month_weekday.h

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/******************************************************************************
The MIT License(MIT)
 
Embedded Template Library.
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Copyright(c) 2025 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 month_weekday
    {
    public:
 
      //*************************************************************************
      //*************************************************************************
      ETL_CONSTEXPR14 month_weekday(const etl::chrono::month&           m_, 
                                    const etl::chrono::weekday_indexed& wdi_) ETL_NOEXCEPT
        : m(m_)
        , wdi(wdi_)
      {
      }
 
      //*************************************************************************
      //*************************************************************************
      ETL_NODISCARD
      ETL_CONSTEXPR14 etl::chrono::month month() const ETL_NOEXCEPT
      {
        return m;
      }
 
      //*************************************************************************
      //*************************************************************************
      ETL_NODISCARD
      ETL_CONSTEXPR14 etl::chrono::weekday_indexed weekday_indexed() const ETL_NOEXCEPT
      {
        return wdi;
      }
 
      //*************************************************************************
      //*************************************************************************
      ETL_NODISCARD
      ETL_CONSTEXPR14 bool ok() const ETL_NOEXCEPT
      {       
        return m.ok() && wdi.ok();
      }
 
    private:
 
      etl::chrono::month m;
      etl::chrono::weekday_indexed wdi;
    };
 
    //*************************************************************************
    //*************************************************************************
    inline ETL_CONSTEXPR14 bool operator ==(const etl::chrono::month_weekday& lhs, 
                                            const etl::chrono::month_weekday& rhs) ETL_NOEXCEPT
    {
      return (lhs.month() == rhs.month()) &&
             (lhs.weekday_indexed() == rhs.weekday_indexed());
    }
 
    //*************************************************************************
    //*************************************************************************
    inline ETL_CONSTEXPR14 bool operator !=(const etl::chrono::month_weekday& lhs, 
                                            const etl::chrono::month_weekday& rhs) ETL_NOEXCEPT
    {
      return !(lhs == rhs);
    }
 
    //*************************************************************************
    //*************************************************************************
    class month_weekday_last
    {
    public:
 
      //*************************************************************************
      //*************************************************************************
      ETL_CONSTEXPR14 month_weekday_last(const etl::chrono::month&        m_, 
                                       const etl::chrono::weekday_last& wdl_) ETL_NOEXCEPT
        : m(m_)
        , wdl(wdl_)
      {
      }
 
      //*************************************************************************
      //*************************************************************************
      ETL_NODISCARD
      ETL_CONSTEXPR14 etl::chrono::month month() const ETL_NOEXCEPT
      {
        return m;
      }
 
      //*************************************************************************
      //*************************************************************************
      ETL_NODISCARD
      ETL_CONSTEXPR14 etl::chrono::weekday_last weekday_last() const ETL_NOEXCEPT
      {
        return wdl;
      }
 
      //*************************************************************************
      //*************************************************************************
      ETL_NODISCARD
      ETL_CONSTEXPR14 bool ok() const ETL_NOEXCEPT
      {       
        return m.ok() && wdl.ok();
      }
 
    private:
 
      etl::chrono::month m;
      etl::chrono::weekday_last wdl;
    };  
 
    //*************************************************************************
    //*************************************************************************
    inline ETL_CONSTEXPR14 bool operator ==(const etl::chrono::month_weekday_last& lhs, 
                                            const etl::chrono::month_weekday_last& rhs) ETL_NOEXCEPT
    {
      return (lhs.month() == rhs.month()) && (lhs.weekday_last() == rhs.weekday_last());
    }
 
    //*************************************************************************
    //*************************************************************************
    inline ETL_CONSTEXPR14 bool operator !=(const etl::chrono::month_weekday_last& lhs, 
                                            const etl::chrono::month_weekday_last& rhs) ETL_NOEXCEPT
    {
      return !(lhs == rhs);
    }
  }
 
  //*************************************************************************
  //*************************************************************************
#if ETL_USING_8BIT_TYPES
  template <>
  struct hash<etl::chrono::month_weekday>
  {
    size_t operator()(const etl::chrono::month_weekday& mw) const
    {         
      etl::chrono::month::rep a = static_cast<etl::chrono::month::rep>(static_cast<unsigned>(mw.month()));
      unsigned int            b = mw.weekday_indexed().weekday().c_encoding();
      unsigned int            c = mw.weekday_indexed().index();
 
      uint8_t buffer[sizeof(a) + sizeof(b) + sizeof(c)];
 
      memcpy(buffer,             &a, sizeof(a));
      memcpy(buffer + sizeof(a), &b, sizeof(b));
      memcpy(buffer + sizeof(b), &b, sizeof(c));
 
      return etl::private_hash::generic_hash<size_t>(buffer, buffer + sizeof(a) + sizeof(b) + sizeof(c));
    }
  };
#endif
 
  //*************************************************************************
  //*************************************************************************
#if ETL_USING_8BIT_TYPES
  template <>
  struct hash<etl::chrono::month_weekday_last>
  {
    size_t operator()(const etl::chrono::month_weekday_last& mw) const
    {
      etl::chrono::month::rep a = static_cast<etl::chrono::month::rep>(static_cast<unsigned>(mw.month()));
      unsigned int            b = mw.weekday_last().weekday().c_encoding();
 
      uint8_t buffer[sizeof(a) + sizeof(b)];
 
      memcpy(buffer,             &a, sizeof(a));
      memcpy(buffer + sizeof(a), &b, sizeof(b));
 
      return etl::private_hash::generic_hash<size_t>(buffer, buffer + sizeof(a) + sizeof(b));
    }
  };
#endif
}