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Jtype

Jtypep

Recognizer for jtype structures.

Signature
(jtypep x) → *

Definitions and Theorems

Function: jtypep

(defun jtypep (x)
  (declare (xargs :guard t))
  (let ((__function__ 'jtypep))
    (declare (ignorable __function__))
    (and (consp x)
         (cond ((or (atom x) (eq (car x) :prim))
                (and (true-listp (cdr x))
                     (eql (len (cdr x)) 1)
                     (b* ((type (std::da-nth 0 (cdr x))))
                       (primitive-typep type))))
               ((eq (car x) :class)
                (and (true-listp (cdr x))
                     (eql (len (cdr x)) 1)
                     (b* ((name (std::da-nth 0 (cdr x))))
                       (stringp name))))
               (t (and (eq (car x) :array)
                       (and (true-listp (cdr x))
                            (eql (len (cdr x)) 1))
                       (b* ((comp (std::da-nth 0 (cdr x))))
                         (jtypep comp))))))))

Theorem: consp-when-jtypep

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