MOVR Price: $21.66 (+0.22%)
Gas: 3 GWei

Contract

0x5aC1F0b2ee43048beb1bC76a85763CFB3D23CE0b

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25739252022-09-15 20:10:24560 days ago1663272624  Contract Creation0 MOVR
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Similar Match Source Code
This contract matches the deployed Bytecode of the Source Code for Contract 0xCE21B290...a3A9aE75a
The constructor portion of the code might be different and could alter the actual behaviour of the contract

Contract Name:
ZirconPair

Compiler Version
v0.5.16+commit.9c3226ce

Optimization Enabled:
Yes with 1 runs

Other Settings:
default evmVersion

Contract Source Code (Solidity Standard Json-Input format)

File 1 of 10 : ZirconPair.sol
// SPDX-License-Identifier: GPL-3.0
pragma solidity =0.5.16;

import './libraries/Math.sol';
import './libraries/UQ112x112.sol';
//import './interfaces/IERC20.sol';
import './interfaces/IZirconPair.sol';
import '@uniswap/v2-core/contracts/interfaces/IUniswapV2Callee.sol';
import './libraries/SafeMath.sol';
import "./ZirconERC20.sol";
import "./interfaces/IZirconFactory.sol";
import '@uniswap/v2-core/contracts/interfaces/IUniswapV2ERC20.sol';

//import "./libraries/ZirconLibrary.sol";
import "./energy/interfaces/IZirconEnergyRevenue.sol";

contract ZirconPair is IZirconPair, ZirconERC20 { //Name change does not affect ABI
    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;

    address public energyRevenueAddress;

    uint112 private reserve0;           // uses single storage slot, accessible via getReserves
    uint112 private reserve1;           // us es 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;
    }

    function tryLock() external lock {}

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

    // 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);
    }

    //Wrapper around mintFee primarily aimed to be called by Pylon
    //Access control is unnecessary, if anyone calls it they just waste gas compounding fees for us
    //The wrapper is necessary to make sure the reserves it passes to mintFee are actual
    function publicMintFee() external lock {
        (uint112 _reserve0, uint112 _reserve1,) = getReserves();

        _mintFee(_reserve0, _reserve1);

        kLast = uint(reserve0).mul(reserve1); //Reserves don't change from mintFee
    }

    // if fee is on, mint liquidity equivalent to 1/6th of the growth in sqrt(k)
    function _mintFee(uint112 _reserve0, uint112 _reserve1) private {
    uint _kLast = kLast; // gas savings
        if (_kLast != 0) {
            uint rootK = Math.sqrt(uint(_reserve0).mul(_reserve1));
            uint rootKLast = Math.sqrt(_kLast);
            if (rootK > rootKLast) {
                uint dynamicRatio = IZirconFactory(factory).dynamicRatio();
                uint numerator = (rootK.sub(rootKLast)).mul(1e18);
                uint denominator = rootK.mul(dynamicRatio).add(rootKLast);
                uint liquidityPercentage = numerator / denominator;

                if (liquidityPercentage > 0) {
                    //                    console.log("C ore: liqPercentage", liquidityPercentage);
                    _mint(energyRevenueAddress, liquidityPercentage.mul(totalSupply)/1e18);
                    //                    _mint(energyRevenueAddress, liquidityPercentage.mul(totalSupply)/1e18);
                    uint totalPercentage = ((rootK.sub(rootKLast)).mul(1e18))/rootKLast;
                    IZirconEnergyRevenue(energyRevenueAddress).calculate(totalPercentage.sub(liquidityPercentage));
                }
            }
        }
    }

    // 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 = IUniswapV2ERC20(token0).balanceOf(address(this));
        uint balance1 = IUniswapV2ERC20(token1).balanceOf(address(this));
        uint amount0 = balance0.sub(_reserve0);
        uint amount1 = balance1.sub(_reserve1);

        _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);
        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
    // TODO: will be better if we pass the output amount
    function mintOneSide(address to, bool isReserve0) external lock returns (uint liquidity, uint amount0, uint amount1) {
        require(totalSupply > 0, 'UniswapV2: Use mint to start pair');
        (uint112 _reserve0, uint112 _reserve1,) = getReserves(); // gas savings

        uint balance0 = IUniswapV2ERC20(token0).balanceOf(address(this));
        uint balance1 = IUniswapV2ERC20(token1).balanceOf(address(this));
        amount0 = balance0.sub(_reserve0);
        amount1 = balance1.sub(_reserve1);

        uint _liquidityFee = IZirconFactory(factory).liquidityFee();
        uint k;

