def _prepare_parameter(self, *args, **kwargs) -> "tronpy.tron.TransactionBuilder":
"""Prepare parameter."""
parameter = ""
if args and kwargs:
raise ValueError("do not mix positional arguments and keyword arguments")
if len(self.inputs) == 0:
if args or kwargs:
raise TypeError("{} expected {} arguments".format(self.name, len(self.inputs)))
elif args:
if len(args) != len(self.inputs):
raise TypeError("wrong number of arguments, require {} got {}".format(len(self.inputs), len(args)))
parameter = trx_abi.encode_single(self.input_type, args).hex()
elif kwargs:
if len(kwargs) != len(self.inputs):
raise TypeError("wrong number of arguments, require {} got {}".format(len(self.inputs), len(args)))
args = []
for arg in self.inputs:
try:
args.append(kwargs[arg["name"]])
except KeyError:
raise TypeError("missing argument '{}'".format(arg["name"]))
parameter = trx_abi.encode_single(self.input_type, args).hex()
else:
raise TypeError("wrong number of arguments, require {}".format(len(self.inputs)))
return parameter
def encode_parameter(self, *args, **kwargs) -> str:
"""Encode constructor parameters according to ABI."""
parameter = ""
if args and kwargs:
raise ValueError("do not mix positional arguments and keyword arguments")
if len(self.inputs) == 0:
if args or kwargs:
raise TypeError("{} constructor requires {} arguments".format(self._contract.name, len(self.inputs)))
elif args:
if len(args) != len(self.inputs):
raise TypeError("wrong number of arguments, require {} got {}".format(len(self.inputs), len(args)))
parameter = trx_abi.encode_single(self.input_type, args).hex()
elif kwargs:
if len(kwargs) != len(self.inputs):
raise TypeError("wrong number of arguments, require {} got {}".format(len(self.inputs), len(args)))
args = []
for arg in self.inputs:
try:
args.append(kwargs[arg["name"]])
except KeyError:
raise TypeError("missing argument '{}'".format(arg["name"]))
parameter = trx_abi.encode_single(self.input_type, args).hex()
return parameter
def __call__(self, *args, **kwargs) -> "tronpy.tron.TransactionBuilder":
"""Call the contract method."""
parameter = ""
if args and kwargs:
raise ValueError("do not mix positional arguments and keyword arguments")
if len(self.inputs) == 0:
if args or kwargs:
raise TypeError("{} expected {} arguments".format(self.name, len(self.inputs)))
elif args:
if len(args) != len(self.inputs):
raise TypeError("wrong number of arguments, require {} got {}".format(len(self.inputs), len(args)))
parameter = trx_abi.encode_single(self.input_type, args).hex()
elif kwargs:
if len(kwargs) != len(self.inputs):
raise TypeError("wrong number of arguments, require {} got {}".format(len(self.inputs), len(args)))
args = []
for arg in self.inputs:
try:
args.append(kwargs[arg["name"]])
except KeyError:
raise TypeError("missing argument '{}'".format(arg["name"]))
parameter = trx_abi.encode_single(self.input_type, args).hex()
else:
raise TypeError("wrong number of arguments, require {}".format(len(self.inputs)))
if self._abi.get("stateMutability", None).lower() in ["view", "pure"]:
# const call, contract ret
ret = self._client.trigger_const_smart_contract_function(
self._owner_address, self._contract.contract_address, self.function_signature, parameter,
)
return self.parse_output(ret)
else:
return self._client.trx._build_transaction(
"TriggerSmartContract",
{
"owner_address": keys.to_hex_address(self._owner_address),
"contract_address": keys.to_hex_address(self._contract.contract_address),
"data": self.function_signature_hash + parameter,
"call_token_value": self.call_token_value,
"call_value": self.call_value,
"token_id": self.call_token_id,
},
method=self,
)
def test_abi_encode():
assert (trx_abi.encode_single(
"address", "TLfuw4tRywtxCusvTudbjf7PbcXjfe7qrw").hex() ==
'0000000000000000000000007564105e977516c53be337314c7e53838967bdac')
assert trx_abi.encode_single("(address,uint256)", [
"TLfuw4tRywtxCusvTudbjf7PbcXjfe7qrw", 100_000_000
]).hex() == (
'0000000000000000000000007564105e977516c53be337314c7e53838967bdac' +
'0000000000000000000000000000000000000000000000000000000005f5e100')