[906] | 1 | /* -*- C++ -*- |
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[1435] | 2 | * lemon/maps.h - Part of LEMON, a generic C++ optimization library |
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[906] | 3 | * |
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[1164] | 4 | * Copyright (C) 2005 Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
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[1359] | 5 | * (Egervary Research Group on Combinatorial Optimization, EGRES). |
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[906] | 6 | * |
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| 7 | * Permission to use, modify and distribute this software is granted |
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| 8 | * provided that this copyright notice appears in all copies. For |
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| 9 | * precise terms see the accompanying LICENSE file. |
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| 10 | * |
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| 11 | * This software is provided "AS IS" with no warranty of any kind, |
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| 12 | * express or implied, and with no claim as to its suitability for any |
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| 13 | * purpose. |
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| 14 | * |
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| 15 | */ |
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| 16 | |
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[921] | 17 | #ifndef LEMON_MAPS_H |
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| 18 | #define LEMON_MAPS_H |
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[286] | 19 | |
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[1420] | 20 | #include <lemon/utility.h> |
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| 21 | |
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[1041] | 22 | |
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[286] | 23 | ///\file |
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[1041] | 24 | ///\ingroup maps |
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[286] | 25 | ///\brief Miscellaneous property maps |
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| 26 | /// |
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[959] | 27 | ///\todo This file has the same name as the concept file in concept/, |
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[286] | 28 | /// and this is not easily detectable in docs... |
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| 29 | |
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| 30 | #include <map> |
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| 31 | |
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[921] | 32 | namespace lemon { |
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[286] | 33 | |
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[1041] | 34 | /// \addtogroup maps |
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| 35 | /// @{ |
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| 36 | |
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[720] | 37 | /// Base class of maps. |
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| 38 | |
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[805] | 39 | /// Base class of maps. |
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| 40 | /// It provides the necessary <tt>typedef</tt>s required by the map concept. |
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[1675] | 41 | template<typename K, typename T, typename _NeedCopy = False> |
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| 42 | class MapBase { |
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[720] | 43 | public: |
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[1675] | 44 | /// \e |
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| 45 | typedef _NeedCopy NeedCopy; |
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[911] | 46 | ///\e |
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[987] | 47 | typedef K Key; |
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[911] | 48 | ///\e |
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[987] | 49 | typedef T Value; |
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[720] | 50 | }; |
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| 51 | |
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[805] | 52 | /// Null map. (a.k.a. DoNothingMap) |
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[286] | 53 | |
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| 54 | /// If you have to provide a map only for its type definitions, |
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[805] | 55 | /// or if you have to provide a writable map, but |
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| 56 | /// data written to it will sent to <tt>/dev/null</tt>... |
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[1675] | 57 | template<typename K, typename T, typename NC = False> |
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| 58 | class NullMap : public MapBase<K, T, NC> { |
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[286] | 59 | public: |
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[1675] | 60 | typedef MapBase<K, T, NC> Parent; |
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| 61 | typedef typename Parent::Key Key; |
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| 62 | typedef typename Parent::Value Value; |
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[1420] | 63 | |
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[805] | 64 | /// Gives back a default constructed element. |
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[286] | 65 | T operator[](const K&) const { return T(); } |
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[805] | 66 | /// Absorbs the value. |
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[286] | 67 | void set(const K&, const T&) {} |
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| 68 | }; |
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| 69 | |
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[1420] | 70 | template <typename K, typename V> |
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[1675] | 71 | NullMap<K, V, True> nullMap() { |
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| 72 | return NullMap<K, V, True>(); |
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[1420] | 73 | } |
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| 74 | |
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[286] | 75 | |
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| 76 | /// Constant map. |
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| 77 | |
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[805] | 78 | /// This is a readable map which assigns a specified value to each key. |
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| 79 | /// In other aspects it is equivalent to the \ref NullMap. |
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| 80 | /// \todo set could be used to set the value. |
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[1675] | 81 | template<typename K, typename T, typename NC = False> |
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| 82 | class ConstMap : public MapBase<K, T, NC> { |
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| 83 | private: |
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[286] | 84 | T v; |
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| 85 | public: |
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| 86 | |
