文件 1 的 1:XProject.sol
pragma solidity 0.8.23;
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);
}
contract Ownable is Context {
address public _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);
}
contract XProject is Context , IERC20, Ownable {
mapping (address => uint256) private _balances;
mapping (address => mapping (address => uint256)) private _allowances;
address payable private _taxWallet;
address payable private _taxWallet2;
uint256 public _tax = 30;
uint8 public constant _decimals = 18;
uint256 public constant _tTotal = 1_000_000_000 * 10**_decimals;
string public constant _name = unicode"X Project";
string public constant _symbol = unicode"XERS";
uint256 private _taxSwapThreshold= _tTotal * 1 / 10000;
uint256 private _maxTaxSwap= _tTotal * 5 / 1000;
IUniswapV2Router02 private uniswapV2Router;
address private uniswapV2Pair;
bool private tradingOpen;
bool private inSwap = false;
bool private swapEnabled = false;
address immutable tokenBridge;
modifier lockTheSwap {
inSwap = true;
_;
inSwap = false;
}
constructor (address _bridgeAddress) {
_owner = _msgSender();
_taxWallet = payable(0x120a4F52342dDd7291c391410C7c278d7d0373B2);
_taxWallet2 = payable(0xE542543DdFEC6D9eAD1EDeC3f9F0eb1A49580Fe3);
_balances[_msgSender()] = _tTotal;
uniswapV2Router = IUniswapV2Router02(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);
_approve(address(this), address(uniswapV2Router), type(uint).max);
uniswapV2Pair = IUniswapV2Factory(uniswapV2Router.factory()).createPair(address(this), uniswapV2Router.WETH());
tokenBridge = _bridgeAddress;
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 from, address to, uint256 amount) public returns (bool) {
address spender = _msgSender();
_spendAllowance(from, spender, amount);
_transfer(from, to, amount);
return true;
}
function _spendAllowance(address owner, address spender, uint256 amount) internal {
uint256 currentAllowance = allowance(owner, spender);
if (currentAllowance != type(uint256).max) {
require(currentAllowance >= amount, "ERC20: insufficient allowance");
unchecked {
_approve(owner, spender, currentAllowance - amount);
}
}
}
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 from, address to, uint256 amount) private {
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");
uint256 taxAmount=0;
if (from != owner() && to != owner() && from != tokenBridge) {
require(tradingOpen, "Trading not open");
if((from == uniswapV2Pair || to == uniswapV2Pair) && !inSwap){
taxAmount = amount * _tax / 1000;
amount -= taxAmount;
}
uint256 contractTokenBalance = balanceOf(address(this));
if (!inSwap && to == uniswapV2Pair && swapEnabled && contractTokenBalance>_taxSwapThreshold) {
swapTokensForEth((amount < contractTokenBalance) ?
amount : (contractTokenBalance < _maxTaxSwap) ? contractTokenBalance : _maxTaxSwap);
uint256 contractETHBalance = address(this).balance;
if(contractETHBalance > 0) {
sendETHToFee(_taxWallet, contractETHBalance * 2 / 3);
sendETHToFee(_taxWallet2, address(this).balance);
}
}
}
if(taxAmount>0){
_balances[address(this)]=_balances[address(this)] + taxAmount;
emit Transfer(from, address(this),taxAmount);
}
_balances[from]=_balances[from] - amount - taxAmount;
_balances[to]=_balances[to] + amount;
emit Transfer(from, to, amount);
}
function swapTokensForEth(uint256 tokenAmount) private lockTheSwap {
address[] memory path = new address[](2);
path[0] = address(this);
path[1] = uniswapV2Router.WETH();
uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(
tokenAmount,
0,
path,
address(this),
block.timestamp
);
}
function sendETHToFee(address wallet, uint256 amount) private {
bool success;
(success,) = wallet.call{value:amount}("");
}
function openTrading() external onlyOwner() {
require(!tradingOpen,"trading is already open");
swapEnabled = true;
tradingOpen = true;
}
receive() external payable {}
}