Contract Source Code:
File 1 of 1 : MMAI
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.9;
interface IUniswapRouter01 {
function factory() external pure returns (address);
function WETH() external pure returns (address);
function addLiquidity(
address tokenA,
address tokenB,
uint256 amountADesired,
uint256 amountBDesired,
uint256 amountAMin,
uint256 amountBMin,
address to,
uint256 deadline
)
external
returns (
uint256 amountA,
uint256 amountB,
uint256 liquidity
);
function addLiquidityETH(
address token,
uint256 amountTokenDesired,
uint256 amountTokenMin,
uint256 amountETHMin,
address to,
uint256 deadline
)
external
payable
returns (
uint256 amountToken,
uint256 amountETH,
uint256 liquidity
);
function removeLiquidity(
address tokenA,
address tokenB,
uint256 liquidity,
uint256 amountAMin,
uint256 amountBMin,
address to,
uint256 deadline
) external returns (uint256 amountA, uint256 amountB);
function removeLiquidityETH(
address token,
uint256 liquidity,
uint256 amountTokenMin,
uint256 amountETHMin,
address to,
uint256 deadline
) external returns (uint256 amountToken, uint256 amountETH);
function removeLiquidityWithPermit(
address tokenA,
address tokenB,
uint256 liquidity,
uint256 amountAMin,
uint256 amountBMin,
address to,
uint256 deadline,
bool approveMax,
uint8 v,
bytes32 r,
bytes32 s
) external returns (uint256 amountA, uint256 amountB);
function removeLiquidityETHWithPermit(
address token,
uint256 liquidity,
uint256 amountTokenMin,
uint256 amountETHMin,
address to,
uint256 deadline,
bool approveMax,
uint8 v,
bytes32 r,
bytes32 s
) external returns (uint256 amountToken, uint256 amountETH);
function swapExactTokensForTokens(
uint256 amountIn,
uint256 amountOutMin,
address[] calldata path,
address to,
uint256 deadline
) external returns (uint256[] memory amounts);
function swapTokensForExactTokens(
uint256 amountOut,
uint256 amountInMax,
address[] calldata path,
address to,
uint256 deadline
) external returns (uint256[] memory amounts);
function swapExactETHForTokens(
uint256 amountOutMin,
address[] calldata path,
address to,
uint256 deadline
) external payable returns (uint256[] memory amounts);
function swapTokensForExactETH(
uint256 amountOut,
uint256 amountInMax,
address[] calldata path,
address to,
uint256 deadline
) external returns (uint256[] memory amounts);
function swapExactTokensForETH(
uint256 amountIn,
uint256 amountOutMin,
address[] calldata path,
address to,
uint256 deadline
) external returns (uint256[] memory amounts);
function swapETHForExactTokens(
uint256 amountOut,
address[] calldata path,
address to,
uint256 deadline
) external payable returns (uint256[] memory amounts);
function quote(
uint256 amountA,
uint256 reserveA,
uint256 reserveB
) external pure returns (uint256 amountB);
function getAmountOut(
uint256 amountIn,
uint256 reserveIn,
uint256 reserveOut
) external pure returns (uint256 amountOut);
function getAmountIn(
uint256 amountOut,
uint256 reserveIn,
uint256 reserveOut
) external pure returns (uint256 amountIn);
function getAmountsOut(uint256 amountIn, address[] calldata path)
external
view
returns (uint256[] memory amounts);
function getAmountsIn(uint256 amountOut, address[] calldata path)
external
view
returns (uint256[] memory amounts);
}
interface IUniswapRouter02 is IUniswapRouter01 {
function swapExactTokensForTokensSupportingFeeOnTransferTokens(
uint256 amountIn,
uint256 amountOutMin,
address[] calldata path,
address to,
uint256 deadline
) external;
function swapExactETHForTokensSupportingFeeOnTransferTokens(
uint256 amountOutMin,
address[] calldata path,
address to,
uint256 deadline
) external payable;
function swapExactTokensForETHSupportingFeeOnTransferTokens(
uint256 amountIn,
uint256 amountOutMin,
address[] calldata path,
address to,
uint256 deadline
) external;
}
interface IFactory {
event PairCreated(
address indexed token0,
address indexed token1,
address pair,
uint256
);
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(uint256) external view returns (address pair);
function allPairsLength() external view returns (uint256);
function createPair(address tokenA, address tokenB)
external
returns (address pair);
function setFeeTo(address) external;
function setFeeToSetter(address) external;
function INIT_CODE_PAIR_HASH() external view returns (bytes32);
}
abstract contract Context {
//function _msgSender() internal view virtual returns (address payable) {
function _msgSender() internal view virtual returns (address) {
return msg.sender;
}
function _msgData() internal view virtual returns (bytes memory) {
this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691
return msg.data;
}
}
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 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 {
_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);
}
}
library Address {
/**
* @dev Returns true if `account` is a contract.
