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• Parse-utils

Vl-parse-warning

Compatible with seq. Produce a non-fatal warning (not an error, doesn't stop execution) that includes the current location.

Signature

(vl-parse-warning type description 
                  &key (function '__function__) 
                  (tokstream 'tokstream)) 
 
  → 
(mv errmsg value new-tokstream)

Arguments

type — Type for this warning.
    Guard (symbolp type).

description — Short message about what happened.
    Guard (stringp description).

function — Guard (symbolp function).

Returns

errmsg — Never produces an error.
    Type (not errmsg).

value — Value is always nil.
    Type (not value).

Definitions and Theorems

Function: vl-parse-warning-fn

(defun vl-parse-warning-fn (type description function tokstream)
 (declare (xargs :stobjs (tokstream)))
 (declare (xargs :guard (and (symbolp type)
                             (stringp description)
                             (symbolp function))))
 (let ((__function__ 'vl-parse-warning))
  (declare (ignorable __function__))
  (b*
   ((tokens (vl-tokstream->tokens))
    (warning
       (make-vl-warning :type type
                        :msg "At ~a0: ~s1"
                        :args (list (if (consp tokens)
                                        (vl-token->loc (car tokens))
                                      "EOF")
                                    description)
                        :fn function
                        :fatalp nil))
    (tokstream (vl-tokstream-add-warning warning)))
   (mv nil nil tokstream))))

Theorem: not-of-vl-parse-warning.errmsg

(defthm not-of-vl-parse-warning.errmsg
  (b* (((mv ?errmsg acl2::?value ?new-tokstream)
        (vl-parse-warning-fn type description function tokstream)))
    (not errmsg))
  :rule-classes :rewrite)

Theorem: not-of-vl-parse-warning.value

(defthm not-of-vl-parse-warning.value
  (b* (((mv ?errmsg acl2::?value ?new-tokstream)
        (vl-parse-warning-fn type description function tokstream)))
    (not value))
  :rule-classes :rewrite)

Theorem: vl-tokstream->tokens-of-vl-parse-warning

(defthm vl-tokstream->tokens-of-vl-parse-warning
  (b* (((mv ?errmsg acl2::?value ?new-tokstream)
        (vl-parse-warning-fn type description function tokstream)))
    (equal (vl-tokstream->tokens :tokstream new-tokstream)
           (vl-tokstream->tokens)))
  :rule-classes :rewrite)