mirror of https://github.com/rust-lang/rust
25 lines
433 B
Rust
25 lines
433 B
Rust
//@ run-pass
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pub trait FakeCoroutine {
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type Yield;
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type Return;
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}
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pub trait FakeFuture {
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type Output;
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}
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pub fn future_from_coroutine<
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T: FakeCoroutine<Yield = ()>
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>(x: T) -> impl FakeFuture<Output = T::Return> {
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GenFuture(x)
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}
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struct GenFuture<T: FakeCoroutine<Yield = ()>>(#[allow(dead_code)] T);
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impl<T: FakeCoroutine<Yield = ()>> FakeFuture for GenFuture<T> {
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type Output = T::Return;
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}
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fn main() {}
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