sigmut 0.0.2

a state management framework designed to be used as a foundation for UI frameworks.
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
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76

use std::cell::Ref;

use crate::{SignalContext, StateRef};

/// A builder for creating a [`StateRef`].
pub struct StateRefBuilder<'a, 'b, 's, T: ?Sized> {
    r: StateRef<'a, T>,
    sc: &'b mut SignalContext<'s>,
}

impl<'a, 'b, 's: 'a, T: ?Sized> StateRefBuilder<'a, 'b, 's, T> {
    pub fn new(r: StateRef<'a, T>, sc: &'b mut SignalContext<'s>) -> Self {
        StateRefBuilder { r, sc }
    }

    pub fn from_value(value: T, sc: &'b mut SignalContext<'s>) -> StateRefBuilder<'a, 'b, 's, T>
    where
        T: Sized + 'static,
    {
        StateRefBuilder {
            r: StateRef::from_value(value, sc),
            sc,
        }
    }
    pub fn from_value_non_static(
        value: T,
        sc: &'b mut SignalContext<'s>,
    ) -> StateRefBuilder<'a, 'b, 's, T>
    where
        T: Sized,
    {
        StateRefBuilder {
            r: StateRef::from_value_non_static(value, sc),
            sc,
        }
    }
    pub fn from_ref(value: &'a T, sc: &'b mut SignalContext<'s>) -> StateRefBuilder<'a, 'b, 's, T> {
        StateRefBuilder {
            r: StateRef::from(value),
            sc,
        }
    }
    pub fn from_ref_cell(
        value: Ref<'a, T>,
        sc: &'b mut SignalContext<'s>,
    ) -> StateRefBuilder<'a, 'b, 's, T> {
        StateRefBuilder {
            r: StateRef::from(value),
            sc,
        }
    }

    pub fn map<U: ?Sized>(
        self,
        f: impl for<'a0> FnOnce(&'a0 T) -> &'a0 U,
    ) -> StateRefBuilder<'a, 'b, 's, U> {
        StateRefBuilder {
            r: StateRef::map(self.r, f, self.sc),
            sc: self.sc,
        }
    }

    pub fn map_ref<U: ?Sized>(
        self,
        f: impl for<'a0, 's0> FnOnce(&'a0 T, &mut SignalContext<'s0>, &'a0 &'s0 ()) -> StateRef<'a0, U>,
    ) -> StateRefBuilder<'a, 'b, 's, U> {
        StateRefBuilder {
            r: StateRef::map_ref(self.r, f, self.sc),
            sc: self.sc,
        }
    }

    pub fn build(self) -> StateRef<'a, T> {
        self.r
    }
}