Trait Castable 

pub unsafe trait Castable { }

Marker trait for castable data.

This trait is important to maintain the defined integrity of casting against buffers of bytes. There are lots of opportunity for undefined behavior to happen. By implementing an object as Castable, you are declaring the following:

• The type is inhabited (e.g., no Infallible).
• The type allows any bit pattern (e.g., no bool or char).
• The type does not contain any padding bytes.
• The type’s members are also Castable.
• The type is #[repr(C)], #[repr(transparent)], #[repr(packed)] or #[repr(align)].
• The type must not use generics.

If you’ve used the bytemuck library, these rules will probably seem familiar. You can automatically guarantee these traits of your data with the Castable derive macro.

Implementations on Foreign Types

impl Castable for f32

impl Castable for f64

impl Castable for i8

impl Castable for i16

impl Castable for i32

impl Castable for i64

impl Castable for i128

impl Castable for isize

impl Castable for u8

impl Castable for u16

impl Castable for u32

impl Castable for u64

impl Castable for u128

impl Castable for ()

impl Castable for usize

impl Castable for __m128

Available on x86 only.

impl Castable for __m128d

Available on x86 only.

impl Castable for __m128i

Available on x86 only.

impl Castable for __m256

Available on x86 only.

impl Castable for __m256d

Available on x86 only.

impl Castable for __m256i

Available on x86 only.

impl Castable for PhantomPinned

impl<T, const N: usize> Castable for [T; N]

where T: Castable,

impl<T: Castable> Castable for PhantomData<T>

impl<T: Castable> Castable for ManuallyDrop<T>

impl<T: Castable> Castable for Wrapping<T>

Implementors