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Ginp

Recognizer for gin structures.

Signature
(ginp x) → *

Definitions and Theorems

Function: ginp

(defun ginp (x)
 (declare (xargs :guard t))
 (let ((__function__ 'ginp))
  (declare (ignorable __function__))
  (and
   (mbe
      :logic (and (alistp x)
                  (equal (strip-cars x)
                         '(ienv const-new vartys events thm-index)))
      :exec (fty::alist-with-carsp
                 x
                 '(ienv const-new vartys events thm-index)))
   (b* ((ienv (cdr (std::da-nth 0 x)))
        (const-new (cdr (std::da-nth 1 x)))
        (vartys (cdr (std::da-nth 2 x)))
        (events (cdr (std::da-nth 3 x)))
        (thm-index (cdr (std::da-nth 4 x))))
     (and (c$::ienvp ienv)
          (symbolp const-new)
          (c::ident-type-mapp vartys)
          (pseudo-event-form-listp events)
          (posp thm-index))))))

Theorem: consp-when-ginp

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