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//! The [`OffsetDateTime`] struct and its associated `impl`s.
#[cfg(feature = "formatting")]
use alloc::string::String;
use core::cmp::Ordering;
use core::fmt;
use core::hash::Hash;
use core::ops::{Add, AddAssign, Sub, SubAssign};
use core::time::Duration as StdDuration;
#[cfg(feature = "formatting")]
use std::io;
use deranged::RangedI64;
use num_conv::prelude::*;
use powerfmt::ext::FormatterExt as _;
use powerfmt::smart_display::{self, FormatterOptions, Metadata, SmartDisplay};
use time_core::convert::*;
use crate::date::{MAX_YEAR, MIN_YEAR};
#[cfg(feature = "formatting")]
use crate::formatting::Formattable;
use crate::internal_macros::{
cascade, const_try, const_try_opt, div_floor, ensure_ranged, expect_opt,
};
#[cfg(feature = "parsing")]
use crate::parsing::Parsable;
use crate::{
error, util, Date, Duration, Month, PrimitiveDateTime, Time, UtcDateTime, UtcOffset, Weekday,
};
/// The Julian day of the Unix epoch.
const UNIX_EPOCH_JULIAN_DAY: i32 = OffsetDateTime::UNIX_EPOCH.to_julian_day();
/// A [`PrimitiveDateTime`] with a [`UtcOffset`].
///
/// All comparisons are performed using the UTC time.
#[derive(Clone, Copy, Eq)]
pub struct OffsetDateTime {
local_date_time: PrimitiveDateTime,
offset: UtcOffset,
}
impl PartialEq for OffsetDateTime {
fn eq(&self, other: &Self) -> bool {
self.to_offset_raw(UtcOffset::UTC) == other.to_offset_raw(UtcOffset::UTC)
}
}
impl PartialOrd for OffsetDateTime {
fn partial_cmp(&self, other: &Self) -> Option<Ordering> {
Some(self.cmp(other))
}
}
impl Ord for OffsetDateTime {
fn cmp(&self, other: &Self) -> Ordering {
self.to_offset_raw(UtcOffset::UTC)
.cmp(&other.to_offset_raw(UtcOffset::UTC))
}
}
impl Hash for OffsetDateTime {
fn hash<H: core::hash::Hasher>(&self, state: &mut H) {
self.to_offset_raw(UtcOffset::UTC).hash(state);
}
}
impl OffsetDateTime {
/// Midnight, 1 January, 1970 (UTC).
///
/// ```rust
/// # use time::OffsetDateTime;
/// # use time_macros::datetime;
/// assert_eq!(OffsetDateTime::UNIX_EPOCH, datetime!(1970-01-01 0:00 UTC));
/// ```
pub const UNIX_EPOCH: Self = Self::new_in_offset(
// Safety: `ordinal` is not zero.
unsafe { Date::__from_ordinal_date_unchecked(1970, 1) },
Time::MIDNIGHT,
UtcOffset::UTC,
);
/// Create a new `OffsetDateTime` with the current date and time in UTC.
///
/// ```rust
/// # use time::OffsetDateTime;
/// # use time_macros::offset;
/// assert!(OffsetDateTime::now_utc().year() >= 2019);
/// assert_eq!(OffsetDateTime::now_utc().offset(), offset!(UTC));
/// ```
#[cfg(feature = "std")]
pub fn now_utc() -> Self {
#[cfg(all(
target_family = "wasm",
not(any(target_os = "emscripten", target_os = "wasi")),
feature = "wasm-bindgen"
))]
{
js_sys::Date::new_0().into()
}
#[cfg(not(all(
target_family = "wasm",
not(any(target_os = "emscripten", target_os = "wasi")),
feature = "wasm-bindgen"
)))]
std::time::SystemTime::now().into()
}
/// Attempt to create a new `OffsetDateTime` with the current date and time in the local offset.
/// If the offset cannot be determined, an error is returned.
///
/// ```rust
/// # use time::OffsetDateTime;
/// # if false {
/// assert!(OffsetDateTime::now_local().is_ok());
/// # }
/// ```
#[cfg(feature = "local-offset")]
pub fn now_local() -> Result<Self, error::IndeterminateOffset> {
let t = Self::now_utc();
Ok(t.to_offset(UtcOffset::local_offset_at(t)?))
}
/// Create a new `OffsetDateTime` with the given [`Date`], [`Time`], and [`UtcOffset`].
///
/// ```
/// # use time::{Date, Month, OffsetDateTime, Time, UtcOffset};
/// # use time_macros::datetime;
/// let dt = OffsetDateTime::new_in_offset(
/// Date::from_calendar_date(2024, Month::January, 1)?,
/// Time::from_hms_nano(12, 59, 59, 500_000_000)?,
/// UtcOffset::from_hms(-5, 0, 0)?,
/// );
/// assert_eq!(dt, datetime!(2024-01-01 12:59:59.5 -5));
/// # Ok::<_, time::error::Error>(())
/// ```
pub const fn new_in_offset(date: Date, time: Time, offset: UtcOffset) -> Self {
Self {
local_date_time: date.with_time(time),
offset,
}
}
/// Create a new `OffsetDateTime` with the given [`Date`] and [`Time`] in the UTC timezone.
///
/// ```
/// # use time::{Date, Month, OffsetDateTime, Time};
/// # use time_macros::datetime;
/// let dt = OffsetDateTime::new_utc(
/// Date::from_calendar_date(2024, Month::January, 1)?,
/// Time::from_hms_nano(12, 59, 59, 500_000_000)?,
/// );
/// assert_eq!(dt, datetime!(2024-01-01 12:59:59.5 UTC));
/// # Ok::<_, time::error::Error>(())
/// ```
pub const fn new_utc(date: Date, time: Time) -> Self {
PrimitiveDateTime::new(date, time).assume_utc()
}
/// Convert the `OffsetDateTime` from the current [`UtcOffset`] to the provided [`UtcOffset`].
///
/// ```rust
/// # use time_macros::{datetime, offset};
/// assert_eq!(
/// datetime!(2000-01-01 0:00 UTC)
/// .to_offset(offset!(-1))
/// .year(),
/// 1999,
/// );
///
/// // Let's see what time Sydney's new year's celebration is in New York and Los Angeles.
