Macro collect_confident 

macro_rules! collect_confident {
    ($eval_result:expr, $collection:expr) => { ... };
    ($eval_result:expr, $collection:expr, $transform:expr) => { ... };
}

Collects an evaluation result if it’s confident, otherwise returns None.

This macro simplifies the common pattern of checking if an evaluation is confident and either collecting the value or early-returning from the function.

Usage

// Basic usage - pushes value if confident, returns None if not
for elem in arr_path.elems.iter().flatten() {
  let elem_value = evaluate(&elem.expr, traversal_state, &state.functions);
  collect_confident!(elem_value, arr);
}

// With transformation - applies transform before pushing
collect_confident!(elem_value, collection, |v| transform(v));

Arguments

• $eval_result: An evaluation result with a confident field and optional value
• $collection: The collection to push values into
• $transform (optional): A transformation function to apply to the value before pushing