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be010748 1;;; f90.el --- Fortran-90 mode (free format)
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2;; Copyright (C) 1995 Free Software Foundation, Inc.
3
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4;; Author: Torbj\"orn Einarsson <T.Einarsson@clab.ericsson.se>
5;; Created: Sep. 21, 1995
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6;; Keywords: fortran, f90, languages
7
8;; This program is free software; you can redistribute it and/or modify
9;; it under the terms of the GNU General Public License as published by
10;; the Free Software Foundation; either version 2 of the License, or
11;; (at your option) any later version.
12
13;; This program is distributed in the hope that it will be useful,
14;; but WITHOUT ANY WARRANTY; without even the implied warranty of
15;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16;; GNU General Public License for more details.
17
18;; You should have received a copy of the GNU General Public License
19;; along with this program; if not, write to the Free Software
20;; Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
21
22;;; Commentary:
23;; Smart mode for editing F90 programs in FREE FORMAT.
24;; Knows about continuation lines, named structured statements, and other
25;; new features in F90 including HPF (High Performance Fortran) structures.
26;; The basic feature is to provide an accurate indentation of F90 programs.
27;; In addition, there are many more features like automatic matching of all
28;; end statements, an auto-fill function to break long lines, a join-lines
29;; function which joins continued lines etc etc.
30;; To facilitate typing, a fairly complete list of abbreviations is provided.
31;; For example, `i is short-hand for integer (if abbrev-mode is on).
32
33;; There are two separate features for highlighting the code.
34;; 1) Upcasing or capitalizing of all keywords.
ee30478d 35;; 2) Colors/fonts using font-lock-mode. (only when using X-windows)
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36;; Automatic upcase of downcase of keywords is controlled by the parameter
37;; f90-auto-keyword-case.
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38
39;; The indentations of lines starting with ! is determined by the first of the
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40;; following matches (the values in the left column are the default values):
41
42;; start-string/regexp indent variable holding start-string/regexp
43;; !!! 0
44;; !hpf\\$ (re) 0 f90-directive-comment-re
45;; !!$ 0 f90-comment-region
46;; ! (re) as code f90-indented-comment-re
47;; default comment-column
48
49;; Ex: Here is the result of 3 different settings of f90-indented-comment-re
50;; f90-indented-comment-re !-indentation !!-indentation
51;; ! as code as code
52;; !! comment-column as code
53;; ![^!] as code comment-column
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54;; Trailing comments are indented to comment-column with indent-for-comment M-;
55;; f90-comment-region (C-c;) toggles insertion of f90-comment-region in region.
56
57;; One common convention for free vs. fixed format is that free-format files
58;; have the ending .f90 while the fixed format files have the ending .f.
59;; To make f90-mode work, put this file in, for example, your directory
60;; ~/lisp, and be sure that you have the following in your .emacs-file
61;; (setq load-path (append load-path '("~/lisp")))
62;; (autoload 'f90-mode "f90"
63;; "Major mode for editing Fortran 90 code in free format." t)
64;; (setq auto-mode-alist (append auto-mode-alist
65;; (list '("\\.f90$" . f90-mode))))
66;; Once you have entered f90-mode, you may get more info by using
67;; the command describe-mode (C-h m). For online help describing various
68;; functions use C-h f <Name of function you want described>
69
70;; To customize the f90-mode for your taste, use, for example:
71;; (you don't have to specify values for all the parameters below)
72;;(setq f90-mode-hook
73;; '(lambda () (setq f90-do-indent 3
74;; f90-if-indent 3
75;; f90-type-indent 3
76;; f90-program-indent 2
77;; f90-continuation-indent 5
78;; f90-comment-region "!!$"
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79;; f90-directive-comment-re "!hpf\\$"
80;; f90-indented-comment-re "!"
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81;; f90-break-delimiters "[-+\\*/,><=% \t]"
82;; f90-break-before-delimiters t
83;; f90-beginning-ampersand t
84;; f90-smart-end 'blink
85;; f90-auto-keyword-case nil
034a9d40 86;; f90-leave-line-no nil
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87;; f90-startup-message t
88;; indent-tabs-mode nil
89;; )
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90;; ;;The rest is not default.
91;; (abbrev-mode 1) ; turn on abbreviation mode
92;; (f90-auto-fill-mode 1) ; turn on auto-filling
ee30478d 93;; (turn-on-font-lock) ; for highlighting
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94;; (if f90-auto-keyword-case ; change case of all keywords on startup
95;; (f90-change-keywords f90-auto-keyword-case))
96;; ))
97;; in your .emacs file (the shown values are the defaults). You can also
98;; change the values of the lists f90-keywords etc.
99;; The auto-fill and abbreviation minor modes are accessible from the menu,
100;; or by using M-x f90-auto-fill-mode and M-x abbrev-mode, respectively.
101
102;; Remarks
103;; 1) Line numbers are by default left-justified. If f90-leave-line-no is
104;; non-nil, the line numbers are never touched.
105;; 2) Multi-; statements like > do i=1,20 ; j=j+i ; end do < are not handled
106;; correctly, but I imagine them to be rare.
ee30478d 107;; 3) Regexps for hilit19 are no longer supported.
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108;; 4) For FIXED FORMAT code, use the ordinary fortran mode.
109;; 5) This mode does not work under emacs-18.x.
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110;; 6) Preprocessor directives, i.e., lines starting with # are left-justified
111;; and are untouched by all case-changing commands. There is, at present, no
112;; mechanism for treating multi-line directives (continued by \ ).
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113;; 7) f77 do-loops do 10 i=.. ; ; 10 continue are not correctly indented.
114;; You are urged to use f90-do loops (with labels if you wish).
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115
116;; List of user commands
117;; f90-previous-statement f90-next-statement
118;; f90-beginning-of-subprogram f90-end-of-subprogram f90-mark-subprogram
119;; f90-comment-region
120;; f90-indent-line f90-indent-new-line
121;; f90-indent-region (can be called by calling indent-region)
122;; f90-indent-subprogram
123;; f90-break-line f90-join-lines
124;; f90-auto-fill-mode
125;; f90-fill-region
126;; f90-insert-end
127;; f90-upcase-keywords f90-upcase-region-keywords
128;; f90-downcase-keywords f90-downcase-region-keywords
129;; f90-capitalize-keywords f90-capitalize-region-keywords
130
131;; Thanks to all the people who have tested the mode. Special thanks to Jens
132;; Bloch Helmers for encouraging me to write this code, for creative
133;; suggestions as well as for the lists of hpf-commands.
134;; Also thanks to the authors of the fortran and pascal modes, on which some
135;; of this code is built.
136
ee30478d 137
034a9d40 138;;; Code:
ee30478d 139(defconst bug-f90-mode "T.Einarsson@clab.ericsson.se"
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140 "Address of mailing list for F90 mode bugs.")
141
142;; User options
143(defvar f90-do-indent 3
144 "*Extra indentation applied to DO blocks.")
145
146(defvar f90-if-indent 3
147 "*Extra indentation applied to IF, SELECT CASE, WHERE and FORALL blocks.")
148
149(defvar f90-type-indent 3
150 "*Extra indentation applied to TYPE, INTERFACE and BLOCK DATA blocks.")
151
152(defvar f90-program-indent 2
153 "*Extra indentation applied to PROGRAM/MODULE/SUBROUTINE/FUNCTION blocks.")
154
155(defvar f90-continuation-indent 5
156 "*Extra indentation applied to F90 continuation lines.")
157
158(defvar f90-comment-region "!!$"
159 "*String inserted by \\[f90-comment-region]\
160 at start of each line in region.")
161
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162(defvar f90-indented-comment-re "!"
163 "*Regexp saying which comments to be indented like code.")
034a9d40 164
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165(defvar f90-directive-comment-re "!hpf\\$"
166 "*Regexp of comment-like directive like \"!HPF\\\\$\", not to be indented.")
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167
168(defvar f90-beginning-ampersand t
169 "*t makes automatic insertion of \& at beginning of continuation line.")
170
171(defvar f90-smart-end 'blink
172 "*From an END statement, check and fill the end using matching block start.
173Allowed values are 'blink, 'no-blink, and nil, which determine
174whether to blink the matching beginning.")
175
176(defvar f90-break-delimiters "[-+\\*/><=,% \t]"
177 "*Regexp holding list of delimiters at which lines may be broken.")
178
179(defvar f90-break-before-delimiters t
180 "*Non-nil causes `f90-do-auto-fill' to break lines before delimiters.")
181
182(defvar f90-auto-keyword-case nil
183 "*Automatic case conversion of keywords.
184 The options are 'downcase-word, 'upcase-word, 'capitalize-word and nil")
185
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186(defvar f90-leave-line-no nil
187 "*If nil, left-justify linenumbers.")
188
189(defvar f90-startup-message t
190 "*Non-nil displays a startup message when F90 mode is first called.")
191
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192(defconst f90-keywords-re
193 ;;("allocate" "allocatable" "assign" "assignment" "backspace" "block"
194 ;;"call" "case" "character" "close" "common" "complex" "contains"
195 ;;"continue" "cycle" "data" "deallocate" "dimension" "do" "double" "else"
196 ;;"elseif" "elsewhere" "end" "enddo" "endfile" "endif" "entry" "equivalence"
197 ;;"exit" "external" "forall" "format" "function" "goto" "if" "implicit"
198 ;;"include" "inquire" "integer" "intent" "interface" "intrinsic" "logical"
199 ;;"module" "namelist" "none" "nullify" "only" "open" "optional" "parameter"
200 ;;"pause" "pointer" "precision" "print" "private" "procedure" "program"
201 ;;"public" "read" "real" "recursive" "return" "rewind" "save" "select"
202 ;;"sequence" "stop" "subroutine" "target" "then" "type" "use" "where"
203 ;;"while" "write")
204 (concat
205 "\\<\\(a\\(llocat\\(able\\|e\\)\\|ssign\\(\\|ment\\)\\)\\|b\\(ackspace\\|"
206 "lock\\)\\|c\\(a\\(ll\\|se\\)\\|haracter\\|lose\\|o\\(m\\(mon\\|plex\\)\\|"
207 "nt\\(ains\\|inue\\)\\)\\|ycle\\)\\|d\\(ata\\|eallocate\\|imension\\|"
208 "o\\(\\|uble\\)\\)\\|e\\(lse\\(\\|if\\|where\\)\\|n\\(d\\(\\|do\\|file\\|"
209 "if\\)\\|try\\)\\|quivalence\\|x\\(it\\|ternal\\)\\)\\|f\\(or\\(all\\|"
210 "mat\\)\\|unction\\)\\|goto\\|i\\(f\\|mplicit\\|n\\(clude\\|quire\\|t\\("
211 "e\\(ger\\|nt\\|rface\\)\\|rinsic\\)\\)\\)\\|logical\\|module\\|n\\("
212 "amelist\\|one\\|ullify\\)\\|o\\(nly\\|p\\(en\\|tional\\)\\)\\|p\\(a\\("
213 "rameter\\|use\\)\\|ointer\\|r\\(ecision\\|i\\(nt\\|vate\\)\\|o\\("
214 "cedure\\|gram\\)\\)\\|ublic\\)\\|re\\(a[dl]\\|cursive\\|turn\\|wind\\)\\|"
215 "s\\(ave\\|e\\(lect\\|quence\\)\\|top\\|ubroutine\\)\\|t\\(arget\\|hen\\|"
216 "ype\\)\\|use\\|w\\(h\\(ere\\|ile\\)\\|rite\\)\\)\\>")
217 "Regexp for F90 keywords.")
