Get the unwrap field from a amb?-expr/tyname-tyname.
(amb?-expr/tyname-tyname->unwrap x) → unwrap
This is an ordinary field accessor created by fty::defprod.
Function:
(defun amb?-expr/tyname-tyname->unwrap$inline (x) (declare (xargs :guard (amb?-expr/tyname-p x))) (declare (xargs :guard (equal (amb?-expr/tyname-kind x) :tyname))) (let ((__function__ 'amb?-expr/tyname-tyname->unwrap)) (declare (ignorable __function__)) (mbe :logic (b* ((x (and (equal (amb?-expr/tyname-kind x) :tyname) x))) (tyname-fix (std::da-nth 0 (cdr x)))) :exec (std::da-nth 0 (cdr x)))))
Theorem:
(defthm tynamep-of-amb?-expr/tyname-tyname->unwrap (b* ((unwrap (amb?-expr/tyname-tyname->unwrap$inline x))) (tynamep unwrap)) :rule-classes :rewrite)
Theorem:
(defthm amb?-expr/tyname-tyname->unwrap$inline-of-amb?-expr/tyname-fix-x (equal (amb?-expr/tyname-tyname->unwrap$inline (amb?-expr/tyname-fix x)) (amb?-expr/tyname-tyname->unwrap$inline x)))
Theorem:
(defthm amb?-expr/tyname-tyname->unwrap$inline-amb?-expr/tyname-equiv-congruence-on-x (implies (amb?-expr/tyname-equiv x x-equiv) (equal (amb?-expr/tyname-tyname->unwrap$inline x) (amb?-expr/tyname-tyname->unwrap$inline x-equiv))) :rule-classes :congruence)
Theorem:
(defthm amb?-expr/tyname-tyname->unwrap-when-wrong-kind (implies (not (equal (amb?-expr/tyname-kind x) :tyname)) (equal (amb?-expr/tyname-tyname->unwrap x) (tyname-fix nil))))