ::ItemNotifier::ObserverBase Parent; |
---|
| 2246 | |
---|
[1515] | 2247 | private: |
---|
| 2248 | |
---|
[1990] | 2249 | class AutoNodeMap : public DefaultMap<_Graph, Key, int> { |
---|
[1515] | 2250 | public: |
---|
| 2251 | |
---|
[1990] | 2252 | typedef DefaultMap<_Graph, Key, int> Parent; |
---|
[2002] | 2253 | typedef typename Parent::Graph Graph; |
---|
[1515] | 2254 | |
---|
| 2255 | AutoNodeMap(const Graph& graph) : Parent(graph, 0) {} |
---|
| 2256 | |
---|
[1829] | 2257 | virtual void add(const Key& key) { |
---|
[1515] | 2258 | Parent::add(key); |
---|
| 2259 | Parent::set(key, 0); |
---|
| 2260 | } |
---|
[1931] | 2261 | |
---|
[1829] | 2262 | virtual void add(const std::vector<Key>& keys) { |
---|
| 2263 | Parent::add(keys); |
---|
| 2264 | for (int i = 0; i < (int)keys.size(); ++i) { |
---|
| 2265 | Parent::set(keys[i], 0); |
---|
| 2266 | } |
---|
| 2267 | } |
---|
[1515] | 2268 | }; |
---|
| 2269 | |
---|
| 2270 | public: |
---|
[1453] | 2271 | |
---|
| 2272 | /// \brief Constructor. |
---|
| 2273 | /// |
---|
| 2274 | /// Constructor for creating in-degree map. |
---|
[2286] | 2275 | explicit InDegMap(const Graph& _graph) : graph(_graph), deg(_graph) { |
---|
[1999] | 2276 | Parent::attach(graph.getNotifier(typename _Graph::Edge())); |
---|
[1515] | 2277 | |
---|
| 2278 | for(typename _Graph::NodeIt it(graph); it != INVALID; ++it) { |
---|
| 2279 | deg[it] = countInEdges(graph, it); |
---|
| 2280 | } |
---|
[1453] | 2281 | } |
---|
| 2282 | |
---|
[1459] | 2283 | /// Gives back the in-degree of a Node. |
---|
[1515] | 2284 | int operator[](const Key& key) const { |
---|
| 2285 | return deg[key]; |
---|
[1459] | 2286 | } |
---|
[1453] | 2287 | |
---|
| 2288 | protected: |
---|
[1515] | 2289 | |
---|
| 2290 | typedef typename Graph::Edge Edge; |
---|
| 2291 | |
---|
| 2292 | virtual void add(const Edge& edge) { |
---|
| 2293 | ++deg[graph.target(edge)]; |
---|
[1453] | 2294 | } |
---|
| 2295 | |
---|
[1931] | 2296 | virtual void add(const std::vector<Edge>& edges) { |
---|
| 2297 | for (int i = 0; i < (int)edges.size(); ++i) { |
---|
| 2298 | ++deg[graph.target(edges[i])]; |
---|
| 2299 | } |
---|
| 2300 | } |
---|
| 2301 | |
---|
[1515] | 2302 | virtual void erase(const Edge& edge) { |
---|
| 2303 | --deg[graph.target(edge)]; |
---|
| 2304 | } |
---|
| 2305 | |
---|
[1931] | 2306 | virtual void erase(const std::vector<Edge>& edges) { |
---|
| 2307 | for (int i = 0; i < (int)edges.size(); ++i) { |
---|
| 2308 | --deg[graph.target(edges[i])]; |
---|
| 2309 | } |
---|
| 2310 | } |
---|
| 2311 | |
---|
[1515] | 2312 | virtual void build() { |
---|
| 2313 | for(typename _Graph::NodeIt it(graph); it != INVALID; ++it) { |
---|
| 2314 | deg[it] = countInEdges(graph, it); |
---|
| 2315 | } |
---|
| 2316 | } |
---|
| 2317 | |
---|
| 2318 | virtual void clear() { |
---|
| 2319 | for(typename _Graph::NodeIt it(graph); it != INVALID; ++it) { |
---|
| 2320 | deg[it] = 0; |
---|
| 2321 | } |
---|
| 2322 | } |
---|
| 2323 | private: |
---|
[1506] | 2324 | |
