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{
"language": "Solidity",
"sources": {
"@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/token/ERC20/utils/SafeERC20.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (token/ERC20/utils/SafeERC20.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../IERC20.sol\";\nimport \"../../../utils/Address.sol\";\n\n/**\n * @title SafeERC20\n * @dev Wrappers around ERC20 operations that throw on failure (when the token\n * contract returns false). Tokens that return no value (and instead revert or\n * throw on failure) are also supported, non-reverting calls are assumed to be\n * successful.\n * To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract,\n * which allows you to call the safe operations as `token.safeTransfer(...)`, etc.\n */\nlibrary SafeERC20 {\n using Address for address;\n\n function safeTransfer(\n IERC20 token,\n address to,\n uint256 value\n ) internal {\n _callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value));\n }\n\n function safeTransferFrom(\n IERC20 token,\n address from,\n address to,\n uint256 value\n ) internal {\n _callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value));\n }\n\n /**\n * @dev Deprecated. This function has issues similar to the ones found in\n * {IERC20-approve}, and its usage is discouraged.\n *\n * Whenever possible, use {safeIncreaseAllowance} and\n * {safeDecreaseAllowance} instead.\n */\n function safeApprove(\n IERC20 token,\n address spender,\n uint256 value\n ) internal {\n // safeApprove should only be called when setting an initial allowance,\n // or when resetting it to zero. To increase and decrease it, use\n // 'safeIncreaseAllowance' and 'safeDecreaseAllowance'\n require(\n (value == 0) || (token.allowance(address(this), spender) == 0),\n \"SafeERC20: approve from non-zero to non-zero allowance\"\n );\n _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value));\n }\n\n function safeIncreaseAllowance(\n IERC20 token,\n address spender,\n uint256 value\n ) internal {\n uint256 newAllowance = token.allowance(address(this), spender) + value;\n _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));\n }\n\n function safeDecreaseAllowance(\n IERC20 token,\n address spender,\n uint256 value\n ) internal {\n unchecked {\n uint256 oldAllowance = token.allowance(address(this), spender);\n require(oldAllowance >= value, \"SafeERC20: decreased allowance below zero\");\n uint256 newAllowance = oldAllowance - value;\n _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));\n }\n }\n\n /**\n * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement\n * on the return value: the return value is optional (but if data is returned, it must not be false).\n * @param token The token targeted by the call.\n * @param data The call data (encoded using abi.encode or one of its variants).\n */\n function _callOptionalReturn(IERC20 token, bytes memory data) private {\n // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since\n // we're implementing it ourselves. We use {Address.functionCall} to perform this call, which verifies that\n // the target address contains contract code and also asserts for success in the low-level call.\n\n bytes memory returndata = address(token).functionCall(data, \"SafeERC20: low-level call failed\");\n if (returndata.length > 0) {\n // Return data is optional\n require(abi.decode(returndata, (bool)), \"SafeERC20: ERC20 operation did not succeed\");\n }\n }\n}\n"
},
"@openzeppelin/contracts/utils/Address.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.5.0) (utils/Address.sol)\n\npragma solidity ^0.8.1;\n\n/**\n * @dev Collection of functions related to the address type\n */\nlibrary Address {\n /**\n * @dev Returns true if `account` is a contract.\n *\n * [IMPORTANT]\n * ====\n * It is unsafe to assume that an address for which this function returns\n * false is an externally-owned account (EOA) and not a contract.\n *\n * Among others, `isContract` will return false for the following\n * types of addresses:\n *\n * - an externally-owned account\n * - a contract in construction\n * - an address where a contract will be created\n * - an address where a contract lived, but was destroyed\n * ====\n *\n * [IMPORTANT]\n * ====\n * You shouldn't rely on `isContract` to protect against flash loan attacks!\n *\n * Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets\n * like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract\n * constructor.\n * ====\n */\n function isContract(address account) internal view returns (bool) {\n // This method relies on extcodesize/address.code.length, which returns 0\n // for contracts in construction, since the code is only stored at the end\n // of the constructor execution.\n\n return account.code.length > 0;\n }\n\n /**\n * @dev Replacement for Solidity's `transfer`: sends `amount` wei to\n * `recipient`, forwarding all available gas and reverting on errors.\n *\n * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost\n * of certain opcodes, possibly making contracts go over the 2300 gas limit\n * imposed by `transfer`, making them unable to receive funds via\n * `transfer`. {sendValue} removes this limitation.\n *\n * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].\n *\n * IMPORTANT: because control is transferred to `recipient`, care must be\n * taken to not create reentrancy vulnerabilities. Consider using\n * {ReentrancyGuard} or the\n * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].\n */\n function sendValue(address payable recipient, uint256 amount) internal {\n require(address(this).balance >= amount, \"Address: insufficient balance\");\n\n (bool success, ) = recipient.call{value: amount}(\"\");\n require(success, \"Address: unable to send value, recipient may have reverted\");\n }\n\n /**\n * @dev Performs a Solidity function call using a low level `call`. A\n * plain `call` is an unsafe replacement for a function call: use this\n * function instead.\n *\n * If `target` reverts with a revert reason, it is bubbled up by this\n * function (like regular Solidity function calls).\n *\n * Returns the raw returned data. To convert to the expected return value,\n * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].\n *\n * Requirements:\n *\n * - `target` must be a contract.\n * - calling `target` with `data` must not revert.