Source Code
Overview
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| Transaction Hash |
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|---|---|---|---|---|---|---|---|---|---|
| Cast Vote | 75297796 | 954 days ago | IN | 0 ETH | 0.00007531 |
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Contract Name:
L2ArbitrumGovernor
Compiler Version
v0.8.16+commit.07a7930e
Optimization Enabled:
Yes with 20000 runs
Other Settings:
default evmVersion
Contract Source Code (Solidity Standard Json-Input format)
// SPDX-License-Identifier: Apache-2.0
pragma solidity 0.8.16;
import "@openzeppelin/contracts-upgradeable/governance/GovernorUpgradeable.sol";
import "@openzeppelin/contracts-upgradeable/governance/extensions/GovernorSettingsUpgradeable.sol";
import
"@openzeppelin/contracts-upgradeable/governance/extensions/GovernorVotesQuorumFractionUpgradeable.sol";
import
"@openzeppelin/contracts-upgradeable/governance/extensions/GovernorPreventLateQuorumUpgradeable.sol";
import
"@openzeppelin/contracts-upgradeable/governance/extensions/GovernorCountingSimpleUpgradeable.sol";
import "@openzeppelin/contracts-upgradeable/governance/extensions/GovernorVotesUpgradeable.sol";
import
"@openzeppelin/contracts-upgradeable/governance/extensions/GovernorTimelockControlUpgradeable.sol";
import "@openzeppelin/contracts-upgradeable/proxy/utils/Initializable.sol";
import "@openzeppelin/contracts-upgradeable/access/OwnableUpgradeable.sol";
/// @title L2ArbitrumGovernor
/// @notice Governance controls for the Arbitrum DAO
/// @dev Standard governor with some special functionality to avoid counting
/// votes of some excluded tokens. Also allows for an owner to set parameters by calling
/// relay.
contract L2ArbitrumGovernor is
Initializable,
GovernorSettingsUpgradeable,
GovernorCountingSimpleUpgradeable,
GovernorVotesUpgradeable,
GovernorTimelockControlUpgradeable,
GovernorVotesQuorumFractionUpgradeable,
GovernorPreventLateQuorumUpgradeable,
OwnableUpgradeable
{
/// @notice address for which votes will not be counted toward quorum
/// @dev A portion of the Arbitrum tokens will be held by entities (eg the treasury) that
/// are not eligible to vote. However, even if their voting/delegation is restricted their
/// tokens will still count towards the total supply, and will therefore affect the quorom.
/// Restricted addresses should be forced to delegate their votes to this special exclude
/// addresses which is not counted when calculating quorum
/// Example address that should be excluded: DAO treasury, foundation, unclaimed tokens,
/// burned tokens and swept (see TokenDistributor) tokens.
/// Note that Excluded Address is a readable name with no code of PK associated with it, and thus can't vote.
address public constant EXCLUDE_ADDRESS = address(0xA4b86);
constructor() {
_disableInitializers();
}
/// @param _token The token to read vote delegation from
/// @param _timelock A time lock for proposal execution
/// @param _owner The executor through which all upgrades should be finalised
/// @param _votingDelay The delay between a proposal submission and voting starts
/// @param _votingPeriod The period for which the vote lasts
/// @param _quorumNumerator The proportion of the circulating supply required to reach a quorum
/// @param _proposalThreshold The number of delegated votes required to create a proposal
/// @param _minPeriodAfterQuorum The minimum number of blocks available for voting after the quorum is reached
function initialize(
IVotesUpgradeable _token,
TimelockControllerUpgradeable _timelock,
address _owner,
uint256 _votingDelay,
uint256 _votingPeriod,
uint256 _quorumNumerator,
uint256 _proposalThreshold,
uint64 _minPeriodAfterQuorum
) external initializer {
__Governor_init("L2ArbitrumGovernor");
__GovernorSettings_init(_votingDelay, _votingPeriod, _proposalThreshold);
__GovernorCountingSimple_init();
__GovernorVotes_init(_token);
__GovernorTimelockControl_init(_timelock);
__GovernorVotesQuorumFraction_init(_quorumNumerator);
__GovernorPreventLateQuorum_init(_minPeriodAfterQuorum);
_transferOwnership(_owner);
}
/// @notice Allows the owner to make calls from the governor
/// @dev We want the owner to be able to upgrade settings and parametes on this Governor
/// however we can't use onlyGovernance as it requires calls originate from the governor
/// contract. The normal flow for onlyGovernance to work is to call execute on the governor
/// which will then call out to the _executor(), which will then call back in to the governor to set
/// a parameter. At the point of setting the parameter onlyGovernance is checked, and this includes
/// a check this call originated in the execute() function. The purpose of this is an added
/// safety measure that ensure that all calls originate at the governor, and if second entrypoint is
/// added to the _executor() contract, that new entrypoint will not be able to pass the onlyGovernance check.
/// You can read more about this in the comments on onlyGovernance()
/// This flow doesn't work for Arbitrum governance as we require an proposal on L2 to first
/// be relayed to L1, and then back again to L2 before calling into the governor to update
/// settings. This means that updating settings can't be done in a single transaction.
/// There are two potential solutions to this problem:
/// 1. Use a more persistent record that a specific upgrade is taking place. This adds
/// a lot of complexity, as we have multiple layers of calldata wrapping each other to
/// define the multiple transactions that occur in a round-trip upgrade. So safely recording
/// execution of the would be difficult and brittle.
/// 2. Override this protection and just ensure elsewhere that the executor only has the
/// the correct entrypoints and access control. We've gone for this option.
/// By overriding the relay function we allow the executor to make any call originating
/// from the governor, and by setting the _executor() to be the governor itself we can use the
/// relay function to call back into the governor to update settings e.g:
///
/// l2ArbitrumGovernor.relay(
/// address(l2ArbitrumGovernor),
/// 0,
/// abi.encodeWithSelector(l2ArbitrumGovernor.updateQuorumNumerator.selector, 4)
/// );
function relay(address target, uint256 value, bytes calldata data)
external
virtual
override
onlyOwner
{
AddressUpgradeable.functionCallWithValue(target, data, value);
}
/// @notice returns l2 executor address; used internally for onlyGovernance check
function _executor()
internal
view
override(GovernorTimelockControlUpgradeable, GovernorUpgradeable)
returns (address)
{
return address(this);
}
/// @notice Get "circulating" votes supply; i.e., total minus excluded vote exclude address.
function getPastCirculatingSupply(uint256 blockNumber) public view virtual returns (uint256) {
return
token.getPastTotalSupply(blockNumber) - token.getPastVotes(EXCLUDE_ADDRESS, blockNumber);
}
/// @notice Calculates the quorum size, excludes token delegated to the exclude address
function quorum(uint256 blockNumber)
public
view
override(IGovernorUpgradeable, GovernorVotesQuorumFractionUpgradeable)
returns (uint256)
{
return (getPastCirculatingSupply(blockNumber) * quorumNumerator(blockNumber))
/ quorumDenominator();
}
/// @inheritdoc GovernorVotesQuorumFractionUpgradeable
function quorumDenominator()
public
pure
override(GovernorVotesQuorumFractionUpgradeable)
returns (uint256)
{
// update to 10k to allow for higher precision
return 10_000;
}
// Overrides:
// @notice Votes required for proposal.
function proposalThreshold()
public
view
override(GovernorSettingsUpgradeable, GovernorUpgradeable)
returns (uint256)
{
return GovernorSettingsUpgradeable.proposalThreshold();
}
function state(uint256 proposalId)
public
view
override(GovernorUpgradeable, GovernorTimelockControlUpgradeable)
returns (ProposalState)
{
return GovernorTimelockControlUpgradeable.state(proposalId);
}
function _castVote(
uint256 proposalId,
address account,
uint8 support,
string memory reason,
bytes memory params
)
internal
override(GovernorUpgradeable, GovernorPreventLateQuorumUpgradeable)
returns (uint256)
{
return GovernorPreventLateQuorumUpgradeable._castVote(
proposalId, account, support, reason, params
);
}
function proposalDeadline(uint256 proposalId)
public
view
override(IGovernorUpgradeable, GovernorUpgradeable, GovernorPreventLateQuorumUpgradeable)
returns (uint256)
{
return GovernorPreventLateQuorumUpgradeable.proposalDeadline(proposalId);
}
function _execute(
uint256 proposalId,
address[] memory targets,
uint256[] memory values,
bytes[] memory calldatas,
bytes32 descriptionHash
) internal override(GovernorUpgradeable, GovernorTimelockControlUpgradeable) {
GovernorTimelockControlUpgradeable._execute(
proposalId, targets, values, calldatas, descriptionHash
);
}
function _cancel(
address[] memory targets,
uint256[] memory values,
bytes[] memory calldatas,
bytes32 descriptionHash
)
internal
override(GovernorUpgradeable, GovernorTimelockControlUpgradeable)
returns (uint256)
{
return
GovernorTimelockControlUpgradeable._cancel(targets, values, calldatas, descriptionHash);
}
function supportsInterface(bytes4 interfaceId)
public
view
override(GovernorUpgradeable, GovernorTimelockControlUpgradeable)
returns (bool)
{
return GovernorTimelockControlUpgradeable.supportsInterface(interfaceId);
}
/**
* @dev This empty reserved space is put in place to allow future versions to add new
* variables without shifting down storage in the inheritance chain.
* See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps
*/
uint256[50] private __gap;
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.0) (access/AccessControl.sol)
pragma solidity ^0.8.0;
import "./IAccessControlUpgradeable.sol";
import "../utils/ContextUpgradeable.sol";
import "../utils/StringsUpgradeable.sol";
import "../utils/introspection/ERC165Upgradeable.sol";
import "../proxy/utils/Initializable.sol";
/**
* @dev Contract module that allows children to implement role-based access
* control mechanisms. This is a lightweight version that doesn't allow enumerating role
* members except through off-chain means by accessing the contract event logs. Some
* applications may benefit from on-chain enumerability, for those cases see
* {AccessControlEnumerable}.
*
* Roles are referred to by their `bytes32` identifier. These should be exposed
* in the external API and be unique. The best way to achieve this is by
* using `public constant` hash digests:
*
* ```
* bytes32 public constant MY_ROLE = keccak256("MY_ROLE");
* ```
*
* Roles can be used to represent a set of permissions. To restrict access to a
* function call, use {hasRole}:
*
* ```
* function foo() public {
* require(hasRole(MY_ROLE, msg.sender));
* ...
* }
* ```
*
* Roles can be granted and revoked dynamically via the {grantRole} and
* {revokeRole} functions. Each role has an associated admin role, and only
* accounts that have a role's admin role can call {grantRole} and {revokeRole}.
*
* By default, the admin role for all roles is `DEFAULT_ADMIN_ROLE`, which means
* that only accounts with this role will be able to grant or revoke other
* roles. More complex role relationships can be created by using
* {_setRoleAdmin}.
*
* WARNING: The `DEFAULT_ADMIN_ROLE` is also its own admin: it has permission to
* grant and revoke this role. Extra precautions should be taken to secure
* accounts that have been granted it.
*/
abstract contract AccessControlUpgradeable is Initializable, ContextUpgradeable, IAccessControlUpgradeable, ERC165Upgradeable {
function __AccessControl_init() internal onlyInitializing {
}
function __AccessControl_init_unchained() internal onlyInitializing {
}
struct RoleData {
mapping(address => bool) members;
bytes32 adminRole;
}
mapping(bytes32 => RoleData) private _roles;
bytes32 public constant DEFAULT_ADMIN_ROLE = 0x00;
/**
* @dev Modifier that checks that an account has a specific role. Reverts
* with a standardized message including the required role.
*
* The format of the revert reason is given by the following regular expression:
*
* /^AccessControl: account (0x[0-9a-f]{40}) is missing role (0x[0-9a-f]{64})$/
*
* _Available since v4.1._
*/
modifier onlyRole(bytes32 role) {
_checkRole(role);
_;
}
/**
* @dev See {IERC165-supportsInterface}.
*/
function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
return interfaceId == type(IAccessControlUpgradeable).interfaceId || super.supportsInterface(interfaceId);
}
/**
* @dev Returns `true` if `account` has been granted `role`.
*/
function hasRole(bytes32 role, address account) public view virtual override returns (bool) {
return _roles[role].members[account];
}
/**
* @dev Revert with a standard message if `_msgSender()` is missing `role`.
* Overriding this function changes the behavior of the {onlyRole} modifier.
*
* Format of the revert message is described in {_checkRole}.
*
* _Available since v4.6._
*/
function _checkRole(bytes32 role) internal view virtual {
_checkRole(role, _msgSender());
}
/**
* @dev Revert with a standard message if `account` is missing `role`.
*
* The format of the revert reason is given by the following regular expression:
*
* /^AccessControl: account (0x[0-9a-f]{40}) is missing role (0x[0-9a-f]{64})$/
*/
function _checkRole(bytes32 role, address account) internal view virtual {
if (!hasRole(role, account)) {
revert(
string(
abi.encodePacked(
"AccessControl: account ",
StringsUpgradeable.toHexString(uint160(account), 20),
" is missing role ",
StringsUpgradeable.toHexString(uint256(role), 32)
)
)
);
}
}
/**
* @dev Returns the admin role that controls `role`. See {grantRole} and
* {revokeRole}.
*
* To change a role's admin, use {_setRoleAdmin}.
*/
function getRoleAdmin(bytes32 role) public view virtual override returns (bytes32) {
return _roles[role].adminRole;
}
/**
* @dev Grants `role` to `account`.
*
* If `account` had not been already granted `role`, emits a {RoleGranted}
* event.
*
* Requirements:
*
* - the caller must have ``role``'s admin role.
*
* May emit a {RoleGranted} event.
*/
function grantRole(bytes32 role, address account) public virtual override onlyRole(getRoleAdmin(role)) {
_grantRole(role, account);
}
/**
* @dev Revokes `role` from `account`.
*
* If `account` had been granted `role`, emits a {RoleRevoked} event.
*
* Requirements:
*
* - the caller must have ``role``'s admin role.
*
* May emit a {RoleRevoked} event.
*/
function revokeRole(bytes32 role, address account) public virtual override onlyRole(getRoleAdmin(role)) {
_revokeRole(role, account);
}
/**
* @dev Revokes `role` from the calling account.
*
* Roles are often managed via {grantRole} and {revokeRole}: this function's
* purpose is to provide a mechanism for accounts to lose their privileges
* if they are compromised (such as when a trusted device is misplaced).
*
* If the calling account had been revoked `role`, emits a {RoleRevoked}
* event.
*
* Requirements:
*
* - the caller must be `account`.
*
* May emit a {RoleRevoked} event.
*/
function renounceRole(bytes32 role, address account) public virtual override {
require(account == _msgSender(), "AccessControl: can only renounce roles for self");
_revokeRole(role, account);
}
/**
* @dev Grants `role` to `account`.
*
* If `account` had not been already granted `role`, emits a {RoleGranted}
* event. Note that unlike {grantRole}, this function doesn't perform any
* checks on the calling account.
*
* May emit a {RoleGranted} event.
*
* [WARNING]
* ====
* This function should only be called from the constructor when setting
* up the initial roles for the system.
*
* Using this function in any other way is effectively circumventing the admin
* system imposed by {AccessControl}.
* ====
*
* NOTE: This function is deprecated in favor of {_grantRole}.
*/
function _setupRole(bytes32 role, address account) internal virtual {
_grantRole(role, account);
}
/**
* @dev Sets `adminRole` as ``role``'s admin role.
*
* Emits a {RoleAdminChanged} event.
*/
function _setRoleAdmin(bytes32 role, bytes32 adminRole) internal virtual {
bytes32 previousAdminRole = getRoleAdmin(role);
_roles[role].adminRole = adminRole;
emit RoleAdminChanged(role, previousAdminRole, adminRole);
}
/**
* @dev Grants `role` to `account`.
*
* Internal function without access restriction.
*
* May emit a {RoleGranted} event.
*/
function _grantRole(bytes32 role, address account) internal virtual {
if (!hasRole(role, account)) {
_roles[role].members[account] = true;
emit RoleGranted(role, account, _msgSender());
}
}
/**
* @dev Revokes `role` from `account`.
*
* Internal function without access restriction.
*
* May emit a {RoleRevoked} event.
*/
function _revokeRole(bytes32 role, address account) internal virtual {
if (hasRole(role, account)) {
_roles[role].members[account] = false;
emit RoleRevoked(role, account, _msgSender());
}
}
/**
* @dev This empty reserved space is put in place to allow future versions to add new
* variables without shifting down storage in the inheritance chain.
* See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps
*/
uint256[49] private __gap;
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (access/IAccessControl.sol)
pragma solidity ^0.8.0;
/**
* @dev External interface of AccessControl declared to support ERC165 detection.
*/
interface IAccessControlUpgradeable {
/**
* @dev Emitted when `newAdminRole` is set as ``role``'s admin role, replacing `previousAdminRole`
*
* `DEFAULT_ADMIN_ROLE` is the starting admin for all roles, despite
* {RoleAdminChanged} not being emitted signaling this.
*
* _Available since v3.1._
*/
event RoleAdminChanged(bytes32 indexed role, bytes32 indexed previousAdminRole, bytes32 indexed newAdminRole);
/**
* @dev Emitted when `account` is granted `role`.
*
* `sender` is the account that originated the contract call, an admin role
* bearer except when using {AccessControl-_setupRole}.
*/
event RoleGranted(bytes32 indexed role, address indexed account, address indexed sender);
/**
* @dev Emitted when `account` is revoked `role`.
*
* `sender` is the account that originated the contract call:
* - if using `revokeRole`, it is the admin role bearer
* - if using `renounceRole`, it is the role bearer (i.e. `account`)
*/
event RoleRevoked(bytes32 indexed role, address indexed account, address indexed sender);
/**
* @dev Returns `true` if `account` has been granted `role`.
*/
function hasRole(bytes32 role, address account) external view returns (bool);
/**
* @dev Returns the admin role that controls `role`. See {grantRole} and
* {revokeRole}.
*
* To change a role's admin, use {AccessControl-_setRoleAdmin}.
*/
function getRoleAdmin(bytes32 role) external view returns (bytes32);
/**
* @dev Grants `role` to `account`.
*
* If `account` had not been already granted `role`, emits a {RoleGranted}
* event.
*
* Requirements:
*
* - the caller must have ``role``'s admin role.
*/
function grantRole(bytes32 role, address account) external;
/**
* @dev Revokes `role` from `account`.
*
* If `account` had been granted `role`, emits a {RoleRevoked} event.
*
* Requirements:
*
* - the caller must have ``role``'s admin role.
*/
function revokeRole(bytes32 role, address account) external;
/**
* @dev Revokes `role` from the calling account.
*
* Roles are often managed via {grantRole} and {revokeRole}: this function's
* purpose is to provide a mechanism for accounts to lose their privileges
* if they are compromised (such as when a trusted device is misplaced).
*
* If the calling account had been granted `role`, emits a {RoleRevoked}
* event.
*
* Requirements:
*
* - the caller must be `account`.
*/
function renounceRole(bytes32 role, address account) external;
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.0) (access/Ownable.sol)
pragma solidity ^0.8.0;
import "../utils/ContextUpgradeable.sol";
import "../proxy/utils/Initializable.sol";
/**
* @dev Contract module which provides a basic access control mechanism, where
* there is an account (an owner) that can be granted exclusive access to
* specific functions.
*
* By default, the owner account will be the one that deploys the contract. This
* can later be changed with {transferOwnership}.
*
* This module is used through inheritance. It will make available the modifier
* `onlyOwner`, which can be applied to your functions to restrict their use to
* the owner.
*/
abstract contract OwnableUpgradeable is Initializable, ContextUpgradeable {
address private _owner;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
/**
* @dev Initializes the contract setting the deployer as the initial owner.
*/
function __Ownable_init() internal onlyInitializing {
__Ownable_init_unchained();
}
function __Ownable_init_unchained() internal onlyInitializing {
_transferOwnership(_msgSender());
}
/**
* @dev Throws if called by any account other than the owner.
*/
modifier onlyOwner() {
_checkOwner();
_;
}
/**
* @dev Returns the address of the current owner.
*/
function owner() public view virtual returns (address) {
return _owner;
}
/**
* @dev Throws if the sender is not the owner.
*/
function _checkOwner() internal view virtual {
require(owner() == _msgSender(), "Ownable: caller is not the owner");
}
/**
* @dev Leaves the contract without owner. It will not be possible to call
* `onlyOwner` functions anymore. Can only be called by the current owner.
*
* NOTE: Renouncing ownership will leave the contract without an owner,
* thereby removing any functionality that is only available to the owner.
*/
function renounceOwnership() public virtual onlyOwner {
_transferOwnership(address(0));
}
/**
* @dev Transfers ownership of the contract to a new account (`newOwner`).
* Can only be called by the current owner.
*/
function transferOwnership(address newOwner) public virtual onlyOwner {
require(newOwner != address(0), "Ownable: new owner is the zero address");
_transferOwnership(newOwner);
}
/**
* @dev Transfers ownership of the contract to a new account (`newOwner`).
