1 ;;; f90.el --- Fortran-90 mode (free format) -*- lexical-binding: t -*-
3 ;; Copyright (C) 1995-1997, 2000-2012 Free Software Foundation, Inc.
5 ;; Author: Torbjörn Einarsson <Torbjorn.Einarsson@era.ericsson.se>
6 ;; Maintainer: Glenn Morris <rgm@gnu.org>
7 ;; Keywords: fortran, f90, languages
9 ;; This file is part of GNU Emacs.
11 ;; GNU Emacs is free software: you can redistribute it and/or modify
12 ;; it under the terms of the GNU General Public License as published by
13 ;; the Free Software Foundation, either version 3 of the License, or
14 ;; (at your option) any later version.
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.
21 ;; You should have received a copy of the GNU General Public License
22 ;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
26 ;; Major mode for editing F90 programs in FREE FORMAT.
27 ;; The minor language revision F95 is also supported (with font-locking).
28 ;; Some/many (?) aspects of F2003 are supported.
29 ;; Some aspects of F2008 are supported.
31 ;; Knows about continuation lines, named structured statements, and other
32 ;; features in F90 including HPF (High Performance Fortran) structures.
33 ;; The basic feature provides accurate indentation of F90 programs.
34 ;; In addition, there are many more features like automatic matching of all
35 ;; end statements, an auto-fill function to break long lines, a join-lines
36 ;; function which joins continued lines, etc.
38 ;; To facilitate typing, a fairly complete list of abbreviations is provided.
39 ;; All abbreviations begin with the backquote character "`"
40 ;; For example, `i expands to integer (if abbrev-mode is on).
42 ;; There are two separate features for altering the appearance of code:
43 ;; 1) Upcasing or capitalizing of all keywords.
44 ;; 2) Colors/fonts using font-lock-mode.
45 ;; Automatic upcase or downcase of keywords is controlled by the variable
46 ;; f90-auto-keyword-case.
48 ;; The indentations of lines starting with ! is determined by the first of the
49 ;; following matches (values in the left column are the defaults):
51 ;; start-string/regexp indent variable holding start-string/regexp
53 ;; !hpf\\$ (re) 0 f90-directive-comment-re
54 ;; !!$ 0 f90-comment-region
55 ;; ! (re) as code f90-indented-comment-re
56 ;; default comment-column
58 ;; Ex: Here is the result of 3 different settings of f90-indented-comment-re
59 ;; f90-indented-comment-re !-indentation !!-indentation
61 ;; !! comment-column as code
62 ;; ![^!] as code comment-column
63 ;; Trailing comments are indented to comment-column with indent-for-comment.
64 ;; The function f90-comment-region toggles insertion of
65 ;; the variable f90-comment-region in every line of the region.
67 ;; One common convention for free vs. fixed format is that free format files
68 ;; have the ending .f90 or .f95 while fixed format files have the ending .f.
69 ;; Emacs automatically loads Fortran files in the appropriate mode based
70 ;; on extension. You can modify this by adjusting the variable auto-mode-alist.
72 ;; (add-to-list 'auto-mode-alist '("\\.f\\'" . f90-mode))
74 ;; Once you have entered f90-mode, you may get more info by using
75 ;; the command describe-mode (C-h m). For online help use
76 ;; C-h f <Name of function you want described>, or
77 ;; C-h v <Name of variable you want described>.
79 ;; To customize f90-mode for your taste, use, for example:
80 ;; (you don't have to specify values for all the parameters below)
82 ;; (add-hook 'f90-mode-hook
83 ;; ;; These are the default values.
84 ;; (lambda () (setq f90-do-indent 3
87 ;; f90-program-indent 2
88 ;; f90-continuation-indent 5
89 ;; f90-comment-region "!!$"
90 ;; f90-directive-comment-re "!hpf\\$"
91 ;; f90-indented-comment-re "!"
92 ;; f90-break-delimiters "[-+\\*/><=,% \t]"
93 ;; f90-break-before-delimiters t
94 ;; f90-beginning-ampersand t
95 ;; f90-smart-end 'blink
96 ;; f90-auto-keyword-case nil
97 ;; f90-leave-line-no nil
98 ;; indent-tabs-mode nil
99 ;; f90-font-lock-keywords f90-font-lock-keywords-2
101 ;; ;; These are not default.
102 ;; (abbrev-mode 1) ; turn on abbreviation mode
103 ;; (f90-add-imenu-menu) ; extra menu with functions etc.
104 ;; (if f90-auto-keyword-case ; change case of all keywords on startup
105 ;; (f90-change-keywords f90-auto-keyword-case))))
107 ;; in your init file. You can also customize the lists
108 ;; f90-font-lock-keywords, etc.
110 ;; The auto-fill and abbreviation minor modes are accessible from the F90 menu,
111 ;; or by using M-x auto-fill-mode and M-x abbrev-mode, respectively.
114 ;; 1) Line numbers are by default left-justified. If f90-leave-line-no is
115 ;; non-nil, the line numbers are never touched.
116 ;; 2) Multi-; statements like "do i=1,20 ; j=j+i ; end do" are not handled
117 ;; correctly, but I imagine them to be rare.
118 ;; 3) Regexps for hilit19 are no longer supported.
119 ;; 4) For FIXED FORMAT code, use fortran mode.
120 ;; 5) This mode does not work under emacs-18.x.
121 ;; 6) Preprocessor directives, i.e., lines starting with # are left-justified
122 ;; and are untouched by all case-changing commands. There is, at present, no
123 ;; mechanism for treating multi-line directives (continued by \ ).
124 ;; 7) f77 do-loops do 10 i=.. ; ; 10 continue are not correctly indented.
125 ;; You are urged to use f90-do loops (with labels if you wish).
126 ;; 8) The highlighting mode under XEmacs is not as complete as under Emacs.
128 ;; List of user commands
129 ;; f90-previous-statement f90-next-statement
130 ;; f90-beginning-of-subprogram f90-end-of-subprogram f90-mark-subprogram
131 ;; f90-comment-region
132 ;; f90-indent-line f90-indent-new-line
133 ;; f90-indent-region (can be called by calling indent-region)
134 ;; f90-indent-subprogram
135 ;; f90-break-line f90-join-lines
138 ;; f90-upcase-keywords f90-upcase-region-keywords
139 ;; f90-downcase-keywords f90-downcase-region-keywords
140 ;; f90-capitalize-keywords f90-capitalize-region-keywords
141 ;; f90-add-imenu-menu
142 ;; f90-font-lock-1, f90-font-lock-2, f90-font-lock-3, f90-font-lock-4
144 ;; Original author's thanks
145 ;; Thanks to all the people who have tested the mode. Special thanks to Jens
146 ;; Bloch Helmers for encouraging me to write this code, for creative
147 ;; suggestions as well as for the lists of hpf-commands.
148 ;; Also thanks to the authors of the fortran and pascal modes, on which some
149 ;; of this code is built.
154 ;; 1. Any missing F2003 syntax?
155 ;; 2. Have "f90-mode" just recognize F90 syntax, then derived modes
156 ;; "f95-mode", "f2003-mode" for the language revisions.
157 ;; 3. Support for align.
159 ;; 1. OpenMP, OpenMPI?, preprocessor highlighting.
160 ;; 2. integer_name = 1
161 ;; 3. Labels for "else" statements (F2003)?
163 (defvar comment-auto-fill-only-comments
)
164 (defvar font-lock-keywords
)
169 "Major mode for editing free format Fortran 90,95 code."
170 :link
'(custom-group-link :tag
"Font Lock Faces group" font-lock-faces
)
173 (defgroup f90-indent nil
174 "Indentation in free format Fortran."
179 (defcustom f90-do-indent
3
180 "Extra indentation applied to DO blocks."
185 (defcustom f90-if-indent
3
186 "Extra indentation applied to IF, SELECT CASE, WHERE and FORALL blocks."
191 (defcustom f90-type-indent
3
192 "Extra indentation applied to TYPE, ENUM, INTERFACE and BLOCK DATA blocks."
197 (defcustom f90-program-indent
2
198 "Extra indentation applied to PROGRAM, MODULE, SUBROUTINE, FUNCTION blocks."
203 (defcustom f90-associate-indent
2
204 "Extra indentation applied to ASSOCIATE blocks."
210 (defcustom f90-critical-indent
2
211 "Extra indentation applied to BLOCK, CRITICAL blocks."
217 (defcustom f90-continuation-indent
5
218 "Extra indentation applied to continuation lines."
223 (defcustom f90-comment-region
"!!$"
224 "String inserted by \\[f90-comment-region] at start of each line in region."
229 (defcustom f90-indented-comment-re
"!"
230 "Regexp matching comments to indent as code."
235 ;; Should we add ^# to this? That's not really a comment.
236 (defcustom f90-directive-comment-re
"!hpf\\$"
237 "Regexp of comment-like directive like \"!HPF\\\\$\", not to be indented."
242 (defcustom f90-beginning-ampersand t
243 "Non-nil gives automatic insertion of \& at start of continuation line."
248 (defcustom f90-smart-end
'blink
249 "Qualification of END statements according to the matching block start.
250 For example, the END that closes an IF block is changed to END
251 IF. If the block has a label, this is added as well. Allowed
252 values are 'blink, 'no-blink, and nil. If nil, nothing is done.
253 The other two settings have the same effect, but 'blink
254 additionally blinks the cursor to the start of the block."
255 :type
'(choice (const blink
) (const no-blink
) (const nil
))
256 :safe
(lambda (value) (memq value
'(blink no-blink nil
)))
259 (defcustom f90-break-delimiters
"[-+\\*/><=,% \t]"
260 "Regexp matching delimiter characters at which lines may be broken.
261 There are some common two-character tokens where one or more of
262 the members matches this regexp. Although Fortran allows breaks
263 within lexical tokens (provided the next line has a beginning ampersand),
264 the constant `f90-no-break-re' ensures that such tokens are not split."
269 (defcustom f90-break-before-delimiters t
270 "Non-nil causes `f90-do-auto-fill' to break lines before delimiters."
275 (defcustom f90-auto-keyword-case nil
276 "Automatic case conversion of keywords.
277 The options are 'downcase-word, 'upcase-word, 'capitalize-word and nil."
278 :type
'(choice (const downcase-word
) (const upcase-word
)
279 (const capitalize-word
) (const nil
))
280 :safe
(lambda (value) (memq value
'(downcase-word
281 capitalize-word upcase-word nil
)))
284 (defcustom f90-leave-line-no nil
285 "If non-nil, line numbers are not left justified."
290 (defcustom f90-mode-hook nil
291 "Hook run when entering F90 mode."
293 ;; Not the only safe options, but some common ones.
294 :safe
(lambda (value) (member value
'((f90-add-imenu-menu) nil
)))
295 :options
'(f90-add-imenu-menu)
298 ;; User options end here.
300 (defconst f90-keywords-re
301 (regexp-opt '("allocatable" "allocate" "assign" "assignment" "backspace"
302 "block" "call" "case" "character" "close" "common" "complex"
303 "contains" "continue" "cycle" "data" "deallocate"
304 "dimension" "do" "double" "else" "elseif" "elsewhere" "end"
305 "enddo" "endfile" "endif" "entry" "equivalence" "exit"
306 "external" "forall" "format" "function" "goto" "if"
307 "implicit" "include" "inquire" "integer" "intent"
308 "interface" "intrinsic" "logical" "module" "namelist" "none"
309 "nullify" "only" "open" "operator" "optional" "parameter"
310 "pause" "pointer" "precision" "print" "private" "procedure"
311 "program" "public" "read" "real" "recursive" "result" "return"
312 "rewind" "save" "select" "sequence" "stop" "subroutine"
313 "target" "then" "type" "use" "where" "while" "write"
317 "abstract" "associate" "asynchronous" "bind" "class"
318 "deferred" "enum" "enumerator" "extends" "extends_type_of"
319 "final" "generic" "import" "non_intrinsic" "non_overridable"
320 "nopass" "pass" "protected" "same_type_as" "value" "volatile"
322 "contiguous" "submodule" "concurrent" "codimension"
323 "sync all" "sync memory" "critical" "image_index"
325 "Regexp used by the function `f90-change-keywords'.")
327 (defconst f90-keywords-level-3-re
329 '("allocatable" "allocate" "assign" "assignment" "backspace"
330 "close" "deallocate" "dimension" "endfile" "entry" "equivalence"
331 "external" "inquire" "intent" "intrinsic" "nullify" "only" "open"
332 ;; FIXME operator and assignment should be F2003 procedures?
