HCoop / bpt / emacs.git / blame
| Commit | Line | Data |
|---|---|---|
| e5167999 ER |
1 | ;;; fortran.el --- Fortran mode for GNU Emacs |
| 2 | ||
| 3 | ;; Author: Michael D. Prange <prange@erl.mit.edu> | |
| 4 | ;; Maintainer: bug-fortran-mode@erl.mit.edu | |
| 5 | ;; Version 1.28.3 | |
| 6 | ;; Last-Modified: 15 Jul 1991 | |
| fd7fa35a | 7 | ;; Keywords: languages |
| 1a06eabd | 8 | |
| 3dd63760 | 9 | ;;; Copyright (c) 1991 Free Software Foundation, Inc. |
| e5167999 ER |
10 | |
| 11 | ;; This file is part of GNU Emacs. | |
| 12 | ||
| 13 | ;; GNU Emacs is free software; you can redistribute it and/or modify | |
| 14 | ;; it under the terms of the GNU General Public License as published by | |
| 15 | ;; the Free Software Foundation; either version 2, or (at your option) | |
| 16 | ;; any later version. | |
| 17 | ||
| 18 | ;; GNU Emacs is distributed in the hope that it will be useful, | |
| 19 | ;; but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 20 | ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 21 | ;; GNU General Public License for more details. | |
| 22 | ||
| 23 | ;; You should have received a copy of the GNU General Public License | |
| 24 | ;; along with GNU Emacs; see the file COPYING. If not, write to | |
| 25 | ;; the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. | |
| 26 | ||
| 27 | ;;; Commentary: | |
| 28 | ||
| 3dd63760 JB |
29 | ;;; Written by Michael D. Prange (prange@erl.mit.edu) |
| 30 | ;;; Maintained (as of version 1.28) by Stephen A. Wood (saw@hallc1.cebaf.gov) | |
| 31 | ;;; This version is an update of version 1.21 (Oct 1, 1985). | |
| 32 | ;;; Updated by Stephen A. Wood (saw@hallc1.cebaf.gov) to use tab format | |
| 33 | ;;; continuation control and indentation. (Digit after TAB to signify | |
| 34 | ;;; continuation line. This version also incorporates suggestions from | |
| 35 | ;;; Richard Stallman, and the ideas in two previous unpublished versions of | |
| 36 | ;;; fortran .el (version 1.21.1 (from gildea@expo.lcs.mit.edu) and 1.27 | |
| 37 | ;;; (prange@erl.mit.edu).) | |
| 38 | ||
| 39 | ;;; Notes to fortran-mode version 1.28 | |
| 40 | ;;; 1. Fortran mode can support either fixed format or tab format. Fixed | |
| 41 | ;;; format is where statements start in column 6 (first column is 0) | |
| 42 | ;;; and continuation lines are denoted by a character in column 5. | |
| 43 | ;;; In tab mode, statements follow a tab character. Continuation lines | |
| 44 | ;;; are where the first character on a line is a tab and the second is | |
| 45 | ;;; a digit from 1 to 9. | |
| 46 | ;;; 2. When fortran mode is called, the buffer is analyzed to determine what | |
| 47 | ;;; kind of formating is used. Starting at the top of the file, lines | |
| 48 | ;;; are scanned until a line is found that begins with a tab or 6 spaces. | |
| 49 | ;;; The mode for that buffer is then set to either tab or fixed format | |
| 50 | ;;; based on that line. If no line starting with a tab or 6 spaces is | |
| 51 | ;;; found before the end of the buffer or in the first 100 lines, the | |
| 52 | ;;; mode is set from the variable `fortran-tab-mode-default'. t is tab | |
| 53 | ;;; mode, nil is fixed format mode. By default, fixed format mode is used. | |
| 54 | ;;; To use tabbing mode as the default, put the following line in .emacs | |
| 55 | ;;; (setq fortran-tab-mode-default t) | |
| 56 | ;;; This line should not be in the hook since the hook is called only | |
| 57 | ;;; after the file is analyzed. | |
| 58 | ;;; To force a particular mode independent of the analysis, attach | |
| 59 | ;;; (fortran-tab-mode t) or (fortran-tab-mode nil) | |
| 60 | ;;; to fortran-mode-hook. | |
| 61 | ;;; 3. The command `fortran-tab-mode' will toggle between fixed and tab | |
| 62 | ;;; formatting modes. The file will not automatically be reformatted, | |
| 63 | ;;; but either `indent-region' or `fortran-indent-subprogram' can be | |
| 64 | ;;; used to reformat portions of the file. | |
| 65 | ;;; 4. Several abbreviations have been added. Abbreviation mode is turned | |
| 66 | ;;; on by default. | |
| 67 | ;;; 5. The routine fortran-blink-matching if has been incorporated (from | |
| 68 | ;;; experimental version 1.27). If the variable of the same name is set | |
| 69 | ;;; to t, the the matching if statement is blinked whenever an endif | |
| 70 | ;;; line is indented. | |
| 71 | ;;; 6. C-c C-w is now bound to fortran-window-create-momentarily (from | |
| 72 | ;;; experimental version 1.27.) | |
| 73 | ;;; 7. LFD is now bound to fortran-reindent-then-newline-and-indent. | |
| 74 | ;;; 8. fortran-continuation-string (was fortran-continuation-char) is now | |
| 75 | ;;; a string rather than a character. | |
| 76 | ;;; 9. Fixed a bug from 1.21 that gave max-lisp-eval-depth exceeded when | |
| 77 | ;;; Comments lines had !'s in them. | |
| 78 | ;;; 10. DEC fortran recognizes a & in the first column as a continuation. | |
| 79 | ;;; character. This mode does not recognize the & as a continuation | |
| 80 | ;;; character. | |
| 81 | ;;; 11. fortran-blink-matching-if still is in effect when indenting a region. | |
| 82 | ;;; Is this a desirable effect? (It looks kind of neat) | |
| 83 | ;;; 12. If you strike a digit and there are exactly 5 characters, all spaces | |
| 84 | ;;; to the left of the point, the digit will be inserted in place to | |
| 85 | ;;; serve as a continuation line marker. Similarly, if the only thing to | |
| 86 | ;;; the left of the point is a single tab, and the last command issued | |
| 87 | ;;; was neither fortran-indent-line (TAB) or fortran-reindent-then-newline- | |
| 88 | ;;; and-indent (LFD), the digit is inserted as a tab format style | |
| 89 | ;;; continuation character. | |
| 90 | ;;; 13. Both modes should usually work with tab-width set to other than 8. | |
| 91 | ;;; However, in tab-mode, if tab-width is less than 6, the column number | |
| 92 | ;;; for the minimum indentation is set to 6 so that all line numbers will | |
| 93 | ;;; have have a tab after them. This may be a bit ugly, but why would | |
| 94 | ;;; you want to use a tab-width other than 8 anyway? | |
| 95 | ;;; 14. When in tab mode, the fortran column ruler will not be correct if | |
| 96 | ;;; tab-width is not 8. | |
| 97 | ||
| 3dd63760 JB |
98 | ;;; Author acknowledges help from Stephen Gildea <gildea@erl.mit.edu> |
