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| author | Andreas Hindborg <a.hindborg@kernel.org> | 2025-02-27 15:38:08 +0100 |
|---|---|---|
| committer | Miguel Ojeda <ojeda@kernel.org> | 2025-03-20 21:44:47 +0100 |
| commit | 50a5ff0a95a54d5a710f1f2547ecf8af12b6b83a (patch) | |
| tree | 7c3a63e5beeebba9dc0a2842e68cdae2f7761caf /rust | |
| parent | 3eff946dfec732ca9e8585bd44f93acc12646d21 (diff) | |
rust: str: implement `Index` for `BStr`
The `Index` implementation on `BStr` was lost when we switched `BStr` from
a type alias of `[u8]` to a newtype. Add back `Index` by implementing
`Index` for `BStr` when `Index` would be implemented for `[u8]`.
Reviewed-by: Daniel Almeida <daniel.almeida@collabora.com>
Tested-by: Daniel Almeida <daniel.almeida@collabora.com>
Reviewed-by: Fiona Behrens <me@kloenk.dev>
Signed-off-by: Andreas Hindborg <a.hindborg@kernel.org>
Reviewed-by: Alice Ryhl <aliceryhl@google.com>
Tested-by: Daniel Gomez <da.gomez@samsung.com>
Link: https://lore.kernel.org/r/20250227-module-params-v3-v8-2-ceeee85d9347@kernel.org
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
Diffstat (limited to 'rust')
| -rw-r--r-- | rust/kernel/str.rs | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/rust/kernel/str.rs b/rust/kernel/str.rs index 002dcddf7c76..ba6b1a5c4f99 100644 --- a/rust/kernel/str.rs +++ b/rust/kernel/str.rs @@ -114,6 +114,17 @@ impl PartialEq for BStr { } } +impl<Idx> Index<Idx> for BStr +where + [u8]: Index<Idx, Output = [u8]>, +{ + type Output = Self; + + fn index(&self, index: Idx) -> &Self::Output { + BStr::from_bytes(&self.0[index]) + } +} + /// Creates a new [`BStr`] from a string literal. /// /// `b_str!` converts the supplied string literal to byte string, so non-ASCII |