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Diffstat (limited to 'third_party/rust/time/src/primitive_date_time.rs')
| -rw-r--r-- | third_party/rust/time/src/primitive_date_time.rs | 937 |
1 files changed, 937 insertions, 0 deletions
diff --git a/third_party/rust/time/src/primitive_date_time.rs b/third_party/rust/time/src/primitive_date_time.rs new file mode 100644 index 0000000000..6e842092ab --- /dev/null +++ b/third_party/rust/time/src/primitive_date_time.rs @@ -0,0 +1,937 @@ +//! The [`PrimitiveDateTime`] struct and its associated `impl`s. + +use core::fmt; +use core::ops::{Add, Sub}; +use core::time::Duration as StdDuration; +#[cfg(feature = "formatting")] +use std::io; + +#[cfg(feature = "formatting")] +use crate::formatting::Formattable; +#[cfg(feature = "parsing")] +use crate::parsing::Parsable; +use crate::{error, util, Date, Duration, Month, OffsetDateTime, Time, UtcOffset, Weekday}; + +/// Combined date and time. +#[derive(Clone, Copy, PartialEq, Eq, Hash, PartialOrd, Ord)] +pub struct PrimitiveDateTime { + #[allow(clippy::missing_docs_in_private_items)] + pub(crate) date: Date, + #[allow(clippy::missing_docs_in_private_items)] + pub(crate) time: Time, +} + +impl PrimitiveDateTime { + /// The smallest value that can be represented by `PrimitiveDateTime`. + /// + /// Depending on `large-dates` feature flag, value of this constant may vary. + /// + /// 1. With `large-dates` disabled it is equal to `-9999-01-01 00:00:00.0` + /// 2. With `large-dates` enabled it is equal to `-999999-01-01 00:00:00.0` + /// + /// ```rust + /// # use time::PrimitiveDateTime; + /// # use time_macros::datetime; + #[cfg_attr( + feature = "large-dates", + doc = "// Assuming `large-dates` feature is enabled." + )] + #[cfg_attr( + feature = "large-dates", + doc = "assert_eq!(PrimitiveDateTime::MIN, datetime!(-999999-01-01 0:00));" + )] + #[cfg_attr( + not(feature = "large-dates"), + doc = "// Assuming `large-dates` feature is disabled." + )] + #[cfg_attr( + not(feature = "large-dates"), + doc = "assert_eq!(PrimitiveDateTime::MIN, datetime!(-9999-01-01 0:00));" + )] + /// ``` + pub const MIN: Self = Self::new(Date::MIN, Time::MIN); + + /// The largest value that can be represented by `PrimitiveDateTime`. + /// + /// Depending on `large-dates` feature flag, value of this constant may vary. + /// + /// 1. With `large-dates` disabled it is equal to `9999-12-31 23:59:59.999_999_999` + /// 2. With `large-dates` enabled it is equal to `999999-12-31 23:59:59.999_999_999` + /// + /// ```rust + /// # use time::PrimitiveDateTime; + /// # use time_macros::datetime; + #[cfg_attr( + feature = "large-dates", + doc = "// Assuming `large-dates` feature is enabled." + )] + #[cfg_attr( + feature = "large-dates", + doc = "assert_eq!(PrimitiveDateTime::MAX, datetime!(+999999-12-31 23:59:59.999_999_999));" + )] + #[cfg_attr( + not(feature = "large-dates"), + doc = "// Assuming `large-dates` feature is disabled." + )] + #[cfg_attr( + not(feature = "large-dates"), + doc = "assert_eq!(PrimitiveDateTime::MAX, datetime!(+9999-12-31 23:59:59.999_999_999));" + )] + /// ``` + pub const MAX: Self = Self::new(Date::MAX, Time::MAX); + + /// Create a new `PrimitiveDateTime` from the provided [`Date`] and [`Time`]. + /// + /// ```rust + /// # use time::PrimitiveDateTime; + /// # use time_macros::{date, datetime, time}; + /// assert_eq!( + /// PrimitiveDateTime::new(date!(2019-01-01), time!(0:00)), + /// datetime!(2019-01-01 0:00), + /// ); + /// ``` + pub const fn new(date: Date, time: Time) -> Self { + Self { date, time } + } + + // region: component getters + /// Get the [`Date`] component of the `PrimitiveDateTime`. + /// + /// ```rust + /// # use time_macros::{date, datetime}; + /// assert_eq!