UniQuoteChecker

{{
  "language": "Solidity",
  "sources": {
    "EPICswap/demo1.sol": {
      "content": "// SPDX-License-Identifier: MIT\r
pragma solidity ^0.8.20;\r
\r
interface IV4Quoter {\r
    struct PoolKey {\r
        address currency0;\r
        address currency1;\r
        uint24 fee;\r
        int24 tickSpacing;\r
        address hooks;\r
    }\r
\r
    struct QuoteExactSingleParams {\r
        PoolKey poolKey;\r
        bool zeroForOne;\r
        uint128 exactAmount;\r
        bytes hookData;\r
    }\r
\r
    function quoteExactInputSingle(QuoteExactSingleParams memory params)\r
        external\r
        view\r
        returns (uint256 amountOut, uint256 gasEstimate);\r
}\r
\r
interface IV3Quoter {\r
    function quoteExactInputSingle(\r
        address tokenIn,\r
        address tokenOut,\r
        uint24 fee,\r
        uint256 amountIn,\r
        uint160 sqrtPriceLimitX96\r
    ) external view returns (uint256 amountOut);\r
}\r
\r
contract UniQuoteChecker {\r
    address public constant TOKEN_SELL = 0x94314a14Df63779c99C0764a30e0CD22fA78fC0E; // 要卖出的代币\r
    address public constant WETH       = 0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2;\r
    address public constant USDT       = 0xdAC17F958D2ee523a2206206994597C13D831ec7;\r
    address public constant ETH        = 0x0000000000000000000000000000000000000000;\r
\r
    address public constant V4_QUOTER  = 0x52F0E24D1c21C8A0cB1e5a5dD6198556BD9E1203;\r
    address public constant V3_QUOTER  = 0xb27308f9F90D607463bb33eA1BeBb41C27CE5AB6;\r
\r
    /// @notice 传入卖出数量 (sellAmount) 和 USDT 基准值 (usdtBaseline)，并附带 ETH\r
    function check(uint256 sellAmount) external view returns(uint256 usdtOut) {\r
        // 1. V4 查询 TOKEN_SELL -> ETH\r
        IV4Quoter.QuoteExactSingleParams memory params = IV4Quoter.QuoteExactSingleParams({\r
            poolKey: IV4Quoter.PoolKey({\r
                currency0: ETH,\r
                currency1: TOKEN_SELL,\r
                fee: 3000, // 0.3%\r
                tickSpacing: 60,\r
                hooks: address(0)\r
            }),\r
            zeroForOne: false, // TOKEN_SELL -> ETH\r
            exactAmount: uint128(sellAmount),\r
            hookData: ""\r
        });\r
\r
        (uint256 ethAmount, ) = IV4Quoter(V4_QUOTER).quoteExactInputSingle(params);\r
\r
        // 2. V3 查询 ETH -> USDT\r
        usdtOut = IV3Quoter(V3_QUOTER).quoteExactInputSingle(\r
            WETH,\r
            USDT,\r
            100, // 0.01%\r
            ethAmount,\r
            0\r
        );\r
\r
        // 3. 判断差值，如果条件不满足则回滚\r
        return usdtOut;\r
    }\r
}\r
"
    }
  },
  "settings": {
    "optimizer": {
      "enabled": false,
      "runs": 200
    },
    "outputSelection": {
      "*": {
        "*": [
          "evm.bytecode",
          "evm.deployedBytecode",
          "devdoc",
          "userdoc",
          "metadata",
          "abi"
        ]
      }
    },
    "remappings": []
  }
}}