1 | /* -*- C++ -*- |
---|
2 | * lemon/smart_graph.h - Part of LEMON, a generic C++ optimization library |
---|
3 | * |
---|
4 | * Copyright (C) 2006 Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
---|
5 | * (Egervary Research Group on Combinatorial Optimization, EGRES). |
---|
6 | * |
---|
7 | * Permission to use, modify and distribute this software is granted |
---|
8 | * provided that this copyright notice appears in all copies. For |
---|
9 | * precise terms see the accompanying LICENSE file. |
---|
10 | * |
---|
11 | * This software is provided "AS IS" with no warranty of any kind, |
---|
12 | * express or implied, and with no claim as to its suitability for any |
---|
13 | * purpose. |
---|
14 | * |
---|
15 | */ |
---|
16 | |
---|
17 | #ifndef LEMON_SMART_GRAPH_H |
---|
18 | #define LEMON_SMART_GRAPH_H |
---|
19 | |
---|
20 | ///\ingroup graphs |
---|
21 | ///\file |
---|
22 | ///\brief SmartGraph and SmartUGraph classes. |
---|
23 | |
---|
24 | #include <vector> |
---|
25 | |
---|
26 | #include <lemon/invalid.h> |
---|
27 | |
---|
28 | #include <lemon/bits/clearable_graph_extender.h> |
---|
29 | #include <lemon/bits/extendable_graph_extender.h> |
---|
30 | #include <lemon/bits/iterable_graph_extender.h> |
---|
31 | #include <lemon/bits/alteration_notifier.h> |
---|
32 | #include <lemon/bits/default_map.h> |
---|
33 | #include <lemon/bits/graph_extender.h> |
---|
34 | |
---|
35 | #include <lemon/utility.h> |
---|
36 | #include <lemon/error.h> |
---|
37 | |
---|
38 | namespace lemon { |
---|
39 | |
---|
40 | class SmartGraph; |
---|
41 | ///Base of SmartGraph |
---|
42 | |
---|
43 | ///Base of SmartGraph |
---|
44 | /// |
---|
45 | class SmartGraphBase { |
---|
46 | |
---|
47 | friend class SmatGraph; |
---|
48 | |
---|
49 | protected: |
---|
50 | struct NodeT |
---|
51 | { |
---|
52 | int first_in,first_out; |
---|
53 | NodeT() : first_in(-1), first_out(-1) {} |
---|
54 | }; |
---|
55 | struct EdgeT |
---|
56 | { |
---|
57 | int target, source, next_in, next_out; |
---|
58 | //FIXME: is this necessary? |
---|
59 | EdgeT() : next_in(-1), next_out(-1) {} |
---|
60 | }; |
---|
61 | |
---|
62 | std::vector<NodeT> nodes; |
---|
63 | |
---|
64 | std::vector<EdgeT> edges; |
---|
65 | |
---|
66 | |
---|
67 | public: |
---|
68 | |
---|
69 | typedef SmartGraphBase Graph; |
---|
70 | |
---|
71 | class Node; |
---|
72 | class Edge; |
---|
73 | |
---|
74 | |
---|
75 | public: |
---|
76 | |
---|
77 | SmartGraphBase() : nodes(), edges() { } |
---|
78 | SmartGraphBase(const SmartGraphBase &_g) |
---|
79 | : nodes(_g.nodes), edges(_g.edges) { } |
---|
80 | |
---|
81 | typedef True NodeNumTag; |
---|
82 | typedef True EdgeNumTag; |
---|
83 | |
---|
84 | ///Number of nodes. |
---|
85 | int nodeNum() const { return nodes.size(); } |
---|
86 | ///Number of edges. |
---|
87 | int edgeNum() const { return edges.size(); } |
---|
88 | |
---|
89 | /// Maximum node ID. |
---|
90 | |
---|
91 | /// Maximum node ID. |
---|
92 | ///\sa id(Node) |
---|
93 | int maxNodeId() const { return nodes.size()-1; } |
---|
