HCoop / bpt / emacs.git / blame
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|---|---|---|
| e5167999 ER |
1 | ;;; fortran.el --- Fortran mode for GNU Emacs |
| 2 | ||
| 8cb8832f | 3 | ;; Copyright (C) 1986, 1993, 1994, 1995, 1997, 1998, 1999, 2000, 2001, |
| 5df4f04c | 4 | ;; 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 |
| 4a948dbf | 5 | ;; Free Software Foundation, Inc. |
| 9750e079 | 6 | |
| e5167999 | 7 | ;; Author: Michael D. Prange <prange@erl.mit.edu> |
| aff88519 | 8 | ;; Maintainer: Glenn Morris <rgm@gnu.org> |
| 5b04210c | 9 | ;; Keywords: fortran, languages |
| 1a06eabd | 10 | |
| e5167999 ER |
11 | ;; This file is part of GNU Emacs. |
| 12 | ||
| b1fc2b50 | 13 | ;; GNU Emacs is free software: you can redistribute it and/or modify |
| e5167999 | 14 | ;; it under the terms of the GNU General Public License as published by |
| b1fc2b50 GM |
15 | ;; the Free Software Foundation, either version 3 of the License, or |
| 16 | ;; (at your option) any later version. | |
| e5167999 ER |
17 | |
| 18 | ;; GNU Emacs is distributed in the hope that it will be useful, | |
| 19 | ;; but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 20 | ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 21 | ;; GNU General Public License for more details. | |
| 22 | ||
| 23 | ;; You should have received a copy of the GNU General Public License | |
| b1fc2b50 | 24 | ;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. |
| 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 | |
| 45cf60ae | 31 | ;; form. For editing Fortran 90 free format source, use `f90-mode' |
| b2523604 DL |
32 | ;; (f90.el). It is meant to support the GNU Fortran language |
| 33 | ;; implemented by g77 (its extensions to Fortran77 and | |
| 34 | ;; interpretations, e.g. of blackslash in strings). | |
| 7977773d DL |
35 | |
| 36 | ;;; History: | |
| 37 | ||
| 38 | ;; Fortran mode was upgraded by Stephen A. Wood (saw@cebaf.gov). | |
| 23029d77 JB |
39 | |
| 40 | ;; We acknowledge many contributions and valuable suggestions by | |
| b8cbdf43 | 41 | ;; Lawrence R. Dodd, Ralf Fassel, Ralph Finch, Stephen Gildea, |
| 60db3594 | 42 | ;; Dr. Anil Gokhale, Ulrich Mueller, Mark Neale, Eric Prestemon, |
| b8cbdf43 RS |
43 | ;; Gary Sabot and Richard Stallman. |
| 44 | ||
| e5167999 ER |
45 | ;;; Code: |
| 46 | ||
| 45cf60ae | 47 | ;; Todo: |
| 1eb6bf70 | 48 | |
| 315aa1de | 49 | ;; * Tidy it all up (more)! |
| 1eb6bf70 DL |
50 | ;; * Implement insertion and removal of statement continuations in |
| 51 | ;; mixed f77/f90 style, with the first `&' past column 72 and the | |
| 52 | ;; second in column 6. | |
| b2523604 | 53 | ;; * Support any other extensions to f77 grokked by GNU Fortran I've missed. |
| 1eb6bf70 | 54 | |
| 5d724235 SM |
55 | ;; silence compiler |
| 56 | (defvar dabbrev-case-fold-search) | |
| 5d724235 SM |
57 | (defvar gud-find-expr-function) |
| 58 | (defvar imenu-case-fold-search) | |
| 59 | (defvar imenu-syntax-alist) | |
| e83d1fe8 DN |
60 | (defvar comment-region-function) |
| 61 | (defvar uncomment-region-function) | |
| 5b04210c | 62 | |
| fcad5199 | 63 | (defgroup fortran nil |
| 5b04210c | 64 | "Major mode for editing fixed format Fortran code." |
| 8ec3bce0 JL |
65 | :link '(custom-group-link :tag "Font Lock Faces group" font-lock-faces) |
| 66 | :link '(custom-manual "(emacs)Fortran") | |
| fcad5199 RS |
67 | :group 'languages) |
| 68 | ||
| 69 | (defgroup fortran-indent nil | |
| 5b04210c | 70 | "Indentation variables in Fortran mode." |
| fcad5199 | 71 | :prefix "fortran-" |
| 5b04210c | 72 | :group 'fortran) |
| fcad5199 RS |
73 | |
| 74 | (defgroup fortran-comment nil | |
| 5b04210c | 75 | "Comment-handling variables in Fortran mode." |
| fcad5199 | 76 | :prefix "fortran-" |
| 5b04210c | 77 | :group 'fortran) |
| fcad5199 RS |
78 | |
| 79 | ||
| fcad5199 | 80 | (defcustom fortran-tab-mode-default nil |
| 694cf05e | 81 | "Default tabbing/carriage control style for empty files in Fortran mode. |
| 5b04210c | 82 | A non-nil value specifies tab-digit style of continuation control. |
| e80f2147 | 83 | A value of nil specifies that continuation lines are marked |
| fcad5199 | 84 | with a character in column 6." |
| 5b04210c | 85 | :type 'boolean |
| 2fa20711 | 86 | :safe 'booleanp |
| fcad5199 | 87 | :group 'fortran-indent) |
| e80f2147 | 88 | |
| 694cf05e GM |
89 | ;; TODO add more detail of what tab mode is to doc string. |
| 90 | (defcustom fortran-tab-mode-string | |
| 91 | (propertize "/t" 'help-echo "This buffer is in Fortran TAB mode" | |
| 92 | 'mouse-face 'mode-line-highlight | |
| 93 | 'local-map | |
| 94 | (make-mode-line-mouse-map 'mouse-1 | |
| 95 | (lambda () | |
| 96 | (interactive) | |
| 97 | (describe-variable | |
| 98 | 'fortran-tab-mode-string)))) | |
| cd9b5d3e GM |
99 | "String to appear in mode line in TAB format buffers. |
| 100 | See Info node `(emacs)ForIndent Cont'." | |
| 5b04210c | 101 | :type 'string |
| 2fa20711 | 102 | :risky t |
| fcad5199 | 103 | :group 'fortran-indent) |
| 694cf05e | 104 | |
| fcad5199 | 105 | (defcustom fortran-do-indent 3 |
| 694cf05e | 106 | "Extra indentation applied to DO blocks." |
| 5b04210c | 107 | :type 'integer |
| 2fa20711 | 108 | :safe 'integerp |
| fcad5199 RS |
109 | :group 'fortran-indent) |
| 110 | ||
| 111 | (defcustom fortran-if-indent 3 | |
| 694cf05e | 112 | "Extra indentation applied to IF, SELECT CASE and WHERE blocks." |
| 5b04210c | 113 | :type 'integer |
| 2fa20711 | 114 | :safe 'integerp |
| fcad5199 RS |
115 | :group 'fortran-indent) |
| 116 | ||
| 117 | (defcustom fortran-structure-indent 3 | |
| 694cf05e | 118 | "Extra indentation applied to STRUCTURE, UNION, MAP and INTERFACE blocks." |
| 5b04210c | 119 | :type 'integer |
| 2fa20711 | 120 | :safe 'integerp |
| fcad5199 RS |
121 | :group 'fortran-indent) |
| 122 | ||
| 123 | (defcustom fortran-continuation-indent 5 | |
| 694cf05e | 124 | "Extra indentation applied to continuation lines." |
| 5b04210c | 125 | :type 'integer |
| 2fa20711 | 126 | :safe 'integerp |
| fcad5199 RS |
127 | :group 'fortran-indent) |
| 128 | ||
| 129 | (defcustom fortran-comment-indent-style 'fixed | |
| 694cf05e | 130 | "How to indent comments. |
| 5b04210c GM |
131 | nil forces comment lines not to be touched; |
| 132 | `fixed' indents to `fortran-comment-line-extra-indent' columns beyond | |
| 133 | `fortran-minimum-statement-indent-fixed' (if `indent-tabs-mode' nil), or | |
| 134 | `fortran-minimum-statement-indent-tab' (if `indent-tabs-mode' non-nil); | |
| ff451e17 SM |
135 | `relative' indents to current Fortran indentation plus |
| 136 | `fortran-comment-line-extra-indent'." | |
| 5b04210c | 137 | :type '(radio (const :tag "Untouched" nil) (const fixed) (const relative)) |
| 2fa20711 | 138 | :safe (lambda (value) (memq value '(nil fixed relative))) |
| fcad5199 RS |
139 | :group 'fortran-indent) |
| 140 | ||
| 141 | (defcustom fortran-comment-line-extra-indent 0 | |
| 694cf05e | 142 | "Amount of extra indentation for text within full-line comments." |
| 5b04210c | 143 | :type 'integer |
| 2fa20711 | 144 | :safe 'integerp |
| fcad5199 RS |
145 | :group 'fortran-indent |
| 146 | :group 'fortran-comment) | |
| 147 | ||
| 68ca306c | 148 | (defcustom fortran-comment-line-start "C" |
| 694cf05e | 149 | "Delimiter inserted to start new full-line comment. |
| cd9b5d3e GM |
150 | You might want to change this to \"*\", for instance; or \"!\" to |
| 151 | allow trailing comments on a line." | |
| 7dae727d | 152 | :version "21.1" |
| 5b04210c | 153 | :type 'string |
| 2fa20711 | 154 | :safe 'stringp |
| 5b04210c | 155 | :group 'fortran-comment) |
| fcad5199 | 156 | |
| 68ca306c DL |
157 | ;; This used to match preprocessor lines too, but that messes up |
| 158 | ;; filling and doesn't seem to be necessary. | |
| 159 | (defcustom fortran-comment-line-start-skip | |
| 8b31236d | 160 | "^[CcDd*!]\\(\\([^ \t\n]\\)\\2+\\)?[ \t]*" |
| a227f163 | 161 | "Regexp to match the start of a full-line comment." |
| 7dae727d | 162 | :version "21.1" |
| 5b04210c | 163 | :type 'regexp |
| 2fa20711 | 164 | :safe 'stringp |
| 5b04210c | 165 | :group 'fortran-comment) |
| fcad5199 | 166 | |
| 5a73972b | 167 | (defcustom fortran-directive-re |
| 8edfcc7d | 168 | "^[ \t]*#.*" |
| 694cf05e | 169 | "Regexp to match a directive line. |
| 5a73972b GM |
170 | The matching text will be fontified with `font-lock-keyword-face'. |
| 171 | The matching line will be given zero indentation." | |
| bf247b6e | 172 | :version "22.1" |
| 5b04210c | 173 | :type 'regexp |
| 2fa20711 | 174 | :safe 'stringp |
| 5b04210c | 175 | :group 'fortran-indent) |
| 8edfcc7d | 176 | |
| fcad5199 | 177 | (defcustom fortran-minimum-statement-indent-fixed 6 |
| 694cf05e | 178 | "Minimum statement indentation for fixed format continuation style." |
| 5b04210c | 179 | :type 'integer |
| 2fa20711 | 180 | :safe 'integerp |
| fcad5199 RS |
181 | :group 'fortran-indent) |
| 182 | ||
| 183 | (defcustom fortran-minimum-statement-indent-tab (max tab-width 6) | |
| 694cf05e | 184 | "Minimum statement indentation for TAB format continuation style." |
| 5b04210c | 185 | :type 'integer |
| 2fa20711 | 186 | :safe 'integerp |
| fcad5199 | 187 | :group 'fortran-indent) |
| 3dd63760 JB |
188 | |
| 189 | ;; Note that this is documented in the v18 manuals as being a string | |
| 190 | ;; of length one rather than a single character. | |
| 191 | ;; The code in this file accepts either format for compatibility. | |
| fcad5199 | 192 | (defcustom fortran-comment-indent-char " " |
| 694cf05e | 193 | "Single-character string inserted for Fortran comment indentation. |
| fcad5199 | 194 | Normally a space." |
| 5b04210c | 195 | :type 'string |
| 2fa20711 GM |
196 | :safe (lambda (value) (or (characterp value) |
| 197 | (and (stringp value) (= (length value) 1)))) | |
| fcad5199 | 198 | :group 'fortran-comment) |
| 3dd63760 | 199 | |
| fcad5199 | 200 | (defcustom fortran-line-number-indent 1 |
| 694cf05e | 201 | "Maximum indentation for Fortran line numbers. |
| fcad5199 | 202 | 5 means right-justify them within their five-column field." |
| 5b04210c | 203 | :type 'integer |
| 2fa20711 | 204 | :safe 'integerp |
| fcad5199 | 205 | :group 'fortran-indent) |
| 3dd63760 | 206 | |
| fcad5199 | 207 | (defcustom fortran-check-all-num-for-matching-do nil |
| 694cf05e | 208 | "Non-nil causes all numbered lines to be treated as possible DO loop ends." |
| 5b04210c | 209 | :type 'boolean |
| 2fa20711 | 210 | :safe 'booleanp |
| fcad5199 | 211 | :group 'fortran) |
| 3dd63760 | 212 | |
| fcad5199 | 213 | (defcustom fortran-blink-matching-if nil |
| 694cf05e | 214 | "Non-nil causes \\[fortran-indent-line] on ENDIF to blink on matching IF. |
| fcad5199 | 215 | Also, from an ENDDO statement blink on matching DO [WHILE] statement." |
| 5b04210c | 216 | :type 'boolean |
| 2fa20711 | 217 | :safe 'booleanp |
| fcad5199 | 218 | :group 'fortran) |
| 3dd63760 | 219 | |
| fcad5199 | 220 | (defcustom fortran-continuation-string "$" |
| 694cf05e | 221 | "Single-character string used for Fortran continuation lines. |
| 3dd63760 JB |
222 | In fixed format continuation style, this character is inserted in |
| 223 | column 6 by \\[fortran-split-line] to begin a continuation line. | |
| 5b04210c GM |
224 | Also, if \\[fortran-indent-line] finds this at the beginning of a |
| 225 | line, it will convert the line into a continuation line of the | |
| cd9b5d3e | 226 | appropriate style. Normally \"$\"." |
| 5b04210c | 227 | :type 'string |
| 2fa20711 | 228 | :safe (lambda (value) (and (stringp value) (= (length value) 1))) |
| fcad5199 | 229 | :group 'fortran) |
| 3dd63760 | 230 | |
| fcad5199 | 231 | (defcustom fortran-comment-region "c$$$" |
| 694cf05e | 232 | "String inserted by \\[fortran-comment-region] at start of each \ |
| 1eb6bf70 | 233 | line in region." |
| 5b04210c | 234 | :type 'string |
| 2fa20711 | 235 | :safe 'stringp |
| fcad5199 | 236 | :group 'fortran-comment) |
| 3dd63760 | 237 | |
| fcad5199 | 238 | (defcustom fortran-electric-line-number t |
| 694cf05e | 239 | "Non-nil causes line numbers to be moved to the correct column as typed." |
| 5b04210c | 240 | :type 'boolean |
| 2fa20711 | 241 | :safe 'booleanp |
| fcad5199 | 242 | :group 'fortran) |
| 3dd63760 | 243 | |
| 694cf05e | 244 | ;; TODO use fortran-line-length, somehow. |
| 5b04210c | 245 | (defcustom fortran-column-ruler-fixed |
| 23029d77 | 246 | "0 4 6 10 20 30 40 5\ |
| 7977773d | 247 | 0 60 70\n\ |
| f022dd89 SM |
248 | \[ ]|{ | | | | | | | | \ |
| 249 | \| | | | |}\n" | |
| dc6579ac | 250 | "String displayed above current line by \\[fortran-column-ruler]. |
| 5b04210c GM |
251 | This variable is used in fixed format mode. |
| 252 | See the variable `fortran-column-ruler-tab' for TAB format mode." | |
| 253 | :type 'string | |
| 2fa20711 | 254 | :safe 'stringp |
| 5b04210c | 255 | :group 'fortran) |
| 23029d77 | 256 | |
| 694cf05e | 257 | ;; TODO use fortran-line-length, somehow. |
| 5b04210c | 258 | (defcustom fortran-column-ruler-tab |
| 23029d77 | 259 | "0 810 20 30 40 5\ |
| 7977773d | 260 | 0 60 70\n\ |
| f022dd89 SM |
261 | \[ ]| { | | | | | | | | \ |
| 262 | \| | | | |}\n" | |
| dc6579ac | 263 | "String displayed above current line by \\[fortran-column-ruler]. |
| 5b04210c GM |
264 | This variable is used in TAB format mode. |
| 265 | See the variable `fortran-column-ruler-fixed' for fixed format mode." | |
| 266 | :type 'string | |
| 2fa20711 | 267 | :safe 'stringp |
| 5b04210c | 268 | :group 'fortran) |
| 3dd63760 | 269 | |
| 5b04210c GM |
270 | (defcustom fortran-analyze-depth 100 |
| 271 | "Number of lines to scan to identify fixed or TAB format style." | |
| 272 | :type 'integer | |
| 2fa20711 | 273 | :safe 'integerp |
| 5b04210c | 274 | :group 'fortran) |
| 3dd63760 | 275 | |
| fcad5199 | 276 | (defcustom fortran-break-before-delimiters t |
