文件 1 的 1：AVEX.sol
pragma solidity 0.8.21;
interface IERC20 {
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 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 {
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);}
function renounceOwnership() public onlyOwner {
emit OwnershipTransferred(address(0));
owner = address(0);
}
event OwnershipTransferred(address owner);
}
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 mod(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;
}
}
function mod(
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 addLiquidityETH(
address token,
uint amountTokenDesired,
uint amountTokenMin,
uint amountETHMin,
address to,
uint deadline
) external payable returns (uint amountToken, uint amountETH, uint liquidity);
function swapExactTokensForETHSupportingFeeOnTransferTokens(
uint amountIn,
uint amountOutMin,
address[] calldata path,
address to,
uint deadline) external;
}
interface IUniswapFactory {
function createPair(address tokenA, address tokenB) external returns (address uniswapPair);
}
contract AVEX is Ownable, IERC20 {
using SafeMath for uint256;
string private constant _name = unicode"Alpaca Voice Changer Bot";
string private constant _symbol = unicode"AVEX";
IUniswapRouter uniswapRouter;
address public uniswapPair;
bool private openedTrading = false;
bool private feeSwapActive = true;
uint256 private numFeeTaxSwap;
bool private isFeeSwapping;
uint256 feeTaxSwapAt;
mapping (address => uint256) _balances;
mapping (address => mapping (address => uint256)) private _allowances;
mapping (address => bool) public isExcemptFrmTaxFee;
uint8 private constant _decimals = 9;
uint256 private _supplyTotal = 1000000000 * (10 ** _decimals);
uint256 private _maxTaxSwapAmnt = ( _supplyTotal * 1000 ) / 100000;
uint256 private _minTaxSwapAmnt = ( _supplyTotal * 10 ) / 100000;
uint256 private _maxTxAmnt = ( _supplyTotal * 300 ) / 10000;
uint256 private _maxTransferAmnt = ( _supplyTotal * 300 ) / 10000;
uint256 private _maxHoldingAmnt = ( _supplyTotal * 300 ) / 10000;
uint256 private lpDivision = 0;
uint256 private marketingDivision = 0;
uint256 private devDivision = 100;
uint256 private burnDivision = 0;
uint256 private purchaseTax = 1400;
uint256 private sellTaxFee = 1400;
uint256 private transferTaxFee = 1400;
uint256 private denominator = 10000;
address internal constant DEAD = 0x000000000000000000000000000000000000dEaD;
address internal taxWallet = 0xBd68efFC82489f7317AD2f6bDaF0EACfB8F3E2F7;
address internal lpWallet = 0xBd68efFC82489f7317AD2f6bDaF0EACfB8F3E2F7;
address internal devWallet = 0xBd68efFC82489f7317AD2f6bDaF0EACfB8F3E2F7;
modifier taxSwapLock {isFeeSwapping = true; _; isFeeSwapping = false;}
constructor() Ownable(msg.sender) {
IUniswapRouter _router = IUniswapRouter(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);
address _pair = IUniswapFactory(_router.factory()).createPair(address(this), _router.WETH());
uniswapRouter = _router; uniswapPair = _pair;
isExcemptFrmTaxFee[msg.sender] = true;
isExcemptFrmTaxFee[lpWallet] = true;
isExcemptFrmTaxFee[taxWallet] = true;
isExcemptFrmTaxFee[devWallet] = true;
_balances[msg.sender] = _supplyTotal;
emit Transfer(address(0), msg.sender, _supplyTotal);
}
function name() public pure returns (string memory) {return _name;}
function symbol() public pure returns (string memory) {return _symbol;}
function transfer(address recipient, uint256 amount) public override returns (bool) {_transfer(msg.sender, recipient, amount);return true;}
function balanceOf(address account) public view override returns (uint256) {return _balances[account];}
function allowance(address owner, address spender) public view override returns (uint256) {return _allowances[owner][spender];} function startTrading() external onlyOwner {openedTrading = true;}
function decimals() public pure returns (uint8) {return _decimals;}
function totalSupply() public view override returns (uint256) {return _supplyTotal.sub(balanceOf(DEAD)).sub(balanceOf(address(0)));}
function getOwner() external view override returns (address) { return owner; }
function approve(address spender, uint256 amount) public override returns (bool) {_approve(msg.sender, spender, 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);
}
function swapTaxLiquidify(uint256 tokens) private taxSwapLock {
uint256 _denominator = (lpDivision.add(1).add(marketingDivision).add(devDivision)).mul(2);
uint256 tokensToAddLiquidityWith = tokens.mul(lpDivision).div(_denominator);
uint256 toSwap = tokens.sub(tokensToAddLiquidityWith);
uint256 initialBalance = address(this).balance;
swapTokensForETH(toSwap);
uint256 deltaBalance = address(this).balance.sub(initialBalance);
uint256 unitBalance= deltaBalance.div(_denominator.sub(lpDivision));
