[1810] | 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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| 7 | * (Egervary Research Group on Combinatorial Optimization, EGRES). |
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[1810] | 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_BITS_MAP_EXTENDER_H |
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| 20 | #define LEMON_BITS_MAP_EXTENDER_H |
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| 21 | |
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| 22 | #include <iterator> |
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| 23 | |
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[1993] | 24 | #include <lemon/bits/traits.h> |
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[1810] | 25 | |
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| 26 | ///\file |
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| 27 | ///\brief Extenders for iterable maps. |
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| 28 | |
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| 29 | namespace lemon { |
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| 30 | |
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[1996] | 31 | /// \ingroup graphbits |
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[1999] | 32 | /// |
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| 33 | /// \brief Extender for maps |
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[1810] | 34 | template <typename _Map> |
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[1999] | 35 | class MapExtender : public _Map { |
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[1810] | 36 | public: |
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| 37 | |
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| 38 | typedef _Map Parent; |
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[1999] | 39 | typedef MapExtender Map; |
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[1810] | 40 | |
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| 41 | |
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[1854] | 42 | typedef typename Parent::Graph Graph; |
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| 43 | typedef typename Parent::Key Item; |
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[1810] | 44 | |
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[1854] | 45 | typedef typename Parent::Key Key; |
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| 46 | typedef typename Parent::Value Value; |
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[1810] | 47 | |
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| 48 | class MapIt; |
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| 49 | class ConstMapIt; |
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| 50 | |
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| 51 | friend class MapIt; |
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| 52 | friend class ConstMapIt; |
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| 53 | |
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| 54 | public: |
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| 55 | |
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[1999] | 56 | MapExtender(const Graph& graph) |
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| 57 | : Parent(graph) {} |
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[1810] | 58 | |
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[1999] | 59 | MapExtender(const Graph& graph, const Value& value) |
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[1810] | 60 | : Parent(graph, value) {} |
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| 61 | |
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| 62 | |
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[1999] | 63 | class MapIt : public Item { |
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[1810] | 64 | public: |
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| 65 | |
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[1999] | 66 | typedef Item Parent; |
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[1810] | 67 | typedef typename Map::Value Value; |
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| 68 | |
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[1999] | 69 | MapIt() {} |
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| 70 | |
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| 71 | MapIt(Invalid i) : Parent(i) { } |
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| 72 | |
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| 73 | explicit MapIt(Map& _map) : map(_map) { |
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| 74 | map.getNotifier()->first(*this); |
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| 75 | } |
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| 76 | |
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| 77 | MapIt(const Map& _map, const Item& item) |
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| 78 | : Parent(item), map(_map) {} |
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| 79 | |
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| 80 | MapIt& operator++() { |
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| 81 | map.getNotifier()->next(*this); |
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| 82 | return *this; |
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| 83 | } |
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[1810] | 84 | |
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| 85 | typename MapTraits<Map>::ConstReturnValue operator*() const { |
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| 86 | return map[*this]; |
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| 87 | } |
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| 88 | |
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| 89 | typename MapTraits<Map>::ReturnValue operator*() { |
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| 90 | return map[*this]; |
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| 91 | } |
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| 92 | |
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| 93 | void set(const Value& value) { |
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| 94 | map.set(*this, value); |
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| 95 | } |
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| 96 | |
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| 97 | protected: |
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| 98 | Map& map; |
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| 99 | |
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| 100 | }; |
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| 101 | |
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[1999] | 102 | class ConstMapIt : public Item { |
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[1810] | 103 | public: |
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| 104 | |
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[1999] | 105 | typedef Item Parent; |
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[1810] | 106 | |
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| 107 | typedef typename Map::Value Value; |
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[1999] | 108 | |
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| 109 | ConstMapIt() {} |
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[1810] | 110 | |
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[1999] | 111 | ConstMapIt(Invalid i) : Parent(i) { } |
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| 112 | |
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| 113 | explicit ConstMapIt(Map& _map) : map(_map) { |
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| 114 | map.getNotifier()->first(*this); |
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| 115 | } |
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| 116 | |
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| 117 | ConstMapIt(const Map& _map, const Item& item) |
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| 118 | : Parent(item), map(_map) {} |
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| 119 | |
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| 120 | ConstMapIt& operator++() { |
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| 121 | map.getNotifier()->next(*this); |
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| 122 | return *this; |
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| 123 | } |
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[1810] | 124 | |
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| 125 | typename MapTraits<Map>::ConstReturnValue operator*() const { |
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| 126 | return map[*this]; |
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| 127 | } |
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[1999] | 128 | |
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[1810] | 129 | protected: |
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| 130 | const Map& map; |
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| 131 | }; |
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| 132 | |
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[1999] | 133 | class ItemIt : Item { |
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[1810] | 134 | public: |
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| 135 | |
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[1999] | 136 | typedef Item Parent; |
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| 137 | |
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| 138 | ItemIt() {} |
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[1810] | 139 | |
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[1999] | 140 | ItemIt(Invalid i) : Parent(i) { } |
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| 141 | |
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| 142 | explicit ItemIt(Map& _map) : map(_map) { |
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| 143 | map->getNotifier()->first(*this); |
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| 144 | } |
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| 145 | |
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| 146 | ItemIt(const Map& _map, const Item& item) |
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| 147 | : Parent(item), map(_map) {} |
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| 148 | |
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| 149 | ItemIt& operator++() { |
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| 150 | map.getNotifier()->next(*this); |
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| 151 | return *this; |
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| 152 | } |
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| 153 | |
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| 154 | protected: |
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| 155 | const Map& map; |
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[1810] | 156 | |
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| 157 | }; |
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| 158 | }; |
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| 159 | |
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| 160 | } |
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| 161 | |
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| 162 | #endif |
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