HCoop / bpt / emacs.git / blame
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|---|---|---|
| e5167999 ER |
1 | ;;; fortran.el --- Fortran mode for GNU Emacs |
| 2 | ||
| 23029d77 | 3 | ;;; Copyright (c) 1986, 1992 Free Software Foundation, Inc. |
| 9750e079 | 4 | |
| e5167999 ER |
5 | ;; Author: Michael D. Prange <prange@erl.mit.edu> |
| 6 | ;; Maintainer: bug-fortran-mode@erl.mit.edu | |
| 23029d77 | 7 | ;; Version 1.30 (November 18, 1992) |
| fd7fa35a | 8 | ;; Keywords: languages |
| 1a06eabd | 9 | |
| e5167999 ER |
10 | ;; This file is part of GNU Emacs. |
| 11 | ||
| 12 | ;; GNU Emacs is free software; you can redistribute it and/or modify | |
| 13 | ;; it under the terms of the GNU General Public License as published by | |
| 14 | ;; the Free Software Foundation; either version 2, or (at your option) | |
| 15 | ;; any later version. | |
| 16 | ||
| 17 | ;; GNU Emacs is distributed in the hope that it will be useful, | |
| 18 | ;; but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 19 | ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 20 | ;; GNU General Public License for more details. | |
| 21 | ||
| 22 | ;; You should have received a copy of the GNU General Public License | |
| 23 | ;; along with GNU Emacs; see the file COPYING. If not, write to | |
| 24 | ;; the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. | |
| 25 | ||
| 26 | ;;; Commentary: | |
| 27 | ||
| 23029d77 JB |
28 | ;; Fortran mode has been upgraded and is now maintained by Stephen A. Wood |
| 29 | ;; (saw@cebaf.gov). It now will use either fixed format continuation line | |
| 30 | ;; markers (character in 6th column), or tab format coninuation line style | |
| 31 | ;; (digit after a TAB character.) A auto-fill mode has been added to | |
| 32 | ;; automatically wrap fortran lines that get too long. | |
| 33 | ||
| 34 | ;; We acknowledge many contributions and valuable suggestions by | |
| b8cbdf43 RS |
35 | ;; Lawrence R. Dodd, Ralf Fassel, Ralph Finch, Stephen Gildea, |
| 36 | ;; Dr. Anil Gokhale, Ulrich Mueller, Mark Neale, Eric Prestemon, | |
| 37 | ;; Gary Sabot and Richard Stallman. | |
| 38 | ||
| 23029d77 JB |
39 | ;;; This file may be used with GNU Emacs version 18.xx if the following |
| 40 | ;;; variable and function substutions are made. | |
| 41 | ;;; Replace: | |
| dbc4e1c1 | 42 | ;;; unread-command-events with unread-command-char |
| 23029d77 JB |
43 | ;;; frame-width with screen-width |
| 44 | ;;; auto-fill-function with auto-fill-hook | |
| 3dd63760 JB |
45 | |
| 46 | ;;; Bugs to bug-fortran-mode@erl.mit.edu | |
| 47 | ||
| 23029d77 | 48 | (defconst fortran-mode-version "version 1.30") |
| b8cbdf43 | 49 | |
| e5167999 ER |
50 | ;;; Code: |
| 51 | ||
| 3dd63760 JB |
52 | ;;;###autoload |
| 53 | (defvar fortran-tab-mode-default nil | |
| e80f2147 RS |
54 | "*Default tabbing/carriage control style for empty files in Fortran mode. |
| 55 | A value of t specifies tab-digit style of continuation control. | |
| 56 | A value of nil specifies that continuation lines are marked | |
| 57 | with a character in column 6.") | |
| 58 | ||
| e80f2147 | 59 | ;; Buffer local, used to display mode line. |
| 23029d77 JB |
60 | (defvar fortran-tab-mode-string nil |
| 61 | "String to appear in mode line when TAB-format mode is on.") | |
| 3dd63760 JB |
62 | |
| 63 | (defvar fortran-do-indent 3 | |
| b8cbdf43 | 64 | "*Extra indentation applied to DO blocks.") |
| 3dd63760 JB |
65 | |
| 66 | (defvar fortran-if-indent 3 | |
| b8cbdf43 RS |
67 | "*Extra indentation applied to IF blocks.") |
| 68 | ||
| 69 | (defvar fortran-structure-indent 3 | |
| 70 | "*Extra indentation applied to STRUCTURE, UNION and MAP blocks.") | |
| 3dd63760 JB |
71 | |
| 72 | (defvar fortran-continuation-indent 5 | |
| b8cbdf43 | 73 | "*Extra indentation applied to Fortran continuation lines.") |
| 3dd63760 JB |
74 | |
| 75 | (defvar fortran-comment-indent-style 'fixed | |
| 76 | "*nil forces comment lines not to be touched, | |
| 23029d77 JB |
77 | 'fixed makes fixed comment indentation to `fortran-comment-line-extra-indent' |
| 78 | columns beyond `fortran-minimum-statement-indent-fixed' (for | |
| 79 | `indent-tabs-mode' of nil) or `fortran-minimum-statement-indent-tab' (for | |
| 80 | `indent-tabs-mode' of t), and 'relative indents to current | |
| 81 | Fortran indentation plus `fortran-comment-line-extra-indent'.") | |
| 3dd63760 | 82 | |
| 23029d77 | 83 | (defvar fortran-comment-line-extra-indent 0 |
| b8cbdf43 | 84 | "*Amount of extra indentation for text within full-line comments.") |
| 3dd63760 JB |
85 | |
| 86 | (defvar comment-line-start nil | |
| 87 | "*Delimiter inserted to start new full-line comment.") | |
| 88 | ||
| 89 | (defvar comment-line-start-skip nil | |
| 90 | "*Regexp to match the start of a full-line comment.") | |
| 91 | ||
| 23029d77 JB |
92 | (defvar fortran-minimum-statement-indent-fixed 6 |
| 93 | "*Minimum statement indentation for fixed format continuation style.") | |
| 94 | ||
| 95 | (defvar fortran-minimum-statement-indent-tab (max tab-width 6) | |
| 96 | "*Minimum statement indentation for TAB format continuation style.") | |
| 3dd63760 JB |
97 | |
| 98 | ;; Note that this is documented in the v18 manuals as being a string | |
| 99 | ;; of length one rather than a single character. | |
| 100 | ;; The code in this file accepts either format for compatibility. | |
| 101 | (defvar fortran-comment-indent-char " " | |
| 102 | "*Single-character string inserted for Fortran comment indentation. | |
| 103 | Normally a space.") | |
| 104 | ||
| 105 | (defvar fortran-line-number-indent 1 | |
| 106 | "*Maximum indentation for Fortran line numbers. | |
| 107 | 5 means right-justify them within their five-column field.") | |
| 108 | ||
| 109 | (defvar fortran-check-all-num-for-matching-do nil | |
| b8cbdf43 | 110 | "*Non-nil causes all numbered lines to be treated as possible DO loop ends.") |
| 3dd63760 JB |
111 | |
| 112 | (defvar fortran-blink-matching-if nil | |
| b8cbdf43 | 113 | "*From a Fortran ENDIF statement, blink the matching IF statement.") |
| 3dd63760 JB |
114 | |
| 115 | (defvar fortran-continuation-string "$" | |
| b8cbdf43 | 116 | "*Single-character string used for Fortran continuation lines. |
| 3dd63760 JB |
117 | In fixed format continuation style, this character is inserted in |
| 118 | column 6 by \\[fortran-split-line] to begin a continuation line. | |
| 119 | Also, if \\[fortran-indent-line] finds this at the beginning of a line, it will | |
| 120 | convert the line into a continuation line of the appropriate style. | |
| 121 | Normally $.") | |
| 122 | ||
| 123 | (defvar fortran-comment-region "c$$$" | |
| 124 | "*String inserted by \\[fortran-comment-region]\ | |
| 125 | at start of each line in region.") | |
| 126 | ||
| 127 | (defvar fortran-electric-line-number t | |
| 128 | "*Non-nil causes line number digits to be moved to the correct column as\ | |
| 129 | typed.") | |
| 130 | ||
| 131 | (defvar fortran-startup-message t | |
| 132 | "*Non-nil displays a startup message when Fortran mode is first called.") | |
| 133 | ||
| 23029d77 JB |
134 | (defvar fortran-column-ruler-fixed |
| 135 | "0 4 6 10 20 30 40 5\ | |
| 136 | 0 60 70\n\ | |
| 137 | [ ]|{ | | | | | | | | \ | |
| 138 | | | | | |}\n" | |
| 139 | "*String displayed above current line by \\[fortran-column-ruler]. | |
| 140 | This variable used in fixed-format mode.") | |
| 141 | ||
| 142 | (defvar fortran-column-ruler-tab | |
| 143 | "0 810 20 30 40 5\ | |
| 144 | 0 60 70\n\ | |
| 145 | [ ]| { | | | | | | | | \ | |
