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/** | |
__ _ | |
___ / /___ ____ ___ _________ (_)___ | |
/ _ \/ / __ \/ __ \/ _ \/ ___/ __ \/ / __ \ | |
/ __/ / /_/ / / / / __/ /__/ /_/ / / / / / | |
\___/_/\____/_/ /_/\___/\___/\____/_/_/ /_/ | |
so markup. very contract. moon. | |
10% fee — 5% as locked liquidity forever, 5% automatically distributed. | |
https://elonecoin.org/ | |
*/ | |
pragma solidity ^0.6.12; | |
// SPDX-License-Identifier: Unlicensed | |
interface IERC20 { | |
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); | |
} | |
/** | |
* @dev Wrappers over Solidity's arithmetic operations with added overflow | |
* checks. | |
* | |
* Arithmetic operations in Solidity wrap on overflow. This can easily result | |
* in bugs, because programmers usually assume that an overflow raises an | |
* error, which is the standard behavior in high level programming languages. | |
* `SafeMath` restores this intuition by reverting the transaction when an | |
* operation overflows. | |
* | |
* Using this library instead of the unchecked operations eliminates an entire | |
* class of bugs, so it's recommended to use it always. | |
*/ | |
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 payable) { | |
return msg.sender; | |
} | |
function _msgData() internal view virtual returns (bytes memory) { | |
this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691 | |
return msg.data; | |
} | |
} | |
/** | |
* @dev Collection of functions related to the address type | |
*/ | |
library Address { | |
/** | |
* @dev Returns true if `account` is a contract. | |
* | |
* [IMPORTANT] | |
* ==== | |
* It is unsafe to assume that an address for which this function returns | |
* false is an externally-owned account (EOA) and not a contract. | |
* | |
* Among others, `isContract` will return false for the following | |
* types of addresses: | |
* | |
* - an externally-owned account | |
* - a contract in construction | |
* - an address where a contract will be created | |
* - an address where a contract lived, but was destroyed | |
* ==== | |
*/ | |
function isContract(address account) internal view returns (bool) { | |
// According to EIP-1052, 0x0 is the value returned for not-yet created accounts | |
// and 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470 is returned | |
// for accounts without code, i.e. `keccak256('')` | |
bytes32 codehash; | |
bytes32 accountHash = 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470; | |
// solhint-disable-next-line no-inline-assembly | |
assembly { codehash := extcodehash(account) } | |
return (codehash != accountHash && codehash != 0x0); | |
} | |
/** | |
* @dev Replacement for Solidity's `transfer`: sends `amount` wei to | |
* `recipient`, forwarding all available gas and reverting on errors. | |
* | |
* https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost | |
* of certain opcodes, possibly making contracts go over the 2300 gas limit | |
* imposed by `transfer`, making them unable to receive funds via | |
* `transfer`. {sendValue} removes this limitation. | |
* | |
* https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more]. | |
* | |
* IMPORTANT: because control is transferred to `recipient`, care must be | |
* taken to not create reentrancy vulnerabilities. Consider using | |
* {ReentrancyGuard} or the | |
* https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern]. | |
*/ | |
function sendValue(address payable recipient, uint256 amount) internal { | |
require(address(this).balance >= amount, "Address: insufficient balance"); | |
// solhint-disable-next-line avoid-low-level-calls, avoid-call-value | |
(bool success, ) = recipient.call{ value: amount }(""); | |
require(success, "Address: unable to send value, recipient may have reverted"); | |
} | |
/** | |
* @dev Performs a Solidity function call using a low level `call`. A | |
* plain`call` is an unsafe replacement for a function call: use this | |
* function instead. | |
* | |
* If `target` reverts with a revert reason, it is bubbled up by this | |
