1;;; f90.el --- Fortran-90 mode (free format) 2 3;; Copyright (C) 1995, 1996, 1997, 2000, 2001, 2002, 2003, 2004, 2005, 4;; 2006, 2007 Free Software Foundation, Inc. 5 6;; Author: Torbj\"orn Einarsson <Torbjorn.Einarsson@era.ericsson.se> 7;; Maintainer: Glenn Morris <rgm@gnu.org> 8;; Keywords: fortran, f90, languages 9 10;; This file is part of GNU Emacs. 11 12;; GNU Emacs is free software; you can redistribute it and/or modify 13;; it under the terms of the GNU General Public License as published by 14;; the Free Software Foundation; either version 2, or (at your option) 15;; any later version. 16 17;; GNU Emacs is distributed in the hope that it will be useful, 18;; but WITHOUT ANY WARRANTY; without even the implied warranty of 19;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 20;; GNU General Public License for more details. 21 22;; You should have received a copy of the GNU General Public License 23;; along with GNU Emacs; see the file COPYING. If not, write to the 24;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, 25;; Boston, MA 02110-1301, USA. 26 27;;; Commentary: 28 29;; Major mode for editing F90 programs in FREE FORMAT. 30;; The minor language revision F95 is also supported (with font-locking). 31 32;; Knows about continuation lines, named structured statements, and other 33;; features in F90 including HPF (High Performance Fortran) structures. 34;; The basic feature provides accurate indentation of F90 programs. 35;; In addition, there are many more features like automatic matching of all 36;; end statements, an auto-fill function to break long lines, a join-lines 37;; function which joins continued lines, etc. 38 39;; To facilitate typing, a fairly complete list of abbreviations is provided. 40;; All abbreviations begin with the backquote character "`" 41;; (this requires modification of the syntax-table). 42;; For example, `i expands to integer (if abbrev-mode is on). 43 44;; There are two separate features for altering the appearance of code: 45;; 1) Upcasing or capitalizing of all keywords. 46;; 2) Colors/fonts using font-lock-mode. 47;; Automatic upcase or downcase of keywords is controlled by the variable 48;; f90-auto-keyword-case. 49 50;; The indentations of lines starting with ! is determined by the first of the 51;; following matches (values in the left column are the defaults): 52 53;; start-string/regexp indent variable holding start-string/regexp 54;; !!! 0 55;; !hpf\\$ (re) 0 f90-directive-comment-re 56;; !!$ 0 f90-comment-region 57;; ! (re) as code f90-indented-comment-re 58;; default comment-column 59 60;; Ex: Here is the result of 3 different settings of f90-indented-comment-re 61;; f90-indented-comment-re !-indentation !!-indentation 62;; ! as code as code 63;; !! comment-column as code 64;; ![^!] as code comment-column 65;; Trailing comments are indented to comment-column with indent-for-comment. 66;; The function f90-comment-region toggles insertion of 67;; the variable f90-comment-region in every line of the region. 68 69;; One common convention for free vs. fixed format is that free format files 70;; have the ending .f90 or .f95 while fixed format files have the ending .f. 71;; Emacs automatically loads Fortran files in the appropriate mode based 72;; on extension. You can modify this by adjusting the variable auto-mode-alist. 73;; For example: 74;; (add-to-list 'auto-mode-alist '("\\.f\\'" . f90-mode)) 75 76;; Once you have entered f90-mode, you may get more info by using 77;; the command describe-mode (C-h m). For online help use 78;; C-h f <Name of function you want described>, or 79;; C-h v <Name of variable you want described>. 80 81;; To customize f90-mode for your taste, use, for example: 82;; (you don't have to specify values for all the parameters below) 83;; 84;;(add-hook 'f90-mode-hook 85;; ;; These are the default values. 86;; '(lambda () (setq f90-do-indent 3 87;; f90-if-indent 3 88;; f90-type-indent 3 89;; f90-program-indent 2 90;; f90-continuation-indent 5 91;; f90-comment-region "!!$" 92;; f90-directive-comment-re "!hpf\\$" 93;; f90-indented-comment-re "!" 94;; f90-break-delimiters "[-+\\*/><=,% \t]" 95;; f90-break-before-delimiters t 96;; f90-beginning-ampersand t 97;; f90-smart-end 'blink 98;; f90-auto-keyword-case nil 99;; f90-leave-line-no nil 100;; indent-tabs-mode nil 101;; f90-font-lock-keywords f90-font-lock-keywords-2 102;; ) 103;; ;; These are not default. 104;; (abbrev-mode 1) ; turn on abbreviation mode 105;; (f90-add-imenu-menu) ; extra menu with functions etc. 106;; (if f90-auto-keyword-case ; change case of all keywords on startup 107;; (f90-change-keywords f90-auto-keyword-case)) 108;; )) 109;; 110;; in your .emacs file. You can also customize the lists 111;; f90-font-lock-keywords, etc. 112;; 113;; The auto-fill and abbreviation minor modes are accessible from the F90 menu, 114;; or by using M-x auto-fill-mode and M-x abbrev-mode, respectively. 115 116;; Remarks 117;; 1) Line numbers are by default left-justified. If f90-leave-line-no is 118;; non-nil, the line numbers are never touched. 119;; 2) Multi-; statements like "do i=1,20 ; j=j+i ; end do" are not handled 120;; correctly, but I imagine them to be rare. 121;; 3) Regexps for hilit19 are no longer supported. 122;; 4) For FIXED FORMAT code, use fortran mode. 123;; 5) This mode does not work under emacs-18.x. 124;; 6) Preprocessor directives, i.e., lines starting with # are left-justified 125;; and are untouched by all case-changing commands. There is, at present, no 126;; mechanism for treating multi-line directives (continued by \ ). 127;; 7) f77 do-loops do 10 i=.. ; ; 10 continue are not correctly indented. 128;; You are urged to use f90-do loops (with labels if you wish). 129;; 8) The highlighting mode under XEmacs is not as complete as under Emacs. 130 131;; List of user commands 132;; f90-previous-statement f90-next-statement 133;; f90-beginning-of-subprogram f90-end-of-subprogram f90-mark-subprogram 134;; f90-comment-region 135;; f90-indent-line f90-indent-new-line 136;; f90-indent-region (can be called by calling indent-region) 137;; f90-indent-subprogram 138;; f90-break-line f90-join-lines 139;; f90-fill-region 140;; f90-insert-end 141;; f90-upcase-keywords f90-upcase-region-keywords 142;; f90-downcase-keywords f90-downcase-region-keywords 143;; f90-capitalize-keywords f90-capitalize-region-keywords 144;; f90-add-imenu-menu 145;; f90-font-lock-1, f90-font-lock-2, f90-font-lock-3, f90-font-lock-4 146 147;; Original author's thanks 148;; Thanks to all the people who have tested the mode. Special thanks to Jens 149;; Bloch Helmers for encouraging me to write this code, for creative 150;; suggestions as well as for the lists of hpf-commands. 151;; Also thanks to the authors of the fortran and pascal modes, on which some 152;; of this code is built. 153 154;;; Code: 155 156;; TODO 157;; Support for align. 158;; OpenMP, preprocessor highlighting. 159 160(defvar comment-auto-fill-only-comments) 161(defvar font-lock-keywords) 162 163;; User options 164 165(defgroup f90 nil 166 "Major mode for editing free format Fortran 90,95 code." 167 :link '(custom-group-link :tag "Font Lock Faces group" font-lock-faces) 168 :group 'languages) 169 170(defgroup f90-indent nil 171 "Indentation in free format Fortran." 172 :prefix "f90-" 173 :group 'f90) 174 175 176(defcustom f90-do-indent 3 177 "*Extra indentation applied to DO blocks." 178 :type 'integer 179 :group 'f90-indent) 180 181(defcustom f90-if-indent 3 182 "*Extra indentation applied to IF, SELECT CASE, WHERE and FORALL blocks." 183 :type 'integer 184 :group 'f90-indent) 185 186(defcustom f90-type-indent 3 187 "*Extra indentation applied to TYPE, INTERFACE and BLOCK DATA blocks." 188 :type 'integer 189 :group 'f90-indent) 190 191(defcustom f90-program-indent 2 192 "*Extra indentation applied to PROGRAM, MODULE, SUBROUTINE, FUNCTION blocks." 193 :type 'integer 194 :group 'f90-indent) 195 196(defcustom f90-continuation-indent 5 197 "*Extra indentation applied to continuation lines." 198 :type 'integer 199 :group 'f90-indent) 200 201(defcustom f90-comment-region "!!$" 202 "*String inserted by \\[f90-comment-region] at start of each line in region." 203 :type 'string 204 :group 'f90-indent) 205 206(defcustom f90-indented-comment-re "!" 207 "*Regexp matching comments to indent as code." 208 :type 'regexp 209 :group 'f90-indent) 210 211(defcustom f90-directive-comment-re "!hpf\\$" 212 "*Regexp of comment-like directive like \"!HPF\\\\$\", not to be indented." 213 :type 'regexp 214 :group 'f90-indent) 215 216(defcustom f90-beginning-ampersand t 217 "*Non-nil gives automatic insertion of \& at start of continuation line." 218 :type 'boolean 219 :group 'f90) 220 221(defcustom f90-smart-end 'blink 222 "*Qualification of END statements according to the matching block start. 223For example, the END that closes an IF block is changed to END 224IF. If the block has a label, this is added as well. Allowed 225values are 'blink, 'no-blink, and nil. If nil, nothing is done. 226The other two settings have the same effect, but 'blink 227additionally blinks the cursor to the start of the block." 228 :type '(choice (const blink) (const no-blink) (const nil)) 229 :group 'f90) 230 231(defcustom f90-break-delimiters "[-+\\*/><=,% \t]" 232 "*Regexp matching delimiter characters at which lines may be broken. 