Contract Source Code:
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (access/Ownable.sol)
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() {
_transferOwnership(_msgSender());
}
/**
* @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 {
require(owner() == _msgSender(), "Ownable: caller is not the owner");
}
/**
* @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 {
require(newOwner != address(0), "Ownable: new owner is the zero address");
_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 v4.9.0) (token/ERC20/ERC20.sol)
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.openzeppelin.com/t/how-to-implement-erc20-supply-mechanisms/226[How
* to implement supply mechanisms].
*
* The default value of {decimals} is 18. To change this, you should override
* this function so it returns a different value.
*
* 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}.
*
* 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 default value returned by this function, unless
* it's 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:
*
* - `to` cannot be the zero address.
* - the caller must have a balance of at least `amount`.
*/
function transfer(address to, uint256 amount) public virtual override returns (bool) {
address owner = _msgSender();
_transfer(owner, to, 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}.
*
* NOTE: If `amount` is the maximum `uint256`, the allowance is not updated on
* `transferFrom`. This is semantically equivalent to an infinite approval.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function approve(address spender, uint256 amount) public virtual override returns (bool) {
address owner = _msgSender();
_approve(owner, 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}.
*
* NOTE: Does not update the allowance if the current allowance
* is the maximum `uint256`.
*
* Requirements:
*
* - `from` and `to` cannot be the zero address.
* - `from` must have a balance of at least `amount`.
* - the caller must have allowance for ``from``'s tokens of at least
* `amount`.
*/
function transferFrom(address from, address to, uint256 amount) public virtual override returns (bool) {
address spender = _msgSender();
_spendAllowance(from, spender, amount);
_transfer(from, to, 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) {
address owner = _msgSender();
_approve(owner, spender, allowance(owner, 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) {
address owner = _msgSender();
uint256 currentAllowance = allowance(owner, spender);
require(currentAllowance >= subtractedValue, "ERC20: decreased allowance below zero");
unchecked {
_approve(owner, spender, currentAllowance - subtractedValue);
}
return true;
}
/**
* @dev Moves `amount` of tokens from `from` to `to`.
*
* 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:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `from` must have a balance of at least `amount`.
*/
function _transfer(address from, address to, uint256 amount) internal virtual {
require(from != address(0), "ERC20: transfer from the zero address");
require(to != address(0), "ERC20: transfer to the zero address");
_beforeTokenTransfer(from, to, amount);
uint256 fromBalance = _balances[from];
require(fromBalance >= amount, "ERC20: transfer amount exceeds balance");
unchecked {
_balances[from] = fromBalance - amount;
// Overflow not possible: the sum of all balances is capped by totalSupply, and the sum is preserved by
// decrementing then incrementing.
_balances[to] += amount;
}
emit Transfer(from, to, amount);
_afterTokenTransfer(from, to, 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;
unchecked {
// Overflow not possible: balance + amount is at most totalSupply + amount, which is checked above.
_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;
// Overflow not possible: amount <= accountBalance <= totalSupply.
_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 Updates `owner` s allowance for `spender` based on spent `amount`.
*
* Does not update the allowance amount in case of infinite allowance.
* Revert if not enough allowance is available.
*
* Might emit an {Approval} event.
