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{
"language": "Solidity",
"sources": {
"@mean-finance/transformers/solidity/contracts/transformers/wstETHTransformer.sol": {
"content": "// SPDX-License-Identifier: GPL-2.0-or-later\npragma solidity >=0.8.7 <0.9.0;\n\nimport '@openzeppelin/contracts/interfaces/IERC20.sol';\nimport '@openzeppelin/contracts/utils/math/Math.sol';\nimport './BaseTransformer.sol';\n\n/// @title An implementaton of `ITransformer` for wstETH <=> stETH\ncontract wstETHTransformer is BaseTransformer {\n using SafeERC20 for IwstETH;\n using SafeERC20 for IstETH;\n\n /// @notice The address of the stETH contract\n IstETH public immutable stETH;\n\n constructor(IstETH _stETH, address _governor) Governable(_governor) {\n stETH = _stETH;\n }\n\n /// @inheritdoc ITransformer\n function getUnderlying(address) external view returns (address[] memory) {\n return _toSingletonArray(stETH);\n }\n\n /// @inheritdoc ITransformer\n function calculateTransformToUnderlying(address, uint256 _amountDependent) external view returns (UnderlyingAmount[] memory) {\n uint256 _amountUnderlying = stETH.getPooledEthByShares(_amountDependent);\n return _toSingletonArray(stETH, _amountUnderlying);\n }\n\n /// @inheritdoc ITransformer\n function calculateTransformToDependent(address, UnderlyingAmount[] calldata _underlying) external view returns (uint256 _amountDependent) {\n if (_underlying.length != 1) revert InvalidUnderlyingInput();\n _amountDependent = stETH.getSharesByPooledEth(_underlying[0].amount);\n }\n\n /// @inheritdoc ITransformer\n function calculateNeededToTransformToUnderlying(address, UnderlyingAmount[] calldata _expectedUnderlying)\n external\n view\n returns (uint256 _neededDependent)\n {\n if (_expectedUnderlying.length != 1) revert InvalidUnderlyingInput();\n _neededDependent = _calculateNeededToTransformToUnderlying(_expectedUnderlying[0].amount);\n }\n\n /// @inheritdoc ITransformer\n function calculateNeededToTransformToDependent(address, uint256 _expectedDependent)\n external\n view\n returns (UnderlyingAmount[] memory _neededUnderlying)\n {\n uint256 _neededUnderlyingAmount = _calculateNeededToTransformToDependent(_expectedDependent);\n return _toSingletonArray(stETH, _neededUnderlyingAmount);\n }\n\n /// @inheritdoc ITransformer\n function transformToUnderlying(\n address _dependent,\n uint256 _amountDependent,\n address _recipient,\n UnderlyingAmount[] calldata _minAmountOut,\n uint256 _deadline\n ) external payable checkDeadline(_deadline) returns (UnderlyingAmount[] memory) {\n if (_minAmountOut.length != 1) revert InvalidUnderlyingInput();\n uint256 _amountUnderlying = _takewstETHFromSenderAndUnwrap(_dependent, _amountDependent, _recipient);\n if (_minAmountOut[0].amount > _amountUnderlying) revert ReceivedLessThanExpected(_amountUnderlying);\n return _toSingletonArray(stETH, _amountUnderlying);\n }\n\n /// @inheritdoc ITransformer\n function transformToDependent(\n address _dependent,\n UnderlyingAmount[] calldata _underlying,\n address _recipient,\n uint256 _minAmountOut,\n uint256 _deadline\n ) external payable checkDeadline(_deadline) returns (uint256 _amountDependent) {\n if (_underlying.length != 1) revert InvalidUnderlyingInput();\n _amountDependent = _takestETHFromSenderAndWrap(_dependent, _underlying[0].amount, _recipient);\n if (_minAmountOut > _amountDependent) revert ReceivedLessThanExpected(_amountDependent);\n }\n\n /// @inheritdoc ITransformer\n function transformToExpectedUnderlying(\n address _dependent,\n UnderlyingAmount[] calldata _expectedUnderlying,\n address _recipient,\n uint256 _maxAmountIn,\n uint256 _deadline\n ) external payable checkDeadline(_deadline) returns (uint256 _spentDependent) {\n if (_expectedUnderlying.length != 1) revert InvalidUnderlyingInput();\n uint256 _expectedUnderlyingAmount = _expectedUnderlying[0].amount;\n _spentDependent = _calculateNeededToTransformToUnderlying(_expectedUnderlyingAmount);\n if (_spentDependent > _maxAmountIn) revert NeededMoreThanExpected(_spentDependent);\n uint256 _receivedUnderlying = _takewstETHFromSenderAndUnwrap(_dependent, _spentDependent, _recipient);\n if (_expectedUnderlyingAmount > _receivedUnderlying) revert ReceivedLessThanExpected(_receivedUnderlying);\n }\n\n /// @inheritdoc ITransformer\n function transformToExpectedDependent(\n address _dependent,\n uint256 _expectedDependent,\n address _recipient,\n UnderlyingAmount[] calldata _maxAmountIn,\n uint256 _deadline\n ) external payable checkDeadline(_deadline) returns (UnderlyingAmount[] memory _spentUnderlying) {\n if (_maxAmountIn.length != 1) revert InvalidUnderlyingInput();\n uint256 _neededUnderlyingAmount = _calculateNeededToTransformToDependent(_expectedDependent);\n if (_neededUnderlyingAmount > _maxAmountIn[0].amount) revert NeededMoreThanExpected(_neededUnderlyingAmount);\n uint256 _receivedDependent = _takestETHFromSenderAndWrap(_dependent, _neededUnderlyingAmount, _recipient);\n if (_expectedDependent > _receivedDependent) revert ReceivedLessThanExpected(_receivedDependent);\n return _toSingletonArray(stETH, _neededUnderlyingAmount);\n }\n\n function _calculateNeededToTransformToUnderlying(uint256 _expectedUnderlying) internal view returns (uint256 _neededDependent) {\n // Since stETH contracts rounds down, we do the math here and round up\n uint256 _totalSuppy = stETH.totalSupply();\n uint256 _totalShares = stETH.getTotalShares();\n _neededDependent = Math.mulDiv(_expectedUnderlying, _totalShares, _totalSuppy, Math.Rounding.Up);\n }\n\n function _calculateNeededToTransformToDependent(uint256 _expectedDependent) internal view returns (uint256 _neededUnderlying) {\n // Since stETH contracts rounds down, we do the math here and round up\n uint256 _totalShares = stETH.getTotalShares();\n uint256 _totalSuppy = stETH.totalSupply();\n _neededUnderlying = Math.mulDiv(_expectedDependent, _totalSuppy, _totalShares, Math.Rounding.Up);\n }\n\n function _takewstETHFromSenderAndUnwrap(\n address _dependent,\n uint256 _amount,\n address _recipient\n ) internal returns (uint256 _underlyingAmount) {\n IwstETH(_dependent).safeTransferFrom(msg.sender, address(this), _amount);\n _underlyingAmount = IwstETH(_dependent).unwrap(_amount);\n stETH.safeTransfer(_recipient, _underlyingAmount);\n }\n\n function _takestETHFromSenderAndWrap(\n address _dependent,\n uint256 _amount,\n address _recipient\n ) internal returns (uint256 _dependentAmount) {\n stETH.safeTransferFrom(msg.sender, address(this), _amount);\n stETH.approve(_dependent, _amount);\n _dependentAmount = IwstETH(_dependent).wrap(_amount);\n IwstETH(_dependent).safeTransfer(_recipient, _dependentAmount);\n }\n\n function _toSingletonArray(IstETH _underlying) internal pure returns (address[] memory _underlyingArray) {\n _underlyingArray = new address[](1);\n _underlyingArray[0] = address(_underlying);\n }\n\n function _toSingletonArray(IstETH _underlying, uint256 _amount) internal pure returns (UnderlyingAmount[] memory _amounts) {\n _amounts = new UnderlyingAmount[](1);\n _amounts[0] = UnderlyingAmount({underlying: address(_underlying), amount: _amount});\n }\n}\n\ninterface IstETH is IERC20 {\n /**\n * @return The total amount of stETH\n */\n function totalSupply() external view returns (uint256);\n\n /**\n * @return The total amount of internal shares on stETH\n * @dev This has nothing to do with wstETH supply\n */\n function getTotalShares() external view returns (uint256);\n\n /**\n * @return The amount of Ether that corresponds to `sharesAmount` token shares.\n */\n function getPooledEthByShares(uint256 sharesAmount) external view returns (uint256);\n\n /**\n * @return The amount of shares that corresponds to `stEthAmount` protocol-controlled Ether.\n */\n function getSharesByPooledEth(uint256 ethAmount) external view returns (uint256);\n}\n\ninterface IwstETH is IERC20 {\n /**\n * @notice Exchanges stETH to wstETH\n * @param _stETHAmount amount of stETH to wrap in exchange for wstETH\n * @dev Requirements:\n * - `_stETHAmount` must be non-zero\n * - msg.sender must approve at least `_stETHAmount` stETH to this\n * contract.