///
/// // Construct midnight on new year's in Sydney.
/// let sydney = datetime!(2000-01-01 0:00 +11);
/// let new_york = sydney.to_offset(offset!(-5));
/// let los_angeles = sydney.to_offset(offset!(-8));
/// assert_eq!(sydney.hour(), 0);
/// assert_eq!(new_york.hour(), 8);
/// assert_eq!(los_angeles.hour(), 5);
/// ```
///
/// # Panics
///
/// This method panics if the local date-time in the new offset is outside the supported range.
pub const fn to_offset(self, offset: UtcOffset) -> Self {
expect_opt!(
self.checked_to_offset(offset),
"local datetime out of valid range"
)
}
/// Convert the `OffsetDateTime` from the current [`UtcOffset`] to the provided [`UtcOffset`],
/// returning `None` if the date-time in the resulting offset is invalid.
///
/// ```rust
/// # use time::PrimitiveDateTime;
/// # use time_macros::{datetime, offset};
/// assert_eq!(
/// datetime!(2000-01-01 0:00 UTC)
/// .checked_to_offset(offset!(-1))
/// .unwrap()
/// .year(),
/// 1999,
/// );
/// assert_eq!(
/// PrimitiveDateTime::MAX
/// .assume_utc()
/// .checked_to_offset(offset!(+1)),
/// None,
/// );
/// ```
pub const fn checked_to_offset(self, offset: UtcOffset) -> Option<Self> {
if self.offset.whole_hours() == offset.whole_hours()
&& self.offset.minutes_past_hour() == offset.minutes_past_hour()
&& self.offset.seconds_past_minute() == offset.seconds_past_minute()
{
return Some(self.replace_offset(offset));
}
let (year, ordinal, time) = self.to_offset_raw(offset);
if year > MAX_YEAR || year < MIN_YEAR {
return None;
}
Some(Self::new_in_offset(
// Safety: `ordinal` is not zero.
unsafe { Date::__from_ordinal_date_unchecked(year, ordinal) },
time,
offset,
))
}
/// Convert the `OffsetDateTime` from the current [`UtcOffset`] to UTC, returning a
/// [`UtcDateTime`].
///
/// ```rust
/// # use time_macros::datetime;
/// assert_eq!(
/// datetime!(2000-01-01 0:00 +1)
/// .to_utc()
/// .year(),
/// 1999,
/// );
/// ```
///
/// # Panics
///
/// This method panics if the UTC date-time is outside the supported range.
pub const fn to_utc(self) -> UtcDateTime {
self.to_offset(UtcOffset::UTC).local_date_time.as_utc()
}
/// Convert the `OffsetDateTime` from the current [`UtcOffset`] to UTC, returning `None` if the
/// UTC date-time is invalid. Returns a [`UtcDateTime`].
///
/// ```rust
/// # use time_macros::datetime;
/// assert_eq!(
/// datetime!(2000-01-01 0:00 +1)
/// .checked_to_utc()
/// .unwrap()
/// .year(),
/// 1999,
/// );
/// assert_eq!(
#[cfg_attr(
feature = "large-dates",
doc = " datetime!(+999999-12-31 23:59:59 -1).checked_to_utc(),"
)]
#[cfg_attr(
not(feature = "large-dates"),
doc = " datetime!(9999-12-31 23:59:59 -1).checked_to_utc(),"
)]
/// None,
/// );
/// ```
pub const fn checked_to_utc(self) -> Option<UtcDateTime> {
Some(
const_try_opt!(self.checked_to_offset(UtcOffset::UTC))
.local_date_time
.as_utc(),
)
}
/// Equivalent to `.to_offset(UtcOffset::UTC)`, but returning the year, ordinal, and time. This
/// avoids constructing an invalid [`Date`] if the new value is out of range.
pub(crate) const fn to_offset_raw(self, offset: UtcOffset) -> (i32, u16, Time) {
let from = self.offset;
let to = offset;
// Fast path for when no conversion is necessary.
if from.whole_hours() == to.whole_hours()
&& from.minutes_past_hour() == to.minutes_past_hour()
&& from.seconds_past_minute() == to.seconds_past_minute()
{
return (self.year(), self.ordinal(), self.time());
}
let mut second = self.second() as i16 - from.seconds_past_minute() as i16
+ to.seconds_past_minute() as i16;
let mut minute =
self.minute() as i16 - from.minutes_past_hour() as i16 + to.minutes_past_hour() as i16;
let mut hour = self.hour() as i8 - from.whole_hours() + to.whole_hours();
let (mut year, ordinal) = self.to_ordinal_date();
let mut ordinal = ordinal as i16;
// Cascade the values twice. This is needed because the values are adjusted twice above.
cascade!(second in 0..Second::per(Minute) as i16 => minute);
cascade!(second in 0..Second::per(Minute) as i16 => minute);
cascade!(minute in 0..Minute::per(Hour) as i16 => hour);
cascade!(minute in 0..Minute::per(Hour) as i16 => hour);
cascade!(hour in 0..Hour::per(Day) as i8 => ordinal);
cascade!(hour in 0..Hour::per(Day) as i8 => ordinal);
cascade!(ordinal => year);
debug_assert!(ordinal > 0);
debug_assert!(ordinal <= util::days_in_year(year) as i16);
(
year,
ordinal as u16,
// Safety: The cascades above ensure the values are in range.
unsafe {
Time::__from_hms_nanos_unchecked(
hour as u8,
minute as u8,
second as u8,
self.nanosecond(),
)
},
)
}
/// Create an `OffsetDateTime` from the provided Unix timestamp. Calling `.offset()` on the
/// resulting value is guaranteed to return UTC.