| 99 | ||
| 100 | ;;; Bugs to bug-fortran-mode@erl.mit.edu | |
| 101 | ||
| e5167999 ER |
102 | ;;; Code: |
| 103 | ||
| 3dd63760 JB |
104 | ;;;###autoload |
| 105 | (defvar fortran-tab-mode-default nil | |
| 106 | "*Default tabbing/carriage control style for empty files in fortran mode. | |
| 107 | t indicates that tab-digit style of continuation control will be used. | |
| 108 | nil indicates that continuation lines are marked with a character in | |
| 109 | column 6.") | |
| 110 | ||
| 111 | (defvar fortran-do-indent 3 | |
| 112 | "*Extra indentation applied to `do' blocks.") | |
| 113 | ||
| 114 | (defvar fortran-if-indent 3 | |
| 115 | "*Extra indentation applied to `if' blocks.") | |
| 116 | ||
| 117 | (defvar fortran-continuation-indent 5 | |
| 118 | "*Extra indentation applied to `continuation' lines.") | |
| 119 | ||
| 120 | (defvar fortran-comment-indent-style 'fixed | |
| 121 | "*nil forces comment lines not to be touched, | |
| 122 | 'fixed produces fixed comment indentation to comment-column, | |
| 123 | and 'relative indents to current fortran indentation plus comment-column.") | |
| 124 | ||
| 125 | (defvar fortran-comment-line-column 6 | |
| 126 | "*Indentation for text in comment lines.") | |
| 127 | ||
| 128 | (defvar comment-line-start nil | |
| 129 | "*Delimiter inserted to start new full-line comment.") | |
| 130 | ||
| 131 | (defvar comment-line-start-skip nil | |
| 132 | "*Regexp to match the start of a full-line comment.") | |
| 133 | ||
| 134 | (defvar fortran-minimum-statement-indent 6 | |
| 135 | "*Minimum indentation for fortran statements.") | |
| 136 | ||
| 137 | ;; Note that this is documented in the v18 manuals as being a string | |
| 138 | ;; of length one rather than a single character. | |
| 139 | ;; The code in this file accepts either format for compatibility. | |
| 140 | (defvar fortran-comment-indent-char " " | |
| 141 | "*Single-character string inserted for Fortran comment indentation. | |
| 142 | Normally a space.") | |
| 143 | ||
| 144 | (defvar fortran-line-number-indent 1 | |
| 145 | "*Maximum indentation for Fortran line numbers. | |
| 146 | 5 means right-justify them within their five-column field.") | |
| 147 | ||
| 148 | (defvar fortran-check-all-num-for-matching-do nil | |
| 149 | "*Non-nil causes all numbered lines to be treated as possible do-loop ends.") | |
| 150 | ||
| 151 | (defvar fortran-blink-matching-if nil | |
| 152 | "*From a fortran `endif' statement, blink the matching `if' statement.") | |
| 153 | ||
| 154 | (defvar fortran-continuation-string "$" | |
| 155 | "*Single-character string used for fortran continuation lines. | |
| 156 | In fixed format continuation style, this character is inserted in | |
| 157 | column 6 by \\[fortran-split-line] to begin a continuation line. | |
| 158 | Also, if \\[fortran-indent-line] finds this at the beginning of a line, it will | |
| 159 | convert the line into a continuation line of the appropriate style. | |
| 160 | Normally $.") | |
| 161 | ||
| 162 | (defvar fortran-comment-region "c$$$" | |
| 163 | "*String inserted by \\[fortran-comment-region]\ | |
| 164 | at start of each line in region.") | |
| 165 | ||
| 166 | (defvar fortran-electric-line-number t | |
| 167 | "*Non-nil causes line number digits to be moved to the correct column as\ | |
| 168 | typed.") | |
| 169 | ||
| 170 | (defvar fortran-startup-message t | |
| 171 | "*Non-nil displays a startup message when Fortran mode is first called.") | |
| 172 | ||
| 173 | (defvar fortran-column-ruler " " | |
| 174 | "*String displayed above current line by \\[fortran-column-ruler].") | |
| 175 | ||
| 176 | (defconst bug-fortran-mode "bug-fortran-mode@erl.mit.edu" | |
| 177 | "Address of mailing list for Fortran mode bugs.") | |
| 178 | ||
| 179 | (defconst fortran-mode-version "1.28.3") | |
| 180 | ||
| 181 | (defvar fortran-mode-syntax-table nil | |
| 182 | "Syntax table in use in Fortran mode buffers.") | |
| 183 | ||
| 184 | (defvar fortran-analyze-depth 100 | |
| 185 | "Number of lines to scan to determine whether to use fixed or tab format\ | |
| 186 | style.") | |
| 187 | ||
| 188 | (if fortran-mode-syntax-table | |
| 189 | () | |
| 190 | (setq fortran-mode-syntax-table (make-syntax-table)) | |
| 191 | (modify-syntax-entry ?\; "w" fortran-mode-syntax-table) | |
| 192 | (modify-syntax-entry ?\r " " fortran-mode-syntax-table) | |
| 193 | (modify-syntax-entry ?+ "." fortran-mode-syntax-table) | |
| 194 | (modify-syntax-entry ?- "." fortran-mode-syntax-table) | |
| 195 | (modify-syntax-entry ?= "." fortran-mode-syntax-table) | |
| 196 | (modify-syntax-entry ?* "." fortran-mode-syntax-table) | |
| 197 | (modify-syntax-entry ?/ "." fortran-mode-syntax-table) | |
| 198 | (modify-syntax-entry ?\' "\"" fortran-mode-syntax-table) | |
| 199 | (modify-syntax-entry ?\" "\"" fortran-mode-syntax-table) | |
| 200 | (modify-syntax-entry ?\\ "/" fortran-mode-syntax-table) | |
| 201 | (modify-syntax-entry ?. "w" fortran-mode-syntax-table) | |
| 202 | (modify-syntax-entry ?\n ">" fortran-mode-syntax-table)) | |
| 203 | ||
| 204 | (defvar fortran-mode-map () | |
| 205 | "Keymap used in fortran mode.") | |
| 206 | (if fortran-mode-map | |
| 207 | () | |
| 208 | (setq fortran-mode-map (make-sparse-keymap)) | |
| 209 | (define-key fortran-mode-map ";" 'fortran-abbrev-start) | |
| 210 | (define-key fortran-mode-map "\C-c;" 'fortran-comment-region) | |
| 211 | (define-key fortran-mode-map "\e\C-a" 'beginning-of-fortran-subprogram) | |
| 212 | (define-key fortran-mode-map "\e\C-e" 'end-of-fortran-subprogram) | |
| 213 | (define-key fortran-mode-map "\e;" 'fortran-indent-comment) | |
| 214 | (define-key fortran-mode-map "\e\C-h" 'mark-fortran-subprogram) | |
| 215 | (define-key fortran-mode-map "\e\n" 'fortran-split-line) | |
| 216 | (define-key fortran-mode-map "\n" 'fortran-reindent-then-newline-and-indent) | |
| 217 | (define-key fortran-mode-map "\e\C-q" 'fortran-indent-subprogram) | |
| 218 | (define-key fortran-mode-map "\C-c\C-w" 'fortran-window-create-momentarily) | |
| 219 | (define-key fortran-mode-map "\C-c\C-r" 'fortran-column-ruler) | |
| 220 | (define-key fortran-mode-map "\C-c\C-p" 'fortran-previous-statement) | |
| 221 | (define-key fortran-mode-map "\C-c\C-n" 'fortran-next-statement) | |
| 222 | (define-key fortran-mode-map "\t" 'fortran-indent-line) | |
