Struct UnionField 

pub struct UnionField { /* private fields */ }

Info about a field on a union Type. Separate from a normal Field due to the unsafety of accessing/setting union fields. Allows getting a reference to or setting the content of this field on a Value, assuming the reflection was configured to allow it.

Implementations

impl UnionField

pub unsafe fn new( get_ptr: Option<for<'a, 'b> fn(&'a Value<'b>) -> Value<'a>>, set_ptr: Option<fn(&mut Value<'_>, Value<'static>)>, name: &'static str, assoc_ty: Type, field_ty: Type, ) -> UnionField

Internal Function, used to create a new union field

Safety

Should only be called within a ReflectedUnion’s fields implementation

pub fn name(&self) -> &'static str

Get the name of this field

pub fn assoc_ty(&self) -> Type

Get the Type this field is defined on

pub fn ty(&self) -> Type

Get the Type of the data in this field

pub unsafe fn get_ref<'a>( &self, this: &'a Value<'a>, ) -> Result<Value<'a>, Error>

Get a reference to the data contained within this field on a Value, assuming the Value is of the correct type and the operation is supported.

Safety

This is unsafe for the same reason accessing a field on a union normally is, and assumes that the union content can be correctly interpreted as a value of this type.

pub unsafe fn set( &self, this: &mut Value<'_>, other: Value<'static>, ) -> Result<(), Error>

Set the data contained within this Field on a Value, assuming the Values of both this and other are of the correct type and the operation is supported.

Safety

This is unsafe for the same reason setting a non-Copy field on a union normally is, reading the field may require the union content be read as a value of the type being set.