You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
454 lines
16 KiB
454 lines
16 KiB
// SPDX-License-Identifier: MIT
|
|
// OpenZeppelin Contracts (last updated v5.1.0) (governance/IGovernor.sol)
|
|
|
|
pragma solidity ^0.8.20;
|
|
|
|
import {IERC165} from "../interfaces/IERC165.sol";
|
|
import {IERC6372} from "../interfaces/IERC6372.sol";
|
|
|
|
/**
|
|
* @dev Interface of the {Governor} core.
|
|
*
|
|
* NOTE: Event parameters lack the `indexed` keyword for compatibility with GovernorBravo events.
|
|
* Making event parameters `indexed` affects how events are decoded, potentially breaking existing indexers.
|
|
*/
|
|
interface IGovernor is IERC165, IERC6372 {
|
|
enum ProposalState {
|
|
Pending,
|
|
Active,
|
|
Canceled,
|
|
Defeated,
|
|
Succeeded,
|
|
Queued,
|
|
Expired,
|
|
Executed
|
|
}
|
|
|
|
/**
|
|
* @dev Empty proposal or a mismatch between the parameters length for a proposal call.
|
|
*/
|
|
error GovernorInvalidProposalLength(uint256 targets, uint256 calldatas, uint256 values);
|
|
|
|
/**
|
|
* @dev The vote was already cast.
|
|
*/
|
|
error GovernorAlreadyCastVote(address voter);
|
|
|
|
/**
|
|
* @dev Token deposits are disabled in this contract.
|
|
*/
|
|
error GovernorDisabledDeposit();
|
|
|
|
/**
|
|
* @dev The `account` is not a proposer.
|
|
*/
|
|
error GovernorOnlyProposer(address account);
|
|
|
|
/**
|
|
* @dev The `account` is not the governance executor.
|
|
*/
|
|
error GovernorOnlyExecutor(address account);
|
|
|
|
/**
|
|
* @dev The `proposalId` doesn't exist.
|
|
*/
|
|
error GovernorNonexistentProposal(uint256 proposalId);
|
|
|
|
/**
|
|
* @dev The current state of a proposal is not the required for performing an operation.
|
|
* The `expectedStates` is a bitmap with the bits enabled for each ProposalState enum position
|
|
* counting from right to left.
|
|
*
|
|
* NOTE: If `expectedState` is `bytes32(0)`, the proposal is expected to not be in any state (i.e. not exist).
|
|
* This is the case when a proposal that is expected to be unset is already initiated (the proposal is duplicated).
|
|
*
|
|
* See {Governor-_encodeStateBitmap}.
|
|
*/
|
|
error GovernorUnexpectedProposalState(uint256 proposalId, ProposalState current, bytes32 expectedStates);
|
|
|
|
/**
|
|
* @dev The voting period set is not a valid period.
|
|
*/
|
|
error GovernorInvalidVotingPeriod(uint256 votingPeriod);
|
|
|
|
/**
|
|
* @dev The `proposer` does not have the required votes to create a proposal.
|
|
*/
|
|
error GovernorInsufficientProposerVotes(address proposer, uint256 votes, uint256 threshold);
|
|
|
|
/**
|
|
* @dev The `proposer` is not allowed to create a proposal.
|
|
*/
|
|
error GovernorRestrictedProposer(address proposer);
|
|
|
|
/**
|
|
* @dev The vote type used is not valid for the corresponding counting module.
|
|
*/
|
|
error GovernorInvalidVoteType();
|
|
|
|
/**
|
|
* @dev The provided params buffer is not supported by the counting module.
|
|
*/
|
|
error GovernorInvalidVoteParams();
|
|
|
|
/**
|
|
* @dev Queue operation is not implemented for this governor. Execute should be called directly.
|
|
*/
|
|
error GovernorQueueNotImplemented();
|
|
|
|
/**
|
|
* @dev The proposal hasn't been queued yet.
|
|
*/
|
|
error GovernorNotQueuedProposal(uint256 proposalId);
|
|
|
|
/**
|
|
* @dev The proposal has already been queued.
|
|
*/
|
|
error GovernorAlreadyQueuedProposal(uint256 proposalId);
|
|
|
|
/**
|
|
* @dev The provided signature is not valid for the expected `voter`.
|
|
* If the `voter` is a contract, the signature is not valid using {IERC1271-isValidSignature}.
|
|
*/
|
|
error GovernorInvalidSignature(address voter);
|
|
|
|
/**
|
|
* @dev Emitted when a proposal is created.
