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use crate::{
date::{MAX_YEAR, MIN_YEAR},
internal_prelude::*,
internals,
};
use rand::{
distributions::{Distribution, Standard},
Rng,
};
impl Distribution<Time> for Standard {
#[inline]
fn sample<R: Rng + ?Sized>(&self, rng: &mut R) -> Time {
Time {
hour: rng.gen_range(0, 24),
minute: rng.gen_range(0, 60),
second: rng.gen_range(0, 60),
nanosecond: rng.gen_range(0, 1_000_000_000),
}
}
}
impl Distribution<Date> for Standard {
#[inline]
fn sample<R: Rng + ?Sized>(&self, rng: &mut R) -> Date {
const MIN_DATE: Date = internals::Date::from_ymd_unchecked(MIN_YEAR, 1, 1);
const MAX_DATE: Date = internals::Date::from_ymd_unchecked(MAX_YEAR, 12, 31);
Date::from_julian_day(rng.gen_range(MIN_DATE.julian_day(), MAX_DATE.julian_day() + 1))
}
}
impl Distribution<UtcOffset> for Standard {
#[inline]
fn sample<R: Rng + ?Sized>(&self, rng: &mut R) -> UtcOffset {
UtcOffset {
seconds: rng.gen_range(-86_399, 86_400),
}
}
}
impl Distribution<PrimitiveDateTime> for Standard {
#[inline]
fn sample<R: Rng + ?Sized>(&self, rng: &mut R) -> PrimitiveDateTime {
PrimitiveDateTime {
date: Standard.sample(rng),
time: Standard.sample(rng),
}
}
}
impl Distribution<OffsetDateTime> for Standard {
#[inline]
fn sample<R: Rng + ?Sized>(&self, rng: &mut R) -> OffsetDateTime {
OffsetDateTime {
utc_datetime: Standard.sample(rng),
offset: Standard.sample(rng),
}
}
}
impl Distribution<Duration> for Standard {
#[inline]
fn sample<R: Rng + ?Sized>(&self, rng: &mut R) -> Duration {
let seconds = Standard.sample(rng);
Duration {
seconds,
nanoseconds: seconds.signum() as i32 * rng.gen_range(0, 1_000_000_000),
}
}
}
impl Distribution<Weekday> for Standard {
#[inline]
fn sample<R: Rng + ?Sized>(&self, rng: &mut R) -> Weekday {
use Weekday::*;
match rng.gen_range(0, 7) {
0 => Monday,
1 => Tuesday,
2 => Wednesday,
3 => Thursday,
4 => Friday,
5 => Saturday,
6 => Sunday,
_ => unreachable!("values are 0 to 6 inclusive"),
}
}
}