std_lib/
fn_trait.rs

1pub trait FnOnce<Args> {
2    type Output;
3    fn call_once(self, args: Args) -> Self::Output;
4}
5
6pub trait FnMut<Args>: FnOnce<Args> {
7    fn call_mut(&mut self, args: Args) -> Self::Output;
8}
9
10pub trait Fn<Args>: FnMut<Args> {
11    fn call(&self, args: Args) -> Self::Output;
12}
13
14macro_rules! impl_for_typles {
15    [$(($($i: tt: $ty: ident)*))*]  => ($(
16        impl<Func, Ret, $($ty,)*> FnOnce<($($ty,)*)> for Func
17        where
18        Func: core::ops::FnOnce($($ty),*) -> Ret
19        {
20            type Output = Ret;
21            #[inline] fn call_once(self, _args: ($($ty,)*)) -> Self::Output {
22                self($(_args.$i),*)
23            }
24        }
25
26        impl<Func, Ret, $($ty,)*> FnMut<($($ty,)*)> for Func
27        where
28            Func: core::ops::FnMut($($ty),*) -> Ret,
29        {
30            #[inline] fn call_mut(&mut self, _args: ($($ty,)*)) -> Self::Output {
31                self($(_args.$i),*)
32            }
33        }
34
35        impl<Func, Ret, $($ty,)*> Fn<($($ty,)*)> for Func
36        where
37            Func: core::ops::Fn($($ty),*) -> Ret,
38        {
39            #[inline] fn call(&self, _args: ($($ty,)*)) -> Self::Output {
40                self($(_args.$i),*)
41            }
42        }
43    )*);
44}
45
46impl_for_typles!(
47    ()
48    (0: T0)
49    (0: T0 1: T1)
50    (0: T0 1: T1 2: T2)
51    (0: T0 1: T1 2: T2 3: T3)
52    (0: T0 1: T1 2: T2 3: T3 4: T4)
53    (0: T0 1: T1 2: T2 3: T3 4: T4 5: T5)
54    (0: T0 1: T1 2: T2 3: T3 4: T4 5: T5 6: T6)
55    (0: T0 1: T1 2: T2 3: T3 4: T4 5: T5 6: T6 7: T7)
56    (0: T0 1: T1 2: T2 3: T3 4: T4 5: T5 6: T6 7: T7 8: T8)
57    (0: T0 1: T1 2: T2 3: T3 4: T4 5: T5 6: T6 7: T7 8: T8 9: T9)
58    (0: T0 1: T1 2: T2 3: T3 4: T4 5: T5 6: T6 7: T7 8: T8 9: T9 10: T10)
59    (0: T0 1: T1 2: T2 3: T3 4: T4 5: T5 6: T6 7: T7 8: T8 9: T9 10: T10 11: T11)
60    (0: T0 1: T1 2: T2 3: T3 4: T4 5: T5 6: T6 7: T7 8: T8 9: T9 10: T10 11: T11 12: T12)
61    (0: T0 1: T1 2: T2 3: T3 4: T4 5: T5 6: T6 7: T7 8: T8 9: T9 10: T10 11: T11 12: T12 13: T13)
62    (0: T0 1: T1 2: T2 3: T3 4: T4 5: T5 6: T6 7: T7 8: T8 9: T9 10: T10 11: T11 12: T12 13: T13 14: T14)
63    (0: T0 1: T1 2: T2 3: T3 4: T4 5: T5 6: T6 7: T7 8: T8 9: T9 10: T10 11: T11 12: T12 13: T13 14: T14 15: T15)
64);
std_lib/fn_trait.rs

std_lib/
fn_trait.rs