94 | /// Maximum edge ID. |
---|
95 | |
---|
96 | /// Maximum edge ID. |
---|
97 | ///\sa id(Edge) |
---|
98 | int maxEdgeId() const { return edges.size()-1; } |
---|
99 | |
---|
100 | Node source(Edge e) const { return edges[e.n].source; } |
---|
101 | Node target(Edge e) const { return edges[e.n].target; } |
---|
102 | |
---|
103 | /// Node ID. |
---|
104 | |
---|
105 | /// The ID of a valid Node is a nonnegative integer not greater than |
---|
106 | /// \ref maxNodeId(). The range of the ID's is not surely continuous |
---|
107 | /// and the greatest node ID can be actually less then \ref maxNodeId(). |
---|
108 | /// |
---|
109 | /// The ID of the \ref INVALID node is -1. |
---|
110 | ///\return The ID of the node \c v. |
---|
111 | static int id(Node v) { return v.n; } |
---|
112 | /// Edge ID. |
---|
113 | |
---|
114 | /// The ID of a valid Edge is a nonnegative integer not greater than |
---|
115 | /// \ref maxEdgeId(). The range of the ID's is not surely continuous |
---|
116 | /// and the greatest edge ID can be actually less then \ref maxEdgeId(). |
---|
117 | /// |
---|
118 | /// The ID of the \ref INVALID edge is -1. |
---|
119 | ///\return The ID of the edge \c e. |
---|
120 | static int id(Edge e) { return e.n; } |
---|
121 | |
---|
122 | static Node nodeFromId(int id) { return Node(id);} |
---|
123 | |
---|
124 | static Edge edgeFromId(int id) { return Edge(id);} |
---|
125 | |
---|
126 | Node addNode() { |
---|
127 | Node n; n.n=nodes.size(); |
---|
128 | nodes.push_back(NodeT()); //FIXME: Hmmm... |
---|
129 | return n; |
---|
130 | } |
---|
131 | |
---|
132 | Edge addEdge(Node u, Node v) { |
---|
133 | Edge e; e.n=edges.size(); edges.push_back(EdgeT()); //FIXME: Hmmm... |
---|
134 | edges[e.n].source=u.n; edges[e.n].target=v.n; |
---|
135 | edges[e.n].next_out=nodes[u.n].first_out; |
---|
136 | edges[e.n].next_in=nodes[v.n].first_in; |
---|
137 | nodes[u.n].first_out=nodes[v.n].first_in=e.n; |
---|
138 | |
---|
139 | return e; |
---|
140 | } |
---|
141 | |
---|
142 | void clear() { |
---|
143 | edges.clear(); |
---|
144 | nodes.clear(); |
---|
145 | } |
---|
146 | |
---|
147 | |
---|
148 | class Node { |
---|
149 | friend class SmartGraphBase; |
---|
150 | friend class SmartGraph; |
---|
151 | |
---|
152 | protected: |
---|
153 | int n; |
---|
154 | Node(int nn) {n=nn;} |
---|
155 | public: |
---|
156 | Node() {} |
---|
157 | Node (Invalid) { n=-1; } |
---|
158 | bool operator==(const Node i) const {return n==i.n;} |
---|
159 | bool operator!=(const Node i) const {return n!=i.n;} |
---|
160 | bool operator<(const Node i) const {return n<i.n;} |
---|
161 | }; |
---|
162 | |
---|
163 | |
---|
164 | class Edge { |
---|
165 | friend class SmartGraphBase; |
---|
166 | friend class SmartGraph; |
---|
167 | |
---|
168 | protected: |
---|
169 | int n; |
---|
170 | Edge(int nn) {n=nn;} |
---|
171 | public: |
---|
172 | Edge() { } |
---|
173 | Edge (Invalid) { n=-1; } |
---|
174 | bool operator==(const Edge i) const {return n==i.n;} |
---|
175 | bool operator!=(const Edge i) const {return n!=i.n;} |
