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e5167999 ER |
1 | ;;; fortran.el --- Fortran mode for GNU Emacs |
2 | ||
315aa1de DL |
3 | ;; Copyright (c) 1986, 93, 94, 95, 97, 98, 99, 2000 |
4 | ;; Free Software Foundation, Inc. | |
9750e079 | 5 | |
e5167999 | 6 | ;; Author: Michael D. Prange <prange@erl.mit.edu> |
7977773d | 7 | ;; Maintainer: Dave Love <fx@gnu.org> |
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 | |
b578f267 EN |
23 | ;; along with GNU Emacs; see the file COPYING. If not, write to the |
24 | ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
25 | ;; Boston, MA 02111-1307, USA. | |
e5167999 ER |
26 | |
27 | ;;; Commentary: | |
28 | ||
7977773d DL |
29 | ;; This mode is documented in the Emacs manual. |
30 | ;; | |
31 | ;; Note that it is for editing Fortran77 or Fortran90 fixed source | |
45cf60ae | 32 | ;; form. For editing Fortran 90 free format source, use `f90-mode' |
7977773d DL |
33 | ;; (f90.el). |
34 | ||
35 | ;;; History: | |
36 | ||
37 | ;; Fortran mode was upgraded by Stephen A. Wood (saw@cebaf.gov). | |
23029d77 JB |
38 | |
39 | ;; We acknowledge many contributions and valuable suggestions by | |
b8cbdf43 | 40 | ;; Lawrence R. Dodd, Ralf Fassel, Ralph Finch, Stephen Gildea, |
60db3594 | 41 | ;; Dr. Anil Gokhale, Ulrich Mueller, Mark Neale, Eric Prestemon, |
b8cbdf43 RS |
42 | ;; Gary Sabot and Richard Stallman. |
43 | ||
e5167999 ER |
44 | ;;; Code: |
45 | ||
45cf60ae | 46 | ;; Todo: |
1eb6bf70 | 47 | |
315aa1de | 48 | ;; * Tidy it all up (more)! |
1eb6bf70 DL |
49 | ;; * Implement insertion and removal of statement continuations in |
50 | ;; mixed f77/f90 style, with the first `&' past column 72 and the | |
51 | ;; second in column 6. | |
45cf60ae | 52 | ;; * Support any other extensions to f77 grokked by GNU Fortran. |
1eb6bf70 | 53 | |
fcad5199 RS |
54 | (defgroup fortran nil |
55 | "Fortran mode for Emacs" | |
e04196d3 | 56 | :link '(custom-manual "(emacs)Fortran") |
fcad5199 RS |
57 | :group 'languages) |
58 | ||
59 | (defgroup fortran-indent nil | |
60 | "Indentation variables in Fortran mode" | |
61 | :prefix "fortran-" | |
62 | :group 'fortran) | |
63 | ||
64 | (defgroup fortran-comment nil | |
65 | "Comment-handling variables in Fortran mode" | |
66 | :prefix "fortran-" | |
67 | :group 'fortran) | |
68 | ||
69 | ||
3dd63760 | 70 | ;;;###autoload |
fcad5199 | 71 | (defcustom fortran-tab-mode-default nil |
e80f2147 RS |
72 | "*Default tabbing/carriage control style for empty files in Fortran mode. |
73 | A value of t specifies tab-digit style of continuation control. | |
74 | A value of nil specifies that continuation lines are marked | |
fcad5199 RS |
75 | with a character in column 6." |
76 | :type 'boolean | |
77 | :group 'fortran-indent) | |
e80f2147 | 78 | |
e80f2147 | 79 | ;; Buffer local, used to display mode line. |
fcad5199 RS |
80 | (defcustom fortran-tab-mode-string nil |
81 | "String to appear in mode line when TAB format mode is on." | |
82 | :type '(choice (const nil) string) | |
83 | :group 'fortran-indent) | |
1eb6bf70 | 84 | (make-variable-buffer-local 'fortran-tab-mode-string) |
fcad5199 RS |
85 | |
86 | (defcustom fortran-do-indent 3 | |
87 | "*Extra indentation applied to DO blocks." | |
88 | :type 'integer | |
89 | :group 'fortran-indent) | |
90 | ||
91 | (defcustom fortran-if-indent 3 | |
92 | "*Extra indentation applied to IF blocks." | |
93 | :type 'integer | |
94 | :group 'fortran-indent) | |
95 | ||
96 | (defcustom fortran-structure-indent 3 | |
97 | "*Extra indentation applied to STRUCTURE, UNION, MAP and INTERFACE blocks." | |
98 | :type 'integer | |
99 | :group 'fortran-indent) | |
100 | ||
101 | (defcustom fortran-continuation-indent 5 | |
102 | "*Extra indentation applied to Fortran continuation lines." | |
103 | :type 'integer | |
104 | :group 'fortran-indent) | |
105 | ||
106 | (defcustom fortran-comment-indent-style 'fixed | |
7977773d DL |
107 | "*How to indent comments. |
108 | nil forces comment lines not to be touched, | |
23029d77 JB |
109 | 'fixed makes fixed comment indentation to `fortran-comment-line-extra-indent' |
110 | columns beyond `fortran-minimum-statement-indent-fixed' (for | |
111 | `indent-tabs-mode' of nil) or `fortran-minimum-statement-indent-tab' (for | |
112 | `indent-tabs-mode' of t), and 'relative indents to current | |
fcad5199 | 113 | Fortran indentation plus `fortran-comment-line-extra-indent'." |
1eb6bf70 | 114 | :type '(radio (const :tag "Untouched" nil) (const fixed) (const relative)) |
fcad5199 RS |
115 | :group 'fortran-indent) |
116 | ||
117 | (defcustom fortran-comment-line-extra-indent 0 | |
118 | "*Amount of extra indentation for text within full-line comments." | |
119 | :type 'integer | |
120 | :group 'fortran-indent | |
121 | :group 'fortran-comment) | |
122 | ||
68ca306c DL |
123 | (defcustom fortran-comment-line-start "C" |
124 | "*Delimiter inserted to start new full-line comment. | |
125 | You might want to change this to \"*\", for instance." | |
7dae727d | 126 | :version "21.1" |
68ca306c | 127 | :type 'string |
fcad5199 RS |
128 | :group 'fortran-comment) |
129 | ||
68ca306c DL |
130 | ;; This used to match preprocessor lines too, but that messes up |
131 | ;; filling and doesn't seem to be necessary. | |
132 | (defcustom fortran-comment-line-start-skip | |
8b31236d | 133 | "^[CcDd*!]\\(\\([^ \t\n]\\)\\2+\\)?[ \t]*" |
fcad5199 | 134 | "*Regexp to match the start of a full-line comment." |
7dae727d | 135 | :version "21.1" |
68ca306c | 136 | :type 'regexp |
fcad5199 RS |
137 | :group 'fortran-comment) |
138 | ||
139 | (defcustom fortran-minimum-statement-indent-fixed 6 | |
140 | "*Minimum statement indentation for fixed format continuation style." | |
141 | :type 'integer | |
142 | :group 'fortran-indent) | |
143 | ||
144 | (defcustom fortran-minimum-statement-indent-tab (max tab-width 6) | |
145 | "*Minimum statement indentation for TAB format continuation style." | |
146 | :type 'integer | |
147 | :group 'fortran-indent) | |
3dd63760 JB |
148 | |
149 | ;; Note that this is documented in the v18 manuals as being a string | |
150 | ;; of length one rather than a single character. | |
151 | ;; The code in this file accepts either format for compatibility. | |
fcad5199 | 152 | (defcustom fortran-comment-indent-char " " |
3dd63760 | 153 | "*Single-character string inserted for Fortran comment indentation. |
fcad5199 RS |
154 | Normally a space." |
155 | :type 'string | |
156 | :group 'fortran-comment) | |
3dd63760 | 157 | |
fcad5199 | 158 | (defcustom fortran-line-number-indent 1 |
3dd63760 | 159 | "*Maximum indentation for Fortran line numbers. |
fcad5199 RS |
160 | 5 means right-justify them within their five-column field." |
161 | :type 'integer | |
162 | :group 'fortran-indent) | |
3dd63760 | 163 | |
fcad5199 RS |
164 | (defcustom fortran-check-all-num-for-matching-do nil |
165 | "*Non-nil causes all numbered lines to be treated as possible DO loop ends." | |
166 | :type 'boolean | |
167 | :group 'fortran) | |
3dd63760 | 168 | |
fcad5199 | 169 | (defcustom fortran-blink-matching-if nil |
c5af0a18 | 170 | "*Non-nil causes \\[fortran-indent-line] on ENDIF statement to blink on matching IF. |
fcad5199 RS |
171 | Also, from an ENDDO statement blink on matching DO [WHILE] statement." |
172 | :type 'boolean | |
173 | :group 'fortran) | |
3dd63760 | 174 | |
fcad5199 | 175 | (defcustom fortran-continuation-string "$" |
b8cbdf43 | 176 | "*Single-character string used for Fortran continuation lines. |
3dd63760 JB |
177 | In fixed format continuation style, this character is inserted in |
178 | column 6 by \\[fortran-split-line] to begin a continuation line. | |
179 | Also, if \\[fortran-indent-line] finds this at the beginning of a line, it will | |
180 | convert the line into a continuation line of the appropriate style. | |
fcad5199 RS |
181 | Normally $." |
182 | :type 'string | |
183 | :group 'fortran) | |
3dd63760 | 184 | |
fcad5199 | 185 | (defcustom fortran-comment-region "c$$$" |
1eb6bf70 DL |
186 | "*String inserted by \\[fortran-comment-region] at start of each \ |
187 | line in region." | |
fcad5199 RS |
188 | :type 'string |
189 | :group 'fortran-comment) | |
3dd63760 | 190 | |
fcad5199 | 191 | (defcustom fortran-electric-line-number t |
1eb6bf70 DL |
192 | "*Non-nil causes line number digits to be moved to the correct \ |
193 | column as typed." | |
fcad5199 RS |
194 | :type 'boolean |
195 | :group 'fortran) | |
3dd63760 | 196 | |
23029d77 JB |
197 | (defvar fortran-column-ruler-fixed |
198 | "0 4 6 10 20 30 40 5\ | |
7977773d | 199 | 0 60 70\n\ |
f022dd89 SM |
200 | \[ ]|{ | | | | | | | | \ |
201 | \| | | | |}\n" | |
dc6579ac | 202 | "String displayed above current line by \\[fortran-column-ruler]. |
5a8d870b | 203 | This variable used in fixed format mode.") |
23029d77 JB |
204 | |
205 | (defvar fortran-column-ruler-tab | |
206 | "0 810 20 30 40 5\ | |
7977773d | 207 | 0 60 70\n\ |
f022dd89 SM |
208 | \[ ]| { | | | | | | | | \ |
209 | \| | | | |}\n" | |
dc6579ac | 210 | "String displayed above current line by \\[fortran-column-ruler]. |
5a8d870b | 211 | This variable used in TAB format mode.") |
3dd63760 | 212 | |
3dd63760 | 213 | (defvar fortran-analyze-depth 100 |
1eb6bf70 DL |
214 | "Number of lines to scan to determine whether to use fixed or TAB \ |
215 | format style.") | |
3dd63760 | 216 | |
fcad5199 | 217 | (defcustom fortran-break-before-delimiters t |
1eb6bf70 | 218 | "*Non-nil causes filling to break lines before delimiters." |
fcad5199 RS |
219 | :type 'boolean |
220 | :group 'fortran) | |
b8cbdf43 | 221 | |
315aa1de DL |
222 | (defvar fortran-mode-syntax-table |
223 | (let ((table (make-syntax-table))) | |
224 | ;; We might like `;' to be punctuation (g77 multi-statement | |
225 | ;; lines), but that screws abbrevs. | |
226 | (modify-syntax-entry ?\; "w" table) | |
227 | (modify-syntax-entry ?\r " " table) | |
228 | (modify-syntax-entry ?+ "." table) | |
229 | (modify-syntax-entry ?- "." table) | |
230 | (modify-syntax-entry ?= "." table) | |
231 | (modify-syntax-entry ?* "." table) | |
232 | (modify-syntax-entry ?/ "." table) | |
233 | (modify-syntax-entry ?\' "\"" table) | |
234 | (modify-syntax-entry ?\" "\"" table) | |
235 | (modify-syntax-entry ?\\ "\\" table) | |
236 | ;; This might be better as punctuation, as for C, but this way you | |
237 | ;; can treat floating-point numbers as symbols. | |
238 | (modify-syntax-entry ?. "_" table) ; e.g. `a.ne.b' | |
239 | (modify-syntax-entry ?_ "_" table) | |
240 | (modify-syntax-entry ?$ "_" table) ; esp. VMSisms | |
241 | (modify-syntax-entry ?\! "<" table) | |
242 | (modify-syntax-entry ?\n ">" table) | |
243 | table) | |
244 | "Syntax table in use in Fortran mode buffers.") | |
3dd63760 | 245 | |
f687a879 DL |
246 | ;; Comments are real pain in Fortran because there is no way to |
247 | ;; represent the standard comment syntax in an Emacs syntax table. | |
248 | ;; (We can do so for F90-style). Therefore an unmatched quote in a | |
