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bentoBox

owner

pause

tokenIn

amountIn

tokenOut

amountOutMin

route

processRoute

amountOut

renounceOwnership

resume

user

priviledge

setPriviledge

newOwner

transferOwnership

transferValueTo

amountValueTransfer

transferValueAndprocessRoute

amount0Delta

amount1Delta

data

uniswapV3SwapCallback

// SPDX-License-Identifier: GPL-3.0-or-later

pragma solidity >=0.5.0;
pragma experimental ABIEncoderV2;

/// @notice Trident pool interface.
interface IPool {
    /// @notice Executes a swap from one token to another.
    /// @dev The input tokens must've already been sent to the pool.
    /// @param data ABI-encoded params that the pool requires.
    /// @return finalAmountOut The amount of output tokens that were sent to the user.
    function swap(bytes calldata data) external returns (uint256 finalAmountOut);

    /// @notice Executes a swap from one token to another with a callback.
    /// @dev This function allows borrowing the output tokens and sending the input tokens in the callback.
    /// @param data ABI-encoded params that the pool requires.
    /// @return finalAmountOut The amount of output tokens that were sent to the user.
    function flashSwap(bytes calldata data) external returns (uint256 finalAmountOut);

    /// @notice Mints liquidity tokens.
    /// @param data ABI-encoded params that the pool requires.
    /// @return liquidity The amount of liquidity tokens that were minted for the user.
    function mint(bytes calldata data) external returns (uint256 liquidity);

    /// @notice Burns liquidity tokens.
    /// @dev The input LP tokens must've already been sent to the pool.
    /// @param data ABI-encoded params that the pool requires.
    /// @return withdrawnAmounts The amount of various output tokens that were sent to the user.
    function burn(bytes calldata data) external returns (TokenAmount[] memory withdrawnAmounts);

    /// @notice Burns liquidity tokens for a single output token.
    /// @dev The input LP tokens must've already been sent to the pool.
    /// @param data ABI-encoded params that the pool requires.
    /// @return amountOut The amount of output tokens that were sent to the user.
    function burnSingle(bytes calldata data) external returns (uint256 amountOut);

    /// @return A unique identifier for the pool type.
    function poolIdentifier() external pure returns (bytes32);

    /// @return An array of tokens supported by the pool.
    function getAssets() external view returns (address[] memory);

    /// @notice Simulates a trade and returns the expected output.
    /// @dev The pool does not need to include a trade simulator directly in itself - it can use a library.
    /// @param data ABI-encoded params that the pool requires.
    /// @return finalAmountOut The amount of output tokens that will be sent to the user if the trade is executed.
    function getAmountOut(bytes calldata data) external view returns (uint256 finalAmountOut);

    /// @notice Simulates a trade and returns the expected output.
    /// @dev The pool does not need to include a trade simulator directly in itself - it can use a library.
    /// @param data ABI-encoded params that the pool requires.
    /// @return finalAmountIn The amount of input tokens that are required from the user if the trade is executed.
    function getAmountIn(bytes calldata data) external view returns (uint256 finalAmountIn);

    /// @dev This event must be emitted on all swaps.
    event Swap(address indexed recipient, address indexed tokenIn, address indexed tokenOut, uint256 amountIn, uint256 amountOut);

    /// @dev This struct frames output tokens for burns.
    struct TokenAmount {
        address token;
        uint256 amount;
    }
}


interfaces/IPool.sol

// SPDX-License-Identifier: GPL-3.0-or-later

pragma solidity 0.8.10;

interface IWETH {
  function deposit() external payable;

  function transfer(address to, uint256 value) external returns (bool);

  function withdraw(uint256) external;
}


interfaces/IWETH.sol

// SPDX-License-Identifier: UNLICENSED

pragma solidity 0.8.10;

library InputStream {
  function createStream(bytes memory data) internal pure returns (uint256 stream) {
    assembly {
      stream := mload(0x40)
      mstore(0x40, add(stream, 64))
      mstore(stream, data)
      let length := mload(data)
      mstore(add(stream, 32), add(data, length))
    }
  }

