Struct Extras 

pub struct Extras(pub Arc<dyn Any + Send + Sync>);

Free-form payload slot on a Node (TODO item 8). Wraps an Arc<dyn Any + Send + Sync> so embedders can attach handler types, parser state, or anything else without forcing veks-completion to grow generic parameters or hard dependencies.

Recover the payload via Arc::downcast on the inner Arc.

Tuple Fields

0: Arc<dyn Any + Send + Sync>

Implementations

impl Extras

pub fn new<T: Any + Send + Sync + 'static>(value: T) -> Self

Wrap any Send + Sync + 'static value as an extras payload.

pub fn downcast<T: Any + Send + Sync + 'static>(&self) -> Option<&T>

Try to downcast to a concrete type. Returns None if the payload was attached as a different type.

Trait Implementations

impl Clone for Extras

fn clone(&self) -> Extras

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Extras

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

Formats the value using the given formatter.