{
    "Function": "swap",
    "File": "contracts/adapters/lending/AaveV2Adapter.sol",
    "Parent Contracts": [
        "contracts/adapters/BaseAdapter.sol",
        "contracts/interfaces/IBaseAdapter.sol"
    ],
    "High-Level Calls": [
        "ILendingPool",
        "IERC20",
        "IStrategyController",
        "IStrategy",
        "IAToken",
        "SafeERC20",
        "ILendingPoolAddressesProvider",
        "SafeERC20",
        "IAToken",
        "IStrategy",
        "ILendingPool",
        "ILendingPoolAddressesProvider"
    ],
    "Internal Calls": [
        "require(bool,string)",
        "require(bool,string)",
        "require(bool,string)",
        "_checkAToken",
        "require(bool,string)"
    ],
    "Library Calls": [
        "safeTransferFrom",
        "safeApprove"
    ],
    "Low-Level Calls": [],
    "Code": "function swap(\n        uint256 amount,\n        uint256 expected,\n        address tokenIn,\n        address tokenOut,\n        address from,\n        address to\n    ) public override {\n        require(tokenIn != tokenOut, \"Tokens cannot match\");\n        require(amount >= expected, \"Insufficient tokenOut amount\");\n        if (from != address(this))\n            IERC20(tokenIn).safeTransferFrom(from, address(this), amount);\n        if (_checkAToken(tokenOut)) {\n            require(IAToken(tokenOut).UNDERLYING_ASSET_ADDRESS() == tokenIn, \"Incompatible\");\n            address lendingPool = addressesProvider.getLendingPool();\n            IERC20(tokenIn).safeApprove(lendingPool, amount);\n            ILendingPool(lendingPool).deposit(tokenIn, amount, to, 0);\n            if (strategyController.initialized(to)) {\n                //Add as collateral if strategy supports debt\n                IStrategy strategy = IStrategy(to);\n                if (strategy.supportsDebt()) strategy.setCollateral(tokenIn);\n            }\n        } else {\n            require(IAToken(tokenIn).UNDERLYING_ASSET_ADDRESS() == tokenOut, \"Incompatible\");\n            uint256 balance = IERC20(tokenIn).balanceOf(address(this));\n            if (balance < amount) amount = balance; //Protoect against Aave's off-by-one rounding issue\n            ILendingPool(addressesProvider.getLendingPool()).withdraw(tokenOut, amount, to);\n        }\n    }"
}