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lemon/bits/map_extender.h
changeset 245 da1d220b176b
parent 107 31a2e6d28f61
child 263 be8a861d3bb7
equal deleted inserted replaced
1:daf4fd41c318 2:7736d124e3df 
     1 /* -*- C++ -*-
 
     1 /* -*- mode: C++; indent-tabs-mode: nil; -*-
 
     2  *
 
     2  *
 
     3  * This file is a part of LEMON, a generic C++ optimization library
 
     3  * This file is a part of LEMON, a generic C++ optimization library.
 
     4  *
 
     4  *
 
     5  * Copyright (C) 2003-2008
 
     5  * Copyright (C) 2003-2008
 
     6  * Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport
 
     6  * Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport
 
     7  * (Egervary Research Group on Combinatorial Optimization, EGRES).
 
     7  * (Egervary Research Group on Combinatorial Optimization, EGRES).
 
     8  *
 
     8  *
 
    30 ///\brief Extenders for iterable maps.
 
    30 ///\brief Extenders for iterable maps.
 
    31 
    31 
    32 namespace lemon {
 
    32 namespace lemon {
 
    33 
    33 
    34   /// \ingroup graphbits
 
    34   /// \ingroup graphbits
 
    35   /// 
    35   ///
 
    36   /// \brief Extender for maps
 
    36   /// \brief Extender for maps
 
    37   template <typename _Map>
 
    37   template <typename _Map>
 
    38   class MapExtender : public _Map {
 
    38   class MapExtender : public _Map {
 
    39   public:
 
    39   public:
 
    40 
    40 
    54     friend class MapIt;
 
    54     friend class MapIt;
 
    55     friend class ConstMapIt;
 
    55     friend class ConstMapIt;
 
    56 
    56 
    57   public:
 
    57   public:
 
    58 
    58 
    59     MapExtender(const Graph& graph) 
    59     MapExtender(const Graph& graph)
 
    60       : Parent(graph) {}
 
    60       : Parent(graph) {}
 
    61 
    61 
    62     MapExtender(const Graph& graph, const Value& value) 
    62     MapExtender(const Graph& graph, const Value& value)
 
    63       : Parent(graph, value) {}
 
    63       : Parent(graph, value) {}
 
    64 
    64 
    65     MapExtender& operator=(const MapExtender& cmap) {
 
    65     MapExtender& operator=(const MapExtender& cmap) {
 
    66       return operator=<MapExtender>(cmap);
 
    66       return operator=<MapExtender>(cmap);
 
    67     }
 
    67     }
 
    68 
    68 
    69     template <typename CMap>
 
    69     template <typename CMap>
 
    70     MapExtender& operator=(const CMap& cmap) {
 
    70     MapExtender& operator=(const CMap& cmap) {
 
    71       Parent::operator=(cmap);
 
    71       Parent::operator=(cmap);
 
    72       return *this;
 
    72       return *this;
 
    73     } 
    73     }
 
    74 
    74 
    75     class MapIt : public Item {
 
    75     class MapIt : public Item {
 
    76     public:
 
    76     public:
 
    77       
    77 
    78       typedef Item Parent;
 
    78       typedef Item Parent;
 
    79       typedef typename Map::Value Value;
 
    79       typedef typename Map::Value Value;
 
    80       
    80 
    81       MapIt() {}
 
    81       MapIt() {}
 
    82 
    82 
    83       MapIt(Invalid i) : Parent(i) { }
 
    83       MapIt(Invalid i) : Parent(i) { }
 
    84 
    84 
    85       explicit MapIt(Map& _map) : map(_map) {
 
    85       explicit MapIt(Map& _map) : map(_map) {
 
    86         map.notifier()->first(*this);
 
    86         map.notifier()->first(*this);
 
    87       }
 
    87       }
 
    88 
    88 
    89       MapIt(const Map& _map, const Item& item) 
    89       MapIt(const Map& _map, const Item& item)
 
    90 	: Parent(item), map(_map) {}
 
    90         : Parent(item), map(_map) {}
 
    91 
    91 
    92       MapIt& operator++() { 
    92       MapIt& operator++() {
 
    93 	map.notifier()->next(*this);
 