| 694cf05e | 277 | "Non-nil causes filling to break lines before delimiters. |
| 337c50a5 | 278 | Delimiters are characters matching the regexp `fortran-break-delimiters-re'." |
| 5b04210c | 279 | :type 'boolean |
| 2fa20711 | 280 | :safe 'booleanp |
| fcad5199 | 281 | :group 'fortran) |
| b8cbdf43 | 282 | |
| 694cf05e GM |
283 | ;; TODO 0 as no-limit, as per g77. |
| 284 | (defcustom fortran-line-length 72 | |
| 285 | "Maximum number of characters in a line of fixed-form Fortran code. | |
| 286 | Characters beyond this point are treated as comments. Setting | |
| 287 | this variable directly (after fortran mode is loaded) does not | |
| 288 | take effect. Use either \\[customize] (which affects all Fortran | |
| 289 | buffers and the default) or the function | |
| 290 | `fortran-line-length' (which can also operate on just the current | |
| 291 | buffer). This corresponds to the g77 compiler option | |
| 292 | `-ffixed-line-length-N'." | |
| 293 | :type 'integer | |
| 2fa20711 | 294 | :safe 'integerp |
| 694cf05e GM |
295 | :initialize 'custom-initialize-default |
| 296 | :set (lambda (symbol value) | |
| 297 | ;; Do all fortran buffers, and the default. | |
| 298 | (fortran-line-length value t)) | |
| 299 | :version "23.1" | |
| 300 | :group 'fortran) | |
| 301 | ||
| 694cf05e GM |
302 | (make-variable-buffer-local 'fortran-line-length) |
| 303 | ||
| 304 | (defcustom fortran-mode-hook nil | |
| 305 | "Hook run when entering Fortran mode." | |
| 306 | :type 'hook | |
| 307 | :group 'fortran) | |
| 308 | ||
| 309 | \f | |
| 337c50a5 GM |
310 | (defconst fortran-break-delimiters-re "[-+*/><=, \t]" |
| 311 | "Regexp matching delimiter characters at which lines may be broken. | |
| 312 | There are certain tokens comprised entirely of characters | |
| 313 | matching this regexp that should not be split, and these are | |
| 314 | specified by the constant `fortran-no-break-re'.") | |
| 315 | ||
| 316 | ;; The ">=", etc F77 extensions are supported by g77. | |
| 317 | (defconst fortran-no-break-re | |
| 318 | (regexp-opt '("**" "//" "=>" ">=" "<=" "==" "/=") 'paren) | |
| 319 | "Regexp specifying where not to break lines when filling. | |
| 320 | This regexp matches certain tokens comprised entirely of | |
| 321 | characters matching the regexp `fortran-break-delimiters-re' that should | |
| 322 | not be split by filling. Each element is assumed to be two | |
| 323 | characters long.") | |
| 324 | ||
| 694cf05e | 325 | (defconst fortran-if-start-re "\\(\\(\\sw\\|\\s_\\)+:[ \t]*\\)?if[ \t]*(" |
| 5b04210c GM |
326 | "Regexp matching the start of an IF statement.") |
| 327 | ||
| 4a948dbf GM |
328 | ;; Note fortran-current-defun uses the subgroups. |
| 329 | (defconst fortran-start-prog-re | |
| 330 | "^[ \t]*\\(program\\|subroutine\\|function\ | |
| 331 | \\|[ \ta-z0-9*()]*[ \t]+function\\|\ | |
| 332 | \\(block[ \t]*data\\)\\)" | |
| 333 | "Regexp matching the start of a subprogram, from the line start.") | |
| 334 | ||
| 694cf05e | 335 | (defconst fortran-end-prog-re1 |
| 5b04210c GM |
336 | "end\ |
| 337 | \\([ \t]*\\(program\\|subroutine\\|function\\|block[ \t]*data\\)\\>\ | |
| 338 | \\([ \t]*\\(\\sw\\|\\s_\\)+\\)?\\)?" | |
| 339 | "Regexp possibly matching the end of a subprogram.") | |
| 563f09b5 | 340 | |
| 694cf05e | 341 | (defconst fortran-end-prog-re |
| 5b04210c GM |
342 | (concat "^[ \t0-9]*" fortran-end-prog-re1) |
| 343 | "Regexp possibly matching the end of a subprogram, from the line start. | |
| 344 | See also `fortran-end-prog-re1'.") | |
| 345 | ||
| 346 | (defconst fortran-type-types | |
| 347 | (concat "\\<" | |
| 348 | (mapconcat 'identity ; " " -> "[ \t]*" | |
| 349 | (split-string | |
| 350 | (regexp-opt | |
| 351 | (let ((simple-types | |
| 352 | '("character" "byte" "integer" "logical" | |
| 353 | "none" "real" "complex" | |
| 354 | "double precision" "double complex")) | |
| 355 | (structured-types '("structure" "union" "map")) | |
| 356 | (other-types '("record" "dimension" | |
| 357 | "parameter" "common" "save" | |
| 358 | "external" "intrinsic" "data" | |
| 359 | "equivalence"))) | |
| 360 | (append | |
| 361 | (mapcar (lambda (x) (concat "implicit " x)) | |
| 362 | simple-types) | |
| 363 | simple-types | |
| 364 | (mapcar (lambda (x) (concat "end " x)) | |
| 365 | structured-types) | |
| 366 | structured-types | |
| 367 | other-types)) 'paren)) | |
| 368 | "[ \t]*") "\\>") | |
| 369 | "Regexp matching Fortran types.") | |
| 370 | ||
| 371 | (defvar fortran-font-lock-keywords-1 | |
| 372 | ;; Program, subroutine and function declarations, plus calls. | |
| 373 | '(("\\<\\(block[ \t]*data\\|call\\|entry\\|function\\|\ | |
| 374 | program\\|subroutine\\)\\>[ \t]*\\(\\sw+\\)?" | |
| 375 | (1 font-lock-keyword-face) | |
| 376 | (2 font-lock-function-name-face nil t))) | |
| f3d4eb7b | 377 | "Subdued level highlighting for Fortran mode.") |
| 563f09b5 | 378 | |
| 5b04210c GM |
379 | (defvar fortran-font-lock-keywords-2 |
| 380 | (append fortran-font-lock-keywords-1 | |
| 381 | (list | |
| 382 | ;; Fontify all type specifiers (must be first - see below). | |
| 383 | (cons fortran-type-types 'font-lock-type-face) | |
| 384 | ;; Builtin keywords (except logical, do and goto - see below). | |
| 385 | (concat "\\<" (regexp-opt | |
| 386 | '("continue" "format" "end" "enddo" | |
| 387 | "if" "then" "else" "endif" "elseif" | |
| 388 | "while" "inquire" "stop" "return" | |
| 389 | "include" "open" "close" "read" | |
| 390 | "write" "format" "print" "select" "case" | |
| 8cb8832f GM |
391 | "cycle" "exit" "rewind" "backspace" |
| 392 | "where" "elsewhere") | |
| 5b04210c GM |
393 | 'paren) "\\>") |
| 394 | ;; Builtin operators. | |
| 395 | (concat "\\." (regexp-opt | |
| ac342f28 GM |
396 | '("and" "eq" "eqv" "false" "ge" "gt" "le" "lt" "ne" |
| 397 | "neqv" "not" "or" "true") | |
| 5b04210c GM |
398 | 'paren) "\\.") |
| 399 | ;; do/goto keywords and targets, and goto tags. | |
| 400 | '("\\<\\(do\\|go *to\\)\\>[ \t]*\\([0-9]+\\)?" | |
| 401 | (1 font-lock-keyword-face) | |
| 402 | (2 font-lock-constant-face nil t)) | |
| 403 | '("^ *\\([0-9]+\\)" . font-lock-constant-face))) | |
| f408b027 SM |
404 | "Medium level highlighting for Fortran mode.") |
| 405 | ||
| 0a23b2c3 | 406 | ;; See bug#1385. Never really looked into _why_ this matters... |
| 119850e9 GM |
407 | (defun fortran-match-and-skip-declaration (limit) |
| 408 | "Like `font-lock-match-c-style-declaration-item-and-skip-to-next'. | |
| 409 | The only difference is, it returns t in a case when the default returns nil." | |
| 410 | (when (looking-at "[ \n\t*]*\\(\\sw+\\)[ \t\n]*\\(((?\\)?") | |
| 411 | (when (and (match-end 2) (> (- (match-end 2) (match-beginning 2)) 1)) | |
| 412 | (let ((pos (point))) | |
| 413 | (skip-chars-backward " \t\n") | |
| 414 | (skip-syntax-backward "w") | |
| 415 | (unless (looking-at "\\(\\sw+\\)[ \t\n]*\\sw+[ \t\n]*\\(((?\\)?") | |
| 416 | (goto-char pos) | |
| 417 | (looking-at "[ \n\t*]*\\(\\sw+\\)[ \t\n]*\\(((?\\)?")))) | |
| 418 | (save-match-data | |
| 419 | (condition-case nil | |
| 420 | (save-restriction | |
| 421 | (narrow-to-region (point-min) limit) | |
| 422 | (goto-char (match-end 1)) | |
| 423 | (while (not (looking-at "[ \t\n]*\\(\\(,\\)\\|;\\|\\'\\)")) | |
| 424 | (goto-char (or (scan-sexps (point) 1) (point-max)))) | |
| 425 | (goto-char (match-end 2))) | |
| 426 | (error t))))) | |
| 427 | ||
| 5b04210c GM |
428 | (defvar fortran-font-lock-keywords-3 |
| 429 | (append | |
| 430 | fortran-font-lock-keywords-1 | |
| 431 | ;; All type specifiers plus their declared items. | |
| 432 | (list | |
| 433 | (list (concat fortran-type-types "[ \t(/]*\\(*\\)?") | |
| 434 | ;; Type specifier. | |
| 435 | '(1 font-lock-type-face) | |
| 436 | ;; Declaration item (or just /.../ block name). | |
| 119850e9 | 437 | `(fortran-match-and-skip-declaration |
| 5b04210c GM |
438 | ;; Start after any *(...) expression. |
| 439 | (condition-case nil | |
| 440 | (and (match-beginning ,(1+ (regexp-opt-depth | |
| 441 | fortran-type-types))) | |
| 442 | (forward-sexp) | |
| 443 | (forward-sexp)) | |
| 444 | (error nil)) | |
| 445 | ;; No need to clean up. | |
| 446 | nil | |
| 447 | ;; Fontify as a variable name, functions fontified elsewhere. | |
| 448 | (1 font-lock-variable-name-face nil t)))) | |
| 449 | ;; Things extra to `fortran-font-lock-keywords-3' (must be done first). | |
| 450 | (list | |
| 451 | ;; Goto-like `err=label'/`end=label' in read/write statements. | |
| 452 | '(", *\\(e\\(nd\\|rr\\)\\)\\> *\\(= *\\([0-9]+\\)\\)?" | |
| 453 | (1 font-lock-keyword-face) (4 font-lock-constant-face nil t)) | |
| 454 | ;; Standard continuation character and in a TAB-formatted line. | |
| 455 | '("^ \\{5\\}\\([^ 0\n]\\)" 1 font-lock-string-face) | |
| 456 | '("^\t\\([1-9]\\)" 1 font-lock-string-face)) | |
| 457 | `((,fortran-directive-re (0 font-lock-keyword-face t))) | |
| 458 | ;; `fortran-font-lock-keywords-2' without types (see above). | |
| 459 | (cdr (nthcdr (length fortran-font-lock-keywords-1) | |
| 460 | fortran-font-lock-keywords-2))) | |
| f408b027 SM |
461 | "Gaudy level highlighting for Fortran mode.") |
| 462 | ||
| 8cb8832f GM |
463 | (defvar fortran-font-lock-keywords-4 |
| 464 | (append fortran-font-lock-keywords-3 | |
| 465 | (list (list | |
| 466 | (concat "\\<" | |
| 467 | (regexp-opt | |
| 468 | '("int" "ifix" "idint" "real" "float" "sngl" | |
| 469 | "dble" "cmplx" "ichar" "char" "aint" "dint" | |
| 470 | "anint" "dnint" "nint" "idnint" "iabs" "abs" | |
| 471 | "dabs" "cabs" "mod" "amod" "dmod" "isign" | |
| 472 | "sign" "dsign" "idim" "dim" "ddim" "dprod" | |
| 473 | "max" "max0" "amax1" "dmax1" "amax0" "max1" | |
| 742695df GM |
474 | "min" "min0" "amin1" "dmin1" "amin0" "min1" |
| 475 | "len" "index" "lge" "lgt" "lle" "llt" "aimag" | |
| 8cb8832f GM |
476 | "conjg" "sqrt" "dsqrt" "csqrt" "exp" "dexp" |
| 477 | "cexp" "log" "alog" "dlog" "clog" "log10" | |
| 478 | "alog10" "dlog10" "sin" "dsin" "csin" "cos" | |
| 479 | "dcos" "ccos" "tan" "dtan" "asin" "dasin" | |
| 480 | "acos" "dacos" "atan" "datan" "atan2" "datan2" | |
| 481 | "sinh" "dsinh" "cosh" "dcosh" "tanh" "dtanh") | |
| 482 | 'paren) "[ \t]*(") '(1 font-lock-builtin-face)))) | |
| 483 | "Maximum highlighting for Fortran mode. | |
| 484 | Consists of level 3 plus all other intrinsics not already highlighted.") | |
| 485 | ||
| 5b04210c GM |
486 | ;; Comments are real pain in Fortran because there is no way to |
| 487 | ;; represent the standard comment syntax in an Emacs syntax table. | |
| 488 | ;; (We can do so for F90-style). Therefore an unmatched quote in a | |
| 489 | ;; standard comment will throw fontification off on the wrong track. | |
| 490 | ;; So we do syntactic fontification with regexps. | |
| b879a6e2 SM |
491 | (defun fortran-make-syntax-propertize-function (line-length) |
| 492 | "Return a value for `syntax-propertize-function' in Fortran mode. | |
| 493 | This varies according to the value of LINE-LENGTH. | |
| 694cf05e | 494 | This is used to fontify fixed-format Fortran comments." |
| b879a6e2 SM |
495 | ;; This results in a non-byte-compiled function. We could pass it through |
| 496 | ;; `byte-compile', but simple benchmarks indicate that it's probably not | |
| 497 | ;; worth the trouble (about ½% of slow down). | |
| 498 | (eval ;I hate `eval', but it's hard to avoid it here. | |
| 499 | `(syntax-propertize-rules | |
| 500 | ("^[cd\\*]" (0 "<")) | |
| 501 | ;; We mark all chars after line-length as "comment-start", rather than | |
| 502 | ;; just the first one. This is so that a closing ' that's past the | |
| 503 | ;; line-length will indeed be ignored (and will result in a string that | |
| 504 | ;; leaks into subsequent lines). | |
| 505 | ((format "^[^cd\\*\t\n].\\{%d\\}\\(.+\\)" (1- line-length)) | |
| 506 | (1 "<"))))) | |
| 0f1057e9 | 507 | |
| f3d4eb7b SM |
508 | (defvar fortran-font-lock-keywords fortran-font-lock-keywords-1 |
| 509 | "Default expressions to highlight in Fortran mode.") | |
| 5b04210c | 510 | |
| 9645c179 | 511 | (defvar fortran-imenu-generic-expression |
| 240e9cda DL |
512 | ;; These patterns could be confused by sequence nos. in cols 72+ and |
| 513 | ;; don't allow continuations everywhere. | |
| 7977773d DL |
514 | (list |
| 515 | (list | |
| 516 | nil | |
| a8189dfe DL |
517 | ;; [This will be fooled by `end function' allowed by G77. Also, |
| 518 | ;; it assumes sensible whitespace is employed.] | |
| 519 | (concat | |
| 520 | ;; leading whitespace: | |
| 521 | "^\\s-+\\(" | |
| 522 | ;; function declaration with optional type, e.g. `real', | |
| 523 | ;; `real*4', character(*), `double precision': | |
| 524 | "\\(\\sw\\|\\s-\\|[*()+]\\)*" | |
| 525 | "\\<function\\|subroutine\\|entry\\|block\\s-*data\\|program\\)" | |
| 526 | ;; Possible statement continuation: | |
| 527 | "[ \t" fortran-continuation-string "]+" | |
| 528 | ;; Variable to index: | |
| 529 | "\\(\\sw+\\)") | |
| 7977773d | 530 | 3) |
| 5b04210c GM |
531 | ;; Un-named block data. |
| 532 | '(nil "^\\s-+\\(block\\s-*data\\)\\s-*$" 1)) | |
| 533 | "Value for `imenu-generic-expression' in Fortran mode.") | |
| 534 | ||
| 535 | \f | |
| 8cb8832f GM |
536 | ;; Hideshow support. |
| 537 | (defconst fortran-blocks-re | |
| 538 | (concat "block[ \t]*data\\|select[ \t]*case\\|" | |
| 539 | (regexp-opt '("do" "if" "interface" "function" "map" "program" | |
| 540 | "structure" "subroutine" "union" "where"))) | |
| 541 | "Regexp potentially indicating the start or end of a Fortran \"block\". | |
| 542 | Omits naked END statements, and DO-loops closed by anything other | |
| 543 | than ENDDO.") | |
| 544 | ||
| 545 | (defconst fortran-end-block-re | |
| 546 | ;; Do-loops terminated by things other than ENDDO cannot be handled | |
| 547 | ;; with a regexp. This omission does not seem to matter to hideshow... | |
| 548 | (concat "^[ \t0-9]*\\<end[ \t]*\\(" | |
| 549 | fortran-blocks-re | |
