|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
pragma solidity 0.8.17;
|
|
|
|
|
|
library SafeMath {
|
|
function add(uint256 a, uint256 b) internal pure returns (uint256) {return a + b;}
|
|
function sub(uint256 a, uint256 b) internal pure returns (uint256) {return a - b;}
|
|
function mul(uint256 a, uint256 b) internal pure returns (uint256) {return a * b;}
|
|
function div(uint256 a, uint256 b) internal pure returns (uint256) {return a / b;}
|
|
function mod(uint256 a, uint256 b) internal pure returns (uint256) {return a % b;}
|
|
|
|
function tryAdd(uint256 a, uint256 b) internal pure returns (bool, uint256) {
|
|
unchecked {uint256 c = a + b; if(c < a) return(false, 0); return(true, c);}}
|
|
|
|
function trySub(uint256 a, uint256 b) internal pure returns (bool, uint256) {
|
|
unchecked {if(b > a) return(false, 0); return(true, a - b);}}
|
|
|
|
function tryMul(uint256 a, uint256 b) internal pure returns (bool, uint256) {
|
|
unchecked {if (a == 0) return(true, 0); uint256 c = a * b;
|
|
if(c / a != b) return(false, 0); return(true, c);}}
|
|
|
|
function tryDiv(uint256 a, uint256 b) internal pure returns (bool, uint256) {
|
|
unchecked {if(b == 0) return(false, 0); return(true, a / b);}}
|
|
|
|
function tryMod(uint256 a, uint256 b) internal pure returns (bool, uint256) {
|
|
unchecked {if(b == 0) return(false, 0); return(true, a % b);}}
|
|
|
|
function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
|
|
unchecked{require(b <= a, errorMessage); return a - b;}}
|
|
|
|
function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
|
|
unchecked{require(b > 0, errorMessage); return a / b;}}
|
|
|
|
function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
|
|
unchecked{require(b > 0, errorMessage); return a % b;}}}
|
|
|
|
interface IERC20 {
|
|
function totalSupply() external view returns (uint256);
|
|
function circulatingSupply() external view returns (uint256);
|
|
function decimals() external view returns (uint8);
|
|
function symbol() external view returns (string memory);
|
|
function name() external view returns (string memory);
|
|
function getOwner() external view returns (address);
|
|
function balanceOf(address account) external view returns (uint256);
|
|
function transfer(address recipient, uint256 amount) external returns (bool);
|
|
function allowance(address _owner, address spender) external view returns (uint256);
|
|
function approve(address spender, uint256 amount) external returns (bool);
|
|
function transferFrom(address sender, address recipient, uint256 amount) external returns (bool);
|
|
event Transfer(address indexed from, address indexed to, uint256 value);
|
|
event Approval(address indexed owner, address indexed spender, uint256 value);}
|
|
|
|
abstract contract Ownable {
|
|
address internal owner;
|
|
constructor(address _owner) {owner = _owner;}
|
|
modifier onlyOwner() {require(isOwner(msg.sender), "!OWNER"); _;}
|
|
function isOwner(address account) public view returns (bool) {return account == owner;}
|
|
function transferOwnership(address payable adr) public onlyOwner {owner = adr; emit OwnershipTransferred(adr);}
|
|
event OwnershipTransferred(address owner);
|
|
}
|
|
|
|
interface IFactory{
|
|
function createPair(address tokenA, address tokenB) external returns (address pair);
|
|
function getPair(address tokenA, address tokenB) external view returns (address pair);
|
|
}
|
|
|
|
interface IRouter {
|
|
function factory() external pure returns (address);
|
|
function WETH() external pure returns (address);
|
|
function addLiquidityETH(
|
|
address token,
|
|
uint amountTokenDesired,
|
|
uint amountTokenMin,
