Contract Source Code:
pragma solidity ^0.8.4;
import "@openzeppelin/contracts/token/ERC20/ERC20.sol";
import "@openzeppelin/contracts/access/Ownable.sol";
import "@uniswap/v2-periphery/contracts/interfaces/IUniswapV2Router02.sol";
import "@openzeppelin/contracts/utils/math/SafeMath.sol";
interface IUniswapV2Factory {
function createPair(address tokenA, address tokenB)
external
returns (address pair);
}
contract Mishka2 is Context, ERC20, Ownable {
using SafeMath for uint256;
// ##### Constant Value ######
uint256 private constant TOTAL_SUPPLY = 1000000000 * 10**18;
address private constant MISHKA1 =
0x976091738973b520A514ea206AcDD008A09649De;
// ##### Tokenomic Private Value ####
uint256 private m_ClaimRate = 1100; // unit 1 / 10**6 ;
bool private m_ClaimEnabled = true;
address private m_ClaimWallet;
uint256 private m_SellFeePercent = 10; // 10% Sell Fee.
uint256 private m_BuyFeePercent = 0; // 0% Buy Fee.
uint256 private m_BuyBonusPercent = 0; // 0% Buy Bonus.
address payable private m_FeeWallet; // FeeWalletAddress.
bool private m_IsSwap = false;
mapping(address => bool) private m_IgnoreFeeList;
mapping(address => bool) private m_DevWalletList;
mapping(address => bool) private m_WhiteList;
mapping(address => bool) private m_BlackList;
bool private m_PublicTradingOpened = false;
uint256 private m_TxLimit = 5000000 * 10**18; // 0.5% of total supply
uint256 private m_MaxWalletSize = 1000000000 * 10**18; // 100% of total supply
uint256 private m_NumOfTokensForDisperse = 5000 * 10**18; // Exchange to Eth Limit - 5 Mil
address private m_UniswapV2Pair;
IUniswapV2Router02 private m_UniswapV2Router;
bool private m_SwapEnabled = false;
///////////////////////////////////////
receive() external payable {}
modifier lockTheSwap() {
m_IsSwap = true;
_;
m_IsSwap = false;
}
modifier transferable(
address _sender,
address _recipient,
uint256 _amount
) {
if (!m_WhiteList[_sender] && !m_WhiteList[_recipient]) {
require(m_PublicTradingOpened, "Not enabled transfer.");
}
require(!m_BlackList[_sender], "You are in block list.");
require(!m_BlackList[_recipient], "You are in block list.");
if (
(_sender == m_UniswapV2Pair &&
!m_DevWalletList[_recipient] &&
_recipient != address(m_UniswapV2Router)) ||
(_recipient == m_UniswapV2Pair &&
!m_DevWalletList[_sender] &&
_sender != address(m_UniswapV2Router))
) require(_amount <= m_TxLimit, "Amount is bigg too.");
_;
if (
!m_DevWalletList[_recipient] &&
_recipient != m_UniswapV2Pair &&
_recipient != address(m_UniswapV2Router)
)
require(
ERC20.balanceOf(_recipient) <= m_MaxWalletSize,
"The balance is big too"
);
}
constructor() ERC20("Mishka Token", "MSK") {
m_WhiteList[owner()] = true;
m_WhiteList[address(this)] = true;
m_DevWalletList[address(this)] = true;
m_DevWalletList[owner()] = true;
m_IgnoreFeeList[address(this)] = true;
m_ClaimWallet = address(this);
_mint(address(this), TOTAL_SUPPLY);
}
// ##### Transfer Feature #####
function setPublicTradingOpened(bool _enabled) external onlyOwner {
m_PublicTradingOpened = _enabled;
}
function isPublicTradingOpened() external view returns (bool) {
return m_PublicTradingOpened;
}
function setWhiteList(address _address) public onlyOwner {
m_WhiteList[_address] = true;
}
function setWhiteListMultiple(address[] memory _addresses)
public
onlyOwner
{
for (uint256 i = 0; i < _addresses.length; i++) {
setWhiteList(_addresses[i]);
}
}
function removeWhiteList(address _address) external onlyOwner {
m_WhiteList[_address] = false;
}
function isWhiteListed(address _address) external view returns (bool) {
return m_WhiteList[_address];
}
function setBlackList(address _address) public onlyOwner {
m_BlackList[_address] = true;
}
function setBlackListMultiple(address[] memory _addresses)
public
onlyOwner
{
for (uint256 i = 0; i < _addresses.length; i++) {
setBlackList(_addresses[i]);
}
}
function removeBlackList(address _address) external onlyOwner {
