{"file_path":"project/contracts/core/FxUSDRegeneracy.sol","creation_status":"success","source_code":"// SPDX-License-Identifier: MIT\n\npragma solidity ^0.8.26;\n\nimport { AccessControlUpgradeable } from \"@openzeppelin/contracts-upgradeable-v4/access/AccessControlUpgradeable.sol\";\nimport { ERC20PermitUpgradeable } from \"@openzeppelin/contracts-upgradeable-v4/token/ERC20/extensions/ERC20PermitUpgradeable.sol\";\nimport { SafeERC20Upgradeable } from \"@openzeppelin/contracts-upgradeable-v4/token/ERC20/utils/SafeERC20Upgradeable.sol\";\nimport { IERC20Upgradeable } from \"@openzeppelin/contracts-upgradeable-v4/token/ERC20/IERC20Upgradeable.sol\";\nimport { EnumerableSetUpgradeable } from \"@openzeppelin/contracts-upgradeable-v4/utils/structs/EnumerableSetUpgradeable.sol\";\n\nimport { IFxFractionalTokenV2 } from \"../v2/interfaces/IFxFractionalTokenV2.sol\";\nimport { IFxMarketV2 } from \"../v2/interfaces/IFxMarketV2.sol\";\nimport { IFxTreasuryV2 } from \"../v2/interfaces/IFxTreasuryV2.sol\";\nimport { IFxUSD } from \"../v2/interfaces/IFxUSD.sol\";\nimport { IFxShareableRebalancePool } from \"../v2/interfaces/IFxShareableRebalancePool.sol\";\nimport { IFxUSDRegeneracy } from \"../interfaces/IFxUSDRegeneracy.sol\";\nimport { IPegKeeper } from \"../interfaces/IPegKeeper.sol\";\n\nimport { Math } from \"../libraries/Math.sol\";\n\n/// @dev It has the same storage layout with `https://github.com/AladdinDAO/aladdin-v3-contracts/contracts/f(x)/v2/FxUSD.sol`.\ncontract FxUSDRegeneracy is AccessControlUpgradeable, ERC20PermitUpgradeable, IFxUSD, IFxUSDRegeneracy {\n  using SafeERC20Upgradeable for IERC20Upgradeable;\n  using EnumerableSetUpgradeable for EnumerableSetUpgradeable.AddressSet;\n\n  /**********\n   * Errors *\n   **********/\n\n  error ErrorCallerNotPoolManager();\n\n  error ErrorCallerNotPegKeeper();\n\n  error ErrorExceedStableReserve();\n\n  error ErrorInsufficientOutput();\n\n  error ErrorInsufficientBuyBack();\n\n  /*************\n   * Constants *\n   *************/\n\n  /// @notice The role for migrator.\n  bytes32 public constant MIGRATOR_ROLE = keccak256(\"MIGRATOR_ROLE\");\n\n  /// @dev The precision used to compute nav.\n  uint256 private constant PRECISION = 1e18;\n\n  /***********\n   * Structs *\n   ***********/\n\n  /// @param fToken The address of Fractional Token.\n  /// @param treasury The address of treasury contract.\n  /// @param market The address of market contract.\n  /// @param mintCap The maximum amount of fToken can be minted.\n  /// @param managed The amount of fToken managed in this contract.\n  struct FxMarketStruct {\n    address fToken;\n    address treasury;\n    address market;\n    uint256 mintCap;\n    uint256 managed;\n  }\n\n  /// @dev The struct for stable token reserve.\n  /// @param owned The number of stable coins owned in this contract.\n  /// @param managed The amount of fxUSD managed under this stable coin.\n  /// @param enabled Whether this stable coin is enabled, currently always true\n  /// @param decimals The decimal for the stable coin.\n  /// @param reserved Reserved slots for future usage.\n  struct StableReserveStruct {\n    uint96 owned;\n    uint96 managed;\n    uint8 decimals;\n  }\n\n  /***********************\n   * Immutable Variables *\n   ***********************/\n\n  /// @inheritdoc IFxUSDRegeneracy\n  address public immutable poolManager;\n\n  /// @inheritdoc IFxUSDRegeneracy\n  address public immutable stableToken;\n\n  /// @inheritdoc IFxUSDRegeneracy\n  address public immutable pegKeeper;\n\n  /*********************\n   * Storage Variables *\n   *********************/\n\n  /// @notice Mapping from base token address to metadata.\n  mapping(address => FxMarketStruct) public markets;\n\n  /// @dev The list of supported base tokens.\n  EnumerableSetUpgradeable.AddressSet private supportedTokens;\n\n  /// @dev The list of supported rebalance pools.\n  EnumerableSetUpgradeable.AddressSet private supportedPools;\n\n  /// @notice The total supply for legacy 2.0 pools.\n  uint256 public legacyTotalSupply;\n\n  /// @notice The reserve struct for stable token.\n  StableReserveStruct public stableReserve;\n\n  /*************\n   * Modifiers *\n   *************/\n\n  modifier onlySupportedMarket(address _baseToken) {\n    _checkBaseToken(_baseToken);\n    _;\n  }\n\n  modifier onlySupportedPool(address _pool) {\n    if (!supportedPools.contains(_pool)) revert ErrorUnsupportedRebalancePool();\n    _;\n  }\n\n  modifier onlyMintableMarket(address _baseToken, bool isMint) {\n    _checkMarketMintable(_baseToken, isMint);\n    _;\n  }\n\n  modifier onlyPoolManager() {\n    if (_msgSender() != poolManager) revert ErrorCallerNotPoolManager();\n    _;\n  }\n\n  modifier onlyPegKeeper() {\n    if (_msgSender() != pegKeeper) revert ErrorCallerNotPegKeeper();\n    _;\n  }\n\n  /***************\n   * Constructor *\n   ***************/\n\n  constructor(address _poolManager, address _stableToken, address _pegKeeper) {\n    poolManager = _poolManager;\n    stableToken = _stableToken;\n    pegKeeper = _pegKeeper;\n  }\n\n  function initialize(string memory _name, string memory _symbol) external initializer {\n    __Context_init();\n    __ERC165_init();\n    __AccessControl_init();\n    __ERC20_init(_name, _symbol);\n    __ERC20Permit_init(_name);\n\n    _grantRole(DEFAULT_ADMIN_ROLE, _msgSender());\n  }\n\n  function initializeV2() external reinitializer(2) {\n    stableReserve.decimals = FxUSDRegeneracy(stableToken).decimals();\n    legacyTotalSupply = totalSupply();\n  }\n\n  /*************************\n   * Public View Functions *\n   *************************/\n\n  /// @inheritdoc IFxUSD\n  function getMarkets() external view override returns (address[] memory _tokens) {\n    uint256 _numMarkets = supportedTokens.length();\n    _tokens = new address[](_numMarkets);\n    for (uint256 i = 0; i < _numMarkets; ++i) {\n      _tokens[i] = supportedTokens.at(i);\n    }\n  }\n\n  /// @inheritdoc IFxUSD\n  function getRebalancePools() external view override returns (address[] memory _pools) {\n    uint256 _numPools = supportedPools.length();\n    _pools = new address[](_numPools);\n    for (uint256 i = 0; i < _numPools; ++i) {\n      _pools[i] = supportedPools.at(i);\n    }\n  }\n\n  /// @inheritdoc IFxUSD\n  function nav() external view override returns (uint256 _nav) {\n    uint256 _numMarkets = supportedTokens.length();\n    uint256 _supply = legacyTotalSupply;\n    if (_supply == 0) return PRECISION;\n\n    for (uint256 i = 0; i < _numMarkets; i++) {\n      address _baseToken = supportedTokens.at(i);\n      address _fToken = markets[_baseToken].fToken;\n      uint256 _fnav = IFxFractionalTokenV2(_fToken).nav();\n      _nav += _fnav * markets[_baseToken].managed;\n    }\n    _nav /= _supply;\n  }\n\n  /// @inheritdoc IFxUSD\n  function isUnderCollateral() public view override returns (bool) {\n    uint256 _numMarkets = supportedTokens.length();\n    for (uint256 i = 0; i < _numMarkets; i++) {\n      address _baseToken = supportedTokens.at(i);\n      address _treasury = markets[_baseToken].treasury;\n      if (IFxTreasuryV2(_treasury).isUnderCollateral()) return true;\n    }\n    return false;\n  }\n\n  /****************************\n   * Public Mutated Functions *\n   ****************************/\n\n  /// @inheritdoc IFxUSD\n  function wrap(\n    address _baseToken,\n    uint256 _amount,\n    address _receiver\n  ) external override onlySupportedMarket(_baseToken) onlyMintableMarket(_baseToken, false) {\n    if (isUnderCollateral()) revert ErrorUnderCollateral();\n\n    address _fToken = markets[_baseToken].fToken;\n    IERC20Upgradeable(_fToken).safeTransferFrom(_msgSender(), address(this), _amount);\n\n    _mintShares(_baseToken, _receiver, _amount);\n\n    emit Wrap(_baseToken, _msgSender(), _receiver, _amount);\n  }\n\n  /// @inheritdoc IFxUSD\n  function unwrap(\n    address _baseToken,\n    uint256 _amount,\n    address _receiver\n  ) external onlyRole(MIGRATOR_ROLE) onlySupportedMarket(_baseToken) {\n    if (isUnderCollateral()) revert ErrorUnderCollateral();\n\n    _burnShares(_baseToken, _msgSender(), _amount);\n\n    address _fToken = markets[_baseToken].fToken;\n    IERC20Upgradeable(_fToken).safeTransfer(_receiver, _amount);\n\n    emit Unwrap(_baseToken, _msgSender(), _receiver, _amount);\n  }\n\n  /// @inheritdoc IFxUSD\n  function wrapFrom(address _pool, uint256 _amount, address _receiver) external override onlySupportedPool(_pool) {\n    if (isUnderCollateral()) revert ErrorUnderCollateral();\n\n    address _baseToken = IFxShareableRebalancePool(_pool).baseToken();\n    _checkBaseToken(_baseToken);\n    _checkMarketMintable(_baseToken, false);\n\n    address _fToken = markets[_baseToken].fToken;\n    uint256 _balance = IERC20Upgradeable(_fToken).balanceOf(address(this));\n    IFxShareableRebalancePool(_pool).withdrawFrom(_msgSender(), _amount, address(this));\n    _amount = IERC20Upgradeable(_fToken).balanceOf(address(this)) - _balance;\n    _mintShares(_baseToken, _receiver, _amount);\n\n    emit Wrap(_baseToken, _msgSender(), _receiver, _amount);\n  }\n\n  /// @inheritdoc IFxUSD\n  function mint(address, uint256, address, uint256) external virtual override returns (uint256) {\n    revert(\"mint paused\");\n  }\n\n  /// @inheritdoc IFxUSD\n  function earn(address, uint256, address) external virtual override {\n    revert(\"earn paused\");\n  }\n\n  /// @inheritdoc IFxUSD\n  function mintAndEarn(address, uint256, address, uint256) external virtual override returns (uint256) {\n    revert(\"mint and earn paused\");\n  }\n\n  /// @inheritdoc IFxUSD\n  function redeem(\n    address _baseToken,\n    uint256 _amountIn,\n    address _receiver,\n    uint256 _minOut\n  ) external override onlySupportedMarket(_baseToken) returns (uint256 _amountOut, uint256 _bonusOut) {\n    if (isUnderCollateral()) revert ErrorUnderCollateral();\n\n    address _market = markets[_baseToken].market;\n    address _fToken = markets[_baseToken].fToken;\n\n    uint256 _balance = IERC20Upgradeable(_fToken).balanceOf(address(this));\n    (_amountOut, _bonusOut) = IFxMarketV2(_market).redeemFToken(_amountIn, _receiver, _minOut);\n    // the real amount of fToken redeemed\n    _amountIn = _balance - IERC20Upgradeable(_fToken).balanceOf(address(this));\n\n    _burnShares(_baseToken, _msgSender(), _amountIn);\n    emit Unwrap(_baseToken, _msgSender(), _receiver, _amountIn);\n  }\n\n  /// @inheritdoc IFxUSD\n  function redeemFrom(\n    address _pool,\n    uint256 _amountIn,\n    address _receiver,\n    uint256 _minOut\n  ) external override onlySupportedPool(_pool) returns (uint256 _amountOut, uint256 _bonusOut) {\n    address _baseToken = IFxShareableRebalancePool(_pool).baseToken();\n    address _market = markets[_baseToken].market;\n    address _fToken = markets[_baseToken].fToken;\n\n    // calculate the actual amount of fToken withdrawn from rebalance pool.\n    _amountOut = IERC20Upgradeable(_fToken).balanceOf(address(this));\n    IFxShareableRebalancePool(_pool).withdrawFrom(_msgSender(), _amountIn, address(this));\n    _amountOut = IERC20Upgradeable(_fToken).balanceOf(address(this)) - _amountOut;\n\n    // redeem fToken as base token\n    // assume all fToken will be redeem for simplicity\n    (_amountOut, _bonusOut) = IFxMarketV2(_market).redeemFToken(_amountOut, _receiver, _minOut);\n  }\n\n  /// @inheritdoc IFxUSD\n  function autoRedeem(\n    uint256 _amountIn,\n    address _receiver,\n    uint256[] memory _minOuts\n  )\n    external\n    override\n    returns (address[] memory _baseTokens, uint256[] memory _amountOuts, uint256[] memory _bonusOuts)\n  {\n    uint256 _numMarkets = supportedTokens.length();\n    if (_minOuts.length != _numMarkets) revert ErrorLengthMismatch();\n\n    _baseTokens = new address[](_numMarkets);\n    _amountOuts = new uint256[](_numMarkets);\n    _bonusOuts = new uint256[](_numMarkets);\n    uint256[] memory _supplies = new uint256[](_numMarkets);\n\n    bool _isUnderCollateral = false;\n    for (uint256 i = 0; i < _numMarkets; i++) {\n      _baseTokens[i] = supportedTokens.at(i);\n      _supplies[i] = markets[_baseTokens[i]].managed;\n      address _treasury = markets[_baseTokens[i]].treasury;\n      if (IFxTreasuryV2(_treasury).isUnderCollateral()) _isUnderCollateral = true;\n    }\n\n    uint256 _supply = legacyTotalSupply;\n    if (_amountIn > _supply) revert(\"redeem exceed supply\");\n    unchecked {\n      legacyTotalSupply = _supply - _amountIn;\n    }\n    _burn(_msgSender(), _amountIn);\n\n    if (_isUnderCollateral) {\n      // redeem proportionally\n      for (uint256 i = 0; i < _numMarkets; i++) {\n        _amountOuts[i] = (_supplies[i] * _amountIn) / _supply;\n      }\n    } else {\n      // redeem by sorted fToken amounts\n      while (_amountIn > 0) {\n        unchecked {\n          uint256 maxSupply = _supplies[0];\n          uint256 maxIndex = 0;\n          for (uint256 i = 1; i < _numMarkets; i++) {\n            if (_supplies[i] > maxSupply) {\n              maxSupply = _supplies[i];\n              maxIndex = i;\n            }\n          }\n          if (_amountIn > maxSupply) _amountOuts[maxIndex] = maxSupply;\n          else _amountOuts[maxIndex] = _amountIn;\n          _supplies[maxIndex] -= _amountOuts[maxIndex];\n          _amountIn -= _amountOuts[maxIndex];\n        }\n      }\n    }\n\n    for (uint256 i = 0; i < _numMarkets; i++) {\n      if (_amountOuts[i] == 0) continue;\n      emit Unwrap(_baseTokens[i], _msgSender(), _receiver, _amountOuts[i]);\n\n      markets[_baseTokens[i]].managed -= _amountOuts[i];\n      address _market = markets[_baseTokens[i]].market;\n      (_amountOuts[i], _bonusOuts[i]) = IFxMarketV2(_market).redeemFToken(_amountOuts[i], _receiver, _minOuts[i]);\n    }\n  }\n\n  /// @inheritdoc IFxUSDRegeneracy\n  function mint(address to, uint256 amount) external onlyPoolManager {\n    _mint(to, amount);\n  }\n\n  /// @inheritdoc IFxUSDRegeneracy\n  function burn(address from, uint256 amount) external onlyPoolManager {\n    _burn(from, amount);\n  }\n\n  /// @inheritdoc IFxUSDRegeneracy\n  function onRebalanceWithStable(uint256 amountStableToken, uint256 amountFxUSD) external onlyPoolManager {\n    stableReserve.owned += uint96(amountStableToken);\n    stableReserve.managed += uint96(amountFxUSD);\n\n    emit RebalanceWithStable(amountStableToken, amountFxUSD);\n  }\n\n  /// @inheritdoc IFxUSDRegeneracy\n  function buyback(\n    uint256 amountIn,\n    address receiver,\n    bytes calldata data\n  ) external onlyPegKeeper returns (uint256 amountOut, uint256 bonusOut) {\n    StableReserveStruct memory cachedStableReserve = stableReserve;\n    if (amountIn > cachedStableReserve.owned) revert ErrorExceedStableReserve();\n\n    // rounding up\n    uint256 expectedFxUSD = Math.mulDivUp(amountIn, cachedStableReserve.managed, cachedStableReserve.owned);\n\n    // convert USDC to fxUSD\n    IERC20Upgradeable(stableToken).safeTransfer(pegKeeper, amountIn);\n    uint256 actualOut = balanceOf(address(this));\n    amountOut = IPegKeeper(pegKeeper).onSwap(stableToken, address(this), amountIn, data);\n    actualOut = balanceOf(address(this)) - actualOut;\n\n    // check actual fxUSD swapped in case peg keeper is hacked.\n    if (amountOut > actualOut) revert ErrorInsufficientOutput();\n\n    // check fxUSD swapped can cover debts\n    if (amountOut < expectedFxUSD) revert ErrorInsufficientBuyBack();\n    bonusOut = amountOut - expectedFxUSD;\n\n    _burn(address(this), expectedFxUSD);\n    unchecked {\n      cachedStableReserve.owned -= uint96(amountIn);\n      if (cachedStableReserve.managed > expectedFxUSD) {\n        cachedStableReserve.managed -= uint96(expectedFxUSD);\n      } else {\n        cachedStableReserve.managed = 0;\n      }\n      stableReserve = cachedStableReserve;\n    }\n\n    if (bonusOut > 0) {\n      _transfer(address(this), receiver, bonusOut);\n    }\n\n    emit Buyback(amountIn, amountOut, bonusOut);\n  }\n\n  /**********************\n   * Internal Functions *\n   **********************/\n\n  /// @dev Internal function to check base token.\n  /// @param _baseToken The address of the base token.\n  function _checkBaseToken(address _baseToken) private view {\n    if (!supportedTokens.contains(_baseToken)) revert ErrorUnsupportedMarket();\n  }\n\n  /// @dev Internal function to check market.\n  /// @param _baseToken The address of the base token.\n  /// @param _checkCollateralRatio Whether to check collateral ratio.\n  function _checkMarketMintable(address _baseToken, bool _checkCollateralRatio) private view {\n    address _treasury = markets[_baseToken].treasury;\n    if (_checkCollateralRatio) {\n      uint256 _collateralRatio = IFxTreasuryV2(_treasury).collateralRatio();\n      uint256 _stabilityRatio = IFxMarketV2(markets[_baseToken].market).stabilityRatio();\n      // not allow to mint when collateral ratio <= stability ratio\n      if (_collateralRatio <= _stabilityRatio) revert ErrorMarketInStabilityMode();\n    }\n    // not allow to mint when price is invalid\n    if (!IFxTreasuryV2(_treasury).isBaseTokenPriceValid()) revert ErrorMarketWithInvalidPrice();\n  }\n\n  /// @dev Internal function to mint fxUSD.\n  /// @param _baseToken The address of the base token.\n  /// @param _receiver The address of fxUSD recipient.\n  /// @param _amount The amount of fxUSD to mint.