Deal with empty prefixes in semantic.

[gnu-emacs-elpa] / company-semantic.el

diff --git a/company-semantic.el b/company-semantic.el
index 8fba9cf1429000763755c735010eee0141520560..ad1ab65a85c002fb2e029263bb45b7c51f5379fa 100644 (file)
--- a/company-semantic.el
+++ b/company-semantic.el
@@ -1,3 +1,22 @@
+;;; company-semantic.el --- a company-mode back-end using CEDET Semantic
+;;
+;; Copyright (C) 2009 Nikolaj Schumacher
+;;
+;; This file is part of company.
+;;
+;; 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 2
+;; 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/>.
+
 (require 'company)
 (require 'semantic-ia)
 (eval-when-compile (require 'cl))
@@ -27,6 +46,15 @@
                     "\n"))
             doc)))
 
+(defun company-semantic-doc-buffer (tag)
+  (let ((doc (semantic-documentation-for-tag tag)))
+    (when doc
+      (with-current-buffer (company-doc-buffer)
+        (insert (funcall semantic-idle-summary-function tag nil t)
+                "\n"
+                doc)
+        (current-buffer)))))
+
 (defsubst company-semantic-completions (prefix)
   (ignore-errors
     (let ((completion-ignore-case nil)
@@ -42,7 +70,10 @@
                      (mapcar 'semantic-tag-name
                              (semantic-analyze-find-tags-by-prefix arg))))
     ('meta (funcall company-semantic-metadata-function
-                    (semantic-analyze-find-tag arg)))))
+                    (semantic-analyze-find-tag arg)))
+    ('doc-buffer (company-semantic-doc-buffer (semantic-analyze-find-tag arg)))
+    ;; because "" is an empty context and doesn't return local variables
+    ('no-cache (equal arg ""))))
 
 (provide 'company-semantic)
 ;;; company-semantic.el ends here