organized_contracts/13/1308a59555f4c09afca15911d7958cf0df80908ed7f4724bee7082d09be25fb5/contract.json

{
  "language": "Solidity",
  "sources": {
    "contracts/adapters/yearn/YearnWrapper.sol": {
      "content": "// SPDX-License-Identifier: AGPL-3.0\r\n\r\npragma solidity ^0.8.12;\r\n\r\nimport \"@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol\";\r\nimport \"@openzeppelin/contracts/access/Ownable.sol\";\r\nimport \"@openzeppelin/contracts/security/ReentrancyGuard.sol\";\r\nimport {ERC20} from \"@openzeppelin/contracts/token/ERC20/ERC20.sol\";\r\nimport {Math} from \"@openzeppelin/contracts/utils/math/Math.sol\";\r\n\r\nimport \"../../interfaces/adapters/yearn/IVaultWrapper.sol\";\r\nimport {VaultAPI, IYearnRegistry} from \"../../interfaces/adapters/yearn/VaultAPI.sol\";\r\nimport \"../../interfaces/IERC4626.sol\";\r\nimport {FixedPointMathLib} from \"../../lib/FixedPointMathLib.sol\";\r\n\r\n/**\r\n * @author RobAnon\r\n * @author 0xTraub\r\n * @author 0xTinder\r\n * @notice a contract for providing Yearn V2 contracts with an ERC-4626-compliant interface\r\n *         Developed for Resonate.\r\n * @dev The initial deposit to this contract should be made immediately following deployment\r\n */\r\ncontract YearnWrapper is ERC20, IVaultWrapper, IERC4626, Ownable, ReentrancyGuard {\r\n\r\n    using FixedPointMathLib for uint;\r\n    using SafeERC20 for IERC20;\r\n\r\n    /// NB: If this is deployed on non-Mainnet chains\r\n    ///     Then this address may be different\r\n    IYearnRegistry public registry = IYearnRegistry(0x50c1a2eA0a861A967D9d0FFE2AE4012c2E053804);\r\n\r\n    VaultAPI public yVault;\r\n\r\n    address public immutable token;\r\n    /// Decimals for native token\r\n    uint8 public immutable _decimals;\r\n\r\n    /// Necessary to prevent precision manipulation\r\n    uint private constant MIN_DEPOSIT = 1E3;\r\n\r\n    constructor(VaultAPI _vault)\r\n        ERC20(\r\n            string(abi.encodePacked(_vault.name(), \"-4646-Adapter\")),\r\n            string(abi.encodePacked(_vault.symbol(), \"-4646\"))\r\n        )\r\n    {\r\n        yVault = _vault;\r\n        token = yVault.token();\r\n        _decimals = uint8(_vault.decimals());\r\n    }\r\n\r\n    function vault() external view returns (address) {\r\n        return address(yVault);\r\n    }\r\n\r\n    /// @dev Verifies that the yearn registry has \"_target\" recorded as the asset's latest vault\r\n    function migrate(address _target) external onlyOwner returns (address) {\r\n        // verify _target is a valid address\r\n        if(registry.latestVault(token) != _target) {\r\n            revert InvalidMigrationTarget();\r\n        }\r\n\r\n        uint assets = yVault.withdraw(type(uint).max);\r\n        yVault = VaultAPI(_target);\r\n\r\n        // Redeposit want into target vault\r\n        yVault.deposit(assets);\r\n\r\n        return _target;\r\n    }\r\n\r\n    // NB: this number will be different from this token's totalSupply\r\n    function vaultTotalSupply() external view returns (uint256) {\r\n        return yVault.totalSupply();\r\n    }\r\n\r\n    /*//////////////////////////////////////////////////////////////\r\n                      ERC20 compatibility\r\n   //////////////////////////////////////////////////////////////*/\r\n\r\n    function decimals() public view override(ERC20,IERC4626) returns (uint8) {\r\n        return _decimals;\r\n    }\r\n\r\n    function asset() external view override returns (address) {\r\n        return token;\r\n    }\r\n\r\n    /*//////////////////////////////////////////////////////////////\r\n                      DEPOSIT/WITHDRAWAL LOGIC\r\n  //////////////////////////////////////////////////////////////*/\r\n\r\n    function deposit(\r\n        uint256 assets, \r\n        address receiver\r\n    ) public override nonReentrant returns (uint256 shares) {\r\n        if(assets < MIN_DEPOSIT) {\r\n            revert MinimumDepositNotMet();\r\n        }\r\n\r\n        (assets, shares) = _deposit(assets, receiver, msg.sender);\r\n\r\n        emit Deposit(msg.sender, receiver, assets, shares);\r\n    }\r\n\r\n    function mint(\r\n        uint256 shares, \r\n        address receiver\r\n    ) public override nonReentrant returns (uint256 assets) {\r\n        // No need to check for rounding error, previewMint rounds up.\r\n        assets = previewMint(shares); \r\n\r\n        uint expectedShares = shares;\r\n        (assets, shares) = _deposit(assets, receiver, msg.sender);\r\n\r\n        if(assets < MIN_DEPOSIT) {\r\n            revert MinimumDepositNotMet();\r\n        }\r\n\r\n        if(shares != expectedShares) {\r\n            revert NotEnoughAvailableAssetsForAmount();\r\n        }\r\n\r\n        emit Deposit(msg.sender, receiver, assets, shares);\r\n    }\r\n\r\n    function withdraw(\r\n        uint256 assets,\r\n        address receiver,\r\n        address owner\r\n    ) public override nonReentrant returns (uint256 shares) {\r\n        \r\n        if(assets == 0) {\r\n            revert NonZeroArgumentExpected();\r\n        }\r\n\r\n        (assets, shares) = _withdraw(\r\n            assets,\r\n            receiver,\r\n            owner\r\n        );\r\n\r\n        emit Withdraw(msg.sender, receiver, owner, assets, shares);\r\n    }\r\n\r\n    function redeem(\r\n        uint256 shares,\r\n        address receiver,\r\n        address owner\r\n    ) public override nonReentrant returns (uint256 assets) {\r\n        \r\n        if(shares == 0) {\r\n            revert NonZeroArgumentExpected();\r\n        }\r\n\r\n        (assets, shares) = _redeem(\r\n            shares,\r\n            receiver,\r\n            owner\r\n        );\r\n\r\n        emit Withdraw(msg.sender, receiver, owner, assets, shares);\r\n    }\r\n\r\n    /*//////////////////////////////////////////////////////////////\r\n                          ACCOUNTING LOGIC\r\n  //////////////////////////////////////////////////////////////*/\r\n\r\n    function totalAssets() public view override returns (uint256) {\r\n        return convertYearnSharesToAssets(yVault.balanceOf(address(this)));\r\n    }\r\n\r\n    function convertToShares(uint256 assets)\r\n        public\r\n        view\r\n        override\r\n        returns (uint256)\r\n    {\r\n        uint supply = totalSupply();\r\n        uint localAssets = convertYearnSharesToAssets(yVault.balanceOf(address(this)));\r\n        return supply == 0 ? assets : assets.mulDivDown(supply, localAssets); \r\n    }\r\n\r\n    function convertToAssets(uint256 shares)\r\n        public\r\n        view\r\n        override\r\n        returns (uint assets)\r\n    {\r\n        uint supply = totalSupply();\r\n        uint localAssets = convertYearnSharesToAssets(yVault.balanceOf(address(this)));\r\n        return supply == 0 ? shares : shares.mulDivDown(localAssets, supply);\r\n    }\r\n\r\n    function getFreeFunds() public view virtual returns (uint256) {\r\n        uint256 lockedFundsRatio = (block.timestamp - yVault.lastReport()) * yVault.lockedProfitDegradation();\r\n        uint256 _lockedProfit = yVault.lockedProfit();\r\n\r\n        uint256 DEGRADATION_COEFFICIENT = 10 ** 18;\r\n        uint256 lockedProfit = lockedFundsRatio < DEGRADATION_COEFFICIENT ? \r\n            _lockedProfit - (lockedFundsRatio * _lockedProfit / DEGRADATION_COEFFICIENT)\r\n            : 0; // hardcoded DEGRADATION_COEFFICIENT        \r\n        return yVault.totalAssets() - lockedProfit;\r\n    }\r\n\r\n    \r\n    function previewDeposit(uint256 assets)\r\n        public\r\n        view\r\n        override\r\n        returns (uint256)\r\n    {\r\n        return convertToShares(assets);\r\n    }\r\n\r\n    function previewWithdraw(uint256 assets)\r\n        public\r\n        view\r\n        override\r\n        returns (uint256)\r\n    {\r\n        uint supply = totalSupply();\r\n        uint localAssets = convertYearnSharesToAssets(yVault.balanceOf(address(this)));\r\n        return supply == 0 ? assets : assets.mulDivUp(supply, localAssets); \r\n    }\r\n\r\n    function previewMint(uint256 shares)\r\n        public\r\n        view\r\n        override\r\n        returns (uint256)\r\n    {\r\n        uint supply = totalSupply();\r\n        uint localAssets = convertYearnSharesToAssets(yVault.balanceOf(address(this)));\r\n        return supply == 0 ? shares : shares.mulDivUp(localAssets, supply);\r\n    }\r\n\r\n    function previewRedeem(uint256 shares)\r\n        public\r\n        view\r\n        override\r\n        returns (uint256)\r\n    {\r\n        return convertToAssets(shares);\r\n    }\r\n\r\n    /*//////////////////////////////////////////////////////////////\r\n                    DEPOSIT/WITHDRAWAL LIMIT LOGIC\r\n  //////////////////////////////////////////////////////////////*/\r\n\r\n    function maxDeposit(address)\r\n        public\r\n        view\r\n        override\r\n        returns (uint256)\r\n    {\r\n        return yVault.availableDepositLimit();\r\n    }\r\n\r\n    function maxMint(address _account)\r\n        external\r\n        view\r\n        override\r\n        returns (uint256)\r\n    {\r\n        return maxDeposit(_account)/ yVault.pricePerShare();\r\n    }\r\n\r\n    function maxWithdraw(address owner)\r\n        external\r\n        view\r\n        override\r\n        returns (uint256)\r\n    {\r\n        return convertToAssets(this.balanceOf(owner));\r\n    }\r\n\r\n    function maxRedeem(address owner) external view override returns (uint256) {\r\n        return this.balanceOf(owner);\r\n    }\r\n\r\n     function _deposit(\r\n        uint256 amount,\r\n        address receiver,\r\n        address depositor\r\n    ) internal returns (uint256 deposited, uint256 mintedShares) {\r\n        VaultAPI _vault = yVault;\r\n        IERC20 _token = IERC20(token);\r\n\r\n        if (amount == type(uint256).max) {\r\n            amount = Math.min(\r\n                _token.balanceOf(depositor),\r\n                _token.allowance(depositor, address(this))\r\n            );\r\n        }\r\n\r\n        _token.safeTransferFrom(depositor, address(this), amount);\r\n\r\n\r\n        _token.safeApprove(address(_vault), amount);\r\n\r\n        uint256 beforeBal = _token.balanceOf(address(this));\r\n\r\n        mintedShares = previewDeposit(amount);\r\n        _vault.deposit(amount, address(this));\r\n\r\n        uint256 afterBal = _token.balanceOf(address(this));\r\n        deposited = beforeBal - afterBal;\r\n\r\n        // afterDeposit custom logic\r\n        _mint(receiver, mintedShares);\r\n    }\r\n\r\n    function _withdraw(\r\n        uint256 amount,\r\n        address receiver,\r\n        address sender\r\n    ) internal returns (uint256 assets, uint256 shares) {\r\n        VaultAPI _vault = yVault;\r\n\r\n        shares = previewWithdraw(amount); \r\n        uint yearnShares = convertAssetsToYearnShares(amount);\r\n\r\n        assets = _doWithdrawal(shares, yearnShares, sender, receiver, _vault);\r\n\r\n        if(assets < amount) {\r\n            revert NotEnoughAvailableSharesForAmount();\r\n        }\r\n    }\r\n\r\n    function _redeem(\r\n        uint256 shares, \r\n        address receiver,\r\n        address sender\r\n    ) internal returns (uint256 assets, uint256 sharesBurnt) {\r\n        VaultAPI _vault = yVault;\r\n        uint yearnShares = convertSharesToYearnShares(shares);\r\n        assets = _doWithdrawal(shares, yearnShares, sender, receiver, _vault);    \r\n        sharesBurnt = shares;\r\n    }\r\n\r\n    function _doWithdrawal(\r\n        uint shares,\r\n        uint yearnShares,\r\n        address sender,\r\n        address receiver,\r\n        VaultAPI _vault\r\n    ) private returns (uint assets) {\r\n        if (sender != msg.sender) {\r\n            uint currentAllowance = allowance(sender, msg.sender);\r\n            if(currentAllowance < shares) {\r\n                revert SpenderDoesNotHaveApprovalToBurnShares();\r\n            }\r\n            _approve(sender, msg.sender, currentAllowance - shares);\r\n        }\r\n\r\n        if (shares > balanceOf(sender)) {\r\n            revert NotEnoughAvailableSharesForAmount();\r\n        }\r\n\r\n        if(yearnShares == 0 || shares == 