333 "operator" "optional" "parameter" "pause" "pointer" "print" "private"
334 "public" "read" "recursive" "result" "rewind" "save" "select"
335 "sequence" "target" "write"
338 ;; F2003. asynchronous separate.
339 "abstract" "deferred" "import" "final" "non_intrinsic" "non_overridable"
340 "nopass" "pass" "protected" "value" "volatile"
342 ;; "concurrent" is only in the sense of "do [,] concurrent", but given
343 ;; the [,] it's simpler to just do every instance (cf "do while").
344 "contiguous" "concurrent" "codimension" "sync all" "sync memory"
346 "Keyword-regexp for font-lock level >= 3.")
348 (defconst f90-procedures-re
351 '("abs" "achar" "acos" "adjustl" "adjustr" "aimag" "aint"
352 "all" "allocated" "anint" "any" "asin" "associated"
353 "atan" "atan2" "bit_size" "btest" "ceiling" "char" "cmplx"
354 "conjg" "cos" "cosh" "count" "cshift" "date_and_time" "dble"
355 "digits" "dim" "dot_product" "dprod" "eoshift" "epsilon"
356 "exp" "exponent" "floor" "fraction" "huge" "iachar" "iand"
357 "ibclr" "ibits" "ibset" "ichar" "ieor" "index" "int" "ior"
358 "ishft" "ishftc" "kind" "lbound" "len" "len_trim" "lge" "lgt"
359 "lle" "llt" "log" "log10" "logical" "matmul" "max"
360 "maxexponent" "maxloc" "maxval" "merge" "min" "minexponent"
361 "minloc" "minval" "mod" "modulo" "mvbits" "nearest" "nint"
362 "not" "pack" "precision" "present" "product" "radix"
363 ;; Real is taken out here to avoid highlighting declarations.
364 "random_number" "random_seed" "range" ;; "real"
365 "repeat" "reshape" "rrspacing" "scale" "scan"
366 "selected_int_kind" "selected_real_kind" "set_exponent"
367 "shape" "sign" "sin" "sinh" "size" "spacing" "spread" "sqrt"
368 "sum" "system_clock" "tan" "tanh" "tiny" "transfer"
369 "transpose" "trim" "ubound" "unpack" "verify"
370 ;; F95 intrinsic functions.
373 "move_alloc" "command_argument_count" "get_command"
374 "get_command_argument" "get_environment_variable"
375 "selected_char_kind" "wait" "flush" "new_line"
376 "extends" "extends_type_of" "same_type_as" "bind"
377 ;; F2003 ieee_arithmetic intrinsic module.
378 "ieee_support_underflow_control" "ieee_get_underflow_mode"
379 "ieee_set_underflow_mode"
380 ;; F2003 iso_c_binding intrinsic module.
381 "c_loc" "c_funloc" "c_associated" "c_f_pointer"
384 "bge" "bgt" "ble" "blt" "dshiftl" "dshiftr" "leadz" "popcnt"
385 "poppar" "trailz" "maskl" "maskr" "shifta" "shiftl" "shiftr"
386 "merge_bits" "iall" "iany" "iparity" "storage_size"
387 "bessel_j0" "bessel_j1" "bessel_jn"
388 "bessel_y0" "bessel_y1" "bessel_yn"
389 "erf" "erfc" "erfc_scaled" "gamma" "hypot" "log_gamma"
390 "norm2" "parity" "findloc" "is_contiguous"
391 "sync images" "lock" "unlock" "image_index"
392 "lcobound" "ucobound" "num_images" "this_image"
393 ;; F2008 iso_fortran_env module.
394 "compiler_options" "compiler_version"
395 ;; F2008 iso_c_binding module.
398 ;; A left parenthesis to avoid highlighting non-procedures.
400 "Regexp whose first part matches F90 intrinsic procedures.")
402 (defconst f90-operators-re
404 (regexp-opt '("and" "eq" "eqv" "false" "ge" "gt" "le" "lt" "ne"
405 "neqv" "not" "or" "true") t
)
407 "Regexp matching intrinsic operators.")
409 (defconst f90-hpf-keywords-re
411 ;; Intrinsic procedures.
412 '("all_prefix" "all_scatter" "all_suffix" "any_prefix"
413 "any_scatter" "any_suffix" "copy_prefix" "copy_scatter"
414 "copy_suffix" "count_prefix" "count_scatter" "count_suffix"
415 "grade_down" "grade_up"
416 "hpf_alignment" "hpf_distribution" "hpf_template" "iall" "iall_prefix"
417 "iall_scatter" "iall_suffix" "iany" "iany_prefix" "iany_scatter"
418 "iany_suffix" "ilen" "iparity" "iparity_prefix"
419 "iparity_scatter" "iparity_suffix" "leadz" "maxval_prefix"
420 "maxval_scatter" "maxval_suffix" "minval_prefix" "minval_scatter"
421 "minval_suffix" "number_of_processors" "parity"
422 "parity_prefix" "parity_scatter" "parity_suffix" "popcnt" "poppar"
423 "processors_shape" "product_prefix" "product_scatter"
424 "product_suffix" "sum_prefix" "sum_scatter" "sum_suffix"
426 "align" "distribute" "dynamic" "independent" "inherit" "processors"
427 "realign" "redistribute" "template"
429 "block" "cyclic" "extrinsic" "new" "onto" "pure" "with") 'words
)
430 "Regexp for all HPF keywords, procedures and directives.")
432 (defconst f90-constants-re
433 (regexp-opt '( ;; F2003 iso_fortran_env constants.
435 "input_unit" "output_unit" "error_unit"
436 "iostat_end" "iostat_eor"
437 "numeric_storage_size" "character_storage_size"
439 ;; F2003 iso_c_binding constants.
441 "c_int" "c_short" "c_long" "c_long_long" "c_signed_char"
443 "c_int8_t" "c_int16_t" "c_int32_t" "c_int64_t"
444 "c_int_least8_t" "c_int_least16_t" "c_int_least32_t"
446 "c_int_fast8_t" "c_int_fast16_t" "c_int_fast32_t"
448 "c_intmax_t" "c_intptr_t"
449 "c_float" "c_double" "c_long_double"
450 "c_float_complex" "c_double_complex" "c_long_double_complex"
452 "c_null_char" "c_alert" "c_backspace" "c_form_feed"
453 "c_new_line" "c_carriage_return" "c_horizontal_tab"
455 "c_ptr" "c_funptr" "c_null_ptr" "c_null_funptr"
459 ;; F2008 iso_fortran_env constants.
460 "character_kinds" "int8" "int16" "int32" "int64"
461 "integer_kinds" "iostat_inquire_internal_unit"
462 "logical_kinds" "real_kinds" "real32" "real64" "real128"
463 "lock_type" "atomic_int_kind" "atomic_logical_kind"
465 "Regexp for Fortran intrinsic constants.")
467 ;; cf f90-looking-at-type-like.
468 (defun f90-typedef-matcher (limit)
469 "Search for the start/end of the definition of a derived type, up to LIMIT.
470 Set the match data so that subexpression 1,2 are the TYPE, and
471 type-name parts, respectively."
473 (while (and (re-search-forward "\\<\\(\\(?:end[ \t]*\\)?type\\)\\>[ \t]*"
477 (setq l
(match-data))
478 (unless (looking-at "\\(is\\>\\|(\\)")
479 (when (if (looking-at "\\(\\sw+\\)")
480 (goto-char (match-end 0))
482 "[ \t]*::[ \t]*\\(\\sw+\\)"
483 (line-end-position) t
))
484 ;; 0 is wrong, but we don't use it.
486 (append l
(list (match-beginning 1)
491 (defvar f90-font-lock-keywords-1
493 ;; Special highlighting of "module procedure".
494 '("\\<\\(module[ \t]*procedure\\)\\>\\([^()\n]*::\\)?[ \t]*\\([^&!\n]*\\)"
495 (1 font-lock-keyword-face
) (3 font-lock-function-name-face nil t
))
496 ;; Highlight definition of derived type.
497 ;;; '("\\<\\(\\(?:end[ \t]*\\)?type\\)\\>\\([^()\n]*::\\)?[ \t]*\\(\\sw+\\)"
498 ;;; (1 font-lock-keyword-face) (3 font-lock-function-name-face))
499 '(f90-typedef-matcher
500 (1 font-lock-keyword-face
) (2 font-lock-function-name-face
))
501 ;; F2003. Prevent operators being highlighted as functions.
502 '("\\<\\(\\(?:end[ \t]*\\)?interface[ \t]*\\(?:assignment\\|operator\\|\
503 read\\|write\\)\\)[ \t]*(" (1 font-lock-keyword-face t
))
504 ;; Other functions and declarations. Named interfaces = F2003.
505 ;; F2008: end submodule submodule_name.
506 '("\\<\\(\\(?:end[ \t]*\\)?\\(program\\|\\(?:sub\\)?module\\|\
507 function\\|associate\\|subroutine\\|interface\\)\\|use\\|call\\)\
508 \\>[ \t]*\\(\\sw+\\)?"
509 (1 font-lock-keyword-face
) (3 font-lock-function-name-face nil t
))
510 ;; F2008: submodule (parent_name) submodule_name.
511 '("\\<\\(submodule\\)\\>[ \t]*([^)\n]+)[ \t]*\\(\\sw+\\)?"
512 (1 font-lock-keyword-face
) (2 font-lock-function-name-face nil t
))
514 '("\\<\\(use\\)[ \t]*,[ \t]*\\(\\(?:non_\\)?intrinsic\\)[ \t]*::[ \t]*\
516 (1 font-lock-keyword-face
) (2 font-lock-keyword-face
)
517 (3 font-lock-function-name-face
))
518 "\\<\\(\\(end[ \t]*\\)?block[ \t]*data\\|contains\\)\\>"
519 ;; "abstract interface" is F2003.
520 '("\\<abstract[ \t]*interface\\>" (0 font-lock-keyword-face t
)))
521 "This does fairly subdued highlighting of comments and function calls.")
523 ;; NB not explicitly handling this, yet it seems to work.
524 ;; type(...) function foo()
525 (defun f90-typedec-matcher (limit)
526 "Search for the declaration of variables of derived type, up to LIMIT.
527 Set the match data so that subexpression 1,2 are the TYPE(...),
528 and variable-name parts, respectively."
529 ;; Matcher functions must return nil only when there are no more
530 ;; matches within the search range.
532 (while (and (re-search-forward "\\<\\(type\\|class\\)[ \t]*(" limit t
)
537 ;; Set l after this to just highlight
540 ;; Needed for: type( foo(...) ) :: bar
542 (setq l
(list (match-beginning 0) (point)))
543 (skip-chars-forward " \t")
546 ;; type (foo) bar, qux
547 (if (looking-at "\\sw+")
549 ;; type (foo), stuff :: bar, qux
550 "::[ \t]*\\([^&!\n]+\\)")
551 (line-end-position) t
)
553 (append (list (car l
) (match-end 1))
554 l
(list (match-beginning 1)
560 (defvar f90-font-lock-keywords-2
562 f90-font-lock-keywords-1
564 ;; Variable declarations (avoid the real function call).
565 ;; NB by accident (?), this correctly fontifies the "integer" in:
566 ;; integer () function foo ()
567 ;; because "() function foo ()" matches \\3.
568 ;; The "pure" part does not really belong here, but was added to
569 ;; exploit that hack.
570 ;; The "function foo" bit is correctly fontified by keywords-1.
571 ;; TODO ? actually check for balanced parens in that case.
572 '("^[ \t0-9]*\\(?:pure\\|elemental\\)?[ \t]*\
573 \\(real\\|integer\\|c\\(haracter\\|omplex\\)\\|\
574 enumerator\\|generic\\|procedure\\|logical\\|double[ \t]*precision\\)\
575 \\(.*::\\|[ \t]*(.*)\\)?\\([^&!\n]*\\)"
576 (1 font-lock-type-face t
) (4 font-lock-variable-name-face t
))
577 ;; Derived type/class variables.
578 ;; TODO ? If we just highlighted the "type" part, rather than
579 ;; "type(...)", this could be in the previous expression. And this
580 ;; would be consistent with integer( kind=8 ), etc.
581 '(f90-typedec-matcher
582 (1 font-lock-type-face
) (2 font-lock-variable-name-face
))
583 ;; "real function foo (args)". Must override previous. Note hack
584 ;; to get "args" unhighlighted again. Might not always be right,
585 ;; but probably better than leaving them as variables.
586 ;; NB not explicitly handling this case:
587 ;; integer( kind=1 ) function foo()
588 ;; thanks to the happy accident described above.
589 ;; Not anchored, so don't need to worry about "pure" etc.
