archway/kind/
rc.rs

1use alloc::rc::{Rc, Weak};
2
3use crate::kind::PointerKind;
4use crate::shared::AnySharedPointer;
5use crate::weak::AnyWeakPointer;
6
7impl<T: Sized> AnySharedPointer<T> for Rc<T> {
8    type Weak = Weak<T>;
9    fn downgrade(&self) -> Self::Weak {
10        Rc::downgrade(self)
11    }
12}
13impl<T: Sized> AnyWeakPointer<T> for Weak<T> {
14    type Shared = Rc<T>;
15    fn upgrade(&self) -> Option<Self::Shared> {
16        Weak::upgrade(self)
17    }
18}
19
20/// [`PointerKind`] implementor for [`Rc`].
21#[derive(Debug, Copy, Clone)]
22pub struct RcKind;
23
24impl PointerKind for RcKind {
25    type Shared<T> = Rc<T>;
26    type Weak<T> = Weak<T>;
27}