0) {\r\n            revert NoAvailableShares();\r\n        }\r\n\r\n        _burn(sender, shares);\r\n        // withdraw from vault and get total used shares\r\n        assets = _vault.withdraw(yearnShares, receiver, 0);\r\n    }\r\n\r\n    ///\r\n    /// VIEW METHODS\r\n    ///\r\n\r\n    function convertAssetsToYearnShares(uint assets) internal view returns (uint yShares) {\r\n        uint256 supply = yVault.totalSupply();\r\n        return supply == 0 ? assets : assets.mulDivUp(supply, getFreeFunds());\r\n    }\r\n\r\n    function convertYearnSharesToAssets(uint yearnShares) internal view returns (uint assets) {\r\n        uint supply = yVault.totalSupply();\r\n        return supply == 0 ? yearnShares : yearnShares * getFreeFunds() / supply;\r\n    }\r\n\r\n    function convertSharesToYearnShares(uint shares) internal view returns (uint yShares) {\r\n        uint supply = totalSupply(); \r\n        return supply == 0 ? shares : shares.mulDivUp(yVault.balanceOf(address(this)), supply);\r\n    }\r\n\r\n    function allowance(address owner, address spender) public view virtual override(ERC20,IERC4626) returns (uint256) {\r\n        return super.allowance(owner,spender);\r\n    }\r\n\r\n    function balanceOf(address account) public view virtual override(ERC20,IERC4626) returns (uint256) {\r\n        return super.balanceOf(account);\r\n    }\r\n\r\n    function name() public view virtual override(ERC20,IERC4626) returns (string memory) {\r\n        return super.name();\r\n    }\r\n\r\n    function symbol() public view virtual override(ERC20,IERC4626) returns (string memory) {\r\n        return super.symbol();\r\n    }\r\n\r\n    function totalSupply() public view virtual override(ERC20,IERC4626) returns (uint256) {\r\n        return super.totalSupply();\r\n    }\r\n\r\n}"
    },
    "contracts/lib/FixedPointMathLib.sol": {
      "content": "// SPDX-License-Identifier: AGPL-3.0-only\r\npragma solidity >=0.8.0;\r\n\r\n/// @notice Arithmetic library with operations for fixed-point numbers.\r\n/// @author Solmate (https://github.com/Rari-Capital/solmate/blob/main/src/utils/FixedPointMathLib.sol)\r\n/// @author Inspired by USM (https://github.com/usmfum/USM/blob/master/contracts/WadMath.sol)\r\nlibrary FixedPointMathLib {\r\n    /*///////////////////////////////////////////////////////////////\r\n                    SIMPLIFIED FIXED POINT OPERATIONS\r\n    //////////////////////////////////////////////////////////////*/\r\n\r\n    uint256 internal constant WAD = 1e18; // The scalar of ETH and most ERC20s.\r\n\r\n    function mulWadDown(uint256 x, uint256 y) internal pure returns (uint256) {\r\n        return mulDivDown(x, y, WAD); // Equivalent to (x * y) / WAD rounded down.\r\n    }\r\n\r\n    function mulWadUp(uint256 x, uint256 y) internal pure returns (uint256) {\r\n        return mulDivUp(x, y, WAD); // Equivalent to (x * y) / WAD rounded up.\r\n    }\r\n\r\n    function divWadDown(uint256 x, uint256 y) internal pure returns (uint256) {\r\n        return mulDivDown(x, WAD, y); // Equivalent to (x * WAD) / y rounded down.\r\n    }\r\n\r\n    function divWadUp(uint256 x, uint256 y) internal pure returns (uint256) {\r\n        return mulDivUp(x, WAD, y); // Equivalent to (x * WAD) / y rounded up.\r\n    }\r\n\r\n    /*///////////////////////////////////////////////////////////////\r\n                    LOW LEVEL FIXED POINT OPERATIONS\r\n    //////////////////////////////////////////////////////////////*/\r\n\r\n    function mulDivDown(\r\n        uint256 x,\r\n        uint256 y,\r\n        uint256 denominator\r\n    ) internal pure returns (uint256 z) {\r\n        assembly {\r\n            // Store x * y in z for now.\r\n            z := mul(x, y)\r\n\r\n            // Equivalent to require(denominator != 0 && (x == 0 || (x * y) / x == y))\r\n            if iszero(and(iszero(iszero(denominator)), or(iszero(x), eq(div(z, x), y)))) {\r\n                revert(0, 0)\r\n            }\r\n\r\n            // Divide z by the denominator.\r\n            z := div(z, denominator)\r\n        }\r\n    }\r\n\r\n    function mulDivUp(\r\n        uint256 x,\r\n        uint256 y,\r\n        uint256 denominator\r\n    ) internal pure returns (uint256 z) {\r\n        assembly {\r\n            // Store x * y in z for now.\r\n            z := mul(x, y)\r\n\r\n            // Equivalent to require(denominator != 0 && (x == 0 || (x * y) / x == y))\r\n            if iszero(and(iszero(iszero(denominator)), or(iszero(x), eq(div(z, x), y)))) {\r\n                revert(0, 0)\r\n            }\r\n\r\n            // First, divide z - 1 by the denominator and add 1.\r\n            // We allow z - 1 to underflow if z is 0, because we multiply the\r\n            // end result by 0 if z is zero, ensuring we return 0 if z is zero.\r\n            z := mul(iszero(iszero(z)), add(div(sub(z, 1), denominator), 1))\r\n        }\r\n    }\r\n\r\n    function rpow(\r\n        uint256 x,\r\n        uint256 n,\r\n        uint256 scalar\r\n    ) internal pure returns (uint256 z) {\r\n        assembly {\r\n            switch x\r\n            case 0 {\r\n                switch n\r\n                case 0 {\r\n                    // 0 ** 0 = 1\r\n                    z := scalar\r\n                }\r\n                default {\r\n                    // 0 ** n = 0\r\n                    z := 0\r\n                }\r\n            }\r\n            default {\r\n                switch mod(n, 2)\r\n                case 0 {\r\n                    // If n is even, store scalar in z for now.\r\n                    z := scalar\r\n                }\r\n                default {\r\n                    // If n is odd, store x in z for now.\r\n                    z := x\r\n                }\r\n\r\n                // Shifting right by 1 is like dividing by 2.\r\n                let half := shr(1, scalar)\r\n\r\n                for {\r\n                    // Shift n right by 1 before looping to halve it.\r\n                    n := shr(1, n)\r\n                } n {\r\n                    // Shift n right by 1 each iteration to halve it.