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[bpt/emacs.git] / lisp / progmodes / f90.el
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be010748 1;;; f90.el --- Fortran-90 mode (free format)
b578f267 2
fcad5199 3;; Copyright (C) 1995, 1996, 1997 Free Software Foundation, Inc.
034a9d40 4
ee30478d 5;; Author: Torbj\"orn Einarsson <T.Einarsson@clab.ericsson.se>
24c86814 6;; Last Change: May 29 1997
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7;; Keywords: fortran, f90, languages
8
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9;; This file is part of GNU Emacs.
10
11;; GNU Emacs is free software; you can redistribute it and/or modify
034a9d40 12;; it under the terms of the GNU General Public License as published by
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13;; the Free Software Foundation; either version 2, or (at your option)
14;; any later version.
034a9d40 15
b578f267 16;; GNU Emacs is distributed in the hope that it will be useful,
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17;; but WITHOUT ANY WARRANTY; without even the implied warranty of
18;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19;; GNU General Public License for more details.
20
21;; You should have received a copy of the GNU General Public License
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22;; along with GNU Emacs; see the file COPYING. If not, write to the
23;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
24;; Boston, MA 02111-1307, USA.
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25
26;;; Commentary:
b578f267 27
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28;; Smart mode for editing F90 programs in FREE FORMAT.
29;; Knows about continuation lines, named structured statements, and other
30;; new features in F90 including HPF (High Performance Fortran) structures.
31;; The basic feature is to provide an accurate indentation of F90 programs.
32;; In addition, there are many more features like automatic matching of all
33;; end statements, an auto-fill function to break long lines, a join-lines
34;; function which joins continued lines etc etc.
35;; To facilitate typing, a fairly complete list of abbreviations is provided.
36;; For example, `i is short-hand for integer (if abbrev-mode is on).
37
38;; There are two separate features for highlighting the code.
39;; 1) Upcasing or capitalizing of all keywords.
ee30478d 40;; 2) Colors/fonts using font-lock-mode. (only when using X-windows)
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41;; Automatic upcase of downcase of keywords is controlled by the parameter
42;; f90-auto-keyword-case.
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43
44;; The indentations of lines starting with ! is determined by the first of the
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45;; following matches (the values in the left column are the default values):
46
47;; start-string/regexp indent variable holding start-string/regexp
48;; !!! 0
49;; !hpf\\$ (re) 0 f90-directive-comment-re
50;; !!$ 0 f90-comment-region
51;; ! (re) as code f90-indented-comment-re
52;; default comment-column
53
54;; Ex: Here is the result of 3 different settings of f90-indented-comment-re
55;; f90-indented-comment-re !-indentation !!-indentation
56;; ! as code as code
57;; !! comment-column as code
58;; ![^!] as code comment-column
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59;; Trailing comments are indented to comment-column with indent-for-comment M-;
60;; f90-comment-region (C-c;) toggles insertion of f90-comment-region in region.
61
62;; One common convention for free vs. fixed format is that free-format files
63;; have the ending .f90 while the fixed format files have the ending .f.
64;; To make f90-mode work, put this file in, for example, your directory
65;; ~/lisp, and be sure that you have the following in your .emacs-file
66;; (setq load-path (append load-path '("~/lisp")))
67;; (autoload 'f90-mode "f90"
68;; "Major mode for editing Fortran 90 code in free format." t)
69;; (setq auto-mode-alist (append auto-mode-alist
70;; (list '("\\.f90$" . f90-mode))))
71;; Once you have entered f90-mode, you may get more info by using
72;; the command describe-mode (C-h m). For online help describing various
73;; functions use C-h f <Name of function you want described>
74
75;; To customize the f90-mode for your taste, use, for example:
76;; (you don't have to specify values for all the parameters below)
77;;(setq f90-mode-hook
78;; '(lambda () (setq f90-do-indent 3
79;; f90-if-indent 3
80;; f90-type-indent 3
81;; f90-program-indent 2
82;; f90-continuation-indent 5
83;; f90-comment-region "!!$"
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84;; f90-directive-comment-re "!hpf\\$"
85;; f90-indented-comment-re "!"
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86;; f90-break-delimiters "[-+\\*/,><=% \t]"
87;; f90-break-before-delimiters t
88;; f90-beginning-ampersand t
89;; f90-smart-end 'blink
90;; f90-auto-keyword-case nil
034a9d40 91;; f90-leave-line-no nil
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92;; f90-startup-message t
93;; indent-tabs-mode nil
b974df0a 94;; f90-font-lock-keywords f90-font-lock-keywords-2
72e80cad 95;; )
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96;; ;;The rest is not default.
97;; (abbrev-mode 1) ; turn on abbreviation mode
ee30478d 98;; (turn-on-font-lock) ; for highlighting
b974df0a 99;; (f90-add-imenu-menu) ; extra menu with functions etc.
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100;; (if f90-auto-keyword-case ; change case of all keywords on startup
101;; (f90-change-keywords f90-auto-keyword-case))
102;; ))
103;; in your .emacs file (the shown values are the defaults). You can also
104;; change the values of the lists f90-keywords etc.
105;; The auto-fill and abbreviation minor modes are accessible from the menu,
b974df0a 106;; or by using M-x auto-fill-mode and M-x abbrev-mode, respectively.
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107
108;; Remarks
109;; 1) Line numbers are by default left-justified. If f90-leave-line-no is
110;; non-nil, the line numbers are never touched.
111;; 2) Multi-; statements like > do i=1,20 ; j=j+i ; end do < are not handled
112;; correctly, but I imagine them to be rare.
ee30478d 113;; 3) Regexps for hilit19 are no longer supported.
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114;; 4) For FIXED FORMAT code, use the ordinary fortran mode.
115;; 5) This mode does not work under emacs-18.x.
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116;; 6) Preprocessor directives, i.e., lines starting with # are left-justified
117;; and are untouched by all case-changing commands. There is, at present, no
118;; mechanism for treating multi-line directives (continued by \ ).
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119;; 7) f77 do-loops do 10 i=.. ; ; 10 continue are not correctly indented.
120;; You are urged to use f90-do loops (with labels if you wish).
c80718cc 121;; 8) The highlighting mode under XEmacs is not as complete as under Emacs.
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122
123;; List of user commands
124;; f90-previous-statement f90-next-statement
125;; f90-beginning-of-subprogram f90-end-of-subprogram f90-mark-subprogram
126;; f90-comment-region
127;; f90-indent-line f90-indent-new-line
128;; f90-indent-region (can be called by calling indent-region)
129;; f90-indent-subprogram
130;; f90-break-line f90-join-lines
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131;; f90-fill-region
132;; f90-insert-end
133;; f90-upcase-keywords f90-upcase-region-keywords
134;; f90-downcase-keywords f90-downcase-region-keywords
135;; f90-capitalize-keywords f90-capitalize-region-keywords
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136;; f90-add-imenu-menu
137;; f90-font-lock-1, f90-font-lock-2, f90-font-lock-3, f90-font-lock-4
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138
139;; Thanks to all the people who have tested the mode. Special thanks to Jens
140;; Bloch Helmers for encouraging me to write this code, for creative
141;; suggestions as well as for the lists of hpf-commands.
142;; Also thanks to the authors of the fortran and pascal modes, on which some
143;; of this code is built.
144
145;;; Code:
b578f267 146
ee30478d 147(defconst bug-f90-mode "T.Einarsson@clab.ericsson.se"
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148 "Address of mailing list for F90 mode bugs.")
149
150;; User options
034a9d40 151
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152(defgroup f90 nil
153 "Fortran-90 mode"
154 :group 'fortran)
034a9d40 155
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156(defgroup f90-indent nil
157 "Fortran-90 indentation"
158 :prefix "f90-"
159 :group 'f90)
034a9d40 160
034a9d40 161
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162(defcustom f90-do-indent 3
163 "*Extra indentation applied to DO blocks."
164 :type 'integer
165 :group 'f90-indent)
034a9d40 166
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167(defcustom f90-if-indent 3
168 "*Extra indentation applied to IF, SELECT CASE, WHERE and FORALL blocks."
169 :type 'integer
170 :group 'f90-indent)
034a9d40 171
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172(defcustom f90-type-indent 3
173 "*Extra indentation applied to TYPE, INTERFACE and BLOCK DATA blocks."
174 :type 'integer
175 :group 'f90-indent)
034a9d40 176
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177(defcustom f90-program-indent 2
178 "*Extra indentation applied to PROGRAM/MODULE/SUBROUTINE/FUNCTION blocks."
179 :type 'integer
180 :group 'f90-indent)
034a9d40 181
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182(defcustom f90-continuation-indent 5
183 "*Extra indentation applied to F90 continuation lines."
184 :type 'integer
185 :group 'f90-indent)
034a9d40 186
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187(defcustom f90-comment-region "!!$"
188 "*String inserted by \\[f90-comment-region]\
189 at start of each line in region."
190 :type 'string
191 :group 'f90-indent)
192
193(defcustom f90-indented-comment-re "!"
194 "*Regexp saying which comments to be indented like code."
195 :type 'regexp
196 :group 'f90-indent)
197
198(defcustom f90-directive-comment-re "!hpf\\$"
199 "*Regexp of comment-like directive like \"!HPF\\\\$\", not to be indented."
200 :type 'regexp
201 :group 'f90-indent)
202
203(defcustom f90-beginning-ampersand t
204 "*t makes automatic insertion of \& at beginning of continuation line."
205 :type 'boolean
206 :group 'f90)
207
208(defcustom f90-smart-end 'blink
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209 "*From an END statement, check and fill the end using matching block start.
210Allowed values are 'blink, 'no-blink, and nil, which determine
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211whether to blink the matching beginning."
212 :type '(choice (const blink) (const no-blink) (const nil))
213 :group 'f90)
034a9d40 214
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215(defcustom f90-break-delimiters "[-+\\*/><=,% \t]"
216 "*Regexp holding list of delimiters at which lines may be broken."
217 :type 'regexp
218 :group 'f90)
034a9d40 219
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220(defcustom f90-break-before-delimiters t
221 "*Non-nil causes `f90-do-auto-fill' to break lines before delimiters."
d9d41ec6 222 :type 'boolean
fcad5199 223 :group 'f90)
034a9d40 224
fcad5199 225(defcustom f90-auto-keyword-case nil
034a9d40 226 "*Automatic case conversion of keywords.
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227 The options are 'downcase-word, 'upcase-word, 'capitalize-word and nil"
228 :type '(choice (const downcase-word) (const upcase-word)
229 (const capitalize-word) (const nil))
230 :group 'f90)
231
232(defcustom f90-leave-line-no nil
233 "*If nil, left-justify linenumbers."
234 :type 'boolean
235 :group 'f90)
236
237(defcustom f90-startup-message t
238 "*Non-nil displays a startup message when F90 mode is first called."
