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openzeppelin-contracts/contracts/token/MintableToken.sol

43 lines
975 B

pragma solidity ^0.4.8;
import './StandardToken.sol';
import '../ownership/Ownable.sol';
/**
* Mintable token
*
* Simple ERC20 Token example, with mintable token creation
* Issue:
* https://github.com/OpenZeppelin/zeppelin-solidity/issues/120
* Based on code by TokenMarketNet:
* https://github.com/TokenMarketNet/ico/blob/master/contracts/MintableToken.sol
*/
contract MintableToken is StandardToken, Ownable {
event Mint(address indexed to, uint value);
event MintFinished();
bool public mintingFinished = false;
uint public totalSupply = 0;
modifier canMint() {
if(mintingFinished) throw;
_;
}
function mint(address _to, uint _amount) onlyOwner canMint returns (bool) {
totalSupply = totalSupply.add(_amount);
balances[_to] = balances[_to].add(_amount);
Mint(_to, _amount);
return true;
}
function finishMinting() onlyOwner returns (bool) {
mintingFinished = true;
MintFinished();
return true;
}
}