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• Parse-property

Vl-parse-boolean-abbrev

Matches boolean_abbrev.

Signature

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

Arguments

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

Relevant grammar rules:

boolean_abbrev ::= consecutive_repetition
                 | non_consecutive_repetition
                 | goto_repetition

consecutive_repetition ::= '[*' const_or_range_expression ']'
                         | '[*]'
                         | '[+]'

non_consecutive_repetition ::= ['=' const_or_range_expression ]

goto_repetition ::= ['->' const_or_range_expression ]

const_or_range_expression ::= constant_expression
                            | cycle_delay_const_range_expression

cycle_delay_const_range_expression ::= constant_expression ':' constant_expression
                                     | constant_expression ':' '$'

Definitions and Theorems

Function: vl-parse-boolean-abbrev-fn

(defun vl-parse-boolean-abbrev-fn (tokstream config)
 (declare (xargs :stobjs (tokstream)))
 (declare (xargs :guard (vl-loadconfig-p config)))
 (declare (ignorable config))
 (let ((__function__ 'vl-parse-boolean-abbrev))
  (declare (ignorable __function__))
  (seq
   tokstream
   (:= (vl-match-token :vl-lbrack))
   (when
        (vl-is-token? :vl-plus)
        (:= (vl-match))
        (:= (vl-match-token :vl-rbrack))
        (return (make-vl-repetition :type :vl-repetition-consecutive
                                    :left (vl-make-index 1)
                                    :right *vl-end-of-sequence-$*)))
   (type
      := (vl-match-some-token '(:vl-times :vl-arrow :vl-equalsign)))
   (when
        (and (eq (vl-token->type type) :vl-times)
             (vl-is-token? :vl-rbrack))
        (:= (vl-match))
        (return (make-vl-repetition :type :vl-repetition-consecutive
                                    :left (vl-make-index 0)
                                    :right *vl-end-of-sequence-$*)))
   (left := (vl-parse-expression))
   (when (vl-is-token? :vl-colon)
         (:= (vl-match))
         (right := (vl-parse-expression)))
   (:= (vl-match-token :vl-rbrack))
   (return
     (make-vl-repetition
          :type (case (vl-token->type type)
                      (:vl-times :vl-repetition-consecutive)
                      (:vl-arrow :vl-repetition-goto)
                      (:vl-equalsign :vl-repetition-nonconsecutive))
          :left left
          :right right)))))

Theorem: vl-parse-boolean-abbrev-fails-gracefully

(defthm vl-parse-boolean-abbrev-fails-gracefully
  (implies (mv-nth 0 (vl-parse-boolean-abbrev))
           (not (mv-nth 1 (vl-parse-boolean-abbrev)))))

Theorem: vl-warning-p-of-vl-parse-boolean-abbrev

(defthm vl-warning-p-of-vl-parse-boolean-abbrev
  (iff (vl-warning-p (mv-nth 0 (vl-parse-boolean-abbrev)))
       (mv-nth 0 (vl-parse-boolean-abbrev))))

Theorem: vl-parse-boolean-abbrev-result

(defthm vl-parse-boolean-abbrev-result
  (implies
       (and t)
       (equal (vl-repetition-p (mv-nth 1 (vl-parse-boolean-abbrev)))
              (not (mv-nth 0 (vl-parse-boolean-abbrev))))))

Theorem: vl-parse-boolean-abbrev-count-strong

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