| 146 | | | | | |}\n" | |
| 147 | "*String displayed above current line by \\[fortran-column-ruler]. | |
| 148 | This variable used in TAB-format mode.") | |
| 3dd63760 JB |
149 | |
| 150 | (defconst bug-fortran-mode "bug-fortran-mode@erl.mit.edu" | |
| 151 | "Address of mailing list for Fortran mode bugs.") | |
| 152 | ||
| 3dd63760 JB |
153 | (defvar fortran-mode-syntax-table nil |
| 154 | "Syntax table in use in Fortran mode buffers.") | |
| 155 | ||
| 156 | (defvar fortran-analyze-depth 100 | |
| 23029d77 | 157 | "Number of lines to scan to determine whether to use fixed or TAB format\ |
| 3dd63760 JB |
158 | style.") |
| 159 | ||
| b8cbdf43 RS |
160 | (defvar fortran-break-before-delimiters t |
| 161 | "*Non-nil causes `fortran-do-auto-fill' to break lines before delimeters.") | |
| 162 | ||
| 3dd63760 JB |
163 | (if fortran-mode-syntax-table |
| 164 | () | |
| 165 | (setq fortran-mode-syntax-table (make-syntax-table)) | |
| 166 | (modify-syntax-entry ?\; "w" fortran-mode-syntax-table) | |
| 167 | (modify-syntax-entry ?\r " " fortran-mode-syntax-table) | |
| 168 | (modify-syntax-entry ?+ "." fortran-mode-syntax-table) | |
| 169 | (modify-syntax-entry ?- "." fortran-mode-syntax-table) | |
| 170 | (modify-syntax-entry ?= "." fortran-mode-syntax-table) | |
| 171 | (modify-syntax-entry ?* "." fortran-mode-syntax-table) | |
| 172 | (modify-syntax-entry ?/ "." fortran-mode-syntax-table) | |
| 173 | (modify-syntax-entry ?\' "\"" fortran-mode-syntax-table) | |
| 174 | (modify-syntax-entry ?\" "\"" fortran-mode-syntax-table) | |
| 175 | (modify-syntax-entry ?\\ "/" fortran-mode-syntax-table) | |
| 176 | (modify-syntax-entry ?. "w" fortran-mode-syntax-table) | |
| b8cbdf43 | 177 | (modify-syntax-entry ?_ "w" fortran-mode-syntax-table) |
| 3dd63760 JB |
178 | (modify-syntax-entry ?\n ">" fortran-mode-syntax-table)) |
| 179 | ||
| 180 | (defvar fortran-mode-map () | |
| b8cbdf43 | 181 | "Keymap used in Fortran mode.") |
| 3dd63760 JB |
182 | (if fortran-mode-map |
| 183 | () | |
| 184 | (setq fortran-mode-map (make-sparse-keymap)) | |
| 185 | (define-key fortran-mode-map ";" 'fortran-abbrev-start) | |
| 186 | (define-key fortran-mode-map "\C-c;" 'fortran-comment-region) | |
| 187 | (define-key fortran-mode-map "\e\C-a" 'beginning-of-fortran-subprogram) | |
| 188 | (define-key fortran-mode-map "\e\C-e" 'end-of-fortran-subprogram) | |
| 189 | (define-key fortran-mode-map "\e;" 'fortran-indent-comment) | |
| 190 | (define-key fortran-mode-map "\e\C-h" 'mark-fortran-subprogram) | |
| 191 | (define-key fortran-mode-map "\e\n" 'fortran-split-line) | |
| 192 | (define-key fortran-mode-map "\n" 'fortran-reindent-then-newline-and-indent) | |
| 193 | (define-key fortran-mode-map "\e\C-q" 'fortran-indent-subprogram) | |
| 194 | (define-key fortran-mode-map "\C-c\C-w" 'fortran-window-create-momentarily) | |
| 195 | (define-key fortran-mode-map "\C-c\C-r" 'fortran-column-ruler) | |
| 196 | (define-key fortran-mode-map "\C-c\C-p" 'fortran-previous-statement) | |
| 197 | (define-key fortran-mode-map "\C-c\C-n" 'fortran-next-statement) | |
| 198 | (define-key fortran-mode-map "\t" 'fortran-indent-line) | |
| 199 | (define-key fortran-mode-map "0" 'fortran-electric-line-number) | |
| 200 | (define-key fortran-mode-map "1" 'fortran-electric-line-number) | |
| 201 | (define-key fortran-mode-map "2" 'fortran-electric-line-number) | |
| 202 | (define-key fortran-mode-map "3" 'fortran-electric-line-number) | |
| 203 | (define-key fortran-mode-map "4" 'fortran-electric-line-number) | |
| 204 | (define-key fortran-mode-map "5" 'fortran-electric-line-number) | |
| 205 | (define-key fortran-mode-map "6" 'fortran-electric-line-number) | |
| 206 | (define-key fortran-mode-map "7" 'fortran-electric-line-number) | |
| 207 | (define-key fortran-mode-map "8" 'fortran-electric-line-number) | |
| 208 | (define-key fortran-mode-map "9" 'fortran-electric-line-number)) | |
| 209 | \f | |
| 210 | (defvar fortran-mode-abbrev-table nil) | |
| 211 | (if fortran-mode-abbrev-table | |
| 212 | () | |
| 213 | (let ((ac abbrevs-changed)) | |
| 214 | (define-abbrev-table 'fortran-mode-abbrev-table ()) | |
| 215 | (define-abbrev fortran-mode-abbrev-table ";au" "automatic" nil) | |
| 216 | (define-abbrev fortran-mode-abbrev-table ";b" "byte" nil) | |
| b8cbdf43 | 217 | (define-abbrev fortran-mode-abbrev-table ";bd" "block data" nil) |
| 3dd63760 JB |
218 | (define-abbrev fortran-mode-abbrev-table ";ch" "character" nil) |
| 219 | (define-abbrev fortran-mode-abbrev-table ";cl" "close" nil) | |
| 220 | (define-abbrev fortran-mode-abbrev-table ";c" "continue" nil) | |
| 221 | (define-abbrev fortran-mode-abbrev-table ";cm" "common" nil) | |
| 222 | (define-abbrev fortran-mode-abbrev-table ";cx" "complex" nil) | |
| 223 | (define-abbrev fortran-mode-abbrev-table ";df" "define" nil) | |
| 224 | (define-abbrev fortran-mode-abbrev-table ";di" "dimension" nil) | |
| 225 | (define-abbrev fortran-mode-abbrev-table ";do" "double" nil) | |
| 226 | (define-abbrev fortran-mode-abbrev-table ";dc" "double complex" nil) | |
| 227 | (define-abbrev fortran-mode-abbrev-table ";dp" "double precision" nil) | |
| 228 | (define-abbrev fortran-mode-abbrev-table ";dw" "do while" nil) | |
| 229 | (define-abbrev fortran-mode-abbrev-table ";e" "else" nil) | |
| 230 | (define-abbrev fortran-mode-abbrev-table ";ed" "enddo" nil) | |
| 231 | (define-abbrev fortran-mode-abbrev-table ";el" "elseif" nil) | |
| 232 | (define-abbrev fortran-mode-abbrev-table ";en" "endif" nil) | |
| 233 | (define-abbrev fortran-mode-abbrev-table ";eq" "equivalence" nil) | |
| b8cbdf43 | 234 | (define-abbrev fortran-mode-abbrev-table ";ew" "endwhere" nil) |
| 3dd63760 JB |
235 | (define-abbrev fortran-mode-abbrev-table ";ex" "external" nil) |
| 236 | (define-abbrev fortran-mode-abbrev-table ";ey" "entry" nil) | |
| 237 | (define-abbrev fortran-mode-abbrev-table ";f" "format" nil) | |
| 238 | (define-abbrev fortran-mode-abbrev-table ";fa" ".false." nil) | |
| 239 | (define-abbrev fortran-mode-abbrev-table ";fu" "function" nil) | |
| 240 | (define-abbrev fortran-mode-abbrev-table ";g" "goto" nil) | |
| 241 | (define-abbrev fortran-mode-abbrev-table ";im" "implicit" nil) | |
| 242 | (define-abbrev fortran-mode-abbrev-table ";ib" "implicit byte" nil) | |
| 243 | (define-abbrev fortran-mode-abbrev-table ";ic" "implicit complex" nil) | |
| 244 | (define-abbrev fortran-mode-abbrev-table ";ich" "implicit character" nil) | |
| 245 | (define-abbrev fortran-mode-abbrev-table ";ii" "implicit integer" nil) | |
| 246 | (define-abbrev fortran-mode-abbrev-table ";il" "implicit logical" nil) | |
| 247 | (define-abbrev fortran-mode-abbrev-table ";ir" "implicit real" nil) | |
| 248 | (define-abbrev fortran-mode-abbrev-table ";inc" "include" nil) | |
| 249 | (define-abbrev fortran-mode-abbrev-table ";in" "integer" nil) | |
| 250 | (define-abbrev fortran-mode-abbrev-table ";intr" "intrinsic" nil) | |
| 251 | (define-abbrev fortran-mode-abbrev-table ";l" "logical" nil) | |
| 252 | (define-abbrev fortran-mode-abbrev-table ";n" "namelist" nil) | |
| 253 | (define-abbrev fortran-mode-abbrev-table ";o" "open" nil) ; was ;op | |
| 254 | (define-abbrev fortran-mode-abbrev-table ";pa" "parameter" nil) | |
| 255 | (define-abbrev fortran-mode-abbrev-table ";pr" "program" nil) | |
| 256 | (define-abbrev fortran-mode-abbrev-table ";ps" "pause" nil) | |
| 257 | (define-abbrev fortran-mode-abbrev-table ";p" "print" nil) | |
| 258 | (define-abbrev fortran-mode-abbrev-table ";rc" "record" nil) | |
