Struct serde::de::value::MapDeserializer

pub struct MapDeserializer<'de, I, E>where
    I: Iterator,
    I::Item: Pair,{ /* private fields */ }

A deserializer that iterates over a map.

Implementations

impl<'de, I, E> MapDeserializer<'de, I, E>where
    I: Iterator,
    I::Item: Pair,

pub fn new(iter: I) -> Self

Construct a new MapDeserializer<I, E>.

impl<'de, I, E> MapDeserializer<'de, I, E>where
    I: Iterator,
    I::Item: Pair,
    E: Error,

pub fn end(self) -> Result<(), E>

Check for remaining elements after passing a MapDeserializer to Visitor::visit_map.

Trait Implementations

impl<'de, I, E> Clone for MapDeserializer<'de, I, E>where
    I: Iterator + Clone,
    I::Item: Pair,
    <I::Item as Pair>::Second: Clone,

fn clone(&self) -> Self

Returns a copy of the value.

const fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl<'de, I, E> Debug for MapDeserializer<'de, I, E>where
    I: Iterator + Debug,
    I::Item: Pair,
    <I::Item as Pair>::Second: Debug,

fn fmt(&self, formatter: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<'de, I, E> Deserializer<'de> for MapDeserializer<'de, I, E>where
    I: Iterator,
    I::Item: Pair,
    <I::Item as Pair>::First: IntoDeserializer<'de, E>,
    <I::Item as Pair>::Second: IntoDeserializer<'de, E>,
    E: Error,

type Error = E

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

fn deserialize_any<V>(self, visitor: V) -> Result<V::Value, Self::Error>where
    V: Visitor<'de>,

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

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

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

fn deserialize_tuple<V>(
    self,
    len: usize,
    visitor: V
) -> Result<V::Value, Self::Error>where
    V: Visitor<'de>,

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_bool<V>(self, visitor: V) -> Result<V::Value, Self::Error>where
    V: Visitor<'de>,

Hint that the Deserialize type is expecting a bool value.

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

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<'de>,

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<'de>,

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<'de>,

Hint that the Deserialize type is expecting an i64 value.

fn deserialize_i128<V>(self, visitor: V) -> Result<V::Value, Self::Error>where
    V: Visitor<'de>,

Hint that the Deserialize type is expecting an i128 value.

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

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<'de>,

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<'de>,

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<'de>,

Hint that the Deserialize type is expecting a u64 value.

fn deserialize_u128<V>(self, visitor: V) -> Result<V::Value, Self::Error>where
    V: Visitor<'de>,

Hint that the Deserialize type is expecting an u128 value.

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

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<'de>,

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<'de>,

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<'de>,

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<'de>,

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_bytes<V>(self, visitor: V) -> Result<V::Value, Self::Error>where
    V: Visitor<'de>,

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<'de>,

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_option<V>(self, visitor: V) -> Result<V::Value, Self::Error>where
    V: Visitor<'de>,

Hint that the Deserialize type is expecting an optional value.

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

Hint that the Deserialize type is expecting a unit value.

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

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

fn deserialize_newtype_struct<V>(
    self,
    name: &'static str,
    visitor: V
) -> Result<V::Value, Self::Error>where
    V: Visitor<'de>,

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

fn deserialize_tuple_struct<V>(
    self,
    name: &'static str,
    len: usize,
    visitor: V
) -> Result<V::Value, Self::Error>where
    V: Visitor<'de>,

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

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

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

fn deserialize_struct<V>(
    self,
    name: &'static str,
    fields: &'static [&'static str],
    visitor: V
) -> Result<V::Value, Self::Error>where
    V: Visitor<'de>,

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

fn deserialize_enum<V>(
    self,
    name: &'static str,
    variants: &'static [&'static str],
    visitor: V
) -> Result<V::Value, Self::Error>where
    V: Visitor<'de>,

Hint that the Deserialize type is expecting an enum value with a particular name and possible variants.

fn deserialize_identifier<V>(self, visitor: V) -> Result<V::Value, Self::Error>where
    V: Visitor<'de>,

Hint that the Deserialize type is expecting the name of a struct field or the discriminant of an enum variant.

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

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

fn is_human_readable(&self) -> bool

Determine whether Deserialize implementations should expect to deserialize their human-readable form.

impl<'de, I, E> MapAccess<'de> for MapDeserializer<'de, I, E>where
    I: Iterator,
    I::Item: Pair,
    <I::Item as Pair>::First: IntoDeserializer<'de, E>,
    <I::Item as Pair>::Second: IntoDeserializer<'de, E>,
    E: Error,

type Error = E

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

fn next_key_seed<T>(&mut self, seed: T) -> Result<Option<T::Value>, Self::Error>where
    T: DeserializeSeed<'de>,

This returns Ok(Some(key)) for the next key in the map, or Ok(None) if there are no more remaining entries.

fn next_value_seed<T>(&mut self, seed: T) -> Result<T::Value, Self::Error>where
    T: DeserializeSeed<'de>,

This returns a Ok(value) for the next value in the map.

fn next_entry_seed<TK, TV>(
    &mut self,
    kseed: TK,
    vseed: TV
) -> Result<Option<(TK::Value, TV::Value)>, Self::Error>where
    TK: DeserializeSeed<'de>,
    TV: DeserializeSeed<'de>,

This returns Ok(Some((key, value))) for the next (key-value) pair in the map, or Ok(None) if there are no more remaining items.

fn size_hint(&self) -> Option<usize>

Returns the number of entries remaining in the map, if known.

fn next_key<K>(&mut self) -> Result<Option<K>, Self::Error>where
    K: Deserialize<'de>,

This returns Ok(Some(key)) for the next key in the map, or Ok(None) if there are no more remaining entries.

fn next_value<V>(&mut self) -> Result<V, Self::Error>where
    V: Deserialize<'de>,

This returns a Ok(value) for the next value in the map.

fn next_entry<K, V>(&mut self) -> Result<Option<(K, V)>, Self::Error>where
    K: Deserialize<'de>,
    V: Deserialize<'de>,

This returns Ok(Some((key, value))) for the next (key-value) pair in the map, or Ok(None) if there are no more remaining items.

impl<'de, I, E> SeqAccess<'de> for MapDeserializer<'de, I, E>where
    I: Iterator,
    I::Item: Pair,
    <I::Item as Pair>::First: IntoDeserializer<'de, E>,
    <I::Item as Pair>::Second: IntoDeserializer<'de, E>,
    E: Error,

type Error = E

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

fn next_element_seed<T>(
    &mut self,
    seed: T
) -> Result<Option<T::Value>, Self::Error>where
    T: DeserializeSeed<'de>,

This returns Ok(Some(value)) for the next value in the sequence, or Ok(None) if there are no more remaining items.

fn size_hint(&self) -> Option<usize>

Returns the number of elements remaining in the sequence, if known.

fn next_element<T>(&mut self) -> Result<Option<T>, Self::Error>where
    T: Deserialize<'de>,

This returns Ok(Some(value)) for the next value in the sequence, or Ok(None) if there are no more remaining items.