chore: use ready macro from futures-core (#1300)

tokio-timer/Cargo.toml

@@ -22,18 +22,18 @@ Timer facilities for Tokio
 publish = false
 
 [features]
-async-traits = ["futures-core-preview"]
+async-traits = []
 
 [dependencies]
 tokio-executor = { version = "0.2.0", path = "../tokio-executor" }
 tokio-sync = { version = "0.2.0", path = "../tokio-sync" }
+futures-core-preview = "0.3.0-alpha.17"
 
 async-util = { git = "https://github.com/tokio-rs/async" }
 crossbeam-utils = "0.6.0"
 # Backs `DelayQueue`
 slab = "0.4.1"
 # optionals
-futures-core-preview = { version = "0.3.0-alpha.17", optional = true }
 
 [dev-dependencies]
 rand = "0.7"

tokio-timer/src/delay.rs

@@ -1,4 +1,5 @@
 use crate::timer::{HandlePriv, Registration};
+use futures_core::ready;
 use std::future::Future;
 use std::pin::Pin;
 use std::task::{self, Poll};

tokio-timer/src/delay_queue.rs

@@ -9,6 +9,7 @@ use crate::timer::Handle;
 use crate::wheel::{self, Wheel};
 use crate::{Delay, Error};
 
+use futures_core::ready;
 use slab::Slab;
 use std::cmp;
 use std::future::Future;

tokio-timer/src/interval.rs

@@ -1,6 +1,7 @@
 use crate::clock;
 use crate::Delay;
 
+use futures_core::ready;
 use std::future::Future;
 use std::pin::Pin;
 use std::task::{self, Poll};

tokio-timer/src/lib.rs

@@ -32,15 +32,6 @@
 //! [`Interval`]: struct.Interval.html
 //! [`Timer`]: timer/struct.Timer.html
 
-macro_rules! ready {
-    ($e:expr) => {
-        match $e {
-            ::std::task::Poll::Ready(v) => v,
-            ::std::task::Poll::Pending => return ::std::task::Poll::Pending,
-        }
-    };
-}
-
 pub mod clock;
 pub mod delay_queue;
 #[cfg(feature = "async-traits")]

tokio-timer/src/throttle.rs

@@ -1,6 +1,7 @@
 //! Slow down a stream by enforcing a delay between items.
 
 use crate::{clock, Delay};
+use futures_core::ready;
 use futures_core::Stream;
 use std::{
     future::Future,

tokio-timer/src/timeout.rs

@@ -6,6 +6,8 @@
 
 use crate::clock::now;
 use crate::Delay;
+#[cfg(feature = "async-traits")]
+use futures_core::ready;
 use std::fmt;
 use std::future::Future;
 use std::pin::Pin;