m_BlackList[_address] = false;
}
function isBlackListed(address _address) external view returns (bool) {
return m_BlackList[_address];
}
function setDevWallet(address _address) external onlyOwner {
m_DevWalletList[_address] = true;
}
function removeDevWallet(address _address) external onlyOwner {
m_DevWalletList[_address] = false;
}
function isDevWallet(address _address) external view returns (bool) {
return m_DevWalletList[_address];
}
function setTxLimitToken(uint256 _txLimit) external onlyOwner {
m_TxLimit = _txLimit.mul(10**18);
}
function getTxLimitToken() external view returns (uint256) {
return m_TxLimit.div(10**18);
}
function setMaxWalletSizeToken(uint256 _maxWalletSize) external onlyOwner {
m_MaxWalletSize = _maxWalletSize.mul(10**18);
}
function getMaxWalletSizeToken() external view returns (uint256) {
return m_MaxWalletSize.div(10**18);
}
function transfer(address _recipient, uint256 _amount)
public
override
transferable(_msgSender(), _recipient, _amount)
returns (bool)
{
uint256 realAmount = _feeProcess(_msgSender(), _recipient, _amount);
_transfer(_msgSender(), _recipient, realAmount);
return true;
}
function transferFrom(
address _sender,
address _recipient,
uint256 _amount
)
public
override
transferable(_sender, _recipient, _amount)
returns (bool)
{
uint256 realAmount = _feeProcess(_sender, _recipient, _amount);
_transfer(_sender, _recipient, realAmount);
_approve(
_sender,
_msgSender(),
allowance(_sender, _msgSender()).sub(
_amount,
"ERC20: transfer amount exceeds allowance"
)
);
return true;
}
// ###### Claim Feature ######
function setClaimRate(uint256 _rate) external onlyOwner {
m_ClaimRate = _rate;
}
function getClaimRate() external view returns (uint256) {
return m_ClaimRate;
}
function setClaimEnabled(bool _enabled) external onlyOwner {
m_ClaimEnabled = _enabled;
}
function getClaimEnabled() external view returns (bool) {
return m_ClaimEnabled;
}
function setClaimWallet(address _claimWallet) external onlyOwner {
m_ClaimWallet = _claimWallet;
m_IgnoreFeeList[_claimWallet] = true;
m_WhiteList[_claimWallet] = true;
}
function getClaimWallet() external view returns (address) {
return m_ClaimWallet;
}
function claimV2() external {
require(m_ClaimEnabled, "Claim is not enabled");
IERC20 mishkaV1 = IERC20(MISHKA1);
uint256 v1Amount = mishkaV1.balanceOf(_msgSender());
if (v1Amount == 0) return;
uint256 claimAmount = v1Amount.mul(m_ClaimRate.mul(10**3));
require(
claimAmount <= ERC20.balanceOf(m_ClaimWallet),
"Claim Wallet balance is not enough"
);
mishkaV1.transferFrom(_msgSender(), address(this), v1Amount);
_transfer(m_ClaimWallet, _msgSender(), claimAmount);
}
// ###### Liquidity Feature ######
function addLiquidity() external onlyOwner {
require(!m_SwapEnabled, "Liquidity pool already created");
uint256 ethAmount = address(this).balance;
uint256 v2Amount = balanceOf(address(this));
require(ethAmount > 0, "Ethereum balance is empty");
require(v2Amount > 0, "Mishka balance is empty");
IUniswapV2Router02 _uniswapV2Router = IUniswapV2Router02(
0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D
);
m_UniswapV2Router = _uniswapV2Router;
m_WhiteList[address(m_UniswapV2Router)] = true;
_approve(address(this), address(m_UniswapV2Router), v2Amount);
m_UniswapV2Pair = IUniswapV2Factory(_uniswapV2Router.factory())
.createPair(address(this), _uniswapV2Router.WETH());
// m_WhiteList[m_UniswapV2Pair] = true;
m_UniswapV2Router.addLiquidityETH{value: ethAmount}(
address(this),
v2Amount,
0,
0,
owner(),
block.timestamp
);
m_SwapEnabled = true;
IERC20(m_UniswapV2Pair).approve(
address(m_UniswapV2Router),
type(uint256).max
);
}
// ##### Fee Feature ######
function setSellFeePercent(uint256 _sellFeePercent) external onlyOwner {
m_SellFeePercent = _sellFeePercent;
}
function getSellFeePercent() external view returns (uint256) {