  function isNotEmpty(uint256 stream) internal pure returns (bool) {
    uint256 pos;
    uint256 finish;
    assembly {
      pos := mload(stream)
      finish := mload(add(stream, 32))
    }
    return pos < finish;
  }

  function readUint8(uint256 stream) internal pure returns (uint8 res) {
    assembly {
      let pos := mload(stream)
      pos := add(pos, 1)
      res := mload(pos)
      mstore(stream, pos)
    }
  }

  function readUint16(uint256 stream) internal pure returns (uint16 res) {
    assembly {
      let pos := mload(stream)
      pos := add(pos, 2)
      res := mload(pos)
      mstore(stream, pos)
    }
  }

  function readUint24(uint256 stream) internal pure returns (uint24 res) {
    assembly {
      let pos := mload(stream)
      pos := add(pos, 3)
      res := mload(pos)
      mstore(stream, pos)
    }
  }

  function readUint32(uint256 stream) internal pure returns (uint32 res) {
    assembly {
      let pos := mload(stream)
      pos := add(pos, 4)
      res := mload(pos)
      mstore(stream, pos)
    }
  }

  function readUint(uint256 stream) internal pure returns (uint256 res) {
    assembly {
      let pos := mload(stream)
      pos := add(pos, 32)
      res := mload(pos)
      mstore(stream, pos)
    }
  }

  function readBytes32(uint256 stream) internal pure returns (bytes32 res) {
    assembly {
      let pos := mload(stream)
      pos := add(pos, 32)
      res := mload(pos)
      mstore(stream, pos)
    }
  }

  function readAddress(uint256 stream) internal pure returns (address res) {
    assembly {
      let pos := mload(stream)
      pos := add(pos, 20)
      res := mload(pos)
      mstore(stream, pos)
    }
  }

  function readBytes(uint256 stream) internal pure returns (bytes memory res) {
    assembly {
      let pos := mload(stream)
      res := add(pos, 32)
      let length := mload(res)
      mstore(stream, add(res, length))
    }
  }
}


contracts/InputStream.sol

// SPDX-License-Identifier: GPL-3.0-or-later

pragma solidity 0.8.10;

interface ITridentCLPool {
  function token0() external returns (address);
  function token1() external returns (address);

  function swap(
    address recipient,
    bool zeroForOne,
    int256 amountSpecified,
    uint160 sqrtPriceLimitX96,
    bool unwrapBento,
    bytes calldata data
  ) external returns (int256 amount0, int256 amount1);
}


interfaces/ITridentCLPool.sol

// SPDX-License-Identifier: GPL-3.0

pragma solidity >=0.5.0;

interface IUniswapV2Pair {
    event Approval(address indexed owner, address indexed spender, uint value);
    event Transfer(address indexed from, address indexed to, uint value);

    function name() external pure returns (string memory);
    function symbol() external pure returns (string memory);
    function decimals() external pure returns (uint8);
    function totalSupply() external view returns (uint);
    function balanceOf(address owner) external view returns (uint);
    function allowance(address owner, address spender) external view returns (uint);

    function approve(address spender, uint value) external returns (bool);
    function transfer(address to, uint value) external returns (bool);
    function transferFrom(address from, address to, uint value) external returns (bool);

    function DOMAIN_SEPARATOR() external view returns (bytes32);
    function PERMIT_TYPEHASH() external pure returns (bytes32);
    function nonces(address owner) external view returns (uint);

    function permit(address owner, address spender, uint value, uint deadline, uint8 v, bytes32 r, bytes32 s) external;

    event Mint(address indexed sender, uint amount0, uint amount1);
    event Burn(address indexed sender, uint amount0, uint amount1, address indexed to);
    event Swap(
        address indexed sender,
        uint amount0In,
        uint amount1In,
        uint amount0Out,
        uint amount1Out,
        address indexed to
    );
    event Sync(uint112 reserve0, uint112 reserve1);

    function MINIMUM_LIQUIDITY() external pure returns (uint);
    function factory() external view returns (address);
    function token0() external view returns (address);
    function token1() external view returns (address);
    function getReserves() external view returns (uint112 reserve0, uint112 reserve1, uint32 blockTimestampLast);
    function price0CumulativeLast() external view returns (uint);
    function price1CumulativeLast() external view returns (uint);
    function kLast() external view returns (uint);

