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Name+value

Name+value-p

Recognizer for name+value structures.

Signature
(name+value-p x) → *

Definitions and Theorems

Function: name+value-p

(defun name+value-p (x)
  (declare (xargs :guard t))
  (let ((__function__ 'name+value-p))
    (declare (ignorable __function__))
    (and (consp x)
         (eq (car x) :name+value)
         (mbe :logic (and (alistp (cdr x))
                          (equal (strip-cars (cdr x))
                                 '(name value)))
              :exec (fty::alist-with-carsp (cdr x)
                                           '(name value)))
         (b* ((name (cdr (std::da-nth 0 (cdr x))))
              (value (cdr (std::da-nth 1 (cdr x)))))
           (and (identifierp name)
                (valuep value))))))

Theorem: consp-when-name+value-p

(defthm consp-when-name+value-p
  (implies (name+value-p x) (consp x))
  :rule-classes :compound-recognizer)