Struct GasParams 

pub struct GasParams { /* private fields */ }

Gas table for dynamic gas constants.

Implementations

impl GasParams

pub fn new(table: Arc<[u64; 256]>) -> Self

Creates a new GasParams with the given table.

pub fn override_gas(&mut self, values: impl IntoIterator<Item = (GasId, u64)>)

Overrides the gas cost for the given gas id.

It will clone underlying table and override the values.

Use to override default gas cost

use revm_interpreter::gas::params::{GasParams, GasId};
use primitives::hardfork::SpecId;

let mut gas_table = GasParams::new_spec(SpecId::default());
gas_table.override_gas([(GasId::memory_linear_cost(), 2), (GasId::memory_quadratic_reduction(), 512)].into_iter());
assert_eq!(gas_table.get(GasId::memory_linear_cost()), 2);
assert_eq!(gas_table.get(GasId::memory_quadratic_reduction()), 512);

pub fn table(&self) -> &[u64; 256]

Returns the table.

pub fn new_spec(spec: SpecId) -> Self

Creates a new GasParams for the given spec.

pub const fn get(&self, id: GasId) -> u64

Gets the gas cost for the given gas id.

pub fn exp_cost(&self, power: U256) -> u64

EXP opcode cost calculation.

pub fn selfdestruct_refund(&self) -> i64

Selfdestruct refund.

pub fn selfdestruct_cost(&self, should_charge_topup: bool, is_cold: bool) -> u64

Selfdestruct cost.

pub fn extcodecopy(&self, len: usize) -> u64

EXTCODECOPY gas cost

pub fn mcopy_cost(&self, len: usize) -> u64

MCOPY gas cost

pub fn sstore_static_gas(&self) -> u64

Static gas cost for SSTORE opcode

pub fn sstore_set_without_load_cost(&self) -> u64

SSTORE set cost

pub fn sstore_reset_without_cold_load_cost(&self) -> u64

SSTORE reset cost

pub fn sstore_clearing_slot_refund(&self) -> u64

SSTORE clearing slot refund

pub fn sstore_dynamic_gas( &self, is_istanbul: bool, vals: &SStoreResult, is_cold: bool, ) -> u64

Dynamic gas cost for SSTORE opcode.

Dynamic gas cost is gas that needs input from SSTORE operation to be calculated.

pub fn sstore_refund(&self, is_istanbul: bool, vals: &SStoreResult) -> i64

SSTORE refund calculation.

pub const fn log_cost(&self, n: u8, len: u64) -> u64

LOG opcode cost calculation.

pub fn keccak256_cost(&self, len: usize) -> u64

KECCAK256 gas cost per word

pub fn memory_cost(&self, len: usize) -> u64

Memory gas cost

pub fn initcode_cost(&self, len: usize) -> u64

Initcode word cost

pub fn create_cost(&self) -> u64

Create gas cost

pub fn create2_cost(&self, len: usize) -> u64

Create2 gas cost.

pub fn call_stipend(&self) -> u64

Call stipend.

pub fn call_stipend_reduction(&self, gas_limit: u64) -> u64

Call stipend reduction. Call stipend is reduced by 1/64 of the gas limit.

pub fn transfer_value_cost(&self) -> u64

Transfer value cost

pub fn cold_account_additional_cost(&self) -> u64

Additional cold cost. Additional cold cost is added to the gas cost if the account is cold loaded.

pub fn cold_storage_additional_cost(&self) -> u64

Cold storage additional cost.

pub fn cold_storage_cost(&self) -> u64

Cold storage cost.

pub fn new_account_cost( &self, is_spurious_dragon: bool, transfers_value: bool, ) -> u64

New account cost. New account cost is added to the gas cost if the account is empty.

pub fn new_account_cost_for_selfdestruct(&self) -> u64

New account cost for selfdestruct.

pub fn warm_storage_read_cost(&self) -> u64

Warm storage read cost. Warm storage read cost is added to the gas cost if the account is warm loaded.

pub fn copy_cost(&self, len: usize) -> u64

Copy cost

pub fn copy_per_word_cost(&self, word_num: usize) -> u64

Copy per word cost

Trait Implementations

impl Clone for GasParams

fn clone(&self) -> GasParams

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for GasParams

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

Formats the value using the given formatter.

impl Default for GasParams

fn default() -> Self

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for GasParams

fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>

where D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Hash for GasParams

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, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for GasParams

fn eq(&self, other: &GasParams) -> 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 Serialize for GasParams

Available on crate feature serde only.

fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>

where S: Serializer,

Serialize this value into the given Serde serializer.

impl Eq for GasParams

impl StructuralPartialEq for GasParams