39 lines
1.0 KiB
Python
39 lines
1.0 KiB
Python
# standard imports
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from chainlib.eth.constant import ZERO_ADDRESS
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# external imports
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from chainlib.jsonrpc import (
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jsonrpc_template,
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)
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from hexathon import (
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add_0x,
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)
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from chainlib.eth.contract import (
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ABIContractEncoder,
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ABIContractDecoder,
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ABIContractType,
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abi_decode_single,
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)
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from chainlib.eth.tx import TxFactory
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class EIP165(TxFactory):
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def supports_interface(self, contract_address, interface_sum, sender_address=ZERO_ADDRESS):
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o = jsonrpc_template()
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o['method'] = 'eth_call'
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enc = ABIContractEncoder()
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enc.method('supportsInterface')
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enc.typ(ABIContractType.BYTES4)
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enc.bytes4(interface_sum)
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data = add_0x(enc.get())
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tx = self.template(sender_address, contract_address)
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tx = self.set_code(tx, data)
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o['params'].append(self.normalize(tx))
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return o
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@classmethod
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def parse_supports_interface(self, v):
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return abi_decode_single(ABIContractType.BOOLEAN, v)
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