\n *\n * _Available since v3.1._\n */\n function functionCall(address target, bytes memory data) internal returns (bytes memory) {\n return functionCall(target, data, \"Address: low-level call failed\");\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with\n * `errorMessage` as a fallback revert reason when `target` reverts.\n *\n * _Available since v3.1._\n */\n function functionCall(\n address target,\n bytes memory data,\n string memory errorMessage\n ) internal returns (bytes memory) {\n return functionCallWithValue(target, data, 0, errorMessage);\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],\n * but also transferring `value` wei to `target`.\n *\n * Requirements:\n *\n * - the calling contract must have an ETH balance of at least `value`.\n * - the called Solidity function must be `payable`.\n *\n * _Available since v3.1._\n */\n function functionCallWithValue(\n address target,\n bytes memory data,\n uint256 value\n ) internal returns (bytes memory) {\n return functionCallWithValue(target, data, value, \"Address: low-level call with value failed\");\n }\n\n /**\n * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but\n * with `errorMessage` as a fallback revert reason when `target` reverts.\n *\n * _Available since v3.1._\n */\n function functionCallWithValue(\n address target,\n bytes memory data,\n uint256 value,\n string memory errorMessage\n ) internal returns (bytes memory) {\n require(address(this).balance >= value, \"Address: insufficient balance for call\");\n require(isContract(target), \"Address: call to non-contract\");\n\n (bool success, bytes memory returndata) = target.call{value: value}(data);\n return verifyCallResult(success, returndata, errorMessage);\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],\n * but performing a static call.\n *\n * _Available since v3.3._\n */\n function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {\n return functionStaticCall(target, data, \"Address: low-level static call failed\");\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],\n * but performing a static call.\n *\n * _Available since v3.3._\n */\n function functionStaticCall(\n address target,\n bytes memory data,\n string memory errorMessage\n ) internal view returns (bytes memory) {\n require(isContract(target), \"Address: static call to non-contract\");\n\n (bool success, bytes memory returndata) = target.staticcall(data);\n return verifyCallResult(success, returndata, errorMessage);\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],\n * but performing a delegate call.\n *\n * _Available since v3.4._\n */\n function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {\n return functionDelegateCall(target, data, \"Address: low-level delegate call failed\");\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],\n * but performing a delegate call.\n *\n * _Available since v3.4._\n */\n function functionDelegateCall(\n address target,\n bytes memory data,\n string memory errorMessage\n ) internal returns (bytes memory) {\n require(isContract(target), \"Address: delegate call to non-contract\");\n\n (bool success, bytes memory returndata) = target.delegatecall(data);\n return verifyCallResult(success, returndata, errorMessage);\n }\n\n /**\n * @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the\n * revert reason using the provided one.\n *\n * _Available since v4.3._\n */\n function verifyCallResult(\n bool success,\n bytes memory returndata,\n string memory errorMessage\n ) internal pure returns (bytes memory) {\n if (success) {\n return returndata;\n } else {\n // Look for revert reason and bubble it up if present\n if (returndata.length > 0) {\n // The easiest way to bubble the revert reason is using memory via assembly\n\n assembly {\n let returndata_size := mload(returndata)\n revert(add(32, returndata), returndata_size)\n }\n } else {\n revert(errorMessage);\n }\n }\n }\n}\n"
},
"@openzeppelin/contracts/utils/math/SafeMath.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.6.0) (utils/math/SafeMath.sol)\n\npragma solidity ^0.8.0;\n\n// CAUTION\n// This version of SafeMath should only be used with Solidity 0.8 or later,\n// because it relies on the compiler's built in overflow checks.\n\n/**\n * @dev Wrappers over Solidity's arithmetic operations.\n *\n * NOTE: `SafeMath` is generally not needed starting with Solidity 0.8, since the compiler\n * now has built in overflow checking.\n */\nlibrary SafeMath {\n /**\n * @dev Returns the addition of two unsigned integers, with an overflow flag.\n *\n * _Available since v3.4._\n */\n function tryAdd(uint256 a, uint256 b) internal pure returns (bool, uint256) {\n unchecked {\n uint256 c = a + b;\n if (c < a) return (false, 0);\n return (true, c);\n }\n }\n\n /**\n * @dev Returns the subtraction of two unsigned integers, with an overflow flag.\n *\n * _Available since v3.4._\n */\n function trySub(uint256 a, uint256 b) internal pure returns (bool, uint256) {\n unchecked {\n if (b > a) return (false, 0);\n return (true, a - b);\n }\n }\n\n /**\n * @dev Returns the multiplication of two unsigned integers, with an overflow flag.\n *\n * _Available since v3.4._\n */\n function tryMul(uint256 a, uint256 b) internal pure returns (bool, uint256) {\n unchecked {\n // Gas optimization: this is cheaper than requiring 'a' not being zero, but the\n // benefit is lost if 'b' is also tested.\n // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522\n if (a == 0) return (true, 0);\n uint256 c = a * b;\n if (c / a != b) return (false, 0);\n return (true, c);\n }\n }\n\n /**\n * @dev Returns the division of two unsigned integers, with a division by zero flag.\n *\n * _Available since v3.4._\n */\n function tryDiv(uint256 a, uint256 b) internal pure returns (bool, uint256) {\n unchecked {\n if (b == 0) return (false, 0);\n return (true, a / b);\n }\n }\n\n /**\n * @dev Returns the remainder of dividing two unsigned integers, with a division by zero flag.\n *\n * _Available since v3.4._\n */\n function tryMod(uint256 a, uint256 b) internal pure returns (bool, uint256) {\n unchecked {\n if (b == 0) return (false, 0);\n return (true, a % b);\n }\n }\n\n /**\n * @dev Returns the addition of two unsigned integers, reverting on\n * overflow.\n *\n * Counterpart to Solidity's `+` operator.\n *\n * Requirements:\n *\n * - Addition cannot overflow.