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// SPDX-License-Identifier: GPL-2.0-or-later
pragma solidity 0.8.9;
pragma abicoder v2;

import {AntiSnipAttack} from '../periphery/libraries/AntiSnipAttack.sol';
import {SafeCast} from '../libraries/SafeCast.sol';

import './BasePositionManager.sol';

contract AntiSnipAttackPositionManager is BasePositionManager {
  using SafeCast for uint256;
  mapping(uint256 => AntiSnipAttack.Data) public antiSnipAttackData;

  constructor(
    address _factory,
    address _WETH,
    address _descriptor
  ) BasePositionManager(_factory, _WETH, _descriptor) {}

  function mint(MintParams calldata params)
    public
    payable
    override
    returns (
      uint256 tokenId,
      uint128 liquidity,
      uint256 amount0,
      uint256 amount1
    )
  {
    (tokenId, liquidity, amount0, amount1) = super.mint(params);
    antiSnipAttackData[tokenId] = AntiSnipAttack.initialize(block.timestamp.toUint32());
  }

  function addLiquidity(IncreaseLiquidityParams calldata params)
    external
    payable
    override
    onlyNotExpired(params.deadline)
    returns (
      uint128 liquidity,
      uint256 amount0,
      uint256 amount1,
      uint256 additionalRTokenOwed
    )
  {
    Position storage pos = _positions[params.tokenId];
    PoolInfo memory poolInfo = _poolInfoById[pos.poolId];
    IPool pool;
    uint256 feeGrowthInsideLast;

    int24[2] memory ticksPrevious;
    (liquidity, amount0, amount1, feeGrowthInsideLast, pool) = _addLiquidity(
      AddLiquidityParams({
        token0: poolInfo.token0,
        token1: poolInfo.token1,
        fee: poolInfo.fee,
        recipient: address(this),
        tickLower: pos.tickLower,
        tickUpper: pos.tickUpper,
        ticksPrevious: ticksPrevious,
        amount0Desired: params.amount0Desired,
        amount1Desired: params.amount1Desired,
        amount0Min: params.amount0Min,
        amount1Min: params.amount1Min
      })
    );

    uint128 tmpLiquidity = pos.liquidity;

    if (feeGrowthInsideLast != pos.feeGrowthInsideLast) {
      uint256 feeGrowthInsideDiff;
      unchecked {
        feeGrowthInsideDiff = feeGrowthInsideLast - pos.feeGrowthInsideLast;
      }
      // zero fees burnable when adding liquidity
      (additionalRTokenOwed, ) = AntiSnipAttack.update(
        antiSnipAttackData[params.tokenId],
        tmpLiquidity,
        liquidity,
        block.timestamp.toUint32(),
        true,
        FullMath.mulDivFloor(tmpLiquidity, feeGrowthInsideDiff, C.TWO_POW_96),
        IFactory(factory).vestingPeriod()
      );
      pos.rTokenOwed += additionalRTokenOwed;
      pos.feeGrowthInsideLast = feeGrowthInsideLast;
    }

    pos.liquidity += liquidity;

    emit AddLiquidity(params.tokenId, liquidity, amount0, amount1, additionalRTokenOwed);
  }

  function removeLiquidity(RemoveLiquidityParams calldata params)
    external
    override
    isAuthorizedForToken(params.tokenId)
    onlyNotExpired(params.deadline)
    returns (
      uint256 amount0,
      uint256 amount1,
      uint256 additionalRTokenOwed
    )
  {
    Position storage pos = _positions[params.tokenId];
    uint128 tmpLiquidity = pos.liquidity;
    require(tmpLiquidity >= params.liquidity, 'Insufficient liquidity');

    PoolInfo memory poolInfo = _poolInfoById[pos.poolId];
    IPool pool = _getPool(poolInfo.token0, poolInfo.token1, poolInfo.fee);

    uint256 feeGrowthInsideLast;
    (amount0, amount1, feeGrowthInsideLast) = pool.burn(
      pos.tickLower,
      pos.tickUpper,
      params.liquidity
    );
    require(amount0 >= params.amount0Min && amount1 >= params.amount1Min, 'Low return amounts');

    // call update() function regardless of fee growth difference
    // to calculate burnable fees
    uint256 feesBurnable;
    uint256 feeGrowthInsideDiff;
    unchecked {
      feeGrowthInsideDiff = feeGrowthInsideLast - pos.feeGrowthInsideLast;
    }
    (additionalRTokenOwed, feesBurnable) = AntiSnipAttack.update(
      antiSnipAttackData[params.tokenId],
      tmpLiquidity,
      params.liquidity,
      block.timestamp.toUint32(),
      false,
      FullMath.mulDivFloor(tmpLiquidity, feeGrowthInsideDiff, C.TWO_POW_96),
      IFactory(factory).vestingPeriod()
    );
    pos.rTokenOwed += additionalRTokenOwed;
    pos.feeGrowthInsideLast = feeGrowthInsideLast;
    if (feesBurnable > 0) pool.burnRTokens(feesBurnable, true);

    pos.liquidity = tmpLiquidity - params.liquidity;

    emit RemoveLiquidity(params.tokenId, params.liquidity, amount0, amount1, additionalRTokenOwed);
  }
}

// SPDX-License-Identifier: agpl-3.0
pragma solidity 0.8.9;

import {Math} from '@openzeppelin/contracts/utils/math/Math.sol';

import {MathConstants as C} from '../../libraries/MathConstants.sol';
import {SafeCast} from '../../libraries/SafeCast.sol';

/// @title AntiSnipAttack
/// @notice Contains the snipping attack mechanism implementation
/// to be inherited by NFT position manager
library AntiSnipAttack {
  using SafeCast for uint256;
  using SafeCast for int256;
  using SafeCast for int128;

  struct Data {
    // timestamp of last action performed
    uint32 lastActionTime;
    // average start time of lock schedule
    uint32 lockTime;
    // average unlock time of locked fees
    uint32 unlockTime;
    // locked rToken qty since last update
    uint256 feesLocked;
  }

  /// @notice Initializes values for a new position
  /// @return data Initialized snip attack data structure
  function initialize(uint32 currentTime) internal pure returns (Data memory data) {
    data.lastActionTime = currentTime;
    data.lockTime = currentTime;
    data.unlockTime = currentTime;
    data.feesLocked = 0;
  }

  /// @notice Credits accumulated fees to a user's existing position
  /// @dev The posiition should already have been initialized
  /// @param self The individual position to update
  /// @param liquidityDelta The change in pool liquidity as a result of the position update
  /// this value should not be zero when called
  /// @param isAddLiquidity true = add liquidity, false = remove liquidity
  /// @param feesSinceLastAction rTokens collected by position since last action performed
  /// in fee growth inside the tick range
  /// @param vestingPeriod The maximum time duration for which LP fees
  /// are proportionally burnt upon LP removals
  /// @return feesClaimable The claimable rToken amount to be sent to the user
  /// @return feesBurnable The rToken amount to be burnt
  function update(
    Data storage self,
    uint128 currentLiquidity,
    uint128 liquidityDelta,
    uint32 currentTime,
    bool isAddLiquidity,
    uint256 feesSinceLastAction,
    uint256 vestingPeriod
  ) internal returns (uint256 feesClaimable, uint256 feesBurnable) {
    Data memory _self = self;
    if (vestingPeriod == 0) {
      // no locked fees, return
      if (_self.feesLocked == 0) return (feesSinceLastAction, 0);
      // unlock any locked fees
      self.feesLocked = 0;
      return (_self.feesLocked + feesSinceLastAction, 0);
    }

    // scoping of fee proportions to avoid stack too deep
    {
      // claimable proportion (in basis pts) of collected fees between last action and now
      // lockTime is used instead of lastActionTime because we prefer to use the entire
      // duration of the position as the measure, not just the duration after last action performed
      uint256 feesClaimableSinceLastActionFeeUnits = Math.min(
        C.FEE_UNITS,
        (uint256(currentTime - _self.lockTime) * C.FEE_UNITS) / vestingPeriod
      );
      // claimable proportion (in basis pts) of locked fees
      // lastActionTime is used instead of lockTime since the vested fees
      // from lockTime to lastActionTime have already been claimed
      uint256 feesClaimableVestedFeeUnits = _self.unlockTime <= _self.lastActionTime
        ? C.FEE_UNITS
        : Math.min(
          C.FEE_UNITS,
          (uint256(currentTime - _self.lastActionTime) * C.FEE_UNITS) /
            (_self.unlockTime - _self.lastActionTime)
        );

      uint256 feesLockedBeforeUpdate = _self.feesLocked;
      (_self.feesLocked, feesClaimable) = calcFeeProportions(
        _self.feesLocked,
        feesSinceLastAction,
        feesClaimableVestedFeeUnits,
        feesClaimableSinceLastActionFeeUnits
      );

      // update unlock time
      // the new lock fee qty contains 2 portions:
      // (1) new lock fee qty from last action to now
      // (2) remaining lock fee qty prior to last action performed
      // new unlock time = proportionally weighted unlock times of the 2 portions
      // (1)'s unlock time = currentTime + vestingPeriod
      // (2)'s unlock time = current unlock time
      // If (1) and (2) are 0, then update to block.timestamp
      self.unlockTime = (_self.feesLocked == 0)
        ? currentTime
        : (((_self.lockTime + vestingPeriod) *
          feesSinceLastAction *
          (C.FEE_UNITS - feesClaimableSinceLastActionFeeUnits) +
          _self.unlockTime *
          feesLockedBeforeUpdate *
          (C.FEE_UNITS - feesClaimableVestedFeeUnits)) / (_self.feesLocked * C.FEE_UNITS))
        .toUint32();
    }

    uint256 updatedLiquidity = isAddLiquidity
      ? currentLiquidity + liquidityDelta
      : currentLiquidity - liquidityDelta;

    // adding liquidity: update average start time
    // removing liquidity: calculate and burn portion of locked fees
    if (isAddLiquidity) {
      self.lockTime = Math
      .ceilDiv(
        Math.max(_self.lockTime, currentTime - vestingPeriod) *
          uint256(currentLiquidity) +
          uint256(uint128(liquidityDelta)) *
          currentTime,
        updatedLiquidity
      ).toUint32();
    } else if (_self.feesLocked > 0) {
      feesBurnable = (_self.feesLocked * liquidityDelta) / uint256(currentLiquidity);
      _self.feesLocked -= feesBurnable;
    }

    // update other variables
    self.feesLocked = _self.feesLocked;
    self.lastActionTime = currentTime;
  }

  function calcFeeProportions(
    uint256 currentFees,
    uint256 nextFees,
    uint256 currentClaimableFeeUnits,
    uint256 nextClaimableFeeUnits
  ) internal pure returns (uint256 feesLockedNew, uint256 feesClaimable) {
    uint256 totalFees = currentFees + nextFees;
    feesClaimable =
      (currentClaimableFeeUnits * currentFees + nextClaimableFeeUnits * nextFees) /
      C.FEE_UNITS;
    feesLockedNew = totalFees - feesClaimable;
  }
}

// SPDX-License-Identifier: GPL-2.0-or-later
pragma solidity >=0.8.0;

/// @title Safe casting methods
/// @notice Contains methods for safely casting between types
library SafeCast {
  /// @notice Cast a uint256 to uint32, revert on overflow
  /// @param y The uint256 to be downcasted
  /// @return z The downcasted integer, now type uint32
  function toUint32(uint256 y) internal pure returns (uint32 z) {
    require((z = uint32(y)) == y);
  }

  /// @notice Cast a uint128 to a int128, revert on overflow
  /// @param y The uint256 to be casted
  /// @return z The casted integer, now type int256
  function toInt128(uint128 y) internal pure returns (int128 z) {
    require(y < 2**127);
    z = int128(y);
  }

  /// @notice Cast a uint256 to a uint128, revert on overflow
  /// @param y the uint256 to be downcasted
  /// @return z The downcasted integer, now type uint128
  function toUint128(uint256 y) internal pure returns (uint128 z) {
    require((z = uint128(y)) == y);
  }

  /// @notice Cast a int128 to a uint128 and reverses the sign.
  /// @param y The int128 to be casted
  /// @return z = -y, now type uint128
  function revToUint128(int128 y) internal pure returns (uint128 z) {
    unchecked {
      return type(uint128).max - uint128(y) + 1;
    }
  }

  /// @notice Cast a uint256 to a uint160, revert on overflow
  /// @param y The uint256 to be downcasted
  /// @return z The downcasted integer, now type uint160
  function toUint160(uint256 y) internal pure returns (uint160 z) {
    require((z = uint160(y)) == y);
  }

  /// @notice Cast a uint256 to a int256, revert on overflow
  /// @param y The uint256 to be casted
  /// @return z The casted integer, now type int256
  function toInt256(uint256 y) internal pure returns (int256 z) {
    require(y < 2**255);
    z = int256(y);
  }

  /// @notice Cast a uint256 to a int256 and reverses the sign, revert on overflow
  /// @param y The uint256 to be casted
  /// @return z = -y, now type int256
  function revToInt256(uint256 y) internal pure returns (int256 z) {
    require(y < 2**255);
    z = -int256(y);
  }

  /// @notice Cast a int256 to a uint256 and reverses the sign.
  /// @param y The int256 to be casted
  /// @return z = -y, now type uint256
  function revToUint256(int256 y) internal pure returns (uint256 z) {
    unchecked {
      return type(uint256).max - uint256(y) + 1;
    }
  }
}

// SPDX-License-Identifier: GPL-2.0-or-later
pragma solidity 0.8.9;
pragma abicoder v2;

import {IERC20} from '@openzeppelin/contracts/token/ERC20/IERC20.sol';
import {IERC721} from '@openzeppelin/contracts/token/ERC721/IERC721.sol';

import {PoolAddress} from './libraries/PoolAddress.sol';
import {MathConstants as C} from '../libraries/MathConstants.sol';
import {FullMath} from '../libraries/FullMath.sol';
import {QtyDeltaMath} from '../libraries/QtyDeltaMath.sol';

import {IPool} from '../interfaces/IPool.sol';
import {IFactory} from '../interfaces/IFactory.sol';
import {IBasePositionManager} from '../interfaces/periphery/IBasePositionManager.sol';
import {INonfungibleTokenPositionDescriptor} from '../interfaces/periphery/INonfungibleTokenPositionDescriptor.sol';
import {IRouterTokenHelper} from '../interfaces/periphery/IRouterTokenHelper.sol';

import {LiquidityHelper} from './base/LiquidityHelper.sol';
import {RouterTokenHelper} from './base/RouterTokenHelper.sol';
import {Multicall} from './base/Multicall.sol';
import {DeadlineValidation} from './base/DeadlineValidation.sol';
import {ERC721Permit} from './base/ERC721Permit.sol';

contract BasePositionManager is
  IBasePositionManager,
  Multicall,
  ERC721Permit('KyberSwap v2 NFT Positions Manager', 'KS2-NPM', '1'),
  LiquidityHelper
{
  address internal immutable _tokenDescriptor;
  uint80 public override nextPoolId = 1;
  uint256 public override nextTokenId = 1;
  // pool id => pool info
  mapping(uint80 => PoolInfo) internal _poolInfoById;
  // tokenId => position
  mapping(uint256 => Position) internal _positions;

  mapping(address => bool) public override isRToken;
  // pool address => pool id
  mapping(address => uint80) public override addressToPoolId;

  modifier isAuthorizedForToken(uint256 tokenId) {
    require(_isApprovedOrOwner(msg.sender, tokenId), 'Not approved');
    _;
  }

  constructor(
    address _factory,
    address _WETH,
    address _descriptor
  ) LiquidityHelper(_factory, _WETH) {
    _tokenDescriptor = _descriptor;
  }

  function createAndUnlockPoolIfNecessary(
    address token0,
    address token1,
    uint24 fee,
    uint160 currentSqrtP
  ) external payable override returns (address pool) {
    require(token0 < token1);
    pool = IFactory(factory).getPool(token0, token1, fee);

    if (pool == address(0)) {
      pool = IFactory(factory).createPool(token0, token1, fee);
    }