| 223 | (define-key fortran-mode-map "0" 'fortran-electric-line-number) | |
| 224 | (define-key fortran-mode-map "1" 'fortran-electric-line-number) | |
| 225 | (define-key fortran-mode-map "2" 'fortran-electric-line-number) | |
| 226 | (define-key fortran-mode-map "3" 'fortran-electric-line-number) | |
| 227 | (define-key fortran-mode-map "4" 'fortran-electric-line-number) | |
| 228 | (define-key fortran-mode-map "5" 'fortran-electric-line-number) | |
| 229 | (define-key fortran-mode-map "6" 'fortran-electric-line-number) | |
| 230 | (define-key fortran-mode-map "7" 'fortran-electric-line-number) | |
| 231 | (define-key fortran-mode-map "8" 'fortran-electric-line-number) | |
| 232 | (define-key fortran-mode-map "9" 'fortran-electric-line-number)) | |
| 233 | \f | |
| 234 | (defvar fortran-mode-abbrev-table nil) | |
| 235 | (if fortran-mode-abbrev-table | |
| 236 | () | |
| 237 | (let ((ac abbrevs-changed)) | |
| 238 | (define-abbrev-table 'fortran-mode-abbrev-table ()) | |
| 239 | (define-abbrev fortran-mode-abbrev-table ";au" "automatic" nil) | |
| 240 | (define-abbrev fortran-mode-abbrev-table ";b" "byte" nil) | |
| 241 | (define-abbrev fortran-mode-abbrev-table ";bl" "block data" nil) | |
| 242 | (define-abbrev fortran-mode-abbrev-table ";ch" "character" nil) | |
| 243 | (define-abbrev fortran-mode-abbrev-table ";cl" "close" nil) | |
| 244 | (define-abbrev fortran-mode-abbrev-table ";c" "continue" nil) | |
| 245 | (define-abbrev fortran-mode-abbrev-table ";cm" "common" nil) | |
| 246 | (define-abbrev fortran-mode-abbrev-table ";cx" "complex" nil) | |
| 247 | (define-abbrev fortran-mode-abbrev-table ";df" "define" nil) | |
| 248 | (define-abbrev fortran-mode-abbrev-table ";di" "dimension" nil) | |
| 249 | (define-abbrev fortran-mode-abbrev-table ";do" "double" nil) | |
| 250 | (define-abbrev fortran-mode-abbrev-table ";dc" "double complex" nil) | |
| 251 | (define-abbrev fortran-mode-abbrev-table ";dp" "double precision" nil) | |
| 252 | (define-abbrev fortran-mode-abbrev-table ";dw" "do while" nil) | |
| 253 | (define-abbrev fortran-mode-abbrev-table ";e" "else" nil) | |
| 254 | (define-abbrev fortran-mode-abbrev-table ";ed" "enddo" nil) | |
| 255 | (define-abbrev fortran-mode-abbrev-table ";el" "elseif" nil) | |
| 256 | (define-abbrev fortran-mode-abbrev-table ";en" "endif" nil) | |
| 257 | (define-abbrev fortran-mode-abbrev-table ";eq" "equivalence" nil) | |
| 258 | (define-abbrev fortran-mode-abbrev-table ";ex" "external" nil) | |
| 259 | (define-abbrev fortran-mode-abbrev-table ";ey" "entry" nil) | |
| 260 | (define-abbrev fortran-mode-abbrev-table ";f" "format" nil) | |
| 261 | (define-abbrev fortran-mode-abbrev-table ";fa" ".false." nil) | |
| 262 | (define-abbrev fortran-mode-abbrev-table ";fu" "function" nil) | |
| 263 | (define-abbrev fortran-mode-abbrev-table ";g" "goto" nil) | |
| 264 | (define-abbrev fortran-mode-abbrev-table ";im" "implicit" nil) | |
| 265 | (define-abbrev fortran-mode-abbrev-table ";ib" "implicit byte" nil) | |
| 266 | (define-abbrev fortran-mode-abbrev-table ";ic" "implicit complex" nil) | |
| 267 | (define-abbrev fortran-mode-abbrev-table ";ich" "implicit character" nil) | |
| 268 | (define-abbrev fortran-mode-abbrev-table ";ii" "implicit integer" nil) | |
| 269 | (define-abbrev fortran-mode-abbrev-table ";il" "implicit logical" nil) | |
| 270 | (define-abbrev fortran-mode-abbrev-table ";ir" "implicit real" nil) | |
| 271 | (define-abbrev fortran-mode-abbrev-table ";inc" "include" nil) | |
| 272 | (define-abbrev fortran-mode-abbrev-table ";in" "integer" nil) | |
| 273 | (define-abbrev fortran-mode-abbrev-table ";intr" "intrinsic" nil) | |
| 274 | (define-abbrev fortran-mode-abbrev-table ";l" "logical" nil) | |
| 275 | (define-abbrev fortran-mode-abbrev-table ";n" "namelist" nil) | |
| 276 | (define-abbrev fortran-mode-abbrev-table ";o" "open" nil) ; was ;op | |
| 277 | (define-abbrev fortran-mode-abbrev-table ";pa" "parameter" nil) | |
| 278 | (define-abbrev fortran-mode-abbrev-table ";pr" "program" nil) | |
| 279 | (define-abbrev fortran-mode-abbrev-table ";ps" "pause" nil) | |
| 280 | (define-abbrev fortran-mode-abbrev-table ";p" "print" nil) | |
| 281 | (define-abbrev fortran-mode-abbrev-table ";rc" "record" nil) | |
| 282 | (define-abbrev fortran-mode-abbrev-table ";re" "real" nil) | |
| 283 | (define-abbrev fortran-mode-abbrev-table ";r" "read" nil) | |
| 284 | (define-abbrev fortran-mode-abbrev-table ";rt" "return" nil) | |
| 285 | (define-abbrev fortran-mode-abbrev-table ";rw" "rewind" nil) | |
| 286 | (define-abbrev fortran-mode-abbrev-table ";s" "stop" nil) | |
| 287 | (define-abbrev fortran-mode-abbrev-table ";sa" "save" nil) | |
| 288 | (define-abbrev fortran-mode-abbrev-table ";st" "structure" nil) | |
| 289 | (define-abbrev fortran-mode-abbrev-table ";sc" "static" nil) | |
| 290 | (define-abbrev fortran-mode-abbrev-table ";su" "subroutine" nil) | |
| 291 | (define-abbrev fortran-mode-abbrev-table ";tr" ".true." nil) | |
| 292 | (define-abbrev fortran-mode-abbrev-table ";ty" "type" nil) | |
| 293 | (define-abbrev fortran-mode-abbrev-table ";vo" "volatile" nil) | |
| 294 | (define-abbrev fortran-mode-abbrev-table ";w" "write" nil) | |
| 295 | (setq abbrevs-changed ac))) | |
| 296 | \f | |
| 297 | ;;;###autoload | |
| 298 | (defun fortran-mode () | |
| 299 | "Major mode for editing fortran code. | |
| 300 | Tab indents the current fortran line correctly. | |
| 301 | `do' statements must not share a common `continue'. | |
| 302 | ||
| 303 | Type `;?' or `;\\[help-command]' to display a list of built-in\ | |
| 304 | abbrevs for Fortran keywords. | |
| 305 | ||
| 306 | Key definitions: | |
| 307 | \\{fortran-mode-map} | |
| 308 | ||
| 309 | Variables controlling indentation style and extra features: | |
| 310 | ||
| 311 | comment-start | |
| 312 | Normally nil in Fortran mode. If you want to use comments | |
| 313 | starting with `!', set this to the string \"!\". | |
| 314 | fortran-do-indent | |
| 315 | Extra indentation within do blocks. (default 3) | |
| 316 | fortran-if-indent | |
| 317 | Extra indentation within if blocks. (default 3) | |
| 318 | fortran-continuation-indent | |
| 319 | Extra indentation appled to continuation statements. (default 5) | |
| 320 | fortran-comment-line-column | |
| 321 | Amount of indentation for text within full-line comments. (default 6) | |