| 550 | ;; Naked END statement. | |
| 551 | "\\|!\\|$\\)") | |
| 552 | "Regexp matching the end of a Fortran \"block\", from the line start. | |
| 553 | Note that only ENDDO is handled for the end of a DO-loop. Used | |
| 554 | in the Fortran entry in `hs-special-modes-alist'.") | |
| 555 | ||
| 556 | (defconst fortran-start-block-re | |
| 557 | (concat | |
| 558 | "^[ \t0-9]*\\(" ; statement number | |
| 559 | ;; Structure label for DO, IF, SELECT, WHERE. | |
| 560 | "\\(\\(\\sw+[ \t]*:[ \t]*\\)?" | |
| 561 | ;; IF blocks are a nuisance: | |
| 562 | ;; IF ( ... ) foo is not a block, but a single statement. | |
| 563 | ;; IF ( ... ) THEN can be split over multiple lines. | |
| 564 | ;; [So can, eg, a DO WHILE (... ), but that is less common, I hope.] | |
| 565 | ;; The regexp below allows for it to be split over at most 2 lines. | |
| 566 | ;; That leads to the problem of not matching two consecutive IF | |
| 567 | ;; statements as one, eg: | |
| 568 | ;; IF ( ... ) foo | |
| 569 | ;; IF ( ... ) THEN | |
| 570 | ;; It simply is not possible to do this in a 100% correct fashion | |
| 571 | ;; using a regexp - see the functions fortran-end-if, | |
| 572 | ;; fortran-beginning-if for the hoops we have to go through. | |
| 573 | ;; An alternative is to match on THEN at a line end, eg: | |
| 574 | ;; ".*)[ \t]*then[ \t]*\\($\\|!\\)" | |
| 575 | ;; This would also match ELSE branches, though. This does not seem | |
| 576 | ;; right to me, because then one has neighbouring blocks that are | |
| 577 | ;; not nested in each other. | |
| 578 | "\\(if[ \t]*(\\(.*\\|" | |
| 579 | ".*\n\\([^if]*\\([^i].\\|.[^f]\\|.\\>\\)\\)\\)\\<then\\|" | |
| 580 | "do\\|select[ \t]*case\\|where\\)\\)\\|" | |
| 581 | (regexp-opt '("interface" "function" "map" "program" | |
| 582 | "structure" "subroutine" "union")) | |
| 583 | "\\|block[ \t]*data\\)[ \t]*") | |
| 584 | "Regexp matching the start of a Fortran \"block\", from the line start. | |
| 585 | A simple regexp cannot do this in fully correct fashion, so this | |
| 586 | tries to strike a compromise between complexity and flexibility. | |
| 587 | Used in the Fortran entry in `hs-special-modes-alist'.") | |
| 588 | ||
| 589 | (add-to-list 'hs-special-modes-alist | |
| 9d23c925 | 590 | `(fortran-mode ,fortran-start-block-re ,fortran-end-block-re |
| 8cb8832f GM |
591 | "^[cC*!]" fortran-end-of-block nil)) |
| 592 | ||
| 593 | \f | |
| 5b04210c GM |
594 | (defvar fortran-mode-syntax-table |
| 595 | (let ((table (make-syntax-table))) | |
| 17cb3e0e GM |
596 | ;; Was a word-constituent (for abbrevs), now punctuation (g77 |
| 597 | ;; multi-statement lines). | |
| 598 | (modify-syntax-entry ?\; "." table) | |
| 5b04210c GM |
599 | (modify-syntax-entry ?\r " " table) |
| 600 | (modify-syntax-entry ?+ "." table) | |
| 601 | (modify-syntax-entry ?- "." table) | |
| 602 | (modify-syntax-entry ?= "." table) | |
| 603 | (modify-syntax-entry ?* "." table) | |
| 604 | (modify-syntax-entry ?/ "." table) | |
| 605 | (modify-syntax-entry ?\' "\"" table) | |
| 606 | (modify-syntax-entry ?\" "\"" table) | |
| 8cb8832f GM |
607 | ;; Consistent with GNU Fortran's default -- see the manual. |
| 608 | ;; The F77 standard imposes no rule on this issue. | |
| 5b04210c GM |
609 | (modify-syntax-entry ?\\ "\\" table) |
| 610 | ;; This might be better as punctuation, as for C, but this way you | |
| 611 | ;; can treat floating-point numbers as symbols. | |
| 612 | (modify-syntax-entry ?. "_" table) ; e.g. `a.ne.b' | |
| 613 | (modify-syntax-entry ?_ "_" table) | |
| 614 | (modify-syntax-entry ?$ "_" table) ; esp. VMSisms | |
| 615 | (modify-syntax-entry ?\! "<" table) | |
| 616 | (modify-syntax-entry ?\n ">" table) | |
| 617 | table) | |
| 618 | "Syntax table used in Fortran mode.") | |
| f408b027 | 619 | |
| f6bf87c5 NR |
620 | (defvar fortran-gud-syntax-table |
| 621 | (let ((st (make-syntax-table fortran-mode-syntax-table))) | |
| 622 | (modify-syntax-entry ?\n "." st) | |
| 623 | st) | |
| 624 | "Syntax table used to parse Fortran expressions for printing in GUD.") | |
| 625 | ||
| 7a7db8e5 | 626 | (defvar fortran-mode-map |
| 315aa1de | 627 | (let ((map (make-sparse-keymap))) |
| 5b04210c GM |
628 | (define-key map ";" 'fortran-abbrev-start) |
| 629 | (define-key map "\C-c;" 'fortran-comment-region) | |
| 7a05f2bd GM |
630 | ;; The default comment-dwim does at least as much as this. |
| 631 | ;;; (define-key map "\M-;" 'fortran-indent-comment) | |
| 5b04210c | 632 | (define-key map "\M-\n" 'fortran-split-line) |
| 8cb8832f GM |
633 | (define-key map "\M-\C-n" 'fortran-end-of-block) |
| 634 | (define-key map "\M-\C-p" 'fortran-beginning-of-block) | |
| 5b04210c | 635 | (define-key map "\M-\C-q" 'fortran-indent-subprogram) |
| 315aa1de DL |
636 | (define-key map "\C-c\C-w" 'fortran-window-create-momentarily) |
| 637 | (define-key map "\C-c\C-r" 'fortran-column-ruler) | |
| 638 | (define-key map "\C-c\C-p" 'fortran-previous-statement) | |
| 639 | (define-key map "\C-c\C-n" 'fortran-next-statement) | |
| 640 | (define-key map "\C-c\C-d" 'fortran-join-line) ; like f90 | |
| 5b04210c | 641 | (define-key map "\M-^" 'fortran-join-line) ; subvert delete-indentation |
| 315aa1de DL |
642 | (define-key map "0" 'fortran-electric-line-number) |
| 643 | (define-key map "1" 'fortran-electric-line-number) | |
| 644 | (define-key map "2" 'fortran-electric-line-number) | |
| 645 | (define-key map "3" 'fortran-electric-line-number) | |
| 646 | (define-key map "4" 'fortran-electric-line-number) | |
| 647 | (define-key map "5" 'fortran-electric-line-number) | |
| 648 | (define-key map "6" 'fortran-electric-line-number) | |
| 649 | (define-key map "7" 'fortran-electric-line-number) | |
| 650 | (define-key map "8" 'fortran-electric-line-number) | |
| 651 | (define-key map "9" 'fortran-electric-line-number) | |
| 7a7db8e5 | 652 | |
| 5b04210c GM |
653 | (easy-menu-define fortran-menu map "Menu for Fortran mode." |
| 654 | `("Fortran" | |
| 9028691d GM |
655 | ["Manual" (info "(emacs)Fortran") :active t |
| 656 | :help "Read the Emacs manual chapter on Fortran mode"] | |
| 5b04210c GM |
657 | ("Customization" |
| 658 | ,(custom-menu-create 'fortran) | |
| 9028691d GM |
659 | ;; FIXME useless? |
| 660 | ["Set" Custom-set :active t | |
| 661 | :help "Set current value of all edited settings in the buffer"] | |
| 662 | ["Save" Custom-save :active t | |
| 663 | :help "Set and save all edited settings"] | |
| 664 | ["Reset to Current" Custom-reset-current :active t | |
| 665 | :help "Reset all edited settings to current"] | |
| 666 | ["Reset to Saved" Custom-reset-saved :active t | |
| 667 | :help "Reset all edited or set settings to saved"] | |
| 668 | ["Reset to Standard Settings" Custom-reset-standard :active t | |
| 669 | :help "Erase all cusomizations in buffer"] | |
| 5b04210c GM |
670 | ) |
| 671 | "--" | |
| 672 | ["Comment Region" fortran-comment-region mark-active] | |
| 673 | ["Uncomment Region" | |
| 674 | (fortran-comment-region (region-beginning) (region-end) 1) | |
| 675 | mark-active] | |
| 676 | ["Indent Region" indent-region mark-active] | |
| 677 | ["Indent Subprogram" fortran-indent-subprogram t] | |
| 678 | "--" | |
| 9028691d GM |
679 | ["Beginning of Subprogram" fortran-beginning-of-subprogram :active t |
| 680 | :help "Move point to the start of the current subprogram"] | |
| 681 | ["End of Subprogram" fortran-end-of-subprogram :active t | |
| 682 | :help "Move point to the end of the current subprogram"] | |
| 5b04210c | 683 | ("Mark" |
| 9028691d | 684 | :help "Mark a region of code" |
| 5b04210c GM |
685 | ["Subprogram" mark-defun t] |
| 686 | ["IF Block" fortran-mark-if t] | |
| 687 | ["DO Block" fortran-mark-do t] | |
| 688 | ) | |
| 689 | ["Narrow to Subprogram" narrow-to-defun t] | |
| 690 | ["Widen" widen t] | |
| 691 | "--" | |
| 9028691d GM |
692 | ["Temporary Column Ruler" fortran-column-ruler :active t |
| 693 | :help "Briefly display Fortran column numbers"] | |
| 694cf05e GM |
694 | ;; May not be '72', depending on fortran-line-length, but this |
| 695 | ;; seems ok for a menu item. | |
| 9028691d GM |
696 | ["72-column Window" fortran-window-create :active t |
| 697 | :help "Set window width to Fortran line length"] | |
| 5b04210c GM |
698 | ["Full Width Window" |
| 699 | (enlarge-window-horizontally (- (frame-width) (window-width))) | |
| 9028691d GM |
700 | :active (not (window-full-width-p)) |
| 701 | :help "Make window full width"] | |
| 702 | ["Momentary 72-Column Window" fortran-window-create-momentarily | |
| 703 | :active t :help "Briefly set window width to Fortran line length"] | |
| 5b04210c | 704 | "--" |
| 9028691d GM |
705 | ["Break Line at Point" fortran-split-line :active t |
| 706 | :help "Break the current line at point"] | |
| 707 | ["Join Line" fortran-join-line :active t | |
| 708 | :help "Join the current line to the previous one"] | |
| 709 | ["Fill Statement/Comment" fill-paragraph t] | |
| 5b04210c | 710 | "--" |
| 9028691d GM |
711 | ["Toggle Auto Fill" auto-fill-mode :selected auto-fill-function |
| 712 | :style toggle | |
| 713 | :help "Automatically fill text while typing in this buffer"] | |
| 714 | ["Toggle Abbrev Mode" abbrev-mode :selected abbrev-mode | |
| 715 | :style toggle :help "Expand abbreviations while typing in this buffer"] | |
| 716 | ["Add Imenu Menu" imenu-add-menubar-index | |
| 5b04210c | 717 | :active (not (lookup-key (current-local-map) [menu-bar index])) |
| 9028691d GM |
718 | :included (fboundp 'imenu-add-to-menubar) |
| 719 | :help "Add an index menu to the menu-bar"])) | |
| 315aa1de | 720 | map) |
| b8cbdf43 | 721 | "Keymap used in Fortran mode.") |
| 5b04210c | 722 | |
| 3dd63760 | 723 | \f |
| 17cb3e0e GM |
724 | (define-abbrev-table 'fortran-mode-abbrev-table |
| 725 | (mapcar (lambda (e) (list (car e) (cdr e) nil :system t)) | |
| 726 | '((";au" . "automatic" ) | |
| 727 | (";b" . "byte" ) | |
| 728 | (";bd" . "block data" ) | |
| 729 | (";ch" . "character" ) | |
| 730 | (";cl" . "close" ) | |
| 731 | (";c" . "continue" ) | |
| 732 | (";cm" . "common" ) | |
| 733 | (";cx" . "complex" ) | |
| 734 | (";df" . "define" ) | |
| 735 | (";di" . "dimension" ) | |
| 736 | (";do" . "double" ) | |
| 737 | (";dc" . "double complex" ) | |
| 738 | (";dp" . "double precision" ) | |
| 739 | (";dw" . "do while" ) | |
| 740 | (";e" . "else" ) | |
| 741 | (";ed" . "enddo" ) | |
| 742 | (";el" . "elseif" ) | |
| 743 | (";en" . "endif" ) | |
| 744 | (";eq" . "equivalence" ) | |
| 745 | (";ew" . "endwhere" ) | |
| 746 | (";ex" . "external" ) | |
| 747 | (";ey" . "entry" ) | |
| 748 | (";f" . "format" ) | |
| 749 | (";fa" . ".false." ) | |
| 750 | (";fu" . "function" ) | |
| 751 | (";g" . "goto" ) | |
| 752 | (";im" . "implicit" ) | |
| 753 | (";ib" . "implicit byte" ) | |
| 754 | (";ic" . "implicit complex" ) | |
| 755 | (";ich" . "implicit character") | |
| 756 | (";ii" . "implicit integer" ) | |
| 757 | (";il" . "implicit logical" ) | |
| 758 | (";ir" . "implicit real" ) | |
| 759 | (";inc" . "include" ) | |
| 760 | (";in" . "integer" ) | |
| 761 | (";intr" . "intrinsic" ) | |
| 762 | (";l" . "logical" ) | |
| 763 | (";n" . "namelist" ) | |
| 764 | (";o" . "open" ) ; was ;op | |
| 765 | (";pa" . "parameter" ) | |
| 766 | (";pr" . "program" ) | |
| 767 | (";ps" . "pause" ) | |
| 768 | (";p" . "print" ) | |
| 769 | (";rc" . "record" ) | |
| 770 | (";re" . "real" ) | |
| 771 | (";r" . "read" ) | |
| 772 | (";rt" . "return" ) | |
| 773 | (";rw" . "rewind" ) | |
| 774 | (";s" . "stop" ) | |
| 775 | (";sa" . "save" ) | |
| 776 | (";st" . "structure" ) | |
| 777 | (";sc" . "static" ) | |
| 778 | (";su" . "subroutine" ) | |
| 779 | (";tr" . ".true." ) | |
| 780 | (";ty" . "type" ) | |
| 781 | (";vo" . "volatile" ) | |
| 782 | (";w" . "write" ) | |
| 783 | (";wh" . "where" ))) | |
| 784 | "Abbrev table for Fortran mode." | |
| 785 | ;; Accept ; as the first char of an abbrev. Also allow _ in abbrevs. | |
| 786 | :regexp "\\(?:[^[:word:]_;]\\|^\\)\\(;?[[:word:]_]+\\)[^[:word:]_]*") | |
| 7977773d | 787 | |
| 5b04210c | 788 | \f |
| 3dd63760 | 789 | ;;;###autoload |
| e75c1e7d | 790 | (define-derived-mode fortran-mode prog-mode "Fortran" |
| 5b04210c GM |
791 | "Major mode for editing Fortran code in fixed format. |
| 792 | For free format code, use `f90-mode'. | |
| 793 | ||
| 60db3594 | 794 | \\[fortran-indent-line] indents the current Fortran line correctly. |
| 5b04210c | 795 | Note that DO statements must not share a common CONTINUE. |
| 3dd63760 | 796 | |
| 5b04210c GM |
797 | Type ;? or ;\\[help-command] to display a list of built-in abbrevs for\ |
| 798 | Fortran keywords. | |
| 3dd63760 JB |
799 | |
| 800 | Key definitions: | |
| 801 | \\{fortran-mode-map} | |
| 802 | ||
| 803 | Variables controlling indentation style and extra features: | |
| 804 | ||
| 8cb8832f | 805 | `fortran-comment-line-start' |
| 5b04210c GM |
806 | To use comments starting with `!', set this to the string \"!\". |
| 807 | `fortran-do-indent' | |
| 808 | Extra indentation within DO blocks (default 3). | |
| 809 | `fortran-if-indent' | |
| 810 | Extra indentation within IF blocks (default 3). | |
| 811 | `fortran-structure-indent' | |
| 812 | Extra indentation within STRUCTURE, UNION, MAP and INTERFACE blocks. | |
| 813 | (default 3) | |
| 814 | `fortran-continuation-indent' | |
| 815 | Extra indentation applied to continuation statements (default 5). | |
| 816 | `fortran-comment-line-extra-indent' | |
| 817 | Amount of extra indentation for text in full-line comments (default 0). | |
| 818 | `fortran-comment-indent-style' | |
| 819 | How to indent the text in full-line comments. Allowed values are: | |
| 820 | nil don't change the indentation | |
| 821 | fixed indent to `fortran-comment-line-extra-indent' beyond the | |
| 822 | value of either | |
| 823 | `fortran-minimum-statement-indent-fixed' (fixed format) or | |
