Commit Graph

3 Commits

Author SHA1 Message Date
Gary Guo
a863b21b1e rust: macros: convert concat_idents! to use syn
This eliminates the need for `expect_punct` helper.

Reviewed-by: Tamir Duberstein <tamird@gmail.com>
Reviewed-by: Benno Lossin <lossin@kernel.org>
Signed-off-by: Gary Guo <gary@garyguo.net>
Link: https://patch.msgid.link/20260112170919.1888584-8-gary@kernel.org
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
2026-01-28 00:55:25 +01:00
Gary Guo
f637bafe1f rust: macros: use quote! from vendored crate
With `quote` crate now vendored in the kernel, we can remove our custom
`quote!` macro implementation and just rely on that crate instead.

The `quote` crate uses types from the `proc-macro2` library so we also
update to use that, and perform conversion in the top-level lib.rs.

Clippy complains about unnecessary `.to_string()` as `proc-macro2`
provides additional `PartialEq` impl, so they are removed.

Reviewed-by: Tamir Duberstein <tamird@gmail.com>
Reviewed-by: Benno Lossin <lossin@kernel.org>
Signed-off-by: Gary Guo <gary@garyguo.net>
Acked-by: David Gow <davidgow@google.com> # for kunit
Link: https://patch.msgid.link/20260112170919.1888584-3-gary@kernel.org
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
2026-01-28 00:55:24 +01:00
Björn Roy Baron
60f18c225f rust: macros: add concat_idents! proc macro
This macro provides similar functionality to the unstable feature
`concat_idents` without having to rely on it.

For instance:

    let x_1 = 42;
    let x_2 = concat_idents!(x, _1);
    assert!(x_1 == x_2);

It has different behavior with respect to macro hygiene. Unlike
the unstable `concat_idents!` macro, it allows, for example,
referring to local variables by taking the span of the second
macro as span for the output identifier.

Signed-off-by: Björn Roy Baron <bjorn3_gh@protonmail.com>
Reviewed-by: Finn Behrens <me@kloenk.dev>
Reviewed-by: Gary Guo <gary@garyguo.net>
[Reworded, adapted for upstream and applied latest changes]
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
2022-12-04 01:59:04 +01:00