Struct starlark_map::StarlarkHashValue

pub struct StarlarkHashValue(/* private fields */);

A hash value.

Implementations

impl StarlarkHashValue

pub fn new<K: Hash + ?Sized>(key: &K) -> Self

Create a new StarlarkHashValue using the Hash trait for given key.

pub const fn new_unchecked(hash: u32) -> Self

Directly create a new StarlarkHashValue using a hash. The expectation is that the key will be well-swizzled, or there may be many hash collisions.

pub const fn hash_64(h: u64) -> Self

Hash 64-bit integer.

Input can also be a non-well swizzled hash to create better hash.

pub const fn get(self) -> u32

Get the integer hash value.

pub fn promote(self) -> u64

Make u64 hash from this hash.

The resulting hash should be good enough to be used in hashbrown hashtable.

Trait Implementations

impl Allocative for StarlarkHashValue

fn visit<'allocative_a, 'allocative_b: 'allocative_a>( &self, visitor: &'allocative_a mut Visitor<'allocative_b> )

impl Clone for StarlarkHashValue

fn clone(&self) -> StarlarkHashValue

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for StarlarkHashValue

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Dupe for StarlarkHashValue

fn dupe(&self) -> Self

impl Hash for StarlarkHashValue

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for StarlarkHashValue

fn eq(&self, other: &StarlarkHashValue) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Copy for StarlarkHashValue

impl Eq for StarlarkHashValue

impl StructuralPartialEq for StarlarkHashValue