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pragma solidity 0.8.9;
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abstract contract Context {
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function _msgSender() internal view virtual returns(address) {
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return msg.sender;
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}
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function _msgData() internal view virtual returns(bytes calldata) {
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this;
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return msg.data;
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}
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}
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interface IUniswapV2Pair {
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event Approval(address indexed owner, address indexed spender, uint value);
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event Transfer(address indexed from, address indexed to, uint value);
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function name() external pure returns(string memory);
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function symbol() external pure returns(string memory);
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function decimals() external pure returns(uint8);
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function totalSupply() external view returns(uint);
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function balanceOf(address owner) external view returns(uint);
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function allowance(address owner, address spender) external view returns(uint);
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function approve(address spender, uint value) external returns(bool);
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function transfer(address to, uint value) external returns(bool);
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function transferFrom(address from, address to, uint value) external returns(bool);
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function DOMAIN_SEPARATOR() external view returns(bytes32);
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function PERMIT_TYPEHASH() external pure returns(bytes32);
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function nonces(address owner) external view returns(uint);
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function permit(address owner, address spender, uint value, uint deadline, uint8 v, bytes32 r, bytes32 s) external;
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function MINIMUM_LIQUIDITY() external pure returns(uint);
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function factory() external view returns(address);
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function token0() external view returns(address);
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function token1() external view returns(address);
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function getReserves() external view returns(uint112 reserve0, uint112 reserve1, uint32 blockTimestampLast);
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function price0CumulativeLast() external view returns(uint);
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function price1CumulativeLast() external view returns(uint);
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function kLast() external view returns(uint);
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function mint(address to) external returns(uint liquidity);
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function burn(address to) external returns(uint amount0, uint amount1);
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function swap(uint amount0Out, uint amount1Out, address to, bytes calldata data) external;
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function skim(address to) external;
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function sync() external;
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function initialize(address, address) external;
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}
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interface IUniswapV2Factory {
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event PairCreated(address indexed token0, address indexed token1, address pair, uint);
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function feeTo() external view returns(address);
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function feeToSetter() external view returns(address);
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function getPair(address tokenA, address tokenB) external view returns(address pair);
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function allPairs(uint) external view returns(address pair);
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function allPairsLength() external view returns(uint);
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function createPair(address tokenA, address tokenB) external returns(address pair);
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function setFeeTo(address) external;
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function setFeeToSetter(address) external;
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}
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interface IERC20 {
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function totalSupply() external view returns(uint256);
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function balanceOf(address account) external view returns(uint256);
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function transfer(address recipient, uint256 amount) external returns(bool);
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function allowance(address owner, address spender) external view returns(uint256);
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function approve(address spender, uint256 amount) external returns(bool);
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function transferFrom(
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address sender,
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address recipient,
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uint256 amount
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) external returns(bool);
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event Transfer(address indexed from, address indexed to, uint256 value);
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event Approval(address indexed owner, address indexed spender, uint256 value);
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}
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interface IERC20Metadata is IERC20 {
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function name() external view returns(string memory);
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function symbol() external view returns(string memory);
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function decimals() external view returns(uint8);
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}
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contract ERC20 is Context, IERC20, IERC20Metadata {
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using SafeMath for uint256;
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mapping(address => uint256) private _balances;
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mapping(address => mapping(address => uint256)) private _allowances;
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uint256 private _totalSupply;
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string private _name;
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string private _symbol;
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constructor(string memory name_, string memory symbol_) {
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_name = name_;
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_symbol = symbol_;
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}
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function name() public view virtual override returns(string memory) {
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return _name;
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}
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function symbol() public view virtual override returns(string memory) {
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return _symbol;
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}
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function decimals() public view virtual override returns(uint8) {
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return 18;
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}
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function totalSupply() public view virtual override returns(uint256) {
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return _totalSupply;
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}
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function balanceOf(address account) public view virtual override returns(uint256) {
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return _balances[account];
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}
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function transfer(address recipient, uint256 amount) public virtual override returns(bool) {
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_transfer(_msgSender(), recipient, amount);
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return true;
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}
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function allowance(address owner, address spender) public view virtual override returns(uint256) {
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return _allowances[owner][spender];
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}
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function approve(address spender, uint256 amount) public virtual override returns(bool) {
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_approve(_msgSender(), spender, amount);
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return true;
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}
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function transferFrom(
