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Message-ID: <20221114145845.519fe889@GaryWorkstation>
Date: Mon, 14 Nov 2022 14:58:45 +0000
From: Gary Guo <gary@...yguo.net>
To: Miguel Ojeda <ojeda@...nel.org>
Cc: Wedson Almeida Filho <wedsonaf@...il.com>,
Alex Gaynor <alex.gaynor@...il.com>,
Boqun Feng <boqun.feng@...il.com>,
Björn Roy Baron <bjorn3_gh@...tonmail.com>,
rust-for-linux@...r.kernel.org, linux-kernel@...r.kernel.org,
patches@...ts.linux.dev
Subject: Re: [PATCH v1 22/28] rust: str: add `fmt!` macro
On Thu, 10 Nov 2022 17:41:34 +0100
Miguel Ojeda <ojeda@...nel.org> wrote:
> From: Wedson Almeida Filho <wedsonaf@...il.com>
>
> Add the `fmt!` macro, which is a convenience alias for the Rust
> `core::format_args!` macro.
>
> For instance, it may be used to create a `CString`:
>
> CString::try_from_fmt(fmt!("{}{}", "abc", 42))?
>
> Signed-off-by: Wedson Almeida Filho <wedsonaf@...il.com>
> [Reworded, adapted for upstream and applied latest changes]
> Signed-off-by: Miguel Ojeda <ojeda@...nel.org>
Reviewed-by: Gary Guo <gary@...yguo.net>
> ---
> rust/kernel/str.rs | 6 ++++++
> 1 file changed, 6 insertions(+)
>
> diff --git a/rust/kernel/str.rs b/rust/kernel/str.rs
> index 877148b77e71..ffac633423db 100644
> --- a/rust/kernel/str.rs
> +++ b/rust/kernel/str.rs
> @@ -592,3 +592,9 @@ impl Deref for CString {
> unsafe { CStr::from_bytes_with_nul_unchecked(self.buf.as_slice()) }
> }
> }
> +
> +/// A convenience alias for [`core::format_args`].
> +#[macro_export]
> +macro_rules! fmt {
> + ($($f:tt)*) => ( core::format_args!($($f)*) )
> +}
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