linux-kernel - Re: [PATCH] rust: macros: update 'paste!' macro to accept string literals

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Date:   Mon, 09 Oct 2023 14:51:33 +0000
From:   Benno Lossin <benno.lossin@...ton.me>
To:     Trevor Gross <tmgross@...ch.edu>, Miguel Ojeda <ojeda@...nel.org>,
        Alex Gaynor <alex.gaynor@...il.com>,
        Wedson Almeida Filho <wedsonaf@...il.com>
Cc:     Boqun Feng <boqun.feng@...il.com>, Gary Guo <gary@...yguo.net>,
        Björn Roy Baron <bjorn3_gh@...tonmail.com>,
        Andreas Hindborg <a.hindborg@...sung.com>,
        Alice Ryhl <aliceryhl@...gle.com>,
        Martin Rodriguez Reboredo <yakoyoku@...il.com>,
        rust-for-linux@...r.kernel.org, linux-kernel@...r.kernel.org,
        FUJITA Tomonori <fujita.tomonori@...il.com>
Subject: Re: [PATCH] rust: macros: update 'paste!' macro to accept string literals

On 08.10.23 11:48, Trevor Gross wrote:
> Enable combining identifiers with string literals in the 'paste!' macro.
> This allows combining user-specified strings with affixes to create
> namespaced identifiers.
> 
> This sample code:
> 
>      macro_rules! m {
>          ($name:lit) => {
>              paste!(struct [<_some_ $name _struct_>];)
>          }
>      }
> 
>      m!("foo_bar");
> 
> Would previously cause a compilation error. It will now generate:
> 
>      struct _some_foo_bar_struct_;
> 
> Reported-by: FUJITA Tomonori <fujita.tomonori@...il.com>
> Signed-off-by: Trevor Gross <tmgross@...ch.edu>

Reviewed-by: Benno Lossin <benno.lossin@...ton.me>