Struct evm::BlockhashState

pub struct BlockhashState(_);

A struct that manages the current blockhash state for one EVM.

Methods

impl BlockhashState

fn require(&self, number: U256) -> Result<(), RequireError>

Require a blockhash to be existed. If not, requires a RequireError.

fn commit(&mut self, number: U256, hash: H256) -> Result<(), CommitError>

Commit a new blockhash. Blockhashes are immutable so the client should be able to use this for other concurrently running EVMs.

fn get(&self, number: U256) -> Result<H256, RequireError>

Get a blockhash by its number.

Trait Implementations

impl Debug for BlockhashState

fn fmt(&self, __arg_0: &mut Formatter) -> Result

Formats the value using the given formatter.

impl Clone for BlockhashState

fn clone(&self) -> BlockhashState

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Default for BlockhashState

fn default() -> BlockhashState

Returns the "default value" for a type.