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Constify impl Fn* &(mut) Fn*

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This commit is contained in:
onestacked 2022-09-14 01:42:40 +02:00
parent c97922dca5
commit 404b60bf6b
1 changed files with 15 additions and 10 deletions
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25
library/core/src/ops/function.rs
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@ -250,9 +250,10 @@ pub trait FnOnce<Args> {
mod impls {
#[stable(feature = "rust1", since = "1.0.0")]
impl<A, F: ?Sized> Fn<A> for &F
#[rustc_const_unstable(feature = "const_fn_trait_ref_impls", issue = "none")]
impl<A, F: ?Sized> const Fn<A> for &F
where
F: Fn<A>,
F: ~const Fn<A>,
{
extern "rust-call" fn call(&self, args: A) -> F::Output {
(**self).call(args)
@ -260,9 +261,10 @@ mod impls {
}
#[stable(feature = "rust1", since = "1.0.0")]
impl<A, F: ?Sized> FnMut<A> for &F
#[rustc_const_unstable(feature = "const_fn_trait_ref_impls", issue = "none")]
impl<A, F: ?Sized> const FnMut<A> for &F
where
F: Fn<A>,
F: ~const Fn<A>,
{
extern "rust-call" fn call_mut(&mut self, args: A) -> F::Output {
(**self).call(args)
@ -270,9 +272,10 @@ mod impls {
}
#[stable(feature = "rust1", since = "1.0.0")]
impl<A, F: ?Sized> FnOnce<A> for &F
#[rustc_const_unstable(feature = "const_fn_trait_ref_impls", issue = "none")]
impl<A, F: ?Sized> const FnOnce<A> for &F
where
F: Fn<A>,
F: ~const Fn<A>,
{
type Output = F::Output;
@ -282,9 +285,10 @@ mod impls {
}
#[stable(feature = "rust1", since = "1.0.0")]
impl<A, F: ?Sized> FnMut<A> for &mut F
#[rustc_const_unstable(feature = "const_fn_trait_ref_impls", issue = "none")]
impl<A, F: ?Sized> const FnMut<A> for &mut F
where
F: FnMut<A>,
F: ~const FnMut<A>,
{
extern "rust-call" fn call_mut(&mut self, args: A) -> F::Output {
(*self).call_mut(args)
@ -292,9 +296,10 @@ mod impls {
}
#[stable(feature = "rust1", since = "1.0.0")]
impl<A, F: ?Sized> FnOnce<A> for &mut F
#[rustc_const_unstable(feature = "const_fn_trait_ref_impls", issue = "none")]
impl<A, F: ?Sized> const FnOnce<A> for &mut F
where
F: FnMut<A>,
F: ~const FnMut<A>,
{
type Output = F::Output;
extern "rust-call" fn call_once(self, args: A) -> F::Output {