;; Copyright (C) 2009 Nikolaj Schumacher
;;
;; Author: Nikolaj Schumacher <bugs * nschum de>
-;; Version: 0.4
+;; Version: 0.4.3
;; Keywords: abbrev, convenience, matchis
;; URL: http://nschum.de/src/emacs/company/
;; Compatibility: GNU Emacs 22.x, GNU Emacs 23.x
;; ('meta (format "This value is named %s" arg))))
;;
;; Sometimes it is a good idea to mix two back-ends together, for example to
-;; enrich gtags with dabbrev text (to emulate local variables):
-;;
-;; (defun gtags-gtags-dabbrev-backend (command &optional arg &rest ignored)
-;; (case command
-;; (prefix (company-gtags 'prefix))
-;; (candidates (append (company-gtags 'candidates arg)
-;; (company-dabbrev 'candidates arg)))))
+;; enrich gtags with dabbrev-code results (to emulate local variables):
+;; To do this, add a list with the merged back-ends as an element in
+;; company-backends.
;;
;; Known Issues:
;; When point is at the very end of the buffer, the pseudo-tooltip appears very
;;
;;; Change Log:
;;
+;; 2009-05-07 (0.4.3)
+;; Added `company-other-backend'.
+;; Idle completion no longer interrupts multi-key command input.
+;; Added `company-ropemacs' and `company-pysmell' back-ends.
+;;
+;; 2009-04-25 (0.4.2)
+;; In C modes . and -> now count towards `company-minimum-prefix-length'.
+;; Reverted default front-end back to `company-preview-if-just-one-frontend'.
+;; The pseudo tooltip will no longer be clipped at the right window edge.
+;; Added `company-tooltip-minimum'.
+;; Windows compatibility fixes.
+;;
+;; 2009-04-19 (0.4.1)
+;; Added `global-company-mode'.
+;; Performance enhancements.
;; Added `company-eclim' back-end.
;; Added safer workaround for Emacs `posn-col-row' bug.
;;
(add-to-list 'debug-ignored-errors "^Company not ")
(add-to-list 'debug-ignored-errors "^No candidate number ")
(add-to-list 'debug-ignored-errors "^Cannot complete at point$")
+(add-to-list 'debug-ignored-errors "^No other back-end$")
(defgroup company nil
"Extensible inline text completion mechanism"
"*Face used for the selected common completion in the tool tip."
:group 'company)
-(defcustom company-tooltip-limit 10
- "*The maximum number of candidates in the tool tip"
- :group 'company
- :type 'integer)
-
(defface company-preview
'((t :background "blue4"
:foreground "wheat"))
(set variable value))
(defcustom company-frontends '(company-pseudo-tooltip-unless-just-one-frontend
- company-preview-frontend
+ company-preview-if-just-one-frontend
company-echo-metadata-frontend)
"*The list of active front-ends (visualizations).
Each front-end is a function that takes one argument. It is called with
company-preview-if-just-one-frontend)
(function :tag "custom function" nil))))
+(defcustom company-tooltip-limit 10
+ "*The maximum number of candidates in the tool tip"
+ :group 'company
+ :type 'integer)
+
+(defcustom company-tooltip-minimum 6
+ "*The minimum height of the tool tip.
+If this many lines are not available, prefer to display the tooltip above."
+ :group 'company
+ :type 'integer)
+
(defvar company-safe-backends
'((company-abbrev . "Abbrev")
(company-css . "CSS")
(company-keywords . "Programming language keywords")
(company-nxml . "nxml")
(company-oddmuse . "Oddmuse")
+ (company-pysmell . "PySmell")
+ (company-ropemacs . "ropemacs")
(company-semantic . "CEDET Semantic")
(company-tempo . "Tempo templates")
(company-xcode . "Xcode")))
(defcustom company-backends '(company-elisp company-nxml company-css
company-eclim company-semantic company-xcode
+ company-ropemacs
(company-gtags company-etags company-dabbrev-code
- company-keywords)
+ company-pysmell company-keywords)
company-oddmuse company-files company-dabbrev)
"*The list of active back-ends (completion engines).
Each list elements can itself be a list of back-ends. In that case their
completions are merged. Otherwise only the first matching back-end returns
results.
