Struct MapValue 

pub struct MapValue(/* private fields */);

Borrowed value passed to structural map and mutation callbacks. A borrowed value shared by structural visit and map callbacks.

This type centralizes the audited unsafe operations used to cast FFI values and borrow object nodes. The public APIs expose it as VisitValue or MapValue according to the callback context.

Implementations

impl StructuralValue

pub fn to_owned(&self) -> Any

Copy this borrowed value into an owning Any.

pub fn cast<R: AnyCompatible>(&self) -> Option<R>

Convert the value into an owned typed handle.

pub fn type_index(&self) -> i32

Runtime type index stored in this value.

pub fn as_node<N: ObjectCore>(&self) -> Option<&N>

Borrow the value as node type N if it is an instance of that type.