lisp/progmodes/simula.el

   1 ;;; simula.el --- SIMULA 87 code editing commands for Emacs
   2
   3 ;; Copyright (C) 1992, 1994, 1996, 2001-2017 Free Software Foundation,
   4 ;; Inc.
   5
   6 ;; Author: Hans Henrik Eriksen <hhe@ifi.uio.no>
   7 ;; Maintainer: simula-mode@ifi.uio.no
   8 ;;   (above email addresses invalid as of April 2008)
   9 ;; Adapted-By: ESR
  10 ;; Keywords: languages
  11
  12 ;; This file is part of GNU Emacs.
  13
  14 ;; GNU Emacs is free software: you can redistribute it and/or modify
  15 ;; it under the terms of the GNU General Public License as published by
  16 ;; the Free Software Foundation, either version 3 of the License, or
  17 ;; (at your option) any later version.
  18
  19 ;; GNU Emacs is distributed in the hope that it will be useful,
  20 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
  21 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  22 ;; GNU General Public License for more details.
  23
  24 ;; You should have received a copy of the GNU General Public License
  25 ;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
  26
  27 ;;; Commentary:
  28
  29 ;; A major mode for editing the Simula language.  It knows about Simula
  30 ;; syntax and standard indentation commands.  It also provides convenient
  31 ;; abbrevs for Simula keywords.
  32 ;;
  33 ;; Hans Henrik Eriksen (the author) may be reached at:
  34 ;;         Institutt for informatikk,
  35 ;;         Universitetet i Oslo
  36
  37 ;;; Code:
  38
  39 \f
  40 (defgroup simula nil
  41   "Major mode for editing Simula code."
  42   :link '(custom-group-link :tag "Font Lock Faces group" font-lock-faces)
  43   :prefix "simula-"
  44   :group 'languages)
  45
  46 (defconst simula-tab-always-indent-default nil
  47   "Non-nil means TAB in SIMULA mode should always reindent the current line.
  48 Otherwise TAB indents only when point is within
  49 the run of whitespace at the beginning of the line.")
  50
  51 (defcustom simula-tab-always-indent simula-tab-always-indent-default
  52   "Non-nil means TAB in SIMULA mode should always reindent the current line.
  53 Otherwise TAB indents only when point is within
  54 the run of whitespace at the beginning of the line."
  55   :type 'boolean
  56   :group 'simula)
  57
  58 (defconst simula-indent-level-default 3
  59   "Indentation of SIMULA statements with respect to containing block.")
  60
  61 (defcustom simula-indent-level simula-indent-level-default
  62   "Indentation of SIMULA statements with respect to containing block."
  63   :type 'integer
  64   :group 'simula)
  65
  66
  67 (defconst simula-substatement-offset-default 3
  68   "Extra indentation after DO, THEN, ELSE, WHEN and OTHERWISE.")
  69
  70 (defcustom simula-substatement-offset simula-substatement-offset-default
  71   "Extra indentation after DO, THEN, ELSE, WHEN and OTHERWISE."
  72   :type 'integer
  73   :group 'simula)
  74
  75 (defconst simula-continued-statement-offset-default 3
  76   "Extra indentation for lines not starting a statement or substatement.
  77 If value is a list, each line in a multipleline continued statement
  78 will have the car of the list extra indentation with respect to
  79 the previous line of the statement.")
  80
  81 (defcustom simula-continued-statement-offset
  82   simula-continued-statement-offset-default
  83   "Extra indentation for lines not starting a statement or substatement.
  84 If value is a list, each line in a multipleline continued statement
  85 will have the car of the list extra indentation with respect to
  86 the previous line of the statement."
  87   :type 'integer
  88   :group 'simula)
  89
  90 (defconst simula-label-offset-default -4711
  91   "Offset of SIMULA label lines relative to usual indentation.")
  92
  93 (defcustom simula-label-offset simula-label-offset-default
  94   "Offset of SIMULA label lines relative to usual indentation."
  95   :type 'integer
  96   :group 'simula)
  97
  98 (defconst simula-if-indent-default '(0 . 0)
  99   "Extra indentation of THEN and ELSE with respect to the starting IF.
 100 Value is a cons cell, the car is extra THEN indentation and the cdr
 101 extra ELSE indentation.  IF after ELSE is indented as the starting IF.")
 102
 103 (defcustom simula-if-indent simula-if-indent-default
 104   "Extra indentation of THEN and ELSE with respect to the starting IF.
 105 Value is a cons cell, the car is extra THEN indentation and the cdr
 106 extra ELSE indentation.  IF after ELSE is indented as the starting IF."
 107   :type '(cons integer integer)
 108   :group 'simula)
 109
 110 (defconst simula-inspect-indent-default '(0 . 0)
 111   "Extra indentation of WHEN and OTHERWISE with respect to the INSPECT.
 112 Value is a cons cell, the car is extra WHEN indentation
 113 and the cdr extra OTHERWISE indentation.")
 114
 115 (defcustom simula-inspect-indent simula-inspect-indent-default
 116   "Extra indentation of WHEN and OTHERWISE with respect to the INSPECT.
 117 Value is a cons cell, the car is extra WHEN indentation
 118 and the cdr extra OTHERWISE indentation."
 119   :type '(cons integer integer)
 120   :group 'simula)
 121
 122 (defconst simula-electric-indent-default nil
 123   "Non-nil means `simula-indent-line' function may reindent previous line.")
 124
 125 (defcustom simula-electric-indent simula-electric-indent-default
 126   "Non-nil means `simula-indent-line' function may reindent previous line."
 127   :type 'boolean
 128   :group 'simula)
 129
 130 (defconst simula-abbrev-keyword-default 'upcase
 131   "Specify how to convert case for SIMULA keywords.
 132 Value is one of the symbols `upcase', `downcase', `capitalize',
 133 \(as in) `abbrev-table' or nil if they should not be changed.")
 134
 135 (defcustom simula-abbrev-keyword simula-abbrev-keyword-default
 136   "Specify how to convert case for SIMULA keywords.
 137 Value is one of the symbols `upcase', `downcase', `capitalize',
 138 \(as in) `abbrev-table' or nil if they should not be changed."
 139   :type '(choice (const upcase) (const downcase) (const capitalize)(const nil))
 140   :group 'simula)
 141
 142 (defconst simula-abbrev-stdproc-default 'abbrev-table
 143   "Specify how to convert case for standard SIMULA procedure and class names.
 144 Value is one of the symbols `upcase', `downcase', `capitalize',
 145 \(as in) `abbrev-table', or nil if they should not be changed.")
 146
 147 (defcustom simula-abbrev-stdproc simula-abbrev-stdproc-default
 148   "Specify how to convert case for standard SIMULA procedure and class names.
 149 Value is one of the symbols `upcase', `downcase', `capitalize',
 150 \(as in) `abbrev-table', or nil if they should not be changed."
 151   :type '(choice (const upcase) (const downcase) (const capitalize)
 152           (const abbrev-table) (const nil))
 153   :group 'simula)
 154
 155 (defcustom simula-abbrev-file nil
 156   "File with extra abbrev definitions for use in SIMULA mode.
 157 These are used together with the standard abbrev definitions for SIMULA.
 158 Please note that the standard definitions are required
 159 for SIMULA mode to function correctly."
 160   :type '(choice file (const nil))
 161   :group 'simula)
 162
 163 (defvar simula-mode-syntax-table nil
 164   "Syntax table in SIMULA mode buffers.")
 165
 166 (defconst simula-syntax-propertize-function
 167   (syntax-propertize-rules
 168    ;; `comment' directive.
 169    ("\\<\\(c\\)omment\\>" (1 "<"))
 170    ;; end comments
 171    ((concat "\\<end\\>\\([^;\n]\\).*?\\(\n\\|\\(.\\)\\(;\\|"
 172             (regexp-opt '("end" "else" "when" "otherwise"))
 173             "\\)\\)")
 174     (1 "< b")
 175     (3 "> b"))
 176    ;; non-quoted single-quote char.
 177    ("'\\('\\)'" (1 "."))))
 178
 179 ;; Regexps written with help from Alf-Ivar Holm <alfh@ifi.uio.no>.
 180 (defconst simula-font-lock-keywords-1
 181   '(;;
 182     ;; Compiler directives.
 183     ("^%\\([^ \t\n].*\\)" 1 font-lock-constant-face t)
 184     ;;
 185     ;; Class and procedure names.
 186     ("\\<\\(class\\|procedure\\)\\>[ \t]*\\(\\sw+\\)?"
 187      (1 font-lock-keyword-face) (2 font-lock-function-name-face nil t)))
 188   "Subdued level highlighting for Simula mode.")
 189
 190 (defconst simula-font-lock-keywords-2
 191   (append simula-font-lock-keywords-1
 192    (list
 193     ;;
 194     ;; Constants.
 195     '("\\<\\(false\\|none\\|notext\\|true\\)\\>" . font-lock-constant-face)
 196     ;;
 197     ;; Keywords.
 198     (regexp-opt
 199      '("activate" "after" "and" "at" "before" "begin" "delay" "do"
 200        "else" "end" "eq" "eqv" "external" "for" "ge" "go" "goto" "gt"
 201        "hidden" "if" "imp" "in" "inner" "inspect" "is" "label" "le"
 202        "lt" "ne" "new" "not" "or" "otherwise" "prior" "protected"
 203        "qua" "reactivate" "step" "switch" "then" "this" "to" "until"
 204        "virtual" "when" "while") 'words)
 205     ;;
 206     ;; Types.
 207     (cons (regexp-opt
 208            '("array" "boolean" "character" "integer"
 209              "long" "name" "real" "short" "text" "value" "ref") 'words)
 210           'font-lock-type-face)))
 211   "Medium level highlighting for Simula mode.")
