1 | /* -*- C++ -*- |
---|
2 | * src/lemon/concept/graph_component.h - Part of LEMON, a generic C++ optimization library |
---|
3 | * |
---|
4 | * Copyright (C) 2004 Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
---|
5 | * (Egervary Combinatorial Optimization Research Group, 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 | ///\ingroup concept |
---|
18 | ///\file |
---|
19 | ///\brief The graph components. |
---|
20 | |
---|
21 | |
---|
22 | #ifndef LEMON_CONCEPT_GRAPH_COMPONENT_H |
---|
23 | #define LEMON_CONCEPT_GRAPH_COMPONENT_H |
---|
24 | |
---|
25 | #include <lemon/invalid.h> |
---|
26 | #include <lemon/concept/maps.h> |
---|
27 | |
---|
28 | namespace lemon { |
---|
29 | namespace concept { |
---|
30 | |
---|
31 | |
---|
32 | /**************** Graph iterator concepts ****************/ |
---|
33 | |
---|
34 | /// Skeleton class for graph Node and Edge |
---|
35 | |
---|
36 | /// \note Because Node and Edge are forbidden to inherit from the same |
---|
37 | /// base class, this is a template. For Node you should instantiate it |
---|
38 | /// with character 'n' and for Edge with 'e'. |
---|
39 | |
---|
40 | template<char Ch> |
---|
41 | class GraphItem { |
---|
42 | public: |
---|
43 | GraphItem() {} |
---|
44 | GraphItem(Invalid) {} |
---|
45 | |
---|
46 | // We explicitely list these: |
---|
47 | GraphItem(GraphItem const&) {} |
---|
48 | GraphItem& operator=(GraphItem const&) { return *this; } |
---|
49 | |
---|
50 | bool operator==(GraphItem) const { return false; } |
---|
51 | bool operator!=(GraphItem) const { return false; } |
---|
52 | |
---|
53 | // Technical requirement. Do we really need this? |
---|
54 | bool operator<(GraphItem) const { return false; } |
---|
55 | }; |
---|
56 | |
---|
57 | |
---|
58 | template<typename GI> |
---|
59 | struct GraphItemConcept { |
---|
60 | void constraints() { |
---|
61 | GI i1; |
---|
62 | GI i2 = i1; |
---|
63 | GI i3 = INVALID; |
---|
64 | |
---|
65 | i1 = i2 = i3; |
---|
66 | |
---|
67 | bool b; |
---|
68 | b = (ia == ib) && (ia != ib) && (ia < ib); |
---|
69 | b = (ia == INVALID) && (ib != INVALID); |
---|
70 | } |
---|
71 | |
---|
72 | const GI &ia; |
---|
73 | const GI &ib; |
---|
74 | }; |
---|
75 | |
---|
76 | |
---|
77 | template<typename Iter, typename Graph, typename BaseItem> |
---|
78 | struct GraphIteratorConcept { |
---|
79 | void constraints() { |
---|
80 | function_requires< GraphItemConcept<Iter> >(); |
---|
81 | Iter it1(g); |
---|
82 | |
---|
83 | /// \todo Do we need NodeIt(Node) kind of constructor? |
---|
84 | // Iter it2(bj); |
---|
85 | Iter it2; |
---|
86 | |
---|
87 | it2 = ++it1; |
---|
88 | ++it2 = it1; |
---|
89 | ++(++it1); |
---|
90 | /// \bug This should be: is_base_and_derived<BaseItem, Iter> |
---|
91 | BaseItem bi = it1; |
---|
92 | bi = it2; |
---|
93 | } |
---|
94 | |
---|
95 | BaseItem bj; |
---|
96 | Graph g; |
---|
97 | }; |
---|
98 | |
---|
99 | template<typename Iter, typename Graph> |
---|
100 | struct GraphIncIteratorConcept { |
---|
101 | typedef typename Graph::Node Node; |
---|
102 | typedef typename Graph::Edge Edge; |
---|
103 | void constraints() { |
---|
104 | function_requires< GraphItemConcept<Iter> >(); |
---|
105 | Iter it1(graph, node); |
---|
106 | /// \todo Do we need OutEdgeIt(Edge) kind of constructor? |
---|
107 | // Iter it2(edge); |
---|
108 | Iter it2; |
---|
109 | |
---|
110 | it2 = ++it1; |
---|
111 | ++it2 = it1; |
---|
112 | ++(++it1); |
---|
113 | Edge e = it1; |
---|
114 | e = it2; |
---|
115 | } |
---|
116 | |
---|
117 | Edge edge; |
---|
118 | Node node; |
---|
