Struct serde::de::value::CowStrDeserializer

pub struct CowStrDeserializer<'a, E>(_, _);

A helper deserializer that deserializes a String.

Trait Implementations

impl<'a, E> Deserializer for CowStrDeserializer<'a, E> where
    E: Error, 

type Error = E

The error type that can be returned if some error occurs during deserialization.

fn deserialize<V>(&mut self, visitor: V) -> Result<V::Value, Self::Error> where
    V: Visitor, 

This method walks a visitor through a value as it is being deserialized.

fn deserialize_enum<V>(
    &mut self,
    _name: &str,
    _variants: &'static [&'static str],
    visitor: V
) -> Result<V::Value, Self::Error> where
    V: EnumVisitor, 

This method hints that the Deserialize type is expecting an enum value. This allows deserializers that provide a custom enumeration serialization to properly deserialize the type.

fn deserialize_bool<__V>(
    &mut self,
    visitor: __V
) -> Result<__V::Value, Self::Error> where
    __V: Visitor, 

This method hints that the Deserialize type is expecting a bool value.

fn deserialize_usize<__V>(
    &mut self,
    visitor: __V
) -> Result<__V::Value, Self::Error> where
    __V: Visitor, 

This method hints that the Deserialize type is expecting an usize value. A reasonable default is to forward to deserialize_u64.

fn deserialize_u8<__V>(
    &mut self,
    visitor: __V
) -> Result<__V::Value, Self::Error> where
    __V: Visitor, 

This method hints that the Deserialize type is expecting an u8 value. A reasonable default is to forward to deserialize_u64.

fn deserialize_u16<__V>(
    &mut self,
    visitor: __V
) -> Result<__V::Value, Self::Error> where
    __V: Visitor, 

This method hints that the Deserialize type is expecting an u16 value. A reasonable default is to forward to deserialize_u64.

fn deserialize_u32<__V>(
    &mut self,
    visitor: __V
) -> Result<__V::Value, Self::Error> where
    __V: Visitor, 

This method hints that the Deserialize type is expecting an u32 value. A reasonable default is to forward to deserialize_u64.

fn deserialize_u64<__V>(
    &mut self,
    visitor: __V
) -> Result<__V::Value, Self::Error> where
    __V: Visitor, 

This method hints that the Deserialize type is expecting an u64 value.

fn deserialize_isize<__V>(
    &mut self,
    visitor: __V
) -> Result<__V::Value, Self::Error> where
    __V: Visitor, 

This method hints that the Deserialize type is expecting an isize value. A reasonable default is to forward to deserialize_i64.

fn deserialize_i8<__V>(
    &mut self,
    visitor: __V
) -> Result<__V::Value, Self::Error> where
    __V: Visitor, 

This method hints that the Deserialize type is expecting an i8 value. A reasonable default is to forward to deserialize_i64.

fn deserialize_i16<__V>(
    &mut self,
    visitor: __V
) -> Result<__V::Value, Self::Error> where
    __V: Visitor, 

This method hints that the Deserialize type is expecting an i16 value. A reasonable default is to forward to deserialize_i64.

fn deserialize_i32<__V>(
    &mut self,
    visitor: __V
) -> Result<__V::Value, Self::Error> where
    __V: Visitor, 

This method hints that the Deserialize type is expecting an i32 value. A reasonable default is to forward to deserialize_i64.

fn deserialize_i64<__V>(
    &mut self,
    visitor: __V
) -> Result<__V::Value, Self::Error> where
    __V: Visitor, 

This method hints that the Deserialize type is expecting an i64 value.

fn deserialize_f32<__V>(
    &mut self,
    visitor: __V
) -> Result<__V::Value, Self::Error> where
    __V: Visitor, 

This method hints that the Deserialize type is expecting a f32 value. A reasonable default is to forward to deserialize_f64.

fn deserialize_f64<__V>(
    &mut self,
    visitor: __V
) -> Result<__V::Value, Self::Error> where
    __V: Visitor, 

This method hints that the Deserialize type is expecting a f64 value.

fn deserialize_char<__V>(
    &mut self,
    visitor: __V
) -> Result<__V::Value, Self::Error> where
    __V: Visitor, 

This method hints that the Deserialize type is expecting a char value.

fn deserialize_str<__V>(
    &mut self,
    visitor: __V
) -> Result<__V::Value, Self::Error> where
    __V: Visitor, 

This method hints that the Deserialize type is expecting a &str value.

fn deserialize_string<__V>(
    &mut self,
    visitor: __V
) -> Result<__V::Value, Self::Error> where
    __V: Visitor, 

This method hints that the Deserialize type is expecting a String value.

fn deserialize_unit<__V>(
    &mut self,
    visitor: __V
) -> Result<__V::Value, Self::Error> where
    __V: Visitor, 

