Enum PreDigest 

pub enum PreDigest {
    Primary(PrimaryPreDigest),
    SecondaryPlain(SecondaryPlainPreDigest),
    SecondaryVRF(SecondaryVRFPreDigest),
}

A BABE pre-runtime digest. This contains all data required to validate a block and for the BABE runtime module. Slots can be assigned to a primary (VRF based) and to a secondary (slot number based).

Variants

Primary(PrimaryPreDigest)

A primary VRF-based slot assignment.

SecondaryPlain(SecondaryPlainPreDigest)

A secondary deterministic slot assignment.

SecondaryVRF(SecondaryVRFPreDigest)

A secondary deterministic slot assignment with VRF outputs.

Implementations

impl PreDigest

pub fn authority_index(&self) -> u32

Returns the slot number of the pre digest.

pub fn slot(&self) -> Slot

Returns the slot of the pre digest.

pub fn is_primary(&self) -> bool

Returns true if this pre-digest is for a primary slot assignment.

pub fn added_weight(&self) -> u32

Returns the weight added by this digest, not the cumulative weight of the chain.

pub fn vrf_signature(&self) -> Option<&VrfSignature>

Returns the VRF output and proof, if they exist.

Trait Implementations

impl Clone for PreDigest

fn clone(&self) -> PreDigest

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for PreDigest

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

Formats the value using the given formatter.

impl Decode for PreDigest

fn decode<__CodecInputEdqy>( __codec_input_edqy: &mut __CodecInputEdqy, ) -> Result<PreDigest, Error>

where __CodecInputEdqy: Input,

Attempt to deserialise the value from input.

fn decode_into<I>( input: &mut I, dst: &mut MaybeUninit<Self>, ) -> Result<DecodeFinished, Error>

where I: Input,

Attempt to deserialize the value from input into a pre-allocated piece of memory.

fn skip<I>(input: &mut I) -> Result<(), Error>

where I: Input,

Attempt to skip the encoded value from input.

fn encoded_fixed_size() -> Option<usize>

Returns the fixed encoded size of the type.

impl Encode for PreDigest

fn size_hint(&self) -> usize

If possible give a hint of expected size of the encoding.

fn encode_to<__CodecOutputEdqy>( &self, __codec_dest_edqy: &mut __CodecOutputEdqy, )

where __CodecOutputEdqy: Output + ?Sized,

Convert self to a slice and append it to the destination.

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

Convert self to an owned vector.

fn using_encoded<R, F>(&self, f: F) -> R

where F: FnOnce(&[u8]) -> R,

Convert self to a slice and then invoke the given closure with it.

fn encoded_size(&self) -> usize

Calculates the encoded size.

impl MaxEncodedLen for PreDigest

fn max_encoded_len() -> usize

Upper bound, in bytes, of the maximum encoded size of this item.

impl TypeInfo for PreDigest

type Identity = PreDigest

The type identifying for which type info is provided.

fn type_info() -> Type

Returns the static type identifier for Self.

impl EncodeLike for PreDigest