218
219(defconst f90-keywords-level-3-re
220 ;; ("allocate" "allocatable" "assign" "assignment" "backspace" "close"
221 ;; "deallocate" "endfile" "entry" "equivalence" "external" "inquire" "intent"
222 ;; "intrinsic" "only" "open" "optional" "parameter" "pause" "pointer" "print"
223 ;; "private" "public" "read" "recursive" "rewind" "save" "select" "sequence"
224 ;; "target" "write")
225 (concat
226 "\\<\\(a\\(llocat\\(able\\|e\\)\\|ssign\\(\\|ment\\)\\)\\|backspace\\|"
227 "close\\|deallocate\\|e\\(n\\(dfile\\|try\\)\\|quivalence\\|xternal\\)\\|"
228 "in\\(quire\\|t\\(ent\\|rinsic\\)\\)\\|o\\(nly\\|p\\(en\\|tional\\)\\)\\|"
229 "p\\(a\\(rameter\\|use\\)\\|ointer\\|ri\\(nt\\|vate\\)\\|ublic\\)\\|re\\("
230 "ad\\|cursive\\|wind\\)\\|s\\(ave\\|e\\(lect\\|quence\\)\\)\\|target\\|"
231 "write\\)\\>")
232"Keyword-regexp for font-lock level >= 3.")
233
234
235(defconst f90-procedures-re
236 ;; ("abs" "achar" "acos" "adjustl" "adjustr" "aimag" "aint" "all" "allocated"
237 ;; "anint" "any" "asin" "associated" "atan" "atan2" "bit_size" "btest"
238 ;; "ceiling" "char" "cmplx" "conjg" "cos" "cosh" "count" "cshift"
239 ;; "date_and_time" "dble" "digits" "dim" "dot_product" "dprod" "eoshift"
240 ;; "epsilon" "exp" "exponent" "floor" "fraction" "huge" "iachar" "iand"
241 ;; "ibclr" "ibits" "ibset" "ichar" "ieor" "index" "int" "ior" "ishft"
242 ;; "ishftc" "kind" "lbound" "len" "len_trim" "lge" "lgt" "lle" "llt" "log"
243 ;; "logical" "log10" "matmul" "max" "maxexponent" "maxloc" "maxval" "merge"
244 ;; "min" "minexponent" "minloc" "minval" "mod" "modulo" "mvbits" "nearest"
245 ;; "nint" "not" "pack" "precision" "present" "product" "radix"
246 ;; "random_number" "random_seed" "range" "real" "repeat" "reshape"
247 ;; "rrspacing" "scale" "scan" "selected_int_kind" "selected_real_kind"
248 ;; "set_exponent" "shape" "sign" "sin" "sinh" "size" "spacing" "spread"
249 ;; "sqrt" "sum" "system_clock" "tan" "tanh" "tiny" "transfer" "transpose"
250 ;; "trim" "ubound" "unpack" "verify")
251 ;; A left paranthesis to avoid highlighting non-procedures.
252 ;; Real is taken out here to avoid highlighting declarations.
253 (concat
254 "\\<\\(a\\(bs\\|c\\(har\\|os\\)\\|djust[lr]\\|i\\(mag\\|nt\\)\\|ll\\(\\|"
255 "ocated\\)\\|n\\(int\\|y\\)\\|s\\(in\\|sociated\\)\\|tan2?\\)\\|b\\("
256 "it_size\\|test\\)\\|c\\(eiling\\|har\\|mplx\\|o\\(njg\\|sh?\\|unt\\)\\|"
257 "shift\\)\\|d\\(ate_and_time\\|ble\\|i\\(gits\\|m\\)\\|ot_product\\|prod"
258 "\\)\\|e\\(oshift\\|psilon\\|xp\\(\\|onent\\)\\)\\|f\\(loor\\|"
259 "raction\\)\\|huge\\|i\\(a\\(char\\|nd\\)\\|b\\(clr\\|its\\|set\\)\\|"
260 "char\\|eor\\|n\\(dex\\|t\\)\\|or\\|shftc?\\)\\|kind\\|l\\(bound\\|"
261 "en\\(\\|_trim\\)\\|g[et]\\|l[et]\\|og\\(\\|10\\|ical\\)\\)\\|m\\(a\\("
262 "tmul\\|x\\(\\|exponent\\|loc\\|val\\)\\)\\|erge\\|in\\(\\|exponent\\|"
263 "loc\\|val\\)\\|od\\(\\|ulo\\)\\|vbits\\)\\|n\\(earest\\|int\\|ot\\)\\|"
264 "p\\(ack\\|r\\(e\\(cision\\|sent\\)\\|oduct\\)\\)\\|r\\(a\\(dix\\|n\\("
265 "dom_\\(number\\|seed\\)\\|ge\\)\\)\\|e\\(peat\\|shape\\)\\|rspacing\\)\\|"
266 "s\\(ca\\(le\\|n\\)\\|e\\(lected_\\(int_kind\\|real_kind\\)\\|"
267 "t_exponent\\)\\|hape\\|i\\(gn\\|nh?\\|ze\\)\\|p\\(acing\\|read\\)\\|"
268 "qrt\\|um\\|ystem_clock\\)\\|t\\(anh?\\|iny\\|r\\(ans\\(fer\\|pose\\)\\|"
269 "im\\)\\)\\|u\\(bound\\|npack\\)\\|verify\\)[ \t]*(")
270 "Regexp whose first part matches F90 intrinsic procedures.")
271
272(defconst f90-operators-re
273;; "and" "or" "not" "eqv" "neqv" "eq" "ne" "lt" "le" "gt" "ge" "true" "false"
274 (concat
275 "\\.\\(and\\|eqv?\\|false\\|g[et]\\|l[et]\\|n\\(e\\(\\|qv\\)\\|"
276 "ot\\)\\|or\\|true\\)\\.")
277 "Regexp matching intrinsic operators.")
278
279(defconst f90-hpf-keywords-re
280 ;; Intrinsic procedures
281 ;; ("all_prefix" "all_scatter" "all_suffix" "any_prefix" "any_scatter"
282 ;; "any_suffix" "copy_prefix" "copy_scatter" "copy_suffix" "count_prefix"
283 ;; "count_scatter" "count_suffix" "grade_down" "grade_up" "hpf_alignment"
284 ;; "hpf_template" "hpf_distribution" "iall" "iall_prefix" "iall_scatter"
285 ;; "iall_suffix" "iany" "iany_prefix" "iany_scatter" "iany_suffix" "iparity"
286 ;; "iparity_prefix" "iparity_scatter" "iparity_suffix" "leadz"
287 ;; "maxval_prefix" "maxval_scatter" "maxval_suffix" "minval_prefix"
288 ;; "minval_scatter" "minval_suffix" "parity" "parity_prefix"
289 ;; "parity_scatter" "parity_suffix" "popcnt" "poppar" "product_prefix"
290 ;; "product_scatter" "product_suffix" "sum_prefix" "sum_scatter"
291 ;; "sum_suffix" "ilen" "number_of_processors" "processors_shape")
292 ;; Directives
293 ;; ("align" "distribute" "dynamic" "inherit" "template" "processors"
294 ;; "realign" "redistribute" "independent")
295 ;; Keywords
296 ;; ("pure" "extrinsic" "new" "with" "onto" "block" "cyclic")
297 (concat
298 "\\<\\(a\\(l\\(ign\\|l_\\(prefix\\|s\\(catter\\|uffix\\)\\)\\)\\|ny_\\("
299 "prefix\\|s\\(catter\\|uffix\\)\\)\\)\\|block\\|c\\(o\\(py_\\(prefix\\|"
300 "s\\(catter\\|uffix\\)\\)\\|unt_\\(prefix\\|s\\(catter\\|uffix\\)\\)\\)\\|"
301 "yclic\\)\\|d\\(istribute\\|ynamic\\)\\|extrinsic\\|grade_\\(down\\|"
302 "up\\)\\|hpf_\\(alignment\\|distribution\\|template\\)\\|i\\(a\\(ll\\(\\|"
303 "_\\(prefix\\|s\\(catter\\|uffix\\)\\)\\)\\|ny\\(\\|_\\(prefix\\|s\\("
304 "catter\\|uffix\\)\\)\\)\\)\\|len\\|n\\(dependent\\|herit\\)\\|parity\\(\\|"
305 "_\\(prefix\\|s\\(catter\\|uffix\\)\\)\\)\\)\\|leadz\\|m\\(axval_\\("
306 "prefix\\|s\\(catter\\|uffix\\)\\)\\|inval_\\(prefix\\|s\\(catter\\|"
307 "uffix\\)\\)\\)\\|n\\(ew\\|umber_of_processors\\)\\|onto\\|p\\(arity\\(\\|"
308 "_\\(prefix\\|s\\(catter\\|uffix\\)\\)\\)\\|op\\(cnt\\|par\\)\\|ro\\("
309 "cessors\\(\\|_shape\\)\\|duct_\\(prefix\\|s\\(catter\\|uffix\\)\\)\\)\\|"
310 "ure\\)\\|re\\(align\\|distribute\\)\\|sum_\\(prefix\\|s\\(catter\\|"
311 "uffix\\)\\)\\|template\\|with\\)\\>")
312 "Regexp for all HPF keywords, procedures and directives.")
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313
314;; Highlighting patterns
315
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316(defvar f90-font-lock-keywords-1
317 (if (string-match "XEmacs" emacs-version)
318 (list ; XEmacs
319 '("\\<\\(end[ \t]*\\(program\\|module\\|function\\|subroutine\\|type\\)\\)\\>"
320 1 font-lock-keyword-face)
321 '("\\<\\(end[ \t]*\\(program\\|module\\|function\\|subroutine\\|type\\)\\)\\>[ \t]*\\(\\sw+\\)"
322 3 font-lock-function-name-face)
323 '("\\<\\(program\\|call\\|module\\|subroutine\\|function\\|use\\)\\>"
324 1 font-lock-keyword-face)
325 '("\\<\\(program\\|call\\|module\\|subroutine\\|function\\|use\\)\\>[ \t]*\\(\\sw+\\)"
326 2 font-lock-function-name-face nil t)
327 ;; Special highlighting of "module procedure foo-list"
328 '("\\<\\(module[ \t]*procedure\\)\\>" 1 font-lock-keyword-face t)
329 ;; Highlight definition of new type
330 '("\\<\\(type\\)[ \t]*\\(,.*::[ \t]*\\|[ \t]+\\)\\(\\sw+\\)"
331 1 font-lock-keyword-face)
332 '("\\<\\(type\\)[ \t]*\\(,.*::[ \t]*\\|[ \t]+\\)\\(\\sw+\\)"
333 3 font-lock-function-name-face)
334 "\\<\\(\\(end[ \t]*\\)?\\(interface\\|block[ \t]*data\\)\\|contains\\)\\>")
335 (list ; Emacs
336 '("\\<\\(end[ \t]*\\(program\\|module\\|function\\|subroutine\\|type\\)\\)\\>[ \t]*\\(\\sw+\\)?"
