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Ienv

Ienvp

Recognizer for ienv structures.

Signature
(ienvp x) → *

Definitions and Theorems

Function: ienvp

(defun ienvp (x)
 (declare (xargs :guard t))
 (and
  (mbe
      :logic
      (and (alistp x)
           (equal (strip-cars x)
                  '(version char+short+int+long+llong+bool-format)))
      :exec (fty::alist-with-carsp
                 x
                 '(version char+short+int+long+llong+bool-format)))
  (b*
   ((version (cdr (std::da-nth 0 x)))
    (char+short+int+long+llong+bool-format (cdr (std::da-nth 1 x))))
   (and (versionp version)
        (char+short+int+long+llong+bool-formatp
             char+short+int+long+llong+bool-format)
        (char+short+int+long+llong+bool-format-wfp
             char+short+int+long+llong+bool-format)))))

Theorem: consp-when-ienvp

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