249 | ;; standard comment will throw fontification off on the wrong track. | |
250 | ;; So we do syntactic fontification with regexps. | |
563f09b5 | 251 | |
315aa1de | 252 | (defvar fortran-font-lock-keywords-1 nil |
f3d4eb7b | 253 | "Subdued level highlighting for Fortran mode.") |
563f09b5 | 254 | |
315aa1de | 255 | (defvar fortran-font-lock-keywords-2 nil |
f408b027 SM |
256 | "Medium level highlighting for Fortran mode.") |
257 | ||
315aa1de | 258 | (defvar fortran-font-lock-keywords-3 nil |
f408b027 SM |
259 | "Gaudy level highlighting for Fortran mode.") |
260 | ||
315aa1de | 261 | (defvar fortran-font-lock-syntactic-keywords nil |
f687a879 DL |
262 | "`font-lock-syntactic-keywords' for Fortran. |
263 | These get fixed-format comments fontified.") | |
0f1057e9 | 264 | |
68ca306c | 265 | (let ((comment-chars "cd\\*") ; `d' for `debugging' comments |
37c3edc4 | 266 | (fortran-type-types |
6fd849f6 DL |
267 | (eval-when-compile |
268 | (let ((re (regexp-opt | |
269 | (let ((simple-types | |
270 | '("character" "byte" "integer" "logical" | |
271 | "none" "real" "complex" | |
272 | "double precision" "double complex")) | |
273 | (structured-types '("structure" "union" "map")) | |
274 | (other-types '("record" "dimension" | |
275 | "parameter" "common" "save" | |
276 | "external" "intrinsic" "data" | |
277 | "equivalence"))) | |
278 | (append | |
279 | (mapcar (lambda (x) (concat "implicit " x)) | |
280 | simple-types) | |
281 | simple-types | |
282 | (mapcar (lambda (x) (concat "end " x)) | |
283 | structured-types) | |
284 | structured-types | |
285 | other-types))))) | |
315aa1de DL |
286 | ;; In the optimized regexp above, replace spaces by a |
287 | ;; regexp for optional whitespace; regexp-opt would have | |
288 | ;; escaped that. | |
6fd849f6 | 289 | (mapconcat #'identity (split-string re) "[ \t]*")))) |
37c3edc4 DL |
290 | (fortran-keywords |
291 | (eval-when-compile | |
1eb6bf70 DL |
292 | (regexp-opt '("continue" "format" "end" "enddo" "if" "then" |
293 | "else" "endif" "elseif" "while" "inquire" "stop" | |
294 | "return" "include" "open" "close" "read" "write" | |
46d4d7bf | 295 | "format" "print" "select" "case" "cycle" "exit")))) |
37c3edc4 DL |
296 | (fortran-logicals |
297 | (eval-when-compile | |
1eb6bf70 | 298 | (regexp-opt '("and" "or" "not" "lt" "le" "eq" "ge" "gt" "ne" |
37c3edc4 | 299 | "true" "false"))))) |
f687a879 DL |
300 | (setq fortran-font-lock-syntactic-keywords |
301 | ;; Fixed format comments. (!-style handled normally.) | |
302 | (list | |
303 | (list (concat "^[" comment-chars "]") 0 '(11)) | |
315aa1de | 304 | (list (concat "^[^" comment-chars "\t\n]" ".\\{71\\}" |
f687a879 DL |
305 | "\\([^\n]+\\)") |
306 | 1 '(11)))) | |
37c3edc4 DL |
307 | (setq fortran-font-lock-keywords-1 |
308 | (list | |
37c3edc4 DL |
309 | ;; Program, subroutine and function declarations, plus calls. |
310 | (list (concat "\\<\\(block[ \t]*data\\|call\\|entry\\|function\\|" | |
311 | "program\\|subroutine\\)\\>[ \t]*\\(\\sw+\\)?") | |
312 | '(1 font-lock-keyword-face) | |
313 | '(2 font-lock-function-name-face nil t)))) | |
37c3edc4 DL |
314 | (setq fortran-font-lock-keywords-2 |
315 | (append fortran-font-lock-keywords-1 | |
316 | (list | |
37c3edc4 | 317 | ;; Fontify all type specifiers (must be first; see below). |
45cf60ae | 318 | (cons (concat "\\<\\(" fortran-type-types "\\)\\>") |
37c3edc4 | 319 | 'font-lock-type-face) |
37c3edc4 DL |
320 | ;; Fontify all builtin keywords (except logical, do |
321 | ;; and goto; see below). | |
322 | (concat "\\<\\(" fortran-keywords "\\)\\>") | |
37c3edc4 DL |
323 | ;; Fontify all builtin operators. |
324 | (concat "\\.\\(" fortran-logicals "\\)\\.") | |
37c3edc4 DL |
325 | ;; Fontify do/goto keywords and targets, and goto tags. |
326 | (list "\\<\\(do\\|go *to\\)\\>[ \t]*\\([0-9]+\\)?" | |
327 | '(1 font-lock-keyword-face) | |
328 | '(2 font-lock-constant-face nil t)) | |
329 | (cons "^ *\\([0-9]+\\)" 'font-lock-constant-face)))) | |
37c3edc4 DL |
330 | (setq fortran-font-lock-keywords-3 |
331 | (append | |
37c3edc4 DL |
332 | ;; The list `fortran-font-lock-keywords-1'. |
333 | fortran-font-lock-keywords-1 | |
37c3edc4 DL |
334 | ;; Fontify all type specifiers plus their declared items. |
335 | (list | |
336 | (list (concat "\\<\\(" fortran-type-types "\\)\\>[ \t(/]*\\(*\\)?") | |
337 | ;; Fontify the type specifier. | |
338 | '(1 font-lock-type-face) | |
339 | ;; Fontify each declaration item (or just the /.../ block name). | |
6fd849f6 | 340 | `(font-lock-match-c-style-declaration-item-and-skip-to-next |
37c3edc4 | 341 | ;; Start after any *(...) expression. |
6fd849f6 DL |
342 | (condition-case nil |
343 | (and (and (match-beginning ,(+ 2 (regexp-opt-depth | |
344 | fortran-type-types))) | |
345 | (forward-sexp)) | |
346 | (forward-sexp)) | |
347 | (error nil)) | |
37c3edc4 DL |
348 | ;; No need to clean up. |
349 | nil | |
350 | ;; Fontify as a variable name, functions are | |
351 | ;; fontified elsewhere. | |
352 | (1 font-lock-variable-name-face nil t)))) | |
37c3edc4 DL |
353 | ;; Things extra to `fortran-font-lock-keywords-3' |
354 | ;; (must be done first). | |
355 | (list | |
37c3edc4 DL |
356 | ;; Fontify goto-like `err=label'/`end=label' in read/write |
357 | ;; statements. | |
358 | '(", *\\(e\\(nd\\|rr\\)\\)\\> *\\(= *\\([0-9]+\\)\\)?" | |
359 | (1 font-lock-keyword-face) (4 font-lock-constant-face nil t)) | |
37c3edc4 DL |
360 | ;; Highlight standard continuation character and in a |
361 | ;; TAB-formatted line. | |
362 | '("^ \\([^ 0]\\)" 1 font-lock-string-face) | |
363 | '("^\t\\([1-9]\\)" 1 font-lock-string-face)) | |
68ca306c DL |
364 | (list |
365 | ;; cpp stuff (ugh) | |
366 | '("^# *[a-z]+" . font-lock-keyword-face)) | |
37c3edc4 DL |
367 | ;; The list `fortran-font-lock-keywords-2' less that for types |
368 | ;; (see above). | |
369 | (cdr (nthcdr (length fortran-font-lock-keywords-1) | |
370 | fortran-font-lock-keywords-2))))) | |
f022dd89 | 371 | |
f3d4eb7b SM |
372 | (defvar fortran-font-lock-keywords fortran-font-lock-keywords-1 |
373 | "Default expressions to highlight in Fortran mode.") | |
60db3594 | 374 | \f |
9645c179 | 375 | (defvar fortran-imenu-generic-expression |
240e9cda DL |
376 | ;; These patterns could be confused by sequence nos. in cols 72+ and |
377 | ;; don't allow continuations everywhere. | |
7977773d DL |
378 | (list |
379 | (list | |
380 | nil | |
a8189dfe DL |
381 | ;; [This will be fooled by `end function' allowed by G77. Also, |
382 | ;; it assumes sensible whitespace is employed.] | |
383 | (concat | |
384 | ;; leading whitespace: | |
385 | "^\\s-+\\(" | |
386 | ;; function declaration with optional type, e.g. `real', | |
387 | ;; `real*4', character(*), `double precision': | |
388 | "\\(\\sw\\|\\s-\\|[*()+]\\)*" | |
389 | "\\<function\\|subroutine\\|entry\\|block\\s-*data\\|program\\)" | |
390 | ;; Possible statement continuation: | |
391 | "[ \t" fortran-continuation-string "]+" | |
392 | ;; Variable to index: | |
393 | "\\(\\sw+\\)") | |
7977773d DL |
394 | 3) |
395 | ;; Un-named block data | |
396 | (list nil "^\\s-+\\(block\\s-*data\\)\\s-*$" 1)) | |
45cf60ae | 397 | "Imenu generic expression for `imenu-default-create-index-function'.") |
f408b027 | 398 | |
7a7db8e5 | 399 | (defvar fortran-mode-map |
315aa1de DL |
400 | (let ((map (make-sparse-keymap))) |
401 | (define-key map ";" 'fortran-abbrev-start) | |
402 | (define-key map "\C-c;" 'fortran-comment-region) | |
403 | (define-key map "\M-;" 'fortran-indent-comment) | |
404 | (define-key map "\M-\n" 'fortran-split-line) | |
405 | (define-key map "\M-\C-q" 'fortran-indent-subprogram) | |
406 | (define-key map "\C-c\C-w" 'fortran-window-create-momentarily) | |
407 | (define-key map "\C-c\C-r" 'fortran-column-ruler) | |
408 | (define-key map "\C-c\C-p" 'fortran-previous-statement) | |
409 | (define-key map "\C-c\C-n" 'fortran-next-statement) | |
410 | (define-key map "\C-c\C-d" 'fortran-join-line) ; like f90 | |
411 | (define-key map "\M-^" 'fortran-join-line) ; subvert delete-indentation | |
412 | (define-key map "0" 'fortran-electric-line-number) | |
413 | (define-key map "1" 'fortran-electric-line-number) | |
414 | (define-key map "2" 'fortran-electric-line-number) | |
415 | (define-key map "3" 'fortran-electric-line-number) | |
416 | (define-key map "4" 'fortran-electric-line-number) | |
417 | (define-key map "5" 'fortran-electric-line-number) | |
418 | (define-key map "6" 'fortran-electric-line-number) | |
419 | (define-key map "7" 'fortran-electric-line-number) | |
420 | (define-key map "8" 'fortran-electric-line-number) | |
421 | (define-key map "9" 'fortran-electric-line-number) | |
7a7db8e5 DL |
422 | |
423 | ;; Menu | |
562e00da DL |
424 | (easy-menu-define |
425 | fortran-mode-menu map "" | |
426 | `("Fortran" | |
427 | ["Manual" (info "(emacs)Fortran")] | |
428 | ("Customization" | |
429 | ,(custom-menu-create 'fortran) | |
430 | ["Set" Custom-set t] | |
431 | ["Save" Custom-save t] | |
432 | ["Reset to Current" Custom-reset-current t] | |
433 | ["Reset to Saved" Custom-reset-saved t] | |
434 | ["Reset to Standard Settings" Custom-reset-standard t]) | |
435 | "----" | |
436 | ["Toggle Auto-fill" auto-fill-mode :style toggle | |
437 | :selected auto-fill-function] | |
438 | ["Toggle abbrev-mode" abbrev-mode :style toggle :selected abbrev-mode] | |
439 | "----" | |
440 | ["Comment-out Region" fortran-comment-region mark-active] | |
441 | ["Uncomment-out region" | |
442 | (fortran-comment-region (region-beginning) (region-end) 1) | |
443 | mark-active] | |
444 | ["Indent Region" indent-region mark-active] | |
445 | ["Indent Subprogram" fortran-indent-subprogram t] | |
446 | "----" | |
447 | ["Beginning of Subprogram" fortran-beginning-of-subprogram t] | |
448 | ["End of Subprogram" fortran-end-of-subprogram t] | |
449 | ("Mark" | |
450 | ["Subprogram" mark-defun t] | |
451 | ["IF Block" fortran-mark-if t] | |
452 | ["DO Block" fortran-mark-do t]) | |
453 | ["Narrow to Subprogram" narrow-to-defun t] | |
454 | ["Widen" widen t] | |
455 | "----" | |
456 | ["Temporary column ruler" fortran-column-ruler t] | |
457 | ["72-column window" fortran-window-create t] | |
458 | ["Full Width Window" | |
459 | (enlarge-window-horizontally (- (frame-width) (window-width))) | |
460 | (< (window-width) (frame-width))] | |
461 | ["Momentary 72-column window" fortran-window-create-momentarily t] | |
462 | "----" | |
463 | ["Break Line at Point" fortran-split-line t] | |
464 | ["Join Line" fortran-join-line t] | |
465 | ["Fill Statement/Comment" fill-paragraph t] | |
466 | "----" | |
467 | ["Add imenu menu" | |
468 | imenu-add-menubar-index (not (and (boundp 'imenu--index-alist) | |
469 | imenu--index-alist))])) | |
315aa1de | 470 | map) |
b8cbdf43 | 471 | "Keymap used in Fortran mode.") |
3dd63760 | 472 | \f |
7a7db8e5 | 473 | (defvar fortran-mode-abbrev-table |
3dd63760 JB |
474 | (let ((ac abbrevs-changed)) |
475 | (define-abbrev-table 'fortran-mode-abbrev-table ()) | |
476 | (define-abbrev fortran-mode-abbrev-table ";au" "automatic" nil) | |