239 :type 'boolean
240 :group 'f90)
034a9d40 241
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242(defconst f90-keywords-re
243 ;;("allocate" "allocatable" "assign" "assignment" "backspace" "block"
244 ;;"call" "case" "character" "close" "common" "complex" "contains"
245 ;;"continue" "cycle" "data" "deallocate" "dimension" "do" "double" "else"
246 ;;"elseif" "elsewhere" "end" "enddo" "endfile" "endif" "entry" "equivalence"
247 ;;"exit" "external" "forall" "format" "function" "goto" "if" "implicit"
248 ;;"include" "inquire" "integer" "intent" "interface" "intrinsic" "logical"
c80718cc 249 ;;"module" "namelist" "none" "nullify" "only" "open" "operator" "optional" "parameter"
ee30478d 250 ;;"pause" "pointer" "precision" "print" "private" "procedure" "program"
c80718cc 251 ;;"public" "read" "real" "recursive" "result" "return" "rewind" "save" "select"
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252 ;;"sequence" "stop" "subroutine" "target" "then" "type" "use" "where"
253 ;;"while" "write")
254 (concat
255 "\\<\\(a\\(llocat\\(able\\|e\\)\\|ssign\\(\\|ment\\)\\)\\|b\\(ackspace\\|"
256 "lock\\)\\|c\\(a\\(ll\\|se\\)\\|haracter\\|lose\\|o\\(m\\(mon\\|plex\\)\\|"
257 "nt\\(ains\\|inue\\)\\)\\|ycle\\)\\|d\\(ata\\|eallocate\\|imension\\|"
258 "o\\(\\|uble\\)\\)\\|e\\(lse\\(\\|if\\|where\\)\\|n\\(d\\(\\|do\\|file\\|"
259 "if\\)\\|try\\)\\|quivalence\\|x\\(it\\|ternal\\)\\)\\|f\\(or\\(all\\|"
260 "mat\\)\\|unction\\)\\|goto\\|i\\(f\\|mplicit\\|n\\(clude\\|quire\\|t\\("
261 "e\\(ger\\|nt\\|rface\\)\\|rinsic\\)\\)\\)\\|logical\\|module\\|n\\("
c80718cc 262 "amelist\\|one\\|ullify\\)\\|o\\(nly\\|p\\(en\\|erator\\|tional\\)\\)\\|p\\(a\\("
ee30478d 263 "rameter\\|use\\)\\|ointer\\|r\\(ecision\\|i\\(nt\\|vate\\)\\|o\\("
c80718cc 264 "cedure\\|gram\\)\\)\\|ublic\\)\\|re\\(a[dl]\\|cursive\\|sult\\|turn\\|wind\\)\\|"
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265 "s\\(ave\\|e\\(lect\\|quence\\)\\|top\\|ubroutine\\)\\|t\\(arget\\|hen\\|"
266 "ype\\)\\|use\\|w\\(h\\(ere\\|ile\\)\\|rite\\)\\)\\>")
267 "Regexp for F90 keywords.")
268
269(defconst f90-keywords-level-3-re
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270 ;; ("allocate" "allocatable" "assign" "assignment" "backspace" "close"
271 ;; "deallocate" "dimension" "endfile" "entry" "equivalence" "external"
272 ;; "inquire" "intent" "intrinsic" "nullify" "only" "open" "operator"
273 ;; "optional" "parameter" "pause" "pointer" "print" "private" "public"
274 ;; "read" "recursive" "result" "rewind" "save" "select" "sequence"
275 ;; "target" "write")
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276 (concat
277 "\\<\\(a\\(llocat\\(able\\|e\\)\\|ssign\\(\\|ment\\)\\)\\|backspace\\|"
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278 "close\\|d\\(eallocate\\|imension\\)\\|e\\(n\\(dfile\\|try\\)\\|"
279 "quivalence\\|xternal\\)\\|"
280 "in\\(quire\\|t\\(ent\\|rinsic\\)\\)\\|nullify\\|"
281 "o\\(nly\\|p\\(en\\|erator\\|tional\\)\\)\\|"
ee30478d 282 "p\\(a\\(rameter\\|use\\)\\|ointer\\|ri\\(nt\\|vate\\)\\|ublic\\)\\|re\\("
c80718cc 283 "ad\\|cursive\\|sult\\|wind\\)\\|s\\(ave\\|e\\(lect\\|quence\\)\\)\\|target\\|"
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284 "write\\)\\>")
285"Keyword-regexp for font-lock level >= 3.")
286
287
288(defconst f90-procedures-re
289 ;; ("abs" "achar" "acos" "adjustl" "adjustr" "aimag" "aint" "all" "allocated"
290 ;; "anint" "any" "asin" "associated" "atan" "atan2" "bit_size" "btest"
291 ;; "ceiling" "char" "cmplx" "conjg" "cos" "cosh" "count" "cshift"
292 ;; "date_and_time" "dble" "digits" "dim" "dot_product" "dprod" "eoshift"
293 ;; "epsilon" "exp" "exponent" "floor" "fraction" "huge" "iachar" "iand"
294 ;; "ibclr" "ibits" "ibset" "ichar" "ieor" "index" "int" "ior" "ishft"
295 ;; "ishftc" "kind" "lbound" "len" "len_trim" "lge" "lgt" "lle" "llt" "log"
296 ;; "logical" "log10" "matmul" "max" "maxexponent" "maxloc" "maxval" "merge"
297 ;; "min" "minexponent" "minloc" "minval" "mod" "modulo" "mvbits" "nearest"
298 ;; "nint" "not" "pack" "precision" "present" "product" "radix"
299 ;; "random_number" "random_seed" "range" "real" "repeat" "reshape"
300 ;; "rrspacing" "scale" "scan" "selected_int_kind" "selected_real_kind"
301 ;; "set_exponent" "shape" "sign" "sin" "sinh" "size" "spacing" "spread"
302 ;; "sqrt" "sum" "system_clock" "tan" "tanh" "tiny" "transfer" "transpose"
303 ;; "trim" "ubound" "unpack" "verify")
a7acbbe4 304 ;; A left parenthesis to avoid highlighting non-procedures.
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305 ;; Real is taken out here to avoid highlighting declarations.
306 (concat
307 "\\<\\(a\\(bs\\|c\\(har\\|os\\)\\|djust[lr]\\|i\\(mag\\|nt\\)\\|ll\\(\\|"
308 "ocated\\)\\|n\\(int\\|y\\)\\|s\\(in\\|sociated\\)\\|tan2?\\)\\|b\\("
309 "it_size\\|test\\)\\|c\\(eiling\\|har\\|mplx\\|o\\(njg\\|sh?\\|unt\\)\\|"
310 "shift\\)\\|d\\(ate_and_time\\|ble\\|i\\(gits\\|m\\)\\|ot_product\\|prod"
311 "\\)\\|e\\(oshift\\|psilon\\|xp\\(\\|onent\\)\\)\\|f\\(loor\\|"
312 "raction\\)\\|huge\\|i\\(a\\(char\\|nd\\)\\|b\\(clr\\|its\\|set\\)\\|"
313 "char\\|eor\\|n\\(dex\\|t\\)\\|or\\|shftc?\\)\\|kind\\|l\\(bound\\|"
314 "en\\(\\|_trim\\)\\|g[et]\\|l[et]\\|og\\(\\|10\\|ical\\)\\)\\|m\\(a\\("
315 "tmul\\|x\\(\\|exponent\\|loc\\|val\\)\\)\\|erge\\|in\\(\\|exponent\\|"
316 "loc\\|val\\)\\|od\\(\\|ulo\\)\\|vbits\\)\\|n\\(earest\\|int\\|ot\\)\\|"
317 "p\\(ack\\|r\\(e\\(cision\\|sent\\)\\|oduct\\)\\)\\|r\\(a\\(dix\\|n\\("
318 "dom_\\(number\\|seed\\)\\|ge\\)\\)\\|e\\(peat\\|shape\\)\\|rspacing\\)\\|"
319 "s\\(ca\\(le\\|n\\)\\|e\\(lected_\\(int_kind\\|real_kind\\)\\|"
320 "t_exponent\\)\\|hape\\|i\\(gn\\|nh?\\|ze\\)\\|p\\(acing\\|read\\)\\|"
321 "qrt\\|um\\|ystem_clock\\)\\|t\\(anh?\\|iny\\|r\\(ans\\(fer\\|pose\\)\\|"
322 "im\\)\\)\\|u\\(bound\\|npack\\)\\|verify\\)[ \t]*(")
323 "Regexp whose first part matches F90 intrinsic procedures.")
324
325(defconst f90-operators-re
326;; "and" "or" "not" "eqv" "neqv" "eq" "ne" "lt" "le" "gt" "ge" "true" "false"
327 (concat
328 "\\.\\(and\\|eqv?\\|false\\|g[et]\\|l[et]\\|n\\(e\\(\\|qv\\)\\|"
329 "ot\\)\\|or\\|true\\)\\.")
330 "Regexp matching intrinsic operators.")
331
332(defconst f90-hpf-keywords-re
333 ;; Intrinsic procedures
334 ;; ("all_prefix" "all_scatter" "all_suffix" "any_prefix" "any_scatter"
335 ;; "any_suffix" "copy_prefix" "copy_scatter" "copy_suffix" "count_prefix"
336 ;; "count_scatter" "count_suffix" "grade_down" "grade_up" "hpf_alignment"
337 ;; "hpf_template" "hpf_distribution" "iall" "iall_prefix" "iall_scatter"
338 ;; "iall_suffix" "iany" "iany_prefix" "iany_scatter" "iany_suffix" "iparity"
339 ;; "iparity_prefix" "iparity_scatter" "iparity_suffix" "leadz"
340 ;; "maxval_prefix" "maxval_scatter" "maxval_suffix" "minval_prefix"
341 ;; "minval_scatter" "minval_suffix" "parity" "parity_prefix"
342 ;; "parity_scatter" "parity_suffix" "popcnt" "poppar" "product_prefix"
343 ;; "product_scatter" "product_suffix" "sum_prefix" "sum_scatter"
344 ;; "sum_suffix" "ilen" "number_of_processors" "processors_shape")
345 ;; Directives
346 ;; ("align" "distribute" "dynamic" "inherit" "template" "processors"
347 ;; "realign" "redistribute" "independent")
348 ;; Keywords
349 ;; ("pure" "extrinsic" "new" "with" "onto" "block" "cyclic")
350 (concat
351 "\\<\\(a\\(l\\(ign\\|l_\\(prefix\\|s\\(catter\\|uffix\\)\\)\\)\\|ny_\\("
352 "prefix\\|s\\(catter\\|uffix\\)\\)\\)\\|block\\|c\\(o\\(py_\\(prefix\\|"
353 "s\\(catter\\|uffix\\)\\)\\|unt_\\(prefix\\|s\\(catter\\|uffix\\)\\)\\)\\|"
354 "yclic\\)\\|d\\(istribute\\|ynamic\\)\\|extrinsic\\|grade_\\(down\\|"
355 "up\\)\\|hpf_\\(alignment\\|distribution\\|template\\)\\|i\\(a\\(ll\\(\\|"
356 "_\\(prefix\\|s\\(catter\\|uffix\\)\\)\\)\\|ny\\(\\|_\\(prefix\\|s\\("
357 "catter\\|uffix\\)\\)\\)\\)\\|len\\|n\\(dependent\\|herit\\)\\|parity\\(\\|"
358 "_\\(prefix\\|s\\(catter\\|uffix\\)\\)\\)\\)\\|leadz\\|m\\(axval_\\("
359 "prefix\\|s\\(catter\\|uffix\\)\\)\\|inval_\\(prefix\\|s\\(catter\\|"
360 "uffix\\)\\)\\)\\|n\\(ew\\|umber_of_processors\\)\\|onto\\|p\\(arity\\(\\|"
361 "_\\(prefix\\|s\\(catter\\|uffix\\)\\)\\)\\|op\\(cnt\\|par\\)\\|ro\\("
362 "cessors\\(\\|_shape\\)\\|duct_\\(prefix\\|s\\(catter\\|uffix\\)\\)\\)\\|"
363 "ure\\)\\|re\\(align\\|distribute\\)\\|sum_\\(prefix\\|s\\(catter\\|"
364 "uffix\\)\\)\\|template\\|with\\)\\>")
365 "Regexp for all HPF keywords, procedures and directives.")
