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Expr-value

Expr-valuep

Recognizer for expr-value structures.

Signature
(expr-valuep x) → *

Definitions and Theorems

Function: expr-valuep

(defun expr-valuep (x)
  (declare (xargs :guard t))
  (let ((__function__ 'expr-valuep))
    (declare (ignorable __function__))
    (and (mbe :logic (and (alistp x)
                          (equal (strip-cars x) '(value object)))
              :exec (fty::alist-with-carsp x '(value object)))
         (b* ((value (cdr (std::da-nth 0 x)))
              (object (cdr (std::da-nth 1 x))))
           (and (valuep value)
                (objdesign-optionp object))))))

Theorem: consp-when-expr-valuep

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