UUID.hpp

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#ifndef GALAXY_UTILS_UUID_HPP_
#define GALAXY_UTILS_UUID_HPP_
 
#include <array>
#include <format>
 
namespace galaxy
{
    class UUID final
    {
    public:
        UUID();
 
        UUID(UUID&&) noexcept;
 
        [[maybe_unused]]
        UUID& operator=(UUID&&) noexcept;
 
        UUID(const UUID&) noexcept;
 
        [[maybe_unused]]
        UUID& operator=(const UUID&) noexcept;
 
        ~UUID() noexcept;
 
        [[nodiscard]]
        std::size_t hash() noexcept;
 
        [[nodiscard]]
        const std::string& str() const noexcept;
 
        [[nodiscard]]
        bool operator==(const UUID& rhs) noexcept;
 
        [[nodiscard]]
        bool operator!=(const UUID& rhs) noexcept;
 
    private:
        std::array<unsigned char, 16> m_uuid;
 
        std::string m_str;
    };
} // namespace galaxy
 
namespace std
{
    template<>
    struct hash<galaxy::UUID>
    {
        std::size_t operator()(galaxy::UUID& uuid) const noexcept
        {
            return uuid.hash();
        }
    };
} // namespace std
 
template<>
struct std::formatter<galaxy::UUID> : std::formatter<std::string>
{
    auto format(const galaxy::UUID& uuid, format_context& ctx) const noexcept
    {
        return std::formatter<std::string>::format(uuid.str(), ctx);
    }
};
 
#endif