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erc20-demurrage-token-archive/python/erc20_demurrage_token/token.py

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# standard imports
import os
import logging
# external imports
from chainlib.eth.tx import (
TxFactory,
TxFormat,
)
from chainlib.hash import keccak256_string_to_hex
from chainlib.eth.contract import (
ABIContractEncoder,
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ABIContractDecoder,
ABIContractType,
abi_decode_single,
)
from chainlib.eth.constant import ZERO_ADDRESS
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from chainlib.jsonrpc import JSONRPCRequest
from eth_erc20 import ERC20
from hexathon import (
add_0x,
strip_0x,
)
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from dexif import from_fixed
# local imports
from erc20_demurrage_token.data import data_dir
from erc20_demurrage_token.seal import SealedContract
from erc20_demurrage_token.expiry import ExpiryContract
logg = logging.getLogger(__name__)
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class DemurrageRedistribution:
def __init__(self, v):
d = ABIContractDecoder()
v = strip_0x(v)
d.typ(ABIContractType.UINT256)
d.typ(ABIContractType.UINT256)
d.typ(ABIContractType.BYTES32)
d.val(v[:64])
d.val(v[64:128])
d.val(v[128:192])
r = d.decode()
self.period = r[0]
self.value = r[1]
self.demurrage = from_fixed(r[2])
def __str__(self):
return 'period {} value {} demurrage {}'.format(self.period, self.value, self.demurrage)
class DemurrageTokenSettings:
def __init__(self):
self.name = None
self.symbol = None
self.decimals = None
self.demurrage_level = None
self.period_minutes = None
self.sink_address = None
def __str__(self):
return 'name {} demurrage level {} period minutes {} sink address {}'.format(
self.name,
self.demurrage_level,
self.period_minutes,
self.sink_address,
)
class DemurrageToken(ERC20, SealedContract, ExpiryContract):
__abi = {}
__bytecode = {}
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def constructor(self, sender_address, settings, tx_format=TxFormat.JSONRPC):
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code = DemurrageToken.bytecode()
enc = ABIContractEncoder()
enc.string(settings.name)
enc.string(settings.symbol)
enc.uint256(settings.decimals)
enc.uint256(settings.demurrage_level)
enc.uint256(settings.period_minutes)
enc.address(settings.sink_address)
code += enc.get()
tx = self.template(sender_address, None, use_nonce=True)
tx = self.set_code(tx, code)
return self.finalize(tx, tx_format)
@staticmethod
def gas(code=None):
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return 4000000
@staticmethod
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def abi(multi=True):
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name = 'DemurrageTokenSingleNocap'
if DemurrageToken.__abi.get(name) == None:
f = open(os.path.join(data_dir, name + '.json'), 'r')
DemurrageToken.__abi[name] = json.load(f)
f.close()
return DemurrageToken.__abi[name]
@staticmethod
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def bytecode(multi=True):
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name = 'DemurrageTokenSingleNocap'
if DemurrageToken.__bytecode.get(name) == None:
f = open(os.path.join(data_dir, name + '.bin'), 'r')
DemurrageToken.__bytecode[name] = f.read()
f.close()
return DemurrageToken.__bytecode[name]
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def increase_allowance(self, contract_address, sender_address, address, value, tx_format=TxFormat.JSONRPC):
enc = ABIContractEncoder()
enc.method('increaseAllowance')
enc.typ(ABIContractType.ADDRESS)
enc.typ(ABIContractType.UINT256)
enc.address(address)
enc.uint256(value)
data = enc.get()
tx = self.template(sender_address, contract_address, use_nonce=True)
tx = self.set_code(tx, data)
tx = self.finalize(tx, tx_format)
return tx
def decrease_allowance(self, contract_address, sender_address, address, value, tx_format=TxFormat.JSONRPC):
enc = ABIContractEncoder()
enc.method('decreaseAllowance')
enc.typ(ABIContractType.ADDRESS)
enc.typ(ABIContractType.UINT256)
enc.address(address)
enc.uint256(value)
data = enc.get()
tx = self.template(sender_address, contract_address, use_nonce=True)
tx = self.set_code(tx, data)
tx = self.finalize(tx, tx_format)
return tx
def add_minter(self, contract_address, sender_address, address, tx_format=TxFormat.JSONRPC):
enc = ABIContractEncoder()
enc.method('addMinter')
enc.typ(ABIContractType.ADDRESS)
enc.address(address)
data = enc.get()
tx = self.template(sender_address, contract_address, use_nonce=True)
tx = self.set_code(tx, data)
tx = self.finalize(tx, tx_format)
return tx
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def set_max_supply(self, contract_address, sender_address, cap, tx_format=TxFormat.JSONRPC):
enc = ABIContractEncoder()
enc.method('setMaxSupply')
enc.typ(ABIContractType.UINT256)
enc.uint256(cap)