477 | (define-abbrev fortran-mode-abbrev-table ";b" "byte" nil) | |
b8cbdf43 | 478 | (define-abbrev fortran-mode-abbrev-table ";bd" "block data" nil) |
3dd63760 JB |
479 | (define-abbrev fortran-mode-abbrev-table ";ch" "character" nil) |
480 | (define-abbrev fortran-mode-abbrev-table ";cl" "close" nil) | |
481 | (define-abbrev fortran-mode-abbrev-table ";c" "continue" nil) | |
482 | (define-abbrev fortran-mode-abbrev-table ";cm" "common" nil) | |
483 | (define-abbrev fortran-mode-abbrev-table ";cx" "complex" nil) | |
484 | (define-abbrev fortran-mode-abbrev-table ";df" "define" nil) | |
485 | (define-abbrev fortran-mode-abbrev-table ";di" "dimension" nil) | |
486 | (define-abbrev fortran-mode-abbrev-table ";do" "double" nil) | |
487 | (define-abbrev fortran-mode-abbrev-table ";dc" "double complex" nil) | |
488 | (define-abbrev fortran-mode-abbrev-table ";dp" "double precision" nil) | |
489 | (define-abbrev fortran-mode-abbrev-table ";dw" "do while" nil) | |
490 | (define-abbrev fortran-mode-abbrev-table ";e" "else" nil) | |
491 | (define-abbrev fortran-mode-abbrev-table ";ed" "enddo" nil) | |
492 | (define-abbrev fortran-mode-abbrev-table ";el" "elseif" nil) | |
493 | (define-abbrev fortran-mode-abbrev-table ";en" "endif" nil) | |
494 | (define-abbrev fortran-mode-abbrev-table ";eq" "equivalence" nil) | |
b8cbdf43 | 495 | (define-abbrev fortran-mode-abbrev-table ";ew" "endwhere" nil) |
3dd63760 JB |
496 | (define-abbrev fortran-mode-abbrev-table ";ex" "external" nil) |
497 | (define-abbrev fortran-mode-abbrev-table ";ey" "entry" nil) | |
498 | (define-abbrev fortran-mode-abbrev-table ";f" "format" nil) | |
499 | (define-abbrev fortran-mode-abbrev-table ";fa" ".false." nil) | |
500 | (define-abbrev fortran-mode-abbrev-table ";fu" "function" nil) | |
501 | (define-abbrev fortran-mode-abbrev-table ";g" "goto" nil) | |
502 | (define-abbrev fortran-mode-abbrev-table ";im" "implicit" nil) | |
503 | (define-abbrev fortran-mode-abbrev-table ";ib" "implicit byte" nil) | |
504 | (define-abbrev fortran-mode-abbrev-table ";ic" "implicit complex" nil) | |
505 | (define-abbrev fortran-mode-abbrev-table ";ich" "implicit character" nil) | |
506 | (define-abbrev fortran-mode-abbrev-table ";ii" "implicit integer" nil) | |
507 | (define-abbrev fortran-mode-abbrev-table ";il" "implicit logical" nil) | |
508 | (define-abbrev fortran-mode-abbrev-table ";ir" "implicit real" nil) | |
509 | (define-abbrev fortran-mode-abbrev-table ";inc" "include" nil) | |
510 | (define-abbrev fortran-mode-abbrev-table ";in" "integer" nil) | |
511 | (define-abbrev fortran-mode-abbrev-table ";intr" "intrinsic" nil) | |
512 | (define-abbrev fortran-mode-abbrev-table ";l" "logical" nil) | |
513 | (define-abbrev fortran-mode-abbrev-table ";n" "namelist" nil) | |
514 | (define-abbrev fortran-mode-abbrev-table ";o" "open" nil) ; was ;op | |
515 | (define-abbrev fortran-mode-abbrev-table ";pa" "parameter" nil) | |
516 | (define-abbrev fortran-mode-abbrev-table ";pr" "program" nil) | |
517 | (define-abbrev fortran-mode-abbrev-table ";ps" "pause" nil) | |
518 | (define-abbrev fortran-mode-abbrev-table ";p" "print" nil) | |
519 | (define-abbrev fortran-mode-abbrev-table ";rc" "record" nil) | |
520 | (define-abbrev fortran-mode-abbrev-table ";re" "real" nil) | |
521 | (define-abbrev fortran-mode-abbrev-table ";r" "read" nil) | |
522 | (define-abbrev fortran-mode-abbrev-table ";rt" "return" nil) | |
523 | (define-abbrev fortran-mode-abbrev-table ";rw" "rewind" nil) | |
524 | (define-abbrev fortran-mode-abbrev-table ";s" "stop" nil) | |
525 | (define-abbrev fortran-mode-abbrev-table ";sa" "save" nil) | |
526 | (define-abbrev fortran-mode-abbrev-table ";st" "structure" nil) | |
527 | (define-abbrev fortran-mode-abbrev-table ";sc" "static" nil) | |
528 | (define-abbrev fortran-mode-abbrev-table ";su" "subroutine" nil) | |
529 | (define-abbrev fortran-mode-abbrev-table ";tr" ".true." nil) | |
530 | (define-abbrev fortran-mode-abbrev-table ";ty" "type" nil) | |
531 | (define-abbrev fortran-mode-abbrev-table ";vo" "volatile" nil) | |
532 | (define-abbrev fortran-mode-abbrev-table ";w" "write" nil) | |
b8cbdf43 | 533 | (define-abbrev fortran-mode-abbrev-table ";wh" "where" nil) |
7a7db8e5 DL |
534 | (setq abbrevs-changed ac) |
535 | fortran-mode-abbrev-table)) | |
3dd63760 | 536 | \f |
1eb6bf70 DL |
537 | (eval-when-compile ; silence compiler |
538 | (defvar imenu-case-fold-search) | |
539 | (defvar imenu-syntax-alist)) | |
7977773d | 540 | |
7dae727d DL |
541 | (defcustom fortran-mode-hook nil |
542 | "Hook run by Fortran mode." | |
543 | :type 'hook | |
544 | :group 'fortran) | |
545 | ||
3dd63760 JB |
546 | ;;;###autoload |
547 | (defun fortran-mode () | |
b8cbdf43 | 548 | "Major mode for editing Fortran code. |
60db3594 | 549 | \\[fortran-indent-line] indents the current Fortran line correctly. |
b8cbdf43 | 550 | DO statements must not share a common CONTINUE. |
3dd63760 | 551 | |
1eb6bf70 DL |
552 | Type ;? or ;\\[help-command] to display a list of built-in abbrevs for |
553 | Fortran keywords. | |
3dd63760 JB |
554 | |
555 | Key definitions: | |
556 | \\{fortran-mode-map} | |
557 | ||
558 | Variables controlling indentation style and extra features: | |
559 | ||
45cf60ae | 560 | `comment-start' |
315aa1de DL |
561 | If you want to use comments starting with `!', |
562 | set this to the string \"!\". | |
45cf60ae | 563 | `fortran-do-indent' |
3dd63760 | 564 | Extra indentation within do blocks. (default 3) |
45cf60ae | 565 | `fortran-if-indent' |
3dd63760 | 566 | Extra indentation within if blocks. (default 3) |
45cf60ae | 567 | `fortran-structure-indent' |
5a8d870b RS |
568 | Extra indentation within structure, union, map and interface blocks. |
569 | (default 3) | |
45cf60ae | 570 | `fortran-continuation-indent' |
b8cbdf43 | 571 | Extra indentation applied to continuation statements. (default 5) |
45cf60ae DL |
572 | `fortran-comment-line-extra-indent' |
573 | Amount of extra indentation for text within full-line comments. (default 0) | |
574 | `fortran-comment-indent-style' | |
3dd63760 | 575 | nil means don't change indentation of text in full-line comments, |
23029d77 JB |
576 | fixed means indent that text at `fortran-comment-line-extra-indent' beyond |
577 | the value of `fortran-minimum-statement-indent-fixed' (for fixed | |
578 | format continuation style) or `fortran-minimum-statement-indent-tab' | |
579 | (for TAB format continuation style). | |
580 | relative means indent at `fortran-comment-line-extra-indent' beyond the | |
3dd63760 JB |
581 | indentation for a line of code. |
582 | (default 'fixed) | |
45cf60ae | 583 | `fortran-comment-indent-char' |
b8cbdf43 | 584 | Single-character string to be inserted instead of space for |
3dd63760 | 585 | full-line comment indentation. (default \" \") |
45cf60ae DL |
586 | `fortran-minimum-statement-indent-fixed' |
587 | Minimum indentation for Fortran statements in fixed format mode. (def.6) | |
588 | `fortran-minimum-statement-indent-tab' | |
589 | Minimum indentation for Fortran statements in TAB format mode. (default 9) | |
590 | `fortran-line-number-indent' | |
3dd63760 JB |
591 | Maximum indentation for line numbers. A line number will get |
592 | less than this much indentation if necessary to avoid reaching | |
593 | column 5. (default 1) | |
45cf60ae | 594 | `fortran-check-all-num-for-matching-do' |
b8cbdf43 | 595 | Non-nil causes all numbered lines to be treated as possible \"continue\" |
3dd63760 | 596 | statements. (default nil) |
45cf60ae | 597 | `fortran-blink-matching-if' |
c5af0a18 RS |
598 | Non-nil causes \\[fortran-indent-line] on an ENDIF statement to blink on |
599 | matching IF. Also, from an ENDDO statement, blink on matching DO [WHILE] | |
600 | statement. (default nil) | |
45cf60ae | 601 | `fortran-continuation-string' |
3dd63760 JB |
602 | Single-character string to be inserted in column 5 of a continuation |
603 | line. (default \"$\") | |
45cf60ae | 604 | `fortran-comment-region' |
60db3594 | 605 | String inserted by \\[fortran-comment-region] at start of each line in |
3dd63760 | 606 | region. (default \"c$$$\") |
45cf60ae | 607 | `fortran-electric-line-number' |
60db3594 | 608 | Non-nil causes line number digits to be moved to the correct column |
3dd63760 | 609 | as typed. (default t) |
45cf60ae | 610 | `fortran-break-before-delimiters' |
7dae727d | 611 | Non-nil causes lines to be broken before delimiters. |
b8cbdf43 | 612 | (default t) |
3dd63760 | 613 | |
b8cbdf43 | 614 | Turning on Fortran mode calls the value of the variable `fortran-mode-hook' |
3dd63760 JB |
615 | with no args, if that value is non-nil." |
616 | (interactive) | |
617 | (kill-all-local-variables) | |
3dd63760 JB |
618 | (setq local-abbrev-table fortran-mode-abbrev-table) |
619 | (set-syntax-table fortran-mode-syntax-table) | |
f3d4eb7b | 620 | ;; Font Lock mode support. |
f408b027 SM |
621 | (make-local-variable 'font-lock-defaults) |
622 | (setq font-lock-defaults '((fortran-font-lock-keywords | |
623 | fortran-font-lock-keywords-1 | |
624 | fortran-font-lock-keywords-2 | |
625 | fortran-font-lock-keywords-3) | |
f687a879 | 626 | nil t ((?/ . "$/") ("_$" . "w")) |
7dae727d | 627 | fortran-beginning-of-subprogram)) |
f687a879 DL |
628 | (set (make-local-variable 'font-lock-syntactic-keywords) |
629 | fortran-font-lock-syntactic-keywords) | |
b8cbdf43 RS |
630 | (make-local-variable 'fortran-break-before-delimiters) |
631 | (setq fortran-break-before-delimiters t) | |
3dd63760 JB |
632 | (make-local-variable 'indent-line-function) |
633 | (setq indent-line-function 'fortran-indent-line) | |
e41b2db1 | 634 | (make-local-variable 'comment-indent-function) |
315aa1de | 635 | (setq comment-indent-function 'fortran-comment-indent) |
3dd63760 JB |
636 | (make-local-variable 'comment-start-skip) |
637 | (setq comment-start-skip "![ \t]*") | |
638 | (make-local-variable 'comment-start) | |
8b31236d | 639 | (setq comment-start fortran-comment-line-start) |
3dd63760 JB |
640 | (make-local-variable 'require-final-newline) |
641 | (setq require-final-newline t) | |
642 | (make-local-variable 'abbrev-all-caps) | |
643 | (setq abbrev-all-caps t) | |
644 | (make-local-variable 'indent-tabs-mode) | |
645 | (setq indent-tabs-mode nil) | |
23029d77 | 646 | ;;;(setq abbrev-mode t) ; ?? (abbrev-mode 1) instead?? |
1eb6bf70 | 647 | (set (make-local-variable 'fill-column) 72) |
3dd63760 JB |
648 | (use-local-map fortran-mode-map) |
649 | (setq mode-name "Fortran") | |
650 | (setq major-mode 'fortran-mode) | |
23029d77 JB |
651 | (make-local-variable 'fortran-comment-line-extra-indent) |
652 | (make-local-variable 'fortran-minimum-statement-indent-fixed) | |
653 | (make-local-variable 'fortran-minimum-statement-indent-tab) | |
654 | (make-local-variable 'fortran-column-ruler-fixed) | |
45cf60ae | 655 | (make-local-variable 'fortran-column-ruler-tab) |
23029d77 JB |
656 | (setq fortran-tab-mode-string " TAB-format") |
657 | (setq indent-tabs-mode (fortran-analyze-file-format)) | |
