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+;;; auto-complete.el --- Auto Completion for GNU Emacs
+
+;; Copyright (C) 2008, 2009, 2010 Tomohiro Matsuyama
+
+;; Author: Tomohiro Matsuyama <m2ym.pub@gmail.com>
+;; URL: http://cx4a.org/software/auto-complete
+;; Keywords: completion, convenience
+;; Version: 1.3
+
+;; This program is free software; you can redistribute it and/or modify
+;; it under the terms of the GNU General Public License as published by
+;; the Free Software Foundation, either version 3 of the License, or
+;; (at your option) any later version.
+
+;; This program is distributed in the hope that it will be useful,
+;; but WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+;; GNU General Public License for more details.
+
+;; You should have received a copy of the GNU General Public License
+;; along with this program. If not, see <http://www.gnu.org/licenses/>.
+
+;;; Commentary:
+;;
+;; This extension provides a way to complete with popup menu like:
+;;
+;; def-!-
+;; +-----------------+
+;; |defun::::::::::::|
+;; |defvar |
+;; |defmacro |
+;; | ... |
+;; +-----------------+
+;;
+;; You can complete by typing and selecting menu.
+;;
+;; Entire documents are located in doc/ directory.
+;; Take a look for information.
+;;
+;; Enjoy!
+
+;;; Code:
+
+
+
+(eval-when-compile
+ (require 'cl))
+
+(require 'popup)
+
+;;;; Global stuff
+
+(defun ac-error (&optional var)
+ "Report an error and disable `auto-complete-mode'."
+ (ignore-errors
+ (message "auto-complete error: %s" var)
+ (auto-complete-mode -1)
+ var))
+
+
+
+;;;; Customization
+
+(defgroup auto-complete nil
+ "Auto completion."
+ :group 'completion
+ :prefix "ac-")
+
+(defcustom ac-delay 0.1
+ "Delay to completions will be available."
+ :type 'float
+ :group 'auto-complete)
+
+(defcustom ac-auto-show-menu 0.8
+ "Non-nil means completion menu will be automatically shown."
+ :type '(choice (const :tag "Yes" t)
+ (const :tag "Never" nil)
+ (float :tag "Timer"))
+ :group 'auto-complete)
+
+(defcustom ac-show-menu-immediately-on-auto-complete t
+ "Non-nil means menu will be showed immediately on `auto-complete'."
+ :type 'boolean
+ :group 'auto-complete)
+
+(defcustom ac-expand-on-auto-complete t
+ "Non-nil means expand whole common part on first time `auto-complete'."
+ :type 'boolean
+ :group 'auto-complete)
+
+(defcustom ac-disable-faces '(font-lock-comment-face font-lock-string-face font-lock-doc-face)
+ "Non-nil means disable automatic completion on specified faces."
+ :type '(repeat symbol)
+ :group 'auto-complete)
+
+(defcustom ac-stop-flymake-on-completing t
+ "Non-nil means disble flymake temporarily on completing."
+ :type 'boolean
+ :group 'auto-complete)
+
+(defcustom ac-use-fuzzy t
+ "Non-nil means use fuzzy matching."
+ :type 'boolean
+ :group 'auto-complete)
+
+(defcustom ac-fuzzy-cursor-color "red"
+ "Cursor color in fuzzy mode."
+ :type 'string
+ :group 'auto-complete)
+
+(defcustom ac-use-comphist t
+ "Non-nil means use intelligent completion history."
+ :type 'boolean
+ :group 'auto-complete)
+
+(defcustom ac-comphist-threshold 0.7
+ "Percentage of ignoring low scored candidates."
+ :type 'float
+ :group 'auto-complete)
+
+(defcustom ac-comphist-file
+ (expand-file-name (concat (if (boundp 'user-emacs-directory)
+ user-emacs-directory
+ "~/.emacs.d/")
+ "/ac-comphist.dat"))
+ "Completion history file name."
+ :type 'string
+ :group 'auto-complete)
+
+(defcustom ac-use-quick-help t
+ "Non-nil means use quick help."
+ :type 'boolean
+ :group 'auto-complete)
+
+(defcustom ac-quick-help-delay 1.5
+ "Delay to show quick help."
+ :type 'float
+ :group 'auto-complete)
+
+(defcustom ac-menu-height 10
+ "Max height of candidate menu."
+ :type 'integer
+ :group 'auto-complete)
+(defvaralias 'ac-candidate-menu-height 'ac-menu-height)
+
+(defcustom ac-quick-help-height 20
+ "Max height of quick help."
+ :type 'integer
+ :group 'auto-complete)
+
+(defcustom ac-quick-help-prefer-x t
+ "Prefer X tooltip than overlay popup for displaying quick help."
+ :type 'boolean
+ :group 'auto-complete)
+
+(defcustom ac-candidate-limit nil
+ "Limit number of candidates. Non-integer means no limit."
+ :type 'integer
+ :group 'auto-complete)
+(defvaralias 'ac-candidate-max 'ac-candidate-limit)
+
+(defcustom ac-modes
+ '(emacs-lisp-mode
+ lisp-interaction-mode
+ c-mode cc-mode c++-mode
+ java-mode clojure-mode scala-mode
+ scheme-mode
+ ocaml-mode tuareg-mode
+ perl-mode cperl-mode python-mode ruby-mode
+ ecmascript-mode javascript-mode js-mode js2-mode php-mode css-mode
+ makefile-mode sh-mode fortran-mode f90-mode ada-mode
+ xml-mode sgml-mode)
+ "Major modes `auto-complete-mode' can run on."
+ :type '(repeat symbol)
+ :group 'auto-complete)
+
+(defcustom ac-compatible-packages-regexp
+ "^ac-"
+ "Regexp to indicate what packages can work with auto-complete."
+ :type 'string
+ :group 'auto-complete)
+
+(defcustom ac-trigger-commands
+ '(self-insert-command)
+ "Trigger commands that specify whether `auto-complete' should start or not."
+ :type '(repeat symbol)
+ :group 'auto-complete)
+
+(defcustom ac-trigger-commands-on-completing
+ '(delete-backward-char
+ backward-delete-char
+ backward-delete-char-untabify)
+ "Trigger commands that specify whether `auto-complete' should continue or not."
+ :type '(repeat symbol)
+ :group 'auto-complete)
+
+(defcustom ac-trigger-key nil
+ "Non-nil means `auto-complete' will start by typing this key.
+If you specify this TAB, for example, `auto-complete' will start by typing TAB,
+and if there is no completions, an original command will be fallbacked."
+ :type 'string
+ :group 'auto-complete
+ :set (lambda (symbol value)
+ (set-default symbol value)
+ (when (and value
+ (fboundp 'ac-set-trigger-key))
+ (ac-set-trigger-key value))))
+
+(defcustom ac-auto-start 2
+ "Non-nil means completion will be started automatically.
+Positive integer means if a length of a word you entered is larger than the value,
+completion will be started automatically.
+If you specify `nil', never be started automatically."
+ :type '(choice (const :tag "Yes" t)
+ (const :tag "Never" nil)
+ (integer :tag "Require"))
+ :group 'auto-complete)
+
+(defcustom ac-ignores nil
+ "List of string to ignore completion."
+ :type '(repeat string)
+ :group 'auto-complete)
+
+(defcustom ac-ignore-case 'smart
+ "Non-nil means auto-complete ignores case.
+If this value is `smart', auto-complete ignores case only when
+a prefix doen't contain any upper case letters."
+ :type '(choice (const :tag "Yes" t)
+ (const :tag "Smart" smart)
+ (const :tag "No" nil))
+ :group 'auto-complete)
+
+(defcustom ac-dwim t
+ "Non-nil means `auto-complete' works based on Do What I Mean."
+ :type 'boolean
+ :group 'auto-complete)
+
+(defcustom ac-use-menu-map nil
+ "Non-nil means a special keymap `ac-menu-map' on completing menu will be used."
+ :type 'boolean
+ :group 'auto-complete)
+
+(defcustom ac-use-overriding-local-map nil
+ "Non-nil means `overriding-local-map' will be used to hack for overriding key events on auto-copletion."
+ :type 'boolean
+ :group 'auto-complete)
+
+(defface ac-completion-face
+ '((t (:foreground "darkgray" :underline t)))
+ "Face for inline completion"
+ :group 'auto-complete)
+
+(defface ac-candidate-face
+ '((t (:background "lightgray" :foreground "black")))
+ "Face for candidate."
+ :group 'auto-complete)
+
+(defface ac-selection-face
+ '((t (:background "steelblue" :foreground "white")))
+ "Face for selected candidate."
