{"file_path":"contracts/strategies/idle/IdleCreditVault.sol","creation_status":"success","source_code":"// SPDX-License-Identifier: UNLICENSED\npragma solidity 0.8.10;\n\nimport \"../../interfaces/IIdleCDOStrategy.sol\";\nimport \"../../interfaces/IERC20Detailed.sol\";\n\nimport '@uniswap/v2-periphery/contracts/interfaces/IUniswapV2Router02.sol';\nimport \"@openzeppelin/contracts-upgradeable/access/OwnableUpgradeable.sol\";\nimport \"@openzeppelin/contracts-upgradeable/token/ERC20/utils/SafeERC20Upgradeable.sol\";\nimport \"@openzeppelin/contracts-upgradeable/security/ReentrancyGuardUpgradeable.sol\";\nimport \"@openzeppelin/contracts-upgradeable/token/ERC20/ERC20Upgradeable.sol\";\n\ninterface IIdleCDOEpochVariant {\n function isEpochRunning() external view returns (bool);\n function epochEndDate() external view returns (uint256);\n function expectedEpochInterest() external view returns (uint256);\n function pendingWithdrawFees() external view returns (uint256);\n function fee() external view returns (uint256);\n function getContractValue() external view returns (uint256);\n function defaulted() external view returns (bool);\n}\n\nerror NotAllowed();\n\ncontract IdleCreditVault is\n Initializable,\n OwnableUpgradeable,\n ERC20Upgradeable,\n ReentrancyGuardUpgradeable,\n IIdleCDOStrategy\n{\n using SafeERC20Upgradeable for IERC20Detailed;\n\n /// @notice underlying token address (pool currency for Clearpool)\n address public override token;\n /// @notice decimals of the underlying asset\n uint256 public override tokenDecimals;\n /// @notice one underlying token\n uint256 public override oneToken;\n /// @notice underlying ERC20 token contract (pool currency for Clearpool)\n IERC20Detailed public underlyingToken;\n /// @notice address of the IdleCDO\n address public idleCDO;\n /// @notice one year, used to calculate the APR\n uint256 public constant YEAR = 365 days;\n /// @notice latest saved apr, already scaled to include the buffer period\n uint256 public lastApr;\n /// @notice address of the borrower\n address public borrower;\n /// @notice address of the manager\n address public manager;\n /// @notice user withdraw requests\n mapping (address => uint256) public withdrawsRequests;\n /// @notice user instant withdraw requests\n mapping (address => uint256) public instantWithdrawsRequests;\n /// @notice total withdraw requests\n uint256 public pendingWithdraws;\n /// @notice pending instant withdraw requests\n uint256 public pendingInstantWithdraws;\n /// @notice counter for epoch deposits\n uint256 public totEpochDeposits;\n /// @notice flag to allow transfers\n bool public canTransfer;\n /// @notice last withdraw request epoch for a user\n mapping (address => uint256) public lastWithdrawRequest;\n /// @notice current epoch number\n uint256 public epochNumber;\n /// @notice unscaled apr\n uint256 public unscaledApr;\n /// @notice constant representing a 100% fee used for accounting\n uint256 private constant FULL_ALLOC = 100_000;\n /// @notice total principal for APR=0 requests in the current epoch\n uint256 public apr0TotalPrincipal;\n struct Apr0UserData {\n uint256 principal;\n uint256 principalEpoch;\n uint256 settledPrincipal;\n uint256 settledInterest;\n }\n /// @notice APR=0 withdraw data per user\n mapping (address => Apr0UserData) public apr0Users;\n /// @notice net APR=0 interest rate per epoch, scaled by 1e18\n mapping (uint256 => uint256) public apr0RateByEpoch;\n /// @notice default maximum allowed scaled apr\n uint256 public constant DEFAULT_MAX_APR = 20e18;\n /// @notice maximum allowed scaled apr, 0 disables the cap\n uint256 public maxApr;\n\n /// @custom:oz-upgrades-unsafe-allow constructor\n constructor() {\n token = address(1);\n }\n\n /// @notice can be only called once\n /// @param _underlyingToken address of the underlying token (pool currency)\n function initialize(\n address _underlyingToken,\n address _owner,\n address _manager,\n address _borrower,\n string memory borrowerName,\n uint256 _apr\n ) public virtual initializer {\n OwnableUpgradeable.__Ownable_init();\n ReentrancyGuardUpgradeable.__ReentrancyGuard_init();\n require(token == address(0), \"Token is already initialized\");\n\n //----- // -------//\n token = _underlyingToken;\n underlyingToken = IERC20Detailed(token);\n tokenDecimals = underlyingToken.decimals();\n oneToken = 10**(tokenDecimals);\n borrower = _borrower;\n manager = _manager;\n maxApr = DEFAULT_MAX_APR;\n // on the first setup we set the lastApr equal to the unscaledApr\n lastApr = _apr;\n unscaledApr = _apr;\n\n // name will be like: Pareto Credit Vault Borrower\n // symbol will be like: Borrower\n ERC20Upgradeable.__ERC20_init(\n _concat(string(\"Pareto Credit Vault \"), borrowerName),\n borrowerName\n );\n //------//-------//\n\n transferOwnership(_owner);\n }\n\n /// @notice strategy token decimals\n /// @dev equal to underlying token decimals\n /// @return number of decimals\n function decimals() public view override returns (uint8) {\n return uint8(tokenDecimals);\n }\n\n /// @notice strategy token address\n function strategyToken() external view override returns (address) {\n return address(this);\n }\n\n /// @notice return strategy token price which is always 1\n /// @return price in underlyings\n function price() public view virtual override returns (uint256) {\n return oneToken;\n }\n\n /// @notice current fixed apr for the epoch\n function getApr() external view returns (uint256) {\n return lastApr;\n }\n\n /// @notice set manager address\n /// @param _manager address of the new manager\n function setManager(address _manager) external onlyOwner {\n manager = _manager;\n }\n\n /// @notice set borrower address\n /// @param _borrower address of the new borrower\n function setBorrower(address _borrower) external onlyOwner {\n require(_borrower != address(0), \"IS_0\");\n borrower = _borrower;\n }\n\n /// @notice set maximum allowed scaled apr, 0 disables the cap\n /// @param _maxApr new max apr\n function setMaxApr(uint256 _maxApr) external onlyOwner {\n maxApr = _maxApr;\n }\n\n /// @notice set both the scaled and unscaled apr\n /// @dev only cdo and manager can set the apr.\n /// @param _unscaledApr unscaled apr\n /// @param _apr scaled apr\n function setAprs(uint256 _unscaledApr, uint256 _apr) external {\n unscaledApr = _unscaledApr;\n // here we also check that msg.sender is allowed\n setApr(_apr);\n }\n\n /// @notice set the fixed apr\n /// @dev only cdo and manager can set the apr. If manager manually set apr from \n /// here it will not be scaled to include the buffer period\n function setApr(uint256 _apr) public {\n address _cdo = idleCDO;\n\n // if cdo is not yet set we skip the check (this can happen only during the setup)\n if (_cdo != address(0)) {\n if (msg.sender != _cdo && msg.sender != manager) revert NotAllowed();\n }\n uint256 _maxApr = maxApr;\n if (_maxApr != 0 && _apr > _maxApr) revert NotAllowed();\n lastApr = _apr;\n }\n\n /// @notice request withdraw of underlying token from the vault\n /// @dev we don't burn strategy tokens here, but we increase the withdraw requests\n /// @param _amount number of tokens claimable by the user\n /// @param _user address of the user\n /// @param _principal principal amount backing the withdraw request\n function requestWithdraw(uint256 _amount, address _user, uint256 _principal) external {\n _onlyIdleCDO();\n if (_amount == 0) return;\n // burn strategy tokens from cdo (we don't burn future interest here, only the principal)\n _burn(msg.sender, _principal);\n // mint equal amount of strategy tokens to the user as receipt (interest included), useful in case of default\n _mint(_user, _amount);\n // Global amount that stopEpoch must source from borrower/strategy for all pending receipts.\n pendingWithdraws += _amount;\n // save the epoch of the last withdraw request (buffer + epochDuration is 1 epoch)\n lastWithdrawRequest[_user] = epochNumber;\n // APR=0 requests keep separate accounting and settle interest at stopEpoch.\n // `_amount` here is the post-management-fee principal bucket for that flow.\n if (unscaledApr == 0) {\n _requestWithdrawApr0(_amount, _user);\n } else {\n // increase the withdraw requests for the user\n withdrawsRequests[_user] += _amount;\n }\n }\n\n /// @notice claim the withdraw request\n /// @dev we burn the strategy tokens and transfer the underlying tokens\n /// @param _user address of the user\n /// @return amount number of tokens claimed\n function claimWithdrawRequest(address _user) external returns (uint256 amount) {\n _onlyIdleCDO();\n // User should wait at least an epoch before claiming the withdraw. Once the epoch is over user can withdraw \n // at any time even if a new epoch started. \n // So if epochNumber is the same as the last withdraw request then we revert. Epoch number is increased at stopEpoch\n // NOTE: If a user does not claim a withdraw request and instead requests another withdraw, he will have to wait\n // for another epoch to claim both requests.\n // NOTE 2: if borrower defaults, old withdraw requests can still be claimed\n if (IIdleCDOEpochVariant(idleCDO).epochEndDate() != 0 && (epochNumber <= lastWithdrawRequest[_user])) {\n revert NotAllowed();\n }\n // settle APR=0 requests once the related epoch has ended\n _settleApr0(_user);\n Apr0UserData storage _apr0User = apr0Users[_user];\n // Claim includes:\n // - settled APR0 principal from finalized epochs\n // - still-open APR0 principal: if pool-close mode was used (_interest == 1), IdleCDO sets\n // epochEndDate = 0 and claims can be immediate, while _settleApr0 can still skip settlement\n // for the current request epoch (reqEpoch >= epochNumber).