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use super::Possible;
impl<T: Copy> Possible<&T> {
/// Maps an `Possible<&T>` to an `Possible<T>` by copying the contents of the possiblity.
///
/// # Examples
///
/// ```
/// use possible::Possible;
///
/// let x = 12;
/// let y = Possible::Some(&x);
/// assert_eq!(y, Possible::Some(&12));
///
/// let copied = y.copied();
/// assert_eq!(copied, Possible::Some(12));
/// ```
pub fn copied(self) -> Possible<T> {
self.map(|&t| t)
}
}
impl<T: Copy> Possible<&mut T> {
/// Maps an `Possible<&mut T>` to an `Possible<T>` by copying the contents of the possiblity.
///
/// # Examples
///
/// ```
/// use possible::Possible;
///
/// let mut x = 12;
/// let y = Possible::Some(&mut x);
/// assert_eq!(y, Possible::Some(&mut 12));
///
/// let copied = y.copied();
/// assert_eq!(copied, Possible::Some(12));
/// ```
pub fn copied(self) -> Possible<T> {
self.map(|&mut t| t)
}
}
impl<T: Clone> Possible<&T> {
/// Maps an `Possible<&T>` to an `Possible<T>` by cloning the contents of the possiblity.
///
/// # Examples
///
/// ```
/// use possible::Possible;
///
/// let x = 12;
/// let y = Possible::Some(&x);
/// assert_eq!(y, Possible::Some(&12));
///
/// let cloned = y.cloned();
/// assert_eq!(cloned, Possible::Some(12));
/// ```
pub fn cloned(self) -> Possible<T> {
self.map(|t| t.clone())
}
}
impl<T: Clone> Possible<&mut T> {
/// Maps an `Possible<&mut T>` to an `Possible<T>` by cloning the contents of the possiblity.
///
/// # Examples
///
/// ```
/// use possible::Possible;
///
/// let mut x = 12;
/// let y = Possible::Some(&mut x);
/// assert_eq!(y, Possible::Some(&mut 12));
///
/// let cloned = y.cloned();
/// assert_eq!(cloned, Possible::Some(12));
/// ```
pub fn cloned(self) -> Possible<T> {
self.map(|t| t.clone())
}
}
impl<T: Clone> Clone for Possible<T> {
#[inline]
fn clone(&self) -> Self {
match self {
Possible::Some(x) => Possible::Some(x.clone()),
Possible::None => Possible::None,
Possible::Void => Possible::Void,
}
}
#[inline]
fn clone_from(&mut self, source: &Self) {
match (self, source) {
(Possible::Some(to), Possible::Some(from)) => to.clone_from(from),
(to, from) => *to = from.clone(),
}
}
}