1 | // -*- mode:C++ -*- |
---|
2 | |
---|
3 | #ifndef HUGO_SMART_GRAPH_H |
---|
4 | #define HUGO_SMART_GRAPH_H |
---|
5 | |
---|
6 | ///\file |
---|
7 | ///\brief SmartGraph and SymSmartGraph classes. |
---|
8 | |
---|
9 | #include <vector> |
---|
10 | #include <limits.h> |
---|
11 | |
---|
12 | #include "invalid.h" |
---|
13 | |
---|
14 | namespace hugo { |
---|
15 | |
---|
16 | class SymSmartGraph; |
---|
17 | |
---|
18 | ///A smart graph class. |
---|
19 | |
---|
20 | ///This is a simple and fast graph implementation. |
---|
21 | ///It is also quite memory efficient, but at the price |
---|
22 | ///that <b> it does not support node and edge deletion</b>. |
---|
23 | ///It conforms to the graph interface documented under |
---|
24 | ///the description of \ref GraphSkeleton. |
---|
25 | ///\sa \ref GraphSkeleton. |
---|
26 | class SmartGraph { |
---|
27 | |
---|
28 | struct NodeT |
---|
29 | { |
---|
30 | int first_in,first_out; |
---|
31 | NodeT() : first_in(-1), first_out(-1) {} |
---|
32 | }; |
---|
33 | struct EdgeT |
---|
34 | { |
---|
35 | int head, tail, next_in, next_out; |
---|
36 | //FIXME: is this necessary? |
---|
37 | EdgeT() : next_in(-1), next_out(-1) {} |
---|
38 | }; |
---|
39 | |
---|
40 | std::vector<NodeT> nodes; |
---|
41 | |
---|
42 | std::vector<EdgeT> edges; |
---|
43 | |
---|
44 | protected: |
---|
45 | |
---|
46 | template <typename Key> class DynMapBase |
---|
47 | { |
---|
48 | protected: |
---|
49 | const SmartGraph* G; |
---|
50 | public: |
---|
51 | virtual void add(const Key k) = NULL; |
---|
52 | virtual void erase(const Key k) = NULL; |
---|
53 | DynMapBase(const SmartGraph &_G) : G(&_G) {} |
---|
54 | virtual ~DynMapBase() {} |
---|
55 | friend class SmartGraph; |
---|
56 | }; |
---|
57 | |
---|
58 | public: |
---|
59 | template <typename T> class EdgeMap; |
---|
60 | template <typename T> class EdgeMap; |
---|
61 | |
---|
62 | class Node; |
---|
63 | class Edge; |
---|
64 | |
---|
65 | // protected: |
---|
66 | // HELPME: |
---|
67 | protected: |
---|
68 | ///\bug It must be public because of SymEdgeMap. |
---|
69 | /// |
---|
70 | mutable std::vector<DynMapBase<Node> * > dyn_node_maps; |
---|
71 | ///\bug It must be public because of SymEdgeMap. |
---|
72 | /// |
---|
73 | mutable std::vector<DynMapBase<Edge> * > dyn_edge_maps; |
---|
74 | |
---|
75 | public: |
---|
76 | |
---|
77 | class NodeIt; |
---|
78 | class EdgeIt; |
---|
79 | class OutEdgeIt; |
---|
80 | class InEdgeIt; |
---|
81 | |
---|
82 | // class Node { int n; }; |
---|
83 | // class NodeIt : public Node { }; |
---|
84 | // class Edge { int n; }; |
---|
85 | // class EdgeIt : public Edge {}; |
---|
86 | // class OutEdgeIt : public Edge {}; |
---|
87 | // class InEdgeIt : public Edge {}; |
---|
88 | // class SymEdge; |
---|
89 | |
---|
90 | template <typename T> class NodeMap; |
---|
91 | template <typename T> class EdgeMap; |
---|
92 | |
---|
93 | public: |
---|
94 | |
---|
95 | /* default constructor */ |
---|
96 | |
---|
97 | SmartGraph() : nodes(), edges() { } |
---|
98 | SmartGraph(const SmartGraph &_g) : nodes(_g.nodes), edges(_g.edges) { } |
