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Port-expressions

Vl-portexpr-p

Recognizes all expressions that can validly occur in a (non-blank) port.

Signature
(vl-portexpr-p x) → okp
Arguments: x — Guard (vl-expr-p x).
Returns: okp — Type (booleanp okp).

Definitions and Theorems

Function: vl-portexpr-p

(defun vl-portexpr-p (x)
  (declare (xargs :guard (vl-expr-p x)))
  (let ((__function__ 'vl-portexpr-p))
    (declare (ignorable __function__))
    (b* (((when (vl-atomicportexpr-p x)) t)
         ((when (vl-fast-atom-p x)) nil)
         ((vl-nonatom x)))
      (and (eq x.op :vl-concat)
           (vl-atomicportexprlist-p x.args)))))

Theorem: booleanp-of-vl-portexpr-p

(defthm booleanp-of-vl-portexpr-p
  (b* ((okp (vl-portexpr-p x)))
    (booleanp okp))
  :rule-classes :type-prescription)

Theorem: vl-portexpr-p-of-vl-expr-fix-x

(defthm vl-portexpr-p-of-vl-expr-fix-x
  (equal (vl-portexpr-p (vl-expr-fix x))
         (vl-portexpr-p x)))

Theorem: vl-portexpr-p-vl-expr-equiv-congruence-on-x

(defthm vl-portexpr-p-vl-expr-equiv-congruence-on-x
  (implies (vl-expr-equiv x x-equiv)
           (equal (vl-portexpr-p x)
                  (vl-portexpr-p x-equiv)))
  :rule-classes :congruence)