Struct ContextRegistry 

pub struct ContextRegistry { /* private fields */ }

The extension-side concrete representation of a Context.

This can be considered the actual context instance, while Context serves as an abstract handle or outer wrapper around it.

Can only be constructed through [CurrentContext::with_context_initializer].

Implementations

impl ContextRegistry

pub fn context_type(&self) -> Option<UCStr>

Returns the context type associated with the context.

This corresponds to the contextType argument passed to ExtensionContext.createExtensionContext.

Returns None if that argument was null.

pub fn context_data(&self) -> Option<&dyn Any>

Returns an immutable reference to the Context Data associated with the context.

Context Data is user-defined data bound to the context, sharing the same lifetime as the context itself.

It can only be set via the first return value of ContextInitializer.

pub fn context_data_mut(&mut self) -> Option<&mut dyn Any>

Returns a mutable reference to the Context Data associated with the context.

Context Data is user-defined data bound to the context, sharing the same lifetime as the context itself.

It can only be set via the first return value of ContextInitializer.

pub fn with_extension_data<F, R>(&self, f: F) -> Option<R>

where F: FnOnce(&mut dyn Any) -> R,

Provides access to the Extension Data.

The Extension Data is set from the return value of Initializer. It can be accessed across threads and is synchronized via a Mutex, providing exclusive access on each call.

Calling this method within nested Function invocations can lead to deadlocks. It is recommended to avoid accessing it within a Function call stack, and instead perform synchronization between Context Data and Extension Data in ContextInitializer and ContextFinalizer.

Trait Implementations

impl Debug for ContextRegistry

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

Formats the value using the given formatter.