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1;; f90.el --- Fortran-90 mode (free format) for GNU Emacs 19.x.
2;; Copyright (C) 1995 Free Software Foundation, Inc.
3
4;; Author: Torbj\"orn Einarsson <tfkte@fy.chalmers.se>
5;; Created: Jan 21, 1995
6;; Version: 1.03
7;; Keywords: fortran, f90, languages
8
9;; This program is free software; you can redistribute it and/or modify
10;; it under the terms of the GNU General Public License as published by
11;; the Free Software Foundation; either version 2 of the License, or
12;; (at your option) any later version.
13
14;; This program is distributed in the hope that it will be useful,
15;; but WITHOUT ANY WARRANTY; without even the implied warranty of
16;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17;; GNU General Public License for more details.
18
19;; You should have received a copy of the GNU General Public License
20;; along with this program; if not, write to the Free Software
21;; Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
22
23;;; Commentary:
24;; Smart mode for editing F90 programs in FREE FORMAT.
25;; Knows about continuation lines, named structured statements, and other
26;; new features in F90 including HPF (High Performance Fortran) structures.
27;; The basic feature is to provide an accurate indentation of F90 programs.
28;; In addition, there are many more features like automatic matching of all
29;; end statements, an auto-fill function to break long lines, a join-lines
30;; function which joins continued lines etc etc.
31;; To facilitate typing, a fairly complete list of abbreviations is provided.
32;; For example, `i is short-hand for integer (if abbrev-mode is on).
33
34;; There are two separate features for highlighting the code.
35;; 1) Upcasing or capitalizing of all keywords.
36;; 2) Different colors/fonts for different structures. (X-windows)
37;; (using either font-lock-mode or hilit19)
38;; Automatic upcase of downcase of keywords is controlled by the parameter
39;; f90-auto-keyword-case.
40;; To use hilit19 it must be loaded before this file. Then the parameter
41;; f90-auto-hilit19 determines if each line should be updated automatically.
42
43;; The indentations of lines starting with ! is determined by the first of the
44;; following matches:
45;; start-string indent variable holding start-string
46;; !!! 0
47;; !hpf$ 0 f90-directive-comment (default nil)
48;; !!$ 0 f90-comment-region (default !!$)
49;; ! as code f90-indented-comment (a regexp, default !)
50;; default comment-column
51;; Ex: Here is the result of three different settings of f90-indented-comment
52;; f90-indented-comment !-indentation !!-indentation
53;; ! as code as code
54;; !! comment-column as code
55;; ![^!] as code comment-column
56;; Trailing comments are indented to comment-column with indent-for-comment M-;
57;; f90-comment-region (C-c;) toggles insertion of f90-comment-region in region.
58
59;; One common convention for free vs. fixed format is that free-format files
60;; have the ending .f90 while the fixed format files have the ending .f.
61;; To make f90-mode work, put this file in, for example, your directory
62;; ~/lisp, and be sure that you have the following in your .emacs-file
63;; (setq load-path (append load-path '("~/lisp")))
64;; (autoload 'f90-mode "f90"
65;; "Major mode for editing Fortran 90 code in free format." t)
66;; (setq auto-mode-alist (append auto-mode-alist
67;; (list '("\\.f90$" . f90-mode))))
68;; Once you have entered f90-mode, you may get more info by using
69;; the command describe-mode (C-h m). For online help describing various
70;; functions use C-h f <Name of function you want described>
71
72;; To customize the f90-mode for your taste, use, for example:
73;; (you don't have to specify values for all the parameters below)
74;;(setq f90-mode-hook
75;; '(lambda () (setq f90-do-indent 3
76;; f90-if-indent 3
77;; f90-type-indent 3
78;; f90-program-indent 2
79;; f90-continuation-indent 5
80;; f90-comment-region "!!$"
81;; f90-directive-comment nil
82;; f90-indented-comment "!"
83;; f90-break-delimiters "[-+\\*/,><=% \t]"
84;; f90-break-before-delimiters t
85;; f90-beginning-ampersand t
86;; f90-smart-end 'blink
87;; f90-auto-keyword-case nil
88;; f90-auto-hilit19 t
89;; f90-leave-line-no nil
90;; f90-startup-message t)
91;; ;;The rest is not default.
92;; (abbrev-mode 1) ; turn on abbreviation mode
93;; (f90-auto-fill-mode 1) ; turn on auto-filling
94;; (if f90-auto-keyword-case ; change case of all keywords on startup
95;; (f90-change-keywords f90-auto-keyword-case))
96;; ))
97;; in your .emacs file (the shown values are the defaults). You can also
98;; change the values of the lists f90-keywords etc.
99;; The auto-fill and abbreviation minor modes are accessible from the menu,
100;; or by using M-x f90-auto-fill-mode and M-x abbrev-mode, respectively.
101
102;; Remarks
103;; 1) Line numbers are by default left-justified. If f90-leave-line-no is
104;; non-nil, the line numbers are never touched.
105;; 2) Multi-; statements like > do i=1,20 ; j=j+i ; end do < are not handled
106;; correctly, but I imagine them to be rare.
107;; 3) You can use either hilit19 or font-lock-mode for your highlighting
108;; a) To use hilit19, be sure that hilit19 is loaded before this file
109;; b) To use font-lock-mode, nothing special is needed.
110;; 4) For FIXED FORMAT code, use the ordinary fortran mode.
111;; 5) This mode does not work under emacs-18.x.
112
113;; List of user commands
114;; f90-previous-statement f90-next-statement
115;; f90-beginning-of-subprogram f90-end-of-subprogram f90-mark-subprogram
116;; f90-comment-region
117;; f90-indent-line f90-indent-new-line
118;; f90-indent-region (can be called by calling indent-region)
119;; f90-indent-subprogram
120;; f90-break-line f90-join-lines
121;; f90-auto-fill-mode
122;; f90-fill-region
123;; f90-insert-end
124;; f90-upcase-keywords f90-upcase-region-keywords
125;; f90-downcase-keywords f90-downcase-region-keywords
126;; f90-capitalize-keywords f90-capitalize-region-keywords
127
128;; Thanks to all the people who have tested the mode. Special thanks to Jens
129;; Bloch Helmers for encouraging me to write this code, for creative
130;; suggestions as well as for the lists of hpf-commands.
131;; Also thanks to the authors of the fortran and pascal modes, on which some
132;; of this code is built.
133
134;;; Code:
135(defconst f90-mode-version "version 1.03")
136(defconst bug-f90-mode "tfkte@fy.chalmers.se"
137 "Address of mailing list for F90 mode bugs.")
138
139;; User options
140(defvar f90-do-indent 3
141 "*Extra indentation applied to DO blocks.")
142
143(defvar f90-if-indent 3
144 "*Extra indentation applied to IF, SELECT CASE, WHERE and FORALL blocks.")
145
146(defvar f90-type-indent 3
147 "*Extra indentation applied to TYPE, INTERFACE and BLOCK DATA blocks.")
148
149(defvar f90-program-indent 2
150 "*Extra indentation applied to PROGRAM/MODULE/SUBROUTINE/FUNCTION blocks.")
151
152(defvar f90-continuation-indent 5
153 "*Extra indentation applied to F90 continuation lines.")
154
155(defvar f90-comment-region "!!$"
156 "*String inserted by \\[f90-comment-region]\
157 at start of each line in region.")
158
159(defvar f90-indented-comment "!"
160 "*Comments to be indented like code.")
161
162(defvar f90-directive-comment nil
163 "*String of comment-like directive like \"!HPF$\", not to be indented.")
164
165(defvar f90-beginning-ampersand t
166 "*t makes automatic insertion of \& at beginning of continuation line.")
167
168(defvar f90-smart-end 'blink
169 "*From an END statement, check and fill the end using matching block start.
170Allowed values are 'blink, 'no-blink, and nil, which determine
171whether to blink the matching beginning.")
172
173(defvar f90-break-delimiters "[-+\\*/><=,% \t]"
174 "*Regexp holding list of delimiters at which lines may be broken.")
175
176(defvar f90-break-before-delimiters t
177 "*Non-nil causes `f90-do-auto-fill' to break lines before delimiters.")
178
179(defvar f90-auto-keyword-case nil
180 "*Automatic case conversion of keywords.
181 The options are 'downcase-word, 'upcase-word, 'capitalize-word and nil")
182
183(defvar f90-auto-hilit19 t
184 "*Automatic highlight of line at every indent or newline (for hilit19).")
185
186(defvar f90-leave-line-no nil
187 "*If nil, left-justify linenumbers.")
188
189(defvar f90-startup-message t
190 "*Non-nil displays a startup message when F90 mode is first called.")
191
192(defvar f90-keywords
193 '("allocate" "allocatable" "assign" "assignment" "backspace" "block"
194 "call" "case" "character" "close" "common" "complex" "contains"
195 "continue" "cycle" "data" "deallocate" "dimension" "do" "double" "else"
196 "elseif" "elsewhere" "end" "enddo" "endfile" "endif" "entry" "equivalence"
197 "exit" "external" "forall" "format" "function" "goto" "if" "implicit"
198 "include" "inquire" "integer" "intent" "interface" "intrinsic" "logical"
199 "module" "namelist" "none" "nullify" "open" "optional" "parameter"
200 "pause" "pointer" "precision" "print" "private" "procedure" "program"
201 "public" "read" "real" "recursive" "return" "rewind" "save" "select"
202 "sequence" "stop" "subroutine" "target" "then" "type" "use" "where"
203 "while" "write")
204 "*List of f90-keywords.")