119 | Graph graph; |
---|
120 | }; |
---|
121 | |
---|
122 | |
---|
123 | |
---|
124 | /// An empty base graph class. |
---|
125 | |
---|
126 | /// This class provides the minimal set of features needed for a graph |
---|
127 | /// structure. All graph concepts have to be conform to this base |
---|
128 | /// graph. |
---|
129 | /// |
---|
130 | /// \bug This is not true. The minimal graph concept is the |
---|
131 | /// BaseIterableGraphComponent. |
---|
132 | |
---|
133 | class BaseGraphComponent { |
---|
134 | public: |
---|
135 | |
---|
136 | typedef BaseGraphComponent Graph; |
---|
137 | |
---|
138 | /// Node class of the graph. |
---|
139 | |
---|
140 | /// This class represents the Nodes of the graph. |
---|
141 | /// |
---|
142 | class Node { |
---|
143 | public: |
---|
144 | |
---|
145 | /// Default constructor. |
---|
146 | |
---|
147 | /// @warning The default constructor sets the iterator |
---|
148 | /// to an undefined value. |
---|
149 | |
---|
150 | Node() {} |
---|
151 | /// Copy constructor. |
---|
152 | |
---|
153 | /// Copy constructor. |
---|
154 | /// |
---|
155 | Node(const Node&) {} |
---|
156 | |
---|
157 | /// Invalid constructor \& conversion. |
---|
158 | |
---|
159 | /// This constructor initializes the iterator to be invalid. |
---|
160 | /// \sa Invalid for more details. |
---|
161 | Node(Invalid) {} |
---|
162 | |
---|
163 | |
---|
164 | /// Assign operator for nodes. |
---|
165 | |
---|
166 | /// The nodes are assignable. |
---|
167 | /// |
---|
168 | Node& operator=(const Node&) { return *this;} |
---|
169 | |
---|
170 | /// Equality operator. |
---|
171 | |
---|
172 | /// Two iterators are equal if and only if they represents the |
---|
173 | /// same node in the graph or both are invalid. |
---|
174 | bool operator==(const Node&) const { return true;} |
---|
175 | |
---|
176 | |
---|
177 | /// Inequality operator. |
---|
178 | |
---|
179 | /// \sa operator==(const Node& n) |
---|
180 | /// |
---|
181 | bool operator!=(const Node&) const { return true;} |
---|
182 | |
---|
183 | /// Comparison operator. |
---|
184 | |
---|
185 | /// This is a strict ordering between the nodes. |
---|
186 | /// |
---|
187 | /// This ordering can be different from the iterating order of nodes. |
---|
188 | /// \todo Possibly we don't need it. |
---|
189 | bool operator<(const Node&) const { return true;} |
---|
190 | }; |
---|
191 | |
---|
192 | /// Edge class of the graph. |
---|
193 | |
---|
194 | /// This class represents the Edges of the graph. |
---|
195 | /// |
---|
196 | class Edge { |
---|
197 | public: |
---|
198 | |
---|
199 | /// Default constructor. |
---|
200 | |
---|
201 | /// @warning The default constructor sets the iterator |
---|
202 | /// to an undefined value. |
---|
203 | |
---|
204 | Edge() {} |
---|
205 | /// Copy constructor. |
---|
206 | |
---|
207 | /// Copy constructor. |
---|
208 | /// |
---|
209 | Edge(const Edge&) {} |
---|
210 | |
---|
211 | /// Invalid constructor \& conversion. |
---|
212 | |
---|
213 | /// This constructor initializes the iterator to be invalid. |
---|
214 | /// \sa Invalid for more details. |
---|
215 | Edge(Invalid) {} |
---|
216 | |
---|
217 | /// Assign operator for edges. |
---|
218 | |
---|
219 | /// The edges are assignable. |
---|
220 | /// |
---|
221 | Edge& operator=(const Edge&) { return *this;} |
---|
222 | |
---|
223 | /// Equality operator. |
---|
224 | |
---|
225 | /// Two iterators are equal if and only if they represents the |
---|
226 | /// same edge in the graph or both are invalid. |
---|
227 | bool operator==(const Edge&) const { return true;} |
