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• Parser-messages

Span-to-msg

Represent a span as a message.

Signature

(span-to-msg span) → msg

Arguments

span — Guard (spanp span).

Returns

msg — Type (msgp msg).

This is used in user-oriented messages.

Definitions and Theorems

Function: span-to-msg

(defun span-to-msg (span)
  (declare (xargs :guard (spanp span)))
  (msg "[~@0 to ~@1]"
       (position-to-msg (span->start span))
       (position-to-msg (span->end span))))

Theorem: msgp-of-span-to-msg

(defthm msgp-of-span-to-msg
  (b* ((msg (span-to-msg span)))
    (msgp msg))
  :rule-classes :rewrite)

Theorem: span-to-msg-of-span-fix-span

(defthm span-to-msg-of-span-fix-span
  (equal (span-to-msg (span-fix span))
         (span-to-msg span)))

Theorem: span-to-msg-span-equiv-congruence-on-span

(defthm span-to-msg-span-equiv-congruence-on-span
  (implies (span-equiv span span-equiv)
           (equal (span-to-msg span)
                  (span-to-msg span-equiv)))
  :rule-classes :congruence)