文件 1 的 1：KITTEN.sol
pragma solidity ^0.8.16;
interface IERC20 {
function totalSupply() external view returns (uint256);
function balanceOf(address account) external view returns (uint256);
function transfer(
address recipient,
uint256 amount
) external returns (bool);
function allowance(
address owner,
address spender
) external view returns (uint256);
function approve(address spender, uint256 amount) external returns (bool);
function transferFrom(
address sender,
address recipient,
uint256 amount
) external returns (bool);
event Transfer(address indexed from, address indexed to, uint256 value);
event Approval(
address indexed owner,
address indexed spender,
uint256 value
);
}
library SafeMath {
function add(uint256 a, uint256 b) internal pure returns (uint256) {
return a + b;
}
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
return a - b;
}
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
return a * b;
}
function div(uint256 a, uint256 b) internal pure returns (uint256) {
return a / b;
}
function sub(
uint256 a,
uint256 b,
string memory errorMessage
) internal pure returns (uint256) {
unchecked {
require(b <= a, errorMessage);
return a - b;
}
}
function div(
uint256 a,
uint256 b,
string memory errorMessage
) internal pure returns (uint256) {
unchecked {
require(b > 0, errorMessage);
return a / b;
}
}
}
abstract contract Context {
function _msgSender() internal view virtual returns (address) {
return msg.sender;
}
}
abstract contract Ownable is Context {
address internal _owner;
address private _previousOwner;
event OwnershipTransferred(
address indexed previousOwner,
address indexed newOwner
);
constructor() {
_owner = _msgSender();
emit OwnershipTransferred(address(0), _owner);
}
function owner() public view virtual 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);
}
function transferOwnership(address newOwner) public virtual onlyOwner {
require(
newOwner != address(0),
"Ownable: new owner is the zero address"
);
emit OwnershipTransferred(_owner, newOwner);
_owner = newOwner;
}
}
interface IERC20Metadata is IERC20 {
function name() external view returns (string memory);
function symbol() external view returns (string memory);
function decimals() external view returns (uint8);
}
contract ERC20 is Context, Ownable, IERC20, IERC20Metadata {
using SafeMath for uint256;
mapping(address => uint256) private _balances;
mapping(address => mapping(address => uint256)) private _allowances;
uint256 private _totalSupply;
string private _name;
string private _symbol;
constructor(string memory name_, string memory symbol_) {
_name = name_;
_symbol = symbol_;
}
function name() public view virtual override returns (string memory) {
return _name;
}
function symbol() public view virtual override returns (string memory) {
return _symbol;
}
function decimals() public view virtual override returns (uint8) {
return 18;
}
function totalSupply() public view virtual override returns (uint256) {
return _totalSupply;
}
function balanceOf(
address account
) public view virtual override returns (uint256) {
return _balances[account];
}
function transfer(
address recipient,
uint256 amount
) public virtual override returns (bool) {
_transfer(_msgSender(), recipient, amount);
return true;
}
function allowance(
address owner,
address spender
) public view virtual override returns (uint256) {
return _allowances[owner][spender];
}
function approve(
address spender,
uint256 amount
) public virtual override returns (bool) {
_approve(_msgSender(), spender, amount);
return true;
}
function transferFrom(
address sender,
address recipient,
uint256 amount
) public virtual override returns (bool) {
_transfer(sender, recipient, amount);
_approve(
sender,
_msgSender(),
_allowances[sender][_msgSender()].sub(
amount,
"ERC20: transfer amount exceeds allowance"
)
);
return true;
}
function increaseAllowance(
address spender,
uint256 addedValue
) public virtual returns (bool) {
_approve(
_msgSender(),
spender,
_allowances[_msgSender()][spender].add(addedValue)
);
return true;
}
function decreaseAllowance(
address spender,
uint256 subtractedValue
) public virtual returns (bool) {
_approve(
_msgSender(),
spender,
_allowances[_msgSender()][spender].sub(
subtractedValue,
"ERC20: decreased allowance below zero"
