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// SPDX-License-Identifier: GPL-3.0-or-later
pragma solidity =0.8.15;

import "./interfaces/INomiswapStablePair.sol";
import "./interfaces/INomiswapCallee.sol";
import "./interfaces/INomiswapFactory.sol";
import "./NomiswapStableERC20.sol";
import "./libraries/MathUtils.sol";
import "./libraries/UQ112x112.sol";
import "./util/FactoryGuard.sol";
import "@openzeppelin/contracts/token/ERC20/extensions/IERC20Metadata.sol";
import "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol";
import "@openzeppelin/contracts/security/ReentrancyGuard.sol";

contract NomiswapStablePair is INomiswapStablePair, NomiswapStableERC20, ReentrancyGuard, FactoryGuard {
    using MathUtils for uint256;

    uint256 public constant MINIMUM_LIQUIDITY = 10**3;

    uint256 public constant MAX_FEE = 2**32 - 1; // @dev 100% (max of uint32).
    uint256 private constant A_PRECISION = 100;

    uint256 private constant MAX_A = 10 ** 6;
    uint256 private constant MAX_A_CHANGE = 100;
    uint256 private constant MIN_RAMP_TIME = 86400;

    uint256 private constant Q112 = 2**112;
    uint256 private constant MAX_LOOP_LIMIT = 256;

    address public immutable token0;
    address public immutable 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

    uint128 public adminFee = 1;
    uint128 public devFee = uint128(Q112*(10-7)/uint(7)); // 70% (1/0.7-1)

    uint128 public immutable token0PrecisionMultiplier; // uses single storage slot
    uint128 public immutable token1PrecisionMultiplier; // uses single storage slot

    uint32 initialA = uint32(85 * A_PRECISION); // uses single storage slot
    uint32 futureA = initialA; // uses single storage slot
    uint40 initialATime; // uses single storage slot
    uint40 futureATime; // uses single storage slot
    uint32 public swapFee = 4294968; // 0.1% default

    constructor(address _token0, address _token1) FactoryGuard(msg.sender) {
        futureATime = uint40(block.timestamp);
        token0 = _token0;
        token1 = _token1;
        uint8 decimals0 = IERC20Metadata(_token0).decimals();
        require(decimals0 <= 18, 'NomiswapStablePair: unsupported token');
        token0PrecisionMultiplier = uint128(10)**(18 - decimals0);
        uint8 decimals1 = IERC20Metadata(_token1).decimals();
        require(decimals1 <= 18, 'NomiswapStablePair: unsupported token');
        token1PrecisionMultiplier = uint128(10)**(18 - decimals1);
    }

    function symbol() external view returns (string memory) {
        return string.concat(
            symbolPrefix,
            "-",
            IERC20Metadata(token0).symbol(),
            "-",
            IERC20Metadata(token1).symbol()
        );
    }

    function setSwapFee(uint32 _swapFee) override external onlyFactory {
        require(_swapFee <= MAX_FEE, 'NomiswapStablePair: FORBIDDEN_FEE');
        swapFee = _swapFee;
    }

    function setDevFee(uint128 _devFee) override external onlyFactory {
        require(_devFee != 0, "NomiswapStablePair: dev fee 0");
        devFee = _devFee;
    }

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

        _mintFee();
        uint _totalSupply = totalSupply; // gas savings, must be defined here since totalSupply can update in _mintFee
        uint amount0 = balance0 - _reserve0;
        uint amount1 = balance1 - _reserve1;

        if (_totalSupply == 0) {
            uint A = getA();
            uint dBalance = _computeLiquidity(balance0, balance1, A);
            liquidity = dBalance - MINIMUM_LIQUIDITY;
            _mint(address(0), MINIMUM_LIQUIDITY); // permanently lock the first MINIMUM_LIQUIDITY tokens
        } else {
            liquidity = MathUtils.min(amount0 * _totalSupply / _reserve0, amount1 * _totalSupply / _reserve1);
        }

        require(liquidity > 0, 'Nomiswap: INSUFFICIENT_LIQUIDITY_MINTED');
        _mint(to, liquidity);

        _update(balance0, balance1);
        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) override external nonReentrant returns (uint amount0, uint amount1) {
        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)];

