From ef32054942ee8d78cbcc2c97212e55b6f5f668f7 Mon Sep 17 00:00:00 2001
From: Wedson Almeida Filho <wedsonaf@gmail.com>
Date: Thu, 10 Nov 2022 17:41:34 +0100
Subject: [PATCH] rust: str: add `fmt!` macro
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@gmail.com>
Reviewed-by: Gary Guo <gary@garyguo.net>
[Reworded, adapted for upstream and applied latest changes]
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
---
rust/kernel/str.rs | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/rust/kernel/str.rs b/rust/kernel/str.rs
index 17dc8d2733029..b771310fa4a49 100644
--- a/rust/kernel/str.rs
+++ b/rust/kernel/str.rs
@@ -583,3 +583,9 @@ fn deref(&self) -> &Self::Target {
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)*) )
+}
--
GitLab