_1wire_id.h

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#ifndef __utl_com_1wire_id_h__
#define __utl_com_1wire_id_h__

#include <utl/core/impl.h>
#include <utl/container/id.h>

namespace utl {

   class _1wire_id_t : public id_t<uint8_t, 8> {

   public:
      _1wire_id_t () noexcept
         : id_t<uint8_t, 8> {0, 0, 0, 0, 0, 0, 0, 0} { }
      _1wire_id_t (const _1wire_id_t& id) noexcept {
         std::copy(id.begin(), id.end(), this->begin());
      }

      static constexpr const _1wire_id_t& nullDev () { return nullDev_; }

      uint8_t& family() noexcept { return front(); }
      const uint8_t& family() const noexcept { return front(); }

      uint8_t& crc8() noexcept { return back(); }
      const uint8_t& crc8() const noexcept { return back(); }

      static int compare (const _1wire_id_t& lhs, const _1wire_id_t& rhs) noexcept {
         auto p = std::mismatch (lhs.rbegin(), lhs.rend(), rhs.rbegin());
         if (p.first == lhs.rend())       return 0;
         else if (*p.first < *p.second)   return -1;
         else                             return 1;
      }

   private:
      static const _1wire_id_t nullDev_;
   };

   // Init static member
   const _1wire_id_t _1wire_id_t::nullDev_ { };

} // namespace tbx

#endif /* __utl_com_1wire_id_h__ */