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• Parser-states

Parstate->chars-unread

Signature

(parstate->chars-unread parstate) → chars-unread

Returns

chars-unread — Type (natp chars-unread).

Definitions and Theorems

Function: parstate->chars-unread$inline

(defun parstate->chars-unread$inline (parstate)
  (declare (xargs :stobjs (parstate)))
  (declare (xargs :guard t))
  (mbe :logic
       (if (parstatep parstate)
           (raw-parstate->chars-unread parstate)
         0)
       :exec (raw-parstate->chars-unread parstate)))

Theorem: natp-of-parstate->chars-unread

(defthm natp-of-parstate->chars-unread
  (b* ((chars-unread (parstate->chars-unread$inline parstate)))
    (natp chars-unread))
  :rule-classes (:rewrite :type-prescription))