		Search-engine friendly clone of the ACL2 documentation.

Amb?-expr/tyname

Amb?-expr/tyname-p

Recognizer for amb?-expr/tyname structures.

Signature
(amb?-expr/tyname-p x) → *

Definitions and Theorems

Function: amb?-expr/tyname-p

(defun amb?-expr/tyname-p (x)
  (declare (xargs :guard t))
  (and (consp x)
       (cond ((or (atom x) (eq (car x) :expr))
              (and (b* ((expr (cdr x))) (exprp expr))))
             ((eq (car x) :tyname)
              (and (b* ((tyname (cdr x)))
                     (tynamep tyname))))
             (t (and (eq (car x) :ambig)
                     (and)
                     (b* ((expr/tyname (cdr x)))
                       (amb-expr/tyname-p expr/tyname)))))))

Theorem: consp-when-amb?-expr/tyname-p

(defthm consp-when-amb?-expr/tyname-p
  (implies (amb?-expr/tyname-p x)
           (consp x))
  :rule-classes :compound-recognizer)