205
206(defvar f90-intrinsic-procedures
207 '("abs" "achar" "acos" "adjustl" "adjustr" "aimag" "aint" "all" "allocated"
208 "anint" "any" "asin" "associated" "atan" "atan2" "bit_size" "btest"
209 "ceiling" "char" "cmplx" "conjg" "cos" "cosh" "count" "cshift"
210 "date_and_time" "dble" "digits" "dim" "dot_product" "dprod" "eoshift"
211 "epsilon" "exp" "exponent" "floor" "fraction" "huge" "iachar" "iand"
212 "ibclr" "ibits" "ibset" "ichar" "ieor" "index" "int" "ior" "ishft"
213 "ishftc" "kind" "lbound" "len" "len_trim" "lge" "lgt" "lle" "llt" "log"
214 "logical" "log10" "matmul" "max" "maxexponent" "maxloc" "maxval" "merge"
215 "min" "minexponent" "minloc" "minval" "mod" "modulo" "mvbits" "nearest"
216 "nint" "not" "pack" "precision" "present" "product" "radix" "random_number"
217 "random_seed" "range" "real" "repeat" "reshape" "rrspacing" "scale"
218 "scan" "selected_int_kind" "selected_real_kind" "set_exponent" "shape"
219 "sign" "sin" "sinh" "size" "spacing" "spread" "sqrt" "sum"
220 "system_clock" "tan" "tanh" "tiny" "transfer" "transpose" "trim"
221 "ubound" "unpack" "verify")
222 "*List of F90 intrinsic procedures.")
223
224(defvar f90-hpf-procedures
225 '("all_prefix" "all_scatter" "all_suffix" "any_prefix" "any_scatter"
226 "any_suffix" "copy_prefix" "copy_scatter" "copy_suffix" "count_prefix"
227 "count_scatter" "count_suffix" "grade_down" "grade_up" "hpf_alignment"
228 "hpf_template" "hpf_distribution" "iall" "iall_prefix" "iall_scatter"
229 "iall_suffix" "iany" "iany_prefix" "iany_scatter" "iany_suffix" "iparity"
230 "iparity_prefix" "iparity_scatter" "iparity_suffix" "leadz" "maxval_prefix"
231 "maxval_scatter" "maxval_suffix" "minval_prefix" "minval_scatter"
232 "minval_suffix" "parity" "parity_prefix" "parity_scatter" "parity_suffix"
233 "popcnt" "poppar" "product_prefix" "product_scatter" "product_suffix"
234 "sum_prefix" "sum_scatter" "sum_suffix" "ilen" "number_of_processors"
235 "processors_shape")
236 "*List of hpf intrinsic procedures.")
237
238(defvar f90-hpf-directives
239 '("align" "distribute" "dynamic" "inherit" "template" "processors"
240 "realign" "redistribute" "independent")
241 "*List of hpf directives.")
242
243(defvar f90-hpf-keywords
244 '("pure" "extrinsic" "new" "with" "onto" "block" "cyclic")
245 "*List of hpf keywords.")
246
247;; Highlighting patterns
248
249(defconst f90-font-lock-keywords-1
250 (purecopy
251 (list
252 ;; Subroutine and function declarations
253 '("^[ \t]*\\(program\\|module\\)[ \t]+\\sw+" 1 font-lock-keyword-face)
254 '("^[ \t]*\\(program\\|module\\)[ \t]+\\(\\sw+\\)" 2
255 font-lock-function-name-face)
256 '("\\(^.*\\(function\\|subroutine\\)\\)[ \t]+\\sw+" 1
257 font-lock-keyword-face)
258 '("^.*\\(function\\|subroutine\\)[ \t]+\\(\\sw+\\)" 2
259 font-lock-function-name-face)
260 '("^[ \t]*end[ \t]*\\(program\\|module\\|function\\|subroutine\\|type\\)"
261 . font-lock-keyword-face)
262 (list (concat "^[ \t]*end[ \t]*\\(program\\|module\\|function\\|"
263 "subroutine\\|type\\)[ \t]+\\(\\sw+\\)") 2
264 'font-lock-function-name-face)
265 '("^[ \t]*\\(type\\)[ \t]+\\sw+" 1 font-lock-keyword-face)
266 '("^[ \t]*type[ \t]+\\(\\sw+\\)" 1 font-lock-function-name-face)
267 '("^[ \t]*\\(end[ \t]*\\)?interface\\>" . font-lock-keyword-face)
268 '("^[ \t]*contains\\>" . font-lock-keyword-face)))
269 "For consideration as a value of `f90-font-lock-keywords-1'.
270This does fairly subdued highlighting of comments and function names.")
271
272(defconst f90-font-lock-keywords-2
273 (purecopy
274 (append f90-font-lock-keywords-1
275 (list
276 ;; Variable declarations
277 '("\\(\\(real\\|integer\\|character\\|complex\\|logical\\|type\\).*\\)::"
278 1 font-lock-type-face)
279 '("implicit[ \t]*none" . font-lock-keyword-face)
280 '("^[ \t]*\\(\\sw+[ \t]*:[ \t]*\\)?\\(do\\([ \t]*while\\)?\\)\\>"
281 2 font-lock-keyword-face)
282 '("^[ \t]*\\(\\sw+\\)[ \t]*:[ \t]*\\(do\\([ \t]*while\\)?\\)\\>" 1
283 font-lock-function-name-face)
284 '("^[ \t]*\\(end[ \t]*do\\)\\>" 1 font-lock-keyword-face)
285 '("^[ \t]*end[ \t]*do[ \t]+\\(\\sw+\\)" 1 font-lock-function-name-face)
286 '("^[ \t]*\\(\\sw+[ \t]*:[ \t]*\\)?\\(if\\)\\>" 2
287 font-lock-keyword-face)
288 '("^[ \t]*\\(\\sw+\\)[ \t]*:[ \t]*if\\>" 1 font-lock-function-name-face)
289 '("^[ \t]*\\(end[ \t]*if\\)\\>" 1 font-lock-keyword-face)
290 '("^[ \t]*end[ \t]*if[ \t]+\\(\\sw+\\)" 1 font-lock-function-name-face)
291 '("^[ \t]*\\(\\sw+[ \t]*:[ \t]*\\)?\\(select[ \t]*case\\)\\>" 2
292 font-lock-keyword-face)
293 '("^[ \t]*\\(\\sw+\\)[ \t]*:[ \t]*\\(select[ \t]*case\\)\\>" 1
294 font-lock-function-name-face)
295 '("^[ \t]*end[ \t]*select\\>" . font-lock-keyword-face)
296 '("^[ \t]*end[ \t]*select\\>[ \t]+\\(\\sw+\\)" 1
297 font-lock-function-name-face)
298 '("\\(where\\|forall\\)[ \t]*(" 1 font-lock-keyword-face)
299 '("\\<\\(elsewhere\\|else\\|else[ \t]*if\\)\\>" . font-lock-keyword-face)
300 '("\\<end[ \t]*\\(where\\|forall\\)\\>" . font-lock-keyword-face)
301 '("\\<then\\>" . font-lock-keyword-face)
302 '("\\<\\(exit\\|cycle\\)\\>" . font-lock-keyword-face)
303 '("\\<\\(exit\\|cycle\\)[ \t]*\\(\\sw+\\)\\>" 2
304 font-lock-function-name-face)
305 '("\\<\\(stop\\|return\\)\\>" . font-lock-keyword-face)
306 '("^[ \t]*\\(case\\)[ \t]*\\((\\|default\\)" 1 font-lock-keyword-face)
307 (concat "\\<\\("(mapconcat 'identity f90-keywords "\\|") "\\)\\>")
308 (concat "\\<\\("(mapconcat 'identity f90-intrinsic-procedures "\\|")
309 "\\)\\>")
310 (concat "\\<\\("(mapconcat 'identity f90-hpf-procedures "\\|")
311 "\\)\\>")
312 (concat "\\<\\("(mapconcat 'identity f90-hpf-directives "\\|")
313 "\\)\\>")
314 (concat "\\<\\("(mapconcat 'identity f90-hpf-keywords "\\|")
315 "\\)\\>"))))
316 "For consideration as a value of `f90-font-lock-keywords'.
317This highlights variable types, \"keywords,\" etc.")
318
319(defvar f90-font-lock-keywords f90-font-lock-keywords-2
320 "*Additional expressions to highlight in F90 mode.")
321
322;; hilit19 customization and expressions
323(defvar f90-face-string 'named-param "*Face for strings.")
324(defvar f90-face-comment 'comment "*Face for comments.")
325(defvar f90-face-decl 'include "*Face for declarations.")
326(defvar f90-face-prog 'defun "*Face for program blocks.")
327(defvar f90-face-label 'Tomato-bold "*Face for labels.")
328(defvar f90-face-type 'defun "*Face for type blocks.")
329(defvar f90-face-interface 'defun "*Face for interface blocks.")
330(defvar f90-face-contains 'defun "*Face for contains statement.")
331(defvar f90-face-do 'SteelBlue-bold "*Face for do-structure.")
332(defvar f90-face-if 'define "*Face for if-structure.")
333(defvar f90-face-select 'define "*Face for select-case structure.")
334(defvar f90-face-stop 'defun "*Face for stop and return.")
335(defvar f90-face-exit 'SteelBlue-bold "*Face for exit and cycle.")
336(defvar f90-face-keyword 'struct "*Face for keywords.")
337(defvar f90-face-intrinsics 'struct "*Face for intrinsic procedures.")
338;; Highlighting for HPF (High-Peformance Fortran)
339(defvar f90-face-hpf-procedures 'struct "*Face for hpf procedures.")
340(defvar f90-face-hpf-directives 'struct "*Face for hpf directives.")
341(defvar f90-face-hpf-keywords 'struct "*Face for hpf keywords.")
342
343(if (fboundp 'hilit-set-mode-patterns)
344 (hilit-set-mode-patterns
345 'f90-mode
346 (list
347 ;; Allow for strings delimited by ' and by " and for multirow strings.
