LEMON/LEMON-main Changeset - r57:c1acf0018c0a

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Changeset - r57:c1acf0018c0a

« 55:9bd0d6

58:5f1f53 »

r57:c1acf0018c0a

Sun, 20 Jan 2008 20:43:48

[Not Reviewed]

0 comments (0 inline)

deba@inf.elte.hu
deba@inf.elte.hu

Port ListDigraph and ListGraph from svn -r 3433 Details: - port Digraph and Graph concepts - port ListDigraph and ListGraph - port Basic graph constructing tools - port Digraph and Graph tests

0 3 15

default

18 files changed with 7825 insertions and 1 deletions:

lemon/bits/alteration_notifier.h

485

lemon/bits/array_map.h

346

lemon/bits/base_extender.h

495

lemon/bits/default_map.h

181

lemon/bits/graph_extender.h

747

lemon/bits/map_extender.h

321

lemon/bits/traits.h

272

lemon/bits/vector_map.h

243

lemon/concepts/digraph.h

453

lemon/concepts/graph.h

702

lemon/concepts/graph_components.h

1490

test/digraph_test.cc

test/digraph_test.h

188

test/graph_test.cc

207

test/map_test.h

149

lemon/Makefile.am

lemon/list_graph.h

1449

test/Makefile.am

↑ Collapse diff ↑

lemon/bits/alteration_notifier.h

Show inline comments

 		/* -*- C++ -*-
+		 *
 		 * This file is a part of LEMON, a generic C++ optimization library
+		 *
 		 * Copyright (C) 2003-2007
 		 * Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport
 		 * (Egervary Research Group on Combinatorial Optimization, EGRES).
+		 *
 		 * Permission to use, modify and distribute this software is granted
 		 * provided that this copyright notice appears in all copies. For
 		 * precise terms see the accompanying LICENSE file.
+		 *
 		 * This software is provided "AS IS" with no warranty of any kind,
 		 * express or implied, and with no claim as to its suitability for any
 		 * purpose.
+		 *
 		 */
 		#ifndef LEMON_BITS_ALTERATION_NOTIFIER_H
 		#define LEMON_BITS_ALTERATION_NOTIFIER_H
 		#include <vector>
 		#include <list>
 		#include <lemon/bits/utility.h>
 		///\ingroup graphbits
 		///\file
 		///\brief Observer notifier for graph alteration observers.
 		namespace lemon {
 		  /// \ingroup graphbits
 		  ///
 		  /// \brief Notifier class to notify observes about alterations in
 		  /// a container.
 		  ///
 		  /// The simple graph's can be refered as two containers, one node container
 		  /// and one edge container. But they are not standard containers they
 		  /// does not store values directly they are just key continars for more
 		  /// value containers which are the node and edge maps.
 		  ///
 		  /// The graph's node and edge sets can be changed as we add or erase
 		  /// nodes and edges in the graph. Lemon would like to handle easily
 		  /// that the node and edge maps should contain values for all nodes or
 		  /// edges. If we want to check on every indicing if the map contains
 		  /// the current indicing key that cause a drawback in the performance
 		  /// in the library. We use another solution we notify all maps about
 		  /// an alteration in the graph, which cause only drawback on the
 		  /// alteration of the graph.
 		  ///
 		  /// This class provides an interface to the container. The \e first() and \e
 		  /// next() member functions make possible to iterate on the keys of the
 		  /// container. The \e id() function returns an integer id for each key.
 		  /// The \e maxId() function gives back an upper bound of the ids.
 		  ///
 		  /// For the proper functonality of this class, we should notify it
 		  /// about each alteration in the container. The alterations have four type
 		  /// as \e add(), \e erase(), \e build() and \e clear(). The \e add() and
 		  /// \e erase() signals that only one or few items added or erased to or
 		  /// from the graph. If all items are erased from the graph or from an empty
 		  /// graph a new graph is builded then it can be signaled with the
 		  /// clear() and build() members. Important rule that if we erase items
 		  /// from graph we should first signal the alteration and after that erase
 		  /// them from the container, on the other way on item addition we should
 		  /// first extend the container and just after that signal the alteration.
 		  ///
 		  /// The alteration can be observed with a class inherited from the
 		  /// \e ObserverBase nested class. The signals can be handled with
 		  /// overriding the virtual functions defined in the base class.  The
 		  /// observer base can be attached to the notifier with the
 		  /// \e attach() member and can be detached with detach() function. The
 		  /// alteration handlers should not call any function which signals
 		  /// an other alteration in the same notifier and should not
 		  /// detach any observer from the notifier.
 		  ///
 		  /// Alteration observers try to be exception safe. If an \e add() or
 		  /// a \e clear() function throws an exception then the remaining
 		  /// observeres will not be notified and the fulfilled additions will
 		  /// be rolled back by calling the \e erase() or \e clear()
 		  /// functions. Thence the \e erase() and \e clear() should not throw
 		  /// exception. Actullay, it can be throw only
 		  /// \ref AlterationObserver::ImmediateDetach ImmediateDetach
 		  /// exception which detach the observer from the notifier.
 		  ///
 		  /// There are some place when the alteration observing is not completly
 		  /// reliable. If we want to carry out the node degree in the graph
 		  /// as in the \ref InDegMap and we use the reverseEdge that cause
 		  /// unreliable functionality. Because the alteration observing signals
 		  /// only erasing and adding but not the reversing it will stores bad
 		  /// degrees. The sub graph adaptors cannot signal the alterations because
 		  /// just a setting in the filter map can modify the graph and this cannot
 		  /// be watched in any way.
 		  ///
 		  /// \param _Container The container which is observed.
 		  /// \param _Item The item type which is obserbved.
 		  ///
 		  /// \author Balazs Dezso
 		  template <typename _Container, typename _Item>
 		  class AlterationNotifier {
 		  public:
 		    typedef True Notifier;
 		    typedef _Container Container;
 		    typedef _Item Item;
 		    /// \brief Exception which can be called from \e clear() and
 		    /// \e erase().
 		    ///
 		    /// From the \e clear() and \e erase() function only this
 		    /// exception is allowed to throw. The exception immediatly
 		    /// detaches the current observer from the notifier. Because the
 		    /// \e clear() and \e erase() should not throw other exceptions
 		    /// it can be used to invalidate the observer.
 		    struct ImmediateDetach {};
 		    /// \brief ObserverBase is the base class for the observers.
 		    ///
 		    /// ObserverBase is the abstract base class for the observers.
 		    /// It will be notified about an item was inserted into or
 		    /// erased from the graph.
 		    ///
 		    /// The observer interface contains some pure virtual functions
 		    /// to override. The add() and erase() functions are
 		    /// to notify the oberver when one item is added or
 		    /// erased.
 		    ///
 		    /// The build() and clear() members are to notify the observer
 		    /// about the container is built from an empty container or
 		    /// is cleared to an empty container.
 		    ///
 		    /// \author Balazs Dezso
 		    class ObserverBase {
 		    protected:
 		      typedef AlterationNotifier Notifier;
 		      friend class AlterationNotifier;
 		      /// \brief Default constructor.
 		      ///
 		      /// Default constructor for ObserverBase.
 		      ///
 		      ObserverBase() : _notifier(0) {}
 		      /// \brief Constructor which attach the observer into notifier.
 		      ///
 		      /// Constructor which attach the observer into notifier.
 		      ObserverBase(AlterationNotifier& nf) {
 		        attach(nf);
+		      }
 		      /// \brief Constructor which attach the obserever to the same notifier.
 		      ///
 		      /// Constructor which attach the obserever to the same notifier as
 		      /// the other observer is attached to.
 		      ObserverBase(const ObserverBase& copy) {
 			if (copy.attached()) {
 		          attach(*copy.notifier());
+			}
+		      }
 		      /// \brief Destructor
 		      virtual ~ObserverBase() {
 		        if (attached()) {
 		          detach();
+		        }
+		      }
 		      /// \brief Attaches the observer into an AlterationNotifier.
 		      ///
 		      /// This member attaches the observer into an AlterationNotifier.
 		      ///
 		      void attach(AlterationNotifier& nf) {
 			nf.attach(*this);
+		      }
 		      /// \brief Detaches the observer into an AlterationNotifier.
 		      ///
 		      /// This member detaches the observer from an AlterationNotifier.
 		      ///
 		      void detach() {
 		        _notifier->detach(*this);
+		      }
 		      /// \brief Gives back a pointer to the notifier which the map
 		      /// attached into.
 		      ///
 		      /// This function gives back a pointer to the notifier which the map
 		      /// attached into.
 		      ///
 		      Notifier* notifier() const { return const_cast<Notifier*>(_notifier); }
 		      /// Gives back true when the observer is attached into a notifier.
 		      bool attached() const { return _notifier != 0; }
 		    private:
 		      ObserverBase& operator=(const ObserverBase& copy);
 		    protected:
 		      Notifier* _notifier;
 		      typename std::list<ObserverBase*>::iterator _index;
 		      /// \brief The member function to notificate the observer about an
 		      /// item is added to the container.
 		      ///
 		      /// The add() member function notificates the observer about an item
 		      /// is added to the container. It have to be overrided in the
 		      /// subclasses.
 		      virtual void add(const Item&) = 0;
 		      /// \brief The member function to notificate the observer about
 		      /// more item is added to the container.
 		      ///
 		      /// The add() member function notificates the observer about more item
 		      /// is added to the container. It have to be overrided in the
 		      /// subclasses.
 		      virtual void add(const std::vector<Item>& items) = 0;
 		      /// \brief The member function to notificate the observer about an
 		      /// item is erased from the container.
 		      ///
 		      /// The erase() member function notificates the observer about an
 		      /// item is erased from the container. It have to be overrided in
 		      /// the subclasses.
 		      virtual void erase(const Item&) = 0;
 		      /// \brief The member function to notificate the observer about
 		      /// more item is erased from the container.
 		      ///
 		      /// The erase() member function notificates the observer about more item
 		      /// is erased from the container. It have to be overrided in the
 		      /// subclasses.
 		      virtual void erase(const std::vector<Item>& items) = 0;
 		      /// \brief The member function to notificate the observer about the
 		      /// container is built.
 		      ///
 		      /// The build() member function notificates the observer about the
 		      /// container is built from an empty container. It have to be
 		      /// overrided in the subclasses.
 		      virtual void build() = 0;
 		      /// \brief The member function to notificate the observer about all
 		      /// items are erased from the container.
 		      ///
 		      /// The clear() member function notificates the observer about all
 		      /// items are erased from the container. It have to be overrided in
 		      /// the subclasses.
 		      virtual void clear() = 0;
 		    };
 		  protected:
 		    const Container* container;
 		    typedef std::list<ObserverBase*> Observers;
 		    Observers _observers;
 		  public:
 		    /// \brief Default constructor.
 		    ///
 		    /// The default constructor of the AlterationNotifier.
 		    /// It creates an empty notifier.
 		    AlterationNotifier()
 		      : container(0) {}
 		    /// \brief Constructor.
 		    ///
 		    /// Constructor with the observed container parameter.
 		    AlterationNotifier(const Container& _container)
 		      : container(&_container) {}
 		    /// \brief Copy Constructor of the AlterationNotifier.
 		    ///
 		    /// Copy constructor of the AlterationNotifier.
 		    /// It creates only an empty notifier because the copiable
 		    /// notifier's observers have to be registered still into that notifier.
 		    AlterationNotifier(const AlterationNotifier& _notifier)
 		      : container(_notifier.container) {}
 		    /// \brief Destructor.
 		    ///
 		    /// Destructor of the AlterationNotifier.
 		    ///
 		    ~AlterationNotifier() {
 		      typename Observers::iterator it;
 		      for (it = _observers.begin(); it != _observers.end(); ++it) {
 			(*it)->_notifier = 0;
+		      }
+		    }
 		    /// \brief Sets the container.
 		    ///
 		    /// Sets the container.
 		    void setContainer(const Container& _container) {
 		      container = &_container;
+		    }
 		  protected:
 		    AlterationNotifier& operator=(const AlterationNotifier&);
 		  public:
 		    /// \brief First item in the container.
 		    ///
 		    /// Returns the first item in the container. It is
 		    /// for start the iteration on the container.
 		    void first(Item& item) const {
 		      container->first(item);
+		    }
 		    /// \brief Next item in the container.
 		    ///
 		    /// Returns the next item in the container. It is
 		    /// for iterate on the container.
 		    void next(Item& item) const {
 		      container->next(item);
+		    }
 		    /// \brief Returns the id of the item.
 		    ///
 		    /// Returns the id of the item provided by the container.
 		    int id(const Item& item) const {
 		      return container->id(item);
+		    }
 		    /// \brief Returns the maximum id of the container.
 		    ///
 		    /// Returns the maximum id of the container.
 		    int maxId() const {
 		      return container->maxId(Item());
+		    }
 		  protected:
 		    void attach(ObserverBase& observer) {
 		      observer._index = _observers.insert(_observers.begin(), &observer);
 		      observer._notifier = this;
+		    }
 		    void detach(ObserverBase& observer) {
 		      _observers.erase(observer._index);
 		      observer._index = _observers.end();
 		      observer._notifier = 0;
+		    }
 		  public:
 		    /// \brief Notifies all the registed observers about an item added to
 		    /// the container.
 		    ///
 		    /// It notifies all the registed observers about an item added to
 		    /// the container.
 		    ///
 		    void add(const Item& item) {
 		      typename Observers::reverse_iterator it;
 		      try {
 		        for (it = _observers.rbegin(); it != _observers.rend(); ++it) {
 		          (*it)->add(item);
+		        }
 		      } catch (...) {
 		        typename Observers::iterator jt;
 		        for (jt = it.base(); jt != _observers.end(); ++jt) {
 		          (*jt)->erase(item);
+		        }
 		        throw;
+		      }
+		    }
 		    /// \brief Notifies all the registed observers about more item added to
 		    /// the container.
 		    ///
 		    /// It notifies all the registed observers about more item added to
 		    /// the container.
 		    ///
 		    void add(const std::vector<Item>& items) {
 		      typename Observers::reverse_iterator it;
 		      try {
 		        for (it = _observers.rbegin(); it != _observers.rend(); ++it) {
 		          (*it)->add(items);
+		        }
 		      } catch (...) {
 		        typename Observers::iterator jt;
 		        for (jt = it.base(); jt != _observers.end(); ++jt) {
 		          (*jt)->erase(items);
+		        }
 		        throw;
+		      }
+		    }
 		    /// \brief Notifies all the registed observers about an item erased from
 		    /// the container.
 		    ///
 		    /// It notifies all the registed observers about an item erased from
 		    /// the container.
 		    ///
 		    void erase(const Item& item) throw() {
 		      typename Observers::iterator it = _observers.begin();
 		      while (it != _observers.end()) {
 		        try {
 		          (*it)->erase(item);
 		          ++it;
 		        } catch (const ImmediateDetach&) {
 		          it = _observers.erase(it);
 		          (*it)->_index = _observers.end();
 		          (*it)->_notifier = 0;
+		        }
+		      }
+		    }
 		    /// \brief Notifies all the registed observers about more item erased
 		    /// from the container.
 		    ///
 		    /// It notifies all the registed observers about more item erased from
 		    /// the container.
 		    ///
 		    void erase(const std::vector<Item>& items) {
 		      typename Observers::iterator it = _observers.begin();
 		      while (it != _observers.end()) {
 		        try {
 		          (*it)->erase(items);
 		          ++it;
 		        } catch (const ImmediateDetach&) {
 		          it = _observers.erase(it);
 		          (*it)->_index = _observers.end();
 		          (*it)->_notifier = 0;
+		        }
+		      }
+		    }
 		    /// \brief Notifies all the registed observers about the container is
 		    /// built.
 		    ///
 		    /// Notifies all the registed observers about the container is built
 		    /// from an empty container.
 		    void build() {
 		      typename Observers::reverse_iterator it;
 		      try {
 		        for (it = _observers.rbegin(); it != _observers.rend(); ++it) {
 		          (*it)->build();
+		        }
 		      } catch (...) {
 		        typename Observers::iterator jt;
 		        for (jt = it.base(); jt != _observers.end(); ++jt) {
 		          (*jt)->clear();
+		        }
 		        throw;
+		      }
+		    }
 		    /// \brief Notifies all the registed observers about all items are
 		    /// erased.
 		    ///
 		    /// Notifies all the registed observers about all items are erased
 		    /// from the container.
 		    void clear() {
 		      typename Observers::iterator it = _observers.begin();
 		      while (it != _observers.end()) {
 		        try {
 		          (*it)->clear();
 		          ++it;
 		        } catch (const ImmediateDetach&) {
 		          it = _observers.erase(it);
 		          (*it)->_index = _observers.end();
 		          (*it)->_notifier = 0;
+		        }
+		      }
+		    }
 		  };
+		}
 		#endif

lemon/bits/array_map.h

Show inline comments

 		/* -*- C++ -*-
+		 *
 		 * This file is a part of LEMON, a generic C++ optimization library
+		 *
 		 * Copyright (C) 2003-2007
 		 * Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport
 		 * (Egervary Research Group on Combinatorial Optimization, EGRES).
+		 *
 		 * Permission to use, modify and distribute this software is granted
 		 * provided that this copyright notice appears in all copies. For
 		 * precise terms see the accompanying LICENSE file.
+		 *
 		 * This software is provided "AS IS" with no warranty of any kind,
 		 * express or implied, and with no claim as to its suitability for any
 		 * purpose.
+		 *
 		 */
 		#ifndef LEMON_BITS_ARRAY_MAP_H
 		#define LEMON_BITS_ARRAY_MAP_H
 		#include <memory>
 		#include <lemon/bits/traits.h>
 		#include <lemon/bits/alteration_notifier.h>
 		#include <lemon/concept_check.h>
 		#include <lemon/concepts/maps.h>
 		/// \ingroup graphbits
 		/// \file
 		/// \brief Graph map based on the array storage.
 		namespace lemon {
 		  /// \ingroup graphbits
 		  ///
 		  /// \brief Graph map based on the array storage.
 		  ///
 		  /// The ArrayMap template class is graph map structure what
 		  /// automatically updates the map when a key is added to or erased from
 		  /// the map. This map uses the allocators to implement
 		  /// the container functionality.
 		  ///
 		  /// The template parameters are the Graph the current Item type and
 		  /// the Value type of the map.
 		  template <typename _Graph, typename _Item, typename _Value>
 		  class ArrayMap
 		    : public ItemSetTraits<_Graph, _Item>::ItemNotifier::ObserverBase {
 		  public:
 		    /// The graph type of the maps.
 		    typedef _Graph Graph;
 		    /// The item type of the map.
 		    typedef _Item Item;
 		    /// The reference map tag.
 		    typedef True ReferenceMapTag;
 		    /// The key type of the maps.
 		    typedef _Item Key;
 		    /// The value type of the map.
 		    typedef _Value Value;
 		    /// The const reference type of the map.
 		    typedef const _Value& ConstReference;
 		    /// The reference type of the map.
 		    typedef _Value& Reference;
 		    /// The notifier type.
 		    typedef typename ItemSetTraits<_Graph, _Item>::ItemNotifier Notifier;
 		    /// The MapBase of the Map which imlements the core regisitry function.
 		    typedef typename Notifier::ObserverBase Parent;
 		  private:
 		    typedef std::allocator<Value> Allocator;
 		  public:
 		    /// \brief Graph initialized map constructor.
 		    ///
 		    /// Graph initialized map constructor.
 		    explicit ArrayMap(const Graph& graph) {
 		      Parent::attach(graph.notifier(Item()));
 		      allocate_memory();
 		      Notifier* nf = Parent::notifier();
 		      Item it;
 		      for (nf->first(it); it != INVALID; nf->next(it)) {
 			int id = nf->id(it);;
 			allocator.construct(&(values[id]), Value());
+		      }
+		    }
 		    /// \brief Constructor to use default value to initialize the map.
 		    ///
 		    /// It constructs a map and initialize all of the the map.
 		    ArrayMap(const Graph& graph, const Value& value) {
 		      Parent::attach(graph.notifier(Item()));
 		      allocate_memory();
 		      Notifier* nf = Parent::notifier();
 		      Item it;
 		      for (nf->first(it); it != INVALID; nf->next(it)) {
 			int id = nf->id(it);;
 			allocator.construct(&(values[id]), value);
+		      }
+		    }
 		    /// \brief Constructor to copy a map of the same map type.
 		    ///
 		    /// Constructor to copy a map of the same map type.
 		    ArrayMap(const ArrayMap& copy) : Parent() {
 		      if (copy.attached()) {
 			attach(*copy.notifier());
+		      }
 		      capacity = copy.capacity;
 		      if (capacity == 0) return;
 		      values = allocator.allocate(capacity);
 		      Notifier* nf = Parent::notifier();
 		      Item it;
 		      for (nf->first(it); it != INVALID; nf->next(it)) {
 			int id = nf->id(it);;
 			allocator.construct(&(values[id]), copy.values[id]);
+		      }
+		    }
 		    /// \brief Assign operator.
 		    ///
 		    /// This operator assigns for each item in the map the
 		    /// value mapped to the same item in the copied map.
 		    /// The parameter map should be indiced with the same
 		    /// itemset because this assign operator does not change
 		    /// the container of the map.
 		    ArrayMap& operator=(const ArrayMap& cmap) {
 		      return operator=<ArrayMap>(cmap);
+		    }
 		    /// \brief Template assign operator.
 		    ///
 		    /// The given parameter should be conform to the ReadMap
 		    /// concecpt and could be indiced by the current item set of
 		    /// the NodeMap. In this case the value for each item
 		    /// is assigned by the value of the given ReadMap.
 		    template <typename CMap>
 		    ArrayMap& operator=(const CMap& cmap) {
 		      checkConcept<concepts::ReadMap<Key, _Value>, CMap>();
 		      const typename Parent::Notifier* nf = Parent::notifier();
 		      Item it;
 		      for (nf->first(it); it != INVALID; nf->next(it)) {
 		        set(it, cmap[it]);
+		      }
 		      return *this;
+		    }
 		    /// \brief The destructor of the map.
 		    ///
 		    /// The destructor of the map.
 		    virtual ~ArrayMap() {
 		      if (attached()) {
 			clear();
 			detach();
+		      }
+		    }
 		  protected:
 		    using Parent::attach;
 		    using Parent::detach;
 		    using Parent::attached;
 		  public:
 		    /// \brief The subscript operator.
 		    ///
 		    /// The subscript operator. The map can be subscripted by the
 		    /// actual keys of the graph.
 		    Value& operator[](const Key& key) {
 		      int id = Parent::notifier()->id(key);
 		      return values[id];
+		    }
 		    /// \brief The const subscript operator.
 		    ///
 		    /// The const subscript operator. The map can be subscripted by the
 		    /// actual keys of the graph.
 		    const Value& operator[](const Key& key) const {
 		      int id = Parent::notifier()->id(key);
 		      return values[id];
+		    }
 		    /// \brief Setter function of the map.
 		    ///
 		    /// Setter function of the map. Equivalent with map[key] = val.
 		    /// This is a compatibility feature with the not dereferable maps.
 		    void set(const Key& key, const Value& val) {
 		      (*this)[key] = val;
+		    }
 		  protected:
 		    /// \brief Adds a new key to the map.
 		    ///
 		    /// It adds a new key to the map. It called by the observer notifier
 		    /// and it overrides the add() member function of the observer base.
 		    virtual void add(const Key& key) {
 		      Notifier* nf = Parent::notifier();
 		      int id = nf->id(key);
 		      if (id >= capacity) {
 			int new_capacity = (capacity == 0 ? 1 : capacity);
 			while (new_capacity <= id) {
 			  new_capacity <<= 1;
+			}
 			Value* new_values = allocator.allocate(new_capacity);
 			Item it;
 			for (nf->first(it); it != INVALID; nf->next(it)) {
 			  int jd = nf->id(it);;
 			  if (id != jd) {
 			    allocator.construct(&(new_values[jd]), values[jd]);
 			    allocator.destroy(&(values[jd]));
+			  }
+			}
 			if (capacity != 0) allocator.deallocate(values, capacity);
 			values = new_values;
 			capacity = new_capacity;
+		      }
 		      allocator.construct(&(values[id]), Value());
+		    }
 		    /// \brief Adds more new keys to the map.
 		    ///
 		    /// It adds more new keys to the map. It called by the observer notifier
 		    /// and it overrides the add() member function of the observer base.
 		    virtual void add(const std::vector<Key>& keys) {
 		      Notifier* nf = Parent::notifier();
 		      int max_id = -1;
 		      for (int i = 0; i < int(keys.size()); ++i) {
 			int id = nf->id(keys[i]);
 			if (id > max_id) {
 			  max_id = id;
+			}
+		      }
 		      if (max_id >= capacity) {
 			int new_capacity = (capacity == 0 ? 1 : capacity);
 			while (new_capacity <= max_id) {
 			  new_capacity <<= 1;
+			}
 			Value* new_values = allocator.allocate(new_capacity);
 			Item it;
 			for (nf->first(it); it != INVALID; nf->next(it)) {
 			  int id = nf->id(it);
 			  bool found = false;
 			  for (int i = 0; i < int(keys.size()); ++i) {
 			    int jd = nf->id(keys[i]);
 			    if (id == jd) {
 			      found = true;
 			      break;
+			    }
+			  }
 			  if (found) continue;
 			  allocator.construct(&(new_values[id]), values[id]);
 			  allocator.destroy(&(values[id]));
+			}
 			if (capacity != 0) allocator.deallocate(values, capacity);
 			values = new_values;
 			capacity = new_capacity;
+		      }
 		      for (int i = 0; i < int(keys.size()); ++i) {
 			int id = nf->id(keys[i]);
 			allocator.construct(&(values[id]), Value());
+		      }
+		    }
 		    /// \brief Erase a key from the map.
 		    ///
 		    /// Erase a key from the map. It called by the observer notifier
 		    /// and it overrides the erase() member function of the observer base.
 		    virtual void erase(const Key& key) {
 		      int id = Parent::notifier()->id(key);
 		      allocator.destroy(&(values[id]));
+		    }
 		    /// \brief Erase more keys from the map.
 		    ///
 		    /// Erase more keys from the map. It called by the observer notifier
 		    /// and it overrides the erase() member function of the observer base.
 		    virtual void erase(const std::vector<Key>& keys) {
 		      for (int i = 0; i < int(keys.size()); ++i) {
 			int id = Parent::notifier()->id(keys[i]);
 			allocator.destroy(&(values[id]));
+		      }
+		    }
 		    /// \brief Buildes the map.
 		    ///
 		    /// It buildes the map. It called by the observer notifier
 		    /// and it overrides the build() member function of the observer base.
 		    virtual void build() {
 		      Notifier* nf = Parent::notifier();
 		      allocate_memory();
 		      Item it;
 		      for (nf->first(it); it != INVALID; nf->next(it)) {
 			int id = nf->id(it);;
 			allocator.construct(&(values[id]), Value());
+		      }
+		    }
 		    /// \brief Clear the map.
 		    ///
 		    /// It erase all items from the map. It called by the observer notifier
 		    /// and it overrides the clear() member function of the observer base.
 		    virtual void clear() {
 		      Notifier* nf = Parent::notifier();
 		      if (capacity != 0) {
 			Item it;
 			for (nf->first(it); it != INVALID; nf->next(it)) {
 			  int id = nf->id(it);
 			  allocator.destroy(&(values[id]));
+			}
 			allocator.deallocate(values, capacity);
 			capacity = 0;
+		      }
+		    }
 		  private:
 		    void allocate_memory() {
 		      int max_id = Parent::notifier()->maxId();
 		      if (max_id == -1) {
 			capacity = 0;
 			values = 0;
 			return;
+		      }
 		      capacity = 1;
 		      while (capacity <= max_id) {
 			capacity <<= 1;
+		      }
 		      values = allocator.allocate(capacity);
+		    }
 		    int capacity;
 		    Value* values;
 		    Allocator allocator;
 		  };
+		}
 		#endif