233There are certain tokens comprised entirely of characters 234matching this regexp that should not be split, and these are 235specified by the constant `f90-no-break-re'." 236 :type 'regexp 237 :group 'f90) 238 239(defcustom f90-break-before-delimiters t 240 "*Non-nil causes `f90-do-auto-fill' to break lines before delimiters." 241 :type 'boolean 242 :group 'f90) 243 244(defcustom f90-auto-keyword-case nil 245 "*Automatic case conversion of keywords. 246The options are 'downcase-word, 'upcase-word, 'capitalize-word and nil." 247 :type '(choice (const downcase-word) (const upcase-word) 248 (const capitalize-word) (const nil)) 249 :group 'f90) 250 251(defcustom f90-leave-line-no nil 252 "*If non-nil, line numbers are not left justified." 253 :type 'boolean 254 :group 'f90) 255 256(defcustom f90-mode-hook nil 257 "Hook run when entering F90 mode." 258 :type 'hook 259 :options '(f90-add-imenu-menu) 260 :group 'f90) 261 262;; User options end here. 263 264(defconst f90-keywords-re 265 (regexp-opt '("allocatable" "allocate" "assign" "assignment" "backspace" 266 "block" "call" "case" "character" "close" "common" "complex" 267 "contains" "continue" "cycle" "data" "deallocate" 268 "dimension" "do" "double" "else" "elseif" "elsewhere" "end" 269 "enddo" "endfile" "endif" "entry" "equivalence" "exit" 270 "external" "forall" "format" "function" "goto" "if" 271 "implicit" "include" "inquire" "integer" "intent" 272 "interface" "intrinsic" "logical" "module" "namelist" "none" 273 "nullify" "only" "open" "operator" "optional" "parameter" 274 "pause" "pointer" "precision" "print" "private" "procedure" 275 "program" "public" "read" "real" "recursive" "result" "return" 276 "rewind" "save" "select" "sequence" "stop" "subroutine" 277 "target" "then" "type" "use" "where" "while" "write" 278 ;; F95 keywords. 279 "elemental" "pure") 'words) 280 "Regexp used by the function `f90-change-keywords'.") 281 282(defconst f90-keywords-level-3-re 283 (regexp-opt 284 '("allocatable" "allocate" "assign" "assignment" "backspace" 285 "close" "deallocate" "dimension" "endfile" "entry" "equivalence" 286 "external" "inquire" "intent" "intrinsic" "nullify" "only" "open" 287 "operator" "optional" "parameter" "pause" "pointer" "print" "private" 288 "public" "read" "recursive" "result" "rewind" "save" "select" 289 "sequence" "target" "write" 290 ;; F95 keywords. 291 "elemental" "pure") 'words) 292 "Keyword-regexp for font-lock level >= 3.") 293 294(defconst f90-procedures-re 295 (concat "\\<" 296 (regexp-opt 297 '("abs" "achar" "acos" "adjustl" "adjustr" "aimag" "aint" 298 "all" "allocated" "anint" "any" "asin" "associated" 299 "atan" "atan2" "bit_size" "btest" "ceiling" "char" "cmplx" 300 "conjg" "cos" "cosh" "count" "cshift" "date_and_time" "dble" 301 "digits" "dim" "dot_product" "dprod" "eoshift" "epsilon" 302 "exp" "exponent" "floor" "fraction" "huge" "iachar" "iand" 303 "ibclr" "ibits" "ibset" "ichar" "ieor" "index" "int" "ior" 304 "ishft" "ishftc" "kind" "lbound" "len" "len_trim" "lge" "lgt" 305 "lle" "llt" "log" "log10" "logical" "matmul" "max" 306 "maxexponent" "maxloc" "maxval" "merge" "min" "minexponent" 307 "minloc" "minval" "mod" "modulo" "mvbits" "nearest" "nint" 308 "not" "pack" "precision" "present" "product" "radix" 309 ;; Real is taken out here to avoid highlighting declarations. 310 "random_number" "random_seed" "range" ;; "real" 311 "repeat" "reshape" "rrspacing" "scale" "scan" 312 "selected_int_kind" "selected_real_kind" "set_exponent" 313 "shape" "sign" "sin" "sinh" "size" "spacing" "spread" "sqrt" 314 "sum" "system_clock" "tan" "tanh" "tiny" "transfer" 315 "transpose" "trim" "ubound" "unpack" "verify" 316 ;; F95 intrinsic functions. 317 "null" "cpu_time") t) 318 ;; A left parenthesis to avoid highlighting non-procedures. 319 "[ \t]*(") 320 "Regexp whose first part matches F90 intrinsic procedures.") 321 322(defconst f90-operators-re 323 (concat "\\." 324 (regexp-opt '("and" "eq" "eqv" "false" "ge" "gt" "le" "lt" "ne" 325 "neqv" "not" "or" "true") t) 326 "\\.") 327 "Regexp matching intrinsic operators.") 328 329(defconst f90-hpf-keywords-re 330 (regexp-opt 331 ;; Intrinsic procedures. 332 '("all_prefix" "all_scatter" "all_suffix" "any_prefix" 333 "any_scatter" "any_suffix" "copy_prefix" "copy_scatter" 334 "copy_suffix" "count_prefix" "count_scatter" "count_suffix" 335 "grade_down" "grade_up" 336 "hpf_alignment" "hpf_distribution" "hpf_template" "iall" "iall_prefix" 337 "iall_scatter" "iall_suffix" "iany" "iany_prefix" "iany_scatter" 338 "iany_suffix" "ilen" "iparity" "iparity_prefix" 339 "iparity_scatter" "iparity_suffix" "leadz" "maxval_prefix" 340 "maxval_scatter" "maxval_suffix" "minval_prefix" "minval_scatter" 341 "minval_suffix" "number_of_processors" "parity" 342 "parity_prefix" "parity_scatter" "parity_suffix" "popcnt" "poppar" 343 "processors_shape" "product_prefix" "product_scatter" 344 "product_suffix" "sum_prefix" "sum_scatter" "sum_suffix" 345 ;; Directives. 346 "align" "distribute" "dynamic" "independent" "inherit" "processors" 347 "realign" "redistribute" "template" 348 ;; Keywords. 349 "block" "cyclic" "extrinsic" "new" "onto" "pure" "with") 'words) 350 "Regexp for all HPF keywords, procedures and directives.") 351 352;; Highlighting patterns. 353 354(defvar f90-font-lock-keywords-1 355 (list 356 ;; Special highlighting of "module procedure". 357 '("\\<\\(module[ \t]*procedure\\)\\>" (1 font-lock-keyword-face)) 358 ;; Highlight definition of derived type. 359 '("\\<\\(\\(?:end[ \t]*\\)?type\\)\\>\\([^()\n]*::\\)?[ \t]*\\(\\sw+\\)" 360 (1 font-lock-keyword-face) (3 font-lock-function-name-face)) 361 ;; Other functions and declarations. 362 '("\\<\\(\\(?:end[ \t]*\\)?\\(program\\|module\\|function\\|\ 363subroutine\\)\\|use\\|call\\)\\>[ \t]*\\(\\sw+\\)?" 364 (1 font-lock-keyword-face) (3 font-lock-function-name-face nil t)) 365 "\\<\\(\\(end[ \t]*\\)?\\(interface\\|block[ \t]*data\\)\\|contains\\)\\>") 366 "This does fairly subdued highlighting of comments and function calls.") 367 368(defvar f90-font-lock-keywords-2 369 (append 370 f90-font-lock-keywords-1 371 (list 372 ;; Variable declarations (avoid the real function call). 373 '("^[ \t0-9]*\\(real\\|integer\\|c\\(haracter\\|omplex\\)\\|\ 374logical\\|double[ \t]*precision\\|*type[ \t]*(\\sw+)\\)\ 375\\(.*::\\|[ \t]*(.*)\\)?\\([^&!\n]*\\)" 376 (1 font-lock-type-face t) (4 font-lock-variable-name-face t)) 377 ;; do, if, select, where, and forall constructs. 378 '("\\<\\(end[ \t]*\\(do\\|if\\|select\\|forall\\|where\\)\\)\\>\ 379\\([ \t]+\\(\\sw+\\)\\)?" 380 (1 font-lock-keyword-face) (3 font-lock-constant-face nil t)) 381 '("^[ \t0-9]*\\(\\(\\sw+\\)[ \t]*:[ \t]*\\)?\\(\\(if\\|\ 382do\\([ \t]*while\\)?\\|select[ \t]*case\\|where\\|forall\\)\\)\\>" 383 (2 font-lock-constant-face nil t) (3 font-lock-keyword-face)) 384 ;; Implicit declaration. 385 '("\\<\\(implicit\\)[ \t]*\\(real\\|integer\\|c\\(haracter\\|omplex\\)\ 386\\|logical\\|double[ \t]*precision\\|type[ \t]*(\\sw+)\\|none\\)[ \t]*" 387 (1 font-lock-keyword-face) (2 font-lock-type-face)) 388 '("\\<\\(namelist\\|common\\)[ \t]*\/\\(\\sw+\\)?\/" 389 (1 font-lock-keyword-face) (2 font-lock-constant-face nil t)) 390 "\\<else\\([ \t]*if\\|where\\)?\\>" 391 '("\\(&\\)[ \t]*\\(!\\|$\\)" (1 font-lock-keyword-face)) 392 "\\<\\(then\\|continue\\|format\\|include\\|stop\\|return\\)\\>" 393 '("\\<\\(exit\\|cycle\\)[ \t]*\\(\\sw+\\)?\\>" 394 (1 font-lock-keyword-face) (2 font-lock-constant-face nil t)) 395 '("\\<\\(case\\)[ \t]*\\(default\\|(\\)" . 1) 396 '("\\<\\(do\\|go *to\\)\\>[ \t]*\\([0-9]+\\)" 397 (1 font-lock-keyword-face) (2 font-lock-constant-face)) 398 ;; Line numbers (lines whose first character after number is letter). 399 '("^[ \t]*\\([0-9]+\\)[ \t]*[a-z]+" (1 font-lock-constant-face t)))) 400 "Highlights declarations, do-loops and other constructs.") 401 402(defvar f90-font-lock-keywords-3 403 (append f90-font-lock-keywords-2 404 (list 405 f90-keywords-level-3-re 406 f90-operators-re 407 (list f90-procedures-re '(1 font-lock-keyword-face keep)) 408 "\\<real\\>" ; avoid overwriting real defs 409 )) 410 "Highlights all F90 keywords and intrinsic procedures.") 411 412(defvar f90-font-lock-keywords-4 413 (append f90-font-lock-keywords-3 414 (list f90-hpf-keywords-re)) 415 "Highlights all F90 and HPF keywords.") 416 417(defvar f90-font-lock-keywords 418 f90-font-lock-keywords-2 419 "*Default expressions to highlight in F90 mode. 420Can be overridden by the value of `font-lock-maximum-decoration'.") 421 422 423(defvar f90-mode-syntax-table 424 (let ((table (make-syntax-table))) 425 (modify-syntax-entry ?\! "<" table) ; begin comment 426 (modify-syntax-entry ?\n ">" table) ; end comment 427 (modify-syntax-entry ?_ "w" table) ; underscore in names 428 (modify-syntax-entry ?\' "\"" table) ; string quote 429 (modify-syntax-entry ?\" "\"" table) ; string quote 430 (modify-syntax-entry ?\` "w" table) ; for abbrevs 431 (modify-syntax-entry ?\r " " table) ; return is whitespace 432 (modify-syntax-entry ?+ "." table) ; punctuation 433 (modify-syntax-entry ?- "." table) 434 (modify-syntax-entry ?= "." table) 435 (modify-syntax-entry ?* "." table) 436 (modify-syntax-entry ?/ "." table) 437 ;; I think that the f95 standard leaves the behaviour of \ 438 ;; unspecified, but that f2k will require it to be non-special. 