\n // - settled APR0 interest\n uint256 normalAmount = withdrawsRequests[_user];\n uint256 apr0PrincipalAmount = _apr0User.settledPrincipal + _apr0User.principal;\n uint256 apr0InterestAmount = _apr0User.settledInterest;\n amount = normalAmount + apr0PrincipalAmount + apr0InterestAmount;\n // burn strategy tokens 1:1 with the principal only (normal amount already includes interest)\n _burn(_user, normalAmount + apr0PrincipalAmount);\n withdrawsRequests[_user] = 0;\n lastWithdrawRequest[_user] = 0;\n if (apr0PrincipalAmount != 0 || apr0InterestAmount != 0) {\n delete apr0Users[_user];\n }\n underlyingToken.safeTransfer(_user, amount);\n }\n\n /// @notice request instant withdraw of underlying token from the vault\n /// @dev we burn strategy tokens here, and we increase the instant withdraw requests\n /// @param _amount number of tokens to withdraw\n /// @param _user address of the user\n function requestInstantWithdraw(uint256 _amount, address _user) external {\n _onlyIdleCDO();\n // burn strategy tokens from cdo\n _burn(msg.sender, _amount);\n \n // mint equal amount of strategy tokens to the user as receipt, useful in case of default\n _mint(_user, _amount);\n\n // increase the instant withdraw requests for the user\n instantWithdrawsRequests[_user] += _amount;\n // increase the total instant withdraw requests\n pendingInstantWithdraws += _amount;\n }\n\n /// @notice claim the instant withdraw request\n /// @dev we transfer the underlying tokens\n /// @param _user address of the user\n function claimInstantWithdrawRequest(address _user) external {\n _onlyIdleCDO();\n uint256 amount = instantWithdrawsRequests[_user];\n // burn strategy tokens from user\n _burn(_user, amount);\n\n instantWithdrawsRequests[_user] = 0;\n underlyingToken.safeTransfer(_user, amount);\n }\n\n /// @notice collect the instant withdraw funds\n /// @dev only IdleCDO can call this function\n /// @param _amount number of tokens to collect\n function collectInstantWithdrawFunds(uint256 _amount) external {\n _onlyIdleCDO();\n pendingInstantWithdraws -= _amount;\n underlyingToken.safeTransferFrom(idleCDO, address(this), _amount);\n }\n\n /// @notice collect the withdraw funds\n /// @dev only IdleCDO can call this function\n /// @param _amount number of tokens to collect\n function collectWithdrawFunds(uint256 _amount) external {\n _onlyIdleCDO();\n pendingWithdraws -= _amount;\n underlyingToken.safeTransferFrom(idleCDO, address(this), _amount);\n }\n\n /// @notice compute and apply APR=0 epoch deltas for stopEpoch\n /// @param _interest stopEpoch override interest (0 = expected epoch interest, 1 = repay all)\n /// @return _expInterest stopEpoch interest after APR0 adjustments\n /// @return _adjPendingWithdrawFees pending withdraw fees after APR0 adjustments\n function prepareStopEpochWithApr0(uint256 _interest) external returns (uint256 _expInterest, uint256 _adjPendingWithdrawFees) {\n _onlyIdleCDO();\n IIdleCDOEpochVariant _cdo = IIdleCDOEpochVariant(idleCDO);\n uint256 _pendingFees = _cdo.pendingWithdrawFees();\n uint256 _tvl = _cdo.getContractValue();\n _expInterest = _interest > 1 ? _interest : _cdo.expectedEpochInterest();\n _adjPendingWithdrawFees = _pendingFees;\n // Principal currently waiting for withdraw that was requested while APR was 0,\n // net of the upfront management fee charged at request time.\n uint256 _principal = apr0TotalPrincipal;\n\n // Fast path: no APR0 accounting needed.\n if (_principal == 0) {\n return (_expInterest, _adjPendingWithdrawFees);\n }\n // APR0 principal is only valid while APR is 0 for that request lifecycle.\n if (unscaledApr != 0) {\n revert NotAllowed();\n }\n\n uint256 _apr0NetInterest;\n // APR0 allocation is computed only when stopEpoch receives a real override interest.\n // _expectedInterest == 1 is the \"request all funds back\" sentinel and is handled in IdleCDO.\n if (_expInterest > 1 && _expInterest > _pendingFees) {\n // Remove already booked withdraw fees from the interest base before splitting.\n uint256 _interestNetOfFees = _expInterest - _pendingFees;\n // Total principal used for the pro-rata split:\n // IdleCDO TVL (which excludes APR0 requested principal) + APR0 principal bucket.\n uint256 _totalPrincipalForSplit = _tvl + _principal;\n if (_totalPrincipalForSplit != 0) {\n // APR0 users get a pro-rata share of realized interest.\n uint256 _apr0InterestGross = _interestNetOfFees * _principal / _totalPrincipalForSplit;\n if (_apr0InterestGross != 0) {\n // Same fee model as normal withdraw interest.\n uint256 _apr0Fee = _apr0InterestGross * _cdo.fee() / FULL_ALLOC;\n _apr0NetInterest = _apr0InterestGross - _apr0Fee;\n _adjPendingWithdrawFees += _apr0Fee;\n _expInterest -= _apr0NetInterest;\n }\n }\n }\n\n // Finalize one-epoch APR0 interest for current epoch only.\n if (_apr0NetInterest != 0) {\n // Funds owed to withdraw requesters increase by APR0 net interest.\n pendingWithdraws += _apr0NetInterest;\n // Save per-epoch net rate; each APR0 request accrues exactly once on its request epoch.\n apr0RateByEpoch[epochNumber] = (_apr0NetInterest * 1e18) / _principal;\n }\n // Close current APR0 bucket so it cannot accrue again on later stopEpoch calls.\n apr0TotalPrincipal = 0;\n }\n\n /// @notice settle APR=0 requests for a user once their epoch is finalized\n /// @param _user address of the user\n function _settleApr0(address _user) internal {\n Apr0UserData storage _apr0User = apr0Users[_user];\n uint256 _principal = _apr0User.principal;\n if (_principal == 0) {\n return;\n }\n uint256 _reqEpoch = _apr0User.principalEpoch;\n // Settle only after stopEpoch bumped epochNumber (ie after one full wait epoch).\n if (_reqEpoch >= epochNumber) {\n return;\n }\n // Move principal from \"open APR0 bucket\" to \"settled bucket\" (same principal, not duplicated).\n _apr0User.settledPrincipal += _principal;\n uint256 _rate = apr0RateByEpoch[_reqEpoch];\n if (_rate != 0) {\n // Convert per-epoch rate to claimable underlying interest.\n _apr0User.settledInterest += (_principal * _rate) / 1e18;\n }\n _apr0User.principal = 0;\n _apr0User.principalEpoch = 0;\n }\n\n function _requestWithdrawApr0(uint256 _amount, address _user) internal {\n // Settle any previous APR0 request first, then start/update current epoch bucket.\n _settleApr0(_user);\n Apr0UserData storage _apr0User = apr0Users[_user];\n if (_apr0User.principal == 0) {\n _apr0User.principalEpoch = epochNumber;\n }\n _apr0User.principal += _amount;\n // Epoch-level APR0 principal used only to compute stopEpoch APR0 pro-rata interest.\n apr0TotalPrincipal += _amount;\n }\n\n /// @notice Send funds to the IdleCDO\n /// @param _amount number of underlyings to transfer\n function sendInterestAndDeposits(uint256 _amount) external {\n _onlyIdleCDO();\n IERC20Detailed(token).safeTransfer(idleCDO, _amount);\n }\n\n /// @notice Burn strategy tokens from the CDO\n /// @param _amount number of strategy tokens (1:1 with underlyings) to burn\n function burnStrategyTokens(uint256 _amount) external {\n _onlyIdleCDO();\n _burn(msg.sender, _amount);\n }\n\n /// @notice Get funds from IdleCDO and mint strategy tokens. Funds are not sent to the borrower here\n /// @param _amount number of underlyings to transfer\n function deposit(uint256 _amount)\n external\n virtual\n override\n returns (uint256) {\n _onlyIdleCDO();\n if (_amount > 0) {\n underlyingToken.safeTransferFrom(msg.sender, address(this), _amount);\n _mint(msg.sender, _amount);\n }\n\n if (IIdleCDOEpochVariant(idleCDO).isEpochRunning()) {\n // deposit done on stopEpoch (before setting the var to false) so we reset the counter\n totEpochDeposits = 0;\n epochNumber += 1;\n } else {\n // deposit done between epochs so we increase the counter\n totEpochDeposits += _amount;\n }\n\n return _amount;\n }\n\n /// @notice Mint strategy tokens to the CDO without moving underlyings\n /// @dev Used for mid-epoch deposits that send funds directly to the borrower\n function mintStrategyTokens(uint256 _amount) external {\n _onlyIdleCDO();\n _mint(msg.sender, _amount);\n }\n \n /// @inheritdoc ERC20Upgradeable\n /// @dev we don't allow transfers of strategy tokens normally, transfers are allowed only after a default\n function _transfer(address sender, address recipient, uint256 amount) internal virtual override {\n if (msg.sender != idleCDO && !canTransfer) {\n revert NotAllowed();\n }\n super._transfer(sender, recipient, amount);\n }\n\n /// @notice set transferability of strategy tokens after a default\n /// @dev Manager-controlled manual switch. Transfers stay disabled by default because\n /// claims are address-bound and moving receipts can sever redeemability.