    93         map.notifier()->next(*this);
 
    94 	return *this; 
    94         return *this;
 
    95       }
 
    95       }
 
    96       
    96 
    97       typename MapTraits<Map>::ConstReturnValue operator*() const {
 
    97       typename MapTraits<Map>::ConstReturnValue operator*() const {
 
    98 	return map[*this];
 
    98         return map[*this];
 
    99       }
 
    99       }
 
   100 
   100 
   101       typename MapTraits<Map>::ReturnValue operator*() {
 
   101       typename MapTraits<Map>::ReturnValue operator*() {
 
   102 	return map[*this];
 
   102         return map[*this];
 
   103       }
 
   103       }
 
   104       
   104 
   105       void set(const Value& value) {
 
   105       void set(const Value& value) {
 
   106 	map.set(*this, value);
 
   106         map.set(*this, value);
 
   107       }
 
   107       }
 
   108       
   108 
   109     protected:
 
   109     protected:
 
   110       Map& map;
 
   110       Map& map;
 
   111       
   111 
   112     };
 
   112     };
 
   113 
   113 
   114     class ConstMapIt : public Item {
 
   114     class ConstMapIt : public Item {
 
   115     public:
 
   115     public:
 
   116 
   116 
   117       typedef Item Parent;
 
   117       typedef Item Parent;
 
   118 
   118 
   119       typedef typename Map::Value Value;
 
   119       typedef typename Map::Value Value;
 
   120       
   120 
   121       ConstMapIt() {}
 
   121       ConstMapIt() {}
 
   122 
   122 
   123       ConstMapIt(Invalid i) : Parent(i) { }
 
   123       ConstMapIt(Invalid i) : Parent(i) { }
 
   124 
   124 
   125       explicit ConstMapIt(Map& _map) : map(_map) {
 
   125       explicit ConstMapIt(Map& _map) : map(_map) {
 
   126         map.notifier()->first(*this);
 
   126         map.notifier()->first(*this);
 
   127       }
 
   127       }
 
   128 
   128 
   129       ConstMapIt(const Map& _map, const Item& item) 
   129       ConstMapIt(const Map& _map, const Item& item)
 
   130 	: Parent(item), map(_map) {}
 
   130         : Parent(item), map(_map) {}
 
   131 
   131 
   132       ConstMapIt& operator++() { 
   132       ConstMapIt& operator++() {
 
   133 	map.notifier()->next(*this);
 
   133         map.notifier()->next(*this);
 
   134 	return *this; 
   134         return *this;
 
   135       }
 
   135       }
 
   136 
   136 
   137       typename MapTraits<Map>::ConstReturnValue operator*() const {
 
   137       typename MapTraits<Map>::ConstReturnValue operator*() const {
 
   138 	return map[*this];
 
   138         return map[*this];
 
   139       }
 
   139       }
 
   140 
   140 
   141     protected:
 
   141     protected:
 
   142       const Map& map;
 
   142       const Map& map;
 
   143     };
 
   143     };
 
   144 
   144 
   145     class ItemIt : public Item {
 
   145     class ItemIt : public Item {
 
   146     public:
 
   146     public:
 
   147       
   147 
   148       typedef Item Parent;
 
   148       typedef Item Parent;
 
   149       
   149 
   150       ItemIt() {}
 
   150       ItemIt() {}
 
   151 
   151 
   152       ItemIt(Invalid i) : Parent(i) { }
 
   152       ItemIt(Invalid i) : Parent(i) { }
 
   153 
   153 
   154       explicit ItemIt(Map& _map) : map(_map) {
 
   154       explicit ItemIt(Map& _map) : map(_map) {
 
   155         map.notifier()->first(*this);
 
   155         map.notifier()->first(*this);
 
   156       }
 
   156       }
 
   157 
   157 
   158       ItemIt(const Map& _map, const Item& item) 
   158       ItemIt(const Map& _map, const Item& item)
 
   159 	: Parent(item), map(_map) {}
 
   159         : Parent(item), map(_map) {}
 
   160 
   160 
   161       ItemIt& operator++() { 
   161       ItemIt& operator++() {
 
   162 	map.notifier()->next(*this);
 
   162         map.notifier()->next(*this);
 
   163 	return *this; 
   163         return *this;
 
   164       }
 
   164       }
 
   165 
   165 
   166     protected:
 
   166     protected:
 
   167       const Map& map;
 
   167       const Map& map;
 
   168       
   168 
   169     };
 
   169     };
 
   170   };
 
   170   };
 
   171 
   171 
   172   /// \ingroup graphbits
 
   172   /// \ingroup graphbits
 
   173   /// 
   173   ///
 
   174   /// \brief Extender for maps which use a subset of the items.
 
