creation_sourcecode: {{
    "language": "Solidity",
    "sources": {
      "@openzeppelin/contracts-0.8/token/ERC20/IERC20.sol": {
        "content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (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 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 `recipient`.\n     *\n     * Returns a boolean value indicating whether the operation succeeded.\n     *\n     * Emits a {Transfer} event.\n     */\n    function transfer(address recipient, 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 `sender` to `recipient` 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 sender,\n        address recipient,\n        uint256 amount\n    ) external returns (bool);\n\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"
      },
      "@openzeppelin/contracts-0.8/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-0.8/utils/Address.sol": {
        "content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (utils/Address.sol)\n\npragma solidity ^0.8.0;\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    function isContract(address account) internal view returns (bool) {\n        // This method relies on extcodesize, which returns 0 for contracts in\n        // construction, since the code is only stored at the end of the\n        // constructor execution.\n\n        uint256 size;\n        assembly {\n            size := extcodesize(account)\n        }\n        return size > 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"
      },
      "contracts/interfaces/IBooster.sol": {
        "content": "// SPDX-License-Identifier: MIT\npragma solidity 0.8.11;\n\ninterface IBooster {\n    struct FeeDistro {\n        address distro;\n        address rewards;\n        bool active;\n    }\n\n    function feeTokens(address _token) external returns (FeeDistro memory);\n\n    function earmarkFees(address _feeToken) external returns (bool);\n\n    struct PoolInfo {\n        address lptoken;\n        address token;\n        address gauge;\n        address crvRewards;\n        address stash;\n        bool shutdown;\n    }\n\n    function earmarkRewards(uint256 _pid) external returns (bool);\n\n    function poolLength() external view returns (uint256);\n\n    function lockRewards() external view returns (address);\n\n    function poolInfo(uint256 _pid) external view returns (PoolInfo memory poolInfo);\n\n    function distributeL2Fees(uint256 _amount) external;\n\n    function lockIncentive() external view returns (uint256);\n\n    function stakerIncentive() external view returns (uint256);\n\n    function earmarkIncentive() external view returns (uint256);\n\n    function platformFee() external view returns (uint256);\n\n    function FEE_DENOMINATOR() external view returns (uint256);\n\n    function voteGaugeWeight(address[] calldata _gauge, uint256[] calldata _weight) external returns (bool);\n}\n"
      },
      "contracts/interfaces/IRewardStaking.sol": {
        "content": "// SPDX-License-Identifier: MIT\npragma solidity 0.8.11;\n\ninterface IRewardStaking {\n    function getReward(address _account, bool _claimExtras) external;\n\n    function getReward(address _account) external;\n\n    function getReward(address _account, address _token) external;\n\n    function stakeFor(address, uint256) external;\n\n    function processIdleRewards() external;\n}\n"
      },
      "contracts/peripheral/BoosterHelper.sol": {
        "content": "// SPDX-License-Identifier: MIT\npragma solidity 0.8.11;\n\nimport { IERC20 } from \"@openzeppelin/contracts-0.8/token/ERC20/IERC20.sol\";\nimport { SafeERC20 } from \"@openzeppelin/contracts-0.8/token/ERC20/utils/SafeERC20.sol\";\nimport { IBooster } from \"../interfaces/IBooster.sol\";\nimport { IRewardStaking } from \"../interfaces/IRewardStaking.sol\";\n\ninterface IBaseRewardPool {\n    function lastTimeRewardApplicable() external view returns (uint256);\n\n    function periodFinish() external view returns (uint256);\n\n    function queuedRewards() external view returns (uint256);\n\n    function extraRewards(uint256) external view returns (address);\n\n    function extraRewardsLength() external view returns (uint256);\n}\n\n/**\n * @title   BoosterHelper\n * @author  AuraFinance\n * @notice  Invokes booster.earmarkRewards for multiple pools.\n * @dev     Allows anyone to call `earmarkRewards`  via the booster.