mirror of
https://github.com/grassrootseconomics/erc20-pool.git
synced 2024-11-25 21:36:45 +01:00
99 lines
2.6 KiB
Python
99 lines
2.6 KiB
Python
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# standard imports
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import logging
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import os
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import enum
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# external imports
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from chainlib.eth.constant import ZERO_ADDRESS
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from chainlib.eth.constant import ZERO_CONTENT
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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.jsonrpc import to_blockheight_param
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from chainlib.eth.error import RequestMismatchException
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from chainlib.eth.tx import (
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TxFactory,
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TxFormat,
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)
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from chainlib.jsonrpc import JSONRPCRequest
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from chainlib.block import BlockSpec
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from hexathon import (
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add_0x,
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strip_0x,
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)
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from chainlib.eth.cli.encode import CLIEncoder
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# local imports
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from erc20_pool.data import data_dir
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logg = logging.getLogger()
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class DecimalQuote(TxFactory):
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__abi = None
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__bytecode = None
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def constructor(self, sender_address, tx_format=TxFormat.JSONRPC, version=None):
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code = self.cargs(version=version)
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tx = self.template(sender_address, None, use_nonce=True)
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tx = self.set_code(tx, code)
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return self.finalize(tx, tx_format)
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@staticmethod
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def cargs(version=None):
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code = DecimalQuote.bytecode(version=version)
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enc = ABIContractEncoder()
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args = enc.get()
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code += args
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logg.debug('constructor code: ' + args)
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return code
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@staticmethod
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def gas(code=None):
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return 4000000
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@staticmethod
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def abi():
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if DecimalQuote.__abi == None:
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f = open(os.path.join(data_dir, 'DecimalQuote.json'), 'r')
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DecimalQuote.__abi = json.load(f)
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f.close()
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return DecimalQuote.__abi
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@staticmethod
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def bytecode(version=None):
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if DecimalQuote.__bytecode == None:
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f = open(os.path.join(data_dir, 'DecimalQuote.bin'))
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DecimalQuote.__bytecode = f.read()
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f.close()
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return DecimalQuote.__bytecode
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def value_for(self, contract_address, token_address_out, token_address_in, value_in, sender_address=ZERO_ADDRESS, id_generator=None):
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j = JSONRPCRequest(id_generator)
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o = j.template()
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o['method'] = 'eth_call'
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enc = ABIContractEncoder()
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enc.method('valueFor')
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enc.typ(ABIContractType.ADDRESS)
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enc.typ(ABIContractType.ADDRESS)
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enc.typ(ABIContractType.UINT256)
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enc.address(token_address_out)
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enc.address(token_address_in)
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enc.uint256(value_in)
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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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o['params'].append('latest')
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o = j.finalize(o)
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return o
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