# StartupGovernor [Git Source](https://github.com/EntreDevelopers-Lab-Inc/Mezz-Companies/blob/f7a3e84e3dd5bb33c4bd7f77283983f9e8ba20b2/src/core/governance/startup/StartupGovernor.sol) **Inherits:** MezzGovernor, MezzEIP712, NoncesUpgradeable, IStartupGovernor **Author:** Daniel Yamagata A governance contract that enables the execution of arbitrary transactions by a super-majority of a treasury's signers. A super majority is counted as two-thirds of the signers rounded upwards. Below is a table with a few examples. | Signers | Super Majority | | ------- | -------------- | | 2 | 2 | | 3 | 2 | | 4 | 3 | | 5 | 4 | | 6 | 4 | *The execution of transactions requires an arbitrary deadline. If this deadline passes, the transaction will revert even if provided the correct number of signatures.* ## State Variables ### EXECUTE\_TYPEHASH ```solidity bytes32 public constant EXECUTE_TYPEHASH = keccak256("Execute(address target,uint256 value,bytes data,uint256 deadline,uint256 nonce)"); ``` ## Functions ### constructor ```solidity constructor(address _mezzHub, address _mezzMigrator) MezzGovernor(_mezzHub, _mezzMigrator); ``` ### init Intializes the Governor's state ```solidity function init(address initTreasury, bytes memory) external virtual override initializer; ``` **Parameters** | Name | Type | Description | | -------------- | --------- | ------------------------------------------------------------- | | `initTreasury` | `address` | The address of the Treasury that the Governor is in charge of | | `` | `bytes` | | ### \_\_Startup\_Governor\_init *The 'params' argument is maintained in case future versions require additional initialization parameters* ```solidity function __Startup_Governor_init(address initTreasury, bytes memory) internal virtual onlyInitializing; ``` ### executeTx Executes an arbitrary transaction. Requires a super majority of board members to sign off *Signatures must be packed in ascending order of the public addresses of the signers and must be packed into a single variable.* ```solidity function executeTx(address target, uint256 value, bytes memory data, bytes memory signatures, uint256 deadline) public virtual freezable returns (bytes memory); ``` **Parameters** | Name | Type | Description | | ------------ | --------- | ---------------------------------------------------------- | | `target` | `address` | The target address to execute the transaction on | | `value` | `uint256` | The amount of native currency to send with the transaction | | `data` | `bytes` | The calldata of the transaction | | `signatures` | `bytes` | The signatures of the board members | | `deadline` | `uint256` | | **Returns** | Name | Type | Description | | -------- | ------- | ---------------------------------- | | `` | `bytes` | The return data of the transaction | ### \_checkNSignatures *Validates the 'signatures' and the number of required signatures for 'safeCache', '\_hash', and '\_hashData'* ```solidity function _checkNSignatures(address safeCache, bytes32 dataHash, bytes memory signatures, uint256 requiredSigs) internal view virtual; ``` ### \_execute *Executes a call on a given 'target' with 'data' and 'value'. Reverts if the call fails or the target's code length is zero* ```solidity function _execute(address target, uint256 value, bytes memory data) internal virtual returns (bytes memory); ``` ### getExecuteTransactionHash Returns the transaction hash of the encoded execute data. *This hash is the one to be signed by a private key. Signatures should then be packed in ascending order by the public keys of the owners when calling executeTx()* ```solidity function getExecuteTransactionHash(DataTypes.StartupGovernorExecute memory execute) public view virtual returns (bytes32); ``` **Parameters** | Name | Type | Description | | --------- | ---------------------------------- | ----------------------------------------- | | `execute` | `DataTypes.StartupGovernorExecute` | The StartupGovernorExecute struct to hash | ### encodeExecuteData Encodes a StartupGovernorExecute struct hash following the EIP-191 signed typed data standard *Reference: * ```solidity function encodeExecuteData(DataTypes.StartupGovernorExecute memory execute) public view virtual returns (bytes memory); ``` **Parameters** | Name | Type | Description | | --------- | ---------------------------------- | ----------------------------------------------------------------- | | `execute` | `DataTypes.StartupGovernorExecute` | The StartupGovernorExecute struct to hash and subsequently encode | ### getExecuteStructHash Returns the hash of a StartupGovernorExecute struct following the EIP-712 encoding standards *Reference: * ```solidity function getExecuteStructHash(DataTypes.StartupGovernorExecute memory execute) public view virtual returns (bytes32); ``` **Parameters** | Name | Type | Description | | --------- | ---------------------------------- | ----------------------------------------- | | `execute` | `DataTypes.StartupGovernorExecute` | The StartupGovernorExecute struct to hash | ### coreId Returns the coreId of the implementation as a bytes32 *The core ID is the keccak256 hash of the contract name followed by a version under the following syntax: "mezzanine.coreId.ContractName.vX" For example, the core ID of the 2nd version of the Treasury would be the following: keccak256(abi.encodePacked("mezzanine.coreId.Treasury.v2"))* ```solidity function coreId() public pure virtual override(Credentialed, ICredentialed) returns (bytes32); ``` ### version Returns the version of the implementation as a uint256 ```solidity function version() public pure virtual override(Credentialed, ICredentialed) returns (uint256); ``` ### onERC721Received *Reference: * ```solidity function onERC721Received(address, address, uint256, bytes memory) public view virtual returns (bytes4); ``` ### onERC1155Received *Reference: * ```solidity function onERC1155Received(address, address, uint256, uint256, bytes memory) public view virtual returns (bytes4); ``` ### onERC1155BatchReceived *Reference: * ```solidity function onERC1155BatchReceived(address, address, uint256[] memory, uint256[] memory, bytes memory) public view virtual returns (bytes4); ``` ### supportsInterface *ERC165 support* ```solidity function supportsInterface(bytes4 interfaceId) public view virtual override(MezzEIP712, MezzUUPSUpgradeable, IERC165) returns (bool); ``` --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. 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