| 824 | `fortran-minimum-statement-indent-tab' (TAB format), | |
| 825 | depending on the continuation format in use. | |
| 826 | relative indent to `fortran-comment-line-extra-indent' beyond the | |
| 9d23c925 | 827 | indentation for a line of code. |
| 5b04210c GM |
828 | (default 'fixed) |
| 829 | `fortran-comment-indent-char' | |
| 830 | Single-character string to be inserted instead of space for | |
| 831 | full-line comment indentation (default \" \"). | |
| 832 | `fortran-minimum-statement-indent-fixed' | |
| 833 | Minimum indentation for statements in fixed format mode (default 6). | |
| 834 | `fortran-minimum-statement-indent-tab' | |
| 835 | Minimum indentation for statements in TAB format mode (default 9). | |
| 836 | `fortran-line-number-indent' | |
| 837 | Maximum indentation for line numbers (default 1). A line number will | |
| 838 | get less than this much indentation if necessary to avoid reaching | |
| 839 | column 5. | |
| 840 | `fortran-check-all-num-for-matching-do' | |
| 841 | Non-nil causes all numbered lines to be treated as possible \"continue\" | |
| 842 | statements (default nil). | |
| 843 | `fortran-blink-matching-if' | |
| 844 | Non-nil causes \\[fortran-indent-line] on an ENDIF (or ENDDO) statement | |
| 845 | to blink on the matching IF (or DO [WHILE]). (default nil) | |
| 846 | `fortran-continuation-string' | |
| 847 | Single-character string to be inserted in column 5 of a continuation | |
| 848 | line (default \"$\"). | |
| 849 | `fortran-comment-region' | |
| 850 | String inserted by \\[fortran-comment-region] at start of each line in | |
| 851 | the region (default \"c$$$\"). | |
| 852 | `fortran-electric-line-number' | |
| 853 | Non-nil causes line number digits to be moved to the correct column | |
| 854 | as typed (default t). | |
| 855 | `fortran-break-before-delimiters' | |
| 856 | Non-nil causes lines to be broken before delimiters (default t). | |
| 3dd63760 | 857 | |
| b8cbdf43 | 858 | Turning on Fortran mode calls the value of the variable `fortran-mode-hook' |
| 3dd63760 | 859 | with no args, if that value is non-nil." |
| e75c1e7d GM |
860 | :group 'fortran |
| 861 | :syntax-table fortran-mode-syntax-table | |
| 862 | :abbrev-table fortran-mode-abbrev-table | |
| 5b04210c GM |
863 | (set (make-local-variable 'indent-line-function) 'fortran-indent-line) |
| 864 | (set (make-local-variable 'indent-region-function) | |
| 865 | (lambda (start end) | |
| 866 | (let (fortran-blink-matching-if ; avoid blinking delay | |
| 867 | indent-region-function) | |
| 868 | (indent-region start end nil)))) | |
| fd98e23a | 869 | (set (make-local-variable 'require-final-newline) mode-require-final-newline) |
| 5b04210c GM |
870 | ;; The syntax tables don't understand the column-0 comment-markers. |
| 871 | (set (make-local-variable 'comment-use-syntax) nil) | |
| 872 | (set (make-local-variable 'comment-padding) "$$$") | |
| 873 | (set (make-local-variable 'comment-start) fortran-comment-line-start) | |
| ff451e17 SM |
874 | (set (make-local-variable 'comment-start-skip) |
| 875 | ;; We can't reuse `fortran-comment-line-start-skip' directly because | |
| 876 | ;; it contains backrefs whereas we need submatch-1 to end at the | |
| 877 | ;; beginning of the comment delimiter. | |
| 878 | ;; (concat "\\(\\)\\(![ \t]*\\|" fortran-comment-line-start-skip "\\)") | |
| 879 | "\\(\\)\\(?:^[CcDd*]\\|!\\)\\(?:\\([^ \t\n]\\)\\2+\\)?[ \t]*") | |
| 5b04210c | 880 | (set (make-local-variable 'comment-indent-function) 'fortran-comment-indent) |
| 7a05f2bd GM |
881 | (set (make-local-variable 'comment-region-function) 'fortran-comment-region) |
| 882 | (set (make-local-variable 'uncomment-region-function) | |
| 883 | 'fortran-uncomment-region) | |
| 884 | (set (make-local-variable 'comment-insert-comment-function) | |
| 885 | 'fortran-indent-comment) | |
| 5b04210c GM |
886 | (set (make-local-variable 'abbrev-all-caps) t) |
| 887 | (set (make-local-variable 'normal-auto-fill-function) 'fortran-auto-fill) | |
| 5b04210c | 888 | (set (make-local-variable 'indent-tabs-mode) (fortran-analyze-file-format)) |
| a7113309 | 889 | (setq mode-line-process '(indent-tabs-mode fortran-tab-mode-string)) |
| 694cf05e | 890 | (set (make-local-variable 'fill-column) fortran-line-length) |
| 1eb6bf70 | 891 | (set (make-local-variable 'fill-paragraph-function) 'fortran-fill-paragraph) |
| 5b04210c GM |
892 | (set (make-local-variable 'font-lock-defaults) |
| 893 | '((fortran-font-lock-keywords | |
| 894 | fortran-font-lock-keywords-1 | |
| 895 | fortran-font-lock-keywords-2 | |
| 8cb8832f GM |
896 | fortran-font-lock-keywords-3 |
| 897 | fortran-font-lock-keywords-4) | |
| 5b04210c | 898 | nil t ((?/ . "$/") ("_$" . "w")) |
| cf38dd42 | 899 | fortran-beginning-of-subprogram)) |
| cf38dd42 | 900 | (set (make-local-variable 'syntax-propertize-function) |
| b879a6e2 | 901 | (fortran-make-syntax-propertize-function fortran-line-length)) |
| 5b04210c GM |
902 | (set (make-local-variable 'imenu-case-fold-search) t) |
| 903 | (set (make-local-variable 'imenu-generic-expression) | |
| 904 | fortran-imenu-generic-expression) | |
| 905 | (set (make-local-variable 'imenu-syntax-alist) '(("_$" . "w"))) | |
| 26ef1c87 DL |
906 | (set (make-local-variable 'beginning-of-defun-function) |
| 907 | #'fortran-beginning-of-subprogram) | |
| 908 | (set (make-local-variable 'end-of-defun-function) | |
| 909 | #'fortran-end-of-subprogram) | |
| 68ca306c DL |
910 | (set (make-local-variable 'add-log-current-defun-function) |
| 911 | #'fortran-current-defun) | |
| 315aa1de | 912 | (set (make-local-variable 'dabbrev-case-fold-search) 'case-fold-search) |
| 5727e748 | 913 | (set (make-local-variable 'gud-find-expr-function) 'fortran-gud-find-expr) |
| e75c1e7d | 914 | (add-hook 'hack-local-variables-hook 'fortran-hack-local-variables nil t)) |
| 5b04210c | 915 | |
| 3dd63760 | 916 | \f |
| 694cf05e GM |
917 | (defun fortran-line-length (nchars &optional global) |
| 918 | "Set the length of fixed-form Fortran lines to NCHARS. | |
| 919 | This normally only affects the current buffer, which must be in | |
| 920 | Fortran mode. If the optional argument GLOBAL is non-nil, it | |
| b879a6e2 SM |
921 | affects all Fortran buffers, and also the default. |
| 922 | If a numeric prefix argument is specified, it will be used as NCHARS, | |
| 923 | otherwise is a non-numeric prefix arg is specified, the length will be | |
| 924 | provided via the minibuffer, and otherwise the current column is used." | |
| 925 | (interactive | |
| 926 | (list (cond | |
| 927 | ((numberp current-prefix-arg) current-prefix-arg) | |
| 928 | (current-prefix-arg | |
| 929 | (read-number "Line length: " (default-value 'fortran-line-length))) | |
| 930 | (t (current-column))))) | |
| 931 | (dolist (buff (if global | |
| 932 | (buffer-list) | |
| 933 | (list (current-buffer)))) | |
| 934 | (with-current-buffer buff | |
| 935 | (when (derived-mode-p 'fortran-mode) | |
| 936 | (unless (eq fortran-line-length nchars) | |
| 937 | (setq fortran-line-length nchars | |
| 938 | fill-column fortran-line-length | |
| 939 | syntax-propertize-function | |
| 940 | (fortran-make-syntax-propertize-function nchars)) | |
| 941 | (syntax-ppss-flush-cache (point-min)) | |
| 942 | (if font-lock-mode (font-lock-mode 1)))))) | |
| 8c5de2a1 | 943 | (if global |
| b879a6e2 | 944 | (setq-default fortran-line-length nchars))) |
| 694cf05e GM |
945 | |
| 946 | (defun fortran-hack-local-variables () | |
| 947 | "Fortran mode adds this to `hack-local-variables-hook'." | |
| 948 | (fortran-line-length fortran-line-length)) | |
| 949 | ||
| 2e49e9f7 GM |
950 | (declare-function gud-find-c-expr "gud.el" nil) |
| 951 | ||
| 5727e748 SM |
952 | (defun fortran-gud-find-expr () |
| 953 | ;; Consider \n as punctuation (end of expression). | |
| 954 | (with-syntax-table fortran-gud-syntax-table | |
| 955 | (gud-find-c-expr))) | |
| 956 | ||
| 315aa1de | 957 | (defsubst fortran-comment-indent () |
| 5b04210c GM |
958 | "Return the indentation appropriate for the current comment line. |
| 959 | This is 0 for a line matching `fortran-comment-line-start-skip', else | |
| 960 | the value of `comment-column' (leaving at least one space after code)." | |
| 961 | (if (looking-at fortran-comment-line-start-skip) 0 | |
| 962 | (save-excursion | |
| ff451e17 | 963 | (skip-chars-backward " \t") |
| 0a39a75c | 964 | (max (1+ (current-column)) comment-column)))) |
| 3dd63760 JB |
965 | |
| 966 | (defun fortran-indent-comment () | |
| 967 | "Align or create comment on current line. | |
| 968 | Existing comments of all types are recognized and aligned. | |
| 5b04210c | 969 | If the line has no comment, a side-by-side comment is inserted and aligned, |
| ff451e17 | 970 | if the value of `comment-start' is not nil and allows such comments. |
| 3dd63760 JB |
971 | Otherwise, a separate-line comment is inserted, on this line |
| 972 | or on a new line inserted before this line if this line is not blank." | |
| 5b04210c | 973 | (interactive "*") |
| 3dd63760 JB |
974 | (beginning-of-line) |
| 975 | ;; Recognize existing comments of either kind. | |
| ff451e17 | 976 | (cond ((fortran-find-comment-start-skip 'all) |
| 9d23c925 GM |
977 | (goto-char (match-beginning 0)) |
| 978 | (if (bolp) | |
| 979 | (fortran-indent-line) | |
| 980 | (unless (= (current-column) (fortran-comment-indent)) | |
| 5b04210c GM |
981 | (delete-horizontal-space) |
| 982 | (indent-to (fortran-comment-indent))))) | |
| 9d23c925 GM |
983 | ;; No existing comment. |
| 984 | ;; If side-by-side comments are defined, insert one, | |
| 985 | ;; unless line is now blank. | |
| 986 | ((and comment-start (not (looking-at "[ \t]*$")) | |
| 987 | (string-match comment-start-skip (concat " " comment-start))) | |
| 988 | (end-of-line) | |
| 989 | (delete-horizontal-space) | |
| 990 | (indent-to (fortran-comment-indent)) | |
| 991 | (insert comment-start)) | |
| 992 | ;; Else insert separate-line comment, making a new line if nec. | |
| 993 | (t | |
| 994 | (if (looking-at "^[ \t]*$") | |
| 995 | (delete-horizontal-space) | |
| 996 | (beginning-of-line) | |
| 997 | (insert ?\n) | |
| 998 | (forward-char -1)) | |
| 999 | (insert fortran-comment-line-start) | |
| 1000 | (insert-char (if (stringp fortran-comment-indent-char) | |
| 1001 | (aref fortran-comment-indent-char 0) | |
| 1002 | fortran-comment-indent-char) | |
| 1003 | (- (fortran-calculate-indent) (current-column)))))) | |
| 3dd63760 JB |
1004 | |
| 1005 | (defun fortran-comment-region (beg-region end-region arg) | |
| 5b04210c GM |
1006 | "Comment every line in the region. |
| 1007 | Inserts the string variable `fortran-comment-region' at the beginning of | |
| 1008 | every line in the region. | |
| 1009 | BEG-REGION and END-REGION specify the region boundaries. | |
| 3dd63760 JB |
1010 | With non-nil ARG, uncomments the region." |
| 1011 | (interactive "*r\nP") | |
| b937fd1e | 1012 | (let ((end-region-mark (copy-marker end-region)) |
| 9d23c925 | 1013 | (save-point (point-marker))) |
| 3dd63760 JB |
1014 | (goto-char beg-region) |
| 1015 | (beginning-of-line) | |
| 5b04210c | 1016 | (if arg |
| 0a39a75c | 1017 | (let ((com (regexp-quote fortran-comment-region))) ; uncomment |
| 5b04210c GM |
1018 | (if (looking-at com) |
| 1019 | (delete-region (point) (match-end 0))) | |
| 1020 | (while (and (zerop (forward-line 1)) | |
| 1021 | (< (point) end-region-mark)) | |
| 1022 | (if (looking-at com) | |
| 1023 | (delete-region (point) (match-end 0))))) | |
| 0a39a75c | 1024 | (insert fortran-comment-region) ; comment |
| 5b04210c GM |
1025 | (while (and (zerop (forward-line 1)) |
| 1026 | (< (point) end-region-mark)) | |
| 1027 | (insert fortran-comment-region))) | |
| 3dd63760 JB |
1028 | (goto-char save-point) |
| 1029 | (set-marker end-region-mark nil) | |
| 1030 | (set-marker save-point nil))) | |
| 5b04210c | 1031 | |
| 7a05f2bd GM |
1032 | ;; uncomment-region calls this with 3 args. |
| 1033 | (defun fortran-uncomment-region (start end &optional ignored) | |
| 1034 | "Uncomment every line in the region." | |
| 1035 | (fortran-comment-region start end t)) | |
| 1036 | ||
| 3dd63760 JB |
1037 | \f |
| 1038 | (defun fortran-abbrev-start () | |
| 60db3594 | 1039 | "Typing ;\\[help-command] or ;? lists all the Fortran abbrevs. |
| 3dd63760 | 1040 | Any other key combination is executed normally." |
| 5b04210c | 1041 | (interactive "*") |
| 1ba983e8 | 1042 | (insert last-command-event) |
| 5d724235 SM |
1043 | (let* ((event (if (fboundp 'next-command-event) ; XEmacs |
| 1044 | (next-command-event) | |
| 1045 | (read-event))) | |
| 1046 | (char (if (fboundp 'event-to-character) | |
| 1047 | (event-to-character event) event))) | |
| be35ca9f | 1048 | ;; Insert char if not equal to `?', or if abbrev-mode is off. |
| 5d724235 SM |
1049 | (if (and abbrev-mode (or (eq char ??) (eq char help-char) |
| 1050 | (memq event help-event-list))) | |
| 9d23c925 | 1051 | (fortran-abbrev-help) |
| 5d724235 | 1052 | (push event unread-command-events)))) |
| 3dd63760 JB |
1053 | |
| 1054 | (defun fortran-abbrev-help () | |
| 1055 | "List the currently defined abbrevs in Fortran mode." | |
| 1056 | (interactive) | |
| 1057 | (message "Listing abbrev table...") | |
| e80f2147 | 1058 | (display-buffer (fortran-prepare-abbrev-list-buffer)) |
| 3dd63760 JB |
1059 | (message "Listing abbrev table...done")) |
| 1060 | ||
| e80f2147 | 1061 | (defun fortran-prepare-abbrev-list-buffer () |
| 5b04210c | 1062 | "Create a buffer listing the Fortran mode abbreviations." |
| 5d724235 | 1063 | (with-current-buffer (get-buffer-create "*Abbrevs*") |
| e80f2147 | 1064 | (erase-buffer) |
| 4632a893 | 1065 | (insert-abbrev-table-description 'fortran-mode-abbrev-table t) |
| e80f2147 RS |
1066 | (goto-char (point-min)) |
| 1067 | (set-buffer-modified-p nil) | |
| 1068 | (edit-abbrevs-mode)) | |
