Struct OptionalHash 

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

Option<Hash> but more explicitly represented as [u8; HASH_SIZE].

Implementations

impl OptionalHash

pub const NONE: Self

No [Hash].

pub fn get(&self) -> Option<Hash>

Get [Hash] if this isn’t Self::NONE.

pub fn is_some(&self) -> bool

Check whether this is a [Hash].

pub fn is_none(&self) -> bool

Check whether this is Self::NONE.

pub fn unwrap(&self) -> Hash

Get [Hash] or panic.

pub fn clear(&mut self)

Set to Self::NONE.

Trait Implementations

impl ByteOrd for OptionalHash

where Self: PartialOrd + ToOutput,

fn bytes_cmp(&self, other: &Self) -> Ordering

impl Clone for OptionalHash

fn clone(&self) -> OptionalHash

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for OptionalHash

impl Debug for OptionalHash

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

Formats the value using the given formatter.

impl Default for OptionalHash

in preparation for non-all-0s None

fn default() -> Self

Returns the “default value” for a type.

impl Display for OptionalHash

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

Formats the value using the given formatter.

impl Eq for OptionalHash

impl Equivalent<Option<Hash>> for OptionalHash

fn into_equivalent(self) -> Option<Hash>

Inverse of Equivalent::from_equivalent.

fn from_equivalent(object: Option<Hash>) -> Self

Inverse of Equivalent::into_equivalent.

impl From<Hash> for OptionalHash

fn from(value: Hash) -> Self

Converts to this type from the input type.

impl From<[u8; 32]> for OptionalHash

fn from(hash: [u8; 32]) -> Self

Converts to this type from the input type.

impl Hash for OptionalHash

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 InlineOutput for OptionalHash

where [u8; 32]: InlineOutput,

fn slice_to_output(slice: &[Self], output: &mut (impl ?Sized + Output))

where Self: Sized,

Specialisation point to allow types like u8 to provide better serialisation implementation for containers like Vec<u8>.

impl ListHashes for OptionalHash

fn list_hashes(&self, visitor: &mut (impl ?Sized + FnMut(Hash)))

[Hash]-only part of Topological::traverse.

fn topology_hash(&self) -> Hash

[Hash] of all [Hash]es the object refers to other objects by.

fn point_count(&self) -> usize

How many others this object refers to.

impl MaybeHasNiche for OptionalHash

type MnArray = SomeNiche<HashNiche<UInt<UTerm, B1>>>

Should implement [MnArray]. Not constraint explicitly, because that breaks things.

impl Ord for OptionalHash

fn cmp(&self, other: &OptionalHash) -> 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.

fn clamp_to<R>(self, range: R) -> Self

where Self: Sized, R: ClampBounds<Self>,

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

Restrict a value to a certain range.

impl<__I: ParseInput> Parse<__I> for OptionalHash

where [u8; 32]: Parse<__I>,

fn parse(input: __I) -> Result<Self>

Parse consuming the whole stream.

impl<__I: ParseInput> ParseInline<__I> for OptionalHash

where [u8; 32]: ParseInline<__I>,

fn parse_inline(input: &mut __I) -> Result<Self>

Parse without consuming the whole stream. Errors on unexpected EOF.

fn parse_as_inline(input: I) -> Result<Self>

For implementing Parse::parse.

fn parse_vec(input: I) -> Result<Vec<Self>>

Parse a Vec of Self. Customisable for optimisations.

fn parse_vec_n(input: &mut I, n: usize) -> Result<Vec<Self>>

Parse a Vec of Self of length n. Customisable for optimisations.

fn parse_array<const N: usize>(input: &mut I) -> Result<[Self; N]>

Parse an array of Self. Customisable for optimisations.

fn parse_generic_array<N: ArrayLength>( input: &mut I, ) -> Result<GenericArray<Self, N>>

Parse a GenericArray of Self. Customisable for optimisations.

impl PartialEq for OptionalHash

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

Equality operator ==.

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

Inequality operator !=.

impl PartialEq<Hash> for OptionalHash

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

Equality operator ==.

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

Inequality operator !=.

impl PartialEq<OptionalHash> for Hash

fn eq(&self, hash: &OptionalHash) -> bool

Equality operator ==.

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

Inequality operator !=.

impl PartialOrd for OptionalHash

fn partial_cmp(&self, other: &OptionalHash) -> 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 Size for OptionalHash

where Self: SizeSumHelper<SizeArray: FoldAdd<Output: Unsigned>>,

const SIZE: usize = <Self as ::object_rainbow::SizeSumHelper>::SIZE_ARRAY

type Size = <<OptionalHash as SizeSumHelper>::SizeArray as FoldAdd>::Output

impl StructuralPartialEq for OptionalHash

impl Tagged for OptionalHash

const TAGS: Tags = <[u8; HASH_SIZE] as ::object_rainbow::Tagged>::TAGS

const HASH: Hash = _

impl ToOutput for OptionalHash

fn to_output(&self, output: &mut (impl ?Sized + Output))

Provide object’s byte representation to an Output.

fn hasher(&self) -> Sha256

Return a Sha256 hasher pre-filled with data of this object.

fn data_hash(&self) -> Hash

[Hash] of (real, i.e. serialized) data of this object.

fn mangle_hash(&self) -> Hash

“Mangle hash” of the object. This is used to introduce runtime distinction between data-identical objects similarly to compile-time Tagged::HASH.

fn output<T: FromOutput<Output: Default>>(&self) -> T

Construct an Output, possibly finalising it afterwards.

fn vec(&self) -> Vec<u8>

Collect this object’s data (serialize the object).

impl Topological for OptionalHash

fn traverse(&self, visitor: &mut (impl ?Sized + PointVisitor))

List what objects this one refers to.

fn topology(&self) -> TopoVec

Collect references into a dynamically-typed list.

fn byte_node(&self) -> ByteNode

where Self: ToOutput,

Useful in Resolve::resolve and FetchBytes::fetch_bytes.

fn to_resolve(&self) -> Arc<dyn Resolve>

Reconstruct a Resolve usable for Parse::parseing this object based on references.