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
56
57
58
59
60
61
62

use std::fmt;
use std::marker::PhantomData;

use crate::codec::{Bincode, Codec};
use crate::lifecycle::WorkerLifecycleEvent;
use crate::messages::{FromWorker, ToWorker};
use crate::native_worker::{DedicatedWorker, NativeWorkerExt, WorkerSelf};
use crate::scope::WorkerScope;
use crate::traits::Worker;

/// A Worker Registrar.
pub struct WorkerRegistrar<W, CODEC = Bincode>
where
    W: Worker,
    CODEC: Codec,
{
    _marker: PhantomData<(W, CODEC)>,
}

impl<W: Worker> fmt::Debug for WorkerRegistrar<W> {
    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
        f.write_str("WorkerRegistrar<_>")
    }
}

impl<W, CODEC> WorkerRegistrar<W, CODEC>
where
    W: Worker,
    CODEC: Codec,
{
    pub(crate) fn new() -> Self {
        Self {
            _marker: PhantomData,
        }
    }

    /// Sets a new message encoding.
    pub fn encoding<C>(&self) -> WorkerRegistrar<W, C>
    where
        C: Codec,
    {
        WorkerRegistrar::new()
    }

    /// Executes an worker in the current environment.
    pub fn register(&self)
    where
        CODEC: Codec,
    {
        let scope = WorkerScope::<W>::new::<CODEC>();
        let upd = WorkerLifecycleEvent::Create(scope.clone());
        scope.send(upd);
        let handler = move |msg: ToWorker<W>| {
            let upd = WorkerLifecycleEvent::Remote(msg);
            scope.send(upd);
        };
        let loaded: FromWorker<W> = FromWorker::WorkerLoaded;
        let worker = DedicatedWorker::worker_self();
        worker.set_on_packed_message::<_, CODEC, _>(handler);
        worker.post_packed_message::<_, CODEC>(loaded);
    }
}