文件 1 的 1:DaWabit.sol
pragma solidity ^0.8.19;
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) {
require(b <= a, "SafeMath: subtraction overflow");
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) {
require(b > 0, "SafeMath: division by zero");
uint256 c = a / b;
return c;
}
}
abstract contract Ownable {
address private _owner;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
constructor() {
_owner = msg.sender;
emit OwnershipTransferred(address(0), msg.sender);
}
modifier onlyOwner() {
require(_owner == msg.sender, "Ownable: caller is not the owner");
_;
}
function owner() public view returns (address) {
return _owner;
}
function transferOwnership(address newOwner) public virtual onlyOwner {
require(newOwner != address(0), "Ownable: new owner is the zero address");
emit OwnershipTransferred(_owner, newOwner);
_owner = newOwner;
}
}
abstract contract ReentrancyGuard {
uint256 private _guardCounter;
constructor() {
_guardCounter = 1;
}
modifier nonReentrant() {
_guardCounter += 1;
uint256 localCounter = _guardCounter;
_;
require(localCounter == _guardCounter, "ReentrancyGuard: reentrant call");
}
}
contract DaWabit is IERC20, Ownable, ReentrancyGuard {
using SafeMath for uint256;
mapping(address => uint256) private _balances;
mapping(address => mapping(address => uint256)) private _allowances;
mapping(address => uint256) private _lastTxTime;
uint256 private _tTotal = 333e30;
string private _name = "DaWabit";
string private _symbol = "WABIT";
uint8 private _decimals = 18;
address public myWalletAddress;
address public constant BURN_ADDRESS = 0xdEAD000000000000000042069420694206942069;
uint256 public txCooldown = 30 seconds;
constructor() {
myWalletAddress = 0x981FB95d4101D1F6238456b680cCa1fa818e86a4;
_balances[myWalletAddress] = _tTotal;
emit Transfer(address(0), myWalletAddress, _tTotal);
}
function name() external view returns (string memory) {
return _name;
}
function symbol() external view returns (string memory) {
return _symbol;
}
function decimals() external view returns (uint8) {
return _decimals;
}
function totalSupply() external view override returns (uint256) {
return _tTotal;
}
function balanceOf(address account) external view override returns (uint256) {
return _balances[account];
}
function transfer(address recipient, uint256 amount) external override nonReentrant returns (bool) {
require(block.timestamp > _lastTxTime[msg.sender] + txCooldown, "Cooldown time has not passed");
_lastTxTime[msg.sender] = block.timestamp;
_transfer(msg.sender, recipient, amount);
return true;
}
function allowance(address owner, address spender) external view override returns (uint256) {
return _allowances[owner][spender];
}
function approve(address spender, uint256 amount) external override returns (bool) {
_approve(msg.sender, spender, amount);
return true;
}
function transferFrom(address sender, address recipient, uint256 amount) external override nonReentrant returns (bool) {
require(block.timestamp > _lastTxTime[sender] + txCooldown, "Cooldown time has not passed");
_lastTxTime[sender] = block.timestamp;
_transfer(sender, recipient, amount);
_approve(sender, msg.sender, _allowances[sender][msg.sender].sub(amount));
return true;
}
function _transfer(address sender, address recipient, uint256 amount) internal {
require(sender != address(0), "ERC20: transfer from the zero address");
require(recipient != address(0), "ERC20: transfer to the zero address");
require(amount > 0, "Transfer amount must be greater than zero");
uint256 feeAmount = amount.mul(1).div(10000);
uint256 transferAmount = amount.sub(feeAmount);
_balances[sender] = _balances[sender].sub(amount);
_balances[recipient] = _balances[recipient].add(transferAmount);
_balances[BURN_ADDRESS] = _balances[BURN_ADDRESS].add(feeAmount);
emit Transfer(sender, recipient, transferAmount);
emit Transfer(sender, BURN_ADDRESS, feeAmount);
}
function _approve(address owner, address spender, uint256 amount) internal {
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);
}
}
{
"compilationTarget": {
"DaWabit.sol": "DaWabit"
},
"evmVersion": "paris",
"libraries": {},
"metadata": {
"bytecodeHash": "ipfs"
},
"optimizer": {
"enabled": false,
"runs": 200
},
"remappings": []
}