\n function setCanTransfer(bool _canTransfer) external {\n if (msg.sender != manager || !IIdleCDOEpochVariant(idleCDO).defaulted()) {\n revert NotAllowed();\n }\n canTransfer = _canTransfer;\n }\n\n /// @notice allow to update whitelisted address\n function setWhitelistedCDO(address _cdo) external onlyOwner {\n require(_cdo != address(0), \"IS_0\");\n idleCDO = _cdo;\n }\n\n /// @notice Emergency method to rescue funds\n /// @param _token address of the token to transfer\n /// @param value amount of `_token` to transfer\n /// @param _to receiver address\n function transferToken(address _token, uint256 value, address _to) external onlyOwner {\n IERC20Detailed(_token).safeTransfer(_to, value);\n }\n\n /// @notice Modifier to make sure that caller os only the idleCDO contract\n function _onlyIdleCDO() internal view {\n if (msg.sender != idleCDO) {\n revert NotAllowed();\n }\n }\n\n /// @notice concat 2 strings in a single one\n /// @param a first string\n /// @param b second string\n /// @return new string with a and b concatenated\n function _concat(string memory a, string memory b) internal pure returns (string memory) {\n return string(abi.encodePacked(a, b));\n }\n\n /// @notice Not used as redeems happens only via requestWithdraw and requestInstantWithdraw\n function redeem(uint256 _amount)\n external\n override\n returns (uint256) {}\n\n /// @notice Not used as redeems happens only via requestWithdraw and requestInstantWithdraw\n function redeemUnderlying(uint256)\n external\n returns (uint256) {}\n\n /// @notice not used in this strategy\n function pullStkAAVE() \n external \n pure \n override \n returns (uint256) {}\n\n /// @notice not used for this strategy\n function getRewardTokens()\n external\n view\n override\n returns (address[] memory) {}\n\n /// @notice not used for this strategy\n function redeemRewards(bytes calldata)\n external\n override\n returns (uint256[] memory rewards) 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SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.9.0) (proxy/utils/Initializable.sol)\n\npragma solidity ^0.8.2;\n\nimport \"../../utils/AddressUpgradeable.sol\";\n\n/**\n * @dev This is a base contract to aid in writing upgradeable contracts, or any kind of contract that will be deployed\n * behind a proxy. Since proxied contracts do not make use of a constructor, it's common to move constructor logic to an\n * external initializer function, usually called `initialize`. It then becomes necessary to protect this initializer\n * function so it can only be called once. The {initializer} modifier provided by this contract will have this effect.\n *\n * The initialization functions use a version number. Once a version number is used, it is consumed and cannot be\n * reused. This mechanism prevents re-execution of each \"step\" but allows the creation of new initialization steps in\n * case an upgrade adds a module that needs to be initialized.\n *\n * For example:\n *\n * [.hljs-theme-light.nopadding]\n * ```solidity\n * contract MyToken is ERC20Upgradeable {\n * function initialize() initializer public {\n * __ERC20_init(\"MyToken\", \"MTK\");\n * }\n * }\n *\n * contract MyTokenV2 is MyToken, ERC20PermitUpgradeable {\n * function initializeV2() reinitializer(2) public {\n * __ERC20Permit_init(\"MyToken\");\n * }\n * }\n * ```\n *\n * TIP: To avoid leaving the proxy in an uninitialized state, the initializer function should be called as early as\n * possible by providing the encoded function call as the `_data` argument to {ERC1967Proxy-constructor}.\n *\n * CAUTION: When used with inheritance, manual care must be taken to not invoke a parent initializer twice, or to ensure\n * that all initializers are idempotent. This is not verified automatically as constructors are by Solidity.\n *\n * [CAUTION]\n * ====\n * Avoid leaving a contract uninitialized.\n *\n * An uninitialized contract can be taken over by an attacker. This applies to both a proxy and its implementation\n * contract, which may impact the proxy. To prevent the implementation contract from being used, you should invoke\n * the {_disableInitializers} function in the constructor to automatically lock it when it is deployed:\n *\n * [.hljs-theme-light.nopadding]\n * ```\n * /// @custom:oz-upgrades-unsafe-allow constructor\n * constructor() {\n * _disableInitializers();\n * }\n * ```\n * ====\n */\nabstract contract Initializable {\n /**\n * @dev Indicates that the contract has been initialized.\n * @custom:oz-retyped-from bool\n */\n uint8 private _initialized;\n\n /**\n * @dev Indicates that the contract is in the process of being initialized.\n */\n bool private _initializing;\n\n /**\n * @dev Triggered when the contract has been initialized or reinitialized.\n */\n event Initialized(uint8 version);\n\n /**\n * @dev A modifier that defines a protected initializer function that can be invoked at most once. In its scope,\n * `onlyInitializing` functions can be used to initialize parent contracts.\n *\n * Similar to `reinitializer(1)`, except that functions marked with `initializer` can be nested in the context of a\n * constructor.\n *\n * Emits an {Initialized} event.\n */\n modifier initializer() {\n bool isTopLevelCall = !_initializing;\n require(\n (isTopLevelCall && _initialized < 1) || (!AddressUpgradeable.isContract(address(this)) && _initialized == 1),\n \"Initializable: contract is already initialized\"\n );\n _initialized = 1;\n if (isTopLevelCall) {\n _initializing = true;\n }\n _;\n if (isTopLevelCall) {\n _initializing = false;\n emit Initialized(1);\n }\n }\n\n /**\n * @dev A modifier that defines a protected reinitializer function that can be invoked at most once, and only if the\n * contract hasn't been initialized to a greater version before. In its scope, `onlyInitializing` functions can be\n * used to initialize parent contracts.\n *\n * A reinitializer may be used after the original initialization step. This is essential to configure modules that\n * are added through upgrades and that require initialization.\n *\n * When `version` is 1, this modifier is similar to `initializer`, except that functions marked with `reinitializer`\n * cannot be nested. If one is invoked in the context of another, execution will revert.\n *\n * Note that versions can jump in increments greater than 1; this implies that if multiple reinitializers coexist in\n * a contract, executing them in the right order is up to the developer or operator.\n *\n * WARNING: setting the version to 255 will prevent any future reinitialization.\n *\n * Emits an {Initialized} event.\n */\n modifier reinitializer(uint8 version) {\n require(!_initializing && _initialized < version, \"Initializable: contract is already initialized\");\n _initialized = version;\n _initializing = true;\n _;\n _initializing = false;\n emit Initialized(version);\n }\n\n /**\n * @dev Modifier to protect an initialization function so that it can only be invoked by functions with the\n * {initializer} and {reinitializer} modifiers, directly or indirectly.\n */\n modifier onlyInitializing() {\n require(_initializing, \"Initializable: contract is not initializing\");\n _;\n }\n\n /**\n * @dev Locks the contract, preventing any future reinitialization. This cannot be part of an initializer call.\n * Calling this in the constructor of a contract will prevent that contract from being initialized or reinitialized\n * to any version. It is recommended to use this to lock implementation contracts that are designed to be called\n * through proxies.\n *\n * Emits an {Initialized} event the first time it is successfully executed.\n */\n function _disableInitializers() internal virtual {\n require(!_initializing, \"Initializable: contract is initializing\");\n if (_initialized != type(uint8).max) {\n _initialized = type(uint8).max;\n emit Initialized(type(uint8).max);\n }\n }\n\n /**\n * @dev Returns the highest version that has been initialized. See {reinitializer}.\n */\n function _getInitializedVersion() internal view returns (uint8) {\n return _initialized;\n }\n\n /**\n * @dev Returns `true` if the contract is currently initializing. See {onlyInitializing}.\n */\n function _isInitializing() internal view returns (bool) {\n return _initializing;\n }\n}\n"},{"file_path":"@openzeppelin/contracts-upgradeable/security/ReentrancyGuardUpgradeable.sol","source_code":"// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.9.0) (security/ReentrancyGuard.sol)\n\npragma solidity ^0.8.0;\nimport {Initializable} from \"../proxy/utils/Initializable.sol\";\n\n/**\n * @dev Contract module that helps prevent reentrant calls to a function.\n *\n * Inheriting from `ReentrancyGuard` will make the {nonReentrant} modifier\n * available, which can be applied to functions to make sure there are no nested\n * (reentrant) calls to them.\n *\n * Note that because there is a single `nonReentrant` guard, functions marked as\n * `nonReentrant` may not call one another. This can be worked around by making\n * those functions `private`, and then adding `external` `nonReentrant` entry\n * points to them.\n *\n * TIP: If you would like to learn more about reentrancy and alternative ways\n * to protect against it, check out our blog post\n * https://blog.openzeppelin.com/reentrancy-after-istanbul/[Reentrancy After Istanbul].\n */\nabstract contract ReentrancyGuardUpgradeable is Initializable {\n // Booleans are more expensive than uint256 or any type that takes up a full\n // word because each write operation emits an extra SLOAD to first read the\n // slot's contents, replace the bits taken up by the boolean, and then write\n // back. This is the compiler's defense against contract upgrades and\n // pointer aliasing, and it cannot be disabled.