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366
367;; Highlighting patterns
368
ee30478d 369(defvar f90-font-lock-keywords-1
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370 (list ; Emacs
371 '("\\<\\(end[ \t]*\\(program\\|module\\|function\\|subroutine\\|type\\)\\)\\>[ \t]*\\(\\sw+\\)?"
372 (1 font-lock-keyword-face) (3 font-lock-function-name-face nil t))
373 '("\\<\\(program\\|call\\|module\\|subroutine\\|function\\|use\\)\\>[ \t]*\\(\\sw+\\)?"
374 (1 font-lock-keyword-face) (2 font-lock-function-name-face nil t))
375 ;; Special highlighting of "module procedure foo-list"
376 '("\\<\\(module[ \t]*procedure\\)\\>" (1 font-lock-keyword-face t))
377 ;; Highlight definition of new type
378 '("\\<\\(type\\)[ \t]*\\(,.*::[ \t]*\\|[ \t]+\\)\\(\\sw+\\)"
379 (1 font-lock-keyword-face) (3 font-lock-function-name-face))
380 "\\<\\(\\(end[ \t]*\\)?\\(interface\\|block[ \t]*data\\)\\|contains\\)\\>")
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381 "This does fairly subdued highlighting of comments and function calls.")
382
383(defvar f90-font-lock-keywords-2
384 (append f90-font-lock-keywords-1
b974df0a 385 (list
ee30478d 386 ;; Variable declarations (avoid the real function call)
b974df0a 387 '("^[ \t0-9]*\\(real\\|integer\\|c\\(haracter\\|omplex\\)\\|logical\\|type[ \t]*(\\sw+)\\)\\(.*::\\|[ \t]*(.*)\\)?\\([^!\n]*\\)"
ee30478d 388 (1 font-lock-type-face) (4 font-lock-variable-name-face))
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389 ;; do, if, select, where, and forall constructs
390 '("\\<\\(end[ \t]*\\(do\\|if\\|select\\|forall\\|where\\)\\)\\>\\([ \t]+\\(\\sw+\\)\\)?"
ee30478d 391 (1 font-lock-keyword-face) (3 font-lock-reference-face nil t))
7cae52cf 392 '("^[ \t0-9]*\\(\\(\\sw+\\)[ \t]*:[ \t]*\\)?\\(\\(if\\|do\\([ \t]*while\\)?\\|select[ \t]*case\\|where\\|forall\\)\\)\\>"
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393 (2 font-lock-reference-face nil t) (3 font-lock-keyword-face))
394 ;; implicit declaration
395 '("\\<\\(implicit\\)[ \t]*\\(real\\|integer\\|c\\(haracter\\|omplex\\)\\|logical\\|type[ \t]*(\\sw+)\\|none\\)\\>" (1 font-lock-keyword-face) (2 font-lock-type-face))
396 '("\\<\\(namelist\\|common\\)[ \t]*\/\\(\\sw+\\)?\/" (1 font-lock-keyword-face) (2 font-lock-reference-face nil t))
7cae52cf 397 "\\<else\\([ \t]*if\\|where\\)?\\>"
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398 "\\<\\(then\\|continue\\|format\\|include\\|stop\\|return\\)\\>"
399 '("\\<\\(exit\\|cycle\\)[ \t]*\\(\\sw+\\)?\\>"
400 (1 font-lock-keyword-face) (2 font-lock-reference-face nil t))
c80718cc 401 '("\\<\\(case\\)[ \t]*\\(default\\|(\\)" . 1)
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402 '("\\<\\(do\\|go *to\\)\\>[ \t]*\\([0-9]+\\)"
403 (1 font-lock-keyword-face) (2 font-lock-reference-face))
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404 ;; line numbers (lines whose first character after number is letter)
405 '("^[ \t]*\\([0-9]+\\)[ \t]*[a-z]+" (1 font-lock-reference-face t))))
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406 "Highlights declarations, do-loops and other constructions")
407
408(defvar f90-font-lock-keywords-3
409 (append f90-font-lock-keywords-2
034a9d40 410 (list
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411 f90-keywords-level-3-re
412 f90-operators-re
413 (if (string-match "XEmacs" emacs-version)
414 (append (list f90-procedures-re) '(1 font-lock-keyword-face t))
415 (list f90-procedures-re '(1 font-lock-keyword-face t)))
416 "\\<real\\>" ; Avoid overwriting real defs.
417 ))
418 "Highlights all F90 keywords and intrinsic procedures.")
419
420(defvar f90-font-lock-keywords-4
421 (append f90-font-lock-keywords-3
422 (list f90-hpf-keywords-re))
423 "Highlights all F90 and HPF keywords.")
424
425(defvar f90-font-lock-keywords
426 f90-font-lock-keywords-2
427 "*Default expressions to highlight in F90 mode.")
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428
429;; syntax table
430(defvar f90-mode-syntax-table nil
431 "Syntax table in use in F90 mode buffers.")
432
433(if f90-mode-syntax-table
434 ()
435 (setq f90-mode-syntax-table (make-syntax-table))
436 (modify-syntax-entry ?\! "<" f90-mode-syntax-table) ; beg. comment
437 (modify-syntax-entry ?\n ">" f90-mode-syntax-table) ; end comment
438 (modify-syntax-entry ?_ "w" f90-mode-syntax-table) ; underscore in names
439 (modify-syntax-entry ?\' "\"" f90-mode-syntax-table) ; string quote
440 (modify-syntax-entry ?\" "\"" f90-mode-syntax-table) ; string quote
441 (modify-syntax-entry ?\` "w" f90-mode-syntax-table) ; for abbrevs
442 (modify-syntax-entry ?\r " " f90-mode-syntax-table) ; return is whitespace
443 (modify-syntax-entry ?+ "." f90-mode-syntax-table)
444 (modify-syntax-entry ?- "." f90-mode-syntax-table)
445 (modify-syntax-entry ?= "." f90-mode-syntax-table)
446 (modify-syntax-entry ?* "." f90-mode-syntax-table)
447 (modify-syntax-entry ?/ "." f90-mode-syntax-table)
448 (modify-syntax-entry ?\\ "/" f90-mode-syntax-table)) ; escape chars
449
450;; keys
451(defvar f90-mode-map ()
452 "Keymap used in F90 mode.")
ee30478d 453
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454(if f90-mode-map
455 ()
456 (setq f90-mode-map (make-sparse-keymap))
457 (define-key f90-mode-map "`" 'f90-abbrev-start)
458 (define-key f90-mode-map "\C-c;" 'f90-comment-region)
459 (define-key f90-mode-map "\C-\M-a" 'f90-beginning-of-subprogram)
460 (define-key f90-mode-map "\C-\M-e" 'f90-end-of-subprogram)
461 (define-key f90-mode-map "\C-\M-h" 'f90-mark-subprogram)
462 (define-key f90-mode-map "\C-\M-q" 'f90-indent-subprogram)
463 (define-key f90-mode-map "\C-j" 'f90-indent-new-line) ; LFD equals C-j
464 (define-key f90-mode-map "\r" 'newline)
465 (define-key f90-mode-map "\C-c\r" 'f90-break-line)
466 ;; (define-key f90-mode-map [M-return] 'f90-break-line)
467 (define-key f90-mode-map "\C-c\C-d" 'f90-join-lines)
468 (define-key f90-mode-map "\C-c\C-f" 'f90-fill-region)
469 (define-key f90-mode-map "\C-c\C-p" 'f90-previous-statement)
470 (define-key f90-mode-map "\C-c\C-n" 'f90-next-statement)
471 (define-key f90-mode-map "\C-c\C-w" 'f90-insert-end)
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472 (define-key f90-mode-map "\t" 'f90-indent-line)
473 (define-key f90-mode-map "," 'f90-electric-insert)
474 (define-key f90-mode-map "+" 'f90-electric-insert)
475 (define-key f90-mode-map "-" 'f90-electric-insert)
476 (define-key f90-mode-map "*" 'f90-electric-insert)
477 (define-key f90-mode-map "/" 'f90-electric-insert))
ee30478d 478
b974df0a 479
034a9d40 480;; menus
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481(if (string-match "XEmacs" emacs-version)
482 (defvar f90-xemacs-menu
483 '("F90"
484 ["Indent Subprogram" f90-indent-subprogram t]
485 ["Mark Subprogram" f90-mark-subprogram t]
486 ["Beginning of Subprogram" f90-beginning-of-subprogram t]
487 ["End of Subprogram" f90-end-of-subprogram t]
488 "-----"
489 ["(Un)Comment Region" f90-comment-region t]
490 ["Indent Region" indent-region t]
491 ["Fill Region" f90-fill-region t]
492 "-----"
493 ["Break Line at Point" f90-break-line t]
494 ["Join with Next Line" f90-join-lines t]
495 ["Insert Newline" newline t]
b974df0a 496 ["Insert Block End" f90-insert-end t]
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497 "-----"
498 ["Upcase Keywords (buffer)" f90-upcase-keywords t]
499 ["Upcase Keywords (region)" f90-upcase-region-keywords
500 t]
501 ["Capitalize Keywords (buffer)" f90-capitalize-keywords t]
502 ["Capitalize Keywords (region)"
503 f90-capitalize-region-keywords t]
504 ["Downcase Keywords (buffer)" f90-downcase-keywords t]
505 ["Downcase Keywords (region)"
506 f90-downcase-region-keywords t]
507 "-----"
508 ["Toggle abbrev-mode" abbrev-mode t]
b974df0a 509 ["Toggle auto-fill" auto-fill-mode t])
ee30478d 510 "XEmacs menu for F90 mode.")
db97b872 511 ;; Emacs
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512
513 (defvar f90-change-case-menu
514 (let ((map (make-sparse-keymap "Change Keyword Case")))
515
516 (define-key map [dkr] (cons "Downcase Keywords (region)"
517 'f90-downcase-region-keywords))
518 (put 'f90-downcase-region-keywords 'menu-enable 'mark-active)
519
520 (define-key map [ckr] (cons "Capitalize Keywords (region)"
521 'f90-capitalize-region-keywords))
522 (put 'f90-capitalize-region-keywords 'menu-enable 'mark-active)
523
524 (define-key map [ukr] (cons "Upcase Keywords (region)"
525 'f90-upcase-region-keywords))
526 (put 'f90-upcase-region-keywords 'menu-enable 'mark-active)
527
528 (define-key map [line] (list "-----------------"))
529
530 (define-key map [dkb] (cons "Downcase Keywords (buffer)"
531 'f90-downcase-keywords))
532
533 (define-key map [ckb] (cons "Capitalize Keywords (buffer)"
534 'f90-capitalize-keywords))
535
536 (define-key map [ukb] (cons "Upcase Keywords (buffer)"
537 'f90-upcase-keywords))
538 map)
539 "Submenu for change of case.")
540 (defalias 'f90-change-case-menu f90-change-case-menu)
541
542 ;; font-lock-menu and function calls
543 (defalias 'f90-font-lock-on 'font-lock-mode)
544 (defalias 'f90-font-lock-off 'font-lock-mode)
545 (put 'f90-font-lock-on 'menu-enable 'font-lock-mode)
546 (put 'f90-font-lock-off 'menu-enable '(not font-lock-mode))
547
548 (defun f90-font-lock-1 ()
549 (interactive)
550 "Set font-lock-keywords to f90-font-lock-keywords-1."
