amadeus_core/par_sink/
for_each.rs

1use derive_new::new;
2use educe::Educe;
3use futures::{ready, Stream};
4use pin_project::pin_project;
5use serde::{Deserialize, Serialize};
6use serde_closure::traits::FnMut;
7use std::{
8	marker::PhantomData, pin::Pin, task::{Context, Poll}
9};
10
11use super::{
12	DistributedPipe, DistributedSink, ParallelPipe, ParallelSink, PushReducer, Reducer, ReducerProcessSend, ReducerSend
13};
14use crate::{pipe::Sink, pool::ProcessSend};
15
16#[derive(new)]
17#[must_use]
18pub struct ForEach<P, F> {
19	pipe: P,
20	f: F,
21}
22
23impl<P: ParallelPipe<Item>, Item, F> ParallelSink<Item> for ForEach<P, F>
24where
25	F: FnMut<(P::Output,), Output = ()> + Clone + Send + 'static,
26{
27	type Done = ();
28	type Pipe = P;
29	type ReduceA = ForEachReducer<P::Output, F>;
30	type ReduceC = PushReducer<()>;
31
32	fn reducers(self) -> (Self::Pipe, Self::ReduceA, Self::ReduceC) {
33		(
34			self.pipe,
35			ForEachReducer(self.f, PhantomData),
36			PushReducer::new(),
37		)
38	}
39}
40impl<P: DistributedPipe<Item>, Item, F> DistributedSink<Item> for ForEach<P, F>
41where
42	F: FnMut<(P::Output,), Output = ()> + Clone + ProcessSend + 'static,
43{
44	type Done = ();
45	type Pipe = P;
46	type ReduceA = ForEachReducer<P::Output, F>;
47	type ReduceB = PushReducer<()>;
48	type ReduceC = PushReducer<()>;
49
50	fn reducers(self) -> (Self::Pipe, Self::ReduceA, Self::ReduceB, Self::ReduceC) {
51		(
52			self.pipe,
53			ForEachReducer(self.f, PhantomData),
54			PushReducer::new(),
55			PushReducer::new(),
56		)
57	}
58}
59
60#[pin_project]
61#[derive(Educe, Serialize, Deserialize)]
62#[educe(Clone(bound = "F: Clone"))]
63#[serde(
64	bound(serialize = "F: Serialize"),
65	bound(deserialize = "F: Deserialize<'de>")
66)]
67pub struct ForEachReducer<Item, F>(F, PhantomData<fn() -> Item>);
68
69impl<Item, F> Reducer<Item> for ForEachReducer<Item, F>
70where
71	F: FnMut<(Item,), Output = ()>,
72{
73	type Done = ();
74	type Async = Self;
75
76	fn into_async(self) -> Self::Async {
77		self
78	}
79}
80impl<Item, F> ReducerProcessSend<Item> for ForEachReducer<Item, F>
81where
82	F: FnMut<(Item,), Output = ()>,
83{
84	type Done = ();
85}
86impl<Item, F> ReducerSend<Item> for ForEachReducer<Item, F>
87where
88	F: FnMut<(Item,), Output = ()>,
89{
90	type Done = ();
91}
92
93impl<Item, F> Sink<Item> for ForEachReducer<Item, F>
94where
95	F: FnMut<(Item,), Output = ()>,
96{
97	type Done = ();
98
99	#[inline(always)]
100	fn poll_forward(
101		self: Pin<&mut Self>, cx: &mut Context, mut stream: Pin<&mut impl Stream<Item = Item>>,
102	) -> Poll<Self::Done> {
103		let self_ = self.project();
104		while let Some(item) = ready!(stream.as_mut().poll_next(cx)) {
105			self_.0.call_mut((item,));
106		}
107		Poll::Ready(())
108	}
109}
amadeus_core/par_sink/for_each.rs

amadeus_core/par_sink/
for_each.rs
