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e5167999 ER |
1 | ;;; fortran.el --- Fortran mode for GNU Emacs |
2 | ||
7977773d | 3 | ;; Copyright (c) 1986, 1993, 1994, 1995, 1997, 1998 Free Software Foundation, Inc. |
9750e079 | 4 | |
e5167999 | 5 | ;; Author: Michael D. Prange <prange@erl.mit.edu> |
7977773d | 6 | ;; Maintainer: Dave Love <fx@gnu.org> |
fd7fa35a | 7 | ;; Keywords: languages |
1a06eabd | 8 | |
e5167999 ER |
9 | ;; This file is part of GNU Emacs. |
10 | ||
11 | ;; GNU Emacs is free software; you can redistribute it and/or modify | |
12 | ;; it under the terms of the GNU General Public License as published by | |
13 | ;; the Free Software Foundation; either version 2, or (at your option) | |
14 | ;; any later version. | |
15 | ||
16 | ;; GNU Emacs is distributed in the hope that it will be useful, | |
17 | ;; but WITHOUT ANY WARRANTY; without even the implied warranty of | |
18 | ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
19 | ;; GNU General Public License for more details. | |
20 | ||
21 | ;; You should have received a copy of the GNU General Public License | |
b578f267 EN |
22 | ;; along with GNU Emacs; see the file COPYING. If not, write to the |
23 | ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
24 | ;; Boston, MA 02111-1307, USA. | |
e5167999 ER |
25 | |
26 | ;;; Commentary: | |
27 | ||
7977773d DL |
28 | ;; This mode is documented in the Emacs manual. |
29 | ;; | |
30 | ;; Note that it is for editing Fortran77 or Fortran90 fixed source | |
31 | ;; form. For editing Fortran90 free format source, use `f90-mode' | |
32 | ;; (f90.el). | |
33 | ||
34 | ;;; History: | |
35 | ||
36 | ;; Fortran mode was upgraded by Stephen A. Wood (saw@cebaf.gov). | |
23029d77 JB |
37 | |
38 | ;; We acknowledge many contributions and valuable suggestions by | |
b8cbdf43 | 39 | ;; Lawrence R. Dodd, Ralf Fassel, Ralph Finch, Stephen Gildea, |
60db3594 | 40 | ;; Dr. Anil Gokhale, Ulrich Mueller, Mark Neale, Eric Prestemon, |
b8cbdf43 RS |
41 | ;; Gary Sabot and Richard Stallman. |
42 | ||
e5167999 ER |
43 | ;;; Code: |
44 | ||
1eb6bf70 DL |
45 | ;; Todo: |
46 | ||
47 | ;; * Implement insertion and removal of statement continuations in | |
48 | ;; mixed f77/f90 style, with the first `&' past column 72 and the | |
49 | ;; second in column 6. | |
50 | ;; * Support other f90-style stuff grokked by GNU Fortran. | |
51 | ||
7977773d | 52 | (require 'easymenu) |
b578f267 | 53 | |
fcad5199 RS |
54 | (defgroup fortran nil |
55 | "Fortran mode for Emacs" | |
56 | :group 'languages) | |
57 | ||
58 | (defgroup fortran-indent nil | |
59 | "Indentation variables in Fortran mode" | |
60 | :prefix "fortran-" | |
61 | :group 'fortran) | |
62 | ||
63 | (defgroup fortran-comment nil | |
64 | "Comment-handling variables in Fortran mode" | |
65 | :prefix "fortran-" | |
66 | :group 'fortran) | |
67 | ||
68 | ||
3dd63760 | 69 | ;;;###autoload |
fcad5199 | 70 | (defcustom fortran-tab-mode-default nil |
e80f2147 RS |
71 | "*Default tabbing/carriage control style for empty files in Fortran mode. |
72 | A value of t specifies tab-digit style of continuation control. | |
73 | A value of nil specifies that continuation lines are marked | |
fcad5199 RS |
74 | with a character in column 6." |
75 | :type 'boolean | |
76 | :group 'fortran-indent) | |
e80f2147 | 77 | |
e80f2147 | 78 | ;; Buffer local, used to display mode line. |
fcad5199 RS |
79 | (defcustom fortran-tab-mode-string nil |
80 | "String to appear in mode line when TAB format mode is on." | |
81 | :type '(choice (const nil) string) | |
82 | :group 'fortran-indent) | |
1eb6bf70 | 83 | (make-variable-buffer-local 'fortran-tab-mode-string) |
fcad5199 RS |
84 | |
85 | (defcustom fortran-do-indent 3 | |
86 | "*Extra indentation applied to DO blocks." | |
87 | :type 'integer | |
88 | :group 'fortran-indent) | |
89 | ||
90 | (defcustom fortran-if-indent 3 | |
91 | "*Extra indentation applied to IF blocks." | |
92 | :type 'integer | |
93 | :group 'fortran-indent) | |
94 | ||
95 | (defcustom fortran-structure-indent 3 | |
96 | "*Extra indentation applied to STRUCTURE, UNION, MAP and INTERFACE blocks." | |
97 | :type 'integer | |
98 | :group 'fortran-indent) | |
99 | ||
100 | (defcustom fortran-continuation-indent 5 | |
101 | "*Extra indentation applied to Fortran continuation lines." | |
102 | :type 'integer | |
103 | :group 'fortran-indent) | |
104 | ||
105 | (defcustom fortran-comment-indent-style 'fixed | |
7977773d DL |
106 | "*How to indent comments. |
107 | nil forces comment lines not to be touched, | |
23029d77 JB |
108 | 'fixed makes fixed comment indentation to `fortran-comment-line-extra-indent' |
109 | columns beyond `fortran-minimum-statement-indent-fixed' (for | |
110 | `indent-tabs-mode' of nil) or `fortran-minimum-statement-indent-tab' (for | |
111 | `indent-tabs-mode' of t), and 'relative indents to current | |
fcad5199 | 112 | Fortran indentation plus `fortran-comment-line-extra-indent'." |
1eb6bf70 | 113 | :type '(radio (const :tag "Untouched" nil) (const fixed) (const relative)) |
fcad5199 RS |
114 | :group 'fortran-indent) |
115 | ||
116 | (defcustom fortran-comment-line-extra-indent 0 | |
117 | "*Amount of extra indentation for text within full-line comments." | |
118 | :type 'integer | |
119 | :group 'fortran-indent | |
120 | :group 'fortran-comment) | |
121 | ||
122 | (defcustom comment-line-start nil | |
123 | "*Delimiter inserted to start new full-line comment." | |
124 | :type '(choice string (const nil)) | |
125 | :group 'fortran-comment) | |
126 | ||
127 | (defcustom comment-line-start-skip nil | |
128 | "*Regexp to match the start of a full-line comment." | |
129 | :type '(choice string (const nil)) | |
130 | :group 'fortran-comment) | |
131 | ||
132 | (defcustom fortran-minimum-statement-indent-fixed 6 | |
133 | "*Minimum statement indentation for fixed format continuation style." | |
134 | :type 'integer | |
135 | :group 'fortran-indent) | |
136 | ||
137 | (defcustom fortran-minimum-statement-indent-tab (max tab-width 6) | |
138 | "*Minimum statement indentation for TAB format continuation style." | |
139 | :type 'integer | |
140 | :group 'fortran-indent) | |
3dd63760 JB |
141 | |
142 | ;; Note that this is documented in the v18 manuals as being a string | |
143 | ;; of length one rather than a single character. | |
144 | ;; The code in this file accepts either format for compatibility. | |
fcad5199 | 145 | (defcustom fortran-comment-indent-char " " |
3dd63760 | 146 | "*Single-character string inserted for Fortran comment indentation. |
fcad5199 RS |
147 | Normally a space." |
148 | :type 'string | |
149 | :group 'fortran-comment) | |
3dd63760 | 150 | |
fcad5199 | 151 | (defcustom fortran-line-number-indent 1 |
3dd63760 | 152 | "*Maximum indentation for Fortran line numbers. |
fcad5199 RS |
153 | 5 means right-justify them within their five-column field." |
154 | :type 'integer | |
155 | :group 'fortran-indent) | |
3dd63760 | 156 | |
fcad5199 RS |
157 | (defcustom fortran-check-all-num-for-matching-do nil |
158 | "*Non-nil causes all numbered lines to be treated as possible DO loop ends." | |
159 | :type 'boolean | |
160 | :group 'fortran) | |
3dd63760 | 161 | |
fcad5199 | 162 | (defcustom fortran-blink-matching-if nil |
c5af0a18 | 163 | "*Non-nil causes \\[fortran-indent-line] on ENDIF statement to blink on matching IF. |
fcad5199 RS |
164 | Also, from an ENDDO statement blink on matching DO [WHILE] statement." |
165 | :type 'boolean | |
166 | :group 'fortran) | |
3dd63760 | 167 | |
fcad5199 | 168 | (defcustom fortran-continuation-string "$" |
b8cbdf43 | 169 | "*Single-character string used for Fortran continuation lines. |
3dd63760 JB |
170 | In fixed format continuation style, this character is inserted in |
171 | column 6 by \\[fortran-split-line] to begin a continuation line. | |
172 | Also, if \\[fortran-indent-line] finds this at the beginning of a line, it will | |
173 | convert the line into a continuation line of the appropriate style. | |
fcad5199 RS |
174 | Normally $." |
175 | :type 'string | |
176 | :group 'fortran) | |
3dd63760 | 177 | |
fcad5199 | 178 | (defcustom fortran-comment-region "c$$$" |
1eb6bf70 DL |
179 | "*String inserted by \\[fortran-comment-region] at start of each \ |
180 | line in region." | |
fcad5199 RS |
181 | :type 'string |
182 | :group 'fortran-comment) | |
3dd63760 | 183 | |
fcad5199 | 184 | (defcustom fortran-electric-line-number t |
1eb6bf70 DL |
185 | "*Non-nil causes line number digits to be moved to the correct \ |
186 | column as typed." | |
fcad5199 RS |
187 | :type 'boolean |
188 | :group 'fortran) | |
3dd63760 | 189 | |
23029d77 JB |
190 | (defvar fortran-column-ruler-fixed |
191 | "0 4 6 10 20 30 40 5\ | |
7977773d | 192 | 0 60 70\n\ |
f022dd89 SM |
193 | \[ ]|{ | | | | | | | | \ |
194 | \| | | | |}\n" | |
dc6579ac | 195 | "String displayed above current line by \\[fortran-column-ruler]. |
5a8d870b | 196 | This variable used in fixed format mode.") |
23029d77 JB |
197 | |
198 | (defvar fortran-column-ruler-tab | |
199 | "0 810 20 30 40 5\ | |
7977773d | 200 | 0 60 70\n\ |
f022dd89 SM |
201 | \[ ]| { | | | | | | | | \ |
202 | \| | | | |}\n" | |
dc6579ac | 203 | "String displayed above current line by \\[fortran-column-ruler]. |
5a8d870b | 204 | This variable used in TAB format mode.") |
3dd63760 | 205 | |
3dd63760 JB |
206 | (defvar fortran-mode-syntax-table nil |
207 | "Syntax table in use in Fortran mode buffers.") | |
208 | ||
209 | (defvar fortran-analyze-depth 100 | |
1eb6bf70 DL |
210 | "Number of lines to scan to determine whether to use fixed or TAB \ |
211 | format style.") | |
3dd63760 | 212 | |
fcad5199 | 213 | (defcustom fortran-break-before-delimiters t |
1eb6bf70 | 214 | "*Non-nil causes filling to break lines before delimiters." |
fcad5199 RS |
215 | :type 'boolean |
216 | :group 'fortran) | |
b8cbdf43 | 217 | |
3dd63760 JB |
218 | (if fortran-mode-syntax-table |
219 | () | |
220 | (setq fortran-mode-syntax-table (make-syntax-table)) | |
7977773d DL |
221 | ;; We might like `;' to be punctuation (g77 multi-statement lines), |
222 | ;; but that screws abbrevs. | |
3dd63760 JB |
223 | (modify-syntax-entry ?\; "w" fortran-mode-syntax-table) |
224 | (modify-syntax-entry ?\r " " fortran-mode-syntax-table) | |
225 | (modify-syntax-entry ?+ "." fortran-mode-syntax-table) | |
226 | (modify-syntax-entry ?- "." fortran-mode-syntax-table) | |
227 | (modify-syntax-entry ?= "." fortran-mode-syntax-table) | |
228 | (modify-syntax-entry ?* "." fortran-mode-syntax-table) | |
229 | (modify-syntax-entry ?/ "." fortran-mode-syntax-table) | |
230 | (modify-syntax-entry ?\' "\"" fortran-mode-syntax-table) | |
231 | (modify-syntax-entry ?\" "\"" fortran-mode-syntax-table) | |
