Struct ComponentDefinitionAccess 

pub struct ComponentDefinitionAccess<CD>
where
    CD: ComponentDefinition + 'static,
{ /* private fields */ }

Gives access to the component definition within a future/async function

This is only guaranteed to be correct when accessed as part of the future’s poll function.

In particular, under no circumstances should you ever send this anywhere else (e.g. on a channel, or as part of spawned off closure). The only reason this is marked as Send is so the futures it produces can be sent with their parent component.

This also means you may not hold references to fields within the component across await points. You must either drop them manually before calling await, or simply use a sub-scope and let them go out of scope first. It is then safe to reacquire them following the await.

If the future is not being used as a blocking variant, no assumptions about the state of the component should be made after the await point and everthing previously established must be re-verified on the new references if it could at all have changed between two poll invocations.

Trait Implementations

impl<CD> Deref for ComponentDefinitionAccess<CD>

where CD: ComponentDefinition + 'static,

type Target = CD

The resulting type after dereferencing.

fn deref(&self) -> &<ComponentDefinitionAccess<CD> as Deref>::Target

Dereferences the value.

impl<CD> DerefMut for ComponentDefinitionAccess<CD>

where CD: ComponentDefinition + 'static,

fn deref_mut(&mut self) -> &mut <ComponentDefinitionAccess<CD> as Deref>::Target

Mutably dereferences the value.

impl<CD> Send for ComponentDefinitionAccess<CD>

where CD: ComponentDefinition + 'static,