def get_call_params(self, computation: ComputationAPI) -> CallParams: gas = computation.stack_pop1_int() code_address = force_bytes_to_address(computation.stack_pop1_bytes()) ( memory_input_start_position, memory_input_size, memory_output_start_position, memory_output_size, ) = computation.stack_pop_ints(4) to = computation.msg.storage_address sender = computation.msg.sender value = computation.msg.value return ( gas, value, to, sender, code_address, memory_input_start_position, memory_input_size, memory_output_start_position, memory_output_size, False, # should_transfer_value, computation.msg.is_static, )
def get_call_params(self, computation: ComputationAPI) -> CallParams: gas = computation.stack_pop1_int() to = force_bytes_to_address(computation.stack_pop1_bytes()) ( value, memory_input_start_position, memory_input_size, memory_output_start_position, memory_output_size, ) = computation.stack_pop_ints(5) return ( gas, value, to, None, # sender None, # code_address memory_input_start_position, memory_input_size, memory_output_start_position, memory_output_size, True, # should_transfer_value, computation.msg.is_static, )
def selfdestruct_eip150(computation: ComputationAPI) -> None: beneficiary = force_bytes_to_address(computation.stack_pop1_bytes()) if not computation.state.account_exists(beneficiary): computation.consume_gas( constants.GAS_SELFDESTRUCT_NEWACCOUNT, reason=mnemonics.SELFDESTRUCT, ) _selfdestruct(computation, beneficiary)
def mstore(computation: ComputationAPI) -> None: start_position = computation.stack_pop1_int() value = computation.stack_pop1_bytes() padded_value = value.rjust(32, b'\x00') normalized_value = padded_value[-32:] computation.extend_memory(start_position, 32) computation.memory_write(start_position, 32, normalized_value)
def selfdestruct_eip161(computation: ComputationAPI) -> None: beneficiary = force_bytes_to_address(computation.stack_pop1_bytes()) is_dead = ( not computation.state.account_exists(beneficiary) or computation.state.account_is_empty(beneficiary) ) if is_dead and computation.state.get_balance(computation.msg.storage_address): computation.consume_gas( constants.GAS_SELFDESTRUCT_NEWACCOUNT, reason=mnemonics.SELFDESTRUCT, ) _selfdestruct(computation, beneficiary)
def extcodehash(computation: ComputationAPI) -> None: """ Return the code hash for a given address. EIP: https://github.com/ethereum/EIPs/blob/master/EIPS/eip-1052.md """ account = force_bytes_to_address(computation.stack_pop1_bytes()) state = computation.state if state.account_is_empty(account): computation.stack_push_bytes(constants.NULL_BYTE) else: computation.stack_push_bytes(state.get_code_hash(account))
def extcodecopy(computation: ComputationAPI) -> None: account = force_bytes_to_address(computation.stack_pop1_bytes()) ( mem_start_position, code_start_position, size, ) = computation.stack_pop_ints(3) computation.extend_memory(mem_start_position, size) word_count = ceil32(size) // 32 copy_gas_cost = constants.GAS_COPY * word_count computation.consume_gas( copy_gas_cost, reason='EXTCODECOPY: word gas cost', ) code = computation.state.get_code(account) code_bytes = code[code_start_position:code_start_position + size] padded_code_bytes = code_bytes.ljust(size, b'\x00') computation.memory_write(mem_start_position, size, padded_code_bytes)
def selfdestruct(computation: ComputationAPI) -> None: beneficiary = force_bytes_to_address(computation.stack_pop1_bytes()) _selfdestruct(computation, beneficiary)
def extcodesize(computation: ComputationAPI) -> None: account = force_bytes_to_address(computation.stack_pop1_bytes()) code_size = len(computation.state.get_code(account)) computation.stack_push_int(code_size)
def balance(computation: ComputationAPI) -> None: addr = force_bytes_to_address(computation.stack_pop1_bytes()) _push_balance_of_address(addr, computation)