{
    "Function": "permit",
    "File": "src/test/mocks/ERC20.sol",
    "Parent Contracts": [],
    "High-Level Calls": [],
    "Internal Calls": [
        "keccak256(bytes)",
        "require(bool,string)",
        "_approve",
        "require(bool,string)",
        "abi.encodePacked()",
        "ecrecover(bytes32,uint8,bytes32,bytes32)",
        "abi.encode()",
        "keccak256(bytes)"
    ],
    "Library Calls": [],
    "Low-Level Calls": [],
    "Code": "function permit(\n        address owner,\n        address spender,\n        uint256 value,\n        uint256 deadline,\n        uint8 v,\n        bytes32 r,\n        bytes32 s\n    ) external {\n        require(deadline >= block.timestamp, \"EXPIRED\");\n        bytes32 digest = keccak256(\n            abi.encodePacked(\n                \"\\x19\\x01\",\n                DOMAIN_SEPARATOR,\n                keccak256(\n                    abi.encode(\n                        PERMIT_TYPEHASH,\n                        owner,\n                        spender,\n                        value,\n                        nonces[owner]++,\n                        deadline\n                    )\n                )\n            )\n        );\n        address recoveredAddress = ecrecover(digest, v, r, s);\n        require(\n            recoveredAddress != address(0) && recoveredAddress == owner,\n            \"INVALID_SIGNATURE\"\n        );\n        _approve(owner, spender, value);\n    }"
}