| 1069 | (get-buffer-create "*Abbrevs*")) | |
| 1070 | ||
| 3dd63760 | 1071 | (defun fortran-column-ruler () |
| 7977773d | 1072 | "Insert a column ruler momentarily above current line, till next keystroke. |
| 0a39a75c GM |
1073 | The ruler is defined by the value of `fortran-column-ruler-fixed' in fixed |
| 1074 | format mode, and `fortran-column-ruler-tab' in TAB format mode. | |
| 1075 | The next key typed is executed unless it is SPC." | |
| 3dd63760 | 1076 | (interactive) |
| 60db3594 | 1077 | (momentary-string-display |
| 23029d77 JB |
1078 | (if indent-tabs-mode |
| 1079 | fortran-column-ruler-tab | |
| 1080 | fortran-column-ruler-fixed) | |
| 1081 | (save-excursion | |
| 60db3594 | 1082 | (beginning-of-line) |
| 23029d77 | 1083 | (if (eq (window-start (selected-window)) |
| 9d23c925 GM |
1084 | (window-point (selected-window))) |
| 1085 | (line-beginning-position 2) | |
| 23029d77 | 1086 | (point))) |
| 3dd63760 JB |
1087 | nil "Type SPC or any command to erase ruler.")) |
| 1088 | ||
| 1089 | (defun fortran-window-create () | |
| 694cf05e | 1090 | "Make the window `fortran-line-length' (default 72) columns wide. |
| fe668515 | 1091 | See also `fortran-window-create-momentarily'." |
| 3dd63760 | 1092 | (interactive) |
| b2523604 | 1093 | (let ((window-min-width 2)) |
| ca03b5a9 | 1094 | (unless (window-full-width-p) |
| 9d23c925 GM |
1095 | (enlarge-window-horizontally (- (frame-width) |
| 1096 | (window-width) 1))) | |
| b2523604 | 1097 | (let* ((window-edges (window-edges)) |
| 9d23c925 GM |
1098 | (scroll-bar-width (- (nth 2 window-edges) |
| 1099 | (car window-edges) | |
| 1100 | (window-width)))) | |
| 694cf05e | 1101 | (split-window-horizontally (+ fortran-line-length scroll-bar-width))) |
| b2523604 DL |
1102 | (other-window 1) |
| 1103 | (switch-to-buffer " fortran-window-extra" t) | |
| 1104 | (select-window (previous-window)))) | |
| 3dd63760 JB |
1105 | |
| 1106 | (defun fortran-window-create-momentarily (&optional arg) | |
| 694cf05e | 1107 | "Momentarily make the window `fortran-line-length' (default 72) columns wide. |
| 3dd63760 | 1108 | Optional ARG non-nil and non-unity disables the momentary feature. |
| fe668515 | 1109 | See also `fortran-window-create'." |
| 3dd63760 JB |
1110 | (interactive "p") |
| 1111 | (if (or (not arg) | |
| 9d23c925 | 1112 | (= arg 1)) |
| 3dd63760 | 1113 | (save-window-excursion |
| 9d23c925 GM |
1114 | (progn |
| 1115 | (condition-case nil | |
| 1116 | (fortran-window-create) | |
| 1117 | (error (error "No room for Fortran window"))) | |
| 1118 | (message "Type SPC to continue editing.") | |
| 1119 | (let ((char (read-event))) | |
| 1120 | (or (equal char ?\s) | |
| 1121 | (setq unread-command-events (list char)))))) | |
| 3dd63760 JB |
1122 | (fortran-window-create))) |
| 1123 | ||
| 1124 | (defun fortran-split-line () | |
| 1125 | "Break line at point and insert continuation marker and alignment." | |
| 5b04210c | 1126 | (interactive "*") |
| 3dd63760 | 1127 | (delete-horizontal-space) |
| 7dae727d | 1128 | (if (save-excursion |
| 9d23c925 GM |
1129 | (let ((pos (point))) |
| 1130 | (beginning-of-line) | |
| 1131 | (and (fortran-find-comment-start-skip 'all) | |
| 1132 | (< (match-beginning 0) pos)))) | |
| ff451e17 | 1133 | (insert ?\n (match-string 0)) |
| 23029d77 | 1134 | (if indent-tabs-mode |
| 9d23c925 | 1135 | (insert ?\n ?\t (fortran-numerical-continuation-char)) |
| 0a39a75c GM |
1136 | (insert "\n " fortran-continuation-string))) ; space after \n important |
| 1137 | (fortran-indent-line)) ; when cont string is C, c or * | |
| 1eb6bf70 DL |
1138 | |
| 1139 | (defun fortran-remove-continuation () | |
| 5b04210c GM |
1140 | "Delete any Fortran continuation characters at point. |
| 1141 | Returns t if anything actually deleted." | |
| 1142 | (when (looking-at "\\( \\{5\\}[^ 0\n]\\|\t[1-9]\\|&\\)") | |
| 1143 | (replace-match "") | |
| 1144 | (delete-indentation) | |
| 1145 | t)) | |
| 3dd63760 | 1146 | |
| 46d4d7bf DL |
1147 | (defun fortran-join-line (arg) |
| 1148 | "Join current line to the previous one and re-indent. | |
| 1149 | With a prefix argument, repeat this operation that many times. | |
| 1150 | If the prefix argument ARG is negative, join the next -ARG lines. | |
| 1151 | Continuation lines are correctly handled." | |
| 1152 | (interactive "*p") | |
| 7977773d | 1153 | (save-excursion |
| 46d4d7bf DL |
1154 | (when (> 0 arg) |
| 1155 | (setq arg (- arg)) | |
| 1156 | (forward-line arg)) | |
| 1157 | (while (not (zerop arg)) | |
| 1158 | (beginning-of-line) | |
| 1159 | (or (fortran-remove-continuation) | |
| 1160 | (delete-indentation)) | |
| 1161 | (setq arg (1- arg))) | |
| 7977773d DL |
1162 | (fortran-indent-line))) |
| 1163 | ||
| 3dd63760 | 1164 | (defun fortran-numerical-continuation-char () |
| b56eb7c9 | 1165 | "Return a digit for tab-digit style of continuation lines. |
| 5b04210c GM |
1166 | If previous line is a tab-digit continuation line, return that digit |
| 1167 | plus one, otherwise return 1. Zero not allowed." | |
| 3dd63760 JB |
1168 | (save-excursion |
| 1169 | (forward-line -1) | |
| 1170 | (if (looking-at "\t[1-9]") | |
| 9d23c925 | 1171 | (+ ?1 (% (- (char-after (1+ (point))) ?0) 9)) |
| 3dd63760 JB |
1172 | ?1))) |
| 1173 | ||
| 556dd629 | 1174 | (put 'fortran-electric-line-number 'delete-selection t) |
| 3dd63760 JB |
1175 | (defun fortran-electric-line-number (arg) |
| 1176 | "Self insert, but if part of a Fortran line number indent it automatically. | |
| 7977773d | 1177 | Auto-indent does not happen if a numeric ARG is used." |
| 5b04210c | 1178 | (interactive "*P") |
| 3dd63760 | 1179 | (if (or arg (not fortran-electric-line-number)) |
| 60db3594 | 1180 | (if arg |
| 9d23c925 GM |
1181 | (self-insert-command (prefix-numeric-value arg)) |
| 1182 | (self-insert-command 1)) | |
| 3dd63760 | 1183 | (if (or (and (= 5 (current-column)) |
| 9d23c925 GM |
1184 | (save-excursion |
| 1185 | (beginning-of-line) | |
| 5b04210c | 1186 | ;; In col 5 with only spaces to the left. |
| 9d23c925 GM |
1187 | (looking-at " \\{5\\}"))) |
| 1188 | (and (= (if indent-tabs-mode | |
| 1189 | fortran-minimum-statement-indent-tab | |
| 1190 | fortran-minimum-statement-indent-fixed) (current-column)) | |
| 5b04210c | 1191 | ;; In col 8 with a single tab to the left. |
| 9d23c925 GM |
1192 | (eq ?\t (char-after (line-beginning-position))) |
| 1193 | (not (or (eq last-command 'fortran-indent-line) | |
| 1194 | (eq last-command | |
| 1195 | 'fortran-indent-new-line)))) | |
| 1196 | (save-excursion | |
| 1197 | (re-search-backward "[^ \t0-9]" | |
| 1198 | (line-beginning-position) | |
| 1199 | t)) ; not a line number | |
| 1200 | (looking-at "[0-9]")) ; within a line number | |
| 1201 | (self-insert-command (prefix-numeric-value arg)) | |
| 3dd63760 | 1202 | (skip-chars-backward " \t") |
| 1ba983e8 | 1203 | (insert last-command-event) |
| 3dd63760 | 1204 | (fortran-indent-line)))) |
| 5b04210c | 1205 | |
| 3dd63760 | 1206 | \f |
| 823ab5da DL |
1207 | (defun fortran-check-end-prog-re () |
| 1208 | "Check a preliminary match against `fortran-end-prog-re'." | |
| 1209 | ;; Having got a possible match for the subprogram end, we need a | |
| 1210 | ;; match of whitespace, avoiding possible column 73+ stuff. | |
| 1211 | (save-match-data | |
| bd6cabcf | 1212 | (string-match "^\\s-*\\(\\'\\|\\s<\\)" |
| 9d23c925 GM |
1213 | (buffer-substring (match-end 0) |
| 1214 | (min (line-end-position) | |
| 1215 | (+ fortran-line-length | |
| 694cf05e | 1216 | (line-beginning-position))))))) |
| 823ab5da | 1217 | |
| 4a948dbf GM |
1218 | ;; This is more complex than first expected because the beginning of a |
| 1219 | ;; main program may be implicit (ie not marked by a PROGRAM statement). | |
| 1220 | ;; This would be fine (we could just go to bob in the absence of a match), | |
| 1221 | ;; except it need not even be the first subprogram in the file (eg it | |
| 1222 | ;; could follow a subroutine). Hence we have to search for END | |
| 1223 | ;; statements instead. | |
| 1224 | ;; cf fortran-beginning-of-block, f90-beginning-of-subprogram | |
| 1225 | ;; Note that unlike the latter, we don't have to worry about nested | |
| 1226 | ;; subprograms (?). | |
| 1227 | ;; FIXME push-mark? | |
| 7dae727d | 1228 | (defun fortran-beginning-of-subprogram () |
| b2523604 | 1229 | "Move point to the beginning of the current Fortran subprogram." |
| 3dd63760 | 1230 | (interactive) |
| 4a948dbf GM |
1231 | (let ((case-fold-search t)) |
| 1232 | ;; If called already at the start of subprogram, go to the previous. | |
| 1233 | (beginning-of-line (if (bolp) 0 1)) | |
| 1234 | (save-match-data | |
| 1235 | (or (looking-at fortran-start-prog-re) | |
| 1236 | ;; This leaves us at bob if before the first subprogram. | |
| 1237 | (eq (fortran-previous-statement) 'first-statement) | |
| 1238 | (if (or (catch 'ok | |
| 1239 | (while (re-search-backward fortran-end-prog-re nil 'move) | |
| 1240 | (if (fortran-check-end-prog-re) (throw 'ok t)))) | |
| 1241 | ;; If the search failed, must be at bob. | |
| 1242 | ;; First code line is the start of the subprogram. | |
| 1243 | ;; FIXME use a more rigorous test, cf fortran-next-statement? | |
| 1244 | ;; Though that needs to handle continuations too. | |
| 1245 | (not (looking-at "^\\([ \t]*[0-9]\\|[ \t]+[^!#]\\)"))) | |
| 1246 | (fortran-next-statement)))))) | |
| 1247 | ||
| 1248 | ;; This is simpler than f-beginning-of-s because the end of a | |
| 1249 | ;; subprogram is never implicit. | |
| 7dae727d | 1250 | (defun fortran-end-of-subprogram () |
| b2523604 | 1251 | "Move point to the end of the current Fortran subprogram." |
| 3dd63760 | 1252 | (interactive) |
| 4a948dbf GM |
1253 | (let ((case-fold-search t)) |
| 1254 | (beginning-of-line) | |
| 1255 | (save-match-data | |
| 1256 | (while (and (re-search-forward fortran-end-prog-re nil 'move) | |
| 1257 | (not (fortran-check-end-prog-re)))) | |
| 1258 | (forward-line)))) | |
| 3dd63760 | 1259 | |
| 3dd63760 | 1260 | (defun fortran-previous-statement () |
| b2523604 | 1261 | "Move point to beginning of the previous Fortran statement. |
| 8edfcc7d GM |
1262 | Returns 'first-statement if that statement is the first |
| 1263 | non-comment Fortran statement in the file, and nil otherwise. | |
| 5a73972b | 1264 | Directive lines are treated as comments." |
| 3dd63760 JB |
1265 | (interactive) |
| 1266 | (let (not-first-statement continue-test) | |
| 1267 | (beginning-of-line) | |
| 1268 | (setq continue-test | |
| 9d23c925 GM |
1269 | (and |
| 1270 | (not (looking-at fortran-comment-line-start-skip)) | |
| 5a73972b | 1271 | (not (looking-at fortran-directive-re)) |
| 9d23c925 GM |
1272 | (or (looking-at |
| 1273 | (concat "[ \t]*" | |
| 1274 | (regexp-quote fortran-continuation-string))) | |
| 1275 | (looking-at " \\{5\\}[^ 0\n]\\|\t[1-9]")))) | |
| 5b04210c | 1276 | (while (and (setq not-first-statement (zerop (forward-line -1))) |
| 9d23c925 | 1277 | (or (looking-at fortran-comment-line-start-skip) |
| 5a73972b | 1278 | (looking-at fortran-directive-re) |
| 98110b1f GM |
1279 | (looking-at |
| 1280 | (concat "[ \t]*" | |
| 1281 | (regexp-quote fortran-continuation-string))) | |
| 9d23c925 GM |
1282 | (looking-at "[ \t]*$\\| \\{5\\}[^ 0\n]\\|\t[1-9]") |
| 1283 | (looking-at (concat "[ \t]*" comment-start-skip))))) | |
| 3dd63760 | 1284 | (cond ((and continue-test |
| 9d23c925 GM |
1285 | (not not-first-statement)) |
| 1286 | (message "Incomplete continuation statement.")) | |
| 1287 | (continue-test | |
| 1288 | (fortran-previous-statement)) | |
| 1289 | ((not not-first-statement) | |
| 1290 | 'first-statement)))) | |
| 3dd63760 JB |
1291 | |
| 1292 | (defun fortran-next-statement () | |
| b2523604 | 1293 | "Move point to beginning of the next Fortran statement. |
| 8edfcc7d GM |
1294 | Returns 'last-statement if that statement is the last |
| 1295 | non-comment Fortran statement in the file, and nil otherwise. | |
| 5a73972b | 1296 | Directive lines are treated as comments." |
| 3dd63760 JB |
1297 | (interactive) |
| 1298 | (let (not-last-statement) | |
| 1299 | (beginning-of-line) | |
| b8cbdf43 | 1300 | (while (and (setq not-last-statement |
| 9d23c925 GM |
1301 | (and (zerop (forward-line 1)) |
| 1302 | (not (eobp)))) | |
| 1303 | (or (looking-at fortran-comment-line-start-skip) | |
| 5a73972b | 1304 | (looking-at fortran-directive-re) |
| 9d23c925 GM |
1305 | (looking-at "[ \t]*$\\| [^ 0\n]\\|\t[1-9]") |
| 1306 | (looking-at (concat "[ \t]*" comment-start-skip))))) | |
| 3dd63760 | 1307 | (if (not not-last-statement) |
| 9d23c925 | 1308 | 'last-statement))) |
| 5b04210c | 1309 | |
| 8cb8832f GM |
1310 | (defun fortran-looking-at-if-then () |
| 1311 | "Return non-nil if at the start of a line with an IF ... THEN statement." | |
| 1312 | ;; cf f90-looking-at-if-then. | |
| 1313 | (let ((p (point)) | |
| 1314 | (i (fortran-beginning-if))) | |
| 1315 | (if i | |
| 1316 | (save-excursion | |
| 1317 | (goto-char i) | |
| 9b026d9f | 1318 | (= (line-beginning-position) p))))) |
| 8cb8832f GM |
1319 | |
| 1320 | ;; Used in hs-special-modes-alist. | |
| 1321 | (defun fortran-end-of-block (&optional num) | |
| 1322 | "Move point forward to the end of the current code block. | |
| 1323 | With optional argument NUM, go forward that many balanced blocks. | |
| 1324 | If NUM is negative, go backward to the start of a block. Does | |
| 1325 | not check for consistency of block types. Interactively, pushes | |
| 1326 | mark before moving point." | |
| 1327 | (interactive "p") | |
| d47afbc0 | 1328 | (if (called-interactively-p 'any) (push-mark (point) t)) |
| 8cb8832f GM |
1329 | (and num (< num 0) (fortran-beginning-of-block (- num))) |
| 1330 | (let ((case-fold-search t) | |
| 1331 | (count (or num 1))) | |
| 1332 | (end-of-line) | |
| 1333 | (while (and (> count 0) | |
| 1334 | (re-search-forward | |
| 1335 | (concat "\\(" fortran-blocks-re | |