* Internal function without access restriction.
*/
function _transferOwnership(address newOwner) internal virtual {
address oldOwner = _owner;
_owner = newOwner;
emit OwnershipTransferred(oldOwner, newOwner);
}
/**
* @dev This empty reserved space is put in place to allow future versions to add new
* variables without shifting down storage in the inheritance chain.
* See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps
*/
uint256[49] private __gap;
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.2) (governance/Governor.sol)
pragma solidity ^0.8.0;
import "../token/ERC721/IERC721ReceiverUpgradeable.sol";
import "../token/ERC1155/IERC1155ReceiverUpgradeable.sol";
import "../utils/cryptography/ECDSAUpgradeable.sol";
import "../utils/cryptography/draft-EIP712Upgradeable.sol";
import "../utils/introspection/ERC165Upgradeable.sol";
import "../utils/math/SafeCastUpgradeable.sol";
import "../utils/structs/DoubleEndedQueueUpgradeable.sol";
import "../utils/AddressUpgradeable.sol";
import "../utils/ContextUpgradeable.sol";
import "../utils/TimersUpgradeable.sol";
import "./IGovernorUpgradeable.sol";
import "../proxy/utils/Initializable.sol";
/**
* @dev Core of the governance system, designed to be extended though various modules.
*
* This contract is abstract and requires several function to be implemented in various modules:
*
* - A counting module must implement {quorum}, {_quorumReached}, {_voteSucceeded} and {_countVote}
* - A voting module must implement {_getVotes}
* - Additionanly, the {votingPeriod} must also be implemented
*
* _Available since v4.3._
*/
abstract contract GovernorUpgradeable is Initializable, ContextUpgradeable, ERC165Upgradeable, EIP712Upgradeable, IGovernorUpgradeable, IERC721ReceiverUpgradeable, IERC1155ReceiverUpgradeable {
using DoubleEndedQueueUpgradeable for DoubleEndedQueueUpgradeable.Bytes32Deque;
using SafeCastUpgradeable for uint256;
using TimersUpgradeable for TimersUpgradeable.BlockNumber;
bytes32 public constant BALLOT_TYPEHASH = keccak256("Ballot(uint256 proposalId,uint8 support)");
bytes32 public constant EXTENDED_BALLOT_TYPEHASH =
keccak256("ExtendedBallot(uint256 proposalId,uint8 support,string reason,bytes params)");
struct ProposalCore {
TimersUpgradeable.BlockNumber voteStart;
TimersUpgradeable.BlockNumber voteEnd;
bool executed;
bool canceled;
}
string private _name;
mapping(uint256 => ProposalCore) private _proposals;
// This queue keeps track of the governor operating on itself. Calls to functions protected by the
// {onlyGovernance} modifier needs to be whitelisted in this queue. Whitelisting is set in {_beforeExecute},
// consumed by the {onlyGovernance} modifier and eventually reset in {_afterExecute}. This ensures that the
// execution of {onlyGovernance} protected calls can only be achieved through successful proposals.
DoubleEndedQueueUpgradeable.Bytes32Deque private _governanceCall;
/**
* @dev Restricts a function so it can only be executed through governance proposals. For example, governance
* parameter setters in {GovernorSettings} are protected using this modifier.
*
* The governance executing address may be different from the Governor's own address, for example it could be a
* timelock. This can be customized by modules by overriding {_executor}. The executor is only able to invoke these
* functions during the execution of the governor's {execute} function, and not under any other circumstances. Thus,
* for example, additional timelock proposers are not able to change governance parameters without going through the
* governance protocol (since v4.6).
*/
modifier onlyGovernance() {
require(_msgSender() == _executor(), "Governor: onlyGovernance");
if (_executor() != address(this)) {
bytes32 msgDataHash = keccak256(_msgData());
// loop until popping the expected operation - throw if deque is empty (operation not authorized)
while (_governanceCall.popFront() != msgDataHash) {}
}
_;
}
/**
* @dev Sets the value for {name} and {version}
*/
function __Governor_init(string memory name_) internal onlyInitializing {
__EIP712_init_unchained(name_, version());
__Governor_init_unchained(name_);
}
function __Governor_init_unchained(string memory name_) internal onlyInitializing {
_name = name_;
}
/**
* @dev Function to receive ETH that will be handled by the governor (disabled if executor is a third party contract)
*/
receive() external payable virtual {
require(_executor() == address(this));
}
/**
* @dev See {IERC165-supportsInterface}.
*/
function supportsInterface(bytes4 interfaceId) public view virtual override(IERC165Upgradeable, ERC165Upgradeable) returns (bool) {
// In addition to the current interfaceId, also support previous version of the interfaceId that did not
// include the castVoteWithReasonAndParams() function as standard
return
interfaceId ==
(type(IGovernorUpgradeable).interfaceId ^
this.castVoteWithReasonAndParams.selector ^
this.castVoteWithReasonAndParamsBySig.selector ^
this.getVotesWithParams.selector) ||
interfaceId == type(IGovernorUpgradeable).interfaceId ||
interfaceId == type(IERC1155ReceiverUpgradeable).interfaceId ||
super.supportsInterface(interfaceId);
}
/**
* @dev See {IGovernor-name}.
*/
function name() public view virtual override returns (string memory) {
return _name;
}
/**
* @dev See {IGovernor-version}.
*/
function version() public view virtual override returns (string memory) {
return "1";
}
/**
* @dev See {IGovernor-hashProposal}.
*
* The proposal id is produced by hashing the ABI encoded `targets` array, the `values` array, the `calldatas` array
* and the descriptionHash (bytes32 which itself is the keccak256 hash of the description string). This proposal id
* can be produced from the proposal data which is part of the {ProposalCreated} event. It can even be computed in
* advance, before the proposal is submitted.
*
* Note that the chainId and the governor address are not part of the proposal id computation. Consequently, the
* same proposal (with same operation and same description) will have the same id if submitted on multiple governors
* across multiple networks. This also means that in order to execute the same operation twice (on the same
* governor) the proposer will have to change the description in order to avoid proposal id conflicts.
*/
function hashProposal(
address[] memory targets,
uint256[] memory values,
bytes[] memory calldatas,
bytes32 descriptionHash
) public pure virtual override returns (uint256) {
return uint256(keccak256(abi.encode(targets, values, calldatas, descriptionHash)));
}
/**
* @dev See {IGovernor-state}.
*/
function state(uint256 proposalId) public view virtual override returns (ProposalState) {
ProposalCore storage proposal = _proposals[proposalId];
if (proposal.executed) {
return ProposalState.Executed;
}
if (proposal.canceled) {
return ProposalState.Canceled;
}
uint256 snapshot = proposalSnapshot(proposalId);
if (snapshot == 0) {
revert("Governor: unknown proposal id");
}
if (snapshot >= block.number) {
return ProposalState.Pending;
}
uint256 deadline = proposalDeadline(proposalId);
if (deadline >= block.number) {
return ProposalState.Active;
}
if (_quorumReached(proposalId) && _voteSucceeded(proposalId)) {
return ProposalState.Succeeded;
} else {
return ProposalState.Defeated;
}
}
/**
* @dev See {IGovernor-proposalSnapshot}.
*/
function proposalSnapshot(uint256 proposalId) public view virtual override returns (uint256) {
return _proposals[proposalId].voteStart.getDeadline();
}
/**
* @dev See {IGovernor-proposalDeadline}.
*/
function proposalDeadline(uint256 proposalId) public view virtual override returns (uint256) {
return _proposals[proposalId].voteEnd.getDeadline();
}
/**
* @dev Part of the Governor Bravo's interface: _"The number of votes required in order for a voter to become a proposer"_.
*/
function proposalThreshold() public view virtual returns (uint256) {
return 0;
}
/**
* @dev Amount of votes already cast passes the threshold limit.
*/
function _quorumReached(uint256 proposalId) internal view virtual returns (bool);
/**
* @dev Is the proposal successful or not.
*/
function _voteSucceeded(uint256 proposalId) internal view virtual returns (bool);
/**
* @dev Get the voting weight of `account` at a specific `blockNumber`, for a vote as described by `params`.
*/
function _getVotes(
address account,
uint256 blockNumber,
bytes memory params
) internal view virtual returns (uint256);
/**
* @dev Register a vote for `proposalId` by `account` with a given `support`, voting `weight` and voting `params`.
*
* Note: Support is generic and can represent various things depending on the voting system used.
*/
function _countVote(
uint256 proposalId,
address account,
uint8 support,
uint256 weight,
bytes memory params
) internal virtual;
/**
* @dev Default additional encoded parameters used by castVote methods that don't include them
*
* Note: Should be overridden by specific implementations to use an appropriate value, the
* meaning of the additional params, in the context of that implementation
*/
function _defaultParams() internal view virtual returns (bytes memory) {
return "";
}
/**
* @dev See {IGovernor-propose}.
*/
function propose(
address[] memory targets,
uint256[] memory values,
bytes[] memory calldatas,
string memory description
) public virtual override returns (uint256) {
require(
getVotes(_msgSender(), block.number - 1) >= proposalThreshold(),
"Governor: proposer votes below proposal threshold"
);
uint256 proposalId = hashProposal(targets, values, calldatas, keccak256(bytes(description)));
require(targets.length == values.length, "Governor: invalid proposal length");
require(targets.length == calldatas.length, "Governor: invalid proposal length");
require(targets.length > 0, "Governor: empty proposal");
ProposalCore storage proposal = _proposals[proposalId];
require(proposal.voteStart.isUnset(), "Governor: proposal already exists");
uint64 snapshot = block.number.toUint64() + votingDelay().toUint64();
uint64 deadline = snapshot + votingPeriod().toUint64();
proposal.voteStart.setDeadline(snapshot);
proposal.voteEnd.setDeadline(deadline);
emit ProposalCreated(
proposalId,
_msgSender(),
targets,
values,
new string[](targets.length),
calldatas,
snapshot,
deadline,
description
);
return proposalId;
}
/**
* @dev See {IGovernor-execute}.
*/
function execute(
address[] memory targets,
uint256[] memory values,
bytes[] memory calldatas,
bytes32 descriptionHash
) public payable virtual override returns (uint256) {
uint256 proposalId = hashProposal(targets, values, calldatas, descriptionHash);
ProposalState status = state(proposalId);
require(
status == ProposalState.Succeeded || status == ProposalState.Queued,
"Governor: proposal not successful"
);
_proposals[proposalId].executed = true;
emit ProposalExecuted(proposalId);
_beforeExecute(proposalId, targets, values, calldatas, descriptionHash);
_execute(proposalId, targets, values, calldatas, descriptionHash);
_afterExecute(proposalId, targets, values, calldatas, descriptionHash);
return proposalId;
}
/**
* @dev Internal execution mechanism. Can be overridden to implement different execution mechanism
*/
function _execute(
uint256, /* proposalId */
address[] memory targets,
uint256[] memory values,
bytes[] memory calldatas,
bytes32 /*descriptionHash*/
) internal virtual {
string memory errorMessage = "Governor: call reverted without message";
for (uint256 i = 0; i < targets.length; ++i) {
(bool success, bytes memory returndata) = targets[i].call{value: values[i]}(calldatas[i]);
AddressUpgradeable.verifyCallResult(success, returndata, errorMessage);
}
}
/**
* @dev Hook before execution is triggered.
*/
function _beforeExecute(
uint256, /* proposalId */
address[] memory targets,
uint256[] memory, /* values */
bytes[] memory calldatas,
bytes32 /*descriptionHash*/
) internal virtual {
if (_executor() != address(this)) {
for (uint256 i = 0; i < targets.length; ++i) {
if (targets[i] == address(this)) {
_governanceCall.pushBack(keccak256(calldatas[i]));
}
}
}
}
/**
* @dev Hook after execution is triggered.
*/
function _afterExecute(
uint256, /* proposalId */
address[] memory, /* targets */
uint256[] memory, /* values */
bytes[] memory, /* calldatas */
bytes32 /*descriptionHash*/
) internal virtual {
if (_executor() != address(this)) {
if (!_governanceCall.empty()) {
_governanceCall.clear();
}
}
}
/**
* @dev Internal cancel mechanism: locks up the proposal timer, preventing it from being re-submitted. Marks it as
* canceled to allow distinguishing it from executed proposals.
*
* Emits a {IGovernor-ProposalCanceled} event.
*/
function _cancel(
address[] memory targets,
uint256[] memory values,
bytes[] memory calldatas,
bytes32 descriptionHash
) internal virtual returns (uint256) {
uint256 proposalId = hashProposal(targets, values, calldatas, descriptionHash);
ProposalState status = state(proposalId);
require(
status != ProposalState.Canceled && status != ProposalState.Expired && status != ProposalState.Executed,
"Governor: proposal not active"
);
_proposals[proposalId].canceled = true;
emit ProposalCanceled(proposalId);
return proposalId;
}
/**
* @dev See {IGovernor-getVotes}.
*/
function getVotes(address account, uint256 blockNumber) public view virtual override returns (uint256) {
return _getVotes(account, blockNumber, _defaultParams());
}
/**
* @dev See {IGovernor-getVotesWithParams}.
*/
function getVotesWithParams(
address account,
uint256 blockNumber,
bytes memory params
) public view virtual override returns (uint256) {
return _getVotes(account, blockNumber, params);
}
/**
* @dev See {IGovernor-castVote}.
*/
function castVote(uint256 proposalId, uint8 support) public virtual override returns (uint256) {
address voter = _msgSender();
return _castVote(proposalId, voter, support, "");
}
/**
* @dev See {IGovernor-castVoteWithReason}.
*/
function castVoteWithReason(
uint256 proposalId,
uint8 support,
string calldata reason
) public virtual override returns (uint256) {
address voter = _msgSender();
return _castVote(proposalId, voter, support, reason);
}
/**
* @dev See {IGovernor-castVoteWithReasonAndParams}.
*/
function castVoteWithReasonAndParams(
uint256 proposalId,
uint8 support,
string calldata reason,
bytes memory params
) public virtual override returns (uint256) {
address voter = _msgSender();
return _castVote(proposalId, voter, support, reason, params);
}
/**
* @dev See {IGovernor-castVoteBySig}.
*/
function castVoteBySig(
uint256 proposalId,
uint8 support,
uint8 v,
bytes32 r,
bytes32 s
) public virtual override returns (uint256) {
address voter = ECDSAUpgradeable.recover(
_hashTypedDataV4(keccak256(abi.encode(BALLOT_TYPEHASH, proposalId, support))),
v,
r,
s
);
return _castVote(proposalId, voter, support, "");
}
/**
* @dev See {IGovernor-castVoteWithReasonAndParamsBySig}.
*/
function castVoteWithReasonAndParamsBySig(
uint256 proposalId,
uint8 support,
string calldata reason,
bytes memory params,
uint8 v,
bytes32 r,
bytes32 s
) public virtual override returns (uint256) {
address voter = ECDSAUpgradeable.recover(
_hashTypedDataV4(
keccak256(
abi.encode(
EXTENDED_BALLOT_TYPEHASH,
proposalId,
support,
keccak256(bytes(reason)),
keccak256(params)
)
)
),
v,
r,
s
);
return _castVote(proposalId, voter, support, reason, params);
}
/**
* @dev Internal vote casting mechanism: Check that the vote is pending, that it has not been cast yet, retrieve
* voting weight using {IGovernor-getVotes} and call the {_countVote} internal function. Uses the _defaultParams().
*
* Emits a {IGovernor-VoteCast} event.
*/
function _castVote(
uint256 proposalId,
address account,
uint8 support,
string memory reason
) internal virtual returns (uint256) {
return _castVote(proposalId, account, support, reason, _defaultParams());
}
/**
* @dev Internal vote casting mechanism: Check that the vote is pending, that it has not been cast yet, retrieve
* voting weight using {IGovernor-getVotes} and call the {_countVote} internal function.
*
* Emits a {IGovernor-VoteCast} event.
*/
function _castVote(
uint256 proposalId,
address account,
uint8 support,
string memory reason,
bytes memory params
) internal virtual returns (uint256) {
ProposalCore storage proposal = _proposals[proposalId];
require(state(proposalId) == ProposalState.Active, "Governor: vote not currently active");
uint256 weight = _getVotes(account, proposal.voteStart.getDeadline(), params);
_countVote(proposalId, account, support, weight, params);
if (params.length == 0) {
emit VoteCast(account, proposalId, support, weight, reason);
} else {
emit VoteCastWithParams(account, proposalId, support, weight, reason, params);
}
return weight;
}
/**
* @dev Relays a transaction or function call to an arbitrary target. In cases where the governance executor
* is some contract other than the governor itself, like when using a timelock, this function can be invoked
* in a governance proposal to recover tokens or Ether that was sent to the governor contract by mistake.
* Note that if the executor is simply the governor itself, use of `relay` is redundant.
*/
function relay(
address target,
uint256 value,
bytes calldata data
) external virtual onlyGovernance {
AddressUpgradeable.functionCallWithValue(target, data, value);
}
/**
* @dev Address through which the governor executes action. Will be overloaded by module that execute actions
* through another contract such as a timelock.
*/
function _executor() internal view virtual returns (address) {
return address(this);
}
/**
* @dev See {IERC721Receiver-onERC721Received}.
*/
function onERC721Received(
address,
address,
uint256,
bytes memory
) public virtual override returns (bytes4) {
return this.onERC721Received.selector;
}
/**
* @dev See {IERC1155Receiver-onERC1155Received}.
*/
function onERC1155Received(
address,
address,
uint256,
uint256,
bytes memory
) public virtual override returns (bytes4) {
return this.onERC1155Received.selector;
}
/**
* @dev See {IERC1155Receiver-onERC1155BatchReceived}.
*/
function onERC1155BatchReceived(
address,
address,
uint256[] memory,
uint256[] memory,
bytes memory
) public virtual override returns (bytes4) {
return this.onERC1155BatchReceived.selector;
}
/**
* @dev This empty reserved space is put in place to allow future versions to add new
* variables without shifting down storage in the inheritance chain.
* See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps
*/
uint256[46] private __gap;
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.2) (governance/IGovernor.sol)
pragma solidity ^0.8.0;
import "../utils/introspection/ERC165Upgradeable.sol";
import "../proxy/utils/Initializable.sol";
/**
* @dev Interface of the {Governor} core.
*
* _Available since v4.3._
*/
abstract contract IGovernorUpgradeable is Initializable, IERC165Upgradeable {
function __IGovernor_init() internal onlyInitializing {
}
function __IGovernor_init_unchained() internal onlyInitializing {
}
enum ProposalState {
Pending,
Active,
Canceled,
Defeated,
Succeeded,
Queued,
Expired,
Executed
}
/**
* @dev Emitted when a proposal is created.
*/
event ProposalCreated(
uint256 proposalId,
address proposer,
address[] targets,
uint256[] values,
string[] signatures,
bytes[] calldatas,
uint256 startBlock,
uint256 endBlock,
string description
);
/**
* @dev Emitted when a proposal is canceled.
*/
event ProposalCanceled(uint256 proposalId);
/**
* @dev Emitted when a proposal is executed.
*/
event ProposalExecuted(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 intepepretation 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 ERC712 domain separator).
*/
function name() public view virtual returns (string memory);
/**
* @notice module:core
* @dev Version of the governor instance (used in building the ERC712 domain separator). Default: "1"
*/
function version() public view virtual 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() public pure virtual returns (string memory);
/**
* @notice module:core
* @dev Hashing function used to (re)build the proposal id from the proposal details..
*/
function hashProposal(
address[] memory targets,
uint256[] memory values,
bytes[] memory calldatas,
bytes32 descriptionHash
) public pure virtual returns (uint256);
/**
* @notice module:core
* @dev Current state of a proposal, following Compound's convention
*/
function state(uint256 proposalId) public view virtual returns (ProposalState);
/**
* @notice module:core
* @dev Block number used to retrieve user's votes and quorum. As per Compound's Comp and OpenZeppelin's
* ERC20Votes, 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) public view virtual returns (uint256);
/**
* @notice module:core
* @dev Block number at which votes close. Votes close at the end of this block, so it is possible to cast a vote
* during this block.
*/
function proposalDeadline(uint256 proposalId) public view virtual returns (uint256);
/**
* @notice module:user-config
* @dev Delay, in number of block, between the proposal is created and the vote starts. This can be increassed to
* leave time for users to buy voting power, or delegate it, before the voting of a proposal starts.
*/
function votingDelay() public view virtual returns (uint256);
/**
* @notice module:user-config
* @dev Delay, in number of blocks, between the vote start and vote ends.
*
* NOTE: The {votingDelay} can delay the start of the vote. This must be considered when setting the voting
* duration compared to the voting delay.
*/
function votingPeriod() public view virtual returns (uint256);
/**
* @notice module:user-config
* @dev Minimum number of cast voted required for a proposal to be successful.
*
* Note: The `blockNumber` 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 block (see {ERC20Votes}).
*/
function quorum(uint256 blockNumber) public view virtual returns (uint256);
/**
* @notice module:reputation
* @dev Voting power of an `account` at a specific `blockNumber`.