---|
99 | |
---|
100 | ~SmartGraph() |
---|
101 | { |
---|
102 | for(std::vector<DynMapBase<Node> * >::iterator i=dyn_node_maps.begin(); |
---|
103 | i!=dyn_node_maps.end(); ++i) (**i).G=NULL; |
---|
104 | for(std::vector<DynMapBase<Edge> * >::iterator i=dyn_edge_maps.begin(); |
---|
105 | i!=dyn_edge_maps.end(); ++i) (**i).G=NULL; |
---|
106 | } |
---|
107 | |
---|
108 | int nodeNum() const { return nodes.size(); } //FIXME: What is this? |
---|
109 | int edgeNum() const { return edges.size(); } //FIXME: What is this? |
---|
110 | |
---|
111 | ///\bug This function does something different than |
---|
112 | ///its name would suggests... |
---|
113 | int maxNodeId() const { return nodes.size(); } //FIXME: What is this? |
---|
114 | ///\bug This function does something different than |
---|
115 | ///its name would suggests... |
---|
116 | int maxEdgeId() const { return edges.size(); } //FIXME: What is this? |
---|
117 | |
---|
118 | Node tail(Edge e) const { return edges[e.n].tail; } |
---|
119 | Node head(Edge e) const { return edges[e.n].head; } |
---|
120 | |
---|
121 | // Marci |
---|
122 | Node aNode(OutEdgeIt e) const { return edges[e.n].tail; } |
---|
123 | Node aNode(InEdgeIt e) const { return edges[e.n].head; } |
---|
124 | // //Node aNode(const SymEdge& e) const { return e.aNode(); } |
---|
125 | |
---|
126 | // Marci |
---|
127 | Node bNode(OutEdgeIt e) const { return edges[e.n].head; } |
---|
128 | Node bNode(InEdgeIt e) const { return edges[e.n].tail; } |
---|
129 | // //Node bNode(const SymEdge& e) const { return e.bNode(); } |
---|
130 | |
---|
131 | NodeIt& first(NodeIt& v) const { |
---|
132 | v=NodeIt(*this); return v; } |
---|
133 | EdgeIt& first(EdgeIt& e) const { |
---|
134 | e=EdgeIt(*this); return e; } |
---|
135 | OutEdgeIt& first(OutEdgeIt& e, const Node v) const { |
---|
136 | e=OutEdgeIt(*this,v); return e; } |
---|
137 | InEdgeIt& first(InEdgeIt& e, const Node v) const { |
---|
138 | e=InEdgeIt(*this,v); return e; } |
---|
139 | |
---|
140 | template< typename It > |
---|
141 | It first() const { It e; first(e); return e; } |
---|
142 | |
---|
143 | template< typename It > |
---|
144 | It first(Node v) const { It e; first(e,v); return e; } |
---|
145 | |
---|
146 | bool valid(Edge e) const { return e.n!=-1; } |
---|
147 | bool valid(Node n) const { return n.n!=-1; } |
---|
148 | |
---|
149 | void setInvalid(Edge &e) { e.n=-1; } |
---|
150 | void setInvalid(Node &n) { n.n=-1; } |
---|
151 | |
---|
152 | template <typename It> It getNext(It it) const |
---|
153 | { It tmp(it); return next(tmp); } |
---|
154 | |
---|
155 | NodeIt& next(NodeIt& it) const { |
---|
156 | it.n=(it.n+2)%(nodes.size()+1)-1; |
---|
157 | return it; |
---|
158 | } |
---|
159 | OutEdgeIt& next(OutEdgeIt& it) const |
---|
160 | { it.n=edges[it.n].next_out; return it; } |
---|
161 | InEdgeIt& next(InEdgeIt& it) const |
---|
162 | { it.n=edges[it.n].next_in; return it; } |
---|
163 | EdgeIt& next(EdgeIt& it) const { --it.n; return it; } |
---|
164 | |
---|
165 | int id(Node v) const { return v.n; } |
---|
166 | int id(Edge e) const { return e.n; } |
