Struct StringInterner 

pub struct StringInterner<'src> { /* private fields */ }

String interner for query compilation.

Interns strings during the analysis phase, then emits them as a contiguous byte pool with StringRef entries pointing into it.

Implementations

impl<'src> StringInterner<'src>

pub fn new() -> Self

Creates a new empty interner.

pub fn intern(&mut self, s: &'src str) -> StringId

Interns a string, returning its ID.

If the string was previously interned, returns the existing ID.

pub fn get(&self, s: &str) -> Option<StringId>

Returns the ID of a previously interned string, or None.

pub fn resolve(&self, id: StringId) -> &'src str

Returns the string for a given ID.

Panics

Panics if the ID is out of range.

pub fn len(&self) -> usize

Returns the number of interned strings.

pub fn is_empty(&self) -> bool

Returns true if no strings have been interned.

pub fn iter(&self) -> impl Iterator<Item = (StringId, &'src str)> + '_

Returns an iterator over (id, string) pairs in ID order.

pub fn total_bytes(&self) -> usize

Returns the total byte size needed for all strings.

pub fn into_strings(self) -> Vec<&'src str>

Consumes the interner and returns strings in ID order.

Trait Implementations

impl<'src> Debug for StringInterner<'src>

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

Formats the value using the given formatter.

impl<'src> Default for StringInterner<'src>

fn default() -> StringInterner<'src>

Returns the “default value” for a type.