Struct StringInternTable 

pub struct StringInternTable { /* private fields */ }

Intern table for string values used in Ring 0 predicates.

Built at filter compilation time (Ring 2), immutable during evaluation. Shared across all predicates for a subscription.

Implementations

impl StringInternTable

pub fn new() -> Self

Creates a new empty intern table.

pub fn intern(&mut self, s: &str) -> u32

Interns a string, returning its index.

Returns the existing index if the string was already interned.

pub fn resolve(&self, idx: u32) -> Option<&str>

Looks up a string by its intern index.

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.

Trait Implementations

impl Clone for StringInternTable

fn clone(&self) -> StringInternTable

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for StringInternTable

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

Formats the value using the given formatter.

impl Default for StringInternTable

fn default() -> Self

Returns the “default value” for a type.