Struct Attributes

pub struct Attributes(pub Object<Attribute>);

Wrapper struct around a collection of attributes with some convenience methods.

Tuple Fields

0: Object<Attribute>

Implementations

impl Attributes

pub fn new() -> Self

Creates an empty collection of attributes.

pub fn get_value<Q>(&self, key: &Q) -> Option<&Value>

where String: Borrow<Q>, Q: Ord + ?Sized,

Returns the value of the attribute with the given key.

pub fn get_attribute<Q>(&self, key: &Q) -> Option<&Attribute>

where String: Borrow<Q>, Q: Ord + ?Sized,

Returns the attribute with the given key.

pub fn insert<V: Into<AttributeValue>>(&mut self, key: String, value: V)

Inserts an attribute with the given value into this collection.

pub fn insert_raw(&mut self, key: String, attribute: Annotated<Attribute>)

Inserts an annotated attribute into this collection.

pub fn contains_key<Q>(&self, key: &Q) -> bool

where String: Borrow<Q>, Q: Ord + ?Sized,

Checks whether this collection contains an attribute with the given key.

pub fn iter_mut(&mut self) -> IterMut<'_, String, Annotated<Attribute>>

Iterates mutably over this collection’s attribute keys and values.

Trait Implementations

impl Clone for Attributes

fn clone(&self) -> Attributes

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for Attributes

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

Formats the value using the given formatter.

impl Default for Attributes

fn default() -> Attributes

Returns the “default value” for a type.

impl Empty for Attributes

fn is_empty(&self) -> bool

Returns whether this value is empty.

fn is_deep_empty(&self) -> bool

Returns whether this value is empty or all of its descendants are empty.

impl FromIterator<(String, Annotated<Attribute>)> for Attributes

fn from_iter<T: IntoIterator<Item = (String, Annotated<Attribute>)>>( iter: T, ) -> Self

Creates a value from an iterator.

impl FromValue for Attributes

fn from_value(__value: Annotated<Value>) -> Annotated<Self>

Creates a meta structure from an annotated boxed value.

impl IntoIterator for Attributes

type Item = (String, Annotated<Attribute>)

The type of the elements being iterated over.

type IntoIter = IntoIter<String, Annotated<Attribute>>

Which kind of iterator are we turning this into?

fn into_iter(self) -> Self::IntoIter

Creates an iterator from a value.

impl IntoValue for Attributes

fn into_value(self) -> Value

Boxes the meta structure back into a value.

fn serialize_payload<S>( &self, __serializer: S, __behavior: SkipSerialization, ) -> Result<S::Ok, S::Error>

where Self: Sized, S: Serializer,

Efficiently serializes the payload directly.

fn extract_child_meta(&self) -> MetaMap

where Self: Sized,

Extracts children meta map out of a value.

fn extract_meta_tree(value: &Annotated<Self>) -> MetaTree

where Self: Sized,

Extracts the meta tree out of annotated value.

impl PartialEq for Attributes

fn eq(&self, other: &Attributes) -> bool

Tests for self and other values to be equal, and is used by ==.

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

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

impl ProcessValue for Attributes

fn value_type(&self) -> EnumSet<ValueType>

Returns the type of the value.

fn process_value<P>( &mut self, __meta: &mut Meta, __processor: &mut P, __state: &ProcessingState<'_>, ) -> ProcessingResult

where P: Processor,

Executes a processor on this value.

fn process_child_values<P>( &mut self, __processor: &mut P, __state: &ProcessingState<'_>, ) -> ProcessingResult

where P: Processor,

Recurses into children of this value.

impl StructuralPartialEq for Attributes