From a25b1af45690bdd8e1cbb20ee3a5b1c4342de455 Mon Sep 17 00:00:00 2001
From: Héctor Ramón Jiménez <hector@hecrj.dev>
Date: Fri, 14 Jun 2024 01:47:39 +0200
Subject: Replace `Command` with a new `Task` API with chain support

---
 runtime/src/command.rs | 147 -------------------------------------------------
 1 file changed, 147 deletions(-)
 delete mode 100644 runtime/src/command.rs

(limited to 'runtime/src/command.rs')

diff --git a/runtime/src/command.rs b/runtime/src/command.rs
deleted file mode 100644
index f7a746fe..00000000
--- a/runtime/src/command.rs
+++ /dev/null
@@ -1,147 +0,0 @@
-//! Run asynchronous actions.
-mod action;
-
-pub use action::Action;
-
-use crate::core::widget;
-use crate::futures::futures;
-use crate::futures::MaybeSend;
-
-use futures::channel::mpsc;
-use futures::Stream;
-use std::fmt;
-use std::future::Future;
-
-/// A set of asynchronous actions to be performed by some runtime.
-#[must_use = "`Command` must be returned to runtime to take effect"]
-pub struct Command<T>(Internal<Action<T>>);
-
-#[derive(Debug)]
-enum Internal<T> {
-    None,
-    Single(T),
-    Batch(Vec<T>),
-}
-
-impl<T> Command<T> {
-    /// Creates an empty [`Command`].
-    ///
-    /// In other words, a [`Command`] that does nothing.
-    pub const fn none() -> Self {
-        Self(Internal::None)
-    }
-
-    /// Creates a [`Command`] that performs a single [`Action`].
-    pub const fn single(action: Action<T>) -> Self {
-        Self(Internal::Single(action))
-    }
-
-    /// Creates a [`Command`] that performs a [`widget::Operation`].
-    pub fn widget(operation: impl widget::Operation<T> + 'static) -> Self {
-        Self::single(Action::Widget(Box::new(operation)))
-    }
-
-    /// Creates a [`Command`] that performs the action of the given future.
-    pub fn perform<A>(
-        future: impl Future<Output = A> + 'static + MaybeSend,
-        f: impl FnOnce(A) -> T + 'static + MaybeSend,
-    ) -> Command<T> {
-        use futures::FutureExt;
-
-        Command::single(Action::Future(Box::pin(future.map(f))))
-    }
-
-    /// Creates a [`Command`] that runs the given stream to completion.
-    pub fn run<A>(
-        stream: impl Stream<Item = A> + 'static + MaybeSend,
-        f: impl Fn(A) -> T + 'static + MaybeSend,
-    ) -> Command<T> {
-        use futures::StreamExt;
-
-        Command::single(Action::Stream(Box::pin(stream.map(f))))
-    }
-
-    /// Creates a [`Command`] that performs the actions of all the given
-    /// commands.
-    ///
-    /// Once this command is run, all the commands will be executed at once.
-    pub fn batch(commands: impl IntoIterator<Item = Command<T>>) -> Self {
-        let mut batch = Vec::new();
-
-        for Command(command) in commands {
-            match command {
-                Internal::None => {}
-                Internal::Single(command) => batch.push(command),
-                Internal::Batch(commands) => batch.extend(commands),
-            }
-        }
-
-        Self(Internal::Batch(batch))
-    }
-
-    /// Applies a transformation to the result of a [`Command`].
-    pub fn map<A>(
-        self,
-        f: impl Fn(T) -> A + 'static + MaybeSend + Sync + Clone,
-    ) -> Command<A>
-    where
-        T: 'static,
-        A: 'static,
-    {
-        match self.0 {
-            Internal::None => Command::none(),
-            Internal::Single(action) => Command::single(action.map(f)),
-            Internal::Batch(batch) => Command(Internal::Batch(
-                batch
-                    .into_iter()
-                    .map(|action| action.map(f.clone()))
-                    .collect(),
-            )),
-        }
-    }
-
-    /// Returns all of the actions of the [`Command`].
-    pub fn actions(self) -> Vec<Action<T>> {
-        let Command(command) = self;
-
-        match command {
-            Internal::None => Vec::new(),
-            Internal::Single(action) => vec![action],
-            Internal::Batch(batch) => batch,
-        }
-    }
-}
-
-impl<Message> From<()> for Command<Message> {
-    fn from(_value: ()) -> Self {
-        Self::none()
-    }
-}
-
-impl<T> fmt::Debug for Command<T> {
-    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
-        let Command(command) = self;
-
-        command.fmt(f)
-    }
-}
-
-/// Creates a [`Command`] that produces the `Message`s published from a [`Future`]
-/// to an [`mpsc::Sender`] with the given bounds.
-pub fn channel<Fut, Message>(
-    size: usize,
-    f: impl FnOnce(mpsc::Sender<Message>) -> Fut + MaybeSend + 'static,
-) -> Command<Message>
-where
-    Fut: Future<Output = ()> + MaybeSend + 'static,
-    Message: 'static + MaybeSend,
-{
-    use futures::future;
-    use futures::stream::{self, StreamExt};
-
-    let (sender, receiver) = mpsc::channel(size);
-
-    let runner = stream::once(f(sender)).filter_map(|_| future::ready(None));
-
-    Command::single(Action::Stream(Box::pin(stream::select(receiver, runner))))
-}
-- 
cgit