{
    "Function": "castVoteBySig",
    "File": "contracts/governance/GovernorAlpha.sol",
    "Parent Contracts": [],
    "High-Level Calls": [],
    "Internal Calls": [
        "keccak256(bytes)",
        "require(bool,string)",
        "_castVote",
        "abi.encode()",
        "keccak256(bytes)",
        "keccak256(bytes)",
        "ecrecover(bytes32,uint8,bytes32,bytes32)",
        "abi.encode()",
        "abi.encodePacked()",
        "keccak256(bytes)",
        "getChainId"
    ],
    "Library Calls": [],
    "Low-Level Calls": [],
    "Code": "function castVoteBySig(\n        uint256 proposalId,\n        bool support,\n        uint8 v,\n        bytes32 r,\n        bytes32 s\n    ) public {\n        bytes32 domainSeparator = keccak256(\n            abi.encode(\n                DOMAIN_TYPEHASH,\n                keccak256(bytes(name)),\n                getChainId(),\n                address(this)\n            )\n        );\n\n        bytes32 structHash = keccak256(\n            abi.encode(BALLOT_TYPEHASH, proposalId, support)\n        );\n\n        bytes32 digest = keccak256(\n            abi.encodePacked(\"\\x19\\x01\", domainSeparator, structHash)\n        );\n\n        address signatory = ecrecover(digest, v, r, s);\n\n        require(\n            signatory != address(0),\n            \"GovernorAlpha::castVoteBySig: invalid signature\"\n        );\n\n        return _castVote(signatory, proposalId, support);\n    }"
}