\n  function _mintShares(address _baseToken, address _receiver, uint256 _amount) private {\n    unchecked {\n      markets[_baseToken].managed += _amount;\n      legacyTotalSupply += _amount;\n    }\n\n    _mint(_receiver, _amount);\n  }\n\n  /// @dev Internal function to burn fxUSD.\n  /// @param _baseToken The address of the base token.\n  /// @param _owner The address of fxUSD owner.\n  /// @param _amount The amount of fxUSD to burn.\n  function _burnShares(address _baseToken, address _owner, uint256 _amount) private {\n    uint256 _managed = markets[_baseToken].managed;\n    if (_amount > _managed) revert ErrorInsufficientLiquidity();\n    unchecked {\n      markets[_baseToken].managed -= _amount;\n      legacyTotalSupply -= _amount;\n    }\n\n    _burn(_owner, _amount);\n  }\n}\n","deployed_bytecode":"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SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.9.0) (access/AccessControl.sol)\n\npragma solidity ^0.8.0;\n\nimport \"./IAccessControlUpgradeable.sol\";\nimport \"../utils/ContextUpgradeable.sol\";\nimport \"../utils/StringsUpgradeable.sol\";\nimport \"../utils/introspection/ERC165Upgradeable.sol\";\nimport {Initializable} from \"../proxy/utils/Initializable.sol\";\n\n/**\n * @dev Contract module that allows children to implement role-based access\n * control mechanisms. This is a lightweight version that doesn't allow enumerating role\n * members except through off-chain means by accessing the contract event logs. Some\n * applications may benefit from on-chain enumerability, for those cases see\n * {AccessControlEnumerable}.\n *\n * Roles are referred to by their `bytes32` identifier. These should be exposed\n * in the external API and be unique. The best way to achieve this is by\n * using `public constant` hash digests:\n *\n * ```solidity\n * bytes32 public constant MY_ROLE = keccak256(\"MY_ROLE\");\n * ```\n *\n * Roles can be used to represent a set of permissions. To restrict access to a\n * function call, use {hasRole}:\n *\n * ```solidity\n * function foo() public {\n *     require(hasRole(MY_ROLE, msg.sender));\n *     ...\n * }\n * ```\n *\n * Roles can be granted and revoked dynamically via the {grantRole} and\n * {revokeRole} functions. Each role has an associated admin role, and only\n * accounts that have a role's admin role can call {grantRole} and {revokeRole}.\n *\n * By default, the admin role for all roles is `DEFAULT_ADMIN_ROLE`, which means\n * that only accounts with this role will be able to grant or revoke other\n * roles. More complex role relationships can be created by using\n * {_setRoleAdmin}.\n *\n * WARNING: The `DEFAULT_ADMIN_ROLE` is also its own admin: it has permission to\n * grant and revoke this role. Extra precautions should be taken to secure\n * accounts that have been granted it. We recommend using {AccessControlDefaultAdminRules}\n * to enforce additional security measures for this role.\n */\nabstract contract AccessControlUpgradeable is Initializable, ContextUpgradeable, IAccessControlUpgradeable, ERC165Upgradeable {\n    struct RoleData {\n        mapping(address => bool) members;\n        bytes32 adminRole;\n    }\n\n    mapping(bytes32 => RoleData) private _roles;\n\n    bytes32 public constant DEFAULT_ADMIN_ROLE = 0x00;\n\n    /**\n     * @dev Modifier that checks that an account has a specific role. Reverts\n     * with a standardized message including the required role.\n     *\n     * The format of the revert reason is given by the following regular expression:\n     *\n     *  /^AccessControl: account (0x[0-9a-f]{40}) is missing role (0x[0-9a-f]{64})$/\n     *\n     * _Available since v4.1._\n     */\n    modifier onlyRole(bytes32 role) {\n        _checkRole(role);\n        _;\n    }\n\n    function __AccessControl_init() internal onlyInitializing {\n    }\n\n    function __AccessControl_init_unchained() internal onlyInitializing {\n    }\n    /**\n     * @dev See {IERC165-supportsInterface}.\n     */\n    function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {\n        return interfaceId == type(IAccessControlUpgradeable).interfaceId || super.supportsInterface(interfaceId);\n    }\n\n    /**\n     * @dev Returns `true` if `account` has been granted `role`.\n     */\n    function hasRole(bytes32 role, address account) public view virtual override returns (bool) {\n        return _roles[role].members[account];\n    }\n\n    /**\n     * @dev Revert with a standard message if `_msgSender()` is missing `role`.\n     * Overriding this function changes the behavior of the {onlyRole} modifier.\n     *\n     * Format of the revert message is described in {_checkRole}.\n     *\n     * _Available since v4.6._\n     */\n    function _checkRole(bytes32 role) internal view virtual {\n        _checkRole(role, _msgSender());\n    }\n\n    /**\n     * @dev Revert with a standard message if `account` is missing `role`.\n     *\n     * The format of the revert reason is given by the following regular expression:\n     *\n     *  /^AccessControl: account (0x[0-9a-f]{40}) is missing role (0x[0-9a-f]{64})$/\n     */\n    function _checkRole(bytes32 role, address account) internal view virtual {\n        if (!hasRole(role, account)) {\n            revert(\n                string(\n                    abi.encodePacked(\n                        \"AccessControl: account \",\n                        StringsUpgradeable.toHexString(account),\n                        \" is missing role \",\n                        StringsUpgradeable.toHexString(uint256(role), 32)\n                    )\n                )\n            );\n        }\n    }\n\n    /**\n     * @dev Returns the admin role that controls `role`. See {grantRole} and\n     * {revokeRole}.\n     *\n     * To change a role's admin, use {_setRoleAdmin}.\n     */\n    function getRoleAdmin(bytes32 role) public view virtual override returns (bytes32) {\n        return _roles[role].adminRole;\n    }\n\n    /**\n     * @dev Grants `role` to `account`.\n     *\n     * If `account` had not been already granted `role`, emits a {RoleGranted}\n     * event.\n     *\n     * Requirements:\n     *\n     * - the caller must have ``role``'s admin role.\n     *\n     * May emit a {RoleGranted} event.\n     */\n    function grantRole(bytes32 role, address account) public virtual override onlyRole(getRoleAdmin(role)) {\n        _grantRole(role, account);\n    }\n\n    /**\n     * @dev Revokes `role` from `account`.\n     *\n     * If `account` had been granted `role`, emits a {RoleRevoked} event.\n     *\n     * Requirements:\n     *\n     * - the caller must have ``role``'s admin role.\n     *\n     * May emit a {RoleRevoked} event.\n     */\n    function revokeRole(bytes32 role, address account) public virtual override onlyRole(getRoleAdmin(role)) {\n        _revokeRole(role, account);\n    }\n\n    /**\n     * @dev Revokes `role` from the calling account.\n     *\n     * Roles are often managed via {grantRole} and {revokeRole}: this function's\n     * purpose is to provide a mechanism for accounts to lose their privileges\n     * if they are compromised (such as when a trusted device is misplaced).\n     *\n     * If the calling account had been revoked `role`, emits a {RoleRevoked}\n     * event.\n     *\n     * Requirements:\n     *\n     * - the caller must be `account`.\n     *\n     * May emit a {RoleRevoked} event.\n     */\n    function renounceRole(bytes32 role, address account) public virtual override {\n        require(account == _msgSender(), \"AccessControl: can only renounce roles for self\");\n\n        _revokeRole(role, account);\n    }\n\n    /**\n     * @dev Grants `role` to `account`.\n     *\n     * If `account` had not been already granted `role`, emits a {RoleGranted}\n     * event. Note that unlike {grantRole}, this function doesn't perform any\n     * checks on the calling account.\n     *\n     * May emit a {RoleGranted} event.\n     *\n     * [WARNING]\n     * ====\n     * This function should only be called from the constructor when setting\n     * up the initial roles for the system.\n     *\n     * Using this function in any other way is effectively circumventing the admin\n     * system imposed by {AccessControl}.\n     * ====\n     *\n     * NOTE: This function is deprecated in favor of {_grantRole}.\n     */\n    function _setupRole(bytes32 role, address account) internal virtual {\n        _grantRole(role, account);\n    }\n\n    /**\n     * @dev Sets `adminRole` as ``role``'s admin role.\n     *\n     * Emits a {RoleAdminChanged} event.\n     */\n    function _setRoleAdmin(bytes32 role, bytes32 adminRole) internal virtual {\n        bytes32 previousAdminRole = getRoleAdmin(role);\n        _roles[role].adminRole = adminRole;\n        emit RoleAdminChanged(role, previousAdminRole, adminRole);\n    }\n\n    /**\n     * @dev Grants `role` to `account`.\n     *\n     * Internal function without access restriction.\n     *\n     * May emit a {RoleGranted} event.\n     */\n    function _grantRole(bytes32 role, address account) internal virtual {\n        if (!hasRole(role, account)) {\n            _roles[role].members[account] = true;\n            emit RoleGranted(role, account, _msgSender());\n        }\n    }\n\n    /**\n     * @dev Revokes `role` from `account`.\n     *\n     * Internal function without access restriction.\n     *\n     * May emit a {RoleRevoked} event.\n     */\n    function _revokeRole(bytes32 role, address account) internal virtual {\n        if (hasRole(role, account)) {\n            _roles[role].members[account] = false;\n            emit RoleRevoked(role, account, _msgSender());\n        }\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":"project/contracts/interfaces/IPegKeeper.sol","source_code":"// SPDX-License-Identifier: MIT\n\npragma solidity ^0.8.0;\n\ninterface IPegKeeper {\n  /**********\n   * Events *\n   **********/\n\n  /// @notice Emitted when the converter contract is updated.\n  /// @param oldConverter The address of previous converter contract.\n  /// @param newConverter The address of current converter contract.\n  event UpdateConverter(address indexed oldConverter, address indexed newConverter);\n\n  /// @notice Emitted when the curve pool contract is updated.\n  /// @param oldPool The address of previous curve pool contract.\n  /// @param newPool The address of current curve pool contract.\n  event UpdateCurvePool(address indexed oldPool, address indexed newPool);\n\n  /// @notice Emitted when the price threshold is updated.\n  /// @param oldThreshold The value of previous price threshold\n  /// @param newThreshold The value of current price threshold\n  event UpdatePriceThreshold(uint256 oldThreshold, uint256 newThreshold);\n\n  /*************************\n   * Public View Functions *\n   *************************/\n\n  /// @notice Return whether borrow for fxUSD is allowed.\n  function isBorrowAllowed() external view returns (bool);\n\n  /// @notice Return whether redeem fxUSD is allowed.\n  function isRedeemAllowed() external view returns (bool);\n\n  /// @notice Return whether funding costs is enabled.\n  function isFundingEnabled() external view returns (bool);\n  \n  /// @notice Return the price of fxUSD, multiplied by 1e18\n  function getFxUSDPrice() external view returns (uint256);\n\n  /****************************\n   * Public Mutated Functions *\n   ****************************/\n\n  /// @notice Buyback fxUSD with stable reserve in FxUSDSave.\n  /// @param amountIn the amount of stable token to use.\n  /// @param data The hook data to `onSwap`.\n  /// @return amountOut The amount of fxUSD swapped.\n  /// @return bonusOut The amount of bonus fxUSD.\n  function buyback(uint256 amountIn, bytes calldata data) external returns (uint256 amountOut, uint256 bonusOut);\n\n  /// @notice Stabilize the fxUSD price in curve pool.\n  /// @param srcToken The address of source token (fxUSD or stable token).\n  /// @param amountIn the amount of source token to use.\n  /// @param data The hook data to `onSwap`.\n  /// @return amountOut The amount of target token swapped.\n  /// @return bonusOut The amount of bonus token.\n  function stabilize(\n    address srcToken,\n    uint256 amountIn,\n    bytes calldata data\n  ) external returns (uint256 amountOut, uint256 bonusOut);\n\n  /// @notice Swap callback from `buyback` and `stabilize`.\n  /// @param srcToken The address of source token.\n  /// @param srcToken The address of target token.\n  /// @param amountIn the amount of source token to use.\n  /// @param data The callback data.\n  /// @return amountOut The amount of target token swapped.\n  function onSwap(\n    address srcToken,\n    address targetToken,\n    uint256 amountIn,\n    bytes calldata data\n  ) external returns (uint256 amountOut);\n}\n"},{"file_path":"project/contracts/interfaces/IFxUSDRegeneracy.sol","source_code":"// SPDX-License-Identifier: MIT\n\npragma solidity ^0.8.0;\n\ninterface IFxUSDRegeneracy {\n  /**********\n   * Events *\n   **********/\n  \n  /// @notice Emitted when rebalance/liquidate with stable token.\n  /// @param amountStable The amount of stable token used.\n  /// @param amountFxUSD The corresponding amount of fxUSD.\n  event RebalanceWithStable(uint256 amountStable, uint256 amountFxUSD);\n  \n  /// @notice Emitted when buyback fxUSD with stable reserve.\n  /// @param amountStable the amount of stable token used.\n  /// @param amountFxUSD The amount of fxUSD bought.\n  /// @param bonusFxUSD The amount of fxUSD as bonus for caller.\n  event Buyback(uint256 amountStable, uint256 amountFxUSD, uint256 bonusFxUSD);\n\n  /*************************\n   * Public View Functions *\n   *************************/\n\n  /// @notice The address of `PoolManager` contract.\n  function poolManager() external view returns (address);\n\n  /// @notice The address of stable token.\n  function stableToken() external view returns (address);\n\n  /// @notice The address of `PegKeeper` contract.\n  function pegKeeper() external view returns (address);\n\n  /****************************\n   * Public Mutated Functions *\n   ****************************/\n\n  /// @notice Mint fxUSD token someone.\n  function mint(address to, uint256 amount) external;\n\n  /// @notice Burn fxUSD from someone.\n  function burn(address from, uint256 amount) external;\n\n  /// @notice Hook for rebalance/liquidate with stable token.\n  /// @param amountStableToken The amount of stable token.\n  /// @param amountFxUSD The amount of fxUSD.\n  function onRebalanceWithStable(uint256 amountStableToken, uint256 amountFxUSD) external;\n\n  /// @notice Buyback fxUSD with stable token.\n  /// @param amountIn the amount of stable token to use.\n  /// @param receiver The address of bonus receiver.\n  /// @param data The hook data to PegKeeper.\n  /// @return amountOut The amount of fxUSD swapped.\n  /// @return bonusOut The amount of bonus fxUSD.\n  function buyback(\n    uint256 amountIn,\n    address receiver,\n    bytes calldata data\n  ) external returns (uint256 amountOut, uint256 bonusOut);\n}\n"},{"file_path":"npm/@openzeppelin/contracts-upgradeable@4.9.6/access/IAccessControlUpgradeable.sol","source_code":"// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (access/IAccessControl.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev External interface of AccessControl declared to support ERC165 detection.\n */\ninterface IAccessControlUpgradeable {\n    /**\n     * @dev Emitted when `newAdminRole` is set as ``role``'s admin role, replacing `previousAdminRole`\n     *\n     * `DEFAULT_ADMIN_ROLE` is the starting admin for all roles, despite\n     * {RoleAdminChanged} not being emitted signaling this.\n     *\n     * _Available since v3.1._\n     */\n    event RoleAdminChanged(bytes32 indexed role, bytes32 indexed previousAdminRole, bytes32 indexed newAdminRole);\n\n    /**\n     * @dev Emitted when `account` is granted `role`.\n     *\n     * `sender` is the account that originated the contract call, an admin role\n     * bearer except when using {AccessControl-_setupRole}.\n     */\n    event RoleGranted(bytes32 indexed role, address indexed account, address indexed sender);\n\n    /**\n     * @dev Emitted when `account` is revoked `role`.\n     *\n     * `sender` is the account that originated the contract call:\n     *   - if using `revokeRole`, it is the admin role bearer\n     *   - if using `renounceRole`, it is the role bearer (i.e. `account`)\n     */\n    event RoleRevoked(bytes32 indexed role, address indexed account, address indexed sender);\n\n    /**\n     * @dev Returns `true` if `account` has been granted `role`.\n     */\n    function hasRole(bytes32 role, address account) external view returns (bool);\n\n    /**\n     * @dev Returns the admin role that controls `role`. See {grantRole} and\n     * {revokeRole}.\n     *\n     * To change a role's admin, use {AccessControl-_setRoleAdmin}.\n     */\n    function getRoleAdmin(bytes32 role) external view returns (bytes32);\n\n    /**\n     * @dev Grants `role` to `account`.\n     *\n     * If `account` had not been already granted `role`, emits a {RoleGranted}\n     * event.\n     *\n     * Requirements:\n     *\n     * - the caller must have ``role``'s admin role.\n     */\n    function grantRole(bytes32 role, address account) external;\n\n    /**\n     * @dev Revokes `role` from `account`.