1 | /* -*- C++ -*- |
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2 | * |
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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) 2003-2007 |
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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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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_MAPS_H |
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20 | #define LEMON_MAPS_H |
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21 | |
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22 | #include <iterator> |
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23 | #include <functional> |
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24 | #include <vector> |
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25 | |
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26 | #include <lemon/bits/utility.h> |
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27 | // #include <lemon/bits/traits.h> |
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28 | |
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29 | ///\file |
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30 | ///\ingroup maps |
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31 | ///\brief Miscellaneous property maps |
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32 | /// |
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33 | #include <map> |
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34 | |
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35 | namespace lemon { |
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36 | |
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37 | /// \addtogroup maps |
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38 | /// @{ |
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39 | |
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40 | /// Base class of maps. |
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41 | |
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42 | /// Base class of maps. |
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43 | /// It provides the necessary <tt>typedef</tt>s required by the map concept. |
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44 | template<typename K, typename T> |
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45 | class MapBase { |
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46 | public: |
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47 | /// The key type of the map. |
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48 | typedef K Key; |
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49 | /// The value type of the map. (The type of objects associated with the keys). |
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50 | typedef T Value; |
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51 | }; |
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52 | |
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53 | /// Null map. (a.k.a. DoNothingMap) |
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54 | |
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55 | /// This map can be used if you have to provide a map only for |
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56 | /// its type definitions, or if you have to provide a writable map, |
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57 | /// but data written to it is not required (i.e. it will be sent to |
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58 | /// <tt>/dev/null</tt>). |
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59 | template<typename K, typename T> |
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60 | class NullMap : public MapBase<K, T> { |
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61 | public: |
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62 | typedef MapBase<K, T> Parent; |
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63 | typedef typename Parent::Key Key; |
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64 | typedef typename Parent::Value Value; |
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65 | |
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66 | /// Gives back a default constructed element. |
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67 | T operator[](const K&) const { return T(); } |
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68 | /// Absorbs the value. |
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69 | void set(const K&, const T&) {} |
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70 | }; |
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71 | |
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72 | ///Returns a \c NullMap class |
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73 | |
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74 | ///This function just returns a \c NullMap class. |
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75 | ///\relates NullMap |
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76 | template <typename K, typename V> |
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77 | NullMap<K, V> nullMap() { |
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78 | return NullMap<K, V>(); |
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79 | } |
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80 | |
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81 | |
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82 | /// Constant map. |
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83 | |
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84 | /// This is a readable map which assigns a specified value to each key. |
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85 | /// In other aspects it is equivalent to the \c NullMap. |
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86 | template<typename K, typename T> |
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87 | class ConstMap : public MapBase<K, T> { |
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88 | private: |
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89 | T v; |
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90 | public: |
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91 | |
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92 | typedef MapBase<K, T> Parent; |
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93 | typedef typename Parent::Key Key; |
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94 | typedef typename Parent::Value Value; |
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95 | |
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96 | /// Default constructor |
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97 | |
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98 | /// Default constructor. |
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99 | /// The value of the map will be uninitialized. |
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100 | /// (More exactly it will be default constructed.) |
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101 | ConstMap() {} |
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102 | |
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103 | /// Constructor with specified initial value |
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104 | |
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105 | /// Constructor with specified initial value. |
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106 | /// \param _v is the initial value of the map. |
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107 | ConstMap(const T &_v) : v(_v) {} |
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108 | |
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109 | ///\e |
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110 | T operator[](const K&) const { return v; } |
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111 | |
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112 | ///\e |
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113 | void setAll(const T &t) { |
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114 | v = t; |
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115 | } |
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116 | |
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117 | template<typename T1> |
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118 | struct rebind { |
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119 | typedef ConstMap<K, T1> other; |
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120 | }; |
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121 | |
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122 | template<typename T1> |
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123 | ConstMap(const ConstMap<K, T1> &, const T &_v) : v(_v) {} |
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124 | }; |
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125 | |
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126 | ///Returns a \c ConstMap class |
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127 | |
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128 | ///This function just returns a \c ConstMap class. |
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129 | ///\relates ConstMap |
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130 | template<typename K, typename V> |
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131 | inline ConstMap<K, V> constMap(const V &v) { |
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132 | return ConstMap<K, V>(v); |
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133 | } |
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134 | |
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135 | |
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136 | template<typename T, T v> |
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137 | struct Const { }; |
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138 | |
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139 | /// Constant map with inlined constant value. |
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140 | |
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141 | /// This is a readable map which assigns a specified value to each key. |
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142 | /// In other aspects it is equivalent to the \c NullMap. |
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143 | template<typename K, typename V, V v> |
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144 | class ConstMap<K, Const<V, v> > : public MapBase<K, V> { |
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145 | public: |
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146 | typedef MapBase<K, V> Parent; |
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147 | typedef typename Parent::Key Key; |
