Struct InternPool 

pub struct InternPool { /* private fields */ }

The raw storage for interned strings.

• strings is append-only; indices are stable for the lifetime of the pool.
• map maps each string’s content to its index for O(1) deduplication.
• static_ptrs caches the &'static str obtained by leaking each string exactly once, so subsequent resolve calls are O(1) slice lookups.

Implementations

impl InternPool

pub fn new() -> Self

Creates a new, empty InternPool.

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

Interns s, returning a stable index.

If s is already present the existing index is returned without any allocation. Otherwise a new String is pushed and indexed.

pub fn resolve_str(&mut self, id: u32) -> Option<&'static str>

Resolves index id to a &'static str.

The string is leaked into a Box<str> on the first call for id and the resulting pointer is cached. Subsequent calls for the same id return the cached pointer without any allocation.

Returns None if id is out of range.

pub fn len(&self) -> usize

Returns the number of distinct strings stored.

pub fn is_empty(&self) -> bool

Returns true when no strings have been interned.

pub fn total_bytes(&self) -> usize

Returns the total byte count of all interned strings.

pub fn stats(&self) -> InternPoolStats

Returns a InternPoolStats snapshot.

Trait Implementations

impl Default for InternPool

fn default() -> Self

Returns the “default value” for a type.