///
/// ```rust
/// # use time::OffsetDateTime;
/// # use time_macros::datetime;
/// assert_eq!(
/// OffsetDateTime::from_unix_timestamp(0),
/// Ok(OffsetDateTime::UNIX_EPOCH),
/// );
/// assert_eq!(
/// OffsetDateTime::from_unix_timestamp(1_546_300_800),
/// Ok(datetime!(2019-01-01 0:00 UTC)),
/// );
/// ```
///
/// If you have a timestamp-nanosecond pair, you can use something along the lines of the
/// following:
///
/// ```rust
/// # use time::{Duration, OffsetDateTime, ext::NumericalDuration};
/// let (timestamp, nanos) = (1, 500_000_000);
/// assert_eq!(
/// OffsetDateTime::from_unix_timestamp(timestamp)? + Duration::nanoseconds(nanos),
/// OffsetDateTime::UNIX_EPOCH + 1.5.seconds()
/// );
/// # Ok::<_, time::Error>(())
/// ```
pub const fn from_unix_timestamp(timestamp: i64) -> Result<Self, error::ComponentRange> {
type Timestamp = RangedI64<
{
OffsetDateTime::new_in_offset(Date::MIN, Time::MIDNIGHT, UtcOffset::UTC)
.unix_timestamp()
},
{
OffsetDateTime::new_in_offset(Date::MAX, Time::MAX, UtcOffset::UTC).unix_timestamp()
},
>;
ensure_ranged!(Timestamp: timestamp);
// Use the unchecked method here, as the input validity has already been verified.
// Safety: The Julian day number is in range.
let date = unsafe {
Date::from_julian_day_unchecked(
UNIX_EPOCH_JULIAN_DAY + div_floor!(timestamp, Second::per(Day) as i64) as i32,
)
};
let seconds_within_day = timestamp.rem_euclid(Second::per(Day) as i64);
// Safety: All values are in range.
let time = unsafe {
Time::__from_hms_nanos_unchecked(
(seconds_within_day / Second::per(Hour) as i64) as u8,
((seconds_within_day % Second::per(Hour) as i64) / Minute::per(Hour) as i64) as u8,
(seconds_within_day % Second::per(Minute) as i64) as u8,
0,
)
};
Ok(Self::new_in_offset(date, time, UtcOffset::UTC))
}
/// Construct an `OffsetDateTime` from the provided Unix timestamp (in nanoseconds). Calling
/// `.offset()` on the resulting value is guaranteed to return UTC.
///
/// ```rust
/// # use time::OffsetDateTime;
/// # use time_macros::datetime;
/// assert_eq!(
/// OffsetDateTime::from_unix_timestamp_nanos(0),
/// Ok(OffsetDateTime::UNIX_EPOCH),
/// );
/// assert_eq!(
/// OffsetDateTime::from_unix_timestamp_nanos(1_546_300_800_000_000_000),
/// Ok(datetime!(2019-01-01 0:00 UTC)),
/// );
/// ```
pub const fn from_unix_timestamp_nanos(timestamp: i128) -> Result<Self, error::ComponentRange> {
let datetime = const_try!(Self::from_unix_timestamp(div_floor!(
timestamp,
Nanosecond::per(Second) as i128
) as i64));
Ok(Self::new_in_offset(
datetime.date(),
// Safety: `nanosecond` is in range due to `rem_euclid`.
unsafe {
Time::__from_hms_nanos_unchecked(
datetime.hour(),
datetime.minute(),
datetime.second(),
timestamp.rem_euclid(Nanosecond::per(Second) as i128) as u32,
)
},
UtcOffset::UTC,
))
}
/// Get the [`UtcOffset`].
///
/// ```rust
/// # use time_macros::{datetime, offset};
/// assert_eq!(datetime!(2019-01-01 0:00 UTC).offset(), offset!(UTC));
/// assert_eq!(datetime!(2019-01-01 0:00 +1).offset(), offset!(+1));
/// ```
pub const fn offset(self) -> UtcOffset {
self.offset
}
///
/// ```rust
/// # use time_macros::datetime;
/// assert_eq!(datetime!(1970-01-01 0:00 UTC).unix_timestamp(), 0);
/// assert_eq!(datetime!(1970-01-01 0:00 -1).unix_timestamp(), 3_600);
/// ```
pub const fn unix_timestamp(self) -> i64 {
let days =
(self.to_julian_day() as i64 - UNIX_EPOCH_JULIAN_DAY as i64) * Second::per(Day) as i64;
let hours = self.hour() as i64 * Second::per(Hour) as i64;
let minutes = self.minute() as i64 * Second::per(Minute) as i64;
let seconds = self.second() as i64;
let offset_seconds = self.offset.whole_seconds() as i64;
days + hours + minutes + seconds - offset_seconds
}
/// Get the Unix timestamp in nanoseconds.
///
/// ```rust
/// use time_macros::datetime;
/// assert_eq!(datetime!(1970-01-01 0:00 UTC).unix_timestamp_nanos(), 0);
/// assert_eq!(
/// datetime!(1970-01-01 0:00 -1).unix_timestamp_nanos(),
/// 3_600_000_000_000,
/// );
/// ```
pub const fn unix_timestamp_nanos(self) -> i128 {
self.unix_timestamp() as i128 * Nanosecond::per(Second) as i128 + self.nanosecond() as i128
}
/// Get the [`PrimitiveDateTime`] in the stored offset.
pub(crate) const fn date_time(self) -> PrimitiveDateTime {
self.local_date_time
}
/// Get the [`Date`] in the stored offset.
///
/// ```rust
/// # use time_macros::{date, datetime, offset};
/// assert_eq!(datetime!(2019-01-01 0:00 UTC).date(), date!(2019-01-01));
/// assert_eq!(
/// datetime!(2019-01-01 0:00 UTC)
/// .to_offset(offset!(-1))
/// .date(),
/// date!(2018-12-31),
/// );
/// ```
pub const fn date(self) -> Date {
self.date_time().date()
}
/// Get the [`Time`] in the stored offset.
///
/// ```rust
/// # use time_macros::{datetime, offset, time};
/// assert_eq!(datetime!(2019-01-01 0:00 UTC).time(), time!(0:00));
/// assert_eq!(
/// datetime!(2019-01-01 0:00 UTC)
/// .to_offset(offset!(-1))
/// .time(),
/// time!(23:00)
/// );
/// ```
pub const fn time(self) -> Time {
self.date_time().time()
}
/// Get the year of the date in the stored offset.