*
* [IMPORTANT]
* ====
* It is unsafe to assume that an address for which this function returns
* false is an externally-owned account (EOA) and not a contract.
*
* Among others, `isContract` will return false for the following
* types of addresses:
*
* - an externally-owned account
* - a contract in construction
* - an address where a contract will be created
* - an address where a contract lived, but was destroyed
* ====
*
* [IMPORTANT]
* ====
* You shouldn't rely on `isContract` to protect against flash loan attacks!
*
* Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets
* like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract
* constructor.
* ====
*/
function isContract(address account) internal view returns (bool) {
// This method relies on extcodesize/address.code.length, which returns 0
// for contracts in construction, since the code is only stored at the end
// of the constructor execution.
return account.code.length > 0;
}
/**
* @dev Replacement for Solidity's `transfer`: sends `amount` wei to
* `recipient`, forwarding all available gas and reverting on errors.
*
* https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
* of certain opcodes, possibly making contracts go over the 2300 gas limit
* imposed by `transfer`, making them unable to receive funds via
* `transfer`. {sendValue} removes this limitation.
*
* https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
*
* IMPORTANT: because control is transferred to `recipient`, care must be
* taken to not create reentrancy vulnerabilities. Consider using
* {ReentrancyGuard} or the
* https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
*/
function sendValue(address payable recipient, uint256 amount) internal {
require(
address(this).balance >= amount,
"Address: insufficient balance"
);
(bool success, ) = recipient.call{value: amount}("");
require(
success,
"Address: unable to send value, recipient may have reverted"
);
}
/**
* @dev Performs a Solidity function call using a low level `call`. A
* plain `call` is an unsafe replacement for a function call: use this
* function instead.
*
* If `target` reverts with a revert reason, it is bubbled up by this
* function (like regular Solidity function calls).
*
* Returns the raw returned data. To convert to the expected return value,
* use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
*
* Requirements:
*
* - `target` must be a contract.
* - calling `target` with `data` must not revert.
*
* _Available since v3.1._
*/
function functionCall(address target, bytes memory data)
internal
returns (bytes memory)
{
return functionCall(target, data, "Address: low-level call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
* `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCall(
address target,
bytes memory data,
string memory errorMessage
) internal returns (bytes memory) {
return functionCallWithValue(target, data, 0, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but also transferring `value` wei to `target`.
*
* Requirements:
*
* - the calling contract must have an ETH balance of at least `value`.
* - the called Solidity function must be `payable`.
*
* _Available since v3.1._
*/
function functionCallWithValue(
address target,
bytes memory data,
uint256 value
) internal returns (bytes memory) {
return
functionCallWithValue(
target,
data,
value,
"Address: low-level call with value failed"
);
}
/**
* @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
* with `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCallWithValue(
address target,
bytes memory data,
uint256 value,
string memory errorMessage
) internal returns (bytes memory) {
require(
address(this).balance >= value,
"Address: insufficient balance for call"
);
require(isContract(target), "Address: call to non-contract");
(bool success, bytes memory returndata) = target.call{value: value}(
data
);
return verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but performing a static call.
