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• Preprocessor

Vl-read-timescale

Signature

(vl-read-timescale echars) → (mv prefix remainder)

Arguments

echars — Guard (vl-echarlist-p echars).

Definitions and Theorems

Function: vl-read-timescale

(defun vl-read-timescale (echars)
 (declare (xargs :guard (vl-echarlist-p echars)))
 (let ((__function__ 'vl-read-timescale))
  (declare (ignorable __function__))
  (b* (((mv ws1 remainder)
        (vl-read-while-whitespace echars))
       ((mv tu-val remainder)
        (vl-read-some-literal (list "100" "10" "1")
                              remainder))
       ((mv ws2 remainder)
        (vl-read-while-whitespace remainder))
       ((mv tu-type remainder)
        (vl-read-some-literal (list "fs" "ps" "ns" "us" "ms" "s")
                              remainder))
       ((mv ws3 remainder)
        (vl-read-while-whitespace remainder))
       ((mv div remainder)
        (vl-read-literal "/" remainder))
       ((mv ws4 remainder)
        (vl-read-while-whitespace remainder))
       ((mv tp-val remainder)
        (vl-read-some-literal (list "100" "10" "1")
                              remainder))
       ((mv ws5 remainder)
        (vl-read-while-whitespace remainder))
       ((mv tp-type remainder)
        (vl-read-some-literal (list "fs" "ps" "ns" "us" "ms" "s")
                              remainder)))
   (if (and tu-val tu-type div tp-val tp-type)
       (mv (append ws1 tu-val ws2
                   tu-type ws3 div ws4 tp-val ws5 tp-type)
           remainder)
    (mv
     (cw "Preprocessor error (~s0): invalid `timescale directive.~%"
         (if (consp echars)
             (vl-location-string (vl-echar->loc (car echars)))
           "at end of file"))
     echars)))))

Theorem: prefix-of-vl-read-timescale

(defthm prefix-of-vl-read-timescale
 (and
   (true-listp (mv-nth 0 (vl-read-timescale echars)))
   (implies (force (vl-echarlist-p echars))
            (vl-echarlist-p (mv-nth 0 (vl-read-timescale echars)))))
 :rule-classes
 ((:rewrite)
  (:type-prescription
    :corollary (true-listp (mv-nth 0 (vl-read-timescale echars))))))

Theorem: remainder-of-vl-read-timescale

(defthm remainder-of-vl-read-timescale
 (and
   (equal (true-listp (mv-nth 1 (vl-read-timescale echars)))
          (true-listp echars))
   (implies (force (vl-echarlist-p echars))
            (vl-echarlist-p (mv-nth 1 (vl-read-timescale echars)))))
 :rule-classes
 ((:rewrite)
  (:type-prescription
     :corollary
     (implies (true-listp echars)
              (true-listp (mv-nth 1 (vl-read-timescale echars)))))))

Theorem: append-of-vl-read-timescale

(defthm append-of-vl-read-timescale
  (equal (append (mv-nth 0 (vl-read-timescale echars))
                 (mv-nth 1 (vl-read-timescale echars)))
         echars))

Theorem: no-change-loser-of-vl-read-timescale

(defthm no-change-loser-of-vl-read-timescale
  (implies (not (mv-nth 0 (vl-read-timescale echars)))
           (equal (mv-nth 1 (vl-read-timescale echars))
                  echars)))

Theorem: acl2-count-of-vl-read-timescale-weak

(defthm acl2-count-of-vl-read-timescale-weak
  (<= (acl2-count (mv-nth 1 (vl-read-timescale echars)))
      (acl2-count echars))
  :rule-classes ((:rewrite) (:linear)))

Theorem: acl2-count-of-vl-read-timescale-strong

(defthm acl2-count-of-vl-read-timescale-strong
  (implies (mv-nth 0 (vl-read-timescale echars))
           (< (acl2-count (mv-nth 1 (vl-read-timescale echars)))
              (acl2-count echars)))
  :rule-classes ((:rewrite) (:linear)))

Subtopics

Vl-read-timescale-prefix/remainder-thms

Prefix and remainder theorems for vl-read-timescale, automatically generated by def-prefix/remainder-thms.