\n\n // The values being non-zero value makes deployment a bit more expensive,\n // but in exchange the refund on every call to nonReentrant will be lower in\n // amount. Since refunds are capped to a percentage of the total\n // transaction's gas, it is best to keep them low in cases like this one, to\n // increase the likelihood of the full refund coming into effect.\n uint256 private constant _NOT_ENTERED = 1;\n uint256 private constant _ENTERED = 2;\n\n uint256 private _status;\n\n function __ReentrancyGuard_init() internal onlyInitializing {\n __ReentrancyGuard_init_unchained();\n }\n\n function __ReentrancyGuard_init_unchained() internal onlyInitializing {\n _status = _NOT_ENTERED;\n }\n\n /**\n * @dev Prevents a contract from calling itself, directly or indirectly.\n * Calling a `nonReentrant` function from another `nonReentrant`\n * function is not supported. It is possible to prevent this from happening\n * by making the `nonReentrant` function external, and making it call a\n * `private` function that does the actual work.\n */\n modifier nonReentrant() {\n _nonReentrantBefore();\n _;\n _nonReentrantAfter();\n }\n\n function _nonReentrantBefore() private {\n // On the first call to nonReentrant, _status will be _NOT_ENTERED\n require(_status != _ENTERED, \"ReentrancyGuard: reentrant call\");\n\n // Any calls to nonReentrant after this point will fail\n _status = _ENTERED;\n }\n\n function _nonReentrantAfter() private {\n // By storing the original value once again, a refund is triggered (see\n // https://eips.ethereum.org/EIPS/eip-2200)\n _status = _NOT_ENTERED;\n }\n\n /**\n * @dev Returns true if the reentrancy guard is currently set to \"entered\", which indicates there is a\n * `nonReentrant` function in the call stack.\n */\n function _reentrancyGuardEntered() internal view returns (bool) {\n return _status == _ENTERED;\n }\n\n /**\n * @dev This empty reserved space is put in place to allow future versions to add new\n * variables without shifting down storage in the inheritance chain.\n * See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps\n */\n uint256[49] private __gap;\n}\n"},{"file_path":"@openzeppelin/contracts-upgradeable/token/ERC20/ERC20Upgradeable.sol","source_code":"// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.9.0) (token/ERC20/ERC20.sol)\n\npragma solidity ^0.8.0;\n\nimport \"./IERC20Upgradeable.sol\";\nimport \"./extensions/IERC20MetadataUpgradeable.sol\";\nimport \"../../utils/ContextUpgradeable.sol\";\nimport {Initializable} from \"../../proxy/utils/Initializable.sol\";\n\n/**\n * @dev Implementation of the {IERC20} interface.\n *\n * This implementation is agnostic to the way tokens are created. This means\n * that a supply mechanism has to be added in a derived contract using {_mint}.\n * For a generic mechanism see {ERC20PresetMinterPauser}.\n *\n * TIP: For a detailed writeup see our guide\n * https://forum.openzeppelin.com/t/how-to-implement-erc20-supply-mechanisms/226[How\n * to implement supply mechanisms].\n *\n * The default value of {decimals} is 18. To change this, you should override\n * this function so it returns a different value.\n *\n * We have followed general OpenZeppelin Contracts guidelines: functions revert\n * instead returning `false` on failure. This behavior is nonetheless\n * conventional and does not conflict with the expectations of ERC20\n * applications.\n *\n * Additionally, an {Approval} event is emitted on calls to {transferFrom}.\n * This allows applications to reconstruct the allowance for all accounts just\n * by listening to said events. Other implementations of the EIP may not emit\n * these events, as it isn't required by the specification.\n *\n * Finally, the non-standard {decreaseAllowance} and {increaseAllowance}\n * functions have been added to mitigate the well-known issues around setting\n * allowances. See {IERC20-approve}.\n */\ncontract ERC20Upgradeable is Initializable, ContextUpgradeable, IERC20Upgradeable, IERC20MetadataUpgradeable {\n mapping(address => uint256) private _balances;\n\n mapping(address => mapping(address => uint256)) private _allowances;\n\n uint256 private _totalSupply;\n\n string private _name;\n string private _symbol;\n\n /**\n * @dev Sets the values for {name} and {symbol}.\n *\n * All two of these values are immutable: they can only be set once during\n * construction.\n */\n function __ERC20_init(string memory name_, string memory symbol_) internal onlyInitializing {\n __ERC20_init_unchained(name_, symbol_);\n }\n\n function __ERC20_init_unchained(string memory name_, string memory symbol_) internal onlyInitializing {\n _name = name_;\n _symbol = symbol_;\n }\n\n /**\n * @dev Returns the name of the token.\n */\n function name() public view virtual override returns (string memory) {\n return _name;\n }\n\n /**\n * @dev Returns the symbol of the token, usually a shorter version of the\n * name.\n */\n function symbol() public view virtual override returns (string memory) {\n return _symbol;\n }\n\n /**\n * @dev Returns the number of decimals used to get its user representation.\n * For example, if `decimals` equals `2`, a balance of `505` tokens should\n * be displayed to a user as `5.05` (`505 / 10 ** 2`).\n *\n * Tokens usually opt for a value of 18, imitating the relationship between\n * Ether and Wei. This is the default value returned by this function, unless\n * it's overridden.\n *\n * NOTE: This information is only used for _display_ purposes: it in\n * no way affects any of the arithmetic of the contract, including\n * {IERC20-balanceOf} and {IERC20-transfer}.\n */\n function decimals() public view virtual override returns (uint8) {\n return 18;\n }\n\n /**\n * @dev See {IERC20-totalSupply}.\n */\n function totalSupply() public view virtual override returns (uint256) {\n return _totalSupply;\n }\n\n /**\n * @dev See {IERC20-balanceOf}.\n */\n function balanceOf(address account) public view virtual override returns (uint256) {\n return _balances[account];\n }\n\n /**\n * @dev See {IERC20-transfer}.\n *\n * Requirements:\n *\n * - `to` cannot be the zero address.\n * - the caller must have a balance of at least `amount`.\n */\n function transfer(address to, uint256 amount) public virtual override returns (bool) {\n address owner = _msgSender();\n _transfer(owner, to, amount);\n return true;\n }\n\n /**\n * @dev See {IERC20-allowance}.\n */\n function allowance(address owner, address spender) public view virtual override returns (uint256) {\n return _allowances[owner][spender];\n }\n\n /**\n * @dev See {IERC20-approve}.\n *\n * NOTE: If `amount` is the maximum `uint256`, the allowance is not updated on\n * `transferFrom`. This is semantically equivalent to an infinite approval.\n *\n * Requirements:\n *\n * - `spender` cannot be the zero address.\n */\n function approve(address spender, uint256 amount) public virtual override returns (bool) {\n address owner = _msgSender();\n _approve(owner, spender, amount);\n return true;\n }\n\n /**\n * @dev See {IERC20-transferFrom}.\n *\n * Emits an {Approval} event indicating the updated allowance. This is not\n * required by the EIP. See the note at the beginning of {ERC20}.\n *\n * NOTE: Does not update the allowance if the current allowance\n * is the maximum `uint256`.\n *\n * Requirements:\n *\n * - `from` and `to` cannot be the zero address.\n * - `from` must have a balance of at least `amount`.\n * - the caller must have allowance for ``from``'s tokens of at least\n * `amount`.\n */\n function transferFrom(address from, address to, uint256 amount) public virtual override returns (bool) {\n address spender = _msgSender();\n _spendAllowance(from, spender, amount);\n _transfer(from, to, amount);\n return true;\n }\n\n /**\n * @dev Atomically increases the allowance granted to `spender` by the caller.\n *\n * This is an alternative to {approve} that can be used as a mitigation for\n * problems described in {IERC20-approve}.\n *\n * Emits an {Approval} event indicating the updated allowance.\n *\n * Requirements:\n *\n * - `spender` cannot be the zero address.\n */\n function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {\n address owner = _msgSender();\n _approve(owner, spender, allowance(owner, spender) + addedValue);\n return true;\n }\n\n /**\n * @dev Atomically decreases the allowance granted to `spender` by the caller.\n *\n * This is an alternative to {approve} that can be used as a mitigation for\n * problems described in {IERC20-approve}.\n *\n * Emits an {Approval} event indicating the updated allowance.\n *\n * Requirements:\n *\n * - `spender` cannot be the zero address.\n * - `spender` must have allowance for the caller of at least\n * `subtractedValue`.\n */\n function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {\n address owner = _msgSender();\n uint256 currentAllowance = allowance(owner, spender);\n require(currentAllowance >= subtractedValue, \"ERC20: decreased allowance below zero\");\n unchecked {\n _approve(owner, spender, currentAllowance - subtractedValue);\n }\n\n return true;\n }\n\n /**\n * @dev Moves `amount` of tokens from `from` to `to`.\n *\n * This internal function is equivalent to {transfer}, and can be used to\n * e.g. implement automatic token fees, slashing mechanisms, etc.