+ :group 'auto-complete)
+
+(defvar auto-complete-mode-hook nil
+ "Hook for `auto-complete-mode'.")
+
+
+
+;;;; Internal variables
+
+(defvar auto-complete-mode nil
+ "Dummy variable to suppress compiler warnings.")
+
+(defvar ac-cursor-color nil
+ "Old cursor color.")
+
+(defvar ac-inline nil
+ "Inline completion instance.")
+
+(defvar ac-menu nil
+ "Menu instance.")
+
+(defvar ac-show-menu nil
+ "Flag to show menu on timer tick.")
+
+(defvar ac-last-completion nil
+ "Cons of prefix marker and selected item of last completion.")
+
+(defvar ac-quick-help nil
+ "Quick help instance")
+
+(defvar ac-completing nil
+ "Non-nil means `auto-complete-mode' is now working on completion.")
+
+(defvar ac-buffer nil
+ "Buffer where auto-complete is started.")
+
+(defvar ac-point nil
+ "Start point of prefix.")
+
+(defvar ac-last-point nil
+ "Last point of updating pattern.")
+
+(defvar ac-prefix nil
+ "Prefix string.")
+(defvaralias 'ac-target 'ac-prefix)
+
+(defvar ac-selected-candidate nil
+ "Last selected candidate.")
+
+(defvar ac-common-part nil
+ "Common part string of meaningful candidates.
+If there is no common part, this will be nil.")
+
+(defvar ac-whole-common-part nil
+ "Common part string of whole candidates.
+If there is no common part, this will be nil.")
+
+(defvar ac-prefix-overlay nil
+ "Overlay for prefix string.")
+
+(defvar ac-timer nil
+ "Completion idle timer.")
+
+(defvar ac-show-menu-timer nil
+ "Show menu idle timer.")
+
+(defvar ac-quick-help-timer nil
+ "Quick help idle timer.")
+
+(defvar ac-triggered nil
+ "Flag to update.")
+
+(defvar ac-limit nil
+ "Limit number of candidates for each sources.")
+
+(defvar ac-candidates nil
+ "Current candidates.")
+
+(defvar ac-candidates-cache nil
+ "Candidates cache for individual sources.")
+
+(defvar ac-fuzzy-enable nil
+ "Non-nil means fuzzy matching is enabled.")
+
+(defvar ac-dwim-enable nil
+ "Non-nil means DWIM completion will be allowed.")
+
+(defvar ac-mode-map (make-sparse-keymap)
+ "Auto-complete mode map. It is also used for trigger key command. See also `ac-trigger-key'.")
+
+(defvar ac-completing-map
+ (let ((map (make-sparse-keymap)))
+ (define-key map "\t" 'ac-expand)
+ (define-key map "\r" 'ac-complete)
+ (define-key map (kbd "M-TAB") 'auto-complete)
+ (define-key map "\C-s" 'ac-isearch)
+
+ (define-key map "\M-n" 'ac-next)
+ (define-key map "\M-p" 'ac-previous)
+ (define-key map [down] 'ac-next)
+ (define-key map [up] 'ac-previous)
+
+ (define-key map [f1] 'ac-help)
+ (define-key map [M-f1] 'ac-persist-help)
+ (define-key map (kbd "C-?") 'ac-help)
+ (define-key map (kbd "C-M-?") 'ac-persist-help)
+
+ (define-key map [C-down] 'ac-quick-help-scroll-down)
+ (define-key map [C-up] 'ac-quick-help-scroll-up)
+ (define-key map "\C-\M-n" 'ac-quick-help-scroll-down)
+ (define-key map "\C-\M-p" 'ac-quick-help-scroll-up)
+
+ (dotimes (i 9)
+ (let ((symbol (intern (format "ac-complete-%d" (1+ i)))))
+ (fset symbol
+ `(lambda ()
+ (interactive)
+ (when (and (ac-menu-live-p) (popup-select ac-menu ,i))
+ (ac-complete))))
+ (define-key map (read-kbd-macro (format "M-%s" (1+ i))) symbol)))
+
+ map)
+ "Keymap for completion.")
+(defvaralias 'ac-complete-mode-map 'ac-completing-map)
+
+(defvar ac-menu-map
+ (let ((map (make-sparse-keymap)))
+ (define-key map "\C-n" 'ac-next)
+ (define-key map "\C-p" 'ac-previous)
+ (set-keymap-parent map ac-completing-map)
+ map)
+ "Keymap for completion on completing menu.")
+
+(defvar ac-current-map
+ (let ((map (make-sparse-keymap)))
+ (set-keymap-parent map ac-completing-map)
+ map))
+
+(defvar ac-match-function 'all-completions
+ "Default match function.")
+
+(defvar ac-prefix-definitions
+ '((symbol . ac-prefix-symbol)
+ (file . ac-prefix-file)
+ (valid-file . ac-prefix-valid-file)
+ (c-dot . ac-prefix-c-dot)
+ (c-dot-ref . ac-prefix-c-dot-ref))
+ "Prefix definitions for common use.")
+
+(defvar ac-sources '(ac-source-words-in-same-mode-buffers)
+ "Sources for completion.")
+(make-variable-buffer-local 'ac-sources)
+
+(defvar ac-compiled-sources nil
+ "Compiled source of `ac-sources'.")
+
+(defvar ac-current-sources nil
+ "Current working sources. This is sublist of `ac-compiled-sources'.")
+
+(defvar ac-omni-completion-sources nil
+ "Do not use this anymore.")
+
+(defvar ac-current-prefix-def nil)
+
+(defvar ac-ignoring-prefix-def nil)
+
+
+
+;;;; Intelligent completion history
+
+(defvar ac-comphist nil
+ "Database of completion history.")
+
+(defsubst ac-comphist-make-tab ()
+ (make-hash-table :test 'equal))
+
+(defsubst ac-comphist-tab (db)
+ (nth 0 db))
+
+(defsubst ac-comphist-cache (db)
+ (nth 1 db))
+
+(defun ac-comphist-make (&optional tab)
+ (list (or tab (ac-comphist-make-tab)) (make-hash-table :test 'equal :weakness t)))
+
+(defun ac-comphist-get (db string &optional create)
+ (let* ((tab (ac-comphist-tab db))
+ (index (gethash string tab)))
+ (when (and create (null index))
+ (setq index (make-vector (length string) 0))
+ (puthash string index tab))
+ index))
+
+(defun ac-comphist-add (db string prefix)
+ (setq prefix (min prefix (1- (length string))))
+ (when (<= 0 prefix)
+ (setq string (substring-no-properties string))
+ (let ((stat (ac-comphist-get db string t)))
+ (incf (aref stat prefix))
+ (remhash string (ac-comphist-cache db)))))
+
+(defun ac-comphist-score (db string prefix)
+ (setq prefix (min prefix (1- (length string))))
+ (if (<= 0 prefix)
+ (let ((cache (gethash string (ac-comphist-cache db))))
+ (or (and cache (aref cache prefix))
+ (let ((stat (ac-comphist-get db string))
+ (score 0.0))
+ (when stat
+ (loop for p from 0 below (length string)
+ ;; sigmoid function
+ with a = 5
+ with d = (/ 6.0 a)
+ for x = (- d (abs (- prefix p)))
+ for r = (/ 1.0 (1+ (exp (* (- a) x))))
+ do
+ (incf score (* (aref stat p) r))))
+ ;; Weight by distance
+ (incf score (max 0.0 (- 0.3 (/ (- (length string) prefix) 100.0))))
+ (unless cache
+ (setq cache (make-vector (length string) nil))
+ (puthash string cache (ac-comphist-cache db)))
+ (aset cache prefix score)
+ score)))
+ 0.0))
+
+(defun ac-comphist-sort (db collection prefix &optional threshold)
+ (let (result
+ (n 0)
+ (total 0)
+ (cur 0))
+ (setq result (mapcar (lambda (a)
+ (when (and cur threshold)
+ (if (>= cur (* total threshold))
+ (setq cur nil)
+ (incf n)
+ (incf cur (cdr a))))
+ (car a))
+ (sort (mapcar (lambda (string)
+ (let ((score (ac-comphist-score db string prefix)))
+ (incf total score)
+ (cons string score)))
+ collection)
+ (lambda (a b) (< (cdr b) (cdr a))))))
+ (if threshold
+ (cons n result)
+ result)))
+
+(defun ac-comphist-serialize (db)
+ (let (alist)
+ (maphash (lambda (k v)
+ (push (cons k v) alist))
+ (ac-comphist-tab db))
+ (list alist)))
+
+(defun ac-comphist-deserialize (sexp)
+ (condition-case nil
+ (ac-comphist-make (let ((tab (ac-comphist-make-tab)))
+ (mapc (lambda (cons)
+ (puthash (car cons) (cdr cons) tab))
+ (nth 0 sexp))
+ tab))
+ (error (message "Invalid comphist db.") nil)))
+
+(defun ac-comphist-init ()
+ (ac-comphist-load)
+ (add-hook 'kill-emacs-hook 'ac-comphist-save))
+
+(defun ac-comphist-load ()
+ (interactive)
+ (let ((db (if (file-exists-p ac-comphist-file)
+ (ignore-errors
+ (with-temp-buffer
+ (insert-file-contents ac-comphist-file)
+ (goto-char (point-min))
+ (ac-comphist-deserialize (read (current-buffer))))))))
+ (setq ac-comphist (or db (ac-comphist-make)))))
+
+(defun ac-comphist-save ()
+ (interactive)
+ (require 'pp)
+ (ignore-errors
+ (with-temp-buffer
+ (pp (ac-comphist-serialize ac-comphist) (current-buffer))
+ (write-region (point-min) (point-max) ac-comphist-file))))
+
+
+
+;;;; Auto completion internals
+
+(defun ac-menu-at-wrapper-line-p ()
+ "Return non-nil if current line is long and wrapped to next visual line."
