Enum rkyv::rc::ArchivedRcWeak

#[repr(u8)]
pub enum ArchivedRcWeak<T: ArchivePointee + ?Sized, F> {
    None,
    Some(ArchivedRc<T, F>),
}

An archived rc::Weak.

This is essentially just an optional ArchivedRc.

Variants

None

A null weak pointer

Some(ArchivedRc<T, F>)

A weak pointer to some shared pointer

Implementations

impl<T: ArchivePointee + ?Sized, F> ArchivedRcWeak<T, F>

pub fn upgrade(&self) -> Option<&ArchivedRc<T, F>>

Attempts to upgrade the weak pointer to an ArchivedArc.

Returns None if a null weak pointer was serialized.

pub fn upgrade_pin_mut( self: Pin<&mut Self> ) -> Option<Pin<&mut ArchivedRc<T, F>>>

Attempts to upgrade a pinned mutable weak pointer.

pub unsafe fn resolve_from_ref<U: ArchiveUnsized<Archived = T> + ?Sized>( value: Option<&U>, pos: usize, resolver: RcWeakResolver<MetadataResolver<U>>, out: *mut Self )

Resolves an archived Weak from a given optional reference.

Safety

• pos must be the position of out within the archive
• resolver must be the result of serializing value

pub fn serialize_from_ref<U, S>( value: Option<&U>, serializer: &mut S ) -> Result<RcWeakResolver<MetadataResolver<U>>, S::Error>where U: SerializeUnsized<S, Archived = T> + ?Sized, S: Serializer + SharedSerializeRegistry + ?Sized,

Serializes an archived Weak from a given optional reference.

Trait Implementations

impl<T, F, C> CheckBytes<C> for ArchivedRcWeak<T, F>where T: ArchivePointee + CheckBytes<C> + LayoutRaw + Pointee + ?Sized + 'static, C: ArchiveContext + SharedContext + ?Sized, T::ArchivedMetadata: CheckBytes<C>, C::Error: Error, F: 'static,

type Error = WeakPointerError<<<T as ArchivePointee>::ArchivedMetadata as CheckBytes<C>>::Error, <T as CheckBytes<C>>::Error, <C as Fallible>::Error>

The error that may result from checking the type.

unsafe fn check_bytes<'a>( value: *const Self, context: &mut C ) -> Result<&'a Self, Self::Error>

Checks whether the given pointer points to a valid value within the given context.

impl<T: ArchivePointee + Debug + ?Sized, F> Debug for ArchivedRcWeak<T, F>

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<T, D> Deserialize<Weak<T>, D> for ArchivedRcWeak<T::Archived, ArcFlavor>where T: Archive + 'static, T::Archived: DeserializeUnsized<T, D>, D: SharedDeserializeRegistry + ?Sized,

fn deserialize(&self, deserializer: &mut D) -> Result<Weak<T>, D::Error>

Deserializes using the given deserializer

impl<T, D> Deserialize<Weak<T>, D> for ArchivedRcWeak<T::Archived, RcFlavor>where T: Archive + 'static, T::Archived: DeserializeUnsized<T, D>, D: SharedDeserializeRegistry + ?Sized,

fn deserialize(&self, deserializer: &mut D) -> Result<Weak<T>, D::Error>

Deserializes using the given deserializer