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0x3e87635b7BF86E62991C1BF2867150eee0C0d65A

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Similar Match Source Code
This contract matches the deployed Bytecode of the Source Code for Contract 0xb61fF698...d29251C2e
The constructor portion of the code might be different and could alter the actual behaviour of the contract

Contract Name:
ConstantProductPool

Compiler Version
v0.8.10+commit.fc410830

Optimization Enabled:
Yes with 999999 runs

Other Settings:
default evmVersion
File 1 of 10 : ConstantProductPool.sol
// SPDX-License-Identifier: GPL-3.0-or-later

pragma solidity >=0.8.0;

import {ERC20} from "@rari-capital/solmate/src/tokens/ERC20.sol";
import {ReentrancyGuard} from "@rari-capital/solmate/src/utils/ReentrancyGuard.sol";

import {IBentoBoxMinimal} from "../../interfaces/IBentoBoxMinimal.sol";
import {IPool} from "../../interfaces/IPool.sol";
import {ITridentCallee} from "../../interfaces/ITridentCallee.sol";
import {IConstantProductPoolFactory} from "../../interfaces/IConstantProductPoolFactory.sol";
import {IMasterDeployer} from "../../interfaces/IMasterDeployer.sol";

import {TridentMath} from "../../libraries/TridentMath.sol";

/// @dev Custom Errors
error ZeroAddress();
error IdenticalAddress();
error InvalidSwapFee();
error InvalidAmounts();
error InsufficientLiquidityMinted();
error InvalidOutputToken();
error InvalidInputToken();
error PoolUninitialized();
error InsufficientAmountIn();
error Overflow();

/// @notice Trident exchange pool template with constant product formula for swapping between an ERC-20 token pair.
/// @dev The reserves are stored as bento shares.
///      The curve is applied to shares as well. This pool does not care about the underlying amounts.
contract ConstantProductPool is IPool, ERC20, ReentrancyGuard {
    event Mint(address indexed sender, uint256 amount0, uint256 amount1, address indexed recipient);
    event Burn(address indexed sender, uint256 amount0, uint256 amount1, address indexed recipient);
    event Sync(uint256 reserve0, uint256 reserve1);

    uint256 internal constant MINIMUM_LIQUIDITY = 1000;

    uint8 internal constant PRECISION = 112;
    uint256 internal constant MAX_FEE = 10000; // @dev 100%.
    uint256 public immutable swapFee;
    uint256 internal immutable MAX_FEE_MINUS_SWAP_FEE;

    IBentoBoxMinimal public immutable bento;
    IMasterDeployer public immutable masterDeployer;
    address public immutable token0;
    address public immutable token1;

    uint256 public barFee;
    address public barFeeTo;
    uint256 public price0CumulativeLast;
    uint256 public price1CumulativeLast;
    uint256 public kLast;

    uint112 internal reserve0;
    uint112 internal reserve1;
    uint32 internal blockTimestampLast;

    bytes32 public constant override poolIdentifier = "Trident:ConstantProduct";

    constructor() ERC20("Sushi Constant Product LP Token", "SCPLP", 18) {
        (bytes memory _deployData, IMasterDeployer _masterDeployer) = IConstantProductPoolFactory(msg.sender).getDeployData();

        (address _token0, address _token1, uint256 _swapFee, bool _twapSupport) = abi.decode(
            _deployData,
            (address, address, uint256, bool)
        );

        // Factory ensures that the tokens are sorted.
        if (_token0 == address(0)) revert ZeroAddress();
        if (_token0 == _token1) revert IdenticalAddress();
        if (_swapFee > MAX_FEE) revert InvalidSwapFee();

        token0 = _token0;
        token1 = _token1;
        swapFee = _swapFee;
        // This is safe from underflow - `swapFee` cannot exceed `MAX_FEE` per previous check.
        unchecked {
            MAX_FEE_MINUS_SWAP_FEE = MAX_FEE - _swapFee;
        }
        barFee = _masterDeployer.barFee();
        barFeeTo = _masterDeployer.barFeeTo();
        bento = IBentoBoxMinimal(_masterDeployer.bento());
        masterDeployer = _masterDeployer;
        if (_twapSupport) blockTimestampLast = uint32(block.timestamp);
    }

