[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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| 31 | template <typename _Map> |
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| 32 | class IterableMapExtender : public _Map { |
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| 33 | public: |
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| 34 | |
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| 35 | typedef _Map Parent; |
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| 36 | typedef IterableMapExtender Map; |
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| 37 | |
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| 38 | |
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[1854] | 39 | typedef typename Parent::Graph Graph; |
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| 40 | typedef typename Parent::Key Item; |
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[1810] | 41 | |
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[1854] | 42 | typedef typename Parent::Key Key; |
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| 43 | typedef typename Parent::Value Value; |
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[1810] | 44 | |
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| 45 | class MapIt; |
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| 46 | class ConstMapIt; |
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| 47 | |
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| 48 | friend class MapIt; |
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| 49 | friend class ConstMapIt; |
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| 50 | |
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| 51 | protected: |
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| 52 | |
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| 53 | using Parent::getGraph; |
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| 54 | |
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| 55 | public: |
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| 56 | |
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| 57 | IterableMapExtender(const Graph& graph) : Parent(graph) {} |
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| 58 | |
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| 59 | IterableMapExtender(const Graph& graph, const Value& value) |
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| 60 | : Parent(graph, value) {} |
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| 61 | |
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| 62 | |
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| 63 | class MapIt : public ItemSetTraits<Graph, Item>::ItemIt { |
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| 64 | public: |
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| 65 | |
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| 66 | typedef typename ItemSetTraits<Graph, Item>::ItemIt Parent; |
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| 67 | |
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| 68 | typedef typename Map::Value Value; |
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| 69 | |
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| 70 | MapIt(Map& _map) : Parent(*_map.getGraph()), map(_map) {} |
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| 71 | |
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| 72 | typename MapTraits<Map>::ConstReturnValue operator*() const { |
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| 73 | return map[*this]; |
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| 74 | } |
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| 75 | |
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| 76 | typename MapTraits<Map>::ReturnValue operator*() { |
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| 77 | return map[*this]; |
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| 78 | } |
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| 79 | |
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| 80 | void set(const Value& value) { |
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| 81 | map.set(*this, value); |
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| 82 | } |
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| 83 | |
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| 84 | protected: |
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| 85 | Map& map; |
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| 86 | |
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| 87 | }; |
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| 88 | |
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| 89 | class ConstMapIt : public ItemSetTraits<Graph, Key>::ItemIt { |
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| 90 | public: |
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| 91 | |
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| 92 | typedef typename ItemSetTraits<Graph, Key>::ItemIt Parent; |
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| 93 | |
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| 94 | typedef typename Map::Value Value; |
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| 95 | |
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| 96 | ConstMapIt(const Map& _map) : Parent(*_map.getGraph()), map(_map) {} |
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| 97 | |
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| 98 | typename MapTraits<Map>::ConstReturnValue operator*() const { |
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| 99 | return map[*this]; |
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| 100 | } |
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| 101 | protected: |
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| 102 | const Map& map; |
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| 103 | }; |
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| 104 | |
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| 105 | class ItemIt : public ItemSetTraits<Graph, Key>::ItemIt { |
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| 106 | public: |
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| 107 | |
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| 108 | typedef typename ItemSetTraits<Graph, Key>::ItemIt Parent; |
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| 109 | |
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| 110 | ItemIt(Map& _map) : Parent(*_map.getGraph()) {} |
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| 111 | |
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| 112 | }; |
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| 113 | }; |
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| 114 | |
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| 115 | } |
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| 116 | |
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| 117 | #endif |
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