creation_sourcecode: // SPDX-License-Identifier: BUSL-1.1
  pragma solidity 0.8.20;
  
  /// @title Errors which occur inside AmmTreasury's method execution.
  library AmmErrors {
      // 300-399-AMM
      /// @notice Liquidity Pool balance is equal 0.
      string public constant LIQUIDITY_POOL_IS_EMPTY = "IPOR_300";
  
      /// @notice Liquidity Pool balance is too low, should be equal or higher than 0.
      string public constant LIQUIDITY_POOL_AMOUNT_TOO_LOW = "IPOR_301";
  
      /// @notice Liquidity Pool Collateral Ratio exceeded. Liquidity Pool Collateral Ratio is higher than configured in AmmTreasury maximum liquidity pool collateral ratio.
      string public constant LP_COLLATERAL_RATIO_EXCEEDED = "IPOR_302";
  
      /// @notice Liquidity Pool Collateral Ratio Per Leg exceeded. Liquidity Pool Collateral Ratio per leg is higher than configured in AmmTreasury maximum liquidity pool collateral ratio per leg.
      string public constant LP_COLLATERAL_RATIO_PER_LEG_EXCEEDED = "IPOR_303";
  
      /// @notice Liquidity Pool Balance is too high
      string public constant LIQUIDITY_POOL_BALANCE_IS_TOO_HIGH = "IPOR_304";
  
      /// @notice Swap cannot be closed because liquidity pool is too low for payid out cash. Situation should never happen where Liquidity Pool is insolvent.
      string public constant CANNOT_CLOSE_SWAP_LP_IS_TOO_LOW = "IPOR_305";
  
      /// @notice Swap id used in input has incorrect value (like 0) or not exists.
      string public constant INCORRECT_SWAP_ID = "IPOR_306";
  
      /// @notice Swap has incorrect status.
      string public constant INCORRECT_SWAP_STATUS = "IPOR_307";
  
      /// @notice Leverage given as a parameter when opening swap is lower than configured in AmmTreasury minimum leverage.
      string public constant LEVERAGE_TOO_LOW = "IPOR_308";
  
      /// @notice Leverage given as a parameter when opening swap is higher than configured in AmmTreasury maxumum leverage.
      string public constant LEVERAGE_TOO_HIGH = "IPOR_309";
  
      /// @notice Total amount given as a parameter when opening swap is too low. Cannot be equal zero.
      string public constant TOTAL_AMOUNT_TOO_LOW = "IPOR_310";
  
      /// @notice Total amount given as a parameter when opening swap is lower than sum of liquidation deposit amount and ipor publication fee.
      string public constant TOTAL_AMOUNT_LOWER_THAN_FEE = "IPOR_311";
  
      /// @notice Amount of collateral used to open swap is higher than configured in AmmTreasury max swap collateral amount
      string public constant COLLATERAL_AMOUNT_TOO_HIGH = "IPOR_312";
  
      /// @notice Acceptable fixed interest rate defined by traded exceeded.
      string public constant ACCEPTABLE_FIXED_INTEREST_RATE_EXCEEDED = "IPOR_313";
  
      /// @notice Swap Notional Amount is higher than Total Notional for specific leg.
      string public constant SWAP_NOTIONAL_HIGHER_THAN_TOTAL_NOTIONAL = "IPOR_314";
  
      /// @notice Number of swaps per leg which are going to be liquidated is too high, is higher than configured in AmmTreasury liquidation leg limit.
      string public constant MAX_LENGTH_LIQUIDATED_SWAPS_PER_LEG_EXCEEDED = "IPOR_315";
  
      /// @notice Sum of SOAP and Liquidity Pool Balance is lower than zero.
      /// @dev SOAP can be negative, Sum of SOAP and Liquidity Pool Balance can be negative, but this is undesirable.
      string public constant SOAP_AND_LP_BALANCE_SUM_IS_TOO_LOW = "IPOR_316";
  
      /// @notice Calculation timestamp is earlier than last SOAP rebalance timestamp.
      string public constant CALC_TIMESTAMP_LOWER_THAN_SOAP_REBALANCE_TIMESTAMP = "IPOR_317";
  
      /// @notice Calculation timestamp is lower than  Swap's open timestamp.
      string public constant CALC_TIMESTAMP_LOWER_THAN_SWAP_OPEN_TIMESTAMP = "IPOR_318";
  
      /// @notice Closing timestamp is lower than Swap's open timestamp.
      string public constant CLOSING_TIMESTAMP_LOWER_THAN_SWAP_OPEN_TIMESTAMP = "IPOR_319";
  
      /// @notice Swap cannot be closed because sender is not a buyer nor liquidator.
      string public constant CANNOT_CLOSE_SWAP_SENDER_IS_NOT_BUYER_NOR_LIQUIDATOR = "IPOR_320";
  
      /// @notice Interest from Strategy is below zero.
      string public constant INTEREST_FROM_STRATEGY_EXCEEDED_THRESHOLD = "IPOR_321";
  
      /// @notice IPOR publication fee balance is too low.
      string public constant PUBLICATION_FEE_BALANCE_IS_TOO_LOW = "IPOR_322";
  
      /// @notice The caller must be the Token Manager (Smart Contract responsible for managing token total supply).
      string public constant CALLER_NOT_TOKEN_MANAGER = "IPOR_323";
  
      /// @notice Deposit amount is too low.
      string public constant DEPOSIT_AMOUNT_IS_TOO_LOW = "IPOR_324";
  
      /// @notice Vault balance is lower than deposit value.
      string public constant VAULT_BALANCE_LOWER_THAN_DEPOSIT_VALUE = "IPOR_325";
  
      /// @notice Treasury balance is too low.
      string public constant TREASURY_BALANCE_IS_TOO_LOW = "IPOR_326";
  
      /// @notice Swap cannot be closed because closing timestamp is lower than swap's open timestamp in general.
      string public constant CANNOT_CLOSE_SWAP_CLOSING_IS_TOO_EARLY = "IPOR_327";
  
      /// @notice Swap cannot be closed because closing timestamp is lower than swap's open timestamp for buyer.
      string public constant CANNOT_CLOSE_SWAP_CLOSING_IS_TOO_EARLY_FOR_BUYER = "IPOR_328";
  
      /// @notice Swap cannot be closed and unwind because is too late
      string public constant CANNOT_UNWIND_CLOSING_TOO_LATE = "IPOR_329";
  
