Contract Source Code:
File 1 of 1 : BabyCramer
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.9;
library SafeMath {
/**
* @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) {
uint256 c = a + b;
require(c >= a, "SafeMath: addition overflow");
return c;
}
/**
* @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 sub(a, b, "SafeMath: subtraction overflow");
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting with custom message on
* overflow (when the result is negative).
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
*
* - Subtraction cannot overflow.
*/
function sub(
uint256 a,
uint256 b,
string memory errorMessage
) internal pure returns (uint256) {
require(b <= a, errorMessage);
uint256 c = a - b;
return c;
}
/**
* @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) {
// 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 0;
}
uint256 c = a * b;
require(c / a == b, "SafeMath: multiplication overflow");
return c;
}
/**
* @dev Returns the integer division of two unsigned integers. Reverts 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) internal pure returns (uint256) {
return div(a, b, "SafeMath: division by zero");
}
/**
* @dev Returns the integer division of two unsigned integers. Reverts 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) {
require(b > 0, errorMessage);
uint256 c = a / b;
// assert(a == b * c + a % b); // There is no case in which this doesn't hold
return c;
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* Reverts 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 mod(a, b, "SafeMath: modulo by zero");
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* Reverts with custom message 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,
string memory errorMessage
) internal pure returns (uint256) {
require(b != 0, errorMessage);
return a % b;
}
}
abstract contract Context {
function _msgSender() internal view virtual returns (address) {
return msg.sender;
}
function _msgData() internal view virtual returns (bytes calldata) {
this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691
return msg.data;
}
}
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() {
address msgSender = _msgSender();
_owner = msgSender;
emit OwnershipTransferred(address(0), msgSender);
}
/**
* @dev Returns the address of the current owner.
*/
function owner() public view 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 {
emit OwnershipTransferred(_owner, address(0));
_owner = 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"
);
emit OwnershipTransferred(_owner, newOwner);
_owner = newOwner;
}
}
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;
}
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;
}
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);
}
// pragma solidity >=0.6.2;
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;
}
interface IERC20 {
/**
* @dev Returns the amount of tokens in existence.
*/
function totalSupply() external view returns (uint256);
/**
* @dev Returns the amount of tokens owned by `account`.
*/
function balanceOf(address account) external view returns (uint256);
/**
* @dev Moves `amount` tokens from the caller's account to `recipient`.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transfer(address recipient, uint256 amount)
external
returns (bool);
/**
* @dev Returns the remaining number of tokens that `spender` will be
* allowed to spend on behalf of `owner` through {transferFrom}. This is
* zero by default.
*
* This value changes when {approve} or {transferFrom} are called.
*/
function allowance(address owner, address spender)
external
view
returns (uint256);
/**
* @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* IMPORTANT: Beware that changing an allowance with this method brings the risk
* that someone may use both the old and the new allowance by unfortunate
* transaction ordering. One possible solution to mitigate this race
* condition is to first reduce the spender's allowance to 0 and set the
* desired value afterwards:
* https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
*
* Emits an {Approval} event.
*/
function approve(address spender, uint256 amount) external returns (bool);
/**
* @dev Moves `amount` tokens from `sender` to `recipient` using the
* allowance mechanism. `amount` is then deducted from the caller's
* allowance.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transferFrom(
address sender,
address recipient,
uint256 amount
) external returns (bool);
/**
* @dev Emitted when `value` tokens are moved from one account (`from`) to
* another (`to`).
*
* Note that `value` may be zero.
*/
event Transfer(address indexed from, address indexed to, uint256 value);
/**
* @dev Emitted when the allowance of a `spender` for an `owner` is set by
* a call to {approve}. `value` is the new allowance.
*/
event Approval(
address indexed owner,
address indexed spender,
uint256 value
);
}
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 {
using SafeMath for uint256;
mapping(address => uint256) private _balances;
mapping(address => mapping(address => uint256)) private _allowances;
uint256 private _totalSupply;
string private _name;
string private _symbol;
/**
* @dev Sets the values for {name} and {symbol}.