(datetime!(2019-01-01 0:00).date(), date!(2019-01-01)); + /// ``` + pub const fn date(self) -> Date { + self.date + } + + /// Get the [`Time`] component of the `PrimitiveDateTime`. + /// + /// ```rust + /// # use time_macros::{datetime, time}; + /// assert_eq!(datetime!(2019-01-01 0:00).time(), time!(0:00)); + pub const fn time(self) -> Time { + self.time + } + // endregion component getters + + // region: date getters + /// Get the year of the date. + /// + /// ```rust + /// # use time_macros::datetime; + /// assert_eq!(datetime!(2019-01-01 0:00).year(), 2019); + /// assert_eq!(datetime!(2019-12-31 0:00).year(), 2019); + /// assert_eq!(datetime!(2020-01-01 0:00).year(), 2020); + /// ``` + pub const fn year(self) -> i32 { + self.date.year() + } + + /// Get the month of the date. + /// + /// ```rust + /// # use time::Month; + /// # use time_macros::datetime; + /// assert_eq!(datetime!(2019-01-01 0:00).month(), Month::January); + /// assert_eq!(datetime!(2019-12-31 0:00).month(), Month::December); + /// ``` + pub const fn month(self) -> Month { + self.date.month() + } + + /// Get the day of the date. + /// + /// The returned value will always be in the range `1..=31`. + /// + /// ```rust + /// # use time_macros::datetime; + /// assert_eq!(datetime!(2019-01-01 0:00).day(), 1); + /// assert_eq!(datetime!(2019-12-31 0:00).day(), 31); + /// ``` + pub const fn day(self) -> u8 { + self.date.day() + } + + /// Get the day of the year. + /// + /// The returned value will always be in the range `1..=366` (`1..=365` for common years). + /// + /// ```rust + /// # use time_macros::datetime; + /// assert_eq!(datetime!(2019-01-01 0:00).ordinal(), 1); + /// assert_eq!(datetime!(2019-12-31 0:00).ordinal(), 365); + /// ``` + pub const fn ordinal(self) -> u16 { + self.date.ordinal() + } + + /// Get the ISO week number. + /// + /// The returned value will always be in the range `1..=53`. + /// + /// ```rust + /// # use time_macros::datetime; + /// assert_eq!(datetime!(2019-01-01 0:00).iso_week(), 1); + /// assert_eq!(datetime!(2019-10-04 0:00).iso_week(), 40); + /// assert_eq!(datetime!(2020-01-01 0:00).iso_week(), 1); + /// assert_eq!(datetime!(2020-12-31 0:00).iso_week(), 53); + /// assert_eq!(datetime!(2021-01-01 0:00).iso_week(), 53); + /// ``` + pub const fn iso_week(self) -> u8 { + self.date.iso_week() + } + + /// Get the week number where week 1 begins on the first Sunday. + /// + /// The returned value will always be in the range `0..=53`. + /// + /// ```rust + /// # use time_macros::datetime; + /// assert_eq!(datetime!(2019-01-01 0:00).sunday_based_week(), 0); + /// assert_eq!(datetime!(2020-01-01 0:00).sunday_based_week(), 0); + /// assert_eq!(datetime!(2020-12-31 0:00).sunday_based_week(), 52); + /// assert_eq!(datetime!(2021-01-01 0:00).sunday_based_week(), 0); + /// ``` + pub const fn sunday_based_week(self) -> u8 { + self.date.sunday_based_week() + } + + /// Get the week number where week 1 begins on the first Monday. + /// + /// The returned value will always be in the range `0..=53`. + /// + /// ```rust + /// # use time_macros::datetime; + /// assert_eq!(datetime!(2019-01-01 0:00).monday_based_week(), 0); + /// assert_eq!(datetime!(2020-01-01 0:00).monday_based_week(), 0); + /// assert_eq!(datetime!(2020-12-31 0:00).monday_based_week(), 52); + /// assert_eq!(datetime!(2021-01-01 0:00).monday_based_week(), 0); + /// ``` + pub const fn monday_based_week(self) -> u8 { + self.date.monday_based_week() + } + + /// Get the year, month, and day. + /// + /// ```rust + /// # use time::Month; + /// # use time_macros::datetime; + /// assert_eq!( + /// datetime!