* function (like regular Solidity function calls). | |
* | |
* Returns the raw returned data. To convert to the expected return value, | |
* use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`]. | |
* | |
* Requirements: | |
* | |
* - `target` must be a contract. | |
* - calling `target` with `data` must not revert. | |
* | |
* _Available since v3.1._ | |
*/ | |
function functionCall(address target, bytes memory data) internal returns (bytes memory) { | |
return functionCall(target, data, "Address: low-level call failed"); | |
} | |
/** | |
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with | |
* `errorMessage` as a fallback revert reason when `target` reverts. | |
* | |
* _Available since v3.1._ | |
*/ | |
function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) { | |
return _functionCallWithValue(target, data, 0, errorMessage); | |
} | |
/** | |
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], | |
* but also transferring `value` wei to `target`. | |
* | |
* Requirements: | |
* | |
* - the calling contract must have an ETH balance of at least `value`. | |
* - the called Solidity function must be `payable`. | |
* | |
* _Available since v3.1._ | |
*/ | |
function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) { | |
return functionCallWithValue(target, data, value, "Address: low-level call with value failed"); | |
} | |
/** | |
* @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but | |
* with `errorMessage` as a fallback revert reason when `target` reverts. | |
* | |
* _Available since v3.1._ | |
*/ | |
function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) { | |
require(address(this).balance >= value, "Address: insufficient balance for call"); | |
return _functionCallWithValue(target, data, value, errorMessage); | |
} | |
function _functionCallWithValue(address target, bytes memory data, uint256 weiValue, string memory errorMessage) private returns (bytes memory) { | |
require(isContract(target), "Address: call to non-contract"); | |
// solhint-disable-next-line avoid-low-level-calls | |
(bool success, bytes memory returndata) = target.call{ value: weiValue }(data); | |
if (success) { | |
return returndata; | |
} else { | |
// Look for revert reason and bubble it up if present | |
if (returndata.length > 0) { | |
// The easiest way to bubble the revert reason is using memory via assembly | |
// solhint-disable-next-line no-inline-assembly | |
assembly { | |
let returndata_size := mload(returndata) | |
revert(add(32, returndata), returndata_size) | |
} | |
} else { | |
revert(errorMessage); | |
} | |
} | |
} | |
} | |
/** | |
* @dev Contract module which provides a basic access control mechanism, where | |
* there is an account (an owner) that can be granted exclusive access to | |
* specific functions. | |
* | |
* By default, the owner account will be the one that deploys the contract. This | |
* can later be changed with {transferOwnership}. | |
* | |
* This module is used through inheritance. It will make available the modifier | |
* `onlyOwner`, which can be applied to your functions to restrict their use to | |
* the owner. | |
*/ | |
contract Ownable is Context { | |
address private _owner; | |
address private _previousOwner; | |
uint256 private _lockTime; | |
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); | |
/** | |
* @dev Initializes the contract setting the deployer as the initial owner. | |
*/ | |
constructor () internal { | |
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; | |
} | |
function geUnlockTime() public view returns (uint256) { | |
return _lockTime; | |
} | |
//Locks the contract for owner for the amount of time provided | |
function lock(uint256 time) public virtual onlyOwner { | |
_previousOwner = _owner; | |
_owner = address(0); | |
_lockTime = now + time; | |
emit OwnershipTransferred(_owner, address(0)); | |
} | |
//Unlocks the contract for owner when _lockTime is exceeds | |
function unlock() public virtual { | |
require(_previousOwner == msg.sender, "You don't have permission to unlock"); | |
