# IAlgebraSwapCallback Callback for IAlgebraPoolActions#swap Any contract that calls IAlgebraPoolActions#swap must implement this interface *Developer note: Credit to Uniswap Labs under GPL-2.0-or-later license: * ## Functions ### algebraSwapCallback `function algebraSwapCallback(int256 amount0Delta, int256 amount1Delta, bytes data) external` external Called to \`msg.sender\` after executing a swap via IAlgebraPool#swap. *Developer note: In the implementation you must pay the pool tokens owed for the swap. The caller of this method must be checked to be a AlgebraPool deployed by the canonical AlgebraFactory. amount0Delta and amount1Delta can both be 0 if no tokens were swapped.* | Name | Type | Description | | ------------------------------------------------------------------------------------------- | ------ | ------------------------------------------------------------------------------------------- | | amount0Delta | int256 | The amount of token0 that was sent (negative) or must be received (positive) by the pool by | | the end of the swap. If positive, the callback must send that amount of token0 to the pool. | | | | amount1Delta | int256 | The amount of token1 that was sent (negative) or must be received (positive) by the pool by | | the end of the swap. If positive, the callback must send that amount of token1 to the pool. | | | | data | bytes | Any data passed through by the caller via the IAlgebraPoolActions#swap call |