337 (1 font-lock-keyword-face) (3 font-lock-function-name-face nil t))
338 '("\\<\\(program\\|call\\|module\\|subroutine\\|function\\|use\\)\\>[ \t]*\\(\\sw+\\)?"
339 (1 font-lock-keyword-face) (2 font-lock-function-name-face nil t))
340 ;; Special highlighting of "module procedure foo-list"
341 '("\\<\\(module[ \t]*procedure\\)\\>" (1 font-lock-keyword-face t))
342 ;; Highlight definition of new type
343 '("\\<\\(type\\)[ \t]*\\(,.*::[ \t]*\\|[ \t]+\\)\\(\\sw+\\)"
344 (1 font-lock-keyword-face) (3 font-lock-function-name-face))
345 "\\<\\(\\(end[ \t]*\\)?\\(interface\\|block[ \t]*data\\)\\|contains\\)\\>"))
346 "This does fairly subdued highlighting of comments and function calls.")
347
348(defvar f90-font-lock-keywords-2
349 (append f90-font-lock-keywords-1
350 (if (string-match "XEmacs" emacs-version)
351 (list ; XEmacs
352 ;; Variable declarations (avoid the real function call)
353 '("^[ \t0-9]*\\(real\\|integer\\|c\\(haracter\\|omplex\\)\\|logical\\|type[ \t]*(\\sw+)\\)"
354 1 font-lock-type-face)
355 '("^[ \t0-9]*\\(real\\|integer\\|c\\(haracter\\|omplex\\)\\|logical\\|type[ \t]*(\\sw+)\\)\\(.*::\\|[ \t]*(.*)\\)?\\(.*\\)"
356 4 font-lock-doc-string-face)
357 ;; do, if and select constructs
358 '("\\<\\(end[ \t]*\\(do\\|if\\|select\\)\\)\\>"
359 1 font-lock-keyword-face)
360 '("\\<\\(end[ \t]*\\(do\\|if\\|select\\)\\)\\>\\([ \t]+\\(\\sw+\\)\\)"
361 3 font-lock-doc-string-face)
362 '("^[ \t0-9]*\\(\\(\\sw+\\)[ \t]*:[ \t]*\\)\\(\\(if\\|do\\([ \t]*while\\)?\\|select[ \t]*case\\)\\)\\>"
363 2 font-lock-doc-string-face)
364 '("^[ \t0-9]*\\(\\(\\sw+\\)[ \t]*:[ \t]*\\)?\\(\\(if\\|do\\([ \t]*while\\)?\\|select[ \t]*case\\)\\)\\>"
365 3 font-lock-keyword-face)
366 ;; implicit declaration
367 '("\\<\\(implicit\\)[ \t]*\\(real\\|integer\\|c\\(haracter\\|omplex\\)\\|logical\\|type[ \t]*(\\sw+)\\|none\\)\\>"
368 1 font-lock-keyword-face)
369 '("\\<\\(implicit\\)[ \t]*\\(real\\|integer\\|c\\(haracter\\|omplex\\)\\|logical\\|type[ \t]*(\\sw+)\\|none\\)\\>"
370 2 font-lock-type-face)
371 '("\\<\\(namelist\\|common\\)[ \t]*\/\\(\\sw+\\)?\/"
372 1 font-lock-keyword-face)
373 '("\\<\\(namelist\\|common\\)[ \t]*\/\\(\\sw+\\)\/"
374 2 font-lock-doc-string-face nil t)
375 '("\\<\\(where\\|forall\\)[ \t]*(" . 1)
376 "\\<e\\(lse\\([ \t]*if\\|where\\)?\\|nd[ \t]*\\(where\\|forall\\)\\)\\>"
377 "\\<\\(then\\|continue\\|format\\|include\\|stop\\|return\\)\\>"
378 '("\\<\\(exit\\|cycle\\)\\>"
379 1 font-lock-keyword-face)
380 '("\\<\\(exit\\|cycle\\)[ \t]*\\(\\sw+\\)2\\>"
381 2 font-lock-doc-string-face)
382 '("\\<\\(case\\)[ \t]+\\(default\\|(\\)" . 1)
383 '("\\<\\(do\\|go *to\\)\\>[ \t]*\\([0-9]+\\)"
384 1 font-lock-keyword-face)
385 '("\\<\\(do\\|go *to\\)\\>[ \t]*\\([0-9]+\\)"
386 2 font-lock-doc-string-face)
387 '("^[ \t]*\\([0-9]+\\)" 1 font-lock-doc-string-face t))
388 (list ; Emacs
389 ;; Variable declarations (avoid the real function call)
390 '("^[ \t0-9]*\\(real\\|integer\\|c\\(haracter\\|omplex\\)\\|logical\\|type[ \t]*(\\sw+)\\)\\(.*::\\|[ \t]*(.*)\\)?\\(.*\\)"
391 (1 font-lock-type-face) (4 font-lock-variable-name-face))
392 ;; do, if and select constructs
393 '("\\<\\(end[ \t]*\\(do\\|if\\|select\\)\\)\\>\\([ \t]+\\(\\sw+\\)\\)?"
394 (1 font-lock-keyword-face) (3 font-lock-reference-face nil t))
395 '("^[ \t0-9]*\\(\\(\\sw+\\)[ \t]*:[ \t]*\\)?\\(\\(if\\|do\\([ \t]*while\\)?\\|select[ \t]*case\\)\\)\\>"
396 (2 font-lock-reference-face nil t) (3 font-lock-keyword-face))
397 ;; implicit declaration
398 '("\\<\\(implicit\\)[ \t]*\\(real\\|integer\\|c\\(haracter\\|omplex\\)\\|logical\\|type[ \t]*(\\sw+)\\|none\\)\\>" (1 font-lock-keyword-face) (2 font-lock-type-face))
399 '("\\<\\(namelist\\|common\\)[ \t]*\/\\(\\sw+\\)?\/" (1 font-lock-keyword-face) (2 font-lock-reference-face nil t))
400 '("\\<\\(where\\|forall\\)[ \t]*(" . 1)
401 "\\<e\\(lse\\([ \t]*if\\|where\\)?\\|nd[ \t]*\\(where\\|forall\\)\\)\\>"
402 "\\<\\(then\\|continue\\|format\\|include\\|stop\\|return\\)\\>"
403 '("\\<\\(exit\\|cycle\\)[ \t]*\\(\\sw+\\)?\\>"
404 (1 font-lock-keyword-face) (2 font-lock-reference-face nil t))
405 '("\\<\\(case\\)[ \t]+\\(default\\|(\\)" . 1)
406 '("\\<\\(do\\|go *to\\)\\>[ \t]*\\([0-9]+\\)"
407 (1 font-lock-keyword-face) (2 font-lock-reference-face))
408 '("^[ \t]*\\([0-9]+\\)" (1 font-lock-reference-face t)))))
409 "Highlights declarations, do-loops and other constructions")
410
411(defvar f90-font-lock-keywords-3
412 (append f90-font-lock-keywords-2
034a9d40 413 (list
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414 f90-keywords-level-3-re
415 f90-operators-re
416 (if (string-match "XEmacs" emacs-version)
417 (append (list f90-procedures-re) '(1 font-lock-keyword-face t))
418 (list f90-procedures-re '(1 font-lock-keyword-face t)))
419 "\\<real\\>" ; Avoid overwriting real defs.
420 ))
421 "Highlights all F90 keywords and intrinsic procedures.")
422
423(defvar f90-font-lock-keywords-4
424 (append f90-font-lock-keywords-3
425 (list f90-hpf-keywords-re))
426 "Highlights all F90 and HPF keywords.")
427
428(defvar f90-font-lock-keywords
429 f90-font-lock-keywords-2
430 "*Default expressions to highlight in F90 mode.")
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431
432;; syntax table
433(defvar f90-mode-syntax-table nil
434 "Syntax table in use in F90 mode buffers.")
435
436(if f90-mode-syntax-table
437 ()
438 (setq f90-mode-syntax-table (make-syntax-table))
439 (modify-syntax-entry ?\! "<" f90-mode-syntax-table) ; beg. comment
440 (modify-syntax-entry ?\n ">" f90-mode-syntax-table) ; end comment
441 (modify-syntax-entry ?_ "w" f90-mode-syntax-table) ; underscore in names
442 (modify-syntax-entry ?\' "\"" f90-mode-syntax-table) ; string quote
443 (modify-syntax-entry ?\" "\"" f90-mode-syntax-table) ; string quote
444 (modify-syntax-entry ?\` "w" f90-mode-syntax-table) ; for abbrevs
445 (modify-syntax-entry ?\r " " f90-mode-syntax-table) ; return is whitespace
446 (modify-syntax-entry ?+ "." f90-mode-syntax-table)
447 (modify-syntax-entry ?- "." f90-mode-syntax-table)
448 (modify-syntax-entry ?= "." f90-mode-syntax-table)
449 (modify-syntax-entry ?* "." f90-mode-syntax-table)
450 (modify-syntax-entry ?/ "." f90-mode-syntax-table)
451 (modify-syntax-entry ?\\ "/" f90-mode-syntax-table)) ; escape chars
452
453;; keys
454(defvar f90-mode-map ()
455 "Keymap used in F90 mode.")
