Solidity API

IGasPriceOracle

Implementation: https://github.com/ethereum-optimism/optimism/blob/develop/packages/contracts-bedrock/src/L2/GasPriceOracle.sol Deployment on Base: https://basescan.org/address/0x420000000000000000000000000000000000000f

getL1FeeUpperBound

function getL1FeeUpperBound(uint256 _unsignedTxSize) external view returns (uint256)

BaseGasCalculator

_CALLDATA_LENGTH_PREMIUM_HALVED

uint256 _CALLDATA_LENGTH_PREMIUM_HALVED

_BASE_TX_GAS_USED

uint256 _BASE_TX_GAS_USED

GAS_PRICE_ORACLE

address GAS_PRICE_ORACLE

calldataLengthOffset

int256 calldataLengthOffset

constructor

constructor(address gasPriceOracle, int256 calldataLenOffset) public

getCalldataGas

function getCalldataGas(uint256 calldataLength) external view returns (uint256 calldataGas)

Calculate the calldata cost in gas units on a L2 with a different fee structure than mainnet

Parameters

Name	Type	Description
calldataLength	uint256	The length of the calldata in bytes

Return Values

Name	Type	Description
calldataGas	uint256	The gas of the calldata in ETH

initialGasUsed

function initialGasUsed(uint256 calldataLength) external pure returns (uint256 gasUsed)

Gets the cost of initial gas used for a transaction with a different calldata fee than mainnet

Parameters

Name	Type	Description
calldataLength	uint256	The length of the calldata in bytes

setCalldataLengthOffset

function setCalldataLengthOffset(int256 calldataLenOffset) external

Sets the calldata length offset

Parameters

Name	Type	Description
calldataLenOffset	int256	The new calldata length offset