1 ;;; pascal.el --- major mode for editing pascal source in Emacs
3 ;; Copyright (C) 1993, 1994, 1995 Free Software Foundation, Inc.
5 ;; Author: Espen Skoglund (espensk@stud.cs.uit.no)
8 ;; This file is part of GNU Emacs.
10 ;; This program is free software; you can redistribute it and/or modify
11 ;; it under the terms of the GNU General Public License as published by
12 ;; the Free Software Foundation; either version 2 of the License, or
13 ;; (at your option) any later version.
15 ;; This program is distributed in the hope that it will be useful,
16 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
17 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 ;; GNU General Public License for more details.
20 ;; You should have received a copy of the GNU General Public License
21 ;; along with this program; if not, write to the Free Software
22 ;; Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
29 ;;; Emacs should enter Pascal mode when you find a Pascal source file.
30 ;;; When you have entered Pascal mode, you may get more info by pressing
31 ;;; C-h m. You may also get online help describing various functions by:
32 ;;; C-h f <Name of function you want described>
34 ;;; If you want to customize Pascal mode to fit you better, you may add
35 ;;; these lines (the values of the variables presented here are the defaults):
37 ;;; ;; User customization for Pascal mode
38 ;;; (setq pascal-indent-level 3
39 ;;; pascal-case-indent 2
40 ;;; pascal-auto-newline nil
41 ;;; pascal-tab-always-indent t
42 ;;; pascal-auto-endcomments t
43 ;;; pascal-auto-lineup '(all)
44 ;;; pascal-toggle-completions nil
45 ;;; pascal-type-keywords '("array" "file" "packed" "char"
46 ;;; "integer" "real" "string" "record")
47 ;;; pascal-start-keywords '("begin" "end" "function" "procedure"
48 ;;; "repeat" "until" "while" "read" "readln"
49 ;;; "reset" "rewrite" "write" "writeln")
50 ;;; pascal-separator-keywords '("downto" "else" "mod" "div" "then"))
52 ;;; KNOWN BUGS / BUGREPORTS
53 ;;; =======================
54 ;;; As far as I know, there are no bugs in the current version of this
55 ;;; package. This may not be true however, since I never use this mode
56 ;;; myself and therefore would never notice them anyway. If you do
57 ;;; find any bugs, you may submit them to: espensk@stud.cs.uit.no
58 ;;; as well as to bug-gnu-emacs@prep.ai.mit.edu.
62 (defvar pascal-mode-abbrev-table nil
63 "Abbrev table in use in Pascal-mode buffers.")
64 (define-abbrev-table 'pascal-mode-abbrev-table ())
66 (defvar pascal-mode-map ()
67 "Keymap used in Pascal mode.")
70 (setq pascal-mode-map (make-sparse-keymap))
71 (define-key pascal-mode-map ";" 'electric-pascal-semi-or-dot)
72 (define-key pascal-mode-map "." 'electric-pascal-semi-or-dot)
73 (define-key pascal-mode-map ":" 'electric-pascal-colon)
74 (define-key pascal-mode-map "=" 'electric-pascal-equal)
75 (define-key pascal-mode-map "#" 'electric-pascal-hash)
76 (define-key pascal-mode-map "\r" 'electric-pascal-terminate-line)
77 (define-key pascal-mode-map "\t" 'electric-pascal-tab)
78 (define-key pascal-mode-map "\M-\t" 'pascal-complete-word)
79 (define-key pascal-mode-map "\M-?" 'pascal-show-completions)
80 (define-key pascal-mode-map "\177" 'backward-delete-char-untabify)
81 (define-key pascal-mode-map "\M-\C-h" 'pascal-mark-defun)
82 (define-key pascal-mode-map "\C-c\C-b" 'pascal-insert-block)
83 (define-key pascal-mode-map "\M-*" 'pascal-star-comment)
84 (define-key pascal-mode-map "\C-c\C-c" 'pascal-comment-area)
85 (define-key pascal-mode-map "\C-c\C-u" 'pascal-uncomment-area)
86 (define-key pascal-mode-map "\M-\C-a" 'pascal-beg-of-defun)
87 (define-key pascal-mode-map "\M-\C-e" 'pascal-end-of-defun)
88 (define-key pascal-mode-map "\C-c\C-d" 'pascal-goto-defun)
89 (define-key pascal-mode-map "\C-c\C-o" 'pascal-outline)
90 ;;; A command to change the whole buffer won't be used terribly
91 ;;; often, so no need for a key binding.