439 ;; Use `f90-backslash-not-special' to change. 440 (modify-syntax-entry ?\\ "\\" table) ; escape chars 441 table) 442 "Syntax table used in F90 mode.") 443 444(defvar f90-mode-map 445 (let ((map (make-sparse-keymap))) 446 (define-key map "`" 'f90-abbrev-start) 447 (define-key map "\C-c;" 'f90-comment-region) 448 (define-key map "\C-\M-a" 'f90-beginning-of-subprogram) 449 (define-key map "\C-\M-e" 'f90-end-of-subprogram) 450 (define-key map "\C-\M-h" 'f90-mark-subprogram) 451 (define-key map "\C-\M-n" 'f90-end-of-block) 452 (define-key map "\C-\M-p" 'f90-beginning-of-block) 453 (define-key map "\C-\M-q" 'f90-indent-subprogram) 454 (define-key map "\C-j" 'f90-indent-new-line) ; LFD equals C-j 455 (define-key map "\r" 'newline) 456 (define-key map "\C-c\r" 'f90-break-line) 457;;; (define-key map [M-return] 'f90-break-line) 458 (define-key map "\C-c\C-a" 'f90-previous-block) 459 (define-key map "\C-c\C-e" 'f90-next-block) 460 (define-key map "\C-c\C-d" 'f90-join-lines) 461 (define-key map "\C-c\C-f" 'f90-fill-region) 462 (define-key map "\C-c\C-p" 'f90-previous-statement) 463 (define-key map "\C-c\C-n" 'f90-next-statement) 464 (define-key map "\C-c\C-w" 'f90-insert-end) 465 (define-key map "\t" 'f90-indent-line) 466 (define-key map "," 'f90-electric-insert) 467 (define-key map "+" 'f90-electric-insert) 468 (define-key map "-" 'f90-electric-insert) 469 (define-key map "*" 'f90-electric-insert) 470 (define-key map "/" 'f90-electric-insert) 471 472 (easy-menu-define f90-menu map "Menu for F90 mode." 473 `("F90" 474 ("Customization" 475 ,(custom-menu-create 'f90) 476 ["Set" Custom-set t] 477 ["Save" Custom-save t] 478 ["Reset to Current" Custom-reset-current t] 479 ["Reset to Saved" Custom-reset-saved t] 480 ["Reset to Standard Settings" Custom-reset-standard t] 481 ) 482 "--" 483 ["Indent Subprogram" f90-indent-subprogram t] 484 ["Mark Subprogram" f90-mark-subprogram t] 485 ["Beginning of Subprogram" f90-beginning-of-subprogram t] 486 ["End of Subprogram" f90-end-of-subprogram t] 487 "--" 488 ["(Un)Comment Region" f90-comment-region mark-active] 489 ["Indent Region" f90-indent-region mark-active] 490 ["Fill Region" f90-fill-region mark-active] 491 "--" 492 ["Break Line at Point" f90-break-line t] 493 ["Join with Previous Line" f90-join-lines t] 494 ["Insert Block End" f90-insert-end t] 495 "--" 496 ("Highlighting" 497 ["Toggle font-lock-mode" font-lock-mode :selected font-lock-mode 498 :style toggle] 499 "--" 500 ["Light highlighting (level 1)" f90-font-lock-1 t] 501 ["Moderate highlighting (level 2)" f90-font-lock-2 t] 502 ["Heavy highlighting (level 3)" f90-font-lock-3 t] 503 ["Maximum highlighting (level 4)" f90-font-lock-4 t] 504 ) 505 ("Change Keyword Case" 506 ["Upcase Keywords (buffer)" f90-upcase-keywords t] 507 ["Capitalize Keywords (buffer)" f90-capitalize-keywords t] 508 ["Downcase Keywords (buffer)" f90-downcase-keywords t] 509 "--" 510 ["Upcase Keywords (region)" f90-upcase-region-keywords 511 mark-active] 512 ["Capitalize Keywords (region)" f90-capitalize-region-keywords 513 mark-active] 514 ["Downcase Keywords (region)" f90-downcase-region-keywords 515 mark-active] 516 ) 517 "--" 518 ["Toggle auto-fill" auto-fill-mode :selected auto-fill-function 519 :style toggle] 520 ["Toggle abbrev-mode" abbrev-mode :selected abbrev-mode 521 :style toggle] 522 ["Add imenu Menu" f90-add-imenu-menu 523 :active (not (lookup-key (current-local-map) [menu-bar index])) 524 :included (fboundp 'imenu-add-to-menubar)])) 525 map) 526 "Keymap used in F90 mode.") 527 528 529(defun f90-font-lock-1 () 530 "Set `font-lock-keywords' to `f90-font-lock-keywords-1'." 531 (interactive) 532 (font-lock-mode 1) 533 (setq font-lock-keywords f90-font-lock-keywords-1) 534 (font-lock-fontify-buffer)) 535 536(defun f90-font-lock-2 () 537 "Set `font-lock-keywords' to `f90-font-lock-keywords-2'." 538 (interactive) 539 (font-lock-mode 1) 540 (setq font-lock-keywords f90-font-lock-keywords-2) 541 (font-lock-fontify-buffer)) 542 543(defun f90-font-lock-3 () 544 "Set `font-lock-keywords' to `f90-font-lock-keywords-3'." 545 (interactive) 546 (font-lock-mode 1) 547 (setq font-lock-keywords f90-font-lock-keywords-3) 548 (font-lock-fontify-buffer)) 549 550(defun f90-font-lock-4 () 551 "Set `font-lock-keywords' to `f90-font-lock-keywords-4'." 552 (interactive) 553 (font-lock-mode 1) 554 (setq font-lock-keywords f90-font-lock-keywords-4) 555 (font-lock-fontify-buffer)) 556 557 558;; Regexps for finding program structures. 559(defconst f90-blocks-re 560 (concat "\\(block[ \t]*data\\|" 561 (regexp-opt '("do" "if" "interface" "function" "module" "program" 562 "select" "subroutine" "type" "where" "forall")) 563 "\\)\\>") 564 "Regexp potentially indicating a \"block\" of F90 code.") 565 566(defconst f90-program-block-re 567 (regexp-opt '("program" "module" "subroutine" "function") 'paren) 568 "Regexp used to locate the start/end of a \"subprogram\".") 569 570(defconst f90-else-like-re 571 "\\(else\\([ \t]*if\\|where\\)?\\|case[ \t]*\\(default\\|(\\)\\)" 572 "Regexp matching an ELSE IF, ELSEWHERE, CASE statement.") 573 574(defconst f90-end-if-re 575 (concat "end[ \t]*" 576 (regexp-opt '("if" "select" "where" "forall") 'paren) 577 "\\>") 578 "Regexp matching the end of an IF, SELECT, WHERE, FORALL block.") 579 580(defconst f90-end-type-re 581 "end[ \t]*\\(type\\|interface\\|block[ \t]*data\\)\\>" 582 "Regexp matching the end of a TYPE, INTERFACE, BLOCK DATA section.") 583 584(defconst f90-type-def-re 585 "\\<\\(type\\)\\>\\(?:[^()\n]*::\\)?[ \t]*\\(\\sw+\\)" 586 "Regexp matching the definition of a derived type.") 587 588(defconst f90-no-break-re 589 (regexp-opt '("**" "//" "=>" ">=" "<=" "==" "/=") 'paren) 590 "Regexp specifying where not to break lines when filling. 591This regexp matches certain tokens comprised entirely of 592characters matching the regexp `f90-break-delimiters' that should 593not be split by filling. Each element is assumed to be two 594characters long.") 595 596(defvar f90-cache-position nil 597 "Temporary position used to speed up region operations.") 598(make-variable-buffer-local 'f90-cache-position) 599 600 601;; Hideshow support. 602(defconst f90-end-block-re 603 (concat "^[ \t0-9]*\\<end[ \t]*" 604 (regexp-opt '("do" "if" "forall" "function" "interface" 605 "module" "program" "select" "subroutine" 606 "type" "where" ) t) 607 "[ \t]*\\sw*") 608 "Regexp matching the end of an F90 \"block\", from the line start. 609Used in the F90 entry in `hs-special-modes-alist'.") 610 611;; Ignore the fact that FUNCTION, SUBROUTINE, WHERE, FORALL have a 612;; following "(". DO, CASE, IF can have labels. 613(defconst f90-start-block-re 614 (concat 615 "^[ \t0-9]*" ; statement number 616 "\\(\\(" 617 "\\(\\sw+[ \t]*:[ \t]*\\)?" ; structure label 618 "\\(do\\|select[ \t]*case\\|" 619 ;; See comments in fortran-start-block-re for the problems of IF. 620 "if[ \t]*(\\(.*\\|" 621 ".*\n\\([^if]*\\([^i].\\|.[^f]\\|.\\>\\)\\)\\)\\<then\\|" 622 ;; Distinguish WHERE block from isolated WHERE. 623 "\\(where\\|forall\\)[ \t]*(.*)[ \t]*\\(!\\|$\\)\\)\\)" 624 "\\|" 625 "program\\|interface\\|module\\|type\\|function\\|subroutine" 626 "\\)" 627 "[ \t]*") 628 "Regexp matching the start of an F90 \"block\", from the line start. 629A simple regexp cannot do this in fully correct fashion, so this 630tries to strike a compromise between complexity and flexibility. 631Used in the F90 entry in `hs-special-modes-alist'.") 632 633;; hs-special-modes-alist is autoloaded. 634(add-to-list 'hs-special-modes-alist 635 `(f90-mode ,f90-start-block-re ,f90-end-block-re 636 "!" f90-end-of-block nil)) 637 638 639;; Imenu support. 640(defvar f90-imenu-generic-expression 641 (let ((good-char "[^!\"\&\n \t]") (not-e "[^e!\n\"\& \t]") 642 (not-n "[^n!\n\"\& \t]") (not-d "[^d!\n\"\& \t]")) 643 (list 644 '(nil "^[ \t0-9]*program[ \t]+\\(\\sw+\\)" 1) 645 '("Modules" "^[ \t0-9]*module[ \t]+\\(\\sw+\\)[ \t]*\\(!\\|$\\)" 1) 646 '("Types" "^[ \t0-9]*type[ \t]+\\(\\sw+\\)" 1) 647 (list 648 "Procedures" 649 (concat 650 "^[ \t0-9]*" 651 "\\(" 652 ;; At least three non-space characters before function/subroutine. 653 ;; Check that the last three non-space characters do not spell E N D. 654 "[^!\"\&\n]*\\(" 655 not-e good-char good-char "\\|" 656 good-char not-n good-char "\\|" 657 good-char good-char not-d "\\)" 658 "\\|" 659 ;; Less than three non-space characters before function/subroutine. 660 good-char "?" good-char "?" 661 "\\)" 662 "[ \t]*\\(function\\|subroutine\\)[ \t]+\\(\\sw+\\)") 663 4))) 664 "Value for `imenu-generic-expression' in F90 mode.") 665 666(defun f90-add-imenu-menu () 667 "Add an imenu menu to the menubar." 668 (interactive) 669 (if (lookup-key (current-local-map) [menu-bar index]) 670 (message "%s" "F90-imenu already exists.") 671 (imenu-add-to-menubar "F90-imenu") 672 (redraw-frame (selected-frame)))) 673 674 675;; Abbrevs have generally two letters, except standard types `c, `i, `r, `t. 676(defvar f90-mode-abbrev-table 677 (progn 678 (define-abbrev-table 'f90-mode-abbrev-table nil) 679 f90-mode-abbrev-table) 680 "Abbrev table for F90 mode.") 681 682(let (abbrevs-changed) 683 ;; Use the 6th arg (SYSTEM-FLAG) of define-abbrev if possible. 684 ;; A little baroque to quieten the byte-compiler. 