*
* _Available since v3.3._
*/
function functionStaticCall(address target, bytes memory data)
internal
view
returns (bytes memory)
{
return
functionStaticCall(
target,
data,
"Address: low-level static call failed"
);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
* but performing a static call.
*
* _Available since v3.3._
*/
function functionStaticCall(
address target,
bytes memory data,
string memory errorMessage
) internal view returns (bytes memory) {
require(isContract(target), "Address: static call to non-contract");
(bool success, bytes memory returndata) = target.staticcall(data);
return verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but performing a delegate call.
*
* _Available since v3.4._
*/
function functionDelegateCall(address target, bytes memory data)
internal
returns (bytes memory)
{
return
functionDelegateCall(
target,
data,
"Address: low-level delegate call failed"
);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
* but performing a delegate call.
*
* _Available since v3.4._
*/
function functionDelegateCall(
address target,
bytes memory data,
string memory errorMessage
) internal returns (bytes memory) {
require(isContract(target), "Address: delegate call to non-contract");
(bool success, bytes memory returndata) = target.delegatecall(data);
return verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the
* revert reason using the provided one.
*
* _Available since v4.3._
*/
function verifyCallResult(
bool success,
bytes memory returndata,
string memory errorMessage
) internal pure returns (bytes memory) {
if (success) {
return returndata;
} else {
// Look for revert reason and bubble it up if present
if (returndata.length > 0) {
// The easiest way to bubble the revert reason is using memory via assembly
assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
} else {
revert(errorMessage);
}
}
}
}
library SafeERC20 {
using Address for address;
function safeTransfer(
IERC20 token,
address to,
uint256 value
) internal {
_callOptionalReturn(
token,
abi.encodeWithSelector(token.transfer.selector, to, value)
);
}
function safeTransferFrom(
IERC20 token,
address from,
address to,
uint256 value
) internal {
_callOptionalReturn(
token,
abi.encodeWithSelector(token.transferFrom.selector, from, to, value)
);
}
/**
* @dev Deprecated. This function has issues similar to the ones found in
* {IERC20-approve}, and its usage is discouraged.
*
* Whenever possible, use {safeIncreaseAllowance} and
* {safeDecreaseAllowance} instead.
*/
function safeApprove(
IERC20 token,
address spender,
uint256 value
) internal {
// safeApprove should only be called when setting an initial allowance,
// or when resetting it to zero. To increase and decrease it, use
// 'safeIncreaseAllowance' and 'safeDecreaseAllowance'
require(
(value == 0) || (token.allowance(address(this), spender) == 0),
"SafeERC20: approve from non-zero to non-zero allowance"
);
_callOptionalReturn(
token,
abi.encodeWithSelector(token.approve.selector, spender, value)
);
}
function safeIncreaseAllowance(
IERC20 token,
address spender,
uint256 value
) internal {
uint256 newAllowance = token.allowance(address(this), spender) + value;
_callOptionalReturn(
token,
abi.encodeWithSelector(
token.approve.selector,
spender,
newAllowance
)
);
}
function safeDecreaseAllowance(
IERC20 token,
address spender,
uint256 value
) internal {
unchecked {
uint256 oldAllowance = token.allowance(address(this), spender);
require(
oldAllowance >= value,
"SafeERC20: decreased allowance below zero"
);
uint256 newAllowance = oldAllowance - value;
_callOptionalReturn(
token,
abi.encodeWithSelector(
token.approve.selector,
spender,
newAllowance
)
);
}
}
/**
* @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement
* on the return value: the return value is optional (but if data is returned, it must not be false).
* @param token The token targeted by the call.
