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                    11\   11\                     11\             11\   11\            11\                                       11\
                  1111 |  \__|                    11 |            111\  11 |           11 |                                      11 |
                  \_11 |  11\ 1111111\   1111111\ 1111111\        1111\ 11 | 111111\ 111111\   11\  11\  11\  111111\   111111\  11 |  11\
                    11 |  11 |11  __11\ 11  _____|11  __11\       11 11\11 |11  __11\\_11  _|  11 | 11 | 11 |11  __11\ 11  __11\ 11 | 11  |
                    11 |  11 |11 |  11 |11 /      11 |  11 |      11 \1111 |11111111 | 11 |    11 | 11 | 11 |11 /  11 |11 |  \__|111111  /
                    11 |  11 |11 |  11 |11 |      11 |  11 |      11 |\111 |11   ____| 11 |11\ 11 | 11 | 11 |11 |  11 |11 |      11  _11<
                  111111\ 11 |11 |  11 |\1111111\ 11 |  11 |      11 | \11 |\1111111\  \1111  |\11111\1111  |\111111  |11 |      11 | \11\
                  \______|\__|\__|  \__| \_______|\__|  \__|      \__|  \__| \_______|  \____/  \_____\____/  \______/ \__|      \__|  \__|



                               111111\                                                               11\     11\
                              11  __11\                                                              11 |    \__|
                              11 /  11 | 111111\   111111\   111111\   111111\   111111\   111111\ 111111\   11\  111111\  1111111\
                              11111111 |11  __11\ 11  __11\ 11  __11\ 11  __11\ 11  __11\  \____11\\_11  _|  11 |11  __11\ 11  __11\
                              11  __11 |11 /  11 |11 /  11 |11 |  \__|11111111 |11 /  11 | 1111111 | 11 |    11 |11 /  11 |11 |  11 |
                              11 |  11 |11 |  11 |11 |  11 |11 |      11   ____|11 |  11 |11  __11 | 11 |11\ 11 |11 |  11 |11 |  11 |
                              11 |  11 |\1111111 |\1111111 |11 |      \1111111\ \1111111 |\1111111 | \1111  |11 |\111111  |11 |  11 |
                              \__|  \__| \____11 | \____11 |\__|       \_______| \____11 | \_______|  \____/ \__| \______/ \__|  \__|
                                        11\   11 |11\   11 |                    11\   11 |
                                        \111111  |\111111  |                    \111111  |
                                         \______/  \______/                      \______/
                                                1111111\                        11\
                                                11  __11\                       11 |
                                                11 |  11 | 111111\  11\   11\ 111111\    111111\   111111\
                                                1111111  |11  __11\ 11 |  11 |\_11  _|  11  __11\ 11  __11\
                                                11  __11< 11 /  11 |11 |  11 |  11 |    11111111 |11 |  \__|
                                                11 |  11 |11 |  11 |11 |  11 |  11 |11\ 11   ____|11 |
                                                11 |  11 |\111111  |\111111  |  \1111  |\1111111\ 11 |
                                                \__|  \__| \______/  \______/    \____/  \_______|\__|
*/

// SPDX-License-Identifier: MIT

// File contracts/interfaces/IClipperExchangeInterface.sol


pragma solidity 0.8.17;

/// @title Clipper interface subset used in swaps
interface IClipperExchangeInterface {
    struct Signature {
        uint8 v;
        bytes32 r;
        bytes32 s;
    }

    function sellEthForToken(address outputToken, uint256 inputAmount, uint256 outputAmount, uint256 goodUntil, address destinationAddress, Signature calldata theSignature, bytes calldata auxiliaryData) external payable;
    function sellTokenForEth(address inputToken, uint256 inputAmount, uint256 outputAmount, uint256 goodUntil, address destinationAddress, Signature calldata theSignature, bytes calldata auxiliaryData) external;
    function swap(address inputToken, address outputToken, uint256 inputAmount, uint256 outputAmount, uint256 goodUntil, address destinationAddress, Signature calldata theSignature, bytes calldata auxiliaryData) external;
}


// File contracts/helpers/RouterErrors.sol


pragma solidity 0.8.17;

library RouterErrors {
    error ReturnAmountIsNotEnough();
    error InvalidMsgValue();
    error ERC20TransferFailed();
}


// File @1inch/solidity-utils/contracts/[email protected]


pragma solidity ^0.8.0;

abstract contract EthReceiver {
    error EthDepositRejected();

    receive() external payable {
        _receive();
    }

    function _receive() internal virtual {
        // solhint-disable-next-line avoid-tx-origin
        if (msg.sender == tx.origin) revert EthDepositRejected();
    }
}


// File @openzeppelin/contracts/token/ERC20/[email protected]

// OpenZeppelin Contracts (last updated v4.6.0) (token/ERC20/IERC20.sol)

pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC20 standard as defined in the EIP.
 */
interface IERC20 {
    /**
     * @dev Emitted when `value` tokens are moved from one account (`from`) to
     * another (`to`).
     *
     * Note that `value` may be zero.
     */
    event Transfer(address indexed from, address indexed to, uint256 value);

    /**
     * @dev Emitted when the allowance of a `spender` for an `owner` is set by
     * a call to {approve}. `value` is the new allowance.
     */
    event Approval(address indexed owner, address indexed spender, uint256 value);

    /**
     * @dev Returns the amount of tokens in existence.
     */
    function totalSupply() external view returns (uint256);

    /**
     * @dev Returns the amount of tokens owned by `account`.
     */
    function balanceOf(address account) external view returns (uint256);

    /**
     * @dev Moves `amount` tokens from the caller's account to `to`.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transfer(address to, uint256 amount) external returns (bool);

    /**
     * @dev Returns the remaining number of tokens that `spender` will be
     * allowed to spend on behalf of `owner` through {transferFrom}. This is
     * zero by default.
     *
     * This value changes when {approve} or {transferFrom} are called.
     */
    function allowance(address owner, address spender) external view returns (uint256);

    /**
     * @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * IMPORTANT: Beware that changing an allowance with this method brings the risk
     * that someone may use both the old and the new allowance by unfortunate
     * transaction ordering. One possible solution to mitigate this race
     * condition is to first reduce the spender's allowance to 0 and set the
     * desired value afterwards:
     * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
     *
     * Emits an {Approval} event.
     */
    function approve(address spender, uint256 amount) external returns (bool);

    /**
     * @dev Moves `amount` tokens from `from` to `to` using the
     * allowance mechanism. `amount` is then deducted from the caller's
     * allowance.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transferFrom(
        address from,
        address to,
        uint256 amount
    ) external returns (bool);
}


// File @1inch/solidity-utils/contracts/interfaces/[email protected]


pragma solidity ^0.8.0;


interface IDaiLikePermit {
    function permit(address holder, address spender, uint256 nonce, uint256 expiry, bool allowed, uint8 v, bytes32 r, bytes32 s) external;
}


// File @1inch/solidity-utils/contracts/libraries/[email protected]


pragma solidity ^0.8.0;

library RevertReasonForwarder {
    function reRevert() internal pure {
        // bubble up revert reason from latest external call
        /// @solidity memory-safe-assembly
        assembly { // solhint-disable-line no-inline-assembly
            let ptr := mload(0x40)
            returndatacopy(ptr, 0, returndatasize())
            revert(ptr, returndatasize())
        }
    }
}


// File @openzeppelin/contracts/token/ERC20/extensions/[email protected]

// OpenZeppelin Contracts v4.4.1 (token/ERC20/extensions/draft-IERC20Permit.sol)

pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC20 Permit extension allowing approvals to be made via signatures, as defined in
 * https://eips.ethereum.org/EIPS/eip-2612[EIP-2612].
 *
 * Adds the {permit} method, which can be used to change an account's ERC20 allowance (see {IERC20-allowance}) by
 * presenting a message signed by the account. By not relying on {IERC20-approve}, the token holder account doesn't
 * need to send a transaction, and thus is not required to hold Ether at all.
 */
interface IERC20Permit {
    /**
     * @dev Sets `value` as the allowance of `spender` over ``owner``'s tokens,
     * given ``owner``'s signed approval.
     *
     * IMPORTANT: The same issues {IERC20-approve} has related to transaction
     * ordering also apply here.
     *
     * Emits an {Approval} event.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     * - `deadline` must be a timestamp in the future.
     * - `v`, `r` and `s` must be a valid `secp256k1` signature from `owner`
     * over the EIP712-formatted function arguments.
     * - the signature must use ``owner``'s current nonce (see {nonces}).
     *
     * For more information on the signature format, see the
     * https://eips.ethereum.org/EIPS/eip-2612#specification[relevant EIP
     * section].
     */
    function permit(
        address owner,
        address spender,
        uint256 value,
        uint256 deadline,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) external;

    /**
     * @dev Returns the current nonce for `owner`. This value must be
     * included whenever a signature is generated for {permit}.
     *
     * Every successful call to {permit} increases ``owner``'s nonce by one. This
     * prevents a signature from being used multiple times.
     */
    function nonces(address owner) external view returns (uint256);

    /**
     * @dev Returns the domain separator used in the encoding of the signature for {permit}, as defined by {EIP712}.
     */
    // solhint-disable-next-line func-name-mixedcase
    function DOMAIN_SEPARATOR() external view returns (bytes32);
}


// File @1inch/solidity-utils/contracts/libraries/[email protected]


pragma solidity ^0.8.0;




library SafeERC20 {
    error SafeTransferFailed();
    error SafeTransferFromFailed();
    error ForceApproveFailed();
    error SafeIncreaseAllowanceFailed();
    error SafeDecreaseAllowanceFailed();
    error SafePermitBadLength();

    // Ensures method do not revert or return boolean `true`, admits call to non-smart-contract
    function safeTransferFrom(IERC20 token, address from, address to, uint256 amount) internal {
        bytes4 selector = token.transferFrom.selector;
        bool success;
        /// @solidity memory-safe-assembly
        assembly { // solhint-disable-line no-inline-assembly
            let data := mload(0x40)

            mstore(data, selector)
            mstore(add(data, 0x04), from)
            mstore(add(data, 0x24), to)
            mstore(add(data, 0x44), amount)
            success := call(gas(), token, 0, data, 100, 0x0, 0x20)
            if success {
                switch returndatasize()
                case 0 { success := gt(extcodesize(token), 0) }
                default { success := and(gt(returndatasize(), 31), eq(mload(0), 1)) }
            }
        }
        if (!success) revert SafeTransferFromFailed();
    }

    // Ensures method do not revert or return boolean `true`, admits call to non-smart-contract
    function safeTransfer(IERC20 token, address to, uint256 value) internal {
        if (!_makeCall(token, token.transfer.selector, to, value)) {
            revert SafeTransferFailed();
        }
    }

    // If `approve(from, to, amount)` fails, try to `approve(from, to, 0)` before retry
    function forceApprove(IERC20 token, address spender, uint256 value) internal {
        if (!_makeCall(token, token.approve.selector, spender, value)) {
            if (!_makeCall(token, token.approve.selector, spender, 0) ||
                !_makeCall(token, token.approve.selector, spender, value))
            {
                revert ForceApproveFailed();
            }
        }
    }

    function safeIncreaseAllowance(IERC20 token, address spender, uint256 value) internal {
        uint256 allowance = token.allowance(address(this), spender);
        if (value > type(uint256).max - allowance) revert SafeIncreaseAllowanceFailed();
        forceApprove(token, spender, allowance + value);
    }

    function safeDecreaseAllowance(IERC20 token, address spender, uint256 value) internal {
        uint256 allowance = token.allowance(address(this), spender);
        if (value > allowance) revert SafeDecreaseAllowanceFailed();
        forceApprove(token, spender, allowance - value);
    }

    function safePermit(IERC20 token, bytes calldata permit) internal {
        bool success;
        if (permit.length == 32 * 7) {
            success = _makeCalldataCall(token, IERC20Permit.permit.selector, permit);
        } else if (permit.length == 32 * 8) {
            success = _makeCalldataCall(token, IDaiLikePermit.permit.selector, permit);
        } else {
            revert SafePermitBadLength();
        }
        if (!success) RevertReasonForwarder.reRevert();
    }

    function _makeCall(IERC20 token, bytes4 selector, address to, uint256 amount) private returns(bool success) {
        /// @solidity memory-safe-assembly
        assembly { // solhint-disable-line no-inline-assembly
            let data := mload(0x40)

            mstore(data, selector)
            mstore(add(data, 0x04), to)
            mstore(add(data, 0x24), amount)
            success := call(gas(), token, 0, data, 0x44, 0x0, 0x20)
            if success {
                switch returndatasize()
                case 0 { success := gt(extcodesize(token), 0) }
                default { success := and(gt(returndatasize(), 31), eq(mload(0), 1)) }
            }
        }
    }

    function _makeCalldataCall(IERC20 token, bytes4 selector, bytes calldata args) private returns(bool success) {
        /// @solidity memory-safe-assembly
        assembly { // solhint-disable-line no-inline-assembly
            let len := add(4, args.length)
            let data := mload(0x40)

            mstore(data, selector)
            calldatacopy(add(data, 0x04), args.offset, args.length)
            success := call(gas(), token, 0, data, len, 0x0, 0x20)
            if success {
                switch returndatasize()
                case 0 { success := gt(extcodesize(token), 0) }
                default { success := and(gt(returndatasize(), 31), eq(mload(0), 1)) }
            }
        }
    }
}


// File @1inch/solidity-utils/contracts/interfaces/[email protected]


pragma solidity ^0.8.0;

interface IWETH is IERC20 {
    function deposit() external payable;
    function withdraw(uint256 amount) external;
}


// File contracts/routers/ClipperRouter.sol


pragma solidity 0.8.17;






/// @title Clipper router that allows to use `ClipperExchangeInterface` for swaps
contract ClipperRouter is EthReceiver {
    using SafeERC20 for IERC20;

    uint256 private constant _SIGNATURE_S_MASK = 0x7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff;
    uint256 private constant _SIGNATURE_V_SHIFT = 255;
    bytes6 private constant _INCH_TAG_WITH_LENGTH_PREFIX = "\x051INCH";
    IERC20 private constant _ETH = IERC20(address(0));
    IWETH private immutable _WETH;  // solhint-disable-line var-name-mixedcase

    constructor(IWETH weth) {
        _WETH = weth;
    }

    /// @notice Same as `clipperSwapTo` but calls permit first,
    /// allowing to approve token spending and make a swap in one transaction.
    /// @dev See tests for examples
    /// @param recipient Address that will receive swap funds
    /// @param srcToken Source token
    /// @param dstToken Destination token
    /// @param inputAmount Amount of source tokens to swap
    /// @param outputAmount Amount of destination tokens to receive
    /// @param goodUntil Timestamp until the swap will be valid
    /// @param r Clipper order signature (r part)
    /// @param vs Clipper order signature (vs part)
    /// @param permit Should contain valid permit that can be used in `IERC20Permit.permit` calls.
    /// @return returnAmount Amount of destination tokens received
    function clipperSwapToWithPermit(
        IClipperExchangeInterface clipperExchange,
        address payable recipient,
        IERC20 srcToken,
        IERC20 dstToken,
        uint256 inputAmount,
        uint256 outputAmount,
        uint256 goodUntil,
        bytes32 r,
        bytes32 vs,
        bytes calldata permit
    ) external returns(uint256 returnAmount) {
        srcToken.safePermit(permit);
        return clipperSwapTo(clipperExchange, recipient, srcToken, dstToken, inputAmount, outputAmount, goodUntil, r, vs);
    }

    /// @notice Same as `clipperSwapTo` but uses `msg.sender` as recipient
    /// @param srcToken Source token
    /// @param dstToken Destination token
    /// @param inputAmount Amount of source tokens to swap
    /// @param outputAmount Amount of destination tokens to receive
    /// @param goodUntil Timestamp until the swap will be valid
    /// @param r Clipper order signature (r part)
    /// @param vs Clipper order signature (vs part)
    /// @return returnAmount Amount of destination tokens received
    function clipperSwap(
        IClipperExchangeInterface clipperExchange,
        IERC20 srcToken,
        IERC20 dstToken,
        uint256 inputAmount,
        uint256 outputAmount,
        uint256 goodUntil,
        bytes32 r,
        bytes32 vs
    ) external payable returns(uint256 returnAmount) {
        return clipperSwapTo(clipperExchange, payable(msg.sender), srcToken, dstToken, inputAmount, outputAmount, goodUntil, r, vs);
    }

    /// @notice Performs swap using Clipper exchange. Wraps and unwraps ETH if required.
    /// Sending non-zero `msg.value` for anything but ETH swaps is prohibited
    /// @param recipient Address that will receive swap funds
    /// @param srcToken Source token
    /// @param dstToken Destination token
    /// @param inputAmount Amount of source tokens to swap
    /// @param outputAmount Amount of destination tokens to receive
    /// @param goodUntil Timestamp until the swap will be valid
    /// @param r Clipper order signature (r part)
    /// @param vs Clipper order signature (vs part)
    /// @return returnAmount Amount of destination tokens received
    function clipperSwapTo(
        IClipperExchangeInterface clipperExchange,
        address payable recipient,
        IERC20 srcToken,
        IERC20 dstToken,
        uint256 inputAmount,
        uint256 outputAmount,
        uint256 goodUntil,
        bytes32 r,
        bytes32 vs
    ) public payable returns(uint256 returnAmount) {
        bool srcETH = srcToken == _ETH;
        if (srcETH) {
            if (msg.value != inputAmount) revert RouterErrors.InvalidMsgValue();
        } else if (srcToken == _WETH) {
            srcETH = true;
            if (msg.value != 0) revert RouterErrors.InvalidMsgValue();
            // _WETH.transferFrom(msg.sender, address(this), inputAmount);
            // _WETH.withdraw(inputAmount);
            address weth = address(_WETH);
            bytes4 transferFromSelector = _WETH.transferFrom.selector;
            bytes4 withdrawSelector = _WETH.withdraw.selector;
            /// @solidity memory-safe-assembly
            assembly { // solhint-disable-line no-inline-assembly
                let ptr := mload(0x40)

                mstore(ptr, transferFromSelector)
                mstore(add(ptr, 0x04), caller())
                mstore(add(ptr, 0x24), address())
                mstore(add(ptr, 0x44), inputAmount)
                if iszero(call(gas(), weth, 0, ptr, 0x64, 0, 0)) {
                    returndatacopy(ptr, 0, returndatasize())
                    revert(ptr, returndatasize())
                }

                mstore(ptr, withdrawSelector)
                mstore(add(ptr, 0x04), inputAmount)
                if iszero(call(gas(), weth, 0, ptr, 0x24, 0, 0)) {
                    returndatacopy(ptr, 0, returndatasize())
                    revert(ptr, returndatasize())
                }
            }
        } else {
            if (msg.value != 0) revert RouterErrors.InvalidMsgValue();
            srcToken.safeTransferFrom(msg.sender, address(clipperExchange), inputAmount);
        }

        if (srcETH) {
            // clipperExchange.sellEthForToken{value: inputAmount}(address(dstToken), inputAmount, outputAmount, goodUntil, recipient, signature, _INCH_TAG);
            address clipper = address(clipperExchange);
            bytes4 selector = clipperExchange.sellEthForToken.selector;
            /// @solidity memory-safe-assembly
            assembly { // solhint-disable-line no-inline-assembly
                let ptr := mload(0x40)

                mstore(ptr, selector)
                mstore(add(ptr, 0x04), dstToken)
                mstore(add(ptr, 0x24), inputAmount)
                mstore(add(ptr, 0x44), outputAmount)
                mstore(add(ptr, 0x64), goodUntil)
                mstore(add(ptr, 0x84), recipient)
                mstore(add(ptr, 0xa4), add(27, shr(_SIGNATURE_V_SHIFT, vs)))
                mstore(add(ptr, 0xc4), r)
                mstore(add(ptr, 0xe4), and(vs, _SIGNATURE_S_MASK))
                mstore(add(ptr, 0x104), 0x120)
                mstore(add(ptr, 0x143), _INCH_TAG_WITH_LENGTH_PREFIX)
                if iszero(call(gas(), clipper, inputAmount, ptr, 0x149, 0, 0)) {
                    returndatacopy(ptr, 0, returndatasize())
                    revert(ptr, returndatasize())
                }
            }
        } else if (dstToken == _ETH || dstToken == _WETH) {
            // clipperExchange.sellTokenForEth(address(srcToken), inputAmount, outputAmount, goodUntil, recipient, signature, _INCH_TAG);
            address clipper = address(clipperExchange);
            bytes4 selector = clipperExchange.sellTokenForEth.selector;
            /// @solidity memory-safe-assembly
            assembly { // solhint-disable-line no-inline-assembly
                let ptr := mload(0x40)

                mstore(ptr, selector)
                mstore(add(ptr, 0x04), srcToken)
                mstore(add(ptr, 0x24), inputAmount)
                mstore(add(ptr, 0x44), outputAmount)
                mstore(add(ptr, 0x64), goodUntil)
                switch iszero(dstToken)
                case 1 {
                    mstore(add(ptr, 0x84), recipient)
                }
                default {
                    mstore(add(ptr, 0x84), address())
                }
                mstore(add(ptr, 0xa4), add(27, shr(_SIGNATURE_V_SHIFT, vs)))
                mstore(add(ptr, 0xc4), r)
                mstore(add(ptr, 0xe4), and(vs, _SIGNATURE_S_MASK))
                mstore(add(ptr, 0x104), 0x120)
                mstore(add(ptr, 0x143), _INCH_TAG_WITH_LENGTH_PREFIX)
                if iszero(call(gas(), clipper, 0, ptr, 0x149, 0, 0)) {
                    returndatacopy(ptr, 0, returndatasize())
                    revert(ptr, returndatasize())
                }
            }

            if (dstToken == _WETH) {
                // _WETH.deposit{value: outputAmount}();
                // _WETH.transfer(recipient, outputAmount);
                address weth = address(_WETH);
                bytes4 depositSelector = _WETH.deposit.selector;
                bytes4 transferSelector = _WETH.transfer.selector;
                /// @solidity memory-safe-assembly
                assembly { // solhint-disable-line no-inline-assembly
                    let ptr := mload(0x40)

                    mstore(ptr, depositSelector)
                    if iszero(call(gas(), weth, outputAmount, ptr, 0x04, 0, 0)) {
                        returndatacopy(ptr, 0, returndatasize())
                        revert(ptr, returndatasize())
                    }

                    mstore(ptr, transferSelector)
                    mstore(add(ptr, 0x04), recipient)
                    mstore(add(ptr, 0x24), outputAmount)
                    if iszero(call(gas(), weth, 0, ptr, 0x44, 0, 0)) {
                        returndatacopy(ptr, 0, returndatasize())
                        revert(ptr, returndatasize())
                    }
                }
            }
        } else {
            // clipperExchange.swap(address(srcToken), address(dstToken), inputAmount, outputAmount, goodUntil, recipient, signature, _INCH_TAG);
            address clipper = address(clipperExchange);
            bytes4 selector = clipperExchange.swap.selector;
            /// @solidity memory-safe-assembly
            assembly { // solhint-disable-line no-inline-assembly
                let ptr := mload(0x40)

                mstore(ptr, selector)
                mstore(add(ptr, 0x04), srcToken)
                mstore(add(ptr, 0x24), dstToken)
                mstore(add(ptr, 0x44), inputAmount)
                mstore(add(ptr, 0x64), outputAmount)
                mstore(add(ptr, 0x84), goodUntil)
                mstore(add(ptr, 0xa4), recipient)
                mstore(add(ptr, 0xc4), add(27, shr(_SIGNATURE_V_SHIFT, vs)))
                mstore(add(ptr, 0xe4), r)
                mstore(add(ptr, 0x104), and(vs, _SIGNATURE_S_MASK))
                mstore(add(ptr, 0x124), 0x140)
                mstore(add(ptr, 0x163), _INCH_TAG_WITH_LENGTH_PREFIX)
                if iszero(call(gas(), clipper, 0, ptr, 0x169, 0, 0)) {
                    returndatacopy(ptr, 0, returndatasize())
                    revert(ptr, returndatasize())
                }
            }
        }

        return outputAmount;
    }
}


// File contracts/interfaces/IAggregationExecutor.sol


pragma solidity 0.8.17;

/// @title Interface for making arbitrary calls during swap
interface IAggregationExecutor {
    /// @notice propagates information about original msg.sender and executes arbitrary data
    function execute(address msgSender) external payable;  // 0x4b64e492
}


// File @1inch/solidity-utils/contracts/interfaces/[email protected]


pragma solidity ^0.8.0;


interface IERC20MetadataUppercase {
    function NAME() external view returns (string memory);  // solhint-disable-line func-name-mixedcase
    function SYMBOL() external view returns (string memory);  // solhint-disable-line func-name-mixedcase
}


// File @1inch/solidity-utils/contracts/libraries/[email protected]


pragma solidity ^0.8.0;

/// @title Library with gas-efficient string operations
library StringUtil {
    function toHex(uint256 value) internal pure returns (string memory) {
        return toHex(abi.encodePacked(value));
    }

    function toHex(address value) internal pure returns (string memory) {
        return toHex(abi.encodePacked(value));
    }

    function toHex(bytes memory data) internal pure returns (string memory result) {
        /// @solidity memory-safe-assembly
        assembly { // solhint-disable-line no-inline-assembly
            function _toHex16(input) -> output {
                output := or(
                    and(input, 0xFFFFFFFFFFFFFFFF000000000000000000000000000000000000000000000000),
                    shr(64, and(input, 0x0000000000000000FFFFFFFFFFFFFFFF00000000000000000000000000000000))
                )
                output := or(
                    and(output, 0xFFFFFFFF000000000000000000000000FFFFFFFF000000000000000000000000),
                    shr(32, and(output, 0x00000000FFFFFFFF000000000000000000000000FFFFFFFF0000000000000000))
                )
                output := or(
                    and(output, 0xFFFF000000000000FFFF000000000000FFFF000000000000FFFF000000000000),
                    shr(16, and(output, 0x0000FFFF000000000000FFFF000000000000FFFF000000000000FFFF00000000))
                )
                output := or(
                    and(output, 0xFF000000FF000000FF000000FF000000FF000000FF000000FF000000FF000000),
                    shr(8, and(output, 0x00FF000000FF000000FF000000FF000000FF000000FF000000FF000000FF0000))
                )
                output := or(
                    shr(4, and(output, 0xF000F000F000F000F000F000F000F000F000F000F000F000F000F000F000F000)),
                    shr(8, and(output, 0x0F000F000F000F000F000F000F000F000F000F000F000F000F000F000F000F00))
                )
                output := add(
                    add(0x3030303030303030303030303030303030303030303030303030303030303030, output),
                    mul(
                        and(
                            shr(4, add(output, 0x0606060606060606060606060606060606060606060606060606060606060606)),
                            0x0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F
                        ),
                        7   // Change 7 to 39 for lower case output
                    )
                )
            }

            result := mload(0x40)
            let length := mload(data)
            let resultLength := shl(1, length)
            let toPtr := add(result, 0x22)          // 32 bytes for length + 2 bytes for '0x'
            mstore(0x40, add(toPtr, resultLength))  // move free memory pointer
            mstore(add(result, 2), 0x3078)          // 0x3078 is right aligned so we write to `result + 2`
                                                    // to store the last 2 bytes in the beginning of the string
            mstore(result, add(resultLength, 2))    // extra 2 bytes for '0x'

            for {
                let fromPtr := add(data, 0x20)
                let endPtr := add(fromPtr, length)
            } lt(fromPtr, endPtr) {
                fromPtr := add(fromPtr, 0x20)
            } {
                let rawData := mload(fromPtr)
                let hexData := _toHex16(rawData)
                mstore(toPtr, hexData)
                toPtr := add(toPtr, 0x20)
                hexData := _toHex16(shl(128, rawData))
                mstore(toPtr, hexData)
                toPtr := add(toPtr, 0x20)
            }
        }
    }
}


// File @openzeppelin/contracts/token/ERC20/extensions/[email protected]

// OpenZeppelin Contracts v4.4.1 (token/ERC20/extensions/IERC20Metadata.sol)

pragma solidity ^0.8.0;

/**
 * @dev Interface for the optional metadata functions from the ERC20 standard.
 *
 * _Available since v4.1._
 */
interface IERC20Metadata is IERC20 {
    /**
     * @dev Returns the name of the token.
     */
    function name() external view returns (string memory);

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

    /**
     * @dev Returns the decimals places of the token.
     */
    function decimals() external view returns (uint8);
}


// File @1inch/solidity-utils/contracts/libraries/[email protected]


pragma solidity ^0.8.0;





library UniERC20 {
    using SafeERC20 for IERC20;

    error InsufficientBalance();
    error ApproveCalledOnETH();
    error NotEnoughValue();
    error FromIsNotSender();
    error ToIsNotThis();
    error ETHTransferFailed();

    uint256 private constant _RAW_CALL_GAS_LIMIT = 5000;
    IERC20 private constant _ETH_ADDRESS = IERC20(0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE);
    IERC20 private constant _ZERO_ADDRESS = IERC20(address(0));

    function isETH(IERC20 token) internal pure returns (bool) {
        return (token == _ZERO_ADDRESS || token == _ETH_ADDRESS);
    }

    function uniBalanceOf(IERC20 token, address account) internal view returns (uint256) {
        if (isETH(token)) {
            return account.balance;
        } else {
            return token.balanceOf(account);
        }
    }

    /// @dev note that this function does nothing in case of zero amount
    function uniTransfer(IERC20 token, address payable to, uint256 amount) internal {
        if (amount > 0) {
            if (isETH(token)) {
                if (address(this).balance < amount) revert InsufficientBalance();
                // solhint-disable-next-line avoid-low-level-calls
                (bool success, ) = to.call{value: amount, gas: _RAW_CALL_GAS_LIMIT}("");
                if (!success) revert ETHTransferFailed();
            } else {
                token.safeTransfer(to, amount);
            }
        }
    }

    /// @dev note that this function does nothing in case of zero amount
    function uniTransferFrom(IERC20 token, address payable from, address to, uint256 amount) internal {
        if (amount > 0) {
            if (isETH(token)) {
                if (msg.value < amount) revert NotEnoughValue();
                if (from != msg.sender) revert FromIsNotSender();
                if (to != address(this)) revert ToIsNotThis();
                if (msg.value > amount) {
                    // Return remainder if exist
                    unchecked {
                        // solhint-disable-next-line avoid-low-level-calls
                        (bool success, ) = from.call{value: msg.value - amount, gas: _RAW_CALL_GAS_LIMIT}("");
                        if (!success) revert ETHTransferFailed();
                    }
                }
            } else {
                token.safeTransferFrom(from, to, amount);
            }
        }
    }

    function uniSymbol(IERC20 token) internal view returns(string memory) {
        return _uniDecode(token, IERC20Metadata.symbol.selector, IERC20MetadataUppercase.SYMBOL.selector);
    }

    function uniName(IERC20 token) internal view returns(string memory) {
        return _uniDecode(token, IERC20Metadata.name.selector, IERC20MetadataUppercase.NAME.selector);
    }

    function uniApprove(IERC20 token, address to, uint256 amount) internal {
        if (isETH(token)) revert ApproveCalledOnETH();

        token.forceApprove(to, amount);
    }

    /// 20K gas is provided to account for possible implementations of name/symbol
    /// (token implementation might be behind proxy or store the value in storage)
    function _uniDecode(IERC20 token, bytes4 lowerCaseSelector, bytes4 upperCaseSelector) private view returns(string memory result) {
        if (isETH(token)) {
            return "ETH";
        }

        (bool success, bytes memory data) = address(token).staticcall{ gas: 20000 }(
            abi.encodeWithSelector(lowerCaseSelector)
        );
        if (!success) {
            (success, data) = address(token).staticcall{ gas: 20000 }(
                abi.encodeWithSelector(upperCaseSelector)
            );
        }

        if (success && data.length >= 0x40) {
            (uint256 offset, uint256 len) = abi.decode(data, (uint256, uint256));
            if (offset == 0x20 && len > 0 && data.length == 0x40 + len) {
                /// @solidity memory-safe-assembly
                assembly { // solhint-disable-line no-inline-assembly
                    result := add(data, 0x20)
                }
                return result;
            }
        }

        if (success && data.length == 32) {
            uint256 len = 0;
            while (len < data.length && data[len] >= 0x20 && data[len] <= 0x7E) {
                unchecked {
                    len++;
                }
            }

            if (len > 0) {
                /// @solidity memory-safe-assembly
                assembly { // solhint-disable-line no-inline-assembly
                    mstore(data, len)
                }
                return string(data);
            }
        }

        return StringUtil.toHex(address(token));
    }
}


// File contracts/routers/GenericRouter.sol


pragma solidity 0.8.17;





contract GenericRouter is EthReceiver {
    using UniERC20 for IERC20;
    using SafeERC20 for IERC20;

    error ZeroMinReturn();
    error ZeroReturnAmount();

    uint256 private constant _PARTIAL_FILL = 1 << 0;
    uint256 private constant _REQUIRES_EXTRA_ETH = 1 << 1;

    struct SwapDescription {
        IERC20 srcToken;
        IERC20 dstToken;
        address payable srcReceiver;
        address payable dstReceiver;
        uint256 amount;
        uint256 minReturnAmount;
        uint256 flags;
    }

    /// @notice Performs a swap, delegating all calls encoded in `data` to `executor`. See tests for usage examples
    /// @dev router keeps 1 wei of every token on the contract balance for gas optimisations reasons. This affects first swap of every token by leaving 1 wei on the contract.
    /// @param executor Aggregation executor that executes calls described in `data`
    /// @param desc Swap description
    /// @param permit Should contain valid permit that can be used in `IERC20Permit.permit` calls.
    /// @param data Encoded calls that `caller` should execute in between of swaps
    /// @return returnAmount Resulting token amount
    /// @return spentAmount Source token amount
    function swap(
        IAggregationExecutor executor,
        SwapDescription calldata desc,
        bytes calldata permit,
        bytes calldata data
    )
        external
        payable
        returns (
            uint256 returnAmount,
            uint256 spentAmount
        )
    {
        if (desc.minReturnAmount == 0) revert ZeroMinReturn();

        IERC20 srcToken = desc.srcToken;
        IERC20 dstToken = desc.dstToken;

        bool srcETH = srcToken.isETH();
        if (desc.flags & _REQUIRES_EXTRA_ETH != 0) {
            if (msg.value <= (srcETH ? desc.amount : 0)) revert RouterErrors.InvalidMsgValue();
        } else {
            if (msg.value != (srcETH ? desc.amount : 0)) revert RouterErrors.InvalidMsgValue();
        }

        if (!srcETH) {
            if (permit.length > 0) {
                srcToken.safePermit(permit);
            }
            srcToken.safeTransferFrom(msg.sender, desc.srcReceiver, desc.amount);
        }

        _execute(executor, msg.sender, desc.amount, data);

        spentAmount = desc.amount;
        // we leave 1 wei on the router for gas optimisations reasons
        returnAmount = dstToken.uniBalanceOf(address(this));
        if (returnAmount == 0) revert ZeroReturnAmount();
        unchecked { returnAmount--; }

        if (desc.flags & _PARTIAL_FILL != 0) {
            uint256 unspentAmount = srcToken.uniBalanceOf(address(this));
            if (unspentAmount > 1) {
                // we leave 1 wei on the router for gas optimisations reasons
                unchecked { unspentAmount--; }
                spentAmount -= unspentAmount;
                srcToken.uniTransfer(payable(msg.sender), unspentAmount);
            }
            if (returnAmount * desc.amount < desc.minReturnAmount * spentAmount) revert RouterErrors.ReturnAmountIsNotEnough();
        } else {
            if (returnAmount < desc.minReturnAmount) revert RouterErrors.ReturnAmountIsNotEnough();
        }

        address payable dstReceiver = (desc.dstReceiver == address(0)) ? payable(msg.sender) : desc.dstReceiver;
        dstToken.uniTransfer(dstReceiver, returnAmount);
    }

    function _execute(
        IAggregationExecutor executor,
        address srcTokenOwner,
        uint256 inputAmount,
        bytes calldata data
    ) private {
        bytes4 executeSelector = executor.execute.selector;
        /// @solidity memory-safe-assembly
        assembly {  // solhint-disable-line no-inline-assembly
            let ptr := mload(0x40)

            mstore(ptr, executeSelector)
            mstore(add(ptr, 0x04), srcTokenOwner)
            calldatacopy(add(ptr, 0x24), data.offset, data.length)
            mstore(add(add(ptr, 0x24), data.length), inputAmount)

            if iszero(call(gas(), executor, callvalue(), ptr, add(0x44, data.length), 0, 0)) {
                returndatacopy(ptr, 0, returndatasize())
                revert(ptr, returndatasize())
            }
        }
    }
}


// File contracts/routers/UnoswapRouter.sol


pragma solidity 0.8.17;




contract UnoswapRouter is EthReceiver {
    using SafeERC20 for IERC20;

    error ReservesCallFailed();
    error SwapAmountTooLarge();

    bytes4 private constant _TRANSFER_FROM_CALL_SELECTOR = 0x23b872dd;
    bytes4 private constant _WETH_DEPOSIT_CALL_SELECTOR = 0xd0e30db0;
    bytes4 private constant _WETH_WITHDRAW_CALL_SELECTOR = 0x2e1a7d4d;
    bytes4 private constant _ERC20_TRANSFER_CALL_SELECTOR = 0xa9059cbb;
    uint256 private constant _ADDRESS_MASK =   0x000000000000000000000000ffffffffffffffffffffffffffffffffffffffff;
    uint256 private constant _REVERSE_MASK =   0x8000000000000000000000000000000000000000000000000000000000000000;
    uint256 private constant _WETH_MASK =      0x4000000000000000000000000000000000000000000000000000000000000000;
    uint256 private constant _NUMERATOR_MASK = 0x0000000000000000ffffffff0000000000000000000000000000000000000000;
    /// @dev WETH address is network-specific and needs to be changed before deployment.
    /// It can not be moved to immutable as immutables are not supported in assembly
    address private constant _WETH = 0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2;
    bytes4 private constant _UNISWAP_PAIR_RESERVES_CALL_SELECTOR = 0x0902f1ac;
    bytes4 private constant _UNISWAP_PAIR_SWAP_CALL_SELECTOR = 0x022c0d9f;
    uint256 private constant _DENOMINATOR = 1e9;
    uint256 private constant _NUMERATOR_OFFSET = 160;
    uint256 private constant _MAX_SWAP_AMOUNT = (1 << 112) - 1;  // type(uint112).max;

    /// @notice Same as `unoswapTo` but calls permit first,
    /// allowing to approve token spending and make a swap in one transaction.
    /// @param recipient Address that will receive swapped funds
    /// @param srcToken Source token
    /// @param amount Amount of source tokens to swap
    /// @param minReturn Minimal allowed returnAmount to make transaction commit
    /// @param pools Pools chain used for swaps. Pools src and dst tokens should match to make swap happen
    /// @param permit Should contain valid permit that can be used in `IERC20Permit.permit` calls.
    /// See tests for examples
    function unoswapToWithPermit(
        address payable recipient,
        IERC20 srcToken,
        uint256 amount,
        uint256 minReturn,
        uint256[] calldata pools,
        bytes calldata permit
    ) external returns(uint256 returnAmount) {
        srcToken.safePermit(permit);
        return _unoswap(recipient, srcToken, amount, minReturn, pools);
    }

    /// @notice Performs swap using Uniswap exchange. Wraps and unwraps ETH if required.
    /// Sending non-zero `msg.value` for anything but ETH swaps is prohibited
    /// @param recipient Address that will receive swapped funds
    /// @param srcToken Source token
    /// @param amount Amount of source tokens to swap
    /// @param minReturn Minimal allowed returnAmount to make transaction commit
    /// @param pools Pools chain used for swaps. Pools src and dst tokens should match to make swap happen
    function unoswapTo(
        address payable recipient,
        IERC20 srcToken,
        uint256 amount,
        uint256 minReturn,
        uint256[] calldata pools
    ) external payable returns(uint256 returnAmount) {
        return _unoswap(recipient, srcToken, amount, minReturn, pools);
    }

    /// @notice Performs swap using Uniswap exchange. Wraps and unwraps ETH if required.
    /// Sending non-zero `msg.value` for anything but ETH swaps is prohibited
    /// @param srcToken Source token
    /// @param amount Amount of source tokens to swap
    /// @param minReturn Minimal allowed returnAmount to make transaction commit
    /// @param pools Pools chain used for swaps. Pools src and dst tokens should match to make swap happen
    function unoswap(
        IERC20 srcToken,
        uint256 amount,
        uint256 minReturn,
        uint256[] calldata pools
    ) external payable returns(uint256 returnAmount) {
        return _unoswap(payable(msg.sender), srcToken, amount, minReturn, pools);
    }

    function _unoswap(
        address payable recipient,
        IERC20 srcToken,
        uint256 amount,
        uint256 minReturn,
        uint256[] calldata pools
    ) private returns(uint256 returnAmount) {
        assembly {  // solhint-disable-line no-inline-assembly
            function reRevert() {
                returndatacopy(0, 0, returndatasize())
                revert(0, returndatasize())
            }

            function validateERC20Transfer(status) {
                if iszero(status) {
                    reRevert()
                }
                let success := or(
                    iszero(returndatasize()),                       // empty return data
                    and(gt(returndatasize(), 31), eq(mload(0), 1))  // true in return data
                )
                if iszero(success) {
                    mstore(0, 0xf27f64e400000000000000000000000000000000000000000000000000000000)  // ERC20TransferFailed()
                    revert(0, 4)
                }
            }

            function swap(emptyPtr, swapAmount, pair, reversed, numerator, to) -> ret {
                mstore(emptyPtr, _UNISWAP_PAIR_RESERVES_CALL_SELECTOR)
                if iszero(staticcall(gas(), pair, emptyPtr, 0x4, emptyPtr, 0x40)) {
                    reRevert()
                }
                if iszero(eq(returndatasize(), 0x60)) {
                    mstore(0, 0x85cd58dc00000000000000000000000000000000000000000000000000000000)  // ReservesCallFailed()
                    revert(0, 4)
                }

                let reserve0 := mload(emptyPtr)
                let reserve1 := mload(add(emptyPtr, 0x20))
                if reversed {
                    let tmp := reserve0
                    reserve0 := reserve1
                    reserve1 := tmp
                }
                // this will not overflow as reserve0, reserve1 and ret fit to 112 bit and numerator and _DENOMINATOR fit to 32 bit
                ret := mul(swapAmount, numerator)
                ret := div(mul(ret, reserve1), add(ret, mul(reserve0, _DENOMINATOR)))

                mstore(emptyPtr, _UNISWAP_PAIR_SWAP_CALL_SELECTOR)
                reversed := iszero(reversed)
                mstore(add(emptyPtr, 0x04), mul(ret, iszero(reversed)))
                mstore(add(emptyPtr, 0x24), mul(ret, reversed))
                mstore(add(emptyPtr, 0x44), to)
                mstore(add(emptyPtr, 0x64), 0x80)
                mstore(add(emptyPtr, 0x84), 0)
                if iszero(call(gas(), pair, 0, emptyPtr, 0xa4, 0, 0)) {
                    reRevert()
                }
            }

