ad12381549
* update solidity-coverage to ^0.5.0 * update truffle dependency to ^4.1.8 * update solium to ^1.1.7 * update all contracts to solidity ^0.4.23
73 lines
1.6 KiB
Solidity
73 lines
1.6 KiB
Solidity
pragma solidity ^0.4.23;
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import "../../math/SafeMath.sol";
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import "./FinalizableCrowdsale.sol";
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import "./utils/RefundVault.sol";
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/**
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* @title RefundableCrowdsale
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* @dev Extension of Crowdsale contract that adds a funding goal, and
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* the possibility of users getting a refund if goal is not met.
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* Uses a RefundVault as the crowdsale's vault.
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*/
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contract RefundableCrowdsale is FinalizableCrowdsale {
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using SafeMath for uint256;
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// minimum amount of funds to be raised in weis
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uint256 public goal;
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// refund vault used to hold funds while crowdsale is running
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RefundVault public vault;
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/**
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* @dev Constructor, creates RefundVault.
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* @param _goal Funding goal
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*/
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constructor(uint256 _goal) public {
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require(_goal > 0);
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vault = new RefundVault(wallet);
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goal = _goal;
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}
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/**
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* @dev Investors can claim refunds here if crowdsale is unsuccessful
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*/
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function claimRefund() public {
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require(isFinalized);
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require(!goalReached());
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vault.refund(msg.sender);
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}
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/**
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* @dev Checks whether funding goal was reached.
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* @return Whether funding goal was reached
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*/
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function goalReached() public view returns (bool) {
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return weiRaised >= goal;
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}
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/**
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* @dev vault finalization task, called when owner calls finalize()
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*/
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function finalization() internal {
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if (goalReached()) {
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vault.close();
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} else {
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vault.enableRefunds();
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}
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super.finalization();
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}
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/**
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* @dev Overrides Crowdsale fund forwarding, sending funds to vault.
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*/
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function _forwardFunds() internal {
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vault.deposit.value(msg.value)(msg.sender);
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}
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}
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