require(now > _lockTime , "Contract is locked until 7 days"); | |
emit OwnershipTransferred(_owner, _previousOwner); | |
_owner = _previousOwner; | |
} | |
} | |
// pragma solidity >=0.5.0; | |
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; | |
} | |
// pragma solidity >=0.5.0; | |
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; | |
} | |
// pragma solidity >=0.6.2; | |
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; | |
} | |
contract EloneCoin is Context, IERC20, Ownable { | |
using SafeMath for uint256; | |
using Address for address; | |
mapping (address => uint256) private _rOwned; | |
mapping (address => uint256) private _tOwned; | |
mapping (address => mapping (address => uint256)) private _allowances; | |
mapping (address => bool) private _isExcludedFromFee; | |
mapping (address => bool) private _isExcluded; | |
address[] private _excluded; | |
uint256 private constant MAX = ~uint256(0); | |
uint256 private _tTotal = 1000000000 * 10**6 * 10**9; | |
uint256 private _rTotal = (MAX - (MAX % _tTotal)); | |
uint256 private _tFeeTotal; | |
string private _name = "EloneCoin"; | |
string private _symbol = "ELONE"; | |
uint8 private _decimals = 9; | |
uint256 public _taxFee = 5; | |
uint256 private _previousTaxFee = _taxFee; | |
uint256 public _liquidityFee = 5; | |
uint256 private _previousLiquidityFee = _liquidityFee; | |
IUniswapV2Router02 public immutable uniswapV2Router; | |
address public immutable uniswapV2Pair; | |
bool inSwapAndLiquify; | |
bool public swapAndLiquifyEnabled = true; | |
uint256 public _maxTxAmount = 5000000 * 10**6 * 10**9; | |
uint256 private numTokensSellToAddToLiquidity = 500000 * 10**6 * 10**9; | |
event MinTokensBeforeSwapUpdated(uint256 minTokensBeforeSwap); | |
event SwapAndLiquifyEnabledUpdated(bool enabled); | |
event SwapAndLiquify( | |
uint256 tokensSwapped, | |
uint256 ethReceived, | |
uint256 tokensIntoLiqudity | |
); | |
modifier lockTheSwap { | |
inSwapAndLiquify = true; | |
_; | |
inSwapAndLiquify = false; | |
} | |
constructor () public { | |
_rOwned[_msgSender()] = _rTotal; | |
IUniswapV2Router02 _uniswapV2Router = IUniswapV2Router02(0xD99D1c33F9fC3444f8101754aBC46c52416550D1); | |
// Create a uniswap pair for this new token | |
uniswapV2Pair = IUniswapV2Factory(_uniswapV2Router.factory()) | |
.createPair(address(this), _uniswapV2Router.WETH()); | |
// set the rest of the contract variables | |
uniswapV2Router = _uniswapV2Router; | |
//exclude owner and this contract from fee | |
_isExcludedFromFee[owner()] = true; | |
_isExcludedFromFee[address(this)] = true; | |
emit Transfer(address(0), _msgSender(), _tTotal); | |
} | |
function name() public view returns (string memory) { | |
return _name; | |
} | |
function symbol() public view returns (string memory) { | |
return _symbol; | |
} | |
function decimals() public view returns (uint8) { | |
return _decimals; | |
} | |
function totalSupply() public view override returns (uint256) { | |
return _tTotal; | |
} | |
function balanceOf(address account) public view override returns (uint256) { | |
if (_isExcluded[account]) return _tOwned[account]; | |
return tokenFromReflection(_rOwned[account]); | |
} | |
function transfer(address recipient, uint256 amount) public override returns (bool) { | |
_transfer(_msgSender(), recipient, amount); | |
return true; | |
} | |
function allowance(address owner, address spender) public view override returns (uint256) { | |
return _allowances[owner][spender]; | |
} | |
function approve(address spender, uint256 amount) public override returns (bool) { | |
_approve(_msgSender(), spender, amount); | |
return true; | |
} | |
function transferFrom(address sender, address recipient, uint256 amount) public override returns (bool) { | |
_transfer(sender, recipient, amount); | |
_approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, "ERC20: transfer amount exceeds allowance")); | |
return true; | |
} | |
function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) { | |
_approve(_msgSender(), spender, _allowances[_msgSender()][spender].add(addedValue)); | |
return true; | |