\n * - msg.sender must have at least `_stETHAmount` of stETH.\n * User should first approve _stETHAmount to the WstETH contract\n * @return Amount of wstETH user receives after wrap\n */\n function wrap(uint256 _stETHAmount) external returns (uint256);\n\n /**\n * @notice Exchanges wstETH to stETH\n * @param _wstETHAmount amount of wstETH to uwrap in exchange for stETH\n * @dev Requirements:\n * - `_wstETHAmount` must be non-zero\n * - msg.sender must have at least `_wstETHAmount` wstETH.\n * @return Amount of stETH user receives after unwrap\n */\n function unwrap(uint256 _wstETHAmount) external returns (uint256);\n}\n"
},
"@openzeppelin/contracts/interfaces/IERC20.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (interfaces/IERC20.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../token/ERC20/IERC20.sol\";\n"
},
"@openzeppelin/contracts/utils/math/Math.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (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. It the number is not a perfect square, the value is rounded down.\n *\n * Inspired by Henry S. Warren, Jr.'s \"Hacker's Delight\" (Chapter 11).\n */\n function sqrt(uint256 a) internal pure returns (uint256) {\n if (a == 0) {\n return 0;\n }\n\n // For our first guess, we get the biggest power of 2 which is smaller than the square root of the target.\n // We know that the \"msb\" (most significant bit) of our target number `a` is a power of 2 such that we have\n // `msb(a) <= a < 2*msb(a)`.\n // We also know that `k`, the position of the most significant bit, is such that `msb(a) = 2**k`.\n // This gives `2**k < a <= 2**(k+1)` → `2**(k/2) <= sqrt(a) < 2 ** (k/2+1)`.\n // Using an algorithm similar to the msb conmputation, we are able to compute `result = 2**(k/2)` which is a\n // good first aproximation of `sqrt(a)` with at least 1 correct bit.\n uint256 result = 1;\n uint256 x = a;\n if (x >> 128 > 0) {\n x >>= 128;\n result <<= 64;\n }\n if (x >> 64 > 0) {\n x >>= 64;\n result <<= 32;\n }\n if (x >> 32 > 0) {\n x >>= 32;\n result <<= 16;\n }\n if (x >> 16 > 0) {\n x >>= 16;\n result <<= 8;\n }\n if (x >> 8 > 0) {\n x >>= 8;\n result <<= 4;\n }\n if (x >> 4 > 0) {\n x >>= 4;\n result <<= 2;\n }\n if (x >> 2 > 0) {\n result <<= 1;\n }\n\n // At this point `result` is an estimation with one bit of precision. We know the true value is a uint128,\n // since it is the square root of a uint256. Newton's method converges quadratically (precision doubles at\n // every iteration). We thus need at most 7 iteration to turn our partial result with one bit of precision\n // into the expected uint128 result.\n unchecked {\n result = (result + a / result) >> 1;\n result = (result + a / result) >> 1;\n result = (result + a / result) >> 1;\n result = (result + a / result) >> 1;\n result = (result + a / result) >> 1;\n result = (result + a / result) >> 1;\n result = (result + a / result) >> 1;\n return min(result, a / result);\n }\n }\n\n /**\n * @notice Calculates sqrt(a), following the selected rounding direction.\n */\n function sqrt(uint256 a, Rounding rounding) internal pure returns (uint256) {\n uint256 result = sqrt(a);\n if (rounding == Rounding.Up && result * result < a) {\n result += 1;\n }\n return result;\n }\n}\n"
},
"@mean-finance/transformers/solidity/contracts/transformers/BaseTransformer.sol": {
