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use chrono::Datelike;
use error::ErrorKind as KEK;
use failure::Fallible as Result;
use failure::Error;
use indicator::Day;
use indicator::Month;
use timetype::TimeType;
/// A trait to extend indicator::* to be able to match them with a TimeType object
pub trait Matcher {
fn matches(&self, tt: &TimeType) -> Result<bool>;
}
impl Matcher for Day {
fn matches(&self, tt: &TimeType) -> Result<bool> {
let this : ::chrono::Weekday = self.clone().into();
tt.get_moment()
.map(|mom| this == mom.weekday())
.ok_or(Error::from(KEK::ArgumentErrorNotAMoment(tt.name())))
}
}
impl Matcher for Month {
fn matches(&self, tt: &TimeType) -> Result<bool> {
let this : u32 = self.clone().into();
tt.get_moment()
.map(|mom| this == mom.month())
.ok_or(Error::from(KEK::ArgumentErrorNotAMoment(tt.name())))
}
}
#[cfg(feature = "with-filters")]
use filters::filter::*;
#[cfg(feature = "with-filters")]
impl<F> Matcher for F
where F: Filter<TimeType>
{
fn matches(&self, tt: &TimeType) -> Result<bool> {
Ok(self.filter(tt))
}
}
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