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Symbol-value

Symbol-valuep

Recognizer for symbol-value structures.

Signature
(symbol-valuep x) → *

Definitions and Theorems

Function: symbol-valuep

(defun symbol-valuep (x)
  (declare (xargs :guard t))
  (let ((__function__ 'symbol-valuep))
    (declare (ignorable __function__))
    (and (mbe :logic (and (alistp x)
                          (equal (strip-cars x) '(package name)))
              :exec (fty::alist-with-carsp x '(package name)))
         (b* ((package (cdr (std::da-nth 0 x)))
              (name (cdr (std::da-nth 1 x))))
           (and (stringp package)
                (stringp name))))))

Theorem: consp-when-symbol-valuep

(defthm consp-when-symbol-valuep
  (implies (symbol-valuep x) (consp x))
  :rule-classes :compound-recognizer)