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