551 (font-lock-mode 1)
552 (setq font-lock-keywords f90-font-lock-keywords-1)
553 (font-lock-fontify-buffer))
554
555 (defun f90-font-lock-2 ()
556 (interactive)
557 "Set font-lock-keywords to f90-font-lock-keywords-2."
558 (font-lock-mode 1)
559 (setq font-lock-keywords f90-font-lock-keywords-2)
560 (font-lock-fontify-buffer))
561
562 (defun f90-font-lock-3 ()
563 (interactive)
564 "Set font-lock-keywords to f90-font-lock-keywords-3."
565 (font-lock-mode 1)
566 (setq font-lock-keywords f90-font-lock-keywords-3)
567 (font-lock-fontify-buffer))
568
569 (defun f90-font-lock-4 ()
570 (interactive)
571 "Set font-lock-keywords to f90-font-lock-keywords-4."
572 (font-lock-mode 1)
573 (setq font-lock-keywords f90-font-lock-keywords-4)
574 (font-lock-fontify-buffer))
575
576 (defvar f90-font-lock-menu
577 (let ((map (make-sparse-keymap "f90-font-lock-menu")))
578 (define-key map [h4] (cons "Maximum highlighting (level 4)"
579 'f90-font-lock-4))
580 (define-key map [h3] (cons "Heavy highlighting (level 3)"
581 'f90-font-lock-3))
582 (define-key map [h2] (cons "Default highlighting (level 2)"
583 'f90-font-lock-2))
584 (define-key map [h1] (cons "Light highlighting (level 1)"
585 'f90-font-lock-1))
586 (define-key map [line] (list "-----------------"))
587 (define-key map [floff] (cons "Turn off font-lock-mode"
588 'f90-font-lock-on))
589 (define-key map [flon] (cons "Turn on font-lock-mode"
590 'f90-font-lock-off))
591 map)
592 "Submenu for highlighting using font-lock-mode.")
593 (defalias 'f90-font-lock-menu f90-font-lock-menu)
594
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595 (define-key f90-mode-map [menu-bar] (make-sparse-keymap))
596 (define-key f90-mode-map [menu-bar f90]
597 (cons "F90" (make-sparse-keymap "f90")))
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598
599 (define-key f90-mode-map [menu-bar f90 f90-imenu-menu]
600 '("Add imenu Menu" . f90-add-imenu-menu))
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601 (define-key f90-mode-map [menu-bar f90 abbrev-mode]
602 '("Toggle abbrev-mode" . abbrev-mode))
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603 (define-key f90-mode-map [menu-bar f90 auto-fill-mode]
604 '("Toggle auto-fill" . auto-fill-mode))
605 (define-key f90-mode-map [menu-bar f90 line1]
606 '("----"))
607 (define-key f90-mode-map [menu-bar f90 f90-change-case-menu]
608 (cons "Change Keyword Case" 'f90-change-case-menu))
609 (define-key f90-mode-map [menu-bar f90 f90-font-lock-menu]
610 (cons "Highlighting" 'f90-font-lock-menu))
611 (define-key f90-mode-map [menu-bar f90 line2]
612 '("----"))
613
034a9d40 614 (define-key f90-mode-map [menu-bar f90 f90-insert-end]
b974df0a 615 '("Insert Block End" . f90-insert-end))
034a9d40 616 (define-key f90-mode-map [menu-bar f90 f90-join-lines]
658e4ee5 617 '("Join with Next Line" . f90-join-lines))
034a9d40 618 (define-key f90-mode-map [menu-bar f90 f90-break-line]
658e4ee5 619 '("Break Line at Point" . f90-break-line))
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620
621 (define-key f90-mode-map [menu-bar f90 line3]
622 '("----"))
623
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624 (define-key f90-mode-map [menu-bar f90 f90-fill-region]
625 '("Fill Region" . f90-fill-region))
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626 (put 'f90-fill-region 'menu-enable 'mark-active)
627
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628 (define-key f90-mode-map [menu-bar f90 indent-region]
629 '("Indent Region" . indent-region))
b974df0a 630
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631 (define-key f90-mode-map [menu-bar f90 f90-comment-region]
632 '("(Un)Comment Region" . f90-comment-region))
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633 (put 'f90-comment-region 'menu-enable 'mark-active)
634
635 (define-key f90-mode-map [menu-bar f90 line4]
636 '("----"))
637
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638 (define-key f90-mode-map [menu-bar f90 f90-end-of-subprogram]
639 '("End of Subprogram" . f90-end-of-subprogram))
640 (define-key f90-mode-map [menu-bar f90 f90-beginning-of-subprogram]
641 '("Beginning of Subprogram" . f90-beginning-of-subprogram))
642 (define-key f90-mode-map [menu-bar f90 f90-mark-subprogram]
643 '("Mark Subprogram" . f90-mark-subprogram))
644 (define-key f90-mode-map [menu-bar f90 f90-indent-subprogram]
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645 '("Indent Subprogram" . f90-indent-subprogram))
646 )
647
ee30478d 648;; Regexps for finding program structures.
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649(defconst f90-blocks-re
650 "\\(block[ \t]*data\\|do\\|if\\|interface\\|function\\|module\\|\
651program\\|select\\|subroutine\\|type\\|where\\|forall\\)\\>")
652(defconst f90-program-block-re
653 "\\(program\\|module\\|subroutine\\|function\\)")
654(defconst f90-else-like-re
c80718cc 655 "\\(else\\([ \t]*if\\|where\\)?\\|case[ \t]*\\(default\\|(\\)\\)")
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656(defconst f90-end-if-re
657 "end[ \t]*\\(if\\|select\\|where\\|forall\\)\\>")
658(defconst f90-end-type-re
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659 "end[ \t]*\\(type\\|interface\\|block[ \t]*data\\)")
660(defconst f90-type-def-re
661 "\\<\\(type\\)[ \t]*\\(,.*::[ \t]*\\|[ \t]+\\)\\(\\sw+\\)")
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662(defconst f90-no-break-re "\\(\\*\\*\\|//\\|=>\\)")
663;; A temporary position to make region operators faster
664(defvar f90-cache-position nil)
665(make-variable-buffer-local 'f90-cache-position)
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666;; A flag to tell whether f90-imenu is turned on.
667(defvar f90-imenu nil)
668(make-variable-buffer-local 'f90-imenu)
ee30478d 669
b974df0a 670\f
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671;; Imenu support
672(defvar f90-imenu-generic-expression
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673 (let ((good-char "[^!\"\&\n \t]") (not-e "[^e!\n\"\& \t]")
674 (not-n "[^n!\n\"\& \t]") (not-d "[^d!\n\"\& \t]"))
675 (list
676 '(nil "^[ \t0-9]*program[ \t]+\\(\\sw+\\)" 1)
677 '("Modules" "^[ \t0-9]*module[ \t]+\\(\\sw+\\)[ \t]*\\(!\\|$\\)" 1)
678 '("Types" "^[ \t0-9]*type[ \t]+\\(\\sw+\\)" 1)
679 (list
680 "Procedures"
681 (concat
682 "^[ \t0-9]*"
683 "\\("
684 ;; At least three non-space characters before function/subroutine
685 ;; Check that the last three non-space characters don't spell E N D
686 "[^!\"\&\n]*\\("
687 not-e good-char good-char "\\|"
688 good-char not-n good-char "\\|"
689 good-char good-char not-d "\\)"
690 "\\|"
691 ;; Less than three non-space characters before function/subroutine
692 good-char "?" good-char "?"
693 "\\)"
694 "[ \t]*\\(function\\|subroutine\\)[ \t]+\\(\\sw+\\)")
695 4)))
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696 "imenu generic expression for F90 mode.")
697
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698(defun f90-add-imenu-menu ()
699 (interactive)
700 "Add an imenu menu to the menubar."
701 (if (not f90-imenu)
702 (progn
703 (imenu-add-to-menubar "F90-imenu")
704 (redraw-frame (selected-frame))
705 (setq f90-imenu t))
706 (message "%s" "F90-imenu already exists.")))
707(put 'f90-add-imenu-menu 'menu-enable '(not f90-imenu))
708
709
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710;; When compiling under GNU Emacs, load imenu during compilation. If
711;; you have 19.22 or earlier, comment this out, or get imenu.
712(and (fboundp 'eval-when-compile)
713 (eval-when-compile
714 (if (not (string-match "XEmacs" emacs-version))
715 (require 'imenu))
716 ()))
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717\f
718;; abbrevs have generally two letters, except standard types `c, `i, `r, `t
719(defvar f90-mode-abbrev-table nil)
720(if f90-mode-abbrev-table
721 ()
722 (let ((ac abbrevs-changed))
723 (define-abbrev-table 'f90-mode-abbrev-table ())
724 (define-abbrev f90-mode-abbrev-table "`al" "allocate" nil)
ee30478d 725 (define-abbrev f90-mode-abbrev-table "`ab" "allocatable" nil)
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726 (define-abbrev f90-mode-abbrev-table "`as" "assignment" nil)
727 (define-abbrev f90-mode-abbrev-table "`ba" "backspace" nil)
728 (define-abbrev f90-mode-abbrev-table "`bd" "block data" nil)
729 (define-abbrev f90-mode-abbrev-table "`c" "character" nil)
730 (define-abbrev f90-mode-abbrev-table "`cl" "close" nil)
731 (define-abbrev f90-mode-abbrev-table "`cm" "common" nil)
732 (define-abbrev f90-mode-abbrev-table "`cx" "complex" nil)
733 (define-abbrev f90-mode-abbrev-table "`cn" "contains" nil)
734 (define-abbrev f90-mode-abbrev-table "`cy" "cycle" nil)
735 (define-abbrev f90-mode-abbrev-table "`de" "deallocate" nil)
736 (define-abbrev f90-mode-abbrev-table "`df" "define" nil)
737 (define-abbrev f90-mode-abbrev-table "`di" "dimension" nil)
738 (define-abbrev f90-mode-abbrev-table "`dw" "do while" nil)
739 (define-abbrev f90-mode-abbrev-table "`el" "else" nil)
740 (define-abbrev f90-mode-abbrev-table "`eli" "else if" nil)
741 (define-abbrev f90-mode-abbrev-table "`elw" "elsewhere" nil)
742 (define-abbrev f90-mode-abbrev-table "`eq" "equivalence" nil)
743 (define-abbrev f90-mode-abbrev-table "`ex" "external" nil)
744 (define-abbrev f90-mode-abbrev-table "`ey" "entry" nil)
745 (define-abbrev f90-mode-abbrev-table "`fl" "forall" nil)
746 (define-abbrev f90-mode-abbrev-table "`fo" "format" nil)
747 (define-abbrev f90-mode-abbrev-table "`fu" "function" nil)
748 (define-abbrev f90-mode-abbrev-table "`fa" ".false." nil)
749 (define-abbrev f90-mode-abbrev-table "`im" "implicit none" nil)
750 (define-abbrev f90-mode-abbrev-table "`in " "include" nil)
751 (define-abbrev f90-mode-abbrev-table "`i" "integer" nil)
752 (define-abbrev f90-mode-abbrev-table "`it" "intent" nil)
753 (define-abbrev f90-mode-abbrev-table "`if" "interface" nil)
754 (define-abbrev f90-mode-abbrev-table "`lo" "logical" nil)
755 (define-abbrev f90-mode-abbrev-table "`mo" "module" nil)
756 (define-abbrev f90-mode-abbrev-table "`na" "namelist" nil)
757 (define-abbrev f90-mode-abbrev-table "`nu" "nullify" nil)
758 (define-abbrev f90-mode-abbrev-table "`op" "optional" nil)
759 (define-abbrev f90-mode-abbrev-table "`pa" "parameter" nil)
760 (define-abbrev f90-mode-abbrev-table "`po" "pointer" nil)
761 (define-abbrev f90-mode-abbrev-table "`pr" "print" nil)
762 (define-abbrev f90-mode-abbrev-table "`pi" "private" nil)
763 (define-abbrev f90-mode-abbrev-table "`pm" "program" nil)
764 (define-abbrev f90-mode-abbrev-table "`pu" "public" nil)
765 (define-abbrev f90-mode-abbrev-table "`r" "real" nil)
766 (define-abbrev f90-mode-abbrev-table "`rc" "recursive" nil)
767 (define-abbrev f90-mode-abbrev-table "`rt" "return" nil)
768 (define-abbrev f90-mode-abbrev-table "`rw" "rewind" nil)
769 (define-abbrev f90-mode-abbrev-table "`se" "select" nil)
770 (define-abbrev f90-mode-abbrev-table "`sq" "sequence" nil)
771 (define-abbrev f90-mode-abbrev-table "`su" "subroutine" nil)
772 (define-abbrev f90-mode-abbrev-table "`ta" "target" nil)
773 (define-abbrev f90-mode-abbrev-table "`tr" ".true." nil)
774 (define-abbrev f90-mode-abbrev-table "`t" "type" nil)
775 (define-abbrev f90-mode-abbrev-table "`wh" "where" nil)
776 (define-abbrev f90-mode-abbrev-table "`wr" "write" nil)
777 (setq abbrevs-changed ac)))
778\f
779;;;###autoload
780(defun f90-mode ()
781 "Major mode for editing Fortran 90 code in free format.