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148 | typedef typename Parent::Value Value; |
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149 | |
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150 | ConstMap() { } |
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151 | ///\e |
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152 | V operator[](const K&) const { return v; } |
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153 | ///\e |
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154 | void set(const K&, const V&) { } |
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155 | }; |
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156 | |
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157 | ///Returns a \c ConstMap class |
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158 | |
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159 | ///This function just returns a \c ConstMap class with inlined value. |
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160 | ///\relates ConstMap |
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161 | template<typename K, typename V, V v> |
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162 | inline ConstMap<K, Const<V, v> > constMap() { |
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163 | return ConstMap<K, Const<V, v> >(); |
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164 | } |
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165 | |
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166 | ///Map based on std::map |
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167 | |
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168 | ///This is essentially a wrapper for \c std::map with addition that |
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169 | ///you can specify a default value different from \c Value(). |
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170 | template <typename K, typename T, typename Compare = std::less<K> > |
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171 | class StdMap { |
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172 | template <typename K1, typename T1, typename C1> |
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173 | friend class StdMap; |
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174 | public: |
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175 | |
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176 | typedef True ReferenceMapTag; |
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177 | ///\e |
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178 | typedef K Key; |
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179 | ///\e |
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180 | typedef T Value; |
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181 | ///\e |
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182 | typedef T& Reference; |
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183 | ///\e |
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184 | typedef const T& ConstReference; |
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185 | |
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186 | private: |
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187 | |
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188 | typedef std::map<K, T, Compare> Map; |
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189 | Value _value; |
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190 | Map _map; |
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191 | |
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192 | public: |
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193 | |
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194 | /// Constructor with specified default value |
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195 | StdMap(const T& value = T()) : _value(value) {} |
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196 | /// \brief Constructs the map from an appropriate std::map, and explicitly |
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197 | /// specifies a default value. |
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198 | template <typename T1, typename Comp1> |
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199 | StdMap(const std::map<Key, T1, Comp1> &map, const T& value = T()) |
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200 | : _map(map.begin(), map.end()), _value(value) {} |
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201 | |
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202 | /// \brief Constructs a map from an other StdMap. |
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203 | template<typename T1, typename Comp1> |
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204 | StdMap(const StdMap<Key, T1, Comp1> &c) |
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205 | : _map(c._map.begin(), c._map.end()), _value(c._value) {} |
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206 | |
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207 | private: |
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208 | |
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209 | StdMap& operator=(const StdMap&); |
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210 | |
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211 | public: |
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212 | |
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213 | ///\e |
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214 | Reference operator[](const Key &k) { |
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215 | typename Map::iterator it = _map.lower_bound(k); |
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216 | if (it != _map.end() && !_map.key_comp()(k, it->first)) |
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217 | return it->second; |
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218 | else |
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219 | return _map.insert(it, std::make_pair(k, _value))->second; |
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220 | } |
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221 | |
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222 | /// \e |
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223 | ConstReference operator[](const Key &k) const { |
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224 | typename Map::const_iterator it = _map.find(k); |
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225 | if (it != _map.end()) |
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226 | return it->second; |
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227 | else |
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228 | return _value; |
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229 | } |
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230 | |
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231 | /// \e |
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232 | void set(const Key &k, const T &t) { |
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233 | typename Map::iterator it = _map.lower_bound(k); |
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234 | if (it != _map.end() && !_map.key_comp()(k, it->first)) |
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235 | it->second = t; |
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236 | else |
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237 | _map.insert(it, std::make_pair(k, t)); |
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238 | } |
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239 | |
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240 | /// \e |
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241 | void setAll(const T &t) { |
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242 | _value = t; |
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243 | _map.clear(); |
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244 | } |
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245 | |
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246 | template <typename T1, typename C1 = std::less<T1> > |
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247 | struct rebind { |
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248 | typedef StdMap<Key, T1, C1> other; |
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249 | }; |
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250 | }; |
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251 | |
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252 | /// \brief Map for storing values for keys from the range <tt>[0..size-1]</tt> |
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253 | /// |
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254 | /// The current map has the <tt>[0..size-1]</tt> keyset and the values |
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255 | /// are stored in a \c std::vector<T> container. It can be used with |
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256 | /// some data structures, for example \c UnionFind, \c BinHeap, when |
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257 | /// the used items are small integer numbers. |
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258 | /// |
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259 | /// \todo Revise its name |
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260 | template <typename T> |
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261 | class IntegerMap { |
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262 | |
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263 | template <typename T1> |
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264 | friend class IntegerMap; |
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265 | |
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266 | public: |
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267 | |
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268 | typedef True ReferenceMapTag; |
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269 | ///\e |
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270 | typedef int Key; |
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271 | ///\e |
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272 | typedef T Value; |
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273 | ///\e |
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274 | typedef T& Reference; |
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275 | ///\e |
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276 | typedef const T& ConstReference; |
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277 | |
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278 | private: |
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279 | |
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280 | typedef std::vector<T> Vector; |
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281 | Vector _vector; |
