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

Andreas Hindborg
2025-02-18T13:02:05Z

Implement `AsRef<BStr>` for `[u8]` and `BStr` so these can be used
interchangeably for operations on `BStr`.

Signed-off-by: Andreas Hindborg <a.hindborg@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
+ }
+}
+
/// Creates a new [`BStr`] from a string literal.
///
/// `b_str!` converts the supplied string literal to byte string, so non-ASCII

--
2.47.0