(2019-01-01 0:00).to_calendar_date(), + /// (2019, Month::January, 1) + /// ); + /// ``` + pub const fn to_calendar_date(self) -> (i32, Month, u8) { + self.date.to_calendar_date() + } + + /// Get the year and ordinal day number. + /// + /// ```rust + /// # use time_macros::datetime; + /// assert_eq!(datetime!(2019-01-01 0:00).to_ordinal_date(), (2019, 1)); + /// ``` + pub const fn to_ordinal_date(self) -> (i32, u16) { + self.date.to_ordinal_date() + } + + /// Get the ISO 8601 year, week number, and weekday. + /// + /// ```rust + /// # use time::Weekday::*; + /// # use time_macros::datetime; + /// assert_eq!( + /// datetime!(2019-01-01 0:00).to_iso_week_date(), + /// (2019, 1, Tuesday) + /// ); + /// assert_eq!( + /// datetime!(2019-10-04 0:00).to_iso_week_date(), + /// (2019, 40, Friday) + /// ); + /// assert_eq!( + /// datetime!(2020-01-01 0:00).to_iso_week_date(), + /// (2020, 1, Wednesday) + /// ); + /// assert_eq!( + /// datetime!(2020-12-31 0:00).to_iso_week_date(), + /// (2020, 53, Thursday) + /// ); + /// assert_eq!( + /// datetime!(2021-01-01 0:00).to_iso_week_date(), + /// (2020, 53, Friday) + /// ); + /// ``` + pub const fn to_iso_week_date(self) -> (i32, u8, Weekday) { + self.date.to_iso_week_date() + } + + /// Get the weekday. + /// + /// ```rust + /// # use time::Weekday::*; + /// # use time_macros::datetime; + /// assert_eq!(datetime!(2019-01-01 0:00).weekday(), Tuesday); + /// assert_eq!(datetime!(2019-02-01 0:00).weekday(), Friday); + /// assert_eq!(datetime!(2019-03-01 0:00).weekday(), Friday); + /// assert_eq!(datetime!(2019-04-01 0:00).weekday(), Monday); + /// assert_eq!(datetime!(2019-05-01 0:00).weekday(), Wednesday); + /// assert_eq!(datetime!(2019-06-01 0:00).weekday(), Saturday); + /// assert_eq!(datetime!(2019-07-01 0:00).weekday(), Monday); + /// assert_eq!(datetime!(2019-08-01 0:00).weekday(), Thursday); + /// assert_eq!(datetime!(2019-09-01 0:00).weekday(), Sunday); + /// assert_eq!(datetime!(2019-10-01 0:00).weekday(), Tuesday); + /// assert_eq!(datetime!(2019-11-01 0:00).weekday(), Friday); + /// assert_eq!(datetime!(2019-12-01 0:00).weekday(), Sunday); + /// ``` + pub const fn weekday(self) -> Weekday { + self.date.weekday() + } + + /// Get the Julian day for the date. The time is not taken into account for this calculation. + /// + /// The algorithm to perform this conversion is derived from one provided by Peter Baum; it is + /// freely available [here](https://www.researchgate.net/publication/316558298_Date_Algorithms). + /// + /// ```rust + /// # use time_macros::datetime; + /// assert_eq!(datetime!(-4713-11-24 0:00).to_julian_day(), 0); + /// assert_eq!(datetime!(2000-01-01 0:00).to_julian_day(), 2_451_545); + /// assert_eq!(datetime!(2019-01-01 0:00).to_julian_day(), 2_458_485); + /// assert_eq!(datetime!(2019-12-31 0:00).to_julian_day(), 2_458_849); + /// ``` + pub const fn to_julian_day(self) -> i32 { + self.date.to_julian_day() + } + // endregion date getters + + // region: time getters + /// Get the clock hour, minute, and second. + /// + /// ```rust + /// # use time_macros::datetime; + /// assert_eq!(datetime!(2020-01-01 0:00:00).as_hms(), (0, 0, 0)); + /// assert_eq!(datetime!(2020-01-01 23:59:59).as_hms(), (23, 59, 59)); + /// ``` + pub const fn as_hms(self) -> (u8, u8, u8) { + self.time.as_hms() + } + + /// Get the clock hour, minute, second, and millisecond. + /// + /// ```rust + /// # use time_macros::datetime; + /// assert_eq!(datetime!(2020-01-01 0:00:00).as_hms_milli(), (0, 0, 0, 0)); + /// assert_eq!( + /// datetime!(2020-01-01 23:59:59.999).as_hms_milli(), + /// (23, 59, 59, 999) + /// ); + /// ``` + pub const fn as_hms_milli(self) -> (u8, u8, u8, u16) { + self.time.as_hms_milli() + } + + /// Get the clock hour, minute, second, and microsecond. + /// + /// ```rust + /// # use time_macros::datetime; + /// assert_eq!