232 | (modify-syntax-entry ?\\ "/" fortran-mode-syntax-table) | |
7977773d DL |
233 | ;; This might be better as punctuation, as for C, but this way you |
234 | ;; can treat floating-point numbers as symbols. | |
235 | (modify-syntax-entry ?. "_" fortran-mode-syntax-table) ; e.g. `a.ne.b' | |
236 | (modify-syntax-entry ?_ "_" fortran-mode-syntax-table) | |
237 | (modify-syntax-entry ?$ "_" fortran-mode-syntax-table) ; esp. VMSisms | |
563f09b5 | 238 | (modify-syntax-entry ?\! "<" fortran-mode-syntax-table) |
3dd63760 JB |
239 | (modify-syntax-entry ?\n ">" fortran-mode-syntax-table)) |
240 | ||
563f09b5 SM |
241 | ;; Comments are real pain in Fortran because there is no way to represent the |
242 | ;; standard comment syntax in an Emacs syntax table (we can for VAX-style). | |
243 | ;; Therefore an unmatched quote in a standard comment will throw fontification | |
f022dd89 | 244 | ;; off on the wrong track. So we do syntactic fontification with regexps. |
60db3594 | 245 | \f |
f022dd89 SM |
246 | ;; Regexps done by simon@gnu with help from Ulrik Dickow <dickow@nbi.dk> and |
247 | ;; probably others Si's forgotten about (sorry). | |
563f09b5 | 248 | |
f408b027 | 249 | (defconst fortran-font-lock-keywords-1 nil |
f3d4eb7b | 250 | "Subdued level highlighting for Fortran mode.") |
563f09b5 | 251 | |
f408b027 SM |
252 | (defconst fortran-font-lock-keywords-2 nil |
253 | "Medium level highlighting for Fortran mode.") | |
254 | ||
255 | (defconst fortran-font-lock-keywords-3 nil | |
256 | "Gaudy level highlighting for Fortran mode.") | |
257 | ||
37c3edc4 DL |
258 | (let ((comment-chars "c!*") |
259 | (fortran-type-types | |
260 | (eval-when-compile | |
1eb6bf70 DL |
261 | (regexp-opt |
262 | (let ((simple-types '("character" "byte" "integer" "logical" | |
263 | "none" "real" "complex" | |
264 | "double[ \t]*precision" "double[ \t]*complex")) | |
265 | (structured-types '("structure" "union" "map")) | |
266 | (other-types '("record" "dimension" "parameter" "common" "save" | |
267 | "external" "intrinsic" "data" "equivalence"))) | |
268 | (append | |
269 | (mapcar (lambda (x) (concat "implicit[ \t]*" x)) simple-types) | |
270 | simple-types | |
271 | (mapcar (lambda (x) (concat "end[ \t]*" x)) structured-types) | |
272 | structured-types | |
37c3edc4 DL |
273 | other-types))))) |
274 | (fortran-keywords | |
275 | (eval-when-compile | |
1eb6bf70 DL |
276 | (regexp-opt '("continue" "format" "end" "enddo" "if" "then" |
277 | "else" "endif" "elseif" "while" "inquire" "stop" | |
278 | "return" "include" "open" "close" "read" "write" | |
37c3edc4 DL |
279 | "format" "print" "select" "case")))) |
280 | (fortran-logicals | |
281 | (eval-when-compile | |
1eb6bf70 | 282 | (regexp-opt '("and" "or" "not" "lt" "le" "eq" "ge" "gt" "ne" |
37c3edc4 DL |
283 | "true" "false"))))) |
284 | ||
285 | (setq fortran-font-lock-keywords-1 | |
286 | (list | |
287 | ;; | |
288 | ;; Fontify syntactically (assuming strings cannot be quoted | |
289 | ;; or span lines). | |
290 | (cons (concat "^[" comment-chars "].*") 'font-lock-comment-face) | |
291 | '(fortran-match-!-comment . font-lock-comment-face) | |
292 | (list (concat "^[^" comment-chars "\t\n]" (make-string 71 ?.) | |
293 | "\\(.*\\)") | |
294 | '(1 font-lock-comment-face)) | |
295 | '("\\(\\s\"\\)\"[^\n]*\\1?" . font-lock-string-face) | |
296 | ;; | |
297 | ;; Program, subroutine and function declarations, plus calls. | |
298 | (list (concat "\\<\\(block[ \t]*data\\|call\\|entry\\|function\\|" | |
299 | "program\\|subroutine\\)\\>[ \t]*\\(\\sw+\\)?") | |
300 | '(1 font-lock-keyword-face) | |
301 | '(2 font-lock-function-name-face nil t)))) | |
302 | ||
303 | (setq fortran-font-lock-keywords-2 | |
304 | (append fortran-font-lock-keywords-1 | |
305 | (list | |
306 | ;; | |
307 | ;; Fontify all type specifiers (must be first; see below). | |
308 | (cons (concat "\\<\\(" fortran-type-types "\\)\\>") | |
309 | 'font-lock-type-face) | |
310 | ;; | |
311 | ;; Fontify all builtin keywords (except logical, do | |
312 | ;; and goto; see below). | |
313 | (concat "\\<\\(" fortran-keywords "\\)\\>") | |
314 | ;; | |
315 | ;; Fontify all builtin operators. | |
316 | (concat "\\.\\(" fortran-logicals "\\)\\.") | |
317 | ;; | |
318 | ;; Fontify do/goto keywords and targets, and goto tags. | |
319 | (list "\\<\\(do\\|go *to\\)\\>[ \t]*\\([0-9]+\\)?" | |
320 | '(1 font-lock-keyword-face) | |
321 | '(2 font-lock-constant-face nil t)) | |
322 | (cons "^ *\\([0-9]+\\)" 'font-lock-constant-face)))) | |
323 | ||
324 | (setq fortran-font-lock-keywords-3 | |
325 | (append | |
326 | ;; | |
327 | ;; The list `fortran-font-lock-keywords-1'. | |
328 | fortran-font-lock-keywords-1 | |
329 | ;; | |
330 | ;; Fontify all type specifiers plus their declared items. | |
331 | (list | |
332 | (list (concat "\\<\\(" fortran-type-types "\\)\\>[ \t(/]*\\(*\\)?") | |
333 | ;; Fontify the type specifier. | |
334 | '(1 font-lock-type-face) | |
335 | ;; Fontify each declaration item (or just the /.../ block name). | |
336 | '(font-lock-match-c-style-declaration-item-and-skip-to-next | |
337 | ;; Start after any *(...) expression. | |
338 | (and (match-beginning 15) (forward-sexp)) | |
339 | ;; No need to clean up. | |
340 | nil | |
341 | ;; Fontify as a variable name, functions are | |
342 | ;; fontified elsewhere. | |
343 | (1 font-lock-variable-name-face nil t)))) | |
344 | ;; | |
345 | ;; Things extra to `fortran-font-lock-keywords-3' | |
346 | ;; (must be done first). | |
347 | (list | |
348 | ;; | |
349 | ;; Fontify goto-like `err=label'/`end=label' in read/write | |
350 | ;; statements. | |
351 | '(", *\\(e\\(nd\\|rr\\)\\)\\> *\\(= *\\([0-9]+\\)\\)?" | |
352 | (1 font-lock-keyword-face) (4 font-lock-constant-face nil t)) | |
353 | ;; | |
354 | ;; Highlight standard continuation character and in a | |
355 | ;; TAB-formatted line. | |
356 | '("^ \\([^ 0]\\)" 1 font-lock-string-face) | |
357 | '("^\t\\([1-9]\\)" 1 font-lock-string-face)) | |
358 | ;; | |
359 | ;; The list `fortran-font-lock-keywords-2' less that for types | |
360 | ;; (see above). | |
361 | (cdr (nthcdr (length fortran-font-lock-keywords-1) | |
362 | fortran-font-lock-keywords-2))))) | |
f022dd89 | 363 | |
f3d4eb7b SM |
364 | (defvar fortran-font-lock-keywords fortran-font-lock-keywords-1 |
365 | "Default expressions to highlight in Fortran mode.") | |
60db3594 | 366 | \f |
9645c179 | 367 | (defvar fortran-imenu-generic-expression |
240e9cda DL |
368 | ;; These patterns could be confused by sequence nos. in cols 72+ and |
369 | ;; don't allow continuations everywhere. | |
7977773d DL |
370 | (list |
371 | (list | |
372 | nil | |
373 | ;; Lines below are: 1. leading whitespace; 2. function | |
374 | ;; declaration with optional type, e.g. `real', `real*4', | |
375 | ;; character(*), `double precision' and possible statement | |
376 | ;; continuation; 3. untyped declarations; 4. the variable to | |
377 | ;; index. [This will be fooled by `end function' allowed by G77. | |
378 | ;; Also, it assumes sensible whitespace is employed.] | |
379 | (concat "^\\s-+\\(\ | |
1eb6bf70 DL |
380 | \\(\\sw\\|\\s-\\|[*()+]\\)*\ |
381 | \\<function\\|subroutine\\|entry\\|block\\s-*data\\|program\\)\ | |
382 | [ \t" fortran-continuation-string "]+\ | |
7977773d DL |
383 | \\(\\sw+\\)") |
384 | 3) | |
385 | ;; Un-named block data | |
386 | (list nil "^\\s-+\\(block\\s-*data\\)\\s-*$" 1)) | |
240e9cda | 387 | "imenu generic expression for `imenu-default-create-index-function'.") |
f408b027 | 388 | |
60db3594 | 389 | (defvar fortran-mode-map () |
b8cbdf43 | 390 | "Keymap used in Fortran mode.") |
3dd63760 JB |
391 | (if fortran-mode-map |
392 | () | |
393 | (setq fortran-mode-map (make-sparse-keymap)) | |
394 | (define-key fortran-mode-map ";" 'fortran-abbrev-start) | |
395 | (define-key fortran-mode-map "\C-c;" 'fortran-comment-region) | |
e9feb305 DL |
396 | (define-key fortran-mode-map "\M-\C-a" 'beginning-of-fortran-subprogram) |
397 | (define-key fortran-mode-map "\M-\C-e" 'end-of-fortran-subprogram) | |
398 | (define-key fortran-mode-map "\M-;" 'fortran-indent-comment) | |
399 | (define-key fortran-mode-map "\M-\C-h" 'mark-fortran-subprogram) | |
400 | (define-key fortran-mode-map "\M-\n" 'fortran-split-line) | |
aa4ed68c | 401 | (define-key fortran-mode-map "\n" 'fortran-indent-new-line) |
e9feb305 | 402 | (define-key fortran-mode-map "\M-\C-q" 'fortran-indent-subprogram) |
3dd63760 JB |
403 | (define-key fortran-mode-map "\C-c\C-w" 'fortran-window-create-momentarily) |
404 | (define-key fortran-mode-map "\C-c\C-r" 'fortran-column-ruler) | |
405 | (define-key fortran-mode-map "\C-c\C-p" 'fortran-previous-statement) | |
406 | (define-key fortran-mode-map "\C-c\C-n" 'fortran-next-statement) | |
e9feb305 DL |
407 | (define-key fortran-mode-map "\C-c\C-d" 'fortran-join-line) ; like f90 |
408 | (define-key fortran-mode-map | |
409 | "\M-^" 'fortran-join-line) ; basically a delete-indentation equivalent | |
dc6579ac | 410 | (define-key fortran-mode-map "\C-xnd" 'fortran-narrow-to-subprogram) |
1eb6bf70 | 411 | ;(define-key fortran-mode-map "\t" 'fortran-indent-line) |
3dd63760 JB |
412 | (define-key fortran-mode-map "0" 'fortran-electric-line-number) |
413 | (define-key fortran-mode-map "1" 'fortran-electric-line-number) | |
414 | (define-key fortran-mode-map "2" 'fortran-electric-line-number) | |
415 | (define-key fortran-mode-map "3" 'fortran-electric-line-number) | |
416 | (define-key fortran-mode-map "4" 'fortran-electric-line-number) | |
417 | (define-key fortran-mode-map "5" 'fortran-electric-line-number) | |
418 | (define-key fortran-mode-map "6" 'fortran-electric-line-number) | |
419 | (define-key fortran-mode-map "7" 'fortran-electric-line-number) | |
420 | (define-key fortran-mode-map "8" 'fortran-electric-line-number) | |
7977773d DL |
421 | (define-key fortran-mode-map "9" 'fortran-electric-line-number) |
422 | ||
423 | ;; Menu | |
424 | (unless (boundp 'fortran-mode-menu) | |
425 | (easy-menu-define | |
426 | fortran-mode-menu fortran-mode-map "" | |
427 | '("Fortran" | |
428 | ["Toggle Auto-fill" fortran-auto-fill-mode :style toggle | |
429 | :selected (eq auto-fill-function 'fortran-do-auto-fill)] | |
430 | ["Toggle abbrev-mode" abbrev-mode :style toggle :selected abbrev-mode] | |
431 | "----" | |
432 | ["Comment-out Region" fortran-comment-region mark-active] | |
433 | ["Uncomment-out region" | |
434 | (fortran-comment-region (region-beginning) (region-end) 1) | |
435 | mark-active] | |
436 | ["Indent Region" indent-region mark-active] | |
437 | ["Indent Subprogram" fortran-indent-subprogram t] | |
438 | "----" | |
439 | ["Beginning of Subprogram" beginning-of-fortran-subprogram t] | |
440 | ["End of Subprogram" end-of-fortran-subprogram t] | |
441 | ("Mark" | |
442 | ["Subprogram" mark-fortran-subprogram t] | |
