| commit | author | age | ||
| 5cb5f7 | 1 | ;;; company-etags.el --- company-mode completion backend for etags |
| C | 2 | |
| 3 | ;; Copyright (C) 2009-2011, 2014 Free Software Foundation, Inc. | |
| 4 | ||
| 5 | ;; Author: Nikolaj Schumacher | |
| 6 | ||
| 7 | ;; This file is part of GNU Emacs. | |
| 8 | ||
| 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. | |
| 13 | ||
| 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. | |
| 18 | ||
| 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/>. | |
| 21 | ||
| 22 | ||
| 23 | ;;; Commentary: | |
| 24 | ;; | |
| 25 | ||
| 26 | ;;; Code: | |
| 27 | ||
| 28 | (require 'company) | |
| 29 | (require 'cl-lib) | |
| 30 | (require 'etags) | |
| 31 | ||
| 32 | (defgroup company-etags nil | |
| 33 | "Completion backend for etags." | |
| 34 | :group 'company) | |
| 35 | ||
| 36 | (defcustom company-etags-use-main-table-list t | |
| 37 | "Always search `tags-table-list' if set. | |
| 38 | If this is disabled, `company-etags' will try to find the one table for each | |
| 39 | buffer automatically." | |
| 40 | :type '(choice (const :tag "off" nil) | |
| 41 | (const :tag "on" t))) | |
| 42 | ||
| 43 | (defcustom company-etags-ignore-case nil | |
| 44 | "Non-nil to ignore case in completion candidates." | |
| 45 | :type 'boolean | |
| 46 | :package-version '(company . "0.7.3")) | |
| 47 | ||
| 48 | (defcustom company-etags-everywhere nil | |
| 49 | "Non-nil to offer completions in comments and strings. | |
| 50 | Set it to t or to a list of major modes." | |
| 51 | :type '(choice (const :tag "Off" nil) | |
| 52 | (const :tag "Any supported mode" t) | |
| 53 | (repeat :tag "Some major modes" | |
| 54 | (symbol :tag "Major mode"))) | |
| 55 | :package-version '(company . "0.9.0")) | |
| 56 | ||
| 57 | (defvar company-etags-modes '(prog-mode c-mode objc-mode c++-mode java-mode | |
| 58 | jde-mode pascal-mode perl-mode python-mode)) | |
| 59 | ||
| 60 | (defvar-local company-etags-buffer-table 'unknown) | |
| 61 | ||
| 62 | (defun company-etags-find-table () | |
| 63 | (let ((file (expand-file-name | |
| 64 | "TAGS" | |
| 65 | (locate-dominating-file (or buffer-file-name | |
| 66 | default-directory) | |
| 67 | "TAGS")))) | |
| 68 | (when (and file (file-regular-p file)) | |
| 69 | (list file)))) | |
| 70 | ||
| 71 | (defun company-etags-buffer-table () | |
| 72 | (or (and company-etags-use-main-table-list tags-table-list) | |
| 73 | (if (eq company-etags-buffer-table 'unknown) | |
| 74 | (setq company-etags-buffer-table (company-etags-find-table)) | |
| 75 | company-etags-buffer-table))) | |
| 76 | ||
| 77 | (defun company-etags--candidates (prefix) | |
| 78 | (let ((tags-table-list (company-etags-buffer-table)) | |
| 79 | (tags-file-name tags-file-name) | |
| 80 | (completion-ignore-case company-etags-ignore-case)) | |
| 81 | (and (or tags-file-name tags-table-list) | |
| 82 | (fboundp 'tags-completion-table) | |
| 83 | (save-excursion | |
| 84 | (visit-tags-table-buffer) | |
| 85 | (all-completions prefix (tags-completion-table)))))) | |
| 86 | ||
| 87 | ;;;###autoload | |
| 88 | (defun company-etags (command &optional arg &rest ignored) | |
| 89 | "`company-mode' completion backend for etags." | |
| 90 | (interactive (list 'interactive)) | |
| 91 | (cl-case command | |
| 92 | (interactive (company-begin-backend 'company-etags)) | |
| 93 | (prefix (and (apply #'derived-mode-p company-etags-modes) | |
| 94 | (or (eq t company-etags-everywhere) | |
| 95 | (apply #'derived-mode-p company-etags-everywhere) | |
| 96 | (not (company-in-string-or-comment))) | |
| 97 | (company-etags-buffer-table) | |
| 98 | (or (company-grab-symbol) 'stop))) | |
| 99 | (candidates (company-etags--candidates arg)) | |
| 100 | (location (let ((tags-table-list (company-etags-buffer-table))) | |
| 101 | (when (fboundp 'find-tag-noselect) | |
| 102 | (save-excursion | |
| 103 | (let ((buffer (find-tag-noselect arg))) | |
| 104 | (cons buffer (with-current-buffer buffer (point)))))))) | |
| 105 | (ignore-case company-etags-ignore-case))) | |
| 106 | ||
| 107 | (provide 'company-etags) | |
| 108 | ;;; company-etags.el ends here | |