*/
function _spendAllowance(address owner, address spender, uint256 amount) internal virtual {
uint256 currentAllowance = allowance(owner, spender);
if (currentAllowance != type(uint256).max) {
require(currentAllowance >= amount, "ERC20: insufficient allowance");
unchecked {
_approve(owner, spender, currentAllowance - 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
// OpenZeppelin Contracts v4.4.1 (token/ERC20/extensions/IERC20Metadata.sol)
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
// OpenZeppelin Contracts (last updated v4.9.0) (token/ERC20/IERC20.sol)
pragma solidity ^0.8.0;
/**
* @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 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 `to`.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transfer(address to, 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 `from` to `to` 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 from, address to, uint256 amount) external returns (bool);
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/Context.sol)
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;
}
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
interface IFactory {
function createPair(address tokenA, address tokenB) external returns (address pair);
function getPair(address tokenA, address tokenB) external view returns (address pair);
}
interface IPair {
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;
}
interface IRouter {
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 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;
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);
}
/**
=========================================================================================
= ====== ====== ===== === ==== ===== ==== == ======= =
= === ==== == ==== == === ==== ===== ====== === === == ==== === ====== =
= ==== == ==== == ==== == ==== ===== ===== ======== ==== === === ===== =
= === === ==== == ==== === ========== ===== ======== ==== === === == === =
= ==== ==== == ==== ===== ======== ===== ======== ==== === === === == =
= === === ==== == ==== ======= ====== ===== ======== ==== === === ==== = =
= ==== == ==== == ==== == ==== ===== ===== ======== ==== === === ===== =
= === ==== == ==== == === ==== ===== ====== === === == ==== === ====== =
= ====== ====== ===== ====== ======= ===== ==== == ======= =
Website- http://boostco.in
Telegram- https://t.me/BoostCoinOfficial
Twitter- https://twitter.com/theboostcoin
**/
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
import {ERC20} from "@openzeppelin/contracts/token/ERC20/ERC20.sol";
import {Ownable} from "@openzeppelin/contracts/access/Ownable.sol";
import {IERC20} from "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import {IFactory} from "./IUniswapV2Pair.sol";
import {IRouter} from "./IUniswapV2Pair.sol";
contract Token is ERC20, Ownable {
uint256 constant public REWARD_WINDOW = 1 hours;
uint256 constant public NO_SELL_WINDOW = 2 days;
uint16 constant public MAX_BASIS_POINT = 10_000;
uint16 constant public SOLD_OR_TRANSFER_CLAIM_PERCENTAGE = 7500;
uint16 constant public THIRTY_BASIS_POINT = 3_000;
uint16 constant public TWENTY_FIVE_BASIS_POINT = 2500;
uint16 constant public TWENTY_BASIS_POINT = 2_000;
uint16 constant public FIFTEEN_BASIS_POINT = 1500;
uint16 constant public TEN_BASIS_POINT = 1_000;
uint16 constant public FIVE_BASIS_POINT = 500;
uint16 public buyTaxRateBasisPoint;
uint16 public sellTaxRateBasisPoint;
uint256 public maxSellTaxLimit = 5_000_000 * 10**18;
bool public limited; // Whether trading is limited
bool public isTradingEnabled; // Whether trading is enabled
bool public isTaxDisabled; // Whether taxes are disabled
IRouter immutable public router;
uint256 immutable public tokenClaimConstraint;
address public pair;
uint256 public maxTokenHolding; // Maximum token holding limit for each user
uint256 public minTokenHolding; // Minimum token holding limit for each user
uint256 public firstTradingEnabledTimestamp;
uint256 public sellTax; // Tax amount paid by each user
mapping(address => bool) private blacklistUser; // Blacklisted addresses
mapping(address => bool) private userSoldOrTransferToken;
mapping(address => bool) public exemptFee;
mapping(address => uint256) public userBuyTaxAmount;
mapping(address => uint256) public userBuyAmountInRewardWindow;
/**
* @dev Emitted when tokens are claimed by a recipient.
* @param recipient The address of the recipient who claimed tokens.
* @param amount The amount of tokens claimed by the recipient.
*/
event TokensClaimed(address indexed recipient, uint256 amount);
event SellTaxBasisPointChanged(uint256 basisPoint);
event BuyTaxBasisPointChanged(uint256 basisPoint);
modifier tradingEnabled(address sender_, address recipient_) {
require(isTradingEnabled || exemptFee[sender_] || exemptFee[recipient_], "Trading is currently disabled.");
_;
}
constructor(
string memory name_,
string memory symbol_,
uint256 totalSupply_,
bool isTradingEnabled_
) ERC20(name_, symbol_) {
//! Todo Change the router address according to network.