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address sender,
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address recipient,
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uint256 amount
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) public virtual override returns(bool) {
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_transfer(sender, recipient, amount);
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_approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, "ERC20: transfer amount exceeds allowance"));
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return true;
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}
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function increaseAllowance(address spender, uint256 addedValue) public virtual returns(bool) {
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_approve(_msgSender(), spender, _allowances[_msgSender()][spender].add(addedValue));
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return true;
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}
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function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns(bool) {
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_approve(_msgSender(), spender, _allowances[_msgSender()][spender].sub(subtractedValue, "ERC20: decreased allowance below zero"));
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return true;
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}
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function _transfer(
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address sender,
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address recipient,
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uint256 amount
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) internal virtual {
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require(sender != address(0), "ERC20: transfer from the zero address");
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require(recipient != address(0), "ERC20: transfer to the zero address");
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_beforeTokenTransfer(sender, recipient, amount);
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_balances[sender] = _balances[sender].sub(amount, "ERC20: transfer amount exceeds balance");
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_balances[recipient] = _balances[recipient].add(amount);
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emit Transfer(sender, recipient, amount);
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}
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/** @dev Creates `amount` tokens and assigns them to `account`, increasing
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* the total supply.
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*
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* Emits a {Transfer} event with `from` set to the zero address.
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*
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* Requirements:
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*
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* - `account` cannot be the zero address.
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*/
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function _mint(address account, uint256 amount) internal virtual {
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require(account != address(0), "ERC20: mint to the zero address");
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_beforeTokenTransfer(address(0), account, amount);
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_totalSupply = _totalSupply.add(amount);
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_balances[account] = _balances[account].add(amount);
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emit Transfer(address(0), account, amount);
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}
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/**
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* @dev Destroys `amount` tokens from `account`, reducing the
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* total supply.
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*
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* Emits a {Transfer} event with `to` set to the zero address.
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*
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* Requirements:
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*
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* - `account` cannot be the zero address.
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* - `account` must have at least `amount` tokens.
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*/
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function _burn(address account, uint256 amount) internal virtual {
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require(account != address(0), "ERC20: burn from the zero address");
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_beforeTokenTransfer(account, address(0), amount);
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_balances[account] = _balances[account].sub(amount, "ERC20: burn amount exceeds balance");
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_totalSupply = _totalSupply.sub(amount);
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emit Transfer(account, address(0), amount);
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}
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/**
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* @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens.
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*
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* This internal function is equivalent to `approve`, and can be used to
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* e.g. set automatic allowances for certain subsystems, etc.
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*
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* Emits an {Approval} event.
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*
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* Requirements:
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*
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* - `owner` cannot be the zero address.
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* - `spender` cannot be the zero address.
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*/
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function _approve(
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address owner,
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address spender,
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uint256 amount
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) internal virtual {
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require(owner != address(0), "ERC20: approve from the zero address");
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require(spender != address(0), "ERC20: approve to the zero address");
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_allowances[owner][spender] = amount;
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emit Approval(owner, spender, amount);
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}
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/**
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* @dev Hook that is called before any transfer of tokens. This includes
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* minting and burning.
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*
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* Calling conditions:
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*
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* - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
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* will be to transferred to `to`.
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* - when `from` is zero, `amount` tokens will be minted for `to`.
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* - when `to` is zero, `amount` of ``from``'s tokens will be burned.
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* - `from` and `to` are never both zero.
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*
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* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
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*/
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function _beforeTokenTransfer(
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address from,
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address to,
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uint256 amount
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) internal virtual { }
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}
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library SafeMath {
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/**
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* @dev Returns the addition of two unsigned integers, reverting on
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* overflow.
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*
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* Counterpart to Solidity's `+` operator.
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*
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* Requirements:
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*
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* - Addition cannot overflow.
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*/
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function add(uint256 a, uint256 b) internal pure returns(uint256) {
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uint256 c = a + b;
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require(c >= a, "SafeMath: addition overflow");
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return c;
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}
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/**
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* @dev Returns the subtraction of two unsigned integers, reverting on
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* overflow (when the result is negative).
