Struct UnitOnly

pub struct UnitOnly;

Deserializer of variant data, that supports only unit variants. Attempt to deserialize newtype will provide UnitDeserializer. Attempt to deserialize tuple or struct variant will result to call of Visitor::visit_unit.

Trait Implementations

impl<'de> VariantAccess<'de> for UnitOnly

type Error = DeError

The error type that can be returned if some error occurs during deserialization. Must match the error type of our EnumAccess.

fn unit_variant(self) -> Result<(), Self::Error>

Called when deserializing a variant with no values.

fn newtype_variant_seed<T>(self, seed: T) -> Result<T::Value, Self::Error>

where T: DeserializeSeed<'de>,

Called when deserializing a variant with a single value.

fn tuple_variant<V>( self, _len: usize, visitor: V, ) -> Result<V::Value, Self::Error>

where V: Visitor<'de>,

Called when deserializing a tuple-like variant.

fn struct_variant<V>( self, _fields: &'static [&'static str], visitor: V, ) -> Result<V::Value, Self::Error>

where V: Visitor<'de>,

Called when deserializing a struct-like variant.

fn newtype_variant<T>(self) -> Result<T, Self::Error>

where T: Deserialize<'de>,

Called when deserializing a variant with a single value.