443 | ["IF Block" fortran-mark-if t] | |
444 | ["DO Block" fortran-mark-do t]) | |
445 | ["Narrow to Subprogram" fortran-narrow-to-subprogram t] | |
446 | ["Widen" widen t] | |
447 | "----" | |
448 | ["Temporary column ruler" fortran-column-ruler t] | |
449 | ["72-column window" fortran-window-create t] | |
450 | ["Full Width Window" | |
451 | (enlarge-window-horizontally (- (frame-width) (window-width))) | |
452 | (< (window-width) (frame-width))] | |
453 | ["Momentary 72-column window" fortran-window-create-momentarily t] | |
454 | "----" | |
455 | ["Break Line at Point" fortran-split-line t] | |
456 | ["Join Continuation Line" fortran-join-line t] | |
1eb6bf70 | 457 | ["Fill Statement/Comment" fill-paragraph t] |
7977773d DL |
458 | "----" |
459 | ["Add imenu menu" | |
460 | (progn (imenu-add-to-menubar "Index") | |
461 | ;; Prod menu bar to update -- is this the right way? | |
462 | (menu-bar-mode 1)) | |
463 | t])))) | |
3dd63760 JB |
464 | \f |
465 | (defvar fortran-mode-abbrev-table nil) | |
466 | (if fortran-mode-abbrev-table | |
467 | () | |
468 | (let ((ac abbrevs-changed)) | |
469 | (define-abbrev-table 'fortran-mode-abbrev-table ()) | |
470 | (define-abbrev fortran-mode-abbrev-table ";au" "automatic" nil) | |
471 | (define-abbrev fortran-mode-abbrev-table ";b" "byte" nil) | |
b8cbdf43 | 472 | (define-abbrev fortran-mode-abbrev-table ";bd" "block data" nil) |
3dd63760 JB |
473 | (define-abbrev fortran-mode-abbrev-table ";ch" "character" nil) |
474 | (define-abbrev fortran-mode-abbrev-table ";cl" "close" nil) | |
475 | (define-abbrev fortran-mode-abbrev-table ";c" "continue" nil) | |
476 | (define-abbrev fortran-mode-abbrev-table ";cm" "common" nil) | |
477 | (define-abbrev fortran-mode-abbrev-table ";cx" "complex" nil) | |
478 | (define-abbrev fortran-mode-abbrev-table ";df" "define" nil) | |
479 | (define-abbrev fortran-mode-abbrev-table ";di" "dimension" nil) | |
480 | (define-abbrev fortran-mode-abbrev-table ";do" "double" nil) | |
481 | (define-abbrev fortran-mode-abbrev-table ";dc" "double complex" nil) | |
482 | (define-abbrev fortran-mode-abbrev-table ";dp" "double precision" nil) | |
483 | (define-abbrev fortran-mode-abbrev-table ";dw" "do while" nil) | |
484 | (define-abbrev fortran-mode-abbrev-table ";e" "else" nil) | |
485 | (define-abbrev fortran-mode-abbrev-table ";ed" "enddo" nil) | |
486 | (define-abbrev fortran-mode-abbrev-table ";el" "elseif" nil) | |
487 | (define-abbrev fortran-mode-abbrev-table ";en" "endif" nil) | |
488 | (define-abbrev fortran-mode-abbrev-table ";eq" "equivalence" nil) | |
b8cbdf43 | 489 | (define-abbrev fortran-mode-abbrev-table ";ew" "endwhere" nil) |
3dd63760 JB |
490 | (define-abbrev fortran-mode-abbrev-table ";ex" "external" nil) |
491 | (define-abbrev fortran-mode-abbrev-table ";ey" "entry" nil) | |
492 | (define-abbrev fortran-mode-abbrev-table ";f" "format" nil) | |
493 | (define-abbrev fortran-mode-abbrev-table ";fa" ".false." nil) | |
494 | (define-abbrev fortran-mode-abbrev-table ";fu" "function" nil) | |
495 | (define-abbrev fortran-mode-abbrev-table ";g" "goto" nil) | |
496 | (define-abbrev fortran-mode-abbrev-table ";im" "implicit" nil) | |
497 | (define-abbrev fortran-mode-abbrev-table ";ib" "implicit byte" nil) | |
498 | (define-abbrev fortran-mode-abbrev-table ";ic" "implicit complex" nil) | |
499 | (define-abbrev fortran-mode-abbrev-table ";ich" "implicit character" nil) | |
500 | (define-abbrev fortran-mode-abbrev-table ";ii" "implicit integer" nil) | |
501 | (define-abbrev fortran-mode-abbrev-table ";il" "implicit logical" nil) | |
502 | (define-abbrev fortran-mode-abbrev-table ";ir" "implicit real" nil) | |
503 | (define-abbrev fortran-mode-abbrev-table ";inc" "include" nil) | |
504 | (define-abbrev fortran-mode-abbrev-table ";in" "integer" nil) | |
505 | (define-abbrev fortran-mode-abbrev-table ";intr" "intrinsic" nil) | |
506 | (define-abbrev fortran-mode-abbrev-table ";l" "logical" nil) | |
507 | (define-abbrev fortran-mode-abbrev-table ";n" "namelist" nil) | |
508 | (define-abbrev fortran-mode-abbrev-table ";o" "open" nil) ; was ;op | |
509 | (define-abbrev fortran-mode-abbrev-table ";pa" "parameter" nil) | |
510 | (define-abbrev fortran-mode-abbrev-table ";pr" "program" nil) | |
511 | (define-abbrev fortran-mode-abbrev-table ";ps" "pause" nil) | |
512 | (define-abbrev fortran-mode-abbrev-table ";p" "print" nil) | |
513 | (define-abbrev fortran-mode-abbrev-table ";rc" "record" nil) | |
514 | (define-abbrev fortran-mode-abbrev-table ";re" "real" nil) | |
515 | (define-abbrev fortran-mode-abbrev-table ";r" "read" nil) | |
516 | (define-abbrev fortran-mode-abbrev-table ";rt" "return" nil) | |
517 | (define-abbrev fortran-mode-abbrev-table ";rw" "rewind" nil) | |
518 | (define-abbrev fortran-mode-abbrev-table ";s" "stop" nil) | |
519 | (define-abbrev fortran-mode-abbrev-table ";sa" "save" nil) | |
520 | (define-abbrev fortran-mode-abbrev-table ";st" "structure" nil) | |
521 | (define-abbrev fortran-mode-abbrev-table ";sc" "static" nil) | |
522 | (define-abbrev fortran-mode-abbrev-table ";su" "subroutine" nil) | |
523 | (define-abbrev fortran-mode-abbrev-table ";tr" ".true." nil) | |
524 | (define-abbrev fortran-mode-abbrev-table ";ty" "type" nil) | |
525 | (define-abbrev fortran-mode-abbrev-table ";vo" "volatile" nil) | |
526 | (define-abbrev fortran-mode-abbrev-table ";w" "write" nil) | |
b8cbdf43 | 527 | (define-abbrev fortran-mode-abbrev-table ";wh" "where" nil) |
3dd63760 JB |
528 | (setq abbrevs-changed ac))) |
529 | \f | |
1eb6bf70 DL |
530 | (eval-when-compile ; silence compiler |
531 | (defvar imenu-case-fold-search) | |
532 | (defvar imenu-syntax-alist)) | |
7977773d | 533 | |
3dd63760 JB |
534 | ;;;###autoload |
535 | (defun fortran-mode () | |
b8cbdf43 | 536 | "Major mode for editing Fortran code. |
60db3594 | 537 | \\[fortran-indent-line] indents the current Fortran line correctly. |
b8cbdf43 | 538 | DO statements must not share a common CONTINUE. |
3dd63760 | 539 | |
1eb6bf70 DL |
540 | Type ;? or ;\\[help-command] to display a list of built-in abbrevs for |
541 | Fortran keywords. | |
3dd63760 JB |
542 | |
543 | Key definitions: | |
544 | \\{fortran-mode-map} | |
545 | ||
546 | Variables controlling indentation style and extra features: | |
547 | ||
548 | comment-start | |
549 | Normally nil in Fortran mode. If you want to use comments | |
550 | starting with `!', set this to the string \"!\". | |
551 | fortran-do-indent | |
552 | Extra indentation within do blocks. (default 3) | |
553 | fortran-if-indent | |
554 | Extra indentation within if blocks. (default 3) | |
b8cbdf43 | 555 | fortran-structure-indent |
5a8d870b RS |
556 | Extra indentation within structure, union, map and interface blocks. |
557 | (default 3) | |
3dd63760 | 558 | fortran-continuation-indent |
b8cbdf43 | 559 | Extra indentation applied to continuation statements. (default 5) |
23029d77 | 560 | fortran-comment-line-extra-indent |
b8cbdf43 | 561 | Amount of extra indentation for text within full-line comments. (default 0) |
3dd63760 JB |
562 | fortran-comment-indent-style |
563 | nil means don't change indentation of text in full-line comments, | |
23029d77 JB |
564 | fixed means indent that text at `fortran-comment-line-extra-indent' beyond |
565 | the value of `fortran-minimum-statement-indent-fixed' (for fixed | |
566 | format continuation style) or `fortran-minimum-statement-indent-tab' | |
567 | (for TAB format continuation style). | |
568 | relative means indent at `fortran-comment-line-extra-indent' beyond the | |
3dd63760 JB |
569 | indentation for a line of code. |
570 | (default 'fixed) | |
571 | fortran-comment-indent-char | |
b8cbdf43 | 572 | Single-character string to be inserted instead of space for |
3dd63760 | 573 | full-line comment indentation. (default \" \") |
23029d77 JB |
574 | fortran-minimum-statement-indent-fixed |
575 | Minimum indentation for Fortran statements in fixed format mode. (def.6) | |
576 | fortran-minimum-statement-indent-tab | |
577 | Minimum indentation for Fortran statements in TAB format mode. (default 9) | |
3dd63760 JB |
578 | fortran-line-number-indent |
579 | Maximum indentation for line numbers. A line number will get | |
580 | less than this much indentation if necessary to avoid reaching | |
581 | column 5. (default 1) | |
582 | fortran-check-all-num-for-matching-do | |
b8cbdf43 | 583 | Non-nil causes all numbered lines to be treated as possible \"continue\" |
3dd63760 | 584 | statements. (default nil) |
60db3594 | 585 | fortran-blink-matching-if |
c5af0a18 RS |
586 | Non-nil causes \\[fortran-indent-line] on an ENDIF statement to blink on |
587 | matching IF. Also, from an ENDDO statement, blink on matching DO [WHILE] | |
588 | statement. (default nil) | |
3dd63760 JB |
589 | fortran-continuation-string |
590 | Single-character string to be inserted in column 5 of a continuation | |
591 | line. (default \"$\") | |
592 | fortran-comment-region | |
60db3594 | 593 | String inserted by \\[fortran-comment-region] at start of each line in |
3dd63760 JB |
594 | region. (default \"c$$$\") |
595 | fortran-electric-line-number | |
60db3594 | 596 | Non-nil causes line number digits to be moved to the correct column |
3dd63760 | 597 | as typed. (default t) |
b8cbdf43 | 598 | fortran-break-before-delimiters |
1eb6bf70 | 599 | Non-nil causes `fortran-fill' to break lines before delimiters. |
b8cbdf43 | 600 | (default t) |
3dd63760 | 601 | |
b8cbdf43 | 602 | Turning on Fortran mode calls the value of the variable `fortran-mode-hook' |
3dd63760 JB |
603 | with no args, if that value is non-nil." |
604 | (interactive) | |
605 | (kill-all-local-variables) | |
3dd63760 JB |
606 | (setq local-abbrev-table fortran-mode-abbrev-table) |
607 | (set-syntax-table fortran-mode-syntax-table) | |
f3d4eb7b | 608 | ;; Font Lock mode support. |
f408b027 SM |
609 | (make-local-variable 'font-lock-defaults) |
610 | (setq font-lock-defaults '((fortran-font-lock-keywords | |
611 | fortran-font-lock-keywords-1 | |
612 | fortran-font-lock-keywords-2 | |
613 | fortran-font-lock-keywords-3) | |
7977773d | 614 | t t ((?/ . "$/") ("_$" . "w")))) |
b8cbdf43 RS |
615 | (make-local-variable 'fortran-break-before-delimiters) |
616 | (setq fortran-break-before-delimiters t) | |
3dd63760 JB |
617 | (make-local-variable 'indent-line-function) |
618 | (setq indent-line-function 'fortran-indent-line) | |
e41b2db1 ER |
619 | (make-local-variable 'comment-indent-function) |
620 | (setq comment-indent-function 'fortran-comment-hook) | |
3dd63760 JB |
621 | (make-local-variable 'comment-line-start-skip) |
622 | (setq comment-line-start-skip | |
b8cbdf43 | 623 | "^[Cc*]\\(\\([^ \t\n]\\)\\2\\2*\\)?[ \t]*\\|^#.*") |
3dd63760 JB |
