Struct GasCounter 

pub struct GasCounter { /* private fields */ }

Mutable gas counter with structured charge / check semantics.

Implementations

impl GasCounter

pub fn new(initial: Gas) -> Self

Construct with the given initial budget.

pub fn remaining(&self) -> Gas

Current remaining gas.

pub fn charge(&mut self, cost: Gas) -> Result<(), OutOfGas>

Try to deduct cost. Returns Ok(()) on success or Err(OutOfGas) if the counter would go negative (caller should produce ExitReason::OutOfGas).

pub fn set(&mut self, value: Gas)

Set remaining gas explicitly (used by the higher layer’s SetGasMeter operation for top-ups).

Trait Implementations

impl Clone for GasCounter

fn clone(&self) -> GasCounter

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for GasCounter

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

Formats the value using the given formatter.

impl PartialEq for GasCounter

fn eq(&self, other: &GasCounter) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Eq for GasCounter

impl StructuralPartialEq for GasCounter