\n */\n function add(uint256 a, uint256 b) internal pure returns (uint256) {\n return a + b;\n }\n\n /**\n * @dev Returns the subtraction of two unsigned integers, reverting on\n * overflow (when the result is negative).\n *\n * Counterpart to Solidity's `-` operator.\n *\n * Requirements:\n *\n * - Subtraction cannot overflow.\n */\n function sub(uint256 a, uint256 b) internal pure returns (uint256) {\n return a - b;\n }\n\n /**\n * @dev Returns the multiplication of two unsigned integers, reverting on\n * overflow.\n *\n * Counterpart to Solidity's `*` operator.\n *\n * Requirements:\n *\n * - Multiplication cannot overflow.\n */\n function mul(uint256 a, uint256 b) internal pure returns (uint256) {\n return a * b;\n }\n\n /**\n * @dev Returns the integer division of two unsigned integers, reverting on\n * division by zero. The result is rounded towards zero.\n *\n * Counterpart to Solidity's `/` operator.\n *\n * Requirements:\n *\n * - The divisor cannot be zero.\n */\n function div(uint256 a, uint256 b) internal pure returns (uint256) {\n return a / b;\n }\n\n /**\n * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),\n * reverting when dividing by zero.\n *\n * Counterpart to Solidity's `%` operator. This function uses a `revert`\n * opcode (which leaves remaining gas untouched) while Solidity uses an\n * invalid opcode to revert (consuming all remaining gas).\n *\n * Requirements:\n *\n * - The divisor cannot be zero.\n */\n function mod(uint256 a, uint256 b) internal pure returns (uint256) {\n return a % b;\n }\n\n /**\n * @dev Returns the subtraction of two unsigned integers, reverting with custom message on\n * overflow (when the result is negative).\n *\n * CAUTION: This function is deprecated because it requires allocating memory for the error\n * message unnecessarily. For custom revert reasons use {trySub}.\n *\n * Counterpart to Solidity's `-` operator.\n *\n * Requirements:\n *\n * - Subtraction cannot overflow.\n */\n function sub(\n uint256 a,\n uint256 b,\n string memory errorMessage\n ) internal pure returns (uint256) {\n unchecked {\n require(b <= a, errorMessage);\n return a - b;\n }\n }\n\n /**\n * @dev Returns the integer division of two unsigned integers, reverting with custom message on\n * division by zero. The result is rounded towards zero.\n *\n * Counterpart to Solidity's `/` operator. Note: this function uses a\n * `revert` opcode (which leaves remaining gas untouched) while Solidity\n * uses an invalid opcode to revert (consuming all remaining gas).\n *\n * Requirements:\n *\n * - The divisor cannot be zero.\n */\n function div(\n uint256 a,\n uint256 b,\n string memory errorMessage\n ) internal pure returns (uint256) {\n unchecked {\n require(b > 0, errorMessage);\n return a / b;\n }\n }\n\n /**\n * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),\n * reverting with custom message when dividing by zero.\n *\n * CAUTION: This function is deprecated because it requires allocating memory for the error\n * message unnecessarily. For custom revert reasons use {tryMod}.\n *\n * Counterpart to Solidity's `%` operator. This function uses a `revert`\n * opcode (which leaves remaining gas untouched) while Solidity uses an\n * invalid opcode to revert (consuming all remaining gas).\n *\n * Requirements:\n *\n * - The divisor cannot be zero.\n */\n function mod(\n uint256 a,\n uint256 b,\n string memory errorMessage\n ) internal pure returns (uint256) {\n unchecked {\n require(b > 0, errorMessage);\n return a % b;\n }\n }\n}\n"
},
"contracts/strategy/BaseStrategy.sol": {
"content": "// SPDX-License-Identifier: GPL-3.0\npragma solidity >=0.8.0 <0.9.0;\n\nimport {IERC20} from \"@openzeppelin/contracts/token/ERC20/IERC20.sol\";\nimport {SafeERC20} from \"@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol\";\nimport {SafeMath} from \"@openzeppelin/contracts/utils/math/SafeMath.sol\";\n\nimport {VaultAPI} from \"../../interfaces/vault/VaultAPI.sol\";\n\nlibrary StrategyLib {\n using SafeMath for uint256;\n\n function internalHarvestTrigger(\n address vault,\n address strategy,\n uint256 callCost,\n uint256 minReportDelay,\n uint256 maxReportDelay,\n uint256 debtThreshold,\n uint256 profitFactor\n ) public view returns (bool) {\n StrategyParams memory params = VaultAPI(vault).strategies(strategy);\n // Should not trigger if Strategy is not activated\n if (params.activation == 0) {\n return false;\n }\n\n // Should not trigger if we haven't waited long enough since previous harvest\n if (block.timestamp.sub(params.lastReport) < minReportDelay) return false;\n\n // Should trigger if hasn't been called in a while\n if (block.timestamp.sub(params.lastReport) >= maxReportDelay) return true;\n\n // If some amount is owed, pay it back\n // NOTE: Since debt is based on deposits, it makes sense to guard against large\n // changes to the value from triggering a harvest directly through user\n // behavior. This should ensure reasonable resistance to manipulation\n // from user-initiated withdrawals as the outstanding debt fluctuates.\n uint256 outstanding = VaultAPI(vault).debtOutstanding();\n\n if (outstanding > debtThreshold) return true;\n\n // Check for profits and losses\n uint256 total = StrategyAPI(strategy).estimatedTotalAssets();\n\n // Trigger if we have a loss to report\n if (total.add(debtThreshold) < params.totalDebt) return true;\n\n uint256 profit = 0;\n if (total > params.totalDebt) profit = total.sub(params.totalDebt);\n // We've earned a profit!\n\n // Otherwise, only trigger if it \"makes sense\" economically (gas cost\n // is <N% of value moved)\n uint256 credit = VaultAPI(vault).creditAvailable();\n return (profitFactor.mul(callCost) < credit.add(profit));\n }\n\n function internalSetRewards(\n address oldRewards,\n address newRewards,\n address vault\n ) public {\n require(newRewards != address(0));\n VaultAPI(vault).approve(oldRewards, 0);\n VaultAPI(vault).approve(newRewards, type(uint256).max);\n }\n}\n\n// File: StrategyLib.sol\n\nstruct StrategyParams {\n uint256 performanceFee;\n uint256 activation;\n uint256 debtRatio;\n uint256 minDebtPerHarvest;\n uint256 maxDebtPerHarvest;\n uint256 lastReport;\n uint256 totalDebt;\n uint256 totalGain;\n uint256 totalLoss;\n}\n\n/**\n * This interface is here for the keeper bot to use.