data = enc.get()
tx = self.template(sender_address, contract_address, use_nonce=True)
tx = self.set_code(tx, data)
tx = self.finalize(tx, tx_format)
return tx
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def remove_minter(self, contract_address, sender_address, address, tx_format=TxFormat.JSONRPC):
enc = ABIContractEncoder()
enc.method('removeMinter')
enc.typ(ABIContractType.ADDRESS)
enc.address(address)
data = enc.get()
tx = self.template(sender_address, contract_address, use_nonce=True)
tx = self.set_code(tx, data)
tx = self.finalize(tx, tx_format)
return tx
def mint_to(self, contract_address, sender_address, address, value, tx_format=TxFormat.JSONRPC):
enc = ABIContractEncoder()
enc.method('mintTo')
enc.typ(ABIContractType.ADDRESS)
enc.typ(ABIContractType.UINT256)
enc.address(address)
enc.uint256(value)
data = enc.get()
tx = self.template(sender_address, contract_address, use_nonce=True)
tx = self.set_code(tx, data)
tx = self.finalize(tx, tx_format)
return tx
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def burn(self, contract_address, sender_address, value, tx_format=TxFormat.JSONRPC):
enc = ABIContractEncoder()
enc.method('burn')
enc.typ(ABIContractType.UINT256)
enc.uint256(value)
data = enc.get()
tx = self.template(sender_address, contract_address, use_nonce=True)
tx = self.set_code(tx, data)
tx = self.finalize(tx, tx_format)
return tx
def total_burned(self, contract_address, sender_address=ZERO_ADDRESS, id_generator=None):
j = JSONRPCRequest(id_generator)
o = j.template()
o['method'] = 'eth_call'
enc = ABIContractEncoder()
enc.method('totalBurned')
data = add_0x(enc.get())
tx = self.template(sender_address, contract_address)
tx = self.set_code(tx, data)
o['params'].append(self.normalize(tx))
o['params'].append('latest')
o = j.finalize(o)
return o
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def to_base_amount(self, contract_address, value, sender_address=ZERO_ADDRESS, id_generator=None):
j = JSONRPCRequest(id_generator)
o = j.template()
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o['method'] = 'eth_call'
enc = ABIContractEncoder()
enc.method('toBaseAmount')
enc.typ(ABIContractType.UINT256)
enc.uint256(value)
data = add_0x(enc.get())
tx = self.template(sender_address, contract_address)
tx = self.set_code(tx, data)
o['params'].append(self.normalize(tx))
o['params'].append('latest')
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o = j.finalize(o)
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return o
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def remainder(self, contract_address, parts, whole, sender_address=ZERO_ADDRESS, id_generator=None):
j = JSONRPCRequest(id_generator)
o = j.template()
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o['method'] = 'eth_call'
enc = ABIContractEncoder()
enc.method('remainder')
enc.typ(ABIContractType.UINT256)
enc.typ(ABIContractType.UINT256)
enc.uint256(parts)
enc.uint256(whole)
data = add_0x(enc.get())
tx = self.template(sender_address, contract_address)
tx = self.set_code(tx, data)
o['params'].append(self.normalize(tx))
o['params'].append('latest')
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o = j.finalize(o)
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return o
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def redistributions(self, contract_address, idx, sender_address=ZERO_ADDRESS, id_generator=None):
j = JSONRPCRequest(id_generator)
o = j.template()
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o['method'] = 'eth_call'
enc = ABIContractEncoder()
enc.method('redistributions')
enc.typ(ABIContractType.UINT256)
enc.uint256(idx)
data = add_0x(enc.get())
tx = self.template(sender_address, contract_address)
tx = self.set_code(tx, data)
o['params'].append(self.normalize(tx))
o['params'].append('latest')
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o = j.finalize(o)
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return o
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def account_period(self, contract_address, address, sender_address=ZERO_ADDRESS, id_generator=None):
j = JSONRPCRequest(id_generator)
o = j.template()
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o['method'] = 'eth_call'
enc = ABIContractEncoder()
enc.method('accountPeriod')
enc.typ(ABIContractType.ADDRESS)
enc.address(address)
data = add_0x(enc.get())
tx = self.template(sender_address, contract_address)
tx = self.set_code(tx, data)
o['params'].append(self.normalize(tx))
o['params'].append('latest')
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o = j.finalize(o)
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return o
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def to_redistribution(self, contract_address, participants, demurrage_modifier, value, period, sender_address=ZERO_ADDRESS, id_generator=None):
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j = JSONRPCRequest(id_generator)