590 '("\\<\\(\\(real\\|integer\\|c\\(haracter\\|omplex\\)\\|\
591 logical\\|double[ \t]*precision\\|\
592 \\(?:type\\|class\\)[ \t]*([ \t]*\\sw+[ \t]*)\\)[ \t]*\\)\
593 \\(function\\)\\>[ \t]*\\(\\sw+\\)[ \t]*\\(([^&!\n]*)\\)"
594 (1 font-lock-type-face t
) (4 font-lock-keyword-face t
)
595 (5 font-lock-function-name-face t
) (6 'default t
))
596 ;; enum (F2003; must be followed by ", bind(C)").
597 '("\\<\\(enum\\)[ \t]*," (1 font-lock-keyword-face
))
598 ;; end do, enum (F2003), if, select, where, and forall constructs.
599 ;; block, critical (F2008).
600 ;; Note that "block data" may get somewhat mixed up with F2008 blocks,
601 ;; but since the former is obsolete I'm not going to worry about it.
602 '("\\<\\(end[ \t]*\\(do\\|if\\|enum\\|select\\|forall\\|where\\|\
603 block\\|critical\\)\\)\\>\
604 \\([ \t]+\\(\\sw+\\)\\)?"
605 (1 font-lock-keyword-face
) (3 font-lock-constant-face nil t
))
606 '("^[ \t0-9]*\\(\\(\\sw+\\)[ \t]*:[ \t]*\\)?\\(\\(if\\|\
607 do\\([ \t]*while\\)?\\|select[ \t]*\\(?:case\\|type\\)\\|where\\|\
608 forall\\|block\\|critical\\)\\)\\>"
609 (2 font-lock-constant-face nil t
) (3 font-lock-keyword-face
))
610 ;; Implicit declaration.
611 '("\\<\\(implicit\\)[ \t]*\\(real\\|integer\\|c\\(haracter\\|omplex\\)\
612 \\|enumerator\\|procedure\\|\
613 logical\\|double[ \t]*precision\\|type[ \t]*(\\sw+)\\|none\\)[ \t]*"
614 (1 font-lock-keyword-face
) (2 font-lock-type-face
))
615 '("\\<\\(namelist\\|common\\)[ \t]*\/\\(\\sw+\\)?\/"
616 (1 font-lock-keyword-face
) (2 font-lock-constant-face nil t
))
617 "\\<else\\([ \t]*if\\|where\\)?\\>"
618 '("\\(&\\)[ \t]*\\(!\\|$\\)" (1 font-lock-keyword-face
))
619 "\\<\\(then\\|continue\\|format\\|include\\|stop\\|return\\)\\>"
620 '("\\<\\(exit\\|cycle\\)[ \t]*\\(\\sw+\\)?\\>"
621 (1 font-lock-keyword-face
) (2 font-lock-constant-face nil t
))
622 '("\\<\\(case\\)[ \t]*\\(default\\|(\\)" .
1)
623 ;; F2003 "class default".
624 '("\\<\\(class\\)[ \t]*default" .
1)
625 ;; F2003 "type is" in a "select type" block.
626 '("\\<\\(\\(type\\|class\\)[ \t]*is\\)[ \t]*(" (1 font-lock-keyword-face t
))
627 '("\\<\\(do\\|go[ \t]*to\\)\\>[ \t]*\\([0-9]+\\)"
628 (1 font-lock-keyword-face
) (2 font-lock-constant-face
))
629 ;; Line numbers (lines whose first character after number is letter).
630 '("^[ \t]*\\([0-9]+\\)[ \t]*[a-z]+" (1 font-lock-constant-face t
))
631 ;; Override eg for "#include".
632 '("^#[ \t]*\\w+" (0 font-lock-preprocessor-face t
)
633 ("\\<defined\\>" nil nil
(0 font-lock-preprocessor-face
)))
634 '("^#" ("\\(&&\\|||\\)" nil nil
(0 font-lock-constant-face t
)))
635 '("^#[ \t]*define[ \t]+\\(\\w+\\)(" (1 font-lock-function-name-face
))
636 '("^#[ \t]*define[ \t]+\\(\\w+\\)" (1 font-lock-variable-name-face
))
637 '("^#[ \t]*include[ \t]+\\(<.+>\\)" (1 font-lock-string-face
))))
638 "Highlights declarations, do-loops and other constructs.")
640 (defvar f90-font-lock-keywords-3
641 (append f90-font-lock-keywords-2
643 f90-keywords-level-3-re
645 ;; FIXME why isn't this font-lock-builtin-face, which
646 ;; otherwise we hardly use, as in fortran.el?
647 (list f90-procedures-re
'(1 font-lock-keyword-face keep
))
648 "\\<real\\>" ; avoid overwriting real defs
649 ;; As an attribute, but not as an optional argument.
650 '("\\<\\(asynchronous\\)[ \t]*[^=]" .
1)))
651 "Highlights all F90 keywords and intrinsic procedures.")
653 (defvar f90-font-lock-keywords-4
654 (append f90-font-lock-keywords-3
655 (list (cons f90-constants-re
'font-lock-constant-face
)
656 f90-hpf-keywords-re
))
657 "Highlights all F90 and HPF keywords and constants.")
659 (defvar f90-font-lock-keywords
660 f90-font-lock-keywords-2
661 "Default expressions to highlight in F90 mode.
662 Can be overridden by the value of `font-lock-maximum-decoration'.")
665 (defvar f90-mode-syntax-table
666 (let ((table (make-syntax-table)))
667 (modify-syntax-entry ?\
! "<" table
) ; begin comment
668 (modify-syntax-entry ?
\n ">" table
) ; end comment
669 ;; FIXME: This goes against the convention: it should be "_".
670 (modify-syntax-entry ?_
"w" table
) ; underscore in names
671 (modify-syntax-entry ?
\' "\"" table
) ; string quote
672 (modify-syntax-entry ?
\" "\"" table
) ; string quote
673 ;; FIXME: We used to set ` to word syntax for the benefit of abbrevs, but
674 ;; we do not need it any more. Not sure if it should be "_" or "." now.
675 (modify-syntax-entry ?\
` "_" table
)
676 (modify-syntax-entry ?
\r " " table
) ; return is whitespace
677 (modify-syntax-entry ?
+ "." table
) ; punctuation
678 (modify-syntax-entry ?-
"." table
)
679 (modify-syntax-entry ?
= "." table
)
680 (modify-syntax-entry ?
* "." table
)
681 (modify-syntax-entry ?
/ "." table
)
682 (modify-syntax-entry ?%
"." table
) ; bug#8820
683 ;; I think that the f95 standard leaves the behavior of \
684 ;; unspecified, but that f2k will require it to be non-special.
685 ;; Use `f90-backslash-not-special' to change.
686 (modify-syntax-entry ?
\\ "\\" table
) ; escape chars
688 "Syntax table used in F90 mode.")
691 (let ((map (make-sparse-keymap)))
692 (define-key map
"`" 'f90-abbrev-start
)
693 (define-key map
"\C-c;" 'f90-comment-region
)
694 (define-key map
"\C-\M-a" 'f90-beginning-of-subprogram
)
695 (define-key map
"\C-\M-e" 'f90-end-of-subprogram
)
696 (define-key map
"\C-\M-h" 'f90-mark-subprogram
)
697 (define-key map
"\C-\M-n" 'f90-end-of-block
)
698 (define-key map
"\C-\M-p" 'f90-beginning-of-block
)
699 (define-key map
"\C-\M-q" 'f90-indent-subprogram
)
700 (define-key map
"\C-j" 'f90-indent-new-line
) ; LFD equals C-j
701 ;;; (define-key map "\r" 'newline)
702 (define-key map
"\C-c\r" 'f90-break-line
)
703 ;;; (define-key map [M-return] 'f90-break-line)
704 (define-key map
"\C-c\C-a" 'f90-previous-block
)
705 (define-key map
"\C-c\C-e" 'f90-next-block
)
706 (define-key map
"\C-c\C-d" 'f90-join-lines
)
707 (define-key map
"\C-c\C-f" 'f90-fill-region
)
708 (define-key map
"\C-c\C-p" 'f90-previous-statement
)
709 (define-key map
"\C-c\C-n" 'f90-next-statement
)
710 (define-key map
"\C-c]" 'f90-insert-end
)
711 (define-key map
"\C-c\C-w" 'f90-insert-end
)
712 ;; Standard tab binding will call this, and also handle regions.
713 ;;; (define-key map "\t" 'f90-indent-line)
714 (define-key map
"," 'f90-electric-insert
)
715 (define-key map
"+" 'f90-electric-insert
)
716 (define-key map
"-" 'f90-electric-insert
)
717 (define-key map
"*" 'f90-electric-insert
)
718 (define-key map
"/" 'f90-electric-insert
)
720 (easy-menu-define f90-menu map
"Menu for F90 mode."
723 ,(custom-menu-create 'f90
)
725 ["Set" Custom-set
:active t
726 :help
"Set current value of all edited settings in the buffer"]
727 ["Save" Custom-save
:active t
728 :help
"Set and save all edited settings"]
729 ["Reset to Current" Custom-reset-current
:active t
730 :help
"Reset all edited settings to current"]
731 ["Reset to Saved" Custom-reset-saved
:active t
732 :help
"Reset all edited or set settings to saved"]
733 ["Reset to Standard Settings" Custom-reset-standard
:active t
734 :help
"Erase all customizations in buffer"]
737 ["Indent Subprogram" f90-indent-subprogram t
]
738 ["Mark Subprogram" f90-mark-subprogram
:active t
:help
739 "Mark the end of the current subprogram, move point to the start"]
740 ["Beginning of Subprogram" f90-beginning-of-subprogram
:active t
741 :help
"Move point to the start of the current subprogram"]
742 ["End of Subprogram" f90-end-of-subprogram
:active t
743 :help
"Move point to the end of the current subprogram"]
745 ["(Un)Comment Region" f90-comment-region
:active mark-active
746 :help
"Comment or uncomment the region"]
747 ["Indent Region" f90-indent-region
:active mark-active
]
748 ["Fill Region" f90-fill-region
:active mark-active
749 :help
"Fill long lines in the region"]
751 ["Break Line at Point" f90-break-line
:active t
752 :help
"Break the current line at point"]
753 ["Join with Previous Line" f90-join-lines
:active t
754 :help
"Join the current line to the previous one"]
755 ["Insert Block End" f90-insert-end
:active t
756 :help
"Insert an end statement for the current code block"]
759 :help
"Fontify this buffer to varying degrees"
760 ["Toggle font-lock-mode" font-lock-mode
:selected font-lock-mode
761 :style toggle
:help
"Fontify text in this buffer"]
763 ["Light highlighting (level 1)" f90-font-lock-1 t
]
764 ["Moderate highlighting (level 2)" f90-font-lock-2 t
]
765 ["Heavy highlighting (level 3)" f90-font-lock-3 t
]
766 ["Maximum highlighting (level 4)" f90-font-lock-4 t
]
768 ("Change Keyword Case"
769 :help
"Change the case of keywords in the buffer or region"
770 ["Upcase Keywords (buffer)" f90-upcase-keywords t
]
771 ["Capitalize Keywords (buffer)" f90-capitalize-keywords t
]
772 ["Downcase Keywords (buffer)" f90-downcase-keywords t
]
774 ["Upcase Keywords (region)" f90-upcase-region-keywords
776 ["Capitalize Keywords (region)" f90-capitalize-region-keywords
778 ["Downcase Keywords (region)" f90-downcase-region-keywords
782 ["Toggle Auto Fill" auto-fill-mode
:selected auto-fill-function
784 :help
"Automatically fill text while typing in this buffer"]
785 ["Toggle Abbrev Mode" abbrev-mode
:selected abbrev-mode
786 :style toggle
:help
"Expand abbreviations while typing in this buffer"]
787 ["Add Imenu Menu" f90-add-imenu-menu
788 :active
(not (lookup-key (current-local-map) [menu-bar index
]))
789 :included
(fboundp 'imenu-add-to-menubar
)
790 :help
"Add an index menu to the menu-bar"
793 "Keymap used in F90 mode.")
796 (defun f90-font-lock-n (n)
797 "Set `font-lock-keywords' to F90 level N keywords."
799 (setq font-lock-keywords
800 (symbol-value (intern-soft (format "f90-font-lock-keywords-%d" n
))))
801 (font-lock-fontify-buffer))
803 (defun f90-font-lock-1 ()
804 "Set `font-lock-keywords' to `f90-font-lock-keywords-1'."
808 (defun f90-font-lock-2 ()
809 "Set `font-lock-keywords' to `f90-font-lock-keywords-2'."