348 ;; A multi-row string includes &\n& (+ possible whitespace and comments)
349 (list (concat
350 "\\(\"[^\"\n]*\\(&[ \t]*\\(![^\n]*\\)?\n[ \t]*&[^\"\n]*\\)*\""
351 "\\|'[^'\n]*\\(&[ \t]*\\(![^\n]*\\)?\n[ \t]*&[^'\n]*\\)*'\\)")
352 nil f90-face-string)
353 (list "!" "$" f90-face-comment)
354 (list "\\(\\(real\\|integer\\|character\\|complex\\|logical\
355\\|type\\).*\\)::" 1 f90-face-decl)
356 (list "implicit[ \t]*none" nil f90-face-decl)
357 (list "^[ \t]*\\(program\\|module\\)[ \t]+\\sw+" 1 f90-face-prog)
358 (list "^[ \t]*\\(program\\|module\\)[ \t]+\\(\\sw+\\)" 2 f90-face-label)
359 (list "\\(^.*\\(function\\|subroutine\\)\\)[ \t]+\\sw+" 1
360 f90-face-prog)
361 (list "^.*\\(function\\|subroutine\\)[ \t]+\\(\\sw+\\)" 2
362 f90-face-label)
363 (list "^[ \t]*end[ \t]*\\(program\\|module\\|function\
364\\|subroutine\\|type\\)" nil f90-face-prog)
365 (list (concat "^[ \t]*end[ \t]*\\(program\\|module\\|function\\|"
366 "subroutine\\|type\\)[ \t]+\\(\\sw+\\)") 2 f90-face-label)
367 (list "^[ \t]*\\(type\\)[ \t]+\\sw+" 1 f90-face-type)
368 (list "^[ \t]*type[ \t]+\\(\\sw+\\)" 1 f90-face-label)
369 (list "^[ \t]*\\(end[ \t]*\\)?interface\\>" nil f90-face-interface)
370 (list "^[ \t]*contains\\>" nil f90-face-contains)
371 (list "^[ \t]*\\(\\sw+[ \t]*:[ \t]*\\)?\\(do\\([ \t]*while\\)?\\)\\>"
372 2 f90-face-do)
373 (list "^[ \t]*\\(\\sw+\\)[ \t]*:[ \t]*\\(do\\([ \t]*while\\)?\\)\\>" 1
374 f90-face-label)
375 (list "^[ \t]*\\(end[ \t]*do\\)\\>" 1 f90-face-do)
376 (list "^[ \t]*end[ \t]*do[ \t]+\\(\\sw+\\)" 1 f90-face-label)
377 (list "^[ \t]*\\(\\sw+[ \t]*:[ \t]*\\)?\\(if\\)\\>" 2 f90-face-if)
378 (list "^[ \t]*\\(\\sw+\\)[ \t]*:[ \t]*if\\>" 1 f90-face-label)
379 (list "^[ \t]*\\(end[ \t]*if\\)\\>" 1 f90-face-if)
380 (list "^[ \t]*end[ \t]*if[ \t]+\\(\\sw+\\)" 1 f90-face-label)
381 (list "^[ \t]*\\(\\sw+[ \t]*:[ \t]*\\)?\\(select[ \t]*case\\)\\>" 2
382 f90-face-select)
383 (list "^[ \t]*\\(\\sw+\\)[ \t]*:[ \t]*\\(select[ \t]*case\\)\\>" 1
384 f90-face-label)
385 (list "^[ \t]*end[ \t]*select\\>" nil f90-face-select)
386 (list "^[ \t]*end[ \t]*select\\>[ \t]+\\(\\sw+\\)" 1 f90-face-label)
387 (list "\\(where\\|forall\\)[ \t]*(" 1 f90-face-if)
388 (list "\\<\\(elsewhere\\|else\\|else[ \t]*if\\)\\>" nil f90-face-if)
389 (list "\\<end[ \t]*\\(where\\|forall\\)\\>" nil f90-face-if)
390 (list "\\<then\\>" nil f90-face-if)
391 (list "\\<\\(exit\\|cycle\\)\\>" nil f90-face-exit)
392 (list "\\<\\(exit\\|cycle\\)[ \t]*\\sw+\\>" nil f90-face-label)
393 (list "\\<\\(stop\\|return\\)\\>" nil f90-face-stop)
394 (list "^[ \t]*\\(case\\)[ \t]*\\((\\|default\\)" 1 f90-face-select)
395 (list (concat "\\<\\("(mapconcat 'identity f90-keywords "\\|")
396 "\\)\\>") nil f90-face-keyword)
397 (list (concat "\\<\\("(mapconcat 'identity f90-intrinsic-procedures "\\|")
398 "\\)\\>") nil f90-face-intrinsics)
399 (list (concat "\\<\\("(mapconcat 'identity f90-hpf-procedures "\\|")
400 "\\)\\>") nil f90-face-hpf-procedures)
401 (list (concat "\\<\\("(mapconcat 'identity f90-hpf-directives "\\|")
402 "\\)\\>") nil f90-face-hpf-directives)
403 (list (concat "\\<\\("(mapconcat 'identity f90-hpf-keywords "\\|")
404 "\\)\\>") nil f90-face-hpf-keywords))
405 nil 'case-insensitive))
406
407;; syntax table
408(defvar f90-mode-syntax-table nil
409 "Syntax table in use in F90 mode buffers.")
410
411(if f90-mode-syntax-table
412 ()
413 (setq f90-mode-syntax-table (make-syntax-table))
414 (modify-syntax-entry ?\! "<" f90-mode-syntax-table) ; beg. comment
415 (modify-syntax-entry ?\n ">" f90-mode-syntax-table) ; end comment
416 (modify-syntax-entry ?_ "w" f90-mode-syntax-table) ; underscore in names
417 (modify-syntax-entry ?\' "\"" f90-mode-syntax-table) ; string quote
418 (modify-syntax-entry ?\" "\"" f90-mode-syntax-table) ; string quote
419 (modify-syntax-entry ?\` "w" f90-mode-syntax-table) ; for abbrevs
420 (modify-syntax-entry ?\r " " f90-mode-syntax-table) ; return is whitespace
421 (modify-syntax-entry ?+ "." f90-mode-syntax-table)
422 (modify-syntax-entry ?- "." f90-mode-syntax-table)
423 (modify-syntax-entry ?= "." f90-mode-syntax-table)
424 (modify-syntax-entry ?* "." f90-mode-syntax-table)
425 (modify-syntax-entry ?/ "." f90-mode-syntax-table)
426 (modify-syntax-entry ?\\ "/" f90-mode-syntax-table)) ; escape chars
427
428;; keys
429(defvar f90-mode-map ()
430 "Keymap used in F90 mode.")
431(if f90-mode-map
432 ()
433 (setq f90-mode-map (make-sparse-keymap))
434 (define-key f90-mode-map "`" 'f90-abbrev-start)
435 (define-key f90-mode-map "\C-c;" 'f90-comment-region)
436 (define-key f90-mode-map "\C-\M-a" 'f90-beginning-of-subprogram)
437 (define-key f90-mode-map "\C-\M-e" 'f90-end-of-subprogram)
438 (define-key f90-mode-map "\C-\M-h" 'f90-mark-subprogram)
439 (define-key f90-mode-map "\C-\M-q" 'f90-indent-subprogram)
440 (define-key f90-mode-map "\C-j" 'f90-indent-new-line) ; LFD equals C-j
441 (define-key f90-mode-map "\r" 'newline)
442 (define-key f90-mode-map "\C-c\r" 'f90-break-line)
443 ;; (define-key f90-mode-map [M-return] 'f90-break-line)
444 (define-key f90-mode-map "\C-c\C-d" 'f90-join-lines)
445 (define-key f90-mode-map "\C-c\C-f" 'f90-fill-region)
446 (define-key f90-mode-map "\C-c\C-p" 'f90-previous-statement)
447 (define-key f90-mode-map "\C-c\C-n" 'f90-next-statement)
448 (define-key f90-mode-map "\C-c\C-w" 'f90-insert-end)
449 (define-key f90-mode-map "\t" 'f90-indent-line))
450;; menus
451(if (string-match "Lucid" emacs-version)
452 ;; XEmacs
453 (progn
454 (add-menu nil "F90"
455 '(
456 ["Indent subprogram" f90-indent-subprogram t]
457 ["Mark subprogram" f90-mark-subprogram t]
458 ["Beginning of subprogram" f90-beginning-of-subprogram t]
459 ["End of subprogram" f90-end-of-subprogram t]
460 "-----"
461 ["(Un)Comment region" f90-comment-region t]
462 ["Indent region" indent-region t]
463 ["Fill region" f90-fill-region t]
464 "-----"
465 ["Break line at point" f90-break-line t]
466 ["Join with next line" f90-join-lines t]
467 ["Insert newline." newline t]
468 ["Insert end." f90-insert-end t]
469 "-----"
470 ["UPCASE keywords (buffer)" f90-upcase-keywords t]
471 ["UPCASE keywords (region)" f90-upcase-region-keywords
472 t]
473 ["Capitalize keywords (buffer)" f90-capitalize-keywords t]
474 ["Capitalize keywords (region)"
475 f90-capitalize-region-keywords t]
476 ["downcase keywords (buffer)" f90-downcase-keywords t]
477 ["downcase keywords (region)"
478 f90-downcase-region-keywords t]
479 "-----"
480 ["Toggle abbrev-mode" abbrev-mode t]
481 ["Toggle auto-fill" f90-auto-fill-mode t])))
482 ;; FSF Emacs
483 (define-key f90-mode-map [menu-bar] (make-sparse-keymap))
484 (define-key f90-mode-map [menu-bar f90]
485 (cons "F90" (make-sparse-keymap "f90")))
486 (define-key f90-mode-map [menu-bar f90 abbrev-mode]
487 '("Toggle abbrev-mode" . abbrev-mode))
488 (define-key f90-mode-map [menu-bar f90 f90-auto-fill-mode]
489 '("Toggle auto-fill" . f90-auto-fill-mode))
490 (define-key f90-mode-map [menu-bar f90 f90-downcase-region-keywords]
491 '("downcase keywords (region)" . f90-downcase-region-keywords))
492 (define-key f90-mode-map [menu-bar f90 f90-downcase-keywords]
493 '("downcase keywords (buffer)" . f90-downcase-keywords))
494 (define-key f90-mode-map [menu-bar f90 f90-capitalize-keywords]
495 '("Capitalize keywords (region)" . f90-capitalize-region-keywords))
496 (define-key f90-mode-map [menu-bar f90 f90-capitalize-region-keywords]
497 '("Capitalize keywords (buffer)" . f90-capitalize-keywords))
498 (define-key f90-mode-map [menu-bar f90 f90-upcase-region-keywords]
499 '("UPCASE keywords (region)" . f90-upcase-region-keywords))
500 (define-key f90-mode-map [menu-bar f90 f90-upcase-keywords]
501 '("UPCASE keywords (buffer)" . f90-upcase-keywords))
502 (define-key f90-mode-map [menu-bar f90 f90-insert-end]
503 '("Insert end." . f90-insert-end))
504 (define-key f90-mode-map [menu-bar f90 f90-join-lines]
505 '("Join with next line." . f90-join-lines))
