| use crate::time::Duration; |
| |
| #[derive(Copy, Clone, PartialEq, Eq, PartialOrd, Ord, Debug, Hash)] |
| pub struct Instant(Duration); |
| |
| #[derive(Copy, Clone, PartialEq, Eq, PartialOrd, Ord, Debug, Hash)] |
| pub struct SystemTime(Duration); |
| |
| pub const UNIX_EPOCH: SystemTime = SystemTime(Duration::from_secs(0)); |
| |
| impl Instant { |
| pub fn now() -> Instant { |
| panic!("time not implemented on this platform") |
| } |
| |
| pub fn checked_sub_instant(&self, other: &Instant) -> Option<Duration> { |
| self.0.checked_sub(other.0) |
| } |
| |
| pub fn checked_add_duration(&self, other: &Duration) -> Option<Instant> { |
| Some(Instant(self.0.checked_add(*other)?)) |
| } |
| |
| pub fn checked_sub_duration(&self, other: &Duration) -> Option<Instant> { |
| Some(Instant(self.0.checked_sub(*other)?)) |
| } |
| } |
| |
| impl SystemTime { |
| pub fn now() -> SystemTime { |
| panic!("time not implemented on this platform") |
| } |
| |
| pub fn sub_time(&self, other: &SystemTime) -> Result<Duration, Duration> { |
| self.0.checked_sub(other.0).ok_or_else(|| other.0 - self.0) |
| } |
| |
| pub fn checked_add_duration(&self, other: &Duration) -> Option<SystemTime> { |
| Some(SystemTime(self.0.checked_add(*other)?)) |
| } |
| |
| pub fn checked_sub_duration(&self, other: &Duration) -> Option<SystemTime> { |
| Some(SystemTime(self.0.checked_sub(*other)?)) |
| } |
| } |