\n */\ncontract BoosterHelper {\n    using SafeERC20 for IERC20;\n    struct PoolInfo {\n        uint256 pid;\n        address lptoken;\n        address token;\n        address gauge;\n        address crvRewards;\n        address stash;\n        bool shutdown;\n    }\n\n    IBooster public immutable booster;\n    address public immutable crv;\n\n    /**\n     * @param _booster      Booster.sol, e.g. 0xF403C135812408BFbE8713b5A23a04b3D48AAE31\n     * @param _crv          Crv  e.g. 0xba100000625a3754423978a60c9317c58a424e3D\n     */\n    constructor(address _booster, address _crv) {\n        booster = IBooster(_booster);\n        crv = _crv;\n    }\n\n    /**\n     * @notice Invoke earmarkRewards for each pool id.\n     * @param _pids Array of pool ids\n     * @return amount of crv received as incentive\n     */\n    function earmarkRewards(uint256[] memory _pids) external returns (uint256) {\n        uint256 len = _pids.length;\n        require(len > 0, \"!pids\");\n\n        for (uint256 i = 0; i < len; i++) {\n            require(booster.earmarkRewards(_pids[i]), \"!earmark reward\");\n        }\n        // Return all incentives to the sender\n        uint256 crvBal = IERC20(crv).balanceOf(address(this));\n        IERC20(crv).safeTransfer(msg.sender, crvBal);\n        return crvBal;\n    }\n\n    /**\n     * @notice Invoke processIdleRewards for each pool id.\n     * @param _pids Array of pool ids\n     */\n    function processIdleRewards(uint256[] memory _pids) external {\n        uint256 len = _pids.length;\n        require(len > 0, \"!pids\");\n\n        for (uint256 i = 0; i < len; i++) {\n            IBooster.PoolInfo memory poolInfo = booster.poolInfo(_pids[i]);\n            IRewardStaking baseRewardPool = IRewardStaking(poolInfo.crvRewards);\n            baseRewardPool.processIdleRewards();\n        }\n    }\n\n    /**\n     * @notice Invoke processIdleRewards for each pool address.\n     * It is useful to process base pools and virtual pools.\n     * @param _pools Array of pool addresses\n     */\n    function processIdleRewardsByAddress(address[] memory _pools) external {\n        uint256 len = _pools.length;\n        require(len > 0, \"!pools\");\n\n        for (uint256 i = 0; i < len; i++) {\n            IRewardStaking baseRewardPool = IRewardStaking(_pools[i]);\n            baseRewardPool.processIdleRewards();\n        }\n    }\n\n    // ----------------------------------------------------------------\n    // External  Views\n    // ----------------------------------------------------------------\n\n    /**\n     * @dev Loop through the booster pools and retrieve expired pools.\n     * @param start The start pid to look up\n     * @param daysToExpiration Number of days before period ends to be considred expired.\n     * @return expired poolIds.\n     */\n    function getExpiredPools(uint256 start, uint256 daysToExpiration) external view returns (PoolInfo[] memory) {\n        uint256 end = booster.poolLength();\n        PoolInfo[] memory pids = new PoolInfo[](end - start);\n        uint256 idx = 0;\n        for (uint256 i = start; i < end; i++) {\n            IBooster.PoolInfo memory poolInfo = booster.poolInfo(i);\n            if (_isExpiredWithoutQueuedRewards(poolInfo, daysToExpiration)) {\n                pids[idx++] = PoolInfo({\n                    pid: i,\n                    lptoken: poolInfo.lptoken,\n                    token: poolInfo.token,\n                    gauge: poolInfo.gauge,\n                    crvRewards: poolInfo.crvRewards,\n                    stash: poolInfo.stash,\n                    shutdown: poolInfo.shutdown\n                });\n            }\n        }\n        return _sliceArray(pids, idx);\n    }\n\n    /**\n     * @dev Loop through the booster pools and retrieve the expired pools with idle rewards.\n     * @param start The start pid\n     * @return idle poolIds.\n     */\n    function getIdlePoolIds(uint256 start) external view returns (uint256[] memory) {\n        uint256 end = booster.poolLength();\n        uint256[] memory pids = new uint256[](end - start);\n        uint256 idx = 0;\n        for (uint256 i = start; i < end; i++) {\n            if (_isExpiredWithQueuedRewards(i)) {\n                pids[idx++] = i;\n            }\n        }\n        return _sliceArray(pids, idx);\n    }\n\n    /**\n     * @dev Loop through the booster pools (base and virtual) and retrieve the expired ones with idle rewards.\n     * @param start The start pid\n     * @return idle pool addresses.