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        • *url-encode-array*
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• Url-encoding

Url-encode-chars-aux

URL encode a list of characters onto an accumulator in reverse order.

Signature

(url-encode-chars-aux chars acc) → encoded

Arguments

chars — Guard (character-listp chars).

Returns

encoded — Type (character-listp encoded), given (character-listp acc).

Definitions and Theorems

Function: url-encode-chars-aux

(defun url-encode-chars-aux (chars acc)
  (declare (xargs :guard (character-listp chars)))
  (let ((acl2::__function__ 'url-encode-chars-aux))
    (declare (ignorable acl2::__function__))
    (if (atom chars)
        acc
      (url-encode-chars-aux
           (cdr chars)
           (revappend (fast-url-encode-char (car chars))
                      acc)))))

Theorem: character-listp-of-url-encode-chars-aux

(defthm character-listp-of-url-encode-chars-aux
  (implies (character-listp acc)
           (b* ((encoded (url-encode-chars-aux chars acc)))
             (character-listp encoded)))
  :rule-classes :rewrite)

Theorem: true-listp-of-url-encode-chars-aux

(defthm true-listp-of-url-encode-chars-aux
  (equal (true-listp (url-encode-chars-aux x acc))
         (true-listp acc)))

Theorem: url-encode-chars-aux-of-make-character-list-chars

(defthm url-encode-chars-aux-of-make-character-list-chars
  (equal (url-encode-chars-aux (make-character-list chars)
                               acc)
         (url-encode-chars-aux chars acc)))

Theorem: url-encode-chars-aux-charlisteqv-congruence-on-chars

(defthm url-encode-chars-aux-charlisteqv-congruence-on-chars
  (implies (charlisteqv chars chars-equiv)
           (equal (url-encode-chars-aux chars acc)
                  (url-encode-chars-aux chars-equiv acc)))
  :rule-classes :congruence)