o = j.template()
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o['method'] = 'eth_call'
enc = ABIContractEncoder()
enc.method('toRedistribution')
enc.typ(ABIContractType.UINT256)
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enc.typ_literal('int128')
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enc.typ(ABIContractType.UINT256)
enc.typ(ABIContractType.UINT256)
enc.uint256(participants)
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enc.uint256(demurrage_modifier)
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enc.uint256(value)
enc.uint256(period)
data = add_0x(enc.get())
tx = self.template(sender_address, contract_address)
tx = self.set_code(tx, data)
o['params'].append(self.normalize(tx))
o['params'].append('latest')
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o = j.finalize(o)
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return o
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def to_redistribution_period(self, contract_address, redistribution, sender_address=ZERO_ADDRESS, id_generator=None):
j = JSONRPCRequest(id_generator)
o = j.template()
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o['method'] = 'eth_call'
enc = ABIContractEncoder()
enc.method('toRedistributionPeriod')
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v = strip_0x(redistribution)
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enc.typ_literal('(uint32,uint72,uint64)')
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enc.bytes32(v[:64])
enc.bytes32(v[64:128])
enc.bytes32(v[128:192])
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data = add_0x(enc.get())
tx = self.template(sender_address, contract_address)
tx = self.set_code(tx, data)
o['params'].append(self.normalize(tx))
o['params'].append('latest')
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o = j.finalize(o)
return o
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# def to_redistribution_participants(self, contract_address, redistribution, sender_address=ZERO_ADDRESS, id_generator=None):
# j = JSONRPCRequest(id_generator)
# o = j.template()
# o['method'] = 'eth_call'
# enc = ABIContractEncoder()
# enc.method('toRedistributionParticipants')
# v = strip_0x(redistribution)
# enc.typ_literal('(uint32,uint72,uint104)')
# #enc.typ(ABIContractType.BYTES32)
# enc.bytes32(v[:64])
# enc.bytes32(v[64:128])
# enc.bytes32(v[128:192])
# data = add_0x(enc.get())
# tx = self.template(sender_address, contract_address)
# tx = self.set_code(tx, data)
# o['params'].append(self.normalize(tx))
# o['params'].append('latest')
# o = j.finalize(o)
# return o
#
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def to_redistribution_supply(self, contract_address, redistribution, sender_address=ZERO_ADDRESS, id_generator=None):
j = JSONRPCRequest(id_generator)
o = j.template()
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o['method'] = 'eth_call'
enc = ABIContractEncoder()
enc.method('toRedistributionSupply')
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v = strip_0x(redistribution)
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enc.typ_literal('(uint32,uint72,uint64)')
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enc.bytes32(v[:64])
enc.bytes32(v[64:128])
enc.bytes32(v[128:192])
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data = add_0x(enc.get())
tx = self.template(sender_address, contract_address)
tx = self.set_code(tx, data)
o['params'].append(self.normalize(tx))
o['params'].append('latest')
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o = j.finalize(o)
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return o
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def to_redistribution_demurrage_modifier(self, contract_address, redistribution, sender_address=ZERO_ADDRESS, id_generator=None):
j = JSONRPCRequest(id_generator)
o = j.template()
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o['method'] = 'eth_call'
enc = ABIContractEncoder()
enc.method('toRedistributionDemurrageModifier')
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v = strip_0x(redistribution)
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enc.typ_literal('(uint32,uint72,uint64)')
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enc.bytes32(v[:64])
enc.bytes32(v[64:128])
enc.bytes32(v[128:192])
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data = add_0x(enc.get())
tx = self.template(sender_address, contract_address)
tx = self.set_code(tx, data)
o['params'].append(self.normalize(tx))
o['params'].append('latest')
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o = j.finalize(o)
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return o
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def base_balance_of(self, contract_address, address, sender_address=ZERO_ADDRESS, id_generator=None):
j = JSONRPCRequest(id_generator)