| 259 | (define-abbrev fortran-mode-abbrev-table ";re" "real" nil) | |
| 260 | (define-abbrev fortran-mode-abbrev-table ";r" "read" nil) | |
| 261 | (define-abbrev fortran-mode-abbrev-table ";rt" "return" nil) | |
| 262 | (define-abbrev fortran-mode-abbrev-table ";rw" "rewind" nil) | |
| 263 | (define-abbrev fortran-mode-abbrev-table ";s" "stop" nil) | |
| 264 | (define-abbrev fortran-mode-abbrev-table ";sa" "save" nil) | |
| 265 | (define-abbrev fortran-mode-abbrev-table ";st" "structure" nil) | |
| 266 | (define-abbrev fortran-mode-abbrev-table ";sc" "static" nil) | |
| 267 | (define-abbrev fortran-mode-abbrev-table ";su" "subroutine" nil) | |
| 268 | (define-abbrev fortran-mode-abbrev-table ";tr" ".true." nil) | |
| 269 | (define-abbrev fortran-mode-abbrev-table ";ty" "type" nil) | |
| 270 | (define-abbrev fortran-mode-abbrev-table ";vo" "volatile" nil) | |
| 271 | (define-abbrev fortran-mode-abbrev-table ";w" "write" nil) | |
| b8cbdf43 | 272 | (define-abbrev fortran-mode-abbrev-table ";wh" "where" nil) |
| 3dd63760 JB |
273 | (setq abbrevs-changed ac))) |
| 274 | \f | |
| 275 | ;;;###autoload | |
| 276 | (defun fortran-mode () | |
| b8cbdf43 RS |
277 | "Major mode for editing Fortran code. |
| 278 | \\[fortran-indent-line] indents the current Fortran line correctly. | |
| 279 | DO statements must not share a common CONTINUE. | |
| 3dd63760 | 280 | |
| b8cbdf43 | 281 | Type ;? or ;\\[help-command] to display a list of built-in\ |
| 3dd63760 JB |
282 | abbrevs for Fortran keywords. |
| 283 | ||
| 284 | Key definitions: | |
| 285 | \\{fortran-mode-map} | |
| 286 | ||
| 287 | Variables controlling indentation style and extra features: | |
| 288 | ||
| 289 | comment-start | |
| 290 | Normally nil in Fortran mode. If you want to use comments | |
| 291 | starting with `!', set this to the string \"!\". | |
| 292 | fortran-do-indent | |
| 293 | Extra indentation within do blocks. (default 3) | |
| 294 | fortran-if-indent | |
| 295 | Extra indentation within if blocks. (default 3) | |
| b8cbdf43 RS |
296 | fortran-structure-indent |
| 297 | Extra indentation within structure, union and map blocks. (default 3) | |
| 3dd63760 | 298 | fortran-continuation-indent |
| b8cbdf43 | 299 | Extra indentation applied to continuation statements. (default 5) |
| 23029d77 | 300 | fortran-comment-line-extra-indent |
| b8cbdf43 | 301 | Amount of extra indentation for text within full-line comments. (default 0) |
| 3dd63760 JB |
302 | fortran-comment-indent-style |
| 303 | nil means don't change indentation of text in full-line comments, | |
| 23029d77 JB |
304 | fixed means indent that text at `fortran-comment-line-extra-indent' beyond |
| 305 | the value of `fortran-minimum-statement-indent-fixed' (for fixed | |
| 306 | format continuation style) or `fortran-minimum-statement-indent-tab' | |
| 307 | (for TAB format continuation style). | |
| 308 | relative means indent at `fortran-comment-line-extra-indent' beyond the | |
| 3dd63760 JB |
309 | indentation for a line of code. |
| 310 | (default 'fixed) | |
| 311 | fortran-comment-indent-char | |
| b8cbdf43 | 312 | Single-character string to be inserted instead of space for |
| 3dd63760 | 313 | full-line comment indentation. (default \" \") |
| 23029d77 JB |
314 | fortran-minimum-statement-indent-fixed |
| 315 | Minimum indentation for Fortran statements in fixed format mode. (def.6) | |
| 316 | fortran-minimum-statement-indent-tab | |
| 317 | Minimum indentation for Fortran statements in TAB format mode. (default 9) | |
| 3dd63760 JB |
318 | fortran-line-number-indent |
| 319 | Maximum indentation for line numbers. A line number will get | |
| 320 | less than this much indentation if necessary to avoid reaching | |
| 321 | column 5. (default 1) | |
| 322 | fortran-check-all-num-for-matching-do | |
| b8cbdf43 | 323 | Non-nil causes all numbered lines to be treated as possible \"continue\" |
| 3dd63760 JB |
324 | statements. (default nil) |
| 325 | fortran-blink-matching-if | |
| b8cbdf43 | 326 | From a Fortran ENDIF statement, blink the matching IF statement. |
| 3dd63760 JB |
327 | (default nil) |
| 328 | fortran-continuation-string | |
| 329 | Single-character string to be inserted in column 5 of a continuation | |
| 330 | line. (default \"$\") | |
| 331 | fortran-comment-region | |
| 332 | String inserted by \\[fortran-comment-region] at start of each line in | |
| 333 | region. (default \"c$$$\") | |
| 334 | fortran-electric-line-number | |
| 335 | Non-nil causes line number digits to be moved to the correct column | |
| 336 | as typed. (default t) | |
| b8cbdf43 RS |
337 | fortran-break-before-delimiters |
| 338 | Non-nil causes `fortran-do-auto-fill' breaks lines before delimeters. | |
| 339 | (default t) | |
| 3dd63760 JB |
340 | fortran-startup-message |
| 341 | Set to nil to inhibit message first time Fortran mode is used. | |
| 342 | ||
| b8cbdf43 | 343 | Turning on Fortran mode calls the value of the variable `fortran-mode-hook' |
| 3dd63760 JB |
344 | with no args, if that value is non-nil." |
| 345 | (interactive) | |
| 346 | (kill-all-local-variables) | |
| 347 | (if fortran-startup-message | |
| b8cbdf43 | 348 | (message "Emacs Fortran mode %s. Bugs to %s" |
| 3dd63760 JB |
349 | fortran-mode-version bug-fortran-mode)) |
| 350 | (setq fortran-startup-message nil) | |
| 351 | (setq local-abbrev-table fortran-mode-abbrev-table) | |
| 352 | (set-syntax-table fortran-mode-syntax-table) | |
| b8cbdf43 RS |
353 | (make-local-variable 'fortran-break-before-delimiters) |
| 354 | (setq fortran-break-before-delimiters t) | |
| 3dd63760 JB |
355 | (make-local-variable 'indent-line-function) |
| 356 | (setq indent-line-function 'fortran-indent-line) | |
| 357 | (make-local-variable 'comment-indent-hook) | |
| 358 | (setq comment-indent-hook 'fortran-comment-hook) | |
| 359 | (make-local-variable 'comment-line-start-skip) | |
| 360 | (setq comment-line-start-skip | |
| b8cbdf43 | 361 | "^[Cc*]\\(\\([^ \t\n]\\)\\2\\2*\\)?[ \t]*\\|^#.*") |
| 3dd63760 JB |
362 | (make-local-variable 'comment-line-start) |
| 363 | (setq comment-line-start "c") | |
| 364 | (make-local-variable 'comment-start-skip) | |
| 365 | (setq comment-start-skip "![ \t]*") | |
| 366 | (make-local-variable 'comment-start) | |
| 367 | (setq comment-start nil) | |
| 368 | (make-local-variable 'require-final-newline) | |
| 369 | (setq require-final-newline t) | |
| 370 | (make-local-variable 'abbrev-all-caps) | |
| 371 | (setq abbrev-all-caps t) | |
| 372 | (make-local-variable 'indent-tabs-mode) | |
| 373 | (setq indent-tabs-mode nil) | |
| 23029d77 | 374 | ;;;(setq abbrev-mode t) ; ?? (abbrev-mode 1) instead?? |
| b8cbdf43 | 375 | (setq fill-column 72) ; Already local? |
| 3dd63760 JB |
376 | (use-local-map fortran-mode-map) |
| 377 | (setq mode-name "Fortran") | |
| 378 | (setq major-mode 'fortran-mode) | |
| 23029d77 JB |
379 | ;;;(make-local-variable 'fortran-tab-mode) |
| 380 | (make-local-variable 'fortran-comment-line-extra-indent) | |
| 381 | (make-local-variable 'fortran-minimum-statement-indent-fixed) | |
| 382 | (make-local-variable 'fortran-minimum-statement-indent-tab) | |
| 383 | (make-local-variable 'fortran-column-ruler-fixed) | |
| 384 | (make-local-variable 'fortran-column-ruler-tab) | |
| 3dd63760 | 385 | (make-local-variable 'fortran-tab-mode-string) |
| 23029d77 JB |
386 | (setq fortran-tab-mode-string " TAB-format") |
| 387 | (setq indent-tabs-mode (fortran-analyze-file-format)) | |
| 3dd63760 JB |
388 | (run-hooks 'fortran-mode-hook)) |
| 389 | \f | |
| 390 | (defun fortran-comment-hook () | |
