# Struct cargo::util::config::de::ValueDeserializer

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    struct ValueDeserializer<'config> {
        hits: u32,
        definition: Definition,
        de: Option<Deserializer<'config>>,
        str_value: Option<String>,
    }

Expand description

This is a deserializer that deserializes into a `Value<T>` for configuration.

This is a special deserializer because it deserializes one of its struct fields into the location that this configuration value was defined in.

See more comments in `value.rs` for the protocol used here.

## Fields§

§`hits: u32`§`definition: Definition`§`de: Option<Deserializer<'config>>`

The deserializer, used to actually deserialize a Value struct. This is `None` if deserializing a string.

§`str_value: Option<String>`

A string value to deserialize.

This is used for situations where you can’t address a string via a TOML key, such as a string inside an array. The `ConfigSeqAccess` doesn’t know if the type it should deserialize to is a `String` or `Value<String>`, so `ValueDeserializer` needs to be able to handle both.

## Implementations§

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### impl<'config> ValueDeserializer<'config>

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#### fn new( de: Deserializer<'config> ) -> Result<ValueDeserializer<'config>, ConfigError>

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#### fn new_with_string( s: String, definition: Definition ) -> ValueDeserializer<'config>

## Trait Implementations§

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### impl<'de, 'config> Deserializer<'de> for ValueDeserializer<'config>

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#### type Error = ConfigError

The error type that can be returned if some error occurs during deserialization.
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#### 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`. Read more
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#### 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`. Read more
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#### 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.
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#### 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. Read more
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#### 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. Read more
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#### 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.
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#### 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.
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#### 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.
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#### 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.
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#### 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.
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#### 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.
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#### 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.
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#### 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.
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#### 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. Read more
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#### 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.
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#### 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.
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#### 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.
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#### 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.
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#### 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.
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#### 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.
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#### 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.
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#### 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.
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#### 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.
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#### 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.
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#### 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`. Read more
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#### 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`. Read more
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#### 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.
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#### 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.
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#### 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.
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#### fn deserialize_i128<V>( self, visitor: V ) -> Result<<V as Visitor<'de>>::Value, Self::Error>where V: Visitor<'de>,

Hint that the `Deserialize` type is expecting an `i128` value. Read more
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#### fn deserialize_u128<V>( self, visitor: V ) -> Result<<V as Visitor<'de>>::Value, Self::Error>where V: Visitor<'de>,

Hint that the `Deserialize` type is expecting an `u128` value. Read more
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#### fn is_human_readable(&self) -> bool

Determine whether `Deserialize` implementations should expect to deserialize their human-readable form. Read more
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### impl<'de, 'config> MapAccess<'de> for ValueDeserializer<'config>

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#### type Error = ConfigError

The error type that can be returned if some error occurs during deserialization.
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#### fn next_key_seed<K>(&mut self, seed: K) -> Result<Option<K::Value>, Self::Error>where K: DeserializeSeed<'de>,

This returns `Ok(Some(key))` for the next key in the map, or `Ok(None)` if there are no more remaining entries. Read more
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#### fn next_value_seed<V>(&mut self, seed: V) -> Result<V::Value, Self::Error>where V: DeserializeSeed<'de>,

This returns a `Ok(value)` for the next value in the map. Read more
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#### fn next_entry_seed<K, V>( &mut self, kseed: K, vseed: V ) -> Result<Option<(<K as DeserializeSeed<'de>>::Value, <V as DeserializeSeed<'de>>::Value)>, Self::Error>where K: DeserializeSeed<'de>, V: 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. Read more
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#### 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. Read more
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#### 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. Read more
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#### 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. Read more
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#### fn size_hint(&self) -> Option<usize>

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

## Auto Trait Implementations§

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### impl<'config> !RefUnwindSafe for ValueDeserializer<'config>

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### impl<'config> !Send for ValueDeserializer<'config>

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### impl<'config> !Sync for ValueDeserializer<'config>

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### impl<'config> Unpin for ValueDeserializer<'config>

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### impl<'config> !UnwindSafe for ValueDeserializer<'config>

## Blanket Implementations§

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### impl<T> Any for Twhere T: 'static + ?Sized,

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#### fn type_id(&self) -> TypeId

Gets the `TypeId` of `self`. Read more
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### impl<T> Borrow<T> for Twhere T: ?Sized,

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#### fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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### impl<T> BorrowMut<T> for Twhere T: ?Sized,

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#### fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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### impl<T> From<T> for T

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#### fn from(t: T) -> T

Returns the argument unchanged.

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### impl<T> Instrument for T

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#### fn instrument(self, span: Span) -> Instrumented<Self>

Instruments this type with the provided `Span`, returning an `Instrumented` wrapper. Read more
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#### fn in_current_span(self) -> Instrumented<Self>

Instruments this type with the current `Span`, returning an `Instrumented` wrapper. Read more
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### impl<T, U> Into<U> for Twhere U: From<T>,

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#### fn into(self) -> U

Calls `U::from(self)`.

That is, this conversion is whatever the implementation of `From<T> for U` chooses to do.

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### impl<T> Same<T> for T

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#### type Output = T

Should always be `Self`
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### impl<T, U> TryFrom<U> for Twhere U: Into<T>,

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#### type Error = Infallible

The type returned in the event of a conversion error.
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#### fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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### impl<T, U> TryInto<U> for Twhere U: TryFrom<T>,

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

The type returned in the event of a conversion error.
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#### fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
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### impl<V, T> VZip<V> for Twhere V: MultiLane<T>,

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#### fn vzip(self) -> V

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### impl<T> WithSubscriber for T

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#### fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>where S: Into<Dispatch>,

Attaches the provided `Subscriber` to this type, returning a `WithDispatch` wrapper. Read more
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#### fn with_current_subscriber(self) -> WithDispatch<Self>

Attaches the current default `Subscriber` to this type, returning a `WithDispatch` wrapper. Read more

## Layout§

Note: Most layout information is completely unstable and may even differ between compilations. The only exception is types with certain `repr(...)` attributes. Please see the Rust Reference’s “Type Layout” chapter for details on type layout guarantees.

Size:128 bytes