 212
 213 (defconst simula-font-lock-keywords-3
 214   (append simula-font-lock-keywords-2
 215    (list
 216     ;;
 217     ;; Super-class names and super-slow.
 218     '("\\<\\(\\sw+\\)[ \t]+class\\>" 1 font-lock-function-name-face)
 219     ;;
 220     ;; Types and their declarations.
 221     (list (concat "\\<\\(array\\|boolean\\|character\\|integer\\|"
 222                   "long\\|name\\|real\\|short\\|text\\|value\\)\\>"
 223                   "\\([ \t]+\\sw+\\>\\)*")
 224           '(font-lock-match-c-style-declaration-item-and-skip-to-next
 225             ;; Start with point after all type specifiers.
 226             (goto-char (or (match-beginning 2) (match-end 1)))
 227             ;; Finish with point after first type specifier.
 228             (goto-char (match-end 1))
 229             ;; Fontify as a variable name.
 230             (1 font-lock-variable-name-face)))
 231     ;;
 232     ;; Object references and their declarations.
 233     '("\\<\\(ref\\)\\>[ \t]*\\((\\(\\sw+\\))\\)?"
 234       (3 font-lock-function-name-face nil t)
 235       (font-lock-match-c-style-declaration-item-and-skip-to-next nil nil
 236        (1 font-lock-variable-name-face)))
 237     ))
 238   "Gaudy level highlighting for Simula mode.")
 239
 240 (defvar simula-font-lock-keywords simula-font-lock-keywords-1
 241   "Default expressions to highlight in Simula mode.")
 242
 243 ; The following function is taken from cc-mode.el,
 244 ; it determines the flavor of the Emacs running
 245
 246 (defvar simula-mode-menu
 247   '(["Indent Line"            simula-indent-line t]
 248     ["Backward Statement"     simula-previous-statement t]
 249     ["Forward Statement"      simula-next-statement t]
 250     ["Backward Up Level"      simula-backward-up-level t]
 251     ["Forward Down Statement" simula-forward-down-level t])
 252   "Lucid Emacs menu for SIMULA mode.")
 253
 254 (if simula-mode-syntax-table
 255     ()
 256   (setq simula-mode-syntax-table (copy-syntax-table (standard-syntax-table)))
 257   (modify-syntax-entry ?!  "<"    simula-mode-syntax-table)
 258   (modify-syntax-entry ?$  "."    simula-mode-syntax-table)
 259   (modify-syntax-entry ?%  "< b"  simula-mode-syntax-table)
 260   (modify-syntax-entry ?\n "> b"  simula-mode-syntax-table)
 261   (modify-syntax-entry ?'  "\""   simula-mode-syntax-table)
 262   (modify-syntax-entry ?\( "()"   simula-mode-syntax-table)
 263   (modify-syntax-entry ?\) ")("   simula-mode-syntax-table)
 264   (modify-syntax-entry ?\; ">"    simula-mode-syntax-table)
 265   (modify-syntax-entry ?\[ "."    simula-mode-syntax-table)
 266   (modify-syntax-entry ?\\ "."    simula-mode-syntax-table)
 267   (modify-syntax-entry ?\] "."    simula-mode-syntax-table)
 268   (modify-syntax-entry ?_  "_"    simula-mode-syntax-table)
 269   (modify-syntax-entry ?\| "."    simula-mode-syntax-table)
 270   (modify-syntax-entry ?\{ "."    simula-mode-syntax-table)
 271   (modify-syntax-entry ?\} "."    simula-mode-syntax-table))
 272
 273 (defvar simula-mode-map
 274   (let ((map (make-sparse-keymap)))
 275     (define-key map "\C-c\C-u"   'simula-backward-up-level)
 276     (define-key map "\C-c\C-p"   'simula-previous-statement)
 277     (define-key map "\C-c\C-d"   'simula-forward-down-level)
 278     (define-key map "\C-c\C-n"   'simula-next-statement)
 279     ;; (define-key map "\C-c\C-g"   'simula-goto-definition)
 280     ;; (define-key map "\C-c\C-h"   'simula-standard-help)
 281     (define-key map "\177"       'backward-delete-char-untabify)
 282     (define-key map ":"          'simula-electric-label)
 283     (define-key map "\e\C-q"     'simula-indent-exp)
 284     (define-key map "\t"         'simula-indent-command)
 285     ;; Emacs 19 defines menus in the mode map
 286     (define-key map [menu-bar simula]
 287       (cons "SIMULA" (make-sparse-keymap "SIMULA")))
 288     (define-key map [menu-bar simula indent-exp]
 289       '("Indent Expression" . simula-indent-exp))
 290     (define-key map [menu-bar simula indent-line]
 291       '("Indent Line" . simula-indent-command))
 292     (define-key map [menu-bar simula separator-navigate]
 293       '("--"))
 294     (define-key map [menu-bar simula backward-stmt]
 295       '("Previous Statement" . simula-previous-statement))
 296     (define-key map [menu-bar simula forward-stmt]
 297       '("Next Statement" . simula-next-statement))
 298     (define-key map [menu-bar simula backward-up]
 299       '("Backward Up Level" . simula-backward-up-level))
 300     (define-key map [menu-bar simula forward-down]
 301       '("Forward Down Statement" . simula-forward-down-level))
 302
 303     (put 'simula-next-statement 'menu-enable '(not (eobp)))
 304     (put 'simula-previous-statement 'menu-enable '(not (bobp)))
 305     (put 'simula-forward-down-level 'menu-enable '(not (eobp)))
 306     (put 'simula-backward-up-level 'menu-enable '(not (bobp)))
 307     (put 'simula-indent-command 'menu-enable '(not buffer-read-only))
 308     (put 'simula-indent-exp 'menu-enable '(not buffer-read-only))
 309
 310     ;; RMS: mouse-3 should not select this menu.  mouse-3's global
 311     ;; definition is useful in SIMULA mode and we should not interfere
 312     ;; with that.  The menu is mainly for beginners, and for them,
 313     ;; the menubar requires less memory than a special click.
 314     ;; in Lucid Emacs, we want the menu to popup when the 3rd button is
 315     ;; hit.  In 19.10 and beyond this is done automatically if we put
 316     ;; the menu on mode-popup-menu variable, see c-common-init [cc-mode.el]
 317     ;;(if (not (boundp 'mode-popup-menu))
 318     ;;  (define-key simula-mode-map 'button3 'simula-popup-menu))
 319     map)
 320   "Keymap used in `simula-mode'.")
 321
 322 ;; menus for Lucid
 323 (defun simula-popup-menu (_e)
 324   "Pops up the SIMULA menu."
 325   (interactive "@e")
 326   (popup-menu (cons (concat mode-name " Mode Commands") simula-mode-menu)))
 327
 328 ;;;###autoload
 329 (define-derived-mode simula-mode prog-mode "Simula"
 330   "Major mode for editing SIMULA code.
 331 \\{simula-mode-map}
 332 Variables controlling indentation style:
 333  `simula-tab-always-indent'
 334     Non-nil means TAB in SIMULA mode should always reindent the current line,
 335     regardless of where in the line point is when the TAB command is used.
 336  `simula-indent-level'
 337     Indentation of SIMULA statements with respect to containing block.
 338  `simula-substatement-offset'
 339     Extra indentation after DO, THEN, ELSE, WHEN and OTHERWISE.
 340  `simula-continued-statement-offset' 3
 341     Extra indentation for lines not starting a statement or substatement,
 342     e.g. a nested FOR-loop.  If value is a list, each line in a multiple-
 343     line continued statement will have the car of the list extra indentation
 344     with respect to the previous line of the statement.
 345  `simula-label-offset' -4711
 346     Offset of SIMULA label lines relative to usual indentation.
 347  `simula-if-indent' (0 . 0)
 348     Extra indentation of THEN and ELSE with respect to the starting IF.
 349     Value is a cons cell, the car is extra THEN indentation and the cdr
 350     extra ELSE indentation.  IF after ELSE is indented as the starting IF.
 351  `simula-inspect-indent' (0 . 0)
 352     Extra indentation of WHEN and OTHERWISE with respect to the
 353     corresponding INSPECT.  Value is a cons cell, the car is
 354     extra WHEN indentation and the cdr extra OTHERWISE indentation.
 355  `simula-electric-indent' nil
 356     If this variable is non-nil, `simula-indent-line'
 357     will check the previous line to see if it has to be reindented.
 358  `simula-abbrev-keyword' `upcase'
 359     Determine how SIMULA keywords will be expanded.  Value is one of
 360     the symbols `upcase', `downcase', `capitalize', (as in) `abbrev-table',
 361     or nil if they should not be changed.
 362  `simula-abbrev-stdproc' `abbrev-table'
 363     Determine how standard SIMULA procedure and class names will be
 364     expanded.  Value is one of the symbols `upcase', `downcase', `capitalize',
 365     (as in) `abbrev-table', or nil if they should not be changed.
 366
 367 Turning on SIMULA mode calls the value of the variable simula-mode-hook
 368 with no arguments, if that value is non-nil."