*
* 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 blockNumber) public view virtual returns (uint256);
/**
* @notice module:reputation
* @dev Voting power of an `account` at a specific `blockNumber` given additional encoded parameters.
*/
function getVotesWithParams(
address account,
uint256 blockNumber,
bytes memory params
) public view virtual returns (uint256);
/**
* @notice module:voting
* @dev Returns weither `account` has cast a vote on `proposalId`.
*/
function hasVoted(uint256 proposalId, address account) public view virtual returns (bool);
/**
* @dev Create a new proposal. Vote start {IGovernor-votingDelay} blocks after the proposal is created and ends
* {IGovernor-votingPeriod} blocks after the voting starts.
*
* Emits a {ProposalCreated} event.
*/
function propose(
address[] memory targets,
uint256[] memory values,
bytes[] memory calldatas,
string memory description
) public virtual 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.
*
* Emits a {ProposalExecuted} event.
*
* Note: some module 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
) public payable virtual returns (uint256 proposalId);
/**
* @dev Cast a vote
*
* Emits a {VoteCast} event.
*/
function castVote(uint256 proposalId, uint8 support) public virtual returns (uint256 balance);
/**
* @dev Cast a vote with a reason
*
* Emits a {VoteCast} event.
*/
function castVoteWithReason(
uint256 proposalId,
uint8 support,
string calldata reason
) public virtual 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
) public virtual returns (uint256 balance);
/**
* @dev Cast a vote using the user's cryptographic signature.
*
* Emits a {VoteCast} event.
*/
function castVoteBySig(
uint256 proposalId,
uint8 support,
uint8 v,
bytes32 r,
bytes32 s
) public virtual returns (uint256 balance);
/**
* @dev Cast a vote with a reason and additional encoded parameters using the user's cryptographic signature.
*
* Emits a {VoteCast} or {VoteCastWithParams} event depending on the length of params.
*/
function castVoteWithReasonAndParamsBySig(
uint256 proposalId,
uint8 support,
string calldata reason,
bytes memory params,
uint8 v,
bytes32 r,
bytes32 s
) public virtual returns (uint256 balance);
/**
* @dev This empty reserved space is put in place to allow future versions to add new
* variables without shifting down storage in the inheritance chain.
* See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps
*/
uint256[50] private __gap;
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.0) (governance/TimelockController.sol)
pragma solidity ^0.8.0;
import "../access/AccessControlUpgradeable.sol";
import "../token/ERC721/IERC721ReceiverUpgradeable.sol";
import "../token/ERC1155/IERC1155ReceiverUpgradeable.sol";
import "../utils/AddressUpgradeable.sol";
import "../proxy/utils/Initializable.sol";
/**
* @dev Contract module which acts as a timelocked controller. When set as the
* owner of an `Ownable` smart contract, it enforces a timelock on all
* `onlyOwner` maintenance operations. This gives time for users of the
* controlled contract to exit before a potentially dangerous maintenance
* operation is applied.
*
* By default, this contract is self administered, meaning administration tasks
* have to go through the timelock process. The proposer (resp executor) role
* is in charge of proposing (resp executing) operations. A common use case is
* to position this {TimelockController} as the owner of a smart contract, with
* a multisig or a DAO as the sole proposer.
*
* _Available since v3.3._
*/
contract TimelockControllerUpgradeable is Initializable, AccessControlUpgradeable, IERC721ReceiverUpgradeable, IERC1155ReceiverUpgradeable {
bytes32 public constant TIMELOCK_ADMIN_ROLE = keccak256("TIMELOCK_ADMIN_ROLE");
bytes32 public constant PROPOSER_ROLE = keccak256("PROPOSER_ROLE");
bytes32 public constant EXECUTOR_ROLE = keccak256("EXECUTOR_ROLE");
bytes32 public constant CANCELLER_ROLE = keccak256("CANCELLER_ROLE");
uint256 internal constant _DONE_TIMESTAMP = uint256(1);
mapping(bytes32 => uint256) private _timestamps;
uint256 private _minDelay;
/**
* @dev Emitted when a call is scheduled as part of operation `id`.
*/
event CallScheduled(
bytes32 indexed id,
uint256 indexed index,
address target,
uint256 value,
bytes data,
bytes32 predecessor,
uint256 delay
);
/**
* @dev Emitted when a call is performed as part of operation `id`.
*/
event CallExecuted(bytes32 indexed id, uint256 indexed index, address target, uint256 value, bytes data);
/**
* @dev Emitted when operation `id` is cancelled.
*/
event Cancelled(bytes32 indexed id);
/**
* @dev Emitted when the minimum delay for future operations is modified.
*/
event MinDelayChange(uint256 oldDuration, uint256 newDuration);
/**
* @dev Initializes the contract with a given `minDelay`, and a list of
* initial proposers and executors. The proposers receive both the
* proposer and the canceller role (for backward compatibility). The
* executors receive the executor role.
*
* NOTE: At construction, both the deployer and the timelock itself are
* administrators. This helps further configuration of the timelock by the
* deployer. After configuration is done, it is recommended that the
* deployer renounces its admin position and relies on timelocked
* operations to perform future maintenance.
*/
function __TimelockController_init(
uint256 minDelay,
address[] memory proposers,
address[] memory executors
) internal onlyInitializing {
__TimelockController_init_unchained(minDelay, proposers, executors);
}
function __TimelockController_init_unchained(
uint256 minDelay,
address[] memory proposers,
address[] memory executors
) internal onlyInitializing {
_setRoleAdmin(TIMELOCK_ADMIN_ROLE, TIMELOCK_ADMIN_ROLE);
_setRoleAdmin(PROPOSER_ROLE, TIMELOCK_ADMIN_ROLE);
_setRoleAdmin(EXECUTOR_ROLE, TIMELOCK_ADMIN_ROLE);
_setRoleAdmin(CANCELLER_ROLE, TIMELOCK_ADMIN_ROLE);
// deployer + self administration
_setupRole(TIMELOCK_ADMIN_ROLE, _msgSender());
_setupRole(TIMELOCK_ADMIN_ROLE, address(this));
// register proposers and cancellers
for (uint256 i = 0; i < proposers.length; ++i) {
_setupRole(PROPOSER_ROLE, proposers[i]);
_setupRole(CANCELLER_ROLE, proposers[i]);
}
// register executors
for (uint256 i = 0; i < executors.length; ++i) {
_setupRole(EXECUTOR_ROLE, executors[i]);
}
_minDelay = minDelay;
emit MinDelayChange(0, minDelay);
}
/**
* @dev Modifier to make a function callable only by a certain role. In
* addition to checking the sender's role, `address(0)` 's role is also
* considered. Granting a role to `address(0)` is equivalent to enabling
* this role for everyone.
*/
modifier onlyRoleOrOpenRole(bytes32 role) {
if (!hasRole(role, address(0))) {
_checkRole(role, _msgSender());
}
_;
}
/**
* @dev Contract might receive/hold ETH as part of the maintenance process.
*/
receive() external payable {}
/**
* @dev See {IERC165-supportsInterface}.
*/
function supportsInterface(bytes4 interfaceId) public view virtual override(IERC165Upgradeable, AccessControlUpgradeable) returns (bool) {
return interfaceId == type(IERC1155ReceiverUpgradeable).interfaceId || super.supportsInterface(interfaceId);
}
/**
* @dev Returns whether an id correspond to a registered operation. This
* includes both Pending, Ready and Done operations.
*/
function isOperation(bytes32 id) public view virtual returns (bool registered) {
return getTimestamp(id) > 0;
}
/**
* @dev Returns whether an operation is pending or not.
*/
function isOperationPending(bytes32 id) public view virtual returns (bool pending) {
return getTimestamp(id) > _DONE_TIMESTAMP;
}
/**
* @dev Returns whether an operation is ready or not.
*/
function isOperationReady(bytes32 id) public view virtual returns (bool ready) {
uint256 timestamp = getTimestamp(id);
return timestamp > _DONE_TIMESTAMP && timestamp <= block.timestamp;
}
/**
* @dev Returns whether an operation is done or not.
*/
function isOperationDone(bytes32 id) public view virtual returns (bool done) {
return getTimestamp(id) == _DONE_TIMESTAMP;
}
/**
* @dev Returns the timestamp at with an operation becomes ready (0 for
* unset operations, 1 for done operations).
*/
function getTimestamp(bytes32 id) public view virtual returns (uint256 timestamp) {
return _timestamps[id];
}
/**
* @dev Returns the minimum delay for an operation to become valid.
*
* This value can be changed by executing an operation that calls `updateDelay`.
*/
function getMinDelay() public view virtual returns (uint256 duration) {
return _minDelay;
}
/**
* @dev Returns the identifier of an operation containing a single
* transaction.
*/
function hashOperation(
address target,
uint256 value,
bytes calldata data,
bytes32 predecessor,
bytes32 salt
) public pure virtual returns (bytes32 hash) {
return keccak256(abi.encode(target, value, data, predecessor, salt));
}
/**
* @dev Returns the identifier of an operation containing a batch of
* transactions.
*/
function hashOperationBatch(
address[] calldata targets,
uint256[] calldata values,
bytes[] calldata payloads,
bytes32 predecessor,
bytes32 salt
) public pure virtual returns (bytes32 hash) {
return keccak256(abi.encode(targets, values, payloads, predecessor, salt));
}
/**
* @dev Schedule an operation containing a single transaction.
*
* Emits a {CallScheduled} event.
*
* Requirements:
*
* - the caller must have the 'proposer' role.
*/
function schedule(
address target,
uint256 value,
bytes calldata data,
bytes32 predecessor,
bytes32 salt,
uint256 delay
) public virtual onlyRole(PROPOSER_ROLE) {
bytes32 id = hashOperation(target, value, data, predecessor, salt);
_schedule(id, delay);
emit CallScheduled(id, 0, target, value, data, predecessor, delay);
}
/**
* @dev Schedule an operation containing a batch of transactions.
*
* Emits one {CallScheduled} event per transaction in the batch.
*
* Requirements:
*
* - the caller must have the 'proposer' role.
*/
function scheduleBatch(
address[] calldata targets,
uint256[] calldata values,
bytes[] calldata payloads,
bytes32 predecessor,
bytes32 salt,
uint256 delay
) public virtual onlyRole(PROPOSER_ROLE) {
require(targets.length == values.length, "TimelockController: length mismatch");
require(targets.length == payloads.length, "TimelockController: length mismatch");
bytes32 id = hashOperationBatch(targets, values, payloads, predecessor, salt);
_schedule(id, delay);
for (uint256 i = 0; i < targets.length; ++i) {
emit CallScheduled(id, i, targets[i], values[i], payloads[i], predecessor, delay);
}
}
/**
* @dev Schedule an operation that is to becomes valid after a given delay.
*/
function _schedule(bytes32 id, uint256 delay) private {
require(!isOperation(id), "TimelockController: operation already scheduled");
require(delay >= getMinDelay(), "TimelockController: insufficient delay");
_timestamps[id] = block.timestamp + delay;
}
/**
* @dev Cancel an operation.
*
* Requirements:
*
* - the caller must have the 'canceller' role.
*/
function cancel(bytes32 id) public virtual onlyRole(CANCELLER_ROLE) {
require(isOperationPending(id), "TimelockController: operation cannot be cancelled");
delete _timestamps[id];
emit Cancelled(id);
}
/**
* @dev Execute an (ready) operation containing a single transaction.
*
* Emits a {CallExecuted} event.
*
* Requirements:
*
* - the caller must have the 'executor' role.
*/
// This function can reenter, but it doesn't pose a risk because _afterCall checks that the proposal is pending,
// thus any modifications to the operation during reentrancy should be caught.
// slither-disable-next-line reentrancy-eth
function execute(
address target,
uint256 value,
bytes calldata payload,
bytes32 predecessor,
bytes32 salt
) public payable virtual onlyRoleOrOpenRole(EXECUTOR_ROLE) {
bytes32 id = hashOperation(target, value, payload, predecessor, salt);
_beforeCall(id, predecessor);
_execute(target, value, payload);
emit CallExecuted(id, 0, target, value, payload);
_afterCall(id);
}
/**
* @dev Execute an (ready) operation containing a batch of transactions.
*
* Emits one {CallExecuted} event per transaction in the batch.
*
* Requirements:
*
* - the caller must have the 'executor' role.
*/
function executeBatch(
address[] calldata targets,
uint256[] calldata values,
bytes[] calldata payloads,
bytes32 predecessor,
bytes32 salt
) public payable virtual onlyRoleOrOpenRole(EXECUTOR_ROLE) {
require(targets.length == values.length, "TimelockController: length mismatch");
require(targets.length == payloads.length, "TimelockController: length mismatch");
bytes32 id = hashOperationBatch(targets, values, payloads, predecessor, salt);
_beforeCall(id, predecessor);
for (uint256 i = 0; i < targets.length; ++i) {
address target = targets[i];
uint256 value = values[i];
bytes calldata payload = payloads[i];
_execute(target, value, payload);
emit CallExecuted(id, i, target, value, payload);
}
_afterCall(id);
}
/**
* @dev Execute an operation's call.
*/
function _execute(
address target,
uint256 value,
bytes calldata data
) internal virtual {
(bool success, ) = target.call{value: value}(data);
require(success, "TimelockController: underlying transaction reverted");
}
/**
* @dev Checks before execution of an operation's calls.
*/
function _beforeCall(bytes32 id, bytes32 predecessor) private view {
require(isOperationReady(id), "TimelockController: operation is not ready");
require(predecessor == bytes32(0) || isOperationDone(predecessor), "TimelockController: missing dependency");
}
/**
* @dev Checks after execution of an operation's calls.
*/
function _afterCall(bytes32 id) private {
require(isOperationReady(id), "TimelockController: operation is not ready");
_timestamps[id] = _DONE_TIMESTAMP;
}
/**
* @dev Changes the minimum timelock duration for future operations.
*
* Emits a {MinDelayChange} event.
*
* Requirements:
*
* - the caller must be the timelock itself. This can only be achieved by scheduling and later executing
* an operation where the timelock is the target and the data is the ABI-encoded call to this function.
*/
function updateDelay(uint256 newDelay) external virtual {
require(msg.sender == address(this), "TimelockController: caller must be timelock");
emit MinDelayChange(_minDelay, newDelay);
_minDelay = newDelay;
}
/**
* @dev See {IERC721Receiver-onERC721Received}.
*/
function onERC721Received(
address,
address,
uint256,
bytes memory
) public virtual override returns (bytes4) {
return this.onERC721Received.selector;
}
/**
* @dev See {IERC1155Receiver-onERC1155Received}.
*/
function onERC1155Received(
address,
address,
uint256,
uint256,
bytes memory
) public virtual override returns (bytes4) {
return this.onERC1155Received.selector;
}
/**
* @dev See {IERC1155Receiver-onERC1155BatchReceived}.
*/
function onERC1155BatchReceived(
address,
address,
uint256[] memory,
uint256[] memory,
bytes memory
) public virtual override returns (bytes4) {
return this.onERC1155BatchReceived.selector;
}
/**
* @dev This empty reserved space is put in place to allow future versions to add new
* variables without shifting down storage in the inheritance chain.
* See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps
*/
uint256[48] private __gap;
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.6.0) (governance/extensions/GovernorCountingSimple.sol)
pragma solidity ^0.8.0;
import "../GovernorUpgradeable.sol";
import "../../proxy/utils/Initializable.sol";
/**
* @dev Extension of {Governor} for simple, 3 options, vote counting.
*
* _Available since v4.3._
*/
abstract contract GovernorCountingSimpleUpgradeable is Initializable, GovernorUpgradeable {
function __GovernorCountingSimple_init() internal onlyInitializing {
}
function __GovernorCountingSimple_init_unchained() internal onlyInitializing {
}
/**
* @dev Supported vote types. Matches Governor Bravo ordering.
*/
enum VoteType {
Against,
For,
Abstain
}
struct ProposalVote {
uint256 againstVotes;
uint256 forVotes;
uint256 abstainVotes;
mapping(address => bool) hasVoted;
}
mapping(uint256 => ProposalVote) private _proposalVotes;
/**
* @dev See {IGovernor-COUNTING_MODE}.
*/
// solhint-disable-next-line func-name-mixedcase
function COUNTING_MODE() public pure virtual override returns (string memory) {
return "support=bravo&quorum=for,abstain";
}
/**
* @dev See {IGovernor-hasVoted}.
*/
function hasVoted(uint256 proposalId, address account) public view virtual override returns (bool) {
return _proposalVotes[proposalId].hasVoted[account];
}
/**
* @dev Accessor to the internal vote counts.
*/
function proposalVotes(uint256 proposalId)
public
view
virtual
returns (
uint256 againstVotes,
uint256 forVotes,
uint256 abstainVotes
)
{
ProposalVote storage proposalvote = _proposalVotes[proposalId];
return (proposalvote.againstVotes, proposalvote.forVotes, proposalvote.abstainVotes);
}
/**
* @dev See {Governor-_quorumReached}.
*/
function _quorumReached(uint256 proposalId) internal view virtual override returns (bool) {
ProposalVote storage proposalvote = _proposalVotes[proposalId];
return quorum(proposalSnapshot(proposalId)) <= proposalvote.forVotes + proposalvote.abstainVotes;
}
/**
* @dev See {Governor-_voteSucceeded}. In this module, the forVotes must be strictly over the againstVotes.
*/
function _voteSucceeded(uint256 proposalId) internal view virtual override returns (bool) {
ProposalVote storage proposalvote = _proposalVotes[proposalId];
return proposalvote.forVotes > proposalvote.againstVotes;
}
/**
* @dev See {Governor-_countVote}. In this module, the support follows the `VoteType` enum (from Governor Bravo).
*/
function _countVote(
uint256 proposalId,
address account,
uint8 support,
uint256 weight,
bytes memory // params
) internal virtual override {
ProposalVote storage proposalvote = _proposalVotes[proposalId];
require(!proposalvote.hasVoted[account], "GovernorVotingSimple: vote already cast");
proposalvote.hasVoted[account] = true;
if (support == uint8(VoteType.Against)) {
proposalvote.againstVotes += weight;
} else if (support == uint8(VoteType.For)) {
proposalvote.forVotes += weight;
} else if (support == uint8(VoteType.Abstain)) {
proposalvote.abstainVotes += weight;
} else {
revert("GovernorVotingSimple: invalid value for enum VoteType");
}
}
/**
* @dev This empty reserved space is put in place to allow future versions to add new
* variables without shifting down storage in the inheritance chain.
* See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps
*/
uint256[49] private __gap;
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.6.0) (governance/extensions/GovernorPreventLateQuorum.sol)
pragma solidity ^0.8.0;
import "../GovernorUpgradeable.sol";
import "../../utils/math/MathUpgradeable.sol";
import "../../proxy/utils/Initializable.sol";
/**
* @dev A module that ensures there is a minimum voting period after quorum is reached. This prevents a large voter from
* swaying a vote and triggering quorum at the last minute, by ensuring there is always time for other voters to react
* and try to oppose the decision.
*
* If a vote causes quorum to be reached, the proposal's voting period may be extended so that it does not end before at
* least a given number of blocks have passed (the "vote extension" parameter). This parameter can be set by the
* governance executor (e.g. through a governance proposal).
*
* _Available since v4.5._
*/
abstract contract GovernorPreventLateQuorumUpgradeable is Initializable, GovernorUpgradeable {
using SafeCastUpgradeable for uint256;
using TimersUpgradeable for TimersUpgradeable.BlockNumber;
uint64 private _voteExtension;
mapping(uint256 => TimersUpgradeable.BlockNumber) private _extendedDeadlines;
/// @dev Emitted when a proposal deadline is pushed back due to reaching quorum late in its voting period.
event ProposalExtended(uint256 indexed proposalId, uint64 extendedDeadline);
/// @dev Emitted when the {lateQuorumVoteExtension} parameter is changed.
event LateQuorumVoteExtensionSet(uint64 oldVoteExtension, uint64 newVoteExtension);
/**
* @dev Initializes the vote extension parameter: the number of blocks that are required to pass since a proposal
* reaches quorum until its voting period ends. If necessary the voting period will be extended beyond the one set
* at proposal creation.
*/
function __GovernorPreventLateQuorum_init(uint64 initialVoteExtension) internal onlyInitializing {
__GovernorPreventLateQuorum_init_unchained(initialVoteExtension);
}
function __GovernorPreventLateQuorum_init_unchained(uint64 initialVoteExtension) internal onlyInitializing {
_setLateQuorumVoteExtension(initialVoteExtension);
}
/**
* @dev Returns the proposal deadline, which may have been extended beyond that set at proposal creation, if the
* proposal reached quorum late in the voting period. See {Governor-proposalDeadline}.
*/
function proposalDeadline(uint256 proposalId) public view virtual override returns (uint256) {
return MathUpgradeable.max(super.proposalDeadline(proposalId), _extendedDeadlines[proposalId].getDeadline());
}
/**
* @dev Casts a vote and detects if it caused quorum to be reached, potentially extending the voting period. See
* {Governor-_castVote}.
*
* May emit a {ProposalExtended} event.
