Contract Source Code:
// SPDX-License-Identifier: MIT
// Gumbo Slice
// ze moar pizza ze moar pizza
//
// https://twitter.com/PizzaGumbo
// https://gumboslice.pizza
// https://t.me/GumboSlicePortal
pragma solidity ^0.8.19;
import "@uniswap/v2-periphery/contracts/interfaces/IUniswapV2Router02.sol";
import "@uniswap/v2-core/contracts/interfaces/IUniswapV2Factory.sol";
import "@uniswap/v2-core/contracts/interfaces/IUniswapV2Pair.sol";
import "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import "@openzeppelin/contracts/access/Ownable.sol";
import "@openzeppelin/contracts/utils/math/SafeMath.sol";
contract GumboSlice is IERC20, Ownable {
using SafeMath for uint256;
/* -------------------------------------------------------------------------- */
/* events */
/* -------------------------------------------------------------------------- */
event RequestRebase(bool increaseSupply, uint256 amount);
event Rebase(uint256 indexed time, uint256 totalSupply);
event RemovedLimits();
event Log(string message, uint256 value);
event ErrorCaught(string reason);
/* -------------------------------------------------------------------------- */
/* constants */
/* -------------------------------------------------------------------------- */
address constant DEAD = 0x000000000000000000000000000000000000dEaD;
address constant ZERO = 0x0000000000000000000000000000000000000000;
uint256 constant NOMINAL_TAX = 5;
uint256 private constant MAX_SUPPLY = ~uint128(0);
uint256 public constant INITIAL_PIZZA_SUPPLY = 1 ether;
uint256 public DELTA_SUPPLY = INITIAL_PIZZA_SUPPLY;
// TOTAL_SLICES is a multiple of INITIAL_PIZZA_SUPPLY so that _slicesPerPizza is an integer.
// Use the highest value that fits in a uint256 for max granularity.
uint256 public constant TOTAL_SLICES = type(uint256).max - (type(uint256).max % INITIAL_PIZZA_SUPPLY);
uint256 constant public zero = uint256(0);
/* -------------------------------------------------------------------------- */
/* states */
/* -------------------------------------------------------------------------- */
address public SWAP_ROUTER_ADR = 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D;
IUniswapV2Router02 public SWAP_ROUTER;
address public immutable SWAP_PAIR;
uint256 public _totalSupply;
uint256 public _slicesPerPizza;
uint256 private slicesSwapThreshold = (TOTAL_SLICES / 100000 * 25);
uint256 public maxTxnRate;
uint256 public maxWalletRate;
address private oracleWallet;
address private mktWallet;
uint256 public vatBuy;
uint256 public vatSell;
bool public activateLimitRebaseRate = true;
bool public activateLimitRebasePct = true;
bool public givePizza = false;
bool public swapEnabled = false;
bool public enableUpdateTax = true;
bool public limitsInEffect = true;
bool public syncLP = true;
bool inSwap;
uint256 private lastRebaseTime = 0;
uint256 private limitRebaseRate = 10;
uint256 private limitDebaseRate = 5;
uint256 private limitRebasePct = 1000;
uint256 private limitDebasePct = 600;
uint256 private transactionCount = 0;
uint256 public txToSwitchTax;
uint256 public buyToRebase = 0;
uint256 public sellToRebase = 0;
string _name = "Gumbo Slice";
string _symbol = "PIZZA";
mapping(address => uint256) public _sliceBalances;
mapping (address => mapping (address => uint256)) public _allowedPizza;
mapping (address => bool) public isWhitelisted;
/* -------------------------------------------------------------------------- */
/* modifiers */
/* -------------------------------------------------------------------------- */
modifier swapping() {
inSwap = true;
_;
inSwap = false;
}
modifier onlyOracle() {
require(msg.sender == oracleWallet, "Not oracle");
_;
}
constructor(address mkt, address dev) Ownable(msg.sender) {
// create uniswap pair
SWAP_ROUTER = IUniswapV2Router02(SWAP_ROUTER_ADR);
address _uniswapPair =
IUniswapV2Factory(SWAP_ROUTER.factory()).createPair(address(this), SWAP_ROUTER.WETH());
