(eval-when-compile (require 'cl))
+(add-to-list 'debug-ignored-errors
+ "^Pseudo tooltip frontend cannot be used twice$")
+(add-to-list 'debug-ignored-errors "^Preview frontend cannot be used twice$")
+
(defgroup company nil
""
:group 'abbrev
"*"
:group 'company)
+(defun company-frontends-set (variable value)
+ ;; uniquify
+ (let ((remainder value))
+ (setcdr remainder (delq (car remainder) (cdr remainder))))
+ (and (memq 'company-pseudo-tooltip-unless-just-one-frontend value)
+ (memq 'company-pseudo-tooltip-frontend value)
+ (error "Pseudo tooltip frontend cannot be used twice"))
+ (and (memq 'company-preview-if-just-one-frontend value)
+ (memq 'company-preview-frontend value)
+ (error "Preview frontend cannot be used twice"))
+ ;; preview must come last
+ (dolist (f '(company-preview-if-just-one-frontend company-preview-frontend))
+ (when (memq f value)
+ (setq value (append (delq f value) (list f)))))
+ (set variable value))
+
(defcustom company-frontends '(company-echo-frontend
- company-pseudo-tooltip-frontend
- company-completion-frontend)
+ company-pseudo-tooltip-unless-just-one-frontend
+ company-preview-if-just-one-frontend)
"*"
+ :set 'company-frontends-set
:group 'company
- :type '(repeat (function :tag "function" nil)))
-
-(defcustom company-backends '(company-elisp-completion)
+ :type '(repeat (choice (const :tag "echo" company-echo-frontend)
+ (const :tag "pseudo tooltip"
+ company-pseudo-tooltip-frontend)
+ (const :tag "pseudo tooltip, multiple only"
+ company-pseudo-tooltip-unless-just-one-frontend)
+ (const :tag "preview" company-preview-frontend)
+ (const :tag "preview, unique only"
+ company-preview-if-just-one-frontend)
+ (function :tag "custom function" nil))))
+
+(defcustom company-backends '(company-elisp company-nxml)
"*"
:group 'company
:type '(repeat (function :tag "function" nil)))
(let ((pos (syntax-ppss)))
(or (nth 3 pos) (nth 4 pos) (nth 7 pos))))
-;;; elisp
-
-(defvar company-lisp-symbol-regexp
- "\\_<\\(\\sw\\|\\s_\\)+\\_>\\=")
-
-(defun company-grab-lisp-symbol ()
- (let ((prefix (or (company-grab company-lisp-symbol-regexp) "")))
- (unless (and (company-in-string-or-comment (- (point) (length prefix)))
- (/= (char-before (- (point) (length prefix))) ?`))
- prefix)))
-
-(defun company-elisp-completion (command &optional arg &rest ignored)
- (case command
- ('prefix (and (eq major-mode 'emacs-lisp-mode)
- (company-grab-lisp-symbol)))
- ('candidates (let ((completion-ignore-case nil))
- (all-completions arg obarray
- (lambda (symbol) (or (boundp symbol)
- (fboundp symbol))))))))
-
;;; completion mechanism ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
(defvar company-backend nil)
(defvar company-point nil)
(make-variable-buffer-local 'company-point)
+(defvar company-disabled-backends nil)
+
(defsubst company-strip-prefix (str)
(substring str (length company-prefix)))
(let ((completion-ignore-case nil) ;; TODO: make this optional
prefix)
(dolist (backend company-backends)
- (when (setq prefix (funcall backend 'prefix))
- (when (company-should-complete prefix)
- (setq company-backend backend
- company-prefix prefix
- company-candidates
- (funcall company-backend 'candidates prefix)
- company-common (try-completion prefix company-candidates)
- company-selection 0
- company-point (point))
- (company-call-frontends 'update))
- (return prefix)))
+ (unless (fboundp backend)
+ (ignore-errors (require backend nil t)))
+ (if (fboundp backend)
+ (when (setq prefix (funcall backend 'prefix))
+ (when (company-should-complete prefix)
+ (setq company-backend backend
+ company-prefix prefix
+ company-candidates
+ (funcall company-backend 'candidates prefix)
+ company-common
+ (try-completion prefix company-candidates)
+ company-selection 0
+ company-point (point))
+ (unless (funcall company-backend 'sorted)
+ (setq company-candidates
+ (sort company-candidates 'string<)))
+ (company-call-frontends 'update))
+ (return prefix))
+ (unless (memq backend company-disabled-backends)
+ (push backend company-disabled-backends)
+ (message "Company back-end '%s' could not be initialized"
+ backend))))
(unless (and company-candidates
(not (eq t company-common)))
(company-cancel)))))
new
(company-safe-substring old (+ offset (length new)))))
-(defun company-modified-substring (beg end lines column)
+(defun company-modified-substring (beg end lines column nl)
(let ((old (company-buffer-lines beg end))
new)
;; Inject into old lines.
;; Append whole new lines.
(while lines
(push (company-modify-line "" (pop lines) column) new))
- (concat (mapconcat 'identity (nreverse new) "\n")
+ (concat (when nl "\n")
+ (mapconcat 'identity (nreverse new) "\n")
"\n")))
;; show
(move-to-column 0)
- (move-to-window-line row)
- (let ((beg (point))
+
+ (let ((nl (< (move-to-window-line row) row))
+ (beg (point))
(end (save-excursion
(move-to-window-line (min (window-height)
(+ row company-tooltip-limit)))
(setq company-pseudo-tooltip-overlay (make-overlay beg end))
(overlay-put company-pseudo-tooltip-overlay 'before-string
- (company-modified-substring beg end lines column))
+ (company-modified-substring beg end lines column nl))
(overlay-put company-pseudo-tooltip-overlay 'invisible t)
(overlay-put company-pseudo-tooltip-overlay 'window (selected-window)))))
(- (point) (length company-prefix))))
('hide (company-pseudo-tooltip-hide))))
+(defun company-pseudo-tooltip-unless-just-one-frontend (command)
+ (unless (and (eq command 'post-command)
+ (not (cdr company-candidates)))
+ (company-pseudo-tooltip-frontend command)))
+
;;; overlay ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
(defvar company-preview-overlay nil)
('post-command (company-preview-show-at-point (point)))
('hide (company-preview-hide))))
+(defun company-preview-if-just-one-frontend (command)
+ (unless (and (eq command 'post-command)
+ (cdr company-candidates))
+ (company-preview-frontend command)))
+
;;; echo ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
(defvar company-echo-last-msg nil)