    /// @dev Mints LP tokens - should be called via the router after transferring `bento` tokens.
    /// The router must ensure that sufficient LP tokens are minted by using the return value.
    function mint(bytes calldata data) public override nonReentrant returns (uint256 liquidity) {
        address recipient = abi.decode(data, (address));
        (uint112 _reserve0, uint112 _reserve1, uint32 _blockTimestampLast) = _getReserves();
        (uint256 balance0, uint256 balance1) = _balance();

        uint256 computed = TridentMath.sqrt(balance0 * balance1);
        uint256 amount0 = balance0 - _reserve0;
        uint256 amount1 = balance1 - _reserve1;

        (uint256 fee0, uint256 fee1) = _nonOptimalMintFee(amount0, amount1, _reserve0, _reserve1);
        _reserve0 += uint112(fee0);
        _reserve1 += uint112(fee1);

        (uint256 _totalSupply, uint256 k) = _mintFee(_reserve0, _reserve1);

        if (_totalSupply == 0) {
            if (amount0 == 0 || amount1 == 0) revert InvalidAmounts();
            liquidity = computed - MINIMUM_LIQUIDITY;
            _mint(address(0), MINIMUM_LIQUIDITY);
        } else {
            uint256 kIncrease;
            unchecked {
                kIncrease = computed - k;
            }
            liquidity = (kIncrease * _totalSupply) / k;
        }
        if (liquidity == 0) revert InsufficientLiquidityMinted();
        _mint(recipient, liquidity);
        _update(balance0, balance1, _reserve0, _reserve1, _blockTimestampLast);
        kLast = computed;
        emit Mint(msg.sender, amount0, amount1, recipient);
    }

    /// @dev Burns LP tokens sent to this contract. The router must ensure that the user gets sufficient output tokens.
    function burn(bytes calldata data) public override nonReentrant returns (IPool.TokenAmount[] memory withdrawnAmounts) {
        (address recipient, bool unwrapBento) = abi.decode(data, (address, bool));
        (uint112 _reserve0, uint112 _reserve1, uint32 _blockTimestampLast) = _getReserves();
        (uint256 balance0, uint256 balance1) = _balance();
        uint256 liquidity = balanceOf[address(this)];

        (uint256 _totalSupply, ) = _mintFee(_reserve0, _reserve1);

        uint256 amount0 = (liquidity * balance0) / _totalSupply;
        uint256 amount1 = (liquidity * balance1) / _totalSupply;

        _burn(address(this), liquidity);
        _transfer(token0, amount0, recipient, unwrapBento);
        _transfer(token1, amount1, recipient, unwrapBento);
        // This is safe from underflow - amounts are lesser figures derived from balances.
        unchecked {
            balance0 -= amount0;
            balance1 -= amount1;
        }
        _update(balance0, balance1, _reserve0, _reserve1, _blockTimestampLast);
        kLast = TridentMath.sqrt(balance0 * balance1);

        withdrawnAmounts = new TokenAmount[](2);
        withdrawnAmounts[0] = TokenAmount({token: address(token0), amount: amount0});
        withdrawnAmounts[1] = TokenAmount({token: address(token1), amount: amount1});
        emit Burn(msg.sender, amount0, amount1, recipient);
    }

    /// @dev Burns LP tokens sent to this contract and swaps one of the output tokens for another
    /// - i.e., the user gets a single token out by burning LP tokens.
    function burnSingle(bytes calldata data) public override nonReentrant returns (uint256 amountOut) {
        (address tokenOut, address recipient, bool unwrapBento) = abi.decode(data, (address, address, bool));
        (uint112 _reserve0, uint112 _reserve1, uint32 _blockTimestampLast) = _getReserves();
        uint256 liquidity = balanceOf[address(this)];

        (uint256 _totalSupply, ) = _mintFee(_reserve0, _reserve1);

        uint256 amount0 = (liquidity * _reserve0) / _totalSupply;
        uint256 amount1 = (liquidity * _reserve1) / _totalSupply;

        kLast = TridentMath.sqrt((_reserve0 - amount0) * (_reserve1 - amount1));

        _burn(address(this), liquidity);

