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

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Message-ID: <CAH5fLgg+3B5SCFwxLz_YJT1hqU+Ev+XvLT+hA4OLpBk7Oi6Xrw@mail.gmail.com>
Date:   Mon, 9 Oct 2023 12:02:26 +0200
From:   Alice Ryhl <aliceryhl@...gle.com>
To:     Trevor Gross <tmgross@...ch.edu>
Cc:     Miguel Ojeda <ojeda@...nel.org>,
        Alex Gaynor <alex.gaynor@...il.com>,
        Wedson Almeida Filho <wedsonaf@...il.com>,
        Boqun Feng <boqun.feng@...il.com>, Gary Guo <gary@...yguo.net>,
        Björn Roy Baron <bjorn3_gh@...tonmail.com>,
        Benno Lossin <benno.lossin@...ton.me>,
        Andreas Hindborg <a.hindborg@...sung.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 Sun, Oct 8, 2023 at 11:51 AM Trevor Gross <tmgross@...ch.edu> 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: Alice Ryhl <aliceryhl@...gle.com>