624 | (make-local-variable 'comment-line-start) |
625 | (setq comment-line-start "c") | |
626 | (make-local-variable 'comment-start-skip) | |
627 | (setq comment-start-skip "![ \t]*") | |
628 | (make-local-variable 'comment-start) | |
629 | (setq comment-start nil) | |
630 | (make-local-variable 'require-final-newline) | |
631 | (setq require-final-newline t) | |
632 | (make-local-variable 'abbrev-all-caps) | |
633 | (setq abbrev-all-caps t) | |
634 | (make-local-variable 'indent-tabs-mode) | |
635 | (setq indent-tabs-mode nil) | |
23029d77 | 636 | ;;;(setq abbrev-mode t) ; ?? (abbrev-mode 1) instead?? |
1eb6bf70 | 637 | (set (make-local-variable 'fill-column) 72) |
3dd63760 JB |
638 | (use-local-map fortran-mode-map) |
639 | (setq mode-name "Fortran") | |
640 | (setq major-mode 'fortran-mode) | |
23029d77 JB |
641 | (make-local-variable 'fortran-comment-line-extra-indent) |
642 | (make-local-variable 'fortran-minimum-statement-indent-fixed) | |
643 | (make-local-variable 'fortran-minimum-statement-indent-tab) | |
644 | (make-local-variable 'fortran-column-ruler-fixed) | |
1eb6bf70 | 645 | (make-local-variable 'fortran-column-ruler-tab) |
23029d77 JB |
646 | (setq fortran-tab-mode-string " TAB-format") |
647 | (setq indent-tabs-mode (fortran-analyze-file-format)) | |
7977773d | 648 | (setq imenu-case-fold-search t) |
9645c179 DL |
649 | (make-local-variable 'imenu-generic-expression) |
650 | (setq imenu-generic-expression fortran-imenu-generic-expression) | |
7977773d | 651 | (setq imenu-syntax-alist '(("_$" . "w"))) |
1eb6bf70 DL |
652 | (set (make-local-variable 'fill-paragraph-function) 'fortran-fill-paragraph) |
653 | (set (make-local-variable 'indent-line-function) 'fortran-indent-line) | |
654 | (set (make-local-variable 'indent-region-function) | |
655 | (lambda (start end) | |
656 | (let (fortran-blink-matching-if ; avoid blinking delay | |
657 | indent-region-function) | |
658 | (indent-region start end nil)))) | |
3dd63760 JB |
659 | (run-hooks 'fortran-mode-hook)) |
660 | \f | |
661 | (defun fortran-comment-hook () | |
662 | (save-excursion | |
663 | (skip-chars-backward " \t") | |
664 | (max (+ 1 (current-column)) | |
665 | comment-column))) | |
666 | ||
667 | (defun fortran-indent-comment () | |
668 | "Align or create comment on current line. | |
669 | Existing comments of all types are recognized and aligned. | |
670 | If the line has no comment, a side-by-side comment is inserted and aligned | |
7977773d | 671 | if the value of `comment-start' is not nil. |
3dd63760 JB |
672 | Otherwise, a separate-line comment is inserted, on this line |
673 | or on a new line inserted before this line if this line is not blank." | |
674 | (interactive) | |
675 | (beginning-of-line) | |
676 | ;; Recognize existing comments of either kind. | |
677 | (cond ((looking-at comment-line-start-skip) | |
678 | (fortran-indent-line)) | |
23029d77 | 679 | ((fortran-find-comment-start-skip) ; catches any inline comment and |
b8cbdf43 RS |
680 | ; leaves point after comment-start-skip |
681 | (if comment-start-skip | |
682 | (progn (goto-char (match-beginning 0)) | |
683 | (if (not (= (current-column) (fortran-comment-hook))) | |
684 | (progn (delete-horizontal-space) | |
685 | (indent-to (fortran-comment-hook))))) | |
686 | (end-of-line))) ; otherwise goto end of line or sth else? | |
3dd63760 JB |
687 | ;; No existing comment. |
688 | ;; If side-by-side comments are defined, insert one, | |
689 | ;; unless line is now blank. | |
690 | ((and comment-start (not (looking-at "^[ \t]*$"))) | |
691 | (end-of-line) | |
692 | (delete-horizontal-space) | |
693 | (indent-to (fortran-comment-hook)) | |
694 | (insert comment-start)) | |
695 | ;; Else insert separate-line comment, making a new line if nec. | |
696 | (t | |
697 | (if (looking-at "^[ \t]*$") | |
698 | (delete-horizontal-space) | |
699 | (beginning-of-line) | |
700 | (insert "\n") | |
701 | (forward-char -1)) | |
702 | (insert comment-line-start) | |
703 | (insert-char (if (stringp fortran-comment-indent-char) | |
704 | (aref fortran-comment-indent-char 0) | |
b8cbdf43 | 705 | fortran-comment-indent-char) |
1eb6bf70 | 706 | (- (fortran-calculate-indent) (current-column)))))) |
3dd63760 JB |
707 | |
708 | (defun fortran-comment-region (beg-region end-region arg) | |
709 | "Comments every line in the region. | |
7977773d | 710 | Puts `fortran-comment-region' at the beginning of every line in the region. |
60db3594 | 711 | BEG-REGION and END-REGION are args which specify the region boundaries. |
3dd63760 JB |
712 | With non-nil ARG, uncomments the region." |
713 | (interactive "*r\nP") | |
714 | (let ((end-region-mark (make-marker)) (save-point (point-marker))) | |
715 | (set-marker end-region-mark end-region) | |
716 | (goto-char beg-region) | |
717 | (beginning-of-line) | |
718 | (if (not arg) ;comment the region | |
719 | (progn (insert fortran-comment-region) | |
720 | (while (and (= (forward-line 1) 0) | |
721 | (< (point) end-region-mark)) | |
722 | (insert fortran-comment-region))) | |
723 | (let ((com (regexp-quote fortran-comment-region))) ;uncomment the region | |
724 | (if (looking-at com) | |
725 | (delete-region (point) (match-end 0))) | |
726 | (while (and (= (forward-line 1) 0) | |
727 | (< (point) end-region-mark)) | |
728 | (if (looking-at com) | |
729 | (delete-region (point) (match-end 0)))))) | |
730 | (goto-char save-point) | |
731 | (set-marker end-region-mark nil) | |
732 | (set-marker save-point nil))) | |
733 | \f | |
734 | (defun fortran-abbrev-start () | |
60db3594 | 735 | "Typing ;\\[help-command] or ;? lists all the Fortran abbrevs. |
3dd63760 JB |
736 | Any other key combination is executed normally." |
737 | (interactive) | |
738 | (let (c) | |
739 | (insert last-command-char) | |
d654e8ce RS |
740 | (if (or (eq (setq c (read-event)) ??) ;insert char if not equal to `?' |
741 | (eq c help-char)) | |
3dd63760 | 742 | (fortran-abbrev-help) |
dbc4e1c1 | 743 | (setq unread-command-events (list c))))) |
3dd63760 JB |
744 | |
745 | (defun fortran-abbrev-help () | |
746 | "List the currently defined abbrevs in Fortran mode." | |
747 | (interactive) | |
748 | (message "Listing abbrev table...") | |
e80f2147 | 749 | (display-buffer (fortran-prepare-abbrev-list-buffer)) |
3dd63760 JB |
750 | (message "Listing abbrev table...done")) |
751 | ||
e80f2147 RS |
752 | (defun fortran-prepare-abbrev-list-buffer () |
753 | (save-excursion | |
754 | (set-buffer (get-buffer-create "*Abbrevs*")) | |
755 | (erase-buffer) | |
4632a893 | 756 | (insert-abbrev-table-description 'fortran-mode-abbrev-table t) |
e80f2147 RS |
757 | (goto-char (point-min)) |
758 | (set-buffer-modified-p nil) | |
759 | (edit-abbrevs-mode)) | |
760 | (get-buffer-create "*Abbrevs*")) | |
761 | ||
3dd63760 | 762 | (defun fortran-column-ruler () |
7977773d | 763 | "Insert a column ruler momentarily above current line, till next keystroke. |
5a8d870b RS |
764 | The ruler is defined by the value of `fortran-column-ruler-fixed' when in fixed |
765 | format mode, and `fortran-column-ruler-tab' when in TAB format mode. | |
3dd63760 JB |
766 | The key typed is executed unless it is SPC." |
767 | (interactive) | |
60db3594 | 768 | (momentary-string-display |
23029d77 JB |
769 | (if indent-tabs-mode |
770 | fortran-column-ruler-tab | |
771 | fortran-column-ruler-fixed) | |
772 | (save-excursion | |
60db3594 | 773 | (beginning-of-line) |
23029d77 JB |
774 | (if (eq (window-start (selected-window)) |
775 | (window-point (selected-window))) | |
776 | (progn (forward-line) (point)) | |
777 | (point))) | |
3dd63760 JB |
778 | nil "Type SPC or any command to erase ruler.")) |
779 | ||
780 | (defun fortran-window-create () | |
7977773d | 781 | "Make the window 72 columns wide. |
fe668515 | 782 | See also `fortran-window-create-momentarily'." |
3dd63760 JB |
783 | (interactive) |
784 | (condition-case error | |
785 | (progn | |
786 | (let ((window-min-width 2)) | |
23029d77 JB |
787 | (if (< (window-width) (frame-width)) |
788 | (enlarge-window-horizontally (- (frame-width) | |
3dd63760 JB |
789 | (window-width) 1))) |
790 | (split-window-horizontally 73) | |
791 | (other-window 1) | |
792 | (switch-to-buffer " fortran-window-extra" t) | |
793 | (select-window (previous-window)))) | |
b8cbdf43 | 794 | (error (message "No room for Fortran window.") |
3dd63760 JB |
795 | 'error))) |
796 | ||
797 | (defun fortran-window-create-momentarily (&optional arg) | |
7977773d | 798 | "Momentarily make the window 72 columns wide. |
3dd63760 | 799 | Optional ARG non-nil and non-unity disables the momentary feature. |
fe668515 | 800 | See also `fortran-window-create'." |
3dd63760 JB |
801 | (interactive "p") |
802 | (if (or (not arg) | |
803 | (= arg 1)) | |
804 | (save-window-excursion | |
805 | (if (not (equal (fortran-window-create) 'error)) | |
806 | (progn (message "Type SPC to continue editing.") | |
d654e8ce | 807 | (let ((char (read-event))) |
3dd63760 | 808 | (or (equal char (string-to-char " ")) |
dbc4e1c1 | 809 | (setq unread-command-events (list char))))))) |
3dd63760 JB |
810 | (fortran-window-create))) |
811 | ||
812 | (defun fortran-split-line () | |
813 | "Break line at point and insert continuation marker and alignment." | |
814 | (interactive) | |
815 | (delete-horizontal-space) | |
816 | (if (save-excursion (beginning-of-line) (looking-at comment-line-start-skip)) | |
817 | (insert "\n" comment-line-start " ") | |
23029d77 | 818 | (if indent-tabs-mode |
1eb6bf70 DL |
819 | (insert "\n\t" (fortran-numerical-continuation-char)) |
820 | (insert "\n " fortran-continuation-string))) ; Space after \n important | |
821 | (fortran-indent-line)) ; when the cont string is C, c or *. | |
822 | ||
823 | (defun fortran-remove-continuation () | |
824 | (if (looking-at "\\( [^ 0\n]\\|\t[1-9]\\|&\\)") | |
825 | (progn (replace-match "") | |
826 | (delete-indentation) | |
827 | t))) | |
3dd63760 | 828 | |
7977773d DL |
829 | (defun fortran-join-line () |
830 | "Join a continuation line to the previous one and re-indent." | |
831 | (interactive) | |
832 | (save-excursion | |
833 | (beginning-of-line) | |
1eb6bf70 DL |
834 | (if (not (fortran-remove-continuation)) |
835 | (error "Not a continuation line")) | |
7977773d DL |
836 | (fortran-indent-line))) |
837 | ||
3dd63760 | 838 | (defun fortran-numerical-continuation-char () |
b56eb7c9 | 839 | "Return a digit for tab-digit style of continuation lines. |
3dd63760 JB |
840 | If, previous line is a tab-digit continuation line, returns that digit |
841 | plus one. Otherwise return 1. Zero not allowed." | |
842 | (save-excursion | |
843 | (forward-line -1) | |
844 | (if (looking-at "\t[1-9]") | |
845 | (+ ?1 (% (- (char-after (+ (point) 1)) ?0) 9)) | |
846 | ?1))) | |
847 | ||
