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• Parse-utils

Vl-match-any

Compatible with seq. Get the first token, no matter what kind of token it is. Causes an error on EOF.

Signature

(vl-match-any &key (function '__function__) (tokstream 'tokstream)) 
  → 
(mv errmsg? token new-tokstream)

Arguments

function — Guard (symbolp function).

Definitions and Theorems

Function: vl-match-any$inline

(defun vl-match-any$inline (function tokstream)
  (declare (xargs :stobjs (tokstream)))
  (declare (xargs :guard (symbolp function)))
  (let ((__function__ 'vl-match-any))
    (declare (ignorable __function__))
    (b* ((tokens (vl-tokstream->tokens))
         ((when (atom tokens))
          (vl-parse-error "Unexpected EOF."
                          :function function))
         (tokstream (vl-tokstream-pop)))
      (mv nil (car tokens) tokstream))))

Theorem: vl-match-any-fails-gracefully

(defthm vl-match-any-fails-gracefully
  (implies (mv-nth 0 (vl-match-any))
           (equal (mv-nth 1 (vl-match-any)) nil)))

Theorem: vl-warning-p-of-vl-match-any

(defthm vl-warning-p-of-vl-match-any
  (iff (vl-warning-p (mv-nth 0 (vl-match-any)))
       (mv-nth 0 (vl-match-any))))

Theorem: vl-token-p-of-vl-match-any

(defthm vl-token-p-of-vl-match-any
  (implies (not (mv-nth 0 (vl-match-any)))
           (vl-token-p (mv-nth 1 (vl-match-any)))))

Theorem: vl-match-any-fn-count-strong-on-value

(defthm vl-match-any-fn-count-strong-on-value
 (and
  (<= (vl-tokstream-measure :tokstream (mv-nth 2 (vl-match-any)))
      (vl-tokstream-measure))
  (implies
      (mv-nth 1 (vl-match-any))
      (< (vl-tokstream-measure :tokstream (mv-nth 2 (vl-match-any)))
         (vl-tokstream-measure))))
 :rule-classes ((:rewrite) (:linear)))

Theorem: equal-of-vl-match-any-fn-count

(defthm equal-of-vl-match-any-fn-count
 (equal
  (equal (vl-tokstream-measure :tokstream (mv-nth 2 (vl-match-any)))
         (vl-tokstream-measure))
  (if (mv-nth 0 (vl-match-any)) t nil)))