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kpeter (Peter Kovacs)
kpeter@inf.elte.hu
Doc improvements for the graph related tools in lemon/bits
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5 files changed with 63 insertions and 64 deletions:
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32 32

	
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  // \ingroup graphbits
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  //
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  // \brief Notifier class to notify observes about alterations in
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  // a container.
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  //
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  // The simple graph's can be refered as two containers, one node container
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  // and one edge container. But they are not standard containers they
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  // does not store values directly they are just key continars for more
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  // value containers which are the node and edge maps.
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  // The simple graphs can be refered as two containers: a node container
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  // and an edge container. But they do not store values directly, they
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  // are just key continars for more value containers, which are the
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  // node and edge maps.
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  //
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  // The graph's node and edge sets can be changed as we add or erase
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  // The node and edge sets of the graphs can be changed as we add or erase
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  // nodes and edges in the graph. LEMON would like to handle easily
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  // that the node and edge maps should contain values for all nodes or
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  // edges. If we want to check on every indicing if the map contains
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  // the current indicing key that cause a drawback in the performance
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  // in the library. We use another solution we notify all maps about
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  // in the library. We use another solution: we notify all maps about
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  // an alteration in the graph, which cause only drawback on the
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  // alteration of the graph.
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  //
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  // This class provides an interface to the container. The \e first() and \e
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  // next() member functions make possible to iterate on the keys of the
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  // container. The \e id() function returns an integer id for each key.
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  // The \e maxId() function gives back an upper bound of the ids.
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  // This class provides an interface to a node or edge container.
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  // The first() and next() member functions make possible
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  // to iterate on the keys of the container.
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  // The id() function returns an integer id for each key.
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  // The maxId() function gives back an upper bound of the ids.
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  //
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  // For the proper functonality of this class, we should notify it
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  // about each alteration in the container. The alterations have four type
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  // as \e add(), \e erase(), \e build() and \e clear(). The \e add() and
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  // \e erase() signals that only one or few items added or erased to or
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  // from the graph. If all items are erased from the graph or from an empty
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  // graph a new graph is builded then it can be signaled with the
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  // about each alteration in the container. The alterations have four type:
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  // add(), erase(), build() and clear(). The add() and
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  // erase() signal that only one or few items added or erased to or
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  // from the graph. If all items are erased from the graph or if a new graph
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  // is built from an empty graph, then it can be signaled with the
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  // clear() and build() members. Important rule that if we erase items
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  // from graph we should first signal the alteration and after that erase
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  // from graphs we should first signal the alteration and after that erase
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  // them from the container, on the other way on item addition we should
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  // first extend the container and just after that signal the alteration.
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  //
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  // The alteration can be observed with a class inherited from the
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  // \e ObserverBase nested class. The signals can be handled with
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  // ObserverBase nested class. The signals can be handled with
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  // overriding the virtual functions defined in the base class.  The
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  // observer base can be attached to the notifier with the
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  // \e attach() member and can be detached with detach() function. The
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  // attach() member and can be detached with detach() function. The
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  // alteration handlers should not call any function which signals
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  // an other alteration in the same notifier and should not
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  // detach any observer from the notifier.
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  //
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  // Alteration observers try to be exception safe. If an \e add() or
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  // a \e clear() function throws an exception then the remaining
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  // Alteration observers try to be exception safe. If an add() or
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  // a clear() function throws an exception then the remaining
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  // observeres will not be notified and the fulfilled additions will
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  // be rolled back by calling the \e erase() or \e clear()
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  // functions. Thence the \e erase() and \e clear() should not throw
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  // exception. Actullay, it can be throw only \ref ImmediateDetach
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  // exception which detach the observer from the notifier.
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  // be rolled back by calling the erase() or clear() functions.
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  // Hence erase() and clear() should not throw exception.
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  // Actullay, they can throw only \ref ImmediateDetach exception,
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  // which detach the observer from the notifier.
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  //
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  // There are some place when the alteration observing is not completly
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  // There are some cases, when the alteration observing is not completly
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  // reliable. If we want to carry out the node degree in the graph
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  // as in the \ref InDegMap and we use the reverseEdge that cause
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  // as in the \ref InDegMap and we use the reverseArc(), then it cause
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  // unreliable functionality. Because the alteration observing signals
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  // only erasing and adding but not the reversing it will stores bad
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  // degrees. The sub graph adaptors cannot signal the alterations because
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  // just a setting in the filter map can modify the graph and this cannot
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  // be watched in any way.
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  // only erasing and adding but not the reversing, it will stores bad
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  // degrees. Apart form that the subgraph adaptors cannot even signal
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  // the alterations because just a setting in the filter map can modify
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  // the graph and this cannot be watched in any way.
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  //
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  // \param _Container The container which is observed.
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  // \param _Item The item type which is obserbved.
