Enum MissingOr 

pub enum MissingOr<T> {
    Materialized(T),
    Missing([u8; 32]),
}

Either a fully materialized value or a precomputed hash placeholder.

Variants

Materialized(T)

Missing([u8; 32])

Trait Implementations

impl<T> Archive for MissingOr<T>

where T: Archive, [u8; 32]: Archive,

type Archived = ArchivedMissingOr<T>

The archived representation of this type.

type Resolver = MissingOrResolver<T>

The resolver for this type. It must contain all the additional information from serializing needed to make the archived type from the normal type.

fn resolve( &self, resolver: <MissingOr<T> as Archive>::Resolver, out: Place<<MissingOr<T> as Archive>::Archived>, )

Creates the archived version of this value at the given position and writes it to the given output.

const COPY_OPTIMIZATION: CopyOptimization<Self> = _

An optimization flag that allows the bytes of this type to be copied directly to a writer instead of calling serialize.

impl<T> Clone for MissingOr<T>

where T: Clone,

fn clone(&self) -> MissingOr<T>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<T> Debug for MissingOr<T>

where T: Debug,

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

Formats the value using the given formatter.

impl<T> Decode for MissingOr<T>

where T: Decode,

fn is_ssz_fixed_len() -> bool

true iff this type is fixed-length.

fn ssz_fixed_len() -> usize

Number of bytes this type occupies in the fixed-length portion of a container encoding. Variable-length types return [BYTES_PER_LENGTH_OFFSET].

fn from_ssz_bytes(bytes: &[u8]) -> Result<MissingOr<T>, DecodeError>

Decode a full instance from bytes, rejecting trailing input.

impl<__D, T> Deserialize<MissingOr<T>, __D> for <MissingOr<T> as Archive>::Archived

where __D: Fallible + ?Sized, T: Archive, <T as Archive>::Archived: Deserialize<T, __D>, [u8; 32]: Archive, <[u8; 32] as Archive>::Archived: Deserialize<[u8; 32], __D>,

fn deserialize( &self, deserializer: &mut __D, ) -> Result<MissingOr<T>, <__D as Fallible>::Error>

Deserializes using the given deserializer

impl<T> Encode for MissingOr<T>

where T: Encode,

fn is_ssz_fixed_len() -> bool

true iff this type is fixed-length (no variable-length fields).

fn ssz_fixed_len() -> usize

Number of bytes this type occupies in the fixed-length portion of a container encoding. For variable-length types this returns [BYTES_PER_LENGTH_OFFSET] (i.e. the size of the offset slot).

fn ssz_bytes_len(&self) -> usize

Total size of self when serialized.

fn ssz_append(&self, buf: &mut Vec<u8>)

Append the encoding of self to buf.

fn is_basic_type() -> bool

true for “basic” SSZ types (uintN, bool), which pack adjacent elements into shared 32-byte chunks for merkleization. Composite types (containers, lists, structs) return false (the default).

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

Serialize into a fresh Vec<u8> allocated through the global allocator.

impl<T> HashTreeRoot for MissingOr<T>

where T: HashTreeRoot,

fn hash_tree_root<D>(&self) -> [u8; 32]

where D: Digest<OutputSize = UInt<UInt<UInt<UInt<UInt<UInt<UTerm, B1>, B0>, B0>, B0>, B0>, B0>>,

Compute the hash tree root using D as the underlying hash.

impl<T> PartialEq for MissingOr<T>

where T: PartialEq,

fn eq(&self, other: &MissingOr<T>) -> 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<__S, T> Serialize<__S> for MissingOr<T>

where __S: Fallible + ?Sized, T: Serialize<__S>, [u8; 32]: Serialize<__S>,

fn serialize( &self, serializer: &mut __S, ) -> Result<<MissingOr<T> as Archive>::Resolver, <__S as Fallible>::Error>

Writes the dependencies for the object and returns a resolver that can create the archived type.

impl<T> Eq for MissingOr<T>

where T: Eq,