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[1675] | 87 | typedef MapBase<K, T, NC> Parent; |
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| 88 | typedef typename Parent::Key Key; |
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| 89 | typedef typename Parent::Value Value; |
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[1420] | 90 | |
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[805] | 91 | /// Default constructor |
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| 92 | |
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| 93 | /// The value of the map will be uninitialized. |
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| 94 | /// (More exactly it will be default constructed.) |
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[286] | 95 | ConstMap() {} |
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[911] | 96 | ///\e |
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[805] | 97 | |
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| 98 | /// \param _v The initial value of the map. |
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[911] | 99 | /// |
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[286] | 100 | ConstMap(const T &_v) : v(_v) {} |
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| 101 | |
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| 102 | T operator[](const K&) const { return v; } |
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| 103 | void set(const K&, const T&) {} |
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| 104 | |
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| 105 | template<typename T1> |
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| 106 | struct rebind { |
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[1675] | 107 | typedef ConstMap<K, T1> other; |
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[286] | 108 | }; |
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| 109 | |
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| 110 | template<typename T1> |
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[1675] | 111 | ConstMap(const ConstMap<K, T1> &, const T &_v) : v(_v) {} |
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[286] | 112 | }; |
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| 113 | |
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[1076] | 114 | ///Returns a \ref ConstMap class |
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| 115 | |
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| 116 | ///This function just returns a \ref ConstMap class. |
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| 117 | ///\relates ConstMap |
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[1675] | 118 | template<typename K, typename V> |
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| 119 | inline ConstMap<K, V, True> constMap(const V &v) { |
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| 120 | return ConstMap<K, V, True>(v); |
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[1076] | 121 | } |
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| 122 | |
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| 123 | |
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[1660] | 124 | //\todo to document later |
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[890] | 125 | template<typename T, T v> |
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| 126 | struct Const { }; |
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[1675] | 127 | |
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[1660] | 128 | //\todo to document later |
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[1675] | 129 | template<typename K, typename V, V v, typename NC> |
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| 130 | class ConstMap<K, Const<V, v>, NC > : public MapBase<K, V, NC> { |
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[890] | 131 | public: |
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[1675] | 132 | typedef MapBase<K, V, False> Parent; |
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| 133 | typedef typename Parent::Key Key; |
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| 134 | typedef typename Parent::Value Value; |
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| 135 | |
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[890] | 136 | ConstMap() { } |
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| 137 | V operator[](const K&) const { return v; } |
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| 138 | void set(const K&, const V&) { } |
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| 139 | }; |
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[286] | 140 | |
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[1675] | 141 | ///Returns a \ref ConstMap class |
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| 142 | |
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| 143 | ///This function just returns a \ref ConstMap class. |
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| 144 | ///\relates ConstMap |
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| 145 | template<typename K, typename V, V v> |
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| 146 | inline ConstMap<K, Const<V, v>, True> constMap() { |
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| 147 | return ConstMap<K, Const<V, v>, True>(); |
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| 148 | } |
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| 149 | |
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[286] | 150 | /// \c std::map wrapper |
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| 151 | |
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| 152 | /// This is essentially a wrapper for \c std::map. With addition that |
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[987] | 153 | /// you can specify a default value different from \c Value() . |
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[286] | 154 | /// |
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| 155 | /// \todo Provide allocator parameter... |
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[987] | 156 | template <typename K, typename T, typename Compare = std::less<K> > |
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[1675] | 157 | class StdMap : public std::map<K, T, Compare> { |
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| 158 | typedef std::map<K, T, Compare> parent; |
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[286] | 159 | T v; |
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| 160 | typedef typename parent::value_type PairType; |
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| 161 | |
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| 162 | public: |
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[1456] | 163 | ///\e |
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[987] | 164 | typedef K Key; |
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[1456] | 165 | ///\e |
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[987] | 166 | typedef T Value; |
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[1456] | 167 | ///\e |
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[987] | 168 | typedef T& Reference; |
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[1456] | 169 | ///\e |
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[987] | 170 | typedef const T& ConstReference; |
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[286] | 171 | |
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| 172 | |
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[345] | 173 | StdMap() : v() {} |
