intid_core/uint/
sealed.rs

1pub trait PrivateUnsignedInt: Sized {
2    const ZERO: Self;
3    const ONE: Self;
4    const MAX: Self;
5    fn checked_cast<U: super::UnsignedPrimInt>(self) -> Option<U>;
6    /// The type name as a short unqualified string.
7    const TYPE_NAME: &'static str;
8    fn checked_add(self, other: Self) -> Option<Self>;
9    fn checked_sub(self, other: Self) -> Option<Self>;
10    fn from_usize_checked(val: usize) -> Option<Self>;
11    fn from_usize_wrapping(val: usize) -> Self;
12    #[allow(clippy::wrong_self_convention)]
13    fn to_usize_wrapping(this: Self) -> usize;
14    #[allow(clippy::wrong_self_convention)]
15    fn to_usize_checked(this: Self) -> Option<usize>;
16}
17macro_rules! impl_primint {
18    ($($target:ident),*) => ($(
19        impl super::UnsignedPrimInt for $target {}
20        impl super::ConvertPrimInts for $target {}
21        impl PrivateUnsignedInt for $target {
22            const TYPE_NAME: &'static str = stringify!($target);
23            const ZERO: Self = {
24                assert!($target::MIN == 0, "signed integer");
25                0
26            };
27            const ONE: Self = 1;
28            const MAX: Self = $target::MAX;
29            #[inline]
30            fn checked_cast<U: super::UnsignedPrimInt>(self) -> Option<U> {
31                U::try_from(self).ok()
32            }
33            #[inline]
34            fn checked_add(self, other: Self) -> Option<Self> {
35                <$target>::checked_add(self, other)
36            }
37            #[inline]
38            fn checked_sub(self, other: Self) -> Option<Self> {
39                <$target>::checked_sub(self, other)
40            }
41            #[inline]
42            fn from_usize_checked(val: usize) -> Option<Self> {
43                <$target>::try_from(val).ok()
44            }
45            #[inline]
46            #[allow(clippy::cast_possible_truncation)] // desired functionality
47            fn from_usize_wrapping(val: usize) -> Self {
48                val as $target
49            }
50            #[inline]
51            #[allow(clippy::cast_possible_truncation)] // desired functionality
52            fn to_usize_wrapping(this: Self) -> usize {
53                this as usize
54            }
55            #[inline]
56            fn to_usize_checked(this: Self) -> Option<usize> {
57                usize::try_from(this).ok()
58            }
59        }
60    )*);
61}
62impl_primint!(u8, u16, u32, u64, u128, usize);
intid_core/uint/sealed.rs

intid_core/uint/
sealed.rs