"content": "// SPDX-License-Identifier: GPL-2.0-or-later\n\npragma solidity >=0.8.7 <0.9.0;\n\nimport '@openzeppelin/contracts/utils/introspection/ERC165.sol';\nimport '../../interfaces/ITransformer.sol';\nimport '../utils/CollectableDust.sol';\nimport '../utils/Multicall.sol';\n\n/// @title A base implementation of `ITransformer` that implements `CollectableDust` and `Multicall`\nabstract contract BaseTransformer is CollectableDust, Multicall, ERC165, ITransformer {\n /// @inheritdoc IERC165\n function supportsInterface(bytes4 _interfaceId) public view virtual override returns (bool) {\n return\n _interfaceId == type(ITransformer).interfaceId ||\n _interfaceId == type(IGovernable).interfaceId ||\n _interfaceId == type(ICollectableDust).interfaceId ||\n _interfaceId == type(IMulticall).interfaceId ||\n super.supportsInterface(_interfaceId);\n }\n\n modifier checkDeadline(uint256 _deadline) {\n if (block.timestamp > _deadline) revert TransactionExpired();\n _;\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"
},
"@openzeppelin/contracts/utils/introspection/ERC165.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (utils/introspection/ERC165.sol)\n\npragma solidity ^0.8.0;\n\nimport \"./IERC165.sol\";\n\n/**\n * @dev Implementation of the {IERC165} interface.\n *\n * Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check\n * for the additional interface id that will be supported. For example:\n *\n * ```solidity\n * function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {\n * return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId);\n * }\n * ```\n *\n * Alternatively, {ERC165Storage} provides an easier to use but more expensive implementation.\n */\nabstract contract ERC165 is IERC165 {\n /**\n * @dev See {IERC165-supportsInterface}.\n */\n function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {\n return interfaceId == type(IERC165).interfaceId;\n }\n}\n"
},
"@mean-finance/transformers/solidity/contracts/utils/Multicall.sol": {
"content": "// SPDX-License-Identifier: GPL-2.0-or-later\n\npragma solidity >=0.8.7 <0.9.0;\n\nimport '@openzeppelin/contracts/utils/Address.sol';\nimport '../../interfaces/utils/IMulticall.sol';\n\n/**\n * @dev Adding this contract will enable batching calls. This is basically the same as Open Zeppelin's\n * Multicall contract, but we have made it payable. Any contract that uses this Multicall version\n * should be very careful when using msg.value.\n * For more context, read: https://github.com/Uniswap/v3-periphery/issues/52\n */\nabstract contract Multicall is IMulticall {\n /// @inheritdoc IMulticall\n function multicall(bytes[] calldata data) external payable returns (bytes[] memory results) {\n results = new bytes[](data.length);\n for (uint256 i; i < data.length; i++) {\n results[i] = Address.functionDelegateCall(address(this), data[i]);\n }\n return results;\n }\n}\n"
},
"@mean-finance/transformers/solidity/interfaces/ITransformer.sol": {
"content": "// SPDX-License-Identifier: GPL-2.0-or-later\npragma solidity >=0.5.0;\n\n/**\n * @title A contract that can map between one token and their underlying counterparts, and vice-versa\n * @notice This contract defines the concept of dependent tokens. These are tokens that depend on one or more underlying tokens,\n * they can't exist on their own. This concept can apply to some known types of tokens, such as:\n * - Wrappers (WETH/WMATIC/WBNB)\n * - ERC-4626 tokens\n * - LP tokens\n * Now, transformers are smart contract that knows how to map dependent tokens into their underlying counterparts,\n * and vice-versa. We are doing this so that we can abstract the way tokens can be transformed between each other\n * @dev All non-view functions were made payable, so that they could be multicalled when msg.value > 0\n */\ninterface ITransformer {\n /// @notice An amount of an underlying token\n struct UnderlyingAmount {\n address underlying;\n uint256 amount;\n }\n\n /// @notice Thrown when the underlying input is not valid for the used transformer\n error InvalidUnderlyingInput();\n\n /// @notice Thrown when the transformation provides less output than expected\n error ReceivedLessThanExpected(uint256 received);\n\n /// @notice Thrown when the transformation needs more input than expected\n error NeededMoreThanExpected(uint256 needed);\n\n /// @notice Thrown when a transaction is executed after the deadline has passed\n error TransactionExpired();\n\n /**\n * @notice Returns the addresses of