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Add functions to DateTime to add milliseconds and Duration #506

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merged 2 commits into from
Dec 12, 2024
Merged

Add functions to DateTime to add milliseconds and Duration #506

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897d7dc
Add functions to DateTime to add milliseconds and Duration
tyilo Dec 11, 2024
01eaa70
Make add functions const
tyilo Dec 11, 2024
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20 changes: 20 additions & 0 deletions src/datetime.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -363,6 +363,26 @@ impl crate::DateTime {
self.0
}

/// Adds `millis` milliseconds to the [`DateTime`] saturating at [`DateTime::MIN`] and
/// [`DateTime::MAX`].
pub const fn saturating_add_millis(self, millis: i64) -> Self {
Self::from_millis(self.0.saturating_add(millis))
}

/// Adds `duration` to the [`DateTime`] saturating at [`DateTime::MAX`].
///
/// As [`DateTime`] only have millisecond-precision this will only use the whole milliseconds
/// of `duration`.
pub const fn saturating_add_duration(self, duration: Duration) -> Self {
// i64::try_from isn't const
let millis = duration.as_millis();
if millis > i64::MAX as u128 {
Self::from_millis(i64::MAX)
} else {
self.saturating_add_millis(millis as i64)
}
}

#[deprecated(since = "2.3.0", note = "Use try_to_rfc3339_string instead.")]
/// Convert this [`DateTime`] to an RFC 3339 formatted string. Panics if it could not be
/// represented in that format.
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