Struct Hash

#[repr(transparent)]
pub struct Hash(/* private fields */);

The primitive hash that among other things is used to reference items, types, and native functions.

Implementations

impl Hash

pub const EMPTY: Self

The empty hash.

pub fn as_non_empty(&self) -> Option<Self>

Return the current hash if it is non-empty.

pub fn index(index: usize) -> Self

Construct a hash from an index.

pub fn ident(name: &str) -> Hash

Get the hash corresponding to a string identifier like function or hello_world.

pub fn type_hash(path: impl ToTypeHash) -> Self

Get the hash of a type.

pub fn associated_function( type_hash: impl IntoHash, name: impl IntoHash, ) -> Self

Construct a hash to an instance function, where the instance is a pre-determined type.

pub fn field_function( protocol: impl IntoHash, type_hash: Hash, name: impl IntoHash, ) -> Self

Construct a hash corresponding to a field function.

pub fn index_function( protocol: impl IntoHash, type_hash: Hash, index: Hash, ) -> Self

Construct an index function.

pub fn static_bytes(bytes: &[u8]) -> Hash

Get the hash corresponding to a static byte array.

pub fn object_keys<I>(keys: I) -> Self

where I: IntoIterator, I::Item: AsRef<str>,

Hash the given iterator of object keys.

pub const fn with_generics(self, generics: Self) -> Self

Mix in generics hash.

The generics hash must be a combination of the output from with_type_parameters and with_function_parameters.

pub const fn with_type_parameters(self, ty: Self) -> Self

Mix the current hash with type parameters.

pub const fn with_function_parameters(self, f: Self) -> Self

Mix the current hash with function parameters.

pub const fn parameters<const N: usize>(params: [Hash; N]) -> Self

Hash type parameters.

Trait Implementations

impl Clone for Hash

fn clone(&self) -> Hash

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for Hash

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

Formats the value using the given formatter.

impl<'__de, __A> Decode<'__de, Binary, __A> for Hash

where __A: Allocator,

const IS_BITWISE_DECODE: bool = false

Whether the type is packed. Packed types can be bitwise copied if the representation of the serialization format is identical to the memory layout of the type.

fn decode<T0>(_1: T0) -> Result<Self, <T0 as Decoder<'__de>>::Error>

where T0: Decoder<'__de, Mode = Binary, Allocator = __A>,

Decode the current value.

impl<'__de, __A> Decode<'__de, Text, __A> for Hash

where __A: Allocator,

const IS_BITWISE_DECODE: bool = false

Whether the type is packed. Packed types can be bitwise copied if the representation of the serialization format is identical to the memory layout of the type.

fn decode<T0>(_1: T0) -> Result<Self, <T0 as Decoder<'__de>>::Error>

where T0: Decoder<'__de, Mode = Text, Allocator = __A>,

Decode the current value.

impl Default for Hash

fn default() -> Hash

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for Hash

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Display for Hash

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

Formats the value using the given formatter.

impl Encode<Binary> for Hash

const IS_BITWISE_ENCODE: bool = false

Whether the type is packed. Packed types can be bitwise copied if the representation of the serialization format is identical to the memory layout of the type.

type Encode = Hash

The underlying type being encoded.

fn encode<T0>(&self, _0: T0) -> Result<(), <T0 as Encoder>::Error>

where T0: Encoder<Mode = Binary>,

Encode the given output.

fn size_hint(&self) -> Option<usize>

The number of fields in the type.

fn as_encode(&self) -> &Self::Encode

Coerce into the underlying value being encoded.

impl Encode<Text> for Hash

const IS_BITWISE_ENCODE: bool = false

Whether the type is packed. Packed types can be bitwise copied if the representation of the serialization format is identical to the memory layout of the type.

type Encode = Hash

The underlying type being encoded.

fn encode<T0>(&self, _0: T0) -> Result<(), <T0 as Encoder>::Error>

where T0: Encoder<Mode = Text>,

Encode the given output.

fn size_hint(&self) -> Option<usize>

The number of fields in the type.

fn as_encode(&self) -> &Self::Encode

Coerce into the underlying value being encoded.

impl Hash for Hash

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 IntoHash for Hash

fn into_hash(self) -> Hash

Convert current type into a hash.

impl Ord for Hash

fn cmp(&self, other: &Hash) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl PartialEq for Hash

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

Tests for self and other values to be equal, and is used by ==.

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

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

impl PartialOrd for Hash

fn partial_cmp(&self, other: &Hash) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

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

Tests less than (for self and other) and is used by the < operator.

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

Tests less than or equal to (for self and other) and is used by the <= operator.

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

Tests greater than (for self and other) and is used by the > operator.

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

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl Serialize for Hash

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl TryClone for Hash

fn try_clone(&self) -> Result<Self>

Try to clone the current value, raising an allocation error if it’s unsuccessful.

fn try_clone_from(&mut self, source: &Self) -> Result<(), Error>

Performs copy-assignment from source.

impl Copy for Hash

impl Eq for Hash

impl StructuralPartialEq for Hash

impl ToTypeHash for Hash