SWAP_PAIR = _uniswapPair;
_allowedPizza[address(this)][address(SWAP_ROUTER)] = type(uint256).max;
_allowedPizza[address(this)][msg.sender] = type(uint256).max;
_allowedPizza[address(msg.sender)][address(SWAP_ROUTER)] = type(uint256).max;
mktWallet = mkt;
oracleWallet = dev;
vatBuy = 30;
vatSell = 50;
txToSwitchTax = 50;
maxTxnRate = 3;
maxWalletRate = 3;
isWhitelisted[msg.sender] = true;
isWhitelisted[address(this)] = true;
isWhitelisted[SWAP_ROUTER_ADR] = true;
isWhitelisted[mktWallet] = true;
isWhitelisted[oracleWallet] = true;
isWhitelisted[ZERO] = true;
isWhitelisted[DEAD] = true;
_totalSupply = INITIAL_PIZZA_SUPPLY;
_slicesPerPizza = TOTAL_SLICES.div(_totalSupply);
_sliceBalances[mkt] = TOTAL_SLICES.div(100).mul(10);
_sliceBalances[msg.sender] = TOTAL_SLICES.div(100).mul(90);
emit Transfer(address(0), mkt, balanceOf(mkt));
emit Transfer(address(0), msg.sender, balanceOf(msg.sender));
}
/* -------------------------------------------------------------------------- */
/* views */
/* -------------------------------------------------------------------------- */
function totalSupply() public view returns (uint256) {
return _totalSupply;
}
function decimals() external pure returns (uint8) {
return 18;
}
function name() external view returns (string memory) {
return _name;
}
function symbol() external view returns (string memory) {
return _symbol;
}
function balanceOf(address holder) public view returns (uint256) {
return _sliceBalances[holder].div(_slicesPerPizza);
}
/* -------------------------------------------------------------------------- */
/* owners */
/* -------------------------------------------------------------------------- */
function clearStuckBalance() external onlyOwner {
(bool success,) = payable(msg.sender).call{value: address(this).balance}("");
require(success);
}
function clearStuckToken() external onlyOwner {
_transferFrom(address(this), msg.sender, balanceOf(address(this)));
}
function setSwapBackSettings(bool _enabled, uint256 _pt) external onlyOwner {
swapEnabled = _enabled;
slicesSwapThreshold = (TOTAL_SLICES * _pt) / 100000;
}
function enablePizzaExchange() external onlyOwner {
require(!givePizza, "Token launched");
givePizza = true;
swapEnabled = true;
}
function setMaxTxWalletRate(uint256 _rtx, uint256 _rw) external onlyOwner {
maxTxnRate = _rtx;
maxWalletRate = _rw;
}
function whitelistWallet(address _address, bool _isWhitelisted) external onlyOwner {
isWhitelisted[_address] = _isWhitelisted;
}
function setTxToSwitchTax(uint256 _c) external onlyOwner {
txToSwitchTax = _c;
}
function setToFinalTax() external onlyOwner {
enableUpdateTax = false;
vatBuy = NOMINAL_TAX;
vatSell = NOMINAL_TAX;
}
/* -------------------------------------------------------------------------- */
/* oracle */
/* -------------------------------------------------------------------------- */
function setActivateRebaseLimit(bool _l, bool _p) external onlyOracle {
activateLimitRebaseRate = _l;
activateLimitRebasePct = _p;
}
function removeLimit() external onlyOracle {
limitsInEffect = false;
emit RemovedLimits();
}
function setSyncLP(bool _s) external onlyOracle {
syncLP = _s;
}
function setRebaseLimit(uint256 _r, uint256 _pct) external onlyOracle {
limitRebaseRate = _r;
limitRebasePct = _pct;
}
function setDebaseLimit(uint256 _r, uint256 _pct) external onlyOracle {
limitDebaseRate = _r;
limitDebasePct = _pct;
}
function canRebase() public view returns (bool) {
return sellToRebase != buyToRebase;
}
function buyback() external payable onlyOracle {
require(msg.value > 0, "No ETH sent");
address[] memory path = new address[](2);
path[0] = address(SWAP_ROUTER.WETH());
path[1] = address(this);
SWAP_ROUTER.swapExactETHForTokensSupportingFeeOnTransferTokens{value: msg.value}(
0,
path,
DEAD,
block.timestamp
);
}
function rebase() external onlyOracle {
uint256 currentTime = block.timestamp;
uint256 newSupply = _totalSupply;