\n */\ninterface StrategyAPI {\n function name() external view returns (string memory);\n\n function vault() external view returns (address);\n\n function want() external view returns (address);\n\n function apiVersion() external pure returns (string memory);\n\n function keeper() external view returns (address);\n\n function isActive() external view returns (bool);\n\n function delegatedAssets() external view returns (uint256);\n\n function estimatedTotalAssets() external view returns (uint256);\n\n function tendTrigger(uint256 callCost) external view returns (bool);\n\n function tend() external;\n\n function harvestTrigger(uint256 callCost) external view returns (bool);\n\n function harvest() external;\n\n event Harvested(uint256 profit, uint256 loss, uint256 debtPayment, uint256 debtOutstanding);\n}\n\n/**\n * @title Base Strategy\n * @author Everbloom\n * @notice\n * BaseStrategy implements all of the required functionality to interoperate\n * closely with the Vault contract. This contract should be inherited and the\n * abstract methods implemented to adapt the Strategy to the particular needs\n * it has to create a return.\n *\n * Of special interest is the relationship between `harvest()` and\n * `vault.report()'. `harvest()` may be called simply because enough time has\n * elapsed since the last report, and not because any funds need to be moved\n * or positions adjusted. This is critical so that the Vault may maintain an\n * accurate picture of the Strategy's performance. See `vault.report()`,\n * `harvest()`, and `harvestTrigger()` for further details.\n */\n\nabstract contract BaseStrategy {\n using SafeMath for uint256;\n string public metadataURI;\n\n /**\n * @notice\n * Used to track which version of `StrategyAPI` this Strategy\n * implements.\n * @dev The Strategy's version must match the Vault's `API_VERSION`.\n * @return A string which holds the current API version of this contract.\n */\n function apiVersion() public pure returns (string memory) {\n return \"0.4.3\";\n }\n\n /**\n * @notice This Strategy's name.\n * @dev\n * You can use this field to manage the \"version\" of this Strategy, e.g.\n * `StrategySomethingOrOtherV1`. However, \"API Version\" is managed by\n * `apiVersion()` function above.\n * @return This Strategy's name.\n */\n function name() external view virtual returns (string memory);\n\n /**\n * @notice\n * The amount (priced in want) of the total assets managed by this strategy should not count\n * towards TVL calculations.\n * @dev\n * You can override this field to set it to a non-zero value if some of the assets of this\n * Strategy is somehow delegated inside another part of the ecosystem e.g. another Vault.\n * Note that this value must be strictly less than or equal to the amount provided by\n * `estimatedTotalAssets()` below, as the TVL calc will be total assets minus delegated assets.\n * Also note that this value is used to determine the total assets under management by this\n * strategy, for the purposes of computing the management fee in `Vault`\n * @return\n * The amount of assets this strategy manages that should not be included in Total Value\n * Locked (TVL) calculation across it's ecosystem.\n */\n function delegatedAssets() external view virtual returns (uint256) {\n return 0;\n }\n\n VaultAPI public vault;\n address public strategist;\n address public rewards;\n address public keeper;\n\n IERC20 public want;\n\n // So indexers can keep track of this\n event Harvested(uint256 profit, uint256 loss, uint256 debtPayment, uint256 debtOutstanding);\n\n event UpdatedStrategist(address newStrategist);\n\n event UpdatedKeeper(address newKeeper);\n\n event UpdatedRewards(address rewards);\n\n event UpdatedMinReportDelay(uint256 delay);\n\n event UpdatedMaxReportDelay(uint256 delay);\n\n event UpdatedProfitFactor(uint256 profitFactor);\n\n event UpdatedDebtThreshold(uint256 debtThreshold);\n\n event EmergencyExitEnabled();\n\n event UpdatedMetadataURI(string metadataURI);\n\n // The minimum number of seconds between harvest calls. See\n // `setMinReportDelay()` for more details.\n uint256 public minReportDelay;\n\n // The maximum number of seconds between harvest calls. See\n // `setMaxReportDelay()` for more details.\n uint256 public maxReportDelay;\n\n // The minimum multiple that `callCost` must be above the credit/profit to\n // be \"justifiable\". See `setProfitFactor()` for more details.\n uint256 public profitFactor;\n\n // Use this to adjust the threshold at which running a debt causes a\n // harvest trigger. See `setDebtThreshold()` for more details.\n uint256 public debtThreshold;\n\n // See note on `setEmergencyExit()`.\n bool public emergencyExit;\n\n // modifiers\n modifier onlyAuthorized() {\n _onlyAuthorized();\n _;\n }\n\n modifier onlyEmergencyAuthorized() {\n _onlyEmergencyAuthorized();\n _;\n }\n\n modifier onlyStrategist() {\n _onlyStrategist();\n _;\n }\n\n modifier onlyGovernance() {\n _onlyGovernance();\n _;\n }\n\n modifier onlyRewarder() {\n _onlyRewarder();\n _;\n }\n\n modifier onlyKeepers() {\n _onlyKeepers();\n _;\n }\n\n function _onlyAuthorized() internal view {\n require(msg.sender == strategist || msg.sender == _governance());\n }\n\n function _onlyEmergencyAuthorized() internal view {\n require(\n msg.sender == strategist ||\n msg.sender == _governance() ||\n msg.sender == vault.guardian() ||\n msg.sender == vault.management()\n );\n }\n\n function _onlyStrategist() internal view {\n require(msg.sender == strategist);\n }\n\n function _onlyGovernance() internal view {\n require(msg.sender == _governance());\n }\n\n function _onlyRewarder() internal view {\n require(msg.sender == _governance() || msg.sender == strategist);\n }\n\n function _onlyKeepers() internal view {\n require(\n msg.sender == keeper ||\n msg.sender == strategist ||\n msg.sender == _governance() ||\n msg.sender == vault.guardian() ||\n msg.sender == vault.management()\n );\n }\n\n constructor(address _vault) {\n _initialize(_vault, msg.sender, msg.sender, msg.sender);\n }\n\n /**\n * @notice\n * Initializes the Strategy, this is called only once, when the\n * contract is deployed.\n * @dev `_vault` should implement `VaultAPI`.\n * @param _vault The address of the Vault responsible for this Strategy.\n * @param _strategist The address to assign as `strategist`.\n * The strategist is able to change the reward address\n * @param _rewards The address to use for pulling rewards.\n * @param _keeper The adddress of the _keeper. _keeper\n * can harvest and tend a strategy.