organized_contracts/19/191453de5f78814560c867e9e3f7d090246e8c4a8b032de1395a3836719686a6/contract.json

{
  "language": "Solidity",
  "sources": {
    "WrappedERC4626CurveMetapoolConvex.sol": {
      "content": "pragma solidity 0.8.15;\n\nimport \"ERC4626.sol\";\nimport \"IERC20Metadata.sol\";\nimport \"SafeERC20.sol\";\nimport \"AssetConverter.sol\";\nimport \"CurveMetapoolLibrary.sol\";\nimport \"PricePerTokenMixin.sol\";\n\ninterface IConvexBooster {\n    function deposit(\n        uint256 _pid,\n        uint256 _amount,\n        bool _stake\n    ) external returns (bool);\n}\n\ninterface IConvexRewardVirtual {\n    function rewardToken() external view returns (address);\n}\n\ninterface IConvexReward {\n    function withdrawAndUnwrap(uint256 amount, bool claim)\n        external\n        returns (bool);\n\n    function getReward() external returns (bool);\n\n    function balanceOf(address account) external view returns (uint256);\n\n    function extraRewardsLength() external view returns (uint256);\n\n    function extraRewards(uint256 i) external view returns (address);\n}\n\ncontract WrappedERC4626CurveMetapoolConvex is ERC4626, PricePerTokenMixin {\n    using CurveMetapoolLibrary for CurveMetapoolLibrary.CurveMetapool;\n    using SafeERC20 for IERC20;\n    using SafeERC20 for IERC20Metadata;\n\n    // The end pool\n    CurveMetapoolLibrary.CurveMetapool public curveMetapool;\n\n    IConvexBooster public immutable convexBooster;\n    IConvexReward public immutable convexReward;\n\n    AssetConverter public assetConverter;\n\n    uint256 public poolAssetIndex;\n    uint256 public poolAssetsCount;\n\n    uint256 depositTokenDecimals;\n\n    uint256 convexPoolId;\n\n    IERC20 public immutable crv;\n    IERC20 public immutable cvx;\n\n    IERC20[] public rewardTokens;\n\n    struct ConstructorParameters {\n        CurveMetapoolLibrary.CurveMetapool curveMetapool;\n        address crv;\n        address cvx;\n        address convexBooster;\n        address convexReward;\n        address assetConverter;\n        uint256 convexPoolId;\n        IERC20Metadata LPToken;\n        IERC20Metadata token;\n        string name;\n        string symbol;\n    }\n\n    uint8 private immutable _decimals;\n\n    constructor(ConstructorParameters memory params)\n        ERC4626(params.token)\n        ERC20(params.name, params.symbol)\n    {\n        require(params.curveMetapool.zapAddress != address(0), \"Zero address provided\");\n        require(params.curveMetapool.poolAddress != address(0), \"Zero address provided\");\n        require(params.crv != address(0), \"Zero address provided\");\n        require(params.cvx != address(0), \"Zero address provided\");\n        require(address(params.token) != address(0), \"Zero address provided\");\n        require(address(params.LPToken) != address(0), \"Zero address provided\");\n        require(params.convexBooster != address(0), \"Zero address provided\");\n        require(params.convexReward != address(0), \"Zero address provided\");\n        require(params.assetConverter != address(0), \"Zero address provided\");\n\n        curveMetapool = params.curveMetapool;\n\n        crv = IERC20(params.crv);\n        cvx = IERC20(params.cvx);\n        convexBooster = IConvexBooster(params.convexBooster);\n        convexReward = IConvexReward(params.convexReward);\n\n        assetConverter = AssetConverter(params.assetConverter);\n\n        depositTokenDecimals = params.token.decimals();\n\n        rewardTokens.push(cvx);\n        rewardTokens.push(crv);\n\n        cvx.safeIncreaseAllowance(address(assetConverter), type(uint256).max);\n        crv.safeIncreaseAllowance(address(assetConverter), type(uint256).max);\n        \n        for (uint i = 0; i < convexReward.extraRewardsLength(); i++) {\n            address rewardToken = IConvexRewardVirtual(\n                convexReward.extraRewards(i)\n            ).rewardToken();\n            rewardTokens.push(IERC20(rewardToken));\n            IERC20(rewardToken).safeIncreaseAllowance(\n                address(assetConverter),\n                type(uint256).max\n            );\n        }\n\n        convexPoolId = params.convexPoolId;\n\n        IERC20(asset()).safeIncreaseAllowance(\n            curveMetapool.zapAddress,\n            type(uint256).max\n        );\n        params.LPToken.safeIncreaseAllowance(\n            curveMetapool.zapAddress,\n            type(uint256).max\n        );\n        params.LPToken.safeIncreaseAllowance(\n            address(convexBooster),\n            type(uint256).max\n        );\n        _decimals = params.LPToken.decimals();\n    }\n\n    function maxDeposit(address)\n        public\n        view\n        virtual\n        override\n        returns (uint256)\n    {\n        return type(uint256).max;\n    }\n\n    function decimals() public view virtual override returns (uint8)\n    {\n        return _decimals;\n    }\n\n    function totalAssets() public view virtual override returns (uint256) {\n        return convertToAssets(totalSupply());\n    }\n\n    function _convertMetapoolLpAmountToShares(uint256 lpAmount)\n        internal\n        view\n        returns (uint256 shares)\n    {\n        // Current balance on Convex\n        uint256 balance = convexReward.balanceOf(address(this));\n        if (balance == 0)\n            shares = lpAmount;\n        else {\n            shares = (lpAmount * totalSupply()) / balance;\n        }\n    }\n\n    function _convertSharesToMetapoolLpAmount(uint256 shares)\n        internal\n        view\n        returns (uint256 lpAmount)\n    {\n        if (totalSupply() == 0)\n            return shares;\n        else\n            return\n                (shares * convexReward.balanceOf(address(this))) /\n                totalSupply();\n    }\n\n    function _convertToShares(uint256 assets, Math.Rounding rounding)\n        internal\n        view\n        virtual\n        override\n        returns (uint256 shares)\n    {\n        assets = (assets * (10**18)) / (10**depositTokenDecimals);\n        uint256 metapoolLpAmount = (assets * (10**decimals())) /\n            curveMetapool.getVirtualPrice();\n        return _convertMetapoolLpAmountToShares(metapoolLpAmount);\n    }\n\n    function _convertToAssets(uint256 shares, Math.Rounding rounding)\n        internal\n        view\n        virtual\n        override\n        returns (uint256 assets)\n    {\n        uint256 metapoolLpAmount = _convertSharesToMetapoolLpAmount(shares);\n        return\n            (metapoolLpAmount *\n                curveMetapool.getVirtualPrice() *\n                (10**depositTokenDecimals)) /\n            ((10**18) * (10**decimals()));\n    }\n\n\n    function _addLiquidityAndStake(uint256 amount)\n        internal\n        returns (uint256 shares)\n    {\n        uint256 metapoolLpAmount = curveMetapool.addLiquidity(amount);\n        shares = _convertMetapoolLpAmountToShares(metapoolLpAmount);\n        convexBooster.deposit(convexPoolId, metapoolLpAmount, true);\n    }\n\n    function _deposit(\n        address caller,\n        address receiver,\n        uint256 assets,\n        uint256 shares\n    ) internal virtual override {\n        IERC20(asset()).safeTransferFrom(caller, address(this), assets);\n\n        shares = _addLiquidityAndStake(assets);\n\n        _mint(receiver, shares);\n\n        emit Deposit(caller, receiver, assets, shares);\n    }\n\n    function _withdraw(\n        address caller,\n        address receiver,\n        address owner,\n        uint256 assets,\n        uint256 shares\n    ) internal virtual override {\n        if (caller != owner) {\n            _spendAllowance(owner, caller, shares);\n        }\n\n        uint256 metapoolLpAmount = _convertSharesToMetapoolLpAmount(shares);\n        convexReward.withdrawAndUnwrap(metapoolLpAmount, false);\n        assets = curveMetapool.removeLiquidity(metapoolLpAmount);\n\n        _burn(owner, shares);\n        IERC20(asset()).safeTransfer(receiver, assets);\n\n        emit Withdraw(caller, receiver, owner, assets, shares);\n    }\n\n    function harvest() external returns(uint256 harvestedAmount) {\n        convexReward.getReward();\n        for (uint256 i = 0; i < rewardTokens.length; i++) {\n            uint256 balance = rewardTokens[i].balanceOf(address(this));\n            if (balance > 0)\n                harvestedAmount += assetConverter.swap(\n                    address(rewardTokens[i]),\n                    asset(),\n                    rewardTokens[i].balanceOf(address(this))\n                );\n        }\n        if (harvestedAmount > 0) {\n            _addLiquidityAndStake(harvestedAmount);\n        }\n    }\n}\n"
    },
    "ERC4626.sol": {
      "content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.8.0) (token/ERC20/extensions/ERC4626.sol)\n\npragma solidity ^0.8.0;\n\nimport \"ERC20.sol\";\nimport \"SafeERC20.sol\";\nimport \"IERC4626.sol\";\nimport \"Math.sol\";\n\n/**\n * @dev Implementation of the ERC4626 \"Tokenized Vault Standard\" as defined in\n * https://eips.ethereum.org/EIPS/eip-4626[EIP-4626].\n *\n * This extension allows the minting and burning of \"shares\" (represented using the ERC20 inheritance) in exchange for\n * underlying \"assets\" through standardized {deposit}, {mint}, {redeem} and {burn} workflows. This contract extends\n * the ERC20 standard. Any additional extensions included along it would affect the \"shares\" token represented by this\n * contract and not the \"assets\" token which is an independent contract.\n *\n * CAUTION: Deposits and withdrawals may incur unexpected slippage. Users should verify that the amount received of\n * shares or assets is as expected. EOAs should operate through a wrapper that performs these checks such as\n * https://github.com/fei-protocol/ERC4626#erc4626router-and-base[ERC4626Router].\n *\n * _Available since v4.7._\n */\nabstract contract ERC4626 is ERC20, IERC4626 {\n    using Math for uint256;\n\n    IERC20 private immutable _asset;\n    uint8 private immutable _decimals;\n\n    /**\n     * @dev Set the underlying asset contract. This must be an ERC20-compatible contract (ERC20 or ERC777).\n     */\n    constructor(IERC20 asset_) {\n        (bool success, uint8 assetDecimals) = _tryGetAssetDecimals(asset_);\n        _decimals = success ? assetDecimals : super.decimals();\n        _asset = asset_;\n    }\n\n    /**\n     * @dev Attempts to fetch the asset decimals. A return value of false indicates that the attempt failed in some way.