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be010748 1;;; f90.el --- Fortran-90 mode (free format)
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2
3;; Copyright (C) 1995, 1996 Free Software Foundation, Inc.
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ee30478d 5;; Author: Torbj\"orn Einarsson <T.Einarsson@clab.ericsson.se>
c80718cc 6;; Created: Apr. 18, 1996
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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.
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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
94;; )
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95;; ;;The rest is not default.
96;; (abbrev-mode 1) ; turn on abbreviation mode
97;; (f90-auto-fill-mode 1) ; turn on auto-filling
ee30478d 98;; (turn-on-font-lock) ; for highlighting
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99;; (if f90-auto-keyword-case ; change case of all keywords on startup
100;; (f90-change-keywords f90-auto-keyword-case))
101;; ))
102;; in your .emacs file (the shown values are the defaults). You can also
103;; change the values of the lists f90-keywords etc.
104;; The auto-fill and abbreviation minor modes are accessible from the menu,
105;; or by using M-x f90-auto-fill-mode and M-x abbrev-mode, respectively.
106
107;; Remarks
108;; 1) Line numbers are by default left-justified. If f90-leave-line-no is
109;; non-nil, the line numbers are never touched.
110;; 2) Multi-; statements like > do i=1,20 ; j=j+i ; end do < are not handled
111;; correctly, but I imagine them to be rare.
ee30478d 112;; 3) Regexps for hilit19 are no longer supported.
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113;; 4) For FIXED FORMAT code, use the ordinary fortran mode.
114;; 5) This mode does not work under emacs-18.x.
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115;; 6) Preprocessor directives, i.e., lines starting with # are left-justified
116;; and are untouched by all case-changing commands. There is, at present, no
117;; mechanism for treating multi-line directives (continued by \ ).
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118;; 7) f77 do-loops do 10 i=.. ; ; 10 continue are not correctly indented.
119;; You are urged to use f90-do loops (with labels if you wish).
c80718cc 120;; 8) The highlighting mode under XEmacs is not as complete as under Emacs.
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121
122;; List of user commands
123;; f90-previous-statement f90-next-statement
124;; f90-beginning-of-subprogram f90-end-of-subprogram f90-mark-subprogram
125;; f90-comment-region
126;; f90-indent-line f90-indent-new-line
127;; f90-indent-region (can be called by calling indent-region)
128;; f90-indent-subprogram
129;; f90-break-line f90-join-lines
130;; f90-auto-fill-mode
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
136
137;; Thanks to all the people who have tested the mode. Special thanks to Jens
138;; Bloch Helmers for encouraging me to write this code, for creative
139;; suggestions as well as for the lists of hpf-commands.
140;; Also thanks to the authors of the fortran and pascal modes, on which some
141;; of this code is built.
142
143;;; Code:
b578f267 144
ee30478d 145(defconst bug-f90-mode "T.Einarsson@clab.ericsson.se"
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146 "Address of mailing list for F90 mode bugs.")
147
148;; User options
149(defvar f90-do-indent 3
150 "*Extra indentation applied to DO blocks.")
151
152(defvar f90-if-indent 3
153 "*Extra indentation applied to IF, SELECT CASE, WHERE and FORALL blocks.")
154
155(defvar f90-type-indent 3
156 "*Extra indentation applied to TYPE, INTERFACE and BLOCK DATA blocks.")
157
158(defvar f90-program-indent 2
159 "*Extra indentation applied to PROGRAM/MODULE/SUBROUTINE/FUNCTION blocks.")
160
161(defvar f90-continuation-indent 5
162 "*Extra indentation applied to F90 continuation lines.")
163
164(defvar f90-comment-region "!!$"
165 "*String inserted by \\[f90-comment-region]\
166 at start of each line in region.")
167
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168(defvar f90-indented-comment-re "!"
169 "*Regexp saying which comments to be indented like code.")
034a9d40 170
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171(defvar f90-directive-comment-re "!hpf\\$"
172 "*Regexp of comment-like directive like \"!HPF\\\\$\", not to be indented.")
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173
174(defvar f90-beginning-ampersand t
175 "*t makes automatic insertion of \& at beginning of continuation line.")
176
177(defvar f90-smart-end 'blink
178 "*From an END statement, check and fill the end using matching block start.
179Allowed values are 'blink, 'no-blink, and nil, which determine
180whether to blink the matching beginning.")
181
182(defvar f90-break-delimiters "[-+\\*/><=,% \t]"
183 "*Regexp holding list of delimiters at which lines may be broken.")
184
185(defvar f90-break-before-delimiters t
186 "*Non-nil causes `f90-do-auto-fill' to break lines before delimiters.")
187
188(defvar f90-auto-keyword-case nil
189 "*Automatic case conversion of keywords.
190 The options are 'downcase-word, 'upcase-word, 'capitalize-word and nil")
191
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192(defvar f90-leave-line-no nil
193 "*If nil, left-justify linenumbers.")
194
195(defvar f90-startup-message t
196 "*Non-nil displays a startup message when F90 mode is first called.")
197
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198(defconst f90-keywords-re
199 ;;("allocate" "allocatable" "assign" "assignment" "backspace" "block"
200 ;;"call" "case" "character" "close" "common" "complex" "contains"
201 ;;"continue" "cycle" "data" "deallocate" "dimension" "do" "double" "else"
202 ;;"elseif" "elsewhere" "end" "enddo" "endfile" "endif" "entry" "equivalence"
203 ;;"exit" "external" "forall" "format" "function" "goto" "if" "implicit"
204 ;;"include" "inquire" "integer" "intent" "interface" "intrinsic" "logical"
c80718cc 205 ;;"module" "namelist" "none" "nullify" "only" "open" "operator" "optional" "parameter"
ee30478d 206 ;;"pause" "pointer" "precision" "print" "private" "procedure" "program"
c80718cc 207 ;;"public" "read" "real" "recursive" "result" "return" "rewind" "save" "select"
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208 ;;"sequence" "stop" "subroutine" "target" "then" "type" "use" "where"
209 ;;"while" "write")
210 (concat
211 "\\<\\(a\\(llocat\\(able\\|e\\)\\|ssign\\(\\|ment\\)\\)\\|b\\(ackspace\\|"
212 "lock\\)\\|c\\(a\\(ll\\|se\\)\\|haracter\\|lose\\|o\\(m\\(mon\\|plex\\)\\|"
213 "nt\\(ains\\|inue\\)\\)\\|ycle\\)\\|d\\(ata\\|eallocate\\|imension\\|"
214 "o\\(\\|uble\\)\\)\\|e\\(lse\\(\\|if\\|where\\)\\|n\\(d\\(\\|do\\|file\\|"
215 "if\\)\\|try\\)\\|quivalence\\|x\\(it\\|ternal\\)\\)\\|f\\(or\\(all\\|"
216 "mat\\)\\|unction\\)\\|goto\\|i\\(f\\|mplicit\\|n\\(clude\\|quire\\|t\\("
217 "e\\(ger\\|nt\\|rface\\)\\|rinsic\\)\\)\\)\\|logical\\|module\\|n\\("
c80718cc 218 "amelist\\|one\\|ullify\\)\\|o\\(nly\\|p\\(en\\|erator\\|tional\\)\\)\\|p\\(a\\("
ee30478d 219 "rameter\\|use\\)\\|ointer\\|r\\(ecision\\|i\\(nt\\|vate\\)\\|o\\("
c80718cc 220 "cedure\\|gram\\)\\)\\|ublic\\)\\|re\\(a[dl]\\|cursive\\|sult\\|turn\\|wind\\)\\|"
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221 "s\\(ave\\|e\\(lect\\|quence\\)\\|top\\|ubroutine\\)\\|t\\(arget\\|hen\\|"
222 "ype\\)\\|use\\|w\\(h\\(ere\\|ile\\)\\|rite\\)\\)\\>")
223 "Regexp for F90 keywords.")
224
225(defconst f90-keywords-level-3-re
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226 ;; ("allocate" "allocatable" "assign" "assignment" "backspace" "close"
227 ;; "deallocate" "dimension" "endfile" "entry" "equivalence" "external"
228 ;; "inquire" "intent" "intrinsic" "nullify" "only" "open" "operator"
229 ;; "optional" "parameter" "pause" "pointer" "print" "private" "public"
230 ;; "read" "recursive" "result" "rewind" "save" "select" "sequence"
231 ;; "target" "write")
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232 (concat
233 "\\<\\(a\\(llocat\\(able\\|e\\)\\|ssign\\(\\|ment\\)\\)\\|backspace\\|"
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234 "close\\|d\\(eallocate\\|imension\\)\\|e\\(n\\(dfile\\|try\\)\\|"
235 "quivalence\\|xternal\\)\\|"
236 "in\\(quire\\|t\\(ent\\|rinsic\\)\\)\\|nullify\\|"
237 "o\\(nly\\|p\\(en\\|erator\\|tional\\)\\)\\|"
ee30478d 238 "p\\(a\\(rameter\\|use\\)\\|ointer\\|ri\\(nt\\|vate\\)\\|ublic\\)\\|re\\("
c80718cc 239 "ad\\|cursive\\|sult\\|wind\\)\\|s\\(ave\\|e\\(lect\\|quence\\)\\)\\|target\\|"
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240 "write\\)\\>")
241"Keyword-regexp for font-lock level >= 3.")
242
243
244(defconst f90-procedures-re
245 ;; ("abs" "achar" "acos" "adjustl" "adjustr" "aimag" "aint" "all" "allocated"
246 ;; "anint" "any" "asin" "associated" "atan" "atan2" "bit_size" "btest"
247 ;; "ceiling" "char" "cmplx" "conjg" "cos" "cosh" "count" "cshift"
248 ;; "date_and_time" "dble" "digits" "dim" "dot_product" "dprod" "eoshift"
249 ;; "epsilon" "exp" "exponent" "floor" "fraction" "huge" "iachar" "iand"
250 ;; "ibclr" "ibits" "ibset" "ichar" "ieor" "index" "int" "ior" "ishft"
251 ;; "ishftc" "kind" "lbound" "len" "len_trim" "lge" "lgt" "lle" "llt" "log"
252 ;; "logical" "log10" "matmul" "max" "maxexponent" "maxloc" "maxval" "merge"
253 ;; "min" "minexponent" "minloc" "minval" "mod" "modulo" "mvbits" "nearest"
254 ;; "nint" "not" "pack" "precision" "present" "product" "radix"
255 ;; "random_number" "random_seed" "range" "real" "repeat" "reshape"
256 ;; "rrspacing" "scale" "scan" "selected_int_kind" "selected_real_kind"
257 ;; "set_exponent" "shape" "sign" "sin" "sinh" "size" "spacing" "spread"
258 ;; "sqrt" "sum" "system_clock" "tan" "tanh" "tiny" "transfer" "transpose"
259 ;; "trim" "ubound" "unpack" "verify")
a7acbbe4 260 ;; A left parenthesis to avoid highlighting non-procedures.
