Struct AlignAs
#[repr(C)]
pub struct AlignAs<B: ?Sized, T> { pub _align: [T; 0], pub bytes: B }A hack to align a smaller type B with a bigger type T.
The usual use of this is with B = [u8] and T = u32. That is,
it permits aligning a sequence of bytes on a 4-byte boundary. This
is useful in contexts where one wants to embed a serialized dense
DFA into a Rust a program while guaranteeing the
alignment required for the DFA.
See dense::DFA::from_bytes for an
example of how to use this type.
Fields
_align: [T; 0]A zero-sized field indicating the alignment we want.
bytes: BA possibly non-sized field containing a sequence of bytes.
Trait Implementations
impl<B: Debug + ?Sized, T: Debug> Debug for AlignAs<B, T>
fn fmt(&self, f: &mut Formatter<'_>) -> Result
Auto Trait Implementations
impl<B, T> Freeze for AlignAs<B, T>
where
[T; 0]: Freeze,
B: Freeze + ?Sized,
impl<B, T> RefUnwindSafe for AlignAs<B, T>
where
[T; 0]: RefUnwindSafe,
B: RefUnwindSafe + ?Sized,
impl<B, T> Send for AlignAs<B, T>
where
[T; 0]: Send,
B: Send + ?Sized,
impl<B, T> Sync for AlignAs<B, T>
where
[T; 0]: Sync,
B: Sync + ?Sized,
impl<B, T> Unpin for AlignAs<B, T>
where
[T; 0]: Unpin,
B: Unpin + ?Sized,
impl<B, T> UnsafeUnpin for AlignAs<B, T>
where
[T; 0]: UnsafeUnpin,
B: UnsafeUnpin + ?Sized,
impl<B, T> UnwindSafe for AlignAs<B, T>
where
[T; 0]: UnwindSafe,
B: UnwindSafe + ?Sized,
Blanket Implementations
impl<T> Any for AlignAs<B, T>
where
T: 'static + ?Sized,
fn type_id(&self) -> TypeId
impl<T> Borrow<T> for AlignAs<B, T>
where
T: ?Sized,
fn borrow(&self) -> &T
impl<T> BorrowMut<T> for AlignAs<B, T>
where
T: ?Sized,
fn borrow_mut(&mut self) -> &mut T
impl<T> From<T> for AlignAs<B, T>
fn from(t: T) -> TReturns the argument unchanged.
impl<T, U> Into<U> for AlignAs<B, T>
where
U: From<T>,
fn into(self) -> UCalls
U::from(self).That is, this conversion is whatever the implementation of
[From]<T> for Uchooses to do.
impl<T, U> TryFrom<U> for AlignAs<B, T>
where
U: Into<T>,
type Error = never;fn try_from(value: U) -> Result<T, never>
impl<T, U> TryInto<U> for AlignAs<B, T>
where
U: TryFrom<T>,
type Error = <U as TryFrom<T>>::Error;fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>