COIN-OR::LEMON - Graph Library

source: lemon-0.x/lemon/concepts/graph_components.h @ 2351:8e3a00d4678e

Last change on this file since 2351:8e3a00d4678e was 2351:8e3a00d4678e, checked in by Balazs Dezso, 12 years ago

Correction of the wrong base class

File size: 63.9 KB
Line 
1/* -*- C++ -*-
2 *
3 * This file is a part of LEMON, a generic C++ optimization library
4 *
5 * Copyright (C) 2003-2006
6 * Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport
7 * (Egervary Research Group on Combinatorial Optimization, EGRES).
8 *
9 * Permission to use, modify and distribute this software is granted
10 * provided that this copyright notice appears in all copies. For
11 * precise terms see the accompanying LICENSE file.
12 *
13 * This software is provided "AS IS" with no warranty of any kind,
14 * express or implied, and with no claim as to its suitability for any
15 * purpose.
16 *
17 */
18
19///\ingroup graph_concepts
20///\file
21///\brief The concept of the graph components.
22
23
24#ifndef LEMON_CONCEPT_GRAPH_COMPONENTS_H
25#define LEMON_CONCEPT_GRAPH_COMPONENTS_H
26
27#include <lemon/bits/invalid.h>
28#include <lemon/concepts/maps.h>
29
30#include <lemon/bits/alteration_notifier.h>
31
32namespace lemon {
33  namespace concepts {
34
35    /// \brief Skeleton class for graph Node and Edge types
36    ///
37    /// This class describes the interface of Node and Edge (and UEdge
38    /// in undirected graphs) subtypes of graph types.
39    ///
40    /// \note This class is a template class so that we can use it to
41    /// create graph skeleton classes. The reason for this is than Node
42    /// and Edge types should \em not derive from the same base class.
43    /// For Node you should instantiate it with character 'n' and for Edge
44    /// with 'e'.
45
46#ifndef DOXYGEN
47    template <char _selector = '0'>
48#endif
49    class GraphItem {
50    public:
51      /// \brief Default constructor.
52      ///     
53      /// \warning The default constructor is not required to set
54      /// the item to some well-defined value. So you should consider it
55      /// as uninitialized.
56      GraphItem() {}
57      /// \brief Copy constructor.
58      ///
59      /// Copy constructor.
60      ///
61      GraphItem(const GraphItem &) {}
62      /// \brief Invalid constructor \& conversion.
63      ///
64      /// This constructor initializes the item to be invalid.
65      /// \sa Invalid for more details.
66      GraphItem(Invalid) {}
67      /// \brief Assign operator for nodes.
68      ///
69      /// The nodes are assignable.
70      ///
71      GraphItem& operator=(GraphItem const&) { return *this; }
72      /// \brief Equality operator.
73      ///
74      /// Two iterators are equal if and only if they represents the
75      /// same node in the graph or both are invalid.
76      bool operator==(GraphItem) const { return false; }
77      /// \brief Inequality operator.
78      ///
79      /// \sa operator==(const Node& n)
80      ///
81      bool operator!=(GraphItem) const { return false; }
82
83      /// \brief Artificial ordering operator.
84      ///
85      /// To allow the use of graph descriptors as key type in std::map or
86      /// similar associative container we require this.
87      ///
88      /// \note This operator only have to define some strict ordering of
89      /// the items; this order has nothing to do with the iteration
90      /// ordering of the items.
91      bool operator<(GraphItem) const { return false; }
92
93      template<typename _GraphItem>
94      struct Constraints {
95        void constraints() {
96          _GraphItem i1;
97          _GraphItem i2 = i1;
98          _GraphItem i3 = INVALID;
99         
100          i1 = i2 = i3;
101
102          bool b;
103          //      b = (ia == ib) && (ia != ib) && (ia < ib);
104          b = (ia == ib) && (ia != ib);
105          b = (ia == INVALID) && (ib != INVALID);
106          b = (ia < ib);
107        }
108
109        const _GraphItem &ia;
110        const _GraphItem &ib;
111      };
112    };
113
114    /// \brief An empty base graph class.
115    /// 
116    /// This class provides the minimal set of features needed for a graph
117    /// structure. All graph concepts have to be conform to this base
118    /// graph. It just provides types for nodes and edges and functions to
119    /// get the source and the target of the edges.
120    class BaseGraphComponent {
121    public:
122
123      typedef BaseGraphComponent Graph;
124     
125      /// \brief Node class of the graph.
126      ///
127      /// This class represents the Nodes of the graph.
128      ///
129      typedef GraphItem<'n'> Node;
130
131      /// \brief Edge class of the graph.
132      ///
133      /// This class represents the Edges of the graph.
134      ///
135      typedef GraphItem<'e'> Edge;
136
137      /// \brief Gives back the target node of an edge.
138      ///
139      /// Gives back the target node of an edge.
140      ///
141      Node target(const Edge&) const { return INVALID;}
142
143      /// \brief Gives back the source node of an edge.
144      ///
145      /// Gives back the source node of an edge.
146      ///
147      Node source(const Edge&) const { return INVALID;}
148
149      /// \brief Gives back the opposite node on the given edge.
150      ///
151      /// Gives back the opposite node on the given edge.
152      Node oppositeNode(const Node&, const Edge&) const {
153        return INVALID;
154      }
155
156      template <typename _Graph>
157      struct Constraints {
158        typedef typename _Graph::Node Node;
159        typedef typename _Graph::Edge Edge;
160     
161        void constraints() {
162          checkConcept<GraphItem<'n'>, Node>();
163          checkConcept<GraphItem<'e'>, Edge>();
164          {
165            Node n;
166            Edge e(INVALID);
167            n = graph.source(e);
168            n = graph.target(e);
169            n = graph.oppositeNode(n, e);
170          }     
171        }
172     
173        const _Graph& graph;
174      };
175    };
176
177    /// \brief An empty base undirected graph class.
178    /// 
179    /// This class provides the minimal set of features needed for an
180    /// undirected graph structure. All undirected graph concepts have
181    /// to be conform to this base graph. It just provides types for
182    /// nodes, edges and undirected edges and functions to get the
183    /// source and the target of the edges and undirected edges,
184    /// conversion from edges to undirected edges and function to get
185    /// both direction of the undirected edges.
186    class BaseUGraphComponent : public BaseGraphComponent {
187    public:
188      typedef BaseGraphComponent::Node Node;
189      typedef BaseGraphComponent::Edge Edge;
190      /// \brief Undirected edge class of the graph.
191      ///
192      /// This class represents the undirected edges of the graph.
193      /// The undirected graphs can be used as a directed graph which
194      /// for each edge contains the opposite edge too so the graph is
195      /// bidirected. The undirected edge represents two opposite
196      /// directed edges.
197      class UEdge : public GraphItem<'u'> {
198      public:
199        typedef GraphItem<'u'> Parent;
200        /// \brief Default constructor.
201        ///     
202        /// \warning The default constructor is not required to set
203        /// the item to some well-defined value. So you should consider it
204        /// as uninitialized.
205        UEdge() {}
206        /// \brief Copy constructor.
207        ///
208        /// Copy constructor.
209        ///
210        UEdge(const UEdge &) : Parent() {}
211        /// \brief Invalid constructor \& conversion.
212        ///
213        /// This constructor initializes the item to be invalid.
214        /// \sa Invalid for more details.
215        UEdge(Invalid) {}
216        /// \brief Converter from edge to undirected edge.
217        ///
218        /// Besides the core graph item functionality each edge should
219        /// be convertible to the represented undirected edge.
220        UEdge(const Edge&) {}
221        /// \brief Assign edge to undirected edge.
222        ///
223        /// Besides the core graph item functionality each edge should
224        /// be convertible to the represented undirected edge.
225        UEdge& operator=(const Edge&) { return *this; }
226      };
227
228      /// \brief Returns the direction of the edge.
229      ///
230      /// Returns the direction of the edge. Each edge represents an
231      /// undirected edge with a direction. It gives back the
232      /// direction.
233      bool direction(const Edge&) const { return true; }
234
235      /// \brief Returns the directed edge.
236      ///
237      /// Returns the directed edge from its direction and the
238      /// represented undirected edge.
239      Edge direct(const UEdge&, bool) const { return INVALID;}
240
241      /// \brief Returns the directed edge.
242      ///
243      /// Returns the directed edge from its source and the
244      /// represented undirected edge.
245      Edge direct(const UEdge&, const Node&) const { return INVALID;}
246
247      /// \brief Returns the opposite edge.
248      ///
249      /// Returns the opposite edge. It is the edge representing the
250      /// same undirected edge and has opposite direction.
251      Edge oppositeEdge(const Edge&) const { return INVALID;}
252
253      /// \brief Gives back the target node of an undirected edge.