(datetime!(2020-01-01 0:00:00).as_hms_micro(), (0, 0, 0, 0)); + /// assert_eq!( + /// datetime!(2020-01-01 23:59:59.999_999).as_hms_micro(), + /// (23, 59, 59, 999_999) + /// ); + /// ``` + pub const fn as_hms_micro(self) -> (u8, u8, u8, u32) { + self.time.as_hms_micro() + } + + /// Get the clock hour, minute, second, and nanosecond. + /// + /// ```rust + /// # use time_macros::datetime; + /// assert_eq!(datetime!(2020-01-01 0:00:00).as_hms_nano(), (0, 0, 0, 0)); + /// assert_eq!( + /// datetime!(2020-01-01 23:59:59.999_999_999).as_hms_nano(), + /// (23, 59, 59, 999_999_999) + /// ); + /// ``` + pub const fn as_hms_nano(self) -> (u8, u8, u8, u32) { + self.time.as_hms_nano() + } + + /// Get the clock hour. + /// + /// The returned value will always be in the range `0..24`. + /// + /// ```rust + /// # use time_macros::datetime; + /// assert_eq!(datetime!(2019-01-01 0:00).hour(), 0); + /// assert_eq!(datetime!(2019-01-01 23:59:59).hour(), 23); + /// ``` + pub const fn hour(self) -> u8 { + self.time.hour() + } + + /// Get the minute within the hour. + /// + /// The returned value will always be in the range `0..60`. + /// + /// ```rust + /// # use time_macros::datetime; + /// assert_eq!(datetime!(2019-01-01 0:00).minute(), 0); + /// assert_eq!(datetime!(2019-01-01 23:59:59).minute(), 59); + /// ``` + pub const fn minute(self) -> u8 { + self.time.minute() + } + + /// Get the second within the minute. + /// + /// The returned value will always be in the range `0..60`. + /// + /// ```rust + /// # use time_macros::datetime; + /// assert_eq!(datetime!(2019-01-01 0:00).second(), 0); + /// assert_eq!(datetime!(2019-01-01 23:59:59).second(), 59); + /// ``` + pub const fn second(self) -> u8 { + self.time.second() + } + + /// Get the milliseconds within the second. + /// + /// The returned value will always be in the range `0..1_000`. + /// + /// ```rust + /// # use time_macros::datetime; + /// assert_eq!(datetime!(2019-01-01 0:00).millisecond(), 0); + /// assert_eq!(datetime!(2019-01-01 23:59:59.999).millisecond(), 999); + /// ``` + pub const fn millisecond(self) -> u16 { + self.time.millisecond() + } + + /// Get the microseconds within the second. + /// + /// The returned value will always be in the range `0..1_000_000`. + /// + /// ```rust + /// # use time_macros::datetime; + /// assert_eq!(datetime!(2019-01-01 0:00).microsecond(), 0); + /// assert_eq!( + /// datetime!(2019-01-01 23:59:59.999_999).microsecond(), + /// 999_999 + /// ); + /// ``` + pub const fn microsecond(self) -> u32 { + self.time.microsecond() + } + + /// Get the nanoseconds within the second. + /// + /// The returned value will always be in the range `0..1_000_000_000`. + /// + /// ```rust + /// # use time_macros::datetime; + /// assert_eq!(datetime!(2019-01-01 0:00).nanosecond(), 0); + /// assert_eq!( + /// datetime!(2019-01-01 23:59:59.999_999_999).nanosecond(), + /// 999_999_999, + /// ); + /// ``` + pub const fn nanosecond(self) -> u32 { + self.time.nanosecond() + } + // endregion time getters + + // region: attach offset + /// Assuming that the existing `PrimitiveDateTime` represents a moment in the provided + /// [`UtcOffset`], return an [`OffsetDateTime`]. + /// + /// ```rust + /// # use time_macros::{datetime, offset}; + /// assert_eq!( + /// datetime!(2019-01-01 0:00) + /// .assume_offset(offset!(UTC)) + /// .unix_timestamp(), + /// 1_546_300_800, + /// ); + /// assert_eq!( + /// datetime!(2019-01-01 0:00) + /// .assume_offset(offset!