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[286] | 174 | /// Constructor with specified default value |
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| 175 | StdMap(const T& _v) : v(_v) {} |
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| 176 | |
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| 177 | /// \brief Constructs the map from an appropriate std::map. |
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| 178 | /// |
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| 179 | /// \warning Inefficient: copies the content of \c m ! |
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| 180 | StdMap(const parent &m) : parent(m) {} |
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| 181 | /// \brief Constructs the map from an appropriate std::map, and explicitly |
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| 182 | /// specifies a default value. |
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| 183 | /// |
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| 184 | /// \warning Inefficient: copies the content of \c m ! |
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| 185 | StdMap(const parent &m, const T& _v) : parent(m), v(_v) {} |
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| 186 | |
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| 187 | template<typename T1, typename Comp1> |
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[1675] | 188 | StdMap(const StdMap<Key, T1,Comp1> &m, const T &_v) { |
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[389] | 189 | //FIXME; |
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| 190 | } |
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[286] | 191 | |
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[987] | 192 | Reference operator[](const Key &k) { |
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[346] | 193 | return insert(PairType(k,v)).first -> second; |
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[286] | 194 | } |
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[1675] | 195 | |
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[987] | 196 | ConstReference operator[](const Key &k) const { |
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[389] | 197 | typename parent::iterator i = lower_bound(k); |
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[391] | 198 | if (i == parent::end() || parent::key_comp()(k, (*i).first)) |
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[286] | 199 | return v; |
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| 200 | return (*i).second; |
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| 201 | } |
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[345] | 202 | void set(const Key &k, const T &t) { |
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[346] | 203 | parent::operator[](k) = t; |
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[345] | 204 | } |
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[286] | 205 | |
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| 206 | /// Changes the default value of the map. |
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| 207 | /// \return Returns the previous default value. |
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| 208 | /// |
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[805] | 209 | /// \warning The value of some keys (which has already been queried, but |
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[286] | 210 | /// the value has been unchanged from the default) may change! |
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| 211 | T setDefault(const T &_v) { T old=v; v=_v; return old; } |
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| 212 | |
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| 213 | template<typename T1> |
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| 214 | struct rebind { |
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[1675] | 215 | typedef StdMap<Key, T1,Compare> other; |
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[286] | 216 | }; |
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| 217 | }; |
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[1041] | 218 | |
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[1402] | 219 | /// @} |
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| 220 | |
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| 221 | /// \addtogroup map_adaptors |
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| 222 | /// @{ |
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| 223 | |
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[1531] | 224 | /// \brief Identity mapping. |
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| 225 | /// |
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| 226 | /// This mapping gives back the given key as value without any |
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| 227 | /// modification. |
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[1675] | 228 | template <typename T, typename NC = False> |
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| 229 | class IdentityMap : public MapBase<T, T, NC> { |
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[1531] | 230 | public: |
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[1675] | 231 | typedef MapBase<T, T, NC> Parent; |
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| 232 | typedef typename Parent::Key Key; |
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| 233 | typedef typename Parent::Value Value; |
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[1531] | 234 | |
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[1675] | 235 | const T& operator[](const T& t) const { |
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[1531] | 236 | return t; |
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| 237 | } |
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| 238 | }; |
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[1402] | 239 | |
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[1675] | 240 | ///Returns an \ref IdentityMap class |
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| 241 | |
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| 242 | ///This function just returns an \ref IdentityMap class. |
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| 243 | ///\relates IdentityMap |
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| 244 | template<typename T> |
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| 245 | inline IdentityMap<T, True> identityMap() { |
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| 246 | return IdentityMap<T, True>(); |
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| 247 | } |
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| 248 | |
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| 249 | |
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[1547] | 250 | ///Convert the \c Value of a map to another type. |
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[1178] | 251 | |
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| 252 | ///This \ref concept::ReadMap "read only map" |
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| 253 | ///converts the \c Value of a maps to type \c T. |
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[1547] | 254 | ///Its \c Key is inherited from \c M. |
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[1675] | 255 | template <typename M, typename T, typename NC = False> |
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| 256 | class ConvertMap : public MapBase<typename M::Key, T, NC> { |
