51 lines
1.3 KiB
Solidity
51 lines
1.3 KiB
Solidity
pragma solidity ^0.5.0;
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import "zos-lib/contracts/Initializable.sol";
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import "../../math/SafeMath.sol";
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import "../validation/TimedCrowdsale.sol";
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/**
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* @title FinalizableCrowdsale
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* @dev Extension of Crowdsale with a one-off finalization action, where one
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* can do extra work after finishing.
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*/
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contract FinalizableCrowdsale is Initializable, TimedCrowdsale {
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using SafeMath for uint256;
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bool private _finalized;
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event CrowdsaleFinalized();
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/**
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* @return true if the crowdsale is finalized, false otherwise.
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*/
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function finalized() public view returns (bool) {
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return _finalized;
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}
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/**
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* @dev Must be called after crowdsale ends, to do some extra finalization
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* work. Calls the contract's finalization function.
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*/
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function finalize() public {
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require(!_finalized);
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require(hasClosed());
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_finalized = true;
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_finalization();
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emit CrowdsaleFinalized();
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}
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/**
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* @dev Can be overridden to add finalization logic. The overriding function
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* should call super._finalization() to ensure the chain of finalization is
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* executed entirely.
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*/
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function _finalization() internal {
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// solhint-disable-previous-line no-empty-blocks
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}
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uint256[50] private ______gap;
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}
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