Struct StringInterner 

pub struct StringInterner { /* private fields */ }

Interned string table: AtomId <-> String mapping. Atoms are interned at build time so unification compares integers, not strings.

Implementations

impl StringInterner

pub fn new() -> Self

pub fn intern(&mut self, s: &str) -> AtomId

Intern a string, returning its AtomId. If already interned, returns existing id.

pub fn resolve(&self, id: AtomId) -> &str

Resolve an AtomId back to its string. Panics if id is invalid.

pub fn try_resolve(&self, id: AtomId) -> Option<&str>

Try to resolve an AtomId, returning None if invalid.

pub fn lookup(&self, s: &str) -> Option<AtomId>

Look up a string without interning it.

pub fn len(&self) -> usize

pub fn is_empty(&self) -> bool

Trait Implementations

impl Clone for StringInterner

fn clone(&self) -> StringInterner

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for StringInterner

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

Formats the value using the given formatter.

impl Default for StringInterner

fn default() -> Self

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for StringInterner

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for StringInterner

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.