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282 | |
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283 | public: |
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284 | |
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285 | /// Constructor with specified default value |
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286 | IntegerMap(int size = 0, const T& value = T()) : _vector(size, value) {} |
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287 | |
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288 | /// \brief Constructs the map from an appropriate std::vector. |
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289 | template <typename T1> |
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290 | IntegerMap(const std::vector<T1>& vector) |
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291 | : _vector(vector.begin(), vector.end()) {} |
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292 | |
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293 | /// \brief Constructs a map from an other IntegerMap. |
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294 | template <typename T1> |
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295 | IntegerMap(const IntegerMap<T1> &c) |
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296 | : _vector(c._vector.begin(), c._vector.end()) {} |
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297 | |
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298 | /// \brief Resize the container |
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299 | void resize(int size, const T& value = T()) { |
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300 | _vector.resize(size, value); |
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301 | } |
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302 | |
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303 | private: |
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304 | |
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305 | IntegerMap& operator=(const IntegerMap&); |
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306 | |
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307 | public: |
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308 | |
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309 | ///\e |
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310 | Reference operator[](Key k) { |
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311 | return _vector[k]; |
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312 | } |
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313 | |
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314 | /// \e |
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315 | ConstReference operator[](Key k) const { |
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316 | return _vector[k]; |
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317 | } |
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318 | |
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319 | /// \e |
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320 | void set(const Key &k, const T& t) { |
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321 | _vector[k] = t; |
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322 | } |
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323 | |
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324 | }; |
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325 | |
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326 | /// @} |
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327 | |
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328 | /// \addtogroup map_adaptors |
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329 | /// @{ |
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330 | |
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331 | /// \brief Identity map. |
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332 | /// |
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333 | /// This map gives back the given key as value without any |
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334 | /// modification. |
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335 | template <typename T> |
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336 | class IdentityMap : public MapBase<T, T> { |
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337 | public: |
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338 | typedef MapBase<T, T> Parent; |
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339 | typedef typename Parent::Key Key; |
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340 | typedef typename Parent::Value Value; |
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341 | |
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342 | /// \e |
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343 | const T& operator[](const T& t) const { |
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344 | return t; |
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345 | } |
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346 | }; |
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347 | |
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348 | ///Returns an \c IdentityMap class |
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349 | |
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350 | ///This function just returns an \c IdentityMap class. |
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351 | ///\relates IdentityMap |
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352 | template<typename T> |
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353 | inline IdentityMap<T> identityMap() { |
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354 | return IdentityMap<T>(); |
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355 | } |
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356 | |
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357 | |
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358 | ///\brief Convert the \c Value of a map to another type using |
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359 | ///the default conversion. |
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360 | /// |
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361 | ///This \c concepts::ReadMap "read only map" |
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362 | ///converts the \c Value of a map to type \c T. |
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363 | ///Its \c Key is inherited from \c M. |
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364 | template <typename M, typename T> |
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365 | class ConvertMap : public MapBase<typename M::Key, T> { |
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366 | const M& m; |
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367 | public: |
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368 | typedef MapBase<typename M::Key, T> Parent; |
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369 | typedef typename Parent::Key Key; |
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370 | typedef typename Parent::Value Value; |
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371 | |
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372 | ///Constructor |
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373 | |
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374 | ///Constructor. |
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375 | ///\param _m is the underlying map. |
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376 | ConvertMap(const M &_m) : m(_m) {}; |
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377 | |
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378 | /// \brief The subscript operator. |
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379 | /// |
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380 | /// The subscript operator. |
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381 | Value operator[](const Key& k) const {return m[k];} |
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382 | }; |
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383 | |
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384 | ///Returns a \c ConvertMap class |
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385 | |
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386 | ///This function just returns a \c ConvertMap class. |
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387 | ///\relates ConvertMap |
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388 | template<typename T, typename M> |
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389 | inline ConvertMap<M, T> convertMap(const M &m) { |
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390 | return ConvertMap<M, T>(m); |
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391 | } |
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392 | |
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393 | ///Simple wrapping of a map |
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394 | |
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395 | ///This \c concepts::ReadMap "read only map" returns the simple |
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396 | ///wrapping of the given map. Sometimes the reference maps cannot be |
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397 | ///combined with simple read maps. This map adaptor wraps the given |
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398 | ///map to simple read map. |
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399 | /// |
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400 | ///\sa SimpleWriteMap |
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401 | /// |
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402 | /// \todo Revise the misleading name |
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403 | template<typename M> |
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404 | class SimpleMap : public MapBase<typename M::Key, typename M::Value> { |
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405 | const M& m; |
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406 | |
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407 | public: |
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408 | typedef MapBase<typename M::Key, typename M::Value> Parent; |
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409 | typedef typename Parent::Key Key; |
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410 | typedef typename Parent::Value Value; |
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411 | |
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412 | ///Constructor |
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413 | SimpleMap(const M &_m) : m(_m) {}; |
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414 | ///\e |
