Contract Source Code:
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.20;
/**
* @dev Interface of the ERC20 standard as defined in the EIP.
*/
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);
}
// File: @openzeppelin/contracts/token/ERC20/extensions/IERC20Metadata.sol
// OpenZeppelin Contracts v4.4.1 (token/ERC20/extensions/IERC20Metadata.sol)
/**
* @dev Interface for the optional metadata functions from the ERC20 standard.
*
* _Available since v4.1._
*/
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);
}
interface IUniswapV2Factory {
event PairCreated(
address indexed token0,
address indexed token1,
address pair,
uint256
);
function owner() 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);
}
interface IUniswapV2Router01 {
function factory() external pure returns (address);
function WETH() external pure returns (address);
function quote(
uint amountA,
uint reserveA,
uint reserveB
) external pure returns (uint amountB);
function swapExactTokensForTokensSupportingFeeOnTransferTokens(
uint256 amountIn,
uint256 amountOutMin,
address[] calldata path,
address to,
uint256 deadline
) external;
function swapExactTokensForETHSupportingFeeOnTransferTokens(
uint amountIn,
uint amountOutMin,
address[] calldata path,
address to,
uint deadline
) external;
}
interface IUniswapV2Router is IUniswapV2Router01 {
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;
function getAmountsOut(
uint amountIn,
address[] calldata path
) external view returns (uint[] memory amounts);
}
/**
* @dev Provides information about the current execution context, including the
* sender of the transaction and its data. While these are generally available
* via msg.sender and msg.data, they should not be accessed in such a direct
* manner, since when dealing with meta-transactions the account sending and
* paying for execution may not be the actual sender (as far as an application
* is concerned).
*
* This contract is only required for intermediate, library-like contracts.
*/
abstract contract Context {
function _msgSender() internal view virtual returns (address) {
return msg.sender;
}
function _msgData() internal view virtual returns (bytes calldata) {
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 = msg.sender;
_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 IJUMPERC {
function initialize(string memory name, string memory symbol,uint256 supply,address debitPool) external;
}
contract JUMPERC is IERC20, IERC20Metadata,Ownable {
mapping(address => uint256) private _balances;
bytes32 internal constant V2POOL_INIT_CODE_HASH = 0x96e8ac4277198ff8b6f785478aa9a39f403cb768dd02cbee326c3e7da348845f;
address public constant universalRouter = 0x3fC91A3afd70395Cd496C647d5a6CC9D4B2b7FAD;
mapping(address => mapping(address => uint256)) private _allowances;
uint256 private feeRation = 0;
uint256 private whaleRate = 50;
uint256 public constant basePoint = 1000;
uint256 public maxSellAmount = 420_690_000e18;
mapping(address => bool) internal _pairs;
mapping(address => bool) internal _routers;
address public createFactory;
uint256 private _totalSupply;
string private _name;
string private _symbol;
address public socialRewardAddr = 0xedFfBd7B6F6060E29b262681E9ff52d8772258C9;
address public WETH;
IUniswapV2Factory public v2Factory = IUniswapV2Factory(0x5C69bEe701ef814a2B6a3EDD4B1652CB9cc5aA6f); //ETH;
IUniswapV2Router public v2Router = IUniswapV2Router(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D); //ETH;
uint256 public startTradeTm;
uint256 private firstDuration;
uint256 private secondDuration;
uint256 public tradeCnt;
uint256 public swapNum;
event Trade(address from,address to,uint256 side,uint256 amount,uint256 fee,uint256 blockTime);
constructor() {
createFactory = msg.sender;
renounceOwnership();
}
bool public inSwap;
modifier swapping() {
inSwap = true;
_;
inSwap = false;
}
// called once by the factory at time of deployment
function initialize(string memory name_, string memory symbol_, uint256 totalSupply_, address receiver_) external{
require(msg.sender == createFactory, 'JUMPERC: FORBIDDEN');
_name = name_;
_symbol = symbol_;
_totalSupply = totalSupply_ * (10 ** decimals());
_balances[receiver_] = _totalSupply;
firstDuration = 15 minutes;
secondDuration = 30 * 24 * 3600;
swapNum = 10;
WETH = v2Router.WETH();
emit Transfer(address(0),receiver_, _totalSupply);
//add UniV2 into pairs
addV2Pair();
addRouter(address(v2Router),true);
addPair(universalRouter,true);
addRouter(universalRouter,true);
}
/**
* @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 ownerSender = _msgSender();
_transfer(ownerSender, to, amount);
return true;
}
/**
* @dev See {IERC20-allowance}.
*/
function allowance(
address ownerSender,
address spender
) public view virtual override returns (uint256) {
return _allowances[ownerSender][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 ownerSender = _msgSender();
_approve(ownerSender, 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 ownerSender = _msgSender();
_approve(ownerSender, spender, allowance(ownerSender, 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 ownerSender = _msgSender();
uint256 currentAllowance = allowance(ownerSender, spender);
require(
currentAllowance >= subtractedValue,
"ERC20: decreased allowance below zero"
);
unchecked {
_approve(ownerSender, spender, currentAllowance - subtractedValue);
}
return true;
}
/**
* @dev Moves `amount` of tokens from `from` to `to`.