+`company-begin-backend' can be used to start a specific back-end,
+`company-other-backend' will skip to the next matching back-end in the list.
+
Each back-end is a function that takes a variable number of arguments.
The first argument is the command requested from the back-end. It is one
of the following:
'prefix: The back-end should return the text to be completed. It must be
text immediately before `point'. Returning nil passes control to the next
back-end. The function should return 'stop if it should complete but cannot
-\(e.g. if it is in the middle of a string\).
+\(e.g. if it is in the middle of a string\). If the returned value is only
+part of the prefix (e.g. the part after \"->\" in C), the back-end may return a
+cons of prefix and prefix length, which is then used in the
+`company-minimum-prefix-length' test.
'candidates: The second argument is the prefix to be completed. The
return value should be a list of candidates that start with the prefix.
company-safe-backends)
(symbol :tag "User defined"))))))
-(put 'company-backends 'safe-local-variable 'company-safe-backend-p)
+(put 'company-backends 'safe-local-variable 'company-safe-backends-p)
(defcustom company-completion-started-hook nil
"*Hook run when company starts completing.
keymap)
"Keymap that is enabled during an active completion.")
+(defvar company--disabled-backends nil)
+
(defun company-init-backend (backend)
(and (symbolp backend)
(not (fboundp backend))
(if (ignore-errors (funcall backend 'init) t)
(put backend 'company-init t)
(put backend 'company-init 'failed)
- (message "Company back-end '%s' could not be initialized"
- backend)
+ (unless (memq backend company--disabled-backends)
+ (message "Company back-end '%s' could not be initialized"
+ backend)
+ (push backend company--disabled-backends))
nil)
(mapc 'company-init-backend backend)))
+(defvar company-default-lighter " company")
+
+(defvar company-lighter company-default-lighter)
+(make-variable-buffer-local 'company-lighter)
+
;;;###autoload
(define-minor-mode company-mode
"\"complete anything\"; in in-buffer completion framework.
keymap during active completions (`company-active-map'):
\\{company-active-map}"
- nil " comp" company-mode-map
+ nil company-lighter company-mode-map
(if company-mode
(progn
(add-hook 'pre-command-hook 'company-pre-command nil t)
(company-cancel)
(kill-local-variable 'company-point)))
+(define-globalized-minor-mode global-company-mode company-mode
+ (lambda () (company-mode 1)))
+
(defsubst company-assert-enabled ()
(unless company-mode
(company-uninstall-map)
(car (setq ppss (cdr ppss)))
(nth 3 ppss))))
+(if (fboundp 'locate-dominating-file)
+ (defalias 'company-locate-dominating-file 'locate-dominating-file)
+ (defun company-locate-dominating-file (file name)
+ (catch 'root
+ (let ((dir (file-name-directory file))
+ (prev-dir nil))
+ (while (not (equal dir prev-dir))
+ (when (file-exists-p (expand-file-name name dir))
+ (throw 'root dir))
+ (setq prev-dir dir
+ dir (file-name-directory (directory-file-name dir))))))))
+
(defun company-call-backend (&rest args)
(if (functionp company-backend)
(apply company-backend args)
(defun company--should-complete ()
(and (not (or buffer-read-only overriding-terminal-local-map
overriding-local-map))
+ ;; Check if in the middle of entering a key combination.
+ (or (equal (this-command-keys-vector) [])
+ (not (keymapp (key-binding (this-command-keys-vector)))))
(eq company-idle-delay t)
(or (eq t company-begin-commands)
(memq this-command company-begin-commands)
(company-input-noop)
(company-post-command)))))
-(defun company-manual-begin ()
- (interactive)
+(defun company-auto-begin ()
(company-assert-enabled)
(and company-mode
(not company-candidates)
(let ((company-idle-delay t)
(company-minimum-prefix-length 0)
(company-begin-commands t))
- (setq company--explicit-action t)
(company-begin)))
;; Return non-nil if active.