7977773d | 658 | (setq imenu-case-fold-search t) |
9645c179 | 659 | (setq imenu-generic-expression fortran-imenu-generic-expression) |
7977773d | 660 | (setq imenu-syntax-alist '(("_$" . "w"))) |
1eb6bf70 | 661 | (set (make-local-variable 'fill-paragraph-function) 'fortran-fill-paragraph) |
7aabd23e | 662 | (set (make-local-variable 'normal-auto-fill-function) 'fortran-auto-fill) |
1eb6bf70 DL |
663 | (set (make-local-variable 'indent-line-function) 'fortran-indent-line) |
664 | (set (make-local-variable 'indent-region-function) | |
665 | (lambda (start end) | |
666 | (let (fortran-blink-matching-if ; avoid blinking delay | |
667 | indent-region-function) | |
668 | (indent-region start end nil)))) | |
26ef1c87 DL |
669 | (set (make-local-variable 'beginning-of-defun-function) |
670 | #'fortran-beginning-of-subprogram) | |
671 | (set (make-local-variable 'end-of-defun-function) | |
672 | #'fortran-end-of-subprogram) | |
68ca306c DL |
673 | (set (make-local-variable 'add-log-current-defun-function) |
674 | #'fortran-current-defun) | |
315aa1de | 675 | (set (make-local-variable 'dabbrev-case-fold-search) 'case-fold-search) |
3dd63760 JB |
676 | (run-hooks 'fortran-mode-hook)) |
677 | \f | |
315aa1de | 678 | (defsubst fortran-comment-indent () |
3dd63760 JB |
679 | (save-excursion |
680 | (skip-chars-backward " \t") | |
681 | (max (+ 1 (current-column)) | |
682 | comment-column))) | |
683 | ||
684 | (defun fortran-indent-comment () | |
685 | "Align or create comment on current line. | |
686 | Existing comments of all types are recognized and aligned. | |
687 | If the line has no comment, a side-by-side comment is inserted and aligned | |
7977773d | 688 | if the value of `comment-start' is not nil. |
3dd63760 JB |
689 | Otherwise, a separate-line comment is inserted, on this line |
690 | or on a new line inserted before this line if this line is not blank." | |
691 | (interactive) | |
692 | (beginning-of-line) | |
693 | ;; Recognize existing comments of either kind. | |
7dae727d | 694 | (cond ((looking-at fortran-comment-line-start-skip) |
3dd63760 | 695 | (fortran-indent-line)) |
23029d77 | 696 | ((fortran-find-comment-start-skip) ; catches any inline comment and |
b8cbdf43 RS |
697 | ; leaves point after comment-start-skip |
698 | (if comment-start-skip | |
699 | (progn (goto-char (match-beginning 0)) | |
315aa1de DL |
700 | (if (not (= (current-column) |
701 | (fortran-comment-indent))) | |
b8cbdf43 | 702 | (progn (delete-horizontal-space) |
315aa1de | 703 | (indent-to (fortran-comment-indent))))) |
b8cbdf43 | 704 | (end-of-line))) ; otherwise goto end of line or sth else? |
3dd63760 JB |
705 | ;; No existing comment. |
706 | ;; If side-by-side comments are defined, insert one, | |
707 | ;; unless line is now blank. | |
708 | ((and comment-start (not (looking-at "^[ \t]*$"))) | |
709 | (end-of-line) | |
710 | (delete-horizontal-space) | |
315aa1de | 711 | (indent-to (fortran-comment-indent)) |
3dd63760 JB |
712 | (insert comment-start)) |
713 | ;; Else insert separate-line comment, making a new line if nec. | |
714 | (t | |
715 | (if (looking-at "^[ \t]*$") | |
716 | (delete-horizontal-space) | |
717 | (beginning-of-line) | |
7dae727d | 718 | (insert ?\n) |
3dd63760 | 719 | (forward-char -1)) |
7dae727d | 720 | (insert fortran-comment-line-start) |
3dd63760 JB |
721 | (insert-char (if (stringp fortran-comment-indent-char) |
722 | (aref fortran-comment-indent-char 0) | |
b8cbdf43 | 723 | fortran-comment-indent-char) |
1eb6bf70 | 724 | (- (fortran-calculate-indent) (current-column)))))) |
3dd63760 JB |
725 | |
726 | (defun fortran-comment-region (beg-region end-region arg) | |
727 | "Comments every line in the region. | |
7977773d | 728 | Puts `fortran-comment-region' at the beginning of every line in the region. |
60db3594 | 729 | BEG-REGION and END-REGION are args which specify the region boundaries. |
3dd63760 JB |
730 | With non-nil ARG, uncomments the region." |
731 | (interactive "*r\nP") | |
b937fd1e | 732 | (let ((end-region-mark (copy-marker end-region)) |
315aa1de | 733 | (save-point (point-marker))) |
3dd63760 JB |
734 | (goto-char beg-region) |
735 | (beginning-of-line) | |
736 | (if (not arg) ;comment the region | |
737 | (progn (insert fortran-comment-region) | |
738 | (while (and (= (forward-line 1) 0) | |
739 | (< (point) end-region-mark)) | |
740 | (insert fortran-comment-region))) | |
741 | (let ((com (regexp-quote fortran-comment-region))) ;uncomment the region | |
742 | (if (looking-at com) | |
743 | (delete-region (point) (match-end 0))) | |
744 | (while (and (= (forward-line 1) 0) | |
745 | (< (point) end-region-mark)) | |
746 | (if (looking-at com) | |
747 | (delete-region (point) (match-end 0)))))) | |
748 | (goto-char save-point) | |
749 | (set-marker end-region-mark nil) | |
750 | (set-marker save-point nil))) | |
751 | \f | |
752 | (defun fortran-abbrev-start () | |
60db3594 | 753 | "Typing ;\\[help-command] or ;? lists all the Fortran abbrevs. |
3dd63760 JB |
754 | Any other key combination is executed normally." |
755 | (interactive) | |
756 | (let (c) | |
757 | (insert last-command-char) | |
d654e8ce RS |
758 | (if (or (eq (setq c (read-event)) ??) ;insert char if not equal to `?' |
759 | (eq c help-char)) | |
3dd63760 | 760 | (fortran-abbrev-help) |
dbc4e1c1 | 761 | (setq unread-command-events (list c))))) |
3dd63760 JB |
762 | |
763 | (defun fortran-abbrev-help () | |
764 | "List the currently defined abbrevs in Fortran mode." | |
765 | (interactive) | |
766 | (message "Listing abbrev table...") | |
e80f2147 | 767 | (display-buffer (fortran-prepare-abbrev-list-buffer)) |
3dd63760 JB |
768 | (message "Listing abbrev table...done")) |
769 | ||
e80f2147 RS |
770 | (defun fortran-prepare-abbrev-list-buffer () |
771 | (save-excursion | |
772 | (set-buffer (get-buffer-create "*Abbrevs*")) | |
773 | (erase-buffer) | |
4632a893 | 774 | (insert-abbrev-table-description 'fortran-mode-abbrev-table t) |
e80f2147 RS |
775 | (goto-char (point-min)) |
776 | (set-buffer-modified-p nil) | |
777 | (edit-abbrevs-mode)) | |
778 | (get-buffer-create "*Abbrevs*")) | |
779 | ||
3dd63760 | 780 | (defun fortran-column-ruler () |
7977773d | 781 | "Insert a column ruler momentarily above current line, till next keystroke. |
5a8d870b RS |
782 | The ruler is defined by the value of `fortran-column-ruler-fixed' when in fixed |
783 | format mode, and `fortran-column-ruler-tab' when in TAB format mode. | |
3dd63760 JB |
784 | The key typed is executed unless it is SPC." |
785 | (interactive) | |
60db3594 | 786 | (momentary-string-display |
23029d77 JB |
787 | (if indent-tabs-mode |
788 | fortran-column-ruler-tab | |
789 | fortran-column-ruler-fixed) | |
790 | (save-excursion | |
60db3594 | 791 | (beginning-of-line) |
23029d77 JB |
792 | (if (eq (window-start (selected-window)) |
793 | (window-point (selected-window))) | |
7a7db8e5 | 794 | (line-beginning-position 2) |
23029d77 | 795 | (point))) |
3dd63760 JB |
796 | nil "Type SPC or any command to erase ruler.")) |
797 | ||
798 | (defun fortran-window-create () | |
7977773d | 799 | "Make the window 72 columns wide. |
fe668515 | 800 | See also `fortran-window-create-momentarily'." |
3dd63760 JB |
801 | (interactive) |
802 | (condition-case error | |
803 | (progn | |
804 | (let ((window-min-width 2)) | |
23029d77 JB |
805 | (if (< (window-width) (frame-width)) |
806 | (enlarge-window-horizontally (- (frame-width) | |
3dd63760 | 807 | (window-width) 1))) |
aa9305c9 DL |
808 | (let* ((window-edges (window-edges)) |
809 | (scroll-bar-width (- (nth 2 window-edges) | |
810 | (car window-edges) | |
811 | (window-width)))) | |
812 | (split-window-horizontally (+ 72 scroll-bar-width))) | |
3dd63760 JB |
813 | (other-window 1) |
814 | (switch-to-buffer " fortran-window-extra" t) | |
815 | (select-window (previous-window)))) | |
e8af40ee | 816 | (error (message "No room for Fortran window") |
3dd63760 JB |
817 | 'error))) |
818 | ||
819 | (defun fortran-window-create-momentarily (&optional arg) | |
7977773d | 820 | "Momentarily make the window 72 columns wide. |
3dd63760 | 821 | Optional ARG non-nil and non-unity disables the momentary feature. |
fe668515 | 822 | See also `fortran-window-create'." |
3dd63760 JB |
823 | (interactive "p") |
824 | (if (or (not arg) | |
825 | (= arg 1)) | |
826 | (save-window-excursion | |
827 | (if (not (equal (fortran-window-create) 'error)) | |
828 | (progn (message "Type SPC to continue editing.") | |
d654e8ce | 829 | (let ((char (read-event))) |
3dd63760 | 830 | (or (equal char (string-to-char " ")) |
dbc4e1c1 | 831 | (setq unread-command-events (list char))))))) |
3dd63760 JB |
832 | (fortran-window-create))) |
833 | ||
834 | (defun fortran-split-line () | |
835 | "Break line at point and insert continuation marker and alignment." | |
836 | (interactive) | |
837 | (delete-horizontal-space) | |
7dae727d DL |
838 | (if (save-excursion |
839 | (beginning-of-line) | |
840 | (looking-at fortran-comment-line-start-skip)) | |
841 | (insert ?\n fortran-comment-line-start ? ) | |
23029d77 | 842 | (if indent-tabs-mode |
7dae727d | 843 | (insert ?\n ?\t (fortran-numerical-continuation-char)) |
1eb6bf70 DL |
844 | (insert "\n " fortran-continuation-string))) ; Space after \n important |
845 | (fortran-indent-line)) ; when the cont string is C, c or *. | |
846 | ||
847 | (defun fortran-remove-continuation () | |
848 | (if (looking-at "\\( [^ 0\n]\\|\t[1-9]\\|&\\)") | |
849 | (progn (replace-match "") | |
850 | (delete-indentation) | |
851 | t))) | |
3dd63760 | 852 | |
46d4d7bf DL |
853 | (defun fortran-join-line (arg) |
854 | "Join current line to the previous one and re-indent. | |
855 | With a prefix argument, repeat this operation that many times. | |
856 | If the prefix argument ARG is negative, join the next -ARG lines. | |
857 | Continuation lines are correctly handled." | |
858 | (interactive "*p") | |
7977773d | 859 | (save-excursion |
46d4d7bf DL |
860 | (when (> 0 arg) |
861 | (setq arg (- arg)) | |
862 | (forward-line arg)) | |
863 | (while (not (zerop arg)) | |
864 | (beginning-of-line) | |
865 | (or (fortran-remove-continuation) | |
866 | (delete-indentation)) | |
867 | (setq arg (1- arg))) | |
7977773d DL |
868 | (fortran-indent-line))) |
869 | ||
3dd63760 | 870 | (defun fortran-numerical-continuation-char () |
b56eb7c9 | 871 | "Return a digit for tab-digit style of continuation lines. |
3dd63760 JB |
872 | If, previous line is a tab-digit continuation line, returns that digit |
873 | plus one. Otherwise return 1. Zero not allowed." | |
874 | (save-excursion | |
875 | (forward-line -1) | |
876 | (if (looking-at "\t[1-9]") | |
877 | (+ ?1 (% (- (char-after (+ (point) 1)) ?0) 9)) | |
878 | ?1))) | |
879 | ||
556dd629 | 880 | (put 'fortran-electric-line-number 'delete-selection t) |
3dd63760 JB |
881 | (defun fortran-electric-line-number (arg) |
882 | "Self insert, but if part of a Fortran line number indent it automatically. | |
7977773d | 883 | Auto-indent does not happen if a numeric ARG is used." |