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  template <typename _Container, typename _Item>
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  class AlterationNotifier {
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@@ -100,32 +101,31 @@
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    typedef True Notifier;
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    typedef _Container Container;
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    typedef _Item Item;
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    // \brief Exception which can be called from \e clear() and
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    // \e erase().
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    // \brief Exception which can be called from clear() and
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    // erase().
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    //
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    // From the \e clear() and \e erase() function only this
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    // From the clear() and erase() function only this
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    // exception is allowed to throw. The exception immediatly
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    // detaches the current observer from the notifier. Because the
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    // \e clear() and \e erase() should not throw other exceptions
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    // clear() and erase() should not throw other exceptions
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    // it can be used to invalidate the observer.
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    struct ImmediateDetach {};
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    // \brief ObserverBase is the base class for the observers.
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    //
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    // ObserverBase is the abstract base class for the observers.
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    // It will be notified about an item was inserted into or
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    // erased from the graph.
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    //
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    // The observer interface contains some pure virtual functions
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    // to override. The add() and erase() functions are
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    // to notify the oberver when one item is added or
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    // erased.
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    // to notify the oberver when one item is added or erased.
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    //
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    // The build() and clear() members are to notify the observer
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    // about the container is built from an empty container or
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    // is cleared to an empty container.
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    class ObserverBase {
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    protected:
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@@ -33,31 +33,30 @@
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namespace lemon {
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  // \ingroup graphbits
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  //
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  // \brief Graph map based on the array storage.
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  //
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  // The ArrayMap template class is graph map structure what
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  // automatically updates the map when a key is added to or erased from
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  // the map. This map uses the allocators to implement
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  // the container functionality.
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  // The ArrayMap template class is graph map structure that automatically
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  // updates the map when a key is added to or erased from the graph.
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  // This map uses the allocators to implement the container functionality.
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  //
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  // The template parameters are the Graph the current Item type and
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  // The template parameters are the Graph, the current Item type and
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  // the Value type of the map.
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  template <typename _Graph, typename _Item, typename _Value>
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  class ArrayMap
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    : public ItemSetTraits<_Graph, _Item>::ItemNotifier::ObserverBase {
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  public:
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    // The graph type of the maps.
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    // The graph type.
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    typedef _Graph Graph;
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    // The item type of the map.
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    // The item type.
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    typedef _Item Item;
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    // The reference map tag.
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    typedef True ReferenceMapTag;
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    // The key type of the maps.
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    // The key type of the map.
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    typedef _Item Key;
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    // The value type of the map.
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    typedef _Value Value;
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    // The const reference type of the map.
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    typedef const _Value& ConstReference;
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@@ -197,13 +196,13 @@
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    }
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  protected:
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    // \brief Adds a new key to the map.
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    //
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    // It adds a new key to the map. It called by the observer notifier
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    // It adds a new key to the map. It is called by the observer notifier
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    // and it overrides the add() member function of the observer base.
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    virtual void add(const Key& key) {
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      Notifier* nf = Parent::notifier();
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      int id = nf->id(key);
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      if (id >= capacity) {
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        int new_capacity = (capacity == 0 ? 1 : capacity);
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@@ -225,13 +224,13 @@
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      }
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      allocator.construct(&(values[id]), Value());
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    }
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    // \brief Adds more new keys to the map.
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    //
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    // It adds more new keys to the map. It called by the observer notifier
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    // It adds more new keys to the map. It is called by the observer notifier
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    // and it overrides the add() member function of the observer base.
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    virtual void add(const std::vector<Key>& keys) {
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      Notifier* nf = Parent::notifier();
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      int max_id = -1;
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      for (int i = 0; i < int(keys.size()); ++i) {
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        int id = nf->id(keys[i]);
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@@ -269,33 +268,33 @@
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        allocator.construct(&(values[id]), Value());
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      }
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    }
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    // \brief Erase a key from the map.
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    //
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    // Erase a key from the map. It called by the observer notifier
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    // Erase a key from the map. It is called by the observer notifier
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    // and it overrides the erase() member function of the observer base.
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    virtual void erase(const Key& key) {
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      int id = Parent::notifier()->id(key);
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      allocator.destroy(&(values[id]));
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    }
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    // \brief Erase more keys from the map.
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    //
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    // Erase more keys from the map. It called by the observer notifier
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    // Erase more keys from the map. It is called by the observer notifier
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    // and it overrides the erase() member function of the observer base.
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    virtual void erase(const std::vector<Key>& keys) {
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      for (int i = 0; i < int(keys.size()); ++i) {
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        int id = Parent::notifier()->id(keys[i]);
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        allocator.destroy(&(values[id]));
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      }
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    }
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    // \brief Buildes the map.
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    // \brief Builds the map.
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    //
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    // It buildes the map. It called by the observer notifier
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    // It builds the map. It is called by the observer notifier
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    // and it overrides the build() member function of the observer base.
