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Fhg-args

Fhg-args-p

Recognizer for fhg-args structures.

Signature
(fhg-args-p x) → *

Definitions and Theorems

Function: fhg-args-p

(defun fhg-args-p (x)
 (declare (xargs :guard t))
 (let ((acl2::__function__ 'fhg-args-p))
  (declare (ignorable acl2::__function__))
  (and
   (mbe
       :logic
       (and (alistp x)
            (equal (strip-cars x)
                   '(term-lst fn-lst fn-returns-hint-acc
                              fn-more-returns-hint-acc lambda-acc)))
       :exec (fty::alist-with-carsp
                  x
                  '(term-lst fn-lst fn-returns-hint-acc
                             fn-more-returns-hint-acc lambda-acc)))
   (b* ((term-lst (cdr (std::da-nth 0 x)))
        (fn-lst (cdr (std::da-nth 1 x)))
        (fn-returns-hint-acc (cdr (std::da-nth 2 x)))
        (fn-more-returns-hint-acc (cdr (std::da-nth 3 x)))
        (lambda-acc (cdr (std::da-nth 4 x))))
     (and (pseudo-term-listp term-lst)
          (func-alistp fn-lst)
          (hint-pair-listp fn-returns-hint-acc)
          (hint-pair-listp fn-more-returns-hint-acc)
          (lambda-binding-listp lambda-acc))))))

Theorem: consp-when-fhg-args-p

(defthm consp-when-fhg-args-p
  (implies (fhg-args-p x) (consp x))
  :rule-classes :compound-recognizer)