*
* The default value of {decimals} is 18. To select a different value for
* {decimals} you should overload it.
*
* All two of these values are immutable: they can only be set once during
* construction.
*/
constructor(string memory name_, string memory symbol_) {
_name = name_;
_symbol = symbol_;
}
/**
* @dev Returns the name of the token.
*/
function name() public view virtual override returns (string memory) {
return _name;
}
/**
* @dev Returns the symbol of the token, usually a shorter version of the
* name.
*/
function symbol() public view virtual override returns (string memory) {
return _symbol;
}
/**
* @dev Returns the number of decimals used to get its user representation.
* For example, if `decimals` equals `2`, a balance of `505` tokens should
* be displayed to a user as `5,05` (`505 / 10 ** 2`).
*
* Tokens usually opt for a value of 18, imitating the relationship between
* Ether and Wei. This is the value {ERC20} uses, unless this function is
* overridden;
*
* NOTE: This information is only used for _display_ purposes: it in
* no way affects any of the arithmetic of the contract, including
* {IERC20-balanceOf} and {IERC20-transfer}.
*/
function decimals() public view virtual override returns (uint8) {
return 18;
}
/**
* @dev See {IERC20-totalSupply}.
*/
function totalSupply() public view virtual override returns (uint256) {
return _totalSupply;
}
/**
* @dev See {IERC20-balanceOf}.
*/
function balanceOf(address account)
public
view
virtual
override
returns (uint256)
{
return _balances[account];
}
/**
* @dev See {IERC20-transfer}.
*
* Requirements:
*
* - `recipient` cannot be the zero address.
* - the caller must have a balance of at least `amount`.
*/
function transfer(address recipient, uint256 amount)
public
virtual
override
returns (bool)
{
_transfer(_msgSender(), recipient, amount);
return true;
}
/**
* @dev See {IERC20-allowance}.
*/
function allowance(address owner, address spender)
public
view
virtual
override
returns (uint256)
{
return _allowances[owner][spender];
}
/**
* @dev See {IERC20-approve}.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function approve(address spender, uint256 amount)
public
virtual
override
returns (bool)
{
_approve(_msgSender(), spender, amount);
return true;
}
/**
* @dev See {IERC20-transferFrom}.
*
* Emits an {Approval} event indicating the updated allowance. This is not
* required by the EIP. See the note at the beginning of {ERC20}.
*
* Requirements:
*
* - `sender` and `recipient` cannot be the zero address.
* - `sender` must have a balance of at least `amount`.
* - the caller must have allowance for ``sender``'s tokens of at least
* `amount`.
*/
function transferFrom(
address sender,
address recipient,
uint256 amount
) public virtual override returns (bool) {
_transfer(sender, recipient, amount);
_approve(
sender,
_msgSender(),
_allowances[sender][_msgSender()].sub(
amount,
"ERC20: transfer amount exceeds allowance"
)
);
return true;
}
/**
* @dev Atomically increases the allowance granted to `spender` by the caller.
*
* This is an alternative to {approve} that can be used as a mitigation for
* problems described in {IERC20-approve}.
*
* Emits an {Approval} event indicating the updated allowance.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function increaseAllowance(address spender, uint256 addedValue)
public
virtual
returns (bool)
{
_approve(
_msgSender(),
spender,
_allowances[_msgSender()][spender].add(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)
{
_approve(
_msgSender(),
spender,
_allowances[_msgSender()][spender].sub(
subtractedValue,
"ERC20: decreased allowance below zero"
)
);
return true;
}
/**
* @dev Moves tokens `amount` from `sender` to `recipient`.
*
* This is internal function is equivalent to {transfer}, and can be used to
* e.g. implement automatic token fees, slashing mechanisms, etc.
*
* Emits a {Transfer} event.
*
* Requirements:
*
* - `sender` cannot be the zero address.
* - `recipient` cannot be the zero address.