\n *\n * Emits a {Transfer} event.\n *\n * Requirements:\n *\n * - `from` cannot be the zero address.\n * - `to` cannot be the zero address.\n * - `from` must have a balance of at least `amount`.\n */\n function _transfer(address from, address to, uint256 amount) internal virtual {\n require(from != address(0), \"ERC20: transfer from the zero address\");\n require(to != address(0), \"ERC20: transfer to the zero address\");\n\n _beforeTokenTransfer(from, to, amount);\n\n uint256 fromBalance = _balances[from];\n require(fromBalance >= amount, \"ERC20: transfer amount exceeds balance\");\n unchecked {\n _balances[from] = fromBalance - amount;\n // Overflow not possible: the sum of all balances is capped by totalSupply, and the sum is preserved by\n // decrementing then incrementing.\n _balances[to] += amount;\n }\n\n emit Transfer(from, to, amount);\n\n _afterTokenTransfer(from, to, amount);\n }\n\n /** @dev Creates `amount` tokens and assigns them to `account`, increasing\n * the total supply.\n *\n * Emits a {Transfer} event with `from` set to the zero address.\n *\n * Requirements:\n *\n * - `account` cannot be the zero address.\n */\n function _mint(address account, uint256 amount) internal virtual {\n require(account != address(0), \"ERC20: mint to the zero address\");\n\n _beforeTokenTransfer(address(0), account, amount);\n\n _totalSupply += amount;\n unchecked {\n // Overflow not possible: balance + amount is at most totalSupply + amount, which is checked above.\n _balances[account] += amount;\n }\n emit Transfer(address(0), account, amount);\n\n _afterTokenTransfer(address(0), account, amount);\n }\n\n /**\n * @dev Destroys `amount` tokens from `account`, reducing the\n * total supply.\n *\n * Emits a {Transfer} event with `to` set to the zero address.\n *\n * Requirements:\n *\n * - `account` cannot be the zero address.\n * - `account` must have at least `amount` tokens.\n */\n function _burn(address account, uint256 amount) internal virtual {\n require(account != address(0), \"ERC20: burn from the zero address\");\n\n _beforeTokenTransfer(account, address(0), amount);\n\n uint256 accountBalance = _balances[account];\n require(accountBalance >= amount, \"ERC20: burn amount exceeds balance\");\n unchecked {\n _balances[account] = accountBalance - amount;\n // Overflow not possible: amount <= accountBalance <= totalSupply.\n _totalSupply -= amount;\n }\n\n emit Transfer(account, address(0), amount);\n\n _afterTokenTransfer(account, address(0), amount);\n }\n\n /**\n * @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens.\n *\n * This internal function is equivalent to `approve`, and can be used to\n * e.g. set automatic allowances for certain subsystems, etc.\n *\n * Emits an {Approval} event.\n *\n * Requirements:\n *\n * - `owner` cannot be the zero address.\n * - `spender` cannot be the zero address.\n */\n function _approve(address owner, address spender, uint256 amount) internal virtual {\n require(owner != address(0), \"ERC20: approve from the zero address\");\n require(spender != address(0), \"ERC20: approve to the zero address\");\n\n _allowances[owner][spender] = amount;\n emit Approval(owner, spender, amount);\n }\n\n /**\n * @dev Updates `owner` s allowance for `spender` based on spent `amount`.\n *\n * Does not update the allowance amount in case of infinite allowance.\n * Revert if not enough allowance is available.\n *\n * Might emit an {Approval} event.\n */\n function _spendAllowance(address owner, address spender, uint256 amount) internal virtual {\n uint256 currentAllowance = allowance(owner, spender);\n if (currentAllowance != type(uint256).max) {\n require(currentAllowance >= amount, \"ERC20: insufficient allowance\");\n unchecked {\n _approve(owner, spender, currentAllowance - amount);\n }\n }\n }\n\n /**\n * @dev Hook that is called before any transfer of tokens. This includes\n * minting and burning.\n *\n * Calling conditions:\n *\n * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens\n * will be transferred to `to`.\n * - when `from` is zero, `amount` tokens will be minted for `to`.\n * - when `to` is zero, `amount` of ``from``'s tokens will be burned.\n * - `from` and `to` are never both zero.\n *\n * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].\n */\n function _beforeTokenTransfer(address from, address to, uint256 amount) internal virtual {}\n\n /**\n * @dev Hook that is called after any transfer of tokens. This includes\n * minting and burning.\n *\n * Calling conditions:\n *\n * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens\n * has been transferred to `to`.\n * - when `from` is zero, `amount` tokens have been minted for `to`.\n * - when `to` is zero, `amount` of ``from``'s tokens have been burned.\n * - `from` and `to` are never both zero.\n *\n * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].\n */\n function _afterTokenTransfer(address from, address to, uint256 amount) internal virtual {}\n\n /**\n * @dev This empty reserved space is put in place to allow future versions to add new\n * variables without shifting down storage in the inheritance chain.\n * See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps\n */\n uint256[45] private __gap;\n}\n"},{"file_path":"@openzeppelin/contracts-upgradeable/token/ERC20/extensions/IERC20MetadataUpgradeable.sol","source_code":"// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (token/ERC20/extensions/IERC20Metadata.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../IERC20Upgradeable.sol\";\n\n/**\n * @dev Interface for the optional metadata functions from the ERC20 standard.\n *\n * _Available since v4.1._\n */\ninterface IERC20MetadataUpgradeable is IERC20Upgradeable {\n /**\n * @dev Returns the name of the token.\n */\n function name() external view returns (string memory);\n\n /**\n * @dev Returns the symbol of the token.\n */\n function symbol() external view returns (string memory);\n\n /**\n * @dev Returns the decimals places of the token.\n */\n function decimals() external view returns (uint8);\n}\n"},{"file_path":"@openzeppelin/contracts-upgradeable/token/ERC20/extensions/IERC20PermitUpgradeable.sol","source_code":"// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.9.4) (token/ERC20/extensions/IERC20Permit.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Interface of the ERC20 Permit extension allowing approvals to be made via signatures, as defined in\n * https://eips.ethereum.org/EIPS/eip-2612[EIP-2612].\n *\n * Adds the {permit} method, which can be used to change an account's ERC20 allowance (see {IERC20-allowance}) by\n * presenting a message signed by the account. By not relying on {IERC20-approve}, the token holder account doesn't\n * need to send a transaction, and thus is not required to hold Ether at all.\n *\n * ==== Security Considerations\n *\n * There are two important considerations concerning the use of `permit`. The first is that a valid permit signature\n * expresses an allowance, and it should not be assumed to convey additional meaning. In particular, it should not be\n * considered as an intention to spend the allowance in any specific way. The second is that because permits have\n * built-in replay protection and can be submitted by anyone, they can be frontrun. A protocol that uses permits should\n * take this into consideration and allow a `permit` call to fail. Combining these two aspects, a pattern that may be\n * generally recommended is:\n *\n * ```solidity\n * function doThingWithPermit(..., uint256 value, uint256 deadline, uint8 v, bytes32 r, bytes32 s) public {\n * try token.permit(msg.sender, address(this), value, deadline, v, r, s) {} catch {}\n * doThing(..., value);\n * }\n *\n * function doThing(..., uint256 value) public {\n * token.safeTransferFrom(msg.sender, address(this), value);\n * ...\n * }\n * ```\n *\n * Observe that: 1) `msg.sender` is used as the owner, leaving no ambiguity as to the signer intent, and 2) the use of\n * `try/catch` allows the permit to fail and makes the code tolerant to frontrunning. (See also\n * {SafeERC20-safeTransferFrom}).\n *\n * Additionally, note that smart contract wallets (such as Argent or Safe) are not able to produce permit signatures, so\n * contracts should have entry points that don't rely on permit.\n */\ninterface IERC20PermitUpgradeable {\n /**\n * @dev Sets `value` as the allowance of `spender` over ``owner``'s tokens,\n * given ``owner``'s signed approval.\n *\n * IMPORTANT: The same issues {IERC20-approve} has related to transaction\n * ordering also apply here.\n *\n * Emits an {Approval} event.\n *\n * Requirements:\n *\n * - `spender` cannot be the zero address.\n * - `deadline` must be a timestamp in the future.\n * - `v`, `r` and `s` must be a valid `secp256k1` signature from `owner`\n * over the EIP712-formatted function arguments.\n * - the signature must use ``owner``'s current nonce (see {nonces}).\n *\n * For more information on the signature format, see the\n * https://eips.ethereum.org/EIPS/eip-2612#specification[relevant EIP\n * section].\n *\n * CAUTION: See Security Considerations above.\n */\n function permit(\n address owner,\n address spender,\n uint256 value,\n uint256 deadline,\n uint8 v,\n bytes32 r,\n bytes32 s\n ) external;\n\n /**\n * @dev Returns the current nonce for `owner`. This value must be\n * included whenever a signature is generated for {permit}.