---|
176 | bool operator<(const Edge i) const {return n<i.n;} |
---|
177 | }; |
---|
178 | |
---|
179 | void first(Node& node) const { |
---|
180 | node.n = nodes.size() - 1; |
---|
181 | } |
---|
182 | |
---|
183 | static void next(Node& node) { |
---|
184 | --node.n; |
---|
185 | } |
---|
186 | |
---|
187 | void first(Edge& edge) const { |
---|
188 | edge.n = edges.size() - 1; |
---|
189 | } |
---|
190 | |
---|
191 | static void next(Edge& edge) { |
---|
192 | --edge.n; |
---|
193 | } |
---|
194 | |
---|
195 | void firstOut(Edge& edge, const Node& node) const { |
---|
196 | edge.n = nodes[node.n].first_out; |
---|
197 | } |
---|
198 | |
---|
199 | void nextOut(Edge& edge) const { |
---|
200 | edge.n = edges[edge.n].next_out; |
---|
201 | } |
---|
202 | |
---|
203 | void firstIn(Edge& edge, const Node& node) const { |
---|
204 | edge.n = nodes[node.n].first_in; |
---|
205 | } |
---|
206 | |
---|
207 | void nextIn(Edge& edge) const { |
---|
208 | edge.n = edges[edge.n].next_in; |
---|
209 | } |
---|
210 | |
---|
211 | Node _split(Node n, bool connect = true) |
---|
212 | { |
---|
213 | Node b = addNode(); |
---|
214 | nodes[b.n].first_out=nodes[n.n].first_out; |
---|
215 | nodes[n.n].first_out=-1; |
---|
216 | for(int i=nodes[b.n].first_out;i!=-1;i++) edges[i].source=b.n; |
---|
217 | if(connect) addEdge(n,b); |
---|
218 | return b; |
---|
219 | } |
---|
220 | |
---|
221 | }; |
---|
222 | |
---|
223 | typedef ClearableGraphExtender< |
---|
224 | ExtendableGraphExtender< |
---|
225 | MappableGraphExtender< |
---|
226 | IterableGraphExtender< |
---|
227 | AlterableGraphExtender< |
---|
228 | GraphExtender<SmartGraphBase> > > > > > ExtendedSmartGraphBase; |
---|
229 | |
---|
230 | /// \ingroup graphs |
---|
231 | |
---|
232 | ///A smart graph class. |
---|
233 | |
---|
234 | ///This is a simple and fast graph implementation. |
---|
235 | ///It is also quite memory efficient, but at the price |
---|
236 | ///that <b> it does support only limited (only stack-like) |
---|
237 | ///node and edge deletions</b>. |
---|
238 | ///It conforms to |
---|
239 | ///the \ref concept::ExtendableGraph "ExtendableGraph" concept. |
---|
240 | ///\sa concept::ExtendableGraph. |
---|
241 | /// |
---|
242 | ///\author Alpar Juttner |
---|
243 | class SmartGraph : public ExtendedSmartGraphBase { |
---|
244 | public: |
---|
245 | |
---|
246 | class Snapshot; |
---|
247 | friend class Snapshot; |
---|
248 | |
---|
249 | protected: |
---|
250 | void restoreSnapshot(const Snapshot &s) |
---|
251 | { |
---|
252 | while(s.edge_num<edges.size()) { |
---|
253 | Parent::getNotifier(Edge()).erase(Edge(edges.size()-1)); |
---|
254 | nodes[edges.back().target].first_in=edges.back().next_in; |
---|
255 | nodes[edges.back().source].first_out=edges.back().next_out; |
---|
256 | edges.pop_back(); |
---|
257 | } |
---|
258 | //nodes.resize(s.nodes_num); |
---|
259 | while(s.node_num<nodes.size()) { |
---|
260 | Parent::getNotifier(Node()).erase(Node(nodes.size()-1)); |
---|
261 | nodes.pop_back(); |
---|
262 | } |
---|
263 | } |
