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Soutcome

Soutcomep

Recognizer for soutcome structures.

Signature
(soutcomep x) → *

Definitions and Theorems

Function: soutcomep

(defun soutcomep (x)
  (declare (xargs :guard t))
  (let ((__function__ 'soutcomep))
    (declare (ignorable __function__))
    (and (consp x)
         (eq (car x) :soutcome)
         (mbe :logic (and (alistp (cdr x))
                          (equal (strip-cars (cdr x))
                                 '(cstate mode)))
              :exec (fty::alist-with-carsp (cdr x)
                                           '(cstate mode)))
         (b* ((cstate (cdr (std::da-nth 0 (cdr x))))
              (mode (cdr (std::da-nth 1 (cdr x)))))
           (and (cstatep cstate) (modep mode))))))

Theorem: consp-when-soutcomep

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