ee30478d 456
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457(if f90-mode-map
458 ()
459 (setq f90-mode-map (make-sparse-keymap))
460 (define-key f90-mode-map "`" 'f90-abbrev-start)
461 (define-key f90-mode-map "\C-c;" 'f90-comment-region)
462 (define-key f90-mode-map "\C-\M-a" 'f90-beginning-of-subprogram)
463 (define-key f90-mode-map "\C-\M-e" 'f90-end-of-subprogram)
464 (define-key f90-mode-map "\C-\M-h" 'f90-mark-subprogram)
465 (define-key f90-mode-map "\C-\M-q" 'f90-indent-subprogram)
466 (define-key f90-mode-map "\C-j" 'f90-indent-new-line) ; LFD equals C-j
467 (define-key f90-mode-map "\r" 'newline)
468 (define-key f90-mode-map "\C-c\r" 'f90-break-line)
469 ;; (define-key f90-mode-map [M-return] 'f90-break-line)
470 (define-key f90-mode-map "\C-c\C-d" 'f90-join-lines)
471 (define-key f90-mode-map "\C-c\C-f" 'f90-fill-region)
472 (define-key f90-mode-map "\C-c\C-p" 'f90-previous-statement)
473 (define-key f90-mode-map "\C-c\C-n" 'f90-next-statement)
474 (define-key f90-mode-map "\C-c\C-w" 'f90-insert-end)
475 (define-key f90-mode-map "\t" 'f90-indent-line))
ee30478d 476
034a9d40 477;; menus
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478(if (string-match "XEmacs" emacs-version)
479 (defvar f90-xemacs-menu
480 '("F90"
481 ["Indent Subprogram" f90-indent-subprogram t]
482 ["Mark Subprogram" f90-mark-subprogram t]
483 ["Beginning of Subprogram" f90-beginning-of-subprogram t]
484 ["End of Subprogram" f90-end-of-subprogram t]
485 "-----"
486 ["(Un)Comment Region" f90-comment-region t]
487 ["Indent Region" indent-region t]
488 ["Fill Region" f90-fill-region t]
489 "-----"
490 ["Break Line at Point" f90-break-line t]
491 ["Join with Next Line" f90-join-lines t]
492 ["Insert Newline" newline t]
493 ["Insert End" f90-insert-end t]
494 "-----"
495 ["Upcase Keywords (buffer)" f90-upcase-keywords t]
496 ["Upcase Keywords (region)" f90-upcase-region-keywords
497 t]
498 ["Capitalize Keywords (buffer)" f90-capitalize-keywords t]
499 ["Capitalize Keywords (region)"
500 f90-capitalize-region-keywords t]
501 ["Downcase Keywords (buffer)" f90-downcase-keywords t]
502 ["Downcase Keywords (region)"
503 f90-downcase-region-keywords t]
504 "-----"
505 ["Toggle abbrev-mode" abbrev-mode t]
506 ["Toggle auto-fill" f90-auto-fill-mode t])
507 "XEmacs menu for F90 mode.")
db97b872 508 ;; Emacs
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509 (define-key f90-mode-map [menu-bar] (make-sparse-keymap))
510 (define-key f90-mode-map [menu-bar f90]
511 (cons "F90" (make-sparse-keymap "f90")))
512 (define-key f90-mode-map [menu-bar f90 abbrev-mode]
513 '("Toggle abbrev-mode" . abbrev-mode))
514 (define-key f90-mode-map [menu-bar f90 f90-auto-fill-mode]
515 '("Toggle auto-fill" . f90-auto-fill-mode))
516 (define-key f90-mode-map [menu-bar f90 f90-downcase-region-keywords]
658e4ee5 517 '("Downcase Keywords (region)" . f90-downcase-region-keywords))
034a9d40 518 (define-key f90-mode-map [menu-bar f90 f90-downcase-keywords]
658e4ee5 519 '("Downcase Keywords (buffer)" . f90-downcase-keywords))
034a9d40 520 (define-key f90-mode-map [menu-bar f90 f90-capitalize-keywords]
658e4ee5 521 '("Capitalize Keywords (region)" . f90-capitalize-region-keywords))
034a9d40 522 (define-key f90-mode-map [menu-bar f90 f90-capitalize-region-keywords]
658e4ee5 523 '("Capitalize Keywords (buffer)" . f90-capitalize-keywords))
034a9d40 524 (define-key f90-mode-map [menu-bar f90 f90-upcase-region-keywords]
ee30478d 525 '("Upcase Keywords (region)" . f90-upcase-region-keywords))
034a9d40 526 (define-key f90-mode-map [menu-bar f90 f90-upcase-keywords]
ee30478d 527 '("Upcase Keywords (buffer)" . f90-upcase-keywords))
034a9d40 528 (define-key f90-mode-map [menu-bar f90 f90-insert-end]
658e4ee5 529 '("Insert end" . f90-insert-end))
034a9d40 530 (define-key f90-mode-map [menu-bar f90 f90-join-lines]
658e4ee5 531 '("Join with Next Line" . f90-join-lines))
034a9d40 532 (define-key f90-mode-map [menu-bar f90 f90-break-line]
658e4ee5 533 '("Break Line at Point" . f90-break-line))
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534 (define-key f90-mode-map [menu-bar f90 f90-fill-region]
535 '("Fill Region" . f90-fill-region))
536 (define-key f90-mode-map [menu-bar f90 indent-region]
537 '("Indent Region" . indent-region))
538 (define-key f90-mode-map [menu-bar f90 f90-comment-region]
539 '("(Un)Comment Region" . f90-comment-region))
540 (define-key f90-mode-map [menu-bar f90 f90-end-of-subprogram]
541 '("End of Subprogram" . f90-end-of-subprogram))
542 (define-key f90-mode-map [menu-bar f90 f90-beginning-of-subprogram]
543 '("Beginning of Subprogram" . f90-beginning-of-subprogram))
544 (define-key f90-mode-map [menu-bar f90 f90-mark-subprogram]
545 '("Mark Subprogram" . f90-mark-subprogram))
546 (define-key f90-mode-map [menu-bar f90 f90-indent-subprogram]
547 '("Indent Subprogram" . f90-indent-subprogram)))
548
ee30478d 549;; Regexps for finding program structures.
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550(defconst f90-blocks-re
551 "\\(block[ \t]*data\\|do\\|if\\|interface\\|function\\|module\\|\
552program\\|select\\|subroutine\\|type\\|where\\|forall\\)\\>")
553(defconst f90-program-block-re
554 "\\(program\\|module\\|subroutine\\|function\\)")
555(defconst f90-else-like-re
ee30478d 556 "\\(else\\([ \t]*if\\|where\\)?\\|case[ \t]*\\(default\\|(\\)\\)\\>")
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557(defconst f90-end-if-re
558 "end[ \t]*\\(if\\|select\\|where\\|forall\\)\\>")
559(defconst f90-end-type-re
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560 "end[ \t]*\\(type\\|interface\\|block[ \t]*data\\)")
561(defconst f90-type-def-re
562 "\\<\\(type\\)[ \t]*\\(,.*::[ \t]*\\|[ \t]+\\)\\(\\sw+\\)")
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563(defconst f90-no-break-re "\\(\\*\\*\\|//\\|=>\\)")
564;; A temporary position to make region operators faster
565(defvar f90-cache-position nil)
566(make-variable-buffer-local 'f90-cache-position)
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567
568;; Imenu support
569(defvar f90-imenu-generic-expression
570 (cons
571 (concat
572 "^[ \t0-9]*\\("
573 "program[ \t]+\\(\\sw+\\)\\|"
574 "module[ \t]+\\(\\sw+\\)[ \t]*\\(!\\|$\\)\\|"
575 "\\(recursive[ \t]*\\)?subroutine[ \t]+\\(\\sw+\\)\\|"
576 ; avoid end function, but allow for most other things
577 "\\([^!]*\\([^e!].[^ \t!]\\|.[^n!][^ \t!]\\|..[^d \t!]\\)"
578 "\\|[^!]?[^!]?\\)[ \t]*function[ \t]+\\(\\sw+\\)"
579 "\\)")
580 (list 2 3 6 9))
581 "imenu generic expression for F90 mode.")
582
583;; When compiling under GNU Emacs, load imenu during compilation. If
584;; you have 19.22 or earlier, comment this out, or get imenu.
585(and (fboundp 'eval-when-compile)
586 (eval-when-compile
587 (if (not (string-match "XEmacs" emacs-version))
588 (require 'imenu))
589 ()))
590
591
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592\f
593;; abbrevs have generally two letters, except standard types `c, `i, `r, `t
594(defvar f90-mode-abbrev-table nil)
595(if f90-mode-abbrev-table
596 ()
597 (let ((ac abbrevs-changed))
598 (define-abbrev-table 'f90-mode-abbrev-table ())
599 (define-abbrev f90-mode-abbrev-table "`al" "allocate" nil)
ee30478d 600 (define-abbrev f90-mode-abbrev-table "`ab" "allocatable" nil)
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601 (define-abbrev f90-mode-abbrev-table "`as" "assignment" nil)
602 (define-abbrev f90-mode-abbrev-table "`ba" "backspace" nil)
603 (define-abbrev f90-mode-abbrev-table "`bd" "block data" nil)
604 (define-abbrev f90-mode-abbrev-table "`c" "character" nil)
605 (define-abbrev f90-mode-abbrev-table "`cl" "close" nil)
606 (define-abbrev f90-mode-abbrev-table "`cm" "common" nil)
607 (define-abbrev f90-mode-abbrev-table "`cx" "complex" nil)
608 (define-abbrev f90-mode-abbrev-table "`cn" "contains" nil)
609 (define-abbrev f90-mode-abbrev-table "`cy" "cycle" nil)
610 (define-abbrev f90-mode-abbrev-table "`de" "deallocate" nil)
611 (define-abbrev f90-mode-abbrev-table "`df" "define" nil)
612 (define-abbrev f90-mode-abbrev-table "`di" "dimension" nil)
613 (define-abbrev f90-mode-abbrev-table "`dw" "do while" nil)
614 (define-abbrev f90-mode-abbrev-table "`el" "else" nil)
615 (define-abbrev f90-mode-abbrev-table "`eli" "else if" nil)
616 (define-abbrev f90-mode-abbrev-table "`elw" "elsewhere" nil)
617 (define-abbrev f90-mode-abbrev-table "`eq" "equivalence" nil)
618 (define-abbrev f90-mode-abbrev-table "`ex" "external" nil)
619 (define-abbrev f90-mode-abbrev-table "`ey" "entry" nil)
620 (define-abbrev f90-mode-abbrev-table "`fl" "forall" nil)
621 (define-abbrev f90-mode-abbrev-table "`fo" "format" nil)
622 (define-abbrev f90-mode-abbrev-table "`fu" "function" nil)
623 (define-abbrev f90-mode-abbrev-table "`fa" ".false." nil)
624 (define-abbrev f90-mode-abbrev-table "`im" "implicit none" nil)
625 (define-abbrev f90-mode-abbrev-table "`in " "include" nil)
626 (define-abbrev f90-mode-abbrev-table "`i" "integer" nil)
627 (define-abbrev f90-mode-abbrev-table "`it" "intent" nil)
628 (define-abbrev f90-mode-abbrev-table "`if" "interface" nil)
629 (define-abbrev f90-mode-abbrev-table "`lo" "logical" nil)
630 (define-abbrev f90-mode-abbrev-table "`mo" "module" nil)
631 (define-abbrev f90-mode-abbrev-table "`na" "namelist" nil)
632 (define-abbrev f90-mode-abbrev-table "`nu" "nullify" nil)
633 (define-abbrev f90-mode-abbrev-table "`op" "optional" nil)
634 (define-abbrev f90-mode-abbrev-table "`pa" "parameter" nil)
635 (define-abbrev f90-mode-abbrev-table "`po" "pointer" nil)
636 (define-abbrev f90-mode-abbrev-table "`pr" "print" nil)
637 (define-abbrev f90-mode-abbrev-table "`pi" "private" nil)
638 (define-abbrev f90-mode-abbrev-table "`pm" "program" nil)
639 (define-abbrev f90-mode-abbrev-table "`pu" "public" nil)
640 (define-abbrev f90-mode-abbrev-table "`r" "real" nil)
641 (define-abbrev f90-mode-abbrev-table "`rc" "recursive" nil)
642 (define-abbrev f90-mode-abbrev-table "`rt" "return" nil)
643 (define-abbrev f90-mode-abbrev-table "`rw" "rewind" nil)
644 (define-abbrev f90-mode-abbrev-table "`se" "select" nil)
645 (define-abbrev f90-mode-abbrev-table "`sq" "sequence" nil)
646 (define-abbrev f90-mode-abbrev-table "`su" "subroutine" nil)
647 (define-abbrev f90-mode-abbrev-table "`ta" "target" nil)
648 (define-abbrev f90-mode-abbrev-table "`tr" ".true." nil)
649 (define-abbrev f90-mode-abbrev-table "`t" "type" nil)
650 (define-abbrev f90-mode-abbrev-table "`wh" "where" nil)
651 (define-abbrev f90-mode-abbrev-table "`wr" "write" nil)
652 (setq abbrevs-changed ac)))
653\f
654;;;###autoload
655(defun f90-mode ()
656 "Major mode for editing Fortran 90 code in free format.
