Struct ExtensionRegistry 

pub struct ExtensionRegistry { /* private fields */ }

Per-session/runtime registry of advertised extension names (§7, §21.2).

Construct one per session; the runtime’s session bookkeeping owns it.

Implementations

impl ExtensionRegistry

pub fn new() -> Self

Construct an empty registry.

pub fn from_names<I, S>(names: I) -> Result<Self, String>

where I: IntoIterator<Item = S>, S: Into<String>,

Construct a registry pre-populated with names.

Errors

Returns the first malformed name, if any.

pub fn register(&mut self, name: String) -> Result<(), String>

Register an extension name.

Errors

Returns the offending name if it does not match an extension naming rule (§21.1).

pub fn is_advertised(&self, name: &str) -> bool

True when name was previously registered.

pub fn len(&self) -> usize

Number of advertised extensions.

pub fn is_empty(&self) -> bool

True when the registry has no advertised extensions.

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

Iterate the advertised names in sorted order.

pub fn classify(&self, type_name: &str) -> TypeClassification

Classify a wire-level type string per §21.3.

Trait Implementations

impl Clone for ExtensionRegistry

fn clone(&self) -> ExtensionRegistry

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ExtensionRegistry

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

Formats the value using the given formatter.

impl Default for ExtensionRegistry

fn default() -> ExtensionRegistry

Returns the “default value” for a type.