      /// @notice Unsupported swap tenor
      string public constant UNSUPPORTED_SWAP_TENOR = "IPOR_330";
  
      /// @notice Sender is not AMM (is not a IporProtocolRouter contract)
      string public constant SENDER_NOT_AMM = "IPOR_331";
  
      /// @notice Storage id is not time weighted notional group
      string public constant STORAGE_ID_IS_NOT_TIME_WEIGHTED_NOTIONAL = "IPOR_332";
  
      /// @notice Spread function is not supported
      string public constant FUNCTION_NOT_SUPPORTED = "IPOR_333";
  
      /// @notice Unsupported direction
      string public constant UNSUPPORTED_DIRECTION = "IPOR_334";
  
      /// @notice Invalid notional
      string public constant INVALID_NOTIONAL = "IPOR_335";
  
      /// @notice Average interest rate cannot be zero when open swap
      string public constant AVERAGE_INTEREST_RATE_WHEN_OPEN_SWAP_CANNOT_BE_ZERO = "IPOR_336";
  
      /// @notice Average interest rate cannot be zero when close swap
      string public constant AVERAGE_INTEREST_RATE_WHEN_CLOSE_SWAP_CANNOT_BE_ZERO = "IPOR_337";
  
      /// @notice Submit ETH to stETH contract failed.
      string public constant STETH_SUBMIT_FAILED = "IPOR_338";
  
      /// @notice Collateral is not sufficient to cover unwind swap
      string public constant COLLATERAL_IS_NOT_SUFFICIENT_TO_COVER_UNWIND_SWAP = "IPOR_339";
  
      /// @notice Error when withdraw from asset management is not enough to cover transfer amount to buyer and/or beneficiary
      string public constant ASSET_MANAGEMENT_WITHDRAW_NOT_ENOUGH = "IPOR_340";
  
      /// @notice Swap cannot be closed with unwind because action is too early, depends on value of configuration parameter `timeAfterOpenAllowedToCloseSwapWithUnwinding`
      string public constant CANNOT_CLOSE_SWAP_WITH_UNWIND_ACTION_IS_TOO_EARLY = "IPOR_341";
  }
  
  library AmmPoolsErrors {
      // 400-499-Amm Pools
      /// @notice IP Token Value which should be minted is too low
      string public constant IP_TOKEN_MINT_AMOUNT_TOO_LOW = "IPOR_400";
  
      /// @notice Amount which should be burned is too low
      string public constant IP_TOKEN_BURN_AMOUNT_TOO_LOW = "IPOR_401";
  
      /// @notice Liquidity Pool Collateral Ration is exceeded when redeeming
      string public constant REDEEM_LP_COLLATERAL_RATIO_EXCEEDED = "IPOR_402";
  
      /// @notice User cannot redeem underlying tokens because ipToken on his balance is too low
      string public constant CANNOT_REDEEM_IP_TOKEN_TOO_LOW = "IPOR_403";
  
      /// @notice Caller is not a treasury manager, not match address defined in IPOR Protocol configuration
      string public constant CALLER_NOT_TREASURY_MANAGER = "IPOR_404";
  
      /// @notice Account cannot redeem ip tokens because amount of underlying tokens for transfer to beneficiary is too low.
      string public constant CANNOT_REDEEM_ASSET_AMOUNT_TOO_LOW = "IPOR_405";
  
      /// @notice Sender is not a publication fee transferer, not match address defined in IporConfiguration in key AMM_TREASURY_PUBLICATION_FEE_TRANSFERER
      string public constant CALLER_NOT_PUBLICATION_FEE_TRANSFERER = "IPOR_406";
  
      /// @notice Asset Management Balance is empty
      string public constant ASSET_MANAGEMENT_BALANCE_IS_EMPTY = "IPOR_407";
  
      /// @notice Incorrect AMM Treasury and Asset Management Ratio
      string public constant AMM_TREASURY_ASSET_MANAGEMENT_RATIO = "IPOR_408";
  
      /// @notice Insufficient ERC20 balance
      string public constant INSUFFICIENT_ERC20_BALANCE = "IPOR_409";
  
      /// @notice Caller is not appointed to rebalance
      string public constant CALLER_NOT_APPOINTED_TO_REBALANCE = "IPOR_410";
  
      /// @notice Invalid redeem fee rate
      string public constant CFG_INVALID_REDEEM_FEE_RATE = "IPOR_411";
  
      /// @notice Invalid redeem lp max collateral ratio
      string public constant CFG_INVALID_REDEEM_LP_MAX_COLLATERAL_RATIO = "IPOR_412";
  }
  
  library IporErrors {
      /// @notice Error when address is wrong
      error WrongAddress(string errorCode, address wrongAddress, string message);
  
      /// @notice Error when amount is wrong
      error WrongAmount(string errorCode, uint256 value);
  
      /// @notice Error when caller is not an ipor protocol router
      error CallerNotIporProtocolRouter(string errorCode, address caller);
  
      /// @notice Error when caller is not a pause guardian
      error CallerNotPauseGuardian(string errorCode, address caller);
  
      /// @notice Error when caller is not a AmmTreasury contract
      error CallerNotAmmTreasury(string errorCode, address caller);
  
      /// @notice Error when given direction is not supported
      error UnsupportedDirection(string errorCode, uint256 direction);
  
      /// @notice Error when given asset is not supported
      error UnsupportedAsset(string errorCode, address asset);
  
      /// @notice Error when given asset is not supported
      error UnsupportedAssetPair(string errorCode, address poolAsset, address inputAsset);
  
      /// @notice Error when given module is not supported
      error UnsupportedModule(string errorCode, address asset);
  
      /// @notice Error when given tenor is not supported
      error UnsupportedTenor(string errorCode, uint256 tenor);
  
      /// @notice Error when Input Asset total amount is too low
      error InputAssetTotalAmountTooLow(string errorCode, uint256 value);
  
      /// @dev Error appears if user/account doesn't have enough balance to open a swap with a specific totalAmount
      error InputAssetBalanceTooLow(string errorCode, address inputAsset, uint256 inputAssetBalance, uint256 totalAmount);
  
      // 000-199 - general codes
  
      /// @notice General problem, address is wrong
      string public constant WRONG_ADDRESS = "IPOR_000";
  
      /// @notice General problem. Wrong decimals
      string public constant WRONG_DECIMALS = "IPOR_001";
  
      /// @notice General problem, addresses mismatch
      string public constant ADDRESSES_MISMATCH = "IPOR_002";
  
