-;;; company-semantic.el --- company-mode completion back-end using Semantic
+;;; company-semantic.el --- company-mode completion backend using Semantic
;; Copyright (C) 2009-2011, 2013 Free Software Foundation, Inc.
;;; Code:
(require 'company)
-(eval-when-compile (require 'cl))
+(require 'cl-lib)
(defvar semantic-idle-summary-function)
(declare-function semantic-documentation-for-tag "semantic/doc" )
(declare-function semantic-tag-start "semantic/tag")
(declare-function semantic-tag-buffer "semantic/tag")
(declare-function semantic-active-p "semantic")
+(declare-function semantic-format-tag-prototype "semantic/format")
(defgroup company-semantic nil
- "Completion back-end using Semantic."
+ "Completion backend using Semantic."
:group 'company)
(defcustom company-semantic-metadata-function 'company-semantic-summary-and-doc
(defvar company-semantic-modes '(c-mode c++-mode jde-mode java-mode))
-(defvar company-semantic--current-tags nil
+(defvar-local company-semantic--current-tags nil
"Tags for the current context.")
+(defun company-semantic-documentation-for-tag (tag)
+ (when (semantic-tag-buffer tag)
+ ;; When TAG's buffer is unknown, the function below raises an error.
+ (semantic-documentation-for-tag tag)))
+
(defun company-semantic-doc-or-summary (tag)
- (or (semantic-documentation-for-tag tag)
+ (or (company-semantic-documentation-for-tag tag)
(and (require 'semantic-idle nil t)
(require 'semantic/idle nil t)
(funcall semantic-idle-summary-function tag nil t))))
(defun company-semantic-summary-and-doc (tag)
- (let ((doc (semantic-documentation-for-tag tag))
+ (let ((doc (company-semantic-documentation-for-tag tag))
(summary (funcall semantic-idle-summary-function tag nil t)))
(and (stringp doc)
(string-match "\n*\\(.*\\)$" doc)
(setq doc (match-string 1 doc)))
- (concat (funcall semantic-idle-summary-function tag nil t)
+ (concat summary
(when doc
(if (< (+ (length doc) (length summary) 4) (window-width))
" -- "
doc)))
(defun company-semantic-doc-buffer (tag)
- (let ((doc (semantic-documentation-for-tag tag)))
+ (let ((doc (company-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)))))
+ (company-doc-buffer
+ (concat (funcall semantic-idle-summary-function tag nil t)
+ "\n"
+ doc)))))
(defsubst company-semantic-completions (prefix)
(ignore-errors
(push tag company-semantic--current-tags)))
(delete "" (mapcar 'semantic-tag-name company-semantic--current-tags)))
+(defun company-semantic-annotation (argument tags)
+ (let* ((tag (assoc argument tags))
+ (kind (when tag (elt tag 1))))
+ (cl-case kind
+ (function (let* ((prototype (semantic-format-tag-prototype tag nil nil))
+ (par-pos (string-match "(" prototype)))
+ (when par-pos (substring prototype par-pos)))))))
+
(defun company-semantic--pre-prefix-length (prefix-length)
"Sum up the length of all chained symbols before POS.
Symbols are chained by \".\" or \"->\"."
(save-excursion
(let ((pos (point)))
(goto-char (- (point) prefix-length))
- (while (looking-back "->\\|\\.")
+ (while (looking-back "->\\|\\." (- (point) 2))
(goto-char (match-beginning 0))
(skip-syntax-backward "w_"))
(- pos (point)))))
;;;###autoload
(defun company-semantic (command &optional arg &rest ignored)
- "`company-mode' completion back-end using CEDET Semantic."
+ "`company-mode' completion backend using CEDET Semantic."
(interactive (list 'interactive))
- (case command
+ (cl-case command
(interactive (company-begin-backend 'company-semantic))
(prefix (and (featurep 'semantic)
(semantic-active-p)
(not (company-in-string-or-comment))
(or (company-semantic--grab) 'stop)))
(candidates (if (and (equal arg "")
- (not (looking-back "->\\|\\.")))
+ (not (looking-back "->\\|\\." (- (point) 2))))
(company-semantic-completions-raw arg)
(company-semantic-completions arg)))
(meta (funcall company-semantic-metadata-function
(assoc arg company-semantic--current-tags)))
+ (annotation (company-semantic-annotation arg
+ company-semantic--current-tags))
(doc-buffer (company-semantic-doc-buffer
(assoc arg company-semantic--current-tags)))
;; Because "" is an empty context and doesn't return local variables.