{
    "Function": "_swap",
    "File": "contracts/dex-v2/router/VaderRouterV2.sol",
    "Parent Contracts": [
        "node_modules/@openzeppelin/contracts/access/Ownable.sol",
        "node_modules/@openzeppelin/contracts/utils/Context.sol",
        "contracts/shared/ProtocolConstants.sol",
        "contracts/interfaces/dex-v2/router/IVaderRouterV2.sol"
    ],
    "High-Level Calls": [
        "IVaderPoolV2",
        "SafeERC20",
        "IVaderPoolV2",
        "IVaderPoolV2",
        "SafeERC20",
        "IVaderPoolV2"
    ],
    "Internal Calls": [
        "require(bool,string)",
        "require(bool,string)",
        "require(bool,string)",
        "require(bool,string)"
    ],
    "Library Calls": [
        "safeTransferFrom",
        "safeTransferFrom"
    ],
    "Low-Level Calls": [],
    "Code": "function _swap(\r\n        uint256 amountIn,\r\n        IERC20[] calldata path,\r\n        address to\r\n    ) private returns (uint256 amountOut) {\r\n        if (path.length == 3) {\r\n            require(\r\n                path[0] != path[1] &&\r\n                    path[1] == pool.nativeAsset() &&\r\n                    path[2] != path[1],\r\n                \"VaderRouterV2::_swap: Incorrect Path\"\r\n            );\r\n\r\n            path[0].safeTransferFrom(msg.sender, address(pool), amountIn);\r\n\r\n            return pool.doubleSwap(path[0], path[2], amountIn, to);\r\n        } else {\r\n            require(\r\n                path.length == 2,\r\n                \"VaderRouterV2::_swap: Incorrect Path Length\"\r\n            );\r\n            IERC20 _nativeAsset = nativeAsset;\r\n            require(path[0] != path[1], \"VaderRouterV2::_swap: Incorrect Path\");\r\n\r\n            path[0].safeTransferFrom(msg.sender, address(pool), amountIn);\r\n            if (path[0] == _nativeAsset) {\r\n                return pool.swap(path[1], amountIn, 0, to);\r\n            } else {\r\n                require(\r\n                    path[1] == _nativeAsset,\r\n                    \"VaderRouterV2::_swap: Incorrect Path\"\r\n                );\r\n                return pool.swap(path[0], 0, amountIn, to);\r\n            }\r\n        }\r\n    }"
}