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• Vl-find-file

Vl-cache-find-file-aux

Alternative to vl-slow-find-file-aux using a vl-dirlist-cache-p.

Signature

(vl-cache-find-file-aux filename searchcache) → realpath

Arguments

filename — Guard (stringp filename).

searchcache — Guard (vl-dirlist-cache-p searchcache).

Returns

realpath — Type (maybe-stringp realpath).

Definitions and Theorems

Function: vl-cache-find-file-aux

(defun vl-cache-find-file-aux (filename searchcache)
  (declare (xargs :guard (and (stringp filename)
                              (vl-dirlist-cache-p searchcache))))
  (let ((__function__ 'vl-cache-find-file-aux))
    (declare (ignorable __function__))
    (b* ((filename (string-fix filename))
         (searchcache (vl-dirlist-cache-fix searchcache))
         ((when (atom searchcache)) nil)
         ((cons dir file-fal) (car searchcache))
         (exists-p (hons-get filename file-fal))
         ((when exists-p)
          (vl-extend-pathname dir filename)))
      (vl-cache-find-file-aux filename (cdr searchcache)))))

Theorem: maybe-stringp-of-vl-cache-find-file-aux

(defthm maybe-stringp-of-vl-cache-find-file-aux
  (b* ((realpath (vl-cache-find-file-aux filename searchcache)))
    (maybe-stringp realpath))
  :rule-classes :type-prescription)

Theorem: vl-cache-find-file-aux-of-str-fix-filename

(defthm vl-cache-find-file-aux-of-str-fix-filename
  (equal (vl-cache-find-file-aux (str-fix filename)
                                 searchcache)
         (vl-cache-find-file-aux filename searchcache)))

Theorem: vl-cache-find-file-aux-streqv-congruence-on-filename

(defthm vl-cache-find-file-aux-streqv-congruence-on-filename
  (implies
       (streqv filename filename-equiv)
       (equal (vl-cache-find-file-aux filename searchcache)
              (vl-cache-find-file-aux filename-equiv searchcache)))
  :rule-classes :congruence)

Theorem: vl-cache-find-file-aux-of-vl-dirlist-cache-fix-searchcache

(defthm vl-cache-find-file-aux-of-vl-dirlist-cache-fix-searchcache
  (equal (vl-cache-find-file-aux filename
                                 (vl-dirlist-cache-fix searchcache))
         (vl-cache-find-file-aux filename searchcache)))

Theorem: vl-cache-find-file-aux-vl-dirlist-cache-equiv-congruence-on-searchcache

(defthm
 vl-cache-find-file-aux-vl-dirlist-cache-equiv-congruence-on-searchcache
 (implies
      (vl-dirlist-cache-equiv searchcache searchcache-equiv)
      (equal (vl-cache-find-file-aux filename searchcache)
             (vl-cache-find-file-aux filename searchcache-equiv)))
 :rule-classes :congruence)