---|
228 | |
---|
229 | |
---|
230 | /// Inequality operator. |
---|
231 | |
---|
232 | /// \sa operator==(const Edge& n) |
---|
233 | /// |
---|
234 | bool operator!=(const Edge&) const { return true;} |
---|
235 | |
---|
236 | /// Comparison operator. |
---|
237 | |
---|
238 | /// This is a strict ordering between the edges. |
---|
239 | /// |
---|
240 | /// This ordering can be different from the iterating order of edges. |
---|
241 | /// \todo Possibly we don't need it. |
---|
242 | bool operator<(const Edge&) const { return true;} |
---|
243 | }; |
---|
244 | |
---|
245 | ///Gives back the target node of an edge. |
---|
246 | |
---|
247 | ///Gives back the target node of an edge. |
---|
248 | /// |
---|
249 | Node target(const Edge&) const { return INVALID;} |
---|
250 | |
---|
251 | ///Gives back the source node of an edge. |
---|
252 | |
---|
253 | ///Gives back the source node of an edge. |
---|
254 | /// |
---|
255 | Node source(const Edge&) const { return INVALID;} |
---|
256 | }; |
---|
257 | |
---|
258 | |
---|
259 | /// Concept check structure for BaseGraph. |
---|
260 | |
---|
261 | /// Concept check structure for BaseGraph. |
---|
262 | /// |
---|
263 | |
---|
264 | template <typename Graph> |
---|
265 | struct BaseGraphComponentConcept { |
---|
266 | typedef typename Graph::Node Node; |
---|
267 | typedef typename Graph::Edge Edge; |
---|
268 | |
---|
269 | void constraints() { |
---|
270 | function_requires< GraphItemConcept<Node> >(); |
---|
271 | function_requires< GraphItemConcept<Edge> >(); |
---|
272 | { |
---|
273 | Node n; |
---|
274 | Edge e; |
---|
275 | n = graph.source(e); |
---|
276 | n = graph.target(e); |
---|
277 | } |
---|
278 | } |
---|
279 | |
---|
280 | const Graph& graph; |
---|
281 | }; |
---|
282 | |
---|
283 | /// An empty iterable base graph class. |
---|
284 | |
---|
285 | /// This class provides beside the core graph features |
---|
286 | /// core iterable interface for the graph structure. |
---|
287 | /// Most of the base graphs should be conform to this concept. |
---|
288 | |
---|
289 | class BaseIterableGraphComponent : virtual public BaseGraphComponent { |
---|
290 | public: |
---|
291 | |
---|
292 | typedef BaseGraphComponent::Node Node; |
---|
293 | typedef BaseGraphComponent::Edge Edge; |
---|
294 | |
---|
295 | /// Gives back the first Node in the iterating order. |
---|
296 | |
---|
297 | /// Gives back the first Node in the iterating order. |
---|
298 | /// |
---|
299 | void first(Node&) const {} |
---|
300 | |
---|
301 | /// Gives back the next Node in the iterating order. |
---|
302 | |
---|
303 | /// Gives back the next Node in the iterating order. |
---|
304 | /// |
---|
305 | void next(Node&) const {} |
---|
306 | |
---|
307 | /// Gives back the first Edge in the iterating order. |
---|
308 | |
---|
309 | /// Gives back the first Edge in the iterating order. |
---|
310 | /// |
---|
311 | void first(Edge&) const {} |
---|
312 | /// Gives back the next Edge in the iterating order. |
---|
313 | |
---|
314 | /// Gives back the next Edge in the iterating order. |
---|
315 | /// |
---|
316 | void next(Edge&) const {} |
---|
317 | |
---|
318 | |
---|
319 | /// Gives back the first of the Edges point to the given Node. |
---|
320 | |
---|
321 | /// Gives back the first of the Edges point to the given Node. |
---|
322 | /// |
---|
323 | void firstIn(Edge&, const Node&) const {} |
---|
324 | |
---|
325 | /// Gives back the next of the Edges points to the given Node. |
---|
326 | |
---|
327 | |
---|