*/
function _castVote(
uint256 proposalId,
address account,
uint8 support,
string memory reason,
bytes memory params
) internal virtual override returns (uint256) {
uint256 result = super._castVote(proposalId, account, support, reason, params);
TimersUpgradeable.BlockNumber storage extendedDeadline = _extendedDeadlines[proposalId];
if (extendedDeadline.isUnset() && _quorumReached(proposalId)) {
uint64 extendedDeadlineValue = block.number.toUint64() + lateQuorumVoteExtension();
if (extendedDeadlineValue > proposalDeadline(proposalId)) {
emit ProposalExtended(proposalId, extendedDeadlineValue);
}
extendedDeadline.setDeadline(extendedDeadlineValue);
}
return result;
}
/**
* @dev Returns the current value of the vote extension parameter: the number of blocks that are required to pass
* from the time a proposal reaches quorum until its voting period ends.
*/
function lateQuorumVoteExtension() public view virtual returns (uint64) {
return _voteExtension;
}
/**
* @dev Changes the {lateQuorumVoteExtension}. This operation can only be performed by the governance executor,
* generally through a governance proposal.
*
* Emits a {LateQuorumVoteExtensionSet} event.
*/
function setLateQuorumVoteExtension(uint64 newVoteExtension) public virtual onlyGovernance {
_setLateQuorumVoteExtension(newVoteExtension);
}
/**
* @dev Changes the {lateQuorumVoteExtension}. This is an internal function that can be exposed in a public function
* like {setLateQuorumVoteExtension} if another access control mechanism is needed.
*
* Emits a {LateQuorumVoteExtensionSet} event.
*/
function _setLateQuorumVoteExtension(uint64 newVoteExtension) internal virtual {
emit LateQuorumVoteExtensionSet(_voteExtension, newVoteExtension);
_voteExtension = newVoteExtension;
}
/**
* @dev This empty reserved space is put in place to allow future versions to add new
* variables without shifting down storage in the inheritance chain.
* See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps
*/
uint256[48] private __gap;
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (governance/extensions/GovernorSettings.sol)
pragma solidity ^0.8.0;
import "../GovernorUpgradeable.sol";
import "../../proxy/utils/Initializable.sol";
/**
* @dev Extension of {Governor} for settings updatable through governance.
*
* _Available since v4.4._
*/
abstract contract GovernorSettingsUpgradeable is Initializable, GovernorUpgradeable {
uint256 private _votingDelay;
uint256 private _votingPeriod;
uint256 private _proposalThreshold;
event VotingDelaySet(uint256 oldVotingDelay, uint256 newVotingDelay);
event VotingPeriodSet(uint256 oldVotingPeriod, uint256 newVotingPeriod);
event ProposalThresholdSet(uint256 oldProposalThreshold, uint256 newProposalThreshold);
/**
* @dev Initialize the governance parameters.
*/
function __GovernorSettings_init(
uint256 initialVotingDelay,
uint256 initialVotingPeriod,
uint256 initialProposalThreshold
) internal onlyInitializing {
__GovernorSettings_init_unchained(initialVotingDelay, initialVotingPeriod, initialProposalThreshold);
}
function __GovernorSettings_init_unchained(
uint256 initialVotingDelay,
uint256 initialVotingPeriod,
uint256 initialProposalThreshold
) internal onlyInitializing {
_setVotingDelay(initialVotingDelay);
_setVotingPeriod(initialVotingPeriod);
_setProposalThreshold(initialProposalThreshold);
}
/**
* @dev See {IGovernor-votingDelay}.
*/
function votingDelay() public view virtual override returns (uint256) {
return _votingDelay;
}
/**
* @dev See {IGovernor-votingPeriod}.
*/
function votingPeriod() public view virtual override returns (uint256) {
return _votingPeriod;
}
/**
* @dev See {Governor-proposalThreshold}.
*/
function proposalThreshold() public view virtual override returns (uint256) {
return _proposalThreshold;
}
/**
* @dev Update the voting delay. This operation can only be performed through a governance proposal.
*
* Emits a {VotingDelaySet} event.
*/
function setVotingDelay(uint256 newVotingDelay) public virtual onlyGovernance {
_setVotingDelay(newVotingDelay);
}
/**
* @dev Update the voting period. This operation can only be performed through a governance proposal.
*
* Emits a {VotingPeriodSet} event.
*/
function setVotingPeriod(uint256 newVotingPeriod) public virtual onlyGovernance {
_setVotingPeriod(newVotingPeriod);
}
/**
* @dev Update the proposal threshold. This operation can only be performed through a governance proposal.
*
* Emits a {ProposalThresholdSet} event.
*/
function setProposalThreshold(uint256 newProposalThreshold) public virtual onlyGovernance {
_setProposalThreshold(newProposalThreshold);
}
/**
* @dev Internal setter for the voting delay.
*
* Emits a {VotingDelaySet} event.
*/
function _setVotingDelay(uint256 newVotingDelay) internal virtual {
emit VotingDelaySet(_votingDelay, newVotingDelay);
_votingDelay = newVotingDelay;
}
/**
* @dev Internal setter for the voting period.
*
* Emits a {VotingPeriodSet} event.
*/
function _setVotingPeriod(uint256 newVotingPeriod) internal virtual {
// voting period must be at least one block long
require(newVotingPeriod > 0, "GovernorSettings: voting period too low");
emit VotingPeriodSet(_votingPeriod, newVotingPeriod);
_votingPeriod = newVotingPeriod;
}
/**
* @dev Internal setter for the proposal threshold.
*
* Emits a {ProposalThresholdSet} event.
*/
function _setProposalThreshold(uint256 newProposalThreshold) internal virtual {
emit ProposalThresholdSet(_proposalThreshold, newProposalThreshold);
_proposalThreshold = newProposalThreshold;
}
/**
* @dev This empty reserved space is put in place to allow future versions to add new
* variables without shifting down storage in the inheritance chain.
* See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps
*/
uint256[47] private __gap;
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.6.0) (governance/extensions/GovernorTimelockControl.sol)
pragma solidity ^0.8.0;
import "./IGovernorTimelockUpgradeable.sol";
import "../GovernorUpgradeable.sol";
import "../TimelockControllerUpgradeable.sol";
import "../../proxy/utils/Initializable.sol";
/**
* @dev Extension of {Governor} that binds the execution process to an instance of {TimelockController}. This adds a
* delay, enforced by the {TimelockController} to all successful proposal (in addition to the voting duration). The
* {Governor} needs the proposer (and ideally the executor) roles for the {Governor} to work properly.
*
* Using this model means the proposal will be operated by the {TimelockController} and not by the {Governor}. Thus,
* the assets and permissions must be attached to the {TimelockController}. Any asset sent to the {Governor} will be
* inaccessible.
*
* WARNING: Setting up the TimelockController to have additional proposers besides the governor is very risky, as it
* grants them powers that they must be trusted or known not to use: 1) {onlyGovernance} functions like {relay} are
* available to them through the timelock, and 2) approved governance proposals can be blocked by them, effectively
* executing a Denial of Service attack. This risk will be mitigated in a future release.
*
* _Available since v4.3._
*/
abstract contract GovernorTimelockControlUpgradeable is Initializable, IGovernorTimelockUpgradeable, GovernorUpgradeable {
TimelockControllerUpgradeable private _timelock;
mapping(uint256 => bytes32) private _timelockIds;
/**
* @dev Emitted when the timelock controller used for proposal execution is modified.
*/
event TimelockChange(address oldTimelock, address newTimelock);
/**
* @dev Set the timelock.
*/
function __GovernorTimelockControl_init(TimelockControllerUpgradeable timelockAddress) internal onlyInitializing {
__GovernorTimelockControl_init_unchained(timelockAddress);
}
function __GovernorTimelockControl_init_unchained(TimelockControllerUpgradeable timelockAddress) internal onlyInitializing {
_updateTimelock(timelockAddress);
}
/**
* @dev See {IERC165-supportsInterface}.
*/
function supportsInterface(bytes4 interfaceId) public view virtual override(IERC165Upgradeable, GovernorUpgradeable) returns (bool) {
return interfaceId == type(IGovernorTimelockUpgradeable).interfaceId || super.supportsInterface(interfaceId);
}
/**
* @dev Overridden version of the {Governor-state} function with added support for the `Queued` status.
*/
function state(uint256 proposalId) public view virtual override(IGovernorUpgradeable, GovernorUpgradeable) returns (ProposalState) {
ProposalState status = super.state(proposalId);
if (status != ProposalState.Succeeded) {
return status;
}
// core tracks execution, so we just have to check if successful proposal have been queued.
bytes32 queueid = _timelockIds[proposalId];
if (queueid == bytes32(0)) {
return status;
} else if (_timelock.isOperationDone(queueid)) {
return ProposalState.Executed;
} else if (_timelock.isOperationPending(queueid)) {
return ProposalState.Queued;
} else {
return ProposalState.Canceled;
}
}
/**
* @dev Public accessor to check the address of the timelock
*/
function timelock() public view virtual override returns (address) {
return address(_timelock);
}
/**
* @dev Public accessor to check the eta of a queued proposal
*/
function proposalEta(uint256 proposalId) public view virtual override returns (uint256) {
uint256 eta = _timelock.getTimestamp(_timelockIds[proposalId]);
return eta == 1 ? 0 : eta; // _DONE_TIMESTAMP (1) should be replaced with a 0 value
}
/**
* @dev Function to queue a proposal to the timelock.
*/
function queue(
address[] memory targets,
uint256[] memory values,
bytes[] memory calldatas,
bytes32 descriptionHash
) public virtual override returns (uint256) {
uint256 proposalId = hashProposal(targets, values, calldatas, descriptionHash);
require(state(proposalId) == ProposalState.Succeeded, "Governor: proposal not successful");
uint256 delay = _timelock.getMinDelay();
_timelockIds[proposalId] = _timelock.hashOperationBatch(targets, values, calldatas, 0, descriptionHash);
_timelock.scheduleBatch(targets, values, calldatas, 0, descriptionHash, delay);
emit ProposalQueued(proposalId, block.timestamp + delay);
return proposalId;
}
/**
* @dev Overridden execute function that run the already queued proposal through the timelock.
*/
function _execute(
uint256, /* proposalId */
address[] memory targets,
uint256[] memory values,
bytes[] memory calldatas,
bytes32 descriptionHash
) internal virtual override {
_timelock.executeBatch{value: msg.value}(targets, values, calldatas, 0, descriptionHash);
}
/**
* @dev Overridden version of the {Governor-_cancel} function to cancel the timelocked proposal if it as already
* been queued.
*/
// This function can reenter through the external call to the timelock, but we assume the timelock is trusted and
// well behaved (according to TimelockController) and this will not happen.
// slither-disable-next-line reentrancy-no-eth
function _cancel(
address[] memory targets,
uint256[] memory values,
bytes[] memory calldatas,
bytes32 descriptionHash
) internal virtual override returns (uint256) {
uint256 proposalId = super._cancel(targets, values, calldatas, descriptionHash);
if (_timelockIds[proposalId] != 0) {
_timelock.cancel(_timelockIds[proposalId]);
delete _timelockIds[proposalId];
}
return proposalId;
}
/**
* @dev Address through which the governor executes action. In this case, the timelock.
*/
function _executor() internal view virtual override returns (address) {
return address(_timelock);
}
/**
* @dev Public endpoint to update the underlying timelock instance. Restricted to the timelock itself, so updates
* must be proposed, scheduled, and executed through governance proposals.
*
* CAUTION: It is not recommended to change the timelock while there are other queued governance proposals.
*/
function updateTimelock(TimelockControllerUpgradeable newTimelock) external virtual onlyGovernance {
_updateTimelock(newTimelock);
}
function _updateTimelock(TimelockControllerUpgradeable newTimelock) private {
emit TimelockChange(address(_timelock), address(newTimelock));
_timelock = newTimelock;
}
/**
* @dev This empty reserved space is put in place to allow future versions to add new
* variables without shifting down storage in the inheritance chain.
* See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps
*/
uint256[48] private __gap;
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.2) (governance/extensions/GovernorVotesQuorumFraction.sol)
pragma solidity ^0.8.0;
import "./GovernorVotesUpgradeable.sol";
import "../../utils/CheckpointsUpgradeable.sol";
import "../../utils/math/SafeCastUpgradeable.sol";
import "../../proxy/utils/Initializable.sol";
/**
* @dev Extension of {Governor} for voting weight extraction from an {ERC20Votes} token and a quorum expressed as a
* fraction of the total supply.
*
* _Available since v4.3._
*/
abstract contract GovernorVotesQuorumFractionUpgradeable is Initializable, GovernorVotesUpgradeable {
using CheckpointsUpgradeable for CheckpointsUpgradeable.History;
uint256 private _quorumNumerator; // DEPRECATED
CheckpointsUpgradeable.History private _quorumNumeratorHistory;
event QuorumNumeratorUpdated(uint256 oldQuorumNumerator, uint256 newQuorumNumerator);
/**
* @dev Initialize quorum as a fraction of the token's total supply.
*
* The fraction is specified as `numerator / denominator`. By default the denominator is 100, so quorum is
* specified as a percent: a numerator of 10 corresponds to quorum being 10% of total supply. The denominator can be
* customized by overriding {quorumDenominator}.
*/
function __GovernorVotesQuorumFraction_init(uint256 quorumNumeratorValue) internal onlyInitializing {
__GovernorVotesQuorumFraction_init_unchained(quorumNumeratorValue);
}
function __GovernorVotesQuorumFraction_init_unchained(uint256 quorumNumeratorValue) internal onlyInitializing {
_updateQuorumNumerator(quorumNumeratorValue);
}
/**
* @dev Returns the current quorum numerator. See {quorumDenominator}.
*/
function quorumNumerator() public view virtual returns (uint256) {
return _quorumNumeratorHistory._checkpoints.length == 0 ? _quorumNumerator : _quorumNumeratorHistory.latest();
}
/**
* @dev Returns the quorum numerator at a specific block number. See {quorumDenominator}.
*/
function quorumNumerator(uint256 blockNumber) public view virtual returns (uint256) {
// If history is empty, fallback to old storage
uint256 length = _quorumNumeratorHistory._checkpoints.length;
if (length == 0) {
return _quorumNumerator;
}
// Optimistic search, check the latest checkpoint
CheckpointsUpgradeable.Checkpoint memory latest = _quorumNumeratorHistory._checkpoints[length - 1];
if (latest._blockNumber <= blockNumber) {
return latest._value;
}
// Otherwize, do the binary search
return _quorumNumeratorHistory.getAtBlock(blockNumber);
}
/**
* @dev Returns the quorum denominator. Defaults to 100, but may be overridden.
*/
function quorumDenominator() public view virtual returns (uint256) {
return 100;
}
/**
* @dev Returns the quorum for a block number, in terms of number of votes: `supply * numerator / denominator`.
*/
function quorum(uint256 blockNumber) public view virtual override returns (uint256) {
return (token.getPastTotalSupply(blockNumber) * quorumNumerator(blockNumber)) / quorumDenominator();
}
/**
* @dev Changes the quorum numerator.
*
* Emits a {QuorumNumeratorUpdated} event.
*
* Requirements:
*
* - Must be called through a governance proposal.
* - New numerator must be smaller or equal to the denominator.
*/
function updateQuorumNumerator(uint256 newQuorumNumerator) external virtual onlyGovernance {
_updateQuorumNumerator(newQuorumNumerator);
}
/**
* @dev Changes the quorum numerator.
*
* Emits a {QuorumNumeratorUpdated} event.
*
* Requirements:
*
* - New numerator must be smaller or equal to the denominator.
*/
function _updateQuorumNumerator(uint256 newQuorumNumerator) internal virtual {
require(
newQuorumNumerator <= quorumDenominator(),
"GovernorVotesQuorumFraction: quorumNumerator over quorumDenominator"
);
uint256 oldQuorumNumerator = quorumNumerator();
// Make sure we keep track of the original numerator in contracts upgraded from a version without checkpoints.
if (oldQuorumNumerator != 0 && _quorumNumeratorHistory._checkpoints.length == 0) {
_quorumNumeratorHistory._checkpoints.push(
CheckpointsUpgradeable.Checkpoint({_blockNumber: 0, _value: SafeCastUpgradeable.toUint224(oldQuorumNumerator)})
);
}
// Set new quorum for future proposals
_quorumNumeratorHistory.push(newQuorumNumerator);
emit QuorumNumeratorUpdated(oldQuorumNumerator, newQuorumNumerator);
}
/**
* @dev This empty reserved space is put in place to allow future versions to add new
* variables without shifting down storage in the inheritance chain.
* See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps
*/
uint256[48] private __gap;
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.6.0) (governance/extensions/GovernorVotes.sol)
pragma solidity ^0.8.0;
import "../GovernorUpgradeable.sol";
import "../utils/IVotesUpgradeable.sol";
import "../../proxy/utils/Initializable.sol";
/**
* @dev Extension of {Governor} for voting weight extraction from an {ERC20Votes} token, or since v4.5 an {ERC721Votes} token.
*
* _Available since v4.3._
*
* @custom:storage-size 51
*/
abstract contract GovernorVotesUpgradeable is Initializable, GovernorUpgradeable {
IVotesUpgradeable public token;
function __GovernorVotes_init(IVotesUpgradeable tokenAddress) internal onlyInitializing {
__GovernorVotes_init_unchained(tokenAddress);
}
function __GovernorVotes_init_unchained(IVotesUpgradeable tokenAddress) internal onlyInitializing {
token = tokenAddress;
}
/**
* Read the voting weight from the token's built in snapshot mechanism (see {Governor-_getVotes}).
*/
function _getVotes(
address account,
uint256 blockNumber,
bytes memory /*params*/
) internal view virtual override returns (uint256) {
return token.getPastVotes(account, blockNumber);
}
/**
* @dev This empty reserved space is put in place to allow future versions to add new
* variables without shifting down storage in the inheritance chain.
* See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps
*/
uint256[50] private __gap;
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (governance/extensions/IGovernorTimelock.sol)
pragma solidity ^0.8.0;
import "../IGovernorUpgradeable.sol";
import "../../proxy/utils/Initializable.sol";
/**
* @dev Extension of the {IGovernor} for timelock supporting modules.
*
* _Available since v4.3._
*/
abstract contract IGovernorTimelockUpgradeable is Initializable, IGovernorUpgradeable {
function __IGovernorTimelock_init() internal onlyInitializing {
}
function __IGovernorTimelock_init_unchained() internal onlyInitializing {
}
event ProposalQueued(uint256 proposalId, uint256 eta);
function timelock() public view virtual returns (address);
function proposalEta(uint256 proposalId) public view virtual returns (uint256);
function queue(
address[] memory targets,
uint256[] memory values,
bytes[] memory calldatas,
bytes32 descriptionHash
) public virtual returns (uint256 proposalId);
/**
* @dev This empty reserved space is put in place to allow future versions to add new
* variables without shifting down storage in the inheritance chain.
* See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps
*/
uint256[50] private __gap;
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.5.0) (governance/utils/IVotes.sol)
pragma solidity ^0.8.0;
/**
* @dev Common interface for {ERC20Votes}, {ERC721Votes}, and other {Votes}-enabled contracts.
*
* _Available since v4.5._
*/
interface IVotesUpgradeable {
/**
* @dev Emitted when an account changes their delegate.
*/
event DelegateChanged(address indexed delegator, address indexed fromDelegate, address indexed toDelegate);
/**
* @dev Emitted when a token transfer or delegate change results in changes to a delegate's number of votes.
*/
event DelegateVotesChanged(address indexed delegate, uint256 previousBalance, uint256 newBalance);
/**
* @dev Returns the current amount of votes that `account` has.
*/
function getVotes(address account) external view returns (uint256);
/**
* @dev Returns the amount of votes that `account` had at the end of a past block (`blockNumber`).
*/
function getPastVotes(address account, uint256 blockNumber) external view returns (uint256);
/**
* @dev Returns the total supply of votes available at the end of a past block (`blockNumber`).
*
* NOTE: This value is the sum of all available votes, which is not necessarily the sum of all delegated votes.
* Votes that have not been delegated are still part of total supply, even though they would not participate in a
* vote.
*/
function getPastTotalSupply(uint256 blockNumber) external view returns (uint256);
/**
* @dev Returns the delegate that `account` has chosen.
*/
function delegates(address account) external view returns (address);
/**
* @dev Delegates votes from the sender to `delegatee`.
*/
function delegate(address delegatee) external;
/**
* @dev Delegates votes from signer to `delegatee`.
*/
function delegateBySig(
address delegatee,
uint256 nonce,
uint256 expiry,
uint8 v,
bytes32 r,
bytes32 s
) external;
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.0) (proxy/utils/Initializable.sol)
pragma solidity ^0.8.2;
import "../../utils/AddressUpgradeable.sol";
/**
* @dev This is a base contract to aid in writing upgradeable contracts, or any kind of contract that will be deployed
* behind a proxy. Since proxied contracts do not make use of a constructor, it's common to move constructor logic to an
* external initializer function, usually called `initialize`. It then becomes necessary to protect this initializer
* function so it can only be called once. The {initializer} modifier provided by this contract will have this effect.
