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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-17 12:02:58 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-17 12:02:58 +0000
commit698f8c2f01ea549d77d7dc3338a12e04c11057b9 (patch)
tree173a775858bd501c378080a10dca74132f05bc50 /vendor/chrono/src/offset/utc.rs
parentInitial commit. (diff)
downloadrustc-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')
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diff --git a/vendor/chrono/src/offset/utc.rs b/vendor/chrono/src/offset/utc.rs
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+// 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")
+ }
+}