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• Tokens

Vl-token-p

Token structure produced by our lexer.

Signature

(vl-token-p x) → *

vl-token-p is a sum-of-products style recognizer. Every token is one of the following:

• vl-plaintoken-p
• vl-inttoken-p
• vl-idtoken-p
• vl-sysidtoken-p
• vl-stringtoken-p
• vl-realtoken-p
• vl-timetoken-p
• vl-extinttoken-p

Our lexer produces a token list for our parser to consume. Any token can be inspected with the following operations:

• vl-token->type, get the token's type
• vl-token->etext, get the token's actual text
• vl-token->loc, get the location of the token's first character

Definitions and Theorems

Function: vl-token-p

(defun vl-token-p (x)
  (declare (xargs :guard t))
  (let ((__function__ 'vl-token-p))
    (declare (ignorable __function__))
    (mbe :logic (or (vl-idtoken-p x)
                    (vl-inttoken-p x)
                    (vl-sysidtoken-p x)
                    (vl-stringtoken-p x)
                    (vl-realtoken-p x)
                    (vl-timetoken-p x)
                    (vl-extinttoken-p x)
                    (vl-plaintoken-p x))
         :exec (case (tag x)
                     (:vl-idtoken (vl-idtoken-p x))
                     (:vl-inttoken (vl-inttoken-p x))
                     (:vl-sysidtoken (vl-sysidtoken-p x))
                     (:vl-stringtoken (vl-stringtoken-p x))
                     (:vl-realtoken (vl-realtoken-p x))
                     (:vl-timetoken (vl-timetoken-p x))
                     (:vl-extinttoken (vl-extinttoken-p x))
                     (otherwise (vl-plaintoken-p x))))))

Theorem: vl-token-p-when-vl-plaintoken-p

(defthm vl-token-p-when-vl-plaintoken-p
  (implies (vl-plaintoken-p x)
           (vl-token-p x)))

Theorem: vl-token-p-when-vl-stringtoken-p

(defthm vl-token-p-when-vl-stringtoken-p
  (implies (vl-stringtoken-p x)
           (vl-token-p x)))

Theorem: vl-token-p-when-vl-idtoken-p

(defthm vl-token-p-when-vl-idtoken-p
  (implies (vl-idtoken-p x)
           (vl-token-p x)))

Theorem: vl-token-p-when-vl-sysidtoken-p

(defthm vl-token-p-when-vl-sysidtoken-p
  (implies (vl-sysidtoken-p x)
           (vl-token-p x)))

Theorem: vl-token-p-when-vl-inttoken-p

(defthm vl-token-p-when-vl-inttoken-p
  (implies (vl-inttoken-p x)
           (vl-token-p x)))

Theorem: vl-token-p-when-vl-realtoken-p

(defthm vl-token-p-when-vl-realtoken-p
  (implies (vl-realtoken-p x)
           (vl-token-p x)))

Theorem: vl-token-p-when-vl-timetoken-p

(defthm vl-token-p-when-vl-timetoken-p
  (implies (vl-timetoken-p x)
           (vl-token-p x)))

Theorem: vl-token-p-when-vl-extinttoken-p

(defthm vl-token-p-when-vl-extinttoken-p
  (implies (vl-extinttoken-p x)
           (vl-token-p x)))