\n *\n * Every successful call to {permit} increases ``owner``'s nonce by one. This\n * prevents a signature from being used multiple times.\n */\n function nonces(address owner) external view returns (uint256);\n\n /**\n * @dev Returns the domain separator used in the encoding of the signature for {permit}, as defined by {EIP712}.\n */\n // solhint-disable-next-line func-name-mixedcase\n function DOMAIN_SEPARATOR() external view returns (bytes32);\n}\n"},{"file_path":"@openzeppelin/contracts-upgradeable/token/ERC20/utils/SafeERC20Upgradeable.sol","source_code":"// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.9.3) (token/ERC20/utils/SafeERC20.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../IERC20Upgradeable.sol\";\nimport \"../extensions/IERC20PermitUpgradeable.sol\";\nimport \"../../../utils/AddressUpgradeable.sol\";\n\n/**\n * @title SafeERC20\n * @dev Wrappers around ERC20 operations that throw on failure (when the token\n * contract returns false). Tokens that return no value (and instead revert or\n * throw on failure) are also supported, non-reverting calls are assumed to be\n * successful.\n * To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract,\n * which allows you to call the safe operations as `token.safeTransfer(...)`, etc.\n */\nlibrary SafeERC20Upgradeable {\n using AddressUpgradeable for address;\n\n /**\n * @dev Transfer `value` amount of `token` from the calling contract to `to`. If `token` returns no value,\n * non-reverting calls are assumed to be successful.\n */\n function safeTransfer(IERC20Upgradeable token, address to, uint256 value) internal {\n _callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value));\n }\n\n /**\n * @dev Transfer `value` amount of `token` from `from` to `to`, spending the approval given by `from` to the\n * calling contract. If `token` returns no value, non-reverting calls are assumed to be successful.\n */\n function safeTransferFrom(IERC20Upgradeable token, address from, address to, uint256 value) internal {\n _callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value));\n }\n\n /**\n * @dev Deprecated. This function has issues similar to the ones found in\n * {IERC20-approve}, and its usage is discouraged.\n *\n * Whenever possible, use {safeIncreaseAllowance} and\n * {safeDecreaseAllowance} instead.\n */\n function safeApprove(IERC20Upgradeable token, address spender, uint256 value) internal {\n // safeApprove should only be called when setting an initial allowance,\n // or when resetting it to zero. To increase and decrease it, use\n // 'safeIncreaseAllowance' and 'safeDecreaseAllowance'\n require(\n (value == 0) || (token.allowance(address(this), spender) == 0),\n \"SafeERC20: approve from non-zero to non-zero allowance\"\n );\n _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value));\n }\n\n /**\n * @dev Increase the calling contract's allowance toward `spender` by `value`. If `token` returns no value,\n * non-reverting calls are assumed to be successful.\n */\n function safeIncreaseAllowance(IERC20Upgradeable token, address spender, uint256 value) internal {\n uint256 oldAllowance = token.allowance(address(this), spender);\n _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, oldAllowance + value));\n }\n\n /**\n * @dev Decrease the calling contract's allowance toward `spender` by `value`. If `token` returns no value,\n * non-reverting calls are assumed to be successful.\n */\n function safeDecreaseAllowance(IERC20Upgradeable token, address spender, uint256 value) internal {\n unchecked {\n uint256 oldAllowance = token.allowance(address(this), spender);\n require(oldAllowance >= value, \"SafeERC20: decreased allowance below zero\");\n _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, oldAllowance - value));\n }\n }\n\n /**\n * @dev Set the calling contract's allowance toward `spender` to `value`. If `token` returns no value,\n * non-reverting calls are assumed to be successful. Meant to be used with tokens that require the approval\n * to be set to zero before setting it to a non-zero value, such as USDT.\n */\n function forceApprove(IERC20Upgradeable token, address spender, uint256 value) internal {\n bytes memory approvalCall = abi.encodeWithSelector(token.approve.selector, spender, value);\n\n if (!_callOptionalReturnBool(token, approvalCall)) {\n _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, 0));\n _callOptionalReturn(token, approvalCall);\n }\n }\n\n /**\n * @dev Use a ERC-2612 signature to set the `owner` approval toward `spender` on `token`.\n * Revert on invalid signature.\n */\n function safePermit(\n IERC20PermitUpgradeable token,\n address owner,\n address spender,\n uint256 value,\n uint256 deadline,\n uint8 v,\n bytes32 r,\n bytes32 s\n ) internal {\n uint256 nonceBefore = token.nonces(owner);\n token.permit(owner, spender, value, deadline, v, r, s);\n uint256 nonceAfter = token.nonces(owner);\n require(nonceAfter == nonceBefore + 1, \"SafeERC20: permit did not succeed\");\n }\n\n /**\n * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement\n * on the return value: the return value is optional (but if data is returned, it must not be false).\n * @param token The token targeted by the call.\n * @param data The call data (encoded using abi.encode or one of its variants).\n */\n function _callOptionalReturn(IERC20Upgradeable token, bytes memory data) private {\n // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since\n // we're implementing it ourselves. We use {Address-functionCall} to perform this call, which verifies that\n // the target address contains contract code and also asserts for success in the low-level call.\n\n bytes memory returndata = address(token).functionCall(data, \"SafeERC20: low-level call failed\");\n require(returndata.length == 0 || abi.decode(returndata, (bool)), \"SafeERC20: ERC20 operation did not succeed\");\n }\n\n /**\n * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement\n * on the return value: the return value is optional (but if data is returned, it must not be false).\n * @param token The token targeted by the call.\n * @param data The call data (encoded using abi.encode or one of its variants).\n *\n * This is a variant of {_callOptionalReturn} that silents catches all reverts and returns a bool instead.\n */\n function _callOptionalReturnBool(IERC20Upgradeable token, bytes memory data) private returns (bool) {\n // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since\n // we're implementing it ourselves. We cannot use {Address-functionCall} here since this should return false\n // and not revert is the subcall reverts.\n\n (bool success, bytes memory returndata) = address(token).call(data);\n return\n success && (returndata.length == 0 || abi.decode(returndata, (bool))) && AddressUpgradeable.isContract(address(token));\n }\n}\n"},{"file_path":"@openzeppelin/contracts-upgradeable/utils/AddressUpgradeable.sol","source_code":"// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.9.0) (utils/Address.sol)\n\npragma solidity ^0.8.1;\n\n/**\n * @dev Collection of functions related to the address type\n */\nlibrary AddressUpgradeable {\n /**\n * @dev Returns true if `account` is a contract.\n *\n * [IMPORTANT]\n * ====\n * It is unsafe to assume that an address for which this function returns\n * false is an externally-owned account (EOA) and not a contract.\n *\n * Among others, `isContract` will return false for the following\n * types of addresses:\n *\n * - an externally-owned account\n * - a contract in construction\n * - an address where a contract will be created\n * - an address where a contract lived, but was destroyed\n *\n * Furthermore, `isContract` will also return true if the target contract within\n * the same transaction is already scheduled for destruction by `SELFDESTRUCT`,\n * which only has an effect at the end of a transaction.\n * ====\n *\n * [IMPORTANT]\n * ====\n * You shouldn't rely on `isContract` to protect against flash loan attacks!\n *\n * Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets\n * like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract\n * constructor.\n * ====\n */\n function isContract(address account) internal view returns (bool) {\n // This method relies on extcodesize/address.code.length, which returns 0\n // for contracts in construction, since the code is only stored at the end\n // of the constructor execution.\n\n return account.code.length > 0;\n }\n\n /**\n * @dev Replacement for Solidity's `transfer`: sends `amount` wei to\n * `recipient`, forwarding all available gas and reverting on errors.\n *\n * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost\n * of certain opcodes, possibly making contracts go over the 2300 gas limit\n * imposed by `transfer`, making them unable to receive funds via\n * `transfer`. {sendValue} removes this limitation.\n *\n * https://consensys.net/diligence/blog/2019/09/stop-using-soliditys-transfer-now/[Learn more].\n *\n * IMPORTANT: because control is transferred to `recipient`, care must be\n * taken to not create reentrancy vulnerabilities. Consider using\n * {ReentrancyGuard} or the\n * https://solidity.readthedocs.io/en/v0.8.0/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].