home *** CD-ROM | disk | FTP | other *** search
Text File | 1993-06-08 | 47.2 KB | 1,238 lines |
- ;;; fortran.el --- Fortran mode for GNU Emacs
-
- ;;; Copyright (c) 1986, 1993 Free Software Foundation, Inc.
-
- ;; Author: Michael D. Prange <prange@erl.mit.edu>
- ;; Maintainer: bug-fortran-mode@erl.mit.edu
- ;; Version 1.30.2 (June 1, 1993)
- ;; Keywords: languages
-
- ;; This file is part of GNU Emacs.
-
- ;; GNU Emacs 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, or (at your option)
- ;; any later version.
-
- ;; GNU Emacs 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 GNU Emacs; see the file COPYING. If not, write to
- ;; the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
-
- ;;; Commentary:
-
- ;; Fortran mode has been upgraded and is now maintained by Stephen A. Wood
- ;; (saw@cebaf.gov). It now will use either fixed format continuation line
- ;; markers (character in 6th column), or tab format continuation line style
- ;; (digit after a TAB character.) A auto-fill mode has been added to
- ;; automatically wrap fortran lines that get too long.
-
- ;; We acknowledge many contributions and valuable suggestions by
- ;; Lawrence R. Dodd, Ralf Fassel, Ralph Finch, Stephen Gildea,
- ;; Dr. Anil Gokhale, Ulrich Mueller, Mark Neale, Eric Prestemon,
- ;; Gary Sabot and Richard Stallman.
-
- ;;; This file may be used with GNU Emacs version 18.xx if the following
- ;;; variable and function substitutions are made.
- ;;; Replace:
- ;;; frame-width with screen-width
- ;;; auto-fill-function with auto-fill-hook
- ;;; comment-indent-function with comment-indent-hook
- ;;; (setq unread-command-events (list c)) with (setq unread-command-char c)
-
- ;;; Bugs to bug-fortran-mode@erl.mit.edu
-
- (defconst fortran-mode-version "version 1.30.2")
-
- ;;; Code:
-
- ;;;###autoload
- (defvar fortran-tab-mode-default nil
- "*Default tabbing/carriage control style for empty files in Fortran mode.
- A value of t specifies tab-digit style of continuation control.
- A value of nil specifies that continuation lines are marked
- with a character in column 6.")
-
- ;; Buffer local, used to display mode line.
- (defvar fortran-tab-mode-string nil
- "String to appear in mode line when TAB-format mode is on.")
-
- (defvar fortran-do-indent 3
- "*Extra indentation applied to DO blocks.")
-
- (defvar fortran-if-indent 3
- "*Extra indentation applied to IF blocks.")
-
- (defvar fortran-structure-indent 3
- "*Extra indentation applied to STRUCTURE, UNION and MAP blocks.")
-
- (defvar fortran-continuation-indent 5
- "*Extra indentation applied to Fortran continuation lines.")
-
- (defvar fortran-comment-indent-style 'fixed
- "*nil forces comment lines not to be touched,
- 'fixed makes fixed comment indentation to `fortran-comment-line-extra-indent'
- columns beyond `fortran-minimum-statement-indent-fixed' (for
- `indent-tabs-mode' of nil) or `fortran-minimum-statement-indent-tab' (for
- `indent-tabs-mode' of t), and 'relative indents to current
- Fortran indentation plus `fortran-comment-line-extra-indent'.")
-
- (defvar fortran-comment-line-extra-indent 0
- "*Amount of extra indentation for text within full-line comments.")
-
- (defvar comment-line-start nil
- "*Delimiter inserted to start new full-line comment.")
-
- (defvar comment-line-start-skip nil
- "*Regexp to match the start of a full-line comment.")
-
- (defvar fortran-minimum-statement-indent-fixed 6
- "*Minimum statement indentation for fixed format continuation style.")
-
- (defvar fortran-minimum-statement-indent-tab (max tab-width 6)
- "*Minimum statement indentation for TAB format continuation style.")
-
- ;; Note that this is documented in the v18 manuals as being a string
- ;; of length one rather than a single character.
- ;; The code in this file accepts either format for compatibility.
- (defvar fortran-comment-indent-char " "
- "*Single-character string inserted for Fortran comment indentation.
- Normally a space.")
-
- (defvar fortran-line-number-indent 1
- "*Maximum indentation for Fortran line numbers.
- 5 means right-justify them within their five-column field.")
-
- (defvar fortran-check-all-num-for-matching-do nil
- "*Non-nil causes all numbered lines to be treated as possible DO loop ends.")
-
- (defvar fortran-blink-matching-if nil
- "*From a Fortran ENDIF statement, blink the matching IF statement.")
-
- (defvar fortran-continuation-string "$"
- "*Single-character string used for Fortran continuation lines.
- In fixed format continuation style, this character is inserted in
- column 6 by \\[fortran-split-line] to begin a continuation line.
- Also, if \\[fortran-indent-line] finds this at the beginning of a line, it will
- convert the line into a continuation line of the appropriate style.
- Normally $.")
-
- (defvar fortran-comment-region "c$$$"
- "*String inserted by \\[fortran-comment-region]\
- at start of each line in region.")
-
- (defvar fortran-electric-line-number t
- "*Non-nil causes line number digits to be moved to the correct column as\
- typed.")
-
- (defvar fortran-startup-message t
- "*Non-nil displays a startup message when Fortran mode is first called.")
-
- (defvar fortran-column-ruler-fixed
- "0 4 6 10 20 30 40 5\
- 0 60 70\n\
- [ ]|{ | | | | | | | | \
- | | | | |}\n"
- "*String displayed above current line by \\[fortran-column-ruler].
- This variable used in fixed-format mode.")
-
- (defvar fortran-column-ruler-tab
- "0 810 20 30 40 5\
- 0 60 70\n\
- [ ]| { | | | | | | | | \
- | | | | |}\n"
- "*String displayed above current line by \\[fortran-column-ruler].
- This variable used in TAB-format mode.")
-
- (defconst bug-fortran-mode "bug-fortran-mode@erl.mit.edu"
- "Address of mailing list for Fortran mode bugs.")
-
- (defvar fortran-mode-syntax-table nil
- "Syntax table in use in Fortran mode buffers.")
-
- (defvar fortran-analyze-depth 100
- "Number of lines to scan to determine whether to use fixed or TAB format\
- style.")
-
- (defvar fortran-break-before-delimiters t
- "*Non-nil causes `fortran-do-auto-fill' to break lines before delimiters.")
