Struct PatternCache 

pub struct PatternCache { /* private fields */ }

LRU cache for compiled regex patterns.

Capacity is clamped to 1..=5000. Patterns are compiled with case-insensitive and multiline flags ((?im)).

Implementations

impl PatternCache

pub fn new(capacity: usize) -> Self

Create a new cache. Capacity is clamped to 1..=5000.

pub fn get_or_compile(&mut self, pattern: &str) -> Result<&Regex, Error>

Retrieve from cache or compile and insert. LRU eviction on overflow.

pub fn clear(&mut self)

Drop all cached entries.

pub fn len(&self) -> usize

Number of currently cached patterns.

pub fn is_empty(&self) -> bool

true if no patterns are cached.