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• Parse-timeunits

Vl-parse-timeliteral

Match a time_literal.

Signature

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

Arguments

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

A time_literal is handled by the lexer as a vl-timetoken and contains a quantity just as a string and a vl-timeunit-p, which is just what we need for our vl-timeliteral structures.

Definitions and Theorems

Function: vl-parse-timeliteral-fn

(defun vl-parse-timeliteral-fn (tokstream config)
 (declare (xargs :stobjs (tokstream)))
 (declare (xargs :guard (vl-loadconfig-p config)))
 (declare (ignorable config))
 (let ((__function__ 'vl-parse-timeliteral))
  (declare (ignorable __function__))
  (seq
    tokstream
    (lit := (vl-match-token :vl-timetoken))
    (return
         (make-vl-timeliteral :quantity (vl-timetoken->quantity lit)
                              :units (vl-timetoken->units lit))))))

Theorem: vl-parse-timeliteral-fails-gracefully

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

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

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

Theorem: vl-parse-timeliteral-result

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

Theorem: vl-parse-timeliteral-count-strong

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