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e8af40ee | 1 | ;;; autoconf.el --- mode for editing Autoconf configure.in files |
c926a73b | 2 | |
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3 | ;; Copyright (C) 2000, 2001, 2002 2003, 2004, 2005 |
4 | ;; Free Software Foundation, Inc. | |
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5 | |
6 | ;; Author: Dave Love <fx@gnu.org> | |
7 | ;; Keywords: languages | |
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8 | |
9 | ;; This file is part of GNU Emacs. | |
10 | ||
11 | ;; GNU Emacs is free software; you can redistribute it and/or modify | |
12 | ;; it under the terms of the GNU General Public License as published by | |
13 | ;; the Free Software Foundation; either version 2, or (at your option) | |
14 | ;; any later version. | |
15 | ||
16 | ;; GNU Emacs is distributed in the hope that it will be useful, | |
17 | ;; but WITHOUT ANY WARRANTY; without even the implied warranty of | |
18 | ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
19 | ;; GNU General Public License for more details. | |
20 | ||
21 | ;; You should have received a copy of the GNU General Public License | |
22 | ;; along with GNU Emacs; see the file COPYING. If not, write to the | |
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23 | ;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
24 | ;; Boston, MA 02110-1301, USA. | |
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25 | |
26 | ;;; Commentary: | |
27 | ||
28 | ;; Provides fairly minimal font-lock, imenu and indentation support | |
29 | ;; for editing configure.in files. Only Autoconf syntax is processed. | |
30 | ;; There is no attempt to deal with shell text -- probably that will | |
31 | ;; always lose. | |
32 | ||
33 | ;; This is specialized for configure.in files. It doesn't inherit the | |
34 | ;; general M4 stuff from M4 mode. | |
35 | ||
36 | ;; There is also an autoconf-mode.el in existence. That appears to be | |
37 | ;; for editing the Autoconf M4 source, rather than configure.in files. | |
38 | ||
39 | ;;; Code: | |
40 | ||
41 | (defvar autoconf-mode-map (make-sparse-keymap)) | |
42 | ||
43 | (defvar autoconf-mode-hook nil | |
44 | "Hook run by `autoconf-mode'.") | |
45 | ||
46 | (defconst autoconf-font-lock-syntactic-keywords | |
47 | '(("\\<dnl\\>" 0 '(11)))) | |
48 | ||
49 | (defconst autoconf-definition-regexp | |
50 | "AC_\\(SUBST\\|DEFINE\\(_UNQUOTED\\)?\\)(\\(\\sw+\\)") | |
51 | ||
52 | (defvar autoconf-font-lock-keywords | |
707994d2 | 53 | `(("A[CHMS]_\\sw+" . font-lock-keyword-face) |
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54 | (,autoconf-definition-regexp |
55 | 3 font-lock-function-name-face) | |
56 | ;; Are any other M4 keywords really appropriate for configure.in, | |
57 | ;; given that we do `dnl'? | |
58 | ("changequote" . font-lock-keyword-face))) | |
59 | ||
60 | (defvar autoconf-mode-syntax-table | |
61 | (let ((table (make-syntax-table))) | |
62 | (modify-syntax-entry ?\" "." table) | |
63 | (modify-syntax-entry ?\n ">" table) | |
64 | (modify-syntax-entry ?# "<" table) | |
65 | table)) | |
66 | ||
67 | (defvar autoconf-imenu-generic-expression | |
68 | (list (list nil autoconf-definition-regexp 3))) | |
69 | ||
70 | ;; It's not clear how best to implement this. | |
71 | (defun autoconf-current-defun-function () | |
72 | "Function to use for `add-log-current-defun-function' in Autoconf mode. | |
73 | This version looks back for an AC_DEFINE or AC_SUBST. It will stop | |
74 | searching backwards at another AC_... command." | |
75 | (save-excursion | |
f4103aec | 76 | (with-syntax-table (copy-syntax-table autoconf-mode-syntax-table) |
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77 | (modify-syntax-entry ?_ "w") |
78 | (if (re-search-backward autoconf-definition-regexp | |
79 | (save-excursion (beginning-of-defun) (point)) | |
80 | t) | |
81 | (match-string-no-properties 3))))) | |
82 | ||
83 | ;;;###autoload | |
84 | (defun autoconf-mode () | |
85 | "Major mode for editing Autoconf configure.in files." | |
86 | (interactive) | |
87 | (kill-all-local-variables) | |
88 | (use-local-map autoconf-mode-map) | |
89 | (setq major-mode 'autoconf-mode) | |
90 | (setq mode-name "Autoconf") | |
91 | (set-syntax-table autoconf-mode-syntax-table) | |
92 | (set (make-local-variable 'parens-require-spaces) nil) ; for M4 arg lists | |
93 | (set (make-local-variable 'defun-prompt-regexp) | |
94 | "^[ \t]*A[CM]_\\(\\sw\\|\\s_\\)+") | |
95 | (set (make-local-variable 'comment-start) "dnl ") | |
ed88dbcb | 96 | (set (make-local-variable 'comment-start-skip) "\\(?:\\<dnl\\|#\\) +") |
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97 | (set (make-local-variable 'font-lock-syntactic-keywords) |
98 | autoconf-font-lock-syntactic-keywords) | |
99 | (set (make-local-variable 'font-lock-defaults) | |
100 | `(autoconf-font-lock-keywords nil nil (("_" . "w")))) | |
101 | (set (make-local-variable 'imenu-generic-expression) | |
102 | autoconf-imenu-generic-expression) | |
103 | (set (make-local-variable 'imenu-syntax-alist) '(("_" . "w"))) | |
104 | (set (make-local-variable 'indent-line-function) #'indent-relative) | |
105 | (set (make-local-variable 'add-log-current-defun-function) | |
106 | #'autoconf-current-defun-function) | |
9a969196 | 107 | (run-mode-hooks 'autoconf-mode-hook)) |
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108 | |
109 | (provide 'autoconf-mode) | |
110 | ||
ab5796a9 | 111 | ;;; arch-tag: 4f44778f-2ab3-49a1-a103-f0acb9df2de4 |
c926a73b | 112 | ;;; autoconf.el ends here |