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261 ;; Real is taken out here to avoid highlighting declarations.
262 (concat
263 "\\<\\(a\\(bs\\|c\\(har\\|os\\)\\|djust[lr]\\|i\\(mag\\|nt\\)\\|ll\\(\\|"
264 "ocated\\)\\|n\\(int\\|y\\)\\|s\\(in\\|sociated\\)\\|tan2?\\)\\|b\\("
265 "it_size\\|test\\)\\|c\\(eiling\\|har\\|mplx\\|o\\(njg\\|sh?\\|unt\\)\\|"
266 "shift\\)\\|d\\(ate_and_time\\|ble\\|i\\(gits\\|m\\)\\|ot_product\\|prod"
267 "\\)\\|e\\(oshift\\|psilon\\|xp\\(\\|onent\\)\\)\\|f\\(loor\\|"
268 "raction\\)\\|huge\\|i\\(a\\(char\\|nd\\)\\|b\\(clr\\|its\\|set\\)\\|"
269 "char\\|eor\\|n\\(dex\\|t\\)\\|or\\|shftc?\\)\\|kind\\|l\\(bound\\|"
270 "en\\(\\|_trim\\)\\|g[et]\\|l[et]\\|og\\(\\|10\\|ical\\)\\)\\|m\\(a\\("
271 "tmul\\|x\\(\\|exponent\\|loc\\|val\\)\\)\\|erge\\|in\\(\\|exponent\\|"
272 "loc\\|val\\)\\|od\\(\\|ulo\\)\\|vbits\\)\\|n\\(earest\\|int\\|ot\\)\\|"
273 "p\\(ack\\|r\\(e\\(cision\\|sent\\)\\|oduct\\)\\)\\|r\\(a\\(dix\\|n\\("
274 "dom_\\(number\\|seed\\)\\|ge\\)\\)\\|e\\(peat\\|shape\\)\\|rspacing\\)\\|"
275 "s\\(ca\\(le\\|n\\)\\|e\\(lected_\\(int_kind\\|real_kind\\)\\|"
276 "t_exponent\\)\\|hape\\|i\\(gn\\|nh?\\|ze\\)\\|p\\(acing\\|read\\)\\|"
277 "qrt\\|um\\|ystem_clock\\)\\|t\\(anh?\\|iny\\|r\\(ans\\(fer\\|pose\\)\\|"
278 "im\\)\\)\\|u\\(bound\\|npack\\)\\|verify\\)[ \t]*(")
279 "Regexp whose first part matches F90 intrinsic procedures.")
280
281(defconst f90-operators-re
282;; "and" "or" "not" "eqv" "neqv" "eq" "ne" "lt" "le" "gt" "ge" "true" "false"
283 (concat
284 "\\.\\(and\\|eqv?\\|false\\|g[et]\\|l[et]\\|n\\(e\\(\\|qv\\)\\|"
285 "ot\\)\\|or\\|true\\)\\.")
286 "Regexp matching intrinsic operators.")
287
288(defconst f90-hpf-keywords-re
289 ;; Intrinsic procedures
290 ;; ("all_prefix" "all_scatter" "all_suffix" "any_prefix" "any_scatter"
291 ;; "any_suffix" "copy_prefix" "copy_scatter" "copy_suffix" "count_prefix"
292 ;; "count_scatter" "count_suffix" "grade_down" "grade_up" "hpf_alignment"
293 ;; "hpf_template" "hpf_distribution" "iall" "iall_prefix" "iall_scatter"
294 ;; "iall_suffix" "iany" "iany_prefix" "iany_scatter" "iany_suffix" "iparity"
295 ;; "iparity_prefix" "iparity_scatter" "iparity_suffix" "leadz"
296 ;; "maxval_prefix" "maxval_scatter" "maxval_suffix" "minval_prefix"
297 ;; "minval_scatter" "minval_suffix" "parity" "parity_prefix"
298 ;; "parity_scatter" "parity_suffix" "popcnt" "poppar" "product_prefix"
299 ;; "product_scatter" "product_suffix" "sum_prefix" "sum_scatter"
300 ;; "sum_suffix" "ilen" "number_of_processors" "processors_shape")
301 ;; Directives
302 ;; ("align" "distribute" "dynamic" "inherit" "template" "processors"
303 ;; "realign" "redistribute" "independent")
304 ;; Keywords
305 ;; ("pure" "extrinsic" "new" "with" "onto" "block" "cyclic")
306 (concat
307 "\\<\\(a\\(l\\(ign\\|l_\\(prefix\\|s\\(catter\\|uffix\\)\\)\\)\\|ny_\\("
308 "prefix\\|s\\(catter\\|uffix\\)\\)\\)\\|block\\|c\\(o\\(py_\\(prefix\\|"
309 "s\\(catter\\|uffix\\)\\)\\|unt_\\(prefix\\|s\\(catter\\|uffix\\)\\)\\)\\|"
310 "yclic\\)\\|d\\(istribute\\|ynamic\\)\\|extrinsic\\|grade_\\(down\\|"
311 "up\\)\\|hpf_\\(alignment\\|distribution\\|template\\)\\|i\\(a\\(ll\\(\\|"
312 "_\\(prefix\\|s\\(catter\\|uffix\\)\\)\\)\\|ny\\(\\|_\\(prefix\\|s\\("
313 "catter\\|uffix\\)\\)\\)\\)\\|len\\|n\\(dependent\\|herit\\)\\|parity\\(\\|"
314 "_\\(prefix\\|s\\(catter\\|uffix\\)\\)\\)\\)\\|leadz\\|m\\(axval_\\("
315 "prefix\\|s\\(catter\\|uffix\\)\\)\\|inval_\\(prefix\\|s\\(catter\\|"
316 "uffix\\)\\)\\)\\|n\\(ew\\|umber_of_processors\\)\\|onto\\|p\\(arity\\(\\|"
317 "_\\(prefix\\|s\\(catter\\|uffix\\)\\)\\)\\|op\\(cnt\\|par\\)\\|ro\\("
318 "cessors\\(\\|_shape\\)\\|duct_\\(prefix\\|s\\(catter\\|uffix\\)\\)\\)\\|"
319 "ure\\)\\|re\\(align\\|distribute\\)\\|sum_\\(prefix\\|s\\(catter\\|"
320 "uffix\\)\\)\\|template\\|with\\)\\>")
321 "Regexp for all HPF keywords, procedures and directives.")
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322
323;; Highlighting patterns
324
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325(defvar f90-font-lock-keywords-1
326 (if (string-match "XEmacs" emacs-version)
327 (list ; XEmacs
328 '("\\<\\(end[ \t]*\\(program\\|module\\|function\\|subroutine\\|type\\)\\)\\>"
329 1 font-lock-keyword-face)
330 '("\\<\\(end[ \t]*\\(program\\|module\\|function\\|subroutine\\|type\\)\\)\\>[ \t]*\\(\\sw+\\)"
331 3 font-lock-function-name-face)
332 '("\\<\\(program\\|call\\|module\\|subroutine\\|function\\|use\\)\\>"
333 1 font-lock-keyword-face)
334 '("\\<\\(program\\|call\\|module\\|subroutine\\|function\\|use\\)\\>[ \t]*\\(\\sw+\\)"
335 2 font-lock-function-name-face nil t)
336 ;; Special highlighting of "module procedure foo-list"
337 '("\\<\\(module[ \t]*procedure\\)\\>" 1 font-lock-keyword-face t)
338 ;; Highlight definition of new type
339 '("\\<\\(type\\)[ \t]*\\(,.*::[ \t]*\\|[ \t]+\\)\\(\\sw+\\)"
340 1 font-lock-keyword-face)
341 '("\\<\\(type\\)[ \t]*\\(,.*::[ \t]*\\|[ \t]+\\)\\(\\sw+\\)"
342 3 font-lock-function-name-face)
343 "\\<\\(\\(end[ \t]*\\)?\\(interface\\|block[ \t]*data\\)\\|contains\\)\\>")
344 (list ; Emacs
345 '("\\<\\(end[ \t]*\\(program\\|module\\|function\\|subroutine\\|type\\)\\)\\>[ \t]*\\(\\sw+\\)?"
346 (1 font-lock-keyword-face) (3 font-lock-function-name-face nil t))
347 '("\\<\\(program\\|call\\|module\\|subroutine\\|function\\|use\\)\\>[ \t]*\\(\\sw+\\)?"
348 (1 font-lock-keyword-face) (2 font-lock-function-name-face nil t))
349 ;; Special highlighting of "module procedure foo-list"
350 '("\\<\\(module[ \t]*procedure\\)\\>" (1 font-lock-keyword-face t))
351 ;; Highlight definition of new type
352 '("\\<\\(type\\)[ \t]*\\(,.*::[ \t]*\\|[ \t]+\\)\\(\\sw+\\)"
353 (1 font-lock-keyword-face) (3 font-lock-function-name-face))
354 "\\<\\(\\(end[ \t]*\\)?\\(interface\\|block[ \t]*data\\)\\|contains\\)\\>"))
355 "This does fairly subdued highlighting of comments and function calls.")