    (uint160 sqrtP, , , ) = IPool(pool).getPoolState();
    if (sqrtP == 0) {
      (uint256 qty0, uint256 qty1) = QtyDeltaMath.calcUnlockQtys(currentSqrtP);
      _transferTokens(token0, msg.sender, pool, qty0);
      _transferTokens(token1, msg.sender, pool, qty1);
      IPool(pool).unlockPool(currentSqrtP);
    }
  }

  function mint(MintParams calldata params)
    public
    payable
    virtual
    override
    onlyNotExpired(params.deadline)
    returns (
      uint256 tokenId,
      uint128 liquidity,
      uint256 amount0,
      uint256 amount1
    )
  {
    IPool pool;
    uint256 feeGrowthInsideLast;

    (liquidity, amount0, amount1, feeGrowthInsideLast, pool) = _addLiquidity(
      AddLiquidityParams({
        token0: params.token0,
        token1: params.token1,
        fee: params.fee,
        recipient: address(this),
        tickLower: params.tickLower,
        tickUpper: params.tickUpper,
        ticksPrevious: params.ticksPrevious,
        amount0Desired: params.amount0Desired,
        amount1Desired: params.amount1Desired,
        amount0Min: params.amount0Min,
        amount1Min: params.amount1Min
      })
    );

    tokenId = nextTokenId++;
    _mint(params.recipient, tokenId);

    uint80 poolId = _storePoolInfo(address(pool), params.token0, params.token1, params.fee);

    _positions[tokenId] = Position({
      nonce: 0,
      operator: address(0),
      poolId: poolId,
      tickLower: params.tickLower,
      tickUpper: params.tickUpper,
      liquidity: liquidity,
      rTokenOwed: 0,
      feeGrowthInsideLast: feeGrowthInsideLast
    });

    emit MintPosition(tokenId, poolId, liquidity, amount0, amount1);
  }

  function addLiquidity(IncreaseLiquidityParams calldata params)
    external
    payable
    virtual
    override
    onlyNotExpired(params.deadline)
    returns (
      uint128 liquidity,
      uint256 amount0,
      uint256 amount1,
      uint256 additionalRTokenOwed
    )
  {
    Position storage pos = _positions[params.tokenId];
    PoolInfo memory poolInfo = _poolInfoById[pos.poolId];
    IPool pool;
    uint256 feeGrowthInsideLast;

    int24[2] memory ticksPrevious;
    (liquidity, amount0, amount1, feeGrowthInsideLast, pool) = _addLiquidity(
      AddLiquidityParams({
        token0: poolInfo.token0,
        token1: poolInfo.token1,
        fee: poolInfo.fee,
        recipient: address(this),
        tickLower: pos.tickLower,
        tickUpper: pos.tickUpper,
        ticksPrevious: ticksPrevious,
        amount0Desired: params.amount0Desired,
        amount1Desired: params.amount1Desired,
        amount0Min: params.amount0Min,
        amount1Min: params.amount1Min
      })
    );

    uint128 tmpLiquidity = pos.liquidity;
    uint256 tmpFeeGrowthInsideLast = pos.feeGrowthInsideLast;

    if (feeGrowthInsideLast != tmpFeeGrowthInsideLast) {
      uint256 feeGrowthInsideDiff;
      unchecked {
        feeGrowthInsideDiff = feeGrowthInsideLast - tmpFeeGrowthInsideLast;
      }
      additionalRTokenOwed = FullMath.mulDivFloor(tmpLiquidity, feeGrowthInsideDiff, C.TWO_POW_96);
      pos.rTokenOwed += additionalRTokenOwed;
      pos.feeGrowthInsideLast = feeGrowthInsideLast;
    }

    pos.liquidity = tmpLiquidity + liquidity;

    emit AddLiquidity(params.tokenId, liquidity, amount0, amount1, additionalRTokenOwed);
  }

  function removeLiquidity(RemoveLiquidityParams calldata params)
    external
    virtual
    override
    isAuthorizedForToken(params.tokenId)
    onlyNotExpired(params.deadline)
    returns (
      uint256 amount0,
      uint256 amount1,
      uint256 additionalRTokenOwed
    )
  {
    Position storage pos = _positions[params.tokenId];
    uint128 tmpLiquidity = pos.liquidity;
    uint256 tmpFeeGrowthInsideLast = pos.feeGrowthInsideLast;
    require(tmpLiquidity >= params.liquidity, 'Insufficient liquidity');

    PoolInfo memory poolInfo = _poolInfoById[pos.poolId];
    IPool pool = _getPool(poolInfo.token0, poolInfo.token1, poolInfo.fee);

    uint256 feeGrowthInsideLast;
    (amount0, amount1, feeGrowthInsideLast) = pool.burn(
      pos.tickLower,
      pos.tickUpper,
      params.liquidity
    );
    require(amount0 >= params.amount0Min && amount1 >= params.amount1Min, 'Low return amounts');

    if (feeGrowthInsideLast != tmpFeeGrowthInsideLast) {
      uint256 feeGrowthInsideDiff;
      unchecked {
        feeGrowthInsideDiff = feeGrowthInsideLast - tmpFeeGrowthInsideLast;
      }
      additionalRTokenOwed = FullMath.mulDivFloor(tmpLiquidity, feeGrowthInsideDiff, C.TWO_POW_96);
      pos.rTokenOwed += additionalRTokenOwed;
      pos.feeGrowthInsideLast = feeGrowthInsideLast;
    }

    pos.liquidity = tmpLiquidity - params.liquidity;

    emit RemoveLiquidity(params.tokenId, params.liquidity, amount0, amount1, additionalRTokenOwed);
  }

  function burnRTokens(BurnRTokenParams calldata params)
    external
    override
    isAuthorizedForToken(params.tokenId)
    onlyNotExpired(params.deadline)
    returns (
      uint256 rTokenQty,
      uint256 amount0,
      uint256 amount1
    )
  {
    Position storage pos = _positions[params.tokenId];
    rTokenQty = pos.rTokenOwed;
    require(rTokenQty > 0, 'No rToken to burn');

    PoolInfo memory poolInfo = _poolInfoById[pos.poolId];
    IPool pool = _getPool(poolInfo.token0, poolInfo.token1, poolInfo.fee);

    pos.rTokenOwed = 0;
    (amount0, amount1) = pool.burnRTokens(rTokenQty, false);
    require(amount0 >= params.amount0Min && amount1 >= params.amount1Min, 'Low return amounts');
  }

  /**
   * @dev Burn the token by its owner
   * @notice All liquidity should be removed before burning
   */
  function burn(uint256 tokenId) external payable override isAuthorizedForToken(tokenId) {
    require(_positions[tokenId].liquidity == 0, 'Should remove liquidity first');
    require(_positions[tokenId].rTokenOwed == 0, 'Should burn rToken first');
    delete _positions[tokenId];
    _burn(tokenId);

    emit BurnPosition(tokenId);
  }

  function positions(uint256 tokenId)
    external
    view
    override
    returns (Position memory pos, PoolInfo memory info)
  {
    pos = _positions[tokenId];
    info = _poolInfoById[pos.poolId];
  }

  /**
   * @dev Override this function to not allow transferring rTokens
   * @notice it also means this PositionManager can not support LP of a rToken and another token
   */
  function transferAllTokens(
    address token,
    uint256 minAmount,
    address recipient
  ) public payable override(IRouterTokenHelper, RouterTokenHelper) {
    require(!isRToken[token], 'Can not transfer rToken');
    super.transferAllTokens(token, minAmount, recipient);
  }

  function tokenURI(uint256 tokenId) public view override returns (string memory) {
    require(_exists(tokenId), 'Nonexistent token');
    return INonfungibleTokenPositionDescriptor(_tokenDescriptor).tokenURI(this, tokenId);
  }

  function getApproved(uint256 tokenId) public view override returns (address) {
    require(_exists(tokenId), 'ERC721: approved query for nonexistent token');
    return _positions[tokenId].operator;
  }

  /**
   * @dev See {IERC165-supportsInterface}.
   */
  function supportsInterface(bytes4 interfaceId)
    public
    view
    virtual
    override(ERC721Permit, IBasePositionManager)
    returns (bool)
  {
    return
      interfaceId == type(ERC721Permit).interfaceId ||
      interfaceId == type(IBasePositionManager).interfaceId ||
      super.supportsInterface(interfaceId);
  }

  function _storePoolInfo(
    address pool,
    address token0,
    address token1,
    uint24 fee
  ) internal returns (uint80 poolId) {
    poolId = addressToPoolId[pool];
    if (poolId == 0) {
      addressToPoolId[pool] = (poolId = nextPoolId++);
      _poolInfoById[poolId] = PoolInfo({token0: token0, fee: fee, token1: token1});
      isRToken[pool] = true;
    }
  }

  /// @dev Overrides _approve to use the operator in the position, which is packed with the position permit nonce
  function _approve(address to, uint256 tokenId) internal override {
    _positions[tokenId].operator = to;
    emit Approval(ownerOf(tokenId), to, tokenId);
  }

  function _getAndIncrementNonce(uint256 tokenId) internal override returns (uint256) {
    return uint256(_positions[tokenId].nonce++);
  }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/**
 * @dev Standard math utilities missing in the Solidity language.
 */
library Math {
    /**
     * @dev Returns the largest of two numbers.
     */
    function max(uint256 a, uint256 b) internal pure returns (uint256) {
        return a >= b ? a : b;
    }

    /**
     * @dev Returns the smallest of two numbers.
     */
    function min(uint256 a, uint256 b) internal pure returns (uint256) {
        return a < b ? a : b;
    }

    /**
     * @dev Returns the average of two numbers. The result is rounded towards
     * zero.
     */
    function average(uint256 a, uint256 b) internal pure returns (uint256) {
        // (a + b) / 2 can overflow.
        return (a & b) + (a ^ b) / 2;
    }

    /**
     * @dev Returns the ceiling of the division of two numbers.
     *
     * This differs from standard division with `/` in that it rounds up instead
     * of rounding down.
     */
    function ceilDiv(uint256 a, uint256 b) internal pure returns (uint256) {
        // (a + b - 1) / b can overflow on addition, so we distribute.
        return a / b + (a % b == 0 ? 0 : 1);
    }
}

// SPDX-License-Identifier: agpl-3.0
pragma solidity >=0.8.0;

/// @title Contains constants needed for math libraries
library MathConstants {
  uint256 internal constant TWO_FEE_UNITS = 200_000;
  uint256 internal constant TWO_POW_96 = 2**96;
  uint128 internal constant MIN_LIQUIDITY = 100000;
  uint8 internal constant RES_96 = 96;
  uint24 internal constant BPS = 10000;
  uint24 internal constant FEE_UNITS = 100000;
  // it is strictly less than 5% price movement if jumping MAX_TICK_DISTANCE ticks
  int24 internal constant MAX_TICK_DISTANCE = 480;
  // max number of tick travel when inserting if data changes
  uint256 internal constant MAX_TICK_TRAVEL = 10;
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC20 standard as defined in the EIP.
 */
interface IERC20 {
    /**
     * @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 `recipient`.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transfer(address recipient, 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 `sender` to `recipient` 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 sender,
        address recipient,
        uint256 amount
    ) external returns (bool);

    /**
     * @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);
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "../../utils/introspection/IERC165.sol";

/**
 * @dev Required interface of an ERC721 compliant contract.
 */
interface IERC721 is IERC165 {
    /**
     * @dev Emitted when `tokenId` token is transferred from `from` to `to`.
     */
    event Transfer(address indexed from, address indexed to, uint256 indexed tokenId);

    /**
     * @dev Emitted when `owner` enables `approved` to manage the `tokenId` token.
     */
    event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId);

    /**
     * @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets.
     */
    event ApprovalForAll(address indexed owner, address indexed operator, bool approved);

    /**
     * @dev Returns the number of tokens in ``owner``'s account.
     */
    function balanceOf(address owner) external view returns (uint256 balance);

    /**
     * @dev Returns the owner of the `tokenId` token.
     *
     * Requirements:
     *
     * - `tokenId` must exist.
     */
    function ownerOf(uint256 tokenId) external view returns (address owner);

    /**
     * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients
     * are aware of the ERC721 protocol to prevent tokens from being forever locked.
     *
     * Requirements:
     *
     * - `from` cannot be the zero address.
     * - `to` cannot be the zero address.
     * - `tokenId` token must exist and be owned by `from`.
     * - If the caller is not `from`, it must be have been allowed to move this token by either {approve} or {setApprovalForAll}.
     * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
     *
     * Emits a {Transfer} event.
     */
    function safeTransferFrom(
        address from,
        address to,
        uint256 tokenId
    ) external;

    /**
     * @dev Transfers `tokenId` token from `from` to `to`.
     *
     * WARNING: Usage of this method is discouraged, use {safeTransferFrom} whenever possible.
     *
     * Requirements:
     *
     * - `from` cannot be the zero address.
     * - `to` cannot be the zero address.
     * - `tokenId` token must be owned by `from`.
     * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.
     *
     * Emits a {Transfer} event.
     */
    function transferFrom(
        address from,
        address to,
        uint256 tokenId
    ) external;

    /**
     * @dev Gives permission to `to` to transfer `tokenId` token to another account.
     * The approval is cleared when the token is transferred.
     *
     * Only a single account can be approved at a time, so approving the zero address clears previous approvals.
     *
     * Requirements:
     *
     * - The caller must own the token or be an approved operator.
     * - `tokenId` must exist.
     *
     * Emits an {Approval} event.
     */
    function approve(address to, uint256 tokenId) external;

    /**
     * @dev Returns the account approved for `tokenId` token.
     *
     * Requirements:
     *
     * - `tokenId` must exist.
     */
    function getApproved(uint256 tokenId) external view returns (address operator);

    /**
     * @dev Approve or remove `operator` as an operator for the caller.
     * Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller.
     *
     * Requirements:
     *
     * - The `operator` cannot be the caller.
     *
     * Emits an {ApprovalForAll} event.
     */
    function setApprovalForAll(address operator, bool _approved) external;

    /**
     * @dev Returns if the `operator` is allowed to manage all of the assets of `owner`.
     *
     * See {setApprovalForAll}
     */
    function isApprovedForAll(address owner, address operator) external view returns (bool);

    /**
     * @dev Safely transfers `tokenId` token from `from` to `to`.
     *
     * Requirements:
     *
     * - `from` cannot be the zero address.
     * - `to` cannot be the zero address.
     * - `tokenId` token must exist and be owned by `from`.
     * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.
     * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
     *
     * Emits a {Transfer} event.
     */
    function safeTransferFrom(
        address from,
        address to,
        uint256 tokenId,
        bytes calldata data
    ) external;
}

// SPDX-License-Identifier: GPL-2.0-or-later
pragma solidity 0.8.9;

/// @title Provides a function for deriving a pool address from the factory, tokens, and swap fee
library PoolAddress {
  /// @notice Deterministically computes the pool address from the given data
  /// @param factory the factory address
  /// @param token0 One of the tokens constituting the token pair, regardless of order
  /// @param token1 The other token constituting the token pair, regardless of order
  /// @param swapFee Fee to be collected upon every swap in the pool, in fee units
  /// @param poolInitHash The keccak256 hash of the Pool creation code
  /// @return pool the pool address
  function computeAddress(
    address factory,
    address token0,
    address token1,
    uint24 swapFee,
    bytes32 poolInitHash
  ) internal pure returns (address pool) {
    (token0, token1) = token0 < token1 ? (token0, token1) : (token1, token0);
    bytes32 hashed = keccak256(
      abi.encodePacked(
        hex'ff',
        factory,
        keccak256(abi.encode(token0, token1, swapFee)),
        poolInitHash
      )
    );
    pool = address(uint160(uint256(hashed)));
  }
}