|
|
*/
|
|
event ProposalCreated(
|
|
uint256 proposalId,
|
|
address proposer,
|
|
address[] targets,
|
|
uint256[] values,
|
|
string[] signatures,
|
|
bytes[] calldatas,
|
|
uint256 voteStart,
|
|
uint256 voteEnd,
|
|
string description
|
|
);
|
|
|
|
/**
|
|
* @dev Emitted when a proposal is queued.
|
|
*/
|
|
event ProposalQueued(uint256 proposalId, uint256 etaSeconds);
|
|
|
|
/**
|
|
* @dev Emitted when a proposal is executed.
|
|
*/
|
|
event ProposalExecuted(uint256 proposalId);
|
|
|
|
/**
|
|
* @dev Emitted when a proposal is canceled.
|
|
*/
|
|
event ProposalCanceled(uint256 proposalId);
|
|
|
|
/**
|
|
* @dev Emitted when a vote is cast without params.
|
|
*
|
|
* Note: `support` values should be seen as buckets. Their interpretation depends on the voting module used.
|
|
*/
|
|
event VoteCast(address indexed voter, uint256 proposalId, uint8 support, uint256 weight, string reason);
|
|
|
|
/**
|
|
* @dev Emitted when a vote is cast with params.
|
|
*
|
|
* Note: `support` values should be seen as buckets. Their interpretation depends on the voting module used.
|
|
* `params` are additional encoded parameters. Their interpretation also depends on the voting module used.
|
|
*/
|
|
event VoteCastWithParams(
|
|
address indexed voter,
|
|
uint256 proposalId,
|
|
uint8 support,
|
|
uint256 weight,
|
|
string reason,
|
|
bytes params
|
|
);
|
|
|
|
/**
|
|
* @notice module:core
|
|
* @dev Name of the governor instance (used in building the EIP-712 domain separator).
|
|
*/
|
|
function name() external view returns (string memory);
|
|
|
|
/**
|
|
* @notice module:core
|
|
* @dev Version of the governor instance (used in building the EIP-712 domain separator). Default: "1"
|
|
*/
|
|
function version() external view returns (string memory);
|
|
|
|
/**
|
|
* @notice module:voting
|
|
* @dev A description of the possible `support` values for {castVote} and the way these votes are counted, meant to
|
|
* be consumed by UIs to show correct vote options and interpret the results. The string is a URL-encoded sequence of
|
|
* key-value pairs that each describe one aspect, for example `support=bravo&quorum=for,abstain`.
|
|
*
|
|
* There are 2 standard keys: `support` and `quorum`.
|
|
*
|
|
* - `support=bravo` refers to the vote options 0 = Against, 1 = For, 2 = Abstain, as in `GovernorBravo`.
|
|
* - `quorum=bravo` means that only For votes are counted towards quorum.
|
|
* - `quorum=for,abstain` means that both For and Abstain votes are counted towards quorum.
|
|
*
|
|
* If a counting module makes use of encoded `params`, it should include this under a `params` key with a unique
|
|
* name that describes the behavior. For example:
|
|
*
|
|
* - `params=fractional` might refer to a scheme where votes are divided fractionally between for/against/abstain.
|
|
* - `params=erc721` might refer to a scheme where specific NFTs are delegated to vote.
|
|
*
|
|
* NOTE: The string can be decoded by the standard
|
|
* https://developer.mozilla.org/en-US/docs/Web/API/URLSearchParams[`URLSearchParams`]
|
|
* JavaScript class.
|
|
*/
|
|
// solhint-disable-next-line func-name-mixedcase
|
|
function COUNTING_MODE() external view returns (string memory);
|
|
|
|
/**
|
|
* @notice module:core
|
|
* @dev Hashing function used to (re)build the proposal id from the proposal details.
|
|
*
|
|
* NOTE: For all off-chain and external calls, use {getProposalId}.
|
|
*/
|
|
function hashProposal(
|
|
address[] memory targets,
|
|
uint256[] memory values,
|
|
bytes[] memory calldatas,
|
|
bytes32 descriptionHash
|
|
) external pure returns (uint256);
|
|
|
|
/**
|
|
* @notice module:core
|
|
* @dev Function used to get the proposal id from the proposal details.
|
|
*/
|
|
function getProposalId(
|
|
address[] memory targets,
|
|
uint256[] memory values,
|
|
bytes[] memory calldatas,
|
|
bytes32 descriptionHash
|
|
) external view returns (uint256);
|
|
|
|
/**
|
|
* @notice module:core
|
|
* @dev Current state of a proposal, following Compound's convention
|
|
*/
|
|
function state(uint256 proposalId) external view returns (ProposalState);
|
|
|
|
/**
|
|
* @notice module:core
|
|
* @dev The number of votes required in order for a voter to become a proposer.