        _mintFee();
        uint _totalSupply = totalSupply; // gas savings, must be defined here since totalSupply can update in _mintFee
        amount0 = liquidity * balance0 / _totalSupply; // using balances ensures pro-rata distribution
        amount1 = liquidity * balance1 / _totalSupply; // using balances ensures pro-rata distribution
        require(amount0 > 0 && amount1 > 0, 'Nomiswap: INSUFFICIENT_LIQUIDITY_BURNED');
        _burn(address(this), liquidity);
        SafeERC20.safeTransfer(IERC20(_token0), to, amount0);
        SafeERC20.safeTransfer(IERC20(_token1), to, amount1);
        balance0 = IERC20(_token0).balanceOf(address(this));
        balance1 = IERC20(_token1).balanceOf(address(this));

        _update(balance0, balance1);
        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) override external nonReentrant {
        require(amount0Out > 0 || amount1Out > 0, 'Nomiswap: INSUFFICIENT_OUTPUT_AMOUNT');
        (uint _reserve0, uint _reserve1,) = getReserves(); // gas savings
        require(amount0Out < _reserve0 && amount1Out < _reserve1, 'Nomiswap: 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, 'Nomiswap: INVALID_TO');
            if (amount0Out > 0) SafeERC20.safeTransfer(IERC20(_token0), to, amount0Out); // optimistically transfer tokens
            if (amount1Out > 0) SafeERC20.safeTransfer(IERC20(_token1), to, amount1Out); // optimistically transfer tokens
            if (data.length > 0) INomiswapCallee(to).nomiswapCall(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, 'Nomiswap: INSUFFICIENT_INPUT_AMOUNT');
        { // scope for reserve{0,1}Adjusted, avoids stack too deep errors

            uint256 A = getA();
            uint _swapFee = swapFee;
            uint _token0PrecisionMultiplier = token0PrecisionMultiplier;
            uint _token1PrecisionMultiplier = token1PrecisionMultiplier;
            uint balance0Adjusted = (balance0 * MAX_FEE - amount0In * _swapFee) * _token0PrecisionMultiplier / MAX_FEE;
            uint balance1Adjusted = (balance1 * MAX_FEE - amount1In * _swapFee) * _token1PrecisionMultiplier / MAX_FEE;
            uint256 dBalance = _computeLiquidityFromAdjustedBalances(balance0Adjusted, balance1Adjusted, A);

            uint256 adjustedReserve0 = _reserve0 * _token0PrecisionMultiplier;
            uint256 adjustedReserve1 = _reserve1 * _token1PrecisionMultiplier;
            uint256 dReserves = _computeLiquidityFromAdjustedBalances(adjustedReserve0, adjustedReserve1, A);

            require(dBalance >= dReserves, 'Nomiswap: D');

            uint256 dTotal = _computeLiquidity(balance0, balance1, A);
            uint numerator = totalSupply * (dTotal - dReserves);
            uint denominator = (dTotal * devFee/Q112) + dReserves;
            adminFee += uint128(numerator / denominator);
        }

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

    // force balances to match reserves
    function skim(address to) override external nonReentrant {
        address _token0 = token0; // gas savings
        address _token1 = token1; // gas savings
        SafeERC20.safeTransfer(IERC20(_token0), to, IERC20(_token0).balanceOf(address(this)) - reserve0);
        SafeERC20.safeTransfer(IERC20(_token1), to, IERC20(_token1).balanceOf(address(this)) - reserve1);
    }

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

    function rampA(uint32 _futureA, uint40 _futureTime) override external nonReentrant onlyFactory {
        require(block.timestamp >= initialATime + MIN_RAMP_TIME, 'NomiswapStablePair: INVALID_TIME');
        require(_futureTime >= block.timestamp + MIN_RAMP_TIME, 'NomiswapStablePair: INVALID_FUTURE_TIME');

        uint32 _initialA = uint32(getA());

        require(_futureA > 0 && _futureA < MAX_A * A_PRECISION);

        if (_futureA < _initialA) {
            require(_futureA * MAX_A_CHANGE >= _initialA);
        } else {
            require(_futureA <= _initialA * MAX_A_CHANGE);
        }

        initialA = _initialA;
        futureA = _futureA;
        initialATime = uint40(block.timestamp);
        futureATime = _futureTime;

        emit RampA(_initialA, _futureA, block.timestamp, _futureTime);
    }

    function stopRampA() override external nonReentrant onlyFactory {
        uint32 currentA = uint32(getA());