685 (mapcar 686 (function (lambda (element) 687 (condition-case nil 688 (apply 'define-abbrev f90-mode-abbrev-table 689 (append element '(nil 0 t))) 690 (wrong-number-of-arguments 691 (apply 'define-abbrev f90-mode-abbrev-table 692 (append element '(nil 0))))))) 693 '(("`al" "allocate" ) 694 ("`ab" "allocatable" ) 695 ("`as" "assignment" ) 696 ("`ba" "backspace" ) 697 ("`bd" "block data" ) 698 ("`c" "character" ) 699 ("`cl" "close" ) 700 ("`cm" "common" ) 701 ("`cx" "complex" ) 702 ("`cn" "contains" ) 703 ("`cy" "cycle" ) 704 ("`de" "deallocate" ) 705 ("`df" "define" ) 706 ("`di" "dimension" ) 707 ("`dp" "double precision") 708 ("`dw" "do while" ) 709 ("`el" "else" ) 710 ("`eli" "else if" ) 711 ("`elw" "elsewhere" ) 712 ("`eq" "equivalence" ) 713 ("`ex" "external" ) 714 ("`ey" "entry" ) 715 ("`fl" "forall" ) 716 ("`fo" "format" ) 717 ("`fu" "function" ) 718 ("`fa" ".false." ) 719 ("`im" "implicit none") 720 ("`in" "include" ) 721 ("`i" "integer" ) 722 ("`it" "intent" ) 723 ("`if" "interface" ) 724 ("`lo" "logical" ) 725 ("`mo" "module" ) 726 ("`na" "namelist" ) 727 ("`nu" "nullify" ) 728 ("`op" "optional" ) 729 ("`pa" "parameter" ) 730 ("`po" "pointer" ) 731 ("`pr" "print" ) 732 ("`pi" "private" ) 733 ("`pm" "program" ) 734 ("`pu" "public" ) 735 ("`r" "real" ) 736 ("`rc" "recursive" ) 737 ("`rt" "return" ) 738 ("`rw" "rewind" ) 739 ("`se" "select" ) 740 ("`sq" "sequence" ) 741 ("`su" "subroutine" ) 742 ("`ta" "target" ) 743 ("`tr" ".true." ) 744 ("`t" "type" ) 745 ("`wh" "where" ) 746 ("`wr" "write" )))) 747 748 749;;;###autoload 750(defun f90-mode () 751 "Major mode for editing Fortran 90,95 code in free format. 752For fixed format code, use `fortran-mode'. 753 754\\[f90-indent-line] indents the current line. 755\\[f90-indent-new-line] indents current line and creates a new\ 756 indented line. 757\\[f90-indent-subprogram] indents the current subprogram. 758 759Type `? or `\\[help-command] to display a list of built-in\ 760 abbrevs for F90 keywords. 761 762Key definitions: 763\\{f90-mode-map} 764 765Variables controlling indentation style and extra features: 766 767`f90-do-indent' 768 Extra indentation within do blocks (default 3). 769`f90-if-indent' 770 Extra indentation within if/select case/where/forall blocks (default 3). 771`f90-type-indent' 772 Extra indentation within type/interface/block-data blocks (default 3). 773`f90-program-indent' 774 Extra indentation within program/module/subroutine/function blocks 775 (default 2). 776`f90-continuation-indent' 777 Extra indentation applied to continuation lines (default 5). 778`f90-comment-region' 779 String inserted by function \\[f90-comment-region] at start of each 780 line in region (default \"!!!$\"). 781`f90-indented-comment-re' 782 Regexp determining the type of comment to be intended like code 783 (default \"!\"). 784`f90-directive-comment-re' 785 Regexp of comment-like directive like \"!HPF\\\\$\", not to be indented 786 (default \"!hpf\\\\$\"). 787`f90-break-delimiters' 788 Regexp holding list of delimiters at which lines may be broken 789 (default \"[-+*/><=,% \\t]\"). 790`f90-break-before-delimiters' 791 Non-nil causes `f90-do-auto-fill' to break lines before delimiters 792 (default t). 793`f90-beginning-ampersand' 794 Automatic insertion of \& at beginning of continuation lines (default t). 795`f90-smart-end' 796 From an END statement, check and fill the end using matching block start. 797 Allowed values are 'blink, 'no-blink, and nil, which determine 798 whether to blink the matching beginning (default 'blink). 799`f90-auto-keyword-case' 800 Automatic change of case of keywords (default nil). 801 The possibilities are 'downcase-word, 'upcase-word, 'capitalize-word. 802`f90-leave-line-no' 803 Do not left-justify line numbers (default nil). 804 805Turning on F90 mode calls the value of the variable `f90-mode-hook' 806with no args, if that value is non-nil." 807 (interactive) 808 (kill-all-local-variables) 809 (setq major-mode 'f90-mode 810 mode-name "F90" 811 local-abbrev-table f90-mode-abbrev-table) 812 (set-syntax-table f90-mode-syntax-table) 813 (use-local-map f90-mode-map) 814 (set (make-local-variable 'indent-line-function) 'f90-indent-line) 815 (set (make-local-variable 'indent-region-function) 'f90-indent-region) 816 (set (make-local-variable 'require-final-newline) mode-require-final-newline) 817 (set (make-local-variable 'comment-start) "!") 818 (set (make-local-variable 'comment-start-skip) "!+ *") 819 (set (make-local-variable 'comment-indent-function) 'f90-comment-indent) 820 (set (make-local-variable 'abbrev-all-caps) t) 821 (set (make-local-variable 'normal-auto-fill-function) 'f90-do-auto-fill) 822 (setq indent-tabs-mode nil) ; auto buffer local 823 (set (make-local-variable 'font-lock-defaults) 824 '((f90-font-lock-keywords f90-font-lock-keywords-1 825 f90-font-lock-keywords-2 826 f90-font-lock-keywords-3 827 f90-font-lock-keywords-4) 828 nil t)) 829 (set (make-local-variable 'imenu-case-fold-search) t) 830 (set (make-local-variable 'imenu-generic-expression) 831 f90-imenu-generic-expression) 832 (set (make-local-variable 'beginning-of-defun-function) 833 'f90-beginning-of-subprogram) 834 (set (make-local-variable 'end-of-defun-function) 'f90-end-of-subprogram) 835 (set (make-local-variable 'add-log-current-defun-function) 836 #'f90-current-defun) 837 (run-mode-hooks 'f90-mode-hook)) 838 839 840;; Inline-functions. 841(defsubst f90-in-string () 842 "Return non-nil if point is inside a string. 843Checks from `point-min', or `f90-cache-position', if that is non-nil 844and lies before point." 845 (let ((beg-pnt 846 (if (and f90-cache-position (> (point) f90-cache-position)) 847 f90-cache-position 848 (point-min)))) 849 (nth 3 (parse-partial-sexp beg-pnt (point))))) 850 851(defsubst f90-in-comment () 852 "Return non-nil if point is inside a comment. 853Checks from `point-min', or `f90-cache-position', if that is non-nil 854and lies before point." 855 (let ((beg-pnt 856 (if (and f90-cache-position (> (point) f90-cache-position)) 857 f90-cache-position 858 (point-min)))) 859 (nth 4 (parse-partial-sexp beg-pnt (point))))) 860 861(defsubst f90-line-continued () 862 "Return t if the current line is a continued one. 863This includes comment lines embedded in continued lines, but 864not the last line of a continued statement." 865 (save-excursion 866 (beginning-of-line) 867 (while (and (looking-at "[ \t]*\\(!\\|$\\)") (zerop (forward-line -1)))) 868 (end-of-line) 869 (while (f90-in-comment) 870 (search-backward "!" (line-beginning-position)) 871 (skip-chars-backward "!")) 872 (skip-chars-backward " \t") 873 (= (preceding-char) ?&))) 874 875;; GM this is not right, eg a continuation line starting with a number. 876;; Need f90-code-start-position function. 877;; And yet, things seems to work with this... 878;; cf f90-indent-line 879;; (beginning-of-line) ; digits after & \n are not line-nos 880;; (if (not (save-excursion (and (f90-previous-statement) 881;; (f90-line-continued)))) 882;; (f90-indent-line-no) 883(defsubst f90-current-indentation () 884 "Return indentation of current line. 885Line-numbers are considered whitespace characters." 886 (save-excursion (beginning-of-line) (skip-chars-forward " \t0-9"))) 887 888(defsubst f90-indent-to (col &optional no-line-number) 889 "Indent current line to column COL. 890If optional argument NO-LINE-NUMBER is nil, jump over a possible 891line-number before indenting." 892 (beginning-of-line) 893 (or no-line-number 894 (skip-chars-forward " \t0-9")) 895 (delete-horizontal-space) 896 ;; Leave >= 1 space after line number. 897 (indent-to col (if (zerop (current-column)) 0 1))) 898 899(defsubst f90-get-present-comment-type () 900 "If point lies within a comment, return the string starting the comment. 901For example, \"!\" or \"!!\", followed by the appropriate amount of 902whitespace, if any." 903 ;; Include the whitespace for consistent auto-filling of comment blocks. 904 (save-excursion 905 (when (f90-in-comment) 906 (beginning-of-line) 907 (re-search-forward "!+[ \t]*" (line-end-position)) 908 (while (f90-in-string) 909 (re-search-forward "!+[ \t]*" (line-end-position))) 910 (match-string-no-properties 0)))) 911 912(defsubst f90-equal-symbols (a b) 913 "Compare strings A and B neglecting case and allowing for nil value." 914 (equal (if a (downcase a) nil) 915 (if b (downcase b) nil))) 916 917(defsubst f90-looking-at-do () 918 "Return (\"do\" NAME) if a do statement starts after point. 919NAME is nil if the statement has no label." 920 (if (looking-at "\\(\\(\\sw+\\)[ \t]*:\\)?[ \t]*\\(do\\)\\>") 921 (list (match-string 3) (match-string 2)))) 922 923(defsubst f90-looking-at-select-case () 924 "Return (\"select\" NAME) if a select-case statement starts after point. 925NAME is nil if the statement has no label." 926 (if (looking-at "\\(\\(\\sw+\\)[ \t]*:\\)?[ \t]*\ 927\\(select\\)[ \t]*case[ \t]*(") 928 (list (match-string 3) (match-string 2)))) 929 930(defsubst f90-looking-at-if-then () 931 "Return (\"if\" NAME) if an if () then statement starts after point. 932NAME is nil if the statement has no label." 933 (save-excursion 934 (when (looking-at "\\(\\(\\sw+\\)[ \t]*:\\)?[ \t]*\\(if\\)\\>") 935 (let ((struct (match-string 3)) 936 (label (match-string 2)) 937 (pos (scan-lists (point) 1 0))) 938 (and pos (goto-char pos)) 939 (skip-chars-forward " \t") 940 (if (or (looking-at "then\\>") 941 (when (f90-line-continued) 942 (f90-next-statement) 943 (skip-chars-forward " \t0-9&") 944 (looking-at "then\\>"))) 945 (list struct label)))))) 946 947(defsubst f90-looking-at-where-or-forall () 948 "Return (KIND NAME) if a where or forall block starts after point. 