Struct ethcore_builtin::Builtin

pub struct Builtin { /* private fields */ }

Pricing scheme, execution definition, and activation block for a built-in contract.

Call cost to compute cost for the given input, execute to execute the contract on the given input, and is_active to determine whether the contract is active.

Implementations

impl Builtin

pub fn cost(&self, input: &[u8], at: u64) -> U256

Simple forwarder for cost.

Return the cost of the most recently activated pricer at the current block number.

If no pricer is actived zero is returned

If multiple activation_at has the same block number the last one is used (follows BTreeMap semantics).

pub fn execute(
    &self,
    input: &[u8],
    output: &mut BytesRef<'_>
) -> Result<(), &'static str>

Simple forwarder for execute.

pub fn is_active(&self, at: u64) -> bool

Whether the builtin is activated at the given block number.

Trait Implementations

impl TryFrom<Builtin> for Builtin

type Error = String

The type returned in the event of a conversion error.

fn try_from(b: Builtin) -> Result<Self, Self::Error>

Performs the conversion.