)
);
return true;
}
function _transfer(
address sender,
address recipient,
uint256 amount
) internal virtual {
require(sender != address(0), "ERC20: transfer from the zero address");
require(recipient != address(0), "ERC20: transfer to the zero address");
_beforeTokenTransfer(sender, recipient, amount);
_balances[sender] = _balances[sender].sub(
amount,
"ERC20: transfer amount exceeds balance"
);
_balances[recipient] = _balances[recipient].add(amount);
emit Transfer(sender, recipient, amount);
}
function _mint(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: mint to the zero address");
_beforeTokenTransfer(address(0), account, amount);
_totalSupply = _totalSupply.add(amount);
_balances[account] = _balances[account].add(amount);
emit Transfer(address(0), account, amount);
}
function _burn(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: burn from the zero address");
_beforeTokenTransfer(account, address(0), amount);
_balances[account] = _balances[account].sub(
amount,
"ERC20: burn amount exceeds balance"
);
_totalSupply = _totalSupply.sub(amount);
emit Transfer(account, address(0), amount);
}
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 _beforeTokenTransfer(
address from,
address to,
uint256 amount
) internal virtual {}
}
interface IUniswapV2Factory {
function createPair(
address tokenA,
address tokenB
) external returns (address pair);
}
interface IUniswapV2Pair {
function factory() external view returns (address);
}
interface IUniswapV2Router01 {
function factory() external pure returns (address);
function WETH() external pure returns (address);
}
interface IUniswapV2Router02 is IUniswapV2Router01 {
function swapExactTokensForETHSupportingFeeOnTransferTokens(
uint amountIn,
uint amountOutMin,
address[] calldata path,
address to,
uint deadline
) external;
}
contract KITTEN is ERC20 {
using SafeMath for uint256;
mapping(address => bool) private _isExcludedFromFee;
mapping(address => bool) private _isExcludedFromMaxWallet;
mapping(address => bool) private _isExcludedFromMaxTnxLimit;
mapping (address => bool) private _isBlacklisted;
address public milkSupplies;
address constant _burnAddress = 0x000000000000000000000000000000000000dEaD;
uint256 public buyFee = 30;
uint256 public sellFee = 60;
IUniswapV2Router02 public uniswapV2Router;
address public uniswapV2Pair;
bool inSwapAndSendFees;
bool public swapAndSendFeesEnabled = true;
bool public tradingEnabled = false;
uint256 public numTokensSellToSendFees;
uint256 public maxWalletBalance;
uint256 public maxTnxAmount;
event MinTokensBeforeSwapUpdated(uint256 minTokensBeforeSwap);
event swapAndSendFeesEnabledUpdated(bool enabled);
event SwapAndLiquify(
uint256 tokensSwapped,
uint256 ethReceived,
uint256 tokensIntoLiqudity
);
modifier lockTheSwap() {
inSwapAndSendFees = true;
_;
inSwapAndSendFees = false;
}
constructor() ERC20("88KITTEN", "$KITTY") {
numTokensSellToSendFees = 500000000 * 10 ** decimals();
milkSupplies = 0x4FC4cf20647D5b35B5820A6Ede2333E45959C40E;
IUniswapV2Router02 _uniswapV2Router = IUniswapV2Router02(
0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D
);
uniswapV2Pair = IUniswapV2Factory(_uniswapV2Router.factory())
.createPair(address(this), _uniswapV2Router.WETH());
uniswapV2Router = _uniswapV2Router;
_isExcludedFromFee[_msgSender()] = true;
_isExcludedFromFee[address(this)] = true;
_isExcludedFromFee[milkSupplies] = true;
_isExcludedFromMaxWallet[owner()] = true;
_isExcludedFromMaxWallet[address(this)] = true;
_isExcludedFromMaxWallet[_burnAddress] = true;
_isExcludedFromMaxWallet[milkSupplies] = true;
_isExcludedFromMaxTnxLimit[owner()] = true;
_isExcludedFromMaxTnxLimit[address(this)] = true;
_isExcludedFromMaxTnxLimit[milkSupplies] = true;
_mint(owner(), 88000000000 * 10 ** decimals());
maxWalletBalance = (totalSupply() * 2) / 100;
maxTnxAmount = (totalSupply() * 2) / 100;
}
function includeAndExcludeFromFee(
address account,
bool value
) public onlyOwner {
_isExcludedFromFee[account] = value;
}
function includeAndExcludedFromMaxWallet(address account, bool value) public onlyOwner {
_isExcludedFromMaxWallet[account] = value;
}
function includeAndExcludedFromMaxTnxLimit(address account, bool value) public onlyOwner {
_isExcludedFromMaxTnxLimit[account] = value;
}
