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Ext-declon

Ext-declonp

Recognizer for ext-declon structures.

Signature
(ext-declonp x) → *

Definitions and Theorems

Function: ext-declonp

(defun ext-declonp (x)
  (declare (xargs :guard t))
  (and (consp x)
       (cond ((or (atom x) (eq (car x) :fundef))
              (and (b* ((fundef (cdr x)))
                     (fundefp fundef))))
             ((eq (car x) :declon)
              (and (b* ((declon (cdr x)))
                     (declonp declon))))
             ((eq (car x) :empty)
              (and (eq (cdr x) nil) (b* nil t)))
             (t (and (eq (car x) :asm)
                     (and)
                     (b* ((stmt (cdr x)))
                       (asm-stmtp stmt)))))))

Theorem: consp-when-ext-declonp

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