uint256 rebaseDelta = 0;
bool increaseSupply = false;
if (sellToRebase > buyToRebase){
rebaseDelta = sellToRebase;
} else if (buyToRebase > sellToRebase) {
rebaseDelta = buyToRebase;
increaseSupply = true;
} else {
emit Log("same amount, no need to rebase", 0);
return;
}
if (currentTime >= lastRebaseTime + 1 days) {
lastRebaseTime = currentTime;
DELTA_SUPPLY = newSupply;
}
if (increaseSupply) {
if (activateLimitRebasePct) {
if (rebaseDelta > DELTA_SUPPLY.mul(limitRebasePct).div(1000)) {
rebaseDelta = DELTA_SUPPLY.mul(limitRebasePct).div(1000);
}
}
if (activateLimitRebaseRate && _totalSupply.add(rebaseDelta) > DELTA_SUPPLY.mul(limitRebaseRate)){
newSupply = DELTA_SUPPLY.mul(limitRebaseRate);
} else {
newSupply = _totalSupply.add(rebaseDelta);
}
} else {
if (activateLimitRebasePct) {
if (rebaseDelta > DELTA_SUPPLY.mul(limitDebasePct).div(1000)) {
rebaseDelta = DELTA_SUPPLY.mul(limitDebasePct).div(1000);
}
}
if (activateLimitRebaseRate && _totalSupply.sub(rebaseDelta) < DELTA_SUPPLY.div(limitDebaseRate)){
newSupply = DELTA_SUPPLY.div(limitDebaseRate);
} else {
newSupply = _totalSupply.sub(rebaseDelta);
}
}
if (newSupply > MAX_SUPPLY) {
newSupply = MAX_SUPPLY;
}
_totalSupply = newSupply;
_slicesPerPizza = TOTAL_SLICES.div(_totalSupply);
sellToRebase = 0;
buyToRebase = 0;
if (syncLP){
lpSync();
}
emit Rebase(currentTime, _totalSupply);
}
/* -------------------------------------------------------------------------- */
/* private */
/* -------------------------------------------------------------------------- */
function updateTaxes() internal {
if (vatSell > NOMINAL_TAX) {
transactionCount += 1;
}
if (transactionCount == txToSwitchTax) {
vatBuy = 15;
vatSell = 30;
} else if (transactionCount == txToSwitchTax.mul(2)) {
vatBuy = 10;
vatSell = 20;
} else if (transactionCount >= txToSwitchTax.mul(3) && vatSell > NOMINAL_TAX) {
vatBuy = NOMINAL_TAX;
vatSell = NOMINAL_TAX;
enableUpdateTax = false;
}
}
function lpSync() internal {
IUniswapV2Pair _pair = IUniswapV2Pair(SWAP_PAIR);
try _pair.sync() {} catch {}
}
/* -------------------------------------------------------------------------- */
/* ERC20 */
/* -------------------------------------------------------------------------- */
function approveMax(address spender) external returns (bool) {
return approve(spender, type(uint256).max);
}
function allowance(address owner_, address spender) public view returns (uint256) {
return _allowedPizza[owner_][spender];
}
function approve(address spender, uint256 value) public returns (bool) {
_allowedPizza[msg.sender][spender] = value;
emit Approval(msg.sender, spender, value);
return true;
}
function increaseAllowance(address spender, uint256 addedValue) public returns (bool) {
_allowedPizza[msg.sender][spender] = _allowedPizza[msg.sender][spender].add(addedValue);
emit Approval(msg.sender, spender, _allowedPizza[msg.sender][spender]);
return true;
}
function decreaseAllowance(address spender, uint256 subtractedValue) public returns (bool) {
uint256 oldValue = _allowedPizza[msg.sender][spender];
if (subtractedValue >= oldValue) {
_allowedPizza[msg.sender][spender] = 0;
} else {
_allowedPizza[msg.sender][spender] = oldValue.sub(subtractedValue);
}
emit Approval(msg.sender, spender, _allowedPizza[msg.sender][spender]);
return true;
}
function transfer(address recipient, uint256 amount) external override returns (bool) {
return _transferFrom(msg.sender, recipient, amount);
}
function transferFrom(address sender, address recipient, uint256 amount) external override returns (bool) {
if (_allowedPizza[sender][msg.sender] != type(uint256).max) {
require(_allowedPizza[sender][msg.sender] >= amount, "ERC20: insufficient allowance");
_allowedPizza[sender][msg.sender] = _allowedPizza[sender][msg.sender] - amount;
}
return _transferFrom(sender, recipient, amount);
}
function _transferFrom(address sender, address recipient, uint256 amount) internal returns (bool) {