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*
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* Counterpart to Solidity's `-` operator.
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*
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* Requirements:
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*
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* - Subtraction cannot overflow.
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*/
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function sub(uint256 a, uint256 b) internal pure returns(uint256) {
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return sub(a, b, "SafeMath: subtraction overflow");
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}
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/**
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* @dev Returns the subtraction of two unsigned integers, reverting with custom message on
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* overflow (when the result is negative).
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*
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* Counterpart to Solidity's `-` operator.
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*
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* Requirements:
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*
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* - Subtraction cannot overflow.
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*/
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function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns(uint256) {
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require(b <= a, errorMessage);
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uint256 c = a - b;
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return c;
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}
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/**
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* @dev Returns the multiplication of two unsigned integers, reverting on
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* overflow.
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*
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* Counterpart to Solidity's `*` operator.
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*
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* Requirements:
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*
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* - Multiplication cannot overflow.
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*/
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function mul(uint256 a, uint256 b) internal pure returns(uint256) {
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// Gas optimization: this is cheaper than requiring 'a' not being zero, but the
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// benefit is lost if 'b' is also tested.
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// See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
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if (a == 0) {
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return 0;
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}
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uint256 c = a * b;
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require(c / a == b, "SafeMath: multiplication overflow");
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return c;
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}
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function div(uint256 a, uint256 b) internal pure returns(uint256) {
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return div(a, b, "SafeMath: division by zero");
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}
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function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns(uint256) {
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require(b > 0, errorMessage);
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uint256 c = a / b;
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// assert(a == b * c + a % b); // There is no case in which this doesn't hold
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return c;
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}
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function mod(uint256 a, uint256 b) internal pure returns(uint256) {
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return mod(a, b, "SafeMath: modulo by zero");
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}
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function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns(uint256) {
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require(b != 0, errorMessage);
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return a % b;
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}
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}
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contract Ownable is Context {
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address private _owner;
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event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
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constructor() {
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address msgSender = _msgSender();
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_owner = msgSender;
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emit OwnershipTransferred(address(0), msgSender);
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}
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function owner() public view returns(address) {
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return _owner;
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}
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modifier onlyOwner() {
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require(_owner == _msgSender(), "Ownable: caller is not the owner");
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_;
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}
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function renounceOwnership() public virtual onlyOwner {
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emit OwnershipTransferred(_owner, address(0));
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_owner = address(0);
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}
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function transferOwnership(address newOwner) public virtual onlyOwner {
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require(newOwner != address(0), "Ownable: new owner is the zero address");
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emit OwnershipTransferred(_owner, newOwner);
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_owner = newOwner;
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}
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}
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library SafeMathInt {
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int256 private constant MIN_INT256 = int256(1) << 255;
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int256 private constant MAX_INT256 = ~(int256(1) << 255);
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/**
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* @dev Multiplies two int256 variables and fails on overflow.
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*/
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function mul(int256 a, int256 b) internal pure returns(int256) {
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int256 c = a * b;
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// Detect overflow when multiplying MIN_INT256 with -1
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require(c != MIN_INT256 || (a & MIN_INT256) != (b & MIN_INT256));
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require((b == 0) || (c / b == a));
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return c;
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}
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/**
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* @dev Division of two int256 variables and fails on overflow.
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*/
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function div(int256 a, int256 b) internal pure returns(int256) {
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// Prevent overflow when dividing MIN_INT256 by -1
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require(b != -1 || a != MIN_INT256);
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// Solidity already throws when dividing by 0.
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return a / b;
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}
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/**
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* @dev Subtracts two int256 variables and fails on overflow.
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*/
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function sub(int256 a, int256 b) internal pure returns(int256) {
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int256 c = a - b;
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require((b >= 0 && c <= a) || (b < 0 && c > a));
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return c;
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}
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/**
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* @dev Adds two int256 variables and fails on overflow.
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*/
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function add(int256 a, int256 b) internal pure returns(int256) {
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int256 c = a + b;
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require((b >= 0 && c >= a) || (b < 0 && c < a));
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return c;
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}
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/**
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* @dev Converts to absolute value, and fails on overflow.