| 391 | (save-excursion | |
| 392 | (skip-chars-backward " \t") | |
| 393 | (max (+ 1 (current-column)) | |
| 394 | comment-column))) | |
| 395 | ||
| 396 | (defun fortran-indent-comment () | |
| 397 | "Align or create comment on current line. | |
| 398 | Existing comments of all types are recognized and aligned. | |
| 399 | If the line has no comment, a side-by-side comment is inserted and aligned | |
| 400 | if the value of comment-start is not nil. | |
| 401 | Otherwise, a separate-line comment is inserted, on this line | |
| 402 | or on a new line inserted before this line if this line is not blank." | |
| 403 | (interactive) | |
| 404 | (beginning-of-line) | |
| 405 | ;; Recognize existing comments of either kind. | |
| 406 | (cond ((looking-at comment-line-start-skip) | |
| 407 | (fortran-indent-line)) | |
| 23029d77 | 408 | ((fortran-find-comment-start-skip) ; catches any inline comment and |
| b8cbdf43 RS |
409 | ; leaves point after comment-start-skip |
| 410 | (if comment-start-skip | |
| 411 | (progn (goto-char (match-beginning 0)) | |
| 412 | (if (not (= (current-column) (fortran-comment-hook))) | |
| 413 | (progn (delete-horizontal-space) | |
| 414 | (indent-to (fortran-comment-hook))))) | |
| 415 | (end-of-line))) ; otherwise goto end of line or sth else? | |
| 3dd63760 JB |
416 | ;; No existing comment. |
| 417 | ;; If side-by-side comments are defined, insert one, | |
| 418 | ;; unless line is now blank. | |
| 419 | ((and comment-start (not (looking-at "^[ \t]*$"))) | |
| 420 | (end-of-line) | |
| 421 | (delete-horizontal-space) | |
| 422 | (indent-to (fortran-comment-hook)) | |
| 423 | (insert comment-start)) | |
| 424 | ;; Else insert separate-line comment, making a new line if nec. | |
| 425 | (t | |
| 426 | (if (looking-at "^[ \t]*$") | |
| 427 | (delete-horizontal-space) | |
| 428 | (beginning-of-line) | |
| 429 | (insert "\n") | |
| 430 | (forward-char -1)) | |
| 431 | (insert comment-line-start) | |
| 432 | (insert-char (if (stringp fortran-comment-indent-char) | |
| 433 | (aref fortran-comment-indent-char 0) | |
| b8cbdf43 | 434 | fortran-comment-indent-char) |
| 3dd63760 JB |
435 | (- (calculate-fortran-indent) (current-column)))))) |
| 436 | ||
| 437 | (defun fortran-comment-region (beg-region end-region arg) | |
| 438 | "Comments every line in the region. | |
| 439 | Puts fortran-comment-region at the beginning of every line in the region. | |
| 440 | BEG-REGION and END-REGION are args which specify the region boundaries. | |
| 441 | With non-nil ARG, uncomments the region." | |
| 442 | (interactive "*r\nP") | |
| 443 | (let ((end-region-mark (make-marker)) (save-point (point-marker))) | |
| 444 | (set-marker end-region-mark end-region) | |
| 445 | (goto-char beg-region) | |
| 446 | (beginning-of-line) | |
| 447 | (if (not arg) ;comment the region | |
| 448 | (progn (insert fortran-comment-region) | |
| 449 | (while (and (= (forward-line 1) 0) | |
| 450 | (< (point) end-region-mark)) | |
| 451 | (insert fortran-comment-region))) | |
| 452 | (let ((com (regexp-quote fortran-comment-region))) ;uncomment the region | |
| 453 | (if (looking-at com) | |
| 454 | (delete-region (point) (match-end 0))) | |
| 455 | (while (and (= (forward-line 1) 0) | |
| 456 | (< (point) end-region-mark)) | |
| 457 | (if (looking-at com) | |
| 458 | (delete-region (point) (match-end 0)))))) | |
| 459 | (goto-char save-point) | |
| 460 | (set-marker end-region-mark nil) | |
| 461 | (set-marker save-point nil))) | |
| 462 | \f | |
| 463 | (defun fortran-abbrev-start () | |
| b8cbdf43 | 464 | "Typing ;\\[help-command] or ;? lists all the Fortran abbrevs. |
| 3dd63760 JB |
465 | Any other key combination is executed normally." |
| 466 | (interactive) | |
| 467 | (let (c) | |
| 468 | (insert last-command-char) | |
| 469 | (if (or (= (setq c (read-char)) ??) ;insert char if not equal to `?' | |
| 470 | (= c help-char)) | |
| 471 | (fortran-abbrev-help) | |
| dbc4e1c1 | 472 | (setq unread-command-events (list c))))) |
| 3dd63760 JB |
473 | |
| 474 | (defun fortran-abbrev-help () | |
| 475 | "List the currently defined abbrevs in Fortran mode." | |
| 476 | (interactive) | |
| 477 | (message "Listing abbrev table...") | |
| 478 | (require 'abbrevlist) | |
| e80f2147 | 479 | (display-buffer (fortran-prepare-abbrev-list-buffer)) |
| 3dd63760 JB |
480 | (message "Listing abbrev table...done")) |
| 481 | ||
| e80f2147 RS |
482 | (defun fortran-prepare-abbrev-list-buffer () |
| 483 | (save-excursion | |
| 484 | (set-buffer (get-buffer-create "*Abbrevs*")) | |
| 485 | (erase-buffer) | |
| b8cbdf43 | 486 | (insert-abbrev-table-description fortran-mode-abbrev-table t) |
| e80f2147 RS |
487 | (goto-char (point-min)) |
| 488 | (set-buffer-modified-p nil) | |
| 489 | (edit-abbrevs-mode)) | |
| 490 | (get-buffer-create "*Abbrevs*")) | |
| 491 | ||
| 3dd63760 JB |
492 | (defun fortran-column-ruler () |
| 493 | "Inserts a column ruler momentarily above current line, till next keystroke. | |
| fe668515 | 494 | The ruler is defined by the value of `fortran-column-ruler'. |
| 3dd63760 JB |
495 | The key typed is executed unless it is SPC." |
| 496 | (interactive) | |
| 497 | (momentary-string-display | |
| 23029d77 JB |
498 | (if indent-tabs-mode |
| 499 | fortran-column-ruler-tab | |
| 500 | fortran-column-ruler-fixed) | |
| 501 | (save-excursion | |
| 502 | (beginning-of-line) | |
| 503 | (if (eq (window-start (selected-window)) | |
| 504 | (window-point (selected-window))) | |
| 505 | (progn (forward-line) (point)) | |
| 506 | (point))) | |
| 3dd63760 JB |
507 | nil "Type SPC or any command to erase ruler.")) |
| 508 | ||
| 509 | (defun fortran-window-create () | |
| 510 | "Makes the window 72 columns wide. | |
| fe668515 | 511 | See also `fortran-window-create-momentarily'." |
| 3dd63760 JB |
512 | (interactive) |
| 513 | (condition-case error | |
| 514 | (progn | |
| 515 | (let ((window-min-width 2)) | |
| 23029d77 JB |
516 | (if (< (window-width) (frame-width)) |
| 517 | (enlarge-window-horizontally (- (frame-width) | |
| 3dd63760 JB |
518 | (window-width) 1))) |
| 519 | (split-window-horizontally 73) | |
| 520 | (other-window 1) | |
| 521 | (switch-to-buffer " fortran-window-extra" t) | |
| 522 | (select-window (previous-window)))) | |
| b8cbdf43 | 523 | (error (message "No room for Fortran window.") |
| 3dd63760 JB |
524 | 'error))) |
| 525 | ||
| 526 | (defun fortran-window-create-momentarily (&optional arg) | |
| 527 | "Momentarily makes the window 72 columns wide. | |
| 528 | Optional ARG non-nil and non-unity disables the momentary feature. | |
| fe668515 | 529 | See also `fortran-window-create'." |
| 3dd63760 JB |
530 | (interactive "p") |
| 531 | (if (or (not arg) | |
| 532 | (= arg 1)) | |
| 533 | (save-window-excursion | |
| 534 | (if (not (equal (fortran-window-create) 'error)) | |
| 535 | (progn (message "Type SPC to continue editing.") | |
| 536 | (let ((char (read-char))) | |
| 537 | (or (equal char (string-to-char " ")) | |
| dbc4e1c1 | 538 | (setq unread-command-events (list char))))))) |
| 3dd63760 JB |
539 | (fortran-window-create))) |
| 540 | ||
| 541 | (defun fortran-split-line () | |
| 542 | "Break line at point and insert continuation marker and alignment." | |
| 543 | (interactive) | |
| 544 | (delete-horizontal-space) | |
| 545 | (if (save-excursion (beginning-of-line) (looking-at comment-line-start-skip)) | |
| 546 | (insert "\n" comment-line-start " ") | |
| 23029d77 | 547 | (if indent-tabs-mode |
| 3dd63760 JB |
548 | (progn |
| 549 | (insert "\n\t") | |