813 (defun f90-font-lock-3 ()
814 "Set `font-lock-keywords' to `f90-font-lock-keywords-3'."
818 (defun f90-font-lock-4 ()
819 "Set `font-lock-keywords' to `f90-font-lock-keywords-4'."
823 ;; Regexps for finding program structures.
824 (defconst f90-blocks-re
825 (concat "\\(block[ \t]*data\\|"
826 (regexp-opt '("do" "if" "interface" "function" "module" "program"
827 "select" "subroutine" "type" "where" "forall"
831 "submodule" "block" "critical"))
833 "Regexp potentially indicating a \"block\" of F90 code.")
835 (defconst f90-program-block-re
836 (regexp-opt '("program" "module" "subroutine" "function" "submodule") 'paren
)
837 "Regexp used to locate the start/end of a \"subprogram\".")
839 ;; "class is" is F2003.
840 (defconst f90-else-like-re
841 "\\(else\\([ \t]*if\\|where\\)?\\|case[ \t]*\\(default\\|(\\)\\|\
842 \\(class\\|type\\)[ \t]*is[ \t]*(\\|class[ \t]*default\\)"
843 "Regexp matching an ELSE IF, ELSEWHERE, CASE, CLASS/TYPE IS statement.")
845 (defconst f90-end-if-re
847 (regexp-opt '("if" "select" "where" "forall") 'paren
)
849 "Regexp matching the end of an IF, SELECT, WHERE, FORALL block.")
851 (defconst f90-end-type-re
852 "end[ \t]*\\(type\\|enum\\|interface\\|block[ \t]*data\\)\\>"
853 "Regexp matching the end of a TYPE, ENUM, INTERFACE, BLOCK DATA section.")
855 (defconst f90-end-associate-re
856 "end[ \t]*associate\\>"
857 "Regexp matching the end of an ASSOCIATE block.")
859 ;; This is for a TYPE block, not a variable of derived TYPE.
860 ;; Hence no need to add CLASS for F2003.
861 (defconst f90-type-def-re
864 ;; type, stuff :: word
865 ;; type, bind(c) :: word
867 "\\<\\(type\\)\\>\\(?:\\(?:[^()\n]*\\|\
868 .*,[ \t]*bind[ \t]*([ \t]*c[ \t]*)[ \t]*\\)::\\)?[ \t]*\\(\\sw+\\)"
869 "Regexp matching the definition of a derived type.")
871 (defconst f90-typeis-re
872 "\\<\\(class\\|type\\)[ \t]*is[ \t]*("
873 "Regexp matching a CLASS/TYPE IS statement.")
875 (defconst f90-no-break-re
876 (regexp-opt '("**" "//" "=>" ">=" "<=" "==" "/=" "(/" "/)") 'paren
)
877 "Regexp specifying two-character tokens not to split when breaking lines.
878 Each token has one or more of the characters from `f90-break-delimiters'.
879 Note that if only one of the characters is from that variable,
880 then the presence of the token here allows a line-break before or
881 after the other character, where a break would not normally be
882 allowed. This minor issue currently only affects \"(/\" and \"/)\".")
884 (defvar f90-cache-position nil
885 "Temporary position used to speed up region operations.")
886 (make-variable-buffer-local 'f90-cache-position
)
890 (defconst f90-end-block-re
891 (concat "^[ \t0-9]*\\<end[ \t]*"
892 (regexp-opt '("do" "if" "forall" "function" "interface"
893 "module" "program" "select" "subroutine"
894 "type" "where" "enum" "associate" "submodule"
895 "block" "critical") t
)
897 "Regexp matching the end of an F90 \"block\", from the line start.
898 Used in the F90 entry in `hs-special-modes-alist'.")
900 ;; Ignore the fact that FUNCTION, SUBROUTINE, WHERE, FORALL have a
901 ;; following "(". DO, CASE, IF can have labels.
902 (defconst f90-start-block-re
904 "^[ \t0-9]*" ; statement number
906 "\\(\\sw+[ \t]*:[ \t]*\\)?" ; structure label
907 "\\(do\\|select[ \t]*\\(case\\|type\\)\\|"
908 ;; See comments in fortran-start-block-re for the problems of IF.
910 ".*\n\\([^if]*\\([^i].\\|.[^f]\\|.\\>\\)\\)\\)\\<then\\|"
911 ;; Distinguish WHERE block from isolated WHERE.
912 "\\(where\\|forall\\)[ \t]*(.*)[ \t]*\\(!\\|$\\)\\)\\)"
914 ;; Avoid F2003 "type is" in "select type",
915 ;; and also variables of derived type "type (foo)".
916 ;; "type, foo" must be a block (?).
918 "[^i(!\n\"\& \t]\\|" ; not-i(
919 "i[^s!\n\"\& \t]\\|" ; i not-s
921 ;; "abstract interface" is F2003; "submodule" is F2008.
922 "program\\|\\(?:abstract[ \t]*\\)?interface\\|\\(?:sub\\)?module\\|"
923 ;; "enum", but not "enumerator".
924 "function\\|subroutine\\|enum[^e]\\|associate\\|block\\|critical"
927 "Regexp matching the start of an F90 \"block\", from the line start.
928 A simple regexp cannot do this in fully correct fashion, so this
929 tries to strike a compromise between complexity and flexibility.
930 Used in the F90 entry in `hs-special-modes-alist'.")
932 ;; hs-special-modes-alist is autoloaded.
933 (add-to-list 'hs-special-modes-alist
934 `(f90-mode ,f90-start-block-re
,f90-end-block-re
935 "!" f90-end-of-block nil
))
939 ;; FIXME trivial to extend this to enum. Worth it?
940 (defun f90-imenu-type-matcher ()
941 "Search backward for the start of a derived type.
942 Set subexpression 1 in the match-data to the name of the type."
944 (while (and (re-search-backward "^[ \t0-9]*type[ \t]*" nil t
)
947 (goto-char (match-end 0))
948 (unless (looking-at "\\(is\\>\\|(\\)")
949 (or (looking-at "\\(\\sw+\\)")
951 "[ \t]*::[ \t]*\\(\\sw+\\)"
952 (line-end-position) t
))))))))
955 (defvar f90-imenu-generic-expression
956 (let ((good-char "[^!\"\&\n \t]") (not-e "[^e!\n\"\& \t]")
957 (not-n "[^n!\n\"\& \t]") (not-d "[^d!\n\"\& \t]")
958 ;; (not-ib "[^i(!\n\"\& \t]") (not-s "[^s!\n\"\& \t]")
961 '(nil "^[ \t0-9]*program[ \t]+\\(\\sw+\\)" 1)
962 '("Submodules" "^[ \t0-9]*submodule[ \t]*([^)\n]+)[ \t]*\
963 \\(\\sw+\\)[ \t]*\\(!\\|$\\)" 1)
964 '("Modules" "^[ \t0-9]*module[ \t]+\\(\\sw+\\)[ \t]*\\(!\\|$\\)" 1)
965 (list "Types" 'f90-imenu-type-matcher
1)
966 ;; Does not handle: "type[, stuff] :: foo".
967 ;;; (format "^[ \t0-9]*type[ \t]+\\(\\(%s\\|i%s\\|is\\sw\\)\\sw*\\)"
970 ;; Can't get the subexpression numbers to match in the two branches.
971 ;;; (format "^[ \t0-9]*type\\([ \t]*,.*\\(::\\)[ \t]*\\(\\sw+\\)\\|[ \t]+\\(\\(%s\\|i%s\\|is\\sw\\)\\sw*\\)\\)" not-ib not-s)
978 ;; At least three non-space characters before function/subroutine.
979 ;; Check that the last three non-space characters do not spell E N D.
981 not-e good-char good-char
"\\|"
982 good-char not-n good-char
"\\|"
983 good-char good-char not-d
"\\)"
985 ;; Less than three non-space characters before function/subroutine.
986 good-char
"?" good-char
"?"
988 "[ \t]*\\(function\\|subroutine\\)[ \t]+\\(\\sw+\\)")
990 "Value for `imenu-generic-expression' in F90 mode.")
992 (defun f90-add-imenu-menu ()
993 "Add an imenu menu to the menubar."
995 (if (lookup-key (current-local-map) [menu-bar index
])
996 (message "%s" "F90-imenu already exists.")
997 (imenu-add-to-menubar "F90-imenu")
998 (redraw-frame (selected-frame))))
1001 ;; Abbrevs have generally two letters, except standard types `c, `i, `r, `t.
1002 (define-abbrev-table 'f90-mode-abbrev-table
1003 (mapcar (lambda (e) (list (car e
) (cdr e
) nil
:system t
))
1004 '(("`al" .
"allocate" )
1005 ("`ab" .
"allocatable" )
1006 ("`ai" .
"abstract interface")
1007 ("`as" .
"assignment" )
1008 ("`asy" .
"asynchronous" )
1009 ("`ba" .
"backspace" )
1010 ("`bd" .
"block data" )
1012 ("`c" .
"character" )
1015 ("`cx" .
"complex" )
1016 ("`cn" .
"contains" )
1017 ("`cr" .
"critical" )
1019 ("`de" .
"deallocate" )
1021 ("`di" .
"dimension" )
1022 ("`dp" .
"double precision")
1023 ("`dw" .
"do while" )
1025 ("`eli" .
"else if" )
1026 ("`elw" .
"elsewhere" )
1027 ("`em" .
"elemental" )
1028 ("`e" .
"enumerator" )
1029 ("`eq" .
"equivalence" )
1030 ("`ex" .
"external" )
1034 ("`fu" .
"function" )
1035 ("`fa" .
".false." )
1036 ("`im" .
"implicit none")
1037 ("`in" .
"include" )
1040 ("`if" .
"interface" )
1041 ("`lo" .
"logical" )
1043 ("`na" .
"namelist" )
1044 ("`nu" .
"nullify" )
1045 ("`op" .
"optional" )
1046 ("`pa" .
"parameter" )
1047 ("`po" .
"pointer" )
1049 ("`pi" .
"private" )
1050 ("`pm" .
"program" )
1051 ("`pr" .
"protected" )
1054 ("`rc" .
"recursive" )
1058 ("`sq" .
"sequence" )
1059 ("`su" .
"subroutine" )
1063 ("`vo" .
"volatile" )
1065 ("`wr" .
"write" )))
1066 "Abbrev table for F90 mode."
1067 ;; Accept ` as the first char of an abbrev. Also allow _ in abbrevs.
1068 :regexp
"\\(?:[^[:word:]_`]\\|^\\)\\(`?[[:word:]_]+\\)[^[:word:]_]*")
1071 (define-derived-mode f90-mode prog-mode
"F90"
1072 "Major mode for editing Fortran 90,95 code in free format.
1073 For fixed format code, use `fortran-mode'.
1075 \\[f90-indent-line] indents the current line.
1076 \\[f90-indent-new-line] indents current line and creates a new\
1078 \\[f90-indent-subprogram] indents the current subprogram.
1080 Type `? or `\\[help-command] to display a list of built-in\
1081 abbrevs for F90 keywords.
1086 Variables controlling indentation style and extra features:
1089 Extra indentation within do blocks (default 3).
1091 Extra indentation within if/select/where/forall blocks (default 3).
1093 Extra indentation within type/enum/interface/block-data blocks (default 3).
1094 `f90-program-indent'
1095 Extra indentation within program/module/subroutine/function blocks
1097 `f90-associate-indent'
1098 Extra indentation within associate blocks (default 2).
1099 `f90-critical-indent'
1100 Extra indentation within critical/block blocks (default 2).
1101 `f90-continuation-indent'
1102 Extra indentation applied to continuation lines (default 5).
1103 `f90-comment-region'
1104 String inserted by function \\[f90-comment-region] at start of each
1105 line in region (default \"!!!$\").
1106 `f90-indented-comment-re'
1107 Regexp determining the type of comment to be intended like code
1109 `f90-directive-comment-re'
1110 Regexp of comment-like directive like \"!HPF\\\\$\", not to be indented
1111 (default \"!hpf\\\\$\").
1112 `f90-break-delimiters'
1113 Regexp holding list of delimiters at which lines may be broken
1114 (default \"[-+*/><=,% \\t]\").
1115 `f90-break-before-delimiters'
1116 Non-nil causes `f90-do-auto-fill' to break lines before delimiters
1118 `f90-beginning-ampersand'
1119 Automatic insertion of \& at beginning of continuation lines (default t).
1121 From an END statement, check and fill the end using matching block start.
1122 Allowed values are 'blink, 'no-blink, and nil, which determine
1123 whether to blink the matching beginning (default 'blink).
