blob: 05f62bdf4981b4ed56385ca81deeb2f8135b58d7 (
plain)
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
|
//! PHP's `random_int()` and `random_bytes()` are cryptographically secure;
//! these are not. Composer does not rely on that property, so a
//! non-cryptographic PRNG is sufficient here.
pub fn random_int<T: RandomInt>(range: impl std::ops::RangeBounds<T>) -> T {
T::random_int(range)
}
pub fn random_bytes(len: usize) -> Vec<u8> {
let mut buf = vec![0u8; len];
fastrand::fill(&mut buf);
buf
}
/// Integral types for which [`random_int`] can generate a value.
pub trait RandomInt: Sized {
fn random_int(range: impl std::ops::RangeBounds<Self>) -> Self;
}
macro_rules! impl_random_int {
($($t:ident),* $(,)?) => {
$(
impl RandomInt for $t {
fn random_int(range: impl std::ops::RangeBounds<Self>) -> Self {
fastrand::$t(range)
}
}
)*
};
}
impl_random_int!(i8, i16, i32, i64, isize, u8, u16, u32, u64, usize);
|
