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Re-introduce destructuring assignments

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Now that that's landed on the stable compiler.
This commit is contained in:
Robbert van der Helm 2022-03-02 02:03:57 +01:00
parent 29c1b5e5d5
commit 5b369f6ab5
1 changed files with 5 additions and 7 deletions
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12
src/wrapper/util.rs
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@ -10,16 +10,14 @@ static A: assert_no_alloc::AllocDisabler = assert_no_alloc::AllocDisabler;
/// A Rabin fingerprint based string hash for parameter ID strings.
pub fn hash_param_id(id: &str) -> u32 {
let mut overflow;
let mut overflow2;
let mut has_overflown = false;
let mut hash: u32 = 0;
for char in id.bytes() {
// No destructuring assignments on stable Rust yet, somehow that just works on nightly
// without needing to add a feature attribute
let (hash2, overflow2) = hash.overflowing_mul(31);
let (hash3, overflow3) = hash2.overflowing_add(char as u32);
hash = hash3;
has_overflown |= overflow2 || overflow3;
(hash, overflow) = hash.overflowing_mul(31);
(hash, overflow2) = hash.overflowing_add(char as u32);
has_overflown |= overflow || overflow2;
}
if has_overflown {