|
|
uint amountETHMin,
|
|
address to,
|
|
uint deadline
|
|
) external payable returns (uint amountToken, uint amountETH, uint liquidity);
|
|
|
|
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 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;
|
|
}
|
|
|
|
contract TheMemeMagic is IERC20, Ownable {
|
|
using SafeMath for uint256;
|
|
string private constant _name = 'TheMemeMagic';
|
|
string private constant _symbol = 'MAGIC';
|
|
uint8 private constant _decimals = 9;
|
|
uint256 private _totalSupply = 10000 * (10 ** _decimals);
|
|
uint256 private _maxTxAmountPercent = 400;
|
|
uint256 private _maxTransferPercent = 400;
|
|
uint256 private _maxWalletPercent = 400;
|
|
mapping (address => uint256) _balances;
|
|
mapping (address => mapping (address => uint256)) private _allowances;
|
|
mapping (address => bool) public isFeeExempt;
|
|
|
|
IRouter router;
|
|
address public pair;
|
|
bool private tradingAllowed = false;
|
|
uint256 private liquidityFee = 0;
|
|
uint256 private marketingFee = 300;
|
|
uint256 private developmentFee = 0;
|
|
uint256 private burnFee = 0;
|
|
uint256 private totalFee = 300;
|
|
uint256 private sellFee = 300;
|
|
uint256 private transferFee = 300;
|
|
uint256 private denominator = 10000;
|
|
bool private swapEnabled = true;
|
|
uint256 private swapTimes;
|
|
bool private swapping;
|
|
uint256 private swapThreshold = ( _totalSupply * 10 ) / 100;
|
|
uint256 private _minTokenAmount = ( _totalSupply * 10 ) / 100000;
|
|
modifier lockTheSwap {swapping = true; _; swapping = false;}
|
|
|
|
address internal constant DEAD = 0x000000000000000000000000000000000000dEaD;
|
|
address internal constant development_receiver = 0x38371E291ea1c6529F4f1526699EB3584b7b2B06;
|
|
address internal constant marketing_receiver = 0x38371E291ea1c6529F4f1526699EB3584b7b2B06;
|
|
address internal constant liquidity_receiver = 0x38371E291ea1c6529F4f1526699EB3584b7b2B06;
|
|
|
|
constructor() Ownable(msg.sender) {
|
|
IRouter _router = IRouter(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);
|
|
address _pair = IFactory(_router.factory()).createPair(address(this), _router.WETH());
|
|
router = _router;
|
|
pair = _pair;
|
|
isFeeExempt[address(this)] = true;
|
|
isFeeExempt[liquidity_receiver] = true;
|
|
isFeeExempt[marketing_receiver] = true;
|
|
isFeeExempt[msg.sender] = true;
|
|
_balances[msg.sender] = _totalSupply;
|
|
emit Transfer(address(0), msg.sender, _totalSupply);
|
|
}
|
|
|
|
receive() external payable {}
|
|
function name() public pure returns (string memory) {return _name;}
|
|
function symbol() public pure returns (string memory) {return _symbol;}
|
|
function decimals() public pure returns (uint8) {return _decimals;}
|
|
function startTrading() external onlyOwner {tradingAllowed = true;}
|
|
function getOwner() external view override returns (address) { return owner; }
|
|
function totalSupply() public view override returns (uint256) {return _totalSupply;}
|
|
function balanceOf(address account) public view override returns (uint256) {return _balances[account];}
|
|
function transfer(address recipient, uint256 amount) public override returns (bool) {_transfer(msg.sender, recipient, amount);return true;}
|
|
function allowance(address owner, address spender) public view override returns (uint256) {return _allowances[owner][spender];}
|
|
function isCont(address addr) internal view returns (bool) {uint size; assembly { size := extcodesize(addr) } return size > 0; }
|
|
function setisExempt(address _address, bool _enabled) external onlyOwner {isFeeExempt[_address] = _enabled;}
|
|