254      ///
255      /// Gives back the target node of an undirected edge. The name
256      /// target is a little confusing because the undirected edge
257      /// does not have target but it just means that one of the end
258      /// node.
259      Node target(const UEdge&) const { return INVALID;}
260
261      /// \brief Gives back the source node of an undirected edge.
262      ///
263      /// Gives back the source node of an undirected edge. The name
264      /// source is a little confusing because the undirected edge
265      /// does not have source but it just means that one of the end
266      /// node.
267      Node source(const UEdge&) const { return INVALID;}
268     
269      template <typename _Graph>
270      struct Constraints {
271        typedef typename _Graph::Node Node;
272        typedef typename _Graph::Edge Edge;
273        typedef typename _Graph::UEdge UEdge;
274     
275        void constraints() {
276          checkConcept<BaseGraphComponent, _Graph>();
277          checkConcept<GraphItem<'u'>, UEdge>();
278          {
279            Node n;
280            UEdge ue(INVALID);
281            Edge e;
282            n = graph.source(ue);
283            n = graph.target(ue);
284            e = graph.direct(ue, true);
285            e = graph.direct(ue, n);
286            e = graph.oppositeEdge(e);
287            ue = e;
288            bool d = graph.direction(e);
289            ignore_unused_variable_warning(d);
290          }     
291        }
292     
293        const _Graph& graph;
294      };
295
296    };
297
298    /// \brief An empty base bipartite undirected graph class.
299    /// 
300    /// This class provides the minimal set of features needed for an
301    /// bipartite undirected graph structure. All bipartite undirected
302    /// graph concepts have to be conform to this base graph. It just
303    /// provides types for nodes, A-nodes, B-nodes, edges and
304    /// undirected edges and functions to get the source and the
305    /// target of the edges and undirected edges, conversion from
306    /// edges to undirected edges and function to get both direction
307    /// of the undirected edges.
308    class BaseBpUGraphComponent : public BaseUGraphComponent {
309    public:
310      typedef BaseUGraphComponent::Node Node;
311      typedef BaseUGraphComponent::Edge Edge;
312      typedef BaseUGraphComponent::UEdge UEdge;
313
314      /// \brief Helper class for A-nodes.
315      ///
316      /// This class is just a helper class for A-nodes, it is not
317      /// suggested to use it directly. It can be converted easily to
318      /// node and vice versa. The usage of this class is limited
319      /// to use just as template parameters for special map types.
320      class ANode : public Node {
321      public:
322        typedef Node Parent;
323
324        /// \brief Default constructor.
325        ///     
326        /// \warning The default constructor is not required to set
327        /// the item to some well-defined value. So you should consider it
328        /// as uninitialized.
329        ANode() {}
330        /// \brief Copy constructor.
331        ///
332        /// Copy constructor.
333        ///
334        ANode(const ANode &) : Parent() {}
335        /// \brief Invalid constructor \& conversion.
336        ///
337        /// This constructor initializes the item to be invalid.
338        /// \sa Invalid for more details.
339        ANode(Invalid) {}
340        /// \brief Converter from node to A-node.
341        ///
342        /// Besides the core graph item functionality each node should
343        /// be convertible to the represented A-node if it is it possible.
344        ANode(const Node&) {}
345        /// \brief Assign node to A-node.
346        ///
347        /// Besides the core graph item functionality each node should
348        /// be convertible to the represented A-node if it is it possible.
349        ANode& operator=(const Node&) { return *this; }
350      };
351
352      /// \brief Helper class for B-nodes.
353      ///
354      /// This class is just a helper class for B-nodes, it is not
355      /// suggested to use it directly. It can be converted easily to
356      /// node and vice versa. The usage of this class is limited
357      /// to use just as template parameters for special map types.
358      class BNode : public Node {
359      public:
360        typedef Node Parent;
361
362        /// \brief Default constructor.
363        ///     
364        /// \warning The default constructor is not required to set
365        /// the item to some well-defined value. So you should consider it
366        /// as uninitialized.
367        BNode() {}
368        /// \brief Copy constructor.
369        ///
370        /// Copy constructor.
371        ///
372        BNode(const BNode &) : Parent() {}
373        /// \brief Invalid constructor \& conversion.
374        ///
375        /// This constructor initializes the item to be invalid.
376        /// \sa Invalid for more details.
377        BNode(Invalid) {}
378        /// \brief Converter from node to B-node.
379        ///
380        /// Besides the core graph item functionality each node should
381        /// be convertible to the represented B-node if it is it possible.
382        BNode(const Node&) {}
383        /// \brief Assign node to B-node.
384        ///
385        /// Besides the core graph item functionality each node should
386        /// be convertible to the represented B-node if it is it possible.
387        BNode& operator=(const Node&) { return *this; }
388      };
389     
390      /// \brief Gives back %true when the node is A-node.
391      ///
392      /// Gives back %true when the node is A-node.
393      bool aNode(const Node&) const { return false; }
394
395      /// \brief Gives back %true when the node is B-node.
396      ///
397      /// Gives back %true when the node is B-node.
398      bool bNode(const Node&) const { return false; }
399
400      /// \brief Gives back the A-node of the undirected edge.
401      ///
402      /// Gives back the A-node of the undirected edge.
403      Node aNode(const UEdge&) const { return INVALID; }
404
405      /// \brief Gives back the B-node of the undirected edge.
406      ///
407      /// Gives back the B-node of the undirected edge.
408      Node bNode(const UEdge&) const { return INVALID; }
409     
410      template <typename _Graph>
411      struct Constraints {
412        typedef typename _Graph::Node Node;
413        typedef typename _Graph::ANode ANode;
414        typedef typename _Graph::BNode BNode;
415        typedef typename _Graph::Edge Edge;
416        typedef typename _Graph::UEdge UEdge;
417     
418        void constraints() {
419          checkConcept<BaseUGraphComponent, _Graph>();
420          checkConcept<GraphItem<'a'>, ANode>();
421          checkConcept<GraphItem<'b'>, BNode>();
422          {
423            Node n;
424            UEdge ue(INVALID);
425            bool b;
426            n = graph.aNode(ue);
427            n = graph.bNode(ue);
428            b = graph.aNode(n);
429            b = graph.bNode(n);
430            ANode an;
431            an = n; n = an;
432            BNode bn;
433            bn = n; n = bn;           
434            ignore_unused_variable_warning(b);
435          }     
436        }
437     
438        const _Graph& graph;
439      };
440
441    };
442
443    /// \brief An empty idable base graph class.
444    /// 
445    /// This class provides beside the core graph features
446    /// core id functions for the graph structure.
447    /// The most of the base graphs should be conform to this concept.
448    /// The id's are unique and immutable.
449    template <typename _Base = BaseGraphComponent>
450    class IDableGraphComponent : public _Base {
451    public:
452
453      typedef _Base Base;
454      typedef typename Base::Node Node;
455      typedef typename Base::Edge Edge;
456
457      /// \brief Gives back an unique integer id for the Node.
458      ///
459      /// Gives back an unique integer id for the Node.
460      ///
461      int id(const Node&) const { return -1;}
462
463      /// \brief Gives back the node by the unique id.
464      ///
465      /// Gives back the node by the unique id.
466      /// If the graph does not contain node with the given id
467      /// then the result of the function is undetermined.
468      Node nodeFromId(int) const { return INVALID;}
469
470      /// \brief Gives back an unique integer id for the Edge.
471      ///
472      /// Gives back an unique integer id for the Edge.
473      ///
474      int id(const Edge&) const { return -1;}
475
476      /// \brief Gives back the edge by the unique id.
477      ///
478      /// Gives back the edge by the unique id.
479      /// If the graph does not contain edge with the given id
480      /// then the result of the function is undetermined.
481      Edge edgeFromId(int) const { return INVALID;}
482
483      /// \brief Gives back an integer greater or equal to the maximum
484      /// Node id.
485      ///
486      /// Gives back an integer greater or equal to the maximum Node
487      /// id.
488      int maxNodeId() const { return -1;}
489
490      /// \brief Gives back an integer greater or equal to the maximum
491      /// Edge id.
492      ///
493      /// Gives back an integer greater or equal to the maximum Edge
494      /// id.
495      int maxEdgeId() const { return -1;}
496
497      template <typename _Graph>
498      struct Constraints {
499
500        void constraints() {
501          checkConcept<Base, _Graph >();
502          typename _Graph::Node node;
503          int nid = graph.id(node);
504          nid = graph.id(node);
505          node = graph.nodeFromId(nid);
506          typename _Graph::Edge edge;
507          int eid = graph.id(edge);
508          eid = graph.id(edge);
509          edge = graph.edgeFromId(eid);
510
511          nid = graph.maxNodeId();
512          ignore_unused_variable_warning(nid);
513          eid = graph.maxEdgeId();
514          ignore_unused_variable_warning(eid);
515        }
516
517        const _Graph& graph;
518      };
519    };
520
521    /// \brief An empty idable base undirected graph class.