+ (and (not truncate-lines)
+ (eq (line-beginning-position)
+ (save-excursion
+ (vertical-motion 1)
+ (line-beginning-position)))))
+
+(defun ac-prefix-symbol ()
+ "Default prefix definition function."
+ (require 'thingatpt)
+ (car-safe (bounds-of-thing-at-point 'symbol)))
+(defalias 'ac-prefix-default 'ac-prefix-symbol)
+
+(defun ac-prefix-file ()
+ "File prefix."
+ (let ((point (re-search-backward "[\"<>' \t\r\n]" nil t)))
+ (if point (1+ point))))
+
+(defun ac-prefix-valid-file ()
+ "Existed (or to be existed) file prefix."
+ (let* ((line-beg (line-beginning-position))
+ (end (point))
+ (start (or (let ((point (re-search-backward "[\"<>'= \t\r\n]" line-beg t)))
+ (if point (1+ point)))
+ line-beg))
+ (file (buffer-substring start end)))
+ (if (and file (or (string-match "^/" file)
+ (and (setq file (and (string-match "^[^/]*/" file)
+ (match-string 0 file)))
+ (file-directory-p file))))
+ start)))
+
+(defun ac-prefix-c-dot ()
+ "C-like languages dot(.) prefix."
+ (if (re-search-backward "\\.\\(\\(?:[a-zA-Z0-9][_a-zA-Z0-9]*\\)?\\)\\=" nil t)
+ (match-beginning 1)))
+
+(defun ac-prefix-c-dot-ref ()
+ "C-like languages dot(.) and reference(->) prefix."
+ (if (re-search-backward "\\(?:\\.\\|->\\)\\(\\(?:[a-zA-Z0-9][_a-zA-Z0-9]*\\)?\\)\\=" nil t)
+ (match-beginning 1)))
+
+(defun ac-define-prefix (name prefix)
+ "Define new prefix definition.
+You can not use it in source definition like (prefix . `NAME')."
+ (push (cons name prefix) ac-prefix-definitions))
+
+(defun ac-match-substring (prefix candidates)
+ (loop with regexp = (regexp-quote prefix)
+ for candidate in candidates
+ if (string-match regexp candidate)
+ collect candidate))
+
+(defsubst ac-source-entity (source)
+ (if (symbolp source)
+ (symbol-value source)
+ source))
+
+(defun ac-source-available-p (source)
+ (if (and (symbolp source)
+ (get source 'available))
+ (eq (get source 'available) t)
+ (let* ((src (ac-source-entity source))
+ (avail-pair (assq 'available src))
+ (avail-cond (cdr avail-pair))
+ (available (and (if avail-pair
+ (cond
+ ((symbolp avail-cond)
+ (funcall avail-cond))
+ ((listp avail-cond)
+ (eval avail-cond)))
+ t)
+ (loop for feature in (assoc-default 'depends src)
+ unless (require feature nil t) return nil
+ finally return t))))
+ (if (symbolp source)
+ (put source 'available (if available t 'no)))
+ available)))
+
+(defun ac-compile-sources (sources)
+ "Compiled `SOURCES' into expanded sources style."
+ (loop for source in sources
+ if (ac-source-available-p source)
+ do
+ (setq source (ac-source-entity source))
+ (flet ((add-attribute (name value &optional append) (add-to-list 'source (cons name value) append)))
+ ;; prefix
+ (let* ((prefix (assoc 'prefix source))
+ (real (assoc-default (cdr prefix) ac-prefix-definitions)))
+ (cond
+ (real
+ (add-attribute 'prefix real))
+ ((null prefix)
+ (add-attribute 'prefix 'ac-prefix-default))))
+ ;; match
+ (let ((match (assq 'match source)))
+ (cond
+ ((eq (cdr match) 'substring)
+ (setcdr match 'ac-match-substring)))))
+ and collect source))
+
+(defun ac-compiled-sources ()
+ (or ac-compiled-sources
+ (setq ac-compiled-sources
+ (ac-compile-sources ac-sources))))
+
+(defsubst ac-menu-live-p ()
+ (popup-live-p ac-menu))
+
+(defun ac-menu-create (point width height)
+ (setq ac-menu
+ (popup-create point width height
+ :around t
+ :face 'ac-candidate-face
+ :selection-face 'ac-selection-face
+ :symbol t
+ :scroll-bar t
+ :margin-left 1)))
+
+(defun ac-menu-delete ()
+ (when ac-menu
+ (popup-delete ac-menu)
+ (setq ac-menu)))
+
+(defsubst ac-inline-marker ()
+ (nth 0 ac-inline))
+
+(defsubst ac-inline-overlay ()
+ (nth 1 ac-inline))
+
+(defsubst ac-inline-live-p ()
+ (and ac-inline (ac-inline-overlay) t))
+
+(defun ac-inline-show (point string)
+ (unless ac-inline
+ (setq ac-inline (list (make-marker) nil)))
+ (save-excursion
+ (let ((overlay (ac-inline-overlay))
+ (width 0)
+ (string-width (string-width string))
+ (length 0)
+ (original-string string))
+ ;; Calculate string space to show completion
+ (goto-char point)
+ (let (c)
+ (while (and (not (eolp))
+ (< width string-width)
+ (setq c (char-after))
+ (not (eq c ?\t))) ; special case for tab
+ (incf width (char-width c))
+ (incf length)
+ (forward-char)))
+
+ ;; Show completion
+ (goto-char point)
+ (cond
+ ((= width 0)
+ (set-marker (ac-inline-marker) point)
+ (let ((buffer-undo-list t))
+ (insert " "))
+ (setq width 1
+ length 1))
+ ((<= width string-width)
+ ;; No space to show
+ ;; Do nothing
+ )
+ ((> width string-width)
+ ;; Need to fill space
+ (setq string (concat string (make-string (- width string-width) ? )))))
+ (setq string (propertize string 'face 'ac-completion-face))
+ (if overlay
+ (progn
+ (move-overlay overlay point (+ point length))
+ (overlay-put overlay 'invisible nil))
+ (setq overlay (make-overlay point (+ point length)))
+ (setf (nth 1 ac-inline) overlay)
+ (overlay-put overlay 'priority 9999)
+ ;; Help prefix-overlay in some cases
+ (overlay-put overlay 'keymap ac-current-map))
+ (overlay-put overlay 'display (substring string 0 1))
+ ;; TODO no width but char
+ (overlay-put overlay 'after-string (substring string 1))
+ (overlay-put overlay 'string original-string))))
+
+(defun ac-inline-delete ()
+ (when (ac-inline-live-p)
+ (ac-inline-hide)
+ (delete-overlay (ac-inline-overlay))
+ (setq ac-inline nil)))
+
+(defun ac-inline-hide ()
+ (when (ac-inline-live-p)
+ (let ((overlay (ac-inline-overlay))
+ (marker (ac-inline-marker))
+ (buffer-undo-list t))
+ (when overlay
+ (when (marker-position marker)
+ (save-excursion
+ (goto-char marker)
+ (delete-char 1)
+ (set-marker marker nil)))
+ (move-overlay overlay (point-min) (point-min))
+ (overlay-put overlay 'invisible t)
+ (overlay-put overlay 'display nil)
+ (overlay-put overlay 'after-string nil)))))
+
+(defun ac-inline-update ()
+ (if (and ac-completing ac-prefix (stringp ac-common-part))
+ (let ((common-part-length (length ac-common-part))
+ (prefix-length (length ac-prefix)))
+ (if (> common-part-length prefix-length)
+ (progn
+ (ac-inline-hide)
+ (ac-inline-show (point) (substring ac-common-part prefix-length)))
+ (ac-inline-delete)))
+ (ac-inline-delete)))
+
+(defun ac-put-prefix-overlay ()
+ (unless ac-prefix-overlay
+ (let (newline)
+ ;; Insert newline to make sure that cursor always on the overlay
+ (when (and (eq ac-point (point-max))
+ (eq ac-point (point)))
+ (popup-save-buffer-state
+ (insert "\n"))
+ (setq newline t))