\n     */\n    function _tryGetAssetDecimals(IERC20 asset_) private returns (bool, uint8) {\n        (bool success, bytes memory encodedDecimals) = address(asset_).call(\n            abi.encodeWithSelector(IERC20Metadata.decimals.selector)\n        );\n        if (success && encodedDecimals.length >= 32) {\n            uint256 returnedDecimals = abi.decode(encodedDecimals, (uint256));\n            if (returnedDecimals <= type(uint8).max) {\n                return (true, uint8(returnedDecimals));\n            }\n        }\n        return (false, 0);\n    }\n\n    /**\n     * @dev Decimals are read from the underlying asset in the constructor and cached. If this fails (e.g., the asset\n     * has not been created yet), the cached value is set to a default obtained by `super.decimals()` (which depends on\n     * inheritance but is most likely 18). Override this function in order to set a guaranteed hardcoded value.\n     * See {IERC20Metadata-decimals}.\n     */\n    function decimals() public view virtual override(IERC20Metadata, ERC20) returns (uint8) {\n        return _decimals;\n    }\n\n    /** @dev See {IERC4626-asset}. */\n    function asset() public view virtual override returns (address) {\n        return address(_asset);\n    }\n\n    /** @dev See {IERC4626-totalAssets}. */\n    function totalAssets() public view virtual override returns (uint256) {\n        return _asset.balanceOf(address(this));\n    }\n\n    /** @dev See {IERC4626-convertToShares}. */\n    function convertToShares(uint256 assets) public view virtual override returns (uint256 shares) {\n        return _convertToShares(assets, Math.Rounding.Down);\n    }\n\n    /** @dev See {IERC4626-convertToAssets}. */\n    function convertToAssets(uint256 shares) public view virtual override returns (uint256 assets) {\n        return _convertToAssets(shares, Math.Rounding.Down);\n    }\n\n    /** @dev See {IERC4626-maxDeposit}. */\n    function maxDeposit(address) public view virtual override returns (uint256) {\n        return _isVaultCollateralized() ? type(uint256).max : 0;\n    }\n\n    /** @dev See {IERC4626-maxMint}. */\n    function maxMint(address) public view virtual override returns (uint256) {\n        return type(uint256).max;\n    }\n\n    /** @dev See {IERC4626-maxWithdraw}. */\n    function maxWithdraw(address owner) public view virtual override returns (uint256) {\n        return _convertToAssets(balanceOf(owner), Math.Rounding.Down);\n    }\n\n    /** @dev See {IERC4626-maxRedeem}. */\n    function maxRedeem(address owner) public view virtual override returns (uint256) {\n        return balanceOf(owner);\n    }\n\n    /** @dev See {IERC4626-previewDeposit}. */\n    function previewDeposit(uint256 assets) public view virtual override returns (uint256) {\n        return _convertToShares(assets, Math.Rounding.Down);\n    }\n\n    /** @dev See {IERC4626-previewMint}. */\n    function previewMint(uint256 shares) public view virtual override returns (uint256) {\n        return _convertToAssets(shares, Math.Rounding.Up);\n    }\n\n    /** @dev See {IERC4626-previewWithdraw}. */\n    function previewWithdraw(uint256 assets) public view virtual override returns (uint256) {\n        return _convertToShares(assets, Math.Rounding.Up);\n    }\n\n    /** @dev See {IERC4626-previewRedeem}. */\n    function previewRedeem(uint256 shares) public view virtual override returns (uint256) {\n        return _convertToAssets(shares, Math.Rounding.Down);\n    }\n\n    /** @dev See {IERC4626-deposit}. */\n    function deposit(uint256 assets, address receiver) public virtual override returns (uint256) {\n        require(assets <= maxDeposit(receiver), \"ERC4626: deposit more than max\");\n\n        uint256 shares = previewDeposit(assets);\n        _deposit(_msgSender(), receiver, assets, shares);\n\n        return shares;\n    }\n\n    /** @dev See {IERC4626-mint}. */\n    function mint(uint256 shares, address receiver) public virtual override returns (uint256) {\n        require(shares <= maxMint(receiver), \"ERC4626: mint more than max\");\n\n        uint256 assets = previewMint(shares);\n        _deposit(_msgSender(), receiver, assets, shares);\n\n        return assets;\n    }\n\n    /** @dev See {IERC4626-withdraw}. */\n    function withdraw(\n        uint256 assets,\n        address receiver,\n        address owner\n    ) public virtual override returns (uint256) {\n        require(assets <= maxWithdraw(owner), \"ERC4626: withdraw more than max\");\n\n        uint256 shares = previewWithdraw(assets);\n        _withdraw(_msgSender(), receiver, owner, assets, shares);\n\n        return shares;\n    }\n\n    /** @dev See {IERC4626-redeem}. */\n    function redeem(\n        uint256 shares,\n        address receiver,\n        address owner\n    ) public virtual override returns (uint256) {\n        require(shares <= maxRedeem(owner), \"ERC4626: redeem more than max\");\n\n        uint256 assets = previewRedeem(shares);\n        _withdraw(_msgSender(), receiver, owner, assets, shares);\n\n        return assets;\n    }\n\n    /**\n     * @dev Internal conversion function (from assets to shares) with support for rounding direction.\n     *\n     * Will revert if assets > 0, totalSupply > 0 and totalAssets = 0. That corresponds to a case where any asset\n     * would represent an infinite amount of shares.\n     */\n    function _convertToShares(uint256 assets, Math.Rounding rounding) internal view virtual returns (uint256 shares) {\n        uint256 supply = totalSupply();\n        return\n            (assets == 0 || supply == 0)\n                ? _initialConvertToShares(assets, rounding)\n                : assets.mulDiv(supply, totalAssets(), rounding);\n    }\n\n    /**\n     * @dev Internal conversion function (from assets to shares) to apply when the vault is empty.