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Correct spelling of CURRENT_RUSTC_VERSION

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I mixed it up with RUSTC_CURRENT_VERSION unfortunately. Also improve the
formatting of the macro invocation slightly.
This commit is contained in:
Sebastian Hahn 2024-12-08 08:14:05 +01:00
parent 9c707a8b76
commit 7717df2286
1 changed files with 56 additions and 7 deletions
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63
library/core/src/iter/traits/collect.rs
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@ -493,15 +493,64 @@ impl Extend<()> for () {
}
macro_rules! spec_tuple_impl {
( ($ty_name:ident, $var_name:ident, $extend_ty_name: ident, $trait_name:ident, $default_fn_name:ident, $cnt:tt), ) => {
spec_tuple_impl!($trait_name, $default_fn_name, #[doc(fake_variadic)] #[doc = "This trait is implemented for tuples up to twelve items long. The `impl`s for 1- and 3- through 12-ary tuples were stabilized after 2-tuples, in RUSTC_CURRENT_VERSION."] => ($ty_name, $var_name, $extend_ty_name, $cnt),);
(
(
$ty_name:ident, $var_name:ident, $extend_ty_name: ident,
$trait_name:ident, $default_fn_name:ident, $cnt:tt
),
) => {
spec_tuple_impl!(
$trait_name,
$default_fn_name,
#[doc(fake_variadic)]
#[doc = "This trait is implemented for tuples up to twelve items long. The `impl`s for \
1- and 3- through 12-ary tuples were stabilized after 2-tuples, in \
CURRENT_RUSTC_VERSION."]
=> ($ty_name, $var_name, $extend_ty_name, $cnt),
);
};
( ($ty_name:ident, $var_name:ident, $extend_ty_name: ident, $trait_name:ident, $default_fn_name:ident, $cnt:tt), $(($ty_names:ident, $var_names:ident, $extend_ty_names:ident, $trait_names:ident, $default_fn_names:ident, $cnts:tt),)*) => {
spec_tuple_impl!($(($ty_names, $var_names, $extend_ty_names, $trait_names, $default_fn_names, $cnts),)*);
spec_tuple_impl!($trait_name, $default_fn_name, #[doc(hidden)] => ($ty_name, $var_name, $extend_ty_name, $cnt), $(($ty_names, $var_names, $extend_ty_names, $cnts),)*);
(
(
$ty_name:ident, $var_name:ident, $extend_ty_name: ident,
$trait_name:ident, $default_fn_name:ident, $cnt:tt
),
$(
(
$ty_names:ident, $var_names:ident, $extend_ty_names:ident,
$trait_names:ident, $default_fn_names:ident, $cnts:tt
),
)*
) => {
spec_tuple_impl!(
$(
(
$ty_names, $var_names, $extend_ty_names,
$trait_names, $default_fn_names, $cnts
),
)*
);
spec_tuple_impl!(
$trait_name,
$default_fn_name,
#[doc(hidden)]
=> (
$ty_name, $var_name, $extend_ty_name, $cnt
),
$(
(
$ty_names, $var_names, $extend_ty_names, $cnts
),
)*
);
};
($trait_name:ident, $default_fn_name:ident, #[$meta:meta] $(#[$doctext:meta])? => $(($ty_names:ident, $var_names:ident, $extend_ty_names:ident, $cnts:tt),)*) => {
(
$trait_name:ident, $default_fn_name:ident, #[$meta:meta]
$(#[$doctext:meta])? => $(
(
$ty_names:ident, $var_names:ident, $extend_ty_names:ident, $cnts:tt
),
)*
) => {
#[$meta]
$(#[$doctext])?
#[stable(feature = "extend_for_tuple", since = "1.56.0")]