Struct ExternalRootSet 

pub struct ExternalRootSet { /* private fields */ }

Values held alive by external Rust handles.

This is the embedding API’s GC anchor. It intentionally lives directly on GlobalState instead of inside the Lua registry table: handle drop/unroot must be cheap, infallible, and independent of the Lua stack protocol.

Implementations

impl ExternalRootSet

pub fn insert(&mut self, value: LuaValue) -> ExternalRootKey

pub fn get(&self, key: ExternalRootKey) -> Option<&LuaValue>

pub fn replace( &mut self, key: ExternalRootKey, value: LuaValue, ) -> Option<LuaValue>

pub fn remove(&mut self, key: ExternalRootKey) -> Option<LuaValue>

pub fn iter_values(&self) -> impl Iterator<Item = &LuaValue>

pub fn len(&self) -> usize

pub fn is_empty(&self) -> bool

pub fn vacant_len(&self) -> usize

Trait Implementations

impl Debug for ExternalRootSet

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

Formats the value using the given formatter.

impl Default for ExternalRootSet

fn default() -> ExternalRootSet

Returns the “default value” for a type.