Trait serde::de::VariantVisitor
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[src]
pub trait VariantVisitor { type Error: Error; fn visit_variant<V>(&mut self) -> Result<V, Self::Error> where V: Deserialize; fn visit_unit(&mut self) -> Result<(), Self::Error> { ... } fn visit_newtype<T>(&mut self) -> Result<T, Self::Error> where T: Deserialize { ... } fn visit_tuple<V>(&mut self,
_len: usize,
_visitor: V)
-> Result<V::Value, Self::Error> where V: Visitor { ... } fn visit_struct<V>(&mut self,
_fields: &'static [&'static str],
_visitor: V)
-> Result<V::Value, Self::Error> where V: Visitor { ... } }
VariantVisitor
is a visitor that is created by the Deserializer
and passed to the Deserialize
in order to deserialize a specific enum variant.
Associated Types
Required Methods
fn visit_variant<V>(&mut self) -> Result<V, Self::Error> where V: Deserialize
visit_variant
is called to identify which variant to deserialize.
Provided Methods
fn visit_unit(&mut self) -> Result<(), Self::Error>
visit_unit
is called when deserializing a variant with no values.
fn visit_newtype<T>(&mut self) -> Result<T, Self::Error> where T: Deserialize
visit_newtype
is called when deserializing a variant with a single value. By default this uses the visit_tuple
method to deserialize the value.
fn visit_tuple<V>(&mut self,
_len: usize,
_visitor: V)
-> Result<V::Value, Self::Error> where V: Visitor
_len: usize,
_visitor: V)
-> Result<V::Value, Self::Error> where V: Visitor
visit_tuple
is called when deserializing a tuple-like variant.
fn visit_struct<V>(&mut self,
_fields: &'static [&'static str],
_visitor: V)
-> Result<V::Value, Self::Error> where V: Visitor
_fields: &'static [&'static str],
_visitor: V)
-> Result<V::Value, Self::Error> where V: Visitor
visit_struct
is called when deserializing a struct-like variant.
Implementors
impl<'a> VariantVisitor for StrDeserializer<'a>
impl<'a> VariantVisitor for StringDeserializer
impl<'a, T> VariantVisitor for &'a mut T where T: VariantVisitor