def calcInGivenOut(self, pool_address: str, token_in_address: str,
token_out_address: str, token_out_amount: float):
pool = BPool(pool_address)
in_amount = pool.calcInGivenOut(
pool.getBalance(token_in_address),
pool.getDenormalizedWeight(token_in_address),
pool.getBalance(token_out_address),
pool.getDenormalizedWeight(token_out_address),
to_base_18(token_out_amount), pool.getSwapFee())
return from_base_18(in_amount)
def calcInGivenOut(
self,
pool_address: str,
token_in_address: str,
token_out_address: str,
token_out_amount: int,
) -> int:
pool = BPool(self.web3, pool_address)
return pool.calcInGivenOut(
pool.getBalance(token_in_address),
pool.getDenormalizedWeight(token_in_address),
pool.getBalance(token_out_address),
pool.getDenormalizedWeight(token_out_address),
token_out_amount,
pool.getSwapFee(),
)
def get_pool_reserves_and_price(self, _pool, dt_address):
pool = BPool(_pool)
dt_reserve = pool.getBalance(dt_address)
ocn_reserve = pool.getBalance(self._checksum_ocean)
price_base = pool.calcInGivenOut(
ocn_reserve,
pool.getDenormalizedWeight(self._checksum_ocean), dt_reserve,
pool.getDenormalizedWeight(dt_address), to_base_18(1.0),
pool.getSwapFee())
price = from_base_18(price_base)
ocn_reserve = from_base_18(ocn_reserve)
dt_reserve = from_base_18(dt_reserve)
if dt_reserve <= 1.0:
price = 0.0
if price > self.PRICE_TOO_LARGE:
price = 0.0
return dt_reserve, ocn_reserve, price, _pool