* @param data The call data (encoded using abi.encode or one of its variants).
*/
function _callOptionalReturn(IERC20 token, bytes memory data) private {
// We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since
// we're implementing it ourselves. We use {Address.functionCall} to perform this call, which verifies that
// the target address contains contract code and also asserts for success in the low-level call.
bytes memory returndata = address(token).functionCall(
data,
"SafeERC20: low-level call failed"
);
if (returndata.length > 0) {
// Return data is optional
require(
abi.decode(returndata, (bool)),
"SafeERC20: ERC20 operation did not succeed"
);
}
}
}
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);
}
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);
}
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:
*
* - `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 `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:
*
* - `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;
}
_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;
_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 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 {}
}
interface uniswapV2Pair {
function getReserves()
external
view
returns (
uint112 reserve0,
uint112 reserve1,
uint32 blockTimestampLast
);
}
contract MMAI is ERC20, Ownable {
address payable public marketingFeeAddress;
address payable public devFeeAddress;
address payable public aiFeeAddress;
uint16 constant maxFeeLimit = 300;
bool public tradingActive;
uint256 highTaxPeriod = 10;
uint256 launchTime;
mapping(address => bool) public isExcludedFromFee;
mapping(address => uint256) lastSold;
// these values are pretty much arbitrary since they get overwritten for every txn, but the placeholders make it easier to work with current contract.
uint256 private _devFee;
uint256 private _previousDevFee;
uint256 private _liquidityFee;
uint256 private _previousLiquidityFee;
uint256 private _marketingFee;
uint256 private _previousMarketingFee;
uint256 private _aiFee;
uint256 private _previousAIFee;
uint16 public buyDevFee = 20;
uint16 public buyLiquidityFee = 30;
uint16 public buyMarketingFee = 10;
uint16 public buyAIFee = 40;
uint16 public sellDevFee = 20;
uint16 public sellLiquidityFee = 30;
uint16 public sellMarketingFee = 10;
uint16 public sellAIFee = 40;
uint16 public transferDevFee = 0;
uint16 public transferLiquidityFee = 0;
uint16 public transferMarketingFee = 0;
uint16 public transferAIFee = 0;
uint256 private _liquidityTokensToSwap;
uint256 private _marketingFeeTokensToSwap;
uint256 private _devFeeTokens;
uint256 private _aiFeeTokens;
uint256 public extraLPTax = 80;
uint256 public diamondHandPeriod = 4 weeks;
mapping(address => bool) public automatedMarketMakerPairs;
uint256 public minimumFeeTokensToTake;
IUniswapRouter02 public immutable uniswapRouter;
address public immutable uniswapPair;
bool inSwapAndLiquify;
address public bridgeAddress;
modifier lockTheSwap() {
inSwapAndLiquify = true;
_;
inSwapAndLiquify = false;
}
function setHighTaxPeriod(uint256 n) external onlyOwner {
highTaxPeriod = n;
}
constructor() ERC20("MetamonkeyAi", "MMAI") {
_mint(msg.sender, 1e10 * 10**decimals());
marketingFeeAddress = payable(
0xeCCfBA746348Aa32AFE11A14E8bd36A1b06F1393
);
devFeeAddress = payable(0x1071A02AF39E0eF4D245b0b21550FCC28e8307eC);
aiFeeAddress = payable(0xC1d2a0ab2b29757C9A86A1F0ECC722e356d69Bd5);
minimumFeeTokensToTake = 1e7 * 10**decimals();
address routerAddress = 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D;
uniswapRouter = IUniswapRouter02(payable(routerAddress));
uniswapPair = IFactory(uniswapRouter.factory()).createPair(
address(this),
uniswapRouter.WETH()
);
isExcludedFromFee[_msgSender()] = true;
isExcludedFromFee[address(this)] = true;
isExcludedFromFee[marketingFeeAddress] = true;
