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openzeppelin-contracts/contracts/crowdsale/emission/MintedCrowdsale.sol

21 lines
749 B

pragma solidity ^0.5.0;
import "../Crowdsale.sol";
import "../../token/ERC20/ERC20Mintable.sol";
/**
* @title MintedCrowdsale
* @dev Extension of Crowdsale contract whose tokens are minted in each purchase.
* Token ownership should be transferred to MintedCrowdsale for minting.
*/
contract MintedCrowdsale is Crowdsale {
/**
* @dev Overrides delivery by minting tokens upon purchase.
* @param beneficiary Token purchaser
* @param tokenAmount Number of tokens to be minted
*/
function _deliverTokens(address beneficiary, uint256 tokenAmount) internal {
// Potentially dangerous assumption about the type of the token.
require(ERC20Mintable(address(token())).mint(beneficiary, tokenAmount));
}
}