} | |
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; | |
} | |
function isExcludedFromReward(address account) public view returns (bool) { | |
return _isExcluded[account]; | |
} | |
function totalFees() public view returns (uint256) { | |
return _tFeeTotal; | |
} | |
function deliver(uint256 tAmount) public { | |
address sender = _msgSender(); | |
require(!_isExcluded[sender], "Excluded addresses cannot call this function"); | |
(uint256 rAmount,,,,,) = _getValues(tAmount); | |
_rOwned[sender] = _rOwned[sender].sub(rAmount); | |
_rTotal = _rTotal.sub(rAmount); | |
_tFeeTotal = _tFeeTotal.add(tAmount); | |
} | |
function reflectionFromToken(uint256 tAmount, bool deductTransferFee) public view returns(uint256) { | |
require(tAmount <= _tTotal, "Amount must be less than supply"); | |
if (!deductTransferFee) { | |
(uint256 rAmount,,,,,) = _getValues(tAmount); | |
return rAmount; | |
} else { | |
(,uint256 rTransferAmount,,,,) = _getValues(tAmount); | |
return rTransferAmount; | |
} | |
} | |
function tokenFromReflection(uint256 rAmount) public view returns(uint256) { | |
require(rAmount <= _rTotal, "Amount must be less than total reflections"); | |
uint256 currentRate = _getRate(); | |
return rAmount.div(currentRate); | |
} | |
function excludeFromReward(address account) public onlyOwner() { | |
// require(account != 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D, 'We can not exclude Uniswap router.'); | |
require(!_isExcluded[account], "Account is already excluded"); | |
if(_rOwned[account] > 0) { | |
_tOwned[account] = tokenFromReflection(_rOwned[account]); | |
} | |
_isExcluded[account] = true; | |
_excluded.push(account); | |
} | |
function includeInReward(address account) external onlyOwner() { | |
require(_isExcluded[account], "Account is already excluded"); | |
for (uint256 i = 0; i < _excluded.length; i++) { | |
if (_excluded[i] == account) { | |
_excluded[i] = _excluded[_excluded.length - 1]; | |
_tOwned[account] = 0; | |
_isExcluded[account] = false; | |
_excluded.pop(); | |
break; | |
} | |
} | |
} | |
function _transferBothExcluded(address sender, address recipient, uint256 tAmount) private { | |
(uint256 rAmount, uint256 rTransferAmount, uint256 rFee, uint256 tTransferAmount, uint256 tFee, uint256 tLiquidity) = _getValues(tAmount); | |
_tOwned[sender] = _tOwned[sender].sub(tAmount); | |
_rOwned[sender] = _rOwned[sender].sub(rAmount); | |
_tOwned[recipient] = _tOwned[recipient].add(tTransferAmount); | |
_rOwned[recipient] = _rOwned[recipient].add(rTransferAmount); | |
_takeLiquidity(tLiquidity); | |
_reflectFee(rFee, tFee); | |
emit Transfer(sender, recipient, tTransferAmount); | |
} | |
function excludeFromFee(address account) public onlyOwner { | |
_isExcludedFromFee[account] = true; | |
} | |
function includeInFee(address account) public onlyOwner { | |
_isExcludedFromFee[account] = false; | |
} | |
function setTaxFeePercent(uint256 taxFee) external onlyOwner() { | |
_taxFee = taxFee; | |
} | |
function setLiquidityFeePercent(uint256 liquidityFee) external onlyOwner() { | |
_liquidityFee = liquidityFee; | |
} | |
function setMaxTxPercent(uint256 maxTxPercent) external onlyOwner() { | |
_maxTxAmount = _tTotal.mul(maxTxPercent).div( | |
10**2 | |
); | |
} | |
function setSwapAndLiquifyEnabled(bool _enabled) public onlyOwner { | |
swapAndLiquifyEnabled = _enabled; | |
emit SwapAndLiquifyEnabledUpdated(_enabled); | |
} | |
//to recieve ETH from uniswapV2Router when swaping | |
receive() external payable {} | |
function _reflectFee(uint256 rFee, uint256 tFee) private { | |
_rTotal = _rTotal.sub(rFee); | |
_tFeeTotal = _tFeeTotal.add(tFee); | |
} | |
function _getValues(uint256 tAmount) private view returns (uint256, uint256, uint256, uint256, uint256, uint256) { | |
(uint256 tTransferAmount, uint256 tFee, uint256 tLiquidity) = _getTValues(tAmount); | |
(uint256 rAmount, uint256 rTransferAmount, uint256 rFee) = _getRValues(tAmount, tFee, tLiquidity, _getRate()); | |
return (rAmount, rTransferAmount, rFee, tTransferAmount, tFee, tLiquidity); | |
} | |
