Contract Source Code:
File 1 of 1 : Token
pragma solidity ^0.4.15;
library SafeMath {
function mul(uint256 a, uint256 b) internal constant returns (uint256) {
uint256 c = a * b;
assert(a == 0 || c / a == b);
return c;
}
function div(uint256 a, uint256 b) internal constant 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 constant returns (uint256) {
assert(b <= a);
return a - b;
}
function add(uint256 a, uint256 b) internal constant returns (uint256) {
uint256 c = a + b;
assert(c >= a);
return c;
}
}
contract ERC20 {
uint256 public totalSupply;
function balanceOf(address who) public constant returns (uint256);
function transfer(address to, uint256 value) public returns (bool);
function allowance(address owner, address spender) public constant returns (uint256);
function transferFrom(address from, address to, uint256 value) public returns (bool);
function approve(address spender, uint256 value) public returns (bool);
event Approval(address indexed owner, address indexed spender, uint256 value);
event Transfer(address indexed from, address indexed to, uint256 value);
}
contract StandartToken is ERC20 {
using SafeMath for uint256;
mapping(address => uint256) balances;
mapping (address => mapping (address => uint256)) allowed;
bool public isStarted = false;
modifier isStartedOnly() {
require(isStarted);
_;
}
function transfer(address _to, uint256 _value) public returns (bool) {
require(_to != address(0));
require(_value <= balances[msg.sender]);
// SafeMath.sub will throw if there is not enough balance.
balances[msg.sender] = balances[msg.sender].sub(_value);
balances[_to] = balances[_to].add(_value);
Transfer(msg.sender, _to, _value);
return true;
}
function balanceOf(address _owner) public constant returns (uint256 balance) {
return balances[_owner];
}
function transferFrom(address _from, address _to, uint256 _value) public 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) public returns (bool) {
allowed[msg.sender][_spender] = _value;
Approval(msg.sender, _spender, _value);
return true;
}
function allowance(address _owner, address _spender) public constant returns (uint256 remaining) {
return allowed[_owner][_spender];
}
function increaseApproval (address _spender, uint _addedValue) public returns (bool success) {
allowed[msg.sender][_spender] = allowed[msg.sender][_spender].add(_addedValue);
Approval(msg.sender, _spender, allowed[msg.sender][_spender]);
return true;
}
function decreaseApproval (address _spender, uint _subtractedValue) public returns (bool success) {
uint oldValue = allowed[msg.sender][_spender];
if (_subtractedValue > oldValue) {
allowed[msg.sender][_spender] = 0;
} else {
allowed[msg.sender][_spender] = oldValue.sub(_subtractedValue);
}
Approval(msg.sender, _spender, allowed[msg.sender][_spender]);
return true;
}
}
contract Owned {
address public owner;
address public newOwner;
modifier onlyOwner() {
require(msg.sender == owner);
_;
}
function Owned() public {
owner = msg.sender;
}
function transferOwnership(address _newOwner) onlyOwner public {
newOwner = _newOwner;
}
function acceptOwnership() onlyOwner public {
OwnershipTransferred(owner, newOwner);
owner = newOwner;
}
event OwnershipTransferred(address indexed _from, address indexed _to);
}
contract Token is Owned, StandartToken {
string public name = "NEEO";
string public symbol = "NEEO";
uint public decimals = 18;
address public crowdsaleMinter;
event Mint(address indexed to, uint256 amount);
modifier canMint() {
require(!isStarted);
_;
}
modifier onlyCrowdsaleMinter(){
require(msg.sender == crowdsaleMinter);
_;
}
function () public {
revert();
}
function setCrowdsaleMinter(address _crowdsaleMinter)
public
onlyOwner
canMint
{
crowdsaleMinter = _crowdsaleMinter;
}
function mint(address _to, uint256 _amount)
onlyCrowdsaleMinter
canMint
public
returns (bool)
{
totalSupply = totalSupply.add(_amount);
balances[_to] = balances[_to].add(_amount);
Mint(_to, _amount);
return true;
}
function start()
onlyCrowdsaleMinter
canMint
public
returns (bool)
{
isStarted = true;
return true;
}
}