      /// @notice Sender's asset balance is too low to transfer and to open a swap
      string public constant SENDER_ASSET_BALANCE_TOO_LOW = "IPOR_003";
  
      /// @notice Value is not greater than zero
      string public constant VALUE_NOT_GREATER_THAN_ZERO = "IPOR_004";
  
      /// @notice Input arrays length mismatch
      string public constant INPUT_ARRAYS_LENGTH_MISMATCH = "IPOR_005";
  
      /// @notice Amount is too low to transfer
      string public constant NOT_ENOUGH_AMOUNT_TO_TRANSFER = "IPOR_006";
  
      /// @notice msg.sender is not an appointed owner, so cannot confirm his appointment to be an owner of a specific smart contract
      string public constant SENDER_NOT_APPOINTED_OWNER = "IPOR_007";
  
      /// @notice only Router can have access to function
      string public constant CALLER_NOT_IPOR_PROTOCOL_ROUTER = "IPOR_008";
  
      /// @notice Chunk size is equal to zero
      string public constant CHUNK_SIZE_EQUAL_ZERO = "IPOR_009";
  
      /// @notice Chunk size is too big
      string public constant CHUNK_SIZE_TOO_BIG = "IPOR_010";
  
      /// @notice Caller is not a pause guardian
      string public constant CALLER_NOT_PAUSE_GUARDIAN = "IPOR_011";
  
      /// @notice Request contains invalid method signature, which is not supported by the Ipor Protocol Router
      string public constant ROUTER_INVALID_SIGNATURE = "IPOR_012";
  
      /// @notice Only AMM Treasury can have access to function
      string public constant CALLER_NOT_AMM_TREASURY = "IPOR_013";
  
      /// @notice Caller is not an owner
      string public constant CALLER_NOT_OWNER = "IPOR_014";
  
      /// @notice Method is paused
      string public constant METHOD_PAUSED = "IPOR_015";
  
      /// @notice Reentrancy appears
      string public constant REENTRANCY = "IPOR_016";
  
      /// @notice Asset is not supported
      string public constant ASSET_NOT_SUPPORTED = "IPOR_017";
  
      /// @notice Return back ETH failed in Ipor Protocol Router
      string public constant ROUTER_RETURN_BACK_ETH_FAILED = "IPOR_018";
  
      /// @notice Risk indicators are expired
      string public constant RISK_INDICATORS_EXPIRED = "IPOR_019";
  
      /// @notice Signature is invalid for risk indicators
      string public constant RISK_INDICATORS_SIGNATURE_INVALID = "IPOR_020";
  
      /// @notice Input Asset used by user is not supported
      string public constant INPUT_ASSET_NOT_SUPPORTED = "IPOR_021";
  
      /// @notice Module Asset Management is not supported
      string public constant UNSUPPORTED_MODULE_ASSET_MANAGEMENT = "IPOR_022";
  }
  
  // OpenZeppelin Contracts (last updated v4.9.0) (token/ERC20/IERC20.sol)
  
  /**
   * @dev Interface of the ERC20 standard as defined in the EIP.
   */
  interface IERC20 {
      /**
       * @dev Emitted when `value` tokens are moved from one account (`from`) to
       * another (`to`).
       *
       * Note that `value` may be zero.
       */
      event Transfer(address indexed from, address indexed to, uint256 value);
  
      /**
       * @dev Emitted when the allowance of a `spender` for an `owner` is set by
       * a call to {approve}. `value` is the new allowance.
       */
      event Approval(address indexed owner, address indexed spender, uint256 value);
  
      /**
       * @dev Returns the amount of tokens in existence.
       */
      function totalSupply() external view returns (uint256);
  
      /**
       * @dev Returns the amount of tokens owned by `account`.
       */
      function balanceOf(address account) external view returns (uint256);
  
      /**
       * @dev Moves `amount` tokens from the caller's account to `to`.
       *
       * Returns a boolean value indicating whether the operation succeeded.
       *
       * Emits a {Transfer} event.
       */
      function transfer(address to, uint256 amount) external returns (bool);
  
      /**
       * @dev Returns the remaining number of tokens that `spender` will be
       * allowed to spend on behalf of `owner` through {transferFrom}. This is
       * zero by default.
       *
       * This value changes when {approve} or {transferFrom} are called.
       */
      function allowance(address owner, address spender) external view returns (uint256);
  
      /**
       * @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
       *
       * Returns a boolean value indicating whether the operation succeeded.
       *
       * IMPORTANT: Beware that changing an allowance with this method brings the risk
       * that someone may use both the old and the new allowance by unfortunate
       * transaction ordering. One possible solution to mitigate this race
       * condition is to first reduce the spender's allowance to 0 and set the
       * desired value afterwards:
       * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
       *
       * Emits an {Approval} event.
       */
      function approve(address spender, uint256 amount) external returns (bool);
  
      /**
       * @dev Moves `amount` tokens from `from` to `to` using the
       * allowance mechanism. `amount` is then deducted from the caller's
       * allowance.
       *
       * Returns a boolean value indicating whether the operation succeeded.
       *
       * Emits a {Transfer} event.
       */
      function transferFrom(address from, address to, uint256 amount) external returns (bool);
  }
  
  // OpenZeppelin Contracts (last updated v4.9.0) (token/ERC20/extensions/IERC20Permit.sol)
  
  /**
   * @dev Interface of the ERC20 Permit extension allowing approvals to be made via signatures, as defined in
   * https://eips.ethereum.org/EIPS/eip-2612[EIP-2612].
   *
   * Adds the {permit} method, which can be used to change an account's ERC20 allowance (see {IERC20-allowance}) by
   * presenting a message signed by the account. By not relying on {IERC20-approve}, the token holder account doesn't
   * need to send a transaction, and thus is not required to hold Ether at all.
   */
  interface IERC20Permit {
      /**
       * @dev Sets `value` as the allowance of `spender` over ``owner``'s tokens,
       * given ``owner``'s signed approval.
       *
       * IMPORTANT: The same issues {IERC20-approve} has related to transaction
       * ordering also apply here.
       *
       * Emits an {Approval} event.
       *
       * Requirements:
       *
       * - `spender` cannot be the zero address.
       * - `deadline` must be a timestamp in the future.
       * - `v`, `r` and `s` must be a valid `secp256k1` signature from `owner`
       * over the EIP712-formatted function arguments.
       * - the signature must use ``owner``'s current nonce (see {nonces}).
       *
       * For more information on the signature format, see the
       * https://eips.ethereum.org/EIPS/eip-2612#specification[relevant EIP
       * section].
       */
      function permit(
          address owner,
          address spender,
          uint256 value,
          uint256 deadline,
          uint8 v,
          bytes32 r,
          bytes32 s
      ) external;
  
