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Vl-rhs

Vl-rhs-p

Recognizer for vl-rhs structures.

Signature
(vl-rhs-p x) → *

Definitions and Theorems

Function: vl-rhs-p

(defun vl-rhs-p (x)
  (declare (xargs :guard t))
  (let ((__function__ 'vl-rhs-p))
    (declare (ignorable __function__))
    (and (consp x)
         (cond ((or (atom x) (eq (car x) :vl-rhsexpr))
                (and (true-listp (cdr x))
                     (eql (len (cdr x)) 1)
                     (b* ((guts (std::da-nth 0 (cdr x))))
                       (vl-expr-p guts))))
               (t (and (eq (car x) :vl-rhsnew)
                       (and (true-listp (cdr x))
                            (eql (len (cdr x)) 2))
                       (b* ((arrsize (std::da-nth 0 (cdr x)))
                            (args (std::da-nth 1 (cdr x))))
                         (and (vl-maybe-expr-p arrsize)
                              (vl-exprlist-p args)))))))))

Theorem: consp-when-vl-rhs-p

(defthm consp-when-vl-rhs-p
  (implies (vl-rhs-p x) (consp x))
  :rule-classes :compound-recognizer)