3dd63760 JB |
884 | (interactive "P") |
885 | (if (or arg (not fortran-electric-line-number)) | |
60db3594 | 886 | (if arg |
b8cbdf43 | 887 | (self-insert-command (prefix-numeric-value arg)) |
3dd63760 JB |
888 | (self-insert-command 1)) |
889 | (if (or (and (= 5 (current-column)) | |
890 | (save-excursion | |
891 | (beginning-of-line) | |
315aa1de | 892 | (looking-at " \\{5\\}"))) ;In col 5 with only spaces to left. |
23029d77 | 893 | (and (= (if indent-tabs-mode |
1eb6bf70 DL |
894 | fortran-minimum-statement-indent-tab |
895 | fortran-minimum-statement-indent-fixed) (current-column)) | |
7dae727d DL |
896 | (eq ?\t (char-after (line-beginning-position))) ;In col 8 |
897 | ; with a single tab to the left. | |
3dd63760 JB |
898 | (not (or (eq last-command 'fortran-indent-line) |
899 | (eq last-command | |
aa4ed68c | 900 | 'fortran-indent-new-line)))) |
3dd63760 JB |
901 | (save-excursion |
902 | (re-search-backward "[^ \t0-9]" | |
7dae727d | 903 | (line-beginning-position) |
1eb6bf70 DL |
904 | t)) ;not a line number |
905 | (looking-at "[0-9]")) ;within a line number | |
b8cbdf43 | 906 | (self-insert-command (prefix-numeric-value arg)) |
3dd63760 JB |
907 | (skip-chars-backward " \t") |
908 | (insert last-command-char) | |
909 | (fortran-indent-line)))) | |
910 | \f | |
1eb6bf70 | 911 | (defvar fortran-end-prog-re1 |
7b84ff90 | 912 | "end\ |
823ab5da DL |
913 | \\([ \t]*\\(program\\|subroutine\\|function\\|block[ \t]*data\\)\\>\ |
914 | \\([ \t]*\\(\\sw\\|\\s_\\)+\\)?\\)?") | |
1eb6bf70 | 915 | (defvar fortran-end-prog-re |
0a3a1c19 DL |
916 | (concat "^[ \t0-9]*" fortran-end-prog-re1) |
917 | "Regexp possibly marking subprogram end.") | |
1eb6bf70 | 918 | |
823ab5da DL |
919 | (defun fortran-check-end-prog-re () |
920 | "Check a preliminary match against `fortran-end-prog-re'." | |
921 | ;; Having got a possible match for the subprogram end, we need a | |
922 | ;; match of whitespace, avoiding possible column 73+ stuff. | |
923 | (save-match-data | |
bd6cabcf | 924 | (string-match "^\\s-*\\(\\'\\|\\s<\\)" |
823ab5da DL |
925 | (buffer-substring (match-end 0) |
926 | (min (line-end-position) | |
927 | (+ 72 (line-beginning-position))))))) | |
928 | ||
929 | ;; Note that you can't just check backwards for `subroutine' &c in | |
930 | ;; case of un-marked main programs not at the start of the file. | |
7dae727d | 931 | (defun fortran-beginning-of-subprogram () |
b8cbdf43 | 932 | "Moves point to the beginning of the current Fortran subprogram." |
3dd63760 | 933 | (interactive) |
f687a879 DL |
934 | (save-match-data |
935 | (let ((case-fold-search t)) | |
936 | (beginning-of-line -1) | |
937 | (if (catch 'ok | |
938 | (while (re-search-backward fortran-end-prog-re nil 'move) | |
939 | (if (fortran-check-end-prog-re) | |
940 | (throw 'ok t)))) | |
941 | (forward-line))))) | |
3dd63760 | 942 | |
7dae727d | 943 | (defun fortran-end-of-subprogram () |
b8cbdf43 | 944 | "Moves point to the end of the current Fortran subprogram." |
3dd63760 | 945 | (interactive) |
f687a879 DL |
946 | (save-match-data |
947 | (let ((case-fold-search t)) | |
948 | (if (save-excursion ; on END | |
949 | (beginning-of-line) | |
950 | (and (looking-at fortran-end-prog-re) | |
951 | (fortran-check-end-prog-re))) | |
952 | (forward-line) | |
953 | (beginning-of-line 2) | |
954 | (catch 'ok | |
955 | (while (re-search-forward fortran-end-prog-re nil 'move) | |
956 | (if (fortran-check-end-prog-re) | |
957 | (throw 'ok t)))) | |
958 | (goto-char (match-beginning 0)) | |
959 | (forward-line))))) | |
3dd63760 | 960 | |
3dd63760 | 961 | (defun fortran-previous-statement () |
b8cbdf43 RS |
962 | "Moves point to beginning of the previous Fortran statement. |
963 | Returns `first-statement' if that statement is the first | |
3dd63760 JB |
964 | non-comment Fortran statement in the file, and nil otherwise." |
965 | (interactive) | |
966 | (let (not-first-statement continue-test) | |
967 | (beginning-of-line) | |
968 | (setq continue-test | |
b8cbdf43 | 969 | (and |
7dae727d | 970 | (not (looking-at fortran-comment-line-start-skip)) |
b8cbdf43 | 971 | (or (looking-at |
315aa1de DL |
972 | (concat "[ \t]*" |
973 | (regexp-quote fortran-continuation-string))) | |
974 | (looking-at " \\{5\\}[^ 0\n]\\|\t[1-9]")))) | |
3dd63760 | 975 | (while (and (setq not-first-statement (= (forward-line -1) 0)) |
7dae727d | 976 | (or (looking-at fortran-comment-line-start-skip) |
315aa1de DL |
977 | (looking-at "[ \t]*$\\| \\{5\\}[^ 0\n]\\|\t[1-9]") |
978 | (looking-at (concat "[ \t]*" comment-start-skip))))) | |
3dd63760 JB |
979 | (cond ((and continue-test |
980 | (not not-first-statement)) | |
981 | (message "Incomplete continuation statement.")) | |
60db3594 | 982 | (continue-test |
3dd63760 JB |
983 | (fortran-previous-statement)) |
984 | ((not not-first-statement) | |
985 | 'first-statement)))) | |
986 | ||
987 | (defun fortran-next-statement () | |
b8cbdf43 | 988 | "Moves point to beginning of the next Fortran statement. |
3dd63760 JB |
989 | Returns `last-statement' if that statement is the last |
990 | non-comment Fortran statement in the file, and nil otherwise." | |
991 | (interactive) | |
992 | (let (not-last-statement) | |
993 | (beginning-of-line) | |
b8cbdf43 RS |
994 | (while (and (setq not-last-statement |
995 | (and (= (forward-line 1) 0) | |
996 | (not (eobp)))) | |
7dae727d DL |
997 | (or (looking-at fortran-comment-line-start-skip) |
998 | (looking-at "[ \t]*$\\| [^ 0\n]\\|\t[1-9]") | |
315aa1de | 999 | (looking-at (concat "[ \t]*" comment-start-skip))))) |
3dd63760 JB |
1000 | (if (not not-last-statement) |
1001 | 'last-statement))) | |
1002 | \f | |
7dae727d DL |
1003 | (defun fortran-blink-match (regex keyword find-begin) |
1004 | "From a line matching REGEX, blink matching KEYWORD statement line. | |
1005 | Use function FIND-BEGIN to match it." | |
1eb6bf70 | 1006 | (let ((top-of-window (window-start)) |
7dae727d | 1007 | (end-point (point)) |
1eb6bf70 | 1008 | (case-fold-search t) |
7dae727d | 1009 | matching |
1eb6bf70 | 1010 | message) |
7dae727d DL |
1011 | (if (save-excursion |
1012 | (beginning-of-line) | |
1013 | (skip-chars-forward " \t0-9") | |
1014 | (looking-at regex)) | |
3dd63760 | 1015 | (progn |
7dae727d DL |
1016 | (if (not (setq matching (funcall find-begin))) |
1017 | (setq message (concat "No matching " keyword ".")) | |
1018 | (if (< matching top-of-window) | |
c5af0a18 | 1019 | (save-excursion |
7dae727d | 1020 | (goto-char matching) |
c5af0a18 RS |
1021 | (beginning-of-line) |
1022 | (setq message | |
1023 | (concat "Matches " | |
7dae727d DL |
1024 | (buffer-substring (point) |
1025 | (line-end-position))))))) | |
3dd63760 | 1026 | (if message |
b8cbdf43 | 1027 | (message "%s" message) |
7dae727d | 1028 | (goto-char matching) |
3dd63760 | 1029 | (sit-for 1) |
7dae727d DL |
1030 | (goto-char end-point)))))) |
1031 | ||
1032 | (defun fortran-blink-matching-if () | |
1033 | "From an ENDIF or ELSE statement, blink the matching IF statement." | |
1034 | (fortran-blink-match "e\\(nd[ \t]*if\\|lse\\([ \t]*if\\)?\\)\\b" | |
1035 | "if" #'fortran-beginning-if)) | |
947388af RS |
1036 | |
1037 | (defun fortran-blink-matching-do () | |
45cf60ae | 1038 | "From an ENDDO statement, blink the matching DO or DO WHILE statement." |
7dae727d | 1039 | (fortran-blink-match "end[ \t]*do\\b" "do" #'fortran-beginning-do)) |
c5af0a18 RS |
1040 | |
1041 | (defun fortran-mark-do () | |
60db3594 | 1042 | "Put mark at end of Fortran DO [WHILE]-ENDDO construct, point at beginning. |
c5af0a18 RS |
1043 | The marks are pushed." |
1044 | (interactive) | |
1045 | (let (enddo-point do-point) | |
1046 | (if (setq enddo-point (fortran-end-do)) | |
1047 | (if (not (setq do-point (fortran-beginning-do))) | |
1048 | (message "No matching do.") | |
c5af0a18 RS |
1049 | (goto-char enddo-point) |
1050 | (push-mark) | |
1051 | (goto-char do-point))))) | |
1052 | ||
1053 | (defun fortran-end-do () | |
45cf60ae DL |
1054 | "Search forward for first unmatched ENDDO. |
1055 | Return point or nil." | |
1eb6bf70 DL |
1056 | (let ((case-fold-search t)) |
1057 | (if (save-excursion (beginning-of-line) | |
1058 | (skip-chars-forward " \t0-9") | |
1059 | (looking-at "end[ \t]*do\\b")) | |
1060 | ;; Sitting on one. | |
1061 | (match-beginning 0) | |
1062 | ;; Search for one. | |
1063 | (save-excursion | |
1064 | (let ((count 1)) | |
7dae727d | 1065 | (while (and (not (= count 0)) |
1eb6bf70 DL |
1066 | (not (eq (fortran-next-statement) 'last-statement)) |
1067 | ;; Keep local to subprogram | |
45cf60ae DL |
1068 | (not (and (looking-at fortran-end-prog-re) |
1069 | (fortran-check-end-prog-re)))) | |
1eb6bf70 DL |
1070 | (skip-chars-forward " \t0-9") |
1071 | (cond ((looking-at "end[ \t]*do\\b") | |
1072 | (setq count (1- count))) | |
7dae727d DL |
1073 | ((looking-at |
1074 | "\\(\\(\\sw\\|\\s_\\)+:[ \t]*\\)?do[ \t]+[^0-9]") | |
1075 | (setq count (+ count 1))))) | |
1076 | (and (= count 0) | |
1eb6bf70 DL |
1077 | ;; All pairs accounted for. |
1078 | (point))))))) | |
c5af0a18 RS |
1079 | |
1080 | (defun fortran-beginning-do () | |
45cf60ae DL |
1081 | "Search backwards for first unmatched DO [WHILE]. |
1082 | Return point or nil." | |
1eb6bf70 | 1083 | (let ((case-fold-search t)) |
7dae727d DL |
1084 | (if (save-excursion |
1085 | (beginning-of-line) | |
1086 | (skip-chars-forward " \t0-9") | |
1087 | (looking-at "\\(\\(\\sw\\|\\s_\\)+:[ \t]*\\)?do[ \t]+")) | |
1eb6bf70 DL |
1088 | ;; Sitting on one. |
1089 | (match-beginning 0) | |
1090 | ;; Search for one. | |
1091 | (save-excursion | |
1092 | (let ((count 1)) | |
7dae727d | 1093 | (while (and (not (= count 0)) |
1eb6bf70 DL |
1094 | (not (eq (fortran-previous-statement) 'first-statement)) |
1095 | ;; Keep local to subprogram | |
45cf60ae DL |
1096 | (not (and (looking-at fortran-end-prog-re) |
1097 | (fortran-check-end-prog-re)))) | |
1eb6bf70 | 1098 | (skip-chars-forward " \t0-9") |
7dae727d DL |
1099 | (cond ((looking-at |
1100 | "\\(\\(\\sw\\|\\s_\\)+:[ \t]*\\)?do[ \t]+[^0-9]") | |
1eb6bf70 DL |
1101 | (setq count (1- count))) |
1102 | ((looking-at "end[ \t]*do\\b") | |
1103 | (setq count (1+ count))))) | |
7dae727d | 1104 | (and (= count 0) |
1eb6bf70 DL |
1105 | ;; All pairs accounted for. |
1106 | (point))))))) | |
c5af0a18 RS |
1107 | |
1108 | (defun fortran-mark-if () | |
1109 | "Put mark at end of Fortran IF-ENDIF construct, point at beginning. | |
1110 | The marks are pushed." | |
1111 | (interactive) | |
1112 | (let (endif-point if-point) | |
1113 | (if (setq endif-point (fortran-end-if)) | |
1114 | (if (not (setq if-point (fortran-beginning-if))) | |
1115 | (message "No matching if.") | |
1116 | ;; Set mark, move point. | |
1117 | (goto-char endif-point) | |
1118 | (push-mark) | |
1119 | (goto-char if-point))))) | |
1120 | ||
1eb6bf70 DL |
1121 | (defvar fortran-if-start-re "\\(\\(\\sw\\|\\s_\\)+:[ \t]*\\)?if[ \t]*(") |
1122 | ||
c5af0a18 | 1123 | (defun fortran-end-if () |
45cf60ae DL |
1124 | "Search forwards for first unmatched ENDIF. |
1125 | Return point or nil." | |