+ (setq ac-prefix-overlay (make-overlay ac-point (1+ (point)) nil t t))
+ (overlay-put ac-prefix-overlay 'priority 9999)
+ (overlay-put ac-prefix-overlay 'keymap (make-sparse-keymap))
+ (overlay-put ac-prefix-overlay 'newline newline))))
+
+(defun ac-remove-prefix-overlay ()
+ (when ac-prefix-overlay
+ (when (overlay-get ac-prefix-overlay 'newline)
+ ;; Remove inserted newline
+ (popup-save-buffer-state
+ (goto-char (point-max))
+ (if (eq (char-before) ?\n)
+ (delete-char -1))))
+ (delete-overlay ac-prefix-overlay)))
+
+(defun ac-activate-completing-map ()
+ (if (and ac-show-menu ac-use-menu-map)
+ (set-keymap-parent ac-current-map ac-menu-map))
+ (when (and ac-use-overriding-local-map
+ (null overriding-terminal-local-map))
+ (setq overriding-terminal-local-map ac-current-map))
+ (when ac-prefix-overlay
+ (set-keymap-parent (overlay-get ac-prefix-overlay 'keymap) ac-current-map)))
+
+(defun ac-deactivate-completing-map ()
+ (set-keymap-parent ac-current-map ac-completing-map)
+ (when (and ac-use-overriding-local-map
+ (eq overriding-terminal-local-map ac-current-map))
+ (setq overriding-terminal-local-map nil))
+ (when ac-prefix-overlay
+ (set-keymap-parent (overlay-get ac-prefix-overlay 'keymap) nil)))
+
+(defsubst ac-selected-candidate ()
+ (if ac-menu
+ (popup-selected-item ac-menu)))
+
+(defun ac-prefix (requires ignore-list)
+ (loop with current = (point)
+ with point
+ with prefix-def
+ with sources
+ for source in (ac-compiled-sources)
+ for prefix = (assoc-default 'prefix source)
+ for req = (or (assoc-default 'requires source) requires 1)
+
+ if (null prefix-def)
+ do
+ (unless (member prefix ignore-list)
+ (save-excursion
+ (setq point (cond
+ ((symbolp prefix)
+ (funcall prefix))
+ ((stringp prefix)
+ (and (re-search-backward (concat prefix "\\=") nil t)
+ (or (match-beginning 1) (match-beginning 0))))
+ ((stringp (car-safe prefix))
+ (let ((regexp (nth 0 prefix))
+ (end (nth 1 prefix))
+ (group (nth 2 prefix)))
+ (and (re-search-backward (concat regexp "\\=") nil t)
+ (funcall (if end 'match-end 'match-beginning)
+ (or group 0)))))
+ (t
+ (eval prefix))))
+ (if (and point
+ (integerp req)
+ (< (- current point) req))
+ (setq point nil))
+ (if point
+ (setq prefix-def prefix))))
+
+ if (equal prefix prefix-def) do (push source sources)
+
+ finally return
+ (and point (list prefix-def point (nreverse sources)))))
+
+(defun ac-init ()
+ "Initialize current sources to start completion."
+ (setq ac-candidates-cache nil)
+ (loop for source in ac-current-sources
+ for function = (assoc-default 'init source)
+ if function do
+ (save-excursion
+ (cond
+ ((functionp function)
+ (funcall function))
+ (t
+ (eval function))))))
+
+(defun ac-candidates-1 (source)
+ (let* ((do-cache (assq 'cache source))
+ (function (assoc-default 'candidates source))
+ (action (assoc-default 'action source))
+ (document (assoc-default 'document source))
+ (symbol (assoc-default 'symbol source))
+ (ac-limit (or (assoc-default 'limit source) ac-limit))
+ (face (or (assoc-default 'face source) (assoc-default 'candidate-face source)))
+ (selection-face (assoc-default 'selection-face source))
+ (cache (and do-cache (assq source ac-candidates-cache)))
+ (candidates (cdr cache)))
+ (unless cache
+ (setq candidates (save-excursion
+ (cond
+ ((functionp function)
+ (funcall function))
+ (t
+ (eval function)))))
+ ;; Convert (name value) format candidates into name with text properties.
+ (setq candidates (mapcar (lambda (candidate)
+ (if (consp candidate)
+ (propertize (car candidate) 'value (cdr candidate))
+ candidate))
+ candidates))
+ (when do-cache
+ (push (cons source candidates) ac-candidates-cache)))
+ (setq candidates (funcall (or (assoc-default 'match source)
+ ac-match-function)
+ ac-prefix candidates))
+ ;; Remove extra items regarding to ac-limit
+ (if (and (integerp ac-limit) (> ac-limit 1) (> (length candidates) ac-limit))
+ (setcdr (nthcdr (1- ac-limit) candidates) nil))
+ ;; Put candidate properties
+ (setq candidates (mapcar (lambda (candidate)
+ (popup-item-propertize candidate
+ 'action action
+ 'symbol symbol
+ 'document document
+ 'popup-face face
+ 'selection-face selection-face))
+ candidates))
+ candidates))
+
+(defun ac-candidates ()
+ "Produce candidates for current sources."
+ (loop with completion-ignore-case = (or (eq ac-ignore-case t)
+ (and (eq ac-ignore-case 'smart)
+ (let ((case-fold-search nil)) (not (string-match "[[:upper:]]" ac-prefix)))))
+ with case-fold-search = completion-ignore-case
+ with prefix-len = (length ac-prefix)
+ for source in ac-current-sources
+ append (ac-candidates-1 source) into candidates
+ finally return
+ (progn
+ (delete-dups candidates)
+ (if (and ac-use-comphist ac-comphist)
+ (if ac-show-menu
+ (let* ((pair (ac-comphist-sort ac-comphist candidates prefix-len ac-comphist-threshold))
+ (n (car pair))
+ (result (cdr pair))
+ (cons (if (> n 0) (nthcdr (1- n) result)))
+ (cdr (cdr cons)))
+ (if cons (setcdr cons nil))
+ (setq ac-common-part (try-completion ac-prefix result))
+ (setq ac-whole-common-part (try-completion ac-prefix candidates))
+ (if cons (setcdr cons cdr))
+ result)
+ (setq candidates (ac-comphist-sort ac-comphist candidates prefix-len))
+ (setq ac-common-part (if candidates (popup-x-to-string (car candidates))))
+ (setq ac-whole-common-part (try-completion ac-prefix candidates))
+ candidates)
+ (setq ac-common-part (try-completion ac-prefix candidates))
+ (setq ac-whole-common-part ac-common-part)
+ candidates))))
+
+(defun ac-update-candidates (cursor scroll-top)
+ "Update candidates of menu to `ac-candidates' and redraw it."
+ (setf (popup-cursor ac-menu) cursor
+ (popup-scroll-top ac-menu) scroll-top)
+ (setq ac-dwim-enable (= (length ac-candidates) 1))
+ (if ac-candidates
+ (progn
+ (setq ac-completing t)
+ (ac-activate-completing-map))
+ (setq ac-completing nil)
+ (ac-deactivate-completing-map))
+ (ac-inline-update)
+ (popup-set-list ac-menu ac-candidates)
+ (if (and (not ac-fuzzy-enable)
+ (<= (length ac-candidates) 1))
+ (popup-hide ac-menu)
+ (if ac-show-menu
+ (popup-draw ac-menu))))
+
+(defun ac-reposition ()
+ "Force to redraw candidate menu with current `ac-candidates'."
+ (let ((cursor (popup-cursor ac-menu))
+ (scroll-top (popup-scroll-top ac-menu)))
+ (ac-menu-delete)
+ (ac-menu-create ac-point (popup-preferred-width ac-candidates) (popup-height ac-menu))
+ (ac-update-candidates cursor scroll-top)))
+
+(defun ac-cleanup ()
+ "Cleanup auto completion."