   174   /// \brief Extender for maps which use a subset of the items.
 
   175   template <typename _Graph, typename _Map>
 
   175   template <typename _Graph, typename _Map>
 
   176   class SubMapExtender : public _Map {
 
   176   class SubMapExtender : public _Map {
 
   177   public:
 
   177   public:
 
   178 
   178 
   192     friend class MapIt;
 
   192     friend class MapIt;
 
   193     friend class ConstMapIt;
 
   193     friend class ConstMapIt;
 
   194 
   194 
   195   public:
 
   195   public:
 
   196 
   196 
   197     SubMapExtender(const Graph& _graph) 
   197     SubMapExtender(const Graph& _graph)
 
   198       : Parent(_graph), graph(_graph) {}
 
   198       : Parent(_graph), graph(_graph) {}
 
   199 
   199 
   200     SubMapExtender(const Graph& _graph, const Value& _value) 
   200     SubMapExtender(const Graph& _graph, const Value& _value)
 
   201       : Parent(_graph, _value), graph(_graph) {}
 
   201       : Parent(_graph, _value), graph(_graph) {}
 
   202 
   202 
   203     SubMapExtender& operator=(const SubMapExtender& cmap) {
 
   203     SubMapExtender& operator=(const SubMapExtender& cmap) {
 
   204       return operator=<MapExtender>(cmap);
 
   204       return operator=<MapExtender>(cmap);
 
   205     }
 
   205     }
 
   210       Item it;
 
   210       Item it;
 
   211       for (graph.first(it); it != INVALID; graph.next(it)) {
 
   211       for (graph.first(it); it != INVALID; graph.next(it)) {
 
   212         Parent::set(it, cmap[it]);
 
   212         Parent::set(it, cmap[it]);
 
   213       }
 
   213       }
 
   214       return *this;
 
   214       return *this;
 
   215     } 
   215     }
 
   216 
   216 
   217     class MapIt : public Item {
 
   217     class MapIt : public Item {
 
   218     public:
 
   218     public:
 
   219       
   219 
   220       typedef Item Parent;
 
   220       typedef Item Parent;
 
   221       typedef typename Map::Value Value;
 
   221       typedef typename Map::Value Value;
 
   222       
   222 
   223       MapIt() {}
 
   223       MapIt() {}
 
   224 
   224 
   225       MapIt(Invalid i) : Parent(i) { }
 
   225       MapIt(Invalid i) : Parent(i) { }
 
   226 
   226 
   227       explicit MapIt(Map& _map) : map(_map) {
 
   227       explicit MapIt(Map& _map) : map(_map) {
 
   228         map.graph.first(*this);
 
   228         map.graph.first(*this);
 
   229       }
 
   229       }
 
   230 
   230 
   231       MapIt(const Map& _map, const Item& item) 
   231       MapIt(const Map& _map, const Item& item)
 
   232 	: Parent(item), map(_map) {}
 
   232         : Parent(item), map(_map) {}
 
   233 
   233 
   234       MapIt& operator++() { 
   234       MapIt& operator++() {
 
   235 	map.graph.next(*this);
 
   235         map.graph.next(*this);
 
   236 	return *this; 
   236         return *this;
 
   237       }
 
   237       }
 
   238       
   238 
   239       typename MapTraits<Map>::ConstReturnValue operator*() const {
 
   239       typename MapTraits<Map>::ConstReturnValue operator*() const {
 
   240 	return map[*this];
 
   240         return map[*this];
 
   241       }
 
   241       }
 
   242 
   242 
   243       typename MapTraits<Map>::ReturnValue operator*() {
 
   243       typename MapTraits<Map>::ReturnValue operator*() {
 
   244 	return map[*this];
 