 369   (set (make-local-variable 'comment-column) 40)
 370   ;; (set (make-local-variable 'end-comment-column) 75)
 371   (set (make-local-variable 'paragraph-start) "[ \t]*$\\|\\f")
 372   (set (make-local-variable 'paragraph-separate) paragraph-start)
 373   (set (make-local-variable 'indent-line-function) 'simula-indent-line)
 374   (set (make-local-variable 'comment-start) "! ")
 375   (set (make-local-variable 'comment-end) " ;")
 376   (set (make-local-variable 'comment-start-skip) "!+ *")
 377   (set (make-local-variable 'parse-sexp-ignore-comments) nil)
 378   (set (make-local-variable 'comment-multi-line) t)
 379   (set (make-local-variable 'font-lock-defaults)
 380        '((simula-font-lock-keywords simula-font-lock-keywords-1
 381           simula-font-lock-keywords-2 simula-font-lock-keywords-3)
 382          nil t ((?_ . "w"))))
 383   (set (make-local-variable 'syntax-propertize-function)
 384        simula-syntax-propertize-function)
 385   (abbrev-mode 1))
 386
 387 (defun simula-indent-exp ()
 388   "Indent SIMULA expression following point."
 389   (interactive)
 390   (let ((here (point))
 391         (simula-electric-indent nil)
 392         end)
 393     (simula-skip-comment-forward)
 394     (if (eobp)
 395         (goto-char here)
 396       (unwind-protect
 397           (progn
 398             (simula-next-statement 1)
 399             (setq end (point-marker))
 400             (simula-previous-statement 1)
 401             (beginning-of-line)
 402             (while (< (point) end)
 403               (if (not (looking-at "[ \t]*$"))
 404                   (simula-indent-line))
 405               (forward-line 1)))
 406         (and end (set-marker end nil))))))
 407
 408
 409 (defun simula-indent-line ()
 410   "Indent this line as SIMULA code.
 411 If `simula-electric-indent' is non-nil, indent previous line if necessary."
 412   (let ((origin (- (point-max) (point)))
 413         (indent (simula-calculate-indent))
 414         (case-fold-search t))
 415     (unwind-protect
 416         (if simula-electric-indent
 417             (progn
 418               ;;
 419               ;; manually expand abbrev on last line, if any
 420               ;;
 421               (end-of-line 0)
 422               (expand-abbrev)
 423               ;; now maybe we should reindent that line
 424               (beginning-of-line)
 425               (skip-chars-forward " \t\f")
 426               (if (and
 427                    (looking-at
 428                     "\\(end\\|if\\|then\\|else\\|when\\|otherwise\\)\\>")
 429                    (not (simula-context)))
 430                   ;; yes - reindent
 431                   (let ((post-indent (simula-calculate-indent)))
 432                     (if (eq (current-indentation) post-indent)
 433                         ()
 434                       (delete-horizontal-space)
 435                       (indent-to post-indent))))))
 436       (goto-char (- (point-max) origin))
 437       (if (eq (current-indentation) indent)
 438           (back-to-indentation)
 439         (delete-horizontal-space)
 440         (indent-to indent)))))
 441
 442
 443 (defun simula-indent-command (&optional whole-exp)
 444   "Indent current line as SIMULA code, or insert TAB character.
 445 If `simula-tab-always-indent' is non-nil, always indent current line.
 446 Otherwise, indent only if point is before any non-whitespace
 447 character on the line.
 448
 449 A numeric argument, regardless of its value, means indent rigidly
 450 all the lines of the SIMULA statement after point so that this line
 451 becomes properly indented.
 452 The relative indentation among the lines of the statement are preserved."
 453   (interactive "P")
 454   (let ((case-fold-search t))
 455     (if (or whole-exp simula-tab-always-indent
 456             (save-excursion
 457               (skip-chars-backward " \t\f")
 458               (bolp)))
 459         ;; reindent current line
 460         (let ((indent (save-excursion
 461                         (beginning-of-line)
 462                         (simula-calculate-indent)))
 463               (current (current-indentation))
 464               (origin (- (point-max) (point)))
 465               (bol (save-excursion
 466                      (skip-chars-backward " \t\f")
 467                      (bolp)))
 468               beg end)
 469           (unwind-protect
 470               (if (eq current indent)
 471                   (if (save-excursion
 472                         (skip-chars-backward " \t\f")
 473                         (bolp))
 474                       (back-to-indentation))
 475                 (beginning-of-line)
 476                 (delete-horizontal-space)
 477                 (indent-to indent))
 478             (if (not bol)
 479                 (goto-char (- (point-max) origin))))
 480           (setq origin (point))
 481           (if whole-exp
 482               (save-excursion
 483                 (beginning-of-line 2)
 484                 (setq beg (point))
 485                 (goto-char origin)
 486                 (simula-next-statement 1)
 487                 (setq end (point))
 488                 (if (and (> end beg) (not (eq indent current)))
 489                     (indent-code-rigidly beg end (- indent current) "%")))))
 490       (insert-tab))))
 491
 492
 493 (defun simula-context ()
 494   "Return value according to syntactic SIMULA context of point.
 495     0    point inside COMMENT comment
 496     1    point on SIMULA-compiler directive line
 497     2    point inside END comment
 498     3    point inside string
 499     4    point inside character constant
 500   nil    otherwise."
 501   ;; first, find out if this is a compiler directive line
 502   (if (save-excursion
 503         (beginning-of-line)
 504         (eq (following-char) ?%))
 505       ;; YES - return 1
 506       1
 507     (save-excursion
 508       ;; The current line is NOT a compiler directive line.
 509       ;; Now, the strategy is to search backward to find a semicolon
 510       ;; that is NOT inside a string. The point after semicolon MUST be
 511       ;; outside a comment, since semicolons are comment-ending and
 512       ;; comments are non-recursive. We take advantage of the fact
 513       ;; that strings MUST end on the same line as they started, so
 514       ;; that we can easily decide whether we are inside a string or not.
 515       (let (return-value (origin (point)))
 516         (skip-chars-backward "^;" (point-min))
 517         ;; found semicolon or beginning of buffer
 518         (let (loopvalue (saved-point origin))
 519           (while (and (not (bobp))
 520                       (if (progn
 521                             (beginning-of-line)
 522                             ;; compiler directive line? If so, cont searching..
 523                             (eq (following-char) ?%))
 524                           t
 525                         (while (< (point) saved-point)
 526                           (skip-chars-forward "^;\"'")
 527                           (forward-char 1)
 528                           (cond
 529                            ((eq (preceding-char) ?\;)
 530                             (setq saved-point (point)))
 531                            ((eq (preceding-char) ?\")
 532                             (skip-chars-forward "^\";")
 533                             (if (eq (following-char) ?\;)
 534                                 (setq saved-point (point) loopvalue t)
 535                               (forward-char 1)))
 536                            (t
 537                             (if (eq (following-char) ?')
 538                                 (forward-char 1))
 539                             (skip-chars-forward "^';")
 540                             (if (eq (following-char) ?\;)
 541                                 (setq saved-point (point) loopvalue t)
 542                               (forward-char 1)))))
 543                         loopvalue))
 544             (backward-char 1)
 545             (skip-chars-backward "^;")
 546             (setq saved-point (point) loopvalue nil)))
 547         ;; Now we are CERTAIN that we are outside comments and strings.
 548         ;; The job now is to search forward again towards the origin
 549         ;; skipping directives, comments and strings correctly,
 550         ;; so that we know what context we are in when we find the origin.
 551         (while (and
 552                 (< (point) origin)
 553                 (re-search-forward
 554                  "\\<end\\>\\|!\\|\"\\|'\\|^%\\|\\<comment\\>" origin 'move))
 555           (cond
 556            ((memq (preceding-char) '(?d ?D))
 557             (setq return-value 2)
 558             (while (and (re-search-forward
 559                          ";\\|\\<end\\>\\|\\<else\\>\\|\\<otherwise\\>\\|\\<when\\>\\|^%"
 560                          origin 'move)
 561                         ;; found another END?
 562                         (or (memq (preceding-char) '(?d ?D))
 563                             ;; if directive, skip line
 564                             (and (eq (preceding-char) ?%)
 565                                  (beginning-of-line 2))
 566                             ;; found other keyword, out of END comment
 567                             (setq return-value nil))))
 568             (if (and (eq (char-syntax (preceding-char)) ?w)
 569                      (eq (char-syntax (following-char)) ?w))
 570                 (save-excursion
 571                   (backward-word-strictly 1)
 572                   (if (looking-at "end\\>\\|else\\>\\|otherwise\\>\\|when\\>")
 573                       (setq return-value nil)))))
 574            ((memq (preceding-char) '(?! ?t ?T))
 575             ; skip comment
 576             (setq return-value 0)
 577             (skip-chars-forward "^%;" origin)
 578             (while (and return-value (< (point) origin))
 579               (if (eq (following-char) ?\;)
 580                   (setq return-value nil)
 581                 (if (bolp)
 582                     (beginning-of-line 2)       ; skip directive inside comment
 583                   (forward-char 1))             ; or single '%'
 584                 (skip-chars-forward "^%;" origin))))
 585            ((eq (preceding-char) ?\")
 586             (if (not (search-forward "\"" origin 'move))
 587                 (setq return-value 3)))
 588            ((eq (preceding-char) ?\')
 589             (if (or (eq (point) origin) (eobp))
 590                 (setq return-value 4)
 591               (forward-char 1)
 592               (if (not (search-forward "'" origin 'move))
 593                   (setq return-value 4))))
 594            ;; compiler directive line - skip
 595            (t (beginning-of-line 2))))
 596         return-value)
 597       )))
 598
 599
 600 (defun simula-electric-label ()
 601   "If this is a label that starts the line, reindent the line."
 602   (interactive)
 603   (expand-abbrev)
 604   (insert ?:)
 605   (let ((origin (- (point-max) (point)))
 606         (case-fold-search t)
 607         ;; don't mix a label with an assignment operator := :-
 608         ;; therefore take a peek at next typed character...
 609         (next-char (read-event)))
 610     (unwind-protect
 611         (setq unread-command-events (append unread-command-events
 612                                             (list next-char)))
 613         ;; Problem: find out if character just read is a command char
 614         ;; that would insert something after ':' making it a label.
