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Closure

Closurep

Recognizer for closure structures.

Signature
(closurep x) → *

Definitions and Theorems

Function: closurep

(defun closurep (x)
 (declare (xargs :guard t))
 (let ((__function__ 'closurep))
  (declare (ignorable __function__))
  (and
   (consp x)
   (eq (car x) :closure)
   (mbe :logic (and (alistp (cdr x))
                    (equal (strip-cars (cdr x))
                           '(name inputs instrs outputs)))
        :exec (fty::alist-with-carsp (cdr x)
                                     '(name inputs instrs outputs)))
   (b* ((name (cdr (std::da-nth 0 (cdr x))))
        (inputs (cdr (std::da-nth 1 (cdr x))))
        (instrs (cdr (std::da-nth 2 (cdr x))))
        (outputs (cdr (std::da-nth 3 (cdr x)))))
     (and (identifierp name)
          (closure-input-listp inputs)
          (instruction-listp instrs)
          (closure-output-listp outputs))))))

Theorem: consp-when-closurep

(defthm consp-when-closurep
  (implies (closurep x) (consp x))
  :rule-classes :compound-recognizer)