Address Details
contract
0x62f7b5aC9E9f38c814E134bcb07A5585A8464713
- Contract Name
- Manager
- Creator
- 0x5bc1c4–68a788 at 0x02abc3–169989
- Balance
- 0 CELO ( )
- Locked CELO Balance
- 0.00 CELO
- Voting CELO Balance
- 0.00 CELO
- Pending Unlocked Gold
- 0.00 CELO
- Tokens
-
Fetching tokens...
- Transactions
- 0 Transactions
- Transfers
- 0 Transfers
- Gas Used
- Fetching gas used...
- Last Balance Update
- 17706469
This contract has been verified via Sourcify.
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- Contract name:
- Manager
- Optimization enabled
- false
- Compiler version
- v0.8.11+commit.d7f03943
- EVM Version
- istanbul
- Verified at
- 2023-05-12T14:50:50.596134Z
contracts/Manager.sol
// SPDX-License-Identifier: LGPL-3.0-only pragma solidity 0.8.11; import "@openzeppelin/contracts/utils/structs/EnumerableSet.sol"; import "@openzeppelin/contracts/utils/math/Math.sol"; import "./common/UsingRegistryUpgradeable.sol"; import "./common/UUPSOwnableUpgradeable.sol"; import "./interfaces/IAccount.sol"; import "./interfaces/IStakedCelo.sol"; /** * @title Manages the StakedCelo system, by controlling the minting and burning * of stCELO and implementing strategies for voting and unvoting of deposited or * withdrawn CELO. */ contract Manager is UUPSOwnableUpgradeable, UsingRegistryUpgradeable { using EnumerableSet for EnumerableSet.AddressSet; /** * @notice Holds a group's address and votes. * @param group The address of the group. * @param votes The votes assigned to the group. */ struct GroupWithVotes { address group; uint256 votes; } /** * @notice An instance of the StakedCelo contract this Manager manages. */ IStakedCelo internal stakedCelo; /** * @notice An instance of the Account contract this Manager manages. */ IAccount internal account; /** * @notice The set of currently active groups that will be voted for with * new deposits. */ EnumerableSet.AddressSet private activeGroups; /** * @notice The set of deprecated groups. These are groups that should no * longer receive new votes from deposits, but still need to be kept track * of because the Account contract is still voting for them. */ EnumerableSet.AddressSet private deprecatedGroups; /** * @notice Emitted when a new group is activated for voting. * @param group The group's address. */ event GroupActivated(address indexed group); /** * @notice Emitted when a group is deprecated. * @param group The group's address. */ event GroupDeprecated(address indexed group); /** * @notice Emitted when a deprecated group is no longer being voted for and * the contract forgets about it entirely. * @param group The group's address. */ event GroupRemoved(address indexed group); /** * @notice Used when attempting to activate a group that is already active. * @param group The group's address. */ error GroupAlreadyAdded(address group); /** * @notice Used when attempting to deprecate a group that is not active. * @param group The group's address. */ error GroupNotActive(address group); /** * @notice Used when an attempt to add an active group to the EnumerableSet * fails. * @param group The group's address. */ error FailedToAddActiveGroup(address group); /** * @notice Used when an attempt to add a deprecated group to the * EnumerableSet fails. * @param group The group's address. */ error FailedToAddDeprecatedGroup(address group); /** * @notice Used when an attempt to remove a deprecated group from the * EnumerableSet fails. * @param group The group's address. */ error FailedToRemoveDeprecatedGroup(address group); /** * @notice Used when attempting to activate a group when the maximum number * of groups voted (as allowed by the Election contract) is already being * voted for. */ error MaxGroupsVotedForReached(); /** * @notice Used when attempting to deposit when there are not active groups * to vote for. */ error NoActiveGroups(); /** * @notice Used when attempting to deposit when the total deposit amount * would tip each active group over the voting limit as defined in * Election.sol. */ error NoVotableGroups(); /** * @notice Used when attempting to withdraw but there are no groups being * voted for. */ error NoGroups(); /** * @notice Used when attempting to withdraw 0 value. */ error ZeroWithdrawal(); /** * @notice Empty constructor for proxy implementation, `initializer` modifer ensures the * implementation gets initialized. */ // solhint-disable-next-line no-empty-blocks constructor() initializer {} /** * @notice Initialize the contract with registry and owner. * @param _registry The address of the Celo registry. * @param _owner The address of the contract owner. */ function initialize(address _registry, address _owner) external initializer { _transferOwnership(_owner); __UsingRegistry_init(_registry); } /** * @notice Set this contract's dependencies in the StakedCelo system. * @dev Manager, Account and StakedCelo all reference each other * so we need a way of setting these after all contracts are * deployed and initialized. * @param _stakedCelo the address of the StakedCelo contract. * @param _account The address of the Account contract. */ function setDependencies(address _stakedCelo, address _account) external onlyOwner { stakedCelo = IStakedCelo(_stakedCelo); account = IAccount(_account); } /** * @notice Marks a group as votable. * @param group The address of the group to add to the set of votable * groups. * @dev Fails if the maximum number of groups are already being voted for by * the Account smart contract (as per the `maxNumGroupsVotedFor` in the * Election contract). */ function activateGroup(address group) external onlyOwner { if (activeGroups.contains(group)) { revert GroupAlreadyAdded(group); } if (deprecatedGroups.contains(group)) { if (!deprecatedGroups.remove(group)) { revert FailedToRemoveDeprecatedGroup(group); } } if ( activeGroups.length() + deprecatedGroups.length() >= getElection().maxNumGroupsVotedFor() ) { revert MaxGroupsVotedForReached(); } if (!activeGroups.add(group)) { revert FailedToAddActiveGroup(group); } emit GroupActivated(group); } /** * @notice Returns the array of active groups. * @return The array of active groups. */ function getGroups() external view returns (address[] memory) { return activeGroups.values(); } /** * @notice Marks a group as deprecated. * @param group The group to deprecate. * @dev A deprecated group will remain in the `deprecatedGroups` array as * long as it is still being voted for by the Account contract. Deprecated * groups will be the first to have their votes withdrawn. */ function deprecateGroup(address group) external onlyOwner { if (!activeGroups.remove(group)) { revert GroupNotActive(group); } emit GroupDeprecated(group); if (account.getCeloForGroup(group) > 0) { if (!deprecatedGroups.add(group)) { revert FailedToAddDeprecatedGroup(group); } } else { emit GroupRemoved(group); } } /** * @notice Returns the list of deprecated groups. * @return The list of deprecated groups. */ function getDeprecatedGroups() external view returns (address[] memory) { return deprecatedGroups.values(); } /** * @notice Used to deposit CELO into the StakedCelo system. The user will * receive an amount of stCELO proportional to their contribution. The CELO * will be scheduled to be voted for with the Account contract. */ function deposit() external payable { if (activeGroups.length() == 0) { revert NoActiveGroups(); } stakedCelo.mint(msg.sender, toStakedCelo(msg.value)); distributeVotes(msg.value); } /** * @notice Used to withdraw CELO from the system, in exchange for burning * stCELO. * @param stakedCeloAmount The amount of stCELO to burn. * @dev Calculates the CELO amount based on the ratio of outstanding stCELO * and the total amount of CELO owned and used for voting by Account. See * `toCelo`. * @dev The funds need to be withdrawn using calls to `Account.withdraw` and * `Account.finishPendingWithdrawal`. */ function withdraw(uint256 stakedCeloAmount) external { if (activeGroups.length() + deprecatedGroups.length() == 