lemon/bits/base_extender.h

Show inline comments

 		/* -*- C++ -*-
+		 *
 		 * This file is a part of LEMON, a generic C++ optimization library
+		 *
 		 * Copyright (C) 2003-2007
 		 * Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport
 		 * (Egervary Research Group on Combinatorial Optimization, EGRES).
+		 *
 		 * Permission to use, modify and distribute this software is granted
 		 * provided that this copyright notice appears in all copies. For
 		 * precise terms see the accompanying LICENSE file.
+		 *
 		 * This software is provided "AS IS" with no warranty of any kind,
 		 * express or implied, and with no claim as to its suitability for any
 		 * purpose.
+		 *
 		 */
 		#ifndef LEMON_BITS_BASE_EXTENDER_H
 		#define LEMON_BITS_BASE_EXTENDER_H
 		#include <lemon/bits/invalid.h>
 		#include <lemon/error.h>
 		#include <lemon/bits/map_extender.h>
 		#include <lemon/bits/default_map.h>
 		#include <lemon/concept_check.h>
 		#include <lemon/concepts/maps.h>
 		///\ingroup digraphbits
 		///\file
 		///\brief Extenders for the digraph types
 		namespace lemon {
 		  /// \ingroup digraphbits
 		  ///
 		  /// \brief BaseDigraph to BaseGraph extender
 		  template <typename Base>
 		  class UndirDigraphExtender : public Base {
 		  public:
 		    typedef Base Parent;
 		    typedef typename Parent::Arc Edge;
 		    typedef typename Parent::Node Node;
 		    typedef True UndirectedTag;
 		    class Arc : public Edge {
 		      friend class UndirDigraphExtender;
 		    protected:
 		      bool forward;
 		      Arc(const Edge &ue, bool _forward) :
 		        Edge(ue), forward(_forward) {}
 		    public:
 		      Arc() {}
 		      /// Invalid arc constructor
 		      Arc(Invalid i) : Edge(i), forward(true) {}
 		      bool operator==(const Arc &that) const {
 			return forward==that.forward && Edge(*this)==Edge(that);
+		      }
 		      bool operator!=(const Arc &that) const {
 			return forward!=that.forward || Edge(*this)!=Edge(that);
+		      }
 		      bool operator<(const Arc &that) const {
 			return forward<that.forward ||
 			  (!(that.forward<forward) && Edge(*this)<Edge(that));
+		      }
 		    };
 		    using Parent::source;
 		    /// Source of the given Arc.
 		    Node source(const Arc &e) const {
 		      return e.forward ? Parent::source(e) : Parent::target(e);
+		    }
 		    using Parent::target;
 		    /// Target of the given Arc.
 		    Node target(const Arc &e) const {
 		      return e.forward ? Parent::target(e) : Parent::source(e);
+		    }
 		    /// \brief Directed arc from an edge.
 		    ///
 		    /// Returns a directed arc corresponding to the specified Edge.
 		    /// If the given bool is true the given edge and the
 		    /// returned arc have the same source node.
 		    static Arc direct(const Edge &ue, bool d) {
 		      return Arc(ue, d);
+		    }
 		    /// Returns whether the given directed arc is same orientation as the
 		    /// corresponding edge.
 		    ///
 		    /// \todo reference to the corresponding point of the undirected digraph
 		    /// concept. "What does the direction of an edge mean?"
 		    static bool direction(const Arc &e) { return e.forward; }
 		    using Parent::first;
 		    using Parent::next;
 		    void first(Arc &e) const {
 		      Parent::first(e);
 		      e.forward=true;
+		    }
 		    void next(Arc &e) const {
 		      if( e.forward ) {
 			e.forward = false;
+		      }
 		      else {
 			Parent::next(e);
 			e.forward = true;
+		      }
+		    }
 		    void firstOut(Arc &e, const Node &n) const {
 		      Parent::firstIn(e,n);
 		      if( Edge(e) != INVALID ) {
 			e.forward = false;
+		      }
 		      else {
 			Parent::firstOut(e,n);
 			e.forward = true;
+		      }
+		    }
 		    void nextOut(Arc &e) const {
 		      if( ! e.forward ) {
 			Node n = Parent::target(e);
 			Parent::nextIn(e);
 			if( Edge(e) == INVALID ) {
 			  Parent::firstOut(e, n);
 			  e.forward = true;
+			}
+		      }
 		      else {
 			Parent::nextOut(e);
+		      }
+		    }
 		    void firstIn(Arc &e, const Node &n) const {
 		      Parent::firstOut(e,n);
 		      if( Edge(e) != INVALID ) {
 			e.forward = false;
+		      }
 		      else {
 			Parent::firstIn(e,n);
 			e.forward = true;
+		      }
+		    }
 		    void nextIn(Arc &e) const {
 		      if( ! e.forward ) {
 			Node n = Parent::source(e);
 			Parent::nextOut(e);
 			if( Edge(e) == INVALID ) {
 			  Parent::firstIn(e, n);
 			  e.forward = true;
+			}
+		      }
 		      else {
 			Parent::nextIn(e);
+		      }
+		    }
 		    void firstInc(Edge &e, bool &d, const Node &n) const {
 		      d = true;
 		      Parent::firstOut(e, n);
 		      if (e != INVALID) return;
 		      d = false;
 		      Parent::firstIn(e, n);
+		    }
 		    void nextInc(Edge &e, bool &d) const {
 		      if (d) {
 			Node s = Parent::source(e);
 			Parent::nextOut(e);
 			if (e != INVALID) return;
 			d = false;
 			Parent::firstIn(e, s);
 		      } else {
 			Parent::nextIn(e);
+		      }
+		    }
 		    Node nodeFromId(int ix) const {
 		      return Parent::nodeFromId(ix);
+		    }
 		    Arc arcFromId(int ix) const {
 		      return direct(Parent::arcFromId(ix >> 1), bool(ix & 1));
+		    }
 		    Edge edgeFromId(int ix) const {
 		      return Parent::arcFromId(ix);
+		    }
 		    int id(const Node &n) const {
 		      return Parent::id(n);
+		    }
 		    int id(const Edge &e) const {
 		      return Parent::id(e);
+		    }
 		    int id(const Arc &e) const {
 		      return 2 * Parent::id(e) + int(e.forward);
+		    }
 		    int maxNodeId() const {
 		      return Parent::maxNodeId();
+		    }
 		    int maxArcId() const {
 		      return 2 * Parent::maxArcId() + 1;
+		    }
 		    int maxEdgeId() const {
 		      return Parent::maxArcId();
+		    }
 		    int arcNum() const {
 		      return 2 * Parent::arcNum();
+		    }
 		    int edgeNum() const {
 		      return Parent::arcNum();
+		    }
 		    Arc findArc(Node s, Node t, Arc p = INVALID) const {
 		      if (p == INVALID) {
 			Edge arc = Parent::findArc(s, t);
 			if (arc != INVALID) return direct(arc, true);
 			arc = Parent::findArc(t, s);
 			if (arc != INVALID) return direct(arc, false);
 		      } else if (direction(p)) {
 			Edge arc = Parent::findArc(s, t, p);
 			if (arc != INVALID) return direct(arc, true);
 			arc = Parent::findArc(t, s);
 			if (arc != INVALID) return direct(arc, false);
 		      } else {
 			Edge arc = Parent::findArc(t, s, p);
 			if (arc != INVALID) return direct(arc, false);
+		      }
 		      return INVALID;
+		    }
 		    Edge findEdge(Node s, Node t, Edge p = INVALID) const {
 		      if (s != t) {
 		        if (p == INVALID) {
 		          Edge arc = Parent::findArc(s, t);
 		          if (arc != INVALID) return arc;
 		          arc = Parent::findArc(t, s);
 		          if (arc != INVALID) return arc;
 		        } else if (Parent::s(p) == s) {
 		          Edge arc = Parent::findArc(s, t, p);
 		          if (arc != INVALID) return arc;
 		          arc = Parent::findArc(t, s);
 		          if (arc != INVALID) return arc;
 		        } else {
 		          Edge arc = Parent::findArc(t, s, p);
 		          if (arc != INVALID) return arc;
+		        }
 		      } else {
 		        return Parent::findArc(s, t, p);
+		      }
 		      return INVALID;
+		    }
 		  };
 		  template <typename Base>
 		  class BidirBpGraphExtender : public Base {
 		  public:
 		    typedef Base Parent;
 		    typedef BidirBpGraphExtender Digraph;
 		    typedef typename Parent::Node Node;
 		    typedef typename Parent::Edge Edge;
 		    using Parent::first;
 		    using Parent::next;
 		    using Parent::id;
 		    class Red : public Node {
 		      friend class BidirBpGraphExtender;
 		    public:
 		      Red() {}
 		      Red(const Node& node) : Node(node) {
 			LEMON_ASSERT(Parent::red(node) || node == INVALID,
 				     typename Parent::NodeSetError());
+		      }
 		      Red& operator=(const Node& node) {
 			LEMON_ASSERT(Parent::red(node) || node == INVALID,
 				     typename Parent::NodeSetError());
 		        Node::operator=(node);
 		        return *this;
+		      }
 		      Red(Invalid) : Node(INVALID) {}
 		      Red& operator=(Invalid) {
 		        Node::operator=(INVALID);
 		        return *this;
+		      }
 		    };
 		    void first(Red& node) const {
 		      Parent::firstRed(static_cast<Node&>(node));
+		    }
 		    void next(Red& node) const {
 		      Parent::nextRed(static_cast<Node&>(node));
+		    }
 		    int id(const Red& node) const {
 		      return Parent::redId(node);
+		    }
 		    class Blue : public Node {
 		      friend class BidirBpGraphExtender;
 		    public:
 		      Blue() {}
 		      Blue(const Node& node) : Node(node) {
 			LEMON_ASSERT(Parent::blue(node) || node == INVALID,
 				     typename Parent::NodeSetError());
+		      }
 		      Blue& operator=(const Node& node) {
 			LEMON_ASSERT(Parent::blue(node) || node == INVALID,
 				     typename Parent::NodeSetError());
 		        Node::operator=(node);
 		        return *this;
+		      }
 		      Blue(Invalid) : Node(INVALID) {}
 		      Blue& operator=(Invalid) {
 		        Node::operator=(INVALID);
 		        return *this;
+		      }
 		    };
 		    void first(Blue& node) const {
 		      Parent::firstBlue(static_cast<Node&>(node));
+		    }
 		    void next(Blue& node) const {
 		      Parent::nextBlue(static_cast<Node&>(node));
+		    }
 		    int id(const Blue& node) const {
 		      return Parent::redId(node);
+		    }
 		    Node source(const Edge& arc) const {
 		      return red(arc);
+		    }
 		    Node target(const Edge& arc) const {
 		      return blue(arc);
+		    }
 		    void firstInc(Edge& arc, bool& dir, const Node& node) const {
 		      if (Parent::red(node)) {
 			Parent::firstFromRed(arc, node);
 			dir = true;
 		      } else {
 			Parent::firstFromBlue(arc, node);
 			dir = static_cast<Edge&>(arc) == INVALID;
+		      }
+		    }
 		    void nextInc(Edge& arc, bool& dir) const {
 		      if (dir) {
 			Parent::nextFromRed(arc);
 		      } else {
 			Parent::nextFromBlue(arc);
 			if (arc == INVALID) dir = true;
+		      }
+		    }
 		    class Arc : public Edge {
 		      friend class BidirBpGraphExtender;
 		    protected:
 		      bool forward;
 		      Arc(const Edge& arc, bool _forward)
 			: Edge(arc), forward(_forward) {}
 		    public:
 		      Arc() {}
 		      Arc (Invalid) : Edge(INVALID), forward(true) {}
 		      bool operator==(const Arc& i) const {
 			return Edge::operator==(i) && forward == i.forward;
+		      }
 		      bool operator!=(const Arc& i) const {
 			return Edge::operator!=(i) || forward != i.forward;
+		      }
 		      bool operator<(const Arc& i) const {
 			return Edge::operator<(i) ||
 			  (!(i.forward<forward) && Edge(*this)<Edge(i));
+		      }
 		    };
 		    void first(Arc& arc) const {
 		      Parent::first(static_cast<Edge&>(arc));
 		      arc.forward = true;
+		    }
 		    void next(Arc& arc) const {
 		      if (!arc.forward) {
 			Parent::next(static_cast<Edge&>(arc));
+		      }
 		      arc.forward = !arc.forward;
+		    }
 		    void firstOut(Arc& arc, const Node& node) const {
 		      if (Parent::red(node)) {
 			Parent::firstFromRed(arc, node);
 			arc.forward = true;
 		      } else {
 			Parent::firstFromBlue(arc, node);
 			arc.forward = static_cast<Edge&>(arc) == INVALID;
+		      }
+		    }
 		    void nextOut(Arc& arc) const {
 		      if (arc.forward) {
 			Parent::nextFromRed(arc);
 		      } else {
 			Parent::nextFromBlue(arc);
 		        arc.forward = static_cast<Edge&>(arc) == INVALID;
+		      }
+		    }
 		    void firstIn(Arc& arc, const Node& node) const {
 		      if (Parent::blue(node)) {
 			Parent::firstFromBlue(arc, node);
 			arc.forward = true;
 		      } else {
 			Parent::firstFromRed(arc, node);
 			arc.forward = static_cast<Edge&>(arc) == INVALID;
+		      }
+		    }
 		    void nextIn(Arc& arc) const {
 		      if (arc.forward) {
 			Parent::nextFromBlue(arc);
 		      } else {
 			Parent::nextFromRed(arc);
 			arc.forward = static_cast<Edge&>(arc) == INVALID;
+		      }
+		    }
 		    Node source(const Arc& arc) const {
 		      return arc.forward ? Parent::red(arc) : Parent::blue(arc);
+		    }
 		    Node target(const Arc& arc) const {
 		      return arc.forward ? Parent::blue(arc) : Parent::red(arc);
+		    }
 		    int id(const Arc& arc) const {
 		      return (Parent::id(static_cast<const Edge&>(arc)) << 1) +
 		        (arc.forward ? 0 : 1);
+		    }
 		    Arc arcFromId(int ix) const {
 		      return Arc(Parent::fromEdgeId(ix >> 1), (ix & 1) == 0);
+		    }
 		    int maxArcId() const {
 		      return (Parent::maxEdgeId() << 1) + 1;
+		    }
 		    bool direction(const Arc& arc) const {
 		      return arc.forward;
+		    }
 		    Arc direct(const Edge& arc, bool dir) const {
 		      return Arc(arc, dir);
+		    }
 		    int arcNum() const {
 		      return 2 * Parent::edgeNum();
+		    }
 		    int edgeNum() const {
 		      return Parent::edgeNum();
+		    }
 		  };
+		}
 		#endif

lemon/bits/default_map.h

Show inline comments

 		/* -*- C++ -*-
+		 *
 		 * This file is a part of LEMON, a generic C++ optimization library
+		 *
 		 * Copyright (C) 2003-2007
 		 * Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport
 		 * (Egervary Research Group on Combinatorial Optimization, EGRES).
+		 *
 		 * Permission to use, modify and distribute this software is granted
 		 * provided that this copyright notice appears in all copies. For
 		 * precise terms see the accompanying LICENSE file.
+		 *
 		 * This software is provided "AS IS" with no warranty of any kind,
 		 * express or implied, and with no claim as to its suitability for any
 		 * purpose.
+		 *
 		 */
 		#ifndef LEMON_BITS_DEFAULT_MAP_H
 		#define LEMON_BITS_DEFAULT_MAP_H
 		#include <lemon/bits/array_map.h>
 		#include <lemon/bits/vector_map.h>
 		//#include <lemon/bits/debug_map.h>
 		///\ingroup graphbits
 		///\file
 		///\brief Graph maps that construct and destruct their elements dynamically.
 		namespace lemon {
 		  //#ifndef LEMON_USE_DEBUG_MAP
 		  template <typename _Graph, typename _Item, typename _Value>
 		  struct DefaultMapSelector {
 		    typedef ArrayMap<_Graph, _Item, _Value> Map;
 		  };
 		  // bool
 		  template <typename _Graph, typename _Item>
 		  struct DefaultMapSelector<_Graph, _Item, bool> {
 		    typedef VectorMap<_Graph, _Item, bool> Map;
 		  };
 		  // char
 		  template <typename _Graph, typename _Item>
 		  struct DefaultMapSelector<_Graph, _Item, char> {
 		    typedef VectorMap<_Graph, _Item, char> Map;
 		  };
 		  template <typename _Graph, typename _Item>
 		  struct DefaultMapSelector<_Graph, _Item, signed char> {
 		    typedef VectorMap<_Graph, _Item, signed char> Map;
 		  };
 		  template <typename _Graph, typename _Item>
 		  struct DefaultMapSelector<_Graph, _Item, unsigned char> {
 		    typedef VectorMap<_Graph, _Item, unsigned char> Map;
 		  };
 		  // int
 		  template <typename _Graph, typename _Item>
 		  struct DefaultMapSelector<_Graph, _Item, signed int> {
 		    typedef VectorMap<_Graph, _Item, signed int> Map;
 		  };
 		  template <typename _Graph, typename _Item>
 		  struct DefaultMapSelector<_Graph, _Item, unsigned int> {
 		    typedef VectorMap<_Graph, _Item, unsigned int> Map;
 		  };
 		  // short
 		  template <typename _Graph, typename _Item>
 		  struct DefaultMapSelector<_Graph, _Item, signed short> {
 		    typedef VectorMap<_Graph, _Item, signed short> Map;
 		  };
 		  template <typename _Graph, typename _Item>
 		  struct DefaultMapSelector<_Graph, _Item, unsigned short> {
 		    typedef VectorMap<_Graph, _Item, unsigned short> Map;
 		  };
 		  // long
 		  template <typename _Graph, typename _Item>
 		  struct DefaultMapSelector<_Graph, _Item, signed long> {
 		    typedef VectorMap<_Graph, _Item, signed long> Map;
 		  };
 		  template <typename _Graph, typename _Item>
 		  struct DefaultMapSelector<_Graph, _Item, unsigned long> {
 		    typedef VectorMap<_Graph, _Item, unsigned long> Map;
 		  };
 		#if defined __GNUC__ && !defined __STRICT_ANSI__
 		  // long long
 		  template <typename _Graph, typename _Item>
 		  struct DefaultMapSelector<_Graph, _Item, signed long long> {
 		    typedef VectorMap<_Graph, _Item, signed long long> Map;
 		  };
 		  template <typename _Graph, typename _Item>
 		  struct DefaultMapSelector<_Graph, _Item, unsigned long long> {
 		    typedef VectorMap<_Graph, _Item, unsigned long long> Map;
 		  };
 		#endif
 		  // float
 		  template <typename _Graph, typename _Item>
 		  struct DefaultMapSelector<_Graph, _Item, float> {
 		    typedef VectorMap<_Graph, _Item, float> Map;
 		  };
 		  // double
 		  template <typename _Graph, typename _Item>
 		  struct DefaultMapSelector<_Graph, _Item, double> {
 		    typedef VectorMap<_Graph, _Item,  double> Map;
 		  };
 		  // long double
 		  template <typename _Graph, typename _Item>
 		  struct DefaultMapSelector<_Graph, _Item, long double> {
 		    typedef VectorMap<_Graph, _Item, long double> Map;
 		  };
 		  // pointer
 		  template <typename _Graph, typename _Item, typename _Ptr>
 		  struct DefaultMapSelector<_Graph, _Item, _Ptr*> {
 		    typedef VectorMap<_Graph, _Item, _Ptr*> Map;
 		  };
 		// #else
 		//   template <typename _Graph, typename _Item, typename _Value>
 		//   struct DefaultMapSelector {
 		//     typedef DebugMap<_Graph, _Item, _Value> Map;
 		//   };
 		// #endif
 		  /// \e
 		  template <typename _Graph, typename _Item, typename _Value>
 		  class DefaultMap
 		    : public DefaultMapSelector<_Graph, _Item, _Value>::Map {
 		  public:
 		    typedef typename DefaultMapSelector<_Graph, _Item, _Value>::Map Parent;
 		    typedef DefaultMap<_Graph, _Item, _Value> Map;
 		    typedef typename Parent::Graph Graph;
 		    typedef typename Parent::Value Value;
 		    explicit DefaultMap(const Graph& graph) : Parent(graph) {}
 		    DefaultMap(const Graph& graph, const Value& value)
 		      : Parent(graph, value) {}
 		    DefaultMap& operator=(const DefaultMap& cmap) {
 		      return operator=<DefaultMap>(cmap);
+		    }
 		    template <typename CMap>
 		    DefaultMap& operator=(const CMap& cmap) {
 		      Parent::operator=(cmap);
 		      return *this;
+		    }
 		  };
+		}
 		#endif

lemon/bits/graph_extender.h

Show inline comments

 		/* -*- C++ -*-
+		 *
 		 * This file is a part of LEMON, a generic C++ optimization library
+		 *
 		 * Copyright (C) 2003-2007
 		 * Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport
 		 * (Egervary Research Group on Combinatorial Optimization, EGRES).
+		 *
 		 * Permission to use, modify and distribute this software is granted
 		 * provided that this copyright notice appears in all copies. For
 		 * precise terms see the accompanying LICENSE file.
+		 *
 		 * This software is provided "AS IS" with no warranty of any kind,
 		 * express or implied, and with no claim as to its suitability for any
 		 * purpose.
+		 *
 		 */
 		#ifndef LEMON_BITS_GRAPH_EXTENDER_H
 		#define LEMON_BITS_GRAPH_EXTENDER_H
 		#include <lemon/bits/invalid.h>
 		#include <lemon/bits/map_extender.h>
 		#include <lemon/bits/default_map.h>
 		#include <lemon/concept_check.h>
 		#include <lemon/concepts/maps.h>
 		///\ingroup graphbits
 		///\file
 		///\brief Extenders for the digraph types
 		namespace lemon {
 		  /// \ingroup graphbits
 		  ///
 		  /// \brief Extender for the Digraphs
 		  template <typename Base>
 		  class DigraphExtender : public Base {
 		  public:
 		    typedef Base Parent;
 		    typedef DigraphExtender Digraph;
 		    // Base extensions
 		    typedef typename Parent::Node Node;
 		    typedef typename Parent::Arc Arc;
 		    int maxId(Node) const {
 		      return Parent::maxNodeId();
+		    }
 		    int maxId(Arc) const {
 		      return Parent::maxArcId();
+		    }
 		    Node fromId(int id, Node) const {
 		      return Parent::nodeFromId(id);
+		    }
 		    Arc fromId(int id, Arc) const {
 		      return Parent::arcFromId(id);
+		    }
 		    Node oppositeNode(const Node &n, const Arc &e) const {
 		      if (n == Parent::source(e))
 			return Parent::target(e);
 		      else if(n==Parent::target(e))
 			return Parent::source(e);
 		      else
 			return INVALID;
+		    }
 		    // Alterable extension
 		    typedef AlterationNotifier<DigraphExtender, Node> NodeNotifier;
 		    typedef AlterationNotifier<DigraphExtender, Arc> ArcNotifier;
 		  protected:
 		    mutable NodeNotifier node_notifier;
 		    mutable ArcNotifier arc_notifier;
 		  public:
 		    NodeNotifier& notifier(Node) const {
 		      return node_notifier;
+		    }
 		    ArcNotifier& notifier(Arc) const {
 		      return arc_notifier;
+		    }
 		    class NodeIt : public Node {
 		      const Digraph* digraph;
 		    public:
 		      NodeIt() {}
 		      NodeIt(Invalid i) : Node(i) { }
 		      explicit NodeIt(const Digraph& _digraph) : digraph(&_digraph) {
 			_digraph.first(static_cast<Node&>(*this));
+		      }
 		      NodeIt(const Digraph& _digraph, const Node& node)
 			: Node(node), digraph(&_digraph) {}
 		      NodeIt& operator++() {
 			digraph->next(*this);
 			return *this;
+		      }
 		    };
 		    class ArcIt : public Arc {
 		      const Digraph* digraph;
 		    public:
 		      ArcIt() { }
 		      ArcIt(Invalid i) : Arc(i) { }
 		      explicit ArcIt(const Digraph& _digraph) : digraph(&_digraph) {
 			_digraph.first(static_cast<Arc&>(*this));
+		      }
 		      ArcIt(const Digraph& _digraph, const Arc& e) :
 			Arc(e), digraph(&_digraph) { }
 		      ArcIt& operator++() {
 			digraph->next(*this);
 			return *this;
+		      }
 		    };
 		    class OutArcIt : public Arc {
 		      const Digraph* digraph;
 		    public:
 		      OutArcIt() { }
 		      OutArcIt(Invalid i) : Arc(i) { }
 		      OutArcIt(const Digraph& _digraph, const Node& node)
 			: digraph(&_digraph) {
 			_digraph.firstOut(*this, node);
+		      }
 		      OutArcIt(const Digraph& _digraph, const Arc& arc)
 			: Arc(arc), digraph(&_digraph) {}
 		      OutArcIt& operator++() {
 			digraph->nextOut(*this);
 			return *this;
+		      }
 		    };
 		    class InArcIt : public Arc {
 		      const Digraph* digraph;
 		    public:
 		      InArcIt() { }
 		      InArcIt(Invalid i) : Arc(i) { }
 		      InArcIt(const Digraph& _digraph, const Node& node)
 			: digraph(&_digraph) {
 			_digraph.firstIn(*this, node);
+		      }
 		      InArcIt(const Digraph& _digraph, const Arc& arc) :
 			Arc(arc), digraph(&_digraph) {}
 		      InArcIt& operator++() {
 			digraph->nextIn(*this);
 			return *this;
+		      }
 		    };
 		    /// \brief Base node of the iterator
 		    ///
 		    /// Returns the base node (i.e. the source in this case) of the iterator
 		    Node baseNode(const OutArcIt &e) const {
 		      return Parent::source(e);
+		    }
 		    /// \brief Running node of the iterator
 		    ///
 		    /// Returns the running node (i.e. the target in this case) of the
 		    /// iterator
 		    Node runningNode(const OutArcIt &e) const {
 		      return Parent::target(e);
+		    }
 		    /// \brief Base node of the iterator
 		    ///
 		    /// Returns the base node (i.e. the target in this case) of the iterator
 		    Node baseNode(const InArcIt &e) const {
 		      return Parent::target(e);
+		    }
 		    /// \brief Running node of the iterator
 		    ///
 		    /// Returns the running node (i.e. the source in this case) of the
 		    /// iterator
 		    Node runningNode(const InArcIt &e) const {
 		      return Parent::source(e);
+		    }
 		    template <typename _Value>
 		    class NodeMap
 		      : public MapExtender<DefaultMap<Digraph, Node, _Value> > {
 		    public:
 		      typedef DigraphExtender Digraph;
 		      typedef MapExtender<DefaultMap<Digraph, Node, _Value> > Parent;
 		      explicit NodeMap(const Digraph& digraph)
 			: Parent(digraph) {}
 		      NodeMap(const Digraph& digraph, const _Value& value)
 			: Parent(digraph, value) {}
 		      NodeMap& operator=(const NodeMap& cmap) {
 			return operator=<NodeMap>(cmap);
+		      }
 		      template <typename CMap>
 		      NodeMap& operator=(const CMap& cmap) {
 		        Parent::operator=(cmap);
 			return *this;
+		      }
 		    };
 		    template <typename _Value>
 		    class ArcMap
 		      : public MapExtender<DefaultMap<Digraph, Arc, _Value> > {
 		    public:
 		      typedef DigraphExtender Digraph;
 		      typedef MapExtender<DefaultMap<Digraph, Arc, _Value> > Parent;
 		      explicit ArcMap(const Digraph& digraph)
 			: Parent(digraph) {}
 		      ArcMap(const Digraph& digraph, const _Value& value)
 			: Parent(digraph, value) {}
 		      ArcMap& operator=(const ArcMap& cmap) {
 			return operator=<ArcMap>(cmap);
+		      }
 		      template <typename CMap>
 		      ArcMap& operator=(const CMap& cmap) {
 		        Parent::operator=(cmap);
 			return *this;
+		      }
 		    };
 		    Node addNode() {
 		      Node node = Parent::addNode();
 		      notifier(Node()).add(node);
 		      return node;
+		    }
 		    Arc addArc(const Node& from, const Node& to) {
 		      Arc arc = Parent::addArc(from, to);
 		      notifier(Arc()).add(arc);
 		      return arc;
+		    }
 		    void clear() {
 		      notifier(Arc()).clear();
 		      notifier(Node()).clear();
 		      Parent::clear();
+		    }
 		    template <typename Digraph, typename NodeRefMap, typename ArcRefMap>
 		    void build(const Digraph& digraph, NodeRefMap& nodeRef, ArcRefMap& arcRef) {
 		      Parent::build(digraph, nodeRef, arcRef);
 		      notifier(Node()).build();
 		      notifier(Arc()).build();
+		    }
 		    void erase(const Node& node) {
 		      Arc arc;
 		      Parent::firstOut(arc, node);
 		      while (arc != INVALID ) {
 			erase(arc);
 			Parent::firstOut(arc, node);
+		      }
 		      Parent::firstIn(arc, node);
 		      while (arc != INVALID ) {
 			erase(arc);
 			Parent::firstIn(arc, node);
+		      }
 		      notifier(Node()).erase(node);
 		      Parent::erase(node);
+		    }
 		    void erase(const Arc& arc) {
 		      notifier(Arc()).erase(arc);
 		      Parent::erase(arc);
+		    }
 		    DigraphExtender() {
 		      node_notifier.setContainer(*this);
 		      arc_notifier.setContainer(*this);
+		    }
 		    ~DigraphExtender() {
 		      arc_notifier.clear();
 		      node_notifier.clear();
+		    }
 		  };
 		  /// \ingroup graphbits
 		  ///
 		  /// \brief Extender for the Graphs
 		  template <typename Base>
 		  class GraphExtender : public Base {
 		  public:
 		    typedef Base Parent;
 		    typedef GraphExtender Digraph;
 		    typedef typename Parent::Node Node;
 		    typedef typename Parent::Arc Arc;
 		    typedef typename Parent::Edge Edge;
 		    // Graph extension
 		    int maxId(Node) const {
 		      return Parent::maxNodeId();
+		    }
 		    int maxId(Arc) const {
 		      return Parent::maxArcId();
+		    }
 		    int maxId(Edge) const {
 		      return Parent::maxEdgeId();
+		    }
 		    Node fromId(int id, Node) const {
 		      return Parent::nodeFromId(id);
+		    }
 		    Arc fromId(int id, Arc) const {
 		      return Parent::arcFromId(id);
+		    }
 		    Edge fromId(int id, Edge) const {
 		      return Parent::edgeFromId(id);
+		    }
 		    Node oppositeNode(const Node &n, const Edge &e) const {
 		      if( n == Parent::source(e))
 			return Parent::target(e);
 		      else if( n == Parent::target(e))
 			return Parent::source(e);
 		      else
 			return INVALID;
+		    }
 		    Arc oppositeArc(const Arc &e) const {
 		      return Parent::direct(e, !Parent::direction(e));
+		    }
 		    using Parent::direct;
 		    Arc direct(const Edge &ue, const Node &s) const {
 		      return Parent::direct(ue, Parent::source(ue) == s);
+		    }
 		    // Alterable extension
 		    typedef AlterationNotifier<GraphExtender, Node> NodeNotifier;
 		    typedef AlterationNotifier<GraphExtender, Arc> ArcNotifier;
 		    typedef AlterationNotifier<GraphExtender, Edge> EdgeNotifier;
 		  protected:
 		    mutable NodeNotifier node_notifier;
 		    mutable ArcNotifier arc_notifier;
 		    mutable EdgeNotifier edge_notifier;
 		  public:
 		    NodeNotifier& notifier(Node) const {
 		      return node_notifier;
+		    }
 		    ArcNotifier& notifier(Arc) const {
 		      return arc_notifier;
+		    }
 		    EdgeNotifier& notifier(Edge) const {
 		      return edge_notifier;
+		    }
 		    class NodeIt : public Node {
 		      const Digraph* digraph;
 		    public:
 		      NodeIt() {}
 		      NodeIt(Invalid i) : Node(i) { }
 		      explicit NodeIt(const Digraph& _digraph) : digraph(&_digraph) {
 			_digraph.first(static_cast<Node&>(*this));
+		      }
 		      NodeIt(const Digraph& _digraph, const Node& node)
 			: Node(node), digraph(&_digraph) {}
 		      NodeIt& operator++() {
 			digraph->next(*this);
 			return *this;
+		      }
 		    };
 		    class ArcIt : public Arc {
 		      const Digraph* digraph;
 		    public:
 		      ArcIt() { }
 		      ArcIt(Invalid i) : Arc(i) { }
 		      explicit ArcIt(const Digraph& _digraph) : digraph(&_digraph) {
 			_digraph.first(static_cast<Arc&>(*this));
+		      }
 		      ArcIt(const Digraph& _digraph, const Arc& e) :
 			Arc(e), digraph(&_digraph) { }
 		      ArcIt& operator++() {
 			digraph->next(*this);
 			return *this;
+		      }
 		    };
 		    class OutArcIt : public Arc {
 		      const Digraph* digraph;
 		    public:
 		      OutArcIt() { }
 		      OutArcIt(Invalid i) : Arc(i) { }
 		      OutArcIt(const Digraph& _digraph, const Node& node)
 			: digraph(&_digraph) {
 			_digraph.firstOut(*this, node);
+		      }
 		      OutArcIt(const Digraph& _digraph, const Arc& arc)
 			: Arc(arc), digraph(&_digraph) {}
 		      OutArcIt& operator++() {
 			digraph->nextOut(*this);
 			return *this;
+		      }
 		    };
 		    class InArcIt : public Arc {
 		      const Digraph* digraph;
 		    public:
 		      InArcIt() { }
 		      InArcIt(Invalid i) : Arc(i) { }
 		      InArcIt(const Digraph& _digraph, const Node& node)
 			: digraph(&_digraph) {
 			_digraph.firstIn(*this, node);
+		      }
 		      InArcIt(const Digraph& _digraph, const Arc& arc) :
 			Arc(arc), digraph(&_digraph) {}
 		      InArcIt& operator++() {
 			digraph->nextIn(*this);
 			return *this;
+		      }
 		    };
 		    class EdgeIt : public Parent::Edge {
 		      const Digraph* digraph;
 		    public:
 		      EdgeIt() { }
 		      EdgeIt(Invalid i) : Edge(i) { }
 		      explicit EdgeIt(const Digraph& _digraph) : digraph(&_digraph) {
 			_digraph.first(static_cast<Edge&>(*this));
+		      }
 		      EdgeIt(const Digraph& _digraph, const Edge& e) :
 			Edge(e), digraph(&_digraph) { }
 		      EdgeIt& operator++() {
 			digraph->next(*this);
 			return *this;
+		      }
 		    };
 		    class IncArcIt : public Parent::Edge {
 		      friend class GraphExtender;
 		      const Digraph* digraph;
 		      bool direction;
 		    public:
 		      IncArcIt() { }
 		      IncArcIt(Invalid i) : Edge(i), direction(false) { }
 		      IncArcIt(const Digraph& _digraph, const Node &n) : digraph(&_digraph) {
 			_digraph.firstInc(*this, direction, n);
+		      }
 		      IncArcIt(const Digraph& _digraph, const Edge &ue, const Node &n)
 			: digraph(&_digraph), Edge(ue) {
 			direction = (_digraph.source(ue) == n);
+		      }
 		      IncArcIt& operator++() {
 			digraph->nextInc(*this, direction);
 			return *this;
+		      }
 		    };
 		    /// \brief Base node of the iterator
 		    ///
 		    /// Returns the base node (ie. the source in this case) of the iterator
 		    Node baseNode(const OutArcIt &e) const {
 		      return Parent::source(static_cast<const Arc&>(e));
+		    }
 		    /// \brief Running node of the iterator
 		    ///
 		    /// Returns the running node (ie. the target in this case) of the
 		    /// iterator
 		    Node runningNode(const OutArcIt &e) const {
 		      return Parent::target(static_cast<const Arc&>(e));
+		    }
 		    /// \brief Base node of the iterator
 		    ///
 		    /// Returns the base node (ie. the target in this case) of the iterator
 		    Node baseNode(const InArcIt &e) const {
 		      return Parent::target(static_cast<const Arc&>(e));
+		    }
 		    /// \brief Running node of the iterator
 		    ///
 		    /// Returns the running node (ie. the source in this case) of the
 		    /// iterator
 		    Node runningNode(const InArcIt &e) const {
 		      return Parent::source(static_cast<const Arc&>(e));
+		    }
 		    /// Base node of the iterator
 		    ///
 		    /// Returns the base node of the iterator
 		    Node baseNode(const IncArcIt &e) const {
 		      return e.direction ? source(e) : target(e);
+		    }
 		    /// Running node of the iterator
 		    ///
 		    /// Returns the running node of the iterator
 		    Node runningNode(const IncArcIt &e) const {
 		      return e.direction ? target(e) : source(e);
+		    }
 		    // Mappable extension
 		    template <typename _Value>
 		    class NodeMap
 		      : public MapExtender<DefaultMap<Digraph, Node, _Value> > {
 		    public:
 		      typedef GraphExtender Digraph;
 		      typedef MapExtender<DefaultMap<Digraph, Node, _Value> > Parent;
 		      NodeMap(const Digraph& digraph)
 			: Parent(digraph) {}
 		      NodeMap(const Digraph& digraph, const _Value& value)
 			: Parent(digraph, value) {}
 		      NodeMap& operator=(const NodeMap& cmap) {
 			return operator=<NodeMap>(cmap);
+		      }
 		      template <typename CMap>
 		      NodeMap& operator=(const CMap& cmap) {
 		        Parent::operator=(cmap);
 			return *this;
+		      }
 		    };
 		    template <typename _Value>
 		    class ArcMap
 		      : public MapExtender<DefaultMap<Digraph, Arc, _Value> > {
 		    public:
 		      typedef GraphExtender Digraph;
 		      typedef MapExtender<DefaultMap<Digraph, Arc, _Value> > Parent;
 		      ArcMap(const Digraph& digraph)
 			: Parent(digraph) {}
 		      ArcMap(const Digraph& digraph, const _Value& value)
 			: Parent(digraph, value) {}
 		      ArcMap& operator=(const ArcMap& cmap) {
 			return operator=<ArcMap>(cmap);
+		      }
 		      template <typename CMap>
 		      ArcMap& operator=(const CMap& cmap) {
 		        Parent::operator=(cmap);
 			return *this;
+		      }
 		    };
 		    template <typename _Value>
 		    class EdgeMap
 		      : public MapExtender<DefaultMap<Digraph, Edge, _Value> > {
 		    public:
 		      typedef GraphExtender Digraph;
 		      typedef MapExtender<DefaultMap<Digraph, Edge, _Value> > Parent;
 		      EdgeMap(const Digraph& digraph)
 			: Parent(digraph) {}
 		      EdgeMap(const Digraph& digraph, const _Value& value)
 			: Parent(digraph, value) {}
 		      EdgeMap& operator=(const EdgeMap& cmap) {
 			return operator=<EdgeMap>(cmap);
+		      }
 		      template <typename CMap>
 		      EdgeMap& operator=(const CMap& cmap) {
 		        Parent::operator=(cmap);
 			return *this;
+		      }
 		    };
 		    // Alteration extension
 		    Node addNode() {
 		      Node node = Parent::addNode();
 		      notifier(Node()).add(node);
 		      return node;
+		    }
 		    Edge addEdge(const Node& from, const Node& to) {
 		      Edge edge = Parent::addEdge(from, to);
 		      notifier(Edge()).add(edge);
 		      std::vector<Arc> ev;
 		      ev.push_back(Parent::direct(edge, true));
 		      ev.push_back(Parent::direct(edge, false));
 		      notifier(Arc()).add(ev);
 		      return edge;
+		    }
 		    void clear() {
 		      notifier(Arc()).clear();
 		      notifier(Edge()).clear();
 		      notifier(Node()).clear();
 		      Parent::clear();
+		    }
 		    template <typename Digraph, typename NodeRefMap, typename EdgeRefMap>
 		    void build(const Digraph& digraph, NodeRefMap& nodeRef,
 		               EdgeRefMap& edgeRef) {
 		      Parent::build(digraph, nodeRef, edgeRef);
 		      notifier(Node()).build();
 		      notifier(Edge()).build();
 		      notifier(Arc()).build();
+		    }
 		    void erase(const Node& node) {
 		      Arc arc;
 		      Parent::firstOut(arc, node);
 		      while (arc != INVALID ) {
 			erase(arc);
 			Parent::firstOut(arc, node);
+		      }
 		      Parent::firstIn(arc, node);
 		      while (arc != INVALID ) {
 			erase(arc);
 			Parent::firstIn(arc, node);
+		      }
 		      notifier(Node()).erase(node);
 		      Parent::erase(node);
+		    }
 		    void erase(const Edge& edge) {
 		      std::vector<Arc> ev;
 		      ev.push_back(Parent::direct(edge, true));
 		      ev.push_back(Parent::direct(edge, false));
 		      notifier(Arc()).erase(ev);
 		      notifier(Edge()).erase(edge);
 		      Parent::erase(edge);
+		    }
 		    GraphExtender() {
 		      node_notifier.setContainer(*this);
 		      arc_notifier.setContainer(*this);
 		      edge_notifier.setContainer(*this);
+		    }
 		    ~GraphExtender() {
 		      edge_notifier.clear();
 		      arc_notifier.clear();
 		      node_notifier.clear();
+		    }
 		  };
+		}
 		#endif

