62 lines
1.5 KiB
Solidity
62 lines
1.5 KiB
Solidity
pragma solidity ^0.4.24;
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import "./StandardToken.sol";
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import "../../ownership/Ownable.sol";
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/**
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* @title Mintable token
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* @dev Simple ERC20 Token example, with mintable token creation
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* @dev Issue: * https://github.com/OpenZeppelin/openzeppelin-solidity/issues/120
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* Based on code by TokenMarketNet: https://github.com/TokenMarketNet/ico/blob/master/contracts/MintableToken.sol
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*/
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contract MintableToken is StandardToken, Ownable {
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event Mint(address indexed to, uint256 amount);
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event MintFinished();
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bool public mintingFinished = false;
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modifier canMint() {
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require(!mintingFinished);
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_;
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}
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modifier hasMintPermission() {
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require(msg.sender == owner);
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_;
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}
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/**
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* @dev Function to mint tokens
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* @param _to The address that will receive the minted tokens.
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* @param _amount The amount of tokens to mint.
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* @return A boolean that indicates if the operation was successful.
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*/
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function mint(
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address _to,
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uint256 _amount
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)
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hasMintPermission
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canMint
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public
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returns (bool)
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{
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totalSupply_ = totalSupply_.add(_amount);
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balances[_to] = balances[_to].add(_amount);
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emit Mint(_to, _amount);
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emit Transfer(address(0), _to, _amount);
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return true;
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}
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/**
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* @dev Function to stop minting new tokens.
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* @return True if the operation was successful.
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*/
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function finishMinting() onlyOwner canMint public returns (bool) {
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mintingFinished = true;
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emit MintFinished();
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return true;
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}
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}
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