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• Mode

Mode-fix

Fixing function for mode structures.

Signature

(mode-fix x) → new-x

Arguments

x — Guard (modep x).

Returns

new-x — Type (modep new-x).

Definitions and Theorems

Function: mode-fix$inline

(defun mode-fix$inline (x)
  (declare (xargs :guard (modep x)))
  (let ((__function__ 'mode-fix))
    (declare (ignorable __function__))
    (mbe :logic
         (case (mode-kind x)
           (:regular (cons :regular (list)))
           (:break (cons :break (list)))
           (:continue (cons :continue (list)))
           (:leave (cons :leave (list))))
         :exec x)))

Theorem: modep-of-mode-fix

(defthm modep-of-mode-fix
  (b* ((new-x (mode-fix$inline x)))
    (modep new-x))
  :rule-classes :rewrite)

Theorem: mode-fix-when-modep

(defthm mode-fix-when-modep
  (implies (modep x)
           (equal (mode-fix x) x)))

Function: mode-equiv$inline

(defun mode-equiv$inline (acl2::x acl2::y)
  (declare (xargs :guard (and (modep acl2::x) (modep acl2::y))))
  (equal (mode-fix acl2::x)
         (mode-fix acl2::y)))

Theorem: mode-equiv-is-an-equivalence

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

Theorem: mode-equiv-implies-equal-mode-fix-1

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

Theorem: mode-fix-under-mode-equiv

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

Theorem: equal-of-mode-fix-1-forward-to-mode-equiv

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

Theorem: equal-of-mode-fix-2-forward-to-mode-equiv

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

Theorem: mode-equiv-of-mode-fix-1-forward

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

Theorem: mode-equiv-of-mode-fix-2-forward

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

Theorem: mode-kind$inline-of-mode-fix-x

(defthm mode-kind$inline-of-mode-fix-x
  (equal (mode-kind$inline (mode-fix x))
         (mode-kind$inline x)))

Theorem: mode-kind$inline-mode-equiv-congruence-on-x

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

Theorem: consp-of-mode-fix

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