Struct EntityArray 

pub struct EntityArray {
    pub ids: Vec<u64>,
    pub xs: Vec<f32>,
    pub ys: Vec<f32>,
    pub widths: Vec<f32>,
    pub heights: Vec<f32>,
    pub z_indices: Vec<u16>,
    pub styles: Vec<Style>,
    pub state_tags: Vec<u8>,
    pub content_hashes: Vec<u64>,
    pub content_offsets: Vec<u32>,
    pub contents: Vec<u8>,
}

Structure-of-arrays layout — cache-contiguous, SIMD-friendly.

Each entity carries a state_tag for delta compression: STATIC(0) — unchanged since client’s last ack MOVED(1) — position/viewport only CHANGED(2) — content or style changed REMOVED(3) — no longer present

content_hashes[i] = XXH3-64 of the content blob for dedup. Clients cache blobs by hash and only fetch new ones on CHANGED entities.

Fields

ids: Vec<u64>

xs: Vec<f32>

ys: Vec<f32>

widths: Vec<f32>

heights: Vec<f32>

z_indices: Vec<u16>

styles: Vec<Style>

state_tags: Vec<u8>

content_hashes: Vec<u64>

content_offsets: Vec<u32>

contents: Vec<u8>

Implementations

impl EntityArray

pub fn len(&self) -> usize

pub fn is_empty(&self) -> bool

pub fn clear(&mut self)

pub fn shrink_to_fit(&mut self)

pub fn push( &mut self, id: u64, x: f32, y: f32, w: f32, h: f32, z: u16, style: Style, content: &[u8], )

pub fn diff_since(&self, prev: &EntityArray) -> ChangedEntities

Produce delta between self and an older frame. Returns only entities that differ: STATIC entries are omitted entirely.

pub fn content_slice(&self, idx: usize) -> &[u8]

pub fn unpack_entity( &self, idx: usize, ) -> (&[u8], &[u8], &[u8], &[u8], &[u8], &[u8])

Unpack a single entity’s content from packed format. Returns (tag, classes, id, href, role, text) — all slices borrowing from self.contents. Packed format: \0tag\0[classes]\0[id]\0[href]\0[role]\0text

impl EntityArray

pub fn with_capacity(n: usize) -> Self

pub fn hydration_json(&self) -> String

Build a JSON string for the ECS-to-JS hydration bridge. Output flat array with parentId for reconstructing the DOM tree in QuickJS.

Trait Implementations

impl Clone for EntityArray

fn clone(&self) -> EntityArray

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for EntityArray

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

Formats the value using the given formatter.

impl Default for EntityArray

fn default() -> Self

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for EntityArray

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for EntityArray

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.