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pub mod sixty_four {
    use crate::XxHash64;
    use core::hash::BuildHasher;
    use rand::{self, Rng};

    #[derive(Clone)]
    /// Constructs a randomized seed and reuses it for multiple hasher instances.
    pub struct RandomXxHashBuilder64(u64);

    impl RandomXxHashBuilder64 {
        fn new() -> RandomXxHashBuilder64 {
            RandomXxHashBuilder64(rand::thread_rng().gen())
        }
    }

    impl Default for RandomXxHashBuilder64 {
        fn default() -> RandomXxHashBuilder64 {
            RandomXxHashBuilder64::new()
        }
    }

    impl BuildHasher for RandomXxHashBuilder64 {
        type Hasher = XxHash64;

        fn build_hasher(&self) -> XxHash64 {
            XxHash64::with_seed(self.0)
        }
    }
}

pub mod thirty_two {
    use crate::XxHash32;
    use core::hash::BuildHasher;
    use rand::{self, Rng};

    #[derive(Clone)]
    /// Constructs a randomized seed and reuses it for multiple hasher instances. See the usage warning on `XxHash32`.
    pub struct RandomXxHashBuilder32(u32);

    impl RandomXxHashBuilder32 {
        fn new() -> RandomXxHashBuilder32 {
            RandomXxHashBuilder32(rand::thread_rng().gen())
        }
    }

    impl Default for RandomXxHashBuilder32 {
        fn default() -> RandomXxHashBuilder32 {
            RandomXxHashBuilder32::new()
        }
    }

    impl BuildHasher for RandomXxHashBuilder32 {
        type Hasher = XxHash32;

        fn build_hasher(&self) -> XxHash32 {
            XxHash32::with_seed(self.0)
        }
    }
}