1124 `f90-auto-keyword-case'
1125 Automatic change of case of keywords (default nil).
1126 The possibilities are 'downcase-word, 'upcase-word, 'capitalize-word.
1128 Do not left-justify line numbers (default nil).
1130 Turning on F90 mode calls the value of the variable `f90-mode-hook'
1131 with no args, if that value is non-nil."
1133 :abbrev-table f90-mode-abbrev-table
1134 (set (make-local-variable 'indent-line-function
) 'f90-indent-line
)
1135 (set (make-local-variable 'indent-region-function
) 'f90-indent-region
)
1136 (set (make-local-variable 'comment-start
) "!")
1137 (set (make-local-variable 'comment-start-skip
) "!+ *")
1138 (set (make-local-variable 'comment-indent-function
) 'f90-comment-indent
)
1139 (set (make-local-variable 'abbrev-all-caps
) t
)
1140 (set (make-local-variable 'normal-auto-fill-function
) 'f90-do-auto-fill
)
1141 (setq indent-tabs-mode nil
) ; auto buffer local
1142 (set (make-local-variable 'font-lock-defaults
)
1143 '((f90-font-lock-keywords f90-font-lock-keywords-1
1144 f90-font-lock-keywords-2
1145 f90-font-lock-keywords-3
1146 f90-font-lock-keywords-4
)
1148 (set (make-local-variable 'imenu-case-fold-search
) t
)
1149 (set (make-local-variable 'imenu-generic-expression
)
1150 f90-imenu-generic-expression
)
1151 (set (make-local-variable 'beginning-of-defun-function
)
1152 'f90-beginning-of-subprogram
)
1153 (set (make-local-variable 'end-of-defun-function
) 'f90-end-of-subprogram
)
1154 (set (make-local-variable 'add-log-current-defun-function
)
1155 #'f90-current-defun
))
1158 ;; Inline-functions.
1159 (defsubst f90-in-string
()
1160 "Return non-nil if point is inside a string.
1161 Checks from `point-min', or `f90-cache-position', if that is non-nil
1162 and lies before point."
1164 (if (and f90-cache-position
(> (point) f90-cache-position
))
1167 (nth 3 (parse-partial-sexp beg-pnt
(point)))))
1169 (defsubst f90-in-comment
()
1170 "Return non-nil if point is inside a comment.
1171 Checks from `point-min', or `f90-cache-position', if that is non-nil
1172 and lies before point."
1174 (if (and f90-cache-position
(> (point) f90-cache-position
))
1177 (nth 4 (parse-partial-sexp beg-pnt
(point)))))
1179 (defsubst f90-line-continued
()
1180 "Return t if the current line is a continued one.
1181 This includes comment lines embedded in continued lines, but
1182 not the last line of a continued statement."
1185 (while (and (looking-at "[ \t]*\\(!\\|$\\)") (zerop (forward-line -
1))))
1187 (while (f90-in-comment)
1188 (search-backward "!" (line-beginning-position))
1189 (skip-chars-backward "!"))
1190 (skip-chars-backward " \t")
1191 (= (preceding-char) ?
&)))
1193 ;; GM this is not right, eg a continuation line starting with a number.
1194 ;; Need f90-code-start-position function.
1195 ;; And yet, things seems to work with this...
1196 ;; cf f90-indent-line
1197 ;; (beginning-of-line) ; digits after & \n are not line-nos
1198 ;; (if (not (save-excursion (and (f90-previous-statement)
1199 ;; (f90-line-continued))))
1200 ;; (f90-indent-line-no)
1201 (defsubst f90-current-indentation
()
1202 "Return indentation of current line.
1203 Line-numbers are considered whitespace characters."
1204 (save-excursion (beginning-of-line) (skip-chars-forward " \t0-9")))
1206 (defsubst f90-indent-to
(col &optional no-line-number
)
1207 "Indent current line to column COL.
1208 If optional argument NO-LINE-NUMBER is nil, jump over a possible
1209 line-number before indenting."
1212 (skip-chars-forward " \t0-9"))
1213 (delete-horizontal-space)
1214 ;; Leave >= 1 space after line number.
1215 (indent-to col
(if (zerop (current-column)) 0 1)))
1217 (defsubst f90-get-present-comment-type
()
1218 "If point lies within a comment, return the string starting the comment.
1219 For example, \"!\" or \"!!\", followed by the appropriate amount of
1220 whitespace, if any."
1221 ;; Include the whitespace for consistent auto-filling of comment blocks.
1223 (when (f90-in-comment)
1225 (re-search-forward "!+[ \t]*" (line-end-position))
1226 (while (f90-in-string)
1227 (re-search-forward "!+[ \t]*" (line-end-position)))
1228 (match-string-no-properties 0))))
1230 (defsubst f90-equal-symbols
(a b
)
1231 "Compare strings A and B neglecting case and allowing for nil value."
1232 (equal (if a
(downcase a
) nil
)
1233 (if b
(downcase b
) nil
)))
1235 (defsubst f90-looking-at-do
()
1236 "Return (\"do\" NAME) if a do statement starts after point.
1237 NAME is nil if the statement has no label."
1238 (if (looking-at "\\(\\(\\sw+\\)[ \t]*:\\)?[ \t]*\\(do\\)\\>")
1239 (list (match-string 3) (match-string 2))))
1241 (defsubst f90-looking-at-select-case
()
1242 "Return (\"select\" NAME) if a select statement starts after point.
1243 NAME is nil if the statement has no label."
1244 (if (looking-at "\\(\\(\\sw+\\)[ \t]*:\\)?[ \t]*\
1245 \\(select\\)[ \t]*\\(case\\|type\\)[ \t]*(")
1246 (list (match-string 3) (match-string 2))))
1248 (defsubst f90-looking-at-if-then
()
1249 "Return (\"if\" NAME) if an if () then statement starts after point.
1250 NAME is nil if the statement has no label."
1252 (when (looking-at "\\(\\(\\sw+\\)[ \t]*:\\)?[ \t]*\\(if\\)\\>")
1253 (let ((struct (match-string 3))
1254 (label (match-string 2))
1255 (pos (scan-lists (point) 1 0)))
1256 (and pos
(goto-char pos
))
1257 (skip-chars-forward " \t")
1258 (if (or (looking-at "then\\>")
1259 (when (f90-line-continued)
1260 (f90-next-statement)
1261 (skip-chars-forward " \t0-9&")
1262 (looking-at "then\\>")))
1263 (list struct label
))))))
1266 (defsubst f90-looking-at-associate
()
1267 "Return (\"associate\") if an associate block starts after point."
1268 (if (looking-at "\\<\\(associate\\)[ \t]*(")
1269 (list (match-string 1))))
1271 (defsubst f90-looking-at-critical
()
1272 "Return (KIND NAME) if a critical or block block starts after point."
1273 (if (looking-at "\\(\\(\\sw+\\)[ \t]*:\\)?[ \t]*\\(critical\\|block\\)\\>")
1274 (let ((struct (match-string 3))
1275 (label (match-string 2)))
1276 (if (or (not (string-equal "block" struct
))
1278 (skip-chars-forward " \t")
1279 (not (looking-at "data\\>"))))
1280 (list struct label
)))))
1282 (defsubst f90-looking-at-end-critical
()
1283 "Return non-nil if a critical or block block ends after point."
1284 (if (looking-at "end[ \t]*\\(critical\\|block\\)\\>")
1285 (or (not (string-equal "block" (match-string 1)))
1287 (skip-chars-forward " \t")
1288 (not (looking-at "data\\>"))))))
1290 (defsubst f90-looking-at-where-or-forall
()
1291 "Return (KIND NAME) if a where or forall block starts after point.
1292 NAME is nil if the statement has no label."
1294 (when (looking-at "\\(\\(\\sw+\\)[ \t]*:\\)?[ \t]*\
1295 \\(where\\|forall\\)\\>")
1296 (let ((struct (match-string 3))
1297 (label (match-string 2))
1298 (pos (scan-lists (point) 1 0)))
1299 (and pos
(goto-char pos
))
1300 (skip-chars-forward " \t")
1301 (if (looking-at "\\(!\\|$\\)") (list struct label
))))))
1303 (defsubst f90-looking-at-type-like
()
1304 "Return (KIND NAME) if a type/enum/interface/block-data starts after point.
1305 NAME is non-nil only for type and certain interfaces."
1308 (and (looking-at "\\<type\\>[ \t]*")
1309 (goto-char (match-end 0))
1310 (not (looking-at "\\(is\\>\\|(\\)"))
1311 (or (looking-at "\\(\\sw+\\)")
1312 (re-search-forward "[ \t]*::[ \t]*\\(\\sw+\\)"
1313 (line-end-position) t
))))
1314 (list "type" (match-string 1)))
1315 ;;; ((and (not (looking-at f90-typeis-re))
1316 ;;; (looking-at f90-type-def-re))
1317 ;;; (list (match-string 1) (match-string 2)))
1318 ((looking-at "\\<\\(interface\\)\\>[ \t]*")
1319 (list (match-string 1)
1321 (goto-char (match-end 0))
1322 (if (or (looking-at "\\(operator\\|assignment\\|read\\|\
1323 write\\)[ \t]*([^)\n]*)")
1324 (looking-at "\\sw+"))
1325 (match-string 0)))))
1326 ((looking-at "\\(enum\\|block[ \t]*data\\)\\>")
1327 (list (match-string 1) nil
))
1328 ((looking-at "abstract[ \t]*\\(interface\\)\\>")
1329 (list (match-string 1) nil
))))
1331 (defsubst f90-looking-at-program-block-start
()
1332 "Return (KIND NAME) if a program block with name NAME starts after point."
1333 ;;;NAME is nil for an un-named main PROGRAM block."
1335 ((looking-at "\\(program\\)[ \t]+\\(\\sw+\\)\\>")
1336 (list (match-string 1) (match-string 2)))
1337 ((and (not (looking-at "module[ \t]*procedure\\>"))
1338 (looking-at "\\(module\\)[ \t]+\\(\\sw+\\)\\>"))
1339 (list (match-string 1) (match-string 2)))
1340 ((looking-at "\\(submodule\\)[ \t]*([^)\n]+)[ \t]*\\(\\sw+\\)\\>")
1341 (list (match-string 1) (match-string 2)))
1342 ((and (not (looking-at "end[ \t]*\\(function\\|subroutine\\)"))
1343 (looking-at "[^!'\"\&\n]*\\(function\\|subroutine\\)[ \t]+\
1345 (list (match-string 1) (match-string 2)))))
1346 ;; Following will match an un-named main program block; however
1347 ;; one needs to check if there is an actual PROGRAM statement after
1348 ;; point (and before any END program). Adding this will require
1349 ;; change to eg f90-calculate-indent.
1350 ;;; ((save-excursion
1351 ;;; (not (f90-previous-statement)))
1352 ;;; '("program" nil))))
1354 (defsubst f90-looking-at-program-block-end
()
1355 "Return (KIND NAME) if a block with name NAME ends after point."
1356 (cond ((looking-at "end[ \t]*\\(interface\\)[ \t]*\\(\
1357 \\(?:assignment\\|operator\\|read\\|write\\)[ \t]*([^)\n]*)\\)")
1358 (list (match-string 1) (match-string 2)))
1359 ((looking-at (concat "end[ \t]*" f90-blocks-re
1360 "?\\([ \t]+\\(\\sw+\\)\\)?\\>"))
1361 (list (match-string 1) (match-string 3)))))
1363 (defsubst f90-comment-indent
()
1364 "Return the indentation to be used for a comment starting at point.
1365 Used for `comment-indent-function' by F90 mode.
1366 \"!!!\", `f90-directive-comment-re', variable `f90-comment-region' return 0.
1367 `f90-indented-comment-re' (if not trailing code) calls `f90-calculate-indent'.
1368 All others return `comment-column', leaving at least one space after code."
1369 (cond ((looking-at "!!!") 0)
1370 ((and f90-directive-comment-re
1371 (looking-at f90-directive-comment-re
)) 0)
1372 ((looking-at (regexp-quote f90-comment-region
)) 0)
1373 ((and (looking-at f90-indented-comment-re
)
1374 ;; Don't attempt to indent trailing comment as code.
1376 (skip-chars-backward " \t")
1378 (f90-calculate-indent))
1380 (skip-chars-backward " \t")
1381 (max (if (bolp) 0 (1+ (current-column))) comment-column
)))))
1383 (defsubst f90-present-statement-cont
()
1384 "Return continuation properties of present statement.
1385 Possible return values are:
1386 single - statement is not continued.