1eb6bf70 DL |
1126 | (let ((case-fold-search t)) |
1127 | (if (save-excursion (beginning-of-line) | |
1128 | (skip-chars-forward " \t0-9") | |
1129 | (looking-at "end[ \t]*if\\b")) | |
1130 | ;; Sitting on one. | |
1131 | (match-beginning 0) | |
1132 | ;; Search for one. The point has been already been moved to first | |
1133 | ;; letter on line but this should not cause troubles. | |
1134 | (save-excursion | |
1135 | (let ((count 1)) | |
7dae727d | 1136 | (while (and (not (= count 0)) |
1eb6bf70 DL |
1137 | (not (eq (fortran-next-statement) 'last-statement)) |
1138 | ;; Keep local to subprogram. | |
45cf60ae DL |
1139 | (not (and (looking-at fortran-end-prog-re) |
1140 | (fortran-check-end-prog-re)))) | |
1eb6bf70 DL |
1141 | (skip-chars-forward " \t0-9") |
1142 | (cond ((looking-at "end[ \t]*if\\b") | |
7dae727d | 1143 | (setq count (- count 1))) |
1eb6bf70 DL |
1144 | ((looking-at fortran-if-start-re) |
1145 | (save-excursion | |
1146 | (if (or | |
1147 | (looking-at ".*)[ \t]*then\\b[ \t]*[^ \t(=a-z0-9]") | |
1148 | (let (then-test) ; Multi-line if-then. | |
1149 | (while | |
315aa1de DL |
1150 | (and |
1151 | (= (forward-line 1) 0) | |
1152 | ;; Search forward for then. | |
1153 | (looking-at " \\{5\\}[^ 0\n]\\|\t[1-9]") | |
1154 | (not | |
1155 | (setq then-test | |
1156 | (looking-at | |
1157 | ".*then\\b[ \t]*[^ \t(=a-z0-9]"))))) | |
1eb6bf70 | 1158 | then-test)) |
7dae727d DL |
1159 | (setq count (+ count 1))))))) |
1160 | (and (= count 0) | |
1eb6bf70 DL |
1161 | ;; All pairs accounted for. |
1162 | (point))))))) | |
c5af0a18 RS |
1163 | |
1164 | (defun fortran-beginning-if () | |
45cf60ae DL |
1165 | "Search backwards for first unmatched IF-THEN. |
1166 | Return point or nil." | |
1eb6bf70 DL |
1167 | (let ((case-fold-search t)) |
1168 | (if (save-excursion | |
7dae727d DL |
1169 | ;; May be sitting on multi-line if-then statement, first |
1170 | ;; move to beginning of current statement. Note: | |
1171 | ;; `fortran-previous-statement' moves to previous statement | |
1172 | ;; *unless* current statement is first one. Only move | |
1173 | ;; forward if not first-statement. | |
1eb6bf70 DL |
1174 | (if (not (eq (fortran-previous-statement) 'first-statement)) |
1175 | (fortran-next-statement)) | |
1176 | (skip-chars-forward " \t0-9") | |
1177 | (and | |
1178 | (looking-at fortran-if-start-re) | |
1179 | (save-match-data | |
1180 | (or (looking-at ".*)[ \t]*then\\b[ \t]*[^ \t(=a-z0-9]") | |
1181 | ;; Multi-line if-then. | |
1182 | (let (then-test) | |
1183 | (while | |
c5af0a18 | 1184 | (and (= (forward-line 1) 0) |
1eb6bf70 | 1185 | ;; Search forward for then. |
315aa1de | 1186 | (looking-at " \\{5\\}[^ 0\n]\\|\t[1-9]") |
1eb6bf70 DL |
1187 | (not |
1188 | (setq then-test | |
1189 | (looking-at | |
1190 | ".*then\\b[ \t]*[^ \t(=a-z0-9]"))))) | |
1191 | then-test))))) | |
1192 | ;; Sitting on one. | |
1193 | (match-beginning 0) | |
1194 | ;; Search for one. | |
1195 | (save-excursion | |
1196 | (let ((count 1)) | |
7dae727d | 1197 | (while (and (not (= count 0)) |
1eb6bf70 DL |
1198 | (not (eq (fortran-previous-statement) 'first-statement)) |
1199 | ;; Keep local to subprogram. | |
45cf60ae DL |
1200 | (not (and (looking-at fortran-end-prog-re) |
1201 | (fortran-check-end-prog-re)))) | |
1eb6bf70 DL |
1202 | (skip-chars-forward " \t0-9") |
1203 | (cond ((looking-at fortran-if-start-re) | |
1204 | (save-excursion | |
1205 | (if (or | |
1206 | (looking-at ".*)[ \t]*then\\b[ \t]*[^ \t(=a-z0-9]") | |
1207 | (let (then-test) ; Multi-line if-then. | |
1208 | (while | |
315aa1de DL |
1209 | (and |
1210 | (= (forward-line 1) 0) | |
1211 | ;; Search forward for then. | |
1212 | (looking-at " \\{5\\}[^ 0\n]\\|\t[1-9]") | |
1213 | (not | |
1214 | (setq then-test | |
1215 | (looking-at | |
1216 | (concat ".*then\\b[ \t]*" | |
1217 | "[^ \t(=a-z[0-9]]")))))) | |
1eb6bf70 | 1218 | then-test)) |
7dae727d | 1219 | (setq count (- count 1))))) |
1eb6bf70 | 1220 | ((looking-at "end[ \t]*if\\b") |
7dae727d DL |
1221 | (setq count (+ count 1))))) |
1222 | (and (= count 0) | |
1eb6bf70 DL |
1223 | ;; All pairs accounted for. |
1224 | (point))))))) | |
3dd63760 JB |
1225 | \f |
1226 | (defun fortran-indent-line () | |
7977773d | 1227 | "Indent current Fortran line based on its contents and on previous lines." |
3dd63760 | 1228 | (interactive) |
1eb6bf70 | 1229 | (let ((cfi (fortran-calculate-indent))) |
3dd63760 JB |
1230 | (save-excursion |
1231 | (beginning-of-line) | |
1232 | (if (or (not (= cfi (fortran-current-line-indentation))) | |
1233 | (and (re-search-forward "^[ \t]*[0-9]+" (+ (point) 4) t) | |
1234 | (not (fortran-line-number-indented-correctly-p)))) | |
1235 | (fortran-indent-to-column cfi) | |
1236 | (beginning-of-line) | |
7dae727d | 1237 | (if (and (not (looking-at fortran-comment-line-start-skip)) |
23029d77 | 1238 | (fortran-find-comment-start-skip)) |
3dd63760 JB |
1239 | (fortran-indent-comment)))) |
1240 | ;; Never leave point in left margin. | |
1241 | (if (< (current-column) cfi) | |
1242 | (move-to-column cfi)) | |
23029d77 | 1243 | (if (and auto-fill-function |
7dae727d DL |
1244 | (> (save-excursion (end-of-line) (current-column)) |
1245 | fill-column)) | |
b8cbdf43 RS |
1246 | (save-excursion |
1247 | (end-of-line) | |
4254fe58 | 1248 | (fortran-fill))) |
3dd63760 | 1249 | (if fortran-blink-matching-if |
7977773d | 1250 | (progn |
947388af RS |
1251 | (fortran-blink-matching-if) |
1252 | (fortran-blink-matching-do))))) | |
3dd63760 | 1253 | |
315aa1de DL |
1254 | (defun fortran-auto-fill () |
1255 | (if (> (current-column) (current-fill-column)) | |
1256 | (let ((cfi (fortran-calculate-indent))) | |
1257 | (save-excursion | |
1258 | (beginning-of-line) | |
1259 | (if (or (not (= cfi (fortran-current-line-indentation))) | |
1260 | (and (re-search-forward "^[ \t]*[0-9]+" | |
1261 | (+ (point) 4) t) | |
1262 | (not (fortran-line-number-indented-correctly-p)))) | |
1263 | (fortran-indent-to-column cfi) | |
1264 | (beginning-of-line) | |
1265 | (if (and (not (looking-at fortran-comment-line-start-skip)) | |
1266 | (fortran-find-comment-start-skip)) | |
1267 | (fortran-indent-comment)))) | |
1268 | (fortran-fill) | |
1269 | ;; Never leave point in left margin. | |
1270 | (if (< (current-column) cfi) | |
1271 | (move-to-column cfi))))) | |
1272 | ||
5aca2648 DL |
1273 | ;; Historically this was a separate function which advertised itself |
1274 | ;; as reindenting but only did so where `most likely to be necessary'. | |
1275 | (defalias 'fortran-indent-new-line 'reindent-then-newline-and-indent) | |
b8cbdf43 | 1276 | |
3dd63760 | 1277 | (defun fortran-indent-subprogram () |
7977773d | 1278 | "Properly indent the Fortran subprogram which contains point." |
3dd63760 JB |
1279 | (interactive) |
1280 | (save-excursion | |
7a7db8e5 | 1281 | (mark-defun) |
c4c42b2e DL |
1282 | (message "Indenting subprogram...") |
1283 | (indent-region (point) (mark) nil)) | |
3dd63760 JB |
1284 | (message "Indenting subprogram...done.")) |
1285 | ||
1eb6bf70 | 1286 | (defun fortran-calculate-indent () |
b8cbdf43 | 1287 | "Calculates the Fortran indent column based on previous lines." |
3dd63760 JB |
1288 | (let (icol first-statement (case-fold-search t) |
1289 | (fortran-minimum-statement-indent | |
23029d77 JB |
1290 | (if indent-tabs-mode |
1291 | fortran-minimum-statement-indent-tab | |
1292 | fortran-minimum-statement-indent-fixed))) | |
3dd63760 JB |
1293 | (save-excursion |
1294 | (setq first-statement (fortran-previous-statement)) | |
1295 | (if first-statement | |
1296 | (setq icol fortran-minimum-statement-indent) | |
1297 | (progn | |
1298 | (if (= (point) (point-min)) | |
1299 | (setq icol fortran-minimum-statement-indent) | |
1300 | (setq icol (fortran-current-line-indentation))) | |
1301 | (skip-chars-forward " \t0-9") | |
1eb6bf70 | 1302 | (cond ((looking-at "\\(\\(\\sw\\|\\s_\\)+:[ \t]*\\)?if[ \t]*(") |
b8cbdf43 | 1303 | (if (or (looking-at ".*)[ \t]*then\\b[ \t]*[^ \t_$(=a-z0-9]") |
3dd63760 JB |
1304 | (let (then-test) ;multi-line if-then |
1305 | (while (and (= (forward-line 1) 0) | |
b8cbdf43 | 1306 | ;;search forward for then |
315aa1de | 1307 | (looking-at " \\{5\\}[^ 0\n]\\|\t[1-9]") |
7dae727d DL |
1308 | (not (setq then-test |
1309 | (looking-at | |
1310 | ".*then\\b[ \t]\ | |
b8cbdf43 | 1311 | *[^ \t_$(=a-z0-9]"))))) |
3dd63760 JB |
1312 | then-test)) |
1313 | (setq icol (+ icol fortran-if-indent)))) | |
1eb6bf70 | 1314 | ((looking-at "else\\(if\\)?\\b") |
3dd63760 | 1315 | (setq icol (+ icol fortran-if-indent))) |
1eb6bf70 | 1316 | ((looking-at "select[ \t]*case[ \t](.*)") |
5a8d870b | 1317 | (setq icol (+ icol fortran-if-indent))) |
1eb6bf70 | 1318 | ((looking-at "case[ \t]*(.*)") |
5a8d870b RS |
1319 | (setq icol (+ icol fortran-if-indent))) |
1320 | ((looking-at "case[ \t]*default\\b") | |
1321 | (setq icol (+ icol fortran-if-indent))) | |
b8cbdf43 RS |
1322 | ((looking-at "\\(otherwise\\|else[ \t]*where\\)\\b") |
1323 | (setq icol (+ icol fortran-if-indent))) | |
f93f92f1 | 1324 | ((looking-at "where[ \t]*(.*)[ \t]*\n") |
b8cbdf43 | 1325 | (setq icol (+ icol fortran-if-indent))) |
3dd63760 JB |
1326 | ((looking-at "do\\b") |
1327 | (setq icol (+ icol fortran-do-indent))) | |
b8cbdf43 | 1328 | ((looking-at |
7dae727d DL |
1329 | "\\(structure\\|union\\|map\\|interface\\)\ |
1330 | \\b[ \t]*[^ \t=(a-z]") | |
b8cbdf43 | 1331 | (setq icol (+ icol fortran-structure-indent))) |
45cf60ae DL |
1332 | ((and (looking-at fortran-end-prog-re1) |
1333 | (fortran-check-end-prog-re)) | |
b8cbdf43 | 1334 | ;; Previous END resets indent to minimum |
3dd63760 JB |
1335 | (setq icol fortran-minimum-statement-indent)))))) |
1336 | (save-excursion | |
1337 | (beginning-of-line) | |
1338 | (cond ((looking-at "[ \t]*$")) | |
7dae727d | 1339 | ((looking-at fortran-comment-line-start-skip) |
3dd63760 | 1340 | (cond ((eq fortran-comment-indent-style 'relative) |
23029d77 | 1341 | (setq icol (+ icol fortran-comment-line-extra-indent))) |
3dd63760 | 1342 | ((eq fortran-comment-indent-style 'fixed) |
b8cbdf43 | 1343 | (setq icol (+ fortran-minimum-statement-indent |
23029d77 | 1344 | fortran-comment-line-extra-indent)))) |
b8cbdf43 | 1345 | (setq fortran-minimum-statement-indent 0)) |
3dd63760 | 1346 | ((or (looking-at (concat "[ \t]*" |
b8cbdf43 RS |
1347 | (regexp-quote |
1348 | fortran-continuation-string))) | |
315aa1de | 1349 | (looking-at " \\{5\\}[^ 0\n]\\|\t[1-9]")) |
3dd63760 | 1350 | (setq icol (+ icol fortran-continuation-indent))) |
b56eb7c9 RS |
1351 | ((looking-at "[ \t]*#") ; Check for cpp directive. |
1352 | (setq fortran-minimum-statement-indent 0 icol 0)) | |
3dd63760 JB |
1353 | (first-statement) |
1354 | ((and fortran-check-all-num-for-matching-do | |
1355 | (looking-at "[ \t]*[0-9]+") | |
1356 | (fortran-check-for-matching-do)) | |
1357 | (setq icol (- icol fortran-do-indent))) | |
1358 | (t | |
1359 | (skip-chars-forward " \t0-9") | |
1eb6bf70 | 1360 | (cond ((looking-at "end[ \t]*\\(if\\|select\\|where\\)\\b") |
3dd63760 | 1361 | (setq icol (- icol fortran-if-indent))) |
