def encode_abi(web3, abi, arguments, data=None):
argument_types = get_abi_input_types(abi)
if not check_if_arguments_can_be_encoded(abi, arguments, {}):
raise TypeError(
"One or more arguments could not be encoded to the necessary "
"ABI type. Expected types are: {0}".format(
', '.join(argument_types), ))
normalizers = [
abi_ens_resolver(web3),
abi_address_to_hex,
abi_bytes_to_bytes,
abi_string_to_text,
]
normalized_arguments = map_abi_data(
normalizers,
argument_types,
arguments,
)
encoded_arguments = eth_abi_encode_abi(
argument_types,
normalized_arguments,
)
if data:
return to_hex(HexBytes(data) + encoded_arguments)
else:
return encode_hex(encoded_arguments)
def name_to_address_middleware(w3):
normalizers = [
abi_ens_resolver(w3),
]
return construct_formatting_middleware(
request_formatters=abi_request_formatters(normalizers, RPC_ABIS)
)
def encode_abi(w3: "Web3",
abi: ABIFunction,
arguments: Sequence[Any],
data: Optional[HexStr] = None) -> HexStr:
argument_types = get_abi_input_types(abi)
if not check_if_arguments_can_be_encoded(abi, w3.codec, arguments, {}):
raise TypeError(
"One or more arguments could not be encoded to the necessary "
f"ABI type. Expected types are: {', '.join(argument_types)}")
normalizers = [
abi_ens_resolver(w3),
abi_address_to_hex,
abi_bytes_to_bytes,
abi_string_to_text,
]
normalized_arguments = map_abi_data(
normalizers,
argument_types,
arguments,
)
encoded_arguments = w3.codec.encode_abi(
argument_types,
normalized_arguments,
)
if data:
return to_hex(HexBytes(data) + encoded_arguments)
else:
return encode_hex(encoded_arguments)
def solidityKeccak(cls, abi_types: List[TypeStr],
values: List[Any]) -> bytes:
"""
Executes keccak256 exactly as Solidity does.
Takes list of abi_types as inputs -- `[uint24, int8[], bool]`
and list of corresponding values -- `[20, [-1, 5, 0], True]`
"""
if len(abi_types) != len(values):
raise ValueError(
"Length mismatch between provided abi types and values. Got "
"{0} types and {1} values.".format(len(abi_types),
len(values)))
if isinstance(cls, type):
w3 = None
else:
w3 = cls
normalized_values = map_abi_data([abi_ens_resolver(w3)], abi_types,
values)
hex_string = add_0x_prefix(
HexStr(''.join(
remove_0x_prefix(hex_encode_abi_type(abi_type, value))
for abi_type, value in zip(abi_types, normalized_values))))
return cls.keccak(hexstr=hex_string)
def address_resolver_munger(
self,
account: Union[Address, ChecksumAddress, ENS],
block_identifier: Optional[BlockIdentifier] = None
) -> Tuple[Union[Address, ChecksumAddress, ENS], BlockIdentifier]:
resolved_addr = abi_ens_resolver(self.web3, 'address', account)[1]
if block_identifier is None:
block_identifier = self.defaultBlock
return (resolved_addr, block_identifier)
def encode_abi(web3, abi, arguments, data=None):
argument_types = get_abi_input_types(abi)
if not check_if_arguments_can_be_encoded(abi, arguments, {}):
raise TypeError(
"One or more arguments could not be encoded to the necessary "
"ABI type. Expected types are: {0}".format(
', '.join(argument_types),
)
)
try:
normalizers = [
abi_ens_resolver(web3),
abi_address_to_hex,
abi_bytes_to_bytes,
abi_string_to_text,
]
normalized_arguments = map_abi_data(
normalizers,
argument_types,
arguments,
)
encoded_arguments = eth_abi_encode_abi(
argument_types,
normalized_arguments,
)
except EncodingError as e:
raise TypeError(
"One or more arguments could not be encoded to the necessary "
"ABI type: {0}".format(str(e))
)
if data:
return to_hex(HexBytes(data) + encoded_arguments)
else:
return encode_hex(encoded_arguments)