\r\n                    n := shr(1, n)\r\n                } {\r\n                    // Revert immediately if x ** 2 would overflow.\r\n                    // Equivalent to iszero(eq(div(xx, x), x)) here.\r\n                    if shr(128, x) {\r\n                        revert(0, 0)\r\n                    }\r\n\r\n                    // Store x squared.\r\n                    let xx := mul(x, x)\r\n\r\n                    // Round to the nearest number.\r\n                    let xxRound := add(xx, half)\r\n\r\n                    // Revert if xx + half overflowed.\r\n                    if lt(xxRound, xx) {\r\n                        revert(0, 0)\r\n                    }\r\n\r\n                    // Set x to scaled xxRound.\r\n                    x := div(xxRound, scalar)\r\n\r\n                    // If n is even:\r\n                    if mod(n, 2) {\r\n                        // Compute z * x.\r\n                        let zx := mul(z, x)\r\n\r\n                        // If z * x overflowed:\r\n                        if iszero(eq(div(zx, x), z)) {\r\n                            // Revert if x is non-zero.\r\n                            if iszero(iszero(x)) {\r\n                                revert(0, 0)\r\n                            }\r\n                        }\r\n\r\n                        // Round to the nearest number.\r\n                        let zxRound := add(zx, half)\r\n\r\n                        // Revert if zx + half overflowed.\r\n                        if lt(zxRound, zx) {\r\n                            revert(0, 0)\r\n                        }\r\n\r\n                        // Return properly scaled zxRound.\r\n                        z := div(zxRound, scalar)\r\n                    }\r\n                }\r\n            }\r\n        }\r\n    }\r\n\r\n    /*///////////////////////////////////////////////////////////////\r\n                        GENERAL NUMBER UTILITIES\r\n    //////////////////////////////////////////////////////////////*/\r\n\r\n    function sqrt(uint256 x) internal pure returns (uint256 z) {\r\n        assembly {\r\n            // Start off with z at 1.\r\n            z := 1\r\n\r\n            // Used below to help find a nearby power of 2.\r\n            let y := x\r\n\r\n            // Find the lowest power of 2 that is at least sqrt(x).\r\n            if iszero(lt(y, 0x100000000000000000000000000000000)) {\r\n                y := shr(128, y) // Like dividing by 2 ** 128.\r\n                z := shl(64, z) // Like multiplying by 2 ** 64.\r\n            }\r\n            if iszero(lt(y, 0x10000000000000000)) {\r\n                y := shr(64, y) // Like dividing by 2 ** 64.\r\n                z := shl(32, z) // Like multiplying by 2 ** 32.\r\n            }\r\n            if iszero(lt(y, 0x100000000)) {\r\n                y := shr(32, y) // Like dividing by 2 ** 32.\r\n                z := shl(16, z) // Like multiplying by 2 ** 16.\r\n            }\r\n            if iszero(lt(y, 0x10000)) {\r\n                y := shr(16, y) // Like dividing by 2 ** 16.\r\n                z := shl(8, z) // Like multiplying by 2 ** 8.\r\n            }\r\n            if iszero(lt(y, 0x100)) {\r\n                y := shr(8, y) // Like dividing by 2 ** 8.\r\n                z := shl(4, z) // Like multiplying by 2 ** 4.\r\n            }\r\n            if iszero(lt(y, 0x10)) {\r\n                y := shr(4, y) // Like dividing by 2 ** 4.\r\n                z := shl(2, z) // Like multiplying by 2 ** 2.\r\n            }\r\n            if iszero(lt(y, 0x8)) {\r\n                // Equivalent to 2 ** z.\r\n                z := shl(1, z)\r\n            }\r\n\r\n            // Shifting right by 1 is like dividing by 2.\r\n            z := shr(1, add(z, div(x, z)))\r\n            z := shr(1, add(z, div(x, z)))\r\n            z := shr(1, add(z, div(x, z)))\r\n            z := shr(1, add(z, div(x, z)))\r\n            z := shr(1, add(z, div(x, z)))\r\n            z := shr(1, add(z, div(x, z)))\r\n            z := shr(1, add(z, div(x, z)))\r\n\r\n            // Compute a rounded down version of z.\r\n            let zRoundDown := div(x, z)\r\n\r\n            // If zRoundDown is smaller, use it.\r\n            if lt(zRoundDown, z) {\r\n                z := zRoundDown\r\n            }\r\n        }\r\n    }\r\n}"
    },
    "contracts/interfaces/IERC4626.sol": {
      "content": "// SPDX-License-Identifier: MIT\r\npragma solidity >=0.8.0;\r\n\r\nimport \"@openzeppelin/contracts/token/ERC20/IERC20.sol\";\r\n\r\ninterface IERC4626 is IERC20 {\r\n\r\n\r\n    /*///////////////////////////////////////////////////////////////\r\n                                 EVENTS\r\n    //////////////////////////////////////////////////////////////*/\r\n    \r\n    event Deposit(address indexed caller, address indexed owner, uint256 amountUnderlying, uint256 shares);\r\n\r\n    event Withdraw(\r\n        address indexed caller,\r\n        address indexed receiver,\r\n        address indexed owner,\r\n        uint256 amountUnderlying,\r\n        uint256 shares\r\n    );\r\n\r\n    /// Transactional Functions\r\n\r\n    function deposit(uint amountUnderlying, address receiver) external returns (uint shares);\r\n\r\n    function mint(uint shares, address receiver) external returns (uint amountUnderlying);\r\n\r\n    function withdraw(uint amountUnderlying, address receiver, address owner) external returns (uint shares);\r\n\r\n    function redeem(uint shares, address receiver, address owner) external returns (uint amountUnderlying);\r\n\r\n\r\n    /// View Functions\r\n\r\n    function asset() external view returns (address assetTokenAddress);\r\n\r\n    // Total assets held within\r\n    function totalAssets() external view returns (uint totalManagedAssets);\r\n\r\n    function convertToShares(uint amountUnderlying) external view returns (uint shares);\r\n\r\n    function convertToAssets(uint shares) external view returns (uint amountUnderlying);\r\n\r\n    function maxDeposit(address receiver) external view returns (uint maxAssets);\r\n\r\n    function previewDeposit(uint amountUnderlying) external view returns (uint shares);\r\n\r\n    function maxMint(address receiver) external view returns (uint maxShares);\r\n\r\n    function previewMint(uint shares) external view returns (uint amountUnderlying);\r\n\r\n    function maxWithdraw(address owner) external view returns (uint maxAssets);\r\n\r\n    function previewWithdraw(uint amountUnderlying) external view returns (uint shares);\r\n\r\n    function maxRedeem(address owner) external view returns (uint maxShares);\r\n\r\n    function previewRedeem(uint shares) external view returns (uint amountUnderlying);\r\n\r\n    /// IERC20 View Methods\r\n\r\n    /**\r\n     * @dev Returns the amount of shares in existence.