From 1762de285b8bd96eed278c6c0bf8b13edc5d0b62 Mon Sep 17 00:00:00 2001
From: k-nasa <htilcs1115@gmail.com>
Date: Thu, 16 Jan 2020 15:40:28 +0900
Subject: [PATCH] feat: Make the future module no_std

---
 src/future/future/mod.rs |  6 +++---
 src/future/mod.rs        | 21 +++++++++++++--------
 src/lib.rs               |  2 +-
 3 files changed, 17 insertions(+), 12 deletions(-)

diff --git a/src/future/future/mod.rs b/src/future/future/mod.rs
index d610096..24f3fb5 100644
--- a/src/future/future/mod.rs
+++ b/src/future/future/mod.rs
@@ -21,8 +21,8 @@ cfg_unstable_default! {
 }
 
 extension_trait! {
-    use std::pin::Pin;
-    use std::ops::{Deref, DerefMut};
+    use core::pin::Pin;
+    use core::ops::{Deref, DerefMut};
 
     use crate::task::{Context, Poll};
 
@@ -136,7 +136,7 @@ extension_trait! {
 
         [`Future`]: ../future/trait.Future.html
     "#]
-    pub trait FutureExt: std::future::Future {
+    pub trait FutureExt: core::future::Future {
         /// Returns a Future that delays execution for a specified time.
         ///
         /// # Examples
diff --git a/src/future/mod.rs b/src/future/mod.rs
index 9936276..3d325be 100644
--- a/src/future/mod.rs
+++ b/src/future/mod.rs
@@ -46,15 +46,20 @@
 //! [`Future::race`]: trait.Future.html#method.race
 //! [`Future::try_race`]: trait.Future.html#method.try_race
 
-pub use future::Future;
-pub use pending::pending;
-pub use poll_fn::poll_fn;
-pub use ready::ready;
+cfg_no_std! {
+    pub use future::Future;
+    pub(crate) mod future;
+}
+
+cfg_std! {
+    pub use pending::pending;
+    pub use poll_fn::poll_fn;
+    pub use ready::ready;
 
-pub(crate) mod future;
-mod pending;
-mod poll_fn;
-mod ready;
+    mod pending;
+    mod poll_fn;
+    mod ready;
+}
 
 cfg_default! {
     pub use timeout::{timeout, TimeoutError};
diff --git a/src/lib.rs b/src/lib.rs
index fc0755d..6fe13e6 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -243,10 +243,10 @@ mod macros;
 
 cfg_no_std! {
     pub mod task;
+    pub mod future;
 }
 
 cfg_std! {
-    pub mod future;
     pub mod io;
     pub mod os;
     pub mod prelude;