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remove unnecessary box cast

This commit is contained in:
Øsystems 2020-01-21 14:43:16 +10:00
parent 9faebf313d
commit cacb725022
1 changed files with 5 additions and 8 deletions
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13
actix-http/src/extensions.rs
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@ -35,26 +35,23 @@ impl Extensions {
pub fn get<T: 'static>(&self) -> Option<&T> {
self.map
.get(&TypeId::of::<T>())
.and_then(|boxed| (&**boxed as &(dyn Any + 'static)).downcast_ref())
.and_then(|boxed| boxed.downcast_ref())
}
/// Get a mutable reference to a type previously inserted on this `Extensions`.
pub fn get_mut<T: 'static>(&mut self) -> Option<&mut T> {
self.map
.get_mut(&TypeId::of::<T>())
.and_then(|boxed| (&mut **boxed as &mut (dyn Any + 'static)).downcast_mut())
.and_then(|boxed| boxed.downcast_mut())
}
/// Remove a type from this `Extensions`.
///
/// If a extension of this type existed, it will be returned.
pub fn remove<T: 'static>(&mut self) -> Option<T> {
self.map.remove(&TypeId::of::<T>()).and_then(|boxed| {
(boxed as Box<dyn Any + 'static>)
.downcast()
.ok()
.map(|boxed| *boxed)
})
self.map
.remove(&TypeId::of::<T>())
.and_then(|boxed| boxed.downcast().ok().map(|boxed| *boxed))
}
/// Clear the `Extensions` of all inserted extensions.