356
357(defvar f90-font-lock-keywords-2
358 (append f90-font-lock-keywords-1
359 (if (string-match "XEmacs" emacs-version)
360 (list ; XEmacs
361 ;; Variable declarations (avoid the real function call)
362 '("^[ \t0-9]*\\(real\\|integer\\|c\\(haracter\\|omplex\\)\\|logical\\|type[ \t]*(\\sw+)\\)"
363 1 font-lock-type-face)
364 '("^[ \t0-9]*\\(real\\|integer\\|c\\(haracter\\|omplex\\)\\|logical\\|type[ \t]*(\\sw+)\\)\\(.*::\\|[ \t]*(.*)\\)?\\(.*\\)"
365 4 font-lock-doc-string-face)
366 ;; do, if and select constructs
367 '("\\<\\(end[ \t]*\\(do\\|if\\|select\\)\\)\\>"
368 1 font-lock-keyword-face)
369 '("\\<\\(end[ \t]*\\(do\\|if\\|select\\)\\)\\>\\([ \t]+\\(\\sw+\\)\\)"
370 3 font-lock-doc-string-face)
371 '("^[ \t0-9]*\\(\\(\\sw+\\)[ \t]*:[ \t]*\\)\\(\\(if\\|do\\([ \t]*while\\)?\\|select[ \t]*case\\)\\)\\>"
372 2 font-lock-doc-string-face)
373 '("^[ \t0-9]*\\(\\(\\sw+\\)[ \t]*:[ \t]*\\)?\\(\\(if\\|do\\([ \t]*while\\)?\\|select[ \t]*case\\)\\)\\>"
374 3 font-lock-keyword-face)
375 ;; implicit declaration
376 '("\\<\\(implicit\\)[ \t]*\\(real\\|integer\\|c\\(haracter\\|omplex\\)\\|logical\\|type[ \t]*(\\sw+)\\|none\\)\\>"
377 1 font-lock-keyword-face)
378 '("\\<\\(implicit\\)[ \t]*\\(real\\|integer\\|c\\(haracter\\|omplex\\)\\|logical\\|type[ \t]*(\\sw+)\\|none\\)\\>"
379 2 font-lock-type-face)
380 '("\\<\\(namelist\\|common\\)[ \t]*\/\\(\\sw+\\)?\/"
381 1 font-lock-keyword-face)
382 '("\\<\\(namelist\\|common\\)[ \t]*\/\\(\\sw+\\)\/"
383 2 font-lock-doc-string-face nil t)
384 '("\\<\\(where\\|forall\\)[ \t]*(" . 1)
385 "\\<e\\(lse\\([ \t]*if\\|where\\)?\\|nd[ \t]*\\(where\\|forall\\)\\)\\>"
386 "\\<\\(then\\|continue\\|format\\|include\\|stop\\|return\\)\\>"
387 '("\\<\\(exit\\|cycle\\)\\>"
388 1 font-lock-keyword-face)
389 '("\\<\\(exit\\|cycle\\)[ \t]*\\(\\sw+\\)2\\>"
390 2 font-lock-doc-string-face)
c80718cc 391 '("\\<\\(case\\)[ \t]*\\(default\\|(\\)" . 1)
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392 '("\\<\\(do\\|go *to\\)\\>[ \t]*\\([0-9]+\\)"
393 1 font-lock-keyword-face)
394 '("\\<\\(do\\|go *to\\)\\>[ \t]*\\([0-9]+\\)"
395 2 font-lock-doc-string-face)
396 '("^[ \t]*\\([0-9]+\\)" 1 font-lock-doc-string-face t))
397 (list ; Emacs
398 ;; Variable declarations (avoid the real function call)
399 '("^[ \t0-9]*\\(real\\|integer\\|c\\(haracter\\|omplex\\)\\|logical\\|type[ \t]*(\\sw+)\\)\\(.*::\\|[ \t]*(.*)\\)?\\(.*\\)"
400 (1 font-lock-type-face) (4 font-lock-variable-name-face))
401 ;; do, if and select constructs
402 '("\\<\\(end[ \t]*\\(do\\|if\\|select\\)\\)\\>\\([ \t]+\\(\\sw+\\)\\)?"
403 (1 font-lock-keyword-face) (3 font-lock-reference-face nil t))
404 '("^[ \t0-9]*\\(\\(\\sw+\\)[ \t]*:[ \t]*\\)?\\(\\(if\\|do\\([ \t]*while\\)?\\|select[ \t]*case\\)\\)\\>"
405 (2 font-lock-reference-face nil t) (3 font-lock-keyword-face))
406 ;; implicit declaration
407 '("\\<\\(implicit\\)[ \t]*\\(real\\|integer\\|c\\(haracter\\|omplex\\)\\|logical\\|type[ \t]*(\\sw+)\\|none\\)\\>" (1 font-lock-keyword-face) (2 font-lock-type-face))
408 '("\\<\\(namelist\\|common\\)[ \t]*\/\\(\\sw+\\)?\/" (1 font-lock-keyword-face) (2 font-lock-reference-face nil t))
409 '("\\<\\(where\\|forall\\)[ \t]*(" . 1)
410 "\\<e\\(lse\\([ \t]*if\\|where\\)?\\|nd[ \t]*\\(where\\|forall\\)\\)\\>"
411 "\\<\\(then\\|continue\\|format\\|include\\|stop\\|return\\)\\>"
412 '("\\<\\(exit\\|cycle\\)[ \t]*\\(\\sw+\\)?\\>"
413 (1 font-lock-keyword-face) (2 font-lock-reference-face nil t))
c80718cc 414 '("\\<\\(case\\)[ \t]*\\(default\\|(\\)" . 1)
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415 '("\\<\\(do\\|go *to\\)\\>[ \t]*\\([0-9]+\\)"
416 (1 font-lock-keyword-face) (2 font-lock-reference-face))
417 '("^[ \t]*\\([0-9]+\\)" (1 font-lock-reference-face t)))))
418 "Highlights declarations, do-loops and other constructions")
419
420(defvar f90-font-lock-keywords-3
421 (append f90-font-lock-keywords-2
034a9d40 422 (list
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423 f90-keywords-level-3-re
424 f90-operators-re
425 (if (string-match "XEmacs" emacs-version)
426 (append (list f90-procedures-re) '(1 font-lock-keyword-face t))
427 (list f90-procedures-re '(1 font-lock-keyword-face t)))
428 "\\<real\\>" ; Avoid overwriting real defs.
429 ))
430 "Highlights all F90 keywords and intrinsic procedures.")
431
432(defvar f90-font-lock-keywords-4
433 (append f90-font-lock-keywords-3
434 (list f90-hpf-keywords-re))
435 "Highlights all F90 and HPF keywords.")
436
437(defvar f90-font-lock-keywords
438 f90-font-lock-keywords-2
439 "*Default expressions to highlight in F90 mode.")
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440
441;; syntax table
442(defvar f90-mode-syntax-table nil
443 "Syntax table in use in F90 mode buffers.")
444
445(if f90-mode-syntax-table
446 ()
447 (setq f90-mode-syntax-table (make-syntax-table))
448 (modify-syntax-entry ?\! "<" f90-mode-syntax-table) ; beg. comment
449 (modify-syntax-entry ?\n ">" f90-mode-syntax-table) ; end comment
450 (modify-syntax-entry ?_ "w" f90-mode-syntax-table) ; underscore in names
451 (modify-syntax-entry ?\' "\"" f90-mode-syntax-table) ; string quote
452 (modify-syntax-entry ?\" "\"" f90-mode-syntax-table) ; string quote
453 (modify-syntax-entry ?\` "w" f90-mode-syntax-table) ; for abbrevs
454 (modify-syntax-entry ?\r " " f90-mode-syntax-table) ; return is whitespace
455 (modify-syntax-entry ?+ "." f90-mode-syntax-table)
456 (modify-syntax-entry ?- "." f90-mode-syntax-table)
457 (modify-syntax-entry ?= "." f90-mode-syntax-table)
458 (modify-syntax-entry ?* "." f90-mode-syntax-table)
459 (modify-syntax-entry ?/ "." f90-mode-syntax-table)
460 (modify-syntax-entry ?\\ "/" f90-mode-syntax-table)) ; escape chars
461
462;; keys
463(defvar f90-mode-map ()
464 "Keymap used in F90 mode.")
ee30478d 465
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466(if f90-mode-map
467 ()
468 (setq f90-mode-map (make-sparse-keymap))
469 (define-key f90-mode-map "`" 'f90-abbrev-start)
470 (define-key f90-mode-map "\C-c;" 'f90-comment-region)
471 (define-key f90-mode-map "\C-\M-a" 'f90-beginning-of-subprogram)
472 (define-key f90-mode-map "\C-\M-e" 'f90-end-of-subprogram)
473 (define-key f90-mode-map "\C-\M-h" 'f90-mark-subprogram)
474 (define-key f90-mode-map "\C-\M-q" 'f90-indent-subprogram)
475 (define-key f90-mode-map "\C-j" 'f90-indent-new-line) ; LFD equals C-j
476 (define-key f90-mode-map "\r" 'newline)
477 (define-key f90-mode-map "\C-c\r" 'f90-break-line)
478 ;; (define-key f90-mode-map [M-return] 'f90-break-line)
479 (define-key f90-mode-map "\C-c\C-d" 'f90-join-lines)
480 (define-key f90-mode-map "\C-c\C-f" 'f90-fill-region)
481 (define-key f90-mode-map "\C-c\C-p" 'f90-previous-statement)
482 (define-key f90-mode-map "\C-c\C-n" 'f90-next-statement)
483 (define-key f90-mode-map "\C-c\C-w" 'f90-insert-end)
484 (define-key f90-mode-map "\t" 'f90-indent-line))
ee30478d 485
034a9d40 486;; menus
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487(if (string-match "XEmacs" emacs-version)
488 (defvar f90-xemacs-menu
489 '("F90"
490 ["Indent Subprogram" f90-indent-subprogram t]
491 ["Mark Subprogram" f90-mark-subprogram t]
492 ["Beginning of Subprogram" f90-beginning-of-subprogram t]
493 ["End of Subprogram" f90-end-of-subprogram t]
494 "-----"
495 ["(Un)Comment Region" f90-comment-region t]
496 ["Indent Region" indent-region t]
497 ["Fill Region" f90-fill-region t]
498 "-----"
499 ["Break Line at Point" f90-break-line t]
500 ["Join with Next Line" f90-join-lines t]
501 ["Insert Newline" newline t]
502 ["Insert End" f90-insert-end t]
503 "-----"
504 ["Upcase Keywords (buffer)" f90-upcase-keywords t]
505 ["Upcase Keywords (region)" f90-upcase-region-keywords
506 t]
507 ["Capitalize Keywords (buffer)" f90-capitalize-keywords t]
508 ["Capitalize Keywords (region)"
509 f90-capitalize-region-keywords t]
510 ["Downcase Keywords (buffer)" f90-downcase-keywords t]
511 ["Downcase Keywords (region)"
512 f90-downcase-region-keywords t]
513 "-----"
514 ["Toggle abbrev-mode" abbrev-mode t]
515 ["Toggle auto-fill" f90-auto-fill-mode t])
516 "XEmacs menu for F90 mode.")