949NAME is nil if the statement has no label." 950 (save-excursion 951 (when (looking-at "\\(\\(\\sw+\\)[ \t]*:\\)?[ \t]*\ 952\\(where\\|forall\\)\\>") 953 (let ((struct (match-string 3)) 954 (label (match-string 2)) 955 (pos (scan-lists (point) 1 0))) 956 (and pos (goto-char pos)) 957 (skip-chars-forward " \t") 958 (if (looking-at "\\(!\\|$\\)") (list struct label)))))) 959 960(defsubst f90-looking-at-type-like () 961 "Return (KIND NAME) if a type/interface/block-data block starts after point. 962NAME is non-nil only for type." 963 (cond 964 ((looking-at f90-type-def-re) 965 (list (match-string 1) (match-string 2))) 966 ((looking-at "\\(interface\\|block[\t]*data\\)\\>") 967 (list (match-string 1) nil)))) 968 969(defsubst f90-looking-at-program-block-start () 970 "Return (KIND NAME) if a program block with name NAME starts after point." 971;;;NAME is nil for an un-named main PROGRAM block." 972 (cond 973 ((looking-at "\\(program\\)[ \t]+\\(\\sw+\\)\\>") 974 (list (match-string 1) (match-string 2))) 975 ((and (not (looking-at "module[ \t]*procedure\\>")) 976 (looking-at "\\(module\\)[ \t]+\\(\\sw+\\)\\>")) 977 (list (match-string 1) (match-string 2))) 978 ((and (not (looking-at "end[ \t]*\\(function\\|subroutine\\)")) 979 (looking-at "[^!'\"\&\n]*\\(function\\|subroutine\\)[ \t]+\ 980\\(\\sw+\\)")) 981 (list (match-string 1) (match-string 2))))) 982;; Following will match an un-named main program block; however 983;; one needs to check if there is an actual PROGRAM statement after 984;; point (and before any END program). Adding this will require 985;; change to eg f90-calculate-indent. 986;;; ((save-excursion 987;;; (not (f90-previous-statement))) 988;;; '("program" nil)))) 989 990(defsubst f90-looking-at-program-block-end () 991 "Return (KIND NAME) if a block with name NAME ends after point." 992 (if (looking-at (concat "end[ \t]*" f90-blocks-re 993 "?\\([ \t]+\\(\\sw+\\)\\)?\\>")) 994 (list (match-string 1) (match-string 3)))) 995 996(defsubst f90-comment-indent () 997 "Return the indentation to be used for a comment starting at point. 998Used for `comment-indent-function' by F90 mode. 999\"!!!\", `f90-directive-comment-re', variable `f90-comment-region' return 0. 1000`f90-indented-comment-re' (if not trailing code) calls `f90-calculate-indent'. 1001All others return `comment-column', leaving at least one space after code." 1002 (cond ((looking-at "!!!") 0) 1003 ((and f90-directive-comment-re 1004 (looking-at f90-directive-comment-re)) 0) 1005 ((looking-at (regexp-quote f90-comment-region)) 0) 1006 ((and (looking-at f90-indented-comment-re) 1007 ;; Don't attempt to indent trailing comment as code. 1008 (save-excursion 1009 (skip-chars-backward " \t") 1010 (bolp))) 1011 (f90-calculate-indent)) 1012 (t (save-excursion 1013 (skip-chars-backward " \t") 1014 (max (if (bolp) 0 (1+ (current-column))) comment-column))))) 1015 1016(defsubst f90-present-statement-cont () 1017 "Return continuation properties of present statement. 1018Possible return values are: 1019single - statement is not continued. 1020begin - current line is the first in a continued statement. 1021end - current line is the last in a continued statement 1022middle - current line is neither first nor last in a continued statement. 1023Comment lines embedded amongst continued lines return 'middle." 1024 (let (pcont cont) 1025 (save-excursion 1026 (setq pcont (if (f90-previous-statement) (f90-line-continued)))) 1027 (setq cont (f90-line-continued)) 1028 (cond ((and (not pcont) (not cont)) 'single) 1029 ((and (not pcont) cont) 'begin) 1030 ((and pcont (not cont)) 'end) 1031 ((and pcont cont) 'middle) 1032 (t (error "The impossible occurred"))))) 1033 1034(defsubst f90-indent-line-no () 1035 "If `f90-leave-line-no' is nil, left-justify a line number. 1036Leaves point at the first non-blank character after the line number. 1037Call from beginning of line." 1038 (and (null f90-leave-line-no) (looking-at "[ \t]+[0-9]") 1039 (delete-horizontal-space)) 1040 (skip-chars-forward " \t0-9")) 1041 1042(defsubst f90-no-block-limit () 1043 "Return nil if point is at the edge of a code block. 1044Searches line forward for \"function\" or \"subroutine\", 1045if all else fails." 1046 (save-excursion 1047 (not (or (looking-at "end") 1048 (looking-at "\\(do\\|if\\|else\\(if\\|where\\)?\ 1049\\|select[ \t]*case\\|case\\|where\\|forall\\)\\>") 1050 (looking-at "\\(program\\|module\\|interface\\|\ 1051block[ \t]*data\\)\\>") 1052 (looking-at "\\(contains\\|\\sw+[ \t]*:\\)") 1053 (looking-at f90-type-def-re) 1054 (re-search-forward "\\(function\\|subroutine\\)" 1055 (line-end-position) t))))) 1056 1057(defsubst f90-update-line () 1058 "Change case of current line as per `f90-auto-keyword-case'." 1059 (if f90-auto-keyword-case 1060 (f90-change-keywords f90-auto-keyword-case 1061 (line-beginning-position) (line-end-position)))) 1062 1063(defun f90-electric-insert (&optional arg) 1064 "Change keyword case and auto-fill line as operators are inserted." 1065 (interactive "*p") 1066 (self-insert-command arg) 1067 (if auto-fill-function (f90-do-auto-fill) ; also updates line 1068 (f90-update-line))) 1069 1070 1071(defun f90-get-correct-indent () 1072 "Get correct indent for a line starting with line number. 1073Does not check type and subprogram indentation." 1074 (let ((epnt (line-end-position)) icol cont) 1075 (save-excursion 1076 (while (and (f90-previous-statement) 1077 (or (progn 1078 (setq cont (f90-present-statement-cont)) 1079 (or (eq cont 'end) (eq cont 'middle))) 1080 (looking-at "[ \t]*[0-9]")))) 1081 (setq icol (current-indentation)) 1082 (beginning-of-line) 1083 (when (re-search-forward "\\(if\\|do\\|select\\|where\\|forall\\)" 1084 (line-end-position) t) 1085 (beginning-of-line) 1086 (skip-chars-forward " \t") 1087 (cond ((f90-looking-at-do) 1088 (setq icol (+ icol f90-do-indent))) 1089 ((or (f90-looking-at-if-then) 1090 (f90-looking-at-where-or-forall) 1091 (f90-looking-at-select-case)) 1092 (setq icol (+ icol f90-if-indent)))) 1093 (end-of-line)) 1094 (while (re-search-forward 1095 "\\(if\\|do\\|select\\|where\\|forall\\)" epnt t) 1096 (beginning-of-line) 1097 (skip-chars-forward " \t0-9") 1098 (cond ((f90-looking-at-do) 1099 (setq icol (+ icol f90-do-indent))) 1100 ((or (f90-looking-at-if-then) 1101 (f90-looking-at-where-or-forall) 1102 (f90-looking-at-select-case)) 1103 (setq icol (+ icol f90-if-indent))) 1104 ((looking-at f90-end-if-re) 1105 (setq icol (- icol f90-if-indent))) 1106 ((looking-at "end[ \t]*do\\>") 1107 (setq icol (- icol f90-do-indent)))) 1108 (end-of-line)) 1109 icol))) 1110 1111(defun f90-calculate-indent () 1112 "Calculate the indent column based on previous statements." 1113 (interactive) 1114 (let (icol cont (case-fold-search t) (pnt (point))) 1115 (save-excursion 1116 (if (not (f90-previous-statement)) 1117 ;; If f90-previous-statement returns nil, we must have been 1118 ;; called from on or before the first line of the first statement. 1119 (setq icol (if (save-excursion 1120 ;; f90-previous-statement has moved us over 1121 ;; comment/blank lines, so we need to get 1122 ;; back to the first code statement. 1123 (when (looking-at "[ \t]*\\([!#]\\|$\\)") 1124 (f90-next-statement)) 1125 (skip-chars-forward " \t0-9") 1126 (f90-looking-at-program-block-start)) 1127 0 1128 ;; No explicit PROGRAM start statement. 1129 f90-program-indent)) 1130 (setq cont (f90-present-statement-cont)) 1131 (if (eq cont 'end) 1132 (while (not (eq 'begin (f90-present-statement-cont))) 1133 (f90-previous-statement))) 1134 (cond ((eq cont 'begin) 1135 (setq icol (+ (f90-current-indentation) 1136 f90-continuation-indent))) 1137 ((eq cont 'middle) (setq icol (current-indentation))) 1138 (t (setq icol (f90-current-indentation)) 1139 (skip-chars-forward " \t") 1140 (if (looking-at "[0-9]") 1141 (setq icol (f90-get-correct-indent)) 1142 (cond ((or (f90-looking-at-if-then) 1143 (f90-looking-at-where-or-forall) 1144 (f90-looking-at-select-case) 1145 (looking-at f90-else-like-re)) 1146 (setq icol (+ icol f90-if-indent))) 1147 ((f90-looking-at-do) 1148 (setq icol (+ icol f90-do-indent))) 1149 ((f90-looking-at-type-like) 1150 (setq icol (+ icol f90-type-indent))) 1151 ((or (f90-looking-at-program-block-start) 1152 (looking-at "contains[ \t]*\\($\\|!\\)")) 1153 (setq icol (+ icol f90-program-indent))))) 1154 (goto-char pnt) 1155 (beginning-of-line) 1156 (cond ((looking-at "[ \t]*$")) 1157 ((looking-at "[ \t]*#") ; check for cpp directive 1158 (setq icol 0)) 1159 (t 1160 (skip-chars-forward " \t0-9") 1161 (cond ((or (looking-at f90-else-like-re) 1162 (looking-at f90-end-if-re)) 1163 (setq icol (- icol f90-if-indent))) 1164 ((looking-at "end[ \t]*do\\>") 1165 (setq icol (- icol f90-do-indent))) 1166 ((looking-at f90-end-type-re) 1167 (setq icol (- icol f90-type-indent))) 1168 ((or (looking-at "contains[ \t]*\\(!\\|$\\)") 1169 (f90-looking-at-program-block-end)) 1170 (setq icol (- icol f90-program-indent)))))) 1171 )))) 1172 icol)) 1173 1174(defun f90-previous-statement () 1175 "Move point to beginning of the previous F90 statement. 