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Interface-type

Interface-typep

Recognizer for interface-type structures.

Signature
(interface-typep x) → *

Definitions and Theorems

Function: interface-typep

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

Theorem: consp-when-interface-typep

(defthm consp-when-interface-typep
  (implies (interface-typep x) (consp x))
  :rule-classes :compound-recognizer)