multiDimImplementation.h

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 *   Copyright (c) 2005-2026 by                                             *
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 *       - Christophe GONZALES(_at_AMU)                                     *
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 *       - Pierre-Henri WUILLEMIN(_at_LIP6)                                 *
 *       - Christophe GONZALES(_at_AMU)                                     *
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#ifndef GUM_MULTI_DIM_IMPLEMENTATION_H
#define GUM_MULTI_DIM_IMPLEMENTATION_H
 
#include <vector>
 
#include <agrum/agrum.h>
 
#include <agrum/base/multidim/implementations/multiDimContainer.h>
 
namespace gum {
 
  // ===========================================================================
  // ===                    GUM_MULTI_DIM_IMPLEMENTATION                     ===
  // ===========================================================================
  template < typename GUM_ELEMENT >
  class MultiDimImplementation: public MultiDimContainer< GUM_ELEMENT > {
    public:
    // =========================================================================
    // =========================================================================

    MultiDimImplementation();

    MultiDimImplementation(const MultiDimImplementation< GUM_ELEMENT >& from);

    ~MultiDimImplementation() override;

    // =========================================================================
    // =========================================================================

    virtual const std::string& name() const = 0;

    const std::string& basename() const;

    virtual Size realSize() const = 0;

    float compressionRate() const;

    virtual const GUM_ELEMENT* data() const noexcept;

    virtual GUM_ELEMENT* data() noexcept;

    // ========================================================================
    // ========================================================================
    Idx nbrDim() const override;
 
    Size domainSize() const override;
 
    void add(const DiscreteVariable& v) override;
 
    void erase(const DiscreteVariable& v) override;
 
    const Sequence< const DiscreteVariable* >& variablesSequence() const override;
 
    const DiscreteVariable& variable(Idx i) const override;
    const DiscreteVariable& variable(std::string_view name) const override;
 
    Idx pos(const DiscreteVariable& v) const override;
 
    bool contains(const DiscreteVariable& v) const override;
 
    bool empty() const override;

    // =========================================================================
    // =========================================================================
 
    bool registerSlave(Instantiation& slave) override;
 
    bool unregisterSlave(Instantiation& slave) override;

    // =========================================================================
    // =========================================================================
 
    using MultiDimContainer< GUM_ELEMENT >::get;
 
    [[nodiscard]] MultiDimContainer< GUM_ELEMENT >* newFactory() const override = 0;
 
    void beginMultipleChanges() override;
 
    void endMultipleChanges() override;
 
    void endMultipleChanges(const GUM_ELEMENT&) override;

 
    protected:
    // =========================================================================
    // =========================================================================

    virtual void commitMultipleChanges_();

    virtual void commitMultipleChanges_(const GUM_ELEMENT& value);

    bool isInMultipleChangeMethod_() const;

    bool isCommitNeeded_() const;

    const List< Instantiation* >& slaves_() const;

    void replace_(const DiscreteVariable* x, const DiscreteVariable* y) override;

    virtual void invert_(Idx p1, Idx p2);


    const MultiDimImplementation< GUM_ELEMENT >* content() const final;

    MultiDimImplementation< GUM_ELEMENT >* content() final;
 
    private:
    Sequence< const DiscreteVariable* > _vars_;

    List< Instantiation* > _slaveInstantiations_;

    enum class _InternalChangeMethod_ : char { DIRECT_CHANGE, MULTIPLE_CHANGE };

    enum class _InternalChangeState_ : char { NO_CHANGE, NOT_COMMITTED_CHANGE };

    _InternalChangeMethod_ _internalChangeMethod_;

    _InternalChangeState_ _internalChangeState_;

    Size _domainSize_;

    void _setNotCommitedChange_();
  };

  template < typename GUM_ELEMENT >
  std::ostream& operator<<(std::ostream&, const MultiDimImplementation< GUM_ELEMENT >&);
 
} /* namespace gum */
 
#include <agrum/base/multidim/implementations/multiDimImplementation_tpl.h>
 
#endif /* GUM_MULTI_DIM_IMPLEMENTATION_H */