---|
[1515] | 2325 | const _Graph& graph; |
---|
| 2326 | AutoNodeMap deg; |
---|
[1459] | 2327 | }; |
---|
| 2328 | |
---|
[1515] | 2329 | /// \brief Map of the node out-degrees. |
---|
| 2330 | /// |
---|
[1540] | 2331 | /// This map returns the out-degree of a node. Once it is constructed, |
---|
[1515] | 2332 | /// the degrees are stored in a standard NodeMap, so each query is done |
---|
[1540] | 2333 | /// in constant time. On the other hand, the values are updated automatically |
---|
[1515] | 2334 | /// whenever the graph changes. |
---|
| 2335 | /// |
---|
[1729] | 2336 | /// \warning Besides addNode() and addEdge(), a graph structure may provide |
---|
[1730] | 2337 | /// alternative ways to modify the graph. The correct behavior of OutDegMap |
---|
[1829] | 2338 | /// is not guarantied if these additional features are used. For example |
---|
| 2339 | /// the functions \ref ListGraph::changeSource() "changeSource()", |
---|
[1729] | 2340 | /// \ref ListGraph::changeTarget() "changeTarget()" and |
---|
| 2341 | /// \ref ListGraph::reverseEdge() "reverseEdge()" |
---|
| 2342 | /// of \ref ListGraph will \e not update the degree values correctly. |
---|
| 2343 | /// |
---|
[1555] | 2344 | /// \sa InDegMap |
---|
[1459] | 2345 | |
---|
| 2346 | template <typename _Graph> |
---|
[1515] | 2347 | class OutDegMap |
---|
[1999] | 2348 | : protected ItemSetTraits<_Graph, typename _Graph::Edge> |
---|
| 2349 | ::ItemNotifier::ObserverBase { |
---|
[1515] | 2350 | |
---|
[1459] | 2351 | public: |
---|
[1999] | 2352 | |
---|
| 2353 | typedef typename ItemSetTraits<_Graph, typename _Graph::Edge> |
---|
| 2354 | ::ItemNotifier::ObserverBase Parent; |
---|
[1515] | 2355 | |
---|
| 2356 | typedef _Graph Graph; |
---|
[1459] | 2357 | typedef int Value; |
---|
[1515] | 2358 | typedef typename Graph::Node Key; |
---|
| 2359 | |
---|
| 2360 | private: |
---|
| 2361 | |
---|
[1990] | 2362 | class AutoNodeMap : public DefaultMap<_Graph, Key, int> { |
---|
[1515] | 2363 | public: |
---|
| 2364 | |
---|
[1990] | 2365 | typedef DefaultMap<_Graph, Key, int> Parent; |
---|
[2002] | 2366 | typedef typename Parent::Graph Graph; |
---|
[1515] | 2367 | |
---|
| 2368 | AutoNodeMap(const Graph& graph) : Parent(graph, 0) {} |
---|
| 2369 | |
---|
[1829] | 2370 | virtual void add(const Key& key) { |
---|
[1515] | 2371 | Parent::add(key); |
---|
| 2372 | Parent::set(key, 0); |
---|
| 2373 | } |
---|
[1829] | 2374 | virtual void add(const std::vector<Key>& keys) { |
---|
| 2375 | Parent::add(keys); |
---|
| 2376 | for (int i = 0; i < (int)keys.size(); ++i) { |
---|
| 2377 | Parent::set(keys[i], 0); |
---|
| 2378 | } |
---|
| 2379 | } |
---|
[1515] | 2380 | }; |
---|
| 2381 | |
---|
| 2382 | public: |
---|
[1459] | 2383 | |
---|
| 2384 | /// \brief Constructor. |
---|
| 2385 | /// |
---|
| 2386 | /// Constructor for creating out-degree map. |
---|
[2286] | 2387 | explicit OutDegMap(const Graph& _graph) : graph(_graph), deg(_graph) { |
---|
