diff options
Diffstat (limited to 'src/date.rs')
| -rw-r--r-- | src/date.rs | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/src/date.rs b/src/date.rs index 194fd02..fc849f1 100644 --- a/src/date.rs +++ b/src/date.rs @@ -17,6 +17,9 @@ impl Date { /// The latest date which can be represented pub const MAX: Self = unsafe { Self::from_ymd_unchecked(Year::MAX, Month::December, 31) }; + pub const UNIX_EPOCH: Self = + unsafe { Self::from_ymd_unchecked(Year::from_i16(1970), Month::January, 1) }; + // TODO validated from_calendar_date /// Creates a date without checking to make sure that it's valid. @@ -34,29 +37,35 @@ impl Date { /// # Safety /// /// This function results in undefined behavior if the given date is not a real date + #[must_use] pub const unsafe fn from_ymd_unchecked(year: Year, month: Month, day: u8) -> Self { Self { year, month, day } } // TODO docs + #[must_use] pub const fn year(self) -> Year { self.year } + #[must_use] pub const fn month(self) -> Month { self.month } + #[must_use] pub const fn day(self) -> u8 { self.day } + #[must_use] pub const fn is_leap_year(self) -> bool { self.year.is_leap_year() } // TODO handle BCE properly + #[must_use] pub const fn days_after_common_era(self) -> isize { let year = self.year.wrapping_sub(1); let leap_years = (year.as_i16() / 4 - year.as_i16() / 100 + year.as_i16() / 400) as isize; @@ -66,6 +75,7 @@ impl Date { } // TODO test + #[must_use] pub const fn from_days_after_common_era(days: isize) -> Self { let era = days / 146097; // an era is a period of 400 year let day_of_era = days - (era * 146097); |