\n     *\n     * NOTE: Make sure to keep this function consistent with {_initialConvertToAssets} when overriding it.\n     */\n    function _initialConvertToShares(\n        uint256 assets,\n        Math.Rounding /*rounding*/\n    ) internal view virtual returns (uint256 shares) {\n        return assets;\n    }\n\n    /**\n     * @dev Internal conversion function (from shares to assets) with support for rounding direction.\n     */\n    function _convertToAssets(uint256 shares, Math.Rounding rounding) internal view virtual returns (uint256 assets) {\n        uint256 supply = totalSupply();\n        return\n            (supply == 0) ? _initialConvertToAssets(shares, rounding) : shares.mulDiv(totalAssets(), supply, rounding);\n    }\n\n    /**\n     * @dev Internal conversion function (from shares to assets) to apply when the vault is empty.\n     *\n     * NOTE: Make sure to keep this function consistent with {_initialConvertToShares} when overriding it.\n     */\n    function _initialConvertToAssets(\n        uint256 shares,\n        Math.Rounding /*rounding*/\n    ) internal view virtual returns (uint256 assets) {\n        return shares;\n    }\n\n    /**\n     * @dev Deposit/mint common workflow.\n     */\n    function _deposit(\n        address caller,\n        address receiver,\n        uint256 assets,\n        uint256 shares\n    ) internal virtual {\n        // If _asset is ERC777, `transferFrom` can trigger a reenterancy BEFORE the transfer happens through the\n        // `tokensToSend` hook. On the other hand, the `tokenReceived` hook, that is triggered after the transfer,\n        // calls the vault, which is assumed not malicious.\n        //\n        // Conclusion: we need to do the transfer before we mint so that any reentrancy would happen before the\n        // assets are transferred and before the shares are minted, which is a valid state.\n        // slither-disable-next-line reentrancy-no-eth\n        SafeERC20.safeTransferFrom(_asset, caller, address(this), assets);\n        _mint(receiver, shares);\n\n        emit Deposit(caller, receiver, assets, shares);\n    }\n\n    /**\n     * @dev Withdraw/redeem common workflow.\n     */\n    function _withdraw(\n        address caller,\n        address receiver,\n        address owner,\n        uint256 assets,\n        uint256 shares\n    ) internal virtual {\n        if (caller != owner) {\n            _spendAllowance(owner, caller, shares);\n        }\n\n        // If _asset is ERC777, `transfer` can trigger a reentrancy AFTER the transfer happens through the\n        // `tokensReceived` hook. On the other hand, the `tokensToSend` hook, that is triggered before the transfer,\n        // calls the vault, which is assumed not malicious.\n        //\n        // Conclusion: we need to do the transfer after the burn so that any reentrancy would happen after the\n        // shares are burned and after the assets are transferred, which is a valid state.\n        _burn(owner, shares);\n        SafeERC20.safeTransfer(_asset, receiver, assets);\n\n        emit Withdraw(caller, receiver, owner, assets, shares);\n    }\n\n    function _isVaultCollateralized() private view returns (bool) {\n        return totalAssets() > 0 || totalSupply() == 0;\n    }\n}\n"
    },
    "ERC20.sol": {
      "content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.8.0) (token/ERC20/ERC20.sol)\n\npragma solidity ^0.8.0;\n\nimport \"IERC20.sol\";\nimport \"IERC20Metadata.sol\";\nimport \"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.openzeppelin.com/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 `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(\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            // 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(\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"
    },
    "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"
    },
    "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"
    },
    "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"
    },
    "SafeERC20.sol": {
      "content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.8.0) (token/ERC20/utils/SafeERC20.sol)\n\npragma solidity ^0.8.0;\n\nimport \"IERC20.sol\";\nimport \"draft-IERC20Permit.sol\";\nimport \"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    function safePermit(\n        IERC20Permit 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(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"
    },
    "draft-IERC20Permit.sol": {
      "content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (token/ERC20/extensions/draft-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 */\ninterface IERC20Permit {\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    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"
    },
    "Address.sol": {
      "content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.8.0) (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 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(\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        (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"
