Struct Shape 

pub struct Shape {
    pub id: ShapeId,
    pub properties: Vec<u32>,
    pub parent: Option<ShapeId>,
    pub property_count: u16,
}

A shape describes the ordered property layout of a HashMap.

Properties are identified by u32 “string IDs” (hashed property names). The index of a property in the properties vec is its slot index for direct access.

Fields

id: ShapeId

properties: Vec<u32>

Ordered property names (as string IDs/hashes).

parent: Option<ShapeId>

Parent shape in the transition chain (None for root).

property_count: u16

Number of properties (== properties.len(), cached for speed).

Trait Implementations

impl Clone for Shape

fn clone(&self) -> Shape

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.