Re: [PATCH v7 3/6] rust: str: implement `AsRef` for `[u8]` and `BStr`

[Daniel Almeida]

> On 18 Feb 2025, at 10:00, Andreas Hindborg <a.hindb...@kernel.org> wrote:
> 
> Implement `AsRef<BStr>` for `[u8]` and `BStr` so these can be used
> interchangeably for operations on `BStr`.
> 
> Signed-off-by: Andreas Hindborg <a.hindb...@kernel.org>
> ---
> rust/kernel/str.rs | 12 ++++++++++++
> 1 file changed, 12 insertions(+)
> 
> diff --git a/rust/kernel/str.rs b/rust/kernel/str.rs
> index ba6b1a5c4f99d..c6bd2c69543dc 100644
> --- a/rust/kernel/str.rs
> +++ b/rust/kernel/str.rs
> @@ -125,6 +125,18 @@ fn index(&self, index: Idx) -> &Self::Output {
>     }
> }
> 
> +impl AsRef<BStr> for [u8] {
> +    fn as_ref(&self) -> &BStr {
> +        BStr::from_bytes(self)
> +    }
> +}
> +
> +impl AsRef<BStr> for BStr {
> +    fn as_ref(&self) -> &BStr {
> +        self
> +    }
> +}

Why do you need this last one?

> +
> /// Creates a new [`BStr`] from a string literal.
> ///
> /// `b_str!` converts the supplied string literal to byte string, so non-ASCII
> 
> -- 
> 2.47.0
> 
> 
>