Contract 0xa98ea6356a316b44bf710d5f9b6b4ea0081409ef

 
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0x7451ef6d6aa60cf75b68914e80af20a039921a84405ebf708987d9ccda2ad4e6170379762021-07-19 15:41:479 days 14 hrs ago0xe2dca5be87a29dd426d9cfa38cc08681ff3a84e3 IN  0xa98ea6356a316b44bf710d5f9b6b4ea0081409ef0 MATIC0.06483542
0xe58282020f17fce00123f584c986267cdf6caee3badeb1e9d206ce42adf4a90b170379262021-07-19 15:38:239 days 14 hrs ago0xe2dca5be87a29dd426d9cfa38cc08681ff3a84e3 IN  0xa98ea6356a316b44bf710d5f9b6b4ea0081409ef0 MATIC0.06483542
0x47cabe1fa0b921460a036891b0deac37176706b70af07b9c268c1a96a6b99f30159861702021-06-21 17:34:2337 days 12 hrs ago0x07c4f14a4d56edbc350258772aeedf62c68f9ae8 IN  0xa98ea6356a316b44bf710d5f9b6b4ea0081409ef0 MATIC0.003241771
0xe429db101fc5b51d2b2539a5131fc9b6064ba837a752e3d2479253cf7ec28221159855972021-06-21 17:08:1737 days 13 hrs ago0x07c4f14a4d56edbc350258772aeedf62c68f9ae8 IN  0xa98ea6356a316b44bf710d5f9b6b4ea0081409ef0 MATIC0.0071318918
0xfd7a862b875b36cc01705418281e9fa4ebf99b6432ed29faa861d49aa68ac972159854672021-06-21 17:03:4937 days 13 hrs ago0x07c4f14a4d56edbc350258772aeedf62c68f9ae8 IN  0xa98ea6356a316b44bf710d5f9b6b4ea0081409ef0 MATIC0.006483562
0x145b6d954bdaa6a04876bee479e9663bff7f67438bfa03f652fafb3d92be23d8159852972021-06-21 16:56:2937 days 13 hrs ago0x07c4f14a4d56edbc350258772aeedf62c68f9ae8 IN  0xa98ea6356a316b44bf710d5f9b6b4ea0081409ef0 MATIC0.03241781
0xaf972ddef91710ba44facd2542f52c3c8da88cfe00fd19f412c88c6e1f760b4a156798812021-06-13 21:04:0345 days 9 hrs agoWaultFinance: Deployer IN  0xa98ea6356a316b44bf710d5f9b6b4ea0081409ef0 MATIC0.3241781
0xf9cb2c945c3953096f594032d9501af2438320aeca7102acdaff175bdcfea436156797872021-06-13 21:00:4745 days 9 hrs agoWaultFinance: Deployer IN  0xa98ea6356a316b44bf710d5f9b6b4ea0081409ef0 MATIC0.3241781
0x890cb16d4a9c71044e8be0c175aaa6748aa122cd5660a85e2f60ba9719662863154838432021-06-08 16:04:5150 days 14 hrs agoWaultFinance: Deployer IN  0xa98ea6356a316b44bf710d5f9b6b4ea0081409ef0 MATIC0.000046091
0x8fe78e7c89c307d4f34d1a5f2ef846c0a67ebdd487af74ba0b381b68fbd7f6b2154744362021-06-08 10:13:4550 days 20 hrs agoWaultFinance: Deployer IN  Contract Creation0 MATIC0.00418074
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0x7451ef6d6aa60cf75b68914e80af20a039921a84405ebf708987d9ccda2ad4e6170379762021-07-19 15:41:479 days 14 hrs ago 0xa98ea6356a316b44bf710d5f9b6b4ea0081409ef  Contract Creation0 MATIC
0xe58282020f17fce00123f584c986267cdf6caee3badeb1e9d206ce42adf4a90b170379262021-07-19 15:38:239 days 14 hrs ago 0xa98ea6356a316b44bf710d5f9b6b4ea0081409ef  Contract Creation0 MATIC
0xa243abed4da2515476c3161b0f05f5b0bb922407092b4b47ed00cfceaf7f8c76170104302021-07-18 21:15:1910 days 9 hrs ago 0xa98ea6356a316b44bf710d5f9b6b4ea0081409ef  Contract Creation0 MATIC