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415 | Value operator[](Key k) const {return m[k];} |
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416 | }; |
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417 | |
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418 | ///Simple writable wrapping of the map |
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419 | |
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420 | ///This \c concepts::WriteMap "write map" returns the simple |
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421 | ///wrapping of the given map. Sometimes the reference maps cannot be |
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422 | ///combined with simple read-write maps. This map adaptor wraps the |
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423 | ///given map to simple read-write map. |
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424 | /// |
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425 | ///\sa SimpleMap |
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426 | /// |
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427 | /// \todo Revise the misleading name |
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428 | template<typename M> |
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429 | class SimpleWriteMap : public MapBase<typename M::Key, typename M::Value> { |
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430 | M& m; |
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431 | |
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432 | public: |
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433 | typedef MapBase<typename M::Key, typename M::Value> Parent; |
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434 | typedef typename Parent::Key Key; |
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435 | typedef typename Parent::Value Value; |
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436 | |
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437 | ///Constructor |
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438 | SimpleWriteMap(M &_m) : m(_m) {}; |
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439 | ///\e |
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440 | Value operator[](Key k) const {return m[k];} |
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441 | ///\e |
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442 | void set(Key k, const Value& c) { m.set(k, c); } |
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443 | }; |
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444 | |
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445 | ///Sum of two maps |
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446 | |
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447 | ///This \c concepts::ReadMap "read only map" returns the sum of the two |
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448 | ///given maps. |
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449 | ///Its \c Key and \c Value are inherited from \c M1. |
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450 | ///The \c Key and \c Value of M2 must be convertible to those of \c M1. |
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451 | template<typename M1, typename M2> |
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452 | class AddMap : public MapBase<typename M1::Key, typename M1::Value> { |
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453 | const M1& m1; |
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454 | const M2& m2; |
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455 | |
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456 | public: |
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457 | typedef MapBase<typename M1::Key, typename M1::Value> Parent; |
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458 | typedef typename Parent::Key Key; |
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459 | typedef typename Parent::Value Value; |
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460 | |
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461 | ///Constructor |
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462 | AddMap(const M1 &_m1,const M2 &_m2) : m1(_m1), m2(_m2) {}; |
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463 | ///\e |
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464 | Value operator[](Key k) const {return m1[k]+m2[k];} |
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465 | }; |
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466 | |
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467 | ///Returns an \c AddMap class |
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468 | |
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469 | ///This function just returns an \c AddMap class. |
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470 | ///\todo How to call these type of functions? |
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471 | /// |
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472 | ///\relates AddMap |
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473 | template<typename M1, typename M2> |
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474 | inline AddMap<M1, M2> addMap(const M1 &m1,const M2 &m2) { |
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475 | return AddMap<M1, M2>(m1,m2); |
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476 | } |
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477 | |
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478 | ///Shift a map with a constant. |
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479 | |
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480 | ///This \c concepts::ReadMap "read only map" returns the sum of the |
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481 | ///given map and a constant value. |
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482 | ///Its \c Key and \c Value are inherited from \c M. |
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483 | /// |
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484 | ///Actually, |
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485 | ///\code |
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486 | /// ShiftMap<X> sh(x,v); |
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487 | ///\endcode |
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488 | ///is equivalent to |
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489 | ///\code |
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490 | /// ConstMap<X::Key, X::Value> c_tmp(v); |
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491 | /// AddMap<X, ConstMap<X::Key, X::Value> > sh(x,v); |
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492 | ///\endcode |
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493 | /// |
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494 | ///\sa ShiftWriteMap |
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495 | template<typename M, typename C = typename M::Value> |
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496 | class ShiftMap : public MapBase<typename M::Key, typename M::Value> { |
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497 | const M& m; |
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498 | C v; |
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499 | public: |
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500 | typedef MapBase<typename M::Key, typename M::Value> Parent; |
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501 | typedef typename Parent::Key Key; |
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502 | typedef typename Parent::Value Value; |
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503 | |
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504 | ///Constructor |
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505 | |
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506 | ///Constructor. |
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507 | ///\param _m is the undelying map. |
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508 | ///\param _v is the shift value. |
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509 | ShiftMap(const M &_m, const C &_v ) : m(_m), v(_v) {}; |
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510 | ///\e |
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511 | Value operator[](Key k) const {return m[k] + v;} |
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512 | }; |
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513 | |
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514 | ///Shift a map with a constant (ReadWrite version). |
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515 | |
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516 | ///This \c concepts::ReadWriteMap "read-write map" returns the sum of the |
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517 | ///given map and a constant value. It makes also possible to write the map. |
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518 | ///Its \c Key and \c Value are inherited from \c M. |
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519 | /// |
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520 | ///\sa ShiftMap |
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521 | template<typename M, typename C = typename M::Value> |
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522 | class ShiftWriteMap : public MapBase<typename M::Key, typename M::Value> { |
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523 | M& m; |
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524 | C v; |
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525 | public: |
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526 | typedef MapBase<typename M::Key, typename M::Value> Parent; |
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527 | typedef typename Parent::Key Key; |
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528 | typedef typename Parent::Value Value; |
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529 | |
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530 | ///Constructor |
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531 | |
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532 | ///Constructor. |
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533 | ///\param _m is the undelying map. |
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534 | ///\param _v is the shift value. |
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535 | ShiftWriteMap(M &_m, const C &_v ) : m(_m), v(_v) {}; |
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536 | /// \e |
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537 | Value operator[](Key k) const {return m[k] + v;} |
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538 | /// \e |
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539 | void set(Key k, const Value& c) { m.set(k, c - v); } |
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540 | }; |
