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|
;;; go-autocomplete.el --- auto-complete-mode backend for go-mode
;; Copyright (C) 2010
;; Author: Mikhail <tensai@cirno.in> Kuryshev
;; Keywords: languages
;; Package-Requires: ((auto-complete "1.4.0"))
;; 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:
;; Ensure that go-autocomplete in your load-path and add to your ~/.emacs
;; following line:
;;
;; (require 'go-autocomplete)
;; Also you could setup any combination (for example M-TAB)
;; for invoking auto-complete:
;;
;; (require 'auto-complete-config)
;; (define-key ac-mode-map (kbd "M-TAB") 'auto-complete)
;;; Code:
(eval-when-compile
(require 'cl)
(require 'auto-complete))
;; Close gocode daemon at exit unless it was already running
(eval-after-load "go-mode"
'(progn
(let* ((user (or (getenv "USER") "all"))
(sock (format (concat temporary-file-directory "gocode-daemon.%s") user)))
(unless (file-exists-p sock)
(add-hook 'kill-emacs-hook #'(lambda ()
(ignore-errors
(call-process "gocode" nil nil nil "close"))))))))
;(defvar go-reserved-keywords
; '("break" "case" "chan" "const" "continue" "default" "defer" "else"
; "fallthrough" "for" "func" "go" "goto" "if" "import" "interface"
; "map" "package" "range" "return" "select" "struct" "switch" "type" "var")
; "Go reserved keywords.")
(defun ac-comphist-sort (db collection prefix &optional threshold)
;; redefine to disable sorting
(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))
(mapcar (lambda (string)
(let ((score (ac-comphist-score db string prefix)))
(incf total score)
(cons string score)))
collection)))
(if threshold
(cons n result)
result)))
(defun ac-go-invoke-autocomplete ()
(let ((temp-buffer (generate-new-buffer "*gocode*")))
(unwind-protect
(progn
(call-process-region (point-min)
(point-max)
"gocode"
nil
temp-buffer
nil
"-f=emacs"
"autocomplete"
(or (buffer-file-name) "")
(concat "c" (int-to-string (- (point) 1))))
(with-current-buffer temp-buffer (buffer-string)))
(kill-buffer temp-buffer))))
(defun ac-go-format-autocomplete (buffer-contents)
(sort
(split-string buffer-contents "\n" t)
(lambda (a b) (string< (downcase a)
(downcase b)))))
(defun ac-go-get-candidates (strings)
(let ((prop (lambda (entry)
(let ((name (nth 0 entry))
(summary (nth 1 entry)))
(propertize name
'summary summary))))
(split (lambda (strings)
(mapcar (lambda (str)
(split-string str ",," t))
strings))))
(mapcar prop (funcall split strings))))
(defun ac-go-action ()
(let ((item (cdr ac-last-completion)))
(if (stringp item)
(message "%s" (get-text-property 0 'summary item)))))
(defun ac-go-document (item)
(if (stringp item)
(let ((s (get-text-property 0 'summary item)))
(message "%s" s)
nil)))
(defun ac-go-candidates ()
(ac-go-get-candidates (ac-go-format-autocomplete (ac-go-invoke-autocomplete))))
(defun ac-go-prefix ()
(or (ac-prefix-symbol)
(let ((c (char-before)))
(when (eq ?\. c)
(point)))))
(ac-define-source go
'((candidates . ac-go-candidates)
(candidate-face . ac-candidate-face)
(selection-face . ac-selection-face)
(document . ac-go-document)
(action . ac-go-action)
(prefix . ac-go-prefix)
(requires . 0)
(cache)
(symbol . "g")))
(add-to-list 'ac-modes 'go-mode)
(add-hook 'go-mode-hook #'(lambda ()
(add-to-list 'ac-sources 'ac-source-go)))
(provide 'go-autocomplete)
;;; go-autocomplete.el ends here
|