328 | /// Gives back the next of the Edges points to the given Node. |
---|
329 | /// |
---|
330 | void nextIn(Edge&) const {} |
---|
331 | |
---|
332 | /// Gives back the first of the Edges start from the given Node. |
---|
333 | |
---|
334 | /// Gives back the first of the Edges start from the given Node. |
---|
335 | /// |
---|
336 | void firstOut(Edge&, const Node&) const {} |
---|
337 | |
---|
338 | /// Gives back the next of the Edges start from the given Node. |
---|
339 | |
---|
340 | /// Gives back the next of the Edges start from the given Node. |
---|
341 | /// |
---|
342 | void nextOut(Edge&) const {} |
---|
343 | }; |
---|
344 | |
---|
345 | |
---|
346 | /// Concept check structure for IterableBaseGraph. |
---|
347 | |
---|
348 | /// Concept check structure for IterableBaseGraph. |
---|
349 | /// |
---|
350 | template <typename Graph> |
---|
351 | struct BaseIterableGraphComponentConcept { |
---|
352 | |
---|
353 | void constraints() { |
---|
354 | function_requires< BaseGraphComponentConcept<Graph> >(); |
---|
355 | typename Graph::Node node; |
---|
356 | typename Graph::Edge edge; |
---|
357 | { |
---|
358 | graph.first(node); |
---|
359 | graph.next(node); |
---|
360 | } |
---|
361 | { |
---|
362 | graph.first(edge); |
---|
363 | graph.next(edge); |
---|
364 | } |
---|
365 | { |
---|
366 | graph.firstIn(edge, node); |
---|
367 | graph.nextIn(edge); |
---|
368 | } |
---|
369 | { |
---|
370 | graph.firstOut(edge, node); |
---|
371 | graph.nextOut(edge); |
---|
372 | } |
---|
373 | } |
---|
374 | |
---|
375 | const Graph& graph; |
---|
376 | }; |
---|
377 | |
---|
378 | /// An empty idable base graph class. |
---|
379 | |
---|
380 | /// This class provides beside the core graph features |
---|
381 | /// core id functions for the graph structure. |
---|
382 | /// The most of the base graphs should be conform to this concept. |
---|
383 | /// The id's are unique and immutable. |
---|
384 | |
---|
385 | class IDableGraphComponent : virtual public BaseGraphComponent { |
---|
386 | public: |
---|
387 | |
---|
388 | typedef BaseGraphComponent::Node Node; |
---|
389 | typedef BaseGraphComponent::Edge Edge; |
---|
390 | |
---|
391 | /// Gives back an unique integer id for the Node. |
---|
392 | |
---|
393 | /// Gives back an unique integer id for the Node. |
---|
394 | /// |
---|
395 | int id(const Node&) const { return -1;} |
---|
396 | |
---|
397 | /// Gives back an unique integer id for the Edge. |
---|
398 | |
---|
399 | /// Gives back an unique integer id for the Edge. |
---|
400 | /// |
---|
401 | int id(const Edge&) const { return -1;} |
---|
402 | }; |
---|
403 | |
---|
404 | |
---|
405 | /// Concept check structure for IdableBaseGraph. |
---|
406 | |
---|
407 | /// Concept check structure for IdableBaseGraph. |
---|
408 | /// |
---|
409 | template <typename Graph> |
---|
410 | struct IDableGraphComponentConcept { |
---|
411 | |
---|
412 | void constraints() { |
---|
413 | function_requires< BaseGraphComponentConcept<Graph> >(); |
---|
414 | typename Graph::Node node; |
---|
415 | int nid = graph.id(node); |
---|
416 | nid = graph.id(node); |
---|
417 | typename Graph::Edge edge; |
---|
418 | int eid = graph.id(edge); |
---|
419 | eid = graph.id(edge); |
---|
420 | } |
---|
421 | |
---|
422 | const Graph& graph; |
---|
423 | }; |
---|
424 | |
---|
425 | |
---|
426 | /// An empty max-idable base graph class. |
---|
427 | |
---|
428 | /// This class provides beside the core graph features |
---|
429 | /// core max id functions for the graph structure. |
---|
430 | /// The most of the base graphs should be conform to this concept. |