0) { revert NoGroups(); } distributeWithdrawals(toCelo(stakedCeloAmount), msg.sender); stakedCelo.burn(msg.sender, stakedCeloAmount); } /** * @notice Computes the amount of stCELO that should be minted for a given * amount of CELO deposited. * @param celoAmount The amount of CELO deposited. * @return The amount of stCELO that should be minted. */ function toStakedCelo(uint256 celoAmount) public view returns (uint256) { uint256 stCeloSupply = stakedCelo.totalSupply(); uint256 celoBalance = account.getTotalCelo(); if (stCeloSupply == 0 || celoBalance == 0) { return celoAmount; } return (celoAmount * stCeloSupply) / celoBalance; } /** * @notice Computes the amount of CELO that should be withdrawn for a given * amount of stCELO burned. * @param stCeloAmount The amount of stCELO burned. * @return The amount of CELO that should be withdrawn. */ function toCelo(uint256 stCeloAmount) public view returns (uint256) { uint256 stCeloSupply = stakedCelo.totalSupply(); uint256 celoBalance = account.getTotalCelo(); if (stCeloSupply == 0 || celoBalance == 0) { return stCeloAmount; } return (stCeloAmount * celoBalance) / stCeloSupply; } /** * @notice Distributes votes by computing the number of votes each active * group should receive, then calling out to `Account.scheduleVotes`. * @param votes The amount of votes to distribute. * @dev The vote distribution strategy is to try and have each validator * group to be receiving the same amount of votes from the system. If a * group already has more votes than the average of the total available * votes it will not be voted for, and instead we'll try to evenly * distribute between the remaining groups. * @dev Election.sol sets a dynamic limit on the number of votes receivable * by a group, based on the group's size, the total amount of Locked * CELO, and the total number of electable validators. We don't want to * schedule votes for a group when the amount would exceed this threshold. * `getVotableGroups` below selects those groups that could receive the * entire `votes` amount, and filters out the rest. This is a heuristic: * when distributing votes evenly, the group might receive less than * `votes`, and the total amount could end up being under the limit. * However, doing an exact computation would be both complex and cost a lot * of additional gas, hence the heuristic. If indeed all groups are close to * their voting limit, causing a larger deposit to revert with * NoVotableGroups, despite there still being some room for deposits, this * can be worked around by sending a few smaller deposits. */ function distributeVotes(uint256 votes) internal { /* * "Votable" groups are those that will currently fit under the voting * limit in Election.sol even if voted for with the entire `votes` * amount. Note that some might still not end up getting voted for given * the distribution logic below. */ address[] memory votableGroups = getVotableGroups(votes); if (votableGroups.length == 0) { revert NoVotableGroups(); } GroupWithVotes[] memory sortedGroups; uint256 availableVotes; (sortedGroups, availableVotes) = getSortedGroupsWithVotes(votableGroups); availableVotes += votes; uint256[] memory votesPerGroup = new uint256[](votableGroups.length); uint256 groupsVoted = votableGroups.length; uint256 targetVotes = availableVotes / groupsVoted; /* * This would normally be (i = votableGroups.length - 1; i >=0; i--), * but we can't i-- on the last iteration when i=0, since i is an * unsigned integer. So we iterate with the loop variable 1 greater than * expected, set index = i-1, and use index inside the loop. */ for (uint256 i = votableGroups.length; i > 0; i--) { uint256 index = i - 1; if (sortedGroups[index].votes >= targetVotes) { groupsVoted--; availableVotes -= sortedGroups[index].votes; targetVotes = availableVotes / groupsVoted; votesPerGroup[index] = 0; } else { votesPerGroup[index] = targetVotes - sortedGroups[index].votes; if (availableVotes % groupsVoted > index) { votesPerGroup[index]++; } } } address[] memory finalGroups = new address[](groupsVoted); uint256[] memory finalVotes = new uint256[](groupsVoted); for (uint256 i = 0; i < groupsVoted; i++) { finalGroups[i] = sortedGroups[i].group; finalVotes[i] = votesPerGroup[i]; } account.scheduleVotes{value: votes}(finalGroups, finalVotes); } /** * @notice Distributes withdrawals by computing the number of votes that * should be withdrawn from each group, then calling out to * `Account.scheduleVotes`. * @param withdrawal The amount of votes to withdraw. * @param beneficiary The address that should end up receiving the withdrawn * CELO. * @dev The withdrawal distribution strategy is to: * 1. Withdraw as much as possible from any deprecated groups. * 2. If more votes still need to be withdrawn, try and have each validator * group end up receiving the same amount of votes from the system. If a * group already has less votes than the average of the total remaining * votes, it will not be withdrawn from, and instead we'll try to evenly * distribute between the remaining groups. */ function distributeWithdrawals(uint256 withdrawal, address beneficiary) internal { if (withdrawal == 0) { revert ZeroWithdrawal(); } address[] memory deprecatedGroupsWithdrawn; uint256[] memory deprecatedWithdrawalsPerGroup; uint256 numberDeprecatedGroupsWithdrawn; ( deprecatedGroupsWithdrawn, deprecatedWithdrawalsPerGroup, numberDeprecatedGroupsWithdrawn, withdrawal ) = getDeprecatedGroupsWithdrawalDistribution(withdrawal); address[] memory groupsWithdrawn; uint256[] memory withdrawalsPerGroup; (groupsWithdrawn, withdrawalsPerGroup) = getActiveGroupWithdrawalDistribution(withdrawal); address[] memory finalGroups = new address[]( groupsWithdrawn.length + numberDeprecatedGroupsWithdrawn ); uint256[] memory finalVotes = new uint256[]( groupsWithdrawn.length + numberDeprecatedGroupsWithdrawn ); for (uint256 i = 0; i < numberDeprecatedGroupsWithdrawn; i++) { finalGroups[i] = deprecatedGroupsWithdrawn[i]; finalVotes[i] = deprecatedWithdrawalsPerGroup[i]; } for (uint256 i = 0; i < groupsWithdrawn.length; i++) { finalGroups[i + numberDeprecatedGroupsWithdrawn] = groupsWithdrawn[i]; finalVotes[i + numberDeprecatedGroupsWithdrawn] = withdrawalsPerGroup[i]; } account.scheduleWithdrawals(beneficiary, finalGroups, finalVotes); } /** * @notice Calculates how many votes should be withdrawn from each * deprecated group. * @param withdrawal The total amount of votes that needs to be withdrawn. * @return deprecatedGroupsWithdrawn The array of deprecated groups to be * withdrawn from. * @return deprecatedWithdrawalsPerGroup The amount of votes to withdraw * from the respective deprecated group in `deprecatedGroupsWithdrawn`. * @return numberDeprecatedGroupsWithdrawn The number of groups in * `deprecatedGroupsWithdrawn` that have a non zero withdrawal. * @return remainingWithdrawal The number of votes that still need to be * withdrawn after withdrawing from deprecated groups. * @dev Non zero entries of `deprecatedWithdrawalsPerGroup` will be exactly * a prefix of length `numberDeprecatedGroupsWithdrawn`. */ function getDeprecatedGroupsWithdrawalDistribution(uint256 withdrawal) internal returns ( address[] memory deprecatedGroupsWithdrawn, uint256[] memory deprecatedWithdrawalsPerGroup, uint256 numberDeprecatedGroupsWithdrawn, uint256 remainingWithdrawal ) { remainingWithdrawal = withdrawal; uint256 numberDeprecatedGroups = deprecatedGroups.length(); deprecatedGroupsWithdrawn = new address[](numberDeprecatedGroups); deprecatedWithdrawalsPerGroup = new uint256[](numberDeprecatedGroups); numberDeprecatedGroupsWithdrawn = 0; for (uint256 i = 0; i < numberDeprecatedGroups; i++) { numberDeprecatedGroupsWithdrawn++; deprecatedGroupsWithdrawn[i] = deprecatedGroups.at(i); uint256 currentVotes = account.getCeloForGroup(deprecatedGroupsWithdrawn[i]); deprecatedWithdrawalsPerGroup[i] = Math.min(remainingWithdrawal, currentVotes); remainingWithdrawal -= deprecatedWithdrawalsPerGroup[i]; if (currentVotes == deprecatedWithdrawalsPerGroup[i]) { if (!deprecatedGroups.remove(deprecatedGroupsWithdrawn[i])) { revert FailedToRemoveDeprecatedGroup(deprecatedGroupsWithdrawn[i]); } emit GroupRemoved(deprecatedGroupsWithdrawn[i]); } if (remainingWithdrawal == 0) { break; } } return ( deprecatedGroupsWithdrawn, deprecatedWithdrawalsPerGroup, numberDeprecatedGroupsWithdrawn, remainingWithdrawal ); } /** * @notice Calculates how votes should be withdrawn from each active group. * @param withdrawal The number of votes that need to be withdrawn. * @return The array of group addresses that should be withdrawn from. * @return The amount of votes to withdraw from the respective group in the * array of groups withdrawn from. */ function getActiveGroupWithdrawalDistribution(uint256 withdrawal) internal view returns (address[] memory, uint256[] memory) { if (withdrawal == 0) { address[] memory noGroups = new address[](0); uint256[] memory noWithdrawals = new uint256[](0); return (noGroups, noWithdrawals); } uint256 numberGroups = activeGroups.length(); GroupWithVotes[] memory sortedGroups; uint256 availableVotes; (sortedGroups, availableVotes) = getSortedGroupsWithVotes(activeGroups.values()); availableVotes -= withdrawal; uint256 numberGroupsWithdrawn = numberGroups; uint256 targetVotes = availableVotes / numberGroupsWithdrawn; for (uint256 i = 0; i < numberGroups; i++) { if (sortedGroups[i].votes <= targetVotes) { numberGroupsWithdrawn--; availableVotes -= sortedGroups[i].votes; targetVotes = availableVotes / numberGroupsWithdrawn; } else { break; } } uint256[] memory withdrawalsPerGroup = new uint256[](numberGroupsWithdrawn); address[] memory groupsWithdrawn = new address[](numberGroupsWithdrawn); uint256 offset = numberGroups - numberGroupsWithdrawn; for (uint256 i = 0; i < numberGroupsWithdrawn; i++) { groupsWithdrawn[i] = sortedGroups[i + offset].group; withdrawalsPerGroup[i] = sortedGroups[i + offset].votes - targetVotes; if (availableVotes % numberGroupsWithdrawn > i) { withdrawalsPerGroup[i]--; } } return (groupsWithdrawn, withdrawalsPerGroup); } /** * @notice Returns a list of group addresses with their corresponding * current total votes, sorted by the number of votes, and the total number * of votes in the system. * @param groups The array of addresses of the groups to sort. * @return The array of GroupWithVotes structs, sorted by number of votes. * @return The total number of votes assigned to active groups. */ function getSortedGroupsWithVotes(address[] memory groups) internal view returns (GroupWithVotes[] memory, uint256) { GroupWithVotes[] memory groupsWithVotes = new GroupWithVotes[](groups.length); uint256 totalVotes = 0; for (uint256 i = 0; i < groups.length; i++) { uint256 votes = account.getCeloForGroup(groups[i]); totalVotes += votes; groupsWithVotes[i] = GroupWithVotes(groups[i], votes); } sortGroupsWithVotes(groupsWithVotes); return (groupsWithVotes, totalVotes); } /** * @notice Returns the active groups that can receive the entire `votes` * amount based on their current receivable votes limit in Election.sol. * @param votes The number of votes that would potentially be added. * @return The list of votable active groups. */ function getVotableGroups(uint256 votes) internal returns (address[] memory) { uint256 numberGroups = activeGroups.length(); uint256 numberVotableGroups = 0; address[] memory votableGroups = new address[](numberGroups); for (uint256 i = 0; i < numberGroups; i++) { address group = activeGroups.at(i); uint256 scheduledVotes = account.scheduledVotesForGroup(group); if (getElection().canReceiveVotes(group, votes + scheduledVotes)) { votableGroups[numberVotableGroups] = group; numberVotableGroups++; } } address[] memory votableGroupsFinal = new address[](numberVotableGroups); for (uint256 i = 0; i < numberVotableGroups; i++) { votableGroupsFinal[i] = votableGroups[i]; } return votableGroupsFinal; } /** * @notice Sorts an array of GroupWithVotes structs based on increasing * `votes` values. * @param groupsWithVotes The array to sort. * @dev This is an in-place insertion sort. In general in Solidity we should * be careful of algorithms on arrays, especially O(n^2) ones, but here * we're guaranteed to be working with a small array, its length is bounded * by the maximum number of groups that can be voted for in Elections.sol. */ function sortGroupsWithVotes(GroupWithVotes[] memory groupsWithVotes) internal pure { for (uint256 i = 1; i < groupsWithVotes.length; i++) { uint256 j = i; while (j > 0 && groupsWithVotes[j].votes < groupsWithVotes[j - 1].votes) { (groupsWithVotes[j], groupsWithVotes[j - 1]) = ( groupsWithVotes[j - 1], groupsWithVotes[j] ); j--; } } } }
/_openzeppelin/contracts/proxy/ERC1967/ERC1967Upgrade.sol
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (proxy/ERC1967/ERC1967Upgrade.sol) pragma solidity ^0.8.2; import "../beacon/IBeacon.sol"; import "../../utils/Address.sol"; import "../../utils/StorageSlot.sol"; /** * @dev This abstract contract provides getters and event emitting update functions for * https://eips.ethereum.org/EIPS/eip-1967[EIP1967] slots. * * _Available since v4.1._ * * @custom:oz-upgrades-unsafe-allow delegatecall */ abstract contract ERC1967Upgrade { // This is the keccak-256 hash of "eip1967.proxy.rollback" subtracted by 1 bytes32 private constant _ROLLBACK_SLOT = 0x4910fdfa16fed3260ed0e7147f7cc6da11a60208b5b9406d12a635614ffd9143; /** * @dev Storage slot with the address of the current implementation. * This is the keccak-256 hash of "eip1967.proxy.implementation" subtracted by 1, and is * validated in the constructor. */ bytes32 internal constant _IMPLEMENTATION_SLOT = 0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc; /** * @dev Emitted when the implementation is upgraded. */ event Upgraded(address indexed implementation); /** * @dev Returns the current implementation address. */ function _getImplementation() internal view returns (address) { return StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value; } /** * @dev Stores a new address in the EIP1967 implementation slot. */ function _setImplementation(address newImplementation) private { require(Address.isContract(newImplementation), "ERC1967: new implementation is not a contract"); StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value = newImplementation; } /** * @dev Perform implementation upgrade * * Emits an {Upgraded} event. */ function _upgradeTo(address newImplementation) internal { _setImplementation(newImplementation); emit Upgraded(newImplementation); } /** * @dev Perform implementation upgrade with additional setup call. * * Emits an {Upgraded} event. */ function _upgradeToAndCall( address newImplementation, bytes memory data, bool forceCall ) internal { _upgradeTo(newImplementation); if (data.length > 0 || forceCall) { Address.functionDelegateCall(newImplementation, data); } } /** * @dev Perform implementation upgrade with security checks for UUPS proxies, and additional setup call. * * Emits an {Upgraded} event. */ function _upgradeToAndCallSecure( address newImplementation, bytes memory data, bool forceCall ) internal { address oldImplementation = _getImplementation(); // Initial upgrade and setup call _setImplementation(newImplementation); if (data.length > 0 || forceCall) { Address.functionDelegateCall(newImplementation, data); } // Perform rollback test if not already in progress StorageSlot.BooleanSlot storage rollbackTesting = StorageSlot.getBooleanSlot(_ROLLBACK_SLOT); if (!rollbackTesting.value) { // Trigger rollback using upgradeTo from the new implementation rollbackTesting.value = true; Address.functionDelegateCall( newImplementation, abi.encodeWithSignature("upgradeTo(address)", oldImplementation) ); rollbackTesting.value = false; // Check rollback was effective require(oldImplementation == _getImplementation(), "ERC1967Upgrade: upgrade breaks further upgrades"); // Finally reset to the new