HCoop / bpt / emacs.git / blame
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|---|---|---|
| e5167999 ER |
1 | ;;; fortran.el --- Fortran mode for GNU Emacs |
| 2 | ||
| 95df8112 | 3 | ;; Copyright (C) 1986, 1993-1995, 1997-2011 Free Software Foundation, Inc. |
| 9750e079 | 4 | |
| e5167999 | 5 | ;; Author: Michael D. Prange <prange@erl.mit.edu> |
| aff88519 | 6 | ;; Maintainer: Glenn Morris <rgm@gnu.org> |
| 5b04210c | 7 | ;; Keywords: fortran, languages |
| 1a06eabd | 8 | |
| e5167999 ER |
9 | ;; This file is part of GNU Emacs. |
| 10 | ||
| b1fc2b50 | 11 | ;; GNU Emacs is free software: you can redistribute it and/or modify |
| e5167999 | 12 | ;; it under the terms of the GNU General Public License as published by |
| b1fc2b50 GM |
13 | ;; the Free Software Foundation, either version 3 of the License, or |
| 14 | ;; (at your option) any later version. | |
| e5167999 ER |
15 | |
| 16 | ;; GNU Emacs is distributed in the hope that it will be useful, | |
| 17 | ;; but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 18 | ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 19 | ;; GNU General Public License for more details. | |
| 20 | ||
| 21 | ;; You should have received a copy of the GNU General Public License | |
| b1fc2b50 | 22 | ;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. |
| e5167999 ER |
23 | |
| 24 | ;;; Commentary: | |
| 25 | ||
| 7977773d DL |
26 | ;; This mode is documented in the Emacs manual. |
| 27 | ;; | |
| 28 | ;; Note that it is for editing Fortran77 or Fortran90 fixed source | |
| 45cf60ae | 29 | ;; form. For editing Fortran 90 free format source, use `f90-mode' |
| b2523604 DL |
30 | ;; (f90.el). It is meant to support the GNU Fortran language |
| 31 | ;; implemented by g77 (its extensions to Fortran77 and | |
| 91af3942 | 32 | ;; interpretations, e.g. of backslash in strings). |
| 7977773d DL |
33 | |
| 34 | ;;; History: | |
| 35 | ||
| 36 | ;; Fortran mode was upgraded by Stephen A. Wood (saw@cebaf.gov). | |
| 23029d77 JB |
37 | |
| 38 | ;; We acknowledge many contributions and valuable suggestions by | |
| b8cbdf43 | 39 | ;; Lawrence R. Dodd, Ralf Fassel, Ralph Finch, Stephen Gildea, |
| 60db3594 | 40 | ;; Dr. Anil Gokhale, Ulrich Mueller, Mark Neale, Eric Prestemon, |
| b8cbdf43 RS |
41 | ;; Gary Sabot and Richard Stallman. |
| 42 | ||
| e5167999 ER |
43 | ;;; Code: |
| 44 | ||
| 45cf60ae | 45 | ;; Todo: |
| 1eb6bf70 | 46 | |
| 315aa1de | 47 | ;; * Tidy it all up (more)! |
| 1eb6bf70 DL |
48 | ;; * Implement insertion and removal of statement continuations in |
| 49 | ;; mixed f77/f90 style, with the first `&' past column 72 and the | |
| 50 | ;; second in column 6. | |
| b2523604 | 51 | ;; * Support any other extensions to f77 grokked by GNU Fortran I've missed. |
| 1eb6bf70 | 52 | |
| 5d724235 SM |
53 | ;; silence compiler |
| 54 | (defvar dabbrev-case-fold-search) | |
| 5d724235 SM |
55 | (defvar gud-find-expr-function) |
| 56 | (defvar imenu-case-fold-search) | |
| 57 | (defvar imenu-syntax-alist) | |
| e83d1fe8 DN |
58 | (defvar comment-region-function) |
| 59 | (defvar uncomment-region-function) | |
| 5b04210c | 60 | |
| fcad5199 | 61 | (defgroup fortran nil |
| 5b04210c | 62 | "Major mode for editing fixed format Fortran code." |
| 8ec3bce0 JL |
63 | :link '(custom-group-link :tag "Font Lock Faces group" font-lock-faces) |
| 64 | :link '(custom-manual "(emacs)Fortran") | |
| fcad5199 RS |
65 | :group 'languages) |
| 66 | ||
| 67 | (defgroup fortran-indent nil | |
| 5b04210c | 68 | "Indentation variables in Fortran mode." |
| fcad5199 | 69 | :prefix "fortran-" |
| 5b04210c | 70 | :group 'fortran) |
| fcad5199 RS |
71 | |
| 72 | (defgroup fortran-comment nil | |
| 5b04210c | 73 | "Comment-handling variables in Fortran mode." |
| fcad5199 | 74 | :prefix "fortran-" |
| 5b04210c | 75 | :group 'fortran) |
| fcad5199 RS |
76 | |
| 77 | ||
| fcad5199 | 78 | (defcustom fortran-tab-mode-default nil |
| 694cf05e | 79 | "Default tabbing/carriage control style for empty files in Fortran mode. |
| 5b04210c | 80 | A non-nil value specifies tab-digit style of continuation control. |
| e80f2147 | 81 | A value of nil specifies that continuation lines are marked |
| fcad5199 | 82 | with a character in column 6." |
| 5b04210c | 83 | :type 'boolean |
| 2fa20711 | 84 | :safe 'booleanp |
| fcad5199 | 85 | :group 'fortran-indent) |
| e80f2147 | 86 | |
| 694cf05e GM |
87 | ;; TODO add more detail of what tab mode is to doc string. |
| 88 | (defcustom fortran-tab-mode-string | |
| 89 | (propertize "/t" 'help-echo "This buffer is in Fortran TAB mode" | |
| 90 | 'mouse-face 'mode-line-highlight | |
| 91 | 'local-map | |
| 92 | (make-mode-line-mouse-map 'mouse-1 | |
| 93 | (lambda () | |
| 94 | (interactive) | |
| 95 | (describe-variable | |
| 96 | 'fortran-tab-mode-string)))) | |
| cd9b5d3e GM |
97 | "String to appear in mode line in TAB format buffers. |
| 98 | See Info node `(emacs)ForIndent Cont'." | |
| 5b04210c | 99 | :type 'string |
| 2fa20711 | 100 | :risky t |
| fcad5199 | 101 | :group 'fortran-indent) |
| 694cf05e | 102 | |
| fcad5199 | 103 | (defcustom fortran-do-indent 3 |
| 694cf05e | 104 | "Extra indentation applied to DO blocks." |
| 5b04210c | 105 | :type 'integer |
| 2fa20711 | 106 | :safe 'integerp |
| fcad5199 RS |
107 | :group 'fortran-indent) |
| 108 | ||
| 109 | (defcustom fortran-if-indent 3 | |
| 694cf05e | 110 | "Extra indentation applied to IF, SELECT CASE and WHERE blocks." |
| 5b04210c | 111 | :type 'integer |
| 2fa20711 | 112 | :safe 'integerp |
| fcad5199 RS |
113 | :group 'fortran-indent) |
| 114 | ||
| 115 | (defcustom fortran-structure-indent 3 | |
| 694cf05e | 116 | "Extra indentation applied to STRUCTURE, UNION, MAP and INTERFACE blocks." |
| 5b04210c | 117 | :type 'integer |
| 2fa20711 | 118 | :safe 'integerp |
| fcad5199 RS |
119 | :group 'fortran-indent) |
| 120 | ||
| 121 | (defcustom fortran-continuation-indent 5 | |
| 694cf05e | 122 | "Extra indentation applied to continuation lines." |
| 5b04210c | 123 | :type 'integer |
| 2fa20711 | 124 | :safe 'integerp |
| fcad5199 RS |
125 | :group 'fortran-indent) |
| 126 | ||
| 127 | (defcustom fortran-comment-indent-style 'fixed | |
| 694cf05e | 128 | "How to indent comments. |
| 5b04210c GM |
129 | nil forces comment lines not to be touched; |
| 130 | `fixed' indents to `fortran-comment-line-extra-indent' columns beyond | |
| 131 | `fortran-minimum-statement-indent-fixed' (if `indent-tabs-mode' nil), or | |
| 132 | `fortran-minimum-statement-indent-tab' (if `indent-tabs-mode' non-nil); | |
| ff451e17 SM |
133 | `relative' indents to current Fortran indentation plus |
| 134 | `fortran-comment-line-extra-indent'." | |
| 5b04210c | 135 | :type '(radio (const :tag "Untouched" nil) (const fixed) (const relative)) |
| 2fa20711 | 136 | :safe (lambda (value) (memq value '(nil fixed relative))) |
| fcad5199 RS |
137 | :group 'fortran-indent) |
| 138 | ||
| 139 | (defcustom fortran-comment-line-extra-indent 0 | |
| 694cf05e | 140 | "Amount of extra indentation for text within full-line comments." |
| 5b04210c | 141 | :type 'integer |
| 2fa20711 | 142 | :safe 'integerp |
| fcad5199 RS |
143 | :group 'fortran-indent |
| 144 | :group 'fortran-comment) | |
| 145 | ||
| 68ca306c | 146 | (defcustom fortran-comment-line-start "C" |
| 694cf05e | 147 | "Delimiter inserted to start new full-line comment. |
| cd9b5d3e GM |
148 | You might want to change this to \"*\", for instance; or \"!\" to |
| 149 | allow trailing comments on a line." | |
| 7dae727d | 150 | :version "21.1" |
| 5b04210c | 151 | :type 'string |
| 2fa20711 | 152 | :safe 'stringp |
| 5b04210c | 153 | :group 'fortran-comment) |
| fcad5199 | 154 | |
| 68ca306c DL |
155 | ;; This used to match preprocessor lines too, but that messes up |
| 156 | ;; filling and doesn't seem to be necessary. | |
| 157 | (defcustom fortran-comment-line-start-skip | |
| 8b31236d | 158 | "^[CcDd*!]\\(\\([^ \t\n]\\)\\2+\\)?[ \t]*" |
| a227f163 | 159 | "Regexp to match the start of a full-line comment." |
| 7dae727d | 160 | :version "21.1" |
| 5b04210c | 161 | :type 'regexp |
| 2fa20711 | 162 | :safe 'stringp |
| 5b04210c | 163 | :group 'fortran-comment) |
| fcad5199 | 164 | |
| 5a73972b | 165 | (defcustom fortran-directive-re |
| 8edfcc7d | 166 | "^[ \t]*#.*" |
| 694cf05e | 167 | "Regexp to match a directive line. |
| 5a73972b GM |
168 | The matching text will be fontified with `font-lock-keyword-face'. |
| 169 | The matching line will be given zero indentation." | |
| bf247b6e | 170 | :version "22.1" |
| 5b04210c | 171 | :type 'regexp |
| 2fa20711 | 172 | :safe 'stringp |
| 5b04210c | 173 | :group 'fortran-indent) |
| 8edfcc7d | 174 | |
| fcad5199 | 175 | (defcustom fortran-minimum-statement-indent-fixed 6 |
| 694cf05e | 176 | "Minimum statement indentation for fixed format continuation style." |
| 5b04210c | 177 | :type 'integer |
| 2fa20711 | 178 | :safe 'integerp |
| fcad5199 RS |
179 | :group 'fortran-indent) |
| 180 | ||
| 181 | (defcustom fortran-minimum-statement-indent-tab (max tab-width 6) | |
| 694cf05e | 182 | "Minimum statement indentation for TAB format continuation style." |
| 5b04210c | 183 | :type 'integer |
| 2fa20711 | 184 | :safe 'integerp |
| fcad5199 | 185 | :group 'fortran-indent) |
| 3dd63760 JB |
186 | |
| 187 | ;; Note that this is documented in the v18 manuals as being a string | |
| 188 | ;; of length one rather than a single character. | |
| 189 | ;; The code in this file accepts either format for compatibility. | |
| fcad5199 | 190 | (defcustom fortran-comment-indent-char " " |
| 694cf05e | 191 | "Single-character string inserted for Fortran comment indentation. |
| fcad5199 | 192 | Normally a space." |
| 5b04210c | 193 | :type 'string |
| 2fa20711 GM |
194 | :safe (lambda (value) (or (characterp value) |
| 195 | (and (stringp value) (= (length value) 1)))) | |
| fcad5199 | 196 | :group 'fortran-comment) |
| 3dd63760 | 197 | |
| fcad5199 | 198 | (defcustom fortran-line-number-indent 1 |
| 694cf05e | 199 | "Maximum indentation for Fortran line numbers. |
| fcad5199 | 200 | 5 means right-justify them within their five-column field." |
| 5b04210c | 201 | :type 'integer |
| 2fa20711 | 202 | :safe 'integerp |
| fcad5199 | 203 | :group 'fortran-indent) |
| 3dd63760 | 204 | |
| fcad5199 | 205 | (defcustom fortran-check-all-num-for-matching-do nil |
| 694cf05e | 206 | "Non-nil causes all numbered lines to be treated as possible DO loop ends." |
| 5b04210c | 207 | :type 'boolean |
| 2fa20711 | 208 | :safe 'booleanp |
| fcad5199 | 209 | :group 'fortran) |
| 3dd63760 | 210 | |
| fcad5199 | 211 | (defcustom fortran-blink-matching-if nil |
| 694cf05e | 212 | "Non-nil causes \\[fortran-indent-line] on ENDIF to blink on matching IF. |
| fcad5199 | 213 | Also, from an ENDDO statement blink on matching DO [WHILE] statement." |
| 5b04210c | 214 | :type 'boolean |
| 2fa20711 | 215 | :safe 'booleanp |
| fcad5199 | 216 | :group 'fortran) |
| 3dd63760 | 217 | |
| fcad5199 | 218 | (defcustom fortran-continuation-string "$" |
| 694cf05e | 219 | "Single-character string used for Fortran continuation lines. |
| 3dd63760 JB |
220 | In fixed format continuation style, this character is inserted in |
| 221 | column 6 by \\[fortran-split-line] to begin a continuation line. | |
| 5b04210c GM |
222 | Also, if \\[fortran-indent-line] finds this at the beginning of a |
| 223 | line, it will convert the line into a continuation line of the | |
| cd9b5d3e | 224 | appropriate style. Normally \"$\"." |
| 5b04210c | 225 | :type 'string |
| 2fa20711 | 226 | :safe (lambda (value) (and (stringp value) (= (length value) 1))) |
| fcad5199 | 227 | :group 'fortran) |
| 3dd63760 | 228 | |
| fcad5199 | 229 | (defcustom fortran-comment-region "c$$$" |
| 694cf05e | 230 | "String inserted by \\[fortran-comment-region] at start of each \ |
| 1eb6bf70 | 231 | line in region." |
| 5b04210c | 232 | :type 'string |
| 2fa20711 | 233 | :safe 'stringp |
| fcad5199 | 234 | :group 'fortran-comment) |
| 3dd63760 | 235 | |
| fcad5199 | 236 | (defcustom fortran-electric-line-number t |
| 694cf05e | 237 | "Non-nil causes line numbers to be moved to the correct column as typed." |
| 5b04210c | 238 | :type 'boolean |
| 2fa20711 | 239 | :safe 'booleanp |
| fcad5199 | 240 | :group 'fortran) |
| 3dd63760 | 241 | |
| 694cf05e | 242 | ;; TODO use fortran-line-length, somehow. |
| 5b04210c | 243 | (defcustom fortran-column-ruler-fixed |
| 23029d77 | 244 | "0 4 6 10 20 30 40 5\ |
| 7977773d | 245 | 0 60 70\n\ |
| f022dd89 SM |
246 | \[ ]|{ | | | | | | | | \ |
| 247 | \| | | | |}\n" | |
| dc6579ac | 248 | "String displayed above current line by \\[fortran-column-ruler]. |
| 5b04210c GM |
249 | This variable is used in fixed format mode. |
| 250 | See the variable `fortran-column-ruler-tab' for TAB format mode." | |
| 251 | :type 'string | |
| 2fa20711 | 252 | :safe 'stringp |
| 5b04210c | 253 | :group 'fortran) |
| 23029d77 | 254 | |
| 694cf05e | 255 | ;; TODO use fortran-line-length, somehow. |
| 5b04210c | 256 | (defcustom fortran-column-ruler-tab |
| 23029d77 | 257 | "0 810 20 30 40 5\ |
| 7977773d | 258 | 0 60 70\n\ |
| f022dd89 SM |
259 | \[ ]| { | | | | | | | | \ |
| 260 | \| | | | |}\n" | |
| dc6579ac | 261 | "String displayed above current line by \\[fortran-column-ruler]. |
| 5b04210c GM |
262 | This variable is used in TAB format mode. |
| 263 | See the variable `fortran-column-ruler-fixed' for fixed format mode." | |
| 264 | :type 'string | |
| 2fa20711 | 265 | :safe 'stringp |
| 5b04210c | 266 | :group 'fortran) |
| 3dd63760 | 267 | |
| 5b04210c GM |
268 | (defcustom fortran-analyze-depth 100 |
| 269 | "Number of lines to scan to identify fixed or TAB format style." | |
| 270 | :type 'integer | |
| 2fa20711 | 271 | :safe 'integerp |
| 5b04210c | 272 | :group 'fortran) |
| 3dd63760 | 273 | |
| fcad5199 | 274 | (defcustom fortran-break-before-delimiters t |