db97b872 517 ;; Emacs
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518 (define-key f90-mode-map [menu-bar] (make-sparse-keymap))
519 (define-key f90-mode-map [menu-bar f90]
520 (cons "F90" (make-sparse-keymap "f90")))
521 (define-key f90-mode-map [menu-bar f90 abbrev-mode]
522 '("Toggle abbrev-mode" . abbrev-mode))
523 (define-key f90-mode-map [menu-bar f90 f90-auto-fill-mode]
524 '("Toggle auto-fill" . f90-auto-fill-mode))
525 (define-key f90-mode-map [menu-bar f90 f90-downcase-region-keywords]
658e4ee5 526 '("Downcase Keywords (region)" . f90-downcase-region-keywords))
034a9d40 527 (define-key f90-mode-map [menu-bar f90 f90-downcase-keywords]
658e4ee5 528 '("Downcase Keywords (buffer)" . f90-downcase-keywords))
034a9d40 529 (define-key f90-mode-map [menu-bar f90 f90-capitalize-keywords]
658e4ee5 530 '("Capitalize Keywords (region)" . f90-capitalize-region-keywords))
034a9d40 531 (define-key f90-mode-map [menu-bar f90 f90-capitalize-region-keywords]
658e4ee5 532 '("Capitalize Keywords (buffer)" . f90-capitalize-keywords))
034a9d40 533 (define-key f90-mode-map [menu-bar f90 f90-upcase-region-keywords]
ee30478d 534 '("Upcase Keywords (region)" . f90-upcase-region-keywords))
034a9d40 535 (define-key f90-mode-map [menu-bar f90 f90-upcase-keywords]
ee30478d 536 '("Upcase Keywords (buffer)" . f90-upcase-keywords))
034a9d40 537 (define-key f90-mode-map [menu-bar f90 f90-insert-end]
658e4ee5 538 '("Insert end" . f90-insert-end))
034a9d40 539 (define-key f90-mode-map [menu-bar f90 f90-join-lines]
658e4ee5 540 '("Join with Next Line" . f90-join-lines))
034a9d40 541 (define-key f90-mode-map [menu-bar f90 f90-break-line]
658e4ee5 542 '("Break Line at Point" . f90-break-line))
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543 (define-key f90-mode-map [menu-bar f90 f90-fill-region]
544 '("Fill Region" . f90-fill-region))
545 (define-key f90-mode-map [menu-bar f90 indent-region]
546 '("Indent Region" . indent-region))
547 (define-key f90-mode-map [menu-bar f90 f90-comment-region]
548 '("(Un)Comment Region" . f90-comment-region))
549 (define-key f90-mode-map [menu-bar f90 f90-end-of-subprogram]
550 '("End of Subprogram" . f90-end-of-subprogram))
551 (define-key f90-mode-map [menu-bar f90 f90-beginning-of-subprogram]
552 '("Beginning of Subprogram" . f90-beginning-of-subprogram))
553 (define-key f90-mode-map [menu-bar f90 f90-mark-subprogram]
554 '("Mark Subprogram" . f90-mark-subprogram))
555 (define-key f90-mode-map [menu-bar f90 f90-indent-subprogram]
556 '("Indent Subprogram" . f90-indent-subprogram)))
557
ee30478d 558;; Regexps for finding program structures.
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559(defconst f90-blocks-re
560 "\\(block[ \t]*data\\|do\\|if\\|interface\\|function\\|module\\|\
561program\\|select\\|subroutine\\|type\\|where\\|forall\\)\\>")
562(defconst f90-program-block-re
563 "\\(program\\|module\\|subroutine\\|function\\)")
564(defconst f90-else-like-re
c80718cc 565 "\\(else\\([ \t]*if\\|where\\)?\\|case[ \t]*\\(default\\|(\\)\\)")
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566(defconst f90-end-if-re
567 "end[ \t]*\\(if\\|select\\|where\\|forall\\)\\>")
568(defconst f90-end-type-re
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569 "end[ \t]*\\(type\\|interface\\|block[ \t]*data\\)")
570(defconst f90-type-def-re
571 "\\<\\(type\\)[ \t]*\\(,.*::[ \t]*\\|[ \t]+\\)\\(\\sw+\\)")
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572(defconst f90-no-break-re "\\(\\*\\*\\|//\\|=>\\)")
573;; A temporary position to make region operators faster
574(defvar f90-cache-position nil)
575(make-variable-buffer-local 'f90-cache-position)
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576
577;; Imenu support
578(defvar f90-imenu-generic-expression
579 (cons
580 (concat
581 "^[ \t0-9]*\\("
582 "program[ \t]+\\(\\sw+\\)\\|"
583 "module[ \t]+\\(\\sw+\\)[ \t]*\\(!\\|$\\)\\|"
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584 "\\(pure\\|recursive\\|extrinsic([^)]+)\\)?[ \t]*"
585 "subroutine[ \t]+\\(\\sw+\\)\\|"
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586 ; avoid end function, but allow for most other things
587 "\\([^!]*\\([^e!].[^ \t!]\\|.[^n!][^ \t!]\\|..[^d \t!]\\)"
588 "\\|[^!]?[^!]?\\)[ \t]*function[ \t]+\\(\\sw+\\)"
589 "\\)")
590 (list 2 3 6 9))
591 "imenu generic expression for F90 mode.")
592
593;; When compiling under GNU Emacs, load imenu during compilation. If
594;; you have 19.22 or earlier, comment this out, or get imenu.
595(and (fboundp 'eval-when-compile)
596 (eval-when-compile
597 (if (not (string-match "XEmacs" emacs-version))
598 (require 'imenu))
599 ()))
600
601
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602\f
603;; abbrevs have generally two letters, except standard types `c, `i, `r, `t
604(defvar f90-mode-abbrev-table nil)
605(if f90-mode-abbrev-table
606 ()
607 (let ((ac abbrevs-changed))
608 (define-abbrev-table 'f90-mode-abbrev-table ())
609 (define-abbrev f90-mode-abbrev-table "`al" "allocate" nil)
ee30478d 610 (define-abbrev f90-mode-abbrev-table "`ab" "allocatable" nil)
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611 (define-abbrev f90-mode-abbrev-table "`as" "assignment" nil)
612 (define-abbrev f90-mode-abbrev-table "`ba" "backspace" nil)
613 (define-abbrev f90-mode-abbrev-table "`bd" "block data" nil)
614 (define-abbrev f90-mode-abbrev-table "`c" "character" nil)
615 (define-abbrev f90-mode-abbrev-table "`cl" "close" nil)
616 (define-abbrev f90-mode-abbrev-table "`cm" "common" nil)
617 (define-abbrev f90-mode-abbrev-table "`cx" "complex" nil)
618 (define-abbrev f90-mode-abbrev-table "`cn" "contains" nil)
619 (define-abbrev f90-mode-abbrev-table "`cy" "cycle" nil)
620 (define-abbrev f90-mode-abbrev-table "`de" "deallocate" nil)
621 (define-abbrev f90-mode-abbrev-table "`df" "define" nil)
622 (define-abbrev f90-mode-abbrev-table "`di" "dimension" nil)
623 (define-abbrev f90-mode-abbrev-table "`dw" "do while" nil)
624 (define-abbrev f90-mode-abbrev-table "`el" "else" nil)
625 (define-abbrev f90-mode-abbrev-table "`eli" "else if" nil)
626 (define-abbrev f90-mode-abbrev-table "`elw" "elsewhere" nil)
627 (define-abbrev f90-mode-abbrev-table "`eq" "equivalence" nil)
628 (define-abbrev f90-mode-abbrev-table "`ex" "external" nil)
629 (define-abbrev f90-mode-abbrev-table "`ey" "entry" nil)
630 (define-abbrev f90-mode-abbrev-table "`fl" "forall" nil)
631 (define-abbrev f90-mode-abbrev-table "`fo" "format" nil)
632 (define-abbrev f90-mode-abbrev-table "`fu" "function" nil)
633 (define-abbrev f90-mode-abbrev-table "`fa" ".false." nil)
634 (define-abbrev f90-mode-abbrev-table "`im" "implicit none" nil)
635 (define-abbrev f90-mode-abbrev-table "`in " "include" nil)
636 (define-abbrev f90-mode-abbrev-table "`i" "integer" nil)
637 (define-abbrev f90-mode-abbrev-table "`it" "intent" nil)
638 (define-abbrev f90-mode-abbrev-table "`if" "interface" nil)
639 (define-abbrev f90-mode-abbrev-table "`lo" "logical" nil)
640 (define-abbrev f90-mode-abbrev-table "`mo" "module" nil)
641 (define-abbrev f90-mode-abbrev-table "`na" "namelist" nil)
642 (define-abbrev f90-mode-abbrev-table "`nu" "nullify" nil)
643 (define-abbrev f90-mode-abbrev-table "`op" "optional" nil)
644 (define-abbrev f90-mode-abbrev-table "`pa" "parameter" nil)
645 (define-abbrev f90-mode-abbrev-table "`po" "pointer" nil)
646 (define-abbrev f90-mode-abbrev-table "`pr" "print" nil)
647 (define-abbrev f90-mode-abbrev-table "`pi" "private" nil)
648 (define-abbrev f90-mode-abbrev-table "`pm" "program" nil)
649 (define-abbrev f90-mode-abbrev-table "`pu" "public" nil)
650 (define-abbrev f90-mode-abbrev-table "`r" "real" nil)
651 (define-abbrev f90-mode-abbrev-table "`rc" "recursive" nil)
652 (define-abbrev f90-mode-abbrev-table "`rt" "return" nil)
653 (define-abbrev f90-mode-abbrev-table "`rw" "rewind" nil)
654 (define-abbrev f90-mode-abbrev-table "`se" "select" nil)
655 (define-abbrev f90-mode-abbrev-table "`sq" "sequence" nil)
656 (define-abbrev f90-mode-abbrev-table "`su" "subroutine" nil)
657 (define-abbrev f90-mode-abbrev-table "`ta" "target" nil)
658 (define-abbrev f90-mode-abbrev-table "`tr" ".true." nil)
659 (define-abbrev f90-mode-abbrev-table "`t" "type" nil)
660 (define-abbrev f90-mode-abbrev-table "`wh" "where" nil)
661 (define-abbrev f90-mode-abbrev-table "`wr" "write" nil)
662 (setq abbrevs-changed ac)))
663\f
664;;;###autoload
665(defun f90-mode ()
666 "Major mode for editing Fortran 90 code in free format.
667
668\\[f90-indent-new-line] corrects current indentation and creates new\
669 indented line.
670\\[f90-indent-line] indents the current line correctly.
671\\[f90-indent-subprogram] indents the current subprogram.
672
673Type `? or `\\[help-command] to display a list of built-in\
674 abbrevs for F90 keywords.
