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-rw-r--r--rust/kernel/slice.rs49
1 files changed, 0 insertions, 49 deletions
diff --git a/rust/kernel/slice.rs b/rust/kernel/slice.rs
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index ca2cde135061..000000000000
--- a/rust/kernel/slice.rs
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@@ -1,49 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-
-//! Additional (and temporary) slice helpers.
-
-/// Extension trait providing a portable version of [`as_flattened`] and
-/// [`as_flattened_mut`].
-///
-/// In Rust 1.80, the previously unstable `slice::flatten` family of methods
-/// have been stabilized and renamed from `flatten` to `as_flattened`.
-///
-/// This creates an issue for as long as the MSRV is < 1.80, as the same functionality is provided
-/// by different methods depending on the compiler version.
-///
-/// This extension trait solves this by abstracting `as_flatten` and calling the correct method
-/// depending on the Rust version.
-///
-/// This trait can be removed once the MSRV passes 1.80.
-///
-/// [`as_flattened`]: https://doc.rust-lang.org/std/primitive.slice.html#method.as_flattened
-/// [`as_flattened_mut`]: https://doc.rust-lang.org/std/primitive.slice.html#method.as_flattened_mut
-#[cfg(not(CONFIG_RUSTC_HAS_SLICE_AS_FLATTENED))]
-pub trait AsFlattened<T> {
- /// Takes a `&[[T; N]]` and flattens it to a `&[T]`.
- ///
- /// This is an portable layer on top of [`as_flattened`]; see its documentation for details.
- ///
- /// [`as_flattened`]: https://doc.rust-lang.org/std/primitive.slice.html#method.as_flattened
- fn as_flattened(&self) -> &[T];
-
- /// Takes a `&mut [[T; N]]` and flattens it to a `&mut [T]`.
- ///
- /// This is an portable layer on top of [`as_flattened_mut`]; see its documentation for details.
- ///
- /// [`as_flattened_mut`]: https://doc.rust-lang.org/std/primitive.slice.html#method.as_flattened_mut
- fn as_flattened_mut(&mut self) -> &mut [T];
-}
-
-#[cfg(not(CONFIG_RUSTC_HAS_SLICE_AS_FLATTENED))]
-impl<T, const N: usize> AsFlattened<T> for [[T; N]] {
- #[allow(clippy::incompatible_msrv)]
- fn as_flattened(&self) -> &[T] {
- self.flatten()
- }
-
- #[allow(clippy::incompatible_msrv)]
- fn as_flattened_mut(&mut self) -> &mut [T] {
- self.flatten_mut()
- }
-}