522    /// 
523    /// This class provides beside the core undirected graph features
524    /// core id functions for the undirected graph structure.  The
525    /// most of the base undirected graphs should be conform to this
526    /// concept.  The id's are unique and immutable.
527    template <typename _Base = BaseUGraphComponent>
528    class IDableUGraphComponent : public IDableGraphComponent<_Base> {
529    public:
530
531      typedef _Base Base;
532      typedef typename Base::UEdge UEdge;
533
534      using IDableGraphComponent<_Base>::id;
535
536      /// \brief Gives back an unique integer id for the UEdge.
537      ///
538      /// Gives back an unique integer id for the UEdge.
539      ///
540      int id(const UEdge&) const { return -1;}
541
542      /// \brief Gives back the undirected edge by the unique id.
543      ///
544      /// Gives back the undirected edge by the unique id.  If the
545      /// graph does not contain edge with the given id then the
546      /// result of the function is undetermined.
547      UEdge uEdgeFromId(int) const { return INVALID;}
548
549      /// \brief Gives back an integer greater or equal to the maximum
550      /// UEdge id.
551      ///
552      /// Gives back an integer greater or equal to the maximum UEdge
553      /// id.
554      int maxUEdgeId() const { return -1;}
555
556      template <typename _Graph>
557      struct Constraints {
558
559        void constraints() {
560          checkConcept<Base, _Graph >();
561          checkConcept<IDableGraphComponent<Base>, _Graph >();
562          typename _Graph::UEdge uedge;
563          int ueid = graph.id(uedge);
564          ueid = graph.id(uedge);
565          uedge = graph.uEdgeFromId(ueid);
566          ueid = graph.maxUEdgeId();
567          ignore_unused_variable_warning(ueid);
568        }
569
570        const _Graph& graph;
571      };
572    };
573
574    /// \brief An empty idable base bipartite undirected graph class.
575    /// 
576    /// This class provides beside the core bipartite undirected graph
577    /// features core id functions for the bipartite undirected graph
578    /// structure.  The most of the base undirected graphs should be
579    /// conform to this concept.
580    template <typename _Base = BaseBpUGraphComponent>
581    class IDableBpUGraphComponent : public IDableUGraphComponent<_Base> {
582    public:
583
584      typedef _Base Base;
585      typedef typename Base::Node Node;
586
587      using IDableUGraphComponent<_Base>::id;
588
589      /// \brief Gives back an unique integer id for the ANode.
590      ///
591      /// Gives back an unique integer id for the ANode.
592      ///
593      int aNodeId(const Node&) const { return -1;}
594
595      /// \brief Gives back the undirected edge by the unique id.
596      ///
597      /// Gives back the undirected edge by the unique id.  If the
598      /// graph does not contain edge with the given id then the
599      /// result of the function is undetermined.
600      Node nodeFromANodeId(int) const { return INVALID;}
601
602      /// \brief Gives back an integer greater or equal to the maximum
603      /// ANode id.
604      ///
605      /// Gives back an integer greater or equal to the maximum ANode
606      /// id.
607      int maxANodeId() const { return -1;}
608
609      /// \brief Gives back an unique integer id for the BNode.
610      ///
611      /// Gives back an unique integer id for the BNode.
612      ///
613      int bNodeId(const Node&) const { return -1;}
614
615      /// \brief Gives back the undirected edge by the unique id.
616      ///
617      /// Gives back the undirected edge by the unique id.  If the
618      /// graph does not contain edge with the given id then the
619      /// result of the function is undetermined.
620      Node nodeFromBNodeId(int) const { return INVALID;}
621
622      /// \brief Gives back an integer greater or equal to the maximum
623      /// BNode id.
624      ///
625      /// Gives back an integer greater or equal to the maximum BNode
626      /// id.
627      int maxBNodeId() const { return -1;}
628
629      template <typename _Graph>
630      struct Constraints {
631
632        void constraints() {
633          checkConcept<Base, _Graph >();
634          checkConcept<IDableGraphComponent<Base>, _Graph >();
635          typename _Graph::Node node(INVALID);
636          int id;
637          id = graph.aNodeId(node);
638          id = graph.bNodeId(node);
639          node = graph.nodeFromANodeId(id);
640          node = graph.nodeFromBNodeId(id);
641          id = graph.maxANodeId();
642          id = graph.maxBNodeId();
643        }
644
645        const _Graph& graph;
646      };
647    };
648
649    /// \brief Skeleton class for graph NodeIt and EdgeIt
650    ///
651    /// Skeleton class for graph NodeIt and EdgeIt.
652    ///
653    template <typename _Graph, typename _Item>
654    class GraphItemIt : public _Item {
655    public:
656      /// \brief Default constructor.
657      ///
658      /// @warning The default constructor sets the iterator
659      /// to an undefined value.
660      GraphItemIt() {}
661      /// \brief Copy constructor.
662      ///
663      /// Copy constructor.
664      ///
665      GraphItemIt(const GraphItemIt& ) {}
666      /// \brief Sets the iterator to the first item.
667      ///
668      /// Sets the iterator to the first item of \c the graph.
669      ///
670      explicit GraphItemIt(const _Graph&) {}
671      /// \brief Invalid constructor \& conversion.
672      ///
673      /// This constructor initializes the item to be invalid.
674      /// \sa Invalid for more details.
675      GraphItemIt(Invalid) {}
676      /// \brief Assign operator for items.
677      ///
678      /// The items are assignable.
679      ///
680      GraphItemIt& operator=(const GraphItemIt&) { return *this; }     
681      /// \brief Next item.
682      ///
683      /// Assign the iterator to the next item.
684      ///
685      GraphItemIt& operator++() { return *this; }
686      /// \brief Equality operator
687      ///
688      /// Two iterators are equal if and only if they point to the
689      /// same object or both are invalid.
690      bool operator==(const GraphItemIt&) const { return true;}
691      /// \brief Inequality operator
692      ///       
693      /// \sa operator==(Node n)
694      ///
695      bool operator!=(const GraphItemIt&) const { return true;}
696     
697      template<typename _GraphItemIt>
698      struct Constraints {
699        void constraints() {
700          _GraphItemIt it1(g); 
701          _GraphItemIt it2;
702
703          it2 = ++it1;
704          ++it2 = it1;
705          ++(++it1);
706
707          _Item bi = it1;
708          bi = it2;
709        }
710        _Graph& g;
711      };
712    };
713
714    /// \brief Skeleton class for graph InEdgeIt and OutEdgeIt
715    ///
716    /// \note Because InEdgeIt and OutEdgeIt may not inherit from the same
717    /// base class, the _selector is a additional template parameter. For
718    /// InEdgeIt you should instantiate it with character 'i' and for
719    /// OutEdgeIt with 'o'.
720    template <typename _Graph,
721              typename _Item = typename _Graph::Edge,
722              typename _Base = typename _Graph::Node,
723              char _selector = '0'>
724    class GraphIncIt : public _Item {
725    public:
726      /// \brief Default constructor.
727      ///
728      /// @warning The default constructor sets the iterator
729      /// to an undefined value.
730      GraphIncIt() {}
731      /// \brief Copy constructor.
732      ///
733      /// Copy constructor.
734      ///
735      GraphIncIt(GraphIncIt const& gi) : _Item(gi) {}
736      /// \brief Sets the iterator to the first edge incoming into or outgoing
737      /// from the node.
738      ///
739      /// Sets the iterator to the first edge incoming into or outgoing
740      /// from the node.
741      ///
742      explicit GraphIncIt(const _Graph&, const _Base&) {}
743      /// \brief Invalid constructor \& conversion.
744      ///
745      /// This constructor initializes the item to be invalid.
746      /// \sa Invalid for more details.
747      GraphIncIt(Invalid) {}
748      /// \brief Assign operator for iterators.
749      ///
750      /// The iterators are assignable.
751      ///
752      GraphIncIt& operator=(GraphIncIt const&) { return *this; }     
753      /// \brief Next item.
754      ///
755      /// Assign the iterator to the next item.
756      ///
757      GraphIncIt& operator++() { return *this; }
758
759      /// \brief Equality operator
760      ///
761      /// Two iterators are equal if and only if they point to the
762      /// same object or both are invalid.
763      bool operator==(const GraphIncIt&) const { return true;}
764
765      /// \brief Inequality operator
766      ///
767      /// \sa operator==(Node n)
768      ///
769      bool operator!=(const GraphIncIt&) const { return true;}
770
771      template <typename _GraphIncIt>
772      struct Constraints {
773        void constraints() {
774          checkConcept<GraphItem<_selector>, _GraphIncIt>();
775          _GraphIncIt it1(graph, node);
776          _GraphIncIt it2;
777
778          it2 = ++it1;
779          ++it2 = it1;
780          ++(++it1);
781          _Item e = it1;
782          e = it2;
783
784        }
785
786        _Item edge;
787        _Base node;
788        _Graph graph;
789        _GraphIncIt it;
790      };
791    };
792
793
794    /// \brief An empty iterable graph class.
