{
    "Function": "_beforeTokenTransfer",
    "File": "contracts/lib/openzeppelin-contracts/contracts/token/ERC20/extensions/ERC20Snapshot.sol",
    "Parent Contracts": [
        "contracts/lib/openzeppelin-contracts/contracts/token/ERC20/ERC20.sol",
        "contracts/lib/openzeppelin-contracts/contracts/token/ERC20/extensions/IERC20Metadata.sol",
        "contracts/lib/openzeppelin-contracts/contracts/token/ERC20/IERC20.sol",
        "contracts/lib/openzeppelin-contracts/contracts/utils/Context.sol"
    ],
    "High-Level Calls": [],
    "Internal Calls": [
        "_beforeTokenTransfer",
        "_updateTotalSupplySnapshot",
        "_updateAccountSnapshot",
        "_updateAccountSnapshot",
        "_updateTotalSupplySnapshot",
        "_updateAccountSnapshot",
        "_updateAccountSnapshot"
    ],
    "Library Calls": [],
    "Low-Level Calls": [],
    "Code": "function _beforeTokenTransfer(\n        address from,\n        address to,\n        uint256 amount\n    ) internal virtual override {\n        super._beforeTokenTransfer(from, to, amount);\n\n        if (from == address(0)) {\n            // mint\n            _updateAccountSnapshot(to);\n            _updateTotalSupplySnapshot();\n        } else if (to == address(0)) {\n            // burn\n            _updateAccountSnapshot(from);\n            _updateTotalSupplySnapshot();\n        } else {\n            // transfer\n            _updateAccountSnapshot(from);\n            _updateAccountSnapshot(to);\n        }\n    }"
}