        initialA = currentA;
        futureA = currentA;
        initialATime = uint40(block.timestamp);
        futureATime = uint40(block.timestamp);

        emit StopRampA(currentA, block.timestamp);
    }

    function getAmountIn(address tokenIn, uint256 amountOut) external view override returns (uint256 finalAmountIn) {
        (uint256 _reserve0, uint256 _reserve1, ) = getReserves();

        uint256 _token0PrecisionMultiplier = token0PrecisionMultiplier;
        uint256 _token1PrecisionMultiplier = token1PrecisionMultiplier;
        uint256 adjustedReserve0 = _reserve0 * _token0PrecisionMultiplier;
        uint256 adjustedReserve1 = _reserve1 * _token1PrecisionMultiplier;
        uint256 A = getA();
        uint256 d = _computeLiquidityFromAdjustedBalances(adjustedReserve0, adjustedReserve1, A);

        if (tokenIn == token0) {
            uint256 x = adjustedReserve1 - amountOut * _token1PrecisionMultiplier;
            uint256 y = _getY(x, d, A);
            uint256 dy = (y - adjustedReserve0).divRoundUp(_token0PrecisionMultiplier);
            finalAmountIn = (dy * MAX_FEE).divRoundUp(MAX_FEE - swapFee);
        } else {
            require(tokenIn == token1, "INVALID_INPUT_TOKEN");
            uint256 x = adjustedReserve0 - amountOut * _token0PrecisionMultiplier;
            uint256 y = _getY(x, d, A);
            uint256 dy = (y - adjustedReserve1).divRoundUp(_token1PrecisionMultiplier);
            finalAmountIn = (dy * MAX_FEE).divRoundUp(MAX_FEE - swapFee);
        }
    }

    function getAmountOut(address tokenIn, uint256 amountIn) external view override returns (uint256 finalAmountOut) {
        (uint256 _reserve0, uint256 _reserve1, ) = getReserves();

        uint256 _token0PrecisionMultiplier = token0PrecisionMultiplier;
        uint256 _token1PrecisionMultiplier = token1PrecisionMultiplier;
        uint256 feeDeductedAmountIn = (amountIn * MAX_FEE - amountIn * swapFee) / MAX_FEE;
        uint256 adjustedReserve0 = _reserve0 * _token0PrecisionMultiplier;
        uint256 adjustedReserve1 = _reserve1 * _token1PrecisionMultiplier;
        uint256 A = getA();
        uint256 d = _computeLiquidityFromAdjustedBalances(adjustedReserve0, adjustedReserve1, A);

        if (tokenIn == token0) {
            uint256 x = adjustedReserve0 + feeDeductedAmountIn * _token0PrecisionMultiplier;
            uint256 y = _getY(x, d, A);
            finalAmountOut = (adjustedReserve1 - y) / _token1PrecisionMultiplier;
        } else {
            require(tokenIn == token1, "INVALID_INPUT_TOKEN");
            uint256 x = adjustedReserve1 + feeDeductedAmountIn * _token1PrecisionMultiplier;
            uint256 y = _getY(x, d, A);
            finalAmountOut = (adjustedReserve0 - y) / _token0PrecisionMultiplier;
        }
    }

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

    function factory() override public view returns (address) {
        return _factory;
    }

    function getA() override public view returns (uint256) {
        uint256 t1  = futureATime;
        uint256 A1  = futureA;

        if (block.timestamp < t1) {
            uint256 A0 = initialA;
            uint256 t0 = initialATime;
            // Expressions in uint32 cannot have negative numbers, thus "if"
            if (A1 > A0) {
                return A0 + (block.timestamp - t0) * (A1 - A0) / (t1 - t0);
            } else {
                return A0 - (block.timestamp - t0) * (A0 - A1) / (t1 - t0);
            }
        } else {
            // when t1 == 0 or block.timestamp >= t1
            return A1;
        }
    }

    function _computeLiquidity(uint256 _reserve0, uint256 _reserve1, uint256 A) private view returns (uint256 liquidity) {
        uint256 adjustedReserve0 = _reserve0 * token0PrecisionMultiplier;
        uint256 adjustedReserve1 = _reserve1 * token1PrecisionMultiplier;
        liquidity = _computeLiquidityFromAdjustedBalances(adjustedReserve0, adjustedReserve1, A);
    }