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541 | |
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542 | ///Returns a \c ShiftMap class |
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543 | |
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544 | ///This function just returns a \c ShiftMap class. |
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545 | ///\relates ShiftMap |
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546 | template<typename M, typename C> |
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547 | inline ShiftMap<M, C> shiftMap(const M &m,const C &v) { |
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548 | return ShiftMap<M, C>(m,v); |
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549 | } |
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550 | |
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551 | ///Returns a \c ShiftWriteMap class |
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552 | |
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553 | ///This function just returns a \c ShiftWriteMap class. |
---|
554 | ///\relates ShiftWriteMap |
---|
555 | template<typename M, typename C> |
---|
556 | inline ShiftWriteMap<M, C> shiftMap(M &m,const C &v) { |
---|
557 | return ShiftWriteMap<M, C>(m,v); |
---|
558 | } |
---|
559 | |
---|
560 | ///Difference of two maps |
---|
561 | |
---|
562 | ///This \c concepts::ReadMap "read only map" returns the difference |
---|
563 | ///of the values of the two given maps. |
---|
564 | ///Its \c Key and \c Value are inherited from \c M1. |
---|
565 | ///The \c Key and \c Value of \c M2 must be convertible to those of \c M1. |
---|
566 | /// |
---|
567 | /// \todo Revise the misleading name |
---|
568 | template<typename M1, typename M2> |
---|
569 | class SubMap : public MapBase<typename M1::Key, typename M1::Value> { |
---|
570 | const M1& m1; |
---|
571 | const M2& m2; |
---|
572 | public: |
---|
573 | typedef MapBase<typename M1::Key, typename M1::Value> Parent; |
---|
574 | typedef typename Parent::Key Key; |
---|
575 | typedef typename Parent::Value Value; |
---|
576 | |
---|
577 | ///Constructor |
---|
578 | SubMap(const M1 &_m1,const M2 &_m2) : m1(_m1), m2(_m2) {}; |
---|
579 | /// \e |
---|
580 | Value operator[](Key k) const {return m1[k]-m2[k];} |
---|
581 | }; |
---|
582 | |
---|
583 | ///Returns a \c SubMap class |
---|
584 | |
---|
585 | ///This function just returns a \c SubMap class. |
---|
586 | /// |
---|
587 | ///\relates SubMap |
---|
588 | template<typename M1, typename M2> |
---|
589 | inline SubMap<M1, M2> subMap(const M1 &m1, const M2 &m2) { |
---|
590 | return SubMap<M1, M2>(m1, m2); |
---|
591 | } |
---|
592 | |
---|
593 | ///Product of two maps |
---|
594 | |
---|
595 | ///This \c concepts::ReadMap "read only map" returns the product of the |
---|
596 | ///values of the two given maps. |
---|
597 | ///Its \c Key and \c Value are inherited from \c M1. |
---|
598 | ///The \c Key and \c Value of \c M2 must be convertible to those of \c M1. |
---|
599 | template<typename M1, typename M2> |
---|
600 | class MulMap : public MapBase<typename M1::Key, typename M1::Value> { |
---|
601 | const M1& m1; |
---|
602 | const M2& m2; |
---|
603 | public: |
---|
604 | typedef MapBase<typename M1::Key, typename M1::Value> Parent; |
---|
605 | typedef typename Parent::Key Key; |
---|
606 | typedef typename Parent::Value Value; |
---|
607 | |
---|
608 | ///Constructor |
---|
609 | MulMap(const M1 &_m1,const M2 &_m2) : m1(_m1), m2(_m2) {}; |
---|
610 | /// \e |
---|
611 | Value operator[](Key k) const {return m1[k]*m2[k];} |
---|
612 | }; |
---|
613 | |
---|
614 | ///Returns a \c MulMap class |
---|
615 | |
---|
616 | ///This function just returns a \c MulMap class. |
---|
617 | ///\relates MulMap |
---|
618 | template<typename M1, typename M2> |
---|
619 | inline MulMap<M1, M2> mulMap(const M1 &m1,const M2 &m2) { |
---|
620 | return MulMap<M1, M2>(m1,m2); |
---|
621 | } |
---|
622 | |
---|
623 | ///Scales a map with a constant. |
---|
624 | |
---|
625 | ///This \c concepts::ReadMap "read only map" returns the value of the |
---|
626 | ///given map multiplied from the left side with a constant value. |
---|
627 | ///Its \c Key and \c Value are inherited from \c M. |
---|
628 | /// |
---|
629 | ///Actually, |
---|
630 | ///\code |
---|
631 | /// ScaleMap<X> sc(x,v); |
---|
632 | ///\endcode |
---|
633 | ///is equivalent to |
---|
634 | ///\code |
---|
635 | /// ConstMap<X::Key, X::Value> c_tmp(v); |
---|
636 | /// MulMap<X, ConstMap<X::Key, X::Value> > sc(x,v); |
---|
637 | ///\endcode |
---|
638 | /// |
---|
639 | ///\sa ScaleWriteMap |
---|
640 | template<typename M, typename C = typename M::Value> |
---|
641 | class ScaleMap : public MapBase<typename M::Key, typename M::Value> { |
---|
642 | const M& m; |
---|
643 | C v; |
---|
644 | public: |
---|
645 | typedef MapBase<typename M::Key, typename M::Value> Parent; |
---|
646 | typedef typename Parent::Key Key; |
---|
647 | typedef typename Parent::Value Value; |
---|
648 | |
---|
649 | ///Constructor |
---|
650 | |
---|
651 | ///Constructor. |
---|
652 | ///\param _m is the undelying map. |
---|
653 | ///\param _v is the scaling value. |
---|
654 | ScaleMap(const M &_m, const C &_v ) : m(_m), v(_v) {}; |
---|
655 | /// \e |
---|
656 | Value operator[](Key k) const {return v * m[k];} |
---|
657 | }; |
---|
658 | |
---|
659 | ///Scales a map with a constant (ReadWrite version). |
---|
660 | |
---|
661 | ///This \c concepts::ReadWriteMap "read-write map" returns the value of the |
---|
662 | ///given map multiplied from the left side with a constant value. It can |
---|
663 | ///also be used as write map if the \c / operator is defined between |
---|
664 | ///\c Value and \c C and the given multiplier is not zero. |
---|
665 | ///Its \c Key and \c Value are inherited from \c M. |
---|
666 | /// |
---|
667 | ///\sa ScaleMap |
---|
668 | template<typename M, typename C = typename M::Value> |
---|
669 | class ScaleWriteMap : public MapBase<typename M::Key, typename M::Value> { |
---|
670 | M& m; |
---|
671 | C v; |
---|
672 | public: |
---|
673 | typedef MapBase<typename M::Key, typename M::Value> Parent; |
---|
674 | typedef typename Parent::Key Key; |
---|
675 | typedef typename Parent::Value Value; |
---|
676 | |
---|
677 | ///Constructor |
---|
678 | |
---|
679 | ///Constructor. |
---|
680 | ///\param _m is the undelying map. |
---|
681 | ///\param _v is the scaling value. |
---|
682 | ScaleWriteMap(M &_m, const C &_v ) : m(_m), v(_v) {}; |
---|
683 | /// \e |
---|
684 | Value operator[](Key k) const {return v * m[k];} |
---|
685 | /// \e |
---|
686 | void set(Key k, const Value& c) { m.set(k, c / v);} |
---|
687 | }; |
---|
688 | |
---|
689 | ///Returns a \c ScaleMap class |
---|
690 | |
---|
691 | ///This function just returns a \c ScaleMap class. |
---|
692 | ///\relates ScaleMap |
---|
693 | template<typename M, typename C> |
---|
694 | inline ScaleMap<M, C> scaleMap(const M &m,const C &v) { |
---|
695 | return ScaleMap<M, C>(m,v); |
---|
696 | } |
---|
697 | |
---|
698 | ///Returns a \c ScaleWriteMap class |
---|
699 | |
---|
700 | ///This function just returns a \c ScaleWriteMap class. |
---|
701 | ///\relates ScaleWriteMap |
---|
702 | template<typename M, typename C> |
---|
703 | inline ScaleWriteMap<M, C> scaleMap(M &m,const C &v) { |
---|
704 | return ScaleWriteMap<M, C>(m,v); |
---|
705 | } |
---|
706 | |
---|
707 | ///Quotient of two maps |
---|
708 | |
---|
709 | ///This \c concepts::ReadMap "read only map" returns the quotient of the |
---|
710 | ///values of the two given maps. |
---|
711 | ///Its \c Key and \c Value are inherited from \c M1. |
---|
712 | ///The \c Key and \c Value of \c M2 must be convertible to those of \c M1. |
---|
713 | template<typename M1, typename M2> |
---|
714 | class DivMap : public MapBase<typename M1::Key, typename M1::Value> { |
---|
715 | const M1& m1; |
---|
716 | const M2& m2; |
---|
717 | public: |
---|
718 | typedef MapBase<typename M1::Key, typename M1::Value> Parent; |
---|
719 | typedef typename Parent::Key Key; |
---|
720 | typedef typename Parent::Value Value; |
---|
721 | |
---|
722 | ///Constructor |
---|
723 | DivMap(const M1 &_m1,const M2 &_m2) : m1(_m1), m2(_m2) {}; |
---|
724 | /// \e |
---|
725 | Value operator[](Key k) const {return m1[k]/m2[k];} |
---|
726 | }; |
---|
727 | |
---|
728 | ///Returns a \c DivMap class |
---|
729 | |
---|
730 | ///This function just returns a \c DivMap class. |
---|
731 | ///\relates DivMap |
---|
732 | template<typename M1, typename M2> |
---|
733 | inline DivMap<M1, M2> divMap(const M1 &m1,const M2 &m2) { |
---|
734 | return DivMap<M1, M2>(m1,m2); |
---|
735 | } |
---|
736 | |
---|
737 | ///Composition of two maps |
---|
738 | |
---|
739 | ///This \c concepts::ReadMap "read only map" returns the composition of |
---|
740 | ///two given maps. |
---|
741 | ///That is to say, if \c m1 is of type \c M1 and \c m2 is of \c M2, |
---|
742 | ///then for |
---|
743 | ///\code |
---|
744 | /// ComposeMap<M1, M2> cm(m1,m2); |
---|
745 | ///\endcode |
---|
746 | /// <tt>cm[x]</tt> will be equal to <tt>m1[m2[x]]</tt>. |
---|
747 | /// |
---|
748 | ///Its \c Key is inherited from \c M2 and its \c Value is from \c M1. |
---|
749 | ///\c M2::Value must be convertible to \c M1::Key. |
---|
750 | /// |
---|
751 | ///\sa CombineMap |
---|
752 | /// |
---|
753 | ///\todo Check the requirements. |
---|
754 | template <typename M1, typename M2> |
---|
755 | class ComposeMap : public MapBase<typename M2::Key, typename M1::Value> { |
---|
756 | const M1& m1; |
---|
757 | const M2& m2; |
---|
758 | public: |
---|
759 | typedef MapBase<typename M2::Key, typename M1::Value> Parent; |
---|
760 | typedef typename Parent::Key Key; |
---|
761 | typedef typename Parent::Value Value; |
---|
762 | |
---|
763 | ///Constructor |
---|
764 | ComposeMap(const M1 &_m1,const M2 &_m2) : m1(_m1), m2(_m2) {}; |
---|
765 | |
---|
766 | /// \e |
---|
767 | |
---|
768 | |
---|
769 | /// \todo Use the MapTraits once it is ported. |
---|
770 | /// |
---|
771 | |
---|
772 | //typename MapTraits<M1>::ConstReturnValue |
---|
773 | typename M1::Value |
---|
774 | operator[](Key k) const {return m1[m2[k]];} |
---|
775 | }; |
---|
776 | |
---|
777 | ///Returns a \c ComposeMap class |
---|
778 | |
---|
779 | ///This function just returns a \c ComposeMap class. |
---|
780 | ///\relates ComposeMap |
---|
781 | template <typename M1, typename M2> |
---|
782 | inline ComposeMap<M1, M2> composeMap(const M1 &m1,const M2 &m2) { |
---|
783 | return ComposeMap<M1, M2>(m1,m2); |
---|
784 | } |
---|
785 | |
---|
786 | ///Combine of two maps using an STL (binary) functor. |
---|
787 | |
---|
788 | ///Combine of two maps using an STL (binary) functor. |
---|
789 | /// |
---|
790 | ///This \c concepts::ReadMap "read only map" takes two maps and a |
---|
791 | ///binary functor and returns the composition of the two |
---|
792 | ///given maps unsing the functor. |
---|
793 | ///That is to say, if \c m1 and \c m2 is of type \c M1 and \c M2 |
