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update "reason" for fnbox feature gate #33590

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merged 2 commits into from
May 15, 2016
Merged

update "reason" for fnbox feature gate #33590

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df4fe5f
update "reason" for fnbox feature gate
durka May 12, 2016
b9fce76
fix tidy
durka May 12, 2016
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12 changes: 8 additions & 4 deletions src/liballoc/boxed.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -525,14 +525,16 @@ impl<I: ExactSizeIterator + ?Sized> ExactSizeIterator for Box<I> {}
/// }
/// ```
#[rustc_paren_sugar]
#[unstable(feature = "fnbox", reason = "Newly introduced", issue = "28796")]
#[unstable(feature = "fnbox",
reason = "will be deprecated if and when Box<FnOnce> becomes usable", issue = "28796")]
pub trait FnBox<A> {
type Output;

fn call_box(self: Box<Self>, args: A) -> Self::Output;
}

#[unstable(feature = "fnbox", reason = "Newly introduced", issue = "28796")]
#[unstable(feature = "fnbox",
reason = "will be deprecated if and when Box<FnOnce> becomes usable", issue = "28796")]
impl<A, F> FnBox<A> for F where F: FnOnce<A>
{
type Output = F::Output;
Expand All @@ -542,7 +544,8 @@ impl<A, F> FnBox<A> for F where F: FnOnce<A>
}
}

#[unstable(feature = "fnbox", reason = "Newly introduced", issue = "28796")]
#[unstable(feature = "fnbox",
reason = "will be deprecated if and when Box<FnOnce> becomes usable", issue = "28796")]
impl<'a, A, R> FnOnce<A> for Box<FnBox<A, Output = R> + 'a> {
type Output = R;

Expand All @@ -551,7 +554,8 @@ impl<'a, A, R> FnOnce<A> for Box<FnBox<A, Output = R> + 'a> {
}
}

#[unstable(feature = "fnbox", reason = "Newly introduced", issue = "28796")]
#[unstable(feature = "fnbox",
reason = "will be deprecated if and when Box<FnOnce> becomes usable", issue = "28796")]
impl<'a, A, R> FnOnce<A> for Box<FnBox<A, Output = R> + Send + 'a> {
type Output = R;

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