-
- (if fortran-mode-syntax-table
- ()
- (setq fortran-mode-syntax-table (make-syntax-table))
- (modify-syntax-entry ?\; "w" fortran-mode-syntax-table)
- (modify-syntax-entry ?\r " " fortran-mode-syntax-table)
- (modify-syntax-entry ?+ "." fortran-mode-syntax-table)
- (modify-syntax-entry ?- "." fortran-mode-syntax-table)
- (modify-syntax-entry ?= "." fortran-mode-syntax-table)
- (modify-syntax-entry ?* "." fortran-mode-syntax-table)
- (modify-syntax-entry ?/ "." fortran-mode-syntax-table)
- (modify-syntax-entry ?\' "\"" fortran-mode-syntax-table)
- (modify-syntax-entry ?\" "\"" fortran-mode-syntax-table)
- (modify-syntax-entry ?\\ "/" fortran-mode-syntax-table)
- (modify-syntax-entry ?. "w" fortran-mode-syntax-table)
- (modify-syntax-entry ?_ "w" fortran-mode-syntax-table)
- (modify-syntax-entry ?\n ">" fortran-mode-syntax-table))
-
- (defvar fortran-mode-map ()
- "Keymap used in Fortran mode.")
- (if fortran-mode-map
- ()
- (setq fortran-mode-map (make-sparse-keymap))
- (define-key fortran-mode-map ";" 'fortran-abbrev-start)
- (define-key fortran-mode-map "\C-c;" 'fortran-comment-region)
- (define-key fortran-mode-map "\e\C-a" 'beginning-of-fortran-subprogram)
- (define-key fortran-mode-map "\e\C-e" 'end-of-fortran-subprogram)
- (define-key fortran-mode-map "\e;" 'fortran-indent-comment)
- (define-key fortran-mode-map "\e\C-h" 'mark-fortran-subprogram)
- (define-key fortran-mode-map "\e\n" 'fortran-split-line)
- (define-key fortran-mode-map "\n" 'fortran-indent-new-line)
- (define-key fortran-mode-map "\e\C-q" 'fortran-indent-subprogram)
- (define-key fortran-mode-map "\C-c\C-w" 'fortran-window-create-momentarily)
- (define-key fortran-mode-map "\C-c\C-r" 'fortran-column-ruler)
- (define-key fortran-mode-map "\C-c\C-p" 'fortran-previous-statement)
- (define-key fortran-mode-map "\C-c\C-n" 'fortran-next-statement)
- (define-key fortran-mode-map "\t" 'fortran-indent-line)
- (define-key fortran-mode-map "0" 'fortran-electric-line-number)
- (define-key fortran-mode-map "1" 'fortran-electric-line-number)
- (define-key fortran-mode-map "2" 'fortran-electric-line-number)
- (define-key fortran-mode-map "3" 'fortran-electric-line-number)
- (define-key fortran-mode-map "4" 'fortran-electric-line-number)
- (define-key fortran-mode-map "5" 'fortran-electric-line-number)
- (define-key fortran-mode-map "6" 'fortran-electric-line-number)
- (define-key fortran-mode-map "7" 'fortran-electric-line-number)
- (define-key fortran-mode-map "8" 'fortran-electric-line-number)
- (define-key fortran-mode-map "9" 'fortran-electric-line-number))
-
- (defvar fortran-mode-abbrev-table nil)
- (if fortran-mode-abbrev-table
- ()
- (let ((ac abbrevs-changed))
- (define-abbrev-table 'fortran-mode-abbrev-table ())
- (define-abbrev fortran-mode-abbrev-table ";au" "automatic" nil)
- (define-abbrev fortran-mode-abbrev-table ";b" "byte" nil)
- (define-abbrev fortran-mode-abbrev-table ";bd" "block data" nil)
- (define-abbrev fortran-mode-abbrev-table ";ch" "character" nil)
- (define-abbrev fortran-mode-abbrev-table ";cl" "close" nil)
- (define-abbrev fortran-mode-abbrev-table ";c" "continue" nil)
- (define-abbrev fortran-mode-abbrev-table ";cm" "common" nil)
- (define-abbrev fortran-mode-abbrev-table ";cx" "complex" nil)
- (define-abbrev fortran-mode-abbrev-table ";df" "define" nil)
- (define-abbrev fortran-mode-abbrev-table ";di" "dimension" nil)
- (define-abbrev fortran-mode-abbrev-table ";do" "double" nil)
- (define-abbrev fortran-mode-abbrev-table ";dc" "double complex" nil)
- (define-abbrev fortran-mode-abbrev-table ";dp" "double precision" nil)
- (define-abbrev fortran-mode-abbrev-table ";dw" "do while" nil)
- (define-abbrev fortran-mode-abbrev-table ";e" "else" nil)
- (define-abbrev fortran-mode-abbrev-table ";ed" "enddo" nil)
- (define-abbrev fortran-mode-abbrev-table ";el" "elseif" nil)
- (define-abbrev fortran-mode-abbrev-table ";en" "endif" nil)
- (define-abbrev fortran-mode-abbrev-table ";eq" "equivalence" nil)
- (define-abbrev fortran-mode-abbrev-table ";ew" "endwhere" nil)
- (define-abbrev fortran-mode-abbrev-table ";ex" "external" nil)
- (define-abbrev fortran-mode-abbrev-table ";ey" "entry" nil)
- (define-abbrev fortran-mode-abbrev-table ";f" "format" nil)
- (define-abbrev fortran-mode-abbrev-table ";fa" ".false." nil)
- (define-abbrev fortran-mode-abbrev-table ";fu" "function" nil)
- (define-abbrev fortran-mode-abbrev-table ";g" "goto" nil)
- (define-abbrev fortran-mode-abbrev-table ";im" "implicit" nil)
- (define-abbrev fortran-mode-abbrev-table ";ib" "implicit byte" nil)
- (define-abbrev fortran-mode-abbrev-table ";ic" "implicit complex" nil)
- (define-abbrev fortran-mode-abbrev-table ";ich" "implicit character" nil)
- (define-abbrev fortran-mode-abbrev-table ";ii" "implicit integer" nil)
- (define-abbrev fortran-mode-abbrev-table ";il" "implicit logical" nil)
- (define-abbrev fortran-mode-abbrev-table ";ir" "implicit real" nil)
- (define-abbrev fortran-mode-abbrev-table ";inc" "include" nil)
- (define-abbrev fortran-mode-abbrev-table ";in" "integer" nil)
- (define-abbrev fortran-mode-abbrev-table ";intr" "intrinsic" nil)
- (define-abbrev fortran-mode-abbrev-table ";l" "logical" nil)
- (define-abbrev fortran-mode-abbrev-table ";n" "namelist" nil)
- (define-abbrev fortran-mode-abbrev-table ";o" "open" nil) ; was ;op
- (define-abbrev fortran-mode-abbrev-table ";pa" "parameter" nil)
- (define-abbrev fortran-mode-abbrev-table ";pr" "program" nil)
- (define-abbrev fortran-mode-abbrev-table ";ps" "pause" nil)
- (define-abbrev fortran-mode-abbrev-table ";p" "print" nil)
- (define-abbrev fortran-mode-abbrev-table ";rc" "record" nil)
- (define-abbrev fortran-mode-abbrev-table ";re" "real" nil)
- (define-abbrev fortran-mode-abbrev-table ";r" "read" nil)
- (define-abbrev fortran-mode-abbrev-table ";rt" "return" nil)
- (define-abbrev fortran-mode-abbrev-table ";rw" "rewind" nil)
- (define-abbrev fortran-mode-abbrev-table ";s" "stop" nil)
- (define-abbrev fortran-mode-abbrev-table ";sa" "save" nil)
- (define-abbrev fortran-mode-abbrev-table ";st" "structure" nil)
- (define-abbrev fortran-mode-abbrev-table ";sc" "static" nil)
- (define-abbrev fortran-mode-abbrev-table ";su" "subroutine" nil)
- (define-abbrev fortran-mode-abbrev-table ";tr" ".true." nil)
- (define-abbrev fortran-mode-abbrev-table ";ty" "type" nil)
- (define-abbrev fortran-mode-abbrev-table ";vo" "volatile" nil)
- (define-abbrev fortran-mode-abbrev-table ";w" "write" nil)
- (define-abbrev fortran-mode-abbrev-table ";wh" "where" nil)
- (setq abbrevs-changed ac)))
-
- ;;;###autoload
- (defun fortran-mode ()
- "Major mode for editing Fortran code.