675
676Key definitions:
677\\{f90-mode-map}
678
679Variables controlling indentation style and extra features:
680
681 f90-do-indent
682 Extra indentation within do blocks. (default 3)
683 f90-if-indent
684 Extra indentation within if/select case/where/forall blocks. (default 3)
685 f90-type-indent
686 Extra indentation within type/interface/block-data blocks. (default 3)
687 f90-program-indent
688 Extra indentation within program/module/subroutine/function blocks.
689 (default 2)
690 f90-continuation-indent
691 Extra indentation applied to continuation lines. (default 5)
692 f90-comment-region
693 String inserted by \\[f90-comment-region] at start of each line in
694 region. (default \"!!!$\")
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695 f90-indented-comment-re
696 Regexp determining the type of comment to be intended like code.
697 (default \"!\")
698 f90-directive-comment-re
699 Regexp of comment-like directive like \"!HPF\\\\$\", not to be indented.
700 (default \"!hpf\\\\$\")
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701 f90-break-delimiters
702 Regexp holding list of delimiters at which lines may be broken.
703 (default \"[-+*/><=,% \\t]\")
704 f90-break-before-delimiters
705 Non-nil causes `f90-do-auto-fill' to break lines before delimiters.
706 (default t)
707 f90-beginning-ampersand
708 Automatic insertion of \& at beginning of continuation lines. (default t)
709 f90-smart-end
710 From an END statement, check and fill the end using matching block start.
711 Allowed values are 'blink, 'no-blink, and nil, which determine
712 whether to blink the matching beginning.) (default 'blink)
713 f90-auto-keyword-case
714 Automatic change of case of keywords. (default nil)
715 The possibilities are 'downcase-word, 'upcase-word, 'capitalize-word.
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716 f90-leave-line-no
717 Do not left-justify line numbers. (default nil)
718 f90-startup-message
719 Set to nil to inhibit message first time F90 mode is used. (default t)
f885e95c 720 f90-keywords-re
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721 List of keywords used for highlighting/upcase-keywords etc.
722
723Turning on F90 mode calls the value of the variable `f90-mode-hook'
724with no args, if that value is non-nil."
725 (interactive)
726 (kill-all-local-variables)
727 (setq major-mode 'f90-mode)
728 (setq mode-name "F90")
729 (setq local-abbrev-table f90-mode-abbrev-table)
730 (set-syntax-table f90-mode-syntax-table)
731 (use-local-map f90-mode-map)
732 (make-local-variable 'indent-line-function)
733 (setq indent-line-function 'f90-indent-line)
734 (make-local-variable 'indent-region-function)
735 (setq indent-region-function 'f90-indent-region)
736 (make-local-variable 'require-final-newline)
737 (setq require-final-newline t)
738 (make-local-variable 'comment-start)
739 (setq comment-start "!")
740 (make-local-variable 'comment-start-skip)
741 (setq comment-start-skip "!+ *")
742 (make-local-variable 'comment-indent-function)
743 (setq comment-indent-function 'f90-comment-indent)
744 (make-local-variable 'abbrev-all-caps)
745 (setq abbrev-all-caps t)
72e80cad 746 (setq indent-tabs-mode nil)
034a9d40 747 ;; Setting up things for font-lock
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748 (if (string-match "Xemacs" emacs-version)
749 (progn
750 (put 'f90-mode 'font-lock-keywords-case-fold-search t)
751 (if (and current-menubar
752 (not (assoc "F90" current-menubar)))
753 (progn
754 (set-buffer-menubar (copy-sequence current-menubar))
755 (add-submenu nil f90-xemacs-menu)))
756 (make-local-variable 'font-lock-keywords)
757 (setq font-lock-keywords f90-font-lock-keywords))
758 ;; Emacs
759 (make-local-variable 'font-lock-defaults)
760 (setq font-lock-defaults
761 '((f90-font-lock-keywords f90-font-lock-keywords-1
762 f90-font-lock-keywords-2
763 f90-font-lock-keywords-3
764 f90-font-lock-keywords-4)
765 nil t))
766 ;; Tell imenu how to handle f90.
767 (make-local-variable 'imenu-generic-expression)
768 (setq imenu-generic-expression f90-imenu-generic-expression))
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769 (run-hooks 'f90-mode-hook)
770 (if f90-startup-message
c04f7d65 771 (message "Emacs F90 mode; please report bugs to %s" bug-f90-mode))
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772 (setq f90-startup-message nil))
773\f
774;; inline-functions
775(defsubst f90-get-beg-of-line ()
776 (save-excursion (beginning-of-line) (point)))
777
778(defsubst f90-get-end-of-line ()
779 (save-excursion (end-of-line) (point)))
780
781(defsubst f90-in-string ()
782 (let ((beg-pnt
783 (if (and f90-cache-position (> (point) f90-cache-position))
784 f90-cache-position
785 (point-min))))
786 (nth 3 (parse-partial-sexp beg-pnt (point)))))
787
788(defsubst f90-in-comment ()
789 (let ((beg-pnt
790 (if (and f90-cache-position (> (point) f90-cache-position))
791 f90-cache-position
792 (point-min))))
793 (nth 4 (parse-partial-sexp beg-pnt (point)))))
794
795(defsubst f90-line-continued ()
796 (save-excursion
797 (let ((bol (f90-get-beg-of-line)))
798 (end-of-line)
799 (while (f90-in-comment)
800 (search-backward "!" bol)
801 (skip-chars-backward "!"))
802 (skip-chars-backward " \t")
803 (= (preceding-char) ?&))))
804
805(defsubst f90-current-indentation ()
806 "Return indentation of current line.
807Line-numbers are considered whitespace characters."
808 (save-excursion
809 (beginning-of-line) (skip-chars-forward " \t0-9")
810 (current-column)))
811
812(defsubst f90-indent-to (col &optional no-line-number)
813 "Indent current line to column COL.
814If no-line-number nil, jump over a possible line-number."
815 (beginning-of-line)
816 (if (not no-line-number)
817 (skip-chars-forward " \t0-9"))
818 (delete-horizontal-space)
819 (if (zerop (current-column))
820 (indent-to col)
821 (indent-to col 1)))
822
823(defsubst f90-match-piece (arg)
824 (if (match-beginning arg)
825 (buffer-substring (match-beginning arg) (match-end arg))))
826
827(defsubst f90-get-present-comment-type ()
828 (save-excursion
829 (let ((type nil) (eol (f90-get-end-of-line)))
830 (if (f90-in-comment)
831 (progn
832 (beginning-of-line)
833 (re-search-forward "[!]+" eol)
834 (while (f90-in-string)
835 (re-search-forward "[!]+" eol))
836 (setq type (buffer-substring (match-beginning 0) (match-end 0)))))
837 type)))
838
839(defsubst f90-equal-symbols (a b)
840 "Compare strings neglecting case and allowing for nil value."
841 (let ((a-local (if a (downcase a) nil))
842 (b-local (if b (downcase b) nil)))
843 (equal a-local b-local)))
844
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845;; XEmacs 19.11 & 19.12 gives back a single char when matching an empty regular
846;; expression. Therefore, the next 2 functions are longer than necessary.
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847
848(defsubst f90-looking-at-do ()
849 "Return (\"do\" name) if a do statement starts after point.
850Name is nil if the statement has no label."
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851 (if (looking-at "\\(\\(\\sw+\\)[ \t]*\:\\)?[ \t]*\\(do\\)\\>")
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))))
857
858(defsubst f90-looking-at-select-case ()
859 "Return (\"select\" name) if a select-case statement starts after point.
860Name is nil if the statement has no label."
861 (if (looking-at "\\(\\(\\sw+\\)[ \t]*\:\\)?[ \t]*\\(select\\)[ \t]*case[ \t]*(")
862 (let (label
863 (struct (f90-match-piece 3)))
864 (if (looking-at "\\(\\sw+\\)[ \t]*\:")
865 (setq label (f90-match-piece 1)))
866 (list struct label))))
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867
868(defsubst f90-looking-at-if-then ()
869 "Return (\"if\" name) if an if () then statement starts after point.
870Name is nil if the statement has no label."
871 (save-excursion
872 (let (struct (label nil))
ee30478d 873 (if (looking-at "\\(\\(\\sw+\\)[ \t]*\:\\)?[ \t]*\\(if\\)\\>")
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874 (progn
875 (setq struct (f90-match-piece 3))
ee30478d 876 (if (looking-at "\\(\\sw+\\)[ \t]*\:")
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877 (setq label (f90-match-piece 1)))
878 (goto-char (scan-lists (point) 1 0))
879 (skip-chars-forward " \t")
ee30478d 880 (if (or (looking-at "then\\>")
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881 (if (f90-line-continued)
882 (progn
883 (f90-next-statement)
884 (skip-chars-forward " \t0-9&")
ee30478d 885 (looking-at "then\\>"))))
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886 (list struct label)))))))
887
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888(defsubst f90-looking-at-where-or-forall ()
889 "Return (kind nil) if where/forall...end starts after point."
890 (save-excursion
891 (let (command)
892 (if (looking-at "\\(where\\|forall\\)[ \t]*(")
893 (progn
894 (setq command (list (f90-match-piece 1) nil))
895 (goto-char (scan-lists (point) 1 0))
896 (skip-chars-forward " \t")
897 (if (looking-at "\\(!\\|$\\)")
898 command))))))
899
900(defsubst f90-looking-at-type-like ()
901 "Return (kind name) at the start of a type/interface/block-data block.
902Name is non-nil only for type."
903 (cond
ee30478d 904 ((looking-at f90-type-def-re)
72e80cad 905 (list (f90-match-piece 1) (f90-match-piece 3)))
ee30478d 906 ((looking-at "\\(interface\\|block[\t]*data\\)\\>")
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907 (list (f90-match-piece 1) nil))))
908
909(defsubst f90-looking-at-program-block-start ()
910 "Return (kind name) if a program block with name name starts after point."
911 (cond
ee30478d 912 ((looking-at "\\(program\\)[ \t]+\\(\\sw+\\)\\>")
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913 (list (f90-match-piece 1) (f90-match-piece 2)))
914 ((and (not (looking-at "module[ \t]*procedure\\>"))
ee30478d 915 (looking-at "\\(module\\)[ \t]+\\(\\sw+\\)\\>"))
034a9d40 916 (list (f90-match-piece 1) (f90-match-piece 2)))
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917 ((looking-at (concat
918 "\\(pure\\|recursive\\|extrinsic([^)]+)\\)?[ \t]*"
919 "\\(subroutine\\)[ \t]+\\(\\sw+\\)"))
034a9d40 920 (list (f90-match-piece 2) (f90-match-piece 3)))
ee30478d 921 ((and (not (looking-at "end[ \t]*function"))
c80718cc 922 (looking-at "[^!\"\&\\n]*\\(function\\)[ \t]+\\(\\sw+\\)"))
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923 (list (f90-match-piece 1) (f90-match-piece 2)))))
924
925(defsubst f90-looking-at-program-block-end ()
926 "Return list of type and name of end of block."