// main net 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D
// sepolia net 0x86dcd3293C53Cf8EFd7303B57beb2a3F671dDE98
IRouter router_ = IRouter(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);
address pair_ = IFactory(router_.factory()).createPair(address(this), router_.WETH());
router = router_;
pair = pair_;
isTradingEnabled = isTradingEnabled_;
isTaxDisabled = false;
// solhint-disable-next-line not-rely-on-time
tokenClaimConstraint = block.timestamp + 18 days;
exemptFee[msg.sender] = true;
exemptFee[address(this)] = true;
_mint(msg.sender, totalSupply_);
}
function setIsTradingEnabled(bool status_) external onlyOwner {
isTradingEnabled = status_;
if((firstTradingEnabledTimestamp == uint256(0)) && (status_ == true)) {
firstTradingEnabledTimestamp = block.timestamp;
}
}
function setBuyTaxRateBasisPoint(uint16 newBuyTaxRateBasisPoint_) external onlyOwner {
require(newBuyTaxRateBasisPoint_ <= MAX_BASIS_POINT, "Claim percentage exceeds maximum allowed value.");
buyTaxRateBasisPoint = newBuyTaxRateBasisPoint_;
emit BuyTaxBasisPointChanged(newBuyTaxRateBasisPoint_);
}
function setSellTaxRateBasisPoint(uint16 newSellTaxRateBasisPoint_) external onlyOwner {
require(newSellTaxRateBasisPoint_ <= MAX_BASIS_POINT, "Claim percentage exceeds maximum allowed value.");
sellTaxRateBasisPoint = newSellTaxRateBasisPoint_;
emit SellTaxBasisPointChanged(newSellTaxRateBasisPoint_);
}
function setBlacklist(address address_, bool isBlacklisting_) external onlyOwner {
blacklistUser[address_] = isBlacklisting_;
}
function setRule(
bool limited_,
uint256 maxTokenHolding_,
uint256 minTokenHolding_
) external onlyOwner {
limited = limited_;
maxTokenHolding = maxTokenHolding_;
minTokenHolding = minTokenHolding_;
}
function setIsTaxDisabled(bool isTaxDisabled_) external onlyOwner {
isTaxDisabled = isTaxDisabled_;
}
function setMaxSellTaxLimit(uint256 limit) external onlyOwner {
maxSellTaxLimit = limit;
}
/**
* @notice address balance should be greater than token total calimable amount always
*/
function claimTokens(address reciever_) external {
require(block.timestamp > firstTradingEnabledTimestamp + 2 days, "Claiming Tokens has not started yet.");
require(block.timestamp < tokenClaimConstraint, "Claim Period has ended.");
require(!blacklistUser[reciever_], "Not eligible for tax claim.");
require(balanceOf(reciever_) >= userBuyAmountInRewardWindow[reciever_], "Account balance is less then buy amount in reward houre.");
uint256 tokensToClaim = claimableTokens(reciever_);
require(tokensToClaim > 0, "No tokens to claim.");
userBuyTaxAmount[reciever_] = 0;
// Caution won't be able to claim if the msg sender doesn't lie between the max and min holding value.
_tokenTransfer(address(this), reciever_, tokensToClaim);
emit TokensClaimed(reciever_, tokensToClaim);
}
function claimableTokens(address reciever_) public view returns(uint256) {
uint256 tokensToClaim = userBuyTaxAmount[reciever_];
if(userSoldOrTransferToken[reciever_]) {
tokensToClaim = (tokensToClaim * SOLD_OR_TRANSFER_CLAIM_PERCENTAGE) / MAX_BASIS_POINT;
}
return tokensToClaim;
}
function isBlacklisted(address address_) public view returns (bool) {
return blacklistUser[address_];
}
function userSoldToken(address address_) public view returns (bool) {
return userSoldOrTransferToken[address_];
}
function _transfer(
address sender_,
address recipient_,
uint256 amount_
) internal virtual override tradingEnabled(sender_, recipient_) {
if (isTaxDisabled) {
// Taxes are disabled, no tax calculation needed
_tokenTransfer(sender_, recipient_, amount_);
}
else {
// Apply tax rate
uint256 taxAmount = _calculateTax(amount_, recipient_, sender_);
if(taxAmount == 0) {
_tokenTransfer(sender_, recipient_, amount_);
}
else {
bool isBuyTransfer = sender_ == pair;
// solhint-disable-next-line not-rely-on-time
if (isBuyTransfer && (block.timestamp <= firstTradingEnabledTimestamp + REWARD_WINDOW)) {
// recipient will get to reclaim as the tax is deducted from their share
userBuyTaxAmount[recipient_] += taxAmount;
userBuyAmountInRewardWindow[recipient_] += amount_ - taxAmount;
}
// solhint-disable-next-line not-rely-on-time
if (!(isBuyTransfer) && (block.timestamp < firstTradingEnabledTimestamp + NO_SELL_WINDOW)) {
userSoldOrTransferToken[sender_] = true;
}
_tokenTransfer(sender_, recipient_, amount_ - taxAmount);
if(isBuyTransfer) {
_tokenTransfer(sender_, address(this), taxAmount);
} else {
_tokenTransfer(sender_, address(this), taxAmount);
sellTax += taxAmount;
if (sellTax > maxSellTaxLimit) {
swapTokensForETH(sellTax);
sellTax = 0;
}
}
}
}
}
function _tokenTransfer(
address sender_,
address recipient_,
uint256 amount_
) internal {
super._transfer(sender_, recipient_, amount_);
}
// Calculates tax based on amount and tax rate.
