Struct ReducerRegistry 

pub struct ReducerRegistry { /* private fields */ }

Reducer 注册表 — 管理每个 key 的合并策略。

Implementations

impl ReducerRegistry

pub fn new() -> Self

pub fn register(&mut self, key: &str, reducer: Reducer)

pub fn register_custom( &mut self, key: &str, f: impl Fn(&Value, &Value) -> Result<Value, String> + Send + Sync + 'static, )

pub fn get(&self, key: &str) -> &Reducer

pub fn apply_custom( &self, key: &str, existing: &Value, new_val: &Value, ) -> Result<Option<Value>, String>

pub fn apply_delta( &self, state: &mut HashMap<String, Value>, delta: &StateDelta, ) -> Result<(), StateError>

pub fn merge_deltas( &self, state: &mut HashMap<String, Value>, deltas: &[StateDelta], ) -> Result<(), StateError>

Trait Implementations

impl Debug for ReducerRegistry

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

Formats the value using the given formatter.

impl Default for ReducerRegistry

fn default() -> ReducerRegistry

Returns the “default value” for a type.