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*/
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function abs(int256 a) internal pure returns(int256) {
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require(a != MIN_INT256);
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return a < 0 ? -a : a;
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}
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function toUint256Safe(int256 a) internal pure returns(uint256) {
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require(a >= 0);
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return uint256(a);
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}
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}
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library SafeMathUint {
|
|
function toInt256Safe(uint256 a) internal pure returns(int256) {
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int256 b = int256(a);
|
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require(b >= 0);
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return b;
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}
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}
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interface IUniswapV2Router01 {
|
|
function factory() external pure returns(address);
|
|
function WETH() external pure returns(address);
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|
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function addLiquidity(
|
|
address tokenA,
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address tokenB,
|
|
uint amountADesired,
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uint amountBDesired,
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uint amountAMin,
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uint amountBMin,
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address to,
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uint deadline
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) external returns(uint amountA, uint amountB, uint liquidity);
|
|
function addLiquidityETH(
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address token,
|
|
uint amountTokenDesired,
|
|
uint amountTokenMin,
|
|
uint amountETHMin,
|
|
address to,
|
|
uint deadline
|
|
) external payable returns(uint amountToken, uint amountETH, uint liquidity);
|
|
function removeLiquidity(
|
|
address tokenA,
|
|
address tokenB,
|
|
uint liquidity,
|
|
uint amountAMin,
|
|
uint amountBMin,
|
|
address to,
|
|
uint deadline
|
|
) external returns(uint amountA, uint amountB);
|
|
function removeLiquidityETH(
|
|
address token,
|
|
uint liquidity,
|
|
uint amountTokenMin,
|
|
uint amountETHMin,
|
|
address to,
|
|
uint deadline
|
|
) external returns(uint amountToken, uint amountETH);
|
|
function removeLiquidityWithPermit(
|
|
address tokenA,
|
|
address tokenB,
|
|
uint liquidity,
|
|
uint amountAMin,
|
|
uint amountBMin,
|
|
address to,
|
|
uint deadline,
|
|
bool approveMax, uint8 v, bytes32 r, bytes32 s
|
|
) external returns(uint amountA, uint amountB);
|
|
function removeLiquidityETHWithPermit(
|
|
address token,
|
|
uint liquidity,
|
|
uint amountTokenMin,
|
|
uint amountETHMin,
|
|
address to,
|
|
uint deadline,
|
|
bool approveMax, uint8 v, bytes32 r, bytes32 s
|
|
) external returns(uint amountToken, uint amountETH);
|
|
function swapExactTokensForTokens(
|
|
uint amountIn,
|
|
uint amountOutMin,
|