 615         ;; At least \n, \r (and maybe \t) falls into this category.
 616         ;; This is a real crock, it depends on traditional keymap
 617         ;; bindings, that is, printing characters doing self-insert,
 618         ;; and no other command sequence inserting '-' or '='.
 619         ;; simula-electric-label can be easily fooled...
 620         (if (and (not (memq next-char '(?= ?-)))
 621                  (or (memq next-char '(?\n ?\r))
 622                      (and (eq next-char ?\t)
 623                           simula-tab-always-indent)
 624                      (not (memq (following-char) '(?= ?-))))
 625                  (not (simula-context))
 626                  ;; label?
 627                  (progn
 628                    (backward-char 1)
 629                    (skip-chars-backward " \t\f")
 630                    (skip-chars-backward "a-zA-Z0-9_")
 631                    (if (looking-at "virtual\\>")
 632                        nil
 633                      (skip-chars-backward " \t\f")
 634                      (bolp))))
 635             (let ((amount (simula-calculate-indent)))
 636               (delete-horizontal-space)
 637               (indent-to amount)))
 638       (goto-char (- (point-max) origin)))))
 639
 640
 641 (defun simula-backward-up-level (count)
 642   "Move backward up COUNT block levels.
 643 If COUNT is negative, move forward up block level instead."
 644   (interactive "p")
 645   (let ((origin (point))
 646         (case-fold-search t))
 647     (condition-case ()
 648         (if (> count 0)
 649             (while (> count 0)
 650               (re-search-backward "\\<begin\\>\\|\\<end\\>")
 651               (if (not (simula-context))
 652                   (setq count (if (memq (following-char) '(?b ?B))
 653                                   (1- count)
 654                                 (1+ count)))))
 655           (while (< count 0)
 656             (re-search-forward "\\<begin\\>\\|\\<end\\>")
 657             (backward-word-strictly 1)
 658             (if (not (simula-context))
 659                 (setq count (if (memq (following-char) '(?e ?E))
 660                                 (1+ count)
 661                               (1- count))))
 662             (backward-word-strictly -1)))
 663       ;; If block level not found, jump back to origin and signal an error
 664       (error (progn
 665                (goto-char origin)
 666                (error "No higher block level")))
 667       (quit (progn
 668               (goto-char origin)
 669               (signal 'quit nil))))))
 670
 671
 672 (defun simula-forward-down-level (count)
 673   "Move forward down COUNT block levels.
 674 If COUNT is negative, move backward down block level instead."
 675   (interactive "p")
 676   ;; When we search for a deeper block level, we must never
 677   ;; get out of the block where we started -> count >= start-count
 678   (let ((start-count count)
 679         (origin (point))
 680         (case-fold-search t))
 681     (condition-case ()
 682         (if (< count 0)
 683             (while (< count 0)
 684               (re-search-backward "\\<begin\\>\\|\\<end\\>")
 685               (if (not (simula-context))
 686                   (setq count (if (memq (following-char) '(?e ?E))
 687                                   (1+ count)
 688                                 (1- count))))
 689               (if (< count start-count) (signal 'error nil)))
 690           (while (> count 0)
 691             (re-search-forward "\\<begin\\>\\|\\<end\\>")
 692             (backward-word-strictly 1)
 693             (if (not (simula-context))
 694                 (setq count (if (memq (following-char) '(?b ?B))
 695                                 (1- count)
 696                               (1+ count))))
 697             (backward-word-strictly -1)
 698             ;; deeper level has to be found within starting block
 699             (if (> count start-count) (signal 'error nil))))
 700       ;; If block level not found, jump back to origin and signal an error
 701       (error (progn
 702                (goto-char origin)
 703                (error "No containing block level")))
 704       (quit (progn
 705               (goto-char origin)
 706               (signal 'quit nil))))))
 707
 708
 709 (defun simula-previous-statement (count)
 710   "Move backward COUNT statements.
 711 If COUNT is negative, move forward instead."
 712   (interactive "p")
 713   (if (< count 0)
 714       (simula-next-statement (- count))
 715     (let (status
 716           (case-fold-search t)
 717           (origin (point)))
 718       (condition-case ()
 719           ;;
 720           (progn
 721             (simula-skip-comment-backward)
 722             (if (memq (preceding-char) '(?n ?N))
 723                 (progn
 724                   (backward-word-strictly 1)
 725                   (if (not (looking-at "\\<begin\\>"))
 726                       (backward-word-strictly -1)))
 727               (if (eq (preceding-char) ?\;)
 728                   (backward-char 1))
 729               )
 730             (while (and (natnump (setq count (1- count)))
 731                         (setq status (simula-search-backward
 732                                       ";\\|\\<begin\\>" nil 'move))))
 733             (if status
 734                 (progn
 735                   (if (eq (following-char) ?\;)
 736                       (forward-char 1)
 737                     (backward-word-strictly -1))))
 738             (simula-skip-comment-forward))
 739         (error (progn (goto-char origin)
 740                       (error "Incomplete statement (too many ENDs)")))
 741         (quit (progn (goto-char origin) (signal 'quit nil)))))))
 742
 743
 744 (defun simula-next-statement (count)
 745   "Move forward COUNT statements.
 746 If COUNT is negative, move backward instead."
 747   (interactive "p")
 748   (if (< count 0)
 749       (simula-previous-statement (- count))
 750     (let (status
 751           (case-fold-search t)
 752           (origin (point)))
 753       (condition-case ()
 754           (progn
 755             (simula-skip-comment-forward)
 756             (if (looking-at "\\<end\\>") (forward-word-strictly 1))
 757             (while (and (natnump (setq count (1- count)))
 758                         (setq status (simula-search-forward
 759                                       ";\\|\\<end\\>" (point-max) 'move))))
 760             (if (and status (/= (preceding-char) ?\;))
 761                 (progn
 762                   (backward-word-strictly 1)
 763                   (simula-skip-comment-backward))))
 764         (error (progn (goto-char origin)
 765                       (error "Incomplete statement (too few ENDs)")))
 766         (quit (progn (goto-char origin) (signal 'quit nil)))))))
 767
 768
 769 (defun simula-skip-comment-backward (&optional stop-at-end)
 770   "Search towards bob to find first char that is outside a comment."
 771   (interactive)
 772   (catch 'simula-out
 773     (let (context)
 774       (while t
 775         (skip-chars-backward " \t\n\f")
 776         (if (eq (preceding-char) ?\;)
 777             (save-excursion
 778               (backward-char 1)
 779               (setq context (simula-context))
 780               (if (and stop-at-end (eq context 2))
 781                   (setq context nil)))
 782           (setq context (simula-context)))
 783         (cond
 784          ((memq context '(nil 3 4))
 785           ;; check to see if we found a label
 786           (if (and (eq (preceding-char) ?:)
 787                    (not (memq (following-char) '(?- ?=)))
 788                    (save-excursion
 789                      (skip-chars-backward ": \t\fa-zA-Z0-9_")
 790                      (not (looking-at "virtual\\>"))))
 791               (skip-chars-backward ": \t\fa-zA-Z0-9_")
 792             (throw 'simula-out nil)))
 793          ((eq context 0)
 794           ;; since we are inside a comment, it must start somewhere!
 795           (while (and (re-search-backward "!\\|\\<comment\\>")
 796                       (memq (simula-context) '(0 1)))))
 797          ((eq context 1)
 798           (beginning-of-line)
 799           (if (bobp)
 800               (throw 'simula-out nil)
 801             (backward-char)))
 802          ((eq context 2)
 803           ;; an END-comment must belong to an END
 804           (re-search-backward "\\<end\\>")
 805           (forward-word-strictly 1)
 806           (throw 'simula-out nil))
 807          ;; should be impossible to get here..
 808          )))))
 809
 810
 811 (defun simula-skip-comment-forward ()
 812   "Search towards eob to find first char that is outside a comment."
 813   ;; this function assumes we start with point .outside a comment
 814   (interactive)
 815   (catch 'simula-out
 816     (while t
 817       (skip-chars-forward " \t\n\f")
 818       ;; BUG: the following (0 2) branches don't take into account intermixing
 819       ;; directive lines
 820       (cond
 821        ((looking-at "!\\|\\<comment\\>")
 822         (search-forward ";" nil 'move))
 823        ((and (bolp) (eq (following-char) ?%))
 824         (beginning-of-line 2))
 825        ((and (looking-at "[a-z0-9_]*[ \t\f]*:[^-=]")
 826              (not (looking-at "virtual\\>")))
 827         (skip-chars-forward "a-zA-Z0-9_ \t\f:"))
 828        (t
 829         (throw 'simula-out t))))))
 830
 831
 832 (defun simula-forward-up-level ()
 833   (let ((continue-loop t)
 834         (origin (point))
 835         (case-fold-search t)
 836         return-value
 837         temp)
 838     (while continue-loop
 839       (if (re-search-backward "\\<begin\\>\\|\\<end\\>" (point-min) 'move)
 840           (setq temp (simula-context)
 841               return-value (and (memq (preceding-char) '(?d ?D))
 842                                 (memq temp '(nil 2)))
 843               continue-loop (and (not return-value)
 844                                  (simula-forward-up-level)))
 845         (setq continue-loop nil)))
 846     (if return-value
 847         t
 848       (goto-char origin)
 849       nil)))
 850
 851
 852 (defun simula-calculate-indent ()
 853   (save-excursion
 854     (let ((where (simula-context))
 855           (origin (point))
 856           (indent 0)
 857           continued
 858           start-line
 859           temp
 860           found-end
 861           prev-cont)
 862       (cond
 863        ((eq where 0)
 864         ;;
 865         ;; Comment.
