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) {
this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691
return msg.data;
}
}abstract contract Ownable {
address internal _owner;
event OwnershipTransferred(
address indexed currentOwner,
address indexed newOwner
);
constructor() {
_owner = msg.sender;
emit OwnershipTransferred(address(0), msg.sender);
}
modifier onlyOwner() {
require(
msg.sender == _owner,
"Ownable : Function called by unauthorized user."
);
_;
}
function owner() external view returns (address ownerAddress) {
ownerAddress = _owner;
}
function transferOwnership(address newOwner)
public
onlyOwner
returns (bool success)
{
require(newOwner != address(0), "Ownable/transferOwnership : cannot transfer ownership to zero address");
success = _transferOwnership(newOwner);
}
function renounceOwnership() external onlyOwner returns (bool success) {
success = _transferOwnership(address(0));
}
function _transferOwnership(address newOwner) internal returns (bool success) {
emit OwnershipTransferred(_owner, newOwner);
_owner = newOwner;
success = true;
}
}
interface IERC20 {
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 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);
}
abstract contract ERC20 is Context, IERC20
{
uint256 internal _totalSupply;
mapping (address => uint256) internal _balances;
mapping (address => mapping (address => uint256)) internal _allowances;
constructor () {
}
function _transfer(address sender, address recipient, uint256 amount) internal virtual {
require(sender != address(0), "ERC20: transfer from the zero address");
require(recipient != address(0), "ERC20: transfer to the zero address");
uint256 senderBalance = _balances[sender];
require(senderBalance >= amount, "ERC20: transfer amount exceeds balance");
unchecked {
_balances[sender] = senderBalance - amount;
}
_balances[recipient] += amount;
emit Transfer(sender, recipient, amount);
}
function _mint(address _to, uint256 _amount) internal virtual
{
_totalSupply = _totalSupply + _amount;
_balances[_to] = _balances[_to] + _amount;
emit Transfer(address(0), _to, _amount);
}
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);
}
function allowance(address owner, address spender) public view virtual override returns (uint256) {
return _allowances[owner][spender];
}
function totalSupply() public view virtual override returns (uint256) {
return _totalSupply;
}
function balanceOf(address account) public view virtual override returns (uint256) {
return _balances[account];
}
}
abstract contract ERC20Lockable is ERC20, Ownable {
struct LockInfo {
uint256 amount;
uint256 due;
}
mapping(address => LockInfo[]) internal _locks;
mapping(address => uint256) internal _totalLocked;
event Lock(address indexed from, uint256 amount, uint256 due);
event Unlock(address indexed from, uint256 amount);
modifier checkLock(address from, uint256 amount) {
require(_balances[from] >= _totalLocked[from] + amount, "ERC20Lockable/Cannot send more than unlocked amount");
_;
}
function _lock(address from, uint256 amount, uint256 due)
internal
returns (bool success)
{
require(due > block.timestamp, "ERC20Lockable/lock : Cannot set due to past");
require(
_balances[from] >= amount + _totalLocked[from],
"ERC20Lockable/lock : locked total should be smaller than balance"
);
_totalLocked[from] = _totalLocked[from] + amount;
_locks[from].push(LockInfo(amount, due));
emit Lock(from, amount, due);
success = true;
}
function _unlock(address from, uint256 index) internal returns (bool success) {
LockInfo storage lock = _locks[from][index];
_totalLocked[from] = _totalLocked[from] - lock.amount;
emit Unlock(from, lock.amount);
_locks[from][index] = _locks[from][_locks[from].length - 1];
_locks[from].pop();
success = true;
}
function unlock(address from, uint256 idx) external returns(bool success){
require(_locks[from][idx].due < block.timestamp,"ERC20Lockable/unlock: cannot unlock before due");
return _unlock(from, idx);
}
function unlockAll(address from) external returns (bool success) {
for(uint256 i = 0; i < _locks[from].length;){
i++;
if(_locks[from][i - 1].due < block.timestamp){
if(_unlock(from, i - 1)){
i--;
}
}
}
success = true;
}
function releaseLock(address from)
external
onlyOwner
returns (bool success)
{
for(uint256 i = 0; i < _locks[from].length;){
i++;
if(_unlock(from, i - 1)){
i--;
}
}
success = true;
}
function transferWithLockUp(address recipient, uint256 amount, uint256 due)
external
onlyOwner
returns (bool success)
{
require(
recipient != address(0),
"ERC20Lockable/transferWithLockUp : Cannot send to zero address"
);
_transfer(msg.sender, recipient, amount);
_lock(recipient, amount, due);
success = true;
}
function lockInfo(address locked, uint256 index)
external
view
returns (uint256 amount, uint256 due)
{
LockInfo memory lock = _locks[locked][index];
amount = lock.amount;
due = lock.due;
}
function totalLocked(address locked) external view returns(uint256 amount, uint256 length){
amount = _totalLocked[locked];
length = _locks[locked].length;
}
}
abstract contract ERC20Burnable is ERC20
,ERC20Lockable
{
function burn(uint256 amount) public
checkLock(_msgSender(), amount)
virtual {
_burn(_msgSender(), amount);
}
function burnFrom(address account, uint256 amount) public
checkLock(account, amount)
virtual {
uint256 currentAllowance = allowance(account, _msgSender());
require(currentAllowance >= amount, "ERC20: burn amount exceeds allowance");
unchecked {
_approve(account, _msgSender(), currentAllowance - amount);
}
_burn(account, amount);
}
function _burn(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: burn from the zero address");
uint256 accountBalance = _balances[account];
require(accountBalance >= amount, "ERC20: burn amount exceeds balance");
unchecked {
_balances[account] = accountBalance - amount;
}
_totalSupply -= amount;
emit Transfer(account, address(0), amount);
}
}
contract Token is
IERC20Metadata
,ERC20Burnable
{
string private _name;
string private _symbol;
uint8 private _decimals;
constructor (uint256 initial_supply_, uint8 decimals_,string memory name_, string memory symbol_)
{
_name = name_;
_symbol = symbol_;
_decimals = decimals_;
_balances[_msgSender()] = initial_supply_;
_totalSupply = initial_supply_;
emit Transfer(address(0), _msgSender(), _totalSupply);
}
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 _decimals;
}
function transfer(address recipient, uint256 amount) public
checkLock(_msgSender(), amount)
virtual override returns (bool) {
_transfer(_msgSender(), recipient, amount);
return true;
}
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
checkLock(sender, amount)
virtual override returns (bool) {
_transfer(sender, recipient, amount);
uint256 currentAllowance = _allowances[sender][_msgSender()];
require(currentAllowance >= amount, "ERC20: 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, "ERC20: decreased allowance below zero");
unchecked {
_approve(_msgSender(), spender, currentAllowance - subtractedValue);
}
return true;
}
}
{
"compilationTarget": {
"Token.sol": "Token"
},
"evmVersion": "istanbul",
"libraries": {},
"metadata": {
"bytecodeHash": "ipfs"
},
"optimizer": {
"enabled": true,
"runs": 200
},
"remappings": []
}
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nt256","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"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[{"internalType":"bool","name":"success","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"recipient","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"},{"internalType":"uint256","name":"due","type":"uint256"}],"name":"transferWithLockUp","outputs":[{"internalType":"bool","name":"success","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"uint256","name":"idx","type":"uint256"}],"name":"unlock","outputs":[{"internalType":"bool","name":"success","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"from","type":"address"}],"name":"unlockAll","outputs":[{"internalType":"bool","name":"success","type":"bool"}],"stateMutability":"nonpayable","type":"function"}]