function _getTValues(uint256 tAmount) private view returns (uint256, uint256, uint256) { | |
uint256 tFee = calculateTaxFee(tAmount); | |
uint256 tLiquidity = calculateLiquidityFee(tAmount); | |
uint256 tTransferAmount = tAmount.sub(tFee).sub(tLiquidity); | |
return (tTransferAmount, tFee, tLiquidity); | |
} | |
function _getRValues(uint256 tAmount, uint256 tFee, uint256 tLiquidity, uint256 currentRate) private pure returns (uint256, uint256, uint256) { | |
uint256 rAmount = tAmount.mul(currentRate); | |
uint256 rFee = tFee.mul(currentRate); | |
uint256 rLiquidity = tLiquidity.mul(currentRate); | |
uint256 rTransferAmount = rAmount.sub(rFee).sub(rLiquidity); | |
return (rAmount, rTransferAmount, rFee); | |
} | |
function _getRate() private view returns(uint256) { | |
(uint256 rSupply, uint256 tSupply) = _getCurrentSupply(); | |
return rSupply.div(tSupply); | |
} | |
function _getCurrentSupply() private view returns(uint256, uint256) { | |
uint256 rSupply = _rTotal; | |
uint256 tSupply = _tTotal; | |
for (uint256 i = 0; i < _excluded.length; i++) { | |
if (_rOwned[_excluded[i]] > rSupply || _tOwned[_excluded[i]] > tSupply) return (_rTotal, _tTotal); | |
rSupply = rSupply.sub(_rOwned[_excluded[i]]); | |
tSupply = tSupply.sub(_tOwned[_excluded[i]]); | |
} | |
if (rSupply < _rTotal.div(_tTotal)) return (_rTotal, _tTotal); | |
return (rSupply, tSupply); | |
} | |
function _takeLiquidity(uint256 tLiquidity) private { | |
uint256 currentRate = _getRate(); | |
uint256 rLiquidity = tLiquidity.mul(currentRate); | |
_rOwned[address(this)] = _rOwned[address(this)].add(rLiquidity); | |
if(_isExcluded[address(this)]) | |
_tOwned[address(this)] = _tOwned[address(this)].add(tLiquidity); | |
} | |
function calculateTaxFee(uint256 _amount) private view returns (uint256) { | |
return _amount.mul(_taxFee).div( | |
10**2 | |
); | |
} | |
function calculateLiquidityFee(uint256 _amount) private view returns (uint256) { | |
return _amount.mul(_liquidityFee).div( | |
10**2 | |
); | |
} | |
function removeAllFee() private { | |
if(_taxFee == 0 && _liquidityFee == 0) return; | |
_previousTaxFee = _taxFee; | |
_previousLiquidityFee = _liquidityFee; | |
_taxFee = 0; | |
_liquidityFee = 0; | |
} | |
function restoreAllFee() private { | |
_taxFee = _previousTaxFee; | |
_liquidityFee = _previousLiquidityFee; | |
} | |
function isExcludedFromFee(address account) public view returns(bool) { | |
return _isExcludedFromFee[account]; | |
} | |
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); | |
} | |
function _transfer( | |
address from, | |
address to, | |
uint256 amount | |
) private { | |
require(from != address(0), "ERC20: transfer from the zero address"); | |
require(to != address(0), "ERC20: transfer to the zero address"); | |
require(amount > 0, "Transfer amount must be greater than zero"); | |
if(from != owner() && to != owner()) | |
require(amount <= _maxTxAmount, "Transfer amount exceeds the maxTxAmount."); | |
// is the token balance of this contract address over the min number of | |
// tokens that we need to initiate a swap + liquidity lock? | |
// also, don't get caught in a circular liquidity event. | |
// also, don't swap & liquify if sender is uniswap pair. | |
uint256 contractTokenBalance = balanceOf(address(this)); | |
if(contractTokenBalance >= _maxTxAmount) | |
{ | |
contractTokenBalance = _maxTxAmount; | |
} | |
bool overMinTokenBalance = contractTokenBalance >= numTokensSellToAddToLiquidity; | |
if ( | |
overMinTokenBalance && | |
!inSwapAndLiquify && | |
from != uniswapV2Pair && | |
swapAndLiquifyEnabled | |
) { | |
contractTokenBalance = numTokensSellToAddToLiquidity; | |
//add liquidity | |
swapAndLiquify(contractTokenBalance); | |
} | |
//indicates if fee should be deducted from transfer | |
bool takeFee = true; | |
//if any account belongs to _isExcludedFromFee account then remove the fee | |
if(_isExcludedFromFee[from] || _isExcludedFromFee[to]){ | |
takeFee = false; | |
} | |
//transfer amount, it will take tax, burn, liquidity fee | |
_tokenTransfer(from,to,amount,takeFee); | |
} | |
