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use ahash::{AHasher, RandomState};
use std::hash::{BuildHasher, Hash, Hasher};
#[macro_use]
extern crate no_panic;
#[inline(never)]
#[no_panic]
fn hash_test_final(num: i32, string: &str) -> (u64, u64) {
use core::hash::Hasher;
let mut hasher1 = RandomState::with_seeds(1, 2, 3, 4).build_hasher();
let mut hasher2 = RandomState::with_seeds(3, 4, 5, 6).build_hasher();
hasher1.write_i32(num);
hasher2.write(string.as_bytes());
(hasher1.finish(), hasher2.finish())
}
#[inline(never)]
fn hash_test_final_wrapper(num: i32, string: &str) {
hash_test_final(num, string);
}
struct SimpleBuildHasher {
hasher: AHasher,
}
impl SimpleBuildHasher {
fn hash_one<T: Hash>(&self, x: T) -> u64
where
Self: Sized,
{
let mut hasher = self.build_hasher();
x.hash(&mut hasher);
hasher.finish()
}
}
impl BuildHasher for SimpleBuildHasher {
type Hasher = AHasher;
fn build_hasher(&self) -> Self::Hasher {
self.hasher.clone()
}
}
#[inline(never)]
#[no_panic]
fn hash_test_specialize(num: i32, string: &str) -> (u64, u64) {
let hasher1 = RandomState::with_seeds(1, 2, 3, 4).build_hasher();
let hasher2 = RandomState::with_seeds(1, 2, 3, 4).build_hasher();
(
SimpleBuildHasher { hasher: hasher1 }.hash_one(num),
SimpleBuildHasher { hasher: hasher2 }.hash_one(string.as_bytes()),
)
}
#[inline(never)]
fn hash_test_random_wrapper(num: i32, string: &str) {
hash_test_specialize(num, string);
}
#[inline(never)]
#[no_panic]
fn hash_test_random(num: i32, string: &str) -> (u64, u64) {
let build_hasher1 = RandomState::with_seeds(1, 2, 3, 4);
let build_hasher2 = RandomState::with_seeds(1, 2, 3, 4);
(build_hasher1.hash_one(&num), build_hasher2.hash_one(string.as_bytes()))
}
#[inline(never)]
fn hash_test_specialize_wrapper(num: i32, string: &str) {
hash_test_specialize(num, string);
}
#[test]
fn test_no_panic() {
hash_test_final_wrapper(2, "Foo");
hash_test_specialize_wrapper(2, "Bar");
hash_test_random(2, "Baz");
hash_test_random_wrapper(2, "Bat");
}