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[1420] | 257 | typename SmartConstReference<M>::Type m; |
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[1178] | 258 | public: |
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[1675] | 259 | typedef MapBase<typename M::Key, T, NC> Parent; |
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| 260 | typedef typename Parent::Key Key; |
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| 261 | typedef typename Parent::Value Value; |
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[1178] | 262 | |
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| 263 | ///Constructor |
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| 264 | |
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| 265 | ///Constructor |
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[1536] | 266 | ///\param _m is the underlying map |
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[1178] | 267 | ConvertMap(const M &_m) : m(_m) {}; |
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[1346] | 268 | |
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| 269 | /// \brief The subscript operator. |
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| 270 | /// |
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| 271 | /// The subscript operator. |
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[1536] | 272 | /// \param k The key |
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[1346] | 273 | /// \return The target of the edge |
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[1675] | 274 | Value operator[](const Key& k) const {return m[k];} |
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[1178] | 275 | }; |
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| 276 | |
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| 277 | ///Returns an \ref ConvertMap class |
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| 278 | |
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| 279 | ///This function just returns an \ref ConvertMap class. |
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| 280 | ///\relates ConvertMap |
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| 281 | ///\todo The order of the template parameters are changed. |
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[1675] | 282 | template<typename T, typename M> |
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| 283 | inline ConvertMap<M, T, True> convertMap(const M &m) { |
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| 284 | return ConvertMap<M, T, True>(m); |
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[1178] | 285 | } |
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[1041] | 286 | |
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| 287 | ///Sum of two maps |
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| 288 | |
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| 289 | ///This \ref concept::ReadMap "read only map" returns the sum of the two |
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| 290 | ///given maps. Its \c Key and \c Value will be inherited from \c M1. |
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| 291 | ///The \c Key and \c Value of M2 must be convertible to those of \c M1. |
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| 292 | |
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[1675] | 293 | template<typename M1, typename M2, typename NC = False> |
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| 294 | class AddMap : public MapBase<typename M1::Key, typename M1::Value, NC> { |
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[1420] | 295 | typename SmartConstReference<M1>::Type m1; |
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| 296 | typename SmartConstReference<M2>::Type m2; |
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| 297 | |
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[1041] | 298 | public: |
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[1675] | 299 | typedef MapBase<typename M1::Key, typename M1::Value, NC> Parent; |
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| 300 | typedef typename Parent::Key Key; |
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| 301 | typedef typename Parent::Value Value; |
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[1041] | 302 | |
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| 303 | ///Constructor |
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| 304 | AddMap(const M1 &_m1,const M2 &_m2) : m1(_m1), m2(_m2) {}; |
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[1044] | 305 | Value operator[](Key k) const {return m1[k]+m2[k];} |
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[1041] | 306 | }; |
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| 307 | |
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| 308 | ///Returns an \ref AddMap class |
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| 309 | |
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| 310 | ///This function just returns an \ref AddMap class. |
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| 311 | ///\todo How to call these type of functions? |
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| 312 | /// |
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| 313 | ///\relates AddMap |
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| 314 | ///\todo Wrong scope in Doxygen when \c \\relates is used |
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[1675] | 315 | template<typename M1, typename M2> |
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| 316 | inline AddMap<M1, M2, True> addMap(const M1 &m1,const M2 &m2) { |
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| 317 | return AddMap<M1, M2, True>(m1,m2); |
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[1041] | 318 | } |
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| 319 | |
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[1547] | 320 | ///Shift a map with a constant. |
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[1070] | 321 | |
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| 322 | ///This \ref concept::ReadMap "read only map" returns the sum of the |
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| 323 | ///given map and a constant value. |
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| 324 | ///Its \c Key and \c Value is inherited from \c M. |
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| 325 | /// |
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| 326 | ///Actually, |
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| 327 | ///\code |
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| 328 | /// ShiftMap<X> sh(x,v); |
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| 329 | ///\endcode |
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[1547] | 330 | ///is equivalent with |
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[1070] | 331 | ///\code |
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| 332 | /// ConstMap<X::Key, X::Value> c_tmp(v); |
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| 333 | /// AddMap<X, ConstMap<X::Key, X::Value> > sh(x,v); |
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| 334 | ///\endcode |
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[1691] | 335 | template<typename M, typename C = typename M::Value, typename NC = False> |
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[1675] | 336 | class ShiftMap : public MapBase<typename M::Key, typename M::Value, NC> { |
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[1420] | 337 | typename SmartConstReference<M>::Type m; |
