# serde_urlencoded::de::Deserializer - Rust
API documentation for the Rust `Deserializer` struct in crate `serde_urlencoded`.
Keywords: rust, rustlang, rust-lang, Deserializer

# Struct serde_urlencoded::de::Deserializer [−] [src]

    pub struct Deserializer<'de> { /* fields omitted */ }

A deserializer for the `application/x-www-form-urlencoded` format.

- Supported top-level outputs are structs, maps and sequences of pairs, with or without a given length.

- Main `deserialize` methods defers to `deserialize_map`.

- Everything else but `deserialize_seq` and `deserialize_seq_fixed_size` defers to `deserialize`.

## Implementations

### `impl<'de> Deserializer<'de>` [src]

#### `pub fn new(parser: UrlEncodedParse<'de>) -> Self` [src]

Returns a new `Deserializer`.

## Trait Implementations

### `impl<'de> Deserializer<'de> for Deserializer<'de>` [src]

#### `type Error = Error`

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

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

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

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

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

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

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

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

Hint that the `Deserialize` type is expecting a unit value.

#### `fn deserialize_bool<V>(self, visitor: V) -> Result<V::Value, Self::Error> where
V: Visitor<'de>,` [src]

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<'de>,` [src]

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>,` [src]

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>,` [src]

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>,` [src]

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<'de>,` [src]

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>,` [src]

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>,` [src]

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>,` [src]

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<'de>,` [src]

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>,` [src]

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>,` [src]

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>,` [src]

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

#### `fn deserialize_string<V>(self, visitor: V) -> Result<V::Value, Self::Error> where
V: Visitor<'de>,` [src]

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

#### `fn deserialize_option<V>(self, visitor: V) -> Result<V::Value, Self::Error> where
V: Visitor<'de>,` [src]

Hint that the `Deserialize` type is expecting an optional value. Read more

#### `fn deserialize_bytes<V>(self, visitor: V) -> Result<V::Value, Self::Error> where
V: Visitor<'de>,` [src]

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

#### `fn deserialize_byte_buf<V>(self, visitor: V) -> Result<V::Value, Self::Error> where
V: Visitor<'de>,` [src]

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

#### `pub fn deserialize_i128<V>(
self,
visitor: V
) -> Result<<V as Visitor<'de>>::Value, Self::Error> where
V: Visitor<'de>,` [src]

Hint that the `Deserialize` type is expecting an `i128` value. Read more

#### `pub fn deserialize_u128<V>(
self,
visitor: V
) -> Result<<V as Visitor<'de>>::Value, Self::Error> where
V: Visitor<'de>,` [src]

Hint that the `Deserialize` type is expecting an `u128` value. Read more

#### `pub fn is_human_readable(&self) -> bool` [src]

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

## Auto Trait Implementations

### `impl<'de> RefUnwindSafe for Deserializer<'de>` [src]

### `impl<'de> Send for Deserializer<'de>` [src]

### `impl<'de> Sync for Deserializer<'de>` [src]

### `impl<'de> Unpin for Deserializer<'de>` [src]

### `impl<'de> UnwindSafe for Deserializer<'de>` [src]

## Blanket Implementations

### `impl<T> Any for T where
T: 'static + ?Sized,` [src]

#### `pub fn type_id(&self) -> TypeId` [src]

Gets the `TypeId` of `self`. Read more

### `impl<T> Borrow<T> for T where
T: ?Sized,` [src]

#### `pub fn borrow(&self) -> &T` [src]

Immutably borrows from an owned value. Read more

### `impl<T> BorrowMut<T> for T where
T: ?Sized,` [src]

#### `pub fn borrow_mut(&mut self) -> &mut T` [src]

Mutably borrows from an owned value. Read more

### `impl<T> From<T> for T` [src]

#### `pub fn from(t: T) -> T` [src]

Performs the conversion.

### `impl<T, U> Into<U> for T where
U: From<T>,` [src]

#### `pub fn into(self) -> U` [src]

Performs the conversion.

### `impl<T, U> TryFrom<U> for T where
U: Into<T>,` [src]

#### `type Error = Infallible`

The type returned in the event of a conversion error.

#### `pub fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>` [src]

Performs the conversion.

### `impl<T, U> TryInto<U> for T where
U: TryFrom<T>,` [src]

#### `type Error = <U as TryFrom<T>>::Error`

The type returned in the event of a conversion error.

#### `pub fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>` [src]

Performs the conversion.