Struct Shape 

pub struct Shape {
    pub elem_words: usize,
    pub assoc: bool,
    pub key: KeyKind,
    pub obj: bool,
    pub nested: Nested,
}

What an operation works on: element size, and for an associative array, its key type.

Fields

elem_words: usize

assoc: bool

key: KeyKind

obj: bool

The elements are class handles (word 0 of each): the collection owns a reference on each object (see [Held]).

nested: Nested

Class handles inside each element that is not itself a handle (a struct or fixed array of handles): the collection owns a reference on each, exactly as for obj (Nested).

Implementations

impl Shape

pub fn discard(&self, val: &[u64])

Gives up the reference an operation that did not store val was handed on its element (the operation was a no-op: an out-of-range write, an invalid key).

pub fn key_from_bits(&self, bits: &[u64]) -> Option<Key>

The words of a packed key value ((unk << width) | val): None if any bit is unknown (such a key is invalid, §7.8.6).

pub fn key_to_bits(&self, key: &Key, out: &mut [u64])

key as packed bits into out (a string key as its interned id).

Trait Implementations

impl Clone for Shape

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Shape

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

Formats the value using the given formatter.