文件 1 的 1：OpenRunesToken.sol
pragma solidity 0.8.4;
library SafeMath {
function add(uint a, uint b) internal pure returns (uint) {
uint c = a + b;
require(c >= a, "SafeMath: addition overflow");
return c;
}
function sub(uint a, uint b) internal pure returns (uint) {
return sub(a, b, "SafeMath: subtraction overflow");
}
function sub(uint a, uint b, string memory errorMessage) internal pure returns (uint) {
require(b <= a, errorMessage);
uint c = a - b;
return c;
}
function mul(uint a, uint b) internal pure returns (uint) {
if (a == 0) {
return 0;
}
uint c = a * b;
require(c / a == b, "SafeMath: multiplication overflow");
return c;
}
function div(uint a, uint b) internal pure returns (uint) {
return div(a, b, "SafeMath: division by zero");
}
function div(uint a, uint b, string memory errorMessage) internal pure returns (uint) {
require(b > 0, errorMessage);
uint c = a / b;
return c;
}
function mod(uint a, uint b) internal pure returns (uint) {
return mod(a, b, "SafeMath: modulo by zero");
}
function mod(uint a, uint b, string memory errorMessage) internal pure returns (uint) {
require(b != 0, errorMessage);
return a % b;
}
}
library StringUtils {
function strLen(string memory s) internal pure returns (uint256) {
uint256 len;
uint256 i = 0;
uint256 bytelength = bytes(s).length;
for (len = 0; i < bytelength; len++) {
bytes1 b = bytes(s)[i];
if (b < 0x80) {
i += 1;
} else if (b < 0xE0) {
i += 2;
} else if (b < 0xF0) {
i += 3;
} else if (b < 0xF8) {
i += 4;
} else if (b < 0xFC) {
i += 5;
} else {
i += 6;
}
}
return len;
}
function toLower(string memory s) internal pure returns (string memory) {
bytes memory _bytes = bytes(s);
for (uint i = 0; i < _bytes.length; i++) {
if (uint8(_bytes[i]) >= 65 && uint8(_bytes[i]) <= 90) {
_bytes[i] = bytes1(uint8(_bytes[i]) + 32);
}
}
return string(_bytes);
}
}
abstract contract ReentrancyGuard {
uint256 private constant _NOT_ENTERED = 1;
uint256 private constant _ENTERED = 2;
uint256 private _status;
constructor() {
_status = _NOT_ENTERED;
}
modifier nonReentrant() {
require(_status != _ENTERED, "ReentrancyGuard: reentrant call");
_status = _ENTERED;
_;
_status = _NOT_ENTERED;
}
}
interface IERC20 {
function totalSupply() external view returns (uint);
function balanceOf(address account) external view returns (uint);
function transfer(address recipient, uint amount) external returns (bool);
function allowance(address owner, address spender) external view returns (uint);
function approve(address spender, uint amount) external returns (bool);
function transferFrom(address sender, address recipient, uint amount) external returns (bool);
event Transfer(address indexed from, address indexed to, uint value);
event Approval(address indexed owner, address indexed spender, uint value);
}
interface IERC20Metadata is IERC20 {
function name() external view returns (string memory);
function symbol() external view returns (string memory);
function decimals() external view returns (uint8);
}
interface OpenRunesPair {
function selltoken(address user , uint tokenamount) external ;
}
contract OpenRunesToken is IERC20 , IERC20Metadata{
using SafeMath for uint;
mapping(address => bool) private iswhite;
mapping(address => uint) private _balances;
mapping(address => mapping(address => uint256)) private _allowances;
uint256 private _totalSupply;
string private _name;
string private _symbol;
bool cantransfer;
address pair;
address factory;
constructor(
uint supply,
string memory tick
){
_totalSupply = supply;
_name = tick;
_symbol = tick;
factory = msg.sender;
_balances[factory] = _totalSupply;
iswhite[factory] = true;
emit Transfer(address(0), factory, _totalSupply);
}
modifier onlyFactory() {
require(msg.sender == factory, "Only Factory");
_;
}
function name() public view virtual override returns (string memory) {
return _name;
}
function symbol() public view virtual override returns (string memory) {
return _symbol;
}
function decimals() public view virtual override returns (uint8) {
return 18;
}
function totalSupply() public override view returns (uint) {
return _totalSupply;
}
function balanceOf(address account) public override view returns (uint) {
return _balances[account];
}
function transfer(address recipient, uint amount) public override returns (bool) {
_transfer(msg.sender, recipient, amount);
return true;
}
function allowance(address owner, address spender) public view override returns (uint) {
return _allowances[owner][spender];
}
function approve(address spender, uint amount) public override returns (bool) {
_approve(msg.sender, spender, amount);
return true;
}
function transferFrom(address sender, address recipient, uint 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 increaseAllowance(address spender, uint addedValue) public returns (bool) {
_approve(msg.sender, spender, _allowances[msg.sender][spender].add(addedValue));
return true;
}
function decreaseAllowance(address spender, uint subtractedValue) public returns (bool) {
_approve(msg.sender, spender, _allowances[msg.sender][spender].sub(subtractedValue, "ERC20: decreased allowance below zero"));
return true;
}
function _transfer(address sender, address to, uint amount) internal {
require(sender != address(0), "ERC20: transfer from the zero address");
require(amount > 0, "Transfer amount must be greater than zero");
require(_balances[sender] >= amount,"exceed balance!");
require(iswhite[sender] || iswhite[to] || cantransfer,"can not transfer");
_balances[sender] = _balances[sender].sub(amount);
_balances[to] = _balances[to].add(amount);
if(to == pair && sender != factory){
OpenRunesPair(pair).selltoken(sender,amount);
}
emit Transfer(sender, to, amount);
}
function _approve(address owner, address spender, uint 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);
}
function setpair(address _pair) external onlyFactory{
pair = _pair;
iswhite[_pair] = true;
}
function setwhite(address _user,bool _iswhite) external onlyFactory{
iswhite[_user] = _iswhite;
}
function settransfer(bool _cantransfer) external onlyFactory{
cantransfer = _cantransfer;
}
}
