pragma solidity 0.4.18;
/**
* @title Ownable
* @dev The Ownable contract has an owner address, and provides basic authorization control
* functions, this simplifies the implementation of "user permissions".
*/
contract Ownable {
address public owner;
/**
* @dev The Ownable constructor sets the original `owner` of the contract to the sender account.
*/
function Ownable() public {
owner = msg.sender;
}
/**
* @dev Throws if called by any account other than the owner.
*/
modifier onlyOwner() {
require(msg.sender == owner);
_;
}
/**
* @dev Allows the current owner to transfer control of the contract to a newOwner.
* @param newOwner The address to transfer ownership to.
*/
function transferOwnership(address newOwner) public onlyOwner {
if (newOwner != address(0)) {
owner = newOwner;
}
}
}
/**
* @title Pausable
* @dev Base contract which allows children to implement an emergency stop mechanism.
*/
contract Pausable is Ownable {
event Pause();
event Unpause();
bool public paused = false;
function Pausable() public {}
/**
* @dev modifier to allow actions only when the contract IS paused
*/
modifier whenNotPaused() {
require(!paused);
_;
}
/**
* @dev modifier to allow actions only when the contract IS NOT paused
*/
modifier whenPaused {
require(paused);
_;
}
/**
* @dev called by the owner to pause, triggers stopped state
*/
function pause() public onlyOwner whenNotPaused {
paused = true;
Pause();
}
/**
* @dev called by the owner to unpause, returns to normal state
*/
function unpause() public onlyOwner whenPaused {
paused = false;
Unpause();
}
}
/**
* @title SafeMath
* @dev Math operations with safety checks that throw on error
*/
contract SafeMath {
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a * b;
assert(a == 0 || 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;
}
}
contract Denaro is Pausable, SafeMath {
uint256 public totalSupply;
mapping(address => uint) public balances;
mapping (address => mapping (address => uint)) public allowed;
// ERC20 properties
string public constant name = "Denaro";
string public constant symbol = "DNO";
uint8 public constant decimals = 7;
// custom properties
bool public mintingFinished = false;
uint256 public constant MINTING_LIMIT = 100000000 * (uint256(10) ** decimals);
event Transfer(address indexed from, address indexed to, uint256 value);
event Approval(address indexed owner, address indexed spender, uint256 value);
event Mint(address indexed to, uint256 amount);
event MintFinished();
function Denaro() public {}
function() public payable {
revert();
}
function balanceOf(address _owner) public view returns (uint256) {
return balances[_owner];
}
function transfer(address _to, uint _value) public whenNotPaused returns (bool) {
balances[msg.sender] = sub(balances[msg.sender], _value);
balances[_to] = add(balances[_to], _value);
Transfer(msg.sender, _to, _value);
return true;
}
function transferFrom(address _from, address _to, uint _value) public whenNotPaused returns (bool) {
var _allowance = allowed[_from][msg.sender];
balances[_to] = add(balances[_to], _value);
balances[_from] = sub(balances[_from], _value);
allowed[_from][msg.sender] = sub(_allowance, _value);
Transfer(_from, _to, _value);
return true;
}
function approve(address _spender, uint _value) public whenNotPaused returns (bool) {
//https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
require((_value == 0) || (allowed[msg.sender][_spender] == 0));
allowed[msg.sender][_spender] = _value;
Approval(msg.sender, _spender, _value);
return true;
}
function allowance(address _owner, address _spender) public view returns (uint256) {
return allowed[_owner][_spender];
}
modifier canMint() {
require(!mintingFinished);
_;
}
function mint(address _to, uint256 _amount) public onlyOwner canMint {
totalSupply = add(totalSupply, _amount);
require(totalSupply <= MINTING_LIMIT);
balances[_to] = add(balances[_to], _amount);
Mint(_to, _amount);
}
function finishMinting() public onlyOwner {
require(!mintingFinished);
mintingFinished = true;
MintFinished();
}
}
{
"compilationTarget": {
"Denaro.sol": "Denaro"
},
"libraries": {},
"optimizer": {
"enabled": false,
"runs": 0
},
"remappings": []
}
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