Contract Name:
WAVEliteToken
Contract Source Code:
File 1 of 1 : WAVEliteToken
pragma solidity ^0.4.18;
/**
* @title Safemath library taken from openzeppline
*
**/
library SafeMath {
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
if (a == 0) {
return 0;
}
uint256 c = a * b;
assert(c / a == b);
return c;
}
function div(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a / b;
return c;
}
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
assert(b <= a);
return a - b;
}
function add(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a + b;
assert(c >= a);
return c;
}
}
/**
* @title ERC20 interface
**/
interface ERC20 {
function totalSupply() external view returns (uint256);
function balanceOf(address _who) external view returns (uint256);
function transfer(address _to, uint256 _value) external returns(bool);
function allowance(address _owner, address _spender) external view returns (uint256);
function transferFrom(address _from, address _to, uint256 _value) external returns (bool);
function approve(address _spender, uint256 _value) external returns (bool);
event Transfer(address indexed from, address indexed to, uint256 value);
event Approval(address indexed owner, address indexed spender, uint256 value);
}
/**
* @title Contract Ownable
**/
contract Ownable {
address public owner;
event OwnershipTransferred(address indexed previousOwner, address indexed newOWner);
modifier onlyOwner() {
require(msg.sender == owner);
_;
}
function transferOwnership(address newOwner) public onlyOwner {
require(newOwner != address(0));
OwnershipTransferred(owner, newOwner);
owner = newOwner;
}
}
/**
* @title Contract Pauseable
**/
contract Pauseable is Ownable {
bool public paused = false;
event Pause();
event Unpause();
modifier whenNotPaused() {
require(!paused);
_;
}
modifier whenPaused() {
require(paused);
_;
}
function pause() onlyOwner whenNotPaused public {
paused = true;
Pause();
}
function unpause() onlyOwner whenPaused public {
paused = false;
Unpause();
}
}
/**
* @title WAVElite Token
**/
contract WAVEliteToken is ERC20, Pauseable {
using SafeMath for uint256;
mapping(address => uint256) internal balances;
mapping(address => mapping(address => uint256)) internal allowed;
uint256 _totalSupply;
string public constant name = "WAVElite";
string public constant symbol = "WAVELT";
uint8 public constant decimals = 18;
uint256 public constant INITIAL_SUPPLY = 45000000 * (10 ** uint256(decimals));
function WAVEliteToken() public {
owner = msg.sender;
_totalSupply = INITIAL_SUPPLY;
balances[msg.sender] = INITIAL_SUPPLY;
Transfer(0x0, msg.sender, INITIAL_SUPPLY);
}
function totalSupply() external view returns (uint256) {
return _totalSupply;
}
function balanceOf(address _who) external view returns (uint256) {
return balances[_who];
}
function transfer(address _to, uint256 _value) external whenNotPaused returns (bool) {
require(_to != address(0));
require(_value <= balances[msg.sender]);
balances[msg.sender] = balances[msg.sender].sub(_value);
balances[_to] = balances[_to].add(_value);
Transfer(msg.sender, _to, _value);
return true;
}
function allowance(address _owner, address _spender) external view returns (uint256) {
return allowed[_owner][_spender];
}
function transferFrom(address _from, address _to, uint256 _value) external whenNotPaused returns (bool) {
require(_to != address(0));
require(_value <= balances[_from]);
require(_value <= allowed[_from][msg.sender]);
balances[_from] = balances[_from].sub(_value);
balances[_to] = balances[_to].add(_value);
allowed[_from][msg.sender] = allowed[_from][msg.sender].sub(_value);
Transfer(_from, _to, _value);
return true;
}
function approve(address _spender, uint256 _value) external whenNotPaused returns (bool) {
allowed[msg.sender][_spender] = _value;
Approval(msg.sender, _spender, _value);
return true;
}
function increaseApproval(address _spender, uint _addValue) public whenNotPaused returns (bool) {
allowed[msg.sender][_spender] = allowed[msg.sender][_spender].add(_addValue);
Approval(msg.sender, _spender, allowed[msg.sender][_spender]);
return true;
}
function decreaseApproval(address _spender, uint _subValue) public whenNotPaused returns (bool) {
if (_subValue >= allowed[msg.sender][_spender]) {
allowed[msg.sender][_spender] = 0;
} else {
allowed[msg.sender][_spender] = allowed[msg.sender][_spender].sub(_subValue);
}
Approval(msg.sender, _spender, allowed[msg.sender][_spender]);
return true;
}
/**
* Burnable
**/
event Burn(address indexed burner, uint256 value);
function burn(uint256 _value) public whenNotPaused {
require(_value <= balances[msg.sender]);
address burner = msg.sender;
balances[burner] = balances[burner].sub(_value);
_totalSupply = _totalSupply.sub(_value);
Burn(burner, _value);
Transfer(burner, address(0), _value);
}
}