eth-contract-registry/python/eth_contract_registry/interface.py
2021-04-30 13:11:22 +02:00

44 lines
1.1 KiB
Python

# external imports
from chainlib.jsonrpc import (
jsonrpc_template,
)
from chainlib.eth.contract import (
ABIContractEncoder,
ABIContractType,
abi_decode_single,
)
from chainlib.eth.tx import TxFactory
from hexathon import (
add_0x,
)
from chainlib.eth.constant import (
ZERO_ADDRESS,
)
# local imports
from .encoding import (
to_identifier,
)
class Registry(TxFactory):
def address_of(self, contract_address, identifier_string, sender_address=ZERO_ADDRESS):
o = jsonrpc_template()
o['method'] = 'eth_call'
enc = ABIContractEncoder()
enc.method('addressOf')
enc.typ(ABIContractType.BYTES32)
identifier = to_identifier(identifier_string)
enc.bytes32(identifier)
data = add_0x(enc.encode())
tx = self.template(sender_address, contract_address)
tx = self.set_code(tx, data)
o['params'].append(self.normalize(tx))
return o
@classmethod
def parse_address_of(self, v):
return abi_decode_single(ABIContractType.ADDRESS, v)