{
    "Function": "_update",
    "File": "contracts/dex/pool/BasePool.sol",
    "Parent Contracts": [
        "node_modules/@openzeppelin/contracts/security/ReentrancyGuard.sol",
        "node_modules/@openzeppelin/contracts/access/Ownable.sol",
        "node_modules/@openzeppelin/contracts/token/ERC721/ERC721.sol",
        "node_modules/@openzeppelin/contracts/token/ERC721/extensions/IERC721Metadata.sol",
        "node_modules/@openzeppelin/contracts/token/ERC721/IERC721.sol",
        "node_modules/@openzeppelin/contracts/utils/introspection/ERC165.sol",
        "node_modules/@openzeppelin/contracts/utils/introspection/IERC165.sol",
        "node_modules/@openzeppelin/contracts/utils/Context.sol",
        "contracts/dex/utils/GasThrottle.sol",
        "contracts/shared/ProtocolConstants.sol",
        "contracts/interfaces/dex/pool/IBasePool.sol"
    ],
    "High-Level Calls": [
        "UQ112x112",
        "UQ112x112",
        "UQ112x112",
        "UQ112x112"
    ],
    "Internal Calls": [
        "require(bool,string)"
    ],
    "Library Calls": [
        "encode",
        "encode",
        "uqdiv",
        "uqdiv"
    ],
    "Low-Level Calls": [],
    "Code": "function _update(\r\n        uint256 balanceNative,\r\n        uint256 balanceForeign,\r\n        uint112 reserveNative,\r\n        uint112 reserveForeign\r\n    ) internal {\r\n        require(\r\n            balanceNative <= type(uint112).max &&\r\n                balanceForeign <= type(uint112).max,\r\n            \"BasePool::_update: Balance Overflow\"\r\n        );\r\n        uint32 blockTimestamp = uint32(block.timestamp % 2**32);\r\n        unchecked {\r\n            uint32 timeElapsed = blockTimestamp - _blockTimestampLast; // overflow is desired\r\n            if (timeElapsed > 0 && reserveNative != 0 && reserveForeign != 0) {\r\n                // * never overflows, and + overflow is desired\r\n                priceNativeCumulativeLast +=\r\n                    uint256(\r\n                        UQ112x112.encode(reserveForeign).uqdiv(reserveNative)\r\n                    ) *\r\n                    timeElapsed;\r\n                priceForeignCumulativeLast +=\r\n                    uint256(\r\n                        UQ112x112.encode(reserveNative).uqdiv(reserveForeign)\r\n                    ) *\r\n                    timeElapsed;\r\n            }\r\n        }\r\n        _reserveNative = uint112(balanceNative);\r\n        _reserveForeign = uint112(balanceForeign);\r\n        _blockTimestampLast = blockTimestamp;\r\n        emit Sync(balanceNative, balanceForeign);\r\n    }"
}