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Svex-context

Svex-context-fix

Fixing function for svex-context structures.

Signature
(svex-context-fix x) → new-x
Arguments: x — Guard (svex-context-p x).
Returns: new-x — Type (svex-context-p new-x).

Definitions and Theorems

Function: svex-context-fix$inline

(defun svex-context-fix$inline (x)
 (declare (xargs :guard (svex-context-p x)))
 (let ((__function__ 'svex-context-fix))
  (declare (ignorable __function__))
  (mbe
   :logic
   (case (svex-context-kind x)
    (:call
     (b*
      ((argnum (nfix (std::prod-car (cdr x))))
       (fn (fnsym-fix (std::prod-car (std::prod-cdr (cdr x)))))
       (args
            (svexlist-fix (std::prod-cdr (std::prod-cdr (cdr x))))))
      (cons
           :call (std::prod-cons argnum (std::prod-cons fn args)))))
    (:top (cons :top (list))))
   :exec x)))

Theorem: svex-context-p-of-svex-context-fix

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

Theorem: svex-context-fix-when-svex-context-p

(defthm svex-context-fix-when-svex-context-p
  (implies (svex-context-p x)
           (equal (svex-context-fix x) x)))

Function: svex-context-equiv$inline

(defun svex-context-equiv$inline (x y)
  (declare (xargs :guard (and (svex-context-p x)
                              (svex-context-p y))))
  (equal (svex-context-fix x)
         (svex-context-fix y)))

Theorem: svex-context-equiv-is-an-equivalence

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

Theorem: svex-context-equiv-implies-equal-svex-context-fix-1

(defthm svex-context-equiv-implies-equal-svex-context-fix-1
  (implies (svex-context-equiv x x-equiv)
           (equal (svex-context-fix x)
                  (svex-context-fix x-equiv)))
  :rule-classes (:congruence))

Theorem: svex-context-fix-under-svex-context-equiv

(defthm svex-context-fix-under-svex-context-equiv
  (svex-context-equiv (svex-context-fix x)
                      x)
  :rule-classes (:rewrite :rewrite-quoted-constant))

Theorem: equal-of-svex-context-fix-1-forward-to-svex-context-equiv

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

Theorem: equal-of-svex-context-fix-2-forward-to-svex-context-equiv

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

Theorem: svex-context-equiv-of-svex-context-fix-1-forward

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

Theorem: svex-context-equiv-of-svex-context-fix-2-forward

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

Theorem: svex-context-kind$inline-of-svex-context-fix-x

(defthm svex-context-kind$inline-of-svex-context-fix-x
  (equal (svex-context-kind$inline (svex-context-fix x))
         (svex-context-kind$inline x)))

Theorem: svex-context-kind$inline-svex-context-equiv-congruence-on-x

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

Theorem: consp-of-svex-context-fix

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