implementation and log the upgrade _upgradeTo(newImplementation); } } /** * @dev Storage slot with the admin of the contract. * This is the keccak-256 hash of "eip1967.proxy.admin" subtracted by 1, and is * validated in the constructor. */ bytes32 internal constant _ADMIN_SLOT = 0xb53127684a568b3173ae13b9f8a6016e243e63b6e8ee1178d6a717850b5d6103; /** * @dev Emitted when the admin account has changed. */ event AdminChanged(address previousAdmin, address newAdmin); /** * @dev Returns the current admin. */ function _getAdmin() internal view returns (address) { return StorageSlot.getAddressSlot(_ADMIN_SLOT).value; } /** * @dev Stores a new address in the EIP1967 admin slot. */ function _setAdmin(address newAdmin) private { require(newAdmin != address(0), "ERC1967: new admin is the zero address"); StorageSlot.getAddressSlot(_ADMIN_SLOT).value = newAdmin; } /** * @dev Changes the admin of the proxy. * * Emits an {AdminChanged} event. */ function _changeAdmin(address newAdmin) internal { emit AdminChanged(_getAdmin(), newAdmin); _setAdmin(newAdmin); } /** * @dev The storage slot of the UpgradeableBeacon contract which defines the implementation for this proxy. * This is bytes32(uint256(keccak256('eip1967.proxy.beacon')) - 1)) and is validated in the constructor. */ bytes32 internal constant _BEACON_SLOT = 0xa3f0ad74e5423aebfd80d3ef4346578335a9a72aeaee59ff6cb3582b35133d50; /** * @dev Emitted when the beacon is upgraded. */ event BeaconUpgraded(address indexed beacon); /** * @dev Returns the current beacon. */ function _getBeacon() internal view returns (address) { return StorageSlot.getAddressSlot(_BEACON_SLOT).value; } /** * @dev Stores a new beacon in the EIP1967 beacon slot. */ function _setBeacon(address newBeacon) private { require(Address.isContract(newBeacon), "ERC1967: new beacon is not a contract"); require( Address.isContract(IBeacon(newBeacon).implementation()), "ERC1967: beacon implementation is not a contract" ); StorageSlot.getAddressSlot(_BEACON_SLOT).value = newBeacon; } /** * @dev Perform beacon upgrade with additional setup call. Note: This upgrades the address of the beacon, it does * not upgrade the implementation contained in the beacon (see {UpgradeableBeacon-_setImplementation} for that). * * Emits a {BeaconUpgraded} event. */ function _upgradeBeaconToAndCall( address newBeacon, bytes memory data, bool forceCall ) internal { _setBeacon(newBeacon); emit BeaconUpgraded(newBeacon); if (data.length > 0 || forceCall) { Address.functionDelegateCall(IBeacon(newBeacon).implementation(), data); } } }
/_openzeppelin/contracts/proxy/beacon/IBeacon.sol
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (proxy/beacon/IBeacon.sol) pragma solidity ^0.8.0; /** * @dev This is the interface that {BeaconProxy} expects of its beacon. */ interface IBeacon { /** * @dev Must return an address that can be used as a delegate call target. * * {BeaconProxy} will check that this address is a contract. */ function implementation() external view returns (address); }
/_openzeppelin/contracts/proxy/utils/UUPSUpgradeable.sol
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (proxy/utils/UUPSUpgradeable.sol) pragma solidity ^0.8.0; import "../ERC1967/ERC1967Upgrade.sol"; /** * @dev An upgradeability mechanism designed for UUPS proxies. The functions included here can perform an upgrade of an * {ERC1967Proxy}, when this contract is set as the implementation behind such a proxy. * * A security mechanism ensures that an upgrade does not turn off upgradeability accidentally, although this risk is * reinstated if the upgrade retains upgradeability but removes the security mechanism, e.g. by replacing * `UUPSUpgradeable` with a custom implementation of upgrades. * * The {_authorizeUpgrade} function must be overridden to include access restriction to the upgrade mechanism. * * _Available since v4.1._ */ abstract contract UUPSUpgradeable is ERC1967Upgrade { /// @custom:oz-upgrades-unsafe-allow state-variable-immutable state-variable-assignment address private immutable __self = address(this); /** * @dev Check that the execution is being performed through a delegatecall call and that the execution context is * a proxy contract with an implementation (as defined in ERC1967) pointing to self. This should only be the case * for UUPS and transparent proxies that are using the current contract as their implementation. Execution of a * function through ERC1167 minimal proxies (clones) would not normally pass this test, but is not guaranteed to * fail. */ modifier onlyProxy() { require(address(this) != __self, "Function must be called through delegatecall"); require(_getImplementation() == __self, "Function must be called through active proxy"); _; } /** * @dev Upgrade the implementation of the proxy to `newImplementation`. * * Calls {_authorizeUpgrade}. * * Emits an {Upgraded} event. */ function upgradeTo(address newImplementation) external virtual onlyProxy { _authorizeUpgrade(newImplementation); _upgradeToAndCallSecure(newImplementation, new bytes(0), false); } /** * @dev Upgrade the implementation of the proxy to `newImplementation`, and subsequently execute the function call * encoded in `data`. * * Calls {_authorizeUpgrade}. * * Emits an {Upgraded} event. */ function upgradeToAndCall(address newImplementation, bytes memory data) external payable virtual onlyProxy { _authorizeUpgrade(newImplementation); _upgradeToAndCallSecure(newImplementation, data, true); } /** * @dev Function that should revert when `msg.sender` is not authorized to upgrade the contract. Called by * {upgradeTo} and {upgradeToAndCall}. * * Normally, this function will use an xref:access.adoc[access control] modifier such as {Ownable-onlyOwner}. * * ```solidity * function _authorizeUpgrade(address) internal override onlyOwner {} * ``` */ function _authorizeUpgrade(address newImplementation) internal virtual; }
/_openzeppelin/contracts/utils/Address.sol
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (utils/Address.sol) pragma solidity ^0.8.0; /** * @dev Collection of functions related to the address type */ library Address { /** * @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 * ==== */ function isContract(address account) internal view returns (bool) { // This method relies on extcodesize, which returns 0 for contracts in // construction, since the code is only stored at the end of the // constructor execution. uint256 size; assembly { size := extcodesize(account) } return size > 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 Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ */ function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) { return functionDelegateCall(target, data, "Address: low-level delegate call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ */ function functionDelegateCall( address target, bytes memory data, string memory errorMessage ) internal returns (bytes memory) { require(isContract(target), "Address: delegate call to non-contract"); (bool success, bytes memory returndata) = target.delegatecall(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 assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert(errorMessage); } } } }
/_openzeppelin/contracts/utils/StorageSlot.sol