\n     *\n     * If `account` had been granted `role`, emits a {RoleRevoked} event.\n     *\n     * Requirements:\n     *\n     * - the caller must have ``role``'s admin role.\n     */\n    function revokeRole(bytes32 role, address account) external;\n\n    /**\n     * @dev Revokes `role` from the calling account.\n     *\n     * Roles are often managed via {grantRole} and {revokeRole}: this function's\n     * purpose is to provide a mechanism for accounts to lose their privileges\n     * if they are compromised (such as when a trusted device is misplaced).\n     *\n     * If the calling account had been granted `role`, emits a {RoleRevoked}\n     * event.\n     *\n     * Requirements:\n     *\n     * - the caller must be `account`.\n     */\n    function renounceRole(bytes32 role, address account) external;\n}\n"},{"file_path":"npm/@openzeppelin/contracts-upgradeable@4.9.6/interfaces/IERC5267Upgradeable.sol","source_code":"// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.9.0) (interfaces/IERC5267.sol)\n\npragma solidity ^0.8.0;\n\ninterface IERC5267Upgradeable {\n    /**\n     * @dev MAY be emitted to signal that the domain could have changed.\n     */\n    event EIP712DomainChanged();\n\n    /**\n     * @dev returns the fields and values that describe the domain separator used by this contract for EIP-712\n     * signature.\n     */\n    function eip712Domain()\n        external\n        view\n        returns (\n            bytes1 fields,\n            string memory name,\n            string memory version,\n            uint256 chainId,\n            address verifyingContract,\n            bytes32 salt,\n            uint256[] memory extensions\n        );\n}\n"},{"file_path":"npm/@openzeppelin/contracts-upgradeable@4.9.6/proxy/utils/Initializable.sol","source_code":"// 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":"npm/@openzeppelin/contracts-upgradeable@4.9.6/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":"npm/@openzeppelin/contracts-upgradeable@4.9.6/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":"npm/@openzeppelin/contracts-upgradeable@4.9.6/token/ERC20/extensions/ERC20PermitUpgradeable.sol","source_code":"// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.9.4) (token/ERC20/extensions/ERC20Permit.sol)\n\npragma solidity ^0.8.0;\n\nimport \"./IERC20PermitUpgradeable.sol\";\nimport \"../ERC20Upgradeable.sol\";\nimport \"../../../utils/cryptography/ECDSAUpgradeable.sol\";\nimport \"../../../utils/cryptography/EIP712Upgradeable.sol\";\nimport \"../../../utils/CountersUpgradeable.sol\";\nimport {Initializable} from \"../../../proxy/utils/Initializable.sol\";\n\n/**\n * @dev Implementation 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 * _Available since v3.4._\n *\n * @custom:storage-size 51\n */\nabstract contract ERC20PermitUpgradeable is Initializable, ERC20Upgradeable, IERC20PermitUpgradeable, EIP712Upgradeable {\n    using CountersUpgradeable for CountersUpgradeable.Counter;\n\n    mapping(address => CountersUpgradeable.Counter) private _nonces;\n\n    // solhint-disable-next-line var-name-mixedcase\n    bytes32 private constant _PERMIT_TYPEHASH =\n        keccak256(\"Permit(address owner,address spender,uint256 value,uint256 nonce,uint256 deadline)\");\n    /**\n     * @dev In previous versions `_PERMIT_TYPEHASH` was declared as `immutable`.\n     * However, to ensure consistency with the upgradeable transpiler, we will continue\n     * to reserve a slot.\n     * @custom:oz-renamed-from _PERMIT_TYPEHASH\n     */\n    // solhint-disable-next-line var-name-mixedcase\n    bytes32 private _PERMIT_TYPEHASH_DEPRECATED_SLOT;\n\n    /**\n     * @dev Initializes the {EIP712} domain separator using the `name` parameter, and setting `version` to `\"1\"`.\n     *\n     * It's a good idea to use the same `name` that is defined as the ERC20 token name.\n     */\n    function __ERC20Permit_init(string memory name) internal onlyInitializing {\n        __EIP712_init_unchained(name, \"1\");\n    }\n\n    function __ERC20Permit_init_unchained(string memory) internal onlyInitializing {}\n\n    /**\n     * @inheritdoc IERC20PermitUpgradeable\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    ) public virtual override {\n        require(block.timestamp <= deadline, \"ERC20Permit: expired deadline\");\n\n        bytes32 structHash = keccak256(abi.encode(_PERMIT_TYPEHASH, owner, spender, value, _useNonce(owner), deadline));\n\n        bytes32 hash = _hashTypedDataV4(structHash);\n\n        address signer = ECDSAUpgradeable.recover(hash, v, r, s);\n        require(signer == owner, \"ERC20Permit: invalid signature\");\n\n        _approve(owner, spender, value);\n    }\n\n    /**\n     * @inheritdoc IERC20PermitUpgradeable\n     */\n    function nonces(address owner) public view virtual override returns (uint256) {\n        return _nonces[owner].current();\n    }\n\n    /**\n     * @inheritdoc IERC20PermitUpgradeable\n     */\n    // solhint-disable-next-line func-name-mixedcase\n    function DOMAIN_SEPARATOR() external view override returns (bytes32) {\n        return _domainSeparatorV4();\n    }\n\n    /**\n     * @dev \"Consume a nonce\": return the current value and increment.\n     *\n     * _Available since v4.1._\n     */\n    function _useNonce(address owner) internal virtual returns (uint256 current) {\n        CountersUpgradeable.Counter storage nonce = _nonces[owner];\n        current = nonce.current();\n        nonce.increment();\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":"npm/@openzeppelin/contracts-upgradeable@4.9.6/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":"npm/@openzeppelin/contracts-upgradeable@4.9.6/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":"npm/@openzeppelin/contracts-upgradeable@4.9.6/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":"npm/@openzeppelin/contracts-upgradeable@4.9.6/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":"npm/@openzeppelin/contracts-upgradeable@4.9.6/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":"npm/@openzeppelin/contracts-upgradeable@4.9.6/utils/CountersUpgradeable.sol","source_code":"// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (utils/Counters.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @title Counters\n * @author Matt Condon (@shrugs)\n * @dev Provides counters that can only be incremented, decremented or reset. This can be used e.g. to track the number\n * of elements in a mapping, issuing ERC721 ids, or counting request ids.\n *\n * Include with `using Counters for Counters.Counter;`\n */\nlibrary CountersUpgradeable {\n    struct Counter {\n        // This variable should never be directly accessed by users of the library: interactions must be restricted to\n        // the library's function. As of Solidity v0.5.2, this cannot be enforced, though there is a proposal to add\n        // this feature: see https://github.com/ethereum/solidity/issues/4637\n        uint256 _value; // default: 0\n    }\n\n    function current(Counter storage counter) internal view returns (uint256) {\n        return counter._value;\n    }\n\n    function increment(Counter storage counter) internal {\n        unchecked {\n            counter._value += 1;\n        }\n    }\n\n    function decrement(Counter storage counter) internal {\n        uint256 value = counter._value;\n        require(value > 0, \"Counter: decrement overflow\");\n        unchecked {\n            counter._value = value - 1;\n        }\n    }\n\n    function reset(Counter storage counter) internal {\n        counter._value = 0;\n    }\n}\n"},{"file_path":"npm/@openzeppelin/contracts-upgradeable@4.9.6/utils/StringsUpgradeable.sol","source_code":"// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.9.0) (utils/Strings.sol)\n\npragma solidity ^0.8.0;\n\nimport \"./math/MathUpgradeable.sol\";\nimport \"./math/SignedMathUpgradeable.sol\";\n\n/**\n * @dev String operations.\n */\nlibrary StringsUpgradeable {\n    bytes16 private constant _SYMBOLS = \"0123456789abcdef\";\n    uint8 private constant _ADDRESS_LENGTH = 20;\n\n    /**\n     * @dev Converts a `uint256` to its ASCII `string` decimal representation.\n     */\n    function toString(uint256 value) internal pure returns (string memory) {\n        unchecked {\n            uint256 length = MathUpgradeable.log10(value) + 1;\n            string memory buffer = new string(length);\n            uint256 ptr;\n            /// @solidity memory-safe-assembly\n            assembly {\n                ptr := add(buffer, add(32, length))\n            }\n            while (true) {\n                ptr--;\n                /// @solidity memory-safe-assembly\n                assembly {\n                    mstore8(ptr, byte(mod(value, 10), _SYMBOLS))\n                }\n                value /= 10;\n                if (value == 0) break;\n            }\n            return buffer;\n        }\n    }\n\n    /**\n     * @dev Converts a `int256` to its ASCII `string` decimal representation.\n     */\n    function toString(int256 value) internal pure returns (string memory) {\n        return string(abi.encodePacked(value < 0 ? \"-\" : \"\", toString(SignedMathUpgradeable.abs(value))));\n    }\n\n    /**\n     * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation.\n     */\n    function toHexString(uint256 value) internal pure returns (string memory) {\n        unchecked {\n            return toHexString(value, MathUpgradeable.log256(value) + 1);\n        }\n    }\n\n    /**\n     * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length.\n     */\n    function toHexString(uint256 value, uint256 length) internal pure returns (string memory) {\n        bytes memory buffer = new bytes(2 * length + 2);\n        buffer[0] = \"0\";\n        buffer[1] = \"x\";\n        for (uint256 i = 2 * length + 1; i > 1; --i) {\n            buffer[i] = _SYMBOLS[value & 0xf];\n            value >>= 4;\n        }\n        require(value == 0, \"Strings: hex length insufficient\");\n        return string(buffer);\n    }\n\n    /**\n     * @dev Converts an `address` with fixed length of 20 bytes to its not checksummed ASCII `string` hexadecimal representation.\n     */\n    function toHexString(address addr) internal pure returns (string memory) {\n        return toHexString(uint256(uint160(addr)), _ADDRESS_LENGTH);\n    }\n\n    /**\n     * @dev Returns true if the two strings are equal.\n     */\n    function equal(string memory a, string memory b) internal pure returns (bool) {\n        return keccak256(bytes(a)) == keccak256(bytes(b));\n    }\n}\n"},{"file_path":"npm/@openzeppelin/contracts-upgradeable@4.9.6/utils/cryptography/ECDSAUpgradeable.sol","source_code":"// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.9.0) (utils/cryptography/ECDSA.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../StringsUpgradeable.sol\";\n\n/**\n * @dev Elliptic Curve Digital Signature Algorithm (ECDSA) operations.\n *\n * These functions can be used to verify that a message was signed by the holder\n * of the private keys of a given address.\n */\nlibrary ECDSAUpgradeable {\n    enum RecoverError {\n        NoError,\n        InvalidSignature,\n        InvalidSignatureLength,\n        InvalidSignatureS,\n        InvalidSignatureV // Deprecated in v4.8\n    }\n\n    function _throwError(RecoverError error) private pure {\n        if (error == RecoverError.NoError) {\n            return; // no error: do nothing\n        } else if (error == RecoverError.InvalidSignature) {\n            revert(\"ECDSA: invalid signature\");\n        } else if (error == RecoverError.InvalidSignatureLength) {\n            revert(\"ECDSA: invalid signature length\");\n        } else if (error == RecoverError.InvalidSignatureS) {\n            revert(\"ECDSA: invalid signature 's' value\");\n        }\n    }\n\n    /**\n     * @dev Returns the address that signed a hashed message (`hash`) with\n     * `signature` or error string. This address can then be used for verification purposes.\n     *\n     * The `ecrecover` EVM opcode allows for malleable (non-unique) signatures:\n     * this function rejects them by requiring the `s` value to be in the lower\n     * half order, and the `v` value to be either 27 or 28.\n     *\n     * IMPORTANT: `hash` _must_ be the result of a hash operation for the\n     * verification to be secure: it is possible to craft signatures that\n     * recover to arbitrary addresses for non-hashed data. A safe way to ensure\n     * this is by receiving a hash of the original message (which may otherwise\n     * be too long), and then calling {toEthSignedMessageHash} on it.\n     *\n     * Documentation for signature generation:\n     * - with https://web3js.readthedocs.io/en/v1.3.4/web3-eth-accounts.html#sign[Web3.js]\n     * - with https://docs.ethers.io/v5/api/signer/#Signer-signMessage[ethers]\n     *\n     * _Available since v4.3._\n     */\n    function tryRecover(bytes32 hash, bytes memory signature) internal pure returns (address, RecoverError) {\n        if (signature.length == 65) {\n            bytes32 r;\n            bytes32 s;\n            uint8 v;\n            // ecrecover takes the signature parameters, and the only way to get them\n            // currently is to use assembly.\n            /// @solidity memory-safe-assembly\n            assembly {\n                r := mload(add(signature, 0x20))\n                s := mload(add(signature, 0x40))\n                v := byte(0, mload(add(signature, 0x60)))\n            }\n            return tryRecover(hash, v, r, s);\n        } else {\n            return (address(0), RecoverError.InvalidSignatureLength);\n        }\n    }\n\n    /**\n     * @dev Returns the address that signed a hashed message (`hash`) with\n     * `signature`. This address can then be used for verification purposes.\n     *\n     * The `ecrecover` EVM opcode allows for malleable (non-unique) signatures:\n     * this function rejects them by requiring the `s` value to be in the lower\n     * half order, and the `v` value to be either 27 or 28.\n     *\n     * IMPORTANT: `hash` _must_ be the result of a hash operation for the\n     * verification to be secure: it is possible to craft signatures that\n     * recover to arbitrary addresses for non-hashed data. A safe way to ensure\n     * this is by receiving a hash of the original message (which may otherwise\n     * be too long), and then calling {toEthSignedMessageHash} on it.\n     */\n    function recover(bytes32 hash, bytes memory signature) internal pure returns (address) {\n        (address recovered, RecoverError error) = tryRecover(hash, signature);\n        _throwError(error);\n        return recovered;\n    }\n\n    /**\n     * @dev Overload of {ECDSA-tryRecover} that receives the `r` and `vs` short-signature fields separately.\n     *\n     * See https://eips.ethereum.org/EIPS/eip-2098[EIP-2098 short signatures]\n     *\n     * _Available since v4.3._\n     */\n    function tryRecover(bytes32 hash, bytes32 r, bytes32 vs) internal pure returns (address, RecoverError) {\n        bytes32 s = vs & bytes32(0x7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff);\n        uint8 v = uint8((uint256(vs) >> 255) + 27);\n        return tryRecover(hash, v, r, s);\n    }\n\n    /**\n     * @dev Overload of {ECDSA-recover} that receives the `r and `vs` short-signature fields separately.\n     *\n     * _Available since v4.2._\n     */\n    function recover(bytes32 hash, bytes32 r, bytes32 vs) internal pure returns (address) {\n        (address recovered, RecoverError error) = tryRecover(hash, r, vs);\n        _throwError(error);\n        return recovered;\n    }\n\n    /**\n     * @dev Overload of {ECDSA-tryRecover} that receives the `v`,\n     * `r` and `s` signature fields separately.\n     *\n     * _Available since v4.3._\n     */\n    function tryRecover(bytes32 hash, uint8 v, bytes32 r, bytes32 s) internal pure returns (address, RecoverError) {\n        // EIP-2 still allows signature malleability for ecrecover(). Remove this possibility and make the signature\n        // unique. Appendix F in the Ethereum Yellow paper (https://ethereum.github.io/yellowpaper/paper.pdf), defines\n        // the valid range for s in (301): 0 < s < secp256k1n ÷ 2 + 1, and for v in (302): v ∈ {27, 28}. Most\n        // signatures from current libraries generate a unique signature with an s-value in the lower half order.\n        //\n        // If your library generates malleable signatures, such as s-values in the upper range, calculate a new s-value\n        // with 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEBAAEDCE6AF48A03BBFD25E8CD0364141 - s1 and flip v from 27 to 28 or\n        // vice versa. If your library also generates signatures with 0/1 for v instead 27/28, add 27 to v to accept\n        // these malleable signatures as well.\n        if (uint256(s) > 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF5D576E7357A4501DDFE92F46681B20A0) {\n            return (address(0), RecoverError.InvalidSignatureS);\n        }\n\n        // If the signature is valid (and not malleable), return the signer address\n        address signer = ecrecover(hash, v, r, s);\n        if (signer == address(0)) {\n            return (address(0), RecoverError.InvalidSignature);\n        }\n\n        return (signer, RecoverError.NoError);\n    }\n\n    /**\n     * @dev Overload of {ECDSA-recover} that receives the `v`,\n     * `r` and `s` signature fields separately.