// SPDX-License-Identifier: MIT
pragma solidity >=0.8.0;

/// @title Contains 512-bit math functions
/// @notice Facilitates multiplication and division that can have overflow of an intermediate value without any loss of precision
/// @dev Handles "phantom overflow" i.e., allows multiplication and division where an intermediate value overflows 256 bits
/// @dev Code has been modified to be compatible with sol 0.8
library FullMath {
  /// @notice Calculates floor(a×b÷denominator) with full precision. Throws if result overflows a uint256 or denominator == 0
  /// @param a The multiplicand
  /// @param b The multiplier
  /// @param denominator The divisor
  /// @return result The 256-bit result
  /// @dev Credit to Remco Bloemen under MIT license https://xn--2-umb.com/21/muldiv
  function mulDivFloor(
    uint256 a,
    uint256 b,
    uint256 denominator
  ) internal pure returns (uint256 result) {
    // 512-bit multiply [prod1 prod0] = a * b
    // Compute the product mod 2**256 and mod 2**256 - 1
    // then use the Chinese Remainder Theorem to reconstruct
    // the 512 bit result. The result is stored in two 256
    // variables such that product = prod1 * 2**256 + prod0
    uint256 prod0; // Least significant 256 bits of the product
    uint256 prod1; // Most significant 256 bits of the product
    assembly {
      let mm := mulmod(a, b, not(0))
      prod0 := mul(a, b)
      prod1 := sub(sub(mm, prod0), lt(mm, prod0))
    }

    // Handle non-overflow cases, 256 by 256 division
    if (prod1 == 0) {
      require(denominator > 0, '0 denom');
      assembly {
        result := div(prod0, denominator)
      }
      return result;
    }

    // Make sure the result is less than 2**256.
    // Also prevents denominator == 0
    require(denominator > prod1, 'denom <= prod1');

    ///////////////////////////////////////////////
    // 512 by 256 division.
    ///////////////////////////////////////////////

    // Make division exact by subtracting the remainder from [prod1 prod0]
    // Compute remainder using mulmod
    uint256 remainder;
    assembly {
      remainder := mulmod(a, b, denominator)
    }
    // Subtract 256 bit number from 512 bit number
    assembly {
      prod1 := sub(prod1, gt(remainder, prod0))
      prod0 := sub(prod0, remainder)
    }

    // Factor powers of two out of denominator
    // Compute largest power of two divisor of denominator.
    // Always >= 1.
    uint256 twos = denominator & (~denominator + 1);
    // Divide denominator by power of two
    assembly {
      denominator := div(denominator, twos)
    }

    // Divide [prod1 prod0] by the factors of two
    assembly {
      prod0 := div(prod0, twos)
    }
    // Shift in bits from prod1 into prod0. For this we need
    // to flip `twos` such that it is 2**256 / twos.
    // If twos is zero, then it becomes one
    assembly {
      twos := add(div(sub(0, twos), twos), 1)
    }
    unchecked {
      prod0 |= prod1 * twos;

      // Invert denominator mod 2**256
      // Now that denominator is an odd number, it has an inverse
      // modulo 2**256 such that denominator * inv = 1 mod 2**256.
      // Compute the inverse by starting with a seed that is correct
      // correct for four bits. That is, denominator * inv = 1 mod 2**4
      uint256 inv = (3 * denominator) ^ 2;

      // Now use Newton-Raphson iteration to improve the precision.
      // Thanks to Hensel's lifting lemma, this also works in modular
      // arithmetic, doubling the correct bits in each step.
      inv *= 2 - denominator * inv; // inverse mod 2**8
      inv *= 2 - denominator * inv; // inverse mod 2**16
      inv *= 2 - denominator * inv; // inverse mod 2**32
      inv *= 2 - denominator * inv; // inverse mod 2**64
      inv *= 2 - denominator * inv; // inverse mod 2**128
      inv *= 2 - denominator * inv; // inverse mod 2**256

      // Because the division is now exact we can divide by multiplying
      // with the modular inverse of denominator. This will give us the
      // correct result modulo 2**256. Since the precoditions guarantee
      // that the outcome is less than 2**256, this is the final result.
      // We don't need to compute the high bits of the result and prod1
      // is no longer required.
      result = prod0 * inv;
    }
    return result;
  }

  /// @notice Calculates ceil(a×b÷denominator) with full precision. Throws if result overflows a uint256 or denominator == 0
  /// @param a The multiplicand
  /// @param b The multiplier
  /// @param denominator The divisor
  /// @return result The 256-bit result
  function mulDivCeiling(
    uint256 a,
    uint256 b,
    uint256 denominator
  ) internal pure returns (uint256 result) {
    result = mulDivFloor(a, b, denominator);
    if (mulmod(a, b, denominator) > 0) {
      result++;
    }
  }
}

// SPDX-License-Identifier: MIT
pragma solidity >=0.8.0;

import {MathConstants as C} from './MathConstants.sol';
import {TickMath} from './TickMath.sol';
import {FullMath} from './FullMath.sol';
import {SafeCast} from './SafeCast.sol';

/// @title Contains helper functions for calculating
/// token0 and token1 quantites from differences in prices
/// or from burning reinvestment tokens
library QtyDeltaMath {
  using SafeCast for uint256;
  using SafeCast for int128;

  function calcUnlockQtys(uint160 initialSqrtP)
    internal
    pure
    returns (uint256 qty0, uint256 qty1)
  {
    qty0 = FullMath.mulDivCeiling(C.MIN_LIQUIDITY, C.TWO_POW_96, initialSqrtP);
    qty1 = FullMath.mulDivCeiling(C.MIN_LIQUIDITY, initialSqrtP, C.TWO_POW_96);
  }

  /// @notice Gets the qty0 delta between two prices
  /// @dev Calculates liquidity / sqrt(lower) - liquidity / sqrt(upper),
  /// i.e. liquidity * (sqrt(upper) - sqrt(lower)) / (sqrt(upper) * sqrt(lower))
  /// rounds up if adding liquidity, rounds down if removing liquidity
  /// @param lowerSqrtP The lower sqrt price.
  /// @param upperSqrtP The upper sqrt price. Should be >= lowerSqrtP
  /// @param liquidity Liquidity quantity
  /// @param isAddLiquidity true = add liquidity, false = remove liquidity
  /// @return token0 qty required for position with liquidity between the 2 sqrt prices
  function calcRequiredQty0(
    uint160 lowerSqrtP,
    uint160 upperSqrtP,
    uint128 liquidity,
    bool isAddLiquidity
  ) internal pure returns (int256) {
    uint256 numerator1 = uint256(liquidity) << C.RES_96;
    uint256 numerator2;
    unchecked {
      numerator2 = upperSqrtP - lowerSqrtP;
    }
    return
      isAddLiquidity
        ? (divCeiling(FullMath.mulDivCeiling(numerator1, numerator2, upperSqrtP), lowerSqrtP))
          .toInt256()
        : (FullMath.mulDivFloor(numerator1, numerator2, upperSqrtP) / lowerSqrtP).revToInt256();
  }

  /// @notice Gets the token1 delta quantity between two prices
  /// @dev Calculates liquidity * (sqrt(upper) - sqrt(lower))
  /// rounds up if adding liquidity, rounds down if removing liquidity
  /// @param lowerSqrtP The lower sqrt price.
  /// @param upperSqrtP The upper sqrt price. Should be >= lowerSqrtP
  /// @param liquidity Liquidity quantity
  /// @param isAddLiquidity true = add liquidity, false = remove liquidity
  /// @return token1 qty required for position with liquidity between the 2 sqrt prices
  function calcRequiredQty1(
    uint160 lowerSqrtP,
    uint160 upperSqrtP,
    uint128 liquidity,
    bool isAddLiquidity
  ) internal pure returns (int256) {
    unchecked {
      return
        isAddLiquidity
          ? (FullMath.mulDivCeiling(liquidity, upperSqrtP - lowerSqrtP, C.TWO_POW_96)).toInt256()
          : (FullMath.mulDivFloor(liquidity, upperSqrtP - lowerSqrtP, C.TWO_POW_96)).revToInt256();
    }
  }

  /// @notice Calculates the token0 quantity proportion to be sent to the user
  /// for burning reinvestment tokens
  /// @param sqrtP Current pool sqrt price
  /// @param liquidity Difference in reinvestment liquidity due to reinvestment token burn
  /// @return token0 quantity to be sent to the user
  function getQty0FromBurnRTokens(uint160 sqrtP, uint256 liquidity)
    internal
    pure
    returns (uint256)
  {
    return FullMath.mulDivFloor(liquidity, C.TWO_POW_96, sqrtP);
  }

  /// @notice Calculates the token1 quantity proportion to be sent to the user
  /// for burning reinvestment tokens
  /// @param sqrtP Current pool sqrt price
  /// @param liquidity Difference in reinvestment liquidity due to reinvestment token burn
  /// @return token1 quantity to be sent to the user
  function getQty1FromBurnRTokens(uint160 sqrtP, uint256 liquidity)
    internal
    pure
    returns (uint256)
  {
    return FullMath.mulDivFloor(liquidity, sqrtP, C.TWO_POW_96);
  }

  /// @notice Returns ceil(x / y)
  /// @dev division by 0 has unspecified behavior, and must be checked externally
  /// @param x The dividend
  /// @param y The divisor
  /// @return z The quotient, ceil(x / y)
  function divCeiling(uint256 x, uint256 y) internal pure returns (uint256 z) {
    // return x / y + ((x % y == 0) ? 0 : 1);
    require(y > 0);
    assembly {
      z := add(div(x, y), gt(mod(x, y), 0))
    }
  }
}

// SPDX-License-Identifier: agpl-3.0
pragma solidity >=0.8.0;

import {IPoolActions} from './pool/IPoolActions.sol';
import {IPoolEvents} from './pool/IPoolEvents.sol';
import {IPoolStorage} from './pool/IPoolStorage.sol';

interface IPool is IPoolActions, IPoolEvents, IPoolStorage {}

// SPDX-License-Identifier: agpl-3.0
pragma solidity >=0.8.0;

/// @title KyberSwap v2 factory
/// @notice Deploys KyberSwap v2 pools and manages control over government fees
interface IFactory {
  /// @notice Emitted when a pool is created
  /// @param token0 First pool token by address sort order
  /// @param token1 Second pool token by address sort order
  /// @param swapFeeUnits Fee to be collected upon every swap in the pool, in fee units
  /// @param tickDistance Minimum number of ticks between initialized ticks
  /// @param pool The address of the created pool
  event PoolCreated(
    address indexed token0,
    address indexed token1,
    uint24 indexed swapFeeUnits,
    int24 tickDistance,
    address pool
  );

  /// @notice Emitted when a new fee is enabled for pool creation via the factory
  /// @param swapFeeUnits Fee to be collected upon every swap in the pool, in fee units
  /// @param tickDistance Minimum number of ticks between initialized ticks for pools created with the given fee
  event SwapFeeEnabled(uint24 indexed swapFeeUnits, int24 indexed tickDistance);

  /// @notice Emitted when vesting period changes
  /// @param vestingPeriod The maximum time duration for which LP fees
  /// are proportionally burnt upon LP removals
  event VestingPeriodUpdated(uint32 vestingPeriod);

  /// @notice Emitted when configMaster changes
  /// @param oldConfigMaster configMaster before the update
  /// @param newConfigMaster configMaster after the update
  event ConfigMasterUpdated(address oldConfigMaster, address newConfigMaster);

  /// @notice Emitted when fee configuration changes
  /// @param feeTo Recipient of government fees
  /// @param governmentFeeUnits Fee amount, in fee units,
  /// to be collected out of the fee charged for a pool swap
  event FeeConfigurationUpdated(address feeTo, uint24 governmentFeeUnits);

  /// @notice Emitted when whitelist feature is enabled
  event WhitelistEnabled();

  /// @notice Emitted when whitelist feature is disabled
  event WhitelistDisabled();

  /// @notice Returns the maximum time duration for which LP fees
  /// are proportionally burnt upon LP removals
  function vestingPeriod() external view returns (uint32);

  /// @notice Returns the tick distance for a specified fee.
  /// @dev Once added, cannot be updated or removed.
  /// @param swapFeeUnits Swap fee, in fee units.
  /// @return The tick distance. Returns 0 if fee has not been added.
  function feeAmountTickDistance(uint24 swapFeeUnits) external view returns (int24);

  /// @notice Returns the address which can update the fee configuration
  function configMaster() external view returns (address);

  /// @notice Returns the keccak256 hash of the Pool creation code
  /// This is used for pre-computation of pool addresses
  function poolInitHash() external view returns (bytes32);

  /// @notice Fetches the recipient of government fees
  /// and current government fee charged in fee units
  function feeConfiguration() external view returns (address _feeTo, uint24 _governmentFeeUnits);

  /// @notice Returns the status of whitelisting feature of NFT managers
  /// If true, anyone can mint liquidity tokens
  /// Otherwise, only whitelisted NFT manager(s) are allowed to mint liquidity tokens
  function whitelistDisabled() external view returns (bool);

  //// @notice Returns all whitelisted NFT managers
  /// If the whitelisting feature is turned on,
  /// only whitelisted NFT manager(s) are allowed to mint liquidity tokens
  function getWhitelistedNFTManagers() external view returns (address[] memory);

  /// @notice Checks if sender is a whitelisted NFT manager
  /// If the whitelisting feature is turned on,
  /// only whitelisted NFT manager(s) are allowed to mint liquidity tokens
  /// @param sender address to be checked
  /// @return true if sender is a whistelisted NFT manager, false otherwise
  function isWhitelistedNFTManager(address sender) external view returns (bool);

  /// @notice Returns the pool address for a given pair of tokens and a swap fee
  /// @dev Token order does not matter
  /// @param tokenA Contract address of either token0 or token1
  /// @param tokenB Contract address of the other token
  /// @param swapFeeUnits Fee to be collected upon every swap in the pool, in fee units
  /// @return pool The pool address. Returns null address if it does not exist
  function getPool(
    address tokenA,
    address tokenB,
    uint24 swapFeeUnits
  ) external view returns (address pool);

  /// @notice Fetch parameters to be used for pool creation
  /// @dev Called by the pool constructor to fetch the parameters of the pool
  /// @return factory The factory address
  /// @return token0 First pool token by address sort order
  /// @return token1 Second pool token by address sort order
  /// @return swapFeeUnits Fee to be collected upon every swap in the pool, in fee units
  /// @return tickDistance Minimum number of ticks between initialized ticks
  function parameters()
    external
    view
    returns (
      address factory,
      address token0,
      address token1,
      uint24 swapFeeUnits,
      int24 tickDistance
    );

  /// @notice Creates a pool for the given two tokens and fee
  /// @param tokenA One of the two tokens in the desired pool
  /// @param tokenB The other of the two tokens in the desired pool
  /// @param swapFeeUnits Desired swap fee for the pool, in fee units
  /// @dev Token order does not matter. tickDistance is determined from the fee.
  /// Call will revert under any of these conditions:
  ///     1) pool already exists
  ///     2) invalid swap fee
  ///     3) invalid token arguments
  /// @return pool The address of the newly created pool
  function createPool(
    address tokenA,
    address tokenB,
    uint24 swapFeeUnits
  ) external returns (address pool);

  /// @notice Enables a fee amount with the given tickDistance
  /// @dev Fee amounts may never be removed once enabled
  /// @param swapFeeUnits The fee amount to enable, in fee units
  /// @param tickDistance The distance between ticks to be enforced for all pools created with the given fee amount
  function enableSwapFee(uint24 swapFeeUnits, int24 tickDistance) external;

