Enum scale_value::Composite

pub enum Composite<T> {
    Named(Vec<(String, Value<T>)>),
    Unnamed(Vec<Value<T>>),
}

A named or unnamed struct-like, array-like or tuple-like set of values. This is used to represent a range of composite values on their own, or as values for a specific Variant.

Variants

Named(Vec<(String, Value<T>)>)

Eg { foo: 2, bar: false }

Unnamed(Vec<Value<T>>)

Eg (2, false)

Implementations

impl<T> Composite<T>

pub fn named<S: Into<String>, Vals: IntoIterator<Item = (S, Value<T>)>>(
    vals: Vals
) -> Self

Construct a named composite type from any type which produces a tuple of keys and values when iterated over.

pub fn unnamed<Vals: IntoIterator<Item = Value<T>>>(vals: Vals) -> Self

Construct an unnamed composite type from any type which produces values when iterated over.

pub fn len(&self) -> usize

Return the number of values stored in this composite type.

pub fn is_empty(&self) -> bool

Is the composite type empty?

pub fn values(&self) -> impl Iterator<Item = &Value<T>>

Iterate over the values stored in this composite type.

pub fn into_values(self) -> impl Iterator<Item = Value<T>>

Iterate over the values stored in this composite type.

pub fn map_context<F, U>(self, f: F) -> Composite<U>where
    F: Clone + FnMut(T) -> U,

Map the context to some different type.

Trait Implementations

impl<Ctx> At<Ctx> for Composite<Ctx>

fn at<L: AsLocation>(&self, loc: L) -> Option<&Value<Ctx>>

Index into a value, returning a reference to the value if one exists, or None if not.

impl<T: Clone> Clone for Composite<T>

fn clone(&self) -> Composite<T>

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<T: Debug> Debug for Composite<T>

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for Composite<()>

fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>where
    D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl<'de, T> Deserializer<'de> for Composite<T>

type Error = DeserializerError

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_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_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_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_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_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_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_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_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_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<T> Display for Composite<T>

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

Formats the value using the given formatter.

impl From<Composite<()>> for Value<()>

fn from(val: Composite<()>) -> Self

Converts to this type from the input type.

impl<T> From<Composite<T>> for ValueDef<T>

fn from(val: Composite<T>) -> Self

Converts to this type from the input type.

impl<K: Into<String>, V: Into<Value<()>>> From<Vec<(K, V), Global>> for Composite<()>

fn from(vals: Vec<(K, V)>) -> Self

Converts to this type from the input type.

impl<V: Into<Value<()>>> From<Vec<V, Global>> for Composite<()>

fn from(vals: Vec<V>) -> Self

Converts to this type from the input type.

impl<'de, T> IntoDeserializer<'de, DeserializerError> for Composite<T>

type Deserializer = Composite<T>

The type of the deserializer being converted into.

fn into_deserializer(self) -> Self::Deserializer

Convert this value into a deserializer.

impl<T: PartialEq> PartialEq<Composite<T>> for Composite<T>

fn eq(&self, other: &Composite<T>) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl<T> Serialize for Composite<T>

fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>where
    S: Serializer,

Serialize this value into the given Serde serializer.

impl<'de, T> VariantAccess<'de> for Composite<T>

type Error = DeserializerError

The error type that can be returned if some error occurs during deserialization. Must match the error type of our EnumAccess.

fn unit_variant(self) -> Result<(), Self::Error>

Called when deserializing a variant with no values.

fn newtype_variant_seed<S>(self, seed: S) -> Result<S::Value, Self::Error>where
    S: DeserializeSeed<'de>,

Called when deserializing a variant with a single value.

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

Called when deserializing a tuple-like variant.

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

Called when deserializing a struct-like variant.

fn newtype_variant<T>(self) -> Result<T, Self::Error>where
    T: Deserialize<'de>,

Called when deserializing a variant with a single value.

impl<T: Eq> Eq for Composite<T>

impl<T> StructuralEq for Composite<T>

impl<T> StructuralPartialEq for Composite<T>