782
783\\[f90-indent-new-line] corrects current indentation and creates new\
784 indented line.
785\\[f90-indent-line] indents the current line correctly.
786\\[f90-indent-subprogram] indents the current subprogram.
787
788Type `? or `\\[help-command] to display a list of built-in\
789 abbrevs for F90 keywords.
790
791Key definitions:
792\\{f90-mode-map}
793
794Variables controlling indentation style and extra features:
795
796 f90-do-indent
797 Extra indentation within do blocks. (default 3)
798 f90-if-indent
799 Extra indentation within if/select case/where/forall blocks. (default 3)
800 f90-type-indent
801 Extra indentation within type/interface/block-data blocks. (default 3)
802 f90-program-indent
803 Extra indentation within program/module/subroutine/function blocks.
804 (default 2)
805 f90-continuation-indent
806 Extra indentation applied to continuation lines. (default 5)
807 f90-comment-region
808 String inserted by \\[f90-comment-region] at start of each line in
809 region. (default \"!!!$\")
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810 f90-indented-comment-re
811 Regexp determining the type of comment to be intended like code.
812 (default \"!\")
813 f90-directive-comment-re
814 Regexp of comment-like directive like \"!HPF\\\\$\", not to be indented.
815 (default \"!hpf\\\\$\")
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816 f90-break-delimiters
817 Regexp holding list of delimiters at which lines may be broken.
818 (default \"[-+*/><=,% \\t]\")
819 f90-break-before-delimiters
820 Non-nil causes `f90-do-auto-fill' to break lines before delimiters.
821 (default t)
822 f90-beginning-ampersand
823 Automatic insertion of \& at beginning of continuation lines. (default t)
824 f90-smart-end
825 From an END statement, check and fill the end using matching block start.
826 Allowed values are 'blink, 'no-blink, and nil, which determine
827 whether to blink the matching beginning.) (default 'blink)
828 f90-auto-keyword-case
829 Automatic change of case of keywords. (default nil)
830 The possibilities are 'downcase-word, 'upcase-word, 'capitalize-word.
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831 f90-leave-line-no
832 Do not left-justify line numbers. (default nil)
833 f90-startup-message
834 Set to nil to inhibit message first time F90 mode is used. (default t)
f885e95c 835 f90-keywords-re
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836 List of keywords used for highlighting/upcase-keywords etc.
837
838Turning on F90 mode calls the value of the variable `f90-mode-hook'
839with no args, if that value is non-nil."
840 (interactive)
841 (kill-all-local-variables)
842 (setq major-mode 'f90-mode)
843 (setq mode-name "F90")
844 (setq local-abbrev-table f90-mode-abbrev-table)
845 (set-syntax-table f90-mode-syntax-table)
846 (use-local-map f90-mode-map)
847 (make-local-variable 'indent-line-function)
848 (setq indent-line-function 'f90-indent-line)
849 (make-local-variable 'indent-region-function)
850 (setq indent-region-function 'f90-indent-region)
851 (make-local-variable 'require-final-newline)
852 (setq require-final-newline t)
853 (make-local-variable 'comment-start)
854 (setq comment-start "!")
855 (make-local-variable 'comment-start-skip)
856 (setq comment-start-skip "!+ *")
857 (make-local-variable 'comment-indent-function)
858 (setq comment-indent-function 'f90-comment-indent)
859 (make-local-variable 'abbrev-all-caps)
860 (setq abbrev-all-caps t)
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861 (make-local-variable 'normal-auto-fill-function)
862 (setq normal-auto-fill-function 'f90-do-auto-fill)
72e80cad 863 (setq indent-tabs-mode nil)
034a9d40 864 ;; Setting up things for font-lock
7cae52cf 865 (if (string-match "XEmacs" emacs-version)
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866 (progn
867 (put 'f90-mode 'font-lock-keywords-case-fold-search t)
868 (if (and current-menubar
869 (not (assoc "F90" current-menubar)))
870 (progn
871 (set-buffer-menubar (copy-sequence current-menubar))
872 (add-submenu nil f90-xemacs-menu)))
873 (make-local-variable 'font-lock-keywords)
874 (setq font-lock-keywords f90-font-lock-keywords))
875 ;; Emacs
876 (make-local-variable 'font-lock-defaults)
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877 (setq font-lock-defaults '(f90-font-lock-keywords nil t))
878
ee30478d 879 ;; Tell imenu how to handle f90.
c0b08eb0 880 (setq imenu-case-fold-search t)
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881 (make-local-variable 'imenu-generic-expression)
882 (setq imenu-generic-expression f90-imenu-generic-expression))
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883 (run-hooks 'f90-mode-hook)
884 (if f90-startup-message
c04f7d65 885 (message "Emacs F90 mode; please report bugs to %s" bug-f90-mode))
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886 (setq f90-startup-message nil))
887\f
888;; inline-functions
889(defsubst f90-get-beg-of-line ()
890 (save-excursion (beginning-of-line) (point)))
891
892(defsubst f90-get-end-of-line ()
893 (save-excursion (end-of-line) (point)))
894
895(defsubst f90-in-string ()
896 (let ((beg-pnt
897 (if (and f90-cache-position (> (point) f90-cache-position))
898 f90-cache-position
899 (point-min))))
900 (nth 3 (parse-partial-sexp beg-pnt (point)))))
901
902(defsubst f90-in-comment ()
903 (let ((beg-pnt
904 (if (and f90-cache-position (> (point) f90-cache-position))
905 f90-cache-position
906 (point-min))))
907 (nth 4 (parse-partial-sexp beg-pnt (point)))))
908
909(defsubst f90-line-continued ()
910 (save-excursion
911 (let ((bol (f90-get-beg-of-line)))
912 (end-of-line)
913 (while (f90-in-comment)
914 (search-backward "!" bol)
915 (skip-chars-backward "!"))
916 (skip-chars-backward " \t")
917 (= (preceding-char) ?&))))
918
919(defsubst f90-current-indentation ()
920 "Return indentation of current line.
921Line-numbers are considered whitespace characters."
922 (save-excursion
923 (beginning-of-line) (skip-chars-forward " \t0-9")
924 (current-column)))
925
926(defsubst f90-indent-to (col &optional no-line-number)
927 "Indent current line to column COL.
928If no-line-number nil, jump over a possible line-number."
929 (beginning-of-line)
930 (if (not no-line-number)
931 (skip-chars-forward " \t0-9"))
932 (delete-horizontal-space)
933 (if (zerop (current-column))
934 (indent-to col)
935 (indent-to col 1)))
936
937(defsubst f90-match-piece (arg)
938 (if (match-beginning arg)
939 (buffer-substring (match-beginning arg) (match-end arg))))
940
941(defsubst f90-get-present-comment-type ()
942 (save-excursion
943 (let ((type nil) (eol (f90-get-end-of-line)))
944 (if (f90-in-comment)
945 (progn
946 (beginning-of-line)
947 (re-search-forward "[!]+" eol)
948 (while (f90-in-string)
949 (re-search-forward "[!]+" eol))
950 (setq type (buffer-substring (match-beginning 0) (match-end 0)))))
951 type)))
952
953(defsubst f90-equal-symbols (a b)
954 "Compare strings neglecting case and allowing for nil value."
955 (let ((a-local (if a (downcase a) nil))
956 (b-local (if b (downcase b) nil)))
957 (equal a-local b-local)))
958
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959;; XEmacs 19.11 & 19.12 gives back a single char when matching an empty regular
960;; expression. Therefore, the next 2 functions are longer than necessary.
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961
962(defsubst f90-looking-at-do ()
963 "Return (\"do\" name) if a do statement starts after point.
964Name is nil if the statement has no label."
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965 (if (looking-at "\\(\\(\\sw+\\)[ \t]*\:\\)?[ \t]*\\(do\\)\\>")
966 (let (label
967 (struct (f90-match-piece 3)))
968 (if (looking-at "\\(\\sw+\\)[ \t]*\:")
969 (setq label (f90-match-piece 1)))
970 (list struct label))))
971
972(defsubst f90-looking-at-select-case ()
973 "Return (\"select\" name) if a select-case statement starts after point.
974Name is nil if the statement has no label."
975 (if (looking-at "\\(\\(\\sw+\\)[ \t]*\:\\)?[ \t]*\\(select\\)[ \t]*case[ \t]*(")
976 (let (label
977 (struct (f90-match-piece 3)))
978 (if (looking-at "\\(\\sw+\\)[ \t]*\:")
979 (setq label (f90-match-piece 1)))
980 (list struct label))))
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981
982(defsubst f90-looking-at-if-then ()
983 "Return (\"if\" name) if an if () then statement starts after point.
984Name is nil if the statement has no label."
985 (save-excursion
986 (let (struct (label nil))
ee30478d 987 (if (looking-at "\\(\\(\\sw+\\)[ \t]*\:\\)?[ \t]*\\(if\\)\\>")
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988 (progn
989 (setq struct (f90-match-piece 3))
ee30478d 990 (if (looking-at "\\(\\sw+\\)[ \t]*\:")
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991 (setq label (f90-match-piece 1)))
992 (goto-char (scan-lists (point) 1 0))
993 (skip-chars-forward " \t")
ee30478d 994 (if (or (looking-at "then\\>")
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995 (if (f90-line-continued)
996 (progn
997 (f90-next-statement)
998 (skip-chars-forward " \t0-9&")
ee30478d 999 (looking-at "then\\>"))))
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1000 (list struct label)))))))
1001
034a9d40 1002(defsubst f90-looking-at-where-or-forall ()
24c86814 1003 "Return (kind name) if a where or forall block starts after point.
