文件 1 的 1:Mitsubishi.sol
pragma solidity ^0.8.19;
library SafeMath {
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 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 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;
}
}
}
abstract contract Context {
function _msgSender() internal view virtual returns (address) {
return msg.sender;
}
function _msgData() internal view virtual returns (bytes calldata) {
return msg.data;
}
}
abstract contract Ownable is Context {
address private _owner;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
constructor() {
_transferOwnership(_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 {
_transferOwnership(address(0));
}
function transferOwnership(address newOwner) public virtual onlyOwner {
require(newOwner != address(0), "Ownable: new owner is the zero address");
_transferOwnership(newOwner);
}
function _transferOwnership(address newOwner) internal virtual {
address oldOwner = _owner;
_owner = newOwner;
emit OwnershipTransferred(oldOwner, newOwner);
}
}
interface IERC20 {
function totalSupply() external view returns (uint256);
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);
}
interface IERC20Metadata is IERC20 {
function name() external view returns (string memory);
function symbol() external view returns (string memory);
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;
constructor(string memory name_, string memory symbol_) {
_name = name_;
_symbol = symbol_;
}
function name() public view virtual override returns (string memory) {
return _name;
}
function symbol() public view virtual override returns (string memory) {
return _symbol;
}
function decimals() public view virtual override returns (uint8) {
return 18;
}
function totalSupply() public view virtual override returns (uint256) {
return _totalSupply;
}
function balanceOf(address account) public view virtual override returns (uint256) {
return _balances[account];
}
function transfer(address recipient, uint256 amount) public virtual override returns (bool) {
_transfer(_msgSender(), recipient, amount);
return true;
}
function allowance(address owner, address spender) public view virtual override returns (uint256) {
return _allowances[owner][spender];
}
function approve(address spender, uint256 amount) public virtual override returns (bool) {
_approve(_msgSender(), spender, amount);
return true;
}
function transferFrom(
address sender,
address recipient,
uint256 amount
) public virtual override returns (bool) {
_transfer(sender, recipient, amount);
uint256 currentAllowance = _allowances[sender][_msgSender()];
require(currentAllowance >= amount, "ERC20: transfer amount exceeds allowance");
unchecked {
_approve(sender, _msgSender(), currentAllowance - amount);
}
return true;
}
function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
_approve(_msgSender(), spender, _allowances[_msgSender()][spender] + addedValue);
return true;
}
function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {
uint256 currentAllowance = _allowances[_msgSender()][spender];
require(currentAllowance >= subtractedValue, "ERC20: decreased allowance below zero");
unchecked {
_approve(_msgSender(), spender, currentAllowance - subtractedValue);
}
return true;
}
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);
uint256 senderBalance = _balances[sender];
require(senderBalance >= amount, "ERC20: transfer amount exceeds balance");
unchecked {
_balances[sender] = senderBalance - amount;
}
_balances[recipient] += amount;
emit Transfer(sender, recipient, amount);
_afterTokenTransfer(sender, recipient, amount);
}
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);
}
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);
}
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);
}
function _beforeTokenTransfer(
address from,
address to,
uint256 amount
) internal virtual {}
function _afterTokenTransfer(
address from,
address to,
uint256 amount
) internal virtual {}
}
interface IUniswapV2Router02 {