            // make sure that input amount fits in 112 bit
            if gt(amount, _MAX_SWAP_AMOUNT) {
                mstore(0, 0xcf0b4d3a00000000000000000000000000000000000000000000000000000000)  // SwapAmountTooLarge()
                revert(0, 4)
            }

            let emptyPtr := mload(0x40)
            mstore(0x40, add(emptyPtr, 0xc0))

            let poolsEndOffset := add(pools.offset, shl(5, pools.length))
            let rawPair := calldataload(pools.offset)
            switch srcToken
            case 0 {
                if iszero(eq(amount, callvalue())) {
                    mstore(0, 0x1841b4e100000000000000000000000000000000000000000000000000000000)  // InvalidMsgValue()
                    revert(0, 4)
                }

                mstore(emptyPtr, _WETH_DEPOSIT_CALL_SELECTOR)
                if iszero(call(gas(), _WETH, amount, emptyPtr, 0x4, 0, 0)) {
                    reRevert()
                }

                mstore(emptyPtr, _ERC20_TRANSFER_CALL_SELECTOR)
                mstore(add(emptyPtr, 0x4), and(rawPair, _ADDRESS_MASK))
                mstore(add(emptyPtr, 0x24), amount)
                if iszero(call(gas(), _WETH, 0, emptyPtr, 0x44, 0, 0)) {
                    reRevert()
                }
            }
            default {
                if callvalue() {
                    mstore(0, 0x1841b4e100000000000000000000000000000000000000000000000000000000)  // InvalidMsgValue()
                    revert(0, 4)
                }

                mstore(emptyPtr, _TRANSFER_FROM_CALL_SELECTOR)
                mstore(add(emptyPtr, 0x4), caller())
                mstore(add(emptyPtr, 0x24), and(rawPair, _ADDRESS_MASK))
                mstore(add(emptyPtr, 0x44), amount)
                validateERC20Transfer(
                    call(gas(), srcToken, 0, emptyPtr, 0x64, 0, 0x20)
                )
            }

            returnAmount := amount

            for {let i := add(pools.offset, 0x20)} lt(i, poolsEndOffset) {i := add(i, 0x20)} {
                let nextRawPair := calldataload(i)

                returnAmount := swap(
                    emptyPtr,
                    returnAmount,
                    and(rawPair, _ADDRESS_MASK),
                    and(rawPair, _REVERSE_MASK),
                    shr(_NUMERATOR_OFFSET, and(rawPair, _NUMERATOR_MASK)),
                    and(nextRawPair, _ADDRESS_MASK)
                )

                rawPair := nextRawPair
            }

            switch and(rawPair, _WETH_MASK)
            case 0 {
                returnAmount := swap(
                    emptyPtr,
                    returnAmount,
                    and(rawPair, _ADDRESS_MASK),
                    and(rawPair, _REVERSE_MASK),
                    shr(_NUMERATOR_OFFSET, and(rawPair, _NUMERATOR_MASK)),
                    recipient
                )
            }
            default {
                returnAmount := swap(
                    emptyPtr,
                    returnAmount,
                    and(rawPair, _ADDRESS_MASK),
                    and(rawPair, _REVERSE_MASK),
                    shr(_NUMERATOR_OFFSET, and(rawPair, _NUMERATOR_MASK)),
                    address()
                )

                mstore(emptyPtr, _WETH_WITHDRAW_CALL_SELECTOR)
                mstore(add(emptyPtr, 0x04), returnAmount)
                if iszero(call(gas(), _WETH, 0, emptyPtr, 0x24, 0, 0)) {
                    reRevert()
                }

                if iszero(call(gas(), recipient, returnAmount, 0, 0, 0, 0)) {
                    reRevert()
                }
            }
        }
        if (returnAmount < minReturn) revert RouterErrors.ReturnAmountIsNotEnough();
    }
}


// File contracts/interfaces/IUniswapV3Pool.sol

pragma solidity 0.8.17;

interface IUniswapV3Pool {
    /// @notice Swap token0 for token1, or token1 for token0
    /// @dev The caller of this method receives a callback in the form of IUniswapV3SwapCallback#uniswapV3SwapCallback
    /// @param recipient The address to receive the output of the swap
    /// @param zeroForOne The direction of the swap, true for token0 to token1, false for token1 to token0
    /// @param amountSpecified The amount of the swap, which implicitly configures the swap as exact input (positive), or exact output (negative)
    /// @param sqrtPriceLimitX96 The Q64.96 sqrt price limit. If zero for one, the price cannot be less than this
    /// value after the swap. If one for zero, the price cannot be greater than this value after the swap
    /// @param data Any data to be passed through to the callback
    /// @return amount0 The delta of the balance of token0 of the pool, exact when negative, minimum when positive
    /// @return amount1 The delta of the balance of token1 of the pool, exact when negative, minimum when positive
    function swap(
        address recipient,
        bool zeroForOne,
        int256 amountSpecified,
        uint160 sqrtPriceLimitX96,
        bytes calldata data
    ) external returns (int256 amount0, int256 amount1);

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

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

    /// @notice The pool's fee in hundredths of a bip, i.e. 1e-6
    /// @return The fee
    function fee() external view returns (uint24);
}


// File contracts/interfaces/IUniswapV3SwapCallback.sol

pragma solidity 0.8.17;

/// @title Callback for IUniswapV3PoolActions#swap
/// @notice Any contract that calls IUniswapV3PoolActions#swap must implement this interface
interface IUniswapV3SwapCallback {
    /// @notice Called to `msg.sender` after executing a swap via IUniswapV3Pool#swap.
    /// @dev In the implementation you must pay the pool tokens owed for the swap.
    /// The caller of this method must be checked to be a UniswapV3Pool deployed by the canonical UniswapV3Factory.
    /// amount0Delta and amount1Delta can both be 0 if no tokens were swapped.
    /// @param amount0Delta The amount of token0 that was sent (negative) or must be received (positive) by the pool by
    /// the end of the swap. If positive, the callback must send that amount of token0 to the pool.
    /// @param amount1Delta The amount of token1 that was sent (negative) or must be received (positive) by the pool by
    /// the end of the swap. If positive, the callback must send that amount of token1 to the pool.
    /// @param data Any data passed through by the caller via the IUniswapV3PoolActions#swap call
    function uniswapV3SwapCallback(
        int256 amount0Delta,
        int256 amount1Delta,
        bytes calldata data
    ) external;
}


// File @openzeppelin/contracts/utils/[email protected]

// OpenZeppelin Contracts (last updated v4.7.0) (utils/Address.sol)

pragma solidity ^0.8.1;

/**
 * @dev Collection of functions related to the address type
 */
library Address {
    /**
     * @dev Returns true if `account` is a contract.
     *
     * [IMPORTANT]
     * ====
     * It is unsafe to assume that an address for which this function returns
     * false is an externally-owned account (EOA) and not a contract.
     *
     * Among others, `isContract` will return false for the following
     * types of addresses:
     *
     *  - an externally-owned account
     *  - a contract in construction
     *  - an address where a contract will be created
     *  - an address where a contract lived, but was destroyed
     * ====
     *
     * [IMPORTANT]
     * ====
     * You shouldn't rely on `isContract` to protect against flash loan attacks!
     *
     * Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets
     * like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract
     * constructor.
     * ====
     */
    function isContract(address account) internal view returns (bool) {
        // This method relies on extcodesize/address.code.length, which returns 0
        // for contracts in construction, since the code is only stored at the end
        // of the constructor execution.

        return account.code.length > 0;
    }

    /**
     * @dev Replacement for Solidity's `transfer`: sends `amount` wei to
     * `recipient`, forwarding all available gas and reverting on errors.
     *
     * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
     * of certain opcodes, possibly making contracts go over the 2300 gas limit
     * imposed by `transfer`, making them unable to receive funds via
     * `transfer`. {sendValue} removes this limitation.
     *
     * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
     *
     * IMPORTANT: because control is transferred to `recipient`, care must be
     * taken to not create reentrancy vulnerabilities. Consider using
     * {ReentrancyGuard} or the
     * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
     */
    function sendValue(address payable recipient, uint256 amount) internal {
        require(address(this).balance >= amount, "Address: insufficient balance");

        (bool success, ) = recipient.call{value: amount}("");
        require(success, "Address: unable to send value, recipient may have reverted");
    }

    /**
     * @dev Performs a Solidity function call using a low level `call`. A
     * plain `call` is an unsafe replacement for a function call: use this
     * function instead.
     *
     * If `target` reverts with a revert reason, it is bubbled up by this
     * function (like regular Solidity function calls).
     *
     * Returns the raw returned data. To convert to the expected return value,
     * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
     *
     * Requirements:
     *
     * - `target` must be a contract.
     * - calling `target` with `data` must not revert.
     *
     * _Available since v3.1._
     */
    function functionCall(address target, bytes memory data) internal returns (bytes memory) {
        return 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
                /// @solidity memory-safe-assembly
                assembly {
                    let returndata_size := mload(returndata)
                    revert(add(32, returndata), returndata_size)
                }
            } else {
                revert(errorMessage);
            }
        }
    }
}


// File @openzeppelin/contracts/utils/math/[email protected]

// OpenZeppelin Contracts (last updated v4.7.0) (utils/math/SafeCast.sol)

pragma solidity ^0.8.0;

/**
 * @dev Wrappers over Solidity's uintXX/intXX casting operators with added overflow
 * checks.
 *
 * Downcasting from uint256/int256 in Solidity does not revert on overflow. This can
 * easily result in undesired exploitation or bugs, since developers usually
 * assume that overflows raise errors. `SafeCast` restores this intuition by
 * reverting the transaction when such an operation overflows.
 *
 * Using this library instead of the unchecked operations eliminates an entire
 * class of bugs, so it's recommended to use it always.
 *
 * Can be combined with {SafeMath} and {SignedSafeMath} to extend it to smaller types, by performing
 * all math on `uint256` and `int256` and then downcasting.
 */
library SafeCast {
    /**
     * @dev Returns the downcasted uint248 from uint256, reverting on
     * overflow (when the input is greater than largest uint248).
     *
     * Counterpart to Solidity's `uint248` operator.
     *
     * Requirements:
     *
     * - input must fit into 248 bits
     *
     * _Available since v4.7._
     */
    function toUint248(uint256 value) internal pure returns (uint248) {
        require(value <= type(uint248).max, "SafeCast: value doesn't fit in 248 bits");
        return uint248(value);
    }

    /**
     * @dev Returns the downcasted uint240 from uint256, reverting on
     * overflow (when the input is greater than largest uint240).
     *
     * Counterpart to Solidity's `uint240` operator.
     *
     * Requirements:
     *
     * - input must fit into 240 bits
     *
     * _Available since v4.7._
     */
    function toUint240(uint256 value) internal pure returns (uint240) {
        require(value <= type(uint240).max, "SafeCast: value doesn't fit in 240 bits");
        return uint240(value);
    }

    /**
     * @dev Returns the downcasted uint232 from uint256, reverting on
     * overflow (when the input is greater than largest uint232).
     *
     * Counterpart to Solidity's `uint232` operator.
     *
     * Requirements:
     *
     * - input must fit into 232 bits
     *
     * _Available since v4.7._
     */
    function toUint232(uint256 value) internal pure returns (uint232) {
        require(value <= type(uint232).max, "SafeCast: value doesn't fit in 232 bits");
        return uint232(value);
    }

    /**
     * @dev Returns the downcasted uint224 from uint256, reverting on
     * overflow (when the input is greater than largest uint224).
     *
     * Counterpart to Solidity's `uint224` operator.
     *
     * Requirements:
     *
     * - input must fit into 224 bits
     *
     * _Available since v4.2._
     */
    function toUint224(uint256 value) internal pure returns (uint224) {
        require(value <= type(uint224).max, "SafeCast: value doesn't fit in 224 bits");
        return uint224(value);
    }

    /**
     * @dev Returns the downcasted uint216 from uint256, reverting on
     * overflow (when the input is greater than largest uint216).
     *
     * Counterpart to Solidity's `uint216` operator.
     *
     * Requirements:
     *
     * - input must fit into 216 bits
     *
     * _Available since v4.7._
     */
    function toUint216(uint256 value) internal pure returns (uint216) {
        require(value <= type(uint216).max, "SafeCast: value doesn't fit in 216 bits");
        return uint216(value);
    }

    /**
     * @dev Returns the downcasted uint208 from uint256, reverting on
     * overflow (when the input is greater than largest uint208).
     *
     * Counterpart to Solidity's `uint208` operator.
     *
     * Requirements:
     *
     * - input must fit into 208 bits
     *
     * _Available since v4.7._
     */
    function toUint208(uint256 value) internal pure returns (uint208) {
        require(value <= type(uint208).max, "SafeCast: value doesn't fit in 208 bits");
        return uint208(value);
    }

    /**
     * @dev Returns the downcasted uint200 from uint256, reverting on
     * overflow (when the input is greater than largest uint200).
     *
     * Counterpart to Solidity's `uint200` operator.
     *
     * Requirements:
     *
     * - input must fit into 200 bits
     *
     * _Available since v4.7._
     */
    function toUint200(uint256 value) internal pure returns (uint200) {
        require(value <= type(uint200).max, "SafeCast: value doesn't fit in 200 bits");
        return uint200(value);
    }

    /**
     * @dev Returns the downcasted uint192 from uint256, reverting on
     * overflow (when the input is greater than largest uint192).
     *
     * Counterpart to Solidity's `uint192` operator.
     *
     * Requirements:
     *
     * - input must fit into 192 bits
     *
     * _Available since v4.7._
     */
    function toUint192(uint256 value) internal pure returns (uint192) {
        require(value <= type(uint192).max, "SafeCast: value doesn't fit in 192 bits");
        return uint192(value);
    }

    /**
     * @dev Returns the downcasted uint184 from uint256, reverting on
     * overflow (when the input is greater than largest uint184).
     *
     * Counterpart to Solidity's `uint184` operator.
     *
     * Requirements:
     *
     * - input must fit into 184 bits
     *
     * _Available since v4.7._
     */
    function toUint184(uint256 value) internal pure returns (uint184) {
        require(value <= type(uint184).max, "SafeCast: value doesn't fit in 184 bits");
        return uint184(value);
    }

    /**
     * @dev Returns the downcasted uint176 from uint256, reverting on
     * overflow (when the input is greater than largest uint176).
     *
     * Counterpart to Solidity's `uint176` operator.
     *
     * Requirements:
     *
     * - input must fit into 176 bits
     *
     * _Available since v4.7._
     */
    function toUint176(uint256 value) internal pure returns (uint176) {
        require(value <= type(uint176).max, "SafeCast: value doesn't fit in 176 bits");
        return uint176(value);
    }

    /**
     * @dev Returns the downcasted uint168 from uint256, reverting on
     * overflow (when the input is greater than largest uint168).
     *
     * Counterpart to Solidity's `uint168` operator.
     *
     * Requirements:
     *
     * - input must fit into 168 bits
     *
     * _Available since v4.7._
     */
    function toUint168(uint256 value) internal pure returns (uint168) {
        require(value <= type(uint168).max, "SafeCast: value doesn't fit in 168 bits");
        return uint168(value);
    }

    /**
     * @dev Returns the downcasted uint160 from uint256, reverting on
     * overflow (when the input is greater than largest uint160).
     *
     * Counterpart to Solidity's `uint160` operator.
     *
     * Requirements:
     *
     * - input must fit into 160 bits
     *
     * _Available since v4.7._
     */
    function toUint160(uint256 value) internal pure returns (uint160) {
        require(value <= type(uint160).max, "SafeCast: value doesn't fit in 160 bits");
        return uint160(value);
    }

    /**
     * @dev Returns the downcasted uint152 from uint256, reverting on
     * overflow (when the input is greater than largest uint152).
     *
     * Counterpart to Solidity's `uint152` operator.
     *
     * Requirements:
     *
     * - input must fit into 152 bits
     *
     * _Available since v4.7._
     */
    function toUint152(uint256 value) internal pure returns (uint152) {
        require(value <= type(uint152).max, "SafeCast: value doesn't fit in 152 bits");
        return uint152(value);
    }

    /**
     * @dev Returns the downcasted uint144 from uint256, reverting on
     * overflow (when the input is greater than largest uint144).
     *
     * Counterpart to Solidity's `uint144` operator.
     *
     * Requirements:
     *
     * - input must fit into 144 bits
     *
     * _Available since v4.7._
     */
    function toUint144(uint256 value) internal pure returns (uint144) {
        require(value <= type(uint144).max, "SafeCast: value doesn't fit in 144 bits");
        return uint144(value);
    }

    /**
     * @dev Returns the downcasted uint136 from uint256, reverting on
     * overflow (when the input is greater than largest uint136).
     *
     * Counterpart to Solidity's `uint136` operator.
     *
     * Requirements:
     *
     * - input must fit into 136 bits
     *
     * _Available since v4.7._
     */
    function toUint136(uint256 value) internal pure returns (uint136) {
        require(value <= type(uint136).max, "SafeCast: value doesn't fit in 136 bits");
        return uint136(value);
    }

    /**
     * @dev Returns the downcasted uint128 from uint256, reverting on
     * overflow (when the input is greater than largest uint128).
     *
     * Counterpart to Solidity's `uint128` operator.
     *
     * Requirements:
     *
     * - input must fit into 128 bits
     *
     * _Available since v2.5._
     */
    function toUint128(uint256 value) internal pure returns (uint128) {
        require(value <= type(uint128).max, "SafeCast: value doesn't fit in 128 bits");
        return uint128(value);
    }

    /**
     * @dev Returns the downcasted uint120 from uint256, reverting on
     * overflow (when the input is greater than largest uint120).
     *
     * Counterpart to Solidity's `uint120` operator.
     *
     * Requirements:
     *
     * - input must fit into 120 bits
     *
     * _Available since v4.7._
     */
    function toUint120(uint256 value) internal pure returns (uint120) {
        require(value <= type(uint120).max, "SafeCast: value doesn't fit in 120 bits");
        return uint120(value);
    }

    /**
     * @dev Returns the downcasted uint112 from uint256, reverting on
     * overflow (when the input is greater than largest uint112).
     *
     * Counterpart to Solidity's `uint112` operator.
     *
     * Requirements:
     *
     * - input must fit into 112 bits
     *
     * _Available since v4.7._
     */
    function toUint112(uint256 value) internal pure returns (uint112) {
        require(value <= type(uint112).max, "SafeCast: value doesn't fit in 112 bits");
        return uint112(value);
    }

    /**
     * @dev Returns the downcasted uint104 from uint256, reverting on
     * overflow (when the input is greater than largest uint104).
     *
     * Counterpart to Solidity's `uint104` operator.
     *
     * Requirements:
     *
     * - input must fit into 104 bits
     *
     * _Available since v4.7._
     */
    function toUint104(uint256 value) internal pure returns (uint104) {
        require(value <= type(uint104).max, "SafeCast: value doesn't fit in 104 bits");
        return uint104(value);
    }

    /**
     * @dev Returns the downcasted uint96 from uint256, reverting on
     * overflow (when the input is greater than largest uint96).
     *
     * Counterpart to Solidity's `uint96` operator.
     *
     * Requirements:
     *
     * - input must fit into 96 bits
     *
     * _Available since v4.2._
     */
    function toUint96(uint256 value) internal pure returns (uint96) {
        require(value <= type(uint96).max, "SafeCast: value doesn't fit in 96 bits");
        return uint96(value);
    }

    /**
     * @dev Returns the downcasted uint88 from uint256, reverting on
     * overflow (when the input is greater than largest uint88).
     *
     * Counterpart to Solidity's `uint88` operator.
     *
     * Requirements:
     *
     * - input must fit into 88 bits
     *
     * _Available since v4.7._
     */
    function toUint88(uint256 value) internal pure returns (uint88) {
        require(value <= type(uint88).max, "SafeCast: value doesn't fit in 88 bits");
        return uint88(value);
    }

    /**
     * @dev Returns the downcasted uint80 from uint256, reverting on
     * overflow (when the input is greater than largest uint80).
     *
     * Counterpart to Solidity's `uint80` operator.
     *
     * Requirements:
     *
     * - input must fit into 80 bits
     *
     * _Available since v4.7._
     */
    function toUint80(uint256 value) internal pure returns (uint80) {
        require(value <= type(uint80).max, "SafeCast: value doesn't fit in 80 bits");
        return uint80(value);
    }

    /**
     * @dev Returns the downcasted uint72 from uint256, reverting on
     * overflow (when the input is greater than largest uint72).
     *
     * Counterpart to Solidity's `uint72` operator.
     *
     * Requirements:
     *
     * - input must fit into 72 bits
     *
     * _Available since v4.7._
     */
    function toUint72(uint256 value) internal pure returns (uint72) {
        require(value <= type(uint72).max, "SafeCast: value doesn't fit in 72 bits");
        return uint72(value);
    }

    /**
     * @dev Returns the downcasted uint64 from uint256, reverting on
     * overflow (when the input is greater than largest uint64).
     *
     * Counterpart to Solidity's `uint64` operator.
     *
     * Requirements:
     *
     * - input must fit into 64 bits
     *
     * _Available since v2.5._
     */
    function toUint64(uint256 value) internal pure returns (uint64) {
        require(value <= type(uint64).max, "SafeCast: value doesn't fit in 64 bits");
        return uint64(value);
    }

    /**
     * @dev Returns the downcasted uint56 from uint256, reverting on
     * overflow (when the input is greater than largest uint56).
     *
     * Counterpart to Solidity's `uint56` operator.
     *
     * Requirements:
     *
     * - input must fit into 56 bits
     *
     * _Available since v4.7._
     */
    function toUint56(uint256 value) internal pure returns (uint56) {
        require(value <= type(uint56).max, "SafeCast: value doesn't fit in 56 bits");
        return uint56(value);
    }

    /**
     * @dev Returns the downcasted uint48 from uint256, reverting on
     * overflow (when the input is greater than largest uint48).
     *
     * Counterpart to Solidity's `uint48` operator.
     *
     * Requirements:
     *
     * - input must fit into 48 bits
     *
     * _Available since v4.7._
     */
    function toUint48(uint256 value) internal pure returns (uint48) {
        require(value <= type(uint48).max, "SafeCast: value doesn't fit in 48 bits");
        return uint48(value);
    }

    /**
     * @dev Returns the downcasted uint40 from uint256, reverting on
     * overflow (when the input is greater than largest uint40).
     *
     * Counterpart to Solidity's `uint40` operator.
     *
     * Requirements:
     *
     * - input must fit into 40 bits
     *
     * _Available since v4.7._
     */
    function toUint40(uint256 value) internal pure returns (uint40) {
        require(value <= type(uint40).max, "SafeCast: value doesn't fit in 40 bits");
        return uint40(value);
    }

    /**
     * @dev Returns the downcasted uint32 from uint256, reverting on
     * overflow (when the input is greater than largest uint32).
     *
     * Counterpart to Solidity's `uint32` operator.
     *
     * Requirements:
     *
     * - input must fit into 32 bits
     *
     * _Available since v2.5._
     */
    function toUint32(uint256 value) internal pure returns (uint32) {
        require(value <= type(uint32).max, "SafeCast: value doesn't fit in 32 bits");
        return uint32(value);
    }

    /**
     * @dev Returns the downcasted uint24 from uint256, reverting on
     * overflow (when the input is greater than largest uint24).
     *
     * Counterpart to Solidity's `uint24` operator.
     *
     * Requirements:
     *
     * - input must fit into 24 bits
     *
     * _Available since v4.7._
     */
    function toUint24(uint256 value) internal pure returns (uint24) {
        require(value <= type(uint24).max, "SafeCast: value doesn't fit in 24 bits");
        return uint24(value);
    }

    /**
     * @dev Returns the downcasted uint16 from uint256, reverting on
     * overflow (when the input is greater than largest uint16).
     *
     * Counterpart to Solidity's `uint16` operator.
     *
     * Requirements:
     *
     * - input must fit into 16 bits
     *
     * _Available since v2.5._
     */
    function toUint16(uint256 value) internal pure returns (uint16) {
        require(value <= type(uint16).max, "SafeCast: value doesn't fit in 16 bits");
        return uint16(value);
    }

    /**
     * @dev Returns the downcasted uint8 from uint256, reverting on
     * overflow (when the input is greater than largest uint8).
     *
     * Counterpart to Solidity's `uint8` operator.
     *
     * Requirements:
     *
     * - input must fit into 8 bits
     *
     * _Available since v2.5._
     */
    function toUint8(uint256 value) internal pure returns (uint8) {
        require(value <= type(uint8).max, "SafeCast: value doesn't fit in 8 bits");
        return uint8(value);
    }

    /**
     * @dev Converts a signed int256 into an unsigned uint256.
     *
     * Requirements:
     *
     * - input must be greater than or equal to 0.
     *
     * _Available since v3.0._
     */
    function toUint256(int256 value) internal pure returns (uint256) {
        require(value >= 0, "SafeCast: value must be positive");
        return uint256(value);
    }

    /**
     * @dev Returns the downcasted int248 from int256, reverting on
     * overflow (when the input is less than smallest int248 or
     * greater than largest int248).
     *
     * Counterpart to Solidity's `int248` operator.
     *
     * Requirements:
     *
     * - input must fit into 248 bits
     *
     * _Available since v4.7._
     */
    function toInt248(int256 value) internal pure returns (int248) {
        require(value >= type(int248).min && value <= type(int248).max, "SafeCast: value doesn't fit in 248 bits");
        return int248(value);
    }

    /**
     * @dev Returns the downcasted int240 from int256, reverting on
     * overflow (when the input is less than smallest int240 or
     * greater than largest int240).
     *
     * Counterpart to Solidity's `int240` operator.
     *
     * Requirements:
     *
     * - input must fit into 240 bits
     *
     * _Available since v4.7._
     */
    function toInt240(int256 value) internal pure returns (int240) {
        require(value >= type(int240).min && value <= type(int240).max, "SafeCast: value doesn't fit in 240 bits");
        return int240(value);
    }

    /**
     * @dev Returns the downcasted int232 from int256, reverting on
     * overflow (when the input is less than smallest int232 or
     * greater than largest int232).
     *
     * Counterpart to Solidity's `int232` operator.
     *
     * Requirements:
     *
     * - input must fit into 232 bits
     *
     * _Available since v4.7._
     */
    function toInt232(int256 value) internal pure returns (int232) {
        require(value >= type(int232).min && value <= type(int232).max, "SafeCast: value doesn't fit in 232 bits");
        return int232(value);
    }

    /**
     * @dev Returns the downcasted int224 from int256, reverting on
     * overflow (when the input is less than smallest int224 or
     * greater than largest int224).
     *
     * Counterpart to Solidity's `int224` operator.
     *
     * Requirements:
     *
     * - input must fit into 224 bits
     *
     * _Available since v4.7._
     */
    function toInt224(int256 value) internal pure returns (int224) {
        require(value >= type(int224).min && value <= type(int224).max, "SafeCast: value doesn't fit in 224 bits");
        return int224(value);
    }

    /**
     * @dev Returns the downcasted int216 from int256, reverting on
     * overflow (when the input is less than smallest int216 or
     * greater than largest int216).
     *
     * Counterpart to Solidity's `int216` operator.
     *
     * Requirements:
     *
     * - input must fit into 216 bits
     *
     * _Available since v4.7._
     */
    function toInt216(int256 value) internal pure returns (int216) {
        require(value >= type(int216).min && value <= type(int216).max, "SafeCast: value doesn't fit in 216 bits");
        return int216(value);
    }

    /**
     * @dev Returns the downcasted int208 from int256, reverting on
     * overflow (when the input is less than smallest int208 or
     * greater than largest int208).
     *
     * Counterpart to Solidity's `int208` operator.
     *
     * Requirements:
     *
     * - input must fit into 208 bits
     *
     * _Available since v4.7._
     */
    function toInt208(int256 value) internal pure returns (int208) {
        require(value >= type(int208).min && value <= type(int208).max, "SafeCast: value doesn't fit in 208 bits");
        return int208(value);
    }

    /**
     * @dev Returns the downcasted int200 from int256, reverting on
     * overflow (when the input is less than smallest int200 or
     * greater than largest int200).
     *
     * Counterpart to Solidity's `int200` operator.
     *
     * Requirements:
     *
     * - input must fit into 200 bits
     *
     * _Available since v4.7._
     */
    function toInt200(int256 value) internal pure returns (int200) {
        require(value >= type(int200).min && value <= type(int200).max, "SafeCast: value doesn't fit in 200 bits");
        return int200(value);
    }

    /**
     * @dev Returns the downcasted int192 from int256, reverting on
     * overflow (when the input is less than smallest int192 or
     * greater than largest int192).
     *
     * Counterpart to Solidity's `int192` operator.
     *
     * Requirements:
     *
     * - input must fit into 192 bits
     *
     * _Available since v4.7._
     */
    function toInt192(int256 value) internal pure returns (int192) {
        require(value >= type(int192).min && value <= type(int192).max, "SafeCast: value doesn't fit in 192 bits");
        return int192(value);
    }

    /**
     * @dev Returns the downcasted int184 from int256, reverting on
     * overflow (when the input is less than smallest int184 or
     * greater than largest int184).
     *
     * Counterpart to Solidity's `int184` operator.
     *
     * Requirements:
     *
     * - input must fit into 184 bits
     *
     * _Available since v4.7._
     */
    function toInt184(int256 value) internal pure returns (int184) {
        require(value >= type(int184).min && value <= type(int184).max, "SafeCast: value doesn't fit in 184 bits");
        return int184(value);
    }

    /**
     * @dev Returns the downcasted int176 from int256, reverting on
     * overflow (when the input is less than smallest int176 or
     * greater than largest int176).
     *
     * Counterpart to Solidity's `int176` operator.
     *
     * Requirements:
     *
     * - input must fit into 176 bits
     *
     * _Available since v4.7._
     */
    function toInt176(int256 value) internal pure returns (int176) {
        require(value >= type(int176).min && value <= type(int176).max, "SafeCast: value doesn't fit in 176 bits");
        return int176(value);
    }

    /**
     * @dev Returns the downcasted int168 from int256, reverting on
     * overflow (when the input is less than smallest int168 or
     * greater than largest int168).
     *
     * Counterpart to Solidity's `int168` operator.
     *
     * Requirements:
     *
     * - input must fit into 168 bits
     *
     * _Available since v4.7._
     */
    function toInt168(int256 value) internal pure returns (int168) {
        require(value >= type(int168).min && value <= type(int168).max, "SafeCast: value doesn't fit in 168 bits");
        return int168(value);
    }

    /**
     * @dev Returns the downcasted int160 from int256, reverting on
     * overflow (when the input is less than smallest int160 or
     * greater than largest int160).
     *
     * Counterpart to Solidity's `int160` operator.
     *
     * Requirements:
     *
     * - input must fit into 160 bits
     *
     * _Available since v4.7._
     */
    function toInt160(int256 value) internal pure returns (int160) {
        require(value >= type(int160).min && value <= type(int160).max, "SafeCast: value doesn't fit in 160 bits");
        return int160(value);
    }

    /**
     * @dev Returns the downcasted int152 from int256, reverting on
     * overflow (when the input is less than smallest int152 or
     * greater than largest int152).
     *
     * Counterpart to Solidity's `int152` operator.
     *
     * Requirements:
     *
     * - input must fit into 152 bits
     *
     * _Available since v4.7._
     */
    function toInt152(int256 value) internal pure returns (int152) {
        require(value >= type(int152).min && value <= type(int152).max, "SafeCast: value doesn't fit in 152 bits");
        return int152(value);
    }

    /**
     * @dev Returns the downcasted int144 from int256, reverting on
     * overflow (when the input is less than smallest int144 or
     * greater than largest int144).
     *
     * Counterpart to Solidity's `int144` operator.
     *
     * Requirements:
     *
     * - input must fit into 144 bits
     *
     * _Available since v4.7._
     */
    function toInt144(int256 value) internal pure returns (int144) {
        require(value >= type(int144).min && value <= type(int144).max, "SafeCast: value doesn't fit in 144 bits");
        return int144(value);
    }

    /**
     * @dev Returns the downcasted int136 from int256, reverting on
     * overflow (when the input is less than smallest int136 or
     * greater than largest int136).
     *
     * Counterpart to Solidity's `int136` operator.
     *
     * Requirements:
     *
     * - input must fit into 136 bits
     *
     * _Available since v4.7._
     */
    function toInt136(int256 value) internal pure returns (int136) {
        require(value >= type(int136).min && value <= type(int136).max, "SafeCast: value doesn't fit in 136 bits");
        return int136(value);
    }

    /**
     * @dev Returns the downcasted int128 from int256, reverting on
     * overflow (when the input is less than smallest int128 or
     * greater than largest int128).
     *
     * Counterpart to Solidity's `int128` operator.
     *
     * Requirements:
     *
     * - input must fit into 128 bits
     *
     * _Available since v3.1._
     */
    function toInt128(int256 value) internal pure returns (int128) {
        require(value >= type(int128).min && value <= type(int128).max, "SafeCast: value doesn't fit in 128 bits");
        return int128(value);
    }

    /**
     * @dev Returns the downcasted int120 from int256, reverting on
     * overflow (when the input is less than smallest int120 or
     * greater than largest int120).
     *
     * Counterpart to Solidity's `int120` operator.
     *
     * Requirements:
     *
     * - input must fit into 120 bits
     *
     * _Available since v4.7._
     */
    function toInt120(int256 value) internal pure returns (int120) {
        require(value >= type(int120).min && value <= type(int120).max, "SafeCast: value doesn't fit in 120 bits");
        return int120(value);
    }

    /**
     * @dev Returns the downcasted int112 from int256, reverting on
     * overflow (when the input is less than smallest int112 or
     * greater than largest int112).
     *
     * Counterpart to Solidity's `int112` operator.
     *
     * Requirements:
     *
     * - input must fit into 112 bits
     *
     * _Available since v4.7._
     */
    function toInt112(int256 value) internal pure returns (int112) {
        require(value >= type(int112).min && value <= type(int112).max, "SafeCast: value doesn't fit in 112 bits");
        return int112(value);
    }

    /**
     * @dev Returns the downcasted int104 from int256, reverting on
     * overflow (when the input is less than smallest int104 or
     * greater than largest int104).
     *
     * Counterpart to Solidity's `int104` operator.
     *
     * Requirements:
     *
     * - input must fit into 104 bits
     *
     * _Available since v4.7._
     */
    function toInt104(int256 value) internal pure returns (int104) {
        require(value >= type(int104).min && value <= type(int104).max, "SafeCast: value doesn't fit in 104 bits");
        return int104(value);
    }

    /**
     * @dev Returns the downcasted int96 from int256, reverting on
     * overflow (when the input is less than smallest int96 or
     * greater than largest int96).
     *
     * Counterpart to Solidity's `int96` operator.
     *
     * Requirements:
     *
     * - input must fit into 96 bits
     *
     * _Available since v4.7._
     */
    function toInt96(int256 value) internal pure returns (int96) {
        require(value >= type(int96).min && value <= type(int96).max, "SafeCast: value doesn't fit in 96 bits");
        return int96(value);
    }

    /**
     * @dev Returns the downcasted int88 from int256, reverting on
     * overflow (when the input is less than smallest int88 or
     * greater than largest int88).
     *
     * Counterpart to Solidity's `int88` operator.
     *
     * Requirements:
     *
     * - input must fit into 88 bits
     *
     * _Available since v4.7._
     */
    function toInt88(int256 value) internal pure returns (int88) {
        require(value >= type(int88).min && value <= type(int88).max, "SafeCast: value doesn't fit in 88 bits");
        return int88(value);
    }

    /**
     * @dev Returns the downcasted int80 from int256, reverting on
     * overflow (when the input is less than smallest int80 or
     * greater than largest int80).
     *
     * Counterpart to Solidity's `int80` operator.
     *
     * Requirements:
     *
     * - input must fit into 80 bits
     *
     * _Available since v4.7._
     */
    function toInt80(int256 value) internal pure returns (int80) {
        require(value >= type(int80).min && value <= type(int80).max, "SafeCast: value doesn't fit in 80 bits");
        return int80(value);
    }

    /**
     * @dev Returns the downcasted int72 from int256, reverting on
     * overflow (when the input is less than smallest int72 or
     * greater than largest int72).
     *
     * Counterpart to Solidity's `int72` operator.
     *
     * Requirements:
     *
     * - input must fit into 72 bits
     *
     * _Available since v4.7._
     */
    function toInt72(int256 value) internal pure returns (int72) {
        require(value >= type(int72).min && value <= type(int72).max, "SafeCast: value doesn't fit in 72 bits");
        return int72(value);
    }

    /**
     * @dev Returns the downcasted int64 from int256, reverting on
     * overflow (when the input is less than smallest int64 or
     * greater than largest int64).
     *
     * Counterpart to Solidity's `int64` operator.
     *
     * Requirements:
     *
     * - input must fit into 64 bits
     *
     * _Available since v3.1._
     */
    function toInt64(int256 value) internal pure returns (int64) {
        require(value >= type(int64).min && value <= type(int64).max, "SafeCast: value doesn't fit in 64 bits");
        return int64(value);
    }

    /**
     * @dev Returns the downcasted int56 from int256, reverting on
     * overflow (when the input is less than smallest int56 or
     * greater than largest int56).
     *
     * Counterpart to Solidity's `int56` operator.
     *
     * Requirements:
     *
     * - input must fit into 56 bits
     *
     * _Available since v4.7._
     */
    function toInt56(int256 value) internal pure returns (int56) {
        require(value >= type(int56).min && value <= type(int56).max, "SafeCast: value doesn't fit in 56 bits");
        return int56(value);
    }

    /**
     * @dev Returns the downcasted int48 from int256, reverting on
     * overflow (when the input is less than smallest int48 or
     * greater than largest int48).
     *
     * Counterpart to Solidity's `int48` operator.
     *
     * Requirements:
     *
     * - input must fit into 48 bits
     *
     * _Available since v4.7._
     */
    function toInt48(int256 value) internal pure returns (int48) {
        require(value >= type(int48).min && value <= type(int48).max, "SafeCast: value doesn't fit in 48 bits");
        return int48(value);
    }

    /**
     * @dev Returns the downcasted int40 from int256, reverting on
     * overflow (when the input is less than smallest int40 or
     * greater than largest int40).
     *
     * Counterpart to Solidity's `int40` operator.
     *
     * Requirements:
     *
     * - input must fit into 40 bits
     *
     * _Available since v4.7._
     */
    function toInt40(int256 value) internal pure returns (int40) {
        require(value >= type(int40).min && value <= type(int40).max, "SafeCast: value doesn't fit in 40 bits");
        return int40(value);
    }

    /**
     * @dev Returns the downcasted int32 from int256, reverting on
     * overflow (when the input is less than smallest int32 or
     * greater than largest int32).
     *
     * Counterpart to Solidity's `int32` operator.
     *
     * Requirements:
     *
     * - input must fit into 32 bits
     *
     * _Available since v3.1._
     */
    function toInt32(int256 value) internal pure returns (int32) {
        require(value >= type(int32).min && value <= type(int32).max, "SafeCast: value doesn't fit in 32 bits");
        return int32(value);
    }

    /**
     * @dev Returns the downcasted int24 from int256, reverting on
     * overflow (when the input is less than smallest int24 or
     * greater than largest int24).
     *
     * Counterpart to Solidity's `int24` operator.
     *
     * Requirements:
     *
     * - input must fit into 24 bits
     *
     * _Available since v4.7._
     */
    function toInt24(int256 value) internal pure returns (int24) {
        require(value >= type(int24).min && value <= type(int24).max, "SafeCast: value doesn't fit in 24 bits");
        return int24(value);
    }

    /**
     * @dev Returns the downcasted int16 from int256, reverting on
     * overflow (when the input is less than smallest int16 or
     * greater than largest int16).
     *
     * Counterpart to Solidity's `int16` operator.
     *
     * Requirements:
     *
     * - input must fit into 16 bits
     *
     * _Available since v3.1._
     */
    function toInt16(int256 value) internal pure returns (int16) {
        require(value >= type(int16).min && value <= type(int16).max, "SafeCast: value doesn't fit in 16 bits");
        return int16(value);
    }

    /**
     * @dev Returns the downcasted int8 from int256, reverting on
     * overflow (when the input is less than smallest int8 or
     * greater than largest int8).
     *
     * Counterpart to Solidity's `int8` operator.
     *
     * Requirements:
     *
     * - input must fit into 8 bits
     *
     * _Available since v3.1._
     */
    function toInt8(int256 value) internal pure returns (int8) {
        require(value >= type(int8).min && value <= type(int8).max, "SafeCast: value doesn't fit in 8 bits");
        return int8(value);
    }

    /**
     * @dev Converts an unsigned uint256 into a signed int256.
     *
     * Requirements:
     *
     * - input must be less than or equal to maxInt256.
     *
     * _Available since v3.0._
     */
    function toInt256(uint256 value) internal pure returns (int256) {
        // Note: Unsafe cast below is okay because `type(int256).max` is guaranteed to be positive
        require(value <= uint256(type(int256).max), "SafeCast: value doesn't fit in an int256");
        return int256(value);
    }
}


// File contracts/routers/UnoswapV3Router.sol


pragma solidity 0.8.17;









contract UnoswapV3Router is EthReceiver, IUniswapV3SwapCallback {
    using Address for address payable;
    using SafeERC20 for IERC20;

    error EmptyPools();
    error BadPool();

    uint256 private constant _ONE_FOR_ZERO_MASK = 1 << 255;
    uint256 private constant _WETH_UNWRAP_MASK = 1 << 253;
    bytes32 private constant _POOL_INIT_CODE_HASH = 0xe34f199b19b2b4f47f68442619d555527d244f78a3297ea89325f843f87b8b54;
    bytes32 private constant _FF_FACTORY = 0xff1F98431c8aD98523631AE4a59f267346ea31F9840000000000000000000000;
    // concatenation of token0(), token1() fee(), transfer() and transferFrom() selectors
    bytes32 private constant _SELECTORS = 0x0dfe1681d21220a7ddca3f43a9059cbb23b872dd000000000000000000000000;
    uint256 private constant _ADDRESS_MASK =   0x000000000000000000000000ffffffffffffffffffffffffffffffffffffffff;
    /// @dev The minimum value that can be returned from #getSqrtRatioAtTick. Equivalent to getSqrtRatioAtTick(MIN_TICK)
    uint160 private constant _MIN_SQRT_RATIO = 4295128739 + 1;
    /// @dev The maximum value that can be returned from #getSqrtRatioAtTick. Equivalent to getSqrtRatioAtTick(MAX_TICK)
    uint160 private constant _MAX_SQRT_RATIO = 1461446703485210103287273052203988822378723970342 - 1;
    IWETH private immutable _WETH;  // solhint-disable-line var-name-mixedcase

    constructor(IWETH weth) {
        _WETH = weth;
    }

    /// @notice Same as `uniswapV3SwapTo` but calls permit first,
    /// allowing to approve token spending and make a swap in one transaction.
    /// @param recipient Address that will receive swap funds
    /// @param srcToken Source token
    /// @param amount Amount of source tokens to swap
    /// @param minReturn Minimal allowed returnAmount to make transaction commit
    /// @param pools Pools chain used for swaps. Pools src and dst tokens should match to make swap happen
    /// @param permit Should contain valid permit that can be used in `IERC20Permit.permit` calls.
    /// See tests for examples
    function uniswapV3SwapToWithPermit(
        address payable recipient,
        IERC20 srcToken,
        uint256 amount,
        uint256 minReturn,
        uint256[] calldata pools,
        bytes calldata permit
    ) external returns(uint256 returnAmount) {
        srcToken.safePermit(permit);
        return _uniswapV3Swap(recipient, amount, minReturn, pools);
    }