  /// @notice Updates the address which can update the fee configuration
  /// @dev Must be called by the current configMaster
  function updateConfigMaster(address) external;

  /// @notice Updates the vesting period
  /// @dev Must be called by the current configMaster
  function updateVestingPeriod(uint32) external;

  /// @notice Updates the address receiving government fees and fee quantity
  /// @dev Only configMaster is able to perform the update
  /// @param feeTo Address to receive government fees collected from pools
  /// @param governmentFeeUnits Fee amount, in fee units,
  /// to be collected out of the fee charged for a pool swap
  function updateFeeConfiguration(address feeTo, uint24 governmentFeeUnits) external;

  /// @notice Enables the whitelisting feature
  /// @dev Only configMaster is able to perform the update
  function enableWhitelist() external;

  /// @notice Disables the whitelisting feature
  /// @dev Only configMaster is able to perform the update
  function disableWhitelist() external;
}

// SPDX-License-Identifier: GPL-2.0-or-later
pragma solidity >=0.8.0;

import {IERC721Metadata} from '@openzeppelin/contracts/token/ERC721/extensions/IERC721Metadata.sol';
import {IRouterTokenHelper} from './IRouterTokenHelper.sol';
import {IBasePositionManagerEvents} from './base_position_manager/IBasePositionManagerEvents.sol';
import {IERC721Permit} from './IERC721Permit.sol';

interface IBasePositionManager is IRouterTokenHelper, IBasePositionManagerEvents {
  struct Position {
    // the nonce for permits
    uint96 nonce;
    // the address that is approved for spending this token
    address operator;
    // the ID of the pool with which this token is connected
    uint80 poolId;
    // the tick range of the position
    int24 tickLower;
    int24 tickUpper;
    // the liquidity of the position
    uint128 liquidity;
    // the current rToken that the position owed
    uint256 rTokenOwed;
    // fee growth per unit of liquidity as of the last update to liquidity
    uint256 feeGrowthInsideLast;
  }

  struct PoolInfo {
    address token0;
    uint24 fee;
    address token1;
  }

  /// @notice Params for the first time adding liquidity, mint new nft to sender
  /// @param token0 the token0 of the pool
  /// @param token1 the token1 of the pool
  ///   - must make sure that token0 < token1
  /// @param fee the pool's fee in bps
  /// @param tickLower the position's lower tick
  /// @param tickUpper the position's upper tick
  ///   - must make sure tickLower < tickUpper, and both are in tick distance
  /// @param ticksPrevious the nearest tick that has been initialized and lower than or equal to
  ///   the tickLower and tickUpper, use to help insert the tickLower and tickUpper if haven't initialized
  /// @param amount0Desired the desired amount for token0
  /// @param amount1Desired the desired amount for token1
  /// @param amount0Min min amount of token 0 to add
  /// @param amount1Min min amount of token 1 to add
  /// @param recipient the owner of the position
  /// @param deadline time that the transaction will be expired
  struct MintParams {
    address token0;
    address token1;
    uint24 fee;
    int24 tickLower;
    int24 tickUpper;
    int24[2] ticksPrevious;
    uint256 amount0Desired;
    uint256 amount1Desired;
    uint256 amount0Min;
    uint256 amount1Min;
    address recipient;
    uint256 deadline;
  }

  /// @notice Params for adding liquidity to the existing position
  /// @param tokenId id of the position to increase its liquidity
  /// @param amount0Desired the desired amount for token0
  /// @param amount1Desired the desired amount for token1
  /// @param amount0Min min amount of token 0 to add
  /// @param amount1Min min amount of token 1 to add
  /// @param deadline time that the transaction will be expired
  struct IncreaseLiquidityParams {
    uint256 tokenId;
    uint256 amount0Desired;
    uint256 amount1Desired;
    uint256 amount0Min;
    uint256 amount1Min;
    uint256 deadline;
  }

  /// @notice Params for remove liquidity from the existing position
  /// @param tokenId id of the position to remove its liquidity
  /// @param amount0Min min amount of token 0 to receive
  /// @param amount1Min min amount of token 1 to receive
  /// @param deadline time that the transaction will be expired
  struct RemoveLiquidityParams {
    uint256 tokenId;
    uint128 liquidity;
    uint256 amount0Min;
    uint256 amount1Min;
    uint256 deadline;
  }

  /// @notice Burn the rTokens to get back token0 + token1 as fees
  /// @param tokenId id of the position to burn r token
  /// @param amount0Min min amount of token 0 to receive
  /// @param amount1Min min amount of token 1 to receive
  /// @param deadline time that the transaction will be expired
  struct BurnRTokenParams {
    uint256 tokenId;
    uint256 amount0Min;
    uint256 amount1Min;
    uint256 deadline;
  }

  /// @notice Creates a new pool if it does not exist, then unlocks if it has not been unlocked
  /// @param token0 the token0 of the pool
  /// @param token1 the token1 of the pool
  /// @param fee the fee for the pool
  /// @param currentSqrtP the initial price of the pool
  /// @return pool returns the pool address
  function createAndUnlockPoolIfNecessary(
    address token0,
    address token1,
    uint24 fee,
    uint160 currentSqrtP
  ) external payable returns (address pool);

  function mint(MintParams calldata params)
    external
    payable
    returns (
      uint256 tokenId,
      uint128 liquidity,
      uint256 amount0,
      uint256 amount1
    );

  function addLiquidity(IncreaseLiquidityParams calldata params)
    external
    payable
    returns (
      uint128 liquidity,
      uint256 amount0,
      uint256 amount1,
      uint256 additionalRTokenOwed
    );

  function removeLiquidity(RemoveLiquidityParams calldata params)
    external
    returns (
      uint256 amount0,
      uint256 amount1,
      uint256 additionalRTokenOwed
    );

  function burnRTokens(BurnRTokenParams calldata params)
    external
    returns (
      uint256 rTokenQty,
      uint256 amount0,
      uint256 amount1
    );

  /**
   * @dev Burn the token by its owner
   * @notice All liquidity should be removed before burning
   */
  function burn(uint256 tokenId) external payable;

  function positions(uint256 tokenId)
    external
    view
    returns (Position memory pos, PoolInfo memory info);

  function addressToPoolId(address pool) external view returns (uint80);

  function isRToken(address token) external view returns (bool);

  function nextPoolId() external view returns (uint80);

  function nextTokenId() external view returns (uint256);

  /**
   * @dev Returns true if this contract implements the interface defined by
   * `interfaceId`. See the corresponding
   * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section]
   * to learn more about how these ids are created.
   *
   * This function call must use less than 30 000 gas.
   */
  function supportsInterface(bytes4 interfaceId) external view returns (bool);
}

// SPDX-License-Identifier: GPL-2.0-or-later
pragma solidity >=0.8.0;

import './IBasePositionManager.sol';

/// @title Describes position NFT tokens via URI
interface INonfungibleTokenPositionDescriptor {
  /// @notice Produces the URI describing a particular token ID for a position manager
  /// @dev Note this URI may be a data: URI with the JSON contents directly inlined
  /// @param positionManager The position manager for which to describe the token
  /// @param tokenId The ID of the token for which to produce a description, which may not be valid
  /// @return The URI of the ERC721-compliant metadata
  function tokenURI(IBasePositionManager positionManager, uint256 tokenId)
    external
    view
    returns (string memory);
}

// SPDX-License-Identifier: GPL-2.0-or-later
pragma solidity >=0.8.0;

interface IRouterTokenHelper {
  /// @notice Unwraps the contract's WETH balance and sends it to recipient as ETH.
  /// @dev The minAmount parameter prevents malicious contracts from stealing WETH from users.
  /// @param minAmount The minimum amount of WETH to unwrap
  /// @param recipient The address receiving ETH
  function unwrapWeth(uint256 minAmount, address recipient) external payable;

  /// @notice Refunds any ETH balance held by this contract to the `msg.sender`
  /// @dev Useful for bundling with mint or increase liquidity that uses ether, or exact output swaps
  /// that use ether for the input amount
  function refundEth() external payable;

  /// @notice Transfers the full amount of a token held by this contract to recipient
  /// @dev The minAmount parameter prevents malicious contracts from stealing the token from users
  /// @param token The contract address of the token which will be transferred to `recipient`
  /// @param minAmount The minimum amount of token required for a transfer
  /// @param recipient The destination address of the token
  function transferAllTokens(
    address token,
    uint256 minAmount,
    address recipient
  ) external payable;
}

// SPDX-License-Identifier: GPL-2.0-or-later
pragma solidity 0.8.9;
pragma abicoder v2;

import {LiquidityMath} from '../libraries/LiquidityMath.sol';
import {PoolAddress} from '../libraries/PoolAddress.sol';
import {TickMath} from '../../libraries/TickMath.sol';

import {IPool} from '../../interfaces/IPool.sol';
import {IFactory} from '../../interfaces/IFactory.sol';
import {IMintCallback} from '../../interfaces/callback/IMintCallback.sol';

import {RouterTokenHelper} from './RouterTokenHelper.sol';

abstract contract LiquidityHelper is IMintCallback, RouterTokenHelper {
  constructor(address _factory, address _WETH) RouterTokenHelper(_factory, _WETH) {}

  struct AddLiquidityParams {
    address token0;
    address token1;
    uint24 fee;
    address recipient;
    int24 tickLower;
    int24 tickUpper;
    int24[2] ticksPrevious;
    uint256 amount0Desired;
    uint256 amount1Desired;
    uint256 amount0Min;
    uint256 amount1Min;
  }

  struct CallbackData {
    address token0;
    address token1;
    uint24 fee;
    address source;
  }

  function mintCallback(
    uint256 deltaQty0,
    uint256 deltaQty1,
    bytes calldata data
  ) external override {
    CallbackData memory callbackData = abi.decode(data, (CallbackData));
    require(callbackData.token0 < callbackData.token1, 'LiquidityHelper: wrong token order');
    address pool = address(_getPool(callbackData.token0, callbackData.token1, callbackData.fee));
    require(msg.sender == pool, 'LiquidityHelper: invalid callback sender');
    if (deltaQty0 > 0)
      _transferTokens(callbackData.token0, callbackData.source, msg.sender, deltaQty0);
    if (deltaQty1 > 0)
      _transferTokens(callbackData.token1, callbackData.source, msg.sender, deltaQty1);
  }

  /// @dev Add liquidity to a pool given params
  /// @param params add liquidity params, token0, token1 should be in the correct order
  /// @return liquidity amount of liquidity has been minted
  /// @return amount0 amount of token0 that is needed
  /// @return amount1 amount of token1 that is needed
  /// @return feeGrowthInsideLast position manager's updated feeGrowthInsideLast value
  /// @return pool address of the pool
  function _addLiquidity(AddLiquidityParams memory params)
    internal
    returns (
      uint128 liquidity,
      uint256 amount0,
      uint256 amount1,
      uint256 feeGrowthInsideLast,
      IPool pool
    )
  {
    require(params.token0 < params.token1, 'LiquidityHelper: invalid token order');
    pool = _getPool(params.token0, params.token1, params.fee);

    // compute the liquidity amount
    {
      (uint160 currentSqrtP, , , ) = pool.getPoolState();
      uint160 lowerSqrtP = TickMath.getSqrtRatioAtTick(params.tickLower);
      uint160 upperSqrtP = TickMath.getSqrtRatioAtTick(params.tickUpper);

      liquidity = LiquidityMath.getLiquidityFromQties(
        currentSqrtP,
        lowerSqrtP,
        upperSqrtP,
        params.amount0Desired,
        params.amount1Desired
      );
    }

    (amount0, amount1, feeGrowthInsideLast) = pool.mint(
      params.recipient,
      params.tickLower,
      params.tickUpper,
      params.ticksPrevious,
      liquidity,
      _callbackData(params.token0, params.token1, params.fee)
    );

    require(
      amount0 >= params.amount0Min && amount1 >= params.amount1Min,
      'LiquidityHelper: price slippage check'
    );
  }

  function _callbackData(
    address token0,
    address token1,
    uint24 fee
  ) internal view returns (bytes memory) {
    return
      abi.encode(CallbackData({token0: token0, token1: token1, fee: fee, source: msg.sender}));
  }

  /**
   * @dev Returns the pool address for the requested token pair swap fee
   * Because the function calculates it instead of fetching the address from the factory,
   * the returned pool address may not be in existence yet
   */
  function _getPool(
    address tokenA,
    address tokenB,
    uint24 fee
  ) internal view returns (IPool) {
    return IPool(PoolAddress.computeAddress(factory, tokenA, tokenB, fee, poolInitHash));
  }
}

// SPDX-License-Identifier: GPL-2.0-or-later
pragma solidity 0.8.9;

import {IERC20} from '@openzeppelin/contracts/token/ERC20/IERC20.sol';

import {TokenHelper} from '../libraries/TokenHelper.sol';

import {IRouterTokenHelper} from '../../interfaces/periphery/IRouterTokenHelper.sol';
import {IWETH} from '../../interfaces/IWETH.sol';

import {ImmutablePeripheryStorage} from './ImmutablePeripheryStorage.sol';

abstract contract RouterTokenHelper is IRouterTokenHelper, ImmutablePeripheryStorage {
  constructor(address _factory, address _WETH) ImmutablePeripheryStorage(_factory, _WETH) {}

  receive() external payable {
    require(msg.sender == WETH, 'Not WETH');
  }

  /// @dev Unwrap all ETH balance and send to the recipient
  function unwrapWeth(uint256 minAmount, address recipient) external payable override {
    uint256 balanceWETH = IWETH(WETH).balanceOf(address(this));
    require(balanceWETH >= minAmount, 'Insufficient WETH');

    if (balanceWETH > 0) {
      IWETH(WETH).withdraw(balanceWETH);
      TokenHelper.transferEth(recipient, balanceWETH);
    }
  }

  /// @dev Transfer all tokens from the contract to the recipient
  function transferAllTokens(
    address token,
    uint256 minAmount,
    address recipient
  ) public payable virtual override {
    uint256 balanceToken = IERC20(token).balanceOf(address(this));
    require(balanceToken >= minAmount, 'Insufficient token');

    if (balanceToken > 0) {
      TokenHelper.transferToken(IERC20(token), balanceToken, address(this), recipient);
    }
  }

  /// @dev Send all ETH balance of this contract to the sender
  function refundEth() external payable override {
    if (address(this).balance > 0) TokenHelper.transferEth(msg.sender, address(this).balance);
  }

  /// @dev Transfer tokenAmount amount of token from the sender to the recipient
  function _transferTokens(
    address token,
    address sender,
    address recipient,
    uint256 tokenAmount
  ) internal {
    if (token == WETH && address(this).balance >= tokenAmount) {
      IWETH(WETH).deposit{value: tokenAmount}();
      IWETH(WETH).transfer(recipient, tokenAmount);
    } else {
      TokenHelper.transferToken(IERC20(token), tokenAmount, sender, recipient);
    }
  }
}

// SPDX-License-Identifier: GPL-2.0-or-later
pragma solidity 0.8.9;
pragma abicoder v2;

import {IMulticall} from '../../interfaces/periphery/IMulticall.sol';

/// @title Multicall
/// @notice Enables calling multiple methods in a single call to the contract
abstract contract Multicall is IMulticall {
  /// @inheritdoc IMulticall
  function multicall(bytes[] calldata data)
    external
    payable
    override
    returns (bytes[] memory results)
  {
    results = new bytes[](data.length);
    for (uint256 i = 0; i < data.length; i++) {
      (bool success, bytes memory result) = address(this).delegatecall(data[i]);

      if (!success) {
        // Next 5 lines from https://ethereum.stackexchange.com/a/83577
        if (result.length < 68) revert();
        assembly {
          result := add(result, 0x04)
        }
        revert(abi.decode(result, (string)));
      }
      results[i] = result;
    }
  }
}

