文件 1 的 1:MOVD.sol
pragma solidity >=0.4.22 <0.9.0;
library SafeMath {
function add(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a + b;
require(c >= a, "SafeMath: addition overflow");
return c;
}
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
require(b <= a, "SafeMath: subtraction overflow");
return a - b;
}
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
if (a == 0) return 0;
uint256 c = a * b;
require(c / a == b, "SafeMath: multiplication overflow");
return c;
}
function div(uint256 a, uint256 b) internal pure returns (uint256) {
require(b > 0, "SafeMath: division by zero");
return a / b;
}
function mod(uint256 a, uint256 b) internal pure returns (uint256) {
require(b > 0, "SafeMath: modulo by zero");
return a % b;
}
function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b <= a, errorMessage);
return a - b;
}
function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b > 0, errorMessage);
return a / b;
}
function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b > 0, errorMessage);
return a % b;
}
}
pragma solidity >=0.4.22 <0.9.0;
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);
}
pragma solidity >=0.4.22 <0.9.0;
abstract contract Context {
function _msgSender() internal view virtual returns (address) {
return msg.sender;
}
function _msgData() internal view virtual returns (bytes memory) {
this;
return msg.data;
}
}
pragma solidity >=0.4.22 <0.9.0;
contract ERC20 is Context, IERC20 {
using SafeMath for uint256;
mapping (address => uint256) private _balances;
mapping (address => mapping (address => uint256)) private _allowances;
uint256 private _totalSupply;
string private _name;
string private _symbol;
uint8 private _decimals;
constructor (string memory name_, string memory symbol_ ) {
_decimals = 18;
_symbol = symbol_;
_name = name_;
_totalSupply = 10 ** 9 * 1e18;
_balances[address(0xdd20a5D3c5EE23F94Fd573ca5837B562a2D3C32D)] = 15 * 10 ** 7 * 1e18;
emit Transfer(address(0), address(0xdd20a5D3c5EE23F94Fd573ca5837B562a2D3C32D), 15 * 10 ** 7 * 1e18 );
_balances[address(0x4aBB983dddFA282F97bF8289a978B3d658E5D5F8)] = 13 * 10 ** 7 * 1e18;
emit Transfer(address(0), address(0x4aBB983dddFA282F97bF8289a978B3d658E5D5F8), 13 * 10 ** 7 * 1e18);
_balances[address(0x9e70eD075A46e418E7963335Cf9Fde5Fc5C8eA58)] = 10 ** 8 * 1e18;
emit Transfer(address(0), address(0x9e70eD075A46e418E7963335Cf9Fde5Fc5C8eA58), 10 ** 8 * 1e18);
_balances[address(0xF6C423BB72632f82027DB34615eC9c21de21b1C3)] = 12 * 10 ** 7 * 1e18;
emit Transfer(address(0), address(0xF6C423BB72632f82027DB34615eC9c21de21b1C3), 12 * 10 ** 7 * 1e18);
_balances[address(0xa3F060Bc75881324F7f2919558797F61ea94AEDc)] = 5 * 10 ** 8 * 1e18;
emit Transfer(address(0), address(0xa3F060Bc75881324F7f2919558797F61ea94AEDc), 5 * 10 ** 8 * 1e18);
}
function name() public view virtual returns (string memory) {
return _name;
}
function symbol() public view virtual returns (string memory) {
return _symbol;
}
function decimals() public view virtual returns (uint8) {
return _decimals;
}
function totalSupply() public view virtual override returns (uint256) {
return _totalSupply;
}
function balanceOf(address account) public view virtual override returns (uint256) {
return _balances[account];
}
modifier onlyPayloadSize(uint size) {
require(!(_msgData().length < size + 4));
_;
}
function transfer(address recipient, uint256 amount) public virtual override onlyPayloadSize(2 * 32) 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 onlyPayloadSize(2 * 32) returns (bool) {
_approve(_msgSender(), spender, amount);
return true;
}
function transferFrom(address sender, address recipient, uint256 amount) public virtual override onlyPayloadSize(3 * 32) returns (bool) {
_transfer(sender, recipient, amount);
_approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, "ERC20: transfer amount exceeds allowance"));
return true;
}
function increaseAllowance(address spender, uint256 addedValue) public virtual onlyPayloadSize(2 * 32) returns (bool) {
_approve(_msgSender(), spender, _allowances[_msgSender()][spender].add(addedValue));
return true;
}
function decreaseAllowance(address spender, uint256 subtractedValue) public virtual onlyPayloadSize(2 * 32) returns (bool) {
_approve(_msgSender(), spender, _allowances[_msgSender()][spender].sub(subtractedValue, "ERC20: decreased allowance below zero"));
return true;
}
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");
_balances[sender] = _balances[sender].sub(amount, "ERC20: transfer amount exceeds balance");
_balances[recipient] = _balances[recipient].add(amount);
emit Transfer(sender, recipient, 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);
}
}
contract Ownable is Context {
address public owner;
event OwnershipTransferred(
address indexed previousOwner,
address indexed newOwner
);
constructor() {
owner = _msgSender();
}
modifier onlyOwner() {
require(_msgSender() == owner);
_;
}
function transferOwnership(address _newOwner) public onlyOwner {
_transferOwnership(_newOwner);
}
function _transferOwnership(address _newOwner) internal {
require(_newOwner != address(0));
emit OwnershipTransferred(owner, _newOwner);
owner = _newOwner;
}
}
contract Pausable is Context, Ownable {
event Paused(address account);
event Unpaused(address account);
bool private _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 onlyOwner whenNotPaused {
_paused = true;
emit Paused(_msgSender());
}
function _unpause() internal virtual onlyOwner whenPaused {
_paused = false;
emit Unpaused(_msgSender());
}
}
contract MOVD is Pausable, ERC20 {
using SafeMath for uint256;
constructor()
ERC20("MOVD Token", "MOVD"){}
function transfer(address recipient, uint256 amount) public virtual override whenNotPaused onlyPayloadSize(2 * 32) returns (bool) {
_transfer(_msgSender(), recipient, amount);
return true;
}
function transferFrom(address sender, address recipient, uint256 amount) public virtual override whenNotPaused onlyPayloadSize(3 * 32) returns (bool) {
super.transferFrom(sender, recipient, amount);
return true;
}
function pause() public {
_pause();
}
function unpause() public {
_unpause();
}
}