62 lines
1.8 KiB
Rust
62 lines
1.8 KiB
Rust
// Copyright 2018 The Rust Project Developers. See the COPYRIGHT
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// file at the top-level directory of this distribution and at
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// http://rust-lang.org/COPYRIGHT.
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//
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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
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// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
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// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
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// option. This file may not be copied, modified, or distributed
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// except according to those terms.
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use time::Duration;
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use sys::unsupported_err;
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#[derive(Copy, Clone, PartialEq, Eq, PartialOrd, Ord, Debug, Hash)]
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pub struct Instant(Duration);
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#[derive(Copy, Clone, PartialEq, Eq, PartialOrd, Ord, Debug, Hash)]
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pub struct SystemTime(Duration);
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pub const UNIX_EPOCH: SystemTime = SystemTime(Duration::from_secs(0));
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impl Instant {
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pub fn now() -> Instant {
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panic!("{}", unsupported_err());
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}
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pub fn sub_instant(&self, other: &Instant) -> Duration {
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self.0 - other.0
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}
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pub fn add_duration(&self, other: &Duration) -> Instant {
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Instant(self.0 + *other)
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}
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pub fn sub_duration(&self, other: &Duration) -> Instant {
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Instant(self.0 - *other)
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}
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}
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impl SystemTime {
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pub fn now() -> SystemTime {
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panic!("{}", unsupported_err());
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}
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pub fn sub_time(&self, other: &SystemTime)
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-> Result<Duration, Duration> {
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self.0.checked_sub(other.0).ok_or_else(|| other.0 - self.0)
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}
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pub fn add_duration(&self, other: &Duration) -> SystemTime {
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SystemTime(self.0 + *other)
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}
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pub fn checked_add_duration(&self, other: &Duration) -> Option<SystemTime> {
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self.0.checked_add(*other).map(|d| SystemTime(d))
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}
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pub fn sub_duration(&self, other: &Duration) -> SystemTime {
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SystemTime(self.0 - *other)
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}
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}
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