Struct LocalEvaluator 

pub struct LocalEvaluator { /* private fields */ }

Evaluates feature flags using locally cached definitions.

The evaluator reads from a FlagCache to determine flag values without making network requests. Supports cohort membership checks and flag dependencies through the evaluation context.

Implementations

impl LocalEvaluator

pub fn new(cache: FlagCache) -> Self

pub fn cache(&self) -> &FlagCache

Access the underlying flag cache (e.g. to read group type mappings).

pub fn evaluate_flag( &self, key: &str, distinct_id: &str, person_properties: &HashMap<String, Value>, groups: &HashMap<String, String>, group_properties: &HashMap<String, HashMap<String, Value>>, ) -> Result<Option<FlagValue>, InconclusiveMatchError>

Evaluate a feature flag locally with full context support.

Supports cohort membership checks, flag dependency evaluation, and group / mixed-targeting flags. groups and group_properties are only consulted when the flag (or one of its conditions) targets a group via aggregation_group_type_index; pass empty maps for person-targeted flags.

pub fn evaluate_flag_simple( &self, key: &str, distinct_id: &str, person_properties: &HashMap<String, Value>, groups: &HashMap<String, String>, group_properties: &HashMap<String, HashMap<String, Value>>, ) -> Result<Option<FlagValue>, InconclusiveMatchError>

Evaluate a feature flag locally (simple version without cohort/flag dependency support). Use this when you know the flag doesn’t have cohort or flag dependency conditions.

pub fn evaluate_all_flags( &self, distinct_id: &str, person_properties: &HashMap<String, Value>, groups: &HashMap<String, String>, group_properties: &HashMap<String, HashMap<String, Value>>, ) -> HashMap<String, Result<FlagValue, InconclusiveMatchError>>

Get all flags and evaluate them with full context support.

Trait Implementations

impl Clone for LocalEvaluator

fn clone(&self) -> LocalEvaluator

Returns a duplicate of the value.

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

Performs copy-assignment from source.