    function _update(uint balance0, uint balance1) private {
        require(balance0 <= type(uint112).max && balance1 <= type(uint112).max, 'Nomiswap: OVERFLOW');
        uint32 blockTimestamp = uint32(block.timestamp % 2**32);
        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() private {
        address feeTo = INomiswapFactory(factory()).feeTo();
        bool feeOn = feeTo != address(0);
        uint _adminFee = adminFee; // gas savings
        if (feeOn) {
            if (_adminFee > 1) {
                _mint(feeTo, _adminFee - 1);
                adminFee = 1;
            }
        } else if (_adminFee > 1) {
            adminFee = 1;
        }
    }

    function _computeLiquidityFromAdjustedBalances(uint256 xp0, uint256 xp1, uint256 A) private pure returns (uint256 d) {
        uint256 x = xp0 < xp1 ? xp0 : xp1;
        uint256 y = xp0 < xp1 ? xp1 : xp0;
        uint256 s = x + y;
        if (s == 0) {
            return 0;
        }

        uint256 N_A = 16 * A;
        uint256 numeratorP = N_A * s * y;
        uint256 denominatorP = (N_A - 4 * A_PRECISION) * y;

        uint256 prevD;
        d = s;
        for (uint256 i = 0; i < MAX_LOOP_LIMIT; i++) {
            prevD = d;
            uint256 N_D = A_PRECISION * d * d / x;
            d = (2 * d * N_D + numeratorP) / (3 * N_D + denominatorP);
            if (d.within1(prevD)) {
                break;
            }
        }
    }

    function _getY(uint256 x, uint256 d, uint256 A) private pure returns (uint256 y) {
        uint256 yPrev;
        y = d;
        uint256 N_A = A * 4;
        uint256 numeratorP = A_PRECISION * d * d / x * d / 4;
        unchecked {
            uint256 denominatorP = N_A * (x - d) + d * A_PRECISION; // underflow is possible and desired

            // @dev Iterative approximation.
            for (uint256 i = 0; i < MAX_LOOP_LIMIT; i++) {
                yPrev = y;
                uint256 N_Y = N_A * y;
                y = (N_Y * y + numeratorP).divRoundUp((2 * N_Y + denominatorP));
                if (y.within1(yPrev)) {
                    break;
                }
            }
        }
    }

}

// SPDX-License-Identifier: GPL-3.0-or-later
pragma solidity =0.8.15;

contract FactoryGuard {

    address immutable internal _factory;
    modifier onlyFactory() {
        require(msg.sender == _factory, 'Nomiswap: FORBIDDEN');
        _;
    }

    constructor(address factory) {
        _factory = factory;
    }

}

// SPDX-License-Identifier: GPL-3.0-or-later
pragma solidity =0.8.15;

// 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);
    }
}

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

pragma solidity =0.8.15;

/// @notice A library that contains functions for calculating differences between two uint256.
/// @author Adapted from https://github.com/saddle-finance/saddle-contract/blob/master/contracts/MathUtils.sol.
library MathUtils {
    /// @notice Compares a and b and returns 'true' if the difference between a and b
    /// is less than 1 or equal to each other.
    /// @param a uint256 to compare with.
    /// @param b uint256 to compare with.
    function within1(uint256 a, uint256 b) internal pure returns (bool) {
        unchecked {
            if (a > b) {
                return a - b <= 1;
            }
            return b - a <= 1;
        }
    }

    function divRoundUp(uint numerator, uint denumerator) internal pure returns (uint) {
        return (numerator + denumerator - 1) / denumerator;
    }

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

}

// SPDX-License-Identifier: GPL-3.0-or-later
pragma solidity ^0.8.0;

import "./INomiswapPair.sol";
pragma experimental ABIEncoderV2;

interface INomiswapStablePair is INomiswapPair {

    event RampA(uint256 oldA, uint256 newA, uint256 initialTime, uint256 futureTime);
    event StopRampA(uint256 A, uint256 t);

    function devFee() external view returns (uint128);

//    function burnSingle(address tokenOut, address recipient) external returns (uint256 amountOut);

    function getA() external view returns (uint256);

    function setSwapFee(uint32) external;
    function setDevFee(uint128) external;

    function rampA(uint32 _futureA, uint40 _futureTime) external;
    function stopRampA() external;

    function getAmountIn(address tokenIn, uint256 amountOut) external view returns (uint256);
    function getAmountOut(address tokenIn, uint256 amountIn) external view returns (uint256);