\n */\n function _initialize(\n address _vault,\n address _strategist,\n address _rewards,\n address _keeper\n ) internal {\n require(address(want) == address(0), \"Strategy already initialized\");\n\n vault = VaultAPI(_vault);\n want = IERC20(vault.token());\n SafeERC20.safeApprove(want, _vault, type(uint256).max);\n // Give Vault unlimited access (might save gas)\n strategist = _strategist;\n rewards = _rewards;\n keeper = _keeper;\n\n // initialize variables\n minReportDelay = 0;\n maxReportDelay = 86400;\n profitFactor = 100;\n debtThreshold = 0;\n\n vault.approve(rewards, type(uint256).max);\n // Allow rewards to be pulled\n }\n\n /**\n * @notice\n * Used to change `strategist`.\n *\n * This may only be called by governance or the existing strategist.\n * @param _strategist The new address to assign as `strategist`.\n */\n function setStrategist(address _strategist) external onlyAuthorized {\n require(_strategist != address(0));\n strategist = _strategist;\n emit UpdatedStrategist(_strategist);\n }\n\n /**\n * @notice\n * Used to change `keeper`.\n *\n * `keeper` is the only address that may call `tend()` or `harvest()`,\n * other than `governance()` or `strategist`. However, unlike\n * `governance()` or `strategist`, `keeper` may *only* call `tend()`\n * and `harvest()`, and no other authorized functions, following the\n * principle of least privilege.\n *\n * This may only be called by governance or the strategist.\n * @param _keeper The new address to assign as `keeper`.\n */\n function setKeeper(address _keeper) external onlyAuthorized {\n require(_keeper != address(0));\n keeper = _keeper;\n emit UpdatedKeeper(_keeper);\n }\n\n /**\n * @notice\n * Used to change `rewards`. EOA or smart contract which has the permission\n * to pull rewards from the vault.\n *\n * This may only be called by the strategist.\n * @param _rewards The address to use for pulling rewards.\n */\n function setRewards(address _rewards) external onlyRewarder {\n address oldRewards = rewards;\n rewards = _rewards;\n StrategyLib.internalSetRewards(oldRewards, _rewards, address(vault));\n emit UpdatedRewards(_rewards);\n }\n\n /**\n * @notice\n * Used to change `minReportDelay`. `minReportDelay` is the minimum number\n * of blocks that should pass for `harvest()` to be called.\n *\n * For external keepers (such as the Keep3r network), this is the minimum\n * time between jobs to wait. (see `harvestTrigger()`\n * for more details.)\n *\n * This may only be called by governance or the strategist.\n * @param _delay The minimum number of seconds to wait between harvests.\n */\n function setMinReportDelay(uint256 _delay) external onlyAuthorized {\n minReportDelay = _delay;\n emit UpdatedMinReportDelay(_delay);\n }\n\n /**\n * @notice\n * Used to change `maxReportDelay`. `maxReportDelay` is the maximum number\n * of blocks that should pass for `harvest()` to be called.\n *\n * For external keepers (such as the Keep3r network), this is the maximum\n * time between jobs to wait. (see `harvestTrigger()`\n * for more details.)\n *\n * This may only be called by governance or the strategist.\n * @param _delay The maximum number of seconds to wait between harvests.\n */\n function setMaxReportDelay(uint256 _delay) external onlyAuthorized {\n maxReportDelay = _delay;\n emit UpdatedMaxReportDelay(_delay);\n }\n\n /**\n * @notice\n * Used to change `profitFactor`. `profitFactor` is used to determine\n * if it's worthwhile to harvest, given gas costs. (See `harvestTrigger()`\n * for more details.)\n *\n * This may only be called by governance or the strategist.\n * @param _profitFactor A ratio to multiply anticipated\n * `harvest()` gas cost against.\n */\n function setProfitFactor(uint256 _profitFactor) external onlyAuthorized {\n profitFactor = _profitFactor;\n emit UpdatedProfitFactor(_profitFactor);\n }\n\n /**\n * @notice\n * Sets how far the Strategy can go into loss without a harvest and report\n * being required.\n *\n * By default this is 0, meaning any losses would cause a harvest which\n * will subsequently report the loss to the Vault for tracking. (See\n * `harvestTrigger()` for more details.)\n *\n * This may only be called by governance or the strategist.\n * @param _debtThreshold How big of a loss this Strategy may carry without\n * being required to report to the Vault.\n */\n function setDebtThreshold(uint256 _debtThreshold) external onlyAuthorized {\n debtThreshold = _debtThreshold;\n emit UpdatedDebtThreshold(_debtThreshold);\n }\n\n /**\n * @notice\n * Used to change `metadataURI`. `metadataURI` is used to store the URI\n * of the file describing the strategy.\n *\n * This may only be called by governance or the strategist.\n * @param _metadataURI The URI that describe the strategy.\n */\n function setMetadataURI(string calldata _metadataURI) external onlyAuthorized {\n metadataURI = _metadataURI;\n emit UpdatedMetadataURI(_metadataURI);\n }\n\n /**\n * Resolve governance address from Vault contract, used to make assertions\n * on protected functions in the Strategy.\n */\n function _governance() internal view returns (address) {\n return vault.governance();\n }\n\n /**\n * @notice\n * Provide an accurate conversion from `_amtInWei` (denominated in wei)\n * to `want` (using the native decimal characteristics of `want`).\n * @dev\n * Care must be taken when working with decimals to assure that the conversion\n * is compatible. As an example:\n *\n * given 1e17 wei (0.1 ETH) as input, and want is USDC (6 decimals),\n * with USDC/ETH = 1800, this should give back 180000000 (180 USDC)\n *\n * @param _amtInWei The amount (in wei/1e-18 ETH) to convert to `want`\n * @return The amount in `want` of `_amtInEth` converted to `want`\n **/\n function ethToWant(uint256 _amtInWei) public view virtual returns (uint256);\n\n /**\n * @notice\n * Provide an accurate estimate for the total amount of assets\n * (principle + return) that this Strategy is currently managing,\n * denominated in terms of `want` tokens.\n *\n * This total should be \"realizable\" e.g. the total value that could\n * *actually* be obtained from this Strategy if it were to divest its\n * entire position based on current on-chain conditions.\n * @dev\n * Care must be taken in using this function, since it relies on external\n * systems, which could be manipulated by the attacker to give an inflated\n * (or reduced) value produced by this function, based on current on-chain\n * conditions (e.g. this function is possible to influence through\n * flashloan attacks, oracle manipulations, or other DeFi attack\n * mechanisms).