Contract Source Code:
/*
▄▀█ █▀█ █▀▀ █▀▀ ▄▀█ █▀▀ ▀█▀ █▀█ █▀█ █▄█
█▀█ █▀▀ ██▄ █▀░ █▀█ █▄▄ ░█░ █▄█ █▀▄ ░█░
Trade on ApeFactory and have fun!
Web: https://apefactory.fun/
*/
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.25;
import "./ERC20.sol";
contract Token is ERC20 {
address private immutable _creator;
address private _owner;
address private _router;
address private _pair;
bool private _escaped;
bool private _initialized;
uint24 private _maxBalance;
uint24 private _tax;
uint32 private _launch;
mapping(address => bool) private _unauthorized;
struct HolderView {
address holder;
uint256 balance;
}
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
error ErrorUnauthorized(address sender);
error ErrorAlreadyInitialized();
error ErrorUnapprovable();
error ErrorMaxBalanceExceeded();
error ErrorInvalidRecipient(address to);
error ErrorInvalidRange();
modifier onlyOwner() {
if (msg.sender != _owner) { revert ErrorUnauthorized(msg.sender); }
_;
}
constructor(address _owner_, address _creator_, string memory _name_, string memory _symbol_, uint8 _decimals_, uint256 _totalSupply_) ERC20(_name_, _symbol_, _decimals_) payable {
_creator = _creator_;
_owner = _owner_;
_mint(_owner_, _totalSupply_);
}
function initialize(address _router_, address _pair_, uint24 _maxBalance_, uint24 _tax_, uint32 _launch_, address[] calldata _unauthorized_) external onlyOwner {
if (_initialized) { revert ErrorAlreadyInitialized(); }
unchecked {
uint256 cnt = _unauthorized_.length;
for (uint256 i; i < cnt; i++) { _unauthorized[_unauthorized_[i]] = true; }
}
_router = _router_;
_pair = _pair_;
_maxBalance = _maxBalance_;
_tax = _tax_;
_launch = _launch_;
_initialized = true;
}
function owner() external view returns (address) {
return _owner;
}
/// @notice Returns the creator address
function creator() external view returns (address) {
return _creator;
}
function approve(address spender, uint256 value) public override returns (bool) {
if (!_escaped && spender != _router) { revert ErrorUnapprovable(); }
return super.approve(spender, value);
}
function permit(address owner_, address spender, uint256 value, uint256 deadline, uint8 v, bytes32 r, bytes32 s) public override {
if (!_escaped && spender != _router) { revert ErrorUnapprovable(); }
super.permit(owner_, spender, value, deadline, v, r, s);
}
function _transferCheck(address from, address to, uint256 value) private view {
if (_escaped || ((from == _owner && to == _pair) || ((!_escaped && to == _owner) || value == 0 || to == address(0xdEaD) || to == _router || to == _pair))) { return; }
if (!_escaped) {
if (_unauthorized[to]) { revert ErrorInvalidRecipient(to); }
unchecked {
if (_maxBalance == 100_000 || _balance[to] + value <= _percentage(_totalSupply, uint256(_maxBalance))) { return; }
}
}
revert ErrorMaxBalanceExceeded();
}
function transfer(address to, uint256 value) external virtual override returns (bool) {
_transfer(msg.sender, to, value);
return true;
}
function _transfer(address from, address to, uint256 value) internal virtual override {
_transferCheck(from, to, value);
super._transfer(from, to, value);
}
function transferFrom(address from, address to, uint256 value) public override returns (bool) {
if (!_escaped && msg.sender == _router && to == _pair && _allowance[from][_router] != type(uint256).max) { super._approve(from, _router, type(uint256).max, false); }
_transferCheck(from, to, value);
return super.transferFrom(from, to, value);
}
function totalHolders() external view returns (uint24 total) {
return _totalHolders;
}
function holders(uint256 offset, uint256 limit) public view returns (HolderView[] memory) {
if (offset >= _totalHolders) { revert ErrorInvalidRange(); }
unchecked {
if (offset + limit > _totalHolders) { limit = _totalHolders - offset; }
}
HolderView[] memory list = new HolderView[](limit);
unchecked {
uint256 j;
for (uint256 i = offset; j < limit; i++) {
address holder = _holders[i];
if (holder == address(0xdEaD) || _balance[holder] == 0) { continue; }
list[j].holder = holder;
list[j].balance = _balance[holder];
++j;
}
}
return list;
}
function maxBalance() external view returns (uint24) {
return _maxBalance;
}
function tax() external view returns (uint24) {
return _tax;
}
function launch() external view returns (uint32) {
return _launch;
}
/// @notice Returns True if token has reached the target MC and is now tradeable on a public DEX
function escaped() external view returns (bool) {
return _escaped;
}
function escape() external onlyOwner {
if (_escaped) { revert ErrorUnauthorized(msg.sender); }
if (_maxBalance < 100_000) { _maxBalance = 100_000; } // 100%
address _previousOwner = _owner;
delete _tax;
delete _owner;
delete _router;
delete _pair;
_escaped = true;
emit OwnershipTransferred(_previousOwner, _owner);
}
function _percentage(uint256 value, uint256 bps) private pure returns (uint256) {
unchecked {