///
/// ```rust
/// # use time_macros::{datetime, offset};
/// assert_eq!(datetime!(2019-01-01 0:00 UTC).year(), 2019);
/// assert_eq!(
/// datetime!(2019-12-31 23:00 UTC)
/// .to_offset(offset!(+1))
/// .year(),
/// 2020,
/// );
/// assert_eq!(datetime!(2020-01-01 0:00 UTC).year(), 2020);
/// ```
pub const fn year(self) -> i32 {
self.date().year()
}
/// Get the month of the date in the stored offset.
///
/// ```rust
/// # use time::Month;
/// # use time_macros::{datetime, offset};
/// assert_eq!(datetime!(2019-01-01 0:00 UTC).month(), Month::January);
/// assert_eq!(
/// datetime!(2019-12-31 23:00 UTC)
/// .to_offset(offset!(+1))
/// .month(),
/// Month::January,
/// );
/// ```
pub const fn month(self) -> Month {
self.date().month()
}
/// Get the day of the date in the stored offset.
///
/// The returned value will always be in the range `1..=31`.
///
/// ```rust
/// # use time_macros::{datetime, offset};
/// assert_eq!(datetime!(2019-01-01 0:00 UTC).day(), 1);
/// assert_eq!(
/// datetime!(2019-12-31 23:00 UTC)
/// .to_offset(offset!(+1))
/// .day(),
/// 1,
/// );
/// ```
pub const fn day(self) -> u8 {
self.date().day()
}
/// Get the day of the year of the date in the stored offset.
///
/// The returned value will always be in the range `1..=366`.
///
/// ```rust
/// # use time_macros::{datetime, offset};
/// assert_eq!(datetime!(2019-01-01 0:00 UTC).ordinal(), 1);
/// assert_eq!(
/// datetime!(2019-12-31 23:00 UTC)
/// .to_offset(offset!(+1))
/// .ordinal(),
/// 1,
/// );
/// ```
pub const fn ordinal(self) -> u16 {
self.date().ordinal()
}
/// Get the ISO week number of the date in the stored offset.
///
/// The returned value will always be in the range `1..=53`.
///
/// ```rust
/// # use time_macros::datetime;
/// assert_eq!(datetime!(2019-01-01 0:00 UTC).iso_week(), 1);
/// assert_eq!(datetime!(2020-01-01 0:00 UTC).iso_week(), 1);
/// assert_eq!(datetime!(2020-12-31 0:00 UTC).iso_week(), 53);
/// assert_eq!(datetime!(2021-01-01 0:00 UTC).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 UTC).sunday_based_week(), 0);
/// assert_eq!(datetime!(2020-01-01 0:00 UTC).sunday_based_week(), 0);
/// assert_eq!(datetime!(2020-12-31 0:00 UTC).sunday_based_week(), 52);
/// assert_eq!(datetime!(2021-01-01 0:00 UTC).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 UTC).monday_based_week(), 0);
/// assert_eq!(datetime!(2020-01-01 0:00 UTC).monday_based_week(), 0);
/// assert_eq!(datetime!(2020-12-31 0:00 UTC).monday_based_week(), 52);
/// assert_eq!(datetime!(2021-01-01 0:00 UTC).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 UTC).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 UTC).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 UTC).to_iso_week_date(),
/// (2019, 1, Tuesday)
/// );
/// assert_eq!(
/// datetime!(2019-10-04 0:00 UTC).to_iso_week_date(),
/// (2019, 40, Friday)
/// );
/// assert_eq!(
/// datetime!(2020-01-01 0:00 UTC).to_iso_week_date(),
/// (2020, 1, Wednesday)
/// );
/// assert_eq!(
/// datetime!(2020-12-31 0:00 UTC).to_iso_week_date(),
/// (2020, 53, Thursday)
/// );
/// assert_eq!(
/// datetime!(2021-01-01 0:00 UTC).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 of the date in the stored offset.
///
/// ```rust
/// # use time::Weekday::*;
/// # use time_macros::datetime;
/// assert_eq!(datetime!(2019-01-01 0:00 UTC).weekday(), Tuesday);
/// assert_eq!(datetime!(2019-02-01 0:00 UTC).weekday(), Friday);
/// assert_eq!(datetime!(2019-03-01 0:00 UTC).weekday(), Friday);
/// ```
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
///
/// ```rust
/// # use time_macros::datetime;
/// assert_eq!(datetime!(-4713-11-24 0:00 UTC).to_julian_day(), 0);
/// assert_eq!(datetime!(2000-01-01 0:00 UTC).to_julian_day(), 2_451_545);
/// assert_eq!(datetime!(2019-01-01 0:00 UTC).to_julian_day(), 2_458_485);
/// assert_eq!(datetime!(2019-12-31 0:00 UTC).to_julian_day(), 2_458_849);
/// ```
pub const fn to_julian_day(self) -> i32 {
self.date().to_julian_day()
}
/// Get the clock hour, minute, and second.
///
/// ```rust
/// # use time_macros::datetime;
/// assert_eq!(datetime!(2020-01-01 0:00:00 UTC).to_hms(), (0, 0, 0));
/// assert_eq!(datetime!(2020-01-01 23:59:59 UTC).to_hms(), (23, 59, 59));
/// ```
pub const fn to_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 UTC).to_hms_milli(),
/// (0, 0, 0, 0)
/// );
/// assert_eq!(
/// datetime!(2020-01-01 23:59:59.999 UTC).to_hms_milli(),
/// (23, 59, 59, 999)
/// );
/// ```
pub const fn to_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 UTC).to_hms_micro(),
/// (0, 0, 0, 0)
/// );
/// assert_eq!(
/// datetime!(2020-01-01 23:59:59.999_999 UTC).to_hms_micro(),
/// (23, 59, 59, 999_999)
/// );
/// ```
pub const fn to_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 UTC).to_hms_nano(),
/// (0, 0, 0, 0)
/// );
/// assert_eq!(
/// datetime!(2020-01-01 23:59:59.999_999_999 UTC).to_hms_nano(),
/// (23, 59, 59, 999_999_999)
/// );
/// ```
pub const fn to_hms_nano(self) -> (u8, u8, u8, u32) {
self.time().as_hms_nano()
}
/// Get the clock hour in the stored offset.
///
/// The returned value will always be in the range `0..24`.