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927 (if (looking-at (concat "end[ \t]*" f90-blocks-re
928 "?\\([ \t]+\\(\\sw+\\)\\)?\\>"))
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929 (list (f90-match-piece 1) (f90-match-piece 3))))
930
931(defsubst f90-comment-indent ()
932 (cond ((looking-at "!!!") 0)
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933 ((and f90-directive-comment-re
934 (looking-at f90-directive-comment-re)) 0)
034a9d40 935 ((looking-at (regexp-quote f90-comment-region)) 0)
ee30478d 936 ((looking-at f90-indented-comment-re)
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937 (f90-calculate-indent))
938 (t (skip-chars-backward " \t")
939 (max (if (bolp) 0 (1+ (current-column))) comment-column))))
940
941(defsubst f90-present-statement-cont ()
942 "Return continuation properties of present statement."
943 (let (pcont cont)
944 (save-excursion
945 (setq pcont (if (f90-previous-statement) (f90-line-continued) nil)))
946 (setq cont (f90-line-continued))
947 (cond ((and (not pcont) (not cont)) 'single)
948 ((and (not pcont) cont) 'begin)
949 ((and pcont (not cont)) 'end)
950 ((and pcont cont) 'middle)
951 (t (error)))))
952
953(defsubst f90-indent-line-no ()
954 (if f90-leave-line-no
955 ()
956 (if (and (not (zerop (skip-chars-forward " \t")))
957 (looking-at "[0-9]"))
958 (delete-horizontal-space)))
959 (skip-chars-forward " \t0-9"))
960
961(defsubst f90-no-block-limit ()
962 (let ((eol (f90-get-end-of-line)))
963 (save-excursion
964 (not (or (looking-at "end")
965 (looking-at "\\(do\\|if\\|else\\|select[ \t]*case\\|\
966case\\|where\\|forall\\)\\>")
967 (looking-at "\\(program\\|module\\|interface\\|\
968block[ \t]*data\\)\\>")
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969 (looking-at "\\(contains\\|\\sw+[ \t]*:\\)")
970 (looking-at f90-type-def-re)
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971 (re-search-forward "\\(function\\|subroutine\\)" eol t))))))
972
973(defsubst f90-update-line ()
974 (let (bol eol)
ee30478d 975 (if f90-auto-keyword-case
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976 (progn (setq bol (f90-get-beg-of-line)
977 eol (f90-get-end-of-line))
978 (if f90-auto-keyword-case
4337739c 979 (f90-change-keywords f90-auto-keyword-case bol eol))))))
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980\f
981(defun f90-get-correct-indent ()
982 "Get correct indent for a line starting with line number.
983Does not check type and subprogram indentation."
984 (let ((epnt (f90-get-end-of-line)) icol cont)
985 (save-excursion
986 (while (and (f90-previous-statement)
987 (or (progn
988 (setq cont (f90-present-statement-cont))
989 (or (eq cont 'end) (eq cont 'middle)))
990 (looking-at "[ \t]*[0-9]"))))
991 (setq icol (current-indentation))
992 (beginning-of-line)
993 (if (re-search-forward "\\(if\\|do\\|select\\|where\\|forall\\)"
994 (f90-get-end-of-line) t)
995 (progn
996 (beginning-of-line) (skip-chars-forward " \t")
997 (cond ((f90-looking-at-do)
998 (setq icol (+ icol f90-do-indent)))
999 ((or (f90-looking-at-if-then)
1000 (f90-looking-at-where-or-forall)
1001 (f90-looking-at-select-case))
1002 (setq icol (+ icol f90-if-indent))))
1003 (end-of-line)))
1004 (while (re-search-forward
ee30478d 1005 "\\(if\\|do\\|select\\|where\\|forall\\)" epnt t)
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1006 (beginning-of-line) (skip-chars-forward " \t0-9")
1007 (cond ((f90-looking-at-do)
1008 (setq icol (+ icol f90-do-indent)))
1009 ((or (f90-looking-at-if-then)
1010 (f90-looking-at-where-or-forall)
1011 (f90-looking-at-select-case))
1012 (setq icol (+ icol f90-if-indent)))
1013 ((looking-at f90-end-if-re)
1014 (setq icol (- icol f90-if-indent)))
ee30478d 1015 ((looking-at "end[ \t]*do\\>")
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1016 (setq icol (- icol f90-do-indent))))
1017 (end-of-line))
1018 icol)))
1019
1020
1021(defun f90-calculate-indent ()
1022 "Calculate the indent column based on previous statements."
1023 (interactive)
1024 (let (icol cont (case-fold-search t) (pnt (point)))
1025 (save-excursion
1026 (if (not (f90-previous-statement))
1027 (setq icol 0)
1028 (setq cont (f90-present-statement-cont))
1029 (if (eq cont 'end)
1030 (while (not (eq 'begin (f90-present-statement-cont)))
1031 (f90-previous-statement)))
1032 (cond ((eq cont 'begin)
1033 (setq icol (+ (f90-current-indentation)
1034 f90-continuation-indent)))
1035 ((eq cont 'middle) (setq icol(current-indentation)))
1036 (t (setq icol (f90-current-indentation))
1037 (skip-chars-forward " \t")
1038 (if (looking-at "[0-9]")
1039 (setq icol (f90-get-correct-indent))
1040 (cond ((or (f90-looking-at-if-then)
1041 (f90-looking-at-where-or-forall)
1042 (f90-looking-at-select-case)
1043 (looking-at f90-else-like-re))
1044 (setq icol (+ icol f90-if-indent)))
1045 ((f90-looking-at-do)
1046 (setq icol (+ icol f90-do-indent)))
1047 ((f90-looking-at-type-like)
1048 (setq icol (+ icol f90-type-indent)))
1049 ((or (f90-looking-at-program-block-start)
1050 (looking-at "contains[ \t]*\\($\\|!\\)"))
1051 (setq icol (+ icol f90-program-indent)))))
1052 (goto-char pnt)
1053 (beginning-of-line)
1054 (cond ((looking-at "[ \t]*$"))
1055 ((looking-at "[ \t]*#") ; Check for cpp directive.
1056 (setq icol 0))
1057 (t
1058 (skip-chars-forward " \t0-9")
1059 (cond ((or (looking-at f90-else-like-re)
1060 (looking-at f90-end-if-re))
1061 (setq icol (- icol f90-if-indent)))
ee30478d 1062 ((looking-at "end[ \t]*do\\>")
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1063 (setq icol (- icol f90-do-indent)))
1064 ((looking-at f90-end-type-re)
1065 (setq icol (- icol f90-type-indent)))
1066 ((or (looking-at "contains[ \t]*\\(!\\|$\\)")
1067 (f90-looking-at-program-block-end))
1068 (setq icol (- icol f90-program-indent))))))
1069 ))))
1070 icol))
1071\f
1072;; Statement = statement line, a line which is neither blank, nor a comment.
1073(defun f90-previous-statement ()
1074 "Move point to beginning of the previous F90 statement.
1075Return nil if no previous statement is found."
1076 (interactive)
1077 (let (not-first-statement)
1078 (beginning-of-line)
1079 (while (and (setq not-first-statement (zerop (forward-line -1)))
ee30478d 1080 (looking-at "[ \t0-9]*\\(!\\|$\\|#\\)")))
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1081 not-first-statement))
1082
1083(defun f90-next-statement ()
1084 "Move point to beginning of the next F90 statement.
1085Return nil if no later statement is found."
1086 (interactive)
1087 (let (not-last-statement)
1088 (beginning-of-line)
1089 (while (and (setq not-last-statement
1090 (and (zerop (forward-line 1))
1091 (not (eobp))))
1092 (looking-at "[ \t0-9]*\\(!\\|$\\)")))
1093 not-last-statement))
1094
1095(defun f90-beginning-of-subprogram ()
1096 "Move point to the beginning of subprogram.
1097Return (type name) or nil if not found."
1098 (interactive)
1099 (let ((count 1) (case-fold-search t) matching-beg)
1100 (beginning-of-line) (skip-chars-forward " \t0-9")
1101 (if (setq matching-beg (f90-looking-at-program-block-start))
1102 (setq count (- count 1)))
1103 (while (and (not (zerop count))
1104 (re-search-backward f90-program-block-re nil 'move))
1105 (beginning-of-line) (skip-chars-forward " \t0-9")
1106 (cond
1107 ((setq matching-beg (f90-looking-at-program-block-start))
1108 (setq count (- count 1)))
1109 ((f90-looking-at-program-block-end)
1110 (setq count (+ count 1)))))
1111 (beginning-of-line)
1112 (if (zerop count)
1113 matching-beg
1114 (message "No beginning-found.")
1115 nil)))
1116
1117(defun f90-end-of-subprogram ()
1118 "Move point to the end of subprogram.
1119Return (type name) or nil if not found."
1120 (interactive)
1121 (let ((count 1) (case-fold-search t) matching-end)
1122 (beginning-of-line) (skip-chars-forward " \t0-9")
1123 (if (setq matching-end (f90-looking-at-program-block-end))
1124 (setq count (1- count)))
1125 (end-of-line)
1126 (while (and (not (zerop count))
1127 (re-search-forward f90-program-block-re nil 'move))
1128 (beginning-of-line) (skip-chars-forward " \t0-9")
1129 (cond ((f90-looking-at-program-block-start)
1130 (setq count (+ count 1)))
1131 ((setq matching-end (f90-looking-at-program-block-end))
1132 (setq count (1- count ))))
1133 (end-of-line))
1134 (forward-line 1)
1135 (if (zerop count)
1136 matching-end
1137 (message "No end found.")
1138 nil)))
1139
1140(defun f90-mark-subprogram ()
1141 "Put mark at end of F90 subprogram, point at beginning.
1142Marks are pushed and highlight (grey shadow) is turned on."
1143 (interactive)
1144 (let ((pos (point)) program)
1145 (f90-end-of-subprogram)
1146 (push-mark (point) t)
1147 (goto-char pos)
1148 (setq program (f90-beginning-of-subprogram))
1149 ;; The keywords in the preceding lists assume case-insensitivity.
ee30478d 1150 (if (string-match "XEmacs" emacs-version)
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1151 (zmacs-activate-region)
1152 (setq mark-active t)
1153 (setq deactivate-mark nil))
1154 program))
1155
1156(defun f90-comment-region (beg-region end-region)
1157 "Comment/uncomment every line in the region.
1158Insert f90-comment-region at the beginning of every line in the region
1159or, if already present, remove it."
1160 (interactive "*r")
1161 (let ((end (make-marker)))
1162 (set-marker end end-region)
1163 (goto-char beg-region)
1164 (beginning-of-line)
1165 (if (looking-at (regexp-quote f90-comment-region))
1166 (delete-region (point) (match-end 0))
1167 (insert f90-comment-region))
1168 (while (and (zerop (forward-line 1))
1169 (< (point) (marker-position end)))
1170 (if (looking-at (regexp-quote f90-comment-region))
1171 (delete-region (point) (match-end 0))
1172 (insert f90-comment-region)))
1173 (set-marker end nil)))
1174
1175(defun f90-indent-line (&optional no-update)
1176 "Indent current line as F90 code."