\n     */\n    function recover(bytes32 hash, uint8 v, bytes32 r, bytes32 s) internal pure returns (address) {\n        (address recovered, RecoverError error) = tryRecover(hash, v, r, s);\n        _throwError(error);\n        return recovered;\n    }\n\n    /**\n     * @dev Returns an Ethereum Signed Message, created from a `hash`. This\n     * produces hash corresponding to the one signed with the\n     * https://eth.wiki/json-rpc/API#eth_sign[`eth_sign`]\n     * JSON-RPC method as part of EIP-191.\n     *\n     * See {recover}.\n     */\n    function toEthSignedMessageHash(bytes32 hash) internal pure returns (bytes32 message) {\n        // 32 is the length in bytes of hash,\n        // enforced by the type signature above\n        /// @solidity memory-safe-assembly\n        assembly {\n            mstore(0x00, \"\\x19Ethereum Signed Message:\\n32\")\n            mstore(0x1c, hash)\n            message := keccak256(0x00, 0x3c)\n        }\n    }\n\n    /**\n     * @dev Returns an Ethereum Signed Message, created from `s`. This\n     * produces hash corresponding to the one signed with the\n     * https://eth.wiki/json-rpc/API#eth_sign[`eth_sign`]\n     * JSON-RPC method as part of EIP-191.\n     *\n     * See {recover}.\n     */\n    function toEthSignedMessageHash(bytes memory s) internal pure returns (bytes32) {\n        return keccak256(abi.encodePacked(\"\\x19Ethereum Signed Message:\\n\", StringsUpgradeable.toString(s.length), s));\n    }\n\n    /**\n     * @dev Returns an Ethereum Signed Typed Data, created from a\n     * `domainSeparator` and a `structHash`. This produces hash corresponding\n     * to the one signed with the\n     * https://eips.ethereum.org/EIPS/eip-712[`eth_signTypedData`]\n     * JSON-RPC method as part of EIP-712.\n     *\n     * See {recover}.\n     */\n    function toTypedDataHash(bytes32 domainSeparator, bytes32 structHash) internal pure returns (bytes32 data) {\n        /// @solidity memory-safe-assembly\n        assembly {\n            let ptr := mload(0x40)\n            mstore(ptr, \"\\x19\\x01\")\n            mstore(add(ptr, 0x02), domainSeparator)\n            mstore(add(ptr, 0x22), structHash)\n            data := keccak256(ptr, 0x42)\n        }\n    }\n\n    /**\n     * @dev Returns an Ethereum Signed Data with intended validator, created from a\n     * `validator` and `data` according to the version 0 of EIP-191.\n     *\n     * See {recover}.\n     */\n    function toDataWithIntendedValidatorHash(address validator, bytes memory data) internal pure returns (bytes32) {\n        return keccak256(abi.encodePacked(\"\\x19\\x00\", validator, data));\n    }\n}\n"},{"file_path":"npm/@openzeppelin/contracts-upgradeable@4.9.6/utils/cryptography/EIP712Upgradeable.sol","source_code":"// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.9.0) (utils/cryptography/EIP712.sol)\n\npragma solidity ^0.8.8;\n\nimport \"./ECDSAUpgradeable.sol\";\nimport \"../../interfaces/IERC5267Upgradeable.sol\";\nimport {Initializable} from \"../../proxy/utils/Initializable.sol\";\n\n/**\n * @dev https://eips.ethereum.org/EIPS/eip-712[EIP 712] is a standard for hashing and signing of typed structured data.\n *\n * The encoding specified in the EIP is very generic, and such a generic implementation in Solidity is not feasible,\n * thus this contract does not implement the encoding itself. Protocols need to implement the type-specific encoding\n * they need in their contracts using a combination of `abi.encode` and `keccak256`.\n *\n * This contract implements the EIP 712 domain separator ({_domainSeparatorV4}) that is used as part of the encoding\n * scheme, and the final step of the encoding to obtain the message digest that is then signed via ECDSA\n * ({_hashTypedDataV4}).\n *\n * The implementation of the domain separator was designed to be as efficient as possible while still properly updating\n * the chain id to protect against replay attacks on an eventual fork of the chain.\n *\n * NOTE: This contract implements the version of the encoding known as \"v4\", as implemented by the JSON RPC method\n * https://docs.metamask.io/guide/signing-data.html[`eth_signTypedDataV4` in MetaMask].\n *\n * NOTE: In the upgradeable version of this contract, the cached values will correspond to the address, and the domain\n * separator of the implementation contract. This will cause the `_domainSeparatorV4` function to always rebuild the\n * separator from the immutable values, which is cheaper than accessing a cached version in cold storage.\n *\n * _Available since v3.4._\n *\n * @custom:storage-size 52\n */\nabstract contract EIP712Upgradeable is Initializable, IERC5267Upgradeable {\n    bytes32 private constant _TYPE_HASH =\n        keccak256(\"EIP712Domain(string name,string version,uint256 chainId,address verifyingContract)\");\n\n    /// @custom:oz-renamed-from _HASHED_NAME\n    bytes32 private _hashedName;\n    /// @custom:oz-renamed-from _HASHED_VERSION\n    bytes32 private _hashedVersion;\n\n    string private _name;\n    string private _version;\n\n    /**\n     * @dev Initializes the domain separator and parameter caches.\n     *\n     * The meaning of `name` and `version` is specified in\n     * https://eips.ethereum.org/EIPS/eip-712#definition-of-domainseparator[EIP 712]:\n     *\n     * - `name`: the user readable name of the signing domain, i.e. the name of the DApp or the protocol.\n     * - `version`: the current major version of the signing domain.\n     *\n     * NOTE: These parameters cannot be changed except through a xref:learn::upgrading-smart-contracts.adoc[smart\n     * contract upgrade].\n     */\n    function __EIP712_init(string memory name, string memory version) internal onlyInitializing {\n        __EIP712_init_unchained(name, version);\n    }\n\n    function __EIP712_init_unchained(string memory name, string memory version) internal onlyInitializing {\n        _name = name;\n        _version = version;\n\n        // Reset prior values in storage if upgrading\n        _hashedName = 0;\n        _hashedVersion = 0;\n    }\n\n    /**\n     * @dev Returns the domain separator for the current chain.\n     */\n    function _domainSeparatorV4() internal view returns (bytes32) {\n        return _buildDomainSeparator();\n    }\n\n    function _buildDomainSeparator() private view returns (bytes32) {\n        return keccak256(abi.encode(_TYPE_HASH, _EIP712NameHash(), _EIP712VersionHash(), block.chainid, address(this)));\n    }\n\n    /**\n     * @dev Given an already https://eips.ethereum.org/EIPS/eip-712#definition-of-hashstruct[hashed struct], this\n     * function returns the hash of the fully encoded EIP712 message for this domain.\n     *\n     * This hash can be used together with {ECDSA-recover} to obtain the signer of a message. For example:\n     *\n     * ```solidity\n     * bytes32 digest = _hashTypedDataV4(keccak256(abi.encode(\n     *     keccak256(\"Mail(address to,string contents)\"),\n     *     mailTo,\n     *     keccak256(bytes(mailContents))\n     * )));\n     * address signer = ECDSA.recover(digest, signature);\n     * ```\n     */\n    function _hashTypedDataV4(bytes32 structHash) internal view virtual returns (bytes32) {\n        return ECDSAUpgradeable.toTypedDataHash(_domainSeparatorV4(), structHash);\n    }\n\n    /**\n     * @dev See {EIP-5267}.\n     *\n     * _Available since v4.9._\n     */\n    function eip712Domain()\n        public\n        view\n        virtual\n        override\n        returns (\n            bytes1 fields,\n            string memory name,\n            string memory version,\n            uint256 chainId,\n            address verifyingContract,\n            bytes32 salt,\n            uint256[] memory extensions\n        )\n    {\n        // If the hashed name and version in storage are non-zero, the contract hasn't been properly initialized\n        // and the EIP712 domain is not reliable, as it will be missing name and version.\n        require(_hashedName == 0 && _hashedVersion == 0, \"EIP712: Uninitialized\");\n\n        return (\n            hex\"0f\", // 01111\n            _EIP712Name(),\n            _EIP712Version(),\n            block.chainid,\n            address(this),\n            bytes32(0),\n            new uint256[](0)\n        );\n    }\n\n    /**\n     * @dev The name parameter for the EIP712 domain.\n     *\n     * NOTE: This function reads from storage by default, but can be redefined to return a constant value if gas costs\n     * are a concern.\n     */\n    function _EIP712Name() internal virtual view returns (string memory) {\n        return _name;\n    }\n\n    /**\n     * @dev The version parameter for the EIP712 domain.\n     *\n     * NOTE: This function reads from storage by default, but can be redefined to return a constant value if gas costs\n     * are a concern.\n     */\n    function _EIP712Version() internal virtual view returns (string memory) {\n        return _version;\n    }\n\n    /**\n     * @dev The hash of the name parameter for the EIP712 domain.\n     *\n     * NOTE: In previous versions this function was virtual. In this version you should override `_EIP712Name` instead.\n     */\n    function _EIP712NameHash() internal view returns (bytes32) {\n        string memory name = _EIP712Name();\n        if (bytes(name).length > 0) {\n            return keccak256(bytes(name));\n        } else {\n            // If the name is empty, the contract may have been upgraded without initializing the new storage.\n            // We return the name hash in storage if non-zero, otherwise we assume the name is empty by design.\n            bytes32 hashedName = _hashedName;\n            if (hashedName != 0) {\n                return hashedName;\n            } else {\n                return keccak256(\"\");\n            }\n        }\n    }\n\n    /**\n     * @dev The hash of the version parameter for the EIP712 domain.\n     *\n     * NOTE: In previous versions this function was virtual. In this version you should override `_EIP712Version` instead.\n     */\n    function _EIP712VersionHash() internal view returns (bytes32) {\n        string memory version = _EIP712Version();\n        if (bytes(version).length > 0) {\n            return keccak256(bytes(version));\n        } else {\n            // If the version is empty, the contract may have been upgraded without initializing the new storage.\n            // We return the version hash in storage if non-zero, otherwise we assume the version is empty by design.\n            bytes32 hashedVersion = _hashedVersion;\n            if (hashedVersion != 0) {\n                return hashedVersion;\n            } else {\n                return keccak256(\"\");\n            }\n        }\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[48] private __gap;\n}\n"},{"file_path":"npm/@openzeppelin/contracts-upgradeable@4.9.6/utils/introspection/ERC165Upgradeable.sol","source_code":"// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (utils/introspection/ERC165.sol)\n\npragma solidity ^0.8.0;\n\nimport \"./IERC165Upgradeable.sol\";\nimport {Initializable} from \"../../proxy/utils/Initializable.sol\";\n\n/**\n * @dev Implementation of the {IERC165} interface.\n *\n * Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check\n * for the additional interface id that will be supported. For example:\n *\n * ```solidity\n * function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {\n *     return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId);\n * }\n * ```\n *\n * Alternatively, {ERC165Storage} provides an easier to use but more expensive implementation.\n */\nabstract contract ERC165Upgradeable is Initializable, IERC165Upgradeable {\n    function __ERC165_init() internal onlyInitializing {\n    }\n\n    function __ERC165_init_unchained() internal onlyInitializing {\n    }\n    /**\n     * @dev See {IERC165-supportsInterface}.\n     */\n    function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {\n        return interfaceId == type(IERC165Upgradeable).interfaceId;\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":"npm/@openzeppelin/contracts-upgradeable@4.9.6/utils/introspection/IERC165Upgradeable.sol","source_code":"// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (utils/introspection/IERC165.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Interface of the ERC165 standard, as defined in the\n * https://eips.ethereum.org/EIPS/eip-165[EIP].\n *\n * Implementers can declare support of contract interfaces, which can then be\n * queried by others ({ERC165Checker}).\n *\n * For an implementation, see {ERC165}.\n */\ninterface IERC165Upgradeable {\n    /**\n     * @dev Returns true if this contract implements the interface defined by\n     * `interfaceId`. See the corresponding\n     * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section]\n     * to learn more about how these ids are created.\n     *\n     * This function call must use less than 30 000 gas.\n     */\n    function supportsInterface(bytes4 interfaceId) external view returns (bool);\n}\n"},{"file_path":"npm/@openzeppelin/contracts-upgradeable@4.9.6/utils/math/MathUpgradeable.sol","source_code":"// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.9.0) (utils/math/Math.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Standard math utilities missing in the Solidity language.\n */\nlibrary MathUpgradeable {\n    enum Rounding {\n        Down, // Toward negative infinity\n        Up, // Toward infinity\n        Zero // Toward zero\n    }\n\n    /**\n     * @dev Returns the largest of two numbers.\n     */\n    function max(uint256 a, uint256 b) internal pure returns (uint256) {\n        return a > b ? a : b;\n    }\n\n    /**\n     * @dev Returns the smallest of two numbers.\n     */\n    function min(uint256 a, uint256 b) internal pure returns (uint256) {\n        return a < b ? a : b;\n    }\n\n    /**\n     * @dev Returns the average of two numbers. The result is rounded towards\n     * zero.\n     */\n    function average(uint256 a, uint256 b) internal pure returns (uint256) {\n        // (a + b) / 2 can overflow.\n        return (a & b) + (a ^ b) / 2;\n    }\n\n    /**\n     * @dev Returns the ceiling of the division of two numbers.\n     *\n     * This differs from standard division with `/` in that it rounds up instead\n     * of rounding down.\n     */\n    function ceilDiv(uint256 a, uint256 b) internal pure returns (uint256) {\n        // (a + b - 1) / b can overflow on addition, so we distribute.\n        return a == 0 ? 0 : (a - 1) / b + 1;\n    }\n\n    /**\n     * @notice Calculates floor(x * y / denominator) with full precision. Throws if result overflows a uint256 or denominator == 0\n     * @dev Original credit to Remco Bloemen under MIT license (https://xn--2-umb.com/21/muldiv)\n     * with further edits by Uniswap Labs also under MIT license.\n     */\n    function mulDiv(uint256 x, uint256 y, uint256 denominator) internal pure returns (uint256 result) {\n        unchecked {\n            // 512-bit multiply [prod1 prod0] = x * y. Compute the product mod 2^256 and mod 2^256 - 1, then use\n            // use the Chinese Remainder Theorem to reconstruct the 512 bit result. The result is stored in two 256\n            // variables such that product = prod1 * 2^256 + prod0.\n            uint256 prod0; // Least significant 256 bits of the product\n            uint256 prod1; // Most significant 256 bits of the product\n            assembly {\n                let mm := mulmod(x, y, not(0))\n                prod0 := mul(x, y)\n                prod1 := sub(sub(mm, prod0), lt(mm, prod0))\n            }\n\n            // Handle non-overflow cases, 256 by 256 division.\n            if (prod1 == 0) {\n                // Solidity will revert if denominator == 0, unlike the div opcode on its own.\n                // The surrounding unchecked block does not change this fact.\n                // See https://docs.soliditylang.org/en/latest/control-structures.html#checked-or-unchecked-arithmetic.\n                return prod0 / denominator;\n            }\n\n            // Make sure the result is less than 2^256. Also prevents denominator == 0.\n            require(denominator > prod1, \"Math: mulDiv overflow\");\n\n            ///////////////////////////////////////////////\n            // 512 by 256 division.\n            ///////////////////////////////////////////////\n\n            // Make division exact by subtracting the remainder from [prod1 prod0].\n            uint256 remainder;\n            assembly {\n                // Compute remainder using mulmod.\n                remainder := mulmod(x, y, denominator)\n\n                // Subtract 256 bit number from 512 bit number.\n                prod1 := sub(prod1, gt(remainder, prod0))\n                prod0 := sub(prod0, remainder)\n            }\n\n            // Factor powers of two out of denominator and compute largest power of two divisor of denominator. Always >= 1.\n            // See https://cs.stackexchange.com/q/138556/92363.\n\n            // Does not overflow because the denominator cannot be zero at this stage in the function.