22 lines
837 B
Solidity
22 lines
837 B
Solidity
pragma solidity ^0.5.0;
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import "../Crowdsale.sol";
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import "../../lifecycle/Pausable.sol";
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/**
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* @title PausableCrowdsale
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* @dev Extension of Crowdsale contract where purchases can be paused and unpaused by the pauser role.
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*/
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contract PausableCrowdsale is Crowdsale, Pausable {
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/**
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* @dev Validation of an incoming purchase. Use require statements to revert state when conditions are not met.
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* Use super to concatenate validations.
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* Adds the validation that the crowdsale must not be paused.
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* @param _beneficiary Address performing the token purchase
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* @param _weiAmount Value in wei involved in the purchase
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*/
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function _preValidatePurchase(address _beneficiary, uint256 _weiAmount) internal view whenNotPaused {
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return super._preValidatePurchase(_beneficiary, _weiAmount);
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}
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}
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