---|
794 | ///and \c f is of \c F, then for |
---|
795 | ///\code |
---|
796 | /// CombineMap<M1,M2,F,V> cm(m1,m2,f); |
---|
797 | ///\endcode |
---|
798 | /// <tt>cm[x]</tt> will be equal to <tt>f(m1[x],m2[x])</tt> |
---|
799 | /// |
---|
800 | ///Its \c Key is inherited from \c M1 and its \c Value is \c V. |
---|
801 | ///\c M2::Value and \c M1::Value must be convertible to the corresponding |
---|
802 | ///input parameter of \c F and the return type of \c F must be convertible |
---|
803 | ///to \c V. |
---|
804 | /// |
---|
805 | ///\sa ComposeMap |
---|
806 | /// |
---|
807 | ///\todo Check the requirements. |
---|
808 | template<typename M1, typename M2, typename F, |
---|
809 | typename V = typename F::result_type> |
---|
810 | class CombineMap : public MapBase<typename M1::Key, V> { |
---|
811 | const M1& m1; |
---|
812 | const M2& m2; |
---|
813 | F f; |
---|
814 | public: |
---|
815 | typedef MapBase<typename M1::Key, V> Parent; |
---|
816 | typedef typename Parent::Key Key; |
---|
817 | typedef typename Parent::Value Value; |
---|
818 | |
---|
819 | ///Constructor |
---|
820 | CombineMap(const M1 &_m1,const M2 &_m2,const F &_f = F()) |
---|
821 | : m1(_m1), m2(_m2), f(_f) {}; |
---|
822 | /// \e |
---|
823 | Value operator[](Key k) const {return f(m1[k],m2[k]);} |
---|
824 | }; |
---|
825 | |
---|
826 | ///Returns a \c CombineMap class |
---|
827 | |
---|
828 | ///This function just returns a \c CombineMap class. |
---|
829 | /// |
---|
830 | ///For example if \c m1 and \c m2 are both \c double valued maps, then |
---|
831 | ///\code |
---|
832 | ///combineMap(m1,m2,std::plus<double>()) |
---|
833 | ///\endcode |
---|
834 | ///is equivalent to |
---|
835 | ///\code |
---|
836 | ///addMap(m1,m2) |
---|
837 | ///\endcode |
---|
838 | /// |
---|
839 | ///This function is specialized for adaptable binary function |
---|
840 | ///classes and C++ functions. |
---|
841 | /// |
---|
842 | ///\relates CombineMap |
---|
843 | template<typename M1, typename M2, typename F, typename V> |
---|
844 | inline CombineMap<M1, M2, F, V> |
---|
845 | combineMap(const M1& m1,const M2& m2, const F& f) { |
---|
846 | return CombineMap<M1, M2, F, V>(m1,m2,f); |
---|
847 | } |
---|
848 | |
---|
849 | template<typename M1, typename M2, typename F> |
---|
850 | inline CombineMap<M1, M2, F, typename F::result_type> |
---|
851 | combineMap(const M1& m1, const M2& m2, const F& f) { |
---|
852 | return combineMap<M1, M2, F, typename F::result_type>(m1,m2,f); |
---|
853 | } |
---|
854 | |
---|
855 | template<typename M1, typename M2, typename K1, typename K2, typename V> |
---|
856 | inline CombineMap<M1, M2, V (*)(K1, K2), V> |
---|
857 | combineMap(const M1 &m1, const M2 &m2, V (*f)(K1, K2)) { |
---|
858 | return combineMap<M1, M2, V (*)(K1, K2), V>(m1,m2,f); |
---|
859 | } |
---|
860 | |
---|
861 | ///Negative value of a map |
---|
862 | |
---|
863 | ///This \c concepts::ReadMap "read only map" returns the negative |
---|
864 | ///value of the value returned by the given map. |
---|
865 | ///Its \c Key and \c Value are inherited from \c M. |
---|
866 | ///The unary \c - operator must be defined for \c Value, of course. |
---|
867 | /// |
---|
868 | ///\sa NegWriteMap |
---|
869 | template<typename M> |
---|
870 | class NegMap : public MapBase<typename M::Key, typename M::Value> { |
---|
871 | const M& m; |
---|
872 | public: |
---|
873 | typedef MapBase<typename M::Key, typename M::Value> Parent; |
---|
874 | typedef typename Parent::Key Key; |
---|
875 | typedef typename Parent::Value Value; |
---|
876 | |
---|
877 | ///Constructor |
---|
878 | NegMap(const M &_m) : m(_m) {}; |
---|
879 | /// \e |
---|
880 | Value operator[](Key k) const {return -m[k];} |
---|
881 | }; |
---|
882 | |
---|
883 | ///Negative value of a map (ReadWrite version) |
---|
884 | |
---|
885 | ///This \c concepts::ReadWriteMap "read-write map" returns the negative |
---|
886 | ///value of the value returned by the given map. |
---|
887 | ///Its \c Key and \c Value are inherited from \c M. |
---|
888 | ///The unary \c - operator must be defined for \c Value, of course. |
---|
889 | /// |
---|
890 | /// \sa NegMap |
---|
891 | template<typename M> |
---|
892 | class NegWriteMap : public MapBase<typename M::Key, typename M::Value> { |
---|
893 | M& m; |
---|
894 | public: |
---|
895 | typedef MapBase<typename M::Key, typename M::Value> Parent; |
---|
896 | typedef typename Parent::Key Key; |
---|
897 | typedef typename Parent::Value Value; |
---|
898 | |
---|
899 | ///Constructor |
---|
900 | NegWriteMap(M &_m) : m(_m) {}; |
---|
901 | /// \e |
---|
902 | Value operator[](Key k) const {return -m[k];} |
---|
903 | /// \e |
---|
904 | void set(Key k, const Value& v) { m.set(k, -v); } |
---|
905 | }; |
---|
906 | |
---|
907 | ///Returns a \c NegMap class |
---|
908 | |
---|
909 | ///This function just returns a \c NegMap class. |
---|
910 | ///\relates NegMap |
---|
911 | template <typename M> |
---|
912 | inline NegMap<M> negMap(const M &m) { |
---|
913 | return NegMap<M>(m); |
---|
914 | } |
---|
915 | |
---|
916 | ///Returns a \c NegWriteMap class |
---|
917 | |
---|
918 | ///This function just returns a \c NegWriteMap class. |
---|
919 | ///\relates NegWriteMap |
---|
920 | template <typename M> |
---|
921 | inline NegWriteMap<M> negMap(M &m) { |
---|
922 | return NegWriteMap<M>(m); |
---|
923 | } |
---|
924 | |
---|
925 | ///Absolute value of a map |
---|
926 | |
---|
927 | ///This \c concepts::ReadMap "read only map" returns the absolute value |
---|
928 | ///of the value returned by the given map. |
---|
929 | ///Its \c Key and \c Value are inherited from \c M. |
---|
930 | ///\c Value must be comparable to \c 0 and the unary \c - |
---|
931 | ///operator must be defined for it, of course. |
---|
932 | template<typename M> |
---|
933 | class AbsMap : public MapBase<typename M::Key, typename M::Value> { |
---|
934 | const M& m; |
---|
935 | public: |
---|
936 | typedef MapBase<typename M::Key, typename M::Value> Parent; |
---|
937 | typedef typename Parent::Key Key; |
---|
938 | typedef typename Parent::Value Value; |
---|
939 | |
---|
940 | ///Constructor |
---|
941 | AbsMap(const M &_m) : m(_m) {}; |
---|
942 | /// \e |
---|
943 | Value operator[](Key k) const { |
---|
944 | Value tmp = m[k]; |
---|
945 | return tmp >= 0 ? tmp : -tmp; |
---|
946 | } |
---|
947 | |
---|
948 | }; |
---|
949 | |
---|
950 | ///Returns an \c AbsMap class |
---|
951 | |
---|
952 | ///This function just returns an \c AbsMap class. |
---|
953 | ///\relates AbsMap |
---|
954 | template<typename M> |
---|
955 | inline AbsMap<M> absMap(const M &m) { |
---|
956 | return AbsMap<M>(m); |
---|
957 | } |
---|
958 | |
---|
959 | ///Converts an STL style functor to a map |
---|
960 | |
---|
961 | ///This \c concepts::ReadMap "read only map" returns the value |
---|
962 | ///of a given functor. |
---|
963 | /// |
---|
964 | ///Template parameters \c K and \c V will become its |
---|
965 | ///\c Key and \c Value. |
---|
966 | ///In most cases they have to be given explicitly because a |
---|
967 | ///functor typically does not provide such typedefs. |
---|
968 | /// |
---|
969 | ///Parameter \c F is the type of the used functor. |
---|
970 | /// |
---|
971 | ///\sa MapFunctor |
---|
972 | template<typename F, |
---|
973 | typename K = typename F::argument_type, |
---|
974 | typename V = typename F::result_type> |
---|
975 | class FunctorMap : public MapBase<K, V> { |
---|
976 | F f; |
---|
977 | public: |
---|
978 | typedef MapBase<K, V> Parent; |
---|
979 | typedef typename Parent::Key Key; |
---|
980 | typedef typename Parent::Value Value; |
---|
981 | |
---|
982 | ///Constructor |
---|
983 | FunctorMap(const F &_f = F()) : f(_f) {} |
---|
984 | /// \e |
---|
985 | Value operator[](Key k) const { return f(k);} |
---|
986 | }; |
---|
987 | |
---|
988 | ///Returns a \c FunctorMap class |
---|
989 | |
---|
990 | ///This function just returns a \c FunctorMap class. |
---|
991 | /// |
---|
992 | ///It is specialized for adaptable function classes and |
---|
993 | ///C++ functions. |
---|
994 | ///\relates FunctorMap |
---|
995 | template<typename K, typename V, typename F> inline |
---|
996 | FunctorMap<F, K, V> functorMap(const F &f) { |
---|
997 | return FunctorMap<F, K, V>(f); |
---|
998 | } |
---|
999 | |
---|
1000 | template <typename F> inline |
---|
1001 | FunctorMap<F, typename F::argument_type, typename F::result_type> |
---|
1002 | functorMap(const F &f) { |
---|
1003 | return FunctorMap<F, typename F::argument_type, |
---|
1004 | typename F::result_type>(f); |
---|
1005 | } |
---|
1006 | |
---|
1007 | template <typename K, typename V> inline |
---|
1008 | FunctorMap<V (*)(K), K, V> functorMap(V (*f)(K)) { |
---|
1009 | return FunctorMap<V (*)(K), K, V>(f); |
---|
1010 | } |
---|
1011 | |
---|
1012 | |
---|
1013 | ///Converts a map to an STL style (unary) functor |
---|
1014 | |
---|
1015 | ///This class Converts a map to an STL style (unary) functor. |
---|
1016 | ///that is it provides an <tt>operator()</tt> to read its values. |
---|
1017 | /// |
---|
1018 | ///For the sake of convenience it also works as |
---|
1019 | ///a ususal \c concepts::ReadMap "readable map", |
---|
1020 | ///i.e. <tt>operator[]</tt> and the \c Key and \c Value typedefs also exist. |
---|
1021 | /// |
---|
1022 | ///\sa FunctorMap |
---|
1023 | template <typename M> |
---|
1024 | class MapFunctor : public MapBase<typename M::Key, typename M::Value> { |
---|
1025 | const M& m; |
---|
1026 | public: |
---|
1027 | typedef MapBase<typename M::Key, typename M::Value> Parent; |
---|
1028 | typedef typename Parent::Key Key; |
---|
1029 | typedef typename Parent::Value Value; |
---|
1030 | |
---|
1031 | typedef typename M::Key argument_type; |
---|
1032 | typedef typename M::Value result_type; |
---|
1033 | |
---|
1034 | ///Constructor |
---|
1035 | MapFunctor(const M &_m) : m(_m) {}; |
---|
1036 | ///\e |
---|
1037 | Value operator()(Key k) const {return m[k];} |
---|
1038 | ///\e |
---|
1039 | Value operator[](Key k) const {return m[k];} |
---|
1040 | }; |
---|
1041 | |
---|
1042 | ///Returns a \c MapFunctor class |
---|
1043 | |
---|
1044 | ///This function just returns a \c MapFunctor class. |
---|
1045 | ///\relates MapFunctor |
---|
1046 | template<typename M> |
---|
1047 | inline MapFunctor<M> mapFunctor(const M &m) { |
---|
1048 | return MapFunctor<M>(m); |
---|
1049 | } |
---|
1050 | |
---|
1051 | ///Applies all map setting operations to two maps |
---|
1052 | |
---|
1053 | ///This map has two \c concepts::ReadMap "readable map" |
---|
1054 | ///parameters and each read request will be passed just to the |
---|
1055 | ///first map. This class is the just readable map type of the ForkWriteMap. |
---|
1056 | /// |
---|
1057 | ///The \c Key and \c Value are inherited from \c M1. |
---|
1058 | ///The \c Key and \c Value of M2 must be convertible from those of \c M1. |
---|
1059 | /// |
---|
1060 | ///\sa ForkWriteMap |
---|
1061 | /// |
---|
1062 | /// \todo Why is it needed? |
---|
1063 | template<typename M1, typename M2> |
---|