- \\[fortran-indent-line] indents the current Fortran line correctly.
- DO statements must not share a common CONTINUE.
-
- Type ;? or ;\\[help-command] to display a list of built-in\
- abbrevs for Fortran keywords.
-
- Key definitions:
- \\{fortran-mode-map}
-
- Variables controlling indentation style and extra features:
-
- comment-start
- Normally nil in Fortran mode. If you want to use comments
- starting with `!', set this to the string \"!\".
- fortran-do-indent
- Extra indentation within do blocks. (default 3)
- fortran-if-indent
- Extra indentation within if blocks. (default 3)
- fortran-structure-indent
- Extra indentation within structure, union and map blocks. (default 3)
- fortran-continuation-indent
- Extra indentation applied to continuation statements. (default 5)
- fortran-comment-line-extra-indent
- Amount of extra indentation for text within full-line comments. (default 0)
- fortran-comment-indent-style
- nil means don't change indentation of text in full-line comments,
- fixed means indent that text at `fortran-comment-line-extra-indent' beyond
- the value of `fortran-minimum-statement-indent-fixed' (for fixed
- format continuation style) or `fortran-minimum-statement-indent-tab'
- (for TAB format continuation style).
- relative means indent at `fortran-comment-line-extra-indent' beyond the
- indentation for a line of code.
- (default 'fixed)
- fortran-comment-indent-char
- Single-character string to be inserted instead of space for
- full-line comment indentation. (default \" \")
- fortran-minimum-statement-indent-fixed
- Minimum indentation for Fortran statements in fixed format mode. (def.6)
- fortran-minimum-statement-indent-tab
- Minimum indentation for Fortran statements in TAB format mode. (default 9)
- fortran-line-number-indent
- Maximum indentation for line numbers. A line number will get
- less than this much indentation if necessary to avoid reaching
- column 5. (default 1)
- fortran-check-all-num-for-matching-do
- Non-nil causes all numbered lines to be treated as possible \"continue\"
- statements. (default nil)
- fortran-blink-matching-if
- From a Fortran ENDIF statement, blink the matching IF statement.
- (default nil)
- fortran-continuation-string
- Single-character string to be inserted in column 5 of a continuation
- line. (default \"$\")
- fortran-comment-region
- String inserted by \\[fortran-comment-region] at start of each line in
- region. (default \"c$$$\")
- fortran-electric-line-number
- Non-nil causes line number digits to be moved to the correct column
- as typed. (default t)
- fortran-break-before-delimiters
- Non-nil causes `fortran-do-auto-fill' breaks lines before delimiters.
- (default t)
- fortran-startup-message
- Set to nil to inhibit message first time Fortran mode is used.
-
- Turning on Fortran mode calls the value of the variable `fortran-mode-hook'
- with no args, if that value is non-nil."
- (interactive)
- (kill-all-local-variables)
- (if fortran-startup-message
- (message "Emacs Fortran mode %s. Bugs to %s"
- fortran-mode-version bug-fortran-mode))
- (setq fortran-startup-message nil)
- (setq local-abbrev-table fortran-mode-abbrev-table)
- (set-syntax-table fortran-mode-syntax-table)
- (make-local-variable 'fortran-break-before-delimiters)
- (setq fortran-break-before-delimiters t)
- (make-local-variable 'indent-line-function)
- (setq indent-line-function 'fortran-indent-line)
- (make-local-variable 'comment-indent-function)
- (setq comment-indent-function 'fortran-comment-hook)
- (make-local-variable 'comment-line-start-skip)
- (setq comment-line-start-skip
- "^[Cc*]\\(\\([^ \t\n]\\)\\2\\2*\\)?[ \t]*\\|^#.*")
- (make-local-variable 'comment-line-start)
- (setq comment-line-start "c")
- (make-local-variable 'comment-start-skip)
- (setq comment-start-skip "![ \t]*")
- (make-local-variable 'comment-start)
- (setq comment-start nil)
- (make-local-variable 'require-final-newline)
- (setq require-final-newline t)
- (make-local-variable 'abbrev-all-caps)
- (setq abbrev-all-caps t)
- (make-local-variable 'indent-tabs-mode)
- (setq indent-tabs-mode nil)
- ;;;(setq abbrev-mode t) ; ?? (abbrev-mode 1) instead??
- (setq fill-column 72) ; Already local?
- (use-local-map fortran-mode-map)
- (setq mode-name "Fortran")
- (setq major-mode 'fortran-mode)
- ;;;(make-local-variable 'fortran-tab-mode)
- (make-local-variable 'fortran-comment-line-extra-indent)
- (make-local-variable 'fortran-minimum-statement-indent-fixed)
- (make-local-variable 'fortran-minimum-statement-indent-tab)
- (make-local-variable 'fortran-column-ruler-fixed)
- (make-local-variable 'fortran-column-ruler-tab)
- (make-local-variable 'fortran-tab-mode-string)
- (setq fortran-tab-mode-string " TAB-format")
- (setq indent-tabs-mode (fortran-analyze-file-format))
- (run-hooks 'fortran-mode-hook))
-
- (defun fortran-comment-hook ()
- (save-excursion
- (skip-chars-backward " \t")
- (max (+ 1 (current-column))
- comment-column)))
-
- (defun fortran-indent-comment ()
- "Align or create comment on current line.