| 550 | (insert-char (fortran-numerical-continuation-char) 1)) | |
| b8cbdf43 RS |
551 | (insert "\n " fortran-continuation-string)));Space after \n important |
| 552 | (fortran-indent-line)) ;when the cont string is C, c or *. | |
| 3dd63760 JB |
553 | |
| 554 | (defun fortran-numerical-continuation-char () | |
| 555 | "Return a digit for tab-digit style of continution lines. | |
| 556 | If, previous line is a tab-digit continuation line, returns that digit | |
| 557 | plus one. Otherwise return 1. Zero not allowed." | |
| 558 | (save-excursion | |
| 559 | (forward-line -1) | |
| 560 | (if (looking-at "\t[1-9]") | |
| 561 | (+ ?1 (% (- (char-after (+ (point) 1)) ?0) 9)) | |
| 562 | ?1))) | |
| 563 | ||
| 564 | (defun delete-horizontal-regexp (chars) | |
| 565 | "Delete all characters in CHARS around point. | |
| 566 | CHARS is like the inside of a [...] in a regular expression | |
| 567 | except that ] is never special and \ quotes ^, - or \." | |
| 568 | (interactive "*s") | |
| 569 | (skip-chars-backward chars) | |
| 570 | (delete-region (point) (progn (skip-chars-forward chars) (point)))) | |
| 571 | ||
| 572 | (defun fortran-electric-line-number (arg) | |
| 573 | "Self insert, but if part of a Fortran line number indent it automatically. | |
| 574 | Auto-indent does not happen if a numeric arg is used." | |
| 3dd63760 JB |
575 | (interactive "P") |
| 576 | (if (or arg (not fortran-electric-line-number)) | |
| 577 | (if arg | |
| b8cbdf43 | 578 | (self-insert-command (prefix-numeric-value arg)) |
| 3dd63760 JB |
579 | (self-insert-command 1)) |
| 580 | (if (or (and (= 5 (current-column)) | |
| 581 | (save-excursion | |
| 582 | (beginning-of-line) | |
| 583 | (looking-at " ")));In col 5 with only spaces to left. | |
| 23029d77 JB |
584 | (and (= (if indent-tabs-mode |
| 585 | fortran-minimum-statement-indent-tab | |
| 586 | fortran-minimum-statement-indent-fixed) (current-column)) | |
| 3dd63760 JB |
587 | (save-excursion |
| 588 | (beginning-of-line) | |
| 589 | (looking-at "\t"));In col 8 with a single tab to the left. | |
| 590 | (not (or (eq last-command 'fortran-indent-line) | |
| 591 | (eq last-command | |
| 592 | 'fortran-reindent-then-newline-and-indent)))) | |
| 593 | (save-excursion | |
| 594 | (re-search-backward "[^ \t0-9]" | |
| 595 | (save-excursion | |
| 596 | (beginning-of-line) | |
| 597 | (point)) | |
| 598 | t)) ;not a line number | |
| 599 | (looking-at "[0-9]") ;within a line number | |
| 600 | ) | |
| b8cbdf43 | 601 | (self-insert-command (prefix-numeric-value arg)) |
| 3dd63760 JB |
602 | (skip-chars-backward " \t") |
| 603 | (insert last-command-char) | |
| 604 | (fortran-indent-line)))) | |
| 605 | \f | |
| 606 | (defun beginning-of-fortran-subprogram () | |
| b8cbdf43 | 607 | "Moves point to the beginning of the current Fortran subprogram." |
| 3dd63760 JB |
608 | (interactive) |
| 609 | (let ((case-fold-search t)) | |
| 610 | (beginning-of-line -1) | |
| 611 | (re-search-backward "^[ \t0-9]*end\\b[ \t]*[^ \t=(a-z]" nil 'move) | |
| 612 | (if (looking-at "^[ \t0-9]*end\\b[ \t]*[^ \t=(a-z]") | |
| 613 | (forward-line 1)))) | |
| 614 | ||
| 615 | (defun end-of-fortran-subprogram () | |
| b8cbdf43 | 616 | "Moves point to the end of the current Fortran subprogram." |
| 3dd63760 JB |
617 | (interactive) |
| 618 | (let ((case-fold-search t)) | |
| 619 | (beginning-of-line 2) | |
| 620 | (re-search-forward "^[ \t0-9]*end\\b[ \t]*[^ \t=(a-z]" nil 'move) | |
| 621 | (goto-char (match-beginning 0)) | |
| 622 | (forward-line 1))) | |
| 623 | ||
| 624 | (defun mark-fortran-subprogram () | |
| b8cbdf43 | 625 | "Put mark at end of Fortran subprogram, point at beginning. |
| 3dd63760 JB |
626 | The marks are pushed." |
| 627 | (interactive) | |
| 628 | (end-of-fortran-subprogram) | |
| 629 | (push-mark (point)) | |
| 630 | (beginning-of-fortran-subprogram)) | |
| b8cbdf43 | 631 | |
| 3dd63760 | 632 | (defun fortran-previous-statement () |
| b8cbdf43 RS |
633 | "Moves point to beginning of the previous Fortran statement. |
| 634 | Returns `first-statement' if that statement is the first | |
| 3dd63760 JB |
635 | non-comment Fortran statement in the file, and nil otherwise." |
| 636 | (interactive) | |
| 637 | (let (not-first-statement continue-test) | |
| 638 | (beginning-of-line) | |
| 639 | (setq continue-test | |
| b8cbdf43 RS |
640 | (and |
| 641 | (not (looking-at comment-line-start-skip)) | |
| 642 | (or (looking-at | |
| 3dd63760 | 643 | (concat "[ \t]*" (regexp-quote fortran-continuation-string))) |
| b8cbdf43 RS |
644 | (or (looking-at " [^ 0\n]") |
| 645 | (looking-at "\t[1-9]"))))) | |
| 3dd63760 JB |
646 | (while (and (setq not-first-statement (= (forward-line -1) 0)) |
| 647 | (or (looking-at comment-line-start-skip) | |
| 648 | (looking-at "[ \t]*$") | |
| 649 | (looking-at " [^ 0\n]") | |
| 650 | (looking-at "\t[1-9]") | |
| 651 | (looking-at (concat "[ \t]*" comment-start-skip))))) | |
| 652 | (cond ((and continue-test | |
| 653 | (not not-first-statement)) | |
| 654 | (message "Incomplete continuation statement.")) | |
| 655 | (continue-test | |
| 656 | (fortran-previous-statement)) | |
| 657 | ((not not-first-statement) | |
| 658 | 'first-statement)))) | |
| 659 | ||
| 660 | (defun fortran-next-statement () | |
| b8cbdf43 | 661 | "Moves point to beginning of the next Fortran statement. |
| 3dd63760 JB |
662 | Returns `last-statement' if that statement is the last |
| 663 | non-comment Fortran statement in the file, and nil otherwise." | |
| 664 | (interactive) | |
| 665 | (let (not-last-statement) | |
| 666 | (beginning-of-line) | |
| b8cbdf43 RS |
667 | (while (and (setq not-last-statement |
| 668 | (and (= (forward-line 1) 0) | |
| 669 | (not (eobp)))) | |
| 3dd63760 JB |
670 | (or (looking-at comment-line-start-skip) |
| 671 | (looking-at "[ \t]*$") | |
| 672 | (looking-at " [^ 0\n]") | |
| 673 | (looking-at "\t[1-9]") | |
| 674 | (looking-at (concat "[ \t]*" comment-start-skip))))) | |
| 675 | (if (not not-last-statement) | |
| 676 | 'last-statement))) | |
| 677 | \f | |
| 678 | (defun fortran-blink-matching-if () | |
| b8cbdf43 | 679 | "From a Fortran ENDIF statement, blink the matching IF statement." |
| 3dd63760 JB |
680 | (let ((count 1) (top-of-window (window-start)) matching-if |
| 681 | (endif-point (point)) message) | |
| 682 | (if (save-excursion (beginning-of-line) | |
| 683 | (skip-chars-forward " \t0-9") | |
| 684 | (looking-at "end[ \t]*if\\b")) | |
| 685 | (progn | |
| 686 | (save-excursion | |
| 687 | (while (and (not (= count 0)) | |
| 688 | (not (eq (fortran-previous-statement) | |
| 689 | 'first-statement)) | |
| 690 | (not (looking-at | |
| 691 | "^[ \t0-9]*end\\b[ \t]*[^ \t=(a-z]"))) | |
| 692 | ; Keep local to subprogram | |
| 693 | (skip-chars-forward " \t0-9") | |
| 694 | (cond ((looking-at "if[ \t]*(") | |
| b8cbdf43 RS |
695 | (save-excursion |
| 696 | (if (or | |
| 697 | (looking-at ".*)[ \t]*then\\b[ \t]*[^ \t(=a-z0-9]") | |
| 698 | (let (then-test);multi-line if-then | |
| 699 | (while | |
| 700 | (and (= (forward-line 1) 0) | |
| 3dd63760 | 701 | ;search forward for then |
| b8cbdf43 RS |
702 | (or (looking-at " [^ 0\n]") |
| 703 | (looking-at "\t[1-9]")) | |
| 704 | (not | |
| 705 | (setq | |
| 706 | then-test | |
| 707 | (looking-at | |
| 708 | ".*then\\b[ \t]*[^ \t(=a-z0-9]"))))) | |
| 709 | then-test)) | |
| 710 | (setq count (- count 1))))) | |
| 3dd63760 JB |
711 | ((looking-at "end[ \t]*if\\b") |
| 712 | (setq count (+ count 1))))) | |
| 713 | (if (not (= count 0)) | |
| 714 | (setq message "No matching if.") | |