506 (define-key f90-mode-map [menu-bar f90 f90-break-line]
507 '("Break line at point" . f90-break-line))
508 (define-key f90-mode-map [menu-bar f90 f90-fill-region]
509 '("Fill Region" . f90-fill-region))
510 (define-key f90-mode-map [menu-bar f90 indent-region]
511 '("Indent Region" . indent-region))
512 (define-key f90-mode-map [menu-bar f90 f90-comment-region]
513 '("(Un)Comment Region" . f90-comment-region))
514 (define-key f90-mode-map [menu-bar f90 f90-end-of-subprogram]
515 '("End of Subprogram" . f90-end-of-subprogram))
516 (define-key f90-mode-map [menu-bar f90 f90-beginning-of-subprogram]
517 '("Beginning of Subprogram" . f90-beginning-of-subprogram))
518 (define-key f90-mode-map [menu-bar f90 f90-mark-subprogram]
519 '("Mark Subprogram" . f90-mark-subprogram))
520 (define-key f90-mode-map [menu-bar f90 f90-indent-subprogram]
521 '("Indent Subprogram" . f90-indent-subprogram)))
522
523(defconst f90-symbol-re "[a-z_][a-z_0-9]*")
524(defconst f90-blocks-re
525 "\\(block[ \t]*data\\|do\\|if\\|interface\\|function\\|module\\|\
526program\\|select\\|subroutine\\|type\\|where\\|forall\\)\\>")
527(defconst f90-program-block-re
528 "\\(program\\|module\\|subroutine\\|function\\)")
529(defconst f90-else-like-re
530 "\\(else\\|else[ \t]*if\\|elsewhere\\|case[ \t]*(\\|case[ \t]*default\\)")
531(defconst f90-end-if-re
532 "end[ \t]*\\(if\\|select\\|where\\|forall\\)\\>")
533(defconst f90-end-type-re
534 "end[ \t]*\\(type\\|interface\\|block[ \t]*data\\)\\>")
535(defconst f90-no-break-re "\\(\\*\\*\\|//\\|=>\\)")
536;; A temporary position to make region operators faster
537(defvar f90-cache-position nil)
538(make-variable-buffer-local 'f90-cache-position)
539\f
540;; abbrevs have generally two letters, except standard types `c, `i, `r, `t
541(defvar f90-mode-abbrev-table nil)
542(if f90-mode-abbrev-table
543 ()
544 (let ((ac abbrevs-changed))
545 (define-abbrev-table 'f90-mode-abbrev-table ())
546 (define-abbrev f90-mode-abbrev-table "`al" "allocate" nil)
547 (define-abbrev f90-mode-abbrev-table "`ab" "allocateable" nil)
548 (define-abbrev f90-mode-abbrev-table "`as" "assignment" nil)
549 (define-abbrev f90-mode-abbrev-table "`ba" "backspace" nil)
550 (define-abbrev f90-mode-abbrev-table "`bd" "block data" nil)
551 (define-abbrev f90-mode-abbrev-table "`c" "character" nil)
552 (define-abbrev f90-mode-abbrev-table "`cl" "close" nil)
553 (define-abbrev f90-mode-abbrev-table "`cm" "common" nil)
554 (define-abbrev f90-mode-abbrev-table "`cx" "complex" nil)
555 (define-abbrev f90-mode-abbrev-table "`cn" "contains" nil)
556 (define-abbrev f90-mode-abbrev-table "`cy" "cycle" nil)
557 (define-abbrev f90-mode-abbrev-table "`de" "deallocate" nil)
558 (define-abbrev f90-mode-abbrev-table "`df" "define" nil)
559 (define-abbrev f90-mode-abbrev-table "`di" "dimension" nil)
560 (define-abbrev f90-mode-abbrev-table "`dw" "do while" nil)
561 (define-abbrev f90-mode-abbrev-table "`el" "else" nil)
562 (define-abbrev f90-mode-abbrev-table "`eli" "else if" nil)
563 (define-abbrev f90-mode-abbrev-table "`elw" "elsewhere" nil)
564 (define-abbrev f90-mode-abbrev-table "`eq" "equivalence" nil)
565 (define-abbrev f90-mode-abbrev-table "`ex" "external" nil)
566 (define-abbrev f90-mode-abbrev-table "`ey" "entry" nil)
567 (define-abbrev f90-mode-abbrev-table "`fl" "forall" nil)
568 (define-abbrev f90-mode-abbrev-table "`fo" "format" nil)
569 (define-abbrev f90-mode-abbrev-table "`fu" "function" nil)
570 (define-abbrev f90-mode-abbrev-table "`fa" ".false." nil)
571 (define-abbrev f90-mode-abbrev-table "`im" "implicit none" nil)
572 (define-abbrev f90-mode-abbrev-table "`in " "include" nil)
573 (define-abbrev f90-mode-abbrev-table "`i" "integer" nil)
574 (define-abbrev f90-mode-abbrev-table "`it" "intent" nil)
575 (define-abbrev f90-mode-abbrev-table "`if" "interface" nil)
576 (define-abbrev f90-mode-abbrev-table "`lo" "logical" nil)
577 (define-abbrev f90-mode-abbrev-table "`mo" "module" nil)
578 (define-abbrev f90-mode-abbrev-table "`na" "namelist" nil)
579 (define-abbrev f90-mode-abbrev-table "`nu" "nullify" nil)
580 (define-abbrev f90-mode-abbrev-table "`op" "optional" nil)
581 (define-abbrev f90-mode-abbrev-table "`pa" "parameter" nil)
582 (define-abbrev f90-mode-abbrev-table "`po" "pointer" nil)
583 (define-abbrev f90-mode-abbrev-table "`pr" "print" nil)
584 (define-abbrev f90-mode-abbrev-table "`pi" "private" nil)
585 (define-abbrev f90-mode-abbrev-table "`pm" "program" nil)
586 (define-abbrev f90-mode-abbrev-table "`pu" "public" nil)
587 (define-abbrev f90-mode-abbrev-table "`r" "real" nil)
588 (define-abbrev f90-mode-abbrev-table "`rc" "recursive" nil)
589 (define-abbrev f90-mode-abbrev-table "`rt" "return" nil)
590 (define-abbrev f90-mode-abbrev-table "`rw" "rewind" nil)
591 (define-abbrev f90-mode-abbrev-table "`se" "select" nil)
592 (define-abbrev f90-mode-abbrev-table "`sq" "sequence" nil)
593 (define-abbrev f90-mode-abbrev-table "`su" "subroutine" nil)
594 (define-abbrev f90-mode-abbrev-table "`ta" "target" nil)
595 (define-abbrev f90-mode-abbrev-table "`tr" ".true." nil)
596 (define-abbrev f90-mode-abbrev-table "`t" "type" nil)
597 (define-abbrev f90-mode-abbrev-table "`wh" "where" nil)
598 (define-abbrev f90-mode-abbrev-table "`wr" "write" nil)
599 (setq abbrevs-changed ac)))
600\f
601;;;###autoload
602(defun f90-mode ()
603 "Major mode for editing Fortran 90 code in free format.
604
605\\[f90-indent-new-line] corrects current indentation and creates new\
606 indented line.
607\\[f90-indent-line] indents the current line correctly.
608\\[f90-indent-subprogram] indents the current subprogram.
609
610Type `? or `\\[help-command] to display a list of built-in\
611 abbrevs for F90 keywords.
612
613Key definitions:
614\\{f90-mode-map}
615
616Variables controlling indentation style and extra features:
617
618 f90-do-indent
619 Extra indentation within do blocks. (default 3)
620 f90-if-indent
621 Extra indentation within if/select case/where/forall blocks. (default 3)
622 f90-type-indent
623 Extra indentation within type/interface/block-data blocks. (default 3)
624 f90-program-indent
625 Extra indentation within program/module/subroutine/function blocks.
626 (default 2)
627 f90-continuation-indent
628 Extra indentation applied to continuation lines. (default 5)
629 f90-comment-region
630 String inserted by \\[f90-comment-region] at start of each line in
631 region. (default \"!!!$\")
632 f90-indented-comment
633 String holding the type of comment to be intended like code.
634 This is a regular expression. (default \"!\")
635 f90-directive-comment
636 String of comment-like directive like \"!HPF$\", not to be indented.
637 (default nil)
638 f90-break-delimiters
639 Regexp holding list of delimiters at which lines may be broken.
640 (default \"[-+*/><=,% \\t]\")
641 f90-break-before-delimiters
642 Non-nil causes `f90-do-auto-fill' to break lines before delimiters.
643 (default t)
644 f90-beginning-ampersand
645 Automatic insertion of \& at beginning of continuation lines. (default t)
646 f90-smart-end
647 From an END statement, check and fill the end using matching block start.
648 Allowed values are 'blink, 'no-blink, and nil, which determine
649 whether to blink the matching beginning.) (default 'blink)
650 f90-auto-keyword-case
651 Automatic change of case of keywords. (default nil)
652 The possibilities are 'downcase-word, 'upcase-word, 'capitalize-word.
653 f90-auto-hilit19 (default nil)
654 Automatic highlighting (if hilit19 is used) at every indent or newline.
655 f90-leave-line-no
656 Do not left-justify line numbers. (default nil)
657 f90-startup-message
658 Set to nil to inhibit message first time F90 mode is used. (default t)
659 f90-keywords
660 List of keywords used for highlighting/upcase-keywords etc.
661
662Turning on F90 mode calls the value of the variable `f90-mode-hook'
663with no args, if that value is non-nil."