---|
431 | /// The id's are unique and immutable. |
---|
432 | class MaxIDableGraphComponent : virtual public BaseGraphComponent { |
---|
433 | public: |
---|
434 | |
---|
435 | /// Gives back an integer greater or equal to the maximum Node id. |
---|
436 | |
---|
437 | /// Gives back an integer greater or equal to the maximum Node id. |
---|
438 | /// |
---|
439 | int maxId(Node = INVALID) const { return -1;} |
---|
440 | |
---|
441 | /// Gives back an integer greater or equal to the maximum Edge id. |
---|
442 | |
---|
443 | /// Gives back an integer greater or equal to the maximum Edge id. |
---|
444 | /// |
---|
445 | int maxId(Edge = INVALID) const { return -1;} |
---|
446 | }; |
---|
447 | |
---|
448 | /// Concept check structure for MaxIdableBaseGraph. |
---|
449 | |
---|
450 | /// Concept check structure for MaxIdableBaseGraph. |
---|
451 | /// |
---|
452 | template <typename Graph> |
---|
453 | struct MaxIDableGraphComponentConcept { |
---|
454 | |
---|
455 | void constraints() { |
---|
456 | function_requires< BaseGraphComponentConcept<Graph> >(); |
---|
457 | int nid = graph.maxId(typename Graph::Node()); |
---|
458 | ignore_unused_variable_warning(nid); |
---|
459 | int eid = graph.maxId(typename Graph::Edge()); |
---|
460 | ignore_unused_variable_warning(eid); |
---|
461 | } |
---|
462 | |
---|
463 | const Graph& graph; |
---|
464 | }; |
---|
465 | |
---|
466 | /// An empty extendable base graph class. |
---|
467 | |
---|
468 | /// This class provides beside the core graph features |
---|
469 | /// core graph extend interface for the graph structure. |
---|
470 | /// The most of the base graphs should be conform to this concept. |
---|
471 | class BaseExtendableGraphComponent : virtual public BaseGraphComponent { |
---|
472 | public: |
---|
473 | |
---|
474 | typedef BaseGraphComponent::Node Node; |
---|
475 | typedef BaseGraphComponent::Edge Edge; |
---|
476 | |
---|
477 | /// Adds a new Node to the graph. |
---|
478 | |
---|
479 | /// Adds a new Node to the graph. |
---|
480 | /// |
---|
481 | Node addNode() { |
---|
482 | return INVALID; |
---|
483 | } |
---|
484 | |
---|
485 | /// Adds a new Edge connects the two Nodes to the graph. |
---|
486 | |
---|
487 | /// Adds a new Edge connects the two Nodes to the graph. |
---|
488 | /// |
---|
489 | Edge addEdge(const Node& from, const Node& to) { |
---|
490 | return INVALID; |
---|
491 | } |
---|
492 | |
---|
493 | }; |
---|
494 | |
---|
495 | /// Concept check structure for ExtendableBaseGraph. |
---|
496 | |
---|
497 | /// Concept check structure for ExtendableBaseGraph. |
---|
498 | /// |
---|
499 | template <typename Graph> |
---|
500 | struct BaseExtendableGraphComponentConcept { |
---|
501 | void constraints() { |
---|
502 | function_requires< BaseGraphComponentConcept<Graph> >(); |
---|
503 | typename Graph::Node node_a, node_b; |
---|
504 | node_a = graph.addNode(); |
---|
505 | typename Graph::Edge edge; |
---|
506 | edge = graph.addEdge(node_a, node_b); |
---|
507 | } |
---|
508 | |
---|
509 | Graph& graph; |
---|
510 | }; |
---|
511 | |
---|
512 | /// An empty erasable base graph class. |
---|
513 | |
---|
514 | /// This class provides beside the core graph features |
---|
515 | /// core erase functions for the graph structure. |
---|
516 | /// The most of the base graphs should be conform to this concept. |
---|
517 | class BaseErasableGraphComponent : virtual public BaseGraphComponent { |
---|
518 | public: |
---|
519 | |
---|
520 | typedef BaseGraphComponent::Node Node; |
---|
521 | typedef BaseGraphComponent::Edge Edge; |