| 694cf05e | 275 | "Non-nil causes filling to break lines before delimiters. |
| 337c50a5 | 276 | Delimiters are characters matching the regexp `fortran-break-delimiters-re'." |
| 5b04210c | 277 | :type 'boolean |
| 2fa20711 | 278 | :safe 'booleanp |
| fcad5199 | 279 | :group 'fortran) |
| b8cbdf43 | 280 | |
| 694cf05e GM |
281 | ;; TODO 0 as no-limit, as per g77. |
| 282 | (defcustom fortran-line-length 72 | |
| 283 | "Maximum number of characters in a line of fixed-form Fortran code. | |
| 284 | Characters beyond this point are treated as comments. Setting | |
| 285 | this variable directly (after fortran mode is loaded) does not | |
| 286 | take effect. Use either \\[customize] (which affects all Fortran | |
| 287 | buffers and the default) or the function | |
| 288 | `fortran-line-length' (which can also operate on just the current | |
| 289 | buffer). This corresponds to the g77 compiler option | |
| 290 | `-ffixed-line-length-N'." | |
| 291 | :type 'integer | |
| 2fa20711 | 292 | :safe 'integerp |
| 694cf05e | 293 | :initialize 'custom-initialize-default |
| e02f48d7 | 294 | :set (lambda (_symbol value) |
| 694cf05e GM |
295 | ;; Do all fortran buffers, and the default. |
| 296 | (fortran-line-length value t)) | |
| 297 | :version "23.1" | |
| 298 | :group 'fortran) | |
| 299 | ||
| 694cf05e GM |
300 | (make-variable-buffer-local 'fortran-line-length) |
| 301 | ||
| 302 | (defcustom fortran-mode-hook nil | |
| 303 | "Hook run when entering Fortran mode." | |
| 304 | :type 'hook | |
| 305 | :group 'fortran) | |
| 306 | ||
| 307 | \f | |
| 337c50a5 GM |
308 | (defconst fortran-break-delimiters-re "[-+*/><=, \t]" |
| 309 | "Regexp matching delimiter characters at which lines may be broken. | |
| 310 | There are certain tokens comprised entirely of characters | |
| 311 | matching this regexp that should not be split, and these are | |
| 312 | specified by the constant `fortran-no-break-re'.") | |
| 313 | ||
| 314 | ;; The ">=", etc F77 extensions are supported by g77. | |
| 315 | (defconst fortran-no-break-re | |
| 316 | (regexp-opt '("**" "//" "=>" ">=" "<=" "==" "/=") 'paren) | |
| 317 | "Regexp specifying where not to break lines when filling. | |
| 318 | This regexp matches certain tokens comprised entirely of | |
| 319 | characters matching the regexp `fortran-break-delimiters-re' that should | |
| 320 | not be split by filling. Each element is assumed to be two | |
| 321 | characters long.") | |
| 322 | ||
| 694cf05e | 323 | (defconst fortran-if-start-re "\\(\\(\\sw\\|\\s_\\)+:[ \t]*\\)?if[ \t]*(" |
| 5b04210c GM |
324 | "Regexp matching the start of an IF statement.") |
| 325 | ||
| 4a948dbf GM |
326 | ;; Note fortran-current-defun uses the subgroups. |
| 327 | (defconst fortran-start-prog-re | |
| 328 | "^[ \t]*\\(program\\|subroutine\\|function\ | |
| 329 | \\|[ \ta-z0-9*()]*[ \t]+function\\|\ | |
| 330 | \\(block[ \t]*data\\)\\)" | |
| 331 | "Regexp matching the start of a subprogram, from the line start.") | |
| 332 | ||
| 694cf05e | 333 | (defconst fortran-end-prog-re1 |
| 5b04210c GM |
334 | "end\ |
| 335 | \\([ \t]*\\(program\\|subroutine\\|function\\|block[ \t]*data\\)\\>\ | |
| 336 | \\([ \t]*\\(\\sw\\|\\s_\\)+\\)?\\)?" | |
| 337 | "Regexp possibly matching the end of a subprogram.") | |
| 563f09b5 | 338 | |
| 694cf05e | 339 | (defconst fortran-end-prog-re |
| 5b04210c GM |
340 | (concat "^[ \t0-9]*" fortran-end-prog-re1) |
| 341 | "Regexp possibly matching the end of a subprogram, from the line start. | |
| 342 | See also `fortran-end-prog-re1'.") | |
| 343 | ||
| 344 | (defconst fortran-type-types | |
| 345 | (concat "\\<" | |
| 346 | (mapconcat 'identity ; " " -> "[ \t]*" | |
| 347 | (split-string | |
| 348 | (regexp-opt | |
| 349 | (let ((simple-types | |
| 350 | '("character" "byte" "integer" "logical" | |
| 351 | "none" "real" "complex" | |
| 352 | "double precision" "double complex")) | |
| 353 | (structured-types '("structure" "union" "map")) | |
| 354 | (other-types '("record" "dimension" | |
| 355 | "parameter" "common" "save" | |
| 356 | "external" "intrinsic" "data" | |
| 357 | "equivalence"))) | |
| 358 | (append | |
| 359 | (mapcar (lambda (x) (concat "implicit " x)) | |
| 360 | simple-types) | |
| 361 | simple-types | |
| 362 | (mapcar (lambda (x) (concat "end " x)) | |
| 363 | structured-types) | |
| 364 | structured-types | |
| 365 | other-types)) 'paren)) | |
| 366 | "[ \t]*") "\\>") | |
| 367 | "Regexp matching Fortran types.") | |
| 368 | ||
| 369 | (defvar fortran-font-lock-keywords-1 | |
| 370 | ;; Program, subroutine and function declarations, plus calls. | |
| 371 | '(("\\<\\(block[ \t]*data\\|call\\|entry\\|function\\|\ | |
| 372 | program\\|subroutine\\)\\>[ \t]*\\(\\sw+\\)?" | |
| 373 | (1 font-lock-keyword-face) | |
| 374 | (2 font-lock-function-name-face nil t))) | |
| f3d4eb7b | 375 | "Subdued level highlighting for Fortran mode.") |
| 563f09b5 | 376 | |
| 5b04210c GM |
377 | (defvar fortran-font-lock-keywords-2 |
| 378 | (append fortran-font-lock-keywords-1 | |
| 379 | (list | |
| 380 | ;; Fontify all type specifiers (must be first - see below). | |
| 381 | (cons fortran-type-types 'font-lock-type-face) | |
| 382 | ;; Builtin keywords (except logical, do and goto - see below). | |
| 383 | (concat "\\<" (regexp-opt | |
| 384 | '("continue" "format" "end" "enddo" | |
| 385 | "if" "then" "else" "endif" "elseif" | |
| 386 | "while" "inquire" "stop" "return" | |
| 387 | "include" "open" "close" "read" | |
| 388 | "write" "format" "print" "select" "case" | |
| 8cb8832f GM |
389 | "cycle" "exit" "rewind" "backspace" |
| 390 | "where" "elsewhere") | |
| 5b04210c GM |
391 | 'paren) "\\>") |
| 392 | ;; Builtin operators. | |
| 393 | (concat "\\." (regexp-opt | |
| ac342f28 GM |
394 | '("and" "eq" "eqv" "false" "ge" "gt" "le" "lt" "ne" |
| 395 | "neqv" "not" "or" "true") | |
| 5b04210c GM |
396 | 'paren) "\\.") |
| 397 | ;; do/goto keywords and targets, and goto tags. | |
| 398 | '("\\<\\(do\\|go *to\\)\\>[ \t]*\\([0-9]+\\)?" | |
| 399 | (1 font-lock-keyword-face) | |
| 400 | (2 font-lock-constant-face nil t)) | |
| 401 | '("^ *\\([0-9]+\\)" . font-lock-constant-face))) | |
| f408b027 SM |
402 | "Medium level highlighting for Fortran mode.") |
| 403 | ||
| 0a23b2c3 | 404 | ;; See bug#1385. Never really looked into _why_ this matters... |
| 119850e9 GM |
405 | (defun fortran-match-and-skip-declaration (limit) |
| 406 | "Like `font-lock-match-c-style-declaration-item-and-skip-to-next'. | |
| 407 | The only difference is, it returns t in a case when the default returns nil." | |
| 408 | (when (looking-at "[ \n\t*]*\\(\\sw+\\)[ \t\n]*\\(((?\\)?") | |
| 409 | (when (and (match-end 2) (> (- (match-end 2) (match-beginning 2)) 1)) | |
| 410 | (let ((pos (point))) | |
| 411 | (skip-chars-backward " \t\n") | |
| 412 | (skip-syntax-backward "w") | |
| 413 | (unless (looking-at "\\(\\sw+\\)[ \t\n]*\\sw+[ \t\n]*\\(((?\\)?") | |
| 414 | (goto-char pos) | |
| 415 | (looking-at "[ \n\t*]*\\(\\sw+\\)[ \t\n]*\\(((?\\)?")))) | |
| 416 | (save-match-data | |
| 417 | (condition-case nil | |
| 418 | (save-restriction | |
| 419 | (narrow-to-region (point-min) limit) | |
| 420 | (goto-char (match-end 1)) | |
| 421 | (while (not (looking-at "[ \t\n]*\\(\\(,\\)\\|;\\|\\'\\)")) | |
| 422 | (goto-char (or (scan-sexps (point) 1) (point-max)))) | |
| 423 | (goto-char (match-end 2))) | |
| 424 | (error t))))) | |
| 425 | ||
| 5b04210c GM |
426 | (defvar fortran-font-lock-keywords-3 |
| 427 | (append | |
| 428 | fortran-font-lock-keywords-1 | |
| 429 | ;; All type specifiers plus their declared items. | |
| 430 | (list | |
| 431 | (list (concat fortran-type-types "[ \t(/]*\\(*\\)?") | |
| 432 | ;; Type specifier. | |
| 433 | '(1 font-lock-type-face) | |
| 434 | ;; Declaration item (or just /.../ block name). | |
| 119850e9 | 435 | `(fortran-match-and-skip-declaration |
| 5b04210c GM |
436 | ;; Start after any *(...) expression. |
| 437 | (condition-case nil | |
| 438 | (and (match-beginning ,(1+ (regexp-opt-depth | |
| 439 | fortran-type-types))) | |
| 440 | (forward-sexp) | |
| 441 | (forward-sexp)) | |
| 442 | (error nil)) | |
| 443 | ;; No need to clean up. | |
| 444 | nil | |
| 445 | ;; Fontify as a variable name, functions fontified elsewhere. | |
| 446 | (1 font-lock-variable-name-face nil t)))) | |
| 447 | ;; Things extra to `fortran-font-lock-keywords-3' (must be done first). | |
| 448 | (list | |
| 449 | ;; Goto-like `err=label'/`end=label' in read/write statements. | |
| 450 | '(", *\\(e\\(nd\\|rr\\)\\)\\> *\\(= *\\([0-9]+\\)\\)?" | |
| 451 | (1 font-lock-keyword-face) (4 font-lock-constant-face nil t)) | |
| 452 | ;; Standard continuation character and in a TAB-formatted line. | |
| 453 | '("^ \\{5\\}\\([^ 0\n]\\)" 1 font-lock-string-face) | |
| 454 | '("^\t\\([1-9]\\)" 1 font-lock-string-face)) | |
| 455 | `((,fortran-directive-re (0 font-lock-keyword-face t))) | |
| 456 | ;; `fortran-font-lock-keywords-2' without types (see above). | |
| 457 | (cdr (nthcdr (length fortran-font-lock-keywords-1) | |
| 458 | fortran-font-lock-keywords-2))) | |
| f408b027 SM |
459 | "Gaudy level highlighting for Fortran mode.") |
| 460 | ||
| 8cb8832f GM |
461 | (defvar fortran-font-lock-keywords-4 |
| 462 | (append fortran-font-lock-keywords-3 | |
| 463 | (list (list | |
| 464 | (concat "\\<" | |
| 465 | (regexp-opt | |
| 466 | '("int" "ifix" "idint" "real" "float" "sngl" | |
| 467 | "dble" "cmplx" "ichar" "char" "aint" "dint" | |
| 468 | "anint" "dnint" "nint" "idnint" "iabs" "abs" | |
| 469 | "dabs" "cabs" "mod" "amod" "dmod" "isign" | |
| 470 | "sign" "dsign" "idim" "dim" "ddim" "dprod" | |
| 471 | "max" "max0" "amax1" "dmax1" "amax0" "max1" | |
| 742695df GM |
472 | "min" "min0" "amin1" "dmin1" "amin0" "min1" |
| 473 | "len" "index" "lge" "lgt" "lle" "llt" "aimag" | |
| 8cb8832f GM |
474 | "conjg" "sqrt" "dsqrt" "csqrt" "exp" "dexp" |
| 475 | "cexp" "log" "alog" "dlog" "clog" "log10" | |
| 476 | "alog10" "dlog10" "sin" "dsin" "csin" "cos" | |
| 477 | "dcos" "ccos" "tan" "dtan" "asin" "dasin" | |
| 478 | "acos" "dacos" "atan" "datan" "atan2" "datan2" | |
| 479 | "sinh" "dsinh" "cosh" "dcosh" "tanh" "dtanh") | |
| 480 | 'paren) "[ \t]*(") '(1 font-lock-builtin-face)))) | |
| 481 | "Maximum highlighting for Fortran mode. | |
| 482 | Consists of level 3 plus all other intrinsics not already highlighted.") | |
| 483 | ||
| 5b04210c GM |
484 | ;; Comments are real pain in Fortran because there is no way to |
| 485 | ;; represent the standard comment syntax in an Emacs syntax table. | |
| 486 | ;; (We can do so for F90-style). Therefore an unmatched quote in a | |
| 487 | ;; standard comment will throw fontification off on the wrong track. | |
| 488 | ;; So we do syntactic fontification with regexps. | |
| b879a6e2 SM |
489 | (defun fortran-make-syntax-propertize-function (line-length) |
| 490 | "Return a value for `syntax-propertize-function' in Fortran mode. | |
| 491 | This varies according to the value of LINE-LENGTH. | |
| 694cf05e | 492 | This is used to fontify fixed-format Fortran comments." |
| b879a6e2 SM |
493 | ;; This results in a non-byte-compiled function. We could pass it through |
| 494 | ;; `byte-compile', but simple benchmarks indicate that it's probably not | |
| dd19b5fb | 495 | ;; worth the trouble (about 0.5% of slow down). |
| b879a6e2 SM |
496 | (eval ;I hate `eval', but it's hard to avoid it here. |
| 497 | `(syntax-propertize-rules | |
| 498 | ("^[cd\\*]" (0 "<")) | |
| 499 | ;; We mark all chars after line-length as "comment-start", rather than | |
| 500 | ;; just the first one. This is so that a closing ' that's past the | |
| 501 | ;; line-length will indeed be ignored (and will result in a string that | |
| 502 | ;; leaks into subsequent lines). | |
| 503 | ((format "^[^cd\\*\t\n].\\{%d\\}\\(.+\\)" (1- line-length)) | |
| 504 | (1 "<"))))) | |
| 0f1057e9 | 505 | |
| f3d4eb7b SM |
506 | (defvar fortran-font-lock-keywords fortran-font-lock-keywords-1 |
| 507 | "Default expressions to highlight in Fortran mode.") | |
| 5b04210c | 508 | |
| 9645c179 | 509 | (defvar fortran-imenu-generic-expression |
| 240e9cda DL |
510 | ;; These patterns could be confused by sequence nos. in cols 72+ and |
| 511 | ;; don't allow continuations everywhere. | |
| 7977773d DL |
512 | (list |
| 513 | (list | |
| 514 | nil | |
| a8189dfe DL |
515 | ;; [This will be fooled by `end function' allowed by G77. Also, |
| 516 | ;; it assumes sensible whitespace is employed.] | |
| 517 | (concat | |
| 518 | ;; leading whitespace: | |
| 519 | "^\\s-+\\(" | |
| 520 | ;; function declaration with optional type, e.g. `real', | |
| 521 | ;; `real*4', character(*), `double precision': | |
| 522 | "\\(\\sw\\|\\s-\\|[*()+]\\)*" | |
| 523 | "\\<function\\|subroutine\\|entry\\|block\\s-*data\\|program\\)" | |
| 524 | ;; Possible statement continuation: | |
| 525 | "[ \t" fortran-continuation-string "]+" | |
| 526 | ;; Variable to index: | |
| 527 | "\\(\\sw+\\)") | |
| 7977773d | 528 | 3) |
| 5b04210c GM |
529 | ;; Un-named block data. |
| 530 | '(nil "^\\s-+\\(block\\s-*data\\)\\s-*$" 1)) | |
| 531 | "Value for `imenu-generic-expression' in Fortran mode.") | |
| 532 | ||
| 533 | \f | |
| 8cb8832f GM |
534 | ;; Hideshow support. |
| 535 | (defconst fortran-blocks-re | |
| 536 | (concat "block[ \t]*data\\|select[ \t]*case\\|" | |
| 537 | (regexp-opt '("do" "if" "interface" "function" "map" "program" | |
| 538 | "structure" "subroutine" "union" "where"))) | |
| 539 | "Regexp potentially indicating the start or end of a Fortran \"block\". | |
| 540 | Omits naked END statements, and DO-loops closed by anything other | |
| 541 | than ENDDO.") | |
| 542 | ||
| 543 | (defconst fortran-end-block-re | |
| 544 | ;; Do-loops terminated by things other than ENDDO cannot be handled | |
| 545 | ;; with a regexp. This omission does not seem to matter to hideshow... | |
| 546 | (concat "^[ \t0-9]*\\<end[ \t]*\\(" | |
