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Type

Type-kind

Get the kind (tag) of a type structure.

Signature
(type-kind x) → kind
Arguments: x — Guard (typep x).

Definitions and Theorems

Function: type-kind$inline

(defun type-kind$inline (x)
  (declare (xargs :guard (typep x)))
  (let ((__function__ 'type-kind))
    (declare (ignorable __function__))
    (mbe :logic (cond ((or (atom x) (eq (car x) :boolean))
                       :boolean)
                      ((eq (car x) :character) :character)
                      ((eq (car x) :string) :string)
                      ((eq (car x) :integer) :integer)
                      ((eq (car x) :set) :set)
                      ((eq (car x) :sequence) :sequence)
                      ((eq (car x) :map) :map)
                      ((eq (car x) :option) :option)
                      (t :defined))
         :exec (car x))))

Theorem: type-kind-possibilities

(defthm type-kind-possibilities
 (or (equal (type-kind x) :boolean)
     (equal (type-kind x) :character)
     (equal (type-kind x) :string)
     (equal (type-kind x) :integer)
     (equal (type-kind x) :set)
     (equal (type-kind x) :sequence)
     (equal (type-kind x) :map)
     (equal (type-kind x) :option)
     (equal (type-kind x) :defined))
 :rule-classes ((:forward-chaining :trigger-terms ((type-kind x)))))