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Hide gen_future API from documentation #61523

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Jun 5, 2019
Merged

Hide gen_future API from documentation #61523

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6 changes: 6 additions & 0 deletions src/libstd/future.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -16,12 +16,14 @@ pub use core::future::*;
///
/// This function returns a `GenFuture` underneath, but hides it in `impl Trait` to give
/// better error messages (`impl Future` rather than `GenFuture<[closure.....]>`).
#[doc(hidden)]
#[unstable(feature = "gen_future", issue = "50547")]
pub fn from_generator<T: Generator<Yield = ()>>(x: T) -> impl Future<Output = T::Return> {
GenFuture(x)
}

/// A wrapper around generators used to implement `Future` for `async`/`await` code.
#[doc(hidden)]
#[unstable(feature = "gen_future", issue = "50547")]
#[derive(Copy, Clone, Debug, Eq, PartialEq, Ord, PartialOrd, Hash)]
struct GenFuture<T: Generator<Yield = ()>>(T);
Expand All @@ -30,6 +32,7 @@ struct GenFuture<T: Generator<Yield = ()>>(T);
// self-referential borrows in the underlying generator.
impl<T: Generator<Yield = ()>> !Unpin for GenFuture<T> {}

#[doc(hidden)]
#[unstable(feature = "gen_future", issue = "50547")]
impl<T: Generator<Yield = ()>> Future for GenFuture<T> {
type Output = T::Return;
Expand Down Expand Up @@ -57,6 +60,7 @@ impl Drop for SetOnDrop {
}
}

#[doc(hidden)]
#[unstable(feature = "gen_future", issue = "50547")]
/// Sets the thread-local task context used by async/await futures.
pub fn set_task_context<F, R>(cx: &mut Context<'_>, f: F) -> R
Expand All @@ -74,6 +78,7 @@ where
f()
}

#[doc(hidden)]
#[unstable(feature = "gen_future", issue = "50547")]
/// Retrieves the thread-local task context used by async/await futures.
///
Expand Down Expand Up @@ -105,6 +110,7 @@ where
unsafe { f(cx_ptr.as_mut()) }
}

#[doc(hidden)]
#[unstable(feature = "gen_future", issue = "50547")]
/// Polls a future in the current thread-local task waker.
pub fn poll_with_tls_context<F>(f: Pin<&mut F>) -> Poll<F::Output>
Expand Down