      /**
       * @dev Returns the current nonce for `owner`. This value must be
       * included whenever a signature is generated for {permit}.
       *
       * Every successful call to {permit} increases ``owner``'s nonce by one. This
       * prevents a signature from being used multiple times.
       */
      function nonces(address owner) external view returns (uint256);
  
      /**
       * @dev Returns the domain separator used in the encoding of the signature for {permit}, as defined by {EIP712}.
       */
      // solhint-disable-next-line func-name-mixedcase
      function DOMAIN_SEPARATOR() external view returns (bytes32);
  }
  
  // OpenZeppelin Contracts (last updated v4.9.0) (utils/Address.sol)
  
  /**
   * @dev Collection of functions related to the address type
   */
  library Address {
      /**
       * @dev Returns true if `account` is a contract.
       *
       * [IMPORTANT]
       * ====
       * It is unsafe to assume that an address for which this function returns
       * false is an externally-owned account (EOA) and not a contract.
       *
       * Among others, `isContract` will return false for the following
       * types of addresses:
       *
       *  - an externally-owned account
       *  - a contract in construction
       *  - an address where a contract will be created
       *  - an address where a contract lived, but was destroyed
       *
       * Furthermore, `isContract` will also return true if the target contract within
       * the same transaction is already scheduled for destruction by `SELFDESTRUCT`,
       * which only has an effect at the end of a transaction.
       * ====
       *
       * [IMPORTANT]
       * ====
       * You shouldn't rely on `isContract` to protect against flash loan attacks!
       *
       * Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets
       * like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract
       * constructor.
       * ====
       */
      function isContract(address account) internal view returns (bool) {
          // This method relies on extcodesize/address.code.length, which returns 0
          // for contracts in construction, since the code is only stored at the end
          // of the constructor execution.
  
          return account.code.length > 0;
      }
  
      /**
       * @dev Replacement for Solidity's `transfer`: sends `amount` wei to
       * `recipient`, forwarding all available gas and reverting on errors.
       *
       * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
       * of certain opcodes, possibly making contracts go over the 2300 gas limit
       * imposed by `transfer`, making them unable to receive funds via
       * `transfer`. {sendValue} removes this limitation.
       *
       * https://consensys.net/diligence/blog/2019/09/stop-using-soliditys-transfer-now/[Learn more].
       *
       * IMPORTANT: because control is transferred to `recipient`, care must be
       * taken to not create reentrancy vulnerabilities. Consider using
       * {ReentrancyGuard} or the
       * https://solidity.readthedocs.io/en/v0.8.0/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
       */
      function sendValue(address payable recipient, uint256 amount) internal {
          require(address(this).balance >= amount, "Address: insufficient balance");
  
          (bool success, ) = recipient.call{value: amount}("");
          require(success, "Address: unable to send value, recipient may have reverted");
      }
  
      /**
       * @dev Performs a Solidity function call using a low level `call`. A
       * plain `call` is an unsafe replacement for a function call: use this
       * function instead.
       *
       * If `target` reverts with a revert reason, it is bubbled up by this
       * function (like regular Solidity function calls).
       *
       * Returns the raw returned data. To convert to the expected return value,
       * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
       *
       * Requirements:
       *
       * - `target` must be a contract.
       * - calling `target` with `data` must not revert.
       *
       * _Available since v3.1._
       */
      function functionCall(address target, bytes memory data) internal returns (bytes memory) {
          return functionCallWithValue(target, data, 0, "Address: low-level call failed");
      }
  
      /**
       * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
       * `errorMessage` as a fallback revert reason when `target` reverts.
       *
       * _Available since v3.1._
       */
      function functionCall(
          address target,
          bytes memory data,
          string memory errorMessage
      ) internal returns (bytes memory) {
          return functionCallWithValue(target, data, 0, errorMessage);
      }
  
      /**
       * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
       * but also transferring `value` wei to `target`.
       *
       * Requirements:
       *
       * - the calling contract must have an ETH balance of at least `value`.
       * - the called Solidity function must be `payable`.
       *
       * _Available since v3.1._
       */
      function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) {
          return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
      }
  
      /**
       * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
       * with `errorMessage` as a fallback revert reason when `target` reverts.
       *
       * _Available since v3.1._
       */
      function functionCallWithValue(
          address target,
          bytes memory data,
          uint256 value,
          string memory errorMessage
      ) internal returns (bytes memory) {
          require(address(this).balance >= value, "Address: insufficient balance for call");
          (bool success, bytes memory returndata) = target.call{value: value}(data);
          return verifyCallResultFromTarget(target, success, returndata, errorMessage);
      }
  
      /**
       * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
       * but performing a static call.
       *
       * _Available since v3.3._
       */
      function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
          return functionStaticCall(target, data, "Address: low-level static call failed");
      }
  
      /**
       * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
       * but performing a static call.
       *
       * _Available since v3.3._
       */
      function functionStaticCall(
          address target,
          bytes memory data,
          string memory errorMessage
      ) internal view returns (bytes memory) {
          (bool success, bytes memory returndata) = target.staticcall(data);
          return verifyCallResultFromTarget(target, success, returndata, errorMessage);
      }
  
      /**
       * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
       * but performing a delegate call.
       *
       * _Available since v3.4._
       */
      function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
          return functionDelegateCall(target, data, "Address: low-level delegate call failed");
      }
  
      /**
       * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
       * but performing a delegate call.
       *
       * _Available since v3.4._
       */
      function functionDelegateCall(
          address target,
          bytes memory data,
          string memory errorMessage
      ) internal returns (bytes memory) {
          (bool success, bytes memory returndata) = target.delegatecall(data);
          return verifyCallResultFromTarget(target, success, returndata, errorMessage);
      }
  
      /**
       * @dev Tool to verify that a low level call to smart-contract was successful, and revert (either by bubbling
       * the revert reason or using the provided one) in case of unsuccessful call or if target was not a contract.
       *
       * _Available since v4.8._
       */
      function verifyCallResultFromTarget(
          address target,
          bool success,
          bytes memory returndata,
          string memory errorMessage
      ) internal view returns (bytes memory) {
          if (success) {
              if (returndata.length == 0) {
                  // only check isContract if the call was successful and the return data is empty
                  // otherwise we already know that it was a contract
                  require(isContract(target), "Address: call to non-contract");
              }
              return returndata;
          } else {
              _revert(returndata, errorMessage);
          }
      }
  
