;;; Code:
+;; load-history is a list of entries that look like this:
+;; ("outline" outline-regexp ... (require . wid-edit) ... (provide . outline) ...)
+
(defun symbol-file (sym)
"Return the input source from which SYM was loaded.
This is a file name, or nil if the source was a buffer with no associated file."
(interactive "SFind source file for symbol: ") ; XEmacs
- (catch 'foundit
- (mapcar
- (function (lambda (x) (if (memq sym (cdr x)) (throw 'foundit (car x)))))
- load-history)
- nil))
+ (dolist (entry load-history)
+ (when (memq sym (cdr entry))
+ (return (car entry)))))
(defun feature-symbols (feature)
"Return the file and list of symbols associated with a given FEATURE."
- (catch 'foundit
- (mapcar
- (function (lambda (x)
- (if (member (cons 'provide feature) (cdr x))
- (throw 'foundit x))))
- load-history)
- nil))
+ (let ((pair `(provide . ,feature)))
+ (dolist (entry load-history)
+ (when (member pair (cdr entry))
+ (return entry)))))
(defun feature-file (feature)
"Return the file name from which a given FEATURE was loaded.
Actually, return the load argument, if any; this is sometimes the name of a
Lisp file without an extension. If the feature came from an eval-buffer on
a buffer with no associated file, or an eval-region, return nil."
- (if (not (featurep feature))
- (error "%s is not a currently loaded feature" (symbol-name feature))
- (car (feature-symbols feature))))
+ (unless (featurep feature)
+ (error "%s is not a currently loaded feature" (symbol-name feature)))
+ (car (feature-symbols feature)))
+
+(defun file-symbols (file)
+ "Return the file and list of symbols associated with FILE.
+The file name in the returned list is the string used to load the file,
+and may not be the same string as FILE, but it will be equivalent."
+ (or (assoc file load-history)
+ (assoc (file-name-sans-extension file) load-history)
+ (assoc (concat file ".el") load-history)
+ (assoc (concat file ".elc") load-history)))
(defun file-provides (file)
"Return the list of features provided by FILE."
- (let ((symbols (or (cdr (assoc file load-history))
- (cdr (assoc (file-name-sans-extension file) load-history))
- (cdr (assoc (concat file ".el") load-history))
- (cdr (assoc (concat file ".elc") load-history))))
- (provides nil))
- (mapcar
- (function (lambda (x)
- (if (and (consp x) (eq (car x) 'provide))
- (setq provides (cons (cdr x) provides)))))
- symbols)
- provides
- ))
+ (let ((provides nil))
+ (dolist (x (cdr (file-symbols file)))
+ (when (eq (car-safe x) 'provide)
+ (push (cdr x) provides)))
+ provides))
(defun file-requires (file)
"Return the list of features required by FILE."
- (let ((symbols (cdr (assoc file load-history))) (requires nil))
- (mapcar
- (function (lambda (x)
- (if (and (consp x) (eq (car x) 'require))
- (setq requires (cons (cdr x) requires)))))
- symbols)
- requires
- ))
-
-(defun file-set-intersect (p q)
- ;; Return the set intersection of two lists
- (let ((ret nil))
- (mapcar
- (function (lambda (x) (if (memq x q) (setq ret (cons x ret)))))
- p)
- ret
- ))
+ (let ((requires nil))
+ (dolist (x (cdr (file-symbols file)))
+ (when (eq (car-safe x) 'require)
+ (push (cdr x) requires)))
+ requires))
(defun file-dependents (file)
"Return the list of loaded libraries that depend on FILE.
This can include FILE itself."
- (let ((provides (file-provides file)) (dependents nil))
- (mapcar
- (function (lambda (x)
- (if (file-set-intersect provides (file-requires (car x)))
- (setq dependents (cons (car x) dependents)))))
- load-history)
- dependents
- ))
+ (let ((provides (file-provides file))
+ (dependents nil))
+ (dolist (entry load-history)
+ (dolist (x (cdr entry))
+ (when (and (eq (car-safe x) 'require)
+ (memq (cdr-safe x) provides))
+ (push (car entry) dependents))))
+ dependents))
;; FSFmacs
;(defun read-feature (prompt)
;prompting with PROMPT and completing from `features', and
;return the feature \(symbol\)."
; (intern (completing-read prompt
-; (mapcar (function (lambda (feature)
-; (list (symbol-name feature))))
+; (mapcar #'(lambda (feature)
+; (list (symbol-name feature)))
; features)
; nil t)))
If the feature is required by any other loaded code, and optional FORCE
is nil, raise an error."
(interactive "SFeature: ")
- (if (not (featurep feature))
- (error "%s is not a currently loaded feature" (symbol-name feature)))
- (if (not force)
- (let* ((file (feature-file feature))
- (dependents (delete file (copy-sequence (file-dependents file)))))
- (if dependents
- (error "Loaded libraries %s depend on %s"
- (prin1-to-string dependents) file)
- )))
+ (unless (featurep feature)
+ (error "%s is not a currently loaded feature" (symbol-name feature)))
+ (when (not force)
+ (let* ((file (feature-file feature))
+ (dependents (delete file (copy-sequence (file-dependents file)))))
+ (when dependents
+ (error "Loaded libraries %s depend on %s"
+ (prin1-to-string dependents) file))))
(let* ((flist (feature-symbols feature)) (file (car flist)))
(mapcar
- (function (lambda (x)
- (cond ((stringp x) nil)
- ((consp x)
- ;; Remove any feature names that this file provided.
- (if (eq (car x) 'provide)
- (setq features (delq (cdr x) features))))
- ((boundp x) (makunbound x))
- ((fboundp x)
- (fmakunbound x)
- (let ((aload (get x 'autoload)))
- (if aload (fset x (cons 'autoload aload))))))))
+ #'(lambda (x)
+ (cond ((stringp x) nil)
+ ((consp x)
+ ;; Remove any feature names that this file provided.
+ (if (eq (car x) 'provide)
+ (setq features (delq (cdr x) features))))
+ ((boundp x) (makunbound x))
+ ((fboundp x)
+ (fmakunbound x)
+ (let ((aload (get x 'autoload)))
+ (if aload (fset x (cons 'autoload aload)))))))
(cdr flist))
;; Delete the load-history element for this file.
(let ((elt (assoc file load-history)))
projects / chise / xemacs-chise.git.1 / blobdiff