795    ///
796    /// This class provides beside the core graph features
797    /// iterator based iterable interface for the graph structure.
798    /// This concept is part of the Graph concept.
799    template <typename _Base = BaseGraphComponent>
800    class IterableGraphComponent : public _Base {
801
802    public:
803   
804      typedef _Base Base;
805      typedef typename Base::Node Node;
806      typedef typename Base::Edge Edge;
807
808      typedef IterableGraphComponent Graph;
809
810      /// \name Base iteration
811      ///
812      /// This interface provides functions for iteration on graph items
813      ///
814      /// @{ 
815
816      /// \brief Gives back the first node in the iterating order.
817      ///     
818      /// Gives back the first node in the iterating order.
819      ///     
820      void first(Node&) const {}
821
822      /// \brief Gives back the next node in the iterating order.
823      ///
824      /// Gives back the next node in the iterating order.
825      ///     
826      void next(Node&) const {}
827
828      /// \brief Gives back the first edge in the iterating order.
829      ///
830      /// Gives back the first edge in the iterating order.
831      ///     
832      void first(Edge&) const {}
833
834      /// \brief Gives back the next edge in the iterating order.
835      ///
836      /// Gives back the next edge in the iterating order.
837      ///     
838      void next(Edge&) const {}
839
840
841      /// \brief Gives back the first of the edges point to the given
842      /// node.
843      ///
844      /// Gives back the first of the edges point to the given node.
845      ///     
846      void firstIn(Edge&, const Node&) const {}
847
848      /// \brief Gives back the next of the edges points to the given
849      /// node.
850      ///
851      /// Gives back the next of the edges points to the given node.
852      ///
853      void nextIn(Edge&) const {}
854
855      /// \brief Gives back the first of the edges start from the
856      /// given node.
857      ///     
858      /// Gives back the first of the edges start from the given node.
859      ///     
860      void firstOut(Edge&, const Node&) const {}
861
862      /// \brief Gives back the next of the edges start from the given
863      /// node.
864      ///
865      /// Gives back the next of the edges start from the given node.
866      ///     
867      void nextOut(Edge&) const {}
868
869      /// @}
870
871      /// \name Class based iteration
872      ///
873      /// This interface provides functions for iteration on graph items
874      ///
875      /// @{
876
877      /// \brief This iterator goes through each node.
878      ///
879      /// This iterator goes through each node.
880      ///
881      typedef GraphItemIt<Graph, Node> NodeIt;
882
883      /// \brief This iterator goes through each node.
884      ///
885      /// This iterator goes through each node.
886      ///
887      typedef GraphItemIt<Graph, Edge> EdgeIt;
888
889      /// \brief This iterator goes trough the incoming edges of a node.
890      ///
891      /// This iterator goes trough the \e inccoming edges of a certain node
892      /// of a graph.
893      typedef GraphIncIt<Graph, Edge, Node, 'i'> InEdgeIt;
894
895      /// \brief This iterator goes trough the outgoing edges of a node.
896      ///
897      /// This iterator goes trough the \e outgoing edges of a certain node
898      /// of a graph.
899      typedef GraphIncIt<Graph, Edge, Node, 'o'> OutEdgeIt;
900
901      /// \brief The base node of the iterator.
902      ///
903      /// Gives back the base node of the iterator.
904      /// It is always the target of the pointed edge.
905      Node baseNode(const InEdgeIt&) const { return INVALID; }
906
907      /// \brief The running node of the iterator.
908      ///
909      /// Gives back the running node of the iterator.
910      /// It is always the source of the pointed edge.
911      Node runningNode(const InEdgeIt&) const { return INVALID; }
912
913      /// \brief The base node of the iterator.
914      ///
915      /// Gives back the base node of the iterator.
916      /// It is always the source of the pointed edge.
917      Node baseNode(const OutEdgeIt&) const { return INVALID; }
918
919      /// \brief The running node of the iterator.
920      ///
921      /// Gives back the running node of the iterator.
922      /// It is always the target of the pointed edge.
923      Node runningNode(const OutEdgeIt&) const { return INVALID; }
924
925      /// @}
926
927      template <typename _Graph>
928      struct Constraints {
929        void constraints() {
930          checkConcept<Base, _Graph>();
931
932          {
933            typename _Graph::Node node(INVALID);     
934            typename _Graph::Edge edge(INVALID);
935            {
936              graph.first(node);
937              graph.next(node);
938            }
939            {
940              graph.first(edge);
941              graph.next(edge);
942            }
943            {
944              graph.firstIn(edge, node);
945              graph.nextIn(edge);
946            }
947            {
948              graph.firstOut(edge, node);
949              graph.nextOut(edge);
950            }
951          }           
952
953          {
954            checkConcept<GraphItemIt<_Graph, typename _Graph::Edge>,
955              typename _Graph::EdgeIt >();
956            checkConcept<GraphItemIt<_Graph, typename _Graph::Node>,
957              typename _Graph::NodeIt >();
958            checkConcept<GraphIncIt<_Graph, typename _Graph::Edge,
959              typename _Graph::Node, 'i'>, typename _Graph::InEdgeIt>();
960            checkConcept<GraphIncIt<_Graph, typename _Graph::Edge,
961              typename _Graph::Node, 'o'>, typename _Graph::OutEdgeIt>();
962
963            typename _Graph::Node n;
964            typename _Graph::InEdgeIt ieit(INVALID);
965            typename _Graph::OutEdgeIt oeit(INVALID);
966            n = graph.baseNode(ieit);
967            n = graph.runningNode(ieit);
968            n = graph.baseNode(oeit);
969            n = graph.runningNode(oeit);
970            ignore_unused_variable_warning(n);
971          }
972        }
973       
974        const _Graph& graph;
975       
976      };
977    };
978
979    /// \brief An empty iterable undirected graph class.
980    ///
981    /// This class provides beside the core graph features iterator
982    /// based iterable interface for the undirected graph structure.
983    /// This concept is part of the UGraph concept.
984    template <typename _Base = BaseUGraphComponent>
985    class IterableUGraphComponent : public IterableGraphComponent<_Base> {
986    public:
987
988      typedef _Base Base;
989      typedef typename Base::Node Node;
990      typedef typename Base::Edge Edge;
991      typedef typename Base::UEdge UEdge;
992
993   
994      typedef IterableUGraphComponent Graph;
995
996      /// \name Base iteration
997      ///
998      /// This interface provides functions for iteration on graph items
999      /// @{ 
1000
1001      using IterableGraphComponent<_Base>::first;
1002      using IterableGraphComponent<_Base>::next;
1003
1004      /// \brief Gives back the first undirected edge in the iterating
1005      /// order.
1006      ///
1007      /// Gives back the first undirected edge in the iterating order.
1008      ///     
1009      void first(UEdge&) const {}
1010
1011      /// \brief Gives back the next undirected edge in the iterating
1012      /// order.
1013      ///
1014      /// Gives back the next undirected edge in the iterating order.
1015      ///     
1016      void next(UEdge&) const {}
1017
1018
1019      /// \brief Gives back the first of the undirected edges from the
1020      /// given node.
1021      ///
1022      /// Gives back the first of the undirected edges from the given
1023      /// node. The bool parameter gives back that direction which
1024      /// gives a good direction of the uedge so the source of the
1025      /// directed edge is the given node.
1026      void firstInc(UEdge&, bool&, const Node&) const {}
1027
1028      /// \brief Gives back the next of the undirected edges from the
1029      /// given node.
1030      ///
1031      /// Gives back the next of the undirected edges from the given
1032      /// node. The bool parameter should be used as the \c firstInc()
1033      /// use it.
1034      void nextInc(UEdge&, bool&) const {}
1035
1036      using IterableGraphComponent<_Base>::baseNode;
1037      using IterableGraphComponent<_Base>::runningNode;
1038
1039      /// @}
1040
1041      /// \name Class based iteration
1042      ///
1043      /// This interface provides functions for iteration on graph items
1044      ///
1045      /// @{
1046
1047      /// \brief This iterator goes through each node.
1048      ///
1049      /// This iterator goes through each node.
1050      typedef GraphItemIt<Graph, UEdge> UEdgeIt;
1051      /// \brief This iterator goes trough the incident edges of a
1052      /// node.
1053      ///
1054      /// This iterator goes trough the incident edges of a certain
1055      /// node of a graph.
1056      typedef GraphIncIt<Graph, UEdge, Node, 'u'> IncEdgeIt;
1057      /// \brief The base node of the iterator.
1058      ///
1059      /// Gives back the base node of the iterator.
1060      Node baseNode(const IncEdgeIt&) const { return INVALID; }
1061
1062      /// \brief The running node of the iterator.