\r\n     */\r\n    function totalSupply() external view returns (uint256);\r\n\r\n    /**\r\n     * @dev Returns the amount of shares owned by `account`.\r\n     */\r\n    function balanceOf(address account) external view returns (uint256);\r\n\r\n    /**\r\n     * @dev Returns the remaining number of shares that `spender` will be\r\n     * allowed to spend on behalf of `owner` through {transferFrom}. This is\r\n     * zero by default.\r\n     *\r\n     * This value changes when {approve} or {transferFrom} are called.\r\n     */\r\n    function allowance(address owner, address spender) external view returns (uint256);\r\n\r\n    /**\r\n     * @dev Returns the name of the vault shares.\r\n     */\r\n    function name() external view returns (string memory);\r\n\r\n    /**\r\n     * @dev Returns the symbol of the vault shares.\r\n     */\r\n    function symbol() external view returns (string memory);\r\n\r\n    /**\r\n     * @dev Returns the decimals places of the vault shares.\r\n     */\r\n    function decimals() external view returns (uint8);\r\n\r\n    \r\n}"
    },
    "contracts/interfaces/adapters/yearn/VaultAPI.sol": {
      "content": "// SPDX-License-Identifier: GPL-3.0\r\n\r\npragma solidity >=0.8;\r\n\r\nimport \"../../IERC20.sol\";\r\n\r\nstruct StrategyParams {\r\n    uint256 performanceFee;\r\n    uint256 activation;\r\n    uint256 debtRatio;\r\n    uint256 minDebtPerHarvest;\r\n    uint256 maxDebtPerHarvest;\r\n    uint256 lastReport;\r\n    uint256 totalDebt;\r\n    uint256 totalGain;\r\n    uint256 totalLoss;\r\n}\r\n\r\ninterface IYearnRegistry {\r\n    function latestVault(address asset) external returns (address); \r\n}\r\n\r\ninterface VaultAPI is IERC20 {\r\n\r\n    function name() external view returns (string calldata);\r\n\r\n    function symbol() external view returns (string calldata);\r\n\r\n    function decimals() external view returns (uint256);\r\n\r\n    function apiVersion() external pure returns (string memory);\r\n\r\n    function permit(\r\n        address owner,\r\n        address spender,\r\n        uint256 amount,\r\n        uint256 expiry,\r\n        bytes calldata signature\r\n    ) external returns (bool);\r\n\r\n    // NOTE: Vyper produces multiple signatures for a given function with \"default\" args\r\n    function deposit() external returns (uint256);\r\n\r\n    function deposit(uint256 amount) external returns (uint256);\r\n\r\n    function deposit(uint256 amount, address recipient) external returns (uint256);\r\n\r\n    // NOTE: Vyper produces multiple signatures for a given function with \"default\" args\r\n    function withdraw() external returns (uint256);\r\n\r\n    function withdraw(uint256 maxShares) external returns (uint256);\r\n\r\n    function withdraw(uint256 maxShares, address recipient) external returns (uint256);\r\n\r\n    function withdraw(uint256 maxShares, address recipient, uint maxLoss) external returns (uint256);\r\n\r\n    function token() external view returns (address);\r\n\r\n    function strategies(address _strategy) external view returns (StrategyParams memory);\r\n\r\n    function pricePerShare() external view returns (uint256);\r\n\r\n    function totalAssets() external view returns (uint256);\r\n\r\n    function depositLimit() external view returns (uint256);\r\n\r\n    function maxAvailableShares() external view returns (uint256);\r\n\r\n    function availableDepositLimit() external view returns (uint256);\r\n\r\n    /**\r\n     * View how much the Vault would increase this Strategy's borrow limit,\r\n     * based on its present performance (since its last report). Can be used to\r\n     * determine expectedReturn in your Strategy.\r\n     */\r\n    function creditAvailable() external view returns (uint256);\r\n\r\n    /**\r\n     * View how much the Vault would like to pull back from the Strategy,\r\n     * based on its present performance (since its last report). Can be used to\r\n     * determine expectedReturn in your Strategy.\r\n     */\r\n    function debtOutstanding() external view returns (uint256);\r\n\r\n    /**\r\n     * View how much the Vault expect this Strategy to return at the current\r\n     * block, based on its present performance (since its last report). Can be\r\n     * used to determine expectedReturn in your Strategy.\r\n     */\r\n    function expectedReturn() external view returns (uint256);\r\n\r\n    /**\r\n     * This is the main contact point where the Strategy interacts with the\r\n     * Vault. It is critical that this call is handled as intended by the\r\n     * Strategy. Therefore, this function will be called by BaseStrategy to\r\n     * make sure the integration is correct.\r\n     */\r\n    function report(\r\n        uint256 _gain,\r\n        uint256 _loss,\r\n        uint256 _debtPayment\r\n    ) external returns (uint256);\r\n\r\n    /**\r\n     * This function should only be used in the scenario where the Strategy is\r\n     * being retired but no migration of the positions are possible, or in the\r\n     * extreme scenario that the Strategy needs to be put into \"Emergency Exit\"\r\n     * mode in order for it to exit as quickly as possible. The latter scenario\r\n     * could be for any reason that is considered \"critical\" that the Strategy\r\n     * exits its position as fast as possible, such as a sudden change in\r\n     * market conditions leading to losses, or an imminent failure in an\r\n     * external dependency.