+ (if ac-cursor-color
+ (set-cursor-color ac-cursor-color))
+ (when (and ac-use-comphist ac-comphist)
+ (when (and (null ac-selected-candidate)
+ (member ac-prefix ac-candidates))
+ ;; Assume candidate is selected by just typing
+ (setq ac-selected-candidate ac-prefix)
+ (setq ac-last-point ac-point))
+ (when ac-selected-candidate
+ (ac-comphist-add ac-comphist
+ ac-selected-candidate
+ (if ac-last-point
+ (- ac-last-point ac-point)
+ (length ac-prefix)))))
+ (ac-deactivate-completing-map)
+ (ac-remove-prefix-overlay)
+ (ac-remove-quick-help)
+ (ac-inline-delete)
+ (ac-menu-delete)
+ (ac-cancel-timer)
+ (ac-cancel-show-menu-timer)
+ (ac-cancel-quick-help-timer)
+ (setq ac-cursor-color nil
+ ac-inline nil
+ ac-show-menu nil
+ ac-menu nil
+ ac-completing nil
+ ac-point nil
+ ac-last-point nil
+ ac-prefix nil
+ ac-prefix-overlay nil
+ ac-selected-candidate nil
+ ac-common-part nil
+ ac-whole-common-part nil
+ ac-triggered nil
+ ac-limit nil
+ ac-candidates nil
+ ac-candidates-cache nil
+ ac-fuzzy-enable nil
+ ac-dwim-enable nil
+ ac-compiled-sources nil
+ ac-current-sources nil
+ ac-current-prefix-def nil
+ ac-ignoring-prefix-def nil))
+
+(defsubst ac-abort ()
+ "Abort completion."
+ (ac-cleanup))
+
+(defun ac-expand-string (string &optional remove-undo-boundary)
+ "Expand `STRING' into the buffer and update `ac-prefix' to `STRING'.
+This function records deletion and insertion sequences by `undo-boundary'.
+If `remove-undo-boundary' is non-nil, this function also removes `undo-boundary'
+that have been made before in this function."
+ (when (not (equal string (buffer-substring ac-point (point))))
+ (undo-boundary)
+ ;; We can't use primitive-undo since it undoes by
+ ;; groups, divided by boundaries.
+ ;; We don't want boundary between deletion and insertion.
+ ;; So do it manually.
+ ;; Delete region silently for undo:
+ (if remove-undo-boundary
+ (progn
+ (let (buffer-undo-list)
+ (save-excursion
+ (delete-region ac-point (point))))
+ (setq buffer-undo-list
+ (nthcdr 2 buffer-undo-list)))
+ (delete-region ac-point (point)))
+ (insert string)
+ ;; Sometimes, possible when omni-completion used, (insert) added
+ ;; to buffer-undo-list strange record about position changes.
+ ;; Delete it here:
+ (when (and remove-undo-boundary
+ (integerp (cadr buffer-undo-list)))
+ (setcdr buffer-undo-list (nthcdr 2 buffer-undo-list)))
+ (undo-boundary)
+ (setq ac-selected-candidate string)
+ (setq ac-prefix string)))
+
+(defun ac-set-trigger-key (key)
+ "Set `ac-trigger-key' to `KEY'. It is recommemded to use this function instead of calling `setq'."
+ ;; Remove old mapping
+ (when ac-trigger-key
+ (define-key ac-mode-map (read-kbd-macro ac-trigger-key) nil))
+
+ ;; Make new mapping
+ (setq ac-trigger-key key)
+ (when key
+ (define-key ac-mode-map (read-kbd-macro key) 'ac-trigger-key-command)))
+
+(defun ac-set-timer ()
+ (unless ac-timer
+ (setq ac-timer (run-with-idle-timer ac-delay ac-delay 'ac-update-greedy))))
+
+(defun ac-cancel-timer ()
+ (when (timerp ac-timer)
+ (cancel-timer ac-timer)
+ (setq ac-timer nil)))
+
+(defun ac-update (&optional force)
+ (when (and auto-complete-mode
+ ac-prefix
+ (or ac-triggered
+ force)
+ (not isearch-mode))
+ (ac-put-prefix-overlay)
+ (setq ac-candidates (ac-candidates))
+ (let ((preferred-width (popup-preferred-width ac-candidates)))
+ ;; Reposition if needed
+ (when (or (null ac-menu)
+ (>= (popup-width ac-menu) preferred-width)
+ (<= (popup-width ac-menu) (- preferred-width 10))
+ (and (> (popup-direction ac-menu) 0)
+ (ac-menu-at-wrapper-line-p)))
+ (ac-inline-hide) ; Hide overlay to calculate correct column
+ (ac-menu-delete)
+ (ac-menu-create ac-point preferred-width ac-menu-height)))
+ (ac-update-candidates 0 0)
+ t))
+
+(defun ac-update-greedy (&optional force)
+ (let (result)
+ (while (when (and (setq result (ac-update force))
+ (null ac-candidates))
+ (add-to-list 'ac-ignoring-prefix-def ac-current-prefix-def)
+ (ac-start :force-init t)
+ ac-current-prefix-def))
+ result))
+
+(defun ac-set-show-menu-timer ()
+ (when (and (or (integerp ac-auto-show-menu) (floatp ac-auto-show-menu))
+ (null ac-show-menu-timer))
+ (setq ac-show-menu-timer (run-with-idle-timer ac-auto-show-menu ac-auto-show-menu 'ac-show-menu))))
+
+(defun ac-cancel-show-menu-timer ()
+ (when (timerp ac-show-menu-timer)
+ (cancel-timer ac-show-menu-timer)
+ (setq ac-show-menu-timer nil)))
+
+(defun ac-show-menu ()
+ (when (not (eq ac-show-menu t))
+ (setq ac-show-menu t)
+ (ac-inline-hide)
+ (ac-remove-quick-help)
+ (ac-update t)))
+
+(defun ac-help (&optional persist)
+ (interactive "P")
+ (when ac-menu
+ (popup-menu-show-help ac-menu persist)))
+
+(defun ac-persist-help ()
+ (interactive)
+ (ac-help t))
+
+(defun ac-last-help (&optional persist)
+ (interactive "P")
+ (when ac-last-completion
+ (popup-item-show-help (cdr ac-last-completion) persist)))
+
+(defun ac-last-persist-help ()
+ (interactive)
+ (ac-last-help t))
+
+(defun ac-set-quick-help-timer ()
+ (when (and ac-use-quick-help
+ (null ac-quick-help-timer))
+ (setq ac-quick-help-timer (run-with-idle-timer ac-quick-help-delay ac-quick-help-delay 'ac-quick-help))))
+
+(defun ac-cancel-quick-help-timer ()
+ (when (timerp ac-quick-help-timer)
+ (cancel-timer ac-quick-help-timer)
+ (setq ac-quick-help-timer nil)))
+
+(defun ac-pos-tip-show-quick-help (menu &optional item &rest args)
+ (let* ((point (plist-get args :point))
+ (around nil)
+ (parent-offset (popup-offset menu))
+ (doc (popup-menu-documentation menu item)))
+ (when (stringp doc)
+ (if (popup-hidden-p menu)
+ (setq around t)
+ (setq point nil))
+ (with-no-warnings
+ (pos-tip-show doc
+ 'popup-tip-face
+ (or point
+ (and menu
+ (popup-child-point menu parent-offset))
+ (point))
+ nil 0
+ popup-tip-max-width
+ nil nil
+ (and (not around) 0))
+ (unless (plist-get args :nowait)
+ (clear-this-command-keys)
+ (unwind-protect
+ (push (read-event (plist-get args :prompt)) unread-command-events)
+ (pos-tip-hide))
+ t)))))
+
+(defun ac-quick-help (&optional force)
+ (interactive)
+ (when (and (or force (null this-command))
+ (ac-menu-live-p)
+ (null ac-quick-help))
+ (setq ac-quick-help
+ (funcall (if (and ac-quick-help-prefer-x
+ (eq window-system 'x)
+ (featurep 'pos-tip))
+ 'ac-pos-tip-show-quick-help
+ 'popup-menu-show-quick-help)
+ ac-menu nil
+ :point ac-point
+ :height ac-quick-help-height
+ :nowait t))))
+
+(defun ac-remove-quick-help ()
+ (when ac-quick-help
+ (popup-delete ac-quick-help)
+ (setq ac-quick-help nil)))
+
+(defun ac-last-quick-help ()
+ (interactive)
+ (when (and ac-last-completion
+ (eq (marker-buffer (car ac-last-completion))
+ (current-buffer)))
+ (let ((doc (popup-item-documentation (cdr ac-last-completion)))
+ (point (marker-position (car ac-last-completion))))
+ (when (stringp doc)
+ (if (and ac-quick-help-prefer-x
+ (eq window-system 'x)
+ (featurep 'pos-tip))
+ (with-no-warnings (pos-tip-show doc nil point nil 0))
+ (popup-tip doc
+ :point point
+ :around t
+ :scroll-bar t
+ :margin t))))))
+
+(defmacro ac-define-quick-help-command (name arglist &rest body)
+ (declare (indent 2))
+ `(progn
+ (defun ,name ,arglist ,@body)
+ (put ',name 'ac-quick-help-command t)))
+
+(ac-define-quick-help-command ac-quick-help-scroll-down ()
+ (interactive)
+ (when ac-quick-help
+ (popup-scroll-down ac-quick-help)))
+
+(ac-define-quick-help-command ac-quick-help-scroll-up ()
+ (interactive)
+ (when ac-quick-help
+ (popup-scroll-up ac-quick-help)))
+
+
+
+;;;; Auto completion isearch
+
+(defun ac-isearch-callback (list)
+ (setq ac-dwim-enable (eq (length list) 1)))
+
+(defun ac-isearch ()
+ (interactive)
+ (when (ac-menu-live-p)
+ (ac-cancel-show-menu-timer)
+ (ac-cancel-quick-help-timer)
+ (ac-show-menu)
+ (popup-isearch ac-menu :callback 'ac-isearch-callback)))
+
+
+
+;;;; Auto completion commands
+
+(defun auto-complete (&optional sources)
+ "Start auto-completion at current point."