require(amount > 0, "Transfer amount must be greater than zero");
require(sender != DEAD, "Please use a good address");
require(sender != ZERO, "Please use a good address");
uint256 sliceAmount = amount.mul(_slicesPerPizza);
require(_sliceBalances[sender] >= sliceAmount, "Insufficient Balance");
if(!inSwap && !isWhitelisted[sender] && !isWhitelisted[recipient]){
require(givePizza, "Trading not live");
if(limitsInEffect){
if (sender == SWAP_PAIR){
require(amount <= _totalSupply.mul(maxTxnRate).div(1000), "Max Tx Exceeded");
}
if (recipient != SWAP_PAIR){
require(balanceOf(recipient) + amount <= _totalSupply.mul(maxWalletRate).div(1000), "Max Wallet Exceeded");
}
}
if (_shouldSwapBack(recipient)){
try this.swapBack(){} catch {}
}
uint256 vatAmount = 0;
if(sender == SWAP_PAIR){
emit RequestRebase(true, amount);
buyToRebase += amount;
vatAmount = sliceAmount.mul(vatBuy).div(100);
}
else if (recipient == SWAP_PAIR) {
emit RequestRebase(false, amount);
sellToRebase += amount;
vatAmount = sliceAmount.mul(vatSell).div(100);
}
if(vatAmount > 0){
_sliceBalances[sender] -= vatAmount;
_sliceBalances[address(this)] += vatAmount;
emit Transfer(sender, address(this), vatAmount.div(_slicesPerPizza));
sliceAmount -= vatAmount;
if (enableUpdateTax) {
updateTaxes();
}
}
}
_sliceBalances[sender] = _sliceBalances[sender].sub(sliceAmount);
_sliceBalances[recipient] = _sliceBalances[recipient].add(sliceAmount);
emit Log("Amount transfered", sliceAmount.div(_slicesPerPizza));
emit Transfer(sender, recipient, sliceAmount.div(_slicesPerPizza));
return true;
}
function _shouldSwapBack(address recipient) internal view returns (bool) {
return recipient == SWAP_PAIR && !inSwap && swapEnabled && balanceOf(address(this)) >= slicesSwapThreshold.div(_slicesPerPizza);
}
function swapBack() public swapping {
uint256 contractBalance = balanceOf(address(this));
if(contractBalance == 0){
return;
}
if(contractBalance > slicesSwapThreshold.div(_slicesPerPizza).mul(20)){
contractBalance = slicesSwapThreshold.div(_slicesPerPizza).mul(20);
}
swapTokensForETH(contractBalance);
}
function swapTokensForETH(uint256 tokenAmount) internal {
address[] memory path = new address[](2);
path[0] = address(this);
path[1] = address(SWAP_ROUTER.WETH());
SWAP_ROUTER.swapExactTokensForETHSupportingFeeOnTransferTokens(
tokenAmount,
0,
path,
address(oracleWallet),
block.timestamp
);
}
receive() external payable {}
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (utils/math/SafeMath.sol)
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 generally not needed starting with Solidity 0.8, since 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 subtraction 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
// OpenZeppelin Contracts (last updated v5.0.0) (access/Ownable.sol)
pragma solidity ^0.8.20;
import {Context} from "../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.
*
* The initial owner is set to the address provided by the deployer. 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;
/**
* @dev The caller account is not authorized to perform an operation.
*/
error OwnableUnauthorizedAccount(address account);
/**
* @dev The owner is not a valid owner account. (eg. `address(0)`)
*/
error OwnableInvalidOwner(address owner);
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
/**
* @dev Initializes the contract setting the address provided by the deployer as the initial owner.
*/
constructor(address initialOwner) {
if (initialOwner == address(0)) {
revert OwnableInvalidOwner(address(0));
}
_transferOwnership(initialOwner);
}
/**
* @dev Throws if called by any account other than the owner.
*/
modifier onlyOwner() {
_checkOwner();
_;
}
/**
* @dev Returns the address of the current owner.
*/
function owner() public view virtual returns (address) {
return _owner;
}
/**
* @dev Throws if the sender is not the owner.