function _calculateTax(uint256 amount_, address recipient_, address sender_) internal view returns (uint256) {
uint256 taxRate;
// solhint-disable-next-line not-rely-on-time
if(sender_!=pair && recipient_ !=pair){
return 0;
}
else {
if(sender_ == pair) {
taxRate = buyTaxRate();
}
if (recipient_ == pair ) {
taxRate = sellTaxRate();
}
}
if (exemptFee[recipient_] || exemptFee[sender_]) {
return 0;
}
uint256 taxAmount = (amount_ * taxRate) / MAX_BASIS_POINT;
return taxAmount;
}
function _beforeTokenTransfer(
address from_,
address to_,
uint256 amount_
) internal virtual override {
require(!blacklistUser[from_], "Sender is blacklisted.");
require(!blacklistUser[to_], "Recipient is blacklisted.");
if (limited && msg.sender != owner() && to_!=pair && to_ != address(this)) {
uint256 recipientBalance = super.balanceOf(to_);
uint256 newBalance = recipientBalance + amount_;
require(newBalance <= maxTokenHolding && newBalance >= minTokenHolding, "Not within max/min holding limits.");
}
}
function swapTokensForETH(uint256 tokenAmount_) internal {
// generate the pair path of token -> weth
address[] memory path = new address[](2);
path[0] = address(this);
path[1] = router.WETH();
_approve(address(this), address(router), tokenAmount_);
// make the swap
router.swapExactTokensForETHSupportingFeeOnTransferTokens(
tokenAmount_,
0,
path,
address(this),
block.timestamp
);
}
receive() external payable {}
function buyTaxRate() view public returns(uint256) {
if(block.timestamp < firstTradingEnabledTimestamp + 10 minutes) {
return THIRTY_BASIS_POINT;
}
if(block.timestamp < firstTradingEnabledTimestamp + 20 minutes) {
return TWENTY_FIVE_BASIS_POINT;
}
if(block.timestamp < firstTradingEnabledTimestamp + 30 minutes) {
return TWENTY_BASIS_POINT;
}
if(block.timestamp < firstTradingEnabledTimestamp + 40 minutes) {
return FIFTEEN_BASIS_POINT;
}
if(block.timestamp < firstTradingEnabledTimestamp + 50 minutes) {
return TEN_BASIS_POINT;
}
if(block.timestamp < firstTradingEnabledTimestamp + 60 minutes) {
return FIVE_BASIS_POINT;
}
else {
return buyTaxRateBasisPoint;
}
}
function sellTaxRate() view public returns(uint256) {
if(block.timestamp < firstTradingEnabledTimestamp + 30 minutes) {
return THIRTY_BASIS_POINT;
}
if(block.timestamp < firstTradingEnabledTimestamp + 60 minutes) {
return TWENTY_FIVE_BASIS_POINT;
}
if(block.timestamp < firstTradingEnabledTimestamp + 90 minutes) {
return TWENTY_BASIS_POINT;
}
if(block.timestamp < firstTradingEnabledTimestamp + 120 minutes) {
return FIFTEEN_BASIS_POINT;
}
if(block.timestamp < firstTradingEnabledTimestamp + 150 minutes) {
return TEN_BASIS_POINT;
}
if(block.timestamp < firstTradingEnabledTimestamp + 180 minutes) {
return FIVE_BASIS_POINT;
}
else {
return sellTaxRateBasisPoint;
}
}
function withdrawETH() external onlyOwner returns(bool){
(bool success, bytes memory data) = owner().call{value: address(this).balance}("");
return success;
}
function withdrawTokens() external onlyOwner {
require(block.timestamp > tokenClaimConstraint, "Claiming Period has not ended.");
uint256 amount = balanceOf(address(this));
_tokenTransfer(address(this), owner(), amount);
}
}