---|
522 | |
---|
523 | /// Erase a Node from the graph. |
---|
524 | |
---|
525 | /// Erase a Node from the graph. This function should not |
---|
526 | /// erase edges connecting to the Node. |
---|
527 | void erase(const Node&) {} |
---|
528 | |
---|
529 | /// Erase an Edge from the graph. |
---|
530 | |
---|
531 | /// Erase an Edge from the graph. |
---|
532 | /// |
---|
533 | void erase(const Edge&) {} |
---|
534 | |
---|
535 | }; |
---|
536 | |
---|
537 | /// Concept check structure for ErasableBaseGraph. |
---|
538 | |
---|
539 | /// Concept check structure for ErasableBaseGraph. |
---|
540 | /// |
---|
541 | template <typename Graph> |
---|
542 | struct BaseErasableGraphComponentConcept { |
---|
543 | void constraints() { |
---|
544 | function_requires< BaseGraphComponentConcept<Graph> >(); |
---|
545 | typename Graph::Node node; |
---|
546 | graph.erase(node); |
---|
547 | typename Graph::Edge edge; |
---|
548 | graph.erase(edge); |
---|
549 | } |
---|
550 | |
---|
551 | Graph& graph; |
---|
552 | }; |
---|
553 | |
---|
554 | /// An empty clearable base graph class. |
---|
555 | |
---|
556 | /// This class provides beside the core graph features |
---|
557 | /// core clear functions for the graph structure. |
---|
558 | /// The most of the base graphs should be conform to this concept. |
---|
559 | class BaseClearableGraphComponent : virtual public BaseGraphComponent { |
---|
560 | public: |
---|
561 | |
---|
562 | /// Erase all the Nodes and Edges from the graph. |
---|
563 | |
---|
564 | /// Erase all the Nodes and Edges from the graph. |
---|
565 | /// |
---|
566 | void clear() {} |
---|
567 | }; |
---|
568 | |
---|
569 | /// Concept check function for ErasableBaseGraph. |
---|
570 | |
---|
571 | /// Concept check function for ErasableBaseGraph. |
---|
572 | /// |
---|
573 | template <typename Graph> |
---|
574 | struct BaseClearableGraphComponentConcept { |
---|
575 | void constraints() { |
---|
576 | function_requires< BaseGraphComponentConcept<Graph> >(); |
---|
577 | graph.clear(); |
---|
578 | } |
---|
579 | |
---|
580 | Graph& graph; |
---|
581 | }; |
---|
582 | |
---|
583 | |
---|
584 | class IterableGraphComponent : |
---|
585 | virtual public BaseIterableGraphComponent { |
---|
586 | |
---|
587 | public: |
---|
588 | |
---|
589 | typedef IterableGraphComponent Graph; |
---|
590 | |
---|
591 | typedef BaseGraphComponent::Node Node; |
---|
592 | typedef BaseGraphComponent::Edge Edge; |
---|
593 | |
---|
594 | class NodeIt : public Node { |
---|
595 | public: |
---|
596 | NodeIt() {} |
---|
597 | NodeIt(Invalid) {} |
---|
598 | // explicit NodeIt(Node) {} |
---|
599 | explicit NodeIt(const Graph&) {} |
---|
600 | |
---|
601 | NodeIt& operator++() { return *this; } |
---|
602 | // Node operator*() const { return INVALID; } |
---|
603 | |
---|
604 | bool operator==(const NodeIt&) const { return true;} |
---|
605 | bool operator!=(const NodeIt&) const { return true;} |
---|
606 | }; |
---|
607 | |
---|
608 | class EdgeIt : public Edge { |
---|
609 | public: |
---|
610 | EdgeIt() {} |
---|
611 | EdgeIt(Invalid) {} |
---|
612 | // explicit EdgeIt(Edge) {} |
---|
613 | explicit EdgeIt(const Graph&) {} |
---|
614 | |
---|
615 | EdgeIt& operator++() { return *this; } |
---|
616 | // Edge operator*() const { return INVALID; } |
---|
617 | |
---|
618 | bool operator==(const EdgeIt&) const { return true;} |
---|
619 | bool operator!=(const EdgeIt&) const { return true;} |
---|
620 | }; |
---|
621 | |
---|
622 | class InEdgeIt : public Edge { |
---|
623 | public: |
---|
624 | InEdgeIt() {} |