      /**
       * @dev Tool to verify that a low level call was successful, and revert if it wasn't, either by bubbling the
       * revert reason or using the provided one.
       *
       * _Available since v4.3._
       */
      function verifyCallResult(
          bool success,
          bytes memory returndata,
          string memory errorMessage
      ) internal pure returns (bytes memory) {
          if (success) {
              return returndata;
          } else {
              _revert(returndata, errorMessage);
          }
      }
  
      function _revert(bytes memory returndata, string memory errorMessage) private pure {
          // Look for revert reason and bubble it up if present
          if (returndata.length > 0) {
              // The easiest way to bubble the revert reason is using memory via assembly
              /// @solidity memory-safe-assembly
              assembly {
                  let returndata_size := mload(returndata)
                  revert(add(32, returndata), returndata_size)
              }
          } else {
              revert(errorMessage);
          }
      }
  }
  
  // OpenZeppelin Contracts v4.4.1 (utils/Context.sol)
  
  /**
   * @dev Provides information about the current execution context, including the
   * sender of the transaction and its data. While these are generally available
   * via msg.sender and msg.data, they should not be accessed in such a direct
   * manner, since when dealing with meta-transactions the account sending and
   * paying for execution may not be the actual sender (as far as an application
   * is concerned).
   *
   * This contract is only required for intermediate, library-like contracts.
   */
  abstract contract Context {
      function _msgSender() internal view virtual returns (address) {
          return msg.sender;
      }
  
      function _msgData() internal view virtual returns (bytes calldata) {
          return msg.data;
      }
  }
  
  /// @title Interface of ipToken - Liquidity Pool Token managed by Router in IPOR Protocol for a given asset.
  /// For more information refer to the documentation https://ipor-labs.gitbook.io/ipor-labs/automated-market-maker/liquidity-provisioning#liquidity-tokens
  interface IIpToken is IERC20 {
      /// @notice Gets the asset / stablecoin address which is associated with particular ipToken smart contract instance
      /// @return asset / stablecoin address
      function getAsset() external view returns (address);
  
      /// @notice Gets the Token Manager's address.
      function getTokenManager() external view returns (address);
  
      /// @notice Sets token manager's address. IpToken contract Owner only
      /// @dev only Token Manager can mint or burn ipTokens. Function emits `TokenManagerChanged` event.
      /// @param newTokenManager Token Managers's address
      function setTokenManager(address newTokenManager) external;
  
      /// @notice Creates the ipTokens in the `amount` given and assigns them to the `account`
      /// @dev Emits {Transfer} from ERC20 asset and {Mint} event from ipToken
      /// @param account to which the created ipTokens were assigned
      /// @param amount volume of ipTokens created
      function mint(address account, uint256 amount) external;
  
      /// @notice Burns the `amount` of ipTokens from `account`, reducing the total supply
      /// @dev Emits {Transfer} from ERC20 asset and {Burn} event from ipToken
      /// @param account from which burned ipTokens are taken
      /// @param amount volume of ipTokens that will be burned, represented in 18 decimals
      function burn(address account, uint256 amount) external;
  
      /// @notice Emitted after the `amount` ipTokens were mint and transferred to `account`.
      /// @param account address where ipTokens are transferred after minting
      /// @param amount of ipTokens minted, represented in 18 decimals
      event Mint(address indexed account, uint256 amount);
  
      /// @notice Emitted after `amount` ipTokens were transferred from `account` and burnt.
      /// @param account address from which ipTokens are transferred to be burned
      /// @param amount volume of ipTokens burned
      event Burn(address indexed account, uint256 amount);
  
      /// @notice Emitted when Token Manager address is changed by its owner.
      /// @param newTokenManager new address of Token Manager
      event TokenManagerChanged(address indexed newTokenManager);
  }
  
  // OpenZeppelin Contracts (last updated v4.9.0) (access/Ownable.sol)
  
  /**
   * @dev Contract module which provides a basic access control mechanism, where
   * there is an account (an owner) that can be granted exclusive access to
   * specific functions.
   *
   * By default, the owner account will be the one that deploys the contract. This
   * can later be changed with {transferOwnership}.
   *
   * This module is used through inheritance. It will make available the modifier
   * `onlyOwner`, which can be applied to your functions to restrict their use to
   * the owner.
   */
  abstract contract Ownable is Context {
      address private _owner;
  
      event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
  
      /**
       * @dev Initializes the contract setting the deployer as the initial owner.
       */
      constructor() {
          _transferOwnership(_msgSender());
      }
  
      /**
       * @dev Throws if called by any account other than the owner.
       */
      modifier onlyOwner() {
          _checkOwner();
          _;
      }
  
      /**
       * @dev Returns the address of the current owner.
       */
      function owner() public view virtual returns (address) {
          return _owner;
      }
  
      /**
       * @dev Throws if the sender is not the owner.
       */
      function _checkOwner() internal view virtual {
          require(owner() == _msgSender(), "Ownable: caller is not the owner");
      }
  
      /**
       * @dev Leaves the contract without owner. It will not be possible to call
       * `onlyOwner` functions. Can only be called by the current owner.
       *
       * NOTE: Renouncing ownership will leave the contract without an owner,
       * thereby disabling any functionality that is only available to the owner.
       */
      function renounceOwnership() public virtual onlyOwner {
          _transferOwnership(address(0));
      }
  
      /**
       * @dev Transfers ownership of the contract to a new account (`newOwner`).
       * Can only be called by the current owner.
       */
      function transferOwnership(address newOwner) public virtual onlyOwner {
          require(newOwner != address(0), "Ownable: new owner is the zero address");
          _transferOwnership(newOwner);
      }
  
      /**
       * @dev Transfers ownership of the contract to a new account (`newOwner`).
       * Internal function without access restriction.
       */
      function _transferOwnership(address newOwner) internal virtual {
          address oldOwner = _owner;
          _owner = newOwner;
          emit OwnershipTransferred(oldOwner, newOwner);
      }
  }
  
  // OpenZeppelin Contracts v4.4.1 (token/ERC20/extensions/IERC20Metadata.sol)
  
  /**
   * @dev Interface for the optional metadata functions from the ERC20 standard.
   *
   * _Available since v4.1._
   */
  interface IERC20Metadata is IERC20 {
      /**
       * @dev Returns the name of the token.
       */
      function name() external view returns (string memory);
  