        // Swap one token for another
        unchecked {
            if (tokenOut == token1) {
                // Swap `token0` for `token1`
                // - calculate `amountOut` as if the user first withdrew balanced liquidity and then swapped `token0` for `token1`.
                amount1 += _getAmountOut(amount0, _reserve0 - amount0, _reserve1 - amount1);
                _transfer(token1, amount1, recipient, unwrapBento);
                amountOut = amount1;
                amount0 = 0;
            } else {
                // Swap `token1` for `token0`.
                if (tokenOut != token0) revert InvalidOutputToken();
                amount0 += _getAmountOut(amount1, _reserve1 - amount1, _reserve0 - amount0);
                _transfer(token0, amount0, recipient, unwrapBento);
                amountOut = amount0;
                amount1 = 0;
            }
        }

        (uint256 balance0, uint256 balance1) = _balance();
        _update(balance0, balance1, _reserve0, _reserve1, _blockTimestampLast);

        emit Burn(msg.sender, amount0, amount1, recipient);
    }

    /// @dev Swaps one token for another. The router must prefund this contract and ensure there isn't too much slippage.
    function swap(bytes calldata data) public override nonReentrant returns (uint256 amountOut) {
        (address tokenIn, address recipient, bool unwrapBento) = abi.decode(data, (address, address, bool));
        (uint112 _reserve0, uint112 _reserve1, uint32 _blockTimestampLast) = _getReserves();
        if (_reserve0 == 0) revert PoolUninitialized();
        (uint256 balance0, uint256 balance1) = _balance();
        uint256 amountIn;
        address tokenOut;
        unchecked {
            if (tokenIn == token0) {
                tokenOut = token1;
                amountIn = balance0 - _reserve0;
                amountOut = _getAmountOut(amountIn, _reserve0, _reserve1);
                balance1 -= amountOut;
            } else {
                if (tokenIn != token1) revert InvalidInputToken();
                tokenOut = token0;
                amountIn = balance1 - reserve1;
                amountOut = _getAmountOut(amountIn, _reserve1, _reserve0);
                balance0 -= amountOut;
            }
        }
        _transfer(tokenOut, amountOut, recipient, unwrapBento);
        _update(balance0, balance1, _reserve0, _reserve1, _blockTimestampLast);
        emit Swap(recipient, tokenIn, tokenOut, amountIn, amountOut);
    }

    /// @dev Swaps one token for another. The router must support swap callbacks and ensure there isn't too much slippage.
    function flashSwap(bytes calldata data) public override nonReentrant returns (uint256 amountOut) {
        (address tokenIn, address recipient, bool unwrapBento, uint256 amountIn, bytes memory context) = abi.decode(
            data,
            (address, address, bool, uint256, bytes)
        );
        (uint112 _reserve0, uint112 _reserve1, uint32 _blockTimestampLast) = _getReserves();
        if (_reserve0 == 0) revert PoolUninitialized();
        unchecked {
            if (tokenIn == token0) {
                amountOut = _getAmountOut(amountIn, _reserve0, _reserve1);
                _transfer(token1, amountOut, recipient, unwrapBento);
                ITridentCallee(msg.sender).tridentSwapCallback(context);
                (uint256 balance0, uint256 balance1) = _balance();
                if (balance0 - _reserve0 < amountIn) revert InsufficientAmountIn();
                _update(balance0, balance1, _reserve0, _reserve1, _blockTimestampLast);
                emit Swap(recipient, tokenIn, token1, amountIn, amountOut);
            } else {
                if (tokenIn != token1) revert InvalidInputToken();
                amountOut = _getAmountOut(amountIn, _reserve1, _reserve0);
                _transfer(token0, amountOut, recipient, unwrapBento);
                ITridentCallee(msg.sender).tridentSwapCallback(context);
                (uint256 balance0, uint256 balance1) = _balance();
                if (balance1 - _reserve1 < amountIn) revert InsufficientAmountIn();
                _update(balance0, balance1, _reserve0, _reserve1, _blockTimestampLast);
                emit Swap(recipient, tokenIn, token0, amountIn, amountOut);
            }
        }
    }