848 | (defun delete-horizontal-regexp (chars) | |
849 | "Delete all characters in CHARS around point. | |
850 | CHARS is like the inside of a [...] in a regular expression | |
851 | except that ] is never special and \ quotes ^, - or \." | |
852 | (interactive "*s") | |
853 | (skip-chars-backward chars) | |
854 | (delete-region (point) (progn (skip-chars-forward chars) (point)))) | |
855 | ||
556dd629 | 856 | (put 'fortran-electric-line-number 'delete-selection t) |
3dd63760 JB |
857 | (defun fortran-electric-line-number (arg) |
858 | "Self insert, but if part of a Fortran line number indent it automatically. | |
7977773d | 859 | Auto-indent does not happen if a numeric ARG is used." |
3dd63760 JB |
860 | (interactive "P") |
861 | (if (or arg (not fortran-electric-line-number)) | |
60db3594 | 862 | (if arg |
b8cbdf43 | 863 | (self-insert-command (prefix-numeric-value arg)) |
3dd63760 JB |
864 | (self-insert-command 1)) |
865 | (if (or (and (= 5 (current-column)) | |
866 | (save-excursion | |
867 | (beginning-of-line) | |
868 | (looking-at " ")));In col 5 with only spaces to left. | |
23029d77 | 869 | (and (= (if indent-tabs-mode |
1eb6bf70 DL |
870 | fortran-minimum-statement-indent-tab |
871 | fortran-minimum-statement-indent-fixed) (current-column)) | |
3dd63760 JB |
872 | (save-excursion |
873 | (beginning-of-line) | |
874 | (looking-at "\t"));In col 8 with a single tab to the left. | |
875 | (not (or (eq last-command 'fortran-indent-line) | |
876 | (eq last-command | |
aa4ed68c | 877 | 'fortran-indent-new-line)))) |
3dd63760 JB |
878 | (save-excursion |
879 | (re-search-backward "[^ \t0-9]" | |
880 | (save-excursion | |
881 | (beginning-of-line) | |
882 | (point)) | |
1eb6bf70 DL |
883 | t)) ;not a line number |
884 | (looking-at "[0-9]")) ;within a line number | |
b8cbdf43 | 885 | (self-insert-command (prefix-numeric-value arg)) |
3dd63760 JB |
886 | (skip-chars-backward " \t") |
887 | (insert last-command-char) | |
888 | (fortran-indent-line)))) | |
889 | \f | |
1eb6bf70 DL |
890 | (defvar fortran-end-prog-re1 |
891 | "end\\b[ \t]*\\(\\(program\\|subroutine\\|function\\)[ \t]*\\)?[^ \t=\(a-z]") | |
892 | (defvar fortran-end-prog-re | |
893 | (concat "^[ \t0-9]*" fortran-end-prog-re1)) | |
894 | ||
3dd63760 | 895 | (defun beginning-of-fortran-subprogram () |
b8cbdf43 | 896 | "Moves point to the beginning of the current Fortran subprogram." |
3dd63760 JB |
897 | (interactive) |
898 | (let ((case-fold-search t)) | |
899 | (beginning-of-line -1) | |
1eb6bf70 DL |
900 | (if (re-search-backward fortran-end-prog-re nil 'move) |
901 | (forward-line)))) | |
3dd63760 JB |
902 | |
903 | (defun end-of-fortran-subprogram () | |
b8cbdf43 | 904 | "Moves point to the end of the current Fortran subprogram." |
3dd63760 JB |
905 | (interactive) |
906 | (let ((case-fold-search t)) | |
907 | (beginning-of-line 2) | |
1eb6bf70 | 908 | (re-search-forward fortran-end-prog-re nil 'move) |
3dd63760 | 909 | (goto-char (match-beginning 0)) |
1eb6bf70 | 910 | (forward-line))) |
3dd63760 JB |
911 | |
912 | (defun mark-fortran-subprogram () | |
60db3594 | 913 | "Put mark at end of Fortran subprogram, point at beginning. |
3dd63760 JB |
914 | The marks are pushed." |
915 | (interactive) | |
916 | (end-of-fortran-subprogram) | |
917 | (push-mark (point)) | |
918 | (beginning-of-fortran-subprogram)) | |
b8cbdf43 | 919 | |
3dd63760 | 920 | (defun fortran-previous-statement () |
b8cbdf43 RS |
921 | "Moves point to beginning of the previous Fortran statement. |
922 | Returns `first-statement' if that statement is the first | |
3dd63760 JB |
923 | non-comment Fortran statement in the file, and nil otherwise." |
924 | (interactive) | |
925 | (let (not-first-statement continue-test) | |
926 | (beginning-of-line) | |
927 | (setq continue-test | |
b8cbdf43 RS |
928 | (and |
929 | (not (looking-at comment-line-start-skip)) | |
930 | (or (looking-at | |
3dd63760 | 931 | (concat "[ \t]*" (regexp-quote fortran-continuation-string))) |
b8cbdf43 RS |
932 | (or (looking-at " [^ 0\n]") |
933 | (looking-at "\t[1-9]"))))) | |
3dd63760 JB |
934 | (while (and (setq not-first-statement (= (forward-line -1) 0)) |
935 | (or (looking-at comment-line-start-skip) | |
936 | (looking-at "[ \t]*$") | |
937 | (looking-at " [^ 0\n]") | |
938 | (looking-at "\t[1-9]") | |
939 | (looking-at (concat "[ \t]*" comment-start-skip))))) | |
940 | (cond ((and continue-test | |
941 | (not not-first-statement)) | |
942 | (message "Incomplete continuation statement.")) | |
60db3594 | 943 | (continue-test |
3dd63760 JB |
944 | (fortran-previous-statement)) |
945 | ((not not-first-statement) | |
946 | 'first-statement)))) | |
947 | ||
948 | (defun fortran-next-statement () | |
b8cbdf43 | 949 | "Moves point to beginning of the next Fortran statement. |
3dd63760 JB |
950 | Returns `last-statement' if that statement is the last |
951 | non-comment Fortran statement in the file, and nil otherwise." | |
952 | (interactive) | |
953 | (let (not-last-statement) | |
954 | (beginning-of-line) | |
b8cbdf43 RS |
955 | (while (and (setq not-last-statement |
956 | (and (= (forward-line 1) 0) | |
957 | (not (eobp)))) | |
3dd63760 JB |
958 | (or (looking-at comment-line-start-skip) |
959 | (looking-at "[ \t]*$") | |
960 | (looking-at " [^ 0\n]") | |
961 | (looking-at "\t[1-9]") | |
962 | (looking-at (concat "[ \t]*" comment-start-skip))))) | |
963 | (if (not not-last-statement) | |
964 | 'last-statement))) | |
7977773d DL |
965 | |
966 | (defun fortran-narrow-to-subprogram () | |
967 | "Make text outside the current subprogram invisible. | |
968 | The subprogram visible is the one that contains or follows point." | |
969 | (interactive) | |
970 | (save-excursion | |
971 | (mark-fortran-subprogram) | |
972 | (narrow-to-region (region-beginning) | |
973 | (region-end)))) | |
3dd63760 JB |
974 | \f |
975 | (defun fortran-blink-matching-if () | |
c5af0a18 | 976 | ;; From a Fortran ENDIF statement, blink the matching IF statement. |
1eb6bf70 DL |
977 | (let ((top-of-window (window-start)) |
978 | (endif-point (point)) | |
979 | (case-fold-search t) | |
980 | matching-if | |
981 | message) | |
3dd63760 JB |
982 | (if (save-excursion (beginning-of-line) |
983 | (skip-chars-forward " \t0-9") | |
984 | (looking-at "end[ \t]*if\\b")) | |
985 | (progn | |
c5af0a18 RS |
986 | (if (not (setq matching-if (fortran-beginning-if))) |
987 | (setq message "No matching if.") | |
988 | (if (< matching-if top-of-window) | |
989 | (save-excursion | |
990 | (goto-char matching-if) | |
991 | (beginning-of-line) | |
992 | (setq message | |
993 | (concat "Matches " | |
994 | (buffer-substring | |
995 | (point) (progn (end-of-line) (point)))))))) | |
3dd63760 | 996 | (if message |
b8cbdf43 | 997 | (message "%s" message) |
3dd63760 JB |
998 | (goto-char matching-if) |
999 | (sit-for 1) | |
1000 | (goto-char endif-point)))))) | |
947388af RS |
1001 | |
1002 | (defun fortran-blink-matching-do () | |
1003 | ;; From a Fortran ENDDO statement, blink on the matching DO or DO WHILE | |
1004 | ;; statement. This is basically copied from fortran-blink-matching-if. | |
1eb6bf70 DL |
1005 | (let ((top-of-window (window-start)) |
1006 | (enddo-point (point)) | |
1007 | (case-fold-search t) | |
1008 | matching-do | |
1009 | message) | |
947388af RS |
1010 | (if (save-excursion (beginning-of-line) |
1011 | (skip-chars-forward " \t0-9") | |
1012 | (looking-at "end[ \t]*do\\b")) | |
1013 | (progn | |
c5af0a18 RS |
1014 | (if (not (setq matching-do (fortran-beginning-do))) |
1015 | (setq message "No matching do.") | |
1016 | (if (< matching-do top-of-window) | |
1017 | (save-excursion | |
1018 | (goto-char matching-do) | |
1019 | (beginning-of-line) | |
1020 | (setq message | |
1021 | (concat "Matches " | |
1022 | (buffer-substring | |
1023 | (point) (progn (end-of-line) (point)))))))) | |
947388af RS |
1024 | (if message |
1025 | (message "%s" message) | |
1026 | (goto-char matching-do) | |
1027 | (sit-for 1) | |
1028 | (goto-char enddo-point)))))) | |
c5af0a18 RS |
1029 | |
1030 | (defun fortran-mark-do () | |
60db3594 | 1031 | "Put mark at end of Fortran DO [WHILE]-ENDDO construct, point at beginning. |
c5af0a18 RS |
1032 | The marks are pushed." |
1033 | (interactive) | |
1034 | (let (enddo-point do-point) | |
1035 | (if (setq enddo-point (fortran-end-do)) | |
1036 | (if (not (setq do-point (fortran-beginning-do))) | |
1037 | (message "No matching do.") | |
1038 | ;; Set mark, move point. | |
1039 | (goto-char enddo-point) | |
1040 | (push-mark) | |
1041 | (goto-char do-point))))) | |
1042 | ||
1043 | (defun fortran-end-do () | |
1044 | ;; Search forward for first unmatched ENDDO. Return point or nil. | |
1eb6bf70 DL |
1045 | (let ((case-fold-search t)) |
1046 | (if (save-excursion (beginning-of-line) | |
1047 | (skip-chars-forward " \t0-9") | |
1048 | (looking-at "end[ \t]*do\\b")) | |
1049 | ;; Sitting on one. | |
1050 | (match-beginning 0) | |
1051 | ;; Search for one. | |
1052 | (save-excursion | |
1053 | (let ((count 1)) | |
c5af0a18 | 1054 | (while (and (not (= count 0)) |
1eb6bf70 DL |
1055 | (not (eq (fortran-next-statement) 'last-statement)) |
1056 | ;; Keep local to subprogram | |
1057 | (not (looking-at fortran-end-prog-re))) | |
1058 | ||
1059 | (skip-chars-forward " \t0-9") | |
1060 | (cond ((looking-at "end[ \t]*do\\b") | |
1061 | (setq count (1- count))) | |
1062 | ((looking-at "\\(\\(\\sw\\|\\s_\\)+:[ \t]*\\)?do[ \t]+[^0-9]") | |
c5af0a18 RS |
1063 | (setq count (+ count 1))))) |
1064 | (and (= count 0) | |
1eb6bf70 DL |
1065 | ;; All pairs accounted for. |
1066 | (point))))))) | |
c5af0a18 RS |
1067 | |
1068 | (defun fortran-beginning-do () | |
1069 | ;; Search backwards for first unmatched DO [WHILE]. Return point or nil. | |
1eb6bf70 DL |
1070 | (let ((case-fold-search t)) |
1071 | (if (save-excursion (beginning-of-line) | |
1072 | (skip-chars-forward " \t0-9") | |
1073 | (looking-at "\\(\\(\\sw\\|\\s_\\)+:[ \t]*\\)?do[ \t]+")) | |
1074 | ;; Sitting on one. | |
1075 | (match-beginning 0) | |
1076 | ;; Search for one. | |
1077 | (save-excursion | |
1078 | (let ((count 1)) | |
c5af0a18 | 1079 | (while (and (not (= count 0)) |
1eb6bf70 DL |
1080 | (not (eq (fortran-previous-statement) 'first-statement)) |
1081 | ;; Keep local to subprogram | |
1082 | (not (looking-at fortran-end-prog-re))) | |
c5af0a18 | 1083 | |
1eb6bf70 DL |
1084 | (skip-chars-forward " \t0-9") |
1085 | (cond ((looking-at "\\(\\(\\sw\\|\\s_\\)+:[ \t]*\\)?do[ \t]+[^0-9]") | |
1086 | (setq count (1- count))) | |
1087 | ((looking-at "end[ \t]*do\\b") | |
1088 | (setq count (1+ count))))) | |
c5af0a18 RS |
1089 | |
1090 | (and (= count 0) | |
1eb6bf70 DL |
1091 | ;; All pairs accounted for. |
1092 | (point))))))) | |
c5af0a18 RS |
1093 | |
1094 | (defun fortran-mark-if () | |
