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Value-struct

Value-struct->members

Get the members field from a value-struct.

Signature
(value-struct->members x) → members
Arguments: x — Guard (valuep x).
Returns: members — Type (member-value-listp members).

This is an ordinary field accessor created by fty::defprod.

Definitions and Theorems

Function: value-struct->members$inline

(defun value-struct->members$inline (x)
 (declare (xargs :guard (valuep x)))
 (declare (xargs :guard (equal (value-kind x) :struct)))
 (let ((__function__ 'value-struct->members))
  (declare (ignorable __function__))
  (mbe
      :logic
      (b* ((x (and (equal (value-kind x) :struct) x))
           (tag (ident-fix (std::da-nth 0 (cdr x))))
           (members (member-value-list-fix (std::da-nth 1 (cdr x))))
           (flexiblep (acl2::bool-fix (std::da-nth 2 (cdr x)))))
        (if (consp members)
            members
          (list (member-value-fix :irrelevant))))
      :exec (std::da-nth 1 (cdr x)))))

Theorem: member-value-listp-of-value-struct->members

(defthm member-value-listp-of-value-struct->members
  (b* ((members (value-struct->members$inline x)))
    (member-value-listp members))
  :rule-classes :rewrite)

Theorem: value-struct->members$inline-of-value-fix-x

(defthm value-struct->members$inline-of-value-fix-x
  (equal (value-struct->members$inline (value-fix x))
         (value-struct->members$inline x)))

Theorem: value-struct->members$inline-value-equiv-congruence-on-x

(defthm value-struct->members$inline-value-equiv-congruence-on-x
  (implies (value-equiv x x-equiv)
           (equal (value-struct->members$inline x)
                  (value-struct->members$inline x-equiv)))
  :rule-classes :congruence)

Theorem: value-struct->members-when-wrong-kind

(defthm value-struct->members-when-wrong-kind
 (implies
  (not (equal (value-kind x) :struct))
  (equal
      (value-struct->members x)
      (b* ((x nil)
           (tag (ident-fix (std::da-nth 0 (cdr x))))
           (members (member-value-list-fix (std::da-nth 1 (cdr x))))
           (flexiblep (acl2::bool-fix (std::da-nth 2 (cdr x)))))
        (if (consp members)
            members
          (list (member-value-fix :irrelevant)))))))