---|
264 | |
---|
265 | public: |
---|
266 | |
---|
267 | ///Split a node. |
---|
268 | |
---|
269 | ///This function splits a node. First a new node is added to the graph, |
---|
270 | ///then the source of each outgoing edge of \c n is moved to this new node. |
---|
271 | ///If \c connect is \c true (this is the default value), then a new edge |
---|
272 | ///from \c n to the newly created node is also added. |
---|
273 | ///\return The newly created node. |
---|
274 | /// |
---|
275 | ///\note The <tt>Edge</tt>s |
---|
276 | ///referencing a moved edge remain |
---|
277 | ///valid. However <tt>InEdge</tt>'s and <tt>OutEdge</tt>'s |
---|
278 | ///may be invalidated. |
---|
279 | ///\warning This functionality cannot be used together with the Snapshot |
---|
280 | ///feature. |
---|
281 | ///\todo It could be implemented in a bit faster way. |
---|
282 | Node split(Node n, bool connect = true) |
---|
283 | { |
---|
284 | Node b = _split(n,connect); |
---|
285 | return b; |
---|
286 | } |
---|
287 | |
---|
288 | |
---|
289 | ///Class to make a snapshot of the graph and to restrore to it later. |
---|
290 | |
---|
291 | ///Class to make a snapshot of the graph and to restrore to it later. |
---|
292 | /// |
---|
293 | ///The newly added nodes and edges can be removed using the |
---|
294 | ///restore() function. |
---|
295 | ///\note After you restore a state, you cannot restore |
---|
296 | ///a later state, in other word you cannot add again the edges deleted |
---|
297 | ///by restore() using another Snapshot instance. |
---|
298 | /// |
---|
299 | class Snapshot |
---|
300 | { |
---|
301 | SmartGraph *g; |
---|
302 | protected: |
---|
303 | friend class SmartGraph; |
---|
304 | unsigned int node_num; |
---|
305 | unsigned int edge_num; |
---|
306 | public: |
---|
307 | ///Default constructor. |
---|
308 | |
---|
309 | ///Default constructor. |
---|
310 | ///To actually make a snapshot you must call save(). |
---|
311 | /// |
---|
312 | Snapshot() : g(0) {} |
---|
313 | ///Constructor that immediately makes a snapshot |
---|
314 | |
---|
315 | ///This constructor immediately makes a snapshot of the graph. |
---|
316 | ///\param _g The graph we make a snapshot of. |
---|
317 | Snapshot(SmartGraph &_g) :g(&_g) { |
---|
318 | node_num=g->nodes.size(); |
---|
319 | edge_num=g->edges.size(); |
---|
320 | } |
---|
321 | |
---|
322 | ///Make a snapshot. |
---|
323 | |
---|
324 | ///Make a snapshot of the graph. |
---|
325 | /// |
---|
326 | ///This function can be called more than once. In case of a repeated |
---|
327 | ///call, the previous snapshot gets lost. |
---|
328 | ///\param _g The graph we make the snapshot of. |
---|
329 | void save(SmartGraph &_g) |
---|
330 | { |
---|
331 | g=&_g; |
---|
332 | node_num=g->nodes.size(); |
---|
333 | edge_num=g->edges.size(); |
---|
334 | } |
---|
335 | |
---|
336 | ///Undo the changes until a snapshot. |
---|
337 | |
---|
338 | ///Undo the changes until a snapshot created by save(). |
---|
339 | /// |
---|
340 | ///\note After you restored a state, you cannot restore |
