Struct serde_json::de::Deserializer

pub struct Deserializer<R> { /* fields omitted */ }

A structure that deserializes JSON into Rust values.

Methods

impl<I> Deserializer<IteratorRead<I>> where I: Iterator<Item=Result<u8>>

fn from_iter(iter: I) -> Self

Creates a JSON parser from a std::iter::Iterator.

impl<R> Deserializer<IteratorRead<Bytes<R>>> where R: Read

fn from_reader(reader: R) -> Self

Creates a JSON parser from an io::Read.

impl<'a> Deserializer<SliceRead<'a>>

fn from_slice(bytes: &'a [u8]) -> Self

Creates a JSON parser from a &[u8].

impl<'a> Deserializer<StrRead<'a>>

fn from_str(s: &'a str) -> Self

Creates a JSON parser from a &str.

impl<R: Read> Deserializer<R>

fn end(&mut self) -> Result<()>

The Deserializer::end method should be called after a value has been fully deserialized. This allows the Deserializer to validate that the input stream is at the end or that it only has trailing whitespace.

fn into_iter<T>(self) -> StreamDeserializer<R, T> where T: Deserialize

Turn a JSON deserializer into an iterator over values of type T.

Trait Implementations

impl<'a, R: Read> Deserializer for &'a mut Deserializer<R>

type Error = Error

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

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

Require the Deserializer to figure out how to drive the visitor based on what data type is in the input.

fn deserialize_option<V>(self, visitor: V) -> Result<V::Value> where V: Visitor

Parses a null as a None, and any other values as a Some(...).

fn deserialize_newtype_struct<V>(self,
                                 _name: &str,
                                 visitor: V)
                                 -> Result<V::Value> where V: Visitor

Parses a newtype struct as the underlying value.

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

Parses an enum as an object like {"$KEY":$VALUE}, where $VALUE is either a straight value, a [..], or a {..}.

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

Hint that the Deserialize type is expecting a bool value.

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

Hint that the Deserialize type is expecting a u8 value.

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

Hint that the Deserialize type is expecting a u16 value.

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

Hint that the Deserialize type is expecting a u32 value.

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

Hint that the Deserialize type is expecting a u64 value.

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

Hint that the Deserialize type is expecting an i8 value.

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

Hint that the Deserialize type is expecting an i16 value.

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

Hint that the Deserialize type is expecting an i32 value.

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

Hint that the Deserialize type is expecting an i64 value.

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

Hint that the Deserialize type is expecting a f32 value.

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

Hint that the Deserialize type is expecting a f64 value.

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

Hint that the Deserialize type is expecting a char value.

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

Hint that the Deserialize type is expecting a string value and does not benefit from taking ownership of buffered data owned by the Deserializer.

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

Hint that the Deserialize type is expecting a string value and would benefit from taking ownership of buffered data owned by the Deserializer.

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

Hint that the Deserialize type is expecting a unit value.

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

Hint that the Deserialize type is expecting a sequence of values.

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

Hint that the Deserialize type is expecting a sequence of values and knows how many values there are without looking at the serialized data.

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

Hint that the Deserialize type is expecting a byte array and does not benefit from taking ownership of buffered data owned by the Deserializer.

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

Hint that the Deserialize type is expecting a byte array and would benefit from taking ownership of buffered data owned by the Deserializer.

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

Hint that the Deserialize type is expecting a map of key-value pairs.

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

Hint that the Deserialize type is expecting a unit struct with a particular name.

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

Hint that the Deserialize type is expecting a tuple struct with a particular name and number of fields.

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

Hint that the Deserialize type is expecting a struct with a particular name and fields.

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

Hint that the Deserialize type is expecting the name of a struct field.

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

Hint that the Deserialize type is expecting a tuple value with a particular number of elements.

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

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