entry.hpp

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#if !defined(TETENGO_LATTICE_ENTRY_HPP)
#define TETENGO_LATTICE_ENTRY_HPP
 
#include <any>
#include <memory>
#include <utility>
 
#include <tetengo/lattice/input.hpp>
 
 
namespace tetengo::lattice
{
    class entry_view;
 
 
    class entry
    {
    public:
        // static functions
 
        [[nodiscard]] static const entry& bos_eos();
 
 
        // constructors
 
        entry(std::unique_ptr<input>&& p_key, std::any value, int cost);
 
        entry(const entry_view& view);
 
        entry(const entry& another);
 
        entry(entry&& another);
 
 
        // functions
 
        [[nodiscard]] const input* p_key() const;
 
        [[nodiscard]] const std::any& value() const;
 
        [[nodiscard]] int cost() const;
 
 
    private:
        // variables
 
        std::unique_ptr<input> m_p_key;
 
        std::any m_value;
 
        int m_cost;
    };
 
 
    class entry_view
    {
    public:
        // static functions
 
        [[nodiscard]] static const entry_view& bos_eos();
 
 
        // constructors
 
        constexpr entry_view(const input* p_key, const std::any* value, int cost) :
        m_p_key{ p_key },
        m_value{ std::move(value) },
        m_cost{ cost }
        {}
 
        entry_view(const entry& entry);
 
 
        // functions
 
        [[nodiscard]] constexpr const input* p_key() const
        {
            return m_p_key;
        }
 
        [[nodiscard]] constexpr const std::any* value() const
        {
            return m_value;
        }
 
        [[nodiscard]] constexpr int cost() const
        {
            return m_cost;
        }
 
 
    private:
        // variables
 
        const input* m_p_key;
 
        const std::any* m_value;
 
        int m_cost;
    };
 
 
}
 
 
#endif