///
/// ```rust
/// # use time_macros::{datetime, offset};
/// assert_eq!(datetime!(2019-01-01 0:00 UTC).hour(), 0);
/// assert_eq!(
/// datetime!(2019-01-01 23:59:59 UTC)
/// .to_offset(offset!(-2))
/// .hour(),
/// 21,
/// );
/// ```
pub const fn hour(self) -> u8 {
self.time().hour()
}
/// Get the minute within the hour in the stored offset.
///
/// The returned value will always be in the range `0..60`.
///
/// ```rust
/// # use time_macros::{datetime, offset};
/// assert_eq!(datetime!(2019-01-01 0:00 UTC).minute(), 0);
/// assert_eq!(
/// datetime!(2019-01-01 23:59:59 UTC)
/// .to_offset(offset!(+0:30))
/// .minute(),
/// 29,
/// );
/// ```
pub const fn minute(self) -> u8 {
self.time().minute()
}
/// Get the second within the minute in the stored offset.
///
/// The returned value will always be in the range `0..60`.
///
/// ```rust
/// # use time_macros::{datetime, offset};
/// assert_eq!(datetime!(2019-01-01 0:00 UTC).second(), 0);
/// assert_eq!(
/// datetime!(2019-01-01 23:59:59 UTC)
/// .to_offset(offset!(+0:00:30))
/// .second(),
/// 29,
/// );
/// ```
pub const fn second(self) -> u8 {
self.time().second()
}
// Because a `UtcOffset` is limited in resolution to one second, any subsecond value will not
// change when adjusting for the offset.
/// Get the milliseconds within the second in the stored offset.
///
/// 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 UTC).millisecond(), 0);
/// assert_eq!(datetime!(2019-01-01 23:59:59.999 UTC).millisecond(), 999);
/// ```
pub const fn millisecond(self) -> u16 {
self.time().millisecond()
}
/// Get the microseconds within the second in the stored offset.
///
/// 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 UTC).microsecond(), 0);
/// assert_eq!(
/// datetime!(2019-01-01 23:59:59.999_999 UTC).microsecond(),
/// 999_999,
/// );
/// ```
pub const fn microsecond(self) -> u32 {
self.time().microsecond()
}
/// Get the nanoseconds within the second in the stored offset.
///
/// 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 UTC).nanosecond(), 0);
/// assert_eq!(
/// datetime!(2019-01-01 23:59:59.999_999_999 UTC).nanosecond(),
/// 999_999_999,
/// );
/// ```
pub const fn nanosecond(self) -> u32 {
self.time().nanosecond()
}
/// Computes `self + duration`, returning `None` if an overflow occurred.
///
/// ```
/// # use time::{Date, ext::NumericalDuration};
/// # use time_macros::{datetime, offset};
/// let datetime = Date::MIN.midnight().assume_offset(offset!(+10));
/// assert_eq!(datetime.checked_add((-2).days()), None);
///
/// let datetime = Date::MAX.midnight().assume_offset(offset!(+10));
/// assert_eq!(datetime.checked_add(2.days()), None);
///
/// assert_eq!(
/// datetime!(2019-11-25 15:30 +10).checked_add(27.hours()),
/// Some(datetime!(2019-11-26 18:30 +10))
/// );
/// ```
pub const fn checked_add(self, duration: Duration) -> Option<Self> {
Some(const_try_opt!(self.date_time().checked_add(duration)).assume_offset(self.offset()))
}
/// Computes `self - duration`, returning `None` if an overflow occurred.
///
/// ```
/// # use time::{Date, ext::NumericalDuration};
/// # use time_macros::{datetime, offset};
/// let datetime = Date::MIN.midnight().assume_offset(offset!(+10));
/// assert_eq!(datetime.checked_sub(2.days()), None);
///
/// let datetime = Date::MAX.midnight().assume_offset(offset!(+10));
/// assert_eq!(datetime.checked_sub((-2).days()), None);
///
/// assert_eq!(
/// datetime!(2019-11-25 15:30 +10).checked_sub(27.hours()),
/// Some(datetime!(2019-11-24 12:30 +10))
/// );
/// ```
pub const fn checked_sub(self, duration: Duration) -> Option<Self> {
Some(const_try_opt!(self.date_time().checked_sub(duration)).assume_offset(self.offset()))
}
/// Computes `self + duration`, saturating value on overflow.
///
/// ```
/// # use time::ext::NumericalDuration;
/// # use time_macros::datetime;
/// assert_eq!(
#[cfg_attr(
feature = "large-dates",
doc = " datetime!(-999999-01-01 0:00 +10).saturating_add((-2).days()),"
)]
#[cfg_attr(feature = "large-dates", doc = " datetime!(-999999-01-01 0:00 +10)")]
#[cfg_attr(
not(feature = "large-dates"),
doc = " datetime!(-9999-01-01 0:00 +10).saturating_add((-2).days()),"
)]
#[cfg_attr(
not(feature = "large-dates"),
doc = " datetime!(-9999-01-01 0:00 +10)"
)]
/// );
///
/// assert_eq!(
#[cfg_attr(
feature = "large-dates",
doc = " datetime!(+999999-12-31 23:59:59.999_999_999 +10).saturating_add(2.days()),"
)]
#[cfg_attr(
feature = "large-dates",
doc = " datetime!(+999999-12-31 23:59:59.999_999_999 +10)"
)]
#[cfg_attr(
not(feature = "large-dates"),
doc = " datetime!(+9999-12-31 23:59:59.999_999_999 +10).saturating_add(2.days()),"
)]
#[cfg_attr(
not(feature = "large-dates"),
doc = " datetime!(+9999-12-31 23:59:59.999_999_999 +10)"
)]
/// );
///
/// assert_eq!(
/// datetime!(2019-11-25 15:30 +10).saturating_add(27.hours()),
/// datetime!(2019-11-26 18:30 +10)
/// );
/// ```
pub const fn saturating_add(self, duration: Duration) -> Self {
if let Some(datetime) = self.checked_add(duration) {
datetime
} else if duration.is_negative() {
PrimitiveDateTime::MIN.assume_offset(self.offset())
} else {
PrimitiveDateTime::MAX.assume_offset(self.offset())
}
}
/// Computes `self - duration`, saturating value on overflow.