\n *\n * It is up to governance to use this function to correctly order this\n * Strategy relative to its peers in the withdrawal queue to minimize\n * losses for the Vault based on sudden withdrawals. This value should be\n * higher than the total debt of the Strategy and higher than its expected\n * value to be \"safe\".\n * @return The estimated total assets in this Strategy.\n */\n function estimatedTotalAssets() public view virtual returns (uint256);\n\n /*\n * @notice\n * Provide an indication of whether this strategy is currently \"active\"\n * in that it is managing an active position, or will manage a position in\n * the future. This should correlate to `harvest()` activity, so that Harvest\n * events can be tracked externally by indexing agents.\n * @return True if the strategy is actively managing a position.\n */\n function isActive() public view returns (bool) {\n return vault.strategies(address(this)).debtRatio > 0 || estimatedTotalAssets() > 0;\n }\n\n /**\n * Perform any Strategy unwinding or other calls necessary to capture the\n * \"free return\" this Strategy has generated since the last time its core\n * position(s) were adjusted. Examples include unwrapping extra rewards.\n * This call is only used during \"normal operation\" of a Strategy, and\n * should be optimized to minimize losses as much as possible.\n *\n * This method returns any realized profits and/or realized losses\n * incurred, and should return the total amounts of profits/losses/debt\n * payments (in `want` tokens) for the Vault's accounting (e.g.\n * `want.balanceOf(this) >= _debtPayment + _profit`).\n *\n * `_debtOutstanding` will be 0 if the Strategy is not past the configured\n * debt limit, otherwise its value will be how far past the debt limit\n * the Strategy is. The Strategy's debt limit is configured in the Vault.\n *\n * NOTE: `_debtPayment` should be less than or equal to `_debtOutstanding`.\n * It is okay for it to be less than `_debtOutstanding`, as that\n * should only used as a guide for how much is left to pay back.\n * Payments should be made to minimize loss from slippage, debt,\n * withdrawal fees, etc.\n *\n * See `vault.debtOutstanding()`.\n */\n function _prepareReturn(uint256 _debtOutstanding)\n internal\n virtual\n returns (\n uint256 _profit,\n uint256 _loss,\n uint256 _debtPayment\n );\n\n /**\n * Perform any adjustments to the core position(s) of this Strategy given\n * what change the Vault made in the \"investable capital\" available to the\n * Strategy. Note that all \"free capital\" in the Strategy after the report\n * was made is available for reinvestment. Also note that this number\n * could be 0, and you should handle that scenario accordingly.\n *\n * See comments regarding `_debtOutstanding` on `prepareReturn()`.\n */\n function _adjustPosition(uint256 _debtOutstanding) internal virtual;\n\n /**\n * Liquidate up to `_amountNeeded` of `want` of this strategy's positions,\n * irregardless of slippage. Any excess will be re-invested with `adjustPosition()`.\n * This function should return the amount of `want` tokens made available by the\n * liquidation. If there is a difference between them, `_loss` indicates whether the\n * difference is due to a realized loss, or if there is some other sitution at play\n * (e.g. locked funds) where the amount made available is less than what is needed.\n *\n * NOTE: The invariant `_liquidatedAmount + _loss <= _amountNeeded` should always be maintained\n */\n function _liquidatePosition(uint256 _amountNeeded)\n internal\n virtual\n returns (uint256 _liquidatedAmount, uint256 _loss);\n\n /**\n * Liquidate everything and returns the amount that got freed.\n * This function is used during emergency exit instead of `prepareReturn()` to\n * liquidate all of the Strategy's positions back to the Vault.\n */\n\n function _liquidateAllPositions() internal virtual returns (uint256 _amountFreed);\n\n /**\n * @notice\n * Provide a signal to the keeper that `tend()` should be called. The\n * keeper will provide the estimated gas cost that they would pay to call\n * `tend()`, and this function should use that estimate to make a\n * determination if calling it is \"worth it\" for the keeper. This is not\n * the only consideration into issuing this trigger, for example if the\n * position would be negatively affected if `tend()` is not called\n * shortly, then this can return `true` even if the keeper might be\n * \"at a loss\".\n * @dev\n * `callCostInWei` must be priced in terms of `wei` (1e-18 ETH).\n *\n * This call and `harvestTrigger()` should never return `true` at the same\n * time.\n * @param callCostInWei The keeper's estimated gas cost to call `tend()` (in wei).\n * @return `true` if `tend()` should be called, `false` otherwise.\n */\n // solhint-disable-next-line no-unused-vars\n function tendTrigger(uint256 callCostInWei) public view virtual returns (bool) {\n // We usually don't need tend, but if there are positions that need\n // active maintainence, overriding this function is how you would\n // signal for that.\n // If your implementation uses the cost of the call in want, you can\n // use uint256 callCost = ethToWant(callCostInWei);\n\n return false;\n }\n\n /**\n * @notice\n * Adjust the Strategy's position. The purpose of tending isn't to\n * realize gains, but to maximize yield by reinvesting any returns.\n *\n * See comments on `adjustPosition()`.\n *\n * This may only be called by governance, the strategist, or the keeper.\n */\n function tend() external onlyKeepers {\n // Don't take profits with this call, but adjust for better gains\n _adjustPosition(vault.debtOutstanding());\n }\n\n /**\n * @notice\n * Provide a signal to the keeper that `harvest()` should be called. The\n * keeper will provide the estimated gas cost that they would pay to call\n * `harvest()`, and this function should use that estimate to make a\n * determination if calling it is \"worth it\" for the keeper. This is not\n * the only consideration into issuing this trigger, for example if the\n * position would be negatively affected if `harvest()` is not called\n * shortly, then this can return `true` even if the keeper might be \"at a\n * loss\".