Struct ckb_types::core::BlockView

pub struct BlockView { /* fields omitted */ }

A readonly and immutable struct which includes Block and its associated hashes.

Notice

This struct is not implement the trait Default, use BlockBuilder to construct it.

Implementations

impl BlockView

pub fn as_advanced_builder(&self) -> BlockBuilder

Creates an advanced builder base on current data.

impl BlockView

pub fn data(&self) -> Block

Gets a clone of packed::Block.

pub fn hash(&self) -> Byte32

Gets a clone of hash.

pub fn uncle_hashes(&self) -> Byte32Vec

Gets a clone of uncle_hashes.

pub fn tx_hashes(&self) -> &[Byte32]

Extracts a slice of tx_hashes.

pub fn tx_witness_hashes(&self) -> &[Byte32]

Extracts a slice of tx_witness_hashes.

pub fn version(&self) -> Version

Gets header.raw.version.

pub fn number(&self) -> BlockNumber

Gets header.raw.number.

pub fn compact_target(&self) -> u32

Gets header.raw.compact_target.

pub fn timestamp(&self) -> u64

Gets header.raw.timestamp.

pub fn epoch(&self) -> EpochNumberWithFraction

Gets header.raw.epoch.

pub fn parent_hash(&self) -> Byte32

Gets header.raw.parent_hash.

pub fn transactions_root(&self) -> Byte32

Gets header.raw.transactions_root.

pub fn proposals_hash(&self) -> Byte32

Gets header.raw.proposals_hash.

pub fn extra_hash(&self) -> Byte32

Gets header.raw.extra_hash.

pub fn dao(&self) -> Byte32

Gets header.raw.dao.

pub fn nonce(&self) -> u128

Gets header.nonce.

pub fn difficulty(&self) -> U256

Gets header.difficulty.

pub fn header(&self) -> HeaderView

Gets header.

pub fn uncles(&self) -> UncleBlockVecView

Gets uncles.

pub fn extension(&self) -> Option<Bytes>

Gets extension.

Panics

Panics if the extension exists but not a valid Bytes.

pub fn as_uncle(&self) -> UncleBlockView

Converts into an uncle block.

pub fn transactions(&self) -> Vec<TransactionView>

Gets transactions.

pub fn union_proposal_ids_iter(&self) -> impl Iterator<Item = ProposalShortId>

Creates an iterator from proposals of the block and proposals of uncles.

pub fn union_proposal_ids(&self) -> HashSet<ProposalShortId>

Creates a hashset from proposals of the block and proposals of uncles.

pub fn transaction(&self, index: usize) -> Option<TransactionView>

Gets a transaction through its index.

pub fn output(&self, tx_index: usize, index: usize) -> Option<CellOutput>

Gets an output through its transaction index and its own index.

pub fn fake_hash(self, hash: Byte32) -> Self

Sets a fake header hash.

pub fn is_genesis(&self) -> bool

Checks whether the block is the genesis block.

pub fn calc_uncles_hash(&self) -> Byte32

Calculates the hash for uncle blocks.

pub fn calc_extension_hash(&self) -> Option<Byte32>

Calculates the hash for extension.

pub fn calc_extra_hash(&self) -> ExtraHashView

Calculates the extra hash.

pub fn calc_proposals_hash(&self) -> Byte32

Calculates the hash for proposals.

pub fn calc_transactions_root(&self) -> Byte32

Calculates the merkel root for transactions with witnesses.

pub fn calc_raw_transactions_root(&self) -> Byte32

Calculates the merkel root for transactions without witnesses.

pub fn calc_witnesses_root(&self) -> Byte32

Calculates the merkel root for transaction witnesses.

impl BlockView

pub fn new_unchecked(
    header: HeaderView,
    uncles: UncleBlockVecView,
    body: Vec<TransactionView>,
    proposals: ProposalShortIdVec
) -> Self

Creates a new BlockView.

Notice

BlockView created by this method could have invalid hashes or invalid merkle roots in the header.

pub fn new_unchecked_with_extension(
    header: HeaderView,
    uncles: UncleBlockVecView,
    body: Vec<TransactionView>,
    proposals: ProposalShortIdVec,
    extension: Bytes
) -> Self

Creates a new BlockView with a extension.

Notice

BlockView created by this method could have invalid hashes or invalid merkle roots in the header.

Trait Implementations

impl Clone for BlockView

fn clone(&self) -> BlockView

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for BlockView

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

Formats the value using the given formatter.

impl Display for BlockView

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

Formats the value using the given formatter.

impl Hash for BlockView

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, 

Feeds a slice of this type into the given Hasher.

impl PartialEq<BlockView> for BlockView

fn eq(&self, other: &Self) -> 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 !=.

impl Eq for BlockView