Struct FunctionRegistry 

pub struct FunctionRegistry { /* private fields */ }

Implementations

impl FunctionRegistry

pub fn new() -> Self

pub fn register<F>(&mut self, name: impl Into<String>, func: F)

where F: FilterFunction + 'static,

Register a function and assign it a unique ID if not already present.

pub fn register_fn<F>(&mut self, name: impl Into<String>, func: F)

where F: Fn(&[LiteralValue]) -> Option<LiteralValue> + Send + Sync + 'static,

Register a closure as a filter function.

pub fn function_id(&self, name: &str) -> Option<usize>

Get the function ID for a given function name, if it exists.

pub fn function_name(&self, id: usize) -> Option<&str>

Get the function name for a given function ID, if it exists.

pub fn num_functions(&self) -> usize

Get the total number of functions.

pub fn get(&self, name: &str) -> Option<&Arc<dyn FilterFunction>>

pub fn get_by_id(&self, id: usize) -> Option<&Arc<dyn FilterFunction>>

Get a function by ID.

Trait Implementations

impl Clone for FunctionRegistry

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Default for FunctionRegistry

fn default() -> FunctionRegistry

Returns the “default value” for a type.