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• Vl-find-basename/extension

Vl-find-highest-priority-extension

Signature

(vl-find-highest-priority-extension extensions found) → hit

Arguments

extensions — Extensions we care about in priority order.
    Guard (string-listp extensions).

found — Extensions we found for this particular file.
    Guard (string-listp found).

Returns

hit — Type (stringp hit).

Definitions and Theorems

Function: vl-find-highest-priority-extension

(defun vl-find-highest-priority-extension (extensions found)
  (declare (xargs :guard (and (string-listp extensions)
                              (string-listp found))))
  (let ((__function__ 'vl-find-highest-priority-extension))
    (declare (ignorable __function__))
    (b* ((extensions (string-list-fix extensions))
         (found (string-list-fix found))
         ((when (atom extensions))
          (raise "Programming error, failed to find extension.")
          "")
         ((when (member-equal (car extensions) found))
          (car extensions)))
      (vl-find-highest-priority-extension (cdr extensions)
                                          found))))

Theorem: stringp-of-vl-find-highest-priority-extension

(defthm stringp-of-vl-find-highest-priority-extension
  (b* ((hit (vl-find-highest-priority-extension extensions found)))
    (stringp hit))
  :rule-classes :type-prescription)

Theorem: vl-find-highest-priority-extension-of-string-list-fix-extensions

(defthm
   vl-find-highest-priority-extension-of-string-list-fix-extensions
 (equal
    (vl-find-highest-priority-extension (string-list-fix extensions)
                                        found)
    (vl-find-highest-priority-extension extensions found)))

Theorem: vl-find-highest-priority-extension-string-list-equiv-congruence-on-extensions

(defthm
 vl-find-highest-priority-extension-string-list-equiv-congruence-on-extensions
 (implies
  (str::string-list-equiv extensions extensions-equiv)
  (equal
       (vl-find-highest-priority-extension extensions found)
       (vl-find-highest-priority-extension extensions-equiv found)))
 :rule-classes :congruence)

Theorem: vl-find-highest-priority-extension-of-string-list-fix-found

(defthm vl-find-highest-priority-extension-of-string-list-fix-found
  (equal (vl-find-highest-priority-extension
              extensions (string-list-fix found))
         (vl-find-highest-priority-extension extensions found)))

Theorem: vl-find-highest-priority-extension-string-list-equiv-congruence-on-found

(defthm
 vl-find-highest-priority-extension-string-list-equiv-congruence-on-found
 (implies
  (str::string-list-equiv found found-equiv)
  (equal
       (vl-find-highest-priority-extension extensions found)
       (vl-find-highest-priority-extension extensions found-equiv)))
 :rule-classes :congruence)