|
address[] calldata path,
|
|
address to,
|
|
uint deadline
|
|
) external returns(uint[] memory amounts);
|
|
function swapTokensForExactTokens(
|
|
uint amountOut,
|
|
uint amountInMax,
|
|
address[] calldata path,
|
|
address to,
|
|
uint deadline
|
|
) external returns(uint[] memory amounts);
|
|
function swapExactETHForTokens(uint amountOutMin, address[] calldata path, address to, uint deadline)
|
|
external
|
|
payable
|
|
returns(uint[] memory amounts);
|
|
function swapTokensForExactETH(uint amountOut, uint amountInMax, address[] calldata path, address to, uint deadline)
|
|
external
|
|
returns(uint[] memory amounts);
|
|
function swapExactTokensForETH(uint amountIn, uint amountOutMin, address[] calldata path, address to, uint deadline)
|
|
external
|
|
returns(uint[] memory amounts);
|
|
function swapETHForExactTokens(uint amountOut, address[] calldata path, address to, uint deadline)
|
|
external
|
|
payable
|
|
returns(uint[] memory amounts);
|
|
|
|
function quote(uint amountA, uint reserveA, uint reserveB) external pure returns(uint amountB);
|
|
function getAmountOut(uint amountIn, uint reserveIn, uint reserveOut) external pure returns(uint amountOut);
|
|
function getAmountIn(uint amountOut, uint reserveIn, uint reserveOut) external pure returns(uint amountIn);
|
|
function getAmountsOut(uint amountIn, address[] calldata path) external view returns(uint[] memory amounts);
|
|
function getAmountsIn(uint amountOut, address[] calldata path) external view returns(uint[] memory amounts);
|
|
}
|
|
|
|
interface IUniswapV2Router02 is IUniswapV2Router01 {
|
|
function removeLiquidityETHSupportingFeeOnTransferTokens(
|
|
address token,
|
|
uint liquidity,
|
|
uint amountTokenMin,
|
|
uint amountETHMin,
|
|
address to,
|
|
uint deadline
|
|
) external returns(uint amountETH);
|
|
function removeLiquidityETHWithPermitSupportingFeeOnTransferTokens(
|
|
address token,
|
|
uint liquidity,
|
|
uint amountTokenMin,
|
|
uint amountETHMin,
|
|
address to,
|
|
uint deadline,
|
|
bool approveMax, uint8 v, bytes32 r, bytes32 s
|
|
) external returns(uint amountETH);
|
|
|
|
function swapExactTokensForTokensSupportingFeeOnTransferTokens(
|
|
uint amountIn,
|
|
uint amountOutMin,
|
|
address[] calldata path,
|
|
address to,
|
|
uint deadline
|
|
) external;
|
|
function swapExactETHForTokensSupportingFeeOnTransferTokens(
|
|
uint amountOutMin,
|
|
address[] calldata path,
|
|
address to,
|
|
uint deadline
|
|
) external payable;
|
|
function swapExactTokensForETHSupportingFeeOnTransferTokens(
|
|
uint amountIn,
|
|
uint amountOutMin,
|
|
address[] calldata path,
|
|
address to,
|
|
uint deadline
|
|
) external;
|
|
}
|
|
|
|
contract Elizabeth96 is ERC20, Ownable {
|
|
using SafeMath for uint256;
|
|
|
|
IUniswapV2Router02 public immutable uniswapV2Router;
|
|
address public immutable uniswapV2Pair;
|
|
|
|
|
|
// addresses
|
|
address private burnWallet;
|
|
|
|
// limits
|
|
uint256 private maxTransactionBuyAmount;
|
|
uint256 private maxTransactionSellAmount;
|
|
uint256 private maxWallet;
|
|
|
|
uint256 private swapTokensAtAmount;
|
|
|
|
// status flags
|
|
bool private tradingActive = false;
|
|
bool public swapEnabled = false;
|
|
bool public swapping;
|
|
|
|
|
|
// Blacklist Map
|
|
mapping(address => bool) private _blacklist;
|
|
|
|
|
|
struct Fees {
|
|
uint256 buyTotalFees;
|
|
uint256 buyBurnFee;
|
|
uint256 buyLiquidityFee;
|
|
|
|
uint256 sellTotalFees;
|
|
uint256 sellBurnFee;
|
|
