Struct Engine 

pub struct Engine { /* private fields */ }

Shared, thread-safe query engine.

Internally a Mutex<VM>; reads serialise but compilation and caching happen once per expression, so the lock is held only for the duration of an execute call. For single-threaded use prefer [Jetro], which keeps a dedicated VM per thread.

Implementations

impl Engine

pub fn new() -> Arc<Self>

pub fn with_capacity(compile_cap: usize, path_cap: usize) -> Arc<Self>

pub fn with_methods(registry: Arc<MethodRegistry>) -> Arc<Self>

pub fn run(&self, expr: &str, doc: &Value) -> Result<Value>

Parse, compile (cached), and execute expr against doc.

pub fn register(&self, name: impl Into<String>, method: impl Method + 'static)

pub fn set_pass_config(&self, config: PassConfig)

pub fn pass_config(&self) -> PassConfig