///
/// ```
/// # use time::ext::NumericalDuration;
/// # use time_macros::datetime;
/// assert_eq!(
#[cfg_attr(
feature = "large-dates",
doc = " datetime!(-999999-01-01 0:00 +10).saturating_sub(2.days()),"
)]
#[cfg_attr(feature = "large-dates", doc = " datetime!(-999999-01-01 0:00 +10)")]
#[cfg_attr(
not(feature = "large-dates"),
doc = " datetime!(-9999-01-01 0:00 +10).saturating_sub(2.days()),"
)]
#[cfg_attr(
not(feature = "large-dates"),
doc = " datetime!(-9999-01-01 0:00 +10)"
)]
/// );
///
/// assert_eq!(
#[cfg_attr(
feature = "large-dates",
doc = " datetime!(+999999-12-31 23:59:59.999_999_999 +10).saturating_sub((-2).days()),"
)]
#[cfg_attr(
feature = "large-dates",
doc = " datetime!(+999999-12-31 23:59:59.999_999_999 +10)"
)]
#[cfg_attr(
not(feature = "large-dates"),
doc = " datetime!(+9999-12-31 23:59:59.999_999_999 +10).saturating_sub((-2).days()),"
)]
#[cfg_attr(
not(feature = "large-dates"),
doc = " datetime!(+9999-12-31 23:59:59.999_999_999 +10)"
)]
/// );
///
/// assert_eq!(
/// datetime!(2019-11-25 15:30 +10).saturating_sub(27.hours()),
/// datetime!(2019-11-24 12:30 +10)
/// );
/// ```
pub const fn saturating_sub(self, duration: Duration) -> Self {
if let Some(datetime) = self.checked_sub(duration) {
datetime
} else if duration.is_negative() {
PrimitiveDateTime::MAX.assume_offset(self.offset())
} else {
PrimitiveDateTime::MIN.assume_offset(self.offset())
}
}
}
/// Methods that replace part of the `OffsetDateTime`.
impl OffsetDateTime {
/// Replace the time, which is assumed to be in the stored offset. The date and offset
/// components are unchanged.
///
/// ```rust
/// # use time_macros::{datetime, time};
/// assert_eq!(
/// datetime!(2020-01-01 5:00 UTC).replace_time(time!(12:00)),
/// datetime!(2020-01-01 12:00 UTC)
/// );
/// assert_eq!(
/// datetime!(2020-01-01 12:00 -5).replace_time(time!(7:00)),
/// datetime!(2020-01-01 7:00 -5)
/// );
/// assert_eq!(
/// datetime!(2020-01-01 0:00 +1).replace_time(time!(12:00)),
/// datetime!(2020-01-01 12:00 +1)
/// );
/// ```
#[must_use = "This method does not mutate the original `OffsetDateTime`."]
pub const fn replace_time(self, time: Time) -> Self {
Self::new_in_offset(self.date(), time, self.offset())
}
/// Replace the date, which is assumed to be in the stored offset. The time and offset
/// components are unchanged.
///
/// ```rust
/// # use time_macros::{datetime, date};
/// assert_eq!(
/// datetime!(2020-01-01 12:00 UTC).replace_date(date!(2020-01-30)),
/// datetime!(2020-01-30 12:00 UTC)
/// );
/// assert_eq!(
/// datetime!(2020-01-01 0:00 +1).replace_date(date!(2020-01-30)),
/// datetime!(2020-01-30 0:00 +1)
/// );
/// ```
#[must_use = "This method does not mutate the original `OffsetDateTime`."]
pub const fn replace_date(self, date: Date) -> Self {
Self::new_in_offset(date, self.time(), self.offset())
}
/// Replace the date and time, which are assumed to be in the stored offset. The offset
/// component remains unchanged.
///
/// ```rust
/// # use time_macros::datetime;
/// assert_eq!(
/// datetime!(2020-01-01 12:00 UTC).replace_date_time(datetime!(2020-01-30 16:00)),
/// datetime!(2020-01-30 16:00 UTC)
/// );
/// assert_eq!(
/// datetime!(2020-01-01 12:00 +1).replace_date_time(datetime!(2020-01-30 0:00)),
/// datetime!(2020-01-30 0:00 +1)
/// );
/// ```
#[must_use = "This method does not mutate the original `OffsetDateTime`."]
pub const fn replace_date_time(self, date_time: PrimitiveDateTime) -> Self {
date_time.assume_offset(self.offset())
}
/// Replace the offset. The date and time components remain unchanged.
///
/// ```rust
/// # use time_macros::{datetime, offset};
/// assert_eq!(
/// datetime!(2020-01-01 0:00 UTC).replace_offset(offset!(-5)),
/// datetime!(2020-01-01 0:00 -5)
/// );
/// ```
#[must_use = "This method does not mutate the original `OffsetDateTime`."]
pub const fn replace_offset(self, offset: UtcOffset) -> Self {
self.date_time().assume_offset(offset)
}
/// Replace the year. The month and day will be unchanged.
///
/// ```rust
/// # use time_macros::datetime;
/// assert_eq!(
/// datetime!(2022-02-18 12:00 +01).replace_year(2019),
/// Ok(datetime!(2019-02-18 12:00 +01))
/// );
/// assert!(datetime!(2022-02-18 12:00 +01).replace_year(-1_000_000_000).is_err()); // -1_000_000_000 isn't a valid year
/// assert!(datetime!(2022-02-18 12:00 +01).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 `OffsetDateTime`."]
pub const fn replace_year(self, year: i32) -> Result<Self, error::ComponentRange> {
Ok(const_try!(self.date_time().replace_year(year)).assume_offset(self.offset()))
}
/// Replace the month of the year.
///
/// ```rust
/// # use time_macros::datetime;
/// # use time::Month;
/// assert_eq!(
/// datetime!(2022-02-18 12:00 +01).replace_month(Month::January),
/// Ok(datetime!(2022-01-18 12:00 +01))
/// );
/// assert!(datetime!(2022-01-30 12:00 +01).replace_month(Month::February).is_err()); // 30 isn't a valid day in February
/// ```
#[must_use = "This method does not mutate the original `OffsetDateTime`."]
pub const fn replace_month(self, month: Month) -> Result<Self, error::ComponentRange> {
Ok(const_try!(self.date_time().replace_month(month)).assume_offset(self.offset()))
}
/// Replace the day of the month.