| 547 | fortran-blocks-re | |
| 548 | ;; Naked END statement. | |
| 549 | "\\|!\\|$\\)") | |
| 550 | "Regexp matching the end of a Fortran \"block\", from the line start. | |
| 551 | Note that only ENDDO is handled for the end of a DO-loop. Used | |
| 552 | in the Fortran entry in `hs-special-modes-alist'.") | |
| 553 | ||
| 554 | (defconst fortran-start-block-re | |
| 555 | (concat | |
| 556 | "^[ \t0-9]*\\(" ; statement number | |
| 557 | ;; Structure label for DO, IF, SELECT, WHERE. | |
| 558 | "\\(\\(\\sw+[ \t]*:[ \t]*\\)?" | |
| 559 | ;; IF blocks are a nuisance: | |
| 560 | ;; IF ( ... ) foo is not a block, but a single statement. | |
| 561 | ;; IF ( ... ) THEN can be split over multiple lines. | |
| 562 | ;; [So can, eg, a DO WHILE (... ), but that is less common, I hope.] | |
| 563 | ;; The regexp below allows for it to be split over at most 2 lines. | |
| 564 | ;; That leads to the problem of not matching two consecutive IF | |
| 565 | ;; statements as one, eg: | |
| 566 | ;; IF ( ... ) foo | |
| 567 | ;; IF ( ... ) THEN | |
| 568 | ;; It simply is not possible to do this in a 100% correct fashion | |
| 569 | ;; using a regexp - see the functions fortran-end-if, | |
| 570 | ;; fortran-beginning-if for the hoops we have to go through. | |
| 571 | ;; An alternative is to match on THEN at a line end, eg: | |
| 572 | ;; ".*)[ \t]*then[ \t]*\\($\\|!\\)" | |
| 573 | ;; This would also match ELSE branches, though. This does not seem | |
| c5e87d10 | 574 | ;; right to me, because then one has neighboring blocks that are |
| 8cb8832f GM |
575 | ;; not nested in each other. |
| 576 | "\\(if[ \t]*(\\(.*\\|" | |
| 577 | ".*\n\\([^if]*\\([^i].\\|.[^f]\\|.\\>\\)\\)\\)\\<then\\|" | |
| 578 | "do\\|select[ \t]*case\\|where\\)\\)\\|" | |
| 579 | (regexp-opt '("interface" "function" "map" "program" | |
| 580 | "structure" "subroutine" "union")) | |
| 581 | "\\|block[ \t]*data\\)[ \t]*") | |
| 582 | "Regexp matching the start of a Fortran \"block\", from the line start. | |
| 583 | A simple regexp cannot do this in fully correct fashion, so this | |
| 584 | tries to strike a compromise between complexity and flexibility. | |
| 585 | Used in the Fortran entry in `hs-special-modes-alist'.") | |
| 586 | ||
| 587 | (add-to-list 'hs-special-modes-alist | |
| 9d23c925 | 588 | `(fortran-mode ,fortran-start-block-re ,fortran-end-block-re |
| 8cb8832f GM |
589 | "^[cC*!]" fortran-end-of-block nil)) |
| 590 | ||
| 591 | \f | |
| 5b04210c GM |
592 | (defvar fortran-mode-syntax-table |
| 593 | (let ((table (make-syntax-table))) | |
| 17cb3e0e GM |
594 | ;; Was a word-constituent (for abbrevs), now punctuation (g77 |
| 595 | ;; multi-statement lines). | |
| 596 | (modify-syntax-entry ?\; "." table) | |
| 5b04210c GM |
597 | (modify-syntax-entry ?\r " " table) |
| 598 | (modify-syntax-entry ?+ "." table) | |
| 599 | (modify-syntax-entry ?- "." table) | |
| 600 | (modify-syntax-entry ?= "." table) | |
| 601 | (modify-syntax-entry ?* "." table) | |
| 602 | (modify-syntax-entry ?/ "." table) | |
| a8955be7 | 603 | (modify-syntax-entry ?% "." table) ; bug#8820 |
| 5b04210c GM |
604 | (modify-syntax-entry ?\' "\"" table) |
| 605 | (modify-syntax-entry ?\" "\"" table) | |
| 8cb8832f GM |
606 | ;; Consistent with GNU Fortran's default -- see the manual. |
| 607 | ;; The F77 standard imposes no rule on this issue. | |
| 5b04210c GM |
608 | (modify-syntax-entry ?\\ "\\" table) |
| 609 | ;; This might be better as punctuation, as for C, but this way you | |
| 610 | ;; can treat floating-point numbers as symbols. | |
| 611 | (modify-syntax-entry ?. "_" table) ; e.g. `a.ne.b' | |
| 612 | (modify-syntax-entry ?_ "_" table) | |
| 613 | (modify-syntax-entry ?$ "_" table) ; esp. VMSisms | |
| 614 | (modify-syntax-entry ?\! "<" table) | |
| 615 | (modify-syntax-entry ?\n ">" table) | |
| 616 | table) | |
| 617 | "Syntax table used in Fortran mode.") | |
| f408b027 | 618 | |
| f6bf87c5 NR |
619 | (defvar fortran-gud-syntax-table |
| 620 | (let ((st (make-syntax-table fortran-mode-syntax-table))) | |
| 621 | (modify-syntax-entry ?\n "." st) | |
| 622 | st) | |
| 623 | "Syntax table used to parse Fortran expressions for printing in GUD.") | |
| 624 | ||
| 7a7db8e5 | 625 | (defvar fortran-mode-map |
| 315aa1de | 626 | (let ((map (make-sparse-keymap))) |
| 5b04210c GM |
627 | (define-key map ";" 'fortran-abbrev-start) |
| 628 | (define-key map "\C-c;" 'fortran-comment-region) | |
| 7a05f2bd GM |
629 | ;; The default comment-dwim does at least as much as this. |
| 630 | ;;; (define-key map "\M-;" 'fortran-indent-comment) | |
| 5b04210c | 631 | (define-key map "\M-\n" 'fortran-split-line) |
| 8cb8832f GM |
632 | (define-key map "\M-\C-n" 'fortran-end-of-block) |
| 633 | (define-key map "\M-\C-p" 'fortran-beginning-of-block) | |
| 5b04210c | 634 | (define-key map "\M-\C-q" 'fortran-indent-subprogram) |
| 315aa1de DL |
635 | (define-key map "\C-c\C-w" 'fortran-window-create-momentarily) |
| 636 | (define-key map "\C-c\C-r" 'fortran-column-ruler) | |
| 637 | (define-key map "\C-c\C-p" 'fortran-previous-statement) | |
| 638 | (define-key map "\C-c\C-n" 'fortran-next-statement) | |
| 639 | (define-key map "\C-c\C-d" 'fortran-join-line) ; like f90 | |
| 5b04210c | 640 | (define-key map "\M-^" 'fortran-join-line) ; subvert delete-indentation |
| 315aa1de DL |
641 | (define-key map "0" 'fortran-electric-line-number) |
| 642 | (define-key map "1" 'fortran-electric-line-number) | |
| 643 | (define-key map "2" 'fortran-electric-line-number) | |
| 644 | (define-key map "3" 'fortran-electric-line-number) | |
| 645 | (define-key map "4" 'fortran-electric-line-number) | |
| 646 | (define-key map "5" 'fortran-electric-line-number) | |
| 647 | (define-key map "6" 'fortran-electric-line-number) | |
| 648 | (define-key map "7" 'fortran-electric-line-number) | |
| 649 | (define-key map "8" 'fortran-electric-line-number) | |
| 650 | (define-key map "9" 'fortran-electric-line-number) | |
| 7a7db8e5 | 651 | |
| 5b04210c GM |
652 | (easy-menu-define fortran-menu map "Menu for Fortran mode." |
| 653 | `("Fortran" | |
| 9028691d GM |
654 | ["Manual" (info "(emacs)Fortran") :active t |
| 655 | :help "Read the Emacs manual chapter on Fortran mode"] | |
| 5b04210c GM |
656 | ("Customization" |
| 657 | ,(custom-menu-create 'fortran) | |
| 9028691d GM |
658 | ;; FIXME useless? |
| 659 | ["Set" Custom-set :active t | |
| 660 | :help "Set current value of all edited settings in the buffer"] | |
| 661 | ["Save" Custom-save :active t | |
| 662 | :help "Set and save all edited settings"] | |
| 663 | ["Reset to Current" Custom-reset-current :active t | |
| 664 | :help "Reset all edited settings to current"] | |
| 665 | ["Reset to Saved" Custom-reset-saved :active t | |
| 666 | :help "Reset all edited or set settings to saved"] | |
| 667 | ["Reset to Standard Settings" Custom-reset-standard :active t | |
| 668 | :help "Erase all cusomizations in buffer"] | |
| 5b04210c GM |
669 | ) |
| 670 | "--" | |
| 671 | ["Comment Region" fortran-comment-region mark-active] | |
| 672 | ["Uncomment Region" | |
| 673 | (fortran-comment-region (region-beginning) (region-end) 1) | |
| 674 | mark-active] | |
| 675 | ["Indent Region" indent-region mark-active] | |
| 676 | ["Indent Subprogram" fortran-indent-subprogram t] | |
| 677 | "--" | |
| 9028691d GM |
678 | ["Beginning of Subprogram" fortran-beginning-of-subprogram :active t |
| 679 | :help "Move point to the start of the current subprogram"] | |
| 680 | ["End of Subprogram" fortran-end-of-subprogram :active t | |
| 681 | :help "Move point to the end of the current subprogram"] | |
| 5b04210c | 682 | ("Mark" |
| 9028691d | 683 | :help "Mark a region of code" |
| 5b04210c GM |
684 | ["Subprogram" mark-defun t] |
| 685 | ["IF Block" fortran-mark-if t] | |
| 686 | ["DO Block" fortran-mark-do t] | |
| 687 | ) | |
| 688 | ["Narrow to Subprogram" narrow-to-defun t] | |
| 689 | ["Widen" widen t] | |
| 690 | "--" | |
| 9028691d GM |
691 | ["Temporary Column Ruler" fortran-column-ruler :active t |
| 692 | :help "Briefly display Fortran column numbers"] | |
| 694cf05e GM |
693 | ;; May not be '72', depending on fortran-line-length, but this |
| 694 | ;; seems ok for a menu item. | |
| 9028691d GM |
695 | ["72-column Window" fortran-window-create :active t |
| 696 | :help "Set window width to Fortran line length"] | |
| 5b04210c GM |
697 | ["Full Width Window" |
| 698 | (enlarge-window-horizontally (- (frame-width) (window-width))) | |
| 9028691d GM |
699 | :active (not (window-full-width-p)) |
| 700 | :help "Make window full width"] | |
| 701 | ["Momentary 72-Column Window" fortran-window-create-momentarily | |
| 702 | :active t :help "Briefly set window width to Fortran line length"] | |
| 5b04210c | 703 | "--" |
| 9028691d GM |
704 | ["Break Line at Point" fortran-split-line :active t |
| 705 | :help "Break the current line at point"] | |
| 706 | ["Join Line" fortran-join-line :active t | |
| 707 | :help "Join the current line to the previous one"] | |
| 708 | ["Fill Statement/Comment" fill-paragraph t] | |
| 5b04210c | 709 | "--" |
| 9028691d GM |
710 | ["Toggle Auto Fill" auto-fill-mode :selected auto-fill-function |
| 711 | :style toggle | |
| 712 | :help "Automatically fill text while typing in this buffer"] | |
| 713 | ["Toggle Abbrev Mode" abbrev-mode :selected abbrev-mode | |
| 714 | :style toggle :help "Expand abbreviations while typing in this buffer"] | |
| 715 | ["Add Imenu Menu" imenu-add-menubar-index | |
| 5b04210c | 716 | :active (not (lookup-key (current-local-map) [menu-bar index])) |
| 9028691d GM |
717 | :included (fboundp 'imenu-add-to-menubar) |
| 718 | :help "Add an index menu to the menu-bar"])) | |
| 315aa1de | 719 | map) |
| b8cbdf43 | 720 | "Keymap used in Fortran mode.") |
| 5b04210c | 721 | |
| 3dd63760 | 722 | \f |
| 17cb3e0e GM |
723 | (define-abbrev-table 'fortran-mode-abbrev-table |
| 724 | (mapcar (lambda (e) (list (car e) (cdr e) nil :system t)) | |
| 725 | '((";au" . "automatic" ) | |
| 726 | (";b" . "byte" ) | |
| 727 | (";bd" . "block data" ) | |
| 728 | (";ch" . "character" ) | |
| 729 | (";cl" . "close" ) | |
| 730 | (";c" . "continue" ) | |
| 731 | (";cm" . "common" ) | |
| 732 | (";cx" . "complex" ) | |
| 733 | (";df" . "define" ) | |
| 734 | (";di" . "dimension" ) | |
| 735 | (";do" . "double" ) | |
| 736 | (";dc" . "double complex" ) | |
| 737 | (";dp" . "double precision" ) | |
| 738 | (";dw" . "do while" ) | |
| 739 | (";e" . "else" ) | |
| 740 | (";ed" . "enddo" ) | |
| 741 | (";el" . "elseif" ) | |
| 742 | (";en" . "endif" ) | |
| 743 | (";eq" . "equivalence" ) | |
| 744 | (";ew" . "endwhere" ) | |
| 745 | (";ex" . "external" ) | |
| 746 | (";ey" . "entry" ) | |
| 747 | (";f" . "format" ) | |
| 748 | (";fa" . ".false." ) | |
| 749 | (";fu" . "function" ) | |
| 750 | (";g" . "goto" ) | |
| 751 | (";im" . "implicit" ) | |
| 752 | (";ib" . "implicit byte" ) | |
| 753 | (";ic" . "implicit complex" ) | |
| 754 | (";ich" . "implicit character") | |
| 755 | (";ii" . "implicit integer" ) | |
| 756 | (";il" . "implicit logical" ) | |
| 757 | (";ir" . "implicit real" ) | |
| 758 | (";inc" . "include" ) | |
| 759 | (";in" . "integer" ) | |
| 760 | (";intr" . "intrinsic" ) | |
| 761 | (";l" . "logical" ) | |
| 762 | (";n" . "namelist" ) | |
| 763 | (";o" . "open" ) ; was ;op | |
| 764 | (";pa" . "parameter" ) | |
| 765 | (";pr" . "program" ) | |
| 766 | (";ps" . "pause" ) | |
| 767 | (";p" . "print" ) | |
| 768 | (";rc" . "record" ) | |
| 769 | (";re" . "real" ) | |
| 770 | (";r" . "read" ) | |
| 771 | (";rt" . "return" ) | |
| 772 | (";rw" . "rewind" ) | |
| 773 | (";s" . "stop" ) | |
| 774 | (";sa" . "save" ) | |
| 775 | (";st" . "structure" ) | |
| 776 | (";sc" . "static" ) | |
| 777 | (";su" . "subroutine" ) | |
| 778 | (";tr" . ".true." ) | |
| 779 | (";ty" . "type" ) | |
| 780 | (";vo" . "volatile" ) | |
| 781 | (";w" . "write" ) | |
| 782 | (";wh" . "where" ))) | |
| 783 | "Abbrev table for Fortran mode." | |
| 784 | ;; Accept ; as the first char of an abbrev. Also allow _ in abbrevs. | |
| 785 | :regexp "\\(?:[^[:word:]_;]\\|^\\)\\(;?[[:word:]_]+\\)[^[:word:]_]*") | |
| 7977773d | 786 | |
| 5b04210c | 787 | \f |
| 3dd63760 | 788 | ;;;###autoload |
| e75c1e7d | 789 | (define-derived-mode fortran-mode prog-mode "Fortran" |
| 5b04210c GM |
790 | "Major mode for editing Fortran code in fixed format. |
| 791 | For free format code, use `f90-mode'. | |
| 792 | ||
| 60db3594 | 793 | \\[fortran-indent-line] indents the current Fortran line correctly. |
| 5b04210c | 794 | Note that DO statements must not share a common CONTINUE. |
| 3dd63760 | 795 | |
| 5b04210c GM |
796 | Type ;? or ;\\[help-command] to display a list of built-in abbrevs for\ |
| 797 | Fortran keywords. | |
| 3dd63760 JB |
798 | |
| 799 | Key definitions: | |
| 800 | \\{fortran-mode-map} | |
| 801 | ||
| 802 | Variables controlling indentation style and extra features: | |
| 803 | ||
| 8cb8832f | 804 | `fortran-comment-line-start' |
| 5b04210c GM |
805 | To use comments starting with `!', set this to the string \"!\". |
| 806 | `fortran-do-indent' | |
| 807 | Extra indentation within DO blocks (default 3). | |
| 808 | `fortran-if-indent' | |
| 809 | Extra indentation within IF blocks (default 3). | |
| 810 | `fortran-structure-indent' | |
| 811 | Extra indentation within STRUCTURE, UNION, MAP and INTERFACE blocks. | |
| 812 | (default 3) | |
| 813 | `fortran-continuation-indent' | |
| 814 | Extra indentation applied to continuation statements (default 5). | |
| 815 | `fortran-comment-line-extra-indent' | |
| 816 | Amount of extra indentation for text in full-line comments (default 0). | |
| 817 | `fortran-comment-indent-style' | |
| 818 | How to indent the text in full-line comments. Allowed values are: | |
| 819 | nil don't change the indentation | |
| 820 | fixed indent to `fortran-comment-line-extra-indent' beyond the | |
