1 | // -*- c++ -*- |
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2 | #ifndef VECTOR_MAP_H |
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3 | #define VECTOR_MAP_H |
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4 | |
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5 | #include <vector> |
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6 | |
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7 | #include "extended_pair.h" |
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8 | |
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9 | namespace hugo { |
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10 | |
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11 | /** The VectorMapFactory template class is a factory class |
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12 | * to create maps for the edge and nodes. This map factory |
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13 | * use the std::vector to implement the container function. |
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14 | * |
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15 | * The template parameter is the MapRegistry that the maps |
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16 | * will belong to. |
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17 | */ |
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18 | |
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19 | template <typename MapRegistry> |
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20 | class VectorMapFactory { |
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21 | public: |
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22 | |
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23 | /// The graph type of the maps. |
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24 | typedef typename MapRegistry::Graph Graph; |
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25 | /// The key type of the maps. |
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26 | typedef typename MapRegistry::Key Key; |
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27 | /// The iterator to iterate on the keys. |
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28 | typedef typename MapRegistry::KeyIt KeyIt; |
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29 | |
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30 | /// The MapBase of the Map which imlements the core regisitry function. |
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31 | typedef typename MapRegistry::MapBase MapBase; |
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32 | |
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33 | |
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34 | /** The template Map type. |
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35 | */ |
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36 | template <typename V> |
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37 | class Map : public MapBase { |
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38 | public: |
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39 | |
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40 | /// The value type of the map. |
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41 | typedef V Value; |
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42 | |
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43 | typedef std::vector<Value> Container; |
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44 | |
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45 | /** Default constructor for the map. |
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46 | */ |
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47 | Map() {} |
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48 | |
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49 | /** Graph and Registry initialized map constructor. |
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50 | */ |
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51 | Map(const Graph& g, MapRegistry& r) : MapBase(g, r) { |
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52 | init(); |
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53 | } |
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54 | |
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55 | /** Constructor to use default value to initialize the map. |
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56 | */ |
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57 | Map(const Graph& g, MapRegistry& r, const Value& v) : MapBase(g, r) { |
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58 | for (KeyIt it(*getGraph()); getGraph()->valid(it); getGraph()->next(it)) { |
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59 | int id = getGraph->id(it); |
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60 | if (id >= container.size) { |
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61 | container.resize(id + 1); |
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62 | } |
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63 | set(it, v); |
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64 | } |
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65 | } |
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66 | |
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67 | /** Constructor to copy a map of an other map type. |
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68 | */ |
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69 | template <typename CMap> Map(const CMap& copy) : MapBase(copy) { |
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70 | if (getGraph()) { |
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71 | for (KeyIt it(*getGraph()); getGraph()->valid(it); getGraph()->next(it)) { |
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72 | int id = getGraph->id(it); |
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73 | if (id >= container.size) { |
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74 | container.resize(id + 1); |
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75 | } |
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76 | set(it, copy[it]); |
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77 | } |
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78 | } |
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79 | } |
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80 | |
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81 | /** Assign operator to copy a map an other map type. |
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82 | */ |
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83 | template <typename CMap> Map& operator=(const CMap& copy) { |
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84 | if (getGraph()) { |
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85 | destroy(); |
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86 | } |
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87 | this->MapBase::operator=(copy); |
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88 | if (getGraph()) { |
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89 | for (KeyIt it(*getGraph()); getGraph()->valid(it); getGraph()->next(it)) { |
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90 | int id = getGraph->id(it); |
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91 | if (id >= container.size) { |
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92 | container.resize(id + 1); |
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93 | } |
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94 | set(it, copy[it]); |
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95 | } |
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96 | } |
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97 | } |
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98 | |
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99 | /** The destructor of the map. |
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100 | */ |
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101 | virtual ~Map() { |
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102 | } |
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103 | |
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104 | /** |
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105 | * The subscript operator. The map can be subscripted by the |
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106 | * actual keys of the graph. |
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107 | */ |
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108 | typename Container::reference operator[](const Key& key) { |
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109 | int id = getGraph()->id(key); |
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110 | return container[id]; |
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111 | } |
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112 | |
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113 | /** |
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114 | * The const subscript operator. The map can be subscripted by the |
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115 | * actual keys of the graph. |
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116 | */ |
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117 | typename Container::const_reference operator[](const Key& key) const { |
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118 | int id = getGraph()->id(key); |
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119 | return container[id]; |
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120 | } |
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121 | |
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122 | /** Setter function of the map. Equivalent with map[key] = val. |
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123 | * This is a compatibility feature with the not dereferable maps. |
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124 | */ |
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125 | void set(const Key& key, const Value& val) { |
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126 | int id = getGraph()->id(key); |
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127 | container[id] = val; |
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128 | } |
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129 | |
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130 | /** Add a new key to the map. It called by the map registry. |
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131 | */ |
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132 | void add(const Key& key) { |
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133 | int id = getGraph()->id(key); |
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134 | if (id >= container.size()) { |
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135 | container.resize(id + 1); |
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136 | } |
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137 | } |
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138 | |
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139 | /** Erease a key from the map. It called by the map registry. |
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140 | */ |
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141 | void erase(const Key& key) {} |
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142 | |
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143 | /** Compatible iterator with the stl maps' iterators. |
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144 | * It iterates on pairs of a key and a value. |
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145 | */ |
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146 | class iterator { |
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147 | friend class Map; |
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148 | friend class const_iterator; |
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149 | private: |
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150 | |
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151 | /** Private constructor to initalize the the iterators returned |
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152 | * by the begin() and end(). |
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153 | */ |
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154 | iterator (Map& pmap, const KeyIt& pit) : map(&pmap), it(pit) {} |
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155 | |
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156 | public: |
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157 | |
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158 | /** Default constructor. |
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159 | */ |
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160 | iterator() {} |
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161 | |
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162 | typedef extended_pair<const Key&, const Key&, |