---|
167 | |
---|
168 | Node addNode() { |
---|
169 | Node n; n.n=nodes.size(); |
---|
170 | nodes.push_back(NodeT()); //FIXME: Hmmm... |
---|
171 | |
---|
172 | for(std::vector<DynMapBase<Node> * >::iterator i=dyn_node_maps.begin(); |
---|
173 | i!=dyn_node_maps.end(); ++i) (**i).add(n.n); |
---|
174 | |
---|
175 | return n; |
---|
176 | } |
---|
177 | |
---|
178 | Edge addEdge(Node u, Node v) { |
---|
179 | Edge e; e.n=edges.size(); edges.push_back(EdgeT()); //FIXME: Hmmm... |
---|
180 | edges[e.n].tail=u.n; edges[e.n].head=v.n; |
---|
181 | edges[e.n].next_out=nodes[u.n].first_out; |
---|
182 | edges[e.n].next_in=nodes[v.n].first_in; |
---|
183 | nodes[u.n].first_out=nodes[v.n].first_in=e.n; |
---|
184 | |
---|
185 | for(std::vector<DynMapBase<Edge> * >::iterator i=dyn_edge_maps.begin(); |
---|
186 | i!=dyn_edge_maps.end(); ++i) (**i).add(e); |
---|
187 | |
---|
188 | return e; |
---|
189 | } |
---|
190 | |
---|
191 | void clear() {nodes.clear();edges.clear();} |
---|
192 | |
---|
193 | class Node { |
---|
194 | friend class SmartGraph; |
---|
195 | template <typename T> friend class NodeMap; |
---|
196 | |
---|
197 | friend class Edge; |
---|
198 | friend class OutEdgeIt; |
---|
199 | friend class InEdgeIt; |
---|
200 | friend class SymEdge; |
---|
201 | |
---|
202 | protected: |
---|
203 | int n; |
---|
204 | friend int SmartGraph::id(Node v) const; |
---|
205 | Node(int nn) {n=nn;} |
---|
206 | public: |
---|
207 | Node() {} |
---|
208 | Node (Invalid i) { n=-1; } |
---|
209 | bool operator==(const Node i) const {return n==i.n;} |
---|
210 | bool operator!=(const Node i) const {return n!=i.n;} |
---|
211 | bool operator<(const Node i) const {return n<i.n;} |
---|
212 | }; |
---|
213 | |
---|
214 | class NodeIt : public Node { |
---|
215 | friend class SmartGraph; |
---|
216 | public: |
---|
217 | NodeIt(const SmartGraph& G) : Node(G.nodes.size()?0:-1) { } |
---|
218 | NodeIt() : Node() { } |
---|
219 | }; |
---|
220 | |
---|
221 | class Edge { |
---|
222 | friend class SmartGraph; |
---|
223 | template <typename T> friend class EdgeMap; |
---|
224 | |
---|
225 | //template <typename T> friend class SymSmartGraph::SymEdgeMap; |
---|
226 | //friend Edge SymSmartGraph::opposite(Edge) const; |
---|
227 | |
---|
228 | friend class Node; |
---|
229 | friend class NodeIt; |
---|
230 | protected: |
---|
231 | int n; |
---|
232 | friend int SmartGraph::id(Edge e) const; |
---|
233 | |
---|
234 | Edge(int nn) {n=nn;} |
---|
235 | public: |
---|
236 | Edge() { } |
---|
237 | Edge (Invalid) { n=-1; } |
---|
238 | bool operator==(const Edge i) const {return n==i.n;} |
---|
239 | bool operator!=(const Edge i) const {return n!=i.n;} |
---|
240 | bool operator<(const Edge i) const {return n<i.n;} |
---|
241 | ///\bug This is a workaround until somebody tells me how to |
---|
242 | ///make class \c SymSmartGraph::SymEdgeMap friend of Edge |
---|
243 | int &idref() {return n;} |
---|
244 | const int &idref() const {return n;} |
---|
245 | }; |
---|
246 | |
---|
247 | class EdgeIt : public Edge { |
---|
248 | friend class SmartGraph; |
---|
249 | public: |
