Enum PageSlot 

pub enum PageSlot {
    Empty,
    Loaded(PageRef),
    Missing(CapHash),
}

Sparse representation of a paged DataCap’s pages. Empty is the canonical zero page; Loaded holds a refcounted byte slab; Missing records the page’s content hash so a host callback can later resolve it (V1: never observed — we always pre-publish).

Variants

Empty

Loaded(PageRef)

Missing(CapHash)

Trait Implementations

impl Archive for PageSlot

where PageRef: Archive, CapHash: Archive,

type Archived = ArchivedPageSlot

The archived representation of this type.

type Resolver = PageSlotResolver

The resolver for this type. It must contain all the additional information from serializing needed to make the archived type from the normal type.

fn resolve( &self, resolver: <Self as Archive>::Resolver, out: Place<<Self as Archive>::Archived>, )

Creates the archived version of this value at the given position and writes it to the given output.

const COPY_OPTIMIZATION: CopyOptimization<Self> = _

An optimization flag that allows the bytes of this type to be copied directly to a writer instead of calling serialize.

impl Clone for PageSlot

fn clone(&self) -> PageSlot

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for PageSlot

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

Formats the value using the given formatter.

impl<__D: Fallible + ?Sized> Deserialize<PageSlot, __D> for Archived<PageSlot>

where PageRef: Archive, <PageRef as Archive>::Archived: Deserialize<PageRef, __D>, CapHash: Archive, <CapHash as Archive>::Archived: Deserialize<CapHash, __D>,

fn deserialize( &self, deserializer: &mut __D, ) -> Result<PageSlot, <__D as Fallible>::Error>

Deserializes using the given deserializer

impl Encode for PageSlot

fn is_ssz_fixed_len() -> bool

true iff this type is fixed-length (no variable-length fields).

fn ssz_fixed_len() -> usize

Number of bytes this type occupies in the fixed-length portion of a container encoding. For variable-length types this returns [BYTES_PER_LENGTH_OFFSET] (i.e. the size of the offset slot).

fn ssz_bytes_len(&self) -> usize

Total size of self when serialized.

fn ssz_append(&self, buf: &mut Vec<u8>)

Append the encoding of self to buf.

fn is_basic_type() -> bool

true for “basic” SSZ types (uintN, bool), which pack adjacent elements into shared 32-byte chunks for merkleization. Composite types (containers, lists, structs) return false (the default).

fn as_ssz_bytes(&self) -> Vec<u8>

Serialize into a fresh Vec<u8> allocated through the global allocator.

impl HashTreeRoot for PageSlot

fn hash_tree_root<D: Digest<OutputSize = U32>>(&self) -> [u8; 32]

Compute the hash tree root using D as the underlying hash.

impl<__S: Fallible + ?Sized> Serialize<__S> for PageSlot

where PageRef: Serialize<__S>, CapHash: Serialize<__S>,

fn serialize( &self, serializer: &mut __S, ) -> Result<<Self as Archive>::Resolver, <__S as Fallible>::Error>

Writes the dependencies for the object and returns a resolver that can create the archived type.