+ (interactive)
+ (let ((menu-live (ac-menu-live-p))
+ (inline-live (ac-inline-live-p)))
+ (ac-abort)
+ (let ((ac-sources (or sources ac-sources)))
+ (if (or ac-show-menu-immediately-on-auto-complete
+ inline-live)
+ (setq ac-show-menu t))
+ (ac-start))
+ (when (ac-update-greedy t)
+ ;; TODO Not to cause inline completion to be disrupted.
+ (if (ac-inline-live-p)
+ (ac-inline-hide))
+ ;; Not to expand when it is first time to complete
+ (when (and (or (and (not ac-expand-on-auto-complete)
+ (> (length ac-candidates) 1)
+ (not menu-live))
+ (not (let ((ac-common-part ac-whole-common-part))
+ (ac-expand-common))))
+ ac-use-fuzzy
+ (null ac-candidates))
+ (ac-fuzzy-complete)))))
+
+(defun ac-fuzzy-complete ()
+ "Start fuzzy completion at current point."
+ (interactive)
+ (when (require 'fuzzy nil)
+ (unless (ac-menu-live-p)
+ (ac-start))
+ (let ((ac-match-function 'fuzzy-all-completions))
+ (unless ac-cursor-color
+ (setq ac-cursor-color (frame-parameter (selected-frame) 'cursor-color)))
+ (if ac-fuzzy-cursor-color
+ (set-cursor-color ac-fuzzy-cursor-color))
+ (setq ac-show-menu t)
+ (setq ac-fuzzy-enable t)
+ (setq ac-triggered nil)
+ (ac-update t)))
+ t)
+
+(defun ac-next ()
+ "Select next candidate."
+ (interactive)
+ (when (ac-menu-live-p)
+ (popup-next ac-menu)
+ (setq ac-show-menu t)
+ (if (eq this-command 'ac-next)
+ (setq ac-dwim-enable t))))
+
+(defun ac-previous ()
+ "Select previous candidate."
+ (interactive)
+ (when (ac-menu-live-p)
+ (popup-previous ac-menu)
+ (setq ac-show-menu t)
+ (if (eq this-command 'ac-previous)
+ (setq ac-dwim-enable t))))
+
+(defun ac-expand ()
+ "Try expand, and if expanded twice, select next candidate."
+ (interactive)
+ (unless (ac-expand-common)
+ (let ((string (ac-selected-candidate)))
+ (when string
+ (when (equal ac-prefix string)
+ (ac-next)
+ (setq string (ac-selected-candidate)))
+ (ac-expand-string string (eq last-command this-command))
+ ;; Do reposition if menu at long line
+ (if (and (> (popup-direction ac-menu) 0)
+ (ac-menu-at-wrapper-line-p))
+ (ac-reposition))
+ (setq ac-show-menu t)
+ string))))
+
+(defun ac-expand-common ()
+ "Try to expand meaningful common part."
+ (interactive)
+ (if (and ac-dwim ac-dwim-enable)
+ (ac-complete)
+ (when (and (ac-inline-live-p)
+ ac-common-part)
+ (ac-inline-hide)
+ (ac-expand-string ac-common-part (eq last-command this-command))
+ (setq ac-common-part nil)
+ t)))
+
+(defun ac-complete ()
+ "Try complete."
+ (interactive)
+ (let* ((candidate (ac-selected-candidate))
+ (action (popup-item-property candidate 'action))
+ (fallback nil))
+ (when candidate
+ (unless (ac-expand-string candidate)
+ (setq fallback t))
+ ;; Remember to show help later
+ (when (and ac-point candidate)
+ (unless ac-last-completion
+ (setq ac-last-completion (cons (make-marker) nil)))
+ (set-marker (car ac-last-completion) ac-point ac-buffer)
+ (setcdr ac-last-completion candidate)))
+ (ac-abort)
+ (cond
+ (action
+ (funcall action))
+ (fallback
+ (ac-fallback-command)))
+ candidate))
+
+(defun* ac-start (&key
+ requires
+ force-init)
+ "Start completion."
+ (interactive)
+ (if (not auto-complete-mode)
+ (message "auto-complete-mode is not enabled")
+ (let* ((info (ac-prefix requires ac-ignoring-prefix-def))
+ (prefix-def (nth 0 info))
+ (point (nth 1 info))
+ (sources (nth 2 info))
+ prefix
+ (init (or force-init (not (eq ac-point point)))))
+ (if (or (null point)
+ (member (setq prefix (buffer-substring-no-properties point (point)))
+ ac-ignores))
+ (prog1 nil
+ (ac-abort))
+ (unless ac-cursor-color
+ (setq ac-cursor-color (frame-parameter (selected-frame) 'cursor-color)))
+ (setq ac-show-menu (or ac-show-menu (if (eq ac-auto-show-menu t) t))
+ ac-current-sources sources
+ ac-buffer (current-buffer)
+ ac-point point
+ ac-prefix prefix
+ ac-limit ac-candidate-limit
+ ac-triggered t
+ ac-current-prefix-def prefix-def)
+ (when (or init (null ac-prefix-overlay))
+ (ac-init))
+ (ac-set-timer)
+ (ac-set-show-menu-timer)
+ (ac-set-quick-help-timer)
+ (ac-put-prefix-overlay)))))
+
+(defun ac-stop ()
+ "Stop completiong."
+ (interactive)
+ (setq ac-selected-candidate nil)
+ (ac-abort))
+
+(defun ac-trigger-key-command (&optional force)
+ (interactive "P")
+ (if (or force (ac-trigger-command-p last-command))
+ (auto-complete)
+ (ac-fallback-command 'ac-trigger-key-command)))
+
+
+
+;;;; Basic cache facility
+
+(defvar ac-clear-variables-every-minute-timer nil)
+(defvar ac-clear-variables-after-save nil)
+(defvar ac-clear-variables-every-minute nil)
+(defvar ac-minutes-counter 0)
+
+(defun ac-clear-variable-after-save (variable &optional pred)
+ (add-to-list 'ac-clear-variables-after-save (cons variable pred)))
+
+(defun ac-clear-variables-after-save ()
+ (dolist (pair ac-clear-variables-after-save)
+ (if (or (null (cdr pair))
+ (funcall (cdr pair)))
+ (set (car pair) nil))))
+
+(defun ac-clear-variable-every-minutes (variable minutes)
+ (add-to-list 'ac-clear-variables-every-minute (cons variable minutes)))
+
+(defun ac-clear-variable-every-minute (variable)
+ (ac-clear-variable-every-minutes variable 1))
+
+(defun ac-clear-variable-every-10-minutes (variable)
+ (ac-clear-variable-every-minutes variable 10))
+
+(defun ac-clear-variables-every-minute ()
+ (incf ac-minutes-counter)
+ (dolist (pair ac-clear-variables-every-minute)
+ (if (eq (% ac-minutes-counter (cdr pair)) 0)
+ (set (car pair) nil))))
+
+
+
+;;;; Auto complete mode
+
+(defun ac-cursor-on-diable-face-p (&optional point)
+ (memq (get-text-property (or point (point)) 'face) ac-disable-faces))
+
+(defun ac-trigger-command-p (command)
+ "Return non-nil if `COMMAND' is a trigger command."