\n * @dev\n * `callCostInWei` must be priced in terms of `wei` (1e-18 ETH).\n *\n * This call and `tendTrigger` should never return `true` at the\n * same time.\n *\n * See `min/maxReportDelay`, `profitFactor`, `debtThreshold` to adjust the\n * strategist-controlled parameters that will influence whether this call\n * returns `true` or not. These parameters will be used in conjunction\n * with the parameters reported to the Vault (see `params`) to determine\n * if calling `harvest()` is merited.\n *\n * It is expected that an external system will check `harvestTrigger()`.\n * This could be a script run off a desktop or cloud bot (e.g.\n * or via an integration with the Keep3r network (e.g.\n * https://github.com/Macarse/GenericKeep3rV2/blob/master/contracts/keep3r/GenericKeep3rV2.sol).\n * @param callCostInWei The keeper's estimated gas cost to call `harvest()` (in wei).\n * @return `true` if `harvest()` should be called, `false` otherwise.\n */\n function harvestTrigger(uint256 callCostInWei) public view virtual returns (bool) {\n return\n StrategyLib.internalHarvestTrigger(\n address(vault),\n address(this),\n ethToWant(callCostInWei),\n minReportDelay,\n maxReportDelay,\n debtThreshold,\n profitFactor\n );\n }\n\n /**\n * @notice\n * Harvests the Strategy, recognizing any profits or losses and adjusting\n * the Strategy's position.\n *\n * In the rare case the Strategy is in emergency shutdown, this will exit\n * the Strategy's position.\n *\n * This may only be called by governance, the strategist, or the keeper.\n * @dev\n * When `harvest()` is called, the Strategy reports to the Vault (via\n * `vault.report()`), so in some cases `harvest()` must be called in order\n * to take in profits, to borrow newly available funds from the Vault, or\n * otherwise adjust its position. In other cases `harvest()` must be\n * called to report to the Vault on the Strategy's position, especially if\n * any losses have occurred.\n */\n function harvest() external onlyKeepers {\n uint256 profit = 0;\n uint256 loss = 0;\n uint256 debtOutstanding = vault.debtOutstanding();\n uint256 debtPayment = 0;\n if (emergencyExit) {\n // Free up as much capital as possible\n uint256 amountFreed = _liquidateAllPositions();\n if (amountFreed < debtOutstanding) {\n loss = debtOutstanding.sub(amountFreed);\n } else if (amountFreed > debtOutstanding) {\n profit = amountFreed.sub(debtOutstanding);\n }\n debtPayment = debtOutstanding.sub(loss);\n } else {\n // Free up returns for Vault to pull\n (profit, loss, debtPayment) = _prepareReturn(debtOutstanding);\n }\n\n // Allow Vault to take up to the \"harvested\" balance of this contract,\n // which is the amount it has earned since the last time it reported to\n // the Vault.\n debtOutstanding = vault.report(profit, loss, debtPayment);\n\n // Check if free returns are left, and re-invest them\n _adjustPosition(debtOutstanding);\n\n emit Harvested(profit, loss, debtPayment, debtOutstanding);\n }\n\n /**\n * @notice\n * Withdraws `_amountNeeded` to `vault`.\n *\n * This may only be called by the Vault.\n * @param _amountNeeded How much `want` to withdraw.\n * @return _loss Any realized losses\n */\n function withdraw(uint256 _amountNeeded) external returns (uint256 _loss) {\n require(msg.sender == address(vault), \"!vault\");\n // Liquidate as much as possible to `want`, up to `_amountNeeded`\n uint256 amountFreed;\n (amountFreed, _loss) = _liquidatePosition(_amountNeeded);\n // Send it directly back (NOTE: Using `msg.sender` saves some gas here)\n SafeERC20.safeTransfer(want, msg.sender, amountFreed);\n // NOTE: Reinvest anything leftover on next `tend`/`harvest`\n }\n\n /**\n * Do anything necessary to prepare this Strategy for migration, such as\n * transferring any reserve or LP tokens, CDPs, or other tokens or stores of\n * value.\n */\n function _prepareMigration(address _newStrategy) internal virtual;\n\n /**\n * @notice\n * Transfers all `want` from this Strategy to `_newStrategy`.\n *\n * This may only be called by the Vault.\n * @dev\n * The new Strategy's Vault must be the same as this Strategy's Vault.\n * The migration process should be carefully performed to make sure all\n * the assets are migrated to the new address, which should have never\n * interacted with the vault before.\n * @param _newStrategy The Strategy to migrate to.\n */\n function migrate(address _newStrategy) external {\n require(msg.sender == address(vault));\n require(BaseStrategy(_newStrategy).vault() == vault);\n _prepareMigration(_newStrategy);\n SafeERC20.safeTransfer(want, _newStrategy, want.balanceOf(address(this)));\n }\n\n /**\n * @notice\n * Activates emergency exit. Once activated, the Strategy will exit its\n * position upon the next harvest, depositing all funds into the Vault as\n * quickly as is reasonable given on-chain conditions.\n *\n * This may only be called by governance or the strategist.\n * @dev\n * See `vault.setEmergencyShutdown()` and `harvest()` for further details.\n */\n function setEmergencyExit() external onlyEmergencyAuthorized {\n emergencyExit = true;\n vault.revokeStrategy();\n\n emit EmergencyExitEnabled();\n }\n\n /**\n * Override this to add all tokens/tokenized positions this contract\n * manages on a *persistent* basis (e.g. not just for swapping back to\n * want ephemerally).\n *\n * NOTE: Do *not* include `want`, already included in `sweep` below.\n *\n * Example:\n * ```\n * function protectedTokens() internal override view returns (address[] memory) {\n * address[] memory protected = new address[](3);\n * protected[0] = tokenA;\n * protected[1] = tokenB;\n * protected[2] = tokenC;\n * return protected;\n * }\n * ```\n */\n function _protectedTokens() internal view virtual returns (address[] memory);\n\n /**\n * @notice\n * Removes tokens from this Strategy that are not the type of tokens\n * managed by this Strategy. This may be used in case of accidentally\n * sending the wrong kind of token to this Strategy.\n *\n * Tokens will be sent to `governance()`.\n *\n * This will fail if an attempt is made to sweep `want`, or any tokens\n * that are protected by this Strategy.\n *\n * This may only be called by governance.\n * @dev\n * Implement `protectedTokens()` to specify any additional tokens that\n * should be protected from sweeping in addition to `want`.\n * @param _token The token to transfer out of this vault.