uint256 sellLiquidityFee;
|
|
}
|
|
|
|
Fees public _fees = Fees({
|
|
buyTotalFees: 0,
|
|
buyBurnFee: 0,
|
|
buyLiquidityFee: 0,
|
|
|
|
sellTotalFees: 0,
|
|
sellBurnFee: 0,
|
|
sellLiquidityFee: 0
|
|
});
|
|
|
|
|
|
|
|
uint256 public tokensForBurn;
|
|
uint256 public tokensForLiquidity;
|
|
|
|
|
|
// exclude from fees and max transaction amount
|
|
mapping(address => bool) private _isExcludedFromFees;
|
|
mapping(address => bool) public _isExcludedMaxTransactionAmount;
|
|
mapping(address => bool) public _isExcludedMaxWalletAmount;
|
|
|
|
// store addresses that a automatic market maker pairs. Any transfer *to* these addresses
|
|
// could be subject to a maximum transfer amount
|
|
mapping(address => bool) public automatedMarketMakerPairs;
|
|
|
|
|
|
event SwapAndLiquify(
|
|
uint256 tokensSwapped,
|
|
uint256 ethReceived,
|
|
uint256 tokensIntoLiquidity
|
|
);
|
|
|
|
|
|
constructor() ERC20("ELIZABETH96", "KWEEN96") {
|
|
|
|
IUniswapV2Router02 _uniswapV2Router = IUniswapV2Router02(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);
|
|
|
|
excludeFromMaxTransaction(address(_uniswapV2Router), true);
|
|
uniswapV2Router = _uniswapV2Router;
|
|
|
|
uniswapV2Pair = IUniswapV2Factory(_uniswapV2Router.factory()).createPair(address(this), _uniswapV2Router.WETH());
|
|
excludeFromMaxTransaction(address(uniswapV2Pair), true);
|
|
automatedMarketMakerPairs[address(uniswapV2Pair)] = true;
|
|
|
|
approve(address(_uniswapV2Router), type(uint256).max);
|
|
uint256 totalSupply = 1 * 1e7 * 1e18;
|
|
|
|
maxTransactionBuyAmount = (totalSupply * 2) / 100; // 2% Max TX
|
|
maxTransactionSellAmount = (totalSupply * 2) / 100; // 2% Max TX
|
|
maxWallet = totalSupply * 3 / 100; // 2% maxWallet
|
|
swapTokensAtAmount = totalSupply * 1 / 10000; // 0.01% swap wallet
|
|
|
|
_fees.buyBurnFee = 3;
|
|
_fees.buyLiquidityFee = 1;
|
|
_fees.buyTotalFees = _fees.buyBurnFee + _fees.buyLiquidityFee;
|
|
|
|
_fees.sellBurnFee = 3;
|
|
_fees.sellLiquidityFee = 1;
|
|
_fees.sellTotalFees = _fees.sellBurnFee + _fees.sellLiquidityFee;
|
|
|
|
|
|
burnWallet = address(0xCB154DbB662E59a64FACA7c6F7c167A9232F0c5a); //
|
|
|
|
// exclude from paying fees or having max transaction amount
|
|
excludeFromFees(owner(), true);
|
|
excludeFromFees(address(this), true);
|
|
|
|
excludeFromMaxTransaction(owner(), true);
|
|
excludeFromMaxTransaction(address(this), true);
|
|
|
|
excludeFromWalletLimit(owner(), true);
|
|
excludeFromWalletLimit(address(this), true);
|
|
excludeFromWalletLimit(address(uniswapV2Pair), true);
|
|
|
|
/*
|
|
_mint is an internal function in ERC20.sol that is only called here,
|
|
and CANNOT be called ever again
|
|
*/
|
|
_mint(msg.sender, totalSupply);
|
|
}
|
|
|
|
receive() external payable {
|
|
|
|
}
|
|
|
|
|
|
function enableTrading() external onlyOwner {
|
|
tradingActive = true;
|
|
swapEnabled = true;
|
|
}
|
|
|
|
function updateSwapTokensAtAmount(uint256 newAmount) external onlyOwner returns(bool){
|
|
swapTokensAtAmount = newAmount;
|
|
return true;
|
|
}
|
|
|
|
|
|
function updateMaxTxnAmount(uint256 newMaxBuyAmount, uint256 newMaxSellAmount) external onlyOwner {
|
|
require(((totalSupply() * newMaxBuyAmount) / 1000) >= (totalSupply() / 5000), "Cannot set lower than 0.5%");
|
|
require(((totalSupply() * newMaxSellAmount) / 1000) >= (totalSupply() / 5000), "Cannot set lower than 0.5%");
|
|
maxTransactionBuyAmount = (totalSupply() * newMaxBuyAmount) / 1000;
|
|
maxTransactionSellAmount = (totalSupply() * newMaxSellAmount) / 1000;