        //We use growth in sqrt(k) to calculate amount of pool tokens to mint. This implicitly takes care of slippage.
        //Fee is slightly more than half total amount to account for residue you'd have if you swapped then minted normally

        if (isReserve0){
            require(amount0 > 1, "ZP: Insufficient Amount");
            k = Math.sqrt(uint(reserve0 + (amount0.mul(10000-(_liquidityFee/2 + 1))/10000)).mul(balance1));
        }else{
            require(amount1 > 1, "ZP: Insufficient Amount");
            k = Math.sqrt(balance0.mul(uint(reserve1 + (amount1.mul(10000-(_liquidityFee/2 + 1))/10000))));
        }
        uint kBefore = Math.sqrt(uint(reserve0).mul(reserve1));

        uint numerator = (k.sub(kBefore)).mul(totalSupply);
        uint denominator = kBefore;
        liquidity = numerator / denominator;
        reserve0 = uint112(balance0);
        reserve1 = uint112(balance1);
        _mintFee(_reserve0, _reserve1);

        require(liquidity > 0, 'UniswapV2: INSUFFICIENT_LIQUIDITY_MINTED');
        _mint(to, liquidity);
        _update(balance0, balance1, _reserve0, _reserve1);
        kLast = uint(reserve0).mul(reserve1); // reserve0 and reserve1 are up-to-date
        emit Mint(msg.sender, amount0, amount1);
    }

    function getAmountOut(uint amountIn, uint reserveIn, uint reserveOut, uint fee) internal pure returns (uint amountOut) {
        require(amountIn > 0, 'UV2: IIA');
        require(reserveIn > 0 && reserveOut > 0, 'UV2: IL');
        uint amountInWithFee = amountIn.mul(10000-fee);
        uint numerator = amountInWithFee.mul(reserveOut);
        uint denominator = reserveIn.mul(10000).add(amountInWithFee);
        amountOut = numerator / denominator;
    }

    // this low-level function should be called from a contract which performs important safety checks
    // TODO: Test this function
    // TODO: maybe allow burning both sides to one
    function burnOneSide(address to, bool isReserve0) external lock returns (uint amount) {
        (uint112 _reserve0, uint112 _reserve1,) = getReserves(); // gas savings
        address _token0 = token0;                                // gas savings
        address _token1 = token1;                                // gas savings
        uint amount0;
        uint amount1;
        uint balance0 = IUniswapV2ERC20(_token0).balanceOf(address(this));
        uint balance1 = IUniswapV2ERC20(_token1).balanceOf(address(this));
        uint liquidity = balanceOf[address(this)];
        uint _liquidityFee = IZirconFactory(factory).liquidityFee();

        _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
        if (isReserve0) {
            amount0 += getAmountOut(amount1, _reserve1 - amount1, _reserve0 - amount0, _liquidityFee);
            amount = amount0;
            require(amount < balance0, "UniswapV2: EXTENSION_NOT_ENOUGH_LIQUIDITY");
        }else{
            amount1 += getAmountOut(amount0, _reserve0 - amount0, _reserve1 - amount1, _liquidityFee);
            amount = amount1;
            require(amount < balance1, "UniswapV2: EXTENSION_NOT_ENOUGH_LIQUIDITY");
        }
        require(amount0 > 0 && amount1 > 0, 'UniswapV2: INSUFFICIENT_LIQUIDITY_BURNED');
        _burn(address(this), liquidity);
        if (isReserve0) {
            _safeTransfer(_token0, to, amount);
        }else{
            _safeTransfer(_token1, to, amount);
        }
        balance0 = IUniswapV2ERC20(_token0).balanceOf(address(this));
        balance1 = IUniswapV2ERC20(_token1).balanceOf(address(this));

        _update(balance0, balance1, _reserve0, _reserve1);
        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 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 = IUniswapV2ERC20(_token0).balanceOf(address(this));
        uint balance1 = IUniswapV2ERC20(_token1).balanceOf(address(this));
        uint liquidity = balanceOf[address(this)];
        _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 = IUniswapV2ERC20(_token0).balanceOf(address(this));
        balance1 = IUniswapV2ERC20(_token1).balanceOf(address(this));

        _update(balance0, balance1, _reserve0, _reserve1);
        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 = IUniswapV2ERC20(_token0).balanceOf(address(this));
            balance1 = IUniswapV2ERC20(_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 _liquidityFee = IZirconFactory(factory).liquidityFee();
            uint balance0Adjusted = balance0.mul(10000).sub(amount0In.mul(_liquidityFee));
            uint balance1Adjusted = balance1.mul(10000).sub(amount1In.mul(_liquidityFee));
            require(balance0Adjusted.mul(balance1Adjusted) >= uint(_reserve0).mul(_reserve1).mul(10000**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, IUniswapV2ERC20(_token0).balanceOf(address(this)).sub(reserve0));
//        _safeTransfer(_token1, to, IUniswapV2ERC20(_token1).balanceOf(address(this)).sub(reserve1));
//    }

    // force reserves to match balances
    function sync() external lock {
        _update(IUniswapV2ERC20(token0).balanceOf(address(this)), IUniswapV2ERC20(token1).balanceOf(address(this)), reserve0, reserve1);
    }

    function changeEnergyRevAddress(address _revAddress) external {
        require(msg.sender == factory, 'UniswapV2: NOT_ALLOWED');
        energyRevenueAddress = _revAddress;
    }
}

File 2 of 10 : Math.sol
// SPDX-License-Identifier: GPL-3.0
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;
    }
    function max(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 3 of 10 : UQ112x112.sol
// SPDX-License-Identifier: GPL-3.0