- Existing comments of all types are recognized and aligned.
- If the line has no comment, a side-by-side comment is inserted and aligned
- if the value of comment-start is not nil.
- Otherwise, a separate-line comment is inserted, on this line
- or on a new line inserted before this line if this line is not blank."
- (interactive)
- (beginning-of-line)
- ;; Recognize existing comments of either kind.
- (cond ((looking-at comment-line-start-skip)
- (fortran-indent-line))
- ((fortran-find-comment-start-skip) ; catches any inline comment and
- ; leaves point after comment-start-skip
- (if comment-start-skip
- (progn (goto-char (match-beginning 0))
- (if (not (= (current-column) (fortran-comment-hook)))
- (progn (delete-horizontal-space)
- (indent-to (fortran-comment-hook)))))
- (end-of-line))) ; otherwise goto end of line or sth else?
- ;; No existing comment.
- ;; If side-by-side comments are defined, insert one,
- ;; unless line is now blank.
- ((and comment-start (not (looking-at "^[ \t]*$")))
- (end-of-line)
- (delete-horizontal-space)
- (indent-to (fortran-comment-hook))
- (insert comment-start))
- ;; Else insert separate-line comment, making a new line if nec.
- (t
- (if (looking-at "^[ \t]*$")
- (delete-horizontal-space)
- (beginning-of-line)
- (insert "\n")
- (forward-char -1))
- (insert comment-line-start)
- (insert-char (if (stringp fortran-comment-indent-char)
- (aref fortran-comment-indent-char 0)
- fortran-comment-indent-char)
- (- (calculate-fortran-indent) (current-column))))))
-
- (defun fortran-comment-region (beg-region end-region arg)
- "Comments every line in the region.
- Puts fortran-comment-region at the beginning of every line in the region.
- BEG-REGION and END-REGION are args which specify the region boundaries.
- With non-nil ARG, uncomments the region."
- (interactive "*r\nP")
- (let ((end-region-mark (make-marker)) (save-point (point-marker)))
- (set-marker end-region-mark end-region)
- (goto-char beg-region)
- (beginning-of-line)
- (if (not arg) ;comment the region
- (progn (insert fortran-comment-region)
- (while (and (= (forward-line 1) 0)
- (< (point) end-region-mark))
- (insert fortran-comment-region)))
- (let ((com (regexp-quote fortran-comment-region))) ;uncomment the region
- (if (looking-at com)
- (delete-region (point) (match-end 0)))
- (while (and (= (forward-line 1) 0)
- (< (point) end-region-mark))
- (if (looking-at com)
- (delete-region (point) (match-end 0))))))
- (goto-char save-point)
- (set-marker end-region-mark nil)
- (set-marker save-point nil)))
-
- (defun fortran-abbrev-start ()
- "Typing ;\\[help-command] or ;? lists all the Fortran abbrevs.
- Any other key combination is executed normally."
- (interactive)
- (let (c)
- (insert last-command-char)
- (if (or (eq (setq c (read-event)) ??) ;insert char if not equal to `?'
- (eq c help-char))
- (fortran-abbrev-help)
- (setq unread-command-events (list c)))))
-
- (defun fortran-abbrev-help ()
- "List the currently defined abbrevs in Fortran mode."
- (interactive)
- (message "Listing abbrev table...")
- (display-buffer (fortran-prepare-abbrev-list-buffer))
- (message "Listing abbrev table...done"))
-
- (defun fortran-prepare-abbrev-list-buffer ()
- (save-excursion
- (set-buffer (get-buffer-create "*Abbrevs*"))
- (erase-buffer)
- (insert-abbrev-table-description 'fortran-mode-abbrev-table t)
- (goto-char (point-min))
- (set-buffer-modified-p nil)
- (edit-abbrevs-mode))
- (get-buffer-create "*Abbrevs*"))
-
- (defun fortran-column-ruler ()
- "Inserts a column ruler momentarily above current line, till next keystroke.
- The ruler is defined by the value of `fortran-column-ruler'.
- The key typed is executed unless it is SPC."
- (interactive)
- (momentary-string-display
- (if indent-tabs-mode
- fortran-column-ruler-tab
- fortran-column-ruler-fixed)
- (save-excursion
- (beginning-of-line)
- (if (eq (window-start (selected-window))
- (window-point (selected-window)))
- (progn (forward-line) (point))
- (point)))
- nil "Type SPC or any command to erase ruler."))
-
- (defun fortran-window-create ()
- "Makes the window 72 columns wide.
- See also `fortran-window-create-momentarily'."
- (interactive)
- (condition-case error
- (progn
- (let ((window-min-width 2))
- (if (< (window-width) (frame-width))
- (enlarge-window-horizontally (- (frame-width)
- (window-width) 1)))
- (split-window-horizontally 73)
- (other-window 1)
- (switch-to-buffer " fortran-window-extra" t)
- (select-window (previous-window))))
- (error (message "No room for Fortran window.")
- 'error)))
-
- (defun fortran-window-create-momentarily (&optional arg)
- "Momentarily makes the window 72 columns wide.
- Optional ARG non-nil and non-unity disables the momentary feature.
- See also `fortran-window-create'."
- (interactive "p")
- (if (or (not arg)
- (= arg 1))
- (save-window-excursion
- (if (not (equal (fortran-window-create) 'error))
- (progn (message "Type SPC to continue editing.")
- (let ((char (read-event)))
- (or (equal char (string-to-char " "))
- (setq unread-command-events (list char)))))))
- (fortran-window-create)))
-
- (defun fortran-split-line ()
- "Break line at point and insert continuation marker and alignment."
- (interactive)
- (delete-horizontal-space)
- (if (save-excursion (beginning-of-line) (looking-at comment-line-start-skip))
- (insert "\n" comment-line-start " ")
- (if indent-tabs-mode
- (progn
- (insert "\n\t")
- (insert-char (fortran-numerical-continuation-char) 1))
- (insert "\n " fortran-continuation-string)));Space after \n important
- (fortran-indent-line)) ;when the cont string is C, c or *.
-
- (defun fortran-numerical-continuation-char ()
- "Return a digit for tab-digit style of continuation lines.
- If, previous line is a tab-digit continuation line, returns that digit
- plus one. Otherwise return 1. Zero not allowed."