return m_SellFeePercent;
}
function setBuyFeePercent(uint256 _buyFeePercent) external onlyOwner {
m_BuyFeePercent = _buyFeePercent;
}
function getBuyFeePercent() external view returns (uint256) {
return m_BuyFeePercent;
}
function setBuyBonusPercent(uint256 _buyBonusPercent) external onlyOwner {
m_BuyBonusPercent = _buyBonusPercent;
}
function getBuyBonusPercent() external view returns (uint256) {
return m_BuyBonusPercent;
}
function setFeeWallet(address payable _feeWallet) external onlyOwner {
m_FeeWallet = _feeWallet;
}
function getFeeWallet() external view returns (address payable) {
return m_FeeWallet;
}
function setIgnoreFeeAddress(address _address) external onlyOwner {
m_IgnoreFeeList[_address] = true;
}
function removeIgnoreFeeAddress(address _address) external onlyOwner {
m_IgnoreFeeList[_address] = false;
}
function isIgnoreFeeAddress(address _address) external view returns (bool) {
return m_IgnoreFeeList[_address];
}
function setNumOfTokensForDisperse(uint256 _numOfTokensForDisperse)
external
onlyOwner
{
m_NumOfTokensForDisperse = _numOfTokensForDisperse.mul(10**18);
}
function getNumOfTokensForDisperse() external view returns (uint256) {
return m_NumOfTokensForDisperse.div(10**18);
}
function _isBuy(address _sender, address _recipient)
private
view
returns (bool)
{
return
_sender == m_UniswapV2Pair &&
_recipient != address(m_UniswapV2Router) &&
!m_IgnoreFeeList[_recipient];
}
function _isSale(address _sender, address _recipient)
private
view
returns (bool)
{
return
_recipient == m_UniswapV2Pair &&
_sender != address(m_UniswapV2Router) &&
!m_IgnoreFeeList[_sender];
}
function _swapTokensForETH(uint256 _amount) private lockTheSwap {
address[] memory _path = new address[](2);
_path[0] = address(this);
_path[1] = m_UniswapV2Router.WETH();
_approve(address(this), address(m_UniswapV2Router), _amount);
m_UniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(
_amount,
0,
_path,
address(this),
block.timestamp
);
}
function _readyToSwap() private view returns (bool) {
return !m_IsSwap && m_SwapEnabled;
}
function _payToll() private {
uint256 _tokenBalance = balanceOf(address(this));
bool overMinTokenBalanceForDisperseEth = _tokenBalance >=
m_NumOfTokensForDisperse;
if (_readyToSwap() && overMinTokenBalanceForDisperseEth) {
_swapTokensForETH(_tokenBalance);
if (m_FeeWallet != address(0) && m_FeeWallet != address(this))
m_FeeWallet.transfer(address(this).balance);
}
}
function _feeProcess(
address _sender,
address _recipient,
uint256 _amount
) private returns (uint256) {
uint256 fee = 0;
uint256 bonus = 0;
bool isSale = _isSale(_sender, _recipient);
bool isBuy = _isBuy(_sender, _recipient);
if (isSale) fee = m_SellFeePercent;
else if (isBuy) {
fee = m_BuyFeePercent;
bonus = m_BuyBonusPercent;
}
uint256 feeAmount = _amount.mul(fee).div(100);
uint256 bonusAmount = _amount.mul(bonus).div(100);
if (feeAmount != 0) _transfer(_sender, address(this), feeAmount);
if (bonusAmount != 0) _transfer(m_ClaimWallet, _recipient, bonusAmount);
if (isSale) _payToll();
return _amount.sub(feeAmount);
}
// ##### Other Functions ######
function withdrawV1() external onlyOwner {
IERC20 mishkaV1 = IERC20(MISHKA1);
mishkaV1.transfer(owner(), mishkaV1.balanceOf(address(this)));
}
function withdraw(uint256 _amount) external onlyOwner {
_transfer(address(this), owner(), _amount.mul(10**18));
}
function transferOwnership(address _newOwner) public override onlyOwner {
m_WhiteList[owner()] = false;
m_IgnoreFeeList[owner()] = false;
m_DevWalletList[owner()] = false;
Ownable.transferOwnership(_newOwner);
m_WhiteList[_newOwner] = true;
m_DevWalletList[_newOwner] = true;
m_IgnoreFeeList[_newOwner] = true;
}
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
import "./IERC20.sol";
import "./extensions/IERC20Metadata.sol";
import "../../utils/Context.sol";
/**
* @dev Implementation of the {IERC20} interface.