|
|
}
|
|
|
|
|
|
function updateMaxWalletAmount(uint256 newPercentage) external onlyOwner {
|
|
require(((totalSupply() * newPercentage) / 1000) >= (totalSupply() / 5000), "Cannot set lower than 0.5%");
|
|
maxWallet = (totalSupply() * newPercentage) / 1000;
|
|
}
|
|
|
|
|
|
function updateSwapEnabled(bool enabled) external onlyOwner(){
|
|
swapEnabled = enabled;
|
|
}
|
|
|
|
function updateBuyFees(uint256 _burnFee, uint256 _liquidityFee) external onlyOwner {
|
|
_fees.buyBurnFee = _burnFee;
|
|
_fees.buyLiquidityFee = _liquidityFee;
|
|
_fees.buyTotalFees = _fees.buyBurnFee + _fees.buyLiquidityFee;
|
|
require(_fees.buyTotalFees <= 5, "Immutable");
|
|
}
|
|
|
|
function updateSellFees(uint256 _burnFee, uint256 _liquidityFee) external onlyOwner {
|
|
_fees.sellBurnFee = _burnFee;
|
|
_fees.sellLiquidityFee = _liquidityFee;
|
|
_fees.sellTotalFees = _fees.sellBurnFee + _fees.sellLiquidityFee;
|
|
require(_fees.sellTotalFees <= 5, "Immutable");
|
|
}
|
|
|
|
|
|
function excludeFromFees(address account, bool excluded) public onlyOwner {
|
|
_isExcludedFromFees[account] = excluded;
|
|
}
|
|
function excludeFromWalletLimit(address account, bool excluded) public onlyOwner {
|
|
_isExcludedMaxWalletAmount[account] = excluded;
|
|
}
|
|
function excludeFromMaxTransaction(address updAds, bool isEx) public onlyOwner {
|
|
_isExcludedMaxTransactionAmount[updAds] = isEx;
|
|
}
|
|
|
|
|
|
function setAutomatedMarketMakerPair(address pair, bool value) public onlyOwner {
|
|
require(pair != uniswapV2Pair, "The pair cannot be removed from automatedMarketMakerPairs");
|
|
automatedMarketMakerPairs[pair] = value;
|
|
}
|
|
|
|
|
|
function updateWallets(address newBurnWallet) external onlyOwner{
|
|
burnWallet = newBurnWallet;
|
|
}
|
|
|
|
function isExcludedFromFees(address account) public view returns(bool) {
|
|
return _isExcludedFromFees[account];
|
|
}
|
|
|
|
function _transfer(
|
|
address from,
|
|
address to,
|
|
uint256 amount
|
|
) internal override {
|
|
require(from != address(0), "ERC20: transfer from the zero address");
|
|
require(to != address(0), "ERC20: transfer to the zero address");
|
|
require(from != address(0xdEaD), "ERC20: transfer from the dEaD address");
|
|
require(to != address(0xdEaD), "ERC20: transfer to the dEaD address");
|
|
require(!_blacklist[to] && !_blacklist[from], "You have been blacklisted from transfering tokens");
|
|
|
|
if (amount == 0) {
|
|
super._transfer(from, to, 0);
|
|
return;
|
|
}
|
|
|
|
if (
|
|
from != owner() &&
|
|
to != owner() &&
|
|
!swapping
|
|
) {
|
|
if (!tradingActive) {
|
|
require(_isExcludedFromFees[from] || _isExcludedFromFees[to], "Trading is not active.");
|
|
}
|
|
|
|
//when buy
|
|
if (automatedMarketMakerPairs[from] && !_isExcludedMaxTransactionAmount[to]) {
|
|
require(amount <= maxTransactionBuyAmount, "Buy transfer amount exceeds the maxTransactionAmount.");
|
|
}
|
|
|
|
//when sell
|
|
else if (automatedMarketMakerPairs[to] && !_isExcludedMaxTransactionAmount[from]) {
|
|
require(amount <= maxTransactionSellAmount, "Sell transfer amount exceeds the maxTransactionAmount.");
|
|
}
|
|
if (!_isExcludedMaxWalletAmount[to]) {
|
|
require(amount + balanceOf(to) <= maxWallet, "Max wallet exceeded");
|
|
}
|
|
}
|
|
|
|
|
|
|
|
uint256 contractTokenBalance = balanceOf(address(this));
|
|
|
|
bool canSwap = contractTokenBalance >= swapTokensAtAmount;
|
|
|
|
if (
|
|
canSwap &&
|
|
swapEnabled &&
|
|
!swapping &&
|