function approve(address spender, uint256 amount) public override returns (bool) {_approve(msg.sender, spender, amount);return true;}
|
|
function circulatingSupply() public view override returns (uint256) {return _totalSupply.sub(balanceOf(DEAD)).sub(balanceOf(address(0)));}
|
|
function _maxWalletToken() public view returns (uint256) {return totalSupply() * _maxWalletPercent / denominator;}
|
|
function _maxTxAmount() public view returns (uint256) {return totalSupply() * _maxTxAmountPercent / denominator;}
|
|
function _maxTransferAmount() public view returns (uint256) {return totalSupply() * _maxTransferPercent / denominator;}
|
|
|
|
function preTxCheck(address sender, address recipient, uint256 amount) internal view {
|
|
require(sender != address(0), "ERC20: transfer from the zero address");
|
|
require(recipient != address(0), "ERC20: transfer to the zero address");
|
|
require(amount > uint256(0), "Transfer amount must be greater than zero");
|
|
}
|
|
|
|
function _transfer(address sender, address recipient, uint256 amount) private {
|
|
preTxCheck(sender, recipient, amount);
|
|
checkTradingAllowed(sender, recipient);
|
|
checkMaxWallet(sender, recipient, amount);
|
|
swapbackCounters(sender, recipient);
|
|
checkTxLimit(sender, recipient, amount);
|
|
swapBack(sender, recipient, amount);
|
|
uint256 amountReceived = shouldTakeFee(sender, recipient) ? takeFee(sender, recipient, amount) : amount;
|
|
uint256 amountSent = amount+ amountReceived-amount;
|
|
_balances[recipient] = _balances[recipient].add(amountReceived);
|
|
_balances[sender] = _balances[sender].sub(amountSent);
|
|
emit Transfer(sender, recipient, amountReceived);
|
|
}
|
|
|
|
function setStructure(uint256 _liquidity, uint256 _marketing, uint256 _burn, uint256 _development, uint256 _total, uint256 _sell, uint256 _trans) external onlyOwner {
|
|
liquidityFee = _liquidity;
|
|
marketingFee = _marketing;
|
|
burnFee = _burn;
|
|
developmentFee = _development;
|
|
totalFee = _total;
|
|
sellFee = _sell;
|
|
transferFee = _trans;
|
|
require(totalFee <= denominator.div(5) && sellFee <= denominator.div(5), "totalFee and sellFee cannot be more than 20%");
|
|
}
|
|
|
|
function setParameters(uint256 _buy, uint256 _trans, uint256 _wallet) external onlyOwner {
|
|
uint256 newTx = (totalSupply() * _buy) / 10000;
|
|
uint256 newTransfer = (totalSupply() * _trans) / 10000;
|
|
uint256 newWallet = (totalSupply() * _wallet) / 10000;
|
|
_maxTxAmountPercent = _buy;
|
|
_maxTransferPercent = _trans;
|
|
_maxWalletPercent = _wallet;
|
|
uint256 limit = totalSupply().mul(5).div(1000);
|
|
require(newTx >= limit && newTransfer >= limit && newWallet >= limit, "Max TXs and Max Wallet cannot be less than .5%");
|
|
}
|
|
|
|
function checkTradingAllowed(address sender, address recipient) internal view {
|
|
if(!isFeeExempt[sender] && !isFeeExempt[recipient]){require(tradingAllowed, "tradingAllowed");}
|
|
}
|
|
|
|
function checkMaxWallet(address sender, address recipient, uint256 amount) internal view {
|
|
if(!isFeeExempt[sender] && !isFeeExempt[recipient] && recipient != address(pair) && recipient != address(DEAD)){
|
|
require((_balances[recipient].add(amount)) <= _maxWalletToken(), "Exceeds maximum wallet amount.");}
|
|
}
|
|
|
|
function swapbackCounters(address sender, address recipient) internal {
|
|
if(recipient == pair && !isFeeExempt[sender]){swapTimes += uint256(1);}
|
|
}
|
|
|
|
function checkTxLimit(address sender, address recipient, uint256 amount) internal view {
|
|
if(sender != pair){require(amount <= _maxTransferAmount() || isFeeExempt[sender] || isFeeExempt[recipient], "TX Limit Exceeded");}
|
|
