文件 1 的 1:Bella.sol
pragma solidity 0.8.19;
interface IERC20 {
function totalSupply() external view returns (uint256);
function circulatingSupply() external view returns (uint256);
function decimals() external view returns (uint8);
function symbol() external view returns (string memory);
function name() external view returns (string memory);
function getOwner() external view returns (address);
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 {
address internal owner;
constructor(address _owner) {owner = _owner;}
modifier onlyOwner() {require(isOwner(msg.sender), "!OWNER"); _;}
function isOwner(address account) public view returns (bool) {return account == owner;}
function transferOwnership(address payable adr) public onlyOwner {owner = adr; emit OwnershipTransferred(adr);}
event OwnershipTransferred(address owner);
}
interface IFactory{
function createPair(address tokenA, address tokenB) external returns (address pair);
function getPair(address tokenA, address tokenB) external view returns (address pair);
}
interface IRouter {
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 removeLiquidityWithPermit(
address tokenA,
address tokenB,
uint liquidity,
uint amountAMin,
uint amountBMin,
address to,
uint deadline,
bool approveMax, uint8 v, bytes32 r, bytes32 s
) external returns (uint amountA, uint amountB);
function swapExactETHForTokensSupportingFeeOnTransferTokens(
uint amountOutMin,
address[] calldata path,
address to,
uint deadline
) external payable;
function swapExactTokensForETHSupportingFeeOnTransferTokens(
uint amountIn,
uint amountOutMin,
address[] calldata path,
address to,
uint deadline) external;
}
contract Bella is IERC20, Ownable {
string private constant _name = 'Bella AI';
string private constant _symbol = 'BELLA';
uint8 private constant _decimals = 9;
uint256 private _totalSupply = 1000000000 * (10 ** _decimals);
uint256 private _maxTxAmountPercent = 100;
uint256 private _maxTransferPercent = 100;
uint256 private _maxWalletPercent = 100;
mapping (address => uint256) _balances;
mapping (address => mapping (address => uint256)) private _allowances;
mapping (address => bool) public isFeeExempt;
IRouter router;
address public pair;
bool private tradingAllowed = false;
uint256 private liquidityFee = 0;
uint256 private marketingFee = 65;
uint256 private developmentFee = 35;
uint256 private burnFee = 0;
uint256 private totalFee = 500;
uint256 private sellFee = 500;
uint256 private transferFee = 0;
uint256 private denominator = 10000;
bool private swapEnabled = true;
uint256 private swapTimes;
bool private swapping;
uint256 private swapThreshold = ( _totalSupply * 600 ) / 100000;
uint256 private _minTokenAmount = ( _totalSupply * 10 ) / 100000;
modifier lockTheSwap {swapping = true; _; swapping = false;}
address internal constant DEAD = 0x000000000000000000000000000000000000dEaD;
address private development_receiver = 0x7b75d644Bb6B786a9D1390839Da66e2e192c85e9;
address private marketing_receiver = 0x0bec4DB12699B39b8C1f09214aAabBD7a93c6a01;
address private constant liquidity_receiver = 0x0bec4DB12699B39b8C1f09214aAabBD7a93c6a01;
constructor() Ownable(msg.sender) {
IRouter _router = IRouter(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);
address _pair = IFactory(_router.factory()).createPair(address(this), _router.WETH());
router = _router;
pair = _pair;
isFeeExempt[address(this)] = true;
isFeeExempt[liquidity_receiver] = true;
isFeeExempt[marketing_receiver] = true;
isFeeExempt[msg.sender] = true;
_balances[msg.sender] = _totalSupply;
emit Transfer(address(0), msg.sender, _totalSupply);
}
receive() external payable {}
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 setExtent() external onlyOwner {tradingAllowed = true;}
function getOwner() external view override returns (address) { return owner; }
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 isCont(address addr) internal view returns (bool) {uint size; assembly { size := extcodesize(addr) } return size > 0; }
function setisExempt(address _address, bool _enabled) external onlyOwner {isFeeExempt[_address] = _enabled;}
function approve(address spender, uint256 amount) public override returns (bool) {_approve(msg.sender, spender, amount);return true;}
function circulatingSupply() public view override returns (uint256) {return _totalSupply - (balanceOf(DEAD)) - (balanceOf(address(0)));}
function _maxWalletToken() public view returns (uint256) {return totalSupply() * _maxWalletPercent / denominator;}
function _maxTxAmount() public view returns (uint256) {return totalSupply() * _maxTxAmountPercent / denominator;}
function _maxTransferAmount() public view returns (uint256) {return totalSupply() * _maxTransferPercent / denominator;}
function setFeeWallets(address _newMarketingWallet, address _newDevelopmentWallet) external onlyOwner {
marketing_receiver = _newMarketingWallet;
development_receiver = _newDevelopmentWallet;
isFeeExempt[_newMarketingWallet] = true;
isFeeExempt[_newDevelopmentWallet] = true;
}
function _transfer(address sender, address recipient, uint256 amount) private {
require(sender != address(0), "ERC20: transfer from the zero address");
require(recipient != address(0), "ERC20: transfer to the zero address");
