Struct NameTable 

pub struct NameTable { /* private fields */ }

A simple string-interning table backed by a Vec.

Useful for giving cheap usize IDs to string names during elaboration.

Implementations

impl NameTable

pub fn new() -> Self

Create an empty table.

pub fn intern(&mut self, name: &str) -> usize

Intern name and return its ID. If already present, returns the existing ID without inserting a duplicate.

pub fn lookup(&self, id: usize) -> Option<&str>

Look up the string for an ID.

pub fn len(&self) -> usize

Return the number of interned names.

pub fn is_empty(&self) -> bool

Return true if the table is empty.

pub fn clear(&mut self)

Clear all entries.

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

Return an iterator over (id, name) pairs.

Trait Implementations

impl Debug for NameTable

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

Formats the value using the given formatter.

impl Default for NameTable

fn default() -> NameTable

Returns the “default value” for a type.