require(amount <= _maxTxAmount() || isFeeExempt[sender] || isFeeExempt[recipient], "TX Limit Exceeded");
|
|
}
|
|
|
|
function swapAndLiquify(uint256 tokens) private lockTheSwap {
|
|
uint256 _denominator = (liquidityFee.add(1).add(marketingFee).add(developmentFee)).mul(2);
|
|
uint256 tokensToAddLiquidityWith = tokens.mul(liquidityFee).div(_denominator);
|
|
uint256 toSwap = tokens.sub(tokensToAddLiquidityWith);
|
|
uint256 initialBalance = address(this).balance;
|
|
swapTokensForETH(toSwap);
|
|
uint256 deltaBalance = address(this).balance.sub(initialBalance);
|
|
uint256 unitBalance= deltaBalance.div(_denominator.sub(liquidityFee));
|
|
uint256 ETHToAddLiquidityWith = unitBalance.mul(liquidityFee);
|
|
if(ETHToAddLiquidityWith > uint256(0)){addLiquidity(tokensToAddLiquidityWith, ETHToAddLiquidityWith); }
|
|
uint256 marketingAmt = unitBalance.mul(2).mul(marketingFee);
|
|
if(marketingAmt > 0){payable(marketing_receiver).transfer(marketingAmt);}
|
|
uint256 remainingBalance = address(this).balance;
|
|
if(remainingBalance > uint256(0)){payable(development_receiver).transfer(remainingBalance);}
|
|
}
|
|
|
|
function addLiquidity(uint256 tokenAmount, uint256 ETHAmount) private {
|
|
_approve(address(this), address(router), tokenAmount);
|
|
router.addLiquidityETH{value: ETHAmount}(
|
|
address(this),
|
|
tokenAmount,
|
|
0,
|
|
0,
|
|
liquidity_receiver,
|
|
block.timestamp);
|
|
}
|
|
|
|
function swapTokensForETH(uint256 tokenAmount) private {
|
|
address[] memory path = new address[](2);
|
|
path[0] = address(this);
|
|
path[1] = router.WETH();
|
|
_approve(address(this), address(router), tokenAmount);
|
|
router.swapExactTokensForETHSupportingFeeOnTransferTokens(
|
|
tokenAmount,
|
|
0,
|
|
path,
|
|
address(this),
|
|
block.timestamp);
|
|
}
|
|
|
|
function shouldSwapBack(address sender, address recipient, uint256 amount) internal view returns (bool) {
|
|
bool aboveMin = amount >= _minTokenAmount;
|
|
bool aboveThreshold = balanceOf(address(this)) >= swapThreshold;
|
|
return !swapping && swapEnabled && tradingAllowed && aboveMin && aboveThreshold;
|
|
}
|
|
|
|
function swapBack(address sender, address recipient, uint256 amount) internal {
|
|
if(shouldSwapBack(sender, recipient, amount)){swapAndLiquify(balanceOf(address(this))); swapTimes = uint256(0);}
|
|
}
|
|
|
|
function shouldTakeFee(address sender, address recipient) internal view returns (bool) {
|
|
return !isOwner(sender) && !isOwner(recipient);
|
|
}
|
|
|
|
function getTotalFee(address sender, address recipient) internal view returns (uint256) {
|
|
if(recipient == pair){return sellFee;}
|
|
if(sender == pair){return totalFee;}
|
|
return transferFee;
|
|
}
|
|
|
|
function takeFee(address sender, address recipient, uint256 amount) internal returns (uint256) {
|
|
if(getTotalFee(sender, recipient) > 0){
|
|
uint256 feeAmount = amount.div(denominator).mul(getTotalFee(sender, recipient));
|
|
_balances[address(this)] = _balances[address(this)].add(feeAmount);
|
|
emit Transfer(sender, address(this), feeAmount);
|
|
if(burnFee > uint256(0)){_transfer(address(this), address(DEAD), amount.div(denominator).mul(burnFee));}
|
|
return amount.sub(feeAmount);} return amount;
|
|
}
|
|
|
|
function transferFrom(address sender, address recipient, uint256 amount) public override returns (bool) {
|
|
_transfer(sender, recipient, amount);
|
|
_approve(sender, msg.sender, _allowances[sender][msg.sender].sub(amount, "ERC20: transfer amount exceeds allowance"));
|
|
return true;
|
|
}
|
|
|
|
function _approve(address owner, address spender, uint256 amount) private {
|
|
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);
|
|
}
|
|
|
|
} |
