day.h

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/******************************************************************************
The MIT License(MIT)
 
Embedded Template Library.
https://github.com/ETLCPP/etl
https://www.etlcpp.com
 
Copyright(c) 2023 John Wellbelove
 
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#ifndef ETL_IN_CHRONO_H
  #error DO NOT DIRECTLY INCLUDE THIS FILE. USE CHRONO.H
#endif
 
namespace etl
{
  namespace chrono
  {
    //***********************************************************************
    //***********************************************************************
    class day
    {
    public:
 
      using rep = uint_least8_t;
 
      //***********************************************************************
      //***********************************************************************
      ETL_CONSTEXPR day() ETL_NOEXCEPT
        : value(0)
      {
      }
 
      //***********************************************************************
      //***********************************************************************
      ETL_CONSTEXPR explicit day(unsigned value_) ETL_NOEXCEPT
        : value(static_cast<rep>(value_))
      {
      }
 
      //***********************************************************************
      //***********************************************************************
      ETL_CONSTEXPR14 etl::chrono::day& operator++() ETL_NOEXCEPT
      {
        ++value;
 
        return *this;
      }
 
      //***********************************************************************
      //***********************************************************************
      ETL_CONSTEXPR14 etl::chrono::day operator++(int) ETL_NOEXCEPT
      {
        etl::chrono::day temp = *this;
        ++value;
 
        return temp;
      }
 
      //***********************************************************************
      //***********************************************************************
      ETL_CONSTEXPR14 etl::chrono::day& operator--() ETL_NOEXCEPT
      {
        --value;
 
        return *this;
      }
 
      //***********************************************************************
      //***********************************************************************
      ETL_CONSTEXPR14 etl::chrono::day operator--(int) ETL_NOEXCEPT
      {
        etl::chrono::day temp = *this;
        --value;
 
        return temp;
      }
 
      //***********************************************************************
      //***********************************************************************
      ETL_CONSTEXPR14 etl::chrono::day& operator+=(const etl::chrono::days& ds) ETL_NOEXCEPT
      {
        value += static_cast<rep>(ds.count());
 
        return *this;
      }
 
      //***********************************************************************
      //***********************************************************************
      ETL_CONSTEXPR14 etl::chrono::day& operator-=(const etl::chrono::days& ds) ETL_NOEXCEPT
      {
        value -= static_cast<rep>(ds.count());
 
        return *this;
      }
 
      //***********************************************************************
      //***********************************************************************
      ETL_NODISCARD ETL_CONSTEXPR14 bool ok() const ETL_NOEXCEPT
      {
        return (value >= 1U) && (value <= 31U);
      }
 
      //***********************************************************************
      //***********************************************************************
      ETL_CONSTEXPR14 /*explicit*/ operator unsigned() const ETL_NOEXCEPT
      {
        return value;
      }
 
      //***********************************************************************
      //***********************************************************************
      ETL_NODISCARD ETL_CONSTEXPR14 int compare(const day& other) const ETL_NOEXCEPT
      {
        if (value < other.value)
          return -1;
        if (value > other.value)
          return 1;
 
        return 0;
      }
 
    private:
 
      rep value;
    };
 
    //***********************************************************************
    //***********************************************************************
    inline ETL_CONSTEXPR14 bool operator==(const etl::chrono::day& d1, const etl::chrono::day& d2) ETL_NOEXCEPT
    {
      return (static_cast<unsigned>(d1) == static_cast<unsigned>(d2));
    }
 
    //***********************************************************************
    //***********************************************************************
    inline ETL_CONSTEXPR14 bool operator!=(const etl::chrono::day& d1, const etl::chrono::day& d2) ETL_NOEXCEPT
    {
      return !(d1 == d2);
    }
 
    //***********************************************************************
    //***********************************************************************
    inline ETL_CONSTEXPR14 bool operator<(const etl::chrono::day& d1, const etl::chrono::day& d2) ETL_NOEXCEPT
    {
      return (static_cast<unsigned>(d1) < static_cast<unsigned>(d2));
    }
 