1177 (interactive)
1178 (let (indent (no-line-number nil) (pos (make-marker)) (case-fold-search t))
1179 (set-marker pos (point))
1180 (beginning-of-line) ; Digits after & \n are not line-no
1181 (if (save-excursion (and (f90-previous-statement) (f90-line-continued)))
1182 (progn (setq no-line-number t) (skip-chars-forward " \t"))
1183 (f90-indent-line-no))
1184 (if (looking-at "!")
1185 (setq indent (f90-comment-indent))
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1186 (if (and (looking-at "end") f90-smart-end)
1187 (f90-match-end))
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1188 (setq indent (f90-calculate-indent)))
1189 (if (zerop (- indent (current-column)))
1190 nil
1191 (f90-indent-to indent no-line-number))
1192 ;; If initial point was within line's indentation,
1193 ;; position after the indentation. Else stay at same point in text.
1194 (if (< (point) (marker-position pos))
1195 (goto-char (marker-position pos)))
1196 (if (not no-update) (f90-update-line))
1197 (if (and auto-fill-function
1198 (> (save-excursion (end-of-line) (current-column)) fill-column))
1199 (save-excursion (f90-do-auto-fill)))
1200 (set-marker pos nil)))
1201
1202(defun f90-indent-new-line ()
1203 "Reindent the current F90 line, insert a newline and indent the newline.
1204An abbrev before point is expanded if `abbrev-mode' is non-nil.
1205If run in the middle of a line, the line is not broken."
1206 (interactive)
1207 (let (string cont (case-fold-search t))
1208 (if abbrev-mode (expand-abbrev))
1209 (beginning-of-line) ; Reindent where likely to be needed.
1210 (f90-indent-line-no)
1211 (if (or (looking-at "\\(end\\|else\\|!\\)"))
1212 (f90-indent-line 'no-update))
1213 (end-of-line)
1214 (delete-horizontal-space) ;Destroy trailing whitespace
1215 (setq string (f90-in-string))
1216 (setq cont (f90-line-continued))
1217 (if (and string (not cont)) (insert "&"))
1218 (f90-update-line)
1219 (newline)
1220 (if (or string (and cont f90-beginning-ampersand)) (insert "&"))
1221 (f90-indent-line 'no-update)))
1222
1223
1224(defun f90-indent-region (beg-region end-region)
1225 "Indent every line in region by forward parsing."
1226 (interactive "*r")
1227 (let ((end-region-mark (make-marker)) (save-point (point-marker))
1228 (block-list nil) ind-lev ind-curr ind-b cont
1229 struct beg-struct end-struct)
1230 (set-marker end-region-mark end-region)
1231 (goto-char beg-region)
1232 ;; first find a line which is not a continuation line or comment
1233 (beginning-of-line)
ee30478d 1234 (while (and (looking-at "[ \t]*[0-9]*\\(!\\|#\\|[ \t]*$\\)")
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1235 (progn (f90-indent-line 'no-update)
1236 (zerop (forward-line 1)))
1237 (< (point) end-region-mark)))
1238 (setq cont (f90-present-statement-cont))
1239 (while (and (or (eq cont 'middle) (eq cont 'end))
1240 (f90-previous-statement))
1241 (setq cont (f90-present-statement-cont)))
1242 ;; process present line for beginning of block
1243 (setq f90-cache-position (point))
1244 (f90-indent-line 'no-update)
1245 (setq ind-lev (f90-current-indentation))
1246 (setq ind-curr ind-lev)
1247 (beginning-of-line) (skip-chars-forward " \t0-9")
1248 (setq struct nil)
1249 (setq ind-b (cond ((setq struct (f90-looking-at-do)) f90-do-indent)
1250 ((or (setq struct (f90-looking-at-if-then))
1251 (setq struct (f90-looking-at-select-case))
1252 (setq struct (f90-looking-at-where-or-forall))
1253 (looking-at f90-else-like-re))
1254 f90-if-indent)
1255 ((setq struct (f90-looking-at-type-like))
1256 f90-type-indent)
1257 ((or(setq struct (f90-looking-at-program-block-start))
1258 (looking-at "contains[ \t]*\\($\\|!\\)"))
1259 f90-program-indent)))
1260 (if ind-b (setq ind-lev (+ ind-lev ind-b)))
1261 (if struct (setq block-list (cons struct block-list)))
1262 (while (and (f90-line-continued) (zerop (forward-line 1))
1263 (< (point) end-region-mark))
1264 (if (not (zerop (- (current-indentation)
1265 (+ ind-curr f90-continuation-indent))))
1266 (f90-indent-to (+ ind-curr f90-continuation-indent) 'no-line-no)))
1267 ;; process all following lines
1268 (while (and (zerop (forward-line 1)) (< (point) end-region-mark))
1269 (beginning-of-line)
1270 (f90-indent-line-no)
1271 (setq f90-cache-position (point))
1272 (cond ((looking-at "[ \t]*$") (setq ind-curr 0))
1273 ((looking-at "[ \t]*#") (setq ind-curr 0))
1274 ((looking-at "!") (setq ind-curr (f90-comment-indent)))
1275 ((f90-no-block-limit) (setq ind-curr ind-lev))
1276 ((looking-at f90-else-like-re) (setq ind-curr
1277 (- ind-lev f90-if-indent)))
1278 ((looking-at "contains[ \t]*\\($\\|!\\)")
1279 (setq ind-curr (- ind-lev f90-program-indent)))
1280 ((setq ind-b
1281 (cond ((setq struct (f90-looking-at-do)) f90-do-indent)
1282 ((or (setq struct (f90-looking-at-if-then))
1283 (setq struct (f90-looking-at-select-case))
1284 (setq struct (f90-looking-at-where-or-forall)))
1285 f90-if-indent)
1286 ((setq struct (f90-looking-at-type-like))
1287 f90-type-indent)
1288 ((setq struct (f90-looking-at-program-block-start))
1289 f90-program-indent)))
1290 (setq ind-curr ind-lev)
1291 (if ind-b (setq ind-lev (+ ind-lev ind-b)))
1292 (setq block-list (cons struct block-list)))
1293 ((setq end-struct (f90-looking-at-program-block-end))
1294 (setq beg-struct (car block-list)
1295 block-list (cdr block-list))
1296 (if f90-smart-end
1297 (save-excursion
1298 (f90-block-match (car beg-struct)(car (cdr beg-struct))
1299 (car end-struct)(car (cdr end-struct)))))
1300 (setq ind-b
1301 (cond ((looking-at f90-end-if-re) f90-if-indent)
1302 ((looking-at "end[ \t]*do\\>") f90-do-indent)
1303 ((looking-at f90-end-type-re) f90-type-indent)
1304 ((f90-looking-at-program-block-end)
1305 f90-program-indent)))
1306 (if ind-b (setq ind-lev (- ind-lev ind-b)))
1307 (setq ind-curr ind-lev))
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1308 (t (setq ind-curr ind-lev)))
1309 ;; do the indentation if necessary
1310 (if (not (zerop (- ind-curr (current-column))))
1311 (f90-indent-to ind-curr))
1312 (while (and (f90-line-continued) (zerop (forward-line 1))
1313 (< (point) end-region-mark))
1314 (if (not (zerop (- (current-indentation)
1315 (+ ind-curr f90-continuation-indent))))
1316 (f90-indent-to (+ ind-curr f90-continuation-indent) 'no-line-no))))
1317 ;; restore point etc
1318 (setq f90-cache-position nil)
1319 (goto-char save-point)
1320 (set-marker end-region-mark nil)
1321 (set-marker save-point nil)
ee30478d 1322 (if (string-match "Xemacs" emacs-version)
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1323 (zmacs-deactivate-region)
1324 (deactivate-mark))))
1325
1326(defun f90-indent-subprogram ()
1327 "Properly indent the subprogram which contains point."
1328 (interactive)
1329 (save-excursion
1330 (let (program)
1331 (setq program (f90-mark-subprogram))
1332 (if program
1333 (progn
2a74bdc1 1334 (message "Indenting %s %s..."
7f03b2b5 1335 (car program) (car (cdr program)))
034a9d40 1336 (f90-indent-region (point) (mark))
2a74bdc1 1337 (message "Indenting %s %s...done"
7f03b2b5 1338 (car program) (car (cdr program))))
2a74bdc1 1339 (message "Indenting the whole file...")
034a9d40 1340 (f90-indent-region (point) (mark))
2a74bdc1 1341 (message "Indenting the whole file...done")))))
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1342
1343;; autofill and break-line
1344(defun f90-break-line (&optional no-update)
1345 "Break line at point, insert continuation marker(s) and indent."
1346 (interactive)
1347 (let (ctype)
1348 (cond ((f90-in-string)
1349 (insert "&") (newline) (insert "&"))
1350 ((f90-in-comment)
1351 (delete-horizontal-space)
1352 (setq ctype (f90-get-present-comment-type))
1353 (newline) (insert (concat ctype " ")))
1354 (t (delete-horizontal-space)
1355 (insert "&")
1356 (if (not no-update) (f90-update-line))
1357 (newline)
1358 (if f90-beginning-ampersand (insert "& ")))))
1359 (if (not no-update) (f90-indent-line)))
1360
1361(defun f90-find-breakpoint ()
1362 "From fill-column, search backward for break-delimiter."
1363 (let ((bol (f90-get-beg-of-line)))
1364 (re-search-backward f90-break-delimiters bol)
1365 (if f90-break-before-delimiters
1366 (progn (backward-char)
1367 (if (not (looking-at f90-no-break-re))
1368 (forward-char)))
1369 (if (looking-at f90-no-break-re)
1370 (forward-char 2)
1371 (forward-char)))))
1372
1373(defun f90-auto-fill-mode (arg)
1374 "Toggle f90-auto-fill mode.
1375With ARG, turn `f90-auto-fill' mode on iff ARG is positive.
1376In `f90-auto-fill' mode, inserting a space at a column beyond `fill-column'
1377automatically breaks the line at a previous space."
1378 (interactive "P")
1379 (prog1 (setq auto-fill-function
1380 (if (if (null arg)
1381 (not auto-fill-function)
1382 (> (prefix-numeric-value arg) 0))
1383 'f90-do-auto-fill))
3d93ac28 1384 (force-mode-line-update)))
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1385
1386(defun f90-do-auto-fill ()
1387 "Break line if non-white characters beyond fill-column."
1388 (interactive)
1389 ;; Break the line before or after the last delimiter (non-word char).
1390 ;; Will not break **, //, or => (specified by f90-no-break-re).
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1391 ;; Start by checking that line is longer than fill-column.