This method hints that the Deserialize type is expecting an unit value.

fn deserialize_option<__V>(
    &mut self,
    visitor: __V
) -> Result<__V::Value, Self::Error> where
    __V: Visitor, 

This method hints that the Deserialize type is expecting an Option value. This allows deserializers that encode an optional value as a nullable value to convert the null value into a None, and a regular value as Some(value).

fn deserialize_seq<__V>(
    &mut self,
    visitor: __V
) -> Result<__V::Value, Self::Error> where
    __V: Visitor, 

This method hints that the Deserialize type is expecting a sequence value. This allows deserializers to parse sequences that aren't tagged as sequences.

fn deserialize_seq_fixed_size<__V>(
    &mut self,
    _: usize,
    visitor: __V
) -> Result<__V::Value, Self::Error> where
    __V: Visitor, 

This method hints that the Deserialize type is expecting a fixed size array. This allows deserializers to parse arrays that aren't tagged as arrays.

fn deserialize_bytes<__V>(
    &mut self,
    visitor: __V
) -> Result<__V::Value, Self::Error> where
    __V: Visitor, 

This method hints that the Deserialize type is expecting a Vec<u8>. This allows deserializers that provide a custom byte vector serialization to properly deserialize the type.

fn deserialize_map<__V>(
    &mut self,
    visitor: __V
) -> Result<__V::Value, Self::Error> where
    __V: Visitor, 

This method hints that the Deserialize type is expecting a map of values. This allows deserializers to parse sequences that aren't tagged as maps.

fn deserialize_unit_struct<__V>(
    &mut self,
    _: &'static str,
    visitor: __V
) -> Result<__V::Value, Self::Error> where
    __V: Visitor, 

This method hints that the Deserialize type is expecting a unit struct. This allows deserializers to a unit struct that aren't tagged as a unit struct.

fn deserialize_newtype_struct<__V>(
    &mut self,
    _: &'static str,
    visitor: __V
) -> Result<__V::Value, Self::Error> where
    __V: Visitor, 

This method hints that the Deserialize type is expecting a newtype struct. This allows deserializers to a newtype struct that aren't tagged as a newtype struct. A reasonable default is to simply deserialize the expected value directly.

fn deserialize_tuple_struct<__V>(
    &mut self,
    _: &'static str,
    _: usize,
    visitor: __V
) -> Result<__V::Value, Self::Error> where
    __V: Visitor, 

This method hints that the Deserialize type is expecting a tuple struct. This allows deserializers to parse sequences that aren't tagged as sequences.

fn deserialize_struct<__V>(
    &mut self,
    _: &'static str,
    _: &'static [&'static str],
    visitor: __V
) -> Result<__V::Value, Self::Error> where
    __V: Visitor, 

This method hints that the Deserialize type is expecting a struct. This allows deserializers to parse sequences that aren't tagged as maps.

fn deserialize_struct_field<__V>(
    &mut self,
    visitor: __V
) -> Result<__V::Value, Self::Error> where
    __V: Visitor, 

This method hints that the Deserialize type is expecting some sort of struct field name. This allows deserializers to choose between &str, usize, or &[u8] to properly deserialize a struct field.

fn deserialize_tuple<__V>(
    &mut self,
    _: usize,
    visitor: __V
) -> Result<__V::Value, Self::Error> where
    __V: Visitor, 

This method hints that the Deserialize type is expecting a tuple value. This allows deserializers that provide a custom tuple serialization to properly deserialize the type.

fn deserialize_ignored_any<__V>(
    &mut self,
    visitor: __V
) -> Result<__V::Value, Self::Error> where
    __V: Visitor, 

This method hints that the Deserialize type needs to deserialize a value whose type doesn't matter because it is ignored.

impl<'a, E> VariantVisitor for CowStrDeserializer<'a, E> where
    E: Error, 

type Error = E

The error type that can be returned if some error occurs during deserialization.

fn visit_variant<T>(&mut self) -> Result<T, Self::Error> where
    T: Deserialize, 

visit_variant is called to identify which variant to deserialize.

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. A good default is often to use the visit_tuple method to deserialize a (value,).

fn visit_tuple<V>(
    &mut self,
    _len: usize,
    _visitor: V
) -> Result<V::Value, Self::Error> where
    V: Visitor, 

visit_tuple is called when deserializing a tuple-like variant. If no tuple variants are expected, yield a Err(serde::de::Error::invalid_type(serde::de::Type::TupleVariant))

fn visit_struct<V>(
    &mut self,
    _fields: &'static [&'static str],
    _visitor: V
) -> Result<V::Value, Self::Error> where
    V: Visitor, 

visit_struct is called when deserializing a struct-like variant. If no struct variants are expected, yield a Err(serde::de::Error::invalid_type(serde::de::Type::StructVariant))