| 322 | fortran-comment-indent-style | |
| 323 | nil means don't change indentation of text in full-line comments, | |
| 324 | fixed means indent that text at column fortran-comment-line-column | |
| 325 | relative means indent at fortran-comment-line-column beyond the | |
| 326 | indentation for a line of code. | |
| 327 | (default 'fixed) | |
| 328 | fortran-comment-indent-char | |
| 329 | Single-character string be inserted instead of space for | |
| 330 | full-line comment indentation. (default \" \") | |
| 331 | fortran-minimum-statement-indent | |
| 332 | Minimum indentation for fortran statements. (default 6) | |
| 333 | fortran-line-number-indent | |
| 334 | Maximum indentation for line numbers. A line number will get | |
| 335 | less than this much indentation if necessary to avoid reaching | |
| 336 | column 5. (default 1) | |
| 337 | fortran-check-all-num-for-matching-do | |
| 338 | Non-nil causes all numbered lines to be treated as possible 'continue' | |
| 339 | statements. (default nil) | |
| 340 | fortran-blink-matching-if | |
| 341 | From a fortran `endif' statement, blink the matching `if' statement. | |
| 342 | (default nil) | |
| 343 | fortran-continuation-string | |
| 344 | Single-character string to be inserted in column 5 of a continuation | |
| 345 | line. (default \"$\") | |
| 346 | fortran-comment-region | |
| 347 | String inserted by \\[fortran-comment-region] at start of each line in | |
| 348 | region. (default \"c$$$\") | |
| 349 | fortran-electric-line-number | |
| 350 | Non-nil causes line number digits to be moved to the correct column | |
| 351 | as typed. (default t) | |
| 352 | fortran-startup-message | |
| 353 | Set to nil to inhibit message first time Fortran mode is used. | |
| 354 | ||
| 355 | Turning on Fortran mode calls the value of the variable fortran-mode-hook | |
| 356 | with no args, if that value is non-nil." | |
| 357 | (interactive) | |
| 358 | (kill-all-local-variables) | |
| 359 | (if fortran-startup-message | |
| 360 | (message "Emacs Fortran mode version %s. Bugs to %s" | |
| 361 | fortran-mode-version bug-fortran-mode)) | |
| 362 | (setq fortran-startup-message nil) | |
| 363 | (setq local-abbrev-table fortran-mode-abbrev-table) | |
| 364 | (set-syntax-table fortran-mode-syntax-table) | |
| 365 | (make-local-variable 'indent-line-function) | |
| 366 | (setq indent-line-function 'fortran-indent-line) | |
| 367 | (make-local-variable 'comment-indent-hook) | |
| 368 | (setq comment-indent-hook 'fortran-comment-hook) | |
| 369 | (make-local-variable 'comment-line-start-skip) | |
| 370 | (setq comment-line-start-skip | |
| 371 | "^[Cc*]\\(\\([^ \t\n]\\)\\1*\\)?[ \t]*") ;[^ \t\n]* handles c$$$ | |
| 372 | (make-local-variable 'comment-line-start) | |
| 373 | (setq comment-line-start "c") | |
| 374 | (make-local-variable 'comment-start-skip) | |
| 375 | (setq comment-start-skip "![ \t]*") | |
| 376 | (make-local-variable 'comment-start) | |
| 377 | (setq comment-start nil) | |
| 378 | (make-local-variable 'require-final-newline) | |
| 379 | (setq require-final-newline t) | |
| 380 | (make-local-variable 'abbrev-all-caps) | |
| 381 | (setq abbrev-all-caps t) | |
| 382 | (make-local-variable 'indent-tabs-mode) | |
| 383 | (setq indent-tabs-mode nil) | |
| 384 | (setq abbrev-mode t) ; ?? (abbrev-mode 1) instead?? | |
| 385 | (use-local-map fortran-mode-map) | |
| 386 | (setq mode-name "Fortran") | |
| 387 | (setq major-mode 'fortran-mode) | |
| 388 | (make-local-variable 'fortran-tab-mode) | |
| 389 | (make-local-variable 'fortran-comment-line-column) | |
| 390 | (make-local-variable 'fortran-minimum-statement-indent) | |
| 391 | (make-local-variable 'fortran-column-ruler) | |
| 392 | (make-local-variable 'fortran-tab-mode-string) | |
| 393 | (fortran-tab-mode (fortran-analyze-file-format)) | |
| 394 | (run-hooks 'fortran-mode-hook)) | |
| 395 | \f | |
| 396 | (defun fortran-comment-hook () | |
| 397 | (save-excursion | |
| 398 | (skip-chars-backward " \t") | |
| 399 | (max (+ 1 (current-column)) | |
| 400 | comment-column))) | |
| 401 | ||
| 402 | (defun fortran-indent-comment () | |
| 403 | "Align or create comment on current line. | |
| 404 | Existing comments of all types are recognized and aligned. | |
| 405 | If the line has no comment, a side-by-side comment is inserted and aligned | |
| 406 | if the value of comment-start is not nil. | |
| 407 | Otherwise, a separate-line comment is inserted, on this line | |
| 408 | or on a new line inserted before this line if this line is not blank." | |
| 409 | (interactive) | |
| 410 | (beginning-of-line) | |
| 411 | ;; Recognize existing comments of either kind. | |
| 412 | (cond ((looking-at comment-line-start-skip) | |
| 413 | (fortran-indent-line)) | |
| 414 | ((re-search-forward comment-start-skip | |
| 415 | (save-excursion (end-of-line) (point)) t) | |
| 416 | (indent-for-comment)) | |
| 417 | ;; No existing comment. | |
| 418 | ;; If side-by-side comments are defined, insert one, | |
| 419 | ;; unless line is now blank. | |
| 420 | ((and comment-start (not (looking-at "^[ \t]*$"))) | |
| 421 | (end-of-line) | |
| 422 | (delete-horizontal-space) | |
| 423 | (indent-to (fortran-comment-hook)) | |
| 424 | (insert comment-start)) | |
| 425 | ;; Else insert separate-line comment, making a new line if nec. | |
| 426 | (t | |
| 427 | (if (looking-at "^[ \t]*$") | |
| 428 | (delete-horizontal-space) | |
| 429 | (beginning-of-line) | |
| 430 | (insert "\n") | |
| 431 | (forward-char -1)) | |
| 432 | (insert comment-line-start) | |
| 433 | (insert-char (if (stringp fortran-comment-indent-char) | |
| 434 | (aref fortran-comment-indent-char 0) | |
| 435 | fortran-comment-indent-char) | |
| 436 | (- (calculate-fortran-indent) (current-column)))))) | |
| 437 | ||
| 438 | (defun fortran-comment-region (beg-region end-region arg) | |
| 439 | "Comments every line in the region. | |
| 440 | Puts fortran-comment-region at the beginning of every line in the region. | |
| 441 | BEG-REGION and END-REGION are args which specify the region boundaries. | |
| 442 | With non-nil ARG, uncomments the region." | |
| 443 | (interactive "*r\nP") | |
| 444 | (let ((end-region-mark (make-marker)) (save-point (point-marker))) | |
| 445 | (set-marker end-region-mark end-region) | |
| 446 | (goto-char beg-region) | |