    /// @dev Updates `barFee` and `barFeeTo` for Trident protocol.
    function updateBarParameters() public {
        barFee = masterDeployer.barFee();
        barFeeTo = masterDeployer.barFeeTo();
    }

    function _getReserves()
        internal
        view
        returns (
            uint112 _reserve0,
            uint112 _reserve1,
            uint32 _blockTimestampLast
        )
    {
        _reserve0 = reserve0;
        _reserve1 = reserve1;
        _blockTimestampLast = blockTimestampLast;
    }

    function _balance() internal view returns (uint256 balance0, uint256 balance1) {
        balance0 = bento.balanceOf(token0, address(this));
        balance1 = bento.balanceOf(token1, address(this));
    }

    function _update(
        uint256 balance0,
        uint256 balance1,
        uint112 _reserve0,
        uint112 _reserve1,
        uint32 _blockTimestampLast
    ) internal {
        if (balance0 > type(uint112).max || balance1 > type(uint112).max) revert Overflow();
        if (_blockTimestampLast == 0) {
            // TWAP support is disabled for gas efficiency.
            reserve0 = uint112(balance0);
            reserve1 = uint112(balance1);
        } else {
            uint32 blockTimestamp = uint32(block.timestamp);
            if (blockTimestamp != _blockTimestampLast && _reserve0 != 0 && _reserve1 != 0) {
                unchecked {
                    uint32 timeElapsed = blockTimestamp - _blockTimestampLast;
                    uint256 price0 = (uint256(_reserve1) << PRECISION) / _reserve0;
                    price0CumulativeLast += price0 * timeElapsed;
                    uint256 price1 = (uint256(_reserve0) << PRECISION) / _reserve1;
                    price1CumulativeLast += price1 * timeElapsed;
                }
            }
            reserve0 = uint112(balance0);
            reserve1 = uint112(balance1);
            blockTimestampLast = blockTimestamp;
        }
        emit Sync(balance0, balance1);
    }

    function _mintFee(uint112 _reserve0, uint112 _reserve1) internal returns (uint256 _totalSupply, uint256 computed) {
        _totalSupply = totalSupply;
        uint256 _kLast = kLast;
        if (_kLast != 0) {
            computed = TridentMath.sqrt(uint256(_reserve0) * _reserve1);
            if (computed > _kLast) {
                // `barFee` % of increase in liquidity.
                uint256 _barFee = barFee;
                uint256 numerator = _totalSupply * (computed - _kLast) * _barFee;
                uint256 denominator = (MAX_FEE - _barFee) * computed + _barFee * _kLast;
                uint256 liquidity = numerator / denominator;

                if (liquidity != 0) {
                    _mint(barFeeTo, liquidity);
                    _totalSupply += liquidity;
                }
            }
        }
    }

    function _getAmountOut(
        uint256 amountIn,
        uint256 reserveAmountIn,
        uint256 reserveAmountOut
    ) internal view returns (uint256 amountOut) {
        uint256 amountInWithFee = amountIn * MAX_FEE_MINUS_SWAP_FEE;
        amountOut = (amountInWithFee * reserveAmountOut) / (reserveAmountIn * MAX_FEE + amountInWithFee);
    }

    function _getAmountIn(
        uint256 amountOut,
        uint256 reserveAmountIn,
        uint256 reserveAmountOut
    ) internal view returns (uint256 amountIn) {
        amountIn = (reserveAmountIn * amountOut * MAX_FEE) / ((reserveAmountOut - amountOut) * MAX_FEE_MINUS_SWAP_FEE) + 1;
    }

    function _transfer(
        address token,
        uint256 shares,
        address to,
        bool unwrapBento
    ) internal {
        if (unwrapBento) {
            bento.withdraw(token, address(this), to, 0, shares);
        } else {
            bento.transfer(token, address(this), to, shares);
        }
    }

    /// @dev This fee is charged to cover for `swapFee` when users add unbalanced liquidity.
    function _nonOptimalMintFee(
        uint256 _amount0,
        uint256 _amount1,
        uint256 _reserve0,
        uint256 _reserve1
    ) internal view returns (uint256 token0Fee, uint256 token1Fee) {
        if (_reserve0 == 0 || _reserve1 == 0) return (0, 0);
        uint256 amount1Optimal = (_amount0 * _reserve1) / _reserve0;
        if (amount1Optimal <= _amount1) {
            token1Fee = (swapFee * (_amount1 - amount1Optimal)) / (2 * MAX_FEE);
        } else {
            uint256 amount0Optimal = (_amount1 * _reserve0) / _reserve1;
            token0Fee = (swapFee * (_amount0 - amount0Optimal)) / (2 * MAX_FEE);
        }
    }