1064 | class ForkMap : public MapBase<typename M1::Key, typename M1::Value> { |
---|
1065 | const M1& m1; |
---|
1066 | const M2& m2; |
---|
1067 | public: |
---|
1068 | typedef MapBase<typename M1::Key, typename M1::Value> Parent; |
---|
1069 | typedef typename Parent::Key Key; |
---|
1070 | typedef typename Parent::Value Value; |
---|
1071 | |
---|
1072 | ///Constructor |
---|
1073 | ForkMap(const M1 &_m1, const M2 &_m2) : m1(_m1), m2(_m2) {}; |
---|
1074 | /// \e |
---|
1075 | Value operator[](Key k) const {return m1[k];} |
---|
1076 | }; |
---|
1077 | |
---|
1078 | |
---|
1079 | ///Applies all map setting operations to two maps |
---|
1080 | |
---|
1081 | ///This map has two \c concepts::WriteMap "writable map" |
---|
1082 | ///parameters and each write request will be passed to both of them. |
---|
1083 | ///If \c M1 is also \c concepts::ReadMap "readable", |
---|
1084 | ///then the read operations will return the |
---|
1085 | ///corresponding values of \c M1. |
---|
1086 | /// |
---|
1087 | ///The \c Key and \c Value are inherited from \c M1. |
---|
1088 | ///The \c Key and \c Value of M2 must be convertible from those of \c M1. |
---|
1089 | /// |
---|
1090 | ///\sa ForkMap |
---|
1091 | template<typename M1, typename M2> |
---|
1092 | class ForkWriteMap : public MapBase<typename M1::Key, typename M1::Value> { |
---|
1093 | M1& m1; |
---|
1094 | M2& m2; |
---|
1095 | public: |
---|
1096 | typedef MapBase<typename M1::Key, typename M1::Value> Parent; |
---|
1097 | typedef typename Parent::Key Key; |
---|
1098 | typedef typename Parent::Value Value; |
---|
1099 | |
---|
1100 | ///Constructor |
---|
1101 | ForkWriteMap(M1 &_m1, M2 &_m2) : m1(_m1), m2(_m2) {}; |
---|
1102 | ///\e |
---|
1103 | Value operator[](Key k) const {return m1[k];} |
---|
1104 | ///\e |
---|
1105 | void set(Key k, const Value &v) {m1.set(k,v); m2.set(k,v);} |
---|
1106 | }; |
---|
1107 | |
---|
1108 | ///Returns a \c ForkMap class |
---|
1109 | |
---|
1110 | ///This function just returns a \c ForkMap class. |
---|
1111 | ///\relates ForkMap |
---|
1112 | template <typename M1, typename M2> |
---|
1113 | inline ForkMap<M1, M2> forkMap(const M1 &m1, const M2 &m2) { |
---|
1114 | return ForkMap<M1, M2>(m1,m2); |
---|
1115 | } |
---|
1116 | |
---|
1117 | ///Returns a \c ForkWriteMap class |
---|
1118 | |
---|
1119 | ///This function just returns a \c ForkWriteMap class. |
---|
1120 | ///\relates ForkWriteMap |
---|
1121 | template <typename M1, typename M2> |
---|
1122 | inline ForkWriteMap<M1, M2> forkMap(M1 &m1, M2 &m2) { |
---|
1123 | return ForkWriteMap<M1, M2>(m1,m2); |
---|
1124 | } |
---|
1125 | |
---|
1126 | |
---|
1127 | |
---|
1128 | /* ************* BOOL MAPS ******************* */ |
---|
1129 | |
---|
1130 | ///Logical 'not' of a map |
---|
1131 | |
---|
1132 | ///This bool \c concepts::ReadMap "read only map" returns the |
---|
1133 | ///logical negation of the value returned by the given map. |
---|
1134 | ///Its \c Key is inherited from \c M, its Value is \c bool. |
---|
1135 | /// |
---|
1136 | ///\sa NotWriteMap |
---|
1137 | template <typename M> |
---|
1138 | class NotMap : public MapBase<typename M::Key, bool> { |
---|
1139 | const M& m; |
---|
1140 | public: |
---|
1141 | typedef MapBase<typename M::Key, bool> Parent; |
---|
1142 | typedef typename Parent::Key Key; |
---|
1143 | typedef typename Parent::Value Value; |
---|
1144 | |
---|
1145 | /// Constructor |
---|
1146 | NotMap(const M &_m) : m(_m) {}; |
---|
1147 | ///\e |
---|
1148 | Value operator[](Key k) const {return !m[k];} |
---|
1149 | }; |
---|
1150 | |
---|
1151 | ///Logical 'not' of a map (ReadWrie version) |
---|
1152 | |
---|
1153 | ///This bool \c concepts::ReadWriteMap "read-write map" returns the |
---|
1154 | ///logical negation of the value returned by the given map. When it is set, |
---|
1155 | ///the opposite value is set to the original map. |
---|
1156 | ///Its \c Key is inherited from \c M, its Value is \c bool. |
---|
1157 | /// |
---|
1158 | ///\sa NotMap |
---|
1159 | template <typename M> |
---|
1160 | class NotWriteMap : public MapBase<typename M::Key, bool> { |
---|
1161 | M& m; |
---|
1162 | public: |
---|
1163 | typedef MapBase<typename M::Key, bool> Parent; |
---|
1164 | typedef typename Parent::Key Key; |
---|
1165 | typedef typename Parent::Value Value; |
---|
1166 | |
---|
1167 | /// Constructor |
---|
1168 | NotWriteMap(M &_m) : m(_m) {}; |
---|
1169 | ///\e |
---|
1170 | Value operator[](Key k) const {return !m[k];} |
---|
1171 | ///\e |
---|
1172 | void set(Key k, bool v) { m.set(k, !v); } |
---|
1173 | }; |
---|
1174 | |
---|
1175 | ///Returns a \c NotMap class |
---|
1176 | |
---|
1177 | ///This function just returns a \c NotMap class. |
---|
1178 | ///\relates NotMap |
---|
1179 | template <typename M> |
---|
1180 | inline NotMap<M> notMap(const M &m) { |
---|
1181 | return NotMap<M>(m); |
---|
1182 | } |
---|
1183 | |
---|
1184 | ///Returns a \c NotWriteMap class |
---|
1185 | |
---|
1186 | ///This function just returns a \c NotWriteMap class. |
---|
1187 | ///\relates NotWriteMap |
---|
1188 | template <typename M> |
---|
1189 | inline NotWriteMap<M> notMap(M &m) { |
---|
1190 | return NotWriteMap<M>(m); |
---|
1191 | } |
---|
1192 | |
---|
1193 | namespace _maps_bits { |
---|
1194 | |
---|
1195 | template <typename Value> |
---|
1196 | struct Identity { |
---|
1197 | typedef Value argument_type; |
---|
1198 | typedef Value result_type; |
---|
1199 | Value operator()(const Value& val) const { |
---|
1200 | return val; |
---|
1201 | } |
---|
1202 | }; |
---|
1203 | |
---|
1204 | template <typename _Iterator, typename Enable = void> |
---|
1205 | struct IteratorTraits { |
---|
1206 | typedef typename std::iterator_traits<_Iterator>::value_type Value; |
---|
1207 | }; |
---|
1208 | |
---|
1209 | template <typename _Iterator> |
---|
1210 | struct IteratorTraits<_Iterator, |
---|
1211 | typename exists<typename _Iterator::container_type>::type> |
---|
1212 | { |
---|
1213 | typedef typename _Iterator::container_type::value_type Value; |
---|
1214 | }; |
---|
1215 | |
---|
1216 | } |
---|
1217 | |
---|
1218 | |
---|
1219 | /// \brief Writable bool map for logging each \c true assigned element |
---|
1220 | /// |
---|
1221 | /// Writable bool map for logging each \c true assigned element, i.e it |
---|
1222 | /// copies all the keys set to \c true to the given iterator. |
---|
1223 | /// |
---|
1224 | /// \note The container of the iterator should contain space |
---|
1225 | /// for each element. |
---|
1226 | /// |
---|
1227 | /// The following example shows how you can write the edges found by the Prim |
---|
1228 | /// algorithm directly |
---|
1229 | /// to the standard output. |
---|
1230 | ///\code |
---|
1231 | /// typedef IdMap<Graph, Edge> EdgeIdMap; |
---|
1232 | /// EdgeIdMap edgeId(graph); |
---|
1233 | /// |
---|
1234 | /// typedef MapFunctor<EdgeIdMap> EdgeIdFunctor; |
---|
1235 | /// EdgeIdFunctor edgeIdFunctor(edgeId); |
---|
1236 | /// |
---|
1237 | /// StoreBoolMap<ostream_iterator<int>, EdgeIdFunctor> |
---|
1238 | /// writerMap(ostream_iterator<int>(cout, " "), edgeIdFunctor); |
---|
1239 | /// |
---|
1240 | /// prim(graph, cost, writerMap); |
---|
1241 | ///\endcode |
---|
1242 | /// |
---|
1243 | ///\sa BackInserterBoolMap |
---|
1244 | ///\sa FrontInserterBoolMap |
---|
1245 | ///\sa InserterBoolMap |
---|
1246 | /// |
---|
1247 | ///\todo Revise the name of this class and the related ones. |
---|
1248 | template <typename _Iterator, |
---|
1249 | typename _Functor = |
---|
1250 | _maps_bits::Identity<typename _maps_bits:: |
---|
1251 | IteratorTraits<_Iterator>::Value> > |
---|
1252 | class StoreBoolMap { |
---|
1253 | public: |
---|
1254 | typedef _Iterator Iterator; |
---|
1255 | |
---|
1256 | typedef typename _Functor::argument_type Key; |
---|
1257 | typedef bool Value; |
---|
1258 | |
---|
1259 | typedef _Functor Functor; |
---|
1260 | |
---|
1261 | /// Constructor |
---|
1262 | StoreBoolMap(Iterator it, const Functor& functor = Functor()) |
---|
1263 | : _begin(it), _end(it), _functor(functor) {} |
---|
1264 | |
---|
1265 | /// Gives back the given iterator set for the first key |
---|
1266 | Iterator begin() const { |
---|
1267 | return _begin; |
---|
1268 | } |
---|
1269 | |
---|
1270 | /// Gives back the the 'after the last' iterator |
---|
1271 | Iterator end() const { |
---|
1272 | return _end; |
---|
1273 | } |
---|
1274 | |
---|
1275 | /// The \c set function of the map |
---|
1276 | void set(const Key& key, Value value) const { |
---|
1277 | if (value) { |
---|
1278 | *_end++ = _functor(key); |
---|
1279 | } |
---|
1280 | } |
---|
1281 | |
---|
1282 | private: |
---|
1283 | Iterator _begin; |
---|
1284 | mutable Iterator _end; |
---|
1285 | Functor _functor; |
---|
1286 | }; |
---|
1287 | |
---|
1288 | /// \brief Writable bool map for logging each \c true assigned element in |
---|
1289 | /// a back insertable container. |
---|
1290 | /// |
---|
1291 | /// Writable bool map for logging each \c true assigned element by pushing |
---|
1292 | /// them into a back insertable container. |
---|
1293 | /// It can be used to retrieve the items into a standard |
---|
1294 | /// container. The next example shows how you can store the |
---|
1295 | /// edges found by the Prim algorithm in a vector. |
---|
1296 | /// |
---|
1297 | ///\code |
---|
1298 | /// vector<Edge> span_tree_edges; |
---|
1299 | /// BackInserterBoolMap<vector<Edge> > inserter_map(span_tree_edges); |
---|
1300 | /// prim(graph, cost, inserter_map); |
---|
1301 | ///\endcode |
---|
1302 | /// |
---|
1303 | ///\sa StoreBoolMap |
---|
1304 | ///\sa FrontInserterBoolMap |
---|
1305 | ///\sa InserterBoolMap |
---|
1306 | template <typename Container, |
---|
1307 | typename Functor = |
---|
1308 | _maps_bits::Identity<typename Container::value_type> > |
---|
1309 | class BackInserterBoolMap { |
---|
1310 | public: |
---|
1311 | typedef typename Functor::argument_type Key; |
---|
1312 | typedef bool Value; |
---|
1313 | |
---|
1314 | /// Constructor |
---|
1315 | BackInserterBoolMap(Container& _container, |
---|
1316 | const Functor& _functor = Functor()) |
---|
1317 | : container(_container), functor(_functor) {} |
---|
1318 | |
---|
1319 | /// The \c set function of the map |
---|
1320 | void set(const Key& key, Value value) { |
---|
1321 | if (value) { |
---|
1322 | container.push_back(functor(key)); |
---|
1323 | } |
---|
1324 | } |
---|
1325 | |
---|
1326 | private: |
---|
1327 | Container& container; |
---|
1328 | Functor functor; |
---|
1329 | }; |
---|
1330 | |
---|
1331 | /// \brief Writable bool map for logging each \c true assigned element in |
---|
1332 | /// a front insertable container. |
---|
1333 | /// |
---|
1334 | /// Writable bool map for logging each \c true assigned element by pushing |
---|
1335 | /// them into a front insertable container. |
---|
1336 | /// It can be used to retrieve the items into a standard |
---|
1337 | /// container. For example see \ref BackInserterBoolMap. |
---|
1338 | /// |
---|
1339 | ///\sa BackInserterBoolMap |
---|
1340 | ///\sa InserterBoolMap |
---|