    function mint(address to) external returns (uint liquidity);
    function burn(address to) external returns (uint amount0, uint amount1);
    function swap(uint amount0Out, uint amount1Out, address to, bytes calldata data) external;
    function skim(address to) external;
    function sync() external;

    function initialize(address, address) external;
}

interfaces/IUniswapV2Pair.sol

// SPDX-License-Identifier: GPL-3.0-or-later

pragma solidity 0.8.10;

interface IUniswapV3Pool {
  function token0() external returns (address);
  function token1() external returns (address);

  function swap(
    address recipient,
    bool zeroForOne,
    int256 amountSpecified,
    uint160 sqrtPriceLimitX96,
    bytes calldata data
  ) external returns (int256 amount0, int256 amount1);
}


interfaces/IUniswapV3Pool.sol

// SPDX-License-Identifier: UNLICENSED

pragma solidity 0.8.10;

import '../interfaces/IUniswapV2Pair.sol';
import '../interfaces/IUniswapV3Pool.sol';
import '../interfaces/ITridentCLPool.sol';
import '../interfaces/IBentoBoxMinimal.sol';
import '../interfaces/IPool.sol';
import '../interfaces/IWETH.sol';
import './InputStream.sol';
import '@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol';
import "@openzeppelin/contracts/access/Ownable.sol";

address constant NATIVE_ADDRESS = 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE;
address constant IMPOSSIBLE_POOL_ADDRESS = 0x0000000000000000000000000000000000000001;

/// @dev The minimum value that can be returned from #getSqrtRatioAtTick. Equivalent to getSqrtRatioAtTick(MIN_TICK)
uint160 constant MIN_SQRT_RATIO = 4295128739;
/// @dev The maximum value that can be returned from #getSqrtRatioAtTick. Equivalent to getSqrtRatioAtTick(MAX_TICK)
uint160 constant MAX_SQRT_RATIO = 1461446703485210103287273052203988822378723970342;

/// @title A route processor for the Sushi Aggregator
/// @author Ilya Lyalin
/// version 3.2
contract RouteProcessor3_2 is Ownable {
  using SafeERC20 for IERC20;
  using SafeERC20 for IERC20Permit;
  using InputStream for uint256;

  event Route(
    address indexed from, 
    address to, 
    address indexed tokenIn, 
    address indexed tokenOut, 
    uint amountIn, 
    uint amountOutMin,
    uint amountOut
  );

  IBentoBoxMinimal public immutable bentoBox;
  mapping (address => bool) priviledgedUsers;
  address private lastCalledPool;

  uint8 private unlocked = 1;
  uint8 private paused = 1;
  modifier lock() {
      require(unlocked == 1, 'RouteProcessor is locked');
      require(paused == 1, 'RouteProcessor is paused');
      unlocked = 2;
      _;
      unlocked = 1;
  }

  modifier onlyOwnerOrPriviledgedUser() {
    require(msg.sender == owner() || priviledgedUsers[msg.sender] == true, "RP: caller is not the owner or a priviledged user");
    _;
  }

  constructor(address _bentoBox, address[] memory priviledgedUserList) {
    bentoBox = IBentoBoxMinimal(_bentoBox);
    lastCalledPool = IMPOSSIBLE_POOL_ADDRESS;

    for (uint i = 0; i < priviledgedUserList.length; i++) {
      priviledgedUsers[priviledgedUserList[i]] = true;
    }
  }

  function setPriviledge(address user, bool priviledge) external onlyOwner {
    priviledgedUsers[user] = priviledge;
  }

  function pause() external onlyOwnerOrPriviledgedUser {
    paused = 2;
  }

  function resume() external onlyOwnerOrPriviledgedUser {
    paused = 1;
  }

  /// @notice For native unwrapping
  receive() external payable {}

  /// @notice Processes the route generated off-chain. Has a lock
  /// @param tokenIn Address of the input token
  /// @param amountIn Amount of the input token
  /// @param tokenOut Address of the output token
  /// @param amountOutMin Minimum amount of the output token
  /// @return amountOut Actual amount of the output token
  function processRoute(
    address tokenIn,
    uint256 amountIn,
    address tokenOut,
    uint256 amountOutMin,
    address to,
    bytes memory route
  ) external payable lock returns (uint256 amountOut) {
    return processRouteInternal(tokenIn, amountIn, tokenOut, amountOutMin, to, route);
  }