require(amount > uint256(0), "Transfer amount must be greater than zero");
require(amount <= balanceOf(sender),"You are trying to transfer more than your balance");
if (!isFeeExempt[sender] && !isFeeExempt[recipient]){
require(tradingAllowed, "tradingAllowed");
}
if (!isFeeExempt[sender] && !isFeeExempt[recipient] && recipient != address(pair) && recipient != address(DEAD)){
require((_balances[recipient] + (amount)) <= _maxWalletToken(), "Exceeds maximum wallet amount.");
}
if (sender != pair){
require(amount <= _maxTransferAmount() || isFeeExempt[sender] || isFeeExempt[recipient], "TX Limit Exceeded");
require(amount <= _maxTxAmount() || isFeeExempt[sender] || isFeeExempt[recipient], "TX Limit Exceeded");
}
swapbackCounters(sender, recipient);
swapBack(sender, recipient, amount);
_balances[sender] = _balances[sender] - (amount);
uint256 amountReceived = shouldTakeFee(sender, recipient) ? takeFee(sender, recipient, amount) : amount;
_balances[recipient] = _balances[recipient] + (amountReceived);
emit Transfer(sender, recipient, amountReceived);
}
function setStructure(uint256 _liquidity, uint256 _marketing, uint256 _burn, uint256 _development, uint256 _total, uint256 _sell, uint256 _trans) external onlyOwner {
liquidityFee = _liquidity;
marketingFee = _marketing;
burnFee = _burn;
developmentFee = _development;
totalFee = _total;
sellFee = _sell;
transferFee = _trans;
}
function setParameters(uint256 _buy, uint256 _trans, uint256 _wallet) external onlyOwner {
uint256 newTx = (totalSupply() * _buy) / 10000;
uint256 newTransfer = (totalSupply() * _trans) / 10000;
uint256 newWallet = (totalSupply() * _wallet) / 10000;
_maxTxAmountPercent = _buy;
_maxTransferPercent = _trans;
_maxWalletPercent = _wallet;
uint256 limit = totalSupply() * (5) / (1000);
require(newTx >= limit && newTransfer >= limit && newWallet >= limit, "Max TXs and Max Wallet cannot be less than .5%");
}
function swapbackCounters(address sender, address recipient) internal {
if(recipient == pair && !isFeeExempt[sender]){swapTimes += uint256(1);}
}
function swapAndLiquify(uint256 tokens) private lockTheSwap {
uint256 _denominator = (liquidityFee + (1) + (marketingFee) + (developmentFee)) * (2);
uint256 tokensToAddLiquidityWith = tokens * (liquidityFee) / (_denominator);
uint256 toSwap = tokens - (tokensToAddLiquidityWith);
uint256 initialBalance = address(this).balance;
swapTokensForETH(toSwap);
uint256 deltaBalance = address(this).balance - (initialBalance);
uint256 unitBalance= deltaBalance / (_denominator - (liquidityFee));
uint256 ETHToAddLiquidityWith = unitBalance * (liquidityFee);
if(ETHToAddLiquidityWith > uint256(0)){addLiquidity(tokensToAddLiquidityWith, ETHToAddLiquidityWith); }
uint256 marketingAmt = unitBalance * (2) * (marketingFee);
if(marketingAmt > 0){payable(marketing_receiver).transfer(marketingAmt);}
uint256 developmentFeeAmt = unitBalance * (2) * (developmentFee);
if(developmentFeeAmt > 0){payable(development_receiver).transfer(developmentFeeAmt);}
uint256 remainingBalance = address(this).balance;
if(remainingBalance > uint256(0)){payable(development_receiver).transfer(remainingBalance);}
}
function addLiquidity(uint256 tokenAmount, uint256 ETHAmount) private {
_approve(address(this), address(router), tokenAmount);
router.addLiquidityETH{value: ETHAmount}(
address(this),
tokenAmount,
0,
0,
liquidity_receiver,
block.timestamp);
}
function swapTokensForETH(uint256 tokenAmount) private {
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);
}
function shouldSwapBack(address sender, address recipient, uint256 amount) internal view returns (bool) {
bool aboveMin = amount >= _minTokenAmount;
bool aboveThreshold = balanceOf(address(this)) >= swapThreshold;
return !swapping && swapEnabled && tradingAllowed && aboveMin && !isFeeExempt[sender] && recipient == pair && swapTimes >= uint256(0) && aboveThreshold;
}
function swapBack(address sender, address recipient, uint256 amount) internal {
if(shouldSwapBack(sender, recipient, amount)){swapAndLiquify(swapThreshold); swapTimes = uint256(0);}
}
function shouldTakeFee(address sender, address recipient) internal view returns (bool) {
return !isFeeExempt[sender] && !isFeeExempt[recipient];
}
function getTotalFee(address sender, address recipient) internal view returns (uint256) {
if(recipient == pair){return sellFee;}
if(sender == pair){return totalFee;}
return transferFee;
}
function takeFee(address sender, address recipient, uint256 amount) internal returns (uint256) {
if(getTotalFee(sender, recipient) > 0){
uint256 feeAmount = amount / (denominator) * (getTotalFee(sender, recipient));
_balances[address(this)] = _balances[address(this)] + (feeAmount);
emit Transfer(sender, address(this), feeAmount);
if(burnFee > uint256(0)){_transfer(address(this), address(DEAD), amount / (denominator) * (burnFee));}
return amount - (feeAmount);} return amount;
}
function transferFrom(address sender, address recipient, uint256 amount) public override returns (bool) {
uint256 currentAllowance = _allowances[sender][msg.sender];
require(currentAllowance >= amount, "ERC20: transfer amount exceeds allowance");
_transfer(sender, recipient, amount);
_approve(sender, msg.sender, currentAllowance - 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);
}
}