---|
341 | ///a later state, in other word you cannot add again the edges deleted |
---|
342 | ///by restore(). |
---|
343 | /// |
---|
344 | ///\todo This function might be called undo(). |
---|
345 | |
---|
346 | void restore() |
---|
347 | { |
---|
348 | g->restoreSnapshot(*this); |
---|
349 | } |
---|
350 | }; |
---|
351 | }; |
---|
352 | |
---|
353 | |
---|
354 | /**************** Undirected List Graph ****************/ |
---|
355 | |
---|
356 | typedef ClearableUGraphExtender< |
---|
357 | ExtendableUGraphExtender< |
---|
358 | MappableUGraphExtender< |
---|
359 | IterableUGraphExtender< |
---|
360 | AlterableUGraphExtender< |
---|
361 | UGraphExtender<SmartGraphBase> > > > > > ExtendedSmartUGraphBase; |
---|
362 | |
---|
363 | /// \ingroup graphs |
---|
364 | /// |
---|
365 | /// \brief A smart undirected graph class. |
---|
366 | /// |
---|
367 | /// This is a simple and fast undirected graph implementation. |
---|
368 | /// It is also quite memory efficient, but at the price |
---|
369 | /// that <b> it does support only limited (only stack-like) |
---|
370 | /// node and edge deletions</b>. |
---|
371 | /// Except from this it conforms to |
---|
372 | /// the \ref concept::UGraph "UGraph" concept. |
---|
373 | /// \sa concept::UGraph. |
---|
374 | /// |
---|
375 | /// \todo Snapshot hasn't been implemented yet. |
---|
376 | /// |
---|
377 | class SmartUGraph : public ExtendedSmartUGraphBase { |
---|
378 | }; |
---|
379 | |
---|
380 | |
---|
381 | class SmartBpUGraphBase { |
---|
382 | public: |
---|
383 | |
---|
384 | class NodeSetError : public LogicError { |
---|
385 | virtual const char* exceptionName() const { |
---|
386 | return "lemon::SmartBpUGraph::NodeSetError"; |
---|
387 | } |
---|
388 | }; |
---|
389 | |
---|
390 | protected: |
---|
391 | |
---|
392 | struct NodeT { |
---|
393 | int first; |
---|
394 | NodeT() {} |
---|
395 | NodeT(int _first) : first(_first) {} |
---|
396 | }; |
---|
397 | |
---|
398 | struct EdgeT { |
---|
399 | int aNode, next_out; |
---|
400 | int bNode, next_in; |
---|
401 | }; |
---|
402 | |
---|
403 | std::vector<NodeT> aNodes; |
---|
404 | std::vector<NodeT> bNodes; |
---|
405 | |
---|
406 | std::vector<EdgeT> edges; |
---|
407 | |
---|
408 | public: |
---|
409 | |
---|
410 | class Node { |
---|
411 | friend class SmartBpUGraphBase; |
---|
412 | protected: |
---|
413 | int id; |
---|
414 | |
---|
415 | Node(int _id) : id(_id) {} |
---|
416 | public: |
---|
417 | Node() {} |
---|
418 | Node(Invalid) { id = -1; } |
---|
419 | bool operator==(const Node i) const {return id==i.id;} |
---|
420 | bool operator!=(const Node i) const {return id!=i.id;} |
---|
421 | bool operator<(const Node i) const {return id<i.id;} |
---|
422 | }; |
---|
423 | |
---|
424 | class Edge { |
---|
425 | friend class SmartBpUGraphBase; |
---|
426 | protected: |
---|
427 | int id; |
---|
428 | |
---|
429 | Edge(int _id) { id = _id;} |
---|
430 | public: |
---|
431 | Edge() {} |
---|
432 | Edge (Invalid) { id = -1; } |
---|
433 | bool operator==(const Edge i) const {return id==i.id;} |
