Struct SelectorCache 

pub struct SelectorCache { /* private fields */ }

Self-healing selector cache.

Stores mappings from natural language descriptions to CSS selectors that successfully matched elements. Supports LRU eviction.

Self-Healing Flow

1. User requests action like “click the login button”
2. Cache lookup: if cached selector for “login button” exists, try it
3. If selector works → action succeeds, update cache timestamp
4. If selector fails → invalidate entry, re-query LLM for new selector
5. Store new selector in cache for future use

Implementations

impl SelectorCache

pub fn new() -> Self

Create a new selector cache with default capacity.

pub fn with_capacity(max_entries: usize) -> Self

Create with specified capacity.

pub fn get(&mut self, description: &str, domain: Option<&str>) -> Option<&str>

Look up a cached selector for an element description.

Optionally filter by domain for site-specific selectors.

pub fn record_success( &mut self, description: &str, selector: &str, domain: Option<&str>, )

Record a successful selector use.

pub fn record_failure(&mut self, description: &str)

Record a selector failure and potentially invalidate.

After 2 consecutive failures, the entry is removed.

pub fn invalidate(&mut self, description: &str)

Invalidate (remove) a cache entry.

pub fn clear(&mut self)

Clear all cache entries.

pub fn stats(&self) -> CacheStats

Get cache statistics: (hits, misses, entry_count).

pub fn len(&self) -> usize

Get number of entries.

pub fn is_empty(&self) -> bool

Check if cache is empty.

pub fn selectors_for_domain(&self, domain: &str) -> Vec<(&str, &str)>

Get all cached selectors for a domain.

pub fn export(&self) -> Vec<SelectorCacheEntry>

Export cache entries (for persistence).

pub fn import( &mut self, entries: impl IntoIterator<Item = (String, SelectorCacheEntry)>, )

Import cache entries (from persistence).

Trait Implementations

impl Clone for SelectorCache

fn clone(&self) -> SelectorCache

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for SelectorCache

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

Formats the value using the given formatter.

impl Default for SelectorCache

fn default() -> Self

Returns the “default value” for a type.