[1999] | 2388 | Parent::attach(graph.getNotifier(typename _Graph::Edge())); |
---|
[1515] | 2389 | |
---|
| 2390 | for(typename _Graph::NodeIt it(graph); it != INVALID; ++it) { |
---|
| 2391 | deg[it] = countOutEdges(graph, it); |
---|
| 2392 | } |
---|
[1459] | 2393 | } |
---|
| 2394 | |
---|
[1990] | 2395 | /// Gives back the out-degree of a Node. |
---|
[1515] | 2396 | int operator[](const Key& key) const { |
---|
| 2397 | return deg[key]; |
---|
[1459] | 2398 | } |
---|
| 2399 | |
---|
| 2400 | protected: |
---|
[1515] | 2401 | |
---|
| 2402 | typedef typename Graph::Edge Edge; |
---|
| 2403 | |
---|
| 2404 | virtual void add(const Edge& edge) { |
---|
| 2405 | ++deg[graph.source(edge)]; |
---|
[1459] | 2406 | } |
---|
| 2407 | |
---|
[1931] | 2408 | virtual void add(const std::vector<Edge>& edges) { |
---|
| 2409 | for (int i = 0; i < (int)edges.size(); ++i) { |
---|
| 2410 | ++deg[graph.source(edges[i])]; |
---|
| 2411 | } |
---|
| 2412 | } |
---|
| 2413 | |
---|
[1515] | 2414 | virtual void erase(const Edge& edge) { |
---|
| 2415 | --deg[graph.source(edge)]; |
---|
| 2416 | } |
---|
| 2417 | |
---|
[1931] | 2418 | virtual void erase(const std::vector<Edge>& edges) { |
---|
| 2419 | for (int i = 0; i < (int)edges.size(); ++i) { |
---|
| 2420 | --deg[graph.source(edges[i])]; |
---|
| 2421 | } |
---|
| 2422 | } |
---|
| 2423 | |
---|
[1515] | 2424 | virtual void build() { |
---|
| 2425 | for(typename _Graph::NodeIt it(graph); it != INVALID; ++it) { |
---|
| 2426 | deg[it] = countOutEdges(graph, it); |
---|
| 2427 | } |
---|
| 2428 | } |
---|
| 2429 | |
---|
| 2430 | virtual void clear() { |
---|
| 2431 | for(typename _Graph::NodeIt it(graph); it != INVALID; ++it) { |
---|
| 2432 | deg[it] = 0; |
---|
| 2433 | } |
---|
| 2434 | } |
---|
| 2435 | private: |
---|
[1506] | 2436 | |
---|
[1515] | 2437 | const _Graph& graph; |
---|
| 2438 | AutoNodeMap deg; |
---|
[1453] | 2439 | }; |
---|
| 2440 | |
---|
[1695] | 2441 | |
---|
[2235] | 2442 | ///Fast edge look up between given endpoints. |
---|
| 2443 | |
---|
| 2444 | ///\ingroup gutils |
---|
| 2445 | ///Using this class, you can find an edge in a graph from a given |
---|
| 2446 | ///source to a given target in time <em>O(log d)</em>, |
---|
| 2447 | ///where <em>d</em> is the out-degree of the source node. |
---|
| 2448 | /// |
---|
| 2449 | ///It is not possible to find \e all parallel edges between two nodes. |
---|
| 2450 | ///Use \ref AllEdgeLookUp for this purpose. |
---|
| 2451 | /// |
---|
| 2452 | ///\warning This class is static, so you should refresh() (or at least |
---|
| 2453 | ///refresh(Node)) this data structure |
---|
| 2454 | ///whenever the graph changes. This is a time consuming (superlinearly |
---|
| 2455 | ///proportional (<em>O(m</em>log<em>m)</em>) to the number of edges). |
---|
| 2456 | /// |
---|
| 2457 | ///\param G The type of the underlying graph. |
---|
| 2458 | /// |
---|
| 2459 | ///\sa AllEdgeLookUp |
---|
| 2460 | template<class G> |
---|
| 2461 | class EdgeLookUp |
---|
| 2462 | { |
---|
| 2463 | public: |