1176If no previous statement is found (i.e. if called from the first 1177statement in the buffer), move to the start of the buffer and 1178return nil. A statement is a line which is neither blank nor a 1179comment." 1180 (interactive) 1181 (let (not-first-statement) 1182 (beginning-of-line) 1183 (while (and (setq not-first-statement (zerop (forward-line -1))) 1184 (looking-at "[ \t0-9]*\\(!\\|$\\|#\\)"))) 1185 not-first-statement)) 1186 1187(defun f90-next-statement () 1188 "Move point to beginning of the next F90 statement. 1189Return nil if no later statement is found." 1190 (interactive) 1191 (let (not-last-statement) 1192 (beginning-of-line) 1193 (while (and (setq not-last-statement 1194 (and (zerop (forward-line 1)) 1195 (not (eobp)))) 1196 (looking-at "[ \t0-9]*\\(!\\|$\\)"))) 1197 not-last-statement)) 1198 1199(defun f90-beginning-of-subprogram () 1200 "Move point to the beginning of the current subprogram. 1201Return (TYPE NAME), or nil if not found." 1202 (interactive) 1203 (let ((count 1) (case-fold-search t) matching-beg) 1204 (beginning-of-line) 1205 (while (and (> count 0) 1206 (re-search-backward f90-program-block-re nil 'move)) 1207 (beginning-of-line) 1208 (skip-chars-forward " \t0-9") 1209 (cond ((setq matching-beg (f90-looking-at-program-block-start)) 1210 (setq count (1- count))) 1211 ((f90-looking-at-program-block-end) 1212 (setq count (1+ count))))) 1213 (beginning-of-line) 1214 (if (zerop count) 1215 matching-beg 1216 ;; Note this includes the case of an un-named main program, 1217 ;; in which case we go to (point-min). 1218 (message "No beginning found.") 1219 nil))) 1220 1221(defun f90-end-of-subprogram () 1222 "Move point to the end of the current subprogram. 1223Return (TYPE NAME), or nil if not found." 1224 (interactive) 1225 (let ((case-fold-search t) 1226 (count 1) 1227 matching-end) 1228 (end-of-line) 1229 (while (and (> count 0) 1230 (re-search-forward f90-program-block-re nil 'move)) 1231 (beginning-of-line) 1232 (skip-chars-forward " \t0-9") 1233 (cond ((f90-looking-at-program-block-start) 1234 (setq count (1+ count))) 1235 ((setq matching-end (f90-looking-at-program-block-end)) 1236 (setq count (1- count)))) 1237 (end-of-line)) 1238 ;; This means f90-end-of-subprogram followed by f90-start-of-subprogram 1239 ;; has a net non-zero effect, which seems odd. 1240;;; (forward-line 1) 1241 (if (zerop count) 1242 matching-end 1243 (message "No end found.") 1244 nil))) 1245 1246 1247(defun f90-end-of-block (&optional num) 1248 "Move point forward to the end of the current code block. 1249With optional argument NUM, go forward that many balanced blocks. 1250If NUM is negative, go backward to the start of a block. Checks 1251for consistency of block types and labels (if present), and 1252completes outermost block if `f90-smart-end' is non-nil. 1253Interactively, pushes mark before moving point." 1254 (interactive "p") 1255 (if (interactive-p) (push-mark (point) t)) ; can move some distance 1256 (and num (< num 0) (f90-beginning-of-block (- num))) 1257 (let ((f90-smart-end (if f90-smart-end 'no-blink)) ; for final match-end 1258 (case-fold-search t) 1259 (count (or num 1)) 1260 start-list start-this start-type start-label end-type end-label) 1261 (end-of-line) ; probably want this 1262 (while (and (> count 0) (re-search-forward f90-blocks-re nil 'move)) 1263 (beginning-of-line) 1264 (skip-chars-forward " \t0-9") 1265 (cond ((or (f90-in-string) (f90-in-comment))) 1266 ((setq start-this 1267 (or 1268 (f90-looking-at-do) 1269 (f90-looking-at-select-case) 1270 (f90-looking-at-type-like) 1271 (f90-looking-at-program-block-start) 1272 (f90-looking-at-if-then) 1273 (f90-looking-at-where-or-forall))) 1274 (setq start-list (cons start-this start-list) ; not add-to-list! 1275 count (1+ count))) 1276 ((looking-at (concat "end[ \t]*" f90-blocks-re 1277 "[ \t]*\\(\\sw+\\)?")) 1278 (setq end-type (match-string 1) 1279 end-label (match-string 2) 1280 count (1- count)) 1281 ;; Check any internal blocks. 1282 (when start-list 1283 (setq start-this (car start-list) 1284 start-list (cdr start-list) 1285 start-type (car start-this) 1286 start-label (cadr start-this)) 1287 (or (f90-equal-symbols start-type end-type) 1288 (error "End type `%s' does not match start type `%s'" 1289 end-type start-type)) 1290 (or (f90-equal-symbols start-label end-label) 1291 (error "End label `%s' does not match start label `%s'" 1292 end-label start-label))))) 1293 (end-of-line)) 1294 (if (> count 0) (error "Missing block end")) 1295 ;; Check outermost block. 1296 (when f90-smart-end 1297 (save-excursion 1298 (beginning-of-line) 1299 (skip-chars-forward " \t0-9") 1300 (f90-match-end))))) 1301 1302(defun f90-beginning-of-block (&optional num) 1303 "Move point backwards to the start of the current code block. 1304With optional argument NUM, go backward that many balanced blocks. 1305If NUM is negative, go forward to the end of a block. 1306Checks for consistency of block types and labels (if present). 1307Does not check the outermost block, because it may be incomplete. 1308Interactively, pushes mark before moving point." 1309 (interactive "p") 1310 (if (interactive-p) (push-mark (point) t)) 1311 (and num (< num 0) (f90-end-of-block (- num))) 1312 (let ((case-fold-search t) 1313 (count (or num 1)) 1314 end-list end-this end-type end-label 1315 start-this start-type start-label) 1316 (beginning-of-line) ; probably want this 1317 (while (and (> count 0) (re-search-backward f90-blocks-re nil 'move)) 1318 (beginning-of-line) 1319 (skip-chars-forward " \t0-9") 1320 (cond ((or (f90-in-string) (f90-in-comment))) 1321 ((looking-at (concat "end[ \t]*" f90-blocks-re 1322 "[ \t]*\\(\\sw+\\)?")) 1323 (setq end-list (cons (list (match-string 1) (match-string 2)) 1324 end-list) 1325 count (1+ count))) 1326 ((setq start-this 1327 (or 1328 (f90-looking-at-do) 1329 (f90-looking-at-select-case) 1330 (f90-looking-at-type-like) 1331 (f90-looking-at-program-block-start) 1332 (f90-looking-at-if-then) 1333 (f90-looking-at-where-or-forall))) 1334 (setq start-type (car start-this) 1335 start-label (cadr start-this) 1336 count (1- count)) 1337 ;; Check any internal blocks. 1338 (when end-list 1339 (setq end-this (car end-list) 1340 end-list (cdr end-list) 1341 end-type (car end-this) 1342 end-label (cadr end-this)) 1343 (or (f90-equal-symbols start-type end-type) 1344 (error "Start type `%s' does not match end type `%s'" 1345 start-type end-type)) 1346 (or (f90-equal-symbols start-label end-label) 1347 (error "Start label `%s' does not match end label `%s'" 1348 start-label end-label)))))) 1349 ;; Includes an un-named main program block. 1350 (if (> count 0) (error "Missing block start")))) 1351 1352(defun f90-next-block (&optional num) 1353 "Move point forward to the next end or start of a code block. 1354With optional argument NUM, go forward that many blocks. 1355If NUM is negative, go backwards. 1356A block is a subroutine, if-endif, etc." 1357 (interactive "p") 1358 (let ((case-fold-search t) 1359 (count (if num (abs num) 1))) 1360 (while (and (> count 0) 1361 (if (> num 0) (re-search-forward f90-blocks-re nil 'move) 1362 (re-search-backward f90-blocks-re nil 'move))) 1363 (beginning-of-line) 1364 (skip-chars-forward " \t0-9") 1365 (cond ((or (f90-in-string) (f90-in-comment))) 1366 ((or 1367 (looking-at "end[ \t]*") 1368 (f90-looking-at-do) 1369 (f90-looking-at-select-case) 1370 (f90-looking-at-type-like) 1371 (f90-looking-at-program-block-start) 1372 (f90-looking-at-if-then) 1373 (f90-looking-at-where-or-forall)) 1374 (setq count (1- count)))) 1375 (if (> num 0) (end-of-line) 1376 (beginning-of-line))))) 1377 1378 1379(defun f90-previous-block (&optional num) 1380 "Move point backward to the previous end or start of a code block. 1381With optional argument NUM, go backward that many blocks. 1382If NUM is negative, go forwards. 1383A block is a subroutine, if-endif, etc." 1384 (interactive "p") 1385 (f90-next-block (- (or num 1)))) 1386 1387 1388(defun f90-mark-subprogram () 1389 "Put mark at end of F90 subprogram, point at beginning, push mark." 1390 (interactive) 1391 (let ((pos (point)) program) 1392 (f90-end-of-subprogram) 1393 (push-mark) 1394 (goto-char pos) 1395 (setq program (f90-beginning-of-subprogram)) 1396 (if (fboundp 'zmacs-activate-region) 1397 (zmacs-activate-region) 1398 (setq mark-active t 1399 deactivate-mark nil)) 1400 program)) 1401 1402(defun f90-comment-region (beg-region end-region) 1403 "Comment/uncomment every line in the region. 1404Insert the variable `f90-comment-region' at the start of every line 1405in the region, or, if already present, remove it." 1406 (interactive "*r") 1407 (let ((end (copy-marker end-region))) 1408 (goto-char beg-region) 1409 (beginning-of-line) 1410 (if (looking-at (regexp-quote f90-comment-region)) 1411 (delete-region (point) (match-end 0)) 1412 (insert f90-comment-region)) 1413 (while (and (zerop (forward-line 1)) 1414 (< (point) end)) 1415 (if (looking-at (regexp-quote f90-comment-region)) 1416 (delete-region (point) (match-end 0)) 1417 (insert f90-comment-region))) 1418 (set-marker end nil))) 1419 1420(defun f90-indent-line (&optional no-update) 1421 "Indent current line as F90 code. 1422Unless optional argument NO-UPDATE is non-nil, call `f90-update-line' 1423after indenting." 