    },
    "IERC4626.sol": {
      "content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.8.0) (interfaces/IERC4626.sol)\n\npragma solidity ^0.8.0;\n\nimport \"IERC20.sol\";\nimport \"IERC20Metadata.sol\";\n\n/**\n * @dev Interface of the ERC4626 \"Tokenized Vault Standard\", as defined in\n * https://eips.ethereum.org/EIPS/eip-4626[ERC-4626].\n *\n * _Available since v4.7._\n */\ninterface IERC4626 is IERC20, IERC20Metadata {\n    event Deposit(address indexed sender, address indexed owner, uint256 assets, uint256 shares);\n\n    event Withdraw(\n        address indexed sender,\n        address indexed receiver,\n        address indexed owner,\n        uint256 assets,\n        uint256 shares\n    );\n\n    /**\n     * @dev Returns the address of the underlying token used for the Vault for accounting, depositing, and withdrawing.\n     *\n     * - MUST be an ERC-20 token contract.\n     * - MUST NOT revert.\n     */\n    function asset() external view returns (address assetTokenAddress);\n\n    /**\n     * @dev Returns the total amount of the underlying asset that is “managed” by Vault.\n     *\n     * - SHOULD include any compounding that occurs from yield.\n     * - MUST be inclusive of any fees that are charged against assets in the Vault.\n     * - MUST NOT revert.\n     */\n    function totalAssets() external view returns (uint256 totalManagedAssets);\n\n    /**\n     * @dev Returns the amount of shares that the Vault would exchange for the amount of assets provided, in an ideal\n     * scenario where all the conditions are met.\n     *\n     * - MUST NOT be inclusive of any fees that are charged against assets in the Vault.\n     * - MUST NOT show any variations depending on the caller.\n     * - MUST NOT reflect slippage or other on-chain conditions, when performing the actual exchange.\n     * - MUST NOT revert.\n     *\n     * NOTE: This calculation MAY NOT reflect the “per-user” price-per-share, and instead should reflect the\n     * “average-user’s” price-per-share, meaning what the average user should expect to see when exchanging to and\n     * from.\n     */\n    function convertToShares(uint256 assets) external view returns (uint256 shares);\n\n    /**\n     * @dev Returns the amount of assets that the Vault would exchange for the amount of shares provided, in an ideal\n     * scenario where all the conditions are met.\n     *\n     * - MUST NOT be inclusive of any fees that are charged against assets in the Vault.\n     * - MUST NOT show any variations depending on the caller.\n     * - MUST NOT reflect slippage or other on-chain conditions, when performing the actual exchange.\n     * - MUST NOT revert.\n     *\n     * NOTE: This calculation MAY NOT reflect the “per-user” price-per-share, and instead should reflect the\n     * “average-user’s” price-per-share, meaning what the average user should expect to see when exchanging to and\n     * from.\n     */\n    function convertToAssets(uint256 shares) external view returns (uint256 assets);\n\n    /**\n     * @dev Returns the maximum amount of the underlying asset that can be deposited into the Vault for the receiver,\n     * through a deposit call.\n     *\n     * - MUST return a limited value if receiver is subject to some deposit limit.\n     * - MUST return 2 ** 256 - 1 if there is no limit on the maximum amount of assets that may be deposited.\n     * - MUST NOT revert.\n     */\n    function maxDeposit(address receiver) external view returns (uint256 maxAssets);\n\n    /**\n     * @dev Allows an on-chain or off-chain user to simulate the effects of their deposit at the current block, given\n     * current on-chain conditions.\n     *\n     * - MUST return as close to and no more than the exact amount of Vault shares that would be minted in a deposit\n     *   call in the same transaction. I.e. deposit should return the same or more shares as previewDeposit if called\n     *   in the same transaction.\n     * - MUST NOT account for deposit limits like those returned from maxDeposit and should always act as though the\n     *   deposit would be accepted, regardless if the user has enough tokens approved, etc.\n     * - MUST be inclusive of deposit fees. Integrators should be aware of the existence of deposit fees.\n     * - MUST NOT revert.\n     *\n     * NOTE: any unfavorable discrepancy between convertToShares and previewDeposit SHOULD be considered slippage in\n     * share price or some other type of condition, meaning the depositor will lose assets by depositing.\n     */\n    function previewDeposit(uint256 assets) external view returns (uint256 shares);\n\n    /**\n     * @dev Mints shares Vault shares to receiver by depositing exactly amount of underlying tokens.\n     *\n     * - MUST emit the Deposit event.\n     * - MAY support an additional flow in which the underlying tokens are owned by the Vault contract before the\n     *   deposit execution, and are accounted for during deposit.\n     * - MUST revert if all of assets cannot be deposited (due to deposit limit being reached, slippage, the user not\n     *   approving enough underlying tokens to the Vault contract, etc).\n     *\n     * NOTE: most implementations will require pre-approval of the Vault with the Vault’s underlying asset token.