    //***********************************************************************
    //***********************************************************************
    inline ETL_CONSTEXPR14 bool operator<=(const etl::chrono::day& d1, const etl::chrono::day& d2) ETL_NOEXCEPT
    {
      return (static_cast<unsigned>(d1) <= static_cast<unsigned>(d2));
    }
 
    //***********************************************************************
    //***********************************************************************
    inline ETL_CONSTEXPR14 bool operator>(const etl::chrono::day& d1, const etl::chrono::day& d2) ETL_NOEXCEPT
    {
      return (static_cast<unsigned>(d1) > static_cast<unsigned>(d2));
    }
 
    //***********************************************************************
    //***********************************************************************
    inline ETL_CONSTEXPR14 bool operator>=(const etl::chrono::day& d1, const etl::chrono::day& d2) ETL_NOEXCEPT
    {
      return (static_cast<unsigned>(d1) >= static_cast<unsigned>(d2));
    }
 
    //***********************************************************************
    //***********************************************************************
#if ETL_USING_CPP20
    [[nodiscard]]
    inline constexpr auto operator<=>(const etl::chrono::day& d1, const etl::chrono::day& d2) ETL_NOEXCEPT
    {
      return (static_cast<unsigned>(d1) <=> static_cast<unsigned>(d2));
    }
#endif
 
    //***********************************************************************
    //***********************************************************************
    inline ETL_CONSTEXPR14 etl::chrono::day operator+(const etl::chrono::day& d, const etl::chrono::days& ds) ETL_NOEXCEPT
    {
      etl::chrono::day result(d);
 
      result += ds;
 
      return result;
    }
 
    //***********************************************************************
    //***********************************************************************
    inline ETL_CONSTEXPR14 etl::chrono::day operator+(const etl::chrono::days& ds, const etl::chrono::day& d) ETL_NOEXCEPT
    {
      etl::chrono::day result(d);
 
      result += ds;
 
      return result;
    }
 
    //***********************************************************************
    //***********************************************************************
    inline ETL_CONSTEXPR14 etl::chrono::day operator-(const etl::chrono::day& d, const etl::chrono::days& ds) ETL_NOEXCEPT
    {
      etl::chrono::day result(d);
 
      result -= ds;
 
      return result;
    }
 
    //***********************************************************************
    //***********************************************************************
    inline ETL_CONSTEXPR14 etl::chrono::days operator-(const etl::chrono::day& d1, const etl::chrono::day& d2) ETL_NOEXCEPT
    {
      return etl::chrono::days(static_cast<int>(static_cast<unsigned>(d1)) - static_cast<int>(static_cast<unsigned>(d2)));
    }
  } // namespace chrono
 
  //*************************************************************************
  //*************************************************************************
#if ETL_USING_8BIT_TYPES
  template <>
  struct hash<etl::chrono::day>
  {
    size_t operator()(const etl::chrono::day& d) const
    {
      etl::chrono::day::rep value = static_cast<etl::chrono::day::rep>(static_cast<unsigned>(d));
      const uint8_t*        p     = reinterpret_cast<const uint8_t*>(&value);
 
      return etl::private_hash::generic_hash<size_t>(p, p + sizeof(value));
    }
  };
#endif
} // namespace etl
 
#if ETL_HAS_CHRONO_LITERALS_DAY
namespace etl
{
  inline namespace literals
  {
    inline namespace chrono_literals
    {
  #if ETL_USING_VERBOSE_CHRONO_LITERALS
      inline ETL_CONSTEXPR14 etl::chrono::day operator""_day(unsigned long long d) ETL_NOEXCEPT
  #else
      inline ETL_CONSTEXPR14 etl::chrono::day operator""_d(unsigned long long d) ETL_NOEXCEPT
  #endif
      {
        return etl::chrono::day(static_cast<unsigned>(d));
      }
    } // namespace chrono_literals
  } // namespace literals
} // namespace etl
#endif