isExcludedFromFee[devFeeAddress] = true;
isExcludedFromFee[aiFeeAddress] = true;
_limits[msg.sender].isExcluded = true;
_limits[address(this)].isExcluded = true;
_limits[routerAddress].isExcluded = true;
globalLimit = 10 * 10**18; // 10 ** 18 = 1 ETH limit
globalLimitPeriod = 24 hours;
_approve(msg.sender, routerAddress, ~uint256(0));
_setAutomatedMarketMakerPair(uniswapPair, true);
bridgeAddress = 0x4c03Cf0301F2ef59CC2687b82f982A2A01C00Ee2;
}
function migrateBridge(address newAddress) external onlyOwner {
require(newAddress != address(0), "cant be zero address");
bridgeAddress = newAddress;
}
function decimals() public pure override returns (uint8) {
return 7;
}
function enableTrading() external onlyOwner {
require(!tradingActive, "already enabled");
tradingActive = true;
launchTime = block.timestamp;
}
function totalSupply() public view override returns (uint256) {
return super.totalSupply() - bridgeBalance();
}
function balanceOf(address account) public view override returns (uint256) {
if (account == bridgeAddress) return 0;
return super.balanceOf(account);
}
function bridgeBalance() public view returns (uint256) {
return super.balanceOf(bridgeAddress);
}
function setBridgeAddress(address a) external onlyOwner {
require(a != address(0), "Can't set 0");
bridgeAddress = a;
}
function updateMinimumTokensBeforeFeeTaken(uint256 _minimumFeeTokensToTake)
external
onlyOwner
{
minimumFeeTokensToTake = _minimumFeeTokensToTake * (10**decimals());
}
function setAutomatedMarketMakerPair(address pair, bool value)
external
onlyOwner
{
require(pair != uniswapPair, "The pair cannot be removed");
_setAutomatedMarketMakerPair(pair, value);
}
function _setAutomatedMarketMakerPair(address pair, bool value) private {
automatedMarketMakerPairs[pair] = value;
}
function excludeFromFee(address account) external onlyOwner {
isExcludedFromFee[account] = true;
}
function includeInFee(address account) external onlyOwner {
isExcludedFromFee[account] = false;
}
function updateBuyFee(
uint16 _buyDevFee,
uint16 _buyLiquidityFee,
uint16 _buyMarketingFee,
uint16 _buyAIFee
) external onlyOwner {
buyDevFee = _buyDevFee;
buyLiquidityFee = _buyLiquidityFee;
buyMarketingFee = _buyMarketingFee;
buyAIFee = _buyAIFee;
require(
_buyDevFee + _buyLiquidityFee + _buyMarketingFee + _buyAIFee <=
maxFeeLimit,
"Must keep fees below 30%"
);
}
function updateSellFee(
uint16 _sellDevFee,
uint16 _sellLiquidityFee,
uint16 _sellMarketingFee,
uint16 _sellAIFee
) external onlyOwner {
sellDevFee = _sellDevFee;
sellLiquidityFee = _sellLiquidityFee;
sellMarketingFee = _sellMarketingFee;
sellAIFee = _sellAIFee;
require(
_sellDevFee + _sellLiquidityFee + _sellMarketingFee + _sellAIFee <=
maxFeeLimit,
"Must keep fees <= 30%"
);
}
function updateTransferFee(
uint16 _transferDevFee,
uint16 _transferLiquidityFee,
uint16 _transferMarketingFee,
uint16 _transferAIfee
) external onlyOwner {
transferDevFee = _transferDevFee;
transferLiquidityFee = _transferLiquidityFee;
transferMarketingFee = _transferMarketingFee;
transferAIFee = _transferAIfee;
require(
_transferDevFee +
_transferLiquidityFee +
_transferMarketingFee +
_transferAIfee <=
maxFeeLimit,
"Must keep fees <= 30%"
);
}
function updateMarketingFeeAddress(address a) external onlyOwner {
require(a != address(0), "Can't set 0");
marketingFeeAddress = payable(a);
}
function updateDevAddress(address a) external onlyOwner {
require(a != address(0), "Can't set 0");
devFeeAddress = payable(a);
}
function updateAIAddress(address a) external onlyOwner {
require(a != address(0), "Can't set 0");
aiFeeAddress = payable(a);
}
function setExtraLPTax(uint256 n) external onlyOwner {
require(extraLPTax <= 100, "Too much");
extraLPTax = n;
}
function _transfer(
address from,
address to,
uint256 amount
) internal override {
if (!tradingActive) {
require(
isExcludedFromFee[from] || isExcludedFromFee[to],
"Trading is not active yet."