    /// @notice Same as `uniswapV3SwapTo` but uses `msg.sender` as recipient
    /// @param amount Amount of source tokens to swap
    /// @param minReturn Minimal allowed returnAmount to make transaction commit
    /// @param pools Pools chain used for swaps. Pools src and dst tokens should match to make swap happen
    function uniswapV3Swap(
        uint256 amount,
        uint256 minReturn,
        uint256[] calldata pools
    ) external payable returns(uint256 returnAmount) {
        return _uniswapV3Swap(payable(msg.sender), amount, minReturn, pools);
    }

    /// @notice Performs swap using Uniswap V3 exchange. Wraps and unwraps ETH if required.
    /// Sending non-zero `msg.value` for anything but ETH swaps is prohibited
    /// @param recipient Address that will receive swap funds
    /// @param amount Amount of source tokens to swap
    /// @param minReturn Minimal allowed returnAmount to make transaction commit
    /// @param pools Pools chain used for swaps. Pools src and dst tokens should match to make swap happen
    function uniswapV3SwapTo(
        address payable recipient,
        uint256 amount,
        uint256 minReturn,
        uint256[] calldata pools
    ) external payable returns(uint256 returnAmount) {
        return _uniswapV3Swap(recipient, amount, minReturn, pools);
    }

    function _uniswapV3Swap(
        address payable recipient,
        uint256 amount,
        uint256 minReturn,
        uint256[] calldata pools
    ) private returns(uint256 returnAmount) {
        unchecked {
            uint256 len = pools.length;
            if (len == 0) revert EmptyPools();
            uint256 lastIndex = len - 1;
            returnAmount = amount;
            bool wrapWeth = msg.value > 0;
            bool unwrapWeth = pools[lastIndex] & _WETH_UNWRAP_MASK > 0;
            if (wrapWeth) {
                if (msg.value != amount) revert RouterErrors.InvalidMsgValue();
                _WETH.deposit{value: amount}();
            }
            if (len > 1) {
                returnAmount = _makeSwap(address(this), wrapWeth ? address(this) : msg.sender, pools[0], returnAmount);

                for (uint256 i = 1; i < lastIndex; i++) {
                    returnAmount = _makeSwap(address(this), address(this), pools[i], returnAmount);
                }
                returnAmount = _makeSwap(unwrapWeth ? address(this) : recipient, address(this), pools[lastIndex], returnAmount);
            } else {
                returnAmount = _makeSwap(unwrapWeth ? address(this) : recipient, wrapWeth ? address(this) : msg.sender, pools[0], returnAmount);
            }

            if (returnAmount < minReturn) revert RouterErrors.ReturnAmountIsNotEnough();

            if (unwrapWeth) {
                _WETH.withdraw(returnAmount);
                recipient.sendValue(returnAmount);
            }
        }
    }

    /// @inheritdoc IUniswapV3SwapCallback
    function uniswapV3SwapCallback(
        int256 amount0Delta,
        int256 amount1Delta,
        bytes calldata /* data */
    ) external override {
        assembly {  // solhint-disable-line no-inline-assembly
            function reRevert() {
                returndatacopy(0, 0, returndatasize())
                revert(0, returndatasize())
            }

            function validateERC20Transfer(status) {
                if iszero(status) {
                    reRevert()
                }
                let success := or(
                    iszero(returndatasize()),                       // empty return data
                    and(gt(returndatasize(), 31), eq(mload(0), 1))  // true in return data
                )
                if iszero(success) {
                    mstore(0, 0xf27f64e400000000000000000000000000000000000000000000000000000000)  // ERC20TransferFailed()
                    revert(0, 4)
                }
            }

            let emptyPtr := mload(0x40)
            let resultPtr := add(emptyPtr, 0x15)  // 0x15 = _FF_FACTORY size

            mstore(emptyPtr, _SELECTORS)
            if iszero(staticcall(gas(), caller(), emptyPtr, 0x4, resultPtr, 0x20)) {
                reRevert()
            }
            if iszero(staticcall(gas(), caller(), add(emptyPtr, 0x4), 0x4, add(resultPtr, 0x20), 0x20)) {
                reRevert()
            }
            if iszero(staticcall(gas(), caller(), add(emptyPtr, 0x8), 0x4, add(resultPtr, 0x40), 0x20)) {
                reRevert()
            }

            let token
            let amount
            switch sgt(amount0Delta, 0)
            case 1 {
                token := mload(resultPtr)
                amount := amount0Delta
            }
            default {
                token := mload(add(resultPtr, 0x20))
                amount := amount1Delta
            }

            mstore(emptyPtr, _FF_FACTORY)
            mstore(resultPtr, keccak256(resultPtr, 0x60)) // Compute the inner hash in-place
            mstore(add(resultPtr, 0x20), _POOL_INIT_CODE_HASH)
            let pool := and(keccak256(emptyPtr, 0x55), _ADDRESS_MASK)
            if xor(pool, caller()) {
                mstore(0, 0xb2c0272200000000000000000000000000000000000000000000000000000000)  // BadPool()
                revert(0, 4)
            }

            let payer := calldataload(0x84)
            mstore(emptyPtr, _SELECTORS)
            switch eq(payer, address())
            case 1 {
                // token.safeTransfer(msg.sender,amount)
                mstore(add(emptyPtr, 0x10), caller())
                mstore(add(emptyPtr, 0x30), amount)
                validateERC20Transfer(
                    call(gas(), token, 0, add(emptyPtr, 0x0c), 0x44, 0, 0x20)
                )
            }
            default {
                // token.safeTransferFrom(payer, msg.sender, amount);
                mstore(add(emptyPtr, 0x14), payer)
                mstore(add(emptyPtr, 0x34), caller())
                mstore(add(emptyPtr, 0x54), amount)
                validateERC20Transfer(
                    call(gas(), token, 0, add(emptyPtr, 0x10), 0x64, 0, 0x20)
                )
            }
        }
    }

    function _makeSwap(address recipient, address payer, uint256 pool, uint256 amount) private returns (uint256) {
        bool zeroForOne = pool & _ONE_FOR_ZERO_MASK == 0;
        if (zeroForOne) {
            (, int256 amount1) = IUniswapV3Pool(address(uint160(pool))).swap(
                recipient,
                zeroForOne,
                SafeCast.toInt256(amount),
                _MIN_SQRT_RATIO,
                abi.encode(payer)
            );
            return SafeCast.toUint256(-amount1);
        } else {
            (int256 amount0,) = IUniswapV3Pool(address(uint160(pool))).swap(
                recipient,
                zeroForOne,
                SafeCast.toInt256(amount),
                _MAX_SQRT_RATIO,
                abi.encode(payer)
            );
            return SafeCast.toUint256(-amount0);
        }
    }
}


// File @1inch/solidity-utils/contracts/[email protected]


pragma solidity ^0.8.0;

abstract contract OnlyWethReceiver is EthReceiver {
    address private immutable _WETH;  // solhint-disable-line var-name-mixedcase

    constructor(address weth) {
        _WETH = address(weth);
    }

    function _receive() internal virtual override {
        if (msg.sender != _WETH) revert EthDepositRejected();
    }
}


// File @openzeppelin/contracts/interfaces/[email protected]

// OpenZeppelin Contracts v4.4.1 (interfaces/IERC1271.sol)

pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC1271 standard signature validation method for
 * contracts as defined in https://eips.ethereum.org/EIPS/eip-1271[ERC-1271].
 *
 * _Available since v4.1._
 */
interface IERC1271 {
    /**
     * @dev Should return whether the signature provided is valid for the provided data
     * @param hash      Hash of the data to be signed
     * @param signature Signature byte array associated with _data
     */
    function isValidSignature(bytes32 hash, bytes memory signature) external view returns (bytes4 magicValue);
}


// File @1inch/solidity-utils/contracts/libraries/[email protected]


pragma solidity ^0.8.0;

library ECDSA {
    // EIP-2 still allows signature malleability for ecrecover(). Remove this possibility and make the signature
    // unique. Appendix F in the Ethereum Yellow paper (https://ethereum.github.io/yellowpaper/paper.pdf), defines
    // the valid range for s in (301): 0 < s < secp256k1n ÷ 2 + 1, and for v in (302): v ∈ {27, 28}. Most
    // signatures from current libraries generate a unique signature with an s-value in the lower half order.
    //
    // If your library generates malleable signatures, such as s-values in the upper range, calculate a new s-value
    // with 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEBAAEDCE6AF48A03BBFD25E8CD0364141 - s1 and flip v from 27 to 28 or
    // vice versa. If your library also generates signatures with 0/1 for v instead 27/28, add 27 to v to accept
    // these malleable signatures as well.
    uint256 private constant _S_BOUNDARY = 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF5D576E7357A4501DDFE92F46681B20A0 + 1;
    uint256 private constant _COMPACT_S_MASK = 0x7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff;
    uint256 private constant _COMPACT_V_SHIFT = 255;

    function recover(bytes32 hash, uint8 v, bytes32 r, bytes32 s) internal view returns(address signer) {
        /// @solidity memory-safe-assembly
        assembly { // solhint-disable-line no-inline-assembly
            if lt(s, _S_BOUNDARY) {
                let ptr := mload(0x40)

                mstore(ptr, hash)
                mstore(add(ptr, 0x20), v)
                mstore(add(ptr, 0x40), r)
                mstore(add(ptr, 0x60), s)
                mstore(0, 0)
                pop(staticcall(gas(), 0x1, ptr, 0x80, 0, 0x20))
                signer := mload(0)
            }
        }
    }

    function recover(bytes32 hash, bytes32 r, bytes32 vs) internal view returns(address signer) {
        /// @solidity memory-safe-assembly
        assembly { // solhint-disable-line no-inline-assembly
            let s := and(vs, _COMPACT_S_MASK)
            if lt(s, _S_BOUNDARY) {
                let ptr := mload(0x40)

                mstore(ptr, hash)
                mstore(add(ptr, 0x20), add(27, shr(_COMPACT_V_SHIFT, vs)))
                mstore(add(ptr, 0x40), r)
                mstore(add(ptr, 0x60), s)
                mstore(0, 0)
                pop(staticcall(gas(), 0x1, ptr, 0x80, 0, 0x20))
                signer := mload(0)
            }
        }
    }

    /// WARNING!!!
    /// There is a known signature malleability issue with two representations of signatures!
    /// Even though this function is able to verify both standard 65-byte and compact 64-byte EIP-2098 signatures
    /// one should never use raw signatures for any kind of invalidation logic in their code.
    /// As the standard and compact representations are interchangeable any invalidation logic that relies on
    /// signature uniqueness will get rekt.
    /// More info: https://github.com/OpenZeppelin/openzeppelin-contracts/security/advisories/GHSA-4h98-2769-gh6h
    function recover(bytes32 hash, bytes calldata signature) internal view returns(address signer) {
        /// @solidity memory-safe-assembly
        assembly { // solhint-disable-line no-inline-assembly
            let ptr := mload(0x40)

            // memory[ptr:ptr+0x80] = (hash, v, r, s)
            switch signature.length
            case 65 {
                // memory[ptr+0x20:ptr+0x80] = (v, r, s)
                mstore(add(ptr, 0x20), byte(0, calldataload(add(signature.offset, 0x40))))
                calldatacopy(add(ptr, 0x40), signature.offset, 0x40)
            }
            case 64 {
                // memory[ptr+0x20:ptr+0x80] = (v, r, s)
                let vs := calldataload(add(signature.offset, 0x20))
                mstore(add(ptr, 0x20), add(27, shr(_COMPACT_V_SHIFT, vs)))
                calldatacopy(add(ptr, 0x40), signature.offset, 0x20)
                mstore(add(ptr, 0x60), and(vs, _COMPACT_S_MASK))
            }
            default {
                ptr := 0
            }

            if ptr {
                if lt(mload(add(ptr, 0x60)), _S_BOUNDARY) {
                    // memory[ptr:ptr+0x20] = (hash)
                    mstore(ptr, hash)

                    mstore(0, 0)
                    pop(staticcall(gas(), 0x1, ptr, 0x80, 0, 0x20))
                    signer := mload(0)
                }
            }
        }
    }

    function recoverOrIsValidSignature(address signer, bytes32 hash, bytes calldata signature) internal view returns(bool success) {
        if (signer == address(0)) return false;
        if ((signature.length == 64 || signature.length == 65) && recover(hash, signature) == signer) {
            return true;
        }
        return isValidSignature(signer, hash, signature);
    }

    function recoverOrIsValidSignature(address signer, bytes32 hash, uint8 v, bytes32 r, bytes32 s) internal view returns(bool success) {
        if (signer == address(0)) return false;
        if (recover(hash, v, r, s) == signer) {
            return true;
        }
        return isValidSignature(signer, hash, v, r, s);
    }

    function recoverOrIsValidSignature(address signer, bytes32 hash, bytes32 r, bytes32 vs) internal view returns(bool success) {
        if (signer == address(0)) return false;
        if (recover(hash, r, vs) == signer) {
            return true;
        }
        return isValidSignature(signer, hash, r, vs);
    }

    function recoverOrIsValidSignature65(address signer, bytes32 hash, bytes32 r, bytes32 vs) internal view returns(bool success) {
        if (signer == address(0)) return false;
        if (recover(hash, r, vs) == signer) {
            return true;
        }
        return isValidSignature65(signer, hash, r, vs);
    }

    function isValidSignature(address signer, bytes32 hash, bytes calldata signature) internal view returns(bool success) {
        // (bool success, bytes memory data) = signer.staticcall(abi.encodeWithSelector(IERC1271.isValidSignature.selector, hash, signature));
        // return success && data.length >= 4 && abi.decode(data, (bytes4)) == IERC1271.isValidSignature.selector;
        bytes4 selector = IERC1271.isValidSignature.selector;
        /// @solidity memory-safe-assembly
        assembly { // solhint-disable-line no-inline-assembly
            let ptr := mload(0x40)

            mstore(ptr, selector)
            mstore(add(ptr, 0x04), hash)
            mstore(add(ptr, 0x24), 0x40)
            mstore(add(ptr, 0x44), signature.length)
            calldatacopy(add(ptr, 0x64), signature.offset, signature.length)
            if staticcall(gas(), signer, ptr, add(0x64, signature.length), 0, 0x20) {
                success := and(eq(selector, mload(0)), eq(returndatasize(), 0x20))
            }
        }
    }

    function isValidSignature(address signer, bytes32 hash, uint8 v, bytes32 r, bytes32 s) internal view returns(bool success) {
        bytes4 selector = IERC1271.isValidSignature.selector;
        /// @solidity memory-safe-assembly
        assembly { // solhint-disable-line no-inline-assembly
            let ptr := mload(0x40)

            mstore(ptr, selector)
            mstore(add(ptr, 0x04), hash)
            mstore(add(ptr, 0x24), 0x40)
            mstore(add(ptr, 0x44), 65)
            mstore(add(ptr, 0x64), r)
            mstore(add(ptr, 0x84), s)
            mstore8(add(ptr, 0xa4), v)
            if staticcall(gas(), signer, ptr, 0xa5, 0, 0x20) {
                success := and(eq(selector, mload(0)), eq(returndatasize(), 0x20))
            }
        }
    }

    function isValidSignature(address signer, bytes32 hash, bytes32 r, bytes32 vs) internal view returns(bool success) {
        // (bool success, bytes memory data) = signer.staticcall(abi.encodeWithSelector(IERC1271.isValidSignature.selector, hash, abi.encodePacked(r, vs)));
        // return success && data.length >= 4 && abi.decode(data, (bytes4)) == IERC1271.isValidSignature.selector;
        bytes4 selector = IERC1271.isValidSignature.selector;
        /// @solidity memory-safe-assembly
        assembly { // solhint-disable-line no-inline-assembly
            let ptr := mload(0x40)

            mstore(ptr, selector)
            mstore(add(ptr, 0x04), hash)
            mstore(add(ptr, 0x24), 0x40)
            mstore(add(ptr, 0x44), 64)
            mstore(add(ptr, 0x64), r)
            mstore(add(ptr, 0x84), vs)
            if staticcall(gas(), signer, ptr, 0xa4, 0, 0x20) {
                success := and(eq(selector, mload(0)), eq(returndatasize(), 0x20))
            }
        }
    }

    function isValidSignature65(address signer, bytes32 hash, bytes32 r, bytes32 vs) internal view returns(bool success) {
        // (bool success, bytes memory data) = signer.staticcall(abi.encodeWithSelector(IERC1271.isValidSignature.selector, hash, abi.encodePacked(r, vs & ~uint256(1 << 255), uint8(vs >> 255))));
        // return success && data.length >= 4 && abi.decode(data, (bytes4)) == IERC1271.isValidSignature.selector;
        bytes4 selector = IERC1271.isValidSignature.selector;
        /// @solidity memory-safe-assembly
        assembly { // solhint-disable-line no-inline-assembly
            let ptr := mload(0x40)

            mstore(ptr, selector)
            mstore(add(ptr, 0x04), hash)
            mstore(add(ptr, 0x24), 0x40)
            mstore(add(ptr, 0x44), 65)
            mstore(add(ptr, 0x64), r)
            mstore(add(ptr, 0x84), and(vs, _COMPACT_S_MASK))
            mstore8(add(ptr, 0xa4), add(27, shr(_COMPACT_V_SHIFT, vs)))
            if staticcall(gas(), signer, ptr, 0xa5, 0, 0x20) {
                success := and(eq(selector, mload(0)), eq(returndatasize(), 0x20))
            }
        }
    }

    function toEthSignedMessageHash(bytes32 hash) internal pure returns (bytes32 res) {
        // 32 is the length in bytes of hash, enforced by the type signature above
        // return keccak256(abi.encodePacked("\x19Ethereum Signed Message:\n32", hash));
        /// @solidity memory-safe-assembly
        assembly { // solhint-disable-line no-inline-assembly
            mstore(0, 0x19457468657265756d205369676e6564204d6573736167653a0a333200000000) // "\x19Ethereum Signed Message:\n32"
            mstore(28, hash)
            res := keccak256(0, 60)
        }
    }

    function toTypedDataHash(bytes32 domainSeparator, bytes32 structHash) internal pure returns (bytes32 res) {
        // return keccak256(abi.encodePacked("\x19\x01", domainSeparator, structHash));
        /// @solidity memory-safe-assembly
        assembly { // solhint-disable-line no-inline-assembly
            let ptr := mload(0x40)
            mstore(ptr, 0x1901000000000000000000000000000000000000000000000000000000000000) // "\x19\x01"
            mstore(add(ptr, 0x02), domainSeparator)
            mstore(add(ptr, 0x22), structHash)
            res := keccak256(ptr, 66)
        }
    }
}


// File @1inch/limit-order-protocol/contracts/[email protected]


pragma solidity 0.8.17;

library OrderRFQLib {
    struct OrderRFQ {
        uint256 info;  // lowest 64 bits is the order id, next 64 bits is the expiration timestamp
        address makerAsset;
        address takerAsset;
        address maker;
        address allowedSender;  // equals to Zero address on public orders
        uint256 makingAmount;
        uint256 takingAmount;
    }

    bytes32 constant internal _LIMIT_ORDER_RFQ_TYPEHASH = keccak256(
        "OrderRFQ("
            "uint256 info,"
            "address makerAsset,"
            "address takerAsset,"
            "address maker,"
            "address allowedSender,"
            "uint256 makingAmount,"
            "uint256 takingAmount"
        ")"
    );

    function hash(OrderRFQ memory order, bytes32 domainSeparator) internal pure returns(bytes32 result) {
        bytes32 typehash = _LIMIT_ORDER_RFQ_TYPEHASH;
        bytes32 orderHash;
        // this assembly is memory unsafe :(
        assembly { // solhint-disable-line no-inline-assembly
            let ptr := sub(order, 0x20)

            // keccak256(abi.encode(_LIMIT_ORDER_RFQ_TYPEHASH, order));
            let tmp := mload(ptr)
            mstore(ptr, typehash)
            orderHash := keccak256(ptr, 0x100)
            mstore(ptr, tmp)
        }
        return ECDSA.toTypedDataHash(domainSeparator, orderHash);
    }
}


// File @openzeppelin/contracts/utils/[email protected]

// OpenZeppelin Contracts (last updated v4.7.0) (utils/Strings.sol)

pragma solidity ^0.8.0;

/**
 * @dev String operations.
 */
library Strings {
    bytes16 private constant _HEX_SYMBOLS = "0123456789abcdef";
    uint8 private constant _ADDRESS_LENGTH = 20;

    /**
     * @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);
    }

    /**
     * @dev Converts an `address` with fixed length of 20 bytes to its not checksummed ASCII `string` hexadecimal representation.
     */
    function toHexString(address addr) internal pure returns (string memory) {
        return toHexString(uint256(uint160(addr)), _ADDRESS_LENGTH);
    }
}


// File @openzeppelin/contracts/utils/cryptography/[email protected]

// OpenZeppelin Contracts v4.4.1 (utils/cryptography/draft-EIP712.sol)

pragma solidity ^0.8.0;

/**
 * @dev https://eips.ethereum.org/EIPS/eip-712[EIP 712] is a standard for hashing and signing of typed structured data.
 *
 * The encoding specified in the EIP is very generic, and such a generic implementation in Solidity is not feasible,
 * thus this contract does not implement the encoding itself. Protocols need to implement the type-specific encoding
 * they need in their contracts using a combination of `abi.encode` and `keccak256`.
 *
 * This contract implements the EIP 712 domain separator ({_domainSeparatorV4}) that is used as part of the encoding
 * scheme, and the final step of the encoding to obtain the message digest that is then signed via ECDSA
 * ({_hashTypedDataV4}).
 *
 * The implementation of the domain separator was designed to be as efficient as possible while still properly updating
 * the chain id to protect against replay attacks on an eventual fork of the chain.
 *
 * NOTE: This contract implements the version of the encoding known as "v4", as implemented by the JSON RPC method
 * https://docs.metamask.io/guide/signing-data.html[`eth_signTypedDataV4` in MetaMask].
 *
 * _Available since v3.4._
 */
abstract contract EIP712 {
    /* solhint-disable var-name-mixedcase */
    // Cache the domain separator as an immutable value, but also store the chain id that it corresponds to, in order to
    // invalidate the cached domain separator if the chain id changes.
    bytes32 private immutable _CACHED_DOMAIN_SEPARATOR;
    uint256 private immutable _CACHED_CHAIN_ID;
    address private immutable _CACHED_THIS;

    bytes32 private immutable _HASHED_NAME;
    bytes32 private immutable _HASHED_VERSION;
    bytes32 private immutable _TYPE_HASH;

    /* solhint-enable var-name-mixedcase */

    /**
     * @dev Initializes the domain separator and parameter caches.
     *
     * The meaning of `name` and `version` is specified in
     * https://eips.ethereum.org/EIPS/eip-712#definition-of-domainseparator[EIP 712]:
     *
     * - `name`: the user readable name of the signing domain, i.e. the name of the DApp or the protocol.
     * - `version`: the current major version of the signing domain.
     *
     * NOTE: These parameters cannot be changed except through a xref:learn::upgrading-smart-contracts.adoc[smart
     * contract upgrade].
     */
    constructor(string memory name, string memory version) {
        bytes32 hashedName = keccak256(bytes(name));
        bytes32 hashedVersion = keccak256(bytes(version));
        bytes32 typeHash = keccak256(
            "EIP712Domain(string name,string version,uint256 chainId,address verifyingContract)"
        );
        _HASHED_NAME = hashedName;
        _HASHED_VERSION = hashedVersion;
        _CACHED_CHAIN_ID = block.chainid;
        _CACHED_DOMAIN_SEPARATOR = _buildDomainSeparator(typeHash, hashedName, hashedVersion);
        _CACHED_THIS = address(this);
        _TYPE_HASH = typeHash;
    }

    /**
     * @dev Returns the domain separator for the current chain.
     */
    function _domainSeparatorV4() internal view returns (bytes32) {
        if (address(this) == _CACHED_THIS && block.chainid == _CACHED_CHAIN_ID) {
            return _CACHED_DOMAIN_SEPARATOR;
        } else {
            return _buildDomainSeparator(_TYPE_HASH, _HASHED_NAME, _HASHED_VERSION);
        }
    }

    function _buildDomainSeparator(
        bytes32 typeHash,
        bytes32 nameHash,
        bytes32 versionHash
    ) private view returns (bytes32) {
        return keccak256(abi.encode(typeHash, nameHash, versionHash, block.chainid, address(this)));
    }

    /**
     * @dev Given an already https://eips.ethereum.org/EIPS/eip-712#definition-of-hashstruct[hashed struct], this
     * function returns the hash of the fully encoded EIP712 message for this domain.
     *
     * This hash can be used together with {ECDSA-recover} to obtain the signer of a message. For example:
     *
     * ```solidity
     * bytes32 digest = _hashTypedDataV4(keccak256(abi.encode(
     *     keccak256("Mail(address to,string contents)"),
     *     mailTo,
     *     keccak256(bytes(mailContents))
     * )));
     * address signer = ECDSA.recover(digest, signature);
     * ```
     */
    function _hashTypedDataV4(bytes32 structHash) internal view virtual returns (bytes32) {
        return ECDSA.toTypedDataHash(_domainSeparatorV4(), structHash);
    }
}


// File @1inch/limit-order-protocol/contracts/libraries/[email protected]


pragma solidity 0.8.17;

library Errors {
    error InvalidMsgValue();
    error ETHTransferFailed();
}


// File @1inch/limit-order-protocol/contracts/helpers/[email protected]


pragma solidity 0.8.17;

/// @title A helper contract for calculations related to order amounts
library AmountCalculator {
    /// @notice Calculates maker amount
    /// @return Result Floored maker amount
    function getMakingAmount(uint256 orderMakerAmount, uint256 orderTakerAmount, uint256 swapTakerAmount) internal pure returns(uint256) {
        return swapTakerAmount * orderMakerAmount / orderTakerAmount;
    }

    /// @notice Calculates taker amount
    /// @return Result Ceiled taker amount
    function getTakingAmount(uint256 orderMakerAmount, uint256 orderTakerAmount, uint256 swapMakerAmount) internal pure returns(uint256) {
        return (swapMakerAmount * orderTakerAmount + orderMakerAmount - 1) / orderMakerAmount;
    }
}


// File @1inch/limit-order-protocol/contracts/[email protected]


pragma solidity 0.8.17;







/// @title RFQ Limit Order mixin
abstract contract OrderRFQMixin is EIP712, OnlyWethReceiver {
    using SafeERC20 for IERC20;
    using OrderRFQLib for OrderRFQLib.OrderRFQ;

    error RFQZeroTargetIsForbidden();
    error RFQPrivateOrder();
    error RFQBadSignature();
    error OrderExpired();
    error MakingAmountExceeded();
    error TakingAmountExceeded();
    error RFQSwapWithZeroAmount();
    error InvalidatedOrder();

    /**
     * @notice Emitted when RFQ gets filled
     * @param orderHash Hash of the order
     * @param makingAmount Amount of the maker asset that was transferred from maker to taker
     */
    event OrderFilledRFQ(
        bytes32 orderHash,
        uint256 makingAmount
    );

    uint256 private constant _RAW_CALL_GAS_LIMIT = 5000;
    uint256 private constant _MAKER_AMOUNT_FLAG = 1 << 255;
    uint256 private constant _SIGNER_SMART_CONTRACT_HINT = 1 << 254;
    uint256 private constant _IS_VALID_SIGNATURE_65_BYTES = 1 << 253;
    uint256 private constant _UNWRAP_WETH_FLAG = 1 << 252;
    uint256 private constant _AMOUNT_MASK = ~(
        _MAKER_AMOUNT_FLAG |
        _SIGNER_SMART_CONTRACT_HINT |
        _IS_VALID_SIGNATURE_65_BYTES |
        _UNWRAP_WETH_FLAG
    );

    IWETH private immutable _WETH;  // solhint-disable-line var-name-mixedcase
    mapping(address => mapping(uint256 => uint256)) private _invalidator;

    constructor(IWETH weth) OnlyWethReceiver(address(weth)) {
        _WETH = weth;
    }

    /**
     * @notice Returns bitmask for double-spend invalidators based on lowest byte of order.info and filled quotes
     * @param maker Maker address
     * @param slot Slot number to return bitmask for
     * @return result Each bit represents whether corresponding was already invalidated
     */
    function invalidatorForOrderRFQ(address maker, uint256 slot) external view returns(uint256 /* result */) {
        return _invalidator[maker][slot];
    }

    /**
     * @notice Cancels order's quote
     * @param orderInfo Order info (only order id in lowest 64 bits is used)
     */
    function cancelOrderRFQ(uint256 orderInfo) external {
        _invalidateOrder(msg.sender, orderInfo, 0);
    }

    /// @notice Cancels multiple order's quotes
    function cancelOrderRFQ(uint256 orderInfo, uint256 additionalMask) external {
        _invalidateOrder(msg.sender, orderInfo, additionalMask);
    }

    /**
     * @notice Fills order's quote, fully or partially (whichever is possible)
     * @param order Order quote to fill
     * @param signature Signature to confirm quote ownership
     * @param flagsAndAmount Fill configuration flags with amount packed in one slot
     * @return filledMakingAmount Actual amount transferred from maker to taker
     * @return filledTakingAmount Actual amount transferred from taker to maker
     * @return orderHash Hash of the filled order
     */
    function fillOrderRFQ(
        OrderRFQLib.OrderRFQ memory order,
        bytes calldata signature,
        uint256 flagsAndAmount
    ) external payable returns(uint256 /* filledMakingAmount */, uint256 /* filledTakingAmount */, bytes32 /* orderHash */) {
        return fillOrderRFQTo(order, signature, flagsAndAmount, msg.sender);
    }

    /**
     * @notice Fills order's quote, fully or partially, with compact signature
     * @param order Order quote to fill
     * @param r R component of signature
     * @param vs VS component of signature
     * @param flagsAndAmount Fill configuration flags with amount packed in one slot
     * - Bits 0-252 contain the amount to fill
     * - Bit 253 is used to indicate whether signature is 64-bit (0) or 65-bit (1)
     * - Bit 254 is used to indicate whether smart contract (1) signed the order or not (0)
     * - Bit 255 is used to indicate whether maker (1) or taker amount (0) is given in the amount parameter
     * @return filledMakingAmount Actual amount transferred from maker to taker
     * @return filledTakingAmount Actual amount transferred from taker to maker
     * @return orderHash Hash of the filled order
     */
    function fillOrderRFQCompact(
        OrderRFQLib.OrderRFQ memory order,
        bytes32 r,
        bytes32 vs,
        uint256 flagsAndAmount
    ) external payable returns(uint256 filledMakingAmount, uint256 filledTakingAmount, bytes32 orderHash) {
        orderHash = order.hash(_domainSeparatorV4());
        if (flagsAndAmount & _SIGNER_SMART_CONTRACT_HINT != 0) {
            if (flagsAndAmount & _IS_VALID_SIGNATURE_65_BYTES != 0) {
                if (!ECDSA.isValidSignature65(order.maker, orderHash, r, vs)) revert RFQBadSignature();
            } else {
                if (!ECDSA.isValidSignature(order.maker, orderHash, r, vs)) revert RFQBadSignature();
            }
        } else {
            if(!ECDSA.recoverOrIsValidSignature(order.maker, orderHash, r, vs)) revert RFQBadSignature();
        }

        (filledMakingAmount, filledTakingAmount) = _fillOrderRFQTo(order, flagsAndAmount, msg.sender);
        emit OrderFilledRFQ(orderHash, filledMakingAmount);
    }

    /**
     * @notice Same as `fillOrderRFQTo` but calls permit first.
     * It allows to approve token spending and make a swap in one transaction.
     * Also allows to specify funds destination instead of `msg.sender`
     * @param order Order quote to fill
     * @param signature Signature to confirm quote ownership
     * @param flagsAndAmount Fill configuration flags with amount packed in one slot
     * @param target Address that will receive swap funds
     * @param permit Should consist of abiencoded token address and encoded `IERC20Permit.permit` call.
     * @return filledMakingAmount Actual amount transferred from maker to taker
     * @return filledTakingAmount Actual amount transferred from taker to maker
     * @return orderHash Hash of the filled order
     * @dev See tests for examples
     */
    function fillOrderRFQToWithPermit(
        OrderRFQLib.OrderRFQ memory order,
        bytes calldata signature,
        uint256 flagsAndAmount,
        address target,
        bytes calldata permit
    ) external returns(uint256 /* filledMakingAmount */, uint256 /* filledTakingAmount */, bytes32 /* orderHash */) {
        IERC20(order.takerAsset).safePermit(permit);
        return fillOrderRFQTo(order, signature, flagsAndAmount, target);
    }

    /**
     * @notice Same as `fillOrderRFQ` but allows to specify funds destination instead of `msg.sender`
     * @param order Order quote to fill
     * @param signature Signature to confirm quote ownership
     * @param flagsAndAmount Fill configuration flags with amount packed in one slot
     * @param target Address that will receive swap funds
     * @return filledMakingAmount Actual amount transferred from maker to taker
     * @return filledTakingAmount Actual amount transferred from taker to maker
     * @return orderHash Hash of the filled order
     */
    function fillOrderRFQTo(
        OrderRFQLib.OrderRFQ memory order,
        bytes calldata signature,
        uint256 flagsAndAmount,
        address target
    ) public payable returns(uint256 filledMakingAmount, uint256 filledTakingAmount, bytes32 orderHash) {
        orderHash = order.hash(_domainSeparatorV4());
        if (flagsAndAmount & _SIGNER_SMART_CONTRACT_HINT != 0) {
            if (flagsAndAmount & _IS_VALID_SIGNATURE_65_BYTES != 0 && signature.length != 65) revert RFQBadSignature();
            if (!ECDSA.isValidSignature(order.maker, orderHash, signature)) revert RFQBadSignature();
        } else {
            if(!ECDSA.recoverOrIsValidSignature(order.maker, orderHash, signature)) revert RFQBadSignature();
        }
        (filledMakingAmount, filledTakingAmount) = _fillOrderRFQTo(order, flagsAndAmount, target);
        emit OrderFilledRFQ(orderHash, filledMakingAmount);
    }

    function _fillOrderRFQTo(
        OrderRFQLib.OrderRFQ memory order,
        uint256 flagsAndAmount,
        address target
    ) private returns(uint256 makingAmount, uint256 takingAmount) {
        if (target == address(0)) revert RFQZeroTargetIsForbidden();

        address maker = order.maker;

        // Validate order
        if (order.allowedSender != address(0) && order.allowedSender != msg.sender) revert RFQPrivateOrder();

        {  // Stack too deep
            uint256 info = order.info;
            // Check time expiration
            uint256 expiration = uint128(info) >> 64;
            if (expiration != 0 && block.timestamp > expiration) revert OrderExpired(); // solhint-disable-line not-rely-on-time
            _invalidateOrder(maker, info, 0);
        }

        {  // Stack too deep
            uint256 orderMakingAmount = order.makingAmount;
            uint256 orderTakingAmount = order.takingAmount;
            uint256 amount = flagsAndAmount & _AMOUNT_MASK;
            // Compute partial fill if needed
            if (amount == 0) {
                // zero amount means whole order
                makingAmount = orderMakingAmount;
                takingAmount = orderTakingAmount;
            }
            else if (flagsAndAmount & _MAKER_AMOUNT_FLAG != 0) {
                if (amount > orderMakingAmount) revert MakingAmountExceeded();
                makingAmount = amount;
                takingAmount = AmountCalculator.getTakingAmount(orderMakingAmount, orderTakingAmount, makingAmount);
            }
            else {
                if (amount > orderTakingAmount) revert TakingAmountExceeded();
                takingAmount = amount;
                makingAmount = AmountCalculator.getMakingAmount(orderMakingAmount, orderTakingAmount, takingAmount);
            }
        }

        if (makingAmount == 0 || takingAmount == 0) revert RFQSwapWithZeroAmount();

        // Maker => Taker
        if (order.makerAsset == address(_WETH) && flagsAndAmount & _UNWRAP_WETH_FLAG != 0) {
            _WETH.transferFrom(maker, address(this), makingAmount);
            _WETH.withdraw(makingAmount);
            // solhint-disable-next-line avoid-low-level-calls
            (bool success, ) = target.call{value: makingAmount, gas: _RAW_CALL_GAS_LIMIT}("");
            if (!success) revert Errors.ETHTransferFailed();
        } else {
            IERC20(order.makerAsset).safeTransferFrom(maker, target, makingAmount);
        }

        // Taker => Maker
        if (order.takerAsset == address(_WETH) && msg.value > 0) {
            if (msg.value != takingAmount) revert Errors.InvalidMsgValue();
            _WETH.deposit{ value: takingAmount }();
            _WETH.transfer(maker, takingAmount);
        } else {
            if (msg.value != 0) revert Errors.InvalidMsgValue();
            IERC20(order.takerAsset).safeTransferFrom(msg.sender, maker, takingAmount);
        }
    }

    function _invalidateOrder(address maker, uint256 orderInfo, uint256 additionalMask) private {
        uint256 invalidatorSlot = uint64(orderInfo) >> 8;
        uint256 invalidatorBits = (1 << uint8(orderInfo)) | additionalMask;
        mapping(uint256 => uint256) storage invalidatorStorage = _invalidator[maker];
        uint256 invalidator = invalidatorStorage[invalidatorSlot];
        if (invalidator & invalidatorBits == invalidatorBits) revert InvalidatedOrder();
        invalidatorStorage[invalidatorSlot] = invalidator | invalidatorBits;
    }
}


// File @1inch/limit-order-protocol/contracts/[email protected]


pragma solidity 0.8.17;

library OrderLib {
    struct Order {
        uint256 salt;
        address makerAsset;
        address takerAsset;
        address maker;
        address receiver;
        address allowedSender;  // equals to Zero address on public orders
        uint256 makingAmount;
        uint256 takingAmount;
        uint256 offsets;
        // bytes makerAssetData;
        // bytes takerAssetData;
        // bytes getMakingAmount; // this.staticcall(abi.encodePacked(bytes, swapTakerAmount)) => (swapMakerAmount)
        // bytes getTakingAmount; // this.staticcall(abi.encodePacked(bytes, swapMakerAmount)) => (swapTakerAmount)
        // bytes predicate;       // this.staticcall(bytes) => (bool)
        // bytes permit;          // On first fill: permit.1.call(abi.encodePacked(permit.selector, permit.2))
        // bytes preInteraction;
        // bytes postInteraction;
        bytes interactions; // concat(makerAssetData, takerAssetData, getMakingAmount, getTakingAmount, predicate, permit, preIntercation, postInteraction)
    }

    bytes32 constant internal _LIMIT_ORDER_TYPEHASH = keccak256(
        "Order("
            "uint256 salt,"
            "address makerAsset,"
            "address takerAsset,"
            "address maker,"
            "address receiver,"
            "address allowedSender,"
            "uint256 makingAmount,"
            "uint256 takingAmount,"
            "uint256 offsets,"
            "bytes interactions"
        ")"
    );

    enum DynamicField {
        MakerAssetData,
        TakerAssetData,
        GetMakingAmount,
        GetTakingAmount,
        Predicate,
        Permit,
        PreInteraction,
        PostInteraction
    }

    function getterIsFrozen(bytes calldata getter) internal pure returns(bool) {
        return getter.length == 1 && getter[0] == "x";
    }

    function _get(Order calldata order, DynamicField field) private pure returns(bytes calldata) {
        uint256 bitShift = uint256(field) << 5; // field * 32
        return order.interactions[
            uint32((order.offsets << 32) >> bitShift):
            uint32(order.offsets >> bitShift)
        ];
    }

    function makerAssetData(Order calldata order) internal pure returns(bytes calldata) {
        return _get(order, DynamicField.MakerAssetData);
    }

    function takerAssetData(Order calldata order) internal pure returns(bytes calldata) {
        return _get(order, DynamicField.TakerAssetData);
    }

    function getMakingAmount(Order calldata order) internal pure returns(bytes calldata) {
        return _get(order, DynamicField.GetMakingAmount);
    }

    function getTakingAmount(Order calldata order) internal pure returns(bytes calldata) {
        return _get(order, DynamicField.GetTakingAmount);
    }

    function predicate(Order calldata order) internal pure returns(bytes calldata) {
        return _get(order, DynamicField.Predicate);
    }

    function permit(Order calldata order) internal pure returns(bytes calldata) {
        return _get(order, DynamicField.Permit);
    }

    function preInteraction(Order calldata order) internal pure returns(bytes calldata) {
        return _get(order, DynamicField.PreInteraction);
    }

    function postInteraction(Order calldata order) internal pure returns(bytes calldata) {
        return _get(order, DynamicField.PostInteraction);
    }

    function hash(Order calldata order, bytes32 domainSeparator) internal pure returns(bytes32 result) {
        bytes calldata interactions = order.interactions;
        bytes32 typehash = _LIMIT_ORDER_TYPEHASH;
        /// @solidity memory-safe-assembly
        assembly { // solhint-disable-line no-inline-assembly
            let ptr := mload(0x40)

            // keccak256(abi.encode(_LIMIT_ORDER_TYPEHASH, orderWithoutInteractions, keccak256(order.interactions)));
            calldatacopy(ptr, interactions.offset, interactions.length)
            mstore(add(ptr, 0x140), keccak256(ptr, interactions.length))
            calldatacopy(add(ptr, 0x20), order, 0x120)
            mstore(ptr, typehash)
            result := keccak256(ptr, 0x160)
        }
        result = ECDSA.toTypedDataHash(domainSeparator, result);
    }
}


// File @1inch/limit-order-protocol/contracts/libraries/[email protected]


pragma solidity 0.8.17;