o = j.template()
o['method'] = 'eth_call'
enc = ABIContractEncoder()
enc.method('baseBalanceOf')
enc.typ(ABIContractType.ADDRESS)
enc.address(address)
data = add_0x(enc.get())
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tx = self.template(sender_address, contract_address)
tx = self.set_code(tx, data)
o['params'].append(self.normalize(tx))
o['params'].append('latest')
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o = j.finalize(o)
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return o
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def set_sink_address(self, contract_address, sender_address, address, tx_format=TxFormat.JSONRPC):
enc = ABIContractEncoder()
enc.method('setSinkAddress')
enc.typ(ABIContractType.ADDRESS)
enc.address(address)
data = enc.get()
tx = self.template(sender_address, contract_address, use_nonce=True)
tx = self.set_code(tx, data)
tx = self.finalize(tx, tx_format)
return tx
def apply_demurrage(self, contract_address, sender_address, limit=0, tx_format=TxFormat.JSONRPC):
if limit == 0:
return self.transact_noarg('applyDemurrage', contract_address, sender_address)
enc = ABIContractEncoder()
enc.method('applyDemurrageLimited')
enc.typ(ABIContractType.UINT256)
enc.uint256(limit)
data = enc.get()
tx = self.template(sender_address, contract_address, use_nonce=True)
tx = self.set_code(tx, data)
tx = self.finalize(tx, tx_format)
return tx
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def change_period(self, contract_address, sender_address):
return self.transact_noarg('changePeriod', contract_address, sender_address)
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def apply_redistribution_on_account(self, contract_address, sender_address, address, tx_format=TxFormat.JSONRPC):
enc = ABIContractEncoder()
enc.method('applyRedistributionOnAccount')
enc.typ(ABIContractType.ADDRESS)
enc.address(address)
data = enc.get()
tx = self.template(sender_address, contract_address, use_nonce=True)
tx = self.set_code(tx, data)
tx = self.finalize(tx, tx_format)
return tx
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def tax_level(self, contract_address, sender_address=ZERO_ADDRESS):
return self.call_noarg('taxLevel', contract_address, sender_address=sender_address)
def resolution_factor(self, contract_address, sender_address=ZERO_ADDRESS):
return self.call_noarg('resolutionFactor', contract_address, sender_address=sender_address)
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def actual_period(self, contract_address, sender_address=ZERO_ADDRESS):
return self.call_noarg('actualPeriod', contract_address, sender_address=sender_address)
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def period_start(self, contract_address, sender_address=ZERO_ADDRESS):
return self.call_noarg('periodStart', contract_address, sender_address=sender_address)
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def period_duration(self, contract_address, sender_address=ZERO_ADDRESS):
return self.call_noarg('periodDuration', contract_address, sender_address=sender_address)
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def demurrage_amount(self, contract_address, sender_address=ZERO_ADDRESS):
return self.call_noarg('demurrageAmount', contract_address, sender_address=sender_address)
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def demurrage_timestamp(self, contract_address, sender_address=ZERO_ADDRESS):
return self.call_noarg('demurrageTimestamp', contract_address, sender_address=sender_address)
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def max_supply(self, contract_address, sender_address=ZERO_ADDRESS):
return self.call_noarg('maxSupply', contract_address, sender_address=sender_address)
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# def grow_by(self, contract_address, value, period, sender_address=ZERO_ADDRESS, id_generator=None):
# j = JSONRPCRequest(id_generator)
# o = j.template()
# o['method'] = 'eth_call'
# enc = ABIContractEncoder()
# enc.method('growBy')
# enc.typ(ABIContractType.UINT256)
# enc.typ(ABIContractType.UINT256)
# enc.uint256(value)
# enc.uint256(period)
# data = add_0x(enc.get())
# tx = self.template(sender_address, contract_address)
# tx = self.set_code(tx, data)
# o['params'].append(self.normalize(tx))
# o['params'].append('latest')
# o = j.finalize(o)
# return o
#
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def decay_by(self, contract_address, value, period, sender_address=ZERO_ADDRESS, id_generator=None):
j = JSONRPCRequest(id_generator)
o = j.template()
o['method'] = 'eth_call'
enc = ABIContractEncoder()
enc.method('decayBy')
enc.typ(ABIContractType.UINT256)
enc.typ(ABIContractType.UINT256)
enc.uint256(value)
enc.uint256(period)
data = add_0x(enc.get())
tx = self.template(sender_address, contract_address)
tx = self.set_code(tx, data)
o['params'].append(self.normalize(tx))
o['params'].append('latest')