- (save-excursion
- (forward-line -1)
- (if (looking-at "\t[1-9]")
- (+ ?1 (% (- (char-after (+ (point) 1)) ?0) 9))
- ?1)))
-
- (defun delete-horizontal-regexp (chars)
- "Delete all characters in CHARS around point.
- CHARS is like the inside of a [...] in a regular expression
- except that ] is never special and \ quotes ^, - or \."
- (interactive "*s")
- (skip-chars-backward chars)
- (delete-region (point) (progn (skip-chars-forward chars) (point))))
-
- (defun fortran-electric-line-number (arg)
- "Self insert, but if part of a Fortran line number indent it automatically.
- Auto-indent does not happen if a numeric arg is used."
- (interactive "P")
- (if (or arg (not fortran-electric-line-number))
- (if arg
- (self-insert-command (prefix-numeric-value arg))
- (self-insert-command 1))
- (if (or (and (= 5 (current-column))
- (save-excursion
- (beginning-of-line)
- (looking-at " ")));In col 5 with only spaces to left.
- (and (= (if indent-tabs-mode
- fortran-minimum-statement-indent-tab
- fortran-minimum-statement-indent-fixed) (current-column))
- (save-excursion
- (beginning-of-line)
- (looking-at "\t"));In col 8 with a single tab to the left.
- (not (or (eq last-command 'fortran-indent-line)
- (eq last-command
- 'fortran-indent-new-line))))
- (save-excursion
- (re-search-backward "[^ \t0-9]"
- (save-excursion
- (beginning-of-line)
- (point))
- t)) ;not a line number
- (looking-at "[0-9]") ;within a line number
- )
- (self-insert-command (prefix-numeric-value arg))
- (skip-chars-backward " \t")
- (insert last-command-char)
- (fortran-indent-line))))
-
- (defun beginning-of-fortran-subprogram ()
- "Moves point to the beginning of the current Fortran subprogram."
- (interactive)
- (let ((case-fold-search t))
- (beginning-of-line -1)
- (re-search-backward "^[ \t0-9]*end\\b[ \t]*[^ \t=(a-z]" nil 'move)
- (if (looking-at "^[ \t0-9]*end\\b[ \t]*[^ \t=(a-z]")
- (forward-line 1))))
-
- (defun end-of-fortran-subprogram ()
- "Moves point to the end of the current Fortran subprogram."
- (interactive)
- (let ((case-fold-search t))
- (beginning-of-line 2)
- (re-search-forward "^[ \t0-9]*end\\b[ \t]*[^ \t=(a-z]" nil 'move)
- (goto-char (match-beginning 0))
- (forward-line 1)))
-
- (defun mark-fortran-subprogram ()
- "Put mark at end of Fortran subprogram, point at beginning.
- The marks are pushed."
- (interactive)
- (end-of-fortran-subprogram)
- (push-mark (point))
- (beginning-of-fortran-subprogram))
-
- (defun fortran-previous-statement ()
- "Moves point to beginning of the previous Fortran statement.
- Returns `first-statement' if that statement is the first
- non-comment Fortran statement in the file, and nil otherwise."
- (interactive)
- (let (not-first-statement continue-test)
- (beginning-of-line)
- (setq continue-test
- (and
- (not (looking-at comment-line-start-skip))
- (or (looking-at
- (concat "[ \t]*" (regexp-quote fortran-continuation-string)))
- (or (looking-at " [^ 0\n]")
- (looking-at "\t[1-9]")))))
- (while (and (setq not-first-statement (= (forward-line -1) 0))
- (or (looking-at comment-line-start-skip)
- (looking-at "[ \t]*$")
- (looking-at " [^ 0\n]")
- (looking-at "\t[1-9]")
- (looking-at (concat "[ \t]*" comment-start-skip)))))
- (cond ((and continue-test
- (not not-first-statement))
- (message "Incomplete continuation statement."))
- (continue-test
- (fortran-previous-statement))
- ((not not-first-statement)
- 'first-statement))))
-
- (defun fortran-next-statement ()
- "Moves point to beginning of the next Fortran statement.
- Returns `last-statement' if that statement is the last
- non-comment Fortran statement in the file, and nil otherwise."
- (interactive)
- (let (not-last-statement)
- (beginning-of-line)
- (while (and (setq not-last-statement
- (and (= (forward-line 1) 0)
- (not (eobp))))
- (or (looking-at comment-line-start-skip)
- (looking-at "[ \t]*$")
- (looking-at " [^ 0\n]")
- (looking-at "\t[1-9]")
- (looking-at (concat "[ \t]*" comment-start-skip)))))
- (if (not not-last-statement)
- 'last-statement)))
-
- (defun fortran-blink-matching-if ()
- "From a Fortran ENDIF statement, blink the matching IF statement."
- (let ((count 1) (top-of-window (window-start)) matching-if
- (endif-point (point)) message)
- (if (save-excursion (beginning-of-line)
- (skip-chars-forward " \t0-9")
- (looking-at "end[ \t]*if\\b"))
- (progn
- (save-excursion
- (while (and (not (= count 0))
- (not (eq (fortran-previous-statement)
- 'first-statement))
- (not (looking-at
- "^[ \t0-9]*end\\b[ \t]*[^ \t=(a-z]")))
- ; Keep local to subprogram
- (skip-chars-forward " \t0-9")
- (cond ((looking-at "if[ \t]*(")
- (save-excursion
- (if (or
- (looking-at ".*)[ \t]*then\\b[ \t]*[^ \t(=a-z0-9]")
- (let (then-test);multi-line if-then
- (while
- (and (= (forward-line 1) 0)
- ;search forward for then
- (or (looking-at " [^ 0\n]")
- (looking-at "\t[1-9]"))
- (not
- (setq
- then-test
- (looking-at
- ".*then\\b[ \t]*[^ \t(=a-z0-9]")))))
- then-test))
- (setq count (- count 1)))))
- ((looking-at "end[ \t]*if\\b")
- (setq count (+ count 1)))))
- (if (not (= count 0))
- (setq message "No matching if.")
- (if (< (point) top-of-window)
- (setq message (concat "Matches " (buffer-substring
- (progn (beginning-of-line)
- (point))
- (progn (end-of-line)
- (point)))))
- (setq matching-if (point)))))
- (if message
- (message "%s" message)
- (goto-char matching-if)
- (sit-for 1)
- (goto-char endif-point))))))
-
- (defun fortran-indent-line ()
- "Indents current Fortran line based on its contents and on previous lines."
