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• Parse-utils

Vl-current-loc

Compatible with seq. Get the current location.

Signature

(vl-current-loc &key (tokstream 'tokstream)) 
  → 
(mv errmsg loc new-tokstream)

Returns

errmsg — Type (not errmsg).

loc — Type (vl-location-p loc).

new-tokstream — Type (equal new-tokstream tokstream).

We just return the location of the first token, if there is one. Or, if the token stream is empty, we just return *vl-fakeloc*

Definitions and Theorems

Function: vl-current-loc-fn

(defun vl-current-loc-fn (tokstream)
  (declare (xargs :stobjs (tokstream)))
  (declare (xargs :guard t))
  (let ((__function__ 'vl-current-loc))
    (declare (ignorable __function__))
    (b* ((tokens (vl-tokstream->tokens)))
      (mv nil
          (if (consp tokens)
              (vl-token->loc (car tokens))
            *vl-fakeloc*)
          tokstream))))

Theorem: not-of-vl-current-loc.errmsg

(defthm not-of-vl-current-loc.errmsg
  (b* (((mv ?errmsg ?loc ?new-tokstream)
        (vl-current-loc-fn tokstream)))
    (not errmsg))
  :rule-classes :rewrite)

Theorem: vl-location-p-of-vl-current-loc.loc

(defthm vl-location-p-of-vl-current-loc.loc
  (b* (((mv ?errmsg ?loc ?new-tokstream)
        (vl-current-loc-fn tokstream)))
    (vl-location-p loc))
  :rule-classes :rewrite)

Theorem: return-type-of-vl-current-loc.new-tokstream

(defthm return-type-of-vl-current-loc.new-tokstream
  (b* (((mv ?errmsg ?loc ?new-tokstream)
        (vl-current-loc-fn tokstream)))
    (equal new-tokstream tokstream))
  :rule-classes :rewrite)