diff options
| -rw-r--r-- | library/core/src/iter/traits/collect.rs | 20 |
1 files changed, 6 insertions, 14 deletions
diff --git a/library/core/src/iter/traits/collect.rs b/library/core/src/iter/traits/collect.rs index 16211610f05..8e2d7b9b4a6 100644 --- a/library/core/src/iter/traits/collect.rs +++ b/library/core/src/iter/traits/collect.rs @@ -494,25 +494,17 @@ 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, $default_fn_name, #[stable(feature = "extend_for_more_tuples", since = "CURRENT_RUSTC_VERSION")] #[doc(fake_variadic)] #[doc = "This trait is implemented for tuples up to twelve items long."] => ($ty_name, $var_name, $extend_ty_name, $cnt),); - }; - // Special case (A, B) as this was stabilized earlier - ( ($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, $default_fn_name, #[stable(feature = "extend_for_tuple", since = "1.56.0")] => ($ty_name, $var_name, $extend_ty_name, $cnt), ($ty_names, $var_names, $extend_ty_names, $cnts),); + spec_tuple_impl!($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), $(($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, $default_fn_name, #[stable(feature = "extend_for_more_tuples", since = "CURRENT_RUSTC_VERSION")] #[doc(hidden)] => ($ty_name, $var_name, $extend_ty_name, $cnt), $(($ty_names, $var_names, $extend_ty_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, $default_fn_name:ident, #[$stable:meta] $(#[$meta:meta] $(#[$doctext:meta])?)? => $(($ty_names:ident, $var_names:ident, $extend_ty_names:ident, $cnts:tt),)*) => { - $(#[$meta] - $(#[$doctext])? - )? - #[$stable] + ($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")] impl<$($ty_names,)* $($extend_ty_names,)*> Extend<($($ty_names,)*)> for ($($extend_ty_names,)*) where $($extend_ty_names: Extend<$ty_names>,)* |