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (utils/StorageSlot.sol) pragma solidity ^0.8.0; /** * @dev Library for reading and writing primitive types to specific storage slots. * * Storage slots are often used to avoid storage conflict when dealing with upgradeable contracts. * This library helps with reading and writing to such slots without the need for inline assembly. * * The functions in this library return Slot structs that contain a `value` member that can be used to read or write. * * Example usage to set ERC1967 implementation slot: * ``` * contract ERC1967 { * bytes32 internal constant _IMPLEMENTATION_SLOT = 0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc; * * function _getImplementation() internal view returns (address) { * return StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value; * } * * function _setImplementation(address newImplementation) internal { * require(Address.isContract(newImplementation), "ERC1967: new implementation is not a contract"); * StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value = newImplementation; * } * } * ``` * * _Available since v4.1 for `address`, `bool`, `bytes32`, and `uint256`._ */ library StorageSlot { struct AddressSlot { address value; } struct BooleanSlot { bool value; } struct Bytes32Slot { bytes32 value; } struct Uint256Slot { uint256 value; } /** * @dev Returns an `AddressSlot` with member `value` located at `slot`. */ function getAddressSlot(bytes32 slot) internal pure returns (AddressSlot storage r) { assembly { r.slot := slot } } /** * @dev Returns an `BooleanSlot` with member `value` located at `slot`. */ function getBooleanSlot(bytes32 slot) internal pure returns (BooleanSlot storage r) { assembly { r.slot := slot } } /** * @dev Returns an `Bytes32Slot` with member `value` located at `slot`. */ function getBytes32Slot(bytes32 slot) internal pure returns (Bytes32Slot storage r) { assembly { r.slot := slot } } /** * @dev Returns an `Uint256Slot` with member `value` located at `slot`. */ function getUint256Slot(bytes32 slot) internal pure returns (Uint256Slot storage r) { assembly { r.slot := slot } } }
/_openzeppelin/contracts/utils/math/Math.sol
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (utils/math/Math.sol) pragma solidity ^0.8.0; /** * @dev Standard math utilities missing in the Solidity language. */ library Math { /** * @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 / b + (a % b == 0 ? 0 : 1); } }
/_openzeppelin/contracts/utils/structs/EnumerableSet.sol
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (utils/structs/EnumerableSet.sol) pragma solidity ^0.8.0; /** * @dev Library for managing * https://en.wikipedia.org/wiki/Set_(abstract_data_type)[sets] of primitive * types. * * Sets have the following properties: * * - Elements are added, removed, and checked for existence in constant time * (O(1)). * - Elements are enumerated in O(n). No guarantees are made on the ordering. * * ``` * contract Example { * // Add the library methods * using EnumerableSet for EnumerableSet.AddressSet; * * // Declare a set state variable * EnumerableSet.AddressSet private mySet; * } * ``` * * As of v3.3.0, sets of type `bytes32` (`Bytes32Set`), `address` (`AddressSet`) * and `uint256` (`UintSet`) are supported. */ library EnumerableSet { // To implement this library for multiple types with as little code // repetition as possible, we write it in terms of a generic Set type with // bytes32 values. // The Set implementation uses private functions, and user-facing // implementations (such as AddressSet) are just wrappers around the // underlying Set. // This means that we can only create new EnumerableSets for types that fit // in bytes32. struct Set { // Storage of set values bytes32[] _values; // Position of the value in the `values` array, plus 1 because index 0 // means a value is not in the set. mapping(bytes32 => uint256) _indexes; } /** * @dev Add a value to a set. O(1). * * Returns true if the value was added to the set, that is if it was not * already present. */ function _add(Set storage set, bytes32 value) private returns (bool) { if (!_contains(set, value)) { set._values.push(value); // The value is stored at length-1, but we add 1 to all indexes // and use 0 as a sentinel value set._indexes[value] = set._values.length; return true; } else { return false; } } /** * @dev Removes a value from a set. O(1). * * Returns true if the value was removed from the set, that is if it was * present. */ function _remove(Set storage set, bytes32 value) private returns (bool) { // We read and store the value's index to prevent multiple reads from the same storage slot uint256 valueIndex = set._indexes[value]; if (valueIndex != 0) { // Equivalent to contains(set, value) // To delete an element from the _values array in O(1), we swap the element to delete with the last one in // the array, and then remove the last element (sometimes called as 'swap and pop'). // This modifies the order of the array, as noted in {at}. uint256 toDeleteIndex = valueIndex - 1; uint256 lastIndex = set._values.length - 1; if (lastIndex != toDeleteIndex) { bytes32 lastvalue = set._values[lastIndex]; // Move the last value to the index where the value to delete is set._values[toDeleteIndex] = lastvalue; // Update the index for the moved value set._indexes[lastvalue] = valueIndex; // Replace lastvalue's index to valueIndex } // Delete the slot where the moved value was stored set._values.pop(); // Delete the index for the deleted slot delete set._indexes[value]; return true; } else { return false; } } /** * @dev Returns true if the value is in the set. O(1). */ function _contains(Set storage set, bytes32 value) private view returns (bool) { return set._indexes[value] != 0; } /** * @dev Returns the number of values on the set. O(1). */ function _length(Set storage set) private view returns (uint256) { return set._values.length; } /** * @dev Returns the value stored at position `index` in the set. O(1). * * Note that there are no guarantees on the ordering of values inside the * array, and it may change when more values are added or removed. * * Requirements: * * - `index` must be strictly less than {length}. */ function _at(Set storage set, uint256 index) private view returns (bytes32) { return set._values[index]; } /** * @dev Return the entire set in an array * * WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed * to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that * this function has an unbounded cost, and using it as part of a state-changing function may render the function * uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block. */ function _values(Set storage set) private view returns (bytes32[] memory) { return set._values; } // Bytes32Set struct Bytes32Set { Set _inner; } /** * @dev Add a value to a set. O(1). * * Returns true if the value was added to the set, that is if it was not * already present. */ function add(Bytes32Set storage set, bytes32 value) internal returns (bool) { return _add(set._inner, value); } /** * @dev Removes a value from a set. O(1). * * Returns true if the value was removed from the set, that is if it was * present. */ function remove(Bytes32Set storage set, bytes32 value) internal returns (bool) { return _remove(set._inner, value); } /** * @dev Returns true if the value is in the set. O(1). */ function contains(Bytes32Set storage set, bytes32 value) internal view returns (bool) { return _contains(set._inner, value); } /** * @dev Returns the number of values in the set. O(1). */ function length(Bytes32Set storage set) internal view returns (uint256) { return _length(set._inner); } /** * @dev Returns the value stored at position `index` in the set. O(1). * * Note that there are no guarantees on the ordering of values inside the * array, and it may change when more values are added or removed. * * Requirements: * * - `index` must be strictly less than {length}. */ function at(Bytes32Set storage set, uint256 index) internal view returns (bytes32) { return _at(set._inner, index); } /** * @dev Return the entire set in an array * * WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed * to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that * this function has an unbounded cost, and using it as part of a state-changing function may render the function * uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block. */ function values(Bytes32Set storage set) internal view returns (bytes32[] memory) { return _values(set._inner); } // AddressSet struct AddressSet { Set _inner; } /** * @dev Add a value to a set. O(1). * * Returns true if the value was added to the set, that is if it was not * already present. */ function add(AddressSet storage set, address value) internal returns (bool) { return _add(set._inner, bytes32(uint256(uint160(value)))); } /** * @dev Removes a value from a set. O(1). * * Returns true if the value was removed from the set, that is if it was * present. */ function remove(AddressSet storage set, address value) internal returns (bool) { return _remove(set._inner, bytes32(uint256(uint160(value)))); } /** * @dev Returns true if the value is in the set. O(1). */ function contains(AddressSet storage set, address value) internal view returns (bool) { return _contains(set._inner, bytes32(uint256(uint160(value)))); } /** * @dev Returns the number of values in the set. O(1). */ function length(AddressSet storage set) internal view returns (uint256) { return _length(set._inner); } /** * @dev Returns the value stored at position `index` in the set. O(1). * * Note that there are no guarantees on the ordering of values inside the * array, and it may change when more values are added or removed. * * Requirements: * * - `index` must be strictly less than {length}. */ function at(AddressSet storage set, uint256 index) internal view returns (address) { return address(uint160(uint256(_at(set._inner, index)))); } /** * @dev Return the entire set in an array * * WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed * to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that * this function has an unbounded cost, and using it as part of a state-changing function may render the function * uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block. */ function values(AddressSet storage set) internal view returns (address[] memory) { bytes32[] memory store = _values(set._inner); address[] memory result; assembly { result := store } return result; } // UintSet struct UintSet { Set _inner; } /** * @dev Add a value to a set. O(1). * * Returns true if the value was added to the set, that is if it was not * already present. */ function add(UintSet storage set, uint256 value) internal returns (bool) { return _add(set._inner, bytes32(value)); } /** * @dev Removes a value from a set. O(1). * * Returns true if the value was removed from the set, that is if it was * present. */ function remove(UintSet storage set, uint256 value) internal returns (bool) { return _remove(set._inner, bytes32(value)); } /** * @dev Returns true if the value is in the set. O(1). */ function contains(UintSet storage set, uint256 value) internal view returns (bool) { return _contains(set._inner, bytes32(value)); } /** * @dev Returns the number of values on the set. O(1). */ function length(UintSet storage set) internal view returns (uint256) { return _length(set._inner); } /** * @dev Returns the value stored at position `index` in the set. O(1). * * Note that there are no guarantees on the ordering of values inside the * array, and it may change when more values are added or removed. * * Requirements: * * - `index` must be strictly less than {length}. */ function at(UintSet storage set, uint256 index) internal view returns (uint256) { return uint256(_at(set._inner, index)); } /** * @dev Return the entire set in an array * * WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed * to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that * this function has an unbounded cost, and using it as part of a state-changing function may render the function * uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block. */ function values(UintSet storage set) internal view returns (uint256[] memory) { bytes32[] memory store = _values(set._inner); uint256[] memory result; assembly { result := store } return result; } }
/_openzeppelin/contracts-upgradeable/access/OwnableUpgradeable.sol
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (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 Returns the address of the current owner. */ function owner() public view virtual returns (address) { return _owner; } /** * @dev Throws if called by any account other than the owner. */ modifier onlyOwner() { 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; }
/_openzeppelin/contracts-upgradeable/proxy/utils/Initializable.sol
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.5.0) (proxy/utils/Initializable.sol) pragma solidity ^0.8.0; 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. * * 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 initialize the implementation contract, you can either invoke the * initializer manually, or you can include a constructor to automatically mark it as initialized when it is deployed: * * [.hljs-theme-light.nopadding] * ``` * /// @custom:oz-upgrades-unsafe-allow constructor * constructor() initializer {} * ``` * ==== */ abstract contract Initializable { /** * @dev Indicates that the contract has been initialized. */ bool private _initialized; /** * @dev Indicates that the contract is in the process of being initialized. */ bool private _initializing; /** * @dev Modifier to protect an initializer function from being invoked twice. */ modifier initializer() { // If the contract is initializing we ignore whether _initialized is set in order to support multiple // inheritance patterns, but we only do this in the context of a constructor, because in other contexts the // contract may have been reentered. require(_initializing ? _isConstructor() : !_initialized, "Initializable: contract is already initialized"); bool isTopLevelCall = !_initializing; if (isTopLevelCall) { _initializing = true; _initialized = true; } _; if (isTopLevelCall) { _initializing = false; } } /** * @dev Modifier to protect an initialization function so that it can only be invoked by functions with the * {initializer} modifier, directly or indirectly. */ modifier onlyInitializing() { require(_initializing, "Initializable: contract is not initializing"); _; } function _isConstructor() private view returns (bool) { return !AddressUpgradeable.isContract(address(this)); } }
/_openzeppelin/contracts-upgradeable/utils/AddressUpgradeable.sol
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.5.0) (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 assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert(errorMessage); } } } }
/_openzeppelin/contracts-upgradeable/utils/ContextUpgradeable.sol
// 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; }
/contracts/common/UUPSOwnableUpgradeable.sol
// SPDX-License-Identifier: LGPL-3.0-only pragma solidity 0.8.11; import "@openzeppelin/contracts/proxy/utils/UUPSUpgradeable.sol"; import "@openzeppelin/contracts-upgradeable/access/OwnableUpgradeable.sol"; /** * @title A contract that links UUPSUUpgradeable with OwanbleUpgradeable to gate upgrades. */ abstract contract UUPSOwnableUpgradeable is UUPSUpgradeable, OwnableUpgradeable { /** * @notice Guard method for UUPS (Universal Upgradable Proxy Standard) * See: https://docs.openzeppelin.com/contracts/4.x/api/proxy#transparent-vs-uups * @dev This methods overrides the virtual one in UUPSUpgradeable and * adds the onlyOwner modifer. */ // solhint-disable-next-line no-empty-blocks function _authorizeUpgrade(address) internal override onlyOwner {} }
/contracts/common/UsingRegistryUpgradeable.sol
