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Decl-statassert

Decl-statassert->statassert

Get the statassert field from a decl-statassert.

Signature
(decl-statassert->statassert x) → statassert
Arguments: x — Guard (declp x).
Returns: statassert — Type (statassertp statassert).

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

Definitions and Theorems

Function: decl-statassert->statassert$inline

(defun decl-statassert->statassert$inline (x)
  (declare (xargs :guard (declp x)))
  (declare (xargs :guard (equal (decl-kind x) :statassert)))
  (mbe :logic
       (b* ((x (and (equal (decl-kind x) :statassert)
                    x)))
         (statassert-fix (cdr x)))
       :exec (cdr x)))

Theorem: statassertp-of-decl-statassert->statassert

(defthm statassertp-of-decl-statassert->statassert
  (b* ((statassert (decl-statassert->statassert$inline x)))
    (statassertp statassert))
  :rule-classes :rewrite)

Theorem: decl-statassert->statassert$inline-of-decl-fix-x

(defthm decl-statassert->statassert$inline-of-decl-fix-x
  (equal (decl-statassert->statassert$inline (decl-fix x))
         (decl-statassert->statassert$inline x)))

Theorem: decl-statassert->statassert$inline-decl-equiv-congruence-on-x

(defthm
      decl-statassert->statassert$inline-decl-equiv-congruence-on-x
  (implies (decl-equiv x x-equiv)
           (equal (decl-statassert->statassert$inline x)
                  (decl-statassert->statassert$inline x-equiv)))
  :rule-classes :congruence)

Theorem: decl-statassert->statassert-when-wrong-kind

(defthm decl-statassert->statassert-when-wrong-kind
  (implies (not (equal (decl-kind x) :statassert))
           (equal (decl-statassert->statassert x)
                  (statassert-fix nil))))