    function getAssets() public view override returns (address[] memory assets) {
        assets = new address[](2);
        assets[0] = token0;
        assets[1] = token1;
    }

    function getAmountOut(bytes calldata data) public view override returns (uint256 finalAmountOut) {
        (address tokenIn, uint256 amountIn) = abi.decode(data, (address, uint256));
        (uint112 _reserve0, uint112 _reserve1, ) = _getReserves();
        if (tokenIn == token0) {
            finalAmountOut = _getAmountOut(amountIn, _reserve0, _reserve1);
        } else {
            if (tokenIn != token1) revert InvalidInputToken();
            finalAmountOut = _getAmountOut(amountIn, _reserve1, _reserve0);
        }
    }

    function getAmountIn(bytes calldata data) public view override returns (uint256 finalAmountIn) {
        (address tokenOut, uint256 amountOut) = abi.decode(data, (address, uint256));
        (uint112 _reserve0, uint112 _reserve1, ) = _getReserves();
        if (tokenOut == token1) {
            finalAmountIn = _getAmountIn(amountOut, _reserve0, _reserve1);
        } else {
            if (tokenOut != token0) revert InvalidOutputToken();
            finalAmountIn = _getAmountIn(amountOut, _reserve1, _reserve0);
        }
    }

    /// @dev Returned values are in terms of BentoBox "shares".
    function getReserves()
        public
        view
        returns (
            uint112 _reserve0,
            uint112 _reserve1,
            uint32 _blockTimestampLast
        )
    {
        return _getReserves();
    }

    /// @dev Returned values are the native ERC20 token amounts.
    function getNativeReserves()
        public
        view
        returns (
            uint256 _nativeReserve0,
            uint256 _nativeReserve1,
            uint32 _blockTimestampLast
        )
    {
        (uint112 _reserve0, uint112 _reserve1, uint32 __blockTimestampLast) = _getReserves();
        _nativeReserve0 = bento.toAmount(token0, _reserve0, false);
        _nativeReserve1 = bento.toAmount(token1, _reserve1, false);
        _blockTimestampLast = __blockTimestampLast;
    }
}

File 2 of 10 : ERC20.sol
// SPDX-License-Identifier: AGPL-3.0-only
pragma solidity >=0.8.0;

/// @notice Modern and gas efficient ERC20 + EIP-2612 implementation.
/// @author Solmate (https://github.com/Rari-Capital/solmate/blob/main/src/tokens/ERC20.sol)
/// @author Modified from Uniswap (https://github.com/Uniswap/uniswap-v2-core/blob/master/contracts/UniswapV2ERC20.sol)
/// @dev Do not manually set balances without updating totalSupply, as the sum of all user balances must not exceed it.
abstract contract ERC20 {
    /*///////////////////////////////////////////////////////////////
                                  EVENTS
    //////////////////////////////////////////////////////////////*/

    event Transfer(address indexed from, address indexed to, uint256 amount);

    event Approval(address indexed owner, address indexed spender, uint256 amount);

    /*///////////////////////////////////////////////////////////////
                             METADATA STORAGE
    //////////////////////////////////////////////////////////////*/

    string public name;

    string public symbol;

    uint8 public immutable decimals;

    /*///////////////////////////////////////////////////////////////
                              ERC20 STORAGE
    //////////////////////////////////////////////////////////////*/

    uint256 public totalSupply;

    mapping(address => uint256) public balanceOf;

    mapping(address => mapping(address => uint256)) public allowance;

    /*///////////////////////////////////////////////////////////////
                             EIP-2612 STORAGE
    //////////////////////////////////////////////////////////////*/

    bytes32 public constant PERMIT_TYPEHASH =
        keccak256("Permit(address owner,address spender,uint256 value,uint256 nonce,uint256 deadline)");

    uint256 internal immutable INITIAL_CHAIN_ID;

    bytes32 internal immutable INITIAL_DOMAIN_SEPARATOR;

    mapping(address => uint256) public nonces;

    /*///////////////////////////////////////////////////////////////
                               CONSTRUCTOR
    //////////////////////////////////////////////////////////////*/

    constructor(
        string memory _name,
        string memory _symbol,
        uint8 _decimals
    ) {
        name = _name;
        symbol = _symbol;
        decimals = _decimals;

        INITIAL_CHAIN_ID = block.chainid;
        INITIAL_DOMAIN_SEPARATOR = computeDomainSeparator();
    }