---|
434 | bool operator!=(const Edge i) const {return id!=i.id;} |
---|
435 | bool operator<(const Edge i) const {return id<i.id;} |
---|
436 | }; |
---|
437 | |
---|
438 | void firstANode(Node& node) const { |
---|
439 | node.id = 2 * aNodes.size() - 2; |
---|
440 | if (node.id < 0) node.id = -1; |
---|
441 | } |
---|
442 | void nextANode(Node& node) const { |
---|
443 | node.id -= 2; |
---|
444 | if (node.id < 0) node.id = -1; |
---|
445 | } |
---|
446 | |
---|
447 | void firstBNode(Node& node) const { |
---|
448 | node.id = 2 * bNodes.size() - 1; |
---|
449 | } |
---|
450 | void nextBNode(Node& node) const { |
---|
451 | node.id -= 2; |
---|
452 | } |
---|
453 | |
---|
454 | void first(Node& node) const { |
---|
455 | if (aNodes.size() > 0) { |
---|
456 | node.id = 2 * aNodes.size() - 2; |
---|
457 | } else { |
---|
458 | node.id = 2 * bNodes.size() - 1; |
---|
459 | } |
---|
460 | } |
---|
461 | void next(Node& node) const { |
---|
462 | node.id -= 2; |
---|
463 | if (node.id == -2) { |
---|
464 | node.id = 2 * bNodes.size() - 1; |
---|
465 | } |
---|
466 | } |
---|
467 | |
---|
468 | void first(Edge& edge) const { |
---|
469 | edge.id = edges.size() - 1; |
---|
470 | } |
---|
471 | void next(Edge& edge) const { |
---|
472 | --edge.id; |
---|
473 | } |
---|
474 | |
---|
475 | void firstOut(Edge& edge, const Node& node) const { |
---|
476 | LEMON_ASSERT((node.id & 1) == 0, NodeSetError()); |
---|
477 | edge.id = aNodes[node.id >> 1].first; |
---|
478 | } |
---|
479 | void nextOut(Edge& edge) const { |
---|
480 | edge.id = edges[edge.id].next_out; |
---|
481 | } |
---|
482 | |
---|
483 | void firstIn(Edge& edge, const Node& node) const { |
---|
484 | LEMON_ASSERT((node.id & 1) == 1, NodeSetError()); |
---|
485 | edge.id = bNodes[node.id >> 1].first; |
---|
486 | } |
---|
487 | void nextIn(Edge& edge) const { |
---|
488 | edge.id = edges[edge.id].next_in; |
---|
489 | } |
---|
490 | |
---|
491 | static int id(const Node& node) { |
---|
492 | return node.id; |
---|
493 | } |
---|
494 | static Node nodeFromId(int id) { |
---|
495 | return Node(id); |
---|
496 | } |
---|
497 | int maxNodeId() const { |
---|
498 | return aNodes.size() > bNodes.size() ? |
---|
499 | aNodes.size() * 2 - 2 : bNodes.size() * 2 - 1; |
---|
500 | } |
---|
501 | |
---|
502 | static int id(const Edge& edge) { |
---|
503 | return edge.id; |
---|
504 | } |
---|
505 | static Edge edgeFromId(int id) { |
---|
506 | return Edge(id); |
---|
507 | } |
---|
508 | int maxEdgeId() const { |
---|
509 | return edges.size(); |
---|
510 | } |
---|
511 | |
---|
512 | static int aNodeId(const Node& node) { |
---|
513 | return node.id >> 1; |
---|
514 | } |
---|
515 | static Node fromANodeId(int id, Node) { |
---|
516 | return Node(id << 1); |
---|
517 | } |
---|
518 | int maxANodeId() const { |
---|
519 | return aNodes.size(); |
---|
520 | } |
---|
521 | |
---|
522 | static int bNodeId(const Node& node) { |
---|
523 | return node.id >> 1; |
---|
524 | } |
---|
525 | static Node fromBNodeId(int id) { |
---|
