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• Exec-outcome

Exec-outcome-fix

Fixing function for exec-outcome structures.

Signature

(exec-outcome-fix x) → new-x

Arguments

x — Guard (exec-outcome-p x).

Returns

new-x — Type (exec-outcome-p new-x).

Definitions and Theorems

Function: exec-outcome-fix$inline

(defun exec-outcome-fix$inline (x)
 (declare (xargs :guard (exec-outcome-p x)))
 (let ((__function__ 'exec-outcome-fix))
  (declare (ignorable __function__))
  (mbe
   :logic
   (case (exec-outcome-kind x)
    (:terminating (b* ((result (value-fix (std::da-nth 0 (cdr x)))))
                    (cons :terminating (list result))))
    (:error (cons :error (list)))
    (:nonterminating (cons :nonterminating (list))))
   :exec x)))

Theorem: exec-outcome-p-of-exec-outcome-fix

(defthm exec-outcome-p-of-exec-outcome-fix
  (b* ((new-x (exec-outcome-fix$inline x)))
    (exec-outcome-p new-x))
  :rule-classes :rewrite)

Theorem: exec-outcome-fix-when-exec-outcome-p

(defthm exec-outcome-fix-when-exec-outcome-p
  (implies (exec-outcome-p x)
           (equal (exec-outcome-fix x) x)))

Function: exec-outcome-equiv$inline

(defun exec-outcome-equiv$inline (acl2::x acl2::y)
  (declare (xargs :guard (and (exec-outcome-p acl2::x)
                              (exec-outcome-p acl2::y))))
  (equal (exec-outcome-fix acl2::x)
         (exec-outcome-fix acl2::y)))

Theorem: exec-outcome-equiv-is-an-equivalence

(defthm exec-outcome-equiv-is-an-equivalence
  (and (booleanp (exec-outcome-equiv x y))
       (exec-outcome-equiv x x)
       (implies (exec-outcome-equiv x y)
                (exec-outcome-equiv y x))
       (implies (and (exec-outcome-equiv x y)
                     (exec-outcome-equiv y z))
                (exec-outcome-equiv x z)))
  :rule-classes (:equivalence))

Theorem: exec-outcome-equiv-implies-equal-exec-outcome-fix-1

(defthm exec-outcome-equiv-implies-equal-exec-outcome-fix-1
  (implies (exec-outcome-equiv acl2::x x-equiv)
           (equal (exec-outcome-fix acl2::x)
                  (exec-outcome-fix x-equiv)))
  :rule-classes (:congruence))

Theorem: exec-outcome-fix-under-exec-outcome-equiv

(defthm exec-outcome-fix-under-exec-outcome-equiv
  (exec-outcome-equiv (exec-outcome-fix acl2::x)
                      acl2::x)
  :rule-classes (:rewrite :rewrite-quoted-constant))

Theorem: equal-of-exec-outcome-fix-1-forward-to-exec-outcome-equiv

(defthm equal-of-exec-outcome-fix-1-forward-to-exec-outcome-equiv
  (implies (equal (exec-outcome-fix acl2::x)
                  acl2::y)
           (exec-outcome-equiv acl2::x acl2::y))
  :rule-classes :forward-chaining)

Theorem: equal-of-exec-outcome-fix-2-forward-to-exec-outcome-equiv

(defthm equal-of-exec-outcome-fix-2-forward-to-exec-outcome-equiv
  (implies (equal acl2::x (exec-outcome-fix acl2::y))
           (exec-outcome-equiv acl2::x acl2::y))
  :rule-classes :forward-chaining)

Theorem: exec-outcome-equiv-of-exec-outcome-fix-1-forward

(defthm exec-outcome-equiv-of-exec-outcome-fix-1-forward
  (implies (exec-outcome-equiv (exec-outcome-fix acl2::x)
                               acl2::y)
           (exec-outcome-equiv acl2::x acl2::y))
  :rule-classes :forward-chaining)

Theorem: exec-outcome-equiv-of-exec-outcome-fix-2-forward

(defthm exec-outcome-equiv-of-exec-outcome-fix-2-forward
  (implies (exec-outcome-equiv acl2::x (exec-outcome-fix acl2::y))
           (exec-outcome-equiv acl2::x acl2::y))
  :rule-classes :forward-chaining)

Theorem: exec-outcome-kind$inline-of-exec-outcome-fix-x

(defthm exec-outcome-kind$inline-of-exec-outcome-fix-x
  (equal (exec-outcome-kind$inline (exec-outcome-fix x))
         (exec-outcome-kind$inline x)))

Theorem: exec-outcome-kind$inline-exec-outcome-equiv-congruence-on-x

(defthm exec-outcome-kind$inline-exec-outcome-equiv-congruence-on-x
  (implies (exec-outcome-equiv x x-equiv)
           (equal (exec-outcome-kind$inline x)
                  (exec-outcome-kind$inline x-equiv)))
  :rule-classes :congruence)

Theorem: consp-of-exec-outcome-fix

(defthm consp-of-exec-outcome-fix
  (consp (exec-outcome-fix x))
  :rule-classes :type-prescription)