9ff502029d
This patch adds `core::future::IntoFuture`. However unlike earlier PRs this patch does not integrate it into the `async/.await` lowering. That integration should be done in a follow-up PR.
27 lines
784 B
Rust
27 lines
784 B
Rust
use crate::future::Future;
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/// Conversion into a `Future`.
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#[unstable(feature = "into_future", issue = "67644")]
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pub trait IntoFuture {
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/// The output that the future will produce on completion.
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#[unstable(feature = "into_future", issue = "67644")]
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type Output;
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/// Which kind of future are we turning this into?
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#[unstable(feature = "into_future", issue = "67644")]
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type Future: Future<Output = Self::Output>;
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/// Creates a future from a value.
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#[unstable(feature = "into_future", issue = "67644")]
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fn into_future(self) -> Self::Future;
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}
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#[unstable(feature = "into_future", issue = "67644")]
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impl<F: Future> IntoFuture for F {
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type Output = F::Output;
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type Future = F;
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fn into_future(self) -> Self::Future {
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self
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}
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}
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