 866         ;; If comment started on previous non-blank line, indent to the
 867         ;; column where the comment started, else indent as that line.
 868         ;;
 869         (skip-chars-backward " \t\n\f")
 870         (while (and (not (bolp)) (eq (simula-context) 0))
 871           (re-search-backward "^\\|!\\|\\<comment\\>"))
 872         (skip-chars-forward " \t\n\f")
 873         (prog1
 874             (current-column)
 875           (goto-char origin)))
 876        ((eq where 1)
 877         ;;
 878         ;; Directive. Always 0.
 879         ;;
 880         0)
 881        ;;
 882        ;; Detect missing string delimiters
 883        ;;
 884        ((eq where 3)
 885         (error "Inside string"))
 886        ((eq where 4)
 887         (error "Inside character constant"))
 888        ;;
 889        ;; check to see if inside ()'s
 890        ;;
 891        ((setq temp (simula-inside-parens))
 892         temp)
 893        ;;
 894        ;; Calculate non-comment indentation
 895        (t
 896         ;; first, find out if this line starts with something that needs
 897         ;; special indentation (END/IF/THEN/ELSE/WHEN/OTHERWISE or label)
 898         ;;
 899         (skip-chars-forward " \t\f")
 900         (cond
 901          ;;
 902          ;; END
 903          ;;
 904          ((looking-at "end\\>")
 905           (setq indent (- simula-indent-level)
 906                 found-end t))
 907          ;;
 908          ;; IF/THEN/ELSE
 909          ;;
 910          ((looking-at "if\\>\\|then\\>\\|else\\>")
 911           ;; search for the *starting* IF
 912           (cond
 913            ((memq (following-char) '(?T ?t))
 914             (setq indent (car simula-if-indent)))
 915            ((memq (following-char) '(?E ?e))
 916             (setq indent (cdr simula-if-indent)))
 917            (t
 918             (forward-word-strictly 1)
 919             (setq indent 0)))
 920           (simula-find-if))
 921          ;;
 922          ;; WHEN/OTHERWISE
 923          ;;
 924          ((looking-at "when\\>\\|otherwise\\>")
 925           ;; search for corresponding INSPECT
 926           (if (memq (following-char) '(?W ?w))
 927               (setq indent (car simula-inspect-indent))
 928             (setq indent (cdr simula-inspect-indent)))
 929           (simula-find-inspect))
 930          ;;
 931          ;; label:
 932          ;;
 933          ((and (not (looking-at "virtual\\>"))
 934                (looking-at "[a-z0-9_]*[ \t\f]*:[^-=]"))
 935           (setq indent simula-label-offset)))
 936         ;; find line with non-comment text
 937         (simula-skip-comment-backward 'dont-skip-end)
 938         (if (and found-end
 939                  (not (eq (preceding-char) ?\;))
 940                  (if (memq (preceding-char) '(?N ?n))
 941                      (save-excursion
 942                        (backward-word-strictly 1)
 943                        (not (looking-at "begin\\>")))
 944                    t))
 945             (progn
 946               (simula-previous-statement 1)
 947               (simula-skip-comment-backward)))
 948         (setq start-line
 949               (line-beginning-position)
 950               ;; - perhaps this is a continued statement
 951               continued
 952               (save-excursion
 953                 (and (not (bobp))
 954                      ;; (not found-end)
 955                      (if (eq (char-syntax (preceding-char)) ?w)
 956                          (progn
 957                            (backward-word-strictly 1)
 958                            (not (looking-at
 959                                  "begin\\|then\\|else\\|when\\|otherwise\\|do"
 960                                  )))
 961                        (not (memq (preceding-char) '(?: ?\;)))))))
 962         ;;
 963         ;; MAIN calculation loop - count BEGIN/DO etc.
 964         ;;
 965         (while (not (bolp))
 966           (if (re-search-backward
 967                ";\\|\\<\\(begin\\|end\\|if\\|else\\|then\\|when\\|otherwise\\|do\\)\\>"
 968                start-line 'move)
 969               (if (simula-context)
 970                   ();; found something in a comment/string - ignore
 971                 (setq temp (following-char))
 972                 (cond
 973                  ((eq temp ?\;)
 974                   (simula-previous-statement 1))
 975                  ((looking-at "begin\\>")
 976                   (setq indent (+ indent simula-indent-level)))
 977                  ((looking-at "end\\>")
 978                   (forward-word-strictly 1)
 979                   (simula-previous-statement 1))
 980                  ((looking-at "do\\>")
 981                   (setq indent (+ indent simula-substatement-offset))
 982                   (simula-find-do-match))
 983                  ((looking-at "\\(if\\|then\\|else\\)\\>")
 984                   (if (memq temp '(?I ?i))
 985                       (forward-word-strictly 1)
 986                     (setq indent (+ indent
 987                                     simula-substatement-offset
 988                                     (if (memq temp '(?T ?t))
 989                                         (car simula-if-indent)
 990                                       (cdr simula-if-indent)))))
 991                   (simula-find-if))
 992                  ((looking-at "\\<when\\>\\|\\<otherwise\\>")
 993                   (setq indent (+ indent
 994                                   simula-substatement-offset
 995                                   (if (memq temp '(?W ?w))
 996                                       (car simula-if-indent)
 997                                     (cdr simula-if-indent))))
 998                   (simula-find-inspect)))
 999                 ;; found the start of a [sub]statement
1000                 ;; add indentation for continued statement
1001                 (if continued
1002                     (setq indent
1003                           (+ indent
1004                              (if (listp simula-continued-statement-offset)
1005                                  (car simula-continued-statement-offset)
1006                                simula-continued-statement-offset))))
1007                 (setq start-line
1008                       (line-beginning-position)
1009                       continued nil))
1010             ;; search failed .. point is at beginning of line
1011             ;; determine if we should continue searching
1012             ;; (at or before comment or label)
1013             ;; temp = t means finished
1014             (setq temp
1015                   (and (not (simula-context))
1016                        (save-excursion
1017                          (skip-chars-forward " \t\f")
1018                          (or (looking-at "virtual")
1019                              (not
1020                               (looking-at
1021                                "!\\|comment\\>\\|[a-z0-9_]*[ \t\f]*:[^-=]")))))
1022                   prev-cont continued)
1023             ;; if we are finished, find current line's indentation
1024             (if temp
1025                 (setq indent (+ indent (current-indentation))))
1026             ;; find next line with non-comment SIMULA text
1027             ;; maybe indent extra if statement continues
1028             (simula-skip-comment-backward)
1029             (setq continued
1030                   (and (not (bobp))
1031                        (if (eq (char-syntax (preceding-char)) ?w)
1032                            (save-excursion
1033                              (backward-word-strictly 1)
1034                              (not (looking-at
1035                                    "begin\\|then\\|else\\|when\\|otherwise\\|do")))
1036                          (not (memq (preceding-char) '(?: ?\;))))))
1037             ;; if we the state of the continued-variable
1038             ;; changed, add indentation for continued statement
1039             (if (or (and prev-cont (not continued))
1040                     (and continued
1041                          (listp simula-continued-statement-offset)))
1042                 (setq indent
1043                       (+ indent
1044                          (if (listp simula-continued-statement-offset)
1045                              (car simula-continued-statement-offset)
1046                            simula-continued-statement-offset))))
1047             ;; while ends if point is at beginning of line at loop test
1048             (if (not temp)
1049                 (setq start-line (line-beginning-position))
1050               (beginning-of-line))))
1051         ;;
1052         ;; return indentation
1053         ;;
1054         indent)))))
1055
1056
1057 (defun simula-find-if ()
1058   "Find starting IF of a IF-THEN[-ELSE[-IF-THEN...]] statement."
1059   (catch 'simula-out
1060     (while t
1061       (if (and (simula-search-backward "\\<if\\>\\|;\\|\\<begin\\>"nil t)
1062                (memq (following-char) '(?I ?i)))
1063           (save-excursion
1064             ;;
1065             ;; find out if this IF was really the start of the IF statement
1066             ;;
1067             (simula-skip-comment-backward)
1068             (if (and (eq (char-syntax (preceding-char)) ?w)
1069                      (progn
1070                        (backward-word-strictly 1)
1071                        (looking-at "else\\>")))
1072                 ()
1073               (throw 'simula-out t)))
1074         (if (not (looking-at "\\<if\\>"))
1075             (error "Missing IF or misplaced BEGIN or ';' (can't find IF)")
1076           ;;
1077           ;; we were at the starting IF in the first place..
1078           ;;
1079           (throw 'simula-out t))))))
1080
1081
1082 (defun simula-find-inspect ()
1083   "Find INSPECT matching WHEN or OTHERWISE."
1084   (catch 'simula-out
1085     (let ((level 0))
1086       ;;
1087       ;; INSPECTs can be nested, have to find the corresponding one
1088       ;;
1089       (while t
1090         (if (and (simula-search-backward "\\<inspect\\>\\|\\<otherwise\\>\\|;"
1091                                           nil t)
1092                  (/= (following-char) ?\;))
1093             (if (memq (following-char) '(?O ?o))
1094                 (setq level (1+ level))
1095               (if (zerop level)
1096                   (throw 'simula-out t)
1097                 (setq level (1- level))))
1098           (error "Missing INSPECT or misplaced ';' (can't find INSPECT)"))))))
1099
1100
1101 (defun simula-find-do-match ()
1102   "Find keyword matching DO: FOR, WHILE, INSPECT or WHEN."