| 821 | value of either | |
| 822 | `fortran-minimum-statement-indent-fixed' (fixed format) or | |
| 823 | `fortran-minimum-statement-indent-tab' (TAB format), | |
| 824 | depending on the continuation format in use. | |
| 825 | relative indent to `fortran-comment-line-extra-indent' beyond the | |
| 9d23c925 | 826 | indentation for a line of code. |
| 5b04210c GM |
827 | (default 'fixed) |
| 828 | `fortran-comment-indent-char' | |
| 829 | Single-character string to be inserted instead of space for | |
| 830 | full-line comment indentation (default \" \"). | |
| 831 | `fortran-minimum-statement-indent-fixed' | |
| 832 | Minimum indentation for statements in fixed format mode (default 6). | |
| 833 | `fortran-minimum-statement-indent-tab' | |
| 834 | Minimum indentation for statements in TAB format mode (default 9). | |
| 835 | `fortran-line-number-indent' | |
| 836 | Maximum indentation for line numbers (default 1). A line number will | |
| 837 | get less than this much indentation if necessary to avoid reaching | |
| 838 | column 5. | |
| 839 | `fortran-check-all-num-for-matching-do' | |
| 840 | Non-nil causes all numbered lines to be treated as possible \"continue\" | |
| 841 | statements (default nil). | |
| 842 | `fortran-blink-matching-if' | |
| 843 | Non-nil causes \\[fortran-indent-line] on an ENDIF (or ENDDO) statement | |
| 844 | to blink on the matching IF (or DO [WHILE]). (default nil) | |
| 845 | `fortran-continuation-string' | |
| 846 | Single-character string to be inserted in column 5 of a continuation | |
| 847 | line (default \"$\"). | |
| 848 | `fortran-comment-region' | |
| 849 | String inserted by \\[fortran-comment-region] at start of each line in | |
| 850 | the region (default \"c$$$\"). | |
| 851 | `fortran-electric-line-number' | |
| 852 | Non-nil causes line number digits to be moved to the correct column | |
| 853 | as typed (default t). | |
| 854 | `fortran-break-before-delimiters' | |
| 855 | Non-nil causes lines to be broken before delimiters (default t). | |
| 3dd63760 | 856 | |
| b8cbdf43 | 857 | Turning on Fortran mode calls the value of the variable `fortran-mode-hook' |
| 3dd63760 | 858 | with no args, if that value is non-nil." |
| e75c1e7d GM |
859 | :group 'fortran |
| 860 | :syntax-table fortran-mode-syntax-table | |
| 861 | :abbrev-table fortran-mode-abbrev-table | |
| 5b04210c GM |
862 | (set (make-local-variable 'indent-line-function) 'fortran-indent-line) |
| 863 | (set (make-local-variable 'indent-region-function) | |
| 864 | (lambda (start end) | |
| 865 | (let (fortran-blink-matching-if ; avoid blinking delay | |
| 866 | indent-region-function) | |
| 867 | (indent-region start end nil)))) | |
| fd98e23a | 868 | (set (make-local-variable 'require-final-newline) mode-require-final-newline) |
| 5b04210c GM |
869 | ;; The syntax tables don't understand the column-0 comment-markers. |
| 870 | (set (make-local-variable 'comment-use-syntax) nil) | |
| 871 | (set (make-local-variable 'comment-padding) "$$$") | |
| 872 | (set (make-local-variable 'comment-start) fortran-comment-line-start) | |
| ff451e17 SM |
873 | (set (make-local-variable 'comment-start-skip) |
| 874 | ;; We can't reuse `fortran-comment-line-start-skip' directly because | |
| 875 | ;; it contains backrefs whereas we need submatch-1 to end at the | |
| 876 | ;; beginning of the comment delimiter. | |
| 877 | ;; (concat "\\(\\)\\(![ \t]*\\|" fortran-comment-line-start-skip "\\)") | |
| 878 | "\\(\\)\\(?:^[CcDd*]\\|!\\)\\(?:\\([^ \t\n]\\)\\2+\\)?[ \t]*") | |
| 5b04210c | 879 | (set (make-local-variable 'comment-indent-function) 'fortran-comment-indent) |
| 7a05f2bd GM |
880 | (set (make-local-variable 'comment-region-function) 'fortran-comment-region) |
| 881 | (set (make-local-variable 'uncomment-region-function) | |
| 882 | 'fortran-uncomment-region) | |
| 883 | (set (make-local-variable 'comment-insert-comment-function) | |
| 884 | 'fortran-indent-comment) | |
| 5b04210c GM |
885 | (set (make-local-variable 'abbrev-all-caps) t) |
| 886 | (set (make-local-variable 'normal-auto-fill-function) 'fortran-auto-fill) | |
| 5b04210c | 887 | (set (make-local-variable 'indent-tabs-mode) (fortran-analyze-file-format)) |
| a7113309 | 888 | (setq mode-line-process '(indent-tabs-mode fortran-tab-mode-string)) |
| 694cf05e | 889 | (set (make-local-variable 'fill-column) fortran-line-length) |
| 1eb6bf70 | 890 | (set (make-local-variable 'fill-paragraph-function) 'fortran-fill-paragraph) |
| 5b04210c GM |
891 | (set (make-local-variable 'font-lock-defaults) |
| 892 | '((fortran-font-lock-keywords | |
| 893 | fortran-font-lock-keywords-1 | |
| 894 | fortran-font-lock-keywords-2 | |
| 8cb8832f GM |
895 | fortran-font-lock-keywords-3 |
| 896 | fortran-font-lock-keywords-4) | |
| 5b04210c | 897 | nil t ((?/ . "$/") ("_$" . "w")) |
| cf38dd42 | 898 | fortran-beginning-of-subprogram)) |
| cf38dd42 | 899 | (set (make-local-variable 'syntax-propertize-function) |
| b879a6e2 | 900 | (fortran-make-syntax-propertize-function fortran-line-length)) |
| 5b04210c GM |
901 | (set (make-local-variable 'imenu-case-fold-search) t) |
| 902 | (set (make-local-variable 'imenu-generic-expression) | |
| 903 | fortran-imenu-generic-expression) | |
| 904 | (set (make-local-variable 'imenu-syntax-alist) '(("_$" . "w"))) | |
| 26ef1c87 DL |
905 | (set (make-local-variable 'beginning-of-defun-function) |
| 906 | #'fortran-beginning-of-subprogram) | |
| 907 | (set (make-local-variable 'end-of-defun-function) | |
| 908 | #'fortran-end-of-subprogram) | |
| 68ca306c DL |
909 | (set (make-local-variable 'add-log-current-defun-function) |
| 910 | #'fortran-current-defun) | |
| 315aa1de | 911 | (set (make-local-variable 'dabbrev-case-fold-search) 'case-fold-search) |
| 5727e748 | 912 | (set (make-local-variable 'gud-find-expr-function) 'fortran-gud-find-expr) |
| e75c1e7d | 913 | (add-hook 'hack-local-variables-hook 'fortran-hack-local-variables nil t)) |
| 5b04210c | 914 | |
| 3dd63760 | 915 | \f |
| 694cf05e GM |
916 | (defun fortran-line-length (nchars &optional global) |
| 917 | "Set the length of fixed-form Fortran lines to NCHARS. | |
| 918 | This normally only affects the current buffer, which must be in | |
| 919 | Fortran mode. If the optional argument GLOBAL is non-nil, it | |
| b879a6e2 SM |
920 | affects all Fortran buffers, and also the default. |
| 921 | If a numeric prefix argument is specified, it will be used as NCHARS, | |
| 922 | otherwise is a non-numeric prefix arg is specified, the length will be | |
| 923 | provided via the minibuffer, and otherwise the current column is used." | |
| 924 | (interactive | |
| 925 | (list (cond | |
| 926 | ((numberp current-prefix-arg) current-prefix-arg) | |
| 927 | (current-prefix-arg | |
| 928 | (read-number "Line length: " (default-value 'fortran-line-length))) | |
| 929 | (t (current-column))))) | |
| 930 | (dolist (buff (if global | |
| 931 | (buffer-list) | |
| 932 | (list (current-buffer)))) | |
| 933 | (with-current-buffer buff | |
| 934 | (when (derived-mode-p 'fortran-mode) | |
| 935 | (unless (eq fortran-line-length nchars) | |
| 936 | (setq fortran-line-length nchars | |
| 937 | fill-column fortran-line-length | |
| 938 | syntax-propertize-function | |
| 939 | (fortran-make-syntax-propertize-function nchars)) | |
| 940 | (syntax-ppss-flush-cache (point-min)) | |
| 941 | (if font-lock-mode (font-lock-mode 1)))))) | |
| 8c5de2a1 | 942 | (if global |
| b879a6e2 | 943 | (setq-default fortran-line-length nchars))) |
| 694cf05e GM |
944 | |
| 945 | (defun fortran-hack-local-variables () | |
| 946 | "Fortran mode adds this to `hack-local-variables-hook'." | |
| 947 | (fortran-line-length fortran-line-length)) | |
| 948 | ||
| 2e49e9f7 GM |
949 | (declare-function gud-find-c-expr "gud.el" nil) |
| 950 | ||
| 5727e748 SM |
951 | (defun fortran-gud-find-expr () |
| 952 | ;; Consider \n as punctuation (end of expression). | |
| 953 | (with-syntax-table fortran-gud-syntax-table | |
| 954 | (gud-find-c-expr))) | |
| 955 | ||
| 315aa1de | 956 | (defsubst fortran-comment-indent () |
| 5b04210c GM |
957 | "Return the indentation appropriate for the current comment line. |
| 958 | This is 0 for a line matching `fortran-comment-line-start-skip', else | |
| 959 | the value of `comment-column' (leaving at least one space after code)." | |
| 960 | (if (looking-at fortran-comment-line-start-skip) 0 | |
| 961 | (save-excursion | |
| ff451e17 | 962 | (skip-chars-backward " \t") |
| 0a39a75c | 963 | (max (1+ (current-column)) comment-column)))) |
| 3dd63760 JB |
964 | |
| 965 | (defun fortran-indent-comment () | |
| 966 | "Align or create comment on current line. | |
| 967 | Existing comments of all types are recognized and aligned. | |
| 5b04210c | 968 | If the line has no comment, a side-by-side comment is inserted and aligned, |
| ff451e17 | 969 | if the value of `comment-start' is not nil and allows such comments. |
| 3dd63760 JB |
970 | Otherwise, a separate-line comment is inserted, on this line |
| 971 | or on a new line inserted before this line if this line is not blank." | |
| 5b04210c | 972 | (interactive "*") |
| 3dd63760 JB |
973 | (beginning-of-line) |
| 974 | ;; Recognize existing comments of either kind. | |
| ff451e17 | 975 | (cond ((fortran-find-comment-start-skip 'all) |
| 9d23c925 GM |
976 | (goto-char (match-beginning 0)) |
| 977 | (if (bolp) | |
| 978 | (fortran-indent-line) | |
| 979 | (unless (= (current-column) (fortran-comment-indent)) | |
| 5b04210c GM |
980 | (delete-horizontal-space) |
| 981 | (indent-to (fortran-comment-indent))))) | |
| 9d23c925 GM |
982 | ;; No existing comment. |
| 983 | ;; If side-by-side comments are defined, insert one, | |
| 984 | ;; unless line is now blank. | |
| 985 | ((and comment-start (not (looking-at "[ \t]*$")) | |
| 986 | (string-match comment-start-skip (concat " " comment-start))) | |
| 987 | (end-of-line) | |
| 988 | (delete-horizontal-space) | |
| 989 | (indent-to (fortran-comment-indent)) | |
| 990 | (insert comment-start)) | |
| 991 | ;; Else insert separate-line comment, making a new line if nec. | |
| 992 | (t | |
| 993 | (if (looking-at "^[ \t]*$") | |
| 994 | (delete-horizontal-space) | |
| 995 | (beginning-of-line) | |
| 996 | (insert ?\n) | |
| 997 | (forward-char -1)) | |
| 998 | (insert fortran-comment-line-start) | |
| 999 | (insert-char (if (stringp fortran-comment-indent-char) | |
| 1000 | (aref fortran-comment-indent-char 0) | |
| 1001 | fortran-comment-indent-char) | |
| 1002 | (- (fortran-calculate-indent) (current-column)))))) | |
| 3dd63760 JB |
1003 | |
| 1004 | (defun fortran-comment-region (beg-region end-region arg) | |
| 5b04210c GM |
1005 | "Comment every line in the region. |
| 1006 | Inserts the string variable `fortran-comment-region' at the beginning of | |
| 1007 | every line in the region. | |
| 1008 | BEG-REGION and END-REGION specify the region boundaries. | |
| 3dd63760 JB |
1009 | With non-nil ARG, uncomments the region." |
| 1010 | (interactive "*r\nP") | |
| b937fd1e | 1011 | (let ((end-region-mark (copy-marker end-region)) |
| 9d23c925 | 1012 | (save-point (point-marker))) |
| 3dd63760 JB |
1013 | (goto-char beg-region) |
| 1014 | (beginning-of-line) | |
| 5b04210c | 1015 | (if arg |
| 0a39a75c | 1016 | (let ((com (regexp-quote fortran-comment-region))) ; uncomment |
| 5b04210c GM |
1017 | (if (looking-at com) |
| 1018 | (delete-region (point) (match-end 0))) | |
| 1019 | (while (and (zerop (forward-line 1)) | |
| 1020 | (< (point) end-region-mark)) | |
| 1021 | (if (looking-at com) | |
| 1022 | (delete-region (point) (match-end 0))))) | |
| 0a39a75c | 1023 | (insert fortran-comment-region) ; comment |
| 5b04210c GM |
1024 | (while (and (zerop (forward-line 1)) |
| 1025 | (< (point) end-region-mark)) | |
| 1026 | (insert fortran-comment-region))) | |
| 3dd63760 JB |
1027 | (goto-char save-point) |
| 1028 | (set-marker end-region-mark nil) | |
| 1029 | (set-marker save-point nil))) | |
| 5b04210c | 1030 | |
| 7a05f2bd GM |
1031 | ;; uncomment-region calls this with 3 args. |
| 1032 | (defun fortran-uncomment-region (start end &optional ignored) | |
| 1033 | "Uncomment every line in the region." | |
| 1034 | (fortran-comment-region start end t)) | |
| 1035 | ||
| 3dd63760 JB |
1036 | \f |
| 1037 | (defun fortran-abbrev-start () | |
| 60db3594 | 1038 | "Typing ;\\[help-command] or ;? lists all the Fortran abbrevs. |
| 3dd63760 | 1039 | Any other key combination is executed normally." |
| 5b04210c | 1040 | (interactive "*") |
| 1ba983e8 | 1041 | (insert last-command-event) |
| 5d724235 SM |
1042 | (let* ((event (if (fboundp 'next-command-event) ; XEmacs |
| 1043 | (next-command-event) | |
| 1044 | (read-event))) | |
| 1045 | (char (if (fboundp 'event-to-character) | |
| 1046 | (event-to-character event) event))) | |
| be35ca9f | 1047 | ;; Insert char if not equal to `?', or if abbrev-mode is off. |
| 5d724235 SM |
1048 | (if (and abbrev-mode (or (eq char ??) (eq char help-char) |
| 1049 | (memq event help-event-list))) | |
| 9d23c925 | 1050 | (fortran-abbrev-help) |
| 5d724235 | 1051 | (push event unread-command-events)))) |
| 3dd63760 JB |
1052 | |
| 1053 | (defun fortran-abbrev-help () | |
| 1054 | "List the currently defined abbrevs in Fortran mode." | |
| 1055 | (interactive) | |
| 1056 | (message "Listing abbrev table...") | |
| e80f2147 | 1057 | (display-buffer (fortran-prepare-abbrev-list-buffer)) |
| 3dd63760 JB |
1058 | (message "Listing abbrev table...done")) |
| 1059 | ||
| e80f2147 | 1060 | (defun fortran-prepare-abbrev-list-buffer () |
| 5b04210c | 1061 | "Create a buffer listing the Fortran mode abbreviations." |
| 5d724235 | 1062 | (with-current-buffer (get-buffer-create "*Abbrevs*") |
| e80f2147 | 1063 | (erase-buffer) |
| 4632a893 | 1064 | (insert-abbrev-table-description 'fortran-mode-abbrev-table t) |
| e80f2147 RS |
1065 | (goto-char (point-min)) |