// SPDX-License-Identifier: GPL-2.0-or-later
pragma solidity 0.8.9;

/// @title Validate if the transaction is still valid
abstract contract DeadlineValidation {
  modifier onlyNotExpired(uint256 deadline) {
    require(_blockTimestamp() <= deadline, 'Expired');
    _;
  }

  /// @dev Override this function to test easier with block timestamp
  function _blockTimestamp() internal view virtual returns (uint256) {
    return block.timestamp;
  }
}

// SPDX-License-Identifier: GPL-2.0-or-later
pragma solidity 0.8.9;

import {ERC721} from '@openzeppelin/contracts/token/ERC721/ERC721.sol';
import {ERC721Enumerable} from '@openzeppelin/contracts/token/ERC721/extensions/ERC721Enumerable.sol';
import {Address} from '@openzeppelin/contracts/utils/Address.sol';

import {IERC721Permit} from '../../interfaces/periphery/IERC721Permit.sol';

import {DeadlineValidation} from './DeadlineValidation.sol';

/// @title Interface for verifying contract-based account signatures
/// @notice Interface that verifies provided signature for the data
/// @dev Interface defined by EIP-1271
interface IERC1271 {
  /// @notice Returns whether the provided signature is valid for the provided data
  /// @dev MUST return the bytes4 magic value 0x1626ba7e when function passes.
  /// MUST NOT modify state (using STATICCALL for solc < 0.5, view modifier for solc > 0.5).
  /// MUST allow external calls.
  /// @param hash Hash of the data to be signed
  /// @param signature Signature byte array associated with _data
  /// @return magicValue The bytes4 magic value 0x1626ba7e
  function isValidSignature(bytes32 hash, bytes memory signature)
    external
    view
    returns (bytes4 magicValue);
}

/// @title ERC721 with permit
/// @notice Nonfungible tokens that support an approve via signature, i.e. permit
abstract contract ERC721Permit is DeadlineValidation, ERC721Enumerable, IERC721Permit {
  /// @dev Value is equal to keccak256("Permit(address spender,uint256 tokenId,uint256 nonce,uint256 deadline)");
  bytes32 public constant override PERMIT_TYPEHASH =
    0x49ecf333e5b8c95c40fdafc95c1ad136e8914a8fb55e9dc8bb01eaa83a2df9ad;

  /// @dev The hash of the name used in the permit signature verification
  bytes32 private immutable nameHash;

  /// @dev The hash of the version string used in the permit signature verification
  bytes32 private immutable versionHash;

  /// @return The domain seperator used in encoding of permit signature
  bytes32 public immutable override DOMAIN_SEPARATOR;

  /// @notice Computes the nameHash and versionHash
  constructor(
    string memory name_,
    string memory symbol_,
    string memory version_
  ) ERC721(name_, symbol_) {
    bytes32 _nameHash = keccak256(bytes(name_));
    bytes32 _versionHash = keccak256(bytes(version_));
    nameHash = _nameHash;
    versionHash = _versionHash;
    DOMAIN_SEPARATOR = keccak256(
      abi.encode(
        // keccak256('EIP712Domain(string name,string version,uint256 chainId,address verifyingContract)')
        0x8b73c3c69bb8fe3d512ecc4cf759cc79239f7b179b0ffacaa9a75d522b39400f,
        _nameHash,
        _versionHash,
        _getChainId(),
        address(this)
      )
    );
  }

  function permit(
    address spender,
    uint256 tokenId,
    uint256 deadline,
    uint8 v,
    bytes32 r,
    bytes32 s
  ) external override onlyNotExpired(deadline) {
    bytes32 digest = keccak256(
      abi.encodePacked(
        '\x19\x01',
        DOMAIN_SEPARATOR,
        keccak256(
          abi.encode(PERMIT_TYPEHASH, spender, tokenId, _getAndIncrementNonce(tokenId), deadline)
        )
      )
    );
    address owner = ownerOf(tokenId);
    require(spender != owner, 'ERC721Permit: approval to current owner');

    if (Address.isContract(owner)) {
      require(
        IERC1271(owner).isValidSignature(digest, abi.encodePacked(r, s, v)) == 0x1626ba7e,
        'Unauthorized'
      );
    } else {
      address recoveredAddress = ecrecover(digest, v, r, s);
      require(recoveredAddress != address(0), 'Invalid signature');
      require(recoveredAddress == owner, 'Unauthorized');
    }

    _approve(spender, tokenId);
  }

  /// @dev Gets the current nonce for a token ID and then increments it, returning the original value
  function _getAndIncrementNonce(uint256 tokenId) internal virtual returns (uint256);

  /// @dev Gets the current chain ID
  /// @return chainId The current chain ID
  function _getChainId() internal view returns (uint256 chainId) {
    assembly {
      chainId := chainid()
    }
  }

  /**
   * @dev See {IERC165-supportsInterface}.
   */
  function supportsInterface(bytes4 interfaceId)
    public
    view
    virtual
    override(ERC721Enumerable, IERC721Permit)
    returns (bool)
  {
    return
      interfaceId == type(ERC721Enumerable).interfaceId ||
      interfaceId == type(IERC721Permit).interfaceId ||
      super.supportsInterface(interfaceId);
  }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC165 standard, as defined in the
 * https://eips.ethereum.org/EIPS/eip-165[EIP].
 *
 * Implementers can declare support of contract interfaces, which can then be
 * queried by others ({ERC165Checker}).
 *
 * For an implementation, see {ERC165}.
 */
interface IERC165 {
    /**
     * @dev Returns true if this contract implements the interface defined by
     * `interfaceId`. See the corresponding
     * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section]
     * to learn more about how these ids are created.
     *
     * This function call must use less than 30 000 gas.
     */
    function supportsInterface(bytes4 interfaceId) external view returns (bool);
}

// SPDX-License-Identifier: GPL-2.0-or-later
pragma solidity >=0.8.0;

/// @title Math library for computing sqrt prices from ticks and vice versa
/// @notice Computes sqrt price for ticks of size 1.0001, i.e. sqrt(1.0001^tick) as fixed point Q64.96 numbers. Supports
/// prices between 2**-128 and 2**128
library TickMath {
  /// @dev The minimum tick that may be passed to #getSqrtRatioAtTick computed from log base 1.0001 of 2**-128
  int24 internal constant MIN_TICK = -887272;
  /// @dev The maximum tick that may be passed to #getSqrtRatioAtTick computed from log base 1.0001 of 2**128
  int24 internal constant MAX_TICK = -MIN_TICK;

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

  /// @notice Calculates sqrt(1.0001^tick) * 2^96
  /// @dev Throws if |tick| > max tick
  /// @param tick The input tick for the above formula
  /// @return sqrtP A Fixed point Q64.96 number representing the sqrt of the ratio of the two assets (token1/token0)
  /// at the given tick
  function getSqrtRatioAtTick(int24 tick) internal pure returns (uint160 sqrtP) {
    unchecked {
      uint256 absTick = uint256(tick < 0 ? -int256(tick) : int256(tick));
      require(absTick <= uint256(int256(MAX_TICK)), 'T');

      // do bitwise comparison, if i-th bit is turned on,
      // multiply ratio by hardcoded values of sqrt(1.0001^-(2^i)) * 2^128
      // where 0 <= i <= 19
      uint256 ratio = (absTick & 0x1 != 0)
        ? 0xfffcb933bd6fad37aa2d162d1a594001
        : 0x100000000000000000000000000000000;
      if (absTick & 0x2 != 0) ratio = (ratio * 0xfff97272373d413259a46990580e213a) >> 128;
      if (absTick & 0x4 != 0) ratio = (ratio * 0xfff2e50f5f656932ef12357cf3c7fdcc) >> 128;
      if (absTick & 0x8 != 0) ratio = (ratio * 0xffe5caca7e10e4e61c3624eaa0941cd0) >> 128;
      if (absTick & 0x10 != 0) ratio = (ratio * 0xffcb9843d60f6159c9db58835c926644) >> 128;
      if (absTick & 0x20 != 0) ratio = (ratio * 0xff973b41fa98c081472e6896dfb254c0) >> 128;
      if (absTick & 0x40 != 0) ratio = (ratio * 0xff2ea16466c96a3843ec78b326b52861) >> 128;
      if (absTick & 0x80 != 0) ratio = (ratio * 0xfe5dee046a99a2a811c461f1969c3053) >> 128;
      if (absTick & 0x100 != 0) ratio = (ratio * 0xfcbe86c7900a88aedcffc83b479aa3a4) >> 128;
      if (absTick & 0x200 != 0) ratio = (ratio * 0xf987a7253ac413176f2b074cf7815e54) >> 128;
      if (absTick & 0x400 != 0) ratio = (ratio * 0xf3392b0822b70005940c7a398e4b70f3) >> 128;
      if (absTick & 0x800 != 0) ratio = (ratio * 0xe7159475a2c29b7443b29c7fa6e889d9) >> 128;
      if (absTick & 0x1000 != 0) ratio = (ratio * 0xd097f3bdfd2022b8845ad8f792aa5825) >> 128;
      if (absTick & 0x2000 != 0) ratio = (ratio * 0xa9f746462d870fdf8a65dc1f90e061e5) >> 128;
      if (absTick & 0x4000 != 0) ratio = (ratio * 0x70d869a156d2a1b890bb3df62baf32f7) >> 128;
      if (absTick & 0x8000 != 0) ratio = (ratio * 0x31be135f97d08fd981231505542fcfa6) >> 128;
      if (absTick & 0x10000 != 0) ratio = (ratio * 0x9aa508b5b7a84e1c677de54f3e99bc9) >> 128;
      if (absTick & 0x20000 != 0) ratio = (ratio * 0x5d6af8dedb81196699c329225ee604) >> 128;
      if (absTick & 0x40000 != 0) ratio = (ratio * 0x2216e584f5fa1ea926041bedfe98) >> 128;
      if (absTick & 0x80000 != 0) ratio = (ratio * 0x48a170391f7dc42444e8fa2) >> 128;

      // take reciprocal for positive tick values
      if (tick > 0) ratio = type(uint256).max / ratio;

      // this divides by 1<<32 rounding up to go from a Q128.128 to a Q128.96.
      // we then downcast because we know the result always fits within 160 bits due to our tick input constraint
      // we round up in the division so getTickAtSqrtRatio of the output price is always consistent
      sqrtP = uint160((ratio >> 32) + (ratio % (1 << 32) == 0 ? 0 : 1));
    }
  }

  /// @notice Calculates the greatest tick value such that getRatioAtTick(tick) <= ratio
  /// @dev Throws in case sqrtP < MIN_SQRT_RATIO, as MIN_SQRT_RATIO is the lowest value getRatioAtTick may
  /// ever return.
  /// @param sqrtP The sqrt ratio for which to compute the tick as a Q64.96
  /// @return tick The greatest tick for which the ratio is less than or equal to the input ratio
  function getTickAtSqrtRatio(uint160 sqrtP) internal pure returns (int24 tick) {
    // second inequality must be < because the price can never reach the price at the max tick
    require(sqrtP >= MIN_SQRT_RATIO && sqrtP < MAX_SQRT_RATIO, 'R');
    uint256 ratio = uint256(sqrtP) << 32;

    uint256 r = ratio;
    uint256 msb = 0;

    unchecked {
      assembly {
        let f := shl(7, gt(r, 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF))
        msb := or(msb, f)
        r := shr(f, r)
      }
      assembly {
        let f := shl(6, gt(r, 0xFFFFFFFFFFFFFFFF))
        msb := or(msb, f)
        r := shr(f, r)
      }
      assembly {
        let f := shl(5, gt(r, 0xFFFFFFFF))
        msb := or(msb, f)
        r := shr(f, r)
      }
      assembly {
        let f := shl(4, gt(r, 0xFFFF))
        msb := or(msb, f)
        r := shr(f, r)
      }
      assembly {
        let f := shl(3, gt(r, 0xFF))
        msb := or(msb, f)
        r := shr(f, r)
      }
      assembly {
        let f := shl(2, gt(r, 0xF))
        msb := or(msb, f)
        r := shr(f, r)
      }
      assembly {
        let f := shl(1, gt(r, 0x3))
        msb := or(msb, f)
        r := shr(f, r)
      }
      assembly {
        let f := gt(r, 0x1)
        msb := or(msb, f)
      }

      if (msb >= 128) r = ratio >> (msb - 127);
      else r = ratio << (127 - msb);

      int256 log_2 = (int256(msb) - 128) << 64;

      assembly {
        r := shr(127, mul(r, r))
        let f := shr(128, r)
        log_2 := or(log_2, shl(63, f))
        r := shr(f, r)
      }
      assembly {
        r := shr(127, mul(r, r))
        let f := shr(128, r)
        log_2 := or(log_2, shl(62, f))
        r := shr(f, r)
      }
      assembly {
        r := shr(127, mul(r, r))
        let f := shr(128, r)
        log_2 := or(log_2, shl(61, f))
        r := shr(f, r)
      }
      assembly {
        r := shr(127, mul(r, r))
        let f := shr(128, r)
        log_2 := or(log_2, shl(60, f))
        r := shr(f, r)
      }
      assembly {
        r := shr(127, mul(r, r))
        let f := shr(128, r)
        log_2 := or(log_2, shl(59, f))
        r := shr(f, r)
      }
      assembly {
        r := shr(127, mul(r, r))
        let f := shr(128, r)
        log_2 := or(log_2, shl(58, f))
        r := shr(f, r)
      }
      assembly {
        r := shr(127, mul(r, r))
        let f := shr(128, r)
        log_2 := or(log_2, shl(57, f))
        r := shr(f, r)
      }
      assembly {
        r := shr(127, mul(r, r))
        let f := shr(128, r)
        log_2 := or(log_2, shl(56, f))
        r := shr(f, r)
      }
      assembly {
        r := shr(127, mul(r, r))
        let f := shr(128, r)
        log_2 := or(log_2, shl(55, f))
        r := shr(f, r)
      }
      assembly {
        r := shr(127, mul(r, r))
        let f := shr(128, r)
        log_2 := or(log_2, shl(54, f))
        r := shr(f, r)
      }
      assembly {
        r := shr(127, mul(r, r))
        let f := shr(128, r)
        log_2 := or(log_2, shl(53, f))
        r := shr(f, r)
      }
      assembly {
        r := shr(127, mul(r, r))
        let f := shr(128, r)
        log_2 := or(log_2, shl(52, f))
        r := shr(f, r)
      }
      assembly {
        r := shr(127, mul(r, r))
        let f := shr(128, r)
        log_2 := or(log_2, shl(51, f))
        r := shr(f, r)
      }
      assembly {
        r := shr(127, mul(r, r))
        let f := shr(128, r)
        log_2 := or(log_2, shl(50, f))
      }

      int256 log_sqrt10001 = log_2 * 255738958999603826347141; // 128.128 number

      int24 tickLow = int24((log_sqrt10001 - 3402992956809132418596140100660247210) >> 128);
      int24 tickHi = int24((log_sqrt10001 + 291339464771989622907027621153398088495) >> 128);

      tick = tickLow == tickHi ? tickLow : getSqrtRatioAtTick(tickHi) <= sqrtP ? tickHi : tickLow;
    }
  }

  function getMaxNumberTicks(int24 _tickDistance) internal pure returns (uint24 numTicks) {
    return uint24(TickMath.MAX_TICK / _tickDistance) * 2;
  }
}

