DynamicSlippageChecker

{{
  "language": "Solidity",
  "sources": {
    "src/deps/milkman/pricecheckers/DynamicSlippageChecker.sol": {
      "content": "// SPDX-License-Identifier: LGPL-3.0-or-later
pragma solidity 0.8.28;

import { IPriceChecker } from "src/interfaces/deps/milkman/IPriceChecker.sol";
import { IExpectedOutCalculator } from "src/interfaces/deps/milkman/IExpectedOutCalculator.sol";

/// @notice Dynamic slippage checker that evaluates solver quotes against an expected output.
/// @dev Ported from Milkman with Solidity 0.8 semantics and Cove-specific layout.
contract DynamicSlippageChecker is IPriceChecker {
    string public NAME;
    IExpectedOutCalculator public immutable EXPECTED_OUT_CALCULATOR;

    uint256 internal constant MAX_BPS = 10_000;

    constructor(string memory name_, address expectedOutCalculator) {
        NAME = name_;
        EXPECTED_OUT_CALCULATOR = IExpectedOutCalculator(expectedOutCalculator);
    }

    function checkPrice(
        uint256 amountIn,
        address fromToken,
        address toToken,
        uint256,
        uint256 minOut,
        bytes calldata data
    )
        external
        view
        override
        returns (bool)
    {
        (uint256 allowedSlippageBps, bytes memory extraData) = abi.decode(data, (uint256, bytes));

        uint256 expectedOut = EXPECTED_OUT_CALCULATOR.getExpectedOut(amountIn, fromToken, toToken, extraData);

        return minOut > (expectedOut * (MAX_BPS - allowedSlippageBps)) / MAX_BPS;
    }
}
"
    },
    "src/interfaces/deps/milkman/IPriceChecker.sol": {
      "content": "// SPDX-License-Identifier: LGPL-3.0-or-later
pragma solidity 0.8.28;

/// @title IPriceChecker
/// @notice Interface for price checker contracts used by Milkman to validate swaps
interface IPriceChecker {
    /// @notice Check if a swap price is acceptable
    /// @param amountIn The amount of input tokens (including fee)
    /// @param fromToken The input token address
    /// @param toToken The output token address
    /// @param feeAmount The fee amount in input tokens
    /// @param minOut The minimum output amount from the solver
    /// @param data Additional data for price checking
    /// @return True if the price is acceptable
    function checkPrice(
        uint256 amountIn,
        address fromToken,
        address toToken,
        uint256 feeAmount,
        uint256 minOut,
        bytes calldata data
    ) external view returns (bool);
}"
    },
    "src/interfaces/deps/milkman/IExpectedOutCalculator.sol": {
      "content": "// SPDX-License-Identifier: LGPL-3.0-or-later
pragma solidity 0.8.28;

interface IExpectedOutCalculator {
    function getExpectedOut(uint256 amountIn, address fromToken, address toToken, bytes calldata data)
        external
        view
        returns (uint256);
}
"
    }
  },
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      "appendCBOR": true
    },
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    "viaIR": true
  }
}}