lemon/bits/map_extender.h

Show inline comments

 		/* -*- C++ -*-
+		 *
 		 * This file is a part of LEMON, a generic C++ optimization library
+		 *
 		 * Copyright (C) 2003-2007
 		 * Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport
 		 * (Egervary Research Group on Combinatorial Optimization, EGRES).
+		 *
 		 * Permission to use, modify and distribute this software is granted
 		 * provided that this copyright notice appears in all copies. For
 		 * precise terms see the accompanying LICENSE file.
+		 *
 		 * This software is provided "AS IS" with no warranty of any kind,
 		 * express or implied, and with no claim as to its suitability for any
 		 * purpose.
+		 *
 		 */
 		#ifndef LEMON_BITS_MAP_EXTENDER_H
 		#define LEMON_BITS_MAP_EXTENDER_H
 		#include <iterator>
 		#include <lemon/bits/traits.h>
 		#include <lemon/concept_check.h>
 		#include <lemon/concepts/maps.h>
 		///\file
 		///\brief Extenders for iterable maps.
 		namespace lemon {
 		  /// \ingroup graphbits
 		  ///
 		  /// \brief Extender for maps
 		  template <typename _Map>
 		  class MapExtender : public _Map {
 		  public:
 		    typedef _Map Parent;
 		    typedef MapExtender Map;
 		    typedef typename Parent::Graph Graph;
 		    typedef typename Parent::Key Item;
 		    typedef typename Parent::Key Key;
 		    typedef typename Parent::Value Value;
 		    class MapIt;
 		    class ConstMapIt;
 		    friend class MapIt;
 		    friend class ConstMapIt;
 		  public:
 		    MapExtender(const Graph& graph)
 		      : Parent(graph) {}
 		    MapExtender(const Graph& graph, const Value& value)
 		      : Parent(graph, value) {}
 		    MapExtender& operator=(const MapExtender& cmap) {
 		      return operator=<MapExtender>(cmap);
+		    }
 		    template <typename CMap>
 		    MapExtender& operator=(const CMap& cmap) {
 		      Parent::operator=(cmap);
 		      return *this;
+		    }
 		    class MapIt : public Item {
 		    public:
 		      typedef Item Parent;
 		      typedef typename Map::Value Value;
 		      MapIt() {}
 		      MapIt(Invalid i) : Parent(i) { }
 		      explicit MapIt(Map& _map) : map(_map) {
 		        map.notifier()->first(*this);
+		      }
 		      MapIt(const Map& _map, const Item& item)
 			: Parent(item), map(_map) {}
 		      MapIt& operator++() {
 			map.notifier()->next(*this);
 			return *this;
+		      }
 		      typename MapTraits<Map>::ConstReturnValue operator*() const {
 			return map[*this];
+		      }
 		      typename MapTraits<Map>::ReturnValue operator*() {
 			return map[*this];
+		      }
 		      void set(const Value& value) {
 			map.set(*this, value);
+		      }
 		    protected:
 		      Map& map;
 		    };
 		    class ConstMapIt : public Item {
 		    public:
 		      typedef Item Parent;
 		      typedef typename Map::Value Value;
 		      ConstMapIt() {}
 		      ConstMapIt(Invalid i) : Parent(i) { }
 		      explicit ConstMapIt(Map& _map) : map(_map) {
 		        map.notifier()->first(*this);
+		      }
 		      ConstMapIt(const Map& _map, const Item& item)
 			: Parent(item), map(_map) {}
 		      ConstMapIt& operator++() {
 			map.notifier()->next(*this);
 			return *this;
+		      }
 		      typename MapTraits<Map>::ConstReturnValue operator*() const {
 			return map[*this];
+		      }
 		    protected:
 		      const Map& map;
 		    };
 		    class ItemIt : public Item {
 		    public:
 		      typedef Item Parent;
 		      ItemIt() {}
 		      ItemIt(Invalid i) : Parent(i) { }
 		      explicit ItemIt(Map& _map) : map(_map) {
 		        map.notifier()->first(*this);
+		      }
 		      ItemIt(const Map& _map, const Item& item)
 			: Parent(item), map(_map) {}
 		      ItemIt& operator++() {
 			map.notifier()->next(*this);
 			return *this;
+		      }
 		    protected:
 		      const Map& map;
 		    };
 		  };
 		  /// \ingroup graphbits
 		  ///
 		  /// \brief Extender for maps which use a subset of the items.
 		  template <typename _Graph, typename _Map>
 		  class SubMapExtender : public _Map {
 		  public:
 		    typedef _Map Parent;
 		    typedef SubMapExtender Map;
 		    typedef _Graph Graph;
 		    typedef typename Parent::Key Item;
 		    typedef typename Parent::Key Key;
 		    typedef typename Parent::Value Value;
 		    class MapIt;
 		    class ConstMapIt;
 		    friend class MapIt;
 		    friend class ConstMapIt;
 		  public:
 		    SubMapExtender(const Graph& _graph)
 		      : Parent(_graph), graph(_graph) {}
 		    SubMapExtender(const Graph& _graph, const Value& _value)
 		      : Parent(_graph, _value), graph(_graph) {}
 		    SubMapExtender& operator=(const SubMapExtender& cmap) {
 		      return operator=<MapExtender>(cmap);
+		    }
 		    template <typename CMap>
 		    SubMapExtender& operator=(const CMap& cmap) {
 		      checkConcept<concepts::ReadMap<Key, Value>, CMap>();
 		      Item it;
 		      for (graph.first(it); it != INVALID; graph.next(it)) {
 		        Parent::set(it, cmap[it]);
+		      }
 		      return *this;
+		    }
 		    class MapIt : public Item {
 		    public:
 		      typedef Item Parent;
 		      typedef typename Map::Value Value;
 		      MapIt() {}
 		      MapIt(Invalid i) : Parent(i) { }
 		      explicit MapIt(Map& _map) : map(_map) {
 		        map.graph.first(*this);
+		      }
 		      MapIt(const Map& _map, const Item& item)
 			: Parent(item), map(_map) {}
 		      MapIt& operator++() {
 			map.graph.next(*this);
 			return *this;
+		      }
 		      typename MapTraits<Map>::ConstReturnValue operator*() const {
 			return map[*this];
+		      }
 		      typename MapTraits<Map>::ReturnValue operator*() {
 			return map[*this];
+		      }
 		      void set(const Value& value) {
 			map.set(*this, value);
+		      }
 		    protected:
 		      Map& map;
 		    };
 		    class ConstMapIt : public Item {
 		    public:
 		      typedef Item Parent;
 		      typedef typename Map::Value Value;
 		      ConstMapIt() {}
 		      ConstMapIt(Invalid i) : Parent(i) { }
 		      explicit ConstMapIt(Map& _map) : map(_map) {
 		        map.graph.first(*this);
+		      }
 		      ConstMapIt(const Map& _map, const Item& item)
 			: Parent(item), map(_map) {}
 		      ConstMapIt& operator++() {
 			map.graph.next(*this);
 			return *this;
+		      }
 		      typename MapTraits<Map>::ConstReturnValue operator*() const {
 			return map[*this];
+		      }
 		    protected:
 		      const Map& map;
 		    };
 		    class ItemIt : public Item {
 		    public:
 		      typedef Item Parent;
 		      ItemIt() {}
 		      ItemIt(Invalid i) : Parent(i) { }
 		      explicit ItemIt(Map& _map) : map(_map) {
 		        map.graph.first(*this);
+		      }
 		      ItemIt(const Map& _map, const Item& item)
 			: Parent(item), map(_map) {}
 		      ItemIt& operator++() {
 			map.graph.next(*this);
 			return *this;
+		      }
 		    protected:
 		      const Map& map;
 		    };
 		  private:
 		    const Graph& graph;
 		  };
+		}
 		#endif

lemon/bits/traits.h

Show inline comments

 		/* -*- C++ -*-
+		 *
 		 * This file is a part of LEMON, a generic C++ optimization library
+		 *
 		 * Copyright (C) 2003-2007
 		 * Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport
 		 * (Egervary Research Group on Combinatorial Optimization, EGRES).
+		 *
 		 * Permission to use, modify and distribute this software is granted
 		 * provided that this copyright notice appears in all copies. For
 		 * precise terms see the accompanying LICENSE file.
+		 *
 		 * This software is provided "AS IS" with no warranty of any kind,
 		 * express or implied, and with no claim as to its suitability for any
 		 * purpose.
+		 *
 		 */
 		#ifndef LEMON_BITS_TRAITS_H
 		#define LEMON_BITS_TRAITS_H
 		#include <lemon/bits/utility.h>
 		///\file
 		///\brief Traits for graphs and maps
 		///
 		namespace lemon {
 		  template <typename _Graph, typename _Item>
 		  class ItemSetTraits {};
 		  template <typename Graph, typename Enable = void>
 		  struct NodeNotifierIndicator {
 		    typedef InvalidType Type;
 		  };
 		  template <typename Graph>
 		  struct NodeNotifierIndicator<
 		    Graph,
 		    typename enable_if<typename Graph::NodeNotifier::Notifier, void>::type
 		  > {
 		    typedef typename Graph::NodeNotifier Type;
 		  };
 		  template <typename _Graph>
 		  class ItemSetTraits<_Graph, typename _Graph::Node> {
 		  public:
 		    typedef _Graph Graph;
 		    typedef typename Graph::Node Item;
 		    typedef typename Graph::NodeIt ItemIt;
 		    typedef typename NodeNotifierIndicator<Graph>::Type ItemNotifier;
 		    template <typename _Value>
 		    class Map : public Graph::template NodeMap<_Value> {
 		    public:
 		      typedef typename Graph::template NodeMap<_Value> Parent;
 		      typedef typename Graph::template NodeMap<_Value> Type;
 		      typedef typename Parent::Value Value;
 		      Map(const Graph& _digraph) : Parent(_digraph) {}
 		      Map(const Graph& _digraph, const Value& _value)
 			: Parent(_digraph, _value) {}
 		     };
 		  };
 		  template <typename Graph, typename Enable = void>
 		  struct ArcNotifierIndicator {
 		    typedef InvalidType Type;
 		  };
 		  template <typename Graph>
 		  struct ArcNotifierIndicator<
 		    Graph,
 		    typename enable_if<typename Graph::ArcNotifier::Notifier, void>::type
 		  > {
 		    typedef typename Graph::ArcNotifier Type;
 		  };
 		  template <typename _Graph>
 		  class ItemSetTraits<_Graph, typename _Graph::Arc> {
 		  public:
 		    typedef _Graph Graph;
 		    typedef typename Graph::Arc Item;
 		    typedef typename Graph::ArcIt ItemIt;
 		    typedef typename ArcNotifierIndicator<Graph>::Type ItemNotifier;
 		    template <typename _Value>
 		    class Map : public Graph::template ArcMap<_Value> {
 		    public:
 		      typedef typename Graph::template ArcMap<_Value> Parent;
 		      typedef typename Graph::template ArcMap<_Value> Type;
 		      typedef typename Parent::Value Value;
 		      Map(const Graph& _digraph) : Parent(_digraph) {}
 		      Map(const Graph& _digraph, const Value& _value)
 			: Parent(_digraph, _value) {}
 		    };
 		  };
 		  template <typename Graph, typename Enable = void>
 		  struct EdgeNotifierIndicator {
 		    typedef InvalidType Type;
 		  };
 		  template <typename Graph>
 		  struct EdgeNotifierIndicator<
 		    Graph,
 		    typename enable_if<typename Graph::EdgeNotifier::Notifier, void>::type
 		  > {
 		    typedef typename Graph::EdgeNotifier Type;
 		  };
 		  template <typename _Graph>
 		  class ItemSetTraits<_Graph, typename _Graph::Edge> {
 		  public:
 		    typedef _Graph Graph;
 		    typedef typename Graph::Edge Item;
 		    typedef typename Graph::EdgeIt ItemIt;
 		    typedef typename EdgeNotifierIndicator<Graph>::Type ItemNotifier;
 		    template <typename _Value>
 		    class Map : public Graph::template EdgeMap<_Value> {
 		    public:
 		      typedef typename Graph::template EdgeMap<_Value> Parent;
 		      typedef typename Graph::template EdgeMap<_Value> Type;
 		      typedef typename Parent::Value Value;
 		      Map(const Graph& _digraph) : Parent(_digraph) {}
 		      Map(const Graph& _digraph, const Value& _value)
 			: Parent(_digraph, _value) {}
 		    };
 		  };
 		  template <typename Map, typename Enable = void>
 		  struct MapTraits {
 		    typedef False ReferenceMapTag;
 		    typedef typename Map::Key Key;
 		    typedef typename Map::Value Value;
 		    typedef const Value ConstReturnValue;
 		    typedef const Value ReturnValue;
 		  };
 		  template <typename Map>
 		  struct MapTraits<
 		    Map, typename enable_if<typename Map::ReferenceMapTag, void>::type >
+		  {
 		    typedef True ReferenceMapTag;
 		    typedef typename Map::Key Key;
 		    typedef typename Map::Value Value;
 		    typedef typename Map::ConstReference ConstReturnValue;
 		    typedef typename Map::Reference ReturnValue;
 		    typedef typename Map::ConstReference ConstReference;
 		    typedef typename Map::Reference Reference;
 		 };
 		  template <typename MatrixMap, typename Enable = void>
 		  struct MatrixMapTraits {
 		    typedef False ReferenceMapTag;
 		    typedef typename MatrixMap::FirstKey FirstKey;
 		    typedef typename MatrixMap::SecondKey SecondKey;
 		    typedef typename MatrixMap::Value Value;
 		    typedef const Value ConstReturnValue;
 		    typedef const Value ReturnValue;
 		  };
 		  template <typename MatrixMap>
 		  struct MatrixMapTraits<
 		    MatrixMap, typename enable_if<typename MatrixMap::ReferenceMapTag,
 		                                  void>::type >
+		  {
 		    typedef True ReferenceMapTag;
 		    typedef typename MatrixMap::FirstKey FirstKey;
 		    typedef typename MatrixMap::SecondKey SecondKey;
 		    typedef typename MatrixMap::Value Value;
 		    typedef typename MatrixMap::ConstReference ConstReturnValue;
 		    typedef typename MatrixMap::Reference ReturnValue;
 		    typedef typename MatrixMap::ConstReference ConstReference;
 		    typedef typename MatrixMap::Reference Reference;
 		 };
 		  // Indicators for the tags
 		  template <typename Graph, typename Enable = void>
 		  struct NodeNumTagIndicator {
 		    static const bool value = false;
 		  };
 		  template <typename Graph>
 		  struct NodeNumTagIndicator<
 		    Graph,
 		    typename enable_if<typename Graph::NodeNumTag, void>::type
 		  > {
 		    static const bool value = true;
 		  };
 		  template <typename Graph, typename Enable = void>
 		  struct ArcNumTagIndicator {
 		    static const bool value = false;
 		  };
 		  template <typename Graph>
 		  struct ArcNumTagIndicator<
 		    Graph,
 		    typename enable_if<typename Graph::ArcNumTag, void>::type
 		  > {
 		    static const bool value = true;
 		  };
 		  template <typename Graph, typename Enable = void>
 		  struct FindArcTagIndicator {
 		    static const bool value = false;
 		  };
 		  template <typename Graph>
 		  struct FindArcTagIndicator<
 		    Graph,
 		    typename enable_if<typename Graph::FindArcTag, void>::type
 		  > {
 		    static const bool value = true;
 		  };
 		  template <typename Graph, typename Enable = void>
 		  struct UndirectedTagIndicator {
 		    static const bool value = false;
 		  };
 		  template <typename Graph>
 		  struct UndirectedTagIndicator<
 		    Graph,
 		    typename enable_if<typename Graph::UndirectedTag, void>::type
 		  > {
 		    static const bool value = true;
 		  };
 		  template <typename Graph, typename Enable = void>
 		  struct BuildTagIndicator {
 		    static const bool value = false;
 		  };
 		  template <typename Graph>
 		  struct BuildTagIndicator<
 		    Graph,
 		    typename enable_if<typename Graph::BuildTag, void>::type
 		  > {
 		    static const bool value = true;
 		  };
+		}
 		#endif

lemon/bits/vector_map.h

Show inline comments

 		/* -*- C++ -*-
+		 *
 		 * This file is a part of LEMON, a generic C++ optimization library
+		 *
 		 * Copyright (C) 2003-2007
 		 * Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport
 		 * (Egervary Research Group on Combinatorial Optimization, EGRES).
+		 *
 		 * Permission to use, modify and distribute this software is granted
 		 * provided that this copyright notice appears in all copies. For
 		 * precise terms see the accompanying LICENSE file.
+		 *
 		 * This software is provided "AS IS" with no warranty of any kind,
 		 * express or implied, and with no claim as to its suitability for any
 		 * purpose.
+		 *
 		 */
 		#ifndef LEMON_BITS_VECTOR_MAP_H
 		#define LEMON_BITS_VECTOR_MAP_H
 		#include <vector>
 		#include <algorithm>
 		#include <lemon/bits/traits.h>
 		#include <lemon/bits/utility.h>
 		#include <lemon/bits/alteration_notifier.h>
 		#include <lemon/concept_check.h>
 		#include <lemon/concepts/maps.h>
 		///\ingroup graphbits
 		///
 		///\file
 		///\brief Vector based graph maps.
 		namespace lemon {
 		  /// \ingroup graphbits
 		  ///
 		  /// \brief Graph map based on the std::vector storage.
 		  ///
 		  /// The VectorMap template class is graph map structure what
 		  /// automatically updates the map when a key is added to or erased from
 		  /// the map. This map type uses the std::vector to store the values.
 		  ///
 		  /// \param Notifier The AlterationNotifier that will notify this map.
 		  /// \param Item The item type of the graph items.
 		  /// \param Value The value type of the map.
 		  ///
 		  /// \author Balazs Dezso
 		  template <typename _Graph, typename _Item, typename _Value>
 		  class VectorMap
 		    : public ItemSetTraits<_Graph, _Item>::ItemNotifier::ObserverBase {
 		  private:
 		    /// The container type of the map.
 		    typedef std::vector<_Value> Container;
 		  public:
 		    /// The graph type of the map.
 		    typedef _Graph Graph;
 		    /// The item type of the map.
 		    typedef _Item Item;
 		    /// The reference map tag.
 		    typedef True ReferenceMapTag;
 		    /// The key type of the map.
 		    typedef _Item Key;
 		    /// The value type of the map.
 		    typedef _Value Value;
 		    /// The notifier type.
 		    typedef typename ItemSetTraits<_Graph, _Item>::ItemNotifier Notifier;
 		    /// The map type.
 		    typedef VectorMap Map;
 		    /// The base class of the map.
 		    typedef typename Notifier::ObserverBase Parent;
 		    /// The reference type of the map;
 		    typedef typename Container::reference Reference;
 		    /// The const reference type of the map;
 		    typedef typename Container::const_reference ConstReference;
 		    /// \brief Constructor to attach the new map into the notifier.
 		    ///
 		    /// It constructs a map and attachs it into the notifier.
 		    /// It adds all the items of the graph to the map.
 		    VectorMap(const Graph& graph) {
 		      Parent::attach(graph.notifier(Item()));
 		      container.resize(Parent::notifier()->maxId() + 1);
+		    }
 		    /// \brief Constructor uses given value to initialize the map.
 		    ///
 		    /// It constructs a map uses a given value to initialize the map.
 		    /// It adds all the items of the graph to the map.
 		    VectorMap(const Graph& graph, const Value& value) {
 		      Parent::attach(graph.notifier(Item()));
 		      container.resize(Parent::notifier()->maxId() + 1, value);
+		    }
 		    /// \brief Copy constructor
 		    ///
 		    /// Copy constructor.
 		    VectorMap(const VectorMap& _copy) : Parent() {
 		      if (_copy.attached()) {
 			Parent::attach(*_copy.notifier());
 			container = _copy.container;
+		      }
+		    }
 		    /// \brief Assign operator.
 		    ///
 		    /// This operator assigns for each item in the map the
 		    /// value mapped to the same item in the copied map.
 		    /// The parameter map should be indiced with the same
 		    /// itemset because this assign operator does not change
 		    /// the container of the map.
 		    VectorMap& operator=(const VectorMap& cmap) {
 		      return operator=<VectorMap>(cmap);
+		    }
 		    /// \brief Template assign operator.
 		    ///
 		    /// The given parameter should be conform to the ReadMap
 		    /// concecpt and could be indiced by the current item set of
 		    /// the NodeMap. In this case the value for each item
 		    /// is assigned by the value of the given ReadMap.
 		    template <typename CMap>
 		    VectorMap& operator=(const CMap& cmap) {
 		      checkConcept<concepts::ReadMap<Key, _Value>, CMap>();
 		      const typename Parent::Notifier* nf = Parent::notifier();
 		      Item it;
 		      for (nf->first(it); it != INVALID; nf->next(it)) {
 		        set(it, cmap[it]);
+		      }
 		      return *this;
+		    }
 		  public:
 		    /// \brief The subcript operator.
 		    ///
 		    /// The subscript operator. The map can be subscripted by the
 		    /// actual items of the graph.
 		    Reference operator[](const Key& key) {
 		      return container[Parent::notifier()->id(key)];
+		    }
 		    /// \brief The const subcript operator.
 		    ///
 		    /// The const subscript operator. The map can be subscripted by the
 		    /// actual items of the graph.
 		    ConstReference operator[](const Key& key) const {
 		      return container[Parent::notifier()->id(key)];
+		    }
 		    /// \brief The setter function of the map.
 		    ///
 		    /// It the same as operator[](key) = value expression.
 		    void set(const Key& key, const Value& value) {
 		      (*this)[key] = value;
+		    }
 		  protected:
 		    /// \brief Adds a new key to the map.
 		    ///
 		    /// It adds a new key to the map. It called by the observer notifier
 		    /// and it overrides the add() member function of the observer base.
 		    virtual void add(const Key& key) {
 		      int id = Parent::notifier()->id(key);
 		      if (id >= int(container.size())) {
 			container.resize(id + 1);
+		      }
+		    }
 		    /// \brief Adds more new keys to the map.
 		    ///
 		    /// It adds more new keys to the map. It called by the observer notifier
 		    /// and it overrides the add() member function of the observer base.
 		    virtual void add(const std::vector<Key>& keys) {
 		      int max = container.size() - 1;
 		      for (int i = 0; i < int(keys.size()); ++i) {
 		        int id = Parent::notifier()->id(keys[i]);
 		        if (id >= max) {
 		          max = id;
+		        }
+		      }
 		      container.resize(max + 1);
+		    }
 		    /// \brief Erase a key from the map.
 		    ///
 		    /// Erase a key from the map. It called by the observer notifier
 		    /// and it overrides the erase() member function of the observer base.
 		    virtual void erase(const Key& key) {
 		      container[Parent::notifier()->id(key)] = Value();
+		    }
 		    /// \brief Erase more keys from the map.
 		    ///
 		    /// Erase more keys from the map. It called by the observer notifier
 		    /// and it overrides the erase() member function of the observer base.
 		    virtual void erase(const std::vector<Key>& keys) {
 		      for (int i = 0; i < int(keys.size()); ++i) {
 			container[Parent::notifier()->id(keys[i])] = Value();
+		      }
+		    }
 		    /// \brief Buildes the map.
 		    ///
 		    /// It buildes the map. It called by the observer notifier
 		    /// and it overrides the build() member function of the observer base.
 		    virtual void build() {
 		      int size = Parent::notifier()->maxId() + 1;
 		      container.reserve(size);
 		      container.resize(size);
+		    }
 		    /// \brief Clear the map.
 		    ///
 		    /// It erase all items from the map. It called by the observer notifier
 		    /// and it overrides the clear() member function of the observer base.
 		    virtual void clear() {
 		      container.clear();
+		    }
 		  private:
 		    Container container;
 		  };
+		}
 		#endif

