add IntoFuture

Signed-off-by: Yoshua Wuyts <yoshuawuyts@gmail.com>

Author: yoshuawuyts

src/future/into_future.rs

@@ -0,0 +1,13 @@
+use crate::future::Future;
+
+/// Convert a type into a `Future`.
+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;
+}

src/future/mod.rs

@@ -53,7 +53,9 @@ use cfg_if::cfg_if;
 pub use pending::pending;
 pub use poll_fn::poll_fn;
 pub use ready::ready;
+pub use into_future::IntoFuture;
 
+mod into_future;
 mod pending;
 mod poll_fn;
 mod ready;