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Vl-string-needs-html-encoding-p

Signature

(vl-string-needs-html-encoding-p x n xl) → *

Arguments

x — Guard (stringp x).

n — Guard (natp n).

xl — Guard (eql xl (length x)).

Definitions and Theorems

Function: vl-string-needs-html-encoding-p

(defun vl-string-needs-html-encoding-p (x n xl)
  (declare (xargs :guard (and (stringp x)
                              (natp n)
                              (eql xl (length x)))))
  (declare (type string x)
           (type unsigned-byte n xl))
  (declare (xargs :split-types t :guard (<= n xl)))
  (let ((__function__ 'vl-string-needs-html-encoding-p))
    (declare (ignorable __function__))
    (b* (((when (mbe :logic (zp (- (nfix xl) (nfix n)))
                     :exec (eql xl n)))
          nil)
         ((the character char) (char x n)))
      (or (eql char #\Space)
          (eql char #\Newline)
          (eql char #\<)
          (eql char #\>)
          (eql char #\&)
          (eql char #\")
          (eql char #\Tab)
          (vl-string-needs-html-encoding-p x (+ 1 (lnfix n))
                                           xl)))))

Theorem: vl-string-needs-html-encoding-p-of-str-fix-x

(defthm vl-string-needs-html-encoding-p-of-str-fix-x
  (equal (vl-string-needs-html-encoding-p (str-fix x)
                                          n xl)
         (vl-string-needs-html-encoding-p x n xl)))

Theorem: vl-string-needs-html-encoding-p-streqv-congruence-on-x

(defthm vl-string-needs-html-encoding-p-streqv-congruence-on-x
  (implies (streqv x x-equiv)
           (equal (vl-string-needs-html-encoding-p x n xl)
                  (vl-string-needs-html-encoding-p x-equiv n xl)))
  :rule-classes :congruence)

Theorem: vl-string-needs-html-encoding-p-of-nfix-n

(defthm vl-string-needs-html-encoding-p-of-nfix-n
  (equal (vl-string-needs-html-encoding-p x (nfix n)
                                          xl)
         (vl-string-needs-html-encoding-p x n xl)))

Theorem: vl-string-needs-html-encoding-p-nat-equiv-congruence-on-n

(defthm vl-string-needs-html-encoding-p-nat-equiv-congruence-on-n
  (implies (acl2::nat-equiv n n-equiv)
           (equal (vl-string-needs-html-encoding-p x n xl)
                  (vl-string-needs-html-encoding-p x n-equiv xl)))
  :rule-classes :congruence)