664 (interactive)
665 (kill-all-local-variables)
666 (setq major-mode 'f90-mode)
667 (setq mode-name "F90")
668 (setq local-abbrev-table f90-mode-abbrev-table)
669 (set-syntax-table f90-mode-syntax-table)
670 (use-local-map f90-mode-map)
671 (make-local-variable 'indent-line-function)
672 (setq indent-line-function 'f90-indent-line)
673 (make-local-variable 'indent-region-function)
674 (setq indent-region-function 'f90-indent-region)
675 (make-local-variable 'require-final-newline)
676 (setq require-final-newline t)
677 (make-local-variable 'comment-start)
678 (setq comment-start "!")
679 (make-local-variable 'comment-start-skip)
680 (setq comment-start-skip "!+ *")
681 (make-local-variable 'comment-indent-function)
682 (setq comment-indent-function 'f90-comment-indent)
683 (make-local-variable 'abbrev-all-caps)
684 (setq abbrev-all-caps t)
685 ;; Setting up things for font-lock
686 (if (string-match "Lucid" emacs-version)
687 (put 'f90-mode 'font-lock-keywords-case-fold-search t)
688 ;; (make-local-variable 'font-lock-keywords) ; for FSF version <= 19.28
689 ;; (setq font-lock-keywords f90-font-lock-keywords)
690 (make-local-variable 'font-lock-defaults) ; for FSF version > 19.28
691 (setq font-lock-defaults '(f90-font-lock-keywords t))
692 )
693 (make-local-variable 'font-lock-keywords-case-fold-search)
694 (setq font-lock-keywords-case-fold-search t)
695 (run-hooks 'f90-mode-hook)
696 (if f90-startup-message
697 (message "Emacs F90 mode %s. Bugs to %s" f90-mode-version bug-f90-mode))
698 (setq f90-startup-message nil))
699\f
700;; inline-functions
701(defsubst f90-get-beg-of-line ()
702 (save-excursion (beginning-of-line) (point)))
703
704(defsubst f90-get-end-of-line ()
705 (save-excursion (end-of-line) (point)))
706
707(defsubst f90-in-string ()
708 (let ((beg-pnt
709 (if (and f90-cache-position (> (point) f90-cache-position))
710 f90-cache-position
711 (point-min))))
712 (nth 3 (parse-partial-sexp beg-pnt (point)))))
713
714(defsubst f90-in-comment ()
715 (let ((beg-pnt
716 (if (and f90-cache-position (> (point) f90-cache-position))
717 f90-cache-position
718 (point-min))))
719 (nth 4 (parse-partial-sexp beg-pnt (point)))))
720
721(defsubst f90-line-continued ()
722 (save-excursion
723 (let ((bol (f90-get-beg-of-line)))
724 (end-of-line)
725 (while (f90-in-comment)
726 (search-backward "!" bol)
727 (skip-chars-backward "!"))
728 (skip-chars-backward " \t")
729 (= (preceding-char) ?&))))
730
731(defsubst f90-current-indentation ()
732 "Return indentation of current line.
733Line-numbers are considered whitespace characters."
734 (save-excursion
735 (beginning-of-line) (skip-chars-forward " \t0-9")
736 (current-column)))
737
738(defsubst f90-indent-to (col &optional no-line-number)
739 "Indent current line to column COL.
740If no-line-number nil, jump over a possible line-number."
741 (beginning-of-line)
742 (if (not no-line-number)
743 (skip-chars-forward " \t0-9"))
744 (delete-horizontal-space)
745 (if (zerop (current-column))
746 (indent-to col)
747 (indent-to col 1)))
748
749(defsubst f90-match-piece (arg)
750 (if (match-beginning arg)
751 (buffer-substring (match-beginning arg) (match-end arg))))
752
753(defsubst f90-get-present-comment-type ()
754 (save-excursion
755 (let ((type nil) (eol (f90-get-end-of-line)))
756 (if (f90-in-comment)
757 (progn
758 (beginning-of-line)
759 (re-search-forward "[!]+" eol)
760 (while (f90-in-string)
761 (re-search-forward "[!]+" eol))
762 (setq type (buffer-substring (match-beginning 0) (match-end 0)))))
763 type)))
764
765(defsubst f90-equal-symbols (a b)
766 "Compare strings neglecting case and allowing for nil value."
767 (let ((a-local (if a (downcase a) nil))
768 (b-local (if b (downcase b) nil)))
769 (equal a-local b-local)))
770
771;; There seems to be a bug in XEmacs matching of regular expressions.
772;; One cannot extract the label directly for do,if, and select case.
773;; Therefore, the following functions are longer than necessary.
774
775(defsubst f90-looking-at-do ()
776 "Return (\"do\" name) if a do statement starts after point.
777Name is nil if the statement has no label."
778 (let (struct (label nil))
779 (if (looking-at (concat "\\(\\(" f90-symbol-re "\\)[ \t]*\:\\)?"
780 "[ \t]*\\(do\\)\\b"))
781 (progn
782 (setq struct (f90-match-piece 3))
783 (if (looking-at (concat "\\(" f90-symbol-re "\\)[ \t]*\:"))
784 (setq label (f90-match-piece 1)))
785 (list struct label)))))
786
787(defsubst f90-looking-at-if-then ()
788 "Return (\"if\" name) if an if () then statement starts after point.
789Name is nil if the statement has no label."
790 (save-excursion
791 (let (struct (label nil))
792 (if (looking-at (concat "\\(\\(" f90-symbol-re "\\)[ \t]*\:\\)?"
793 "[ \t]*\\(if\\)\\b"))
794 (progn
795 (setq struct (f90-match-piece 3))
796 (if (looking-at (concat "\\(" f90-symbol-re "\\)[ \t]*\:"))
797 (setq label (f90-match-piece 1)))
798 (goto-char (scan-lists (point) 1 0))
799 (skip-chars-forward " \t")
800 (if (or (looking-at "then\\b")
801 (if (f90-line-continued)
802 (progn
803 (f90-next-statement)
804 (skip-chars-forward " \t0-9&")
805 (looking-at "then\\b"))))
806 (list struct label)))))))
807
808(defsubst f90-looking-at-select-case ()
809 "Return (\"select\" name) if a select-case statement starts after point.
810Name is nil if the statement has no label."
811 (let (struct (label nil))
812 (if (looking-at (concat "\\(\\(" f90-symbol-re "\\)[ \t]*\:\\)?"
813 "[ \t]*\\(select\\)[ \t]*case[ \t]*("))
814 (progn
815 (setq struct (f90-match-piece 3))
816 (if (looking-at (concat "\\(" f90-symbol-re "\\)[ \t]*\:"))
817 (setq label (f90-match-piece 1)))
818 (list struct label)))))
819
820(defsubst f90-looking-at-where-or-forall ()
821 "Return (kind nil) if where/forall...end starts after point."
822 (save-excursion
823 (let (command)
824 (if (looking-at "\\(where\\|forall\\)[ \t]*(")
825 (progn
826 (setq command (list (f90-match-piece 1) nil))
827 (goto-char (scan-lists (point) 1 0))
828 (skip-chars-forward " \t")
829 (if (looking-at "\\(!\\|$\\)")
830 command))))))
831
832(defsubst f90-looking-at-type-like ()
833 "Return (kind name) at the start of a type/interface/block-data block.
834Name is non-nil only for type."
835 (cond
836 ((looking-at (concat "\\(type\\)[ \t]+\\(" f90-symbol-re "\\)\\>"))
837 (list (f90-match-piece 1) (f90-match-piece 2)))
838 ((looking-at "\\(interface\\)\\>")
839 (list (f90-match-piece 1) nil))
840 ((looking-at "\\(block[ \t]*data\\)\\>")
841 (list (f90-match-piece 1) nil))))
842
843(defsubst f90-looking-at-program-block-start ()
844 "Return (kind name) if a program block with name name starts after point."
845 (cond
846 ((looking-at (concat "\\(program\\)[ \t]+\\(" f90-symbol-re "\\)\\b"))
847 (list (f90-match-piece 1) (f90-match-piece 2)))
848 ((and (not (looking-at "module[ \t]*procedure\\>"))
849 (looking-at (concat "\\(module\\)[ \t]+\\("
850 f90-symbol-re "\\)\\b")))
851 (list (f90-match-piece 1) (f90-match-piece 2)))
852 ((looking-at (concat "\\(recursive[ \t]*\\)?\\(subroutine\\)[ \t]+\\("
853 f90-symbol-re "\\)"))
854 (list (f90-match-piece 2) (f90-match-piece 3)))
855 ((looking-at (concat "[a-z0-9()_ \t]*\\(function\\)[ \t]+\\("
856 f90-symbol-re "\\)[ \t]*("))
857 (list (f90-match-piece 1) (f90-match-piece 2)))))
858
859(defsubst f90-looking-at-program-block-end ()
860 "Return list of type and name of end of block."
861 (if (looking-at (concat "end[ \t]*" f90-blocks-re "?\\([ \t]+\\("
862 f90-symbol-re "\\)\\)?\\>"))
863 (list (f90-match-piece 1) (f90-match-piece 3))))
864
865(defsubst f90-comment-indent ()
866 (cond ((looking-at "!!!") 0)
867 ((and f90-directive-comment
868 (looking-at (regexp-quote f90-directive-comment))) 0)
869 ((looking-at (regexp-quote f90-comment-region)) 0)
870 ((looking-at f90-indented-comment)
871 (f90-calculate-indent))
872 (t (skip-chars-backward " \t")
873 (max (if (bolp) 0 (1+ (current-column))) comment-column))))
874
875(defsubst f90-present-statement-cont ()
876 "Return continuation properties of present statement."