}

// SPDX-License-Identifier: GPL-3.0-or-later
pragma solidity ^0.8.0;

import "./INomiswapERC20.sol";

interface INomiswapPair is INomiswapERC20 {

    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 swapFee() external view returns (uint32);

    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;

}

// SPDX-License-Identifier: GPL-3.0-or-later
pragma solidity >=0.5.0;

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

    function feeTo() external view returns (address);
    function feeToSetter() external view returns (address);
    function INIT_CODE_HASH() external view returns (bytes32);

    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;
    function setSwapFee(address pair, uint32 swapFee) external;
}

// SPDX-License-Identifier: GPL-3.0-or-later
pragma solidity ^0.8.0;

import "@openzeppelin/contracts/token/ERC20/extensions/IERC20Metadata.sol";

interface INomiswapERC20 is IERC20Metadata {
    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;
}

// SPDX-License-Identifier: GPL-3.0-or-later
pragma solidity >=0.5.0;

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

// SPDX-License-Identifier: GPL-3.0-or-later
pragma solidity =0.8.15;

import "./interfaces/INomiswapERC20.sol";

abstract contract NomiswapStableERC20 is INomiswapERC20 {

    uint256 constant MAX_UINT = type(uint256).max; // 0xffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff

    string public constant name = 'Nomiswap stable LPs';
    string internal constant symbolPrefix = 'NMX-SLP';
    uint8 public constant decimals = 18;
    uint  public totalSupply;
    mapping(address => uint) public balanceOf;
    mapping(address => mapping(address => uint)) public allowance;

    bytes32 public immutable 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;

    constructor() {
        uint chainId = block.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 + value;
        balanceOf[to] = balanceOf[to] + value;
        emit Transfer(address(0), to, value);
    }

    function _burn(address from, uint value) internal {
        balanceOf[from] = balanceOf[from] - value;
        totalSupply = totalSupply - 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] - value;
        balanceOf[to] = balanceOf[to] + value;
        emit Transfer(from, to, value);
    }

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

    function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
        _approve(msg.sender, spender, allowance[msg.sender][spender] + addedValue);
        return true;
    }

    function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {
        uint256 currentAllowance = allowance[msg.sender][spender];
        require(currentAllowance >= subtractedValue, "NomiswapStableERC20: decreased allowance below zero");
        _approve(msg.sender, spender, currentAllowance - subtractedValue);
        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] != MAX_UINT) {
            allowance[from][msg.sender] = allowance[from][msg.sender] - 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, 'Nomiswap: 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, 'Nomiswap: INVALID_SIGNATURE');
        _approve(owner, spender, value);
    }

}

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

pragma solidity ^0.8.1;

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

        return account.code.length > 0;
    }

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

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

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

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

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

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

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

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

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

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
     * but performing a delegate call.
     *
     * _Available since v3.4._
     */
    function functionDelegateCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal returns (bytes memory) {
        (bool success, bytes memory returndata) = target.delegatecall(data);
        return verifyCallResultFromTarget(target, success, returndata, errorMessage);
    }

    /**
     * @dev Tool to verify that a low level call to smart-contract was successful, and revert (either by bubbling
     * the revert reason or using the provided one) in case of unsuccessful call or if target was not a contract.
     *
     * _Available since v4.8._
     */
    function verifyCallResultFromTarget(
        address target,
        bool success,
        bytes memory returndata,
        string memory errorMessage
    ) internal view returns (bytes memory) {
        if (success) {
            if (returndata.length == 0) {
                // only check isContract if the call was successful and the return data is empty
                // otherwise we already know that it was a contract
                require(isContract(target), "Address: call to non-contract");
            }
            return returndata;
        } else {
            _revert(returndata, errorMessage);
        }
    }

    /**
     * @dev Tool to verify that a low level call was successful, and revert if it wasn't, either by bubbling the
     * revert reason or using the provided one.
     *
     * _Available since v4.3._
     */
    function verifyCallResult(
        bool success,
        bytes memory returndata,
        string memory errorMessage
    ) internal pure returns (bytes memory) {
        if (success) {
            return returndata;
        } else {
            _revert(returndata, errorMessage);
        }
    }

    function _revert(bytes memory returndata, string memory errorMessage) private pure {
        // Look for revert reason and bubble it up if present
        if (returndata.length > 0) {
            // The easiest way to bubble the revert reason is using memory via assembly
            /// @solidity memory-safe-assembly
            assembly {
                let returndata_size := mload(returndata)
                revert(add(32, returndata), returndata_size)
            }
        } else {
            revert(errorMessage);
        }
    }
}