1eb6bf70 | 1362 | ((looking-at "else\\(if\\)?\\b") |
5a8d870b | 1363 | (setq icol (- icol fortran-if-indent))) |
1eb6bf70 | 1364 | ((looking-at "case[ \t]*\\((.*)\\|default\\>\\)") |
5a8d870b | 1365 | (setq icol (- icol fortran-if-indent))) |
b8cbdf43 RS |
1366 | ((looking-at "\\(otherwise\\|else[ \t]*where\\)\\b") |
1367 | (setq icol (- icol fortran-if-indent))) | |
3dd63760 JB |
1368 | ((and (looking-at "continue\\b") |
1369 | (fortran-check-for-matching-do)) | |
1370 | (setq icol (- icol fortran-do-indent))) | |
1371 | ((looking-at "end[ \t]*do\\b") | |
1372 | (setq icol (- icol fortran-do-indent))) | |
1eb6bf70 | 1373 | ((looking-at "end[ \t]*\ |
5a8d870b | 1374 | \\(structure\\|union\\|map\\|interface\\)\\b[ \t]*[^ \t=(a-z]") |
b8cbdf43 | 1375 | (setq icol (- icol fortran-structure-indent))) |
1eb6bf70 | 1376 | ((and (looking-at fortran-end-prog-re1) |
45cf60ae | 1377 | (fortran-check-end-prog-re) |
3dd63760 JB |
1378 | (not (= icol fortran-minimum-statement-indent))) |
1379 | (message "Warning: `end' not in column %d. Probably\ | |
1380 | an unclosed block." fortran-minimum-statement-indent)))))) | |
1381 | (max fortran-minimum-statement-indent icol))) | |
1382 | \f | |
1383 | (defun fortran-current-line-indentation () | |
1384 | "Indentation of current line, ignoring Fortran line number or continuation. | |
1385 | This is the column position of the first non-whitespace character | |
1386 | aside from the line number and/or column 5/8 line-continuation character. | |
1387 | For comment lines, returns indentation of the first | |
1388 | non-indentation text within the comment." | |
1389 | (save-excursion | |
1390 | (beginning-of-line) | |
7dae727d | 1391 | (cond ((looking-at fortran-comment-line-start-skip) |
3dd63760 JB |
1392 | (goto-char (match-end 0)) |
1393 | (skip-chars-forward | |
b8cbdf43 RS |
1394 | (if (stringp fortran-comment-indent-char) |
1395 | fortran-comment-indent-char | |
1396 | (char-to-string fortran-comment-indent-char)))) | |
315aa1de | 1397 | ((or (looking-at " \\{5\\}[^ 0\n]\\|\t[1-9]")) |
3dd63760 JB |
1398 | (goto-char (match-end 0))) |
1399 | (t | |
1400 | ;; Move past line number. | |
7dae727d | 1401 | (skip-chars-forward "[ \t0-9]"))) |
3dd63760 JB |
1402 | ;; Move past whitespace. |
1403 | (skip-chars-forward " \t") | |
1404 | (current-column))) | |
1405 | ||
1406 | (defun fortran-indent-to-column (col) | |
7977773d | 1407 | "Indent current line with spaces to column COL. |
3dd63760 JB |
1408 | notes: 1) A non-zero/non-blank character in column 5 indicates a continuation |
1409 | line, and this continuation character is retained on indentation; | |
b8cbdf43 RS |
1410 | 2) If `fortran-continuation-string' is the first non-whitespace |
1411 | character, this is a continuation line; | |
3dd63760 JB |
1412 | 3) A non-continuation line which has a number as the first |
1413 | non-whitespace character is a numbered line. | |
b8cbdf43 | 1414 | 4) A TAB followed by a digit indicates a continuation line." |
3dd63760 JB |
1415 | (save-excursion |
1416 | (beginning-of-line) | |
7dae727d | 1417 | (if (looking-at fortran-comment-line-start-skip) |
3dd63760 | 1418 | (if fortran-comment-indent-style |
7dae727d DL |
1419 | (let* ((char (if (stringp fortran-comment-indent-char) |
1420 | (aref fortran-comment-indent-char 0) | |
1421 | fortran-comment-indent-char)) | |
1422 | (chars (string ? ?\t char))) | |
3dd63760 | 1423 | (goto-char (match-end 0)) |
7dae727d DL |
1424 | (skip-chars-backward chars) |
1425 | (delete-region (point) (progn (skip-chars-forward chars) | |
1426 | (point))) | |
3dd63760 JB |
1427 | (insert-char char (- col (current-column))))) |
1428 | (if (looking-at "\t[1-9]") | |
23029d77 | 1429 | (if indent-tabs-mode |
3dd63760 JB |
1430 | (goto-char (match-end 0)) |
1431 | (delete-char 2) | |
7dae727d | 1432 | (insert-char ? 5) |
3dd63760 | 1433 | (insert fortran-continuation-string)) |
315aa1de | 1434 | (if (looking-at " \\{5\\}[^ 0\n]") |
23029d77 | 1435 | (if indent-tabs-mode |
3dd63760 | 1436 | (progn (delete-char 6) |
7dae727d | 1437 | (insert ?\t (fortran-numerical-continuation-char) 1)) |
3dd63760 JB |
1438 | (forward-char 6)) |
1439 | (delete-horizontal-space) | |
b8cbdf43 RS |
1440 | ;; Put line number in columns 0-4 |
1441 | ;; or put continuation character in column 5. | |
3dd63760 JB |
1442 | (cond ((eobp)) |
1443 | ((looking-at (regexp-quote fortran-continuation-string)) | |
23029d77 | 1444 | (if indent-tabs-mode |
3dd63760 | 1445 | (progn |
60db3594 | 1446 | (indent-to |
23029d77 JB |
1447 | (if indent-tabs-mode |
1448 | fortran-minimum-statement-indent-tab | |
1449 | fortran-minimum-statement-indent-fixed)) | |
3dd63760 JB |
1450 | (delete-char 1) |
1451 | (insert-char (fortran-numerical-continuation-char) 1)) | |
b8cbdf43 RS |
1452 | (indent-to 5) |
1453 | (forward-char 1))) | |
3dd63760 JB |
1454 | ((looking-at "[0-9]+") |
1455 | (let ((extra-space (- 5 (- (match-end 0) (point))))) | |
1456 | (if (< extra-space 0) | |
1457 | (message "Warning: line number exceeds 5-digit limit.") | |
1458 | (indent-to (min fortran-line-number-indent extra-space)))) | |
1459 | (skip-chars-forward "0-9"))))) | |
1460 | ;; Point is now after any continuation character or line number. | |
1461 | ;; Put body of statement where specified. | |
1462 | (delete-horizontal-space) | |
1463 | (indent-to col) | |
1464 | ;; Indent any comment following code on the same line. | |
1465 | (if (and comment-start-skip | |
23029d77 | 1466 | (fortran-find-comment-start-skip)) |
3dd63760 | 1467 | (progn (goto-char (match-beginning 0)) |
7dae727d | 1468 | (if (not (= (current-column) |
315aa1de | 1469 | (fortran-comment-indent))) |
3dd63760 | 1470 | (progn (delete-horizontal-space) |
315aa1de | 1471 | (indent-to (fortran-comment-indent))))))))) |
3dd63760 JB |
1472 | |
1473 | (defun fortran-line-number-indented-correctly-p () | |
1474 | "Return t if current line's line number is correctly indented. | |
1475 | Do not call if there is no line number." | |
1476 | (save-excursion | |
1477 | (beginning-of-line) | |
1478 | (skip-chars-forward " \t") | |
1479 | (and (<= (current-column) fortran-line-number-indent) | |
1480 | (or (= (current-column) fortran-line-number-indent) | |
1481 | (progn (skip-chars-forward "0-9") | |
1482 | (= (current-column) 5)))))) | |
1483 | ||
1484 | (defun fortran-check-for-matching-do () | |
7977773d DL |
1485 | "When called from a numbered statement, return t if matching DO is found. |
1486 | Otherwise return nil." | |
7dae727d DL |
1487 | (let ((case-fold-search t) |
1488 | charnum) | |
3dd63760 JB |
1489 | (save-excursion |
1490 | (beginning-of-line) | |
1491 | (if (looking-at "[ \t]*[0-9]+") | |
1492 | (progn | |
1493 | (skip-chars-forward " \t") | |
7dae727d DL |
1494 | (skip-chars-forward "0") ;skip past leading zeros |
1495 | (setq charnum | |
1496 | (buffer-substring (point) (progn | |
1497 | (skip-chars-forward "0-9") | |
1498 | (point)))) | |
3dd63760 | 1499 | (beginning-of-line) |
7a7db8e5 DL |
1500 | (save-restriction |
1501 | (save-excursion | |
1502 | (narrow-to-defun) | |
1503 | (and (re-search-backward | |
315aa1de DL |
1504 | (concat |
1505 | "\\(^[ \t0-9]*do[ \t]*0*" | |
1506 | charnum "\\b\\)\\|" "\\(^[ \t]*0*" | |
1507 | charnum "\\b\\)") | |
7a7db8e5 | 1508 | nil t) |
315aa1de DL |
1509 | (looking-at |
1510 | (concat "^[ \t0-9]*do[ \t]*0*" | |
1511 | charnum)))))))))) | |
3dd63760 | 1512 | |
23029d77 | 1513 | (defun fortran-find-comment-start-skip () |
b8cbdf43 RS |
1514 | "Move to past `comment-start-skip' found on current line. |
1515 | Return t if `comment-start-skip' found, nil if not." | |
1eb6bf70 DL |
1516 | ;; In order to move point only if comment-start-skip is found, this |
1517 | ;; one uses a lot of save-excursions. Note that re-search-forward | |
1518 | ;; moves point even if comment-start-skip is inside a string-constant. | |
315aa1de | 1519 | ;; Some code expects certain values for match-beginning and end. |
b8cbdf43 | 1520 | (interactive) |
315aa1de DL |
1521 | (if (and comment-start-skip |
1522 | (save-excursion | |
1523 | (re-search-forward comment-start-skip (line-end-position) t))) | |
f022dd89 SM |
1524 | (let ((save-match-beginning (match-beginning 0)) |
1525 | (save-match-end (match-end 0))) | |
1526 | (if (fortran-is-in-string-p (match-beginning 0)) | |
1527 | (save-excursion | |
1528 | (goto-char save-match-end) | |
1529 | (fortran-find-comment-start-skip)) ; recurse for rest of line | |
1530 | (goto-char save-match-beginning) | |
7dae727d | 1531 | (re-search-forward comment-start-skip (line-end-position) t) |
f022dd89 | 1532 | (goto-char (match-end 0)) |
315aa1de | 1533 | t)))) |
f022dd89 | 1534 | |
1eb6bf70 DL |
1535 | ;;From: ralf@up3aud1.gwdg.de (Ralf Fassel) |
1536 | ;; Test if TAB format continuation lines work. | |
b56eb7c9 | 1537 | (defun fortran-is-in-string-p (where) |
7977773d | 1538 | "Return non-nil iff WHERE (a buffer position) is inside a Fortran string." |
b56eb7c9 RS |
1539 | (save-excursion |
1540 | (goto-char where) | |
1541 | (cond | |
1542 | ((bolp) nil) ; bol is never inside a string | |
1543 | ((save-excursion ; comment lines too | |
1eb6bf70 | 1544 | (beginning-of-line) |
7dae727d | 1545 | (looking-at fortran-comment-line-start-skip)) nil) |
b56eb7c9 RS |
1546 | (t (let (;; ok, serious now. Init some local vars: |
1547 | (parse-state '(0 nil nil nil nil nil 0)) | |
1548 | (quoted-comment-start (if comment-start | |
1549 | (regexp-quote comment-start))) | |
1550 | (not-done t) | |
7dae727d | 1551 | parse-limit end-of-line) |
b56eb7c9 RS |
1552 | ;; move to start of current statement |
1553 | (fortran-next-statement) | |
1554 | (fortran-previous-statement) | |
1555 | ;; now parse up to WHERE | |
1556 | (while not-done | |
1557 | (if (or ;; skip to next line if: | |
1558 | ;; - comment line? | |
7dae727d | 1559 | (looking-at fortran-comment-line-start-skip) |
b56eb7c9 RS |
1560 | ;; - at end of line? |
1561 | (eolp) | |
1562 | ;; - not in a string and after comment-start? | |
1563 | (and (not (nth 3 parse-state)) | |
1564 | comment-start | |
1565 | (equal comment-start | |
1566 | (char-to-string (preceding-char))))) | |
1eb6bf70 | 1567 | (if (> (forward-line) 0) |
b56eb7c9 RS |
1568 | (setq not-done nil)) |
1569 | ;; else: | |
1570 | ;; if we are at beginning of code line, skip any | |
1571 | ;; whitespace, labels and tab continuation markers. | |
1572 | (if (bolp) (skip-chars-forward " \t0-9")) | |
1573 | ;; if we are in column <= 5 now, check for continuation char | |
1574 | (cond ((= 5 (current-column)) (forward-char 1)) | |
1575 | ((and (< (current-column) 5) | |
1576 | (equal fortran-continuation-string | |
1577 | (char-to-string (following-char))) | |
1578 | (forward-char 1)))) | |
1579 | ;; find out parse-limit from here | |
7dae727d | 1580 | (setq end-of-line (line-end-position)) |
b56eb7c9 RS |
1581 | (setq parse-limit (min where end-of-line)) |
1582 | ;; parse max up to comment-start, if non-nil and in current line | |
1583 | (if comment-start | |