return (value * bps) / 100_000;
}
}
function _timestamp() private view returns (uint32) {
unchecked {
return uint32(block.timestamp % 2**32);
}
}
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.25;
abstract contract ERC20 {
uint8 private immutable _decimals;
uint24 internal _totalHolders;
uint256 internal _totalSupply;
string private _name;
string private _symbol;
bytes32 public immutable DOMAIN_SEPARATOR;
bytes32 private constant PERMIT_TYPEHASH = 0x6e71edae12b1b97f4d1f60370fef10105fa2faae0126114a169c64845d6126c9; // keccak256("Permit(address owner,address spender,uint256 value,uint256 nonce,uint256 deadline)");
address[] internal _holders;
mapping(address => uint256) private _nonces;
mapping(address => uint256) internal _balance;
mapping(address => mapping(address => uint256)) internal _allowance;
mapping(address => bool) internal _holderData;
event Approval(address indexed owner, address indexed spender, uint256 value);
event Transfer(address indexed from, address indexed to, uint256 value);
error ERC20InvalidApprover(address owner);
error ERC20InvalidSpender(address spender);
error ERC20InvalidSender(address sender);
error ERC20InvalidReceiver(address to);
error ERC20InsufficientAllowance(address spender, uint256 allowance, uint256 value);
error ERC20InsufficientBalance(address owner, uint256 balance, uint256 value);
error ERC2612ExpiredSignature(uint256 deadline);
error ERC2612InvalidSigner(address signer, address owner);
constructor(string memory _name_, string memory _symbol_, uint8 _decimals_) {
_name = _name_;
_symbol = _symbol_;
_decimals = _decimals_;
DOMAIN_SEPARATOR = keccak256(abi.encode(keccak256("EIP712Domain(string name,string version,uint256 chainId,address verifyingContract)"), keccak256(bytes(_name)), keccak256(bytes("1")), block.chainid, address(this)));
}
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 returns (uint256) {
return _totalSupply;
}
function balanceOf(address account) external view returns (uint256) {
return _balance[account];
}
function allowance(address owner, address spender) public view returns (uint256) {
return _allowance[owner][spender];
}
function approve(address spender, uint256 value) public virtual returns (bool) {
_approve(msg.sender, spender, value, true);
return true;
}
function permit(address owner, address spender, uint256 value, uint256 deadline, uint8 v, bytes32 r, bytes32 s) public virtual {
if (block.timestamp > deadline) { revert ERC2612ExpiredSignature(deadline); }
unchecked {
address signer = ecrecover(keccak256(abi.encodePacked(hex"1901", DOMAIN_SEPARATOR, keccak256(abi.encode(PERMIT_TYPEHASH, owner, spender, value, _nonces[owner]++, deadline)))), v, r, s);
if (signer != owner) { revert ERC2612InvalidSigner(signer, owner); }
}
_approve(owner, spender, value, true);
}
function nonces(address owner) external view returns (uint256) {
return _nonces[owner];
}
function transfer(address to, uint256 value) external virtual returns (bool) {
_transfer(msg.sender, to, value);
return true;
}
function transferFrom(address from, address to, uint256 value) public virtual returns (bool) {
if (value > 0) {
address spender = msg.sender;
uint256 allowed = allowance(from, spender);
if (allowed < value) { revert ERC20InsufficientAllowance(to, allowed, value); }
if (allowed != type(uint256).max) {
unchecked {
_approve(from, spender, allowed - value, false);
}
}
}
_transfer(from, to, value);
return true;
}
function burn(uint256 value) external returns (bool) {
_transfer(msg.sender, address(0xdEaD), value);
return true;
}
function _approve(address owner, address spender, uint256 value, bool emitEvent) internal {
if (owner == address(0)) { revert ERC20InvalidApprover(owner); }
if (spender == address(0)) { revert ERC20InvalidSpender(spender); }
_allowance[owner][spender] = value;
if (emitEvent) { emit Approval(owner, spender, value); }
}
function _transfer(address from, address to, uint256 value) internal virtual {
if (from == address(0)) { revert ERC20InvalidSender(from); }
if (to == address(0) || to == address(this)) { revert ERC20InvalidReceiver(to); }
if (_balance[from] < value) { revert ERC20InsufficientBalance(from, _balance[from], value); }
if (value > 0) {
unchecked {
_balance[from] -= value;
if (_balance[from] == 0) { --_totalHolders; }
if (to == address(0xdEaD)) {
_totalSupply -= value;
} else {
if (_balance[to] == 0) { ++_totalHolders; }
_balance[to] += value;
if (!_holderData[to]) {
_holderData[to] = true;
_holders.push(to);
}
}
}
}
emit Transfer(from, to, value);
}
function _mint(address to, uint256 value) internal {
if (to == address(0) || to == address(0xdEaD)) { revert ERC20InvalidReceiver(to); }
unchecked {
if (_balance[to] == 0) { ++_totalHolders; }
_totalSupply += value;
_balance[to] += value;
if (!_holderData[to]) {
_holderData[to] = true;
_holders.push(to);
}
}
emit Transfer(address(0), to, value);
}
}