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163 | Value&, Value&> Reference; |
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164 | |
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165 | /** Dereference operator for map. |
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166 | */ |
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167 | Reference operator*() { |
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168 | return Reference(it, (*map)[it]); |
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169 | } |
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170 | |
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171 | class Pointer { |
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172 | friend class iterator; |
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173 | private: |
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174 | Reference data; |
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175 | Pointer(const Key& key, Value& val) : data(key, val) {} |
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176 | public: |
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177 | Reference* operator->() {return &data;} |
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178 | }; |
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179 | |
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180 | /** Arrow operator for map. |
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181 | */ |
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182 | Pointer operator->() { |
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183 | return Pointer(it, ((*map)[it])); |
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184 | } |
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185 | |
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186 | /** The pre increment operator of the map. |
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187 | */ |
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188 | iterator& operator++() { |
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189 | map->getGraph()->next(it); |
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190 | return *this; |
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191 | } |
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192 | |
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193 | /** The post increment operator of the map. |
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194 | */ |
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195 | iterator operator++(int) { |
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196 | iterator tmp(it); |
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197 | map.getGraph()->next(it); |
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198 | return tmp; |
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199 | } |
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200 | |
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201 | /** The equality operator of the map. |
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202 | */ |
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203 | bool operator==(const_iterator p_it) { |
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204 | return p_it.it == it; |
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205 | } |
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206 | |
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207 | /** The not-equality operator of the map. |
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208 | */ |
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209 | bool operator!=(const_iterator p_it) { |
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210 | return !(*this == p_it); |
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211 | } |
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212 | |
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213 | |
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214 | private: |
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215 | Map* map; |
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216 | KeyIt it; |
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217 | }; |
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218 | |
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219 | /** Returns the begin iterator of the map. |
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220 | */ |
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221 | iterator begin() { |
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222 | return iterator(*this, KeyIt(*getGraph())); |
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223 | } |
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224 | |
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225 | /** Returns the end iterator of the map. |
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226 | */ |
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227 | iterator end() { |
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228 | return iterator(*this, INVALID); |
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229 | } |
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230 | |
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231 | class const_iterator { |
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232 | friend class Map; |
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233 | friend class iterator; |
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234 | private: |
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235 | |
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236 | /** Private constructor to initalize the the iterators returned |
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237 | * by the begin() and end(). |
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238 | */ |
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239 | const_iterator (const Map& pmap, const KeyIt& pit) |
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240 | : map(&pmap), it(pit) {} |
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241 | |
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242 | public: |
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243 | |
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244 | /** Default constructor. |
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245 | */ |
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246 | const_iterator() {} |
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247 | |
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248 | /** Constructor to convert iterator to const_iterator. |
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249 | */ |
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250 | const_iterator(iterator p_it) : map(p_it.map), it(p_it.it) {} |
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251 | |
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252 | typedef extended_pair<const Key&, const Key&, |
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253 | const Value&, const Value&> Reference; |
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254 | |
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255 | /** Dereference operator for map. |
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256 | */ |
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257 | Reference operator*() { |
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258 | return Reference(it, (*map)[it]); |
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259 | } |
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260 | |
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261 | |
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262 | class Pointer { |
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263 | friend class const_iterator; |
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264 | private: |
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265 | Reference data; |
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266 | Pointer(const Key& key, const Value& val) : data(key, val) {} |
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267 | public: |
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268 | Reference* operator->() {return &data;} |
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269 | }; |
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270 | |
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271 | /** Arrow operator for map. |
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272 | */ |
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273 | Pointer operator->() { |
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274 | return Pointer(it, ((*map)[it])); |
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275 | } |
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276 | |
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277 | /** The pre increment operator of the map. |
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278 | */ |
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279 | const_iterator& operator++() { |
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280 | map->getGraph()->next(it); |
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281 | return *this; |
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282 | } |
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283 | |
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284 | /** The post increment operator of the map. |
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285 | */ |
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286 | const_iterator operator++(int) { |
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287 | const_iterator tmp(it); |
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288 | map->getGraph()->next(it); |
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289 | return tmp; |
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290 | } |
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291 | |
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292 | /** The equality operator of the map. |
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293 | */ |
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294 | bool operator==(const_iterator p_it) { |
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295 | return p_it.it == it; |
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296 | } |
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297 | |
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298 | /** The not-equality operator of the map. |
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299 | */ |
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300 | bool operator!=(const_iterator p_it) { |
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301 | return !(*this == p_it); |
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302 | } |
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303 | |
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304 | |
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305 | private: |
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306 | const Map* map; |
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307 | KeyIt it; |
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308 | }; |
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309 | |
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310 | /** Returns the begin const_iterator of the map. |
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311 | */ |
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312 | const_iterator begin() const { |
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313 | return const_iterator(*this, KeyIt(*getGraph())); |
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314 | } |
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315 | |
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316 | /** Returns the end const_iterator of the map. |
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317 | */ |
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318 | const_iterator end() const { |
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319 | return const_iterator(*this, INVALID); |
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320 | } |
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321 | |
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322 | private: |
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323 | |
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324 | Container container; |
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325 | |
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326 | }; |
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327 | |
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328 | }; |
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329 | |
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330 | } |
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331 | |
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332 | #endif |
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