1 ;;; company-eclim.el --- a company-mode completion back-end for eclim.
3 ;; Copyright (C) 2009 Nikolaj Schumacher
5 ;; This file is part of company 0.4.1.
7 ;; This program is free software; you can redistribute it and/or
8 ;; modify it under the terms of the GNU General Public License
9 ;; as published by the Free Software Foundation; either version 2
10 ;; of the License, or (at your option) any later version.
12 ;; This program is distributed in the hope that it will be useful,
13 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
14 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 ;; GNU General Public License for more details.
17 ;; You should have received a copy of the GNU General Public License
18 ;; along with this program. If not, see <http://www.gnu.org/licenses/>.
21 (eval-when-compile (require 'cl))
23 (defun company-eclim-executable-find ()
25 (dolist (eclipse-root '("/Applications/eclipse" "/usr/lib/eclipse"
26 "/usr/local/lib/eclipse"))
27 (and (file-exists-p (setq file (expand-file-name "plugins" eclipse-root)))
28 (setq file (car (last (directory-files file t "^org.eclim_"))))
29 (file-exists-p (setq file (expand-file-name "bin/eclim" file)))
32 (defcustom company-eclim-executable
33 (or (executable-find "eclim") (company-eclim-executable-find))
34 "*Location of eclim executable"
38 (defcustom company-eclim-auto-save nil
39 "*Determines whether to save the buffer when retrieving completions.
40 eclim can only complete correctly when the buffer has been saved."
42 :type '(choice (const :tag "Off" nil)
45 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
47 (defvar company-eclim--project-dir 'unknown)
48 (make-variable-buffer-local 'company-eclim--project-dir)
50 (defvar company-eclim--project-name 'unknown)
51 (make-variable-buffer-local 'company-eclim--project-name)
53 (defvar company-eclim--doc nil)
54 (make-variable-buffer-local 'company-eclim--doc)
56 (defun company-eclim--buffer-lines ()
57 (goto-char (point-max))
59 (while (= 0 (forward-line -1))
60 (push (buffer-substring-no-properties (point-at-bol) (point-at-eol))
64 (defun company-eclim--call-process (&rest args)
65 (let ((coding-system-for-read 'utf-8))
67 (if (= 0 (apply 'call-process company-eclim-executable nil t nil
69 (company-eclim--buffer-lines)
70 (message "Company-eclim command failed")
73 (defun company-eclim--project-list ()
74 (mapcar (lambda (line) (nreverse (split-string line " *- *" nil)))
75 (company-eclim--call-process "project_list")))
77 (defun company-eclim--project-dir ()
78 (if (eq company-eclim--project-dir 'unknown)
79 (setq company-eclim--project-dir
81 (company-locate-dominating-file buffer-file-name ".project")))
82 company-eclim--project-dir))
84 (defun company-eclim--project-name ()
85 (if (eq company-eclim--project-name 'unknown)
86 (setq company-eclim--project-name
87 (car (cddr (assoc (company-eclim--project-dir)
88 (company-eclim--project-list)))))
89 company-eclim--project-name))
91 (defun company-eclim--candidates (prefix)
93 (let ((project-file (file-relative-name buffer-file-name
94 (company-eclim--project-dir)))
95 (project-name (company-eclim--project-name)))
96 (when company-eclim-auto-save
98 ;; FIXME: Sometimes this isn't finished when we complete.
99 (company-eclim--call-process "java_src_update"
100 "-p" (company-eclim--project-name)
102 (setq company-eclim--doc
103 (mapcar (lambda (line)
104 (cdr (split-string line "|" nil)))
105 (company-eclim--call-process
106 "java_complete" "-p" (company-eclim--project-name)
108 "-o" (number-to-string (1- (point)))
111 (let ((completion-ignore-case nil))
112 (all-completions prefix (mapcar 'car company-eclim--doc))))
114 (defun company-eclim (command &optional arg &rest ignored)
115 "A `company-mode' completion back-end for eclim.
116 eclim provides access to Eclipse Java IDE features for other editors.
118 Completions only work correctly when the buffer has been saved.
119 `company-eclim-auto-save' determines whether to do this automatically."
120 (interactive (list 'interactive))
122 ('interactive (company-begin-backend 'company-eclim))
123 ('prefix (and (derived-mode-p 'java-mode 'jde-mode)
125 company-eclim-executable
126 (company-eclim--project-name)
127 (not (company-in-string-or-comment))
128 (or (company-grab-symbol) 'stop)))
129 ('candidates (company-eclim--candidates arg))
130 ('meta (cadr (assoc arg company-eclim--doc)))
131 ;; because "" doesn't return everything
132 ('no-cache (equal arg ""))))
134 (provide 'company-eclim)
135 ;;; company-eclim.el ends here