Allow to detect which element is matched inside OR

[alexey-martynov]

We have dynamically generated contents of OR rule. For proper functioning we need to know inside :DESTRUCTURE what symbol inside OR is matched.

[scymtym]

Is the following solution feasible for you?

(defrule alternative-1 
  ...
  (:destructure (...)
    (list 1 ACTUAL-RESULT)))

(defrule alternative-2 
  ...
  (:destructure (...)
    (list 2 ACTUAL-RESULT)))

(defrule dynamically-generated
  (or alternative-1 alternative-2 ...)
  (:destructure (alternative &rest result)
    (case alternative
      (1 ...)
      (2 ...)
      ...)))

[alexey-martynov]

No, it can't solve my problem because contents of the OR statement are updated at runtime and contents of the added rules are came from client part. I don't like an idea to parse supplied contents and update them.

Also, problem was introduced by the way of interpretation of the rule symbol if DEFRULE. I can't supply dynamically generated symbol as rule symbol because it simply inserted to the statement.

[alexey-martynov]

:AROUND rule has solved my problem.