877 (let (pcont cont)
878 (save-excursion
879 (setq pcont (if (f90-previous-statement) (f90-line-continued) nil)))
880 (setq cont (f90-line-continued))
881 (cond ((and (not pcont) (not cont)) 'single)
882 ((and (not pcont) cont) 'begin)
883 ((and pcont (not cont)) 'end)
884 ((and pcont cont) 'middle)
885 (t (error)))))
886
887(defsubst f90-indent-line-no ()
888 (if f90-leave-line-no
889 ()
890 (if (and (not (zerop (skip-chars-forward " \t")))
891 (looking-at "[0-9]"))
892 (delete-horizontal-space)))
893 (skip-chars-forward " \t0-9"))
894
895(defsubst f90-no-block-limit ()
896 (let ((eol (f90-get-end-of-line)))
897 (save-excursion
898 (not (or (looking-at "end")
899 (looking-at "\\(do\\|if\\|else\\|select[ \t]*case\\|\
900case\\|where\\|forall\\)\\>")
901 (looking-at "\\(program\\|module\\|interface\\|\
902block[ \t]*data\\)\\>")
903 (looking-at "\\(contains\\|continue\\|\\sw+[ \t]*:\\)")
904 (looking-at "type[ \t]+\\sw+")
905 (re-search-forward "\\(function\\|subroutine\\)" eol t))))))
906
907(defsubst f90-update-line ()
908 (let (bol eol)
909 (if (or f90-auto-keyword-case f90-auto-hilit19)
910 (progn (setq bol (f90-get-beg-of-line)
911 eol (f90-get-end-of-line))
912 (if f90-auto-keyword-case
913 (f90-change-keywords f90-auto-keyword-case bol eol))
914 (if (and f90-auto-hilit19 (fboundp 'hilit-rehighlight-region))
915 (hilit-rehighlight-region bol eol t))))))
916\f
917(defun f90-get-correct-indent ()
918 "Get correct indent for a line starting with line number.
919Does not check type and subprogram indentation."
920 (let ((epnt (f90-get-end-of-line)) icol cont)
921 (save-excursion
922 (while (and (f90-previous-statement)
923 (or (progn
924 (setq cont (f90-present-statement-cont))
925 (or (eq cont 'end) (eq cont 'middle)))
926 (looking-at "[ \t]*[0-9]"))))
927 (setq icol (current-indentation))
928 (beginning-of-line)
929 (if (re-search-forward "\\(if\\|do\\|select\\|where\\|forall\\)"
930 (f90-get-end-of-line) t)
931 (progn
932 (beginning-of-line) (skip-chars-forward " \t")
933 (cond ((f90-looking-at-do)
934 (setq icol (+ icol f90-do-indent)))
935 ((or (f90-looking-at-if-then)
936 (f90-looking-at-where-or-forall)
937 (f90-looking-at-select-case))
938 (setq icol (+ icol f90-if-indent))))
939 (end-of-line)))
940 (while (re-search-forward
941 "\\(if\\|do\\|select\\|where\\|forall\\|continue\\)" epnt t)
942 (beginning-of-line) (skip-chars-forward " \t0-9")
943 (cond ((f90-looking-at-do)
944 (setq icol (+ icol f90-do-indent)))
945 ((or (f90-looking-at-if-then)
946 (f90-looking-at-where-or-forall)
947 (f90-looking-at-select-case))
948 (setq icol (+ icol f90-if-indent)))
949 ((looking-at f90-end-if-re)
950 (setq icol (- icol f90-if-indent)))
951 ((looking-at "\\(end[ \t]*do\\|continue\\)\\>")
952 (setq icol (- icol f90-do-indent))))
953 (end-of-line))
954 icol)))
955
956
957(defun f90-calculate-indent ()
958 "Calculate the indent column based on previous statements."
959 (interactive)
960 (let (icol cont (case-fold-search t) (pnt (point)))
961 (save-excursion
962 (if (not (f90-previous-statement))
963 (setq icol 0)
964 (setq cont (f90-present-statement-cont))
965 (if (eq cont 'end)
966 (while (not (eq 'begin (f90-present-statement-cont)))
967 (f90-previous-statement)))
968 (cond ((eq cont 'begin)
969 (setq icol (+ (f90-current-indentation)
970 f90-continuation-indent)))
971 ((eq cont 'middle) (setq icol(current-indentation)))
972 (t (setq icol (f90-current-indentation))
973 (skip-chars-forward " \t")
974 (if (looking-at "[0-9]")
975 (setq icol (f90-get-correct-indent))
976 (cond ((or (f90-looking-at-if-then)
977 (f90-looking-at-where-or-forall)
978 (f90-looking-at-select-case)
979 (looking-at f90-else-like-re))
980 (setq icol (+ icol f90-if-indent)))
981 ((f90-looking-at-do)
982 (setq icol (+ icol f90-do-indent)))
983 ((f90-looking-at-type-like)
984 (setq icol (+ icol f90-type-indent)))
985 ((or (f90-looking-at-program-block-start)
986 (looking-at "contains[ \t]*\\($\\|!\\)"))
987 (setq icol (+ icol f90-program-indent)))))
988 (goto-char pnt)
989 (beginning-of-line)
990 (cond ((looking-at "[ \t]*$"))
991 ((looking-at "[ \t]*#") ; Check for cpp directive.
992 (setq icol 0))
993 (t
994 (skip-chars-forward " \t0-9")
995 (cond ((or (looking-at f90-else-like-re)
996 (looking-at f90-end-if-re))
997 (setq icol (- icol f90-if-indent)))
998 ((looking-at "\\(end[ \t]*do\\|continue\\)\\>")
999 (setq icol (- icol f90-do-indent)))
1000 ((looking-at f90-end-type-re)
1001 (setq icol (- icol f90-type-indent)))
1002 ((or (looking-at "contains[ \t]*\\(!\\|$\\)")
1003 (f90-looking-at-program-block-end))
1004 (setq icol (- icol f90-program-indent))))))
1005 ))))
1006 icol))
1007\f
1008;; Statement = statement line, a line which is neither blank, nor a comment.
1009(defun f90-previous-statement ()
1010 "Move point to beginning of the previous F90 statement.
1011Return nil if no previous statement is found."
1012 (interactive)
1013 (let (not-first-statement)
1014 (beginning-of-line)
1015 (while (and (setq not-first-statement (zerop (forward-line -1)))
1016 (looking-at "[ \t0-9]*\\(!\\|$\\)")))
1017 not-first-statement))
1018
1019(defun f90-next-statement ()
1020 "Move point to beginning of the next F90 statement.
1021Return nil if no later statement is found."
1022 (interactive)
1023 (let (not-last-statement)
1024 (beginning-of-line)
1025 (while (and (setq not-last-statement
1026 (and (zerop (forward-line 1))
1027 (not (eobp))))
1028 (looking-at "[ \t0-9]*\\(!\\|$\\)")))
1029 not-last-statement))
1030
1031(defun f90-beginning-of-subprogram ()
1032 "Move point to the beginning of subprogram.
1033Return (type name) or nil if not found."
1034 (interactive)
1035 (let ((count 1) (case-fold-search t) matching-beg)
1036 (beginning-of-line) (skip-chars-forward " \t0-9")
1037 (if (setq matching-beg (f90-looking-at-program-block-start))
1038 (setq count (- count 1)))
1039 (while (and (not (zerop count))
1040 (re-search-backward f90-program-block-re nil 'move))
1041 (beginning-of-line) (skip-chars-forward " \t0-9")
1042 (cond
1043 ((setq matching-beg (f90-looking-at-program-block-start))
1044 (setq count (- count 1)))
1045 ((f90-looking-at-program-block-end)
1046 (setq count (+ count 1)))))
1047 (beginning-of-line)
1048 (if (zerop count)
1049 matching-beg
1050 (message "No beginning-found.")
1051 nil)))
1052
1053(defun f90-end-of-subprogram ()
1054 "Move point to the end of subprogram.
1055Return (type name) or nil if not found."
1056 (interactive)
1057 (let ((count 1) (case-fold-search t) matching-end)
1058 (beginning-of-line) (skip-chars-forward " \t0-9")
1059 (if (setq matching-end (f90-looking-at-program-block-end))
1060 (setq count (1- count)))
1061 (end-of-line)
1062 (while (and (not (zerop count))
1063 (re-search-forward f90-program-block-re nil 'move))
1064 (beginning-of-line) (skip-chars-forward " \t0-9")
1065 (cond ((f90-looking-at-program-block-start)
1066 (setq count (+ count 1)))
1067 ((setq matching-end (f90-looking-at-program-block-end))
1068 (setq count (1- count ))))
1069 (end-of-line))
1070 (forward-line 1)
1071 (if (zerop count)
1072 matching-end
1073 (message "No end found.")
1074 nil)))
1075
1076(defun f90-mark-subprogram ()
1077 "Put mark at end of F90 subprogram, point at beginning.
1078Marks are pushed and highlight (grey shadow) is turned on."
1079 (interactive)
1080 (let ((pos (point)) program)
1081 (f90-end-of-subprogram)
1082 (push-mark (point) t)
1083 (goto-char pos)
1084 (setq program (f90-beginning-of-subprogram))
1085 ;; The keywords in the preceding lists assume case-insensitivity.
1086 (if (string-match "Lucid" emacs-version)
1087 (zmacs-activate-region)
1088 (setq mark-active t)
1089 (setq deactivate-mark nil))
1090 program))
1091
1092(defun f90-comment-region (beg-region end-region)
1093 "Comment/uncomment every line in the region.
1094Insert f90-comment-region at the beginning of every line in the region
1095or, if already present, remove it."
1096 (interactive "*r")
1097 (let ((end (make-marker)))
1098 (set-marker end end-region)
1099 (goto-char beg-region)
1100 (beginning-of-line)
1101 (if (looking-at (regexp-quote f90-comment-region))
1102 (delete-region (point) (match-end 0))
1103 (insert f90-comment-region))
1104 (while (and (zerop (forward-line 1))
1105 (< (point) (marker-position end)))
1106 (if (looking-at (regexp-quote f90-comment-region))
1107 (delete-region (point) (match-end 0))
1108 (insert f90-comment-region)))
1109 (set-marker end nil)))
1110
1111(defun f90-indent-line (&optional no-update)
1112 "Indent current line as F90 code."
1113 (interactive)
1114 (let (indent (no-line-number nil) (pos (make-marker)) (case-fold-search t))
1115 (set-marker pos (point))
1116 (beginning-of-line) ; Digits after & \n are not line-no
1117 (if (save-excursion (and (f90-previous-statement) (f90-line-continued)))
1118 (progn (setq no-line-number t) (skip-chars-forward " \t"))
1119 (f90-indent-line-no))
1120 (if (looking-at "!")
