Struct Union 

pub struct Union { /* private fields */ }

A raw FIDL union

Implementations

impl Union

pub fn encode_absent(out: &mut MaybeUninit<Self>)

Encodes that a union is absent in a slot.

pub fn encode_as_static<E: InternalHandleEncoder + ?Sized, W: Wire>( value: impl Encode<W, E>, ord: u64, encoder: &mut E, out: &mut MaybeUninit<Self>, constraint: W::Constraint, ) -> Result<(), EncodeError>

Encodes a 'static value and ordinal in a slot.

pub fn encode_as<E: Encoder + ?Sized, W: Wire>( value: impl Encode<W, E>, ord: u64, encoder: &mut E, out: &mut MaybeUninit<Self>, constraint: W::Constraint, ) -> Result<(), EncodeError>

Encodes a value and ordinal in a slot.

pub fn encoded_ordinal(slot: Slot<'_, Self>) -> u64

Returns the ordinal of the encoded value.

pub fn decode_absent(slot: Slot<'_, Self>) -> Result<(), DecodeError>

Decodes an absent union from a slot.

pub fn decode_unknown_static<D: InternalHandleDecoder + ?Sized>( slot: Slot<'_, Self>, decoder: &mut D, ) -> Result<(), DecodeError>

Decodes an unknown 'static value from a union.

The handles owned by the unknown value are discarded.

pub fn decode_unknown<'de, D: Decoder<'de> + ?Sized>( slot: Slot<'_, Self>, decoder: &mut D, ) -> Result<(), DecodeError>

Decodes an unknown value from a union.

The handles owned by the unknown value are discarded.

pub fn decode_as_static<D: InternalHandleDecoder + ?Sized, T: Decode<D>>( slot: Slot<'_, Self>, decoder: &mut D, constraint: T::Constraint, ) -> Result<(), DecodeError>

Decodes the typed 'static value in a union.

pub fn decode_as<'de, D: Decoder<'de> + ?Sized, T: Decode<D>>( slot: Slot<'_, Self>, decoder: &mut D, constraint: T::Constraint, ) -> Result<(), DecodeError>

Decodes the typed value in a union.

pub fn absent() -> Self

The absent optional union.

pub fn is_some(&self) -> bool

Returns whether the union contains a value.

pub fn is_none(&self) -> bool

Returns whether the union is empty.

pub fn ordinal(&self) -> u64

Returns the ordinal of the union.

pub fn get(&self) -> &Envelope

Gets a reference to the envelope underlying the union.

pub unsafe fn clone_inline_unchecked<T: Clone>(&self) -> Self

Clones the union, assuming that it contains an inline T.

Safety

The union must have been successfully decoded inline as a T.

Trait Implementations

impl Constrained for Union

type Constraint = ()

Type of constraint information for this type.

fn validate( _: Slot<'_, Self>, _: Self::Constraint, ) -> Result<(), ValidationError>

Validate a slot of this type against a constraint. Can be called when pointers/envelopes are just presence markers.

impl Wire for Union

type Narrowed<'de> = Union

The narrowed wire type, restricted to the 'de lifetime.

fn zero_padding(_: &mut MaybeUninit<Self>)

Writes zeroes to the padding for this type, if any.