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Output-section

Output-sectionp

Recognizer for output-section structures.

Signature
(output-sectionp x) → *

Definitions and Theorems

Function: output-sectionp

(defun output-sectionp (x)
  (declare (xargs :guard t))
  (let ((__function__ 'output-sectionp))
    (declare (ignorable __function__))
    (and (consp x)
         (eq (car x) :output-section)
         (mbe :logic (and (alistp (cdr x))
                          (equal (strip-cars (cdr x)) '(item)))
              :exec (fty::alist-with-carsp (cdr x) '(item)))
         (b* ((item (cdr (std::da-nth 0 (cdr x)))))
           (output-itemp item)))))

Theorem: consp-when-output-sectionp

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