LiquidityPoolUtils

Library to abstract liquidity pool operations such as fetching observations, calculating TWAP, etc. Currently supports Uniswap V3 and Algebra V1.9 liquidity pools

getLiquidityPoolInfo

function getLiquidityPoolInfo(struct IPriceAggregator.LiquidityPoolInput _input) internal view returns (struct IPriceAggregator.LiquidityPoolInfo)

Returns a LiquidityPoolInfo struct for LiquidityPoolInput _input

Parameters

Name	Type	Description
_input	IPriceAggregator.LiquidityPoolInput	LiquidityPoolInput struct with pool address and type

getTimeWeightedAveragePrice

function getTimeWeightedAveragePrice(struct IPriceAggregator.LiquidityPoolInfo _poolInfo, uint32 _twapInterval, uint256 _precisionDelta) internal view returns (uint256)

Calculates the time-weighted average price of a liquidity pool over a given interval

Parameters

Name	Type	Description
_poolInfo	IPriceAggregator.LiquidityPoolInfo	Liquidity pool info
_twapInterval	uint32	TWAP interval in seconds
_precisionDelta	uint256	precision delta of collateral

_getPoolTickCumulatives

function _getPoolTickCumulatives(struct IPriceAggregator.LiquidityPoolInfo _poolInfo, uint32 _twapInterval) internal view returns (int56[])

Fetches tickCumulatives data from the pool. Calls the appropriate oracle function based on the pool type

Parameters

Name	Type	Description
_poolInfo	IPriceAggregator.LiquidityPoolInfo	Liquidity pool info
_twapInterval	uint32	TWAP interval

_tickCumulativesToTokenPrice

function _tickCumulativesToTokenPrice(int56[] _tickCumulatives, uint32 _twapInterval, uint256 _precisionDelta, bool _isGnsToken0InLp) internal pure returns (uint256)

Returns TWAP price (1e10 precision) from tickCumulatives data

Parameters

Name	Type	Description
_tickCumulatives	int56[]	array of tickCumulatives
_twapInterval	uint32	TWAP interval
_precisionDelta	uint256	precision delta of collateral
_isGnsToken0InLp	bool	true if GNS is token0 in LP Inspired from https://github.com/Uniswap/v3-periphery/blob/main/contracts/libraries/OracleLibrary.sol