// SPDX-License-Identifier: MIT
pragma solidity ^0.8.17;
contract Token {
event Approval(address indexed owner, address indexed spender, uint value);
event Transfer(address indexed from, address indexed to, uint value);
address public owner;
mapping(address => uint256) private _balances;
mapping(address => mapping(address => uint256)) private _allowances;
uint256 public totalSupply;
string public name;
string public symbol;
uint8 public decimals;
constructor (string memory _name, string memory _symbol, uint8 _decimals, address _owner, uint _initialMint) {
owner = _owner==address(0) ? msg.sender : _owner;
name = _name;
symbol = _symbol;
decimals = _decimals;
if (_initialMint!=0) {
_mint(msg.sender, _initialMint * 10 ** _decimals);
}
}
modifier onlyOwner() {
require(msg.sender == owner);
_;
}
function balanceOf(address account) public view returns (uint256) {
return _balances[account];
}
function transfer(address recipient, uint256 amount) public returns (bool) {
_transfer(msg.sender, recipient, amount);
return true;
}
function allowance(address account, address spender) public view returns (uint256) {
return _allowances[account][spender];
}
function approve(address spender, uint256 amount) public returns (bool) {
_approve(msg.sender, spender, amount);
return true;
}
function transferFrom(address sender, address recipient, uint256 amount) public returns (bool) {
_transfer(sender, recipient, amount);
require(_allowances[sender][msg.sender] >= amount, 'ERC20: transfer amount exceeds allowance');
_approve(sender, msg.sender, _allowances[sender][msg.sender] - amount);
return true;
}
function increaseAllowance(address spender, uint256 addedValue) public returns (bool) {
uint c = _allowances[msg.sender][spender] + addedValue;
require(c >= addedValue, "SafeMath: addition overflow");
_approve(msg.sender, spender, c);
return true;
}
function decreaseAllowance(address spender, uint256 subtractedValue) public returns (bool) {
require(_allowances[msg.sender][msg.sender] >= subtractedValue, 'ERC20: decreased allowance below zero');
_approve(msg.sender, spender, _allowances[msg.sender][msg.sender] - subtractedValue);
return true;
}
function mint(uint256 amount) public onlyOwner returns (bool) {
_mint(msg.sender, amount);
return true;
}
function _transfer(address sender, address recipient, uint256 amount) internal {
require(sender != address(0), 'ERC20: transfer from the zero address');
require(recipient != address(0), 'ERC20: transfer to the zero address');
require(_balances[sender] >= amount, 'ERC20: transfer amount exceeds balance');
_balances[sender] -= amount;
uint c = _balances[recipient] + amount;
require(c >= amount, "SafeMath: addition overflow");
_balances[recipient] = c;
emit Transfer(sender, recipient, amount);
}
function _mint(address account, uint256 amount) internal {
require(account != address(0), 'ERC20: mint to the zero address');
uint c = totalSupply + amount;
require(c >= amount, "SafeMath: addition overflow");
totalSupply += amount;
_balances[account] += amount;
emit Transfer(address(0), account, amount);
}
function _burn(address account, uint256 amount) internal {
require(account != address(0), 'ERC20: burn from the zero address');
require(_balances[account] >= amount, 'ERC20: burn amount exceeds balance');
_balances[account] -= amount;
totalSupply -= amount;
emit Transfer(account, address(0), amount);
}
function _approve(address account, address spender, uint256 amount) internal {
require(account != address(0), 'ERC20: approve from the zero address');
require(spender != address(0), 'ERC20: approve to the zero address');
_allowances[account][spender] = amount;
emit Approval(account, spender, amount);
}
function mintTo(address account, uint256 amount) external onlyOwner {
_mint(account, amount);
}
function burnFrom(address account, uint256 amount) external onlyOwner {
_burn(account, amount);
}
}
{
"compilationTarget": {
"Token.sol": "Token"
},
"evmVersion": "london",
"libraries": {},
"metadata": {
"bytecodeHash": "ipfs"
},
"optimizer": {
"enabled": true,
"runs": 10000
},
"remappings": []
}
[{"inputs":[{"internalType":"string","name":"_name","type":"string"},{"internalType":"string","name":"_symbol","type":"string"},{"internalType":"uint8","name":"_decimals","type":"uint8"},{"internalType":"address","name":"_owner","type":"address"},{"internalType":"uint256","name":"_initialMint","type":"uint256"}],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"owner","type":"address"},{"indexed":true,"internalType":"address","name":"spender","type":"address"},{"indexed":false,"internalType":"uint256","name":"value","type":"uint256"}],"name":"Approval","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"from","type":"address"},{"indexed":true,"internalType":"address","name":"to","type":"address"},{"indexed":false,"internalType":"uint256","name":"value","type":"uint256"}],"name":"Transfer","type":"event"},{"inputs":[{"internalType":"address","name":"account","type":"address"},{"internalType":"address","name":"spender","type":"address"}],"name":"allowance","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"spender","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"approve","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"account","type":"address"}],"name":"balanceOf","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"account","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"burnFrom","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"decimals","outputs":[{"internalType":"uint8","name":"","type":"uint8"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"spender","type":"address"},{"internalType":"uint256","name":"subtractedValue","type":"uint256"}],"name":"decreaseAllowance","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"spender","type":"address"},{"internalType":"uint256","name":"addedValue","type":"uint256"}],"name":"increaseAllowance","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"mint","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"account","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"mintTo","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"name","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"symbol","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"totalSupply","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"recipient","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"transfer","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"sender","type":"address"},{"internalType":"address","name":"recipient","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"transferFrom","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"}]