thaw_utils 0.1.2

Shared Thaw utility functions
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
77
78
79
80
81
82

#[macro_export]
macro_rules! with {
    (|$ident:ident $(,)?| $body:expr) => {
        $crate::macros::__private::Withable::call_with(&$ident, |$ident| $body)
    };
    (move |$ident:ident $(,)?| $body:expr) => {
        $crate::macros::__private::Withable::call_with(&$ident, move |$ident| $body)
    };
    (|$first:ident, $($rest:ident),+ $(,)? | $body:expr) => {
        $crate::macros::__private::Withable::call_with(
            &$first,
            |$first| with!(|$($rest),+| $body)
        )
    };
    (move |$first:ident, $($rest:ident),+ $(,)? | $body:expr) => {
        $crate::macros::__private::Withable::call_with(
            &$first,
            move |$first| with!(|$($rest),+| $body)
        )
    };
}

#[macro_export]
macro_rules! update {
    (|$ident:ident $(,)?| $body:expr) => {
        $crate::macros::__private::Updatable::call_update(&$ident, |$ident| $body)
    };
    (move |$ident:ident $(,)?| $body:expr) => {
        $crate::macros::__private::Updatable::call_update(&$ident, move |$ident| $body)
    };
    (|$first:ident, $($rest:ident),+ $(,)? | $body:expr) => {
        $crate::macros::__private::Updatable::call_update(
            &$first,
            |$first| update!(|$($rest),+| $body)
        )
    };
    (move |$first:ident, $($rest:ident),+ $(,)? | $body:expr) => {
        $crate::macros::__private::Updatable::call_update(
            &$first,
            move |$first| update!(|$($rest),+| $body)
        )
    };
}

pub mod __private {
    use leptos::prelude::{Update, With};

    pub trait Withable {
        type Value;

        #[track_caller]
        fn call_with<O>(item: &Self, f: impl FnOnce(&Self::Value) -> O) -> O;
    }

    impl<S: With> Withable for S
    where
        <S as With>::Value: Sized,
    {
        type Value = S::Value;

        #[inline(always)]
        fn call_with<O>(item: &Self, f: impl FnOnce(&Self::Value) -> O) -> O {
            item.with(f)
        }
    }

    pub trait Updatable {
        type Value;

        #[track_caller]
        fn call_update(item: &Self, f: impl FnOnce(&mut Self::Value));
    }

    impl<S: Update> Updatable for S {
        type Value = S::Value;

        #[inline(always)]
        fn call_update(item: &Self, f: impl FnOnce(&mut Self::Value)) {
            item.update(f)
        }
    }
}