{
    "Function": "_checkApprovals",
    "File": "src/transformers/AutoCompound.sol",
    "Parent Contracts": [
        "lib/openzeppelin-contracts/contracts/security/ReentrancyGuard.sol",
        "lib/openzeppelin-contracts/contracts/utils/Multicall.sol",
        "src/automators/Automator.sol",
        "lib/openzeppelin-contracts/contracts/access/Ownable.sol",
        "lib/openzeppelin-contracts/contracts/utils/Context.sol",
        "src/utils/Swapper.sol",
        "src/interfaces/IErrors.sol",
        "lib/v3-core/contracts/interfaces/callback/IUniswapV3SwapCallback.sol"
    ],
    "High-Level Calls": [
        "IERC20",
        "SafeERC20",
        "IERC20",
        "SafeERC20"
    ],
    "Internal Calls": [],
    "Library Calls": [
        "safeApprove",
        "safeApprove"
    ],
    "Low-Level Calls": [],
    "Code": "function _checkApprovals(address token0, address token1) internal {\n        // approve tokens once if not yet approved - to save gas during compounds\n        uint256 allowance0 = IERC20(token0).allowance(address(this), address(nonfungiblePositionManager));\n        if (allowance0 == 0) {\n            SafeERC20.safeApprove(IERC20(token0), address(nonfungiblePositionManager), type(uint256).max);\n        }\n        uint256 allowance1 = IERC20(token1).allowance(address(this), address(nonfungiblePositionManager));\n        if (allowance1 == 0) {\n            SafeERC20.safeApprove(IERC20(token1), address(nonfungiblePositionManager), type(uint256).max);\n        }\n    }"
}