---|
250 | EdgeIt(const SmartGraph& G) : Edge(G.edges.size()-1) { } |
---|
251 | EdgeIt (Invalid i) : Edge(i) { } |
---|
252 | EdgeIt() : Edge() { } |
---|
253 | ///\bug This is a workaround until somebody tells me how to |
---|
254 | ///make class \c SymSmartGraph::SymEdgeMap friend of Edge |
---|
255 | int &idref() {return n;} |
---|
256 | }; |
---|
257 | |
---|
258 | class OutEdgeIt : public Edge { |
---|
259 | friend class SmartGraph; |
---|
260 | public: |
---|
261 | OutEdgeIt() : Edge() { } |
---|
262 | OutEdgeIt (Invalid i) : Edge(i) { } |
---|
263 | |
---|
264 | OutEdgeIt(const SmartGraph& G,const Node v) |
---|
265 | : Edge(G.nodes[v.n].first_out) {} |
---|
266 | }; |
---|
267 | |
---|
268 | class InEdgeIt : public Edge { |
---|
269 | friend class SmartGraph; |
---|
270 | public: |
---|
271 | InEdgeIt() : Edge() { } |
---|
272 | InEdgeIt (Invalid i) : Edge(i) { } |
---|
273 | InEdgeIt(const SmartGraph& G,Node v) :Edge(G.nodes[v.n].first_in){} |
---|
274 | }; |
---|
275 | |
---|
276 | // Map types |
---|
277 | |
---|
278 | // // Static Maps are not necessary. |
---|
279 | // template <typename T> |
---|
280 | // class NodeMap { |
---|
281 | // const SmartGraph& G; |
---|
282 | // std::vector<T> container; |
---|
283 | // public: |
---|
284 | // typedef T ValueType; |
---|
285 | // typedef Node KeyType; |
---|
286 | // NodeMap(const SmartGraph& _G) : G(_G), container(G.maxNodeId()) { } |
---|
287 | // NodeMap(const SmartGraph& _G, T a) : |
---|
288 | // G(_G), container(G.maxNodeId(), a) { } |
---|
289 | // void set(Node n, T a) { container[n.n]=a; } |
---|
290 | // T get(Node n) const { return container[n.n]; } |
---|
291 | // T& operator[](Node n) { return container[n.n]; } |
---|
292 | // const T& operator[](Node n) const { return container[n.n]; } |
---|
293 | // void update() { container.resize(G.maxNodeId()); } |
---|
294 | // void update(T a) { container.resize(G.maxNodeId(), a); } |
---|
295 | // }; |
---|
296 | |
---|
297 | // template <typename T> |
---|
298 | // class EdgeMap { |
---|
299 | // const SmartGraph& G; |
---|
300 | // std::vector<T> container; |
---|
301 | // public: |
---|
302 | // typedef T ValueType; |
---|
303 | // typedef Edge KeyType; |
---|
304 | // EdgeMap(const SmartGraph& _G) : G(_G), container(G.maxEdgeId()) { } |
---|
305 | // EdgeMap(const SmartGraph& _G, T a) : |
---|
306 | // G(_G), container(G.maxEdgeId(), a) { } |
---|
307 | // void set(Edge e, T a) { container[e.n]=a; } |
---|
308 | // T get(Edge e) const { return container[e.n]; } |
---|
309 | // T& operator[](Edge e) { return container[e.n]; } |
---|
310 | // const T& operator[](Edge e) const { return container[e.n]; } |
---|
311 | // void update() { container.resize(G.maxEdgeId()); } |
---|
312 | // void update(T a) { container.resize(G.maxEdgeId(), a); } |
---|
313 | // }; |
---|
314 | |
---|
315 | template <typename T> class NodeMap : public DynMapBase<Node> |
---|
316 | { |
---|
317 | std::vector<T> container; |
---|
318 | |
---|
319 | public: |
---|
320 | typedef T ValueType; |
---|
321 | typedef Node KeyType; |
---|
322 | |
---|
