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• Maybe-string-result-ok

Maybe-string-result-ok->get

Get the get field from a maybe-string-result-ok.

Signature

(maybe-string-result-ok->get x) → get

Arguments

x — Guard (maybe-string-resultp x).

Returns

get — Type (maybe-stringp get).

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

Definitions and Theorems

Function: maybe-string-result-ok->get$inline

(defun maybe-string-result-ok->get$inline (x)
  (declare (xargs :guard (maybe-string-resultp x)))
  (declare (xargs :guard (equal (maybe-string-result-kind x)
                                :ok)))
  (let ((__function__ 'maybe-string-result-ok->get))
    (declare (ignorable __function__))
    (mbe :logic
         (b* ((x (and (equal (maybe-string-result-kind x) :ok)
                      x)))
           (maybe-string-fix x))
         :exec x)))

Theorem: maybe-stringp-of-maybe-string-result-ok->get

(defthm maybe-stringp-of-maybe-string-result-ok->get
  (b* ((get (maybe-string-result-ok->get$inline x)))
    (maybe-stringp get))
  :rule-classes :rewrite)

Theorem: maybe-string-result-ok->get$inline-of-maybe-string-result-fix-x

(defthm
    maybe-string-result-ok->get$inline-of-maybe-string-result-fix-x
 (equal
    (maybe-string-result-ok->get$inline (maybe-string-result-fix x))
    (maybe-string-result-ok->get$inline x)))

Theorem: maybe-string-result-ok->get$inline-maybe-string-result-equiv-congruence-on-x

(defthm
 maybe-string-result-ok->get$inline-maybe-string-result-equiv-congruence-on-x
 (implies (maybe-string-result-equiv x x-equiv)
          (equal (maybe-string-result-ok->get$inline x)
                 (maybe-string-result-ok->get$inline x-equiv)))
 :rule-classes :congruence)

Theorem: maybe-string-result-ok->get-when-wrong-kind

(defthm maybe-string-result-ok->get-when-wrong-kind
  (implies (not (equal (maybe-string-result-kind x)
                       :ok))
           (equal (maybe-string-result-ok->get x)
                  (maybe-string-fix nil))))