lemon/concepts/digraph.h

Show inline comments

 		/* -*- C++ -*-
+		 *
 		 * This file is a part of LEMON, a generic C++ optimization library
+		 *
 		 * Copyright (C) 2003-2007
 		 * Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport
 		 * (Egervary Research Group on Combinatorial Optimization, EGRES).
+		 *
 		 * Permission to use, modify and distribute this software is granted
 		 * provided that this copyright notice appears in all copies. For
 		 * precise terms see the accompanying LICENSE file.
+		 *
 		 * This software is provided "AS IS" with no warranty of any kind,
 		 * express or implied, and with no claim as to its suitability for any
 		 * purpose.
+		 *
 		 */
 		#ifndef LEMON_CONCEPT_DIGRAPH_H
 		#define LEMON_CONCEPT_DIGRAPH_H
 		///\ingroup graph_concepts
 		///\file
 		///\brief The concept of directed graphs.
 		#include <lemon/bits/invalid.h>
 		#include <lemon/bits/utility.h>
 		#include <lemon/concepts/maps.h>
 		#include <lemon/concept_check.h>
 		#include <lemon/concepts/graph_components.h>
 		namespace lemon {
 		  namespace concepts {
 		    /// \ingroup graph_concepts
 		    ///
 		    /// \brief Class describing the concept of directed graphs.
 		    ///
 		    /// This class describes the \ref concept "concept" of the
 		    /// immutable directed digraphs.
 		    ///
 		    /// Note that actual digraph implementation like @ref ListDigraph or
 		    /// @ref SmartDigraph may have several additional functionality.
 		    ///
 		    /// \sa concept
 		    class Digraph {
 		    private:
 		      ///Digraphs are \e not copy constructible. Use DigraphCopy() instead.
 		      ///Digraphs are \e not copy constructible. Use DigraphCopy() instead.
 		      ///
 		      Digraph(const Digraph &) {};
 		      ///\brief Assignment of \ref Digraph "Digraph"s to another ones are
 		      ///\e not allowed. Use DigraphCopy() instead.
 		      ///Assignment of \ref Digraph "Digraph"s to another ones are
 		      ///\e not allowed.  Use DigraphCopy() instead.
 		      void operator=(const Digraph &) {}
 		    public:
 		      ///\e
 		      /// Defalult constructor.
 		      /// Defalult constructor.
 		      ///
 		      Digraph() { }
 		      /// Class for identifying a node of the digraph
 		      /// This class identifies a node of the digraph. It also serves
 		      /// as a base class of the node iterators,
 		      /// thus they will convert to this type.
 		      class Node {
 		      public:
 		        /// Default constructor
 		        /// @warning The default constructor sets the iterator
 		        /// to an undefined value.
 		        Node() { }
 		        /// Copy constructor.
 		        /// Copy constructor.
 		        ///
 		        Node(const Node&) { }
 		        /// Invalid constructor \& conversion.
 		        /// This constructor initializes the iterator to be invalid.
 		        /// \sa Invalid for more details.
 		        Node(Invalid) { }
 		        /// Equality operator
 		        /// Two iterators are equal if and only if they point to the
 		        /// same object or both are invalid.
 		        bool operator==(Node) const { return true; }
 		        /// Inequality operator
 		        /// \sa operator==(Node n)
 		        ///
 		        bool operator!=(Node) const { return true; }
 			/// Artificial ordering operator.
 			/// To allow the use of digraph descriptors as key type in std::map or
 			/// similar associative container we require this.
 			///
 			/// \note This operator only have to define some strict ordering of
 			/// the items; this order has nothing to do with the iteration
 			/// ordering of the items.
 			bool operator<(Node) const { return false; }
 		      };
 		      /// This iterator goes through each node.
 		      /// This iterator goes through each node.
 		      /// Its usage is quite simple, for example you can count the number
 		      /// of nodes in digraph \c g of type \c Digraph like this:
 		      ///\code
 		      /// int count=0;
 		      /// for (Digraph::NodeIt n(g); n!=INVALID; ++n) ++count;
 		      ///\endcode
 		      class NodeIt : public Node {
 		      public:
 		        /// Default constructor
 		        /// @warning The default constructor sets the iterator
 		        /// to an undefined value.
 		        NodeIt() { }
 		        /// Copy constructor.
 		        /// Copy constructor.
 		        ///
 		        NodeIt(const NodeIt& n) : Node(n) { }
 		        /// Invalid constructor \& conversion.
 		        /// Initialize the iterator to be invalid.
 		        /// \sa Invalid for more details.
 		        NodeIt(Invalid) { }
 		        /// Sets the iterator to the first node.
 		        /// Sets the iterator to the first node of \c g.
 		        ///
 		        NodeIt(const Digraph&) { }
 		        /// Node -> NodeIt conversion.
 		        /// Sets the iterator to the node of \c the digraph pointed by
 			/// the trivial iterator.
 		        /// This feature necessitates that each time we
 		        /// iterate the arc-set, the iteration order is the same.
 		        NodeIt(const Digraph&, const Node&) { }
 		        /// Next node.
 		        /// Assign the iterator to the next node.
 		        ///
 		        NodeIt& operator++() { return *this; }
 		      };
 		      /// Class for identifying an arc of the digraph
 		      /// This class identifies an arc of the digraph. It also serves
 		      /// as a base class of the arc iterators,
 		      /// thus they will convert to this type.
 		      class Arc {
 		      public:
 		        /// Default constructor
 		        /// @warning The default constructor sets the iterator
 		        /// to an undefined value.
 		        Arc() { }
 		        /// Copy constructor.
 		        /// Copy constructor.
 		        ///
 		        Arc(const Arc&) { }
 		        /// Initialize the iterator to be invalid.
 		        /// Initialize the iterator to be invalid.
 		        ///
 		        Arc(Invalid) { }
 		        /// Equality operator
 		        /// Two iterators are equal if and only if they point to the
 		        /// same object or both are invalid.
 		        bool operator==(Arc) const { return true; }
 		        /// Inequality operator
 		        /// \sa operator==(Arc n)
 		        ///
 		        bool operator!=(Arc) const { return true; }
 			/// Artificial ordering operator.
 			/// To allow the use of digraph descriptors as key type in std::map or
 			/// similar associative container we require this.
 			///
 			/// \note This operator only have to define some strict ordering of
 			/// the items; this order has nothing to do with the iteration
 			/// ordering of the items.
 			bool operator<(Arc) const { return false; }
 		      };
 		      /// This iterator goes trough the outgoing arcs of a node.
 		      /// This iterator goes trough the \e outgoing arcs of a certain node
 		      /// of a digraph.
 		      /// Its usage is quite simple, for example you can count the number
 		      /// of outgoing arcs of a node \c n
 		      /// in digraph \c g of type \c Digraph as follows.
 		      ///\code
 		      /// int count=0;
 		      /// for (Digraph::OutArcIt e(g, n); e!=INVALID; ++e) ++count;
 		      ///\endcode
 		      class OutArcIt : public Arc {
 		      public:
 		        /// Default constructor
 		        /// @warning The default constructor sets the iterator
 		        /// to an undefined value.
 		        OutArcIt() { }
 		        /// Copy constructor.
 		        /// Copy constructor.
 		        ///
 		        OutArcIt(const OutArcIt& e) : Arc(e) { }
 		        /// Initialize the iterator to be invalid.
 		        /// Initialize the iterator to be invalid.
 		        ///
 		        OutArcIt(Invalid) { }
 		        /// This constructor sets the iterator to the first outgoing arc.
 		        /// This constructor sets the iterator to the first outgoing arc of
 		        /// the node.
 		        OutArcIt(const Digraph&, const Node&) { }
 		        /// Arc -> OutArcIt conversion
 		        /// Sets the iterator to the value of the trivial iterator.
 			/// This feature necessitates that each time we
 		        /// iterate the arc-set, the iteration order is the same.
 		        OutArcIt(const Digraph&, const Arc&) { }
 		        ///Next outgoing arc
 		        /// Assign the iterator to the next
 		        /// outgoing arc of the corresponding node.
 		        OutArcIt& operator++() { return *this; }
 		      };
 		      /// This iterator goes trough the incoming arcs of a node.
 		      /// This iterator goes trough the \e incoming arcs of a certain node
 		      /// of a digraph.
 		      /// Its usage is quite simple, for example you can count the number
 		      /// of outgoing arcs of a node \c n
 		      /// in digraph \c g of type \c Digraph as follows.
 		      ///\code
 		      /// int count=0;
 		      /// for(Digraph::InArcIt e(g, n); e!=INVALID; ++e) ++count;
 		      ///\endcode
 		      class InArcIt : public Arc {
 		      public:
 		        /// Default constructor
 		        /// @warning The default constructor sets the iterator
 		        /// to an undefined value.
 		        InArcIt() { }
 		        /// Copy constructor.
 		        /// Copy constructor.
 		        ///
 		        InArcIt(const InArcIt& e) : Arc(e) { }
 		        /// Initialize the iterator to be invalid.
 		        /// Initialize the iterator to be invalid.
 		        ///
 		        InArcIt(Invalid) { }
 		        /// This constructor sets the iterator to first incoming arc.
 		        /// This constructor set the iterator to the first incoming arc of
 		        /// the node.
 		        InArcIt(const Digraph&, const Node&) { }
 		        /// Arc -> InArcIt conversion
 		        /// Sets the iterator to the value of the trivial iterator \c e.
 		        /// This feature necessitates that each time we
 		        /// iterate the arc-set, the iteration order is the same.
 		        InArcIt(const Digraph&, const Arc&) { }
 		        /// Next incoming arc
 		        /// Assign the iterator to the next inarc of the corresponding node.
 		        ///
 		        InArcIt& operator++() { return *this; }
 		      };
 		      /// This iterator goes through each arc.
 		      /// This iterator goes through each arc of a digraph.
 		      /// Its usage is quite simple, for example you can count the number
 		      /// of arcs in a digraph \c g of type \c Digraph as follows:
 		      ///\code
 		      /// int count=0;
 		      /// for(Digraph::ArcIt e(g); e!=INVALID; ++e) ++count;
 		      ///\endcode
 		      class ArcIt : public Arc {
 		      public:
 		        /// Default constructor
 		        /// @warning The default constructor sets the iterator
 		        /// to an undefined value.
 		        ArcIt() { }
 		        /// Copy constructor.
 		        /// Copy constructor.
 		        ///
 		        ArcIt(const ArcIt& e) : Arc(e) { }
 		        /// Initialize the iterator to be invalid.
 		        /// Initialize the iterator to be invalid.
 		        ///
 		        ArcIt(Invalid) { }
 		        /// This constructor sets the iterator to the first arc.
 		        /// This constructor sets the iterator to the first arc of \c g.
 		        ///@param g the digraph
 		        ArcIt(const Digraph& g) { ignore_unused_variable_warning(g); }
 		        /// Arc -> ArcIt conversion
 		        /// Sets the iterator to the value of the trivial iterator \c e.
 		        /// This feature necessitates that each time we
 		        /// iterate the arc-set, the iteration order is the same.
 		        ArcIt(const Digraph&, const Arc&) { }
 		        ///Next arc
 		        /// Assign the iterator to the next arc.
 		        ArcIt& operator++() { return *this; }
 		      };
 		      ///Gives back the target node of an arc.
 		      ///Gives back the target node of an arc.
 		      ///
 		      Node target(Arc) const { return INVALID; }
 		      ///Gives back the source node of an arc.
 		      ///Gives back the source node of an arc.
 		      ///
 		      Node source(Arc) const { return INVALID; }
 		      void first(Node&) const {}
 		      void next(Node&) const {}
 		      void first(Arc&) const {}
 		      void next(Arc&) const {}
 		      void firstIn(Arc&, const Node&) const {}
 		      void nextIn(Arc&) const {}
 		      void firstOut(Arc&, const Node&) const {}
 		      void nextOut(Arc&) const {}
 		      /// \brief The base node of the iterator.
 		      ///
 		      /// Gives back the base node of the iterator.
 		      /// It is always the target of the pointed arc.
 		      Node baseNode(const InArcIt&) const { return INVALID; }
 		      /// \brief The running node of the iterator.
 		      ///
 		      /// Gives back the running node of the iterator.
 		      /// It is always the source of the pointed arc.
 		      Node runningNode(const InArcIt&) const { return INVALID; }
 		      /// \brief The base node of the iterator.
 		      ///
 		      /// Gives back the base node of the iterator.
 		      /// It is always the source of the pointed arc.
 		      Node baseNode(const OutArcIt&) const { return INVALID; }
 		      /// \brief The running node of the iterator.
 		      ///
 		      /// Gives back the running node of the iterator.
 		      /// It is always the target of the pointed arc.
 		      Node runningNode(const OutArcIt&) const { return INVALID; }
 		      /// \brief The opposite node on the given arc.
 		      ///
 		      /// Gives back the opposite node on the given arc.
 		      Node oppositeNode(const Node&, const Arc&) const { return INVALID; }
 		      /// \brief Read write map of the nodes to type \c T.
 		      ///
 		      /// ReadWrite map of the nodes to type \c T.
 		      /// \sa Reference
 		      template<class T>
 		      class NodeMap : public ReadWriteMap< Node, T > {
 		      public:
 		        ///\e
 		        NodeMap(const Digraph&) { }
 		        ///\e
 		        NodeMap(const Digraph&, T) { }
 		        ///Copy constructor
 		        NodeMap(const NodeMap& nm) : ReadWriteMap< Node, T >(nm) { }
 		        ///Assignment operator
 		        template <typename CMap>
 		        NodeMap& operator=(const CMap&) {
 		          checkConcept<ReadMap<Node, T>, CMap>();
 		          return *this;
+		        }
 		      };
 		      /// \brief Read write map of the arcs to type \c T.
 		      ///
 		      /// Reference map of the arcs to type \c T.
 		      /// \sa Reference
 		      template<class T>
 		      class ArcMap : public ReadWriteMap<Arc,T> {
 		      public:
 		        ///\e
 		        ArcMap(const Digraph&) { }
 		        ///\e
 		        ArcMap(const Digraph&, T) { }
 		        ///Copy constructor
 		        ArcMap(const ArcMap& em) : ReadWriteMap<Arc,T>(em) { }
 		        ///Assignment operator
 		        template <typename CMap>
 		        ArcMap& operator=(const CMap&) {
 		          checkConcept<ReadMap<Arc, T>, CMap>();
 		          return *this;
+		        }
 		      };
 		      template <typename RDigraph>
 		      struct Constraints {
 		        void constraints() {
 		          checkConcept<IterableDigraphComponent<>, Digraph>();
 		          checkConcept<MappableDigraphComponent<>, Digraph>();
+		        }
 		      };
 		    };
 		  } //namespace concepts
 		} //namespace lemon
 		#endif // LEMON_CONCEPT_DIGRAPH_H

lemon/concepts/graph.h

Show inline comments

 		/* -*- C++ -*-
+		 *
 		 * This file is a part of LEMON, a generic C++ optimization library
+		 *
 		 * Copyright (C) 2003-2007
 		 * Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport
 		 * (Egervary Research Group on Combinatorial Optimization, EGRES).
+		 *
 		 * Permission to use, modify and distribute this software is granted
 		 * provided that this copyright notice appears in all copies. For
 		 * precise terms see the accompanying LICENSE file.
+		 *
 		 * This software is provided "AS IS" with no warranty of any kind,
 		 * express or implied, and with no claim as to its suitability for any
 		 * purpose.
+		 *
 		 */
 		///\ingroup graph_concepts
 		///\file
 		///\brief The concept of Undirected Graphs.
 		#ifndef LEMON_CONCEPT_GRAPH_H
 		#define LEMON_CONCEPT_GRAPH_H
 		#include <lemon/concepts/graph_components.h>
 		#include <lemon/concepts/graph.h>
 		#include <lemon/bits/utility.h>
 		namespace lemon {
 		  namespace concepts {
 		    /// \ingroup graph_concepts
 		    ///
 		    /// \brief Class describing the concept of Undirected Graphs.
 		    ///
 		    /// This class describes the common interface of all Undirected
 		    /// Graphs.
 		    ///
 		    /// As all concept describing classes it provides only interface
 		    /// without any sensible implementation. So any algorithm for
 		    /// undirected graph should compile with this class, but it will not
 		    /// run properly, of course.
 		    ///
 		    /// The LEMON undirected graphs also fulfill the concept of
 		    /// directed graphs (\ref lemon::concepts::Digraph "Digraph
 		    /// Concept"). Each edges can be seen as two opposite
 		    /// directed arc and consequently the undirected graph can be
 		    /// seen as the direceted graph of these directed arcs. The
 		    /// Graph has the Edge inner class for the edges and
 		    /// the Arc type for the directed arcs. The Arc type is
 		    /// convertible to Edge or inherited from it so from a directed
 		    /// arc we can get the represented edge.
 		    ///
 		    /// In the sense of the LEMON each edge has a default
 		    /// direction (it should be in every computer implementation,
 		    /// because the order of edge's nodes defines an
 		    /// orientation). With the default orientation we can define that
 		    /// the directed arc is forward or backward directed. With the \c
 		    /// direction() and \c direct() function we can get the direction
 		    /// of the directed arc and we can direct an edge.
 		    ///
 		    /// The EdgeIt is an iterator for the edges. We can use
 		    /// the EdgeMap to map values for the edges. The InArcIt and
 		    /// OutArcIt iterates on the same edges but with opposite
 		    /// direction. The IncArcIt iterates also on the same edges
 		    /// as the OutArcIt and InArcIt but it is not convertible to Arc just
 		    /// to Edge.
 		    class Graph {
 		    public:
 		      /// \brief The undirected graph should be tagged by the
 		      /// UndirectedTag.
 		      ///
 		      /// The undirected graph should be tagged by the UndirectedTag. This
 		      /// tag helps the enable_if technics to make compile time
 		      /// specializations for undirected graphs.
 		      typedef True UndirectedTag;
 		      /// \brief The base type of node iterators,
 		      /// or in other words, the trivial node iterator.
 		      ///
 		      /// This is the base type of each node iterator,
 		      /// thus each kind of node iterator converts to this.
 		      /// More precisely each kind of node iterator should be inherited
 		      /// from the trivial node iterator.
 		      class Node {
 		      public:
 		        /// Default constructor
 		        /// @warning The default constructor sets the iterator
 		        /// to an undefined value.
 		        Node() { }
 		        /// Copy constructor.
 		        /// Copy constructor.
 		        ///
 		        Node(const Node&) { }
 		        /// Invalid constructor \& conversion.
 		        /// This constructor initializes the iterator to be invalid.
 		        /// \sa Invalid for more details.
 		        Node(Invalid) { }
 		        /// Equality operator
 		        /// Two iterators are equal if and only if they point to the
 		        /// same object or both are invalid.
 		        bool operator==(Node) const { return true; }
 		        /// Inequality operator
 		        /// \sa operator==(Node n)
 		        ///
 		        bool operator!=(Node) const { return true; }
 			/// Artificial ordering operator.
 			/// To allow the use of graph descriptors as key type in std::map or
 			/// similar associative container we require this.
 			///
 			/// \note This operator only have to define some strict ordering of
 			/// the items; this order has nothing to do with the iteration
 			/// ordering of the items.
 			bool operator<(Node) const { return false; }
 		      };
 		      /// This iterator goes through each node.
 		      /// This iterator goes through each node.
 		      /// Its usage is quite simple, for example you can count the number
 		      /// of nodes in graph \c g of type \c Graph like this:
 		      ///\code
 		      /// int count=0;
 		      /// for (Graph::NodeIt n(g); n!=INVALID; ++n) ++count;
 		      ///\endcode
 		      class NodeIt : public Node {
 		      public:
 		        /// Default constructor
 		        /// @warning The default constructor sets the iterator
 		        /// to an undefined value.
 		        NodeIt() { }
 		        /// Copy constructor.
 		        /// Copy constructor.
 		        ///
 		        NodeIt(const NodeIt& n) : Node(n) { }
 		        /// Invalid constructor \& conversion.
 		        /// Initialize the iterator to be invalid.
 		        /// \sa Invalid for more details.
 		        NodeIt(Invalid) { }
 		        /// Sets the iterator to the first node.
 		        /// Sets the iterator to the first node of \c g.
 		        ///
 		        NodeIt(const Graph&) { }
 		        /// Node -> NodeIt conversion.
 		        /// Sets the iterator to the node of \c the graph pointed by
 			/// the trivial iterator.
 		        /// This feature necessitates that each time we
 		        /// iterate the arc-set, the iteration order is the same.
 		        NodeIt(const Graph&, const Node&) { }
 		        /// Next node.
 		        /// Assign the iterator to the next node.
 		        ///
 		        NodeIt& operator++() { return *this; }
 		      };
 		      /// The base type of the edge iterators.
 		      /// The base type of the edge iterators.
 		      ///
 		      class Edge {
 		      public:
 		        /// Default constructor
 		        /// @warning The default constructor sets the iterator
 		        /// to an undefined value.
 		        Edge() { }
 		        /// Copy constructor.
 		        /// Copy constructor.
 		        ///
 		        Edge(const Edge&) { }
 		        /// Initialize the iterator to be invalid.
 		        /// Initialize the iterator to be invalid.
 		        ///
 		        Edge(Invalid) { }
 		        /// Equality operator
 		        /// Two iterators are equal if and only if they point to the
 		        /// same object or both are invalid.
 		        bool operator==(Edge) const { return true; }
 		        /// Inequality operator
 		        /// \sa operator==(Edge n)
 		        ///
 		        bool operator!=(Edge) const { return true; }
 			/// Artificial ordering operator.
 			/// To allow the use of graph descriptors as key type in std::map or
 			/// similar associative container we require this.
 			///
 			/// \note This operator only have to define some strict ordering of
 			/// the items; this order has nothing to do with the iteration
 			/// ordering of the items.
 			bool operator<(Edge) const { return false; }
 		      };
 		      /// This iterator goes through each edge.
 		      /// This iterator goes through each edge of a graph.
 		      /// Its usage is quite simple, for example you can count the number
 		      /// of edges in a graph \c g of type \c Graph as follows:
 		      ///\code
 		      /// int count=0;
 		      /// for(Graph::EdgeIt e(g); e!=INVALID; ++e) ++count;
 		      ///\endcode
 		      class EdgeIt : public Edge {
 		      public:
 		        /// Default constructor
 		        /// @warning The default constructor sets the iterator
 		        /// to an undefined value.
 		        EdgeIt() { }
 		        /// Copy constructor.
 		        /// Copy constructor.
 		        ///
 		        EdgeIt(const EdgeIt& e) : Edge(e) { }
 		        /// Initialize the iterator to be invalid.
 		        /// Initialize the iterator to be invalid.
 		        ///
 		        EdgeIt(Invalid) { }
 		        /// This constructor sets the iterator to the first edge.
 		        /// This constructor sets the iterator to the first edge.
 		        EdgeIt(const Graph&) { }
 		        /// Edge -> EdgeIt conversion
 		        /// Sets the iterator to the value of the trivial iterator.
 		        /// This feature necessitates that each time we
 		        /// iterate the edge-set, the iteration order is the
 			/// same.
 		        EdgeIt(const Graph&, const Edge&) { }
 		        /// Next edge
 		        /// Assign the iterator to the next edge.
 		        EdgeIt& operator++() { return *this; }
 		      };
 		      /// \brief This iterator goes trough the incident undirected
 		      /// arcs of a node.
 		      ///
 		      /// This iterator goes trough the incident edges
 		      /// of a certain node of a graph. You should assume that the
 		      /// loop arcs will be iterated twice.
 		      ///
 		      /// Its usage is quite simple, for example you can compute the
 		      /// degree (i.e. count the number of incident arcs of a node \c n
 		      /// in graph \c g of type \c Graph as follows.
 		      ///
 		      ///\code
 		      /// int count=0;
 		      /// for(Graph::IncArcIt e(g, n); e!=INVALID; ++e) ++count;
 		      ///\endcode
 		      class IncArcIt : public Edge {
 		      public:
 		        /// Default constructor
 		        /// @warning The default constructor sets the iterator
 		        /// to an undefined value.
 		        IncArcIt() { }
 		        /// Copy constructor.
 		        /// Copy constructor.
 		        ///
 		        IncArcIt(const IncArcIt& e) : Edge(e) { }
 		        /// Initialize the iterator to be invalid.
 		        /// Initialize the iterator to be invalid.
 		        ///
 		        IncArcIt(Invalid) { }
 		        /// This constructor sets the iterator to first incident arc.
 		        /// This constructor set the iterator to the first incident arc of
 		        /// the node.
 		        IncArcIt(const Graph&, const Node&) { }
 		        /// Edge -> IncArcIt conversion
 		        /// Sets the iterator to the value of the trivial iterator \c e.
 		        /// This feature necessitates that each time we
 		        /// iterate the arc-set, the iteration order is the same.
 		        IncArcIt(const Graph&, const Edge&) { }
 		        /// Next incident arc
 		        /// Assign the iterator to the next incident arc
 			/// of the corresponding node.
 		        IncArcIt& operator++() { return *this; }
 		      };
 		      /// The directed arc type.
 		      /// The directed arc type. It can be converted to the
 		      /// edge or it should be inherited from the undirected
 		      /// arc.
 		      class Arc : public Edge {
 		      public:
 		        /// Default constructor
 		        /// @warning The default constructor sets the iterator
 		        /// to an undefined value.
 		        Arc() { }
 		        /// Copy constructor.
 		        /// Copy constructor.
 		        ///
 		        Arc(const Arc& e) : Edge(e) { }
 		        /// Initialize the iterator to be invalid.
 		        /// Initialize the iterator to be invalid.
 		        ///
 		        Arc(Invalid) { }
 		        /// Equality operator
 		        /// Two iterators are equal if and only if they point to the
 		        /// same object or both are invalid.
 		        bool operator==(Arc) const { return true; }
 		        /// Inequality operator
 		        /// \sa operator==(Arc n)
 		        ///
 		        bool operator!=(Arc) const { return true; }
 			/// Artificial ordering operator.
 			/// To allow the use of graph descriptors as key type in std::map or
 			/// similar associative container we require this.
 			///
 			/// \note This operator only have to define some strict ordering of
 			/// the items; this order has nothing to do with the iteration
 			/// ordering of the items.
 			bool operator<(Arc) const { return false; }
 		      };
 		      /// This iterator goes through each directed arc.
 		      /// This iterator goes through each arc of a graph.
 		      /// Its usage is quite simple, for example you can count the number
 		      /// of arcs in a graph \c g of type \c Graph as follows:
 		      ///\code
 		      /// int count=0;
 		      /// for(Graph::ArcIt e(g); e!=INVALID; ++e) ++count;
 		      ///\endcode
 		      class ArcIt : public Arc {
 		      public:
 		        /// Default constructor
 		        /// @warning The default constructor sets the iterator
 		        /// to an undefined value.
 		        ArcIt() { }
 		        /// Copy constructor.
 		        /// Copy constructor.
 		        ///
 		        ArcIt(const ArcIt& e) : Arc(e) { }
 		        /// Initialize the iterator to be invalid.
 		        /// Initialize the iterator to be invalid.
 		        ///
 		        ArcIt(Invalid) { }
 		        /// This constructor sets the iterator to the first arc.
 		        /// This constructor sets the iterator to the first arc of \c g.
 		        ///@param g the graph
 		        ArcIt(const Graph &g) { ignore_unused_variable_warning(g); }
 		        /// Arc -> ArcIt conversion
 		        /// Sets the iterator to the value of the trivial iterator \c e.
 		        /// This feature necessitates that each time we
 		        /// iterate the arc-set, the iteration order is the same.
 		        ArcIt(const Graph&, const Arc&) { }
 		        ///Next arc
 		        /// Assign the iterator to the next arc.
 		        ArcIt& operator++() { return *this; }
 		      };
 		      /// This iterator goes trough the outgoing directed arcs of a node.
 		      /// This iterator goes trough the \e outgoing arcs of a certain node
 		      /// of a graph.
 		      /// Its usage is quite simple, for example you can count the number
 		      /// of outgoing arcs of a node \c n
 		      /// in graph \c g of type \c Graph as follows.
 		      ///\code
 		      /// int count=0;
 		      /// for (Graph::OutArcIt e(g, n); e!=INVALID; ++e) ++count;
 		      ///\endcode
 		      class OutArcIt : public Arc {
 		      public:
 		        /// Default constructor
 		        /// @warning The default constructor sets the iterator
 		        /// to an undefined value.
 		        OutArcIt() { }
 		        /// Copy constructor.
 		        /// Copy constructor.
 		        ///
 		        OutArcIt(const OutArcIt& e) : Arc(e) { }
 		        /// Initialize the iterator to be invalid.
 		        /// Initialize the iterator to be invalid.
 		        ///
 		        OutArcIt(Invalid) { }
 		        /// This constructor sets the iterator to the first outgoing arc.
 		        /// This constructor sets the iterator to the first outgoing arc of
 		        /// the node.
 		        ///@param n the node
 		        ///@param g the graph
 		        OutArcIt(const Graph& n, const Node& g) {
 			  ignore_unused_variable_warning(n);
 			  ignore_unused_variable_warning(g);
+			}
 		        /// Arc -> OutArcIt conversion
 		        /// Sets the iterator to the value of the trivial iterator.
 			/// This feature necessitates that each time we
 		        /// iterate the arc-set, the iteration order is the same.
 		        OutArcIt(const Graph&, const Arc&) { }
 		        ///Next outgoing arc
 		        /// Assign the iterator to the next
 		        /// outgoing arc of the corresponding node.
 		        OutArcIt& operator++() { return *this; }
 		      };
 		      /// This iterator goes trough the incoming directed arcs of a node.
 		      /// This iterator goes trough the \e incoming arcs of a certain node
 		      /// of a graph.
 		      /// Its usage is quite simple, for example you can count the number
 		      /// of outgoing arcs of a node \c n
 		      /// in graph \c g of type \c Graph as follows.
 		      ///\code
 		      /// int count=0;
 		      /// for(Graph::InArcIt e(g, n); e!=INVALID; ++e) ++count;
 		      ///\endcode
 		      class InArcIt : public Arc {
 		      public:
 		        /// Default constructor
 		        /// @warning The default constructor sets the iterator
 		        /// to an undefined value.
 		        InArcIt() { }
 		        /// Copy constructor.
 		        /// Copy constructor.
 		        ///
 		        InArcIt(const InArcIt& e) : Arc(e) { }
 		        /// Initialize the iterator to be invalid.
 		        /// Initialize the iterator to be invalid.
 		        ///
 		        InArcIt(Invalid) { }
 		        /// This constructor sets the iterator to first incoming arc.
 		        /// This constructor set the iterator to the first incoming arc of
 		        /// the node.
 		        ///@param n the node
 		        ///@param g the graph
 		        InArcIt(const Graph& g, const Node& n) {
 			  ignore_unused_variable_warning(n);
 			  ignore_unused_variable_warning(g);
+			}
 		        /// Arc -> InArcIt conversion
 		        /// Sets the iterator to the value of the trivial iterator \c e.
 		        /// This feature necessitates that each time we
 		        /// iterate the arc-set, the iteration order is the same.
 		        InArcIt(const Graph&, const Arc&) { }
 		        /// Next incoming arc
 		        /// Assign the iterator to the next inarc of the corresponding node.
 		        ///
 		        InArcIt& operator++() { return *this; }
 		      };
 		      /// \brief Read write map of the nodes to type \c T.
 		      ///
 		      /// ReadWrite map of the nodes to type \c T.
 		      /// \sa Reference
 		      template<class T>
 		      class NodeMap : public ReadWriteMap< Node, T >
+		      {
 		      public:
 		        ///\e
 		        NodeMap(const Graph&) { }
 		        ///\e
 		        NodeMap(const Graph&, T) { }
 		        ///Copy constructor
 		        NodeMap(const NodeMap& nm) : ReadWriteMap< Node, T >(nm) { }
 		        ///Assignment operator
 		        template <typename CMap>
 		        NodeMap& operator=(const CMap&) {
 		          checkConcept<ReadMap<Node, T>, CMap>();
 		          return *this;
+		        }
 		      };
 		      /// \brief Read write map of the directed arcs to type \c T.
 		      ///
 		      /// Reference map of the directed arcs to type \c T.
 		      /// \sa Reference
 		      template<class T>
 		      class ArcMap : public ReadWriteMap<Arc,T>
+		      {
 		      public:
 		        ///\e
 		        ArcMap(const Graph&) { }
 		        ///\e
 		        ArcMap(const Graph&, T) { }
 		        ///Copy constructor
 		        ArcMap(const ArcMap& em) : ReadWriteMap<Arc,T>(em) { }
 		        ///Assignment operator
 		        template <typename CMap>
 		        ArcMap& operator=(const CMap&) {
 		          checkConcept<ReadMap<Arc, T>, CMap>();
 		          return *this;
+		        }
 		      };
 		      /// Read write map of the edges to type \c T.
 		      /// Reference map of the arcs to type \c T.
 		      /// \sa Reference
 		      template<class T>
 		      class EdgeMap : public ReadWriteMap<Edge,T>
+		      {
 		      public:
 		        ///\e
 		        EdgeMap(const Graph&) { }
 		        ///\e
 		        EdgeMap(const Graph&, T) { }
 		        ///Copy constructor
 		        EdgeMap(const EdgeMap& em) : ReadWriteMap<Edge,T>(em) {}
 		        ///Assignment operator
 		        template <typename CMap>
 		        EdgeMap& operator=(const CMap&) {
 		          checkConcept<ReadMap<Edge, T>, CMap>();
 		          return *this;
+		        }
 		      };
 		      /// \brief Direct the given edge.
 		      ///
 		      /// Direct the given edge. The returned arc source
 		      /// will be the given node.
 		      Arc direct(const Edge&, const Node&) const {
 			return INVALID;
+		      }
 		      /// \brief Direct the given edge.
 		      ///
 		      /// Direct the given edge. The returned arc
 		      /// represents the given edge and the direction comes
 		      /// from the bool parameter. The source of the edge and
 		      /// the directed arc is the same when the given bool is true.
 		      Arc direct(const Edge&, bool) const {
 			return INVALID;
+		      }
 		      /// \brief Returns true if the arc has default orientation.
 		      ///
 		      /// Returns whether the given directed arc is same orientation as
 		      /// the corresponding edge's default orientation.
 		      bool direction(Arc) const { return true; }
 		      /// \brief Returns the opposite directed arc.
 		      ///
 		      /// Returns the opposite directed arc.
 		      Arc oppositeArc(Arc) const { return INVALID; }
 		      /// \brief Opposite node on an arc
 		      ///
 		      /// \return the opposite of the given Node on the given Edge
 		      Node oppositeNode(Node, Edge) const { return INVALID; }
 		      /// \brief First node of the edge.
 		      ///
 		      /// \return the first node of the given Edge.
 		      ///
 		      /// Naturally edges don't have direction and thus
 		      /// don't have source and target node. But we use these two methods
 		      /// to query the two nodes of the arc. The direction of the arc
 		      /// which arises this way is called the inherent direction of the
 		      /// edge, and is used to define the "default" direction
 		      /// of the directed versions of the arcs.
 		      /// \sa direction
 		      Node u(Edge) const { return INVALID; }
 		      /// \brief Second node of the edge.
 		      Node v(Edge) const { return INVALID; }
 		      /// \brief Source node of the directed arc.
 		      Node source(Arc) const { return INVALID; }
 		      /// \brief Target node of the directed arc.
 		      Node target(Arc) const { return INVALID; }
 		      void first(Node&) const {}
 		      void next(Node&) const {}
 		      void first(Edge&) const {}
 		      void next(Edge&) const {}
 		      void first(Arc&) const {}
 		      void next(Arc&) const {}
 		      void firstOut(Arc&, Node) const {}
 		      void nextOut(Arc&) const {}
 		      void firstIn(Arc&, Node) const {}
 		      void nextIn(Arc&) const {}
 		      void firstInc(Edge &, bool &, const Node &) const {}
 		      void nextInc(Edge &, bool &) const {}
 		      /// \brief Base node of the iterator
 		      ///
 		      /// Returns the base node (the source in this case) of the iterator
 		      Node baseNode(OutArcIt e) const {
 			return source(e);
+		      }
 		      /// \brief Running node of the iterator
 		      ///
 		      /// Returns the running node (the target in this case) of the
 		      /// iterator
 		      Node runningNode(OutArcIt e) const {
 			return target(e);
+		      }
 		      /// \brief Base node of the iterator
 		      ///
 		      /// Returns the base node (the target in this case) of the iterator
 		      Node baseNode(InArcIt e) const {
 			return target(e);
+		      }
 		      /// \brief Running node of the iterator
 		      ///
 		      /// Returns the running node (the source in this case) of the
 		      /// iterator
 		      Node runningNode(InArcIt e) const {
 			return source(e);
+		      }
 		      /// \brief Base node of the iterator
 		      ///
 		      /// Returns the base node of the iterator
 		      Node baseNode(IncArcIt) const {
 			return INVALID;
+		      }
 		      /// \brief Running node of the iterator
 		      ///
 		      /// Returns the running node of the iterator
 		      Node runningNode(IncArcIt) const {
 			return INVALID;
+		      }
 		      template <typename Graph>
 		      struct Constraints {
 			void constraints() {
 			  checkConcept<IterableGraphComponent<>, Graph>();
 			  checkConcept<MappableGraphComponent<>, Graph>();
+			}
 		      };
 		    };
+		  }
+		}
 		#endif

