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cleanup

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This commit is contained in:
koe 2024-08-31 13:27:48 -05:00 • committed by Jeremy Soller
parent b68f4ad5c6
commit f89e64aa76
3 changed files with 14 additions and 6 deletions
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8
src/cached.rs
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@ -9,6 +9,7 @@ pub enum Cached<T: Clone + Debug> {
}
impl<T: Clone + Debug> Cached<T> {
/// Gets the value if in state `Self::Used`.
pub fn get(&self) -> Option<&T> {
match self {
Self::Empty | Self::Unused(_) => None,
@ -16,6 +17,7 @@ impl<T: Clone + Debug> Cached<T> {
}
}
/// Gets the value mutably if in state `Self::Used`.
pub fn get_mut(&mut self) -> Option<&mut T> {
match self {
Self::Empty | Self::Unused(_) => None,
@ -23,6 +25,7 @@ impl<T: Clone + Debug> Cached<T> {
}
}
/// Checks if the value is empty or unused.
pub fn is_unused(&self) -> bool {
match self {
Self::Empty | Self::Unused(_) => true,
@ -30,6 +33,7 @@ impl<T: Clone + Debug> Cached<T> {
}
}
/// Checks if the value is used (i.e. cached for access).
pub fn is_used(&self) -> bool {
match self {
Self::Empty | Self::Unused(_) => false,
@ -37,6 +41,7 @@ impl<T: Clone + Debug> Cached<T> {
}
}
/// Takes the buffered value if in state `Self::Unused`.
pub fn take_unused(&mut self) -> Option<T> {
if matches!(*self, Self::Unused(_)) {
let Self::Unused(val) = std::mem::replace(self, Self::Empty) else {
@ -48,6 +53,7 @@ impl<T: Clone + Debug> Cached<T> {
}
}
/// Takes the cached value if in state `Self::Used`.
pub fn take_used(&mut self) -> Option<T> {
if matches!(*self, Self::Used(_)) {
let Self::Used(val) = std::mem::replace(self, Self::Empty) else {
@ -59,12 +65,14 @@ impl<T: Clone + Debug> Cached<T> {
}
}
/// Moves the value from `Self::Used` to `Self::Unused`.
pub fn set_unused(&mut self) {
if matches!(*self, Self::Used(_)) {
*self = Self::Unused(self.take_used().unwrap());
}
}
/// Sets the value to `Self::Used`.
pub fn set_used(&mut self, val: T) {
*self = Self::Used(val);
}