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[1691] | 338 | C v; |
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[1070] | 339 | public: |
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[1675] | 340 | typedef MapBase<typename M::Key, typename M::Value, NC> Parent; |
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| 341 | typedef typename Parent::Key Key; |
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| 342 | typedef typename Parent::Value Value; |
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[1070] | 343 | |
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| 344 | ///Constructor |
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| 345 | |
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| 346 | ///Constructor |
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| 347 | ///\param _m is the undelying map |
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| 348 | ///\param _v is the shift value |
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[1691] | 349 | ShiftMap(const M &_m, const C &_v ) : m(_m), v(_v) {}; |
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| 350 | Value operator[](Key k) const {return m[k] + v;} |
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[1070] | 351 | }; |
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| 352 | |
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| 353 | ///Returns an \ref ShiftMap class |
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| 354 | |
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| 355 | ///This function just returns an \ref ShiftMap class. |
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| 356 | ///\relates ShiftMap |
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| 357 | ///\todo A better name is required. |
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[1691] | 358 | template<typename M, typename C> |
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| 359 | inline ShiftMap<M, C, True> shiftMap(const M &m,const C &v) { |
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| 360 | return ShiftMap<M, C, True>(m,v); |
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[1070] | 361 | } |
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| 362 | |
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[1041] | 363 | ///Difference of two maps |
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| 364 | |
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| 365 | ///This \ref concept::ReadMap "read only map" returns the difference |
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[1547] | 366 | ///of the values of the two |
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[1041] | 367 | ///given maps. Its \c Key and \c Value will be inherited from \c M1. |
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| 368 | ///The \c Key and \c Value of \c M2 must be convertible to those of \c M1. |
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| 369 | |
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[1675] | 370 | template<typename M1, typename M2, typename NC = False> |
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| 371 | class SubMap : public MapBase<typename M1::Key, typename M1::Value, NC> { |
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[1420] | 372 | typename SmartConstReference<M1>::Type m1; |
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| 373 | typename SmartConstReference<M2>::Type m2; |
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[1041] | 374 | public: |
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[1675] | 375 | typedef MapBase<typename M1::Key, typename M1::Value, NC> Parent; |
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| 376 | typedef typename Parent::Key Key; |
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| 377 | typedef typename Parent::Value Value; |
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[1041] | 378 | |
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| 379 | ///Constructor |
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| 380 | SubMap(const M1 &_m1,const M2 &_m2) : m1(_m1), m2(_m2) {}; |
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[1044] | 381 | Value operator[](Key k) const {return m1[k]-m2[k];} |
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[1041] | 382 | }; |
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| 383 | |
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| 384 | ///Returns a \ref SubMap class |
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| 385 | |
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| 386 | ///This function just returns a \ref SubMap class. |
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| 387 | /// |
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| 388 | ///\relates SubMap |
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[1675] | 389 | template<typename M1, typename M2> |
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| 390 | inline SubMap<M1, M2, True> subMap(const M1 &m1, const M2 &m2) { |
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| 391 | return SubMap<M1, M2, True>(m1, m2); |
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[1041] | 392 | } |
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| 393 | |
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| 394 | ///Product of two maps |
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| 395 | |
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| 396 | ///This \ref concept::ReadMap "read only map" returns the product of the |
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[1547] | 397 | ///values of the two |
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[1041] | 398 | ///given |
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| 399 | ///maps. Its \c Key and \c Value will be inherited from \c M1. |
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| 400 | ///The \c Key and \c Value of \c M2 must be convertible to those of \c M1. |
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| 401 | |
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[1675] | 402 | template<typename M1, typename M2, typename NC = False> |
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| 403 | class MulMap : public MapBase<typename M1::Key, typename M1::Value, NC> { |
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[1420] | 404 | typename SmartConstReference<M1>::Type m1; |
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| 405 | typename SmartConstReference<M2>::Type m2; |
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[1041] | 406 | public: |
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[1675] | 407 | typedef MapBase<typename M1::Key, typename M1::Value, NC> Parent; |
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| 408 | typedef typename Parent::Key Key; |
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| 409 | typedef typename Parent::Value Value; |
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[1041] | 410 | |
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| 411 | ///Constructor |
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| 412 | MulMap(const M1 &_m1,const M2 &_m2) : m1(_m1), m2(_m2) {}; |
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[1044] | 413 | Value operator[](Key k) const {return m1[k]*m2[k];} |
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[1041] | 414 | }; |
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| 415 | |
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| 416 | ///Returns a \ref MulMap class |
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| 417 | |