+ (and (symbolp command)
+ (or (memq command ac-trigger-commands)
+ (string-match "self-insert-command" (symbol-name command))
+ (string-match "electric" (symbol-name command)))))
+
+(defun ac-fallback-command (&optional except-command)
+ (let* ((auto-complete-mode nil)
+ (keys (this-command-keys-vector))
+ (command (if keys (key-binding keys))))
+ (when (and (commandp command)
+ (not (eq command except-command)))
+ (setq this-command command)
+ (call-interactively command))))
+
+(defun ac-compatible-package-command-p (command)
+ "Return non-nil if `COMMAND' is compatible with auto-complete."
+ (and (symbolp command)
+ (string-match ac-compatible-packages-regexp (symbol-name command))))
+
+(defun ac-handle-pre-command ()
+ (condition-case var
+ (if (or (setq ac-triggered (and (not ac-fuzzy-enable) ; ignore key storkes in fuzzy mode
+ (or (eq this-command 'auto-complete) ; special case
+ (ac-trigger-command-p this-command)
+ (and ac-completing
+ (memq this-command ac-trigger-commands-on-completing)))
+ (not (ac-cursor-on-diable-face-p))))
+ (ac-compatible-package-command-p this-command))
+ (progn
+ (if (or (not (symbolp this-command))
+ (not (get this-command 'ac-quick-help-command)))
+ (ac-remove-quick-help))
+ ;; Not to cause inline completion to be disrupted.
+ (ac-inline-hide))
+ (ac-abort))
+ (error (ac-error var))))
+
+(defun ac-handle-post-command ()
+ (condition-case var
+ (when (and ac-triggered
+ (or ac-auto-start
+ ac-completing)
+ (not isearch-mode))
+ (setq ac-last-point (point))
+ (ac-start :requires (unless ac-completing ac-auto-start))
+ (ac-inline-update))
+ (error (ac-error var))))
+
+(defun ac-setup ()
+ (if ac-trigger-key
+ (ac-set-trigger-key ac-trigger-key))
+ (if ac-use-comphist
+ (ac-comphist-init))
+ (unless ac-clear-variables-every-minute-timer
+ (setq ac-clear-variables-every-minute-timer (run-with-timer 60 60 'ac-clear-variables-every-minute)))
+ (if ac-stop-flymake-on-completing
+ (defadvice flymake-on-timer-event (around ac-flymake-stop-advice activate)
+ (unless ac-completing
+ ad-do-it))
+ (ad-disable-advice 'flymake-on-timer-event 'around 'ac-flymake-stop-advice)))
+
+(define-minor-mode auto-complete-mode
+ "AutoComplete mode"
+ :lighter " AC"
+ :keymap ac-mode-map
+ :group 'auto-complete
+ (if auto-complete-mode
+ (progn
+ (ac-setup)
+ (add-hook 'pre-command-hook 'ac-handle-pre-command nil t)
+ (add-hook 'post-command-hook 'ac-handle-post-command nil t)
+ (add-hook 'after-save-hook 'ac-clear-variables-after-save nil t)
+ (run-hooks 'auto-complete-mode-hook))
+ (remove-hook 'pre-command-hook 'ac-handle-pre-command t)
+ (remove-hook 'post-command-hook 'ac-handle-post-command t)
+ (remove-hook 'after-save-hook 'ac-clear-variables-after-save t)
+ (ac-abort)))
+
+(defun auto-complete-mode-maybe ()
+ "What buffer `auto-complete-mode' prefers."
+ (if (and (not (minibufferp (current-buffer)))
+ (memq major-mode ac-modes))
+ (auto-complete-mode 1)))
+
+(define-global-minor-mode global-auto-complete-mode
+ auto-complete-mode auto-complete-mode-maybe
+ :group 'auto-complete)
+
+
+
+;;;; Compatibilities with other extensions
+
+(defun ac-flyspell-workaround ()
+ "Flyspell uses `sit-for' for delaying its process. Unfortunatelly,
+it stops auto completion which is trigger with `run-with-idle-timer'.
+This workaround avoid flyspell processes when auto completion is being started."
+ (interactive)
+ (defadvice flyspell-post-command-hook (around ac-flyspell-workaround activate)
+ (unless ac-triggered
+ ad-do-it)))
+
+
+
+;;;; Standard sources
+
+(defmacro ac-define-source (name source)
+ "Source definition macro. It defines a complete command also."
+ (declare (indent 1))
+ `(progn
+ (defvar ,(intern (format "ac-source-%s" name))
+ ,source)
+ (defun ,(intern (format "ac-complete-%s" name)) ()
+ (interactive)
+ (auto-complete '(,(intern (format "ac-source-%s" name)))))))
+
+;; Words in buffer source
+(defvar ac-word-index nil)
+
+(defun ac-candidate-words-in-buffer (point prefix limit)
+ (let ((i 0)
+ candidate
+ candidates
+ (regexp (concat "\\_<" (regexp-quote prefix) "\\(\\sw\\|\\s_\\)+\\_>")))
+ (save-excursion
+ ;; Search backward
+ (goto-char point)
+ (while (and (or (not (integerp limit)) (< i limit))
+ (re-search-backward regexp nil t))
+ (setq candidate (match-string-no-properties 0))
+ (unless (member candidate candidates)
+ (push candidate candidates)
+ (incf i)))
+ ;; Search backward
+ (goto-char (+ point (length prefix)))
+ (while (and (or (not (integerp limit)) (< i limit))
+ (re-search-forward regexp nil t))
+ (setq candidate (match-string-no-properties 0))
+ (unless (member candidate candidates)
+ (push candidate candidates)
+ (incf i)))
+ (nreverse candidates))))
+
+(defun ac-incremental-update-word-index ()
+ (unless (local-variable-p 'ac-word-index)
+ (make-local-variable 'ac-word-index))
+ (if (null ac-word-index)
+ (setq ac-word-index (cons nil nil)))
+ ;; Mark incomplete
+ (if (car ac-word-index)
+ (setcar ac-word-index nil))
+ (let ((index (cdr ac-word-index))
+ (words (ac-candidate-words-in-buffer ac-point ac-prefix (or (and (integerp ac-limit) ac-limit) 10))))
+ (dolist (word words)
+ (unless (member word index)
+ (push word index)
+ (setcdr ac-word-index index)))))
+
+(defun ac-update-word-index-1 ()
+ (unless (local-variable-p 'ac-word-index)
+ (make-local-variable 'ac-word-index))
+ (when (and (not (car ac-word-index))
+ (< (buffer-size) 1048576))
+ ;; Complete index
+ (setq ac-word-index
+ (cons t
+ (split-string (buffer-substring-no-properties (point-min) (point-max))
+ "\\(?:^\\|\\_>\\).*?\\(?:\\_<\\|$\\)")))))
+
+(defun ac-update-word-index ()
+ (dolist (buffer (buffer-list))
+ (when (or ac-fuzzy-enable
+ (not (eq buffer (current-buffer))))
+ (with-current-buffer buffer
+ (ac-update-word-index-1)))))
+
+(defun ac-word-candidates (&optional buffer-pred)
+ (loop initially (unless ac-fuzzy-enable (ac-incremental-update-word-index))
+ for buffer in (buffer-list)
+ if (and (or (not (integerp ac-limit)) (< (length candidates) ac-limit))
+ (if buffer-pred (funcall buffer-pred buffer) t))
+ append (funcall ac-match-function
+ ac-prefix
+ (and (local-variable-p 'ac-word-index buffer)
+ (cdr (buffer-local-value 'ac-word-index buffer))))
+ into candidates
+ finally return candidates))
+
+(ac-define-source words-in-buffer
+ '((candidates . ac-word-candidates)))
+
+(ac-define-source words-in-all-buffer
+ '((init . ac-update-word-index)
+ (candidates . ac-word-candidates)))
+
+(ac-define-source words-in-same-mode-buffers
+ '((init . ac-update-word-index)
+ (candidates . (ac-word-candidates
+ (lambda (buffer)
+ (derived-mode-p (buffer-local-value 'major-mode buffer)))))))
+
+;; Lisp symbols source
+(defvar ac-symbols-cache nil)
+(ac-clear-variable-every-10-minutes 'ac-symbols-cache)
+
+(defun ac-symbol-file (symbol type)
+ (if (fboundp 'find-lisp-object-file-name)
+ (find-lisp-object-file-name symbol type)
+ (let ((file-name (with-no-warnings
+ (describe-simplify-lib-file-name
+ (symbol-file symbol type)))))
+ (when (equal file-name "loaddefs.el")
+ ;; Find the real def site of the preloaded object.
