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Expr/tyname

Expr/tyname-p

Recognizer for expr/tyname structures.

Signature
(expr/tyname-p x) → *

Definitions and Theorems

Function: expr/tyname-p

(defun 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))))
             (t (and (eq (car x) :tyname)
                     (and)
                     (b* ((tyname (cdr x)))
                       (tynamep tyname)))))))

Theorem: consp-when-expr/tyname-p

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