use crate::async_iter::AsyncIterator;
use crate::pin::Pin;
use crate::task::{Context, Poll};
#[unstable(feature = "async_iter_from_iter", issue = "81798")]
#[derive(Clone, Debug)]
pub struct FromIter<I> {
iter: I,
}
#[unstable(feature = "async_iter_from_iter", issue = "81798")]
impl<I> Unpin for FromIter<I> {}
#[unstable(feature = "async_iter_from_iter", issue = "81798")]
pub fn from_iter<I: IntoIterator>(iter: I) -> FromIter<I::IntoIter> {
FromIter { iter: iter.into_iter() }
}
#[unstable(feature = "async_iter_from_iter", issue = "81798")]
impl<I: Iterator> AsyncIterator for FromIter<I> {
type Item = I::Item;
fn poll_next(mut self: Pin<&mut Self>, _cx: &mut Context<'_>) -> Poll<Option<Self::Item>> {
Poll::Ready(self.iter.next())
}
fn size_hint(&self) -> (usize, Option<usize>) {
self.iter.size_hint()
}
}