\n     */\n    function deposit(uint256 assets, address receiver) external returns (uint256 shares);\n\n    /**\n     * @dev Returns the maximum amount of the Vault shares that can be minted for the receiver, through a mint call.\n     * - MUST return a limited value if receiver is subject to some mint limit.\n     * - MUST return 2 ** 256 - 1 if there is no limit on the maximum amount of shares that may be minted.\n     * - MUST NOT revert.\n     */\n    function maxMint(address receiver) external view returns (uint256 maxShares);\n\n    /**\n     * @dev Allows an on-chain or off-chain user to simulate the effects of their mint at the current block, given\n     * current on-chain conditions.\n     *\n     * - MUST return as close to and no fewer than the exact amount of assets that would be deposited in a mint call\n     *   in the same transaction. I.e. mint should return the same or fewer assets as previewMint if called in the\n     *   same transaction.\n     * - MUST NOT account for mint limits like those returned from maxMint and should always act as though the mint\n     *   would be accepted, regardless if the user has enough tokens approved, etc.\n     * - MUST be inclusive of deposit fees. Integrators should be aware of the existence of deposit fees.\n     * - MUST NOT revert.\n     *\n     * NOTE: any unfavorable discrepancy between convertToAssets and previewMint SHOULD be considered slippage in\n     * share price or some other type of condition, meaning the depositor will lose assets by minting.\n     */\n    function previewMint(uint256 shares) external view returns (uint256 assets);\n\n    /**\n     * @dev Mints exactly shares Vault shares to receiver by depositing amount of underlying tokens.\n     *\n     * - MUST emit the Deposit event.\n     * - MAY support an additional flow in which the underlying tokens are owned by the Vault contract before the mint\n     *   execution, and are accounted for during mint.\n     * - MUST revert if all of shares cannot be minted (due to deposit limit being reached, slippage, the user not\n     *   approving enough underlying tokens to the Vault contract, etc).\n     *\n     * NOTE: most implementations will require pre-approval of the Vault with the Vault’s underlying asset token.\n     */\n    function mint(uint256 shares, address receiver) external returns (uint256 assets);\n\n    /**\n     * @dev Returns the maximum amount of the underlying asset that can be withdrawn from the owner balance in the\n     * Vault, through a withdraw call.\n     *\n     * - MUST return a limited value if owner is subject to some withdrawal limit or timelock.\n     * - MUST NOT revert.\n     */\n    function maxWithdraw(address owner) external view returns (uint256 maxAssets);\n\n    /**\n     * @dev Allows an on-chain or off-chain user to simulate the effects of their withdrawal at the current block,\n     * given current on-chain conditions.\n     *\n     * - MUST return as close to and no fewer than the exact amount of Vault shares that would be burned in a withdraw\n     *   call in the same transaction. I.e. withdraw should return the same or fewer shares as previewWithdraw if\n     *   called\n     *   in the same transaction.\n     * - MUST NOT account for withdrawal limits like those returned from maxWithdraw and should always act as though\n     *   the withdrawal would be accepted, regardless if the user has enough shares, etc.\n     * - MUST be inclusive of withdrawal fees. Integrators should be aware of the existence of withdrawal fees.\n     * - MUST NOT revert.\n     *\n     * NOTE: any unfavorable discrepancy between convertToShares and previewWithdraw SHOULD be considered slippage in\n     * share price or some other type of condition, meaning the depositor will lose assets by depositing.\n     */\n    function previewWithdraw(uint256 assets) external view returns (uint256 shares);\n\n    /**\n     * @dev Burns shares from owner and sends exactly assets of underlying tokens to receiver.\n     *\n     * - MUST emit the Withdraw event.\n     * - MAY support an additional flow in which the underlying tokens are owned by the Vault contract before the\n     *   withdraw execution, and are accounted for during withdraw.\n     * - MUST revert if all of assets cannot be withdrawn (due to withdrawal limit being reached, slippage, the owner\n     *   not having enough shares, etc).\n     *\n     * Note that some implementations will require pre-requesting to the Vault before a withdrawal may be performed.\n     * Those methods should be performed separately.\n     */\n    function withdraw(\n        uint256 assets,\n        address receiver,\n        address owner\n    ) external returns (uint256 shares);\n\n    /**\n     * @dev Returns the maximum amount of Vault shares that can be redeemed from the owner balance in the Vault,\n     * through a redeem call.\n     *\n     * - MUST return a limited value if owner is subject to some withdrawal limit or timelock.\n     * - MUST return balanceOf(owner) if owner is not subject to any withdrawal limit or timelock.\n     * - MUST NOT revert.\n     */\n    function maxRedeem(address owner) external view returns (uint256 maxShares);\n\n    /**\n     * @dev Allows an on-chain or off-chain user to simulate the effects of their redeemption at the current block,\n     * given current on-chain conditions.