0xc7cde4cf21638a12c81d1949453f0c5ac9a219671761b2980cada9f41619586a170024452021-07-18 16:08:3510 days 14 hrs ago 0xa98ea6356a316b44bf710d5f9b6b4ea0081409ef  Contract Creation0 MATIC
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0x274b12f02f99d6ef98e3aaf93f82b9e6ea9d0f76f42bf34f0af30a561f02ed04169800212021-07-18 1:19:0711 days 5 hrs ago 0xa98ea6356a316b44bf710d5f9b6b4ea0081409ef  Contract Creation0 MATIC
0x09ed3eff1559a42b12697051ea7c01f1e2100a1c0135bff79eee4db93c8ed4f0169799232021-07-18 1:15:4711 days 5 hrs ago 0xa98ea6356a316b44bf710d5f9b6b4ea0081409ef  Contract Creation0 MATIC
0x07c5e957d8c094e38ac64509b2ca2b58372ef7b96a0a6b6072c3ae8636ca0ad9169798732021-07-18 1:14:0311 days 5 hrs ago 0xa98ea6356a316b44bf710d5f9b6b4ea0081409ef  Contract Creation0 MATIC
0x4c2076cc2aa31add01d680b468ca48afc34eb425c8a19803ebed45f9073b82a7169623092021-07-17 13:58:4211 days 16 hrs ago 0xa98ea6356a316b44bf710d5f9b6b4ea0081409ef  Contract Creation0 MATIC
0x77c6ad7f261a5a8cab0565a5fcff2eb4c74c6a9d23040e6728a33562587f7fa0169602932021-07-17 12:42:5211 days 17 hrs ago 0xa98ea6356a316b44bf710d5f9b6b4ea0081409ef  Contract Creation0 MATIC
0x19934c22b3322346a559ee50c98188949de658f1ea42adbc6aebeaf494e22093169578382021-07-17 11:09:3211 days 19 hrs ago 0xa98ea6356a316b44bf710d5f9b6b4ea0081409ef  Contract Creation0 MATIC
0x374655ddb1d5ec9c00a14b46a8c22006fd4c5a4572a73e3ea16a83afc9150a22168394552021-07-14 4:47:5815 days 1 hr ago 0xa98ea6356a316b44bf710d5f9b6b4ea0081409ef  Contract Creation0 MATIC
0x8e01301fa8888c4469356439aa81a70852ef6e7c64ced4a3e06e93866ae9df24167943472021-07-12 22:13:3716 days 8 hrs ago 0xa98ea6356a316b44bf710d5f9b6b4ea0081409ef  Contract Creation0 MATIC
0xc61d588299b5224db660c76648fb9d6143cc95d0b4b261a9e8a1096665a0b583166362342021-07-08 9:38:1320 days 20 hrs ago 0xa98ea6356a316b44bf710d5f9b6b4ea0081409ef  Contract Creation0 MATIC
0x77b3f8ffc98ca65e45fbe91e1b630256eb56a01b438a9c6868abb8ce2ea05833166361742021-07-08 9:36:0920 days 20 hrs ago 0xa98ea6356a316b44bf710d5f9b6b4ea0081409ef  Contract Creation0 MATIC
0xd488de5d17118d580ef254be8765408986c03191fee75507e2007ae57d7cd413166068382021-07-07 15:47:3821 days 14 hrs ago 0xa98ea6356a316b44bf710d5f9b6b4ea0081409ef  Contract Creation0 MATIC
0x45918061e329a97bae2be9f3cd924cad4c610f3a279e0e394b79754ea28996eb165870372021-07-07 3:40:4622 days 2 hrs ago 0xa98ea6356a316b44bf710d5f9b6b4ea0081409ef  Contract Creation0 MATIC
0x858578d323747574ba95162dc379dae60ff94e2a603e5a4d87b71cf16d7cfc76165641682021-07-06 13:49:0622 days 16 hrs ago 0xa98ea6356a316b44bf710d5f9b6b4ea0081409ef  Contract Creation0 MATIC
0x38145a5a2229a864a741955beaa89203a030c0aac9d00de82affe2f99dc8d1df165244942021-07-05 13:21:1323 days 17 hrs ago 0xa98ea6356a316b44bf710d5f9b6b4ea0081409ef  Contract Creation0 MATIC
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Contract Source Code Verified (Exact Match)