- (interactive)
- (let ((cfi (calculate-fortran-indent)))
- (save-excursion
- (beginning-of-line)
- (if (or (not (= cfi (fortran-current-line-indentation)))
- (and (re-search-forward "^[ \t]*[0-9]+" (+ (point) 4) t)
- (not (fortran-line-number-indented-correctly-p))))
- (fortran-indent-to-column cfi)
- (beginning-of-line)
- (if (and (not (looking-at comment-line-start-skip))
- (fortran-find-comment-start-skip))
- (fortran-indent-comment))))
- ;; Never leave point in left margin.
- (if (< (current-column) cfi)
- (move-to-column cfi))
- (if (and auto-fill-function
- (> (save-excursion (end-of-line) (current-column)) fill-column))
- (save-excursion
- (end-of-line)
- (fortran-do-auto-fill)))
- (if fortran-blink-matching-if
- (fortran-blink-matching-if))))
-
- (defun fortran-indent-new-line ()
- "Reindent the current Fortran line, insert a newline and indent the newline.
- An abbrev before point is expanded if `abbrev-mode' is non-nil."
- (interactive)
- (if abbrev-mode (expand-abbrev))
- (save-excursion
- (beginning-of-line)
- (skip-chars-forward " \t")
- (if (or (looking-at "[0-9]") ;Reindent only where it is most
- (looking-at "end") ;likely to be necessary
- (looking-at "else")
- (looking-at (regexp-quote fortran-continuation-string)))
- (fortran-indent-line)))
- (newline)
- (fortran-indent-line))
-
- (defun fortran-indent-subprogram ()
- "Properly indents the Fortran subprogram which contains point."
- (interactive)
- (save-excursion
- (mark-fortran-subprogram)
- (message "Indenting subprogram...")
- (indent-region (point) (mark) nil))
- (message "Indenting subprogram...done."))
-
- (defun calculate-fortran-indent ()
- "Calculates the Fortran indent column based on previous lines."
- (let (icol first-statement (case-fold-search t)
- (fortran-minimum-statement-indent
- (if indent-tabs-mode
- fortran-minimum-statement-indent-tab
- fortran-minimum-statement-indent-fixed)))
- (save-excursion
- (setq first-statement (fortran-previous-statement))
- (if first-statement
- (setq icol fortran-minimum-statement-indent)
- (progn
- (if (= (point) (point-min))
- (setq icol fortran-minimum-statement-indent)
- (setq icol (fortran-current-line-indentation)))
- (skip-chars-forward " \t0-9")
- (cond ((looking-at "if[ \t]*(")
- (if (or (looking-at ".*)[ \t]*then\\b[ \t]*[^ \t_$(=a-z0-9]")
- (let (then-test) ;multi-line if-then
- (while (and (= (forward-line 1) 0)
- ;;search forward for then
- (or (looking-at " [^ 0\n]")
- (looking-at "\t[1-9]"))
- (not (setq then-test (looking-at
- ".*then\\b[ \t]\
- *[^ \t_$(=a-z0-9]")))))
- then-test))
- (setq icol (+ icol fortran-if-indent))))
- ((looking-at "\\(else\\|elseif\\)\\b")
- (setq icol (+ icol fortran-if-indent)))
- ((looking-at "\\(otherwise\\|else[ \t]*where\\)\\b")
- (setq icol (+ icol fortran-if-indent)))
- ((looking-at "where.*(.*)[ \t]*\n")
- (setq icol (+ icol fortran-if-indent)))
- ((looking-at "do\\b")
- (setq icol (+ icol fortran-do-indent)))
- ((looking-at
- "\\(structure\\|union\\|map\\)\\b[ \t]*[^ \t=(a-z]")
- (setq icol (+ icol fortran-structure-indent)))
- ((looking-at "end\\b[ \t]*[^ \t=(a-z]")
- ;; Previous END resets indent to minimum
- (setq icol fortran-minimum-statement-indent))))))
- (save-excursion
- (beginning-of-line)
- (cond ((looking-at "[ \t]*$"))
- ((looking-at comment-line-start-skip)
- (cond ((eq fortran-comment-indent-style 'relative)
- (setq icol (+ icol fortran-comment-line-extra-indent)))
- ((eq fortran-comment-indent-style 'fixed)
- (setq icol (+ fortran-minimum-statement-indent
- fortran-comment-line-extra-indent))))
- (setq fortran-minimum-statement-indent 0))
- ((or (looking-at (concat "[ \t]*"
- (regexp-quote
- fortran-continuation-string)))
- (looking-at " [^ 0\n]")
- (looking-at "\t[1-9]"))
- (setq icol (+ icol fortran-continuation-indent)))
- ((looking-at "[ \t]*#") ; Check for cpp directive.
- (setq fortran-minimum-statement-indent 0 icol 0))
- (first-statement)
- ((and fortran-check-all-num-for-matching-do
- (looking-at "[ \t]*[0-9]+")
- (fortran-check-for-matching-do))
- (setq icol (- icol fortran-do-indent)))
- (t
- (skip-chars-forward " \t0-9")
- (cond ((looking-at "end[ \t]*if\\b")
- (setq icol (- icol fortran-if-indent)))
- ((looking-at "\\(else\\|elseif\\)\\b")
- (setq icol (- icol fortran-if-indent)))
- ((looking-at "\\(otherwise\\|else[ \t]*where\\)\\b")
- (setq icol (- icol fortran-if-indent)))
- ((looking-at "end[ \t]*where\\b")
- (setq icol (- icol fortran-if-indent)))
- ((and (looking-at "continue\\b")
- (fortran-check-for-matching-do))
- (setq icol (- icol fortran-do-indent)))
- ((looking-at "end[ \t]*do\\b")
- (setq icol (- icol fortran-do-indent)))
- ((looking-at
- "end[ \t]*\
- \\(structure\\|union\\|map\\)\\b[ \t]*[^ \t=(a-z]")
- (setq icol (- icol fortran-structure-indent)))
- ((and (looking-at "end\\b[ \t]*[^ \t=(a-z]")
- (not (= icol fortran-minimum-statement-indent)))
- (message "Warning: `end' not in column %d. Probably\
- an unclosed block." fortran-minimum-statement-indent))))))
- (max fortran-minimum-statement-indent icol)))
-
- (defun fortran-current-line-indentation ()
- "Indentation of current line, ignoring Fortran line number or continuation.
- This is the column position of the first non-whitespace character
- aside from the line number and/or column 5/8 line-continuation character.
- For comment lines, returns indentation of the first
- non-indentation text within the comment."
- (save-excursion
- (beginning-of-line)
- (cond ((looking-at comment-line-start-skip)
- (goto-char (match-end 0))
- (skip-chars-forward
- (if (stringp fortran-comment-indent-char)
- fortran-comment-indent-char
- (char-to-string fortran-comment-indent-char))))
- ((or (looking-at " [^ 0\n]")
- (looking-at "\t[1-9]"))
- (goto-char (match-end 0)))
- (t
- ;; Move past line number.