);
}
if (lastSold[from] == 0) {
lastSold[from] = block.timestamp;
}
checkLiquidity();
uint256 contractTokenBalance = balanceOf(address(this));
bool overMinimumTokenBalance = contractTokenBalance >=
minimumFeeTokensToTake;
// Take Fee
if (
!inSwapAndLiquify &&
overMinimumTokenBalance &&
automatedMarketMakerPairs[to]
) {
takeFee();
}
removeAllFee();
// If any account belongs to isExcludedFromFee account then remove the fee
if (!isExcludedFromFee[from] && !isExcludedFromFee[to]) {
// High tax period
if (launchTime + highTaxPeriod >= block.timestamp) {
_devFee = (amount * 25) / 1000;
_liquidityFee = (amount * 24) / 1000;
_marketingFee = (amount * 25) / 1000;
_aiFee = (amount * 25) / 1000;
} else {
// Buy
if (automatedMarketMakerPairs[from]) {
_devFee = (amount * buyDevFee) / 1000;
_liquidityFee = (amount * buyLiquidityFee) / 1000;
_marketingFee = (amount * buyMarketingFee) / 1000;
_aiFee = (amount * buyAIFee) / 1000;
}
// Sell
else if (automatedMarketMakerPairs[to]) {
uint256 plus;
// People who sell within diamondHandPeriod will have to pay extra taxes, which go to LP.
if (lastSold[from] + diamondHandPeriod >= block.timestamp) {
plus += extraLPTax;
}
_devFee = (amount * sellDevFee) / 1000;
_liquidityFee = (amount * (sellLiquidityFee + plus)) / 1000;
_marketingFee = (amount * sellMarketingFee) / 1000;
_aiFee = (amount * sellAIFee) / 1000;
lastSold[from] = block.timestamp; // for the holder extra tax
} else {
_devFee = (amount * transferDevFee) / 1000;
_liquidityFee = (amount * transferLiquidityFee) / 1000;
_marketingFee = (amount * transferMarketingFee) / 1000;
_aiFee = (amount * transferAIFee) / 1000;
}
}
if (
hasLiquidity &&
!inSwapAndLiquify &&
!automatedMarketMakerPairs[from] &&
!_limits[to].isExcluded
) {
_handleLimited(
from,
amount - _devFee - _liquidityFee - _marketingFee - _aiFee
);
}
}
uint256 _transferAmount = amount -
_devFee -
_liquidityFee -
_marketingFee -
_aiFee;
super._transfer(from, to, _transferAmount);
uint256 _feeTotal = _devFee + _liquidityFee + _marketingFee + _aiFee;
if (_feeTotal > 0) {
super._transfer(from, address(this), _feeTotal);
_liquidityTokensToSwap += _liquidityFee;
_marketingFeeTokensToSwap += _marketingFee;
_devFeeTokens += _devFee;
_aiFeeTokens += _aiFee;
}
restoreAllFee();
}
function removeAllFee() private {
if (
_devFee == 0 &&
_liquidityFee == 0 &&
_marketingFee == 0 &&
_aiFee == 0
) return;
_previousDevFee = _devFee;
_previousLiquidityFee = _liquidityFee;
_previousMarketingFee = _marketingFee;
_previousAIFee = _aiFee;
_devFee = 0;
_liquidityFee = 0;
_marketingFee = 0;
_aiFee = 0;
}
function restoreAllFee() private {
_devFee = _previousDevFee;
_liquidityFee = _previousLiquidityFee;
_marketingFee = _previousMarketingFee;
_aiFee = _previousAIFee;
}
function setDiamondHandPeriod(uint256 n) external onlyOwner {
diamondHandPeriod = n;
}
function takeFee() private lockTheSwap {
uint256 contractBalance = balanceOf(address(this));
uint256 totalTokensTaken = _liquidityTokensToSwap +
