30 lines
766 B
Rust
30 lines
766 B
Rust
//@ run-pass
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//@ edition: 2024
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//@ compile-flags: -Zunstable-options
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#![feature(async_iterator, async_iter_from_iter, async_for_loop, noop_waker,
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gen_blocks)]
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async gen fn async_iter() -> i32 {
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let iter = core::async_iter::from_iter(0..3);
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for await i in iter {
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yield i + 1;
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}
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}
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// make sure a simple for await loop works
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async fn real_main() {
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let mut count = 1;
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for await i in async_iter() {
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assert_eq!(i, count);
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count += 1;
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}
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assert_eq!(count, 4);
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}
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fn main() {
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let future = real_main();
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let mut cx = &mut core::task::Context::from_waker(std::task::Waker::noop());
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let mut future = core::pin::pin!(future);
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while let core::task::Poll::Pending = future.as_mut().poll(&mut cx) {}
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}
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