Struct HostRegistry 

pub struct HostRegistry { /* private fields */ }

Host function registry.

Implementations

impl HostRegistry

pub fn new() -> Self

Create a new empty registry.

pub fn register<S, F>(&mut self, name: S, f: F)

where S: Into<String>, F: Fn(&[Value], &ExecutionContext) -> Result<Value> + Send + Sync + 'static,

Register a global host function.

pub fn register_module<M, N, F>(&mut self, module: M, name: N, f: F)

where M: Into<String>, N: Into<String>, F: Fn(&[Value], &ExecutionContext) -> Result<Value> + Send + Sync + 'static,

Register a host function in a module namespace.

pub fn get(&self, name: &str) -> Option<&HostFn>

Look up a global function.

pub fn get_module(&self, module: &str, name: &str) -> Option<&HostFn>

Look up a module function.

pub fn function_names(&self) -> impl Iterator<Item = &String>

Get all registered function names.

pub fn module_names(&self) -> impl Iterator<Item = &String>

Get all registered module names.

pub fn merge(&mut self, other: HostRegistry)

Merge another registry into this one.

Trait Implementations

impl Clone for HostRegistry

fn clone(&self) -> HostRegistry

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for HostRegistry

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

Formats the value using the given formatter.

impl Default for HostRegistry

fn default() -> HostRegistry

Returns the “default value” for a type.