moka 0.6.2

A fast and concurrent cache library inspired by Caffeine (Java)
Documentation 
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use std::time::Duration;

pub(crate) type Clock = quanta::Clock;
#[cfg(test)]
pub(crate) type Mock = quanta::Mock;

/// a wrapper type over qunta::Instant to force checked additions and prevent
/// unintentioal overflow. The type preserve the Copy semnatics for the wrapped
#[derive(PartialEq, PartialOrd, Clone, Copy)]
pub(crate) struct Instant(pub quanta::Instant);

pub(crate) trait CheckedTimeOps {
    fn checked_add(&self, duration: Duration) -> Option<Self>
    where
        Self: Sized;
}

impl Instant {
    pub(crate) fn new(instant: quanta::Instant) -> Instant {
        Instant(instant)
    }

    pub(crate) fn now() -> Instant {
        Instant(quanta::Instant::now())
    }
}

impl CheckedTimeOps for Instant {
    fn checked_add(&self, duration: Duration) -> Option<Instant> {
        self.0.checked_add(duration).map(Instant)
    }
}