* - `sender` must have a balance of at least `amount`.
*/
function _transfer(
address sender,
address recipient,
uint256 amount
) internal virtual {
require(sender != address(0), "ERC20: transfer from the zero address");
require(recipient != address(0), "ERC20: transfer to the zero address");
_beforeTokenTransfer(sender, recipient, amount);
_balances[sender] = _balances[sender].sub(
amount,
"ERC20: transfer amount exceeds balance"
);
_balances[recipient] = _balances[recipient].add(amount);
emit Transfer(sender, recipient, amount);
}
/** @dev Creates `amount` tokens and assigns them to `account`, increasing
* the total supply.
*
* Emits a {Transfer} event with `from` set to the zero address.
*
* Requirements:
*
* - `account` cannot be the zero address.
*/
function _mint(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: mint to the zero address");
_beforeTokenTransfer(address(0), account, amount);
_totalSupply = _totalSupply.add(amount);
_balances[account] = _balances[account].add(amount);
emit Transfer(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.
*/
/**
* @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens.
*
* This internal function is equivalent to `approve`, and can be used to
* e.g. set automatic allowances for certain subsystems, etc.
*
* Emits an {Approval} event.
*
* Requirements:
*
* - `owner` cannot be the zero address.
* - `spender` cannot be the zero address.
*/
function _approve(
address owner,
address spender,
uint256 amount
) internal virtual {
require(owner != address(0), "ERC20: approve from the zero address");
require(spender != address(0), "ERC20: approve to the zero address");
_allowances[owner][spender] = amount;
emit Approval(owner, spender, amount);
}
/**
* @dev Hook that is called before any transfer of tokens. This includes
* minting and burning.
*
* Calling conditions:
*
* - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
* will be to 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 {}
}
contract USDCManager is Ownable {
address public immutable USDC = 0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48;
function transferUSDC(address _to) external onlyOwner {
IERC20 usdcContract = IERC20(USDC);
uint256 _balance = usdcContract.balanceOf(address(this));
require(usdcContract.transfer(_to, _balance) == true);
}
}
contract BabyCramer is ERC20, Ownable {
using SafeMath for uint256;
IUniswapV2Router02 public uniswapV2Router;
address public immutable uniswapV2Pair;
bool private swapping;
address public liquidityWallet;
address public immutable deadAddress =
0x000000000000000000000000000000000000dEaD;
address public immutable USDC = 0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48;
USDCManager public usdcManager;
uint256 public maxSellTransactionAmount = 100000000 * (10**18);
uint256 public swapTokensAtAmount = 20000;
uint256 public burnFees;
uint256 public devFees;
uint256 public marketingFees;
address payable marketingWallet =
payable(0x5D8516b76022A4f5888CC35fBF8117060D8aA082);
address payable devWallet =
payable(0x5D8516b76022A4f5888CC35fBF8117060D8aA082);
uint256 public liquidityFee;
uint256 public totalFees;
bool public swapAndLiquifyEnabled = false;
bool public limitsInEffect = true;
bool public transferDelayEnabled = true;
// mapping(address => uint256) private _holderLastTransferTimestamp;
mapping(address => bool) public _isExcludedMaxTransactionAmount;
uint256 public maxWallet;
uint256 public maxTransactionAmount;
// exlcude from fees and max transaction amount
mapping(address => bool) private _isExcludedFromFees;
// store addresses that a automatic market maker pairs. Any transfer *to* these addresses
// could be subject to a maximum transfer amount
mapping(address => bool) public automatedMarketMakerPairs;
event UpdateUniswapV2Router(
address indexed newAddress,
address indexed oldAddress
);
event ExcludeFromFees(address indexed account, bool isExcluded);
event ExcludeMultipleAccountsFromFees(address[] accounts, bool isExcluded);
