arcGraphPart.h

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 *   Copyright (c) 2005-2026 by                                             *
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 *       - Christophe GONZALES(_at_AMU)                                     *
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 *   SPDX-FileCopyrightText: Copyright 2005-2026                            *
 *       - Pierre-Henri WUILLEMIN(_at_LIP6)                                 *
 *       - Christophe GONZALES(_at_AMU)                                     *
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#ifndef GUM_ARC_GRAPH_PART_H
#define GUM_ARC_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 ArcGraphPart {
    public:
    using ArcIterator = ArcSetIterator;
 
    Signaler< NodeId, NodeId > onArcAdded;     // onArcAdded(tail,head)
    Signaler< NodeId, NodeId > onArcDeleted;   // onArcDeleted(tail,head)
 
    // ############################################################################
    // ############################################################################


    explicit ArcGraphPart(Size arcs_size          = HashTableConst::default_size,
                          bool arcs_resize_policy = true);


    ArcGraphPart(const ArcGraphPart& s);

    ArcGraphPart(ArcGraphPart&& s);

    virtual ~ArcGraphPart();

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


    ArcGraphPart& operator=(const ArcGraphPart& s);

    ArcGraphPart& operator=(ArcGraphPart&& s);


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


    virtual void addArc(NodeId tail, NodeId head);


    virtual void eraseArc(const Arc& arc);


    bool existsArc(const Arc& arc) const;


    bool existsArc(NodeId tail, NodeId head) const;

    bool emptyArcs() const;

    void clearArcs();

    Size sizeArcs() const;

    const ArcSet& arcs() const;


    const NodeSet& parents(NodeId id) const;

    NodeSet children(const NodeSet& ids) const;

    NodeSet parents(const NodeSet& ids) const;
 


    const NodeSet& children(NodeId id) const;


    void eraseParents(NodeId id);


    void unvirtualizedEraseParents(NodeId id);


    void eraseChildren(NodeId id);


    void unvirtualizedEraseChildren(NodeId id);

    std::string toString() const;

    template < typename VAL >
    ArcProperty< VAL > arcsProperty(VAL (*f)(const Arc&), Size size = 0) const;

    template < typename VAL >
    ArcProperty< VAL > arcsProperty(const VAL& a, Size size = 0) const;

    template < typename VAL >
    List< VAL > listMapArcs(VAL (*f)(const Arc&)) const;

 
    protected:

    void eraseSetOfArcs_(const ArcSet& set);


    void unvirtualizedEraseSetOfArcs_(const ArcSet& set);
 
    private:
    Set< Arc > _arcs_;

    NodeProperty< NodeSet* > _parents_;

    NodeProperty< NodeSet* > _children_;

    void _checkParents_(NodeId id);

    void _checkChildren_(NodeId id);
  };


  std::ostream& operator<<(std::ostream& s, const ArcGraphPart& a);
 
} /* namespace gum */
 
#ifndef GUM_NO_INLINE
#  include <agrum/base/graphs/parts/arcGraphPart_inl.h>
#endif   // GU%_NO_INLINE
 
#include <agrum/base/graphs/parts/arcGraphPart_tpl.h>
 
#endif   // GUM_ARC_GRAPH_PART_H