intid_core/uint/
sealed.rs

1pub trait PrivateUnsignedInt: Sized {
2    const BITS: u32;
3    const ZERO: Self;
4    const ONE: Self;
5    const MAX: Self;
6    fn checked_cast<U: super::UnsignedPrimInt>(self) -> Option<U>;
7    /// The type name as a short unqualified string.
8    const TYPE_NAME: &'static str;
9    fn checked_add(self, other: Self) -> Option<Self>;
10    fn checked_sub(self, other: Self) -> Option<Self>;
11    fn trailing_zeros(self) -> u32;
12    fn leading_zeros(self) -> u32;
13    fn count_ones(self) -> u32;
14    fn from_usize_checked(val: usize) -> Option<Self>;
15    fn from_usize_wrapping(val: usize) -> Self;
16    #[allow(clippy::wrong_self_convention)]
17    fn to_usize_wrapping(this: Self) -> usize;
18    #[allow(clippy::wrong_self_convention)]
19    fn to_usize_checked(this: Self) -> Option<usize>;
20}
21macro_rules! impl_primint {
22    ($($target:ident),*) => ($(
23        impl super::UnsignedPrimInt for $target {}
24        impl super::ConvertPrimInts for $target {}
25        #[deny(unconditional_recursion)]
26        impl PrivateUnsignedInt for $target {
27            const TYPE_NAME: &'static str = stringify!($target);
28            const ZERO: Self = {
29                assert!($target::MIN == 0, "signed integer");
30                0
31            };
32            const BITS: u32 = $target::BITS;
33            const ONE: Self = 1;
34            const MAX: Self = $target::MAX;
35            #[inline]
36            fn checked_cast<U: super::UnsignedPrimInt>(self) -> Option<U> {
37                U::try_from(self).ok()
38            }
39            #[inline]
40            fn checked_add(self, other: Self) -> Option<Self> {
41                <$target>::checked_add(self, other)
42            }
43            #[inline]
44            fn checked_sub(self, other: Self) -> Option<Self> {
45                <$target>::checked_sub(self, other)
46            }
47            #[inline]
48            fn count_ones(self) -> u32 {
49                <$target>::count_ones(self)
50            }
51            #[inline]
52            fn leading_zeros(self) -> u32 {
53                <$target>::leading_zeros(self)
54            }
55            #[inline]
56            fn trailing_zeros(self) -> u32 {
57                <$target>::trailing_zeros(self)
58            }
59            #[inline]
60            fn from_usize_checked(val: usize) -> Option<Self> {
61                <$target>::try_from(val).ok()
62            }
63            #[inline]
64            #[allow(clippy::cast_possible_truncation)] // desired functionality
65            fn from_usize_wrapping(val: usize) -> Self {
66                val as $target
67            }
68            #[inline]
69            #[allow(clippy::cast_possible_truncation)] // desired functionality
70            fn to_usize_wrapping(this: Self) -> usize {
71                this as usize
72            }
73            #[inline]
74            fn to_usize_checked(this: Self) -> Option<usize> {
75                usize::try_from(this).ok()
76            }
77        }
78    )*);
79}
80impl_primint!(u8, u16, u32, u64, u128, usize);
intid_core/uint/sealed.rs

intid_core/uint/
sealed.rs