| 1066 | (set-buffer-modified-p nil) | |
| 1067 | (edit-abbrevs-mode)) | |
| 1068 | (get-buffer-create "*Abbrevs*")) | |
| 1069 | ||
| 3dd63760 | 1070 | (defun fortran-column-ruler () |
| 7977773d | 1071 | "Insert a column ruler momentarily above current line, till next keystroke. |
| 0a39a75c GM |
1072 | The ruler is defined by the value of `fortran-column-ruler-fixed' in fixed |
| 1073 | format mode, and `fortran-column-ruler-tab' in TAB format mode. | |
| 1074 | The next key typed is executed unless it is SPC." | |
| 3dd63760 | 1075 | (interactive) |
| 60db3594 | 1076 | (momentary-string-display |
| 23029d77 JB |
1077 | (if indent-tabs-mode |
| 1078 | fortran-column-ruler-tab | |
| 1079 | fortran-column-ruler-fixed) | |
| 1080 | (save-excursion | |
| 60db3594 | 1081 | (beginning-of-line) |
| 23029d77 | 1082 | (if (eq (window-start (selected-window)) |
| 9d23c925 GM |
1083 | (window-point (selected-window))) |
| 1084 | (line-beginning-position 2) | |
| 23029d77 | 1085 | (point))) |
| 3dd63760 JB |
1086 | nil "Type SPC or any command to erase ruler.")) |
| 1087 | ||
| 1088 | (defun fortran-window-create () | |
| 694cf05e | 1089 | "Make the window `fortran-line-length' (default 72) columns wide. |
| fe668515 | 1090 | See also `fortran-window-create-momentarily'." |
| 3dd63760 | 1091 | (interactive) |
| b2523604 | 1092 | (let ((window-min-width 2)) |
| ca03b5a9 | 1093 | (unless (window-full-width-p) |
| 9d23c925 GM |
1094 | (enlarge-window-horizontally (- (frame-width) |
| 1095 | (window-width) 1))) | |
| b2523604 | 1096 | (let* ((window-edges (window-edges)) |
| 9d23c925 GM |
1097 | (scroll-bar-width (- (nth 2 window-edges) |
| 1098 | (car window-edges) | |
| 1099 | (window-width)))) | |
| 2d197ffb | 1100 | (split-window-right (+ fortran-line-length scroll-bar-width))) |
| b2523604 DL |
1101 | (other-window 1) |
| 1102 | (switch-to-buffer " fortran-window-extra" t) | |
| 1103 | (select-window (previous-window)))) | |
| 3dd63760 JB |
1104 | |
| 1105 | (defun fortran-window-create-momentarily (&optional arg) | |
| 694cf05e | 1106 | "Momentarily make the window `fortran-line-length' (default 72) columns wide. |
| 3dd63760 | 1107 | Optional ARG non-nil and non-unity disables the momentary feature. |
| fe668515 | 1108 | See also `fortran-window-create'." |
| 3dd63760 JB |
1109 | (interactive "p") |
| 1110 | (if (or (not arg) | |
| 9d23c925 | 1111 | (= arg 1)) |
| 3dd63760 | 1112 | (save-window-excursion |
| 9d23c925 GM |
1113 | (progn |
| 1114 | (condition-case nil | |
| 1115 | (fortran-window-create) | |
| 1116 | (error (error "No room for Fortran window"))) | |
| 1117 | (message "Type SPC to continue editing.") | |
| 1118 | (let ((char (read-event))) | |
| 1119 | (or (equal char ?\s) | |
| 1120 | (setq unread-command-events (list char)))))) | |
| 3dd63760 JB |
1121 | (fortran-window-create))) |
| 1122 | ||
| 1123 | (defun fortran-split-line () | |
| 1124 | "Break line at point and insert continuation marker and alignment." | |
| 5b04210c | 1125 | (interactive "*") |
| 3dd63760 | 1126 | (delete-horizontal-space) |
| 7dae727d | 1127 | (if (save-excursion |
| 9d23c925 GM |
1128 | (let ((pos (point))) |
| 1129 | (beginning-of-line) | |
| 1130 | (and (fortran-find-comment-start-skip 'all) | |
| 1131 | (< (match-beginning 0) pos)))) | |
| ff451e17 | 1132 | (insert ?\n (match-string 0)) |
| 23029d77 | 1133 | (if indent-tabs-mode |
| 9d23c925 | 1134 | (insert ?\n ?\t (fortran-numerical-continuation-char)) |
| 0a39a75c GM |
1135 | (insert "\n " fortran-continuation-string))) ; space after \n important |
| 1136 | (fortran-indent-line)) ; when cont string is C, c or * | |
| 1eb6bf70 DL |
1137 | |
| 1138 | (defun fortran-remove-continuation () | |
| 5b04210c GM |
1139 | "Delete any Fortran continuation characters at point. |
| 1140 | Returns t if anything actually deleted." | |
| 1141 | (when (looking-at "\\( \\{5\\}[^ 0\n]\\|\t[1-9]\\|&\\)") | |
| 1142 | (replace-match "") | |
| 1143 | (delete-indentation) | |
| 1144 | t)) | |
| 3dd63760 | 1145 | |
| 46d4d7bf DL |
1146 | (defun fortran-join-line (arg) |
| 1147 | "Join current line to the previous one and re-indent. | |
| 1148 | With a prefix argument, repeat this operation that many times. | |
| 1149 | If the prefix argument ARG is negative, join the next -ARG lines. | |
| 1150 | Continuation lines are correctly handled." | |
| 1151 | (interactive "*p") | |
| 7977773d | 1152 | (save-excursion |
| 46d4d7bf DL |
1153 | (when (> 0 arg) |
| 1154 | (setq arg (- arg)) | |
| 1155 | (forward-line arg)) | |
| 1156 | (while (not (zerop arg)) | |
| 1157 | (beginning-of-line) | |
| 1158 | (or (fortran-remove-continuation) | |
| 1159 | (delete-indentation)) | |
| 1160 | (setq arg (1- arg))) | |
| 7977773d DL |
1161 | (fortran-indent-line))) |
| 1162 | ||
| 3dd63760 | 1163 | (defun fortran-numerical-continuation-char () |
| b56eb7c9 | 1164 | "Return a digit for tab-digit style of continuation lines. |
| 5b04210c GM |
1165 | If previous line is a tab-digit continuation line, return that digit |
| 1166 | plus one, otherwise return 1. Zero not allowed." | |
| 3dd63760 JB |
1167 | (save-excursion |
| 1168 | (forward-line -1) | |
| 1169 | (if (looking-at "\t[1-9]") | |
| 9d23c925 | 1170 | (+ ?1 (% (- (char-after (1+ (point))) ?0) 9)) |
| 3dd63760 JB |
1171 | ?1))) |
| 1172 | ||
| 556dd629 | 1173 | (put 'fortran-electric-line-number 'delete-selection t) |
| 3dd63760 JB |
1174 | (defun fortran-electric-line-number (arg) |
| 1175 | "Self insert, but if part of a Fortran line number indent it automatically. | |
| 7977773d | 1176 | Auto-indent does not happen if a numeric ARG is used." |
| 5b04210c | 1177 | (interactive "*P") |
| 3dd63760 | 1178 | (if (or arg (not fortran-electric-line-number)) |
| 60db3594 | 1179 | (if arg |
| 9d23c925 GM |
1180 | (self-insert-command (prefix-numeric-value arg)) |
| 1181 | (self-insert-command 1)) | |
| 3dd63760 | 1182 | (if (or (and (= 5 (current-column)) |
| 9d23c925 GM |
1183 | (save-excursion |
| 1184 | (beginning-of-line) | |
| 5b04210c | 1185 | ;; In col 5 with only spaces to the left. |
| 9d23c925 GM |
1186 | (looking-at " \\{5\\}"))) |
| 1187 | (and (= (if indent-tabs-mode | |
| 1188 | fortran-minimum-statement-indent-tab | |
| 1189 | fortran-minimum-statement-indent-fixed) (current-column)) | |
| 5b04210c | 1190 | ;; In col 8 with a single tab to the left. |
| 9d23c925 GM |
1191 | (eq ?\t (char-after (line-beginning-position))) |
| 1192 | (not (or (eq last-command 'fortran-indent-line) | |
| 1193 | (eq last-command | |
| 1194 | 'fortran-indent-new-line)))) | |
| 1195 | (save-excursion | |
| 1196 | (re-search-backward "[^ \t0-9]" | |
| 1197 | (line-beginning-position) | |
| 1198 | t)) ; not a line number | |
| 1199 | (looking-at "[0-9]")) ; within a line number | |
| 1200 | (self-insert-command (prefix-numeric-value arg)) | |
| 3dd63760 | 1201 | (skip-chars-backward " \t") |
| 1ba983e8 | 1202 | (insert last-command-event) |
| 3dd63760 | 1203 | (fortran-indent-line)))) |
| 5b04210c | 1204 | |
| 3dd63760 | 1205 | \f |
| 823ab5da DL |
1206 | (defun fortran-check-end-prog-re () |
| 1207 | "Check a preliminary match against `fortran-end-prog-re'." | |
| 1208 | ;; Having got a possible match for the subprogram end, we need a | |
| 1209 | ;; match of whitespace, avoiding possible column 73+ stuff. | |
| 1210 | (save-match-data | |
| bd6cabcf | 1211 | (string-match "^\\s-*\\(\\'\\|\\s<\\)" |
| 9d23c925 GM |
1212 | (buffer-substring (match-end 0) |
| 1213 | (min (line-end-position) | |
| 1214 | (+ fortran-line-length | |
| 694cf05e | 1215 | (line-beginning-position))))))) |
| 823ab5da | 1216 | |
| 4a948dbf GM |
1217 | ;; This is more complex than first expected because the beginning of a |
| 1218 | ;; main program may be implicit (ie not marked by a PROGRAM statement). | |
| 1219 | ;; This would be fine (we could just go to bob in the absence of a match), | |
| 1220 | ;; except it need not even be the first subprogram in the file (eg it | |
| 1221 | ;; could follow a subroutine). Hence we have to search for END | |
| 1222 | ;; statements instead. | |
| 1223 | ;; cf fortran-beginning-of-block, f90-beginning-of-subprogram | |
| 1224 | ;; Note that unlike the latter, we don't have to worry about nested | |
| 1225 | ;; subprograms (?). | |
| 1226 | ;; FIXME push-mark? | |
| 7dae727d | 1227 | (defun fortran-beginning-of-subprogram () |
| b2523604 | 1228 | "Move point to the beginning of the current Fortran subprogram." |
| 3dd63760 | 1229 | (interactive) |
| 4a948dbf GM |
1230 | (let ((case-fold-search t)) |
| 1231 | ;; If called already at the start of subprogram, go to the previous. | |
| 1232 | (beginning-of-line (if (bolp) 0 1)) | |
| 1233 | (save-match-data | |
| 1234 | (or (looking-at fortran-start-prog-re) | |
| 1235 | ;; This leaves us at bob if before the first subprogram. | |
| 1236 | (eq (fortran-previous-statement) 'first-statement) | |
| 1237 | (if (or (catch 'ok | |
| 1238 | (while (re-search-backward fortran-end-prog-re nil 'move) | |
| 1239 | (if (fortran-check-end-prog-re) (throw 'ok t)))) | |
| 1240 | ;; If the search failed, must be at bob. | |
| 1241 | ;; First code line is the start of the subprogram. | |
| 1242 | ;; FIXME use a more rigorous test, cf fortran-next-statement? | |
| 1243 | ;; Though that needs to handle continuations too. | |
| 1244 | (not (looking-at "^\\([ \t]*[0-9]\\|[ \t]+[^!#]\\)"))) | |
| 1245 | (fortran-next-statement)))))) | |
| 1246 | ||
| 1247 | ;; This is simpler than f-beginning-of-s because the end of a | |
| 1248 | ;; subprogram is never implicit. | |
| 7dae727d | 1249 | (defun fortran-end-of-subprogram () |
| b2523604 | 1250 | "Move point to the end of the current Fortran subprogram." |
| 3dd63760 | 1251 | (interactive) |
| 4a948dbf GM |
1252 | (let ((case-fold-search t)) |
| 1253 | (beginning-of-line) | |
| 1254 | (save-match-data | |
| 1255 | (while (and (re-search-forward fortran-end-prog-re nil 'move) | |
| 1256 | (not (fortran-check-end-prog-re)))) | |
| 1257 | (forward-line)))) | |
| 3dd63760 | 1258 | |
| 3dd63760 | 1259 | (defun fortran-previous-statement () |
| b2523604 | 1260 | "Move point to beginning of the previous Fortran statement. |
| 8edfcc7d GM |
1261 | Returns 'first-statement if that statement is the first |
| 1262 | non-comment Fortran statement in the file, and nil otherwise. | |
| 5a73972b | 1263 | Directive lines are treated as comments." |
| 3dd63760 JB |
1264 | (interactive) |
| 1265 | (let (not-first-statement continue-test) | |
| 1266 | (beginning-of-line) | |
| 1267 | (setq continue-test | |
| 9d23c925 GM |
1268 | (and |
| 1269 | (not (looking-at fortran-comment-line-start-skip)) | |
| 5a73972b | 1270 | (not (looking-at fortran-directive-re)) |
| 9d23c925 GM |
1271 | (or (looking-at |
| 1272 | (concat "[ \t]*" | |
| 1273 | (regexp-quote fortran-continuation-string))) | |
| 1274 | (looking-at " \\{5\\}[^ 0\n]\\|\t[1-9]")))) | |
| 5b04210c | 1275 | (while (and (setq not-first-statement (zerop (forward-line -1))) |
| 9d23c925 | 1276 | (or (looking-at fortran-comment-line-start-skip) |
| 5a73972b | 1277 | (looking-at fortran-directive-re) |
| 98110b1f GM |
1278 | (looking-at |
| 1279 | (concat "[ \t]*" | |
| 1280 | (regexp-quote fortran-continuation-string))) | |
| 9d23c925 GM |
1281 | (looking-at "[ \t]*$\\| \\{5\\}[^ 0\n]\\|\t[1-9]") |
| 1282 | (looking-at (concat "[ \t]*" comment-start-skip))))) | |
| 3dd63760 | 1283 | (cond ((and continue-test |
| 9d23c925 GM |
1284 | (not not-first-statement)) |
| 1285 | (message "Incomplete continuation statement.")) | |
| 1286 | (continue-test | |
| 1287 | (fortran-previous-statement)) | |
| 1288 | ((not not-first-statement) | |
| 1289 | 'first-statement)))) | |
| 3dd63760 JB |
1290 | |
| 1291 | (defun fortran-next-statement () | |
| b2523604 | 1292 | "Move point to beginning of the next Fortran statement. |
| 8edfcc7d GM |
1293 | Returns 'last-statement if that statement is the last |
| 1294 | non-comment Fortran statement in the file, and nil otherwise. | |
| 5a73972b | 1295 | Directive lines are treated as comments." |
| 3dd63760 JB |
1296 | (interactive) |
| 1297 | (let (not-last-statement) | |
| 1298 | (beginning-of-line) | |
| b8cbdf43 | 1299 | (while (and (setq not-last-statement |
| 9d23c925 GM |
1300 | (and (zerop (forward-line 1)) |
| 1301 | (not (eobp)))) | |
| 1302 | (or (looking-at fortran-comment-line-start-skip) | |
| 5a73972b | 1303 | (looking-at fortran-directive-re) |
| 9d23c925 GM |
1304 | (looking-at "[ \t]*$\\| [^ 0\n]\\|\t[1-9]") |
| 1305 | (looking-at (concat "[ \t]*" comment-start-skip))))) | |
| 3dd63760 | 1306 | (if (not not-last-statement) |
| 9d23c925 | 1307 | 'last-statement))) |
| 5b04210c | 1308 | |
| 8cb8832f GM |
1309 | (defun fortran-looking-at-if-then () |
| 1310 | "Return non-nil if at the start of a line with an IF ... THEN statement." | |
| 1311 | ;; cf f90-looking-at-if-then. | |
| 1312 | (let ((p (point)) | |
| 1313 | (i (fortran-beginning-if))) | |
| 1314 | (if i | |
| 1315 | (save-excursion | |
| 1316 | (goto-char i) | |
| 9b026d9f | 1317 | (= (line-beginning-position) p))))) |
| 8cb8832f GM |
1318 | |
| 1319 | ;; Used in hs-special-modes-alist. | |
| 1320 | (defun fortran-end-of-block (&optional num) | |
| 1321 | "Move point forward to the end of the current code block. | |
| 1322 | With optional argument NUM, go forward that many balanced blocks. | |
| 1323 | If NUM is negative, go backward to the start of a block. Does | |
| 1324 | not check for consistency of block types. Interactively, pushes | |
| 1325 | mark before moving point." | |
| 1326 | (interactive "p") | |
| d47afbc0 | 1327 | (if (called-interactively-p 'any) (push-mark (point) t)) |
| 8cb8832f GM |
1328 | (and num (< num 0) (fortran-beginning-of-block (- num))) |
| 1329 | (let ((case-fold-search t) | |
| 1330 | (count (or num 1))) | |
| 1331 | (end-of-line) | |
| 1332 | (while (and (> count 0) | |