*
* This implementation is agnostic to the way tokens are created. This means
* that a supply mechanism has to be added in a derived contract using {_mint}.
* For a generic mechanism see {ERC20PresetMinterPauser}.
*
* TIP: For a detailed writeup see our guide
* https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How
* to implement supply mechanisms].
*
* We have followed general OpenZeppelin Contracts guidelines: functions revert
* instead returning `false` on failure. This behavior is nonetheless
* conventional and does not conflict with the expectations of ERC20
* applications.
*
* Additionally, an {Approval} event is emitted on calls to {transferFrom}.
* This allows applications to reconstruct the allowance for all accounts just
* by listening to said events. Other implementations of the EIP may not emit
* these events, as it isn't required by the specification.
*
* Finally, the non-standard {decreaseAllowance} and {increaseAllowance}
* functions have been added to mitigate the well-known issues around setting
* allowances. See {IERC20-approve}.
*/
contract ERC20 is Context, IERC20, IERC20Metadata {
mapping(address => uint256) private _balances;
mapping(address => mapping(address => uint256)) private _allowances;
uint256 private _totalSupply;
string private _name;
string private _symbol;
/**
* @dev Sets the values for {name} and {symbol}.
*
* The default value of {decimals} is 18. To select a different value for
* {decimals} you should overload it.
*
* All two of these values are immutable: they can only be set once during
* construction.
*/
constructor(string memory name_, string memory symbol_) {
_name = name_;
_symbol = symbol_;
}
/**
* @dev Returns the name of the token.
*/
function name() public view virtual override returns (string memory) {
return _name;
}
/**
* @dev Returns the symbol of the token, usually a shorter version of the
* name.
*/
function symbol() public view virtual override returns (string memory) {
return _symbol;
}
/**
* @dev Returns the number of decimals used to get its user representation.
* For example, if `decimals` equals `2`, a balance of `505` tokens should
* be displayed to a user as `5.05` (`505 / 10 ** 2`).
*
* Tokens usually opt for a value of 18, imitating the relationship between
* Ether and Wei. This is the value {ERC20} uses, unless this function is
* overridden;
*
* NOTE: This information is only used for _display_ purposes: it in
* no way affects any of the arithmetic of the contract, including
* {IERC20-balanceOf} and {IERC20-transfer}.
*/
function decimals() public view virtual override returns (uint8) {
return 18;
}
/**
* @dev See {IERC20-totalSupply}.
*/
function totalSupply() public view virtual override returns (uint256) {
return _totalSupply;
}
/**
* @dev See {IERC20-balanceOf}.
*/
function balanceOf(address account) public view virtual override returns (uint256) {
return _balances[account];
}
/**
* @dev See {IERC20-transfer}.
*
* Requirements:
*
* - `recipient` cannot be the zero address.
* - the caller must have a balance of at least `amount`.
*/
function transfer(address recipient, uint256 amount) public virtual override returns (bool) {
_transfer(_msgSender(), recipient, amount);
return true;
}
/**
* @dev See {IERC20-allowance}.
*/
function allowance(address owner, address spender) public view virtual override returns (uint256) {
return _allowances[owner][spender];
}
/**
* @dev See {IERC20-approve}.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function approve(address spender, uint256 amount) public virtual override returns (bool) {
_approve(_msgSender(), spender, amount);
return true;
}
/**
* @dev See {IERC20-transferFrom}.
*
* Emits an {Approval} event indicating the updated allowance. This is not
* required by the EIP. See the note at the beginning of {ERC20}.
*
* Requirements:
*
* - `sender` and `recipient` cannot be the zero address.
* - `sender` must have a balance of at least `amount`.
* - the caller must have allowance for ``sender``'s tokens of at least
* `amount`.
*/
function transferFrom(
address sender,
address recipient,
uint256 amount
) public virtual override returns (bool) {
_transfer(sender, recipient, amount);
uint256 currentAllowance = _allowances[sender][_msgSender()];
require(currentAllowance >= amount, "ERC20: transfer amount exceeds allowance");
unchecked {
_approve(sender, _msgSender(), currentAllowance - amount);
}
return true;
}
/**
* @dev Atomically increases the allowance granted to `spender` by the caller.
