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• Lexeme

Lexeme-kind

Get the kind (tag) of a lexeme structure.

Signature

(lexeme-kind x) → kind

Arguments

x — Guard (lexemep x).

Definitions and Theorems

Function: lexeme-kind$inline

(defun lexeme-kind$inline (x)
  (declare (xargs :guard (lexemep x)))
  (let ((__function__ 'lexeme-kind))
    (declare (ignorable __function__))
    (mbe :logic (cond ((or (atom x) (eq (car x) :token))
                       :token)
                      ((eq (car x) :comment) :comment)
                      (t :whitespace))
         :exec (car x))))

Theorem: lexeme-kind-possibilities

(defthm lexeme-kind-possibilities
  (or (equal (lexeme-kind x) :token)
      (equal (lexeme-kind x) :comment)
      (equal (lexeme-kind x) :whitespace))
  :rule-classes
  ((:forward-chaining :trigger-terms ((lexeme-kind x)))))