Initial vendor packages

Signed-off-by: Valentin Popov <valentin@popov.link>

1 files changed, 35 insertions, 0 deletions

diff --git a/vendor/bytemuck/src/zeroable_in_option.rs b/vendor/bytemuck/src/zeroable_in_option.rs
new file mode 100644
index 0000000..c4cf158
--- /dev/null
+++ b/vendor/bytemuck/src/zeroable_in_option.rs
@@ -0,0 +1,35 @@
+use super::*;
+
+// Note(Lokathor): This is the neat part!!
+unsafe impl<T: ZeroableInOption> Zeroable for Option<T> {}
+
+/// Trait for types which are [Zeroable](Zeroable) when wrapped in
+/// [Option](core::option::Option).
+///
+/// ## Safety
+///
+/// * `Option<YourType>` must uphold the same invariants as
+///   [Zeroable](Zeroable).
+pub unsafe trait ZeroableInOption: Sized {}
+
+unsafe impl ZeroableInOption for NonZeroI8 {}
+unsafe impl ZeroableInOption for NonZeroI16 {}
+unsafe impl ZeroableInOption for NonZeroI32 {}
+unsafe impl ZeroableInOption for NonZeroI64 {}
+unsafe impl ZeroableInOption for NonZeroI128 {}
+unsafe impl ZeroableInOption for NonZeroIsize {}
+unsafe impl ZeroableInOption for NonZeroU8 {}
+unsafe impl ZeroableInOption for NonZeroU16 {}
+unsafe impl ZeroableInOption for NonZeroU32 {}
+unsafe impl ZeroableInOption for NonZeroU64 {}
+unsafe impl ZeroableInOption for NonZeroU128 {}
+unsafe impl ZeroableInOption for NonZeroUsize {}
+
+// Note: this does not create NULL vtable because we get `None` anyway.
+unsafe impl<T: ?Sized> ZeroableInOption for NonNull<T> {}
+unsafe impl<T: ?Sized> ZeroableInOption for &'_ T {}
+unsafe impl<T: ?Sized> ZeroableInOption for &'_ mut T {}
+
+#[cfg(feature = "extern_crate_alloc")]
+#[cfg_attr(feature = "nightly_docs", doc(cfg(feature = "extern_crate_alloc")))]
+unsafe impl<T: ?Sized> ZeroableInOption for alloc::boxed::Box<T> {}