// SPDX-License-Identifier: agpl-3.0
pragma solidity >=0.8.0;

interface IPoolActions {
  /// @notice Sets the initial price for the pool and seeds reinvestment liquidity
  /// @dev Assumes the caller has sent the necessary token amounts
  /// required for initializing reinvestment liquidity prior to calling this function
  /// @param initialSqrtP the initial sqrt price of the pool
  /// @param qty0 token0 quantity sent to and locked permanently in the pool
  /// @param qty1 token1 quantity sent to and locked permanently in the pool
  function unlockPool(uint160 initialSqrtP) external returns (uint256 qty0, uint256 qty1);

  /// @notice Adds liquidity for the specified recipient/tickLower/tickUpper position
  /// @dev Any token0 or token1 owed for the liquidity provision have to be paid for when
  /// the IMintCallback#mintCallback is called to this method's caller
  /// The quantity of token0/token1 to be sent depends on
  /// tickLower, tickUpper, the amount of liquidity, and the current price of the pool.
  /// Also sends reinvestment tokens (fees) to the recipient for any fees collected
  /// while the position is in range
  /// Reinvestment tokens have to be burnt via #burnRTokens in exchange for token0 and token1
  /// @param recipient Address for which the added liquidity is credited to
  /// @param tickLower Recipient position's lower tick
  /// @param tickUpper Recipient position's upper tick
  /// @param ticksPrevious The nearest tick that is initialized and <= the lower & upper ticks
  /// @param qty Liquidity quantity to mint
  /// @param data Data (if any) to be passed through to the callback
  /// @return qty0 token0 quantity sent to the pool in exchange for the minted liquidity
  /// @return qty1 token1 quantity sent to the pool in exchange for the minted liquidity
  /// @return feeGrowthInside position's updated feeGrowthInside value
  function mint(
    address recipient,
    int24 tickLower,
    int24 tickUpper,
    int24[2] calldata ticksPrevious,
    uint128 qty,
    bytes calldata data
  )
    external
    returns (
      uint256 qty0,
      uint256 qty1,
      uint256 feeGrowthInside
    );

  /// @notice Remove liquidity from the caller
  /// Also sends reinvestment tokens (fees) to the caller for any fees collected
  /// while the position is in range
  /// Reinvestment tokens have to be burnt via #burnRTokens in exchange for token0 and token1
  /// @param tickLower Position's lower tick for which to burn liquidity
  /// @param tickUpper Position's upper tick for which to burn liquidity
  /// @param qty Liquidity quantity to burn
  /// @return qty0 token0 quantity sent to the caller
  /// @return qty1 token1 quantity sent to the caller
  /// @return feeGrowthInside position's updated feeGrowthInside value
  function burn(
    int24 tickLower,
    int24 tickUpper,
    uint128 qty
  )
    external
    returns (
      uint256 qty0,
      uint256 qty1,
      uint256 feeGrowthInside
    );

  /// @notice Burns reinvestment tokens in exchange to receive the fees collected in token0 and token1
  /// @param qty Reinvestment token quantity to burn
  /// @param isLogicalBurn true if burning rTokens without returning any token0/token1
  ///         otherwise should transfer token0/token1 to sender
  /// @return qty0 token0 quantity sent to the caller for burnt reinvestment tokens
  /// @return qty1 token1 quantity sent to the caller for burnt reinvestment tokens
  function burnRTokens(uint256 qty, bool isLogicalBurn)
    external
    returns (uint256 qty0, uint256 qty1);

  /// @notice Swap token0 -> token1, or vice versa
  /// @dev This method's caller receives a callback in the form of ISwapCallback#swapCallback
  /// @dev swaps will execute up to limitSqrtP or swapQty is fully used
  /// @param recipient The address to receive the swap output
  /// @param swapQty The swap quantity, which implicitly configures the swap as exact input (>0), or exact output (<0)
  /// @param isToken0 Whether the swapQty is specified in token0 (true) or token1 (false)
  /// @param limitSqrtP the limit of sqrt price after swapping
  /// could be MAX_SQRT_RATIO-1 when swapping 1 -> 0 and MIN_SQRT_RATIO+1 when swapping 0 -> 1 for no limit swap
  /// @param data Any data to be passed through to the callback
  /// @return qty0 Exact token0 qty sent to recipient if < 0. Minimally received quantity if > 0.
  /// @return qty1 Exact token1 qty sent to recipient if < 0. Minimally received quantity if > 0.
  function swap(
    address recipient,
    int256 swapQty,
    bool isToken0,
    uint160 limitSqrtP,
    bytes calldata data
  ) external returns (int256 qty0, int256 qty1);

  /// @notice Receive token0 and/or token1 and pay it back, plus a fee, in the callback
  /// @dev The caller of this method receives a callback in the form of IFlashCallback#flashCallback
  /// @dev Fees collected are sent to the feeTo address if it is set in Factory
  /// @param recipient The address which will receive the token0 and token1 quantities
  /// @param qty0 token0 quantity to be loaned to the recipient
  /// @param qty1 token1 quantity to be loaned to the recipient
  /// @param data Any data to be passed through to the callback
  function flash(
    address recipient,
    uint256 qty0,
    uint256 qty1,
    bytes calldata data
  ) external;
}

// SPDX-License-Identifier: agpl-3.0
pragma solidity >=0.8.0;

interface IPoolEvents {
  /// @notice Emitted only once per pool when #initialize is first called
  /// @dev Mint/Burn/Swap cannot be emitted by the pool before Initialize
  /// @param sqrtP The initial price of the pool
  /// @param tick The initial tick of the pool
  event Initialize(uint160 sqrtP, int24 tick);

  /// @notice Emitted when liquidity is minted for a given position
  /// @dev transfers reinvestment tokens for any collected fees earned by the position
  /// @param sender address that minted the liquidity
  /// @param owner address of owner of the position
  /// @param tickLower position's lower tick
  /// @param tickUpper position's upper tick
  /// @param qty liquidity minted to the position range
  /// @param qty0 token0 quantity needed to mint the liquidity
  /// @param qty1 token1 quantity needed to mint the liquidity
  event Mint(
    address sender,
    address indexed owner,
    int24 indexed tickLower,
    int24 indexed tickUpper,
    uint128 qty,
    uint256 qty0,
    uint256 qty1
  );

  /// @notice Emitted when a position's liquidity is removed
  /// @dev transfers reinvestment tokens for any collected fees earned by the position
  /// @param owner address of owner of the position
  /// @param tickLower position's lower tick
  /// @param tickUpper position's upper tick
  /// @param qty liquidity removed
  /// @param qty0 token0 quantity withdrawn from removal of liquidity
  /// @param qty1 token1 quantity withdrawn from removal of liquidity
  event Burn(
    address indexed owner,
    int24 indexed tickLower,
    int24 indexed tickUpper,
    uint128 qty,
    uint256 qty0,
    uint256 qty1
  );

  /// @notice Emitted when reinvestment tokens are burnt
  /// @param owner address which burnt the reinvestment tokens
  /// @param qty reinvestment token quantity burnt
  /// @param qty0 token0 quantity sent to owner for burning reinvestment tokens
  /// @param qty1 token1 quantity sent to owner for burning reinvestment tokens
  event BurnRTokens(address indexed owner, uint256 qty, uint256 qty0, uint256 qty1);

  /// @notice Emitted for swaps by the pool between token0 and token1
  /// @param sender Address that initiated the swap call, and that received the callback
  /// @param recipient Address that received the swap output
  /// @param deltaQty0 Change in pool's token0 balance
  /// @param deltaQty1 Change in pool's token1 balance
  /// @param sqrtP Pool's sqrt price after the swap
  /// @param liquidity Pool's liquidity after the swap
  /// @param currentTick Log base 1.0001 of pool's price after the swap
  event Swap(
    address indexed sender,
    address indexed recipient,
    int256 deltaQty0,
    int256 deltaQty1,
    uint160 sqrtP,
    uint128 liquidity,
    int24 currentTick
  );

  /// @notice Emitted by the pool for any flash loans of token0/token1
  /// @param sender The address that initiated the flash loan, and that received the callback
  /// @param recipient The address that received the flash loan quantities
  /// @param qty0 token0 quantity loaned to the recipient
  /// @param qty1 token1 quantity loaned to the recipient
  /// @param paid0 token0 quantity paid for the flash, which can exceed qty0 + fee
  /// @param paid1 token1 quantity paid for the flash, which can exceed qty0 + fee
  event Flash(
    address indexed sender,
    address indexed recipient,
    uint256 qty0,
    uint256 qty1,
    uint256 paid0,
    uint256 paid1
  );
}

// SPDX-License-Identifier: agpl-3.0
pragma solidity >=0.8.0;

import {IERC20} from '@openzeppelin/contracts/token/ERC20/IERC20.sol';

import {IFactory} from '../IFactory.sol';

interface IPoolStorage {
  /// @notice The contract that deployed the pool, which must adhere to the IFactory interface
  /// @return The contract address
  function factory() external view returns (IFactory);

  /// @notice The first of the two tokens of the pool, sorted by address
  /// @return The token contract address
  function token0() external view returns (IERC20);

  /// @notice The second of the two tokens of the pool, sorted by address
  /// @return The token contract address
  function token1() external view returns (IERC20);

  /// @notice The fee to be charged for a swap in basis points
  /// @return The swap fee in basis points
  function swapFeeUnits() external view returns (uint24);

  /// @notice The pool tick distance
  /// @dev Ticks can only be initialized and used at multiples of this value
  /// It remains an int24 to avoid casting even though it is >= 1.
  /// e.g: a tickDistance of 5 means ticks can be initialized every 5th tick, i.e., ..., -10, -5, 0, 5, 10, ...
  /// @return The tick distance
  function tickDistance() external view returns (int24);

  /// @notice Maximum gross liquidity that an initialized tick can have
  /// @dev This is to prevent overflow the pool's active base liquidity (uint128)
  /// also prevents out-of-range liquidity from being used to prevent adding in-range liquidity to a pool
  /// @return The max amount of liquidity per tick
  function maxTickLiquidity() external view returns (uint128);

  /// @notice Look up information about a specific tick in the pool
  /// @param tick The tick to look up
  /// @return liquidityGross total liquidity amount from positions that uses this tick as a lower or upper tick
  /// liquidityNet how much liquidity changes when the pool tick crosses above the tick
  /// feeGrowthOutside the fee growth on the other side of the tick relative to the current tick
  /// secondsPerLiquidityOutside the seconds spent on the other side of the tick relative to the current tick
  function ticks(int24 tick)
    external
    view
    returns (
      uint128 liquidityGross,
      int128 liquidityNet,
      uint256 feeGrowthOutside,
      uint128 secondsPerLiquidityOutside
    );

  /// @notice Returns the previous and next initialized ticks of a specific tick
  /// @dev If specified tick is uninitialized, the returned values are zero.
  /// @param tick The tick to look up
  function initializedTicks(int24 tick) external view returns (int24 previous, int24 next);

  /// @notice Returns the information about a position by the position's key
  /// @return liquidity the liquidity quantity of the position
  /// @return feeGrowthInsideLast fee growth inside the tick range as of the last mint / burn action performed
  function getPositions(
    address owner,
    int24 tickLower,
    int24 tickUpper
  ) external view returns (uint128 liquidity, uint256 feeGrowthInsideLast);

  /// @notice Fetches the pool's prices, ticks and lock status
  /// @return sqrtP sqrt of current price: sqrt(token1/token0)
  /// @return currentTick pool's current tick
  /// @return nearestCurrentTick pool's nearest initialized tick that is <= currentTick
  /// @return locked true if pool is locked, false otherwise
  function getPoolState()
    external
    view
    returns (
      uint160 sqrtP,
      int24 currentTick,
      int24 nearestCurrentTick,
      bool locked
    );

  /// @notice Fetches the pool's liquidity values
  /// @return baseL pool's base liquidity without reinvest liqudity
  /// @return reinvestL the liquidity is reinvested into the pool
  /// @return reinvestLLast last cached value of reinvestL, used for calculating reinvestment token qty
  function getLiquidityState()
    external
    view
    returns (
      uint128 baseL,
      uint128 reinvestL,
      uint128 reinvestLLast
    );

  /// @return feeGrowthGlobal All-time fee growth per unit of liquidity of the pool
  function getFeeGrowthGlobal() external view returns (uint256);

  /// @return secondsPerLiquidityGlobal All-time seconds per unit of liquidity of the pool
  /// @return lastUpdateTime The timestamp in which secondsPerLiquidityGlobal was last updated
  function getSecondsPerLiquidityData()
    external
    view
    returns (uint128 secondsPerLiquidityGlobal, uint32 lastUpdateTime);

  /// @notice Calculates and returns the active time per unit of liquidity until current block.timestamp
  /// @param tickLower The lower tick (of a position)
  /// @param tickUpper The upper tick (of a position)
  /// @return secondsPerLiquidityInside active time (multiplied by 2^96)
  /// between the 2 ticks, per unit of liquidity.
  function getSecondsPerLiquidityInside(int24 tickLower, int24 tickUpper)
    external
    view
    returns (uint128 secondsPerLiquidityInside);
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "../IERC721.sol";

/**
 * @title ERC-721 Non-Fungible Token Standard, optional metadata extension
 * @dev See https://eips.ethereum.org/EIPS/eip-721
 */
interface IERC721Metadata is IERC721 {
    /**
     * @dev Returns the token collection name.
     */
    function name() external view returns (string memory);

    /**
     * @dev Returns the token collection symbol.
     */
    function symbol() external view returns (string memory);

    /**
     * @dev Returns the Uniform Resource Identifier (URI) for `tokenId` token.
     */
    function tokenURI(uint256 tokenId) external view returns (string memory);
}

// SPDX-License-Identifier: agpl-3.0
pragma solidity >=0.8.0;

interface IBasePositionManagerEvents {
  /// @notice Emitted when a token is minted for a given position
  /// @param tokenId the newly minted tokenId
  /// @param poolId poolId of the token
  /// @param liquidity liquidity minted to the position range
  /// @param amount0 token0 quantity needed to mint the liquidity
  /// @param amount1 token1 quantity needed to mint the liquidity
  event MintPosition(
    uint256 indexed tokenId,
    uint80 indexed poolId,
    uint128 liquidity,
    uint256 amount0,
    uint256 amount1
  );

  /// @notice Emitted when a token is burned
  /// @param tokenId id of the token
  event BurnPosition(uint256 indexed tokenId);

  /// @notice Emitted when add liquidity
  /// @param tokenId id of the token
  /// @param liquidity the increase amount of liquidity
  /// @param amount0 token0 quantity needed to increase liquidity
  /// @param amount1 token1 quantity needed to increase liquidity
  /// @param additionalRTokenOwed additional rToken earned
  event AddLiquidity(
    uint256 indexed tokenId,
    uint128 liquidity,
    uint256 amount0,
    uint256 amount1,
    uint256 additionalRTokenOwed
  );

  /// @notice Emitted when remove liquidity
  /// @param tokenId id of the token
  /// @param liquidity the decease amount of liquidity
  /// @param amount0 token0 quantity returned when remove liquidity
  /// @param amount1 token1 quantity returned when remove liquidity
  /// @param additionalRTokenOwed additional rToken earned
  event RemoveLiquidity(
    uint256 indexed tokenId,
    uint128 liquidity,
    uint256 amount0,
    uint256 amount1,
    uint256 additionalRTokenOwed
  );
}

// SPDX-License-Identifier: GPL-2.0-or-later
pragma solidity >=0.8.0;

import {IERC721} from '@openzeppelin/contracts/token/ERC721/IERC721.sol';
import {IERC721Enumerable} from '@openzeppelin/contracts/token/ERC721/extensions/IERC721Enumerable.sol';

/// @title ERC721 with permit
/// @notice Extension to ERC721 that includes a permit function for signature based approvals
interface IERC721Permit is IERC721, IERC721Enumerable {
  /// @notice The permit typehash used in the permit signature
  /// @return The typehash for the permit
  function PERMIT_TYPEHASH() external pure returns (bytes32);