event SetAutomatedMarketMakerPair(address indexed pair, bool indexed value);
event LiquidityWalletUpdated(
address indexed newLiquidityWallet,
address indexed oldLiquidityWallet
);
event LiquidityFeeChanged(uint256 oldFee, uint256 newFee);
event BurnFeeChanged(uint256 oldFee, uint256 newFee);
event devFeeChanged(uint256 oldFee, uint256 newFee);
event marketingFeeChanged(uint256 oldFee, uint256 newFee);
event SwapAndLiquify(
uint256 tokensSwapped,
uint256 ethReceived,
uint256 tokensIntoLiqudity
);
event SwapAndLiquifyEnabledUpdated(bool enabled);
event SwapETHForTokens(uint256 amountIn, address[] path);
constructor() ERC20("Baby Cramer", "Cwamer") {
uint256 _liquidityFee = 2;
uint256 _burnFees = 0;
uint256 _marketingFees = 0;
uint256 _devFees = 2;
usdcManager = new USDCManager();
liquidityFee = _liquidityFee;
burnFees = _burnFees;
marketingFees = _marketingFees;
devFees = _devFees;
totalFees = _liquidityFee + _burnFees + _marketingFees + _devFees;
liquidityWallet = owner();
IUniswapV2Router02 _uniswapV2Router = IUniswapV2Router02(
0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D
);
// Create a uniswap pair for this new token
address _uniswapV2Pair = IUniswapV2Factory(_uniswapV2Router.factory())
.createPair(address(this), USDC);
uniswapV2Router = _uniswapV2Router;
uniswapV2Pair = _uniswapV2Pair;
_setAutomatedMarketMakerPair(_uniswapV2Pair, true);
_setAutomatedMarketMakerPair(address(this), true);
excludeFromMaxTransaction(address(_uniswapV2Router), true);
excludeFromMaxTransaction(address(uniswapV2Pair), true);
excludeFromMaxTransaction(owner(), true);
excludeFromMaxTransaction(address(this), true);
excludeFromMaxTransaction(address(0xdead), true);
// exclude from paying fees or having max transaction amount
excludeFromFees(liquidityWallet, true);
excludeFromFees(address(this), true);
_isExcludedFromFees[owner()] = true;
maxWallet = (100000000 * (10**18) * 1) / 100; // 1% Max wallet
maxTransactionAmount = (100000000 * (10**18) * 1) / 100; // 1% maxTransactionAmountTxn
// enable owner and fixed-sale wallet to send tokens before presales are over
/*
_mint is an internal function in ERC20.sol that is only called here,
and CANNOT be called ever again
*/
_mint(owner(), 100000000 * (10**18));
}
receive() external payable {}
function updateUniswapV2Router(address newAddress) public onlyOwner {
address _uniswapV2Router = address(uniswapV2Router);
require(newAddress != _uniswapV2Router);
emit UpdateUniswapV2Router(newAddress, _uniswapV2Router);
uniswapV2Router = IUniswapV2Router02(newAddress);
}
function changeLiquidityFee(uint256 _liquidityFee) public onlyOwner {
require(_liquidityFee <= 10, "Must keep fees at 10% or less");
emit LiquidityFeeChanged(liquidityFee, _liquidityFee);
liquidityFee = _liquidityFee;
totalFees = _liquidityFee + burnFees + marketingFees + devFees;
}
function changeBurnFee(uint256 _burnFee) public onlyOwner {
require(_burnFee <= 10, "Must keep fees at 10% or less");
emit BurnFeeChanged(burnFees, _burnFee);
burnFees = _burnFee;
totalFees = liquidityFee + _burnFee + marketingFees + devFees;
}
function changeDevFees(uint256 _devFees) public onlyOwner {
require(_devFees <= 10, "Must keep fees at 10% or less");
emit devFeeChanged(devFees, _devFees);
devFees = _devFees;
totalFees = liquidityFee + burnFees + marketingFees + _devFees;
}
function changeMarketingFees(uint256 _marketingFees) public onlyOwner {
require(_marketingFees <= 10, "Must keep fees at 10% or less");
emit marketingFeeChanged(marketingFees, _marketingFees);
marketingFees = _marketingFees;
totalFees = liquidityFee + burnFees + _marketingFees + devFees;
}
function excludeFromFees(address account, bool excluded) public onlyOwner {
require(_isExcludedFromFees[account] != excluded);
_isExcludedFromFees[account] = excluded;
emit ExcludeFromFees(account, excluded);
}
function excludeMultipleAccountsFromFees(
address[] calldata accounts,
bool excluded
