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Vl-collect-ieqv-strings

Vl-collect-ieqv-strings-aux

Signature
(vl-collect-ieqv-strings-aux a x) → equiv-strs
Arguments: a — Already lowercased.
Guard (stringp a).; x — Not already lowercased.
Guard (string-listp x).
Returns: equiv-strs — Type (string-listp equiv-strs), given (string-listp x).

Linear in the length of x.

Definitions and Theorems

Function: vl-collect-ieqv-strings-aux

(defun vl-collect-ieqv-strings-aux (a x)
  (declare (xargs :guard (and (stringp a) (string-listp x))))
  (let ((__function__ 'vl-collect-ieqv-strings-aux))
    (declare (ignorable __function__))
    (cond ((atom x) nil)
          ((equal a (str::downcase-string (car x)))
           (cons (car x)
                 (vl-collect-ieqv-strings-aux a (cdr x))))
          (t (vl-collect-ieqv-strings-aux a (cdr x))))))

Theorem: string-listp-of-vl-collect-ieqv-strings-aux

(defthm string-listp-of-vl-collect-ieqv-strings-aux
  (implies (string-listp x)
           (b* ((equiv-strs (vl-collect-ieqv-strings-aux a x)))
             (string-listp equiv-strs)))
  :rule-classes :rewrite)