{
    "Function": "propose",
    "File": "contracts/lib/openzeppelin-contracts/contracts/governance/Governor.sol",
    "Parent Contracts": [
        "contracts/lib/openzeppelin-contracts/contracts/token/ERC1155/IERC1155Receiver.sol",
        "contracts/lib/openzeppelin-contracts/contracts/token/ERC721/IERC721Receiver.sol",
        "contracts/lib/openzeppelin-contracts/contracts/governance/IGovernor.sol",
        "contracts/lib/openzeppelin-contracts/contracts/utils/cryptography/draft-EIP712.sol",
        "contracts/lib/openzeppelin-contracts/contracts/utils/introspection/ERC165.sol",
        "contracts/lib/openzeppelin-contracts/contracts/utils/introspection/IERC165.sol",
        "contracts/lib/openzeppelin-contracts/contracts/utils/Context.sol"
    ],
    "High-Level Calls": [
        "SafeCast",
        "SafeCast",
        "Timers",
        "SafeCast",
        "Timers",
        "Timers"
    ],
    "Internal Calls": [
        "require(bool,string)",
        "keccak256(bytes)",
        "require(bool,string)",
        "_msgSender",
        "getVotes",
        "proposalThreshold",
        "require(bool,string)",
        "votingDelay",
        "votingPeriod",
        "hashProposal",
        "_msgSender",
        "require(bool,string)",
        "require(bool,string)"
    ],
    "Library Calls": [
        "toUint64",
        "isUnset",
        "setDeadline",
        "toUint64",
        "setDeadline",
        "toUint64"
    ],
    "Low-Level Calls": [],
    "Code": "function propose(\n        address[] memory targets,\n        uint256[] memory values,\n        bytes[] memory calldatas,\n        string memory description\n    ) public virtual override returns (uint256) {\n        require(\n            getVotes(_msgSender(), block.number - 1) >= proposalThreshold(),\n            \"Governor: proposer votes below proposal threshold\"\n        );\n\n        uint256 proposalId = hashProposal(targets, values, calldatas, keccak256(bytes(description)));\n\n        require(targets.length == values.length, \"Governor: invalid proposal length\");\n        require(targets.length == calldatas.length, \"Governor: invalid proposal length\");\n        require(targets.length > 0, \"Governor: empty proposal\");\n\n        ProposalCore storage proposal = _proposals[proposalId];\n        require(proposal.voteStart.isUnset(), \"Governor: proposal already exists\");\n\n        uint64 snapshot = block.number.toUint64() + votingDelay().toUint64();\n        uint64 deadline = snapshot + votingPeriod().toUint64();\n\n        proposal.voteStart.setDeadline(snapshot);\n        proposal.voteEnd.setDeadline(deadline);\n\n        emit ProposalCreated(\n            proposalId,\n            _msgSender(),\n            targets,\n            values,\n            new string[](targets.length),\n            calldatas,\n            snapshot,\n            deadline,\n            description\n        );\n\n        return proposalId;\n    }"
}