22 lines
1.3 KiB
Solidity
22 lines
1.3 KiB
Solidity
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// SPDX-License-Identifier: GPL-2.0-or-later
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pragma solidity >=0.5.0;
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/// @title Callback for IUniswapV3PoolActions#swap
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/// @notice Any contract that calls IUniswapV3PoolActions#swap must implement this interface
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interface IUniswapV3SwapCallback {
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/// @notice Called to `msg.sender` after executing a swap via IUniswapV3Pool#swap.
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/// @dev In the implementation you must pay the pool tokens owed for the swap.
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/// The caller of this method must be checked to be a UniswapV3Pool deployed by the canonical UniswapV3Factory.
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/// amount0Delta and amount1Delta can both be 0 if no tokens were swapped.
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/// @param amount0Delta The amount of token0 that was sent (negative) or must be received (positive) by the pool by
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/// the end of the swap. If positive, the callback must send that amount of token0 to the pool.
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/// @param amount1Delta The amount of token1 that was sent (negative) or must be received (positive) by the pool by
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/// the end of the swap. If positive, the callback must send that amount of token1 to the pool.
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/// @param data Any data passed through by the caller via the IUniswapV3PoolActions#swap call
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function uniswapV3SwapCallback(
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int256 amount0Delta,
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int256 amount1Delta,
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bytes calldata data
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) external;
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}
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