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use std::future::Future;
/// Convert a type into a `Future`.
///
/// # Examples
///
/// ```
/// use async_std::future::{Future, IntoFuture};
/// use async_std::io;
/// use async_std::pin::Pin;
///
/// struct Client;
///
/// impl Client {
/// pub async fn send(self) -> io::Result<()> {
/// // Send a request
/// Ok(())
/// }
/// }
///
/// impl IntoFuture for Client {
/// type Output = io::Result<()>;
///
/// type Future = Pin<Box<dyn Future<Output = Self::Output>>>;
///
/// fn into_future(self) -> Self::Future {
/// Box::pin(async {
/// self.send().await
/// })
/// }
/// }
/// ```
#[cfg(feature = "unstable")]
#[cfg_attr(feature = "docs", doc(cfg(unstable)))]
pub trait IntoFuture {
/// The type of value produced on completion.
type Output;
/// Which kind of future are we turning this into?
type Future: Future<Output = Self::Output>;
/// Create a future from a value
fn into_future(self) -> Self::Future;
}
impl<T: Future> IntoFuture for T {
type Output = T::Output;
type Future = T;
fn into_future(self) -> Self::Future {
self
}
}