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Identifiers

Tidentifierp

Recognizer for tidentifier.

Signature
(tidentifierp x) → yes/no
Returns: yes/no — Type (booleanp yes/no).

Definitions and Theorems

Function: tidentifierp

(defun tidentifierp (x)
  (declare (xargs :guard t))
  (let ((__function__ 'tidentifierp))
    (declare (ignorable __function__))
    (and (identifierp x)
         (not (equal x (string=>unicode "var")))
         (not (equal x (string=>unicode "yield"))))))

Theorem: booleanp-of-tidentifierp

(defthm booleanp-of-tidentifierp
  (b* ((yes/no (tidentifierp x)))
    (booleanp yes/no))
  :rule-classes :rewrite)