文件 1 的 1：Juice.sol
pragma solidity = 0.8.19;
abstract contract Context {
constructor() {
}
function _msgSender() internal view returns (address payable) {
return payable(msg.sender);
}
function _msgData() internal view returns (bytes memory) {
this;
return msg.data;
}
}
abstract contract Ownable is Context {
address private _owner;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
constructor() {
_setOwner(_msgSender());
}
function owner() public view virtual returns (address) {
return _owner;
}
modifier onlyOwner() {
require(owner() == _msgSender(), "Ownable: caller is not the owner");
_;
}
function renounceOwnership() public virtual onlyOwner {
_setOwner(address(0));
}
function transferOwnership(address newOwner) public virtual onlyOwner {
require(newOwner != address(0), "Ownable: new owner is the zero address");
_setOwner(newOwner);
}
function _setOwner(address newOwner) private {
address oldOwner = _owner;
_owner = newOwner;
emit OwnershipTransferred(oldOwner, newOwner);
}
}
interface IFactoryV2 {
event PairCreated(address indexed token0, address indexed token1, address lpPair, uint);
function getPair(address tokenA, address tokenB) external view returns (address lpPair);
function createPair(address tokenA, address tokenB) external returns (address lpPair);
}
interface IV2Pair {
function factory() external view returns (address);
function getReserves() external view returns (uint112 reserve0, uint112 reserve1, uint32 blockTimestampLast);
function sync() external;
}
interface IRouter01 {
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 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 swapExactETHForTokens(
uint amountOutMin,
address[] calldata path,
address to, uint deadline
) external payable returns (uint[] memory amounts);
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);
}
interface IRouter02 is IRouter01 {
function swapExactTokensForETHSupportingFeeOnTransferTokens(
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 swapExactTokensForTokensSupportingFeeOnTransferTokens(
uint amountIn,
uint amountOutMin,
address[] calldata path,
address to,
uint deadline
) external;
function swapExactTokensForTokens(
uint amountIn,
uint amountOutMin,
address[] calldata path,
address to,
uint deadline
) external returns (uint[] memory amounts);
}
interface IERC20 {
function totalSupply() 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);
}
contract Juice is Context, Ownable, IERC20 {
function totalSupply() external pure override returns (uint256) { if (_totalSupply == 0) { revert(); } return _totalSupply; }
function decimals() external pure override returns (uint8) { if (_totalSupply == 0) { revert(); } return _decimals; }
function symbol() external pure override returns (string memory) { return _symbol; }
function name() external pure override returns (string memory) { return _name; }
function getOwner() external view override returns (address) { return owner(); }
function allowance(address holder, address spender) external view override returns (uint256) { return _allowances[holder][spender]; }
function balanceOf(address account) public view override returns (uint256) {
return balance[account];
}
mapping (address => mapping (address => uint256)) private _allowances;
mapping (address => bool) private _noFee;
mapping (address => bool) private liquidityAdd;
mapping (address => bool) private isLpPair;
mapping (address => uint256) private balance;
uint256 public maxTransactionAmount = _totalSupply * 1 / 100;
uint256 public maxWallet = _totalSupply* 1 / 100;
uint256 constant public _totalSupply = 50000000 * 10**18;
uint256 constant public swapThreshold = _totalSupply / 5_00;
uint256 public buyfee = 15;
uint256 public sellfee = 15;
uint256 public transferfee = 15;
uint256 constant public fee_denominator = 1_00;
bool private canSwapFees = true;
address payable private marketingAddress = payable(0x6da849A5bE2Ba9EdBF8a530a12EB7Fd3be86be87);
IRouter02 public swapRouter;
string constant private _name = "Juice";
string constant private _symbol = "Juice";
uint8 constant private _decimals = 18;
address public lpPair;
bool public isTradingEnabled = true;
bool private inSwap;
modifier inSwapFlag {
inSwap = true;
_;
inSwap = false;
}
constructor () {
_noFee[msg.sender] = true;
if (block.chainid == 1 || block.chainid == 5) {
swapRouter = IRouter02(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);
}
liquidityAdd[msg.sender] = true;
balance[msg.sender] = _totalSupply;
emit Transfer(address(0), msg.sender, _totalSupply);
lpPair = IFactoryV2(swapRouter.factory()).createPair(swapRouter.WETH(), address(this));
isLpPair[lpPair] = true;