| 1336 | (if fortran-check-all-num-for-matching-do | |
| 1337 | "\\|^[ \t]*[0-9]+" "") | |
| 1338 | "\\|continue\\|end\\)\\>") | |
| 1339 | nil 'move)) | |
| 1340 | (beginning-of-line) | |
| 1341 | (if (if (looking-at (concat "^[0-9 \t]*" fortran-if-start-re)) | |
| 1342 | (fortran-looking-at-if-then) | |
| 1343 | (looking-at fortran-start-block-re)) | |
| 1344 | (setq count (1+ count)) | |
| 1345 | (if (or (looking-at fortran-end-block-re) | |
| 1346 | (and (or (looking-at "^[0-9 \t]*continue") | |
| 1347 | (and fortran-check-all-num-for-matching-do | |
| 1348 | (looking-at "[ \t]*[0-9]+"))) | |
| 1349 | (fortran-check-for-matching-do))) | |
| 1350 | (setq count (1- count)))) | |
| 1351 | (end-of-line)) | |
| 1352 | (if (> count 0) (error "Missing block end")))) | |
| 1353 | ||
| 1354 | (defun fortran-beginning-of-block (&optional num) | |
| 1355 | "Move point backwards to the start of the current code block. | |
| 1356 | With optional argument NUM, go backward that many balanced | |
| 1357 | blocks. If NUM is negative, go forward to the end of a block. | |
| 1358 | Does not check for consistency of block types. Interactively, | |
| 1359 | pushes mark before moving point." | |
| 1360 | (interactive "p") | |
| d47afbc0 | 1361 | (if (called-interactively-p 'any) (push-mark (point) t)) |
| 8cb8832f GM |
1362 | (and num (< num 0) (fortran-end-of-block (- num))) |
| 1363 | (let ((case-fold-search t) | |
| 1364 | (count (or num 1))) | |
| 1365 | (beginning-of-line) | |
| 1366 | (while (and (> count 0) | |
| 1367 | (re-search-backward | |
| 1368 | (concat "\\(" fortran-blocks-re | |
| 1369 | (if fortran-check-all-num-for-matching-do | |
| 1370 | "\\|^[ \t]*[0-9]+" "") | |
| 1371 | "\\|continue\\|end\\)\\>") | |
| 1372 | nil 'move)) | |
| 1373 | (beginning-of-line) | |
| 1374 | (if (if (looking-at (concat "^[0-9 \t]*" fortran-if-start-re)) | |
| 1375 | (fortran-looking-at-if-then) | |
| 1376 | (looking-at fortran-start-block-re)) | |
| 1377 | (setq count (1- count)) | |
| 1378 | (if (or (looking-at fortran-end-block-re) | |
| 1379 | (and (or (looking-at "^[0-9 \t]*continue") | |
| 1380 | (and fortran-check-all-num-for-matching-do | |
| 1381 | (looking-at "[ \t]*[0-9]+"))) | |
| 1382 | (fortran-check-for-matching-do))) | |
| 1383 | (setq count (1+ count))))) | |
| 1384 | ;; Includes an un-named main program block. | |
| 1385 | (if (> count 0) (error "Missing block start")))) | |
| 1386 | ||
| 3dd63760 | 1387 | \f |
| 7dae727d DL |
1388 | (defun fortran-blink-match (regex keyword find-begin) |
| 1389 | "From a line matching REGEX, blink matching KEYWORD statement line. | |
| 1390 | Use function FIND-BEGIN to match it." | |
| 1eb6bf70 | 1391 | (let ((top-of-window (window-start)) |
| 9d23c925 GM |
1392 | (end-point (point)) |
| 1393 | (case-fold-search t) | |
| 1394 | matching | |
| 1395 | message) | |
| 5b04210c GM |
1396 | (when (save-excursion |
| 1397 | (beginning-of-line) | |
| 1398 | (skip-chars-forward " \t0-9") | |
| 1399 | (looking-at regex)) | |
| 1400 | (if (not (setq matching (funcall find-begin))) | |
| 1401 | (setq message (concat "No matching " keyword ".")) | |
| 1402 | (if (< matching top-of-window) | |
| 1403 | (save-excursion | |
| 1404 | (goto-char matching) | |
| 1405 | (beginning-of-line) | |
| 1406 | (setq message | |
| 1407 | (concat "Matches " | |
| 1408 | (buffer-substring (point) | |
| 1409 | (line-end-position))))))) | |
| 1410 | (if message | |
| 1411 | (message "%s" message) | |
| 1412 | (goto-char matching) | |
| 7533f3b5 | 1413 | (sit-for blink-matching-delay) |
| 5b04210c | 1414 | (goto-char end-point))))) |
| 7dae727d DL |
1415 | |
| 1416 | (defun fortran-blink-matching-if () | |
| 1417 | "From an ENDIF or ELSE statement, blink the matching IF statement." | |
| 1418 | (fortran-blink-match "e\\(nd[ \t]*if\\|lse\\([ \t]*if\\)?\\)\\b" | |
| 9d23c925 | 1419 | "if" #'fortran-beginning-if)) |
| 947388af RS |
1420 | |
| 1421 | (defun fortran-blink-matching-do () | |
| 45cf60ae | 1422 | "From an ENDDO statement, blink the matching DO or DO WHILE statement." |
| 7dae727d | 1423 | (fortran-blink-match "end[ \t]*do\\b" "do" #'fortran-beginning-do)) |
| c5af0a18 RS |
1424 | |
| 1425 | (defun fortran-mark-do () | |
| 60db3594 | 1426 | "Put mark at end of Fortran DO [WHILE]-ENDDO construct, point at beginning. |
| c5af0a18 RS |
1427 | The marks are pushed." |
| 1428 | (interactive) | |
| 1429 | (let (enddo-point do-point) | |
| 1430 | (if (setq enddo-point (fortran-end-do)) | |
| 1431 | (if (not (setq do-point (fortran-beginning-do))) | |
| 1432 | (message "No matching do.") | |
| c5af0a18 RS |
1433 | (goto-char enddo-point) |
| 1434 | (push-mark) | |
| 1435 | (goto-char do-point))))) | |
| 1436 | ||
| 1437 | (defun fortran-end-do () | |
| 45cf60ae DL |
1438 | "Search forward for first unmatched ENDDO. |
| 1439 | Return point or nil." | |
| 1eb6bf70 DL |
1440 | (let ((case-fold-search t)) |
| 1441 | (if (save-excursion (beginning-of-line) | |
| 9d23c925 GM |
1442 | (skip-chars-forward " \t0-9") |
| 1443 | (looking-at "end[ \t]*do\\b")) | |
| 1444 | ;; Sitting on one. | |
| 1445 | (match-beginning 0) | |
| 1eb6bf70 DL |
1446 | ;; Search for one. |
| 1447 | (save-excursion | |
| 9d23c925 GM |
1448 | (let ((count 1)) |
| 1449 | (while (and (not (zerop count)) | |
| 1450 | (not (eq (fortran-next-statement) 'last-statement)) | |
| 1451 | ;; Keep local to subprogram. | |
| 1452 | (not (and (looking-at fortran-end-prog-re) | |
| 1453 | (fortran-check-end-prog-re)))) | |
| 1454 | (skip-chars-forward " \t0-9") | |
| 1455 | (cond ((looking-at "end[ \t]*do\\b") | |
| 1456 | (setq count (1- count))) | |
| 1457 | ((looking-at | |
| 1458 | "\\(\\(\\sw\\|\\s_\\)+:[ \t]*\\)?do[ \t]+[^0-9]") | |
| 1459 | (setq count (1+ count))))) | |
| 1460 | (and (zerop count) | |
| 1461 | ;; All pairs accounted for. | |
| 1462 | (point))))))) | |
| c5af0a18 RS |
1463 | |
| 1464 | (defun fortran-beginning-do () | |
| 45cf60ae | 1465 | "Search backwards for first unmatched DO [WHILE]. |
| 845d331e GM |
1466 | Return point or nil. Ignores labelled DO loops (ie DO 10 ... 10 CONTINUE)." |
| 1467 | (let ((case-fold-search t) | |
| 1468 | (dostart-re "\\(\\(\\sw\\|\\s_\\)+:[ \t]*\\)?do[ \t]+[^0-9]")) | |
| 7dae727d | 1469 | (if (save-excursion |
| 9d23c925 GM |
1470 | (beginning-of-line) |
| 1471 | (skip-chars-forward " \t0-9") | |
| 1472 | (looking-at dostart-re)) | |
| 1473 | ;; Sitting on one. | |
| 1474 | (match-beginning 0) | |
| 1eb6bf70 DL |
1475 | ;; Search for one. |
| 1476 | (save-excursion | |
| 9d23c925 GM |
1477 | (let ((count 1)) |
| 1478 | (while (and (not (zerop count)) | |
| 1479 | (not (eq (fortran-previous-statement) 'first-statement)) | |
| 1480 | ;; Keep local to subprogram. | |
| 1481 | (not (and (looking-at fortran-end-prog-re) | |
| 1482 | (fortran-check-end-prog-re)))) | |
| 1483 | (skip-chars-forward " \t0-9") | |
| 1484 | (cond ((looking-at dostart-re) | |
| 1485 | (setq count (1- count))) | |
| 845d331e | 1486 | ;; Note labelled loop ends not considered. |
| 9d23c925 GM |
1487 | ((looking-at "end[ \t]*do\\b") |
| 1488 | (setq count (1+ count))))) | |
| 1489 | (and (zerop count) | |
| 1490 | ;; All pairs accounted for. | |
| 1491 | (point))))))) | |
| c5af0a18 RS |
1492 | |
| 1493 | (defun fortran-mark-if () | |
| 1494 | "Put mark at end of Fortran IF-ENDIF construct, point at beginning. | |
| 1495 | The marks are pushed." | |
| 1496 | (interactive) | |
| 1497 | (let (endif-point if-point) | |
| 1498 | (if (setq endif-point (fortran-end-if)) | |
| 1499 | (if (not (setq if-point (fortran-beginning-if))) | |
| 1500 | (message "No matching if.") | |
| 1501 | ;; Set mark, move point. | |
| 1502 | (goto-char endif-point) | |
| 1503 | (push-mark) | |
| 1504 | (goto-char if-point))))) | |
| 1505 | ||
| 1506 | (defun fortran-end-if () | |
| 45cf60ae DL |
1507 | "Search forwards for first unmatched ENDIF. |
| 1508 | Return point or nil." | |
| 1eb6bf70 DL |
1509 | (let ((case-fold-search t)) |
| 1510 | (if (save-excursion (beginning-of-line) | |
| 9d23c925 GM |
1511 | (skip-chars-forward " \t0-9") |
| 1512 | (looking-at "end[ \t]*if\\b")) | |
| 1513 | ;; Sitting on one. | |
| 1514 | (match-beginning 0) | |
| 1eb6bf70 DL |
1515 | ;; Search for one. The point has been already been moved to first |
| 1516 | ;; letter on line but this should not cause troubles. | |
| 1517 | (save-excursion | |
| 9d23c925 GM |
1518 | (let ((count 1)) |
| 1519 | (while (and (not (zerop count)) | |
| 1520 | (not (eq (fortran-next-statement) 'last-statement)) | |
| 1521 | ;; Keep local to subprogram. | |
| 1522 | (not (and (looking-at fortran-end-prog-re) | |
| 1523 | (fortran-check-end-prog-re)))) | |
| 1524 | (skip-chars-forward " \t0-9") | |
| 1525 | (cond ((looking-at "end[ \t]*if\\b") | |
| 1526 | (setq count (1- count))) | |
| 1527 | ((looking-at fortran-if-start-re) | |
| 1528 | (save-excursion | |
| 1529 | (if (or | |
| 1530 | (looking-at ".*)[ \t]*then\\b[ \t]*[^ \t(=a-z0-9]") | |
| 1531 | (let (then-test) ; multi-line if-then | |
| 1532 | (while | |
| 1533 | (and | |
| 1534 | (zerop (forward-line 1)) | |
| 1535 | ;; Search forward for then. | |
| 1536 | (looking-at " \\{5\\}[^ 0\n]\\|\t[1-9]") | |
| 1537 | (not | |
| 1538 | (setq then-test | |
| 1539 | (looking-at | |
| 1540 | ".*then\\b[ \t]*[^ \t(=a-z0-9]"))))) | |
| 1541 | then-test)) | |
| 1542 | (setq count (1+ count))))))) | |
| 1543 | (and (zerop count) | |
| 1544 | ;; All pairs accounted for. | |
| 1545 | (point))))))) | |
| c5af0a18 RS |
1546 | |
| 1547 | (defun fortran-beginning-if () | |
| 45cf60ae DL |
1548 | "Search backwards for first unmatched IF-THEN. |
| 1549 | Return point or nil." | |
| 1eb6bf70 DL |
1550 | (let ((case-fold-search t)) |
| 1551 | (if (save-excursion | |
| 9d23c925 GM |
1552 | ;; May be sitting on multi-line if-then statement, first |
| 1553 | ;; move to beginning of current statement. Note: | |
| 1554 | ;; `fortran-previous-statement' moves to previous statement | |
| 1555 | ;; *unless* current statement is first one. Only move | |
| 1556 | ;; forward if not first-statement. | |
| 1557 | (if (not (eq (fortran-previous-statement) 'first-statement)) | |
| 1558 | (fortran-next-statement)) | |
| 1559 | (skip-chars-forward " \t0-9") | |
| 1560 | (and | |
| 1561 | (looking-at fortran-if-start-re) | |
| 1562 | (save-match-data | |
| 1563 | (or (looking-at ".*)[ \t]*then\\b[ \t]*[^ \t(=a-z0-9]") | |
| 1564 | ;; Multi-line if-then. | |
| 1565 | (let (then-test) | |
| 1566 | (while | |
| 5b04210c | 1567 | (and (zerop (forward-line 1)) |
| 9d23c925 GM |
1568 | ;; Search forward for then. |
| 1569 | (looking-at " \\{5\\}[^ 0\n]\\|\t[1-9]") | |
| 1570 | (not | |
| 1571 | (setq then-test | |
| 1572 | (looking-at | |
| 1573 | ".*then\\b[ \t]*[^ \t(=a-z0-9]"))))) | |
| 1574 | then-test))))) | |
| 1575 | ;; Sitting on one. | |
| 1576 | (match-beginning 0) | |
| 1eb6bf70 DL |
1577 | ;; Search for one. |
| 1578 | (save-excursion | |
| 9d23c925 GM |
1579 | (let ((count 1)) |
| 1580 | (while (and (not (zerop count)) | |
| 1581 | (not (eq (fortran-previous-statement) 'first-statement)) | |
| 1582 | ;; Keep local to subprogram. | |
| 1583 | (not (and (looking-at fortran-end-prog-re) | |
| 1584 | (fortran-check-end-prog-re)))) | |
| 1585 | (skip-chars-forward " \t0-9") | |
| 1586 | (cond ((looking-at fortran-if-start-re) | |
| 1587 | (save-excursion | |
| 1588 | (if (or | |
| 1589 | (looking-at ".*)[ \t]*then\\b[ \t]*[^ \t(=a-z0-9]") | |
| 1590 | (let (then-test) ; multi-line if-then | |
| 1591 | (while | |
| 1592 | (and | |
| 1593 | (zerop (forward-line 1)) | |
| 1594 | ;; Search forward for then. | |
| 1595 | (looking-at " \\{5\\}[^ 0\n]\\|\t[1-9]") | |
| 1596 | (not | |
| 1597 | (setq then-test | |
| 1598 | (looking-at | |
| 1599 | (concat ".*then\\b[ \t]*" | |
| 1600 | "[^ \t(=a-z0-9]")))))) | |
| 1601 | then-test)) | |
| 1602 | (setq count (1- count))))) | |
| 1603 | ((looking-at "end[ \t]*if\\b") | |
| 1604 | (setq count (1+ count))))) | |
| 1605 | (and (zerop count) | |
| 1606 | ;; All pairs accounted for. | |
| 1607 | (point))))))) | |
| 5b04210c | 1608 | |
| 3dd63760 JB |
1609 | \f |
| 1610 | (defun fortran-indent-line () | |
| 7977773d | 1611 | "Indent current Fortran line based on its contents and on previous lines." |
| 5b04210c | 1612 | (interactive "*") |
| 1eb6bf70 | 1613 | (let ((cfi (fortran-calculate-indent))) |
| 3dd63760 JB |
1614 | (save-excursion |
| 1615 | (beginning-of-line) | |
| 1616 | (if (or (not (= cfi (fortran-current-line-indentation))) | |
| 9d23c925 GM |
1617 | (and (re-search-forward "^[ \t]*[0-9]+" (+ (point) 4) t) |
| 1618 | (not (fortran-line-number-indented-correctly-p)))) | |
| 1619 | (fortran-indent-to-column cfi) | |
| 1620 | (beginning-of-line) | |
| 1621 | (if (fortran-find-comment-start-skip) | |
| 1622 | (fortran-indent-comment)))) | |
| 3dd63760 JB |
1623 | ;; Never leave point in left margin. |
| 1624 | (if (< (current-column) cfi) | |
| 9d23c925 | 1625 | (move-to-column cfi)) |
| 5b04210c GM |
1626 | (and auto-fill-function |
| 1627 | (> (save-excursion (end-of-line) (current-column)) | |
| 1628 | fill-column) | |
| 1629 | (save-excursion | |
| 1630 | (end-of-line) | |
| 1631 | (fortran-fill))) | |
| 1632 | (when fortran-blink-matching-if | |
| 1633 | (fortran-blink-matching-if) | |
| 1634 | (fortran-blink-matching-do)))) | |
| 3dd63760 | 1635 | |
| 315aa1de | 1636 | (defun fortran-auto-fill () |
| 5b04210c | 1637 | "Function to use for `normal-auto-fill-function' in Fortran mode." |
| 315aa1de DL |
1638 | (if (> (current-column) (current-fill-column)) |
| 1639 | (let ((cfi (fortran-calculate-indent))) | |
| 9d23c925 GM |
1640 | (save-excursion |
| 1641 | (beginning-of-line) | |
| 1642 | (if (or (not (= cfi (fortran-current-line-indentation))) | |
| 1643 | (and (re-search-forward "^[ \t]*[0-9]+" | |
| 1644 | (+ (point) 4) t) | |
