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• Html-encoding

Vl-html-encode-push

Print the HTML encoding of a character.

Signature

(vl-html-encode-push char1 col tabsize acc) → new-acc

Arguments

char1 — Character to be printed.
    Guard (characterp char1).

col — Current column number before printing char1 (for tab computations).
    Guard (natp col).

tabsize — Guard (posp tabsize).

acc — Reverse order characters we're building.

Returns

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

Definitions and Theorems

Function: vl-html-encode-push

(defun vl-html-encode-push (char1 col tabsize acc)
 (declare (xargs :guard (and (characterp char1)
                             (natp col)
                             (posp tabsize))))
 (let ((__function__ 'vl-html-encode-push))
  (declare (ignorable __function__))
  (b* ((char1 (mbe :logic (char-fix char1)
                   :exec char1))
       (col (lnfix col)))
   (case char1
         (#\Space (if (or (atom acc)
                          (eql (car acc) #\Space)
                          (eql (car acc) #\Newline))
                      (revappend *vl-html-&nbsp* acc)
                    (cons #\Space acc)))
         (#\Newline (revappend *vl-html-newline* acc))
         (#\< (revappend *vl-html-&lt* acc))
         (#\> (revappend *vl-html-&gt* acc))
         (#\& (revappend *vl-html-&amp* acc))
         (#\" (revappend *vl-html-&quot* acc))
         (#\Tab (repeated-revappend (vl-distance-to-tab col tabsize)
                                    *vl-html-&nbsp* acc))
         (otherwise (cons char1 acc))))))

Theorem: character-listp-of-vl-html-encode-push

(defthm character-listp-of-vl-html-encode-push
  (implies
       (character-listp acc)
       (b* ((new-acc (vl-html-encode-push char1 col tabsize acc)))
         (character-listp new-acc)))
  :rule-classes :rewrite)

Theorem: vl-html-encode-push-of-char-fix-char1

(defthm vl-html-encode-push-of-char-fix-char1
  (equal (vl-html-encode-push (char-fix char1)
                              col tabsize acc)
         (vl-html-encode-push char1 col tabsize acc)))

Theorem: vl-html-encode-push-chareqv-congruence-on-char1

(defthm vl-html-encode-push-chareqv-congruence-on-char1
 (implies (chareqv char1 char1-equiv)
          (equal (vl-html-encode-push char1 col tabsize acc)
                 (vl-html-encode-push char1-equiv col tabsize acc)))
 :rule-classes :congruence)

Theorem: vl-html-encode-push-of-nfix-col

(defthm vl-html-encode-push-of-nfix-col
  (equal (vl-html-encode-push char1 (nfix col)
                              tabsize acc)
         (vl-html-encode-push char1 col tabsize acc)))

Theorem: vl-html-encode-push-nat-equiv-congruence-on-col

(defthm vl-html-encode-push-nat-equiv-congruence-on-col
 (implies (acl2::nat-equiv col col-equiv)
          (equal (vl-html-encode-push char1 col tabsize acc)
                 (vl-html-encode-push char1 col-equiv tabsize acc)))
 :rule-classes :congruence)

Theorem: vl-html-encode-push-of-pos-fix-tabsize

(defthm vl-html-encode-push-of-pos-fix-tabsize
  (equal (vl-html-encode-push char1 col (pos-fix tabsize)
                              acc)
         (vl-html-encode-push char1 col tabsize acc)))

Theorem: vl-html-encode-push-pos-equiv-congruence-on-tabsize

(defthm vl-html-encode-push-pos-equiv-congruence-on-tabsize
 (implies (acl2::pos-equiv tabsize tabsize-equiv)
          (equal (vl-html-encode-push char1 col tabsize acc)
                 (vl-html-encode-push char1 col tabsize-equiv acc)))
 :rule-classes :congruence)