  /// @notice The domain separator used in the permit signature
  /// @return The domain seperator used in encoding of permit signature
  function DOMAIN_SEPARATOR() external view returns (bytes32);

  /// @notice Approve of a specific token ID for spending by spender via signature
  /// @param spender The account that is being approved
  /// @param tokenId The ID of the token that is being approved for spending
  /// @param deadline The deadline timestamp by which the call must be mined for the approve to work
  /// @param v Must produce valid secp256k1 signature from the holder along with `r` and `s`
  /// @param r Must produce valid secp256k1 signature from the holder along with `v` and `s`
  /// @param s Must produce valid secp256k1 signature from the holder along with `r` and `v`
  function permit(
    address spender,
    uint256 tokenId,
    uint256 deadline,
    uint8 v,
    bytes32 r,
    bytes32 s
  ) external;

  /**
   * @dev Returns true if this contract implements the interface defined by
   * `interfaceId`. See the corresponding
   * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section]
   * to learn more about how these ids are created.
   *
   * This function call must use less than 30 000 gas.
   */
  function supportsInterface(bytes4 interfaceId) external view returns (bool);
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "../IERC721.sol";

/**
 * @title ERC-721 Non-Fungible Token Standard, optional enumeration extension
 * @dev See https://eips.ethereum.org/EIPS/eip-721
 */
interface IERC721Enumerable is IERC721 {
    /**
     * @dev Returns the total amount of tokens stored by the contract.
     */
    function totalSupply() external view returns (uint256);

    /**
     * @dev Returns a token ID owned by `owner` at a given `index` of its token list.
     * Use along with {balanceOf} to enumerate all of ``owner``'s tokens.
     */
    function tokenOfOwnerByIndex(address owner, uint256 index) external view returns (uint256 tokenId);

    /**
     * @dev Returns a token ID at a given `index` of all the tokens stored by the contract.
     * Use along with {totalSupply} to enumerate all tokens.
     */
    function tokenByIndex(uint256 index) external view returns (uint256);
}

// SPDX-License-Identifier: agpl-3.0
pragma solidity 0.8.9;

import {MathConstants as C} from '../../libraries/MathConstants.sol';
import {FullMath} from '../../libraries/FullMath.sol';
import {SafeCast} from '../../libraries/SafeCast.sol';

library LiquidityMath {
  using SafeCast for uint256;

  /// @notice Gets liquidity from qty 0 and the price range
  /// qty0 = liquidity * (sqrt(upper) - sqrt(lower)) / (sqrt(upper) * sqrt(lower))
  /// => liquidity = qty0 * (sqrt(upper) * sqrt(lower)) / (sqrt(upper) - sqrt(lower))
  /// @param lowerSqrtP A lower sqrt price
  /// @param upperSqrtP An upper sqrt price
  /// @param qty0 amount of token0
  /// @return liquidity amount of returned liquidity to not exceed the qty0
  function getLiquidityFromQty0(
    uint160 lowerSqrtP,
    uint160 upperSqrtP,
    uint256 qty0
  ) internal pure returns (uint128) {
    uint256 liq = FullMath.mulDivFloor(lowerSqrtP, upperSqrtP, C.TWO_POW_96);
    unchecked {
      return FullMath.mulDivFloor(liq, qty0, upperSqrtP - lowerSqrtP).toUint128();
    }
  }

  /// @notice Gets liquidity from qty 1 and the price range
  /// @dev qty1 = liquidity * (sqrt(upper) - sqrt(lower))
  ///   thus, liquidity = qty1 / (sqrt(upper) - sqrt(lower))
  /// @param lowerSqrtP A lower sqrt price
  /// @param upperSqrtP An upper sqrt price
  /// @param qty1 amount of token1
  /// @return liquidity amount of returned liquidity to not exceed to qty1
  function getLiquidityFromQty1(
    uint160 lowerSqrtP,
    uint160 upperSqrtP,
    uint256 qty1
  ) internal pure returns (uint128) {
    unchecked {
      return FullMath.mulDivFloor(qty1, C.TWO_POW_96, upperSqrtP - lowerSqrtP).toUint128();
    }
  }

  /// @notice Gets liquidity given price range and 2 qties of token0 and token1
  /// @param currentSqrtP current price
  /// @param lowerSqrtP A lower sqrt price
  /// @param upperSqrtP An upper sqrt price
  /// @param qty0 amount of token0 - at most
  /// @param qty1 amount of token1 - at most
  /// @return liquidity amount of returned liquidity to not exceed the given qties
  function getLiquidityFromQties(
    uint160 currentSqrtP,
    uint160 lowerSqrtP,
    uint160 upperSqrtP,
    uint256 qty0,
    uint256 qty1
  ) internal pure returns (uint128) {
    if (currentSqrtP <= lowerSqrtP) {
      return getLiquidityFromQty0(lowerSqrtP, upperSqrtP, qty0);
    }
    if (currentSqrtP >= upperSqrtP) {
      return getLiquidityFromQty1(lowerSqrtP, upperSqrtP, qty1);
    }
    uint128 liq0 = getLiquidityFromQty0(currentSqrtP, upperSqrtP, qty0);
    uint128 liq1 = getLiquidityFromQty1(lowerSqrtP, currentSqrtP, qty1);
    return liq0 < liq1 ? liq0 : liq1;
  }
}

// SPDX-License-Identifier: agpl-3.0
pragma solidity >=0.8.0;

/// @title Callback for IPool#mint
/// @notice Any contract that calls IPool#mint must implement this interface
interface IMintCallback {
  /// @notice Called to `msg.sender` after minting liquidity via IPool#mint.
  /// @dev This function's implementation must send pool tokens to the pool for the minted LP tokens.
  /// The caller of this method must be checked to be a Pool deployed by the canonical Factory.
  /// @param deltaQty0 The token0 quantity to be sent to the pool.
  /// @param deltaQty1 The token1 quantity to be sent to the pool.
  /// @param data Data passed through by the caller via the IPool#mint call
  function mintCallback(
    uint256 deltaQty0,
    uint256 deltaQty1,
    bytes calldata data
  ) external;
}

// SPDX-License-Identifier: agpl-3.0
pragma solidity 0.8.9;

import '@openzeppelin/contracts/token/ERC20/IERC20.sol';
import '@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol';

/// @title Helper to transfer token or ETH
library TokenHelper {
  using SafeERC20 for IERC20;

  /// @dev Transfer token from the sender to the receiver
  /// @notice If the sender is the contract address, should just call transfer token to receiver
  ///   otherwise, tansfer tokens from the sender to the receiver
  function transferToken(
    IERC20 token,
    uint256 amount,
    address sender,
    address receiver
  ) internal {
    if (sender == address(this)) {
      token.safeTransfer(receiver, amount);
    } else {
      token.safeTransferFrom(sender, receiver, amount);
    }
  }

  /// @dev Transfer ETh to the receiver
  function transferEth(address receiver, uint256 amount) internal {
    if (receiver == address(this)) return;
    (bool success, ) = payable(receiver).call{value: amount}('');
    require(success, 'transfer eth failed');
  }
}

// SPDX-License-Identifier: GPL-2.0-or-later
pragma solidity >=0.8.0;

import {IERC20} from '@openzeppelin/contracts/token/ERC20/IERC20.sol';

/// @title Interface for WETH
interface IWETH is IERC20 {
  /// @notice Deposit ether to get wrapped ether
  function deposit() external payable;

  /// @notice Withdraw wrapped ether to get ether
  function withdraw(uint256) external;
}

// SPDX-License-Identifier: GPL-2.0-or-later
pragma solidity 0.8.9;

import {IFactory} from '../../interfaces/IFactory.sol';

/// @title Immutable state
/// @notice Immutable state used by periphery contracts
abstract contract ImmutablePeripheryStorage {
  address public immutable factory;
  address public immutable WETH;
  bytes32 internal immutable poolInitHash;

  constructor(address _factory, address _WETH) {
    factory = _factory;
    WETH = _WETH;
    poolInitHash = IFactory(_factory).poolInitHash();
  }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "../IERC20.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));
        }
    }

    /**
     * @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");
        }
    }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/**
 * @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
     * ====
     */
    function isContract(address account) internal view returns (bool) {
        // This method relies on extcodesize, which returns 0 for contracts in
        // construction, since the code is only stored at the end of the
        // constructor execution.

        uint256 size;
        assembly {
            size := extcodesize(account)
        }
        return size > 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 functionCall(target, data, "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");
        require(isContract(target), "Address: call to non-contract");

        (bool success, bytes memory returndata) = target.call{value: value}(data);
        return verifyCallResult(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) {
        require(isContract(target), "Address: static call to non-contract");

        (bool success, bytes memory returndata) = target.staticcall(data);
        return verifyCallResult(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) {
        require(isContract(target), "Address: delegate call to non-contract");

        (bool success, bytes memory returndata) = target.delegatecall(data);
        return verifyCallResult(success, returndata, errorMessage);
    }

    /**
     * @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the
     * revert reason 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 {
            // 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

                assembly {
                    let returndata_size := mload(returndata)
                    revert(add(32, returndata), returndata_size)
                }
            } else {
                revert(errorMessage);
            }
        }
    }
}

// SPDX-License-Identifier: GPL-2.0-or-later
pragma solidity >=0.8.0;
pragma abicoder v2;

/// @title Multicall interface
/// @notice Enables calling multiple methods in a single call to the contract
interface IMulticall {
  /// @notice Call multiple functions in the current contract and return the data from all of them if they all succeed
  /// @dev The `msg.value` should not be trusted for any method callable from multicall.
  /// @param data The encoded function data for each of the calls to make to this contract
  /// @return results The results from each of the calls passed in via data
  function multicall(bytes[] calldata data) external payable returns (bytes[] memory results);
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "./IERC721.sol";
import "./IERC721Receiver.sol";
import "./extensions/IERC721Metadata.sol";
import "../../utils/Address.sol";
import "../../utils/Context.sol";
import "../../utils/Strings.sol";
import "../../utils/introspection/ERC165.sol";

/**
 * @dev Implementation of https://eips.ethereum.org/EIPS/eip-721[ERC721] Non-Fungible Token Standard, including
 * the Metadata extension, but not including the Enumerable extension, which is available separately as
 * {ERC721Enumerable}.
 */
contract ERC721 is Context, ERC165, IERC721, IERC721Metadata {
    using Address for address;
    using Strings for uint256;

    // Token name
    string private _name;

    // Token symbol
    string private _symbol;

    // Mapping from token ID to owner address
    mapping(uint256 => address) private _owners;

    // Mapping owner address to token count
    mapping(address => uint256) private _balances;

    // Mapping from token ID to approved address
    mapping(uint256 => address) private _tokenApprovals;

    // Mapping from owner to operator approvals
    mapping(address => mapping(address => bool)) private _operatorApprovals;

    /**
     * @dev Initializes the contract by setting a `name` and a `symbol` to the token collection.
     */
    constructor(string memory name_, string memory symbol_) {
        _name = name_;
        _symbol = symbol_;
    }

    /**
     * @dev See {IERC165-supportsInterface}.
     */
    function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165, IERC165) returns (bool) {
        return
            interfaceId == type(IERC721).interfaceId ||
            interfaceId == type(IERC721Metadata).interfaceId ||
            super.supportsInterface(interfaceId);
    }

    /**
     * @dev See {IERC721-balanceOf}.
     */
    function balanceOf(address owner) public view virtual override returns (uint256) {
        require(owner != address(0), "ERC721: balance query for the zero address");
        return _balances[owner];
    }

    /**
     * @dev See {IERC721-ownerOf}.
     */
    function ownerOf(uint256 tokenId) public view virtual override returns (address) {
        address owner = _owners[tokenId];
        require(owner != address(0), "ERC721: owner query for nonexistent token");
        return owner;
    }

    /**
     * @dev See {IERC721Metadata-name}.
     */
    function name() public view virtual override returns (string memory) {
        return _name;
    }

    /**
     * @dev See {IERC721Metadata-symbol}.
     */
    function symbol() public view virtual override returns (string memory) {
        return _symbol;
    }

    /**
     * @dev See {IERC721Metadata-tokenURI}.
     */
    function tokenURI(uint256 tokenId) public view virtual override returns (string memory) {
        require(_exists(tokenId), "ERC721Metadata: URI query for nonexistent token");

        string memory baseURI = _baseURI();
        return bytes(baseURI).length > 0 ? string(abi.encodePacked(baseURI, tokenId.toString())) : "";
    }

    /**
     * @dev Base URI for computing {tokenURI}. If set, the resulting URI for each
     * token will be the concatenation of the `baseURI` and the `tokenId`. Empty
     * by default, can be overriden in child contracts.
     */
    function _baseURI() internal view virtual returns (string memory) {
        return "";
    }

    /**
     * @dev See {IERC721-approve}.
     */
    function approve(address to, uint256 tokenId) public virtual override {
        address owner = ERC721.ownerOf(tokenId);
        require(to != owner, "ERC721: approval to current owner");

        require(
            _msgSender() == owner || isApprovedForAll(owner, _msgSender()),
            "ERC721: approve caller is not owner nor approved for all"
        );

        _approve(to, tokenId);
    }

    /**
     * @dev See {IERC721-getApproved}.
     */
    function getApproved(uint256 tokenId) public view virtual override returns (address) {
        require(_exists(tokenId), "ERC721: approved query for nonexistent token");

        return _tokenApprovals[tokenId];
    }

    /**
     * @dev See {IERC721-setApprovalForAll}.
     */
    function setApprovalForAll(address operator, bool approved) public virtual override {
        require(operator != _msgSender(), "ERC721: approve to caller");

        _operatorApprovals[_msgSender()][operator] = approved;
        emit ApprovalForAll(_msgSender(), operator, approved);
    }

    /**
     * @dev See {IERC721-isApprovedForAll}.
     */
    function isApprovedForAll(address owner, address operator) public view virtual override returns (bool) {
        return _operatorApprovals[owner][operator];
    }

    /**
     * @dev See {IERC721-transferFrom}.
     */
    function transferFrom(
        address from,
        address to,
        uint256 tokenId
    ) public virtual override {
        //solhint-disable-next-line max-line-length
        require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved");

        _transfer(from, to, tokenId);
    }

    /**
     * @dev See {IERC721-safeTransferFrom}.
     */
    function safeTransferFrom(
        address from,
        address to,
        uint256 tokenId
    ) public virtual override {
        safeTransferFrom(from, to, tokenId, "");
    }

    /**
     * @dev See {IERC721-safeTransferFrom}.
     */
    function safeTransferFrom(
        address from,
        address to,
        uint256 tokenId,
        bytes memory _data
    ) public virtual override {
        require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved");
        _safeTransfer(from, to, tokenId, _data);
    }

    /**
     * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients
     * are aware of the ERC721 protocol to prevent tokens from being forever locked.
     *
     * `_data` is additional data, it has no specified format and it is sent in call to `to`.
     *
     * This internal function is equivalent to {safeTransferFrom}, and can be used to e.g.
     * implement alternative mechanisms to perform token transfer, such as signature-based.
     *
     * Requirements:
     *
     * - `from` cannot be the zero address.
     * - `to` cannot be the zero address.
     * - `tokenId` token must exist and be owned by `from`.
     * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
     *
     * Emits a {Transfer} event.
     */
    function _safeTransfer(
        address from,
        address to,
        uint256 tokenId,
        bytes memory _data
    ) internal virtual {
        _transfer(from, to, tokenId);
        require(_checkOnERC721Received(from, to, tokenId, _data), "ERC721: transfer to non ERC721Receiver implementer");
    }