7cae52cf 1004Name is nil if the statement has no label."
24c86814 1005 (if (looking-at "\\(\\(\\sw+\\)[ \t]*\:\\)?[ \t]*\\(where\\|forall\\)[ \t]*(.*)[ \t]*\\(!\\|$\\)")
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1006 (let (label
1007 (struct (f90-match-piece 3)))
1008 (if (looking-at "\\(\\sw+\\)[ \t]*\:")
1009 (setq label (f90-match-piece 1)))
1010 (list struct label))))
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1011
1012(defsubst f90-looking-at-type-like ()
1013 "Return (kind name) at the start of a type/interface/block-data block.
1014Name is non-nil only for type."
1015 (cond
ee30478d 1016 ((looking-at f90-type-def-re)
72e80cad 1017 (list (f90-match-piece 1) (f90-match-piece 3)))
ee30478d 1018 ((looking-at "\\(interface\\|block[\t]*data\\)\\>")
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1019 (list (f90-match-piece 1) nil))))
1020
1021(defsubst f90-looking-at-program-block-start ()
1022 "Return (kind name) if a program block with name name starts after point."
1023 (cond
ee30478d 1024 ((looking-at "\\(program\\)[ \t]+\\(\\sw+\\)\\>")
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1025 (list (f90-match-piece 1) (f90-match-piece 2)))
1026 ((and (not (looking-at "module[ \t]*procedure\\>"))
ee30478d 1027 (looking-at "\\(module\\)[ \t]+\\(\\sw+\\)\\>"))
034a9d40 1028 (list (f90-match-piece 1) (f90-match-piece 2)))
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1029 ((and (not (looking-at "end[ \t]*\\(function\\|subroutine\\)"))
1030 (looking-at "[^!\"\&\n]*\\(function\\|subroutine\\)[ \t]+\\(\\sw+\\)"))
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1031 (list (f90-match-piece 1) (f90-match-piece 2)))))
1032
1033(defsubst f90-looking-at-program-block-end ()
1034 "Return list of type and name of end of block."
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1035 (if (looking-at (concat "end[ \t]*" f90-blocks-re
1036 "?\\([ \t]+\\(\\sw+\\)\\)?\\>"))
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1037 (list (f90-match-piece 1) (f90-match-piece 3))))
1038
1039(defsubst f90-comment-indent ()
1040 (cond ((looking-at "!!!") 0)
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1041 ((and f90-directive-comment-re
1042 (looking-at f90-directive-comment-re)) 0)
034a9d40 1043 ((looking-at (regexp-quote f90-comment-region)) 0)
ee30478d 1044 ((looking-at f90-indented-comment-re)
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1045 (f90-calculate-indent))
1046 (t (skip-chars-backward " \t")
1047 (max (if (bolp) 0 (1+ (current-column))) comment-column))))
1048
1049(defsubst f90-present-statement-cont ()
1050 "Return continuation properties of present statement."
1051 (let (pcont cont)
1052 (save-excursion
1053 (setq pcont (if (f90-previous-statement) (f90-line-continued) nil)))
1054 (setq cont (f90-line-continued))
1055 (cond ((and (not pcont) (not cont)) 'single)
1056 ((and (not pcont) cont) 'begin)
1057 ((and pcont (not cont)) 'end)
1058 ((and pcont cont) 'middle)
1059 (t (error)))))
1060
1061(defsubst f90-indent-line-no ()
1062 (if f90-leave-line-no
1063 ()
1064 (if (and (not (zerop (skip-chars-forward " \t")))
1065 (looking-at "[0-9]"))
1066 (delete-horizontal-space)))
1067 (skip-chars-forward " \t0-9"))
1068
1069(defsubst f90-no-block-limit ()
1070 (let ((eol (f90-get-end-of-line)))
1071 (save-excursion
1072 (not (or (looking-at "end")
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1073 (looking-at "\\(do\\|if\\|else\\(if\\|where\\)?\
1074\\|select[ \t]*case\\|case\\|where\\|forall\\)\\>")
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1075 (looking-at "\\(program\\|module\\|interface\\|\
1076block[ \t]*data\\)\\>")
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1077 (looking-at "\\(contains\\|\\sw+[ \t]*:\\)")
1078 (looking-at f90-type-def-re)
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1079 (re-search-forward "\\(function\\|subroutine\\)" eol t))))))
1080
1081(defsubst f90-update-line ()
1082 (let (bol eol)
ee30478d 1083 (if f90-auto-keyword-case
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1084 (progn (setq bol (f90-get-beg-of-line)
1085 eol (f90-get-end-of-line))
1086 (if f90-auto-keyword-case
4337739c 1087 (f90-change-keywords f90-auto-keyword-case bol eol))))))
034a9d40 1088\f
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1089(defun f90-electric-insert ()
1090 (interactive)
1091 "Calls f90-do-auto-fill at each operator insertion."
1092 (self-insert-command 1)
1093 (f90-update-line)
1094 (if auto-fill-function (f90-do-auto-fill)))
1095
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1096(defun f90-get-correct-indent ()
1097 "Get correct indent for a line starting with line number.
1098Does not check type and subprogram indentation."
1099 (let ((epnt (f90-get-end-of-line)) icol cont)
1100 (save-excursion
1101 (while (and (f90-previous-statement)
1102 (or (progn
1103 (setq cont (f90-present-statement-cont))
1104 (or (eq cont 'end) (eq cont 'middle)))
1105 (looking-at "[ \t]*[0-9]"))))
1106 (setq icol (current-indentation))
1107 (beginning-of-line)
1108 (if (re-search-forward "\\(if\\|do\\|select\\|where\\|forall\\)"
1109 (f90-get-end-of-line) t)
1110 (progn
1111 (beginning-of-line) (skip-chars-forward " \t")
1112 (cond ((f90-looking-at-do)
1113 (setq icol (+ icol f90-do-indent)))
1114 ((or (f90-looking-at-if-then)
1115 (f90-looking-at-where-or-forall)
1116 (f90-looking-at-select-case))
1117 (setq icol (+ icol f90-if-indent))))
1118 (end-of-line)))
1119 (while (re-search-forward
ee30478d 1120 "\\(if\\|do\\|select\\|where\\|forall\\)" epnt t)
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1121 (beginning-of-line) (skip-chars-forward " \t0-9")
1122 (cond ((f90-looking-at-do)
1123 (setq icol (+ icol f90-do-indent)))
1124 ((or (f90-looking-at-if-then)
1125 (f90-looking-at-where-or-forall)
1126 (f90-looking-at-select-case))
1127 (setq icol (+ icol f90-if-indent)))
1128 ((looking-at f90-end-if-re)
1129 (setq icol (- icol f90-if-indent)))
ee30478d 1130 ((looking-at "end[ \t]*do\\>")
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1131 (setq icol (- icol f90-do-indent))))
1132 (end-of-line))
1133 icol)))
1134
1135
1136(defun f90-calculate-indent ()
1137 "Calculate the indent column based on previous statements."
1138 (interactive)
1139 (let (icol cont (case-fold-search t) (pnt (point)))
1140 (save-excursion
1141 (if (not (f90-previous-statement))
1142 (setq icol 0)
1143 (setq cont (f90-present-statement-cont))
1144 (if (eq cont 'end)
1145 (while (not (eq 'begin (f90-present-statement-cont)))
1146 (f90-previous-statement)))
1147 (cond ((eq cont 'begin)
1148 (setq icol (+ (f90-current-indentation)
1149 f90-continuation-indent)))
1150 ((eq cont 'middle) (setq icol(current-indentation)))
1151 (t (setq icol (f90-current-indentation))
1152 (skip-chars-forward " \t")
1153 (if (looking-at "[0-9]")
1154 (setq icol (f90-get-correct-indent))
1155 (cond ((or (f90-looking-at-if-then)
1156 (f90-looking-at-where-or-forall)
1157 (f90-looking-at-select-case)
1158 (looking-at f90-else-like-re))
1159 (setq icol (+ icol f90-if-indent)))
1160 ((f90-looking-at-do)
1161 (setq icol (+ icol f90-do-indent)))
1162 ((f90-looking-at-type-like)
1163 (setq icol (+ icol f90-type-indent)))
1164 ((or (f90-looking-at-program-block-start)
1165 (looking-at "contains[ \t]*\\($\\|!\\)"))
1166 (setq icol (+ icol f90-program-indent)))))
1167 (goto-char pnt)
1168 (beginning-of-line)
1169 (cond ((looking-at "[ \t]*$"))
1170 ((looking-at "[ \t]*#") ; Check for cpp directive.
1171 (setq icol 0))
1172 (t
1173 (skip-chars-forward " \t0-9")
1174 (cond ((or (looking-at f90-else-like-re)
1175 (looking-at f90-end-if-re))
1176 (setq icol (- icol f90-if-indent)))
ee30478d 1177 ((looking-at "end[ \t]*do\\>")
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1178 (setq icol (- icol f90-do-indent)))
1179 ((looking-at f90-end-type-re)
1180 (setq icol (- icol f90-type-indent)))
1181 ((or (looking-at "contains[ \t]*\\(!\\|$\\)")
1182 (f90-looking-at-program-block-end))
1183 (setq icol (- icol f90-program-indent))))))
1184 ))))
1185 icol))
1186\f
1187;; Statement = statement line, a line which is neither blank, nor a comment.
1188(defun f90-previous-statement ()
1189 "Move point to beginning of the previous F90 statement.
1190Return nil if no previous statement is found."
1191 (interactive)
1192 (let (not-first-statement)
1193 (beginning-of-line)
1194 (while (and (setq not-first-statement (zerop (forward-line -1)))
ee30478d 1195 (looking-at "[ \t0-9]*\\(!\\|$\\|#\\)")))
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1196 not-first-statement))
1197
1198(defun f90-next-statement ()
1199 "Move point to beginning of the next F90 statement.
1200Return nil if no later statement is found."
1201 (interactive)
1202 (let (not-last-statement)
1203 (beginning-of-line)
1204 (while (and (setq not-last-statement
1205 (and (zerop (forward-line 1))
1206 (not (eobp))))
1207 (looking-at "[ \t0-9]*\\(!\\|$\\)")))
1208 not-last-statement))
1209
1210(defun f90-beginning-of-subprogram ()
1211 "Move point to the beginning of subprogram.
1212Return (type name) or nil if not found."
1213 (interactive)
1214 (let ((count 1) (case-fold-search t) matching-beg)
1215 (beginning-of-line) (skip-chars-forward " \t0-9")
1216 (if (setq matching-beg (f90-looking-at-program-block-start))
1217 (setq count (- count 1)))
1218 (while (and (not (zerop count))
1219 (re-search-backward f90-program-block-re nil 'move))
1220 (beginning-of-line) (skip-chars-forward " \t0-9")
1221 (cond
1222 ((setq matching-beg (f90-looking-at-program-block-start))
1223 (setq count (- count 1)))
1224 ((f90-looking-at-program-block-end)
1225 (setq count (+ count 1)))))
1226 (beginning-of-line)
1227 (if (zerop count)
1228 matching-beg
1229 (message "No beginning-found.")
1230 nil)))
1231
1232(defun f90-end-of-subprogram ()
1233 "Move point to the end of subprogram.
1234Return (type name) or nil if not found."
