Struct StringInterner 

pub struct StringInterner { /* private fields */ }

String interner for reducing memory usage of repeated strings.

Domain and predicate names are often repeated throughout the symbol table. This interner ensures each unique string is stored only once in memory.

Example

use tensorlogic_adapters::StringInterner;

let mut interner = StringInterner::new();
let id1 = interner.intern("Person");
let id2 = interner.intern("Person");
assert_eq!(id1, id2); // Same string gets same ID

assert_eq!(interner.resolve(id1), Some("Person"));

Implementations

impl StringInterner

pub fn new() -> Self

Create a new string interner.

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

Intern a string and return its unique ID.

If the string already exists, returns the existing ID. Otherwise, allocates a new ID and stores the string.

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

Resolve an ID back to its string.

pub fn len(&self) -> usize

Get the number of unique strings interned.

pub fn is_empty(&self) -> bool

Check if the interner is empty.

pub fn clear(&mut self)

Clear all interned strings.

pub fn memory_usage(&self) -> MemoryStats

Get memory usage statistics.

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() -> StringInterner

Returns the “default value” for a type.