diff options
Diffstat (limited to 'vendor/parking_lot_core-0.8.6/src/util.rs')
-rw-r--r-- | vendor/parking_lot_core-0.8.6/src/util.rs | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/vendor/parking_lot_core-0.8.6/src/util.rs b/vendor/parking_lot_core-0.8.6/src/util.rs new file mode 100644 index 000000000..d7aaa8715 --- /dev/null +++ b/vendor/parking_lot_core-0.8.6/src/util.rs @@ -0,0 +1,31 @@ +// Copyright 2016 Amanieu d'Antras +// +// Licensed under the Apache License, Version 2.0, <LICENSE-APACHE or +// http://apache.org/licenses/LICENSE-2.0> or the MIT license <LICENSE-MIT or +// http://opensource.org/licenses/MIT>, at your option. This file may not be +// copied, modified, or distributed except according to those terms. + +// Option::unchecked_unwrap +pub trait UncheckedOptionExt<T> { + unsafe fn unchecked_unwrap(self) -> T; +} + +impl<T> UncheckedOptionExt<T> for Option<T> { + #[inline] + unsafe fn unchecked_unwrap(self) -> T { + match self { + Some(x) => x, + None => unreachable(), + } + } +} + +// hint::unreachable_unchecked() in release mode +#[inline] +unsafe fn unreachable() -> ! { + if cfg!(debug_assertions) { + unreachable!(); + } else { + core::hint::unreachable_unchecked() + } +} |