(-1)) + /// .unix_timestamp(), + /// 1_546_304_400, + /// ); + /// ``` + pub const fn assume_offset(self, offset: UtcOffset) -> OffsetDateTime { + OffsetDateTime { + local_datetime: self, + offset, + } + } + + /// Assuming that the existing `PrimitiveDateTime` represents a moment in UTC, return an + /// [`OffsetDateTime`]. + /// + /// ```rust + /// # use time_macros::datetime; + /// assert_eq!( + /// datetime!(2019-01-01 0:00).assume_utc().unix_timestamp(), + /// 1_546_300_800, + /// ); + /// ``` + pub const fn assume_utc(self) -> OffsetDateTime { + self.assume_offset(UtcOffset::UTC) + } + // endregion attach offset + + // region: checked arithmetic + /// Computes `self + duration`, returning `None` if an overflow occurred. + /// + /// ``` + /// # use time::{Date, ext::NumericalDuration}; + /// # use time_macros::datetime; + /// let datetime = Date::MIN.midnight(); + /// assert_eq!(datetime.checked_add((-2).days()), None); + /// + /// let datetime = Date::MAX.midnight(); + /// assert_eq!(datetime.checked_add(1.days()), None); + /// + /// assert_eq!( + /// datetime!(2019 - 11 - 25 15:30).checked_add(27.hours()), + /// Some(datetime!(2019 - 11 - 26 18:30)) + /// ); + /// ``` + pub const fn checked_add(self, duration: Duration) -> Option<Self> { + let (date_adjustment, time) = self.time.adjusting_add(duration); + let date = const_try_opt!(self.date.checked_add(duration)); + + Some(Self { + date: match date_adjustment { + util::DateAdjustment::Previous => const_try_opt!(date.previous_day()), + util::DateAdjustment::Next => const_try_opt!(date.next_day()), + util::DateAdjustment::None => date, + }, + time, + }) + } + + /// Computes `self - duration`, returning `None` if an overflow occurred. + /// + /// ``` + /// # use time::{Date, ext::NumericalDuration}; + /// # use time_macros::datetime; + /// let datetime = Date::MIN.midnight(); + /// assert_eq!(datetime.checked_sub(2.days()), None); + /// + /// let datetime = Date::MAX.midnight(); + /// assert_eq!(datetime.checked_sub((-1).days()), None); + /// + /// assert_eq!( + /// datetime!(2019 - 11 - 25 15:30).checked_sub(27.hours()), + /// Some(datetime!(2019 - 11 - 24 12:30)) + /// ); + /// ``` + pub const fn checked_sub(self, duration: Duration) -> Option<Self> { + let (date_adjustment, time) = self.time.adjusting_sub(duration); + let date = const_try_opt!(self.date.checked_sub(duration)); + + Some(Self { + date: match date_adjustment { + util::DateAdjustment::Previous => const_try_opt!(date.previous_day()), + util::DateAdjustment::Next => const_try_opt!(date.next_day()), + util::DateAdjustment::None => date, + }, + time, + }) + } + // endregion: checked arithmetic + + // region: saturating arithmetic + /// Computes `self + duration`, saturating value on overflow. + /// + /// ``` + /// # use time::{PrimitiveDateTime, ext::NumericalDuration}; + /// # use time_macros::datetime; + /// assert_eq!( + /// PrimitiveDateTime::MIN.saturating_add((-2).days()), + /// PrimitiveDateTime::MIN + /// ); + /// + /// assert_eq!( + /// PrimitiveDateTime::MAX.saturating_add(2.days()), + /// PrimitiveDateTime::MAX + /// ); + /// + /// assert_eq!( + /// datetime!(2019 - 11 - 25 15:30).saturating_add(27.hours()), + /// datetime!(2019 - 11 - 26 18:30) + /// ); + /// ``` + pub const fn saturating_add(self, duration: Duration) -> Self { + if let Some(datetime) = self.checked_add(duration) { + datetime + } else if duration.is_negative() { + Self::MIN + } else { + Self::MAX + } + } + + /// Computes `self - duration`, saturating value on overflow. + /// + /// ``` + /// # use time::{PrimitiveDateTime, ext::NumericalDuration}; + /// # use time_macros::datetime; + /// assert_eq!( + /// PrimitiveDateTime::MIN.saturating_sub(2.days()), + /// PrimitiveDateTime::MIN + /// ); + /// + /// assert_eq!