function isExcludedFromFee(address account) public view returns (bool) {
return _isExcludedFromFee[account];
}
function isExcludedFromMaxWallet(address account) public view returns(bool){
return _isExcludedFromMaxWallet[account];
}
function isExcludedFromMaxTnxLimit(address account) public view returns(bool) {
return _isExcludedFromMaxTnxLimit[account];
}
function removeFromBlackList(address account) external onlyOwner {
_isBlacklisted[account] = false;
}
function isBlackList(address account) external view returns (bool) {
return _isBlacklisted[account];
}
function addToBlackList(address account) external onlyOwner {
require(account != owner(),"Owner address can not blacklisted");
_isBlacklisted[account] = true;
}
function enableTrading() external onlyOwner {
tradingEnabled = true;
}
function setBuyAndSellFee(
uint256 bFee,
uint256 sFee
) external onlyOwner {
buyFee = bFee;
sellFee = sFee;
}
function setMilkSupplies(address _addr) external onlyOwner {
milkSupplies = _addr;
}
function setMaxBalance(uint256 maxBalancePercent) external onlyOwner {
maxWalletBalance = maxBalancePercent * 10 ** decimals();
}
function setMaxTxAmount(uint256 maxTxAmount) external onlyOwner {
maxTnxAmount = maxTxAmount * 10 ** decimals();
}
function setNumTokensSellToSendFees(uint256 amount) external onlyOwner {
numTokensSellToSendFees = amount * 10 ** decimals();
}
function setswapAndSendFeesEnabled(bool _enabled) external onlyOwner {
swapAndSendFeesEnabled = _enabled;
emit swapAndSendFeesEnabledUpdated(_enabled);
}
receive() external payable {}
function _transfer(
address from,
address to,
uint256 amount
) internal override {
require(!_isBlacklisted[from] && !_isBlacklisted[to], "ERC20: This address is blacklisted");
require(from != address(0), "ERC20: transfer from the zero address");
require(to != address(0), "ERC20: transfer to the zero address");
require(amount > 0, "Transfer amount must be greater than zero");
if (from != owner() && !tradingEnabled) {
require(tradingEnabled, "Trading is not enabled yet");
}
if (from != owner() && to != owner())
require(
_isExcludedFromMaxTnxLimit[from] ||
_isExcludedFromMaxTnxLimit[to] ||
amount <= maxTnxAmount,
"ERC20: Transfer amount exceeds the MaxTnxAmount."
);
if (
from != owner() &&
to != address(this) &&
to != _burnAddress &&
to != uniswapV2Pair
) {
uint256 currentBalance = balanceOf(to);
require(
_isExcludedFromMaxWallet[to] ||
(currentBalance + amount <= maxWalletBalance),
"ERC20: Reached Max wallet holding"
);
}
uint256 contractTokenBalance = balanceOf(address(this));
bool overMinTokenBalance = contractTokenBalance >=
numTokensSellToSendFees;
if (
overMinTokenBalance &&
!inSwapAndSendFees &&
from != uniswapV2Pair &&
swapAndSendFeesEnabled
) {
contractTokenBalance = numTokensSellToSendFees;
swapBack(contractTokenBalance);
}
bool takeFee = true;
if (_isExcludedFromFee[from] || _isExcludedFromFee[to]) {
super._transfer(from, to, amount);
takeFee = false;
} else {
if (from == uniswapV2Pair) {
uint256 marketingTokens = amount.mul(buyFee).div(100);
amount = amount.sub(marketingTokens);
super._transfer(from, address(this), marketingTokens);
super._transfer(from, to, amount);
} else if (to == uniswapV2Pair) {
uint256 marketingTokens = amount.mul(sellFee).div(
100
);
amount = amount.sub(marketingTokens);
super._transfer(from, address(this), marketingTokens);
super._transfer(from, to, amount);
} else {
super._transfer(from, to, amount);
}
}
}
function swapBack(uint256 contractBalance) private lockTheSwap {
uint256 marketingTokens = contractBalance.mul(sellFee).div(
100
);
uint256 totalTokensToSwap = marketingTokens;
if (contractBalance == 0 || totalTokensToSwap == 0) {
return;
}
bool success;
swapTokensForEth(contractBalance);
uint256 ethBalance = address(this).balance;
uint256 ethForMarketing = (ethBalance * marketingTokens) /
(totalTokensToSwap);
(success, ) = address(milkSupplies).call{
value: ethForMarketing
}("");
}
function swapTokensForEth(uint256 tokenAmount) private {
address[] memory path = new address[](2);
path[0] = address(this);
path[1] = uniswapV2Router.WETH();
_approve(address(this), address(uniswapV2Router), tokenAmount);
uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(
tokenAmount,
0,
path,
address(this),
block.timestamp
);
}
}
