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

tokio-tcp/src/incoming.rs

@@ -1,5 +1,6 @@
 use super::TcpListener;
 use super::TcpStream;
+use futures_core::ready;
 use futures_core::stream::Stream;
 use std::io;
 use std::pin::Pin;

tokio-tcp/src/lib.rs

@@ -23,15 +23,6 @@
 //! [incoming_method]: struct.TcpListener.html#method.incoming
 //! [`Incoming`]: struct.Incoming.html
 
-macro_rules! ready {
-    ($e:expr) => {
-        match $e {
-            ::std::task::Poll::Ready(t) => t,
-            ::std::task::Poll::Pending => return ::std::task::Poll::Pending,
-        }
-    };
-}
-
 #[cfg(feature = "incoming")]
 mod incoming;
 mod listener;

tokio-tcp/src/listener.rs

@@ -1,6 +1,7 @@
 #[cfg(feature = "incoming")]
 use super::incoming::Incoming;
 use super::TcpStream;
+use futures_core::ready;
 use mio;
 use std::convert::TryFrom;
 use std::fmt;

tokio-tcp/src/stream.rs

@@ -1,5 +1,6 @@
 use crate::split::{split, TcpStreamReadHalf, TcpStreamWriteHalf};
 use bytes::{Buf, BufMut};
+use futures_core::ready;
 use iovec::IoVec;
 use mio;
 use std::convert::TryFrom;