def apply_create_message(self, computation: ComputationAPI, child_msg: MessageAPI) -> None:
child_computation = computation.apply_child_computation(child_msg)
if child_computation.is_error:
computation.stack_push_int(0)
else:
computation.stack_push_bytes(child_msg.storage_address)
computation.return_gas(child_computation.get_gas_remaining())
def extcodehash_eip2929(computation: ComputationAPI) -> None:
"""
Return the code hash for a given address.
EIP: https://github.com/ethereum/EIPs/blob/master/EIPS/eip-1052.md
"""
address = force_bytes_to_address(computation.stack_pop1_bytes())
state = computation.state
_consume_gas_for_account_load(computation, address, mnemonics.EXTCODEHASH)
if state.account_is_empty(address):
computation.stack_push_bytes(constants.NULL_BYTE)
else:
computation.stack_push_bytes(state.get_code_hash(address))
def apply_create_message(self, computation: ComputationAPI, child_msg: MessageAPI) -> None:
# We need to ensure that creation operates on empty storage **and**
# that if the initialization code fails that we revert the account back
# to its original state root.
snapshot = computation.state.snapshot()
computation.state.delete_storage(child_msg.storage_address)
child_computation = computation.apply_child_computation(child_msg)
if child_computation.is_error:
computation.state.revert(snapshot)
computation.stack_push_int(0)
else:
computation.state.commit(snapshot)
computation.stack_push_bytes(child_msg.storage_address)
computation.return_gas(child_computation.get_gas_remaining())