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| 418 | ///This function just returns a \ref MulMap class. |
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| 419 | ///\relates MulMap |
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[1675] | 420 | template<typename M1, typename M2> |
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| 421 | inline MulMap<M1, M2, True> mulMap(const M1 &m1,const M2 &m2) { |
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| 422 | return MulMap<M1, M2, True>(m1,m2); |
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[1041] | 423 | } |
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| 424 | |
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[1547] | 425 | ///Scales a maps with a constant. |
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[1070] | 426 | |
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| 427 | ///This \ref concept::ReadMap "read only map" returns the value of the |
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[1691] | 428 | ///given map multiplied from the left side with a constant value. |
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[1070] | 429 | ///Its \c Key and \c Value is inherited from \c M. |
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| 430 | /// |
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| 431 | ///Actually, |
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| 432 | ///\code |
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| 433 | /// ScaleMap<X> sc(x,v); |
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| 434 | ///\endcode |
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[1547] | 435 | ///is equivalent with |
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[1070] | 436 | ///\code |
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| 437 | /// ConstMap<X::Key, X::Value> c_tmp(v); |
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| 438 | /// MulMap<X, ConstMap<X::Key, X::Value> > sc(x,v); |
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| 439 | ///\endcode |
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[1691] | 440 | template<typename M, typename C = typename M::Value, typename NC = False> |
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[1675] | 441 | class ScaleMap : public MapBase<typename M::Key, typename M::Value, NC> { |
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[1420] | 442 | typename SmartConstReference<M>::Type m; |
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[1691] | 443 | C v; |
---|
[1070] | 444 | public: |
---|
[1675] | 445 | typedef MapBase<typename M::Key, typename M::Value, NC> Parent; |
---|
| 446 | typedef typename Parent::Key Key; |
---|
| 447 | typedef typename Parent::Value Value; |
---|
[1070] | 448 | |
---|
| 449 | ///Constructor |
---|
| 450 | |
---|
| 451 | ///Constructor |
---|
| 452 | ///\param _m is the undelying map |
---|
| 453 | ///\param _v is the scaling value |
---|
[1691] | 454 | ScaleMap(const M &_m, const C &_v ) : m(_m), v(_v) {}; |
---|
| 455 | Value operator[](Key k) const {return v * m[k];} |
---|
[1070] | 456 | }; |
---|
| 457 | |
---|
| 458 | ///Returns an \ref ScaleMap class |
---|
| 459 | |
---|
| 460 | ///This function just returns an \ref ScaleMap class. |
---|
| 461 | ///\relates ScaleMap |
---|
| 462 | ///\todo A better name is required. |
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[1691] | 463 | template<typename M, typename C> |
---|
| 464 | inline ScaleMap<M, C, True> scaleMap(const M &m,const C &v) { |
---|
| 465 | return ScaleMap<M, C, True>(m,v); |
---|
[1070] | 466 | } |
---|
| 467 | |
---|
[1041] | 468 | ///Quotient of two maps |
---|
| 469 | |
---|
| 470 | ///This \ref concept::ReadMap "read only map" returns the quotient of the |
---|
[1547] | 471 | ///values of the two |
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[1041] | 472 | ///given maps. Its \c Key and \c Value will be inherited from \c M1. |
---|
| 473 | ///The \c Key and \c Value of \c M2 must be convertible to those of \c M1. |
---|
| 474 | |
---|
[1675] | 475 | template<typename M1, typename M2, typename NC = False> |
---|
| 476 | class DivMap : public MapBase<typename M1::Key, typename M1::Value, NC> { |
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[1420] | 477 | typename SmartConstReference<M1>::Type m1; |
---|
| 478 | typename SmartConstReference<M2>::Type m2; |
---|
[1041] | 479 | public: |
---|
[1675] | 480 | typedef MapBase<typename M1::Key, typename M1::Value, NC> Parent; |
---|
| 481 | typedef typename Parent::Key Key; |
---|
| 482 | typedef typename Parent::Value Value; |
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[1041] | 483 | |
---|
| 484 | ///Constructor |
---|
| 485 | DivMap(const M1 &_m1,const M2 &_m2) : m1(_m1), m2(_m2) {}; |
---|
[1044] | 486 | Value operator[](Key k) const {return m1[k]/m2[k];} |
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[1041] | 487 | }; |
---|
| 488 | |
---|
| 489 | ///Returns a \ref DivMap class |
---|
| 490 | |
---|
| 491 | ///This function just returns a \ref DivMap class. |
---|
| 492 | ///\relates DivMap |
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[1675] | 493 | template<typename M1, typename M2> |
---|
| 494 | inline DivMap<M1, M2, True> divMap(const M1 &m1,const M2 &m2) { |
---|
| 495 | return DivMap<M1, M2, True>(m1,m2); |
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[1041] | 496 | } |
---|
| 497 | |
---|
| 498 | ///Composition of two maps |
---|
| 499 | |
---|
| 500 | ///This \ref concept::ReadMap "read only map" returns the composition of |
---|
| 501 | ///two |
---|
| 502 | ///given maps. That is to say, if \c m1 is of type \c M1 and \c m2 is |
---|
| 503 | ///of \c M2, |
---|
| 504 | ///then for |
---|
| 505 | ///\code |
---|
[1675] | 506 | /// ComposeMap<M1, M2> cm(m1,m2); |
---|
[1041] | 507 | ///\endcode |
---|
[1044] | 508 | /// <tt>cm[x]</tt> will be equal to <tt>m1[m2[x]]</tt> |
---|
[1041] | 509 | /// |
---|
| 510 | ///Its \c Key is inherited from \c M2 and its \c Value is from |
---|
| 511 | ///\c M1. |
---|
| 512 | ///The \c M2::Value must be convertible to \c M1::Key. |
---|
| 513 | ///\todo Check the requirements. |
---|
| 514 | |
---|
[1675] | 515 | template <typename M1, typename M2, typename NC = False> |
---|
| 516 | class ComposeMap : public MapBase<typename M2::Key, typename M1::Value, NC> { |
---|
[1420] | 517 | typename SmartConstReference<M1>::Type m1; |
---|
| 518 | typename SmartConstReference<M2>::Type m2; |
---|
[1041] | 519 | public: |
---|
[1675] | 520 | typedef MapBase<typename M2::Key, typename M1::Value, NC> Parent; |
---|
| 521 | typedef typename Parent::Key Key; |
---|
| 522 | typedef typename Parent::Value Value; |
---|
[1041] | 523 | |
---|
| 524 | ///Constructor |
---|
| 525 | ComposeMap(const M1 &_m1,const M2 &_m2) : m1(_m1), m2(_m2) {}; |
---|
[1044] | 526 | Value operator[](Key k) const {return m1[m2[k]];} |
---|
[1041] | 527 | }; |
---|
| 528 | ///Returns a \ref ComposeMap class |
---|
| 529 | |
---|
| 530 | ///This function just returns a \ref ComposeMap class. |
---|
[1219] | 531 | /// |
---|
[1041] | 532 | ///\relates ComposeMap |
---|
[1675] | 533 | template <typename M1, typename M2> |
---|
| 534 | inline ComposeMap<M1, M2, True> composeMap(const M1 &m1,const M2 &m2) { |
---|
| 535 | return ComposeMap<M1, M2, True>(m1,m2); |
---|
[1041] | 536 | } |
---|
[1219] | 537 | |
---|
[1547] | 538 | ///Combines of two maps using an STL (binary) functor. |
---|
[1219] | 539 | |
---|
[1547] | 540 | ///Combines of two maps using an STL (binary) functor. |
---|
[1219] | 541 | /// |
---|
| 542 | /// |
---|
[1547] | 543 | ///This \ref concept::ReadMap "read only map" takes two maps and a |
---|
