def encodeABI(cls, fn_name, args=None, kwargs=None, data=None):
"""
Encodes the arguments using the Ethereum ABI for the contract function
that matches the given name and arguments..
:param data: defaults to function selector
"""
fn_abi, fn_selector, fn_arguments = get_function_info(
fn_name, contract_abi=cls.abi, args=args, kwargs=kwargs,
)
if data is None:
data = fn_selector
return encode_abi(cls.web3, fn_abi, fn_arguments, data)
def encodeABI(cls, fn_name, args=None, kwargs=None, data=None):
"""
Encodes the arguments using the Ethereum ABI for the contract function
that matches the given name and arguments..
:param data: defaults to function selector
"""
fn_abi, fn_selector, fn_arguments = get_function_info(
fn_name, cls.web3.codec, contract_abi=cls.abi, args=args, kwargs=kwargs,
)
if data is None:
data = fn_selector
return encode_abi(cls.web3, fn_abi, fn_arguments, data)
def from_contract_abi(cls, web3: Web3, fn_sign: str, fn_args: list,
contract_abi):
""" Create a `Calldata` according to the given contract abi """
assert isinstance(web3, Web3)
assert isinstance(fn_sign, str)
assert isinstance(fn_args, list)
fn_split = re.split('[(),]', fn_sign)
fn_name = fn_split[0]
fn_abi, fn_selector, fn_arguments = get_function_info(
fn_name,
abi_codec=web3.codec,
contract_abi=contract_abi,
args=fn_args)
calldata = encode_abi(web3, fn_abi, fn_arguments, fn_selector)
return cls(calldata)
def from_signature(cls, web3: Web3, fn_sign: str, fn_args: list):
""" Allow to create a `Calldata` from a function signature and a list of arguments.
:param fn_sign: the function signature ie. "function(uint256,address)"
:param fn_args: arguments to the function ie. [123, "0x00...00"]
"""
assert isinstance(fn_sign, str)
assert isinstance(fn_args, list)
fn_split = re.split('[(),]', fn_sign)
fn_name = fn_split[0]
fn_args_type = [{"type": type} for type in fn_split[1:] if type]
fn_abi = {"type": "function", "name": fn_name, "inputs": fn_args_type}
fn_abi, fn_selector, fn_arguments = get_function_info("test", abi_codec=web3.codec, fn_abi=fn_abi, args=fn_args)
calldata = encode_abi(web3, fn_abi, fn_arguments, fn_selector)
return cls(calldata)