/// @title Library with gas efficient alternatives to `abi.decode`
library ArgumentsDecoder {
    error IncorrectDataLength();

    function decodeUint256(bytes calldata data, uint256 offset) internal pure returns(uint256 value) {
        unchecked { if (data.length < offset + 32) revert IncorrectDataLength(); }
        // no memory ops inside so this insertion is automatically memory safe
        assembly { // solhint-disable-line no-inline-assembly
            value := calldataload(add(data.offset, offset))
        }
    }

    function decodeSelector(bytes calldata data) internal pure returns(bytes4 value) {
        if (data.length < 4) revert IncorrectDataLength();
        // no memory ops inside so this insertion is automatically memory safe
        assembly { // solhint-disable-line no-inline-assembly
            value := calldataload(data.offset)
        }
    }

    function decodeTailCalldata(bytes calldata data, uint256 tailOffset) internal pure returns(bytes calldata args) {
        if (data.length < tailOffset) revert IncorrectDataLength();
        // no memory ops inside so this insertion is automatically memory safe
        assembly {  // solhint-disable-line no-inline-assembly
            args.offset := add(data.offset, tailOffset)
            args.length := sub(data.length, tailOffset)
        }
    }

    function decodeTargetAndCalldata(bytes calldata data) internal pure returns(address target, bytes calldata args) {
        if (data.length < 20) revert IncorrectDataLength();
        // no memory ops inside so this insertion is automatically memory safe
        assembly {  // solhint-disable-line no-inline-assembly
            target := shr(96, calldataload(data.offset))
            args.offset := add(data.offset, 20)
            args.length := sub(data.length, 20)
        }
    }
}


// File @1inch/limit-order-protocol/contracts/helpers/[email protected]


pragma solidity 0.8.17;

/// @title A helper contract for managing nonce of tx sender
contract NonceManager {
    error AdvanceNonceFailed();
    event NonceIncreased(address indexed maker, uint256 newNonce);

    mapping(address => uint256) public nonce;

    /// @notice Advances nonce by one
    function increaseNonce() external {
        advanceNonce(1);
    }

    /// @notice Advances nonce by specified amount
    function advanceNonce(uint8 amount) public {
        if (amount == 0) revert AdvanceNonceFailed();
        uint256 newNonce = nonce[msg.sender] + amount;
        nonce[msg.sender] = newNonce;
        emit NonceIncreased(msg.sender, newNonce);
    }

    /// @notice Checks if `makerAddress` has specified `makerNonce`
    /// @return Result True if `makerAddress` has specified nonce. Otherwise, false
    function nonceEquals(address makerAddress, uint256 makerNonce) public view returns(bool) {
        return nonce[makerAddress] == makerNonce;
    }
}


// File @1inch/limit-order-protocol/contracts/helpers/[email protected]


pragma solidity 0.8.17;


/// @title A helper contract for executing boolean functions on arbitrary target call results
contract PredicateHelper is NonceManager {
    using ArgumentsDecoder for bytes;

    error ArbitraryStaticCallFailed();

    /// @notice Calls every target with corresponding data
    /// @return Result True if call to any target returned True. Otherwise, false
    function or(uint256 offsets, bytes calldata data) public view returns(bool) {
        uint256 current;
        uint256 previous;
        for (uint256 i = 0; (current = uint32(offsets >> i)) != 0; i += 32) {
            (bool success, uint256 res) = _selfStaticCall(data[previous:current]);
            if (success && res == 1) {
                return true;
            }
            previous = current;
        }
        return false;
    }

    /// @notice Calls every target with corresponding data
    /// @return Result True if calls to all targets returned True. Otherwise, false
    function and(uint256 offsets, bytes calldata data) public view returns(bool) {
        uint256 current;
        uint256 previous;
        for (uint256 i = 0; (current = uint32(offsets >> i)) != 0; i += 32) {
            (bool success, uint256 res) = _selfStaticCall(data[previous:current]);
            if (!success || res != 1) {
                return false;
            }
            previous = current;
        }
        return true;
    }

    /// @notice Calls target with specified data and tests if it's equal to the value
    /// @param value Value to test
    /// @return Result True if call to target returns the same value as `value`. Otherwise, false
    function eq(uint256 value, bytes calldata data) public view returns(bool) {
        (bool success, uint256 res) = _selfStaticCall(data);
        return success && res == value;
    }

    /// @notice Calls target with specified data and tests if it's lower than value
    /// @param value Value to test
    /// @return Result True if call to target returns value which is lower than `value`. Otherwise, false
    function lt(uint256 value, bytes calldata data) public view returns(bool) {
        (bool success, uint256 res) = _selfStaticCall(data);
        return success && res < value;
    }

    /// @notice Calls target with specified data and tests if it's bigger than value
    /// @param value Value to test
    /// @return Result True if call to target returns value which is bigger than `value`. Otherwise, false
    function gt(uint256 value, bytes calldata data) public view returns(bool) {
        (bool success, uint256 res) = _selfStaticCall(data);
        return success && res > value;
    }

    /// @notice Checks passed time against block timestamp
    /// @return Result True if current block timestamp is lower than `time`. Otherwise, false
    function timestampBelow(uint256 time) public view returns(bool) {
        return block.timestamp < time;  // solhint-disable-line not-rely-on-time
    }

    /// @notice Performs an arbitrary call to target with data
    /// @return Result Bytes transmuted to uint256
    function arbitraryStaticCall(address target, bytes calldata data) public view returns(uint256) {
        (bool success, uint256 res) = _staticcallForUint(target, data);
        if (!success) revert ArbitraryStaticCallFailed();
        return res;
    }

    function timestampBelowAndNonceEquals(uint256 timeNonceAccount) public view returns(bool) {
        uint256 _time = uint48(timeNonceAccount >> 208);
        uint256 _nonce = uint48(timeNonceAccount >> 160);
        address _account = address(uint160(timeNonceAccount));
        return timestampBelow(_time) && nonceEquals(_account, _nonce);
    }

    function _selfStaticCall(bytes calldata data) internal view returns(bool, uint256) {
        uint256 selector = uint32(data.decodeSelector());
        uint256 arg = data.decodeUint256(4);

        // special case for the most often used predicate
        if (selector == uint32(this.timestampBelowAndNonceEquals.selector)) {  // 0x2cc2878d
            return (true, timestampBelowAndNonceEquals(arg) ? 1 : 0);
        }

        if (selector < uint32(this.arbitraryStaticCall.selector)) {  // 0xbf15fcd8
            if (selector < uint32(this.eq.selector)) {  // 0x6fe7b0ba
                if (selector == uint32(this.gt.selector)) {  // 0x4f38e2b8
                    return (true, gt(arg, data.decodeTailCalldata(100)) ? 1 : 0);
                } else if (selector == uint32(this.timestampBelow.selector)) {  // 0x63592c2b
                    return (true, timestampBelow(arg) ? 1 : 0);
                }
            } else {
                if (selector == uint32(this.eq.selector)) {  // 0x6fe7b0ba
                    return (true, eq(arg, data.decodeTailCalldata(100)) ? 1 : 0);
                } else if (selector == uint32(this.or.selector)) {  // 0x74261145
                    return (true, or(arg, data.decodeTailCalldata(100)) ? 1 : 0);
                }
            }
        } else {
            if (selector < uint32(this.lt.selector)) {  // 0xca4ece22
                if (selector == uint32(this.arbitraryStaticCall.selector)) {  // 0xbf15fcd8
                    return (true, arbitraryStaticCall(address(uint160(arg)), data.decodeTailCalldata(100)));
                } else if (selector == uint32(this.and.selector)) {  // 0xbfa75143
                    return (true, and(arg, data.decodeTailCalldata(100)) ? 1 : 0);
                }
            } else {
                if (selector == uint32(this.lt.selector)) {  // 0xca4ece22
                    return (true, lt(arg, data.decodeTailCalldata(100)) ? 1 : 0);
                } else if (selector == uint32(this.nonceEquals.selector)) {  // 0xcf6fc6e3
                    return (true, nonceEquals(address(uint160(arg)), data.decodeUint256(0x24)) ? 1 : 0);
                }
            }
        }

        return _staticcallForUint(address(this), data);
    }

    function _staticcallForUint(address target, bytes calldata input) private view returns(bool success, uint256 res) {
        /// @solidity memory-safe-assembly
        assembly { // solhint-disable-line no-inline-assembly
            let data := mload(0x40)

            calldatacopy(data, input.offset, input.length)
            success := staticcall(gas(), target, data, input.length, 0x0, 0x20)
            success := and(success, eq(returndatasize(), 32))
            if success {
                res := mload(0)
            }
        }
    }
}


// File @1inch/limit-order-protocol/contracts/interfaces/[email protected]


pragma solidity 0.8.17;

interface IOrderMixin {
    /**
     * @notice Returns unfilled amount for order. Throws if order does not exist
     * @param orderHash Order's hash. Can be obtained by the `hashOrder` function
     * @return amount Unfilled amount
     */
    function remaining(bytes32 orderHash) external view returns(uint256 amount);

    /**
     * @notice Returns unfilled amount for order
     * @param orderHash Order's hash. Can be obtained by the `hashOrder` function
     * @return rawAmount Unfilled amount of order plus one if order exists. Otherwise 0
     */
    function remainingRaw(bytes32 orderHash) external view returns(uint256 rawAmount);

    /**
     * @notice Same as `remainingRaw` but for multiple orders
     * @param orderHashes Array of hashes
     * @return rawAmounts Array of amounts for each order plus one if order exists or 0 otherwise
     */
    function remainingsRaw(bytes32[] memory orderHashes) external view returns(uint256[] memory rawAmounts);

    /**
     * @notice Checks order predicate
     * @param order Order to check predicate for
     * @return result Predicate evaluation result. True if predicate allows to fill the order, false otherwise
     */
    function checkPredicate(OrderLib.Order calldata order) external view returns(bool result);

    /**
     * @notice Returns order hash according to EIP712 standard
     * @param order Order to get hash for
     * @return orderHash Hash of the order
     */
    function hashOrder(OrderLib.Order calldata order) external view returns(bytes32);

    /**
     * @notice Delegates execution to custom implementation. Could be used to validate if `transferFrom` works properly
     * @dev The function always reverts and returns the simulation results in revert data.
     * @param target Addresses that will be delegated
     * @param data Data that will be passed to delegatee
     */
    function simulate(address target, bytes calldata data) external;

    /**
     * @notice Cancels order.
     * @dev Order is cancelled by setting remaining amount to _ORDER_FILLED value
     * @param order Order quote to cancel
     * @return orderRemaining Unfilled amount of order before cancellation
     * @return orderHash Hash of the filled order
     */
    function cancelOrder(OrderLib.Order calldata order) external returns(uint256 orderRemaining, bytes32 orderHash);

    /**
     * @notice Fills an order. If one doesn't exist (first fill) it will be created using order.makerAssetData
     * @param order Order quote to fill
     * @param signature Signature to confirm quote ownership
     * @param interaction A call data for InteractiveNotificationReceiver. Taker may execute interaction after getting maker assets and before sending taker assets.
     * @param makingAmount Making amount
     * @param takingAmount Taking amount
     * @param skipPermitAndThresholdAmount Specifies maximum allowed takingAmount when takingAmount is zero, otherwise specifies minimum allowed makingAmount. Top-most bit specifies whether taker wants to skip maker's permit.
     * @return actualMakingAmount Actual amount transferred from maker to taker
     * @return actualTakingAmount Actual amount transferred from taker to maker
     * @return orderHash Hash of the filled order
     */
    function fillOrder(
        OrderLib.Order calldata order,
        bytes calldata signature,
        bytes calldata interaction,
        uint256 makingAmount,
        uint256 takingAmount,
        uint256 skipPermitAndThresholdAmount
    ) external payable returns(uint256 actualMakingAmount, uint256 actualTakingAmount, bytes32 orderHash);

    /**
     * @notice Same as `fillOrderTo` but calls permit first,
     * allowing to approve token spending and make a swap in one transaction.
     * Also allows to specify funds destination instead of `msg.sender`
     * @dev See tests for examples
     * @param order Order quote to fill
     * @param signature Signature to confirm quote ownership
     * @param interaction A call data for InteractiveNotificationReceiver. Taker may execute interaction after getting maker assets and before sending taker assets.
     * @param makingAmount Making amount
     * @param takingAmount Taking amount
     * @param skipPermitAndThresholdAmount Specifies maximum allowed takingAmount when takingAmount is zero, otherwise specifies minimum allowed makingAmount. Top-most bit specifies whether taker wants to skip maker's permit.
     * @param target Address that will receive swap funds
     * @param permit Should consist of abiencoded token address and encoded `IERC20Permit.permit` call.
     * @return actualMakingAmount Actual amount transferred from maker to taker
     * @return actualTakingAmount Actual amount transferred from taker to maker
     * @return orderHash Hash of the filled order
     */
    function fillOrderToWithPermit(
        OrderLib.Order calldata order,
        bytes calldata signature,
        bytes calldata interaction,
        uint256 makingAmount,
        uint256 takingAmount,
        uint256 skipPermitAndThresholdAmount,
        address target,
        bytes calldata permit
    ) external returns(uint256 actualMakingAmount, uint256 actualTakingAmount, bytes32 orderHash);

    /**
     * @notice Same as `fillOrder` but allows to specify funds destination instead of `msg.sender`
     * @param order_ Order quote to fill
     * @param signature Signature to confirm quote ownership
     * @param interaction A call data for InteractiveNotificationReceiver. Taker may execute interaction after getting maker assets and before sending taker assets.
     * @param makingAmount Making amount
     * @param takingAmount Taking amount
     * @param skipPermitAndThresholdAmount Specifies maximum allowed takingAmount when takingAmount is zero, otherwise specifies minimum allowed makingAmount. Top-most bit specifies whether taker wants to skip maker's permit.
     * @param target Address that will receive swap funds
     * @return actualMakingAmount Actual amount transferred from maker to taker
     * @return actualTakingAmount Actual amount transferred from taker to maker
     * @return orderHash Hash of the filled order
     */
    function fillOrderTo(
        OrderLib.Order calldata order_,
        bytes calldata signature,
        bytes calldata interaction,
        uint256 makingAmount,
        uint256 takingAmount,
        uint256 skipPermitAndThresholdAmount,
        address target
    ) external payable returns(uint256 actualMakingAmount, uint256 actualTakingAmount, bytes32 orderHash);
}


// File @1inch/limit-order-protocol/contracts/interfaces/[email protected]


pragma solidity 0.8.17;

/// @title Interface for interactor which acts between `maker => taker` and `taker => maker` transfers.
interface PreInteractionNotificationReceiver {
    function fillOrderPreInteraction(
        bytes32 orderHash,
        address maker,
        address taker,
        uint256 makingAmount,
        uint256 takingAmount,
        uint256 remainingAmount,
        bytes memory interactiveData
    ) external;
}

interface PostInteractionNotificationReceiver {
    /// @notice Callback method that gets called after taker transferred funds to maker but before
    /// the opposite transfer happened
    function fillOrderPostInteraction(
        bytes32 orderHash,
        address maker,
        address taker,
        uint256 makingAmount,
        uint256 takingAmount,
        uint256 remainingAmount,
        bytes memory interactiveData
    ) external;
}

interface InteractionNotificationReceiver {
    function fillOrderInteraction(
        address taker,
        uint256 makingAmount,
        uint256 takingAmount,
        bytes memory interactiveData
    ) external returns(uint256 offeredTakingAmount);
}


// File @1inch/limit-order-protocol/contracts/[email protected]


pragma solidity 0.8.17;











/// @title Regular Limit Order mixin
abstract contract OrderMixin is IOrderMixin, EIP712, PredicateHelper {
    using SafeERC20 for IERC20;
    using ArgumentsDecoder for bytes;
    using OrderLib for OrderLib.Order;

    error UnknownOrder();
    error AccessDenied();
    error AlreadyFilled();
    error PermitLengthTooLow();
    error ZeroTargetIsForbidden();
    error RemainingAmountIsZero();
    error PrivateOrder();
    error BadSignature();
    error ReentrancyDetected();
    error PredicateIsNotTrue();
    error OnlyOneAmountShouldBeZero();
    error TakingAmountTooHigh();
    error MakingAmountTooLow();
    error SwapWithZeroAmount();
    error TransferFromMakerToTakerFailed();
    error TransferFromTakerToMakerFailed();
    error WrongAmount();
    error WrongGetter();
    error GetAmountCallFailed();
    error TakingAmountIncreased();
    error SimulationResults(bool success, bytes res);

    /// @notice Emitted every time order gets filled, including partial fills
    event OrderFilled(
        address indexed maker,
        bytes32 orderHash,
        uint256 remaining
    );

    /// @notice Emitted when order gets cancelled
    event OrderCanceled(
        address indexed maker,
        bytes32 orderHash,
        uint256 remainingRaw
    );

    uint256 constant private _ORDER_DOES_NOT_EXIST = 0;
    uint256 constant private _ORDER_FILLED = 1;
    uint256 constant private _SKIP_PERMIT_FLAG = 1 << 255;
    uint256 constant private _THRESHOLD_MASK = ~_SKIP_PERMIT_FLAG;

    IWETH private immutable _WETH;  // solhint-disable-line var-name-mixedcase
    /// @notice Stores unfilled amounts for each order plus one.
    /// Therefore 0 means order doesn't exist and 1 means order was filled
    mapping(bytes32 => uint256) private _remaining;

    constructor(IWETH weth) {
        _WETH = weth;
    }

    /**
     * @notice See {IOrderMixin-remaining}.
     */
    function remaining(bytes32 orderHash) external view returns(uint256 /* amount */) {
        uint256 amount = _remaining[orderHash];
        if (amount == _ORDER_DOES_NOT_EXIST) revert UnknownOrder();
        unchecked { return amount - 1; }
    }

    /**
     * @notice See {IOrderMixin-remainingRaw}.
     */
    function remainingRaw(bytes32 orderHash) external view returns(uint256 /* rawAmount */) {
        return _remaining[orderHash];
    }

    /**
     * @notice See {IOrderMixin-remainingsRaw}.
     */
    function remainingsRaw(bytes32[] memory orderHashes) external view returns(uint256[] memory /* rawAmounts */) {
        uint256[] memory results = new uint256[](orderHashes.length);
        for (uint256 i = 0; i < orderHashes.length; i++) {
            results[i] = _remaining[orderHashes[i]];
        }
        return results;
    }

    /**
     * @notice See {IOrderMixin-simulate}.
     */
    function simulate(address target, bytes calldata data) external {
        // solhint-disable-next-line avoid-low-level-calls
        (bool success, bytes memory result) = target.delegatecall(data);
        revert SimulationResults(success, result);
    }

    /**
     * @notice See {IOrderMixin-cancelOrder}.
     */
    function cancelOrder(OrderLib.Order calldata order) external returns(uint256 orderRemaining, bytes32 orderHash) {
        if (order.maker != msg.sender) revert AccessDenied();

        orderHash = hashOrder(order);
        orderRemaining = _remaining[orderHash];
        if (orderRemaining == _ORDER_FILLED) revert AlreadyFilled();
        emit OrderCanceled(msg.sender, orderHash, orderRemaining);
        _remaining[orderHash] = _ORDER_FILLED;
    }

    /**
     * @notice See {IOrderMixin-fillOrder}.
     */
    function fillOrder(
        OrderLib.Order calldata order,
        bytes calldata signature,
        bytes calldata interaction,
        uint256 makingAmount,
        uint256 takingAmount,
        uint256 skipPermitAndThresholdAmount
    ) external payable returns(uint256 /* actualMakingAmount */, uint256 /* actualTakingAmount */, bytes32 /* orderHash */) {
        return fillOrderTo(order, signature, interaction, makingAmount, takingAmount, skipPermitAndThresholdAmount, msg.sender);
    }

    /**
     * @notice See {IOrderMixin-fillOrderToWithPermit}.
     */
    function fillOrderToWithPermit(
        OrderLib.Order calldata order,
        bytes calldata signature,
        bytes calldata interaction,
        uint256 makingAmount,
        uint256 takingAmount,
        uint256 skipPermitAndThresholdAmount,
        address target,
        bytes calldata permit
    ) external returns(uint256 /* actualMakingAmount */, uint256 /* actualTakingAmount */, bytes32 /* orderHash */) {
        if (permit.length < 20) revert PermitLengthTooLow();
        {  // Stack too deep
            (address token, bytes calldata permitData) = permit.decodeTargetAndCalldata();
            IERC20(token).safePermit(permitData);
        }
        return fillOrderTo(order, signature, interaction, makingAmount, takingAmount, skipPermitAndThresholdAmount, target);
    }

    /**
     * @notice See {IOrderMixin-fillOrderTo}.
     */
    function fillOrderTo(
        OrderLib.Order calldata order_,
        bytes calldata signature,
        bytes calldata interaction,
        uint256 makingAmount,
        uint256 takingAmount,
        uint256 skipPermitAndThresholdAmount,
        address target
    ) public payable returns(uint256 actualMakingAmount, uint256 actualTakingAmount, bytes32 orderHash) {
        if (target == address(0)) revert ZeroTargetIsForbidden();
        orderHash = hashOrder(order_);

        OrderLib.Order calldata order = order_; // Helps with "Stack too deep"
        actualMakingAmount = makingAmount;
        actualTakingAmount = takingAmount;

        uint256 remainingMakingAmount = _remaining[orderHash];
        if (remainingMakingAmount == _ORDER_FILLED) revert RemainingAmountIsZero();
        if (order.allowedSender != address(0) && order.allowedSender != msg.sender) revert PrivateOrder();
        if (remainingMakingAmount == _ORDER_DOES_NOT_EXIST) {
            // First fill: validate order and permit maker asset
            if (!ECDSA.recoverOrIsValidSignature(order.maker, orderHash, signature)) revert BadSignature();
            remainingMakingAmount = order.makingAmount;

            bytes calldata permit = order.permit();
            if (skipPermitAndThresholdAmount & _SKIP_PERMIT_FLAG == 0 && permit.length >= 20) {
                // proceed only if taker is willing to execute permit and its length is enough to store address
                (address token, bytes calldata permitCalldata) = permit.decodeTargetAndCalldata();
                IERC20(token).safePermit(permitCalldata);
                if (_remaining[orderHash] != _ORDER_DOES_NOT_EXIST) revert ReentrancyDetected();
            }
        } else {
            unchecked { remainingMakingAmount -= 1; }
        }

        // Check if order is valid
        if (order.predicate().length > 0) {
            if (!checkPredicate(order)) revert PredicateIsNotTrue();
        }

        // Compute maker and taker assets amount
        if ((actualTakingAmount == 0) == (actualMakingAmount == 0)) {
            revert OnlyOneAmountShouldBeZero();
        } else if (actualTakingAmount == 0) {
            if (actualMakingAmount > remainingMakingAmount) {
                actualMakingAmount = remainingMakingAmount;
            }
            actualTakingAmount = _getTakingAmount(order.getTakingAmount(), order.makingAmount, actualMakingAmount, order.takingAmount, remainingMakingAmount, orderHash);
            uint256 thresholdAmount = skipPermitAndThresholdAmount & _THRESHOLD_MASK;
            // check that actual rate is not worse than what was expected
            // actualTakingAmount / actualMakingAmount <= thresholdAmount / makingAmount
            if (actualTakingAmount * makingAmount > thresholdAmount * actualMakingAmount) revert TakingAmountTooHigh();
        } else {
            actualMakingAmount = _getMakingAmount(order.getMakingAmount(), order.takingAmount, actualTakingAmount, order.makingAmount, remainingMakingAmount, orderHash);
            if (actualMakingAmount > remainingMakingAmount) {
                actualMakingAmount = remainingMakingAmount;
                actualTakingAmount = _getTakingAmount(order.getTakingAmount(), order.makingAmount, actualMakingAmount, order.takingAmount, remainingMakingAmount, orderHash);
                if (actualTakingAmount > takingAmount) revert TakingAmountIncreased();
            }
            uint256 thresholdAmount = skipPermitAndThresholdAmount & _THRESHOLD_MASK;
            // check that actual rate is not worse than what was expected
            // actualMakingAmount / actualTakingAmount >= thresholdAmount / takingAmount
            if (actualMakingAmount * takingAmount < thresholdAmount * actualTakingAmount) revert MakingAmountTooLow();
        }

        if (actualMakingAmount == 0 || actualTakingAmount == 0) revert SwapWithZeroAmount();

        // Update remaining amount in storage
        unchecked {
            remainingMakingAmount = remainingMakingAmount - actualMakingAmount;
            _remaining[orderHash] = remainingMakingAmount + 1;
        }
        emit OrderFilled(order_.maker, orderHash, remainingMakingAmount);

        // Maker can handle funds interactively
        if (order.preInteraction().length >= 20) {
            // proceed only if interaction length is enough to store address
            (address interactionTarget, bytes calldata interactionData) = order.preInteraction().decodeTargetAndCalldata();
            PreInteractionNotificationReceiver(interactionTarget).fillOrderPreInteraction(
                orderHash, order.maker, msg.sender, actualMakingAmount, actualTakingAmount, remainingMakingAmount, interactionData
            );
        }

        // Maker => Taker
        if (!_callTransferFrom(
            order.makerAsset,
            order.maker,
            target,
            actualMakingAmount,
            order.makerAssetData()
        )) revert TransferFromMakerToTakerFailed();

        if (interaction.length >= 20) {
            // proceed only if interaction length is enough to store address
            (address interactionTarget, bytes calldata interactionData) = interaction.decodeTargetAndCalldata();
            uint256 offeredTakingAmount = InteractionNotificationReceiver(interactionTarget).fillOrderInteraction(
                msg.sender, actualMakingAmount, actualTakingAmount, interactionData
            );

            if (offeredTakingAmount > actualTakingAmount &&
                !OrderLib.getterIsFrozen(order.getMakingAmount()) &&
                !OrderLib.getterIsFrozen(order.getTakingAmount()))
            {
                actualTakingAmount = offeredTakingAmount;
            }
        }

        // Taker => Maker
        if (order.takerAsset == address(_WETH) && msg.value > 0) {
            if (msg.value < actualTakingAmount) revert Errors.InvalidMsgValue();
            if (msg.value > actualTakingAmount) {
                unchecked {
                    (bool success, ) = msg.sender.call{value: msg.value - actualTakingAmount}("");  // solhint-disable-line avoid-low-level-calls
                    if (!success) revert Errors.ETHTransferFailed();
                }
            }
            _WETH.deposit{ value: actualTakingAmount }();
            _WETH.transfer(order.receiver == address(0) ? order.maker : order.receiver, actualTakingAmount);
        } else {
            if (msg.value != 0) revert Errors.InvalidMsgValue();
            if (!_callTransferFrom(
                order.takerAsset,
                msg.sender,
                order.receiver == address(0) ? order.maker : order.receiver,
                actualTakingAmount,
                order.takerAssetData()
            )) revert TransferFromTakerToMakerFailed();
        }

        // Maker can handle funds interactively
        if (order.postInteraction().length >= 20) {
            // proceed only if interaction length is enough to store address
            (address interactionTarget, bytes calldata interactionData) = order.postInteraction().decodeTargetAndCalldata();
            PostInteractionNotificationReceiver(interactionTarget).fillOrderPostInteraction(
                 orderHash, order.maker, msg.sender, actualMakingAmount, actualTakingAmount, remainingMakingAmount, interactionData
            );
        }
    }

    /**
     * @notice See {IOrderMixin-checkPredicate}.
     */
    function checkPredicate(OrderLib.Order calldata order) public view returns(bool) {
        (bool success, uint256 res) = _selfStaticCall(order.predicate());
        return success && res == 1;
    }

    /**
     * @notice See {IOrderMixin-hashOrder}.
     */
    function hashOrder(OrderLib.Order calldata order) public view returns(bytes32) {
        return order.hash(_domainSeparatorV4());
    }

    function _callTransferFrom(address asset, address from, address to, uint256 amount, bytes calldata input) private returns(bool success) {
        bytes4 selector = IERC20.transferFrom.selector;
        /// @solidity memory-safe-assembly
        assembly { // solhint-disable-line no-inline-assembly
            let data := mload(0x40)

            mstore(data, selector)
            mstore(add(data, 0x04), from)
            mstore(add(data, 0x24), to)
            mstore(add(data, 0x44), amount)
            calldatacopy(add(data, 0x64), input.offset, input.length)
            let status := call(gas(), asset, 0, data, add(0x64, input.length), 0x0, 0x20)
            success := and(status, or(iszero(returndatasize()), and(gt(returndatasize(), 31), eq(mload(0), 1))))
        }
    }

    function _getMakingAmount(
        bytes calldata getter,
        uint256 orderTakingAmount,
        uint256 requestedTakingAmount,
        uint256 orderMakingAmount,
        uint256 remainingMakingAmount,
        bytes32 orderHash
    ) private view returns(uint256) {
        if (getter.length == 0) {
            // Linear proportion
            return AmountCalculator.getMakingAmount(orderMakingAmount, orderTakingAmount, requestedTakingAmount);
        }
        return _callGetter(getter, orderTakingAmount, requestedTakingAmount, orderMakingAmount, remainingMakingAmount, orderHash);
    }

    function _getTakingAmount(
        bytes calldata getter,
        uint256 orderMakingAmount,
        uint256 requestedMakingAmount,
        uint256 orderTakingAmount,
        uint256 remainingMakingAmount,
        bytes32 orderHash
    ) private view returns(uint256) {
        if (getter.length == 0) {
            // Linear proportion
            return AmountCalculator.getTakingAmount(orderMakingAmount, orderTakingAmount, requestedMakingAmount);
        }
        return _callGetter(getter, orderMakingAmount, requestedMakingAmount, orderTakingAmount, remainingMakingAmount, orderHash);
    }

    function _callGetter(
        bytes calldata getter,
        uint256 orderExpectedAmount,
        uint256 requestedAmount,
        uint256 orderResultAmount,
        uint256 remainingMakingAmount,
        bytes32 orderHash
    ) private view returns(uint256) {
        if (getter.length == 1) {
            if (OrderLib.getterIsFrozen(getter)) {
                // On "x" getter calldata only exact amount is allowed
                if (requestedAmount != orderExpectedAmount) revert WrongAmount();
                return orderResultAmount;
            } else {
                revert WrongGetter();
            }
        } else {
            (address target, bytes calldata data) = getter.decodeTargetAndCalldata();
            (bool success, bytes memory result) = target.staticcall(abi.encodePacked(data, requestedAmount, remainingMakingAmount, orderHash));
            if (!success || result.length != 32) revert GetAmountCallFailed();
            return abi.decode(result, (uint256));
        }
    }
}


// File @openzeppelin/contracts/utils/[email protected]

// OpenZeppelin Contracts v4.4.1 (utils/Context.sol)

pragma solidity ^0.8.0;

/**
 * @dev Provides information about the current execution context, including the
 * sender of the transaction and its data. While these are generally available
 * via msg.sender and msg.data, they should not be accessed in such a direct
 * manner, since when dealing with meta-transactions the account sending and
 * paying for execution may not be the actual sender (as far as an application
 * is concerned).
 *
 * This contract is only required for intermediate, library-like contracts.
 */
abstract contract Context {
    function _msgSender() internal view virtual returns (address) {
        return msg.sender;
    }

    function _msgData() internal view virtual returns (bytes calldata) {
        return msg.data;
    }
}


// File @openzeppelin/contracts/access/[email protected]

// OpenZeppelin Contracts (last updated v4.7.0) (access/Ownable.sol)

pragma solidity ^0.8.0;

/**
 * @dev Contract module which provides a basic access control mechanism, where
 * there is an account (an owner) that can be granted exclusive access to
 * specific functions.
 *
 * By default, the owner account will be the one that deploys the contract. This
 * can later be changed with {transferOwnership}.
 *
 * This module is used through inheritance. It will make available the modifier
 * `onlyOwner`, which can be applied to your functions to restrict their use to
 * the owner.
 */
abstract contract Ownable is Context {
    address private _owner;

    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);

    /**
     * @dev Initializes the contract setting the deployer as the initial owner.
     */
    constructor() {
        _transferOwnership(_msgSender());
    }

    /**
     * @dev Throws if called by any account other than the owner.
     */
    modifier onlyOwner() {
        _checkOwner();
        _;
    }

    /**
     * @dev Returns the address of the current owner.
     */
    function owner() public view virtual returns (address) {
        return _owner;
    }

    /**
     * @dev Throws if the sender is not the owner.
     */
    function _checkOwner() internal view virtual {
        require(owner() == _msgSender(), "Ownable: caller is not the owner");
    }

    /**
     * @dev Leaves the contract without owner. It will not be possible to call
     * `onlyOwner` functions anymore. Can only be called by the current owner.
     *
     * NOTE: Renouncing ownership will leave the contract without an owner,
     * thereby removing any functionality that is only available to the owner.
     */
    function renounceOwnership() public virtual onlyOwner {
        _transferOwnership(address(0));
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Can only be called by the current owner.
     */
    function transferOwnership(address newOwner) public virtual onlyOwner {
        require(newOwner != address(0), "Ownable: new owner is the zero address");
        _transferOwnership(newOwner);
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Internal function without access restriction.
     */
    function _transferOwnership(address newOwner) internal virtual {
        address oldOwner = _owner;
        _owner = newOwner;
        emit OwnershipTransferred(oldOwner, newOwner);
    }
}


// File contracts/AggregationRouterV5.sol


pragma solidity 0.8.17;









/// @notice Main contract incorporates a number of routers to perform swaps and limit orders protocol to fill limit orders
contract AggregationRouterV5 is EIP712("1inch Aggregation Router", "5"), Ownable,
    ClipperRouter, GenericRouter, UnoswapRouter, UnoswapV3Router, OrderMixin, OrderRFQMixin
{
    using UniERC20 for IERC20;

    error ZeroAddress();

    /**
     * @dev Sets the wrapped eth token and clipper exhange interface
     * Both values are immutable: they can only be set once during
     * construction.
     */
    constructor(IWETH weth)
        UnoswapV3Router(weth)
        ClipperRouter(weth)
        OrderMixin(weth)
        OrderRFQMixin(weth)
    {
        if (address(weth) == address(0)) revert ZeroAddress();
    }

    /**
     * @notice Retrieves funds accidently sent directly to the contract address
     * @param token ERC20 token to retrieve
     * @param amount amount to retrieve
     */
    function rescueFunds(IERC20 token, uint256 amount) external onlyOwner {
        token.uniTransfer(payable(msg.sender), amount);
    }

    /**
     * @notice Destroys the contract and sends eth to sender. Use with caution.
     * The only case when the use of the method is justified is if there is an exploit found.
     * And the damage from the exploit is greater than from just an urgent contract change.
     */
    function destroy() external onlyOwner {
        selfdestruct(payable(msg.sender));
    }

    function _receive() internal override(EthReceiver, OnlyWethReceiver) {
        EthReceiver._receive();
    }
}

// File: contracts/interfaces/IUniswapV2Pair.sol

pragma solidity >=0.5.0;

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

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

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

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

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

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

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

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

    function initialize(address, address) external;
}

// File: contracts/interfaces/IUniswapV2ERC20.sol

pragma solidity >=0.5.0;

interface IUniswapV2ERC20 {
    event Approval(address indexed owner, address indexed spender, uint value);
    event Transfer(address indexed from, address indexed to, uint value);

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

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

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

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

// File: contracts/libraries/SafeMath.sol

pragma solidity =0.5.16;

// a library for performing overflow-safe math, courtesy of DappHub (https://github.com/dapphub/ds-math)

library SafeMath {
    function add(uint x, uint y) internal pure returns (uint z) {
        require((z = x + y) >= x, 'ds-math-add-overflow');
    }

    function sub(uint x, uint y) internal pure returns (uint z) {
        require((z = x - y) <= x, 'ds-math-sub-underflow');
    }

    function mul(uint x, uint y) internal pure returns (uint z) {
        require(y == 0 || (z = x * y) / y == x, 'ds-math-mul-overflow');
    }
}

// File: contracts/UniswapV2ERC20.sol

pragma solidity =0.5.16;



contract UniswapV2ERC20 is IUniswapV2ERC20 {
    using SafeMath for uint;

    string public constant name = 'Uniswap V2';
    string public constant symbol = 'UNI-V2';
    uint8 public constant decimals = 18;
    uint  public totalSupply;
    mapping(address => uint) public balanceOf;
    mapping(address => mapping(address => uint)) public allowance;

    bytes32 public DOMAIN_SEPARATOR;
    // keccak256("Permit(address owner,address spender,uint256 value,uint256 nonce,uint256 deadline)");
    bytes32 public constant PERMIT_TYPEHASH = 0x6e71edae12b1b97f4d1f60370fef10105fa2faae0126114a169c64845d6126c9;
    mapping(address => uint) public nonces;

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

    constructor() public {
        uint chainId;
        assembly {
            chainId := chainid
        }
        DOMAIN_SEPARATOR = keccak256(
            abi.encode(
                keccak256('EIP712Domain(string name,string version,uint256 chainId,address verifyingContract)'),
                keccak256(bytes(name)),
                keccak256(bytes('1')),
                chainId,
                address(this)
            )
        );
    }

    function _mint(address to, uint value) internal {
        totalSupply = totalSupply.add(value);
        balanceOf[to] = balanceOf[to].add(value);
        emit Transfer(address(0), to, value);
    }

    function _burn(address from, uint value) internal {
        balanceOf[from] = balanceOf[from].sub(value);
        totalSupply = totalSupply.sub(value);
        emit Transfer(from, address(0), value);
    }

    function _approve(address owner, address spender, uint value) private {
        allowance[owner][spender] = value;
        emit Approval(owner, spender, value);
    }

    function _transfer(address from, address to, uint value) private {
        balanceOf[from] = balanceOf[from].sub(value);
        balanceOf[to] = balanceOf[to].add(value);
        emit Transfer(from, to, value);
    }

    function approve(address spender, uint value) external returns (bool) {
        _approve(msg.sender, spender, value);
        return true;
    }

    function transfer(address to, uint value) external returns (bool) {
        _transfer(msg.sender, to, value);
        return true;
    }

    function transferFrom(address from, address to, uint value) external returns (bool) {
        if (allowance[from][msg.sender] != uint(-1)) {
            allowance[from][msg.sender] = allowance[from][msg.sender].sub(value);
        }
        _transfer(from, to, value);
        return true;
    }

    function permit(address owner, address spender, uint value, uint deadline, uint8 v, bytes32 r, bytes32 s) external {
        require(deadline >= block.timestamp, 'UniswapV2: EXPIRED');
        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, 'UniswapV2: INVALID_SIGNATURE');
        _approve(owner, spender, value);
    }
}

// File: contracts/libraries/Math.sol

pragma solidity =0.5.16;

// a library for performing various math operations

library Math {
    function min(uint x, uint y) internal pure returns (uint z) {
        z = x < y ? x : y;
    }

    // babylonian method (https://en.wikipedia.org/wiki/Methods_of_computing_square_roots#Babylonian_method)
    function sqrt(uint y) internal pure returns (uint z) {
        if (y > 3) {
            z = y;
            uint x = y / 2 + 1;
            while (x < z) {
                z = x;
                x = (y / x + x) / 2;
            }
        } else if (y != 0) {
            z = 1;
        }
    }
}

// File: contracts/libraries/UQ112x112.sol

pragma solidity =0.5.16;

// a library for handling binary fixed point numbers (https://en.wikipedia.org/wiki/Q_(number_format))

// range: [0, 2**112 - 1]
// resolution: 1 / 2**112

library UQ112x112 {
    uint224 constant Q112 = 2**112;

    // encode a uint112 as a UQ112x112
    function encode(uint112 y) internal pure returns (uint224 z) {
        z = uint224(y) * Q112; // never overflows
    }

    // divide a UQ112x112 by a uint112, returning a UQ112x112
    function uqdiv(uint224 x, uint112 y) internal pure returns (uint224 z) {
        z = x / uint224(y);
    }
}

// File: contracts/interfaces/IERC20.sol

pragma solidity >=0.5.0;

interface IERC20 {
    event Approval(address indexed owner, address indexed spender, uint value);
    event Transfer(address indexed from, address indexed to, uint value);

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

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

// File: contracts/interfaces/IUniswapV2Factory.sol

pragma solidity >=0.5.0;

interface IUniswapV2Factory {
    event PairCreated(address indexed token0, address indexed token1, address pair, uint);

    function feeTo() external view returns (address);
    function feeToSetter() external view returns (address);

    function getPair(address tokenA, address tokenB) external view returns (address pair);
    function allPairs(uint) external view returns (address pair);
    function allPairsLength() external view returns (uint);

    function createPair(address tokenA, address tokenB) external returns (address pair);

    function setFeeTo(address) external;
    function setFeeToSetter(address) external;
}

// File: contracts/interfaces/IUniswapV2Callee.sol

pragma solidity >=0.5.0;

interface IUniswapV2Callee {
    function uniswapV2Call(address sender, uint amount0, uint amount1, bytes calldata data) external;
}

// File: contracts/UniswapV2Pair.sol

pragma solidity =0.5.16;








contract UniswapV2Pair is IUniswapV2Pair, UniswapV2ERC20 {
    using SafeMath  for uint;
    using UQ112x112 for uint224;

    uint public constant MINIMUM_LIQUIDITY = 10**3;
    bytes4 private constant SELECTOR = bytes4(keccak256(bytes('transfer(address,uint256)')));

    address public factory;
    address public token0;
    address public token1;

    uint112 private reserve0;           // uses single storage slot, accessible via getReserves
    uint112 private reserve1;           // uses single storage slot, accessible via getReserves
    uint32  private blockTimestampLast; // uses single storage slot, accessible via getReserves

    uint public price0CumulativeLast;
    uint public price1CumulativeLast;
    uint public kLast; // reserve0 * reserve1, as of immediately after the most recent liquidity event

    uint private unlocked = 1;
    modifier lock() {
        require(unlocked == 1, 'UniswapV2: LOCKED');
        unlocked = 0;
        _;
        unlocked = 1;
    }

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

    function _safeTransfer(address token, address to, uint value) private {
        (bool success, bytes memory data) = token.call(abi.encodeWithSelector(SELECTOR, to, value));
        require(success && (data.length == 0 || abi.decode(data, (bool))), 'UniswapV2: TRANSFER_FAILED');
    }

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

    constructor() public {
        factory = msg.sender;
    }

    // called once by the factory at time of deployment
    function initialize(address _token0, address _token1) external {
        require(msg.sender == factory, 'UniswapV2: FORBIDDEN'); // sufficient check
        token0 = _token0;
        token1 = _token1;
    }

    // update reserves and, on the first call per block, price accumulators
    function _update(uint balance0, uint balance1, uint112 _reserve0, uint112 _reserve1) private {
        require(balance0 <= uint112(-1) && balance1 <= uint112(-1), 'UniswapV2: OVERFLOW');
        uint32 blockTimestamp = uint32(block.timestamp % 2**32);
        uint32 timeElapsed = blockTimestamp - blockTimestampLast; // overflow is desired
        if (timeElapsed > 0 && _reserve0 != 0 && _reserve1 != 0) {
            // * never overflows, and + overflow is desired
            price0CumulativeLast += uint(UQ112x112.encode(_reserve1).uqdiv(_reserve0)) * timeElapsed;
            price1CumulativeLast += uint(UQ112x112.encode(_reserve0).uqdiv(_reserve1)) * timeElapsed;
        }
        reserve0 = uint112(balance0);
        reserve1 = uint112(balance1);
        blockTimestampLast = blockTimestamp;
        emit Sync(reserve0, reserve1);
    }

