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Stringlit

Stringlitp

Recognizer for stringlit structures.

Signature
(stringlitp x) → *

Definitions and Theorems

Function: stringlitp

(defun stringlitp (x)
  (declare (xargs :guard t))
  (let ((__function__ 'stringlitp))
    (declare (ignorable __function__))
    (and (mbe :logic (and (alistp x)
                          (equal (strip-cars x)
                                 '(prefix? schars)))
              :exec (fty::alist-with-carsp x '(prefix? schars)))
         (b* ((prefix? (cdr (std::da-nth 0 x)))
              (schars (cdr (std::da-nth 1 x))))
           (and (eprefix-optionp prefix?)
                (s-char-listp schars))))))

Theorem: consp-when-stringlitp

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