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• Parse-clocking

Vl-parse-defaultdisable

Match a single default disable iff ... construct

Signature

(vl-parse-defaultdisable atts &key (tokstream 'tokstream) 
                         (config 'config)) 
 
  → 
(mv errmsg? value new-tokstream)

Arguments

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

SystemVerilog-2012 Grammar:

module_or_generate_item_declaration ::= ...
    | 'default' 'disable' 'iff' expression_or_dist ';'

Definitions and Theorems

Function: vl-parse-defaultdisable-fn

(defun vl-parse-defaultdisable-fn (atts tokstream config)
 (declare (xargs :stobjs (tokstream)))
 (declare (xargs :guard (vl-loadconfig-p config)))
 (declare (ignorable config))
 (declare (xargs :guard (vl-atts-p atts)))
 (let ((__function__ 'vl-parse-defaultdisable))
   (declare (ignorable __function__))
   (seq tokstream
        (disable := (vl-match-token :vl-kwd-default))
        (:= (vl-match-token :vl-kwd-disable))
        (:= (vl-match-token :vl-kwd-iff))
        (exprdist := (vl-parse-expression-or-dist))
        (:= (vl-match-token :vl-semi))
        (return (make-vl-defaultdisable :exprdist exprdist
                                        :loc (vl-token->loc disable)
                                        :atts atts)))))

Theorem: vl-parse-defaultdisable-fails-gracefully

(defthm vl-parse-defaultdisable-fails-gracefully
  (implies (mv-nth 0 (vl-parse-defaultdisable atts))
           (not (mv-nth 1 (vl-parse-defaultdisable atts)))))

Theorem: vl-warning-p-of-vl-parse-defaultdisable

(defthm vl-warning-p-of-vl-parse-defaultdisable
  (iff (vl-warning-p (mv-nth 0 (vl-parse-defaultdisable atts)))
       (mv-nth 0 (vl-parse-defaultdisable atts))))

Theorem: vl-parse-defaultdisable-result

(defthm vl-parse-defaultdisable-result
 (implies
  (and (force (vl-atts-p atts)))
  (equal
     (vl-defaultdisable-p (mv-nth 1 (vl-parse-defaultdisable atts)))
     (not (mv-nth 0 (vl-parse-defaultdisable atts))))))

Theorem: vl-parse-defaultdisable-count-strong

(defthm vl-parse-defaultdisable-count-strong
 (and
  (<= (vl-tokstream-measure
           :tokstream (mv-nth 2 (vl-parse-defaultdisable atts)))
      (vl-tokstream-measure))
  (implies
       (not (mv-nth 0 (vl-parse-defaultdisable atts)))
       (< (vl-tokstream-measure
               :tokstream (mv-nth 2 (vl-parse-defaultdisable atts)))
          (vl-tokstream-measure))))
 :rule-classes ((:rewrite) (:linear)))