    // if fee is on, mint liquidity equivalent to 1/6th of the growth in sqrt(k)
    function _mintFee(uint112 _reserve0, uint112 _reserve1) private returns (bool feeOn) {
        address feeTo = IUniswapV2Factory(factory).feeTo();
        feeOn = feeTo != address(0);
        uint _kLast = kLast; // gas savings
        if (feeOn) {
            if (_kLast != 0) {
                uint rootK = Math.sqrt(uint(_reserve0).mul(_reserve1));
                uint rootKLast = Math.sqrt(_kLast);
                if (rootK > rootKLast) {
                    uint numerator = totalSupply.mul(rootK.sub(rootKLast));
                    uint denominator = rootK.mul(5).add(rootKLast);
                    uint liquidity = numerator / denominator;
                    if (liquidity > 0) _mint(feeTo, liquidity);
                }
            }
        } else if (_kLast != 0) {
            kLast = 0;
        }
    }

    // this low-level function should be called from a contract which performs important safety checks
    function mint(address to) external lock returns (uint liquidity) {
        (uint112 _reserve0, uint112 _reserve1,) = getReserves(); // gas savings
        uint balance0 = IERC20(token0).balanceOf(address(this));
        uint balance1 = IERC20(token1).balanceOf(address(this));
        uint amount0 = balance0.sub(_reserve0);
        uint amount1 = balance1.sub(_reserve1);

        bool feeOn = _mintFee(_reserve0, _reserve1);
        uint _totalSupply = totalSupply; // gas savings, must be defined here since totalSupply can update in _mintFee
        if (_totalSupply == 0) {
            liquidity = Math.sqrt(amount0.mul(amount1)).sub(MINIMUM_LIQUIDITY);
           _mint(address(0), MINIMUM_LIQUIDITY); // permanently lock the first MINIMUM_LIQUIDITY tokens
        } else {
            liquidity = Math.min(amount0.mul(_totalSupply) / _reserve0, amount1.mul(_totalSupply) / _reserve1);
        }
        require(liquidity > 0, 'UniswapV2: INSUFFICIENT_LIQUIDITY_MINTED');
        _mint(to, liquidity);

        _update(balance0, balance1, _reserve0, _reserve1);
        if (feeOn) kLast = uint(reserve0).mul(reserve1); // reserve0 and reserve1 are up-to-date
        emit Mint(msg.sender, amount0, amount1);
    }

    // this low-level function should be called from a contract which performs important safety checks
    function burn(address to) external lock returns (uint amount0, uint amount1) {
        (uint112 _reserve0, uint112 _reserve1,) = getReserves(); // gas savings
        address _token0 = token0;                                // gas savings
        address _token1 = token1;                                // gas savings
        uint balance0 = IERC20(_token0).balanceOf(address(this));
        uint balance1 = IERC20(_token1).balanceOf(address(this));
        uint liquidity = balanceOf[address(this)];

        bool feeOn = _mintFee(_reserve0, _reserve1);
        uint _totalSupply = totalSupply; // gas savings, must be defined here since totalSupply can update in _mintFee
        amount0 = liquidity.mul(balance0) / _totalSupply; // using balances ensures pro-rata distribution
        amount1 = liquidity.mul(balance1) / _totalSupply; // using balances ensures pro-rata distribution
        require(amount0 > 0 && amount1 > 0, 'UniswapV2: INSUFFICIENT_LIQUIDITY_BURNED');
        _burn(address(this), liquidity);
        _safeTransfer(_token0, to, amount0);
        _safeTransfer(_token1, to, amount1);
        balance0 = IERC20(_token0).balanceOf(address(this));
        balance1 = IERC20(_token1).balanceOf(address(this));

        _update(balance0, balance1, _reserve0, _reserve1);
        if (feeOn) kLast = uint(reserve0).mul(reserve1); // reserve0 and reserve1 are up-to-date
        emit Burn(msg.sender, amount0, amount1, to);
    }

    // this low-level function should be called from a contract which performs important safety checks
    function swap(uint amount0Out, uint amount1Out, address to, bytes calldata data) external lock {
        require(amount0Out > 0 || amount1Out > 0, 'UniswapV2: INSUFFICIENT_OUTPUT_AMOUNT');
        (uint112 _reserve0, uint112 _reserve1,) = getReserves(); // gas savings
        require(amount0Out < _reserve0 && amount1Out < _reserve1, 'UniswapV2: INSUFFICIENT_LIQUIDITY');

        uint balance0;
        uint balance1;
        { // scope for _token{0,1}, avoids stack too deep errors
        address _token0 = token0;
        address _token1 = token1;
        require(to != _token0 && to != _token1, 'UniswapV2: INVALID_TO');
        if (amount0Out > 0) _safeTransfer(_token0, to, amount0Out); // optimistically transfer tokens
        if (amount1Out > 0) _safeTransfer(_token1, to, amount1Out); // optimistically transfer tokens
        if (data.length > 0) IUniswapV2Callee(to).uniswapV2Call(msg.sender, amount0Out, amount1Out, data);
        balance0 = IERC20(_token0).balanceOf(address(this));
        balance1 = IERC20(_token1).balanceOf(address(this));
        }
        uint amount0In = balance0 > _reserve0 - amount0Out ? balance0 - (_reserve0 - amount0Out) : 0;
        uint amount1In = balance1 > _reserve1 - amount1Out ? balance1 - (_reserve1 - amount1Out) : 0;
        require(amount0In > 0 || amount1In > 0, 'UniswapV2: INSUFFICIENT_INPUT_AMOUNT');
        { // scope for reserve{0,1}Adjusted, avoids stack too deep errors
        uint balance0Adjusted = balance0.mul(1000).sub(amount0In.mul(3));
        uint balance1Adjusted = balance1.mul(1000).sub(amount1In.mul(3));
        require(balance0Adjusted.mul(balance1Adjusted) >= uint(_reserve0).mul(_reserve1).mul(1000**2), 'UniswapV2: K');
        }

        _update(balance0, balance1, _reserve0, _reserve1);
        emit Swap(msg.sender, amount0In, amount1In, amount0Out, amount1Out, to);
    }

    // force balances to match reserves
    function skim(address to) external lock {
        address _token0 = token0; // gas savings
        address _token1 = token1; // gas savings
        _safeTransfer(_token0, to, IERC20(_token0).balanceOf(address(this)).sub(reserve0));
        _safeTransfer(_token1, to, IERC20(_token1).balanceOf(address(this)).sub(reserve1));
    }

    // force reserves to match balances
    function sync() external lock {
        _update(IERC20(token0).balanceOf(address(this)), IERC20(token1).balanceOf(address(this)), reserve0, reserve1);
    }
}

// @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
// @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
// @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
// @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@B7~&@@@@@@@@@@@@@@@@G!:&@@@@@@@@@@@@@@@&5~.&@@@@@@@@@@@@@@@@@@@
// @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@&P~    P@@@@@@@@@@@@&Y^    G@@@@@@@@@@@@#J:    G@@@@@@@@@@@@@@@@@@@
// @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@#J:       G@@@@@@@@@B7.       G@@@@@@@@&G!.       G@@@@@@@@@@@@@@@@@@@
// @@@@@@@@@@@@@@@@@@@@@@@@@@@G!.          G@@@@@&P~           B@@@@@&Y:           G@@@@@@@@@@@@@@@@@@@
// @@@@@@@@@@@@@@@@@@@@@@@&Y^              ~&&#J:              ^#&B7.              G@@@@@@@@@@@@@@@@@@@
// @@@@@@@@@@@@@@@@@@@@#7.                                                         &@@@@@@@@@@@@@@@@@@@
// @@@@@@@@@@@@@@@@@@@G                                                         ^5&@@@@@@@@@@@@@@@@@@@@
// @@@@@@@@@@@@@@@@@@@J              ^5&@&:              ~P&@&:             .7B@@@@@@@@@@@@@@@@@@@@@@@@
// @@@@@@@@@@@@@@@@@@@J          .!G@@@@@@J          .?B@@@@@@J          :Y#@@@@@@@@@@@@@@@@@@@@@@@@@@@
// @@@@@@@@@@@@@@@@@@@J       :J#@@@@@@@@@J       ^5&@@@@@@@@@?      .~P&@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
// @@@@@@@@@@@@@@@@@@@J    ~P&@@@@@@@@@@@@J   .7B@@@@@@@@@@@@@?   :?#@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
// @@@@@@@@@@@@@@@@@@@B^?B@@@@@@@@@@@@@@@@B~J#@@@@@@@@@@@@@@@@#!5&@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
// @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
// @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
// @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
//
//          Telegram: t.me/GeorgeBush888
//          Twitter:  twitter.com/bush_skater
//          Website:  https://georgebush888.com
//
// @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
// @@                                                                                                @@
// @@   This token was launched using software provided by Metadrop. To learn more or to launch      @@
// @@   your own token, visit: https://metadrop.com. See legal info at the end of this file.         @@
// @@                                                                                                @@
// @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
//
// SPDX-License-Identifier: BUSL-1.1
// Metadrop Contracts (v2.1.0)
//// Sources flattened with hardhat v2.17.2 https://hardhat.org

// File @openzeppelin/contracts/token/ERC20/[email protected]

// OpenZeppelin Contracts (last updated v4.9.0) (token/ERC20/IERC20.sol)

pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC20 standard as defined in the EIP.
 */
interface IERC20 {
    /**
     * @dev Emitted when `value` tokens are moved from one account (`from`) to
     * another (`to`).
     *
     * Note that `value` may be zero.
     */
    event Transfer(address indexed from, address indexed to, uint256 value);

    /**
     * @dev Emitted when the allowance of a `spender` for an `owner` is set by
     * a call to {approve}. `value` is the new allowance.
     */
    event Approval(address indexed owner, address indexed spender, uint256 value);

    /**
     * @dev Returns the amount of tokens in existence.
     */
    function totalSupply() external view returns (uint256);

    /**
     * @dev Returns the amount of tokens owned by `account`.
     */
    function balanceOf(address account) external view returns (uint256);

    /**
     * @dev Moves `amount` tokens from the caller's account to `to`.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transfer(address to, uint256 amount) external returns (bool);

    /**
     * @dev Returns the remaining number of tokens that `spender` will be
     * allowed to spend on behalf of `owner` through {transferFrom}. This is
     * zero by default.
     *
     * This value changes when {approve} or {transferFrom} are called.
     */
    function allowance(address owner, address spender) external view returns (uint256);

    /**
     * @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * IMPORTANT: Beware that changing an allowance with this method brings the risk
     * that someone may use both the old and the new allowance by unfortunate
     * transaction ordering. One possible solution to mitigate this race
     * condition is to first reduce the spender's allowance to 0 and set the
     * desired value afterwards:
     * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
     *
     * Emits an {Approval} event.
     */
    function approve(address spender, uint256 amount) external returns (bool);

    /**
     * @dev Moves `amount` tokens from `from` to `to` using the
     * allowance mechanism. `amount` is then deducted from the caller's
     * allowance.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transferFrom(address from, address to, uint256 amount) external returns (bool);
}

// File @openzeppelin/contracts/token/ERC20/extensions/[email protected]

// OpenZeppelin Contracts v4.4.1 (token/ERC20/extensions/IERC20Metadata.sol)

pragma solidity ^0.8.0;

/**
 * @dev Interface for the optional metadata functions from the ERC20 standard.
 *
 * _Available since v4.1._
 */
interface IERC20Metadata is IERC20 {
    /**
     * @dev Returns the name of the token.
     */
    function name() external view returns (string memory);

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

    /**
     * @dev Returns the decimals places of the token.
     */
    function decimals() external view returns (uint8);
}

// File @uniswap/v2-periphery/contracts/interfaces/[email protected]

pragma solidity >=0.6.2;

interface IUniswapV2Router01 {
    function factory() external pure returns (address);
    function WETH() external pure returns (address);

    function addLiquidity(
        address tokenA,
        address tokenB,
        uint amountADesired,
        uint amountBDesired,
        uint amountAMin,
        uint amountBMin,
        address to,
        uint deadline
    ) external returns (uint amountA, uint amountB, uint liquidity);
    function addLiquidityETH(
        address token,
        uint amountTokenDesired,
        uint amountTokenMin,
        uint amountETHMin,
        address to,
        uint deadline
    ) external payable returns (uint amountToken, uint amountETH, uint liquidity);
    function removeLiquidity(
        address tokenA,
        address tokenB,
        uint liquidity,
        uint amountAMin,
        uint amountBMin,
        address to,
        uint deadline
    ) external returns (uint amountA, uint amountB);
    function removeLiquidityETH(
        address token,
        uint liquidity,
        uint amountTokenMin,
        uint amountETHMin,
        address to,
        uint deadline
    ) external returns (uint amountToken, uint amountETH);
    function removeLiquidityWithPermit(
        address tokenA,
        address tokenB,
        uint liquidity,
        uint amountAMin,
        uint amountBMin,
        address to,
        uint deadline,
        bool approveMax, uint8 v, bytes32 r, bytes32 s
    ) external returns (uint amountA, uint amountB);
    function removeLiquidityETHWithPermit(
        address token,
        uint liquidity,
        uint amountTokenMin,
        uint amountETHMin,
        address to,
        uint deadline,
        bool approveMax, uint8 v, bytes32 r, bytes32 s
    ) external returns (uint amountToken, uint amountETH);
    function swapExactTokensForTokens(
        uint amountIn,
        uint amountOutMin,
        address[] calldata path,
        address to,
        uint deadline
    ) external returns (uint[] memory amounts);
    function swapTokensForExactTokens(
        uint amountOut,
        uint amountInMax,
        address[] calldata path,
        address to,
        uint deadline
    ) external returns (uint[] memory amounts);
    function swapExactETHForTokens(uint amountOutMin, address[] calldata path, address to, uint deadline)
        external
        payable
        returns (uint[] memory amounts);
    function swapTokensForExactETH(uint amountOut, uint amountInMax, address[] calldata path, address to, uint deadline)
        external
        returns (uint[] memory amounts);
    function swapExactTokensForETH(uint amountIn, uint amountOutMin, address[] calldata path, address to, uint deadline)
        external
        returns (uint[] memory amounts);
    function swapETHForExactTokens(uint amountOut, address[] calldata path, address to, uint deadline)
        external
        payable
        returns (uint[] memory amounts);

    function quote(uint amountA, uint reserveA, uint reserveB) external pure returns (uint amountB);
    function getAmountOut(uint amountIn, uint reserveIn, uint reserveOut) external pure returns (uint amountOut);
    function getAmountIn(uint amountOut, uint reserveIn, uint reserveOut) external pure returns (uint amountIn);
    function getAmountsOut(uint amountIn, address[] calldata path) external view returns (uint[] memory amounts);
    function getAmountsIn(uint amountOut, address[] calldata path) external view returns (uint[] memory amounts);
}

// File @uniswap/v2-periphery/contracts/interfaces/[email protected]

pragma solidity >=0.6.2;

interface IUniswapV2Router02 is IUniswapV2Router01 {
    function removeLiquidityETHSupportingFeeOnTransferTokens(
        address token,
        uint liquidity,
        uint amountTokenMin,
        uint amountETHMin,
        address to,
        uint deadline
    ) external returns (uint amountETH);
    function removeLiquidityETHWithPermitSupportingFeeOnTransferTokens(
        address token,
        uint liquidity,
        uint amountTokenMin,
        uint amountETHMin,
        address to,
        uint deadline,
        bool approveMax, uint8 v, bytes32 r, bytes32 s
    ) external returns (uint amountETH);

    function swapExactTokensForTokensSupportingFeeOnTransferTokens(
        uint amountIn,
        uint amountOutMin,
        address[] calldata path,
        address to,
        uint deadline
    ) external;
    function swapExactETHForTokensSupportingFeeOnTransferTokens(
        uint amountOutMin,
        address[] calldata path,
        address to,
        uint deadline
    ) external payable;
    function swapExactTokensForETHSupportingFeeOnTransferTokens(
        uint amountIn,
        uint amountOutMin,
        address[] calldata path,
        address to,
        uint deadline
    ) external;
}

// File @openzeppelin/contracts/utils/[email protected]

// OpenZeppelin Contracts v4.4.1 (utils/Context.sol)

pragma solidity ^0.8.0;

/**
 * @dev Provides information about the current execution context, including the
 * sender of the transaction and its data. While these are generally available
 * via msg.sender and msg.data, they should not be accessed in such a direct
 * manner, since when dealing with meta-transactions the account sending and
 * paying for execution may not be the actual sender (as far as an application
 * is concerned).
 *
 * This contract is only required for intermediate, library-like contracts.
 */
abstract contract Context {
    function _msgSender() internal view virtual returns (address) {
        return msg.sender;
    }

    function _msgData() internal view virtual returns (bytes calldata) {
        return msg.data;
    }
}

// File @openzeppelin/contracts/utils/structs/[email protected]

// OpenZeppelin Contracts (last updated v4.9.0) (utils/structs/EnumerableSet.sol)
// This file was procedurally generated from scripts/generate/templates/EnumerableSet.js.

pragma solidity ^0.8.0;

/**
 * @dev Library for managing
 * https://en.wikipedia.org/wiki/Set_(abstract_data_type)[sets] of primitive
 * types.
 *
 * Sets have the following properties:
 *
 * - Elements are added, removed, and checked for existence in constant time
 * (O(1)).
 * - Elements are enumerated in O(n). No guarantees are made on the ordering.
 *
 * ```solidity
 * contract Example {
 *     // Add the library methods
 *     using EnumerableSet for EnumerableSet.AddressSet;
 *
 *     // Declare a set state variable
 *     EnumerableSet.AddressSet private mySet;
 * }
 * ```
 *
 * As of v3.3.0, sets of type `bytes32` (`Bytes32Set`), `address` (`AddressSet`)
 * and `uint256` (`UintSet`) are supported.
 *
 * [WARNING]
 * ====
 * Trying to delete such a structure from storage will likely result in data corruption, rendering the structure
 * unusable.
 * See https://github.com/ethereum/solidity/pull/11843[ethereum/solidity#11843] for more info.
 *
 * In order to clean an EnumerableSet, you can either remove all elements one by one or create a fresh instance using an
 * array of EnumerableSet.
 * ====
 */
library EnumerableSet {
    // To implement this library for multiple types with as little code
    // repetition as possible, we write it in terms of a generic Set type with
    // bytes32 values.
    // The Set implementation uses private functions, and user-facing
    // implementations (such as AddressSet) are just wrappers around the
    // underlying Set.
    // This means that we can only create new EnumerableSets for types that fit
    // in bytes32.

    struct Set {
        // Storage of set values
        bytes32[] _values;
        // Position of the value in the `values` array, plus 1 because index 0
        // means a value is not in the set.
        mapping(bytes32 => uint256) _indexes;
    }

    /**
     * @dev Add a value to a set. O(1).
     *
     * Returns true if the value was added to the set, that is if it was not
     * already present.
     */
    function _add(Set storage set, bytes32 value) private returns (bool) {
        if (!_contains(set, value)) {
            set._values.push(value);
            // The value is stored at length-1, but we add 1 to all indexes
            // and use 0 as a sentinel value
            set._indexes[value] = set._values.length;
            return true;
        } else {
            return false;
        }
    }

    /**
     * @dev Removes a value from a set. O(1).
     *
     * Returns true if the value was removed from the set, that is if it was
     * present.
     */
    function _remove(Set storage set, bytes32 value) private returns (bool) {
        // We read and store the value's index to prevent multiple reads from the same storage slot
        uint256 valueIndex = set._indexes[value];

        if (valueIndex != 0) {
            // Equivalent to contains(set, value)
            // To delete an element from the _values array in O(1), we swap the element to delete with the last one in
            // the array, and then remove the last element (sometimes called as 'swap and pop').
            // This modifies the order of the array, as noted in {at}.

            uint256 toDeleteIndex = valueIndex - 1;
            uint256 lastIndex = set._values.length - 1;

            if (lastIndex != toDeleteIndex) {
                bytes32 lastValue = set._values[lastIndex];

                // Move the last value to the index where the value to delete is
                set._values[toDeleteIndex] = lastValue;
                // Update the index for the moved value
                set._indexes[lastValue] = valueIndex; // Replace lastValue's index to valueIndex
            }

            // Delete the slot where the moved value was stored
            set._values.pop();

            // Delete the index for the deleted slot
            delete set._indexes[value];

            return true;
        } else {
            return false;
        }
    }

    /**
     * @dev Returns true if the value is in the set. O(1).
     */
    function _contains(Set storage set, bytes32 value) private view returns (bool) {
        return set._indexes[value] != 0;
    }

    /**
     * @dev Returns the number of values on the set. O(1).
     */
    function _length(Set storage set) private view returns (uint256) {
        return set._values.length;
    }

    /**
     * @dev Returns the value stored at position `index` in the set. O(1).
     *
     * Note that there are no guarantees on the ordering of values inside the
     * array, and it may change when more values are added or removed.
     *
     * Requirements:
     *
     * - `index` must be strictly less than {length}.
     */
    function _at(Set storage set, uint256 index) private view returns (bytes32) {
        return set._values[index];
    }

    /**
     * @dev Return the entire set in an array
     *
     * WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed
     * to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that
     * this function has an unbounded cost, and using it as part of a state-changing function may render the function
     * uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block.
     */
    function _values(Set storage set) private view returns (bytes32[] memory) {
        return set._values;
    }

    // Bytes32Set

    struct Bytes32Set {
        Set _inner;
    }

    /**
     * @dev Add a value to a set. O(1).
     *
     * Returns true if the value was added to the set, that is if it was not
     * already present.
     */
    function add(Bytes32Set storage set, bytes32 value) internal returns (bool) {
        return _add(set._inner, value);
    }

    /**
     * @dev Removes a value from a set. O(1).
     *
     * Returns true if the value was removed from the set, that is if it was
     * present.
     */
    function remove(Bytes32Set storage set, bytes32 value) internal returns (bool) {
        return _remove(set._inner, value);
    }

    /**
     * @dev Returns true if the value is in the set. O(1).
     */
    function contains(Bytes32Set storage set, bytes32 value) internal view returns (bool) {
        return _contains(set._inner, value);
    }

    /**
     * @dev Returns the number of values in the set. O(1).
     */
    function length(Bytes32Set storage set) internal view returns (uint256) {
        return _length(set._inner);
    }

    /**
     * @dev Returns the value stored at position `index` in the set. O(1).
     *
     * Note that there are no guarantees on the ordering of values inside the
     * array, and it may change when more values are added or removed.
     *
     * Requirements:
     *
     * - `index` must be strictly less than {length}.
     */
    function at(Bytes32Set storage set, uint256 index) internal view returns (bytes32) {
        return _at(set._inner, index);
    }

    /**
     * @dev Return the entire set in an array
     *
     * WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed
     * to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that
     * this function has an unbounded cost, and using it as part of a state-changing function may render the function
     * uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block.
     */
    function values(Bytes32Set storage set) internal view returns (bytes32[] memory) {
        bytes32[] memory store = _values(set._inner);
        bytes32[] memory result;

        /// @solidity memory-safe-assembly
        assembly {
            result := store
        }

        return result;
    }

    // AddressSet

    struct AddressSet {
        Set _inner;
    }

    /**
     * @dev Add a value to a set. O(1).
     *
     * Returns true if the value was added to the set, that is if it was not
     * already present.
     */
    function add(AddressSet storage set, address value) internal returns (bool) {
        return _add(set._inner, bytes32(uint256(uint160(value))));
    }

    /**
     * @dev Removes a value from a set. O(1).
     *
     * Returns true if the value was removed from the set, that is if it was
     * present.
     */
    function remove(AddressSet storage set, address value) internal returns (bool) {
        return _remove(set._inner, bytes32(uint256(uint160(value))));
    }

    /**
     * @dev Returns true if the value is in the set. O(1).
     */
    function contains(AddressSet storage set, address value) internal view returns (bool) {
        return _contains(set._inner, bytes32(uint256(uint160(value))));
    }

    /**
     * @dev Returns the number of values in the set. O(1).
     */
    function length(AddressSet storage set) internal view returns (uint256) {
        return _length(set._inner);
    }

    /**
     * @dev Returns the value stored at position `index` in the set. O(1).
     *
     * Note that there are no guarantees on the ordering of values inside the
     * array, and it may change when more values are added or removed.
     *
     * Requirements:
     *
     * - `index` must be strictly less than {length}.
     */
    function at(AddressSet storage set, uint256 index) internal view returns (address) {
        return address(uint160(uint256(_at(set._inner, index))));
    }

    /**
     * @dev Return the entire set in an array
     *
     * WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed
     * to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that
     * this function has an unbounded cost, and using it as part of a state-changing function may render the function
     * uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block.
     */
    function values(AddressSet storage set) internal view returns (address[] memory) {
        bytes32[] memory store = _values(set._inner);
        address[] memory result;

        /// @solidity memory-safe-assembly
        assembly {
            result := store
        }

        return result;
    }

    // UintSet

    struct UintSet {
        Set _inner;
    }

    /**
     * @dev Add a value to a set. O(1).
     *
     * Returns true if the value was added to the set, that is if it was not
     * already present.
     */
    function add(UintSet storage set, uint256 value) internal returns (bool) {
        return _add(set._inner, bytes32(value));
    }

    /**
     * @dev Removes a value from a set. O(1).
     *
     * Returns true if the value was removed from the set, that is if it was
     * present.
     */
    function remove(UintSet storage set, uint256 value) internal returns (bool) {
        return _remove(set._inner, bytes32(value));
    }

    /**
     * @dev Returns true if the value is in the set. O(1).
     */
    function contains(UintSet storage set, uint256 value) internal view returns (bool) {
        return _contains(set._inner, bytes32(value));
    }

    /**
     * @dev Returns the number of values in the set. O(1).
     */
    function length(UintSet storage set) internal view returns (uint256) {
        return _length(set._inner);
    }

    /**
     * @dev Returns the value stored at position `index` in the set. O(1).
     *
     * Note that there are no guarantees on the ordering of values inside the
     * array, and it may change when more values are added or removed.
     *
     * Requirements:
     *
     * - `index` must be strictly less than {length}.
     */
    function at(UintSet storage set, uint256 index) internal view returns (uint256) {
        return uint256(_at(set._inner, index));
    }

    /**
     * @dev Return the entire set in an array
     *
     * WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed
     * to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that
     * this function has an unbounded cost, and using it as part of a state-changing function may render the function
     * uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block.
     */
    function values(UintSet storage set) internal view returns (uint256[] memory) {
        bytes32[] memory store = _values(set._inner);
        uint256[] memory result;

        /// @solidity memory-safe-assembly
        assembly {
            result := store
        }

        return result;
    }
}

// File @uniswap/v2-core/contracts/interfaces/[email protected]

pragma solidity >=0.5.0;

interface IUniswapV2Factory {
    event PairCreated(address indexed token0, address indexed token1, address pair, uint);

    function feeTo() external view returns (address);
    function feeToSetter() external view returns (address);

    function getPair(address tokenA, address tokenB) external view returns (address pair);
    function allPairs(uint) external view returns (address pair);
    function allPairsLength() external view returns (uint);

    function createPair(address tokenA, address tokenB) external returns (address pair);

    function setFeeTo(address) external;
    function setFeeToSetter(address) external;
}

// File contracts/ERC20Factory/ERC20/IERC20ConfigByMetadrop.sol

// Metadrop Contracts (v2.1.0)

/**
 *
 * @title IERC20ByMetadrop.sol. Interface for metadrop ERC20 standard
 *
 * @author metadrop
 *
 */

pragma solidity 0.8.21;

interface IERC20ConfigByMetadrop {
  enum VaultType {
    unicrypt,
    metavault
  }

  struct ERC20Config {
    bytes baseParameters;
    bytes supplyParameters;
    bytes taxParameters;
    bytes poolParameters;
  }

  struct ERC20BaseParameters {
    string name;
    string symbol;
    bool addLiquidityOnCreate;
    bool usesDRIPool;
  }

  struct ERC20SupplyParameters {
    uint256 maxSupply;
    uint256 lpSupply;
    uint256 projectSupply;
    uint256 maxTokensPerWallet;
    uint256 maxTokensPerTxn;
    uint256 lpLockupInDays;
    uint256 botProtectionDurationInSeconds;
    address projectSupplyRecipient;
    address projectLPOwner;
    bool burnLPTokens;
  }

  struct ERC20TaxParameters {
    uint256 projectBuyTaxBasisPoints;
    uint256 projectSellTaxBasisPoints;
    uint256 taxSwapThresholdBasisPoints;
    uint256 metadropBuyTaxBasisPoints;
    uint256 metadropSellTaxBasisPoints;
    uint256 metadropTaxPeriodInDays;
    address projectTaxRecipient;
    address metadropTaxRecipient;
    uint256 metadropMinBuyTaxBasisPoints; // new in v5
    uint256 metadropMinSellTaxBasisPoints; // new in v5
    uint256 metadropBuyTaxProportionBasisPoints; // new in v5
    uint256 metadropSellTaxProportionBasisPoints; // new in v5
    uint256 autoBurnDurationInBlocks; // new in v5
    uint256 autoBurnBasisPoints; // new in v5
  }

  struct ERC20PoolParameters {
    uint256 poolSupply;
    uint256 poolStartDate;
    uint256 poolEndDate;
    uint256 poolVestingInDays;
    uint256 poolMaxETH;
    uint256 poolPerAddressMaxETH;
    uint256 poolMinETH;
    uint256 poolPerTransactionMinETH;
  }
}

// File contracts/Global/IConfigStructures.sol

// Metadrop Contracts (v2.1.0)

/**
 *
 * @title IConfigStructures.sol. Interface for common config structures used accross the platform
 *
 * @author metadrop
 *
 */

pragma solidity 0.8.21;

interface IConfigStructures {
  enum DropStatus {
    approved,
    deployed,
    cancelled
  }

  enum TemplateStatus {
    live,
    terminated
  }

  // The current status of the mint:
  //   - notEnabled: This type of mint is not part of this drop
  //   - notYetOpen: This type of mint is part of the drop, but it hasn't started yet
  //   - open: it's ready for ya, get in there.
  //   - finished: been and gone.
  //   - unknown: theoretically impossible.
  enum MintStatus {
    notEnabled,
    notYetOpen,
    open,
    finished,
    unknown
  }

  struct SubListConfig {
    uint256 start;
    uint256 end;
    uint256 phaseMaxSupply;
  }

  struct PrimarySaleModuleInstance {
    address instanceAddress;
    string instanceDescription;
  }

  struct NFTModuleConfig {
    uint256 templateId;
    bytes configData;
    bytes vestingData;
  }

  struct PrimarySaleModuleConfig {
    uint256 templateId;
    bytes configData;
  }

  struct ProjectBeneficiary {
    address payable payeeAddress;
    uint256 payeeShares;
  }

  struct VestingConfig {
    uint256 start;
    uint256 projectUpFrontShare;
    uint256 projectVestedShare;
    uint256 vestingPeriodInDays;
    uint256 vestingCliff;
    ProjectBeneficiary[] projectPayees;
  }

  struct RoyaltySplitterModuleConfig {
    uint256 templateId;
    bytes configData;
  }

  struct InLifeModuleConfig {
    uint256 templateId;
    bytes configData;
  }

  struct InLifeModules {
    InLifeModuleConfig[] modules;
  }

  struct NFTConfig {
    uint256 supply;
    string name;
    string symbol;
    bytes32 positionProof;
    bool includePriorPhasesInMintTracking;
    bool singleMetadataCollection;
    uint256 reservedAllocation;
    uint256 assistanceRequestWindowInSeconds;
  }

  struct Template {
    TemplateStatus status;
    uint16 templateNumber;
    uint32 loadedDate;
    address payable templateAddress;
    string templateDescription;
  }

  struct RoyaltyDetails {
    address newRoyaltyPaymentSplitterInstance;
    uint96 royaltyFromSalesInBasisPoints;
  }

  struct SignedDropMessageDetails {
    uint256 messageTimeStamp;
    bytes32 messageHash;
    bytes messageSignature;
  }
}

// File contracts/ERC20Factory/ERC20/IERC20ByMetadrop.sol

// Metadrop Contracts (v2.1.0)

pragma solidity 0.8.21;

/**
 * @dev Metadrop core ERC-20 contract, interface
 */
interface IERC20ByMetadrop is
  IConfigStructures,
  IERC20,
  IERC20ConfigByMetadrop,
  IERC20Metadata
{
  event AutoSwapThresholdUpdated(uint256 oldThreshold, uint256 newThreshold);

  event ExternalCallError(uint256 identifier);

  event InitialLiquidityAdded(uint256 tokenA, uint256 tokenB, uint256 lpToken);

  event LimitsUpdated(
    uint256 oldMaxTokensPerTransaction,
    uint256 newMaxTokensPerTransaction,
    uint256 oldMaxTokensPerWallet,
    uint256 newMaxTokensPerWallet
  );

  event LiquidityLocked(uint256 lpTokens, uint256 lpLockupInDays);

  event LiquidityBurned(uint256 lpTokens);

  event LiquidityPoolCreated(address addedPool);

  event LiquidityPoolAdded(address addedPool);

  event LiquidityPoolRemoved(address removedPool);

  event MetadropTaxBasisPointsChanged(
    uint256 oldBuyBasisPoints,
    uint256 newBuyBasisPoints,
    uint256 oldSellBasisPoints,
    uint256 newSellBasisPoints
  );

  event ProjectTaxBasisPointsChanged(
    uint256 oldBuyBasisPoints,
    uint256 newBuyBasisPoints,
    uint256 oldSellBasisPoints,
    uint256 newSellBasisPoints
  );

  event RevenueAutoSwap();

  event ProjectTaxRecipientUpdated(address treasury);

  event UnlimitedAddressAdded(address addedUnlimted);

  event UnlimitedAddressRemoved(address removedUnlimted);

  event ValidCallerAdded(bytes32 addedValidCaller);

  event ValidCallerRemoved(bytes32 removedValidCaller);

  /**
   * @dev function {addInitialLiquidity}
   *
   * Add initial liquidity to the uniswap pair
   *
   * @param vaultFee_ The vault fee in wei. This must match the required fee from the external vault contract.
   * @param lpLockupInDaysOverride_ The number of days to lock liquidity NOTE you can pass 0 to use the stored value.
   * This value is an override, and will override a stored value which is LOWER that it. If the value you are passing is
   * LOWER than the stored value the stored value will not be reduced.
   *
   * Example usage 1: When creating the coin the lpLockupInDays is set to 0. This means that on this call the
   * user can set the lockup to any value they like, as all integer values greater than zero will be used to override
   * that set in storage.
   *
   * Example usage 2: When using a DRI Pool the lockup period is set on this contract and the pool need not know anything
   * about this setting. The pool can pass back a 0 on this call and know that the existing value stored on this contract
   * will be used.
   * @param burnLPTokensOverride_ If the LP tokens should be burned (otherwise they are locked). This is an override field
   * that can ONLY be used to override a held value of FALSE with a new value of TRUE.
   *
   * Example usage 1: When creating the coin the user didn't add liquidity, or specify that the LP tokens were to be burned.
   * So burnLPTokens is held as FALSE. When they add liquidity they want to lock tokens, so they pass this in as FALSE again,
   * and it remains FALSE.
   *
   * Example usage 2: As above, but when later adding liquidity the user wants to burn the LP. So the stored value is FALSE
   * and the user passes TRUE into this method. The TRUE overrides the held value of FALSE and the tokens are burned.
   *
   * Example uusage 3: The user is using a DRI pool and they have specified on the coin creation that the LP tokens are to
   * be burned. This contract therefore holds TRUE for burnLPTokens. The DRI pool does not need to know what the user has
   * selected. It can safely pass back FALSE to this method call and the stored value of TRUE will remain, resulting in the
   * LP tokens being burned.
   */
  function addInitialLiquidity(
    uint256 vaultFee_,
    uint256 lpLockupInDaysOverride_,
    bool burnLPTokensOverride_
  ) external payable;

  /**
   * @dev function {isLiquidityPool}
   *
   * Return if an address is a liquidity pool
   *
   * @param queryAddress_ The address being queried
   * @return bool The address is / isn't a liquidity pool
   */
  function isLiquidityPool(address queryAddress_) external view returns (bool);

  /**
   * @dev function {liquidityPools}
   *
   * Returns a list of all liquidity pools
   *
   * @return liquidityPools_ a list of all liquidity pools
   */
  function liquidityPools()
    external
    view
    returns (address[] memory liquidityPools_);

  /**
   * @dev function {addLiquidityPool} onlyOwner
   *
   * Allows the manager to add a liquidity pool to the pool enumerable set
   *
   * @param newLiquidityPool_ The address of the new liquidity pool
   */
  function addLiquidityPool(address newLiquidityPool_) external;

  /**
   * @dev function {removeLiquidityPool} onlyOwner
   *
   * Allows the manager to remove a liquidity pool
   *
   * @param removedLiquidityPool_ The address of the old removed liquidity pool
   */
  function removeLiquidityPool(address removedLiquidityPool_) external;

  /**
   * @dev function {isUnlimited}
   *
   * Return if an address is unlimited (is not subject to per txn and per wallet limits)
   *
   * @param queryAddress_ The address being queried
   * @return bool The address is / isn't unlimited
   */
  function isUnlimited(address queryAddress_) external view returns (bool);

  /**
   * @dev function {unlimitedAddresses}
   *
   * Returns a list of all unlimited addresses
   *
   * @return unlimitedAddresses_ a list of all unlimited addresses
   */
  function unlimitedAddresses()
    external
    view
    returns (address[] memory unlimitedAddresses_);

  /**
   * @dev function {addUnlimited} onlyOwner
   *
   * Allows the manager to add an unlimited address
   *
   * @param newUnlimited_ The address of the new unlimited address
   */
  function addUnlimited(address newUnlimited_) external;

  /**
   * @dev function {removeUnlimited} onlyOwner
   *
   * Allows the manager to remove an unlimited address
   *
   * @param removedUnlimited_ The address of the old removed unlimited address
   */
  function removeUnlimited(address removedUnlimited_) external;

  /**
   * @dev function {isValidCaller}
   *
   * Return if an address is a valid caller
   *
   * @param queryHash_ The code hash being queried
   * @return bool The address is / isn't a valid caller
   */
  function isValidCaller(bytes32 queryHash_) external view returns (bool);

  /**
   * @dev function {validCallers}
   *
   * Returns a list of all valid caller code hashes
   *
   * @return validCallerHashes_ a list of all valid caller code hashes
   */
  function validCallers()
    external
    view
    returns (bytes32[] memory validCallerHashes_);

  /**
   * @dev function {addValidCaller} onlyOwner
   *
   * Allows the owner to add the hash of a valid caller
   *
   * @param newValidCallerHash_ The hash of the new valid caller
   */
  function addValidCaller(bytes32 newValidCallerHash_) external;

  /**
   * @dev function {removeValidCaller} onlyOwner
   *
   * Allows the owner to remove a valid caller
   *
   * @param removedValidCallerHash_ The hash of the old removed valid caller
   */
  function removeValidCaller(bytes32 removedValidCallerHash_) external;

  /**
   * @dev function {setProjectTaxRecipient} onlyOwner
   *
   * Allows the manager to set the project tax recipient address
   *
   * @param projectTaxRecipient_ New recipient address
   */
  function setProjectTaxRecipient(address projectTaxRecipient_) external;

  /**
   * @dev function {setSwapThresholdBasisPoints} onlyOwner
   *
   * Allows the manager to set the autoswap threshold
   *
   * @param swapThresholdBasisPoints_ New swap threshold in basis points
   */
  function setSwapThresholdBasisPoints(
    uint16 swapThresholdBasisPoints_
  ) external;

  /**
   * @dev function {setProjectTaxRates} onlyOwner
   *
   * Change the tax rates, subject to only ever decreasing
   *
   * @param newProjectBuyTaxBasisPoints_ The new buy tax rate
   * @param newProjectSellTaxBasisPoints_ The new sell tax rate
   */
  function setProjectTaxRates(
    uint16 newProjectBuyTaxBasisPoints_,
    uint16 newProjectSellTaxBasisPoints_
  ) external;

  /**
   * @dev function {setLimits} onlyOwner
   *
   * Change the limits on transactions and holdings
   *
   * @param newMaxTokensPerTransaction_ The new per txn limit
   * @param newMaxTokensPerWallet_ The new tokens per wallet limit
   */
  function setLimits(
    uint256 newMaxTokensPerTransaction_,
    uint256 newMaxTokensPerWallet_
  ) external;

  /**
   * @dev function {limitsEnforced}
   *
   * Return if limits are enforced on this contract
   *
   * @return bool : they are / aren't
   */
  function limitsEnforced() external view returns (bool);

  /**
   * @dev getMetadropBuyTaxBasisPoints
   *
   * Return the metadrop buy tax basis points given the timed expiry
   */
  function getMetadropBuyTaxBasisPoints() external view returns (uint256);

  /**
   * @dev getMetadropSellTaxBasisPoints
   *
   * Return the metadrop sell tax basis points given the timed expiry
   */
  function getMetadropSellTaxBasisPoints() external view returns (uint256);

  /**
   * @dev totalBuyTaxBasisPoints
   *
   * Provide easy to view tax total:
   */
  function totalBuyTaxBasisPoints() external view returns (uint256);

  /**
   * @dev totalSellTaxBasisPoints
   *
   * Provide easy to view tax total:
   */
  function totalSellTaxBasisPoints() external view returns (uint256);

  /**
   * @dev distributeTaxTokens
   *
   * Allows the distribution of tax tokens to the designated recipient(s)
   *
   * As part of standard processing the tax token balance being above the threshold
   * will trigger an autoswap to ETH and distribution of this ETH to the designated
   * recipients. This is automatic and there is no need for user involvement.
   *
   * As part of this swap there are a number of calculations performed, particularly
   * if the tax balance is above MAX_SWAP_THRESHOLD_MULTIPLE.
   *
   * Testing indicates that these calculations are safe. But given the data / code
   * interactions it remains possible that some edge case set of scenarios may cause
   * an issue with these calculations.
   *
   * This method is therefore provided as a 'fallback' option to safely distribute
   * accumulated taxes from the contract, with a direct transfer of the ERC20 tokens
   * themselves.
   */
  function distributeTaxTokens() external;

  /**
   * @dev function {rescueETH} onlyOwner
   *
   * A withdraw function to allow ETH to be rescued.
   *
   * This contract should never hold ETH. The only envisaged scenario where
   * it might hold ETH is a failed autoswap where the uniswap swap has completed,
   * the recipient of ETH reverts, the contract then wraps to WETH and the
   * wrap to WETH fails.
   *
   * This feels unlikely. But, for safety, we include this method.
   *
   * @param amount_ The amount to withdraw
   */
  function rescueETH(uint256 amount_) external;

