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author | 2020-03-26 14:54:47 +0100 | |
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committer | 2020-03-26 14:54:47 +0100 | |
commit | 138110f5967899365bb4e1409651dec43a46d123 (patch) | |
tree | bdfc34e2c43be95b060abd2a2c7f9e82ea6bcfd6 /futures | |
parent | ec1f34ccea92b049a462664703351fe7e094fb02 (diff) | |
download | iced-138110f5967899365bb4e1409651dec43a46d123.tar.gz iced-138110f5967899365bb4e1409651dec43a46d123.tar.bz2 iced-138110f5967899365bb4e1409651dec43a46d123.zip |
Simplify `iced_futures::Command` implementation
Diffstat (limited to 'futures')
-rw-r--r-- | futures/src/command.rs | 107 | ||||
-rw-r--r-- | futures/src/command/native.rs | 100 | ||||
-rw-r--r-- | futures/src/command/web.rs | 101 |
3 files changed, 99 insertions, 209 deletions
diff --git a/futures/src/command.rs b/futures/src/command.rs index 26f58fde..535ae4f7 100644 --- a/futures/src/command.rs +++ b/futures/src/command.rs @@ -1,11 +1,102 @@ -#[cfg(not(target_arch = "wasm32"))] -mod native; +use crate::BoxFuture; +use futures::future::{Future, FutureExt}; -#[cfg(not(target_arch = "wasm32"))] -pub use native::Command; +/// A collection of async operations. +/// +/// You should be able to turn a future easily into a [`Command`], either by +/// using the `From` trait or [`Command::perform`]. +/// +/// [`Command`]: struct.Command.html +pub struct Command<T> { + futures: Vec<BoxFuture<T>>, +} -#[cfg(target_arch = "wasm32")] -mod web; +impl<T> Command<T> { + /// Creates an empty [`Command`]. + /// + /// In other words, a [`Command`] that does nothing. + /// + /// [`Command`]: struct.Command.html + pub fn none() -> Self { + Self { + futures: Vec::new(), + } + } -#[cfg(target_arch = "wasm32")] -pub use web::Command; + /// Creates a [`Command`] that performs the action of the given future. + /// + /// [`Command`]: struct.Command.html + pub fn perform<A>( + future: impl Future<Output = T> + 'static + Send, + f: impl Fn(T) -> A + 'static + Send, + ) -> Command<A> { + Command { + futures: vec![Box::pin(future.map(f))], + } + } + + /// Applies a transformation to the result of a [`Command`]. + /// + /// [`Command`]: struct.Command.html + pub fn map<A>( + mut self, + f: impl Fn(T) -> A + 'static + Send + Sync, + ) -> Command<A> + where + T: 'static, + { + let f = std::sync::Arc::new(f); + + Command { + futures: self + .futures + .drain(..) + .map(|future| { + let f = f.clone(); + + Box::pin(future.map(move |result| f(result))) + as BoxFuture<A> + }) + .collect(), + } + } + + /// 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. + /// + /// [`Command`]: struct.Command.html + pub fn batch(commands: impl IntoIterator<Item = Command<T>>) -> Self { + Self { + futures: commands + .into_iter() + .flat_map(|command| command.futures) + .collect(), + } + } + + /// Converts a [`Command`] into its underlying list of futures. + /// + /// [`Command`]: struct.Command.html + pub fn futures(self) -> Vec<BoxFuture<T>> { + self.futures + } +} + +impl<T, A> From<A> for Command<T> +where + A: Future<Output = T> + 'static + Send, +{ + fn from(future: A) -> Self { + Self { + futures: vec![future.boxed()], + } + } +} + +impl<T> std::fmt::Debug for Command<T> { + fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result { + f.debug_struct("Command").finish() + } +} diff --git a/futures/src/command/native.rs b/futures/src/command/native.rs deleted file mode 100644 index 38cb4e06..00000000 --- a/futures/src/command/native.rs +++ /dev/null @@ -1,100 +0,0 @@ -use futures::future::{BoxFuture, Future, FutureExt}; - -/// A collection of async operations. -/// -/// You should be able to turn a future easily into a [`Command`], either by -/// using the `From` trait or [`Command::perform`]. -/// -/// [`Command`]: struct.Command.html -pub struct Command<T> { - futures: Vec<BoxFuture<'static, T>>, -} - -impl<T> Command<T> { - /// Creates an empty [`Command`]. - /// - /// In other words, a [`Command`] that does nothing. - /// - /// [`Command`]: