Struct Extensions 

pub struct Extensions { /* private fields */ }

Unmodelled fields, in serde_json::Map order.

Implementations

impl Extensions

pub fn from_json_object(object: Map<String, Value>) -> Self

Builds a bag from a JSON object.

pub fn absorb_json(&mut self, object: &Map<String, Value>)

Merges a JSON object’s members in, keeping existing keys.

pub fn take(&mut self, key: &str) -> Option<ExtensionValue>

Removes a key and returns what was there.

pub fn to_json_object(&self) -> Map<String, Value>

Renders the bag back to a JSON object.

impl Extensions

pub const fn empty() -> Self

No extensions. The common case: most messages have none.

pub fn with(self, key: impl Into<String>, value: ExtensionValue) -> Self

Adds an entry, keeping insertion order and allowing duplicate keys.

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

Adds an entry in place.

pub fn get(&self, key: &str) -> Option<&ExtensionValue>

The first value for key, or None.

“First” because duplicates are preserved, and the first is the one serde would have used.

pub fn get_all<'a>( &'a self, key: &'a str, ) -> impl Iterator<Item = &'a ExtensionValue>

Every value for key, in order.

pub fn contains(&self, key: &str) -> bool

Whether key is present at all.

pub fn iter(&self) -> impl Iterator<Item = (&str, &ExtensionValue)>

The entries, in order.

pub const fn is_empty(&self) -> bool

Whether there are none.

pub const fn len(&self) -> usize

How many entries there are, counting duplicates separately.

pub fn into_entries(self) -> Vec<(String, ExtensionValue)>

Consumes the bag, yielding its entries in order.

Trait Implementations

impl Clone for Extensions

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Extensions

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

Formats the value using the given formatter.

impl Default for Extensions

fn default() -> Self

Returns the “default value” for a type.

impl Display for Extensions

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

Formats the value using the given formatter.

impl PartialEq for Extensions

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for Extensions