1103   (while (and (re-search-backward
1104                "\\<\\(do\\|for\\|while\\|inspect\\|when\\|end\\|begin\\)\\>\\|;"
1105                nil 'move)
1106               (simula-context)))
1107   (if (and (looking-at "\\<\\(for\\|while\\|inspect\\|when\\)\\>")
1108            (not (simula-context)))
1109       () ;; found match
1110     (error "No matching FOR, WHILE or INSPECT for DO, or misplaced ';'")))
1111
1112
1113 (defun simula-inside-parens ()
1114   "Return position after `(' on line if inside parentheses, nil otherwise."
1115   (save-excursion
1116     (let ((parlevel 0))
1117       (catch 'simula-out
1118         (while t
1119           (if (re-search-backward "(\\|)\\|;" nil t)
1120               (if (eq (simula-context) nil)
1121                   ;; found something - check it out
1122                   (cond
1123                    ((eq (following-char) ?\;)
1124                     (if (zerop parlevel)
1125                         (throw 'simula-out nil)
1126                       (error "Parenthesis mismatch or misplaced ';'")))
1127                    ((eq (following-char) ?\()
1128                     (if (zerop parlevel)
1129                         (throw 'simula-out (1+ (current-column)))
1130                       (setq parlevel (1- parlevel))))
1131                    (t (setq parlevel (1+ parlevel))))
1132                 );; nothing - inside comment or string
1133             ;; search failed
1134             (throw 'simula-out nil)))))))
1135
1136
1137 (defun simula-goto-definition ()
1138   "Goto point of definition of variable, procedure or class."
1139   (interactive))
1140
1141
1142 (defun simula-expand-stdproc ()
1143   (if (or (not simula-abbrev-stdproc) (simula-context))
1144       (unexpand-abbrev)
1145     (cond
1146      ((eq simula-abbrev-stdproc 'upcase) (upcase-word -1))
1147      ((eq simula-abbrev-stdproc 'downcase) (downcase-word -1))
1148      ((eq simula-abbrev-stdproc 'capitalize) (capitalize-word -1))
1149      ((eq simula-abbrev-stdproc 'abbrev-table)
1150       ;; If not in lowercase, expansions are always capitalized.
1151       ;; We then want to replace with the exact expansion.
1152       (if (equal (symbol-name last-abbrev) last-abbrev-text)
1153           ()
1154         (downcase-word -1)
1155         (expand-abbrev))))))
1156
1157
1158 (defun simula-expand-keyword ()
1159   (if (or (not simula-abbrev-keyword) (simula-context))
1160       (unexpand-abbrev)
1161     (cond
1162      ((eq simula-abbrev-keyword 'upcase) (upcase-word -1))
1163      ((eq simula-abbrev-keyword 'downcase) (downcase-word -1))
1164      ((eq simula-abbrev-keyword 'capitalize) (capitalize-word -1))
1165      ((eq simula-abbrev-stdproc 'abbrev-table)
1166       (if (equal (symbol-name last-abbrev) last-abbrev-text)
1167           ()
1168         (downcase-word -1)
1169         (expand-abbrev))))))
1170
1171
1172 (defun simula-electric-keyword ()
1173   "Expand SIMULA keyword.  If it starts the line, reindent."
1174   ;; redisplay
1175   (let ((show-char (eq this-command 'self-insert-command)))
1176     ;; If the abbrev expansion results in reindentation, the user may have
1177     ;; to wait some time before the character he typed is displayed
1178     ;; (the char causing the expansion is inserted AFTER the hook function
1179     ;; is called). This is annoying in case of normal characters.
1180     ;; However, if the user pressed a key bound to newline, it is better
1181     ;; to have the line inserted after the begin-end match.
1182     (if show-char
1183         (progn
1184           (insert-char last-command-event 1)
1185           (sit-for 0)
1186           (backward-char 1)))
1187     (if (let ((where (simula-context))
1188               (case-fold-search t))
1189           (if where
1190               (if (and (eq where 2) (eq (char-syntax (preceding-char)) ?w))
1191                   (save-excursion
1192                     (backward-word-strictly 1)
1193                     (not (looking-at "end\\>"))))))
1194         (unexpand-abbrev)
1195       (cond
1196        ((not simula-abbrev-keyword) (unexpand-abbrev))
1197        ((eq simula-abbrev-keyword 'upcase) (upcase-word -1))
1198        ((eq simula-abbrev-keyword 'downcase) (downcase-word -1))
1199        ((eq simula-abbrev-keyword 'capitalize) (capitalize-word -1)))
1200       (let ((pos (- (point-max) (point)))
1201             (case-fold-search t))
1202         (condition-case nil
1203             (progn
1204               ;; check if the expanded word is on the beginning of the line.
1205               (if (and (eq (char-syntax (preceding-char)) ?w)
1206                        (progn
1207                          (backward-word-strictly 1)
1208                          (if (looking-at "end\\>")
1209                              (save-excursion
1210                                (simula-backward-up-level 1)
1211                                (if (pos-visible-in-window-p)
1212                                    (sit-for 1)
1213                                  (message "Matches %s"
1214                                           (buffer-substring
1215                                            (point)
1216                                            (+ (point) (window-width)))))))
1217                          (skip-chars-backward " \t\f")
1218                          (bolp)))
1219                   (let ((indent (simula-calculate-indent)))
1220                     (if (eq indent (current-indentation))
1221                         ()
1222                       (delete-horizontal-space)
1223                       (indent-to indent)))
1224                 (skip-chars-forward " \t\f"))
1225               ;; check for END - blow whistles and ring bells
1226
1227               (goto-char (- (point-max) pos))
1228               (if show-char
1229                   (delete-char 1)))
1230           (quit (goto-char (- (point-max) pos))))))))
1231
1232
1233 (defun simula-search-backward (regexp &optional bound noerror)
1234   "Search backward from point for regular expression REGEXP,
1235 ignoring matches found inside SIMULA comments, string literals,
1236 and BEGIN..END blocks.
1237 Set point to the end of the occurrence found, and return point.
1238 An optional second argument BOUND bounds the search, it is a buffer position.
1239 The match found must not extend after that position.  Optional third argument
1240 NOERROR, if t, means if fail just return nil (no error).
1241 If not nil and not t, move to limit of search and return nil."
1242   (let ((comb-regexp (concat regexp "\\|\\<end\\>"))
1243         (start-point (point))
1244         context match)
1245     (catch 'simula-backward
1246       (while (re-search-backward comb-regexp bound 1)
1247         ;; We have a match, check SIMULA context at match-beginning
1248         ;; to see if we are outside comments etc.
1249         ;; Set MATCH to t if we found a true match,
1250         ;; set MATCH to 'BLOCK if we found a BEGIN..END block,
1251         ;; else set MATCH to nil.
1252         (save-match-data
1253           (setq context (simula-context))
1254           (cond
1255            ((eq context nil)
1256             (setq match (if (looking-at regexp) t 'BLOCK)))
1257            ;; A comment-ending `;' is part of the comment, and shouldn't match.
1258            ;; ((eq context 0)
1259            ;;  (setq match (if (eq (following-char) ?\;) t nil)))
1260            ((eq context 2)
1261             (setq match (if (and (looking-at regexp)
1262                                  (looking-at ";\\|\\<end\\>\\|\\<else\\>\\|\\<otherwise\\>\\|\\<when\\>"))
1263                             t
1264                           (if (looking-at "\\<end\\>") 'BLOCK nil))))
1265            (t (setq match nil))))
1266         ;; Exit if true match
1267         (if (eq match t) (throw 'simula-backward (point)))
1268         (if (eq match 'BLOCK)
1269         ;; We found the END of a block
1270             (let ((level 0))
1271               (while (natnump level)
1272                   (if (re-search-backward "\\<begin\\>\\|\\<end\\>" bound 1)
1273                       (let ((context (simula-context)))
1274                         ;;    We found a BEGIN -> decrease level count
1275                         (cond ((and (eq context nil)
1276                                    (memq (following-char) '(?b ?B)))
1277                                (setq level (1- level)))
1278                               ;; END -> increase level count
1279                               ((and (memq context '(nil 2))
1280                                     (memq (following-char) '(?e ?E)))
1281                                (setq level (1+ level)))))
1282                     ;; Block search failed.  Action depends on noerror.
1283                     (if (or (not noerror) (eq noerror t))
1284                         (goto-char start-point))
1285                     (if (not noerror)
1286                         (signal 'search-failed (list regexp)))
1287                     (throw 'simula-backward nil))))))
1288       ;; Search failed.  Action depends on noerror.
1289       (if (or (not noerror) (eq noerror t))
1290           (goto-char start-point))
1291       (if noerror
1292           nil
1293         (signal 'search-failed (list regexp))))))
1294
1295
1296 (defun simula-search-forward (regexp &optional bound noerror)
1297   "Search forward from point for regular expression REGEXP,
1298 ignoring matches found inside SIMULA comments, string literals,
1299 and BEGIN..END blocks.
1300 Set point to the end of the occurrence found, and return point.
1301 An optional second argument BOUND bounds the search, it is a buffer position.
1302 The match found must not extend after that position.  Optional third argument
1303 NOERROR, if t, means if fail just return nil (no error).
1304 If not nil and not t, move to limit of search and return nil."
1305   (let ((comb-regexp (concat regexp "\\|\\<begin\\>"))
1306         (start-point (point))
1307         context match)
1308     (catch 'simula-forward
1309       (while (re-search-forward comb-regexp bound 1)
1310         ;; We have a match, check SIMULA context at match-beginning
1311         ;; to see if we are outside comments.
1312         ;; Set MATCH to t if we found a true match,
1313         ;; set MATCH to 'BLOCK if we found a BEGIN..END block,
1314         ;; else set MATCH to nil.
1315         (save-match-data
1316           (save-excursion
1317             (goto-char (match-beginning 0))
1318             (setq context (simula-context))
1319             (cond
1320              ((not context)
1321               (setq match (if (looking-at regexp) t 'BLOCK)))
1322              ;; Comment-ending `;' is part of the comment, and shouldn't match.
