OracleLibrary

Provides functions to integrate with V2 pool oracle

Functions​

consult​

  function consult(
    address pool,
    uint32 period
  ) internal view returns (int24 arithmeticMeanTick, uint128 harmonicMeanLiquidity)

Calculates time-weighted means of tick and liquidity for a given DragonswapV2 pool

Parameters:​

Name	Type	Description
pool	address	Address of DragonswapV2 pool that we want to observe
period	uint32	Number of seconds in the past to start calculating time-weighted average

Return Values:​

Name	Type	Description
arithmeticMeanTick	int24	The arithmetic mean tick from (block.timestamp - secondsAgo) to block.timestamp
harmonicMeanLiquidity	uint128	The harmonic mean liquidity from (block.timestamp - secondsAgo) to block.timestamp

getQuoteAtTick​

  function getQuoteAtTick(
    int24 tick,
    uint128 baseAmount,
    address baseToken,
    address quoteToken
  ) internal pure returns (uint256 quoteAmount)

Given a tick and a token amount, calculates the amount of token received in exchange

Parameters:​

Name	Type	Description
tick	int24	Tick value used to calculate the quote
baseAmount	uint128	Amount of token to be converted
baseToken	address	Address of an ERC20 token contract used as the baseAmount denomination
quoteToken	address	Address of an ERC20 token contract used as the quoteAmount denomination

Return Values:​

Name	Type	Description
quoteAmount	uint256	Amount of quoteToken received for baseAmount of baseToken