    /*///////////////////////////////////////////////////////////////
                              ERC20 LOGIC
    //////////////////////////////////////////////////////////////*/

    function approve(address spender, uint256 amount) public virtual returns (bool) {
        allowance[msg.sender][spender] = amount;

        emit Approval(msg.sender, spender, amount);

        return true;
    }

    function transfer(address to, uint256 amount) public virtual returns (bool) {
        balanceOf[msg.sender] -= amount;

        // Cannot overflow because the sum of all user
        // balances can't exceed the max uint256 value.
        unchecked {
            balanceOf[to] += amount;
        }

        emit Transfer(msg.sender, to, amount);

        return true;
    }

    function transferFrom(
        address from,
        address to,
        uint256 amount
    ) public virtual returns (bool) {
        uint256 allowed = allowance[from][msg.sender]; // Saves gas for limited approvals.

        if (allowed != type(uint256).max) allowance[from][msg.sender] = allowed - amount;

        balanceOf[from] -= amount;

        // Cannot overflow because the sum of all user
        // balances can't exceed the max uint256 value.
        unchecked {
            balanceOf[to] += amount;
        }

        emit Transfer(from, to, amount);

        return true;
    }

    /*///////////////////////////////////////////////////////////////
                              EIP-2612 LOGIC
    //////////////////////////////////////////////////////////////*/

    function permit(
        address owner,
        address spender,
        uint256 value,
        uint256 deadline,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) public virtual {
        require(deadline >= block.timestamp, "PERMIT_DEADLINE_EXPIRED");

        // Unchecked because the only math done is incrementing
        // the owner's nonce which cannot realistically overflow.
        unchecked {
            bytes32 digest = keccak256(
                abi.encodePacked(
                    "\x19\x01",
                    DOMAIN_SEPARATOR(),
                    keccak256(abi.encode(PERMIT_TYPEHASH, owner, spender, value, nonces[owner]++, deadline))
                )
            );

            address recoveredAddress = ecrecover(digest, v, r, s);

            require(recoveredAddress != address(0) && recoveredAddress == owner, "INVALID_SIGNER");

            allowance[recoveredAddress][spender] = value;
        }

        emit Approval(owner, spender, value);
    }

    function DOMAIN_SEPARATOR() public view virtual returns (bytes32) {
        return block.chainid == INITIAL_CHAIN_ID ? INITIAL_DOMAIN_SEPARATOR : computeDomainSeparator();
    }

    function computeDomainSeparator() internal view virtual returns (bytes32) {
        return
            keccak256(
                abi.encode(
                    keccak256("EIP712Domain(string name,string version,uint256 chainId,address verifyingContract)"),
                    keccak256(bytes(name)),
                    keccak256("1"),
                    block.chainid,
                    address(this)
                )
            );
    }

    /*///////////////////////////////////////////////////////////////
                       INTERNAL MINT/BURN LOGIC
    //////////////////////////////////////////////////////////////*/

    function _mint(address to, uint256 amount) internal virtual {
        totalSupply += amount;

        // Cannot overflow because the sum of all user
        // balances can't exceed the max uint256 value.
        unchecked {
            balanceOf[to] += amount;
        }

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

    function _burn(address from, uint256 amount) internal virtual {
        balanceOf[from] -= amount;

        // Cannot underflow because a user's balance
        // will never be larger than the total supply.
        unchecked {
            totalSupply -= amount;
        }

        emit Transfer(from, address(0), amount);
    }
}

File 3 of 10 : ReentrancyGuard.sol
// SPDX-License-Identifier: AGPL-3.0-only
pragma solidity >=0.8.0;

/// @notice Gas optimized reentrancy protection for smart contracts.
/// @author Solmate (https://github.com/Rari-Capital/solmate/blob/main/src/utils/ReentrancyGuard.sol)
/// @author Modified from OpenZeppelin (https://github.com/OpenZeppelin/openzeppelin-contracts/blob/master/contracts/security/ReentrancyGuard.sol)
abstract contract ReentrancyGuard {
    uint256 private reentrancyStatus = 1;

    modifier nonReentrant() {
        require(reentrancyStatus == 1, "REENTRANCY");

        reentrancyStatus = 2;