| 715 | (if (< (point) top-of-window) | |
| 716 | (setq message (concat "Matches " (buffer-substring | |
| 717 | (progn (beginning-of-line) | |
| 718 | (point)) | |
| 719 | (progn (end-of-line) | |
| 720 | (point))))) | |
| 721 | (setq matching-if (point))))) | |
| 722 | (if message | |
| b8cbdf43 | 723 | (message "%s" message) |
| 3dd63760 JB |
724 | (goto-char matching-if) |
| 725 | (sit-for 1) | |
| 726 | (goto-char endif-point)))))) | |
| 727 | \f | |
| 728 | (defun fortran-indent-line () | |
| b8cbdf43 | 729 | "Indents current Fortran line based on its contents and on previous lines." |
| 3dd63760 JB |
730 | (interactive) |
| 731 | (let ((cfi (calculate-fortran-indent))) | |
| 732 | (save-excursion | |
| 733 | (beginning-of-line) | |
| 734 | (if (or (not (= cfi (fortran-current-line-indentation))) | |
| 735 | (and (re-search-forward "^[ \t]*[0-9]+" (+ (point) 4) t) | |
| 736 | (not (fortran-line-number-indented-correctly-p)))) | |
| 737 | (fortran-indent-to-column cfi) | |
| 738 | (beginning-of-line) | |
| 739 | (if (and (not (looking-at comment-line-start-skip)) | |
| 23029d77 | 740 | (fortran-find-comment-start-skip)) |
| 3dd63760 JB |
741 | (fortran-indent-comment)))) |
| 742 | ;; Never leave point in left margin. | |
| 743 | (if (< (current-column) cfi) | |
| 744 | (move-to-column cfi)) | |
| 23029d77 | 745 | (if (and auto-fill-function |
| b8cbdf43 RS |
746 | (> (save-excursion (end-of-line) (current-column)) fill-column)) |
| 747 | (save-excursion | |
| 748 | (end-of-line) | |
| 749 | (fortran-do-auto-fill))) | |
| 3dd63760 JB |
750 | (if fortran-blink-matching-if |
| 751 | (fortran-blink-matching-if)))) | |
| 752 | ||
| 753 | (defun fortran-reindent-then-newline-and-indent () | |
| b8cbdf43 RS |
754 | "Reindent the current Fortran line, insert a newline and indent the newline. |
| 755 | An abbrev before point is expanded if `abbrev-mode' is non-nil." | |
| 3dd63760 JB |
756 | (interactive) |
| 757 | (if abbrev-mode (expand-abbrev)) | |
| 758 | (save-excursion | |
| 759 | (beginning-of-line) | |
| 760 | (skip-chars-forward " \t") | |
| 761 | (if (or (looking-at "[0-9]") ;Reindent only where it is most | |
| 762 | (looking-at "end") ;likely to be necessary | |
| 763 | (looking-at "else") | |
| 764 | (looking-at (regexp-quote fortran-continuation-string))) | |
| 765 | (fortran-indent-line))) | |
| b8cbdf43 | 766 | (newline) |
| 3dd63760 | 767 | (fortran-indent-line)) |
| b8cbdf43 | 768 | |
| 3dd63760 JB |
769 | (defun fortran-indent-subprogram () |
| 770 | "Properly indents the Fortran subprogram which contains point." | |
| 771 | (interactive) | |
| 772 | (save-excursion | |
| 773 | (mark-fortran-subprogram) | |
| 774 | (message "Indenting subprogram...") | |
| 775 | (indent-region (point) (mark) nil)) | |
| 776 | (message "Indenting subprogram...done.")) | |
| 777 | ||
| 778 | (defun calculate-fortran-indent () | |
| b8cbdf43 | 779 | "Calculates the Fortran indent column based on previous lines." |
| 3dd63760 JB |
780 | (let (icol first-statement (case-fold-search t) |
| 781 | (fortran-minimum-statement-indent | |
| 23029d77 JB |
782 | (if indent-tabs-mode |
| 783 | fortran-minimum-statement-indent-tab | |
| 784 | fortran-minimum-statement-indent-fixed))) | |
| 3dd63760 JB |
785 | (save-excursion |
| 786 | (setq first-statement (fortran-previous-statement)) | |
| 787 | (if first-statement | |
| 788 | (setq icol fortran-minimum-statement-indent) | |
| 789 | (progn | |
| 790 | (if (= (point) (point-min)) | |
| 791 | (setq icol fortran-minimum-statement-indent) | |
| 792 | (setq icol (fortran-current-line-indentation))) | |
| 793 | (skip-chars-forward " \t0-9") | |
| 794 | (cond ((looking-at "if[ \t]*(") | |
| b8cbdf43 | 795 | (if (or (looking-at ".*)[ \t]*then\\b[ \t]*[^ \t_$(=a-z0-9]") |
| 3dd63760 JB |
796 | (let (then-test) ;multi-line if-then |
| 797 | (while (and (= (forward-line 1) 0) | |
| b8cbdf43 | 798 | ;;search forward for then |
| 3dd63760 JB |
799 | (or (looking-at " [^ 0\n]") |
| 800 | (looking-at "\t[1-9]")) | |
| 801 | (not (setq then-test (looking-at | |
| b8cbdf43 RS |
802 | ".*then\\b[ \t]\ |
| 803 | *[^ \t_$(=a-z0-9]"))))) | |
| 3dd63760 JB |
804 | then-test)) |
| 805 | (setq icol (+ icol fortran-if-indent)))) | |
| 806 | ((looking-at "\\(else\\|elseif\\)\\b") | |
| 807 | (setq icol (+ icol fortran-if-indent))) | |
| b8cbdf43 RS |
808 | ((looking-at "\\(otherwise\\|else[ \t]*where\\)\\b") |
| 809 | (setq icol (+ icol fortran-if-indent))) | |
| 810 | ((looking-at "where.*(.*)[ \t]*\n") | |
| 811 | (setq icol (+ icol fortran-if-indent))) | |
| 3dd63760 JB |
812 | ((looking-at "do\\b") |
| 813 | (setq icol (+ icol fortran-do-indent))) | |
| b8cbdf43 RS |
814 | ((looking-at |
| 815 | "\\(structure\\|union\\|map\\)\\b[ \t]*[^ \t=(a-z]") | |
| 816 | (setq icol (+ icol fortran-structure-indent))) | |
| 3dd63760 | 817 | ((looking-at "end\\b[ \t]*[^ \t=(a-z]") |
| b8cbdf43 | 818 | ;; Previous END resets indent to minimum |
| 3dd63760 JB |
819 | (setq icol fortran-minimum-statement-indent)))))) |
| 820 | (save-excursion | |
| 821 | (beginning-of-line) | |
| 822 | (cond ((looking-at "[ \t]*$")) | |
| 823 | ((looking-at comment-line-start-skip) | |
| 3dd63760 | 824 | (cond ((eq fortran-comment-indent-style 'relative) |
| 23029d77 | 825 | (setq icol (+ icol fortran-comment-line-extra-indent))) |
| 3dd63760 | 826 | ((eq fortran-comment-indent-style 'fixed) |
| b8cbdf43 | 827 | (setq icol (+ fortran-minimum-statement-indent |
| 23029d77 | 828 | fortran-comment-line-extra-indent)))) |
| b8cbdf43 | 829 | (setq fortran-minimum-statement-indent 0)) |
| 3dd63760 | 830 | ((or (looking-at (concat "[ \t]*" |
| b8cbdf43 RS |
831 | (regexp-quote |
| 832 | fortran-continuation-string))) | |
| 3dd63760 JB |
833 | (looking-at " [^ 0\n]") |
| 834 | (looking-at "\t[1-9]")) | |
| 835 | (setq icol (+ icol fortran-continuation-indent))) | |
| 836 | (first-statement) | |
| 837 | ((and fortran-check-all-num-for-matching-do | |
| 838 | (looking-at "[ \t]*[0-9]+") | |
| 839 | (fortran-check-for-matching-do)) | |
| 840 | (setq icol (- icol fortran-do-indent))) | |
| 841 | (t | |
| 842 | (skip-chars-forward " \t0-9") | |
| 843 | (cond ((looking-at "end[ \t]*if\\b") | |
| 844 | (setq icol (- icol fortran-if-indent))) | |
| 845 | ((looking-at "\\(else\\|elseif\\)\\b") | |
| 846 | (setq icol (- icol fortran-if-indent))) | |
| b8cbdf43 RS |
847 | ((looking-at "\\(otherwise\\|else[ \t]*where\\)\\b") |
| 848 | (setq icol (- icol fortran-if-indent))) | |
| 849 | ((looking-at "end[ \t]*where\\b") | |
| 850 | (setq icol (- icol fortran-if-indent))) | |
| 3dd63760 JB |
851 | ((and (looking-at "continue\\b") |
| 852 | (fortran-check-for-matching-do)) | |
| 853 | (setq icol (- icol fortran-do-indent))) | |
| 854 | ((looking-at "end[ \t]*do\\b") | |
| 855 | (setq icol (- icol fortran-do-indent))) | |
| b8cbdf43 RS |
856 | ((looking-at |
| 857 | "end[ \t]*\ | |
| 858 | \\(structure\\|union\\|map\\)\\b[ \t]*[^ \t=(a-z]") | |
| 859 | (setq icol (- icol fortran-structure-indent))) | |
| 3dd63760 JB |
860 | ((and (looking-at "end\\b[ \t]*[^ \t=(a-z]") |
| 861 | (not (= icol fortran-minimum-statement-indent))) | |
| 862 | (message "Warning: `end' not in column %d. Probably\ | |
| 863 | an unclosed block." fortran-minimum-statement-indent)))))) | |
| 864 | (max fortran-minimum-statement-indent icol))) | |
| 865 | \f | |
| 866 | (defun fortran-current-line-indentation () | |
| 867 | "Indentation of current line, ignoring Fortran line number or continuation. | |
| 868 | This is the column position of the first non-whitespace character | |