| 447 | (beginning-of-line) | |
| 448 | (if (not arg) ;comment the region | |
| 449 | (progn (insert fortran-comment-region) | |
| 450 | (while (and (= (forward-line 1) 0) | |
| 451 | (< (point) end-region-mark)) | |
| 452 | (insert fortran-comment-region))) | |
| 453 | (let ((com (regexp-quote fortran-comment-region))) ;uncomment the region | |
| 454 | (if (looking-at com) | |
| 455 | (delete-region (point) (match-end 0))) | |
| 456 | (while (and (= (forward-line 1) 0) | |
| 457 | (< (point) end-region-mark)) | |
| 458 | (if (looking-at com) | |
| 459 | (delete-region (point) (match-end 0)))))) | |
| 460 | (goto-char save-point) | |
| 461 | (set-marker end-region-mark nil) | |
| 462 | (set-marker save-point nil))) | |
| 463 | \f | |
| 464 | (defun fortran-abbrev-start () | |
| 465 | "Typing \";\\[help-command]\" or \";?\" lists all the fortran abbrevs. | |
| 466 | Any other key combination is executed normally." | |
| 467 | (interactive) | |
| 468 | (let (c) | |
| 469 | (insert last-command-char) | |
| 470 | (if (or (= (setq c (read-char)) ??) ;insert char if not equal to `?' | |
| 471 | (= c help-char)) | |
| 472 | (fortran-abbrev-help) | |
| 473 | (setq unread-command-char c)))) | |
| 474 | ||
| 475 | (defun fortran-abbrev-help () | |
| 476 | "List the currently defined abbrevs in Fortran mode." | |
| 477 | (interactive) | |
| 478 | (message "Listing abbrev table...") | |
| 479 | (require 'abbrevlist) | |
| 480 | (list-one-abbrev-table fortran-mode-abbrev-table "*Help*") | |
| 481 | (message "Listing abbrev table...done")) | |
| 482 | ||
| 483 | (defun fortran-column-ruler () | |
| 484 | "Inserts a column ruler momentarily above current line, till next keystroke. | |
| 485 | The ruler is defined by the value of fortran-column-ruler. | |
| 486 | The key typed is executed unless it is SPC." | |
| 487 | (interactive) | |
| 488 | (momentary-string-display | |
| 489 | fortran-column-ruler (save-excursion (beginning-of-line) (point)) | |
| 490 | nil "Type SPC or any command to erase ruler.")) | |
| 491 | ||
| 492 | (defun fortran-window-create () | |
| 493 | "Makes the window 72 columns wide. | |
| 494 | See also fortran-window-create-momentarily." | |
| 495 | (interactive) | |
| 496 | (condition-case error | |
| 497 | (progn | |
| 498 | (let ((window-min-width 2)) | |
| f98955ea JB |
499 | (if (< (window-width) (frame-width)) |
| 500 | (enlarge-window-horizontally (- (frame-width) | |
| 3dd63760 JB |
501 | (window-width) 1))) |
| 502 | (split-window-horizontally 73) | |
| 503 | (other-window 1) | |
| 504 | (switch-to-buffer " fortran-window-extra" t) | |
| 505 | (select-window (previous-window)))) | |
| 506 | (error (message "No room for fortran window.") | |
| 507 | 'error))) | |
| 508 | ||
| 509 | (defun fortran-window-create-momentarily (&optional arg) | |
| 510 | "Momentarily makes the window 72 columns wide. | |
| 511 | Optional ARG non-nil and non-unity disables the momentary feature. | |
| 512 | See also fortran-window-create." | |
| 513 | (interactive "p") | |
| 514 | (if (or (not arg) | |
| 515 | (= arg 1)) | |
| 516 | (save-window-excursion | |
| 517 | (if (not (equal (fortran-window-create) 'error)) | |
| 518 | (progn (message "Type SPC to continue editing.") | |
| 519 | (let ((char (read-char))) | |
| 520 | (or (equal char (string-to-char " ")) | |
| 521 | (setq unread-command-char char)))))) | |
| 522 | (fortran-window-create))) | |
| 523 | ||
| 524 | (defun fortran-split-line () | |
| 525 | "Break line at point and insert continuation marker and alignment." | |
| 526 | (interactive) | |
| 527 | (delete-horizontal-space) | |
| 528 | (if (save-excursion (beginning-of-line) (looking-at comment-line-start-skip)) | |
| 529 | (insert "\n" comment-line-start " ") | |
| 530 | (if fortran-tab-mode | |
| 531 | (progn | |
| 532 | (insert "\n\t") | |
| 533 | (insert-char (fortran-numerical-continuation-char) 1)) | |
| 534 | (insert "\n" fortran-continuation-string))) | |
| 535 | (fortran-indent-line)) | |
| 536 | ||
| 537 | (defun fortran-numerical-continuation-char () | |
| 538 | "Return a digit for tab-digit style of continution lines. | |
| 539 | If, previous line is a tab-digit continuation line, returns that digit | |
| 540 | plus one. Otherwise return 1. Zero not allowed." | |
| 541 | (save-excursion | |
| 542 | (forward-line -1) | |
| 543 | (if (looking-at "\t[1-9]") | |
| 544 | (+ ?1 (% (- (char-after (+ (point) 1)) ?0) 9)) | |
| 545 | ?1))) | |
| 546 | ||
| 547 | (defun delete-horizontal-regexp (chars) | |
| 548 | "Delete all characters in CHARS around point. | |
| 549 | CHARS is like the inside of a [...] in a regular expression | |
| 550 | except that ] is never special and \ quotes ^, - or \." | |
| 551 | (interactive "*s") | |
| 552 | (skip-chars-backward chars) | |
| 553 | (delete-region (point) (progn (skip-chars-forward chars) (point)))) | |
| 554 | ||
| 555 | (defun fortran-electric-line-number (arg) | |
| 556 | "Self insert, but if part of a Fortran line number indent it automatically. | |
| 557 | Auto-indent does not happen if a numeric arg is used." | |
| 558 | ;The use of arg may be superfluous here since there apears to be no way to | |
| 559 | ;prefix a digit key with an argument. | |
| 560 | (interactive "P") | |
| 561 | (if (or arg (not fortran-electric-line-number)) | |
| 562 | (if arg | |
| 563 | (self-insert-command arg) | |
| 564 | (self-insert-command 1)) | |
| 565 | (if (or (and (= 5 (current-column)) | |
| 566 | (save-excursion | |
| 567 | (beginning-of-line) | |
| 568 | (looking-at " ")));In col 5 with only spaces to left. | |
| 569 | (and (= fortran-minimum-statement-indent (current-column)) | |
| 570 | (save-excursion | |
| 571 | (beginning-of-line) | |
| 572 | (looking-at "\t"));In col 8 with a single tab to the left. | |
| 573 | (not (or (eq last-command 'fortran-indent-line) | |
| 574 | (eq last-command | |
| 575 | 'fortran-reindent-then-newline-and-indent)))) | |
| 576 | (save-excursion | |
| 577 | (re-search-backward "[^ \t0-9]" | |
| 578 | (save-excursion | |
| 579 | (beginning-of-line) | |
| 580 | (point)) | |
| 581 | t)) ;not a line number | |
| 582 | (looking-at "[0-9]") ;within a line number | |
| 583 | ) | |
| 584 | (insert last-command-char) | |
| 585 | (skip-chars-backward " \t") | |
| 586 | (insert last-command-char) | |
| 587 | (fortran-indent-line)))) | |
| 588 | \f | |