  /// @notice Transfers some value to <transferValueTo> and then processes the route
  /// @param transferValueTo Address where the value should be transferred
  /// @param amountValueTransfer How much value to transfer
  /// @param tokenIn Address of the input token
  /// @param amountIn Amount of the input token
  /// @param tokenOut Address of the output token
  /// @param amountOutMin Minimum amount of the output token
  /// @return amountOut Actual amount of the output token
  function transferValueAndprocessRoute(
    address payable transferValueTo,
    uint256 amountValueTransfer,
    address tokenIn,
    uint256 amountIn,
    address tokenOut,
    uint256 amountOutMin,
    address to,
    bytes memory route
  ) external payable lock returns (uint256 amountOut) {
    (bool success, bytes memory returnBytes) = transferValueTo.call{value: amountValueTransfer}('');
    require(success, string(abi.encodePacked(returnBytes)));
    return processRouteInternal(tokenIn, amountIn, tokenOut, amountOutMin, to, route);
  }

  /// @notice Processes the route generated off-chain
  /// @param tokenIn Address of the input token
  /// @param amountIn Amount of the input token
  /// @param tokenOut Address of the output token
  /// @param amountOutMin Minimum amount of the output token
  /// @return amountOut Actual amount of the output token
  function processRouteInternal(
    address tokenIn,
    uint256 amountIn,
    address tokenOut,
    uint256 amountOutMin,
    address to,
    bytes memory route
  ) private returns (uint256 amountOut) {
    uint256 balanceInInitial = tokenIn == NATIVE_ADDRESS ? address(this).balance : IERC20(tokenIn).balanceOf(msg.sender);
    uint256 balanceOutInitial = tokenOut == NATIVE_ADDRESS ? address(to).balance : IERC20(tokenOut).balanceOf(to);

    uint256 stream = InputStream.createStream(route);
    while (stream.isNotEmpty()) {
      uint8 commandCode = stream.readUint8();
      if (commandCode == 1) processMyERC20(stream);
      else if (commandCode == 2) processUserERC20(stream, amountIn);
      else if (commandCode == 3) processNative(stream);
      else if (commandCode == 4) processOnePool(stream);
      else if (commandCode == 5) processInsideBento(stream);
      else if (commandCode == 6) applyPermit(tokenIn, stream);
      else revert('RouteProcessor: Unknown command code');
    }

    uint256 balanceInFinal = tokenIn == NATIVE_ADDRESS ? address(this).balance : IERC20(tokenIn).balanceOf(msg.sender);
    require(balanceInFinal + amountIn >= balanceInInitial, 'RouteProcessor: Minimal imput balance violation');

    uint256 balanceOutFinal = tokenOut == NATIVE_ADDRESS ? address(to).balance : IERC20(tokenOut).balanceOf(to);
    require(balanceOutFinal >= balanceOutInitial + amountOutMin, 'RouteProcessor: Minimal ouput balance violation');

    amountOut = balanceOutFinal - balanceOutInitial;

    emit Route(msg.sender, to, tokenIn, tokenOut, amountIn, amountOutMin, amountOut);
  }

  function applyPermit(address tokenIn, uint256 stream) private {
    //address owner, address spender, uint value, uint deadline, uint8 v, bytes32 r, bytes32 s)
    uint256 value = stream.readUint();
    uint256 deadline = stream.readUint();
    uint8 v = stream.readUint8();
    bytes32 r = stream.readBytes32();
    bytes32 s = stream.readBytes32();
    IERC20Permit(tokenIn).safePermit(msg.sender, address(this), value, deadline, v, r, s);
  }

  /// @notice Processes native coin: call swap for all pools that swap from native coin
  /// @param stream Streamed process program
  function processNative(uint256 stream) private {
    uint256 amountTotal = address(this).balance;
    distributeAndSwap(stream, address(this), NATIVE_ADDRESS, amountTotal);
  }