_approve(msg.sender, address(swapRouter), type(uint256).max);
_approve(address(this), address(swapRouter), type(uint256).max);
}
receive() external payable {}
function transfer(address recipient, uint256 amount) public override returns (bool) {
_transfer(msg.sender, recipient, amount);
return true;
}
function approve(address spender, uint256 amount) external override returns (bool) {
_approve(msg.sender, spender, amount);
return true;
}
function _approve(address sender, address spender, uint256 amount) internal {
require(sender != address(0), "ERC20: Zero Address");
require(spender != address(0), "ERC20: Zero Address");
_allowances[sender][spender] = amount;
}
function transferFrom(address sender, address recipient, uint256 amount) external override returns (bool) {
if (_allowances[sender][msg.sender] != type(uint256).max) {
_allowances[sender][msg.sender] -= amount;
}
return _transfer(sender, recipient, amount);
}
function isExemptWallet(address account) external view returns(bool) {
return _noFee[account];
}
function setExemptWallet(address account, bool enabled) public onlyOwner {
_noFee[account] = enabled;
}
function updateMaxTxnAmount(uint256 newNum) external onlyOwner {
maxTransactionAmount = newNum * (10 ** 18);
}
function updateMaxWalletAmount(uint256 newNum) external onlyOwner {
maxWallet = newNum * (10 ** 18);
}
function isLimitedAddress(address ins, address out) internal view returns (bool) {
bool isLimited = ins != owner()
&& out != owner() && msg.sender != owner()
&& !liquidityAdd[ins] && !liquidityAdd[out] && out != address(0) && out != address(this);
return isLimited;
}
function updateFees(
uint256 buyfee_,
uint256 sellfee_,
uint256 transferfee_
) external onlyOwner {
require(buyfee_ <= 15, " fee on buy cannot be more than 15%");
require(sellfee_ <= 15, " fee on sell cannot be more than 15%");
require(transferfee_ <= 15, " fee on transfer cannot be more than 15%");
buyfee = buyfee_;
sellfee = sellfee_;
transferfee = transferfee_;
}
function is_buy(address ins, address out) internal view returns (bool) {
bool _is_buy = !isLpPair[out] && isLpPair[ins];
return _is_buy;
}
function is_sell(address ins, address out) internal view returns (bool) {
bool _is_sell = isLpPair[out] && !isLpPair[ins];
return _is_sell;
}
function _transfer(address from, address to, uint256 amount) internal returns (bool) {
bool takeFee = true;
require(to != address(0), "ERC20: transfer to the zero address");
require(from != address(0), "ERC20: transfer from the zero address");
require(amount > 0, "Transfer amount must be greater than zero");
if (isLimitedAddress(from,to)) {
require(isTradingEnabled,"Trading is not enabled");
}
if (
from != owner() &&
to != owner() &&
to != address(0) &&
to != address(0xdead)
) {
if (
isLpPair[from] &&
!_noFee[to]
) {
require(
amount <= maxTransactionAmount,
"Buy transfer amount exceeds the maxTransactionAmount."
);
require(
amount + balanceOf(to) <= maxWallet,
"Max wallet exceeded"
);
}
else if (
isLpPair[to] &&
!_noFee[from]
) {
require(
amount <= maxTransactionAmount,
"Sell transfer amount exceeds the maxTransactionAmount."
);
} else if (!_noFee[to]) {
require(
amount + balanceOf(to) <= maxWallet,
"Max wallet exceeded"
);
}
}
if(is_sell(from, to) && !inSwap) {
uint256 contractTokenBalance = balanceOf(address(this));
if(contractTokenBalance >= swapThreshold) { internalSwap(contractTokenBalance); }
}
if (_noFee[from] || _noFee[to]){
takeFee = false;
}
balance[from] -= amount; uint256 amountAfterFee = (takeFee) ? takeTaxes(from, is_buy(from, to), is_sell(from, to), amount) : amount;
balance[to] += amountAfterFee; emit Transfer(from, to, amountAfterFee);
return true;
}
function takeTaxes(address from, bool isbuy, bool issell, uint256 amount) internal returns (uint256) {
uint256 fee;
if (isbuy) fee = buyfee; else if (issell) fee = sellfee; else fee = transferfee;
if (fee == 0) return amount;
uint256 feeAmount = amount * fee / fee_denominator;
if (feeAmount > 0) {
balance[address(this)] += feeAmount;
emit Transfer(from, address(this), feeAmount);
}
return amount - feeAmount;
}
function internalSwap(uint256 contractTokenBalance) internal inSwapFlag {
address[] memory path = new address[](2);
path[0] = address(this);
path[1] = swapRouter.WETH();
if (_allowances[address(this)][address(swapRouter)] != type(uint256).max) {
_allowances[address(this)][address(swapRouter)] = type(uint256).max;
}
try swapRouter.swapExactTokensForETHSupportingFeeOnTransferTokens(
contractTokenBalance,
0,
path,
address(this),
block.timestamp
) {} catch {
return;
}
bool success;
if(address(this).balance > 0) {(success,) = marketingAddress.call{value: address(this).balance, gas: 35000}("");}
}
}
