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Alternative

Alternative->name

Get the name field from a alternative.

Signature
(alternative->name x) → name
Arguments: x — Guard (alternativep x).
Returns: name — Type (identifierp name).

This is an ordinary field accessor created by fty::defprod.

Definitions and Theorems

Function: alternative->name$inline

(defun alternative->name$inline (x)
  (declare (xargs :guard (alternativep x)))
  (declare (xargs :guard t))
  (let ((__function__ 'alternative->name))
    (declare (ignorable __function__))
    (mbe :logic
         (b* ((x (and t x)))
           (identifier-fix (cdr (std::da-nth 0 x))))
         :exec (cdr (std::da-nth 0 x)))))

Theorem: identifierp-of-alternative->name

(defthm identifierp-of-alternative->name
  (b* ((name (alternative->name$inline x)))
    (identifierp name))
  :rule-classes :rewrite)

Theorem: alternative->name$inline-of-alternative-fix-x

(defthm alternative->name$inline-of-alternative-fix-x
  (equal (alternative->name$inline (alternative-fix x))
         (alternative->name$inline x)))

Theorem: alternative->name$inline-alternative-equiv-congruence-on-x

(defthm alternative->name$inline-alternative-equiv-congruence-on-x
  (implies (alternative-equiv x x-equiv)
           (equal (alternative->name$inline x)
                  (alternative->name$inline x-equiv)))
  :rule-classes :congruence)