Get the tags field from a funtab+vartab+tagenv.
(funtab+vartab+tagenv->tags x) → tags
This is an ordinary field accessor created by fty::defprod.
Function:
(defun funtab+vartab+tagenv->tags$inline (x) (declare (xargs :guard (funtab+vartab+tagenv-p x))) (declare (xargs :guard t)) (let ((__function__ 'funtab+vartab+tagenv->tags)) (declare (ignorable __function__)) (mbe :logic (b* ((x (and t x))) (tag-env-fix (cdr (std::da-nth 2 x)))) :exec (cdr (std::da-nth 2 x)))))
Theorem:
(defthm tag-envp-of-funtab+vartab+tagenv->tags (b* ((tags (funtab+vartab+tagenv->tags$inline x))) (tag-envp tags)) :rule-classes :rewrite)
Theorem:
(defthm funtab+vartab+tagenv->tags$inline-of-funtab+vartab+tagenv-fix-x (equal (funtab+vartab+tagenv->tags$inline (funtab+vartab+tagenv-fix x)) (funtab+vartab+tagenv->tags$inline x)))
Theorem:
(defthm funtab+vartab+tagenv->tags$inline-funtab+vartab+tagenv-equiv-congruence-on-x (implies (funtab+vartab+tagenv-equiv x x-equiv) (equal (funtab+vartab+tagenv->tags$inline x) (funtab+vartab+tagenv->tags$inline x-equiv))) :rule-classes :congruence)