{
    "Function": "_setReferral",
    "File": "contracts/TradingExtension.sol",
    "Parent Contracts": [
        "node_modules/@openzeppelin/contracts/access/Ownable.sol",
        "node_modules/@openzeppelin/contracts/utils/Context.sol"
    ],
    "High-Level Calls": [
        "IReferrals",
        "IReferrals",
        "IReferrals"
    ],
    "Internal Calls": [
        "onlyProtocol"
    ],
    "Library Calls": [],
    "Low-Level Calls": [],
    "Code": "function _setReferral(\n        bytes32 _referral,\n        address _trader\n    ) external onlyProtocol {\n        \n        if (_referral != bytes32(0)) {\n            if (referrals.getReferral(_referral) != address(0)) {\n                if (referrals.getReferred(_trader) == bytes32(0)) {\n                    referrals.setReferred(_trader, _referral);\n                }\n            }\n        }\n    }"
}