526 | return Node((id << 1) + 1); |
---|
527 | } |
---|
528 | int maxBNodeId() const { |
---|
529 | return bNodes.size(); |
---|
530 | } |
---|
531 | |
---|
532 | Node aNode(const Edge& edge) const { |
---|
533 | return Node(edges[edge.id].aNode); |
---|
534 | } |
---|
535 | Node bNode(const Edge& edge) const { |
---|
536 | return Node(edges[edge.id].bNode); |
---|
537 | } |
---|
538 | |
---|
539 | static bool aNode(const Node& node) { |
---|
540 | return (node.id & 1) == 0; |
---|
541 | } |
---|
542 | |
---|
543 | static bool bNode(const Node& node) { |
---|
544 | return (node.id & 1) == 1; |
---|
545 | } |
---|
546 | |
---|
547 | Node addANode() { |
---|
548 | NodeT nodeT; |
---|
549 | nodeT.first = -1; |
---|
550 | aNodes.push_back(nodeT); |
---|
551 | return Node(aNodes.size() * 2 - 2); |
---|
552 | } |
---|
553 | |
---|
554 | Node addBNode() { |
---|
555 | NodeT nodeT; |
---|
556 | nodeT.first = -1; |
---|
557 | bNodes.push_back(nodeT); |
---|
558 | return Node(bNodes.size() * 2 - 1); |
---|
559 | } |
---|
560 | |
---|
561 | Edge addEdge(const Node& source, const Node& target) { |
---|
562 | LEMON_ASSERT(((source.id ^ target.id) & 1) == 1, NodeSetError()); |
---|
563 | EdgeT edgeT; |
---|
564 | if ((source.id & 1) == 0) { |
---|
565 | edgeT.aNode = source.id; |
---|
566 | edgeT.bNode = target.id; |
---|
567 | } else { |
---|
568 | edgeT.aNode = target.id; |
---|
569 | edgeT.bNode = source.id; |
---|
570 | } |
---|
571 | edgeT.next_out = aNodes[edgeT.aNode >> 1].first; |
---|
572 | aNodes[edgeT.aNode >> 1].first = edges.size(); |
---|
573 | edgeT.next_in = bNodes[edgeT.bNode >> 1].first; |
---|
574 | bNodes[edgeT.bNode >> 1].first = edges.size(); |
---|
575 | edges.push_back(edgeT); |
---|
576 | return Edge(edges.size() - 1); |
---|
577 | } |
---|
578 | |
---|
579 | void clear() { |
---|
580 | aNodes.clear(); |
---|
581 | bNodes.clear(); |
---|
582 | edges.clear(); |
---|
583 | } |
---|
584 | |
---|
585 | }; |
---|
586 | |
---|
587 | |
---|
588 | typedef ClearableBpUGraphExtender< |
---|
589 | ExtendableBpUGraphExtender< |
---|
590 | MappableBpUGraphExtender< |
---|
591 | IterableBpUGraphExtender< |
---|
592 | AlterableBpUGraphExtender< |
---|
593 | BpUGraphExtender < |
---|
594 | SmartBpUGraphBase> > > > > > |
---|
595 | ExtendedSmartBpUGraphBase; |
---|
596 | |
---|
597 | /// \ingroup graphs |
---|
598 | /// |
---|
599 | /// \brief A smart bipartite undirected graph class. |
---|
600 | /// |
---|
601 | /// This is a simple and fast bipartite undirected graph implementation. |
---|
602 | /// It is also quite memory efficient, but at the price |
---|
603 | /// that <b> it does not support node and edge deletions</b>. |
---|
604 | /// Except from this it conforms to |
---|
605 | /// the \ref concept::BpUGraph "BpUGraph" concept. |
---|
606 | /// \sa concept::BpUGraph. |
---|
607 | /// |
---|
608 | class SmartBpUGraph : public ExtendedSmartBpUGraphBase {}; |
---|
609 | |
---|
610 | |
---|
611 | /// @} |
---|
612 | } //namespace lemon |
---|
613 | |
---|
614 | |
---|
615 | #endif //LEMON_SMART_GRAPH_H |
---|