( + /// PrimitiveDateTime::MAX.saturating_sub((-2).days()), + /// PrimitiveDateTime::MAX + /// ); + /// + /// assert_eq!( + /// datetime!(2019 - 11 - 25 15:30).saturating_sub(27.hours()), + /// datetime!(2019 - 11 - 24 12:30) + /// ); + /// ``` + pub const fn saturating_sub(self, duration: Duration) -> Self { + if let Some(datetime) = self.checked_sub(duration) { + datetime + } else if duration.is_negative() { + Self::MAX + } else { + Self::MIN + } + } + // endregion: saturating arithmetic +} + +// region: replacement +/// Methods that replace part of the `PrimitiveDateTime`. +impl PrimitiveDateTime { + /// Replace the time, preserving the date. + /// + /// ```rust + /// # use time_macros::{datetime, time}; + /// assert_eq!( + /// datetime!(2020-01-01 17:00).replace_time(time!(5:00)), + /// datetime!(2020-01-01 5:00) + /// ); + /// ``` + #[must_use = "This method does not mutate the original `PrimitiveDateTime`."] + pub const fn replace_time(self, time: Time) -> Self { + self.date.with_time(time) + } + + /// Replace the date, preserving the time. + /// + /// ```rust + /// # use time_macros::{datetime, date}; + /// assert_eq!( + /// datetime!(2020-01-01 12:00).replace_date(date!(2020-01-30)), + /// datetime!(2020-01-30 12:00) + /// ); + /// ``` + #[must_use = "This method does not mutate the original `PrimitiveDateTime`."] + pub const fn replace_date(self, date: Date) -> Self { + date.with_time(self.time) + } + + /// Replace the year. The month and day will be unchanged. + /// + /// ```rust + /// # use time_macros::datetime; + /// assert_eq!( + /// datetime!(2022 - 02 - 18 12:00).replace_year(2019), + /// Ok(datetime!(2019 - 02 - 18 12:00)) + /// ); + /// assert!(datetime!(2022 - 02 - 18 12:00).replace_year(-1_000_000_000).is_err()); // -1_000_000_000 isn't a valid year + /// assert!(datetime!(2022 - 02 - 18 12:00).replace_year(1_000_000_000).is_err()); // 1_000_000_000 isn't a valid year + /// ``` + #[must_use = "This method does not mutate the original `PrimitiveDateTime`."] + pub const fn replace_year(self, year: i32) -> Result<Self, error::ComponentRange> { + Ok(const_try!(self.date.replace_year(year)).with_time(self.time)) + } + + /// Replace the month of the year. + /// + /// ```rust + /// # use time_macros::datetime; + /// # use time::Month; + /// assert_eq!( + /// datetime!(2022 - 02 - 18 12:00).replace_month(Month::January), + /// Ok(datetime!(2022 - 01 - 18 12:00)) + /// ); + /// assert!(datetime!(2022 - 01 - 30 12:00).replace_month(Month::February).is_err()); // 30 isn't a valid day in February + /// ``` + #[must_use = "This method does not mutate the original `PrimitiveDateTime`."] + pub const fn replace_month(self, month: Month) -> Result<Self, error::ComponentRange> { + Ok(const_try!(self.date.replace_month(month)).with_time(self.time)) + } + + /// Replace the day of the month. + /// + /// ```rust + /// # use time_macros::datetime; + /// assert_eq!( + /// datetime!(2022 - 02 - 18 12:00).replace_day(1), + /// Ok(datetime!(2022 - 02 - 01 12:00)) + /// ); + /// assert!(datetime!(2022 - 02 - 18 12:00).replace_day(0).is_err()); // 00 isn't a valid day + /// assert!(datetime!(2022 - 02 - 18 12:00).replace_day(30).is_err()); // 30 isn't a valid day in February + /// ``` + #[must_use = "This method does not mutate the original `PrimitiveDateTime`."] + pub const fn replace_day(self, day: u8) -> Result<Self, error::ComponentRange> { + Ok(const_try!(self.date.replace_day(day)).with_time(self.time)) + } + + /// Replace the clock hour. + /// + /// ```rust + /// # use time_macros::datetime; + /// assert_eq!( + /// datetime!(2022 - 02 - 18 01:02:03.004_005_006).replace_hour(7), + /// Ok(datetime!(2022 - 02 - 18 07:02:03.004_005_006)) + /// ); + /// assert!