  /**
   * @dev function {rescueERC20}
   *
   * A withdraw function to allow ERC20s (except address(this)) to be rescued.
   *
   * This contract should never hold ERC20s other than tax tokens. The only envisaged
   * scenario where it might hold an ERC20 is a failed autoswap where the uniswap swap
   * has completed, the recipient of ETH reverts, the contract then wraps to WETH, the
   * wrap to WETH succeeds, BUT then the transfer of WETH fails.
   *
   * This feels even less likely than the scenario where ETH is held on the contract.
   * But, for safety, we include this method.
   *
   * @param token_ The ERC20 contract
   * @param amount_ The amount to withdraw
   */
  function rescueERC20(address token_, uint256 amount_) external;

  /**
   * @dev function {rescueExcessToken}
   *
   * A withdraw function to allow ERC20s from this address that are above
   * the accrued tax balance to be rescued.
   */
  function rescueExcessToken(uint256 amount_) external;

  /**
   * @dev Destroys a `value` amount of tokens from the caller.
   *
   * See {ERC20-_burn}.
   */
  function burn(uint256 value) external;

  /**
   * @dev Destroys a `value` amount of tokens from `account`, deducting from
   * the caller's allowance.
   *
   * See {ERC20-_burn} and {ERC20-allowance}.
   *
   * Requirements:
   *
   * - the caller must have allowance for ``accounts``'s tokens of at least
   * `value`.
   */
  function burnFrom(address account, uint256 value) external;
}

// File contracts/Global/IErrors.sol

// Metadrop Contracts (v2.1.0)

/**
 *
 * @title IErrors.sol. Interface for error definitions used across the platform
 *
 * @author metadrop
 *
 */

pragma solidity 0.8.21;

interface IErrors {
  enum BondingCurveErrorType {
    OK, //                                                  No error
    INVALID_NUMITEMS, //                                    The numItem value is 0
    SPOT_PRICE_OVERFLOW //                                  The updated spot price doesn't fit into 128 bits
  }

  error AdapterParamsMustBeEmpty(); //                      The adapter parameters on this LZ call must be empty.

  error AdditionToPoolIsBelowPerTransactionMinimum(); //    The contribution amount is less than the minimum.

  error AdditionToPoolWouldExceedPoolCap(); //              This addition to the pool would exceed the pool cap.

  error AdditionToPoolWouldExceedPerAddressCap(); //        This addition to the pool would exceed the per address cap.

  error AddressAlreadySet(); //                             The address being set can only be set once, and is already non-0.

  error AllowanceDecreasedBelowZero(); //                   You cannot decrease the allowance below zero.

  error AlreadyInitialised(); //                            The contract is already initialised: it cannot be initialised twice!

  error AmountExceedsAvailable(); //                        You are requesting more token than is available.

  error ApprovalCallerNotOwnerNorApproved(); //             The caller must own the token or be an approved operator.

  error ApproveFromTheZeroAddress(); //                     Approval cannot be called from the zero address (indeed, how have you??).

  error ApproveToTheZeroAddress(); //                       Approval cannot be given to the zero address.

  error ApprovalQueryForNonexistentToken(); //              The token does not exist.

  error AuctionStatusIsNotEnded(); //                       Throw if the action required the auction to be closed, and it isn't.

  error AuctionStatusIsNotOpen(); //                        Throw if the action requires the auction to be open, and it isn't.

  error AuxCallFailed(
    address[] modules,
    uint256 value,
    bytes data,
    uint256 txGas
  ); //                                                     An auxilliary call from the drop factory failed.

  error BalanceMismatch(); //                               An error when comparing balance amounts.

  error BalanceQueryForZeroAddress(); //                    Cannot query the balance for the zero address.

  error BidMustBeBelowTheFloorWhenReducingQuantity(); //    Only bids that are below the floor can reduce the quantity of the bid.

  error BidMustBeBelowTheFloorForRefundDuringAuction(); //  Only bids that are below the floor can be refunded during the auction.

  error BondingCurveError(BondingCurveErrorType error); //  An error of the type specified has occured in bonding curve processing.

  error botProtectionDurationInSecondsMustFitUint128(); //  botProtectionDurationInSeconds cannot be too large.

  error BurnExceedsBalance(); //                            The amount you have selected to burn exceeds the addresses balance.

  error BurnFromTheZeroAddress(); //                        Tokens cannot be burned from the zero address. (Also, how have you called this!?!)

  error CallerIsNotDepositBoxOwner(); //                    The caller is not the owner of the deposit box.

  error CallerIsNotFactory(); //                            The caller of this function must match the factory address in storage.

  error CallerIsNotFactoryOrProjectOwner(); //              The caller of this function must match the factory address OR project owner address.

  error CallerIsNotFactoryProjectOwnerOrPool(); //          The caller of this function must match the factory address, project owner or pool address.

  error CallerIsNotTheOwner(); //                           The caller is not the owner of this contract.

  error CallerIsNotTheManager(); //                         The caller is not the manager of this contract.

  error CallerMustBeLzApp(); //                             The caller must be an LZ application.

  error CallerIsNotPlatformAdmin(address caller); //        The caller of this function must be part of the platformAdmin group.

  error CallerIsNotSuperAdmin(address caller); //           The caller of this function must match the superAdmin address in storage.

  error CannotAddLiquidityOnCreateAndUseDRIPool(); //       Cannot use both liquidity added on create and a DRIPool in the same token.

  error CannotPerformDuringAutoswap(); //                   Cannot call this function during an autoswap.

  error CannotSetNewOwnerToTheZeroAddress(); //             You can't set the owner of this contract to the zero address (address(0)).

  error CannotSetToZeroAddress(); //                        The corresponding address cannot be set to the zero address (address(0)).

  error CannotSetNewManagerToTheZeroAddress(); //           Cannot transfer the manager to the zero address (address(0)).

  error CannotWithdrawThisToken(); //                       Cannot withdraw the specified token.

  error CanOnlyReduce(); //                                 The given operation can only reduce the value specified.

  error CollectionAlreadyRevealed(); //                     The collection is already revealed; you cannot call reveal again.

  error ContractIsDecommissioned(); //                      This contract is decommissioned!

  error ContractIsPaused(); //                              The call requires the contract to be unpaused, and it is paused.

  error ContractIsNotPaused(); //                           The call required the contract to be paused, and it is NOT paused.

  error DecreasedAllowanceBelowZero(); //                   The request would decrease the allowance below zero, and that is not allowed.

  error DestinationIsNotTrustedSource(); //                 The destination that is being called through LZ has not been set as trusted.

  error DeductionsOnBuyExceedOrEqualOneHundredPercent(); // The total of all buy deductions cannot equal or exceed 100%.

  error DeployerOnly(); //                                  This method can only be called by the deployer address.

  error DeploymentError(); //                               Error on deployment.

  error DepositBoxIsNotOpen(); //                           This action cannot complete as the deposit box is not open.

  error DriPoolAddressCannotBeAddressZero(); //             The Dri Pool address cannot be the zero address.

  error GasLimitIsTooLow(); //                              The gas limit for the LayerZero call is too low.

  error IncorrectConfirmationValue(); //                    You need to enter the right confirmation value to call this funtion (usually 69420).

  error IncorrectPayment(); //                              The function call did not include passing the correct payment.

  error InitialLiquidityAlreadyAdded(); //                  Initial liquidity has already been added. You can't do it again.

  error InitialLiquidityNotYetAdded(); //                   Initial liquidity needs to have been added for this to succedd.

  error InsufficientAllowance(); //                         There is not a high enough allowance for this operation.

  error InvalidAdapterParams(); //                          The current adapter params for LayerZero on this contract won't work :(.

  error InvalidAddress(); //                                An address being processed in the function is not valid.

  error InvalidEndpointCaller(); //                         The calling address is not a valid LZ endpoint. The LZ endpoint was set at contract creation
  //                                                        and cannot be altered after. Check the address LZ endpoint address on the contract.

  error InvalidHash(); //                                   The passed hash does not meet requirements.

  error InvalidMinGas(); //                                 The minimum gas setting for LZ in invalid.

  error InvalidOracleSignature(); //                        The signature provided with the contract call is not valid, either in format or signer.

  error InvalidPayload(); //                                The LZ payload is invalid

  error InvalidReceiver(); //                               The address used as a target for funds is not valid.

  error InvalidSourceSendingContract(); //                  The LZ message is being related from a source contract on another chain that is NOT trusted.

  error InvalidTotalShares(); //                            Total shares must equal 100 percent in basis points.

  error LimitsCanOnlyBeRaised(); //                         Limits are UP ONLY.

  error LimitTooHigh(); //                                  The limit has been set too high.

  error ListLengthMismatch(); //                            Two or more lists were compared and they did not match length.

  error LiquidityPoolMustBeAContractAddress(); //           Cannot add a non-contract as a liquidity pool.

  error LiquidityPoolCannotBeAddressZero(); //              Cannot add a liquidity pool from the zero address.

  error LPLockUpMustFitUint88(); //                         LP lockup is held in a uint88, so must fit.

  error NoTrustedPathRecord(); //                           LZ needs a trusted path record for this to work. What's that, you ask?

  error MachineAddressCannotBeAddressZero(); //             Cannot set the machine address to the zero address.

  error ManagerUnauthorizedAccount(); //                    The caller is not the pending manager.

  error MaxBidQuantityIs255(); //                           Validation: as we use a uint8 array to track bid positions the max bid quantity is 255.

  error MaxPublicMintAllowanceExceeded(
    uint256 requested,
    uint256 alreadyMinted,
    uint256 maxAllowance
  ); //                                                     The calling address has requested a quantity that would exceed the max allowance.

  error MaxSupplyTooHigh(); //                              Max supply must fit in a uint128.

  error MaxTokensPerWalletExceeded(); //                    The transfer would exceed the max tokens per wallet limit.

  error MaxTokensPerTxnExceeded(); //                       The transfer would exceed the max tokens per transaction limit.

  error MetadataIsLocked(); //                              The metadata on this contract is locked; it cannot be altered!

  error MetadropFactoryOnlyOncePerReveal(); //              This function can only be called (a) by the factory and, (b) just one time!

  error MetadropModulesOnly(); //                           Can only be called from a metadrop contract.

  error MetadropOracleCannotBeAddressZero(); //             The metadrop Oracle cannot be the zero address (address(0)).

  error MinGasLimitNotSet(); //                             The minimum gas limit for LayerZero has not been set.

  error MintERC2309QuantityExceedsLimit(); //               The `quantity` minted with ERC2309 exceeds the safety limit.

  error MintingIsClosedForever(); //                        Minting is, as the error suggests, so over (and locked forever).

  error MintToZeroAddress(); //                             Cannot mint to the zero address.

  error MintZeroQuantity(); //                              The quantity of tokens minted must be more than zero.

  error NewBuyTaxBasisPointsExceedsMaximum(); //            Project owner trying to set the tax rate too high.

  error NewSellTaxBasisPointsExceedsMaximum(); //           Project owner trying to set the tax rate too high.

  error NoETHForLiquidityPair(); //                         No ETH has been provided for the liquidity pair.

  error TaxPeriodStillInForce(); //                         The minimum tax period has not yet expired.

  error NoPaymentDue(); //                                  No payment is due for this address.

  error NoRefundForCaller(); //                             Error thrown when the calling address has no refund owed.

  error NoStoredMessage(); //                               There is no stored message matching the passed parameters.

  error NothingToClaim(); //                                The calling address has nothing to claim.

  error NoTokenForLiquidityPair(); //                       There is no token to add to the LP.

  error OperationDidNotSucceed(); //                        The operation failed (vague much?).

  error OracleSignatureHasExpired(); //                     A signature has been provided but it is too old.

  error OwnableUnauthorizedAccount(); //                    The caller is not the pending owner.

  error OwnershipNotInitializedForExtraData(); //           The `extraData` cannot be set on an uninitialized ownership slot.

  error OwnerQueryForNonexistentToken(); //                 The token does not exist.

  error ParametersDoNotMatchSignedMessage(); //             The parameters passed with the signed message do not match the message itself.

  error ParamTooLargeStartDate(); //                        The passed parameter exceeds the var type max.

  error ParamTooLargeEndDate(); //                          The passed parameter exceeds the var type max.

  error ParamTooLargeMinETH(); //                           The passed parameter exceeds the var type max.

  error ParamTooLargePerAddressMax(); //                    The passed parameter exceeds the var type max.

  error ParamTooLargeVestingDays(); //                      The passed parameter exceeds the var type max.

  error ParamTooLargePoolSupply(); //                       The passed parameter exceeds the var type max.

  error ParamTooLargePoolPerTxnMinETH(); //                 The passed parameter exceeds the var type max.

  error PassedConfigDoesNotMatchApproved(); //              The config provided on the call does not match the approved config.

  error PauseCutOffHasPassed(); //                          The time period in which we can pause has passed; this contract can no longer be paused.

  error PaymentMustCoverPerMintFee(); //                    The payment passed must at least cover the per mint fee for the quantity requested.

  error PermitDidNotSucceed(); //                           The safeERC20 permit failed.

  error PlatformAdminCannotBeAddressZero(); //              We cannot use the zero address (address(0)) as a platformAdmin.

  error PlatformTreasuryCannotBeAddressZero(); //           The treasury address cannot be set to the zero address.

  error PoolIsAboveMinimum(); //                            You required the pool to be below the minimum, and it is not

  error PoolIsBelowMinimum(); //                            You required the pool to be above the minimum, and it is not

  error PoolPhaseIsClosed(); //                             The block.timestamp is either before the pool is open or after it is closed.

  error PoolPhaseIsNotAfter(); //                           The block.timestamp is either before or during the pool open phase.

  error PoolVestingNotYetComplete(); //                     Tokens in the pool are not yet vested.

  error ProjectOwnerCannotBeAddressZero(); //               The project owner has to be a non zero address.

  error ProofInvalid(); //                                  The provided proof is not valid with the provided arguments.

  error QuantityExceedsRemainingCollectionSupply(); //      The requested quantity would breach the collection supply.

  error QuantityExceedsRemainingPhaseSupply(); //           The requested quantity would breach the phase supply.

  error QuantityExceedsMaxPossibleCollectionSupply(); //    The requested quantity would breach the maximum trackable supply

  error ReferralIdAlreadyUsed(); //                         This referral ID has already been used; they are one use only.

  error RequestingMoreThanAvailableBalance(); //             The request exceeds the available balance.

  error RequestingMoreThanRemainingAllocation(
    uint256 previouslyMinted,
    uint256 requested,
    uint256 remainingAllocation
  ); //                                                     Number of tokens requested for this mint exceeds the remaining allocation (taking the
  //                                                        original allocation from the list and deducting minted tokens).

  error RoyaltyFeeWillExceedSalePrice(); //                 The ERC2981 royalty specified will exceed the sale price.

  error ShareTotalCannotBeZero(); //                        The total of all the shares cannot be nothing.

  error SliceOutOfBounds(); //                              The bytes slice operation was out of bounds.

  error SliceOverflow(); //                                 The bytes slice operation overlowed.

  error SuperAdminCannotBeAddressZero(); //                 The superAdmin cannot be the sero address (address(0)).

  error SupplyTotalMismatch(); //                           The sum of the team supply and lp supply does not match.

  error SupportWindowIsNotOpen(); //                        The project owner has not requested support within the support request expiry window.

  error SwapThresholdTooLow(); // The select swap threshold is below the minimum.

  error TaxFreeAddressCannotBeAddressZero(); //             A tax free address cannot be address(0)

  error TemplateCannotBeAddressZero(); //                   The address for a template cannot be address zero (address(0)).

  error TemplateNotFound(); //                              There is no template that matches the passed template Id.

  error ThisMintIsClosed(); //                              It's over (well, this mint is, anyway).

  error TotalSharesMustMatchDenominator(); //               The total of all shares must equal the denominator value.

  error TransferAmountExceedsBalance(); //                  The transfer amount exceeds the accounts available balance.

  error TransferCallerNotOwnerNorApproved(); //             The caller must own the token or be an approved operator.

  error TransferFailed(); //                                The transfer has failed.

  error TransferFromIncorrectOwner(); //                    The token must be owned by `from`.

  error TransferToNonERC721ReceiverImplementer(); //        Cannot safely transfer to a contract that does not implement the ERC721Receiver interface.

  error TransferFromZeroAddress(); //                       Cannot transfer from the zero address. Indeed, this surely is impossible, and likely a waste to check??

  error TransferToZeroAddress(); //                         Cannot transfer to the zero address.

  error UnrecognisedVRFMode(); //                           Currently supported VRF modes are 0: chainlink and 1: arrng

  error URIQueryForNonexistentToken(); //                   The token does not exist.

  error ValueExceedsMaximum(); //                           The value sent exceeds the maximum allowed (super useful explanation huh?).

  error VRFCoordinatorCannotBeAddressZero(); //             The VRF coordinator cannot be the zero address (address(0)).
}

// File contracts/ERC20Factory/ERC20Factory/IERC20FactoryByMetadrop.sol

// Metadrop Contracts (v2.1.0)

pragma solidity 0.8.21;

/**
 * @dev Metadrop ERC-20 factory, interface
 */
interface IERC20FactoryByMetadrop is
  IConfigStructures,
  IErrors,
  IERC20ConfigByMetadrop
{
  event DriPoolAddressUpdated(address oldAddress, address newAddress);

  event ERC20Created(
    string metaId,
    address indexed deployer,
    address contractInstance,
    address driPoolInstance,
    string symbol,
    string name,
    bytes constructorArgs
  );

  event MachineAddressUpdated(address oldAddress, address newAddress);

  event OracleAddressUpdated(address oldAddress, address newAddress);

  event MessageValidityInSecondsUpdated(
    uint256 oldMessageValidityInSeconds,
    uint256 newMessageValidityInSeconds
  );

  event PlatformTreasuryUpdated(address oldAddress, address newAddress);

  /**
   * @dev function {initialiseMachineAddress}
   *
   * Initialise the machine template address. This needs to be separate from
   * the constructor as the machine needs the factory address on its constructor.
   *
   * This must ALWAYS be called as part of deployment.
   *
   * @param machineTemplate_ the machine address
   */
  function initialiseMachineAddress(address machineTemplate_) external;

  /**
   * @dev function {decommissionFactory} onlySuperAdmin
   *
   * Make this factory unusable for creating new ERC20s, forever
   *
   */
  function decommissionFactory() external;

  /**
   * @dev function {setMetadropOracleAddress} onlyPlatformAdmin
   *
   * Set the metadrop trusted oracle address
   *
   * @param metadropOracleAddress_ Trusted metadrop oracle address
   */
  function setMetadropOracleAddress(address metadropOracleAddress_) external;

  /**
   * @dev function {setMessageValidityInSeconds} onlyPlatformAdmin
   *
   * Set the validity period of signed messages
   *
   * @param messageValidityInSeconds_ Validity period in seconds for messages signed by the trusted oracle
   */
  function setMessageValidityInSeconds(
    uint256 messageValidityInSeconds_
  ) external;

  /**
   * @dev function {setPlatformTreasury} onlySuperAdmin
   *
   * Set the address that platform fees will be paid to / can be withdrawn to.
   * Note that this is restricted to the highest authority level, the super
   * admin. Platform admins can trigger a withdrawal to the treasury, but only
   * the default admin can set or alter the treasury address. It is recommended
   * that the default admin is highly secured and restrited e.g. a multi-sig.
   *
   * @param platformTreasury_ New treasury address
   */
  function setPlatformTreasury(address platformTreasury_) external;

  /**
   * @dev function {setMachineAddress} onlyPlatformAdmin
   *
   * Set a new machine template address
   *
   * @param newMachineAddress_ the new machine address
   */
  function setMachineAddress(address newMachineAddress_) external;

  /**
   * @dev function {setDriPoolAddress} onlyPlatformAdmin
   *
   * Set a new launch pool template address
   *
   * @param newDriPoolAddress_ the new launch pool address
   */
  function setDriPoolAddress(address newDriPoolAddress_) external;

  /**
   * @dev function {withdrawETH} onlyPlatformAdmin
   *
   * A withdraw function to allow ETH to be withdrawn to the treasury
   *
   * @param amount_ The amount to withdraw
   */
  function withdrawETH(uint256 amount_) external;

  /**
   * @dev function {withdrawERC20} onlyPlatformAdmin
   *
   * A withdraw function to allow ERC20s to be withdrawn to the treasury
   *
   * @param token_ The contract address of the token being withdrawn
   * @param amount_ The amount to withdraw
   */
  function withdrawERC20(IERC20 token_, uint256 amount_) external;

  /**
   * @dev function {createERC20}
   *
   * Create an ERC-20
   *
   * @param metaId_ The drop Id being approved
   * @param salt_ Salt for create2
   * @param erc20Config_ ERC20 configuration
   * @param signedMessage_ The signed message object
   * @param vaultFee_ The fee for the token vault
   * @param deploymentFee_ The fee for deployment, if any
   * @return deployedAddress_ The deployed ERC20 contract address
   */
  function createERC20(
    string calldata metaId_,
    bytes32 salt_,
    ERC20Config calldata erc20Config_,
    SignedDropMessageDetails calldata signedMessage_,
    uint256 vaultFee_,
    uint256 deploymentFee_
  ) external payable returns (address deployedAddress_);

  /**
   * @dev function {createConfigHash}
   *
   * Create the config hash
   *
   * @param metaId_ The drop Id being approved
   * @param salt_ Salt for create2
   * @param erc20Config_ ERC20 configuration
   * @param messageTimeStamp_ When the message for this config hash was signed
   * @param vaultFee_ The fee for the token vault
   * @param deploymentFee_ The fee for deployment, if any
   * @param deployer_ Address performing the deployment
   * @return configHash_ The bytes32 config hash
   */
  function createConfigHash(
    string calldata metaId_,
    bytes32 salt_,
    ERC20Config calldata erc20Config_,
    uint256 messageTimeStamp_,
    uint256 vaultFee_,
    uint256 deploymentFee_,
    address deployer_
  ) external pure returns (bytes32 configHash_);
}

// File contracts/Global/Revert.sol

// Metadrop Contracts (v2.1.0)

/**
 *
 * @title Revert.sol. For efficient reverts
 *
 * @author metadrop
 *
 */

pragma solidity 0.8.21;

abstract contract Revert {
  /**
   * @dev For more efficient reverts.
   */
  function _revert(bytes4 errorSelector) internal pure {
    assembly {
      mstore(0x00, errorSelector)
      revert(0x00, 0x04)
    }
  }
}

// File contracts/Global/OZ/Ownable.sol

// Metadrop Contracts (v2.1.0)
// Metadrop based on OpenZeppelin Contracts (last updated v4.9.0) (access/Ownable.sol)

pragma solidity 0.8.21;

/**
 * @dev Contract module which provides a basic access control mechanism, where
 * there is an account (an owner) that can be granted exclusive access to
 * specific functions.
 *
 * By default, the owner account will be the one that deploys the contract. This
 * can later be changed with {transferOwnership}.
 *
 * This module is used through inheritance. It will make available the modifier
 * `onlyOwner`, which can be applied to your functions to restrict their use to
 * the owner.
 */
abstract contract Ownable is IErrors, Revert, Context {
  address private _owner;

  event OwnershipTransferred(
    address indexed previousOwner,
    address indexed newOwner
  );

  /**
   * @dev Initializes the contract setting the deployer as the initial owner.
   */
  constructor() {
    _transferOwnership(_msgSender());
  }

  /**
   * @dev Throws if called by any account other than the owner.
   */
  modifier onlyOwner() {
    _checkOwner();
    _;
  }

  /**
   * @dev Returns the address of the current owner.
   */
  function owner() public view virtual returns (address) {
    return _owner;
  }

  /**
   * @dev Throws if the sender is not the owner.
   */
  function _checkOwner() internal view virtual {
    if (owner() != _msgSender()) {
      _revert(CallerIsNotTheOwner.selector);
    }
  }

  /**
   * @dev Leaves the contract without owner. It will not be possible to call
   * `onlyOwner` functions. Can only be called by the current owner.
   *
   * NOTE: Renouncing ownership will leave the contract without an owner,
   * thereby disabling any functionality that is only available to the owner.
   */
  function renounceOwnership() public virtual onlyOwner {
    _transferOwnership(address(0));
  }

  /**
   * @dev Transfers ownership of the contract to a new account (`newOwner`).
   * Can only be called by the current owner.
   */
  function transferOwnership(address newOwner) public virtual onlyOwner {
    if (newOwner == address(0)) {
      _revert(CannotSetNewOwnerToTheZeroAddress.selector);
    }
    _transferOwnership(newOwner);
  }

  /**
   * @dev Transfers ownership of the contract to a new account (`newOwner`).
   * Internal function without access restriction.
   */
  function _transferOwnership(address newOwner) internal virtual {
    address oldOwner = _owner;
    _owner = newOwner;
    emit OwnershipTransferred(oldOwner, newOwner);
  }
}

// File contracts/Global/OZ/Ownable2Step.sol

// Metadrop Contracts (v2.1.0)
// Metadrop based on OpenZeppelin Contracts (last updated v4.9.0) (access/Ownable2Step.sol)

pragma solidity 0.8.21;

/**
 * @dev Contract module which provides access control mechanism, where
 * there is an account (an owner) that can be granted exclusive access to
 * specific functions.
 *
 * The initial owner is specified at deployment time in the constructor for `Ownable`. This
 * can later be changed with {transferOwnership} and {acceptOwnership}.
 *
 * This module is used through inheritance. It will make available all functions
 * from parent (Ownable).
 */
abstract contract Ownable2Step is Ownable {
  address private _pendingOwner;

  event OwnershipTransferStarted(
    address indexed previousOwner,
    address indexed newOwner
  );

  /**
   * @dev Returns the address of the pending owner.
   */
  function pendingOwner() public view virtual returns (address) {
    return _pendingOwner;
  }

  /**
   * @dev Starts the ownership transfer of the contract to a new account. Replaces the pending transfer if there is one.
   * Can only be called by the current owner.
   */
  function transferOwnership(
    address newOwner
  ) public virtual override onlyOwner {
    _pendingOwner = newOwner;
    emit OwnershipTransferStarted(owner(), newOwner);
  }

  /**
   * @dev Transfers ownership of the contract to a new account (`newOwner`) and deletes any pending owner.
   * Internal function without access restriction.
   */
  function _transferOwnership(address newOwner) internal virtual override {
    delete _pendingOwner;
    super._transferOwnership(newOwner);
  }

  /**
   * @dev The new owner accepts the ownership transfer.
   */
  function acceptOwnership() public virtual {
    address sender = _msgSender();
    if (pendingOwner() != sender) {
      _revert(OwnableUnauthorizedAccount.selector);
    }
    _transferOwnership(sender);
  }
}

// File @openzeppelin/contracts/token/ERC20/extensions/[email protected]

// OpenZeppelin Contracts (last updated v4.9.0) (token/ERC20/extensions/IERC20Permit.sol)

pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC20 Permit extension allowing approvals to be made via signatures, as defined in
 * https://eips.ethereum.org/EIPS/eip-2612[EIP-2612].
 *
 * Adds the {permit} method, which can be used to change an account's ERC20 allowance (see {IERC20-allowance}) by
 * presenting a message signed by the account. By not relying on {IERC20-approve}, the token holder account doesn't
 * need to send a transaction, and thus is not required to hold Ether at all.
 */
interface IERC20Permit {
    /**
     * @dev Sets `value` as the allowance of `spender` over ``owner``'s tokens,
     * given ``owner``'s signed approval.
     *
     * IMPORTANT: The same issues {IERC20-approve} has related to transaction
     * ordering also apply here.
     *
     * Emits an {Approval} event.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     * - `deadline` must be a timestamp in the future.
     * - `v`, `r` and `s` must be a valid `secp256k1` signature from `owner`
     * over the EIP712-formatted function arguments.
     * - the signature must use ``owner``'s current nonce (see {nonces}).
     *
     * For more information on the signature format, see the
     * https://eips.ethereum.org/EIPS/eip-2612#specification[relevant EIP
     * section].
     */
    function permit(
        address owner,
        address spender,
        uint256 value,
        uint256 deadline,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) external;

    /**
     * @dev Returns the current nonce for `owner`. This value must be
     * included whenever a signature is generated for {permit}.
     *
     * Every successful call to {permit} increases ``owner``'s nonce by one. This
     * prevents a signature from being used multiple times.
     */
    function nonces(address owner) external view returns (uint256);

    /**
     * @dev Returns the domain separator used in the encoding of the signature for {permit}, as defined by {EIP712}.
     */
    // solhint-disable-next-line func-name-mixedcase
    function DOMAIN_SEPARATOR() external view returns (bytes32);
}

// File @openzeppelin/contracts/utils/[email protected]

// OpenZeppelin Contracts (last updated v4.9.0) (utils/Address.sol)

pragma solidity ^0.8.1;

/**
 * @dev Collection of functions related to the address type
 */
library Address {
    /**
     * @dev Returns true if `account` is a contract.
     *
     * [IMPORTANT]
     * ====
     * It is unsafe to assume that an address for which this function returns
     * false is an externally-owned account (EOA) and not a contract.
     *
     * Among others, `isContract` will return false for the following
     * types of addresses:
     *
     *  - an externally-owned account
     *  - a contract in construction
     *  - an address where a contract will be created
     *  - an address where a contract lived, but was destroyed
     *
     * Furthermore, `isContract` will also return true if the target contract within
     * the same transaction is already scheduled for destruction by `SELFDESTRUCT`,
     * which only has an effect at the end of a transaction.
     * ====
     *
     * [IMPORTANT]
     * ====
     * You shouldn't rely on `isContract` to protect against flash loan attacks!
     *
     * Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets
     * like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract
     * constructor.
     * ====
     */
    function isContract(address account) internal view returns (bool) {
        // This method relies on extcodesize/address.code.length, which returns 0
        // for contracts in construction, since the code is only stored at the end
        // of the constructor execution.

        return account.code.length > 0;
    }

    /**
     * @dev Replacement for Solidity's `transfer`: sends `amount` wei to
     * `recipient`, forwarding all available gas and reverting on errors.
     *
     * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
     * of certain opcodes, possibly making contracts go over the 2300 gas limit
     * imposed by `transfer`, making them unable to receive funds via
     * `transfer`. {sendValue} removes this limitation.
     *
     * https://consensys.net/diligence/blog/2019/09/stop-using-soliditys-transfer-now/[Learn more].
     *
     * IMPORTANT: because control is transferred to `recipient`, care must be
     * taken to not create reentrancy vulnerabilities. Consider using
     * {ReentrancyGuard} or the
     * https://solidity.readthedocs.io/en/v0.8.0/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
     */
    function sendValue(address payable recipient, uint256 amount) internal {
        require(address(this).balance >= amount, "Address: insufficient balance");

        (bool success, ) = recipient.call{value: amount}("");
        require(success, "Address: unable to send value, recipient may have reverted");
    }

    /**
     * @dev Performs a Solidity function call using a low level `call`. A
     * plain `call` is an unsafe replacement for a function call: use this
     * function instead.
     *
     * If `target` reverts with a revert reason, it is bubbled up by this
     * function (like regular Solidity function calls).
     *
     * Returns the raw returned data. To convert to the expected return value,
     * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
     *
     * Requirements:
     *
     * - `target` must be a contract.
     * - calling `target` with `data` must not revert.
     *
     * _Available since v3.1._
     */
    function functionCall(address target, bytes memory data) internal returns (bytes memory) {
        return functionCallWithValue(target, data, 0, "Address: low-level call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
     * `errorMessage` as a fallback revert reason when `target` reverts.
     *
     * _Available since v3.1._
     */
    function functionCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal returns (bytes memory) {
        return functionCallWithValue(target, data, 0, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but also transferring `value` wei to `target`.
     *
     * Requirements:
     *
     * - the calling contract must have an ETH balance of at least `value`.
     * - the called Solidity function must be `payable`.
     *
     * _Available since v3.1._
     */
    function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) {
        return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
    }

    /**
     * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
     * with `errorMessage` as a fallback revert reason when `target` reverts.
     *
     * _Available since v3.1._
     */
    function functionCallWithValue(
        address target,
        bytes memory data,
        uint256 value,
        string memory errorMessage
    ) internal returns (bytes memory) {
        require(address(this).balance >= value, "Address: insufficient balance for call");
        (bool success, bytes memory returndata) = target.call{value: value}(data);
        return verifyCallResultFromTarget(target, success, returndata, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a static call.
     *
     * _Available since v3.3._
     */
    function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
        return functionStaticCall(target, data, "Address: low-level static call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
     * but performing a static call.
     *
     * _Available since v3.3._
     */
    function functionStaticCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal view returns (bytes memory) {
        (bool success, bytes memory returndata) = target.staticcall(data);
        return verifyCallResultFromTarget(target, success, returndata, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a delegate call.
     *
     * _Available since v3.4._
     */
    function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
        return functionDelegateCall(target, data, "Address: low-level delegate call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
     * but performing a delegate call.
     *
     * _Available since v3.4._
     */
    function functionDelegateCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal returns (bytes memory) {
        (bool success, bytes memory returndata) = target.delegatecall(data);
        return verifyCallResultFromTarget(target, success, returndata, errorMessage);
    }

    /**
     * @dev Tool to verify that a low level call to smart-contract was successful, and revert (either by bubbling
     * the revert reason or using the provided one) in case of unsuccessful call or if target was not a contract.
     *
     * _Available since v4.8._
     */
    function verifyCallResultFromTarget(
        address target,
        bool success,
        bytes memory returndata,
        string memory errorMessage
    ) internal view returns (bytes memory) {
        if (success) {
            if (returndata.length == 0) {
                // only check isContract if the call was successful and the return data is empty
                // otherwise we already know that it was a contract
                require(isContract(target), "Address: call to non-contract");
            }
            return returndata;
        } else {
            _revert(returndata, errorMessage);
        }
    }

    /**
     * @dev Tool to verify that a low level call was successful, and revert if it wasn't, either by bubbling the
     * revert reason or using the provided one.
     *
     * _Available since v4.3._
     */
    function verifyCallResult(
        bool success,
        bytes memory returndata,
        string memory errorMessage
    ) internal pure returns (bytes memory) {
        if (success) {
            return returndata;
        } else {
            _revert(returndata, errorMessage);
        }
    }

    function _revert(bytes memory returndata, string memory errorMessage) private pure {
        // Look for revert reason and bubble it up if present
        if (returndata.length > 0) {
            // The easiest way to bubble the revert reason is using memory via assembly
            /// @solidity memory-safe-assembly
            assembly {
                let returndata_size := mload(returndata)
                revert(add(32, returndata), returndata_size)
            }
        } else {
            revert(errorMessage);
        }
    }
}

// File contracts/Global/OZ/SafeERC20.sol

// Metadrop Contracts (v2.1.0)
// Metadrop based on OpenZeppelin Contracts (last updated v4.9.0) (token/ERC20/utils/SafeERC20.sol)

pragma solidity 0.8.21;

/**
 * @title SafeERC20
 * @dev Wrappers around ERC20 operations that throw on failure (when the token
 * contract returns false). Tokens that return no value (and instead revert or
 * throw on failure) are also supported, non-reverting calls are assumed to be
 * successful.
 * To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract,
 * which allows you to call the safe operations as `token.safeTransfer(...)`, etc.
 */
library SafeERC20 {
  using Address for address;

  /**
   * @dev Transfer `value` amount of `token` from the calling contract to `to`. If `token` returns no value,
   * non-reverting calls are assumed to be successful.
   */
  function safeTransfer(IERC20 token, address to, uint256 value) internal {
    _callOptionalReturn(token, abi.encodeCall(token.transfer, (to, value)));
  }

  /**
   * @dev Transfer `value` amount of `token` from `from` to `to`, spending the approval given by `from` to the
   * calling contract. If `token` returns no value, non-reverting calls are assumed to be successful.
   */
  function safeTransferFrom(
    IERC20 token,
    address from,
    address to,
    uint256 value
  ) internal {
    _callOptionalReturn(
      token,
      abi.encodeCall(token.transferFrom, (from, to, value))
    );
  }

  /**
   * @dev Increase the calling contract's allowance toward `spender` by `value`. If `token` returns no value,
   * non-reverting calls are assumed to be successful.
   */
  function safeIncreaseAllowance(
    IERC20 token,
    address spender,
    uint256 value
  ) internal {
    uint256 oldAllowance = token.allowance(address(this), spender);
    forceApprove(token, spender, oldAllowance + value);
  }

  /**
   * @dev Decrease the calling contract's allowance toward `spender` by `value`. If `token` returns no value,
   * non-reverting calls are assumed to be successful.
   */
  function safeDecreaseAllowance(
    IERC20 token,
    address spender,
    uint256 value
  ) internal {
    unchecked {
      uint256 oldAllowance = token.allowance(address(this), spender);
      if (oldAllowance < value) {
        revert IErrors.DecreasedAllowanceBelowZero();
      }
      forceApprove(token, spender, oldAllowance - value);
    }
  }

  /**
   * @dev Set the calling contract's allowance toward `spender` to `value`. If `token` returns no value,
   * non-reverting calls are assumed to be successful. Compatible with tokens that require the approval to be set to
   * 0 before setting it to a non-zero value.
   */
  function forceApprove(IERC20 token, address spender, uint256 value) internal {
    bytes memory approvalCall = abi.encodeCall(token.approve, (spender, value));

    if (!_callOptionalReturnBool(token, approvalCall)) {
      _callOptionalReturn(token, abi.encodeCall(token.approve, (spender, 0)));
      _callOptionalReturn(token, approvalCall);
    }
  }

  /**
   * @dev Use a ERC-2612 signature to set the `owner` approval toward `spender` on `token`.
   * Revert on invalid signature.
   */
  function safePermit(
    IERC20Permit token,
    address owner,
    address spender,
    uint256 value,
    uint256 deadline,
    uint8 v,
    bytes32 r,
    bytes32 s
  ) internal {
    uint256 nonceBefore = token.nonces(owner);
    token.permit(owner, spender, value, deadline, v, r, s);
    uint256 nonceAfter = token.nonces(owner);
    if (nonceAfter != (nonceBefore + 1)) {
      revert IErrors.PermitDidNotSucceed();
    }
  }

  /**
   * @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, "call fail");
    if ((returndata.length != 0) && !abi.decode(returndata, (bool))) {
      revert IErrors.OperationDidNotSucceed();
    }
  }

  /**
   * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement
   * on the return value: the return value is optional (but if data is returned, it must not be false).
   * @param token The token targeted by the call.
   * @param data The call data (encoded using abi.encode or one of its variants).
   *
   * This is a variant of {_callOptionalReturn} that silents catches all reverts and returns a bool instead.
   */
  function _callOptionalReturnBool(
    IERC20 token,
    bytes memory data
  ) private returns (bool) {
    // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since
    // we're implementing it ourselves. We cannot use {Address-functionCall} here since this should return false
    // and not revert is the subcall reverts.