92 ; (define-key pascal-mode-map "\C-cd" 'pascal-downcase-keywords)
93 ; (define-key pascal-mode-map "\C-cu" 'pascal-upcase-keywords)
94 ; (define-key pascal-mode-map "\C-cc" 'pascal-capitalize-keywords)
97 (defvar pascal-imenu-generic-expression
98 '("^[ \t]*\\(function\\|procedure\\)[ \t\n]+\\([a-zA-Z0-9_.:]+\\)" . (2))
99 "Imenu expression for Pascal-mode. See `imenu-generic-expression'.")
101 (defvar pascal-keywords
102 '("and" "array" "begin" "case" "const" "div" "do" "downto" "else" "end"
103 "file" "for" "function" "goto" "if" "in" "label" "mod" "nil" "not" "of"
104 "or" "packed" "procedure" "program" "record" "repeat" "set" "then" "to"
105 "type" "until" "var" "while" "with"
106 ;; The following are not standard in pascal, but widely used.
107 "get" "put" "input" "output" "read" "readln" "reset" "rewrite" "write"
111 ;;; Regular expressions used to calculate indent, etc.
113 (defconst pascal-symbol-re "\\<[a-zA-Z_][a-zA-Z_0-9.]*\\>")
114 (defconst pascal-beg-block-re "\\<\\(begin\\|case\\|record\\|repeat\\)\\>")
115 (defconst pascal-end-block-re "\\<\\(end\\|until\\)\\>")
116 (defconst pascal-declaration-re "\\<\\(const\\|label\\|type\\|var\\)\\>")
117 (defconst pascal-defun-re "\\<\\(function\\|procedure\\|program\\)\\>")
118 (defconst pascal-sub-block-re "\\<\\(if\\|else\\|for\\|while\\|with\\)\\>")
119 (defconst pascal-noindent-re "\\<\\(begin\\|end\\|until\\|else\\)\\>")
120 (defconst pascal-nosemi-re "\\<\\(begin\\|repeat\\|then\\|do\\|else\\)\\>")
121 (defconst pascal-autoindent-lines-re
122 "\\<\\(label\\|var\\|type\\|const\\|until\\|end\\|begin\\|repeat\\|else\\)\\>")
124 ;;; Strings used to mark beginning and end of excluded text
125 (defconst pascal-exclude-str-start "{-----\\/----- EXCLUDED -----\\/-----")
126 (defconst pascal-exclude-str-end " -----/\\----- EXCLUDED -----/\\-----}")
128 (defvar pascal-mode-syntax-table nil
129 "Syntax table in use in Pascal-mode buffers.")
131 (if pascal-mode-syntax-table
133 (setq pascal-mode-syntax-table (make-syntax-table))
134 (modify-syntax-entry ?\\ "." pascal-mode-syntax-table)
135 (modify-syntax-entry ?( "()1" pascal-mode-syntax-table)
136 (modify-syntax-entry ?) ")(4" pascal-mode-syntax-table)
137 (modify-syntax-entry ?* ". 23" pascal-mode-syntax-table)
138 (modify-syntax-entry ?{ "<" pascal-mode-syntax-table)
139 (modify-syntax-entry ?} ">" pascal-mode-syntax-table)
140 (modify-syntax-entry ?+ "." pascal-mode-syntax-table)
141 (modify-syntax-entry ?- "." pascal-mode-syntax-table)
142 (modify-syntax-entry ?= "." pascal-mode-syntax-table)
143 (modify-syntax-entry ?% "." pascal-mode-syntax-table)
144 (modify-syntax-entry ?< "." pascal-mode-syntax-table)
145 (modify-syntax-entry ?> "." pascal-mode-syntax-table)
146 (modify-syntax-entry ?& "." pascal-mode-syntax-table)
147 (modify-syntax-entry ?| "." pascal-mode-syntax-table)
148 (modify-syntax-entry ?_ "w" pascal-mode-syntax-table)
149 (modify-syntax-entry ?\' "\"" pascal-mode-syntax-table))
151 (defvar pascal-font-lock-keywords
153 '("^[ \t]*\\(function\\|pro\\(cedure\\|gram\\)\\)\\>[ \t]*\\(\\sw+\\)?"
