Struct LookupState 

pub struct LookupState { /* private fields */ }

Per-render state for the lookup() function.

Holds:

• the cluster reader (Arc-shared, used by the closure registered on the env)
• a per-render cache (so duplicate lookups in the same render hit the cluster once)
• aggregated warnings (deduped by kind+name) for the caller to surface

Cloning is cheap (all internals are Arc), and clones share the same cache + warnings — exactly what we want when the closure captures it.

Implementations

impl LookupState

pub fn new(reader: Arc<dyn ClusterReader>) -> Self

Build a new state from a reader.

pub fn register(&self, env: &mut Environment<'static>)

Register the lookup function on the given environment.

This replaces any pre-existing lookup registration (the no-op stub from functions::lookup).

pub fn take_warnings(&self) -> Vec<String>

Take the accumulated warnings, leaving the state empty. Caller is responsible for surfacing these (e.g. via tracing or the render report).

Trait Implementations

impl Clone for LookupState

fn clone(&self) -> LookupState

Returns a duplicate of the value.

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

Performs copy-assignment from source.