1 ;;; company-eclim.el --- A company-mode completion back-end for eclim.
3 ;; Copyright (C) 2009, 2011 Free Software Foundation, Inc.
5 ;; Author: Nikolaj Schumacher
7 ;; This file is part of GNU Emacs.
9 ;; GNU Emacs is free software: you can redistribute it and/or modify
10 ;; it under the terms of the GNU General Public License as published by
11 ;; the Free Software Foundation, either version 3 of the License, or
12 ;; (at your option) any later version.
14 ;; GNU Emacs is distributed in the hope that it will be useful,
15 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
16 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 ;; GNU General Public License for more details.
19 ;; You should have received a copy of the GNU General Public License
20 ;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
29 (eval-when-compile (require 'cl))
31 (defun company-eclim-executable-find ()
33 (dolist (eclipse-root '("/Applications/eclipse" "/usr/lib/eclipse"
34 "/usr/local/lib/eclipse"))
35 (and (file-exists-p (setq file (expand-file-name "plugins" eclipse-root)))
36 (setq file (car (last (directory-files file t "^org.eclim_"))))
37 (file-exists-p (setq file (expand-file-name "bin/eclim" file)))
40 (defcustom company-eclim-executable
41 (or (executable-find "eclim") (company-eclim-executable-find))
42 "*Location of eclim executable."
46 (defcustom company-eclim-auto-save t
47 "*Determines whether to save the buffer when retrieving completions.
48 eclim can only complete correctly when the buffer has been saved."
50 :type '(choice (const :tag "Off" nil)
53 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
55 (defvar company-eclim--project-dir 'unknown)
56 (make-variable-buffer-local 'company-eclim--project-dir)
58 (defvar company-eclim--project-name 'unknown)
59 (make-variable-buffer-local 'company-eclim--project-name)
61 (defvar company-eclim--doc nil)
62 (make-variable-buffer-local 'company-eclim--doc)
64 (defun company-eclim--buffer-lines ()
65 (goto-char (point-max))
67 (while (= 0 (forward-line -1))
68 (push (buffer-substring-no-properties (point-at-bol) (point-at-eol))
72 (defun company-eclim--call-process (&rest args)
73 (let ((coding-system-for-read 'utf-8)
76 (if (= 0 (setq res (apply 'call-process company-eclim-executable nil t nil
78 (company-eclim--buffer-lines)
79 (message "Company-eclim command failed with error %d:\n%s" res
80 (buffer-substring (point-min) (point-max)))
83 (defun company-eclim--project-list ()
84 (mapcar (lambda (line) (nreverse (split-string line " *- *" nil)))
85 (company-eclim--call-process "project_list")))
87 (defun company-eclim--project-dir ()
88 (if (eq company-eclim--project-dir 'unknown)
89 (setq company-eclim--project-dir
92 (company-locate-dominating-file buffer-file-name ".project"))))
93 company-eclim--project-dir))
95 (defun company-eclim--project-name ()
96 (if (eq company-eclim--project-name 'unknown)
97 (setq company-eclim--project-name
98 (car (cddr (assoc (company-eclim--project-dir)
99 (company-eclim--project-list)))))
100 company-eclim--project-name))
102 (defun company-eclim--candidates (prefix)
104 (let ((project-file (file-relative-name buffer-file-name
105 (company-eclim--project-dir)))
106 (project-name (company-eclim--project-name)))
107 (when company-eclim-auto-save
108 (when (buffer-modified-p)
110 ;; FIXME: Sometimes this isn't finished when we complete.
111 (company-eclim--call-process "java_src_update"
112 "-p" (company-eclim--project-name)
114 (setq company-eclim--doc
115 (mapcar (lambda (line)
116 (cdr (split-string line "|" nil)))
117 (company-eclim--call-process
118 "java_complete" "-p" (company-eclim--project-name)
120 "-o" (number-to-string (1- (point)))
123 (let ((completion-ignore-case nil))
124 (all-completions prefix (mapcar 'car company-eclim--doc))))
126 (defun company-eclim (command &optional arg &rest ignored)
127 "A `company-mode' completion back-end for eclim.
128 eclim provides access to Eclipse Java IDE features for other editors.
130 Completions only work correctly when the buffer has been saved.
131 `company-eclim-auto-save' determines whether to do this automatically."
132 (interactive (list 'interactive))
134 (interactive (company-begin-backend 'company-eclim))
135 (prefix (and (derived-mode-p 'java-mode 'jde-mode)
137 company-eclim-executable
138 (company-eclim--project-name)
139 (not (company-in-string-or-comment))
140 (or (company-grab-symbol) 'stop)))
141 (candidates (company-eclim--candidates arg))
142 (meta (cadr (assoc arg company-eclim--doc)))
143 ;; because "" doesn't return everything
144 (no-cache (equal arg ""))))
146 (provide 'company-eclim)
147 ;;; company-eclim.el ends here