Struct KeywordInterner 

pub struct KeywordInterner { /* private fields */ }

Deterministic keyword interner for tests and bootstrap metadata.

Implementations

impl KeywordInterner

pub fn intern(&mut self, keyword: Keyword) -> KwId

Interns a keyword, returning the stable id assigned by this interner.

pub fn get(&self, keyword: &Keyword) -> Option<KwId>

Looks up an already interned keyword without interning it.

pub fn resolve(&self, id: KwId) -> Option<&Keyword>

Resolves an id back to a keyword.

pub fn iter(&self) -> impl Iterator<Item = (KwId, &Keyword)>

Iterates every interned keyword in id order. Ids are dense from zero, so re-interning the keywords in this order reproduces the same ids.

pub fn len(&self) -> usize

Number of interned keywords.

pub fn is_empty(&self) -> bool

Whether the interner is empty.

Trait Implementations

impl Clone for KeywordInterner

fn clone(&self) -> KeywordInterner

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for KeywordInterner

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

Formats the value using the given formatter.

impl Default for KeywordInterner

fn default() -> KeywordInterner

Returns the “default value” for a type.