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/* Copyright (c) 2024, MariaDB
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; version 2 of the License.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1335 USA */
#ifndef SQL_TYPE_TIMEOFDAY_INCLUDED
#define SQL_TYPE_TIMEOFDAY_INCLUDED
#include "my_time.h" // TIME_MAX_MINUTE
/*
This class stores a time of the day with
fractional precision up to 6 digits.
*/
class TimeOfDay6
{
uint m_hour; // 0..23
uint m_minute; // 0..59
uint m_second; // 0..59
uint m_usecond; // 0..999999
bool is_valid_time_of_day6() const
{
return m_hour <= 23 &&
m_minute <= TIME_MAX_MINUTE &&
m_second <= TIME_MAX_SECOND &&
m_usecond <= TIME_MAX_SECOND_PART;
}
public:
TimeOfDay6()
:m_hour(0), m_minute(0), m_second(0), m_usecond(0)
{ }
// This constructor assumes the caller passes valid 'hh:mm:ss.ff' values
TimeOfDay6(uint hour, uint minute, uint second, uint usecond)
:m_hour(hour), m_minute(minute), m_second(second), m_usecond(usecond)
{
DBUG_ASSERT(is_valid_time_of_day6());
}
uint hour() const { return m_hour; }
uint minute() const { return m_minute; }
uint second() const { return m_second; }
uint usecond() const { return m_usecond; }
/*
Return the last time of the day for the given precision, e.g.:
- '23:59:59.000000' for decimals==0
- '23:59:59.999000' for decimals==3
- '23:59:59.999999' for decimals==6
*/
static TimeOfDay6 end_of_day(decimal_digits_t decimals)
{
long rem= my_time_fraction_remainder(TIME_MAX_SECOND_PART, decimals);
DBUG_ASSERT(rem >= 0 && rem <= TIME_MAX_SECOND_PART);
return TimeOfDay6(23, TIME_MAX_MINUTE, TIME_MAX_SECOND,
(uint) (TIME_MAX_SECOND_PART - (uint) rem));
}
};
#endif // SQL_TYPE_TIMEOFDAY_INCLUDED
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