all the underlying tokens, for the given dependent\n * @dev This function must be unaware of context. The returned values must be the same,\n * regardless of who the caller is\n * @param dependent The address of the dependent token\n * @return The addresses of all the underlying tokens\n */\n function getUnderlying(address dependent) external view returns (address[] memory);\n\n /**\n * @notice Calculates how much would the transformation to the underlying tokens return\n * @dev This function must be unaware of context. The returned values must be the same,\n * regardless of who the caller is\n * @param dependent The address of the dependent token\n * @param amountDependent The amount to transform\n * @return The transformed amount in each of the underlying tokens\n */\n function calculateTransformToUnderlying(address dependent, uint256 amountDependent) external view returns (UnderlyingAmount[] memory);\n\n /**\n * @notice Calculates how much would the transformation to the dependent token return\n * @dev This function must be unaware of context. The returned values must be the same,\n * regardless of who the caller is\n * @param dependent The address of the dependent token\n * @param underlying The amounts of underlying tokens to transform\n * @return amountDependent The transformed amount in the dependent token\n */\n function calculateTransformToDependent(address dependent, UnderlyingAmount[] calldata underlying)\n external\n view\n returns (uint256 amountDependent);\n\n /**\n * @notice Calculates how many dependent tokens are needed to transform to the expected\n * amount of underlying\n * @dev This function must be unaware of context. The returned values must be the same,\n * regardless of who the caller is\n * @param dependent The address of the dependent token\n * @param expectedUnderlying The expected amounts of underlying tokens\n * @return neededDependent The amount of dependent needed\n */\n function calculateNeededToTransformToUnderlying(address dependent, UnderlyingAmount[] calldata expectedUnderlying)\n external\n view\n returns (uint256 neededDependent);\n\n /**\n * @notice Calculates how many underlying tokens are needed to transform to the expected\n * amount of dependent\n * @dev This function must be unaware of context. The returned values must be the same,\n * regardless of who the caller is\n * @param dependent The address of the dependent token\n * @param expectedDependent The expected amount of dependent tokens\n * @return neededUnderlying The amount of underlying tokens needed\n */\n function calculateNeededToTransformToDependent(address dependent, uint256 expectedDependent)\n external\n view\n returns (UnderlyingAmount[] memory neededUnderlying);\n\n /**\n * @notice Executes the transformation to the underlying tokens\n * @param dependent The address of the dependent token\n * @param amountDependent The amount to transform\n * @param recipient The address that would receive the underlying tokens\n * @param minAmountOut The minimum amount of underlying that the caller expects to get. Will fail\n * if less is received. As a general rule, the underlying tokens should\n * be provided in the same order as `getUnderlying` returns them\n * @param deadline A deadline when the transaction becomes invalid\n * @return The transformed amount in each of the underlying tokens\n */\n function transformToUnderlying(\n address dependent,\n uint256 amountDependent,\n address recipient,\n UnderlyingAmount[] calldata minAmountOut,\n uint256 deadline\n ) external payable returns (UnderlyingAmount[] memory);\n\n /**\n * @notice Executes the transformation to the dependent token\n * @param dependent The address of the dependent token\n * @param underlying The amounts of underlying tokens to transform\n * @param recipient The address that would receive the dependent tokens\n * @param minAmountOut The minimum amount of dependent that the caller expects to get. Will fail\n * if less is received\n * @param deadline A deadline when the transaction becomes invalid\n * @return amountDependent The transformed amount in the dependent token\n */\n function transformToDependent(\n address dependent,\n UnderlyingAmount[] calldata underlying,\n address recipient,\n uint256 minAmountOut,\n uint256 deadline\n ) external payable returns (uint256 amountDependent);\n\n /**\n * @notice Transforms dependent tokens to an expected amount of underlying tokens\n * @param dependent The address of the dependent token\n * @param expectedUnderlying The expected amounts of underlying tokens\n * @param recipient The address that would receive the underlying tokens\n * @param maxAmountIn The maximum amount of dependent that the caller is willing to spend.\n * Will fail more is needed\n * @param deadline A deadline when the transaction becomes invalid\n * @return spentDependent The amount of spent dependent tokens\n */\n function transformToExpectedUnderlying(\n address dependent,\n UnderlyingAmount[] calldata expectedUnderlying,\n address recipient,\n uint256 maxAmountIn,\n uint256 deadline\n ) external payable returns (uint256 spentDependent);\n\n /**\n * @notice Transforms underlying tokens to an expected amount of dependent tokens\n * @param dependent The address of the dependent token\n * @param expectedDependent The expected amounts of dependent tokens\n * @param recipient The address that would receive the underlying tokens\n * @param maxAmountIn The maximum amount of underlying that the caller is willing to spend.\n * Will fail more is needed. As a general rule, the underlying tokens should\n * be provided in the same order as `getUnderlying` returns them\n * @param deadline A deadline when the transaction becomes invalid\n * @return spentUnderlying The amount of spent underlying tokens\n */\n function transformToExpectedDependent(\n address dependent,\n uint256 expectedDependent,\n address recipient,\n UnderlyingAmount[] calldata maxAmountIn,\n uint256 deadline\n ) external payable returns (UnderlyingAmount[] memory spentUnderlying);\n}\n"
},
"@mean-finance/transformers/solidity/contracts/utils/CollectableDust.sol": {
"content": "// SPDX-License-Identifier: GPL-2.0-or-later\n\npragma solidity >=0.8.7 <0.9.0;\n\nimport '@openzeppelin/contracts/interfaces/IERC20.sol';\nimport '@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol';\nimport '@openzeppelin/contracts/utils/Address.sol';\nimport '../../interfaces/utils/ICollectableDust.sol';\nimport './Governable.sol';\n\nabstract contract CollectableDust is Governable, ICollectableDust {\n using SafeERC20 for IERC20;\n using Address for address payable;\n\n /// @inheritdoc ICollectableDust\n address public constant PROTOCOL_TOKEN = 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE;\n\n /// @inheritdoc ICollectableDust\n function getBalances(address[] calldata _tokens) external view returns (TokenBalance[] memory _balances) {\n _balances = new TokenBalance[](_tokens.length);\n for (uint256 i; i < _tokens.length; i++) {\n uint256 _balance = _tokens[i] == PROTOCOL_TOKEN ? address(this).balance : IERC20(_tokens[i]).balanceOf(address(this));\n _balances[i] = TokenBalance({token: _tokens[i], balance: _balance});\n }\n }\n\n /// @inheritdoc ICollectableDust\n function sendDust(\n address _token,\n uint256 _amount,\n address _recipient\n ) external onlyGovernor {\n if (_recipient == address(0)) revert DustRecipientIsZeroAddress();\n if (_token == PROTOCOL_TOKEN) {\n payable(_recipient).sendValue(_amount);\n } else {\n IERC20(_token).safeTransfer(_recipient, _amount);\n }\n emit DustSent(_token, _amount, _recipient);\n }\n}\n"
},