(datetime!(2022 - 02 - 18 01:02:03.004_005_006).replace_hour(24).is_err()); // 24 isn't a valid hour + /// ``` + #[must_use = "This method does not mutate the original `PrimitiveDateTime`."] + pub const fn replace_hour(self, hour: u8) -> Result<Self, error::ComponentRange> { + Ok(self + .date() + .with_time(const_try!(self.time.replace_hour(hour)))) + } + + /// Replace the minutes within the hour. + /// + /// ```rust + /// # use time_macros::datetime; + /// assert_eq!( + /// datetime!(2022 - 02 - 18 01:02:03.004_005_006).replace_minute(7), + /// Ok(datetime!(2022 - 02 - 18 01:07:03.004_005_006)) + /// ); + /// assert!(datetime!(2022 - 02 - 18 01:02:03.004_005_006).replace_minute(60).is_err()); // 60 isn't a valid minute + /// ``` + #[must_use = "This method does not mutate the original `PrimitiveDateTime`."] + pub const fn replace_minute(self, minute: u8) -> Result<Self, error::ComponentRange> { + Ok(self + .date() + .with_time(const_try!(self.time.replace_minute(minute)))) + } + + /// Replace the seconds within the minute. + /// + /// ```rust + /// # use time_macros::datetime; + /// assert_eq!( + /// datetime!(2022 - 02 - 18 01:02:03.004_005_006).replace_second(7), + /// Ok(datetime!(2022 - 02 - 18 01:02:07.004_005_006)) + /// ); + /// assert!(datetime!(2022 - 02 - 18 01:02:03.004_005_006).replace_second(60).is_err()); // 60 isn't a valid second + /// ``` + #[must_use = "This method does not mutate the original `PrimitiveDateTime`."] + pub const fn replace_second(self, second: u8) -> Result<Self, error::ComponentRange> { + Ok(self + .date() + .with_time(const_try!(self.time.replace_second(second)))) + } + + /// Replace the milliseconds within the second. + /// + /// ```rust + /// # use time_macros::datetime; + /// assert_eq!( + /// datetime!(2022 - 02 - 18 01:02:03.004_005_006).replace_millisecond(7), + /// Ok(datetime!(2022 - 02 - 18 01:02:03.007)) + /// ); + /// assert!(datetime!(2022 - 02 - 18 01:02:03.004_005_006).replace_millisecond(1_000).is_err()); // 1_000 isn't a valid millisecond + /// ``` + #[must_use = "This method does not mutate the original `PrimitiveDateTime`."] + pub const fn replace_millisecond( + self, + millisecond: u16, + ) -> Result<Self, error::ComponentRange> { + Ok(self + .date() + .with_time(const_try!(self.time.replace_millisecond(millisecond)))) + } + + /// Replace the microseconds within the second. + /// + /// ```rust + /// # use time_macros::datetime; + /// assert_eq!( + /// datetime!(2022 - 02 - 18 01:02:03.004_005_006).replace_microsecond(7_008), + /// Ok(datetime!(2022 - 02 - 18 01:02:03.007_008)) + /// ); + /// assert!(datetime!(2022 - 02 - 18 01:02:03.004_005_006).replace_microsecond(1_000_000).is_err()); // 1_000_000 isn't a valid microsecond + /// ``` + #[must_use = "This method does not mutate the original `PrimitiveDateTime`."] + pub const fn replace_microsecond( + self, + microsecond: u32, + ) -> Result<Self, error::ComponentRange> { + Ok(self + .date() + .with_time(const_try!(self.time.replace_microsecond(microsecond)))) + } + + /// Replace the nanoseconds within the second. + /// + /// ```rust + /// # use time_macros::datetime; + /// assert_eq!( + /// datetime!(2022 - 02 - 18 01:02:03.004_005_006).replace_nanosecond(7_008_009), + /// Ok(datetime!(2022 - 02 - 18 01:02:03.007_008_009)) + /// ); + /// assert!(datetime!(2022 - 02 - 18 01:02:03.004_005_006).replace_nanosecond(1_000_000_000).is_err()); // 1_000_000_000 isn't a valid nanosecond + /// ``` + #[must_use = "This method does not mutate the original `PrimitiveDateTime`."] + pub const fn replace_nanosecond(self, nanosecond: u32) -> Result<Self, error::ComponentRange> { + Ok(self + .date() + .with_time(const_try!