- (skip-chars-forward "[ \t0-9]");From Uli
- ))
- ;; Move past whitespace.
- (skip-chars-forward " \t")
- (current-column)))
-
- (defun fortran-indent-to-column (col)
- "Indents current line with spaces to column COL.
- notes: 1) A non-zero/non-blank character in column 5 indicates a continuation
- line, and this continuation character is retained on indentation;
- 2) If `fortran-continuation-string' is the first non-whitespace
- character, this is a continuation line;
- 3) A non-continuation line which has a number as the first
- non-whitespace character is a numbered line.
- 4) A TAB followed by a digit indicates a continuation line."
- (save-excursion
- (beginning-of-line)
- (if (looking-at comment-line-start-skip)
- (if fortran-comment-indent-style
- (let ((char (if (stringp fortran-comment-indent-char)
- (aref fortran-comment-indent-char 0)
- fortran-comment-indent-char)))
- (goto-char (match-end 0))
- (delete-horizontal-regexp (concat " \t" (char-to-string char)))
- (insert-char char (- col (current-column)))))
- (if (looking-at "\t[1-9]")
- (if indent-tabs-mode
- (goto-char (match-end 0))
- (delete-char 2)
- (insert " ")
- (insert fortran-continuation-string))
- (if (looking-at " [^ 0\n]")
- (if indent-tabs-mode
- (progn (delete-char 6)
- (insert "\t")
- (insert-char (fortran-numerical-continuation-char) 1))
- (forward-char 6))
- (delete-horizontal-space)
- ;; Put line number in columns 0-4
- ;; or put continuation character in column 5.
- (cond ((eobp))
- ((looking-at (regexp-quote fortran-continuation-string))
- (if indent-tabs-mode
- (progn
- (indent-to
- (if indent-tabs-mode
- fortran-minimum-statement-indent-tab
- fortran-minimum-statement-indent-fixed))
- (delete-char 1)
- (insert-char (fortran-numerical-continuation-char) 1))
- (indent-to 5)
- (forward-char 1)))
- ((looking-at "[0-9]+")
- (let ((extra-space (- 5 (- (match-end 0) (point)))))
- (if (< extra-space 0)
- (message "Warning: line number exceeds 5-digit limit.")
- (indent-to (min fortran-line-number-indent extra-space))))
- (skip-chars-forward "0-9")))))
- ;; Point is now after any continuation character or line number.
- ;; Put body of statement where specified.
- (delete-horizontal-space)
- (indent-to col)
- ;; Indent any comment following code on the same line.
- (if (and comment-start-skip
- (fortran-find-comment-start-skip))
- (progn (goto-char (match-beginning 0))
- (if (not (= (current-column) (fortran-comment-hook)))
- (progn (delete-horizontal-space)
- (indent-to (fortran-comment-hook)))))))))
-
- (defun fortran-line-number-indented-correctly-p ()
- "Return t if current line's line number is correctly indented.
- Do not call if there is no line number."
- (save-excursion
- (beginning-of-line)
- (skip-chars-forward " \t")
- (and (<= (current-column) fortran-line-number-indent)
- (or (= (current-column) fortran-line-number-indent)
- (progn (skip-chars-forward "0-9")
- (= (current-column) 5))))))
-
- (defun fortran-check-for-matching-do ()
- "When called from a numbered statement, returns t if matching DO is found.
- Otherwise return a nil."
- (let (charnum
- (case-fold-search t))
- (save-excursion
- (beginning-of-line)
- (if (looking-at "[ \t]*[0-9]+")
- (progn
- (skip-chars-forward " \t")
- (skip-chars-forward "0") ;skip past leading zeros
- (setq charnum (buffer-substring (point)
- (progn (skip-chars-forward "0-9")
- (point))))
- (beginning-of-line)
- (and (re-search-backward
- (concat
- "\\(^[ \t0-9]*end\\b[ \t]*[^ \t=(a-z]\\)\\|\\(^[ \t0-9]*do\
- [ \t]*0*"
- charnum "\\b\\)\\|\\(^[ \t]*0*" charnum "\\b\\)")
- nil t)
- (looking-at (concat "^[ \t0-9]*do[ \t]*0*" charnum))))))))
-
- (defun fortran-find-comment-start-skip ()
- "Move to past `comment-start-skip' found on current line.
- Return t if `comment-start-skip' found, nil if not."
- ;;; In order to move point only if comment-start-skip is found,
- ;;; this one uses a lot of save-excursions. Note that re-search-forward
- ;;; moves point even if comment-start-skip is inside a string-constant.
- ;;; Some code expects certain values for match-beginning and end
- (interactive)
- (let ((save-match-beginning) (save-match-end))
- (if (save-excursion
- (re-search-forward comment-start-skip
- (save-excursion (end-of-line) (point)) t))
- (progn
- (setq save-match-beginning (match-beginning 0))
- (setq save-match-end (match-end 0))
- (if (fortran-is-in-string-p (match-beginning 0))
- (progn
- (save-excursion
- (goto-char save-match-end)
- (fortran-find-comment-start-skip)) ; recurse for rest of line
- )
- (goto-char save-match-beginning)
- (re-search-forward comment-start-skip
- (save-excursion (end-of-line) (point)) t)
- (goto-char (match-end 0))
- t))
- nil)))
-
- ;;;From: ralf@up3aud1.gwdg.de (Ralf Fassel)
- ;;; Test if TAB format continuation lines work.
- (defun fortran-is-in-string-p (where)
- "Return non-nil if POS (a buffer position) is inside a Fortran string,
- nil else."
- (save-excursion
- (goto-char where)
- (cond
- ((bolp) nil) ; bol is never inside a string
- ((save-excursion ; comment lines too
- (beginning-of-line)(looking-at comment-line-start-skip)) nil)
- (t (let (;; ok, serious now. Init some local vars:
- (parse-state '(0 nil nil nil nil nil 0))
- (quoted-comment-start (if comment-start
- (regexp-quote comment-start)))
- (not-done t)
- parse-limit
- end-of-line
- )
- ;; move to start of current statement
- (fortran-next-statement)
- (fortran-previous-statement)
- ;; now parse up to WHERE
- (while not-done
- (if (or ;; skip to next line if:
- ;; - comment line?
- (looking-at comment-line-start-skip)
- ;; - at end of line?
- (eolp)
- ;; - not in a string and after comment-start?