   244         return map[*this];
 
   245       }
 
   245       }
 
   246       
   246 
   247       void set(const Value& value) {
 
   247       void set(const Value& value) {
 
   248 	map.set(*this, value);
 
   248         map.set(*this, value);
 
   249       }
 
   249       }
 
   250       
   250 
   251     protected:
 
   251     protected:
 
   252       Map& map;
 
   252       Map& map;
 
   253       
   253 
   254     };
 
   254     };
 
   255 
   255 
   256     class ConstMapIt : public Item {
 
   256     class ConstMapIt : public Item {
 
   257     public:
 
   257     public:
 
   258 
   258 
   259       typedef Item Parent;
 
   259       typedef Item Parent;
 
   260 
   260 
   261       typedef typename Map::Value Value;
 
   261       typedef typename Map::Value Value;
 
   262       
   262 
   263       ConstMapIt() {}
 
   263       ConstMapIt() {}
 
   264 
   264 
   265       ConstMapIt(Invalid i) : Parent(i) { }
 
   265       ConstMapIt(Invalid i) : Parent(i) { }
 
   266 
   266 
   267       explicit ConstMapIt(Map& _map) : map(_map) {
 
   267       explicit ConstMapIt(Map& _map) : map(_map) {
 
   268         map.graph.first(*this);
 
   268         map.graph.first(*this);
 
   269       }
 
   269       }
 
   270 
   270 
   271       ConstMapIt(const Map& _map, const Item& item) 
   271       ConstMapIt(const Map& _map, const Item& item)
 
   272 	: Parent(item), map(_map) {}
 
   272         : Parent(item), map(_map) {}
 
   273 
   273 
   274       ConstMapIt& operator++() { 
   274       ConstMapIt& operator++() {
 
   275 	map.graph.next(*this);
 
   275         map.graph.next(*this);
 
   276 	return *this; 
   276         return *this;
 
   277       }
 
   277       }
 
   278 
   278 
   279       typename MapTraits<Map>::ConstReturnValue operator*() const {
 
   279       typename MapTraits<Map>::ConstReturnValue operator*() const {
 
   280 	return map[*this];
 
   280         return map[*this];
 
   281       }
 
   281       }
 
   282 
   282 
   283     protected:
 
   283     protected:
 
   284       const Map& map;
 
   284       const Map& map;
 
   285     };
 
   285     };
 
   286 
   286 
   287     class ItemIt : public Item {
 
   287     class ItemIt : public Item {
 
   288     public:
 
   288     public:
 
   289       
   289 
   290       typedef Item Parent;
 
   290       typedef Item Parent;
 
   291       
   291 
   292       ItemIt() {}
 
   292       ItemIt() {}
 
   293 
   293 
   294       ItemIt(Invalid i) : Parent(i) { }
 
   294       ItemIt(Invalid i) : Parent(i) { }
 
   295 
   295 
   296       explicit ItemIt(Map& _map) : map(_map) {
 
   296       explicit ItemIt(Map& _map) : map(_map) {
 
   297         map.graph.first(*this);
 
   297         map.graph.first(*this);
 
   298       }
 
   298       }
 
   299 
   299 
   300       ItemIt(const Map& _map, const Item& item) 
   300       ItemIt(const Map& _map, const Item& item)
 
   301 	: Parent(item), map(_map) {}
 
   301         : Parent(item), map(_map) {}
 
   302 
   302 
   303       ItemIt& operator++() { 
   303       ItemIt& operator++() {
 
   304 	map.graph.next(*this);
 
   304         map.graph.next(*this);
 
   305 	return *this; 
   305         return *this;
 
   306       }
 
   306       }
 
   307 
   307 
   308     protected:
 
   308     protected:
 
   309       const Map& map;
 
   309       const Map& map;
 
   310       
   310 
   311     };
 
   311     };
 
   312     
   312 
   313   private:
 
   313   private:
 
   314 
   314 
   315     const Graph& graph;
 
   315     const Graph& graph;
 
   316     
   316 
   317   };
 
   317   };
 
   318 
   318 
   319 }
 
   319 }
 
   320 
   320 
   321 #endif
 
   321 #endif
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