\n     */\n    function getIdleBaseAndVirtualPools(uint256 start) external view returns (address[] memory) {\n        uint256 end = booster.poolLength();\n        // Create array with extra room for virtual pools\n        address[] memory idlePools = new address[]((end - start) * 2);\n        uint256 idx = 0;\n        for (uint256 i = start; i < end; i++) {\n            IBooster.PoolInfo memory poolInfo = booster.poolInfo(i);\n            address[] memory virtualRewardPools = _getVirtualRewardPools(poolInfo.crvRewards);\n            uint256 virtualRewardPoolsLength = virtualRewardPools.length;\n            for (uint256 j = 0; j < virtualRewardPoolsLength; j++) {\n                address virtualRewardPool = virtualRewardPools[j];\n                if (_isExpiredWithQueuedRewards(virtualRewardPool)) {\n                    idlePools[idx++] = virtualRewardPool;\n                }\n            }\n            // Evaluate base reward pools\n            if (_isExpiredWithQueuedRewards(poolInfo.crvRewards)) {\n                idlePools[idx++] = poolInfo.crvRewards;\n            }\n        }\n        return _sliceArray(idlePools, idx);\n    }\n\n    // ----------------------------------------------------------------\n    // Internal\n    // ----------------------------------------------------------------\n\n    /// @dev evaluates if a given pool (by pid) is expired or about to expired if daysToExpiration > 0\n    function _isExpiredWithoutQueuedRewards(IBooster.PoolInfo memory poolInfo, uint256 daysToExpiration)\n        internal\n        view\n        returns (bool)\n    {\n        // Ignore shutdown pools early\n        if (poolInfo.shutdown) return false;\n\n        IBaseRewardPool baseRewardPool = IBaseRewardPool(poolInfo.crvRewards);\n        if (baseRewardPool.queuedRewards() > 0) return false;\n\n        // If it is expired return the value\n        uint256 periodFinish = baseRewardPool.periodFinish();\n        if (block.timestamp > periodFinish) return true;\n\n        //If it is not expired yet, evaluate if it is about to expire\n        uint256 lastTimeRewardApplicable = baseRewardPool.lastTimeRewardApplicable();\n        uint256 daysToNextEarmark = (periodFinish - lastTimeRewardApplicable) / 86400;\n\n        return daysToNextEarmark <= daysToExpiration;\n    }\n\n    /// @dev evaluates if a given pool (by pid) is expired with queued rewards.\n    function _isExpiredWithQueuedRewards(uint256 pid) internal view returns (bool) {\n        IBooster.PoolInfo memory poolInfo = booster.poolInfo(pid);\n        // Ignore shutdown pools early\n        if (poolInfo.shutdown) return false;\n\n        return _isExpiredWithQueuedRewards(poolInfo.crvRewards);\n    }\n\n    /// @dev evaluates if a given pool (by address) is expired with queued rewards.\n    function _isExpiredWithQueuedRewards(address crvRewards) internal view returns (bool) {\n        IBaseRewardPool baseRewardPool = IBaseRewardPool(crvRewards);\n        if (baseRewardPool.queuedRewards() == 0) return false;\n\n        return (block.timestamp > baseRewardPool.periodFinish());\n    }\n\n    /// @dev gets all virtual pools linked to a base reward pool.\n    function _getVirtualRewardPools(address crvRewards) internal view returns (address[] memory) {\n        IBaseRewardPool baseRewardPool = IBaseRewardPool(crvRewards);\n\n        uint256 extraRewardsLength = baseRewardPool.extraRewardsLength();\n        address[] memory virtualBalanceRewardPools = new address[](extraRewardsLength);\n        for (uint256 i = 0; i < extraRewardsLength; i++) {\n            virtualBalanceRewardPools[i] = baseRewardPool.extraRewards(i);\n        }\n        return virtualBalanceRewardPools;\n    }\n\n    function _sliceArray(PoolInfo[] memory _arr, uint256 length) internal pure returns (PoolInfo[] memory) {\n        PoolInfo[] memory arr = new PoolInfo[](length);\n        for (uint256 i = 0; i < length; i++) {\n            arr[i] = _arr[i];\n        }\n        return arr;\n    }\n\n    function _sliceArray(uint256[] memory _arr, uint256 length) internal pure returns (uint256[] memory) {\n        uint256[] memory arr = new uint256[](length);\n        for (uint256 i = 0; i < length; i++) {\n            arr[i] = _arr[i];\n        }\n        return arr;\n    }\n\n    function _sliceArray(address[] memory _arr, uint256 length) internal pure returns (address[] memory) {\n        address[] memory arr = new address[](length);\n        for (uint256 i = 0; i < length; i++) {\n            arr[i] = _arr[i];\n        }\n        return arr;\n    }\n}\n"
      }
    },
    "settings": {
      "metadata": {
        "bytecodeHash": "none"
      },
      "optimizer": {
        "enabled": true,
        "runs": 800
      },
      "outputSelection": {
        "*": {
          "*": [
            "evm.bytecode",
            "evm.deployedBytecode",
            "devdoc",
            "userdoc",
            "metadata",
            "abi"
          ]
        }
      },
      "libraries": {}
    }
  }}