1424 (interactive "*P") 1425 (let ((case-fold-search t) 1426 (pos (point-marker)) 1427 indent no-line-number) 1428 (beginning-of-line) ; digits after & \n are not line-nos 1429 (if (not (save-excursion (and (f90-previous-statement) 1430 (f90-line-continued)))) 1431 (f90-indent-line-no) 1432 (setq no-line-number t) 1433 (skip-chars-forward " \t")) 1434 (if (looking-at "!") 1435 (setq indent (f90-comment-indent)) 1436 (and f90-smart-end (looking-at "end") 1437 (f90-match-end)) 1438 (setq indent (f90-calculate-indent))) 1439 (or (= indent (current-column)) 1440 (f90-indent-to indent no-line-number)) 1441 ;; If initial point was within line's indentation, 1442 ;; position after the indentation. Else stay at same point in text. 1443 (and (< (point) pos) 1444 (goto-char pos)) 1445 (if auto-fill-function 1446 ;; GM NO-UPDATE not honoured, since this calls f90-update-line. 1447 (f90-do-auto-fill) 1448 (or no-update (f90-update-line))) 1449 (set-marker pos nil))) 1450 1451(defun f90-indent-new-line () 1452 "Re-indent current line, insert a newline and indent the newline. 1453An abbrev before point is expanded if the variable `abbrev-mode' is non-nil. 1454If run in the middle of a line, the line is not broken." 1455 (interactive "*") 1456 (if abbrev-mode (expand-abbrev)) 1457 (beginning-of-line) ; reindent where likely to be needed 1458 (f90-indent-line) ; calls indent-line-no, update-line 1459 (end-of-line) 1460 (delete-horizontal-space) ; destroy trailing whitespace 1461 (let ((string (f90-in-string)) 1462 (cont (f90-line-continued))) 1463 (and string (not cont) (insert "&")) 1464 (newline) 1465 (if (or string (and cont f90-beginning-ampersand)) (insert "&"))) 1466 (f90-indent-line 'no-update)) ; nothing to update 1467 1468 1469;; TODO not add spaces to empty lines at the start. 1470;; Why is second line getting extra indent over first? 1471(defun f90-indent-region (beg-region end-region) 1472 "Indent every line in region by forward parsing." 1473 (interactive "*r") 1474 (let ((end-region-mark (copy-marker end-region)) 1475 (save-point (point-marker)) 1476 (case-fold-search t) 1477 block-list ind-lev ind-curr ind-b cont struct beg-struct end-struct) 1478 (goto-char beg-region) 1479 ;; First find a line which is not a continuation line or comment. 1480 (beginning-of-line) 1481 (while (and (looking-at "[ \t]*[0-9]*\\(!\\|#\\|[ \t]*$\\)") 1482 (progn (f90-indent-line 'no-update) 1483 (zerop (forward-line 1))) 1484 (< (point) end-region-mark))) 1485 (setq cont (f90-present-statement-cont)) 1486 (while (and (or (eq cont 'middle) (eq cont 'end)) 1487 (f90-previous-statement)) 1488 (setq cont (f90-present-statement-cont))) 1489 ;; Process present line for beginning of block. 1490 (setq f90-cache-position (point)) 1491 (f90-indent-line 'no-update) 1492 (setq ind-lev (f90-current-indentation) 1493 ind-curr ind-lev) 1494 (beginning-of-line) 1495 (skip-chars-forward " \t0-9") 1496 (setq struct nil 1497 ind-b (cond ((setq struct (f90-looking-at-do)) f90-do-indent) 1498 ((or (setq struct (f90-looking-at-if-then)) 1499 (setq struct (f90-looking-at-select-case)) 1500 (setq struct (f90-looking-at-where-or-forall)) 1501 (looking-at f90-else-like-re)) 1502 f90-if-indent) 1503 ((setq struct (f90-looking-at-type-like)) 1504 f90-type-indent) 1505 ((or (setq struct (f90-looking-at-program-block-start)) 1506 (looking-at "contains[ \t]*\\($\\|!\\)")) 1507 f90-program-indent))) 1508 (if ind-b (setq ind-lev (+ ind-lev ind-b))) 1509 (if struct (setq block-list (cons struct block-list))) 1510 (while (and (f90-line-continued) (zerop (forward-line 1)) 1511 (< (point) end-region-mark)) 1512 (if (looking-at "[ \t]*!") 1513 (f90-indent-to (f90-comment-indent)) 1514 (or (= (current-indentation) 1515 (+ ind-curr f90-continuation-indent)) 1516 (f90-indent-to (+ ind-curr f90-continuation-indent) 'no-line-no)))) 1517 ;; Process all following lines. 1518 (while (and (zerop (forward-line 1)) (< (point) end-region-mark)) 1519 (beginning-of-line) 1520 (f90-indent-line-no) 1521 (setq f90-cache-position (point)) 1522 (cond ((looking-at "[ \t]*$") (setq ind-curr 0)) 1523 ((looking-at "[ \t]*#") (setq ind-curr 0)) 1524 ((looking-at "!") (setq ind-curr (f90-comment-indent))) 1525 ((f90-no-block-limit) (setq ind-curr ind-lev)) 1526 ((looking-at f90-else-like-re) (setq ind-curr 1527 (- ind-lev f90-if-indent))) 1528 ((looking-at "contains[ \t]*\\($\\|!\\)") 1529 (setq ind-curr (- ind-lev f90-program-indent))) 1530 ((setq ind-b 1531 (cond ((setq struct (f90-looking-at-do)) f90-do-indent) 1532 ((or (setq struct (f90-looking-at-if-then)) 1533 (setq struct (f90-looking-at-select-case)) 1534 (setq struct (f90-looking-at-where-or-forall))) 1535 f90-if-indent) 1536 ((setq struct (f90-looking-at-type-like)) 1537 f90-type-indent) 1538 ((setq struct (f90-looking-at-program-block-start)) 1539 f90-program-indent))) 1540 (setq ind-curr ind-lev) 1541 (if ind-b (setq ind-lev (+ ind-lev ind-b))) 1542 (setq block-list (cons struct block-list))) 1543 ((setq end-struct (f90-looking-at-program-block-end)) 1544 (setq beg-struct (car block-list) 1545 block-list (cdr block-list)) 1546 (if f90-smart-end 1547 (save-excursion 1548 (f90-block-match (car beg-struct) (car (cdr beg-struct)) 1549 (car end-struct) (car (cdr end-struct))))) 1550 (setq ind-b 1551 (cond ((looking-at f90-end-if-re) f90-if-indent) 1552 ((looking-at "end[ \t]*do\\>") f90-do-indent) 1553 ((looking-at f90-end-type-re) f90-type-indent) 1554 ((f90-looking-at-program-block-end) 1555 f90-program-indent))) 1556 (if ind-b (setq ind-lev (- ind-lev ind-b))) 1557 (setq ind-curr ind-lev)) 1558 (t (setq ind-curr ind-lev))) 1559 ;; Do the indentation if necessary. 1560 (or (= ind-curr (current-column)) 1561 (f90-indent-to ind-curr)) 1562 (while (and (f90-line-continued) (zerop (forward-line 1)) 1563 (< (point) end-region-mark)) 1564 (if (looking-at "[ \t]*!") 1565 (f90-indent-to (f90-comment-indent)) 1566 (or (= (current-indentation) 1567 (+ ind-curr f90-continuation-indent)) 1568 (f90-indent-to 1569 (+ ind-curr f90-continuation-indent) 'no-line-no))))) 1570 ;; Restore point, etc. 1571 (setq f90-cache-position nil) 1572 (goto-char save-point) 1573 (set-marker end-region-mark nil) 1574 (set-marker save-point nil) 1575 (if (fboundp 'zmacs-deactivate-region) 1576 (zmacs-deactivate-region) 1577 (deactivate-mark)))) 1578 1579(defun f90-indent-subprogram () 1580 "Properly indent the subprogram containing point." 1581 (interactive "*") 1582 (save-excursion 1583 (let ((program (f90-mark-subprogram))) 1584 (if program 1585 (progn 1586 (message "Indenting %s %s..." 1587 (car program) (car (cdr program))) 1588 (indent-region (point) (mark) nil) 1589 (message "Indenting %s %s...done" 1590 (car program) (car (cdr program)))) 1591 (message "Indenting the whole file...") 1592 (indent-region (point) (mark) nil) 1593 (message "Indenting the whole file...done"))))) 1594 1595(defun f90-break-line (&optional no-update) 1596 "Break line at point, insert continuation marker(s) and indent. 1597Unless in a string or comment, or if the optional argument NO-UPDATE 1598is non-nil, call `f90-update-line' after inserting the continuation marker." 1599 (interactive "*P") 1600 (cond ((f90-in-string) 1601 (insert "&\n&")) 1602 ((f90-in-comment) 1603 (delete-horizontal-space 'backwards) ; remove trailing whitespace 1604 (insert "\n" (f90-get-present-comment-type))) 1605 (t (insert "&") 1606 (or no-update (f90-update-line)) 1607 (newline 1) 1608 (if f90-beginning-ampersand (insert "&")))) 1609 (indent-according-to-mode)) 1610 1611(defun f90-find-breakpoint () 1612 "From `fill-column', search backward for break-delimiter." 1613 (re-search-backward f90-break-delimiters (line-beginning-position)) 1614 (if (not f90-break-before-delimiters) 1615 (forward-char (if (looking-at f90-no-break-re) 2 1)) 1616 (backward-char) 1617 (or (looking-at f90-no-break-re) 1618 (forward-char)))) 1619 1620(defun f90-do-auto-fill () 1621 "Break line if non-white characters beyond `fill-column'. 1622Update keyword case first." 1623 (interactive "*") 1624 ;; Break line before or after last delimiter (non-word char) if 1625 ;; position is beyond fill-column. 1626 ;; Will not break **, //, or => (as specified by f90-no-break-re). 1627 (f90-update-line) 1628 ;; Need this for `f90-electric-insert' and other f90- callers. 1629 (unless (and (boundp 'comment-auto-fill-only-comments) 1630 comment-auto-fill-only-comments 1631 (not (f90-in-comment))) 1632 (while (> (current-column) fill-column) 1633 (let ((pos-mark (point-marker))) 1634 (move-to-column fill-column) 1635 (or (f90-in-string) (f90-find-breakpoint)) 1636 (f90-break-line) 1637 (goto-char pos-mark) 1638 (set-marker pos-mark nil))))) 1639 1640(defun f90-join-lines (&optional arg) 1641 "Join current line to previous, fix whitespace, continuation, comments. 1642With optional argument ARG, join current line to following line. 1643Like `join-line', but handles F90 syntax." 1644 (interactive "*P") 1645 (beginning-of-line) 1646 (if arg (forward-line 1)) 1647 (when (eq (preceding-char) ?\n) 1648 (skip-chars-forward " \t") 1649 (if (looking-at "\&") (delete-char 1)) 1650 (beginning-of-line) 1651 (delete-region (point) (1- (point))) 1652 (skip-chars-backward " \t") 1653 (and (eq (preceding-char) ?&) (delete-char -1)) 1654 (and (f90-in-comment) 1655 (looking-at "[ \t]*!