1063      ///
1064      /// Gives back the running node of the iterator.
1065      Node runningNode(const IncEdgeIt&) const { return INVALID; }
1066
1067      /// @}
1068
1069      template <typename _Graph>
1070      struct Constraints {
1071        void constraints() {
1072          checkConcept<IterableGraphComponent<Base>, _Graph>();
1073
1074          {
1075            typename _Graph::Node node(INVALID);
1076            typename _Graph::UEdge uedge(INVALID);
1077            bool dir;
1078            {
1079              graph.first(uedge);
1080              graph.next(uedge);
1081            }
1082            {
1083              graph.firstInc(uedge, dir, node);
1084              graph.nextInc(uedge, dir);
1085            }
1086           
1087          }     
1088 
1089          {
1090            checkConcept<GraphItemIt<_Graph, typename _Graph::UEdge>,
1091              typename _Graph::UEdgeIt >();
1092            checkConcept<GraphIncIt<_Graph, typename _Graph::UEdge,
1093              typename _Graph::Node, 'u'>, typename _Graph::IncEdgeIt>();
1094           
1095            typename _Graph::Node n;
1096            typename _Graph::IncEdgeIt ueit(INVALID);
1097            n = graph.baseNode(ueit);
1098            n = graph.runningNode(ueit);
1099          }
1100        }
1101       
1102        const _Graph& graph;
1103       
1104      };
1105    };
1106
1107    /// \brief An empty iterable bipartite undirected graph class.
1108    ///
1109    /// This class provides beside the core graph features iterator
1110    /// based iterable interface for the bipartite undirected graph
1111    /// structure. This concept is part of the BpUGraph concept.
1112    template <typename _Base = BaseUGraphComponent>
1113    class IterableBpUGraphComponent : public IterableUGraphComponent<_Base> {
1114    public:
1115
1116      typedef _Base Base;
1117      typedef typename Base::Node Node;
1118      typedef typename Base::UEdge UEdge;
1119   
1120      typedef IterableBpUGraphComponent Graph;
1121
1122      /// \name Base iteration
1123      ///
1124      /// This interface provides functions for iteration on graph items
1125      /// @{ 
1126
1127      using IterableUGraphComponent<_Base>::first;
1128      using IterableUGraphComponent<_Base>::next;
1129
1130      /// \brief Gives back the first A-node in the iterating order.
1131      ///
1132      /// Gives back the first undirected A-node in the iterating
1133      /// order.
1134      ///     
1135      void firstANode(Node&) const {}
1136
1137      /// \brief Gives back the next A-node in the iterating order.
1138      ///
1139      /// Gives back the next A-node in the iterating order.
1140      ///     
1141      void nextANode(Node&) const {}
1142
1143      /// \brief Gives back the first B-node in the iterating order.
1144      ///
1145      /// Gives back the first undirected B-node in the iterating
1146      /// order.
1147      ///     
1148      void firstBNode(Node&) const {}
1149
1150      /// \brief Gives back the next B-node in the iterating order.
1151      ///
1152      /// Gives back the next B-node in the iterating order.
1153      ///     
1154      void nextBNode(Node&) const {}
1155
1156
1157      /// \brief Gives back the first of the undirected edges start
1158      /// from the given A-node.
1159      ///     
1160      /// Gives back the first of the undirected edges start from the
1161      /// given A-node.
1162      void firstFromANode(UEdge&, const Node&) const {}
1163
1164      /// \brief Gives back the next of the undirected edges start
1165      /// from the given A-node.
1166      ///     
1167      /// Gives back the next of the undirected edges start from the
1168      /// given A-node.
1169      void nextFromANode(UEdge&) const {}
1170
1171      /// \brief Gives back the first of the undirected edges start
1172      /// from the given B-node.
1173      ///     
1174      /// Gives back the first of the undirected edges start from the
1175      /// given B-node.
1176      void firstFromBNode(UEdge&, const Node&) const {}
1177
1178      /// \brief Gives back the next of the undirected edges start
1179      /// from the given B-node.
1180      ///     
1181      /// Gives back the next of the undirected edges start from the
1182      /// given B-node.
1183      void nextFromBNode(UEdge&) const {}
1184
1185
1186      /// @}
1187
1188      /// \name Class based iteration
1189      ///
1190      /// This interface provides functions for iteration on graph items
1191      ///
1192      /// @{
1193
1194      /// \brief This iterator goes through each A-node.
1195      ///
1196      /// This iterator goes through each A-node.
1197      typedef GraphItemIt<Graph, Node> ANodeIt;
1198
1199      /// \brief This iterator goes through each B-node.
1200      ///
1201      /// This iterator goes through each B-node.
1202      typedef GraphItemIt<Graph, Node> BNodeIt;
1203
1204      /// @}
1205
1206      template <typename _Graph>
1207      struct Constraints {
1208        void constraints() {
1209          checkConcept<IterableUGraphComponent<Base>, _Graph>();
1210
1211          {
1212            typename _Graph::Node node(INVALID);
1213            typename _Graph::UEdge uedge(INVALID);
1214            graph.firstANode(node);
1215            graph.nextANode(node);
1216            graph.firstBNode(node);
1217            graph.nextBNode(node);
1218
1219            graph.firstFromANode(uedge, node);
1220            graph.nextFromANode(uedge);
1221            graph.firstFromBNode(uedge, node);
1222            graph.nextFromBNode(uedge);
1223          }
1224          {
1225            checkConcept<GraphItemIt<_Graph, typename _Graph::Node>,
1226              typename _Graph::ANodeIt >();
1227            checkConcept<GraphItemIt<_Graph, typename _Graph::Node>,
1228              typename _Graph::BNodeIt >();
1229          }
1230
1231        }
1232       
1233        const _Graph& graph;
1234       
1235      };
1236    };
1237
1238    /// \brief An empty alteration notifier graph class.
1239    /// 
1240    /// This class provides beside the core graph features alteration
1241    /// notifier interface for the graph structure.  This implements
1242    /// an observer-notifier pattern for each graph item. More
1243    /// obsevers can be registered into the notifier and whenever an
1244    /// alteration occured in the graph all the observers will
1245    /// notified about it.
1246    template <typename _Base = BaseGraphComponent>
1247    class AlterableGraphComponent : public _Base {
1248    public:
1249
1250      typedef _Base Base;
1251      typedef typename Base::Node Node;
1252      typedef typename Base::Edge Edge;
1253
1254
1255      /// The node observer registry.
1256      typedef AlterationNotifier<AlterableGraphComponent, Node>
1257      NodeNotifier;
1258      /// The edge observer registry.
1259      typedef AlterationNotifier<AlterableGraphComponent, Edge>
1260      EdgeNotifier;
1261     
1262      /// \brief Gives back the node alteration notifier.
1263      ///
1264      /// Gives back the node alteration notifier.
1265      NodeNotifier& getNotifier(Node) const {
1266        return NodeNotifier();
1267      }
1268     
1269      /// \brief Gives back the edge alteration notifier.
1270      ///
1271      /// Gives back the edge alteration notifier.
1272      EdgeNotifier& getNotifier(Edge) const {
1273        return EdgeNotifier();
1274      }
1275
1276      template <typename _Graph>
1277      struct Constraints {
1278        void constraints() {
1279          checkConcept<Base, _Graph>();
1280          typename _Graph::NodeNotifier& nn
1281            = graph.getNotifier(typename _Graph::Node());
1282
1283          typename _Graph::EdgeNotifier& en
1284            = graph.getNotifier(typename _Graph::Edge());
1285         
1286          ignore_unused_variable_warning(nn);
1287          ignore_unused_variable_warning(en);
1288        }
1289       
1290        const _Graph& graph;
1291       
1292      };
1293     
1294    };
1295
1296    /// \brief An empty alteration notifier undirected graph class.
1297    /// 
1298    /// This class provides beside the core graph features alteration
1299    /// notifier interface for the graph structure.  This implements
1300    /// an observer-notifier pattern for each graph item. More
1301    /// obsevers can be registered into the notifier and whenever an
1302    /// alteration occured in the graph all the observers will
1303    /// notified about it.
1304    template <typename _Base = BaseUGraphComponent>
1305    class AlterableUGraphComponent : public AlterableGraphComponent<_Base> {
1306    public:
1307
1308      typedef _Base Base;
1309      typedef typename Base::UEdge UEdge;
1310
1311
1312      /// The edge observer registry.
1313      typedef AlterationNotifier<AlterableUGraphComponent, UEdge>
1314      UEdgeNotifier;
1315     
1316      /// \brief Gives back the edge alteration notifier.
1317      ///
1318      /// Gives back the edge alteration notifier.