| 869 | aside from the line number and/or column 5/8 line-continuation character. | |
| 870 | For comment lines, returns indentation of the first | |
| 871 | non-indentation text within the comment." | |
| 872 | (save-excursion | |
| 873 | (beginning-of-line) | |
| 874 | (cond ((looking-at comment-line-start-skip) | |
| 875 | (goto-char (match-end 0)) | |
| 876 | (skip-chars-forward | |
| b8cbdf43 RS |
877 | (if (stringp fortran-comment-indent-char) |
| 878 | fortran-comment-indent-char | |
| 879 | (char-to-string fortran-comment-indent-char)))) | |
| 3dd63760 | 880 | ((or (looking-at " [^ 0\n]") |
| b8cbdf43 | 881 | (looking-at "\t[1-9]")) |
| 3dd63760 JB |
882 | (goto-char (match-end 0))) |
| 883 | (t | |
| 884 | ;; Move past line number. | |
| b8cbdf43 RS |
885 | (skip-chars-forward "[ \t0-9]");From Uli |
| 886 | )) | |
| 3dd63760 JB |
887 | ;; Move past whitespace. |
| 888 | (skip-chars-forward " \t") | |
| 889 | (current-column))) | |
| 890 | ||
| 891 | (defun fortran-indent-to-column (col) | |
| 892 | "Indents current line with spaces to column COL. | |
| 893 | notes: 1) A non-zero/non-blank character in column 5 indicates a continuation | |
| 894 | line, and this continuation character is retained on indentation; | |
| b8cbdf43 RS |
895 | 2) If `fortran-continuation-string' is the first non-whitespace |
| 896 | character, this is a continuation line; | |
| 3dd63760 JB |
897 | 3) A non-continuation line which has a number as the first |
| 898 | non-whitespace character is a numbered line. | |
| b8cbdf43 | 899 | 4) A TAB followed by a digit indicates a continuation line." |
| 3dd63760 JB |
900 | (save-excursion |
| 901 | (beginning-of-line) | |
| 902 | (if (looking-at comment-line-start-skip) | |
| 903 | (if fortran-comment-indent-style | |
| 904 | (let ((char (if (stringp fortran-comment-indent-char) | |
| 905 | (aref fortran-comment-indent-char 0) | |
| b8cbdf43 | 906 | fortran-comment-indent-char))) |
| 3dd63760 JB |
907 | (goto-char (match-end 0)) |
| 908 | (delete-horizontal-regexp (concat " \t" (char-to-string char))) | |
| 909 | (insert-char char (- col (current-column))))) | |
| 910 | (if (looking-at "\t[1-9]") | |
| 23029d77 | 911 | (if indent-tabs-mode |
| 3dd63760 JB |
912 | (goto-char (match-end 0)) |
| 913 | (delete-char 2) | |
| 914 | (insert " ") | |
| 915 | (insert fortran-continuation-string)) | |
| 916 | (if (looking-at " [^ 0\n]") | |
| 23029d77 | 917 | (if indent-tabs-mode |
| 3dd63760 JB |
918 | (progn (delete-char 6) |
| 919 | (insert "\t") | |
| 920 | (insert-char (fortran-numerical-continuation-char) 1)) | |
| 921 | (forward-char 6)) | |
| 922 | (delete-horizontal-space) | |
| b8cbdf43 RS |
923 | ;; Put line number in columns 0-4 |
| 924 | ;; or put continuation character in column 5. | |
| 3dd63760 JB |
925 | (cond ((eobp)) |
| 926 | ((looking-at (regexp-quote fortran-continuation-string)) | |
| 23029d77 | 927 | (if indent-tabs-mode |
| 3dd63760 | 928 | (progn |
| 23029d77 JB |
929 | (indent-to |
| 930 | (if indent-tabs-mode | |
| 931 | fortran-minimum-statement-indent-tab | |
| 932 | fortran-minimum-statement-indent-fixed)) | |
| 3dd63760 JB |
933 | (delete-char 1) |
| 934 | (insert-char (fortran-numerical-continuation-char) 1)) | |
| b8cbdf43 RS |
935 | (indent-to 5) |
| 936 | (forward-char 1))) | |
| 3dd63760 JB |
937 | ((looking-at "[0-9]+") |
| 938 | (let ((extra-space (- 5 (- (match-end 0) (point))))) | |
| 939 | (if (< extra-space 0) | |
| 940 | (message "Warning: line number exceeds 5-digit limit.") | |
| 941 | (indent-to (min fortran-line-number-indent extra-space)))) | |
| 942 | (skip-chars-forward "0-9"))))) | |
| 943 | ;; Point is now after any continuation character or line number. | |
| 944 | ;; Put body of statement where specified. | |
| 945 | (delete-horizontal-space) | |
| 946 | (indent-to col) | |
| 947 | ;; Indent any comment following code on the same line. | |
| 948 | (if (and comment-start-skip | |
| 23029d77 | 949 | (fortran-find-comment-start-skip)) |
| 3dd63760 JB |
950 | (progn (goto-char (match-beginning 0)) |
| 951 | (if (not (= (current-column) (fortran-comment-hook))) | |
| 952 | (progn (delete-horizontal-space) | |
| 953 | (indent-to (fortran-comment-hook))))))))) | |
| 954 | ||
| 955 | (defun fortran-line-number-indented-correctly-p () | |
| 956 | "Return t if current line's line number is correctly indented. | |
| 957 | Do not call if there is no line number." | |
| 958 | (save-excursion | |
| 959 | (beginning-of-line) | |
| 960 | (skip-chars-forward " \t") | |
| 961 | (and (<= (current-column) fortran-line-number-indent) | |
| 962 | (or (= (current-column) fortran-line-number-indent) | |
| 963 | (progn (skip-chars-forward "0-9") | |
| 964 | (= (current-column) 5)))))) | |
| 965 | ||
| 966 | (defun fortran-check-for-matching-do () | |
| b8cbdf43 | 967 | "When called from a numbered statement, returns t if matching DO is found. |
| 3dd63760 JB |
968 | Otherwise return a nil." |
| 969 | (let (charnum | |
| 970 | (case-fold-search t)) | |
| 971 | (save-excursion | |
| 972 | (beginning-of-line) | |
| 973 | (if (looking-at "[ \t]*[0-9]+") | |
| 974 | (progn | |
| 975 | (skip-chars-forward " \t") | |
| 976 | (skip-chars-forward "0") ;skip past leading zeros | |
| 977 | (setq charnum (buffer-substring (point) | |
| 978 | (progn (skip-chars-forward "0-9") | |
| 979 | (point)))) | |
| 980 | (beginning-of-line) | |
| 981 | (and (re-search-backward | |
| 982 | (concat | |
| b8cbdf43 RS |
983 | "\\(^[ \t0-9]*end\\b[ \t]*[^ \t=(a-z]\\)\\|\\(^[ \t0-9]*do\ |
| 984 | [ \t]*0*" | |
| 985 | charnum "\\b\\)\\|\\(^[ \t]*0*" charnum "\\b\\)") | |
| 3dd63760 JB |
986 | nil t) |
| 987 | (looking-at (concat "^[ \t0-9]*do[ \t]*0*" charnum)))))))) | |
| 988 | ||
| 23029d77 | 989 | (defun fortran-find-comment-start-skip () |
| b8cbdf43 RS |
990 | "Move to past `comment-start-skip' found on current line. |
| 991 | Return t if `comment-start-skip' found, nil if not." | |
| 992 | ;;; In order to move point only if comment-start-skip is found, | |
| 993 | ;;; this one uses a lot of save-excursions. Note that re-search-forward | |
| 994 | ;;; moves point even if comment-start-skip is inside a string-constant. | |
| 995 | ;;; Some code expects certain values for match-beginning and end | |
| 996 | (interactive) | |
| 997 | (let ((save-match-beginning) (save-match-end)) | |
| 998 | (if (save-excursion | |
| 999 | (re-search-forward comment-start-skip | |
| 1000 | (save-excursion (end-of-line) (point)) t)) | |
| 1001 | (progn | |
| 1002 | (setq save-match-beginning (match-beginning 0)) | |
| 1003 | (setq save-match-end (match-end 0)) | |
| 23029d77 | 1004 | (if (fortran-is-in-string-p (match-beginning 0)) |
| b8cbdf43 RS |
1005 | (progn |
| 1006 | (save-excursion | |
| 1007 | (goto-char save-match-end) | |
| 23029d77 | 1008 | (fortran-find-comment-start-skip)) ; recurse for rest of line |
| b8cbdf43 RS |
1009 | ) |
| 1010 | (goto-char save-match-beginning) | |
| 1011 | (re-search-forward comment-start-skip | |
| 1012 | (save-excursion (end-of-line) (point)) t) | |
| 1013 | (goto-char (match-end 0)) | |
| 1014 | t)) | |
| 1015 | nil))) | |
| 1016 | ||
| 23029d77 | 1017 | (defun fortran-is-in-string-p (pos) |
| b8cbdf43 RS |
1018 | "Return t if POS (a buffer position) is inside a standard Fortran string. |
| 1019 | Fortran strings are delimeted by apostrophes (\'). Quote-Escape-sequences | |
| 1020 | (\\'), strings delimited by \" and detection of syntax-errors | |
| 1021 | (unbalanced quotes) are NOT supported." | |