      /**
       * @dev Returns the symbol of the token.
       */
      function symbol() external view returns (string memory);
  
      /**
       * @dev Returns the decimals places of the token.
       */
      function decimals() external view returns (uint8);
  }
  
  /// @title Extended version of OpenZeppelin Ownable contract with appointed owner
  abstract contract IporOwnable is Ownable {
      address private _appointedOwner;
  
      /// @notice Emitted when account is appointed to transfer ownership
      /// @param appointedOwner Address of appointed owner
      event AppointedToTransferOwnership(address indexed appointedOwner);
  
      modifier onlyAppointedOwner() {
          require(_appointedOwner == msg.sender, IporErrors.SENDER_NOT_APPOINTED_OWNER);
          _;
      }
  
      /// @notice Oppoint account to transfer ownership
      /// @param appointedOwner Address of appointed owner
      function transferOwnership(address appointedOwner) public override onlyOwner {
          require(appointedOwner != address(0), IporErrors.WRONG_ADDRESS);
          _appointedOwner = appointedOwner;
          emit AppointedToTransferOwnership(appointedOwner);
      }
  
      /// @notice Confirm transfer ownership
      /// @dev This is real transfer ownership in second step by appointed account
      function confirmTransferOwnership() external onlyAppointedOwner {
          _appointedOwner = address(0);
          _transferOwnership(msg.sender);
      }
  
      /// @notice Renounce ownership
      function renounceOwnership() public virtual override onlyOwner {
          _transferOwnership(address(0));
          _appointedOwner = address(0);
      }
  }
  
  // OpenZeppelin Contracts (last updated v4.9.0) (token/ERC20/ERC20.sol)
  
  /**
   * @dev Implementation of the {IERC20} interface.
   *
   * This implementation is agnostic to the way tokens are created. This means
   * that a supply mechanism has to be added in a derived contract using {_mint}.
   * For a generic mechanism see {ERC20PresetMinterPauser}.
   *
   * TIP: For a detailed writeup see our guide
   * https://forum.openzeppelin.com/t/how-to-implement-erc20-supply-mechanisms/226[How
   * to implement supply mechanisms].
   *
   * The default value of {decimals} is 18. To change this, you should override
   * this function so it returns a different value.
   *
   * We have followed general OpenZeppelin Contracts guidelines: functions revert
   * instead returning `false` on failure. This behavior is nonetheless
   * conventional and does not conflict with the expectations of ERC20
   * applications.
   *
   * Additionally, an {Approval} event is emitted on calls to {transferFrom}.
   * This allows applications to reconstruct the allowance for all accounts just
   * by listening to said events. Other implementations of the EIP may not emit
   * these events, as it isn't required by the specification.
   *
   * Finally, the non-standard {decreaseAllowance} and {increaseAllowance}
   * functions have been added to mitigate the well-known issues around setting
   * allowances. See {IERC20-approve}.
   */
  contract ERC20 is Context, IERC20, IERC20Metadata {
      mapping(address => uint256) private _balances;
  
      mapping(address => mapping(address => uint256)) private _allowances;
  
      uint256 private _totalSupply;
  
      string private _name;
      string private _symbol;
  
      /**
       * @dev Sets the values for {name} and {symbol}.
       *
       * All two of these values are immutable: they can only be set once during
       * construction.
       */
      constructor(string memory name_, string memory symbol_) {
          _name = name_;
          _symbol = symbol_;
      }
  
      /**
       * @dev Returns the name of the token.
       */
      function name() public view virtual override returns (string memory) {
          return _name;
      }
  
      /**
       * @dev Returns the symbol of the token, usually a shorter version of the
       * name.
       */
      function symbol() public view virtual override returns (string memory) {
          return _symbol;
      }
  
      /**
       * @dev Returns the number of decimals used to get its user representation.
       * For example, if `decimals` equals `2`, a balance of `505` tokens should
       * be displayed to a user as `5.05` (`505 / 10 ** 2`).
       *
       * Tokens usually opt for a value of 18, imitating the relationship between
       * Ether and Wei. This is the default value returned by this function, unless
       * it's overridden.
       *
       * NOTE: This information is only used for _display_ purposes: it in
       * no way affects any of the arithmetic of the contract, including
       * {IERC20-balanceOf} and {IERC20-transfer}.
       */
      function decimals() public view virtual override returns (uint8) {
          return 18;
      }
  
      /**
       * @dev See {IERC20-totalSupply}.
       */
      function totalSupply() public view virtual override returns (uint256) {
          return _totalSupply;
      }
  
      /**
       * @dev See {IERC20-balanceOf}.
       */
      function balanceOf(address account) public view virtual override returns (uint256) {
          return _balances[account];
      }
  
      /**
       * @dev See {IERC20-transfer}.
       *
       * Requirements:
       *
       * - `to` cannot be the zero address.
       * - the caller must have a balance of at least `amount`.
       */
      function transfer(address to, uint256 amount) public virtual override returns (bool) {
          address owner = _msgSender();
          _transfer(owner, to, amount);
          return true;
      }
  
      /**
       * @dev See {IERC20-allowance}.
       */
      function allowance(address owner, address spender) public view virtual override returns (uint256) {
          return _allowances[owner][spender];
      }
  
      /**
       * @dev See {IERC20-approve}.
       *
       * NOTE: If `amount` is the maximum `uint256`, the allowance is not updated on
       * `transferFrom`. This is semantically equivalent to an infinite approval.
       *
       * Requirements:
       *
       * - `spender` cannot be the zero address.
       */
      function approve(address spender, uint256 amount) public virtual override returns (bool) {
          address owner = _msgSender();
          _approve(owner, spender, amount);
          return true;
      }
  
      /**
       * @dev See {IERC20-transferFrom}.
       *
       * Emits an {Approval} event indicating the updated allowance. This is not
       * required by the EIP. See the note at the beginning of {ERC20}.
       *
       * NOTE: Does not update the allowance if the current allowance
       * is the maximum `uint256`.
       *
       * Requirements:
       *
       * - `from` and `to` cannot be the zero address.
       * - `from` must have a balance of at least `amount`.
       * - the caller must have allowance for ``from``'s tokens of at least
       * `amount`.
       */
      function transferFrom(address from, address to, uint256 amount) public virtual override returns (bool) {
          address spender = _msgSender();
          _spendAllowance(from, spender, amount);
          _transfer(from, to, amount);
          return true;
      }
  