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

pragma solidity ^0.8.0;

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

/**
 * @title SafeERC20
 * @dev Wrappers around ERC20 operations that throw on failure (when the token
 * contract returns false). Tokens that return no value (and instead revert or
 * throw on failure) are also supported, non-reverting calls are assumed to be
 * successful.
 * To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract,
 * which allows you to call the safe operations as `token.safeTransfer(...)`, etc.
 */
library SafeERC20 {
    using Address for address;

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

    function safeTransferFrom(
        IERC20 token,
        address from,
        address to,
        uint256 value
    ) internal {
        _callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value));
    }

    /**
     * @dev Deprecated. This function has issues similar to the ones found in
     * {IERC20-approve}, and its usage is discouraged.
     *
     * Whenever possible, use {safeIncreaseAllowance} and
     * {safeDecreaseAllowance} instead.
     */
    function safeApprove(
        IERC20 token,
        address spender,
        uint256 value
    ) internal {
        // safeApprove should only be called when setting an initial allowance,
        // or when resetting it to zero. To increase and decrease it, use
        // 'safeIncreaseAllowance' and 'safeDecreaseAllowance'
        require(
            (value == 0) || (token.allowance(address(this), spender) == 0),
            "SafeERC20: approve from non-zero to non-zero allowance"
        );
        _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value));
    }

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

    function safeDecreaseAllowance(
        IERC20 token,
        address spender,
        uint256 value
    ) internal {
        unchecked {
            uint256 oldAllowance = token.allowance(address(this), spender);
            require(oldAllowance >= value, "SafeERC20: decreased allowance below zero");
            uint256 newAllowance = oldAllowance - value;
            _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
        }
    }

    function safePermit(
        IERC20Permit token,
        address owner,
        address spender,
        uint256 value,
        uint256 deadline,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) internal {
        uint256 nonceBefore = token.nonces(owner);
        token.permit(owner, spender, value, deadline, v, r, s);
        uint256 nonceAfter = token.nonces(owner);
        require(nonceAfter == nonceBefore + 1, "SafeERC20: permit did not succeed");
    }

    /**
     * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement
     * on the return value: the return value is optional (but if data is returned, it must not be false).
     * @param token The token targeted by the call.
     * @param data The call data (encoded using abi.encode or one of its variants).
     */
    function _callOptionalReturn(IERC20 token, bytes memory data) private {
        // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since
        // we're implementing it ourselves. We use {Address-functionCall} to perform this call, which verifies that
        // the target address contains contract code and also asserts for success in the low-level call.

        bytes memory returndata = address(token).functionCall(data, "SafeERC20: low-level call failed");
        if (returndata.length > 0) {
            // Return data is optional
            require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed");
        }
    }
}

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

pragma solidity ^0.8.0;

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

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

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

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC20/extensions/IERC20Metadata.sol)

pragma solidity ^0.8.0;

import "../IERC20.sol";

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

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

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

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

pragma solidity ^0.8.0;

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

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

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

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

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

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

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

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

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

pragma solidity ^0.8.0;

/**
 * @dev Contract module that helps prevent reentrant calls to a function.
 *
 * Inheriting from `ReentrancyGuard` will make the {nonReentrant} modifier
 * available, which can be applied to functions to make sure there are no nested
 * (reentrant) calls to them.
 *
 * Note that because there is a single `nonReentrant` guard, functions marked as
 * `nonReentrant` may not call one another. This can be worked around by making
 * those functions `private`, and then adding `external` `nonReentrant` entry
 * points to them.
 *
 * TIP: If you would like to learn more about reentrancy and alternative ways
 * to protect against it, check out our blog post
 * https://blog.openzeppelin.com/reentrancy-after-istanbul/[Reentrancy After Istanbul].
 */
abstract contract ReentrancyGuard {
    // Booleans are more expensive than uint256 or any type that takes up a full
    // word because each write operation emits an extra SLOAD to first read the
    // slot's contents, replace the bits taken up by the boolean, and then write
    // back. This is the compiler's defense against contract upgrades and
    // pointer aliasing, and it cannot be disabled.

