Struct LuaUserData 

pub struct LuaUserData {
    pub data: Box<[u8]>,
    pub uv: RefCell<Vec<LuaValue>>,
    pub metatable: RefCell<Option<GcRef<LuaTable>>>,
    pub host_value: RefCell<Option<Rc<dyn Any>>>,
}

Fields

data: Box<[u8]>

uv: RefCell<Vec<LuaValue>>

metatable: RefCell<Option<GcRef<LuaTable>>>

host_value: RefCell<Option<Rc<dyn Any>>>

Implementations

impl LuaUserData

pub fn placeholder() -> LuaUserData

pub fn metatable(&self) -> Option<GcRef<LuaTable>>

pub fn set_metatable(&self, mt: Option<GcRef<LuaTable>>)

pub fn host_value(&self) -> Option<Rc<dyn Any>>

pub fn set_host_value(&self, value: Option<Rc<dyn Any>>)

pub fn buffer_bytes(&self) -> usize

Bytes owned outside the GcBox header/object allocation.

C stores full-userdata payload and user values inline in the userdata allocation. The Rust port owns them through Box<[u8]> and Vec, so the VM charges them explicitly against the GC heap.

Trait Implementations

impl Debug for LuaUserData

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

Formats the value using the given formatter.

impl Trace for LuaUserData

LuaUserData — boxed payload + optional metatable + user values.

fn trace(&self, m: &mut Marker)