Enum polkadot_node_primitives::Statement

pub enum Statement {
    Seconded(CommittedCandidateReceipt),
    Valid(CandidateHash),
}

A statement, where the candidate receipt is included in the Seconded variant.

This is the committed candidate receipt instead of the bare candidate receipt. As such, it gives access to the commitments to validators who have not executed the candidate. This is necessary to allow a block-producing validator to include candidates from outside the para it is assigned to.

Variants

Seconded(CommittedCandidateReceipt)

A statement that a validator seconds a candidate.

Valid(CandidateHash)

A statement that a validator has deemed a candidate valid.

Implementations

impl Statement

pub fn candidate_hash(&self) -> CandidateHash

Get the candidate hash referenced by this statement.

If this is a Statement::Seconded, this does hash the candidate receipt, which may be expensive for large candidates.

pub fn to_compact(&self) -> CompactStatement

Transform this statement into its compact version, which references only the hash of the candidate.

pub fn supply_pvd(self, pvd: PersistedValidationData) -> StatementWithPVD

Add the PersistedValidationData to the statement, if seconded.

Trait Implementations

impl Clone for Statement

fn clone(&self) -> Statement

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for Statement

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

Formats the value using the given formatter.

impl Decode for Statement

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

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 Statement

fn size_hint(&self) -> usize

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

fn encode_to<__CodecOutputEdqy: Output + ?Sized>( &self, __codec_dest_edqy: &mut __CodecOutputEdqy )

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 EncodeAs<CompactStatement> for Statement

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

Convert Self into T, then encode T.

impl From<&Statement> for CompactStatement

fn from(stmt: &Statement) -> Self

Converts to this type from the input type.

impl PartialEq for Statement

fn eq(&self, other: &Statement) -> 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 EncodeLike for Statement

impl Eq for Statement

impl StructuralPartialEq for Statement