mirror of https://github.com/rust-lang/rust
36 lines
944 B
Rust
36 lines
944 B
Rust
//@ check-pass
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//@ edition:2018
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use std::pin::Pin;
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use std::task::{Context, Poll};
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struct Foo;
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impl Foo {
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async fn pin_ref(self: Pin<&Self>) -> Pin<&Self> { self }
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async fn pin_mut(self: Pin<&mut Self>) -> Pin<&mut Self> { self }
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async fn pin_pin_pin_ref(self: Pin<Pin<Pin<&Self>>>) -> Pin<Pin<Pin<&Self>>> { self }
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async fn pin_ref_impl_trait(self: Pin<&Self>) -> impl Clone + '_ { self }
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fn b(self: Pin<&Foo>, f: &Foo) -> Pin<&Foo> { self }
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}
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type Alias<T> = Pin<T>;
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impl Foo {
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async fn bar<'a>(self: Alias<&Self>, arg: &'a ()) -> Alias<&Self> { self }
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}
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// FIXME(Centril): extend with the rest of the non-`async fn` test
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// when we allow `async fn`s inside traits and trait implementations.
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fn main() {
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let mut foo = Foo;
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{ Pin::new(&foo).pin_ref() };
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{ Pin::new(&mut foo).pin_mut() };
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{ Pin::new(Pin::new(Pin::new(&foo))).pin_pin_pin_ref() };
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{ Pin::new(&foo).pin_ref_impl_trait() };
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}
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