| 1645 | (not (fortran-line-number-indented-correctly-p)))) | |
| 1646 | (fortran-indent-to-column cfi) | |
| 1647 | (beginning-of-line) | |
| 1648 | (if (fortran-find-comment-start-skip) | |
| 1649 | (fortran-indent-comment)))) | |
| 1650 | (fortran-fill) | |
| 1651 | ;; Never leave point in left margin. | |
| 1652 | (if (< (current-column) cfi) | |
| 1653 | (move-to-column cfi))))) | |
| 315aa1de | 1654 | |
| 5aca2648 DL |
1655 | ;; Historically this was a separate function which advertised itself |
| 1656 | ;; as reindenting but only did so where `most likely to be necessary'. | |
| 1657 | (defalias 'fortran-indent-new-line 'reindent-then-newline-and-indent) | |
| b8cbdf43 | 1658 | |
| 3dd63760 | 1659 | (defun fortran-indent-subprogram () |
| 5b04210c GM |
1660 | "Properly indent the Fortran subprogram containing point." |
| 1661 | (interactive "*") | |
| 3dd63760 | 1662 | (save-excursion |
| 7a7db8e5 | 1663 | (mark-defun) |
| c4c42b2e DL |
1664 | (message "Indenting subprogram...") |
| 1665 | (indent-region (point) (mark) nil)) | |
| 3dd63760 JB |
1666 | (message "Indenting subprogram...done.")) |
| 1667 | ||
| 1eb6bf70 | 1668 | (defun fortran-calculate-indent () |
| b8cbdf43 | 1669 | "Calculates the Fortran indent column based on previous lines." |
| 3dd63760 | 1670 | (let (icol first-statement (case-fold-search t) |
| 9d23c925 GM |
1671 | (fortran-minimum-statement-indent |
| 1672 | (if indent-tabs-mode | |
| 1673 | fortran-minimum-statement-indent-tab | |
| 1674 | fortran-minimum-statement-indent-fixed))) | |
| 3dd63760 JB |
1675 | (save-excursion |
| 1676 | (setq first-statement (fortran-previous-statement)) | |
| 1677 | (if first-statement | |
| 9d23c925 | 1678 | (setq icol fortran-minimum-statement-indent) |
| 98110b1f GM |
1679 | (if (= (point) (point-min)) |
| 1680 | (setq icol fortran-minimum-statement-indent) | |
| 1681 | (setq icol (fortran-current-line-indentation))) | |
| 1682 | (skip-chars-forward " \t0-9") | |
| 1683 | (cond ((looking-at "\\(\\(\\sw\\|\\s_\\)+:[ \t]*\\)?if[ \t]*(") | |
| 1684 | (if (or (looking-at ".*)[ \t]*then\\b[ \t]*[^ \t_$(=a-z0-9]") | |
| 9d23c925 | 1685 | (let (then-test) ; multi-line if-then |
| 5b04210c | 1686 | (while (and (zerop (forward-line 1)) |
| 0a39a75c | 1687 | ;; Search forward for then. |
| 98110b1f GM |
1688 | (looking-at " \\{5\\}[^ 0\n]\\|\t[1-9]") |
| 1689 | (not (setq then-test | |
| 1690 | (looking-at | |
| 1691 | ".*then\\b[ \t]\ | |
| b8cbdf43 | 1692 | *[^ \t_$(=a-z0-9]"))))) |
| 98110b1f GM |
1693 | then-test)) |
| 1694 | (setq icol (+ icol fortran-if-indent)))) | |
| 1695 | ((looking-at "else\\(if\\)?\\b") | |
| 1696 | (setq icol (+ icol fortran-if-indent))) | |
| 1697 | ((looking-at "select[ \t]*case[ \t](.*)") | |
| 1698 | (setq icol (+ icol fortran-if-indent))) | |
| 1699 | ((looking-at "case[ \t]*(.*)") | |
| 1700 | (setq icol (+ icol fortran-if-indent))) | |
| 1701 | ((looking-at "case[ \t]*default\\b") | |
| 1702 | (setq icol (+ icol fortran-if-indent))) | |
| 1703 | ((looking-at "\\(otherwise\\|else[ \t]*where\\)\\b") | |
| 1704 | (setq icol (+ icol fortran-if-indent))) | |
| 1705 | ((looking-at "where[ \t]*(.*)[ \t]*\n") | |
| 1706 | (setq icol (+ icol fortran-if-indent))) | |
| 1707 | ((looking-at "do\\b") | |
| 1708 | (setq icol (+ icol fortran-do-indent))) | |
| 1709 | ((looking-at | |
| 1710 | "\\(structure\\|union\\|map\\|interface\\)\ | |
| 7dae727d | 1711 | \\b[ \t]*[^ \t=(a-z]") |
| 98110b1f GM |
1712 | (setq icol (+ icol fortran-structure-indent))) |
| 1713 | ((and (looking-at fortran-end-prog-re1) | |
| 1714 | (fortran-check-end-prog-re)) | |
| 0a39a75c | 1715 | ;; Previous END resets indent to minimum. |
| dd08226a GM |
1716 | (setq icol fortran-minimum-statement-indent)) |
| 1717 | ;; Previous statement was a numbered DO loop without a | |
| 1718 | ;; closing CONTINUE or END DO, so we indented the | |
| 1719 | ;; terminator like the loop body. | |
| 1720 | ((and fortran-check-all-num-for-matching-do | |
| 1721 | (not (looking-at "\\(continue\\|end[ \t]*do\\)\\>")) | |
| 1722 | (progn | |
| 1723 | (beginning-of-line) | |
| 1724 | (and (looking-at "[ \t]*[0-9]+") | |
| 1725 | (fortran-check-for-matching-do)))) | |
| 1726 | (setq icol (- icol fortran-do-indent)))))) | |
| 3dd63760 JB |
1727 | (save-excursion |
| 1728 | (beginning-of-line) | |
| 1729 | (cond ((looking-at "[ \t]*$")) | |
| 5a73972b | 1730 | ;; Check for directive before comment, so as not to indent. |
| 9d23c925 GM |
1731 | ((looking-at fortran-directive-re) |
| 1732 | (setq fortran-minimum-statement-indent 0 icol 0)) | |
| 1733 | ((looking-at fortran-comment-line-start-skip) | |
| 1734 | (cond ((eq fortran-comment-indent-style 'relative) | |
| 1735 | (setq icol (+ icol fortran-comment-line-extra-indent))) | |
| 1736 | ((eq fortran-comment-indent-style 'fixed) | |
| 1737 | (setq icol (+ fortran-minimum-statement-indent | |
| 1738 | fortran-comment-line-extra-indent)))) | |
| 1739 | (setq fortran-minimum-statement-indent 0)) | |
| 1740 | ((or (looking-at (concat "[ \t]*" | |
| 1741 | (regexp-quote | |
| 1742 | fortran-continuation-string))) | |
| 1743 | (looking-at " \\{5\\}[^ 0\n]\\|\t[1-9]")) | |
| 98110b1f GM |
1744 | (skip-chars-forward " \t") |
| 1745 | ;; Do not introduce extra whitespace into a broken string. | |
| 1746 | (setq icol | |
| 1747 | (if (fortran-is-in-string-p (point)) | |
| 1748 | 6 | |
| 1749 | (+ icol fortran-continuation-indent)))) | |
| 9d23c925 | 1750 | (first-statement) |
| dd08226a GM |
1751 | ;; The terminating statement is actually part of the |
| 1752 | ;; loop body, so unless it is a CONTINUE or END DO, we | |
| 1753 | ;; indent it like the loop body (see above). | |
| 9d23c925 | 1754 | ((and fortran-check-all-num-for-matching-do |
| dd08226a GM |
1755 | (looking-at "[ \t]*[0-9]+[ \t]*\ |
| 1756 | \\(continue\\|end[ \t]*do\\)\\>") | |
| 9d23c925 GM |
1757 | (fortran-check-for-matching-do)) |
| 1758 | (setq icol (- icol fortran-do-indent))) | |
| 1759 | (t | |
| 1760 | (skip-chars-forward " \t0-9") | |
| 1761 | (cond ((looking-at "end[ \t]*\\(if\\|select\\|where\\)\\b") | |
| 1762 | (setq icol (- icol fortran-if-indent))) | |
| 1763 | ((looking-at "else\\(if\\)?\\b") | |
| 1764 | (setq icol (- icol fortran-if-indent))) | |
| 1eb6bf70 | 1765 | ((looking-at "case[ \t]*\\((.*)\\|default\\>\\)") |
| 9d23c925 GM |
1766 | (setq icol (- icol fortran-if-indent))) |
| 1767 | ((looking-at "\\(otherwise\\|else[ \t]*where\\)\\b") | |
| 1768 | (setq icol (- icol fortran-if-indent))) | |
| 1769 | ((and (looking-at "continue\\b") | |
| 1770 | (fortran-check-for-matching-do)) | |
| 1771 | (setq icol (- icol fortran-do-indent))) | |
| 1772 | ((looking-at "end[ \t]*do\\b") | |
| 1773 | (setq icol (- icol fortran-do-indent))) | |
| 1774 | ((looking-at "end[ \t]*\ | |
| 5a8d870b | 1775 | \\(structure\\|union\\|map\\|interface\\)\\b[ \t]*[^ \t=(a-z]") |
| 9d23c925 GM |
1776 | (setq icol (- icol fortran-structure-indent))) |
| 1777 | ((and (looking-at fortran-end-prog-re1) | |
| 1778 | (fortran-check-end-prog-re) | |
| 1779 | (not (= icol fortran-minimum-statement-indent))) | |
| 1780 | (message "Warning: `end' not in column %d. Probably\ | |
| 3dd63760 JB |
1781 | an unclosed block." fortran-minimum-statement-indent)))))) |
| 1782 | (max fortran-minimum-statement-indent icol))) | |
| 5b04210c | 1783 | |
| 3dd63760 JB |
1784 | \f |
| 1785 | (defun fortran-current-line-indentation () | |
| 1786 | "Indentation of current line, ignoring Fortran line number or continuation. | |
| 1787 | This is the column position of the first non-whitespace character | |
| 1788 | aside from the line number and/or column 5/8 line-continuation character. | |
| 1789 | For comment lines, returns indentation of the first | |
| 1790 | non-indentation text within the comment." | |
| 1791 | (save-excursion | |
| 1792 | (beginning-of-line) | |
| 7dae727d | 1793 | (cond ((looking-at fortran-comment-line-start-skip) |
| 9d23c925 GM |
1794 | (goto-char (match-end 0)) |
| 1795 | (skip-chars-forward | |
| 1796 | (if (stringp fortran-comment-indent-char) | |
| 1797 | fortran-comment-indent-char | |
| 1798 | (char-to-string fortran-comment-indent-char)))) | |
| 1799 | ((or (looking-at " \\{5\\}[^ 0\n]\\|\t[1-9]")) | |
| 1800 | (goto-char (match-end 0))) | |
| 1801 | (t | |
| 1802 | ;; Move past line number. | |
| 1803 | (skip-chars-forward "[ \t0-9]"))) | |
| 3dd63760 JB |
1804 | ;; Move past whitespace. |
| 1805 | (skip-chars-forward " \t") | |
| 1806 | (current-column))) | |
| 1807 | ||
| 1808 | (defun fortran-indent-to-column (col) | |
| 5b04210c | 1809 | "Indent current line to column COL. |
| 3dd63760 JB |
1810 | notes: 1) A non-zero/non-blank character in column 5 indicates a continuation |
| 1811 | line, and this continuation character is retained on indentation; | |
| b8cbdf43 RS |
1812 | 2) If `fortran-continuation-string' is the first non-whitespace |
| 1813 | character, this is a continuation line; | |
| 3dd63760 JB |
1814 | 3) A non-continuation line which has a number as the first |
| 1815 | non-whitespace character is a numbered line. | |
| b8cbdf43 | 1816 | 4) A TAB followed by a digit indicates a continuation line." |
| 3dd63760 JB |
1817 | (save-excursion |
| 1818 | (beginning-of-line) | |
| 7dae727d | 1819 | (if (looking-at fortran-comment-line-start-skip) |
| 9d23c925 GM |
1820 | (if fortran-comment-indent-style |
| 1821 | (let* ((char (if (stringp fortran-comment-indent-char) | |
| 1822 | (aref fortran-comment-indent-char 0) | |
| 1823 | fortran-comment-indent-char)) | |
| 1824 | (chars (string ?\s ?\t char))) | |
| 1825 | (goto-char (match-end 0)) | |
| 1826 | (skip-chars-backward chars) | |
| 1827 | (delete-region (point) (progn (skip-chars-forward chars) | |
| 1828 | (point))) | |
| 1829 | (insert-char char (- col (current-column))))) | |
| 3dd63760 | 1830 | (if (looking-at "\t[1-9]") |
| 9d23c925 GM |
1831 | (if indent-tabs-mode |
| 1832 | (goto-char (match-end 0)) | |
| 1833 | (delete-char 2) | |
| 1834 | (insert-char ?\s 5) | |
| 1835 | (insert fortran-continuation-string)) | |
| 1836 | (if (looking-at " \\{5\\}[^ 0\n]") | |
| 1837 | (if indent-tabs-mode | |
| 1838 | (progn (delete-char 6) | |
| 1839 | (insert ?\t (fortran-numerical-continuation-char) 1)) | |
| 1840 | (forward-char 6)) | |
| 1841 | (delete-horizontal-space) | |
| 1842 | ;; Put line number in columns 0-4, or | |
| 0a39a75c | 1843 | ;; continuation character in column 5. |
| 9d23c925 GM |
1844 | (cond ((eobp)) |
| 1845 | ((looking-at (regexp-quote fortran-continuation-string)) | |
| 1846 | (if indent-tabs-mode | |
| 1847 | (progn | |
| 1848 | (indent-to | |
| 1849 | (if indent-tabs-mode | |
| 1850 | fortran-minimum-statement-indent-tab | |
| 1851 | fortran-minimum-statement-indent-fixed)) | |
| 1852 | (delete-char 1) | |
| 1853 | (insert-char (fortran-numerical-continuation-char) 1)) | |
| 1854 | (indent-to 5) | |
| 1855 | (forward-char 1))) | |
| 1856 | ((looking-at "[0-9]+") | |
| 1857 | (let ((extra-space (- 5 (- (match-end 0) (point))))) | |
| 1858 | (if (< extra-space 0) | |
| 1859 | (message "Warning: line number exceeds 5-digit limit.") | |
| 1860 | (indent-to (min fortran-line-number-indent extra-space)))) | |
| 1861 | (skip-chars-forward "0-9"))))) | |
| 3dd63760 JB |
1862 | ;; Point is now after any continuation character or line number. |
| 1863 | ;; Put body of statement where specified. | |
| 1864 | (delete-horizontal-space) | |
| 1865 | (indent-to col) | |
| 1866 | ;; Indent any comment following code on the same line. | |
| 5b04210c GM |
1867 | (when (fortran-find-comment-start-skip) |
| 1868 | (goto-char (match-beginning 0)) | |
| 1869 | (unless (= (current-column) (fortran-comment-indent)) | |
| 1870 | (delete-horizontal-space) | |
| 1871 | (indent-to (fortran-comment-indent))))))) | |
| 3dd63760 JB |
1872 | |
| 1873 | (defun fortran-line-number-indented-correctly-p () | |
| 1874 | "Return t if current line's line number is correctly indented. | |
| 1875 | Do not call if there is no line number." | |
| 1876 | (save-excursion | |
| 1877 | (beginning-of-line) | |
| 1878 | (skip-chars-forward " \t") | |
| 1879 | (and (<= (current-column) fortran-line-number-indent) | |
| 9d23c925 GM |
1880 | (or (= (current-column) fortran-line-number-indent) |
| 1881 | (progn (skip-chars-forward "0-9") | |
| 1882 | (= (current-column) 5)))))) | |
| 3dd63760 JB |
1883 | |
| 1884 | (defun fortran-check-for-matching-do () | |
| 7977773d DL |
1885 | "When called from a numbered statement, return t if matching DO is found. |
| 1886 | Otherwise return nil." | |
| 7dae727d | 1887 | (let ((case-fold-search t) |
| 9d23c925 | 1888 | charnum) |
| 3dd63760 JB |
1889 | (save-excursion |
| 1890 | (beginning-of-line) | |
| 5b04210c GM |
1891 | (when (looking-at "[ \t]*[0-9]+") |
| 1892 | (skip-chars-forward " \t") | |
| 9d23c925 | 1893 | (skip-chars-forward "0") ; skip past leading zeros |
| 5b04210c GM |
1894 | (setq charnum |
| 1895 | (buffer-substring (point) (progn | |
| 1896 | (skip-chars-forward "0-9") | |
| 1897 | (point)))) | |
| 1898 | (beginning-of-line) | |
| 1899 | (save-restriction | |
| 1900 | (save-excursion | |
| 1901 | (narrow-to-defun) | |
| 1902 | (and (re-search-backward | |
| 1903 | (concat | |
| 1904 | "\\(^[ \t0-9]*do[ \t]*0*" | |
| 1905 | charnum "\\b\\)\\|" "\\(^[ \t]*0*" | |
| 1906 | charnum "\\b\\)") | |
| 1907 | nil t) | |
| 1908 | (looking-at | |
| 1909 | (concat "^[ \t0-9]*do[ \t]*0*" | |
| 1910 | charnum))))))))) | |
| 3dd63760 | 1911 | |
| ff451e17 | 1912 | (defun fortran-find-comment-start-skip (&optional all) |
| b8cbdf43 | 1913 | "Move to past `comment-start-skip' found on current line. |
| ff451e17 SM |
1914 | Return non-nil if `comment-start-skip' found, nil if not. |
| 1915 | If ALL is nil, only match comments that start in column > 0." | |
| ff451e17 SM |
1916 | ;; Hopefully at some point we can just use the line below! -stef |