_marketingFeeTokensToSwap +
_devFeeTokens +
_aiFeeTokens;
if (totalTokensTaken == 0 || contractBalance < totalTokensTaken) {
return;
}
uint256 tokensForLiquidity = _liquidityTokensToSwap / 2;
uint256 initialETHBalance = address(this).balance;
uint256 toSwap = tokensForLiquidity +
_marketingFeeTokensToSwap +
_devFeeTokens +
_aiFeeTokens;
swapTokensForETH(toSwap);
uint256 ethBalance = address(this).balance - initialETHBalance;
uint256 ethForMarketing = (ethBalance * _marketingFeeTokensToSwap) /
toSwap;
uint256 ethForLiquidity = (ethBalance * tokensForLiquidity) / toSwap;
uint256 ethForDev = (ethBalance * _devFeeTokens) / toSwap;
uint256 ethForAI = (ethBalance * _aiFeeTokens) / toSwap;
if (tokensForLiquidity > 0 && ethForLiquidity > 0) {
addLiquidity(tokensForLiquidity, ethForLiquidity);
}
bool success;
(success, ) = address(marketingFeeAddress).call{
value: ethForMarketing,
gas:50000
}("");
(success, ) = address(devFeeAddress).call{
value: ethForDev,
gas:50000
}("");
(success, ) = address(aiFeeAddress).call{
value: ethForAI,
gas:50000
}("");
_liquidityTokensToSwap = 0;
_marketingFeeTokensToSwap = 0;
_devFeeTokens = 0;
_aiFeeTokens = 0;
}
function swapTokensForETH(uint256 tokenAmount) private {
address[] memory path = new address[](2);
path[0] = address(this);
path[1] = uniswapRouter.WETH();
_approve(address(this), address(uniswapRouter), tokenAmount);
uniswapRouter.swapExactTokensForETHSupportingFeeOnTransferTokens(
tokenAmount,
0,
path,
address(this),
block.timestamp
);
}
function addLiquidity(uint256 tokenAmount, uint256 ethAmount) private {
_approve(address(this), address(uniswapRouter), tokenAmount);
uniswapRouter.addLiquidityETH{value: ethAmount}(
address(this),
tokenAmount,
0, // slippage is unavoidable
0, // slippage is unavoidable
owner(),
block.timestamp
);
}
receive() external payable {}
// Limits
mapping(address => LimitedWallet) private _limits;
uint256 public globalLimit; // limit over timeframe for all
uint256 public globalLimitPeriod; // timeframe for all
bool public globalLimitsActive;
bool private hasLiquidity;
struct LimitedWallet {
uint256[] sellAmounts;
uint256[] sellTimestamps;
uint256 limitPeriod; // ability to set custom values for individual wallets
uint256 limitETH; // ability to set custom values for individual wallets
bool isExcluded;
}
function setGlobalLimit(uint256 newLimit) external onlyOwner {
require(newLimit >= 1 ether, "Too low");
globalLimit = newLimit;
}
function setGlobalLimitPeriod(uint256 newPeriod) external onlyOwner {
require(newPeriod <= 1 weeks, "Too long");
globalLimitPeriod = newPeriod;
}
function setGlobalLimitsActiveStatus(bool status) external onlyOwner {
globalLimitsActive = status;
}
function getLimits(address _address)
external
view
returns (LimitedWallet memory)
{
return _limits[_address];
}
function removeLimits(address[] calldata addresses) external onlyOwner {
for (uint256 i; i < addresses.length; i++) {
address account = addresses[i];
_limits[account].limitPeriod = 0;