(self.time.replace_nanosecond(nanosecond)))) + } +} +// endregion replacement + +// region: formatting & parsing +#[cfg(feature = "formatting")] +impl PrimitiveDateTime { + /// Format the `PrimitiveDateTime` using the provided [format + /// description](crate::format_description). + pub fn format_into( + self, + output: &mut impl io::Write, + format: &(impl Formattable + ?Sized), + ) -> Result<usize, error::Format> { + format.format_into(output, Some(self.date), Some(self.time), None) + } + + /// Format the `PrimitiveDateTime` using the provided [format + /// description](crate::format_description). + /// + /// ```rust + /// # use time::format_description; + /// # use time_macros::datetime; + /// let format = format_description::parse("[year]-[month]-[day] [hour]:[minute]:[second]")?; + /// assert_eq!( + /// datetime!(2020-01-02 03:04:05).format(&format)?, + /// "2020-01-02 03:04:05" + /// ); + /// # Ok::<_, time::Error>(()) + /// ``` + pub fn format(self, format: &(impl Formattable + ?Sized)) -> Result<String, error::Format> { + format.format(Some(self.date), Some(self.time), None) + } +} + +#[cfg(feature = "parsing")] +impl PrimitiveDateTime { + /// Parse a `PrimitiveDateTime` from the input using the provided [format + /// description](crate::format_description). + /// + /// ```rust + /// # use time::PrimitiveDateTime; + /// # use time_macros::{datetime, format_description}; + /// let format = format_description!("[year]-[month]-[day] [hour]:[minute]:[second]"); + /// assert_eq!( + /// PrimitiveDateTime::parse("2020-01-02 03:04:05", &format)?, + /// datetime!(2020-01-02 03:04:05) + /// ); + /// # Ok::<_, time::Error>(()) + /// ``` + pub fn parse( + input: &str, + description: &(impl Parsable + ?Sized), + ) -> Result<Self, error::Parse> { + description.parse_date_time(input.as_bytes()) + } +} + +impl fmt::Display for PrimitiveDateTime { + fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result { + write!(f, "{} {}", self.date, self.time) + } +} + +impl fmt::Debug for PrimitiveDateTime { + fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result { + fmt::Display::fmt(self, f) + } +} +// endregion formatting & parsing + +// region: trait impls +impl Add<Duration> for PrimitiveDateTime { + type Output = Self; + + fn add(self, duration: Duration) -> Self::Output { + self.checked_add(duration) + .expect("resulting value is out of range") + } +} + +impl Add<StdDuration> for PrimitiveDateTime { + type Output = Self; + + fn add(self, duration: StdDuration) -> Self::Output { + let (is_next_day, time) = self.time.adjusting_add_std(duration); + + Self { + date: if is_next_day { + (self.date + duration) + .next_day() + .expect("resulting value is out of range") + } else { + self.date + duration + }, + time, + } + } +} + +impl_add_assign!(PrimitiveDateTime: Duration, StdDuration); + +impl Sub<Duration> for PrimitiveDateTime { + type Output = Self; + + fn sub(self, duration: Duration) -> Self::Output { + self.checked_sub(duration) + .expect("resulting value is out of range") + } +} + +impl Sub<StdDuration> for PrimitiveDateTime { + type Output = Self; + + fn sub(self, duration: StdDuration) -> Self::Output { + let (is_previous_day, time) = self.time.adjusting_sub_std(duration); + + Self { + date: if is_previous_day { + (self.date - duration) + .previous_day() + .expect("resulting value is out of range") + } else { + self.date - duration + }, + time, + } + } +} + +impl_sub_assign!(PrimitiveDateTime: Duration, StdDuration); + +impl Sub for PrimitiveDateTime { + type Output = Duration; + + fn sub(self, rhs: Self) -> Self::Output { + (self.date - rhs.date) + (self.time - rhs.time) + } +} +// endregion trait impls |