---|
| 2464 | GRAPH_TYPEDEFS(typename G) |
---|
| 2465 | typedef G Graph; |
---|
| 2466 | |
---|
| 2467 | protected: |
---|
| 2468 | const Graph &_g; |
---|
| 2469 | typename Graph::template NodeMap<Edge> _head; |
---|
| 2470 | typename Graph::template EdgeMap<Edge> _left; |
---|
| 2471 | typename Graph::template EdgeMap<Edge> _right; |
---|
| 2472 | |
---|
| 2473 | class EdgeLess { |
---|
| 2474 | const Graph &g; |
---|
| 2475 | public: |
---|
| 2476 | EdgeLess(const Graph &_g) : g(_g) {} |
---|
| 2477 | bool operator()(Edge a,Edge b) const |
---|
| 2478 | { |
---|
| 2479 | return g.target(a)<g.target(b); |
---|
| 2480 | } |
---|
| 2481 | }; |
---|
| 2482 | |
---|
| 2483 | public: |
---|
| 2484 | |
---|
| 2485 | ///Constructor |
---|
| 2486 | |
---|
| 2487 | ///Constructor. |
---|
| 2488 | /// |
---|
| 2489 | ///It builds up the search database, which remains valid until the graph |
---|
| 2490 | ///changes. |
---|
| 2491 | EdgeLookUp(const Graph &g) :_g(g),_head(g),_left(g),_right(g) {refresh();} |
---|
| 2492 | |
---|
| 2493 | private: |
---|
| 2494 | Edge refresh_rec(std::vector<Edge> &v,int a,int b) |
---|
| 2495 | { |
---|
| 2496 | int m=(a+b)/2; |
---|
| 2497 | Edge me=v[m]; |
---|
| 2498 | _left[me] = a<m?refresh_rec(v,a,m-1):INVALID; |
---|
| 2499 | _right[me] = m<b?refresh_rec(v,m+1,b):INVALID; |
---|
| 2500 | return me; |
---|
| 2501 | } |
---|
| 2502 | public: |
---|
| 2503 | ///Refresh the data structure at a node. |
---|
| 2504 | |
---|
| 2505 | ///Build up the search database of node \c n. |
---|
| 2506 | /// |
---|
| 2507 | ///It runs in time <em>O(d</em>log<em>d)</em>, where <em>d</em> is |
---|
| 2508 | ///the number of the outgoing edges of \c n. |
---|
| 2509 | void refresh(Node n) |
---|
| 2510 | { |
---|
| 2511 | std::vector<Edge> v; |
---|
| 2512 | for(OutEdgeIt e(_g,n);e!=INVALID;++e) v.push_back(e); |
---|
| 2513 | if(v.size()) { |
---|
| 2514 | std::sort(v.begin(),v.end(),EdgeLess(_g)); |
---|
| 2515 | _head[n]=refresh_rec(v,0,v.size()-1); |
---|
| 2516 | } |
---|
| 2517 | else _head[n]=INVALID; |
---|
| 2518 | } |
---|
| 2519 | ///Refresh the full data structure. |
---|
| 2520 | |
---|
| 2521 | ///Build up the full search database. In fact, it simply calls |
---|
| 2522 | ///\ref refresh(Node) "refresh(n)" for each node \c n. |
---|
| 2523 | /// |
---|
| 2524 | ///It runs in time <em>O(m</em>log<em>D)</em>, where <em>m</em> is |
---|
| 2525 | ///the number of the edges of \c n and <em>D</em> is the maximum |
---|
| 2526 | ///out-degree of the graph. |
---|
| 2527 | |
---|
| 2528 | void refresh() |
---|
| 2529 | { |
---|
| 2530 | for(NodeIt n(_g);n!=INVALID;++n) refresh(n); |
---|
| 2531 | } |
---|
| 2532 | |
---|
| 2533 | ///Find an edge between two nodes. |
---|
| 2534 | |
---|
| 2535 | ///Find an edge between two nodes in time <em>O(</em>log<em>d)</em>, where |
---|
| 2536 | /// <em>d</em> is the number of outgoing edges of \c s. |
---|
| 2537 | ///\param s The source node |
---|
| 2538 | ///\param t The target node |
---|
