From 55eaeceec8520e008260c8b5630b53d6d5ecdfb6 Mon Sep 17 00:00:00 2001
From: Tanner Rogalsky <tanner@tannerrogalsky.com>
Date: Sun, 14 Nov 2021 11:03:15 -0500
Subject: Collect the platform-specific concrete future implementations into
 mods.

---
 futures/src/lib.rs | 69 +++++++++++++++++++++++++++++++++++++-----------------
 1 file changed, 47 insertions(+), 22 deletions(-)

diff --git a/futures/src/lib.rs b/futures/src/lib.rs
index 01cf5c89..ba7c558b 100644
--- a/futures/src/lib.rs
+++ b/futures/src/lib.rs
@@ -37,33 +37,58 @@ pub mod time;
 
 pub use command::Command;
 pub use executor::Executor;
+pub use platform::*;
 pub use runtime::Runtime;
 pub use subscription::Subscription;
 
-/// A boxed static future.
-///
-/// - On native platforms, it needs a `Send` requirement.
-/// - On the Web platform, it does not need a `Send` requirement.
 #[cfg(not(target_arch = "wasm32"))]
-pub type BoxFuture<T> = futures::future::BoxFuture<'static, T>;
+mod platform {
+    /// A boxed static future.
+    ///
+    /// - On native platforms, it needs a `Send` requirement.
+    /// - On the Web platform, it does not need a `Send` requirement.
+    pub type BoxFuture<T> = futures::future::BoxFuture<'static, T>;
 
-/// A boxed static future.
-///
-/// - On native platforms, it needs a `Send` requirement.
-/// - On the Web platform, it does not need a `Send` requirement.
-#[cfg(target_arch = "wasm32")]
-pub type BoxFuture<T> = futures::future::LocalBoxFuture<'static, T>;
+    /// A boxed static stream.
+    ///
+    /// - On native platforms, it needs a `Send` requirement.
+    /// - On the Web platform, it does not need a `Send` requirement.
+    pub type BoxStream<T> = futures::stream::BoxStream<'static, T>;
 
-/// A boxed static stream.
-///
-/// - On native platforms, it needs a `Send` requirement.
-/// - On the Web platform, it does not need a `Send` requirement.
-#[cfg(not(target_arch = "wasm32"))]
-pub type BoxStream<T> = futures::stream::BoxStream<'static, T>;
+    /// Boxes a stream.
+    ///
+    /// - On native platforms, it needs a `Send` requirement.
+    /// - On the Web platform, it does not need a `Send` requirement.
+    pub fn boxed_stream<T, S>(stream: S) -> BoxStream<T>
+    where
+        S: futures::Stream<Item = T> + Send + 'static,
+    {
+        futures::stream::StreamExt::boxed(stream)
+    }
+}
 
-/// A boxed static stream.
-///
-/// - On native platforms, it needs a `Send` requirement.
-/// - On the Web platform, it does not need a `Send` requirement.
 #[cfg(target_arch = "wasm32")]
-pub type BoxStream<T> = futures::stream::LocalBoxStream<'static, T>;
+mod platform {
+    /// A boxed static future.
+    ///
+    /// - On native platforms, it needs a `Send` requirement.
+    /// - On the Web platform, it does not need a `Send` requirement.
+    pub type BoxFuture<T> = futures::future::LocalBoxFuture<'static, T>;
+
+    /// A boxed static stream.
+    ///
+    /// - On native platforms, it needs a `Send` requirement.
+    /// - On the Web platform, it does not need a `Send` requirement.
+    pub type BoxStream<T> = futures::stream::LocalBoxStream<'static, T>;
+
+    /// Boxes a stream.
+    ///
+    /// - On native platforms, it needs a `Send` requirement.
+    /// - On the Web platform, it does not need a `Send` requirement.
+    pub fn boxed_stream<T, S>(stream: S) -> BoxStream<T>
+    where
+        S: futures::Stream<Item = T> + 'static,
+    {
+        futures::stream::StreamExt::boxed_local(stream)
+    }
+}
-- 
cgit 


From 24d7d4740fd163b3d3f52fb8ea41233001ab6b93 Mon Sep 17 00:00:00 2001
From: Tanner Rogalsky <tanner@tannerrogalsky.com>
Date: Sun, 14 Nov 2021 11:04:20 -0500
Subject: Use iced_futures utilities to make native work under wasm32 target.

---
 native/src/subscription.rs        | 4 ++--
 native/src/subscription/events.rs | 9 ++++-----
 2 files changed, 6 insertions(+), 7 deletions(-)

diff --git a/native/src/subscription.rs b/native/src/subscription.rs
index ff954382..2950879c 100644
--- a/native/src/subscription.rs
+++ b/native/src/subscription.rs
@@ -1,7 +1,7 @@
 //! Listen to external events in your application.
 use crate::event::{self, Event};
 use crate::Hasher;
-use iced_futures::futures::stream::BoxStream;
+use iced_futures::BoxStream;
 
 /// A request to listen to external events.
 ///
@@ -21,7 +21,7 @@ pub type Subscription<T> =
 /// A stream of runtime events.
 ///
 /// It is the input of a [`Subscription`] in the native runtime.
-pub type EventStream = BoxStream<'static, (Event, event::Status)>;
+pub type EventStream = BoxStream<(Event, event::Status)>;
 
 /// A native [`Subscription`] tracker.
 pub type Tracker =
diff --git a/native/src/subscription/events.rs b/native/src/subscription/events.rs
index f689f3af..ca143bb3 100644
--- a/native/src/subscription/events.rs
+++ b/native/src/subscription/events.rs
@@ -27,10 +27,9 @@ where
         self: Box<Self>,
         event_stream: EventStream,
     ) -> BoxStream<Self::Output> {
-        event_stream
-            .filter_map(move |(event, status)| {
-                future::ready((self.f)(event, status))
-            })
-            .boxed()
+        let stream = event_stream.filter_map(move |(event, status)| {
+            future::ready((self.f)(event, status))
+        });
+        iced_futures::boxed_stream(stream)
     }
 }
-- 
cgit