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Screen-message-error

Screen-message-error->values

Get the values field from a screen-message-error.

Signature
(screen-message-error->values x) → values
Arguments: x — Guard (screen-messagep x).
Returns: values — Type (value-listp values).

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

Definitions and Theorems

Function: screen-message-error->values$inline

(defun screen-message-error->values$inline (x)
  (declare (xargs :guard (screen-messagep x)))
  (declare (xargs :guard (equal (screen-message-kind x) :error)))
  (let ((__function__ 'screen-message-error->values))
    (declare (ignorable __function__))
    (mbe :logic
         (b* ((x (and (equal (screen-message-kind x) :error)
                      x)))
           (value-list-fix (std::da-nth 1 (cdr x))))
         :exec (std::da-nth 1 (cdr x)))))

Theorem: value-listp-of-screen-message-error->values

(defthm value-listp-of-screen-message-error->values
  (b* ((values (screen-message-error->values$inline x)))
    (value-listp values))
  :rule-classes :rewrite)

Theorem: screen-message-error->values$inline-of-screen-message-fix-x

(defthm screen-message-error->values$inline-of-screen-message-fix-x
 (equal (screen-message-error->values$inline (screen-message-fix x))
        (screen-message-error->values$inline x)))

Theorem: screen-message-error->values$inline-screen-message-equiv-congruence-on-x

(defthm
 screen-message-error->values$inline-screen-message-equiv-congruence-on-x
 (implies (screen-message-equiv x x-equiv)
          (equal (screen-message-error->values$inline x)
                 (screen-message-error->values$inline x-equiv)))
 :rule-classes :congruence)

Theorem: screen-message-error->values-when-wrong-kind

(defthm screen-message-error->values-when-wrong-kind
  (implies (not (equal (screen-message-kind x) :error))
           (equal (screen-message-error->values x)
                  (value-list-fix nil))))