  /// @notice Processes ERC20 token from this contract balance:
  /// @notice Call swap for all pools that swap from this token
  /// @param stream Streamed process program
  function processMyERC20(uint256 stream) private {
    address token = stream.readAddress();
    uint256 amountTotal = IERC20(token).balanceOf(address(this));
    unchecked {
      if (amountTotal > 0) amountTotal -= 1;     // slot undrain protection
    }
    distributeAndSwap(stream, address(this), token, amountTotal);
  }
  
  /// @notice Processes ERC20 token from msg.sender balance:
  /// @notice Call swap for all pools that swap from this token
  /// @param stream Streamed process program
  /// @param amountTotal Amount of tokens to take from msg.sender
  function processUserERC20(uint256 stream, uint256 amountTotal) private {
    address token = stream.readAddress();
    distributeAndSwap(stream, msg.sender, token, amountTotal);
  }

  /// @notice Distributes amountTotal to several pools according to their shares and calls swap for each pool
  /// @param stream Streamed process program
  /// @param from Where to take liquidity for swap
  /// @param tokenIn Input token
  /// @param amountTotal Total amount of tokenIn for swaps 
  function distributeAndSwap(uint256 stream, address from, address tokenIn, uint256 amountTotal) private {
    uint8 num = stream.readUint8();
    unchecked {
      for (uint256 i = 0; i < num; ++i) {
        uint16 share = stream.readUint16();
        uint256 amount = (amountTotal * share) / 65535;
        amountTotal -= amount;
        swap(stream, from, tokenIn, amount);
      }
    }
  }

  /// @notice Processes ERC20 token for cases when the token has only one output pool
  /// @notice In this case liquidity is already at pool balance. This is an optimization
  /// @notice Call swap for all pools that swap from this token
  /// @param stream Streamed process program
  function processOnePool(uint256 stream) private {
    address token = stream.readAddress();
    swap(stream, address(this), token, 0);
  }

  /// @notice Processes Bento tokens 
  /// @notice Call swap for all pools that swap from this token
  /// @param stream Streamed process program
  function processInsideBento(uint256 stream) private {
    address token = stream.readAddress();
    uint8 num = stream.readUint8();

    uint256 amountTotal = bentoBox.balanceOf(token, address(this));
    unchecked {
      if (amountTotal > 0) amountTotal -= 1;     // slot undrain protection
      for (uint256 i = 0; i < num; ++i) {
        uint16 share = stream.readUint16();
        uint256 amount = (amountTotal * share) / 65535;
        amountTotal -= amount;
        swap(stream, address(this), token, amount);
      }
    }
  }

  /// @notice Makes swap
  /// @param stream Streamed process program
  /// @param from Where to take liquidity for swap
  /// @param tokenIn Input token
  /// @param amountIn Amount of tokenIn to take for swap
  function swap(uint256 stream, address from, address tokenIn, uint256 amountIn) private {
    uint8 poolType = stream.readUint8();
    if (poolType == 0) swapUniV2(stream, from, tokenIn, amountIn);
    else if (poolType == 1) swapUniV3(stream, from, tokenIn, amountIn);
    else if (poolType == 2) wrapNative(stream, from, tokenIn, amountIn);
    else if (poolType == 3) bentoBridge(stream, from, tokenIn, amountIn);
    else if (poolType == 4) swapTrident(stream, from, tokenIn, amountIn);
    else revert('RouteProcessor: Unknown pool type');
  }

  /// @notice Wraps/unwraps native token
  /// @param stream [direction & fake, recipient, wrapToken?]
  /// @param from Where to take liquidity for swap
  /// @param tokenIn Input token
  /// @param amountIn Amount of tokenIn to take for swap
  function wrapNative(uint256 stream, address from, address tokenIn, uint256 amountIn) private {
    uint8 directionAndFake = stream.readUint8();
    address to = stream.readAddress();

    if (directionAndFake & 1 == 1) {  // wrap native
      address wrapToken = stream.readAddress();
      if (directionAndFake & 2 == 0) IWETH(wrapToken).deposit{value: amountIn}();
      if (to != address(this)) IERC20(wrapToken).safeTransfer(to, amountIn);
    } else { // unwrap native
      if (directionAndFake & 2 == 0) {
        if (from != address(this)) IERC20(tokenIn).safeTransferFrom(from, address(this), amountIn);
        IWETH(tokenIn).withdraw(amountIn);
      }
      payable(to).transfer(address(this).balance);
    }
  }

