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Prose-val

Prose-val-p

Recognizer for prose-val structures.

Signature
(prose-val-p x) → *

Definitions and Theorems

Function: prose-val-p

(defun prose-val-p (x)
  (declare (xargs :guard t))
  (let ((__function__ 'prose-val-p))
    (declare (ignorable __function__))
    (and (consp x)
         (eq (car x) :prose)
         (true-listp (cdr x))
         (eql (len (cdr x)) 1)
         (b* ((get (std::da-nth 0 (cdr x))))
           (common-lisp::stringp get)))))

Theorem: consp-when-prose-val-p

(defthm consp-when-prose-val-p
  (implies (prose-val-p x) (consp x))
  :rule-classes :compound-recognizer)