lemon/concepts/graph_components.h

Show inline comments

 		/* -*- C++ -*-
+		 *
 		 * This file is a part of LEMON, a generic C++ optimization library
+		 *
 		 * Copyright (C) 2003-2007
 		 * Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport
 		 * (Egervary Research Group on Combinatorial Optimization, EGRES).
+		 *
 		 * Permission to use, modify and distribute this software is granted
 		 * provided that this copyright notice appears in all copies. For
 		 * precise terms see the accompanying LICENSE file.
+		 *
 		 * This software is provided "AS IS" with no warranty of any kind,
 		 * express or implied, and with no claim as to its suitability for any
 		 * purpose.
+		 *
 		 */
 		///\ingroup graph_concepts
 		///\file
 		///\brief The concept of graph components.
 		#ifndef LEMON_CONCEPT_GRAPH_COMPONENTS_H
 		#define LEMON_CONCEPT_GRAPH_COMPONENTS_H
 		#include <lemon/bits/invalid.h>
 		#include <lemon/concepts/maps.h>
 		#include <lemon/bits/alteration_notifier.h>
 		namespace lemon {
 		  namespace concepts {
 		    /// \brief Skeleton class for graph Node and Arc types
 		    ///
 		    /// This class describes the interface of Node and Arc (and Edge
 		    /// in undirected graphs) subtypes of graph types.
 		    ///
 		    /// \note This class is a template class so that we can use it to
 		    /// create graph skeleton classes. The reason for this is than Node
 		    /// and Arc types should \em not derive from the same base class.
 		    /// For Node you should instantiate it with character 'n' and for Arc
 		    /// with 'a'.
 		#ifndef DOXYGEN
 		    template <char _selector = '0'>
 		#endif
 		    class GraphItem {
 		    public:
 		      /// \brief Default constructor.
 		      ///
 		      /// \warning The default constructor is not required to set
 		      /// the item to some well-defined value. So you should consider it
 		      /// as uninitialized.
 		      GraphItem() {}
 		      /// \brief Copy constructor.
 		      ///
 		      /// Copy constructor.
 		      ///
 		      GraphItem(const GraphItem &) {}
 		      /// \brief Invalid constructor \& conversion.
 		      ///
 		      /// This constructor initializes the item to be invalid.
 		      /// \sa Invalid for more details.
 		      GraphItem(Invalid) {}
 		      /// \brief Assign operator for nodes.
 		      ///
 		      /// The nodes are assignable.
 		      ///
 		      GraphItem& operator=(GraphItem const&) { return *this; }
 		      /// \brief Equality operator.
 		      ///
 		      /// Two iterators are equal if and only if they represents the
 		      /// same node in the graph or both are invalid.
 		      bool operator==(GraphItem) const { return false; }
 		      /// \brief Inequality operator.
 		      ///
 		      /// \sa operator==(const Node& n)
 		      ///
 		      bool operator!=(GraphItem) const { return false; }
 		      /// \brief Artificial ordering operator.
 		      ///
 		      /// To allow the use of graph descriptors as key type in std::map or
 		      /// similar associative container we require this.
 		      ///
 		      /// \note This operator only have to define some strict ordering of
 		      /// the items; this order has nothing to do with the iteration
 		      /// ordering of the items.
 		      bool operator<(GraphItem) const { return false; }
 		      template<typename _GraphItem>
 		      struct Constraints {
 			void constraints() {
 			  _GraphItem i1;
 			  _GraphItem i2 = i1;
 			  _GraphItem i3 = INVALID;
 			  i1 = i2 = i3;
 			  bool b;
 			  //	  b = (ia == ib) && (ia != ib) && (ia < ib);
 			  b = (ia == ib) && (ia != ib);
 			  b = (ia == INVALID) && (ib != INVALID);
 		          b = (ia < ib);
+			}
 			const _GraphItem &ia;
 			const _GraphItem &ib;
 		      };
 		    };
 		    /// \brief An empty base directed graph class.
 		    ///
 		    /// This class provides the minimal set of features needed for a
 		    /// directed graph structure. All digraph concepts have to be
 		    /// conform to this base directed graph. It just provides types
 		    /// for nodes and arcs and functions to get the source and the
 		    /// target of the arcs.
 		    class BaseDigraphComponent {
 		    public:
 		      typedef BaseDigraphComponent Digraph;
 		      /// \brief Node class of the digraph.
 		      ///
 		      /// This class represents the Nodes of the digraph.
 		      ///
 		      typedef GraphItem<'n'> Node;
 		      /// \brief Arc class of the digraph.
 		      ///
 		      /// This class represents the Arcs of the digraph.
 		      ///
 		      typedef GraphItem<'e'> Arc;
 		      /// \brief Gives back the target node of an arc.
 		      ///
 		      /// Gives back the target node of an arc.
 		      ///
 		      Node target(const Arc&) const { return INVALID;}
 		      /// \brief Gives back the source node of an arc.
 		      ///
 		      /// Gives back the source node of an arc.
 		      ///
 		      Node source(const Arc&) const { return INVALID;}
 		      /// \brief Gives back the opposite node on the given arc.
 		      ///
 		      /// Gives back the opposite node on the given arc.
 		      Node oppositeNode(const Node&, const Arc&) const {
 		        return INVALID;
+		      }
 		      template <typename _Digraph>
 		      struct Constraints {
 			typedef typename _Digraph::Node Node;
 			typedef typename _Digraph::Arc Arc;
 			void constraints() {
 			  checkConcept<GraphItem<'n'>, Node>();
 			  checkConcept<GraphItem<'a'>, Arc>();
+			  {
 			    Node n;
 			    Arc e(INVALID);
 			    n = digraph.source(e);
 			    n = digraph.target(e);
 		            n = digraph.oppositeNode(n, e);
+			  }
+			}
 			const _Digraph& digraph;
 		      };
 		    };
 		    /// \brief An empty base undirected graph class.
 		    ///
 		    /// This class provides the minimal set of features needed for an
 		    /// undirected graph structure. All undirected graph concepts have
 		    /// to be conform to this base graph. It just provides types for
 		    /// nodes, arcs and edges and functions to get the
 		    /// source and the target of the arcs and edges,
 		    /// conversion from arcs to edges and function to get
 		    /// both direction of the edges.
 		    class BaseGraphComponent : public BaseDigraphComponent {
 		    public:
 		      typedef BaseDigraphComponent::Node Node;
 		      typedef BaseDigraphComponent::Arc Arc;
 		      /// \brief Undirected arc class of the graph.
 		      ///
 		      /// This class represents the edges of the graph.
 		      /// The undirected graphs can be used as a directed graph which
 		      /// for each arc contains the opposite arc too so the graph is
 		      /// bidirected. The edge represents two opposite
 		      /// directed arcs.
 		      class Edge : public GraphItem<'u'> {
 		      public:
 		        typedef GraphItem<'u'> Parent;
 		        /// \brief Default constructor.
 		        ///
 		        /// \warning The default constructor is not required to set
 		        /// the item to some well-defined value. So you should consider it
 		        /// as uninitialized.
 		        Edge() {}
 		        /// \brief Copy constructor.
 		        ///
 		        /// Copy constructor.
 		        ///
 		        Edge(const Edge &) : Parent() {}
 		        /// \brief Invalid constructor \& conversion.
 		        ///
 		        /// This constructor initializes the item to be invalid.
 		        /// \sa Invalid for more details.
 		        Edge(Invalid) {}
 		        /// \brief Converter from arc to edge.
 		        ///
 		        /// Besides the core graph item functionality each arc should
 		        /// be convertible to the represented edge.
 		        Edge(const Arc&) {}
 		        /// \brief Assign arc to edge.
 		        ///
 		        /// Besides the core graph item functionality each arc should
 		        /// be convertible to the represented edge.
 		        Edge& operator=(const Arc&) { return *this; }
 		      };
 		      /// \brief Returns the direction of the arc.
 		      ///
 		      /// Returns the direction of the arc. Each arc represents an
 		      /// edge with a direction. It gives back the
 		      /// direction.
 		      bool direction(const Arc&) const { return true; }
 		      /// \brief Returns the directed arc.
 		      ///
 		      /// Returns the directed arc from its direction and the
 		      /// represented edge.
 		      Arc direct(const Edge&, bool) const { return INVALID;}
 		      /// \brief Returns the directed arc.
 		      ///
 		      /// Returns the directed arc from its source and the
 		      /// represented edge.
 		      Arc direct(const Edge&, const Node&) const { return INVALID;}
 		      /// \brief Returns the opposite arc.
 		      ///
 		      /// Returns the opposite arc. It is the arc representing the
 		      /// same edge and has opposite direction.
 		      Arc oppositeArc(const Arc&) const { return INVALID;}
 		      /// \brief Gives back one ending of an edge.
 		      ///
 		      /// Gives back one ending of an edge.
 		      Node u(const Edge&) const { return INVALID;}
 		      /// \brief Gives back the other ending of an edge.
 		      ///
 		      /// Gives back the other ending of an edge.
 		      Node v(const Edge&) const { return INVALID;}
 		      template <typename _Graph>
 		      struct Constraints {
 			typedef typename _Graph::Node Node;
 			typedef typename _Graph::Arc Arc;
 			typedef typename _Graph::Edge Edge;
 			void constraints() {
 		          checkConcept<BaseDigraphComponent, _Graph>();
 			  checkConcept<GraphItem<'u'>, Edge>();
+			  {
 			    Node n;
 			    Edge ue(INVALID);
 		            Arc e;
 			    n = graph.u(ue);
 			    n = graph.v(ue);
 		            e = graph.direct(ue, true);
 		            e = graph.direct(ue, n);
 		            e = graph.oppositeArc(e);
 		            ue = e;
 		            bool d = graph.direction(e);
 		            ignore_unused_variable_warning(d);
+			  }
+			}
 			const _Graph& graph;
 		      };
 		    };
 		    /// \brief An empty idable base digraph class.
 		    ///
 		    /// This class provides beside the core digraph features
 		    /// core id functions for the digraph structure.
 		    /// The most of the base digraphs should be conform to this concept.
 		    /// The id's are unique and immutable.
 		    template <typename _Base = BaseDigraphComponent>
 		    class IDableDigraphComponent : public _Base {
 		    public:
 		      typedef _Base Base;
 		      typedef typename Base::Node Node;
 		      typedef typename Base::Arc Arc;
 		      /// \brief Gives back an unique integer id for the Node.
 		      ///
 		      /// Gives back an unique integer id for the Node.
 		      ///
 		      int id(const Node&) const { return -1;}
 		      /// \brief Gives back the node by the unique id.
 		      ///
 		      /// Gives back the node by the unique id.
 		      /// If the digraph does not contain node with the given id
 		      /// then the result of the function is undetermined.
 		      Node nodeFromId(int) const { return INVALID;}
 		      /// \brief Gives back an unique integer id for the Arc.
 		      ///
 		      /// Gives back an unique integer id for the Arc.
 		      ///
 		      int id(const Arc&) const { return -1;}
 		      /// \brief Gives back the arc by the unique id.
 		      ///
 		      /// Gives back the arc by the unique id.
 		      /// If the digraph does not contain arc with the given id
 		      /// then the result of the function is undetermined.
 		      Arc arcFromId(int) const { return INVALID;}
 		      /// \brief Gives back an integer greater or equal to the maximum
 		      /// Node id.
 		      ///
 		      /// Gives back an integer greater or equal to the maximum Node
 		      /// id.
 		      int maxNodeId() const { return -1;}
 		      /// \brief Gives back an integer greater or equal to the maximum
 		      /// Arc id.
 		      ///
 		      /// Gives back an integer greater or equal to the maximum Arc
 		      /// id.
 		      int maxArcId() const { return -1;}
 		      template <typename _Digraph>
 		      struct Constraints {
 			void constraints() {
 			  checkConcept<Base, _Digraph >();
 			  typename _Digraph::Node node;
 			  int nid = digraph.id(node);
 			  nid = digraph.id(node);
 			  node = digraph.nodeFromId(nid);
 			  typename _Digraph::Arc arc;
 			  int eid = digraph.id(arc);
 			  eid = digraph.id(arc);
 			  arc = digraph.arcFromId(eid);
 			  nid = digraph.maxNodeId();
 			  ignore_unused_variable_warning(nid);
 			  eid = digraph.maxArcId();
 			  ignore_unused_variable_warning(eid);
+			}
 			const _Digraph& digraph;
 		      };
 		    };
 		    /// \brief An empty idable base undirected graph class.
 		    ///
 		    /// This class provides beside the core undirected graph features
 		    /// core id functions for the undirected graph structure.  The
 		    /// most of the base undirected graphs should be conform to this
 		    /// concept.  The id's are unique and immutable.
 		    template <typename _Base = BaseGraphComponent>
 		    class IDableGraphComponent : public IDableDigraphComponent<_Base> {
 		    public:
 		      typedef _Base Base;
 		      typedef typename Base::Edge Edge;
 		      using IDableDigraphComponent<_Base>::id;
 		      /// \brief Gives back an unique integer id for the Edge.
 		      ///
 		      /// Gives back an unique integer id for the Edge.
 		      ///
 		      int id(const Edge&) const { return -1;}
 		      /// \brief Gives back the edge by the unique id.
 		      ///
 		      /// Gives back the edge by the unique id.  If the
 		      /// graph does not contain arc with the given id then the
 		      /// result of the function is undetermined.
 		      Edge edgeFromId(int) const { return INVALID;}
 		      /// \brief Gives back an integer greater or equal to the maximum
 		      /// Edge id.
 		      ///
 		      /// Gives back an integer greater or equal to the maximum Edge
 		      /// id.
 		      int maxEdgeId() const { return -1;}
 		      template <typename _Graph>
 		      struct Constraints {
 			void constraints() {
 			  checkConcept<Base, _Graph >();
 			  checkConcept<IDableDigraphComponent<Base>, _Graph >();
 			  typename _Graph::Edge edge;
 			  int ueid = graph.id(edge);
 			  ueid = graph.id(edge);
 			  edge = graph.edgeFromId(ueid);
 			  ueid = graph.maxEdgeId();
 			  ignore_unused_variable_warning(ueid);
+			}
 			const _Graph& graph;
 		      };
 		    };
 		    /// \brief Skeleton class for graph NodeIt and ArcIt
 		    ///
 		    /// Skeleton class for graph NodeIt and ArcIt.
 		    ///
 		    template <typename _Graph, typename _Item>
 		    class GraphItemIt : public _Item {
 		    public:
 		      /// \brief Default constructor.
 		      ///
 		      /// @warning The default constructor sets the iterator
 		      /// to an undefined value.
 		      GraphItemIt() {}
 		      /// \brief Copy constructor.
 		      ///
 		      /// Copy constructor.
 		      ///
 		      GraphItemIt(const GraphItemIt& ) {}
 		      /// \brief Sets the iterator to the first item.
 		      ///
 		      /// Sets the iterator to the first item of \c the graph.
 		      ///
 		      explicit GraphItemIt(const _Graph&) {}
 		      /// \brief Invalid constructor \& conversion.
 		      ///
 		      /// This constructor initializes the item to be invalid.
 		      /// \sa Invalid for more details.
 		      GraphItemIt(Invalid) {}
 		      /// \brief Assign operator for items.
 		      ///
 		      /// The items are assignable.
 		      ///
 		      GraphItemIt& operator=(const GraphItemIt&) { return *this; }
 		      /// \brief Next item.
 		      ///
 		      /// Assign the iterator to the next item.
 		      ///
 		      GraphItemIt& operator++() { return *this; }
 		      /// \brief Equality operator
 		      ///
 		      /// Two iterators are equal if and only if they point to the
 		      /// same object or both are invalid.
 		      bool operator==(const GraphItemIt&) const { return true;}
 		      /// \brief Inequality operator
 		      ///
 		      /// \sa operator==(Node n)
 		      ///
 		      bool operator!=(const GraphItemIt&) const { return true;}
 		      template<typename _GraphItemIt>
 		      struct Constraints {
 			void constraints() {
 			  _GraphItemIt it1(g);
 			  _GraphItemIt it2;
 			  it2 = ++it1;
 			  ++it2 = it1;
 			  ++(++it1);
 			  _Item bi = it1;
 			  bi = it2;
+			}
 			_Graph& g;
 		      };
 		    };
 		    /// \brief Skeleton class for graph InArcIt and OutArcIt
 		    ///
 		    /// \note Because InArcIt and OutArcIt may not inherit from the same
 		    /// base class, the _selector is a additional template parameter. For
 		    /// InArcIt you should instantiate it with character 'i' and for
 		    /// OutArcIt with 'o'.
 		    template <typename _Graph,
 			      typename _Item = typename _Graph::Arc,
 		              typename _Base = typename _Graph::Node,
 			      char _selector = '0'>
 		    class GraphIncIt : public _Item {
 		    public:
 		      /// \brief Default constructor.
 		      ///
 		      /// @warning The default constructor sets the iterator
 		      /// to an undefined value.
 		      GraphIncIt() {}
 		      /// \brief Copy constructor.
 		      ///
 		      /// Copy constructor.
 		      ///
 		      GraphIncIt(GraphIncIt const& gi) : _Item(gi) {}
 		      /// \brief Sets the iterator to the first arc incoming into or outgoing
 		      /// from the node.
 		      ///
 		      /// Sets the iterator to the first arc incoming into or outgoing
 		      /// from the node.
 		      ///
 		      explicit GraphIncIt(const _Graph&, const _Base&) {}
 		      /// \brief Invalid constructor \& conversion.
 		      ///
 		      /// This constructor initializes the item to be invalid.
 		      /// \sa Invalid for more details.
 		      GraphIncIt(Invalid) {}
 		      /// \brief Assign operator for iterators.
 		      ///
 		      /// The iterators are assignable.
 		      ///
 		      GraphIncIt& operator=(GraphIncIt const&) { return *this; }
 		      /// \brief Next item.
 		      ///
 		      /// Assign the iterator to the next item.
 		      ///
 		      GraphIncIt& operator++() { return *this; }
 		      /// \brief Equality operator
 		      ///
 		      /// Two iterators are equal if and only if they point to the
 		      /// same object or both are invalid.
 		      bool operator==(const GraphIncIt&) const { return true;}
 		      /// \brief Inequality operator
 		      ///
 		      /// \sa operator==(Node n)
 		      ///
 		      bool operator!=(const GraphIncIt&) const { return true;}
 		      template <typename _GraphIncIt>
 		      struct Constraints {
 			void constraints() {
 			  checkConcept<GraphItem<_selector>, _GraphIncIt>();
 			  _GraphIncIt it1(graph, node);
 			  _GraphIncIt it2;
 			  it2 = ++it1;
 			  ++it2 = it1;
 			  ++(++it1);
 			  _Item e = it1;
 			  e = it2;
+			}
 			_Item arc;
 			_Base node;
 			_Graph graph;
 			_GraphIncIt it;
 		      };
 		    };
 		    /// \brief An empty iterable digraph class.
 		    ///
 		    /// This class provides beside the core digraph features
 		    /// iterator based iterable interface for the digraph structure.
 		    /// This concept is part of the Digraph concept.
 		    template <typename _Base = BaseDigraphComponent>
 		    class IterableDigraphComponent : public _Base {
 		    public:
 		      typedef _Base Base;
 		      typedef typename Base::Node Node;
 		      typedef typename Base::Arc Arc;
 		      typedef IterableDigraphComponent Digraph;
 		      /// \name Base iteration
 		      ///
 		      /// This interface provides functions for iteration on digraph items
 		      ///
 		      /// @{
 		      /// \brief Gives back the first node in the iterating order.
 		      ///
 		      /// Gives back the first node in the iterating order.
 		      ///
 		      void first(Node&) const {}
 		      /// \brief Gives back the next node in the iterating order.
 		      ///
 		      /// Gives back the next node in the iterating order.
 		      ///
 		      void next(Node&) const {}
 		      /// \brief Gives back the first arc in the iterating order.
 		      ///
 		      /// Gives back the first arc in the iterating order.
 		      ///
 		      void first(Arc&) const {}
 		      /// \brief Gives back the next arc in the iterating order.
 		      ///
 		      /// Gives back the next arc in the iterating order.
 		      ///
 		      void next(Arc&) const {}
 		      /// \brief Gives back the first of the arcs point to the given
 		      /// node.
 		      ///
 		      /// Gives back the first of the arcs point to the given node.
 		      ///
 		      void firstIn(Arc&, const Node&) const {}
 		      /// \brief Gives back the next of the arcs points to the given
 		      /// node.
 		      ///
 		      /// Gives back the next of the arcs points to the given node.
 		      ///
 		      void nextIn(Arc&) const {}
 		      /// \brief Gives back the first of the arcs start from the
 		      /// given node.
 		      ///
 		      /// Gives back the first of the arcs start from the given node.
 		      ///
 		      void firstOut(Arc&, const Node&) const {}
 		      /// \brief Gives back the next of the arcs start from the given
 		      /// node.
 		      ///
 		      /// Gives back the next of the arcs start from the given node.
 		      ///
 		      void nextOut(Arc&) const {}
 		      /// @}
 		      /// \name Class based iteration
 		      ///
 		      /// This interface provides functions for iteration on digraph items
 		      ///
 		      /// @{
 		      /// \brief This iterator goes through each node.
 		      ///
 		      /// This iterator goes through each node.
 		      ///
 		      typedef GraphItemIt<Digraph, Node> NodeIt;
 		      /// \brief This iterator goes through each node.
 		      ///
 		      /// This iterator goes through each node.
 		      ///
 		      typedef GraphItemIt<Digraph, Arc> ArcIt;
 		      /// \brief This iterator goes trough the incoming arcs of a node.
 		      ///
 		      /// This iterator goes trough the \e inccoming arcs of a certain node
 		      /// of a digraph.
 		      typedef GraphIncIt<Digraph, Arc, Node, 'i'> InArcIt;
 		      /// \brief This iterator goes trough the outgoing arcs of a node.
 		      ///
 		      /// This iterator goes trough the \e outgoing arcs of a certain node
 		      /// of a digraph.
 		      typedef GraphIncIt<Digraph, Arc, Node, 'o'> OutArcIt;
 		      /// \brief The base node of the iterator.
 		      ///
 		      /// Gives back the base node of the iterator.
 		      /// It is always the target of the pointed arc.
 		      Node baseNode(const InArcIt&) const { return INVALID; }
 		      /// \brief The running node of the iterator.
 		      ///
 		      /// Gives back the running node of the iterator.
 		      /// It is always the source of the pointed arc.
 		      Node runningNode(const InArcIt&) const { return INVALID; }
 		      /// \brief The base node of the iterator.
 		      ///
 		      /// Gives back the base node of the iterator.
 		      /// It is always the source of the pointed arc.
 		      Node baseNode(const OutArcIt&) const { return INVALID; }
 		      /// \brief The running node of the iterator.
 		      ///
 		      /// Gives back the running node of the iterator.
 		      /// It is always the target of the pointed arc.
 		      Node runningNode(const OutArcIt&) const { return INVALID; }
 		      /// @}
 		      template <typename _Digraph>
 		      struct Constraints {
 			void constraints() {
 			  checkConcept<Base, _Digraph>();
+		          {
 		            typename _Digraph::Node node(INVALID);
 		            typename _Digraph::Arc arc(INVALID);
+		            {
 		              digraph.first(node);
 		              digraph.next(node);
+		            }
+		            {
 		              digraph.first(arc);
 		              digraph.next(arc);
+		            }
+		            {
 		              digraph.firstIn(arc, node);
 		              digraph.nextIn(arc);
+		            }
+		            {
 		              digraph.firstOut(arc, node);
 		              digraph.nextOut(arc);
+		            }
+		          }
+		          {
 		            checkConcept<GraphItemIt<_Digraph, typename _Digraph::Arc>,
 		              typename _Digraph::ArcIt >();
 		            checkConcept<GraphItemIt<_Digraph, typename _Digraph::Node>,
 		              typename _Digraph::NodeIt >();
 		            checkConcept<GraphIncIt<_Digraph, typename _Digraph::Arc,
 		              typename _Digraph::Node, 'i'>, typename _Digraph::InArcIt>();
 		            checkConcept<GraphIncIt<_Digraph, typename _Digraph::Arc,
 		              typename _Digraph::Node, 'o'>, typename _Digraph::OutArcIt>();
 		            typename _Digraph::Node n;
 		            typename _Digraph::InArcIt ieit(INVALID);
 		            typename _Digraph::OutArcIt oeit(INVALID);
 		            n = digraph.baseNode(ieit);
 		            n = digraph.runningNode(ieit);
 		            n = digraph.baseNode(oeit);
 		            n = digraph.runningNode(oeit);
 		            ignore_unused_variable_warning(n);
+		          }
+		        }
 			const _Digraph& digraph;
 		      };
 		    };
 		    /// \brief An empty iterable undirected graph class.
 		    ///
 		    /// This class provides beside the core graph features iterator
 		    /// based iterable interface for the undirected graph structure.
 		    /// This concept is part of the Graph concept.
 		    template <typename _Base = BaseGraphComponent>
 		    class IterableGraphComponent : public IterableDigraphComponent<_Base> {
 		    public:
 		      typedef _Base Base;
 		      typedef typename Base::Node Node;
 		      typedef typename Base::Arc Arc;
 		      typedef typename Base::Edge Edge;
 		      typedef IterableGraphComponent Graph;
 		      /// \name Base iteration
 		      ///
 		      /// This interface provides functions for iteration on graph items
 		      /// @{
 		      using IterableDigraphComponent<_Base>::first;
 		      using IterableDigraphComponent<_Base>::next;
 		      /// \brief Gives back the first edge in the iterating
 		      /// order.
 		      ///
 		      /// Gives back the first edge in the iterating order.
 		      ///
 		      void first(Edge&) const {}
 		      /// \brief Gives back the next edge in the iterating
 		      /// order.
 		      ///
 		      /// Gives back the next edge in the iterating order.
 		      ///
 		      void next(Edge&) const {}
 		      /// \brief Gives back the first of the edges from the
 		      /// given node.
 		      ///
 		      /// Gives back the first of the edges from the given
 		      /// node. The bool parameter gives back that direction which
 		      /// gives a good direction of the edge so the source of the
 		      /// directed arc is the given node.
 		      void firstInc(Edge&, bool&, const Node&) const {}
 		      /// \brief Gives back the next of the edges from the
 		      /// given node.
 		      ///
 		      /// Gives back the next of the edges from the given
 		      /// node. The bool parameter should be used as the \c firstInc()
 		      /// use it.
 		      void nextInc(Edge&, bool&) const {}
 		      using IterableDigraphComponent<_Base>::baseNode;
 		      using IterableDigraphComponent<_Base>::runningNode;
 		      /// @}
 		      /// \name Class based iteration
 		      ///
 		      /// This interface provides functions for iteration on graph items
 		      ///
 		      /// @{
 		      /// \brief This iterator goes through each node.
 		      ///
 		      /// This iterator goes through each node.
 		      typedef GraphItemIt<Graph, Edge> EdgeIt;
 		      /// \brief This iterator goes trough the incident arcs of a
 		      /// node.
 		      ///
 		      /// This iterator goes trough the incident arcs of a certain
 		      /// node of a graph.
 		      typedef GraphIncIt<Graph, Edge, Node, 'u'> IncArcIt;
 		      /// \brief The base node of the iterator.
 		      ///
 		      /// Gives back the base node of the iterator.
 		      Node baseNode(const IncArcIt&) const { return INVALID; }
 		      /// \brief The running node of the iterator.
 		      ///
 		      /// Gives back the running node of the iterator.