657
658\\[f90-indent-new-line] corrects current indentation and creates new\
659 indented line.
660\\[f90-indent-line] indents the current line correctly.
661\\[f90-indent-subprogram] indents the current subprogram.
662
663Type `? or `\\[help-command] to display a list of built-in\
664 abbrevs for F90 keywords.
665
666Key definitions:
667\\{f90-mode-map}
668
669Variables controlling indentation style and extra features:
670
671 f90-do-indent
672 Extra indentation within do blocks. (default 3)
673 f90-if-indent
674 Extra indentation within if/select case/where/forall blocks. (default 3)
675 f90-type-indent
676 Extra indentation within type/interface/block-data blocks. (default 3)
677 f90-program-indent
678 Extra indentation within program/module/subroutine/function blocks.
679 (default 2)
680 f90-continuation-indent
681 Extra indentation applied to continuation lines. (default 5)
682 f90-comment-region
683 String inserted by \\[f90-comment-region] at start of each line in
684 region. (default \"!!!$\")
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685 f90-indented-comment-re
686 Regexp determining the type of comment to be intended like code.
687 (default \"!\")
688 f90-directive-comment-re
689 Regexp of comment-like directive like \"!HPF\\\\$\", not to be indented.
690 (default \"!hpf\\\\$\")
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691 f90-break-delimiters
692 Regexp holding list of delimiters at which lines may be broken.
693 (default \"[-+*/><=,% \\t]\")
694 f90-break-before-delimiters
695 Non-nil causes `f90-do-auto-fill' to break lines before delimiters.
696 (default t)
697 f90-beginning-ampersand
698 Automatic insertion of \& at beginning of continuation lines. (default t)
699 f90-smart-end
700 From an END statement, check and fill the end using matching block start.
701 Allowed values are 'blink, 'no-blink, and nil, which determine
702 whether to blink the matching beginning.) (default 'blink)
703 f90-auto-keyword-case
704 Automatic change of case of keywords. (default nil)
705 The possibilities are 'downcase-word, 'upcase-word, 'capitalize-word.
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706 f90-leave-line-no
707 Do not left-justify line numbers. (default nil)
708 f90-startup-message
709 Set to nil to inhibit message first time F90 mode is used. (default t)
710 f90-keywords
711 List of keywords used for highlighting/upcase-keywords etc.
712
713Turning on F90 mode calls the value of the variable `f90-mode-hook'
714with no args, if that value is non-nil."
715 (interactive)
716 (kill-all-local-variables)
717 (setq major-mode 'f90-mode)
718 (setq mode-name "F90")
719 (setq local-abbrev-table f90-mode-abbrev-table)
720 (set-syntax-table f90-mode-syntax-table)
721 (use-local-map f90-mode-map)
722 (make-local-variable 'indent-line-function)
723 (setq indent-line-function 'f90-indent-line)
724 (make-local-variable 'indent-region-function)
725 (setq indent-region-function 'f90-indent-region)
726 (make-local-variable 'require-final-newline)
727 (setq require-final-newline t)
728 (make-local-variable 'comment-start)
729 (setq comment-start "!")
730 (make-local-variable 'comment-start-skip)
731 (setq comment-start-skip "!+ *")
732 (make-local-variable 'comment-indent-function)
733 (setq comment-indent-function 'f90-comment-indent)
734 (make-local-variable 'abbrev-all-caps)
735 (setq abbrev-all-caps t)
72e80cad 736 (setq indent-tabs-mode nil)
034a9d40 737 ;; Setting up things for font-lock
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738 (if (string-match "Xemacs" emacs-version)
739 (progn
740 (put 'f90-mode 'font-lock-keywords-case-fold-search t)
741 (if (and current-menubar
742 (not (assoc "F90" current-menubar)))
743 (progn
744 (set-buffer-menubar (copy-sequence current-menubar))
745 (add-submenu nil f90-xemacs-menu)))
746 (make-local-variable 'font-lock-keywords)
747 (setq font-lock-keywords f90-font-lock-keywords))
748 ;; Emacs
749 (make-local-variable 'font-lock-defaults)
750 (setq font-lock-defaults
751 '((f90-font-lock-keywords f90-font-lock-keywords-1
752 f90-font-lock-keywords-2
753 f90-font-lock-keywords-3
754 f90-font-lock-keywords-4)
755 nil t))
756 ;; Tell imenu how to handle f90.
757 (make-local-variable 'imenu-generic-expression)
758 (setq imenu-generic-expression f90-imenu-generic-expression))
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759 (run-hooks 'f90-mode-hook)
760 (if f90-startup-message
c04f7d65 761 (message "Emacs F90 mode; please report bugs to %s" bug-f90-mode))
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762 (setq f90-startup-message nil))
763\f
764;; inline-functions
765(defsubst f90-get-beg-of-line ()
766 (save-excursion (beginning-of-line) (point)))
767
768(defsubst f90-get-end-of-line ()
769 (save-excursion (end-of-line) (point)))
770
771(defsubst f90-in-string ()
772 (let ((beg-pnt
773 (if (and f90-cache-position (> (point) f90-cache-position))
774 f90-cache-position
775 (point-min))))
776 (nth 3 (parse-partial-sexp beg-pnt (point)))))
777
778(defsubst f90-in-comment ()
779 (let ((beg-pnt
780 (if (and f90-cache-position (> (point) f90-cache-position))
781 f90-cache-position
782 (point-min))))
783 (nth 4 (parse-partial-sexp beg-pnt (point)))))
784
785(defsubst f90-line-continued ()
786 (save-excursion
787 (let ((bol (f90-get-beg-of-line)))
788 (end-of-line)
789 (while (f90-in-comment)
790 (search-backward "!" bol)
791 (skip-chars-backward "!"))
792 (skip-chars-backward " \t")
793 (= (preceding-char) ?&))))
794
795(defsubst f90-current-indentation ()
796 "Return indentation of current line.
797Line-numbers are considered whitespace characters."
798 (save-excursion
799 (beginning-of-line) (skip-chars-forward " \t0-9")
800 (current-column)))
801
802(defsubst f90-indent-to (col &optional no-line-number)
803 "Indent current line to column COL.
804If no-line-number nil, jump over a possible line-number."
805 (beginning-of-line)
806 (if (not no-line-number)
807 (skip-chars-forward " \t0-9"))
808 (delete-horizontal-space)
809 (if (zerop (current-column))
810 (indent-to col)
811 (indent-to col 1)))
812
813(defsubst f90-match-piece (arg)
814 (if (match-beginning arg)
815 (buffer-substring (match-beginning arg) (match-end arg))))
816
817(defsubst f90-get-present-comment-type ()
818 (save-excursion
819 (let ((type nil) (eol (f90-get-end-of-line)))
820 (if (f90-in-comment)
821 (progn
822 (beginning-of-line)
823 (re-search-forward "[!]+" eol)
824 (while (f90-in-string)
825 (re-search-forward "[!]+" eol))
826 (setq type (buffer-substring (match-beginning 0) (match-end 0)))))
827 type)))
828
829(defsubst f90-equal-symbols (a b)
830 "Compare strings neglecting case and allowing for nil value."
831 (let ((a-local (if a (downcase a) nil))
832 (b-local (if b (downcase b) nil)))
833 (equal a-local b-local)))
834
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835;; XEmacs 19.11 & 19.12 gives back a single char when matching an empty regular
836;; expression. Therefore, the next 2 functions are longer than necessary.
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837
838(defsubst f90-looking-at-do ()
839 "Return (\"do\" name) if a do statement starts after point.
840Name is nil if the statement has no label."
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841 (if (looking-at "\\(\\(\\sw+\\)[ \t]*\:\\)?[ \t]*\\(do\\)\\>")
842 (let (label
843 (struct (f90-match-piece 3)))
844 (if (looking-at "\\(\\sw+\\)[ \t]*\:")
845 (setq label (f90-match-piece 1)))
846 (list struct label))))
847
848(defsubst f90-looking-at-select-case ()
849 "Return (\"select\" name) if a select-case statement starts after point.
850Name is nil if the statement has no label."
851 (if (looking-at "\\(\\(\\sw+\\)[ \t]*\:\\)?[ \t]*\\(select\\)[ \t]*case[ \t]*(")
852 (let (label
853 (struct (f90-match-piece 3)))
854 (if (looking-at "\\(\\sw+\\)[ \t]*\:")
855 (setq label (f90-match-piece 1)))
856 (list struct label))))
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857
858(defsubst f90-looking-at-if-then ()
859 "Return (\"if\" name) if an if () then statement starts after point.
860Name is nil if the statement has no label."
861 (save-excursion
862 (let (struct (label nil))
ee30478d 863 (if (looking-at "\\(\\(\\sw+\\)[ \t]*\:\\)?[ \t]*\\(if\\)\\>")
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864 (progn
865 (setq struct (f90-match-piece 3))
ee30478d 866 (if (looking-at "\\(\\sw+\\)[ \t]*\:")
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867 (setq label (f90-match-piece 1)))
868 (goto-char (scan-lists (point) 1 0))
869 (skip-chars-forward " \t")
ee30478d 870 (if (or (looking-at "then\\>")
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871 (if (f90-line-continued)
872 (progn
873 (f90-next-statement)
874 (skip-chars-forward " \t0-9&")
ee30478d 875 (looking-at "then\\>"))))
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876 (list struct label)))))))
877
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878(defsubst f90-looking-at-where-or-forall ()
879 "Return (kind nil) if where/forall...end starts after point."
880 (save-excursion
881 (let (command)
882 (if (looking-at "\\(where\\|forall\\)[ \t]*(")
883 (progn
884 (setq command (list (f90-match-piece 1) nil))
885 (goto-char (scan-lists (point) 1 0))
886 (skip-chars-forward " \t")
887 (if (looking-at "\\(!\\|$\\)")
888 command))))))
889
890(defsubst f90-looking-at-type-like ()
891 "Return (kind name) at the start of a type/interface/block-data block.
892Name is non-nil only for type."