    /**
     * @dev Returns whether `tokenId` exists.
     *
     * Tokens can be managed by their owner or approved accounts via {approve} or {setApprovalForAll}.
     *
     * Tokens start existing when they are minted (`_mint`),
     * and stop existing when they are burned (`_burn`).
     */
    function _exists(uint256 tokenId) internal view virtual returns (bool) {
        return _owners[tokenId] != address(0);
    }

    /**
     * @dev Returns whether `spender` is allowed to manage `tokenId`.
     *
     * Requirements:
     *
     * - `tokenId` must exist.
     */
    function _isApprovedOrOwner(address spender, uint256 tokenId) internal view virtual returns (bool) {
        require(_exists(tokenId), "ERC721: operator query for nonexistent token");
        address owner = ERC721.ownerOf(tokenId);
        return (spender == owner || getApproved(tokenId) == spender || isApprovedForAll(owner, spender));
    }

    /**
     * @dev Safely mints `tokenId` and transfers it to `to`.
     *
     * Requirements:
     *
     * - `tokenId` must not exist.
     * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
     *
     * Emits a {Transfer} event.
     */
    function _safeMint(address to, uint256 tokenId) internal virtual {
        _safeMint(to, tokenId, "");
    }

    /**
     * @dev Same as {xref-ERC721-_safeMint-address-uint256-}[`_safeMint`], with an additional `data` parameter which is
     * forwarded in {IERC721Receiver-onERC721Received} to contract recipients.
     */
    function _safeMint(
        address to,
        uint256 tokenId,
        bytes memory _data
    ) internal virtual {
        _mint(to, tokenId);
        require(
            _checkOnERC721Received(address(0), to, tokenId, _data),
            "ERC721: transfer to non ERC721Receiver implementer"
        );
    }

    /**
     * @dev Mints `tokenId` and transfers it to `to`.
     *
     * WARNING: Usage of this method is discouraged, use {_safeMint} whenever possible
     *
     * Requirements:
     *
     * - `tokenId` must not exist.
     * - `to` cannot be the zero address.
     *
     * Emits a {Transfer} event.
     */
    function _mint(address to, uint256 tokenId) internal virtual {
        require(to != address(0), "ERC721: mint to the zero address");
        require(!_exists(tokenId), "ERC721: token already minted");

        _beforeTokenTransfer(address(0), to, tokenId);

        _balances[to] += 1;
        _owners[tokenId] = to;

        emit Transfer(address(0), to, tokenId);
    }

    /**
     * @dev Destroys `tokenId`.
     * The approval is cleared when the token is burned.
     *
     * Requirements:
     *
     * - `tokenId` must exist.
     *
     * Emits a {Transfer} event.
     */
    function _burn(uint256 tokenId) internal virtual {
        address owner = ERC721.ownerOf(tokenId);

        _beforeTokenTransfer(owner, address(0), tokenId);

        // Clear approvals
        _approve(address(0), tokenId);

        _balances[owner] -= 1;
        delete _owners[tokenId];

        emit Transfer(owner, address(0), tokenId);
    }

    /**
     * @dev Transfers `tokenId` from `from` to `to`.
     *  As opposed to {transferFrom}, this imposes no restrictions on msg.sender.
     *
     * Requirements:
     *
     * - `to` cannot be the zero address.
     * - `tokenId` token must be owned by `from`.
     *
     * Emits a {Transfer} event.
     */
    function _transfer(
        address from,
        address to,
        uint256 tokenId
    ) internal virtual {
        require(ERC721.ownerOf(tokenId) == from, "ERC721: transfer of token that is not own");
        require(to != address(0), "ERC721: transfer to the zero address");

        _beforeTokenTransfer(from, to, tokenId);

        // Clear approvals from the previous owner
        _approve(address(0), tokenId);

        _balances[from] -= 1;
        _balances[to] += 1;
        _owners[tokenId] = to;

        emit Transfer(from, to, tokenId);
    }

    /**
     * @dev Approve `to` to operate on `tokenId`
     *
     * Emits a {Approval} event.
     */
    function _approve(address to, uint256 tokenId) internal virtual {
        _tokenApprovals[tokenId] = to;
        emit Approval(ERC721.ownerOf(tokenId), to, tokenId);
    }

    /**
     * @dev Internal function to invoke {IERC721Receiver-onERC721Received} on a target address.
     * The call is not executed if the target address is not a contract.
     *
     * @param from address representing the previous owner of the given token ID
     * @param to target address that will receive the tokens
     * @param tokenId uint256 ID of the token to be transferred
     * @param _data bytes optional data to send along with the call
     * @return bool whether the call correctly returned the expected magic value
     */
    function _checkOnERC721Received(
        address from,
        address to,
        uint256 tokenId,
        bytes memory _data
    ) private returns (bool) {
        if (to.isContract()) {
            try IERC721Receiver(to).onERC721Received(_msgSender(), from, tokenId, _data) returns (bytes4 retval) {
                return retval == IERC721Receiver.onERC721Received.selector;
            } catch (bytes memory reason) {
                if (reason.length == 0) {
                    revert("ERC721: transfer to non ERC721Receiver implementer");
                } else {
                    assembly {
                        revert(add(32, reason), mload(reason))
                    }
                }
            }
        } else {
            return true;
        }
    }

    /**
     * @dev Hook that is called before any token transfer. This includes minting
     * and burning.
     *
     * Calling conditions:
     *
     * - When `from` and `to` are both non-zero, ``from``'s `tokenId` will be
     * transferred to `to`.
     * - When `from` is zero, `tokenId` will be minted for `to`.
     * - When `to` is zero, ``from``'s `tokenId` 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 tokenId
    ) internal virtual {}
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "../ERC721.sol";
import "./IERC721Enumerable.sol";

/**
 * @dev This implements an optional extension of {ERC721} defined in the EIP that adds
 * enumerability of all the token ids in the contract as well as all token ids owned by each
 * account.
 */
abstract contract ERC721Enumerable is ERC721, IERC721Enumerable {
    // Mapping from owner to list of owned token IDs
    mapping(address => mapping(uint256 => uint256)) private _ownedTokens;

    // Mapping from token ID to index of the owner tokens list
    mapping(uint256 => uint256) private _ownedTokensIndex;

    // Array with all token ids, used for enumeration
    uint256[] private _allTokens;

    // Mapping from token id to position in the allTokens array
    mapping(uint256 => uint256) private _allTokensIndex;

    /**
     * @dev See {IERC165-supportsInterface}.
     */
    function supportsInterface(bytes4 interfaceId) public view virtual override(IERC165, ERC721) returns (bool) {
        return interfaceId == type(IERC721Enumerable).interfaceId || super.supportsInterface(interfaceId);
    }

    /**
     * @dev See {IERC721Enumerable-tokenOfOwnerByIndex}.
     */
    function tokenOfOwnerByIndex(address owner, uint256 index) public view virtual override returns (uint256) {
        require(index < ERC721.balanceOf(owner), "ERC721Enumerable: owner index out of bounds");
        return _ownedTokens[owner][index];
    }

    /**
     * @dev See {IERC721Enumerable-totalSupply}.
     */
    function totalSupply() public view virtual override returns (uint256) {
        return _allTokens.length;
    }

    /**
     * @dev See {IERC721Enumerable-tokenByIndex}.
     */
    function tokenByIndex(uint256 index) public view virtual override returns (uint256) {
        require(index < ERC721Enumerable.totalSupply(), "ERC721Enumerable: global index out of bounds");
        return _allTokens[index];
    }

    /**
     * @dev Hook that is called before any token transfer. This includes minting
     * and burning.
     *
     * Calling conditions:
     *
     * - When `from` and `to` are both non-zero, ``from``'s `tokenId` will be
     * transferred to `to`.
     * - When `from` is zero, `tokenId` will be minted for `to`.
     * - When `to` is zero, ``from``'s `tokenId` will be burned.
     * - `from` cannot be the zero address.
     * - `to` cannot be the zero address.
     *
     * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
     */
    function _beforeTokenTransfer(
        address from,
        address to,
        uint256 tokenId
    ) internal virtual override {
        super._beforeTokenTransfer(from, to, tokenId);

        if (from == address(0)) {
            _addTokenToAllTokensEnumeration(tokenId);
        } else if (from != to) {
            _removeTokenFromOwnerEnumeration(from, tokenId);
        }
        if (to == address(0)) {
            _removeTokenFromAllTokensEnumeration(tokenId);
        } else if (to != from) {
            _addTokenToOwnerEnumeration(to, tokenId);
        }
    }

    /**
     * @dev Private function to add a token to this extension's ownership-tracking data structures.
     * @param to address representing the new owner of the given token ID
     * @param tokenId uint256 ID of the token to be added to the tokens list of the given address
     */
    function _addTokenToOwnerEnumeration(address to, uint256 tokenId) private {
        uint256 length = ERC721.balanceOf(to);
        _ownedTokens[to][length] = tokenId;
        _ownedTokensIndex[tokenId] = length;
    }

    /**
     * @dev Private function to add a token to this extension's token tracking data structures.
     * @param tokenId uint256 ID of the token to be added to the tokens list
     */
    function _addTokenToAllTokensEnumeration(uint256 tokenId) private {
        _allTokensIndex[tokenId] = _allTokens.length;
        _allTokens.push(tokenId);
    }

    /**
     * @dev Private function to remove a token from this extension's ownership-tracking data structures. Note that
     * while the token is not assigned a new owner, the `_ownedTokensIndex` mapping is _not_ updated: this allows for
     * gas optimizations e.g. when performing a transfer operation (avoiding double writes).
     * This has O(1) time complexity, but alters the order of the _ownedTokens array.
     * @param from address representing the previous owner of the given token ID
     * @param tokenId uint256 ID of the token to be removed from the tokens list of the given address
     */
    function _removeTokenFromOwnerEnumeration(address from, uint256 tokenId) private {
        // To prevent a gap in from's tokens array, we store the last token in the index of the token to delete, and
        // then delete the last slot (swap and pop).

        uint256 lastTokenIndex = ERC721.balanceOf(from) - 1;
        uint256 tokenIndex = _ownedTokensIndex[tokenId];

        // When the token to delete is the last token, the swap operation is unnecessary
        if (tokenIndex != lastTokenIndex) {
            uint256 lastTokenId = _ownedTokens[from][lastTokenIndex];

            _ownedTokens[from][tokenIndex] = lastTokenId; // Move the last token to the slot of the to-delete token
            _ownedTokensIndex[lastTokenId] = tokenIndex; // Update the moved token's index
        }

        // This also deletes the contents at the last position of the array
        delete _ownedTokensIndex[tokenId];
        delete _ownedTokens[from][lastTokenIndex];
    }

    /**
     * @dev Private function to remove a token from this extension's token tracking data structures.
     * This has O(1) time complexity, but alters the order of the _allTokens array.
     * @param tokenId uint256 ID of the token to be removed from the tokens list
     */
    function _removeTokenFromAllTokensEnumeration(uint256 tokenId) private {
        // To prevent a gap in the tokens array, we store the last token in the index of the token to delete, and
        // then delete the last slot (swap and pop).

        uint256 lastTokenIndex = _allTokens.length - 1;
        uint256 tokenIndex = _allTokensIndex[tokenId];

        // When the token to delete is the last token, the swap operation is unnecessary. However, since this occurs so
        // rarely (when the last minted token is burnt) that we still do the swap here to avoid the gas cost of adding
        // an 'if' statement (like in _removeTokenFromOwnerEnumeration)
        uint256 lastTokenId = _allTokens[lastTokenIndex];

        _allTokens[tokenIndex] = lastTokenId; // Move the last token to the slot of the to-delete token
        _allTokensIndex[lastTokenId] = tokenIndex; // Update the moved token's index

        // This also deletes the contents at the last position of the array
        delete _allTokensIndex[tokenId];
        _allTokens.pop();
    }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/**
 * @title ERC721 token receiver interface
 * @dev Interface for any contract that wants to support safeTransfers
 * from ERC721 asset contracts.
 */
interface IERC721Receiver {
    /**
     * @dev Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom}
     * by `operator` from `from`, this function is called.
     *
     * It must return its Solidity selector to confirm the token transfer.
     * If any other value is returned or the interface is not implemented by the recipient, the transfer will be reverted.
     *
     * The selector can be obtained in Solidity with `IERC721.onERC721Received.selector`.
     */
    function onERC721Received(
        address operator,
        address from,
        uint256 tokenId,
        bytes calldata data
    ) external returns (bytes4);
}

// SPDX-License-Identifier: MIT

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;
    }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/**
 * @dev String operations.
 */
library Strings {
    bytes16 private constant _HEX_SYMBOLS = "0123456789abcdef";

    /**
     * @dev Converts a `uint256` to its ASCII `string` decimal representation.
     */
    function toString(uint256 value) internal pure returns (string memory) {
        // Inspired by OraclizeAPI's implementation - MIT licence
        // https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol

        if (value == 0) {
            return "0";
        }
        uint256 temp = value;
        uint256 digits;
        while (temp != 0) {
            digits++;
            temp /= 10;
        }
        bytes memory buffer = new bytes(digits);
        while (value != 0) {
            digits -= 1;
            buffer[digits] = bytes1(uint8(48 + uint256(value % 10)));
            value /= 10;
        }
        return string(buffer);
    }

    /**
     * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation.
     */
    function toHexString(uint256 value) internal pure returns (string memory) {
        if (value == 0) {
            return "0x00";
        }
        uint256 temp = value;
        uint256 length = 0;
        while (temp != 0) {
            length++;
            temp >>= 8;
        }
        return toHexString(value, length);
    }

    /**
     * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length.
     */
    function toHexString(uint256 value, uint256 length) internal pure returns (string memory) {
        bytes memory buffer = new bytes(2 * length + 2);
        buffer[0] = "0";
        buffer[1] = "x";
        for (uint256 i = 2 * length + 1; i > 1; --i) {
            buffer[i] = _HEX_SYMBOLS[value & 0xf];
            value >>= 4;
        }
        require(value == 0, "Strings: hex length insufficient");
        return string(buffer);
    }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "./IERC165.sol";

/**
 * @dev Implementation of the {IERC165} interface.
 *
 * Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check
 * for the additional interface id that will be supported. For example:
 *
 * ```solidity
 * function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
 *     return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId);
 * }
 * ```
 *
 * Alternatively, {ERC165Storage} provides an easier to use but more expensive implementation.
 */
abstract contract ERC165 is IERC165 {
    /**
     * @dev See {IERC165-supportsInterface}.
     */
    function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
        return interfaceId == type(IERC165).interfaceId;
    }
}

{
  "optimizer": {
    "enabled": true,
    "runs": 2000
  },
  "metadata": {
    "bytecodeHash": "none"
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "libraries": {}
}

• No Contract Security Audit Submitted- Submit Audit Here

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0000000000000000000000005f1dddbf348ac2fbe22a163e30f99f9ece3dd50a00000000000000000000000082af49447d8a07e3bd95bd0d56f35241523fbab10000000000000000000000008abd8c92f1901cf204590c16b5ef690a35b3741e

-----Decoded View---------------
Arg [0] : _factory (address): 0x5F1dddbf348aC2fbe22a163e30F99F9ECE3DD50a
Arg [1] : _WETH (address): 0x82aF49447D8a07e3bd95BD0d56f35241523fBab1
Arg [2] : _descriptor (address): 0x8abd8c92F1901cf204590c16b5EF690a35b3741E

-----Encoded View---------------
3 Constructor Arguments found :
Arg [0] : 0000000000000000000000005f1dddbf348ac2fbe22a163e30f99f9ece3dd50a
Arg [1] : 00000000000000000000000082af49447d8a07e3bd95bd0d56f35241523fbab1
Arg [2] : 0000000000000000000000008abd8c92f1901cf204590c16b5ef690a35b3741e