1341 | template <typename Container, |
---|
1342 | typename Functor = |
---|
1343 | _maps_bits::Identity<typename Container::value_type> > |
---|
1344 | class FrontInserterBoolMap { |
---|
1345 | public: |
---|
1346 | typedef typename Functor::argument_type Key; |
---|
1347 | typedef bool Value; |
---|
1348 | |
---|
1349 | /// Constructor |
---|
1350 | FrontInserterBoolMap(Container& _container, |
---|
1351 | const Functor& _functor = Functor()) |
---|
1352 | : container(_container), functor(_functor) {} |
---|
1353 | |
---|
1354 | /// The \c set function of the map |
---|
1355 | void set(const Key& key, Value value) { |
---|
1356 | if (value) { |
---|
1357 | container.push_front(functor(key)); |
---|
1358 | } |
---|
1359 | } |
---|
1360 | |
---|
1361 | private: |
---|
1362 | Container& container; |
---|
1363 | Functor functor; |
---|
1364 | }; |
---|
1365 | |
---|
1366 | /// \brief Writable bool map for storing each \c true assigned element in |
---|
1367 | /// an insertable container. |
---|
1368 | /// |
---|
1369 | /// Writable bool map for storing each \c true assigned element in an |
---|
1370 | /// insertable container. It will insert all the keys set to \c true into |
---|
1371 | /// the container. |
---|
1372 | /// |
---|
1373 | /// For example, if you want to store the cut arcs of the strongly |
---|
1374 | /// connected components in a set you can use the next code: |
---|
1375 | /// |
---|
1376 | ///\code |
---|
1377 | /// set<Arc> cut_arcs; |
---|
1378 | /// InserterBoolMap<set<Arc> > inserter_map(cut_arcs); |
---|
1379 | /// stronglyConnectedCutArcs(digraph, cost, inserter_map); |
---|
1380 | ///\endcode |
---|
1381 | /// |
---|
1382 | ///\sa BackInserterBoolMap |
---|
1383 | ///\sa FrontInserterBoolMap |
---|
1384 | template <typename Container, |
---|
1385 | typename Functor = |
---|
1386 | _maps_bits::Identity<typename Container::value_type> > |
---|
1387 | class InserterBoolMap { |
---|
1388 | public: |
---|
1389 | typedef typename Container::value_type Key; |
---|
1390 | typedef bool Value; |
---|
1391 | |
---|
1392 | /// Constructor with specified iterator |
---|
1393 | |
---|
1394 | /// Constructor with specified iterator. |
---|
1395 | /// \param _container The container for storing the elements. |
---|
1396 | /// \param _it The elements will be inserted before this iterator. |
---|
1397 | /// \param _functor The functor that is used when an element is stored. |
---|
1398 | InserterBoolMap(Container& _container, typename Container::iterator _it, |
---|
1399 | const Functor& _functor = Functor()) |
---|
1400 | : container(_container), it(_it), functor(_functor) {} |
---|
1401 | |
---|
1402 | /// Constructor |
---|
1403 | |
---|
1404 | /// Constructor without specified iterator. |
---|
1405 | /// The elements will be inserted before <tt>_container.end()</tt>. |
---|
1406 | /// \param _container The container for storing the elements. |
---|
1407 | /// \param _functor The functor that is used when an element is stored. |
---|
1408 | InserterBoolMap(Container& _container, const Functor& _functor = Functor()) |
---|
1409 | : container(_container), it(_container.end()), functor(_functor) {} |
---|
1410 | |
---|
1411 | /// The \c set function of the map |
---|
1412 | void set(const Key& key, Value value) { |
---|
1413 | if (value) { |
---|
1414 | it = container.insert(it, functor(key)); |
---|
1415 | ++it; |
---|
1416 | } |
---|
1417 | } |
---|
1418 | |
---|
1419 | private: |
---|
1420 | Container& container; |
---|
1421 | typename Container::iterator it; |
---|
1422 | Functor functor; |
---|
1423 | }; |
---|
1424 | |
---|
1425 | /// \brief Writable bool map for filling each \c true assigned element with a |
---|
1426 | /// given value. |
---|
1427 | /// |
---|
1428 | /// Writable bool map for filling each \c true assigned element with a |
---|
1429 | /// given value. The value can set the container. |
---|
1430 | /// |
---|
1431 | /// The following code finds the connected components of a graph |
---|
1432 | /// and stores it in the \c comp map: |
---|
1433 | ///\code |
---|
1434 | /// typedef Graph::NodeMap<int> ComponentMap; |
---|
1435 | /// ComponentMap comp(graph); |
---|
1436 | /// typedef FillBoolMap<Graph::NodeMap<int> > ComponentFillerMap; |
---|
1437 | /// ComponentFillerMap filler(comp, 0); |
---|
1438 | /// |
---|
1439 | /// Dfs<Graph>::DefProcessedMap<ComponentFillerMap>::Create dfs(graph); |
---|
1440 | /// dfs.processedMap(filler); |
---|
1441 | /// dfs.init(); |
---|
1442 | /// for (NodeIt it(graph); it != INVALID; ++it) { |
---|
1443 | /// if (!dfs.reached(it)) { |
---|
1444 | /// dfs.addSource(it); |
---|
1445 | /// dfs.start(); |
---|
1446 | /// ++filler.fillValue(); |
---|
1447 | /// } |
---|
1448 | /// } |
---|
1449 | ///\endcode |
---|
1450 | template <typename Map> |
---|
1451 | class FillBoolMap { |
---|
1452 | public: |
---|
1453 | typedef typename Map::Key Key; |
---|
1454 | typedef bool Value; |
---|
1455 | |
---|
1456 | /// Constructor |
---|
1457 | FillBoolMap(Map& _map, const typename Map::Value& _fill) |
---|
1458 | : map(_map), fill(_fill) {} |
---|
1459 | |
---|
1460 | /// Constructor |
---|
1461 | FillBoolMap(Map& _map) |
---|
1462 | : map(_map), fill() {} |
---|
1463 | |
---|
1464 | /// Gives back the current fill value |
---|
1465 | const typename Map::Value& fillValue() const { |
---|
1466 | return fill; |
---|
1467 | } |
---|
1468 | |
---|
1469 | /// Gives back the current fill value |
---|
1470 | typename Map::Value& fillValue() { |
---|
1471 | return fill; |
---|
1472 | } |
---|
1473 | |
---|
1474 | /// Sets the current fill value |
---|
1475 | void fillValue(const typename Map::Value& _fill) { |
---|
1476 | fill = _fill; |
---|
1477 | } |
---|
1478 | |
---|
1479 | /// The \c set function of the map |
---|
1480 | void set(const Key& key, Value value) { |
---|
1481 | if (value) { |
---|
1482 | map.set(key, fill); |
---|
1483 | } |
---|
1484 | } |
---|
1485 | |
---|
1486 | private: |
---|
1487 | Map& map; |
---|
1488 | typename Map::Value fill; |
---|
1489 | }; |
---|
1490 | |
---|
1491 | |
---|
1492 | /// \brief Writable bool map for storing the sequence number of |
---|
1493 | /// \c true assignments. |
---|
1494 | /// |
---|
1495 | /// Writable bool map that stores for each \c true assigned elements |
---|
1496 | /// the sequence number of this setting. |
---|
1497 | /// It makes it easy to calculate the leaving |
---|
1498 | /// order of the nodes in the \c Dfs algorithm. |
---|
1499 | /// |
---|
1500 | ///\code |
---|
1501 | /// typedef Digraph::NodeMap<int> OrderMap; |
---|
1502 | /// OrderMap order(digraph); |
---|
1503 | /// typedef SettingOrderBoolMap<OrderMap> OrderSetterMap; |
---|
1504 | /// OrderSetterMap setter(order); |
---|
1505 | /// Dfs<Digraph>::DefProcessedMap<OrderSetterMap>::Create dfs(digraph); |
---|
1506 | /// dfs.processedMap(setter); |
---|
1507 | /// dfs.init(); |
---|
1508 | /// for (NodeIt it(digraph); it != INVALID; ++it) { |
---|
1509 | /// if (!dfs.reached(it)) { |
---|
1510 | /// dfs.addSource(it); |
---|
1511 | /// dfs.start(); |
---|
1512 | /// } |
---|
1513 | /// } |
---|
1514 | ///\endcode |
---|
1515 | /// |
---|
1516 | /// The storing of the discovering order is more difficult because the |
---|
1517 | /// ReachedMap should be readable in the dfs algorithm but the setting |
---|
1518 | /// order map is not readable. Thus we must use the fork map: |
---|
1519 | /// |
---|
1520 | ///\code |
---|
1521 | /// typedef Digraph::NodeMap<int> OrderMap; |
---|
1522 | /// OrderMap order(digraph); |
---|
1523 | /// typedef SettingOrderBoolMap<OrderMap> OrderSetterMap; |
---|
1524 | /// OrderSetterMap setter(order); |
---|
1525 | /// typedef Digraph::NodeMap<bool> StoreMap; |
---|
1526 | /// StoreMap store(digraph); |
---|
1527 | /// |
---|
1528 | /// typedef ForkWriteMap<StoreMap, OrderSetterMap> ReachedMap; |
---|
1529 | /// ReachedMap reached(store, setter); |
---|
1530 | /// |
---|
1531 | /// Dfs<Digraph>::DefReachedMap<ReachedMap>::Create dfs(digraph); |
---|
1532 | /// dfs.reachedMap(reached); |
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1533 | /// dfs.init(); |
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1534 | /// for (NodeIt it(digraph); it != INVALID; ++it) { |
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1535 | /// if (!dfs.reached(it)) { |
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1536 | /// dfs.addSource(it); |
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1537 | /// dfs.start(); |
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1538 | /// } |
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1539 | /// } |
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1540 | ///\endcode |
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1541 | template <typename Map> |
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1542 | class SettingOrderBoolMap { |
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1543 | public: |
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1544 | typedef typename Map::Key Key; |
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1545 | typedef bool Value; |
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1546 | |
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1547 | /// Constructor |
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1548 | SettingOrderBoolMap(Map& _map) |
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1549 | : map(_map), counter(0) {} |
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1550 | |
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1551 | /// Number of set operations. |
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1552 | int num() const { |
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1553 | return counter; |
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1554 | } |
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1555 | |
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1556 | /// Setter function of the map |
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1557 | void set(const Key& key, Value value) { |
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1558 | if (value) { |
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1559 | map.set(key, counter++); |
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1560 | } |
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1561 | } |
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1562 | |
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1563 | private: |
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1564 | Map& map; |
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1565 | int counter; |
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1566 | }; |
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1567 | |
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1568 | /// @} |
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1569 | } |
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1570 | |
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1571 | #endif // LEMON_MAPS_H |
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