893 (cond
ee30478d 894 ((looking-at f90-type-def-re)
72e80cad 895 (list (f90-match-piece 1) (f90-match-piece 3)))
ee30478d 896 ((looking-at "\\(interface\\|block[\t]*data\\)\\>")
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897 (list (f90-match-piece 1) nil))))
898
899(defsubst f90-looking-at-program-block-start ()
900 "Return (kind name) if a program block with name name starts after point."
901 (cond
ee30478d 902 ((looking-at "\\(program\\)[ \t]+\\(\\sw+\\)\\>")
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903 (list (f90-match-piece 1) (f90-match-piece 2)))
904 ((and (not (looking-at "module[ \t]*procedure\\>"))
ee30478d 905 (looking-at "\\(module\\)[ \t]+\\(\\sw+\\)\\>"))
034a9d40 906 (list (f90-match-piece 1) (f90-match-piece 2)))
ee30478d 907 ((looking-at "\\(recursive[ \t]*\\)?\\(subroutine\\)[ \t]+\\(\\sw+\\)")
034a9d40 908 (list (f90-match-piece 2) (f90-match-piece 3)))
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909 ((and (not (looking-at "end[ \t]*function"))
910 (looking-at ".*\\(function\\)[ \t]+\\(\\sw+\\)"))
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911 (list (f90-match-piece 1) (f90-match-piece 2)))))
912
913(defsubst f90-looking-at-program-block-end ()
914 "Return list of type and name of end of block."
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915 (if (looking-at (concat "end[ \t]*" f90-blocks-re
916 "?\\([ \t]+\\(\\sw+\\)\\)?\\>"))
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917 (list (f90-match-piece 1) (f90-match-piece 3))))
918
919(defsubst f90-comment-indent ()
920 (cond ((looking-at "!!!") 0)
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921 ((and f90-directive-comment-re
922 (looking-at f90-directive-comment-re)) 0)
034a9d40 923 ((looking-at (regexp-quote f90-comment-region)) 0)
ee30478d 924 ((looking-at f90-indented-comment-re)
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925 (f90-calculate-indent))
926 (t (skip-chars-backward " \t")
927 (max (if (bolp) 0 (1+ (current-column))) comment-column))))
928
929(defsubst f90-present-statement-cont ()
930 "Return continuation properties of present statement."
931 (let (pcont cont)
932 (save-excursion
933 (setq pcont (if (f90-previous-statement) (f90-line-continued) nil)))
934 (setq cont (f90-line-continued))
935 (cond ((and (not pcont) (not cont)) 'single)
936 ((and (not pcont) cont) 'begin)
937 ((and pcont (not cont)) 'end)
938 ((and pcont cont) 'middle)
939 (t (error)))))
940
941(defsubst f90-indent-line-no ()
942 (if f90-leave-line-no
943 ()
944 (if (and (not (zerop (skip-chars-forward " \t")))
945 (looking-at "[0-9]"))
946 (delete-horizontal-space)))
947 (skip-chars-forward " \t0-9"))
948
949(defsubst f90-no-block-limit ()
950 (let ((eol (f90-get-end-of-line)))
951 (save-excursion
952 (not (or (looking-at "end")
953 (looking-at "\\(do\\|if\\|else\\|select[ \t]*case\\|\
954case\\|where\\|forall\\)\\>")
955 (looking-at "\\(program\\|module\\|interface\\|\
956block[ \t]*data\\)\\>")
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957 (looking-at "\\(contains\\|\\sw+[ \t]*:\\)")
958 (looking-at f90-type-def-re)
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959 (re-search-forward "\\(function\\|subroutine\\)" eol t))))))
960
961(defsubst f90-update-line ()
962 (let (bol eol)
ee30478d 963 (if f90-auto-keyword-case
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964 (progn (setq bol (f90-get-beg-of-line)
965 eol (f90-get-end-of-line))
966 (if f90-auto-keyword-case
ee30478d 967 (f90-change-keywords f90-auto-keyword-case bol eol))))))
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968\f
969(defun f90-get-correct-indent ()
970 "Get correct indent for a line starting with line number.
971Does not check type and subprogram indentation."
972 (let ((epnt (f90-get-end-of-line)) icol cont)
973 (save-excursion
974 (while (and (f90-previous-statement)
975 (or (progn
976 (setq cont (f90-present-statement-cont))
977 (or (eq cont 'end) (eq cont 'middle)))
978 (looking-at "[ \t]*[0-9]"))))
979 (setq icol (current-indentation))
980 (beginning-of-line)
981 (if (re-search-forward "\\(if\\|do\\|select\\|where\\|forall\\)"
982 (f90-get-end-of-line) t)
983 (progn
984 (beginning-of-line) (skip-chars-forward " \t")
985 (cond ((f90-looking-at-do)
986 (setq icol (+ icol f90-do-indent)))
987 ((or (f90-looking-at-if-then)
988 (f90-looking-at-where-or-forall)
989 (f90-looking-at-select-case))
990 (setq icol (+ icol f90-if-indent))))
991 (end-of-line)))
992 (while (re-search-forward
ee30478d 993 "\\(if\\|do\\|select\\|where\\|forall\\)" epnt t)
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994 (beginning-of-line) (skip-chars-forward " \t0-9")
995 (cond ((f90-looking-at-do)
996 (setq icol (+ icol f90-do-indent)))
997 ((or (f90-looking-at-if-then)
998 (f90-looking-at-where-or-forall)
999 (f90-looking-at-select-case))
1000 (setq icol (+ icol f90-if-indent)))
1001 ((looking-at f90-end-if-re)
1002 (setq icol (- icol f90-if-indent)))
ee30478d 1003 ((looking-at "end[ \t]*do\\>")
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1004 (setq icol (- icol f90-do-indent))))
1005 (end-of-line))
1006 icol)))
1007
1008
1009(defun f90-calculate-indent ()
1010 "Calculate the indent column based on previous statements."
1011 (interactive)
1012 (let (icol cont (case-fold-search t) (pnt (point)))
1013 (save-excursion
1014 (if (not (f90-previous-statement))
1015 (setq icol 0)
1016 (setq cont (f90-present-statement-cont))
1017 (if (eq cont 'end)
1018 (while (not (eq 'begin (f90-present-statement-cont)))
1019 (f90-previous-statement)))
1020 (cond ((eq cont 'begin)
1021 (setq icol (+ (f90-current-indentation)
1022 f90-continuation-indent)))
1023 ((eq cont 'middle) (setq icol(current-indentation)))
1024 (t (setq icol (f90-current-indentation))
1025 (skip-chars-forward " \t")
1026 (if (looking-at "[0-9]")
1027 (setq icol (f90-get-correct-indent))
1028 (cond ((or (f90-looking-at-if-then)
1029 (f90-looking-at-where-or-forall)
1030 (f90-looking-at-select-case)
1031 (looking-at f90-else-like-re))
1032 (setq icol (+ icol f90-if-indent)))
1033 ((f90-looking-at-do)
1034 (setq icol (+ icol f90-do-indent)))
1035 ((f90-looking-at-type-like)
1036 (setq icol (+ icol f90-type-indent)))
1037 ((or (f90-looking-at-program-block-start)
1038 (looking-at "contains[ \t]*\\($\\|!\\)"))
1039 (setq icol (+ icol f90-program-indent)))))
1040 (goto-char pnt)
1041 (beginning-of-line)
1042 (cond ((looking-at "[ \t]*$"))
1043 ((looking-at "[ \t]*#") ; Check for cpp directive.
1044 (setq icol 0))
1045 (t
1046 (skip-chars-forward " \t0-9")
1047 (cond ((or (looking-at f90-else-like-re)
1048 (looking-at f90-end-if-re))
1049 (setq icol (- icol f90-if-indent)))
ee30478d 1050 ((looking-at "end[ \t]*do\\>")
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1051 (setq icol (- icol f90-do-indent)))
1052 ((looking-at f90-end-type-re)
1053 (setq icol (- icol f90-type-indent)))
1054 ((or (looking-at "contains[ \t]*\\(!\\|$\\)")
1055 (f90-looking-at-program-block-end))
1056 (setq icol (- icol f90-program-indent))))))
1057 ))))
1058 icol))
1059\f
1060;; Statement = statement line, a line which is neither blank, nor a comment.
1061(defun f90-previous-statement ()
1062 "Move point to beginning of the previous F90 statement.
1063Return nil if no previous statement is found."
1064 (interactive)
1065 (let (not-first-statement)
1066 (beginning-of-line)
1067 (while (and (setq not-first-statement (zerop (forward-line -1)))
ee30478d 1068 (looking-at "[ \t0-9]*\\(!\\|$\\|#\\)")))
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1069 not-first-statement))
1070
1071(defun f90-next-statement ()
1072 "Move point to beginning of the next F90 statement.
1073Return nil if no later statement is found."
1074 (interactive)
1075 (let (not-last-statement)
1076 (beginning-of-line)
1077 (while (and (setq not-last-statement
1078 (and (zerop (forward-line 1))
1079 (not (eobp))))
1080 (looking-at "[ \t0-9]*\\(!\\|$\\)")))
1081 not-last-statement))
1082
1083(defun f90-beginning-of-subprogram ()
1084 "Move point to the beginning of subprogram.
1085Return (type name) or nil if not found."
1086 (interactive)
1087 (let ((count 1) (case-fold-search t) matching-beg)
1088 (beginning-of-line) (skip-chars-forward " \t0-9")
1089 (if (setq matching-beg (f90-looking-at-program-block-start))
1090 (setq count (- count 1)))
1091 (while (and (not (zerop count))
1092 (re-search-backward f90-program-block-re nil 'move))
1093 (beginning-of-line) (skip-chars-forward " \t0-9")
1094 (cond
1095 ((setq matching-beg (f90-looking-at-program-block-start))
1096 (setq count (- count 1)))
1097 ((f90-looking-at-program-block-end)
1098 (setq count (+ count 1)))))
1099 (beginning-of-line)
1100 (if (zerop count)
1101 matching-beg
1102 (message "No beginning-found.")
1103 nil)))
1104
1105(defun f90-end-of-subprogram ()
1106 "Move point to the end of subprogram.
1107Return (type name) or nil if not found."
1108 (interactive)
1109 (let ((count 1) (case-fold-search t) matching-end)
1110 (beginning-of-line) (skip-chars-forward " \t0-9")
1111 (if (setq matching-end (f90-looking-at-program-block-end))
1112 (setq count (1- count)))
1113 (end-of-line)
1114 (while (and (not (zerop count))
1115 (re-search-forward f90-program-block-re nil 'move))
1116 (beginning-of-line) (skip-chars-forward " \t0-9")
1117 (cond ((f90-looking-at-program-block-start)
1118 (setq count (+ count 1)))
1119 ((setq matching-end (f90-looking-at-program-block-end))
1120 (setq count (1- count ))))
1121 (end-of-line))
1122 (forward-line 1)
1123 (if (zerop count)
1124 matching-end
1125 (message "No end found.")
1126 nil)))
1127
1128(defun f90-mark-subprogram ()
1129 "Put mark at end of F90 subprogram, point at beginning.
1130Marks are pushed and highlight (grey shadow) is turned on."