1323              ;; ((eq context 0)
1324              ;;  (setq match (if (eq (following-char) ?\;) t nil)))
1325              ((eq context 2)
1326               (setq match (if (and (looking-at regexp)
1327                                    (looking-at ";\\|\\<end\\>\\|\\<else\\>\\|\\<otherwise\\>\\|\\<when\\>")) t nil)))
1328              (t (setq match nil)))))
1329         ;; Exit if true match
1330         (if (eq match t) (throw 'simula-forward (point)))
1331         (if (eq match 'BLOCK)
1332         ;; We found the BEGINning of a block
1333             (let ((level 0))
1334               (while (natnump level)
1335                   (if (re-search-forward "\\<begin\\>\\|\\<end\\>" bound 1)
1336                       (let ((context (simula-context)))
1337                         ;;    We found a BEGIN -> increase level count
1338                         (cond ((eq context nil) (setq level (1+ level)))
1339                               ;; END -> decrease level count
1340                               ((and (eq context 2)
1341                                     ;; Don't match BEGIN inside END comment
1342                                     (memq (preceding-char) '(?d ?D)))
1343                                (setq level (1- level)))))
1344                     ;; Block search failed.  Action depends on noerror.
1345                     (if (or (not noerror) (eq noerror t))
1346                         (goto-char start-point))
1347                     (if (not noerror)
1348                         (signal 'search-failed (list regexp)))
1349                     (throw 'simula-forward nil))))))
1350       ;; Search failed.  Action depends on noerror.
1351       (if (or (not noerror) (eq noerror t))
1352           (goto-char start-point))
1353       (if noerror
1354           nil
1355         (signal 'search-failed (list regexp))))))
1356
1357
1358 (defun simula-install-standard-abbrevs ()
1359   "Define Simula keywords, procedures and classes in local abbrev table."
1360   ;; procedure and class names are as of the SIMULA 87 standard.
1361   (interactive)
1362   (dolist (args
1363           '(("abs" "Abs" simula-expand-stdproc)
1364             ("accum" "Accum" simula-expand-stdproc)
1365             ("activate" "ACTIVATE" simula-expand-keyword)
1366             ("addepsilon" "AddEpsilon" simula-expand-stdproc)
1367             ("after" "AFTER" simula-expand-keyword)
1368             ("and" "AND" simula-expand-keyword)
1369             ("arccos" "ArcCos" simula-expand-stdproc)
1370             ("arcsin" "ArcSin" simula-expand-stdproc)
1371             ("arctan" "ArcTan" simula-expand-stdproc)
1372             ("arctan2" "ArcTan2" simula-expand-stdproc)
1373             ("array" "ARRAY" simula-expand-keyword)
1374             ("at" "AT" simula-expand-keyword)
1375             ("before" "BEFORE" simula-expand-keyword)
1376             ("begin" "BEGIN" simula-expand-keyword)
1377             ("blanks" "Blanks" simula-expand-stdproc)
1378             ("boolean" "BOOLEAN" simula-expand-keyword)
1379             ("breakoutimage" "BreakOutImage" simula-expand-stdproc)
1380             ("bytefile" "ByteFile" simula-expand-stdproc)
1381             ("call" "Call" simula-expand-stdproc)
1382             ("cancel" "Cancel" simula-expand-stdproc)
1383             ("cardinal" "Cardinal" simula-expand-stdproc)
1384             ("char" "Char" simula-expand-stdproc)
1385             ("character" "CHARACTER" simula-expand-keyword)
1386             ("checkpoint" "CheckPoint" simula-expand-stdproc)
1387             ("class" "CLASS" simula-expand-keyword)
1388             ("clear" "Clear" simula-expand-stdproc)
1389             ("clocktime" "ClockTime" simula-expand-stdproc)
1390             ("close" "Close" simula-expand-stdproc)
1391             ("comment" "COMMENT" simula-expand-keyword)
1392             ("constant" "Constant" simula-expand-stdproc)
1393             ("copy" "Copy" simula-expand-stdproc)
1394             ("cos" "Cos" simula-expand-stdproc)
1395             ("cosh" "CosH" simula-expand-stdproc)
1396             ("cotan" "CoTan" simula-expand-stdproc)
1397             ("cputime" "CpuTime" simula-expand-stdproc)
1398             ("current" "Current" simula-expand-stdproc)
1399             ("datetime" "DateTime" simula-expand-stdproc)
1400             ("decimalmark" "DecimalMark" simula-expand-stdproc)
1401             ("delay" "DELAY" simula-expand-keyword)
1402             ("deleteimage" "DeleteImage" simula-expand-stdproc)
1403             ("detach" "Detach" simula-expand-stdproc)
1404             ("digit" "Digit" simula-expand-stdproc)
1405             ("directbytefile" "DirectByteFile" simula-expand-stdproc)
1406             ("directfile" "DirectFile" simula-expand-stdproc)
1407             ("discrete" "Discrete" simula-expand-stdproc)
1408             ("do" "DO" simula-expand-keyword)
1409             ("downcase" "Downcase" simula-expand-stdproc)
1410             ("draw" "Draw" simula-expand-stdproc)
1411             ("eject" "Eject" simula-expand-stdproc)
1412             ("else" "ELSE" simula-electric-keyword)
1413             ("empty" "Empty" simula-expand-stdproc)
1414             ("end" "END" simula-electric-keyword)
1415             ("endfile" "Endfile" simula-expand-stdproc)
1416             ("entier" "Entier" simula-expand-stdproc)
1417             ("eq" "EQ" simula-expand-keyword)
1418             ("eqv" "EQV" simula-expand-keyword)
1419             ("erlang" "Erlang" simula-expand-stdproc)
1420             ("error" "Error" simula-expand-stdproc)
1421             ("evtime" "EvTime" simula-expand-stdproc)
1422             ("exp" "Exp" simula-expand-stdproc)
1423             ("external" "EXTERNAL" simula-expand-keyword)
1424             ("false" "FALSE" simula-expand-keyword)
1425             ("field" "Field" simula-expand-stdproc)
1426             ("file" "File" simula-expand-stdproc)
1427             ("first" "First" simula-expand-stdproc)
1428             ("follow" "Follow" simula-expand-stdproc)
1429             ("for" "FOR" simula-expand-keyword)
1430             ("ge" "GE" simula-expand-keyword)
1431             ("getchar" "GetChar" simula-expand-stdproc)
1432             ("getfrac" "GetFrac" simula-expand-stdproc)
1433             ("getint" "GetInt" simula-expand-stdproc)
1434             ("getreal" "GetReal" simula-expand-stdproc)
1435             ("go" "GO" simula-expand-keyword)
1436             ("goto" "GOTO" simula-expand-keyword)
1437             ("gt" "GT" simula-expand-keyword)
1438             ("head" "Head" simula-expand-stdproc)
1439             ("hidden" "HIDDEN" simula-expand-keyword)
1440             ("histd" "HistD" simula-expand-stdproc)
1441             ("histo" "Histo" simula-expand-stdproc)
1442             ("hold" "Hold" simula-expand-stdproc)
1443             ("idle" "Idle" simula-expand-stdproc)
1444             ("if" "IF" simula-expand-keyword)
1445             ("image" "Image" simula-expand-stdproc)
1446             ("imagefile" "ImageFile" simula-expand-stdproc)
1447             ("imp" "IMP" simula-expand-keyword)
1448             ("in" "IN" simula-expand-keyword)
1449             ("inbyte" "InByte" simula-expand-stdproc)
1450             ("inbytefile" "InByteFile" simula-expand-stdproc)
1451             ("inchar" "InChar" simula-expand-stdproc)
1452             ("infile" "InFile" simula-expand-stdproc)
1453             ("infrac" "InFrac" simula-expand-stdproc)
1454             ("inimage" "InImage" simula-expand-stdproc)
1455             ("inint" "InInt" simula-expand-stdproc)
1456             ("inner" "INNER" simula-expand-keyword)
1457             ("inreal" "InReal" simula-expand-stdproc)
1458             ("inrecord" "InRecord" simula-expand-stdproc)
1459             ("inspect" "INSPECT" simula-expand-keyword)
1460             ("integer" "INTEGER" simula-expand-keyword)
1461             ("intext" "InText" simula-expand-stdproc)
1462             ("into" "Into" simula-expand-stdproc)
1463             ("is" "IS" simula-expand-keyword)
1464             ("isochar" "ISOChar" simula-expand-stdproc)
1465             ("isopen" "IsOpen" simula-expand-stdproc)
1466             ("isorank" "ISORank" simula-expand-stdproc)
1467             ("label" "LABEL" simula-expand-keyword)
1468             ("last" "Last" simula-expand-stdproc)
1469             ("lastitem" "LastItem" simula-expand-stdproc)
1470             ("lastloc" "LastLoc" simula-expand-stdproc)
1471             ("le" "LE" simula-expand-keyword)
1472             ("length" "Length" simula-expand-stdproc)
1473             ("letter" "Letter" simula-expand-stdproc)
1474             ("line" "Line" simula-expand-stdproc)