"@openzeppelin/contracts/utils/introspection/IERC165.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (utils/introspection/IERC165.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Interface of the ERC165 standard, as defined in the\n * https://eips.ethereum.org/EIPS/eip-165[EIP].\n *\n * Implementers can declare support of contract interfaces, which can then be\n * queried by others ({ERC165Checker}).\n *\n * For an implementation, see {ERC165}.\n */\ninterface IERC165 {\n /**\n * @dev Returns true if this contract implements the interface defined by\n * `interfaceId`. See the corresponding\n * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section]\n * to learn more about how these ids are created.\n *\n * This function call must use less than 30 000 gas.\n */\n function supportsInterface(bytes4 interfaceId) external view returns (bool);\n}\n"
},
"@openzeppelin/contracts/utils/Address.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (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 /// @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}\n"
},
"@mean-finance/transformers/solidity/interfaces/utils/IMulticall.sol": {
"content": "// SPDX-License-Identifier: GPL-2.0-or-later\npragma solidity >=0.8.7 <0.9.0;\n\n/**\n * @title A contract that supports batching calls\n * @notice Contracts with this interface provide a function to batch together multiple calls\n * in a single external call.\n */\ninterface IMulticall {\n /**\n * @notice Receives and executes a batch of function calls on this contract.\n * @param data A list of different function calls to execute\n * @return results The result of executing each of those calls\n */\n function multicall(bytes[] calldata data) external payable returns (bytes[] memory results);\n}\n"
},
"@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (token/ERC20/utils/SafeERC20.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../IERC20.sol\";\nimport \"../extensions/draft-IERC20Permit.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 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"
},
"@mean-finance/transformers/solidity/interfaces/utils/ICollectableDust.sol": {
"content": "// SPDX-License-Identifier: GPL-2.0-or-later\npragma solidity >=0.8.7 <0.9.0;\n\nimport './IGovernable.sol';\n\n/**\n * @title A contract that allows the current governor to withdraw funds\n * @notice This is meant to be used to recover any tokens that were sent to the contract\n * by mistake\n */\ninterface ICollectableDust {\n /// @notice The balance of a given token\n struct TokenBalance {\n address token;\n uint256 balance;\n }\n\n /// @notice Thrown when trying to send dust to the zero address\n error DustRecipientIsZeroAddress();\n\n /**\n * @notice Emitted when dust is sent\n * @param token The token that was sent\n * @param amount The amount that was sent\n * @param recipient The address that received the tokens\n */\n event DustSent(address token, uint256 amount, address recipient);\n\n /**\n * @notice Returns the address of the protocol token\n * @dev Cannot be modified\n * @return The address of the protocol token;\n */\n function PROTOCOL_TOKEN() external view returns (address);\n\n /**\n * @notice Returns the balance of each of the given tokens\n * @dev Meant to be used for off-chain queries\n * @param tokens The tokens to check the balance for, can be ERC20s or the protocol token\n * @return The balances for the given tokens\n */\n function getBalances(address[] calldata tokens) external view returns (TokenBalance[] memory);\n\n /**\n * @notice Sends the given token to the recipient\n * @dev Can only be called by the governor\n * @param token The token to send to the recipient (can be an ERC20 or the protocol token)\n * @param amount The amount to transfer to the recipient\n * @param recipient The address of the recipient\n */\n function sendDust(\n address token,\n uint256 amount,\n address recipient\n ) external;\n}\n"
},
"@mean-finance/transformers/solidity/contracts/utils/Governable.sol": {
