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Declor/absdeclor

Declor/absdeclor-p

Recognizer for declor/absdeclor structures.

Signature
(declor/absdeclor-p x) → *

Definitions and Theorems

Function: declor/absdeclor-p

(defun declor/absdeclor-p (x)
  (declare (xargs :guard t))
  (and (consp x)
       (cond ((or (atom x) (eq (car x) :declor))
              (and (b* ((declor (cdr x)))
                     (declorp declor))))
             (t (and (eq (car x) :absdeclor)
                     (and)
                     (b* ((absdeclor (cdr x)))
                       (absdeclorp absdeclor)))))))

Theorem: consp-when-declor/absdeclor-p

(defthm consp-when-declor/absdeclor-p
  (implies (declor/absdeclor-p x)
           (consp x))
  :rule-classes :compound-recognizer)