| 2539 | ///\return An edge from \c s to \c t if there exists, |
---|
| 2540 | ///\ref INVALID otherwise. |
---|
| 2541 | /// |
---|
| 2542 | ///\warning If you change the graph, refresh() must be called before using |
---|
| 2543 | ///this operator. If you change the outgoing edges of |
---|
| 2544 | ///a single node \c n, then |
---|
| 2545 | ///\ref refresh(Node) "refresh(n)" is enough. |
---|
| 2546 | /// |
---|
| 2547 | Edge operator()(Node s, Node t) const |
---|
| 2548 | { |
---|
| 2549 | Edge e; |
---|
| 2550 | for(e=_head[s]; |
---|
| 2551 | e!=INVALID&&_g.target(e)!=t; |
---|
| 2552 | e = t < _g.target(e)?_left[e]:_right[e]) ; |
---|
| 2553 | return e; |
---|
| 2554 | } |
---|
| 2555 | |
---|
| 2556 | }; |
---|
| 2557 | |
---|
| 2558 | ///Fast look up of all edges between given endpoints. |
---|
| 2559 | |
---|
| 2560 | ///\ingroup gutils |
---|
| 2561 | ///This class is the same as \ref EdgeLookUp, with the addition |
---|
| 2562 | ///that it makes it possible to find all edges between given endpoints. |
---|
| 2563 | /// |
---|
| 2564 | ///\warning This class is static, so you should refresh() (or at least |
---|
| 2565 | ///refresh(Node)) this data structure |
---|
| 2566 | ///whenever the graph changes. This is a time consuming (superlinearly |
---|
| 2567 | ///proportional (<em>O(m</em>log<em>m)</em>) to the number of edges). |
---|
| 2568 | /// |
---|
| 2569 | ///\param G The type of the underlying graph. |
---|
| 2570 | /// |
---|
| 2571 | ///\sa EdgeLookUp |
---|
| 2572 | template<class G> |
---|
| 2573 | class AllEdgeLookUp : public EdgeLookUp<G> |
---|
| 2574 | { |
---|
| 2575 | using EdgeLookUp<G>::_g; |
---|
| 2576 | using EdgeLookUp<G>::_right; |
---|
| 2577 | using EdgeLookUp<G>::_left; |
---|
| 2578 | using EdgeLookUp<G>::_head; |
---|
| 2579 | |
---|
| 2580 | GRAPH_TYPEDEFS(typename G) |
---|
| 2581 | typedef G Graph; |
---|
| 2582 | |
---|
| 2583 | typename Graph::template EdgeMap<Edge> _next; |
---|
| 2584 | |
---|
| 2585 | Edge refreshNext(Edge head,Edge next=INVALID) |
---|
| 2586 | { |
---|
| 2587 | if(head==INVALID) return next; |
---|
| 2588 | else { |
---|
| 2589 | next=refreshNext(_right[head],next); |
---|
| 2590 | // _next[head]=next; |
---|
| 2591 | _next[head]=( next!=INVALID && _g.target(next)==_g.target(head)) |
---|
| 2592 | ? next : INVALID; |
---|
| 2593 | return refreshNext(_left[head],head); |
---|
| 2594 | } |
---|
| 2595 | } |
---|
| 2596 | |
---|
| 2597 | void refreshNext() |
---|
| 2598 | { |
---|
| 2599 | for(NodeIt n(_g);n!=INVALID;++n) refreshNext(_head[n]); |
---|
| 2600 | } |
---|
| 2601 | |
---|
| 2602 | public: |
---|
| 2603 | ///Constructor |
---|
| 2604 | |
---|
| 2605 | ///Constructor. |
---|
| 2606 | /// |
---|
| 2607 | ///It builds up the search database, which remains valid until the graph |
---|
| 2608 | ///changes. |
---|
| 2609 | AllEdgeLookUp(const Graph &g) : EdgeLookUp<G>(g), _next(g) {refreshNext();} |
---|
| 2610 | |
---|
| 2611 | ///Refresh the data structure at a node. |
---|
| 2612 | |
