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• Parse-clocking

Vl-maybe-parse-clocking-skew

Match [clocking_skew].

Signature

(vl-maybe-parse-clocking-skew &key (tokstream 'tokstream) 
                              (config 'config)) 
 
  → 
(mv errmsg? value new-tokstream)

Arguments

config — Guard (vl-loadconfig-p config).

Definitions and Theorems

Function: vl-maybe-parse-clocking-skew-fn

(defun vl-maybe-parse-clocking-skew-fn (tokstream config)
 (declare (xargs :stobjs (tokstream)))
 (declare (xargs :guard (vl-loadconfig-p config)))
 (declare (ignorable config))
 (let ((__function__ 'vl-maybe-parse-clocking-skew))
  (declare (ignorable __function__))
  (seq
   tokstream
   (when
       (vl-is-some-token? '(:vl-kwd-posedge :vl-kwd-negedge
                                            :vl-kwd-edge :vl-pound))
       (skew := (vl-parse-clocking-skew))
       (return skew))
   (return nil))))

Theorem: vl-maybe-parse-clocking-skew-fails-gracefully

(defthm vl-maybe-parse-clocking-skew-fails-gracefully
  (implies (mv-nth 0 (vl-maybe-parse-clocking-skew))
           (not (mv-nth 1 (vl-maybe-parse-clocking-skew)))))

Theorem: vl-warning-p-of-vl-maybe-parse-clocking-skew

(defthm vl-warning-p-of-vl-maybe-parse-clocking-skew
  (iff (vl-warning-p (mv-nth 0 (vl-maybe-parse-clocking-skew)))
       (mv-nth 0 (vl-maybe-parse-clocking-skew))))

Theorem: vl-maybe-parse-clocking-skew-result

(defthm vl-maybe-parse-clocking-skew-result
 (implies
    (and t)
    (vl-maybe-clkskew-p (mv-nth 1 (vl-maybe-parse-clocking-skew)))))

Theorem: vl-maybe-parse-clocking-skew-count-weak

(defthm vl-maybe-parse-clocking-skew-count-weak
  (<= (vl-tokstream-measure
           :tokstream (mv-nth 2 (vl-maybe-parse-clocking-skew)))
      (vl-tokstream-measure))
  :rule-classes ((:rewrite) (:linear)))