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Input-section

Input-sectionp

Recognizer for input-section structures.

Signature
(input-sectionp x) → *

Definitions and Theorems

Function: input-sectionp

(defun input-sectionp (x)
  (declare (xargs :guard t))
  (let ((__function__ 'input-sectionp))
    (declare (ignorable __function__))
    (and (consp x)
         (eq (car x) :input-section)
         (mbe :logic (and (alistp (cdr x))
                          (equal (strip-cars (cdr x))
                                 '(title items)))
              :exec (fty::alist-with-carsp (cdr x)
                                           '(title items)))
         (b* ((title (cdr (std::da-nth 0 (cdr x))))
              (items (cdr (std::da-nth 1 (cdr x)))))
           (and (input-titlep title)
                (input-item-listp items))))))

Theorem: consp-when-input-sectionp

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