_limits[account].limitETH = 0;
}
}
// Set custom limits for an address. Defaults to 0, thus will use the "globalLimitPeriod" and "globalLimitETH" if we don't set them
function setLimits(
address[] calldata addresses,
uint256[] calldata limitPeriods,
uint256[] calldata limitsETH
) external onlyOwner {
require(
addresses.length == limitPeriods.length &&
limitPeriods.length == limitsETH.length,
"Array lengths don't match"
);
for (uint256 i = 0; i < addresses.length; i++) {
if (limitPeriods[i] == 0 && limitsETH[i] == 0) continue;
_limits[addresses[i]].limitPeriod = limitPeriods[i];
_limits[addresses[i]].limitETH = limitsETH[i];
}
}
function addExcludedFromLimits(address[] calldata addresses)
external
onlyOwner
{
for (uint256 i = 0; i < addresses.length; i++) {
_limits[addresses[i]].isExcluded = true;
}
}
function removeExcludedFromLimits(address[] calldata addresses)
external
onlyOwner
{
require(addresses.length <= 1000, "Array too long");
for (uint256 i = 0; i < addresses.length; i++) {
_limits[addresses[i]].isExcluded = false;
}
}
// Can be used to check how much a wallet sold in their timeframe
function getSoldLastPeriod(address _address)
public
view
returns (uint256 sellAmount)
{
uint256 numberOfSells = _limits[_address].sellAmounts.length;
if (numberOfSells == 0) {
return sellAmount;
}
uint256 limitPeriod = _limits[_address].limitPeriod == 0
? globalLimitPeriod
: _limits[_address].limitPeriod;
while (true) {
if (numberOfSells == 0) {
break;
}
numberOfSells--;
uint256 sellTimestamp = _limits[_address].sellTimestamps[
numberOfSells
];
if (block.timestamp - limitPeriod <= sellTimestamp) {
sellAmount += _limits[_address].sellAmounts[numberOfSells];
} else {
break;
}
}
}
function checkLiquidity() internal {
(uint256 r1, uint256 r2, ) = uniswapV2Pair(uniswapPair).getReserves();
hasLiquidity = r1 > 0 && r2 > 0 ? true : false;
}
function getETHValue(uint256 tokenAmount)
public
view
returns (uint256 ethValue)
{
address[] memory path = new address[](2);
path[0] = address(this);
path[1] = uniswapRouter.WETH();
ethValue = uniswapRouter.getAmountsOut(tokenAmount, path)[1];
}
// Handle private sale wallets
function _handleLimited(address from, uint256 taxedAmount) private {
if (_limits[from].isExcluded || !globalLimitsActive) {
return;
}
uint256 ethValue = getETHValue(taxedAmount);
_limits[from].sellTimestamps.push(block.timestamp);
_limits[from].sellAmounts.push(ethValue);
uint256 soldAmountLastPeriod = getSoldLastPeriod(from);
uint256 limit = _limits[from].limitETH == 0
? globalLimit
: _limits[from].limitETH;
require(
soldAmountLastPeriod <= limit,
"Amount over the limit for time period"
);
}
function withdrawETH() external onlyOwner {
payable(owner()).transfer(address(this).balance);
}
function withdrawTokens(IERC20 tokenAddress, address walletAddress)
external
onlyOwner
{
require(
walletAddress != address(0),
"walletAddress can't be 0 address"
);
SafeERC20.safeTransfer(
tokenAddress,
walletAddress,
tokenAddress.balanceOf(address(this))
);
}
}