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