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Move WeekdaySet constructors to the top

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This commit is contained in:
Dirkjan Ochtman 2025-03-23 09:52:00 +01:00
parent cac71f3f4d
commit cac4e8cf8d
1 changed files with 33 additions and 33 deletions
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66
src/weekday_set.rs
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@ -16,6 +16,39 @@ use crate::Weekday;
pub struct WeekdaySet(u8); // Invariant: the 8-th bit is always 0.
impl WeekdaySet {
/// Create a `WeekdaySet` from an array of `Weekday`s.
///
/// # Example
/// ```
/// # use chrono::WeekdaySet;
/// use chrono::Weekday::*;
/// assert_eq!(WeekdaySet::EMPTY, WeekdaySet::from_array([]));
/// assert_eq!(WeekdaySet::single(Mon), WeekdaySet::from_array([Mon]));
/// assert_eq!(WeekdaySet::ALL, WeekdaySet::from_array([Mon, Tue, Wed, Thu, Fri, Sat, Sun]));
/// ```
pub const fn from_array<const C: usize>(days: [Weekday; C]) -> Self {
let mut acc = Self::EMPTY;
let mut idx = 0;
while idx < days.len() {
acc.0 |= Self::single(days[idx]).0;
idx += 1;
}
acc
}
/// Create a `WeekdaySet` from a single `Weekday`.
pub const fn single(weekday: Weekday) -> Self {
match weekday {
Weekday::Mon => Self(0b000_0001),
Weekday::Tue => Self(0b000_0010),
Weekday::Wed => Self(0b000_0100),
Weekday::Thu => Self(0b000_1000),
Weekday::Fri => Self(0b001_0000),
Weekday::Sat => Self(0b010_0000),
Weekday::Sun => Self(0b100_0000),
}
}
/// Returns `Some(day)` if this collection contains exactly one day.
///
/// Returns `None` otherwise.
@ -285,39 +318,6 @@ impl WeekdaySet {
self.0.count_ones() as u8
}
/// Create a `WeekdaySet` from a single `Weekday`.
pub const fn single(weekday: Weekday) -> Self {
match weekday {
Weekday::Mon => Self(0b000_0001),
Weekday::Tue => Self(0b000_0010),
Weekday::Wed => Self(0b000_0100),
Weekday::Thu => Self(0b000_1000),
Weekday::Fri => Self(0b001_0000),
Weekday::Sat => Self(0b010_0000),
Weekday::Sun => Self(0b100_0000),
}
}
/// Create a `WeekdaySet` from an array of `Weekday`s.
///
/// # Example
/// ```
/// # use chrono::WeekdaySet;
/// use chrono::Weekday::*;
/// assert_eq!(WeekdaySet::EMPTY, WeekdaySet::from_array([]));
/// assert_eq!(WeekdaySet::single(Mon), WeekdaySet::from_array([Mon]));
/// assert_eq!(WeekdaySet::ALL, WeekdaySet::from_array([Mon, Tue, Wed, Thu, Fri, Sat, Sun]));
/// ```
pub const fn from_array<const C: usize>(days: [Weekday; C]) -> Self {
let mut acc = Self::EMPTY;
let mut idx = 0;
while idx < days.len() {
acc.0 |= Self::single(days[idx]).0;
idx += 1;
}
acc
}
/// An empty `WeekdaySet`.
pub const EMPTY: Self = Self(0b000_0000);
/// A `WeekdaySet` containing all seven `Weekday`s.