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Binding

Bindingp

Recognizer for binding structures.

Signature
(bindingp x) → *

Definitions and Theorems

Function: bindingp

(defun bindingp (x)
  (declare (xargs :guard t))
  (let ((__function__ 'bindingp))
    (declare (ignorable __function__))
    (and (mbe :logic (and (alistp x)
                          (equal (strip-cars x)
                                 '(variables value)))
              :exec (fty::alist-with-carsp x '(variables value)))
         (b* ((variables (cdr (std::da-nth 0 x)))
              (value (cdr (std::da-nth 1 x))))
           (and (typed-variable-listp variables)
                (expressionp value))))))

Theorem: consp-when-bindingp

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