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 4 of 10 : IZirconPair.sol
// SPDX-License-Identifier: GPL-3.0

pragma solidity >=0.5.16;

interface IZirconPair {
    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 energyRevenueAddress() external pure returns (address);
    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 burnOneSide(address to, bool isReserve0) external returns (uint amount);
    function mintOneSide(address to, bool isReserve0) external returns (uint liquidity, uint amount0, uint amount1);
    function publicMintFee() external;
    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 tryLock() external;

    function initialize(address, address, address) external;
    function changeEnergyRevAddress(address _revAddress) external;

}

File 5 of 10 : IUniswapV2Callee.sol
pragma solidity >=0.5.0;

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

File 6 of 10 : SafeMath.sol
// SPDX-License-Identifier: GPL-3.0

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 7 of 10 : ZirconERC20.sol
pragma solidity =0.5.16;
import './libraries/SafeMath.sol';
import '@uniswap/v2-core/contracts/interfaces/IUniswapV2ERC20.sol';

contract ZirconERC20 is IUniswapV2ERC20 {
    using SafeMath for uint;
    // TODO: change name of token
    string public constant name = 'Zircon';
    string public constant symbol = 'ZPT';
    uint8 public constant decimals = 18;
    uint public totalSupply;
    mapping(address => uint)  public balanceOf;
    mapping(address => mapping(address => uint)) public allowance;
    // keccak256("Permit(address owner,address spender,uint256 value,uint256 nonce,uint256 deadline)");
    bytes32 public constant PERMIT_TYPEHASH = 0x6e71edae12b1b97f4d1f60370fef10105fa2faae0126114a169c64845d6126c9;
    mapping(address => uint) public nonces;
    bytes32 public DOMAIN_SEPARATOR;

    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 8 of 10 : IZirconFactory.sol
pragma solidity >=0.5.16;

interface IZirconFactory {
    //    function feeTo() external view returns (address);
    //    function feeToSetter() external view returns (address);
    //    function migrator() external view returns (address);
    function energyFactory() external view returns (address);

    function getPair(address, address) external view returns (address pair);
    function allPairs(uint) external view returns (address pair);
    function allPairsLength() external view returns (uint);
    function dynamicRatio() external view returns (uint);
    function liquidityFee() external view returns (uint);
    function setLiquidityFee(uint _liquidityFee) external;

    function pairCodeHash() external pure returns (bytes32);
    function createPair(address tokenA, address tokenB, address _pylonFactory) external returns (address pair);

    function setMigrator(address _migrator) external;
    function setFeeToSetter(address _feeToSetter) external;
    function changeEnergyRevAddress(address _pairAddress, address _tokenA, address _tokenB, address _pylonFactory) external returns (address newEnergy);

    function changeEnergyFactoryAddress(address _newEnergyFactory) external;
    function setDynamicRatio(uint _dynamicRatio) external;

}

File 9 of 10 : 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 10 of 10 : IZirconEnergyRevenue.sol
pragma solidity =0.5.16;

interface IZirconEnergyRevenue {
    function initialize(address _pair, address _tokenA, address _tokenB, address energy0, address energy1, address pylon0, address pylon1) external;
    function calculate(uint percentage) external;
    function migrateLiquidity(address newEnergy) external;
    function getBalanceFromPair() external returns (uint);
    function feeValue1() external returns (uint);
    function feeValue0() external returns (uint);
    function getFees(address _token, uint _amount, address _to) external;
    function setFeeValue(uint _feeValue0, uint _feeValue1) external;
}

Settings
{
  "optimizer": {
    "enabled": true,
    "runs": 1
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "metadata": {
    "useLiteralContent": true
  },
  "libraries": {}
}

Contract Security Audit

Contract ABI

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Mutability":"view","type":"function"},{"constant":false,"inputs":[{"internalType":"address","name":"_token0","type":"address"},{"internalType":"address","name":"_token1","type":"address"},{"internalType":"address","name":"_energy","type":"address"}],"name":"initialize","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"kLast","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"internalType":"address","name":"to","type":"address"}],"name":"mint","outputs":[{"internalType":"uint256","name":"liquidity","type":"uint256"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"internalType":"address","name":"to","type":"address"},{"internalType":"bool","name":"isReserve0","type":"bool"}],"name":"mintOneSide","outputs":[{"internalType":"uint256","name":"liquidity","type":"uint256"},{"internalType":"uint256","name":"amount0","type":"uint256"},{"internalType":"uint256","name":"amount1","type":"uint256"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"name","outputs":[{"internalType":"string","name":"","type":"string"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"nonces","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"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":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"price0CumulativeLast","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"price1CumulativeLast","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[],"name":"publicMintFee","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"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":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"symbol","outputs":[{"internalType":"string","name":"","type":"string"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[],"name":"sync","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"token0","outputs":[{"internalType":"address","name":"","type":"address"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"token1","outputs":[{"internalType":"address","name":"","type":"address"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"totalSupply","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"value","type":"uint256"}],"name":"transfer","outputs":[{"internalType":"bool","name":"","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"value","type":"uint256"}],"name":"transferFrom","outputs":[{"internalType":"bool","name":"","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[],"name":"tryLock","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"}]

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