{
    "Function": "_delegateSwap",
    "File": "contracts/routers/StrategyRouter.sol",
    "Parent Contracts": [
        "contracts/helpers/StrategyTypes.sol",
        "contracts/interfaces/IStrategyRouter.sol"
    ],
    "High-Level Calls": [
        "IWhitelist",
        "IStrategyController"
    ],
    "Internal Calls": [
        "keccak256(bytes)",
        "delegatecall(uint256,uint256,uint256,uint256,uint256,uint256)",
        "mload(uint256)",
        "gasleft()",
        "abi.encodeWithSelector()",
        "mload(uint256)",
        "returndatacopy(uint256,uint256,uint256)",
        "require(bool,string)",
        "returndatasize()",
        "revert(uint256,uint256)"
    ],
    "Library Calls": [],
    "Low-Level Calls": [],
    "Code": "function _delegateSwap(\n        address adapter,\n        uint256 amount,\n        uint256 expected,\n        address tokenIn,\n        address tokenOut,\n        address from,\n        address to\n    ) internal {\n        require(controller.whitelist().approved(adapter), \"Not approved\");\n        bytes memory swapData =\n            abi.encodeWithSelector(\n                bytes4(\n                    keccak256(\"swap(uint256,uint256,address,address,address,address)\")\n                ),\n                amount,\n                expected,\n                tokenIn,\n                tokenOut,\n                from,\n                to\n            );\n        uint256 txGas = gasleft();\n        bool success;\n        assembly {\n            success := delegatecall(txGas, adapter, add(swapData, 0x20), mload(swapData), 0, 0)\n        }\n        if (!success) {\n            assembly {\n                let ptr := mload(0x40)\n                let size := returndatasize()\n                returndatacopy(ptr, 0, size)\n                revert(ptr, size)\n            }\n        }\n    }"
}