Struct ExternalizedAnchorVariableSupply 

pub struct ExternalizedAnchorVariableSupply<E, A>
where
    E: Eq + Hash + Clone + Send + Sync + 'static,
    A: Clone + Send + Sync + 'static,
{ /* private fields */ }

Hash-based implementation of anchor variable supply.

Uses a HashMap internally for O(1) average-case lookups. Thread-safe via RwLock.

Implementations

impl<E, A> ExternalizedAnchorVariableSupply<E, A>

where E: Eq + Hash + Clone + Send + Sync + 'static, A: Clone + Send + Sync + 'static,

pub fn new(variable_name: impl Into<String>) -> Self

Creates a new externalized anchor variable supply.

pub fn variable_name(&self) -> &str

Returns the variable name this supply tracks.

pub fn cascade_anchor<I>(&self, entities: I, new_anchor: A)

where I: IntoIterator<Item = E>,

Updates anchors for all entities in a chain segment.

When an entity changes its chain position, all downstream entities in the chain need their anchor updated. This method cascades the update.

Arguments

• entities - Iterator of entities to update (in chain order)
• new_anchor - The new anchor for all entities

Trait Implementations

impl<E, A> AnchorVariableSupply<E, A> for ExternalizedAnchorVariableSupply<E, A>

where E: Eq + Hash + Clone + Send + Sync + 'static, A: Clone + Send + Sync + 'static,

fn get_anchor(&self, entity: &E) -> Option<A>

Gets the anchor for an entity.

fn set_anchor(&self, entity: E, anchor: A)

Sets the anchor for an entity.

fn remove(&self, entity: &E) -> Option<A>

Removes the anchor mapping for an entity.

fn clear(&self)

Clears all mappings.

fn len(&self) -> usize

Returns the number of tracked entities.

fn is_empty(&self) -> bool

Returns true if no entities are tracked.

impl<E, A> Debug for ExternalizedAnchorVariableSupply<E, A>

where E: Eq + Hash + Clone + Send + Sync + 'static, A: Clone + Send + Sync + 'static,

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

Formats the value using the given formatter.

impl<E, A> Supply for ExternalizedAnchorVariableSupply<E, A>

where E: Eq + Hash + Clone + Send + Sync + 'static, A: Clone + Send + Sync + 'static,

fn supply_type_id(&self) -> TypeId

Returns the type ID of this supply for registration purposes.