1387 begin - current line is the first in a continued statement.
1388 end - current line is the last in a continued statement
1389 middle - current line is neither first nor last in a continued statement.
1390 Comment lines embedded amongst continued lines return 'middle."
1393 (setq pcont
(if (f90-previous-statement) (f90-line-continued))))
1394 (setq cont
(f90-line-continued))
1395 (cond ((and (not pcont
) (not cont
)) 'single
)
1396 ((and (not pcont
) cont
) 'begin
)
1397 ((and pcont
(not cont
)) 'end
)
1398 ((and pcont cont
) 'middle
)
1399 (t (error "The impossible occurred")))))
1401 (defsubst f90-indent-line-no
()
1402 "If `f90-leave-line-no' is nil, left-justify a line number.
1403 Leaves point at the first non-blank character after the line number.
1404 Call from beginning of line."
1405 (and (null f90-leave-line-no
) (looking-at "[ \t]+[0-9]")
1406 (delete-horizontal-space))
1407 (skip-chars-forward " \t0-9"))
1409 (defsubst f90-no-block-limit
()
1410 "Return nil if point is at the edge of a code block.
1411 Searches line forward for \"function\" or \"subroutine\",
1414 (not (or (looking-at "end")
1415 (looking-at "\\(do\\|if\\|else\\(if\\|where\\)?\
1416 \\|select[ \t]*\\(case\\|type\\)\\|case\\|where\\|forall\\|\
1417 block\\|critical\\)\\>")
1418 (looking-at "\\(program\\|\\(?:sub\\)?module\\|\
1419 \\(?:abstract[ \t]*\\)?interface\\|block[ \t]*data\\)\\>")
1420 (looking-at "\\(contains\\|\\sw+[ \t]*:\\)")
1421 (looking-at f90-type-def-re
)
1422 (re-search-forward "\\(function\\|subroutine\\)"
1423 (line-end-position) t
)))))
1425 (defsubst f90-update-line
()
1426 "Change case of current line as per `f90-auto-keyword-case'."
1427 (if f90-auto-keyword-case
1428 (f90-change-keywords f90-auto-keyword-case
1429 (line-beginning-position) (line-end-position))))
1431 (defun f90-electric-insert (&optional arg
)
1432 "Change keyword case and auto-fill line as operators are inserted."
1434 (self-insert-command arg
)
1435 (if auto-fill-function
(f90-do-auto-fill) ; also updates line
1438 ;; Behave like self-insert-command for delete-selection-mode (bug#5593).
1439 (put 'f90-electric-insert
'delete-selection t
)
1441 (defun f90-get-correct-indent ()
1442 "Get correct indent for a line starting with line number.
1443 Does not check type and subprogram indentation."
1444 (let ((epnt (line-end-position)) icol
)
1446 (while (and (f90-previous-statement)
1447 (or (memq (f90-present-statement-cont) '(middle end
))
1448 (looking-at "[ \t]*[0-9]"))))
1449 (setq icol
(current-indentation))
1451 (when (re-search-forward "\\(if\\|do\\|select\\|where\\|forall\\)"
1452 (line-end-position) t
)
1454 (skip-chars-forward " \t")
1455 (cond ((f90-looking-at-do)
1456 (setq icol
(+ icol f90-do-indent
)))
1457 ((or (f90-looking-at-if-then)
1458 (f90-looking-at-where-or-forall)
1459 (f90-looking-at-select-case))
1460 (setq icol
(+ icol f90-if-indent
)))
1461 ;; FIXME this makes no sense, because this section/function is
1462 ;; only for if/do/select/where/forall ?
1463 ((f90-looking-at-associate)
1464 (setq icol
(+ icol f90-associate-indent
))))
1466 (while (re-search-forward
1467 "\\(if\\|do\\|select\\|where\\|forall\\)" epnt t
)
1469 (skip-chars-forward " \t0-9")
1470 (cond ((f90-looking-at-do)
1471 (setq icol
(+ icol f90-do-indent
)))
1472 ((or (f90-looking-at-if-then)
1473 (f90-looking-at-where-or-forall)
1474 (f90-looking-at-select-case))
1475 (setq icol
(+ icol f90-if-indent
)))
1476 ;; FIXME this makes no sense, because this section/function is
1477 ;; only for if/do/select/where/forall ?
1478 ((f90-looking-at-associate)
1479 (setq icol
(+ icol f90-associate-indent
)))
1480 ((looking-at f90-end-if-re
)
1481 (setq icol
(- icol f90-if-indent
)))
1482 ((looking-at f90-end-associate-re
)
1483 (setq icol
(- icol f90-associate-indent
)))
1484 ((f90-looking-at-end-critical)
1485 (setq icol
(- icol f90-critical-indent
)))
1486 ((looking-at "end[ \t]*do\\>")
1487 (setq icol
(- icol f90-do-indent
))))
1491 (defun f90-calculate-indent ()
1492 "Calculate the indent column based on previous statements."
1494 (let (icol cont
(case-fold-search t
) (pnt (point)))
1496 (if (not (f90-previous-statement))
1497 ;; If f90-previous-statement returns nil, we must have been
1498 ;; called from on or before the first line of the first statement.
1499 (setq icol
(if (or (save-excursion
1502 ;; Preprocessor line before code statement.
1503 (looking-at "[ \t]*#"))
1505 ;; f90-previous-statement has moved us over
1506 ;; comment/blank lines, so we need to get
1507 ;; back to the first code statement.
1508 (when (looking-at "[ \t]*\\([!#]\\|$\\)")
1509 (f90-next-statement))
1510 (skip-chars-forward " \t0-9")
1511 (f90-looking-at-program-block-start)))
1513 ;; No explicit PROGRAM start statement.
1514 f90-program-indent
))
1515 (setq cont
(f90-present-statement-cont))
1517 (while (not (eq 'begin
(f90-present-statement-cont)))
1518 (f90-previous-statement)))
1519 (cond ((eq cont
'begin
)
1520 (setq icol
(+ (f90-current-indentation)
1521 f90-continuation-indent
)))
1522 ((eq cont
'middle
) (setq icol
(current-indentation)))
1523 (t (setq icol
(f90-current-indentation))
1524 (skip-chars-forward " \t")
1525 (if (looking-at "[0-9]")
1526 (setq icol
(f90-get-correct-indent))
1527 (cond ((or (f90-looking-at-if-then)
1528 (f90-looking-at-where-or-forall)
1529 (f90-looking-at-select-case)
1530 (looking-at f90-else-like-re
))
1531 (setq icol
(+ icol f90-if-indent
)))
1532 ((f90-looking-at-do)
1533 (setq icol
(+ icol f90-do-indent
)))
1534 ((f90-looking-at-type-like)
1535 (setq icol
(+ icol f90-type-indent
)))
1536 ((f90-looking-at-associate)
1537 (setq icol
(+ icol f90-associate-indent
)))
1538 ((f90-looking-at-critical)
1539 (setq icol
(+ icol f90-critical-indent
)))
1540 ((or (f90-looking-at-program-block-start)
1541 (looking-at "contains[ \t]*\\($\\|!\\)"))
1542 (setq icol
(+ icol f90-program-indent
)))))
1545 (cond ((looking-at "[ \t]*$"))
1546 ((looking-at "[ \t]*#") ; check for cpp directive
1549 (skip-chars-forward " \t0-9")
1550 (cond ((or (looking-at f90-else-like-re
)
1551 (looking-at f90-end-if-re
))
1552 (setq icol
(- icol f90-if-indent
)))
1553 ((looking-at "end[ \t]*do\\>")
1554 (setq icol
(- icol f90-do-indent
)))
1555 ((looking-at f90-end-type-re
)
1556 (setq icol
(- icol f90-type-indent
)))
1557 ((looking-at f90-end-associate-re
)
1558 (setq icol
(- icol f90-associate-indent
)))
1559 ((f90-looking-at-end-critical)
1560 (setq icol
(- icol f90-critical-indent
)))
1561 ((or (looking-at "contains[ \t]*\\(!\\|$\\)")
1562 (f90-looking-at-program-block-end))
1563 (setq icol
(- icol f90-program-indent
))))))))))
1566 (defun f90-previous-statement ()
1567 "Move point to beginning of the previous F90 statement.
1568 If no previous statement is found (i.e. if called from the first
1569 statement in the buffer), move to the start of the buffer and
1570 return nil. A statement is a line which is neither blank nor a
1573 (let (not-first-statement)
1575 (while (and (setq not-first-statement
(zerop (forward-line -
1)))
1576 (looking-at "[ \t0-9]*\\(!\\|$\\|#\\)")))
1577 not-first-statement
))
1579 (defun f90-next-statement ()
1580 "Move point to beginning of the next F90 statement.
1581 Return nil if no later statement is found."
1583 (let (not-last-statement)
1585 (while (and (setq not-last-statement
1586 (and (zerop (forward-line 1))
1588 (looking-at "[ \t0-9]*\\(!\\|$\\|#\\)")))
1589 not-last-statement
))
1591 (defun f90-beginning-of-subprogram ()
1592 "Move point to the beginning of the current subprogram.
1593 Return (TYPE NAME), or nil if not found."
1595 (let ((count 1) (case-fold-search t
) matching-beg
)
1597 (while (and (> count
0)
1598 (re-search-backward f90-program-block-re nil
'move
))
1600 (skip-chars-forward " \t0-9")
1601 (cond ((setq matching-beg
(f90-looking-at-program-block-start))
1602 (setq count
(1- count
)))
1603 ((f90-looking-at-program-block-end)
1604 (setq count
(1+ count
)))))
1608 ;; Note this includes the case of an un-named main program,
1609 ;; in which case we go to (point-min).
1610 (if (called-interactively-p 'interactive
)
1611 (message "No beginning found"))
1614 (defun f90-end-of-subprogram ()
1615 "Move point to the end of the current subprogram.
1616 Return (TYPE NAME), or nil if not found."
1618 (let ((case-fold-search t
)
1622 (while (and (> count
0)
1623 (re-search-forward f90-program-block-re nil
'move
))
1625 (skip-chars-forward " \t0-9")
1626 (cond ((f90-looking-at-program-block-start)
1627 (setq count
(1+ count
)))
1628 ((setq matching-end
(f90-looking-at-program-block-end))
1629 (setq count
(1- count
))))
1631 ;; This means f90-end-of-subprogram followed by f90-start-of-subprogram
1632 ;; has a net non-zero effect, which seems odd.
1633 ;;; (forward-line 1)
1636 (if (called-interactively-p 'interactive
)
1637 (message "No end found"))
1641 (defun f90-end-of-block (&optional num
)
1642 "Move point forward to the end of the current code block.
1643 With optional argument NUM, go forward that many balanced blocks.
1644 If NUM is negative, go backward to the start of a block. Checks
1645 for consistency of block types and labels (if present), and
1646 completes outermost block if `f90-smart-end' is non-nil.
1647 Interactively, pushes mark before moving point."
1649 ;; Can move some distance.
1650 (if (called-interactively-p 'any
) (push-mark (point) t
))
1651 (and num
(< num
0) (f90-beginning-of-block (- num
)))
1652 (let ((f90-smart-end (if f90-smart-end
'no-blink
)) ; for final match-end
1653 (case-fold-search t
)
1655 start-list start-this start-type start-label end-type end-label
)
1656 (end-of-line) ; probably want this
1657 (while (and (> count
0) (re-search-forward f90-blocks-re nil
'move
))
1659 (skip-chars-forward " \t0-9")
1660 (cond ((or (f90-in-string) (f90-in-comment)))
1664 (f90-looking-at-select-case)
1665 (f90-looking-at-type-like)
1666 (f90-looking-at-associate)
1667 (f90-looking-at-critical)
1668 (f90-looking-at-program-block-start)
1669 (f90-looking-at-if-then)
1670 (f90-looking-at-where-or-forall)))
1671 (setq start-list
(cons start-this start-list
) ; not add-to-list!
1673 ((looking-at (concat "end[ \t]*" f90-blocks-re
1674 "[ \t]*\\(\\sw+\\)?"))
1675 (setq end-type
(match-string 1)
1676 end-label
(match-string 2)
1678 ;; Check any internal blocks.
1680 (setq start-this
(car start-list
)
1681 start-list
(cdr start-list
)
1682 start-type
(car start-this
)
1683 start-label
(cadr start-this
))
1684 (or (f90-equal-symbols start-type end-type
)
1685 (error "End type `%s' does not match start type `%s'"
1686 end-type start-type
))
1687 (or (f90-equal-symbols start-label end-label
)
1688 (error "End label `%s' does not match start label `%s'"
1689 end-label start-label
)))))
1691 (if (> count
0) (error "Missing block end"))
1692 ;; Check outermost block.