company-candidates)
+(defun company-manual-begin ()
+ (interactive)
+ (setq company--explicit-action t)
+ (company-auto-begin))
+
+(defun company-other-backend (&optional backward)
+ (interactive (list current-prefix-arg))
+ (company-assert-enabled)
+ (if company-backend
+ (let* ((after (cdr (member company-backend company-backends)))
+ (before (cdr (member company-backend (reverse company-backends))))
+ (next (if backward
+ (append before (reverse after))
+ (append after (reverse before)))))
+ (company-cancel)
+ (dolist (backend next)
+ (when (ignore-errors (company-begin-backend backend))
+ (return t))))
+ (company-manual-begin))
+ (unless company-candidates
+ (error "No other back-end")))
+
(defun company-require-match-p ()
(let ((backend-value (company-call-backend 'require-match)))
(or (eq backend-value t)
(company-cancel company-prefix)
nil)))))
+(defun company--good-prefix-p (prefix)
+ (and (or (company-explicit-action-p)
+ (>= (or (cdr-safe prefix) (length prefix))
+ company-minimum-prefix-length))
+ (stringp (or (car-safe prefix) prefix))))
+
(defun company--continue ()
(when (company-call-backend 'no-cache company-prefix)
;; Don't complete existing candidates, fetch new ones.
(setq company-candidates-cache nil))
(let* ((new-prefix (company-call-backend 'prefix))
- (c (when (and (stringp new-prefix)
- (or (company-explicit-action-p)
- (>= (length new-prefix)
- company-minimum-prefix-length))
+ (c (when (and (company--good-prefix-p new-prefix)
+ (setq new-prefix (or (car-safe new-prefix) new-prefix))
(= (- (point) (length new-prefix))
(- company-point (length company-prefix))))
+ (setq new-prefix (or (car-safe new-prefix) new-prefix))
(company-calculate-candidates new-prefix))))
- (cond
- ((eq c t)
- ;; t means complete/unique.
- (company-cancel new-prefix)
- nil)
- ((consp c)
- ;; incremental match
- (setq company-prefix new-prefix)
- (company-update-candidates c)
- c)
- (t (company--continue-failed new-prefix)))))
+ (or (cond
+ ((eq c t)
+ ;; t means complete/unique.
+ (company-cancel new-prefix)
+ nil)
+ ((consp c)
+ ;; incremental match
+ (setq company-prefix new-prefix)
+ (company-update-candidates c)
+ c)
+ (t (company--continue-failed new-prefix)))
+ (company-cancel))))
(defun company--begin-new ()
(let (prefix c)
(funcall backend 'prefix))
(company--multi-backend-adapter backend 'prefix)))
(when prefix
- (when (and (stringp prefix)
- (>= (length prefix) company-minimum-prefix-length))
- (setq company-backend backend
- company-prefix prefix
+ (when (company--good-prefix-p prefix)
+ (setq prefix (or (car-safe prefix) prefix)
+ company-backend backend
c (company-calculate-candidates prefix))
;; t means complete/unique. We don't start, so no hooks.
(when (consp c)
+ (setq company-prefix prefix)
+ (when (symbolp backend)
+ (setq company-lighter (concat " " (symbol-name backend))))
(company-update-candidates c)
(run-hook-with-args 'company-completion-started-hook
(company-explicit-action-p))
(setq company-candidates
(or (and company-candidates (company--continue))
(and (company--should-complete) (company--begin-new))))
- (if company-candidates
- (progn
- (when (and company-end-of-buffer-workaround (eobp))
- (save-excursion (insert "\n"))
- (setq company-added-newline (buffer-chars-modified-tick)))
- (setq company-point (point)
- company--point-max (point-max))
- (company-enable-overriding-keymap company-active-map)
- (company-call-frontends 'update))
- (company-cancel)))
+ (when company-candidates
+ (when (and company-end-of-buffer-workaround (eobp))
+ (save-excursion (insert "\n"))
+ (setq company-added-newline (buffer-chars-modified-tick)))
+ (setq company-point (point)
+ company--point-max (point-max))
+ (company-enable-overriding-keymap company-active-map)
+ (company-call-frontends 'update)))
(defun company-cancel (&optional result)
(and company-added-newline
company-selection 0
company-selection-changed nil
company--explicit-action nil
+ company-lighter company-default-lighter
company--point-max nil
company-point nil)
(when company-timer