\r\n     */\r\n    function revokeStrategy() external;\r\n\r\n    /**\r\n     * View the governance address of the Vault to assert privileged functions\r\n     * can only be called by governance. The Strategy serves the Vault, so it\r\n     * is subject to governance defined by the Vault.\r\n     */\r\n    function governance() external view returns (address);\r\n\r\n    /**\r\n     * View the management address of the Vault to assert privileged functions\r\n     * can only be called by management. The Strategy serves the Vault, so it\r\n     * is subject to management defined by the Vault.\r\n     */\r\n    function management() external view returns (address);\r\n\r\n    /**\r\n     * View the guardian address of the Vault to assert privileged functions\r\n     * can only be called by guardian. The Strategy serves the Vault, so it\r\n     * is subject to guardian defined by the Vault.\r\n     */\r\n    function guardian() external view returns (address);\r\n\r\n    function lockedProfitDegradation() external view returns (uint256);\r\n    function lockedProfitDegration() external view returns (uint256);\r\n    function lastReport() external view returns (uint256);\r\n    function lockedProfit() external view returns (uint256);\r\n    function totalDebt() external view returns (uint256);\r\n\r\n}\r\n"
    },
    "contracts/interfaces/adapters/yearn/IVaultWrapper.sol": {
      "content": "// SPDX-License-Identifier: AGPL-3.0-only\r\npragma solidity ^0.8.12;\r\n\r\ninterface IVaultWrapper {\r\n    \r\n    error NoAvailableShares();\r\n    error NotEnoughAvailableSharesForAmount();\r\n    error SpenderDoesNotHaveApprovalToBurnShares();\r\n    error NotEnoughAvailableAssetsForAmount();\r\n    error InvalidMigrationTarget();\r\n    error MinimumDepositNotMet();\r\n    error NonZeroArgumentExpected();\r\n\r\n    function vault() external view returns (address);\r\n\r\n    function vaultTotalSupply() external view returns (uint256);\r\n}"
    },
    "@openzeppelin/contracts/access/Ownable.sol": {
      "content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (access/Ownable.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../utils/Context.sol\";\n\n/**\n * @dev Contract module which provides a basic access control mechanism, where\n * there is an account (an owner) that can be granted exclusive access to\n * specific functions.\n *\n * By default, the owner account will be the one that deploys the contract. This\n * can later be changed with {transferOwnership}.\n *\n * This module is used through inheritance. It will make available the modifier\n * `onlyOwner`, which can be applied to your functions to restrict their use to\n * the owner.\n */\nabstract contract Ownable is Context {\n    address private _owner;\n\n    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);\n\n    /**\n     * @dev Initializes the contract setting the deployer as the initial owner.\n     */\n    constructor() {\n        _transferOwnership(_msgSender());\n    }\n\n    /**\n     * @dev Returns the address of the current owner.\n     */\n    function owner() public view virtual returns (address) {\n        return _owner;\n    }\n\n    /**\n     * @dev Throws if called by any account other than the owner.\n     */\n    modifier onlyOwner() {\n        require(owner() == _msgSender(), \"Ownable: caller is not the owner\");\n        _;\n    }\n\n    /**\n     * @dev Leaves the contract without owner. It will not be possible to call\n     * `onlyOwner` functions anymore. Can only be called by the current owner.\n     *\n     * NOTE: Renouncing ownership will leave the contract without an owner,\n     * thereby removing any functionality that is only available to the owner.\n     */\n    function renounceOwnership() public virtual onlyOwner {\n        _transferOwnership(address(0));\n    }\n\n    /**\n     * @dev Transfers ownership of the contract to a new account (`newOwner`).\n     * Can only be called by the current owner.\n     */\n    function transferOwnership(address newOwner) public virtual onlyOwner {\n        require(newOwner != address(0), \"Ownable: new owner is the zero address\");\n        _transferOwnership(newOwner);\n    }\n\n    /**\n     * @dev Transfers ownership of the contract to a new account (`newOwner`).\n     * Internal function without access restriction.\n     */\n    function _transferOwnership(address newOwner) internal virtual {\n        address oldOwner = _owner;\n        _owner = newOwner;\n        emit OwnershipTransferred(oldOwner, newOwner);\n    }\n}\n"
    },
    "@openzeppelin/contracts/security/ReentrancyGuard.sol": {
      "content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (security/ReentrancyGuard.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Contract module that helps prevent reentrant calls to a function.\n *\n * Inheriting from `ReentrancyGuard` will make the {nonReentrant} modifier\n * available, which can be applied to functions to make sure there are no nested\n * (reentrant) calls to them.\n *\n * Note that because there is a single `nonReentrant` guard, functions marked as\n * `nonReentrant` may not call one another. This can be worked around by making\n * those functions `private`, and then adding `external` `nonReentrant` entry\n * points to them.\n *\n * TIP: If you would like to learn more about reentrancy and alternative ways\n * to protect against it, check out our blog post\n * https://blog.openzeppelin.com/reentrancy-after-istanbul/[Reentrancy After Istanbul].\n */\nabstract contract ReentrancyGuard {\n    // Booleans are more expensive than uint256 or any type that takes up a full\n    // word because each write operation emits an extra SLOAD to first read the\n    // slot's contents, replace the bits taken up by the boolean, and then write\n    // back. This is the compiler's defense against contract upgrades and\n    // pointer aliasing, and it cannot be disabled.