| 1917 | ;; (comment-search-forward (line-end-position) t)) | |
| 1918 | (when (or all comment-start-skip) | |
| 1919 | (let ((pos (point)) | |
| 9d23c925 GM |
1920 | (css (if comment-start-skip |
| 1921 | (concat fortran-comment-line-start-skip | |
| 1922 | "\\|" comment-start-skip) | |
| 1923 | fortran-comment-line-start-skip))) | |
| ff451e17 | 1924 | (when (re-search-forward css (line-end-position) t) |
| 9d23c925 GM |
1925 | (if (and (or all (> (match-beginning 0) (line-beginning-position))) |
| 1926 | (or (save-match-data | |
| 1927 | (not (fortran-is-in-string-p (match-beginning 0)))) | |
| 1928 | ;; Recurse for rest of line. | |
| 1929 | (fortran-find-comment-start-skip all))) | |
| 1930 | (point) | |
| 1931 | (goto-char pos) | |
| 1932 | nil))))) | |
| f022dd89 | 1933 | |
| 5b04210c | 1934 | ;; From: ralf@up3aud1.gwdg.de (Ralf Fassel) |
| 1eb6bf70 | 1935 | ;; Test if TAB format continuation lines work. |
| b56eb7c9 | 1936 | (defun fortran-is-in-string-p (where) |
| e7f767c2 | 1937 | "Return non-nil if WHERE (a buffer position) is inside a Fortran string." |
| b56eb7c9 RS |
1938 | (save-excursion |
| 1939 | (goto-char where) | |
| 1940 | (cond | |
| 9d23c925 GM |
1941 | ((bolp) nil) ; bol is never inside a string |
| 1942 | ((save-excursion ; comment lines too | |
| 1943 | (beginning-of-line) | |
| 1944 | (looking-at fortran-comment-line-start-skip)) nil) | |
| 0a39a75c | 1945 | (t (let ((parse-state '(0 nil nil nil nil nil 0)) |
| 9d23c925 GM |
1946 | (quoted-comment-start (if comment-start |
| 1947 | (regexp-quote comment-start))) | |
| 1948 | (not-done t) | |
| 1949 | parse-limit end-of-line) | |
| 1950 | ;; Move to start of current statement. | |
| 1951 | (fortran-next-statement) | |
| 1952 | (fortran-previous-statement) | |
| 1953 | ;; Now parse up to WHERE. | |
| 1954 | (while not-done | |
| 1955 | (if (or ;; Skip to next line if: | |
| 1956 | ;; - comment line? | |
| 1957 | (looking-at fortran-comment-line-start-skip) | |
| 1958 | ;; - at end of line? | |
| 1959 | (eolp) | |
| 1960 | ;; - not in a string and after comment-start? | |
| 1961 | (and (not (nth 3 parse-state)) | |
| 1962 | comment-start | |
| 1963 | (equal comment-start | |
| 1964 | (char-to-string (preceding-char))))) | |
| 1965 | (if (> (forward-line) 0) | |
| 1966 | (setq not-done nil)) | |
| 1967 | ;; else: | |
| 1968 | ;; If we are at beginning of code line, skip any | |
| 1969 | ;; whitespace, labels and tab continuation markers. | |
| 1970 | (if (bolp) (skip-chars-forward " \t0-9")) | |
| 1971 | ;; If we are in column <= 5 now, check for continuation char. | |
| 1972 | (cond ((= 5 (current-column)) (forward-char 1)) | |
| 1973 | ((and (< (current-column) 5) | |
| 1974 | (equal fortran-continuation-string | |
| 1975 | (char-to-string (following-char))) | |
| 1976 | (forward-char 1)))) | |
| 1977 | ;; Find out parse-limit from here. | |
| 1978 | (setq end-of-line (line-end-position)) | |
| 1979 | (setq parse-limit (min where end-of-line)) | |
| 1980 | ;; Parse max up to comment-start, if non-nil and in current line. | |
| 1981 | (if comment-start | |
| 1982 | (save-excursion | |
| 1983 | (if (re-search-forward quoted-comment-start end-of-line t) | |
| 1984 | (setq parse-limit (min (point) parse-limit))))) | |
| 1985 | ;; Now parse if still in limits. | |
| 1986 | (if (< (point) where) | |
| 1987 | (setq parse-state (parse-partial-sexp | |
| 1988 | (point) parse-limit nil nil parse-state)) | |
| 1989 | (setq not-done nil)))) | |
| 1990 | ;; Result. | |
| 1991 | (nth 3 parse-state)))))) | |
| b8cbdf43 | 1992 | |
| 7aabd23e DL |
1993 | ;; From old version. |
| 1994 | (defalias 'fortran-auto-fill-mode 'auto-fill-mode) | |
| b8cbdf43 | 1995 | |
| 4254fe58 | 1996 | (defun fortran-fill () |
| 5b04210c | 1997 | "Fill the current line at an appropriate point(s)." |
| 315aa1de | 1998 | (let* ((auto-fill-function #'fortran-auto-fill) |
| 9d23c925 GM |
1999 | (opoint (point)) |
| 2000 | (bol (line-beginning-position)) | |
| 2001 | (eol (line-end-position)) | |
| 2002 | (bos (min eol (+ bol (fortran-current-line-indentation)))) | |
| 337c50a5 GM |
2003 | ;; If in a string at fill-column, break it either before the |
| 2004 | ;; initial quote, or at fill-col (if string is too long). | |
| 9d23c925 GM |
2005 | (quote |
| 2006 | (save-excursion | |
| 2007 | (goto-char bol) | |
| 2008 | ;; OK to break quotes on comment lines. | |
| 2009 | (unless (looking-at fortran-comment-line-start-skip) | |
| 98110b1f | 2010 | (let (fcpoint start) |
| 337c50a5 GM |
2011 | (move-to-column fill-column) |
| 2012 | (when (fortran-is-in-string-p (setq fcpoint (point))) | |
| 2013 | (save-excursion | |
| 2014 | (re-search-backward "\\S\"\\s\"\\S\"?" bol t) | |
| 2015 | (setq start | |
| 2016 | (if fortran-break-before-delimiters | |
| 2017 | (point) | |
| 2018 | (1+ (point))))) | |
| 2019 | (if (re-search-forward "\\S\"\\s\"\\S\"" eol t) | |
| 2020 | (backward-char 2)) | |
| 8cb8832f GM |
2021 | ;; If the current string is longer than (fill-column |
| 2022 | ;; - 6) chars, break it at the fill column (else | |
| 2023 | ;; infinite loop). | |
| 337c50a5 GM |
2024 | (if (> (- (point) start) |
| 2025 | (- fill-column 6 fortran-continuation-indent)) | |
| 2026 | fcpoint | |
| 2027 | start)))))) | |
| 9d23c925 GM |
2028 | ;; Decide where to split the line. If a position for a quoted |
| 2029 | ;; string was found above then use that, else break the line | |
| 2030 | ;; before/after the last delimiter. | |
| 2031 | (fill-point | |
| 2032 | (or quote | |
| 2033 | (save-excursion | |
| 337c50a5 GM |
2034 | ;; If f-b-b-d is t, have an extra column to play with, |
| 2035 | ;; since delimiter gets shifted to new line. | |
| 2036 | (move-to-column (if fortran-break-before-delimiters | |
| 2037 | (1+ fill-column) | |
| 2038 | fill-column)) | |
| 2039 | (let ((repeat t)) | |
| 2040 | (while repeat | |
| 2041 | (setq repeat nil) | |
| 2042 | ;; Adapted from f90-find-breakpoint. | |
| 8aa7b879 | 2043 | (re-search-backward fortran-break-delimiters-re bol) |
| 337c50a5 GM |
2044 | (if (not fortran-break-before-delimiters) |
| 2045 | (if (looking-at fortran-no-break-re) | |
| 2046 | ;; Deal with cases such as "**" split over | |
| 2047 | ;; fill-col. Simpler alternative would be | |
| 2048 | ;; to start from (1- fill-column) above. | |
| 2049 | (if (> (+ 2 (current-column)) fill-column) | |
| 2050 | (setq repeat t) | |
| 2051 | (forward-char 2)) | |
| 2052 | (forward-char 1)) | |
| 2053 | (backward-char) | |
| 2054 | (or (looking-at fortran-no-break-re) | |
| 2055 | (forward-char))))) | |
| 2056 | ;; Line indented beyond fill-column? | |
| 9d23c925 | 2057 | (when (<= (point) bos) |
| 98110b1f | 2058 | (move-to-column (1+ fill-column)) |
| 0a39a75c | 2059 | ;; What is this doing??? |
| 98110b1f GM |
2060 | (or (re-search-forward "[\t\n,'+-/*)=]" eol t) |
| 2061 | (goto-char bol))) | |
| 9d23c925 GM |
2062 | (if (bolp) |
| 2063 | (re-search-forward "[ \t]" opoint t)) | |
| 337c50a5 | 2064 | (point))))) |
| 0a39a75c | 2065 | ;; If we are in an in-line comment, don't break unless the |
| b8cbdf43 RS |
2066 | ;; line of code is longer than it should be. Otherwise |
| 2067 | ;; break the line at the column computed above. | |
| 2068 | ;; | |
| 0a39a75c GM |
2069 | ;; Need to use fortran-find-comment-start-skip to make sure that |
| 2070 | ;; quoted !'s don't prevent a break. | |
| ff451e17 | 2071 | (when (and (save-excursion |
| 9d23c925 GM |
2072 | (beginning-of-line) |
| 2073 | (if (not (fortran-find-comment-start-skip)) | |
| 0ab47edc | 2074 | t |
| 9d23c925 GM |
2075 | (goto-char (match-beginning 0)) |
| 2076 | (>= (point) fill-point))) | |
| 2077 | (save-excursion | |
| 2078 | (goto-char fill-point) | |
| 2079 | (not (bolp))) | |
| 2080 | (> (save-excursion | |
| 2081 | (goto-char opoint) | |
| 2082 | (current-column)) | |
| 2083 | (min (1+ fill-column) | |
| 2084 | (+ (fortran-calculate-indent) | |
| 2085 | fortran-continuation-indent)))) | |
| ff451e17 SM |
2086 | (goto-char fill-point) |
| 2087 | (fortran-break-line) | |
| 2088 | (end-of-line)))) | |
| 7dae727d | 2089 | |
| b8cbdf43 | 2090 | (defun fortran-break-line () |
| 5b04210c | 2091 | "Call `fortran-split-line'. Joins continuation lines first, then refills." |
| 5d724235 | 2092 | (let ((bol (line-beginning-position)) |
| 9d23c925 GM |
2093 | (comment-string |
| 2094 | (save-excursion | |
| 2095 | (if (fortran-find-comment-start-skip) | |
| 2096 | (delete-and-extract-region | |
| 2097 | (match-beginning 0) (line-end-position)))))) | |
| 0a39a75c | 2098 | ;; Forward line 1 really needs to go to next non white line. |
| 1eb6bf70 | 2099 | (if (save-excursion (forward-line) |
| 9d23c925 GM |
2100 | (looking-at " \\{5\\}[^ 0\n]\\|\t[1-9]")) |
| 2101 | (progn | |
| 2102 | (end-of-line) | |
| 2103 | (delete-region (point) (match-end 0)) | |
| 2104 | (delete-horizontal-space) | |
| 2105 | (fortran-fill)) | |
| b8cbdf43 RS |
2106 | (fortran-split-line)) |
| 2107 | (if comment-string | |
| 9d23c925 GM |
2108 | (save-excursion |
| 2109 | (goto-char bol) | |
| 2110 | (end-of-line) | |
| 2111 | (delete-horizontal-space) | |
| 2112 | (indent-to (fortran-comment-indent)) | |
| 2113 | (insert comment-string))))) | |
| b8cbdf43 | 2114 | |
| 23029d77 | 2115 | (defun fortran-analyze-file-format () |
| 7977773d | 2116 | "Return nil if fixed format is used, t if TAB formatting is used. |
| 5b04210c GM |
2117 | Use `fortran-tab-mode-default' if no non-comment statements are found |
| 2118 | before the end or in the first `fortran-analyze-depth' lines." | |
| 23029d77 JB |
2119 | (let ((i 0)) |
| 2120 | (save-excursion | |
| 2121 | (goto-char (point-min)) | |
| 23029d77 | 2122 | (while (not (or |
| 9d23c925 GM |
2123 | (eobp) |
| 2124 | (eq (char-after) ?\t) | |
| 2125 | (looking-at " \\{6\\}") | |
| 2126 | (> i fortran-analyze-depth))) | |
| 2127 | (forward-line) | |
| 2128 | (setq i (1+ i))) | |
| 23029d77 | 2129 | (cond |
| 7dae727d | 2130 | ((eq (char-after) ?\t) t) |
| 315aa1de | 2131 | ((looking-at " \\{6\\}") nil) |
| a7113309 | 2132 | (t fortran-tab-mode-default))))) |
| 23029d77 | 2133 | |
| 1eb6bf70 DL |
2134 | (defun fortran-fill-paragraph (&optional justify) |
| 2135 | "Fill surrounding comment block as paragraphs, else fill statement. | |
| 5b04210c GM |
2136 | Intended as the value of `fill-paragraph-function'. |
| 2137 | A comment block is filled by calling `fill-comment-paragraph' with | |
| 2138 | argument JUSTIFY, otherwise `fortran-fill-statement' is called. | |
| 2139 | Always returns non-nil (to prevent `fill-paragraph' being called)." | |
| 2140 | (interactive "*P") | |
| 2bcfe15e SM |
2141 | (or (fill-comment-paragraph justify) |
| 2142 | (fortran-fill-statement) | |
| 2143 | t)) | |
| 1eb6bf70 DL |
2144 | |
| 2145 | (defun fortran-fill-statement () | |
| 5b04210c GM |
2146 | "Fill a Fortran statement up to `fill-column'." |
| 2147 | (interactive "*") | |
| 315aa1de | 2148 | (let ((auto-fill-function #'fortran-auto-fill)) |
| 5b04210c GM |
2149 | (unless (save-excursion |
| 2150 | (beginning-of-line) | |
| 2151 | (or (looking-at "[ \t]*$") | |
| 2152 | (looking-at fortran-comment-line-start-skip) | |
| 2153 | (and comment-start-skip | |
| 2154 | (looking-at (concat "[ \t]*" comment-start-skip))))) | |
| 2155 | (save-excursion | |
| 2156 | ;; Find beginning of statement. | |
| 2157 | (fortran-next-statement) | |
| 2158 | (fortran-previous-statement) | |
| 2159 | ;; Re-indent initially. | |
| 2160 | (fortran-indent-line) | |
| 2161 | ;; Replace newline plus continuation field plus indentation with | |
| 2162 | ;; single space. | |
| 2163 | (while (progn | |
| 2164 | (forward-line) | |
| 2165 | (fortran-remove-continuation))) | |
| 2166 | (fortran-previous-statement))) | |
| e04196d3 | 2167 | (fortran-indent-line))) |
| 1eb6bf70 | 2168 | |
| cfe9d0b5 | 2169 | (defun fortran-strip-sequence-nos (&optional do-space) |
| 694cf05e GM |
2170 | "Delete all text in column `fortran-line-length' (default 72) and up. |
| 2171 | This is assumed to be sequence numbers. Normally also deletes | |
| 2172 | trailing whitespace after stripping such text. Supplying prefix | |
| 2173 | arg DO-SPACE prevents stripping the whitespace." | |
| 5b04210c | 2174 | (interactive "*p") |
| 3b4613a4 DL |
2175 | (save-excursion |
| 2176 | (goto-char (point-min)) | |
| 694cf05e GM |
2177 | (while (re-search-forward (format "^.\\{%d\\}\\(.*\\)" fortran-line-length) |
| 2178 | nil t) | |
| 3b4613a4 DL |
2179 | (replace-match "" nil nil nil 1) |
| 2180 | (unless do-space (delete-horizontal-space))))) | |
| 2181 | ||
| 4a948dbf | 2182 | ;; This code used to live in add-log.el, but this is a better place for it. |
| 68ca306c DL |
2183 | (defun fortran-current-defun () |
| 2184 | "Function to use for `add-log-current-defun-function' in Fortran mode." | |
| a245ece5 GM |
2185 | (save-excursion |
| 2186 | ;; We must be inside function body for this to work. | |
| 2187 | (fortran-beginning-of-subprogram) | |
| 4a948dbf | 2188 | (let ((case-fold-search t)) |
| 0a39a75c | 2189 | ;; Search for fortran subprogram start. |
| a245ece5 | 2190 | (if (re-search-forward |
| 4a948dbf | 2191 | fortran-start-prog-re |
| a245ece5 GM |
2192 | (save-excursion (fortran-end-of-subprogram) |
| 2193 | (point)) | |
| 2194 | t) | |
| 2195 | (or (match-string-no-properties 2) | |
| 2196 | (progn | |
| 0a39a75c | 2197 | ;; Move to EOL or before first left paren. |
| a245ece5 GM |
2198 | (if (re-search-forward "[(\n]" nil t) |
| 2199 | (progn (backward-char) | |
| 2200 | (skip-chars-backward " \t")) | |
| 2201 | (end-of-line)) | |
| 2202 | ;; Use the name preceding that. | |
| 2203 | (buffer-substring-no-properties (point) (progn (backward-sexp) | |
| 2204 | (point))))) | |
| 2205 | "main")))) | |
| 68ca306c | 2206 | |
| 49116ac0 JB |
2207 | (provide 'fortran) |
| 2208 | ||
| 1a06eabd | 2209 | ;;; fortran.el ends here |