\n     *\n     * - MUST return as close to and no more than the exact amount of assets that would be withdrawn in a redeem call\n     *   in the same transaction. I.e. redeem should return the same or more assets as previewRedeem if called in the\n     *   same transaction.\n     * - MUST NOT account for redemption limits like those returned from maxRedeem and should always act as though the\n     *   redemption would be accepted, regardless if the user has enough shares, etc.\n     * - MUST be inclusive of withdrawal fees. Integrators should be aware of the existence of withdrawal fees.\n     * - MUST NOT revert.\n     *\n     * NOTE: any unfavorable discrepancy between convertToAssets and previewRedeem SHOULD be considered slippage in\n     * share price or some other type of condition, meaning the depositor will lose assets by redeeming.\n     */\n    function previewRedeem(uint256 shares) external view returns (uint256 assets);\n\n    /**\n     * @dev Burns exactly shares from owner and sends assets of underlying tokens to receiver.\n     *\n     * - MUST emit the Withdraw event.\n     * - MAY support an additional flow in which the underlying tokens are owned by the Vault contract before the\n     *   redeem execution, and are accounted for during redeem.\n     * - MUST revert if all of shares cannot be redeemed (due to withdrawal limit being reached, slippage, the owner\n     *   not having enough shares, etc).\n     *\n     * NOTE: some implementations will require pre-requesting to the Vault before a withdrawal may be performed.\n     * Those methods should be performed separately.\n     */\n    function redeem(\n        uint256 shares,\n        address receiver,\n        address owner\n    ) external returns (uint256 assets);\n}\n"
    },
    "Math.sol": {
      "content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.8.0) (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    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(\n        uint256 x,\n        uint256 y,\n        uint256 denominator\n    ) 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                return prod0 / denominator;\n            }\n\n            // Make sure the result is less than 2^256. Also prevents denominator == 0.\n            require(denominator > prod1);\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(\n        uint256 x,\n        uint256 y,\n        uint256 denominator,\n        Rounding rounding\n    ) 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 10, 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 * 8) < value ? 1 : 0);\n        }\n    }\n}\n"
    },
    "AssetConverter.sol": {
      "content": "pragma solidity 0.8.15;\n\n\nimport \"IERC20.sol\";\nimport \"Ownable.sol\";\nimport \"SafeERC20.sol\";\n\n\ninterface IConverter\n{\n\tfunction swap(address source, address destination, uint256 value, address beneficiary) external returns (uint256);\n\n\tfunction previewSwap(address source, address destination, uint256 value) external returns (uint256);\n}\n\n\ncontract AssetConverter is Ownable\n{\n\tusing SafeERC20 for IERC20;\n\t// sourve => destination converter\n\tmapping (address => mapping(address => IConverter)) public converters;\n\n\tfunction updateConverter(address source, address destination, address newConverter) external onlyOwner\n\t{\n\t\tif (IERC20(source).allowance(address(this), newConverter) == 0) {\n\t\t\tIERC20(source).safeIncreaseAllowance(newConverter, type(uint256).max);\n\t\t}\n\t\tconverters[source][destination] = IConverter(newConverter);\n\t}\n\n\tfunction swap(address source, address destination, uint256 value) external returns (uint256)\n\t{\n\t\tIConverter converter = converters[source][destination];\n\t\tIERC20(source).safeTransferFrom(msg.sender, address(converter), value);\n\t\treturn converter.swap(source, destination, value, msg.sender);\n\t}\n\n\tfunction previewSwap(address source, address destination, uint256 value) external returns (uint256) {\n\t\treturn converters[source][destination].previewSwap(source, destination, value);\n\t}\n}"
    },
    "Ownable.sol": {
      "content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (access/Ownable.sol)\n\npragma solidity ^0.8.0;\n\nimport \"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 Throws if called by any account other than the owner.\n     */\n    modifier onlyOwner() {\n        _checkOwner();\n        _;\n    }\n\n    /**\n     * @dev Returns the address of the current owner.\n     */\n    function owner() public view virtual returns (address) {\n        return _owner;\n    }\n\n    /**\n     * @dev Throws if the sender is not the owner.\n     */\n    function _checkOwner() internal view virtual {\n        require(owner() == _msgSender(), \"Ownable: caller is not the owner\");\n    }\n\n    /**\n     * @dev Leaves the contract without owner. It will not be possible to call\n     * `onlyOwner` functions 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"
    },
    "CurveMetapoolLibrary.sol": {