+") 1656 (replace-match "")) 1657 (or (f90-in-string) 1658 (fixup-whitespace)))) 1659 1660(defun f90-fill-region (beg-region end-region) 1661 "Fill every line in region by forward parsing. Join lines if possible." 1662 (interactive "*r") 1663 (let ((end-region-mark (copy-marker end-region)) 1664 (go-on t) 1665 f90-smart-end f90-auto-keyword-case auto-fill-function) 1666 (goto-char beg-region) 1667 (while go-on 1668 ;; Join as much as possible. 1669 (while (progn 1670 (end-of-line) 1671 (skip-chars-backward " \t") 1672 (eq (preceding-char) ?&)) 1673 (f90-join-lines 'forward)) 1674 ;; Chop the line if necessary. 1675 (while (> (save-excursion (end-of-line) (current-column)) 1676 fill-column) 1677 (move-to-column fill-column) 1678 (f90-find-breakpoint) 1679 (f90-break-line 'no-update)) 1680 (setq go-on (and (< (point) end-region-mark) 1681 (zerop (forward-line 1))) 1682 f90-cache-position (point))) 1683 (setq f90-cache-position nil) 1684 (set-marker end-region-mark nil) 1685 (if (fboundp 'zmacs-deactivate-region) 1686 (zmacs-deactivate-region) 1687 (deactivate-mark)))) 1688 1689(defun f90-block-match (beg-block beg-name end-block end-name) 1690 "Match end-struct with beg-struct and complete end-block if possible. 1691BEG-BLOCK is the type of block as indicated at the start (e.g., do). 1692BEG-NAME is the block start name (may be nil). 1693END-BLOCK is the type of block as indicated at the end (may be nil). 1694END-NAME is the block end name (may be nil). 1695Leave point at the end of line." 1696 ;; Hack to deal with the case when this is called from 1697 ;; f90-indent-region on a program block without an explicit PROGRAM 1698 ;; statement at the start. Should really be an error (?). 1699 (or beg-block (setq beg-block "program")) 1700 (search-forward "end" (line-end-position)) 1701 (catch 'no-match 1702 (if (and end-block (f90-equal-symbols beg-block end-block)) 1703 (search-forward end-block) 1704 (if end-block 1705 (progn 1706 (message "END %s does not match %s." end-block beg-block) 1707 (end-of-line) 1708 (throw 'no-match nil)) 1709 (message "Inserting %s." beg-block) 1710 (insert (concat " " beg-block)))) 1711 (if (f90-equal-symbols beg-name end-name) 1712 (and end-name (search-forward end-name)) 1713 (cond ((and beg-name (not end-name)) 1714 (message "Inserting %s." beg-name) 1715 (insert (concat " " beg-name))) 1716 ((and beg-name end-name) 1717 (message "Replacing %s with %s." end-name beg-name) 1718 (search-forward end-name) 1719 (replace-match beg-name)) 1720 ((and (not beg-name) end-name) 1721 (message "Deleting %s." end-name) 1722 (search-forward end-name) 1723 (replace-match "")))) 1724 (or (looking-at "[ \t]*!") (delete-horizontal-space)))) 1725 1726(defun f90-match-end () 1727 "From an end block statement, find the corresponding block and name." 1728 (interactive) 1729 (let ((count 1) 1730 (top-of-window (window-start)) 1731 (end-point (point)) 1732 (case-fold-search t) 1733 matching-beg beg-name end-name beg-block end-block end-struct) 1734 (when (save-excursion (beginning-of-line) (skip-chars-forward " \t0-9") 1735 (setq end-struct (f90-looking-at-program-block-end))) 1736 (setq end-block (car end-struct) 1737 end-name (car (cdr end-struct))) 1738 (save-excursion 1739 (beginning-of-line) 1740 (while (and (> count 0) 1741 (not (= (line-beginning-position) (point-min)))) 1742 (re-search-backward f90-blocks-re nil 'move) 1743 (beginning-of-line) 1744 ;; GM not a line number if continued line. 1745;;; (skip-chars-forward " \t") 1746;;; (skip-chars-forward "0-9") 1747 (skip-chars-forward " \t0-9") 1748 (cond ((or (f90-in-string) (f90-in-comment))) 1749 ((setq matching-beg 1750 (or 1751 (f90-looking-at-do) 1752 (f90-looking-at-if-then) 1753 (f90-looking-at-where-or-forall) 1754 (f90-looking-at-select-case) 1755 (f90-looking-at-type-like) 1756 (f90-looking-at-program-block-start) 1757 ;; Interpret a single END without a block 1758 ;; start to be the END of a program block 1759 ;; without an initial PROGRAM line. 1760 (if (= (line-beginning-position) (point-min)) 1761 '("program" nil)))) 1762 (setq count (1- count))) 1763 ((looking-at (concat "end[ \t]*" f90-blocks-re)) 1764 (setq count (1+ count))))) 1765 (if (> count 0) 1766 (message "No matching beginning.") 1767 (f90-update-line) 1768 (if (eq f90-smart-end 'blink) 1769 (if (< (point) top-of-window) 1770 (message "Matches %s: %s" 1771 (what-line) 1772 (buffer-substring 1773 (line-beginning-position) 1774 (line-end-position))) 1775 (sit-for blink-matching-delay))) 1776 (setq beg-block (car matching-beg) 1777 beg-name (car (cdr matching-beg))) 1778 (goto-char end-point) 1779 (beginning-of-line) 1780 (f90-block-match beg-block beg-name end-block end-name)))))) 1781 1782(defun f90-insert-end () 1783 "Insert a complete end statement matching beginning of present block." 1784 (interactive "*") 1785 (let ((f90-smart-end (or f90-smart-end 'blink))) 1786 (insert "end") 1787 (f90-indent-new-line))) 1788 1789;; Abbrevs and keywords. 1790 1791(defun f90-abbrev-start () 1792 "Typing `\\[help-command] or `? lists all the F90 abbrevs. 1793Any other key combination is executed normally." 1794 (interactive "*") 1795 (insert last-command-char) 1796 (let (char event) 1797 (if (fboundp 'next-command-event) ; XEmacs 1798 (setq event (next-command-event) 1799 char (and (fboundp 'event-to-character) 1800 (event-to-character event))) 1801 (setq event (read-event) 1802 char event)) 1803 ;; Insert char if not equal to `?', or if abbrev-mode is off. 1804 (if (and abbrev-mode (or (eq char ??) (eq char help-char))) 1805 (f90-abbrev-help) 1806 (setq unread-command-events (list event))))) 1807 1808(defun f90-abbrev-help () 1809 "List the currently defined abbrevs in F90 mode." 1810 (interactive) 1811 (message "Listing abbrev table...") 1812 (display-buffer (f90-prepare-abbrev-list-buffer)) 1813 (message "Listing abbrev table...done")) 1814 1815(defun f90-prepare-abbrev-list-buffer () 1816 "Create a buffer listing the F90 mode abbreviations." 1817 (save-excursion 1818 (set-buffer (get-buffer-create "*Abbrevs*")) 1819 (erase-buffer) 1820 (insert-abbrev-table-description 'f90-mode-abbrev-table t) 1821 (goto-char (point-min)) 1822 (set-buffer-modified-p nil) 1823 (edit-abbrevs-mode)) 1824 (get-buffer-create "*Abbrevs*")) 1825 1826(defun f90-upcase-keywords () 1827 "Upcase all F90 keywords in the buffer." 1828 (interactive "*") 1829 (f90-change-keywords 'upcase-word)) 1830 1831(defun f90-capitalize-keywords () 1832 "Capitalize all F90 keywords in the buffer." 1833 (interactive "*") 1834 (f90-change-keywords 'capitalize-word)) 1835 1836(defun f90-downcase-keywords () 1837 "Downcase all F90 keywords in the buffer." 1838 (interactive "*") 1839 (f90-change-keywords 'downcase-word)) 1840 1841(defun f90-upcase-region-keywords (beg end) 1842 "Upcase all F90 keywords in the region." 1843 (interactive "*r") 1844 (f90-change-keywords 'upcase-word beg end)) 1845 1846(defun f90-capitalize-region-keywords (beg end) 1847 "Capitalize all F90 keywords in the region." 1848 (interactive "*r") 1849 (f90-change-keywords 'capitalize-word beg end)) 1850 1851(defun f90-downcase-region-keywords (beg end) 1852 "Downcase all F90 keywords in the region." 1853 (interactive "*r") 1854 (f90-change-keywords 'downcase-word beg end)) 1855 1856;; Change the keywords according to argument. 1857(defun f90-change-keywords (change-word &optional beg end) 1858 "Change the case of F90 keywords in the region (if specified) or buffer. 1859CHANGE-WORD should be one of 'upcase-word, 'downcase-word, 'capitalize-word." 1860 (save-excursion 1861 (setq beg (or beg (point-min)) 1862 end (or end (point-max))) 1863 (let ((keyword-re 1864 (concat "\\(" 1865 f90-keywords-re "\\|" f90-procedures-re "\\|" 1866 f90-hpf-keywords-re "\\|" f90-operators-re "\\)")) 1867 (ref-point (point-min)) 1868 (modified (buffer-modified-p)) 1869 state saveword back-point) 1870 (goto-char beg) 1871 (unwind-protect 1872 (while (re-search-forward keyword-re end t) 1873 (unless (progn 1874 (setq state (parse-partial-sexp ref-point (point))) 1875 (or (nth 3 state) (nth 4 state) 1876 ;; GM f90-directive-comment-re? 1877 (save-excursion ; check for cpp directive 1878 (beginning-of-line) 1879 (skip-chars-forward " \t0-9") 1880 (looking-at "#")))) 1881 (setq ref-point (point) 1882 back-point (save-excursion (backward-word 1) (point)) 1883 saveword (buffer-substring back-point ref-point)) 1884 (funcall change-word -1) 1885 (or (string= saveword (buffer-substring back-point ref-point)) 1886 (setq modified t)))) 1887 (or modified (set-buffer-modified-p nil)))))) 1888 1889 1890(defun f90-current-defun () 1891 "Function to use for `add-log-current-defun-function' in F90 mode." 1892 (save-excursion 1893 (nth 1 (f90-beginning-of-subprogram)))) 1894 1895 1896(defun f90-backslash-not-special (&optional all) 1897 "Make the backslash character (\\) be non-special in the current buffer. 1898With optional argument ALL, change the default for all present 1899and future F90 buffers. F90 mode normally treats backslash as an 1900escape character." 1901 (or (eq major-mode 'f90-mode) 1902 (error "This function should only be used in F90 buffers")) 1903 (when (equal (char-syntax ?\\ ) ?\\ ) 1904 (or all (set-syntax-table (copy-syntax-table (syntax-table)))) 1905 (modify-syntax-entry ?\\ "."))) 1906 1907 1908(provide 'f90) 1909 1910;;; arch-tag: fceac97c-c147-44bd-aec0-172d4b560ef8 1911;;; f90.el ends here 1912