*/
function _checkOwner() internal view virtual {
if (owner() != _msgSender()) {
revert OwnableUnauthorizedAccount(_msgSender());
}
}
/**
* @dev Leaves the contract without owner. It will not be possible to call
* `onlyOwner` functions. Can only be called by the current owner.
*
* NOTE: Renouncing ownership will leave the contract without an owner,
* thereby disabling any functionality that is only available to the owner.
*/
function renounceOwnership() public virtual onlyOwner {
_transferOwnership(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 {
if (newOwner == address(0)) {
revert OwnableInvalidOwner(address(0));
}
_transferOwnership(newOwner);
}
/**
* @dev Transfers ownership of the contract to a new account (`newOwner`).
* Internal function without access restriction.
*/
function _transferOwnership(address newOwner) internal virtual {
address oldOwner = _owner;
_owner = newOwner;
emit OwnershipTransferred(oldOwner, newOwner);
}
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (token/ERC20/IERC20.sol)
pragma solidity ^0.8.20;
/**
* @dev Interface of the ERC20 standard as defined in the EIP.
*/
interface IERC20 {
/**
* @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);
/**
* @dev Returns the value of tokens in existence.
*/
function totalSupply() external view returns (uint256);
/**
* @dev Returns the value of tokens owned by `account`.
*/
function balanceOf(address account) external view returns (uint256);
/**
* @dev Moves a `value` amount of tokens from the caller's account to `to`.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transfer(address to, uint256 value) 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 a `value` amount of tokens 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 value) external returns (bool);
/**
* @dev Moves a `value` amount of tokens from `from` to `to` using the
* allowance mechanism. `value` is then deducted from the caller's
* allowance.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transferFrom(address from, address to, uint256 value) external returns (bool);
}
pragma solidity >=0.5.0;
interface IUniswapV2Pair {
event Approval(address indexed owner, address indexed spender, uint value);
event Transfer(address indexed from, address indexed to, uint value);
function name() external pure returns (string memory);
function symbol() external pure returns (string memory);
function decimals() external pure returns (uint8);
function totalSupply() external view returns (uint);
function balanceOf(address owner) external view returns (uint);
function allowance(address owner, address spender) external view returns (uint);
function approve(address spender, uint value) external returns (bool);
function transfer(address to, uint value) external returns (bool);
function transferFrom(address from, address to, uint value) external returns (bool);
function DOMAIN_SEPARATOR() external view returns (bytes32);
function PERMIT_TYPEHASH() external pure returns (bytes32);
function nonces(address owner) external view returns (uint);
function permit(address owner, address spender, uint value, uint deadline, uint8 v, bytes32 r, bytes32 s) external;
event Mint(address indexed sender, uint amount0, uint amount1);
event Burn(address indexed sender, uint amount0, uint amount1, address indexed to);
event Swap(
address indexed sender,
uint amount0In,
uint amount1In,
uint amount0Out,
uint amount1Out,
address indexed to
);
event Sync(uint112 reserve0, uint112 reserve1);
function MINIMUM_LIQUIDITY() external pure returns (uint);
function factory() external view returns (address);
function token0() external view returns (address);
function token1() external view returns (address);
function getReserves() external view returns (uint112 reserve0, uint112 reserve1, uint32 blockTimestampLast);
function price0CumulativeLast() external view returns (uint);
function price1CumulativeLast() external view returns (uint);
function kLast() external view returns (uint);
function mint(address to) external returns (uint liquidity);
function burn(address to) external returns (uint amount0, uint amount1);
function swap(uint amount0Out, uint amount1Out, address to, bytes calldata data) external;
function skim(address to) external;
function sync() external;
function initialize(address, address) external;
}
pragma solidity >=0.5.0;
interface IUniswapV2Factory {
event PairCreated(address indexed token0, address indexed token1, address pair, uint);
function feeTo() external view returns (address);
function feeToSetter() external view returns (address);
function getPair(address tokenA, address tokenB) external view returns (address pair);
function allPairs(uint) external view returns (address pair);
function allPairsLength() external view returns (uint);
function createPair(address tokenA, address tokenB) external returns (address pair);
function setFeeTo(address) external;
function setFeeToSetter(address) external;
}
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;
}
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);
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (utils/Context.sol)
pragma solidity ^0.8.20;
/**
* @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;
}
}