(message "%s" (error-message-string err))
(company-cancel))))
(when company-timer
- (cancel-timer company-timer))
+ (cancel-timer company-timer)
+ (setq company-timer nil))
(company-uninstall-map))
(defun company-post-command ()
(progn
(unless (equal (point) company-point)
(company-begin))
- (when company-candidates
- (company-call-frontends 'post-command))
- (and (numberp company-idle-delay)
- (or (eq t company-begin-commands)
- (memq this-command company-begin-commands))
- (setq company-timer
- (run-with-timer company-idle-delay nil 'company-idle-begin
- (current-buffer) (selected-window)
- (buffer-chars-modified-tick) (point)))))
+ (if company-candidates
+ (company-call-frontends 'post-command)
+ (and (numberp company-idle-delay)
+ (or (eq t company-begin-commands)
+ (memq this-command company-begin-commands))
+ (setq company-timer
+ (run-with-timer company-idle-delay nil
+ 'company-idle-begin
+ (current-buffer) (selected-window)
+ (buffer-chars-modified-tick) (point))))))
(error (message "Company: An error occurred in post-command")
(message "%s" (error-message-string err))
(company-cancel))))
(erase-buffer)
(current-buffer)))
-(defmacro company-electric (&rest body)
+(defmacro company--electric-do (&rest body)
(declare (indent 0) (debug t))
`(when (company-manual-begin)
(save-window-excursion
(defun company-show-doc-buffer ()
"Temporarily show a buffer with the complete documentation for the selection."
(interactive)
- (company-electric
+ (company--electric-do
(let ((selected (nth company-selection company-candidates)))
(display-buffer (or (company-call-backend 'doc-buffer selected)
(error "No documentation available")) t))))
(defun company-show-location ()
"Temporarily display a buffer showing the selected candidate in context."
(interactive)
- (company-electric
+ (company--electric-do
(let* ((selected (nth company-selection company-candidates))
(location (company-call-backend 'location selected))
(pos (or (cdr location) (error "No location available")))
(remove-hook 'company-completion-finished-hook company-callback t)
(remove-hook 'company-completion-cancelled-hook 'company-remove-callback t)
(remove-hook 'company-completion-finished-hook 'company-remove-callback t)
- (set-marker company-begin-with-marker nil))
+ (when company-begin-with-marker
+ (set-marker company-begin-with-marker nil)))
(defun company-begin-backend (backend &optional callback)
"Start a completion at point using BACKEND."
new
(company-safe-substring old (+ offset (length new)))))
-(defun company-replacement-string (old lines column nl)
+(defsubst company--length-limit (lst limit)
+ (if (nthcdr limit lst)
+ limit
+ (length lst)))
+
+(defun company--replacement-string (lines old column nl &optional align-top)
+
+ (let ((width (length (car lines))))
+ (when (> width (- (window-width) column))
+ (setq column (max 0 (- (window-width) width)))))
+
(let (new)
- ;; Inject into old lines.
+ (when align-top
+ ;; untouched lines first
+ (dotimes (i (- (length old) (length lines)))
+ (push (pop old) new)))
+ ;; length into old lines.
(while old
(push (company-modify-line (pop old) (pop lines) column) new))
;; Append whole new lines.
(mapconcat 'identity (nreverse new) "\n")
"\n")))
-(defun company-create-lines (column selection limit)
+(defun company--create-lines (selection limit)
(let ((len company-candidates-length)
(numbered 99999)
(dotimes (i len)
(setq width (max (length (pop lines-copy)) width)))
- (setq width (min width (- (window-width) column)))
+ (setq width (min width (window-width)))
(setq lines-copy lines)
;; show
-(defsubst company-pseudo-tooltip-height ()
- "Calculate the appropriate tooltip height."
- (max 3 (min company-tooltip-limit
- (- (window-height) 2
- (count-lines (window-start) (point-at-bol))))))
+(defsubst company--window-inner-height ()
+ (let ((edges (window-inside-edges (selected-window))))
+ (- (nth 3 edges) (nth 1 edges))))
+
+(defsubst company--pseudo-tooltip-height ()
+ "Calculate the appropriate tooltip height.
+Returns a negative number if the tooltip should be displayed above point."