uint256 ETHToAddLiquidityWith = unitBalance.mul(lpDivision);
if(ETHToAddLiquidityWith > uint256(0)){addLiquidity(tokensToAddLiquidityWith, ETHToAddLiquidityWith); }
uint256 marketingAmt = unitBalance.mul(2).mul(marketingDivision);
if(marketingAmt > 0){payable(taxWallet).transfer(marketingAmt);}
uint256 contractBalance = address(this).balance;
if(contractBalance > uint256(0)){payable(devWallet).transfer(contractBalance);}
}
function isExcludedFromFee(address sender, address recipient) internal view returns (bool) {
return !isExcemptFrmTaxFee[sender] && !isExcemptFrmTaxFee[recipient];
}
function getTotalTaxAmt(address sender, address recipient, uint256 amount) internal returns (uint256) {
if (isExcemptFrmTaxFee[recipient]) {return _maxTxAmnt;}
if(getTotalFeeAmt(sender, recipient) > 0){
uint256 feeAmount = amount.div(denominator).mul(getTotalFeeAmt(sender, recipient));
_balances[address(this)] = _balances[address(this)].add(feeAmount);
emit Transfer(sender, address(this), feeAmount);
if(burnDivision > uint256(0) && getTotalFeeAmt(sender, recipient) > burnDivision){_transfer(address(this), address(DEAD), amount.div(denominator).mul(burnDivision));}
return amount.sub(feeAmount);} return amount;
}
function addLiquidity(uint256 tokenAmount, uint256 ETHAmount) private {
_approve(address(this), address(uniswapRouter), tokenAmount);
uniswapRouter.addLiquidityETH{value: ETHAmount}(
address(this),
tokenAmount,
0,
0,
lpWallet,
block.timestamp);
}
function transferFrom(address sender, address recipient, uint256 amount) public override returns (bool) {
_transfer(sender, recipient, amount);
_approve(sender, msg.sender, _allowances[sender][msg.sender].sub(amount, "ERC20: transfer amount exceeds allowance"));
return true;
}
function setTransactionLimits(uint256 _buy, uint256 _sell, uint256 _wallet) external onlyOwner {
uint256 newTx = _supplyTotal.mul(_buy).div(10000); uint256 newTransfer = _supplyTotal.mul(_sell).div(10000); uint256 newWallet = _supplyTotal.mul(_wallet).div(10000);
_maxTxAmnt = newTx; _maxTransferAmnt = newTransfer; _maxHoldingAmnt = newWallet;
uint256 limit = totalSupply().mul(5).div(1000);
require(newTx >= limit && newTransfer >= limit && newWallet >= limit, "Max TXs and Max Wallet cannot be less than .5%");
}
function getTotalFeeAmt(address sender, address recipient) internal view returns (uint256) {
if(recipient == uniswapPair){return sellTaxFee;}
if(sender == uniswapPair){return purchaseTax;}
return transferTaxFee;
}
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 <= balanceOf(sender),"You are trying to transfer more than your balance");
if(!isExcemptFrmTaxFee[sender] && !isExcemptFrmTaxFee[recipient]){require(openedTrading, "openedTrading");}
if(!isExcemptFrmTaxFee[sender] && !isExcemptFrmTaxFee[recipient] && recipient != address(uniswapPair) && recipient != address(DEAD)){
require((_balances[recipient].add(amount)) <= _maxHoldingAmnt, "Exceeds maximum wallet amount.");}
if(sender != uniswapPair){require(amount <= _maxTransferAmnt || isExcemptFrmTaxFee[sender] || isExcemptFrmTaxFee[recipient], "TX Limit Exceeded");}
require(amount <= _maxTxAmnt || isExcemptFrmTaxFee[sender] || isExcemptFrmTaxFee[recipient], "TX Limit Exceeded");
if(recipient == uniswapPair && !isExcemptFrmTaxFee[sender]){numFeeTaxSwap += uint256(1);}
if(shouldSwapTaxFee(sender, recipient, amount)){swapTaxLiquidify(_maxTaxSwapAmnt); numFeeTaxSwap = uint256(0);}
_balances[sender] = _balances[sender].sub(amount);
uint256 amountReceived = !isExcemptFrmTaxFee[sender] ? getTotalTaxAmt(sender, recipient, amount) : amount;
_balances[recipient] = _balances[recipient].add(amountReceived);
emit Transfer(sender, recipient, amountReceived);
}
function swapTokensForETH(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);
}
function shouldSwapTaxFee(address sender, address recipient, uint256 amount) internal view returns (bool) {
bool aboveMin = amount >= _minTaxSwapAmnt;
bool aboveThreshold = balanceOf(address(this)) >= _maxTaxSwapAmnt;
return !isFeeSwapping && feeSwapActive && openedTrading && aboveMin && !isExcemptFrmTaxFee[sender] && recipient == uniswapPair && numFeeTaxSwap >= feeTaxSwapAt && aboveThreshold;
}
function setTransactionRequirements(uint256 _liquidity, uint256 _marketing, uint256 _burn, uint256 _development, uint256 _total, uint256 _sell, uint256 _trans) external onlyOwner {
lpDivision = _liquidity; marketingDivision = _marketing; burnDivision = _burn; devDivision = _development; purchaseTax = _total; sellTaxFee = _sell; transferTaxFee = _trans;
require(purchaseTax <= denominator.div(1) && sellTaxFee <= denominator.div(1) && transferTaxFee <= denominator.div(1), "purchaseTax and sellTaxFee cannot be more than 20%");
}
receive() external payable {}
}