    (bool success, bytes memory returndata) = address(token).call(data);
    return
      success &&
      (returndata.length == 0 || abi.decode(returndata, (bool))) &&
      address(token).code.length > 0;
  }
}

// File contracts/ThirdParty/Unicrypt/IUniswapV2Locker.sol

// Interface definition for UniswapV2Locker.sol

pragma solidity 0.8.21;

interface IERCBurn {
  function burn(uint256 _amount) external;

  function approve(address spender, uint256 amount) external returns (bool);

  function allowance(address owner, address spender) external returns (uint256);

  function balanceOf(address account) external view returns (uint256);
}

interface IMigrator {
  function migrate(
    address lpToken,
    uint256 amount,
    uint256 unlockDate,
    address owner
  ) external returns (bool);
}

interface IUniswapV2Locker {
  struct UserInfo {
    EnumerableSet.AddressSet lockedTokens; // records all tokens the user has locked
    mapping(address => uint256[]) locksForToken; // map erc20 address to lock id for that token
  }

  struct TokenLock {
    uint256 lockDate; // the date the token was locked
    uint256 amount; // the amount of tokens still locked (initialAmount minus withdrawls)
    uint256 initialAmount; // the initial lock amount
    uint256 unlockDate; // the date the token can be withdrawn
    uint256 lockID; // lockID nonce per uni pair
    address owner;
  }

  struct FeeStruct {
    uint256 ethFee; // Small eth fee to prevent spam on the platform
    IERCBurn secondaryFeeToken; // UNCX or UNCL
    uint256 secondaryTokenFee; // optional, UNCX or UNCL
    uint256 secondaryTokenDiscount; // discount on liquidity fee for burning secondaryToken
    uint256 liquidityFee; // fee on univ2 liquidity tokens
    uint256 referralPercent; // fee for referrals
    IERCBurn referralToken; // token the refferer must hold to qualify as a referrer
    uint256 referralHold; // balance the referrer must hold to qualify as a referrer
    uint256 referralDiscount; // discount on flatrate fees for using a valid referral address
  }

  function setDev(address payable _devaddr) external;

  /**
   * @notice set the migrator contract which allows locked lp tokens to be migrated to uniswap v3
   */
  function setMigrator(IMigrator _migrator) external;

  function setSecondaryFeeToken(address _secondaryFeeToken) external;

  /**
   * @notice referrers need to hold the specified token and hold amount to be elegible for referral fees
   */
  function setReferralTokenAndHold(
    IERCBurn _referralToken,
    uint256 _hold
  ) external;

  function setFees(
    uint256 _referralPercent,
    uint256 _referralDiscount,
    uint256 _ethFee,
    uint256 _secondaryTokenFee,
    uint256 _secondaryTokenDiscount,
    uint256 _liquidityFee
  ) external;

  /**
   * @notice whitelisted accounts dont pay flatrate fees on locking
   */
  function whitelistFeeAccount(address _user, bool _add) external;

  /**
   * @notice Creates a new lock
   * @param _lpToken the univ2 token address
   * @param _amount amount of LP tokens to lock
   * @param _unlock_date the unix timestamp (in seconds) until unlock
   * @param _referral the referrer address if any or address(0) for none
   * @param _fee_in_eth fees can be paid in eth or in a secondary token such as UNCX with a discount on univ2 tokens
   * @param _withdrawer the user who can withdraw liquidity once the lock expires.
   */
  function lockLPToken(
    address _lpToken,
    uint256 _amount,
    uint256 _unlock_date,
    address payable _referral,
    bool _fee_in_eth,
    address payable _withdrawer
  ) external payable;

  /**
   * @notice extend a lock with a new unlock date, _index and _lockID ensure the correct lock is changed
   * this prevents errors when a user performs multiple tx per block possibly with varying gas prices
   */
  function relock(
    address _lpToken,
    uint256 _index,
    uint256 _lockID,
    uint256 _unlock_date
  ) external;

  /**
   * @notice withdraw a specified amount from a lock. _index and _lockID ensure the correct lock is changed
   * this prevents errors when a user performs multiple tx per block possibly with varying gas prices
   */
  function withdraw(
    address _lpToken,
    uint256 _index,
    uint256 _lockID,
    uint256 _amount
  ) external;

  /**
   * @notice increase the amount of tokens per a specific lock, this is preferable to creating a new lock, less fees, and faster loading on our live block explorer
   */
  function incrementLock(
    address _lpToken,
    uint256 _index,
    uint256 _lockID,
    uint256 _amount
  ) external;

  /**
   * @notice split a lock into two seperate locks, useful when a lock is about to expire and youd like to relock a portion
   * and withdraw a smaller portion
   */
  function splitLock(
    address _lpToken,
    uint256 _index,
    uint256 _lockID,
    uint256 _amount
  ) external payable;

  /**
   * @notice transfer a lock to a new owner, e.g. presale project -> project owner
   */
  function transferLockOwnership(
    address _lpToken,
    uint256 _index,
    uint256 _lockID,
    address payable _newOwner
  ) external;

  /**
   * @notice migrates liquidity to uniswap v3
   */
  function migrate(
    address _lpToken,
    uint256 _index,
    uint256 _lockID,
    uint256 _amount
  ) external;

  function getNumLocksForToken(
    address _lpToken
  ) external view returns (uint256);

  function getNumLockedTokens() external view returns (uint256);

  function getLockedTokenAtIndex(
    uint256 _index
  ) external view returns (address);

  // user functions
  function getUserNumLockedTokens(
    address _user
  ) external view returns (uint256);

  function getUserLockedTokenAtIndex(
    address _user,
    uint256 _index
  ) external view returns (address);

  function getUserNumLocksForToken(
    address _user,
    address _lpToken
  ) external view returns (uint256);

  function getUserLockForTokenAtIndex(
    address _user,
    address _lpToken,
    uint256 _index
  )
    external
    view
    returns (uint256, uint256, uint256, uint256, uint256, address);

  // whitelist
  function getWhitelistedUsersLength() external view returns (uint256);

  function getWhitelistedUserAtIndex(
    uint256 _index
  ) external view returns (address);

  function getUserWhitelistStatus(address _user) external view returns (bool);
}

// File contracts/ThirdParty/WETH/IWETH.sol

pragma solidity 0.8.21;

interface IWETH is IERC20 {
  function deposit() external payable;

  function withdraw(uint256 wad) external;
}

// File contracts/ERC20Factory/ERC20/ERC20ByMetadrop.sol

// Metadrop Contracts (v2.1.0)

pragma solidity 0.8.21;

/**
 * @dev Metadrop core ERC-20 contract
 *
 * @dev Implementation of the {IERC20} interface.
 *
 */
contract ERC20ByMetadrop is Context, IERC20ByMetadrop, Ownable2Step {
  bytes32 public constant x_META_ID_HASH =
    0x4468f4ccf832686c18f756464afb6adb6b9ba870dc25c30726aaea2392002e5a;

  using EnumerableSet for EnumerableSet.AddressSet;
  using EnumerableSet for EnumerableSet.Bytes32Set;
  using SafeERC20 for IERC20;

  uint256 public constant x_CONST_VERSION = 100020001000000000;
  uint256 internal constant CONST_BP_DENOM = 10000;
  uint256 internal constant CONST_ROUND_DEC = 100000000000;
  uint256 internal constant CONST_CALL_GAS_LIMIT = 50000;
  uint256 internal constant CONST_MAX_SWAP_THRESHOLD_MULTIPLE = 20;
  uint256 internal constant CONST_MIN_SWAP_THRESHOLD_BP = 1;

  uint256 public immutable lpSupply;
  uint256 public immutable projectSupply;
  uint256 public immutable botProtectionDurationInSeconds;
  uint256 public immutable metadropTaxPeriodInDays;
  uint256 public immutable metadropBuyTaxProportionBasisPoints;
  uint256 public immutable metadropSellTaxProportionBasisPoints;
  uint256 public immutable metadropMinBuyTaxBasisPoints;
  uint256 public immutable metadropMinSellTaxBasisPoints;
  uint256 public immutable autoBurnDurationInBlocks;
  uint256 public immutable autoBurnBasisPoints;
  address public immutable metadropTaxRecipient;
  address public immutable uniswapV2Pair;
  address public immutable driPool;
  address public immutable lpOwner;
  address public immutable projectSupplyRecipient;
  address public immutable metadropFactory;

  bool internal immutable _tokenHasTax;
  IUniswapV2Locker internal immutable _tokenVault;
  IUniswapV2Router02 internal immutable _uniswapRouter;
  VaultType public immutable vaultType;

  /** @dev {Storage Slot 1} Vars read as part of transfers packed to a single
   * slot for warm reads.
   *   Slot 1:
   *      120
   *       32
   *       32
   *   16 * 4
   *        8
   *   ------
   *      256
   *   ------ */
  uint120 private _totalSupply;
  uint32 public fundedDate;
  uint32 public fundedBlock;
  uint16 public projectBuyTaxBasisPoints;
  uint16 public projectSellTaxBasisPoints;
  uint16 public metadropBuyTaxBasisPoints;
  uint16 public metadropSellTaxBasisPoints;
  /** @dev {_autoSwapInProgress} We start with {_autoSwapInProgress} ON, as we don't want to
   * call autoswap when processing initial liquidity from this address. We turn this OFF when
   * liquidity has been loaded, and use this bool to control processing during auto-swaps
   * from that point onwards. */
  bool private _autoSwapInProgress = true;

  /** @dev {Storage Slot 2} Vars read as part of transfers packed to a single
   * slot for warm reads.
   *   Slot 1:
   *      120
   *      120
   *       16
   *   ------
   *      256
   *   ------ */
  uint120 public maxTokensPerTransaction;
  uint120 public maxTokensPerWallet;
  uint16 public swapThresholdBasisPoints;

  /** @dev {Storage Slot 3} Not read / written in transfers (unless autoswap taking place):
   *      160
   *       88
   *        8
   *   ------
   *      256
   *   ------ */
  address public projectTaxRecipient;
  uint88 public lpLockupInDays;
  bool public burnLPTokens;

  /** @dev {Storage Slot 4} Potentially written in transfers:
   *   Slot 3:
   *      128
   *      128
   *   ------
   *      256
   *   ------ */
  uint128 public projectTaxPendingSwap;
  uint128 public metadropTaxPendingSwap;

  /** @dev {Storage Slot 5 to n} Not read as part of transfers etc. */
  string private _name;
  string private _symbol;

  /** @dev {_balances} Addresses balances */
  mapping(address => uint256) private _balances;

  /** @dev {_allowances} Addresses allocance details */
  mapping(address => mapping(address => uint256)) private _allowances;

  /** @dev {_validCallerCodeHashes} Code hashes of callers we consider valid */
  EnumerableSet.Bytes32Set private _validCallerCodeHashes;

  /** @dev {_liquidityPools} Enumerable set for liquidity pool addresses */
  EnumerableSet.AddressSet private _liquidityPools;

  /** @dev {_unlimited} Enumerable set for addresses where limits do not apply */
  EnumerableSet.AddressSet private _unlimited;

  /**
   * @dev {constructor}
   *
   * @param integrationAddresses_ The project owner, uniswap router, unicrypt vault, metadrop factory and pool template.
   * @param baseParams_ configuration of this ERC20.
   * @param supplyParams_ Supply configuration of this ERC20.
   * @param taxParams_  Tax configuration of this ERC20
   * @param taxParams_  Launch pool configuration of this ERC20
   */
  constructor(
    address[5] memory integrationAddresses_,
    bytes memory baseParams_,
    bytes memory supplyParams_,
    bytes memory taxParams_,
    bytes memory poolParams_
  ) {
    _decodeBaseParams(integrationAddresses_[0], baseParams_);
    _uniswapRouter = IUniswapV2Router02(integrationAddresses_[1]);
    _tokenVault = IUniswapV2Locker(integrationAddresses_[2]);
    metadropFactory = (integrationAddresses_[3]);

    ERC20SupplyParameters memory supplyParams = abi.decode(
      supplyParams_,
      (ERC20SupplyParameters)
    );

    ERC20TaxParameters memory taxParams = abi.decode(
      taxParams_,
      (ERC20TaxParameters)
    );

    driPool = integrationAddresses_[4];

    ERC20PoolParameters memory poolParams;

    if (integrationAddresses_[4] != address(0)) {
      poolParams = abi.decode(poolParams_, (ERC20PoolParameters));
    }

    _processSupplyParams(supplyParams, poolParams);
    projectSupplyRecipient = supplyParams.projectSupplyRecipient;
    lpSupply = supplyParams.lpSupply * (10 ** decimals());
    projectSupply = supplyParams.projectSupply * (10 ** decimals());
    botProtectionDurationInSeconds = supplyParams
      .botProtectionDurationInSeconds;
    lpOwner = supplyParams.projectLPOwner;

    _tokenHasTax = _processTaxParams(taxParams);

    metadropTaxPeriodInDays = taxParams.metadropTaxPeriodInDays;
    metadropTaxRecipient = taxParams.metadropTaxRecipient;
    metadropBuyTaxProportionBasisPoints = taxParams
      .metadropBuyTaxProportionBasisPoints;
    metadropSellTaxProportionBasisPoints = taxParams
      .metadropSellTaxProportionBasisPoints;
    metadropMinBuyTaxBasisPoints = uint16(
      taxParams.metadropMinBuyTaxBasisPoints
    );
    metadropMinSellTaxBasisPoints = uint16(
      taxParams.metadropMinSellTaxBasisPoints
    );
    autoBurnDurationInBlocks = taxParams.autoBurnDurationInBlocks;
    autoBurnBasisPoints = taxParams.autoBurnBasisPoints;

    vaultType = VaultType.unicrypt;

    _mintBalances(
      lpSupply,
      projectSupply,
      poolParams.poolSupply * (10 ** decimals())
    );

    uniswapV2Pair = _createPair();
  }

  /**
   * @dev {onlyOwnerFactoryOrPool}
   *
   * Throws if called by any account other than the owner, factory or pool.
   */
  modifier onlyOwnerFactoryOrPool() {
    if (
      metadropFactory != _msgSender() &&
      owner() != _msgSender() &&
      driPool != _msgSender()
    ) {
      _revert(CallerIsNotFactoryProjectOwnerOrPool.selector);
    }
    _;
  }

  /**
   * @dev {notDuringAutoswap}
   *
   * Throws if called during an autoswap
   */
  modifier notDuringAutoswap() {
    if (_autoSwapInProgress) {
      _revert(CannotPerformDuringAutoswap.selector);
    }
    _;
  }

  /**
   * @dev function {_decodeBaseParams}
   *
   * Decode NFT Parameters
   *
   * @param projectOwner_ The owner of this contract
   * @param encodedBaseParams_ The base params encoded into a bytes array
   */
  function _decodeBaseParams(
    address projectOwner_,
    bytes memory encodedBaseParams_
  ) internal {
    _transferOwnership(projectOwner_);

    (_name, _symbol) = abi.decode(encodedBaseParams_, (string, string));
  }

  /**
   * @dev function {_processSupplyParams}
   *
   * Process provided supply params
   *
   * @param erc20SupplyParameters_ The supply params
   * @param erc20PoolParameters_ The pool params
   */
  function _processSupplyParams(
    ERC20SupplyParameters memory erc20SupplyParameters_,
    ERC20PoolParameters memory erc20PoolParameters_
  ) internal {
    if (
      erc20SupplyParameters_.maxSupply !=
      (erc20SupplyParameters_.lpSupply +
        erc20SupplyParameters_.projectSupply +
        erc20PoolParameters_.poolSupply)
    ) {
      _revert(SupplyTotalMismatch.selector);
    }

    if (erc20SupplyParameters_.maxSupply > type(uint120).max) {
      _revert(MaxSupplyTooHigh.selector);
    }

    if (erc20SupplyParameters_.lpLockupInDays > type(uint88).max) {
      _revert(LPLockUpMustFitUint88.selector);
    }

    if (
      erc20SupplyParameters_.botProtectionDurationInSeconds > type(uint128).max
    ) {
      _revert(botProtectionDurationInSecondsMustFitUint128.selector);
    }

    if (erc20SupplyParameters_.maxTokensPerWallet > type(uint120).max) {
      _revert(LimitTooHigh.selector);
    }

    if (erc20SupplyParameters_.maxTokensPerTxn > type(uint120).max) {
      _revert(LimitTooHigh.selector);
    }

    maxTokensPerWallet = uint120(
      erc20SupplyParameters_.maxTokensPerWallet * (10 ** decimals())
    );
    maxTokensPerTransaction = uint120(
      erc20SupplyParameters_.maxTokensPerTxn * (10 ** decimals())
    );
    lpLockupInDays = uint88(erc20SupplyParameters_.lpLockupInDays);
    burnLPTokens = erc20SupplyParameters_.burnLPTokens;

    _unlimited.add(erc20SupplyParameters_.projectSupplyRecipient);
    _unlimited.add(address(this));
    _unlimited.add(address(0));
  }

  /**
   * @dev function {_processTaxParams}
   *
   * Process provided tax params
   *
   * @param erc20TaxParameters_ The tax params
   */
  function _processTaxParams(
    ERC20TaxParameters memory erc20TaxParameters_
  ) internal returns (bool tokenHasTax_) {
    /**
     * @dev We use the immutable var {_tokenHasTax} to avoid unneccesary storage writes and reads. If this
     * token does NOT have tax applied then there is no need to store or read these parameters, and we can
     * avoid this simply by checking the immutable var. Pass back the value for this var from this method.
     */
    if (
      erc20TaxParameters_.projectBuyTaxBasisPoints == 0 &&
      erc20TaxParameters_.projectSellTaxBasisPoints == 0 &&
      erc20TaxParameters_.metadropBuyTaxBasisPoints == 0 &&
      erc20TaxParameters_.metadropSellTaxBasisPoints == 0
    ) {
      return false;
    } else {
      // Validate that the sum of all buy deductions does not equal or exceed
      // 10,000 basis points (i.e. 100%).
      if (
        (erc20TaxParameters_.projectBuyTaxBasisPoints +
          erc20TaxParameters_.metadropBuyTaxBasisPoints +
          erc20TaxParameters_.autoBurnBasisPoints) >= CONST_BP_DENOM
      ) {
        _revert(DeductionsOnBuyExceedOrEqualOneHundredPercent.selector);
      }

      projectBuyTaxBasisPoints = uint16(
        erc20TaxParameters_.projectBuyTaxBasisPoints
      );
      projectSellTaxBasisPoints = uint16(
        erc20TaxParameters_.projectSellTaxBasisPoints
      );
      metadropBuyTaxBasisPoints = uint16(
        erc20TaxParameters_.metadropBuyTaxBasisPoints
      );
      metadropSellTaxBasisPoints = uint16(
        erc20TaxParameters_.metadropSellTaxBasisPoints
      );

      if (
        erc20TaxParameters_.taxSwapThresholdBasisPoints <
        CONST_MIN_SWAP_THRESHOLD_BP
      ) {
        _revert(SwapThresholdTooLow.selector);
      }

      swapThresholdBasisPoints = uint16(
        erc20TaxParameters_.taxSwapThresholdBasisPoints
      );

      projectTaxRecipient = erc20TaxParameters_.projectTaxRecipient;
      return true;
    }
  }

  /**
   * @dev function {_mintBalances}
   *
   * Mint initial balances
   *
   * @param lpMint_ The number of tokens for liquidity
   * @param projectMint_ The number of tokens for the project treasury
   * @param poolMint_ The number of tokens for the launch pool
   */
  function _mintBalances(
    uint256 lpMint_,
    uint256 projectMint_,
    uint256 poolMint_
  ) internal {
    if (lpMint_ > 0) {
      _mint(address(this), lpMint_);
    }

    if (projectMint_ > 0) {
      _mint(projectSupplyRecipient, projectMint_);
    }

    if (poolMint_ > 0) {
      _mint(driPool, poolMint_);
    }
  }

  /**
   * @dev function {_createPair}
   *
   * Create the uniswap pair
   *
   * @return uniswapV2Pair_ The pair address
   */
  function _createPair() internal returns (address uniswapV2Pair_) {
    if (_totalSupply > 0) {
      uniswapV2Pair_ = IUniswapV2Factory(_uniswapRouter.factory()).createPair(
        address(this),
        _uniswapRouter.WETH()
      );

      _liquidityPools.add(uniswapV2Pair_);
      emit LiquidityPoolCreated(uniswapV2Pair_);
    }
    _unlimited.add(address(_uniswapRouter));
    _unlimited.add(uniswapV2Pair_);
    return (uniswapV2Pair_);
  }

  /**
   * @dev function {addInitialLiquidity}
   *
   * Add initial liquidity to the uniswap pair
   *
   * @param vaultFee_ The vault fee in wei. This must match the required fee from the external vault contract.
   * @param lpLockupInDaysOverride_ The number of days to lock liquidity NOTE you can pass 0 to use the stored value.
   * This value is an override, and will override a stored value which is LOWER that it. If the value you are passing is
   * LOWER than the stored value the stored value will not be reduced.
   *
   * Example usage 1: When creating the coin the lpLockupInDays is set to 0. This means that on this call the
   * user can set the lockup to any value they like, as all integer values greater than zero will be used to override
   * that set in storage.
   *
   * Example usage 2: When using a DRI Pool the lockup period is set on this contract and the pool need not know anything
   * about this setting. The pool can pass back a 0 on this call and know that the existing value stored on this contract
   * will be used.
   * @param burnLPTokensOverride_ If the LP tokens should be burned (otherwise they are locked). This is an override field
   * that can ONLY be used to override a held value of FALSE with a new value of TRUE.
   *
   * Example usage 1: When creating the coin the user didn't add liquidity, or specify that the LP tokens were to be burned.
   * So burnLPTokens is held as FALSE. When they add liquidity they want to lock tokens, so they pass this in as FALSE again,
   * and it remains FALSE.
   *
   * Example usage 2: As above, but when later adding liquidity the user wants to burn the LP. So the stored value is FALSE
   * and the user passes TRUE into this method. The TRUE overrides the held value of FALSE and the tokens are burned.
   *
   * Example uusage 3: The user is using a DRI pool and they have specified on the coin creation that the LP tokens are to
   * be burned. This contract therefore holds TRUE for burnLPTokens. The DRI pool does not need to know what the user has
   * selected. It can safely pass back FALSE to this method call and the stored value of TRUE will remain, resulting in the
   * LP tokens being burned.
   */
  function addInitialLiquidity(
    uint256 vaultFee_,
    uint256 lpLockupInDaysOverride_,
    bool burnLPTokensOverride_
  ) external payable onlyOwnerFactoryOrPool {
    uint256 ethForLiquidity;

    if ((burnLPTokens == false) && (burnLPTokensOverride_ == true)) {
      burnLPTokens = true;
    }

    if (burnLPTokens) {
      if (msg.value == 0) {
        _revert(NoETHForLiquidityPair.selector);
      }
      ethForLiquidity = msg.value;
    } else {
      if (vaultFee_ >= msg.value) {
        // The amount of ETH MUST exceed the vault fee, otherwise what liquidity are we adding?
        _revert(NoETHForLiquidityPair.selector);
      }
      ethForLiquidity = msg.value - vaultFee_;
    }

    if (lpLockupInDaysOverride_ > lpLockupInDays) {
      lpLockupInDays = uint88(lpLockupInDaysOverride_);
    }

    _addInitialLiquidity(ethForLiquidity, vaultFee_);
  }

  /**
   * @dev function {_addInitialLiquidity}
   *
   * Add initial liquidity to the uniswap pair (internal function that does processing)
   *
   * @param ethAmount_ The amount of ETH passed into the call
   * @param vaultFee_ The vault fee in wei. This must match the required fee from the external vault contract.
   */
  function _addInitialLiquidity(
    uint256 ethAmount_,
    uint256 vaultFee_
  ) internal {
    // Funded date is the date of first funding. We can only add initial liquidity once. If this date is set,
    // we cannot proceed
    if (fundedDate != 0) {
      _revert(InitialLiquidityAlreadyAdded.selector);
    }

    fundedDate = uint32(block.timestamp);
    fundedBlock = uint32(block.number);

    // Can only do this if this contract holds tokens:
    if (balanceOf(address(this)) == 0) {
      _revert(NoTokenForLiquidityPair.selector);
    }

    // Approve the uniswap router for an inifinite amount (max uint256)
    // This means that we don't need to worry about later incrememtal
    // approvals on tax swaps, as the uniswap router allowance will never
    // be decreased (see code in decreaseAllowance for reference)
    _approve(address(this), address(_uniswapRouter), type(uint256).max);

    // Add the liquidity:
    (uint256 amountA, uint256 amountB, uint256 lpTokens) = _uniswapRouter
      .addLiquidityETH{value: ethAmount_}(
      address(this),
      balanceOf(address(this)),
      0,
      0,
      address(this),
      block.timestamp
    );

    emit InitialLiquidityAdded(amountA, amountB, lpTokens);

    // We now set this to false so that future transactions can be eligibile for autoswaps
    _autoSwapInProgress = false;

    // Are we locking, or burning?
    if (burnLPTokens) {
      _burnLiquidity(lpTokens);
    } else {
      // Lock the liquidity:
      _addLiquidityToVault(vaultFee_, lpTokens);
    }
  }

  /**
   * @dev function {_addLiquidityToVault}
   *
   * Lock initial liquidity on vault contract
   *
   * @param vaultFee_ The vault fee in wei. This must match the required fee from the external vault contract.
   * @param lpTokens_ The amount of LP tokens to be locked
   */
  function _addLiquidityToVault(uint256 vaultFee_, uint256 lpTokens_) internal {
    IERC20(uniswapV2Pair).approve(address(_tokenVault), lpTokens_);

    _tokenVault.lockLPToken{value: vaultFee_}(
      uniswapV2Pair,
      IERC20(uniswapV2Pair).balanceOf(address(this)),
      block.timestamp + (lpLockupInDays * 1 days),
      payable(address(0)),
      true,
      payable(lpOwner)
    );

    emit LiquidityLocked(lpTokens_, lpLockupInDays);
  }

  /**
   * @dev function {_burnLiquidity}
   *
   * Burn LP tokens
   *
   * @param lpTokens_ The amount of LP tokens to be locked
   */
  function _burnLiquidity(uint256 lpTokens_) internal {
    IERC20(uniswapV2Pair).transfer(address(0), lpTokens_);

    emit LiquidityBurned(lpTokens_);
  }

  /**
   * @dev function {isLiquidityPool}
   *
   * Return if an address is a liquidity pool
   *
   * @param queryAddress_ The address being queried
   * @return bool The address is / isn't a liquidity pool
   */
  function isLiquidityPool(address queryAddress_) public view returns (bool) {
    /** @dev We check the uniswapV2Pair address first as this is an immutable variable and therefore does not need
     * to be fetched from storage, saving gas if this address IS the uniswapV2Pool. We also add this address
     * to the enumerated set for ease of reference (for example it is returned in the getter), and it does
     * not add gas to any other calls, that still complete in 0(1) time.
     */
    return (queryAddress_ == uniswapV2Pair ||
      _liquidityPools.contains(queryAddress_));
  }

  /**
   * @dev function {liquidityPools}
   *
   * Returns a list of all liquidity pools
   *
   * @return liquidityPools_ a list of all liquidity pools
   */
  function liquidityPools()
    external
    view
    returns (address[] memory liquidityPools_)
  {
    return (_liquidityPools.values());
  }

  /**
   * @dev function {addLiquidityPool} onlyOwner
   *
   * Allows the manager to add a liquidity pool to the pool enumerable set
   *
   * @param newLiquidityPool_ The address of the new liquidity pool
   */
  function addLiquidityPool(address newLiquidityPool_) public onlyOwner {
    // Don't allow calls that didn't pass an address:
    if (newLiquidityPool_ == address(0)) {
      _revert(LiquidityPoolCannotBeAddressZero.selector);
    }
    // Only allow smart contract addresses to be added, as only these can be pools:
    if (newLiquidityPool_.code.length == 0) {
      _revert(LiquidityPoolMustBeAContractAddress.selector);
    }
    // Add this to the enumerated list:
    _liquidityPools.add(newLiquidityPool_);
    emit LiquidityPoolAdded(newLiquidityPool_);
  }

  /**
   * @dev function {removeLiquidityPool} onlyOwner
   *
   * Allows the manager to remove a liquidity pool
   *
   * @param removedLiquidityPool_ The address of the old removed liquidity pool
   */
  function removeLiquidityPool(
    address removedLiquidityPool_
  ) external onlyOwner {
    // Remove this from the enumerated list:
    _liquidityPools.remove(removedLiquidityPool_);
    emit LiquidityPoolRemoved(removedLiquidityPool_);
  }

  /**
   * @dev function {isUnlimited}
   *
   * Return if an address is unlimited (is not subject to per txn and per wallet limits)
   *
   * @param queryAddress_ The address being queried
   * @return bool The address is / isn't unlimited
   */
  function isUnlimited(address queryAddress_) public view returns (bool) {
    return (_unlimited.contains(queryAddress_));
  }

  /**
   * @dev function {unlimitedAddresses}
   *
   * Returns a list of all unlimited addresses
   *
   * @return unlimitedAddresses_ a list of all unlimited addresses
   */
  function unlimitedAddresses()
    external
    view
    returns (address[] memory unlimitedAddresses_)
  {
    return (_unlimited.values());
  }

  /**
   * @dev function {addUnlimited} onlyOwner
   *
   * Allows the manager to add an unlimited address
   *
   * @param newUnlimited_ The address of the new unlimited address
   */
  function addUnlimited(address newUnlimited_) external onlyOwner {
    // Add this to the enumerated list:
    _unlimited.add(newUnlimited_);
    emit UnlimitedAddressAdded(newUnlimited_);
  }

  /**
   * @dev function {removeUnlimited} onlyOwner
   *
   * Allows the manager to remove an unlimited address
   *
   * @param removedUnlimited_ The address of the old removed unlimited address
   */
  function removeUnlimited(address removedUnlimited_) external onlyOwner {
    // Remove this from the enumerated list:
    _unlimited.remove(removedUnlimited_);
    emit UnlimitedAddressRemoved(removedUnlimited_);
  }

  /**
   * @dev function {isValidCaller}
   *
   * Return if an address is a valid caller
   *
   * @param queryHash_ The code hash being queried
   * @return bool The address is / isn't a valid caller
   */
  function isValidCaller(bytes32 queryHash_) public view returns (bool) {
    return (_validCallerCodeHashes.contains(queryHash_));
  }

  /**
   * @dev function {validCallers}
   *
   * Returns a list of all valid caller code hashes
   *
   * @return validCallerHashes_ a list of all valid caller code hashes
   */
  function validCallers()
    external
    view
    returns (bytes32[] memory validCallerHashes_)
  {
    return (_validCallerCodeHashes.values());
  }

  /**
   * @dev function {addValidCaller} onlyOwner
   *
   * Allows the owner to add the hash of a valid caller
   *
   * @param newValidCallerHash_ The hash of the new valid caller
   */
  function addValidCaller(bytes32 newValidCallerHash_) external onlyOwner {
    _validCallerCodeHashes.add(newValidCallerHash_);
    emit ValidCallerAdded(newValidCallerHash_);
  }

  /**
   * @dev function {removeValidCaller} onlyOwner
   *
   * Allows the owner to remove a valid caller
   *
   * @param removedValidCallerHash_ The hash of the old removed valid caller
   */
  function removeValidCaller(
    bytes32 removedValidCallerHash_
  ) external onlyOwner {
    // Remove this from the enumerated list:
    _validCallerCodeHashes.remove(removedValidCallerHash_);
    emit ValidCallerRemoved(removedValidCallerHash_);
  }

  /**
   * @dev function {setProjectTaxRecipient} onlyOwner
   *
   * Allows the manager to set the project tax recipient address
   *
   * @param projectTaxRecipient_ New recipient address
   */
  function setProjectTaxRecipient(
    address projectTaxRecipient_
  ) external onlyOwner {
    projectTaxRecipient = projectTaxRecipient_;
    emit ProjectTaxRecipientUpdated(projectTaxRecipient_);
  }

  /**
   * @dev function {setSwapThresholdBasisPoints} onlyOwner
   *
   * Allows the manager to set the autoswap threshold
   *
   * @param swapThresholdBasisPoints_ New swap threshold in basis points
   */
  function setSwapThresholdBasisPoints(
    uint16 swapThresholdBasisPoints_
  ) external onlyOwner {
    if (swapThresholdBasisPoints < CONST_MIN_SWAP_THRESHOLD_BP) {
      _revert(SwapThresholdTooLow.selector);
    }
    uint256 oldswapThresholdBasisPoints = swapThresholdBasisPoints;
    swapThresholdBasisPoints = swapThresholdBasisPoints_;
    emit AutoSwapThresholdUpdated(
      oldswapThresholdBasisPoints,
      swapThresholdBasisPoints_
    );
  }

  /**
   * @dev function {setProjectTaxRates} onlyOwner
   *
   * Change the tax rates, subject to only ever decreasing
   *
   * @param newProjectBuyTaxBasisPoints_ The new buy tax rate
   * @param newProjectSellTaxBasisPoints_ The new sell tax rate
   */
  function setProjectTaxRates(
    uint16 newProjectBuyTaxBasisPoints_,
    uint16 newProjectSellTaxBasisPoints_
  ) external onlyOwner {
    uint16 oldBuyTaxBasisPoints = projectBuyTaxBasisPoints;
    uint16 oldSellTaxBasisPoints = projectSellTaxBasisPoints;
    // Cannot increase, down only
    if (newProjectBuyTaxBasisPoints_ > oldBuyTaxBasisPoints) {
      _revert(CanOnlyReduce.selector);
    }
    // Cannot increase, down only
    if (newProjectSellTaxBasisPoints_ > oldSellTaxBasisPoints) {
      _revert(CanOnlyReduce.selector);
    }
    projectBuyTaxBasisPoints = newProjectBuyTaxBasisPoints_;
    projectSellTaxBasisPoints = newProjectSellTaxBasisPoints_;

    // We set the metadrop tax rates off of the project tax rates:
    //
    // 1) If the project tax rate is zero then the metadrop tax rate is zero
    // 2) If the project tax rate is not zero the metadrop tax rate is the
    //    greater of:
    //    a) The metadrop tax proportion basis points of the project rate
    //    b) the base metadrop tax rate.
    //
    // Examples:
    //
    // A) The project buy tax rate is zero and the sell tax rate is 3%. The metadrop
    // tax proportion basis points is 1000, meaning the metadrop proportion is 10% of the
    // project tax rate. The base metadrop tax rate is 50 basis points i.e. 0.5%.
    //
    // * Metadrop buy tax = 0% (as the project buy tax is zero)
    // * Metadrop sell tax = 0.5%. 10% of the project sell tax is 0.3%. As this is below
    // the base level of 0.5% we set the metadrop tax to 0.5%
    //
    // B) The project buy tax rate is 4% and the sell tax rate is 20%. The metadrop tax
    // proportion basis points is 1000, meaning the metadrop proportion is 10% of the
    // project tax rate. The base metadrop tax rate is 50 basis points i.e. 0.5%.
    //
    // * Metadrop buy tax = 0.5%. 10% of the project rate would be 0.4%, so we use the base rate)
    // * Metadrop sell tax = 2%. 10% of the project rate is 2%, which is higher than the
    //   base rate of 0.5%.

    uint16 oldMetadropBuyTaxBasisPoints = metadropBuyTaxBasisPoints;
    uint16 oldMetadropSellTaxBasisPoints = metadropSellTaxBasisPoints;

    // Process the buy tax rate first:
    if (newProjectBuyTaxBasisPoints_ == 0) {
      metadropBuyTaxBasisPoints = 0;
    } else {
      uint256 derivedMetadropBuyTaxRate = (newProjectBuyTaxBasisPoints_ *
        metadropBuyTaxProportionBasisPoints) / CONST_BP_DENOM;
      if (derivedMetadropBuyTaxRate < metadropMinBuyTaxBasisPoints) {
        metadropBuyTaxBasisPoints = uint16(metadropMinBuyTaxBasisPoints);
      } else {
        metadropBuyTaxBasisPoints = uint16(derivedMetadropBuyTaxRate);
      }
    }

    // And now the sell tax rate:
    if (newProjectSellTaxBasisPoints_ == 0) {
      metadropSellTaxBasisPoints = 0;
    } else {
      uint256 derivedMetadropSellTaxRate = (newProjectSellTaxBasisPoints_ *
        metadropSellTaxProportionBasisPoints) / CONST_BP_DENOM;
      if (derivedMetadropSellTaxRate < metadropMinSellTaxBasisPoints) {
        metadropSellTaxBasisPoints = uint16(metadropMinSellTaxBasisPoints);
      } else {
        metadropSellTaxBasisPoints = uint16(derivedMetadropSellTaxRate);
      }
    }

    // Emit a message if there has been a change:
    if (
      oldMetadropBuyTaxBasisPoints != metadropBuyTaxBasisPoints ||
      oldMetadropSellTaxBasisPoints != metadropSellTaxBasisPoints
    ) {
      emit MetadropTaxBasisPointsChanged(
        oldMetadropBuyTaxBasisPoints,
        metadropBuyTaxBasisPoints,
        oldMetadropSellTaxBasisPoints,
        metadropSellTaxBasisPoints
      );
    }

    emit ProjectTaxBasisPointsChanged(
      oldBuyTaxBasisPoints,
      newProjectBuyTaxBasisPoints_,
      oldSellTaxBasisPoints,
      newProjectSellTaxBasisPoints_
    );
  }

  /**
   * @dev function {setLimits} onlyOwner
   *
   * Change the limits on transactions and holdings
   *
   * @param newMaxTokensPerTransaction_ The new per txn limit
   * @param newMaxTokensPerWallet_ The new tokens per wallet limit
   */
  function setLimits(
    uint256 newMaxTokensPerTransaction_,
    uint256 newMaxTokensPerWallet_
  ) external onlyOwner {
    if (newMaxTokensPerWallet_ > type(uint120).max) {
      _revert(LimitTooHigh.selector);
    }

    if (newMaxTokensPerTransaction_ > type(uint120).max) {
      _revert(LimitTooHigh.selector);
    }

    uint256 oldMaxTokensPerTransaction = maxTokensPerTransaction;
    uint256 oldMaxTokensPerWallet = maxTokensPerWallet;
    // Limit can only be increased:
    if (
      (oldMaxTokensPerTransaction == 0 && newMaxTokensPerTransaction_ != 0) ||
      (oldMaxTokensPerWallet == 0 && newMaxTokensPerWallet_ != 0)
    ) {
      _revert(LimitsCanOnlyBeRaised.selector);
    }
    if (
      ((newMaxTokensPerTransaction_ != 0) &&
        newMaxTokensPerTransaction_ < oldMaxTokensPerTransaction) ||
      ((newMaxTokensPerWallet_ != 0) &&
        newMaxTokensPerWallet_ < oldMaxTokensPerWallet)
    ) {
      _revert(LimitsCanOnlyBeRaised.selector);
    }

    maxTokensPerTransaction = uint120(newMaxTokensPerTransaction_);
    maxTokensPerWallet = uint120(newMaxTokensPerWallet_);

    emit LimitsUpdated(
      oldMaxTokensPerTransaction,
      newMaxTokensPerTransaction_,
      oldMaxTokensPerWallet,
      newMaxTokensPerWallet_
    );
  }

  /**
   * @dev function {limitsEnforced}
   *
   * Return if limits are enforced on this contract
   *
   * @return bool : they are / aren't
   */
  function limitsEnforced() public view returns (bool) {
    // Limits are not enforced if
    // this is renounced AND after then protection end date
    // OR prior to LP funding:
    // The second clause of 'fundedDate == 0' isn't strictly needed, since with a funded
    // date of 0 we would always expect the block.timestamp to be less than 0 plus
    // the botProtectionDurationInSeconds. But, to cover the miniscule chance of a user
    // selecting a truly enormous bot protection period, such that when added to 0 it
    // is more than the current block.timestamp, we have included this second clause. There
    // is no permanent gas overhead (the logic will be returning from the first clause after
    // the bot protection period has expired). During the bot protection period there is a minor
    // gas overhead from evaluating the fundedDate == 0 (which will be false), but this is minimal.
    if (
      (owner() == address(0) &&
        block.timestamp > fundedDate + botProtectionDurationInSeconds) ||
      fundedDate == 0
    ) {
      return false;
    } else {
      // LP has been funded AND we are within the protection period:
      return true;
    }
  }

  /**
   * @dev Returns the name of the token.
   */
  function name() public view virtual override returns (string memory) {
    return _name;
  }

  /**
   * @dev Returns the symbol of the token, usually a shorter version of the
   * name.
   */
  function symbol() public view virtual override returns (string memory) {
    return _symbol;
  }

  /**
   * @dev Returns the number of decimals used to get its user representation.
   * For example, if `decimals` equals `2`, a balance of `505` tokens should
   * be displayed to a user as `5.05` (`505 / 10 ** 2`).
   *
   * Tokens usually opt for a value of 18, imitating the relationship between
   * Ether and Wei. This is the default value returned by this function, unless
   * it's overridden.
   *
   * NOTE: This information is only used for _display_ purposes: it in
   * no way affects any of the arithmetic of the contract, including
   * {IERC20-balanceOf} and {IERC20-transfer}.
   */
  function decimals() public view virtual override returns (uint8) {
    return 18;
  }

  /**
   * @dev See {IERC20-totalSupply}.
   */
  function totalSupply() public view virtual override returns (uint256) {
    return _totalSupply;
  }

  /**
   * @dev getMetadropBuyTaxBasisPoints
   *
   * Return the metadrop buy tax basis points given the timed expiry
   */
  function getMetadropBuyTaxBasisPoints() public view returns (uint256) {
    // If we are outside the metadrop tax period this is ZERO
    if (block.timestamp > (fundedDate + (metadropTaxPeriodInDays * 1 days))) {
      return 0;
    } else {
      return metadropBuyTaxBasisPoints;
    }
  }

  /**
   * @dev getMetadropSellTaxBasisPoints
   *
   * Return the metadrop sell tax basis points given the timed expiry
   */
  function getMetadropSellTaxBasisPoints() public view returns (uint256) {
    // If we are outside the metadrop tax period this is ZERO
    if (block.timestamp > (fundedDate + (metadropTaxPeriodInDays * 1 days))) {
      return 0;
    } else {
      return metadropSellTaxBasisPoints;
    }
  }

  /**
   * @dev totalBuyTaxBasisPoints
   *
   * Provide easy to view tax total:
   */
  function totalBuyTaxBasisPoints() public view returns (uint256) {
    return projectBuyTaxBasisPoints + getMetadropBuyTaxBasisPoints();
  }

  /**
   * @dev totalSellTaxBasisPoints
   *
   * Provide easy to view tax total:
   */
  function totalSellTaxBasisPoints() public view returns (uint256) {
    return projectSellTaxBasisPoints + getMetadropSellTaxBasisPoints();
  }

  /**
   * @dev See {IERC20-balanceOf}.
   */
  function balanceOf(
    address account
  ) public view virtual override returns (uint256) {
    return _balances[account];
  }

  /**
   * @dev See {IERC20-transfer}.
   *
   * Requirements:
   *
   * - `to` cannot be the zero address.
   * - the caller must have a balance of at least `amount`.
   */
  function transfer(
    address to,
    uint256 amount
  ) public virtual override(IERC20) returns (bool) {
    address owner = _msgSender();
    _transfer(
      owner,
      to,
      amount,
      (isLiquidityPool(owner) || isLiquidityPool(to))
    );
    return true;
  }

  /**
   * @dev See {IERC20-allowance}.
   */
  function allowance(
    address owner,
    address spender
  ) public view virtual override returns (uint256) {
    return _allowances[owner][spender];
  }

  /**
   * @dev See {IERC20-approve}.
   *
   * NOTE: If `amount` is the maximum `uint256`, the allowance is not updated on
   * `transferFrom`. This is semantically equivalent to an infinite approval.
   *
   * Requirements:
   *
   * - `spender` cannot be the zero address.
   */
  function approve(
    address spender,
    uint256 amount
  ) public virtual override returns (bool) {
    address owner = _msgSender();
    _approve(owner, spender, amount);
    return true;
  }

  /**
   * @dev See {IERC20-transferFrom}.
   *
   * Emits an {Approval} event indicating the updated allowance. This is not
   * required by the EIP. See the note at the beginning of {ERC20}.
   *
   * NOTE: Does not update the allowance if the current allowance
   * is the maximum `uint256`.
   *
   * Requirements:
   *
   * - `from` and `to` cannot be the zero address.
   * - `from` must have a balance of at least `amount`.
   * - the caller must have allowance for ``from``'s tokens of at least
   * `amount`.
   */
  function transferFrom(
    address from,
    address to,
    uint256 amount
  ) public virtual override returns (bool) {
    address spender = _msgSender();
    _spendAllowance(from, spender, amount);
    _transfer(from, to, amount, (isLiquidityPool(from) || isLiquidityPool(to)));
    return true;
  }

  /**
   * @dev Atomically increases the allowance granted to `spender` by the caller.
   *
   * This is an alternative to {approve} that can be used as a mitigation for
   * problems described in {IERC20-approve}.
   *
   * Emits an {Approval} event indicating the updated allowance.
   *
   * Requirements:
   *
   * - `spender` cannot be the zero address.
   */
  function increaseAllowance(
    address spender,
    uint256 addedValue
  ) public virtual returns (bool) {
    address owner = _msgSender();
    _approve(owner, spender, allowance(owner, spender) + addedValue);
    return true;
  }

  /**
   * @dev Atomically decreases the allowance granted to `spender` by the caller.
   *
   * This is an alternative to {approve} that can be used as a mitigation for
   * problems described in {IERC20-approve}.
   *
   * Emits an {Approval} event indicating the updated allowance.
   *
   * Requirements:
   *
   * - `spender` cannot be the zero address.
   * - `spender` must have allowance for the caller of at least
   * `subtractedValue`.
   */
  function decreaseAllowance(
    address spender,
    uint256 subtractedValue
  ) public virtual returns (bool) {
    address owner = _msgSender();
    uint256 currentAllowance = allowance(owner, spender);
    if (currentAllowance < subtractedValue) {
      _revert(AllowanceDecreasedBelowZero.selector);
    }
    unchecked {
      _approve(owner, spender, currentAllowance - subtractedValue);
    }

    return true;
  }

  /**
   * @dev Moves `amount` of tokens from `from` to `to`.
   *
   * This internal function is equivalent to {transfer}, and can be used to
   * e.g. implement automatic token fees, slashing mechanisms, etc.
   *
   * Emits a {Transfer} event.
   *
   * Requirements:
   *
   * - `from` cannot be the zero address.
   * - `to` cannot be the zero address.
   * - `from` must have a balance of at least `amount`.
   */
  function _transfer(
    address from,
    address to,
    uint256 amount,
    bool applyTax
  ) internal virtual {
    _beforeTokenTransfer(from, to, amount);

    // Perform pre-tax validation (e.g. amount doesn't exceed balance, max txn amount)
    uint256 fromBalance = _pretaxValidationAndLimits(from, to, amount);

    // Perform autoswap if eligible
    _autoSwap(from, to);

    // Process taxes
    uint256 amountMinusDeductions = _taxProcessing(applyTax, to, from, amount);

    // Process autoburn
    amountMinusDeductions = _autoburnProcessing(
      from,
      amount,
      amountMinusDeductions
    );