\n */\n function sendValue(address payable recipient, uint256 amount) internal {\n require(address(this).balance >= amount, \"Address: insufficient balance\");\n\n (bool success, ) = recipient.call{value: amount}(\"\");\n require(success, \"Address: unable to send value, recipient may have reverted\");\n }\n\n /**\n * @dev Performs a Solidity function call using a low level `call`. A\n * plain `call` is an unsafe replacement for a function call: use this\n * function instead.\n *\n * If `target` reverts with a revert reason, it is bubbled up by this\n * function (like regular Solidity function calls).\n *\n * Returns the raw returned data. To convert to the expected return value,\n * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].\n *\n * Requirements:\n *\n * - `target` must be a contract.\n * - calling `target` with `data` must not revert.\n *\n * _Available since v3.1._\n */\n function functionCall(address target, bytes memory data) internal returns (bytes memory) {\n return functionCallWithValue(target, data, 0, \"Address: low-level call failed\");\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with\n * `errorMessage` as a fallback revert reason when `target` reverts.\n *\n * _Available since v3.1._\n */\n function functionCall(\n address target,\n bytes memory data,\n string memory errorMessage\n ) internal returns (bytes memory) {\n return functionCallWithValue(target, data, 0, errorMessage);\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],\n * but also transferring `value` wei to `target`.\n *\n * Requirements:\n *\n * - the calling contract must have an ETH balance of at least `value`.\n * - the called Solidity function must be `payable`.\n *\n * _Available since v3.1._\n */\n function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) {\n return functionCallWithValue(target, data, value, \"Address: low-level call with value failed\");\n }\n\n /**\n * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but\n * with `errorMessage` as a fallback revert reason when `target` reverts.\n *\n * _Available since v3.1._\n */\n function functionCallWithValue(\n address target,\n bytes memory data,\n uint256 value,\n string memory errorMessage\n ) internal returns (bytes memory) {\n require(address(this).balance >= value, \"Address: insufficient balance for call\");\n (bool success, bytes memory returndata) = target.call{value: value}(data);\n return verifyCallResultFromTarget(target, success, returndata, errorMessage);\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],\n * but performing a static call.\n *\n * _Available since v3.3._\n */\n function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {\n return functionStaticCall(target, data, \"Address: low-level static call failed\");\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],\n * but performing a static call.\n *\n * _Available since v3.3._\n */\n function functionStaticCall(\n address target,\n bytes memory data,\n string memory errorMessage\n ) internal view returns (bytes memory) {\n (bool success, bytes memory returndata) = target.staticcall(data);\n return verifyCallResultFromTarget(target, success, returndata, errorMessage);\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],\n * but performing a delegate call.\n *\n * _Available since v3.4._\n */\n function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {\n return functionDelegateCall(target, data, \"Address: low-level delegate call failed\");\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],\n * but performing a delegate call.\n *\n * _Available since v3.4._\n */\n function functionDelegateCall(\n address target,\n bytes memory data,\n string memory errorMessage\n ) internal returns (bytes memory) {\n (bool success, bytes memory returndata) = target.delegatecall(data);\n return verifyCallResultFromTarget(target, success, returndata, errorMessage);\n }\n\n /**\n * @dev Tool to verify that a low level call to smart-contract was successful, and revert (either by bubbling\n * the revert reason or using the provided one) in case of unsuccessful call or if target was not a contract.\n *\n * _Available since v4.8._\n */\n function verifyCallResultFromTarget(\n address target,\n bool success,\n bytes memory returndata,\n string memory errorMessage\n ) internal view returns (bytes memory) {\n if (success) {\n if (returndata.length == 0) {\n // only check isContract if the call was successful and the return data is empty\n // otherwise we already know that it was a contract\n require(isContract(target), \"Address: call to non-contract\");\n }\n return returndata;\n } else {\n _revert(returndata, errorMessage);\n }\n }\n\n /**\n * @dev Tool to verify that a low level call was successful, and revert if it wasn't, either by bubbling the\n * revert reason or using the provided one.\n *\n * _Available since v4.3._\n */\n function verifyCallResult(\n bool success,\n bytes memory returndata,\n string memory errorMessage\n ) internal pure returns (bytes memory) {\n if (success) {\n return returndata;\n } else {\n _revert(returndata, errorMessage);\n }\n }\n\n function _revert(bytes memory returndata, string memory errorMessage) private pure {\n // Look for revert reason and bubble it up if present\n if (returndata.length > 0) {\n // The easiest way to bubble the revert reason is using memory via assembly\n /// @solidity memory-safe-assembly\n assembly {\n let returndata_size := mload(returndata)\n revert(add(32, returndata), returndata_size)\n }\n } else {\n revert(errorMessage);\n }\n }\n}\n"},{"file_path":"@openzeppelin/contracts-upgradeable/token/ERC20/IERC20Upgradeable.sol","source_code":"// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.9.0) (token/ERC20/IERC20.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Interface of the ERC20 standard as defined in the EIP.\n */\ninterface IERC20Upgradeable {\n /**\n * @dev Emitted when `value` tokens are moved from one account (`from`) to\n * another (`to`).\n *\n * Note that `value` may be zero.\n */\n event Transfer(address indexed from, address indexed to, uint256 value);\n\n /**\n * @dev Emitted when the allowance of a `spender` for an `owner` is set by\n * a call to {approve}. `value` is the new allowance.\n */\n event Approval(address indexed owner, address indexed spender, uint256 value);\n\n /**\n * @dev Returns the amount of tokens in existence.\n */\n function totalSupply() external view returns (uint256);\n\n /**\n * @dev Returns the amount of tokens owned by `account`.\n */\n function balanceOf(address account) external view returns (uint256);\n\n /**\n * @dev Moves `amount` tokens from the caller's account to `to`.\n *\n * Returns a boolean value indicating whether the operation succeeded.\n *\n * Emits a {Transfer} event.\n */\n function transfer(address to, uint256 amount) external returns (bool);\n\n /**\n * @dev Returns the remaining number of tokens that `spender` will be\n * allowed to spend on behalf of `owner` through {transferFrom}. This is\n * zero by default.\n *\n * This value changes when {approve} or {transferFrom} are called.\n */\n function allowance(address owner, address spender) external view returns (uint256);\n\n /**\n * @dev Sets `amount` as the allowance of `spender` over the caller's tokens.\n *\n * Returns a boolean value indicating whether the operation succeeded.\n *\n * IMPORTANT: Beware that changing an allowance with this method brings the risk\n * that someone may use both the old and the new allowance by unfortunate\n * transaction ordering. One possible solution to mitigate this race\n * condition is to first reduce the spender's allowance to 0 and set the\n * desired value afterwards:\n * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729\n *\n * Emits an {Approval} event.\n */\n function approve(address spender, uint256 amount) external returns (bool);\n\n /**\n * @dev Moves `amount` tokens from `from` to `to` using the\n * allowance mechanism. `amount` is then deducted from the caller's\n * allowance.\n *\n * Returns a boolean value indicating whether the operation succeeded.\n *\n * Emits a {Transfer} event.\n */\n function transferFrom(address from, address to, uint256 amount) external returns (bool);\n}\n"},{"file_path":"@openzeppelin/contracts-upgradeable/access/OwnableUpgradeable.sol","source_code":"// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.9.0) (access/Ownable.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../utils/ContextUpgradeable.sol\";\nimport {Initializable} from \"../proxy/utils/Initializable.sol\";\n\n/**\n * @dev Contract module which provides a basic access control mechanism, where\n * there is an account (an owner) that can be granted exclusive access to\n * specific functions.\n *\n * By default, the owner account will be the one that deploys the contract. This\n * can later be changed with {transferOwnership}.\n *\n * This module is used through inheritance. It will make available the modifier\n * `onlyOwner`, which can be applied to your functions to restrict their use to\n * the owner.\n */\nabstract contract OwnableUpgradeable is Initializable, ContextUpgradeable {\n address private _owner;\n\n event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);\n\n /**\n * @dev Initializes the contract setting the deployer as the initial owner.