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115 lines
4.2 KiB
EmacsLisp
115 lines
4.2 KiB
EmacsLisp
;;; autoconf.el --- mode for editing Autoconf configure.in files
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;; Copyright (C) 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008
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;; Free Software Foundation, Inc.
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;; Author: Dave Love <fx@gnu.org>
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;; Keywords: languages
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;; This file is part of GNU Emacs.
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;; GNU Emacs is free software; you can redistribute it and/or modify
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;; it under the terms of the GNU General Public License as published by
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;; the Free Software Foundation; either version 3, or (at your option)
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;; any later version.
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;; GNU Emacs is distributed in the hope that it will be useful,
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;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;; GNU General Public License for more details.
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;; You should have received a copy of the GNU General Public License
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;; along with GNU Emacs; see the file COPYING. If not, write to the
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;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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;; Boston, MA 02110-1301, USA.
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;;; Commentary:
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;; Provides fairly minimal font-lock, imenu and indentation support
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;; for editing configure.in files. Only Autoconf syntax is processed.
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;; There is no attempt to deal with shell text -- probably that will
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;; always lose.
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;; This is specialized for configure.in files. It doesn't inherit the
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;; general M4 stuff from M4 mode.
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;; There is also an autoconf-mode.el in existence. That appears to be
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;; for editing the Autoconf M4 source, rather than configure.in files.
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;;; Code:
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(defvar font-lock-syntactic-keywords)
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(defvar autoconf-mode-map (make-sparse-keymap))
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(defvar autoconf-mode-hook nil
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"Hook run by `autoconf-mode'.")
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(defconst autoconf-font-lock-syntactic-keywords
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'(("\\<dnl\\>" 0 '(11))))
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(defconst autoconf-definition-regexp
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"AC_\\(SUBST\\|DEFINE\\(_UNQUOTED\\)?\\)(\\[*\\(\\sw+\\)\\]*")
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(defvar autoconf-font-lock-keywords
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`(("\\_<A[CHMS]_\\sw+" . font-lock-keyword-face)
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(,autoconf-definition-regexp
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3 font-lock-function-name-face)
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;; Are any other M4 keywords really appropriate for configure.in,
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;; given that we do `dnl'?
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("changequote" . font-lock-keyword-face)))
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(defvar autoconf-mode-syntax-table
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(let ((table (make-syntax-table)))
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(modify-syntax-entry ?\" "." table)
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(modify-syntax-entry ?\n ">" table)
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(modify-syntax-entry ?# "<" table)
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table))
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(defvar autoconf-imenu-generic-expression
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(list (list nil autoconf-definition-regexp 3)))
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;; It's not clear how best to implement this.
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(defun autoconf-current-defun-function ()
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"Function to use for `add-log-current-defun-function' in Autoconf mode.
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This version looks back for an AC_DEFINE or AC_SUBST. It will stop
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searching backwards at another AC_... command."
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(save-excursion
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(with-syntax-table (copy-syntax-table autoconf-mode-syntax-table)
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(modify-syntax-entry ?_ "w")
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(if (re-search-backward autoconf-definition-regexp
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(save-excursion (beginning-of-defun) (point))
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t)
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(match-string-no-properties 3)))))
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;;;###autoload
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(defun autoconf-mode ()
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"Major mode for editing Autoconf configure.in files."
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(interactive)
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(kill-all-local-variables)
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(use-local-map autoconf-mode-map)
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(setq major-mode 'autoconf-mode)
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(setq mode-name "Autoconf")
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(set-syntax-table autoconf-mode-syntax-table)
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(set (make-local-variable 'parens-require-spaces) nil) ; for M4 arg lists
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(set (make-local-variable 'defun-prompt-regexp)
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"^[ \t]*A[CM]_\\(\\sw\\|\\s_\\)+")
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(set (make-local-variable 'comment-start) "dnl ")
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(set (make-local-variable 'comment-start-skip) "\\(?:\\<dnl\\|#\\) +")
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(set (make-local-variable 'font-lock-syntactic-keywords)
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autoconf-font-lock-syntactic-keywords)
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(set (make-local-variable 'font-lock-defaults)
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`(autoconf-font-lock-keywords nil nil (("_" . "w"))))
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(set (make-local-variable 'imenu-generic-expression)
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autoconf-imenu-generic-expression)
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(set (make-local-variable 'imenu-syntax-alist) '(("_" . "w")))
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(set (make-local-variable 'indent-line-function) #'indent-relative)
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(set (make-local-variable 'add-log-current-defun-function)
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#'autoconf-current-defun-function)
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(run-mode-hooks 'autoconf-mode-hook))
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(provide 'autoconf-mode)
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;;; arch-tag: 4f44778f-2ab3-49a1-a103-f0acb9df2de4
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;;; autoconf.el ends here
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