 		      Node runningNode(const IncArcIt&) const { return INVALID; }
 		      /// @}
 		      template <typename _Graph>
 		      struct Constraints {
 			void constraints() {
 			  checkConcept<IterableDigraphComponent<Base>, _Graph>();
+		          {
 		            typename _Graph::Node node(INVALID);
 		            typename _Graph::Edge edge(INVALID);
 		            bool dir;
+		            {
 		              graph.first(edge);
 		              graph.next(edge);
+		            }
+		            {
 		              graph.firstInc(edge, dir, node);
 		              graph.nextInc(edge, dir);
+		            }
+		          }
+		          {
 		            checkConcept<GraphItemIt<_Graph, typename _Graph::Edge>,
 		              typename _Graph::EdgeIt >();
 		            checkConcept<GraphIncIt<_Graph, typename _Graph::Edge,
 		              typename _Graph::Node, 'u'>, typename _Graph::IncArcIt>();
 		            typename _Graph::Node n;
 		            typename _Graph::IncArcIt ueit(INVALID);
 		            n = graph.baseNode(ueit);
 		            n = graph.runningNode(ueit);
+		          }
+		        }
 			const _Graph& graph;
 		      };
 		    };
 		    /// \brief An empty alteration notifier digraph class.
 		    ///
 		    /// This class provides beside the core digraph features alteration
 		    /// notifier interface for the digraph structure.  This implements
 		    /// an observer-notifier pattern for each digraph item. More
 		    /// obsevers can be registered into the notifier and whenever an
 		    /// alteration occured in the digraph all the observers will
 		    /// notified about it.
 		    template <typename _Base = BaseDigraphComponent>
 		    class AlterableDigraphComponent : public _Base {
 		    public:
 		      typedef _Base Base;
 		      typedef typename Base::Node Node;
 		      typedef typename Base::Arc Arc;
 		      /// The node observer registry.
 		      typedef AlterationNotifier<AlterableDigraphComponent, Node>
 		      NodeNotifier;
 		      /// The arc observer registry.
 		      typedef AlterationNotifier<AlterableDigraphComponent, Arc>
 		      ArcNotifier;
 		      /// \brief Gives back the node alteration notifier.
 		      ///
 		      /// Gives back the node alteration notifier.
 		      NodeNotifier& notifier(Node) const {
 			return NodeNotifier();
+		      }
 		      /// \brief Gives back the arc alteration notifier.
 		      ///
 		      /// Gives back the arc alteration notifier.
 		      ArcNotifier& notifier(Arc) const {
 			return ArcNotifier();
+		      }
 		      template <typename _Digraph>
 		      struct Constraints {
 			void constraints() {
 			  checkConcept<Base, _Digraph>();
 		          typename _Digraph::NodeNotifier& nn
 		            = digraph.notifier(typename _Digraph::Node());
 		          typename _Digraph::ArcNotifier& en
 		            = digraph.notifier(typename _Digraph::Arc());
 		          ignore_unused_variable_warning(nn);
 		          ignore_unused_variable_warning(en);
+			}
 			const _Digraph& digraph;
 		      };
 		    };
 		    /// \brief An empty alteration notifier undirected graph class.
 		    ///
 		    /// This class provides beside the core graph features alteration
 		    /// notifier interface for the graph structure.  This implements
 		    /// an observer-notifier pattern for each graph item. More
 		    /// obsevers can be registered into the notifier and whenever an
 		    /// alteration occured in the graph all the observers will
 		    /// notified about it.
 		    template <typename _Base = BaseGraphComponent>
 		    class AlterableGraphComponent : public AlterableDigraphComponent<_Base> {
 		    public:
 		      typedef _Base Base;
 		      typedef typename Base::Edge Edge;
 		      /// The arc observer registry.
 		      typedef AlterationNotifier<AlterableGraphComponent, Edge>
 		      EdgeNotifier;
 		      /// \brief Gives back the arc alteration notifier.
 		      ///
 		      /// Gives back the arc alteration notifier.
 		      EdgeNotifier& notifier(Edge) const {
 			return EdgeNotifier();
+		      }
 		      template <typename _Graph>
 		      struct Constraints {
 			void constraints() {
 			  checkConcept<AlterableGraphComponent<Base>, _Graph>();
 		          typename _Graph::EdgeNotifier& uen
 		            = graph.notifier(typename _Graph::Edge());
 		          ignore_unused_variable_warning(uen);
+			}
 			const _Graph& graph;
 		      };
 		    };
 		    /// \brief Class describing the concept of graph maps
 		    ///
 		    /// This class describes the common interface of the graph maps
 		    /// (NodeMap, ArcMap), that is \ref maps-page "maps" which can be used to
 		    /// associate data to graph descriptors (nodes or arcs).
 		    template <typename _Graph, typename _Item, typename _Value>
 		    class GraphMap : public ReadWriteMap<_Item, _Value> {
 		    public:
 		      typedef ReadWriteMap<_Item, _Value> Parent;
 		      /// The graph type of the map.
 		      typedef _Graph Graph;
 		      /// The key type of the map.
 		      typedef _Item Key;
 		      /// The value type of the map.
 		      typedef _Value Value;
 		      /// \brief Construct a new map.
 		      ///
 		      /// Construct a new map for the graph.
 		      explicit GraphMap(const Graph&) {}
 		      /// \brief Construct a new map with default value.
 		      ///
 		      /// Construct a new map for the graph and initalise the values.
 		      GraphMap(const Graph&, const Value&) {}
 		      /// \brief Copy constructor.
 		      ///
 		      /// Copy Constructor.
 		      GraphMap(const GraphMap&) : Parent() {}
 		      /// \brief Assign operator.
 		      ///
 		      /// Assign operator. It does not mofify the underlying graph,
 		      /// it just iterates on the current item set and set the  map
 		      /// with the value returned by the assigned map.
 		      template <typename CMap>
 		      GraphMap& operator=(const CMap&) {
 		        checkConcept<ReadMap<Key, Value>, CMap>();
 		        return *this;
+		      }
 		      template<typename _Map>
 		      struct Constraints {
 			void constraints() {
 			  checkConcept<ReadWriteMap<Key, Value>, _Map >();
 			  // Construction with a graph parameter
 			  _Map a(g);
 			  // Constructor with a graph and a default value parameter
 			  _Map a2(g,t);
 			  // Copy constructor.
 			  _Map b(c);
 		          ReadMap<Key, Value> cmap;
 		          b = cmap;
 			  ignore_unused_variable_warning(a2);
 			  ignore_unused_variable_warning(b);
+			}
 			const _Map &c;
 			const Graph &g;
 			const typename GraphMap::Value &t;
 		      };
 		    };
 		    /// \brief An empty mappable digraph class.
 		    ///
 		    /// This class provides beside the core digraph features
 		    /// map interface for the digraph structure.
 		    /// This concept is part of the Digraph concept.
 		    template <typename _Base = BaseDigraphComponent>
 		    class MappableDigraphComponent : public _Base  {
 		    public:
 		      typedef _Base Base;
 		      typedef typename Base::Node Node;
 		      typedef typename Base::Arc Arc;
 		      typedef MappableDigraphComponent Digraph;
 		      /// \brief ReadWrite map of the nodes.
 		      ///
 		      /// ReadWrite map of the nodes.
 		      ///
 		      template <typename _Value>
 		      class NodeMap : public GraphMap<Digraph, Node, _Value> {
 		      public:
 		        typedef GraphMap<MappableDigraphComponent, Node, _Value> Parent;
 			/// \brief Construct a new map.
 			///
 			/// Construct a new map for the digraph.
 			explicit NodeMap(const MappableDigraphComponent& digraph)
 		          : Parent(digraph) {}
 			/// \brief Construct a new map with default value.
 			///
 			/// Construct a new map for the digraph and initalise the values.
 			NodeMap(const MappableDigraphComponent& digraph, const _Value& value)
 		          : Parent(digraph, value) {}
 			/// \brief Copy constructor.
 			///
 			/// Copy Constructor.
 			NodeMap(const NodeMap& nm) : Parent(nm) {}
 			/// \brief Assign operator.
 			///
 			/// Assign operator.
 		        template <typename CMap>
 		        NodeMap& operator=(const CMap&) {
 		          checkConcept<ReadMap<Node, _Value>, CMap>();
 		          return *this;
+		        }
 		      };
 		      /// \brief ReadWrite map of the arcs.
 		      ///
 		      /// ReadWrite map of the arcs.
 		      ///
 		      template <typename _Value>
 		      class ArcMap : public GraphMap<Digraph, Arc, _Value> {
 		      public:
 		        typedef GraphMap<MappableDigraphComponent, Arc, _Value> Parent;
 			/// \brief Construct a new map.
 			///
 			/// Construct a new map for the digraph.
 			explicit ArcMap(const MappableDigraphComponent& digraph)
 		          : Parent(digraph) {}
 			/// \brief Construct a new map with default value.
 			///
 			/// Construct a new map for the digraph and initalise the values.
 			ArcMap(const MappableDigraphComponent& digraph, const _Value& value)
 		          : Parent(digraph, value) {}
 			/// \brief Copy constructor.
 			///
 			/// Copy Constructor.
 			ArcMap(const ArcMap& nm) : Parent(nm) {}
 			/// \brief Assign operator.
 			///
 			/// Assign operator.
 		        template <typename CMap>
 		        ArcMap& operator=(const CMap&) {
 		          checkConcept<ReadMap<Arc, _Value>, CMap>();
 		          return *this;
+		        }
 		      };
 		      template <typename _Digraph>
 		      struct Constraints {
 			struct Dummy {
 			  int value;
 			  Dummy() : value(0) {}
 			  Dummy(int _v) : value(_v) {}
 			};
 			void constraints() {
 			  checkConcept<Base, _Digraph>();
 			  { // int map test
 			    typedef typename _Digraph::template NodeMap<int> IntNodeMap;
 			    checkConcept<GraphMap<_Digraph, typename _Digraph::Node, int>,
 			      IntNodeMap >();
 			  } { // bool map test
 			    typedef typename _Digraph::template NodeMap<bool> BoolNodeMap;
 			    checkConcept<GraphMap<_Digraph, typename _Digraph::Node, bool>,
 			      BoolNodeMap >();
 			  } { // Dummy map test
 			    typedef typename _Digraph::template NodeMap<Dummy> DummyNodeMap;
 			    checkConcept<GraphMap<_Digraph, typename _Digraph::Node, Dummy>,
 			      DummyNodeMap >();
+			  }
 			  { // int map test
 			    typedef typename _Digraph::template ArcMap<int> IntArcMap;
 			    checkConcept<GraphMap<_Digraph, typename _Digraph::Arc, int>,
 			      IntArcMap >();
 			  } { // bool map test
 			    typedef typename _Digraph::template ArcMap<bool> BoolArcMap;
 			    checkConcept<GraphMap<_Digraph, typename _Digraph::Arc, bool>,
 			      BoolArcMap >();
 			  } { // Dummy map test
 			    typedef typename _Digraph::template ArcMap<Dummy> DummyArcMap;
 			    checkConcept<GraphMap<_Digraph, typename _Digraph::Arc, Dummy>,
 			      DummyArcMap >();
+			  }
+			}
 			_Digraph& digraph;
 		      };
 		    };
 		    /// \brief An empty mappable base bipartite graph class.
 		    ///
 		    /// This class provides beside the core graph features
 		    /// map interface for the graph structure.
 		    /// This concept is part of the Graph concept.
 		    template <typename _Base = BaseGraphComponent>
 		    class MappableGraphComponent : public MappableDigraphComponent<_Base>  {
 		    public:
 		      typedef _Base Base;
 		      typedef typename Base::Edge Edge;
 		      typedef MappableGraphComponent Graph;
 		      /// \brief ReadWrite map of the edges.
 		      ///
 		      /// ReadWrite map of the edges.
 		      ///
 		      template <typename _Value>
 		      class EdgeMap : public GraphMap<Graph, Edge, _Value> {
 		      public:
 		        typedef GraphMap<MappableGraphComponent, Edge, _Value> Parent;
 			/// \brief Construct a new map.
 			///
 			/// Construct a new map for the graph.
 			explicit EdgeMap(const MappableGraphComponent& graph)
 		          : Parent(graph) {}
 			/// \brief Construct a new map with default value.
 			///
 			/// Construct a new map for the graph and initalise the values.
 			EdgeMap(const MappableGraphComponent& graph, const _Value& value)
 		          : Parent(graph, value) {}
 			/// \brief Copy constructor.
 			///
 			/// Copy Constructor.
 			EdgeMap(const EdgeMap& nm) : Parent(nm) {}
 			/// \brief Assign operator.
 			///
 			/// Assign operator.
 		        template <typename CMap>
 		        EdgeMap& operator=(const CMap&) {
 		          checkConcept<ReadMap<Edge, _Value>, CMap>();
 		          return *this;
+		        }
 		      };
 		      template <typename _Graph>
 		      struct Constraints {
 			struct Dummy {
 			  int value;
 			  Dummy() : value(0) {}
 			  Dummy(int _v) : value(_v) {}
 			};
 			void constraints() {
 			  checkConcept<MappableGraphComponent<Base>, _Graph>();
 			  { // int map test
 			    typedef typename _Graph::template EdgeMap<int> IntEdgeMap;
 			    checkConcept<GraphMap<_Graph, typename _Graph::Edge, int>,
 			      IntEdgeMap >();
 			  } { // bool map test
 			    typedef typename _Graph::template EdgeMap<bool> BoolEdgeMap;
 			    checkConcept<GraphMap<_Graph, typename _Graph::Edge, bool>,
 			      BoolEdgeMap >();
 			  } { // Dummy map test
 			    typedef typename _Graph::template EdgeMap<Dummy> DummyEdgeMap;
 			    checkConcept<GraphMap<_Graph, typename _Graph::Edge, Dummy>,
 			      DummyEdgeMap >();
+			  }
+			}
 			_Graph& graph;
 		      };
 		    };
 		    /// \brief An empty extendable digraph class.
 		    ///
 		    /// This class provides beside the core digraph features digraph
 		    /// extendable interface for the digraph structure.  The main
 		    /// difference between the base and this interface is that the
 		    /// digraph alterations should handled already on this level.
 		    template <typename _Base = BaseDigraphComponent>
 		    class ExtendableDigraphComponent : public _Base {
 		    public:
 		      typedef _Base Base;
 		      typedef typename _Base::Node Node;
 		      typedef typename _Base::Arc Arc;
 		      /// \brief Adds a new node to the digraph.
 		      ///
 		      /// Adds a new node to the digraph.
 		      ///
 		      Node addNode() {
 			return INVALID;
+		      }
 		      /// \brief Adds a new arc connects the given two nodes.
 		      ///
 		      /// Adds a new arc connects the the given two nodes.
 		      Arc addArc(const Node&, const Node&) {
 			return INVALID;
+		      }
 		      template <typename _Digraph>
 		      struct Constraints {
 			void constraints() {
 		          checkConcept<Base, _Digraph>();
 			  typename _Digraph::Node node_a, node_b;
 			  node_a = digraph.addNode();
 			  node_b = digraph.addNode();
 			  typename _Digraph::Arc arc;
 			  arc = digraph.addArc(node_a, node_b);
+			}
 			_Digraph& digraph;
 		      };
 		    };
 		    /// \brief An empty extendable base undirected graph class.
 		    ///
 		    /// This class provides beside the core undirected graph features
 		    /// core undircted graph extend interface for the graph structure.
 		    /// The main difference between the base and this interface is
 		    /// that the graph alterations should handled already on this
 		    /// level.
 		    template <typename _Base = BaseGraphComponent>
 		    class ExtendableGraphComponent : public _Base {
 		    public:
 		      typedef _Base Base;
 		      typedef typename _Base::Node Node;
 		      typedef typename _Base::Edge Edge;
 		      /// \brief Adds a new node to the graph.
 		      ///
 		      /// Adds a new node to the graph.
 		      ///
 		      Node addNode() {
 			return INVALID;
+		      }
 		      /// \brief Adds a new arc connects the given two nodes.
 		      ///
 		      /// Adds a new arc connects the the given two nodes.
 		      Edge addArc(const Node&, const Node&) {
 			return INVALID;
+		      }
 		      template <typename _Graph>
 		      struct Constraints {
 			void constraints() {
 			  checkConcept<Base, _Graph>();
 			  typename _Graph::Node node_a, node_b;
 			  node_a = graph.addNode();
 			  node_b = graph.addNode();
 			  typename _Graph::Edge edge;
 			  edge = graph.addEdge(node_a, node_b);
+			}
 			_Graph& graph;
 		      };
 		    };
 		    /// \brief An empty erasable digraph class.
 		    ///
 		    /// This class provides beside the core digraph features core erase
 		    /// functions for the digraph structure. The main difference between
 		    /// the base and this interface is that the digraph alterations
 		    /// should handled already on this level.
 		    template <typename _Base = BaseDigraphComponent>
 		    class ErasableDigraphComponent : public _Base {
 		    public:
 		      typedef _Base Base;
 		      typedef typename Base::Node Node;
 		      typedef typename Base::Arc Arc;
 		      /// \brief Erase a node from the digraph.
 		      ///
 		      /// Erase a node from the digraph. This function should
 		      /// erase all arcs connecting to the node.
 		      void erase(const Node&) {}
 		      /// \brief Erase an arc from the digraph.
 		      ///
 		      /// Erase an arc from the digraph.
 		      ///
 		      void erase(const Arc&) {}
 		      template <typename _Digraph>
 		      struct Constraints {
 			void constraints() {
 		          checkConcept<Base, _Digraph>();
 			  typename _Digraph::Node node;
 			  digraph.erase(node);
 			  typename _Digraph::Arc arc;
 			  digraph.erase(arc);
+			}
 			_Digraph& digraph;
 		      };
 		    };
 		    /// \brief An empty erasable base undirected graph class.
 		    ///
 		    /// This class provides beside the core undirected graph features
 		    /// core erase functions for the undirceted graph structure. The
 		    /// main difference between the base and this interface is that
 		    /// the graph alterations should handled already on this level.
 		    template <typename _Base = BaseGraphComponent>
 		    class ErasableGraphComponent : public _Base {
 		    public:
 		      typedef _Base Base;
 		      typedef typename Base::Node Node;
 		      typedef typename Base::Edge Edge;
 		      /// \brief Erase a node from the graph.
 		      ///
 		      /// Erase a node from the graph. This function should erase
 		      /// arcs connecting to the node.
 		      void erase(const Node&) {}
 		      /// \brief Erase an arc from the graph.
 		      ///
 		      /// Erase an arc from the graph.
 		      ///
 		      void erase(const Edge&) {}
 		      template <typename _Graph>
 		      struct Constraints {
 			void constraints() {
 		          checkConcept<Base, _Graph>();
 			  typename _Graph::Node node;
 			  graph.erase(node);
 			  typename _Graph::Arc arc;
 			  graph.erase(arc);
+			}
 			_Graph& graph;
 		      };
 		    };
 		    /// \brief An empty clearable base digraph class.
 		    ///
 		    /// This class provides beside the core digraph features core clear
 		    /// functions for the digraph structure. The main difference between
 		    /// the base and this interface is that the digraph alterations
 		    /// should handled already on this level.
 		    template <typename _Base = BaseDigraphComponent>
 		    class ClearableDigraphComponent : public _Base {
 		    public:
 		      typedef _Base Base;
 		      /// \brief Erase all nodes and arcs from the digraph.
 		      ///
 		      /// Erase all nodes and arcs from the digraph.
 		      ///
 		      void clear() {}
 		      template <typename _Digraph>
 		      struct Constraints {
 			void constraints() {
 		          checkConcept<Base, _Digraph>();
 			  digraph.clear();
+			}
 			_Digraph digraph;
 		      };
 		    };
 		    /// \brief An empty clearable base undirected graph class.
 		    ///
 		    /// This class provides beside the core undirected graph features
 		    /// core clear functions for the undirected graph structure. The
 		    /// main difference between the base and this interface is that
 		    /// the graph alterations should handled already on this level.
 		    template <typename _Base = BaseGraphComponent>
 		    class ClearableGraphComponent : public ClearableDigraphComponent<_Base> {
 		    public:
 		      typedef _Base Base;
 		      template <typename _Graph>
 		      struct Constraints {
 			void constraints() {
 		          checkConcept<ClearableGraphComponent<Base>, _Graph>();
+			}
 			_Graph graph;
 		      };
 		    };
+		  }
+		}
 		#endif

test/digraph_test.cc

Show inline comments

 		/* -*- C++ -*-
+		 *
 		 * This file is a part of LEMON, a generic C++ optimization library
+		 *
 		 * Copyright (C) 2003-2007
 		 * Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport
 		 * (Egervary Research Group on Combinatorial Optimization, EGRES).
+		 *
 		 * Permission to use, modify and distribute this software is granted
 		 * provided that this copyright notice appears in all copies. For
 		 * precise terms see the accompanying LICENSE file.
+		 *
 		 * This software is provided "AS IS" with no warranty of any kind,
 		 * express or implied, and with no claim as to its suitability for any
 		 * purpose.
+		 *
 		 */
 		#include <iostream>
 		#include <vector>
 		#include <lemon/concepts/digraph.h>
 		#include <lemon/list_graph.h>
 		//#include <lemon/smart_graph.h>
 		//#include <lemon/full_graph.h>
 		//#include <lemon/hypercube_graph.h>
 		#include "test_tools.h"
 		#include "digraph_test.h"
 		#include "map_test.h"
 		using namespace lemon;
 		using namespace lemon::concepts;
 		int main() {
 		  { // checking digraph components
 		    checkConcept<BaseDigraphComponent, BaseDigraphComponent >();
 		    checkConcept<IDableDigraphComponent<>,
 		      IDableDigraphComponent<> >();
 		    checkConcept<IterableDigraphComponent<>,
 		      IterableDigraphComponent<> >();
 		    checkConcept<MappableDigraphComponent<>,
 		      MappableDigraphComponent<> >();
+		  }
 		  { // checking skeleton digraphs
 		    checkConcept<Digraph, Digraph>();
+		  }
 		  { // checking list digraph
 		    checkConcept<Digraph, ListDigraph >();
 		    checkConcept<AlterableDigraphComponent<>, ListDigraph>();
 		    checkConcept<ExtendableDigraphComponent<>, ListDigraph>();
 		    checkConcept<ClearableDigraphComponent<>, ListDigraph>();
 		    checkConcept<ErasableDigraphComponent<>, ListDigraph>();
 		    checkDigraph<ListDigraph>();
 		    checkGraphNodeMap<ListDigraph>();
 		    checkGraphArcMap<ListDigraph>();
+		  }
 		//   { // checking smart digraph
 		//     checkConcept<Digraph, SmartDigraph >();
 		//     checkDigraph<SmartDigraph>();
 		//     checkDigraphNodeMap<SmartDigraph>();
 		//     checkDigraphArcMap<SmartDigraph>();
 		//   }
 		//   { // checking full digraph
 		//     checkConcept<Digraph, FullDigraph >();
 		//   }
 		//   { // checking full digraph
 		//     checkConcept<Digraph, HyperCubeDigraph >();
 		//   }
 		  std::cout << __FILE__ ": All tests passed.\n";
 		  return 0;
+		}

test/digraph_test.h

Show inline comments

 		/* -*- C++ -*-
+		 *
 		 * This file is a part of LEMON, a generic C++ optimization library
+		 *
 		 * Copyright (C) 2003-2007
 		 * Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport
 		 * (Egervary Research Group on Combinatorial Optimization, EGRES).
+		 *
 		 * Permission to use, modify and distribute this software is granted
 		 * provided that this copyright notice appears in all copies. For
 		 * precise terms see the accompanying LICENSE file.
+		 *
 		 * This software is provided "AS IS" with no warranty of any kind,
 		 * express or implied, and with no claim as to its suitability for any
 		 * purpose.
+		 *
 		 */
 		#ifndef LEMON_TEST_GRAPH_TEST_H
 		#define LEMON_TEST_GRAPH_TEST_H
 		//#include <lemon/graph_utils.h>
 		#include "test_tools.h"
 		//! \ingroup misc
 		//! \file
 		//! \brief Some utility and test cases to test digraph classes.
 		namespace lemon {
 		  ///Structure returned by \ref addPetersen().
 		  ///Structure returned by \ref addPetersen().
 		  ///
 		  template<class Digraph>
 		  struct PetStruct
+		  {
 		    ///Vector containing the outer nodes.
 		    std::vector<typename Digraph::Node> outer;
 		    ///Vector containing the inner nodes.
 		    std::vector<typename Digraph::Node> inner;
 		    ///Vector containing the edges of the inner circle.
 		    std::vector<typename Digraph::Arc> incir;
 		    ///Vector containing the edges of the outer circle.
 		    std::vector<typename Digraph::Arc> outcir;
 		    ///Vector containing the chord edges.
 		    std::vector<typename Digraph::Arc> chords;
 		  };
 		  ///Adds a Petersen graph to \c G.
 		  ///Adds a Petersen graph to \c G.
 		  ///\return The nodes and edges of the generated graph.
 		  template<typename Digraph>
 		  PetStruct<Digraph> addPetersen(Digraph &G,int num = 5)
+		  {
 		    PetStruct<Digraph> n;
 		    for(int i=0;i<num;i++) {
 		      n.outer.push_back(G.addNode());
 		      n.inner.push_back(G.addNode());
+		    }
 		    for(int i=0;i<num;i++) {
 		      n.chords.push_back(G.addArc(n.outer[i],n.inner[i]));
 		      n.outcir.push_back(G.addArc(n.outer[i],n.outer[(i+1) % num]));
 		      n.incir.push_back(G.addArc(n.inner[i],n.inner[(i+2) % num]));
+		    }
 		    return n;
+		  }
 		  /// \brief Adds to the digraph the reverse pair of all edges.
 		  ///
 		  /// Adds to the digraph the reverse pair of all edges.
 		  ///
 		  template<class Digraph>
 		  void bidirDigraph(Digraph &G)
+		  {
 		    typedef typename Digraph::Arc Arc;
 		    typedef typename Digraph::ArcIt ArcIt;
 		    std::vector<Arc> ee;
 		    for(ArcIt e(G);e!=INVALID;++e) ee.push_back(e);
 		    for(typename std::vector<Arc>::iterator p=ee.begin();p!=ee.end();p++)
 		      G.addArc(G.target(*p),G.source(*p));
+		  }
 		  /// \brief Checks the bidirectioned Petersen graph.
 		  ///
 		  ///  Checks the bidirectioned Petersen graph.
 		  ///
 		  template<class Digraph>
 		  void checkBidirPetersen(Digraph &G, int num = 5)
+		  {
 		    typedef typename Digraph::Node Node;
 		    typedef typename Digraph::ArcIt ArcIt;
 		    typedef typename Digraph::NodeIt NodeIt;
 		    checkDigraphNodeList(G, 2 * num);
 		    checkDigraphArcList(G, 6 * num);
 		    for(NodeIt n(G);n!=INVALID;++n) {
 		      checkDigraphInArcList(G, n, 3);
 		      checkDigraphOutArcList(G, n, 3);
+		    }
+		  }
 		  template<class Digraph> void checkDigraphNodeList(Digraph &G, int nn)
+		  {
 		    typename Digraph::NodeIt n(G);
 		    for(int i=0;i<nn;i++) {
 		      check(n!=INVALID,"Wrong Node list linking.");
 		      ++n;
+		    }
 		    check(n==INVALID,"Wrong Node list linking.");
+		  }
 		  template<class Digraph>
 		  void checkDigraphArcList(Digraph &G, int nn)
+		  {
 		    typedef typename Digraph::ArcIt ArcIt;
 		    ArcIt e(G);
 		    for(int i=0;i<nn;i++) {
 		      check(e!=INVALID,"Wrong Arc list linking.");
 		      ++e;
+		    }
 		    check(e==INVALID,"Wrong Arc list linking.");
+		  }
 		  template<class Digraph>
 		  void checkDigraphOutArcList(Digraph &G, typename Digraph::Node n, int nn)
+		  {
 		    typename Digraph::OutArcIt e(G,n);
 		    for(int i=0;i<nn;i++) {
 		      check(e!=INVALID,"Wrong OutArc list linking.");
 		      check(n==G.source(e), "Wrong OutArc list linking.");
 		      ++e;
+		    }
 		    check(e==INVALID,"Wrong OutArc list linking.");
+		  }
 		  template<class Digraph> void
 		  checkDigraphInArcList(Digraph &G, typename Digraph::Node n, int nn)
+		  {
 		    typename Digraph::InArcIt e(G,n);
 		    for(int i=0;i<nn;i++) {
 		      check(e!=INVALID,"Wrong InArc list linking.");
 		      check(n==G.target(e), "Wrong InArc list linking.");
 		      ++e;
+		    }
 		    check(e==INVALID,"Wrong InArc list linking.");
+		  }
 		  template <class Digraph>
 		  void checkDigraph() {
 		    const int num = 5;
 		    Digraph G;
 		    addPetersen(G, num);
 		    bidirDigraph(G);
 		    checkBidirPetersen(G, num);
+		  }
 		  template <class Digraph>
 		  void checkDigraphIterators(const Digraph& digraph) {
 		    typedef typename Digraph::Node Node;
 		    typedef typename Digraph::NodeIt NodeIt;
 		    typedef typename Digraph::Arc Arc;
 		    typedef typename Digraph::ArcIt ArcIt;
 		    typedef typename Digraph::InArcIt InArcIt;
 		    typedef typename Digraph::OutArcIt OutArcIt;
 		    //    typedef ConArcIt<Digraph> ConArcIt;
+		  }
 		  ///\file
 		  ///\todo Check target(), source() as well;
 		} //namespace lemon
 		#endif