|
automatedMarketMakerPairs[to] &&
|
|
!_isExcludedFromFees[from] &&
|
|
!_isExcludedFromFees[to]
|
|
) {
|
|
swapping = true;
|
|
|
|
swapBack();
|
|
|
|
swapping = false;
|
|
}
|
|
|
|
bool takeFee = !swapping;
|
|
|
|
// if any account belongs to _isExcludedFromFee account then remove the fee
|
|
if (_isExcludedFromFees[from] || _isExcludedFromFees[to]) {
|
|
takeFee = false;
|
|
}
|
|
|
|
uint256 fees = 0;
|
|
// only take fees on buys/sells, do not take on wallet transfers
|
|
if (takeFee) {
|
|
|
|
// on sell
|
|
if (automatedMarketMakerPairs[to] && _fees.sellTotalFees > 0) {
|
|
fees = amount.mul(_fees.sellTotalFees).div(100);
|
|
tokensForLiquidity += fees * _fees.sellLiquidityFee / _fees.sellTotalFees;
|
|
tokensForBurn += fees * _fees.sellBurnFee / _fees.sellTotalFees;
|
|
}
|
|
// on buy
|
|
else if (automatedMarketMakerPairs[from] && _fees.buyTotalFees > 0) {
|
|
fees = amount.mul(_fees.buyTotalFees).div(100);
|
|
tokensForLiquidity += fees * _fees.buyLiquidityFee / _fees.buyTotalFees;
|
|
tokensForBurn += fees * _fees.buyBurnFee / _fees.buyTotalFees;
|
|
}
|
|
|
|
if (fees > 0) {
|
|
super._transfer(from, address(this), fees);
|
|
}
|
|
|
|
amount -= fees;
|
|
|
|
}
|
|
|
|
super._transfer(from, to, amount);
|
|
}
|
|
|
|
function swapTokensForEth(uint256 tokenAmount) private {
|
|
|
|
// generate the uniswap pair path of token -> weth
|
|
address[] memory path = new address[](2);
|
|
path[0] = address(this);
|
|
path[1] = uniswapV2Router.WETH();
|
|
|
|
_approve(address(this), address(uniswapV2Router), tokenAmount);
|
|
|
|
// make the swap
|
|
uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(
|
|
tokenAmount,
|
|
0, // accept any amount of ETH
|
|
path,
|
|
address(this),
|
|
block.timestamp
|
|
);
|
|
|
|
}
|
|
|
|
function addLiquidity(uint256 tokenAmount, uint256 ethAmount) private {
|
|
// approve token transfer to cover all possible scenarios
|
|
_approve(address(this), address(uniswapV2Router), tokenAmount);
|
|
|
|
// add the liquidity
|
|
uniswapV2Router.addLiquidityETH{ value: ethAmount } (
|
|
address(this),
|
|
tokenAmount,
|
|
0, // slippage is unavoidable
|
|
0, // slippage is unavoidable
|
|
address(this),
|
|
block.timestamp
|
|
);
|
|
}
|
|
|
|
function swapBack() private {
|
|
uint256 contractBalance = balanceOf(address(this));
|
|
uint256 totalTokensToSwap = tokensForLiquidity + tokensForBurn ;
|
|
bool success;
|
|
|
|
if (contractBalance == 0 || totalTokensToSwap == 0) { return; }
|
|
|
|
if (contractBalance > swapTokensAtAmount * 20) {
|
|
contractBalance = swapTokensAtAmount * 20;
|
|
}
|
|
|
|
// Halve the amount of liquidity tokens
|
|
uint256 liquidityTokens = contractBalance * tokensForLiquidity / totalTokensToSwap / 2;
|
|
uint256 amountToSwapForETH = contractBalance.sub(liquidityTokens);
|
|
|
|
uint256 initialETHBalance = address(this).balance;
|
|
|
|
swapTokensForEth(amountToSwapForETH);
|
|
|
|
uint256 ethBalance = address(this).balance.sub(initialETHBalance);
|
|
|
|
uint256 ethForBurn = ethBalance.mul(tokensForBurn).div(totalTokensToSwap);
|
|
uint256 ethForLiquidity = ethBalance - ethForBurn;
|
|
|
|
|
|
tokensForLiquidity = 0;
|
|
tokensForBurn = 0;
|
|
|
|
|
|
if (liquidityTokens > 0 && ethForLiquidity > 0) {
|
|
addLiquidity(liquidityTokens, ethForLiquidity);
|
|
emit SwapAndLiquify(amountToSwapForETH, ethForLiquidity, tokensForLiquidity);
|
|
}
|
|
|
|
(success,) = address(burnWallet).call{ value: address(this).balance } ("");
|
|
}
|
|
|
|
} |