*
* The initialization functions use a version number. Once a version number is used, it is consumed and cannot be
* reused. This mechanism prevents re-execution of each "step" but allows the creation of new initialization steps in
* case an upgrade adds a module that needs to be initialized.
*
* For example:
*
* [.hljs-theme-light.nopadding]
* ```
* contract MyToken is ERC20Upgradeable {
* function initialize() initializer public {
* __ERC20_init("MyToken", "MTK");
* }
* }
* contract MyTokenV2 is MyToken, ERC20PermitUpgradeable {
* function initializeV2() reinitializer(2) public {
* __ERC20Permit_init("MyToken");
* }
* }
* ```
*
* TIP: To avoid leaving the proxy in an uninitialized state, the initializer function should be called as early as
* possible by providing the encoded function call as the `_data` argument to {ERC1967Proxy-constructor}.
*
* CAUTION: When used with inheritance, manual care must be taken to not invoke a parent initializer twice, or to ensure
* that all initializers are idempotent. This is not verified automatically as constructors are by Solidity.
*
* [CAUTION]
* ====
* Avoid leaving a contract uninitialized.
*
* An uninitialized contract can be taken over by an attacker. This applies to both a proxy and its implementation
* contract, which may impact the proxy. To prevent the implementation contract from being used, you should invoke
* the {_disableInitializers} function in the constructor to automatically lock it when it is deployed:
*
* [.hljs-theme-light.nopadding]
* ```
* /// @custom:oz-upgrades-unsafe-allow constructor
* constructor() {
* _disableInitializers();
* }
* ```
* ====
*/
abstract contract Initializable {
/**
* @dev Indicates that the contract has been initialized.
* @custom:oz-retyped-from bool
*/
uint8 private _initialized;
/**
* @dev Indicates that the contract is in the process of being initialized.
*/
bool private _initializing;
/**
* @dev Triggered when the contract has been initialized or reinitialized.
*/
event Initialized(uint8 version);
/**
* @dev A modifier that defines a protected initializer function that can be invoked at most once. In its scope,
* `onlyInitializing` functions can be used to initialize parent contracts. Equivalent to `reinitializer(1)`.
*/
modifier initializer() {
bool isTopLevelCall = !_initializing;
require(
(isTopLevelCall && _initialized < 1) || (!AddressUpgradeable.isContract(address(this)) && _initialized == 1),
"Initializable: contract is already initialized"
);
_initialized = 1;
if (isTopLevelCall) {
_initializing = true;
}
_;
if (isTopLevelCall) {
_initializing = false;
emit Initialized(1);
}
}
/**
* @dev A modifier that defines a protected reinitializer function that can be invoked at most once, and only if the
* contract hasn't been initialized to a greater version before. In its scope, `onlyInitializing` functions can be
* used to initialize parent contracts.
*
* `initializer` is equivalent to `reinitializer(1)`, so a reinitializer may be used after the original
* initialization step. This is essential to configure modules that are added through upgrades and that require
* initialization.
*
* Note that versions can jump in increments greater than 1; this implies that if multiple reinitializers coexist in
* a contract, executing them in the right order is up to the developer or operator.
*/
modifier reinitializer(uint8 version) {
require(!_initializing && _initialized < version, "Initializable: contract is already initialized");
_initialized = version;
_initializing = true;
_;
_initializing = false;
emit Initialized(version);
}
/**
* @dev Modifier to protect an initialization function so that it can only be invoked by functions with the
* {initializer} and {reinitializer} modifiers, directly or indirectly.
*/
modifier onlyInitializing() {
require(_initializing, "Initializable: contract is not initializing");
_;
}
/**
* @dev Locks the contract, preventing any future reinitialization. This cannot be part of an initializer call.
* Calling this in the constructor of a contract will prevent that contract from being initialized or reinitialized
* to any version. It is recommended to use this to lock implementation contracts that are designed to be called
* through proxies.
*/
function _disableInitializers() internal virtual {
require(!_initializing, "Initializable: contract is initializing");
if (_initialized < type(uint8).max) {
_initialized = type(uint8).max;
emit Initialized(type(uint8).max);
}
}
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.5.0) (token/ERC1155/IERC1155Receiver.sol)
pragma solidity ^0.8.0;
import "../../utils/introspection/IERC165Upgradeable.sol";
/**
* @dev _Available since v3.1._
*/
interface IERC1155ReceiverUpgradeable is IERC165Upgradeable {
/**
* @dev Handles the receipt of a single ERC1155 token type. This function is
* called at the end of a `safeTransferFrom` after the balance has been updated.
*
* NOTE: To accept the transfer, this must return
* `bytes4(keccak256("onERC1155Received(address,address,uint256,uint256,bytes)"))`
* (i.e. 0xf23a6e61, or its own function selector).
*
* @param operator The address which initiated the transfer (i.e. msg.sender)
* @param from The address which previously owned the token
* @param id The ID of the token being transferred
* @param value The amount of tokens being transferred
* @param data Additional data with no specified format
* @return `bytes4(keccak256("onERC1155Received(address,address,uint256,uint256,bytes)"))` if transfer is allowed
*/
function onERC1155Received(
address operator,
address from,
uint256 id,
uint256 value,
bytes calldata data
) external returns (bytes4);
/**
* @dev Handles the receipt of a multiple ERC1155 token types. This function
* is called at the end of a `safeBatchTransferFrom` after the balances have
* been updated.
*
* NOTE: To accept the transfer(s), this must return
* `bytes4(keccak256("onERC1155BatchReceived(address,address,uint256[],uint256[],bytes)"))`
* (i.e. 0xbc197c81, or its own function selector).
*
* @param operator The address which initiated the batch transfer (i.e. msg.sender)
* @param from The address which previously owned the token
* @param ids An array containing ids of each token being transferred (order and length must match values array)
* @param values An array containing amounts of each token being transferred (order and length must match ids array)
* @param data Additional data with no specified format
* @return `bytes4(keccak256("onERC1155BatchReceived(address,address,uint256[],uint256[],bytes)"))` if transfer is allowed
*/
function onERC1155BatchReceived(
address operator,
address from,
uint256[] calldata ids,
uint256[] calldata values,
bytes calldata data
) external returns (bytes4);
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.6.0) (token/ERC721/IERC721Receiver.sol)
pragma solidity ^0.8.0;
/**
* @title ERC721 token receiver interface
* @dev Interface for any contract that wants to support safeTransfers
* from ERC721 asset contracts.
*/
interface IERC721ReceiverUpgradeable {
/**
* @dev Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom}
* by `operator` from `from`, this function is called.
*
* It must return its Solidity selector to confirm the token transfer.
* If any other value is returned or the interface is not implemented by the recipient, the transfer will be reverted.
*
* The selector can be obtained in Solidity with `IERC721Receiver.onERC721Received.selector`.
*/
function onERC721Received(
address operator,
address from,
uint256 tokenId,
bytes calldata data
) external returns (bytes4);
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.0) (utils/Address.sol)
pragma solidity ^0.8.1;
/**
* @dev Collection of functions related to the address type
*/
library AddressUpgradeable {
/**
* @dev Returns true if `account` is a contract.
*
* [IMPORTANT]
* ====
* It is unsafe to assume that an address for which this function returns
* false is an externally-owned account (EOA) and not a contract.
*
* Among others, `isContract` will return false for the following
* types of addresses:
*
* - an externally-owned account
* - a contract in construction
* - an address where a contract will be created
* - an address where a contract lived, but was destroyed
* ====
*
* [IMPORTANT]
* ====
* You shouldn't rely on `isContract` to protect against flash loan attacks!
*
* Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets
* like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract
* constructor.
* ====
*/
function isContract(address account) internal view returns (bool) {
// This method relies on extcodesize/address.code.length, which returns 0
// for contracts in construction, since the code is only stored at the end
// of the constructor execution.
return account.code.length > 0;
}
/**
* @dev Replacement for Solidity's `transfer`: sends `amount` wei to
* `recipient`, forwarding all available gas and reverting on errors.
*
* https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
* of certain opcodes, possibly making contracts go over the 2300 gas limit
* imposed by `transfer`, making them unable to receive funds via
* `transfer`. {sendValue} removes this limitation.
*
* https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
*
* IMPORTANT: because control is transferred to `recipient`, care must be
* taken to not create reentrancy vulnerabilities. Consider using
* {ReentrancyGuard} or the
* https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
*/
function sendValue(address payable recipient, uint256 amount) internal {
require(address(this).balance >= amount, "Address: insufficient balance");
(bool success, ) = recipient.call{value: amount}("");
require(success, "Address: unable to send value, recipient may have reverted");
}
/**
* @dev Performs a Solidity function call using a low level `call`. A
* plain `call` is an unsafe replacement for a function call: use this
* function instead.
*
* If `target` reverts with a revert reason, it is bubbled up by this
* function (like regular Solidity function calls).
*
* Returns the raw returned data. To convert to the expected return value,
* use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
*
* Requirements:
*
* - `target` must be a contract.
* - calling `target` with `data` must not revert.
*
* _Available since v3.1._
*/
function functionCall(address target, bytes memory data) internal returns (bytes memory) {
return functionCall(target, data, "Address: low-level call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
* `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCall(
address target,
bytes memory data,
string memory errorMessage
) internal returns (bytes memory) {
return functionCallWithValue(target, data, 0, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but also transferring `value` wei to `target`.
*
* Requirements:
*
* - the calling contract must have an ETH balance of at least `value`.
* - the called Solidity function must be `payable`.
*
* _Available since v3.1._
*/
function functionCallWithValue(
address target,
bytes memory data,
uint256 value
) internal returns (bytes memory) {
return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
}
/**
* @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
* with `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCallWithValue(
address target,
bytes memory data,
uint256 value,
string memory errorMessage
) internal returns (bytes memory) {
require(address(this).balance >= value, "Address: insufficient balance for call");
require(isContract(target), "Address: call to non-contract");
(bool success, bytes memory returndata) = target.call{value: value}(data);
return verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but performing a static call.
*
* _Available since v3.3._
*/
function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
return functionStaticCall(target, data, "Address: low-level static call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
* but performing a static call.
*
* _Available since v3.3._
*/
function functionStaticCall(
address target,
bytes memory data,
string memory errorMessage
) internal view returns (bytes memory) {
require(isContract(target), "Address: static call to non-contract");
(bool success, bytes memory returndata) = target.staticcall(data);
return verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the
* revert reason using the provided one.
*
* _Available since v4.3._
*/
function verifyCallResult(
bool success,
bytes memory returndata,
string memory errorMessage
) internal pure returns (bytes memory) {
if (success) {
return returndata;
} else {
// Look for revert reason and bubble it up if present
if (returndata.length > 0) {
// The easiest way to bubble the revert reason is using memory via assembly
/// @solidity memory-safe-assembly
assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
} else {
revert(errorMessage);
}
}
}
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.5.0) (utils/Checkpoints.sol)
pragma solidity ^0.8.0;
import "./math/MathUpgradeable.sol";
import "./math/SafeCastUpgradeable.sol";
/**
* @dev This library defines the `History` struct, for checkpointing values as they change at different points in
* time, and later looking up past values by block number. See {Votes} as an example.
*
* To create a history of checkpoints define a variable type `Checkpoints.History` in your contract, and store a new
* checkpoint for the current transaction block using the {push} function.
*
* _Available since v4.5._
*/
library CheckpointsUpgradeable {
struct Checkpoint {
uint32 _blockNumber;
uint224 _value;
}
struct History {
Checkpoint[] _checkpoints;
}
/**
* @dev Returns the value in the latest checkpoint, or zero if there are no checkpoints.
*/
function latest(History storage self) internal view returns (uint256) {
uint256 pos = self._checkpoints.length;
return pos == 0 ? 0 : self._checkpoints[pos - 1]._value;
}
/**
* @dev Returns the value at a given block number. If a checkpoint is not available at that block, the closest one
* before it is returned, or zero otherwise.
*/
function getAtBlock(History storage self, uint256 blockNumber) internal view returns (uint256) {
require(blockNumber < block.number, "Checkpoints: block not yet mined");
uint256 high = self._checkpoints.length;
uint256 low = 0;
while (low < high) {
uint256 mid = MathUpgradeable.average(low, high);
if (self._checkpoints[mid]._blockNumber > blockNumber) {
high = mid;
} else {
low = mid + 1;
}
}
return high == 0 ? 0 : self._checkpoints[high - 1]._value;
}
/**
* @dev Pushes a value onto a History so that it is stored as the checkpoint for the current block.
*
* Returns previous value and new value.
*/
function push(History storage self, uint256 value) internal returns (uint256, uint256) {
uint256 pos = self._checkpoints.length;
uint256 old = latest(self);
if (pos > 0 && self._checkpoints[pos - 1]._blockNumber == block.number) {
self._checkpoints[pos - 1]._value = SafeCastUpgradeable.toUint224(value);
} else {
self._checkpoints.push(
Checkpoint({_blockNumber: SafeCastUpgradeable.toUint32(block.number), _value: SafeCastUpgradeable.toUint224(value)})
);
}
return (old, value);
}
/**
* @dev Pushes a value onto a History, by updating the latest value using binary operation `op`. The new value will
* be set to `op(latest, delta)`.
*
* Returns previous value and new value.
*/
function push(
History storage self,
function(uint256, uint256) view returns (uint256) op,
uint256 delta
) internal returns (uint256, uint256) {
return push(self, op(latest(self), delta));
}
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/Context.sol)
pragma solidity ^0.8.0;
import "../proxy/utils/Initializable.sol";
/**
* @dev Provides information about the current execution context, including the
* sender of the transaction and its data. While these are generally available
* via msg.sender and msg.data, they should not be accessed in such a direct
* manner, since when dealing with meta-transactions the account sending and
* paying for execution may not be the actual sender (as far as an application
* is concerned).
*
* This contract is only required for intermediate, library-like contracts.
*/
abstract contract ContextUpgradeable is Initializable {
function __Context_init() internal onlyInitializing {
}
function __Context_init_unchained() internal onlyInitializing {
}
function _msgSender() internal view virtual returns (address) {
return msg.sender;
}
function _msgData() internal view virtual returns (bytes calldata) {
return msg.data;
}
/**
* @dev This empty reserved space is put in place to allow future versions to add new
* variables without shifting down storage in the inheritance chain.
* See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps
*/
uint256[50] private __gap;
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.0) (utils/Strings.sol)
pragma solidity ^0.8.0;
/**
* @dev String operations.
*/
library StringsUpgradeable {
bytes16 private constant _HEX_SYMBOLS = "0123456789abcdef";
uint8 private constant _ADDRESS_LENGTH = 20;
/**
* @dev Converts a `uint256` to its ASCII `string` decimal representation.
*/
function toString(uint256 value) internal pure returns (string memory) {
// Inspired by OraclizeAPI's implementation - MIT licence
// https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol
if (value == 0) {
return "0";
}
uint256 temp = value;
uint256 digits;
while (temp != 0) {
digits++;
temp /= 10;
}
bytes memory buffer = new bytes(digits);
while (value != 0) {
digits -= 1;
buffer[digits] = bytes1(uint8(48 + uint256(value % 10)));
value /= 10;
}
return string(buffer);
}
/**
* @dev Converts a `uint256` to its ASCII `string` hexadecimal representation.
*/
function toHexString(uint256 value) internal pure returns (string memory) {
if (value == 0) {
return "0x00";
}
uint256 temp = value;
uint256 length = 0;
while (temp != 0) {
length++;
temp >>= 8;
}
return toHexString(value, length);
}
/**
* @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length.
*/
function toHexString(uint256 value, uint256 length) internal pure returns (string memory) {
bytes memory buffer = new bytes(2 * length + 2);
buffer[0] = "0";
buffer[1] = "x";
for (uint256 i = 2 * length + 1; i > 1; --i) {
buffer[i] = _HEX_SYMBOLS[value & 0xf];
value >>= 4;
}
require(value == 0, "Strings: hex length insufficient");
return string(buffer);
}
/**
* @dev Converts an `address` with fixed length of 20 bytes to its not checksummed ASCII `string` hexadecimal representation.
*/
function toHexString(address addr) internal pure returns (string memory) {
return toHexString(uint256(uint160(addr)), _ADDRESS_LENGTH);
}
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/Timers.sol)
pragma solidity ^0.8.0;
/**
* @dev Tooling for timepoints, timers and delays
*/
library TimersUpgradeable {
struct Timestamp {
uint64 _deadline;
}
function getDeadline(Timestamp memory timer) internal pure returns (uint64) {
return timer._deadline;
}
function setDeadline(Timestamp storage timer, uint64 timestamp) internal {
timer._deadline = timestamp;
}
function reset(Timestamp storage timer) internal {
timer._deadline = 0;
}
function isUnset(Timestamp memory timer) internal pure returns (bool) {
return timer._deadline == 0;
}
function isStarted(Timestamp memory timer) internal pure returns (bool) {
return timer._deadline > 0;
}
function isPending(Timestamp memory timer) internal view returns (bool) {
return timer._deadline > block.timestamp;
}
function isExpired(Timestamp memory timer) internal view returns (bool) {
return isStarted(timer) && timer._deadline <= block.timestamp;
}
struct BlockNumber {
uint64 _deadline;
}
function getDeadline(BlockNumber memory timer) internal pure returns (uint64) {
return timer._deadline;
}
function setDeadline(BlockNumber storage timer, uint64 timestamp) internal {
timer._deadline = timestamp;
}
function reset(BlockNumber storage timer) internal {
timer._deadline = 0;
}
function isUnset(BlockNumber memory timer) internal pure returns (bool) {
return timer._deadline == 0;
}
function isStarted(BlockNumber memory timer) internal pure returns (bool) {
return timer._deadline > 0;
}
function isPending(BlockNumber memory timer) internal view returns (bool) {
return timer._deadline > block.number;
}
function isExpired(BlockNumber memory timer) internal view returns (bool) {
return isStarted(timer) && timer._deadline <= block.number;
}
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.3) (utils/cryptography/ECDSA.sol)
pragma solidity ^0.8.0;
import "../StringsUpgradeable.sol";
/**
* @dev Elliptic Curve Digital Signature Algorithm (ECDSA) operations.
*
* These functions can be used to verify that a message was signed by the holder
* of the private keys of a given address.
*/
library ECDSAUpgradeable {
enum RecoverError {
NoError,
InvalidSignature,
InvalidSignatureLength,
InvalidSignatureS,
InvalidSignatureV
}
function _throwError(RecoverError error) private pure {
if (error == RecoverError.NoError) {
return; // no error: do nothing
} else if (error == RecoverError.InvalidSignature) {
revert("ECDSA: invalid signature");
} else if (error == RecoverError.InvalidSignatureLength) {
revert("ECDSA: invalid signature length");
} else if (error == RecoverError.InvalidSignatureS) {
revert("ECDSA: invalid signature 's' value");
} else if (error == RecoverError.InvalidSignatureV) {
revert("ECDSA: invalid signature 'v' value");
}
}
/**
* @dev Returns the address that signed a hashed message (`hash`) with
* `signature` or error string. This address can then be used for verification purposes.
*
* The `ecrecover` EVM opcode allows for malleable (non-unique) signatures:
* this function rejects them by requiring the `s` value to be in the lower
* half order, and the `v` value to be either 27 or 28.
*
* IMPORTANT: `hash` _must_ be the result of a hash operation for the
* verification to be secure: it is possible to craft signatures that
* recover to arbitrary addresses for non-hashed data. A safe way to ensure
* this is by receiving a hash of the original message (which may otherwise
* be too long), and then calling {toEthSignedMessageHash} on it.
*
* Documentation for signature generation:
* - with https://web3js.readthedocs.io/en/v1.3.4/web3-eth-accounts.html#sign[Web3.js]
* - with https://docs.ethers.io/v5/api/signer/#Signer-signMessage[ethers]
*
* _Available since v4.3._
*/
function tryRecover(bytes32 hash, bytes memory signature) internal pure returns (address, RecoverError) {
if (signature.length == 65) {
bytes32 r;
bytes32 s;
uint8 v;
// ecrecover takes the signature parameters, and the only way to get them
// currently is to use assembly.
/// @solidity memory-safe-assembly
assembly {
r := mload(add(signature, 0x20))
s := mload(add(signature, 0x40))
v := byte(0, mload(add(signature, 0x60)))
}
return tryRecover(hash, v, r, s);
} else {
return (address(0), RecoverError.InvalidSignatureLength);
}
}
/**
* @dev Returns the address that signed a hashed message (`hash`) with
* `signature`. This address can then be used for verification purposes.
*
* The `ecrecover` EVM opcode allows for malleable (non-unique) signatures:
* this function rejects them by requiring the `s` value to be in the lower
* half order, and the `v` value to be either 27 or 28.
*
* IMPORTANT: `hash` _must_ be the result of a hash operation for the
* verification to be secure: it is possible to craft signatures that
* recover to arbitrary addresses for non-hashed data. A safe way to ensure
* this is by receiving a hash of the original message (which may otherwise
* be too long), and then calling {toEthSignedMessageHash} on it.