///
/// ```rust
/// # use time_macros::datetime;
/// assert_eq!(
/// datetime!(2022-02-18 12:00 +01).replace_day(1),
/// Ok(datetime!(2022-02-01 12:00 +01))
/// );
/// assert!(datetime!(2022-02-18 12:00 +01).replace_day(0).is_err()); // 00 isn't a valid day
/// assert!(datetime!(2022-02-18 12:00 +01).replace_day(30).is_err()); // 30 isn't a valid day in February
/// ```
#[must_use = "This method does not mutate the original `OffsetDateTime`."]
pub const fn replace_day(self, day: u8) -> Result<Self, error::ComponentRange> {
Ok(const_try!(self.date_time().replace_day(day)).assume_offset(self.offset()))
}
/// Replace the day of the year.
///
/// ```rust
/// # use time_macros::datetime;
/// assert_eq!(datetime!(2022-049 12:00 +01).replace_ordinal(1), Ok(datetime!(2022-001 12:00 +01)));
/// assert!(datetime!(2022-049 12:00 +01).replace_ordinal(0).is_err()); // 0 isn't a valid ordinal
/// assert!(datetime!(2022-049 12:00 +01).replace_ordinal(366).is_err()); // 2022 isn't a leap year
/// ```
#[must_use = "This method does not mutate the original `OffsetDateTime`."]
pub const fn replace_ordinal(self, ordinal: u16) -> Result<Self, error::ComponentRange> {
Ok(const_try!(self.date_time().replace_ordinal(ordinal)).assume_offset(self.offset()))
}
/// Replace the clock hour.
///
/// ```rust
/// # use time_macros::datetime;
/// assert_eq!(
/// datetime!(2022-02-18 01:02:03.004_005_006 +01).replace_hour(7),
/// Ok(datetime!(2022-02-18 07:02:03.004_005_006 +01))
/// );
/// assert!(datetime!(2022-02-18 01:02:03.004_005_006 +01).replace_hour(24).is_err()); // 24 isn't a valid hour
/// ```
#[must_use = "This method does not mutate the original `OffsetDateTime`."]
pub const fn replace_hour(self, hour: u8) -> Result<Self, error::ComponentRange> {
Ok(const_try!(self.date_time().replace_hour(hour)).assume_offset(self.offset()))
}
/// Replace the minutes within the hour.
///
/// ```rust
/// # use time_macros::datetime;
/// assert_eq!(
/// datetime!(2022-02-18 01:02:03.004_005_006 +01).replace_minute(7),
/// Ok(datetime!(2022-02-18 01:07:03.004_005_006 +01))
/// );
/// assert!(datetime!(2022-02-18 01:02:03.004_005_006 +01).replace_minute(60).is_err()); // 60 isn't a valid minute
/// ```
#[must_use = "This method does not mutate the original `OffsetDateTime`."]
pub const fn replace_minute(self, minute: u8) -> Result<Self, error::ComponentRange> {
Ok(const_try!(self.date_time().replace_minute(minute)).assume_offset(self.offset()))
}
/// Replace the seconds within the minute.
///
/// ```rust
/// # use time_macros::datetime;
/// assert_eq!(
/// datetime!(2022-02-18 01:02:03.004_005_006 +01).replace_second(7),
/// Ok(datetime!(2022-02-18 01:02:07.004_005_006 +01))
/// );
/// assert!(datetime!(2022-02-18 01:02:03.004_005_006 +01).replace_second(60).is_err()); // 60 isn't a valid second
/// ```
#[must_use = "This method does not mutate the original `OffsetDateTime`."]
pub const fn replace_second(self, second: u8) -> Result<Self, error::ComponentRange> {
Ok(const_try!(self.date_time().replace_second(second)).assume_offset(self.offset()))
}
/// Replace the milliseconds within the second.
///
/// ```rust
/// # use time_macros::datetime;
/// assert_eq!(
/// datetime!(2022-02-18 01:02:03.004_005_006 +01).replace_millisecond(7),
/// Ok(datetime!(2022-02-18 01:02:03.007 +01))
/// );
/// assert!(datetime!(2022-02-18 01:02:03.004_005_006 +01).replace_millisecond(1_000).is_err()); // 1_000 isn't a valid millisecond
/// ```
#[must_use = "This method does not mutate the original `OffsetDateTime`."]
pub const fn replace_millisecond(
self,
millisecond: u16,
) -> Result<Self, error::ComponentRange> {
Ok(
const_try!(self.date_time().replace_millisecond(millisecond))
.assume_offset(self.offset()),
)
}
/// Replace the microseconds within the second.
///
/// ```rust
/// # use time_macros::datetime;
/// assert_eq!(
/// datetime!(2022-02-18 01:02:03.004_005_006 +01).replace_microsecond(7_008),
/// Ok(datetime!(2022-02-18 01:02:03.007_008 +01))
/// );
/// assert!(datetime!(2022-02-18 01:02:03.004_005_006 +01).replace_microsecond(1_000_000).is_err()); // 1_000_000 isn't a valid microsecond
/// ```
#[must_use = "This method does not mutate the original `OffsetDateTime`."]
pub const fn replace_microsecond(
self,
microsecond: u32,
) -> Result<Self, error::ComponentRange> {
Ok(
const_try!(self.date_time().replace_microsecond(microsecond))
.assume_offset(self.offset()),
)
}
/// Replace the nanoseconds within the second.