1319      UEdgeNotifier& getNotifier(UEdge) const {
1320        return UEdgeNotifier();
1321      }
1322
1323      template <typename _Graph>
1324      struct Constraints {
1325        void constraints() {
1326          checkConcept<AlterableGraphComponent<Base>, _Graph>();
1327          typename _Graph::UEdgeNotifier& uen
1328            = graph.getNotifier(typename _Graph::UEdge());
1329          ignore_unused_variable_warning(uen);
1330        }
1331       
1332        const _Graph& graph;
1333       
1334      };
1335     
1336    };
1337
1338    /// \brief An empty alteration notifier bipartite undirected graph
1339    /// class.
1340    /// 
1341    /// This class provides beside the core graph features alteration
1342    /// notifier interface for the graph structure.  This implements
1343    /// an observer-notifier pattern for each graph item. More
1344    /// obsevers can be registered into the notifier and whenever an
1345    /// alteration occured in the graph all the observers will
1346    /// notified about it.
1347    template <typename _Base = BaseUGraphComponent>
1348    class AlterableBpUGraphComponent : public AlterableUGraphComponent<_Base> {
1349    public:
1350
1351      typedef _Base Base;
1352      typedef typename Base::ANode ANode;
1353      typedef typename Base::BNode BNode;
1354
1355
1356      /// The A-node observer registry.
1357      typedef AlterationNotifier<AlterableBpUGraphComponent, ANode>
1358      ANodeNotifier;
1359
1360      /// The B-node observer registry.
1361      typedef AlterationNotifier<AlterableBpUGraphComponent, BNode>
1362      BNodeNotifier;
1363     
1364      /// \brief Gives back the A-node alteration notifier.
1365      ///
1366      /// Gives back the A-node alteration notifier.
1367      ANodeNotifier& getNotifier(ANode) const {
1368        return ANodeNotifier();
1369      }
1370
1371      /// \brief Gives back the B-node alteration notifier.
1372      ///
1373      /// Gives back the B-node alteration notifier.
1374      BNodeNotifier& getNotifier(BNode) const {
1375        return BNodeNotifier();
1376      }
1377
1378      template <typename _Graph>
1379      struct Constraints {
1380        void constraints() {
1381          checkConcept<AlterableUGraphComponent<Base>, _Graph>();
1382          typename _Graph::ANodeNotifier& ann
1383            = graph.getNotifier(typename _Graph::ANode());
1384          typename _Graph::BNodeNotifier& bnn
1385            = graph.getNotifier(typename _Graph::BNode());
1386          ignore_unused_variable_warning(ann);
1387          ignore_unused_variable_warning(bnn);
1388        }
1389       
1390        const _Graph& graph;
1391       
1392      };
1393     
1394    };
1395
1396
1397    /// \brief Class describing the concept of graph maps
1398    ///
1399    /// This class describes the common interface of the graph maps
1400    /// (NodeMap, EdgeMap), that is \ref maps-page "maps" which can be used to
1401    /// associate data to graph descriptors (nodes or edges).
1402    template <typename _Graph, typename _Item, typename _Value>
1403    class GraphMap : public ReadWriteMap<_Item, _Value> {
1404    public:
1405
1406      typedef ReadWriteMap<_Item, _Value> Parent;
1407
1408      /// The graph type of the map.
1409      typedef _Graph Graph;
1410      /// The key type of the map.
1411      typedef _Item Key;
1412      /// The value type of the map.
1413      typedef _Value Value;
1414
1415      /// \brief Construct a new map.
1416      ///
1417      /// Construct a new map for the graph.
1418      explicit GraphMap(const Graph&) {}
1419      /// \brief Construct a new map with default value.
1420      ///
1421      /// Construct a new map for the graph and initalise the values.
1422      GraphMap(const Graph&, const Value&) {}
1423      /// \brief Copy constructor.
1424      ///
1425      /// Copy Constructor.
1426      GraphMap(const GraphMap&) : Parent() {}
1427     
1428      /// \brief Assign operator.
1429      ///
1430      /// Assign operator. It does not mofify the underlying graph,
1431      /// it just iterates on the current item set and set the  map
1432      /// with the value returned by the assigned map.
1433      template <typename CMap>
1434      GraphMap& operator=(const CMap&) {
1435        checkConcept<ReadMap<Key, Value>, CMap>();
1436        return *this;
1437      }
1438
1439      template<typename _Map>
1440      struct Constraints {
1441        void constraints() {
1442          checkConcept<ReadWriteMap<Key, Value>, _Map >();
1443          // Construction with a graph parameter
1444          _Map a(g);
1445          // Constructor with a graph and a default value parameter
1446          _Map a2(g,t);
1447          // Copy constructor.
1448          _Map b(c);
1449         
1450          ReadMap<Key, Value> cmap;
1451          b = cmap;
1452
1453          ignore_unused_variable_warning(a2);
1454          ignore_unused_variable_warning(b);
1455        }
1456
1457        const _Map &c;
1458        const Graph &g;
1459        const typename GraphMap::Value &t;
1460      };
1461
1462    };
1463
1464    /// \brief An empty mappable graph class.
1465    ///
1466    /// This class provides beside the core graph features
1467    /// map interface for the graph structure.
1468    /// This concept is part of the Graph concept.
1469    template <typename _Base = BaseGraphComponent>
1470    class MappableGraphComponent : public _Base  {
1471    public:
1472
1473      typedef _Base Base;
1474      typedef typename Base::Node Node;
1475      typedef typename Base::Edge Edge;
1476
1477      typedef MappableGraphComponent Graph;
1478
1479      /// \brief ReadWrite map of the nodes.
1480      ///
1481      /// ReadWrite map of the nodes.
1482      ///
1483      template <typename _Value>
1484      class NodeMap : public GraphMap<Graph, Node, _Value> {
1485      private:
1486        NodeMap();
1487      public:
1488        typedef GraphMap<MappableGraphComponent, Node, _Value> Parent;
1489
1490        /// \brief Construct a new map.
1491        ///
1492        /// Construct a new map for the graph.
1493        /// \todo call the right parent class constructor
1494        explicit NodeMap(const MappableGraphComponent& graph)
1495          : Parent(graph) {}
1496
1497        /// \brief Construct a new map with default value.
1498        ///
1499        /// Construct a new map for the graph and initalise the values.
1500        NodeMap(const MappableGraphComponent& graph, const _Value& value)
1501          : Parent(graph, value) {}
1502
1503        /// \brief Copy constructor.
1504        ///
1505        /// Copy Constructor.
1506        NodeMap(const NodeMap& nm) : Parent(nm) {}
1507
1508        /// \brief Assign operator.
1509        ///
1510        /// Assign operator.
1511        template <typename CMap>
1512        NodeMap& operator=(const CMap&) {
1513          checkConcept<ReadMap<Node, _Value>, CMap>();
1514          return *this;
1515        }
1516
1517      };
1518
1519      /// \brief ReadWrite map of the edges.
1520      ///
1521      /// ReadWrite map of the edges.
1522      ///
1523      template <typename _Value>
1524      class EdgeMap : public GraphMap<Graph, Edge, _Value> {
1525      private:
1526        EdgeMap();
1527      public:
1528        typedef GraphMap<MappableGraphComponent, Edge, _Value> Parent;
1529
1530        /// \brief Construct a new map.
1531        ///
1532        /// Construct a new map for the graph.
1533        /// \todo call the right parent class constructor
1534        explicit EdgeMap(const MappableGraphComponent& graph)
1535          : Parent(graph) {}
1536
1537        /// \brief Construct a new map with default value.
1538        ///
1539        /// Construct a new map for the graph and initalise the values.
1540        EdgeMap(const MappableGraphComponent& graph, const _Value& value)
1541          : Parent(graph, value) {}
1542
1543        /// \brief Copy constructor.
1544        ///
1545        /// Copy Constructor.
1546        EdgeMap(const EdgeMap& nm) : Parent(nm) {}
1547
1548        /// \brief Assign operator.
1549        ///
1550        /// Assign operator.
