Commit c2af0e5f authored by Miguel Ojeda's avatar Miguel Ojeda
Browse files

rust: proc-macro2: remove `unicode_ident` dependency 



The `proc-macro2` crate depends on the `unicode-ident` crate to determine
whether characters have the XID_Start or XID_Continue properties according
to Unicode Standard Annex #31.

However, we only need ASCII identifiers in the kernel, thus we can
simplify the check and remove completely that dependency.

Reviewed-by: default avatarAlice Ryhl <aliceryhl@google.com>
Reviewed-by: default avatarGary Guo <gary@garyguo.net>
Tested-by: default avatarGary Guo <gary@garyguo.net>
Tested-by: default avatarJesung Yang <y.j3ms.n@gmail.com>
Link: https://patch.msgid.link/20251124151837.2184382-9-ojeda@kernel.org


Signed-off-by: default avatarMiguel Ojeda <ojeda@kernel.org>
parent a9acfceb

rust/proc-macro2/fallback.rs

+2 −2
Original line number Diff line number Diff line
@@ -818,11 +818,11 @@ pub(crate) fn set_span(&mut self, span: Span) { 
}



pub(crate) fn is_ident_start(c: char) -> bool {

    c == '_' || unicode_ident::is_xid_start(c)

    c == '_' || c.is_ascii_alphabetic()

}



pub(crate) fn is_ident_continue(c: char) -> bool {

    unicode_ident::is_xid_continue(c)

    c == '_' || c.is_ascii_alphanumeric()

}



#[track_caller]