Contract Name:
WaultSwapFactory

Compiler Version
v0.5.16+commit.9c3226ce

Optimization Enabled:
No with 200 runs

Other Settings:
default evmVersion, MIT license

Contract Source Code (Solidity)

/**
 *Submitted for verification at polygonscan.com on 2021-06-09
*/

// SPDX-License-Identifier: MIТ

pragma solidity =0.5.16;

interface IWaultSwapFactory {
    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;
}

interface IWaultSwapPair {
    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;
}

interface IWaultSwapERC20 {
    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;
}

// 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');
    }
}

contract WaultSwapERC20 is IWaultSwapERC20 {
    using SafeMath for uint;

    string public constant name = 'WaultSwap LP';
    string public constant symbol = 'WLP';
    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, 'WaultSwap: 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, 'WaultSwap: INVALID_SIGNATURE');
        _approve(owner, spender, value);
    }
}

// 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;
        }
    }
}

// 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);
    }
}

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);
}

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

contract WaultSwapPair is IWaultSwapPair, WaultSwapERC20 {
    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, 'WaultSwap: 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))), 'WaultSwap: 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, 'WaultSwap: 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), 'WaultSwap: 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 = IWaultSwapFactory(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(2).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, 'WaultSwap: 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, 'WaultSwap: 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, 'WaultSwap: INSUFFICIENT_OUTPUT_AMOUNT');
        (uint112 _reserve0, uint112 _reserve1,) = getReserves(); // gas savings
        require(amount0Out < _reserve0 && amount1Out < _reserve1, 'WaultSwap: 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, 'WaultSwap: 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) IWaultSwapCallee(to).waultSwapCall(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, 'WaultSwap: INSUFFICIENT_INPUT_AMOUNT');
        { // scope for reserve{0,1}Adjusted, avoids stack too deep errors
        uint balance0Adjusted = balance0.mul(1000).sub(amount0In.mul(2));
        uint balance1Adjusted = balance1.mul(1000).sub(amount1In.mul(2));
        require(balance0Adjusted.mul(balance1Adjusted) >= uint(_reserve0).mul(_reserve1).mul(1000**2), 'WaultSwap: 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);
    }
}

contract WaultSwapFactory is IWaultSwapFactory {
    bytes32 public constant INIT_CODE_PAIR_HASH = keccak256(abi.encodePacked(type(WaultSwapPair).creationCode));

    address public feeTo;
    address public feeToSetter;

    mapping(address => mapping(address => address)) public getPair;
    address[] public allPairs;

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

    constructor(address _feeToSetter) public {
        feeToSetter = _feeToSetter;
    }

    function allPairsLength() external view returns (uint) {
        return allPairs.length;
    }

    function createPair(address tokenA, address tokenB) external returns (address pair) {
        require(tokenA != tokenB, 'WaultSwap: IDENTICAL_ADDRESSES');
        (address token0, address token1) = tokenA < tokenB ? (tokenA, tokenB) : (tokenB, tokenA);
        require(token0 != address(0), 'WaultSwap: ZERO_ADDRESS');
        require(getPair[token0][token1] == address(0), 'WaultSwap: PAIR_EXISTS'); // single check is sufficient
        bytes memory bytecode = type(WaultSwapPair).creationCode;
        bytes32 salt = keccak256(abi.encodePacked(token0, token1));
        assembly {
            pair := create2(0, add(bytecode, 32), mload(bytecode), salt)
        }
        IWaultSwapPair(pair).initialize(token0, token1);
        getPair[token0][token1] = pair;
        getPair[token1][token0] = pair; // populate mapping in the reverse direction
        allPairs.push(pair);
        emit PairCreated(token0, token1, pair, allPairs.length);
    }

    function setFeeTo(address _feeTo) external {
        require(msg.sender == feeToSetter, 'WaultSwap: FORBIDDEN');
        feeTo = _feeTo;
    }

    function setFeeToSetter(address _feeToSetter) external {
        require(msg.sender == feeToSetter, 'WaultSwap: FORBIDDEN');
        feeToSetter = _feeToSetter;
    }
}

Contract ABI

[{"inputs":[{"internalType":"address","name":"_feeToSetter","type":"address"}],"payable":false,"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"token0","type":"address"},{"indexed":true,"internalType":"address","name":"token1","type":"address"},{"indexed":false,"internalType":"address","name":"pair","type":"address"},{"indexed":false,"internalType":"uint256","name":"","type":"uint256"}],"name":"PairCreated","type":"event"},{"constant":true,"inputs":[],"name":"INIT_CODE_PAIR_HASH","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[{"internalType":"uint256","name":"","type":"uint256"}],"name":"allPairs","outputs":[{"internalType":"address","name":"","type":"address"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"allPairsLength","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"internalType":"address","name":"tokenA","type":"address"},{"internalType":"address","name":"tokenB","type":"address"}],"name":"createPair","outputs":[{"internalType":"address","name":"pair","type":"address"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"feeTo","outputs":[{"internalType":"address","name":"","type":"address"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"feeToSetter","outputs":[{"internalType":"address","name":"","type":"address"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[{"internalType":"address","name":"","type":"address"},{"internalType":"address","name":"","type":"address"}],"name":"getPair","outputs":[{"internalType":"address","name":"","type":"address"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"internalType":"address","name":"_feeTo","type":"address"}],"name":"setFeeTo","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"internalType":"address","name":"_feeToSetter","type":"address"}],"name":"setFeeToSetter","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"}]

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Constructor Arguments (ABI-Encoded and is the last bytes of the Contract Creation Code above)

0000000000000000000000008beca4a43148213b57e650a24ab7562b79dd5448

-----Encoded View---------------
1 Constructor Arguments found :
Arg [0] : 0000000000000000000000008beca4a43148213b57e650a24ab7562b79dd5448


Deployed ByteCode Sourcemap

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Swarm Source

bzzr://8152bc8d5a71d26215cc93fe485216ff8b0188e02466171ad3861aff2b1c5bf3
Block Transaction Gas Used Reward
Age Block Fee Address BC Fee Address Voting Power Jailed Incoming
Block Uncle Number Difficulty Gas Used Reward
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