\n            uint256 twos = denominator & (~denominator + 1);\n            assembly {\n                // Divide denominator by twos.\n                denominator := div(denominator, twos)\n\n                // Divide [prod1 prod0] by twos.\n                prod0 := div(prod0, twos)\n\n                // Flip twos such that it is 2^256 / twos. If twos is zero, then it becomes one.\n                twos := add(div(sub(0, twos), twos), 1)\n            }\n\n            // Shift in bits from prod1 into prod0.\n            prod0 |= prod1 * twos;\n\n            // Invert denominator mod 2^256. Now that denominator is an odd number, it has an inverse modulo 2^256 such\n            // that denominator * inv = 1 mod 2^256. Compute the inverse by starting with a seed that is correct for\n            // four bits. That is, denominator * inv = 1 mod 2^4.\n            uint256 inverse = (3 * denominator) ^ 2;\n\n            // Use the Newton-Raphson iteration to improve the precision. Thanks to Hensel's lifting lemma, this also works\n            // in modular arithmetic, doubling the correct bits in each step.\n            inverse *= 2 - denominator * inverse; // inverse mod 2^8\n            inverse *= 2 - denominator * inverse; // inverse mod 2^16\n            inverse *= 2 - denominator * inverse; // inverse mod 2^32\n            inverse *= 2 - denominator * inverse; // inverse mod 2^64\n            inverse *= 2 - denominator * inverse; // inverse mod 2^128\n            inverse *= 2 - denominator * inverse; // inverse mod 2^256\n\n            // Because the division is now exact we can divide by multiplying with the modular inverse of denominator.\n            // This will give us the correct result modulo 2^256. Since the preconditions guarantee that the outcome is\n            // less than 2^256, this is the final result. We don't need to compute the high bits of the result and prod1\n            // is no longer required.\n            result = prod0 * inverse;\n            return result;\n        }\n    }\n\n    /**\n     * @notice Calculates x * y / denominator with full precision, following the selected rounding direction.\n     */\n    function mulDiv(uint256 x, uint256 y, uint256 denominator, Rounding rounding) internal pure returns (uint256) {\n        uint256 result = mulDiv(x, y, denominator);\n        if (rounding == Rounding.Up && mulmod(x, y, denominator) > 0) {\n            result += 1;\n        }\n        return result;\n    }\n\n    /**\n     * @dev Returns the square root of a number. If the number is not a perfect square, the value is rounded down.\n     *\n     * Inspired by Henry S. Warren, Jr.'s \"Hacker's Delight\" (Chapter 11).\n     */\n    function sqrt(uint256 a) internal pure returns (uint256) {\n        if (a == 0) {\n            return 0;\n        }\n\n        // For our first guess, we get the biggest power of 2 which is smaller than the square root of the target.\n        //\n        // We know that the \"msb\" (most significant bit) of our target number `a` is a power of 2 such that we have\n        // `msb(a) <= a < 2*msb(a)`. This value can be written `msb(a)=2**k` with `k=log2(a)`.\n        //\n        // This can be rewritten `2**log2(a) <= a < 2**(log2(a) + 1)`\n        // → `sqrt(2**k) <= sqrt(a) < sqrt(2**(k+1))`\n        // → `2**(k/2) <= sqrt(a) < 2**((k+1)/2) <= 2**(k/2 + 1)`\n        //\n        // Consequently, `2**(log2(a) / 2)` is a good first approximation of `sqrt(a)` with at least 1 correct bit.\n        uint256 result = 1 << (log2(a) >> 1);\n\n        // At this point `result` is an estimation with one bit of precision. We know the true value is a uint128,\n        // since it is the square root of a uint256. Newton's method converges quadratically (precision doubles at\n        // every iteration). We thus need at most 7 iteration to turn our partial result with one bit of precision\n        // into the expected uint128 result.\n        unchecked {\n            result = (result + a / result) >> 1;\n            result = (result + a / result) >> 1;\n            result = (result + a / result) >> 1;\n            result = (result + a / result) >> 1;\n            result = (result + a / result) >> 1;\n            result = (result + a / result) >> 1;\n            result = (result + a / result) >> 1;\n            return min(result, a / result);\n        }\n    }\n\n    /**\n     * @notice Calculates sqrt(a), following the selected rounding direction.\n     */\n    function sqrt(uint256 a, Rounding rounding) internal pure returns (uint256) {\n        unchecked {\n            uint256 result = sqrt(a);\n            return result + (rounding == Rounding.Up && result * result < a ? 1 : 0);\n        }\n    }\n\n    /**\n     * @dev Return the log in base 2, rounded down, of a positive value.\n     * Returns 0 if given 0.\n     */\n    function log2(uint256 value) internal pure returns (uint256) {\n        uint256 result = 0;\n        unchecked {\n            if (value >> 128 > 0) {\n                value >>= 128;\n                result += 128;\n            }\n            if (value >> 64 > 0) {\n                value >>= 64;\n                result += 64;\n            }\n            if (value >> 32 > 0) {\n                value >>= 32;\n                result += 32;\n            }\n            if (value >> 16 > 0) {\n                value >>= 16;\n                result += 16;\n            }\n            if (value >> 8 > 0) {\n                value >>= 8;\n                result += 8;\n            }\n            if (value >> 4 > 0) {\n                value >>= 4;\n                result += 4;\n            }\n            if (value >> 2 > 0) {\n                value >>= 2;\n                result += 2;\n            }\n            if (value >> 1 > 0) {\n                result += 1;\n            }\n        }\n        return result;\n    }\n\n    /**\n     * @dev Return the log in base 2, following the selected rounding direction, of a positive value.\n     * Returns 0 if given 0.\n     */\n    function log2(uint256 value, Rounding rounding) internal pure returns (uint256) {\n        unchecked {\n            uint256 result = log2(value);\n            return result + (rounding == Rounding.Up && 1 << result < value ? 1 : 0);\n        }\n    }\n\n    /**\n     * @dev Return the log in base 10, rounded down, of a positive value.\n     * Returns 0 if given 0.\n     */\n    function log10(uint256 value) internal pure returns (uint256) {\n        uint256 result = 0;\n        unchecked {\n            if (value >= 10 ** 64) {\n                value /= 10 ** 64;\n                result += 64;\n            }\n            if (value >= 10 ** 32) {\n                value /= 10 ** 32;\n                result += 32;\n            }\n            if (value >= 10 ** 16) {\n                value /= 10 ** 16;\n                result += 16;\n            }\n            if (value >= 10 ** 8) {\n                value /= 10 ** 8;\n                result += 8;\n            }\n            if (value >= 10 ** 4) {\n                value /= 10 ** 4;\n                result += 4;\n            }\n            if (value >= 10 ** 2) {\n                value /= 10 ** 2;\n                result += 2;\n            }\n            if (value >= 10 ** 1) {\n                result += 1;\n            }\n        }\n        return result;\n    }\n\n    /**\n     * @dev Return the log in base 10, following the selected rounding direction, of a positive value.\n     * Returns 0 if given 0.\n     */\n    function log10(uint256 value, Rounding rounding) internal pure returns (uint256) {\n        unchecked {\n            uint256 result = log10(value);\n            return result + (rounding == Rounding.Up && 10 ** result < value ? 1 : 0);\n        }\n    }\n\n    /**\n     * @dev Return the log in base 256, rounded down, of a positive value.\n     * Returns 0 if given 0.\n     *\n     * Adding one to the result gives the number of pairs of hex symbols needed to represent `value` as a hex string.\n     */\n    function log256(uint256 value) internal pure returns (uint256) {\n        uint256 result = 0;\n        unchecked {\n            if (value >> 128 > 0) {\n                value >>= 128;\n                result += 16;\n            }\n            if (value >> 64 > 0) {\n                value >>= 64;\n                result += 8;\n            }\n            if (value >> 32 > 0) {\n                value >>= 32;\n                result += 4;\n            }\n            if (value >> 16 > 0) {\n                value >>= 16;\n                result += 2;\n            }\n            if (value >> 8 > 0) {\n                result += 1;\n            }\n        }\n        return result;\n    }\n\n    /**\n     * @dev Return the log in base 256, following the selected rounding direction, of a positive value.\n     * Returns 0 if given 0.\n     */\n    function log256(uint256 value, Rounding rounding) internal pure returns (uint256) {\n        unchecked {\n            uint256 result = log256(value);\n            return result + (rounding == Rounding.Up && 1 << (result << 3) < value ? 1 : 0);\n        }\n    }\n}\n"},{"file_path":"npm/@openzeppelin/contracts-upgradeable@4.9.6/utils/math/SignedMathUpgradeable.sol","source_code":"// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.8.0) (utils/math/SignedMath.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Standard signed math utilities missing in the Solidity language.\n */\nlibrary SignedMathUpgradeable {\n    /**\n     * @dev Returns the largest of two signed numbers.\n     */\n    function max(int256 a, int256 b) internal pure returns (int256) {\n        return a > b ? a : b;\n    }\n\n    /**\n     * @dev Returns the smallest of two signed numbers.\n     */\n    function min(int256 a, int256 b) internal pure returns (int256) {\n        return a < b ? a : b;\n    }\n\n    /**\n     * @dev Returns the average of two signed numbers without overflow.\n     * The result is rounded towards zero.\n     */\n    function average(int256 a, int256 b) internal pure returns (int256) {\n        // Formula from the book \"Hacker's Delight\"\n        int256 x = (a & b) + ((a ^ b) >> 1);\n        return x + (int256(uint256(x) >> 255) & (a ^ b));\n    }\n\n    /**\n     * @dev Returns the absolute unsigned value of a signed value.\n     */\n    function abs(int256 n) internal pure returns (uint256) {\n        unchecked {\n            // must be unchecked in order to support `n = type(int256).min`\n            return uint256(n >= 0 ? n : -n);\n        }\n    }\n}\n"},{"file_path":"npm/@openzeppelin/contracts-upgradeable@4.9.6/utils/structs/EnumerableSetUpgradeable.sol","source_code":"// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.9.0) (utils/structs/EnumerableSet.sol)\n// This file was procedurally generated from scripts/generate/templates/EnumerableSet.js.\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Library for managing\n * https://en.wikipedia.org/wiki/Set_(abstract_data_type)[sets] of primitive\n * types.\n *\n * Sets have the following properties:\n *\n * - Elements are added, removed, and checked for existence in constant time\n * (O(1)).\n * - Elements are enumerated in O(n). No guarantees are made on the ordering.\n *\n * ```solidity\n * contract Example {\n *     // Add the library methods\n *     using EnumerableSet for EnumerableSet.AddressSet;\n *\n *     // Declare a set state variable\n *     EnumerableSet.AddressSet private mySet;\n * }\n * ```\n *\n * As of v3.3.0, sets of type `bytes32` (`Bytes32Set`), `address` (`AddressSet`)\n * and `uint256` (`UintSet`) are supported.\n *\n * [WARNING]\n * ====\n * Trying to delete such a structure from storage will likely result in data corruption, rendering the structure\n * unusable.\n * See https://github.com/ethereum/solidity/pull/11843[ethereum/solidity#11843] for more info.\n *\n * In order to clean an EnumerableSet, you can either remove all elements one by one or create a fresh instance using an\n * array of EnumerableSet.\n * ====\n */\nlibrary EnumerableSetUpgradeable {\n    // To implement this library for multiple types with as little code\n    // repetition as possible, we write it in terms of a generic Set type with\n    // bytes32 values.\n    // The Set implementation uses private functions, and user-facing\n    // implementations (such as AddressSet) are just wrappers around the\n    // underlying Set.\n    // This means that we can only create new EnumerableSets for types that fit\n    // in bytes32.\n\n    struct Set {\n        // Storage of set values\n        bytes32[] _values;\n        // Position of the value in the `values` array, plus 1 because index 0\n        // means a value is not in the set.\n        mapping(bytes32 => uint256) _indexes;\n    }\n\n    /**\n     * @dev Add a value to a set. O(1).\n     *\n     * Returns true if the value was added to the set, that is if it was not\n     * already present.\n     */\n    function _add(Set storage set, bytes32 value) private returns (bool) {\n        if (!_contains(set, value)) {\n            set._values.push(value);\n            // The value is stored at length-1, but we add 1 to all indexes\n            // and use 0 as a sentinel value\n            set._indexes[value] = set._values.length;\n            return true;\n        } else {\n            return false;\n        }\n    }\n\n    /**\n     * @dev Removes a value from a set. O(1).\n     *\n     * Returns true if the value was removed from the set, that is if it was\n     * present.\n     */\n    function _remove(Set storage set, bytes32 value) private returns (bool) {\n        // We read and store the value's index to prevent multiple reads from the same storage slot\n        uint256 valueIndex = set._indexes[value];\n\n        if (valueIndex != 0) {\n            // Equivalent to contains(set, value)\n            // To delete an element from the _values array in O(1), we swap the element to delete with the last one in\n            // the array, and then remove the last element (sometimes called as 'swap and pop').\n            // This modifies the order of the array, as noted in {at}.\n\n            uint256 toDeleteIndex = valueIndex - 1;\n            uint256 lastIndex = set._values.length - 1;\n\n            if (lastIndex != toDeleteIndex) {\n                bytes32 lastValue = set._values[lastIndex];\n\n                // Move the last value to the index where the value to delete is\n                set._values[toDeleteIndex] = lastValue;\n                // Update the index for the moved value\n                set._indexes[lastValue] = valueIndex; // Replace lastValue's index to valueIndex\n            }\n\n            // Delete the slot where the moved value was stored\n            set._values.pop();\n\n            // Delete the index for the deleted slot\n            delete set._indexes[value];\n\n            return true;\n        } else {\n            return false;\n        }\n    }\n\n    /**\n     * @dev Returns true if the value is in the set. O(1).\n     */\n    function _contains(Set storage set, bytes32 value) private view returns (bool) {\n        return set._indexes[value] != 0;\n    }\n\n    /**\n     * @dev Returns the number of values on the set. O(1).\n     */\n    function _length(Set storage set) private view returns (uint256) {\n        return set._values.length;\n    }\n\n    /**\n     * @dev Returns the value stored at position `index` in the set. O(1).\n     *\n     * Note that there are no guarantees on the ordering of values inside the\n     * array, and it may change when more values are added or removed.\n     *\n     * Requirements:\n     *\n     * - `index` must be strictly less than {length}.\n     */\n    function _at(Set storage set, uint256 index) private view returns (bytes32) {\n        return set._values[index];\n    }\n\n    /**\n     * @dev Return the entire set in an array\n     *\n     * WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed\n     * to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that\n     * this function has an unbounded cost, and using it as part of a state-changing function may render the function\n     * uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block.\n     */\n    function _values(Set storage set) private view returns (bytes32[] memory) {\n        return set._values;\n    }\n\n    // Bytes32Set\n\n    struct Bytes32Set {\n        Set _inner;\n    }\n\n    /**\n     * @dev Add a value to a set. O(1).\n     *\n     * Returns true if the value was added to the set, that is if it was not\n     * already present.\n     */\n    function add(Bytes32Set storage set, bytes32 value) internal returns (bool) {\n        return _add(set._inner, value);\n    }\n\n    /**\n     * @dev Removes a value from a set. O(1).\n     *\n     * Returns true if the value was removed from the set, that is if it was\n     * present.\n     */\n    function remove(Bytes32Set storage set, bytes32 value) internal returns (bool) {\n        return _remove(set._inner, value);\n    }\n\n    /**\n     * @dev Returns true if the value is in the set. O(1).\n     */\n    function contains(Bytes32Set storage set, bytes32 value) internal view returns (bool) {\n        return _contains(set._inner, value);\n    }\n\n    /**\n     * @dev Returns the number of values in the set. O(1).