48 lines
979 B
Solidity
48 lines
979 B
Solidity
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pragma solidity >=0.6.3;
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// Author: Louis Holbrook <dev@holbrook.no> 0826EDA1702D1E87C6E2875121D2E7BB88C2A746
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// SPDX-License-Identifier: AGPL-3.0-or-later
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contract ExpireTest {
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uint256 public expires;
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bool expired;
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event Expired(uint256 _timestamp);
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event ExpiryChange(uint256 indexed _oldTimestamp, uint256 _newTimestamp);
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constructor(uint256 _timestamp) {
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expires = _timestamp;
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}
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function setExpire(uint256 _timestamp) public {
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require(!expired);
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require(_timestamp > expires);
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emit ExpiryChange(expires, _timestamp);
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expires = _timestamp;
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}
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function applyExpiry() public returns(uint8) {
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if (expired) {
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return 1;
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}
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if (block.timestamp < expires) {
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return 0;
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}
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expired = true;
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emit Expired(block.timestamp);
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return 1;
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}
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function supportsInterface(bytes4 _sum) public pure returns (bool) {
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if (_sum == 0x01ffc9a7) { // EIP165
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return true;
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}
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if (_sum == 0x841a0e94) { // Expire
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return true;
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}
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return false;
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}
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}
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