Enum Attributes 

pub enum Attributes {
    U16(Vec<(u16, u16)>),
    U32(Vec<(u32, u32)>),
    U64(Vec<(u64, u64)>),
}

Per-array attribute entries as pairs of dictionary indices.

The variant determines the storage width per index. All entries are sorted by key index to allow O(log n) binary search. Arrays in the same file may use different variants; each is self-describing.

Variants

U16(Vec<(u16, u16)>)

(key_index, value_index) pairs stored as 16-bit indices.

U32(Vec<(u32, u32)>)

(key_index, value_index) pairs stored as 32-bit indices.

U64(Vec<(u64, u64)>)

(key_index, value_index) pairs stored as 64-bit indices.

Implementations

impl Attributes

pub fn empty(kind: AttrIndexKind) -> Self

Returns an empty attribute set for the given index kind.

pub fn get(&self, key_idx: usize) -> Option<usize>

Returns the value index for key_idx, or None if absent.

pub fn upsert(&mut self, key_idx: usize, val_idx: usize)

Inserts or replaces the value index for key_idx, keeping entries sorted.

pub fn iter_entries(&self) -> Box<dyn Iterator<Item = (usize, usize)> + '_>

Iterates over all (key_index, value_index) pairs as usize.

pub fn max_index(&self) -> usize

Returns the maximum index value that fits in this variant.

Trait Implementations

impl Archive for Attributes

where Vec<(u16, u16)>: Archive, Vec<(u32, u32)>: Archive, Vec<(u64, u64)>: Archive,

type Archived = ArchivedAttributes

The archived representation of this type.

type Resolver = AttributesResolver

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 Attributes

fn clone(&self) -> Attributes

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Attributes

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

Formats the value using the given formatter.

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

where Vec<(u16, u16)>: Archive, <Vec<(u16, u16)> as Archive>::Archived: Deserialize<Vec<(u16, u16)>, __D>, Vec<(u32, u32)>: Archive, <Vec<(u32, u32)> as Archive>::Archived: Deserialize<Vec<(u32, u32)>, __D>, Vec<(u64, u64)>: Archive, <Vec<(u64, u64)> as Archive>::Archived: Deserialize<Vec<(u64, u64)>, __D>,

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

Deserializes using the given deserializer

impl PartialEq for Attributes

fn eq(&self, other: &Attributes) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

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

where Vec<(u16, u16)>: Serialize<__S>, Vec<(u32, u32)>: Serialize<__S>, Vec<(u64, u64)>: 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.

impl StructuralPartialEq for Attributes