1235 (interactive)
1236 (let ((count 1) (case-fold-search t) matching-end)
1237 (beginning-of-line) (skip-chars-forward " \t0-9")
1238 (if (setq matching-end (f90-looking-at-program-block-end))
1239 (setq count (1- count)))
1240 (end-of-line)
1241 (while (and (not (zerop count))
1242 (re-search-forward f90-program-block-re nil 'move))
1243 (beginning-of-line) (skip-chars-forward " \t0-9")
1244 (cond ((f90-looking-at-program-block-start)
1245 (setq count (+ count 1)))
1246 ((setq matching-end (f90-looking-at-program-block-end))
1247 (setq count (1- count ))))
1248 (end-of-line))
1249 (forward-line 1)
1250 (if (zerop count)
1251 matching-end
1252 (message "No end found.")
1253 nil)))
1254
1255(defun f90-mark-subprogram ()
1256 "Put mark at end of F90 subprogram, point at beginning.
1257Marks are pushed and highlight (grey shadow) is turned on."
1258 (interactive)
1259 (let ((pos (point)) program)
1260 (f90-end-of-subprogram)
1261 (push-mark (point) t)
1262 (goto-char pos)
1263 (setq program (f90-beginning-of-subprogram))
1264 ;; The keywords in the preceding lists assume case-insensitivity.
ee30478d 1265 (if (string-match "XEmacs" emacs-version)
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1266 (zmacs-activate-region)
1267 (setq mark-active t)
1268 (setq deactivate-mark nil))
1269 program))
1270
1271(defun f90-comment-region (beg-region end-region)
1272 "Comment/uncomment every line in the region.
1273Insert f90-comment-region at the beginning of every line in the region
1274or, if already present, remove it."
1275 (interactive "*r")
1276 (let ((end (make-marker)))
1277 (set-marker end end-region)
1278 (goto-char beg-region)
1279 (beginning-of-line)
1280 (if (looking-at (regexp-quote f90-comment-region))
1281 (delete-region (point) (match-end 0))
1282 (insert f90-comment-region))
1283 (while (and (zerop (forward-line 1))
1284 (< (point) (marker-position end)))
1285 (if (looking-at (regexp-quote f90-comment-region))
1286 (delete-region (point) (match-end 0))
1287 (insert f90-comment-region)))
1288 (set-marker end nil)))
1289
1290(defun f90-indent-line (&optional no-update)
1291 "Indent current line as F90 code."
1292 (interactive)
1293 (let (indent (no-line-number nil) (pos (make-marker)) (case-fold-search t))
1294 (set-marker pos (point))
1295 (beginning-of-line) ; Digits after & \n are not line-no
1296 (if (save-excursion (and (f90-previous-statement) (f90-line-continued)))
1297 (progn (setq no-line-number t) (skip-chars-forward " \t"))
1298 (f90-indent-line-no))
1299 (if (looking-at "!")
1300 (setq indent (f90-comment-indent))
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1301 (if (and (looking-at "end") f90-smart-end)
1302 (f90-match-end))
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1303 (setq indent (f90-calculate-indent)))
1304 (if (zerop (- indent (current-column)))
1305 nil
1306 (f90-indent-to indent no-line-number))
1307 ;; If initial point was within line's indentation,
1308 ;; position after the indentation. Else stay at same point in text.
1309 (if (< (point) (marker-position pos))
1310 (goto-char (marker-position pos)))
1311 (if (not no-update) (f90-update-line))
7cae52cf 1312 (if auto-fill-function (f90-do-auto-fill))
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1313 (set-marker pos nil)))
1314
1315(defun f90-indent-new-line ()
1316 "Reindent the current F90 line, insert a newline and indent the newline.
1317An abbrev before point is expanded if `abbrev-mode' is non-nil.
1318If run in the middle of a line, the line is not broken."
1319 (interactive)
1320 (let (string cont (case-fold-search t))
1321 (if abbrev-mode (expand-abbrev))
1322 (beginning-of-line) ; Reindent where likely to be needed.
1323 (f90-indent-line-no)
1324 (if (or (looking-at "\\(end\\|else\\|!\\)"))
1325 (f90-indent-line 'no-update))
1326 (end-of-line)
1327 (delete-horizontal-space) ;Destroy trailing whitespace
1328 (setq string (f90-in-string))
1329 (setq cont (f90-line-continued))
1330 (if (and string (not cont)) (insert "&"))
1331 (f90-update-line)
1332 (newline)
1333 (if (or string (and cont f90-beginning-ampersand)) (insert "&"))
1334 (f90-indent-line 'no-update)))
1335
1336
1337(defun f90-indent-region (beg-region end-region)
1338 "Indent every line in region by forward parsing."
1339 (interactive "*r")
1340 (let ((end-region-mark (make-marker)) (save-point (point-marker))
1341 (block-list nil) ind-lev ind-curr ind-b cont
1342 struct beg-struct end-struct)
1343 (set-marker end-region-mark end-region)
1344 (goto-char beg-region)
1345 ;; first find a line which is not a continuation line or comment
1346 (beginning-of-line)
ee30478d 1347 (while (and (looking-at "[ \t]*[0-9]*\\(!\\|#\\|[ \t]*$\\)")
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1348 (progn (f90-indent-line 'no-update)
1349 (zerop (forward-line 1)))
1350 (< (point) end-region-mark)))
1351 (setq cont (f90-present-statement-cont))
1352 (while (and (or (eq cont 'middle) (eq cont 'end))
1353 (f90-previous-statement))
1354 (setq cont (f90-present-statement-cont)))
1355 ;; process present line for beginning of block
1356 (setq f90-cache-position (point))
1357 (f90-indent-line 'no-update)
1358 (setq ind-lev (f90-current-indentation))
1359 (setq ind-curr ind-lev)
1360 (beginning-of-line) (skip-chars-forward " \t0-9")
1361 (setq struct nil)
1362 (setq ind-b (cond ((setq struct (f90-looking-at-do)) f90-do-indent)
1363 ((or (setq struct (f90-looking-at-if-then))
1364 (setq struct (f90-looking-at-select-case))
1365 (setq struct (f90-looking-at-where-or-forall))
1366 (looking-at f90-else-like-re))
1367 f90-if-indent)
1368 ((setq struct (f90-looking-at-type-like))
1369 f90-type-indent)
1370 ((or(setq struct (f90-looking-at-program-block-start))
1371 (looking-at "contains[ \t]*\\($\\|!\\)"))
1372 f90-program-indent)))
1373 (if ind-b (setq ind-lev (+ ind-lev ind-b)))
1374 (if struct (setq block-list (cons struct block-list)))
1375 (while (and (f90-line-continued) (zerop (forward-line 1))
1376 (< (point) end-region-mark))
1377 (if (not (zerop (- (current-indentation)
1378 (+ ind-curr f90-continuation-indent))))
1379 (f90-indent-to (+ ind-curr f90-continuation-indent) 'no-line-no)))
1380 ;; process all following lines
1381 (while (and (zerop (forward-line 1)) (< (point) end-region-mark))
1382 (beginning-of-line)
1383 (f90-indent-line-no)
1384 (setq f90-cache-position (point))
1385 (cond ((looking-at "[ \t]*$") (setq ind-curr 0))
1386 ((looking-at "[ \t]*#") (setq ind-curr 0))
1387 ((looking-at "!") (setq ind-curr (f90-comment-indent)))
1388 ((f90-no-block-limit) (setq ind-curr ind-lev))
1389 ((looking-at f90-else-like-re) (setq ind-curr
1390 (- ind-lev f90-if-indent)))
1391 ((looking-at "contains[ \t]*\\($\\|!\\)")
1392 (setq ind-curr (- ind-lev f90-program-indent)))
1393 ((setq ind-b
1394 (cond ((setq struct (f90-looking-at-do)) f90-do-indent)
1395 ((or (setq struct (f90-looking-at-if-then))
1396 (setq struct (f90-looking-at-select-case))
1397 (setq struct (f90-looking-at-where-or-forall)))
1398 f90-if-indent)
1399 ((setq struct (f90-looking-at-type-like))
1400 f90-type-indent)
1401 ((setq struct (f90-looking-at-program-block-start))
1402 f90-program-indent)))
1403 (setq ind-curr ind-lev)
1404 (if ind-b (setq ind-lev (+ ind-lev ind-b)))
1405 (setq block-list (cons struct block-list)))
1406 ((setq end-struct (f90-looking-at-program-block-end))
1407 (setq beg-struct (car block-list)
1408 block-list (cdr block-list))
1409 (if f90-smart-end
1410 (save-excursion
1411 (f90-block-match (car beg-struct)(car (cdr beg-struct))
1412 (car end-struct)(car (cdr end-struct)))))
1413 (setq ind-b
1414 (cond ((looking-at f90-end-if-re) f90-if-indent)
1415 ((looking-at "end[ \t]*do\\>") f90-do-indent)
1416 ((looking-at f90-end-type-re) f90-type-indent)
1417 ((f90-looking-at-program-block-end)
1418 f90-program-indent)))
1419 (if ind-b (setq ind-lev (- ind-lev ind-b)))
1420 (setq ind-curr ind-lev))
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1421 (t (setq ind-curr ind-lev)))
1422 ;; do the indentation if necessary
1423 (if (not (zerop (- ind-curr (current-column))))
1424 (f90-indent-to ind-curr))
1425 (while (and (f90-line-continued) (zerop (forward-line 1))
1426 (< (point) end-region-mark))
1427 (if (not (zerop (- (current-indentation)
1428 (+ ind-curr f90-continuation-indent))))
1429 (f90-indent-to (+ ind-curr f90-continuation-indent) 'no-line-no))))
1430 ;; restore point etc
1431 (setq f90-cache-position nil)
1432 (goto-char save-point)
1433 (set-marker end-region-mark nil)
1434 (set-marker save-point nil)
b974df0a 1435 (if (string-match "XEmacs" emacs-version)
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1436 (zmacs-deactivate-region)
1437 (deactivate-mark))))
1438
1439(defun f90-indent-subprogram ()
1440 "Properly indent the subprogram which contains point."
1441 (interactive)
1442 (save-excursion
1443 (let (program)
1444 (setq program (f90-mark-subprogram))
1445 (if program
1446 (progn
2a74bdc1 1447 (message "Indenting %s %s..."
7f03b2b5 1448 (car program) (car (cdr program)))
034a9d40 1449 (f90-indent-region (point) (mark))
2a74bdc1 1450 (message "Indenting %s %s...done"
7f03b2b5 1451 (car program) (car (cdr program))))
2a74bdc1 1452 (message "Indenting the whole file...")
034a9d40 1453 (f90-indent-region (point) (mark))
2a74bdc1 1454 (message "Indenting the whole file...done")))))
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1455
1456;; autofill and break-line
1457(defun f90-break-line (&optional no-update)
1458 "Break line at point, insert continuation marker(s) and indent."
1459 (interactive)
1460 (let (ctype)
1461 (cond ((f90-in-string)
1462 (insert "&") (newline) (insert "&"))
1463 ((f90-in-comment)
034a9d40 1464 (setq ctype (f90-get-present-comment-type))
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1465 (newline)
1466 (insert ctype))
1467 (t (insert "&")
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1468 (if (not no-update) (f90-update-line))
1469 (newline)
b974df0a 1470 (if f90-beginning-ampersand (insert "&")))))
7cae52cf 1471 (f90-indent-line))
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1472
1473(defun f90-find-breakpoint ()
1474 "From fill-column, search backward for break-delimiter."
