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• Parse-clocking

Vl-parse-clocking-block-item

Match a clocking_item.

Signature

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

Arguments

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

SystemVerilog-2012 Grammar:

clocking_item ::=
   'default' default_skew ';'
 | clocking_direction list_of_clocking_decl_assign ';'
 | { attribute_instance } assertion_item_declaration

Definitions and Theorems

Function: vl-parse-clocking-block-item-fn

(defun vl-parse-clocking-block-item-fn (tokstream config)
 (declare (xargs :stobjs (tokstream)))
 (declare (xargs :guard (vl-loadconfig-p config)))
 (declare (ignorable config))
 (let ((__function__ 'vl-parse-clocking-block-item))
  (declare (ignorable __function__))
  (cond
   ((vl-is-token? :vl-kwd-default)
    (vl-parse-default-skew-item))
   ((vl-is-some-token?
         '(:vl-kwd-input :vl-kwd-output :vl-kwd-inout))
    (seq tokstream
         (head := (vl-parse-clocking-direction))
         (items := (vl-parse-list-of-clocking-decl-assigns head))
         (:= (vl-match-token :vl-semi))
         (return items)))
   (t
    (seq
     tokstream
     (atts := (vl-parse-0+-attribute-instances))
     (when (vl-is-token? :vl-kwd-property)
           (property := (vl-parse-property-declaration))
           (return (let ((stupid-hack-to-use-atts atts))
                     (declare (ignore stupid-hack-to-use-atts))
                     (list property))))
     (when (vl-is-token? :vl-kwd-sequence)
           (sequence := (vl-parse-sequence-declaration))
           (return (list sequence)))
     (when (vl-is-token? :vl-kwd-let)
           (return-raw
                (vl-parse-error
                     "BOZO not yet implemented: let declarations")))
     (return-raw
      (vl-parse-error
       "Expected default, clocking assignment, or assertion item")))))))

Theorem: vl-parse-clocking-block-item-fails-gracefully

(defthm vl-parse-clocking-block-item-fails-gracefully
  (implies (mv-nth 0 (vl-parse-clocking-block-item))
           (not (mv-nth 1 (vl-parse-clocking-block-item)))))

Theorem: vl-warning-p-of-vl-parse-clocking-block-item

(defthm vl-warning-p-of-vl-parse-clocking-block-item
  (iff (vl-warning-p (mv-nth 0 (vl-parse-clocking-block-item)))
       (mv-nth 0 (vl-parse-clocking-block-item))))

Theorem: vl-parse-clocking-block-item-result

(defthm vl-parse-clocking-block-item-result
  (implies (and t)
           (vl-clocking-block-item-list-p
                (mv-nth 1 (vl-parse-clocking-block-item)))))

Theorem: vl-parse-clocking-block-item-true-listp

(defthm vl-parse-clocking-block-item-true-listp
  (true-listp (mv-nth 1 (vl-parse-clocking-block-item)))
  :rule-classes :type-prescription)

Theorem: vl-parse-clocking-block-item-count-strong

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