|
|
*/
|
|
function proposalThreshold() external view returns (uint256);
|
|
|
|
/**
|
|
* @notice module:core
|
|
* @dev Timepoint used to retrieve user's votes and quorum. If using block number (as per Compound's Comp), the
|
|
* snapshot is performed at the end of this block. Hence, voting for this proposal starts at the beginning of the
|
|
* following block.
|
|
*/
|
|
function proposalSnapshot(uint256 proposalId) external view returns (uint256);
|
|
|
|
/**
|
|
* @notice module:core
|
|
* @dev Timepoint at which votes close. If using block number, votes close at the end of this block, so it is
|
|
* possible to cast a vote during this block.
|
|
*/
|
|
function proposalDeadline(uint256 proposalId) external view returns (uint256);
|
|
|
|
/**
|
|
* @notice module:core
|
|
* @dev The account that created a proposal.
|
|
*/
|
|
function proposalProposer(uint256 proposalId) external view returns (address);
|
|
|
|
/**
|
|
* @notice module:core
|
|
* @dev The time when a queued proposal becomes executable ("ETA"). Unlike {proposalSnapshot} and
|
|
* {proposalDeadline}, this doesn't use the governor clock, and instead relies on the executor's clock which may be
|
|
* different. In most cases this will be a timestamp.
|
|
*/
|
|
function proposalEta(uint256 proposalId) external view returns (uint256);
|
|
|
|
/**
|
|
* @notice module:core
|
|
* @dev Whether a proposal needs to be queued before execution.
|
|
*/
|
|
function proposalNeedsQueuing(uint256 proposalId) external view returns (bool);
|
|
|
|
/**
|
|
* @notice module:user-config
|
|
* @dev Delay, between the proposal is created and the vote starts. The unit this duration is expressed in depends
|
|
* on the clock (see ERC-6372) this contract uses.
|
|
*
|
|
* This can be increased to leave time for users to buy voting power, or delegate it, before the voting of a
|
|
* proposal starts.
|
|
*
|
|
* NOTE: While this interface returns a uint256, timepoints are stored as uint48 following the ERC-6372 clock type.
|
|
* Consequently this value must fit in a uint48 (when added to the current clock). See {IERC6372-clock}.
|
|
*/
|
|
function votingDelay() external view returns (uint256);
|
|
|
|
/**
|
|
* @notice module:user-config
|
|
* @dev Delay between the vote start and vote end. The unit this duration is expressed in depends on the clock
|
|
* (see ERC-6372) this contract uses.
|
|
*
|
|
* NOTE: The {votingDelay} can delay the start of the vote. This must be considered when setting the voting
|
|
* duration compared to the voting delay.
|
|
*
|
|
* NOTE: This value is stored when the proposal is submitted so that possible changes to the value do not affect
|
|
* proposals that have already been submitted. The type used to save it is a uint32. Consequently, while this
|
|
* interface returns a uint256, the value it returns should fit in a uint32.
|
|
*/
|
|
function votingPeriod() external view returns (uint256);
|
|
|
|
/**
|
|
* @notice module:user-config
|
|
* @dev Minimum number of cast voted required for a proposal to be successful.
|
|
*
|
|
* NOTE: The `timepoint` parameter corresponds to the snapshot used for counting vote. This allows to scale the
|
|
* quorum depending on values such as the totalSupply of a token at this timepoint (see {ERC20Votes}).
|
|
*/
|
|
function quorum(uint256 timepoint) external view returns (uint256);
|
|
|
|
/**
|
|
* @notice module:reputation
|
|
* @dev Voting power of an `account` at a specific `timepoint`.
|
|
*
|
|
* Note: this can be implemented in a number of ways, for example by reading the delegated balance from one (or
|
|
* multiple), {ERC20Votes} tokens.
|
|
*/
|
|
function getVotes(address account, uint256 timepoint) external view returns (uint256);
|
|
|
|
/**
|
|
* @notice module:reputation
|
|
* @dev Voting power of an `account` at a specific `timepoint` given additional encoded parameters.
|
|
*/
|
|
function getVotesWithParams(
|
|
address account,
|
|
uint256 timepoint,
|
|
bytes memory params
|
|
) external view returns (uint256);
|
|
|
|
/**
|
|
* @notice module:voting
|
|
* @dev Returns whether `account` has cast a vote on `proposalId`.
|
|
*/
|
|
function hasVoted(uint256 proposalId, address account) external view returns (bool);
|
|
|
|
/**
|
|
* @dev Create a new proposal. Vote start after a delay specified by {IGovernor-votingDelay} and lasts for a
|
|
* duration specified by {IGovernor-votingPeriod}.
