Skip to content

PoolsharkRangePair

Functions

snapshotLiquidityInside

  function snapshotLiquidityInside(
    int24 tickLower,
    int24 tickUpper
  ) external view override noDelegateCall returns (int56 tickCumulativeInside, uint160 secondsPerLiquidityInsideX128, uint32 secondsInside)
Use case: derive liquidity-in-range or time-weighted average price.

Returns a snapshot of the tick cumulative, seconds per liquidity and seconds inside the specified tick range.

This informs the caller of

1) The tick * time elapsed since the pool was first initialized
2) Seconds per liquidity for the range
3) The number of seconds inside the range
Snapshots should only be used if the position is held for the entire period in between.

Parameters:

Name Type Description
tickLower int24 The lower tick of the range
tickUpper int24 The upper tick of the range

Return Values:

Name Type Description
tickCumulativeInside int56 The snapshot of the tick accumulator for the range
secondsPerLiquidityInsideX128 uint160 The snapshot of seconds per liquidity for the range
secondsInside uint32 The snapshot of seconds per liquidity for the range

observe

  function observe(
    uint32[] secondsAgos
  ) external view override noDelegateCall returns (int56[] tickCumulatives, uint160[] secondsPerLiquidityCumulativeX128s)

Returns an array of sample cumulative tick (tick * seconds) and liquidity (in liquidity units) as of each timestamp secondsAgo from the current block.

To get a time weighted average tick or liquidity-in-range, you must pass two time values:

1) the beginning time 
2) the end time 
For example, to get the average tick for the last hour, you should call it with secondsAgos = [3600, 0].

The time weighted average tick represents the geometric time weighted average price of the pool, in log base sqrt(1.0001) of token1 / token0. The TickMath library can be used to go from a tick value to a ratio of the two tokens in the pool.

Parameters:

Name Type Description
secondsAgos uint32[] From how long ago each cumulative tick and liquidity value should be returned

Return Values:

Name Type Description
tickCumulatives int56[] Cumulative tick values as of each secondsAgos from the current block timestamp
secondsPerLiquidityCumulativeX128s uint160[] Cumulative seconds per liquidity-in-range value as of each secondsAgos from the current block

timestamp

increaseObservationLength

  function increaseObservationLength(
    uint16 observationLengthNext
  ) external override lock noDelegateCall

Increase the maximum number of price and liquidity observations that can be stored by the pool.

This method will not modify state if the pool already has an observationLengthNext greater than or equal to the input observationLengthNext.

Parameters:

Name Type Description
observationLengthNext uint16 The desired minimum number of observations for the pool to store

initialize

  function initialize(
    uint160 sqrtPriceX96
  ) external override

Sets the initial price for the pool.

Initializes unlocked.

Parameters:

Name Type Description
sqrtPrice64X96 uint160 the initial sqrt price of the pool as a Q64.96

mint

  function mint(
    address recipient,
    int24 tickLower,
    int24 tickUpper,
    uint128 amount,
    bytes data
  ) external override lock returns (uint256 amount0, uint256 amount1)

Adds liquidity for the given recipient.

tickLower will be the lower tick for the position.

tickUpper will be the upper tick for the position.

If the tick is outside of this range, this Position will not collect fees.

Parameters:

Name Type Description
recipient address The address for which the liquidity will be created
tickLower int24 The lower tick of the position in which to add liquidity
tickUpper int24 The upper tick of the position in which to add liquidity
amount uint128 The amount of liquidity to mint
data bytes Any data that should be passed through to the callback

Return Values:

Name Type Description
amount0 uint256 The amount of token0 that was paid to mint the given amount of liquidity. Matches the value in the callback
amount1 uint256 The amount of token1 that was paid to mint the given amount of liquidity. Matches the value in the callback

collect

  function collect(
    address recipient,
    int24 tickLower,
    int24 tickUpper,
    uint128 amount0Requested,
    uint128 amount1Requested
  ) external override lock returns (uint128 amount0, uint128 amount1)

Collects fees owed to a position.

Does not recompute fees earned, which must be done either via mint or burn.