323 | NodeMap(const SmartGraph &_G) : |
---|
324 | DynMapBase<Node>(_G), container(_G.maxNodeId()) |
---|
325 | { |
---|
326 | G->dyn_node_maps.push_back(this); |
---|
327 | } |
---|
328 | NodeMap(const SmartGraph &_G,const T &t) : |
---|
329 | DynMapBase<Node>(_G), container(_G.maxNodeId(),t) |
---|
330 | { |
---|
331 | G->dyn_node_maps.push_back(this); |
---|
332 | } |
---|
333 | |
---|
334 | NodeMap(const NodeMap<T> &m) : |
---|
335 | DynMapBase<Node>(*m.G), container(m.container) |
---|
336 | { |
---|
337 | G->dyn_node_maps.push_back(this); |
---|
338 | } |
---|
339 | |
---|
340 | template<typename TT> friend class NodeMap; |
---|
341 | |
---|
342 | ///\todo It can copy between different types. |
---|
343 | /// |
---|
344 | template<typename TT> NodeMap(const NodeMap<TT> &m) : |
---|
345 | DynMapBase<Node>(*m.G) |
---|
346 | { |
---|
347 | G->dyn_node_maps.push_back(this); |
---|
348 | typename std::vector<TT>::const_iterator i; |
---|
349 | for(typename std::vector<TT>::const_iterator i=m.container.begin(); |
---|
350 | i!=m.container.end(); |
---|
351 | i++) |
---|
352 | container.push_back(*i); |
---|
353 | } |
---|
354 | ~NodeMap() |
---|
355 | { |
---|
356 | if(G) { |
---|
357 | std::vector<DynMapBase<Node>* >::iterator i; |
---|
358 | for(i=G->dyn_node_maps.begin(); |
---|
359 | i!=G->dyn_node_maps.end() && *i!=this; ++i) ; |
---|
360 | //if(*i==this) G->dyn_node_maps.erase(i); //FIXME: Way too slow... |
---|
361 | //A better way to do that: (Is this really important?) |
---|
362 | if(*i==this) { |
---|
363 | *i=G->dyn_node_maps.back(); |
---|
364 | G->dyn_node_maps.pop_back(); |
---|
365 | } |
---|
366 | } |
---|
367 | } |
---|
368 | |
---|
369 | void add(const Node k) |
---|
370 | { |
---|
371 | if(k.n>=int(container.size())) container.resize(k.n+1); |
---|
372 | } |
---|
373 | |
---|
374 | void erase(const Node) { } |
---|
375 | |
---|
376 | void set(Node n, T a) { container[n.n]=a; } |
---|
377 | //T get(Node n) const { return container[n.n]; } |
---|
378 | //Hajjaj: |
---|
379 | //T& operator[](Node n) { return container[n.n]; } |
---|
380 | typename std::vector<T>::reference |
---|
381 | operator[](Node n) { return container[n.n]; } |
---|
382 | //const T& operator[](Node n) const { return container[n.n]; } |
---|
383 | typename std::vector<T>::const_reference |
---|
384 | operator[](Node n) const { return container[n.n]; } |
---|
385 | |
---|
386 | ///\warning There is no safety check at all! |
---|
387 | ///Using operator = between maps attached to different graph may |
---|
388 | ///cause serious problem. |
---|
389 | ///\todo Is this really so? |
---|
390 | ///\todo It can copy between different types. |
---|
391 | const NodeMap<T>& operator=(const NodeMap<T> &m) |
---|
392 | { |
---|
393 | container = m.container; |
---|
394 | return *this; |
---|
395 | } |
---|
396 | template<typename TT> |
---|
397 | const NodeMap<T>& operator=(const NodeMap<TT> &m) |
---|
398 | { |
---|
399 | copy(m.container.begin(), m.container.end(), container.begin()); |
---|
400 | return *this; |
---|
401 | } |
---|
402 | |
---|
403 | void update() {} //Useless for DynMaps |