function swapAndLiquify(uint256 contractTokenBalance) private lockTheSwap { | |
// split the contract balance into halves | |
uint256 half = contractTokenBalance.div(2); | |
uint256 otherHalf = contractTokenBalance.sub(half); | |
// 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 ELONEn manually sent to the contract | |
uint256 initialBalance = address(this).balance; | |
// swap tokens for ETH | |
swapTokensForEth(half); // <- this breaks the ETH -> HATE swap when swap+liquify is triggered | |
// how much ETH did we just swap into? | |
uint256 newBalance = address(this).balance.sub(initialBalance); | |
// add liquidity to uniswap | |
addLiquidity(otherHalf, newBalance); | |
emit SwapAndLiquify(half, newBalance, otherHalf); | |
} | |
function swapTokensForEth(uint256 tokenAmount) private { | |
// generate the uniswap pair path of token -> weth | |
address[] memory path = new address[](2); | |
path[0] = address(this); | |
path[1] = uniswapV2Router.WETH(); | |
_approve(address(this), address(uniswapV2Router), tokenAmount); | |
// make the swap | |
uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens( | |
tokenAmount, | |
0, // accept any amount of ETH | |
path, | |
address(this), | |
block.timestamp | |
); | |
} | |
function addLiquidity(uint256 tokenAmount, uint256 ethAmount) private { | |
// approve token transfer to cover all possible scenarios | |
_approve(address(this), address(uniswapV2Router), tokenAmount); | |
// add the liquidity | |
uniswapV2Router.addLiquidityETH{value: ethAmount}( | |
address(this), | |
tokenAmount, | |
0, // slippage is unavoidable | |
0, // slippage is unavoidable | |
owner(), | |
block.timestamp | |
); | |
} | |
//this method is responsible for taking all fee, if takeFee is true | |
function _tokenTransfer(address sender, address recipient, uint256 amount,bool takeFee) private { | |
if(!takeFee) | |
removeAllFee(); | |
if (_isExcluded[sender] && !_isExcluded[recipient]) { | |
_transferFromExcluded(sender, recipient, amount); | |
} else if (!_isExcluded[sender] && _isExcluded[recipient]) { | |
_transferToExcluded(sender, recipient, amount); | |
} else if (!_isExcluded[sender] && !_isExcluded[recipient]) { | |
_transferStandard(sender, recipient, amount); | |
} else if (_isExcluded[sender] && _isExcluded[recipient]) { | |
_transferBothExcluded(sender, recipient, amount); | |
} else { | |
_transferStandard(sender, recipient, amount); | |
} | |
if(!takeFee) | |
restoreAllFee(); | |
} | |
function _transferStandard(address sender, address recipient, uint256 tAmount) private { | |
(uint256 rAmount, uint256 rTransferAmount, uint256 rFee, uint256 tTransferAmount, uint256 tFee, uint256 tLiquidity) = _getValues(tAmount); | |
_rOwned[sender] = _rOwned[sender].sub(rAmount); | |
_rOwned[recipient] = _rOwned[recipient].add(rTransferAmount); | |
_takeLiquidity(tLiquidity); | |
_reflectFee(rFee, tFee); | |
emit Transfer(sender, recipient, tTransferAmount); | |
} | |
function _transferToExcluded(address sender, address recipient, uint256 tAmount) private { | |
(uint256 rAmount, uint256 rTransferAmount, uint256 rFee, uint256 tTransferAmount, uint256 tFee, uint256 tLiquidity) = _getValues(tAmount); | |
_rOwned[sender] = _rOwned[sender].sub(rAmount); | |
_tOwned[recipient] = _tOwned[recipient].add(tTransferAmount); | |
_rOwned[recipient] = _rOwned[recipient].add(rTransferAmount); | |
_takeLiquidity(tLiquidity); | |
_reflectFee(rFee, tFee); | |
emit Transfer(sender, recipient, tTransferAmount); | |
} | |
function _transferFromExcluded(address sender, address recipient, uint256 tAmount) private { | |
(uint256 rAmount, uint256 rTransferAmount, uint256 rFee, uint256 tTransferAmount, uint256 tFee, uint256 tLiquidity) = _getValues(tAmount); | |
_tOwned[sender] = _tOwned[sender].sub(tAmount); | |
_rOwned[sender] = _rOwned[sender].sub(rAmount); | |
_rOwned[recipient] = _rOwned[recipient].add(rTransferAmount); | |
_takeLiquidity(tLiquidity); | |
_reflectFee(rFee, tFee); | |
emit Transfer(sender, recipient, tTransferAmount); | |
} | |
} |
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