) public onlyOwner {
for (uint256 i = 0; i < accounts.length; i++) {
_isExcludedFromFees[accounts[i]] = excluded;
}
emit ExcludeMultipleAccountsFromFees(accounts, excluded);
}
function setAutomatedMarketMakerPair(address pair, bool value)
public
onlyOwner
{
require(pair != uniswapV2Pair);
_setAutomatedMarketMakerPair(pair, value);
}
function _setAutomatedMarketMakerPair(address pair, bool value) private {
require(automatedMarketMakerPairs[pair] != value);
automatedMarketMakerPairs[pair] = value;
emit SetAutomatedMarketMakerPair(pair, value);
}
function updateLiquidityWallet(address newLiquidityWallet)
public
onlyOwner
{
require(newLiquidityWallet != liquidityWallet);
excludeFromFees(newLiquidityWallet, true);
emit LiquidityWalletUpdated(newLiquidityWallet, liquidityWallet);
liquidityWallet = newLiquidityWallet;
}
function isExcludedFromFees(address account) public view returns (bool) {
return _isExcludedFromFees[account];
}
function removeLimits() external onlyOwner returns (bool) {
limitsInEffect = false;
transferDelayEnabled = false;
return true;
}
function excludeFromMaxTransaction(address updAds, bool isEx)
public
onlyOwner
{
_isExcludedMaxTransactionAmount[updAds] = isEx;
}
function _transfer(
address from,
address to,
uint256 amount
) internal override {
require(from != address(0));
require(to != address(0));
if (amount == 0) {
super._transfer(from, to, 0);
return;
}
if (limitsInEffect) {
if (
from != owner() &&
to != owner() &&
to != address(0) &&
to != address(0xdead) &&
!swapping
) {
//when buy
if (
automatedMarketMakerPairs[from] &&
!_isExcludedMaxTransactionAmount[to]
) {
require(
amount + balanceOf(to) <= maxWallet,
"Unable to exceed Max Wallet"
);
}
//when sell
else if (
automatedMarketMakerPairs[to] &&
!_isExcludedMaxTransactionAmount[from]
) {
require(
amount <= maxTransactionAmount,
"Sell transfer amount exceeds the maxTransactionAmount."
);
} else if (!_isExcludedMaxTransactionAmount[to]) {
require(
amount + balanceOf(to) <= maxWallet,
"Unable to exceed Max Wallet"
);
}
}
}
if (
!swapping &&
automatedMarketMakerPairs[to] && // sells only by detecting transfer to automated market maker pair
from != address(uniswapV2Router) && //router -> pair is removing liquidity which shouldn't have max
!_isExcludedFromFees[to] //no max for those excluded from fees
) {
require(amount <= maxSellTransactionAmount);
}
uint256 contractTokenBalance = balanceOf(address(this));
bool canSwap = contractTokenBalance >= swapTokensAtAmount;
if (
canSwap &&
!swapping &&
!automatedMarketMakerPairs[from] &&
from != liquidityWallet &&
to != liquidityWallet
) {
swapping = true;
uint256 swapTokens = contractTokenBalance.mul(liquidityFee).div(
totalFees
);
if(swapTokens>0){
swapAndLiquify(swapTokens);
}
uint256 sellTokens = balanceOf(address(this));
swapAndDistribute(sellTokens);
swapping = false;
}
bool takeFee = !swapping;
// if any account belongs to _isExcludedFromFee account then remove the fee
if (_isExcludedFromFees[from] || _isExcludedFromFees[to]) {
takeFee = false;
}
if (takeFee) {
uint256 fees = amount.mul(totalFees).div(100);
amount = amount.sub(fees);
super._transfer(from, address(this), fees);
}
super._transfer(from, to, amount);
}
function swapUSDCForTokens(uint256 amount) public {
// generate the uniswap pair path of token -> weth
address[] memory path = new address[](2);
path[0] = USDC;
path[1] = address(this);
IERC20 USDCcontract = IERC20(USDC);
USDCcontract.approve(address(uniswapV2Router), amount);
// make the swap
uniswapV2Router.swapExactTokensForTokensSupportingFeeOnTransferTokens(
amount,
0, // accept any amount of Tokens
path,
deadAddress, // Burn address
block.timestamp.add(300)
);
emit SwapETHForTokens(amount, path);
}
function swapAndLiquify(uint256 tokens) private {
// split the contract balance into halves
uint256 half = tokens.div(2);
uint256 otherHalf = tokens.sub(half);
IERC20 USDCcontract = IERC20(USDC);
// capture the contract's current ETH balance.