      /**
       * @dev Atomically increases the allowance granted to `spender` by the caller.
       *
       * This is an alternative to {approve} that can be used as a mitigation for
       * problems described in {IERC20-approve}.
       *
       * Emits an {Approval} event indicating the updated allowance.
       *
       * Requirements:
       *
       * - `spender` cannot be the zero address.
       */
      function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
          address owner = _msgSender();
          _approve(owner, spender, allowance(owner, spender) + addedValue);
          return true;
      }
  
      /**
       * @dev Atomically decreases the allowance granted to `spender` by the caller.
       *
       * This is an alternative to {approve} that can be used as a mitigation for
       * problems described in {IERC20-approve}.
       *
       * Emits an {Approval} event indicating the updated allowance.
       *
       * Requirements:
       *
       * - `spender` cannot be the zero address.
       * - `spender` must have allowance for the caller of at least
       * `subtractedValue`.
       */
      function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {
          address owner = _msgSender();
          uint256 currentAllowance = allowance(owner, spender);
          require(currentAllowance >= subtractedValue, "ERC20: decreased allowance below zero");
          unchecked {
              _approve(owner, spender, currentAllowance - subtractedValue);
          }
  
          return true;
      }
  
      /**
       * @dev Moves `amount` of tokens from `from` to `to`.
       *
       * This internal function is equivalent to {transfer}, and can be used to
       * e.g. implement automatic token fees, slashing mechanisms, etc.
       *
       * Emits a {Transfer} event.
       *
       * Requirements:
       *
       * - `from` cannot be the zero address.
       * - `to` cannot be the zero address.
       * - `from` must have a balance of at least `amount`.
       */
      function _transfer(address from, address to, uint256 amount) internal virtual {
          require(from != address(0), "ERC20: transfer from the zero address");
          require(to != address(0), "ERC20: transfer to the zero address");
  
          _beforeTokenTransfer(from, to, amount);
  
          uint256 fromBalance = _balances[from];
          require(fromBalance >= amount, "ERC20: transfer amount exceeds balance");
          unchecked {
              _balances[from] = fromBalance - amount;
              // Overflow not possible: the sum of all balances is capped by totalSupply, and the sum is preserved by
              // decrementing then incrementing.
              _balances[to] += amount;
          }
  
          emit Transfer(from, to, amount);
  
          _afterTokenTransfer(from, to, amount);
      }
  
      /** @dev Creates `amount` tokens and assigns them to `account`, increasing
       * the total supply.
       *
       * Emits a {Transfer} event with `from` set to the zero address.
       *
       * Requirements:
       *
       * - `account` cannot be the zero address.
       */
      function _mint(address account, uint256 amount) internal virtual {
          require(account != address(0), "ERC20: mint to the zero address");
  
          _beforeTokenTransfer(address(0), account, amount);
  
          _totalSupply += amount;
          unchecked {
              // Overflow not possible: balance + amount is at most totalSupply + amount, which is checked above.
              _balances[account] += amount;
          }
          emit Transfer(address(0), account, amount);
  
          _afterTokenTransfer(address(0), account, amount);
      }
  
      /**
       * @dev Destroys `amount` tokens from `account`, reducing the
       * total supply.
       *
       * Emits a {Transfer} event with `to` set to the zero address.
       *
       * Requirements:
       *
       * - `account` cannot be the zero address.
       * - `account` must have at least `amount` tokens.
       */
      function _burn(address account, uint256 amount) internal virtual {
          require(account != address(0), "ERC20: burn from the zero address");
  
          _beforeTokenTransfer(account, address(0), amount);
  
          uint256 accountBalance = _balances[account];
          require(accountBalance >= amount, "ERC20: burn amount exceeds balance");
          unchecked {
              _balances[account] = accountBalance - amount;
              // Overflow not possible: amount <= accountBalance <= totalSupply.
              _totalSupply -= amount;
          }
  
          emit Transfer(account, address(0), amount);
  
          _afterTokenTransfer(account, address(0), amount);
      }
  
      /**
       * @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens.
       *
       * This internal function is equivalent to `approve`, and can be used to
       * e.g. set automatic allowances for certain subsystems, etc.
       *
       * Emits an {Approval} event.
       *
       * Requirements:
       *
       * - `owner` cannot be the zero address.
       * - `spender` cannot be the zero address.
       */
      function _approve(address owner, address spender, uint256 amount) internal virtual {
          require(owner != address(0), "ERC20: approve from the zero address");
          require(spender != address(0), "ERC20: approve to the zero address");
  
          _allowances[owner][spender] = amount;
          emit Approval(owner, spender, amount);
      }
  
      /**
       * @dev Updates `owner` s allowance for `spender` based on spent `amount`.
       *
       * Does not update the allowance amount in case of infinite allowance.
       * Revert if not enough allowance is available.
       *
       * Might emit an {Approval} event.
       */
      function _spendAllowance(address owner, address spender, uint256 amount) internal virtual {
          uint256 currentAllowance = allowance(owner, spender);
          if (currentAllowance != type(uint256).max) {
              require(currentAllowance >= amount, "ERC20: insufficient allowance");
              unchecked {
                  _approve(owner, spender, currentAllowance - amount);
              }
          }
      }
  
      /**
       * @dev Hook that is called before any transfer of tokens. This includes
       * minting and burning.
       *
       * Calling conditions:
       *
       * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
       * will be transferred to `to`.
       * - when `from` is zero, `amount` tokens will be minted for `to`.
       * - when `to` is zero, `amount` of ``from``'s tokens will be burned.
       * - `from` and `to` are never both zero.
       *
       * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
       */
      function _beforeTokenTransfer(address from, address to, uint256 amount) internal virtual {}
  
      /**
       * @dev Hook that is called after any transfer of tokens. This includes
       * minting and burning.
       *
       * Calling conditions:
       *
       * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
       * has been transferred to `to`.
       * - when `from` is zero, `amount` tokens have been minted for `to`.
       * - when `to` is zero, `amount` of ``from``'s tokens have been burned.
       * - `from` and `to` are never both zero.
       *
       * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
       */
      function _afterTokenTransfer(address from, address to, uint256 amount) internal virtual {}
  }
  
  // OpenZeppelin Contracts (last updated v4.9.0) (token/ERC20/utils/SafeERC20.sol)
  
  /**
   * @title SafeERC20
   * @dev Wrappers around ERC20 operations that throw on failure (when the token
   * contract returns false). Tokens that return no value (and instead revert or
   * throw on failure) are also supported, non-reverting calls are assumed to be
   * successful.
   * To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract,
   * which allows you to call the safe operations as `token.safeTransfer(...)`, etc.
   */
  library SafeERC20 {
      using Address for address;
  