1131 (interactive)
1132 (let ((pos (point)) program)
1133 (f90-end-of-subprogram)
1134 (push-mark (point) t)
1135 (goto-char pos)
1136 (setq program (f90-beginning-of-subprogram))
1137 ;; The keywords in the preceding lists assume case-insensitivity.
ee30478d 1138 (if (string-match "XEmacs" emacs-version)
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1139 (zmacs-activate-region)
1140 (setq mark-active t)
1141 (setq deactivate-mark nil))
1142 program))
1143
1144(defun f90-comment-region (beg-region end-region)
1145 "Comment/uncomment every line in the region.
1146Insert f90-comment-region at the beginning of every line in the region
1147or, if already present, remove it."
1148 (interactive "*r")
1149 (let ((end (make-marker)))
1150 (set-marker end end-region)
1151 (goto-char beg-region)
1152 (beginning-of-line)
1153 (if (looking-at (regexp-quote f90-comment-region))
1154 (delete-region (point) (match-end 0))
1155 (insert f90-comment-region))
1156 (while (and (zerop (forward-line 1))
1157 (< (point) (marker-position end)))
1158 (if (looking-at (regexp-quote f90-comment-region))
1159 (delete-region (point) (match-end 0))
1160 (insert f90-comment-region)))
1161 (set-marker end nil)))
1162
1163(defun f90-indent-line (&optional no-update)
1164 "Indent current line as F90 code."
1165 (interactive)
1166 (let (indent (no-line-number nil) (pos (make-marker)) (case-fold-search t))
1167 (set-marker pos (point))
1168 (beginning-of-line) ; Digits after & \n are not line-no
1169 (if (save-excursion (and (f90-previous-statement) (f90-line-continued)))
1170 (progn (setq no-line-number t) (skip-chars-forward " \t"))
1171 (f90-indent-line-no))
1172 (if (looking-at "!")
1173 (setq indent (f90-comment-indent))
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1174 (if (and (looking-at "end") f90-smart-end)
1175 (f90-match-end))
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1176 (setq indent (f90-calculate-indent)))
1177 (if (zerop (- indent (current-column)))
1178 nil
1179 (f90-indent-to indent no-line-number))
1180 ;; If initial point was within line's indentation,
1181 ;; position after the indentation. Else stay at same point in text.
1182 (if (< (point) (marker-position pos))
1183 (goto-char (marker-position pos)))
1184 (if (not no-update) (f90-update-line))
1185 (if (and auto-fill-function
1186 (> (save-excursion (end-of-line) (current-column)) fill-column))
1187 (save-excursion (f90-do-auto-fill)))
1188 (set-marker pos nil)))
1189
1190(defun f90-indent-new-line ()
1191 "Reindent the current F90 line, insert a newline and indent the newline.
1192An abbrev before point is expanded if `abbrev-mode' is non-nil.
1193If run in the middle of a line, the line is not broken."
1194 (interactive)
1195 (let (string cont (case-fold-search t))
1196 (if abbrev-mode (expand-abbrev))
1197 (beginning-of-line) ; Reindent where likely to be needed.
1198 (f90-indent-line-no)
1199 (if (or (looking-at "\\(end\\|else\\|!\\)"))
1200 (f90-indent-line 'no-update))
1201 (end-of-line)
1202 (delete-horizontal-space) ;Destroy trailing whitespace
1203 (setq string (f90-in-string))
1204 (setq cont (f90-line-continued))
1205 (if (and string (not cont)) (insert "&"))
1206 (f90-update-line)
1207 (newline)
1208 (if (or string (and cont f90-beginning-ampersand)) (insert "&"))
1209 (f90-indent-line 'no-update)))
1210
1211
1212(defun f90-indent-region (beg-region end-region)
1213 "Indent every line in region by forward parsing."
1214 (interactive "*r")
1215 (let ((end-region-mark (make-marker)) (save-point (point-marker))
1216 (block-list nil) ind-lev ind-curr ind-b cont
1217 struct beg-struct end-struct)
1218 (set-marker end-region-mark end-region)
1219 (goto-char beg-region)
1220 ;; first find a line which is not a continuation line or comment
1221 (beginning-of-line)
ee30478d 1222 (while (and (looking-at "[ \t]*[0-9]*\\(!\\|#\\|[ \t]*$\\)")
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1223 (progn (f90-indent-line 'no-update)
1224 (zerop (forward-line 1)))
1225 (< (point) end-region-mark)))
1226 (setq cont (f90-present-statement-cont))
1227 (while (and (or (eq cont 'middle) (eq cont 'end))
1228 (f90-previous-statement))
1229 (setq cont (f90-present-statement-cont)))
1230 ;; process present line for beginning of block
1231 (setq f90-cache-position (point))
1232 (f90-indent-line 'no-update)
1233 (setq ind-lev (f90-current-indentation))
1234 (setq ind-curr ind-lev)
1235 (beginning-of-line) (skip-chars-forward " \t0-9")
1236 (setq struct nil)
1237 (setq ind-b (cond ((setq struct (f90-looking-at-do)) f90-do-indent)
1238 ((or (setq struct (f90-looking-at-if-then))
1239 (setq struct (f90-looking-at-select-case))
1240 (setq struct (f90-looking-at-where-or-forall))
1241 (looking-at f90-else-like-re))
1242 f90-if-indent)
1243 ((setq struct (f90-looking-at-type-like))
1244 f90-type-indent)
1245 ((or(setq struct (f90-looking-at-program-block-start))
1246 (looking-at "contains[ \t]*\\($\\|!\\)"))
1247 f90-program-indent)))
1248 (if ind-b (setq ind-lev (+ ind-lev ind-b)))
1249 (if struct (setq block-list (cons struct block-list)))
1250 (while (and (f90-line-continued) (zerop (forward-line 1))
1251 (< (point) end-region-mark))
1252 (if (not (zerop (- (current-indentation)
1253 (+ ind-curr f90-continuation-indent))))
1254 (f90-indent-to (+ ind-curr f90-continuation-indent) 'no-line-no)))
1255 ;; process all following lines
1256 (while (and (zerop (forward-line 1)) (< (point) end-region-mark))
1257 (beginning-of-line)
1258 (f90-indent-line-no)
1259 (setq f90-cache-position (point))
1260 (cond ((looking-at "[ \t]*$") (setq ind-curr 0))
1261 ((looking-at "[ \t]*#") (setq ind-curr 0))
1262 ((looking-at "!") (setq ind-curr (f90-comment-indent)))
1263 ((f90-no-block-limit) (setq ind-curr ind-lev))
1264 ((looking-at f90-else-like-re) (setq ind-curr
1265 (- ind-lev f90-if-indent)))
1266 ((looking-at "contains[ \t]*\\($\\|!\\)")
1267 (setq ind-curr (- ind-lev f90-program-indent)))
1268 ((setq ind-b
1269 (cond ((setq struct (f90-looking-at-do)) f90-do-indent)
1270 ((or (setq struct (f90-looking-at-if-then))
1271 (setq struct (f90-looking-at-select-case))
1272 (setq struct (f90-looking-at-where-or-forall)))
1273 f90-if-indent)
1274 ((setq struct (f90-looking-at-type-like))
1275 f90-type-indent)
1276 ((setq struct (f90-looking-at-program-block-start))
1277 f90-program-indent)))
1278 (setq ind-curr ind-lev)
1279 (if ind-b (setq ind-lev (+ ind-lev ind-b)))
1280 (setq block-list (cons struct block-list)))
1281 ((setq end-struct (f90-looking-at-program-block-end))
1282 (setq beg-struct (car block-list)
1283 block-list (cdr block-list))
1284 (if f90-smart-end
1285 (save-excursion
1286 (f90-block-match (car beg-struct)(car (cdr beg-struct))
1287 (car end-struct)(car (cdr end-struct)))))
1288 (setq ind-b
1289 (cond ((looking-at f90-end-if-re) f90-if-indent)
1290 ((looking-at "end[ \t]*do\\>") f90-do-indent)
1291 ((looking-at f90-end-type-re) f90-type-indent)
1292 ((f90-looking-at-program-block-end)
1293 f90-program-indent)))
1294 (if ind-b (setq ind-lev (- ind-lev ind-b)))
1295 (setq ind-curr ind-lev))
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1296 (t (setq ind-curr ind-lev)))
1297 ;; do the indentation if necessary
1298 (if (not (zerop (- ind-curr (current-column))))
1299 (f90-indent-to ind-curr))
1300 (while (and (f90-line-continued) (zerop (forward-line 1))
1301 (< (point) end-region-mark))
1302 (if (not (zerop (- (current-indentation)
1303 (+ ind-curr f90-continuation-indent))))
1304 (f90-indent-to (+ ind-curr f90-continuation-indent) 'no-line-no))))
1305 ;; restore point etc
1306 (setq f90-cache-position nil)
1307 (goto-char save-point)
1308 (set-marker end-region-mark nil)
1309 (set-marker save-point nil)
ee30478d 1310 (if (string-match "Xemacs" emacs-version)
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1311 (zmacs-deactivate-region)
1312 (deactivate-mark))))
1313
1314(defun f90-indent-subprogram ()
1315 "Properly indent the subprogram which contains point."
1316 (interactive)
1317 (save-excursion
1318 (let (program)
1319 (setq program (f90-mark-subprogram))
1320 (if program
1321 (progn
1322 (message (concat "Indenting " (car program) " "
1323 (car (cdr program))"."))
1324 (f90-indent-region (point) (mark))
1325 (message (concat "Indenting " (car program) " "
1326 (car (cdr program)) "...done.")))
1327 (message "Indenting the whole file.")
1328 (f90-indent-region (point) (mark))
1329 (message (concat "Indenting the whole file...done."))))))
1330
1331;; autofill and break-line
1332(defun f90-break-line (&optional no-update)
1333 "Break line at point, insert continuation marker(s) and indent."
1334 (interactive)
1335 (let (ctype)
1336 (cond ((f90-in-string)
1337 (insert "&") (newline) (insert "&"))
1338 ((f90-in-comment)
1339 (delete-horizontal-space)
1340 (setq ctype (f90-get-present-comment-type))
1341 (newline) (insert (concat ctype " ")))
1342 (t (delete-horizontal-space)
1343 (insert "&")
1344 (if (not no-update) (f90-update-line))
1345 (newline)
1346 (if f90-beginning-ampersand (insert "& ")))))
1347 (if (not no-update) (f90-indent-line)))
1348
1349(defun f90-find-breakpoint ()
1350 "From fill-column, search backward for break-delimiter."
1351 (let ((bol (f90-get-beg-of-line)))
1352 (re-search-backward f90-break-delimiters bol)
1353 (if f90-break-before-delimiters
1354 (progn (backward-char)
1355 (if (not (looking-at f90-no-break-re))
1356 (forward-char)))
1357 (if (looking-at f90-no-break-re)
1358 (forward-char 2)
1359 (forward-char)))))
1360
1361(defun f90-auto-fill-mode (arg)
1362 "Toggle f90-auto-fill mode.
1363With ARG, turn `f90-auto-fill' mode on iff ARG is positive.