1095 | "Put mark at end of Fortran IF-ENDIF construct, point at beginning. | |
1096 | The marks are pushed." | |
1097 | (interactive) | |
1098 | (let (endif-point if-point) | |
1099 | (if (setq endif-point (fortran-end-if)) | |
1100 | (if (not (setq if-point (fortran-beginning-if))) | |
1101 | (message "No matching if.") | |
1102 | ;; Set mark, move point. | |
1103 | (goto-char endif-point) | |
1104 | (push-mark) | |
1105 | (goto-char if-point))))) | |
1106 | ||
1eb6bf70 DL |
1107 | (defvar fortran-if-start-re "\\(\\(\\sw\\|\\s_\\)+:[ \t]*\\)?if[ \t]*(") |
1108 | ||
c5af0a18 RS |
1109 | (defun fortran-end-if () |
1110 | ;; Search forwards for first unmatched ENDIF. Return point or nil. | |
1eb6bf70 DL |
1111 | (let ((case-fold-search t)) |
1112 | (if (save-excursion (beginning-of-line) | |
1113 | (skip-chars-forward " \t0-9") | |
1114 | (looking-at "end[ \t]*if\\b")) | |
1115 | ;; Sitting on one. | |
1116 | (match-beginning 0) | |
1117 | ;; Search for one. The point has been already been moved to first | |
1118 | ;; letter on line but this should not cause troubles. | |
1119 | (save-excursion | |
1120 | (let ((count 1)) | |
c5af0a18 | 1121 | (while (and (not (= count 0)) |
1eb6bf70 DL |
1122 | (not (eq (fortran-next-statement) 'last-statement)) |
1123 | ;; Keep local to subprogram. | |
1124 | (not (looking-at fortran-end-prog-re))) | |
c5af0a18 | 1125 | |
1eb6bf70 DL |
1126 | (skip-chars-forward " \t0-9") |
1127 | (cond ((looking-at "end[ \t]*if\\b") | |
c5af0a18 RS |
1128 | (setq count (- count 1))) |
1129 | ||
1eb6bf70 DL |
1130 | ((looking-at fortran-if-start-re) |
1131 | (save-excursion | |
1132 | (if (or | |
1133 | (looking-at ".*)[ \t]*then\\b[ \t]*[^ \t(=a-z0-9]") | |
1134 | (let (then-test) ; Multi-line if-then. | |
1135 | (while | |
c5af0a18 | 1136 | (and (= (forward-line 1) 0) |
1eb6bf70 DL |
1137 | ;; Search forward for then. |
1138 | (or (looking-at " [^ 0\n]") | |
1139 | (looking-at "\t[1-9]")) | |
1140 | (not | |
1141 | (setq then-test | |
1142 | (looking-at | |
1143 | ".*then\\b[ \t]*[^ \t(=a-z0-9]"))))) | |
1144 | then-test)) | |
c5af0a18 RS |
1145 | (setq count (+ count 1))))))) |
1146 | ||
1147 | (and (= count 0) | |
1eb6bf70 DL |
1148 | ;; All pairs accounted for. |
1149 | (point))))))) | |
c5af0a18 RS |
1150 | |
1151 | (defun fortran-beginning-if () | |
1152 | ;; Search backwards for first unmatched IF-THEN. Return point or nil. | |
1eb6bf70 DL |
1153 | (let ((case-fold-search t)) |
1154 | (if (save-excursion | |
1155 | ;; May be sitting on multi-line if-then statement, first move to | |
1156 | ;; beginning of current statement. Note: `fortran-previous-statement' | |
1157 | ;; moves to previous statement *unless* current statement is first | |
1158 | ;; one. Only move forward if not first-statement. | |
1159 | (if (not (eq (fortran-previous-statement) 'first-statement)) | |
1160 | (fortran-next-statement)) | |
1161 | (skip-chars-forward " \t0-9") | |
1162 | (and | |
1163 | (looking-at fortran-if-start-re) | |
1164 | (save-match-data | |
1165 | (or (looking-at ".*)[ \t]*then\\b[ \t]*[^ \t(=a-z0-9]") | |
1166 | ;; Multi-line if-then. | |
1167 | (let (then-test) | |
1168 | (while | |
c5af0a18 | 1169 | (and (= (forward-line 1) 0) |
1eb6bf70 DL |
1170 | ;; Search forward for then. |
1171 | (or (looking-at " [^ 0\n]") | |
1172 | (looking-at "\t[1-9]")) | |
1173 | (not | |
1174 | (setq then-test | |
1175 | (looking-at | |
1176 | ".*then\\b[ \t]*[^ \t(=a-z0-9]"))))) | |
1177 | then-test))))) | |
1178 | ;; Sitting on one. | |
1179 | (match-beginning 0) | |
1180 | ;; Search for one. | |
1181 | (save-excursion | |
1182 | (let ((count 1)) | |
c5af0a18 | 1183 | (while (and (not (= count 0)) |
1eb6bf70 DL |
1184 | (not (eq (fortran-previous-statement) 'first-statement)) |
1185 | ;; Keep local to subprogram. | |
1186 | (not (looking-at fortran-end-prog-re))) | |
1187 | ||
1188 | (skip-chars-forward " \t0-9") | |
1189 | (cond ((looking-at fortran-if-start-re) | |
1190 | (save-excursion | |
1191 | (if (or | |
1192 | (looking-at ".*)[ \t]*then\\b[ \t]*[^ \t(=a-z0-9]") | |
1193 | (let (then-test) ; Multi-line if-then. | |
1194 | (while | |
c5af0a18 | 1195 | (and (= (forward-line 1) 0) |
1eb6bf70 DL |
1196 | ;; Search forward for then. |
1197 | (or (looking-at " [^ 0\n]") | |
1198 | (looking-at "\t[1-9]")) | |
1199 | (not | |
1200 | (setq then-test | |
1201 | (looking-at | |
1202 | ".*then\\b[ \t]*[^ \t(=a-z0-9]"))))) | |
1203 | then-test)) | |
c5af0a18 | 1204 | (setq count (- count 1))))) |
1eb6bf70 | 1205 | ((looking-at "end[ \t]*if\\b") |
c5af0a18 RS |
1206 | (setq count (+ count 1))))) |
1207 | ||
1208 | (and (= count 0) | |
1eb6bf70 DL |
1209 | ;; All pairs accounted for. |
1210 | (point))))))) | |
3dd63760 JB |
1211 | \f |
1212 | (defun fortran-indent-line () | |
7977773d | 1213 | "Indent current Fortran line based on its contents and on previous lines." |
3dd63760 | 1214 | (interactive) |
1eb6bf70 | 1215 | (let ((cfi (fortran-calculate-indent))) |
3dd63760 JB |
1216 | (save-excursion |
1217 | (beginning-of-line) | |
1218 | (if (or (not (= cfi (fortran-current-line-indentation))) | |
1219 | (and (re-search-forward "^[ \t]*[0-9]+" (+ (point) 4) t) | |
1220 | (not (fortran-line-number-indented-correctly-p)))) | |
1221 | (fortran-indent-to-column cfi) | |
1222 | (beginning-of-line) | |
1223 | (if (and (not (looking-at comment-line-start-skip)) | |
23029d77 | 1224 | (fortran-find-comment-start-skip)) |
3dd63760 JB |
1225 | (fortran-indent-comment)))) |
1226 | ;; Never leave point in left margin. | |
1227 | (if (< (current-column) cfi) | |
1228 | (move-to-column cfi)) | |
23029d77 | 1229 | (if (and auto-fill-function |
b8cbdf43 RS |
1230 | (> (save-excursion (end-of-line) (current-column)) fill-column)) |
1231 | (save-excursion | |
1232 | (end-of-line) | |
4254fe58 | 1233 | (fortran-fill))) |
3dd63760 | 1234 | (if fortran-blink-matching-if |
7977773d | 1235 | (progn |
947388af RS |
1236 | (fortran-blink-matching-if) |
1237 | (fortran-blink-matching-do))))) | |
3dd63760 | 1238 | |
aa4ed68c | 1239 | (defun fortran-indent-new-line () |
b8cbdf43 RS |
1240 | "Reindent the current Fortran line, insert a newline and indent the newline. |
1241 | An abbrev before point is expanded if `abbrev-mode' is non-nil." | |
3dd63760 JB |
1242 | (interactive) |
1243 | (if abbrev-mode (expand-abbrev)) | |
1244 | (save-excursion | |
1245 | (beginning-of-line) | |
1246 | (skip-chars-forward " \t") | |
1eb6bf70 DL |
1247 | (let ((case-fold-search t)) |
1248 | (if (or (looking-at "[0-9]") ;Reindent only where it is most | |
1249 | (looking-at "end") ;likely to be necessary | |
1250 | (looking-at "else") | |
1251 | (looking-at (regexp-quote fortran-continuation-string))) | |
1252 | (fortran-indent-line)))) | |
b8cbdf43 | 1253 | (newline) |
3dd63760 | 1254 | (fortran-indent-line)) |
b8cbdf43 | 1255 | |
3dd63760 | 1256 | (defun fortran-indent-subprogram () |
7977773d | 1257 | "Properly indent the Fortran subprogram which contains point." |
3dd63760 JB |
1258 | (interactive) |
1259 | (save-excursion | |
1260 | (mark-fortran-subprogram) | |
1261 | (message "Indenting subprogram...") | |
1262 | (indent-region (point) (mark) nil)) | |
1263 | (message "Indenting subprogram...done.")) | |
1264 | ||
1eb6bf70 | 1265 | (defun fortran-calculate-indent () |
b8cbdf43 | 1266 | "Calculates the Fortran indent column based on previous lines." |
3dd63760 JB |
1267 | (let (icol first-statement (case-fold-search t) |
1268 | (fortran-minimum-statement-indent | |
23029d77 JB |
1269 | (if indent-tabs-mode |
1270 | fortran-minimum-statement-indent-tab | |
1271 | fortran-minimum-statement-indent-fixed))) | |
3dd63760 JB |
1272 | (save-excursion |
1273 | (setq first-statement (fortran-previous-statement)) | |
1274 | (if first-statement | |
1275 | (setq icol fortran-minimum-statement-indent) | |
1276 | (progn | |
1277 | (if (= (point) (point-min)) | |
1278 | (setq icol fortran-minimum-statement-indent) | |
1279 | (setq icol (fortran-current-line-indentation))) | |
1280 | (skip-chars-forward " \t0-9") | |
1eb6bf70 | 1281 | (cond ((looking-at "\\(\\(\\sw\\|\\s_\\)+:[ \t]*\\)?if[ \t]*(") |
b8cbdf43 | 1282 | (if (or (looking-at ".*)[ \t]*then\\b[ \t]*[^ \t_$(=a-z0-9]") |
3dd63760 JB |
1283 | (let (then-test) ;multi-line if-then |
1284 | (while (and (= (forward-line 1) 0) | |
b8cbdf43 | 1285 | ;;search forward for then |
3dd63760 JB |
1286 | (or (looking-at " [^ 0\n]") |
1287 | (looking-at "\t[1-9]")) | |
1288 | (not (setq then-test (looking-at | |
b8cbdf43 RS |
1289 | ".*then\\b[ \t]\ |
1290 | *[^ \t_$(=a-z0-9]"))))) | |
3dd63760 JB |
1291 | then-test)) |
1292 | (setq icol (+ icol fortran-if-indent)))) | |
1eb6bf70 | 1293 | ((looking-at "else\\(if\\)?\\b") |
3dd63760 | 1294 | (setq icol (+ icol fortran-if-indent))) |
1eb6bf70 | 1295 | ((looking-at "select[ \t]*case[ \t](.*)") |
5a8d870b | 1296 | (setq icol (+ icol fortran-if-indent))) |
1eb6bf70 | 1297 | ((looking-at "case[ \t]*(.*)") |
5a8d870b RS |
1298 | (setq icol (+ icol fortran-if-indent))) |
1299 | ((looking-at "case[ \t]*default\\b") | |
1300 | (setq icol (+ icol fortran-if-indent))) | |
b8cbdf43 RS |
1301 | ((looking-at "\\(otherwise\\|else[ \t]*where\\)\\b") |
1302 | (setq icol (+ icol fortran-if-indent))) | |
f93f92f1 | 1303 | ((looking-at "where[ \t]*(.*)[ \t]*\n") |
b8cbdf43 | 1304 | (setq icol (+ icol fortran-if-indent))) |
3dd63760 JB |
1305 | ((looking-at "do\\b") |
1306 | (setq icol (+ icol fortran-do-indent))) | |
b8cbdf43 | 1307 | ((looking-at |
5a8d870b | 1308 | "\\(structure\\|union\\|map\\|interface\\)\\b[ \t]*[^ \t=(a-z]") |
b8cbdf43 | 1309 | (setq icol (+ icol fortran-structure-indent))) |
1eb6bf70 | 1310 | ((looking-at fortran-end-prog-re1) |
b8cbdf43 | 1311 | ;; Previous END resets indent to minimum |
3dd63760 JB |
1312 | (setq icol fortran-minimum-statement-indent)))))) |
1313 | (save-excursion | |
1314 | (beginning-of-line) | |
1315 | (cond ((looking-at "[ \t]*$")) | |
1316 | ((looking-at comment-line-start-skip) | |
3dd63760 | 1317 | (cond ((eq fortran-comment-indent-style 'relative) |
23029d77 | 1318 | (setq icol (+ icol fortran-comment-line-extra-indent))) |
3dd63760 | 1319 | ((eq fortran-comment-indent-style 'fixed) |
b8cbdf43 | 1320 | (setq icol (+ fortran-minimum-statement-indent |
23029d77 | 1321 | fortran-comment-line-extra-indent)))) |
b8cbdf43 | 1322 | (setq fortran-minimum-statement-indent 0)) |
3dd63760 | 1323 | ((or (looking-at (concat "[ \t]*" |
b8cbdf43 RS |
1324 | (regexp-quote |
1325 | fortran-continuation-string))) | |
3dd63760 JB |
1326 | (looking-at " [^ 0\n]") |
1327 | (looking-at "\t[1-9]")) | |
1328 | (setq icol (+ icol fortran-continuation-indent))) | |
b56eb7c9 RS |
1329 | ((looking-at "[ \t]*#") ; Check for cpp directive. |
1330 | (setq fortran-minimum-statement-indent 0 icol 0)) | |