*/
function recover(bytes32 hash, bytes memory signature) internal pure returns (address) {
(address recovered, RecoverError error) = tryRecover(hash, signature);
_throwError(error);
return recovered;
}
/**
* @dev Overload of {ECDSA-tryRecover} that receives the `r` and `vs` short-signature fields separately.
*
* See https://eips.ethereum.org/EIPS/eip-2098[EIP-2098 short signatures]
*
* _Available since v4.3._
*/
function tryRecover(
bytes32 hash,
bytes32 r,
bytes32 vs
) internal pure returns (address, RecoverError) {
bytes32 s = vs & bytes32(0x7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff);
uint8 v = uint8((uint256(vs) >> 255) + 27);
return tryRecover(hash, v, r, s);
}
/**
* @dev Overload of {ECDSA-recover} that receives the `r and `vs` short-signature fields separately.
*
* _Available since v4.2._
*/
function recover(
bytes32 hash,
bytes32 r,
bytes32 vs
) internal pure returns (address) {
(address recovered, RecoverError error) = tryRecover(hash, r, vs);
_throwError(error);
return recovered;
}
/**
* @dev Overload of {ECDSA-tryRecover} that receives the `v`,
* `r` and `s` signature fields separately.
*
* _Available since v4.3._
*/
function tryRecover(
bytes32 hash,
uint8 v,
bytes32 r,
bytes32 s
) internal pure returns (address, RecoverError) {
// EIP-2 still allows signature malleability for ecrecover(). Remove this possibility and make the signature
// unique. Appendix F in the Ethereum Yellow paper (https://ethereum.github.io/yellowpaper/paper.pdf), defines
// the valid range for s in (301): 0 < s < secp256k1n ÷ 2 + 1, and for v in (302): v ∈ {27, 28}. Most
// signatures from current libraries generate a unique signature with an s-value in the lower half order.
//
// If your library generates malleable signatures, such as s-values in the upper range, calculate a new s-value
// with 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEBAAEDCE6AF48A03BBFD25E8CD0364141 - s1 and flip v from 27 to 28 or
// vice versa. If your library also generates signatures with 0/1 for v instead 27/28, add 27 to v to accept
// these malleable signatures as well.
if (uint256(s) > 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF5D576E7357A4501DDFE92F46681B20A0) {
return (address(0), RecoverError.InvalidSignatureS);
}
if (v != 27 && v != 28) {
return (address(0), RecoverError.InvalidSignatureV);
}
// If the signature is valid (and not malleable), return the signer address
address signer = ecrecover(hash, v, r, s);
if (signer == address(0)) {
return (address(0), RecoverError.InvalidSignature);
}
return (signer, RecoverError.NoError);
}
/**
* @dev Overload of {ECDSA-recover} that receives the `v`,
* `r` and `s` signature fields separately.
*/
function recover(
bytes32 hash,
uint8 v,
bytes32 r,
bytes32 s
) internal pure returns (address) {
(address recovered, RecoverError error) = tryRecover(hash, v, r, s);
_throwError(error);
return recovered;
}
/**
* @dev Returns an Ethereum Signed Message, created from a `hash`. This
* produces hash corresponding to the one signed with the
* https://eth.wiki/json-rpc/API#eth_sign[`eth_sign`]
* JSON-RPC method as part of EIP-191.
*
* See {recover}.
*/
function toEthSignedMessageHash(bytes32 hash) internal pure returns (bytes32) {
// 32 is the length in bytes of hash,
// enforced by the type signature above
return keccak256(abi.encodePacked("\x19Ethereum Signed Message:\n32", hash));
}
/**
* @dev Returns an Ethereum Signed Message, created from `s`. This
* produces hash corresponding to the one signed with the
* https://eth.wiki/json-rpc/API#eth_sign[`eth_sign`]
* JSON-RPC method as part of EIP-191.
*
* See {recover}.
*/
function toEthSignedMessageHash(bytes memory s) internal pure returns (bytes32) {
return keccak256(abi.encodePacked("\x19Ethereum Signed Message:\n", StringsUpgradeable.toString(s.length), s));
}
/**
* @dev Returns an Ethereum Signed Typed Data, created from a
* `domainSeparator` and a `structHash`. This produces hash corresponding
* to the one signed with the
* https://eips.ethereum.org/EIPS/eip-712[`eth_signTypedData`]
* JSON-RPC method as part of EIP-712.
*
* See {recover}.
*/
function toTypedDataHash(bytes32 domainSeparator, bytes32 structHash) internal pure returns (bytes32) {
return keccak256(abi.encodePacked("\x19\x01", domainSeparator, structHash));
}
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/cryptography/draft-EIP712.sol)
pragma solidity ^0.8.0;
import "./ECDSAUpgradeable.sol";
import "../../proxy/utils/Initializable.sol";
/**
* @dev https://eips.ethereum.org/EIPS/eip-712[EIP 712] is a standard for hashing and signing of typed structured data.
*
* The encoding specified in the EIP is very generic, and such a generic implementation in Solidity is not feasible,
* thus this contract does not implement the encoding itself. Protocols need to implement the type-specific encoding
* they need in their contracts using a combination of `abi.encode` and `keccak256`.
*
* This contract implements the EIP 712 domain separator ({_domainSeparatorV4}) that is used as part of the encoding
* scheme, and the final step of the encoding to obtain the message digest that is then signed via ECDSA
* ({_hashTypedDataV4}).
*
* The implementation of the domain separator was designed to be as efficient as possible while still properly updating
* the chain id to protect against replay attacks on an eventual fork of the chain.
*
* NOTE: This contract implements the version of the encoding known as "v4", as implemented by the JSON RPC method
* https://docs.metamask.io/guide/signing-data.html[`eth_signTypedDataV4` in MetaMask].
*
* _Available since v3.4._
*
* @custom:storage-size 52
*/
abstract contract EIP712Upgradeable is Initializable {
/* solhint-disable var-name-mixedcase */
bytes32 private _HASHED_NAME;
bytes32 private _HASHED_VERSION;
bytes32 private constant _TYPE_HASH = keccak256("EIP712Domain(string name,string version,uint256 chainId,address verifyingContract)");
/* solhint-enable var-name-mixedcase */
/**
* @dev Initializes the domain separator and parameter caches.
*
* The meaning of `name` and `version` is specified in
* https://eips.ethereum.org/EIPS/eip-712#definition-of-domainseparator[EIP 712]:
*
* - `name`: the user readable name of the signing domain, i.e. the name of the DApp or the protocol.
* - `version`: the current major version of the signing domain.
*
* NOTE: These parameters cannot be changed except through a xref:learn::upgrading-smart-contracts.adoc[smart
* contract upgrade].
*/
function __EIP712_init(string memory name, string memory version) internal onlyInitializing {
__EIP712_init_unchained(name, version);
}
function __EIP712_init_unchained(string memory name, string memory version) internal onlyInitializing {
bytes32 hashedName = keccak256(bytes(name));
bytes32 hashedVersion = keccak256(bytes(version));
_HASHED_NAME = hashedName;
_HASHED_VERSION = hashedVersion;
}
/**
* @dev Returns the domain separator for the current chain.
*/
function _domainSeparatorV4() internal view returns (bytes32) {
return _buildDomainSeparator(_TYPE_HASH, _EIP712NameHash(), _EIP712VersionHash());
}
function _buildDomainSeparator(
bytes32 typeHash,
bytes32 nameHash,
bytes32 versionHash
) private view returns (bytes32) {
return keccak256(abi.encode(typeHash, nameHash, versionHash, block.chainid, address(this)));
}
/**
* @dev Given an already https://eips.ethereum.org/EIPS/eip-712#definition-of-hashstruct[hashed struct], this
* function returns the hash of the fully encoded EIP712 message for this domain.
*
* This hash can be used together with {ECDSA-recover} to obtain the signer of a message. For example:
*
* ```solidity
* bytes32 digest = _hashTypedDataV4(keccak256(abi.encode(
* keccak256("Mail(address to,string contents)"),
* mailTo,
* keccak256(bytes(mailContents))
* )));
* address signer = ECDSA.recover(digest, signature);
* ```
*/
function _hashTypedDataV4(bytes32 structHash) internal view virtual returns (bytes32) {
return ECDSAUpgradeable.toTypedDataHash(_domainSeparatorV4(), structHash);
}
/**
* @dev The hash of the name parameter for the EIP712 domain.
*
* NOTE: This function reads from storage by default, but can be redefined to return a constant value if gas costs
* are a concern.
*/
function _EIP712NameHash() internal virtual view returns (bytes32) {
return _HASHED_NAME;
}
/**
* @dev The hash of the version parameter for the EIP712 domain.
*
* NOTE: This function reads from storage by default, but can be redefined to return a constant value if gas costs
* are a concern.
*/
function _EIP712VersionHash() internal virtual view returns (bytes32) {
return _HASHED_VERSION;
}
/**
* @dev This empty reserved space is put in place to allow future versions to add new
* variables without shifting down storage in the inheritance chain.
* See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps
*/
uint256[50] private __gap;
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/introspection/ERC165.sol)
pragma solidity ^0.8.0;
import "./IERC165Upgradeable.sol";
import "../../proxy/utils/Initializable.sol";
/**
* @dev Implementation of the {IERC165} interface.
*
* Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check
* for the additional interface id that will be supported. For example:
*
* ```solidity
* function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
* return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId);
* }
* ```
*
* Alternatively, {ERC165Storage} provides an easier to use but more expensive implementation.
*/
abstract contract ERC165Upgradeable is Initializable, IERC165Upgradeable {
function __ERC165_init() internal onlyInitializing {
}
function __ERC165_init_unchained() internal onlyInitializing {
}
/**
* @dev See {IERC165-supportsInterface}.
*/
function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
return interfaceId == type(IERC165Upgradeable).interfaceId;
}
/**
* @dev This empty reserved space is put in place to allow future versions to add new
* variables without shifting down storage in the inheritance chain.
* See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps
*/
uint256[50] private __gap;
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/introspection/IERC165.sol)
pragma solidity ^0.8.0;
/**
* @dev Interface of the ERC165 standard, as defined in the
* https://eips.ethereum.org/EIPS/eip-165[EIP].
*
* Implementers can declare support of contract interfaces, which can then be
* queried by others ({ERC165Checker}).
*
* For an implementation, see {ERC165}.
*/
interface IERC165Upgradeable {
/**
* @dev Returns true if this contract implements the interface defined by
* `interfaceId`. See the corresponding
* https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section]
* to learn more about how these ids are created.
*
* This function call must use less than 30 000 gas.
*/
function supportsInterface(bytes4 interfaceId) external view returns (bool);
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.0) (utils/math/Math.sol)
pragma solidity ^0.8.0;
/**
* @dev Standard math utilities missing in the Solidity language.
*/
library MathUpgradeable {
enum Rounding {
Down, // Toward negative infinity
Up, // Toward infinity
Zero // Toward zero
}
/**
* @dev Returns the largest of two numbers.
*/
function max(uint256 a, uint256 b) internal pure returns (uint256) {
return a >= b ? a : b;
}
/**
* @dev Returns the smallest of two numbers.
*/
function min(uint256 a, uint256 b) internal pure returns (uint256) {
return a < b ? a : b;
}
/**
* @dev Returns the average of two numbers. The result is rounded towards
* zero.
*/
function average(uint256 a, uint256 b) internal pure returns (uint256) {
// (a + b) / 2 can overflow.
return (a & b) + (a ^ b) / 2;
}
/**
* @dev Returns the ceiling of the division of two numbers.
*
* This differs from standard division with `/` in that it rounds up instead
* of rounding down.
*/
function ceilDiv(uint256 a, uint256 b) internal pure returns (uint256) {
// (a + b - 1) / b can overflow on addition, so we distribute.
return a == 0 ? 0 : (a - 1) / b + 1;
}
/**
* @notice Calculates floor(x * y / denominator) with full precision. Throws if result overflows a uint256 or denominator == 0
* @dev Original credit to Remco Bloemen under MIT license (https://xn--2-umb.com/21/muldiv)
* with further edits by Uniswap Labs also under MIT license.
*/
function mulDiv(
uint256 x,
uint256 y,
uint256 denominator
) internal pure returns (uint256 result) {
unchecked {
// 512-bit multiply [prod1 prod0] = x * y. Compute the product mod 2^256 and mod 2^256 - 1, then use
// use the Chinese Remainder Theorem to reconstruct the 512 bit result. The result is stored in two 256
// variables such that product = prod1 * 2^256 + prod0.
uint256 prod0; // Least significant 256 bits of the product
uint256 prod1; // Most significant 256 bits of the product
assembly {
let mm := mulmod(x, y, not(0))
prod0 := mul(x, y)
prod1 := sub(sub(mm, prod0), lt(mm, prod0))
}
// Handle non-overflow cases, 256 by 256 division.
if (prod1 == 0) {
return prod0 / denominator;
}
// Make sure the result is less than 2^256. Also prevents denominator == 0.
require(denominator > prod1);
///////////////////////////////////////////////
// 512 by 256 division.
///////////////////////////////////////////////
// Make division exact by subtracting the remainder from [prod1 prod0].
uint256 remainder;
assembly {
// Compute remainder using mulmod.
remainder := mulmod(x, y, denominator)
// Subtract 256 bit number from 512 bit number.
prod1 := sub(prod1, gt(remainder, prod0))
prod0 := sub(prod0, remainder)
}
// Factor powers of two out of denominator and compute largest power of two divisor of denominator. Always >= 1.
// See https://cs.stackexchange.com/q/138556/92363.
// Does not overflow because the denominator cannot be zero at this stage in the function.
uint256 twos = denominator & (~denominator + 1);
assembly {
// Divide denominator by twos.
denominator := div(denominator, twos)
// Divide [prod1 prod0] by twos.
prod0 := div(prod0, twos)
// Flip twos such that it is 2^256 / twos. If twos is zero, then it becomes one.
twos := add(div(sub(0, twos), twos), 1)
}
// Shift in bits from prod1 into prod0.
prod0 |= prod1 * twos;
// Invert denominator mod 2^256. Now that denominator is an odd number, it has an inverse modulo 2^256 such
// that denominator * inv = 1 mod 2^256. Compute the inverse by starting with a seed that is correct for
// four bits. That is, denominator * inv = 1 mod 2^4.
uint256 inverse = (3 * denominator) ^ 2;
// Use the Newton-Raphson iteration to improve the precision. Thanks to Hensel's lifting lemma, this also works
// in modular arithmetic, doubling the correct bits in each step.
inverse *= 2 - denominator * inverse; // inverse mod 2^8
inverse *= 2 - denominator * inverse; // inverse mod 2^16
inverse *= 2 - denominator * inverse; // inverse mod 2^32
inverse *= 2 - denominator * inverse; // inverse mod 2^64
inverse *= 2 - denominator * inverse; // inverse mod 2^128
inverse *= 2 - denominator * inverse; // inverse mod 2^256
// Because the division is now exact we can divide by multiplying with the modular inverse of denominator.
// This will give us the correct result modulo 2^256. Since the preconditions guarantee that the outcome is
// less than 2^256, this is the final result. We don't need to compute the high bits of the result and prod1
// is no longer required.
result = prod0 * inverse;
return result;
}
}
/**
* @notice Calculates x * y / denominator with full precision, following the selected rounding direction.
*/
function mulDiv(
uint256 x,
uint256 y,
uint256 denominator,
Rounding rounding
) internal pure returns (uint256) {
uint256 result = mulDiv(x, y, denominator);
if (rounding == Rounding.Up && mulmod(x, y, denominator) > 0) {
result += 1;
}
return result;
}
/**
* @dev Returns the square root of a number. It the number is not a perfect square, the value is rounded down.
*
* Inspired by Henry S. Warren, Jr.'s "Hacker's Delight" (Chapter 11).
*/
function sqrt(uint256 a) internal pure returns (uint256) {
if (a == 0) {
return 0;
}
// For our first guess, we get the biggest power of 2 which is smaller than the square root of the target.
// We know that the "msb" (most significant bit) of our target number `a` is a power of 2 such that we have
// `msb(a) <= a < 2*msb(a)`.
// We also know that `k`, the position of the most significant bit, is such that `msb(a) = 2**k`.
// This gives `2**k < a <= 2**(k+1)` → `2**(k/2) <= sqrt(a) < 2 ** (k/2+1)`.
// Using an algorithm similar to the msb conmputation, we are able to compute `result = 2**(k/2)` which is a
// good first aproximation of `sqrt(a)` with at least 1 correct bit.
uint256 result = 1;
uint256 x = a;
if (x >> 128 > 0) {
x >>= 128;
result <<= 64;
}
if (x >> 64 > 0) {
x >>= 64;
result <<= 32;
}
if (x >> 32 > 0) {
x >>= 32;
result <<= 16;
}
if (x >> 16 > 0) {
x >>= 16;
result <<= 8;
}
if (x >> 8 > 0) {
x >>= 8;
result <<= 4;
}
if (x >> 4 > 0) {
x >>= 4;
result <<= 2;
}
if (x >> 2 > 0) {
result <<= 1;
}
// At this point `result` is an estimation with one bit of precision. We know the true value is a uint128,
// since it is the square root of a uint256. Newton's method converges quadratically (precision doubles at
// every iteration). We thus need at most 7 iteration to turn our partial result with one bit of precision
// into the expected uint128 result.
unchecked {
result = (result + a / result) >> 1;
result = (result + a / result) >> 1;
result = (result + a / result) >> 1;
result = (result + a / result) >> 1;
result = (result + a / result) >> 1;
result = (result + a / result) >> 1;
result = (result + a / result) >> 1;
return min(result, a / result);
}
}
/**
* @notice Calculates sqrt(a), following the selected rounding direction.
*/
function sqrt(uint256 a, Rounding rounding) internal pure returns (uint256) {
uint256 result = sqrt(a);
if (rounding == Rounding.Up && result * result < a) {
result += 1;
}
return result;
}
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.0) (utils/math/SafeCast.sol)
pragma solidity ^0.8.0;
/**
* @dev Wrappers over Solidity's uintXX/intXX casting operators with added overflow
* checks.
*
* Downcasting from uint256/int256 in Solidity does not revert on overflow. This can
* easily result in undesired exploitation or bugs, since developers usually
* assume that overflows raise errors. `SafeCast` restores this intuition by
* reverting the transaction when such an operation overflows.
*
* Using this library instead of the unchecked operations eliminates an entire
* class of bugs, so it's recommended to use it always.
*
* Can be combined with {SafeMath} and {SignedSafeMath} to extend it to smaller types, by performing
* all math on `uint256` and `int256` and then downcasting.
*/
library SafeCastUpgradeable {
/**
* @dev Returns the downcasted uint248 from uint256, reverting on
* overflow (when the input is greater than largest uint248).
*
* Counterpart to Solidity's `uint248` operator.
*
* Requirements:
*
* - input must fit into 248 bits
*
* _Available since v4.7._
*/
function toUint248(uint256 value) internal pure returns (uint248) {
require(value <= type(uint248).max, "SafeCast: value doesn't fit in 248 bits");
return uint248(value);
}
/**
* @dev Returns the downcasted uint240 from uint256, reverting on
* overflow (when the input is greater than largest uint240).
*
* Counterpart to Solidity's `uint240` operator.
*
* Requirements:
*
* - input must fit into 240 bits
*
* _Available since v4.7._
*/
function toUint240(uint256 value) internal pure returns (uint240) {
require(value <= type(uint240).max, "SafeCast: value doesn't fit in 240 bits");
return uint240(value);
}
/**
* @dev Returns the downcasted uint232 from uint256, reverting on
* overflow (when the input is greater than largest uint232).
*
* Counterpart to Solidity's `uint232` operator.
*
* Requirements:
*
* - input must fit into 232 bits
*
* _Available since v4.7._
*/
function toUint232(uint256 value) internal pure returns (uint232) {
require(value <= type(uint232).max, "SafeCast: value doesn't fit in 232 bits");
return uint232(value);
}
/**
* @dev Returns the downcasted uint224 from uint256, reverting on
* overflow (when the input is greater than largest uint224).
*
* Counterpart to Solidity's `uint224` operator.
*
* Requirements:
*
* - input must fit into 224 bits
*
* _Available since v4.2._
*/
function toUint224(uint256 value) internal pure returns (uint224) {
require(value <= type(uint224).max, "SafeCast: value doesn't fit in 224 bits");
return uint224(value);
}
/**
* @dev Returns the downcasted uint216 from uint256, reverting on
* overflow (when the input is greater than largest uint216).
*
* Counterpart to Solidity's `uint216` operator.
*
* Requirements:
*
* - input must fit into 216 bits
*
* _Available since v4.7._
*/
function toUint216(uint256 value) internal pure returns (uint216) {
require(value <= type(uint216).max, "SafeCast: value doesn't fit in 216 bits");
return uint216(value);
}
/**
* @dev Returns the downcasted uint208 from uint256, reverting on
* overflow (when the input is greater than largest uint208).
*
* Counterpart to Solidity's `uint208` operator.