\n     */\n    function length(Bytes32Set storage set) internal view returns (uint256) {\n        return _length(set._inner);\n    }\n\n    /**\n     * @dev Returns the value stored at position `index` in the set. O(1).\n     *\n     * Note that there are no guarantees on the ordering of values inside the\n     * array, and it may change when more values are added or removed.\n     *\n     * Requirements:\n     *\n     * - `index` must be strictly less than {length}.\n     */\n    function at(Bytes32Set storage set, uint256 index) internal view returns (bytes32) {\n        return _at(set._inner, index);\n    }\n\n    /**\n     * @dev Return the entire set in an array\n     *\n     * WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed\n     * to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that\n     * this function has an unbounded cost, and using it as part of a state-changing function may render the function\n     * uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block.\n     */\n    function values(Bytes32Set storage set) internal view returns (bytes32[] memory) {\n        bytes32[] memory store = _values(set._inner);\n        bytes32[] memory result;\n\n        /// @solidity memory-safe-assembly\n        assembly {\n            result := store\n        }\n\n        return result;\n    }\n\n    // AddressSet\n\n    struct AddressSet {\n        Set _inner;\n    }\n\n    /**\n     * @dev Add a value to a set. O(1).\n     *\n     * Returns true if the value was added to the set, that is if it was not\n     * already present.\n     */\n    function add(AddressSet storage set, address value) internal returns (bool) {\n        return _add(set._inner, bytes32(uint256(uint160(value))));\n    }\n\n    /**\n     * @dev Removes a value from a set. O(1).\n     *\n     * Returns true if the value was removed from the set, that is if it was\n     * present.\n     */\n    function remove(AddressSet storage set, address value) internal returns (bool) {\n        return _remove(set._inner, bytes32(uint256(uint160(value))));\n    }\n\n    /**\n     * @dev Returns true if the value is in the set. O(1).\n     */\n    function contains(AddressSet storage set, address value) internal view returns (bool) {\n        return _contains(set._inner, bytes32(uint256(uint160(value))));\n    }\n\n    /**\n     * @dev Returns the number of values in the set. O(1).\n     */\n    function length(AddressSet storage set) internal view returns (uint256) {\n        return _length(set._inner);\n    }\n\n    /**\n     * @dev Returns the value stored at position `index` in the set. O(1).\n     *\n     * Note that there are no guarantees on the ordering of values inside the\n     * array, and it may change when more values are added or removed.\n     *\n     * Requirements:\n     *\n     * - `index` must be strictly less than {length}.\n     */\n    function at(AddressSet storage set, uint256 index) internal view returns (address) {\n        return address(uint160(uint256(_at(set._inner, index))));\n    }\n\n    /**\n     * @dev Return the entire set in an array\n     *\n     * WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed\n     * to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that\n     * this function has an unbounded cost, and using it as part of a state-changing function may render the function\n     * uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block.\n     */\n    function values(AddressSet storage set) internal view returns (address[] memory) {\n        bytes32[] memory store = _values(set._inner);\n        address[] memory result;\n\n        /// @solidity memory-safe-assembly\n        assembly {\n            result := store\n        }\n\n        return result;\n    }\n\n    // UintSet\n\n    struct UintSet {\n        Set _inner;\n    }\n\n    /**\n     * @dev Add a value to a set. O(1).\n     *\n     * Returns true if the value was added to the set, that is if it was not\n     * already present.\n     */\n    function add(UintSet storage set, uint256 value) internal returns (bool) {\n        return _add(set._inner, bytes32(value));\n    }\n\n    /**\n     * @dev Removes a value from a set. O(1).\n     *\n     * Returns true if the value was removed from the set, that is if it was\n     * present.\n     */\n    function remove(UintSet storage set, uint256 value) internal returns (bool) {\n        return _remove(set._inner, bytes32(value));\n    }\n\n    /**\n     * @dev Returns true if the value is in the set. O(1).\n     */\n    function contains(UintSet storage set, uint256 value) internal view returns (bool) {\n        return _contains(set._inner, bytes32(value));\n    }\n\n    /**\n     * @dev Returns the number of values in the set. O(1).\n     */\n    function length(UintSet storage set) internal view returns (uint256) {\n        return _length(set._inner);\n    }\n\n    /**\n     * @dev Returns the value stored at position `index` in the set. O(1).\n     *\n     * Note that there are no guarantees on the ordering of values inside the\n     * array, and it may change when more values are added or removed.\n     *\n     * Requirements:\n     *\n     * - `index` must be strictly less than {length}.\n     */\n    function at(UintSet storage set, uint256 index) internal view returns (uint256) {\n        return uint256(_at(set._inner, index));\n    }\n\n    /**\n     * @dev Return the entire set in an array\n     *\n     * WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed\n     * to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that\n     * this function has an unbounded cost, and using it as part of a state-changing function may render the function\n     * uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block.\n     */\n    function values(UintSet storage set) internal view returns (uint256[] memory) {\n        bytes32[] memory store = _values(set._inner);\n        uint256[] memory result;\n\n        /// @solidity memory-safe-assembly\n        assembly {\n            result := store\n        }\n\n        return result;\n    }\n}\n"},{"file_path":"project/contracts/libraries/Math.sol","source_code":"// SPDX-License-Identifier: MIT\n\npragma solidity ^0.8.26;\n\nlibrary Math {\n  enum Rounding {\n    Up,\n    Down\n  }\n\n  /// @dev Internal return the value of min(a, b).\n  function min(uint256 a, uint256 b) internal pure returns (uint256) {\n    return a < b ? a : b;\n  }\n\n  /// @dev Internal return the value of max(a, b).\n  function max(uint256 a, uint256 b) internal pure returns (uint256) {\n    return a > b ? a : b;\n  }\n\n  /// @dev Internal return the value of a * b / c, with rounding.\n  function mulDiv(uint256 a, uint256 b, uint256 c, Rounding rounding) internal pure returns (uint256) {\n    return rounding == Rounding.Down ? mulDivDown(a, b, c) : mulDivUp(a, b, c);\n  }\n\n  /// @dev Internal return the value of ceil(a * b / c).\n  function mulDivUp(uint256 a, uint256 b, uint256 c) internal pure returns (uint256) {\n    return (a * b + c - 1) / c;\n  }\n\n  /// @dev Internal return the value of floor(a * b / c).\n  function mulDivDown(uint256 a, uint256 b, uint256 c) internal pure returns (uint256) {\n    return (a * b) / c;\n  }\n\n  /**\n   * @dev Returns the square root of a number. If the number is not a perfect square, the value is rounded down.\n   *\n   * Inspired by Henry S. Warren, Jr.'s \"Hacker's Delight\" (Chapter 11).\n   */\n  function sqrt(uint256 a) internal pure returns (uint256) {\n    if (a == 0) {\n      return 0;\n    }\n\n    // For our first guess, we get the biggest power of 2 which is smaller than the square root of the target.\n    // We know that the \"msb\" (most significant bit) of our target number `a` is a power of 2 such that we have\n    // `msb(a) <= a < 2*msb(a)`.\n    // We also know that `k`, the position of the most significant bit, is such that `msb(a) = 2**k`.\n    // This gives `2**k < a <= 2**(k+1)` → `2**(k/2) <= sqrt(a) < 2 ** (k/2+1)`.\n    // Using an algorithm similar to the msb computation, we are able to compute `result = 2**(k/2)` which is a\n    // good first approximation of `sqrt(a)` with at least 1 correct bit.\n    uint256 result = 1;\n    uint256 x = a;\n    if (x >> 128 > 0) {\n      x >>= 128;\n      result <<= 64;\n    }\n    if (x >> 64 > 0) {\n      x >>= 64;\n      result <<= 32;\n    }\n    if (x >> 32 > 0) {\n      x >>= 32;\n      result <<= 16;\n    }\n    if (x >> 16 > 0) {\n      x >>= 16;\n      result <<= 8;\n    }\n    if (x >> 8 > 0) {\n      x >>= 8;\n      result <<= 4;\n    }\n    if (x >> 4 > 0) {\n      x >>= 4;\n      result <<= 2;\n    }\n    if (x >> 2 > 0) {\n      result <<= 1;\n    }\n\n    // At this point `result` is an estimation with one bit of precision. We know the true value is a uint128,\n    // since it is the square root of a uint256. Newton's method converges quadratically (precision doubles at\n    // every iteration). We thus need at most 7 iteration to turn our partial result with one bit of precision\n    // into the expected uint128 result.\n    unchecked {\n      result = (result + a / result) >> 1;\n      result = (result + a / result) >> 1;\n      result = (result + a / result) >> 1;\n      result = (result + a / result) >> 1;\n      result = (result + a / result) >> 1;\n      result = (result + a / result) >> 1;\n      result = (result + a / result) >> 1;\n      return min(result, a / result);\n    }\n  }\n}\n"},{"file_path":"project/contracts/v2/interfaces/IFxBoostableRebalancePool.sol","source_code":"// SPDX-License-Identifier: MIT\n\npragma solidity ^0.8.0;\n\ninterface IFxBoostableRebalancePool {\n  /**********\n   * Events *\n   **********/\n\n  /// @notice Emitted when user deposit asset into this contract.\n  /// @param owner The address of asset owner.\n  /// @param reciever The address of receiver of the asset in this contract.\n  /// @param amount The amount of asset deposited.\n  event Deposit(address indexed owner, address indexed reciever, uint256 amount);\n\n  /// @notice Emitted when the amount of deposited asset changed due to liquidation or deposit or unlock.\n  /// @param owner The address of asset owner.\n  /// @param newDeposit The new amount of deposited asset.\n  /// @param loss The amount of asset used by liquidation.\n  event UserDepositChange(address indexed owner, uint256 newDeposit, uint256 loss);\n\n  /// @notice Emitted when user withdraw asset.\n  /// @param owner The address of asset owner.\n  /// @param reciever The address of receiver of the asset.\n  /// @param amount The amount of token to withdraw.\n  event Withdraw(address indexed owner, address indexed reciever, uint256 amount);\n\n  /// @notice Emitted when liquidation happens.\n  /// @param liquidated The amount of asset liquidated.\n  /// @param baseGained The amount of base token gained.\n  event Liquidate(uint256 liquidated, uint256 baseGained);\n\n  /// @notice Emitted when the address of reward wrapper is updated.\n  /// @param oldWrapper The address of previous reward wrapper.\n  /// @param newWrapper The address of current reward wrapper.\n  event UpdateWrapper(address indexed oldWrapper, address indexed newWrapper);\n\n  /// @notice Emitted when the liquidatable collateral ratio is updated.\n  /// @param oldRatio The previous liquidatable collateral ratio.\n  /// @param newRatio The current liquidatable collateral ratio.\n  event UpdateLiquidatableCollateralRatio(uint256 oldRatio, uint256 newRatio);\n\n  /**********\n   * Errors *\n   **********/\n\n  /// @dev Thrown then the src token mismatched.\n  error ErrorWrapperSrcMismatch();\n\n  /// @dev Thrown then the dst token mismatched.\n  error ErrorWrapperDstMismatch();\n\n  /// @dev Thrown when the deposited amount is zero.\n  error DepositZeroAmount();\n\n  /// @dev Thrown when the withdrawn amount is zero.\n  error WithdrawZeroAmount();\n\n  /// @dev Thrown the cannot liquidate.\n  error CannotLiquidate();\n\n  /*************************\n   * Public View Functions *\n   *************************/\n\n  /// @notice Return the address of treasury contract.\n  function treasury() external view returns (address);\n\n  /// @notice Return the address of market contract.\n  function market() external view returns (address);\n\n  /// @notice Return the address of base token.\n  function baseToken() external view returns (address);\n\n  /// @notice Return the address of underlying token of this contract.\n  function asset() external view returns (address);\n\n  /// @notice Return the total amount of asset deposited to this contract.\n  function totalSupply() external view returns (uint256);\n\n  /// @notice Return the amount of deposited asset for some specific user.\n  /// @param account The address of user to query.\n  function balanceOf(address account) external view returns (uint256);\n\n  /// @notice Return the current boost ratio for some specific user.\n  /// @param account The address of user to query, multiplied by 1e18.\n  function getBoostRatio(address account) external view returns (uint256);\n\n  /****************************\n   * Public Mutated Functions *\n   ****************************/\n\n  /// @notice Deposit some asset to this contract.\n  /// @dev Use `amount=uint256(-1)` if you want to deposit all asset held.\n  /// @param amount The amount of asset to deposit.\n  /// @param receiver The address of recipient for the deposited asset.\n  function deposit(uint256 amount, address receiver) external;\n\n  /// @notice Withdraw asset from this contract.\n  function withdraw(uint256 amount, address receiver) external;\n\n  /// @notice Liquidate asset for base token.\n  /// @param maxAmount The maximum amount of asset to liquidate.\n  /// @param minBaseOut The minimum amount of base token should receive.\n  /// @return liquidated The amount of asset liquidated.\n  /// @return baseOut The amount of base token received.\n  function liquidate(uint256 maxAmount, uint256 minBaseOut) external returns (uint256 liquidated, uint256 baseOut);\n}\n"},{"file_path":"project/contracts/v2/interfaces/IFxFractionalTokenV2.sol","source_code":"// SPDX-License-Identifier: MIT\n\npragma solidity ^0.8.0;\n\ninterface IFxFractionalTokenV2 {\n  /**********\n   * Errors *\n   **********/\n\n  /// @dev Thrown when caller is not treasury contract.\n  error ErrorCallerIsNotTreasury();\n\n  /*************************\n   * Public View Functions *\n   *************************/\n\n  /// @notice Return the net asset value for the token, multiplied by 1e18.\n  function nav() external view returns (uint256);\n\n  /****************************\n   * Public Mutated Functions *\n   ****************************/\n\n  /// @notice Mint some token to someone.\n  /// @param to The address of recipient.\n  /// @param amount The amount of token to mint.\n  function mint(address to, uint256 amount) external;\n\n  /// @notice Burn some token from someone.\n  /// @param from The address of owner to burn.\n  /// @param amount The amount of token to burn.\n  function burn(address from, uint256 amount) external;\n}\n"},{"file_path":"project/contracts/v2/interfaces/IFxMarketV2.sol","source_code":"// SPDX-License-Identifier: MIT\n\npragma solidity ^0.8.0;\n\ninterface IFxMarketV2 {\n  /**********\n   * Events *\n   **********/\n\n  /// @notice Emitted when fToken is minted.\n  /// @param owner The address of base token owner.\n  /// @param recipient The address of receiver for fToken or xToken.\n  /// @param baseTokenIn The amount of base token deposited.\n  /// @param fTokenOut The amount of fToken minted.\n  /// @param mintFee The amount of mint fee charged.\n  event MintFToken(\n    address indexed owner,\n    address indexed recipient,\n    uint256 baseTokenIn,\n    uint256 fTokenOut,\n    uint256 mintFee\n  );\n\n  /// @notice Emitted when xToken is minted.\n  /// @param owner The address of base token owner.\n  /// @param recipient The address of receiver for fToken or xToken.\n  /// @param baseTokenIn The amount of base token deposited.\n  /// @param xTokenOut The amount of xToken minted.\n  /// @param bonus The amount of base token as bonus.\n  /// @param mintFee The amount of mint fee charged.\n  event MintXToken(\n    address indexed owner,\n    address indexed recipient,\n    uint256 baseTokenIn,\n    uint256 xTokenOut,\n    uint256 bonus,\n    uint256 mintFee\n  );\n\n  /// @notice Emitted when someone redeem base token with fToken or xToken.\n  /// @param owner The address of fToken and xToken owner.\n  /// @param recipient The address of receiver for base token.\n  /// @param fTokenBurned The amount of fToken burned.\n  /// @param baseTokenOut The amount of base token redeemed.\n  /// @param bonus The amount of base token as bonus.\n  /// @param redeemFee The amount of redeem fee charged.\n  event RedeemFToken(\n    address indexed owner,\n    address indexed recipient,\n    uint256 fTokenBurned,\n    uint256 baseTokenOut,\n    uint256 bonus,\n    uint256 redeemFee\n  );\n\n  /// @notice Emitted when someone redeem base token with fToken or xToken.\n  /// @param owner The address of fToken and xToken owner.\n  /// @param recipient The address of receiver for base token.\n  /// @param xTokenBurned The amount of xToken burned.\n  /// @param baseTokenOut The amount of base token redeemed.