test/graph_test.cc

Show inline comments

 		/* -*- C++ -*-
+		 *
 		 * This file is a part of LEMON, a generic C++ optimization library
+		 *
 		 * Copyright (C) 2003-2007
 		 * Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport
 		 * (Egervary Research Group on Combinatorial Optimization, EGRES).
+		 *
 		 * Permission to use, modify and distribute this software is granted
 		 * provided that this copyright notice appears in all copies. For
 		 * precise terms see the accompanying LICENSE file.
+		 *
 		 * This software is provided "AS IS" with no warranty of any kind,
 		 * express or implied, and with no claim as to its suitability for any
 		 * purpose.
+		 *
 		 */
 		#include <lemon/concepts/graph.h>
 		#include <lemon/list_graph.h>
 		// #include <lemon/smart_graph.h>
 		// #include <lemon/full_graph.h>
 		// #include <lemon/grid_graph.h>
 		//#include <lemon/graph_utils.h>
 		#include "test_tools.h"
 		using namespace lemon;
 		using namespace lemon::concepts;
 		void check_concepts() {
 		  { // checking digraph components
 		    checkConcept<BaseGraphComponent, BaseGraphComponent >();
 		    checkConcept<IDableGraphComponent<>,
 		      IDableGraphComponent<> >();
 		    checkConcept<IterableGraphComponent<>,
 		      IterableGraphComponent<> >();
 		    checkConcept<MappableGraphComponent<>,
 		      MappableGraphComponent<> >();
+		  }
+		  {
 		    checkConcept<Graph, ListGraph>();
 		//     checkConcept<Graph, SmartGraph>();
 		//     checkConcept<Graph, FullGraph>();
 		//     checkConcept<Graph, Graph>();
 		//     checkConcept<Graph, GridGraph>();
+		  }
+		}
 		template <typename Graph>
 		void check_item_counts(Graph &g, int n, int e) {
 		  int nn = 0;
 		  for (typename Graph::NodeIt it(g); it != INVALID; ++it) {
 		    ++nn;
+		  }
 		  check(nn == n, "Wrong node number.");
 		  //  check(countNodes(g) == n, "Wrong node number.");
 		  int ee = 0;
 		  for (typename Graph::ArcIt it(g); it != INVALID; ++it) {
 		    ++ee;
+		  }
 		  check(ee == 2*e, "Wrong arc number.");
 		  //  check(countArcs(g) == 2*e, "Wrong arc number.");
 		  int uee = 0;
 		  for (typename Graph::EdgeIt it(g); it != INVALID; ++it) {
 		    ++uee;
+		  }
 		  check(uee == e, "Wrong edge number.");
 		  //  check(countEdges(g) == e, "Wrong edge number.");
+		}
 		template <typename Graph>
 		void print_items(Graph &g) {
 		  typedef typename Graph::NodeIt NodeIt;
 		  typedef typename Graph::EdgeIt EdgeIt;
 		  typedef typename Graph::ArcIt ArcIt;
 		  std::cout << "Nodes" << std::endl;
 		  int i=0;
 		  for(NodeIt it(g); it!=INVALID; ++it, ++i) {
 		    std::cout << "  " << i << ": " << g.id(it) << std::endl;
+		  }
 		  std::cout << "Edge" << std::endl;
 		  i=0;
 		  for(EdgeIt it(g); it!=INVALID; ++it, ++i) {
 		    std::cout << "  " << i << ": " << g.id(it)
 			 << " (" << g.id(g.source(it)) << ", " << g.id(g.target(it))
 			 << ")" << std::endl;
+		  }
 		  std::cout << "Arc" << std::endl;
 		  i=0;
 		  for(ArcIt it(g); it!=INVALID; ++it, ++i) {
 		    std::cout << "  " << i << ": " << g.id(it)
 			 << " (" << g.id(g.source(it)) << ", " << g.id(g.target(it))
 			 << ")" << std::endl;
+		  }
+		}
 		template <typename Graph>
 		void check_graph() {
 		  typedef typename Graph::Node Node;
 		  typedef typename Graph::Edge Edge;
 		  typedef typename Graph::Arc Arc;
 		  typedef typename Graph::NodeIt NodeIt;
 		  typedef typename Graph::EdgeIt EdgeIt;
 		  typedef typename Graph::ArcIt ArcIt;
 		  Graph g;
 		  check_item_counts(g,0,0);
 		  Node
 		    n1 = g.addNode(),
 		    n2 = g.addNode(),
 		    n3 = g.addNode();
 		  Edge
 		    e1 = g.addEdge(n1, n2),
 		    e2 = g.addEdge(n2, n3);
 		  // print_items(g);
 		  check_item_counts(g,3,2);
+		}
 		// void checkGridGraph(const GridGraph& g, int w, int h) {
 		//   check(g.width() == w, "Wrong width");
 		//   check(g.height() == h, "Wrong height");
 		//   for (int i = 0; i < w; ++i) {
 		//     for (int j = 0; j < h; ++j) {
 		//       check(g.col(g(i, j)) == i, "Wrong col");
 		//       check(g.row(g(i, j)) == j, "Wrong row");
 		//     }
 		//   }
 		//   for (int i = 0; i < w; ++i) {
 		//     for (int j = 0; j < h - 1; ++j) {
 		//       check(g.source(g.down(g(i, j))) == g(i, j), "Wrong down");
 		//       check(g.target(g.down(g(i, j))) == g(i, j + 1), "Wrong down");
 		//     }
 		//     check(g.down(g(i, h - 1)) == INVALID, "Wrong down");
 		//   }
 		//   for (int i = 0; i < w; ++i) {
 		//     for (int j = 1; j < h; ++j) {
 		//       check(g.source(g.up(g(i, j))) == g(i, j), "Wrong up");
 		//       check(g.target(g.up(g(i, j))) == g(i, j - 1), "Wrong up");
 		//     }
 		//     check(g.up(g(i, 0)) == INVALID, "Wrong up");
 		//   }
 		//   for (int j = 0; j < h; ++j) {
 		//     for (int i = 0; i < w - 1; ++i) {
 		//       check(g.source(g.right(g(i, j))) == g(i, j), "Wrong right");
 		//       check(g.target(g.right(g(i, j))) == g(i + 1, j), "Wrong right");
 		//     }
 		//     check(g.right(g(w - 1, j)) == INVALID, "Wrong right");
 		//   }
 		//   for (int j = 0; j < h; ++j) {
 		//     for (int i = 1; i < w; ++i) {
 		//       check(g.source(g.left(g(i, j))) == g(i, j), "Wrong left");
 		//       check(g.target(g.left(g(i, j))) == g(i - 1, j), "Wrong left");
 		//     }
 		//     check(g.left(g(0, j)) == INVALID, "Wrong left");
 		//   }
 		// }
 		int main() {
 		  check_concepts();
 		  check_graph<ListGraph>();
 		//  check_graph<SmartGraph>();
 		//   {
 		//     FullGraph g(5);
 		//     check_item_counts(g, 5, 10);
 		//   }
 		//   {
 		//     GridGraph g(5, 6);
 		//     check_item_counts(g, 30, 49);
 		//     checkGridGraph(g, 5, 6);
 		//   }
 		  std::cout << __FILE__ ": All tests passed.\n";
 		  return 0;
+		}

test/map_test.h

Show inline comments

 		/* -*- C++ -*-
+		 *
 		 * This file is a part of LEMON, a generic C++ optimization library
+		 *
 		 * Copyright (C) 2003-2007
 		 * Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport
 		 * (Egervary Research Group on Combinatorial Optimization, EGRES).
+		 *
 		 * Permission to use, modify and distribute this software is granted
 		 * provided that this copyright notice appears in all copies. For
 		 * precise terms see the accompanying LICENSE file.
+		 *
 		 * This software is provided "AS IS" with no warranty of any kind,
 		 * express or implied, and with no claim as to its suitability for any
 		 * purpose.
+		 *
 		 */
 		#ifndef LEMON_TEST_MAP_TEST_H
 		#define LEMON_TEST_MAP_TEST_H
 		#include <vector>
 		#include <lemon/maps.h>
 		#include "test_tools.h"
 		//! \ingroup misc
 		//! \file
 		//! \brief Some utilities to test map classes.
 		namespace lemon {
 		  template <typename Graph>
 		  void checkGraphNodeMap() {
 		    Graph graph;
 		    const int num = 16;
 		    typedef typename Graph::Node Node;
 		    std::vector<Node> nodes;
 		    for (int i = 0; i < num; ++i) {
 		      nodes.push_back(graph.addNode());
+		    }
 		    typedef typename Graph::template NodeMap<int> IntNodeMap;
 		    IntNodeMap map(graph, 42);
 		    for (int i = 0; i < int(nodes.size()); ++i) {
 		      check(map[nodes[i]] == 42, "Wrong map constructor.");
+		    }
 		    for (int i = 0; i < num; ++i) {
 		      nodes.push_back(graph.addNode());
 		      map[nodes.back()] = 23;
+		    }
 		    map = constMap<Node>(12);
 		    for (int i = 0; i < int(nodes.size()); ++i) {
 		      check(map[nodes[i]] == 12, "Wrong map constructor.");
+		    }
 		    graph.clear();
 		    nodes.clear();
+		  }
 		  template <typename Graph>
 		  void checkGraphArcMap() {
 		    Graph graph;
 		    const int num = 16;
 		    typedef typename Graph::Node Node;
 		    typedef typename Graph::Arc Arc;
 		    std::vector<Node> nodes;
 		    for (int i = 0; i < num; ++i) {
 		      nodes.push_back(graph.addNode());
+		    }
 		    std::vector<Arc> edges;
 		    for (int i = 0; i < num; ++i) {
 		      for (int j = 0; j < i; ++j) {
 			edges.push_back(graph.addArc(nodes[i], nodes[j]));
+		      }
+		    }
 		    typedef typename Graph::template ArcMap<int> IntArcMap;
 		    IntArcMap map(graph, 42);
 		    for (int i = 0; i < int(edges.size()); ++i) {
 		      check(map[edges[i]] == 42, "Wrong map constructor.");
+		    }
 		    for (int i = 0; i < num; ++i) {
 		      for (int j = i + 1; j < num; ++j) {
 			edges.push_back(graph.addArc(nodes[i], nodes[j]));
 			map[edges.back()] = 23;
+		      }
+		    }
 		    map = constMap<Arc>(12);
 		    for (int i = 0; i < int(edges.size()); ++i) {
 		      check(map[edges[i]] == 12, "Wrong map constructor.");
+		    }
 		    graph.clear();
 		    edges.clear();
+		  }
 		  template <typename Graph>
 		  void checkGraphEdgeMap() {
 		    Graph graph;
 		    const int num = 16;
 		    typedef typename Graph::Node Node;
 		    typedef typename Graph::Edge Edge;
 		    std::vector<Node> nodes;
 		    for (int i = 0; i < num; ++i) {
 		      nodes.push_back(graph.addNode());
+		    }
 		    std::vector<Edge> edges;
 		    for (int i = 0; i < num; ++i) {
 		      for (int j = 0; j < i; ++j) {
 			edges.push_back(graph.addEdge(nodes[i], nodes[j]));
+		      }
+		    }
 		    typedef typename Graph::template EdgeMap<int> IntEdgeMap;
 		    IntEdgeMap map(graph, 42);
 		    for (int i = 0; i < int(edges.size()); ++i) {
 		      check(map[edges[i]] == 42, "Wrong map constructor.");
+		    }
 		    for (int i = 0; i < num; ++i) {
 		      for (int j = i + 1; j < num; ++j) {
 			edges.push_back(graph.addEdge(nodes[i], nodes[j]));
 			map[edges.back()] = 23;
+		      }
+		    }
 		    map = constMap<Edge>(12);
 		    for (int i = 0; i < int(edges.size()); ++i) {
 		      check(map[edges[i]] == 12, "Wrong map constructor.");
+		    }
 		    graph.clear();
 		    edges.clear();
+		  }
+		}
 		#endif

lemon/Makefile.am

Show inline comments

@@ -23,5 +23,15 @@
 		bits_HEADERS += \
 			lemon/bits/alteration_notifier.h \
 			lemon/bits/array_map.h \
 			lemon/bits/base_extender.h \
 			lemon/bits/default_map.h \
 		        lemon/bits/invalid.h \
-		        lemon/bits/utility.h
+			lemon/bits/map_extender.h \
 		        lemon/bits/utility.h \
 			lemon/bits/vector_map.h
 		concept_HEADERS +=
 			lemon/concept_check.h \
 			lemon/concepts/digraph.h \
 			lemon/concepts/graph.h \
 			lemon/concepts/graph_components.h