3dd63760 JB |
1331 | (first-statement) |
1332 | ((and fortran-check-all-num-for-matching-do | |
1333 | (looking-at "[ \t]*[0-9]+") | |
1334 | (fortran-check-for-matching-do)) | |
1335 | (setq icol (- icol fortran-do-indent))) | |
1336 | (t | |
1337 | (skip-chars-forward " \t0-9") | |
1eb6bf70 | 1338 | (cond ((looking-at "end[ \t]*\\(if\\|select\\|where\\)\\b") |
3dd63760 | 1339 | (setq icol (- icol fortran-if-indent))) |
1eb6bf70 | 1340 | ((looking-at "else\\(if\\)?\\b") |
5a8d870b | 1341 | (setq icol (- icol fortran-if-indent))) |
1eb6bf70 | 1342 | ((looking-at "case[ \t]*\\((.*)\\|default\\>\\)") |
5a8d870b | 1343 | (setq icol (- icol fortran-if-indent))) |
b8cbdf43 RS |
1344 | ((looking-at "\\(otherwise\\|else[ \t]*where\\)\\b") |
1345 | (setq icol (- icol fortran-if-indent))) | |
3dd63760 JB |
1346 | ((and (looking-at "continue\\b") |
1347 | (fortran-check-for-matching-do)) | |
1348 | (setq icol (- icol fortran-do-indent))) | |
1349 | ((looking-at "end[ \t]*do\\b") | |
1350 | (setq icol (- icol fortran-do-indent))) | |
1eb6bf70 | 1351 | ((looking-at "end[ \t]*\ |
5a8d870b | 1352 | \\(structure\\|union\\|map\\|interface\\)\\b[ \t]*[^ \t=(a-z]") |
b8cbdf43 | 1353 | (setq icol (- icol fortran-structure-indent))) |
1eb6bf70 | 1354 | ((and (looking-at fortran-end-prog-re1) |
3dd63760 JB |
1355 | (not (= icol fortran-minimum-statement-indent))) |
1356 | (message "Warning: `end' not in column %d. Probably\ | |
1357 | an unclosed block." fortran-minimum-statement-indent)))))) | |
1358 | (max fortran-minimum-statement-indent icol))) | |
1359 | \f | |
1360 | (defun fortran-current-line-indentation () | |
1361 | "Indentation of current line, ignoring Fortran line number or continuation. | |
1362 | This is the column position of the first non-whitespace character | |
1363 | aside from the line number and/or column 5/8 line-continuation character. | |
1364 | For comment lines, returns indentation of the first | |
1365 | non-indentation text within the comment." | |
1366 | (save-excursion | |
1367 | (beginning-of-line) | |
1368 | (cond ((looking-at comment-line-start-skip) | |
1369 | (goto-char (match-end 0)) | |
1370 | (skip-chars-forward | |
b8cbdf43 RS |
1371 | (if (stringp fortran-comment-indent-char) |
1372 | fortran-comment-indent-char | |
1373 | (char-to-string fortran-comment-indent-char)))) | |
3dd63760 | 1374 | ((or (looking-at " [^ 0\n]") |
b8cbdf43 | 1375 | (looking-at "\t[1-9]")) |
3dd63760 JB |
1376 | (goto-char (match-end 0))) |
1377 | (t | |
1378 | ;; Move past line number. | |
b8cbdf43 RS |
1379 | (skip-chars-forward "[ \t0-9]");From Uli |
1380 | )) | |
3dd63760 JB |
1381 | ;; Move past whitespace. |
1382 | (skip-chars-forward " \t") | |
1383 | (current-column))) | |
1384 | ||
1385 | (defun fortran-indent-to-column (col) | |
7977773d | 1386 | "Indent current line with spaces to column COL. |
3dd63760 JB |
1387 | notes: 1) A non-zero/non-blank character in column 5 indicates a continuation |
1388 | line, and this continuation character is retained on indentation; | |
b8cbdf43 RS |
1389 | 2) If `fortran-continuation-string' is the first non-whitespace |
1390 | character, this is a continuation line; | |
3dd63760 JB |
1391 | 3) A non-continuation line which has a number as the first |
1392 | non-whitespace character is a numbered line. | |
b8cbdf43 | 1393 | 4) A TAB followed by a digit indicates a continuation line." |
3dd63760 JB |
1394 | (save-excursion |
1395 | (beginning-of-line) | |
1396 | (if (looking-at comment-line-start-skip) | |
1397 | (if fortran-comment-indent-style | |
1398 | (let ((char (if (stringp fortran-comment-indent-char) | |
1399 | (aref fortran-comment-indent-char 0) | |
b8cbdf43 | 1400 | fortran-comment-indent-char))) |
3dd63760 JB |
1401 | (goto-char (match-end 0)) |
1402 | (delete-horizontal-regexp (concat " \t" (char-to-string char))) | |
1403 | (insert-char char (- col (current-column))))) | |
1404 | (if (looking-at "\t[1-9]") | |
23029d77 | 1405 | (if indent-tabs-mode |
3dd63760 JB |
1406 | (goto-char (match-end 0)) |
1407 | (delete-char 2) | |
1408 | (insert " ") | |
1409 | (insert fortran-continuation-string)) | |
1410 | (if (looking-at " [^ 0\n]") | |
23029d77 | 1411 | (if indent-tabs-mode |
3dd63760 JB |
1412 | (progn (delete-char 6) |
1413 | (insert "\t") | |
1414 | (insert-char (fortran-numerical-continuation-char) 1)) | |
1415 | (forward-char 6)) | |
1416 | (delete-horizontal-space) | |
b8cbdf43 RS |
1417 | ;; Put line number in columns 0-4 |
1418 | ;; or put continuation character in column 5. | |
3dd63760 JB |
1419 | (cond ((eobp)) |
1420 | ((looking-at (regexp-quote fortran-continuation-string)) | |
23029d77 | 1421 | (if indent-tabs-mode |
3dd63760 | 1422 | (progn |
60db3594 | 1423 | (indent-to |
23029d77 JB |
1424 | (if indent-tabs-mode |
1425 | fortran-minimum-statement-indent-tab | |
1426 | fortran-minimum-statement-indent-fixed)) | |
3dd63760 JB |
1427 | (delete-char 1) |
1428 | (insert-char (fortran-numerical-continuation-char) 1)) | |
b8cbdf43 RS |
1429 | (indent-to 5) |
1430 | (forward-char 1))) | |
3dd63760 JB |
1431 | ((looking-at "[0-9]+") |
1432 | (let ((extra-space (- 5 (- (match-end 0) (point))))) | |
1433 | (if (< extra-space 0) | |
1434 | (message "Warning: line number exceeds 5-digit limit.") | |
1435 | (indent-to (min fortran-line-number-indent extra-space)))) | |
1436 | (skip-chars-forward "0-9"))))) | |
1437 | ;; Point is now after any continuation character or line number. | |
1438 | ;; Put body of statement where specified. | |
1439 | (delete-horizontal-space) | |
1440 | (indent-to col) | |
1441 | ;; Indent any comment following code on the same line. | |
1442 | (if (and comment-start-skip | |
23029d77 | 1443 | (fortran-find-comment-start-skip)) |
3dd63760 JB |
1444 | (progn (goto-char (match-beginning 0)) |
1445 | (if (not (= (current-column) (fortran-comment-hook))) | |
1446 | (progn (delete-horizontal-space) | |
1447 | (indent-to (fortran-comment-hook))))))))) | |
1448 | ||
1449 | (defun fortran-line-number-indented-correctly-p () | |
1450 | "Return t if current line's line number is correctly indented. | |
1451 | Do not call if there is no line number." | |
1452 | (save-excursion | |
1453 | (beginning-of-line) | |
1454 | (skip-chars-forward " \t") | |
1455 | (and (<= (current-column) fortran-line-number-indent) | |
1456 | (or (= (current-column) fortran-line-number-indent) | |
1457 | (progn (skip-chars-forward "0-9") | |
1458 | (= (current-column) 5)))))) | |
1459 | ||
1460 | (defun fortran-check-for-matching-do () | |
7977773d DL |
1461 | "When called from a numbered statement, return t if matching DO is found. |
1462 | Otherwise return nil." | |
3dd63760 JB |
1463 | (let (charnum |
1464 | (case-fold-search t)) | |
1465 | (save-excursion | |
1466 | (beginning-of-line) | |
1467 | (if (looking-at "[ \t]*[0-9]+") | |
1468 | (progn | |
1469 | (skip-chars-forward " \t") | |
1470 | (skip-chars-forward "0") ;skip past leading zeros | |
1471 | (setq charnum (buffer-substring (point) | |
1472 | (progn (skip-chars-forward "0-9") | |
1473 | (point)))) | |
1474 | (beginning-of-line) | |
1475 | (and (re-search-backward | |
1eb6bf70 | 1476 | (concat "\\(" fortran-end-prog-re "\\)\\|" |
f022dd89 SM |
1477 | "\\(^[ \t0-9]*do[ \t]*0*" charnum "\\b\\)\\|" |
1478 | "\\(^[ \t]*0*" charnum "\\b\\)") | |
3dd63760 JB |
1479 | nil t) |
1480 | (looking-at (concat "^[ \t0-9]*do[ \t]*0*" charnum)))))))) | |
1481 | ||
23029d77 | 1482 | (defun fortran-find-comment-start-skip () |
b8cbdf43 RS |
1483 | "Move to past `comment-start-skip' found on current line. |
1484 | Return t if `comment-start-skip' found, nil if not." | |
1eb6bf70 DL |
1485 | ;; In order to move point only if comment-start-skip is found, this |
1486 | ;; one uses a lot of save-excursions. Note that re-search-forward | |
1487 | ;; moves point even if comment-start-skip is inside a string-constant. | |
1488 | ;; Some code expects certain values for match-beginning and end | |
b8cbdf43 | 1489 | (interactive) |
f022dd89 SM |
1490 | (if (save-excursion |
1491 | (re-search-forward comment-start-skip | |
1492 | (save-excursion (end-of-line) (point)) t)) | |
1493 | (let ((save-match-beginning (match-beginning 0)) | |
1494 | (save-match-end (match-end 0))) | |
1495 | (if (fortran-is-in-string-p (match-beginning 0)) | |
1496 | (save-excursion | |
1497 | (goto-char save-match-end) | |
1498 | (fortran-find-comment-start-skip)) ; recurse for rest of line | |
1499 | (goto-char save-match-beginning) | |
b8cbdf43 | 1500 | (re-search-forward comment-start-skip |
f022dd89 SM |
1501 | (save-excursion (end-of-line) (point)) t) |
1502 | (goto-char (match-end 0)) | |
1503 | t)) | |
1504 | nil)) | |
1505 | ||
1eb6bf70 DL |
1506 | ;;From: simon@gnu (Simon Marshall) |
1507 | ;; Find the next ! not in a string. | |
f022dd89 SM |
1508 | (defun fortran-match-!-comment (limit) |
1509 | (let (found) | |
1510 | (while (and (setq found (search-forward "!" limit t)) | |
1511 | (fortran-is-in-string-p (point)))) | |
1512 | (if (not found) | |
1513 | nil | |
1514 | ;; Cheaper than `looking-at' "!.*". | |
eef4375a | 1515 | (set-match-data |
f022dd89 SM |
1516 | (list (1- (point)) (progn (end-of-line) (min (point) limit)))) |
1517 | t))) | |
1518 | ||
1519 | ;; The above function is about 10% faster than the below... | |
1520 | ;;(defun fortran-match-!-comment (limit) | |
1521 | ;; (let (found) | |
1522 | ;; (while (and (setq found (re-search-forward "!.*" limit t)) | |
1523 | ;; (fortran-is-in-string-p (match-beginning 0)))) | |
1524 | ;; found)) | |
b8cbdf43 | 1525 | |
1eb6bf70 DL |
1526 | ;;From: ralf@up3aud1.gwdg.de (Ralf Fassel) |
1527 | ;; Test if TAB format continuation lines work. | |
b56eb7c9 | 1528 | (defun fortran-is-in-string-p (where) |
7977773d | 1529 | "Return non-nil iff WHERE (a buffer position) is inside a Fortran string." |
b56eb7c9 RS |
1530 | (save-excursion |
1531 | (goto-char where) | |
1532 | (cond | |
1533 | ((bolp) nil) ; bol is never inside a string | |
1534 | ((save-excursion ; comment lines too | |
1eb6bf70 DL |
1535 | (beginning-of-line) |
1536 | (looking-at comment-line-start-skip)) nil) | |
b56eb7c9 RS |
1537 | (t (let (;; ok, serious now. Init some local vars: |
1538 | (parse-state '(0 nil nil nil nil nil 0)) | |
1539 | (quoted-comment-start (if comment-start | |
1540 | (regexp-quote comment-start))) | |
1541 | (not-done t) | |
1542 | parse-limit | |
1543 | end-of-line | |
1544 | ) | |
1545 | ;; move to start of current statement | |
1546 | (fortran-next-statement) | |
1547 | (fortran-previous-statement) | |
1548 | ;; now parse up to WHERE | |
1549 | (while not-done | |
1550 | (if (or ;; skip to next line if: | |
1551 | ;; - comment line? | |
1552 | (looking-at comment-line-start-skip) | |
