Struct HostFunctions 

pub struct HostFunctions { /* private fields */ }

Host function registry used by optimized execution paths.

• register_call: generic JSON argument callbacks.
• register_generate_i64 and register_map_i64: typed callbacks used by external fast plans to avoid JSON boxing overhead.

Implementations

impl HostFunctions

pub fn new() -> Self

Create an empty host function registry.

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

Register a generic host callback for call steps.

pub fn register_generate_i64( &mut self, name: impl Into<String>, func: HostGenerateI64Fn, )

Register typed generator callback used by external fast-path plans.

pub fn register_map_i64(&mut self, name: impl Into<String>, func: HostMapI64Fn)

Register typed mapper callback used by external fast-path plans.

Trait Implementations

impl Clone for HostFunctions

fn clone(&self) -> HostFunctions

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for HostFunctions

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

Formats the value using the given formatter.

impl Default for HostFunctions

fn default() -> HostFunctions

Returns the “default value” for a type.