      /**
       * @dev Transfer `value` amount of `token` from the calling contract to `to`. If `token` returns no value,
       * non-reverting calls are assumed to be successful.
       */
      function safeTransfer(IERC20 token, address to, uint256 value) internal {
          _callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value));
      }
  
      /**
       * @dev Transfer `value` amount of `token` from `from` to `to`, spending the approval given by `from` to the
       * calling contract. If `token` returns no value, non-reverting calls are assumed to be successful.
       */
      function safeTransferFrom(IERC20 token, address from, address to, uint256 value) internal {
          _callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value));
      }
  
      /**
       * @dev Deprecated. This function has issues similar to the ones found in
       * {IERC20-approve}, and its usage is discouraged.
       *
       * Whenever possible, use {safeIncreaseAllowance} and
       * {safeDecreaseAllowance} instead.
       */
      function safeApprove(IERC20 token, address spender, uint256 value) internal {
          // safeApprove should only be called when setting an initial allowance,
          // or when resetting it to zero. To increase and decrease it, use
          // 'safeIncreaseAllowance' and 'safeDecreaseAllowance'
          require(
              (value == 0) || (token.allowance(address(this), spender) == 0),
              "SafeERC20: approve from non-zero to non-zero allowance"
          );
          _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value));
      }
  
      /**
       * @dev Increase the calling contract's allowance toward `spender` by `value`. If `token` returns no value,
       * non-reverting calls are assumed to be successful.
       */
      function safeIncreaseAllowance(IERC20 token, address spender, uint256 value) internal {
          uint256 oldAllowance = token.allowance(address(this), spender);
          _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, oldAllowance + value));
      }
  
      /**
       * @dev Decrease the calling contract's allowance toward `spender` by `value`. If `token` returns no value,
       * non-reverting calls are assumed to be successful.
       */
      function safeDecreaseAllowance(IERC20 token, address spender, uint256 value) internal {
          unchecked {
              uint256 oldAllowance = token.allowance(address(this), spender);
              require(oldAllowance >= value, "SafeERC20: decreased allowance below zero");
              _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, oldAllowance - value));
          }
      }
  
      /**
       * @dev Set the calling contract's allowance toward `spender` to `value`. If `token` returns no value,
       * non-reverting calls are assumed to be successful. Compatible with tokens that require the approval to be set to
       * 0 before setting it to a non-zero value.
       */
      function forceApprove(IERC20 token, address spender, uint256 value) internal {
          bytes memory approvalCall = abi.encodeWithSelector(token.approve.selector, spender, value);
  
          if (!_callOptionalReturnBool(token, approvalCall)) {
              _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, 0));
              _callOptionalReturn(token, approvalCall);
          }
      }
  
      /**
       * @dev Use a ERC-2612 signature to set the `owner` approval toward `spender` on `token`.
       * Revert on invalid signature.
       */
      function safePermit(
          IERC20Permit token,
          address owner,
          address spender,
          uint256 value,
          uint256 deadline,
          uint8 v,
          bytes32 r,
          bytes32 s
      ) internal {
          uint256 nonceBefore = token.nonces(owner);
          token.permit(owner, spender, value, deadline, v, r, s);
          uint256 nonceAfter = token.nonces(owner);
          require(nonceAfter == nonceBefore + 1, "SafeERC20: permit did not succeed");
      }
  
      /**
       * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement
       * on the return value: the return value is optional (but if data is returned, it must not be false).
       * @param token The token targeted by the call.
       * @param data The call data (encoded using abi.encode or one of its variants).
       */
      function _callOptionalReturn(IERC20 token, bytes memory data) private {
          // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since
          // we're implementing it ourselves. We use {Address-functionCall} to perform this call, which verifies that
          // the target address contains contract code and also asserts for success in the low-level call.
  
          bytes memory returndata = address(token).functionCall(data, "SafeERC20: low-level call failed");
          require(returndata.length == 0 || abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed");
      }
  
      /**
       * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement
       * on the return value: the return value is optional (but if data is returned, it must not be false).
       * @param token The token targeted by the call.
       * @param data The call data (encoded using abi.encode or one of its variants).
       *
       * This is a variant of {_callOptionalReturn} that silents catches all reverts and returns a bool instead.
       */
      function _callOptionalReturnBool(IERC20 token, bytes memory data) private returns (bool) {
          // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since
          // we're implementing it ourselves. We cannot use {Address-functionCall} here since this should return false
          // and not revert is the subcall reverts.
  
          (bool success, bytes memory returndata) = address(token).call(data);
          return
              success && (returndata.length == 0 || abi.decode(returndata, (bool))) && Address.isContract(address(token));
      }
  }
  
  contract IpToken is IporOwnable, IIpToken, ERC20 {
      using SafeERC20 for IERC20;
  
      address private immutable _asset;
  
      uint8 private immutable _decimals;
  
      address private _tokenManager;
  
      modifier onlyTokenManager() {
          require(msg.sender == _tokenManager, AmmErrors.CALLER_NOT_TOKEN_MANAGER);
          _;
      }
  
      constructor(string memory name, string memory symbol, address asset) ERC20(name, symbol) {
          require(address(0) != asset, IporErrors.WRONG_ADDRESS);
          _asset = asset;
          _decimals = 18;
      }
  
      function decimals() public view override returns (uint8) {
          return _decimals;
      }
  
      function getAsset() external view override returns (address) {
          return _asset;
      }
  
      function getTokenManager() external view override returns (address) {
          return _tokenManager;
      }
  
      function setTokenManager(address newTokenManager) external override onlyOwner {
          require(newTokenManager != address(0), IporErrors.WRONG_ADDRESS);
          _tokenManager = newTokenManager;
          emit TokenManagerChanged(newTokenManager);
      }
  
      function mint(address account, uint256 amount) external override onlyTokenManager {
          require(amount > 0, AmmPoolsErrors.IP_TOKEN_MINT_AMOUNT_TOO_LOW);
          _mint(account, amount);
          emit Mint(account, amount);
      }
  
      function burn(address account, uint256 amount) external override onlyTokenManager {
          require(amount > 0, AmmPoolsErrors.IP_TOKEN_BURN_AMOUNT_TOO_LOW);
          _burn(account, amount);
          emit Burn(account, amount);
      }
  }
  