---|
625 | InEdgeIt(Invalid) {} |
---|
626 | // explicit InEdgeIt(Edge) {} |
---|
627 | explicit InEdgeIt(const Graph&, const Node&) {} |
---|
628 | |
---|
629 | InEdgeIt& operator++() { return *this; } |
---|
630 | // Edge operator*() const { return INVALID; } |
---|
631 | |
---|
632 | bool operator==(const InEdgeIt&) const { return true;} |
---|
633 | bool operator!=(const InEdgeIt&) const { return true;} |
---|
634 | }; |
---|
635 | |
---|
636 | class OutEdgeIt : public Edge { |
---|
637 | public: |
---|
638 | OutEdgeIt() {} |
---|
639 | OutEdgeIt(Invalid) {} |
---|
640 | // explicit OutEdgeIt(Edge) {} |
---|
641 | explicit OutEdgeIt(const Graph&, const Node&) {} |
---|
642 | |
---|
643 | OutEdgeIt& operator++() { return *this; } |
---|
644 | // Edge operator*() const { return INVALID; } |
---|
645 | |
---|
646 | bool operator==(const OutEdgeIt&) const { return true;} |
---|
647 | bool operator!=(const OutEdgeIt&) const { return true;} |
---|
648 | }; |
---|
649 | |
---|
650 | }; |
---|
651 | |
---|
652 | template <typename Graph> |
---|
653 | struct IterableGraphComponentConcept { |
---|
654 | void constraints() { |
---|
655 | function_requires< BaseIterableGraphComponentConcept<Graph> >(); |
---|
656 | |
---|
657 | typedef typename Graph::Node Node; |
---|
658 | typedef typename Graph::NodeIt NodeIt; |
---|
659 | typedef typename Graph::Edge Edge; |
---|
660 | typedef typename Graph::EdgeIt EdgeIt; |
---|
661 | typedef typename Graph::InEdgeIt InEdgeIt; |
---|
662 | typedef typename Graph::OutEdgeIt OutEdgeIt; |
---|
663 | |
---|
664 | function_requires< GraphIteratorConcept<NodeIt, Graph, Node> >(); |
---|
665 | function_requires< GraphIteratorConcept<EdgeIt, Graph, Edge> >(); |
---|
666 | function_requires< GraphIncIteratorConcept<OutEdgeIt, Graph> >(); |
---|
667 | function_requires< GraphIncIteratorConcept<InEdgeIt, Graph> >(); |
---|
668 | } |
---|
669 | }; |
---|
670 | |
---|
671 | |
---|
672 | class MappableGraphComponent : virtual public BaseGraphComponent { |
---|
673 | public: |
---|
674 | |
---|
675 | typedef MappableGraphComponent Graph; |
---|
676 | |
---|
677 | typedef BaseGraphComponent::Node Node; |
---|
678 | typedef BaseGraphComponent::Edge Edge; |
---|
679 | |
---|
680 | template <typename Value> |
---|
681 | class NodeMap : public ReferenceMap<Node, Value> { |
---|
682 | public: |
---|
683 | NodeMap(const Graph&) {} |
---|
684 | NodeMap(const Graph&, const Value&) {} |
---|
685 | NodeMap(const NodeMap&) {} |
---|
686 | |
---|
687 | NodeMap& operator=(const NodeMap&) { return *this;} |
---|
688 | |
---|
689 | }; |
---|
690 | |
---|
691 | template <typename Value> |
---|
692 | class EdgeMap : public ReferenceMap<Edge, Value> { |
---|
693 | public: |
---|
694 | EdgeMap(const Graph&) {} |
---|
695 | EdgeMap(const Graph&, const Value&) {} |
---|
696 | EdgeMap(const EdgeMap&) {} |
---|
697 | |
---|
698 | EdgeMap& operator=(const EdgeMap&) { return *this;} |
---|
699 | |
---|
700 | }; |
---|
701 | |
---|
702 | }; |
---|
703 | |
---|
704 | template <typename Graph> |
---|
705 | struct MappableGraphComponentConcept { |
---|
706 | |
---|
707 | struct Type { |
---|
708 | int value; |
---|
709 | Type() : value(0) {} |
---|
710 | Type(int _v) : value(_v) {} |
---|
711 | }; |
---|
712 | |
---|
713 | void constraints() { |
---|
714 | function_requires< BaseGraphComponentConcept<Graph> >(); |
---|
715 | { // int map test |
---|
716 | typedef typename Graph::template NodeMap<int> IntNodeMap; |
---|
717 | function_requires<GraphMapConcept<IntNodeMap,Graph> >(); |
---|
718 | } { // bool map test |