*
* This is an alternative to {approve} that can be used as a mitigation for
* problems described in {IERC20-approve}.
*
* Emits an {Approval} event indicating the updated allowance.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
_approve(_msgSender(), spender, _allowances[_msgSender()][spender] + addedValue);
return true;
}
/**
* @dev Atomically decreases the allowance granted to `spender` by the caller.
*
* This is an alternative to {approve} that can be used as a mitigation for
* problems described in {IERC20-approve}.
*
* Emits an {Approval} event indicating the updated allowance.
*
* Requirements:
*
* - `spender` cannot be the zero address.
* - `spender` must have allowance for the caller of at least
* `subtractedValue`.
*/
function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {
uint256 currentAllowance = _allowances[_msgSender()][spender];
require(currentAllowance >= subtractedValue, "ERC20: decreased allowance below zero");
unchecked {
_approve(_msgSender(), spender, currentAllowance - subtractedValue);
}
return true;
}
/**
* @dev Moves `amount` of tokens from `sender` to `recipient`.
*
* This internal function is equivalent to {transfer}, and can be used to
* e.g. implement automatic token fees, slashing mechanisms, etc.
*
* Emits a {Transfer} event.
*
* Requirements:
*
* - `sender` cannot be the zero address.
* - `recipient` cannot be the zero address.
* - `sender` must have a balance of at least `amount`.
*/
function _transfer(
address sender,
address recipient,
uint256 amount
) internal virtual {
require(sender != address(0), "ERC20: transfer from the zero address");
require(recipient != address(0), "ERC20: transfer to the zero address");
_beforeTokenTransfer(sender, recipient, amount);
uint256 senderBalance = _balances[sender];
require(senderBalance >= amount, "ERC20: transfer amount exceeds balance");
unchecked {
_balances[sender] = senderBalance - amount;
}
_balances[recipient] += amount;
emit Transfer(sender, recipient, amount);
_afterTokenTransfer(sender, recipient, amount);
}
/** @dev Creates `amount` tokens and assigns them to `account`, increasing
* the total supply.
*
* Emits a {Transfer} event with `from` set to the zero address.
*
* Requirements:
*
* - `account` cannot be the zero address.
*/
function _mint(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: mint to the zero address");
_beforeTokenTransfer(address(0), account, amount);
_totalSupply += amount;
_balances[account] += amount;
emit Transfer(address(0), account, amount);
_afterTokenTransfer(address(0), account, amount);
}
/**
* @dev Destroys `amount` tokens from `account`, reducing the
* total supply.
*
* Emits a {Transfer} event with `to` set to the zero address.
*
* Requirements:
*
* - `account` cannot be the zero address.
* - `account` must have at least `amount` tokens.
*/
function _burn(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: burn from the zero address");
_beforeTokenTransfer(account, address(0), amount);
uint256 accountBalance = _balances[account];
require(accountBalance >= amount, "ERC20: burn amount exceeds balance");
unchecked {
_balances[account] = accountBalance - amount;
}
_totalSupply -= amount;
emit Transfer(account, address(0), amount);
_afterTokenTransfer(account, address(0), amount);
}
/**
* @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens.
*
* This internal function is equivalent to `approve`, and can be used to
* e.g. set automatic allowances for certain subsystems, etc.
*
* Emits an {Approval} event.
*
* Requirements:
*
* - `owner` cannot be the zero address.
* - `spender` cannot be the zero address.
*/
function _approve(
address owner,
address spender,
uint256 amount
) internal virtual {
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);
}
/**
* @dev Hook that is called before any transfer of tokens. This includes
* minting and burning.
*
* Calling conditions:
*
* - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
* will be transferred to `to`.
* - when `from` is zero, `amount` tokens will be minted for `to`.
* - when `to` is zero, `amount` of ``from``'s tokens will be burned.
* - `from` and `to` are never both zero.
*
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/
function _beforeTokenTransfer(
address from,
address to,
uint256 amount
) internal virtual {}
/**
* @dev Hook that is called after any transfer of tokens. This includes
* minting and burning.
*
* Calling conditions:
*
* - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
* has been transferred to `to`.
* - when `from` is zero, `amount` tokens have been minted for `to`.
* - when `to` is zero, `amount` of ``from``'s tokens have been burned.
* - `from` and `to` are never both zero.
