Struct BeaconChainHeader

#[non_exhaustive]
pub struct BeaconChainHeader<'a> { /* private fields */ }

Block header that corresponds to the beacon chain

Implementations

impl<'a> BeaconChainHeader<'a>

pub fn try_from_bytes(bytes: &'a [u8]) -> Option<(Self, &'a [u8])>

Try to create a new instance from provided bytes.

bytes should be 8-bytes aligned.

Returns an instance and remaining bytes on success, None if too few bytes were given, bytes are not properly aligned or input is otherwise invalid.

pub fn is_internally_consistent(&self) -> bool

Check block header’s internal consistency.

This is usually not necessary to be called explicitly since internal consistency is checked by Self::try_from_bytes() internally.

pub fn try_from_bytes_unchecked(bytes: &'a [u8]) -> Option<(Self, &'a [u8])>

The same as Self::try_from_bytes(), but for trusted input that skips some consistency checks

pub fn to_owned(self) -> OwnedBeaconChainHeader

Create an owned version of this header

pub fn shared(&self) -> &SharedBlockHeader<'a>

Shared block header

pub fn child_shard_blocks(&self) -> &BlockHeaderChildShardBlocks<'a>

Information about child shard blocks

pub fn consensus_parameters(&self) -> &BlockHeaderConsensusParameters<'a>

Consensus parameters (on the beacon chain)

pub fn pre_seal_hash(&self) -> Blake3Hash

Hash of the block before seal is applied to it

pub fn is_sealed_correctly(&self) -> bool

Verify seal against BeaconChainHeader::pre_seal_hash() and check that its public key hash corresponds to the solution

pub fn root(&self) -> impl Deref<Target = BlockRoot>

Compute block root out of this header.

Block root is a Merkle Tree Root. The leaves are derived from individual fields in SharedBlockHeader and other fields of this enum in the declaration order.

Note that this method computes root by doing a bunch of hashing. The result is then cached if alloc feature is enabled or when compiled for OS target that is not none.

Trait Implementations

impl<'a> Clone for BeaconChainHeader<'a>

fn clone(&self) -> BeaconChainHeader<'a>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<'a> Debug for BeaconChainHeader<'a>

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

Formats the value using the given formatter.

impl<'a> Deref for BeaconChainHeader<'a>

type Target = SharedBlockHeader<'a>

The resulting type after dereferencing.

fn deref(&self) -> &Self::Target

Dereferences the value.

impl<'a> From<BeaconChainHeader<'a>> for BlockHeader<'a>

fn from(value: BeaconChainHeader<'a>) -> Self

Converts to this type from the input type.

impl<'a> GenericBlockHeader<'a> for BeaconChainHeader<'a>

const SHARD_KIND: ShardKind = ShardKind::BeaconChain

Shard kind

type Owned = OwnedBeaconChainHeader

Owned block header

fn to_owned(self) -> Self::Owned

Turn into owned version

fn root(&self) -> impl Deref<Target = BlockRoot>

Compute block root out of this header.

impl<'a> Yokeable<'a> for BeaconChainHeader<'static>

type Output = BeaconChainHeader<'a>

This type MUST be Self with the 'static replaced with 'a, i.e. Self<'a>

fn transform(&'a self) -> &'a Self::Output

This method must cast self between &'a Self<'static> and &'a Self<'a>.

fn transform_owned(self) -> Self::Output

This method must cast self between Self<'static> and Self<'a>.

unsafe fn make(this: Self::Output) -> Self

This method can be used to cast away Self<'a>’s lifetime.

fn transform_mut<F>(&'a mut self, f: F)

where F: 'static + for<'b> FnOnce(&'b mut Self::Output),

This method must cast self between &'a mut Self<'static> and &'a mut Self<'a>, and pass it to f.