///
/// ```rust
/// # use time_macros::datetime;
/// assert_eq!(
/// datetime!(2022-02-18 01:02:03.004_005_006 +01).replace_nanosecond(7_008_009),
/// Ok(datetime!(2022-02-18 01:02:03.007_008_009 +01))
/// );
/// assert!(datetime!(2022-02-18 01:02:03.004_005_006 +01).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 `OffsetDateTime`."]
pub const fn replace_nanosecond(self, nanosecond: u32) -> Result<Self, error::ComponentRange> {
Ok(
const_try!(self.date_time().replace_nanosecond(nanosecond))
.assume_offset(self.offset()),
)
}
}
#[cfg(feature = "formatting")]
impl OffsetDateTime {
/// Format the `OffsetDateTime` using the provided [format
/// description](crate::format_description).
pub fn format_into(
self,
output: &mut (impl io::Write + ?Sized),
format: &(impl Formattable + ?Sized),
) -> Result<usize, error::Format> {
format.format_into(
output,
Some(self.date()),
Some(self.time()),
Some(self.offset()),
)
}
/// Format the `OffsetDateTime` 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] [offset_hour \
/// sign:mandatory]:[offset_minute]:[offset_second]",
/// )?;
/// assert_eq!(
/// datetime!(2020-01-02 03:04:05 +06:07:08).format(&format)?,
/// "2020-01-02 03:04:05 +06:07:08"
/// );
/// # Ok::<_, time::Error>(())
/// ```
pub fn format(self, format: &(impl Formattable + ?Sized)) -> Result<String, error::Format> {
format.format(Some(self.date()), Some(self.time()), Some(self.offset()))
}
}
#[cfg(feature = "parsing")]
impl OffsetDateTime {
/// Parse an `OffsetDateTime` from the input using the provided [format
/// description](crate::format_description).
///
/// ```rust
/// # use time::OffsetDateTime;
/// # use time_macros::{datetime, format_description};
/// let format = format_description!(
/// "[year]-[month]-[day] [hour]:[minute]:[second] [offset_hour \
/// sign:mandatory]:[offset_minute]:[offset_second]"
/// );
/// assert_eq!(
/// OffsetDateTime::parse("2020-01-02 03:04:05 +06:07:08", &format)?,
/// datetime!(2020-01-02 03:04:05 +06:07:08)
/// );
/// # Ok::<_, time::Error>(())
/// ```
pub fn parse(
input: &str,
description: &(impl Parsable + ?Sized),
) -> Result<Self, error::Parse> {
description.parse_offset_date_time(input.as_bytes())
}
/// A helper method to check if the `OffsetDateTime` is a valid representation of a leap second.
/// Leap seconds, when parsed, are represented as the preceding nanosecond. However, leap
/// seconds can only occur as the last second of a month UTC.
#[cfg(feature = "parsing")]
pub(crate) const fn is_valid_leap_second_stand_in(self) -> bool {
// This comparison doesn't need to be adjusted for the stored offset, so check it first for
// speed.
if self.nanosecond() != 999_999_999 {
return false;
}
let (year, ordinal, time) = self.to_offset_raw(UtcOffset::UTC);
let Ok(date) = Date::from_ordinal_date(year, ordinal) else {
return false;
};
time.hour() == 23
&& time.minute() == 59
&& time.second() == 59
&& date.day() == date.month().length(year)
}
}
impl SmartDisplay for OffsetDateTime {
type Metadata = ();
fn metadata(&self, _: FormatterOptions) -> Metadata<Self> {
let width =
smart_display::padded_width_of!(self.date(), " ", self.time(), " ", self.offset());
Metadata::new(width, self, ())
}
fn fmt_with_metadata(
&self,
f: &mut fmt::Formatter<'_>,
metadata: Metadata<Self>,
) -> fmt::Result {
f.pad_with_width(
metadata.unpadded_width(),
format_args!("{} {} {}", self.date(), self.time(), self.offset()),
)
}
}
impl fmt::Display for OffsetDateTime {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
SmartDisplay::fmt(self, f)
}
}
impl fmt::Debug for OffsetDateTime {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
fmt::Display::fmt(self, f)
}
}
impl Add<Duration> for OffsetDateTime {
type Output = Self;
/// # Panics
///
/// This may panic if an overflow occurs.
fn add(self, duration: Duration) -> Self::Output {
self.checked_add(duration)
.expect("resulting value is out of range")
}
}
impl Add<StdDuration> for OffsetDateTime {
type Output = Self;
/// # Panics
///
/// This may panic if an overflow occurs.
fn add(self, duration: StdDuration) -> Self::Output {
let (is_next_day, time) = self.time().adjusting_add_std(duration);
Self::new_in_offset(
if is_next_day {
(self.date() + duration)
.next_day()
.expect("resulting value is out of range")
} else {
self.date() + duration
},
time,
self.offset,
)
}
}
impl AddAssign<Duration> for OffsetDateTime {
/// # Panics
///
/// This may panic if an overflow occurs.
fn add_assign(&mut self, rhs: Duration) {
*self = *self + rhs;
}
}
impl AddAssign<StdDuration> for OffsetDateTime {
/// # Panics
///
/// This may panic if an overflow occurs.
fn add_assign(&mut self, rhs: StdDuration) {
*self = *self + rhs;
}
}
impl Sub<Duration> for OffsetDateTime {
type Output = Self;
/// # Panics
///
/// This may panic if an overflow occurs.
fn sub(self, rhs: Duration) -> Self::Output {
self.checked_sub(rhs)
.expect("resulting value is out of range")
}
}
impl Sub<StdDuration> for OffsetDateTime {
type Output = Self;
/// # Panics
///
/// This may panic if an overflow occurs.
fn sub(self, duration: StdDuration) -> Self::Output {
let (is_previous_day, time) = self.time().adjusting_sub_std(duration);
Self::new_in_offset(
if is_previous_day {
(self.date() - duration)
.previous_day()
.expect("resulting value is out of range")
} else {
self.date() - duration
},
time,
self.offset,
)
}
}
impl SubAssign<Duration> for OffsetDateTime {
/// # Panics
///
/// This may panic if an overflow occurs.
fn sub_assign(&mut self, rhs: Duration) {
*self = *self - rhs;
}
}
impl SubAssign<StdDuration> for OffsetDateTime {
/// # Panics
///
/// This may panic if an overflow occurs.
fn sub_assign(&mut self, rhs: StdDuration) {
*self = *self - rhs;
}
}
impl Sub for OffsetDateTime {
type Output = Duration;
/// # Panics
///
/// This may panic if an overflow occurs.
fn sub(self, rhs: Self) -> Self::Output {
let base = self.date_time() - rhs.date_time();
let adjustment = Duration::seconds(
(self.offset.whole_seconds() - rhs.offset.whole_seconds()).extend::<i64>(),
);
base - adjustment
}
}