*
* Requirements:
*
* - input must fit into 208 bits
*
* _Available since v4.7._
*/
function toUint208(uint256 value) internal pure returns (uint208) {
require(value <= type(uint208).max, "SafeCast: value doesn't fit in 208 bits");
return uint208(value);
}
/**
* @dev Returns the downcasted uint200 from uint256, reverting on
* overflow (when the input is greater than largest uint200).
*
* Counterpart to Solidity's `uint200` operator.
*
* Requirements:
*
* - input must fit into 200 bits
*
* _Available since v4.7._
*/
function toUint200(uint256 value) internal pure returns (uint200) {
require(value <= type(uint200).max, "SafeCast: value doesn't fit in 200 bits");
return uint200(value);
}
/**
* @dev Returns the downcasted uint192 from uint256, reverting on
* overflow (when the input is greater than largest uint192).
*
* Counterpart to Solidity's `uint192` operator.
*
* Requirements:
*
* - input must fit into 192 bits
*
* _Available since v4.7._
*/
function toUint192(uint256 value) internal pure returns (uint192) {
require(value <= type(uint192).max, "SafeCast: value doesn't fit in 192 bits");
return uint192(value);
}
/**
* @dev Returns the downcasted uint184 from uint256, reverting on
* overflow (when the input is greater than largest uint184).
*
* Counterpart to Solidity's `uint184` operator.
*
* Requirements:
*
* - input must fit into 184 bits
*
* _Available since v4.7._
*/
function toUint184(uint256 value) internal pure returns (uint184) {
require(value <= type(uint184).max, "SafeCast: value doesn't fit in 184 bits");
return uint184(value);
}
/**
* @dev Returns the downcasted uint176 from uint256, reverting on
* overflow (when the input is greater than largest uint176).
*
* Counterpart to Solidity's `uint176` operator.
*
* Requirements:
*
* - input must fit into 176 bits
*
* _Available since v4.7._
*/
function toUint176(uint256 value) internal pure returns (uint176) {
require(value <= type(uint176).max, "SafeCast: value doesn't fit in 176 bits");
return uint176(value);
}
/**
* @dev Returns the downcasted uint168 from uint256, reverting on
* overflow (when the input is greater than largest uint168).
*
* Counterpart to Solidity's `uint168` operator.
*
* Requirements:
*
* - input must fit into 168 bits
*
* _Available since v4.7._
*/
function toUint168(uint256 value) internal pure returns (uint168) {
require(value <= type(uint168).max, "SafeCast: value doesn't fit in 168 bits");
return uint168(value);
}
/**
* @dev Returns the downcasted uint160 from uint256, reverting on
* overflow (when the input is greater than largest uint160).
*
* Counterpart to Solidity's `uint160` operator.
*
* Requirements:
*
* - input must fit into 160 bits
*
* _Available since v4.7._
*/
function toUint160(uint256 value) internal pure returns (uint160) {
require(value <= type(uint160).max, "SafeCast: value doesn't fit in 160 bits");
return uint160(value);
}
/**
* @dev Returns the downcasted uint152 from uint256, reverting on
* overflow (when the input is greater than largest uint152).
*
* Counterpart to Solidity's `uint152` operator.
*
* Requirements:
*
* - input must fit into 152 bits
*
* _Available since v4.7._
*/
function toUint152(uint256 value) internal pure returns (uint152) {
require(value <= type(uint152).max, "SafeCast: value doesn't fit in 152 bits");
return uint152(value);
}
/**
* @dev Returns the downcasted uint144 from uint256, reverting on
* overflow (when the input is greater than largest uint144).
*
* Counterpart to Solidity's `uint144` operator.
*
* Requirements:
*
* - input must fit into 144 bits
*
* _Available since v4.7._
*/
function toUint144(uint256 value) internal pure returns (uint144) {
require(value <= type(uint144).max, "SafeCast: value doesn't fit in 144 bits");
return uint144(value);
}
/**
* @dev Returns the downcasted uint136 from uint256, reverting on
* overflow (when the input is greater than largest uint136).
*
* Counterpart to Solidity's `uint136` operator.
*
* Requirements:
*
* - input must fit into 136 bits
*
* _Available since v4.7._
*/
function toUint136(uint256 value) internal pure returns (uint136) {
require(value <= type(uint136).max, "SafeCast: value doesn't fit in 136 bits");
return uint136(value);
}
/**
* @dev Returns the downcasted uint128 from uint256, reverting on
* overflow (when the input is greater than largest uint128).
*
* Counterpart to Solidity's `uint128` operator.
*
* Requirements:
*
* - input must fit into 128 bits
*
* _Available since v2.5._
*/
function toUint128(uint256 value) internal pure returns (uint128) {
require(value <= type(uint128).max, "SafeCast: value doesn't fit in 128 bits");
return uint128(value);
}
/**
* @dev Returns the downcasted uint120 from uint256, reverting on
* overflow (when the input is greater than largest uint120).
*
* Counterpart to Solidity's `uint120` operator.
*
* Requirements:
*
* - input must fit into 120 bits
*
* _Available since v4.7._
*/
function toUint120(uint256 value) internal pure returns (uint120) {
require(value <= type(uint120).max, "SafeCast: value doesn't fit in 120 bits");
return uint120(value);
}
/**
* @dev Returns the downcasted uint112 from uint256, reverting on
* overflow (when the input is greater than largest uint112).
*
* Counterpart to Solidity's `uint112` operator.
*
* Requirements:
*
* - input must fit into 112 bits
*
* _Available since v4.7._
*/
function toUint112(uint256 value) internal pure returns (uint112) {
require(value <= type(uint112).max, "SafeCast: value doesn't fit in 112 bits");
return uint112(value);
}
/**
* @dev Returns the downcasted uint104 from uint256, reverting on
* overflow (when the input is greater than largest uint104).
*
* Counterpart to Solidity's `uint104` operator.
*
* Requirements:
*
* - input must fit into 104 bits
*
* _Available since v4.7._
*/
function toUint104(uint256 value) internal pure returns (uint104) {
require(value <= type(uint104).max, "SafeCast: value doesn't fit in 104 bits");
return uint104(value);
}
/**
* @dev Returns the downcasted uint96 from uint256, reverting on
* overflow (when the input is greater than largest uint96).
*
* Counterpart to Solidity's `uint96` operator.
*
* Requirements:
*
* - input must fit into 96 bits
*
* _Available since v4.2._
*/
function toUint96(uint256 value) internal pure returns (uint96) {
require(value <= type(uint96).max, "SafeCast: value doesn't fit in 96 bits");
return uint96(value);
}
/**
* @dev Returns the downcasted uint88 from uint256, reverting on
* overflow (when the input is greater than largest uint88).
*
* Counterpart to Solidity's `uint88` operator.
*
* Requirements:
*
* - input must fit into 88 bits
*
* _Available since v4.7._
*/
function toUint88(uint256 value) internal pure returns (uint88) {
require(value <= type(uint88).max, "SafeCast: value doesn't fit in 88 bits");
return uint88(value);
}
/**
* @dev Returns the downcasted uint80 from uint256, reverting on
* overflow (when the input is greater than largest uint80).
*
* Counterpart to Solidity's `uint80` operator.
*
* Requirements:
*
* - input must fit into 80 bits
*
* _Available since v4.7._
*/
function toUint80(uint256 value) internal pure returns (uint80) {
require(value <= type(uint80).max, "SafeCast: value doesn't fit in 80 bits");
return uint80(value);
}
/**
* @dev Returns the downcasted uint72 from uint256, reverting on
* overflow (when the input is greater than largest uint72).
*
* Counterpart to Solidity's `uint72` operator.
*
* Requirements:
*
* - input must fit into 72 bits
*
* _Available since v4.7._
*/
function toUint72(uint256 value) internal pure returns (uint72) {
require(value <= type(uint72).max, "SafeCast: value doesn't fit in 72 bits");
return uint72(value);
}
/**
* @dev Returns the downcasted uint64 from uint256, reverting on
* overflow (when the input is greater than largest uint64).
*
* Counterpart to Solidity's `uint64` operator.
*
* Requirements:
*
* - input must fit into 64 bits
*
* _Available since v2.5._
*/
function toUint64(uint256 value) internal pure returns (uint64) {
require(value <= type(uint64).max, "SafeCast: value doesn't fit in 64 bits");
return uint64(value);
}
/**
* @dev Returns the downcasted uint56 from uint256, reverting on
* overflow (when the input is greater than largest uint56).
*
* Counterpart to Solidity's `uint56` operator.
*
* Requirements:
*
* - input must fit into 56 bits
*
* _Available since v4.7._
*/
function toUint56(uint256 value) internal pure returns (uint56) {
require(value <= type(uint56).max, "SafeCast: value doesn't fit in 56 bits");
return uint56(value);
}
/**
* @dev Returns the downcasted uint48 from uint256, reverting on
* overflow (when the input is greater than largest uint48).
*
* Counterpart to Solidity's `uint48` operator.
*
* Requirements:
*
* - input must fit into 48 bits
*
* _Available since v4.7._
*/
function toUint48(uint256 value) internal pure returns (uint48) {
require(value <= type(uint48).max, "SafeCast: value doesn't fit in 48 bits");
return uint48(value);
}
/**
* @dev Returns the downcasted uint40 from uint256, reverting on
* overflow (when the input is greater than largest uint40).
*
* Counterpart to Solidity's `uint40` operator.
*
* Requirements:
*
* - input must fit into 40 bits
*
* _Available since v4.7._
*/
function toUint40(uint256 value) internal pure returns (uint40) {
require(value <= type(uint40).max, "SafeCast: value doesn't fit in 40 bits");
return uint40(value);
}
/**
* @dev Returns the downcasted uint32 from uint256, reverting on
* overflow (when the input is greater than largest uint32).
*
* Counterpart to Solidity's `uint32` operator.
*
* Requirements:
*
* - input must fit into 32 bits
*
* _Available since v2.5._
*/
function toUint32(uint256 value) internal pure returns (uint32) {
require(value <= type(uint32).max, "SafeCast: value doesn't fit in 32 bits");
return uint32(value);
}
/**
* @dev Returns the downcasted uint24 from uint256, reverting on
* overflow (when the input is greater than largest uint24).
*
* Counterpart to Solidity's `uint24` operator.
*
* Requirements:
*
* - input must fit into 24 bits
*
* _Available since v4.7._
*/
function toUint24(uint256 value) internal pure returns (uint24) {
require(value <= type(uint24).max, "SafeCast: value doesn't fit in 24 bits");
return uint24(value);
}
/**
* @dev Returns the downcasted uint16 from uint256, reverting on
* overflow (when the input is greater than largest uint16).
*
* Counterpart to Solidity's `uint16` operator.
*
* Requirements:
*
* - input must fit into 16 bits
*
* _Available since v2.5._
*/
function toUint16(uint256 value) internal pure returns (uint16) {
require(value <= type(uint16).max, "SafeCast: value doesn't fit in 16 bits");
return uint16(value);
}
/**
* @dev Returns the downcasted uint8 from uint256, reverting on
* overflow (when the input is greater than largest uint8).
*
* Counterpart to Solidity's `uint8` operator.
*
* Requirements:
*
* - input must fit into 8 bits
*
* _Available since v2.5._
*/
function toUint8(uint256 value) internal pure returns (uint8) {
require(value <= type(uint8).max, "SafeCast: value doesn't fit in 8 bits");
return uint8(value);
}
/**
* @dev Converts a signed int256 into an unsigned uint256.
*
* Requirements:
*
* - input must be greater than or equal to 0.
*
* _Available since v3.0._
*/
function toUint256(int256 value) internal pure returns (uint256) {
require(value >= 0, "SafeCast: value must be positive");
return uint256(value);
}
/**
* @dev Returns the downcasted int248 from int256, reverting on
* overflow (when the input is less than smallest int248 or
* greater than largest int248).
*
* Counterpart to Solidity's `int248` operator.
*
* Requirements:
*
* - input must fit into 248 bits
*
* _Available since v4.7._
*/
function toInt248(int256 value) internal pure returns (int248) {
require(value >= type(int248).min && value <= type(int248).max, "SafeCast: value doesn't fit in 248 bits");
return int248(value);
}
/**
* @dev Returns the downcasted int240 from int256, reverting on
* overflow (when the input is less than smallest int240 or
* greater than largest int240).
*
* Counterpart to Solidity's `int240` operator.
*
* Requirements:
*
* - input must fit into 240 bits
*
* _Available since v4.7._
*/
function toInt240(int256 value) internal pure returns (int240) {
require(value >= type(int240).min && value <= type(int240).max, "SafeCast: value doesn't fit in 240 bits");
return int240(value);
}
/**
* @dev Returns the downcasted int232 from int256, reverting on
* overflow (when the input is less than smallest int232 or
* greater than largest int232).
*
* Counterpart to Solidity's `int232` operator.
*
* Requirements:
*
* - input must fit into 232 bits
*
* _Available since v4.7._
*/
function toInt232(int256 value) internal pure returns (int232) {
require(value >= type(int232).min && value <= type(int232).max, "SafeCast: value doesn't fit in 232 bits");
return int232(value);
}
/**
* @dev Returns the downcasted int224 from int256, reverting on
* overflow (when the input is less than smallest int224 or
* greater than largest int224).
*
* Counterpart to Solidity's `int224` operator.
*
* Requirements:
*
* - input must fit into 224 bits
*
* _Available since v4.7._
*/
function toInt224(int256 value) internal pure returns (int224) {
require(value >= type(int224).min && value <= type(int224).max, "SafeCast: value doesn't fit in 224 bits");
return int224(value);
}
/**
* @dev Returns the downcasted int216 from int256, reverting on
* overflow (when the input is less than smallest int216 or
* greater than largest int216).
*
* Counterpart to Solidity's `int216` operator.
*
* Requirements:
*
* - input must fit into 216 bits
*
* _Available since v4.7._
*/
function toInt216(int256 value) internal pure returns (int216) {
require(value >= type(int216).min && value <= type(int216).max, "SafeCast: value doesn't fit in 216 bits");
return int216(value);
}
/**
* @dev Returns the downcasted int208 from int256, reverting on
* overflow (when the input is less than smallest int208 or
* greater than largest int208).
*
* Counterpart to Solidity's `int208` operator.
*
* Requirements:
*
* - input must fit into 208 bits
*
* _Available since v4.7._
*/
function toInt208(int256 value) internal pure returns (int208) {
require(value >= type(int208).min && value <= type(int208).max, "SafeCast: value doesn't fit in 208 bits");
return int208(value);
}
/**
* @dev Returns the downcasted int200 from int256, reverting on
* overflow (when the input is less than smallest int200 or
* greater than largest int200).
*
* Counterpart to Solidity's `int200` operator.
*
* Requirements:
*
* - input must fit into 200 bits
*
* _Available since v4.7._
*/
function toInt200(int256 value) internal pure returns (int200) {
require(value >= type(int200).min && value <= type(int200).max, "SafeCast: value doesn't fit in 200 bits");
return int200(value);
}
/**
* @dev Returns the downcasted int192 from int256, reverting on
* overflow (when the input is less than smallest int192 or
* greater than largest int192).
*
* Counterpart to Solidity's `int192` operator.
*
* Requirements:
*
* - input must fit into 192 bits
*
* _Available since v4.7._
*/
function toInt192(int256 value) internal pure returns (int192) {
require(value >= type(int192).min && value <= type(int192).max, "SafeCast: value doesn't fit in 192 bits");
return int192(value);
}
/**
* @dev Returns the downcasted int184 from int256, reverting on
* overflow (when the input is less than smallest int184 or
* greater than largest int184).
*
* Counterpart to Solidity's `int184` operator.
*
* Requirements:
*
* - input must fit into 184 bits
*
* _Available since v4.7._
*/
function toInt184(int256 value) internal pure returns (int184) {
require(value >= type(int184).min && value <= type(int184).max, "SafeCast: value doesn't fit in 184 bits");
return int184(value);
}
/**
* @dev Returns the downcasted int176 from int256, reverting on
* overflow (when the input is less than smallest int176 or
* greater than largest int176).
*
* Counterpart to Solidity's `int176` operator.
*
* Requirements:
*
* - input must fit into 176 bits
*
* _Available since v4.7._
*/
function toInt176(int256 value) internal pure returns (int176) {
require(value >= type(int176).min && value <= type(int176).max, "SafeCast: value doesn't fit in 176 bits");
return int176(value);
}
/**
* @dev Returns the downcasted int168 from int256, reverting on
* overflow (when the input is less than smallest int168 or
* greater than largest int168).
*
* Counterpart to Solidity's `int168` operator.
*
* Requirements:
*
* - input must fit into 168 bits
*
* _Available since v4.7._
*/
function toInt168(int256 value) internal pure returns (int168) {
require(value >= type(int168).min && value <= type(int168).max, "SafeCast: value doesn't fit in 168 bits");
return int168(value);
}
/**
* @dev Returns the downcasted int160 from int256, reverting on
* overflow (when the input is less than smallest int160 or
* greater than largest int160).
*
* Counterpart to Solidity's `int160` operator.
*
* Requirements:
*
* - input must fit into 160 bits
*
* _Available since v4.7._
*/
function toInt160(int256 value) internal pure returns (int160) {
require(value >= type(int160).min && value <= type(int160).max, "SafeCast: value doesn't fit in 160 bits");
return int160(value);
}
/**
* @dev Returns the downcasted int152 from int256, reverting on
* overflow (when the input is less than smallest int152 or
* greater than largest int152).
*
* Counterpart to Solidity's `int152` operator.
*
* Requirements:
*
* - input must fit into 152 bits
*
* _Available since v4.7._
*/
function toInt152(int256 value) internal pure returns (int152) {
require(value >= type(int152).min && value <= type(int152).max, "SafeCast: value doesn't fit in 152 bits");
return int152(value);
}
/**
* @dev Returns the downcasted int144 from int256, reverting on
* overflow (when the input is less than smallest int144 or
* greater than largest int144).
*
* Counterpart to Solidity's `int144` operator.
*
* Requirements:
*
* - input must fit into 144 bits
*
* _Available since v4.7._
*/
function toInt144(int256 value) internal pure returns (int144) {
require(value >= type(int144).min && value <= type(int144).max, "SafeCast: value doesn't fit in 144 bits");
return int144(value);
}
/**
* @dev Returns the downcasted int136 from int256, reverting on
* overflow (when the input is less than smallest int136 or
* greater than largest int136).
*
* Counterpart to Solidity's `int136` operator.
*
* Requirements:
*
* - input must fit into 136 bits
*
* _Available since v4.7._
*/
function toInt136(int256 value) internal pure returns (int136) {
require(value >= type(int136).min && value <= type(int136).max, "SafeCast: value doesn't fit in 136 bits");
return int136(value);
}
/**
* @dev Returns the downcasted int128 from int256, reverting on
* overflow (when the input is less than smallest int128 or
* greater than largest int128).
*
* Counterpart to Solidity's `int128` operator.
*
* Requirements:
*
* - input must fit into 128 bits
*
* _Available since v3.1._
*/
function toInt128(int256 value) internal pure returns (int128) {
require(value >= type(int128).min && value <= type(int128).max, "SafeCast: value doesn't fit in 128 bits");
return int128(value);
}
/**
* @dev Returns the downcasted int120 from int256, reverting on
* overflow (when the input is less than smallest int120 or
* greater than largest int120).
*
* Counterpart to Solidity's `int120` operator.
*
* Requirements:
*
* - input must fit into 120 bits
*
* _Available since v4.7._
*/
function toInt120(int256 value) internal pure returns (int120) {
require(value >= type(int120).min && value <= type(int120).max, "SafeCast: value doesn't fit in 120 bits");
return int120(value);
}
/**
* @dev Returns the downcasted int112 from int256, reverting on
* overflow (when the input is less than smallest int112 or
* greater than largest int112).
*
* Counterpart to Solidity's `int112` operator.
*
* Requirements:
*
* - input must fit into 112 bits
*
* _Available since v4.7._
*/
function toInt112(int256 value) internal pure returns (int112) {
require(value >= type(int112).min && value <= type(int112).max, "SafeCast: value doesn't fit in 112 bits");
return int112(value);
}
/**
* @dev Returns the downcasted int104 from int256, reverting on
* overflow (when the input is less than smallest int104 or
* greater than largest int104).
*
* Counterpart to Solidity's `int104` operator.
*
* Requirements:
*
* - input must fit into 104 bits
*
* _Available since v4.7._
*/
function toInt104(int256 value) internal pure returns (int104) {
require(value >= type(int104).min && value <= type(int104).max, "SafeCast: value doesn't fit in 104 bits");
return int104(value);
}
/**
* @dev Returns the downcasted int96 from int256, reverting on
* overflow (when the input is less than smallest int96 or
* greater than largest int96).
*
* Counterpart to Solidity's `int96` operator.
*
* Requirements:
*
* - input must fit into 96 bits
*
* _Available since v4.7._
*/
function toInt96(int256 value) internal pure returns (int96) {
require(value >= type(int96).min && value <= type(int96).max, "SafeCast: value doesn't fit in 96 bits");
return int96(value);
}
/**
* @dev Returns the downcasted int88 from int256, reverting on
* overflow (when the input is less than smallest int88 or
* greater than largest int88).