---|
404 | void update(T a) {} //Useless for DynMaps |
---|
405 | }; |
---|
406 | |
---|
407 | template <typename T> class EdgeMap : public DynMapBase<Edge> |
---|
408 | { |
---|
409 | std::vector<T> container; |
---|
410 | |
---|
411 | public: |
---|
412 | typedef T ValueType; |
---|
413 | typedef Edge KeyType; |
---|
414 | |
---|
415 | EdgeMap(const SmartGraph &_G) : |
---|
416 | DynMapBase<Edge>(_G), container(_G.maxEdgeId()) |
---|
417 | { |
---|
418 | //FIXME: What if there are empty Id's? |
---|
419 | //FIXME: Can I use 'this' in a constructor? |
---|
420 | G->dyn_edge_maps.push_back(this); |
---|
421 | } |
---|
422 | EdgeMap(const SmartGraph &_G,const T &t) : |
---|
423 | DynMapBase<Edge>(_G), container(_G.maxEdgeId(),t) |
---|
424 | { |
---|
425 | G->dyn_edge_maps.push_back(this); |
---|
426 | } |
---|
427 | EdgeMap(const EdgeMap<T> &m) : |
---|
428 | DynMapBase<Edge>(*m.G), container(m.container) |
---|
429 | { |
---|
430 | G->dyn_node_maps.push_back(this); |
---|
431 | } |
---|
432 | |
---|
433 | template<typename TT> friend class EdgeMap; |
---|
434 | |
---|
435 | ///\todo It can copy between different types. |
---|
436 | /// |
---|
437 | template<typename TT> EdgeMap(const EdgeMap<TT> &m) : |
---|
438 | DynMapBase<Edge>(*m.G) |
---|
439 | { |
---|
440 | G->dyn_node_maps.push_back(this); |
---|
441 | typename std::vector<TT>::const_iterator i; |
---|
442 | for(typename std::vector<TT>::const_iterator i=m.container.begin(); |
---|
443 | i!=m.container.end(); |
---|
444 | i++) |
---|
445 | container.push_back(*i); |
---|
446 | } |
---|
447 | ~EdgeMap() |
---|
448 | { |
---|
449 | if(G) { |
---|
450 | std::vector<DynMapBase<Edge>* >::iterator i; |
---|
451 | for(i=G->dyn_edge_maps.begin(); |
---|
452 | i!=G->dyn_edge_maps.end() && *i!=this; ++i) ; |
---|
453 | //if(*i==this) G->dyn_edge_maps.erase(i); //Way too slow... |
---|
454 | //A better way to do that: (Is this really important?) |
---|
455 | if(*i==this) { |
---|
456 | *i=G->dyn_edge_maps.back(); |
---|
457 | G->dyn_edge_maps.pop_back(); |
---|
458 | } |
---|
459 | } |
---|
460 | } |
---|
461 | |
---|
462 | void add(const Edge k) |
---|
463 | { |
---|
464 | if(k.n>=int(container.size())) container.resize(k.n+1); |
---|
465 | } |
---|
466 | void erase(const Edge) { } |
---|
467 | |
---|
468 | void set(Edge n, T a) { container[n.n]=a; } |
---|
469 | //T get(Edge n) const { return container[n.n]; } |
---|
470 | typename std::vector<T>::reference |
---|
471 | operator[](Edge n) { return container[n.n]; } |
---|
472 | typename std::vector<T>::const_reference |
---|
473 | operator[](Edge n) const { return container[n.n]; } |
---|
474 | |
---|
475 | ///\warning There is no safety check at all! |
---|
476 | ///Using operator = between maps attached to different graph may |
---|
477 | ///cause serious problem. |
---|
478 | ///\todo Is this really so? |
---|
479 | ///\todo It can copy between different types. |
---|
480 | const EdgeMap<T>& operator=(const EdgeMap<T> &m) |
---|
481 | { |
---|
482 | container = m.container; |
---|
483 | return *this; |
---|
484 | } |
---|
