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Design

Design-p

Recognizer for design structures.

Signature
(design-p x) → *

Definitions and Theorems

Function: design-p

(defun design-p (x)
  (declare (xargs :guard t))
  (let ((__function__ 'design-p))
    (declare (ignorable __function__))
    (and (mbe :logic (and (alistp x)
                          (equal (strip-cars x) '(modalist top)))
              :exec (fty::alist-with-carsp x '(modalist top)))
         (b* ((modalist (cdr (std::da-nth 0 x)))
              (top (cdr (std::da-nth 1 x))))
           (and (modalist-p modalist)
                (modname-p top))))))

Theorem: consp-when-design-p

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