*
* Counterpart to Solidity's `int88` operator.
*
* Requirements:
*
* - input must fit into 88 bits
*
* _Available since v4.7._
*/
function toInt88(int256 value) internal pure returns (int88) {
require(value >= type(int88).min && value <= type(int88).max, "SafeCast: value doesn't fit in 88 bits");
return int88(value);
}
/**
* @dev Returns the downcasted int80 from int256, reverting on
* overflow (when the input is less than smallest int80 or
* greater than largest int80).
*
* Counterpart to Solidity's `int80` operator.
*
* Requirements:
*
* - input must fit into 80 bits
*
* _Available since v4.7._
*/
function toInt80(int256 value) internal pure returns (int80) {
require(value >= type(int80).min && value <= type(int80).max, "SafeCast: value doesn't fit in 80 bits");
return int80(value);
}
/**
* @dev Returns the downcasted int72 from int256, reverting on
* overflow (when the input is less than smallest int72 or
* greater than largest int72).
*
* Counterpart to Solidity's `int72` operator.
*
* Requirements:
*
* - input must fit into 72 bits
*
* _Available since v4.7._
*/
function toInt72(int256 value) internal pure returns (int72) {
require(value >= type(int72).min && value <= type(int72).max, "SafeCast: value doesn't fit in 72 bits");
return int72(value);
}
/**
* @dev Returns the downcasted int64 from int256, reverting on
* overflow (when the input is less than smallest int64 or
* greater than largest int64).
*
* Counterpart to Solidity's `int64` operator.
*
* Requirements:
*
* - input must fit into 64 bits
*
* _Available since v3.1._
*/
function toInt64(int256 value) internal pure returns (int64) {
require(value >= type(int64).min && value <= type(int64).max, "SafeCast: value doesn't fit in 64 bits");
return int64(value);
}
/**
* @dev Returns the downcasted int56 from int256, reverting on
* overflow (when the input is less than smallest int56 or
* greater than largest int56).
*
* Counterpart to Solidity's `int56` operator.
*
* Requirements:
*
* - input must fit into 56 bits
*
* _Available since v4.7._
*/
function toInt56(int256 value) internal pure returns (int56) {
require(value >= type(int56).min && value <= type(int56).max, "SafeCast: value doesn't fit in 56 bits");
return int56(value);
}
/**
* @dev Returns the downcasted int48 from int256, reverting on
* overflow (when the input is less than smallest int48 or
* greater than largest int48).
*
* Counterpart to Solidity's `int48` operator.
*
* Requirements:
*
* - input must fit into 48 bits
*
* _Available since v4.7._
*/
function toInt48(int256 value) internal pure returns (int48) {
require(value >= type(int48).min && value <= type(int48).max, "SafeCast: value doesn't fit in 48 bits");
return int48(value);
}
/**
* @dev Returns the downcasted int40 from int256, reverting on
* overflow (when the input is less than smallest int40 or
* greater than largest int40).
*
* Counterpart to Solidity's `int40` operator.
*
* Requirements:
*
* - input must fit into 40 bits
*
* _Available since v4.7._
*/
function toInt40(int256 value) internal pure returns (int40) {
require(value >= type(int40).min && value <= type(int40).max, "SafeCast: value doesn't fit in 40 bits");
return int40(value);
}
/**
* @dev Returns the downcasted int32 from int256, reverting on
* overflow (when the input is less than smallest int32 or
* greater than largest int32).
*
* Counterpart to Solidity's `int32` operator.
*
* Requirements:
*
* - input must fit into 32 bits
*
* _Available since v3.1._
*/
function toInt32(int256 value) internal pure returns (int32) {
require(value >= type(int32).min && value <= type(int32).max, "SafeCast: value doesn't fit in 32 bits");
return int32(value);
}
/**
* @dev Returns the downcasted int24 from int256, reverting on
* overflow (when the input is less than smallest int24 or
* greater than largest int24).
*
* Counterpart to Solidity's `int24` operator.
*
* Requirements:
*
* - input must fit into 24 bits
*
* _Available since v4.7._
*/
function toInt24(int256 value) internal pure returns (int24) {
require(value >= type(int24).min && value <= type(int24).max, "SafeCast: value doesn't fit in 24 bits");
return int24(value);
}
/**
* @dev Returns the downcasted int16 from int256, reverting on
* overflow (when the input is less than smallest int16 or
* greater than largest int16).
*
* Counterpart to Solidity's `int16` operator.
*
* Requirements:
*
* - input must fit into 16 bits
*
* _Available since v3.1._
*/
function toInt16(int256 value) internal pure returns (int16) {
require(value >= type(int16).min && value <= type(int16).max, "SafeCast: value doesn't fit in 16 bits");
return int16(value);
}
/**
* @dev Returns the downcasted int8 from int256, reverting on
* overflow (when the input is less than smallest int8 or
* greater than largest int8).
*
* Counterpart to Solidity's `int8` operator.
*
* Requirements:
*
* - input must fit into 8 bits
*
* _Available since v3.1._
*/
function toInt8(int256 value) internal pure returns (int8) {
require(value >= type(int8).min && value <= type(int8).max, "SafeCast: value doesn't fit in 8 bits");
return int8(value);
}
/**
* @dev Converts an unsigned uint256 into a signed int256.
*
* Requirements:
*
* - input must be less than or equal to maxInt256.
*
* _Available since v3.0._
*/
function toInt256(uint256 value) internal pure returns (int256) {
// Note: Unsafe cast below is okay because `type(int256).max` is guaranteed to be positive
require(value <= uint256(type(int256).max), "SafeCast: value doesn't fit in an int256");
return int256(value);
}
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.6.0) (utils/structs/DoubleEndedQueue.sol)
pragma solidity ^0.8.4;
import "../math/SafeCastUpgradeable.sol";
/**
* @dev A sequence of items with the ability to efficiently push and pop items (i.e. insert and remove) on both ends of
* the sequence (called front and back). Among other access patterns, it can be used to implement efficient LIFO and
* FIFO queues. Storage use is optimized, and all operations are O(1) constant time. This includes {clear}, given that
* the existing queue contents are left in storage.
*
* The struct is called `Bytes32Deque`. Other types can be cast to and from `bytes32`. This data structure can only be
* used in storage, and not in memory.
* ```
* DoubleEndedQueue.Bytes32Deque queue;
* ```
*
* _Available since v4.6._
*/
library DoubleEndedQueueUpgradeable {
/**
* @dev An operation (e.g. {front}) couldn't be completed due to the queue being empty.
*/
error Empty();
/**
* @dev An operation (e.g. {at}) couldn't be completed due to an index being out of bounds.
*/
error OutOfBounds();
/**
* @dev Indices are signed integers because the queue can grow in any direction. They are 128 bits so begin and end
* are packed in a single storage slot for efficient access. Since the items are added one at a time we can safely
* assume that these 128-bit indices will not overflow, and use unchecked arithmetic.
*
* Struct members have an underscore prefix indicating that they are "private" and should not be read or written to
* directly. Use the functions provided below instead. Modifying the struct manually may violate assumptions and
* lead to unexpected behavior.
*
* Indices are in the range [begin, end) which means the first item is at data[begin] and the last item is at
* data[end - 1].
*/
struct Bytes32Deque {
int128 _begin;
int128 _end;
mapping(int128 => bytes32) _data;
}
/**
* @dev Inserts an item at the end of the queue.
*/
function pushBack(Bytes32Deque storage deque, bytes32 value) internal {
int128 backIndex = deque._end;
deque._data[backIndex] = value;
unchecked {
deque._end = backIndex + 1;
}
}
/**
* @dev Removes the item at the end of the queue and returns it.
*
* Reverts with `Empty` if the queue is empty.
*/
function popBack(Bytes32Deque storage deque) internal returns (bytes32 value) {
if (empty(deque)) revert Empty();
int128 backIndex;
unchecked {
backIndex = deque._end - 1;
}
value = deque._data[backIndex];
delete deque._data[backIndex];
deque._end = backIndex;
}
/**
* @dev Inserts an item at the beginning of the queue.
*/
function pushFront(Bytes32Deque storage deque, bytes32 value) internal {
int128 frontIndex;
unchecked {
frontIndex = deque._begin - 1;
}
deque._data[frontIndex] = value;
deque._begin = frontIndex;
}
/**
* @dev Removes the item at the beginning of the queue and returns it.
*
* Reverts with `Empty` if the queue is empty.
*/
function popFront(Bytes32Deque storage deque) internal returns (bytes32 value) {
if (empty(deque)) revert Empty();
int128 frontIndex = deque._begin;
value = deque._data[frontIndex];
delete deque._data[frontIndex];
unchecked {
deque._begin = frontIndex + 1;
}
}
/**
* @dev Returns the item at the beginning of the queue.
*
* Reverts with `Empty` if the queue is empty.
*/
function front(Bytes32Deque storage deque) internal view returns (bytes32 value) {
if (empty(deque)) revert Empty();
int128 frontIndex = deque._begin;
return deque._data[frontIndex];
}
/**
* @dev Returns the item at the end of the queue.
*
* Reverts with `Empty` if the queue is empty.
*/
function back(Bytes32Deque storage deque) internal view returns (bytes32 value) {
if (empty(deque)) revert Empty();
int128 backIndex;
unchecked {
backIndex = deque._end - 1;
}
return deque._data[backIndex];
}
/**
* @dev Return the item at a position in the queue given by `index`, with the first item at 0 and last item at
* `length(deque) - 1`.
*
* Reverts with `OutOfBounds` if the index is out of bounds.
*/
function at(Bytes32Deque storage deque, uint256 index) internal view returns (bytes32 value) {
// int256(deque._begin) is a safe upcast
int128 idx = SafeCastUpgradeable.toInt128(int256(deque._begin) + SafeCastUpgradeable.toInt256(index));
if (idx >= deque._end) revert OutOfBounds();
return deque._data[idx];
}
/**
* @dev Resets the queue back to being empty.
*
* NOTE: The current items are left behind in storage. This does not affect the functioning of the queue, but misses
* out on potential gas refunds.
*/
function clear(Bytes32Deque storage deque) internal {
deque._begin = 0;
deque._end = 0;
}
/**
* @dev Returns the number of items in the queue.
*/
function length(Bytes32Deque storage deque) internal view returns (uint256) {
// The interface preserves the invariant that begin <= end so we assume this will not overflow.
// We also assume there are at most int256.max items in the queue.
unchecked {
return uint256(int256(deque._end) - int256(deque._begin));
}
}
/**
* @dev Returns true if the queue is empty.
*/
function empty(Bytes32Deque storage deque) internal view returns (bool) {
return deque._end <= deque._begin;
}
}{
"remappings": [
"@arbitrum/nitro-contracts/=node_modules/@arbitrum/nitro-contracts/",
"@arbitrum/token-bridge-contracts/=node_modules/@arbitrum/token-bridge-contracts/",
"@openzeppelin/contracts-upgradeable/=node_modules/@openzeppelin/contracts-upgradeable/",
"@openzeppelin/contracts/=node_modules/@openzeppelin/contracts/",
"ds-test/=lib/forge-std/lib/ds-test/src/",
"forge-std/=lib/forge-std/src/"
],
"optimizer": {
"enabled": true,
"runs": 20000
},
"metadata": {
"bytecodeHash": "ipfs"
},
"outputSelection": {
"*": {
"*": [
"evm.bytecode",
"evm.deployedBytecode",
"devdoc",
"userdoc",
"metadata",
"abi"
]
}
},
"evmVersion": "london",
"libraries": {}
}Contract Security Audit
- No Contract Security Audit Submitted- Submit Audit Here
Contract ABI
API[{"inputs":[],"stateMutability":"nonpayable","type":"constructor"},{"inputs":[],"name":"Empty","type":"error"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint8","name":"version","type":"uint8"}],"name":"Initialized","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint64","name":"oldVoteExtension","type":"uint64"},{"indexed":false,"internalType":"uint64","name":"newVoteExtension","type":"uint64"}],"name":"LateQuorumVoteExtensionSet","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"previousOwner","type":"address"},{"indexed":true,"internalType":"address","name":"newOwner","type":"address"}],"name":"OwnershipTransferred","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint256","name":"proposalId","type":"uint256"}],"name":"ProposalCanceled","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint256","name":"proposalId","type":"uint256"},{"indexed":false,"internalType":"address","name":"proposer","type":"address"},{"indexed":false,"internalType":"address[]","name":"targets","type":"address[]"},{"indexed":false,"internalType":"uint256[]","name":"values","type":"uint256[]"},{"indexed":false,"internalType":"string[]","name":"signatures","type":"string[]"},{"indexed":false,"internalType":"bytes[]","name":"calldatas","type":"bytes[]"},{"indexed":false,"internalType":"uint256","name":"startBlock","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"endBlock","type":"uint256"},{"indexed":false,"internalType":"string","name":"description","type":"string"}],"name":"ProposalCreated","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint256","name":"proposalId","type":"uint256"}],"name":"ProposalExecuted","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"uint256","name":"proposalId","type":"uint256"},{"indexed":false,"internalType":"uint64","name":"extendedDeadline","type":"uint64"}],"name":"ProposalExtended","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint256","name":"proposalId","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"eta","type":"uint256"}],"name":"ProposalQueued","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint256","name":"oldProposalThreshold","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"newProposalThreshold","type":"uint256"}],"name":"ProposalThresholdSet","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint256","name":"oldQuorumNumerator","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"newQuorumNumerator","type":"uint256"}],"name":"QuorumNumeratorUpdated","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"oldTimelock","type":"address"},{"indexed":false,"internalType":"address","name":"newTimelock","type":"address"}],"name":"TimelockChange","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"voter","type":"address"},{"indexed":false,"internalType":"uint256","name":"proposalId","type":"uint256"},{"indexed":false,"internalType":"uint8","name":"support","type":"uint8"},{"indexed":false,"internalType":"uint256","name":"weight","type":"uint256"},{"indexed":false,"internalType":"string","name":"reason","type":"string"}],"name":"VoteCast","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"voter","type":"address"},{"indexed":false,"internalType":"uint256","name":"proposalId","type":"uint256"},{"indexed":false,"internalType":"uint8","name":"support","type":"uint8"},{"indexed":false,"internalType":"uint256","name":"weight","type":"uint256"},{"indexed":false,"internalType":"string","name":"reason","type":"string"},{"indexed":false,"internalType":"bytes","name":"params","type":"bytes"}],"name":"VoteCastWithParams","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint256","name":"oldVotingDelay","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"newVotingDelay","type":"uint256"}],"name":"VotingDelaySet","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint256","name":"oldVotingPeriod","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"newVotingPeriod","type":"uint256"}],"name":"VotingPeriodSet","type":"event"},{"inputs":[],"name":"BALLOT_TYPEHASH","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"COUNTING_MODE","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"pure","type":"function"},{"inputs":[],"name":"EXCLUDE_ADDRESS","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"EXTENDED_BALLOT_TYPEHASH","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"proposalId","type":"uint256"},{"internalType":"uint8","name":"support","type":"uint8"}],"name":"castVote","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"proposalId","type":"uint256"},{"internalType":"uint8","name":"support","type":"uint8"},{"internalType":"uint8","name":"v","type":"uint8"},{"internalType":"bytes32","name":"r","type":"bytes32"},{"internalType":"bytes32","name":"s","type":"bytes32"}],"name":"castVoteBySig","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"proposalId","type":"uint256"},{"internalType":"uint8","name":"support","type":"uint8"},{"internalType":"string","name":"reason","type":"string"}],"name":"castVoteWithReason","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"proposalId","type":"uint256"},{"internalType":"uint8","name":"support","type":"uint8"},{"internalType":"string","name":"reason","type":"string"},{"internalType":"bytes","name":"params","type":"bytes"}],"name":"castVoteWithReasonAndParams","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"proposalId","type":"uint256"},{"internalType":"uint8","name":"support","type":"uint8"},{"internalType":"string","name":"reason","type":"string"},{"internalType":"bytes","name":"params","type":"bytes"},{"internalType":"uint8","name":"v","type":"uint8"},{"internalType":"bytes32","name":"r","type":"bytes32"},{"internalType":"bytes32","name":"s","type":"bytes32"}],"name":"castVoteWithReasonAndParamsBySig","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address[]","name":"targets","type":"address[]"},{"internalType":"uint256[]","name":"values","type":"uint256[]"},{"internalType":"bytes[]","name":"calldatas","type":"bytes[]"},{"internalType":"bytes32","name":"descriptionHash","type":"bytes32"}],"name":"execute","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"uint256","name":"blockNumber","type":"uint256"}],"name":"getPastCirculatingSupply","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"account","type":"address"},{"internalType":"uint256","name":"blockNumber","type":"uint256"}],"name":"getVotes","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"account","type":"address"},{"internalType":"uint256","name":"blockNumber","type":"uint256"},{"internalType":"bytes","name":"params","type":"bytes"}],"name":"getVotesWithParams","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"proposalId","type":"uint256"},{"internalType":"address","name":"account","type":"address"}],"name":"hasVoted","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address[]","name":"targets","type":"address[]"},{"internalType":"uint256[]","name":"values","type":"uint256[]"},{"internalType":"bytes[]","name":"calldatas","type":"bytes[]"},{"internalType":"bytes32","name":"descriptionHash","type":"bytes32"}],"name":"hashProposal","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"pure","type":"function"},{"inputs":[{"internalType":"contract IVotesUpgradeable","name":"_token","type":"address"},{"internalType":"contract TimelockControllerUpgradeable","name":"_timelock","type":"address"},{"internalType":"address","name":"_owner","type":"address"},{"internalType":"uint256","name":"_votingDelay","type":"uint256"},{"internalType":"uint256","name":"_votingPeriod","type":"uint256"},{"internalType":"uint256","name":"_quorumNumerator","type":"uint256"},{"internalType":"uint256","name":"_proposalThreshold","type":"uint256"},{"internalType":"uint64","name":"_minPeriodAfterQuorum","type":"uint64"}],"name":"initialize","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"lateQuorumVoteExtension","outputs":[{"internalType":"uint64","name":"","type":"uint64"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"name","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"},{"internalType":"address","name":"","type":"address"},{"internalType":"uint256[]","name":"","type":"uint256[]"},{"internalType":"uint256[]","name":"","type":"uint256[]"},{"internalType":"bytes","name":"","type":"bytes"}],"name":"onERC1155BatchReceived","outputs":[{"internalType":"bytes4","name":"","type":"bytes4"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"},{"internalType":"address","name":"","type":"address"},{"internalType":"uint256","name":"","type":"uint256"},{"internalType":"uint256","name":"","type":"uint256"},{"internalType":"bytes","name":"","type":"bytes"}],"name":"onERC1155Received","outputs":[{"internalType":"bytes4","name":"","type":"bytes4"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"},{"internalType":"address","name":"","type":"address"},{"internalType":"uint256","name":"","type":"uint256"},{"internalType":"bytes","name":"","type":"bytes"}],"name":"onERC721Received","outputs":[{"internalType":"bytes4","name":"","type":"bytes4"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"proposalId","type":"uint256"}],"name":"proposalDeadline","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"proposalId","type":"uint256"}],"name":"proposalEta","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"proposalId","type":"uint256"}],"name":"proposalSnapshot","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"proposalThreshold","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"proposalId","type":"uint256"}],"name":"proposalVotes","outputs":[{"internalType":"uint256","name":"againstVotes","type":"uint256"},{"internalType":"uint256","name":"forVotes","type":"uint256"},{"internalType":"uint256","name":"abstainVotes","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address[]","name":"targets","type":"address[]"},{"internalType":"uint256[]","name":"values","type":"uint256[]"},{"internalType":"bytes[]","name":"calldatas","type":"bytes[]"},{"internalType":"string","name":"description","type":"string"}],"name":"propose","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address[]","name":"targets","type":"address[]"},{"internalType":"uint256[]","name":"values","type":"uint256[]"},{"internalType":"bytes[]","name":"calldatas","type":"bytes[]"},{"internalType":"bytes32","name":"descriptionHash","type":"bytes32"}],"name":"queue","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"blockNumber","type":"uint256"}],"name":"quorum","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"quorumDenominator","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"pure","type":"function"},{"inputs":[{"internalType":"uint256","name":"blockNumber","type":"uint256"}],"name":"quorumNumerator","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"quorumNumerator","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"target","type":"address"},{"internalType":"uint256","name":"value","type":"uint256"},{"internalType":"byte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TimelockControllerUpgradeable","name":"newTimelock","type":"address"}],"name":"updateTimelock","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"version","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"votingDelay","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"votingPeriod","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"stateMutability":"payable","type":"receive"}]Contract Creation Code
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0x065620d99E1785Ccf56Fa95462d3012Eb844FDC9
Multichain Portfolio | 34 Chains
| Chain | Token | Portfolio % | Price | Amount | Value |
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A contract address hosts a smart contract, which is a set of code stored on the blockchain that runs when predetermined conditions are met. Learn more about addresses in our Knowledge Base.