    // The values being non-zero value makes deployment a bit more expensive,
    // but in exchange the refund on every call to nonReentrant will be lower in
    // amount. Since refunds are capped to a percentage of the total
    // transaction's gas, it is best to keep them low in cases like this one, to
    // increase the likelihood of the full refund coming into effect.
    uint256 private constant _NOT_ENTERED = 1;
    uint256 private constant _ENTERED = 2;

    uint256 private _status;

    constructor() {
        _status = _NOT_ENTERED;
    }

    /**
     * @dev Prevents a contract from calling itself, directly or indirectly.
     * Calling a `nonReentrant` function from another `nonReentrant`
     * function is not supported. It is possible to prevent this from happening
     * by making the `nonReentrant` function external, and making it call a
     * `private` function that does the actual work.
     */
    modifier nonReentrant() {
        _nonReentrantBefore();
        _;
        _nonReentrantAfter();
    }

    function _nonReentrantBefore() private {
        // On the first call to nonReentrant, _status will be _NOT_ENTERED
        require(_status != _ENTERED, "ReentrancyGuard: reentrant call");

        // Any calls to nonReentrant after this point will fail
        _status = _ENTERED;
    }

    function _nonReentrantAfter() private {
        // By storing the original value once again, a refund is triggered (see
        // https://eips.ethereum.org/EIPS/eip-2200)
        _status = _NOT_ENTERED;
    }
}

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

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actory","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"getA","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"tokenIn","type":"address"},{"internalType":"uint256","name":"amountOut","type":"uint256"}],"name":"getAmountIn","outputs":[{"internalType":"uint256","name":"finalAmountIn","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"tokenIn","type":"address"},{"internalType":"uint256","name":"amountIn","type":"uint256"}],"name":"getAmountOut","outputs":[{"internalType":"uint256","name":"finalAmountOut","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"getReserves","outputs":[{"internalType":"uint112","name":"_reserve0","type":"uint112"},{"internalType":"uint112","name":"_reserve1","type":"uint112"},{"internalType":"uint32","name":"_blockTimestampLast","type":"uint32"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"spender","type":"address"},{"internalType":"uint256","name":"addedValue","type":"uint256"}],"name":"increaseAllowance","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"to","type":"address"}],"name":"mint","outputs":[{"internalType":"uint256","name":"liquidity","type":"uint256"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"name","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"nonces","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"owner","type":"address"},{"internalType":"address","name":"spender","type":"address"},{"internalType":"uint256","name":"value","type":"uint256"},{"internalType":"uint256","name":"deadline","type":"uint256"},{"internalType":"uint8","name":"v","type":"uint8"},{"internalType":"bytes32","name":"r","type":"bytes32"},{"internalType":"bytes32","name":"s","type":"bytes32"}],"name":"permit","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint32","name":"_futureA","type":"uint32"},{"internalType":"uint40","name":"_futureTime","type":"uint40"}],"name":"rampA","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint128","name":"_devFee","type":"uint128"}],"name":"setDevFee","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint32","name":"_swapFee","type":"uint32"}],"name":"setSwapFee","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"to","type":"address"}],"name":"skim","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"stopRampA","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"amount0Out","type":"uint256"},{"internalType":"uint256","name":"amount1Out","type":"uint256"},{"internalType":"address","name":"to","type":"address"},{"internalType":"bytes","name":"data","type":"bytes"}],"name":"swap","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"swapFee","outputs":[{"internalType":"uint32","name":"","type":"uint32"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"symbol","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"sync","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"token0","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"token0PrecisionMultiplier","outputs":[{"internalType":"uint128","name":"","type":"uint128"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"token1","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"token1PrecisionMultiplier","outputs":[{"internalType":"uint128","name":"","type":"uint128"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"totalSupply","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"value","type":"uint256"}],"name":"transfer","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint25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000000000000000000000000a0b86991c6218b36c1d19d4a2e9eb0ce3606eb48000000000000000000000000dac17f958d2ee523a2206206994597c13d831ec7

-----Decoded View---------------
Arg [0] : _token0 (address): 0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48
Arg [1] : _token1 (address): 0xdAC17F958D2ee523a2206206994597C13D831ec7

-----Encoded View---------------
2 Constructor Arguments found :
Arg [0] : 000000000000000000000000a0b86991c6218b36c1d19d4a2e9eb0ce3606eb48
Arg [1] : 000000000000000000000000dac17f958d2ee523a2206206994597c13d831ec7