1121 (setq indent (f90-comment-indent))
1122 (if (and (looking-at "end") f90-smart-end) (f90-match-end))
1123 (setq indent (f90-calculate-indent)))
1124 (if (zerop (- indent (current-column)))
1125 nil
1126 (f90-indent-to indent no-line-number))
1127 ;; If initial point was within line's indentation,
1128 ;; position after the indentation. Else stay at same point in text.
1129 (if (< (point) (marker-position pos))
1130 (goto-char (marker-position pos)))
1131 (if (not no-update) (f90-update-line))
1132 (if (and auto-fill-function
1133 (> (save-excursion (end-of-line) (current-column)) fill-column))
1134 (save-excursion (f90-do-auto-fill)))
1135 (set-marker pos nil)))
1136
1137(defun f90-indent-new-line ()
1138 "Reindent the current F90 line, insert a newline and indent the newline.
1139An abbrev before point is expanded if `abbrev-mode' is non-nil.
1140If run in the middle of a line, the line is not broken."
1141 (interactive)
1142 (let (string cont (case-fold-search t))
1143 (if abbrev-mode (expand-abbrev))
1144 (beginning-of-line) ; Reindent where likely to be needed.
1145 (f90-indent-line-no)
1146 (if (or (looking-at "\\(end\\|else\\|!\\)"))
1147 (f90-indent-line 'no-update))
1148 (end-of-line)
1149 (delete-horizontal-space) ;Destroy trailing whitespace
1150 (setq string (f90-in-string))
1151 (setq cont (f90-line-continued))
1152 (if (and string (not cont)) (insert "&"))
1153 (f90-update-line)
1154 (newline)
1155 (if (or string (and cont f90-beginning-ampersand)) (insert "&"))
1156 (f90-indent-line 'no-update)))
1157
1158
1159(defun f90-indent-region (beg-region end-region)
1160 "Indent every line in region by forward parsing."
1161 (interactive "*r")
1162 (let ((end-region-mark (make-marker)) (save-point (point-marker))
1163 (block-list nil) ind-lev ind-curr ind-b cont
1164 struct beg-struct end-struct)
1165 (set-marker end-region-mark end-region)
1166 (goto-char beg-region)
1167 ;; first find a line which is not a continuation line or comment
1168 (beginning-of-line)
1169 (while (and (looking-at "[ \t]*[0-9]*\\(!\\|[ \t]*$\\)")
1170 (progn (f90-indent-line 'no-update)
1171 (zerop (forward-line 1)))
1172 (< (point) end-region-mark)))
1173 (setq cont (f90-present-statement-cont))
1174 (while (and (or (eq cont 'middle) (eq cont 'end))
1175 (f90-previous-statement))
1176 (setq cont (f90-present-statement-cont)))
1177 ;; process present line for beginning of block
1178 (setq f90-cache-position (point))
1179 (f90-indent-line 'no-update)
1180 (setq ind-lev (f90-current-indentation))
1181 (setq ind-curr ind-lev)
1182 (beginning-of-line) (skip-chars-forward " \t0-9")
1183 (setq struct nil)
1184 (setq ind-b (cond ((setq struct (f90-looking-at-do)) f90-do-indent)
1185 ((or (setq struct (f90-looking-at-if-then))
1186 (setq struct (f90-looking-at-select-case))
1187 (setq struct (f90-looking-at-where-or-forall))
1188 (looking-at f90-else-like-re))
1189 f90-if-indent)
1190 ((setq struct (f90-looking-at-type-like))
1191 f90-type-indent)
1192 ((or(setq struct (f90-looking-at-program-block-start))
1193 (looking-at "contains[ \t]*\\($\\|!\\)"))
1194 f90-program-indent)))
1195 (if ind-b (setq ind-lev (+ ind-lev ind-b)))
1196 (if struct (setq block-list (cons struct block-list)))
1197 (while (and (f90-line-continued) (zerop (forward-line 1))
1198 (< (point) end-region-mark))
1199 (if (not (zerop (- (current-indentation)
1200 (+ ind-curr f90-continuation-indent))))
1201 (f90-indent-to (+ ind-curr f90-continuation-indent) 'no-line-no)))
1202 ;; process all following lines
1203 (while (and (zerop (forward-line 1)) (< (point) end-region-mark))
1204 (beginning-of-line)
1205 (f90-indent-line-no)
1206 (setq f90-cache-position (point))
1207 (cond ((looking-at "[ \t]*$") (setq ind-curr 0))
1208 ((looking-at "[ \t]*#") (setq ind-curr 0))
1209 ((looking-at "!") (setq ind-curr (f90-comment-indent)))
1210 ((f90-no-block-limit) (setq ind-curr ind-lev))
1211 ((looking-at f90-else-like-re) (setq ind-curr
1212 (- ind-lev f90-if-indent)))
1213 ((looking-at "contains[ \t]*\\($\\|!\\)")
1214 (setq ind-curr (- ind-lev f90-program-indent)))
1215 ((setq ind-b
1216 (cond ((setq struct (f90-looking-at-do)) f90-do-indent)
1217 ((or (setq struct (f90-looking-at-if-then))
1218 (setq struct (f90-looking-at-select-case))
1219 (setq struct (f90-looking-at-where-or-forall)))
1220 f90-if-indent)
1221 ((setq struct (f90-looking-at-type-like))
1222 f90-type-indent)
1223 ((setq struct (f90-looking-at-program-block-start))
1224 f90-program-indent)))
1225 (setq ind-curr ind-lev)
1226 (if ind-b (setq ind-lev (+ ind-lev ind-b)))
1227 (setq block-list (cons struct block-list)))
1228 ((setq end-struct (f90-looking-at-program-block-end))
1229 (setq beg-struct (car block-list)
1230 block-list (cdr block-list))
1231 (if f90-smart-end
1232 (save-excursion
1233 (f90-block-match (car beg-struct)(car (cdr beg-struct))
1234 (car end-struct)(car (cdr end-struct)))))
1235 (setq ind-b
1236 (cond ((looking-at f90-end-if-re) f90-if-indent)
1237 ((looking-at "end[ \t]*do\\>") f90-do-indent)
1238 ((looking-at f90-end-type-re) f90-type-indent)
1239 ((f90-looking-at-program-block-end)
1240 f90-program-indent)))
1241 (if ind-b (setq ind-lev (- ind-lev ind-b)))
1242 (setq ind-curr ind-lev))
1243 ((looking-at "continue\\>")
1244 (setq ind-lev (- ind-lev f90-do-indent))
1245 (setq ind-curr ind-lev)
1246 (setq block-list (cdr block-list)))
1247 (t (setq ind-curr ind-lev)))
1248 ;; do the indentation if necessary
1249 (if (not (zerop (- ind-curr (current-column))))
1250 (f90-indent-to ind-curr))
1251 (while (and (f90-line-continued) (zerop (forward-line 1))
1252 (< (point) end-region-mark))
1253 (if (not (zerop (- (current-indentation)
1254 (+ ind-curr f90-continuation-indent))))
1255 (f90-indent-to (+ ind-curr f90-continuation-indent) 'no-line-no))))
1256 ;; restore point etc
1257 (setq f90-cache-position nil)
1258 (goto-char save-point)
1259 (set-marker end-region-mark nil)
1260 (set-marker save-point nil)
1261 (if (string-match "Lucid" emacs-version)
1262 (zmacs-deactivate-region)
1263 (deactivate-mark))))
1264
1265(defun f90-indent-subprogram ()
1266 "Properly indent the subprogram which contains point."
1267 (interactive)
1268 (save-excursion
1269 (let (program)
1270 (setq program (f90-mark-subprogram))
1271 (if program
1272 (progn
1273 (message (concat "Indenting " (car program) " "
1274 (car (cdr program))"."))
1275 (f90-indent-region (point) (mark))
1276 (message (concat "Indenting " (car program) " "
1277 (car (cdr program)) "...done.")))
1278 (message "Indenting the whole file.")
1279 (f90-indent-region (point) (mark))
1280 (message (concat "Indenting the whole file...done."))))))
1281
1282;; autofill and break-line
1283(defun f90-break-line (&optional no-update)
1284 "Break line at point, insert continuation marker(s) and indent."
1285 (interactive)
1286 (let (ctype)
1287 (cond ((f90-in-string)
1288 (insert "&") (newline) (insert "&"))
1289 ((f90-in-comment)
1290 (delete-horizontal-space)
1291 (setq ctype (f90-get-present-comment-type))
1292 (newline) (insert (concat ctype " ")))
1293 (t (delete-horizontal-space)
1294 (insert "&")
1295 (if (not no-update) (f90-update-line))
1296 (newline)
1297 (if f90-beginning-ampersand (insert "& ")))))
1298 (if (not no-update) (f90-indent-line)))
1299
1300(defun f90-find-breakpoint ()
1301 "From fill-column, search backward for break-delimiter."
1302 (let ((bol (f90-get-beg-of-line)))
1303 (re-search-backward f90-break-delimiters bol)
1304 (if f90-break-before-delimiters
1305 (progn (backward-char)
1306 (if (not (looking-at f90-no-break-re))
1307 (forward-char)))
1308 (if (looking-at f90-no-break-re)
1309 (forward-char 2)
1310 (forward-char)))))
1311
1312(defun f90-auto-fill-mode (arg)
1313 "Toggle f90-auto-fill mode.
1314With ARG, turn `f90-auto-fill' mode on iff ARG is positive.
1315In `f90-auto-fill' mode, inserting a space at a column beyond `fill-column'
1316automatically breaks the line at a previous space."
1317 (interactive "P")
1318 (prog1 (setq auto-fill-function
1319 (if (if (null arg)
1320 (not auto-fill-function)
1321 (> (prefix-numeric-value arg) 0))
1322 'f90-do-auto-fill))
1323 ;; update mode-line
1324 (set-buffer-modified-p (buffer-modified-p))))
1325
1326(defun f90-do-auto-fill ()
1327 "Break line if non-white characters beyond fill-column."
