Struct ContextRegistry 

pub struct ContextRegistry { /* private fields */ }

Storage for context entries, supporting both static and dynamic providers.

ContextRegistry is cheap to clone since it stores providers as Arc.

Implementations

impl ContextRegistry

pub fn new() -> Self

Creates a new empty context registry.

pub fn add_static(&mut self, name: impl Into<String>, value: Value)

Registers a static context value.

The value will be available in templates under the given name.

pub fn add_provider<P: ContextProvider + 'static>( &mut self, name: impl Into<String>, provider: P, )

Registers a dynamic context provider.

The provider will be called at render time to produce a value.

pub fn is_empty(&self) -> bool

Returns true if the registry has no entries.

pub fn len(&self) -> usize

Returns the number of registered context entries.

pub fn resolve(&self, ctx: &RenderContext<'_>) -> HashMap<String, Value>

Resolves all context providers into values for the given render context.

Returns a map of names to values that can be merged into the template context.

pub fn names(&self) -> impl Iterator<Item = &str>

Gets the names of all registered context entries.

Trait Implementations

impl Clone for ContextRegistry

fn clone(&self) -> ContextRegistry

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ContextRegistry

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

Formats the value using the given formatter.

impl Default for ContextRegistry

fn default() -> ContextRegistry

Returns the “default value” for a type.