485 | template<typename TT> |
---|
486 | const EdgeMap<T>& operator=(const EdgeMap<TT> &m) |
---|
487 | { |
---|
488 | copy(m.container.begin(), m.container.end(), container.begin()); |
---|
489 | return *this; |
---|
490 | } |
---|
491 | |
---|
492 | void update() {} //Useless for DynMaps |
---|
493 | void update(T a) {} //Useless for DynMaps |
---|
494 | }; |
---|
495 | |
---|
496 | }; |
---|
497 | |
---|
498 | ///Graph for bidirectional edges. |
---|
499 | |
---|
500 | ///The purpose of this graph structure is to handle graphs |
---|
501 | ///having bidirectional edges. Here the function \c addEdge(u,v) adds a pair |
---|
502 | ///of oppositely directed edges. |
---|
503 | ///There is a new edge map type called |
---|
504 | ///\ref SymSmartGraph::SymEdgeMap "SymEdgeMap" |
---|
505 | ///that complements this |
---|
506 | ///feature by |
---|
507 | ///storing shared values for the edge pairs. The usual |
---|
508 | ///\ref GraphSkeleton::EdgeMap "EdgeMap" |
---|
509 | ///can be used |
---|
510 | ///as well. |
---|
511 | /// |
---|
512 | ///The oppositely directed edge can also be obtained easily |
---|
513 | ///using \ref opposite. |
---|
514 | ///\warning It shares the similarity with \ref SmartGraph that |
---|
515 | ///it is not possible to delete edges or nodes from the graph. |
---|
516 | //\sa \ref SmartGraph. |
---|
517 | |
---|
518 | class SymSmartGraph : public SmartGraph |
---|
519 | { |
---|
520 | public: |
---|
521 | template<typename T> class SymEdgeMap; |
---|
522 | template<typename T> friend class SymEdgeMap; |
---|
523 | |
---|
524 | SymSmartGraph() : SmartGraph() { } |
---|
525 | SymSmartGraph(const SmartGraph &_g) : SmartGraph(_g) { } |
---|
526 | Edge addEdge(Node u, Node v) |
---|
527 | { |
---|
528 | Edge e = SmartGraph::addEdge(u,v); |
---|
529 | SmartGraph::addEdge(v,u); |
---|
530 | return e; |
---|
531 | } |
---|
532 | |
---|
533 | ///The oppositely directed edge. |
---|
534 | |
---|
535 | ///Returns the oppositely directed |
---|
536 | ///pair of the edge \c e. |
---|
537 | Edge opposite(Edge e) const |
---|
538 | { |
---|
539 | Edge f; |
---|
540 | f.idref() = e.idref() - 2*(e.idref()%2) + 1; |
---|
541 | return f; |
---|
542 | } |
---|
543 | |
---|
544 | ///Common data storage for the edge pairs. |
---|
545 | |
---|
546 | ///This map makes it possible to store data shared by the oppositely |
---|
547 | ///directed pairs of edges. |
---|
548 | template <typename T> class SymEdgeMap : public DynMapBase<Edge> |
---|
549 | { |
---|
550 | std::vector<T> container; |
---|
551 | |
---|
552 | public: |
---|
553 | typedef T ValueType; |
---|
554 | typedef Edge KeyType; |
---|
555 | |
---|
556 | SymEdgeMap(const SymSmartGraph &_G) : |
---|
557 | DynMapBase<Edge>(_G), container(_G.maxEdgeId()/2) |
---|
558 | { |
---|
559 | static_cast<const SymSmartGraph*>(G)->dyn_edge_maps.push_back(this); |
---|
560 | } |
---|
561 | SymEdgeMap(const SymSmartGraph &_G,const T &t) : |
---|
562 | DynMapBase<Edge>(_G), container(_G.maxEdgeId()/2,t) |
---|
563 | { |
---|
564 | G->dyn_edge_maps.push_back(this); |
---|
565 | } |
---|
566 | |
---|