*
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/
function _afterTokenTransfer(
address from,
address to,
uint256 amount
) internal virtual {}
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
import "../utils/Context.sol";
/**
* @dev Contract module which provides a basic access control mechanism, where
* there is an account (an owner) that can be granted exclusive access to
* specific functions.
*
* By default, the owner account will be the one that deploys the contract. This
* can later be changed with {transferOwnership}.
*
* This module is used through inheritance. It will make available the modifier
* `onlyOwner`, which can be applied to your functions to restrict their use to
* the owner.
*/
abstract contract Ownable is Context {
address private _owner;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
/**
* @dev Initializes the contract setting the deployer as the initial owner.
*/
constructor() {
_setOwner(_msgSender());
}
/**
* @dev Returns the address of the current owner.
*/
function owner() public view virtual returns (address) {
return _owner;
}
/**
* @dev Throws if called by any account other than the owner.
*/
modifier onlyOwner() {
require(owner() == _msgSender(), "Ownable: caller is not the owner");
_;
}
/**
* @dev Leaves the contract without owner. It will not be possible to call
* `onlyOwner` functions anymore. Can only be called by the current owner.
*
* NOTE: Renouncing ownership will leave the contract without an owner,
* thereby removing any functionality that is only available to the owner.
*/
function renounceOwnership() public virtual onlyOwner {
_setOwner(address(0));
}
/**
* @dev Transfers ownership of the contract to a new account (`newOwner`).
* Can only be called by the current owner.
*/
function transferOwnership(address newOwner) public virtual onlyOwner {
require(newOwner != address(0), "Ownable: new owner is the zero address");
_setOwner(newOwner);
}
function _setOwner(address newOwner) private {
address oldOwner = _owner;
_owner = newOwner;
emit OwnershipTransferred(oldOwner, newOwner);
}
}
pragma solidity >=0.6.2;
import './IUniswapV2Router01.sol';
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;
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
// CAUTION
// This version of SafeMath should only be used with Solidity 0.8 or later,
// because it relies on the compiler's built in overflow checks.
/**
* @dev Wrappers over Solidity's arithmetic operations.
*
* NOTE: `SafeMath` is no longer needed starting with Solidity 0.8. The compiler
* now has built in overflow checking.
*/
library SafeMath {
/**
* @dev Returns the addition of two unsigned integers, with an overflow flag.
*
* _Available since v3.4._
*/
function tryAdd(uint256 a, uint256 b) internal pure returns (bool, uint256) {
unchecked {
uint256 c = a + b;
if (c < a) return (false, 0);
return (true, c);
}
}
/**
* @dev Returns the substraction of two unsigned integers, with an overflow flag.
*
* _Available since v3.4._
*/
function trySub(uint256 a, uint256 b) internal pure returns (bool, uint256) {
unchecked {
if (b > a) return (false, 0);
return (true, a - b);
}
}
/**
* @dev Returns the multiplication of two unsigned integers, with an overflow flag.
*
* _Available since v3.4._
*/
function tryMul(uint256 a, uint256 b) internal pure returns (bool, uint256) {
unchecked {
// Gas optimization: this is cheaper than requiring 'a' not being zero, but the
// benefit is lost if 'b' is also tested.
// See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
if (a == 0) return (true, 0);
uint256 c = a * b;
if (c / a != b) return (false, 0);
return (true, c);
}
}
/**
* @dev Returns the division of two unsigned integers, with a division by zero flag.
*
* _Available since v3.4._
*/
function tryDiv(uint256 a, uint256 b) internal pure returns (bool, uint256) {
unchecked {
if (b == 0) return (false, 0);
return (true, a / b);
}
}
/**
* @dev Returns the remainder of dividing two unsigned integers, with a division by zero flag.
*
* _Available since v3.4._
*/
function tryMod(uint256 a, uint256 b) internal pure returns (bool, uint256) {
unchecked {
if (b == 0) return (false, 0);
return (true, a % b);
}
}
/**
* @dev Returns the addition of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `+` operator.
*
* Requirements:
*
* - Addition cannot overflow.
*/
function add(uint256 a, uint256 b) internal pure returns (uint256) {
return a + b;
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting on
* overflow (when the result is negative).
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
*
* - Subtraction cannot overflow.
*/
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
return a - b;
}
/**
* @dev Returns the multiplication of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `*` operator.
*
* Requirements:
*
* - Multiplication cannot overflow.