1364In `f90-auto-fill' mode, inserting a space at a column beyond `fill-column'
1365automatically breaks the line at a previous space."
1366 (interactive "P")
1367 (prog1 (setq auto-fill-function
1368 (if (if (null arg)
1369 (not auto-fill-function)
1370 (> (prefix-numeric-value arg) 0))
1371 'f90-do-auto-fill))
3d93ac28 1372 (force-mode-line-update)))
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1373
1374(defun f90-do-auto-fill ()
1375 "Break line if non-white characters beyond fill-column."
1376 (interactive)
1377 ;; Break the line before or after the last delimiter (non-word char).
1378 ;; Will not break **, //, or => (specified by f90-no-break-re).
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1379 ;; Start by checking that line is longer than fill-column.
1380 (if (> (save-excursion (end-of-line) (current-column)) fill-column)
1381 (progn
1382 (move-to-column fill-column)
1383 (if (and (looking-at "[ \t]*$") (not (f90-in-string)))
1384 (delete-horizontal-space)
1385 (f90-find-breakpoint)
1386 (f90-break-line)
1387 (end-of-line)))))
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1388
1389(defun f90-join-lines ()
1390 "Join present line with next line, if this line ends with \&."
1391 (interactive)
1392 (let (pos (oldpos (point)))
1393 (end-of-line)
1394 (skip-chars-backward " \t")
1395 (cond ((= (preceding-char) ?&)
1396 (delete-char -1)
1397 (setq pos (point))
1398 (forward-line 1)
1399 (skip-chars-forward " \t")
1400 (if (looking-at "\&") (delete-char 1))
1401 (delete-region pos (point))
1402 (if (not (f90-in-string))
1403 (progn (delete-horizontal-space) (insert " ")))
1404 (if (and auto-fill-function
1405 (> (save-excursion (end-of-line)
1406 (current-column))
1407 fill-column))
1408 (f90-do-auto-fill))
1409 (goto-char oldpos)
1410 t))))
1411
1412(defun f90-fill-region (beg-region end-region)
1413 "Fill every line in region by forward parsing. Join lines if possible."
1414 (interactive "*r")
1415 (let ((end-region-mark (make-marker))
ee30478d 1416 (f90-smart-end nil) (f90-auto-keyword-case nil) indent (go-on t)
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1417 (af-function auto-fill-function) (auto-fill-function nil))
1418 (set-marker end-region-mark end-region)
1419 (goto-char beg-region)
1420 (while go-on
1421 ;; join as much as possible
1422 (while (f90-join-lines));
1423 (setq indent (+ (f90-current-indentation) f90-continuation-indent))
1424 ;; chop the line if necessary
1425 (while (> (save-excursion (end-of-line) (current-column))
1426 fill-column)
1427 (move-to-column fill-column)
1428 (if (and (looking-at "[ \t]*$") (not (f90-in-string)))
1429 (delete-horizontal-space)
1430 (f90-find-breakpoint)
1431 (f90-break-line 'no-update)
1432 (f90-indent-to indent 'no-line-no)))
1433 (setq go-on (and (< (point) (marker-position end-region-mark))
1434 (zerop (forward-line 1))))
1435 (setq f90-cache-position (point)))
1436 (setq auto-fill-function af-function)
1437 (setq f90-cache-position nil)
ee30478d 1438 (if (string-match "XEmacs" emacs-version)
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1439 (zmacs-deactivate-region)
1440 (deactivate-mark))))
1441\f
1442(defun f90-block-match (beg-block beg-name end-block end-name)
1443 "Match end-struct with beg-struct and complete end-block if possible.
1444Leave point at the end of line."
1445 (search-forward "end" (f90-get-end-of-line))
1446 (catch 'no-match
1447 (if (not (f90-equal-symbols beg-block end-block))
1448 (if end-block
1449 (progn
1450 (message "END %s does not match %s." end-block beg-block)
1451 (end-of-line)
1452 (throw 'no-match nil))
1453 (message "Inserting %s." beg-block)
1454 (insert (concat " " beg-block)))
1455 (search-forward end-block))
1456 (if (not (f90-equal-symbols beg-name end-name))
1457 (cond ((and beg-name (not end-name))
1458 (message "Inserting %s." beg-name)
1459 (insert (concat " " beg-name)))
1460 ((and beg-name end-name)
1461 (message "Replacing %s with %s." end-name beg-name)
1462 (search-forward end-name)
1463 (replace-match beg-name))
1464 ((and (not beg-name) end-name)
1465 (message "Deleting %s." end-name)
1466 (search-forward end-name)
1467 (replace-match "")))
1468 (if end-name (search-forward end-name)))
ee30478d 1469 (if (not (looking-at "[ \t]*!")) (delete-horizontal-space))))
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1470
1471(defun f90-match-end ()
1472 "From an end foo statement, find the corresponding foo including name."
1473 (interactive)
1474 (let ((count 1) (top-of-window (window-start)) (matching-beg nil)
1475 (end-point (point)) (case-fold-search t)
1476 beg-name end-name beg-block end-block end-struct)
1477 (if (save-excursion (beginning-of-line) (skip-chars-forward " \t0-9")
1478 (setq end-struct (f90-looking-at-program-block-end)))
1479 (progn
1480 (setq end-block (car end-struct))
1481 (setq end-name (car (cdr end-struct)))
1482 (save-excursion
1483 (beginning-of-line)
1484 (while (and (not (zerop count))
1485 (re-search-backward
ee30478d 1486 (concat "\\(" f90-blocks-re "\\)") nil t))
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1487 (beginning-of-line) (skip-chars-forward " \t0-9")
1488 (cond ((setq matching-beg
1489 (cond
1490 ((f90-looking-at-do))
1491 ((f90-looking-at-if-then))
1492 ((f90-looking-at-where-or-forall))
1493 ((f90-looking-at-select-case))
1494 ((f90-looking-at-type-like))
1495 ((f90-looking-at-program-block-start))))
1496 (setq count (- count 1)))
1497 ((looking-at (concat "end[ \t]*" f90-blocks-re "\\b"))
ee30478d 1498 (setq count (+ count 1)))))
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1499 (if (not (zerop count))
1500 (message "No matching beginning.")
1501 (f90-update-line)
1502 (if (eq f90-smart-end 'blink)
1503 (if (< (point) top-of-window)
1504 (message (concat
1505 "Matches " (what-line) ": "
1506 (buffer-substring
1507 (progn (beginning-of-line) (point))
1508 (progn (end-of-line) (point)))))
1509 (sit-for 1)))
1510 (setq beg-block (car matching-beg))
1511 (setq beg-name (car (cdr matching-beg)))
1512 (goto-char end-point)
1513 (beginning-of-line)
1514 (f90-block-match beg-block beg-name end-block end-name)))))))
1515
1516(defun f90-insert-end ()
1517 "Inserts an complete end statement matching beginning of present block."
1518 (interactive)
1519 (let ((f90-smart-end (if f90-smart-end f90-smart-end 'blink)))
1520 (insert "end")
1521 (f90-indent-new-line)))
1522\f
1523;; abbrevs and keywords
1524
1525(defun f90-abbrev-start ()
1526 "Typing `\\[help-command] or `? lists all the F90 abbrevs.
1527Any other key combination is executed normally."
1528 (interactive)
ee30478d 1529 (let (e c)
034a9d40 1530 (insert last-command-char)
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1531 (setq e (next-command-event)
1532 c (if (string-match "XEmacs" emacs-version)
1533 (event-to-character e)
1534 (read-event)))
1535 ;; insert char if not equal to `?'
1536 (if (or (= c ??) (eq c help-char))
034a9d40 1537 (f90-abbrev-help)
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1538 (if (string-match "XEmacs" emacs-version)
1539 (setq unread-command-event e)
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1540 (setq unread-command-events (list c))))))
1541
1542(defun f90-abbrev-help ()
1543 "List the currently defined abbrevs in F90 mode."
1544 (interactive)
1545 (message "Listing abbrev table...")
1546 (display-buffer (f90-prepare-abbrev-list-buffer))
1547 (message "Listing abbrev table...done"))
1548
1549(defun f90-prepare-abbrev-list-buffer ()
1550 (save-excursion
1551 (set-buffer (get-buffer-create "*Abbrevs*"))
1552 (erase-buffer)
1553 (insert-abbrev-table-description 'f90-mode-abbrev-table t)
1554 (goto-char (point-min))
1555 (set-buffer-modified-p nil)
1556 (edit-abbrevs-mode))
1557 (get-buffer-create "*Abbrevs*"))
1558
1559(defun f90-upcase-keywords ()
1560 "Upcase all F90 keywords in the buffer."
1561 (interactive)
1562 (f90-change-keywords 'upcase-word))
1563
1564(defun f90-capitalize-keywords ()
1565 "Capitalize all F90 keywords in the buffer."
1566 (interactive)
1567 (f90-change-keywords 'capitalize-word))
1568
1569(defun f90-downcase-keywords ()
1570 "Downcase all F90 keywords in the buffer."
1571 (interactive)
1572 (f90-change-keywords 'downcase-word))
1573
1574(defun f90-upcase-region-keywords (beg end)
1575 "Upcase all F90 keywords in the region."
1576 (interactive "*r")
1577 (f90-change-keywords 'upcase-word beg end))
1578
1579(defun f90-capitalize-region-keywords (beg end)
1580 "Capitalize all F90 keywords in the region."
1581 (interactive "*r")
1582 (f90-change-keywords 'capitalize-word beg end))
1583
1584(defun f90-downcase-region-keywords (beg end)
1585 "Downcase all F90 keywords in the region."
1586 (interactive "*r")
1587 (f90-change-keywords 'downcase-word beg end))
1588
1589;; Change the keywords according to argument.
1590(defun f90-change-keywords (change-word &optional beg end)
1591 (save-excursion
1592 (setq beg (if beg beg (point-min)))
1593 (setq end (if end end (point-max)))
1594 (let ((keyword-re
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1595 (concat "\\("
1596 f90-keywords-re "\\|" f90-procedures-re "\\|"
1597 f90-hpf-keywords-re "\\|" f90-operators-re "\\)"))
1598 (ref-point (point-min)) state
1599 (modified (buffer-modified-p)) saveword back-point)
034a9d40 1600 (goto-char beg)
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1601 (unwind-protect
1602 (while (re-search-forward keyword-re end t)
1603 (if (progn
1604 (setq state (parse-partial-sexp ref-point (point)))
1605 (or (nth 3 state) (nth 4 state)
1606 (save-excursion ; Check for cpp directive.
1607 (beginning-of-line)
1608 (skip-chars-forward " \t0-9")
1609 (looking-at "#"))))
1610 ()
1611 (setq ref-point (point)
1612 back-point (save-excursion (backward-word 1) (point)))
1613 (setq saveword (buffer-substring back-point ref-point))
1614 (funcall change-word -1)
1615 (or (string= saveword (buffer-substring back-point ref-point))
1616 (setq modified t))))
1617 (or modified (set-buffer-modified-p nil))))))
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1618
1619(provide 'f90)
db97b872 1620
034a9d40 1621;;; f90.el ends here