567 | SymEdgeMap(const SymEdgeMap<T> &m) : |
---|
568 | DynMapBase<SymEdge>(*m.G), container(m.container) |
---|
569 | { |
---|
570 | G->dyn_node_maps.push_back(this); |
---|
571 | } |
---|
572 | |
---|
573 | // template<typename TT> friend class SymEdgeMap; |
---|
574 | |
---|
575 | ///\todo It can copy between different types. |
---|
576 | /// |
---|
577 | |
---|
578 | template<typename TT> SymEdgeMap(const SymEdgeMap<TT> &m) : |
---|
579 | DynMapBase<SymEdge>(*m.G) |
---|
580 | { |
---|
581 | G->dyn_node_maps.push_back(this); |
---|
582 | typename std::vector<TT>::const_iterator i; |
---|
583 | for(typename std::vector<TT>::const_iterator i=m.container.begin(); |
---|
584 | i!=m.container.end(); |
---|
585 | i++) |
---|
586 | container.push_back(*i); |
---|
587 | } |
---|
588 | |
---|
589 | ~SymEdgeMap() |
---|
590 | { |
---|
591 | if(G) { |
---|
592 | std::vector<DynMapBase<Edge>* >::iterator i; |
---|
593 | for(i=static_cast<const SymSmartGraph*>(G)->dyn_edge_maps.begin(); |
---|
594 | i!=static_cast<const SymSmartGraph*>(G)->dyn_edge_maps.end() |
---|
595 | && *i!=this; ++i) ; |
---|
596 | //if(*i==this) G->dyn_edge_maps.erase(i); //Way too slow... |
---|
597 | //A better way to do that: (Is this really important?) |
---|
598 | if(*i==this) { |
---|
599 | *i=static_cast<const SymSmartGraph*>(G)->dyn_edge_maps.back(); |
---|
600 | static_cast<const SymSmartGraph*>(G)->dyn_edge_maps.pop_back(); |
---|
601 | } |
---|
602 | } |
---|
603 | } |
---|
604 | |
---|
605 | void add(const Edge k) |
---|
606 | { |
---|
607 | if(!k.idref()%2&&k.idref()/2>=int(container.size())) |
---|
608 | container.resize(k.idref()/2+1); |
---|
609 | } |
---|
610 | void erase(const Edge k) { } |
---|
611 | |
---|
612 | void set(Edge n, T a) { container[n.idref()/2]=a; } |
---|
613 | //T get(Edge n) const { return container[n.idref()/2]; } |
---|
614 | typename std::vector<T>::reference |
---|
615 | operator[](Edge n) { return container[n.idref()/2]; } |
---|
616 | typename std::vector<T>::const_reference |
---|
617 | operator[](Edge n) const { return container[n.idref()/2]; } |
---|
618 | |
---|
619 | ///\warning There is no safety check at all! |
---|
620 | ///Using operator = between maps attached to different graph may |
---|
621 | ///cause serious problem. |
---|
622 | ///\todo Is this really so? |
---|
623 | ///\todo It can copy between different types. |
---|
624 | const SymEdgeMap<T>& operator=(const SymEdgeMap<T> &m) |
---|
625 | { |
---|
626 | container = m.container; |
---|
627 | return *this; |
---|
628 | } |
---|
629 | template<typename TT> |
---|
630 | const SymEdgeMap<T>& operator=(const SymEdgeMap<TT> &m) |
---|
631 | { |
---|
632 | copy(m.container.begin(), m.container.end(), container.begin()); |
---|
633 | return *this; |
---|
634 | } |
---|
635 | |
---|
636 | void update() {} //Useless for DynMaps |
---|
637 | void update(T a) {} //Useless for DynMaps |
---|
638 | |
---|
639 | }; |
---|
640 | |
---|
641 | }; |
---|
642 | |
---|
643 | |
---|
644 | } //namespace hugo |
---|
645 | |
---|
646 | |
---|
647 | |
---|
648 | |
---|
649 | #endif //SMART_GRAPH_H |
---|