// this is so that we can capture exactly the amount of ETH that the
// swap creates, and not make the liquidity event include any ETH that
// has been manually sent to the contract
uint256 initialBalance = USDCcontract.balanceOf(address(this));
// swap tokens for ETH
swapTokensForUSDC(half); // <- this breaks the ETH -> HATE swap when swap+liquify is triggered
usdcManager.transferUSDC(address(this));
// how much ETH did we just swap into?
uint256 newBalance = USDCcontract.balanceOf(address(this)).sub(
initialBalance
);
// add liquidity to uniswap
addLiquidity(otherHalf, newBalance);
emit SwapAndLiquify(half, newBalance, otherHalf);
}
function swapTokensForUSDC(uint256 tokenAmount) private {
// generate the uniswap pair path of token -> weth
address[] memory path = new address[](2);
path[0] = address(this);
path[1] = USDC;
_approve(address(this), address(uniswapV2Router), tokenAmount * 10);
// make the swap
uniswapV2Router.swapExactTokensForTokens(
tokenAmount,
0, // accept any amount of ETH
path,
address(usdcManager),
block.timestamp.add(3000)
);
}
function addLiquidity(uint256 tokenAmount, uint256 usdcAmount) private {
// approve token transfer to cover all possible scenarios
IERC20 USDCcontract = IERC20(USDC);
USDCcontract.approve(address(uniswapV2Router), usdcAmount);
_approve(address(this), address(uniswapV2Router), tokenAmount);
// add the liquidity
uniswapV2Router.addLiquidity(
address(this),
USDC,
tokenAmount,
usdcAmount,
0, // slippage is unavoidable
0, // slippage is unavoidable
liquidityWallet,
block.timestamp.add(300)
);
}
event FundsDistributed(uint256 dev, uint256 marketing, uint256 burn);
function swapAndDistribute(uint256 tokens) private {
swapTokensForUSDC(tokens);
usdcManager.transferUSDC(address(this));
IERC20 USDCcontract = IERC20(USDC);
address _thisContract = address(this);
uint256 _balance = USDCcontract.balanceOf(_thisContract);
uint256 burn = (_balance).mul(burnFees).div(
totalFees.sub(liquidityFee)
);
uint256 dev = (_balance).mul(devFees).div(totalFees.sub(liquidityFee));
uint256 marketing = (_balance).sub(burn).sub(dev);
if(marketing>0){
USDCcontract.transfer(marketingWallet, marketing);
}
if(dev>0){
USDCcontract.transfer(devWallet, dev);
}
if(burn>0){
swapUSDCForTokens(burn);
}
emit FundsDistributed(dev, marketing, burn);
}
function setSwapAndLiquifyEnabled(bool _enabled) public onlyOwner {
swapAndLiquifyEnabled = _enabled;
emit SwapAndLiquifyEnabledUpdated(_enabled);
}
}