edgeGraphPart.h

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 *   Copyright (c) 2005-2026 by                                             *
 *       - Pierre-Henri WUILLEMIN(_at_LIP6)                                 *
 *       - Christophe GONZALES(_at_AMU)                                     *
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 *       - Pierre-Henri WUILLEMIN(_at_LIP6)                                 *
 *       - Christophe GONZALES(_at_AMU)                                     *
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#ifndef GUM_EDGE_GRAPH_PART_H
#define GUM_EDGE_GRAPH_PART_H
 
 
#include <algorithm>
#include <utility>
 
#include <agrum/agrum.h>
 
#include <agrum/base/core/signal/signalers.h>
#include <agrum/base/graphs/graphElements.h>
 
namespace gum {

 
  class EdgeGraphPart {
    public:
    using EdgeIterator = EdgeSetIterator;
 
    Signaler< NodeId, NodeId > onEdgeAdded;
    Signaler< NodeId, NodeId > onEdgeDeleted;
 
    // ############################################################################
    // ############################################################################


    explicit EdgeGraphPart(Size edges_size          = HashTableConst::default_size,
                           bool edges_resize_policy = true);


    EdgeGraphPart(const EdgeGraphPart& s);

    EdgeGraphPart(EdgeGraphPart&& s);

    virtual ~EdgeGraphPart();

 
    // ############################################################################
    // ############################################################################


    EdgeGraphPart& operator=(const EdgeGraphPart& s);

    EdgeGraphPart& operator=(EdgeGraphPart&& s);


    bool operator==(const EdgeGraphPart& p) const;
 
    // ############################################################################
    // ############################################################################


    virtual void addEdge(NodeId n1, NodeId n2);


    virtual void eraseEdge(const Edge& edge);


    bool existsEdge(const Edge& edge) const;


    bool existsEdge(NodeId n1, NodeId n2) const;

    bool emptyEdges() const;

    virtual void clearEdges();

    Size sizeEdges() const;

    const EdgeSet& edges() const;


    const NodeSet& neighbours(NodeId id) const;


    void eraseNeighbours(NodeId id);


    void unvirtualizedEraseNeighbours(NodeId id);

    virtual std::string toString() const;

    template < typename VAL >
    EdgeProperty< VAL > edgesProperty(VAL (*f)(const Edge&), Size size = 0) const;

    template < typename VAL >
    EdgeProperty< VAL > edgesProperty(const VAL& val, Size size = 0) const;

    template < typename VAL >
    List< VAL > listMapEdges(VAL (*f)(const Edge&)) const;

 
    private:
    EdgeSet _edges_;

    NodeProperty< NodeSet* > _neighbours_;

    void _checkNeighbours_(NodeId id);
 
    void _clearEdges_();
  };

  std::ostream& operator<<(std::ostream&, const EdgeGraphPart&);
 
} /* namespace gum */
 
#ifndef GUM_NO_INLINE
#  include <agrum/base/graphs/parts/edgeGraphPart_inl.h>
#endif   // GUM_NO_INLINE
 
#include <agrum/base/graphs/parts/edgeGraphPart_tpl.h>
 
#endif   // GUM_EDGE_GRAPH_PART_H