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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:02:58 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:02:58 +0000 |
commit | 698f8c2f01ea549d77d7dc3338a12e04c11057b9 (patch) | |
tree | 173a775858bd501c378080a10dca74132f05bc50 /vendor/chrono/src/offset/utc.rs | |
parent | Initial commit. (diff) | |
download | rustc-698f8c2f01ea549d77d7dc3338a12e04c11057b9.tar.xz rustc-698f8c2f01ea549d77d7dc3338a12e04c11057b9.zip |
Adding upstream version 1.64.0+dfsg1.upstream/1.64.0+dfsg1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'vendor/chrono/src/offset/utc.rs')
-rw-r--r-- | vendor/chrono/src/offset/utc.rs | 100 |
1 files changed, 100 insertions, 0 deletions
diff --git a/vendor/chrono/src/offset/utc.rs b/vendor/chrono/src/offset/utc.rs new file mode 100644 index 000000000..aec6667b0 --- /dev/null +++ b/vendor/chrono/src/offset/utc.rs @@ -0,0 +1,100 @@ +// This is a part of Chrono. +// See README.md and LICENSE.txt for details. + +//! The UTC (Coordinated Universal Time) time zone. + +use core::fmt; + +use super::{FixedOffset, LocalResult, Offset, TimeZone}; +use naive::{NaiveDate, NaiveDateTime}; +#[cfg(all( + feature = "clock", + not(all(target_arch = "wasm32", not(target_os = "wasi"), feature = "wasmbind")) +))] +use std::time::{SystemTime, UNIX_EPOCH}; +#[cfg(feature = "clock")] +use {Date, DateTime}; + +/// The UTC time zone. This is the most efficient time zone when you don't need the local time. +/// It is also used as an offset (which is also a dummy type). +/// +/// Using the [`TimeZone`](./trait.TimeZone.html) methods +/// on the UTC struct is the preferred way to construct `DateTime<Utc>` +/// instances. +/// +/// # Example +/// +/// ~~~~ +/// use chrono::{DateTime, TimeZone, NaiveDateTime, Utc}; +/// +/// let dt = DateTime::<Utc>::from_utc(NaiveDateTime::from_timestamp(61, 0), Utc); +/// +/// assert_eq!(Utc.timestamp(61, 0), dt); +/// assert_eq!(Utc.ymd(1970, 1, 1).and_hms(0, 1, 1), dt); +/// ~~~~ +#[derive(Copy, Clone, PartialEq, Eq)] +pub struct Utc; + +#[cfg(feature = "clock")] +impl Utc { + /// Returns a `Date` which corresponds to the current date. + pub fn today() -> Date<Utc> { + Utc::now().date() + } + + /// Returns a `DateTime` which corresponds to the current date. + #[cfg(not(all(target_arch = "wasm32", not(target_os = "wasi"), feature = "wasmbind")))] + pub fn now() -> DateTime<Utc> { + let now = + SystemTime::now().duration_since(UNIX_EPOCH).expect("system time before Unix epoch"); + let naive = NaiveDateTime::from_timestamp(now.as_secs() as i64, now.subsec_nanos() as u32); + DateTime::from_utc(naive, Utc) + } + + /// Returns a `DateTime` which corresponds to the current date. + #[cfg(all(target_arch = "wasm32", not(target_os = "wasi"), feature = "wasmbind"))] + pub fn now() -> DateTime<Utc> { + let now = js_sys::Date::new_0(); + DateTime::<Utc>::from(now) + } +} + +impl TimeZone for Utc { + type Offset = Utc; + + fn from_offset(_state: &Utc) -> Utc { + Utc + } + + fn offset_from_local_date(&self, _local: &NaiveDate) -> LocalResult<Utc> { + LocalResult::Single(Utc) + } + fn offset_from_local_datetime(&self, _local: &NaiveDateTime) -> LocalResult<Utc> { + LocalResult::Single(Utc) + } + + fn offset_from_utc_date(&self, _utc: &NaiveDate) -> Utc { + Utc + } + fn offset_from_utc_datetime(&self, _utc: &NaiveDateTime) -> Utc { + Utc + } +} + +impl Offset for Utc { + fn fix(&self) -> FixedOffset { + FixedOffset::east(0) + } +} + +impl fmt::Debug for Utc { + fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { + write!(f, "Z") + } +} + +impl fmt::Display for Utc { + fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { + write!(f, "UTC") + } +} |