        _;

        reentrancyStatus = 1;
    }
}

File 4 of 10 : IBentoBoxMinimal.sol
// SPDX-License-Identifier: GPL-3.0-or-later

pragma solidity >=0.8.0;

import "../libraries/RebaseLibrary.sol";

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

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

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

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

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

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

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

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

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

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

File 5 of 10 : IPool.sol
// SPDX-License-Identifier: GPL-3.0-or-later

pragma solidity >=0.5.0;
pragma experimental ABIEncoderV2;

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

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

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

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

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

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

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

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

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

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

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

File 6 of 10 : ITridentCallee.sol
// SPDX-License-Identifier: GPL-3.0-or-later

pragma solidity >=0.8.0;

/// @notice Trident pool callback interface.
interface ITridentCallee {
    function tridentSwapCallback(bytes calldata data) external;

    function tridentMintCallback(bytes calldata data) external;
}

File 7 of 10 : IConstantProductPoolFactory.sol
// SPDX-License-Identifier: GPL-3.0-or-later

pragma solidity >=0.8.0;

import "./IMasterDeployer.sol";

interface IConstantProductPoolFactory {
    function getDeployData() external view returns (bytes memory, IMasterDeployer);
}

File 8 of 10 : IMasterDeployer.sol
// SPDX-License-Identifier: GPL-3.0-or-later

pragma solidity >=0.8.0;

/// @notice Trident pool deployer interface.
interface IMasterDeployer {
    function barFee() external view returns (uint256);

    function barFeeTo() external view returns (address);

    function bento() external view returns (address);

    function migrator() external view returns (address);

    function pools(address pool) external view returns (bool);

    function deployPool(address factory, bytes calldata deployData) external returns (address);

    function owner() external returns (address);
}

File 9 of 10 : TridentMath.sol
// SPDX-License-Identifier: GPL-3.0-or-later

pragma solidity >=0.8.0;

/// @notice Trident sqrt helper library.
library TridentMath {
    /// @dev Modified from Solmate (https://github.com/Rari-Capital/solmate/blob/main/src/utils/FixedPointMathLib.sol)
    function sqrt(uint256 x) internal pure returns (uint256 z) {
        assembly {
            // This segment is to get a reasonable initial estimate for the Babylonian method.
            // If the initial estimate is bad, the number of correct bits increases ~linearly
            // each iteration instead of ~quadratically.
            // The idea is to get z*z*y within a small factor of x.
            // More iterations here gets y in a tighter range. Currently, we will have
            // y in [256, 256*2^16). We ensure y>= 256 so that the relative difference
            // between y and y+1 is small. If x < 256 this is not possible, but those cases
            // are easy enough to verify exhaustively.
            z := 181 // The 'correct' value is 1, but this saves a multiply later
            let y := x
            // Note that we check y>= 2^(k + 8) but shift right by k bits each branch,
            // this is to ensure that if x >= 256, then y >= 256.
            if iszero(lt(y, 0x10000000000000000000000000000000000)) {
                y := shr(128, y)
                z := shl(64, z)
            }
            if iszero(lt(y, 0x1000000000000000000)) {
                y := shr(64, y)
                z := shl(32, z)
            }
            if iszero(lt(y, 0x10000000000)) {
                y := shr(32, y)
                z := shl(16, z)
            }
            if iszero(lt(y, 0x1000000)) {
                y := shr(16, y)
                z := shl(8, z)
            }
            // Now, z*z*y <= x < z*z*(y+1), and y <= 2^(16+8),
            // and either y >= 256, or x < 256.
            // Correctness can be checked exhaustively for x < 256, so we assume y >= 256.
            // Then z*sqrt(y) is within sqrt(257)/sqrt(256) of sqrt(x), or about 20bps.

            // For s in the range [1/256, 256], the estimate f(s) = (181/1024) * (s+1)
            // is in the range (1/2.84 * sqrt(s), 2.84 * sqrt(s)), with largest error when s=1
            // and when s = 256 or 1/256. Since y is in [256, 256*2^16), let a = y/65536, so
            // that a is in [1/256, 256). Then we can estimate sqrt(y) as
            // sqrt(65536) * 181/1024 * (a + 1) = 181/4 * (y + 65536)/65536 = 181 * (y + 65536)/2^18
            // There is no overflow risk here since y < 2^136 after the first branch above.
            z := shr(18, mul(z, add(y, 65536))) // A multiply is saved from the initial z := 181