| 1333 | (re-search-forward | |
| 1334 | (concat "\\(" fortran-blocks-re | |
| 1335 | (if fortran-check-all-num-for-matching-do | |
| 1336 | "\\|^[ \t]*[0-9]+" "") | |
| 1337 | "\\|continue\\|end\\)\\>") | |
| 1338 | nil 'move)) | |
| 1339 | (beginning-of-line) | |
| 1340 | (if (if (looking-at (concat "^[0-9 \t]*" fortran-if-start-re)) | |
| 1341 | (fortran-looking-at-if-then) | |
| 1342 | (looking-at fortran-start-block-re)) | |
| 1343 | (setq count (1+ count)) | |
| 1344 | (if (or (looking-at fortran-end-block-re) | |
| 1345 | (and (or (looking-at "^[0-9 \t]*continue") | |
| 1346 | (and fortran-check-all-num-for-matching-do | |
| 1347 | (looking-at "[ \t]*[0-9]+"))) | |
| 1348 | (fortran-check-for-matching-do))) | |
| 1349 | (setq count (1- count)))) | |
| 1350 | (end-of-line)) | |
| 1351 | (if (> count 0) (error "Missing block end")))) | |
| 1352 | ||
| 1353 | (defun fortran-beginning-of-block (&optional num) | |
| 1354 | "Move point backwards to the start of the current code block. | |
| 1355 | With optional argument NUM, go backward that many balanced | |
| 1356 | blocks. If NUM is negative, go forward to the end of a block. | |
| 1357 | Does not check for consistency of block types. Interactively, | |
| 1358 | pushes mark before moving point." | |
| 1359 | (interactive "p") | |
| d47afbc0 | 1360 | (if (called-interactively-p 'any) (push-mark (point) t)) |
| 8cb8832f GM |
1361 | (and num (< num 0) (fortran-end-of-block (- num))) |
| 1362 | (let ((case-fold-search t) | |
| 1363 | (count (or num 1))) | |
| 1364 | (beginning-of-line) | |
| 1365 | (while (and (> count 0) | |
| 1366 | (re-search-backward | |
| 1367 | (concat "\\(" fortran-blocks-re | |
| 1368 | (if fortran-check-all-num-for-matching-do | |
| 1369 | "\\|^[ \t]*[0-9]+" "") | |
| 1370 | "\\|continue\\|end\\)\\>") | |
| 1371 | nil 'move)) | |
| 1372 | (beginning-of-line) | |
| 1373 | (if (if (looking-at (concat "^[0-9 \t]*" fortran-if-start-re)) | |
| 1374 | (fortran-looking-at-if-then) | |
| 1375 | (looking-at fortran-start-block-re)) | |
| 1376 | (setq count (1- count)) | |
| 1377 | (if (or (looking-at fortran-end-block-re) | |
| 1378 | (and (or (looking-at "^[0-9 \t]*continue") | |
| 1379 | (and fortran-check-all-num-for-matching-do | |
| 1380 | (looking-at "[ \t]*[0-9]+"))) | |
| 1381 | (fortran-check-for-matching-do))) | |
| 1382 | (setq count (1+ count))))) | |
| 1383 | ;; Includes an un-named main program block. | |
| 1384 | (if (> count 0) (error "Missing block start")))) | |
| 1385 | ||
| 3dd63760 | 1386 | \f |
| 7dae727d DL |
1387 | (defun fortran-blink-match (regex keyword find-begin) |
| 1388 | "From a line matching REGEX, blink matching KEYWORD statement line. | |
| 1389 | Use function FIND-BEGIN to match it." | |
| 1eb6bf70 | 1390 | (let ((top-of-window (window-start)) |
| 9d23c925 GM |
1391 | (end-point (point)) |
| 1392 | (case-fold-search t) | |
| 1393 | matching | |
| 1394 | message) | |
| 5b04210c GM |
1395 | (when (save-excursion |
| 1396 | (beginning-of-line) | |
| 1397 | (skip-chars-forward " \t0-9") | |
| 1398 | (looking-at regex)) | |
| 1399 | (if (not (setq matching (funcall find-begin))) | |
| 1400 | (setq message (concat "No matching " keyword ".")) | |
| 1401 | (if (< matching top-of-window) | |
| 1402 | (save-excursion | |
| 1403 | (goto-char matching) | |
| 1404 | (beginning-of-line) | |
| 1405 | (setq message | |
| 1406 | (concat "Matches " | |
| 1407 | (buffer-substring (point) | |
| 1408 | (line-end-position))))))) | |
| 1409 | (if message | |
| 1410 | (message "%s" message) | |
| 1411 | (goto-char matching) | |
| 7533f3b5 | 1412 | (sit-for blink-matching-delay) |
| 5b04210c | 1413 | (goto-char end-point))))) |
| 7dae727d DL |
1414 | |
| 1415 | (defun fortran-blink-matching-if () | |
| 1416 | "From an ENDIF or ELSE statement, blink the matching IF statement." | |
| 1417 | (fortran-blink-match "e\\(nd[ \t]*if\\|lse\\([ \t]*if\\)?\\)\\b" | |
| 9d23c925 | 1418 | "if" #'fortran-beginning-if)) |
| 947388af RS |
1419 | |
| 1420 | (defun fortran-blink-matching-do () | |
| 45cf60ae | 1421 | "From an ENDDO statement, blink the matching DO or DO WHILE statement." |
| 7dae727d | 1422 | (fortran-blink-match "end[ \t]*do\\b" "do" #'fortran-beginning-do)) |
| c5af0a18 RS |
1423 | |
| 1424 | (defun fortran-mark-do () | |
| 60db3594 | 1425 | "Put mark at end of Fortran DO [WHILE]-ENDDO construct, point at beginning. |
| c5af0a18 RS |
1426 | The marks are pushed." |
| 1427 | (interactive) | |
| 1428 | (let (enddo-point do-point) | |
| 1429 | (if (setq enddo-point (fortran-end-do)) | |
| 1430 | (if (not (setq do-point (fortran-beginning-do))) | |
| 1431 | (message "No matching do.") | |
| c5af0a18 RS |
1432 | (goto-char enddo-point) |
| 1433 | (push-mark) | |
| 1434 | (goto-char do-point))))) | |
| 1435 | ||
| 1436 | (defun fortran-end-do () | |
| 45cf60ae DL |
1437 | "Search forward for first unmatched ENDDO. |
| 1438 | Return point or nil." | |
| 1eb6bf70 DL |
1439 | (let ((case-fold-search t)) |
| 1440 | (if (save-excursion (beginning-of-line) | |
| 9d23c925 GM |
1441 | (skip-chars-forward " \t0-9") |
| 1442 | (looking-at "end[ \t]*do\\b")) | |
| 1443 | ;; Sitting on one. | |
| 1444 | (match-beginning 0) | |
| 1eb6bf70 DL |
1445 | ;; Search for one. |
| 1446 | (save-excursion | |
| 9d23c925 GM |
1447 | (let ((count 1)) |
| 1448 | (while (and (not (zerop count)) | |
| 1449 | (not (eq (fortran-next-statement) 'last-statement)) | |
| 1450 | ;; Keep local to subprogram. | |
| 1451 | (not (and (looking-at fortran-end-prog-re) | |
| 1452 | (fortran-check-end-prog-re)))) | |
| 1453 | (skip-chars-forward " \t0-9") | |
| 1454 | (cond ((looking-at "end[ \t]*do\\b") | |
| 1455 | (setq count (1- count))) | |
| 1456 | ((looking-at | |
| 1457 | "\\(\\(\\sw\\|\\s_\\)+:[ \t]*\\)?do[ \t]+[^0-9]") | |
| 1458 | (setq count (1+ count))))) | |
| 1459 | (and (zerop count) | |
| 1460 | ;; All pairs accounted for. | |
| 1461 | (point))))))) | |
| c5af0a18 RS |
1462 | |
| 1463 | (defun fortran-beginning-do () | |
| 45cf60ae | 1464 | "Search backwards for first unmatched DO [WHILE]. |
| 09e80d9f | 1465 | Return point or nil. Ignores labeled DO loops (ie DO 10 ... 10 CONTINUE)." |
| 845d331e GM |
1466 | (let ((case-fold-search t) |
| 1467 | (dostart-re "\\(\\(\\sw\\|\\s_\\)+:[ \t]*\\)?do[ \t]+[^0-9]")) | |
| 7dae727d | 1468 | (if (save-excursion |
| 9d23c925 GM |
1469 | (beginning-of-line) |
| 1470 | (skip-chars-forward " \t0-9") | |
| 1471 | (looking-at dostart-re)) | |
| 1472 | ;; Sitting on one. | |
| 1473 | (match-beginning 0) | |
| 1eb6bf70 DL |
1474 | ;; Search for one. |
| 1475 | (save-excursion | |
| 9d23c925 GM |
1476 | (let ((count 1)) |
| 1477 | (while (and (not (zerop count)) | |
| 1478 | (not (eq (fortran-previous-statement) 'first-statement)) | |
| 1479 | ;; Keep local to subprogram. | |
| 1480 | (not (and (looking-at fortran-end-prog-re) | |
| 1481 | (fortran-check-end-prog-re)))) | |
| 1482 | (skip-chars-forward " \t0-9") | |
| 1483 | (cond ((looking-at dostart-re) | |
| 1484 | (setq count (1- count))) | |
| 09e80d9f | 1485 | ;; Note labeled loop ends not considered. |
| 9d23c925 GM |
1486 | ((looking-at "end[ \t]*do\\b") |
| 1487 | (setq count (1+ count))))) | |
| 1488 | (and (zerop count) | |
| 1489 | ;; All pairs accounted for. | |
| 1490 | (point))))))) | |
| c5af0a18 RS |
1491 | |
| 1492 | (defun fortran-mark-if () | |
| 1493 | "Put mark at end of Fortran IF-ENDIF construct, point at beginning. | |
| 1494 | The marks are pushed." | |
| 1495 | (interactive) | |
| 1496 | (let (endif-point if-point) | |
| 1497 | (if (setq endif-point (fortran-end-if)) | |
| 1498 | (if (not (setq if-point (fortran-beginning-if))) | |
| 1499 | (message "No matching if.") | |
| 1500 | ;; Set mark, move point. | |
| 1501 | (goto-char endif-point) | |
| 1502 | (push-mark) | |
| 1503 | (goto-char if-point))))) | |
| 1504 | ||
| 1505 | (defun fortran-end-if () | |
| 45cf60ae DL |
1506 | "Search forwards for first unmatched ENDIF. |
| 1507 | Return point or nil." | |
| 1eb6bf70 DL |
1508 | (let ((case-fold-search t)) |
| 1509 | (if (save-excursion (beginning-of-line) | |
| 9d23c925 GM |
1510 | (skip-chars-forward " \t0-9") |
| 1511 | (looking-at "end[ \t]*if\\b")) | |
| 1512 | ;; Sitting on one. | |
| 1513 | (match-beginning 0) | |
| 1eb6bf70 DL |
1514 | ;; Search for one. The point has been already been moved to first |
| 1515 | ;; letter on line but this should not cause troubles. | |
| 1516 | (save-excursion | |
| 9d23c925 GM |
1517 | (let ((count 1)) |
| 1518 | (while (and (not (zerop count)) | |
| 1519 | (not (eq (fortran-next-statement) 'last-statement)) | |
| 1520 | ;; Keep local to subprogram. | |
| 1521 | (not (and (looking-at fortran-end-prog-re) | |
| 1522 | (fortran-check-end-prog-re)))) | |
| 1523 | (skip-chars-forward " \t0-9") | |
| 1524 | (cond ((looking-at "end[ \t]*if\\b") | |
| 1525 | (setq count (1- count))) | |
| 1526 | ((looking-at fortran-if-start-re) | |
| 1527 | (save-excursion | |
| 1528 | (if (or | |
| 1529 | (looking-at ".*)[ \t]*then\\b[ \t]*[^ \t(=a-z0-9]") | |
| 1530 | (let (then-test) ; multi-line if-then | |
| 1531 | (while | |
| 1532 | (and | |
| 1533 | (zerop (forward-line 1)) | |
| 1534 | ;; Search forward for then. | |
| 1535 | (looking-at " \\{5\\}[^ 0\n]\\|\t[1-9]") | |
| 1536 | (not | |
| 1537 | (setq then-test | |
| 1538 | (looking-at | |
| 1539 | ".*then\\b[ \t]*[^ \t(=a-z0-9]"))))) | |
| 1540 | then-test)) | |
| 1541 | (setq count (1+ count))))))) | |
| 1542 | (and (zerop count) | |
| 1543 | ;; All pairs accounted for. | |
| 1544 | (point))))))) | |
| c5af0a18 RS |
1545 | |
| 1546 | (defun fortran-beginning-if () | |
| 45cf60ae DL |
1547 | "Search backwards for first unmatched IF-THEN. |
| 1548 | Return point or nil." | |
| 1eb6bf70 DL |
1549 | (let ((case-fold-search t)) |
| 1550 | (if (save-excursion | |
| 9d23c925 GM |
1551 | ;; May be sitting on multi-line if-then statement, first |
| 1552 | ;; move to beginning of current statement. Note: | |
| 1553 | ;; `fortran-previous-statement' moves to previous statement | |
| 1554 | ;; *unless* current statement is first one. Only move | |
| 1555 | ;; forward if not first-statement. | |
| 1556 | (if (not (eq (fortran-previous-statement) 'first-statement)) | |
| 1557 | (fortran-next-statement)) | |
| 1558 | (skip-chars-forward " \t0-9") | |
| 1559 | (and | |
| 1560 | (looking-at fortran-if-start-re) | |
| 1561 | (save-match-data | |
| 1562 | (or (looking-at ".*)[ \t]*then\\b[ \t]*[^ \t(=a-z0-9]") | |
| 1563 | ;; Multi-line if-then. | |
| 1564 | (let (then-test) | |
| 1565 | (while | |
| 5b04210c | 1566 | (and (zerop (forward-line 1)) |
| 9d23c925 GM |
1567 | ;; Search forward for then. |
| 1568 | (looking-at " \\{5\\}[^ 0\n]\\|\t[1-9]") | |
| 1569 | (not | |
| 1570 | (setq then-test | |
| 1571 | (looking-at | |
| 1572 | ".*then\\b[ \t]*[^ \t(=a-z0-9]"))))) | |
| 1573 | then-test))))) | |
| 1574 | ;; Sitting on one. | |
| 1575 | (match-beginning 0) | |
| 1eb6bf70 DL |
1576 | ;; Search for one. |
| 1577 | (save-excursion | |
| 9d23c925 GM |
1578 | (let ((count 1)) |
| 1579 | (while (and (not (zerop count)) | |
| 1580 | (not (eq (fortran-previous-statement) 'first-statement)) | |
| 1581 | ;; Keep local to subprogram. | |
| 1582 | (not (and (looking-at fortran-end-prog-re) | |
| 1583 | (fortran-check-end-prog-re)))) | |
| 1584 | (skip-chars-forward " \t0-9") | |
| 1585 | (cond ((looking-at fortran-if-start-re) | |
| 1586 | (save-excursion | |
| 1587 | (if (or | |
| 1588 | (looking-at ".*)[ \t]*then\\b[ \t]*[^ \t(=a-z0-9]") | |
| 1589 | (let (then-test) ; multi-line if-then | |
| 1590 | (while | |
| 1591 | (and | |
| 1592 | (zerop (forward-line 1)) | |
| 1593 | ;; Search forward for then. | |
| 1594 | (looking-at " \\{5\\}[^ 0\n]\\|\t[1-9]") | |
| 1595 | (not | |
| 1596 | (setq then-test | |
| 1597 | (looking-at | |
| 1598 | (concat ".*then\\b[ \t]*" | |
| 1599 | "[^ \t(=a-z0-9]")))))) | |
| 1600 | then-test)) | |
| 1601 | (setq count (1- count))))) | |
| 1602 | ((looking-at "end[ \t]*if\\b") | |
| 1603 | (setq count (1+ count))))) | |
| 1604 | (and (zerop count) | |
| 1605 | ;; All pairs accounted for. | |
| 1606 | (point))))))) | |
| 5b04210c | 1607 | |
| 3dd63760 JB |
1608 | \f |
| 1609 | (defun fortran-indent-line () | |
| 7977773d | 1610 | "Indent current Fortran line based on its contents and on previous lines." |
| 5b04210c | 1611 | (interactive "*") |
| 1eb6bf70 | 1612 | (let ((cfi (fortran-calculate-indent))) |
| 3dd63760 JB |
1613 | (save-excursion |
| 1614 | (beginning-of-line) | |
| 1615 | (if (or (not (= cfi (fortran-current-line-indentation))) | |
| 9d23c925 GM |
1616 | (and (re-search-forward "^[ \t]*[0-9]+" (+ (point) 4) t) |
| 1617 | (not (fortran-line-number-indented-correctly-p)))) | |
| 1618 | (fortran-indent-to-column cfi) | |
| 1619 | (beginning-of-line) | |
| 1620 | (if (fortran-find-comment-start-skip) | |
| 1621 | (fortran-indent-comment)))) | |
| 3dd63760 JB |
1622 | ;; Never leave point in left margin. |
| 1623 | (if (< (current-column) cfi) | |
| 9d23c925 | 1624 | (move-to-column cfi)) |
| 5b04210c GM |
1625 | (and auto-fill-function |
| 1626 | (> (save-excursion (end-of-line) (current-column)) | |
| 1627 | fill-column) | |
| 1628 | (save-excursion | |
| 1629 | (end-of-line) | |
| 1630 | (fortran-fill))) | |
| 1631 | (when fortran-blink-matching-if | |
| 1632 | (fortran-blink-matching-if) | |
| 1633 | (fortran-blink-matching-do)))) | |
| 3dd63760 | 1634 | |
| 315aa1de | 1635 | (defun fortran-auto-fill () |
| 5b04210c | 1636 | "Function to use for `normal-auto-fill-function' in Fortran mode." |
| 315aa1de DL |
1637 | (if (> (current-column) (current-fill-column)) |
| 1638 | (let ((cfi (fortran-calculate-indent))) | |
| 9d23c925 GM |
1639 | (save-excursion |
| 1640 | (beginning-of-line) | |
| 1641 | (if (or (not (= cfi (fortran-current-line-indentation))) | |
| 1642 | (and (re-search-forward "^[ \t]*[0-9]+" | |