| 589 | (defun beginning-of-fortran-subprogram () | |
| 590 | "Moves point to the beginning of the current fortran subprogram." | |
| 591 | (interactive) | |
| 592 | (let ((case-fold-search t)) | |
| 593 | (beginning-of-line -1) | |
| 594 | (re-search-backward "^[ \t0-9]*end\\b[ \t]*[^ \t=(a-z]" nil 'move) | |
| 595 | (if (looking-at "^[ \t0-9]*end\\b[ \t]*[^ \t=(a-z]") | |
| 596 | (forward-line 1)))) | |
| 597 | ||
| 598 | (defun end-of-fortran-subprogram () | |
| 599 | "Moves point to the end of the current fortran subprogram." | |
| 600 | (interactive) | |
| 601 | (let ((case-fold-search t)) | |
| 602 | (beginning-of-line 2) | |
| 603 | (re-search-forward "^[ \t0-9]*end\\b[ \t]*[^ \t=(a-z]" nil 'move) | |
| 604 | (goto-char (match-beginning 0)) | |
| 605 | (forward-line 1))) | |
| 606 | ||
| 607 | (defun mark-fortran-subprogram () | |
| 608 | "Put mark at end of fortran subprogram, point at beginning. | |
| 609 | The marks are pushed." | |
| 610 | (interactive) | |
| 611 | (end-of-fortran-subprogram) | |
| 612 | (push-mark (point)) | |
| 613 | (beginning-of-fortran-subprogram)) | |
| 614 | ||
| 615 | (defun fortran-previous-statement () | |
| 616 | "Moves point to beginning of the previous fortran statement. | |
| 617 | Returns 'first-statement if that statement is the first | |
| 618 | non-comment Fortran statement in the file, and nil otherwise." | |
| 619 | (interactive) | |
| 620 | (let (not-first-statement continue-test) | |
| 621 | (beginning-of-line) | |
| 622 | (setq continue-test | |
| 623 | (or (looking-at | |
| 624 | (concat "[ \t]*" (regexp-quote fortran-continuation-string))) | |
| 625 | (or (looking-at " [^ 0\n]") | |
| 626 | (looking-at "\t[1-9]")))) | |
| 627 | (while (and (setq not-first-statement (= (forward-line -1) 0)) | |
| 628 | (or (looking-at comment-line-start-skip) | |
| 629 | (looking-at "[ \t]*$") | |
| 630 | (looking-at " [^ 0\n]") | |
| 631 | (looking-at "\t[1-9]") | |
| 632 | (looking-at (concat "[ \t]*" comment-start-skip))))) | |
| 633 | (cond ((and continue-test | |
| 634 | (not not-first-statement)) | |
| 635 | (message "Incomplete continuation statement.")) | |
| 636 | (continue-test | |
| 637 | (fortran-previous-statement)) | |
| 638 | ((not not-first-statement) | |
| 639 | 'first-statement)))) | |
| 640 | ||
| 641 | (defun fortran-next-statement () | |
| 642 | "Moves point to beginning of the next fortran statement. | |
| 643 | Returns `last-statement' if that statement is the last | |
| 644 | non-comment Fortran statement in the file, and nil otherwise." | |
| 645 | (interactive) | |
| 646 | (let (not-last-statement) | |
| 647 | (beginning-of-line) | |
| 648 | (while (and (setq not-last-statement (= (forward-line 1) 0)) | |
| 649 | (or (looking-at comment-line-start-skip) | |
| 650 | (looking-at "[ \t]*$") | |
| 651 | (looking-at " [^ 0\n]") | |
| 652 | (looking-at "\t[1-9]") | |
| 653 | (looking-at (concat "[ \t]*" comment-start-skip))))) | |
| 654 | (if (not not-last-statement) | |
| 655 | 'last-statement))) | |
| 656 | \f | |
| 657 | (defun fortran-blink-matching-if () | |
| 658 | "From a fortran `endif' statement, blink the matching `if' statement." | |
| 659 | (let ((count 1) (top-of-window (window-start)) matching-if | |
| 660 | (endif-point (point)) message) | |
| 661 | (if (save-excursion (beginning-of-line) | |
| 662 | (skip-chars-forward " \t0-9") | |
| 663 | (looking-at "end[ \t]*if\\b")) | |
| 664 | (progn | |
| 665 | (save-excursion | |
| 666 | (while (and (not (= count 0)) | |
| 667 | (not (eq (fortran-previous-statement) | |
| 668 | 'first-statement)) | |
| 669 | (not (looking-at | |
| 670 | "^[ \t0-9]*end\\b[ \t]*[^ \t=(a-z]"))) | |
| 671 | ; Keep local to subprogram | |
| 672 | (skip-chars-forward " \t0-9") | |
| 673 | (cond ((looking-at "if[ \t]*(") | |
| 674 | (save-excursion (if (or (looking-at ".*)[ | |
| 675 | \t]*then\\b[ \t]*[^ \t(=a-z0-9]") | |
| 676 | (let (then-test);multi-line if-then | |
| 677 | (while (and (= (forward-line 1) 0) | |
| 678 | ;search forward for then | |
| 679 | (or | |
| 680 | (looking-at " [^ 0\n]") | |
| 681 | ||
| 682 | (looking-at "\t[1-9]")) | |
| 683 | (not (setq | |
| 684 | then-test (looking-at | |
| 685 | ||
| 686 | ".*then\\b[ \t]*[^ \t(=a-z0-9]"))))) | |
| 687 | then-test)) | |
| 688 | (setq count (- count 1))))) | |
| 689 | ((looking-at "end[ \t]*if\\b") | |
| 690 | (setq count (+ count 1))))) | |
| 691 | (if (not (= count 0)) | |
| 692 | (setq message "No matching if.") | |
| 693 | (if (< (point) top-of-window) | |
| 694 | (setq message (concat "Matches " (buffer-substring | |
| 695 | (progn (beginning-of-line) | |
| 696 | (point)) | |
| 697 | (progn (end-of-line) | |
| 698 | (point))))) | |
| 699 | (setq matching-if (point))))) | |
| 700 | (if message | |
| 701 | (message message) | |
| 702 | (goto-char matching-if) | |
| 703 | (sit-for 1) | |
| 704 | (goto-char endif-point)))))) | |
| 705 | \f | |
| 706 | (defun fortran-indent-line () | |
| 707 | "Indents current fortran line based on its contents and on previous lines." | |
| 708 | (interactive) | |
| 709 | (let ((cfi (calculate-fortran-indent))) | |
| 710 | (save-excursion | |
| 711 | (beginning-of-line) | |
| 712 | (if (or (not (= cfi (fortran-current-line-indentation))) | |
| 713 | (and (re-search-forward "^[ \t]*[0-9]+" (+ (point) 4) t) | |
| 714 | (not (fortran-line-number-indented-correctly-p)))) | |
| 715 | (fortran-indent-to-column cfi) | |
| 716 | (beginning-of-line) | |
| 717 | (if (and (not (looking-at comment-line-start-skip)) | |
| 718 | (re-search-forward comment-start-skip | |
| 719 | (save-excursion (end-of-line) (point)) 'move)) | |
| 720 | (fortran-indent-comment)))) | |
| 721 | ;; Never leave point in left margin. | |
| 722 | (if (< (current-column) cfi) | |
| 723 | (move-to-column cfi)) | |
| 724 | (if fortran-blink-matching-if | |
| 725 | (fortran-blink-matching-if)))) | |
| 726 | ||
| 727 | (defun fortran-reindent-then-newline-and-indent () | |
| 728 | "Reindent the current fortran line, insert a newline and indent the newline. | |
| 729 | An abbrev before point is expanded if abbrev-mode is non-nil." | |
| 730 | (interactive) | |
| 731 | (if abbrev-mode (expand-abbrev)) | |
| 732 | (save-excursion | |
| 733 | (beginning-of-line) | |
| 734 | (skip-chars-forward " \t") | |
| 735 | (if (or (looking-at "[0-9]") ;Reindent only where it is most | |
