Module expr_eval 

Expression evaluation helper functions.

This module extracts high-complexity expression evaluation logic from the main executor to reduce cognitive complexity and improve maintainability.

Functions

cypher_eq

Deep equality comparison with Cypher-compliant numeric coercion and 3-valued logic. Returns Some(bool) for True/False, and None for Null/Unknown.

eval_binary_op

Evaluate a binary operation on two already-evaluated values.

eval_btic_function

Evaluate BTIC accessor and predicate functions.

eval_in_op

Evaluate IN operator.

eval_scalar_function

Evaluate a built-in scalar function.

eval_split

eval_vector_distance

Evaluate vector distance between two vectors.

eval_vector_similarity

Evaluate vector similarity between two vectors (cosine similarity).

is_btic_function

Check if an uppercase function name is a known BTIC scalar function.

is_scalar_function

Check if a function name is a known scalar function (not aggregate).

temporal_from_human_readable_str

Parse a human-readable ISO 8601 temporal string (e.g. "12:35:15+05:00", "2024-01-15") into a TemporalValue by classifying and evaluating it.

temporal_from_map_wrapper

Try to interpret a map as a temporal value.

temporal_from_value

Extract a TemporalValue from any Value variant that can represent one.