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February 18, 2022 08:59
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// contracts/MyToken.sol | |
// SPDX-License-Identifier: MIT | |
pragma solidity >=0.7.0 <0.9.0;//^0.8.0; | |
/** | |
* Name: The Hero Seri | |
* Symbol: HSI | |
* https://heroseri.com | |
* https://heroseri.io | |
**/ | |
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 Pausable is Context { | |
event Paused(address account); | |
event Unpaused(address account); | |
bool private _paused; | |
constructor() { | |
_paused = false; | |
} | |
function paused() public view virtual returns (bool) { | |
return _paused; | |
} | |
modifier whenNotPaused() { | |
require(!paused(), "Pausable: paused"); | |
_; | |
} | |
modifier whenPaused() { | |
require(paused(), "Pausable: not paused"); | |
_; | |
} | |
function _pause() internal virtual whenNotPaused { | |
_paused = true; | |
emit Paused(_msgSender()); | |
} | |
function _unpause() internal virtual whenPaused { | |
_paused = false; | |
emit Unpaused(_msgSender()); | |
} | |
} | |
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 IBEP20 { | |
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 IBEP20Metadata is IBEP20 { | |
function name() external view returns (string memory); | |
function symbol() external view returns (string memory); | |
function decimals() external view returns (uint8); | |
} | |
contract BEP20 is Context, IBEP20, IBEP20Metadata { | |
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, "BEP20: 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, "BEP20: 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), "BEP20: transfer from the zero address"); | |
require(recipient != address(0), "BEP20: transfer to the zero address"); | |
_beforeTokenTransfer(sender, recipient, amount); | |
uint256 senderBalance = _balances[sender]; | |
require(senderBalance >= amount, "BEP20: 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), "BEP20: 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), "BEP20: burn from the zero address"); | |
_beforeTokenTransfer(account, address(0), amount); | |
uint256 accountBalance = _balances[account]; | |
require(accountBalance >= amount, "BEP20: 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), "BEP20: approve from the zero address"); | |
require(spender != address(0), "BEP20: 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 {} | |
} | |
abstract contract BEP20Burnable is Context, BEP20 { | |
function burn(uint256 amount) public virtual { | |
_burn(_msgSender(), amount); | |
} | |
function burnFrom(address account, uint256 amount) public virtual { | |
uint256 currentAllowance = allowance(account, _msgSender()); | |
require(currentAllowance >= amount, "BEP20: burn amount exceeds allowance"); | |
unchecked { | |
_approve(account, _msgSender(), currentAllowance - amount); | |
} | |
_burn(account, amount); | |
} | |
} | |
contract HSIToken is BEP20, BEP20Burnable, Ownable, Pausable { | |
string public _tokenName = "The My Test Token";//The Hero Seri Token | |
string public _tokenSymbol = "MTHSTK";//HSI | |
string public _tokenVersion = "v1.00"; | |
uint256 public _tokenMaxSupply = 1000000000 *(10 ** uint256(decimals())); | |
constructor() | |
BEP20(_tokenName, _tokenSymbol) | |
{ | |
_mint(msg.sender, _tokenMaxSupply); | |
} | |
function pause() public onlyOwner { | |
_pause(); | |
} | |
function unpause() public onlyOwner { | |
_unpause(); | |
} | |
} |
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