\n */\n function sweep(address _token) external onlyGovernance {\n require(_token != address(want), \"!want\");\n require(_token != address(vault), \"!shares\");\n\n address[] memory protectedTokens = _protectedTokens();\n for (uint256 i; i < protectedTokens.length; i++) require(_token != protectedTokens[i], \"!protected\");\n\n SafeERC20.safeTransfer(IERC20(_token), _governance(), IERC20(_token).balanceOf(address(this)));\n }\n}\n\nabstract contract BaseStrategyInitializable is BaseStrategy {\n bool public isOriginal = true;\n\n event Cloned(address indexed clone);\n\n constructor(address _vault) BaseStrategy(_vault) {}\n\n function initialize(\n address _vault,\n address _strategist,\n address _rewards,\n address _keeper\n ) external virtual {\n _initialize(_vault, _strategist, _rewards, _keeper);\n }\n\n function clone(address _vault) external returns (address) {\n return this.clone(_vault, msg.sender, msg.sender, msg.sender);\n }\n\n function clone(\n address _vault,\n address _strategist,\n address _rewards,\n address _keeper\n ) external returns (address newStrategy) {\n require(isOriginal, \"!clone\");\n // Copied from https://github.com/optionality/clone-factory/blob/master/contracts/CloneFactory.sol\n bytes20 addressBytes = bytes20(address(this));\n\n assembly {\n // EIP-1167 bytecode\n let clone_code := mload(0x40)\n mstore(clone_code, 0x3d602d80600a3d3981f3363d3d373d3d3d363d73000000000000000000000000)\n mstore(add(clone_code, 0x14), addressBytes)\n mstore(add(clone_code, 0x28), 0x5af43d82803e903d91602b57fd5bf30000000000000000000000000000000000)\n newStrategy := create(0, clone_code, 0x37)\n }\n\n BaseStrategyInitializable(newStrategy).initialize(_vault, _strategist, _rewards, _keeper);\n\n emit Cloned(newStrategy);\n }\n}\n"
},
"interfaces/vault/VaultAPI.sol": {
"content": "// SPDX-License-Identifier: AGPL-3.0\n\npragma solidity >=0.8.0 <0.9.0;\n\nimport {IERC20} from \"@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol\";\nimport {StrategyParams} from \"../../contracts/strategy/BaseStrategy.sol\";\n\ninterface VaultAPI is IERC20 {\n function name() external view returns (string calldata);\n\n function symbol() external view returns (string calldata);\n\n function decimals() external view returns (uint256);\n\n function apiVersion() external pure returns (string memory);\n\n function permit(\n address owner,\n address spender,\n uint256 amount,\n uint256 expiry,\n bytes calldata signature\n ) external returns (bool);\n\n // NOTE: Vyper produces multiple signatures for a given function with \"default\" args\n function deposit() external returns (uint256);\n\n function deposit(uint256 amount) external returns (uint256);\n\n function deposit(uint256 amount, address recipient) external returns (uint256);\n\n // NOTE: Vyper produces multiple signatures for a given function with \"default\" args\n function withdraw() external returns (uint256);\n\n function withdraw(uint256 maxShares) external returns (uint256);\n\n function withdraw(uint256 maxShares, address recipient) external returns (uint256);\n\n function withdraw(\n uint256 maxShares,\n address recipient,\n uint256 maxLoss\n ) external returns (uint256);\n\n function token() external view returns (address);\n\n function strategies(address _strategy) external view returns (StrategyParams memory);\n\n function pricePerShare() external view returns (uint256);\n\n function totalAssets() external view returns (uint256);\n\n function depositLimit() external view returns (uint256);\n\n function maxAvailableShares() external view returns (uint256);\n\n /**\n * View how much the Vault would increase this Strategy's borrow limit,\n * based on its present performance (since its last report). Can be used to\n * determine expectedReturn in your Strategy.\n */\n function creditAvailable() external view returns (uint256);\n\n /**\n * View how much the Vault would like to pull back from the Strategy,\n * based on its present performance (since its last report). Can be used to\n * determine expectedReturn in your Strategy.\n */\n function debtOutstanding() external view returns (uint256);\n\n /**\n * View how much the Vault expect this Strategy to return at the current\n * block, based on its present performance (since its last report). Can be\n * used to determine expectedReturn in your Strategy.\n */\n function expectedReturn() external view returns (uint256);\n\n /**\n * This is the main contact point where the Strategy interacts with the\n * Vault. It is critical that this call is handled as intended by the\n * Strategy. Therefore, this function will be called by BaseStrategy to\n * make sure the integration is correct.\n */\n function report(\n uint256 _gain,\n uint256 _loss,\n uint256 _debtPayment\n ) external returns (uint256);\n\n /**\n * This function should only be used in the scenario where the Strategy is\n * being retired but no migration of the positions are possible, or in the\n * extreme scenario that the Strategy needs to be put into \"Emergency Exit\"\n * mode in order for it to exit as quickly as possible. The latter scenario\n * could be for any reason that is considered \"critical\" that the Strategy\n * exits its position as fast as possible, such as a sudden change in\n * market conditions leading to losses, or an imminent failure in an\n * external dependency.\n */\n function revokeStrategy() external;\n\n /**\n * View the governance address of the Vault to assert privileged functions\n * can only be called by governance. The Strategy serves the Vault, so it\n * is subject to governance defined by the Vault.\n */\n function governance() external view returns (address);\n\n /**\n * View the management address of the Vault to assert privileged functions\n * can only be called by management. The Strategy serves the Vault, so it\n * is subject to management defined by the Vault.\n */\n function management() external view returns (address);\n\n /**\n * View the guardian address of the Vault to assert privileged functions\n * can only be called by guardian. The Strategy serves the Vault, so it\n * is subject to guardian defined by the Vault.\n */\n function guardian() external view returns (address);\n}\n"
}
},
"settings": {
"optimizer": {
"enabled": true,
"runs": 200
},
"outputSelection": {
"*": {
"*": [
"evm.bytecode",
"evm.deployedBytecode",
"devdoc",
"userdoc",
"metadata",
"abi"
]
}
},
"libraries": {}
}
} |