//SPDX-License-Identifier: LGPL-3.0-only pragma solidity 0.8.11; import "@openzeppelin/contracts-upgradeable/proxy/utils/Initializable.sol"; import "../interfaces/IAccounts.sol"; import "../interfaces/IElection.sol"; import "../interfaces/IGoldToken.sol"; import "../interfaces/ILockedGold.sol"; import "../interfaces/IRegistry.sol"; /** * @title A helper for getting Celo core contracts from the Registry. */ abstract contract UsingRegistryUpgradeable is Initializable { /** * @notice Initializes the UsingRegistryUpgradable contract in an upgradable scenario * @param _registry The address of the Registry. For convenience, if the zero address is * provided, the registry is set to the canonical Registry address, i.e. 0x0...ce10. This * parameter should only be a non-zero address when testing. */ // solhint-disable-next-line func-name-mixedcase function __UsingRegistry_init(address _registry) internal onlyInitializing { if (_registry == address(0)) { registry = IRegistry(CANONICAL_REGISTRY); } else { registry = IRegistry(_registry); } } /// @notice The canonical address of the Registry. address internal constant CANONICAL_REGISTRY = 0x000000000000000000000000000000000000ce10; /// @notice The registry ID for the Accounts contract. bytes32 private constant ACCOUNTS_REGISTRY_ID = keccak256(abi.encodePacked("Accounts")); /// @notice The registry ID for the Election contract. bytes32 private constant ELECTION_REGISTRY_ID = keccak256(abi.encodePacked("Election")); /// @notice The registry ID for the GoldToken contract. bytes32 private constant GOLD_TOKEN_REGISTRY_ID = keccak256(abi.encodePacked("GoldToken")); /// @notice The registry ID for the LockedGold contract. bytes32 private constant LOCKED_GOLD_REGISTRY_ID = keccak256(abi.encodePacked("LockedGold")); /// @notice The Registry. IRegistry public registry; /** * @notice Gets the Accounts contract from the Registry. * @return The Accounts contract from the Registry. */ function getAccounts() internal view returns (IAccounts) { return IAccounts(registry.getAddressForOrDie(ACCOUNTS_REGISTRY_ID)); } /** * @notice Gets the Election contract from the Registry. * @return The Election contract from the Registry. */ function getElection() internal view returns (IElection) { return IElection(registry.getAddressForOrDie(ELECTION_REGISTRY_ID)); } /** * @notice Gets the GoldToken contract from the Registry. * @return The GoldToken contract from the Registry. */ function getGoldToken() internal view returns (IGoldToken) { return IGoldToken(registry.getAddressForOrDie(GOLD_TOKEN_REGISTRY_ID)); } /** * @notice Gets the LockedGold contract from the Registry. * @return The LockedGold contract from the Registry. */ function getLockedGold() internal view returns (ILockedGold) { return ILockedGold(registry.getAddressForOrDie(LOCKED_GOLD_REGISTRY_ID)); } }
/contracts/interfaces/IAccount.sol
//SPDX-License-Identifier: LGPL-3.0-only pragma solidity 0.8.11; interface IAccount { function getTotalCelo() external view returns (uint256); function getCeloForGroup(address) external view returns (uint256); function scheduleVotes(address[] calldata group, uint256[] calldata votes) external payable; function scheduledVotesForGroup(address group) external returns (uint256); function scheduleWithdrawals( address beneficiary, address[] calldata group, uint256[] calldata withdrawals ) external; }
/contracts/interfaces/IAccounts.sol
//SPDX-License-Identifier: LGPL-3.0-only pragma solidity 0.8.11; interface IAccounts { function isAccount(address) external view returns (bool); function voteSignerToAccount(address) external view returns (address); function validatorSignerToAccount(address) external view returns (address); function attestationSignerToAccount(address) external view returns (address); function signerToAccount(address) external view returns (address); function getAttestationSigner(address) external view returns (address); function getValidatorSigner(address) external view returns (address); function getVoteSigner(address) external view returns (address); function hasAuthorizedVoteSigner(address) external view returns (bool); function hasAuthorizedValidatorSigner(address) external view returns (bool); function hasAuthorizedAttestationSigner(address) external view returns (bool); function setAccountDataEncryptionKey(bytes calldata) external; function setMetadataURL(string calldata) external; function setName(string calldata) external; function setWalletAddress( address, uint8, bytes32, bytes32 ) external; function setAccount( string calldata, bytes calldata, address, uint8, bytes32, bytes32 ) external; function getDataEncryptionKey(address) external view returns (bytes memory); function getWalletAddress(address) external view returns (address); function getMetadataURL(address) external view returns (string memory); function batchGetMetadataURL(address[] calldata) external view returns (uint256[] memory, bytes memory); function getName(address) external view returns (string memory); function authorizeVoteSigner( address, uint8, bytes32, bytes32 ) external; function authorizeValidatorSigner( address, uint8, bytes32, bytes32 ) external; function authorizeValidatorSignerWithPublicKey( address, uint8, bytes32, bytes32, bytes calldata ) external; function authorizeValidatorSignerWithKeys( address, uint8, bytes32, bytes32, bytes calldata, bytes calldata, bytes calldata ) external; function authorizeAttestationSigner( address, uint8, bytes32, bytes32 ) external; function createAccount() external returns (bool); }
/contracts/interfaces/IElection.sol
//SPDX-License-Identifier: LGPL-3.0-only pragma solidity 0.8.11; interface IElection { function electValidatorSigners() external view returns (address[] memory); function electNValidatorSigners(uint256, uint256) external view returns (address[] memory); function vote( address, uint256, address, address ) external returns (bool); function activate(address) external returns (bool); function activateForAccount(address, address) external returns (bool); function revokeActive( address, uint256, address, address, uint256 ) external returns (bool); function revokeAllActive( address, address, address, uint256 ) external returns (bool); function revokePending( address, uint256, address, address, uint256 ) external returns (bool); function markGroupIneligible(address) external; function markGroupEligible( address, address, address ) external; function forceDecrementVotes( address, uint256, address[] calldata, address[] calldata, uint256[] calldata ) external returns (uint256); // view functions function getElectableValidators() external view returns (uint256, uint256); function getElectabilityThreshold() external view returns (uint256); function getNumVotesReceivable(address) external view returns (uint256); function getTotalVotes() external view returns (uint256); function getActiveVotes() external view returns (uint256); function getTotalVotesByAccount(address) external view returns (uint256); function getPendingVotesForGroupByAccount(address, address) external view returns (uint256); function getActiveVotesForGroupByAccount(address, address) external view returns (uint256); function getTotalVotesForGroupByAccount(address, address) external view returns (uint256); function getActiveVoteUnitsForGroupByAccount(address, address) external view returns (uint256); function getTotalVotesForGroup(address) external view returns (uint256); function getActiveVotesForGroup(address) external view returns (uint256); function getPendingVotesForGroup(address) external view returns (uint256); function getGroupEligibility(address) external view returns (bool); function getGroupEpochRewards( address, uint256, uint256[] calldata ) external view returns (uint256); function getGroupsVotedForByAccount(address) external view returns (address[] memory); function getEligibleValidatorGroups() external view returns (address[] memory); function getTotalVotesForEligibleValidatorGroups() external view returns (address[] memory, uint256[] memory); function getCurrentValidatorSigners() external view returns (address[] memory); function canReceiveVotes(address, uint256) external view returns (bool); function hasActivatablePendingVotes(address, address) external view returns (bool); // only owner function setElectableValidators(uint256, uint256) external returns (bool); function setMaxNumGroupsVotedFor(uint256) external returns (bool); function setElectabilityThreshold(uint256) external returns (bool); // only VM function distributeEpochRewards( address, uint256, address, address ) external; function maxNumGroupsVotedFor() external view returns (uint256); }
/contracts/interfaces/IGoldToken.sol
