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fix(time-utils): add missing license (#10497)

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Niklas Adolfsson 2019-03-20 16:01:38 +01:00 committed by Hernando Castano
parent 037fd1b309
commit 9519493e32
1 changed files with 18 additions and 2 deletions
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20
util/time-utils/src/lib.rs
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@ -1,9 +1,25 @@
// Copyright 2015-2019 Parity Technologies (UK) Ltd.
// This file is part of Parity Ethereum.
// Parity Ethereum is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
// Parity Ethereum is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
// You should have received a copy of the GNU General Public License
// along with Parity Ethereum. If not, see <http://www.gnu.org/licenses/>.
use std::time::{Duration, SystemTime, UNIX_EPOCH};
/// Temporary trait for `checked operations` on SystemTime until these are available in standard library
/// Temporary trait for `checked operations` on SystemTime until these are available in the standard library
pub trait CheckedSystemTime {
/// Returns `Some<SystemTime>` when the result less or equal to `i32::max_value` to prevent `SystemTime` to panic because
/// it is platform specific, possible representations are i32, i64, u64 and Duration. `None` otherwise
/// it is platform specific, possible representations are i32, i64, u64 or Duration. `None` otherwise
fn checked_add(self, _d: Duration) -> Option<SystemTime>;
/// Returns `Some<SystemTime>` when the result is successful and `None` when it is not
fn checked_sub(self, _d: Duration) -> Option<SystemTime>;