\n\n    // The values being non-zero value makes deployment a bit more expensive,\n    // but in exchange the refund on every call to nonReentrant will be lower in\n    // amount. Since refunds are capped to a percentage of the total\n    // transaction's gas, it is best to keep them low in cases like this one, to\n    // increase the likelihood of the full refund coming into effect.\n    uint256 private constant _NOT_ENTERED = 1;\n    uint256 private constant _ENTERED = 2;\n\n    uint256 private _status;\n\n    constructor() {\n        _status = _NOT_ENTERED;\n    }\n\n    /**\n     * @dev Prevents a contract from calling itself, directly or indirectly.\n     * Calling a `nonReentrant` function from another `nonReentrant`\n     * function is not supported. It is possible to prevent this from happening\n     * by making the `nonReentrant` function external, and making it call a\n     * `private` function that does the actual work.\n     */\n    modifier nonReentrant() {\n        // On the first call to nonReentrant, _notEntered will be true\n        require(_status != _ENTERED, \"ReentrancyGuard: reentrant call\");\n\n        // Any calls to nonReentrant after this point will fail\n        _status = _ENTERED;\n\n        _;\n\n        // By storing the original value once again, a refund is triggered (see\n        // https://eips.ethereum.org/EIPS/eip-2200)\n        _status = _NOT_ENTERED;\n    }\n}\n"
    },
    "@openzeppelin/contracts/token/ERC20/ERC20.sol": {
      "content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.6.0) (token/ERC20/ERC20.sol)\n\npragma solidity ^0.8.0;\n\nimport \"./IERC20.sol\";\nimport \"./extensions/IERC20Metadata.sol\";\nimport \"../../utils/Context.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.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How\n * to implement supply mechanisms].\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 ERC20 is Context, IERC20, IERC20Metadata {\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     * The default value of {decimals} is 18. To select a different value for\n     * {decimals} you should overload it.\n     *\n     * All two of these values are immutable: they can only be set once during\n     * construction.\n     */\n    constructor(string memory name_, string memory symbol_) {\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 value {ERC20} uses, unless this function is\n     * 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(\n        address from,\n        address to,\n        uint256 amount\n    ) 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 `sender` to `recipient`.\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(\n        address from,\n        address to,\n        uint256 amount\n    ) 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        }\n        _balances[to] += amount;\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        _balances[account] += amount;\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        }\n        _totalSupply -= amount;\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(\n        address owner,\n        address spender,\n        uint256 amount\n    ) 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(\n        address owner,\n        address spender,\n        uint256 amount\n    ) 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(\n        address from,\n        address to,\n        uint256 amount\n    ) 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(\n        address from,\n        address to,\n        uint256 amount\n    ) internal virtual {}\n}\n"
    },
    "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol": {
      "content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (token/ERC20/utils/SafeERC20.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../IERC20.sol\";\nimport \"../../../utils/Address.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 SafeERC20 {\n    using Address for address;\n\n    function safeTransfer(\n        IERC20 token,\n        address to,\n        uint256 value\n    ) internal {\n        _callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value));\n    }\n\n    function safeTransferFrom(\n        IERC20 token,\n        address from,\n        address to,\n        uint256 value\n    ) 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(\n        IERC20 token,\n        address spender,\n        uint256 value\n    ) 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    function safeIncreaseAllowance(\n        IERC20 token,\n        address spender,\n        uint256 value\n    ) internal {\n        uint256 newAllowance = token.allowance(address(this), spender) + value;\n        _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));\n    }\n\n    function safeDecreaseAllowance(\n        IERC20 token,\n        address spender,\n        uint256 value\n    ) internal {\n        unchecked {\n            uint256 oldAllowance = token.allowance(address(this), spender);\n            require(oldAllowance >= value, \"SafeERC20: decreased allowance below zero\");\n            uint256 newAllowance = oldAllowance - value;\n            _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));\n        }\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(IERC20 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        if (returndata.length > 0) {\n            // Return data is optional\n            require(abi.decode(returndata, (bool)), \"SafeERC20: ERC20 operation did not succeed\");\n        }\n    }\n}\n"
    },
    "@openzeppelin/contracts/utils/math/Math.sol": {
      "content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.5.0) (utils/math/Math.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Standard math utilities missing in the Solidity language.\n */\nlibrary Math {\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 / b + (a % b == 0 ? 0 : 1);\n    }\n}\n"
    },
    "@openzeppelin/contracts/token/ERC20/IERC20.sol": {
      "content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.6.0) (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 IERC20 {\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(\n        address from,\n        address to,\n        uint256 amount\n    ) external returns (bool);\n}\n"