            // Given the worst case multiplicative error of 2.84 above, 7 iterations should be enough.
            // Possibly with a quadratic/cubic polynomial above we could get 4-6.
            z := shr(1, add(z, div(x, z)))
            z := shr(1, add(z, div(x, z)))
            z := shr(1, add(z, div(x, z)))
            z := shr(1, add(z, div(x, z)))
            z := shr(1, add(z, div(x, z)))
            z := shr(1, add(z, div(x, z)))
            z := shr(1, add(z, div(x, z)))

            // See https://en.wikipedia.org/wiki/Integer_square_root#Using_only_integer_division.
            // If x+1 is a perfect square, the Babylonian method cycles between
            // floor(sqrt(x)) and ceil(sqrt(x)). This check ensures we return floor.
            // Since this case is rare, we choose to save gas on the assignment and
            // repeat division in the rare case.
            // If you don't care whether floor or ceil is returned, you can skip this.
            if lt(div(x, z), z) {
                z := div(x, z)
            }
        }
    }
}

File 10 of 10 : RebaseLibrary.sol
// SPDX-License-Identifier: GPL-3.0-or-later

pragma solidity ^0.8;

struct Rebase {
    uint128 elastic;
    uint128 base;
}

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

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

Settings
{
  "optimizer": {
    "enabled": true,
    "runs": 999999
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "metadata": {
    "useLiteralContent": true
  },
  "libraries": {}
}

Contract Security Audit

Contract ABI

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IBentoBoxMinimal","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes","name":"data","type":"bytes"}],"name":"burn","outputs":[{"components":[{"internalType":"address","name":"token","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"internalType":"struct IPool.TokenAmount[]","name":"withdrawnAmounts","type":"tuple[]"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes","name":"data","type":"bytes"}],"name":"burnSingle","outputs":[{"internalType":"uint256","name":"amountOut","type":"uint256"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"decimals","outputs":[{"internalType":"uint8","name":"","type":"uint8"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes","name":"data","type":"bytes"}],"name":"flashSwap","outputs":[{"internalType":"uint256","name":"amountOut","type":"uint256"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes","name":"data","type":"bytes"}],"name":"getAmountIn","outputs":[{"internalType":"uint256","name":"finalAmountIn","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes","name":"data","type":"bytes"}],"name":"getAmountOut","outputs":[{"internalType":"uint256","name":"finalAmountOut","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"getAssets","outputs":[{"internalType":"address[]","name":"assets","type":"address[]"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"getNativeReserves","outputs":[{"internalType":"uint256","name":"_nativeReserve0","type":"uint256"},{"internalType":"uint256","name":"_nativeReserve1","type":"uint256"},{"internalType":"uint32","name":"_blockTimestampLast","type":"uint32"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"getReserves","outputs":[{"internalType":"uint112","name":"_reserve0","type":"uint112"},{"internalType":"uint112","name":"_reserve1","type":"uint112"},{"internalType":"uint32","name":"_blockTimestampLast","type":"uint32"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"kLast","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"masterDeployer","outputs":[{"internalType":"contract IMasterDeployer","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes","name":"data","type":"bytes"}],"name":"mint","outputs":[{"internalType":"uint256","name":"liquidity","type":"uint256"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"name","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"nonces","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"owner","type":"address"},{"internalType":"address","name":"spender","type":"address"},{"internalType":"uint256","name":"value","type":"uint256"},{"internalType":"uint256","name":"deadline","type":"uint256"},{"internalType":"uint8","name":"v","type":"uint8"},{"internalType":"bytes32","name":"r","type":"bytes32"},{"internalType":"bytes32","name":"s","type":"bytes32"}],"name":"permit","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"poolIdentifier","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"price0CumulativeLast","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"price1CumulativeLast","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes","name":"data","type":"bytes"}],"name":"swap","outputs":[{"internalType":"uint256","name":"amountOut","type":"uint256"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"swapFee","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"symbol","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"token0","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"token1","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"totalSupply","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"transfer","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"transferFrom","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"updateBarParameters","outputs":[],"stateMutability":"nonpayable","type":"function"}]

Deployed Bytecode

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A contract address hosts a smart contract, which is a set of code stored on the blockchain that runs when predetermined conditions are met. Learn more about addresses in our Knowledge Base.