Messages in this thread Patch in this message | | | From | Miguel Ojeda <> | Subject | [PATCH v1 27/28] rust: types: add `Either` type | Date | Thu, 10 Nov 2022 17:41:39 +0100 |
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From: Wedson Almeida Filho <wedsonaf@gmail.com>
Introduce the new `types` module of the `kernel` crate with `Either` as its first type.
`Either<L, R>` is a sum type that always holds either a value of type `L` (`Left` variant) or `R` (`Right` variant).
For instance:
struct Executor { queue: Either<BoxedQueue, &'static Queue>, }
Signed-off-by: Wedson Almeida Filho <wedsonaf@gmail.com> [Reworded, adapted for upstream and applied latest changes] Signed-off-by: Miguel Ojeda <ojeda@kernel.org> --- rust/kernel/lib.rs | 1 + rust/kernel/types.rs | 12 ++++++++++++ 2 files changed, 13 insertions(+) create mode 100644 rust/kernel/types.rs
diff --git a/rust/kernel/lib.rs b/rust/kernel/lib.rs index a3abc110ff97..53040fa9e897 100644 --- a/rust/kernel/lib.rs +++ b/rust/kernel/lib.rs @@ -31,6 +31,7 @@ mod static_assert; #[doc(hidden)] pub mod std_vendor; pub mod str; +pub mod types; #[doc(hidden)] pub use bindings; diff --git a/rust/kernel/types.rs b/rust/kernel/types.rs new file mode 100644 index 000000000000..3b0c44769708 --- /dev/null +++ b/rust/kernel/types.rs @@ -0,0 +1,12 @@ +// SPDX-License-Identifier: GPL-2.0 + +//! Kernel types. + +/// A sum type that always holds either a value of type `L` or `R`. +pub enum Either<L, R> { + /// Constructs an instance of [`Either`] containing a value of type `L`. + Left(L), + + /// Constructs an instance of [`Either`] containing a value of type `R`. + Right(R), +} -- 2.38.1
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