1696 (skip-chars-forward " \t0-9")
1699 (defun f90-beginning-of-block (&optional num
)
1700 "Move point backwards to the start of the current code block.
1701 With optional argument NUM, go backward that many balanced blocks.
1702 If NUM is negative, go forward to the end of a block.
1703 Checks for consistency of block types and labels (if present).
1704 Does not check the outermost block, because it may be incomplete.
1705 Interactively, pushes mark before moving point."
1707 (if (called-interactively-p 'any
) (push-mark (point) t
))
1708 (and num
(< num
0) (f90-end-of-block (- num
)))
1709 (let ((case-fold-search t
)
1711 end-list end-this end-type end-label
1712 start-this start-type start-label
)
1713 (beginning-of-line) ; probably want this
1714 (while (and (> count
0) (re-search-backward f90-blocks-re nil
'move
))
1716 (skip-chars-forward " \t0-9")
1717 (cond ((or (f90-in-string) (f90-in-comment)))
1718 ((looking-at (concat "end[ \t]*" f90-blocks-re
1719 "[ \t]*\\(\\sw+\\)?"))
1720 (setq end-list
(cons (list (match-string 1) (match-string 2))
1726 (f90-looking-at-select-case)
1727 (f90-looking-at-type-like)
1728 (f90-looking-at-associate)
1729 (f90-looking-at-critical)
1730 (f90-looking-at-program-block-start)
1731 (f90-looking-at-if-then)
1732 (f90-looking-at-where-or-forall)))
1733 (setq start-type
(car start-this
)
1734 start-label
(cadr start-this
)
1736 ;; Check any internal blocks.
1738 (setq end-this
(car end-list
)
1739 end-list
(cdr end-list
)
1740 end-type
(car end-this
)
1741 end-label
(cadr end-this
))
1742 (or (f90-equal-symbols start-type end-type
)
1743 (error "Start type `%s' does not match end type `%s'"
1744 start-type end-type
))
1745 (or (f90-equal-symbols start-label end-label
)
1746 (error "Start label `%s' does not match end label `%s'"
1747 start-label end-label
))))))
1748 ;; Includes an un-named main program block.
1749 (if (> count
0) (error "Missing block start"))))
1751 (defun f90-next-block (&optional num
)
1752 "Move point forward to the next end or start of a code block.
1753 With optional argument NUM, go forward that many blocks.
1754 If NUM is negative, go backwards.
1755 A block is a subroutine, if-endif, etc."
1757 (let ((case-fold-search t
)
1758 (count (if num
(abs num
) 1)))
1759 (while (and (> count
0)
1760 (if (> num
0) (re-search-forward f90-blocks-re nil
'move
)
1761 (re-search-backward f90-blocks-re nil
'move
)))
1763 (skip-chars-forward " \t0-9")
1764 (cond ((or (f90-in-string) (f90-in-comment)))
1766 (looking-at "end[ \t]*")
1768 (f90-looking-at-select-case)
1769 (f90-looking-at-type-like)
1770 (f90-looking-at-associate)
1771 (f90-looking-at-critical)
1772 (f90-looking-at-program-block-start)
1773 (f90-looking-at-if-then)
1774 (f90-looking-at-where-or-forall))
1775 (setq count
(1- count
))))
1776 (if (> num
0) (end-of-line)
1777 (beginning-of-line)))))
1780 (defun f90-previous-block (&optional num
)
1781 "Move point backward to the previous end or start of a code block.
1782 With optional argument NUM, go backward that many blocks.
1783 If NUM is negative, go forwards.
1784 A block is a subroutine, if-endif, etc."
1786 (f90-next-block (- (or num
1))))
1789 (defun f90-mark-subprogram ()
1790 "Put mark at end of F90 subprogram, point at beginning, push mark."
1792 (let ((pos (point)) program
)
1793 (f90-end-of-subprogram)
1796 (setq program
(f90-beginning-of-subprogram))
1797 (if (featurep 'xemacs
)
1798 (zmacs-activate-region)
1800 deactivate-mark nil
))
1803 (defun f90-comment-region (beg-region end-region
)
1804 "Comment/uncomment every line in the region.
1805 Insert the variable `f90-comment-region' at the start of every line
1806 in the region, or, if already present, remove it."
1808 (let ((end (copy-marker end-region
)))
1809 (goto-char beg-region
)
1811 (if (looking-at (regexp-quote f90-comment-region
))
1812 (delete-region (point) (match-end 0))
1813 (insert f90-comment-region
))
1814 (while (and (zerop (forward-line 1))
1816 (if (looking-at (regexp-quote f90-comment-region
))
1817 (delete-region (point) (match-end 0))
1818 (insert f90-comment-region
)))
1819 (set-marker end nil
)))
1821 (defun f90-indent-line (&optional no-update
)
1822 "Indent current line as F90 code.
1823 Unless optional argument NO-UPDATE is non-nil, call `f90-update-line'
1826 (let ((case-fold-search t
)
1827 (pos (point-marker))
1828 indent no-line-number
)
1829 (beginning-of-line) ; digits after & \n are not line-nos
1830 (if (not (save-excursion (and (f90-previous-statement)
1831 (f90-line-continued))))
1832 (f90-indent-line-no)
1833 (setq no-line-number t
)
1834 (skip-chars-forward " \t"))
1835 (if (looking-at "!")
1836 (setq indent
(f90-comment-indent))
1837 (and f90-smart-end
(looking-at "end")
1839 (setq indent
(f90-calculate-indent)))
1840 (or (= indent
(current-column))
1841 (f90-indent-to indent no-line-number
))
1842 ;; If initial point was within line's indentation,
1843 ;; position after the indentation. Else stay at same point in text.
1844 (and (< (point) pos
)
1846 (if auto-fill-function
1847 ;; GM NO-UPDATE not honored, since this calls f90-update-line.
1849 (or no-update
(f90-update-line)))
1850 (set-marker pos nil
)))
1852 (defun f90-indent-new-line ()
1853 "Re-indent current line, insert a newline and indent the newline.
1854 An abbrev before point is expanded if the variable `abbrev-mode' is non-nil.
1855 If run in the middle of a line, the line is not broken."
1857 (if abbrev-mode
(expand-abbrev))
1858 (beginning-of-line) ; reindent where likely to be needed
1859 (f90-indent-line) ; calls indent-line-no, update-line
1861 (delete-horizontal-space) ; destroy trailing whitespace
1862 (let ((string (f90-in-string))
1863 (cont (f90-line-continued)))
1864 (and string
(not cont
) (insert "&"))
1866 (if (or string
(and cont f90-beginning-ampersand
)) (insert "&")))
1867 (f90-indent-line 'no-update
)) ; nothing to update
1870 ;; TODO not add spaces to empty lines at the start.
1871 ;; Why is second line getting extra indent over first?
1872 (defun f90-indent-region (beg-region end-region
)
1873 "Indent every line in region by forward parsing."
1875 (let ((end-region-mark (copy-marker end-region
))
1876 (save-point (point-marker))
1877 (case-fold-search t
)
1878 block-list ind-lev ind-curr ind-b cont struct beg-struct end-struct
)
1879 (goto-char beg-region
)
1880 ;; First find a line which is not a continuation line or comment.
1882 (while (and (looking-at "[ \t]*[0-9]*\\(!\\|#\\|[ \t]*$\\)")
1883 (progn (f90-indent-line 'no-update
)
1884 (zerop (forward-line 1)))
1885 (< (point) end-region-mark
)))
1886 (setq cont
(f90-present-statement-cont))
1887 (while (and (memq cont
'(middle end
))
1888 (f90-previous-statement))
1889 (setq cont
(f90-present-statement-cont)))
1890 ;; Process present line for beginning of block.
1891 (setq f90-cache-position
(point))
1892 (f90-indent-line 'no-update
)
1893 (setq ind-lev
(f90-current-indentation)
1896 (skip-chars-forward " \t0-9")
1898 ind-b
(cond ((setq struct
(f90-looking-at-do)) f90-do-indent
)
1899 ((or (setq struct
(f90-looking-at-if-then))
1900 (setq struct
(f90-looking-at-select-case))
1901 (setq struct
(f90-looking-at-where-or-forall))
1902 (looking-at f90-else-like-re
))
1904 ((setq struct
(f90-looking-at-type-like))
1906 ((setq struct
(f90-looking-at-associate))
1907 f90-associate-indent
)
1908 ((setq struct
(f90-looking-at-critical))
1909 f90-critical-indent
)
1910 ((or (setq struct
(f90-looking-at-program-block-start))
1911 (looking-at "contains[ \t]*\\($\\|!\\)"))
1912 f90-program-indent
)))
1913 (if ind-b
(setq ind-lev
(+ ind-lev ind-b
)))
1914 (if struct
(setq block-list
(cons struct block-list
)))
1915 (while (and (f90-line-continued) (zerop (forward-line 1))
1916 (< (point) end-region-mark
))
1917 (if (looking-at "[ \t]*!")
1918 (f90-indent-to (f90-comment-indent))
1919 (or (= (current-indentation)
1920 (+ ind-curr f90-continuation-indent
))
1921 (f90-indent-to (+ ind-curr f90-continuation-indent
) 'no-line-no
))))
1922 ;; Process all following lines.
1923 (while (and (zerop (forward-line 1)) (< (point) end-region-mark
))
1925 (f90-indent-line-no)
1926 (setq f90-cache-position
(point))
1927 (cond ((looking-at "[ \t]*$") (setq ind-curr
0))
1928 ((looking-at "[ \t]*#") (setq ind-curr
0))
1929 ((looking-at "!") (setq ind-curr
(f90-comment-indent)))
1930 ((f90-no-block-limit) (setq ind-curr ind-lev
))
1931 ((looking-at f90-else-like-re
) (setq ind-curr
1932 (- ind-lev f90-if-indent
)))
1933 ((looking-at "contains[ \t]*\\($\\|!\\)")
1934 (setq ind-curr
(- ind-lev f90-program-indent
)))
1936 (cond ((setq struct
(f90-looking-at-do)) f90-do-indent
)
1937 ((or (setq struct
(f90-looking-at-if-then))
1938 (setq struct
(f90-looking-at-select-case))
1939 (setq struct
(f90-looking-at-where-or-forall)))
1941 ((setq struct
(f90-looking-at-type-like))
1943 ((setq struct
(f90-looking-at-associate))
1944 f90-associate-indent
)
1945 ((setq struct
(f90-looking-at-critical))
1946 f90-critical-indent
)
1947 ((setq struct
(f90-looking-at-program-block-start))
1948 f90-program-indent
)))
1949 (setq ind-curr ind-lev
)
1950 (if ind-b
(setq ind-lev
(+ ind-lev ind-b
)))
1951 (setq block-list
(cons struct block-list
)))
1952 ((setq end-struct
(f90-looking-at-program-block-end))
1953 (setq beg-struct
(car block-list
)
1954 block-list
(cdr block-list
))
1957 (f90-block-match (car beg-struct
) (cadr beg-struct
)
1958 (car end-struct
) (cadr end-struct
))))
1960 (cond ((looking-at f90-end-if-re
) f90-if-indent
)
1961 ((looking-at "end[ \t]*do\\>") f90-do-indent
)
1962 ((looking-at f90-end-type-re
) f90-type-indent
)
1963 ((looking-at f90-end-associate-re
)
1964 f90-associate-indent
)
1965 ((f90-looking-at-end-critical) f90-critical-indent
)
1966 ((f90-looking-at-program-block-end)
1967 f90-program-indent
)))
1968 (if ind-b
(setq ind-lev
(- ind-lev ind-b
)))
1969 (setq ind-curr ind-lev
))
1970 (t (setq ind-curr ind-lev
)))
1971 ;; Do the indentation if necessary.
1972 (or (= ind-curr
(current-column))
1973 (f90-indent-to ind-curr
))
1974 (while (and (f90-line-continued) (zerop (forward-line 1))
1975 (< (point) end-region-mark
))
1976 (if (looking-at "[ \t]*!")
1977 (f90-indent-to (f90-comment-indent))
1978 (or (= (current-indentation)
1979 (+ ind-curr f90-continuation-indent
))
1981 (+ ind-curr f90-continuation-indent
) 'no-line-no
)))))
1982 ;; Restore point, etc.
1983 (setq f90-cache-position nil
)
1984 (goto-char save-point
)
1985 (set-marker end-region-mark nil
)
1986 (set-marker save-point nil
)
1987 (if (featurep 'xemacs
)
1988 (zmacs-deactivate-region)
1989 (deactivate-mark))))
1991 (defun f90-indent-subprogram ()
1992 "Properly indent the subprogram containing point."
