文件 1 的 1:PapaSmurfCat.sol
pragma solidity 0.8.21;
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;
address private _previousOwner;
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);
}
contract PapaSmurfCat is Context, IERC20, Ownable {
using SafeMath for uint256;
mapping (address => uint256) private _rOwned;
mapping (address => mapping (address => uint256)) private _allowances;
mapping (address => bool) private _isFeeExempt;
uint256 private _buyMarketingFee = 20;
uint256 private _previousBuyMarketingFee = _buyMarketingFee;
uint256 private _sellMarketingFee = 50;
uint256 private _previousSellMarketingFee = _sellMarketingFee;
address payable public marketingFeeReceiver;
string public constant name = "Papa Smurf Cat";
string public constant symbol = "Rascal";
uint8 public constant decimals = 18;
uint256 public constant totalSupply = 89_000_000_000 * 10**decimals;
IUniswapV2Router02 public uniswapV2Router;
address public uniswapV2Pair;
bool public tradingOpen = false;
bool private swapping;
bool private inSwap = false;
bool private swapEnabled = false;
uint256 private _maxWalletAmount = totalSupply / 50;
uint256 private swapTokensAtAmount = totalSupply / 200;
modifier lockTheSwap {
inSwap = true;
_;
inSwap = false;
}
constructor () {
marketingFeeReceiver = payable(0xd770A3379Ba220ff8d86db7Ea668F7784Fc0357D);
_rOwned[_msgSender()] = totalSupply;
_isFeeExempt[owner()] = true;
_isFeeExempt[address(this)] = true;
_isFeeExempt[marketingFeeReceiver] = true;
emit Transfer(address(0), _msgSender(), totalSupply);
IUniswapV2Router02 _uniswapV2Router = IUniswapV2Router02(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);
uniswapV2Router = _uniswapV2Router;
_approve(address(this), address(uniswapV2Router), totalSupply);
uniswapV2Pair = IUniswapV2Factory(_uniswapV2Router.factory()).createPair(address(this), _uniswapV2Router.WETH());
IERC20(uniswapV2Pair).approve(address(uniswapV2Router), type(uint).max);
}
function balanceOf(address account) public view override returns (uint256) {
return _rOwned[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 setSwapEnabled(bool onoff) external onlyOwner(){
swapEnabled = onoff;
}
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");
bool takeFee = false;
bool shouldSwap = false;
if(from != owner() && to != owner()){
require(tradingOpen,"Trading not open yet");
}
if (from != owner() && to != owner() && to != address(0) && to != address(0xdead) && !swapping) {
takeFee = true;
if (from == uniswapV2Pair && to != address(uniswapV2Router) && !_isFeeExempt[to]) {
require(balanceOf(to) + amount <= _maxWalletAmount, "Exceeds maximum wallet token amount.");
}
}
if(_isFeeExempt[from] || _isFeeExempt[to]) {
takeFee = false;
}
uint256 contractTokenBalance = balanceOf(address(this));
bool canSwap = (contractTokenBalance > swapTokensAtAmount) && shouldSwap;
if (canSwap && swapEnabled && !swapping && !_isFeeExempt[from] && !_isFeeExempt[to]) {
swapping = true;
swapBack();
swapping = false;
}
_tokenTransfer(from,to,amount,takeFee, shouldSwap);
}
function swapBack() private {
uint256 contractBalance = balanceOf(address(this));
bool success;
if(contractBalance == 0) {return;}
if(contractBalance > swapTokensAtAmount * 5) {
contractBalance = swapTokensAtAmount * 2;
}
swapTokensForEth(contractBalance);
(success,) = address(marketingFeeReceiver).call{value: address(this).balance}("");
}
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 openTrading() external onlyOwner() {
require(!tradingOpen,"trading is already open");
swapEnabled = true;
tradingOpen = true;
}
function removeLimits() external onlyOwner {
_maxWalletAmount = totalSupply;
}
function setSwapTokensAtAmount(uint256 newAmount, bool _enabled) external onlyOwner {
swapEnabled = _enabled;
swapTokensAtAmount = newAmount;
}
function setMarketingWallet(address MarketingWallet) external onlyOwner() {
marketingFeeReceiver = payable(MarketingWallet);
}
function excludeFromFee(address account) external onlyOwner {
_isFeeExempt[account] = true;
}
function includeInFee(address account) external onlyOwner {
_isFeeExempt[account] = false;
}
function setBuyFee(uint256 buyMarketingFee) external onlyOwner {
_buyMarketingFee = buyMarketingFee;
}
function setSellFee(uint256 sellMarketingFee) external onlyOwner {
_sellMarketingFee = sellMarketingFee;
}
function removeAllFee() private {
if(_buyMarketingFee == 0 && _sellMarketingFee == 0) return;
_previousBuyMarketingFee = _buyMarketingFee;
_previousSellMarketingFee = _sellMarketingFee;
_buyMarketingFee = 0;
_sellMarketingFee = 0;
}
function restoreAllFee() private {
_buyMarketingFee = _previousBuyMarketingFee;
_sellMarketingFee = _previousSellMarketingFee;
}
function _tokenTransfer(address sender, address recipient, uint256 amount, bool takeFee, bool isSell) private {
if(!takeFee) {
removeAllFee();
} else {
amount = _takeFees(sender, amount, isSell);
}
_transferStandard(sender, recipient, amount);
if(!takeFee) {
restoreAllFee();
}
}
function _transferStandard(address sender, address recipient, uint256 tAmount) private {
_rOwned[sender] = _rOwned[sender].sub(tAmount);
_rOwned[recipient] = _rOwned[recipient].add(tAmount);
emit Transfer(sender, recipient, tAmount);
}
function _takeFees(address sender, uint256 amount, bool isSell) private returns (uint256) {
uint256 _totalFees;
_totalFees = _getTotalFees(isSell);
uint256 fees = amount.mul(_totalFees).div(100);
if(fees > 0) {
_transferStandard(sender, address(this), fees);
}
return amount -= fees;
}
receive() external payable {}
function manualswap() external onlyOwner() {
uint256 contractBalance = balanceOf(address(this));
swapTokensForEth(contractBalance);
}
function manualSend() external onlyOwner() {
uint256 contractETHBalance = address(this).balance;
marketingFeeReceiver.transfer(contractETHBalance);
}
function _getTotalFees(bool isSell) private view returns(uint256) {
if (isSell) {
return _sellMarketingFee;
}
return _buyMarketingFee;
}
}