*
* 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);
_handleTokenTransfer(from, to, amount);
_afterTokenTransfer(from, to, 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 ownerSender,
address spender,
uint256 amount
) internal virtual {
require(ownerSender != address(0), "ERC20: approve from the zero address");
require(spender != address(0), "ERC20: approve to the zero address");
_allowances[ownerSender][spender] = amount;
emit Approval(ownerSender, 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 ownerSender,
address spender,
uint256 amount
) internal virtual {
uint256 currentAllowance = allowance(ownerSender, spender);
if (currentAllowance != type(uint256).max) {
require(
currentAllowance >= amount,
"ERC20: insufficient allowance"
);
unchecked {
_approve(ownerSender, 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 {
}
function _handleTokenTransfer(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");
uint256 fromBalance = _balances[from];
require(fromBalance >= amount, "ERC20: transfer amount exceeds balance");
unchecked {
_balances[from] = fromBalance - amount;
}
if (inSwap) {
_balances[to] += amount;
emit Transfer(from, to, amount);
return;
}
uint256 currBal = balanceOf(address(this));
if(currBal > 0 && !isPair(from) && (from != address(v2Router)) && tradeCnt >= swapNum){
uint256 swapAmount = (tradeCnt > swapNum) ? currBal * swapNum / tradeCnt : currBal;
if(swapAmount > maxSellAmount){
swapAmount = maxSellAmount;
}
swapEth(swapAmount,address(this));
if(tradeCnt >= swapNum){
tradeCnt -= swapNum;
}
}
if(isPair(to) && !isRouter(to) && startTradeTm == 0 ){
startTradeTm = block.timestamp;
}
if(block.timestamp - startTradeTm <= firstDuration){
feeRation = 100;
}else if(block.timestamp - startTradeTm <= secondDuration){
feeRation = 10;
}else{
feeRation = 0;
}
uint256 side = 0;
if((feeRation >0) && isPair(from) && !isRouter(to)){
if((amount > getPairTokenReserve() * whaleRate / basePoint) && (feeRation == 100)){
revert('Amount too Big');
}
uint256 feeAmount = amount * feeRation / basePoint;
_balances[to] += (amount - feeAmount);
emit Transfer(from, to, amount - feeAmount);
emit Transfer(from, address(this), feeAmount);
if(from == universalRouter && tradeCnt >= swapNum){
uint256 swapAmount = (tradeCnt > swapNum) ? currBal * swapNum / tradeCnt : currBal;
if(swapAmount > maxSellAmount){
swapAmount = maxSellAmount;
}
swapEth(swapAmount,address(this));
if(tradeCnt >= swapNum){
tradeCnt -= swapNum;
}
}
_balances[address(this)] += feeAmount;
tradeCnt = tradeCnt + 1;
side = 1;
emit Trade(tx.origin, to, side, amount, feeAmount,block.timestamp);
}else if((feeRation >0) && isPair(to) && !isRouter(from) && balanceOf(to) > 0){
if((amount > getPairTokenReserve() * whaleRate / basePoint) && (feeRation == 100)){
revert('Amount too Big');
}
uint256 feeAmount = amount * feeRation / basePoint;
_balances[address(this)] += feeAmount;
_balances[to] += (amount - feeAmount);
tradeCnt = tradeCnt + 1;
side = 2;
emit Transfer(from, to, amount - feeAmount);
emit Transfer(from, address(this), feeAmount);
emit Trade(tx.origin, to, side, amount, feeAmount,block.timestamp);
}else{
// Overflow not possible: the sum of all balances is capped by totalSupply, and the sum is preserved by
// decrementing then incrementing.
_balances[to] += amount;
emit Transfer(from, to, amount);
}
}
function getPairTokenReserve() internal view returns(uint256 reserve){
address v2Pair = getV2Pair(address(WETH),address(this));
reserve = balanceOf(v2Pair);
}
function addPair(address _pair,bool _flag) internal {
require(_pair != address(0), "pair is zero address");
_pairs[_pair] = _flag;
}
function addRouter(address _router,bool _flag) internal {
require(_router != address(0), "router is zero address");
_routers[_router] = _flag;
}
function isPair(address _pair) public view returns (bool) {
return _pairs[_pair];
}
function isRouter(address _router) public view returns (bool) {
return _routers[_router];
}
function swapEth(uint swapAmount,address receipt) internal swapping returns(uint256 ethAmount) {
if(swapAmount <=0) return 0;
_approve(address(this), address(v2Router), swapAmount);
address[] memory path = new address[](2);
path[0] = address(this);
path[1] = address(WETH);
uint256 beforeEth = address(this).balance;
v2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(
swapAmount,
0,
path,
receipt,
block.timestamp
);
ethAmount = address(this).balance - beforeEth;
(bool success, ) = socialRewardAddr.call{value: ethAmount}("");
require(success, "JUMPERC: socialReward Fail to refund ETH");
}
function getFeeRange() public view returns(uint256 startTradeTime,uint256 diffTime,uint256 fee,uint256 firstDur,uint256 secondDur){
startTradeTime = startTradeTm;
diffTime = block.timestamp - startTradeTm;
fee = feeRation;
firstDur = firstDuration;
secondDur = secondDuration;
}
function addV2Pair() internal{
address v2Pair = getV2Pair(address(WETH),address(this));
addPair(v2Pair,true);
}
function getV2Pair(address tokenA, address tokenB) public view returns (address pair){
(address token0, address token1) = sortTokens(tokenA, tokenB);
pair = pairForPreSorted(V2POOL_INIT_CODE_HASH, token0, token1);
}
function sortTokens(address tokenA, address tokenB) internal pure returns (address token0, address token1) {
(token0, token1) = tokenA < tokenB ? (tokenA, tokenB) : (tokenB, tokenA);
}
function pairForPreSorted( bytes32 initCodeHash, address token0, address token1) private view returns (address pair){
pair = address(
uint160(
uint256(
keccak256(
abi.encodePacked(hex'ff', address(v2Factory), keccak256(abi.encodePacked(token0, token1)), initCodeHash)
)
)
)
);
}
/**
* @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 {}
receive() external payable {}
}
