Struct NullHooks 

pub struct NullHooks;

Zero-cost default impl. Used by the resolver when no hook has been registered. Public so consumers writing tests can opt into “explicitly no hooks” without inventing a noop type.

Trait Implementations

impl Clone for NullHooks

fn clone(&self) -> NullHooks

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for NullHooks

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

Formats the value using the given formatter.

impl Default for NullHooks

fn default() -> NullHooks

Returns the “default value” for a type.

impl ResolverHooks for NullHooks

fn on_progress<'life0, 'async_trait>( &'life0 self, _event: ProgressEvent, ) -> Pin<Box<dyn Future<Output = ()> + Send + 'async_trait>>

where Self: 'async_trait, 'life0: 'async_trait,

Generic progress notification.

fn on_cache_hit<'life0, 'async_trait>( &'life0 self, _event: CacheHitEvent, ) -> Pin<Box<dyn Future<Output = ()> + Send + 'async_trait>>

where Self: 'async_trait, 'life0: 'async_trait,

Cache hit at any tier.

fn on_cache_miss<'life0, 'async_trait>( &'life0 self, _event: CacheMissEvent, ) -> Pin<Box<dyn Future<Output = ()> + Send + 'async_trait>>

where Self: 'async_trait, 'life0: 'async_trait,

Cache miss at every tier (or expired entry forcing re-fetch).

fn on_error<'life0, 'async_trait>( &'life0 self, _event: ErrorEvent, ) -> Pin<Box<dyn Future<Output = ()> + Send + 'async_trait>>

where Self: 'async_trait, 'life0: 'async_trait,

Provider or transform error. Note: hook fires per-source for NamedMap shapes even though only the first error bubbles up to the caller as the user-facing ChartError.

impl Copy for NullHooks