    // Perform post-tax validation (e.g. total balance after post-tax amount applied)
    _posttaxValidationAndLimits(from, to, amountMinusDeductions);

    _balances[from] = fromBalance - amount;
    _balances[to] += amountMinusDeductions;

    emit Transfer(from, to, amountMinusDeductions);

    _afterTokenTransfer(from, to, amount);
  }

  /**
   * @dev function {_pretaxValidationAndLimits}
   *
   * Perform validation on pre-tax amounts
   *
   * @param from_ From address for the transaction
   * @param to_ To address for the transaction
   * @param amount_ Amount of the transaction
   */
  function _pretaxValidationAndLimits(
    address from_,
    address to_,
    uint256 amount_
  ) internal view returns (uint256 fromBalance_) {
    // This can't be a transfer to the liquidity pool before the funding date
    // UNLESS the from address is this contract. This ensures that the initial
    // LP funding transaction is from this contract using the supply of tokens
    // designated for the LP pool, and therefore the initial price in the pool
    // is being set as expected.
    //
    // This protects from, for example, tokens from a team minted supply being
    // paired with ETH and added to the pool, setting the initial price, BEFORE
    // the initial liquidity is added through this contract.
    if (to_ == uniswapV2Pair && from_ != address(this) && fundedDate == 0) {
      _revert(InitialLiquidityNotYetAdded.selector);
    }

    if (from_ == address(0)) {
      _revert(TransferFromZeroAddress.selector);
    }

    if (to_ == address(0)) {
      _revert(TransferToZeroAddress.selector);
    }

    fromBalance_ = _balances[from_];

    if (fromBalance_ < amount_) {
      _revert(TransferAmountExceedsBalance.selector);
    }

    if (
      limitsEnforced() &&
      (maxTokensPerTransaction != 0) &&
      ((isLiquidityPool(from_) && !isUnlimited(to_)) ||
        (isLiquidityPool(to_) && !isUnlimited(from_)))
    ) {
      // Liquidity pools aren't always going to round cleanly. This can (and does)
      // mean that a limit of 5,000 tokens (for example) will trigger on a transfer
      // of 5,000 tokens, as the transfer is actually for 5,000.00000000000000213.
      // While 4,999 will work fine, it isn't hugely user friendly. So we buffer
      // the limit with rounding decimals, which in all cases are considerably less
      // than one whole token:
      uint256 roundedLimited;

      unchecked {
        roundedLimited = maxTokensPerTransaction + CONST_ROUND_DEC;
      }

      if (amount_ > roundedLimited) {
        _revert(MaxTokensPerTxnExceeded.selector);
      }
    }

    return (fromBalance_);
  }

  /**
   * @dev function {_posttaxValidationAndLimits}
   *
   * Perform validation on post-tax amounts
   *
   * @param to_ To address for the transaction
   * @param amount_ Amount of the transaction
   */
  function _posttaxValidationAndLimits(
    address from_,
    address to_,
    uint256 amount_
  ) internal view {
    if (
      limitsEnforced() &&
      (maxTokensPerWallet != 0) &&
      !isUnlimited(to_) &&
      // If this is a buy (from a liquidity pool), we apply if the to_
      // address isn't noted as unlimited:
      (isLiquidityPool(from_) && !isUnlimited(to_))
    ) {
      // Liquidity pools aren't always going to round cleanly. This can (and does)
      // mean that a limit of 5,000 tokens (for example) will trigger on a max holding
      // of 5,000 tokens, as the transfer to achieve that is actually for
      // 5,000.00000000000000213. While 4,999 will work fine, it isn't hugely user friendly.
      // So we buffer the limit with rounding decimals, which in all cases are considerably
      // less than one whole token:
      uint256 roundedLimited;

      unchecked {
        roundedLimited = maxTokensPerWallet + CONST_ROUND_DEC;
      }

      if ((amount_ + balanceOf(to_) > roundedLimited)) {
        _revert(MaxTokensPerWalletExceeded.selector);
      }
    }
  }

  /**
   * @dev function {_taxProcessing}
   *
   * Perform tax processing
   *
   * @param applyTax_ Do we apply tax to this transaction?
   * @param to_ The reciever of the token
   * @param from_ The sender of the token
   * @param sentAmount_ The amount being send
   * @return amountLessTax_ The amount that will be recieved, i.e. the send amount minus tax
   */
  function _taxProcessing(
    bool applyTax_,
    address to_,
    address from_,
    uint256 sentAmount_
  ) internal returns (uint256 amountLessTax_) {
    amountLessTax_ = sentAmount_;
    if (_tokenHasTax && applyTax_ && !_autoSwapInProgress) {
      uint256 tax;

      // on sell
      if (isLiquidityPool(to_) && totalSellTaxBasisPoints() > 0) {
        if (projectSellTaxBasisPoints > 0) {
          uint256 projectTax = ((sentAmount_ * projectSellTaxBasisPoints) /
            CONST_BP_DENOM);
          projectTaxPendingSwap += uint128(projectTax);
          tax += projectTax;
        }
        uint256 metadropSellTax = getMetadropSellTaxBasisPoints();
        if (metadropSellTax > 0) {
          uint256 metadropTax = ((sentAmount_ * metadropSellTax) /
            CONST_BP_DENOM);
          metadropTaxPendingSwap += uint128(metadropTax);
          tax += metadropTax;
        }
      }
      // on buy
      else if (isLiquidityPool(from_) && totalBuyTaxBasisPoints() > 0) {
        if (projectBuyTaxBasisPoints > 0) {
          uint256 projectTax = ((sentAmount_ * projectBuyTaxBasisPoints) /
            CONST_BP_DENOM);
          projectTaxPendingSwap += uint128(projectTax);
          tax += projectTax;
        }
        uint256 metadropBuyTax = getMetadropBuyTaxBasisPoints();
        if (metadropBuyTax > 0) {
          uint256 metadropTax = ((sentAmount_ * metadropBuyTax) /
            CONST_BP_DENOM);
          metadropTaxPendingSwap += uint128(metadropTax);
          tax += metadropTax;
        }
      }

      if (tax > 0) {
        _balances[address(this)] += tax;
        emit Transfer(from_, address(this), tax);
        amountLessTax_ -= tax;
      }
    }
    return (amountLessTax_);
  }

  /**
   * @dev function {_autoburnProcessing}
   *
   * Perform autoburn processing
   *
   * @param from_ The sender of the token
   * @param originalSentAmount_ The original amount being sent, before any deductions (if appropriate)
   * @param currentRecipientAmount_ The amount the recipient is currently due to receive
   * @return amountLessBurn_ The amount that will be recieved, i.e. the currentRecipientAmount_
   * minus the burn applied here
   */
  function _autoburnProcessing(
    address from_,
    uint256 originalSentAmount_,
    uint256 currentRecipientAmount_
  ) internal returns (uint256 amountLessBurn_) {
    amountLessBurn_ = currentRecipientAmount_;
    // Perform autoBurn processing, if appropriate:
    if (
      autoBurnDurationInBlocks != 0 &&
      autoBurnBasisPoints != 0 &&
      !_autoSwapInProgress &&
      isLiquidityPool(from_)
    ) {
      uint256 blocksElapsed = block.number - fundedBlock;
      if (blocksElapsed < autoBurnDurationInBlocks) {
        // Get the blocks remaining in the autoburn period. The more blocks
        // remaining, the higher the proportion of the burn we apply:
        uint256 burnBlocksRemaining = autoBurnDurationInBlocks - blocksElapsed;
        // Calculate the linear burn basis point per remaining block. For example, if our
        // burn basis points = 1500 (15%) and we are burning for three blocks then this
        // will be 1500 / 3 = 500 (5%):
        uint256 linearBurnPerRemainingBlock = autoBurnBasisPoints /
          autoBurnDurationInBlocks;
        // Finally, determine the burn basis points for this block by multiplying the per remaining
        // block burn % by the number of blocks remaining. To follow our example, in the 0th
        // block since funding there are three blocks remaining in the burn period, therefore
        // 500 * 3 = 1500 (15%). Two blocks after funding we have one block remaining in the burn
        // period, and therefore are burning 500 * 1 = 500 (5%). Three blocks after funding we do not
        // reach this point in the logic, as the blocksElapsed is 3 and needs to be UNDER 3 to enter
        // this code.
        uint256 burnBasisPointsForThisBlock = burnBlocksRemaining *
          linearBurnPerRemainingBlock;

        // This is eligible for burn. Send the basis points amount of
        // the originalSentAmount_ to the zero address:
        uint256 burnAmount = ((originalSentAmount_ *
          burnBasisPointsForThisBlock) / CONST_BP_DENOM);

        _burn(from_, burnAmount);
        amountLessBurn_ -= burnAmount;
      }
    }
    return (amountLessBurn_);
  }

  /**
   * @dev totalTaxPendingSwap
   *
   * Return the total tax awaiting swap:
   */
  function totalTaxPendingSwap() public view returns (uint256) {
    return projectTaxPendingSwap + metadropTaxPendingSwap;
  }

  /**
   * @dev function {_autoSwap}
   *
   * Automate the swap of accumulated tax fees to native token
   *
   * @param from_ The sender of the token
   * @param to_ The recipient of the token
   */
  function _autoSwap(address from_, address to_) internal {
    if (_tokenHasTax) {
      uint256 totalTaxBalance = totalTaxPendingSwap();
      uint256 swapBalance = totalTaxBalance;

      uint256 swapThresholdInTokens = (_totalSupply *
        swapThresholdBasisPoints) / CONST_BP_DENOM;

      if (_eligibleForSwap(from_, to_, swapBalance, swapThresholdInTokens)) {
        // Store that a swap back is in progress:
        _autoSwapInProgress = true;
        // Check if we need to reduce the amount of tokens for this swap:
        if (
          swapBalance >
          swapThresholdInTokens * CONST_MAX_SWAP_THRESHOLD_MULTIPLE
        ) {
          swapBalance =
            swapThresholdInTokens *
            CONST_MAX_SWAP_THRESHOLD_MULTIPLE;
        }
        // Perform the auto swap to native token:
        _swapTaxForNative(swapBalance, totalTaxBalance);
        // Flag that the autoswap is complete:
        _autoSwapInProgress = false;
      }
    }
  }

  /**
   * @dev function {_eligibleForSwap}
   *
   * Is the current transfer eligible for autoswap
   *
   * @param from_ The sender of the token
   * @param to_ The recipient of the token
   * @param taxBalance_ The current accumulated tax balance
   * @param swapThresholdInTokens_ The swap threshold as a token amount
   */
  function _eligibleForSwap(
    address from_,
    address to_,
    uint256 taxBalance_,
    uint256 swapThresholdInTokens_
  ) internal view returns (bool) {
    return (taxBalance_ >= swapThresholdInTokens_ &&
      !_autoSwapInProgress &&
      !isLiquidityPool(from_) &&
      from_ != address(_uniswapRouter) &&
      to_ != address(_uniswapRouter));
  }

  /**
   * @dev function {_swapTaxForNative}
   *
   * Swap tokens taken as tax for native token
   *
   * @param swapBalance_ The current accumulated tax balance to swap
   * @param totalTaxBalance_ The current accumulated total tax balance
   */
  function _swapTaxForNative(
    uint256 swapBalance_,
    uint256 totalTaxBalance_
  ) internal {
    uint256 preSwapBalance = address(this).balance;

    address[] memory path = new address[](2);
    path[0] = address(this);
    path[1] = _uniswapRouter.WETH();

    // Wrap external calls in try / catch to handle errors
    try
      _uniswapRouter.swapExactTokensForETHSupportingFeeOnTransferTokens(
        swapBalance_,
        0,
        path,
        address(this),
        block.timestamp + 600
      )
    {
      uint256 postSwapBalance = address(this).balance;

      uint256 balanceToDistribute = postSwapBalance - preSwapBalance;

      uint256 projectBalanceToDistribute = (balanceToDistribute *
        projectTaxPendingSwap) / totalTaxBalance_;

      uint256 metadropBalanceToDistribute = (balanceToDistribute *
        metadropTaxPendingSwap) / totalTaxBalance_;

      // We will not have swapped all tax tokens IF the amount was greater than the max auto swap.
      // We therefore cannot just set the pending swap counters to 0. Instead, in this scenario,
      // we must reduce them in proportion to the swap amount vs the remaining balance + swap
      // amount.
      //
      // For example:
      //  * swap Balance is 250
      //  * contract balance is 385.
      //  * projectTaxPendingSwap is 300
      //  * metadropTaxPendingSwap is 85.
      //
      // The new total for the projectTaxPendingSwap is:
      //   = 300 - ((300 * 250) / 385)
      //   = 300 - 194
      //   = 106
      // The new total for the metadropTaxPendingSwap is:
      //   = 85 - ((85 * 250) / 385)
      //   = 85 - 55
      //   = 30
      //

      if (swapBalance_ < totalTaxBalance_) {
        // Calculate the project tax spending swap reduction amount:
        uint256 projectTaxPendingSwapReduction = (projectTaxPendingSwap *
          swapBalance_) / totalTaxBalance_;
        projectTaxPendingSwap -= uint128(projectTaxPendingSwapReduction);

        // The metadrop tax pending swap reduction is therefore the total swap amount minus the
        // project tax spending swap reduction:
        metadropTaxPendingSwap -= uint128(
          swapBalance_ - projectTaxPendingSwapReduction
        );
      } else {
        (projectTaxPendingSwap, metadropTaxPendingSwap) = (0, 0);
      }

      // Distribute to treasuries:
      bool success;
      address weth;
      uint256 gas;

      if (projectBalanceToDistribute > 0) {
        // If no gas limit was provided or provided gas limit greater than gas left, just use the remaining gas.
        gas = (CONST_CALL_GAS_LIMIT == 0 || CONST_CALL_GAS_LIMIT > gasleft())
          ? gasleft()
          : CONST_CALL_GAS_LIMIT;

        // We limit the gas passed so that a called address cannot cause a block out of gas error:
        (success, ) = projectTaxRecipient.call{
          value: projectBalanceToDistribute,
          gas: gas
        }("");

        // If the ETH transfer fails, wrap the ETH and send it as WETH. We do this so that a called
        // address cannot cause this transfer to fail, either intentionally or by mistake:
        if (!success) {
          if (weth == address(0)) {
            weth = _uniswapRouter.WETH();
          }

          try IWETH(weth).deposit{value: projectBalanceToDistribute}() {
            try
              IERC20(address(weth)).transfer(
                projectTaxRecipient,
                projectBalanceToDistribute
              )
            {} catch {
              // Dont allow a failed external call (in this case to WETH) to stop a transfer.
              // Emit that this has occured and continue.
              emit ExternalCallError(1);
            }
          } catch {
            // Dont allow a failed external call (in this case to WETH) to stop a transfer.
            // Emit that this has occured and continue.
            emit ExternalCallError(2);
          }
        }
      }

      if (metadropBalanceToDistribute > 0) {
        // If no gas limit was provided or provided gas limit greater than gas left, just use the remaining gas.
        gas = (CONST_CALL_GAS_LIMIT == 0 || CONST_CALL_GAS_LIMIT > gasleft())
          ? gasleft()
          : CONST_CALL_GAS_LIMIT;

        (success, ) = metadropTaxRecipient.call{
          value: metadropBalanceToDistribute,
          gas: gas
        }("");

        // If the ETH transfer fails, wrap the ETH and send it as WETH. We do this so that a called
        // address cannot cause this transfer to fail, either intentionally or by mistake:
        if (!success) {
          if (weth == address(0)) {
            weth = _uniswapRouter.WETH();
          }
          try IWETH(weth).deposit{value: metadropBalanceToDistribute}() {
            try
              IERC20(address(weth)).transfer(
                metadropTaxRecipient,
                metadropBalanceToDistribute
              )
            {} catch {
              // Dont allow a failed external call (in this case to WETH) to stop a transfer.
              // Emit that this has occured and continue.
              emit ExternalCallError(3);
            }
          } catch {
            // Dont allow a failed external call (in this case to WETH) to stop a transfer.
            // Emit that this has occured and continue.
            emit ExternalCallError(4);
          }
        }
      }
    } catch {
      // Dont allow a failed external call (in this case to uniswap) to stop a transfer.
      // Emit that this has occured and continue.
      emit ExternalCallError(5);
    }
  }

  /**
   * @dev distributeTaxTokens
   *
   * Allows the distribution of tax tokens to the designated recipient(s)
   *
   * As part of standard processing the tax token balance being above the threshold
   * will trigger an autoswap to ETH and distribution of this ETH to the designated
   * recipients. This is automatic and there is no need for user involvement.
   *
   * As part of this swap there are a number of calculations performed, particularly
   * if the tax balance is above CONST_MAX_SWAP_THRESHOLD_MULTIPLE.
   *
   * Testing indicates that these calculations are safe. But given the data / code
   * interactions it remains possible that some edge case set of scenarios may cause
   * an issue with these calculations.
   *
   * This method is therefore provided as a 'fallback' option to safely distribute
   * accumulated taxes from the contract, with a direct transfer of the ERC20 tokens
   * themselves.
   */
  function distributeTaxTokens() external notDuringAutoswap {
    if (projectTaxPendingSwap > 0) {
      uint256 projectDistribution = projectTaxPendingSwap;
      projectTaxPendingSwap = 0;
      _transfer(address(this), projectTaxRecipient, projectDistribution, false);
    }

    if (metadropTaxPendingSwap > 0) {
      uint256 metadropDistribution = metadropTaxPendingSwap;
      metadropTaxPendingSwap = 0;
      _transfer(
        address(this),
        metadropTaxRecipient,
        metadropDistribution,
        false
      );
    }
  }

  /**
   * @dev function {rescueETH}
   *
   * A withdraw function to allow ETH to be rescued.
   *
   * This contract should never hold ETH. The only envisaged scenario where
   * it might hold ETH is a failed autoswap where the uniswap swap has completed,
   * the recipient of ETH reverts, the contract then wraps to WETH and the
   * wrap to WETH fails.
   *
   * This feels unlikely. But, for safety, we include this method.
   *
   * @param amount_ The amount to withdraw
   */
  function rescueETH(uint256 amount_) external notDuringAutoswap {
    (bool success, ) = projectTaxRecipient.call{value: amount_}("");
    if (!success) {
      _revert(TransferFailed.selector);
    }
  }

  /**
   * @dev function {rescueERC20}
   *
   * A withdraw function to allow ERC20s (except address(this)) to be rescued.
   *
   * This contract should never hold ERC20s other than tax tokens. The only envisaged
   * scenario where it might hold an ERC20 is a failed autoswap where the uniswap swap
   * has completed, the recipient of ETH reverts, the contract then wraps to WETH, the
   * wrap to WETH succeeds, BUT then the transfer of WETH fails.
   *
   * This feels even less likely than the scenario where ETH is held on the contract.
   * But, for safety, we include this method.
   *
   * @param token_ The ERC20 contract
   * @param amount_ The amount to withdraw
   */
  function rescueERC20(
    address token_,
    uint256 amount_
  ) external notDuringAutoswap {
    if (token_ == address(this)) {
      _revert(CannotWithdrawThisToken.selector);
    }
    IERC20(token_).safeTransfer(projectTaxRecipient, amount_);
  }

  /**
   * @dev function {rescueExcessToken}
   *
   * A withdraw function to allow ERC20s from this address that are above
   * the accrued tax balance to be rescued.
   */
  function rescueExcessToken(uint256 amount_) external notDuringAutoswap {
    uint256 excessToken = balanceOf(address(this)) - totalTaxPendingSwap();

    if (amount_ > excessToken) {
      _revert(AmountExceedsAvailable.selector);
    }

    IERC20(address(this)).safeTransfer(projectTaxRecipient, amount_);
  }

  /** @dev Creates `amount` tokens and assigns them to `account`, increasing
   * the total supply.
   *
   * Emits a {Transfer} event with `from` set to the zero address.
   *
   * Requirements:
   *
   * - `account` cannot be the zero address.
   */
  function _mint(address account, uint256 amount) internal virtual {
    if (account == address(0)) {
      _revert(MintToZeroAddress.selector);
    }

    _beforeTokenTransfer(address(0), account, amount);

    _totalSupply += uint120(amount);
    unchecked {
      // Overflow not possible: balance + amount is at most totalSupply + amount, which is checked above.
      _balances[account] += amount;
    }
    emit Transfer(address(0), account, amount);

    _afterTokenTransfer(address(0), account, amount);
  }

  /**
   * @dev Destroys `amount` tokens from `account`, reducing the
   * total supply.
   *
   * Emits a {Transfer} event with `to` set to the zero address.
   *
   * Requirements:
   *
   * - `account` cannot be the zero address.
   * - `account` must have at least `amount` tokens.
   */
  function _burn(address account, uint256 amount) internal virtual {
    if (account == address(0)) {
      _revert(BurnFromTheZeroAddress.selector);
    }

    _beforeTokenTransfer(account, address(0), amount);

    uint256 accountBalance = _balances[account];
    if (accountBalance < amount) {
      _revert(BurnExceedsBalance.selector);
    }

    unchecked {
      _balances[account] = accountBalance - amount;
      // Overflow not possible: amount <= accountBalance <= totalSupply.
      _totalSupply -= uint120(amount);
    }

    emit Transfer(account, address(0), amount);

    _afterTokenTransfer(account, address(0), amount);
  }

  /**
   * @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens.
   *
   * This internal function is equivalent to `approve`, and can be used to
   * e.g. set automatic allowances for certain subsystems, etc.
   *
   * Emits an {Approval} event.
   *
   * Requirements:
   *
   * - `owner` cannot be the zero address.
   * - `spender` cannot be the zero address.
   */
  function _approve(
    address owner,
    address spender,
    uint256 amount
  ) internal virtual {
    if (owner == address(0)) {
      _revert(ApproveFromTheZeroAddress.selector);
    }

    if (spender == address(0)) {
      _revert(ApproveToTheZeroAddress.selector);
    }

    _allowances[owner][spender] = amount;
    emit Approval(owner, spender, amount);
  }

  /**
   * @dev Updates `owner` s allowance for `spender` based on spent `amount`.
   *
   * Does not update the allowance amount in case of infinite allowance.
   * Revert if not enough allowance is available.
   *
   * Might emit an {Approval} event.
   */
  function _spendAllowance(
    address owner,
    address spender,
    uint256 amount
  ) internal virtual {
    uint256 currentAllowance = allowance(owner, spender);
    if (currentAllowance != type(uint256).max) {
      if (currentAllowance < amount) {
        _revert(InsufficientAllowance.selector);
      }

      unchecked {
        _approve(owner, spender, currentAllowance - amount);
      }
    }
  }

  /**
   * @dev Destroys a `value` amount of tokens from the caller.
   *
   * See {ERC20-_burn}.
   */
  function burn(uint256 value) public virtual {
    _burn(_msgSender(), value);
  }

  /**
   * @dev Destroys a `value` amount of tokens from `account`, deducting from
   * the caller's allowance.
   *
   * See {ERC20-_burn} and {ERC20-allowance}.
   *
   * Requirements:
   *
   * - the caller must have allowance for ``accounts``'s tokens of at least
   * `value`.
   */
  function burnFrom(address account, uint256 value) public virtual {
    _spendAllowance(account, _msgSender(), value);
    _burn(account, value);
  }

  /**
   * @dev Hook that is called before any transfer of tokens. This includes
   * minting and burning.
   *
   * Calling conditions:
   *
   * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
   * will be transferred to `to`.
   * - when `from` is zero, `amount` tokens will be minted for `to`.
   * - when `to` is zero, `amount` of ``from``'s tokens will be burned.
   * - `from` and `to` are never both zero.
   *
   * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
   */
  function _beforeTokenTransfer(
    address from,
    address to,
    uint256 amount
  ) internal virtual {}

  /**
   * @dev Hook that is called after any transfer of tokens. This includes
   * minting and burning.
   *
   * Calling conditions:
   *
   * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
   * has been transferred to `to`.
   * - when `from` is zero, `amount` tokens have been minted for `to`.
   * - when `to` is zero, `amount` of ``from``'s tokens have been burned.
   * - `from` and `to` are never both zero.
   *
   * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
   */
  function _afterTokenTransfer(
    address from,
    address to,
    uint256 amount
  ) internal virtual {}

  receive() external payable {}
}

// @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
// @@                                                                                                @@
// @@   Metadrop has no affiliation with and does not endorse this token or its creators in any      @@
// @@   way, unless otherwise stated. For all terms and conditions associated with tokens launched   @@
// @@   using Metadrop software, refer to the terms published at metadrop[dot]com/legal.             @@
// @@                                                                                                @@
// @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@

// Copyright (C) 2015, 2016, 2017 Dapphub

// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.

// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.

// You should have received a copy of the GNU General Public License
// along with this program.  If not, see <http://www.gnu.org/licenses/>.

pragma solidity ^0.4.18;

contract WETH9 {
    string public name     = "Wrapped Ether";
    string public symbol   = "WETH";
    uint8  public decimals = 18;

    event  Approval(address indexed src, address indexed guy, uint wad);
    event  Transfer(address indexed src, address indexed dst, uint wad);
    event  Deposit(address indexed dst, uint wad);
    event  Withdrawal(address indexed src, uint wad);

    mapping (address => uint)                       public  balanceOf;
    mapping (address => mapping (address => uint))  public  allowance;

    function() public payable {
        deposit();
    }
    function deposit() public payable {
        balanceOf[msg.sender] += msg.value;
        Deposit(msg.sender, msg.value);
    }
    function withdraw(uint wad) public {
        require(balanceOf[msg.sender] >= wad);
        balanceOf[msg.sender] -= wad;
        msg.sender.transfer(wad);
        Withdrawal(msg.sender, wad);
    }

    function totalSupply() public view returns (uint) {
        return this.balance;
    }

    function approve(address guy, uint wad) public returns (bool) {
        allowance[msg.sender][guy] = wad;
        Approval(msg.sender, guy, wad);
        return true;
    }

    function transfer(address dst, uint wad) public returns (bool) {
        return transferFrom(msg.sender, dst, wad);
    }

    function transferFrom(address src, address dst, uint wad)
        public
        returns (bool)
    {
        require(balanceOf[src] >= wad);

        if (src != msg.sender && allowance[src][msg.sender] != uint(-1)) {
            require(allowance[src][msg.sender] >= wad);
            allowance[src][msg.sender] -= wad;
        }

        balanceOf[src] -= wad;
        balanceOf[dst] += wad;

        Transfer(src, dst, wad);

        return true;
    }
}


/*
                    GNU GENERAL PUBLIC LICENSE
                       Version 3, 29 June 2007

 Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/>
 Everyone is permitted to copy and distribute verbatim copies
 of this license document, but changing it is not allowed.

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produce it from the Program, in the form of source code under the
terms of section 4, provided that you also meet all of these conditions:

    a) The work must carry prominent notices stating that you modified
    it, and giving a relevant date.

    b) The work must carry prominent notices stating that it is
    released under this License and any conditions added under section
    7.  This requirement modifies the requirement in section 4 to
    "keep intact all notices".

    c) You must license the entire work, as a whole, under this
    License to anyone who comes into possession of a copy.  This
    License will therefore apply, along with any applicable section 7
    additional terms, to the whole of the work, and all its parts,
    regardless of how they are packaged.  This License gives no
    permission to license the work in any other way, but it does not
    invalidate such permission if you have separately received it.

    d) If the work has interactive user interfaces, each must display
    Appropriate Legal Notices; however, if the Program has interactive
    interfaces that do not display Appropriate Legal Notices, your
    work need not make them do so.

  A compilation of a covered work with other separate and independent
works, which are not by their nature extensions of the covered work,
and which are not combined with it such as to form a larger program,
in or on a volume of a storage or distribution medium, is called an
"aggregate" if the compilation and its resulting copyright are not
used to limit the access or legal rights of the compilation's users
beyond what the individual works permit.  Inclusion of a covered work
in an aggregate does not cause this License to apply to the other
parts of the aggregate.

  6. Conveying Non-Source Forms.

  You may convey a covered work in object code form under the terms
of sections 4 and 5, provided that you also convey the
machine-readable Corresponding Source under the terms of this License,
in one of these ways:

    a) Convey the object code in, or embodied in, a physical product
    (including a physical distribution medium), accompanied by the
    Corresponding Source fixed on a durable physical medium
    customarily used for software interchange.

    b) Convey the object code in, or embodied in, a physical product
    (including a physical distribution medium), accompanied by a
    written offer, valid for at least three years and valid for as
    long as you offer spare parts or customer support for that product
    model, to give anyone who possesses the object code either (1) a
    copy of the Corresponding Source for all the software in the
    product that is covered by this License, on a durable physical
    medium customarily used for software interchange, for a price no
    more than your reasonable cost of physically performing this
    conveying of source, or (2) access to copy the
    Corresponding Source from a network server at no charge.

    c) Convey individual copies of the object code with a copy of the
    written offer to provide the Corresponding Source.  This
    alternative is allowed only occasionally and noncommercially, and
    only if you received the object code with such an offer, in accord
    with subsection 6b.

    d) Convey the object code by offering access from a designated
    place (gratis or for a charge), and offer equivalent access to the
    Corresponding Source in the same way through the same place at no
    further charge.  You need not require recipients to copy the
    Corresponding Source along with the object code.  If the place to
    copy the object code is a network server, the Corresponding Source
    may be on a different server (operated by you or a third party)
    that supports equivalent copying facilities, provided you maintain
    clear directions next to the object code saying where to find the
    Corresponding Source.  Regardless of what server hosts the
    Corresponding Source, you remain obligated to ensure that it is
    available for as long as needed to satisfy these requirements.

    e) Convey the object code using peer-to-peer transmission, provided
    you inform other peers where the object code and Corresponding
    Source of the work are being offered to the general public at no
    charge under subsection 6d.

  A separable portion of the object code, whose source code is excluded
from the Corresponding Source as a System Library, need not be
included in conveying the object code work.

  A "User Product" is either (1) a "consumer product", which means any
tangible personal property which is normally used for personal, family,
or household purposes, or (2) anything designed or sold for incorporation
into a dwelling.  In determining whether a product is a consumer product,
doubtful cases shall be resolved in favor of coverage.  For a particular
product received by a particular user, "normally used" refers to a
typical or common use of that class of product, regardless of the status
of the particular user or of the way in which the particular user
actually uses, or expects or is expected to use, the product.  A product
is a consumer product regardless of whether the product has substantial
commercial, industrial or non-consumer uses, unless such uses represent
the only significant mode of use of the product.

  "Installation Information" for a User Product means any methods,
procedures, authorization keys, or other information required to install
and execute modified versions of a covered work in that User Product from
a modified version of its Corresponding Source.  The information must
suffice to ensure that the continued functioning of the modified object
code is in no case prevented or interfered with solely because
modification has been made.

  If you convey an object code work under this section in, or with, or
specifically for use in, a User Product, and the conveying occurs as
part of a transaction in which the right of possession and use of the
User Product is transferred to the recipient in perpetuity or for a
fixed term (regardless of how the transaction is characterized), the
Corresponding Source conveyed under this section must be accompanied
by the Installation Information.  But this requirement does not apply
if neither you nor any third party retains the ability to install
modified object code on the User Product (for example, the work has
been installed in ROM).

  The requirement to provide Installation Information does not include a
requirement to continue to provide support service, warranty, or updates
for a work that has been modified or installed by the recipient, or for
the User Product in which it has been modified or installed.  Access to a
network may be denied when the modification itself materially and
adversely affects the operation of the network or violates the rules and
protocols for communication across the network.

  Corresponding Source conveyed, and Installation Information provided,
in accord with this section must be in a format that is publicly
documented (and with an implementation available to the public in
source code form), and must require no special password or key for
unpacking, reading or copying.

  7. Additional Terms.

  "Additional permissions" are terms that supplement the terms of this
License by making exceptions from one or more of its conditions.
Additional permissions that are applicable to the entire Program shall
be treated as though they were included in this License, to the extent
that they are valid under applicable law.  If additional permissions
apply only to part of the Program, that part may be used separately
under those permissions, but the entire Program remains governed by
this License without regard to the additional permissions.

  When you convey a copy of a covered work, you may at your option
remove any additional permissions from that copy, or from any part of
it.  (Additional permissions may be written to require their own
removal in certain cases when you modify the work.)  You may place
additional permissions on material, added by you to a covered work,
for which you have or can give appropriate copyright permission.

  Notwithstanding any other provision of this License, for material you
add to a covered work, you may (if authorized by the copyright holders of
that material) supplement the terms of this License with terms:

    a) Disclaiming warranty or limiting liability differently from the
    terms of sections 15 and 16 of this License; or

    b) Requiring preservation of specified reasonable legal notices or
    author attributions in that material or in the Appropriate Legal
    Notices displayed by works containing it; or

    c) Prohibiting misrepresentation of the origin of that material, or
    requiring that modified versions of such material be marked in
    reasonable ways as different from the original version; or

    d) Limiting the use for publicity purposes of names of licensors or
    authors of the material; or

    e) Declining to grant rights under trademark law for use of some
    trade names, trademarks, or service marks; or

    f) Requiring indemnification of licensors and authors of that
    material by anyone who conveys the material (or modified versions of
    it) with contractual assumptions of liability to the recipient, for
    any liability that these contractual assumptions directly impose on
    those licensors and authors.

  All other non-permissive additional terms are considered "further
restrictions" within the meaning of section 10.  If the Program as you
received it, or any part of it, contains a notice stating that it is
governed by this License along with a term that is a further
restriction, you may remove that term.  If a license document contains
a further restriction but permits relicensing or conveying under this
License, you may add to a covered work material governed by the terms
of that license document, provided that the further restriction does
not survive such relicensing or conveying.

  If you add terms to a covered work in accord with this section, you
must place, in the relevant source files, a statement of the
additional terms that apply to those files, or a notice indicating
where to find the applicable terms.

  Additional terms, permissive or non-permissive, may be stated in the
form of a separately written license, or stated as exceptions;
the above requirements apply either way.

  8. Termination.

  You may not propagate or modify a covered work except as expressly
provided under this License.  Any attempt otherwise to propagate or
modify it is void, and will automatically terminate your rights under
this License (including any patent licenses granted under the third
paragraph of section 11).

  However, if you cease all violation of this License, then your
license from a particular copyright holder is reinstated (a)
provisionally, unless and until the copyright holder explicitly and
finally terminates your license, and (b) permanently, if the copyright
holder fails to notify you of the violation by some reasonable means
prior to 60 days after the cessation.

  Moreover, your license from a particular copyright holder is
reinstated permanently if the copyright holder notifies you of the
violation by some reasonable means, this is the first time you have
received notice of violation of this License (for any work) from that
copyright holder, and you cure the violation prior to 30 days after
your receipt of the notice.

  Termination of your rights under this section does not terminate the
licenses of parties who have received copies or rights from you under
this License.  If your rights have been terminated and not permanently
reinstated, you do not qualify to receive new licenses for the same
material under section 10.

  9. Acceptance Not Required for Having Copies.

  You are not required to accept this License in order to receive or
run a copy of the Program.  Ancillary propagation of a covered work
occurring solely as a consequence of using peer-to-peer transmission
to receive a copy likewise does not require acceptance.  However,
nothing other than this License grants you permission to propagate or
modify any covered work.  These actions infringe copyright if you do
not accept this License.  Therefore, by modifying or propagating a
covered work, you indicate your acceptance of this License to do so.

  10. Automatic Licensing of Downstream Recipients.

  Each time you convey a covered work, the recipient automatically
receives a license from the original licensors, to run, modify and
propagate that work, subject to this License.  You are not responsible
for enforcing compliance by third parties with this License.

  An "entity transaction" is a transaction transferring control of an
organization, or substantially all assets of one, or subdividing an
organization, or merging organizations.  If propagation of a covered
work results from an entity transaction, each party to that
transaction who receives a copy of the work also receives whatever
licenses to the work the party's predecessor in interest had or could
give under the previous paragraph, plus a right to possession of the
Corresponding Source of the work from the predecessor in interest, if
the predecessor has it or can get it with reasonable efforts.

  You may not impose any further restrictions on the exercise of the
rights granted or affirmed under this License.  For example, you may
not impose a license fee, royalty, or other charge for exercise of
rights granted under this License, and you may not initiate litigation
(including a cross-claim or counterclaim in a lawsuit) alleging that
any patent claim is infringed by making, using, selling, offering for
sale, or importing the Program or any portion of it.

  11. Patents.

  A "contributor" is a copyright holder who authorizes use under this
License of the Program or a work on which the Program is based.  The
work thus licensed is called the contributor's "contributor version".

  A contributor's "essential patent claims" are all patent claims
owned or controlled by the contributor, whether already acquired or
hereafter acquired, that would be infringed by some manner, permitted
by this License, of making, using, or selling its contributor version,
but do not include claims that would be infringed only as a
consequence of further modification of the contributor version.  For
purposes of this definition, "control" includes the right to grant
patent sublicenses in a manner consistent with the requirements of
this License.

  Each contributor grants you a non-exclusive, worldwide, royalty-free
patent license under the contributor's essential patent claims, to
make, use, sell, offer for sale, import and otherwise run, modify and
propagate the contents of its contributor version.

  In the following three paragraphs, a "patent license" is any express
agreement or commitment, however denominated, not to enforce a patent
(such as an express permission to practice a patent or covenant not to
sue for patent infringement).  To "grant" such a patent license to a
party means to make such an agreement or commitment not to enforce a
patent against the party.

  If you convey a covered work, knowingly relying on a patent license,
and the Corresponding Source of the work is not available for anyone
to copy, free of charge and under the terms of this License, through a
publicly available network server or other readily accessible means,
then you must either (1) cause the Corresponding Source to be so
available, or (2) arrange to deprive yourself of the benefit of the
patent license for this particular work, or (3) arrange, in a manner
consistent with the requirements of this License, to extend the patent
license to downstream recipients.  "Knowingly relying" means you have
actual knowledge that, but for the patent license, your conveying the
covered work in a country, or your recipient's use of the covered work
in a country, would infringe one or more identifiable patents in that
country that you have reason to believe are valid.

  If, pursuant to or in connection with a single transaction or
arrangement, you convey, or propagate by procuring conveyance of, a
covered work, and grant a patent license to some of the parties
receiving the covered work authorizing them to use, propagate, modify
or convey a specific copy of the covered work, then the patent license
you grant is automatically extended to all recipients of the covered
work and works based on it.

  A patent license is "discriminatory" if it does not include within
the scope of its coverage, prohibits the exercise of, or is
conditioned on the non-exercise of one or more of the rights that are
specifically granted under this License.  You may not convey a covered
work if you are a party to an arrangement with a third party that is
in the business of distributing software, under which you make payment
to the third party based on the extent of your activity of conveying
the work, and under which the third party grants, to any of the
parties who would receive the covered work from you, a discriminatory
patent license (a) in connection with copies of the covered work
conveyed by you (or copies made from those copies), or (b) primarily
for and in connection with specific products or compilations that
contain the covered work, unless you entered into that arrangement,
or that patent license was granted, prior to 28 March 2007.

  Nothing in this License shall be construed as excluding or limiting
any implied license or other defenses to infringement that may
otherwise be available to you under applicable patent law.

  12. No Surrender of Others' Freedom.

  If conditions are imposed on you (whether by court order, agreement or
otherwise) that contradict the conditions of this License, they do not
excuse you from the conditions of this License.  If you cannot convey a
covered work so as to satisfy simultaneously your obligations under this
License and any other pertinent obligations, then as a consequence you may
not convey it at all.  For example, if you agree to terms that obligate you
to collect a royalty for further conveying from those to whom you convey
the Program, the only way you could satisfy both those terms and this
License would be to refrain entirely from conveying the Program.

  13. Use with the GNU Affero General Public License.

  Notwithstanding any other provision of this License, you have
permission to link or combine any covered work with a work licensed
under version 3 of the GNU Affero General Public License into a single
combined work, and to convey the resulting work.  The terms of this
License will continue to apply to the part which is the covered work,
but the special requirements of the GNU Affero General Public License,
section 13, concerning interaction through a network will apply to the
combination as such.

  14. Revised Versions of this License.

  The Free Software Foundation may publish revised and/or new versions of
the GNU General Public License from time to time.  Such new versions will
be similar in spirit to the present version, but may differ in detail to
address new problems or concerns.

  Each version is given a distinguishing version number.  If the
Program specifies that a certain numbered version of the GNU General
Public License "or any later version" applies to it, you have the
option of following the terms and conditions either of that numbered
version or of any later version published by the Free Software
Foundation.  If the Program does not specify a version number of the
GNU General Public License, you may choose any version ever published
by the Free Software Foundation.

  If the Program specifies that a proxy can decide which future
versions of the GNU General Public License can be used, that proxy's
public statement of acceptance of a version permanently authorizes you
to choose that version for the Program.

  Later license versions may give you additional or different
permissions.  However, no additional obligations are imposed on any
author or copyright holder as a result of your choosing to follow a
later version.

  15. Disclaimer of Warranty.

  THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
APPLICABLE LAW.  EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
PURPOSE.  THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM
IS WITH YOU.  SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
ALL NECESSARY SERVICING, REPAIR OR CORRECTION.

  16. Limitation of Liability.

  IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
SUCH DAMAGES.

  17. Interpretation of Sections 15 and 16.

  If the disclaimer of warranty and limitation of liability provided
above cannot be given local legal effect according to their terms,
reviewing courts shall apply local law that most closely approximates
an absolute waiver of all civil liability in connection with the
Program, unless a warranty or assumption of liability accompanies a
copy of the Program in return for a fee.

                     END OF TERMS AND CONDITIONS

            How to Apply These Terms to Your New Programs

  If you develop a new program, and you want it to be of the greatest
possible use to the public, the best way to achieve this is to make it
free software which everyone can redistribute and change under these terms.

  To do so, attach the following notices to the program.  It is safest
to attach them to the start of each source file to most effectively
state the exclusion of warranty; and each file should have at least
the "copyright" line and a pointer to where the full notice is found.

    <one line to give the program's name and a brief idea of what it does.>
    Copyright (C) <year>  <name of author>

    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program.  If not, see <http://www.gnu.org/licenses/>.

Also add information on how to contact you by electronic and paper mail.

  If the program does terminal interaction, make it output a short
notice like this when it starts in an interactive mode:

    <program>  Copyright (C) <year>  <name of author>
    This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
    This is free software, and you are welcome to redistribute it
    under certain conditions; type `show c' for details.

The hypothetical commands `show w' and `show c' should show the appropriate
parts of the General Public License.  Of course, your program's commands
might be different; for a GUI interface, you would use an "about box".

  You should also get your employer (if you work as a programmer) or school,
if any, to sign a "copyright disclaimer" for the program, if necessary.
For more information on this, and how to apply and follow the GNU GPL, see
<http://www.gnu.org/licenses/>.

  The GNU General Public License does not permit incorporating your program
into proprietary programs.  If your program is a subroutine library, you
may consider it more useful to permit linking proprietary applications with
the library.  If this is what you want to do, use the GNU Lesser General
Public License instead of this License.  But first, please read
<http://www.gnu.org/philosophy/why-not-lgpl.html>.

*/