---|
| 2613 | ///Build up the search database of node \c n. |
---|
| 2614 | /// |
---|
| 2615 | ///It runs in time <em>O(d</em>log<em>d)</em>, where <em>d</em> is |
---|
| 2616 | ///the number of the outgoing edges of \c n. |
---|
| 2617 | |
---|
| 2618 | void refresh(Node n) |
---|
| 2619 | { |
---|
| 2620 | EdgeLookUp<G>::refresh(n); |
---|
| 2621 | refreshNext(_head[n]); |
---|
| 2622 | } |
---|
| 2623 | |
---|
| 2624 | ///Refresh the full data structure. |
---|
| 2625 | |
---|
| 2626 | ///Build up the full search database. In fact, it simply calls |
---|
| 2627 | ///\ref refresh(Node) "refresh(n)" for each node \c n. |
---|
| 2628 | /// |
---|
| 2629 | ///It runs in time <em>O(m</em>log<em>D)</em>, where <em>m</em> is |
---|
| 2630 | ///the number of the edges of \c n and <em>D</em> is the maximum |
---|
| 2631 | ///out-degree of the graph. |
---|
| 2632 | |
---|
| 2633 | void refresh() |
---|
| 2634 | { |
---|
| 2635 | for(NodeIt n(_g);n!=INVALID;++n) refresh(_head[n]); |
---|
| 2636 | } |
---|
| 2637 | |
---|
| 2638 | ///Find an edge between two nodes. |
---|
| 2639 | |
---|
| 2640 | ///Find an edge between two nodes. |
---|
| 2641 | ///\param s The source node |
---|
| 2642 | ///\param t The target node |
---|
| 2643 | ///\param prev The previous edge between \c s and \c t. It it is INVALID or |
---|
| 2644 | ///not given, the operator finds the first appropriate edge. |
---|
| 2645 | ///\return An edge from \c s to \c t after \prev or |
---|
| 2646 | ///\ref INVALID if there is no more. |
---|
| 2647 | /// |
---|
| 2648 | ///For example, you can count the number of edges from \c u to \c v in the |
---|
| 2649 | ///following way. |
---|
| 2650 | ///\code |
---|
| 2651 | ///AllEdgeLookUp<ListGraph> ae(g); |
---|
| 2652 | ///... |
---|
| 2653 | ///int n=0; |
---|
| 2654 | ///for(Edge e=ae(u,v);e!=INVALID;e=ae(u,v,e)) n++; |
---|
| 2655 | ///\endcode |
---|
| 2656 | /// |
---|
| 2657 | ///Finding the first edge take <em>O(</em>log<em>d)</em> time, where |
---|
| 2658 | /// <em>d</em> is the number of outgoing edges of \c s. Then, the |
---|
| 2659 | ///consecutive edges are found in constant time. |
---|
| 2660 | /// |
---|
| 2661 | ///\warning If you change the graph, refresh() must be called before using |
---|
| 2662 | ///this operator. If you change the outgoing edges of |
---|
| 2663 | ///a single node \c n, then |
---|
| 2664 | ///\ref refresh(Node) "refresh(n)" is enough. |
---|
| 2665 | /// |
---|
| 2666 | #ifdef DOXYGEN |
---|
| 2667 | Edge operator()(Node s, Node t, Edge prev=INVALID) const {} |
---|
| 2668 | #else |
---|
| 2669 | using EdgeLookUp<G>::operator() ; |
---|
| 2670 | Edge operator()(Node s, Node t, Edge prev) const |
---|
| 2671 | { |
---|
| 2672 | return prev==INVALID?(*this)(s,t):_next[prev]; |
---|
| 2673 | } |
---|
| 2674 | #endif |
---|
| 2675 | |
---|
| 2676 | }; |
---|
| 2677 | |
---|
[1402] | 2678 | /// @} |
---|
| 2679 | |
---|
[947] | 2680 | } //END OF NAMESPACE LEMON |
---|
[946] | 2681 | |
---|
| 2682 | #endif |
---|