| 736 | (looking-at "end") ;likely to be necessary | |
| 737 | (looking-at "else") | |
| 738 | (looking-at (regexp-quote fortran-continuation-string))) | |
| 739 | (fortran-indent-line))) | |
| 740 | (insert "\n") | |
| 741 | (fortran-indent-line)) | |
| 742 | ||
| 743 | (defun fortran-indent-subprogram () | |
| 744 | "Properly indents the Fortran subprogram which contains point." | |
| 745 | (interactive) | |
| 746 | (save-excursion | |
| 747 | (mark-fortran-subprogram) | |
| 748 | (message "Indenting subprogram...") | |
| 749 | (indent-region (point) (mark) nil)) | |
| 750 | (message "Indenting subprogram...done.")) | |
| 751 | ||
| 752 | (defun calculate-fortran-indent () | |
| 753 | "Calculates the fortran indent column based on previous lines." | |
| 754 | (let (icol first-statement (case-fold-search t) | |
| 755 | (fortran-minimum-statement-indent | |
| 756 | fortran-minimum-statement-indent)) | |
| 757 | (save-excursion | |
| 758 | (setq first-statement (fortran-previous-statement)) | |
| 759 | (if first-statement | |
| 760 | (setq icol fortran-minimum-statement-indent) | |
| 761 | (progn | |
| 762 | (if (= (point) (point-min)) | |
| 763 | (setq icol fortran-minimum-statement-indent) | |
| 764 | (setq icol (fortran-current-line-indentation))) | |
| 765 | (skip-chars-forward " \t0-9") | |
| 766 | (cond ((looking-at "if[ \t]*(") | |
| 767 | (if (or (looking-at ".*)[ \t]*then\\b[ \t]*[^ \t(=a-z0-9]") | |
| 768 | (let (then-test) ;multi-line if-then | |
| 769 | (while (and (= (forward-line 1) 0) | |
| 770 | ;search forward for then | |
| 771 | (or (looking-at " [^ 0\n]") | |
| 772 | (looking-at "\t[1-9]")) | |
| 773 | (not (setq then-test (looking-at | |
| 774 | ".*then\\b[ \t]*[^ \t(=a-z0-9]"))))) | |
| 775 | then-test)) | |
| 776 | (setq icol (+ icol fortran-if-indent)))) | |
| 777 | ((looking-at "\\(else\\|elseif\\)\\b") | |
| 778 | (setq icol (+ icol fortran-if-indent))) | |
| 779 | ((looking-at "do\\b") | |
| 780 | (setq icol (+ icol fortran-do-indent))) | |
| 781 | ((looking-at "end\\b[ \t]*[^ \t=(a-z]") | |
| 782 | ; Previous END resets indent to minimum | |
| 783 | (setq icol fortran-minimum-statement-indent)))))) | |
| 784 | (save-excursion | |
| 785 | (beginning-of-line) | |
| 786 | (cond ((looking-at "[ \t]*$")) | |
| 787 | ((looking-at comment-line-start-skip) | |
| 788 | (setq fortran-minimum-statement-indent 0) | |
| 789 | (cond ((eq fortran-comment-indent-style 'relative) | |
| 790 | (setq icol (+ icol fortran-comment-line-column))) | |
| 791 | ((eq fortran-comment-indent-style 'fixed) | |
| 792 | (setq icol fortran-comment-line-column)))) | |
| 793 | ((or (looking-at (concat "[ \t]*" | |
| 794 | (regexp-quote fortran-continuation-string))) | |
| 795 | (looking-at " [^ 0\n]") | |
| 796 | (looking-at "\t[1-9]")) | |
| 797 | (setq icol (+ icol fortran-continuation-indent))) | |
| 798 | (first-statement) | |
| 799 | ((and fortran-check-all-num-for-matching-do | |
| 800 | (looking-at "[ \t]*[0-9]+") | |
| 801 | (fortran-check-for-matching-do)) | |
| 802 | (setq icol (- icol fortran-do-indent))) | |
| 803 | (t | |
| 804 | (skip-chars-forward " \t0-9") | |
| 805 | (cond ((looking-at "end[ \t]*if\\b") | |
| 806 | (setq icol (- icol fortran-if-indent))) | |
| 807 | ((looking-at "\\(else\\|elseif\\)\\b") | |
| 808 | (setq icol (- icol fortran-if-indent))) | |
| 809 | ((and (looking-at "continue\\b") | |
| 810 | (fortran-check-for-matching-do)) | |
| 811 | (setq icol (- icol fortran-do-indent))) | |
| 812 | ((looking-at "end[ \t]*do\\b") | |
| 813 | (setq icol (- icol fortran-do-indent))) | |
| 814 | ((and (looking-at "end\\b[ \t]*[^ \t=(a-z]") | |
| 815 | (not (= icol fortran-minimum-statement-indent))) | |
| 816 | (message "Warning: `end' not in column %d. Probably\ | |
| 817 | an unclosed block." fortran-minimum-statement-indent)))))) | |
| 818 | (max fortran-minimum-statement-indent icol))) | |
| 819 | \f | |
| 820 | (defun fortran-current-line-indentation () | |
| 821 | "Indentation of current line, ignoring Fortran line number or continuation. | |
| 822 | This is the column position of the first non-whitespace character | |
| 823 | aside from the line number and/or column 5/8 line-continuation character. | |
| 824 | For comment lines, returns indentation of the first | |
| 825 | non-indentation text within the comment." | |
| 826 | (save-excursion | |
| 827 | (beginning-of-line) | |
| 828 | (cond ((looking-at comment-line-start-skip) | |
| 829 | (goto-char (match-end 0)) | |
| 830 | (skip-chars-forward | |
| 831 | (if (stringp fortran-comment-indent-char) | |
| 832 | fortran-comment-indent-char | |
| 833 | (char-to-string fortran-comment-indent-char)))) | |
| 834 | ((or (looking-at " [^ 0\n]") | |
| 835 | (looking-at "\t[1-9]")) | |
| 836 | (goto-char (match-end 0))) | |
| 837 | (t | |
| 838 | ;; Move past line number. | |
| 839 | (re-search-forward "^[ \t0-9]*" (+ (point) 4) t))) | |
| 840 | ;; Move past whitespace. | |
| 841 | (skip-chars-forward " \t") | |
| 842 | (current-column))) | |
| 843 | ||
| 844 | (defun fortran-indent-to-column (col) | |
| 845 | "Indents current line with spaces to column COL. | |
| 846 | notes: 1) A non-zero/non-blank character in column 5 indicates a continuation | |
| 847 | line, and this continuation character is retained on indentation; | |
| 848 | 2) If fortran-continuation-string is the first non-whitespace character, | |
| 849 | this is a continuation line; | |
| 850 | 3) A non-continuation line which has a number as the first | |
| 851 | non-whitespace character is a numbered line. | |
| 852 | 4) A tab followed by a digit indicates a continuation line." | |
| 853 | (save-excursion | |
| 854 | (beginning-of-line) | |
| 855 | (if (looking-at comment-line-start-skip) | |
| 856 | (if fortran-comment-indent-style | |
| 857 | (let ((char (if (stringp fortran-comment-indent-char) | |
| 858 | (aref fortran-comment-indent-char 0) | |
| 859 | fortran-comment-indent-char))) | |
| 860 | (goto-char (match-end 0)) | |
| 861 | (delete-horizontal-regexp (concat " \t" (char-to-string char))) | |
| 862 | (insert-char char (- col (current-column))))) | |
| 863 | (if (looking-at "\t[1-9]") | |
| 864 | (if fortran-tab-mode | |
| 865 | (goto-char (match-end 0)) | |
| 866 | (delete-char 2) | |
| 867 | (insert " ") | |
| 868 | (insert fortran-continuation-string)) | |