struct.Command.html - pub fn none() -> Self { - Self { - futures: Vec::new(), - } - } - - /// Creates a [`Command`] that performs the action of the given future. - /// - /// [`Command`]: struct.Command.html - pub fn perform<A>( - future: impl Future<Output = T> + 'static + Send, - f: impl Fn(T) -> A + 'static + Send, - ) -> Command<A> { - Command { - futures: vec![future.map(f).boxed()], - } - } - - /// Applies a transformation to the result of a [`Command`]. - /// - /// [`Command`]: struct.Command.html - pub fn map<A>( - mut self, - f: impl Fn(T) -> A + 'static + Send + Sync, - ) -> Command<A> - where - T: 'static, - { - let f = std::sync::Arc::new(f); - - Command { - futures: self - .futures - .drain(..) - .map(|future| { - let f = f.clone(); - - future.map(move |result| f(result)).boxed() - }) - .collect(), - } - } - - /// 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. - /// - /// [`Command`]: struct.Command.html - pub fn batch(commands: impl IntoIterator<Item = Command<T>>) -> Self { - Self { - futures: commands - .into_iter() - .flat_map(|command| command.futures) - .collect(), - } - } - - /// Converts a [`Command`] into its underlying list of futures. - /// - /// [`Command`]: struct.Command.html - pub fn futures(self) -> Vec<BoxFuture<'static, T>> { - self.futures - } -} - -impl<T, A> From<A> for Command<T> -where - A: Future<Output = T> + 'static + Send, -{ - fn from(future: A) -> Self { - Self { - futures: vec![future.boxed()], - } - } -} - -impl<T> std::fmt::Debug for Command<T> { - fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result { - f.debug_struct("Command").finish() - } -} diff --git a/futures/src/command/web.rs b/futures/src/command/web.rs deleted file mode 100644 index 11b46b90..00000000 --- a/futures/src/command/web.rs +++ /dev/null @@ -1,101 +0,0 @@ -use futures::future::{Future, FutureExt}; -use std::pin::Pin; - -/// A collection of async operations. -/// -/// You should be able to turn a future easily into a [`Command`], either by -/// using the `From` trait or [`Command::perform`]. -/// -/// [`Command`]: struct.Command.html -pub struct Command<T> { - futures: Vec<Pin<Box<dyn Future<Output = T> + 'static>>>, -} - -impl<T> Command<T> { - /// Creates an empty [`Command`]. - /// - /// In other words, a [`Command`] that does nothing. - /// - /// [`Command`]: struct.Command.html - pub fn none() -> Self { - Self { - futures: Vec::new(), - } - } - - /// Creates a [`Command`] that performs the action of the given future. - /// - /// [`Command`]: struct.Command.html - pub fn perform<A>( - future: impl Future<Output = T> + 'static, - f: impl Fn(T) -> A + 'static, - ) -> Command<A> { - Command { - futures: vec![future.map(f).boxed_local()], - } - } - - /// Applies a transformation to the result of a [`Command`]. - /// - /// [`Command`]: struct.Command.html - pub fn map<A>( - mut self, - f: impl Fn(T) -> A + 'static + Send + Sync + Unpin, - ) -> Command<A> - where - T: 'static, - { - let f = std::sync::Arc::new(f); - - Command { - futures: self - .futures - .drain(..) - .map(|future| { - let f = f.clone(); - - future.map(move |result| f(result)).boxed_local() - }) - .collect(), - } - } - - /// 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. - /// - /// [`Command`]: struct.Command.html - pub fn batch(commands: impl IntoIterator<Item = Command<T>>) -> Self { - Self { - futures: commands - .into_iter() - .flat_map(|command| command.futures) - .collect(), - } - } - - /// Converts a [`Command`] into its underlying list of futures. - /// - /// [`Command`]: struct.Command.html - pub fn futures(self) -> Vec<Pin<Box<dyn Future<Output = T> + 'static>>> { - self.futures - } -} - -impl<T, A> From<A> for Command<T> -where - A: Future<Output = T> + 'static, -{ - fn from(future: A) -> Self { - Self { - futures: vec![future.boxed_local()], - } - } -} - -impl<T> std::fmt::Debug for Command<T> { - fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result { - f.debug_struct("Command").finish() - } -} |