\n */\n function __Ownable_init() internal onlyInitializing {\n __Ownable_init_unchained();\n }\n\n function __Ownable_init_unchained() internal onlyInitializing {\n _transferOwnership(_msgSender());\n }\n\n /**\n * @dev Throws if called by any account other than the owner.\n */\n modifier onlyOwner() {\n _checkOwner();\n _;\n }\n\n /**\n * @dev Returns the address of the current owner.\n */\n function owner() public view virtual returns (address) {\n return _owner;\n }\n\n /**\n * @dev Throws if the sender is not the owner.\n */\n function _checkOwner() internal view virtual {\n require(owner() == _msgSender(), \"Ownable: caller is not the owner\");\n }\n\n /**\n * @dev Leaves the contract without owner. It will not be possible to call\n * `onlyOwner` functions. Can only be called by the current owner.\n *\n * NOTE: Renouncing ownership will leave the contract without an owner,\n * thereby disabling any functionality that is only available to the owner.\n */\n function renounceOwnership() public virtual onlyOwner {\n _transferOwnership(address(0));\n }\n\n /**\n * @dev Transfers ownership of the contract to a new account (`newOwner`).\n * Can only be called by the current owner.\n */\n function transferOwnership(address newOwner) public virtual onlyOwner {\n require(newOwner != address(0), \"Ownable: new owner is the zero address\");\n _transferOwnership(newOwner);\n }\n\n /**\n * @dev Transfers ownership of the contract to a new account (`newOwner`).\n * Internal function without access restriction.\n */\n function _transferOwnership(address newOwner) internal virtual {\n address oldOwner = _owner;\n _owner = newOwner;\n emit OwnershipTransferred(oldOwner, newOwner);\n }\n\n /**\n * @dev This empty reserved space is put in place to allow future versions to add new\n * variables without shifting down storage in the inheritance chain.\n * See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps\n */\n uint256[49] private __gap;\n}\n"},{"file_path":"@openzeppelin/contracts-upgradeable/utils/ContextUpgradeable.sol","source_code":"// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.9.4) (utils/Context.sol)\n\npragma solidity ^0.8.0;\nimport {Initializable} from \"../proxy/utils/Initializable.sol\";\n\n/**\n * @dev Provides information about the current execution context, including the\n * sender of the transaction and its data. While these are generally available\n * via msg.sender and msg.data, they should not be accessed in such a direct\n * manner, since when dealing with meta-transactions the account sending and\n * paying for execution may not be the actual sender (as far as an application\n * is concerned).\n *\n * This contract is only required for intermediate, library-like contracts.\n */\nabstract contract ContextUpgradeable is Initializable {\n function __Context_init() internal onlyInitializing {\n }\n\n function __Context_init_unchained() internal onlyInitializing {\n }\n function _msgSender() internal view virtual returns (address) {\n return msg.sender;\n }\n\n function _msgData() internal view virtual returns (bytes calldata) {\n return msg.data;\n }\n\n function _contextSuffixLength() internal view virtual returns (uint256) {\n return 0;\n }\n\n /**\n * @dev This empty reserved space is put in place to allow future versions to add new\n * variables without shifting down storage in the inheritance chain.\n * See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps\n */\n uint256[50] private __gap;\n}\n"},{"file_path":"@uniswap/v2-periphery/contracts/interfaces/IUniswapV2Router01.sol","source_code":"pragma solidity >=0.6.2;\n\ninterface IUniswapV2Router01 {\n function factory() external pure returns (address);\n function WETH() external pure returns (address);\n\n function addLiquidity(\n address tokenA,\n address tokenB,\n uint amountADesired,\n uint amountBDesired,\n uint amountAMin,\n uint amountBMin,\n address to,\n uint deadline\n ) external returns (uint amountA, uint amountB, uint liquidity);\n function addLiquidityETH(\n address token,\n uint amountTokenDesired,\n uint amountTokenMin,\n uint amountETHMin,\n address to,\n uint deadline\n ) external payable returns (uint amountToken, uint amountETH, uint liquidity);\n function removeLiquidity(\n address tokenA,\n address tokenB,\n uint liquidity,\n uint amountAMin,\n uint amountBMin,\n address to,\n uint deadline\n ) external returns (uint amountA, uint amountB);\n function removeLiquidityETH(\n address token,\n uint liquidity,\n uint amountTokenMin,\n uint amountETHMin,\n address to,\n uint deadline\n ) external returns (uint amountToken, uint amountETH);\n function removeLiquidityWithPermit(\n address tokenA,\n address tokenB,\n uint liquidity,\n uint amountAMin,\n uint amountBMin,\n address to,\n uint deadline,\n bool approveMax, uint8 v, bytes32 r, bytes32 s\n ) external returns (uint amountA, uint amountB);\n function removeLiquidityETHWithPermit(\n address token,\n uint liquidity,\n uint amountTokenMin,\n uint amountETHMin,\n address to,\n uint deadline,\n bool approveMax, uint8 v, bytes32 r, bytes32 s\n ) external returns (uint amountToken, uint amountETH);\n function swapExactTokensForTokens(\n uint amountIn,\n uint amountOutMin,\n address[] calldata path,\n address to,\n uint deadline\n ) external returns (uint[] memory amounts);\n function swapTokensForExactTokens(\n uint amountOut,\n uint amountInMax,\n address[] calldata path,\n address to,\n uint deadline\n ) external returns (uint[] memory amounts);\n function swapExactETHForTokens(uint amountOutMin, address[] calldata path, address to, uint deadline)\n external\n payable\n returns (uint[] memory amounts);\n function swapTokensForExactETH(uint amountOut, uint amountInMax, address[] calldata path, address to, uint deadline)\n external\n returns (uint[] memory amounts);\n function swapExactTokensForETH(uint amountIn, uint amountOutMin, address[] calldata path, address to, uint deadline)\n external\n returns (uint[] memory amounts);\n function swapETHForExactTokens(uint amountOut, address[] calldata path, address to, uint deadline)\n external\n payable\n returns (uint[] memory amounts);\n\n function quote(uint amountA, uint reserveA, uint reserveB) external pure returns (uint amountB);\n function getAmountOut(uint amountIn, uint reserveIn, uint reserveOut) external pure returns (uint amountOut);\n function getAmountIn(uint amountOut, uint reserveIn, uint reserveOut) external pure returns (uint amountIn);\n function getAmountsOut(uint amountIn, address[] calldata path) external view returns (uint[] memory amounts);\n function getAmountsIn(uint amountOut, address[] calldata path) external view returns (uint[] memory amounts);\n}\n"},{"file_path":"@uniswap/v2-periphery/contracts/interfaces/IUniswapV2Router02.sol","source_code":"pragma solidity >=0.6.2;\n\nimport './IUniswapV2Router01.sol';\n\ninterface IUniswapV2Router02 is IUniswapV2Router01 {\n function removeLiquidityETHSupportingFeeOnTransferTokens(\n address token,\n uint liquidity,\n uint amountTokenMin,\n uint amountETHMin,\n address to,\n uint deadline\n ) external returns (uint amountETH);\n function removeLiquidityETHWithPermitSupportingFeeOnTransferTokens(\n address token,\n uint liquidity,\n uint amountTokenMin,\n uint amountETHMin,\n address to,\n uint deadline,\n bool approveMax, uint8 v, bytes32 r, bytes32 s\n ) external returns (uint amountETH);\n\n function swapExactTokensForTokensSupportingFeeOnTransferTokens(\n uint amountIn,\n uint amountOutMin,\n address[] calldata path,\n address to,\n uint deadline\n ) external;\n function swapExactETHForTokensSupportingFeeOnTransferTokens(\n uint amountOutMin,\n address[] calldata path,\n address to,\n uint deadline\n ) external payable;\n function swapExactTokensForETHSupportingFeeOnTransferTokens(\n uint amountIn,\n uint amountOutMin,\n address[] calldata path,\n address to,\n uint deadline\n ) external;\n}\n"},{"file_path":"contracts/interfaces/IERC20Detailed.sol","source_code":"// SPDX-License-Identifier: Apache-2.0\npragma solidity 0.8.10;\n\nimport \"@openzeppelin/contracts-upgradeable/token/ERC20/IERC20Upgradeable.sol\";\n\ninterface IERC20Detailed is IERC20Upgradeable {\n function name() external view returns(string memory);\n function symbol() external view returns(string memory);\n function decimals() external view returns(uint256);\n}\n"},{"file_path":"contracts/interfaces/IIdleCDOStrategy.sol","source_code":"// SPDX-License-Identifier: Apache-2.0\npragma solidity 0.8.10;\n\ninterface IIdleCDOStrategy {\n function strategyToken() external view returns(address);\n function token() external view returns(address);\n function tokenDecimals() external view returns(uint256);\n function oneToken() external view returns(uint256);\n function redeemRewards(bytes calldata _extraData) external returns(uint256[] memory);\n function pullStkAAVE() external returns(uint256);\n function price() external view returns(uint256);\n function getRewardTokens() external view returns(address[] memory);\n function deposit(uint256 _amount) external returns(uint256);\n // _amount in `strategyToken`\n function redeem(uint256 _amount) external returns(uint256);\n // _amount in `token`\n function redeemUnderlying(uint256 _amount) external returns(uint256);\n function getApr() external view 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