\n  /// @param redeemFee The amount of redeem fee charged.\n  event RedeemXToken(\n    address indexed owner,\n    address indexed recipient,\n    uint256 xTokenBurned,\n    uint256 baseTokenOut,\n    uint256 redeemFee\n  );\n\n  /// @notice Emitted when the fee ratio for minting fToken is updated.\n  /// @param defaultFeeRatio The new default fee ratio, multipled by 1e18.\n  /// @param extraFeeRatio The new extra fee ratio, multipled by 1e18.\n  event UpdateMintFeeRatioFToken(uint256 defaultFeeRatio, int256 extraFeeRatio);\n\n  /// @notice Emitted when the fee ratio for minting xToken is updated.\n  /// @param defaultFeeRatio The new default fee ratio, multipled by 1e18.\n  /// @param extraFeeRatio The new extra fee ratio, multipled by 1e18.\n  event UpdateMintFeeRatioXToken(uint256 defaultFeeRatio, int256 extraFeeRatio);\n\n  /// @notice Emitted when the fee ratio for redeeming fToken is updated.\n  /// @param defaultFeeRatio The new default fee ratio, multipled by 1e18.\n  /// @param extraFeeRatio The new extra fee ratio, multipled by 1e18.\n  event UpdateRedeemFeeRatioFToken(uint256 defaultFeeRatio, int256 extraFeeRatio);\n\n  /// @notice Emitted when the fee ratio for redeeming xToken is updated.\n  /// @param defaultFeeRatio The new default fee ratio, multipled by 1e18.\n  /// @param extraFeeRatio The new extra fee ratio, multipled by 1e18.\n  event UpdateRedeemFeeRatioXToken(uint256 defaultFeeRatio, int256 extraFeeRatio);\n\n  /// @notice Emitted when the stability ratio is updated.\n  /// @param oldRatio The previous collateral ratio to enter stability mode, multiplied by 1e18.\n  /// @param newRatio The current collateral ratio to enter stability mode, multiplied by 1e18.\n  event UpdateStabilityRatio(uint256 oldRatio, uint256 newRatio);\n\n  /// @notice Emitted when the platform contract is updated.\n  /// @param oldPlatform The address of previous platform contract.\n  /// @param newPlatform The address of current platform contract.\n  event UpdatePlatform(address indexed oldPlatform, address indexed newPlatform);\n\n  /// @notice Emitted when the  reserve pool contract is updated.\n  /// @param oldReservePool The address of previous reserve pool contract.\n  /// @param newReservePool The address of current reserve pool contract.\n  event UpdateReservePool(address indexed oldReservePool, address indexed newReservePool);\n\n  /// @notice Emitted when the RebalancePoolRegistry contract is updated.\n  /// @param oldRegistry The address of previous RebalancePoolRegistry contract.\n  /// @param newRegistry The address of current RebalancePoolRegistry contract.\n  event UpdateRebalancePoolRegistry(address indexed oldRegistry, address indexed newRegistry);\n\n  /// @notice Pause or unpause mint.\n  /// @param oldStatus The previous status for mint.\n  /// @param newStatus The current status for mint.\n  event UpdateMintStatus(bool oldStatus, bool newStatus);\n\n  /// @notice Pause or unpause redeem.\n  /// @param oldStatus The previous status for redeem.\n  /// @param newStatus The current status for redeem.\n  event UpdateRedeemStatus(bool oldStatus, bool newStatus);\n\n  /// @notice Pause or unpause fToken mint in stability mode.\n  /// @param oldStatus The previous status for mint.\n  /// @param newStatus The current status for mint.\n  event UpdateFTokenMintStatusInStabilityMode(bool oldStatus, bool newStatus);\n\n  /// @notice Pause or unpause xToken redeem in stability mode.\n  /// @param oldStatus The previous status for redeem.\n  /// @param newStatus The current status for redeem.\n  event UpdateXTokenRedeemStatusInStabilityMode(bool oldStatus, bool newStatus);\n\n  /**********\n   * Errors *\n   **********/\n\n  /// @dev Thrown when the caller if not fUSD contract.\n  error ErrorCallerNotFUSD();\n\n  /// @dev Thrown when token mint is paused.\n  error ErrorMintPaused();\n\n  /// @dev Thrown when fToken mint is paused in stability mode.\n  error ErrorFTokenMintPausedInStabilityMode();\n\n  /// @dev Thrown when mint with zero amount base token.\n  error ErrorMintZeroAmount();\n\n  /// @dev Thrown when the amount of fToken is not enough.\n  error ErrorInsufficientFTokenOutput();\n\n  /// @dev Thrown when the amount of xToken is not enough.\n  error ErrorInsufficientXTokenOutput();\n\n  /// @dev Thrown when token redeem is paused.\n  error ErrorRedeemPaused();\n\n  /// @dev Thrown when xToken redeem is paused in stability mode.\n  error ErrorXTokenRedeemPausedInStabilityMode();\n\n  /// @dev Thrown when redeem with zero amount fToken or xToken.\n  error ErrorRedeemZeroAmount();\n\n  /// @dev Thrown when the amount of base token is not enough.\n  error ErrorInsufficientBaseOutput();\n\n  /// @dev Thrown when the stability ratio is too large.\n  error ErrorStabilityRatioTooLarge();\n\n  /// @dev Thrown when the default fee is too large.\n  error ErrorDefaultFeeTooLarge();\n\n  /// @dev Thrown when the delta fee is too small.\n  error ErrorDeltaFeeTooSmall();\n\n  /// @dev Thrown when the sum of default fee and delta fee is too large.\n  error ErrorTotalFeeTooLarge();\n\n  /// @dev Thrown when the given address is zero.\n  error ErrorZeroAddress();\n\n  /*************************\n   * Public View Functions *\n   *************************/\n\n  /// @notice The address of Treasury contract.\n  function treasury() external view returns (address);\n\n  /// @notice Return the address of base token.\n  function baseToken() external view returns (address);\n\n  /// @notice Return the address fractional base token.\n  function fToken() external view returns (address);\n\n  /// @notice Return the address leveraged base token.\n  function xToken() external view returns (address);\n\n  /// @notice Return the address of fxUSD token.\n  function fxUSD() external view returns (address);\n\n  /// @notice Return the collateral ratio to enter stability mode, multiplied by 1e18.\n  function stabilityRatio() external view returns (uint256);\n\n  /****************************\n   * Public Mutated Functions *\n   ****************************/\n\n  /// @notice Mint some fToken with some base token.\n  /// @param baseIn The amount of wrapped value of base token supplied, use `uint256(-1)` to supply all base token.\n  /// @param recipient The address of receiver for fToken.\n  /// @param minFTokenMinted The minimum amount of fToken should be received.\n  /// @return fTokenMinted The amount of fToken should be received.\n  function mintFToken(\n    uint256 baseIn,\n    address recipient,\n    uint256 minFTokenMinted\n  ) external returns (uint256 fTokenMinted);\n\n  /// @notice Mint some xToken with some base token.\n  /// @param baseIn The amount of wrapped value of base token supplied, use `uint256(-1)` to supply all base token.\n  /// @param recipient The address of receiver for xToken.\n  /// @param minXTokenMinted The minimum amount of xToken should be received.\n  /// @return xTokenMinted The amount of xToken should be received.\n  /// @return bonus The amount of wrapped value of base token as bonus.\n  function mintXToken(\n    uint256 baseIn,\n    address recipient,\n    uint256 minXTokenMinted\n  ) external returns (uint256 xTokenMinted, uint256 bonus);\n\n  /// @notice Redeem base token with fToken.\n  /// @param fTokenIn the amount of fToken to redeem, use `uint256(-1)` to redeem all fToken.\n  /// @param recipient The address of receiver for base token.\n  /// @param minBaseOut The minimum amount of wrapped value of base token should be received.\n  /// @return baseOut The amount of wrapped value of base token should be received.\n  /// @return bonus The amount of wrapped value of base token as bonus.\n  function redeemFToken(\n    uint256 fTokenIn,\n    address recipient,\n    uint256 minBaseOut\n  ) external returns (uint256 baseOut, uint256 bonus);\n\n  /// @notice Redeem base token with xToken.\n  /// @param xTokenIn the amount of xToken to redeem, use `uint256(-1)` to redeem all xToken.\n  /// @param recipient The address of receiver for base token.\n  /// @param minBaseOut The minimum amount of wrapped value of base token should be received.\n  /// @return baseOut The amount of wrapped value of base token should be received.\n  function redeemXToken(\n    uint256 xTokenIn,\n    address recipient,\n    uint256 minBaseOut\n  ) external returns (uint256 baseOut);\n}\n"},{"file_path":"project/contracts/v2/interfaces/IFxShareableRebalancePool.sol","source_code":"// SPDX-License-Identifier: MIT\n\npragma solidity ^0.8.0;\n\nimport { IFxBoostableRebalancePool } from \"./IFxBoostableRebalancePool.sol\";\n\ninterface IFxShareableRebalancePool is IFxBoostableRebalancePool {\n  /**********\n   * Events *\n   **********/\n\n  /// @notice Emitted when one user share votes to another user.\n  /// @param owner The address of votes owner.\n  /// @param staker The address of staker to share votes.\n  event ShareVote(address indexed owner, address indexed staker);\n\n  /// @notice Emitted when the owner cancel sharing to some staker.\n  /// @param owner The address of votes owner.\n  /// @param staker The address of staker to cancel votes share.\n  event CancelShareVote(address indexed owner, address indexed staker);\n\n  /// @notice Emitted when staker accept the vote sharing.\n  /// @param staker The address of the staker.\n  /// @param oldOwner The address of the previous vote sharing owner.\n  /// @param newOwner The address of the current vote sharing owner.\n  event AcceptSharedVote(address indexed staker, address indexed oldOwner, address indexed newOwner);\n\n  /**********\n   * Errors *\n   **********/\n\n  /// @dev Thrown when caller shares votes to self.\n  error ErrorSelfSharingIsNotAllowed();\n\n  /// @dev Thrown when a staker with shared votes try to share its votes to others.\n  error ErrorCascadedSharingIsNotAllowed();\n\n  /// @dev Thrown when staker try to accept non-allowed vote sharing.\n  error ErrorVoteShareNotAllowed();\n\n  /// @dev Thrown when staker try to reject a non-existed vote sharing.\n  error ErrorNoAcceptedSharedVote();\n\n  /// @dev Thrown when the staker has ability to share ve balance.\n  error ErrorVoteOwnerCannotStake();\n\n  /// @dev Thrown when staker try to accept twice.\n  error ErrorRepeatAcceptSharedVote();\n\n  /*************************\n   * Public View Functions *\n   *************************/\n\n  /// @notice Return the owner of votes of some staker.\n  /// @param account The address of user to query.\n  function getStakerVoteOwner(address account) external view returns (address);\n\n  /****************************\n   * Public Mutated Functions *\n   ****************************/\n\n  /// @notice Withdraw asset from this contract on behalf of someone\n  function withdrawFrom(\n    address owner,\n    uint256 amount,\n    address receiver\n  ) external;\n\n  /// @notice Owner changes the vote sharing state for some user.\n  /// @param staker The address of user to change.\n  function toggleVoteSharing(address staker) external;\n\n  /// @notice Staker accepts the vote sharing.\n  /// @param newOwner The address of the owner of the votes.\n  function acceptSharedVote(address newOwner) external;\n\n  /// @notice Staker reject the current vote sharing.\n  function rejectSharedVote() external;\n}\n"},{"file_path":"project/contracts/v2/interfaces/IFxTreasuryV2.sol","source_code":"// SPDX-License-Identifier: MIT\n\npragma solidity ^0.8.0;\n\ninterface IFxTreasuryV2 {\n  /**********\n   * Events *\n   **********/\n\n  /// @notice Emitted when the platform contract is updated.\n  /// @param oldPlatform The address of previous platform contract.\n  /// @param newPlatform The address of current platform contract.\n  event UpdatePlatform(address indexed oldPlatform, address indexed newPlatform);\n\n  /// @notice Emitted when the RebalancePoolSplitter contract is updated.\n  /// @param oldRebalancePoolSplitter The address of previous RebalancePoolSplitter contract.\n  /// @param newRebalancePoolSplitter The address of current RebalancePoolSplitter.\n  event UpdateRebalancePoolSplitter(address indexed oldRebalancePoolSplitter, address indexed newRebalancePoolSplitter);\n\n  /// @notice Emitted when the price oracle contract is updated.\n  /// @param oldPriceOracle The address of previous price oracle.\n  /// @param newPriceOracle The address of current price oracle.\n  event UpdatePriceOracle(address indexed oldPriceOracle, address indexed newPriceOracle);\n\n  /// @notice Emitted when the strategy contract is updated.\n  /// @param oldStrategy The address of previous strategy.\n  /// @param newStrategy The address of current strategy.\n  event UpdateStrategy(address indexed oldStrategy, address indexed newStrategy);\n\n  /// @notice Emitted when the base token cap is updated.\n  /// @param oldBaseTokenCap The value of previous base token cap.\n  /// @param newBaseTokenCap The value of current base token cap.\n  event UpdateBaseTokenCap(uint256 oldBaseTokenCap, uint256 newBaseTokenCap);\n\n  /// @notice Emitted when the EMA sample interval is updated.\n  /// @param oldSampleInterval The value of previous EMA sample interval.\n  /// @param newSampleInterval The value of current EMA sample interval.\n  event UpdateEMASampleInterval(uint256 oldSampleInterval, uint256 newSampleInterval);\n\n  /// @notice Emitted when the reference price is updated.\n  /// @param oldPrice The value of previous reference price.\n  /// @param newPrice The value of current reference price.\n  event Settle(uint256 oldPrice, uint256 newPrice);\n\n  /// @notice Emitted when the ratio for rebalance pool is updated.\n  /// @param oldRatio The value of the previous ratio, multiplied by 1e9.\n  /// @param newRatio The value of the current ratio, multiplied by 1e9.\n  event UpdateRebalancePoolRatio(uint256 oldRatio, uint256 newRatio);\n\n  /// @notice Emitted when the ratio for harvester is updated.\n  /// @param oldRatio The value of the previous ratio, multiplied by 1e9.\n  /// @param newRatio The value of the current ratio, multiplied by 1e9.\n  event UpdateHarvesterRatio(uint256 oldRatio, uint256 newRatio);\n\n  /// @notice Emitted when someone harvest pending stETH rewards.\n  /// @param caller The address of caller.\n  /// @param totalRewards The amount of total harvested rewards.\n  /// @param rebalancePoolRewards The amount of harvested rewards distributed to stability pool.\n  /// @param harvestBounty The amount of harvested rewards distributed to caller as harvest bounty.\n  event Harvest(address indexed caller, uint256 totalRewards, uint256 rebalancePoolRewards, uint256 harvestBounty);\n\n  /**********\n   * Errors *\n   **********/\n\n  /// @dev Thrown when the collateral ratio is smaller than 100%.\n  error ErrorCollateralRatioTooSmall();\n\n  /// @dev Thrown when mint exceed total capacity.\n  error ErrorExceedTotalCap();\n\n  /// @dev Thrown when the oracle price is invalid.\n  error ErrorInvalidOraclePrice();\n\n  /// @dev Thrown when the twap price is invalid.\n  error ErrorInvalidTwapPrice();\n\n  /// @dev Thrown when initialize protocol twice.\n  error ErrorProtocolInitialized();\n\n  /// @dev Thrown when the initial amount of base token is not enough.\n  error ErrorInsufficientInitialBaseToken();\n\n  /// @dev Thrown when current is under collateral.\n  error ErrorUnderCollateral();\n\n  /// @dev Thrown when the sample internal for EMA is too small.\n  error ErrorEMASampleIntervalTooSmall();\n\n  /// @dev Thrown when the expense ratio exceeds `MAX_REBALANCE_POOL_RATIO`.\n  error ErrorRebalancePoolRatioTooLarge();\n\n  /// @dev Thrown when the harvester ratio exceeds `MAX_HARVESTER_RATIO`.\n  error ErrorHarvesterRatioTooLarge();\n\n  /// @dev Thrown when the given address is zero.\n  error ErrorZeroAddress();\n\n  /*********\n   * Enums *\n   *********/\n\n  enum Action {\n    None,\n    MintFToken,\n    MintXToken,\n    RedeemFToken,\n    RedeemXToken\n  }\n\n  /*************************\n   * Public View Functions *\n   *************************/\n\n  /// @notice Return the address of price oracle contract.\n  function priceOracle() external view returns (address);\n\n  /// @notice Return the address of base token.\n  function baseToken() external view returns (address);\n\n  /// @notice Return the address fractional base token.\n  function fToken() external view returns (address);\n\n  /// @notice Return the address leveraged base token.\n  function xToken() external view returns (address);\n\n  /// @notice The reference base token price.\n  function referenceBaseTokenPrice() external view returns (uint256);\n\n  /// @notice The current base token price.\n  function currentBaseTokenPrice() external view returns (uint256);\n\n  /// @notice Return whether the price is valid.\n  function isBaseTokenPriceValid() external view returns (bool);\n\n  /// @notice Return the total amount of underlying value of base token deposited.\n  function totalBaseToken() external view returns (uint256);\n\n  /// @notice Return the address of strategy contract.\n  function strategy() external view returns (address);\n\n  /// @notice Return the total amount of base token managed by strategy.\n  function strategyUnderlying() external view returns (uint256);\n\n  /// @notice Return the current collateral ratio of fToken, multiplied by 1e18.\n  function collateralRatio() external view returns (uint256);\n\n  /// @notice Return whether the system is under collateral.