---|
719 | typedef typename Graph::template NodeMap<bool> BoolNodeMap; |
---|
720 | function_requires<GraphMapConcept<BoolNodeMap,Graph> >(); |
---|
721 | } { // Type map test |
---|
722 | typedef typename Graph::template NodeMap<Type> TypeNodeMap; |
---|
723 | function_requires<GraphMapConcept<TypeNodeMap,Graph> >(); |
---|
724 | } |
---|
725 | |
---|
726 | { // int map test |
---|
727 | typedef typename Graph::template EdgeMap<int> IntEdgeMap; |
---|
728 | function_requires<GraphMapConcept<IntEdgeMap,Graph> >(); |
---|
729 | } { // bool map test |
---|
730 | typedef typename Graph::template EdgeMap<bool> BoolEdgeMap; |
---|
731 | function_requires<GraphMapConcept<BoolEdgeMap,Graph> >(); |
---|
732 | } { // Type map test |
---|
733 | typedef typename Graph::template EdgeMap<Type> TypeEdgeMap; |
---|
734 | function_requires<GraphMapConcept<TypeEdgeMap,Graph> >(); |
---|
735 | } |
---|
736 | } |
---|
737 | |
---|
738 | Graph& graph; |
---|
739 | }; |
---|
740 | |
---|
741 | |
---|
742 | class ExtendableGraphComponent : virtual public BaseGraphComponent { |
---|
743 | public: |
---|
744 | |
---|
745 | typedef ExtendableGraphComponent Graph; |
---|
746 | |
---|
747 | typedef BaseGraphComponent::Node Node; |
---|
748 | typedef BaseGraphComponent::Edge Edge; |
---|
749 | |
---|
750 | Node addNode() { |
---|
751 | return INVALID; |
---|
752 | } |
---|
753 | |
---|
754 | Edge addEdge(const Node& from, const Node& to) { |
---|
755 | return INVALID; |
---|
756 | } |
---|
757 | |
---|
758 | }; |
---|
759 | |
---|
760 | template <typename Graph> |
---|
761 | struct ExtendableGraphComponentConcept { |
---|
762 | void constraints() { |
---|
763 | function_requires< BaseGraphComponentConcept<Graph> >(); |
---|
764 | typename Graph::Node node_a, node_b; |
---|
765 | node_a = graph.addNode(); |
---|
766 | typename Graph::Edge edge; |
---|
767 | edge = graph.addEdge(node_a, node_b); |
---|
768 | } |
---|
769 | Graph& graph; |
---|
770 | }; |
---|
771 | |
---|
772 | class ErasableGraphComponent : virtual public BaseGraphComponent { |
---|
773 | public: |
---|
774 | |
---|
775 | typedef ErasableGraphComponent Graph; |
---|
776 | |
---|
777 | typedef BaseGraphComponent::Node Node; |
---|
778 | typedef BaseGraphComponent::Edge Edge; |
---|
779 | |
---|
780 | void erase(const Node&) {} |
---|
781 | void erase(const Edge&) {} |
---|
782 | |
---|
783 | }; |
---|
784 | |
---|
785 | template <typename Graph> |
---|
786 | struct ErasableGraphComponentConcept { |
---|
787 | void constraints() { |
---|
788 | function_requires< BaseGraphComponentConcept<Graph> >(); |
---|
789 | typename Graph::Node node; |
---|
790 | graph.erase(node); |
---|
791 | typename Graph::Edge edge; |
---|
792 | graph.erase(edge); |
---|
793 | } |
---|
794 | |
---|
795 | Graph& graph; |
---|
796 | }; |
---|
797 | |
---|
798 | class ClearableGraphComponent : virtual public BaseGraphComponent { |
---|
799 | public: |
---|
800 | |
---|
801 | typedef ClearableGraphComponent Graph; |
---|
802 | |
---|
803 | typedef BaseGraphComponent::Node Node; |
---|
804 | typedef BaseGraphComponent::Edge Edge; |
---|
805 | |
---|
806 | void clear() {} |
---|
807 | |
---|
808 | }; |
---|
809 | |
---|
810 | template <typename Graph> |
---|
811 | struct ClearableGraphComponentConcept { |
---|
812 | void constraints() { |
---|
813 | function_requires< BaseGraphComponentConcept<Graph> >(); |
---|
814 | graph.clear(); |
---|
815 | } |
---|
816 | Graph& graph; |
---|
817 | }; |
---|
818 | |
---|
819 | } |
---|
820 | |
---|
821 | } |
---|
822 | |
---|
823 | #endif |
---|