laconicd/tests-solidity/suites/initializable/contracts/Petrifiable.sol
Brett Sun c9639c3860
tests: add solidity test suites (#487)
* tests: add solidity test suite

* tests: remove require strings

* Update tests-solidity/init-test-node.sh

* Update tests-solidity/init-test-node.sh

Co-authored-by: Federico Kunze <31522760+fedekunze@users.noreply.github.com>
2020-09-01 17:16:28 -04:00

22 lines
633 B
Solidity

pragma solidity ^0.4.24;
import "./Initializable.sol";
contract Petrifiable is Initializable {
// Use block UINT256_MAX (which should be never) as the initializable date
uint256 internal constant PETRIFIED_BLOCK = uint256(-1);
function isPetrified() public view returns (bool) {
return getInitializationBlock() == PETRIFIED_BLOCK;
}
/**
* @dev Function to be called by top level contract to prevent being initialized.
* Useful for freezing base contracts when they're used behind proxies.
*/
function petrify() internal onlyInit {
initializedAt(PETRIFIED_BLOCK);
}
}