Module gas

EVM gas calculation utilities.

Structs

• Gas
  Represents the state of gas during execution.
• MemoryGas
  Utility struct that speeds up calculation of memory expansion It contains the current memory length and its memory expansion cost.

Enums

• MemoryExtensionResult

Constants

• ACCESS_LIST_ADDRESS
• ACCESS_LIST_STORAGE_KEY
• BASE
• BLOCKHASH
• CALLVALUE
• CALL_STIPEND
• CODEDEPOSIT
• COLD_ACCOUNT_ACCESS_COST
• COLD_SLOAD_COST
• CONDITION_JUMP_GAS
• COPY
• CREATE
• DATA_LOADN_GAS
• DATA_LOAD_GAS
• EOF_CREATE_GAS
• EXP
• HIGH
• INITCODE_WORD_COST
  EIP-3860 : Limit and meter initcode
• ISTANBUL_SLOAD_GAS
  EIP-1884: Repricing for trie-size-dependent opcodes
• JUMPDEST
• KECCAK256
• KECCAK256WORD
• LOG
• LOGDATA
• LOGTOPIC
• LOW
• MEMORY
• MID
• MIN_CALLEE_GAS
• NEWACCOUNT
• REFUND_SSTORE_CLEARS
• RETF_GAS
• SELFDESTRUCT
• SSTORE_RESET
• SSTORE_SET
• TRANSACTION_NON_ZERO_DATA_FRONTIER
• TRANSACTION_NON_ZERO_DATA_INIT
• TRANSACTION_ZERO_DATA
• VERYLOW
• WARM_SSTORE_RESET
• WARM_STORAGE_READ_COST
• ZERO

Functions

• call_cost
  Calculate call gas cost for the call instruction.
• copy_cost
• copy_cost_verylow
  *COPY opcodes cost calculation.
• cost_per_word
  Calculate the cost of buffer per word.
• create2_cost
  CREATE2 opcode cost calculation.
• exp_cost
  EXP opcode cost calculation.
• extcodecopy_cost
  EXTCODECOPY opcode cost calculation.
• initcode_cost
  EIP-3860: Limit and meter initcode
• keccak256_cost
  KECCAK256 opcode cost calculation.
• log_cost
  LOG opcode cost calculation.
• memory_gas
  Memory expansion cost calculation for a given number of words.
• selfdestruct_cost
  SELFDESTRUCT opcode cost calculation.
• sload_cost
  SLOAD opcode cost calculation.
• sstore_cost
  SSTORE opcode cost calculation.
• sstore_refund
  SSTORE opcode refund calculation.
• validate_initial_tx_gas
  Initial gas that is deducted for transaction to be included. Initial gas contains initial stipend gas, gas for access list and input data.
• warm_cold_cost
  Berlin warm and cold storage access cost for account access.
• warm_cold_cost_with_delegation
  Berlin warm and cold storage access cost for account access.