Rename NeverError To UnitError

futures-util/src/compat/executor.rs

@@ -1,6 +1,6 @@
 
 use super::Compat;
-use crate::{TryFutureExt, FutureExt, future::NeverError};
+use crate::{TryFutureExt, FutureExt, future::UnitError};
 use futures::future::Executor as Executor01;
 use futures_core::task::Executor as Executor03;
 use futures_core::task as task03;
@@ -18,7 +18,7 @@ impl Executor03 for BoxedExecutor03 {
 }
 
 /// A future that can run on a futures 0.1 executor.
-pub type Executor01Future = Compat<NeverError<FutureObj<'static, ()>>, BoxedExecutor03>;
+pub type Executor01Future = Compat<UnitError<FutureObj<'static, ()>>, BoxedExecutor03>;
 
 /// Extension trait for futures 0.1 Executors.
 pub trait Executor01CompatExt: Executor01<Executor01Future> +
@@ -53,7 +53,7 @@ where Ex: Executor01<Executor01Future>,
         &mut self,
         future: FutureObj<'static, ()>,
     ) -> Result<(), task03::SpawnObjError> {
-        let future = future.never_error().compat(BoxedExecutor03(Box::new(self.clone())));
+        let future = future.unit_error().compat(BoxedExecutor03(Box::new(self.clone())));
 
         match self.executor01.execute(future) {
             Ok(()) => Ok(()),

futures-util/src/future/mod.rs

@@ -57,8 +57,8 @@ pub use self::then::Then;
 mod inspect;
 pub use self::inspect::Inspect;
 
-mod never_error;
-pub use self::never_error::NeverError;
+mod unit_error;
+pub use self::unit_error::UnitError;
 
 mod with_executor;
 pub use self::with_executor::WithExecutor;
@@ -645,11 +645,11 @@ pub trait FutureExt: Future {
         PinBox::new(self)
     }
 
-    /// Turns a `Future` into a `TryFuture` that never errors
-    fn never_error(self) -> NeverError<Self>
+    /// Turns a `Future` into a `TryFuture` with `Error = ()`.
+    fn unit_error(self) -> UnitError<Self>
         where Self: Sized
     {
-        NeverError::new(self)
+        UnitError::new(self)
     }
 
     /// Assigns the provided `Executor` to be used when spawning tasks

futures-util/src/future/never_error.rs → futures-util/src/future/unit_error.rs

@@ -3,27 +3,27 @@ use core::mem::PinMut;
 use futures_core::future::Future;
 use futures_core::task::{self, Poll};
 
-/// Future for the `never_error` combinator, turning a `Future` into a `TryFuture`.
+/// Future for the `unit_error` combinator, turning a `Future` into a `TryFuture`.
 ///
-/// This is created by the `FutureExt::never_error` method.
+/// This is created by the `FutureExt::unit_error` method.
 #[derive(Debug)]
 #[must_use = "futures do nothing unless polled"]
-pub struct NeverError<Fut> {
+pub struct UnitError<Fut> {
     future: Fut,
 }
 
-impl<Fut> NeverError<Fut> {
+impl<Fut> UnitError<Fut> {
     unsafe_pinned!(future: Fut);
 
-    /// Creates a new NeverError.
-    pub(super) fn new(future: Fut) -> NeverError<Fut> {
-        NeverError { future }
+    /// Creates a new UnitError.
+    pub(super) fn new(future: Fut) -> UnitError<Fut> {
+        UnitError { future }
     }
 }
 
-impl<Fut: Unpin> Unpin for NeverError<Fut> {}
+impl<Fut: Unpin> Unpin for UnitError<Fut> {}
 
-impl<Fut, T> Future for NeverError<Fut>
+impl<Fut, T> Future for UnitError<Fut>
     where Fut: Future<Output = T>,
 {
     type Output = Result<T, ()>;