| 1643 | (+ (point) 4) t) | |
| 1644 | (not (fortran-line-number-indented-correctly-p)))) | |
| 1645 | (fortran-indent-to-column cfi) | |
| 1646 | (beginning-of-line) | |
| 1647 | (if (fortran-find-comment-start-skip) | |
| 1648 | (fortran-indent-comment)))) | |
| 1649 | (fortran-fill) | |
| 1650 | ;; Never leave point in left margin. | |
| 1651 | (if (< (current-column) cfi) | |
| 1652 | (move-to-column cfi))))) | |
| 315aa1de | 1653 | |
| 5aca2648 DL |
1654 | ;; Historically this was a separate function which advertised itself |
| 1655 | ;; as reindenting but only did so where `most likely to be necessary'. | |
| 1656 | (defalias 'fortran-indent-new-line 'reindent-then-newline-and-indent) | |
| b8cbdf43 | 1657 | |
| 3dd63760 | 1658 | (defun fortran-indent-subprogram () |
| 5b04210c GM |
1659 | "Properly indent the Fortran subprogram containing point." |
| 1660 | (interactive "*") | |
| 3dd63760 | 1661 | (save-excursion |
| 7a7db8e5 | 1662 | (mark-defun) |
| c4c42b2e DL |
1663 | (message "Indenting subprogram...") |
| 1664 | (indent-region (point) (mark) nil)) | |
| 3dd63760 JB |
1665 | (message "Indenting subprogram...done.")) |
| 1666 | ||
| 1eb6bf70 | 1667 | (defun fortran-calculate-indent () |
| b8cbdf43 | 1668 | "Calculates the Fortran indent column based on previous lines." |
| 3dd63760 | 1669 | (let (icol first-statement (case-fold-search t) |
| 9d23c925 GM |
1670 | (fortran-minimum-statement-indent |
| 1671 | (if indent-tabs-mode | |
| 1672 | fortran-minimum-statement-indent-tab | |
| 1673 | fortran-minimum-statement-indent-fixed))) | |
| 3dd63760 JB |
1674 | (save-excursion |
| 1675 | (setq first-statement (fortran-previous-statement)) | |
| 1676 | (if first-statement | |
| 9d23c925 | 1677 | (setq icol fortran-minimum-statement-indent) |
| 98110b1f GM |
1678 | (if (= (point) (point-min)) |
| 1679 | (setq icol fortran-minimum-statement-indent) | |
| 1680 | (setq icol (fortran-current-line-indentation))) | |
| 1681 | (skip-chars-forward " \t0-9") | |
| 1682 | (cond ((looking-at "\\(\\(\\sw\\|\\s_\\)+:[ \t]*\\)?if[ \t]*(") | |
| 1683 | (if (or (looking-at ".*)[ \t]*then\\b[ \t]*[^ \t_$(=a-z0-9]") | |
| 9d23c925 | 1684 | (let (then-test) ; multi-line if-then |
| 5b04210c | 1685 | (while (and (zerop (forward-line 1)) |
| 0a39a75c | 1686 | ;; Search forward for then. |
| 98110b1f GM |
1687 | (looking-at " \\{5\\}[^ 0\n]\\|\t[1-9]") |
| 1688 | (not (setq then-test | |
| 1689 | (looking-at | |
| 1690 | ".*then\\b[ \t]\ | |
| b8cbdf43 | 1691 | *[^ \t_$(=a-z0-9]"))))) |
| 98110b1f GM |
1692 | then-test)) |
| 1693 | (setq icol (+ icol fortran-if-indent)))) | |
| 1694 | ((looking-at "else\\(if\\)?\\b") | |
| 1695 | (setq icol (+ icol fortran-if-indent))) | |
| 1696 | ((looking-at "select[ \t]*case[ \t](.*)") | |
| 1697 | (setq icol (+ icol fortran-if-indent))) | |
| 1698 | ((looking-at "case[ \t]*(.*)") | |
| 1699 | (setq icol (+ icol fortran-if-indent))) | |
| 1700 | ((looking-at "case[ \t]*default\\b") | |
| 1701 | (setq icol (+ icol fortran-if-indent))) | |
| 1702 | ((looking-at "\\(otherwise\\|else[ \t]*where\\)\\b") | |
| 1703 | (setq icol (+ icol fortran-if-indent))) | |
| 1704 | ((looking-at "where[ \t]*(.*)[ \t]*\n") | |
| 1705 | (setq icol (+ icol fortran-if-indent))) | |
| 1706 | ((looking-at "do\\b") | |
| 1707 | (setq icol (+ icol fortran-do-indent))) | |
| 1708 | ((looking-at | |
| 1709 | "\\(structure\\|union\\|map\\|interface\\)\ | |
| 7dae727d | 1710 | \\b[ \t]*[^ \t=(a-z]") |
| 98110b1f GM |
1711 | (setq icol (+ icol fortran-structure-indent))) |
| 1712 | ((and (looking-at fortran-end-prog-re1) | |
| 1713 | (fortran-check-end-prog-re)) | |
| 0a39a75c | 1714 | ;; Previous END resets indent to minimum. |
| dd08226a GM |
1715 | (setq icol fortran-minimum-statement-indent)) |
| 1716 | ;; Previous statement was a numbered DO loop without a | |
| 1717 | ;; closing CONTINUE or END DO, so we indented the | |
| 1718 | ;; terminator like the loop body. | |
| 1719 | ((and fortran-check-all-num-for-matching-do | |
| 1720 | (not (looking-at "\\(continue\\|end[ \t]*do\\)\\>")) | |
| 1721 | (progn | |
| 1722 | (beginning-of-line) | |
| 1723 | (and (looking-at "[ \t]*[0-9]+") | |
| 1724 | (fortran-check-for-matching-do)))) | |
| 1725 | (setq icol (- icol fortran-do-indent)))))) | |
| 3dd63760 JB |
1726 | (save-excursion |
| 1727 | (beginning-of-line) | |
| 1728 | (cond ((looking-at "[ \t]*$")) | |
| 5a73972b | 1729 | ;; Check for directive before comment, so as not to indent. |
| 9d23c925 GM |
1730 | ((looking-at fortran-directive-re) |
| 1731 | (setq fortran-minimum-statement-indent 0 icol 0)) | |
| 1732 | ((looking-at fortran-comment-line-start-skip) | |
| 1733 | (cond ((eq fortran-comment-indent-style 'relative) | |
| 1734 | (setq icol (+ icol fortran-comment-line-extra-indent))) | |
| 1735 | ((eq fortran-comment-indent-style 'fixed) | |
| 1736 | (setq icol (+ fortran-minimum-statement-indent | |
| 1737 | fortran-comment-line-extra-indent)))) | |
| 1738 | (setq fortran-minimum-statement-indent 0)) | |
| 1739 | ((or (looking-at (concat "[ \t]*" | |
| 1740 | (regexp-quote | |
| 1741 | fortran-continuation-string))) | |
| 1742 | (looking-at " \\{5\\}[^ 0\n]\\|\t[1-9]")) | |
| 98110b1f GM |
1743 | (skip-chars-forward " \t") |
| 1744 | ;; Do not introduce extra whitespace into a broken string. | |
| 1745 | (setq icol | |
| 1746 | (if (fortran-is-in-string-p (point)) | |
| 1747 | 6 | |
| 1748 | (+ icol fortran-continuation-indent)))) | |
| 9d23c925 | 1749 | (first-statement) |
| dd08226a GM |
1750 | ;; The terminating statement is actually part of the |
| 1751 | ;; loop body, so unless it is a CONTINUE or END DO, we | |
| 1752 | ;; indent it like the loop body (see above). | |
| 9d23c925 | 1753 | ((and fortran-check-all-num-for-matching-do |
| dd08226a GM |
1754 | (looking-at "[ \t]*[0-9]+[ \t]*\ |
| 1755 | \\(continue\\|end[ \t]*do\\)\\>") | |
| 9d23c925 GM |
1756 | (fortran-check-for-matching-do)) |
| 1757 | (setq icol (- icol fortran-do-indent))) | |
| 1758 | (t | |
| 1759 | (skip-chars-forward " \t0-9") | |
| 1760 | (cond ((looking-at "end[ \t]*\\(if\\|select\\|where\\)\\b") | |
| 1761 | (setq icol (- icol fortran-if-indent))) | |
| 1762 | ((looking-at "else\\(if\\)?\\b") | |
| 1763 | (setq icol (- icol fortran-if-indent))) | |
| 1eb6bf70 | 1764 | ((looking-at "case[ \t]*\\((.*)\\|default\\>\\)") |
| 9d23c925 GM |
1765 | (setq icol (- icol fortran-if-indent))) |
| 1766 | ((looking-at "\\(otherwise\\|else[ \t]*where\\)\\b") | |
| 1767 | (setq icol (- icol fortran-if-indent))) | |
| 1768 | ((and (looking-at "continue\\b") | |
| 1769 | (fortran-check-for-matching-do)) | |
| 1770 | (setq icol (- icol fortran-do-indent))) | |
| 1771 | ((looking-at "end[ \t]*do\\b") | |
| 1772 | (setq icol (- icol fortran-do-indent))) | |
| 1773 | ((looking-at "end[ \t]*\ | |
| 5a8d870b | 1774 | \\(structure\\|union\\|map\\|interface\\)\\b[ \t]*[^ \t=(a-z]") |
| 9d23c925 GM |
1775 | (setq icol (- icol fortran-structure-indent))) |
| 1776 | ((and (looking-at fortran-end-prog-re1) | |
| 1777 | (fortran-check-end-prog-re) | |
| 1778 | (not (= icol fortran-minimum-statement-indent))) | |
| 1779 | (message "Warning: `end' not in column %d. Probably\ | |
| 3dd63760 JB |
1780 | an unclosed block." fortran-minimum-statement-indent)))))) |
| 1781 | (max fortran-minimum-statement-indent icol))) | |
| 5b04210c | 1782 | |
| 3dd63760 JB |
1783 | \f |
| 1784 | (defun fortran-current-line-indentation () | |
| 1785 | "Indentation of current line, ignoring Fortran line number or continuation. | |
| 1786 | This is the column position of the first non-whitespace character | |
| 1787 | aside from the line number and/or column 5/8 line-continuation character. | |
| 1788 | For comment lines, returns indentation of the first | |
| 1789 | non-indentation text within the comment." | |
| 1790 | (save-excursion | |
| 1791 | (beginning-of-line) | |
| 7dae727d | 1792 | (cond ((looking-at fortran-comment-line-start-skip) |
| 9d23c925 GM |
1793 | (goto-char (match-end 0)) |
| 1794 | (skip-chars-forward | |
| 1795 | (if (stringp fortran-comment-indent-char) | |
| 1796 | fortran-comment-indent-char | |
| 1797 | (char-to-string fortran-comment-indent-char)))) | |
| 1798 | ((or (looking-at " \\{5\\}[^ 0\n]\\|\t[1-9]")) | |
| 1799 | (goto-char (match-end 0))) | |
| 1800 | (t | |
| 1801 | ;; Move past line number. | |
| 1802 | (skip-chars-forward "[ \t0-9]"))) | |
| 3dd63760 JB |
1803 | ;; Move past whitespace. |
| 1804 | (skip-chars-forward " \t") | |
| 1805 | (current-column))) | |
| 1806 | ||
| 1807 | (defun fortran-indent-to-column (col) | |
| 5b04210c | 1808 | "Indent current line to column COL. |
| 3dd63760 JB |
1809 | notes: 1) A non-zero/non-blank character in column 5 indicates a continuation |
| 1810 | line, and this continuation character is retained on indentation; | |
| b8cbdf43 RS |
1811 | 2) If `fortran-continuation-string' is the first non-whitespace |
| 1812 | character, this is a continuation line; | |
| 3dd63760 JB |
1813 | 3) A non-continuation line which has a number as the first |
| 1814 | non-whitespace character is a numbered line. | |
| b8cbdf43 | 1815 | 4) A TAB followed by a digit indicates a continuation line." |
| 3dd63760 JB |
1816 | (save-excursion |
| 1817 | (beginning-of-line) | |
| 7dae727d | 1818 | (if (looking-at fortran-comment-line-start-skip) |
| 9d23c925 GM |
1819 | (if fortran-comment-indent-style |
| 1820 | (let* ((char (if (stringp fortran-comment-indent-char) | |
| 1821 | (aref fortran-comment-indent-char 0) | |
| 1822 | fortran-comment-indent-char)) | |
| 1823 | (chars (string ?\s ?\t char))) | |
| 1824 | (goto-char (match-end 0)) | |
| 1825 | (skip-chars-backward chars) | |
| 1826 | (delete-region (point) (progn (skip-chars-forward chars) | |
| 1827 | (point))) | |
| 1828 | (insert-char char (- col (current-column))))) | |
| 3dd63760 | 1829 | (if (looking-at "\t[1-9]") |
| 9d23c925 GM |
1830 | (if indent-tabs-mode |
| 1831 | (goto-char (match-end 0)) | |
| 1832 | (delete-char 2) | |
| 1833 | (insert-char ?\s 5) | |
| 1834 | (insert fortran-continuation-string)) | |
| 1835 | (if (looking-at " \\{5\\}[^ 0\n]") | |
| 1836 | (if indent-tabs-mode | |
| 1837 | (progn (delete-char 6) | |
| 1838 | (insert ?\t (fortran-numerical-continuation-char) 1)) | |
| 1839 | (forward-char 6)) | |
| 1840 | (delete-horizontal-space) | |
| 1841 | ;; Put line number in columns 0-4, or | |
| 0a39a75c | 1842 | ;; continuation character in column 5. |
| 9d23c925 GM |
1843 | (cond ((eobp)) |
| 1844 | ((looking-at (regexp-quote fortran-continuation-string)) | |
| 1845 | (if indent-tabs-mode | |
| 1846 | (progn | |
| 1847 | (indent-to | |
| 1848 | (if indent-tabs-mode | |
| 1849 | fortran-minimum-statement-indent-tab | |
| 1850 | fortran-minimum-statement-indent-fixed)) | |
| 1851 | (delete-char 1) | |
| 1852 | (insert-char (fortran-numerical-continuation-char) 1)) | |
| 1853 | (indent-to 5) | |
| 1854 | (forward-char 1))) | |
| 1855 | ((looking-at "[0-9]+") | |
| 1856 | (let ((extra-space (- 5 (- (match-end 0) (point))))) | |
| 1857 | (if (< extra-space 0) | |
| 1858 | (message "Warning: line number exceeds 5-digit limit.") | |
| 1859 | (indent-to (min fortran-line-number-indent extra-space)))) | |
| 1860 | (skip-chars-forward "0-9"))))) | |
| 3dd63760 JB |
1861 | ;; Point is now after any continuation character or line number. |
| 1862 | ;; Put body of statement where specified. | |
| 1863 | (delete-horizontal-space) | |
| 1864 | (indent-to col) | |
| 1865 | ;; Indent any comment following code on the same line. | |
| 5b04210c GM |
1866 | (when (fortran-find-comment-start-skip) |
| 1867 | (goto-char (match-beginning 0)) | |
| 1868 | (unless (= (current-column) (fortran-comment-indent)) | |
| 1869 | (delete-horizontal-space) | |
| 1870 | (indent-to (fortran-comment-indent))))))) | |
| 3dd63760 JB |
1871 | |
| 1872 | (defun fortran-line-number-indented-correctly-p () | |
| 1873 | "Return t if current line's line number is correctly indented. | |
| 1874 | Do not call if there is no line number." | |
| 1875 | (save-excursion | |
| 1876 | (beginning-of-line) | |
| 1877 | (skip-chars-forward " \t") | |
| 1878 | (and (<= (current-column) fortran-line-number-indent) | |
| 9d23c925 GM |
1879 | (or (= (current-column) fortran-line-number-indent) |
| 1880 | (progn (skip-chars-forward "0-9") | |
| 1881 | (= (current-column) 5)))))) | |
| 3dd63760 JB |
1882 | |
| 1883 | (defun fortran-check-for-matching-do () | |
| 7977773d DL |
1884 | "When called from a numbered statement, return t if matching DO is found. |
| 1885 | Otherwise return nil." | |
| 7dae727d | 1886 | (let ((case-fold-search t) |
| 9d23c925 | 1887 | charnum) |
| 3dd63760 JB |
1888 | (save-excursion |
| 1889 | (beginning-of-line) | |
| 5b04210c GM |
1890 | (when (looking-at "[ \t]*[0-9]+") |
| 1891 | (skip-chars-forward " \t") | |
| 9d23c925 | 1892 | (skip-chars-forward "0") ; skip past leading zeros |
| 5b04210c GM |
1893 | (setq charnum |
| 1894 | (buffer-substring (point) (progn | |
| 1895 | (skip-chars-forward "0-9") | |
| 1896 | (point)))) | |
| 1897 | (beginning-of-line) | |
| 1898 | (save-restriction | |
| 1899 | (save-excursion | |
| 1900 | (narrow-to-defun) | |
| 1901 | (and (re-search-backward | |
| 1902 | (concat | |
| 1903 | "\\(^[ \t0-9]*do[ \t]*0*" | |
| 1904 | charnum "\\b\\)\\|" "\\(^[ \t]*0*" | |
| 1905 | charnum "\\b\\)") | |
| 1906 | nil t) | |
| 1907 | (looking-at | |
| 1908 | (concat "^[ \t0-9]*do[ \t]*0*" | |
| 1909 | charnum))))))))) | |
| 3dd63760 | 1910 | |
| ff451e17 | 1911 | (defun fortran-find-comment-start-skip (&optional all) |
| b8cbdf43 | 1912 | "Move to past `comment-start-skip' found on current line. |
| ff451e17 SM |
1913 | Return non-nil if `comment-start-skip' found, nil if not. |
| 1914 | If ALL is nil, only match comments that start in column > 0." | |
| ff451e17 SM |
1915 | ;; Hopefully at some point we can just use the line below! -stef |