1475             ("linear" "Linear" simula-expand-stdproc)
1476             ("linesperpage" "LinesPerPage" simula-expand-stdproc)
1477             ("link" "Link" simula-expand-stdproc)
1478             ("linkage" "Linkage" simula-expand-stdproc)
1479             ("ln" "Ln" simula-expand-stdproc)
1480             ("locate" "Locate" simula-expand-stdproc)
1481             ("location" "Location" simula-expand-stdproc)
1482             ("lock" "Lock" simula-expand-stdproc)
1483             ("locked" "Locked" simula-expand-stdproc)
1484             ("log10" "Log10" simula-expand-stdproc)
1485             ("long" "LONG" simula-expand-keyword)
1486             ("lowcase" "LowCase" simula-expand-stdproc)
1487             ("lowerbound" "LowerBound" simula-expand-stdproc)
1488             ("lowten" "LowTen" simula-expand-stdproc)
1489             ("lt" "LT" simula-expand-keyword)
1490             ("main" "Main" simula-expand-stdproc)
1491             ("max" "Max" simula-expand-stdproc)
1492             ("maxint" "MaxInt" simula-expand-stdproc)
1493             ("maxlongreal" "MaxLongReal" simula-expand-stdproc)
1494             ("maxloc" "MaxLoc" simula-expand-stdproc)
1495             ("maxrank" "MaxRank" simula-expand-stdproc)
1496             ("maxreal" "MaxReal" simula-expand-stdproc)
1497             ("min" "Min" simula-expand-stdproc)
1498             ("minint" "MinInt" simula-expand-stdproc)
1499             ("minlongreal" "MinLongReal" simula-expand-stdproc)
1500             ("minrank" "MinRank" simula-expand-stdproc)
1501             ("minreal" "MinReal" simula-expand-stdproc)
1502             ("mod" "Mod" simula-expand-stdproc)
1503             ("more" "More" simula-expand-stdproc)
1504             ("name" "NAME" simula-expand-keyword)
1505             ("ne" "NE" simula-expand-keyword)
1506             ("negexp" "NegExp" simula-expand-stdproc)
1507             ("new" "NEW" simula-expand-keyword)
1508             ("nextev" "NextEv" simula-expand-stdproc)
1509             ("none" "NONE" simula-expand-keyword)
1510             ("normal" "Normal" simula-expand-stdproc)
1511             ("not" "NOT" simula-expand-keyword)
1512             ("notext" "NOTEXT" simula-expand-keyword)
1513             ("open" "Open" simula-expand-stdproc)
1514             ("or" "OR" simula-expand-keyword)
1515             ("otherwise" "OTHERWISE" simula-electric-keyword)
1516             ("out" "Out" simula-expand-stdproc)
1517             ("outbyte" "OutByte" simula-expand-stdproc)
1518             ("outbytefile" "OutByteFile" simula-expand-stdproc)
1519             ("outchar" "OutChar" simula-expand-stdproc)
1520             ("outfile" "OutFile" simula-expand-stdproc)
1521             ("outfix" "OutFix" simula-expand-stdproc)
1522             ("outfrac" "OutFrac" simula-expand-stdproc)
1523             ("outimage" "OutImage" simula-expand-stdproc)
1524             ("outint" "OutInt" simula-expand-stdproc)
1525             ("outreal" "OutReal" simula-expand-stdproc)
1526             ("outrecord" "OutRecord" simula-expand-stdproc)
1527             ("outtext" "OutText" simula-expand-stdproc)
1528             ("page" "Page" simula-expand-stdproc)
1529             ("passivate" "Passivate" simula-expand-stdproc)
1530             ("poisson" "Poisson" simula-expand-stdproc)
1531             ("pos" "Pos" simula-expand-stdproc)
1532             ("precede" "Precede" simula-expand-stdproc)
1533             ("pred" "Pred" simula-expand-stdproc)
1534             ("prev" "Prev" simula-expand-stdproc)
1535             ("printfile" "PrintFile" simula-expand-stdproc)
1536             ("prior" "PRIOR" simula-expand-keyword)
1537             ("procedure" "PROCEDURE" simula-expand-keyword)
1538             ("process" "Process" simula-expand-stdproc)
1539             ("protected" "PROTECTED" simula-expand-keyword)
1540             ("putchar" "PutChar" simula-expand-stdproc)
1541             ("putfix" "PutFix" simula-expand-stdproc)
1542             ("putfrac" "PutFrac" simula-expand-stdproc)
1543             ("putint" "PutInt" simula-expand-stdproc)
1544             ("putreal" "PutReal" simula-expand-stdproc)
1545             ("qua" "QUA" simula-expand-keyword)
1546             ("randint" "RandInt" simula-expand-stdproc)
1547             ("rank" "Rank" simula-expand-stdproc)
1548             ("reactivate" "REACTIVATE" simula-expand-keyword)
1549             ("real" "REAL" simula-expand-keyword)
1550             ("ref" "REF" simula-expand-keyword)
1551             ("resume" "Resume" simula-expand-stdproc)
1552             ("setaccess" "SetAccess" simula-expand-stdproc)
1553             ("setpos" "SetPos" simula-expand-stdproc)
1554             ("short" "SHORT" simula-expand-keyword)
1555             ("sign" "Sign" simula-expand-stdproc)
1556             ("simset" "SimSet" simula-expand-stdproc)
1557             ("simulaid" "SimulaId" simula-expand-stdproc)
1558             ("simulation" "Simulation" simula-expand-stdproc)
1559             ("sin" "Sin" simula-expand-stdproc)
1560             ("sinh" "SinH" simula-expand-stdproc)
1561             ("sourceline" "SourceLine" simula-expand-stdproc)
1562             ("spacing" "Spacing" simula-expand-stdproc)
1563             ("sqrt" "Sqrt" simula-expand-stdproc)
1564             ("start" "Start" simula-expand-stdproc)
1565             ("step" "STEP" simula-expand-keyword)
1566             ("strip" "Strip" simula-expand-stdproc)
1567             ("sub" "Sub" simula-expand-stdproc)
1568             ("subepsilon" "SubEpsilon" simula-expand-stdproc)
1569             ("suc" "Suc" simula-expand-stdproc)
1570             ("switch" "SWITCH" simula-expand-keyword)
1571             ("sysin" "SysIn" simula-expand-stdproc)
1572             ("sysout" "SysOut" simula-expand-stdproc)
1573             ("tan" "Tan" simula-expand-stdproc)
1574             ("tanh" "TanH" simula-expand-stdproc)
1575             ("terminate_program" "Terminate_Program" simula-expand-stdproc)
1576             ("terminated" "Terminated" simula-expand-stdproc)
1577             ("text" "TEXT" simula-expand-keyword)
1578             ("then" "THEN" simula-electric-keyword)
1579             ("this" "THIS" simula-expand-keyword)
1580             ("time" "Time" simula-expand-stdproc)
1581             ("to" "TO" simula-expand-keyword)
1582             ("true" "TRUE" simula-expand-keyword)
1583             ("uniform" "Uniform" simula-expand-stdproc)
1584             ("unlock" "Unlock" simula-expand-stdproc)
1585             ("until" "UNTIL" simula-expand-keyword)
1586             ("upcase" "Upcase" simula-expand-stdproc)
1587             ("upperbound" "UpperBound" simula-expand-stdproc)
1588             ("value" "VALUE" simula-expand-keyword)
1589             ("virtual" "VIRTUAL" simula-expand-keyword)
1590             ("wait" "Wait" simula-expand-stdproc)
1591             ("when" "WHEN" simula-electric-keyword)
1592             ("while" "WHILE" simula-expand-keyword)))
1593     (define-abbrev simula-mode-abbrev-table
1594       (nth 0 args) (nth 1 args) (nth 2 args) nil 'system)))
1595
1596 (if simula-abbrev-file
1597     (read-abbrev-file simula-abbrev-file))
1598 (let (abbrevs-changed)
1599   (simula-install-standard-abbrevs))
1600
1601 ;; Hilit mode support.
1602 (when (fboundp 'hilit-set-mode-patterns)
1603   (when (and (boundp 'hilit-patterns-alist)
1604              (not (assoc 'simula-mode hilit-patterns-alist)))
1605     (hilit-set-mode-patterns
1606      'simula-mode
1607      '(
1608        ("^%\\([ \t\f].*\\)?$" nil comment)
1609        ("^%include\\>" nil include)
1610        ("\"[^\"\n]*\"\\|'.'\\|'![0-9]+!'" nil string)
1611        ("\\<\\(ACTIVATE\\|AFTER\\|AND\\|ARRAY\\|AT\\|BEFORE\\|BEGIN\\|BOOLEAN\\|CHARACTER\\|CLASS\\|DELAY\\|DO\\|ELSE\\|END\\|EQ\\|EQV\\|EXTERNAL\\|FALSE\\|FOR\\|GE\\|GO\\|GOTO\\|GT\\|HIDDEN\\|IF\\|IMP\\|IN\\|INNER\\|INSPECT\\|INTEGER\\|IS\\|LABEL\\|LE\\|LONG\\|LT\\|NAME\\|NE\\|NEW\\|NONE\\|NOT\\|NOTEXT\\|OR\\|OTHERWISE\\|PRIOR\\|PROCEDURE\\|PROTECTED\\|QUA\\|REACTIVATE\\|REAL\\|REF\\|SHORT\\|STEP\\|SWITCH\\|TEXT\\|THEN\\|THIS\\|TO\\|TRUE\\|UNTIL\\|VALUE\\|VIRTUAL\\|WHEN\\|WHILE\\)\\>" nil keyword)
1612        ("!\\|\\<COMMENT\\>" ";" comment))
1613      nil 'case-insensitive)))
1614 \f
1615 ;; defuns for submitting bug reports
1616
1617 (defconst simula-mode-help-address "bug-gnu-emacs@gnu.org"
1618   "Address accepting submission of `simula-mode' bug reports.")
1619
1620 (make-obsolete-variable 'simula-mode-help-address 'report-emacs-bug-address
1621                         "24.4")
1622
1623 (define-obsolete-function-alias 'simula-submit-bug-report
1624   'report-emacs-bug "24.4")
1625
1626 (provide 'simula)
1627
1628 ;;; simula.el ends here