    },
    "contracts/interfaces/IERC20.sol": {
      "content": "// SPDX-License-Identifier: MIT\r\n// OpenZeppelin Contracts (last updated v4.6.0) (token/ERC20/IERC20.sol)\r\n\r\npragma solidity ^0.8.0;\r\n\r\n/**\r\n * @dev Interface of the ERC20 standard as defined in the EIP.\r\n */\r\ninterface IERC20 {\r\n    /**\r\n     * @dev Emitted when `value` tokens are moved from one account (`from`) to\r\n     * another (`to`).\r\n     *\r\n     * Note that `value` may be zero.\r\n     */\r\n    event Transfer(address indexed from, address indexed to, uint256 value);\r\n\r\n    /**\r\n     * @dev Emitted when the allowance of a `spender` for an `owner` is set by\r\n     * a call to {approve}. `value` is the new allowance.\r\n     */\r\n    event Approval(address indexed owner, address indexed spender, uint256 value);\r\n\r\n    /**\r\n     * @dev Returns the amount of tokens in existence.\r\n     */\r\n    function totalSupply() external view returns (uint256);\r\n\r\n    /**\r\n     * @dev Returns the amount of tokens owned by `account`.\r\n     */\r\n    function balanceOf(address account) external view returns (uint256);\r\n\r\n    /**\r\n     * @dev Moves `amount` tokens from the caller's account to `to`.\r\n     *\r\n     * Returns a boolean value indicating whether the operation succeeded.\r\n     *\r\n     * Emits a {Transfer} event.\r\n     */\r\n    function transfer(address to, uint256 amount) external returns (bool);\r\n\r\n    /**\r\n     * @dev Returns the remaining number of tokens that `spender` will be\r\n     * allowed to spend on behalf of `owner` through {transferFrom}. This is\r\n     * zero by default.\r\n     *\r\n     * This value changes when {approve} or {transferFrom} are called.\r\n     */\r\n    function allowance(address owner, address spender) external view returns (uint256);\r\n\r\n    /**\r\n     * @dev Sets `amount` as the allowance of `spender` over the caller's tokens.\r\n     *\r\n     * Returns a boolean value indicating whether the operation succeeded.\r\n     *\r\n     * IMPORTANT: Beware that changing an allowance with this method brings the risk\r\n     * that someone may use both the old and the new allowance by unfortunate\r\n     * transaction ordering. One possible solution to mitigate this race\r\n     * condition is to first reduce the spender's allowance to 0 and set the\r\n     * desired value afterwards:\r\n     * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729\r\n     *\r\n     * Emits an {Approval} event.\r\n     */\r\n    function approve(address spender, uint256 amount) external returns (bool);\r\n\r\n    /**\r\n     * @dev Moves `amount` tokens from `from` to `to` using the\r\n     * allowance mechanism. `amount` is then deducted from the caller's\r\n     * allowance.\r\n     *\r\n     * Returns a boolean value indicating whether the operation succeeded.\r\n     *\r\n     * Emits a {Transfer} event.\r\n     */\r\n    function transferFrom(\r\n        address from,\r\n        address to,\r\n        uint256 amount\r\n    ) external returns (bool);\r\n}"
    },
    "@openzeppelin/contracts/utils/Context.sol": {
      "content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (utils/Context.sol)\n\npragma solidity ^0.8.0;\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 Context {\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"
    },
    "@openzeppelin/contracts/token/ERC20/extensions/IERC20Metadata.sol": {
      "content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (token/ERC20/extensions/IERC20Metadata.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../IERC20.sol\";\n\n/**\n * @dev Interface for the optional metadata functions from the ERC20 standard.\n *\n * _Available since v4.1._\n */\ninterface IERC20Metadata is IERC20 {\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"
    },
    "@openzeppelin/contracts/utils/Address.sol": {
      "content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.5.0) (utils/Address.sol)\n\npragma solidity ^0.8.1;\n\n/**\n * @dev Collection of functions related to the address type\n */\nlibrary Address {\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     *\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://diligence.consensys.net/posts/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/v0.5.11/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 functionCall(target, data, \"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(\n        address target,\n        bytes memory data,\n        uint256 value\n    ) 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        require(isContract(target), \"Address: call to non-contract\");\n\n        (bool success, bytes memory returndata) = target.call{value: value}(data);\n        return verifyCallResult(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        require(isContract(target), \"Address: static call to non-contract\");\n\n        (bool success, bytes memory returndata) = target.staticcall(data);\n        return verifyCallResult(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        require(isContract(target), \"Address: delegate call to non-contract\");\n\n        (bool success, bytes memory returndata) = target.delegatecall(data);\n        return verifyCallResult(success, returndata, errorMessage);\n    }\n\n    /**\n     * @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the\n     * revert reason 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            // 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\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}\n"
    }
  },
  "settings": {
    "metadata": {
      "bytecodeHash": "none",
      "useLiteralContent": true
    },
    "optimizer": {
      "enabled": true,
      "runs": 100
    },
    "outputSelection": {
      "*": {
        "*": [
          "evm.bytecode",
          "evm.deployedBytecode",
          "devdoc",
          "userdoc",
          "metadata",
          "abi"
        ]
      }
    },
    "libraries": {}
  }
}