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
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
|
use crate::{
RangedI128, RangedI16, RangedI32, RangedI64, RangedI8, RangedIsize, RangedU128, RangedU16,
RangedU32, RangedU64, RangedU8, RangedUsize,
};
macro_rules! declare_traits {
($($trait_name:ident),* $(,)?) => {$(
pub(crate) trait $trait_name {
const ASSERT: ();
}
)*};
}
macro_rules! impl_traits_for_all {
($($ranged_ty:ident $inner_ty:ident),* $(,)?) => {$(
impl<const MIN: $inner_ty, const MAX: $inner_ty> RangeIsValid for $ranged_ty<MIN, MAX> {
const ASSERT: () = assert!(MIN <= MAX);
}
impl<
const CURRENT_MIN: $inner_ty,
const CURRENT_MAX: $inner_ty,
const NEW_MIN: $inner_ty,
const NEW_MAX: $inner_ty,
> ExpandIsValid for ($ranged_ty<CURRENT_MIN, CURRENT_MAX>, $ranged_ty<NEW_MIN, NEW_MAX>) {
const ASSERT: () = {
assert!(NEW_MIN <= CURRENT_MIN);
assert!(NEW_MAX >= CURRENT_MAX);
};
}
impl<
const CURRENT_MIN: $inner_ty,
const CURRENT_MAX: $inner_ty,
const NEW_MIN: $inner_ty,
const NEW_MAX: $inner_ty,
> NarrowIsValid for ($ranged_ty<CURRENT_MIN, CURRENT_MAX>, $ranged_ty<NEW_MIN, NEW_MAX>) {
const ASSERT: () = {
assert!(NEW_MIN >= CURRENT_MIN);
assert!(NEW_MAX <= CURRENT_MAX);
};
}
impl<
const VALUE: $inner_ty,
const MIN: $inner_ty,
const MAX: $inner_ty,
> StaticIsValid for ($ranged_ty<MIN, VALUE>, $ranged_ty<VALUE, MAX>) {
const ASSERT: () = {
assert!(VALUE >= MIN);
assert!(VALUE <= MAX);
};
}
)*};
}
macro_rules! impl_traits_for_signed {
($($ranged_ty:ident $inner_ty:ident),* $(,)?) => {$(
impl<const MIN: $inner_ty, const MAX: $inner_ty> AbsIsSafe for $ranged_ty<MIN, MAX> {
const ASSERT: () = {
assert!(MIN != <$inner_ty>::MIN);
assert!(-MIN <= MAX);
};
}
impl<const MIN: $inner_ty, const MAX: $inner_ty> NegIsSafe for $ranged_ty<MIN, MAX> {
const ASSERT: () = {
assert!(MIN != <$inner_ty>::MIN);
assert!(-MIN <= MAX);
assert!(-MAX >= MIN);
};
}
impl_traits_for_all!($ranged_ty $inner_ty);
)*};
}
macro_rules! impl_traits_for_unsigned {
($($ranged_ty:ident $inner_ty:ident),* $(,)?) => {$(
impl<const MIN: $inner_ty, const MAX: $inner_ty> AbsIsSafe for $ranged_ty<MIN, MAX> {
const ASSERT: () = ();
}
impl<const MIN: $inner_ty, const MAX: $inner_ty> NegIsSafe for $ranged_ty<MIN, MAX> {
const ASSERT: () = assert!(MAX == 0);
}
impl_traits_for_all!($ranged_ty $inner_ty);
)*};
}
declare_traits![
RangeIsValid,
AbsIsSafe,
NegIsSafe,
ExpandIsValid,
NarrowIsValid,
StaticIsValid,
];
impl_traits_for_signed! {
RangedI8 i8,
RangedI16 i16,
RangedI32 i32,
RangedI64 i64,
RangedI128 i128,
RangedIsize isize,
}
impl_traits_for_unsigned! {
RangedU8 u8,
RangedU16 u16,
RangedU32 u32,
RangedU64 u64,
RangedU128 u128,
RangedUsize usize,
}
|