[1219] | 544 | ///binary functor and returns the composition of |
---|
[1547] | 545 | ///the two |
---|
[1219] | 546 | ///given maps unsing the functor. |
---|
| 547 | ///That is to say, if \c m1 and \c m2 is of type \c M1 and \c M2 |
---|
| 548 | ///and \c f is of \c F, |
---|
| 549 | ///then for |
---|
| 550 | ///\code |
---|
[1675] | 551 | /// CombineMap<M1, M2,F,V> cm(m1,m2,f); |
---|
[1219] | 552 | ///\endcode |
---|
| 553 | /// <tt>cm[x]</tt> will be equal to <tt>f(m1[x],m2[x])</tt> |
---|
| 554 | /// |
---|
| 555 | ///Its \c Key is inherited from \c M1 and its \c Value is \c V. |
---|
| 556 | ///The \c M2::Value and \c M1::Value must be convertible to the corresponding |
---|
| 557 | ///input parameter of \c F and the return type of \c F must be convertible |
---|
| 558 | ///to \c V. |
---|
| 559 | ///\todo Check the requirements. |
---|
| 560 | |
---|
[1675] | 561 | template<typename M1, typename M2, typename F, |
---|
| 562 | typename V = typename F::result_type, |
---|
| 563 | typename NC = False> |
---|
| 564 | class CombineMap : public MapBase<typename M1::Key, V, NC> { |
---|
[1420] | 565 | typename SmartConstReference<M1>::Type m1; |
---|
| 566 | typename SmartConstReference<M2>::Type m2; |
---|
| 567 | F f; |
---|
[1219] | 568 | public: |
---|
[1675] | 569 | typedef MapBase<typename M1::Key, V, NC> Parent; |
---|
| 570 | typedef typename Parent::Key Key; |
---|
| 571 | typedef typename Parent::Value Value; |
---|
[1219] | 572 | |
---|
| 573 | ///Constructor |
---|
| 574 | CombineMap(const M1 &_m1,const M2 &_m2,const F &_f) |
---|
| 575 | : m1(_m1), m2(_m2), f(_f) {}; |
---|
| 576 | Value operator[](Key k) const {return f(m1[k],m2[k]);} |
---|
| 577 | }; |
---|
| 578 | |
---|
| 579 | ///Returns a \ref CombineMap class |
---|
| 580 | |
---|
| 581 | ///This function just returns a \ref CombineMap class. |
---|
| 582 | /// |
---|
| 583 | ///Only the first template parameter (the value type) must be given. |
---|
| 584 | /// |
---|
| 585 | ///For example if \c m1 and \c m2 are both \c double valued maps, then |
---|
| 586 | ///\code |
---|
| 587 | ///combineMap<double>(m1,m2,std::plus<double>) |
---|
| 588 | ///\endcode |
---|
| 589 | ///is equivalent with |
---|
| 590 | ///\code |
---|
| 591 | ///addMap(m1,m2) |
---|
| 592 | ///\endcode |
---|
| 593 | /// |
---|
| 594 | ///\relates CombineMap |
---|
[1675] | 595 | template<typename M1, typename M2, typename F, typename V> |
---|
| 596 | inline CombineMap<M1, M2, F, V, True> |
---|
| 597 | combineMap(const M1& m1,const M2& m2, const F& f) { |
---|
| 598 | return CombineMap<M1, M2, F, V, True>(m1,m2,f); |
---|
| 599 | } |
---|
| 600 | |
---|
| 601 | template<typename M1, typename M2, typename F> |
---|
| 602 | inline CombineMap<M1, M2, F, typename F::result_type, True> |
---|
| 603 | combineMap(const M1& m1, const M2& m2, const F& f) { |
---|
| 604 | return combineMap<M1, M2, F, typename F::result_type>(m1,m2,f); |
---|
| 605 | } |
---|
| 606 | |
---|
| 607 | template<typename M1, typename M2, typename K1, typename K2, typename V> |
---|
| 608 | inline CombineMap<M1, M2, V (*)(K1, K2), V, True> |
---|
| 609 | combineMap(const M1 &m1, const M2 &m2, V (*f)(K1, K2)) { |
---|
| 610 | return combineMap<M1, M2, V (*)(K1, K2), V>(m1,m2,f); |
---|
[1219] | 611 | } |
---|
[1041] | 612 | |
---|
| 613 | ///Negative value of a map |
---|
| 614 | |
---|
| 615 | ///This \ref concept::ReadMap "read only map" returns the negative |
---|
| 616 | ///value of the |
---|
| 617 | ///value returned by the |
---|
| 618 | ///given map. Its \c Key and \c Value will be inherited from \c M. |
---|
| 619 | ///The unary \c - operator must be defined for \c Value, of course. |
---|
| 620 | |
---|
[1675] | 621 | template<typename M, typename NC = False> |
---|
| 622 | class NegMap : public MapBase<typename M::Key, typename M::Value, NC> { |
---|
[1420] | 623 | typename SmartConstReference<M>::Type m; |
---|
[1041] | 624 | public: |
---|
[1675] | 625 | typedef MapBase<typename M::Key, typename M::Value, NC> Parent; |
---|
| 626 | typedef typename Parent::Key Key; |
---|
| 627 | typedef typename Parent::Value Value; |
---|
[1041] | 628 | |
---|
| 629 | ///Constructor |
---|
| 630 | NegMap(const M &_m) : m(_m) {}; |
---|
[1044] | 631 | Value operator[](Key k) const {return -m[k];} |
---|
[1041] | 632 | }; |
---|
| 633 | |
---|
| 634 | ///Returns a \ref NegMap class |
---|
| 635 | |
---|
| 636 | ///This function just returns a \ref NegMap class. |
---|
| 637 | ///\relates NegMap |
---|
[1675] | 638 | template <typename M> |
---|
| 639 | inline NegMap<M, True> negMap(const M &m) { |
---|
| 640 | return NegMap<M, True>(m); |
---|
[1041] | 641 | } |
---|
| 642 | |
---|
| 643 | |
---|
| 644 | ///Absolute value of a map |
---|
| 645 | |
---|
| 646 | ///This \ref concept::ReadMap "read only map" returns the absolute value |
---|
| 647 | ///of the |
---|
| 648 | ///value returned by the |
---|
[1044] | 649 | ///given map. Its \c Key and \c Value will be inherited |
---|
| 650 | ///from <tt>M</tt>. <tt>Value</tt> |
---|
| 651 | ///must be comparable to <tt>0</tt> and the unary <tt>-</tt> |
---|
| 652 | ///operator must be defined for it, of course. |
---|
| 653 | /// |
---|
| 654 | ///\bug We need a unified way to handle the situation below: |
---|
| 655 | ///\code |
---|
| 656 | /// struct _UnConvertible {}; |
---|
| 657 | /// template<class A> inline A t_abs(A a) {return _UnConvertible();} |
---|
| 658 | /// template<> inline int t_abs<>(int n) {return abs(n);} |
---|
| 659 | /// template<> inline long int t_abs<>(long int n) {return labs(n);} |
---|
| 660 | /// template<> inline long long int t_abs<>(long long int n) {return ::llabs(n);} |
---|
| 661 | /// template<> inline float t_abs<>(float n) {return fabsf(n);} |
---|
| 662 | /// template<> inline double t_abs<>(double n) {return fabs(n);} |
---|
| 663 | /// template<> inline long double t_abs<>(long double n) {return fabsl(n);} |
---|
| 664 | ///\endcode |
---|
| 665 | |
---|
[1041] | 666 | |
---|
[1675] | 667 | template<typename M, typename NC = False> |
---|
| 668 | class AbsMap : public MapBase<typename M::Key, typename M::Value, NC> { |
---|
[1420] | 669 | typename SmartConstReference<M>::Type m; |
---|
[1041] | 670 | public: |
---|
[1675] | 671 | typedef MapBase<typename M::Key, typename M::Value, NC> Parent; |
---|
| 672 | typedef typename Parent::Key Key; |
---|
| 673 | typedef typename Parent::Value Value; |
---|
[1041] | 674 | |
---|
| 675 | ///Constructor |
---|
| 676 | AbsMap(const M &_m) : m(_m) {}; |
---|
[1675] | 677 | Value operator[](Key k) const { |
---|
| 678 | Value tmp = m[k]; |
---|
| 679 | return tmp >= 0 ? tmp : -tmp; |
---|
| 680 | } |
---|
| 681 | |
---|
[1041] | 682 | }; |
---|
| 683 | |
---|
| 684 | ///Returns a \ref AbsMap class |
---|
| 685 | |
---|
| 686 | ///This function just returns a \ref AbsMap class. |
---|
| 687 | ///\relates AbsMap |
---|
[1675] | 688 | template<typename M> |
---|
| 689 | inline AbsMap<M, True> absMap(const M &m) { |
---|
| 690 | return AbsMap<M, True>(m); |
---|
[1041] | 691 | } |
---|
| 692 | |
---|
[1402] | 693 | ///Converts an STL style functor to a map |
---|
[1076] | 694 | |
---|
| 695 | ///This \ref concept::ReadMap "read only map" returns the value |
---|
| 696 | ///of a |
---|
| 697 | ///given map. |
---|
| 698 | /// |
---|
| 699 | ///Template parameters \c K and \c V will become its |
---|
| 700 | ///\c Key and \c Value. They must be given explicitely |
---|
| 701 | ///because a functor does not provide such typedefs. |
---|
| 702 | /// |
---|
| 703 | ///Parameter \c F is the type of the used functor. |
---|
| 704 | |
---|
| 705 | |
---|
[1675] | 706 | template<typename F, |
---|
| 707 | typename K = typename F::argument_type, |
---|