1551        template <typename CMap>
1552        EdgeMap& operator=(const CMap&) {
1553          checkConcept<ReadMap<Edge, _Value>, CMap>();
1554          return *this;
1555        }
1556
1557      };
1558
1559
1560      template <typename _Graph>
1561      struct Constraints {
1562
1563        struct Dummy {
1564          int value;
1565          Dummy() : value(0) {}
1566          Dummy(int _v) : value(_v) {}
1567        };
1568
1569        void constraints() {
1570          checkConcept<Base, _Graph>();
1571          { // int map test
1572            typedef typename _Graph::template NodeMap<int> IntNodeMap;
1573            checkConcept<GraphMap<_Graph, typename _Graph::Node, int>,
1574              IntNodeMap >();
1575          } { // bool map test
1576            typedef typename _Graph::template NodeMap<bool> BoolNodeMap;
1577            checkConcept<GraphMap<_Graph, typename _Graph::Node, bool>,
1578              BoolNodeMap >();
1579          } { // Dummy map test
1580            typedef typename _Graph::template NodeMap<Dummy> DummyNodeMap;
1581            checkConcept<GraphMap<_Graph, typename _Graph::Node, Dummy>,
1582              DummyNodeMap >();
1583          }
1584
1585          { // int map test
1586            typedef typename _Graph::template EdgeMap<int> IntEdgeMap;
1587            checkConcept<GraphMap<_Graph, typename _Graph::Edge, int>,
1588              IntEdgeMap >();
1589          } { // bool map test
1590            typedef typename _Graph::template EdgeMap<bool> BoolEdgeMap;
1591            checkConcept<GraphMap<_Graph, typename _Graph::Edge, bool>,
1592              BoolEdgeMap >();
1593          } { // Dummy map test
1594            typedef typename _Graph::template EdgeMap<Dummy> DummyEdgeMap;
1595            checkConcept<GraphMap<_Graph, typename _Graph::Edge, Dummy>,
1596              DummyEdgeMap >();
1597          }
1598        }
1599
1600        _Graph& graph;
1601      };
1602    };
1603
1604    /// \brief An empty mappable base bipartite undirected graph class.
1605    ///
1606    /// This class provides beside the core graph features
1607    /// map interface for the graph structure.
1608    /// This concept is part of the UGraph concept.
1609    template <typename _Base = BaseUGraphComponent>
1610    class MappableUGraphComponent : public MappableGraphComponent<_Base>  {
1611    public:
1612
1613      typedef _Base Base;
1614      typedef typename Base::UEdge UEdge;
1615
1616      typedef MappableUGraphComponent Graph;
1617
1618      /// \brief ReadWrite map of the uedges.
1619      ///
1620      /// ReadWrite map of the uedges.
1621      ///
1622      template <typename _Value>
1623      class UEdgeMap : public GraphMap<Graph, UEdge, _Value> { 
1624      public:
1625        typedef GraphMap<MappableUGraphComponent, UEdge, _Value> Parent;
1626
1627        /// \brief Construct a new map.
1628        ///
1629        /// Construct a new map for the graph.
1630        /// \todo call the right parent class constructor
1631        explicit UEdgeMap(const MappableUGraphComponent& graph)
1632          : Parent(graph) {}
1633
1634        /// \brief Construct a new map with default value.
1635        ///
1636        /// Construct a new map for the graph and initalise the values.
1637        UEdgeMap(const MappableUGraphComponent& graph, const _Value& value)
1638          : Parent(graph, value) {}
1639
1640        /// \brief Copy constructor.
1641        ///
1642        /// Copy Constructor.
1643        UEdgeMap(const UEdgeMap& nm) : Parent(nm) {}
1644
1645        /// \brief Assign operator.
1646        ///
1647        /// Assign operator.
1648        template <typename CMap>
1649        UEdgeMap& operator=(const CMap&) {
1650          checkConcept<ReadMap<UEdge, _Value>, CMap>();
1651          return *this;
1652        }
1653
1654      };
1655
1656
1657      template <typename _Graph>
1658      struct Constraints {
1659
1660        struct Dummy {
1661          int value;
1662          Dummy() : value(0) {}
1663          Dummy(int _v) : value(_v) {}
1664        };
1665
1666        void constraints() {
1667          checkConcept<MappableGraphComponent<Base>, _Graph>();
1668
1669          { // int map test
1670            typedef typename _Graph::template UEdgeMap<int> IntUEdgeMap;
1671            checkConcept<GraphMap<_Graph, typename _Graph::UEdge, int>,
1672              IntUEdgeMap >();
1673          } { // bool map test
1674            typedef typename _Graph::template UEdgeMap<bool> BoolUEdgeMap;
1675            checkConcept<GraphMap<_Graph, typename _Graph::UEdge, bool>,
1676              BoolUEdgeMap >();
1677          } { // Dummy map test
1678            typedef typename _Graph::template UEdgeMap<Dummy> DummyUEdgeMap;
1679            checkConcept<GraphMap<_Graph, typename _Graph::UEdge, Dummy>,
1680              DummyUEdgeMap >();
1681          }
1682        }
1683
1684        _Graph& graph;
1685      };
1686    };
1687
1688    /// \brief An empty mappable base bipartite undirected graph
1689    /// class.
1690    ///
1691    /// This class provides beside the core graph features
1692    /// map interface for the graph structure.
1693    /// This concept is part of the BpUGraph concept.
1694    template <typename _Base = BaseBpUGraphComponent>
1695    class MappableBpUGraphComponent : public MappableUGraphComponent<_Base>  {
1696    public:
1697
1698      typedef _Base Base;
1699      typedef typename Base::Node Node;
1700
1701      typedef MappableBpUGraphComponent Graph;
1702
1703      /// \brief ReadWrite map of the A-nodes.
1704      ///
1705      /// ReadWrite map of the A-nodes.
1706      ///
1707      template <typename _Value>
1708      class ANodeMap : public GraphMap<Graph, Node, _Value> { 
1709      public:
1710        typedef GraphMap<MappableBpUGraphComponent, Node, _Value> Parent;
1711
1712        /// \brief Construct a new map.
1713        ///
1714        /// Construct a new map for the graph.
1715        /// \todo call the right parent class constructor
1716        explicit ANodeMap(const MappableBpUGraphComponent& graph)
1717          : Parent(graph) {}
1718
1719        /// \brief Construct a new map with default value.
1720        ///
1721        /// Construct a new map for the graph and initalise the values.
1722        ANodeMap(const MappableBpUGraphComponent& graph, const _Value& value)
1723          : Parent(graph, value) {}
1724
1725        /// \brief Copy constructor.
1726        ///
1727        /// Copy Constructor.
1728        ANodeMap(const ANodeMap& nm) : Parent(nm) {}
1729
1730        /// \brief Assign operator.
1731        ///
1732        /// Assign operator.
1733        template <typename CMap>
1734        ANodeMap& operator=(const CMap&) {
1735          checkConcept<ReadMap<Node, _Value>, CMap>();
1736          return *this;
1737        }
1738
1739      };
1740
1741      /// \brief ReadWrite map of the B-nodes.
1742      ///
1743      /// ReadWrite map of the A-nodes.
1744      ///
1745      template <typename _Value>
1746      class BNodeMap : public GraphMap<Graph, Node, _Value> { 
1747      public:
1748        typedef GraphMap<MappableBpUGraphComponent, Node, _Value> Parent;
1749
1750        /// \brief Construct a new map.
1751        ///
1752        /// Construct a new map for the graph.
1753        /// \todo call the right parent class constructor
1754        explicit BNodeMap(const MappableBpUGraphComponent& graph)
1755          : Parent(graph) {}
1756
1757        /// \brief Construct a new map with default value.
1758        ///
1759        /// Construct a new map for the graph and initalise the values.
1760        BNodeMap(const MappableBpUGraphComponent& graph, const _Value& value)
1761          : Parent(graph, value) {}
1762
1763        /// \brief Copy constructor.
1764        ///
1765        /// Copy Constructor.
1766        BNodeMap(const BNodeMap& nm) : Parent(nm) {}
1767
1768        /// \brief Assign operator.
1769        ///
1770        /// Assign operator.
1771        template <typename CMap>
1772        BNodeMap& operator=(const CMap&) {
1773          checkConcept<ReadMap<Node, _Value>, CMap>();
1774          return *this;
1775        }
1776
1777      };
1778
1779
1780      template <typename _Graph>
1781      struct Constraints {
1782
1783        struct Dummy {
1784          int value;
1785          Dummy() : value(0) {}
1786          Dummy(int _v) : value(_v) {}
1787        };
1788
1789        void constraints() {
1790          checkConcept<MappableUGraphComponent<Base>, _Graph>();
1791
1792          { // int map test
1793            typedef typename _Graph::template ANodeMap<int> IntANodeMap;
1794            checkConcept<GraphMap<_Graph, typename _Graph::ANode, int>,
1795              IntANodeMap >();
1796          } { // bool map test
1797            typedef typename _Graph::template ANodeMap<bool> BoolANodeMap;
1798            checkConcept<GraphMap<_Graph, typename _Graph::ANode, bool>,
1799              BoolANodeMap >();
1800          } { // Dummy map test
1801            typedef typename _Graph::template ANodeMap<Dummy> DummyANodeMap;
1802            checkConcept<GraphMap<_Graph, typename _Graph::ANode, Dummy>,
1803              DummyANodeMap >();
1804          }
1805        }
1806
1807        _Graph& graph;
1808      };
1809    };
1810
1811
1812    /// \brief An empty extendable graph class.
1813    ///
1814    /// This class provides beside the core graph features graph
1815    /// extendable interface for the graph structure.  The main
1816    /// difference between the base and this interface is that the
1817    /// graph alterations should handled already on this level.