|
|
*
|
|
* Emits a {ProposalCreated} event.
|
|
*
|
|
* NOTE: The state of the Governor and `targets` may change between the proposal creation and its execution.
|
|
* This may be the result of third party actions on the targeted contracts, or other governor proposals.
|
|
* For example, the balance of this contract could be updated or its access control permissions may be modified,
|
|
* possibly compromising the proposal's ability to execute successfully (e.g. the governor doesn't have enough
|
|
* value to cover a proposal with multiple transfers).
|
|
*/
|
|
function propose(
|
|
address[] memory targets,
|
|
uint256[] memory values,
|
|
bytes[] memory calldatas,
|
|
string memory description
|
|
) external returns (uint256 proposalId);
|
|
|
|
/**
|
|
* @dev Queue a proposal. Some governors require this step to be performed before execution can happen. If queuing
|
|
* is not necessary, this function may revert.
|
|
* Queuing a proposal requires the quorum to be reached, the vote to be successful, and the deadline to be reached.
|
|
*
|
|
* Emits a {ProposalQueued} event.
|
|
*/
|
|
function queue(
|
|
address[] memory targets,
|
|
uint256[] memory values,
|
|
bytes[] memory calldatas,
|
|
bytes32 descriptionHash
|
|
) external returns (uint256 proposalId);
|
|
|
|
/**
|
|
* @dev Execute a successful proposal. This requires the quorum to be reached, the vote to be successful, and the
|
|
* deadline to be reached. Depending on the governor it might also be required that the proposal was queued and
|
|
* that some delay passed.
|
|
*
|
|
* Emits a {ProposalExecuted} event.
|
|
*
|
|
* NOTE: Some modules can modify the requirements for execution, for example by adding an additional timelock.
|
|
*/
|
|
function execute(
|
|
address[] memory targets,
|
|
uint256[] memory values,
|
|
bytes[] memory calldatas,
|
|
bytes32 descriptionHash
|
|
) external payable returns (uint256 proposalId);
|
|
|
|
/**
|
|
* @dev Cancel a proposal. A proposal is cancellable by the proposer, but only while it is Pending state, i.e.
|
|
* before the vote starts.
|
|
*
|
|
* Emits a {ProposalCanceled} event.
|
|
*/
|
|
function cancel(
|
|
address[] memory targets,
|
|
uint256[] memory values,
|
|
bytes[] memory calldatas,
|
|
bytes32 descriptionHash
|
|
) external returns (uint256 proposalId);
|
|
|
|
/**
|
|
* @dev Cast a vote
|
|
*
|
|
* Emits a {VoteCast} event.
|
|
*/
|
|
function castVote(uint256 proposalId, uint8 support) external returns (uint256 balance);
|
|
|
|
/**
|
|
* @dev Cast a vote with a reason
|
|
*
|
|
* Emits a {VoteCast} event.
|
|
*/
|
|
function castVoteWithReason(
|
|
uint256 proposalId,
|
|
uint8 support,
|
|
string calldata reason
|
|
) external returns (uint256 balance);
|
|
|
|
/**
|
|
* @dev Cast a vote with a reason and additional encoded parameters
|
|
*
|
|
* Emits a {VoteCast} or {VoteCastWithParams} event depending on the length of params.
|
|
*/
|
|
function castVoteWithReasonAndParams(
|
|
uint256 proposalId,
|
|
uint8 support,
|
|
string calldata reason,
|
|
bytes memory params
|
|
) external returns (uint256 balance);
|
|
|
|
/**
|
|
* @dev Cast a vote using the voter's signature, including ERC-1271 signature support.
|
|
*
|
|
* Emits a {VoteCast} event.
|
|
*/
|
|
function castVoteBySig(
|
|
uint256 proposalId,
|
|
uint8 support,
|
|
address voter,
|
|
bytes memory signature
|
|
) external returns (uint256 balance);
|
|
|
|
/**
|
|
* @dev Cast a vote with a reason and additional encoded parameters using the voter's signature,
|
|
* including ERC-1271 signature support.
|
|
*
|
|
* Emits a {VoteCast} or {VoteCastWithParams} event depending on the length of params.
|
|
*/
|
|
function castVoteWithReasonAndParamsBySig(
|
|
uint256 proposalId,
|
|
uint8 support,
|
|
address voter,
|
|
string calldata reason,
|
|
bytes memory params,
|
|
bytes memory signature
|
|
) external returns (uint256 balance);
|
|
}
|
|
|