+ (let* ((lines (count-lines (window-start) (point-at-bol)))
+ (below (- (company--window-inner-height) 1 lines)))
+ (if (and (< below (min company-tooltip-minimum company-candidates-length))
+ (> lines below))
+ (- (max 3 (min company-tooltip-limit lines)))
+ (max 3 (min company-tooltip-limit below)))))
(defun company-pseudo-tooltip-show (row column selection)
(company-pseudo-tooltip-hide)
(move-to-column 0)
- (let* ((height (company-pseudo-tooltip-height))
- (lines (company-create-lines column selection height))
- (nl (< (move-to-window-line row) row))
- (beg (point))
- (end (save-excursion
- (move-to-window-line (+ row height))
- (point)))
- (old-string
- (mapcar 'company-untabify (company-buffer-lines beg end)))
- str)
-
- (setq company-pseudo-tooltip-overlay (make-overlay beg end))
-
- (overlay-put company-pseudo-tooltip-overlay 'company-old old-string)
- (overlay-put company-pseudo-tooltip-overlay 'company-column column)
- (overlay-put company-pseudo-tooltip-overlay 'company-nl nl)
- (overlay-put company-pseudo-tooltip-overlay 'company-before
- (company-replacement-string old-string lines column nl))
- (overlay-put company-pseudo-tooltip-overlay 'company-height height)
-
- (overlay-put company-pseudo-tooltip-overlay 'window (selected-window)))))
+ (let* ((height (company--pseudo-tooltip-height))
+ above)
+
+ (when (< height 0)
+ (setq row (+ row height -1)
+ above t))
+
+ (let* ((nl (< (move-to-window-line row) row))
+ (beg (point))
+ (end (save-excursion
+ (move-to-window-line (+ row (abs height)))
+ (point)))
+ (ov (make-overlay beg end))
+ (args (list (mapcar 'company-untabify
+ (company-buffer-lines beg end))
+ column nl above)))
+
+ (setq company-pseudo-tooltip-overlay ov)
+ (overlay-put ov 'company-replacement-args args)
+ (overlay-put ov 'company-before
+ (apply 'company--replacement-string
+ (company--create-lines selection (abs height))
+ args))
+
+ (overlay-put ov 'company-column column)
+ (overlay-put ov 'company-height (abs height))
+ (overlay-put ov 'window (selected-window))))))
(defun company-pseudo-tooltip-show-at-point (pos)
(let ((col-row (company--col-row pos)))
company-selection))))
(defun company-pseudo-tooltip-edit (lines selection)
- (let* ((old-string (overlay-get company-pseudo-tooltip-overlay 'company-old))
- (column (overlay-get company-pseudo-tooltip-overlay 'company-column))
- (nl (overlay-get company-pseudo-tooltip-overlay 'company-nl))
- (height (overlay-get company-pseudo-tooltip-overlay 'company-height))
- (lines (company-create-lines column selection height)))
+ (let ((column (overlay-get company-pseudo-tooltip-overlay 'company-column))
+ (height (overlay-get company-pseudo-tooltip-overlay 'company-height)))
(overlay-put company-pseudo-tooltip-overlay 'company-before
- (company-replacement-string old-string lines column nl))))
+ (apply 'company--replacement-string
+ (company--create-lines selection height)
+ (overlay-get company-pseudo-tooltip-overlay
+ 'company-replacement-args)))))
(defun company-pseudo-tooltip-hide ()
(when company-pseudo-tooltip-overlay
(case command
('pre-command (company-pseudo-tooltip-hide-temporarily))
('post-command
- (unless (and (overlayp company-pseudo-tooltip-overlay)
- (equal (overlay-get company-pseudo-tooltip-overlay
- 'company-height)
- (company-pseudo-tooltip-height)))
- ;; Redraw needed.
- (company-pseudo-tooltip-show-at-point (- (point)
- (length company-prefix))))
+ (let ((old-height (if (overlayp company-pseudo-tooltip-overlay)
+ (overlay-get company-pseudo-tooltip-overlay
+ 'company-height)
+ 0))
+ (new-height (company--pseudo-tooltip-height)))
+ (unless (and (>= (* old-height new-height) 0)
+ (>= (abs old-height) (abs new-height)))
+ ;; Redraw needed.
+ (company-pseudo-tooltip-show-at-point (- (point)
+ (length company-prefix)))))
(company-pseudo-tooltip-unhide))
('hide (company-pseudo-tooltip-hide)
(setq company-tooltip-offset 0))