*/
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
return a * b;
}
/**
* @dev Returns the integer division of two unsigned integers, reverting on
* division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's `/` operator.
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function div(uint256 a, uint256 b) internal pure returns (uint256) {
return a / b;
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* reverting when dividing by zero.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function mod(uint256 a, uint256 b) internal pure returns (uint256) {
return a % b;
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting with custom message on
* overflow (when the result is negative).
*
* CAUTION: This function is deprecated because it requires allocating memory for the error
* message unnecessarily. For custom revert reasons use {trySub}.
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
*
* - Subtraction cannot overflow.
*/
function sub(
uint256 a,
uint256 b,
string memory errorMessage
) internal pure returns (uint256) {
unchecked {
require(b <= a, errorMessage);
return a - b;
}
}
/**
* @dev Returns the integer division of two unsigned integers, reverting with custom message on
* division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's `/` operator. Note: this function uses a
* `revert` opcode (which leaves remaining gas untouched) while Solidity
* uses an invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function div(
uint256 a,
uint256 b,
string memory errorMessage
) internal pure returns (uint256) {
unchecked {
require(b > 0, errorMessage);
return a / b;
}
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* reverting with custom message when dividing by zero.
*
* CAUTION: This function is deprecated because it requires allocating memory for the error
* message unnecessarily. For custom revert reasons use {tryMod}.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function mod(
uint256 a,
uint256 b,
string memory errorMessage
) internal pure returns (uint256) {
unchecked {
require(b > 0, errorMessage);
return a % b;
}
}
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
/**
* @dev Interface of the ERC20 standard as defined in the EIP.
*/
interface IERC20 {
/**
* @dev Returns the amount of tokens in existence.
*/
function totalSupply() external view returns (uint256);
/**
* @dev Returns the amount of tokens owned by `account`.
*/
function balanceOf(address account) external view returns (uint256);
/**
* @dev Moves `amount` tokens from the caller's account to `recipient`.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transfer(address recipient, uint256 amount) external returns (bool);
/**
* @dev Returns the remaining number of tokens that `spender` will be
* allowed to spend on behalf of `owner` through {transferFrom}. This is
* zero by default.
*
* This value changes when {approve} or {transferFrom} are called.
*/
function allowance(address owner, address spender) external view returns (uint256);
/**
* @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* IMPORTANT: Beware that changing an allowance with this method brings the risk
* that someone may use both the old and the new allowance by unfortunate
* transaction ordering. One possible solution to mitigate this race
* condition is to first reduce the spender's allowance to 0 and set the
* desired value afterwards:
* https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
*
* Emits an {Approval} event.
*/
function approve(address spender, uint256 amount) external returns (bool);
/**
* @dev Moves `amount` tokens from `sender` to `recipient` using the
* allowance mechanism. `amount` is then deducted from the caller's
* allowance.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transferFrom(
address sender,
address recipient,
uint256 amount
) external returns (bool);
/**
* @dev Emitted when `value` tokens are moved from one account (`from`) to
* another (`to`).
*
* Note that `value` may be zero.
*/
event Transfer(address indexed from, address indexed to, uint256 value);
/**
* @dev Emitted when the allowance of a `spender` for an `owner` is set by
* a call to {approve}. `value` is the new allowance.
*/
event Approval(address indexed owner, address indexed spender, uint256 value);
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
import "../IERC20.sol";
/**
* @dev Interface for the optional metadata functions from the ERC20 standard.
*
* _Available since v4.1._
*/
interface IERC20Metadata is IERC20 {
/**
* @dev Returns the name of the token.
*/
function name() external view returns (string memory);
/**
* @dev Returns the symbol of the token.
*/
function symbol() external view returns (string memory);
/**
* @dev Returns the decimals places of the token.
*/
function decimals() external view returns (uint8);
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
/**
* @dev Provides information about the current execution context, including the
* sender of the transaction and its data. While these are generally available
* via msg.sender and msg.data, they should not be accessed in such a direct
* manner, since when dealing with meta-transactions the account sending and
* paying for execution may not be the actual sender (as far as an application
* is concerned).
*
* This contract is only required for intermediate, library-like contracts.
*/
abstract contract Context {
function _msgSender() internal view virtual returns (address) {
return msg.sender;
}
function _msgData() internal view virtual returns (bytes calldata) {
return msg.data;
}
}
pragma solidity >=0.6.2;
interface IUniswapV2Router01 {
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 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);
}