/**
*Submitted for verification at Etherscan.io on 2020-04-22
*/
pragma solidity ^0.5.15;
contract ERC20 {
function totalSupply() external view returns (uint256 _totalSupply);
function balanceOf(address addr_) external view returns (uint256);
function transfer(address _to, uint256 _value) external returns (bool success);
function transferFrom(address from_, address to_, uint256 _value) external returns (bool);
function approve(address spender_, uint256 value_) external returns (bool);
function allowance(address _owner, address _spender) external returns (uint256 remaining);
event Transfer(address indexed _from, address indexed _to, uint256 _value);
event Approval(address indexed _owner, address indexed _spender, uint256 _value);
function lock_address_erc(address address_lock, uint256 lockStartTime, uint256 lockEndTime) external returns (bool) ;
}
library SafeMath {
function mul(uint256 a, uint256 b) internal returns (uint256) {
uint256 c = a * b;
assert(a == 0 || c / a == b);
return c;
}
function div(uint256 a, uint256 b) internal returns (uint256) {
// assert(b > 0); // Solidity automatically throws when dividing by 0
uint256 c = a / b;
// assert(a == b * c + a % b); // There is no case in which this doesn't hold
return c;
}
function sub(uint256 a, uint256 b) internal returns (uint256) {
assert(b <= a);
return a - b;
}
function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b <= a, errorMessage);
uint256 c = a - b;
return c;
}
function add(uint256 a, uint256 b) internal returns (uint256) {
uint256 c = a + b;
assert(c >= a);
return c;
}
}
contract TokenERC20 is ERC20 {
using SafeMath for uint256;
string public constant symbol = "stargram";
string public constant name = "stargram token";
uint256 public constant decimals = 8;
address owner;
event Transfer(address indexed _from, address indexed _to, uint256 _value);
event Approval(address indexed _owner, address indexed _spender, uint256 _value);
uint256 private constant totalsupply_ = 400000000000000000;
mapping(address => uint256) private balanceof_;
mapping(address => mapping(address => uint256)) private allowance_;
constructor() public{
balanceof_[msg.sender] = totalsupply_;
owner = msg.sender;
}
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");
balanceof_[sender] = balanceof_[sender].sub(amount, "ERC20: transfer amount exceeds balance");
balanceof_[recipient] = balanceof_[recipient].add(amount);
emit Transfer(sender, recipient, amount);
}
function totalSupply() external view returns(uint256){
return totalsupply_;
}
function balanceOf(address addr_) external view returns(uint256){
return balanceof_[addr_];
}
function transfer(address _to, uint256 _value) public returns (bool) {
require(_value <= balanceof_[msg.sender]);
require(_to != msg.sender);
bool isLockAddress = false ;
for (uint i = 0 ; i < lockbox_address_arr.length ; i ++ ){
if ( lockbox_address_arr[i].address_lock == msg.sender ){
if (lockbox_address_arr[i].lockStartTime < now && now < lockbox_address_arr[i].lockEndTime){
isLockAddress = true;
}
}
}
require(!isLockAddress);
if (!isLockAddress){
_transfer(msg.sender, _to, _value);
return true;
}
return false;
}
function transferFrom(address from_, address to_, uint256 _value) external returns (bool){
require(_value <= balanceof_[from_]);
require(_value <= allowance_[from_][msg.sender]);
require(to_ != address(0));
balanceof_[from_] =balanceof_[from_].sub(_value);
allowance_[from_][msg.sender] = allowance_[from_][msg.sender].sub(_value);
balanceof_[to_] =balanceof_[to_].add(_value);
emit Transfer(from_, to_, _value);
return true;
}
function approve(address spender_, uint256 value_) external returns (bool){
require(spender_ != address(0));
bool status = false;
if(balanceof_[msg.sender] >= value_){
allowance_[msg.sender][spender_] = value_;
emit Approval(msg.sender, spender_, value_);
status = true;
}
return status;
}
function allowance(address _owner, address _spender) external returns (uint256 remaining) {
return allowance_[_owner][_spender];
}
struct lock_address{
address address_lock;
uint256 lockStartTime;
uint256 lockEndTime;
}
lock_address[] public lockbox_address_arr;
modifier onlyOwner {
require(msg.sender == owner) ;
_;
}
function lock_address_erc(address address_lock, uint256 lockStartTime, uint256 lockEndTime) onlyOwner external returns (bool) {
uint contain = isExitLockAddress(address_lock);
if (contain == 0) {
lockbox_address_arr.length++;
lockbox_address_arr[lockbox_address_arr.length-1].address_lock = address_lock;
lockbox_address_arr[lockbox_address_arr.length-1].lockStartTime = lockStartTime;
lockbox_address_arr[lockbox_address_arr.length-1].lockEndTime = lockEndTime;
}else {
lockbox_address_arr[contain -1].address_lock = address_lock;
lockbox_address_arr[contain -1].lockStartTime = lockStartTime;
lockbox_address_arr[contain -1].lockEndTime = lockEndTime;
}
return true;
}
function getAddressLock(uint indexList) external view returns (address addresslock, uint256 lockStartTime,uint256 lockEndTime, uint index, uint lenght) {
require(indexList >= 0);
if (indexList < lockbox_address_arr.length) {
return (lockbox_address_arr[indexList].address_lock,
lockbox_address_arr[indexList].lockStartTime,
lockbox_address_arr[indexList].lockEndTime,
indexList,
lockbox_address_arr.length );
}
}
function getTimeAddressLock(address address_) external view returns (address addresslock, uint256 lockStartTime,uint256 lockEndTime, uint index, uint lenght) {
require(address_ != address(0));
uint contain = isExitLockAddress(address_);
if (contain > 0 ){
return (lockbox_address_arr[contain -1].address_lock,
lockbox_address_arr[contain -1].lockStartTime,
lockbox_address_arr[contain -1].lockEndTime,
contain -1,
lockbox_address_arr.length );
}
}
function isExitLockAddress(address _address) internal view returns (uint) {
uint isExist = 0 ;
for (uint i = 0 ; i < lockbox_address_arr.length ; i ++ ){
if ( lockbox_address_arr[i].address_lock == _address ){
return isExist = i + 1 ;
}
}
return isExist ;
}
}
{
"compilationTarget": {
"TokenERC20.sol": "TokenERC20"
},
"evmVersion": "istanbul",
"libraries": {},
"optimizer": {
"enabled": false,
"runs": 200
},
"remappings": []
}
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