1584 | (save-excursion | |
1585 | (if (re-search-forward quoted-comment-start end-of-line t) | |
1586 | (setq parse-limit (min (point) parse-limit))))) | |
1587 | ;; now parse if still in limits | |
1588 | (if (< (point) where) | |
1589 | (setq parse-state (parse-partial-sexp | |
1590 | (point) parse-limit nil nil parse-state)) | |
7dae727d | 1591 | (setq not-done nil)))) |
b56eb7c9 RS |
1592 | ;; result is |
1593 | (nth 3 parse-state)))))) | |
b8cbdf43 | 1594 | |
7aabd23e DL |
1595 | ;; From old version. |
1596 | (defalias 'fortran-auto-fill-mode 'auto-fill-mode) | |
b8cbdf43 | 1597 | |
4254fe58 | 1598 | (defun fortran-fill () |
315aa1de | 1599 | (let* ((auto-fill-function #'fortran-auto-fill) |
e04196d3 | 1600 | (opoint (point)) |
7dae727d DL |
1601 | (bol (line-beginning-position)) |
1602 | (eol (line-end-position)) | |
b8cbdf43 RS |
1603 | (bos (min eol (+ bol (fortran-current-line-indentation)))) |
1604 | (quote | |
1605 | (save-excursion | |
1606 | (goto-char bol) | |
7dae727d | 1607 | (if (looking-at fortran-comment-line-start-skip) |
b8cbdf43 RS |
1608 | nil ; OK to break quotes on comment lines. |
1609 | (move-to-column fill-column) | |
1eb6bf70 DL |
1610 | (if (fortran-is-in-string-p (point)) |
1611 | (save-excursion (re-search-backward "\\S\"\\s\"\\S\"" bol t) | |
1612 | (if fortran-break-before-delimiters | |
1613 | (point) | |
1614 | (1+ (point)))))))) | |
b8cbdf43 RS |
1615 | ;; decide where to split the line. If a position for a quoted |
1616 | ;; string was found above then use that, else break the line | |
1617 | ;; before the last delimiter. | |
eb8c3be9 | 1618 | ;; Delimiters are whitespace, commas, and operators. |
b8cbdf43 | 1619 | ;; Will break before a pair of *'s. |
b8cbdf43 RS |
1620 | (fill-point |
1621 | (or quote | |
1622 | (save-excursion | |
1623 | (move-to-column (1+ fill-column)) | |
1624 | (skip-chars-backward "^ \t\n,'+-/*=)" | |
1625 | ;;; (if fortran-break-before-delimiters | |
1626 | ;;; "^ \t\n,'+-/*=" "^ \t\n,'+-/*=)") | |
1627 | ) | |
1628 | (if (<= (point) (1+ bos)) | |
1629 | (progn | |
1630 | (move-to-column (1+ fill-column)) | |
1eb6bf70 | 1631 | ;;what is this doing??? |
b8cbdf43 RS |
1632 | (if (not (re-search-forward "[\t\n,'+-/*)=]" eol t)) |
1633 | (goto-char bol)))) | |
1634 | (if (bolp) | |
1635 | (re-search-forward "[ \t]" opoint t) | |
1eb6bf70 DL |
1636 | (backward-char) |
1637 | (if (looking-at "\\s\"") | |
1638 | (forward-char) | |
b8cbdf43 RS |
1639 | (skip-chars-backward " \t\*"))) |
1640 | (if fortran-break-before-delimiters | |
1641 | (point) | |
1eb6bf70 | 1642 | (1+ (point))))))) |
b8cbdf43 RS |
1643 | ;; if we are in an in-line comment, don't break unless the |
1644 | ;; line of code is longer than it should be. Otherwise | |
1645 | ;; break the line at the column computed above. | |
1646 | ;; | |
23029d77 | 1647 | ;; Need to use fortran-find-comment-start-skip to make sure that quoted !'s |
b8cbdf43 RS |
1648 | ;; don't prevent a break. |
1649 | (if (not (or (save-excursion | |
315aa1de DL |
1650 | (if (and comment-start-skip |
1651 | (re-search-backward comment-start-skip bol t) | |
23029d77 | 1652 | (not (fortran-is-in-string-p (point)))) |
b8cbdf43 RS |
1653 | (progn |
1654 | (skip-chars-backward " \t") | |
1655 | (< (current-column) (1+ fill-column))))) | |
1656 | (save-excursion | |
1657 | (goto-char fill-point) | |
1658 | (bolp)))) | |
315aa1de DL |
1659 | (when (> (save-excursion |
1660 | (goto-char opoint) | |
1661 | (current-column)) | |
1662 | (min (1+ fill-column) | |
1663 | (+ (fortran-calculate-indent) | |
1664 | fortran-continuation-indent))) | |
1665 | (goto-char fill-point) | |
1666 | (fortran-break-line) | |
1667 | (end-of-line))))) | |
7dae727d | 1668 | |
b8cbdf43 RS |
1669 | (defun fortran-break-line () |
1670 | (let ((opoint (point)) | |
7dae727d DL |
1671 | (bol (line-beginning-position)) |
1672 | (eol (line-end-position)) | |
b8cbdf43 | 1673 | (comment-string nil)) |
b8cbdf43 | 1674 | (save-excursion |
23029d77 | 1675 | (if (and comment-start-skip (fortran-find-comment-start-skip)) |
b8cbdf43 RS |
1676 | (progn |
1677 | (re-search-backward comment-start-skip bol t) | |
1678 | (setq comment-string (buffer-substring (point) eol)) | |
1679 | (delete-region (point) eol)))) | |
1eb6bf70 DL |
1680 | ;; Forward line 1 really needs to go to next non white line |
1681 | (if (save-excursion (forward-line) | |
315aa1de | 1682 | (or (looking-at " \\{5\\}[^ 0\n]\\|\t[1-9]"))) |
b8cbdf43 | 1683 | (progn |
b8313955 RS |
1684 | (end-of-line) |
1685 | (delete-region (point) (match-end 0)) | |
b8cbdf43 | 1686 | (delete-horizontal-space) |
4254fe58 | 1687 | (fortran-fill)) |
b8cbdf43 RS |
1688 | (fortran-split-line)) |
1689 | (if comment-string | |
1690 | (save-excursion | |
1691 | (goto-char bol) | |
1692 | (end-of-line) | |
1693 | (delete-horizontal-space) | |
315aa1de | 1694 | (indent-to (fortran-comment-indent)) |
b8cbdf43 RS |
1695 | (insert comment-string))))) |
1696 | ||
23029d77 | 1697 | (defun fortran-analyze-file-format () |
7977773d | 1698 | "Return nil if fixed format is used, t if TAB formatting is used. |
23029d77 JB |
1699 | Use `fortran-tab-mode-default' if no non-comment statements are found in the |
1700 | file before the end or the first `fortran-analyze-depth' lines." | |
1701 | (let ((i 0)) | |
1702 | (save-excursion | |
1703 | (goto-char (point-min)) | |
1704 | (setq i 0) | |
1705 | (while (not (or | |
1706 | (eobp) | |
7dae727d | 1707 | (eq (char-after) ?\t) |
315aa1de | 1708 | (looking-at " \\{6\\}") |
23029d77 JB |
1709 | (> i fortran-analyze-depth))) |
1710 | (forward-line) | |
1711 | (setq i (1+ i))) | |
1712 | (cond | |
7dae727d | 1713 | ((eq (char-after) ?\t) t) |
315aa1de | 1714 | ((looking-at " \\{6\\}") nil) |
23029d77 JB |
1715 | (fortran-tab-mode-default t) |
1716 | (t nil))))) | |
1717 | ||
1718 | (or (assq 'fortran-tab-mode-string minor-mode-alist) | |
1719 | (setq minor-mode-alist (cons | |
1720 | '(fortran-tab-mode-string | |
1721 | (indent-tabs-mode fortran-tab-mode-string)) | |
1722 | minor-mode-alist))) | |
1723 | ||
1eb6bf70 DL |
1724 | (defun fortran-fill-paragraph (&optional justify) |
1725 | "Fill surrounding comment block as paragraphs, else fill statement. | |
1eb6bf70 DL |
1726 | Intended as the value of `fill-paragraph-function'." |
1727 | (interactive "P") | |
1728 | (save-excursion | |
1729 | (beginning-of-line) | |
68ca306c | 1730 | (if (not (looking-at fortran-comment-line-start-skip)) |
1eb6bf70 | 1731 | (fortran-fill-statement) |
68ca306c DL |
1732 | ;; We're in a comment block. Find the start and end of a |
1733 | ;; paragraph, delimited either by non-comment lines or empty | |
1734 | ;; comments. (Get positions as markers, since the | |
1735 | ;; `indent-region' below can shift the block's end). | |
1736 | (let* ((non-empty-comment | |
8b31236d | 1737 | (concat fortran-comment-line-start-skip "[^ \t\n]")) |
68ca306c DL |
1738 | (start (save-excursion |
1739 | ;; Find (start of) first line. | |
1740 | (while (and (zerop (forward-line -1)) | |
1741 | (looking-at non-empty-comment))) | |
1742 | (or (looking-at non-empty-comment) | |
1743 | (forward-line)) ; overshot | |
1744 | (point-marker))) | |
1745 | (end (save-excursion | |
1746 | ;; Find start of first line past region to fill. | |
1747 | (while (progn | |
1748 | (forward-line) | |
1749 | (looking-at non-empty-comment))) | |
1750 | (point-marker)))) | |
1751 | ;; Indent the block, find the string comprising the effective | |
1752 | ;; comment start skip and use that as a fill-prefix for | |
1753 | ;; filling the region. | |
1754 | (indent-region start end nil) | |
1755 | (let ((paragraph-ignore-fill-prefix nil) | |
1756 | (fill-prefix (progn | |
1757 | (beginning-of-line) | |
1758 | (looking-at fortran-comment-line-start-skip) | |
1759 | (match-string 0)))) | |
1760 | (let (fill-paragraph-function) | |
1761 | (fill-region start end justify))) ; with normal `fill-paragraph' | |
1762 | (set-marker start nil) | |
1763 | (set-marker end nil)))) | |
2d060beb | 1764 | t) |
1eb6bf70 DL |
1765 | |
1766 | (defun fortran-fill-statement () | |
1767 | "Fill a fortran statement up to `fill-column'." | |
1768 | (interactive) | |
315aa1de | 1769 | (let ((auto-fill-function #'fortran-auto-fill)) |
e04196d3 DL |
1770 | (if (not (save-excursion |
1771 | (beginning-of-line) | |
1772 | (or (looking-at "[ \t]*$") | |
7dae727d | 1773 | (looking-at fortran-comment-line-start-skip) |
e04196d3 | 1774 | (and comment-start-skip |
315aa1de DL |
1775 | (looking-at (concat "[ \t]*" |
1776 | comment-start-skip)))))) | |
e04196d3 DL |
1777 | (save-excursion |
1778 | ;; Find beginning of statement. | |
1779 | (fortran-next-statement) | |
1780 | (fortran-previous-statement) | |
1781 | ;; Re-indent initially. | |
1782 | (fortran-indent-line) | |
1783 | ;; Replace newline plus continuation field plus indentation with | |
1784 | ;; single space. | |
1785 | (while (progn | |
1786 | (forward-line) | |
1787 | (fortran-remove-continuation))) | |
1788 | (fortran-previous-statement))) | |
1789 | (fortran-indent-line))) | |
1eb6bf70 | 1790 | |
562e00da | 1791 | (defun fortran-strip-sqeuence-nos (&optional do-space) |
b9fe3dc8 RS |
1792 | "Delete all text in column 72 and up (assumed to be sequence numbers). |
1793 | Normally also deletes trailing whitespace after stripping such text. | |
1794 | Supplying prefix arg DO-SPACE prevents stripping the whitespace." | |
3b4613a4 DL |
1795 | (interactive "p") |
1796 | (save-excursion | |
1797 | (goto-char (point-min)) | |
562e00da | 1798 | (while (re-search-forward "^.\\{72\\}\\(.*\\)" nil t) |
3b4613a4 DL |
1799 | (replace-match "" nil nil nil 1) |
1800 | (unless do-space (delete-horizontal-space))))) | |
1801 | ||
68ca306c DL |
1802 | ;; This code used to live in add-log.el, but this is a better place |
1803 | ;; for it. | |
1804 | (defun fortran-current-defun () | |
1805 | "Function to use for `add-log-current-defun-function' in Fortran mode." | |
1806 | ;; We must be inside function body for this to work. | |
1807 | (fortran-beginning-of-subprogram) | |
1808 | (let ((case-fold-search t)) ; case-insensitive | |
1809 | ;; search for fortran subprogram start | |
1810 | (if (re-search-forward | |
315aa1de DL |
1811 | (concat "^[ \t]*\\(program\\|subroutine\\|function" |
1812 | "\\|[ \ta-z0-9*()]*[ \t]+function\\|" | |
1813 | "\\(block[ \t]*data\\)\\)") | |
68ca306c DL |
1814 | (save-excursion (fortran-end-of-subprogram) |
1815 | (point)) | |
1816 | t) | |
1817 | (or (match-string-no-properties 2) | |
1818 | (progn | |
1819 | ;; move to EOL or before first left paren | |
1820 | (if (re-search-forward "[(\n]" nil t) | |
1821 | (progn (backward-char) | |
1822 | (skip-chars-backward " \t")) | |
1823 | (end-of-line)) | |
1824 | ;; Use the name preceding that. | |
1825 | (buffer-substring-no-properties (point) (progn (backward-sexp) | |
1826 | (point))))) | |
1827 | "main"))) | |
1828 | ||
49116ac0 JB |
1829 | (provide 'fortran) |
1830 | ||
1a06eabd | 1831 | ;;; fortran.el ends here |