1553 | ;; - at end of line? | |
1554 | (eolp) | |
1555 | ;; - not in a string and after comment-start? | |
1556 | (and (not (nth 3 parse-state)) | |
1557 | comment-start | |
1558 | (equal comment-start | |
1559 | (char-to-string (preceding-char))))) | |
1eb6bf70 | 1560 | (if (> (forward-line) 0) |
b56eb7c9 RS |
1561 | (setq not-done nil)) |
1562 | ;; else: | |
1563 | ;; if we are at beginning of code line, skip any | |
1564 | ;; whitespace, labels and tab continuation markers. | |
1565 | (if (bolp) (skip-chars-forward " \t0-9")) | |
1566 | ;; if we are in column <= 5 now, check for continuation char | |
1567 | (cond ((= 5 (current-column)) (forward-char 1)) | |
1568 | ((and (< (current-column) 5) | |
1569 | (equal fortran-continuation-string | |
1570 | (char-to-string (following-char))) | |
1571 | (forward-char 1)))) | |
1572 | ;; find out parse-limit from here | |
1573 | (setq end-of-line (save-excursion (end-of-line)(point))) | |
1574 | (setq parse-limit (min where end-of-line)) | |
1575 | ;; parse max up to comment-start, if non-nil and in current line | |
1576 | (if comment-start | |
1577 | (save-excursion | |
1578 | (if (re-search-forward quoted-comment-start end-of-line t) | |
1579 | (setq parse-limit (min (point) parse-limit))))) | |
1580 | ;; now parse if still in limits | |
1581 | (if (< (point) where) | |
1582 | (setq parse-state (parse-partial-sexp | |
1583 | (point) parse-limit nil nil parse-state)) | |
1584 | (setq not-done nil)) | |
1585 | )) | |
1586 | ;; result is | |
1587 | (nth 3 parse-state)))))) | |
b8cbdf43 RS |
1588 | |
1589 | (defun fortran-auto-fill-mode (arg) | |
1590 | "Toggle fortran-auto-fill mode. | |
1591 | With ARG, turn `fortran-auto-fill' mode on iff ARG is positive. | |
1592 | In `fortran-auto-fill' mode, inserting a space at a column beyond `fill-column' | |
1593 | automatically breaks the line at a previous space." | |
1594 | (interactive "P") | |
23029d77 | 1595 | (prog1 (setq auto-fill-function |
b8cbdf43 | 1596 | (if (if (null arg) |
23029d77 | 1597 | (not auto-fill-function) |
b8cbdf43 | 1598 | (> (prefix-numeric-value arg) 0)) |
1eb6bf70 | 1599 | #'fortran-do-auto-fill |
b8cbdf43 | 1600 | nil)) |
a716ac73 | 1601 | (force-mode-line-update))) |
b8cbdf43 RS |
1602 | |
1603 | (defun fortran-do-auto-fill () | |
4254fe58 RS |
1604 | (if (> (current-column) fill-column) |
1605 | (fortran-indent-line))) | |
1606 | ||
1607 | (defun fortran-fill () | |
b8cbdf43 RS |
1608 | (interactive) |
1609 | (let* ((opoint (point)) | |
1610 | (bol (save-excursion (beginning-of-line) (point))) | |
1611 | (eol (save-excursion (end-of-line) (point))) | |
1612 | (bos (min eol (+ bol (fortran-current-line-indentation)))) | |
1613 | (quote | |
1614 | (save-excursion | |
1615 | (goto-char bol) | |
1616 | (if (looking-at comment-line-start-skip) | |
1617 | nil ; OK to break quotes on comment lines. | |
1618 | (move-to-column fill-column) | |
1eb6bf70 DL |
1619 | (if (fortran-is-in-string-p (point)) |
1620 | (save-excursion (re-search-backward "\\S\"\\s\"\\S\"" bol t) | |
1621 | (if fortran-break-before-delimiters | |
1622 | (point) | |
1623 | (1+ (point)))))))) | |
b8cbdf43 RS |
1624 | ;; decide where to split the line. If a position for a quoted |
1625 | ;; string was found above then use that, else break the line | |
1626 | ;; before the last delimiter. | |
eb8c3be9 | 1627 | ;; Delimiters are whitespace, commas, and operators. |
b8cbdf43 | 1628 | ;; Will break before a pair of *'s. |
b8cbdf43 RS |
1629 | (fill-point |
1630 | (or quote | |
1631 | (save-excursion | |
1632 | (move-to-column (1+ fill-column)) | |
1633 | (skip-chars-backward "^ \t\n,'+-/*=)" | |
1634 | ;;; (if fortran-break-before-delimiters | |
1635 | ;;; "^ \t\n,'+-/*=" "^ \t\n,'+-/*=)") | |
1636 | ) | |
1637 | (if (<= (point) (1+ bos)) | |
1638 | (progn | |
1639 | (move-to-column (1+ fill-column)) | |
1eb6bf70 | 1640 | ;;what is this doing??? |
b8cbdf43 RS |
1641 | (if (not (re-search-forward "[\t\n,'+-/*)=]" eol t)) |
1642 | (goto-char bol)))) | |
1643 | (if (bolp) | |
1644 | (re-search-forward "[ \t]" opoint t) | |
1eb6bf70 DL |
1645 | (backward-char) |
1646 | (if (looking-at "\\s\"") | |
1647 | (forward-char) | |
b8cbdf43 RS |
1648 | (skip-chars-backward " \t\*"))) |
1649 | (if fortran-break-before-delimiters | |
1650 | (point) | |
1eb6bf70 | 1651 | (1+ (point))))))) |
b8cbdf43 RS |
1652 | ;; if we are in an in-line comment, don't break unless the |
1653 | ;; line of code is longer than it should be. Otherwise | |
1654 | ;; break the line at the column computed above. | |
1655 | ;; | |
23029d77 | 1656 | ;; Need to use fortran-find-comment-start-skip to make sure that quoted !'s |
b8cbdf43 RS |
1657 | ;; don't prevent a break. |
1658 | (if (not (or (save-excursion | |
1659 | (if (and (re-search-backward comment-start-skip bol t) | |
23029d77 | 1660 | (not (fortran-is-in-string-p (point)))) |
b8cbdf43 RS |
1661 | (progn |
1662 | (skip-chars-backward " \t") | |
1663 | (< (current-column) (1+ fill-column))))) | |
1664 | (save-excursion | |
1665 | (goto-char fill-point) | |
1666 | (bolp)))) | |
1667 | (if (> (save-excursion | |
1668 | (goto-char fill-point) (current-column)) | |
1669 | (1+ fill-column)) | |
1670 | (progn (goto-char fill-point) | |
1671 | (fortran-break-line)) | |
1672 | (save-excursion | |
1673 | (if (> (save-excursion | |
60db3594 | 1674 | (goto-char fill-point) |
b8cbdf43 | 1675 | (current-column)) |
1eb6bf70 | 1676 | (+ (fortran-calculate-indent) fortran-continuation-indent)) |
b8cbdf43 RS |
1677 | (progn |
1678 | (goto-char fill-point) | |
1679 | (fortran-break-line)))))) | |
1680 | )) | |
1681 | (defun fortran-break-line () | |
1682 | (let ((opoint (point)) | |
1683 | (bol (save-excursion (beginning-of-line) (point))) | |
1684 | (eol (save-excursion (end-of-line) (point))) | |
1685 | (comment-string nil)) | |
60db3594 | 1686 | |
b8cbdf43 | 1687 | (save-excursion |
23029d77 | 1688 | (if (and comment-start-skip (fortran-find-comment-start-skip)) |
b8cbdf43 RS |
1689 | (progn |
1690 | (re-search-backward comment-start-skip bol t) | |
1691 | (setq comment-string (buffer-substring (point) eol)) | |
1692 | (delete-region (point) eol)))) | |
1eb6bf70 DL |
1693 | ;; Forward line 1 really needs to go to next non white line |
1694 | (if (save-excursion (forward-line) | |
b8cbdf43 RS |
1695 | (or (looking-at " [^ 0\n]") |
1696 | (looking-at "\t[1-9]"))) | |
1697 | (progn | |
b8313955 RS |
1698 | (end-of-line) |
1699 | (delete-region (point) (match-end 0)) | |
b8cbdf43 | 1700 | (delete-horizontal-space) |
4254fe58 | 1701 | (fortran-fill)) |
b8cbdf43 RS |
1702 | (fortran-split-line)) |
1703 | (if comment-string | |
1704 | (save-excursion | |
1705 | (goto-char bol) | |
1706 | (end-of-line) | |
1707 | (delete-horizontal-space) | |
1708 | (indent-to (fortran-comment-hook)) | |
1709 | (insert comment-string))))) | |
1710 | ||
23029d77 | 1711 | (defun fortran-analyze-file-format () |
7977773d | 1712 | "Return nil if fixed format is used, t if TAB formatting is used. |
23029d77 JB |
1713 | Use `fortran-tab-mode-default' if no non-comment statements are found in the |
1714 | file before the end or the first `fortran-analyze-depth' lines." | |
1715 | (let ((i 0)) | |
1716 | (save-excursion | |
1717 | (goto-char (point-min)) | |
1718 | (setq i 0) | |
1719 | (while (not (or | |
1720 | (eobp) | |
1721 | (looking-at "\t") | |
1722 | (looking-at " ") | |
1723 | (> i fortran-analyze-depth))) | |
1724 | (forward-line) | |
1725 | (setq i (1+ i))) | |
1726 | (cond | |
1727 | ((looking-at "\t") t) | |
1728 | ((looking-at " ") nil) | |
1729 | (fortran-tab-mode-default t) | |
1730 | (t nil))))) | |
1731 | ||
1732 | (or (assq 'fortran-tab-mode-string minor-mode-alist) | |
1733 | (setq minor-mode-alist (cons | |
1734 | '(fortran-tab-mode-string | |
1735 | (indent-tabs-mode fortran-tab-mode-string)) | |
1736 | minor-mode-alist))) | |
1737 | ||
1eb6bf70 DL |
1738 | (defun fortran-fill-paragraph (&optional justify) |
1739 | "Fill surrounding comment block as paragraphs, else fill statement. | |
1740 | ||
1741 | Intended as the value of `fill-paragraph-function'." | |
1742 | (interactive "P") | |
1743 | (save-excursion | |
1744 | (beginning-of-line) | |
1745 | (if (not (looking-at "[Cc*]")) | |
1746 | (fortran-fill-statement) | |
1747 | ;; We're in a comment block. Find the start and end of a | |
1748 | ;; paragraph, delimited either by non-comment lines or empty | |
1749 | ;; comments. (Get positions as markers, since the | |
1750 | ;; `indent-region' below can shift the block's end). | |
1751 | (let* ((non-empty-comment (concat "\\(" comment-line-start-skip | |
1752 | "\\)" "[^ \t\n]")) | |
1753 | (start (save-excursion | |
1754 | ;; Find (start of) first line. | |
1755 | (while (and (zerop (forward-line -1)) | |
1756 | (looking-at non-empty-comment))) | |
1757 | (or (looking-at non-empty-comment) | |
1758 | (forward-line)) ; overshot | |
1759 | (point-marker))) | |
1760 | (end (save-excursion | |
1761 | ;; Find start of first line past region to fill. | |
1762 | (while (progn (forward-line) | |
1763 | (looking-at non-empty-comment))) | |
1764 | (point-marker)))) | |
1765 | ;; Indent the block, find the string comprising the effective | |
1766 | ;; comment start skip and use that as a fill-prefix for | |
1767 | ;; filling the region. | |
1768 | (indent-region start end nil) | |
1769 | (let ((paragraph-ignore-fill-prefix nil) | |
1770 | (fill-prefix (progn (beginning-of-line) | |
1771 | (looking-at comment-line-start-skip) | |
1772 | (match-string 0)))) | |
1773 | (let (fill-paragraph-function) | |
1774 | (fill-region start end justify))) ; with normal `fill-paragraph' | |
1775 | (set-marker start nil) | |
2d060beb DL |
1776 | (set-marker end nil)))) |
1777 | t) | |
1eb6bf70 DL |
1778 | |
1779 | (defun fortran-fill-statement () | |
1780 | "Fill a fortran statement up to `fill-column'." | |
1781 | (interactive) | |
1782 | (if (not (save-excursion | |
1783 | (beginning-of-line) | |
1784 | (or (looking-at "[ \t]*$") | |
1785 | (looking-at comment-line-start-skip) | |
1786 | (and comment-start-skip | |
1787 | (looking-at (concat "[ \t]*" comment-start-skip)))))) | |
1788 | (save-excursion | |
1789 | ;; Find beginning of statement. | |
1790 | (fortran-next-statement) | |
1791 | (fortran-previous-statement) | |
1792 | ;; Re-indent initially. | |
1793 | (fortran-indent-line) | |
1794 | ;; Replace newline plus continuation field plus indentation with | |
1795 | ;; single space. | |
1796 | (while (progn | |
1797 | (forward-line) | |
1798 | (fortran-remove-continuation))) | |
1799 | (fortran-previous-statement))) | |
2d060beb | 1800 | (fortran-indent-line)) |
1eb6bf70 | 1801 | |
49116ac0 JB |
1802 | (provide 'fortran) |
1803 | ||
1a06eabd | 1804 | ;;; fortran.el ends here |