| 869 | (if (looking-at " [^ 0\n]") | |
| 870 | (if fortran-tab-mode | |
| 871 | (progn (delete-char 6) | |
| 872 | (insert "\t") | |
| 873 | (insert-char (fortran-numerical-continuation-char) 1)) | |
| 874 | (forward-char 6)) | |
| 875 | (delete-horizontal-space) | |
| 876 | ;; Put line number in columns 0-4 | |
| 877 | ;; or put continuation character in column 5. | |
| 878 | (cond ((eobp)) | |
| 879 | ((looking-at (regexp-quote fortran-continuation-string)) | |
| 880 | (if fortran-tab-mode | |
| 881 | (progn | |
| 882 | (indent-to fortran-minimum-statement-indent) | |
| 883 | (delete-char 1) | |
| 884 | (insert-char (fortran-numerical-continuation-char) 1)) | |
| 885 | (indent-to 5)) | |
| 886 | (forward-char 1)) | |
| 887 | ((looking-at "[0-9]+") | |
| 888 | (let ((extra-space (- 5 (- (match-end 0) (point))))) | |
| 889 | (if (< extra-space 0) | |
| 890 | (message "Warning: line number exceeds 5-digit limit.") | |
| 891 | (indent-to (min fortran-line-number-indent extra-space)))) | |
| 892 | (skip-chars-forward "0-9"))))) | |
| 893 | ;; Point is now after any continuation character or line number. | |
| 894 | ;; Put body of statement where specified. | |
| 895 | (delete-horizontal-space) | |
| 896 | (indent-to col) | |
| 897 | ;; Indent any comment following code on the same line. | |
| 898 | (if (and comment-start-skip | |
| 899 | (re-search-forward comment-start-skip | |
| 900 | (save-excursion (end-of-line) (point)) t)) | |
| 901 | (progn (goto-char (match-beginning 0)) | |
| 902 | (if (not (= (current-column) (fortran-comment-hook))) | |
| 903 | (progn (delete-horizontal-space) | |
| 904 | (indent-to (fortran-comment-hook))))))))) | |
| 905 | ||
| 906 | (defun fortran-line-number-indented-correctly-p () | |
| 907 | "Return t if current line's line number is correctly indented. | |
| 908 | Do not call if there is no line number." | |
| 909 | (save-excursion | |
| 910 | (beginning-of-line) | |
| 911 | (skip-chars-forward " \t") | |
| 912 | (and (<= (current-column) fortran-line-number-indent) | |
| 913 | (or (= (current-column) fortran-line-number-indent) | |
| 914 | (progn (skip-chars-forward "0-9") | |
| 915 | (= (current-column) 5)))))) | |
| 916 | ||
| 917 | (defun fortran-check-for-matching-do () | |
| 918 | "When called from a numbered statement, returns t if matching 'do' is found. | |
| 919 | Otherwise return a nil." | |
| 920 | (let (charnum | |
| 921 | (case-fold-search t)) | |
| 922 | (save-excursion | |
| 923 | (beginning-of-line) | |
| 924 | (if (looking-at "[ \t]*[0-9]+") | |
| 925 | (progn | |
| 926 | (skip-chars-forward " \t") | |
| 927 | (skip-chars-forward "0") ;skip past leading zeros | |
| 928 | (setq charnum (buffer-substring (point) | |
| 929 | (progn (skip-chars-forward "0-9") | |
| 930 | (point)))) | |
| 931 | (beginning-of-line) | |
| 932 | (and (re-search-backward | |
| 933 | (concat | |
| 934 | "\\(^[ \t0-9]*end\\b[ \t]*[^ \t=(a-z]\\)\\|\\(^[ \t0-9]*do[ \t]*0*" | |
| 935 | charnum "\\b\\)\\|\\(^[ \t]*0*" charnum "\\b\\)") | |
| 936 | nil t) | |
| 937 | (looking-at (concat "^[ \t0-9]*do[ \t]*0*" charnum)))))))) | |
| 938 | ||
| 939 | (defun fortran-analyze-file-format () | |
| 940 | "Return 0 if Fixed format is used, 1 if Tab formatting is used. | |
| 941 | Use fortran-tab-mode-default if no non-comment statements are found in the | |
| 942 | file before the end or the first fortran-analyze-depth lines." | |
| 943 | (save-excursion | |
| 944 | (goto-char (point-min)) | |
| 945 | (setq i 0) | |
| 946 | (while (not (or | |
| 947 | (eobp) | |
| 948 | (looking-at "\t") | |
| 949 | (looking-at " ") | |
| 950 | (> i fortran-analyze-depth))) | |
| 951 | (forward-line) | |
| 952 | (setq i (1+ i))) | |
| 953 | (cond | |
| 954 | ((looking-at "\t") 1) | |
| 955 | ((looking-at " ") 0) | |
| 956 | (fortran-tab-mode-default 1) | |
| 957 | (t 0)))) | |
| 958 | ||
| 959 | (defun fortran-tab-mode (arg) | |
| 960 | "Toggle fortran-tab-mode which indicates style of continuation lines. | |
| 961 | With no argument, toggle on/off the tabbing mode of continuation lines. | |
| 962 | If argument is a positive number, or non-nil if not a number, fortran-tab-mode | |
| 963 | is turned on. Otherwise | |
| 964 | If `fortran-tab-mode' is false" | |
| 965 | (interactive "P") | |
| 966 | (setq fortran-tab-mode | |
| 967 | (if (null arg) (not fortran-tab-mode) | |
| 968 | (if (numberp arg) | |
| 969 | (> (prefix-numeric-value arg) 0) | |
| 970 | (arg)))) | |
| 971 | (if fortran-tab-mode | |
| 972 | (fortran-setup-tab-format-style) | |
| 973 | (fortran-setup-fixed-format-style)) | |
| 974 | (set-buffer-modified-p (buffer-modified-p))) ;No-op, but updates mode line. | |
| 975 | ||
| 976 | (defun fortran-setup-tab-format-style () | |
| 977 | "Set up fortran mode to use the TAB-digit mode of continuation lines. | |
| 978 | Use the command fortran-tab-mode to toggle between this and fixed format style." | |
| 979 | (setq fortran-comment-line-column (max tab-width 6)) | |
| 980 | (setq fortran-minimum-statement-indent (max tab-width 6)) | |
| 981 | (setq indent-tabs-mode t) | |
| 982 | (setq fortran-column-ruler | |
| 983 | (concat | |
| 984 | "0 810 20 30 40 50 60 70\n" | |
| 985 | "[ ]| { | | | | | | | | | | | | |}\n")) | |
| 986 | (setq fortran-tab-mode-string " TAB-format") | |
| 987 | (set-buffer-modified-p (buffer-modified-p))) | |
| 988 | ||
| 989 | (defun fortran-setup-fixed-format-style () | |
| 990 | "Set up fortran mode to use the column 6 mode of continuation lines. | |
| 991 | Use the command fortran-tab-mode to toggle between this and tab | |
| 992 | character format style." | |
| 993 | (setq fortran-comment-line-column 6) | |
| 994 | (setq fortran-minimum-statement-indent 6) | |
| 995 | (setq indent-tabs-mode nil) | |
| 996 | (setq fortran-column-ruler | |
| 997 | (concat | |
| 998 | "0 4 6 10 20 30 40 50 60 70\n" | |
| 999 | "[ ]|{ | | | | | | | | | | | | |}\n")) | |
| 1000 | (setq fortran-tab-mode-string " Fixed-format") | |
| 1001 | (set-buffer-modified-p (buffer-modified-p))) | |
| 1002 | ||
| 1003 | (or (assq 'fortran-tab-mode minor-mode-alist) | |
| 1004 | (setq minor-mode-alist (cons | |
| 1005 | '(fortran-tab-mode-string fortran-tab-mode-string) | |
| 1006 | minor-mode-alist))) | |
| 1007 | ||
| 49116ac0 JB |
1008 | (provide 'fortran) |
| 1009 | ||
| 1a06eabd | 1010 | ;;; fortran.el ends here |