Trait serde::de::Deserializer  
                   
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pub trait Deserializer {
    type Error: Error;
    fn visit<V>(&mut self, visitor: V) -> Result<V::Value, Self::Error> where V: Visitor;
    fn visit_bool<V>(&mut self, visitor: V) -> Result<V::Value, Self::Error> where V: Visitor { ... }
    fn visit_usize<V>(&mut self, visitor: V) -> Result<V::Value, Self::Error> where V: Visitor { ... }
    fn visit_u8<V>(&mut self, visitor: V) -> Result<V::Value, Self::Error> where V: Visitor { ... }
    fn visit_u16<V>(&mut self, visitor: V) -> Result<V::Value, Self::Error> where V: Visitor { ... }
    fn visit_u32<V>(&mut self, visitor: V) -> Result<V::Value, Self::Error> where V: Visitor { ... }
    fn visit_u64<V>(&mut self, visitor: V) -> Result<V::Value, Self::Error> where V: Visitor { ... }
    fn visit_isize<V>(&mut self, visitor: V) -> Result<V::Value, Self::Error> where V: Visitor { ... }
    fn visit_i8<V>(&mut self, visitor: V) -> Result<V::Value, Self::Error> where V: Visitor { ... }
    fn visit_i16<V>(&mut self, visitor: V) -> Result<V::Value, Self::Error> where V: Visitor { ... }
    fn visit_i32<V>(&mut self, visitor: V) -> Result<V::Value, Self::Error> where V: Visitor { ... }
    fn visit_i64<V>(&mut self, visitor: V) -> Result<V::Value, Self::Error> where V: Visitor { ... }
    fn visit_f32<V>(&mut self, visitor: V) -> Result<V::Value, Self::Error> where V: Visitor { ... }
    fn visit_f64<V>(&mut self, visitor: V) -> Result<V::Value, Self::Error> where V: Visitor { ... }
    fn visit_char<V>(&mut self, visitor: V) -> Result<V::Value, Self::Error> where V: Visitor { ... }
    fn visit_str<V>(&mut self, visitor: V) -> Result<V::Value, Self::Error> where V: Visitor { ... }
    fn visit_string<V>(&mut self, visitor: V) -> Result<V::Value, Self::Error> where V: Visitor { ... }
    fn visit_unit<V>(&mut self, visitor: V) -> Result<V::Value, Self::Error> where V: Visitor { ... }
    fn visit_option<V>(&mut self, visitor: V) -> Result<V::Value, Self::Error> where V: Visitor { ... }
    fn visit_seq<V>(&mut self, visitor: V) -> Result<V::Value, Self::Error> where V: Visitor { ... }
    fn visit_map<V>(&mut self, visitor: V) -> Result<V::Value, Self::Error> where V: Visitor { ... }
    fn visit_unit_struct<V>(&mut self,
                            _name: &'static str,
                            visitor: V)
                            -> Result<V::Value, Self::Error> where V: Visitor { ... }
    fn visit_newtype_struct<V>(&mut self,
                               name: &'static str,
                               visitor: V)
                               -> Result<V::Value, Self::Error> where V: Visitor { ... }
    fn visit_tuple_struct<V>(&mut self,
                             _name: &'static str,
                             len: usize,
                             visitor: V)
                             -> Result<V::Value, Self::Error> where V: Visitor { ... }
    fn visit_struct<V>(&mut self,
                       _name: &'static str,
                       _fields: &'static [&'static str],
                       visitor: V)
                       -> Result<V::Value, Self::Error> where V: Visitor { ... }
    fn visit_tuple<V>(&mut self,
                      _len: usize,
                      visitor: V)
                      -> Result<V::Value, Self::Error> where V: Visitor { ... }
    fn visit_enum<V>(&mut self,
                     _enum: &'static str,
                     _variants: &'static [&'static str],
                     _visitor: V)
                     -> Result<V::Value, Self::Error> where V: EnumVisitor { ... }
    fn visit_bytes<V>(&mut self, visitor: V) -> Result<V::Value, Self::Error> where V: Visitor { ... }
    fn visit_struct_field<V>(&mut self,
                             visitor: V)
                             -> Result<V::Value, Self::Error> where V: Visitor { ... }
    fn format() -> &'static str { ... }
}Deserializer is a trait that can deserialize values by threading a Visitor trait through a value. It supports two entry point styles which enables different kinds of deserialization.
The
visitmethod. File formats like JSON embed the type of it's construct in it's file format. This allows theDeserializerto deserialize into a generic type likejson::Value, which can represent all JSON types.The
visit_*methods. File formats like bincode do not embed in it's format how to decode it's values. It relies instead on theDeserializetype to hint to theDeserializerwith thevisit_*methods how it should parse the next value. One downside though to only supporting thevisit_*types is that it does not allow for deserializing into a genericjson::Value-esque type.
Associated Types
Required Methods
fn visit<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.
Provided Methods
fn visit_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 visit_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.
fn visit_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.
fn visit_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.
fn visit_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.
fn visit_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 visit_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.
fn visit_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.
fn visit_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.
fn visit_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.
fn visit_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 visit_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.
fn visit_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 visit_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 visit_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 visit_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 visit_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 visit_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 visit_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 visit_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 visit_unit_struct<V>(&mut self,
                        _name: &'static str,
                        visitor: V)
                        -> Result<V::Value, Self::Error> where V: Visitor
_name: &'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 visit_newtype_struct<V>(&mut self,
                           name: &'static str,
                           visitor: V)
                           -> Result<V::Value, Self::Error> where V: Visitor
name: &'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.
fn visit_tuple_struct<V>(&mut self,
                         _name: &'static str,
                         len: usize,
                         visitor: V)
                         -> Result<V::Value, Self::Error> where V: Visitor
_name: &'static str,
len: 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 visit_struct<V>(&mut self,
                   _name: &'static str,
                   _fields: &'static [&'static str],
                   visitor: V)
                   -> Result<V::Value, Self::Error> where V: Visitor
_name: &'static str,
_fields: &'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 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
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 visit_enum<V>(&mut self,
                 _enum: &'static str,
                 _variants: &'static [&'static str],
                 _visitor: V)
                 -> Result<V::Value, Self::Error> where V: EnumVisitor
_enum: &'static 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 visit_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 visit_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 key mapping. This allows deserializers to choose between &str, usize, or &[u8] to properly deserialize a struct key.
fn format() -> &'static str
Specify a format string for the deserializer.
The deserializer format is used to determine which format specific field attributes should be used with the deserializer.
Implementors
impl Deserializer for UnitDeserializerimpl Deserializer for BoolDeserializerimpl Deserializer for I8Deserializerimpl Deserializer for I16Deserializerimpl Deserializer for I32Deserializerimpl Deserializer for I64Deserializerimpl Deserializer for IsizeDeserializerimpl Deserializer for U8Deserializerimpl Deserializer for U16Deserializerimpl Deserializer for U32Deserializerimpl Deserializer for U64Deserializerimpl Deserializer for UsizeDeserializerimpl Deserializer for F32Deserializerimpl Deserializer for F64Deserializerimpl Deserializer for CharDeserializerimpl<'a> Deserializer for StrDeserializer<'a>impl Deserializer for StringDeserializerimpl<I, T> Deserializer for SeqDeserializer<I> where I: Iterator<Item = T>,
T: ValueDeserializerimpl<I, K, V> Deserializer for MapDeserializer<I, K, V> where I: Iterator<Item = (K, V)>,
K: ValueDeserializer,
V: ValueDeserializerimpl<'a> Deserializer for BytesDeserializer<'a>impl Deserializer for ByteBufDeserializer