| 708 | typename V = typename F::result_type, |
---|
| 709 | typename NC = False> |
---|
| 710 | class FunctorMap : public MapBase<K, V, NC> { |
---|
[1679] | 711 | F f; |
---|
[1076] | 712 | public: |
---|
[1675] | 713 | typedef MapBase<K, V, NC> Parent; |
---|
| 714 | typedef typename Parent::Key Key; |
---|
| 715 | typedef typename Parent::Value Value; |
---|
[1076] | 716 | |
---|
| 717 | ///Constructor |
---|
[1679] | 718 | FunctorMap(const F &_f) : f(_f) {} |
---|
| 719 | |
---|
| 720 | Value operator[](Key k) const { return f(k);} |
---|
[1076] | 721 | }; |
---|
| 722 | |
---|
| 723 | ///Returns a \ref FunctorMap class |
---|
| 724 | |
---|
| 725 | ///This function just returns a \ref FunctorMap class. |
---|
| 726 | /// |
---|
| 727 | ///The third template parameter isn't necessary to be given. |
---|
| 728 | ///\relates FunctorMap |
---|
[1675] | 729 | template<typename K, typename V, typename F> inline |
---|
| 730 | FunctorMap<F, K, V, True> functorMap(const F &f) { |
---|
| 731 | return FunctorMap<F, K, V, True>(f); |
---|
[1076] | 732 | } |
---|
| 733 | |
---|
[1675] | 734 | template <typename F> inline |
---|
| 735 | FunctorMap<F, typename F::argument_type, typename F::result_type, True> |
---|
| 736 | functorMap(const F &f) { |
---|
[1679] | 737 | return FunctorMap<F, typename F::argument_type, |
---|
| 738 | typename F::result_type, True>(f); |
---|
[1675] | 739 | } |
---|
| 740 | |
---|
| 741 | template <typename K, typename V> inline |
---|
| 742 | FunctorMap<V (*)(K), K, V, True> functorMap(V (*f)(K)) { |
---|
[1679] | 743 | return FunctorMap<V (*)(K), K, V, True>(f); |
---|
[1675] | 744 | } |
---|
| 745 | |
---|
| 746 | |
---|
[1219] | 747 | ///Converts a map to an STL style (unary) functor |
---|
[1076] | 748 | |
---|
[1219] | 749 | ///This class Converts a map to an STL style (unary) functor. |
---|
[1076] | 750 | ///that is it provides an <tt>operator()</tt> to read its values. |
---|
| 751 | /// |
---|
[1223] | 752 | ///For the sake of convenience it also works as |
---|
[1537] | 753 | ///a ususal \ref concept::ReadMap "readable map", |
---|
| 754 | ///i.e. <tt>operator[]</tt> and the \c Key and \c Value typedefs also exist. |
---|
[1076] | 755 | |
---|
[1675] | 756 | template <typename M, typename NC = False> |
---|
| 757 | class MapFunctor : public MapBase<typename M::Key, typename M::Value, NC> { |
---|
[1420] | 758 | typename SmartConstReference<M>::Type m; |
---|
[1076] | 759 | public: |
---|
[1675] | 760 | typedef MapBase<typename M::Key, typename M::Value, NC> Parent; |
---|
| 761 | typedef typename Parent::Key Key; |
---|
| 762 | typedef typename Parent::Value Value; |
---|
[1420] | 763 | |
---|
[1456] | 764 | ///\e |
---|
[1223] | 765 | typedef typename M::Key argument_type; |
---|
[1456] | 766 | ///\e |
---|
[1223] | 767 | typedef typename M::Value result_type; |
---|
[1076] | 768 | |
---|
| 769 | ///Constructor |
---|
| 770 | MapFunctor(const M &_m) : m(_m) {}; |
---|
| 771 | ///Returns a value of the map |
---|
| 772 | Value operator()(Key k) const {return m[k];} |
---|
| 773 | ///\e |
---|
| 774 | Value operator[](Key k) const {return m[k];} |
---|
| 775 | }; |
---|
| 776 | |
---|
| 777 | ///Returns a \ref MapFunctor class |
---|
| 778 | |
---|
| 779 | ///This function just returns a \ref MapFunctor class. |
---|
| 780 | ///\relates MapFunctor |
---|
[1675] | 781 | template<typename M> |
---|
| 782 | inline MapFunctor<M, True> mapFunctor(const M &m) { |
---|
| 783 | return MapFunctor<M, True>(m); |
---|
[1076] | 784 | } |
---|
| 785 | |
---|
| 786 | |
---|
[1547] | 787 | ///Applies all map setting operations to two maps |
---|
[1219] | 788 | |
---|
| 789 | ///This map has two \ref concept::WriteMap "writable map" |
---|
| 790 | ///parameters and each write request will be passed to both of them. |
---|
| 791 | ///If \c M1 is also \ref concept::ReadMap "readable", |
---|
| 792 | ///then the read operations will return the |
---|
[1317] | 793 | ///corresponding values of \c M1. |
---|
[1219] | 794 | /// |
---|
| 795 | ///The \c Key and \c Value will be inherited from \c M1. |
---|
| 796 | ///The \c Key and \c Value of M2 must be convertible from those of \c M1. |
---|
| 797 | |
---|
[1675] | 798 | template<typename M1, typename M2, typename NC = False> |
---|
| 799 | class ForkMap : public MapBase<typename M1::Key, typename M1::Value, NC> { |
---|
[1420] | 800 | typename SmartConstReference<M1>::Type m1; |
---|
| 801 | typename SmartConstReference<M2>::Type m2; |
---|
[1219] | 802 | public: |
---|
[1675] | 803 | typedef MapBase<typename M1::Key, typename M1::Value, NC> Parent; |
---|
| 804 | typedef typename Parent::Key Key; |
---|
| 805 | typedef typename Parent::Value Value; |
---|
[1219] | 806 | |
---|
| 807 | ///Constructor |
---|
| 808 | ForkMap(const M1 &_m1,const M2 &_m2) : m1(_m1), m2(_m2) {}; |
---|
| 809 | Value operator[](Key k) const {return m1[k];} |
---|
[1675] | 810 | // void set(Key k, const Value &v) {m1.set(k,v); m2.set(k,v);} |
---|
[1219] | 811 | }; |
---|
| 812 | |
---|
| 813 | ///Returns an \ref ForkMap class |
---|
| 814 | |
---|
| 815 | ///This function just returns an \ref ForkMap class. |
---|
| 816 | ///\todo How to call these type of functions? |
---|
| 817 | /// |
---|
| 818 | ///\relates ForkMap |
---|
| 819 | ///\todo Wrong scope in Doxygen when \c \\relates is used |
---|
[1675] | 820 | template <typename M1, typename M2> |
---|
| 821 | inline ForkMap<M1, M2, True> forkMap(const M1 &m1,const M2 &m2) { |
---|
| 822 | return ForkMap<M1, M2, True>(m1,m2); |
---|
[1219] | 823 | } |
---|
| 824 | |
---|
[1456] | 825 | |
---|
| 826 | |
---|
| 827 | /* ************* BOOL MAPS ******************* */ |
---|
| 828 | |
---|
| 829 | ///Logical 'not' of a map |
---|
| 830 | |
---|
| 831 | ///This bool \ref concept::ReadMap "read only map" returns the |
---|
| 832 | ///logical negation of |
---|
| 833 | ///value returned by the |
---|
| 834 | ///given map. Its \c Key and will be inherited from \c M, |
---|
| 835 | ///its Value is <tt>bool</tt>. |
---|
| 836 | |
---|
[1675] | 837 | template <typename M, typename NC = False> |
---|
| 838 | class NotMap : public MapBase<typename M::Key, bool, NC> { |
---|
[1456] | 839 | typename SmartConstReference<M>::Type m; |
---|
| 840 | public: |
---|
[1675] | 841 | typedef MapBase<typename M::Key, bool, NC> Parent; |
---|
| 842 | typedef typename Parent::Key Key; |
---|
| 843 | typedef typename Parent::Value Value; |
---|
[1456] | 844 | |
---|
| 845 | ///Constructor |
---|
| 846 | NotMap(const M &_m) : m(_m) {}; |
---|
| 847 | Value operator[](Key k) const {return !m[k];} |
---|
| 848 | }; |
---|
| 849 | |
---|
| 850 | ///Returns a \ref NotMap class |
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| 851 | |
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| 852 | ///This function just returns a \ref NotMap class. |
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| 853 | ///\relates NotMap |
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[1675] | 854 | template <typename M> |
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| 855 | inline NotMap<M, True> notMap(const M &m) { |
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| 856 | return NotMap<M, True>(m); |
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[1456] | 857 | } |
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| 858 | |
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[1041] | 859 | /// @} |
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[286] | 860 | } |
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[1041] | 861 | |
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[921] | 862 | #endif // LEMON_MAPS_H |
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