{
    "Function": "slitherConstructorConstantVariables",
    "File": "contracts/StashFactory.sol",
    "Parent Contracts": [
        "node_modules/@openzeppelin/contracts/access/Ownable.sol",
        "node_modules/@openzeppelin/contracts/utils/Context.sol"
    ],
    "High-Level Calls": [],
    "Internal Calls": [],
    "Library Calls": [],
    "Low-Level Calls": [],
    "Code": "contract StashFactory is Ownable {\n    using Address for address;\n    using EnumerableSet for EnumerableSet.AddressSet;\n\n    bytes4 private constant rewarded_token = 0x16fa50b1; //rewarded_token()\n    bytes4 private constant reward_tokens = 0x54c49fe9; //reward_tokens(uint256)\n    bytes4 private constant rewards_receiver = 0x01ddabf1; //rewards_receiver(address)\n\n    address public rewardFactory;\n    EnumerableSet.AddressSet internal operators;\n\n    constructor(address _rewardFactory) {\n        rewardFactory = _rewardFactory;\n    }\n\n    function addOperator(address _newOperator) public onlyOwner {\n        operators.add(_newOperator);\n    }\n\n    function removeOperator(address _operator) public onlyOwner {\n        operators.remove(_operator);\n    }\n\n    //Create a stash contract for the given gauge.\n    //function calls are different depending on the version of curve gauges so determine which stash type is needed\n    function CreateStash(\n        uint256 _pid,\n        address _veAsset,\n        address _gauge,\n        address _staker,\n        uint256 _stashVersion\n    ) external returns (address) {\n        address operator = _msgSender();\n\n        require(operators.contains(operator), \"!authorized\");\n\n        if (_stashVersion == uint256(3) && IsV3(_gauge)) {\n            //v3\n            ExtraRewardStashV3 stash = new ExtraRewardStashV3(\n                _pid,\n                _veAsset,\n                operator,\n                _staker,\n                _gauge,\n                rewardFactory\n            );\n            return address(stash);\n        } else if (_stashVersion == uint256(1) && IsV1(_gauge)) {\n            //v1\n            ExtraRewardStashV1 stash = new ExtraRewardStashV1(\n                _pid,\n                operator,\n                _staker,\n                _gauge,\n                rewardFactory\n            );\n            return address(stash);\n        } else if (_stashVersion == uint256(2) && !IsV3(_gauge) && IsV2(_gauge)) {\n            //v2\n            ExtraRewardStashV2 stash = new ExtraRewardStashV2(\n                _pid,\n                _veAsset,\n                operator,\n                _staker,\n                _gauge,\n                rewardFactory\n            );\n            return address(stash);\n        }\n        bool isV1 = IsV1(_gauge);\n        bool isV2 = IsV2(_gauge);\n        bool isV3 = IsV3(_gauge);\n        require(!isV1 && !isV2 && !isV3, \"stash version mismatch\");\n        return address(0);\n    }\n\n    function IsV1(address _gauge) private returns (bool) {\n        bytes memory data = abi.encode(rewarded_token);\n        (bool success, ) = _gauge.call(data);\n        return success;\n    }\n\n    function IsV2(address _gauge) private returns (bool) {\n        bytes memory data = abi.encodeWithSelector(reward_tokens, uint256(0));\n        (bool success, ) = _gauge.call(data);\n        return success;\n    }\n\n    function IsV3(address _gauge) private returns (bool) {\n        bytes memory data = abi.encodeWithSelector(rewards_receiver, address(0));\n        (bool success, ) = _gauge.call(data);\n        return success;\n    }\n}"
}