1392 (if (> (save-excursion (end-of-line) (current-column)) fill-column)
1393 (progn
1394 (move-to-column fill-column)
1395 (if (and (looking-at "[ \t]*$") (not (f90-in-string)))
1396 (delete-horizontal-space)
1397 (f90-find-breakpoint)
1398 (f90-break-line)
1399 (end-of-line)))))
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1400
1401(defun f90-join-lines ()
1402 "Join present line with next line, if this line ends with \&."
1403 (interactive)
1404 (let (pos (oldpos (point)))
1405 (end-of-line)
1406 (skip-chars-backward " \t")
1407 (cond ((= (preceding-char) ?&)
1408 (delete-char -1)
1409 (setq pos (point))
1410 (forward-line 1)
1411 (skip-chars-forward " \t")
1412 (if (looking-at "\&") (delete-char 1))
1413 (delete-region pos (point))
1414 (if (not (f90-in-string))
1415 (progn (delete-horizontal-space) (insert " ")))
1416 (if (and auto-fill-function
1417 (> (save-excursion (end-of-line)
1418 (current-column))
1419 fill-column))
1420 (f90-do-auto-fill))
1421 (goto-char oldpos)
1422 t))))
1423
1424(defun f90-fill-region (beg-region end-region)
1425 "Fill every line in region by forward parsing. Join lines if possible."
1426 (interactive "*r")
1427 (let ((end-region-mark (make-marker))
ee30478d 1428 (f90-smart-end nil) (f90-auto-keyword-case nil) indent (go-on t)
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1429 (af-function auto-fill-function) (auto-fill-function nil))
1430 (set-marker end-region-mark end-region)
1431 (goto-char beg-region)
1432 (while go-on
1433 ;; join as much as possible
1434 (while (f90-join-lines));
1435 (setq indent (+ (f90-current-indentation) f90-continuation-indent))
1436 ;; chop the line if necessary
1437 (while (> (save-excursion (end-of-line) (current-column))
1438 fill-column)
1439 (move-to-column fill-column)
1440 (if (and (looking-at "[ \t]*$") (not (f90-in-string)))
1441 (delete-horizontal-space)
1442 (f90-find-breakpoint)
1443 (f90-break-line 'no-update)
1444 (f90-indent-to indent 'no-line-no)))
1445 (setq go-on (and (< (point) (marker-position end-region-mark))
1446 (zerop (forward-line 1))))
1447 (setq f90-cache-position (point)))
1448 (setq auto-fill-function af-function)
1449 (setq f90-cache-position nil)
ee30478d 1450 (if (string-match "XEmacs" emacs-version)
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1451 (zmacs-deactivate-region)
1452 (deactivate-mark))))
1453\f
1454(defun f90-block-match (beg-block beg-name end-block end-name)
1455 "Match end-struct with beg-struct and complete end-block if possible.
1456Leave point at the end of line."
1457 (search-forward "end" (f90-get-end-of-line))
1458 (catch 'no-match
1459 (if (not (f90-equal-symbols beg-block end-block))
1460 (if end-block
1461 (progn
1462 (message "END %s does not match %s." end-block beg-block)
1463 (end-of-line)
1464 (throw 'no-match nil))
1465 (message "Inserting %s." beg-block)
1466 (insert (concat " " beg-block)))
1467 (search-forward end-block))
1468 (if (not (f90-equal-symbols beg-name end-name))
1469 (cond ((and beg-name (not end-name))
1470 (message "Inserting %s." beg-name)
1471 (insert (concat " " beg-name)))
1472 ((and beg-name end-name)
1473 (message "Replacing %s with %s." end-name beg-name)
1474 (search-forward end-name)
1475 (replace-match beg-name))
1476 ((and (not beg-name) end-name)
1477 (message "Deleting %s." end-name)
1478 (search-forward end-name)
1479 (replace-match "")))
1480 (if end-name (search-forward end-name)))
ee30478d 1481 (if (not (looking-at "[ \t]*!")) (delete-horizontal-space))))
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1482
1483(defun f90-match-end ()
1484 "From an end foo statement, find the corresponding foo including name."
1485 (interactive)
1486 (let ((count 1) (top-of-window (window-start)) (matching-beg nil)
1487 (end-point (point)) (case-fold-search t)
1488 beg-name end-name beg-block end-block end-struct)
1489 (if (save-excursion (beginning-of-line) (skip-chars-forward " \t0-9")
1490 (setq end-struct (f90-looking-at-program-block-end)))
1491 (progn
1492 (setq end-block (car end-struct))
1493 (setq end-name (car (cdr end-struct)))
1494 (save-excursion
1495 (beginning-of-line)
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1496 (while
1497 (and (not (zerop count))
1498 (let ((stop nil) notexist)
1499 (while (not stop)
1500 (setq notexist
1501 (not (re-search-backward
1502 (concat "\\(" f90-blocks-re "\\)") nil t)))
1503 (if notexist
1504 (setq stop t)
1505 (setq stop
1506 (not (or (f90-in-string)
1507 (f90-in-comment))))))
1508 (not notexist)))
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1509 (beginning-of-line) (skip-chars-forward " \t0-9")
1510 (cond ((setq matching-beg
1511 (cond
1512 ((f90-looking-at-do))
1513 ((f90-looking-at-if-then))
1514 ((f90-looking-at-where-or-forall))
1515 ((f90-looking-at-select-case))
1516 ((f90-looking-at-type-like))
1517 ((f90-looking-at-program-block-start))))
1518 (setq count (- count 1)))
1519 ((looking-at (concat "end[ \t]*" f90-blocks-re "\\b"))
ee30478d 1520 (setq count (+ count 1)))))
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1521 (if (not (zerop count))
1522 (message "No matching beginning.")
1523 (f90-update-line)
1524 (if (eq f90-smart-end 'blink)
1525 (if (< (point) top-of-window)
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1526 (message "Matches %d: %s"
1527 (what-line)
1528 (buffer-substring
1529 (progn (beginning-of-line) (point))
1530 (progn (end-of-line) (point))))
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1531 (sit-for 1)))
1532 (setq beg-block (car matching-beg))
1533 (setq beg-name (car (cdr matching-beg)))
1534 (goto-char end-point)
1535 (beginning-of-line)
1536 (f90-block-match beg-block beg-name end-block end-name)))))))
1537
1538(defun f90-insert-end ()
1539 "Inserts an complete end statement matching beginning of present block."
1540 (interactive)
1541 (let ((f90-smart-end (if f90-smart-end f90-smart-end 'blink)))
1542 (insert "end")
1543 (f90-indent-new-line)))
1544\f
1545;; abbrevs and keywords
1546
1547(defun f90-abbrev-start ()
1548 "Typing `\\[help-command] or `? lists all the F90 abbrevs.
1549Any other key combination is executed normally."
1550 (interactive)
ee30478d 1551 (let (e c)
034a9d40 1552 (insert last-command-char)
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1553 (if (string-match "XEmacs" emacs-version)
1554 (progn
1555 (setq e (next-command-event))
1556 (setq c (event-to-character e)))
1557 (setq c (read-event)))
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1558 ;; insert char if not equal to `?'
1559 (if (or (= c ??) (eq c help-char))
034a9d40 1560 (f90-abbrev-help)
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1561 (if (string-match "XEmacs" emacs-version)
1562 (setq unread-command-event e)
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1563 (setq unread-command-events (list c))))))
1564
1565(defun f90-abbrev-help ()
1566 "List the currently defined abbrevs in F90 mode."
1567 (interactive)
1568 (message "Listing abbrev table...")
1569 (display-buffer (f90-prepare-abbrev-list-buffer))
1570 (message "Listing abbrev table...done"))
1571
1572(defun f90-prepare-abbrev-list-buffer ()
1573 (save-excursion
1574 (set-buffer (get-buffer-create "*Abbrevs*"))
1575 (erase-buffer)
1576 (insert-abbrev-table-description 'f90-mode-abbrev-table t)
1577 (goto-char (point-min))
1578 (set-buffer-modified-p nil)
1579 (edit-abbrevs-mode))
1580 (get-buffer-create "*Abbrevs*"))
1581
1582(defun f90-upcase-keywords ()
1583 "Upcase all F90 keywords in the buffer."
1584 (interactive)
1585 (f90-change-keywords 'upcase-word))
1586
1587(defun f90-capitalize-keywords ()
1588 "Capitalize all F90 keywords in the buffer."
1589 (interactive)
1590 (f90-change-keywords 'capitalize-word))
1591
1592(defun f90-downcase-keywords ()
1593 "Downcase all F90 keywords in the buffer."
1594 (interactive)
1595 (f90-change-keywords 'downcase-word))
1596
1597(defun f90-upcase-region-keywords (beg end)
1598 "Upcase all F90 keywords in the region."
1599 (interactive "*r")
1600 (f90-change-keywords 'upcase-word beg end))
1601
1602(defun f90-capitalize-region-keywords (beg end)
1603 "Capitalize all F90 keywords in the region."
1604 (interactive "*r")
1605 (f90-change-keywords 'capitalize-word beg end))
1606
1607(defun f90-downcase-region-keywords (beg end)
1608 "Downcase all F90 keywords in the region."
1609 (interactive "*r")
1610 (f90-change-keywords 'downcase-word beg end))
1611
1612;; Change the keywords according to argument.
1613(defun f90-change-keywords (change-word &optional beg end)
1614 (save-excursion
1615 (setq beg (if beg beg (point-min)))
1616 (setq end (if end end (point-max)))
1617 (let ((keyword-re
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1618 (concat "\\("
1619 f90-keywords-re "\\|" f90-procedures-re "\\|"
1620 f90-hpf-keywords-re "\\|" f90-operators-re "\\)"))
1621 (ref-point (point-min)) state
1622 (modified (buffer-modified-p)) saveword back-point)
034a9d40 1623 (goto-char beg)
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1624 (unwind-protect
1625 (while (re-search-forward keyword-re end t)
1626 (if (progn
1627 (setq state (parse-partial-sexp ref-point (point)))
1628 (or (nth 3 state) (nth 4 state)
1629 (save-excursion ; Check for cpp directive.
1630 (beginning-of-line)
1631 (skip-chars-forward " \t0-9")
1632 (looking-at "#"))))
1633 ()
1634 (setq ref-point (point)
1635 back-point (save-excursion (backward-word 1) (point)))
1636 (setq saveword (buffer-substring back-point ref-point))
1637 (funcall change-word -1)
1638 (or (string= saveword (buffer-substring back-point ref-point))
1639 (setq modified t))))
1640 (or modified (set-buffer-modified-p nil))))))
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1641
1642(provide 'f90)
db97b872 1643
034a9d40 1644;;; f90.el ends here