  /// @notice Bridge/unbridge tokens to/from Bento
  /// @param stream [direction, recipient]
  /// @param from Where to take liquidity for swap
  /// @param tokenIn Input token
  /// @param amountIn Amount of tokenIn to take for swap
  function bentoBridge(uint256 stream, address from, address tokenIn, uint256 amountIn) private {
    uint8 direction = stream.readUint8();
    address to = stream.readAddress();

    if (direction > 0) {  // outside to Bento
      // deposit to arbitrary recipient is possible only from address(bentoBox)
      if (amountIn != 0) {
        if (from == address(this)) IERC20(tokenIn).safeTransfer(address(bentoBox), amountIn);
        else IERC20(tokenIn).safeTransferFrom(from, address(bentoBox), amountIn);
      } else {
        // tokens already are at address(bentoBox)
        amountIn = IERC20(tokenIn).balanceOf(address(bentoBox)) +
        bentoBox.strategyData(tokenIn).balance -
        bentoBox.totals(tokenIn).elastic;
      }
      bentoBox.deposit(tokenIn, address(bentoBox), to, amountIn, 0);
    } else { // Bento to outside
      if (amountIn > 0) {
        bentoBox.transfer(tokenIn, from, address(this), amountIn);
      } else amountIn = bentoBox.balanceOf(tokenIn, address(this));
      bentoBox.withdraw(tokenIn, address(this), to, 0, amountIn);
    }
  }

  /// @notice UniswapV2 pool swap
  /// @param stream [pool, direction, recipient]
  /// @param from Where to take liquidity for swap
  /// @param tokenIn Input token
  /// @param amountIn Amount of tokenIn to take for swap
  function swapUniV2(uint256 stream, address from, address tokenIn, uint256 amountIn) private {
    address pool = stream.readAddress();
    uint8 direction = stream.readUint8();
    address to = stream.readAddress();

    if (amountIn != 0) {
      if (from == address(this)) IERC20(tokenIn).safeTransfer(pool, amountIn);
      else IERC20(tokenIn).safeTransferFrom(from, pool, amountIn);
    }

    (uint256 r0, uint256 r1, ) = IUniswapV2Pair(pool).getReserves();
    require(r0 > 0 && r1 > 0, 'Wrong pool reserves');
    (uint256 reserveIn, uint256 reserveOut) = direction == 1 ? (r0, r1) : (r1, r0);
    amountIn = IERC20(tokenIn).balanceOf(pool) - reserveIn;  // tokens already were transferred

    uint256 amountInWithFee = amountIn * 997;
    uint256 amountOut = (amountInWithFee * reserveOut) / (reserveIn * 1000 + amountInWithFee);
    (uint256 amount0Out, uint256 amount1Out) = direction == 1 ? (uint256(0), amountOut) : (amountOut, uint256(0));
    IUniswapV2Pair(pool).swap(amount0Out, amount1Out, to, new bytes(0));
  }

  /// @notice Trident pool swap
  /// @param stream [pool, swapData]
  /// @param from Where to take liquidity for swap
  /// @param tokenIn Input token
  /// @param amountIn Amount of tokenIn to take for swap
  function swapTrident(uint256 stream, address from, address tokenIn, uint256 amountIn) private {
    address pool = stream.readAddress();
    bytes memory swapData = stream.readBytes();

    if (amountIn != 0) {
      bentoBox.transfer(tokenIn, from, pool, amountIn);
    }
    