      "content": "pragma solidity 0.8.15;\n\nimport \"IERC20Metadata.sol\";\n\n\ninterface ICurvePool {\n    function get_virtual_price() external view returns (uint256);\n    function calc_withdraw_one_coin(uint256 _token_amount, int128 i) external view returns(uint256);\n    function remove_liquidity_one_coin(uint256 _token_amount, int128 i, uint256 min_amount) external;\n}\n\ninterface ICurveMetapoolFactoryZap {\n    function remove_liquidity_one_coin(\n        address pool,\n        uint256 token_amount,\n        int128 index,\n        uint256 min_amount\n    ) external returns (uint256);\n}\n\ninterface ICurveMetapoolZap {\n    function remove_liquidity_one_coin(\n        uint256 token_amount,\n        int128 index,\n        uint256 min_amount\n    ) external returns (uint256);\n}\n\ninterface ICurveMetapoolFactoryZap3Assets {\n    function add_liquidity(\n        address pool,\n        uint256[3] memory amounts,\n        uint256 min_mint_amount\n    ) external returns (uint256);\n}\n\ninterface ICurveMetapoolZap3Assets {\n    function add_liquidity(\n        uint256[3] memory amounts,\n        uint256 min_mint_amount\n    ) external returns (uint256);\n}\n\ninterface ICurveMetapoolFactoryZap4Assets {\n    function add_liquidity(\n        address pool,\n        uint256[4] memory amounts,\n        uint256 min_mint_amount\n    ) external returns (uint256);\n}\n\ninterface ICurveMetapoolZap4Assets {\n    function add_liquidity(\n        uint256[4] memory amounts,\n        uint256 min_mint_amount\n    ) external returns (uint256);\n}\n\ninterface ICurveMetapoolFactoryZap5Assets {\n    function add_liquidity(\n        address pool,\n        uint256[5] memory amounts,\n        uint256 min_mint_amount\n    ) external returns (uint256);\n}\n\ninterface ICurveMetapoolZap5Assets {\n    function add_liquidity(\n        uint256[5] memory amounts,\n        uint256 min_mint_amount\n    ) external returns (uint256);\n}\n\nlibrary CurveMetapoolLibrary {\n    struct CurveMetapool {\n        address zapAddress;\n        address poolAddress;\n        uint256 assetsCount;\n        uint128 assetIndex;\n        bool isFactoryZap;\n    }\n\n    function getVirtualPrice(CurveMetapool storage pool)\n        internal\n        view\n        returns (uint256)\n    {\n        return ICurvePool(pool.poolAddress).get_virtual_price();\n    }\n\n    function addLiquidity(CurveMetapool storage pool, uint256 amount)\n        internal\n        returns (uint256 lpAmount)\n    {\n        if (pool.assetsCount == 3) {\n            uint256[3] memory amounts;\n            amounts[pool.assetIndex] = amount;\n            if (pool.isFactoryZap) {\n                lpAmount = ICurveMetapoolFactoryZap3Assets(pool.zapAddress).add_liquidity(\n                    pool.poolAddress,\n                    amounts,\n                    0\n                );\n            } else {\n                lpAmount = ICurveMetapoolZap3Assets(pool.zapAddress).add_liquidity(\n                    amounts,\n                    0\n                );\n            }\n        } else if (pool.assetsCount == 4) {\n            uint256[4] memory amounts;\n            amounts[pool.assetIndex] = amount;\n            if (pool.isFactoryZap) {\n                lpAmount = ICurveMetapoolFactoryZap4Assets(pool.zapAddress).add_liquidity(\n                    pool.poolAddress,\n                    amounts,\n                    0\n                );\n            } else {\n                lpAmount = ICurveMetapoolZap4Assets(pool.zapAddress).add_liquidity(\n                    amounts,\n                    0\n                );\n            }\n        } else if (pool.assetsCount == 5) {\n            uint256[5] memory amounts;\n            amounts[pool.assetIndex] = amount;\n            if (pool.isFactoryZap) {\n                lpAmount = ICurveMetapoolFactoryZap5Assets(pool.zapAddress).add_liquidity(\n                    pool.poolAddress,\n                    amounts,\n                    0\n                );\n            } else {\n                lpAmount = ICurveMetapoolZap5Assets(pool.zapAddress).add_liquidity(\n                    amounts,\n                    0\n                );\n            }\n        }\n    }\n\n    function removeLiquidity(CurveMetapool storage pool, uint256 lpAmount)\n        internal\n        returns (uint256 amount)\n    {\n        if (ICurvePool(pool.poolAddress).calc_withdraw_one_coin(lpAmount, 1) == 0) {\n            ICurvePool(pool.poolAddress).remove_liquidity_one_coin(lpAmount, 1, 0);\n            return 0;\n        }\n        if (pool.isFactoryZap) {\n            amount = ICurveMetapoolFactoryZap(pool.zapAddress).remove_liquidity_one_coin(\n                pool.poolAddress,\n                lpAmount,\n                int128(pool.assetIndex),\n                0\n            );\n        } else {\n            amount = ICurveMetapoolZap(pool.zapAddress).remove_liquidity_one_coin(\n                lpAmount,\n                int128(pool.assetIndex),\n                0\n            );\n        }\n    }\n}\n"
    },
    "PricePerTokenMixin.sol": {
      "content": "pragma solidity 0.8.15;\n\nimport \"ERC4626.sol\";\n\nabstract contract PricePerTokenMixin is ERC4626 {\n    function pricePerToken() public view returns (uint256)\n\t{\n\t\treturn convertToAssets(10 ** decimals());\n\t}\n}"
    }
  },
  "settings": {
    "evmVersion": "istanbul",
    "optimizer": {
      "enabled": true,
      "runs": 999999
    },
    "libraries": {
      "WrappedERC4626CurveMetapoolConvex.sol": {}
    },
    "outputSelection": {
      "*": {
        "*": [
          "evm.bytecode",
          "evm.deployedBytecode",
          "devdoc",
          "userdoc",
          "metadata",
          "abi"
        ]
      }
    }
  }
}