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    virtual void build() {
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      Notifier* nf = Parent::notifier();
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      allocate_memory();
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      Item it;
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      for (nf->first(it); it != INVALID; nf->next(it)) {
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        allocator.construct(&(values[id]), Value());
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      }
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    }
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    // \brief Clear the map.
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    //
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    // It erase all items from the map. It called by the observer notifier
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    // It erase all items from the map. It is called by the observer notifier
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    // and it overrides the clear() member function of the observer base.
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    virtual void clear() {
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      Notifier* nf = Parent::notifier();
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      if (capacity != 0) {
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        Item it;
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        for (nf->first(it); it != INVALID; nf->next(it)) {
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#include <lemon/concept_check.h>
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#include <lemon/concepts/maps.h>
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//\ingroup digraphbits
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//\file
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//\brief Extenders for the digraph types
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//\brief Extenders for the graph types
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namespace lemon {
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  // \ingroup digraphbits
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  //
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  // \brief BaseDigraph to BaseGraph extender
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  template <typename Base>
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@@ -26,18 +26,18 @@
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#include <lemon/concept_check.h>
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#include <lemon/concepts/maps.h>
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//\ingroup graphbits
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//\file
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//\brief Extenders for the digraph types
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//\brief Extenders for the graph types
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namespace lemon {
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  // \ingroup graphbits
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  //
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  // \brief Extender for the Digraphs
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  // \brief Extender for the digraph implementations
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  template <typename Base>
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  class DigraphExtender : public Base {
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  public:
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    typedef Base Parent;
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    typedef DigraphExtender Digraph;
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@@ -35,15 +35,15 @@
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namespace lemon {
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  // \ingroup graphbits
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  //
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  // \brief Graph map based on the std::vector storage.
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  //
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  // The VectorMap template class is graph map structure what
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  // automatically updates the map when a key is added to or erased from
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  // the map. This map type uses the std::vector to store the values.
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  // The VectorMap template class is graph map structure that automatically
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  // updates the map when a key is added to or erased from the graph.
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  // This map type uses std::vector to store the values.
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  //
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  // \tparam _Graph The graph this map is attached to.
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  // \tparam _Item The item type of the graph items.
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  // \tparam _Value The value type of the map.
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  template <typename _Graph, typename _Item, typename _Value>
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  class VectorMap
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@@ -166,24 +166,24 @@
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    }
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  protected:
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    // \brief Adds a new key to the map.
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    //
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    // It adds a new key to the map. It called by the observer notifier
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    // It adds a new key to the map. It is called by the observer notifier
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    // and it overrides the add() member function of the observer base.
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    virtual void add(const Key& key) {
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      int id = Parent::notifier()->id(key);
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      if (id >= int(container.size())) {
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        container.resize(id + 1);
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      }
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    }
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    // \brief Adds more new keys to the map.
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    //
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    // It adds more new keys to the map. It called by the observer notifier
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    // It adds more new keys to the map. It is called by the observer notifier
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    // and it overrides the add() member function of the observer base.
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    virtual void add(const std::vector<Key>& keys) {
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      int max = container.size() - 1;
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      for (int i = 0; i < int(keys.size()); ++i) {
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        int id = Parent::notifier()->id(keys[i]);
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        if (id >= max) {
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@@ -192,41 +192,41 @@
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      }
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      container.resize(max + 1);
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    }
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    // \brief Erase a key from the map.
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    //
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    // Erase a key from the map. It called by the observer notifier
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    // Erase a key from the map. It is called by the observer notifier
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    // and it overrides the erase() member function of the observer base.
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    virtual void erase(const Key& key) {
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      container[Parent::notifier()->id(key)] = Value();
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    }
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    // \brief Erase more keys from the map.
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    //
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    // Erase more keys from the map. It called by the observer notifier
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    // It erases more keys from the map. It is called by the observer notifier
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    // and it overrides the erase() member function of the observer base.
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    virtual void erase(const std::vector<Key>& keys) {
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      for (int i = 0; i < int(keys.size()); ++i) {
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        container[Parent::notifier()->id(keys[i])] = Value();
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      }
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    }
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    // \brief Buildes the map.
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    // \brief Build the map.
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    //
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    // It buildes the map. It called by the observer notifier
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    // It builds the map. It is called by the observer notifier
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    // and it overrides the build() member function of the observer base.
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    virtual void build() {
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      int size = Parent::notifier()->maxId() + 1;
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      container.reserve(size);
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      container.resize(size);
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    }
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    // \brief Clear the map.
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    //
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    // It erase all items from the map. It called by the observer notifier
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    // It erases all items from the map. It is called by the observer notifier
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    // and it overrides the clear() member function of the observer base.
228 228
    virtual void clear() {
229 229
      container.clear();
230 230
    }
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  private:
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