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Maybe-expression

Maybe-expressionp

Recognizer for maybe-expression structures.

Signature
(maybe-expressionp x) → *

Definitions and Theorems

Function: maybe-expressionp

(defun maybe-expressionp (x)
  (declare (xargs :guard t))
  (let ((__function__ 'maybe-expressionp))
    (declare (ignorable __function__))
    (cond ((not x) (b* nil t))
          (t (b* ((fty::val x))
               (expressionp fty::val))))))