"content": "// SPDX-License-Identifier: GPL-2.0-or-later\npragma solidity >=0.8.7 <0.9.0;\n\nimport '../../interfaces/utils/IGovernable.sol';\n\n/**\n * @notice This contract is meant to be used in other contracts. By using this contract,\n * a specific address will be given a \"governor\" role, which basically will be able to\n * control certains aspects of the contract. There are other contracts that do the same,\n * but this contract forces a new governor to accept the role before it's transferred.\n * This is a basically a safety measure to prevent losing access to the contract.\n */\nabstract contract Governable is IGovernable {\n /// @inheritdoc IGovernable\n address public governor;\n\n /// @inheritdoc IGovernable\n address public pendingGovernor;\n\n constructor(address _governor) {\n if (_governor == address(0)) revert GovernorIsZeroAddress();\n governor = _governor;\n }\n\n /// @inheritdoc IGovernable\n function isGovernor(address _account) public view returns (bool) {\n return _account == governor;\n }\n\n /// @inheritdoc IGovernable\n function isPendingGovernor(address _account) public view returns (bool) {\n return _account == pendingGovernor;\n }\n\n /// @inheritdoc IGovernable\n function setPendingGovernor(address _pendingGovernor) external onlyGovernor {\n pendingGovernor = _pendingGovernor;\n emit PendingGovernorSet(_pendingGovernor);\n }\n\n /// @inheritdoc IGovernable\n function acceptPendingGovernor() external onlyPendingGovernor {\n governor = pendingGovernor;\n pendingGovernor = address(0);\n emit PendingGovernorAccepted();\n }\n\n modifier onlyGovernor() {\n if (!isGovernor(msg.sender)) revert OnlyGovernor();\n _;\n }\n\n modifier onlyPendingGovernor() {\n if (!isPendingGovernor(msg.sender)) revert OnlyPendingGovernor();\n _;\n }\n}\n"
},
"@openzeppelin/contracts/token/ERC20/extensions/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"
},
"@mean-finance/transformers/solidity/interfaces/utils/IGovernable.sol": {
"content": "// SPDX-License-Identifier: GPL-2.0-or-later\npragma solidity >=0.8.7 <0.9.0;\n\n/**\n * @title A contract that manages a \"governor\" role\n */\ninterface IGovernable {\n /// @notice Thrown when trying to set the zero address as governor\n error GovernorIsZeroAddress();\n\n /// @notice Thrown when trying to execute an action that only the governor an execute\n error OnlyGovernor();\n\n /// @notice Thrown when trying to execute an action that only the pending governor an execute\n error OnlyPendingGovernor();\n\n /**\n * @notice Emitted when a new pending governor is set\n * @param newPendingGovernor The new pending governor\n */\n event PendingGovernorSet(address newPendingGovernor);\n\n /**\n * @notice Emitted when the pending governor accepts the role and becomes the governor\n */\n event PendingGovernorAccepted();\n\n /**\n * @notice Returns the address of the governor\n * @return The address of the governor\n */\n function governor() external view returns (address);\n\n /**\n * @notice Returns the address of the pending governor\n * @return The address of the pending governor\n */\n function pendingGovernor() external view returns (address);\n\n /**\n * @notice Returns whether the given account is the current governor\n * @param account The account to check\n * @return Whether it is the current governor or not\n */\n function isGovernor(address account) external view returns (bool);\n\n /**\n * @notice Returns whether the given account is the pending governor\n * @param account The account to check\n * @return Whether it is the pending governor or not\n */\n function isPendingGovernor(address account) external view returns (bool);\n\n /**\n * @notice Sets a new pending governor\n * @dev Only the current governor can execute this action\n * @param pendingGovernor The new pending governor\n */\n function setPendingGovernor(address pendingGovernor) external;\n\n /**\n * @notice Sets the pending governor as the governor\n * @dev Only the pending governor can execute this action\n */\n function acceptPendingGovernor() external;\n}\n"
}
},
"settings": {
"optimizer": {
"enabled": true,
"runs": 9999
},
"outputSelection": {
"*": {
"*": [
"evm.bytecode",
"evm.deployedBytecode",
"devdoc",
"userdoc",
"metadata",
"abi"
]
}
},
"libraries": {}
}
} |