68 lines
2.7 KiB
Solidity
68 lines
2.7 KiB
Solidity
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// SPDX-License-Identifier: GPL-2.0-or-later
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pragma solidity >=0.7.5;
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pragma abicoder v2;
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import '@uniswap/v3-core/contracts/interfaces/callback/IUniswapV3SwapCallback.sol';
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/// @title Router token swapping functionality
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/// @notice Functions for swapping tokens via Uniswap V3
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interface ISwapRouter is IUniswapV3SwapCallback {
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struct ExactInputSingleParams {
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address tokenIn;
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address tokenOut;
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uint24 fee;
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address recipient;
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uint256 deadline;
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uint256 amountIn;
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uint256 amountOutMinimum;
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uint160 sqrtPriceLimitX96;
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}
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/// @notice Swaps `amountIn` of one token for as much as possible of another token
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/// @param params The parameters necessary for the swap, encoded as `ExactInputSingleParams` in calldata
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/// @return amountOut The amount of the received token
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function exactInputSingle(ExactInputSingleParams calldata params) external payable returns (uint256 amountOut);
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struct ExactInputParams {
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bytes path;
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address recipient;
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uint256 deadline;
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uint256 amountIn;
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uint256 amountOutMinimum;
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}
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/// @notice Swaps `amountIn` of one token for as much as possible of another along the specified path
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/// @param params The parameters necessary for the multi-hop swap, encoded as `ExactInputParams` in calldata
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/// @return amountOut The amount of the received token
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function exactInput(ExactInputParams calldata params) external payable returns (uint256 amountOut);
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struct ExactOutputSingleParams {
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address tokenIn;
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address tokenOut;
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uint24 fee;
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address recipient;
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uint256 deadline;
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uint256 amountOut;
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uint256 amountInMaximum;
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uint160 sqrtPriceLimitX96;
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}
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/// @notice Swaps as little as possible of one token for `amountOut` of another token
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/// @param params The parameters necessary for the swap, encoded as `ExactOutputSingleParams` in calldata
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/// @return amountIn The amount of the input token
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function exactOutputSingle(ExactOutputSingleParams calldata params) external payable returns (uint256 amountIn);
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struct ExactOutputParams {
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bytes path;
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address recipient;
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uint256 deadline;
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uint256 amountOut;
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uint256 amountInMaximum;
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}
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/// @notice Swaps as little as possible of one token for `amountOut` of another along the specified path (reversed)
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/// @param params The parameters necessary for the multi-hop swap, encoded as `ExactOutputParams` in calldata
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/// @return amountIn The amount of the input token
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function exactOutput(ExactOutputParams calldata params) external payable returns (uint256 amountIn);
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}
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