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o = j.finalize(o)
return o
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def get_distribution(self, contract_address, supply, demurrage_amount, sender_address=ZERO_ADDRESS, id_generator=None):
j = JSONRPCRequest(id_generator)
o = j.template()
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o['method'] = 'eth_call'
enc = ABIContractEncoder()
enc.method('getDistribution')
enc.typ(ABIContractType.UINT256)
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enc.typ_literal('int128')
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enc.uint256(supply)
enc.uint256(demurrage_amount)
data = add_0x(enc.get())
tx = self.template(sender_address, contract_address)
tx = self.set_code(tx, data)
o['params'].append(self.normalize(tx))
o['params'].append('latest')
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o = j.finalize(o)
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return o
def get_distribution_from_redistribution(self, contract_address, redistribution, sender_address=ZERO_ADDRESS, id_generator=None):
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j = JSONRPCRequest(id_generator)
o = j.template()
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o['method'] = 'eth_call'
enc = ABIContractEncoder()
enc.method('getDistributionFromRedistribution')
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v = strip_0x(redistribution)
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enc.typ_literal('(uint32,uint72,uint64)')
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enc.bytes32(v[:64])
enc.bytes32(v[64:128])
enc.bytes32(v[128:192])
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data = add_0x(enc.get())
tx = self.template(sender_address, contract_address)
tx = self.set_code(tx, data)
o['params'].append(self.normalize(tx))
o['params'].append('latest')
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o = j.finalize(o)
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return o
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@classmethod
def parse_actual_period(self, v):
return abi_decode_single(ABIContractType.UINT256, v)
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@classmethod
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def parse_period_start(self, v):
return abi_decode_single(ABIContractType.UINT256, v)
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@classmethod
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def parse_period_duration(self, v):
return abi_decode_single(ABIContractType.UINT256, v)
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@classmethod
def parse_demurrage_amount(self, v):
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# return abi_decode_single(ABIContractType.UINT256, v)
return from_fixed(v)
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@classmethod
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def parse_remainder(self, v):
return abi_decode_single(ABIContractType.UINT256, v)
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@classmethod
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def parse_to_base_amount(self, v):
return abi_decode_single(ABIContractType.UINT256, v)
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@classmethod
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def parse_redistributions(self, v):
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return strip_0x(v)
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@classmethod
def parse_account_period(self, v):
return abi_decode_single(ABIContractType.ADDRESS, v)
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@classmethod
def parse_to_redistribution_period(self, v):
return abi_decode_single(ABIContractType.UINT256, v)
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@classmethod
def parse_to_redistribution_item(self, v):
return abi_decode_single(ABIContractType.UINT256, v)
@classmethod
def parse_supply_cap(self, v):
return abi_decode_single(ABIContractType.UINT256, v)
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@classmethod
def parse_grow_by(self, v):
return abi_decode_single(ABIContractType.UINT256, v)
@classmethod
def parse_decay_by(self, v):
return abi_decode_single(ABIContractType.UINT256, v)
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@classmethod
def parse_get_distribution(self, v):
return abi_decode_single(ABIContractType.UINT256, v)
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@classmethod
def parse_tax_level(self, v):
return abi_decode_single(ABIContractType.UINT256, v)
@classmethod
def parse_resolution_factor(self, v):
return abi_decode_single(ABIContractType.UINT256, v)
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@classmethod
def parse_total_burned(self, v):
return abi_decode_single(ABIContractType.UINT256, v)
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