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

use crate::AnyComputation;
use std::{any::Any, cell::RefCell, rc::Rc};

slotmap::new_key_type! {
    /// Unique ID assigned to a signal.
    pub struct NodeId;
}

#[derive(Clone)]
pub(crate) struct ReactiveNode {
    pub value: Rc<RefCell<dyn Any>>,
    pub state: ReactiveNodeState,
    pub node_type: ReactiveNodeType,
}

#[derive(Clone)]
pub(crate) enum ReactiveNodeType {
    Signal,
    Memo { f: Rc<dyn AnyComputation> },
    Effect { f: Rc<dyn AnyComputation> },
}

#[derive(Copy, Clone, Debug, PartialEq, Eq, Hash, PartialOrd, Ord)]
pub(crate) enum ReactiveNodeState {
    Clean,
    Check,
    Dirty,
}