| 1022 | ;;; The algorithm is simple: start at point with value nil | |
| 1023 | ;;; and toggle value at each quote found until end of line. | |
| 1024 | ;;; The quote skip is hard-coded, maybe it's possible to change this | |
| 1025 | ;;; and use something like 'string-constant-delimiter' (which | |
| 1026 | ;;; doesn't exist yet) so this function can be used by other modes, | |
| 1027 | ;;; but then one must pay attention to escape sequences, multi-line-constants | |
| 1028 | ;;; and such things. | |
| 1029 | (let ((is-in-fortran-string nil)) | |
| 1030 | (save-excursion | |
| 1031 | (goto-char pos) | |
| 1032 | (fortran-previous-statement) | |
| 1033 | (fortran-next-statement) | |
| 1034 | (while (< (point) pos) | |
| 1035 | ;; Make sure we don't count quotes in continuation column. | |
| 1036 | (if (looking-at "^ ") | |
| 1037 | (goto-char (+ 1 (match-end 0))) | |
| 1038 | (if (and (not is-in-fortran-string) | |
| 1039 | (looking-at comment-start-skip)) | |
| 1040 | (beginning-of-line 2) | |
| 1041 | (if (looking-at "'") | |
| 1042 | (setq is-in-fortran-string (not is-in-fortran-string))) | |
| 1043 | (forward-char 1))))) | |
| 1044 | is-in-fortran-string)) | |
| 1045 | ||
| 1046 | (defun fortran-auto-fill-mode (arg) | |
| 1047 | "Toggle fortran-auto-fill mode. | |
| 1048 | With ARG, turn `fortran-auto-fill' mode on iff ARG is positive. | |
| 1049 | In `fortran-auto-fill' mode, inserting a space at a column beyond `fill-column' | |
| 1050 | automatically breaks the line at a previous space." | |
| 1051 | (interactive "P") | |
| 23029d77 | 1052 | (prog1 (setq auto-fill-function |
| b8cbdf43 | 1053 | (if (if (null arg) |
| 23029d77 | 1054 | (not auto-fill-function) |
| b8cbdf43 RS |
1055 | (> (prefix-numeric-value arg) 0)) |
| 1056 | 'fortran-indent-line | |
| 1057 | nil)) | |
| 1058 | ;; update mode-line | |
| 1059 | (set-buffer-modified-p (buffer-modified-p)))) | |
| 1060 | ||
| 1061 | (defun fortran-do-auto-fill () | |
| 1062 | (interactive) | |
| 1063 | (let* ((opoint (point)) | |
| 1064 | (bol (save-excursion (beginning-of-line) (point))) | |
| 1065 | (eol (save-excursion (end-of-line) (point))) | |
| 1066 | (bos (min eol (+ bol (fortran-current-line-indentation)))) | |
| 1067 | (quote | |
| 1068 | (save-excursion | |
| 1069 | (goto-char bol) | |
| 1070 | (if (looking-at comment-line-start-skip) | |
| 1071 | nil ; OK to break quotes on comment lines. | |
| 1072 | (move-to-column fill-column) | |
| 23029d77 | 1073 | (cond ((fortran-is-in-string-p (point)) |
| b8cbdf43 RS |
1074 | (save-excursion (re-search-backward "[^']'[^']" bol t) |
| 1075 | (if fortran-break-before-delimiters | |
| 1076 | (point) | |
| 1077 | (1+ (point))))) | |
| 1078 | (t nil))))) | |
| 1079 | ;; | |
| 1080 | ;; decide where to split the line. If a position for a quoted | |
| 1081 | ;; string was found above then use that, else break the line | |
| 1082 | ;; before the last delimiter. | |
| 1083 | ;; Delimeters are whitespace, commas, and operators. | |
| 1084 | ;; Will break before a pair of *'s. | |
| 1085 | ;; | |
| 1086 | (fill-point | |
| 1087 | (or quote | |
| 1088 | (save-excursion | |
| 1089 | (move-to-column (1+ fill-column)) | |
| 1090 | (skip-chars-backward "^ \t\n,'+-/*=)" | |
| 1091 | ;;; (if fortran-break-before-delimiters | |
| 1092 | ;;; "^ \t\n,'+-/*=" "^ \t\n,'+-/*=)") | |
| 1093 | ) | |
| 1094 | (if (<= (point) (1+ bos)) | |
| 1095 | (progn | |
| 1096 | (move-to-column (1+ fill-column)) | |
| 1097 | (if (not (re-search-forward "[\t\n,'+-/*)=]" eol t)) | |
| 1098 | (goto-char bol)))) | |
| 1099 | (if (bolp) | |
| 1100 | (re-search-forward "[ \t]" opoint t) | |
| 1101 | (forward-char -1) | |
| 1102 | (if (looking-at "'") | |
| 1103 | (forward-char 1) | |
| 1104 | (skip-chars-backward " \t\*"))) | |
| 1105 | (if fortran-break-before-delimiters | |
| 1106 | (point) | |
| 1107 | (1+ (point)))))) | |
| 1108 | ) | |
| 1109 | ;; if we are in an in-line comment, don't break unless the | |
| 1110 | ;; line of code is longer than it should be. Otherwise | |
| 1111 | ;; break the line at the column computed above. | |
| 1112 | ;; | |
| 23029d77 | 1113 | ;; Need to use fortran-find-comment-start-skip to make sure that quoted !'s |
| b8cbdf43 RS |
1114 | ;; don't prevent a break. |
| 1115 | (if (not (or (save-excursion | |
| 1116 | (if (and (re-search-backward comment-start-skip bol t) | |
| 23029d77 | 1117 | (not (fortran-is-in-string-p (point)))) |
| b8cbdf43 RS |
1118 | (progn |
| 1119 | (skip-chars-backward " \t") | |
| 1120 | (< (current-column) (1+ fill-column))))) | |
| 1121 | (save-excursion | |
| 1122 | (goto-char fill-point) | |
| 1123 | (bolp)))) | |
| 1124 | (if (> (save-excursion | |
| 1125 | (goto-char fill-point) (current-column)) | |
| 1126 | (1+ fill-column)) | |
| 1127 | (progn (goto-char fill-point) | |
| 1128 | (fortran-break-line)) | |
| 1129 | (save-excursion | |
| 1130 | (if (> (save-excursion | |
| 1131 | (goto-char fill-point) | |
| 1132 | (current-column)) | |
| 1133 | (+ (calculate-fortran-indent) fortran-continuation-indent)) | |
| 1134 | (progn | |
| 1135 | (goto-char fill-point) | |
| 1136 | (fortran-break-line)))))) | |
| 1137 | )) | |
| 1138 | (defun fortran-break-line () | |
| 1139 | (let ((opoint (point)) | |
| 1140 | (bol (save-excursion (beginning-of-line) (point))) | |
| 1141 | (eol (save-excursion (end-of-line) (point))) | |
| 1142 | (comment-string nil)) | |
| 1143 | ||
| 1144 | (save-excursion | |
| 23029d77 | 1145 | (if (and comment-start-skip (fortran-find-comment-start-skip)) |
| b8cbdf43 RS |
1146 | (progn |
| 1147 | (re-search-backward comment-start-skip bol t) | |
| 1148 | (setq comment-string (buffer-substring (point) eol)) | |
| 1149 | (delete-region (point) eol)))) | |
| 1150 | ;;; Forward line 1 really needs to go to next non white line | |
| 1151 | (if (save-excursion (forward-line 1) | |
| 1152 | (or (looking-at " [^ 0\n]") | |
| 1153 | (looking-at "\t[1-9]"))) | |
| 1154 | (progn | |
| 1155 | (forward-line 1) | |
| 1156 | (delete-indentation) | |
| 1157 | (delete-char 2) | |
| 1158 | (delete-horizontal-space) | |
| 1159 | (fortran-do-auto-fill)) | |
| 1160 | (fortran-split-line)) | |
| 1161 | (if comment-string | |
| 1162 | (save-excursion | |
| 1163 | (goto-char bol) | |
| 1164 | (end-of-line) | |
| 1165 | (delete-horizontal-space) | |
| 1166 | (indent-to (fortran-comment-hook)) | |
| 1167 | (insert comment-string))))) | |
| 1168 | ||
| 23029d77 JB |
1169 | (defun fortran-analyze-file-format () |
| 1170 | "Returns nil if Fixed format is used, t if TAB formatting is used. | |
| 1171 | Use `fortran-tab-mode-default' if no non-comment statements are found in the | |
| 1172 | file before the end or the first `fortran-analyze-depth' lines." | |
| 1173 | (let ((i 0)) | |
| 1174 | (save-excursion | |
| 1175 | (goto-char (point-min)) | |
| 1176 | (setq i 0) | |
| 1177 | (while (not (or | |
| 1178 | (eobp) | |
| 1179 | (looking-at "\t") | |
| 1180 | (looking-at " ") | |
| 1181 | (> i fortran-analyze-depth))) | |
| 1182 | (forward-line) | |
| 1183 | (setq i (1+ i))) | |
| 1184 | (cond | |
| 1185 | ((looking-at "\t") t) | |
| 1186 | ((looking-at " ") nil) | |
| 1187 | (fortran-tab-mode-default t) | |
| 1188 | (t nil))))) | |
| 1189 | ||
| 1190 | (or (assq 'fortran-tab-mode-string minor-mode-alist) | |
| 1191 | (setq minor-mode-alist (cons | |
| 1192 | '(fortran-tab-mode-string | |
| 1193 | (indent-tabs-mode fortran-tab-mode-string)) | |
| 1194 | minor-mode-alist))) | |
| 1195 | ||
| 49116ac0 JB |
1196 | (provide 'fortran) |
| 1197 | ||
| 1a06eabd | 1198 | ;;; fortran.el ends here |