- (and (not (nth 3 parse-state))
- comment-start
- (equal comment-start
- (char-to-string (preceding-char)))))
- ;; get around a bug in forward-line in versions <= 18.57
- (if (or (> (forward-line 1) 0) (eobp))
- (setq not-done nil))
- ;; else:
- ;; if we are at beginning of code line, skip any
- ;; whitespace, labels and tab continuation markers.
- (if (bolp) (skip-chars-forward " \t0-9"))
- ;; if we are in column <= 5 now, check for continuation char
- (cond ((= 5 (current-column)) (forward-char 1))
- ((and (< (current-column) 5)
- (equal fortran-continuation-string
- (char-to-string (following-char)))
- (forward-char 1))))
- ;; find out parse-limit from here
- (setq end-of-line (save-excursion (end-of-line)(point)))
- (setq parse-limit (min where end-of-line))
- ;; parse max up to comment-start, if non-nil and in current line
- (if comment-start
- (save-excursion
- (if (re-search-forward quoted-comment-start end-of-line t)
- (setq parse-limit (min (point) parse-limit)))))
- ;; now parse if still in limits
- (if (< (point) where)
- (setq parse-state (parse-partial-sexp
- (point) parse-limit nil nil parse-state))
- (setq not-done nil))
- ))
- ;; result is
- (nth 3 parse-state))))))
-
- (defun fortran-auto-fill-mode (arg)
- "Toggle fortran-auto-fill mode.
- With ARG, turn `fortran-auto-fill' mode on iff ARG is positive.
- In `fortran-auto-fill' mode, inserting a space at a column beyond `fill-column'
- automatically breaks the line at a previous space."
- (interactive "P")
- (prog1 (setq auto-fill-function
- (if (if (null arg)
- (not auto-fill-function)
- (> (prefix-numeric-value arg) 0))
- 'fortran-indent-line
- nil))
- ;; update mode-line
- (set-buffer-modified-p (buffer-modified-p))))
-
- (defun fortran-do-auto-fill ()
- (interactive)
- (let* ((opoint (point))
- (bol (save-excursion (beginning-of-line) (point)))
- (eol (save-excursion (end-of-line) (point)))
- (bos (min eol (+ bol (fortran-current-line-indentation))))
- (quote
- (save-excursion
- (goto-char bol)
- (if (looking-at comment-line-start-skip)
- nil ; OK to break quotes on comment lines.
- (move-to-column fill-column)
- (cond ((fortran-is-in-string-p (point))
- (save-excursion (re-search-backward "[^']'[^']" bol t)
- (if fortran-break-before-delimiters
- (point)
- (1+ (point)))))
- (t nil)))))
- ;;
- ;; decide where to split the line. If a position for a quoted
- ;; string was found above then use that, else break the line
- ;; before the last delimiter.
- ;; Delimiters are whitespace, commas, and operators.
- ;; Will break before a pair of *'s.
- ;;
- (fill-point
- (or quote
- (save-excursion
- (move-to-column (1+ fill-column))
- (skip-chars-backward "^ \t\n,'+-/*=)"
- ;;; (if fortran-break-before-delimiters
- ;;; "^ \t\n,'+-/*=" "^ \t\n,'+-/*=)")
- )
- (if (<= (point) (1+ bos))
- (progn
- (move-to-column (1+ fill-column))
- ;;;what is this doing???
- (if (not (re-search-forward "[\t\n,'+-/*)=]" eol t))
- (goto-char bol))))
- (if (bolp)
- (re-search-forward "[ \t]" opoint t)
- (forward-char -1)
- (if (looking-at "'")
- (forward-char 1)
- (skip-chars-backward " \t\*")))
- (if fortran-break-before-delimiters
- (point)
- (1+ (point))))))
- )
- ;; if we are in an in-line comment, don't break unless the
- ;; line of code is longer than it should be. Otherwise
- ;; break the line at the column computed above.
- ;;
- ;; Need to use fortran-find-comment-start-skip to make sure that quoted !'s
- ;; don't prevent a break.
- (if (not (or (save-excursion
- (if (and (re-search-backward comment-start-skip bol t)
- (not (fortran-is-in-string-p (point))))
- (progn
- (skip-chars-backward " \t")
- (< (current-column) (1+ fill-column)))))
- (save-excursion
- (goto-char fill-point)
- (bolp))))
- (if (> (save-excursion
- (goto-char fill-point) (current-column))
- (1+ fill-column))
- (progn (goto-char fill-point)
- (fortran-break-line))
- (save-excursion
- (if (> (save-excursion
- (goto-char fill-point)
- (current-column))
- (+ (calculate-fortran-indent) fortran-continuation-indent))
- (progn
- (goto-char fill-point)
- (fortran-break-line))))))
- ))
- (defun fortran-break-line ()
- (let ((opoint (point))
- (bol (save-excursion (beginning-of-line) (point)))
- (eol (save-excursion (end-of-line) (point)))
- (comment-string nil))
-
- (save-excursion
- (if (and comment-start-skip (fortran-find-comment-start-skip))
- (progn
- (re-search-backward comment-start-skip bol t)
- (setq comment-string (buffer-substring (point) eol))
- (delete-region (point) eol))))
- ;;; Forward line 1 really needs to go to next non white line
- (if (save-excursion (forward-line 1)
- (or (looking-at " [^ 0\n]")
- (looking-at "\t[1-9]")))
- (progn
- (forward-line 1)
- (delete-indentation)
- (delete-char 2)
- (delete-horizontal-space)
- (fortran-do-auto-fill))
- (fortran-split-line))
- (if comment-string
- (save-excursion
- (goto-char bol)
- (end-of-line)
- (delete-horizontal-space)
- (indent-to (fortran-comment-hook))
- (insert comment-string)))))
-
- (defun fortran-analyze-file-format ()
- "Returns nil if Fixed format is used, t if TAB formatting is used.
- Use `fortran-tab-mode-default' if no non-comment statements are found in the
- file before the end or the first `fortran-analyze-depth' lines."
- (let ((i 0))
- (save-excursion
- (goto-char (point-min))
- (setq i 0)
- (while (not (or
- (eobp)
- (looking-at "\t")
- (looking-at " ")
- (> i fortran-analyze-depth)))
- (forward-line)
- (setq i (1+ i)))
- (cond
- ((looking-at "\t") t)
- ((looking-at " ") nil)
- (fortran-tab-mode-default t)
- (t nil)))))
-
- (or (assq 'fortran-tab-mode-string minor-mode-alist)
- (setq minor-mode-alist (cons
- '(fortran-tab-mode-string
- (indent-tabs-mode fortran-tab-mode-string))
- minor-mode-alist)))
-
- (provide 'fortran)
-
- ;;; fortran.el ends here
-
-