+ (let ((location (condition-case nil
+ (if (eq type 'defun)
+ (find-function-search-for-symbol symbol nil
+ "loaddefs.el")
+ (find-variable-noselect symbol file-name))
+ (error nil))))
+ (when location
+ (with-current-buffer (car location)
+ (when (cdr location)
+ (goto-char (cdr location)))
+ (when (re-search-backward
+ "^;;; Generated autoloads from \\(.*\\)" nil t)
+ (setq file-name (match-string 1)))))))
+ (if (and (null file-name)
+ (or (eq type 'defun)
+ (integerp (get symbol 'variable-documentation))))
+ ;; It's a object not defined in Elisp but in C.
+ (if (get-buffer " *DOC*")
+ (if (eq type 'defun)
+ (help-C-file-name (symbol-function symbol) 'subr)
+ (help-C-file-name symbol 'var))
+ 'C-source)
+ file-name))))
+
+(defun ac-symbol-documentation (symbol)
+ (if (stringp symbol)
+ (setq symbol (intern-soft symbol)))
+ (ignore-errors
+ (with-temp-buffer
+ (let ((standard-output (current-buffer)))
+ (prin1 symbol)
+ (princ " is ")
+ (cond
+ ((fboundp symbol)
+ (let ((help-xref-following t))
+ (describe-function-1 symbol))
+ (buffer-string))
+ ((boundp symbol)
+ (let ((file-name (ac-symbol-file symbol 'defvar)))
+ (princ "a variable")
+ (when file-name
+ (princ " defined in `")
+ (princ (if (eq file-name 'C-source)
+ "C source code"
+ (file-name-nondirectory file-name))))
+ (princ "'.\n\n")
+ (princ (or (documentation-property symbol 'variable-documentation t)
+ "Not documented."))
+ (buffer-string)))
+ ((facep symbol)
+ (let ((file-name (ac-symbol-file symbol 'defface)))
+ (princ "a face")
+ (when file-name
+ (princ " defined in `")
+ (princ (if (eq file-name 'C-source)
+ "C source code"
+ (file-name-nondirectory file-name))))
+ (princ "'.\n\n")
+ (princ (or (documentation-property symbol 'face-documentation t)
+ "Not documented."))
+ (buffer-string)))
+ (t
+ (let ((doc (documentation-property symbol 'group-documentation t)))
+ (when doc
+ (princ "a group.\n\n")
+ (princ doc)
+ (buffer-string)))))))))
+
+(defun ac-symbol-candidates ()
+ (or ac-symbols-cache
+ (setq ac-symbols-cache
+ (loop for x being the symbols
+ if (or (fboundp x)
+ (boundp x)
+ (symbol-plist x))
+ collect (symbol-name x)))))
+
+(ac-define-source symbols
+ '((candidates . ac-symbol-candidates)
+ (document . ac-symbol-documentation)
+ (symbol . "s")
+ (cache)))
+
+;; Lisp functions source
+(defvar ac-functions-cache nil)
+(ac-clear-variable-every-10-minutes 'ac-functions-cache)
+
+(defun ac-function-candidates ()
+ (or ac-functions-cache
+ (setq ac-functions-cache
+ (loop for x being the symbols
+ if (fboundp x)
+ collect (symbol-name x)))))
+
+(ac-define-source functions
+ '((candidates . ac-function-candidates)
+ (document . ac-symbol-documentation)
+ (symbol . "f")
+ (prefix . "(\\(\\(?:\\sw\\|\\s_\\)+\\)")
+ (cache)))
+
+;; Lisp variables source
+(defvar ac-variables-cache nil)
+(ac-clear-variable-every-10-minutes 'ac-variables-cache)
+
+(defun ac-variable-candidates ()
+ (or ac-variables-cache
+ (setq ac-variables-cache
+ (loop for x being the symbols
+ if (boundp x)
+ collect (symbol-name x)))))
+
+(ac-define-source variables
+ '((candidates . ac-variable-candidates)
+ (document . ac-symbol-documentation)
+ (symbol . "v")
+ (cache)))
+
+;; Lisp features source
+(defvar ac-emacs-lisp-features nil)
+(ac-clear-variable-every-10-minutes 'ac-emacs-lisp-features)
+
+(defun ac-emacs-lisp-feature-candidates ()
+ (or ac-emacs-lisp-features
+ (if (fboundp 'find-library-suffixes)
+ (let ((suffix (concat (regexp-opt (find-library-suffixes) t) "\\'")))
+ (setq ac-emacs-lisp-features
+ (append (mapcar 'prin1-to-string features)
+ (loop for dir in load-path
+ if (file-directory-p dir)
+ append (loop for file in (directory-files dir)
+ if (string-match suffix file)
+ collect (substring file 0 (match-beginning 0))))))))))
+
+(ac-define-source features
+ '((depends find-func)
+ (candidates . ac-emacs-lisp-feature-candidates)
+ (prefix . "require +'\\(\\(?:\\sw\\|\\s_\\)*\\)")
+ (requires . 0)))
+
+(defvaralias 'ac-source-emacs-lisp-features 'ac-source-features)
+
+;; Abbrev source
+(ac-define-source abbrev
+ '((candidates . (mapcar 'popup-x-to-string (append (vconcat local-abbrev-table global-abbrev-table) nil)))
+ (action . expand-abbrev)
+ (symbol . "a")
+ (cache)))
+
+;; Files in current directory source
+(ac-define-source files-in-current-dir
+ '((candidates . (directory-files default-directory))
+ (cache)))
+
+;; Filename source
+(defvar ac-filename-cache nil)
+
+(defun ac-filename-candidate ()
+ (unless (file-regular-p ac-prefix)
+ (ignore-errors
+ (loop with dir = (file-name-directory ac-prefix)
+ with files = (or (assoc-default dir ac-filename-cache)
+ (let ((files (directory-files dir nil "^[^.]")))
+ (push (cons dir files) ac-filename-cache)
+ files))
+ for file in files
+ for path = (concat dir file)
+ collect (if (file-directory-p path)
+ (concat path "/")
+ path)))))
+
+(ac-define-source filename
+ '((init . (setq ac-filename-cache nil))
+ (candidates . ac-filename-candidate)
+ (prefix . valid-file)
+ (requires . 0)
+ (action . ac-start)
+ (limit . nil)))
+
+;; Dictionary source
+(defcustom ac-user-dictionary nil
+ "User dictionary"
+ :type '(repeat string)
+ :group 'auto-complete)
+
+(defcustom ac-user-dictionary-files '("~/.dict")
+ "User dictionary files."
+ :type '(repeat string)
+ :group 'auto-complete)
+
+(defcustom ac-dictionary-directories nil
+ "Dictionary directories."
+ :type '(repeat string)
+ :group 'auto-complete)
+
+(defvar ac-dictionary nil)
+(defvar ac-dictionary-cache (make-hash-table :test 'equal))
+
+(defun ac-clear-dictionary-cache ()
+ (interactive)
+ (clrhash ac-dictionary-cache))
+
+(defun ac-read-file-dictionary (filename)
+ (let ((cache (gethash filename ac-dictionary-cache 'none)))
+ (if (and cache (not (eq cache 'none)))
+ cache
+ (let (result)
+ (ignore-errors
+ (with-temp-buffer
+ (insert-file-contents filename)
+ (setq result (split-string (buffer-string) "\n"))))
+ (puthash filename result ac-dictionary-cache)
+ result))))
+
+(defun ac-buffer-dictionary ()
+ (apply 'append
+ (mapcar 'ac-read-file-dictionary
+ (mapcar (lambda (name)
+ (loop for dir in ac-dictionary-directories
+ for file = (concat dir "/" name)
+ if (file-exists-p file)
+ return file))
+ (list (symbol-name major-mode)
+ (ignore-errors
+ (file-name-extension (buffer-file-name))))))))
+
+(defun ac-dictionary-candidates ()
+ (apply 'append `(,ac-user-dictionary
+ ,(ac-buffer-dictionary)
+ ,@(mapcar 'ac-read-file-dictionary
+ ac-user-dictionary-files))))
+
+(ac-define-source dictionary
+ '((candidates . ac-dictionary-candidates)
+ (symbol . "d")))
+
+(provide 'auto-complete)
+;;; auto-complete.el ends here
generated by cgit v1.2.3-54-g00ecf (git 2.39.0) at 2024-06-29 10:44:03 +0000