1995 (let ((program (f90-mark-subprogram)))
1998 (message "Indenting %s %s..."
1999 (car program
) (cadr program
))
2000 (indent-region (point) (mark) nil
)
2001 (message "Indenting %s %s...done"
2002 (car program
) (cadr program
)))
2003 (message "Indenting the whole file...")
2004 (indent-region (point) (mark) nil
)
2005 (message "Indenting the whole file...done")))))
2007 (defun f90-break-line (&optional no-update
)
2008 "Break line at point, insert continuation marker(s) and indent.
2009 Unless in a string or comment, or if the optional argument NO-UPDATE
2010 is non-nil, call `f90-update-line' after inserting the continuation marker."
2012 (cond ((f90-in-string)
2015 (delete-horizontal-space) ; remove trailing whitespace
2016 (insert "\n" (f90-get-present-comment-type)))
2018 (or no-update
(f90-update-line))
2020 ;; FIXME also need leading ampersand if split lexical token (eg ==).
2021 ;; Or respect f90-no-break-re.
2022 (if f90-beginning-ampersand
(insert "&"))))
2023 (indent-according-to-mode))
2025 (defun f90-find-breakpoint ()
2026 "From `fill-column', search backward for break-delimiter."
2027 ;; Commented text more likely than commented code.
2028 (if (f90-in-comment)
2029 (re-search-backward "\\s-" (line-beginning-position))
2030 (re-search-backward f90-break-delimiters
(line-beginning-position))
2031 (if (not f90-break-before-delimiters
)
2032 (forward-char (if (looking-at f90-no-break-re
) 2 1))
2034 (or (looking-at f90-no-break-re
)
2037 (defun f90-do-auto-fill ()
2038 "Break line if non-white characters beyond `fill-column'.
2039 Update keyword case first."
2041 ;; Break line before or after last delimiter (non-word char) if
2042 ;; position is beyond fill-column.
2043 ;; Will not break **, //, or => (as specified by f90-no-break-re).
2045 ;; Need this for `f90-electric-insert' and other f90- callers.
2046 (unless (and (boundp 'comment-auto-fill-only-comments
)
2047 comment-auto-fill-only-comments
2048 (not (f90-in-comment)))
2049 (while (> (current-column) fill-column
)
2050 (let ((pos-mark (point-marker)))
2051 (move-to-column fill-column
)
2052 (or (f90-in-string) (f90-find-breakpoint))
2054 (goto-char pos-mark
)
2055 (set-marker pos-mark nil
)))))
2057 (defun f90-join-lines (&optional arg
)
2058 "Join current line to previous, fix whitespace, continuation, comments.
2059 With optional argument ARG, join current line to following line.
2060 Like `join-line', but handles F90 syntax."
2063 (if arg
(forward-line 1))
2064 (when (eq (preceding-char) ?
\n)
2065 (skip-chars-forward " \t")
2066 (if (looking-at "\&") (delete-char 1))
2068 (delete-region (point) (1- (point)))
2069 (skip-chars-backward " \t")
2070 (and (eq (preceding-char) ?
&) (delete-char -
1))
2071 (and (f90-in-comment)
2072 (looking-at "[ \t]*!+")
2075 (fixup-whitespace))))
2077 (defun f90-fill-region (beg-region end-region
)
2078 "Fill every line in region by forward parsing. Join lines if possible."
2080 (let ((end-region-mark (copy-marker end-region
))
2082 f90-smart-end f90-auto-keyword-case auto-fill-function
)
2083 (goto-char beg-region
)
2085 ;; Join as much as possible.
2088 (skip-chars-backward " \t")
2089 (eq (preceding-char) ?
&))
2090 (f90-join-lines 'forward
))
2091 ;; Chop the line if necessary.
2092 (while (> (save-excursion (end-of-line) (current-column))
2094 (move-to-column fill-column
)
2095 (f90-find-breakpoint)
2096 (f90-break-line 'no-update
))
2097 (setq go-on
(and (< (point) end-region-mark
)
2098 (zerop (forward-line 1)))
2099 f90-cache-position
(point)))
2100 (setq f90-cache-position nil
)
2101 (set-marker end-region-mark nil
)
2102 (if (featurep 'xemacs
)
2103 (zmacs-deactivate-region)
2104 (deactivate-mark))))
2106 (defun f90-block-match (beg-block beg-name end-block end-name
)
2107 "Match end-struct with beg-struct and complete end-block if possible.
2108 BEG-BLOCK is the type of block as indicated at the start (e.g., do).
2109 BEG-NAME is the block start name (may be nil).
2110 END-BLOCK is the type of block as indicated at the end (may be nil).
2111 END-NAME is the block end name (may be nil).
2112 Leave point at the end of line."
2113 ;; Hack to deal with the case when this is called from
2114 ;; f90-indent-region on a program block without an explicit PROGRAM
2115 ;; statement at the start. Should really be an error (?).
2116 (or beg-block
(setq beg-block
"program"))
2117 (search-forward "end" (line-end-position))
2119 (if (and end-block
(f90-equal-symbols beg-block end-block
))
2120 (search-forward end-block
)
2123 (message "END %s does not match %s." end-block beg-block
)
2125 (throw 'no-match nil
))
2126 (message "Inserting %s." beg-block
)
2127 (insert (concat " " beg-block
))))
2128 (if (f90-equal-symbols beg-name end-name
)
2129 (and end-name
(search-forward end-name
))
2130 (cond ((and beg-name
(not end-name
))
2131 (message "Inserting %s." beg-name
)
2132 (insert (concat " " beg-name
)))
2133 ((and beg-name end-name
)
2134 (message "Replacing %s with %s." end-name beg-name
)
2135 (search-forward end-name
)
2136 (replace-match beg-name
))
2137 ((and (not beg-name
) end-name
)
2138 (message "Deleting %s." end-name
)
2139 (search-forward end-name
)
2140 (replace-match ""))))
2141 (or (looking-at "[ \t]*!") (delete-horizontal-space))))
2143 (defun f90-match-end ()
2144 "From an end block statement, find the corresponding block and name."
2147 (top-of-window (window-start))
2149 (case-fold-search t
)
2150 matching-beg beg-name end-name beg-block end-block end-struct
)
2151 (when (save-excursion (beginning-of-line) (skip-chars-forward " \t0-9")
2152 (setq end-struct
(f90-looking-at-program-block-end)))
2153 (setq end-block
(car end-struct
)
2154 end-name
(cadr end-struct
))
2157 (while (and (> count
0)
2158 (not (= (line-beginning-position) (point-min))))
2159 (re-search-backward f90-blocks-re nil
'move
)
2161 ;; GM not a line number if continued line.
2162 ;;; (skip-chars-forward " \t")
2163 ;;; (skip-chars-forward "0-9")
2164 (skip-chars-forward " \t0-9")
2165 (cond ((or (f90-in-string) (f90-in-comment)))
2169 (f90-looking-at-if-then)
2170 (f90-looking-at-where-or-forall)
2171 (f90-looking-at-select-case)
2172 (f90-looking-at-type-like)
2173 (f90-looking-at-associate)
2174 (f90-looking-at-critical)
2175 (f90-looking-at-program-block-start)
2176 ;; Interpret a single END without a block
2177 ;; start to be the END of a program block
2178 ;; without an initial PROGRAM line.
2179 (if (= (line-beginning-position) (point-min))
2181 (setq count
(1- count
)))
2182 ((looking-at (concat "end[ \t]*" f90-blocks-re
))
2183 (setq count
(1+ count
)))))
2185 (message "No matching beginning.")
2187 (if (eq f90-smart-end
'blink
)
2188 (if (< (point) top-of-window
)
2189 (message "Matches %s: %s"
2192 (line-beginning-position)
2193 (line-end-position)))
2194 (sit-for blink-matching-delay
)))
2195 (setq beg-block
(car matching-beg
)
2196 beg-name
(cadr matching-beg
))
2197 (goto-char end-point
)
2199 (f90-block-match beg-block beg-name end-block end-name
))))))
2201 (defun f90-insert-end ()
2202 "Insert a complete end statement matching beginning of present block."
2204 (let ((f90-smart-end (or f90-smart-end
'blink
)))
2206 (f90-indent-new-line)))
2208 ;; Abbrevs and keywords.
2210 (defun f90-abbrev-start ()
2211 "Typing `\\[help-command] or `? lists all the F90 abbrevs.
2212 Any other key combination is executed normally."
2214 (self-insert-command 1)
2216 (set-temporary-overlay-map
2217 (let ((map (make-sparse-keymap)))
2218 (define-key map
[??
] 'f90-abbrev-help
)
2219 (define-key map
(vector help-char
) 'f90-abbrev-help
)
2222 (defun f90-abbrev-help ()
2223 "List the currently defined abbrevs in F90 mode."
2225 (message "Listing abbrev table...")
2226 (display-buffer (f90-prepare-abbrev-list-buffer))
2227 (message "Listing abbrev table...done"))
2229 (defun f90-prepare-abbrev-list-buffer ()
2230 "Create a buffer listing the F90 mode abbreviations."
2231 (with-current-buffer (get-buffer-create "*Abbrevs*")
2233 (insert-abbrev-table-description 'f90-mode-abbrev-table t
)
2234 (goto-char (point-min))
2235 (set-buffer-modified-p nil
)
2236 (edit-abbrevs-mode))
2237 (get-buffer-create "*Abbrevs*"))
2239 (defun f90-upcase-keywords ()
2240 "Upcase all F90 keywords in the buffer."
2242 (f90-change-keywords 'upcase-word
))
2244 (defun f90-capitalize-keywords ()
2245 "Capitalize all F90 keywords in the buffer."
2247 (f90-change-keywords 'capitalize-word
))
2249 (defun f90-downcase-keywords ()
2250 "Downcase all F90 keywords in the buffer."
2252 (f90-change-keywords 'downcase-word
))
2254 (defun f90-upcase-region-keywords (beg end
)
2255 "Upcase all F90 keywords in the region."
2257 (f90-change-keywords 'upcase-word beg end
))
2259 (defun f90-capitalize-region-keywords (beg end
)
2260 "Capitalize all F90 keywords in the region."
2262 (f90-change-keywords 'capitalize-word beg end
))
2264 (defun f90-downcase-region-keywords (beg end
)
2265 "Downcase all F90 keywords in the region."
2267 (f90-change-keywords 'downcase-word beg end
))
2269 ;; Change the keywords according to argument.
2270 (defun f90-change-keywords (change-word &optional beg end
)
2271 "Change the case of F90 keywords in the region (if specified) or buffer.
2272 CHANGE-WORD should be one of 'upcase-word, 'downcase-word, 'capitalize-word."
2274 (setq beg
(or beg
(point-min))
2275 end
(or end
(point-max)))
2278 f90-keywords-re
"\\|" f90-procedures-re
"\\|"
2279 f90-hpf-keywords-re
"\\|" f90-operators-re
"\\)"))
2280 (ref-point (point-min))
2281 (modified (buffer-modified-p))
2282 state saveword back-point
)
2285 (while (re-search-forward keyword-re end t
)
2287 (setq state
(parse-partial-sexp ref-point
(point)))
2288 (or (nth 3 state
) (nth 4 state
)
2289 ;; GM f90-directive-comment-re?
2290 (save-excursion ; check for cpp directive
2292 (skip-chars-forward " \t0-9")
2294 (setq ref-point
(point)
2295 back-point
(save-excursion (backward-word 1) (point))
2296 saveword
(buffer-substring back-point ref-point
))
2297 (funcall change-word -
1)
2298 (or (string= saveword
(buffer-substring back-point ref-point
))
2299 (setq modified t
))))
2300 (or modified
(restore-buffer-modified-p nil
))))))
2303 (defun f90-current-defun ()
2304 "Function to use for `add-log-current-defun-function' in F90 mode."
2306 (nth 1 (f90-beginning-of-subprogram))))
2308 (defun f90-backslash-not-special (&optional all
)
2309 "Make the backslash character (\\) be non-special in the current buffer.
2310 With optional argument ALL, change the default for all present
2311 and future F90 buffers. F90 mode normally treats backslash as an
2313 (or (derived-mode-p 'f90-mode
)
2314 (error "This function should only be used in F90 buffers"))
2315 (when (equal (char-syntax ?
\\ ) ?
\\ )
2316 (or all
(set-syntax-table (copy-syntax-table (syntax-table))))
2317 (modify-syntax-entry ?
\\ ".")))
2326 ;;; f90.el ends here