// SPDX-License-Identifier: LGPL-3.0-only pragma solidity 0.8.11; interface IGoldToken { function transfer(address to, uint256 value) external returns (bool); function transferWithComment( address to, uint256 value, string calldata comment ) external returns (bool); function approve(address spender, uint256 value) external returns (bool); function increaseAllowance(address spender, uint256 value) external returns (bool); function decreaseAllowance(address spender, uint256 value) external returns (bool); function transferFrom( address from, address to, uint256 value ) external returns (bool); function name() external view returns (string memory); function symbol() external view returns (string memory); function decimals() external view returns (uint8); function totalSupply() external view returns (uint256); function allowance(address owner, address spender) external view returns (uint256); function balanceOf(address owner) external view returns (uint256); }
/contracts/interfaces/ILockedGold.sol
//SPDX-License-Identifier: LGPL-3.0-only pragma solidity 0.8.11; interface ILockedGold { function unlockingPeriod() external view returns (uint256); function incrementNonvotingAccountBalance(address, uint256) external; function decrementNonvotingAccountBalance(address, uint256) external; function getAccountTotalLockedGold(address) external view returns (uint256); function getTotalLockedGold() external view returns (uint256); function getPendingWithdrawal(address, uint256) external view returns (uint256, uint256); function getPendingWithdrawals(address) external view returns (uint256[] memory, uint256[] memory); function getTotalPendingWithdrawals(address) external view returns (uint256); function lock() external payable; function unlock(uint256) external; function relock(uint256, uint256) external; function withdraw(uint256) external; function slash( address account, uint256 penalty, address reporter, uint256 reward, address[] calldata lessers, address[] calldata greaters, uint256[] calldata indices ) external; function isSlasher(address) external view returns (bool); }
/contracts/interfaces/IRegistry.sol
//SPDX-License-Identifier: LGPL-3.0-only pragma solidity 0.8.11; interface IRegistry { function setAddressFor(string calldata, address) external; function getAddressForOrDie(bytes32) external view returns (address); function getAddressFor(bytes32) external view returns (address); function getAddressForStringOrDie(string calldata identifier) external view returns (address); function getAddressForString(string calldata identifier) external view returns (address); function isOneOf(bytes32[] calldata, address) external view returns (bool); }
/contracts/interfaces/IStakedCelo.sol
//SPDX-License-Identifier: LGPL-3.0-only pragma solidity 0.8.11; interface IStakedCelo { function totalSupply() external view returns (uint256); function mint(address, uint256) external; function burn(address, uint256) external; function transfer(address, uint256) external returns (bool); function transferFrom( address, address, uint256 ) external returns (bool); }
Contract ABI
[{"type":"constructor","stateMutability":"nonpayable","inputs":[]},{"type":"error","name":"FailedToAddActiveGroup","inputs":[{"type":"address","name":"group","internalType":"address"}]},{"type":"error","name":"FailedToAddDeprecatedGroup","inputs":[{"type":"address","name":"group","internalType":"address"}]},{"type":"error","name":"FailedToRemoveDeprecatedGroup","inputs":[{"type":"address","name":"group","internalType":"address"}]},{"type":"error","name":"GroupAlreadyAdded","inputs":[{"type":"address","name":"group","internalType":"address"}]},{"type":"error","name":"GroupNotActive","inputs":[{"type":"address","name":"group","internalType":"address"}]},{"type":"error","name":"MaxGroupsVotedForReached","inputs":[]},{"type":"error","name":"NoActiveGroups","inputs":[]},{"type":"error","name":"NoGroups","inputs":[]},{"type":"error","name":"NoVotableGroups","inputs":[]},{"type":"error","name":"ZeroWithdrawal","inputs":[]},{"type":"event","name":"AdminChanged","inputs":[{"type":"address","name":"previousAdmin","internalType":"address","indexed":false},{"type":"address","name":"newAdmin","internalType":"address","indexed":false}],"anonymous":false},{"type":"event","name":"BeaconUpgraded","inputs":[{"type":"address","name":"beacon","internalType":"address","indexed":true}],"anonymous":false},{"type":"event","name":"GroupActivated","inputs":[{"type":"address","name":"group","internalType":"address","indexed":true}],"anonymous":false},{"type":"event","name":"GroupDeprecated","inputs":[{"type":"address","name":"group","internalType":"address","indexed":true}],"anonymous":false},{"type":"event","name":"GroupRemoved","inputs":[{"type":"address","name":"group","internalType":"address","indexed":true}],"anonymous":false},{"type":"event","name":"OwnershipTransferred","inputs":[{"type":"address","name":"previousOwner","internalType":"address","indexed":true},{"type":"address","name":"newOwner","internalType":"address","indexed":true}],"anonymous":false},{"type":"event","name":"Upgraded","inputs":[{"type":"address","name":"implementation","internalType":"address","indexed":true}],"anonymous":false},{"type":"function","stateMutability":"nonpayable","outputs":[],"name":"activateGroup","inputs":[{"type":"address","name":"group","internalType":"address"}]},{"type":"function","stateMutability":"payable","outputs":[],"name":"deposit","inputs":[]},{"type":"function","stateMutability":"nonpayable","outputs":[],"name":"deprecateGroup","inputs":[{"type":"address","name":"group","internalType":"address"}]},{"type":"function","stateMutability":"view","outputs":[{"type":"address[]","name":"","internalType":"address[]"}],"name":"getDeprecatedGroups","inputs":[]},{"type":"function","stateMutability":"view","outputs":[{"type":"address[]","name":"","internalType":"address[]"}],"name":"getGroups","inputs":[]},{"type":"function","stateMutability":"nonpayable","outputs":[],"name":"initialize","inputs":[{"type":"address","name":"_registry","internalType":"address"},{"type":"address","name":"_owner","internalType":"address"}]},{"type":"function","stateMutability":"view","outputs":[{"type":"address","name":"","internalType":"address"}],"name":"owner","inputs":[]},{"type":"function","stateMutability":"view","outputs":[{"type":"address","name":"","internalType":"contract IRegistry"}],"name":"registry","inputs":[]},{"type":"function","stateMutability":"nonpayable","outputs":[],"name":"renounceOwnership","inputs":[]},{"type":"function","stateMutability":"nonpayable","outputs":[],"name":"setDependencies","inputs":[{"type":"address","name":"_stakedCelo","internalType":"address"},{"type":"address","name":"_account","internalType":"address"}]},{"type":"function","stateMutability":"view","outputs":[{"type":"uint256","name":"","internalType":"uint256"}],"name":"toCelo","inputs":[{"type":"uint256","name":"stCeloAmount","internalType":"uint256"}]},{"type":"function","stateMutability":"view","outputs":[{"type":"uint256","name":"","internalType":"uint256"}],"name":"toStakedCelo","inputs":[{"type":"uint256","name":"celoAmount","internalType":"uint256"}]},{"type":"function","stateMutability":"nonpayable","outputs":[],"name":"transferOwnership","inputs":[{"type":"address","name":"newOwner","internalType":"address"}]},{"type":"function","stateMutability":"nonpayable","outputs":[],"name":"upgradeTo","inputs":[{"type":"address","name":"newImplementation","internalType":"address"}]},{"type":"function","stateMutability":"payable","outputs":[],"name":"upgradeToAndCall","inputs":[{"type":"address","name":"newImplementation","internalType":"address"},{"type":"bytes","name":"data","internalType":"bytes"}]},{"type":"function","stateMutability":"nonpayable","outputs":[],"name":"withdraw","inputs":[{"type":"uint256","name":"stakedCeloAmount","internalType":"uint256"}]}]
Contract Creation Code
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