| 1916 | ;; (comment-search-forward (line-end-position) t)) | |
| 1917 | (when (or all comment-start-skip) | |
| 1918 | (let ((pos (point)) | |
| 9d23c925 GM |
1919 | (css (if comment-start-skip |
| 1920 | (concat fortran-comment-line-start-skip | |
| 1921 | "\\|" comment-start-skip) | |
| 1922 | fortran-comment-line-start-skip))) | |
| ff451e17 | 1923 | (when (re-search-forward css (line-end-position) t) |
| 9d23c925 GM |
1924 | (if (and (or all (> (match-beginning 0) (line-beginning-position))) |
| 1925 | (or (save-match-data | |
| 1926 | (not (fortran-is-in-string-p (match-beginning 0)))) | |
| 1927 | ;; Recurse for rest of line. | |
| 1928 | (fortran-find-comment-start-skip all))) | |
| 1929 | (point) | |
| 1930 | (goto-char pos) | |
| 1931 | nil))))) | |
| f022dd89 | 1932 | |
| 5b04210c | 1933 | ;; From: ralf@up3aud1.gwdg.de (Ralf Fassel) |
| 1eb6bf70 | 1934 | ;; Test if TAB format continuation lines work. |
| b56eb7c9 | 1935 | (defun fortran-is-in-string-p (where) |
| e7f767c2 | 1936 | "Return non-nil if WHERE (a buffer position) is inside a Fortran string." |
| b56eb7c9 RS |
1937 | (save-excursion |
| 1938 | (goto-char where) | |
| 1939 | (cond | |
| 9d23c925 GM |
1940 | ((bolp) nil) ; bol is never inside a string |
| 1941 | ((save-excursion ; comment lines too | |
| 1942 | (beginning-of-line) | |
| 1943 | (looking-at fortran-comment-line-start-skip)) nil) | |
| 0a39a75c | 1944 | (t (let ((parse-state '(0 nil nil nil nil nil 0)) |
| 9d23c925 GM |
1945 | (quoted-comment-start (if comment-start |
| 1946 | (regexp-quote comment-start))) | |
| 1947 | (not-done t) | |
| 1948 | parse-limit end-of-line) | |
| 1949 | ;; Move to start of current statement. | |
| 1950 | (fortran-next-statement) | |
| 1951 | (fortran-previous-statement) | |
| 1952 | ;; Now parse up to WHERE. | |
| 1953 | (while not-done | |
| 1954 | (if (or ;; Skip to next line if: | |
| 1955 | ;; - comment line? | |
| 1956 | (looking-at fortran-comment-line-start-skip) | |
| 1957 | ;; - at end of line? | |
| 1958 | (eolp) | |
| 1959 | ;; - not in a string and after comment-start? | |
| 1960 | (and (not (nth 3 parse-state)) | |
| 1961 | comment-start | |
| 1962 | (equal comment-start | |
| 1963 | (char-to-string (preceding-char))))) | |
| 1964 | (if (> (forward-line) 0) | |
| 1965 | (setq not-done nil)) | |
| 1966 | ;; else: | |
| 1967 | ;; If we are at beginning of code line, skip any | |
| 1968 | ;; whitespace, labels and tab continuation markers. | |
| 1969 | (if (bolp) (skip-chars-forward " \t0-9")) | |
| 1970 | ;; If we are in column <= 5 now, check for continuation char. | |
| 1971 | (cond ((= 5 (current-column)) (forward-char 1)) | |
| 1972 | ((and (< (current-column) 5) | |
| 1973 | (equal fortran-continuation-string | |
| 1974 | (char-to-string (following-char))) | |
| 1975 | (forward-char 1)))) | |
| 1976 | ;; Find out parse-limit from here. | |
| 1977 | (setq end-of-line (line-end-position)) | |
| 1978 | (setq parse-limit (min where end-of-line)) | |
| 1979 | ;; Parse max up to comment-start, if non-nil and in current line. | |
| 1980 | (if comment-start | |
| 1981 | (save-excursion | |
| 1982 | (if (re-search-forward quoted-comment-start end-of-line t) | |
| 1983 | (setq parse-limit (min (point) parse-limit))))) | |
| 1984 | ;; Now parse if still in limits. | |
| 1985 | (if (< (point) where) | |
| 1986 | (setq parse-state (parse-partial-sexp | |
| 1987 | (point) parse-limit nil nil parse-state)) | |
| 1988 | (setq not-done nil)))) | |
| 1989 | ;; Result. | |
| 1990 | (nth 3 parse-state)))))) | |
| b8cbdf43 | 1991 | |
| 7aabd23e DL |
1992 | ;; From old version. |
| 1993 | (defalias 'fortran-auto-fill-mode 'auto-fill-mode) | |
| b8cbdf43 | 1994 | |
| 4254fe58 | 1995 | (defun fortran-fill () |
| 5b04210c | 1996 | "Fill the current line at an appropriate point(s)." |
| 315aa1de | 1997 | (let* ((auto-fill-function #'fortran-auto-fill) |
| 9d23c925 GM |
1998 | (opoint (point)) |
| 1999 | (bol (line-beginning-position)) | |
| 2000 | (eol (line-end-position)) | |
| 2001 | (bos (min eol (+ bol (fortran-current-line-indentation)))) | |
| 337c50a5 GM |
2002 | ;; If in a string at fill-column, break it either before the |
| 2003 | ;; initial quote, or at fill-col (if string is too long). | |
| 9d23c925 GM |
2004 | (quote |
| 2005 | (save-excursion | |
| 2006 | (goto-char bol) | |
| 2007 | ;; OK to break quotes on comment lines. | |
| 2008 | (unless (looking-at fortran-comment-line-start-skip) | |
| 98110b1f | 2009 | (let (fcpoint start) |
| 337c50a5 GM |
2010 | (move-to-column fill-column) |
| 2011 | (when (fortran-is-in-string-p (setq fcpoint (point))) | |
| 2012 | (save-excursion | |
| 2013 | (re-search-backward "\\S\"\\s\"\\S\"?" bol t) | |
| 2014 | (setq start | |
| 2015 | (if fortran-break-before-delimiters | |
| 2016 | (point) | |
| 2017 | (1+ (point))))) | |
| 2018 | (if (re-search-forward "\\S\"\\s\"\\S\"" eol t) | |
| 2019 | (backward-char 2)) | |
| 8cb8832f GM |
2020 | ;; If the current string is longer than (fill-column |
| 2021 | ;; - 6) chars, break it at the fill column (else | |
| 2022 | ;; infinite loop). | |
| 337c50a5 GM |
2023 | (if (> (- (point) start) |
| 2024 | (- fill-column 6 fortran-continuation-indent)) | |
| 2025 | fcpoint | |
| 2026 | start)))))) | |
| 9d23c925 GM |
2027 | ;; Decide where to split the line. If a position for a quoted |
| 2028 | ;; string was found above then use that, else break the line | |
| 2029 | ;; before/after the last delimiter. | |
| 2030 | (fill-point | |
| 2031 | (or quote | |
| 2032 | (save-excursion | |
| 337c50a5 GM |
2033 | ;; If f-b-b-d is t, have an extra column to play with, |
| 2034 | ;; since delimiter gets shifted to new line. | |
| 2035 | (move-to-column (if fortran-break-before-delimiters | |
| 2036 | (1+ fill-column) | |
| 2037 | fill-column)) | |
| 2038 | (let ((repeat t)) | |
| 2039 | (while repeat | |
| 2040 | (setq repeat nil) | |
| 2041 | ;; Adapted from f90-find-breakpoint. | |
| 8aa7b879 | 2042 | (re-search-backward fortran-break-delimiters-re bol) |
| 337c50a5 GM |
2043 | (if (not fortran-break-before-delimiters) |
| 2044 | (if (looking-at fortran-no-break-re) | |
| 2045 | ;; Deal with cases such as "**" split over | |
| 2046 | ;; fill-col. Simpler alternative would be | |
| 2047 | ;; to start from (1- fill-column) above. | |
| 2048 | (if (> (+ 2 (current-column)) fill-column) | |
| 2049 | (setq repeat t) | |
| 2050 | (forward-char 2)) | |
| 2051 | (forward-char 1)) | |
| 2052 | (backward-char) | |
| 2053 | (or (looking-at fortran-no-break-re) | |
| 2054 | (forward-char))))) | |
| 2055 | ;; Line indented beyond fill-column? | |
| 9d23c925 | 2056 | (when (<= (point) bos) |
| 98110b1f | 2057 | (move-to-column (1+ fill-column)) |
| 0a39a75c | 2058 | ;; What is this doing??? |
| 98110b1f GM |
2059 | (or (re-search-forward "[\t\n,'+-/*)=]" eol t) |
| 2060 | (goto-char bol))) | |
| 9d23c925 GM |
2061 | (if (bolp) |
| 2062 | (re-search-forward "[ \t]" opoint t)) | |
| 337c50a5 | 2063 | (point))))) |
| 0a39a75c | 2064 | ;; If we are in an in-line comment, don't break unless the |
| b8cbdf43 RS |
2065 | ;; line of code is longer than it should be. Otherwise |
| 2066 | ;; break the line at the column computed above. | |
| 2067 | ;; | |
| 0a39a75c GM |
2068 | ;; Need to use fortran-find-comment-start-skip to make sure that |
| 2069 | ;; quoted !'s don't prevent a break. | |
| ff451e17 | 2070 | (when (and (save-excursion |
| 9d23c925 GM |
2071 | (beginning-of-line) |
| 2072 | (if (not (fortran-find-comment-start-skip)) | |
| 0ab47edc | 2073 | t |
| 9d23c925 GM |
2074 | (goto-char (match-beginning 0)) |
| 2075 | (>= (point) fill-point))) | |
| 2076 | (save-excursion | |
| 2077 | (goto-char fill-point) | |
| 2078 | (not (bolp))) | |
| 2079 | (> (save-excursion | |
| 2080 | (goto-char opoint) | |
| 2081 | (current-column)) | |
| 2082 | (min (1+ fill-column) | |
| 2083 | (+ (fortran-calculate-indent) | |
| 2084 | fortran-continuation-indent)))) | |
| ff451e17 SM |
2085 | (goto-char fill-point) |
| 2086 | (fortran-break-line) | |
| 2087 | (end-of-line)))) | |
| 7dae727d | 2088 | |
| b8cbdf43 | 2089 | (defun fortran-break-line () |
| 5b04210c | 2090 | "Call `fortran-split-line'. Joins continuation lines first, then refills." |
| 5d724235 | 2091 | (let ((bol (line-beginning-position)) |
| 9d23c925 GM |
2092 | (comment-string |
| 2093 | (save-excursion | |
| 2094 | (if (fortran-find-comment-start-skip) | |
| 2095 | (delete-and-extract-region | |
| 2096 | (match-beginning 0) (line-end-position)))))) | |
| 0a39a75c | 2097 | ;; Forward line 1 really needs to go to next non white line. |
| 1eb6bf70 | 2098 | (if (save-excursion (forward-line) |
| 9d23c925 GM |
2099 | (looking-at " \\{5\\}[^ 0\n]\\|\t[1-9]")) |
| 2100 | (progn | |
| 2101 | (end-of-line) | |
| 2102 | (delete-region (point) (match-end 0)) | |
| 2103 | (delete-horizontal-space) | |
| 2104 | (fortran-fill)) | |
| b8cbdf43 RS |
2105 | (fortran-split-line)) |
| 2106 | (if comment-string | |
| 9d23c925 GM |
2107 | (save-excursion |
| 2108 | (goto-char bol) | |
| 2109 | (end-of-line) | |
| 2110 | (delete-horizontal-space) | |
| 2111 | (indent-to (fortran-comment-indent)) | |
| 2112 | (insert comment-string))))) | |
| b8cbdf43 | 2113 | |
| 23029d77 | 2114 | (defun fortran-analyze-file-format () |
| 7977773d | 2115 | "Return nil if fixed format is used, t if TAB formatting is used. |
| 5b04210c GM |
2116 | Use `fortran-tab-mode-default' if no non-comment statements are found |
| 2117 | before the end or in the first `fortran-analyze-depth' lines." | |
| 23029d77 JB |
2118 | (let ((i 0)) |
| 2119 | (save-excursion | |
| 2120 | (goto-char (point-min)) | |
| 23029d77 | 2121 | (while (not (or |
| 9d23c925 GM |
2122 | (eobp) |
| 2123 | (eq (char-after) ?\t) | |
| 2124 | (looking-at " \\{6\\}") | |
| 2125 | (> i fortran-analyze-depth))) | |
| 2126 | (forward-line) | |
| 2127 | (setq i (1+ i))) | |
| 23029d77 | 2128 | (cond |
| 7dae727d | 2129 | ((eq (char-after) ?\t) t) |
| 315aa1de | 2130 | ((looking-at " \\{6\\}") nil) |
| a7113309 | 2131 | (t fortran-tab-mode-default))))) |
| 23029d77 | 2132 | |
| 1eb6bf70 DL |
2133 | (defun fortran-fill-paragraph (&optional justify) |
| 2134 | "Fill surrounding comment block as paragraphs, else fill statement. | |
| 5b04210c GM |
2135 | Intended as the value of `fill-paragraph-function'. |
| 2136 | A comment block is filled by calling `fill-comment-paragraph' with | |
| 2137 | argument JUSTIFY, otherwise `fortran-fill-statement' is called. | |
| 2138 | Always returns non-nil (to prevent `fill-paragraph' being called)." | |
| 2139 | (interactive "*P") | |
| 2bcfe15e SM |
2140 | (or (fill-comment-paragraph justify) |
| 2141 | (fortran-fill-statement) | |
| 2142 | t)) | |
| 1eb6bf70 DL |
2143 | |
| 2144 | (defun fortran-fill-statement () | |
| 5b04210c GM |
2145 | "Fill a Fortran statement up to `fill-column'." |
| 2146 | (interactive "*") | |
| 315aa1de | 2147 | (let ((auto-fill-function #'fortran-auto-fill)) |
| 5b04210c GM |
2148 | (unless (save-excursion |
| 2149 | (beginning-of-line) | |
| 2150 | (or (looking-at "[ \t]*$") | |
| 2151 | (looking-at fortran-comment-line-start-skip) | |
| 2152 | (and comment-start-skip | |
| 2153 | (looking-at (concat "[ \t]*" comment-start-skip))))) | |
| 2154 | (save-excursion | |
| 2155 | ;; Find beginning of statement. | |
| 2156 | (fortran-next-statement) | |
| 2157 | (fortran-previous-statement) | |
| 2158 | ;; Re-indent initially. | |
| 2159 | (fortran-indent-line) | |
| 2160 | ;; Replace newline plus continuation field plus indentation with | |
| 2161 | ;; single space. | |
| 2162 | (while (progn | |
| 2163 | (forward-line) | |
| 2164 | (fortran-remove-continuation))) | |
| 2165 | (fortran-previous-statement))) | |
| e04196d3 | 2166 | (fortran-indent-line))) |
| 1eb6bf70 | 2167 | |
| cfe9d0b5 | 2168 | (defun fortran-strip-sequence-nos (&optional do-space) |
| 694cf05e GM |
2169 | "Delete all text in column `fortran-line-length' (default 72) and up. |
| 2170 | This is assumed to be sequence numbers. Normally also deletes | |
| 2171 | trailing whitespace after stripping such text. Supplying prefix | |
| 2172 | arg DO-SPACE prevents stripping the whitespace." | |
| 5b04210c | 2173 | (interactive "*p") |
| 3b4613a4 DL |
2174 | (save-excursion |
| 2175 | (goto-char (point-min)) | |
| 694cf05e GM |
2176 | (while (re-search-forward (format "^.\\{%d\\}\\(.*\\)" fortran-line-length) |
| 2177 | nil t) | |
| 3b4613a4 DL |
2178 | (replace-match "" nil nil nil 1) |
| 2179 | (unless do-space (delete-horizontal-space))))) | |
| 2180 | ||
| 4a948dbf | 2181 | ;; This code used to live in add-log.el, but this is a better place for it. |
| 68ca306c DL |
2182 | (defun fortran-current-defun () |
| 2183 | "Function to use for `add-log-current-defun-function' in Fortran mode." | |
| a245ece5 GM |
2184 | (save-excursion |
| 2185 | ;; We must be inside function body for this to work. | |
| 2186 | (fortran-beginning-of-subprogram) | |
| 4a948dbf | 2187 | (let ((case-fold-search t)) |
| 0a39a75c | 2188 | ;; Search for fortran subprogram start. |
| a245ece5 | 2189 | (if (re-search-forward |
| 4a948dbf | 2190 | fortran-start-prog-re |
| a245ece5 GM |
2191 | (save-excursion (fortran-end-of-subprogram) |
| 2192 | (point)) | |
| 2193 | t) | |
| 2194 | (or (match-string-no-properties 2) | |
| 2195 | (progn | |
| 0a39a75c | 2196 | ;; Move to EOL or before first left paren. |
| a245ece5 GM |
2197 | (if (re-search-forward "[(\n]" nil t) |
| 2198 | (progn (backward-char) | |
| 2199 | (skip-chars-backward " \t")) | |
| 2200 | (end-of-line)) | |
| 2201 | ;; Use the name preceding that. | |
| 2202 | (buffer-substring-no-properties (point) (progn (backward-sexp) | |
| 2203 | (point))))) | |
| 2204 | "main")))) | |
| 68ca306c | 2205 | |
| 49116ac0 JB |
2206 | (provide 'fortran) |
| 2207 | ||
| 1a06eabd | 2208 | ;;; fortran.el ends here |