Collect must be called by the Position NFT owner. To withdraw only token0 or only token1, amount0Requested or amount1Requested may be set to zero. To withdraw all tokens owed, caller may pass any value greater than the actual tokens owed, e.g. type(uint128).max. Tokens owed may be from accumulated swap fees or burned liquidity.

Parameters:

Name Type Description
recipient address The address which should receive the fees collected
tickLower int24 The lower tick of the position for which to collect fees
tickUpper int24 The upper tick of the position for which to collect fees
amount0Requested uint128 How much token0 should be withdrawn from the fees owed
amount1Requested uint128 How much token1 should be withdrawn from the fees owed

Return Values:

Name Type Description
amount0 uint128 The amount of fees collected in token0
amount1 uint128 The amount of fees collected in token1

burn

  function burn(
    int24 tickLower,
    int24 tickUpper,
    uint128 amount
  ) external override lock returns (uint256 amount0, uint256 amount1)

Burn liquidity from the sender. collect must be called after burn to receive liquidity removed from the Position NFT.

noDelegateCall is applied indirectly via _modifyPosition

Parameters:

Name Type Description
tickLower int24 The lower tick of the position for which to burn liquidity
tickUpper int24 The upper tick of the position for which to burn liquidity
amount uint128 How much liquidity to burn

Return Values:

Name Type Description
amount0 uint256 The amount of token0 sent to the recipient
amount1 uint256 The amount of token1 sent to the recipient

swap

  function swap(
    address recipient,
    bool zeroForOne,
    int256 amountSpecified,
    uint160 sqrtPriceLimitX96,
    bytes data
  ) external override noDelegateCall returns (int256 amount0, int256 amount1)

Swap token0 for token1, or token1 for token0

The caller of this method receives a callback in the form of IOceanbookV1SwapCallback. This will ensure that the user interacted with a genuine Oceanbook v1 pool.

Parameters:

Name Type Description
recipient address The address to receive the output of the swap
zeroForOne bool The direction of the swap, true for token0 to token1, false for token1 to token0
amountSpecified int256 The amount of the swap, which implicitly configures the swap as exact input (positive), or exact output (negative)
sqrtPriceLimitX96 uint160 The Q64.96 sqrt price limit. If zero for one, the price cannot be less than this value after the swap. If one for zero, the price cannot be greater than this value after the swap
data bytes Any data to be passed through to the callback

Return Values:

Name Type Description
amount0 int256 The delta of the balance of token0 of the pool, exact when negative, minimum when positive
amount1 int256 The delta of the balance of token1 of the pool, exact when negative, minimum when positive

flash

  function flash(
    address recipient,
    uint256 amount0,
    uint256 amount1,
    bytes data
  ) external override lock noDelegateCall

Receive token0 and/or token1 and pay it back plus a fee of 0.1% (changeable by governance) in the callback.

The caller of this method receives a callback in the form of IPoolsharkV1FlashCallback.

Parameters:

Name Type Description
recipient address The address which will receive the token0 and token1 amounts
amount0 uint256 The amount of token0 to send
amount1 uint256 The amount of token1 to send
data bytes Any data to be passed through to the callback

setFeeProtocol

  function setFeeProtocol(
    uint8 feeProtocol0,
    uint8 feeProtocol1
  ) external override lock onlyFactoryOwner

Set the denominator of the protocol's % share of the fees

Parameters:

Name Type Description
feeProtocol0 uint8 new protocol fee for token0 of the pool
feeProtocol1 uint8 new protocol fee for token1 of the pool

collectProtocol

  function collectProtocol(
    address recipient,
    uint128 amount0Requested,
    uint128 amount1Requested
  ) external override lock onlyFactoryOwner returns (uint128 amount0, uint128 amount1)

Collect the protocol fee accrued to the pool

Parameters:

Name Type Description
recipient address The address to which collected protocol fees should be sent
amount0Requested uint128 The maximum amount of token0 to send, can be 0 to collect fees in only token1
amount1Requested uint128 The maximum amount of token1 to send, can be 0 to collect fees in only token0

Return Values:

Name Type Description
amount0 uint128 The protocol fee collected in token0
amount1 uint128 The protocol fee collected in token1