1818    template <typename _Base = BaseGraphComponent>
1819    class ExtendableGraphComponent : public _Base {
1820    public:
1821      typedef _Base Base;
1822
1823      typedef typename _Base::Node Node;
1824      typedef typename _Base::Edge Edge;
1825
1826      /// \brief Adds a new node to the graph.
1827      ///
1828      /// Adds a new node to the graph.
1829      ///
1830      Node addNode() {
1831        return INVALID;
1832      }
1833   
1834      /// \brief Adds a new edge connects the given two nodes.
1835      ///
1836      /// Adds a new edge connects the the given two nodes.
1837      Edge addEdge(const Node&, const Node&) {
1838        return INVALID;
1839      }
1840
1841      template <typename _Graph>
1842      struct Constraints {
1843        void constraints() {
1844          checkConcept<Base, _Graph>();
1845          typename _Graph::Node node_a, node_b;
1846          node_a = graph.addNode();
1847          node_b = graph.addNode();
1848          typename _Graph::Edge edge;
1849          edge = graph.addEdge(node_a, node_b);
1850        }
1851
1852        _Graph& graph;
1853      };
1854    };
1855
1856    /// \brief An empty extendable base undirected graph class.
1857    ///
1858    /// This class provides beside the core undirected graph features
1859    /// core undircted graph extend interface for the graph structure.
1860    /// The main difference between the base and this interface is
1861    /// that the graph alterations should handled already on this
1862    /// level.
1863    template <typename _Base = BaseUGraphComponent>
1864    class ExtendableUGraphComponent : public _Base {
1865    public:
1866
1867      typedef _Base Base;
1868      typedef typename _Base::Node Node;
1869      typedef typename _Base::UEdge UEdge;
1870
1871      /// \brief Adds a new node to the graph.
1872      ///
1873      /// Adds a new node to the graph.
1874      ///
1875      Node addNode() {
1876        return INVALID;
1877      }
1878   
1879      /// \brief Adds a new edge connects the given two nodes.
1880      ///
1881      /// Adds a new edge connects the the given two nodes.
1882      UEdge addEdge(const Node&, const Node&) {
1883        return INVALID;
1884      }
1885
1886      template <typename _Graph>
1887      struct Constraints {
1888        void constraints() {
1889          checkConcept<Base, _Graph>();
1890          typename _Graph::Node node_a, node_b;
1891          node_a = graph.addNode();
1892          node_b = graph.addNode();
1893          typename _Graph::UEdge uedge;
1894          uedge = graph.addUEdge(node_a, node_b);
1895        }
1896
1897        _Graph& graph;
1898      };
1899    };
1900
1901    /// \brief An empty extendable base undirected graph class.
1902    ///
1903    /// This class provides beside the core bipartite undirected graph
1904    /// features core undircted graph extend interface for the graph
1905    /// structure.  The main difference between the base and this
1906    /// interface is that the graph alterations should handled already
1907    /// on this level.
1908    template <typename _Base = BaseBpUGraphComponent>
1909    class ExtendableBpUGraphComponent
1910      : public ExtendableUGraphComponent<_Base> {
1911
1912      typedef _Base Base;
1913
1914      template <typename _Graph>
1915      struct Constraints {
1916        void constraints() {
1917          checkConcept<ExtendableUGraphComponent<Base>, _Graph>();
1918        }
1919      };
1920    };
1921
1922    /// \brief An empty erasable graph class.
1923    /// 
1924    /// This class provides beside the core graph features core erase
1925    /// functions for the graph structure. The main difference between
1926    /// the base and this interface is that the graph alterations
1927    /// should handled already on this level.
1928    template <typename _Base = BaseGraphComponent>
1929    class ErasableGraphComponent : public _Base {
1930    public:
1931
1932      typedef _Base Base;
1933      typedef typename Base::Node Node;
1934      typedef typename Base::Edge Edge;
1935
1936      /// \brief Erase a node from the graph.
1937      ///
1938      /// Erase a node from the graph. This function should
1939      /// erase all edges connecting to the node.
1940      void erase(const Node&) {}   
1941
1942      /// \brief Erase an edge from the graph.
1943      ///
1944      /// Erase an edge from the graph.
1945      ///
1946      void erase(const Edge&) {}
1947
1948      template <typename _Graph>
1949      struct Constraints {
1950        void constraints() {
1951          checkConcept<Base, _Graph>();
1952          typename _Graph::Node node;
1953          graph.erase(node);
1954          typename _Graph::Edge edge;
1955          graph.erase(edge);
1956        }
1957
1958        _Graph& graph;
1959      };
1960    };
1961
1962    /// \brief An empty erasable base undirected graph class.
1963    /// 
1964    /// This class provides beside the core undirected graph features
1965    /// core erase functions for the undirceted graph structure. The
1966    /// main difference between the base and this interface is that
1967    /// the graph alterations should handled already on this level.
1968    template <typename _Base = BaseUGraphComponent>
1969    class ErasableUGraphComponent : public _Base {
1970    public:
1971
1972      typedef _Base Base;
1973      typedef typename Base::Node Node;
1974      typedef typename Base::UEdge UEdge;
1975
1976      /// \brief Erase a node from the graph.
1977      ///
1978      /// Erase a node from the graph. This function should erase
1979      /// edges connecting to the node.
1980      void erase(const Node&) {}   
1981
1982      /// \brief Erase an edge from the graph.
1983      ///
1984      /// Erase an edge from the graph.
1985      ///
1986      void erase(const UEdge&) {}
1987
1988      template <typename _Graph>
1989      struct Constraints {
1990        void constraints() {
1991          checkConcept<Base, _Graph>();
1992          typename _Graph::Node node;
1993          graph.erase(node);
1994          typename _Graph::Edge edge;
1995          graph.erase(edge);
1996        }
1997
1998        _Graph& graph;
1999      };
2000    };
2001
2002    /// \brief An empty erasable base bipartite undirected graph class.
2003    /// 
2004    /// This class provides beside the core bipartite undirected graph
2005    /// features core erase functions for the undirceted graph
2006    /// structure. The main difference between the base and this
2007    /// interface is that the graph alterations should handled already
2008    /// on this level.
2009    template <typename _Base = BaseBpUGraphComponent>
2010    class ErasableBpUGraphComponent : public ErasableUGraphComponent<_Base> {
2011    public:
2012
2013      typedef _Base Base;
2014
2015      template <typename _Graph>
2016      struct Constraints {
2017        void constraints() {
2018          checkConcept<ErasableUGraphComponent<Base>, _Graph>();
2019        }
2020      };
2021    };
2022
2023    /// \brief An empty clearable base graph class.
2024    ///
2025    /// This class provides beside the core graph features core clear
2026    /// functions for the graph structure. The main difference between
2027    /// the base and this interface is that the graph alterations
2028    /// should handled already on this level.
2029    template <typename _Base = BaseGraphComponent>
2030    class ClearableGraphComponent : public _Base {
2031    public:
2032
2033      typedef _Base Base;
2034
2035      /// \brief Erase all nodes and edges from the graph.
2036      ///
2037      /// Erase all nodes and edges from the graph.
2038      ///
2039      void clear() {}   
2040
2041      template <typename _Graph>
2042      struct Constraints {
2043        void constraints() {
2044          checkConcept<Base, _Graph>();
2045          graph.clear();
2046        }
2047
2048        _Graph graph;
2049      };
2050    };
2051
2052    /// \brief An empty clearable base undirected graph class.
2053    ///
2054    /// This class provides beside the core undirected graph features
2055    /// core clear functions for the undirected graph structure. The
2056    /// main difference between the base and this interface is that
2057    /// the graph alterations should handled already on this level.
2058    template <typename _Base = BaseUGraphComponent>
2059    class ClearableUGraphComponent : public ClearableGraphComponent<_Base> {
2060    public:
2061
2062      typedef _Base Base;
2063
2064      template <typename _Graph>
2065      struct Constraints {
2066        void constraints() {
2067          checkConcept<ClearableUGraphComponent<Base>, _Graph>();
2068        }
2069
2070        _Graph graph;
2071      };
2072    };
2073
2074    /// \brief An empty clearable base bipartite undirected graph
2075    /// class.
2076    ///
2077    /// This class provides beside the core bipartite undirected graph
2078    /// features core clear functions for the undirected graph
2079    /// structure. The main difference between the base and this
2080    /// interface is that the graph alterations should handled already
2081    /// on this level.
2082    template <typename _Base = BaseUGraphComponent>
2083    class ClearableBpUGraphComponent : public ClearableUGraphComponent<_Base> {
2084    public:
2085
2086      typedef _Base Base;
2087
2088      template <typename _Graph>
2089      struct Constraints {
2090        void constraints() {
2091          checkConcept<ClearableBpUGraphComponent<Base>, _Graph>();
2092        }
2093
2094      };
2095
2096    };
2097
2098  }
2099
2100}
2101
2102#endif
Note: See TracBrowser for help on using the repository browser.