1475 (let ((bol (f90-get-beg-of-line)))
1476 (re-search-backward f90-break-delimiters bol)
1477 (if f90-break-before-delimiters
1478 (progn (backward-char)
1479 (if (not (looking-at f90-no-break-re))
1480 (forward-char)))
1481 (if (looking-at f90-no-break-re)
1482 (forward-char 2)
1483 (forward-char)))))
1484
034a9d40 1485(defun f90-do-auto-fill ()
7cae52cf 1486 "Break line if non-white characters beyond fill-column. Also, update line. "
034a9d40 1487 (interactive)
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1488 ;; Break the line before or after the last delimiter (non-word char) if
1489 ;; position is beyond fill-column.
034a9d40 1490 ;; Will not break **, //, or => (specified by f90-no-break-re).
7cae52cf 1491 (f90-update-line)
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1492 (while (> (current-column) fill-column)
1493 (let ((pos-mark (point-marker)))
ee30478d 1494 (move-to-column fill-column)
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1495 (if (not (f90-in-string))
1496 (f90-find-breakpoint))
1497 (f90-break-line)
1498 (goto-char pos-mark)
1499 (set-marker pos-mark nil))))
1500
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1501
1502(defun f90-join-lines ()
1503 "Join present line with next line, if this line ends with \&."
1504 (interactive)
1505 (let (pos (oldpos (point)))
1506 (end-of-line)
1507 (skip-chars-backward " \t")
1508 (cond ((= (preceding-char) ?&)
1509 (delete-char -1)
1510 (setq pos (point))
1511 (forward-line 1)
1512 (skip-chars-forward " \t")
1513 (if (looking-at "\&") (delete-char 1))
1514 (delete-region pos (point))
1515 (if (not (f90-in-string))
1516 (progn (delete-horizontal-space) (insert " ")))
1517 (if (and auto-fill-function
1518 (> (save-excursion (end-of-line)
1519 (current-column))
1520 fill-column))
1521 (f90-do-auto-fill))
1522 (goto-char oldpos)
1523 t))))
1524
1525(defun f90-fill-region (beg-region end-region)
1526 "Fill every line in region by forward parsing. Join lines if possible."
1527 (interactive "*r")
1528 (let ((end-region-mark (make-marker))
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1529 (f90-smart-end nil) (f90-auto-keyword-case nil) (go-on t)
1530 (auto-fill-function nil))
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1531 (set-marker end-region-mark end-region)
1532 (goto-char beg-region)
1533 (while go-on
1534 ;; join as much as possible
7cae52cf 1535 (while (f90-join-lines))
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1536 ;; chop the line if necessary
1537 (while (> (save-excursion (end-of-line) (current-column))
1538 fill-column)
1539 (move-to-column fill-column)
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1540 (f90-find-breakpoint)
1541 (f90-break-line 'no-update))
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1542 (setq go-on (and (< (point) (marker-position end-region-mark))
1543 (zerop (forward-line 1))))
1544 (setq f90-cache-position (point)))
034a9d40 1545 (setq f90-cache-position nil)
ee30478d 1546 (if (string-match "XEmacs" emacs-version)
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1547 (zmacs-deactivate-region)
1548 (deactivate-mark))))
1549\f
1550(defun f90-block-match (beg-block beg-name end-block end-name)
1551 "Match end-struct with beg-struct and complete end-block if possible.
1552Leave point at the end of line."
1553 (search-forward "end" (f90-get-end-of-line))
1554 (catch 'no-match
1555 (if (not (f90-equal-symbols beg-block end-block))
1556 (if end-block
1557 (progn
1558 (message "END %s does not match %s." end-block beg-block)
1559 (end-of-line)
1560 (throw 'no-match nil))
1561 (message "Inserting %s." beg-block)
1562 (insert (concat " " beg-block)))
1563 (search-forward end-block))
1564 (if (not (f90-equal-symbols beg-name end-name))
1565 (cond ((and beg-name (not end-name))
1566 (message "Inserting %s." beg-name)
1567 (insert (concat " " beg-name)))
1568 ((and beg-name end-name)
1569 (message "Replacing %s with %s." end-name beg-name)
1570 (search-forward end-name)
1571 (replace-match beg-name))
1572 ((and (not beg-name) end-name)
1573 (message "Deleting %s." end-name)
1574 (search-forward end-name)
1575 (replace-match "")))
1576 (if end-name (search-forward end-name)))
ee30478d 1577 (if (not (looking-at "[ \t]*!")) (delete-horizontal-space))))
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1578
1579(defun f90-match-end ()
1580 "From an end foo statement, find the corresponding foo including name."
1581 (interactive)
1582 (let ((count 1) (top-of-window (window-start)) (matching-beg nil)
1583 (end-point (point)) (case-fold-search t)
1584 beg-name end-name beg-block end-block end-struct)
1585 (if (save-excursion (beginning-of-line) (skip-chars-forward " \t0-9")
1586 (setq end-struct (f90-looking-at-program-block-end)))
1587 (progn
1588 (setq end-block (car end-struct))
1589 (setq end-name (car (cdr end-struct)))
1590 (save-excursion
1591 (beginning-of-line)
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1592 (while
1593 (and (not (zerop count))
1594 (let ((stop nil) notexist)
1595 (while (not stop)
1596 (setq notexist
1597 (not (re-search-backward
1598 (concat "\\(" f90-blocks-re "\\)") nil t)))
1599 (if notexist
1600 (setq stop t)
1601 (setq stop
1602 (not (or (f90-in-string)
1603 (f90-in-comment))))))
1604 (not notexist)))
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RS
1605 (beginning-of-line) (skip-chars-forward " \t0-9")
1606 (cond ((setq matching-beg
1607 (cond
1608 ((f90-looking-at-do))
1609 ((f90-looking-at-if-then))
1610 ((f90-looking-at-where-or-forall))
1611 ((f90-looking-at-select-case))
1612 ((f90-looking-at-type-like))
1613 ((f90-looking-at-program-block-start))))
1614 (setq count (- count 1)))
1615 ((looking-at (concat "end[ \t]*" f90-blocks-re "\\b"))
ee30478d 1616 (setq count (+ count 1)))))
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RS
1617 (if (not (zerop count))
1618 (message "No matching beginning.")
1619 (f90-update-line)
1620 (if (eq f90-smart-end 'blink)
1621 (if (< (point) top-of-window)
b974df0a 1622 (message "Matches %s: %s"
7f03b2b5
RS
1623 (what-line)
1624 (buffer-substring
1625 (progn (beginning-of-line) (point))
1626 (progn (end-of-line) (point))))
034a9d40
RS
1627 (sit-for 1)))
1628 (setq beg-block (car matching-beg))
1629 (setq beg-name (car (cdr matching-beg)))
1630 (goto-char end-point)
1631 (beginning-of-line)
1632 (f90-block-match beg-block beg-name end-block end-name)))))))
1633
1634(defun f90-insert-end ()
1635 "Inserts an complete end statement matching beginning of present block."
1636 (interactive)
1637 (let ((f90-smart-end (if f90-smart-end f90-smart-end 'blink)))
1638 (insert "end")
1639 (f90-indent-new-line)))
1640\f
1641;; abbrevs and keywords
1642
1643(defun f90-abbrev-start ()
1644 "Typing `\\[help-command] or `? lists all the F90 abbrevs.
1645Any other key combination is executed normally."
1646 (interactive)
ee30478d 1647 (let (e c)
034a9d40 1648 (insert last-command-char)
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KH
1649 (if (string-match "XEmacs" emacs-version)
1650 (progn
1651 (setq e (next-command-event))
1652 (setq c (event-to-character e)))
1653 (setq c (read-event)))
ee30478d
KH
1654 ;; insert char if not equal to `?'
1655 (if (or (= c ??) (eq c help-char))
034a9d40 1656 (f90-abbrev-help)
ee30478d
KH
1657 (if (string-match "XEmacs" emacs-version)
1658 (setq unread-command-event e)
034a9d40
RS
1659 (setq unread-command-events (list c))))))
1660
1661(defun f90-abbrev-help ()
1662 "List the currently defined abbrevs in F90 mode."
1663 (interactive)
1664 (message "Listing abbrev table...")
1665 (display-buffer (f90-prepare-abbrev-list-buffer))
1666 (message "Listing abbrev table...done"))
1667
1668(defun f90-prepare-abbrev-list-buffer ()
1669 (save-excursion
1670 (set-buffer (get-buffer-create "*Abbrevs*"))
1671 (erase-buffer)
1672 (insert-abbrev-table-description 'f90-mode-abbrev-table t)
1673 (goto-char (point-min))
1674 (set-buffer-modified-p nil)
1675 (edit-abbrevs-mode))
1676 (get-buffer-create "*Abbrevs*"))
1677
1678(defun f90-upcase-keywords ()
1679 "Upcase all F90 keywords in the buffer."
1680 (interactive)
1681 (f90-change-keywords 'upcase-word))
1682
1683(defun f90-capitalize-keywords ()
1684 "Capitalize all F90 keywords in the buffer."
1685 (interactive)
1686 (f90-change-keywords 'capitalize-word))
1687
1688(defun f90-downcase-keywords ()
1689 "Downcase all F90 keywords in the buffer."
1690 (interactive)
1691 (f90-change-keywords 'downcase-word))
1692
1693(defun f90-upcase-region-keywords (beg end)
1694 "Upcase all F90 keywords in the region."
1695 (interactive "*r")
1696 (f90-change-keywords 'upcase-word beg end))
1697
1698(defun f90-capitalize-region-keywords (beg end)
1699 "Capitalize all F90 keywords in the region."
1700 (interactive "*r")
1701 (f90-change-keywords 'capitalize-word beg end))
1702
1703(defun f90-downcase-region-keywords (beg end)
1704 "Downcase all F90 keywords in the region."
1705 (interactive "*r")
1706 (f90-change-keywords 'downcase-word beg end))
1707
1708;; Change the keywords according to argument.
1709(defun f90-change-keywords (change-word &optional beg end)
1710 (save-excursion
1711 (setq beg (if beg beg (point-min)))
1712 (setq end (if end end (point-max)))
1713 (let ((keyword-re
ee30478d
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1714 (concat "\\("
1715 f90-keywords-re "\\|" f90-procedures-re "\\|"
1716 f90-hpf-keywords-re "\\|" f90-operators-re "\\)"))
1717 (ref-point (point-min)) state
1718 (modified (buffer-modified-p)) saveword back-point)
034a9d40 1719 (goto-char beg)
ee30478d
KH
1720 (unwind-protect
1721 (while (re-search-forward keyword-re end t)
1722 (if (progn
1723 (setq state (parse-partial-sexp ref-point (point)))
1724 (or (nth 3 state) (nth 4 state)
1725 (save-excursion ; Check for cpp directive.
1726 (beginning-of-line)
1727 (skip-chars-forward " \t0-9")
1728 (looking-at "#"))))
1729 ()
1730 (setq ref-point (point)
1731 back-point (save-excursion (backward-word 1) (point)))
1732 (setq saveword (buffer-substring back-point ref-point))
1733 (funcall change-word -1)
1734 (or (string= saveword (buffer-substring back-point ref-point))
1735 (setq modified t))))
1736 (or modified (set-buffer-modified-p nil))))))
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RS
1737
1738(provide 'f90)
db97b872 1739
034a9d40 1740;;; f90.el ends here