    IPool(pool).swap(swapData);
  }

  /// @notice UniswapV3 pool swap
  /// @param stream [pool, direction, recipient]
  /// @param from Where to take liquidity for swap
  /// @param tokenIn Input token
  /// @param amountIn Amount of tokenIn to take for swap
  function swapUniV3(uint256 stream, address from, address tokenIn, uint256 amountIn) private {
    address pool = stream.readAddress();
    bool zeroForOne = stream.readUint8() > 0;
    address recipient = stream.readAddress();

    if (from != address(this)) {
      require(from == msg.sender, 'swapUniV3: unexpected from address');
      IERC20(tokenIn).safeTransferFrom(msg.sender, address(this), uint256(amountIn));
    }

    lastCalledPool = pool;
    IUniswapV3Pool(pool).swap(
      recipient,
      zeroForOne,
      int256(amountIn),
      zeroForOne ? MIN_SQRT_RATIO + 1 : MAX_SQRT_RATIO - 1,
      abi.encode(tokenIn)
    );
    require(lastCalledPool == IMPOSSIBLE_POOL_ADDRESS, 'RouteProcessor.swapUniV3: unexpected'); // Just to be sure
  }

  /// @notice Called to `msg.sender` after executing a swap via IUniswapV3Pool#swap.
  /// @dev In the implementation you must pay the pool tokens owed for the swap.
  /// The caller of this method must be checked to be a UniswapV3Pool deployed by the canonical UniswapV3Factory.
  /// amount0Delta and amount1Delta can both be 0 if no tokens were swapped.
  /// @param amount0Delta The amount of token0 that was sent (negative) or must be received (positive) by the pool by
  /// the end of the swap. If positive, the callback must send that amount of token0 to the pool.
  /// @param amount1Delta The amount of token1 that was sent (negative) or must be received (positive) by the pool by
  /// the end of the swap. If positive, the callback must send that amount of token1 to the pool.
  /// @param data Any data passed through by the caller via the IUniswapV3PoolActions#swap call
  function uniswapV3SwapCallback(
    int256 amount0Delta,
    int256 amount1Delta,
    bytes calldata data
  ) external {
    require(msg.sender == lastCalledPool, 'RouteProcessor.uniswapV3SwapCallback: call from unknown source');
    lastCalledPool = IMPOSSIBLE_POOL_ADDRESS;
    (address tokenIn) = abi.decode(data, (address));
    int256 amount = amount0Delta > 0 ? amount0Delta : amount1Delta;
    require(amount > 0, 'RouteProcessor.uniswapV3SwapCallback: not positive amount');

    // Normally, RouteProcessor shouldn't have any liquidity on board
    // If some liquidity exists, it is sweept by the next user that makes swap through these tokens
    IERC20(tokenIn).safeTransfer(msg.sender, uint256(amount));
  }

}


contracts/RouteProcessor3_2.sol

// SPDX-License-Identifier: UNLICENSED

pragma solidity >=0.8.0;

struct Rebase {
    uint128 elastic;
    uint128 base;
}

struct StrategyData {
    uint64 strategyStartDate;
    uint64 targetPercentage;
    uint128 balance; // the balance of the strategy that BentoBox thinks is in there
}

/// @notice A rebasing library
library RebaseLibrary {
    /// @notice Calculates the base value in relationship to `elastic` and `total`.
    function toBase(Rebase memory total, uint256 elastic) internal pure returns (uint256 base) {
        if (total.elastic == 0) {
            base = elastic;
        } else {
            base = (elastic * total.base) / total.elastic;
        }
    }

    /// @notice Calculates the elastic value in relationship to `base` and `total`.
    function toElastic(Rebase memory total, uint256 base) internal pure returns (uint256 elastic) {
        if (total.base == 0) {
            elastic = base;
        } else {
            elastic = (base * total.elastic) / total.base;
        }
    }
}

/// @notice Minimal BentoBox vault interface.
/// @dev `token` is aliased as `address` from `IERC20` for simplicity.
interface IBentoBoxMinimal {
    /// @notice Balance per ERC-20 token per account in shares.
    function balanceOf(address, address) external view returns (uint256);

    /// @dev Helper function to represent an `amount` of `token` in shares.
    /// @param token The ERC-20 token.
    /// @param amount The `token` amount.
    /// @param roundUp If the result `share` should be rounded up.
    /// @return share The token amount represented in shares.
    function toShare(
        address token,
        uint256 amount,
        bool roundUp
    ) external view returns (uint256 share);