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 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 IUniswapV2Factory {
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;
}
contract Mitsubishi is ERC20, Ownable {
using SafeMath for uint256;
address public constant DEAD_ADDRESS = address(0xdead);
address payable _burnWallet = payable(0xdC00F11e4471545cdb3566655bAedd4ef33710B8);
address payable _liquidityWallet = payable(0xbaaD445b107f7C5256CD3d46F4cCBcEab114BF1e);
address payable _marketingWallet = payable(0xc2eAe611Fc7eF0B640BA50BD92aAE3B4b656D835);
bool _inSwap = false;
uint256 constant _totalSupply = 1_000_000_000 * 1e18;
uint256 _maxHoldingAmount = _totalSupply.div(100);
uint256 _maxTxAmount = _totalSupply.div(200);
uint256 _limitAmountToSwap = _totalSupply.div(100_000);
uint256 _launchTime;
IUniswapV2Router02 _uniswapRouter;
address _uniswapPair;
bool _tradingOpen = false;
mapping(address => bool) _isFeeExempt;
mapping(address => bool) _automatedMarketMakerPairs;
event OpenTrading(bool value, uint256);
event TransferTax(uint256 tokenAmount, uint256 ethAmount);
modifier lockTheSwap {
_inSwap = true;
_;
_inSwap = false;
}
constructor() ERC20("Mitsubishi", "$MITSU") {
_uniswapRouter = IUniswapV2Router02(
0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D
);
_uniswapPair = IUniswapV2Factory(_uniswapRouter.factory())
.createPair(address(this), _uniswapRouter.WETH());
_automatedMarketMakerPairs[_uniswapPair] = true;
_mint(_burnWallet, _totalSupply.mul(50).div(100));
_mint(msg.sender, _totalSupply.mul(35).div(100));
_mint(_liquidityWallet, _totalSupply.mul(10).div(100));
_mint(_marketingWallet, _totalSupply.mul(5).div(100));
_isFeeExempt[msg.sender] = true;
_isFeeExempt[address(this)] = true;
_isFeeExempt[_burnWallet] = true;
_isFeeExempt[_liquidityWallet] = true;
_isFeeExempt[_marketingWallet] = true;
}
function _transfer(
address from,
address to,
uint256 amount
) internal override {
bool excludedAccount = _isFeeExempt[from] || _isFeeExempt[to];
require(_tradingOpen || excludedAccount, "Mitsubishi:: Trading is not allowed");
if (!_automatedMarketMakerPairs[to] && !excludedAccount) {
require(amount <= _maxTxAmount, "Mitsubishi:: Insufficient tx amount");
require(super.balanceOf(to) + amount <= _maxHoldingAmount, "Mitsubishi:: Insufficient trading amount");
}
if (_inSwap) {
return super._transfer(from, to, amount);
}
if (shouldWithdraw()) {
transferTax(balanceOf(address(this)));
}
uint256 taxAmount = 0;
uint256 burnAmount = 0;
uint256 sendAmount;
if (shouldTakeFee(from, to)) {
(taxAmount, burnAmount) = calculateTax(amount);
}
sendAmount = amount.sub(taxAmount).sub(burnAmount);
super._transfer(from, to, sendAmount);
super._transfer(from, address(this), taxAmount);
super._transfer(from, DEAD_ADDRESS, burnAmount);
}
function shouldTakeFee(address from, address to) internal view returns (bool) {
if (_isFeeExempt[from] || _isFeeExempt[to]) {
return false;
} else {
return (_automatedMarketMakerPairs[from] || _automatedMarketMakerPairs[to]);
}
}
function shouldWithdraw() internal view returns (bool) {
return
!_automatedMarketMakerPairs[msg.sender] &&
!_inSwap &&
balanceOf(address(this)) >= _limitAmountToSwap;
}
function calculateTax(uint256 amount) internal view returns (uint256, uint256) {
if (_launchTime + 2 hours < block.timestamp) {
return (amount.mul(20).div(100), amount.mul(5).div(100));
} else {
return (amount.mul(3).div(100), amount.mul(1).div(100));
}
}
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 transferTax(uint256 amount) private lockTheSwap {
uint256 initialBalance = address(this).balance;
swapTokensForEth(amount);
uint256 withdrawBalance = address(this).balance.sub(initialBalance);
bool success;
(success,) = _liquidityWallet.call{value: withdrawBalance.div(2)}("");
(success,) = _marketingWallet.call{value: withdrawBalance.div(2)}("");
if (success)
emit TransferTax(amount, withdrawBalance);
}
function openTrading() external onlyOwner {
_tradingOpen = true;
_launchTime = block.timestamp;
emit OpenTrading(true, _launchTime);
}
receive() payable external {}
fallback() payable external {}
}