noir-compute 0.2.0

Network of Operators In Rust
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55

use super::super::*;
use crate::operator::{Data, DataKey, Operator};
use crate::stream::{KeyedStream, WindowedStream};

#[derive(Clone)]
struct CollectVec<I, O, F>
where
    F: Fn(Vec<I>) -> O,
{
    vec: Vec<I>,
    f: F,
    _o: PhantomData<O>,
}

impl<I, O, F> WindowAccumulator for CollectVec<I, O, F>
where
    F: Fn(Vec<I>) -> O + Send + Clone + 'static,
    I: Clone + Send + 'static,
    O: Clone + Send + 'static,
{
    type In = I;

    type Out = O;

    #[inline]
    fn process(&mut self, el: Self::In) {
        self.vec.push(el);
    }

    #[inline]
    fn output(self) -> Self::Out {
        (self.f)(self.vec)
    }
}

impl<Key, Out, WindowDescr, OperatorChain> WindowedStream<OperatorChain, Out, WindowDescr>
where
    WindowDescr: WindowDescription<Out>,
    OperatorChain: Operator<Out = (Key, Out)> + 'static,
    Key: DataKey,
    Out: Data + Ord,
{
    /// Prefer other aggregators if possible as they don't save all elements
    pub fn map<NewOut: Data, F: Fn(Vec<Out>) -> NewOut + Send + Clone + 'static>(
        self,
        f: F,
    ) -> KeyedStream<impl Operator<Out = (Key, NewOut)>> {
        let acc = CollectVec::<Out, NewOut, _> {
            vec: Default::default(),
            f,
            _o: PhantomData,
        };
        self.add_window_operator("WindowMap", acc)
    }
}