    /// @dev Helper function to represent shares back into the `token` amount.
    /// @param token The ERC-20 token.
    /// @param share The amount of shares.
    /// @param roundUp If the result should be rounded up.
    /// @return amount The share amount back into native representation.
    function toAmount(
        address token,
        uint256 share,
        bool roundUp
    ) external view returns (uint256 amount);

    /// @notice Registers this contract so that users can approve it for BentoBox.
    function registerProtocol() external;

    /// @notice Deposit an amount of `token` represented in either `amount` or `share`.
    /// @param token The ERC-20 token to deposit.
    /// @param from which account to pull the tokens.
    /// @param to which account to push the tokens.
    /// @param amount Token amount in native representation to deposit.
    /// @param share Token amount represented in shares to deposit. Takes precedence over `amount`.
    /// @return amountOut The amount deposited.
    /// @return shareOut The deposited amount represented in shares.
    function deposit(
        address token,
        address from,
        address to,
        uint256 amount,
        uint256 share
    ) external payable returns (uint256 amountOut, uint256 shareOut);

    /// @notice Withdraws an amount of `token` from a user account.
    /// @param token_ The ERC-20 token to withdraw.
    /// @param from which user to pull the tokens.
    /// @param to which user to push the tokens.
    /// @param amount of tokens. Either one of `amount` or `share` needs to be supplied.
    /// @param share Like above, but `share` takes precedence over `amount`.
    function withdraw(
        address token_,
        address from,
        address to,
        uint256 amount,
        uint256 share
    ) external returns (uint256 amountOut, uint256 shareOut);

    /// @notice Transfer shares from a user account to another one.
    /// @param token The ERC-20 token to transfer.
    /// @param from which user to pull the tokens.
    /// @param to which user to push the tokens.
    /// @param share The amount of `token` in shares.
    function transfer(
        address token,
        address from,
        address to,
        uint256 share
    ) external;

    /// @dev Reads the Rebase `totals`from storage for a given token
    function totals(address token) external view returns (Rebase memory total);

    function strategyData(address token) external view returns (StrategyData memory total);

    /// @dev Approves users' BentoBox assets to a "master" contract.
    function setMasterContractApproval(
        address user,
        address masterContract,
        bool approved,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) external;

    function harvest(
        address token,
        bool balance,
        uint256 maxChangeAmount
    ) external;
}


interfaces/IBentoBoxMinimal.sol

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.8.0) (utils/Address.sol)

pragma solidity ^0.8.1;

/**
 * @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
     * ====
     *
     * [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://diligence.consensys.net/posts/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/v0.5.11/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/utils/Address.sol

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/Context.sol)

pragma solidity ^0.8.0;

/**
 * @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;
    }
}


@openzeppelin/contracts/utils/Context.sol

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.0) (access/Ownable.sol)

pragma solidity ^0.8.0;

import "../utils/Context.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 anymore. Can only be called by the current owner.
     *
     * NOTE: Renouncing ownership will leave the contract without an owner,
     * thereby removing 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/access/Ownable.sol

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.6.0) (token/ERC20/IERC20.sol)

pragma solidity ^0.8.0;

/**
 * @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/token/ERC20/IERC20.sol

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.8.0) (token/ERC20/utils/SafeERC20.sol)

pragma solidity ^0.8.0;

import "../IERC20.sol";
import "../extensions/draft-IERC20Permit.sol";
import "../../../utils/Address.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;

    function safeTransfer(
        IERC20 token,
        address to,
        uint256 value
    ) internal {
        _callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value));
    }

    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));
    }

    function safeIncreaseAllowance(
        IERC20 token,
        address spender,
        uint256 value
    ) internal {
        uint256 newAllowance = token.allowance(address(this), spender) + value;
        _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
    }

    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");
            uint256 newAllowance = oldAllowance - value;
            _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
        }
    }

    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");
        if (returndata.length > 0) {
            // Return data is optional
            require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed");
        }
    }
}


@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC20/extensions/draft-IERC20Permit.sol)

pragma solidity ^0.8.0;

/**
 * @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);
}


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