\n  function isUnderCollateral() external view returns (bool);\n\n  /// @notice Compute the amount of base token needed to reach the new collateral ratio.\n  /// @param newCollateralRatio The target collateral ratio, multiplied by 1e18.\n  /// @return maxBaseIn The amount of underlying value of base token needed.\n  /// @return maxFTokenMintable The amount of fToken can be minted.\n  function maxMintableFToken(uint256 newCollateralRatio)\n    external\n    view\n    returns (uint256 maxBaseIn, uint256 maxFTokenMintable);\n\n  /// @notice Compute the amount of base token needed to reach the new collateral ratio.\n  /// @param newCollateralRatio The target collateral ratio, multiplied by 1e18.\n  /// @return maxBaseIn The amount of underlying value of base token needed.\n  /// @return maxXTokenMintable The amount of xToken can be minted.\n  function maxMintableXToken(uint256 newCollateralRatio)\n    external\n    view\n    returns (uint256 maxBaseIn, uint256 maxXTokenMintable);\n\n  /// @notice Compute the amount of fToken needed to reach the new collateral ratio.\n  /// @param newCollateralRatio The target collateral ratio, multiplied by 1e18.\n  /// @return maxBaseOut The amount of underlying value of base token redeemed.\n  /// @return maxFTokenRedeemable The amount of fToken needed.\n  function maxRedeemableFToken(uint256 newCollateralRatio)\n    external\n    view\n    returns (uint256 maxBaseOut, uint256 maxFTokenRedeemable);\n\n  /// @notice Compute the amount of xToken needed to reach the new collateral ratio.\n  /// @param newCollateralRatio The target collateral ratio, multiplied by 1e18.\n  /// @return maxBaseOut The amount of underlying value of base token redeemed.\n  /// @return maxXTokenRedeemable The amount of xToken needed.\n  function maxRedeemableXToken(uint256 newCollateralRatio)\n    external\n    view\n    returns (uint256 maxBaseOut, uint256 maxXTokenRedeemable);\n\n  /// @notice Return the exponential moving average of the leverage ratio.\n  function leverageRatio() external view returns (uint256);\n\n  /// @notice Convert underlying token amount to wrapped token amount.\n  /// @param amount The underlying token amount.\n  function getWrapppedValue(uint256 amount) external view returns (uint256);\n\n  /// @notice Convert wrapped token amount to underlying token amount.\n  /// @param amount The wrapped token amount.\n  function getUnderlyingValue(uint256 amount) external view returns (uint256);\n\n  /// @notice Return the fee ratio distributed to rebalance pool, multiplied by 1e9.\n  function getRebalancePoolRatio() external view returns (uint256);\n\n  /// @notice Return the fee ratio distributed to harvester, multiplied by 1e9.\n  function getHarvesterRatio() external view returns (uint256);\n\n  /****************************\n   * Public Mutated Functions *\n   ****************************/\n\n  /// @notice Initialize the protocol.\n  /// @param baseIn The amount of underlying value of the base token used to initialize.\n  function initializeProtocol(uint256 baseIn) external returns (uint256 fTokenOut, uint256 xTokenOut);\n\n  /// @notice Mint fToken with some base token.\n  /// @param baseIn The amount of underlying value of base token deposited.\n  /// @param recipient The address of receiver.\n  /// @return fTokenOut The amount of fToken minted.\n  function mintFToken(uint256 baseIn, address recipient) external returns (uint256 fTokenOut);\n\n  /// @notice Mint xToken with some base token.\n  /// @param baseIn The amount of underlying value of base token deposited.\n  /// @param recipient The address of receiver.\n  /// @return xTokenOut The amount of xToken minted.\n  function mintXToken(uint256 baseIn, address recipient) external returns (uint256 xTokenOut);\n\n  /// @notice Redeem fToken and xToken to base token.\n  /// @param fTokenIn The amount of fToken to redeem.\n  /// @param xTokenIn The amount of xToken to redeem.\n  /// @param owner The owner of the fToken or xToken.\n  /// @param baseOut The amount of underlying value of base token redeemed.\n  function redeem(\n    uint256 fTokenIn,\n    uint256 xTokenIn,\n    address owner\n  ) external returns (uint256 baseOut);\n\n  /// @notice Settle the nav of base token, fToken and xToken.\n  function settle() external;\n\n  /// @notice Transfer some base token to strategy contract.\n  /// @param amount The amount of token to transfer.\n  function transferToStrategy(uint256 amount) external;\n\n  /// @notice Notify base token profit from strategy contract.\n  /// @param amount The amount of base token.\n  function notifyStrategyProfit(uint256 amount) external;\n\n  /// @notice Harvest pending rewards to stability pool.\n  function harvest() external;\n}\n"},{"file_path":"project/contracts/v2/interfaces/IFxUSD.sol","source_code":"// SPDX-License-Identifier: MIT\n\npragma solidity ^0.8.0;\n\ninterface IFxUSD {\n  /**********\n   * Events *\n   **********/\n\n  /// @notice Emitted when a new market is added.\n  /// @param baseToken The address of base token of the market.\n  /// @param mintCap The mint capacity of the market.\n  event AddMarket(address indexed baseToken, uint256 mintCap);\n\n  /// @notice Emitted when the mint capacity is updated.\n  /// @param baseToken The address of base token of the market.\n  /// @param oldCap The value of previous mint capacity.\n  /// @param newCap The value of current mint capacity.\n  event UpdateMintCap(address indexed baseToken, uint256 oldCap, uint256 newCap);\n\n  /// @notice Emitted when a new rebalance pool is added.\n  /// @param baseToken The address of base token of the market.\n  /// @param pool The address of the rebalance pool.\n  event AddRebalancePool(address indexed baseToken, address indexed pool);\n\n  /// @notice Emitted when a new rebalance pool is removed.\n  /// @param baseToken The address of base token of the market.\n  /// @param pool The address of the rebalance pool.\n  event RemoveRebalancePool(address indexed baseToken, address indexed pool);\n\n  /// @notice Emitted when someone wrap fToken as fxUSD.\n  /// @param baseToken The address of base token of the market.\n  /// @param owner The address of fToken owner.\n  /// @param receiver The address of fxUSD recipient.\n  /// @param amount The amount of fxUSD minted.\n  event Wrap(address indexed baseToken, address indexed owner, address indexed receiver, uint256 amount);\n\n  /// @notice Emitted when someone unwrap fxUSD as fToken.\n  /// @param baseToken The address of base token of the market.\n  /// @param owner The address of fxUSD owner.\n  /// @param receiver The address of base token recipient.\n  /// @param amount The amount of fxUSD burned.\n  event Unwrap(address indexed baseToken, address indexed owner, address indexed receiver, uint256 amount);\n\n  /**********\n   * Errors *\n   **********/\n\n  /// @dev Thrown when someone tries to interact with unsupported market.\n  error ErrorUnsupportedMarket();\n\n  /// @dev Thrown when someone tries to interact with unsupported rebalance pool.\n  error ErrorUnsupportedRebalancePool();\n\n  /// @dev Thrown when someone tries to interact with market in stability mode.\n  error ErrorMarketInStabilityMode();\n\n  /// @dev Thrown when someone tries to interact with market has invalid price.\n  error ErrorMarketWithInvalidPrice();\n\n  /// @dev Thrown when someone tries to add a supported market.\n  error ErrorMarketAlreadySupported();\n\n  /// @dev Thrown when the total supply of fToken exceed mint capacity.\n  error ErrorExceedMintCap();\n\n  /// @dev Thrown when the amount of fToken is not enough for redeem.\n  error ErrorInsufficientLiquidity();\n\n  /// @dev Thrown when current is under collateral.\n  error ErrorUnderCollateral();\n\n  /// @dev Thrown when the length of two arrays is mismatch.\n  error ErrorLengthMismatch();\n\n  /*************************\n   * Public View Functions *\n   *************************/\n\n  /// @notice Return the list of supported markets.\n  function getMarkets() external view returns (address[] memory);\n\n  /// @notice Return the list of supported rebalance pools.\n  function getRebalancePools() external view returns (address[] memory);\n\n  /// @notice Return the nav of fxUSD.\n  function nav() external view returns (uint256);\n\n  /// @notice Return whether the system is under collateral.\n  function isUnderCollateral() external view returns (bool);\n\n  /****************************\n   * Public Mutated Functions *\n   ****************************/\n\n  /// @notice Wrap fToken to fxUSD.\n  /// @param baseToken The address of corresponding base token.\n  /// @param amount The amount of fToken to wrap.\n  /// @param receiver The address of fxUSD recipient.\n  function wrap(\n    address baseToken,\n    uint256 amount,\n    address receiver\n  ) external;\n\n  /// @notice Unwrap fxUSD to fToken.\n  /// @param baseToken The address of corresponding base token.\n  /// @param amount The amount of fxUSD to unwrap.\n  /// @param receiver The address of fToken recipient.\n  function unwrap(\n    address baseToken,\n    uint256 amount,\n    address receiver\n  ) external;\n\n  /// @notice Wrap fToken from rebalance pool to fxUSD.\n  /// @param pool The address of rebalance pool.\n  /// @param amount The amount of fToken to wrap.\n  /// @param receiver The address of fxUSD recipient.\n  function wrapFrom(\n    address pool,\n    uint256 amount,\n    address receiver\n  ) external;\n\n  /// @notice Mint fxUSD with base token.\n  /// @param baseToken The address of the base token.\n  /// @param amountIn The amount of base token to use.\n  /// @param receiver The address of fxUSD recipient.\n  /// @param minOut The minimum amount of fxUSD should receive.\n  /// @return amountOut The amount of fxUSD received by the receiver.\n  function mint(\n    address baseToken,\n    uint256 amountIn,\n    address receiver,\n    uint256 minOut\n  ) external returns (uint256 amountOut);\n\n  /// @notice Deposit fxUSD to rebalance pool.\n  /// @param pool The address of rebalance pool.\n  /// @param amount The amount of fxUSD to use.\n  /// @param receiver The address of rebalance pool share recipient.\n  function earn(\n    address pool,\n    uint256 amount,\n    address receiver\n  ) external;\n\n  /// @notice Mint fxUSD with base token and deposit to rebalance pool.\n  /// @param pool The address of rebalance pool.\n  /// @param amountIn The amount of base token to use.\n  /// @param receiver The address of rebalance pool recipient.\n  /// @param minOut The minimum amount of rebalance pool shares should receive.\n  /// @return amountOut The amount of rebalance pool shares received by the receiver.\n  function mintAndEarn(\n    address pool,\n    uint256 amountIn,\n    address receiver,\n    uint256 minOut\n  ) external returns (uint256 amountOut);\n\n  /// @notice Redeem fxUSD to base token.\n  /// @param baseToken The address of the base token.\n  /// @param amountIn The amount of fxUSD to redeem.\n  /// @param receiver The address of base token recipient.\n  /// @param minOut The minimum amount of base token should receive.\n  /// @return amountOut The amount of base token received by the receiver.\n  /// @return bonusOut The amount of bonus base token received by the receiver.\n  function redeem(\n    address baseToken,\n    uint256 amountIn,\n    address receiver,\n    uint256 minOut\n  ) external returns (uint256 amountOut, uint256 bonusOut);\n\n  /// @notice Redeem fToken from rebalance pool to base token.\n  /// @param amountIn The amount of fxUSD to redeem.\n  /// @param receiver The address of base token recipient.\n  /// @param minOut The minimum amount of base token should receive.\n  /// @return amountOut The amount of base token received by the receiver.\n  /// @return bonusOut The amount of bonus base token received by the receiver.\n  function redeemFrom(\n    address pool,\n    uint256 amountIn,\n    address receiver,\n    uint256 minOut\n  ) external returns (uint256 amountOut, uint256 bonusOut);\n\n  /// @notice Redeem fxUSD to base token optimally.\n  /// @param amountIn The amount of fxUSD to redeem.\n  /// @param receiver The address of base token recipient.\n  /// @param minOuts The list of minimum amount of base token should receive.\n  /// @return baseTokens The list of base token received by the receiver.\n  /// @return amountOuts The list of amount of base token received by the receiver.\n  /// @return bonusOuts The list of amount of bonus base token received by the receiver.\n  function autoRedeem(\n    uint256 amountIn,\n    address receiver,\n    uint256[] memory minOuts\n  )\n    external\n    returns (\n      address[] memory baseTokens,\n      uint256[] memory amountOuts,\n      uint256[] memory bonusOuts\n    );\n}\n"}],"certified":false,"conflicting_implementations":null,"abi":[{"inputs":[{"internalType":"address","name":"_poolManager","type":"address"},{"internalType":"address","name":"_stableToken","type":"address"},{"internalType":"address","name":"_pegKeeper","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"inputs":[],"name":"ErrorCallerNotPegKeeper","type":"error"},{"inputs":[],"name":"ErrorCallerNotPoolManager","type":"error"},{"inputs":[],"name":"ErrorExceedMintCap","type":"error"},{"inputs":[],"name":"ErrorExceedStableReserve","type":"error"},{"inputs":[],"name":"ErrorInsufficientBuyBack","type":"error"},{"inputs":[],"name":"ErrorInsufficientLiquidity","type":"error"},{"inputs":[],"name":"ErrorInsufficientOutput","type":"error"},{"inputs":[],"name":"ErrorLengthMismatch","type":"error"},{"inputs":[],"name":"ErrorMarketAlreadySupported","type":"error"},{"inputs":[],"name":"ErrorMarketInStabilityMode","type":"error"},{"inputs":[],"name":"ErrorMarketWithInvalidPrice","type":"error"},{"inputs":[],"name":"ErrorUnderCollateral","type":"error"},{"inputs":[],"name":"ErrorUnsupportedMarket","type":"error"},{"inputs":[],"name":"ErrorUnsupportedRebalancePool","type":"error"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"baseToken","type":"address"},{"indexed":false,"internalType":"uint256","name":"mintCap","type":"uint256"}],"name":"AddMarket","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"baseToken","type":"address"},{"indexed":true,"internalType":"address","name":"pool","type":"address"}],"name":"AddRebalancePool","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"owner","type":"address"},{"indexed":true,"internalType":"address","name":"spender","type":"address"},{"indexed":false,"internalType":"uint256","name":"value","type":"uint256"}],"name":"Approval","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint256","name":"amountStable","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"amountFxUSD","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"bonusFxUSD","type":"uint256"}],"name":"Buyback","type":"event"},{"anonymous":false,"inputs":[],"name":"EIP712DomainChanged","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint8","name":"version","type":"uint8"}],"name":"Initialized","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint256","name":"amountStable","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"amountFxUSD","type":"uint256"}],"name":"RebalanceWithStable","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"baseToken","type":"address"},{"indexed":true,"internalType":"address","name":"pool","type":"address"}],"name":"RemoveRebalancePool","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"bytes32","name":"role","type":"bytes32"},{"indexed":true,"internalType":"bytes32","name":"previousAdminRole","type":"bytes32"},{"indexed":true,"internalType":"bytes32","name":"newAdminRole","type":"bytes32"}],"name":"RoleAdminChanged","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"bytes32","name":"role","type":"bytes32"},{"indexed":true,"internalType":"address","name":"account","type":"address"},{"indexed":true,"internalType":"address","name":"sender","type":"address"}],"name":"RoleGranted","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"bytes32","name":"role","type":"bytes32"},{"indexed":true,"internalType":"address","name":"account","type":"address"},{"indexed":true,"internalType":"address","name":"sender","type":"address"}],"name":"RoleRevoked","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"from","type":"address"},{"indexed":true,"internalType":"address","name":"to","type":"address"},{"indexed":false,"internalType":"uint256","name":"value","type":"uint256"}],"name":"Transfer","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"baseToken","type":"address"},{"indexed":true,"internalType":"address","name":"owner","type":"address"},{"indexed":true,"internalType":"address","name":"receiver","type":"address"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"}],"name":"Unwrap","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"baseToken","type":"address"},{"indexed":false,"internalType":"uint256","name":"oldCap","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"newCap","type":"uint256"}],"name":"UpdateMintCap","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"baseToken","type":"address"},{"indexed":true,"internalType":"address","name":"owner","type":"address"},{"indexed":true,"internalType":"address","name"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