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Diffstat (limited to 'vendor/bytemuck/src/pod_in_option.rs')
-rw-r--r-- | vendor/bytemuck/src/pod_in_option.rs | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/vendor/bytemuck/src/pod_in_option.rs b/vendor/bytemuck/src/pod_in_option.rs new file mode 100644 index 0000000..3327e99 --- /dev/null +++ b/vendor/bytemuck/src/pod_in_option.rs @@ -0,0 +1,27 @@ +use super::*; + +// Note(Lokathor): This is the neat part!! +unsafe impl<T: PodInOption> Pod for Option<T> {} + +/// Trait for types which are [Pod](Pod) when wrapped in +/// [Option](core::option::Option). +/// +/// ## Safety +/// +/// * `Option<T>` must uphold the same invariants as [Pod](Pod). +/// * **Reminder:** pointers are **not** pod! **Do not** mix this trait with a +/// newtype over [NonNull](core::ptr::NonNull). +pub unsafe trait PodInOption: ZeroableInOption + Copy + 'static {} + +unsafe impl PodInOption for NonZeroI8 {} +unsafe impl PodInOption for NonZeroI16 {} +unsafe impl PodInOption for NonZeroI32 {} +unsafe impl PodInOption for NonZeroI64 {} +unsafe impl PodInOption for NonZeroI128 {} +unsafe impl PodInOption for NonZeroIsize {} +unsafe impl PodInOption for NonZeroU8 {} +unsafe impl PodInOption for NonZeroU16 {} +unsafe impl PodInOption for NonZeroU32 {} +unsafe impl PodInOption for NonZeroU64 {} +unsafe impl PodInOption for NonZeroU128 {} +unsafe impl PodInOption for NonZeroUsize {} |