lemon/list_graph.h

Show inline comments

@@ -18,1 +18,1450 @@
 		#ifndef LEMON_LIST_GRAPH_H
 		#define LEMON_LIST_GRAPH_H
 		///\ingroup graphs
 		///\file
 		///\brief ListDigraph, ListGraph classes.
 		#include <lemon/bits/graph_extender.h>
 		#include <vector>
 		#include <list>
 		namespace lemon {
 		  class ListDigraphBase {
 		  protected:
 		    struct NodeT {
 		      int first_in, first_out;
 		      int prev, next;
 		    };
 		    struct ArcT {
 		      int target, source;
 		      int prev_in, prev_out;
 		      int next_in, next_out;
 		    };
 		    std::vector<NodeT> nodes;
 		    int first_node;
 		    int first_free_node;
 		    std::vector<ArcT> arcs;
 		    int first_free_arc;
 		  public:
 		    typedef ListDigraphBase Digraph;
 		    class Node {
 		      friend class ListDigraphBase;
 		    protected:
 		      int id;
 		      explicit Node(int pid) { id = pid;}
 		    public:
 		      Node() {}
 		      Node (Invalid) { id = -1; }
 		      bool operator==(const Node& node) const {return id == node.id;}
 		      bool operator!=(const Node& node) const {return id != node.id;}
 		      bool operator<(const Node& node) const {return id < node.id;}
 		    };
 		    class Arc {
 		      friend class ListDigraphBase;
 		    protected:
 		      int id;
 		      explicit Arc(int pid) { id = pid;}
 		    public:
 		      Arc() {}
 		      Arc (Invalid) { id = -1; }
 		      bool operator==(const Arc& arc) const {return id == arc.id;}
 		      bool operator!=(const Arc& arc) const {return id != arc.id;}
 		      bool operator<(const Arc& arc) const {return id < arc.id;}
 		    };
 		    ListDigraphBase()
 		      : nodes(), first_node(-1),
 			first_free_node(-1), arcs(), first_free_arc(-1) {}
 		    int maxNodeId() const { return nodes.size()-1; }
 		    int maxArcId() const { return arcs.size()-1; }
 		    Node source(Arc e) const { return Node(arcs[e.id].source); }
 		    Node target(Arc e) const { return Node(arcs[e.id].target); }
 		    void first(Node& node) const {
 		      node.id = first_node;
+		    }
 		    void next(Node& node) const {
 		      node.id = nodes[node.id].next;
+		    }
 		    void first(Arc& e) const {
 		      int n;
 		      for(n = first_node;
 			  n!=-1 && nodes[n].first_in == -1;
 			  n = nodes[n].next);
 		      e.id = (n == -1) ? -1 : nodes[n].first_in;
+		    }
 		    void next(Arc& arc) const {
 		      if (arcs[arc.id].next_in != -1) {
 			arc.id = arcs[arc.id].next_in;
 		      } else {
 			int n;
 			for(n = nodes[arcs[arc.id].target].next;
 			  n!=-1 && nodes[n].first_in == -1;
 			  n = nodes[n].next);
 			arc.id = (n == -1) ? -1 : nodes[n].first_in;
+		      }
+		    }
 		    void firstOut(Arc &e, const Node& v) const {
 		      e.id = nodes[v.id].first_out;
+		    }
 		    void nextOut(Arc &e) const {
 		      e.id=arcs[e.id].next_out;
+		    }
 		    void firstIn(Arc &e, const Node& v) const {
 		      e.id = nodes[v.id].first_in;
+		    }
 		    void nextIn(Arc &e) const {
 		      e.id=arcs[e.id].next_in;
+		    }
 		    static int id(Node v) { return v.id; }
 		    static int id(Arc e) { return e.id; }
 		    static Node nodeFromId(int id) { return Node(id);}
 		    static Arc arcFromId(int id) { return Arc(id);}
 		    Node addNode() {
 		      int n;
 		      if(first_free_node==-1) {
 			n = nodes.size();
 			nodes.push_back(NodeT());
 		      } else {
 			n = first_free_node;
 			first_free_node = nodes[n].next;
+		      }
 		      nodes[n].next = first_node;
 		      if(first_node != -1) nodes[first_node].prev = n;
 		      first_node = n;
 		      nodes[n].prev = -1;
 		      nodes[n].first_in = nodes[n].first_out = -1;
 		      return Node(n);
+		    }
 		    Arc addArc(Node u, Node v) {
 		      int n;
 		      if (first_free_arc == -1) {
 			n = arcs.size();
 			arcs.push_back(ArcT());
 		      } else {
 			n = first_free_arc;
 			first_free_arc = arcs[n].next_in;
+		      }
 		      arcs[n].source = u.id;
 		      arcs[n].target = v.id;
 		      arcs[n].next_out = nodes[u.id].first_out;
 		      if(nodes[u.id].first_out != -1) {
 			arcs[nodes[u.id].first_out].prev_out = n;
+		      }
 		      arcs[n].next_in = nodes[v.id].first_in;
 		      if(nodes[v.id].first_in != -1) {
 			arcs[nodes[v.id].first_in].prev_in = n;
+		      }
 		      arcs[n].prev_in = arcs[n].prev_out = -1;
 		      nodes[u.id].first_out = nodes[v.id].first_in = n;
 		      return Arc(n);
+		    }
 		    void erase(const Node& node) {
 		      int n = node.id;
 		      if(nodes[n].next != -1) {
 			nodes[nodes[n].next].prev = nodes[n].prev;
+		      }
 		      if(nodes[n].prev != -1) {
 			nodes[nodes[n].prev].next = nodes[n].next;
 		      } else {
 			first_node = nodes[n].next;
+		      }
 		      nodes[n].next = first_free_node;
 		      first_free_node = n;
+		    }
 		    void erase(const Arc& arc) {
 		      int n = arc.id;
 		      if(arcs[n].next_in!=-1) {
 			arcs[arcs[n].next_in].prev_in = arcs[n].prev_in;
+		      }
 		      if(arcs[n].prev_in!=-1) {
 			arcs[arcs[n].prev_in].next_in = arcs[n].next_in;
 		      } else {
 			nodes[arcs[n].target].first_in = arcs[n].next_in;
+		      }
 		      if(arcs[n].next_out!=-1) {
 			arcs[arcs[n].next_out].prev_out = arcs[n].prev_out;
+		      }
 		      if(arcs[n].prev_out!=-1) {
 			arcs[arcs[n].prev_out].next_out = arcs[n].next_out;
 		      } else {
 			nodes[arcs[n].source].first_out = arcs[n].next_out;
+		      }
 		      arcs[n].next_in = first_free_arc;
 		      first_free_arc = n;
+		    }
 		    void clear() {
 		      arcs.clear();
 		      nodes.clear();
 		      first_node = first_free_node = first_free_arc = -1;
+		    }
 		  protected:
 		    void changeTarget(Arc e, Node n)
+		    {
 		      if(arcs[e.id].next_in != -1)
 			arcs[arcs[e.id].next_in].prev_in = arcs[e.id].prev_in;
 		      if(arcs[e.id].prev_in != -1)
 			arcs[arcs[e.id].prev_in].next_in = arcs[e.id].next_in;
 		      else nodes[arcs[e.id].target].first_in = arcs[e.id].next_in;
 		      if (nodes[n.id].first_in != -1) {
 			arcs[nodes[n.id].first_in].prev_in = e.id;
+		      }
 		      arcs[e.id].target = n.id;
 		      arcs[e.id].prev_in = -1;
 		      arcs[e.id].next_in = nodes[n.id].first_in;
 		      nodes[n.id].first_in = e.id;
+		    }
 		    void changeSource(Arc e, Node n)
+		    {
 		      if(arcs[e.id].next_out != -1)
 			arcs[arcs[e.id].next_out].prev_out = arcs[e.id].prev_out;
 		      if(arcs[e.id].prev_out != -1)
 			arcs[arcs[e.id].prev_out].next_out = arcs[e.id].next_out;
 		      else nodes[arcs[e.id].source].first_out = arcs[e.id].next_out;
 		      if (nodes[n.id].first_out != -1) {
 			arcs[nodes[n.id].first_out].prev_out = e.id;
+		      }
 		      arcs[e.id].source = n.id;
 		      arcs[e.id].prev_out = -1;
 		      arcs[e.id].next_out = nodes[n.id].first_out;
 		      nodes[n.id].first_out = e.id;
+		    }
 		  };
 		  typedef DigraphExtender<ListDigraphBase> ExtendedListDigraphBase;
 		  /// \addtogroup digraphs
 		  /// @{
 		  ///A list digraph class.
 		  ///This is a simple and fast digraph implementation.
 		  ///
 		  ///It conforms to the \ref concepts::Digraph "Digraph concept" and it
 		  ///also provides several additional useful extra functionalities.
 		  ///The most of the member functions and nested classes are
 		  ///documented only in the concept class.
 		  ///
 		  ///An important extra feature of this digraph implementation is that
 		  ///its maps are real \ref concepts::ReferenceMap "reference map"s.
 		  ///
 		  ///\sa concepts::Digraph.
 		  class ListDigraph : public ExtendedListDigraphBase {
 		  private:
 		    ///ListDigraph is \e not copy constructible. Use DigraphCopy() instead.
 		    ///ListDigraph is \e not copy constructible. Use DigraphCopy() instead.
 		    ///
 		    ListDigraph(const ListDigraph &) :ExtendedListDigraphBase() {};
 		    ///\brief Assignment of ListDigraph to another one is \e not allowed.
 		    ///Use DigraphCopy() instead.
 		    ///Assignment of ListDigraph to another one is \e not allowed.
 		    ///Use DigraphCopy() instead.
 		    void operator=(const ListDigraph &) {}
 		  public:
 		    typedef ExtendedListDigraphBase Parent;
 		    /// Constructor
 		    /// Constructor.
 		    ///
 		    ListDigraph() {}
 		    ///Add a new node to the digraph.
 		    /// \return the new node.
 		    ///
 		    Node addNode() { return Parent::addNode(); }
 		    ///Add a new arc to the digraph.
 		    ///Add a new arc to the digraph with source node \c s
 		    ///and target node \c t.
 		    ///\return the new arc.
 		    Arc addArc(const Node& s, const Node& t) {
 		      return Parent::addArc(s, t);
+		    }
 		    /// Changes the target of \c e to \c n
 		    /// Changes the target of \c e to \c n
 		    ///
 		    ///\note The <tt>ArcIt</tt>s and <tt>OutArcIt</tt>s referencing
 		    ///the changed arc remain valid. However <tt>InArcIt</tt>s are
 		    ///invalidated.
 		    ///\warning This functionality cannot be used together with the Snapshot
 		    ///feature.
 		    void changeTarget(Arc e, Node n) {
 		      Parent::changeTarget(e,n);
+		    }
 		    /// Changes the source of \c e to \c n
 		    /// Changes the source of \c e to \c n
 		    ///
 		    ///\note The <tt>ArcIt</tt>s and <tt>InArcIt</tt>s referencing
 		    ///the changed arc remain valid. However <tt>OutArcIt</tt>s are
 		    ///invalidated.
 		    ///\warning This functionality cannot be used together with the Snapshot
 		    ///feature.
 		    void changeSource(Arc e, Node n) {
 		      Parent::changeSource(e,n);
+		    }
 		    /// Invert the direction of an arc.
 		    ///\note The <tt>ArcIt</tt>s referencing the changed arc remain
 		    ///valid. However <tt>OutArcIt</tt>s and <tt>InArcIt</tt>s are
 		    ///invalidated.
 		    ///\warning This functionality cannot be used together with the Snapshot
 		    ///feature.
 		    void reverseArc(Arc e) {
 		      Node t=target(e);
 		      changeTarget(e,source(e));
 		      changeSource(e,t);
+		    }
 		    /// Using this it is possible to avoid the superfluous memory
 		    /// allocation: if you know that the digraph you want to build will
 		    /// be very large (e.g. it will contain millions of nodes and/or arcs)
 		    /// then it is worth reserving space for this amount before starting
 		    /// to build the digraph.
 		    /// \sa reserveArc
 		    void reserveNode(int n) { nodes.reserve(n); };
 		    /// \brief Using this it is possible to avoid the superfluous memory
 		    /// allocation.
 		    /// Using this it is possible to avoid the superfluous memory
 		    /// allocation: if you know that the digraph you want to build will
 		    /// be very large (e.g. it will contain millions of nodes and/or arcs)
 		    /// then it is worth reserving space for this amount before starting
 		    /// to build the digraph.
 		    /// \sa reserveNode
 		    void reserveArc(int m) { arcs.reserve(m); };
 		    ///Contract two nodes.
 		    ///This function contracts two nodes.
 		    ///
 		    ///Node \p b will be removed but instead of deleting
 		    ///incident arcs, they will be joined to \p a.
 		    ///The last parameter \p r controls whether to remove loops. \c true
 		    ///means that loops will be removed.
 		    ///
 		    ///\note The <tt>ArcIt</tt>s
 		    ///referencing a moved arc remain
 		    ///valid. However <tt>InArcIt</tt>s and <tt>OutArcIt</tt>s
 		    ///may be invalidated.
 		    ///\warning This functionality cannot be used together with the Snapshot
 		    ///feature.
 		    void contract(Node a, Node b, bool r = true)
+		    {
 		      for(OutArcIt e(*this,b);e!=INVALID;) {
 			OutArcIt f=e;
 			++f;
 			if(r && target(e)==a) erase(e);
 			else changeSource(e,a);
 			e=f;
+		      }
 		      for(InArcIt e(*this,b);e!=INVALID;) {
 			InArcIt f=e;
 			++f;
 			if(r && source(e)==a) erase(e);
 			else changeTarget(e,a);
 			e=f;
+		      }
 		      erase(b);
+		    }
 		    ///Split a node.
 		    ///This function splits a node. First a new node is added to the digraph,
 		    ///then the source of each outgoing arc of \c n is moved to this new node.
 		    ///If \c connect is \c true (this is the default value), then a new arc
 		    ///from \c n to the newly created node is also added.
 		    ///\return The newly created node.
 		    ///
 		    ///\note The <tt>ArcIt</tt>s referencing a moved arc remain
 		    ///valid. However <tt>InArcIt</tt>s and <tt>OutArcIt</tt>s may
 		    ///be invalidated.
 		    ///
 		    ///\warning This functionality cannot be used together with the
 		    ///Snapshot feature.  \todo It could be implemented in a bit
 		    ///faster way.
 		    Node split(Node n, bool connect = true) {
 		      Node b = addNode();
 		      for(OutArcIt e(*this,n);e!=INVALID;) {
 		 	OutArcIt f=e;
 			++f;
 			changeSource(e,b);
 			e=f;
+		      }
 		      if (connect) addArc(n,b);
 		      return b;
+		    }
 		    ///Split an arc.
 		    ///This function splits an arc. First a new node \c b is added to
 		    ///the digraph, then the original arc is re-targeted to \c
 		    ///b. Finally an arc from \c b to the original target is added.
 		    ///\return The newly created node.
 		    ///\warning This functionality
 		    ///cannot be used together with the Snapshot feature.
 		    Node split(Arc e) {
 		      Node b = addNode();
 		      addArc(b,target(e));
 		      changeTarget(e,b);
 		      return b;
+		    }
 		    /// \brief Class to make a snapshot of the digraph and restore
 		    /// to it later.
 		    ///
 		    /// Class to make a snapshot of the digraph and to restore it
 		    /// later.
 		    ///
 		    /// The newly added nodes and arcs can be removed using the
 		    /// restore() function.
 		    ///
 		    /// \warning Arc and node deletions cannot be restored. This
 		    /// events invalidate the snapshot.
 		    class Snapshot {
 		    protected:
 		      typedef Parent::NodeNotifier NodeNotifier;
 		      class NodeObserverProxy : public NodeNotifier::ObserverBase {
 		      public:
 		        NodeObserverProxy(Snapshot& _snapshot)
 		          : snapshot(_snapshot) {}
 		        using NodeNotifier::ObserverBase::attach;
 		        using NodeNotifier::ObserverBase::detach;
 		        using NodeNotifier::ObserverBase::attached;
 		      protected:
 		        virtual void add(const Node& node) {
 		          snapshot.addNode(node);
+		        }
 		        virtual void add(const std::vector<Node>& nodes) {
 		          for (int i = nodes.size() - 1; i >= 0; ++i) {
 		            snapshot.addNode(nodes[i]);
+		          }
+		        }
 		        virtual void erase(const Node& node) {
 		          snapshot.eraseNode(node);
+		        }
 		        virtual void erase(const std::vector<Node>& nodes) {
 		          for (int i = 0; i < int(nodes.size()); ++i) {
 		            snapshot.eraseNode(nodes[i]);
+		          }
+		        }
 		        virtual void build() {
 		          Node node;
 		          std::vector<Node> nodes;
 		          for (notifier()->first(node); node != INVALID;
 		               notifier()->next(node)) {
 		            nodes.push_back(node);
+		          }
 		          for (int i = nodes.size() - 1; i >= 0; --i) {
 		            snapshot.addNode(nodes[i]);
+		          }
+		        }
 		        virtual void clear() {
 		          Node node;
 		          for (notifier()->first(node); node != INVALID;
 		               notifier()->next(node)) {
 		            snapshot.eraseNode(node);
+		          }
+		        }
 		        Snapshot& snapshot;
 		      };
 		      class ArcObserverProxy : public ArcNotifier::ObserverBase {
 		      public:
 		        ArcObserverProxy(Snapshot& _snapshot)
 		          : snapshot(_snapshot) {}
 		        using ArcNotifier::ObserverBase::attach;
 		        using ArcNotifier::ObserverBase::detach;
 		        using ArcNotifier::ObserverBase::attached;
 		      protected:
 		        virtual void add(const Arc& arc) {
 		          snapshot.addArc(arc);
+		        }
 		        virtual void add(const std::vector<Arc>& arcs) {
 		          for (int i = arcs.size() - 1; i >= 0; ++i) {
 		            snapshot.addArc(arcs[i]);
+		          }
+		        }
 		        virtual void erase(const Arc& arc) {
 		          snapshot.eraseArc(arc);
+		        }
 		        virtual void erase(const std::vector<Arc>& arcs) {
 		          for (int i = 0; i < int(arcs.size()); ++i) {
 		            snapshot.eraseArc(arcs[i]);
+		          }
+		        }
 		        virtual void build() {
 		          Arc arc;
 		          std::vector<Arc> arcs;
 		          for (notifier()->first(arc); arc != INVALID;
 		               notifier()->next(arc)) {
 		            arcs.push_back(arc);
+		          }
 		          for (int i = arcs.size() - 1; i >= 0; --i) {
 		            snapshot.addArc(arcs[i]);
+		          }
+		        }
 		        virtual void clear() {
 		          Arc arc;
 		          for (notifier()->first(arc); arc != INVALID;
 		               notifier()->next(arc)) {
 		            snapshot.eraseArc(arc);
+		          }
+		        }
 		        Snapshot& snapshot;
 		      };
 		      ListDigraph *digraph;
 		      NodeObserverProxy node_observer_proxy;
 		      ArcObserverProxy arc_observer_proxy;
 		      std::list<Node> added_nodes;
 		      std::list<Arc> added_arcs;
 		      void addNode(const Node& node) {
 		        added_nodes.push_front(node);
+		      }
 		      void eraseNode(const Node& node) {
 		        std::list<Node>::iterator it =
 		          std::find(added_nodes.begin(), added_nodes.end(), node);
 		        if (it == added_nodes.end()) {
 		          clear();
 		          arc_observer_proxy.detach();
 		          throw NodeNotifier::ImmediateDetach();
 		        } else {
 		          added_nodes.erase(it);
+		        }
+		      }
 		      void addArc(const Arc& arc) {
 		        added_arcs.push_front(arc);
+		      }
 		      void eraseArc(const Arc& arc) {
 		        std::list<Arc>::iterator it =
 		          std::find(added_arcs.begin(), added_arcs.end(), arc);
 		        if (it == added_arcs.end()) {
 		          clear();
 		          node_observer_proxy.detach();
 		          throw ArcNotifier::ImmediateDetach();
 		        } else {
 		          added_arcs.erase(it);
+		        }
+		      }
 		      void attach(ListDigraph &_digraph) {
 			digraph = &_digraph;
 			node_observer_proxy.attach(digraph->notifier(Node()));
 		        arc_observer_proxy.attach(digraph->notifier(Arc()));
+		      }
 		      void detach() {
 			node_observer_proxy.detach();
 			arc_observer_proxy.detach();
+		      }
 		      bool attached() const {
 		        return node_observer_proxy.attached();
+		      }
 		      void clear() {
 		        added_nodes.clear();
 		        added_arcs.clear();
+		      }
 		    public:
 		      /// \brief Default constructor.
 		      ///
 		      /// Default constructor.
 		      /// To actually make a snapshot you must call save().
 		      Snapshot()
 		        : digraph(0), node_observer_proxy(*this),
 		          arc_observer_proxy(*this) {}
 		      /// \brief Constructor that immediately makes a snapshot.
 		      ///
 		      /// This constructor immediately makes a snapshot of the digraph.
 		      /// \param _digraph The digraph we make a snapshot of.
 		      Snapshot(ListDigraph &_digraph)
 		        : node_observer_proxy(*this),
 		          arc_observer_proxy(*this) {
 			attach(_digraph);
+		      }
 		      /// \brief Make a snapshot.
 		      ///
 		      /// Make a snapshot of the digraph.
 		      ///
 		      /// This function can be called more than once. In case of a repeated
 		      /// call, the previous snapshot gets lost.
 		      /// \param _digraph The digraph we make the snapshot of.
 		      void save(ListDigraph &_digraph) {
 		        if (attached()) {
 		          detach();
 		          clear();
+		        }
 		        attach(_digraph);
+		      }
 		      /// \brief Undo the changes until the last snapshot.
 		      //
 		      /// Undo the changes until the last snapshot created by save().
 		      void restore() {
 			detach();
 			for(std::list<Arc>::iterator it = added_arcs.begin();
 		            it != added_arcs.end(); ++it) {
 			  digraph->erase(*it);
+			}
 			for(std::list<Node>::iterator it = added_nodes.begin();
 		            it != added_nodes.end(); ++it) {
 			  digraph->erase(*it);
+			}
 		        clear();
+		      }
 		      /// \brief Gives back true when the snapshot is valid.
 		      ///
 		      /// Gives back true when the snapshot is valid.
 		      bool valid() const {
 		        return attached();
+		      }
 		    };
 		  };
 		  ///@}
 		  class ListGraphBase {
 		  protected:
 		    struct NodeT {
 		      int first_out;
 		      int prev, next;
 		    };
 		    struct ArcT {
 		      int target;
 		      int prev_out, next_out;
 		    };
 		    std::vector<NodeT> nodes;
 		    int first_node;
 		    int first_free_node;
 		    std::vector<ArcT> arcs;
 		    int first_free_arc;
 		  public:
 		    typedef ListGraphBase Digraph;
 		    class Node;
 		    class Arc;
 		    class Edge;
 		    class Node {
 		      friend class ListGraphBase;
 		    protected:
 		      int id;
 		      explicit Node(int pid) { id = pid;}
 		    public:
 		      Node() {}
 		      Node (Invalid) { id = -1; }
 		      bool operator==(const Node& node) const {return id == node.id;}
 		      bool operator!=(const Node& node) const {return id != node.id;}
 		      bool operator<(const Node& node) const {return id < node.id;}
 		    };
 		    class Edge {
 		      friend class ListGraphBase;
 		    protected:
 		      int id;
 		      explicit Edge(int pid) { id = pid;}
 		    public:
 		      Edge() {}
 		      Edge (Invalid) { id = -1; }
 		      bool operator==(const Edge& arc) const {return id == arc.id;}
 		      bool operator!=(const Edge& arc) const {return id != arc.id;}
 		      bool operator<(const Edge& arc) const {return id < arc.id;}
 		    };
 		    class Arc {
 		      friend class ListGraphBase;
 		    protected:
 		      int id;
 		      explicit Arc(int pid) { id = pid;}
 		    public:
 		      operator Edge() const { return edgeFromId(id / 2); }
 		      Arc() {}
 		      Arc (Invalid) { id = -1; }
 		      bool operator==(const Arc& arc) const {return id == arc.id;}
 		      bool operator!=(const Arc& arc) const {return id != arc.id;}
 		      bool operator<(const Arc& arc) const {return id < arc.id;}
 		    };
 		    ListGraphBase()
 		      : nodes(), first_node(-1),
 			first_free_node(-1), arcs(), first_free_arc(-1) {}
 		    int maxNodeId() const { return nodes.size()-1; }
 		    int maxEdgeId() const { return arcs.size() / 2 - 1; }
 		    int maxArcId() const { return arcs.size()-1; }
 		    Node source(Arc e) const { return Node(arcs[e.id ^ 1].target); }
 		    Node target(Arc e) const { return Node(arcs[e.id].target); }
 		    Node u(Edge e) const { return Node(arcs[2 * e.id].target); }
 		    Node v(Edge e) const { return Node(arcs[2 * e.id + 1].target); }
 		    static bool direction(Arc e) {
 		      return (e.id & 1) == 1;
+		    }
 		    static Arc direct(Edge e, bool d) {
 		      return Arc(e.id * 2 + (d ? 1 : 0));
+		    }
 		    void first(Node& node) const {
 		      node.id = first_node;
+		    }
 		    void next(Node& node) const {
 		      node.id = nodes[node.id].next;
+		    }
 		    void first(Arc& e) const {
 		      int n = first_node;
 		      while (n != -1 && nodes[n].first_out == -1) {
 		        n = nodes[n].next;
+		      }
 		      e.id = (n == -1) ? -1 : nodes[n].first_out;
+		    }
 		    void next(Arc& e) const {
 		      if (arcs[e.id].next_out != -1) {
 			e.id = arcs[e.id].next_out;
 		      } else {
 			int n = nodes[arcs[e.id ^ 1].target].next;
 		        while(n != -1 && nodes[n].first_out == -1) {
 		          n = nodes[n].next;
+		        }
 			e.id = (n == -1) ? -1 : nodes[n].first_out;
+		      }
+		    }
 		    void first(Edge& e) const {
 		      int n = first_node;
 		      while (n != -1) {
 		        e.id = nodes[n].first_out;
 		        while ((e.id & 1) != 1) {
 		          e.id = arcs[e.id].next_out;
+		        }
 		        if (e.id != -1) {
 		          e.id /= 2;
 		          return;
+		        }
 		        n = nodes[n].next;
+		      }
 		      e.id = -1;
+		    }
 		    void next(Edge& e) const {
 		      int n = arcs[e.id * 2].target;
 		      e.id = arcs[(e.id * 2) | 1].next_out;
 		      while ((e.id & 1) != 1) {
 		        e.id = arcs[e.id].next_out;
+		      }
 		      if (e.id != -1) {
 		        e.id /= 2;
 		        return;
+		      }
 		      n = nodes[n].next;
 		      while (n != -1) {
 		        e.id = nodes[n].first_out;
 		        while ((e.id & 1) != 1) {
 		          e.id = arcs[e.id].next_out;
+		        }
 		        if (e.id != -1) {
 		          e.id /= 2;
 		          return;
+		        }
 		        n = nodes[n].next;
+		      }
 		      e.id = -1;
+		    }
 		    void firstOut(Arc &e, const Node& v) const {
 		      e.id = nodes[v.id].first_out;
+		    }
 		    void nextOut(Arc &e) const {
 		      e.id = arcs[e.id].next_out;
+		    }
 		    void firstIn(Arc &e, const Node& v) const {
 		      e.id = ((nodes[v.id].first_out) ^ 1);
 		      if (e.id == -2) e.id = -1;
+		    }
 		    void nextIn(Arc &e) const {
 		      e.id = ((arcs[e.id ^ 1].next_out) ^ 1);
 		      if (e.id == -2) e.id = -1;
+		    }
 		    void firstInc(Edge &e, bool& d, const Node& v) const {
 		      int de = nodes[v.id].first_out;
 		      if (de != -1 ) {
 		        e.id = de / 2;
 		        d = ((de & 1) == 1);
 		      } else {
 		        e.id = -1;
 		        d = true;
+		      }
+		    }
 		    void nextInc(Edge &e, bool& d) const {
 		      int de = (arcs[(e.id * 2) | (d ? 1 : 0)].next_out);
 		      if (de != -1 ) {
 		        e.id = de / 2;
 		        d = ((de & 1) == 1);
 		      } else {
 		        e.id = -1;
 		        d = true;
+		      }
+		    }
 		    static int id(Node v) { return v.id; }
 		    static int id(Arc e) { return e.id; }
 		    static int id(Edge e) { return e.id; }
 		    static Node nodeFromId(int id) { return Node(id);}
 		    static Arc arcFromId(int id) { return Arc(id);}
 		    static Edge edgeFromId(int id) { return Edge(id);}
 		    Node addNode() {
 		      int n;
 		      if(first_free_node==-1) {
 			n = nodes.size();
 			nodes.push_back(NodeT());
 		      } else {
 			n = first_free_node;
 			first_free_node = nodes[n].next;
+		      }
 		      nodes[n].next = first_node;
 		      if (first_node != -1) nodes[first_node].prev = n;
 		      first_node = n;
 		      nodes[n].prev = -1;
 		      nodes[n].first_out = -1;
 		      return Node(n);
+		    }
 		    Edge addEdge(Node u, Node v) {
 		      int n;
 		      if (first_free_arc == -1) {
 			n = arcs.size();
 			arcs.push_back(ArcT());
 			arcs.push_back(ArcT());
 		      } else {
 			n = first_free_arc;
 			first_free_arc = arcs[n].next_out;
+		      }
 		      arcs[n].target = u.id;
 		      arcs[n | 1].target = v.id;
 		      arcs[n].next_out = nodes[v.id].first_out;
 		      if (nodes[v.id].first_out != -1) {
 			arcs[nodes[v.id].first_out].prev_out = n;
+		      }
 		      arcs[n].prev_out = -1;
 		      nodes[v.id].first_out = n;
 		      arcs[n | 1].next_out = nodes[u.id].first_out;
 		      if (nodes[u.id].first_out != -1) {
 			arcs[nodes[u.id].first_out].prev_out = (n | 1);
+		      }
 		      arcs[n | 1].prev_out = -1;
 		      nodes[u.id].first_out = (n | 1);
 		      return Edge(n / 2);
+		    }
 		    void erase(const Node& node) {
 		      int n = node.id;
 		      if(nodes[n].next != -1) {
 			nodes[nodes[n].next].prev = nodes[n].prev;
+		      }
 		      if(nodes[n].prev != -1) {
 			nodes[nodes[n].prev].next = nodes[n].next;
 		      } else {
 			first_node = nodes[n].next;
+		      }
 		      nodes[n].next = first_free_node;
 		      first_free_node = n;
+		    }
 		    void erase(const Edge& arc) {
 		      int n = arc.id * 2;
 		      if (arcs[n].next_out != -1) {
 			arcs[arcs[n].next_out].prev_out = arcs[n].prev_out;
+		      }
 		      if (arcs[n].prev_out != -1) {
 			arcs[arcs[n].prev_out].next_out = arcs[n].next_out;
 		      } else {
 			nodes[arcs[n | 1].target].first_out = arcs[n].next_out;
+		      }
 		      if (arcs[n | 1].next_out != -1) {
 			arcs[arcs[n | 1].next_out].prev_out = arcs[n | 1].prev_out;
+		      }
 		      if (arcs[n | 1].prev_out != -1) {
 			arcs[arcs[n | 1].prev_out].next_out = arcs[n | 1].next_out;
 		      } else {
 			nodes[arcs[n].target].first_out = arcs[n | 1].next_out;
+		      }
 		      arcs[n].next_out = first_free_arc;
 		      first_free_arc = n;
+		    }
 		    void clear() {
 		      arcs.clear();
 		      nodes.clear();
 		      first_node = first_free_node = first_free_arc = -1;
+		    }
 		  protected:
 		    void changeTarget(Edge e, Node n) {
 		      if(arcs[2 * e.id].next_out != -1) {
 			arcs[arcs[2 * e.id].next_out].prev_out = arcs[2 * e.id].prev_out;
+		      }
 		      if(arcs[2 * e.id].prev_out != -1) {
 			arcs[arcs[2 * e.id].prev_out].next_out =
 		          arcs[2 * e.id].next_out;
 		      } else {
 		        nodes[arcs[(2 * e.id) | 1].target].first_out =
 		          arcs[2 * e.id].next_out;
+		      }
 		      if (nodes[n.id].first_out != -1) {
 			arcs[nodes[n.id].first_out].prev_out = 2 * e.id;
+		      }
 		      arcs[(2 * e.id) | 1].target = n.id;
 		      arcs[2 * e.id].prev_out = -1;
 		      arcs[2 * e.id].next_out = nodes[n.id].first_out;
 		      nodes[n.id].first_out = 2 * e.id;
+		    }
 		    void changeSource(Edge e, Node n) {
 		      if(arcs[(2 * e.id) | 1].next_out != -1) {
 			arcs[arcs[(2 * e.id) | 1].next_out].prev_out =
 		          arcs[(2 * e.id) | 1].prev_out;
+		      }
 		      if(arcs[(2 * e.id) | 1].prev_out != -1) {
 			arcs[arcs[(2 * e.id) | 1].prev_out].next_out =
 		          arcs[(2 * e.id) | 1].next_out;
 		      } else {
 		        nodes[arcs[2 * e.id].target].first_out =
 		          arcs[(2 * e.id) | 1].next_out;
+		      }
 		      if (nodes[n.id].first_out != -1) {
 			arcs[nodes[n.id].first_out].prev_out = ((2 * e.id) | 1);
+		      }
 		      arcs[2 * e.id].target = n.id;
 		      arcs[(2 * e.id) | 1].prev_out = -1;
 		      arcs[(2 * e.id) | 1].next_out = nodes[n.id].first_out;
 		      nodes[n.id].first_out = ((2 * e.id) | 1);
+		    }
 		  };
 		//   typedef GraphExtender<UndirDigraphExtender<ListDigraphBase> >
 		//   ExtendedListGraphBase;
 		  typedef GraphExtender<ListGraphBase> ExtendedListGraphBase;
 		  /// \addtogroup digraphs
 		  /// @{
 		  ///An undirected list digraph class.
 		  ///This is a simple and fast undirected digraph implementation.
 		  ///
 		  ///An important extra feature of this digraph implementation is that
 		  ///its maps are real \ref concepts::ReferenceMap "reference map"s.
 		  ///
 		  ///It conforms to the
 		  ///\ref concepts::Graph "Graph concept".
 		  ///
 		  ///\sa concepts::Graph.
 		  ///
 		  class ListGraph : public ExtendedListGraphBase {
 		  private:
 		    ///ListGraph is \e not copy constructible. Use GraphCopy() instead.
 		    ///ListGraph is \e not copy constructible. Use GraphCopy() instead.
 		    ///
 		    ListGraph(const ListGraph &) :ExtendedListGraphBase()  {};
 		    ///\brief Assignment of ListGraph to another one is \e not allowed.
 		    ///Use GraphCopy() instead.
 		    ///Assignment of ListGraph to another one is \e not allowed.
 		    ///Use GraphCopy() instead.
 		    void operator=(const ListGraph &) {}
 		  public:
 		    /// Constructor
 		    /// Constructor.
 		    ///
 		    ListGraph() {}
 		    typedef ExtendedListGraphBase Parent;
 		    typedef Parent::OutArcIt IncArcIt;
 		    /// \brief Add a new node to the digraph.
 		    ///
 		    /// \return the new node.
 		    ///
 		    Node addNode() { return Parent::addNode(); }
 		    /// \brief Add a new edge to the digraph.
 		    ///
 		    /// Add a new arc to the digraph with source node \c s
 		    /// and target node \c t.
 		    /// \return the new edge.
 		    Edge addEdge(const Node& s, const Node& t) {
 		      return Parent::addEdge(s, t);
+		    }
 		    /// \brief Changes the source of \c e to \c n
 		    ///
 		    /// Changes the source of \c e to \c n
 		    ///
 		    ///\note The <tt>ArcIt</tt>s and <tt>InArcIt</tt>s
 		    ///referencing the changed arc remain
 		    ///valid. However <tt>OutArcIt</tt>s are invalidated.
 		    void changeSource(Edge e, Node n) {
 		      Parent::changeSource(e,n);
+		    }
 		    /// \brief Changes the target of \c e to \c n
 		    ///
 		    /// Changes the target of \c e to \c n
 		    ///
 		    /// \note The <tt>ArcIt</tt>s referencing the changed arc remain
 		    /// valid. However the other iterators may be invalidated.
 		    void changeTarget(Edge e, Node n) {
 		      Parent::changeTarget(e,n);
+		    }
 		    /// \brief Changes the source of \c e to \c n
 		    ///
 		    /// Changes the source of \c e to \c n. It changes the proper
 		    /// node of the represented edge.
 		    ///
 		    ///\note The <tt>ArcIt</tt>s and <tt>InArcIt</tt>s
 		    ///referencing the changed arc remain
 		    ///valid. However <tt>OutArcIt</tt>s are invalidated.
 		    void changeSource(Arc e, Node n) {
 		      if (Parent::direction(e)) {
 		        Parent::changeSource(e,n);
 		      } else {
 		        Parent::changeTarget(e,n);
+		      }
+		    }
 		    /// \brief Changes the target of \c e to \c n
 		    ///
 		    /// Changes the target of \c e to \c n. It changes the proper
 		    /// node of the represented edge.
 		    ///
 		    ///\note The <tt>ArcIt</tt>s and <tt>OutArcIt</tt>s
 		    ///referencing the changed arc remain
 		    ///valid. However <tt>InArcIt</tt>s are invalidated.
 		    void changeTarget(Arc e, Node n) {
 		      if (Parent::direction(e)) {
 		        Parent::changeTarget(e,n);
 		      } else {
 		        Parent::changeSource(e,n);
+		      }
+		    }
 		    /// \brief Contract two nodes.
 		    ///
 		    /// This function contracts two nodes.
 		    ///
 		    /// Node \p b will be removed but instead of deleting
 		    /// its neighboring arcs, they will be joined to \p a.
 		    /// The last parameter \p r controls whether to remove loops. \c true
 		    /// means that loops will be removed.
 		    ///
 		    /// \note The <tt>ArcIt</tt>s referencing a moved arc remain
 		    /// valid.
 		    void contract(Node a, Node b, bool r = true) {
 		      for(IncArcIt e(*this, b); e!=INVALID;) {
 			IncArcIt f = e; ++f;
 			if (r && runningNode(e) == a) {
 			  erase(e);
 			} else if (source(e) == b) {
 			  changeSource(e, a);
 			} else {
 			  changeTarget(e, a);
+			}
 			e = f;
+		      }
 		      erase(b);
+		    }
 		    /// \brief Class to make a snapshot of the digraph and restore
 		    /// to it later.
 		    ///
 		    /// Class to make a snapshot of the digraph and to restore it
 		    /// later.
 		    ///
 		    /// The newly added nodes and edges can be removed
 		    /// using the restore() function.
 		    ///
 		    /// \warning Arc and node deletions cannot be restored. This
 		    /// events invalidate the snapshot.
 		    class Snapshot {
 		    protected:
 		      typedef Parent::NodeNotifier NodeNotifier;
 		      class NodeObserverProxy : public NodeNotifier::ObserverBase {
 		      public:
 		        NodeObserverProxy(Snapshot& _snapshot)
 		          : snapshot(_snapshot) {}
 		        using NodeNotifier::ObserverBase::attach;
 		        using NodeNotifier::ObserverBase::detach;
 		        using NodeNotifier::ObserverBase::attached;
 		      protected:
 		        virtual void add(const Node& node) {
 		          snapshot.addNode(node);
+		        }
 		        virtual void add(const std::vector<Node>& nodes) {
 		          for (int i = nodes.size() - 1; i >= 0; ++i) {
 		            snapshot.addNode(nodes[i]);
+		          }
+		        }
 		        virtual void erase(const Node& node) {
 		          snapshot.eraseNode(node);
+		        }
 		        virtual void erase(const std::vector<Node>& nodes) {
 		          for (int i = 0; i < int(nodes.size()); ++i) {
 		            snapshot.eraseNode(nodes[i]);
+		          }
+		        }
 		        virtual void build() {
 		          Node node;
 		          std::vector<Node> nodes;
 		          for (notifier()->first(node); node != INVALID;
 		               notifier()->next(node)) {
 		            nodes.push_back(node);
+		          }
 		          for (int i = nodes.size() - 1; i >= 0; --i) {
 		            snapshot.addNode(nodes[i]);
+		          }
+		        }
 		        virtual void clear() {
 		          Node node;
 		          for (notifier()->first(node); node != INVALID;
 		               notifier()->next(node)) {
 		            snapshot.eraseNode(node);
+		          }
+		        }
 		        Snapshot& snapshot;
 		      };
 		      class EdgeObserverProxy : public EdgeNotifier::ObserverBase {
 		      public:
 		        EdgeObserverProxy(Snapshot& _snapshot)
 		          : snapshot(_snapshot) {}
 		        using EdgeNotifier::ObserverBase::attach;
 		        using EdgeNotifier::ObserverBase::detach;
 		        using EdgeNotifier::ObserverBase::attached;
 		      protected:
 		        virtual void add(const Edge& arc) {
 		          snapshot.addEdge(arc);
+		        }
 		        virtual void add(const std::vector<Edge>& arcs) {
 		          for (int i = arcs.size() - 1; i >= 0; ++i) {
 		            snapshot.addEdge(arcs[i]);
+		          }
+		        }
 		        virtual void erase(const Edge& arc) {
 		          snapshot.eraseEdge(arc);
+		        }
 		        virtual void erase(const std::vector<Edge>& arcs) {
 		          for (int i = 0; i < int(arcs.size()); ++i) {
 		            snapshot.eraseEdge(arcs[i]);
+		          }
+		        }
 		        virtual void build() {
 		          Edge arc;
 		          std::vector<Edge> arcs;
 		          for (notifier()->first(arc); arc != INVALID;
 		               notifier()->next(arc)) {
 		            arcs.push_back(arc);
+		          }
 		          for (int i = arcs.size() - 1; i >= 0; --i) {
 		            snapshot.addEdge(arcs[i]);
+		          }
+		        }
 		        virtual void clear() {
 		          Edge arc;
 		          for (notifier()->first(arc); arc != INVALID;
 		               notifier()->next(arc)) {
 		            snapshot.eraseEdge(arc);
+		          }
+		        }
 		        Snapshot& snapshot;
 		      };
 		      ListGraph *digraph;
 		      NodeObserverProxy node_observer_proxy;
 		      EdgeObserverProxy arc_observer_proxy;
 		      std::list<Node> added_nodes;
 		      std::list<Edge> added_arcs;
 		      void addNode(const Node& node) {
 		        added_nodes.push_front(node);
+		      }
 		      void eraseNode(const Node& node) {
 		        std::list<Node>::iterator it =
 		          std::find(added_nodes.begin(), added_nodes.end(), node);
 		        if (it == added_nodes.end()) {
 		          clear();
 		          arc_observer_proxy.detach();
 		          throw NodeNotifier::ImmediateDetach();
 		        } else {
 		          added_nodes.erase(it);
+		        }
+		      }
 		      void addEdge(const Edge& arc) {
 		        added_arcs.push_front(arc);
+		      }
 		      void eraseEdge(const Edge& arc) {
 		        std::list<Edge>::iterator it =
 		          std::find(added_arcs.begin(), added_arcs.end(), arc);
 		        if (it == added_arcs.end()) {
 		          clear();
 		          node_observer_proxy.detach();
 		          throw EdgeNotifier::ImmediateDetach();
 		        } else {
 		          added_arcs.erase(it);
+		        }
+		      }
 		      void attach(ListGraph &_digraph) {
 			digraph = &_digraph;
 			node_observer_proxy.attach(digraph->notifier(Node()));
 		        arc_observer_proxy.attach(digraph->notifier(Edge()));
+		      }
 		      void detach() {
 			node_observer_proxy.detach();
 			arc_observer_proxy.detach();
+		      }
 		      bool attached() const {
 		        return node_observer_proxy.attached();
+		      }
 		      void clear() {
 		        added_nodes.clear();
 		        added_arcs.clear();
+		      }
 		    public:
 		      /// \brief Default constructor.
 		      ///
 		      /// Default constructor.
 		      /// To actually make a snapshot you must call save().
 		      Snapshot()
 		        : digraph(0), node_observer_proxy(*this),
 		          arc_observer_proxy(*this) {}
 		      /// \brief Constructor that immediately makes a snapshot.
 		      ///
 		      /// This constructor immediately makes a snapshot of the digraph.
 		      /// \param _digraph The digraph we make a snapshot of.
 		      Snapshot(ListGraph &_digraph)
 		        : node_observer_proxy(*this),
 		          arc_observer_proxy(*this) {
 			attach(_digraph);
+		      }
 		      /// \brief Make a snapshot.
 		      ///
 		      /// Make a snapshot of the digraph.
 		      ///
 		      /// This function can be called more than once. In case of a repeated
 		      /// call, the previous snapshot gets lost.
 		      /// \param _digraph The digraph we make the snapshot of.
 		      void save(ListGraph &_digraph) {
 		        if (attached()) {
 		          detach();
 		          clear();
+		        }
 		        attach(_digraph);
+		      }
 		      /// \brief Undo the changes until the last snapshot.
 		      //
 		      /// Undo the changes until the last snapshot created by save().
 		      void restore() {
 			detach();
 			for(std::list<Edge>::iterator it = added_arcs.begin();
 		            it != added_arcs.end(); ++it) {
 			  digraph->erase(*it);
+			}
 			for(std::list<Node>::iterator it = added_nodes.begin();
 		            it != added_nodes.end(); ++it) {
 			  digraph->erase(*it);
+			}
 		        clear();
+		      }
 		      /// \brief Gives back true when the snapshot is valid.
 		      ///
 		      /// Gives back true when the snapshot is valid.
 		      bool valid() const {
 		        return attached();
+		      }
 		    };
 		  };
 		  /// @}
 		} //namespace lemon
 		#endif

test/Makefile.am

Show inline comments

@@ -7,3 +7,5 @@
 		check_PROGRAMS += \
 			test/digraph_test \
 		        test/dim_test \
 			test/graph_test \
 		        test/random_test \
@@ -15,3 +17,5 @@
 		test_digraph_test_SOURCES = test/digraph_test.cc
 		test_dim_test_SOURCES = test/dim_test.cc
 		test_graph_test_SOURCES = test/graph_test.cc
 		test_random_test_SOURCES = test/random_test.cc

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