Struct HasherProxy 

pub struct HasherProxy<'a> { /* private fields */ }

Provides an implementation of core::hash::Hasher for a given hasher pointer and write function

See HashFn for more details on the parameters.

Example usage (for a type that already implements Hasher)

hash: Some(|value, hasher_self, hasher_write_fn| unsafe {
    value
        .as_ref::<Self>()
        .hash(&mut HasherProxy::new(hasher_self, hasher_write_fn));
}),

Implementations

impl<'a> HasherProxy<'a>

pub unsafe fn new( hasher_this: Opaque<'a>, hasher_write_fn: for<'mem> unsafe fn(Opaque<'mem>, &[u8]), ) -> HasherProxy<'a>

Create a new HasherProxy from a hasher pointer and a write function

Safety

The hasher_this parameter must be a valid pointer to a Hasher trait object. The hasher_write_fn parameter must be a valid function pointer.

Trait Implementations

impl Hasher for HasherProxy<'_>

fn finish(&self) -> u64

Returns the hash value for the values written so far.

fn write(&mut self, bytes: &[u8])

Writes some data into this Hasher.

fn write_u8(&mut self, i: u8)

Writes a single u8 into this hasher.

fn write_u16(&mut self, i: u16)

Writes a single u16 into this hasher.

fn write_u32(&mut self, i: u32)

Writes a single u32 into this hasher.

fn write_u64(&mut self, i: u64)

Writes a single u64 into this hasher.

fn write_u128(&mut self, i: u128)

Writes a single u128 into this hasher.

fn write_usize(&mut self, i: usize)

Writes a single usize into this hasher.

fn write_i8(&mut self, i: i8)

Writes a single i8 into this hasher.

fn write_i16(&mut self, i: i16)

Writes a single i16 into this hasher.

fn write_i32(&mut self, i: i32)

Writes a single i32 into this hasher.

fn write_i64(&mut self, i: i64)

Writes a single i64 into this hasher.

fn write_i128(&mut self, i: i128)

Writes a single i128 into this hasher.

fn write_isize(&mut self, i: isize)

Writes a single isize into this hasher.

fn write_length_prefix(&mut self, len: usize)

🔬This is a nightly-only experimental API. (hasher_prefixfree_extras)

Writes a length prefix into this hasher, as part of being prefix-free.

fn write_str(&mut self, s: &str)

🔬This is a nightly-only experimental API. (hasher_prefixfree_extras)

Writes a single str into this hasher.