AlgebraPool

Algebra concentrated liquidity pool

This contract is responsible for liquidity positions, swaps and flashloans

Developer note: Version: Algebra V2

Functions

initialize

function initialize(uint160 initialPrice) external external

Sets the initial price for the pool Developer note: Price is represented as a sqrt(amountToken1/amountToken0) Q64.96 value Initialization should be done in one transaction with pool creation to avoid front-running

Name	Type	Description
initialPrice	uint160

mint

function mint(address sender, address recipient, int24 bottomTick, int24 topTick, uint128 liquidityDesired, bytes data) external returns (uint256 amount0, uint256 amount1, uint128 liquidityActual) external

Adds liquidity for the given recipient/bottomTick/topTick position Developer note: The caller of this method receives a callback in the form of IAlgebraMintCallback# AlgebraMintCallback in which they must pay any token0 or token1 owed for the liquidity. The amount of token0/token1 due depends on bottomTick, topTick, the amount of liquidity, and the current price. If bottomTick == topTick position is treated as a limit order

Name	Type	Description
sender	address	The address which will receive potential surplus of paid tokens
recipient	address	The address for which the liquidity will be created
bottomTick	int24	The lower tick of the position in which to add liquidity
topTick	int24	The upper tick of the position in which to add liquidity
liquidityDesired	uint128
data	bytes	Any data that should be passed through to the callback

Returns:

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
liquidityActual	uint128	The actual minted amount of liquidity

burn

function burn(int24 bottomTick, int24 topTick, uint128 amount) external returns (uint256 amount0, uint256 amount1) external

Burn liquidity from the sender and account tokens owed for the liquidity to the position Developer note: Can be used to trigger a recalculation of fees owed to a position by calling with an amount of 0 Fees must be collected separately via a call to #collect

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

Returns:

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

collect

function collect(address recipient, int24 bottomTick, int24 topTick, uint128 amount0Requested, uint128 amount1Requested) external returns (uint128 amount0, uint128 amount1) external

Collects tokens owed to a position Developer note: Does not recompute fees earned, which must be done either via mint or burn of any amount of liquidity. Collect must be called by the position 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.

Name	Type	Description
recipient	address	The address which should receive the fees collected
bottomTick	int24	The lower tick of the position for which to collect fees
topTick	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

Returns:

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

swap

function swap(address recipient, bool zeroToOne, int256 amountRequired, uint160 limitSqrtPrice, bytes data) external returns (int256 amount0, int256 amount1) external

Swap token0 for token1, or token1 for token0 Developer note: The caller of this method receives a callback in the form of IAlgebraSwapCallback#AlgebraSwapCallback

Name	Type	Description
recipient	address	The address to receive the output of the swap
zeroToOne	bool	The direction of the swap, true for token0 to token1, false for token1 to token0
amountRequired	int256	The amount of the swap, which implicitly configures the swap as exact input (positive), or exact output (negative)
limitSqrtPrice	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. If using the Router it should contain SwapRouter#SwapCallbackData

Returns:

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

swapSupportingFeeOnInputTokens

function swapSupportingFeeOnInputTokens(address sender, address recipient, bool zeroToOne, int256 amountRequired, uint160 limitSqrtPrice, bytes data) external returns (int256 amount0, int256 amount1) external

Swap token0 for token1, or token1 for token0 (tokens that have fee on transfer) Developer note: The caller of this method receives a callback in the form of IAlgebraSwapCallback#AlgebraSwapCallback

Name	Type	Description
sender	address	The address called this function (Comes from the Router)
recipient	address	The address to receive the output of the swap
zeroToOne	bool	The direction of the swap, true for token0 to token1, false for token1 to token0
amountRequired	int256	The amount of the swap, which implicitly configures the swap as exact input
limitSqrtPrice	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. If using the Router it should contain SwapRouter#SwapCallbackData

Returns:

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 external

Receive token0 and/or token1 and pay it back, plus a fee, in the callback Developer note: The caller of this method receives a callback in the form of IAlgebraFlashCallback#AlgebraFlashCallback All excess tokens paid in the callback are distributed to currently in-range liquidity providers as an additional fee. If there are no in-range liquidity providers, the fee will be transferred to the first active provider in the future

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

setCommunityFee

function setCommunityFee(uint8 newCommunityFee) external external

Set the community's % share of the fees. Cannot exceed 25% (250). Only factory owner or POOLS_ADMINISTRATOR_ROLE role

Name	Type	Description
newCommunityFee	uint8

setTickSpacing

function setTickSpacing(int24 newTickSpacing, int24 newTickspacingLimitOrders) external external

Set the new tick spacing values. Only factory owner or POOLS_ADMINISTRATOR_ROLE role

Name	Type	Description
newTickSpacing	int24	The new tick spacing value
newTickspacingLimitOrders	int24

setIncentive

function setIncentive(address newIncentiveAddress) external external

Sets an active incentive. Only farming

Name	Type	Description
newIncentiveAddress	address	The address associated with the incentive