1328 (interactive)
1329 ;; Break the line before or after the last delimiter (non-word char).
1330 ;; Will not break **, //, or => (specified by f90-no-break-re).
1331 (move-to-column fill-column)
1332 (if (and (looking-at "[ \t]*$") (not (f90-in-string)))
1333 (delete-horizontal-space)
1334 (f90-find-breakpoint)
1335 (f90-break-line)
1336 (end-of-line)))
1337
1338(defun f90-join-lines ()
1339 "Join present line with next line, if this line ends with \&."
1340 (interactive)
1341 (let (pos (oldpos (point)))
1342 (end-of-line)
1343 (skip-chars-backward " \t")
1344 (cond ((= (preceding-char) ?&)
1345 (delete-char -1)
1346 (setq pos (point))
1347 (forward-line 1)
1348 (skip-chars-forward " \t")
1349 (if (looking-at "\&") (delete-char 1))
1350 (delete-region pos (point))
1351 (if (not (f90-in-string))
1352 (progn (delete-horizontal-space) (insert " ")))
1353 (if (and auto-fill-function
1354 (> (save-excursion (end-of-line)
1355 (current-column))
1356 fill-column))
1357 (f90-do-auto-fill))
1358 (goto-char oldpos)
1359 t))))
1360
1361(defun f90-fill-region (beg-region end-region)
1362 "Fill every line in region by forward parsing. Join lines if possible."
1363 (interactive "*r")
1364 (let ((end-region-mark (make-marker))
1365 (f90-smart-end nil) (f90-auto-keyword-case nil)
1366 (f90-auto-hilit19 nil) indent (go-on t)
1367 (af-function auto-fill-function) (auto-fill-function nil))
1368 (set-marker end-region-mark end-region)
1369 (goto-char beg-region)
1370 (while go-on
1371 ;; join as much as possible
1372 (while (f90-join-lines));
1373 (setq indent (+ (f90-current-indentation) f90-continuation-indent))
1374 ;; chop the line if necessary
1375 (while (> (save-excursion (end-of-line) (current-column))
1376 fill-column)
1377 (move-to-column fill-column)
1378 (if (and (looking-at "[ \t]*$") (not (f90-in-string)))
1379 (delete-horizontal-space)
1380 (f90-find-breakpoint)
1381 (f90-break-line 'no-update)
1382 (f90-indent-to indent 'no-line-no)))
1383 (setq go-on (and (< (point) (marker-position end-region-mark))
1384 (zerop (forward-line 1))))
1385 (setq f90-cache-position (point)))
1386 (setq auto-fill-function af-function)
1387 (setq f90-cache-position nil)
1388 (if (string-match "Lucid" emacs-version)
1389 (zmacs-deactivate-region)
1390 (deactivate-mark))))
1391\f
1392(defun f90-block-match (beg-block beg-name end-block end-name)
1393 "Match end-struct with beg-struct and complete end-block if possible.
1394Leave point at the end of line."
1395 (search-forward "end" (f90-get-end-of-line))
1396 (catch 'no-match
1397 (if (not (f90-equal-symbols beg-block end-block))
1398 (if end-block
1399 (progn
1400 (message "END %s does not match %s." end-block beg-block)
1401 (end-of-line)
1402 (throw 'no-match nil))
1403 (message "Inserting %s." beg-block)
1404 (insert (concat " " beg-block)))
1405 (search-forward end-block))
1406 (if (not (f90-equal-symbols beg-name end-name))
1407 (cond ((and beg-name (not end-name))
1408 (message "Inserting %s." beg-name)
1409 (insert (concat " " beg-name)))
1410 ((and beg-name end-name)
1411 (message "Replacing %s with %s." end-name beg-name)
1412 (search-forward end-name)
1413 (replace-match beg-name))
1414 ((and (not beg-name) end-name)
1415 (message "Deleting %s." end-name)
1416 (search-forward end-name)
1417 (replace-match "")))
1418 (if end-name (search-forward end-name)))
1419 (if (not (looking-at "!")) (delete-horizontal-space))))
1420
1421(defun f90-match-end ()
1422 "From an end foo statement, find the corresponding foo including name."
1423 (interactive)
1424 (let ((count 1) (top-of-window (window-start)) (matching-beg nil)
1425 (end-point (point)) (case-fold-search t)
1426 beg-name end-name beg-block end-block end-struct)
1427 (if (save-excursion (beginning-of-line) (skip-chars-forward " \t0-9")
1428 (setq end-struct (f90-looking-at-program-block-end)))
1429 (progn
1430 (setq end-block (car end-struct))
1431 (setq end-name (car (cdr end-struct)))
1432 (save-excursion
1433 (beginning-of-line)
1434 (while (and (not (zerop count))
1435 (re-search-backward
1436 (concat "\\(" f90-blocks-re "\\|continue\\)") nil t))
1437 (beginning-of-line) (skip-chars-forward " \t0-9")
1438 (cond ((setq matching-beg
1439 (cond
1440 ((f90-looking-at-do))
1441 ((f90-looking-at-if-then))
1442 ((f90-looking-at-where-or-forall))
1443 ((f90-looking-at-select-case))
1444 ((f90-looking-at-type-like))
1445 ((f90-looking-at-program-block-start))))
1446 (setq count (- count 1)))
1447 ((looking-at (concat "end[ \t]*" f90-blocks-re "\\b"))
1448 (setq count (+ count 1)))
1449 ((looking-at "continue\\>") (setq count (+ count 1)))))
1450 (if (not (zerop count))
1451 (message "No matching beginning.")
1452 (f90-update-line)
1453 (if (eq f90-smart-end 'blink)
1454 (if (< (point) top-of-window)
1455 (message (concat
1456 "Matches " (what-line) ": "
1457 (buffer-substring
1458 (progn (beginning-of-line) (point))
1459 (progn (end-of-line) (point)))))
1460 (sit-for 1)))
1461 (setq beg-block (car matching-beg))
1462 (setq beg-name (car (cdr matching-beg)))
1463 (goto-char end-point)
1464 (beginning-of-line)
1465 (f90-block-match beg-block beg-name end-block end-name)))))))
1466
1467(defun f90-insert-end ()
1468 "Inserts an complete end statement matching beginning of present block."
1469 (interactive)
1470 (let ((f90-smart-end (if f90-smart-end f90-smart-end 'blink)))
1471 (insert "end")
1472 (f90-indent-new-line)))
1473\f
1474;; abbrevs and keywords
1475
1476(defun f90-abbrev-start ()
1477 "Typing `\\[help-command] or `? lists all the F90 abbrevs.
1478Any other key combination is executed normally."
1479 (interactive)
1480 (let (c)
1481 (insert last-command-char)
1482 (if (or (eq (setq c (if (string-match "Lucid" emacs-version)
1483 (event-to-character (next-command-event))
1484 (read-event)))
1485 ??) ;insert char if not equal to `?'
1486 (eq c help-char))
1487 (f90-abbrev-help)
1488 (if (string-match "Lucid" emacs-version)
1489 (setq unread-command-event c)
1490 (setq unread-command-events (list c))))))
1491
1492(defun f90-abbrev-help ()
1493 "List the currently defined abbrevs in F90 mode."
1494 (interactive)
1495 (message "Listing abbrev table...")
1496 (display-buffer (f90-prepare-abbrev-list-buffer))
1497 (message "Listing abbrev table...done"))
1498
1499(defun f90-prepare-abbrev-list-buffer ()
1500 (save-excursion
1501 (set-buffer (get-buffer-create "*Abbrevs*"))
1502 (erase-buffer)
1503 (insert-abbrev-table-description 'f90-mode-abbrev-table t)
1504 (goto-char (point-min))
1505 (set-buffer-modified-p nil)
1506 (edit-abbrevs-mode))
1507 (get-buffer-create "*Abbrevs*"))
1508
1509(defun f90-upcase-keywords ()
1510 "Upcase all F90 keywords in the buffer."
1511 (interactive)
1512 (f90-change-keywords 'upcase-word))
1513
1514(defun f90-capitalize-keywords ()
1515 "Capitalize all F90 keywords in the buffer."
1516 (interactive)
1517 (f90-change-keywords 'capitalize-word))
1518
1519(defun f90-downcase-keywords ()
1520 "Downcase all F90 keywords in the buffer."
1521 (interactive)
1522 (f90-change-keywords 'downcase-word))
1523
1524(defun f90-upcase-region-keywords (beg end)
1525 "Upcase all F90 keywords in the region."
1526 (interactive "*r")
1527 (f90-change-keywords 'upcase-word beg end))
1528
1529(defun f90-capitalize-region-keywords (beg end)
1530 "Capitalize all F90 keywords in the region."
1531 (interactive "*r")
1532 (f90-change-keywords 'capitalize-word beg end))
1533
1534(defun f90-downcase-region-keywords (beg end)
1535 "Downcase all F90 keywords in the region."
1536 (interactive "*r")
1537 (f90-change-keywords 'downcase-word beg end))
1538
1539;; Change the keywords according to argument.
1540(defun f90-change-keywords (change-word &optional beg end)
1541 (save-excursion
1542 (setq beg (if beg beg (point-min)))
1543 (setq end (if end end (point-max)))
1544 (let ((keyword-re
1545 (concat "\\<\\("
1546 (mapconcat 'identity f90-keywords "\\|") "\\|"
1547 (mapconcat 'identity f90-intrinsic-procedures"\\|") "\\|"
1548 (mapconcat 'identity f90-hpf-procedures "\\|") "\\|"
1549 (mapconcat 'identity f90-hpf-directives "\\|") "\\|"
1550 (mapconcat 'identity f90-hpf-keywords "\\|")
1551 "\\)\\>")) (ref-point (point-min)) state)
1552 (goto-char beg)
1553 (while (re-search-forward keyword-re end t)
1554 (if (progn
1555 (setq state (parse-partial-sexp ref-point (point)))
1556 (and (not (nth 3 state)) (not (nth 4 state))))
1557 (progn
1558 (setq ref-point (point))
1559 (funcall change-word -1)))))))
1560
1561(provide 'f90)
1562;;; f90.el ends here