devela/sys/mem/storage/
boxed.rs

1// devela::sys::mem::storage::boxed
2//
3//! *Boxed* storage
4//
5
6#[cfg(doc)]
7use crate::{Bare, BareBox};
8use crate::{Box, ConstDefault, Storage};
9// #[cfg(feature = "dep_rkyv")] // DEP_DISABLED
10// use rkyv::{Archive, Deserialize, Serialize};
11
12/// A zero-sized marker for a [`Storage`] type that wraps its data in a [`Box`].
13///
14/// Equivalent to the [`Bare`] marker struct which uses a [`BareBox`] for the underlying storage.
15// #[cfg_attr(feature = "dep_rkyv", derive(Archive, Serialize, Deserialize))]
16#[derive(Clone, Copy, Default, PartialEq, Eq)]
17pub struct Boxed;
18
19/// This implementation is equivalent to the one for [`Bare`] which uses [`BareBox`] for storage.
20impl Storage for Boxed {
21    type Stored<T> = Box<T>;
22
23    fn name() -> &'static str {
24        "Boxed"
25    }
26}
27impl ConstDefault for Boxed {
28    const DEFAULT: Self = Boxed;
29}