154 (1 font-lock-keyword-face) (3 font-lock-function-name-face nil t))
155 ; ("type" "const" "real" "integer" "char" "boolean" "var"
156 ; "record" "array" "file")
157 (cons (concat "\\<\\(array\\|boolean\\|c\\(har\\|onst\\)\\|file\\|"
158 "integer\\|re\\(al\\|cord\\)\\|type\\|var\\)\\>")
159 'font-lock-type-face)
160 '("\\<\\(label\\|external\\|forward\\)\\>" . font-lock-reference-face)
161 '("\\<\\([0-9]+\\)[ \t]*:" 1 font-lock-reference-face)
162 ; ("of" "to" "for" "if" "then" "else" "case" "while"
163 ; "do" "until" "and" "or" "not" "in" "with" "repeat" "begin" "end")
165 "and\\|begin\\|case\\|do\\|e\\(lse\\|nd\\)\\|for\\|i[fn]\\|"
166 "not\\|o[fr]\\|repeat\\|t\\(hen\\|o\\)\\|until\\|w\\(hile\\|ith\\)"
168 '("\\<\\(goto\\)\\>[ \t]*\\([0-9]+\\)?"
169 (1 font-lock-keyword-face) (2 font-lock-reference-face nil t)))
170 "Additional expressions to highlight in Pascal mode.")
172 (defvar pascal-indent-level 3
173 "*Indentation of Pascal statements with respect to containing block.")
175 (defvar pascal-case-indent 2
176 "*Indentation for case statements.")
178 (defvar pascal-auto-newline nil
179 "*Non-nil means automatically newline after simcolons and the punctation mark
182 (defvar pascal-tab-always-indent t
183 "*Non-nil means TAB in Pascal mode should always reindent the current line,
184 regardless of where in the line point is when the TAB command is used.")
186 (defvar pascal-auto-endcomments t
187 "*Non-nil means a comment { ... } is set after the ends which ends cases and
188 functions. The name of the function or case will be set between the braces.")
190 (defvar pascal-auto-lineup '(all)
191 "*List of contexts where auto lineup of :'s or ='s should be done.
192 Elements can be of type: 'paramlist', 'declaration' or 'case', which will
193 do auto lineup in parameterlist, declarations or case-statements
194 respectively. The word 'all' will do all lineups. '(case paramlist) for
195 instance will do lineup in case-statements and parameterlist, while '(all)
196 will do all lineups.")
198 (defvar pascal-toggle-completions nil
199 "*Non-nil means \\<pascal-mode-map>\\[pascal-complete-word] should try all possible completions one by one.
200 Repeated use of \\[pascal-complete-word] will show you all of them.
201 Normally, when there is more than one possible completion,
202 it displays a list of all possible completions.")
204 (defvar pascal-type-keywords
205 '("array" "file" "packed" "char" "integer" "real" "string" "record")
206 "*Keywords for types used when completing a word in a declaration or parmlist.
207 \(eg. integer, real, char.) The types defined within the Pascal program
208 will be completed runtime, and should not be added to this list.")
210 (defvar pascal-start-keywords
211 '("begin" "end" "function" "procedure" "repeat" "until" "while"
212 "read" "readln" "reset" "rewrite" "write" "writeln")
213 "*Keywords to complete when standing at the first word of a statement.
214 \(eg. begin, repeat, until, readln.)
215 The procedures and variables defined within the Pascal program
216 will be completed runtime and should not be added to this list.")
218 (defvar pascal-separator-keywords
219 '("downto" "else" "mod" "div" "then")
220 "*Keywords to complete when NOT standing at the first word of a statement.
221 \(eg. downto, else, mod, then.)
222 Variables and function names defined within the
223 Pascal program are completed runtime and should not be added to this list.")
229 (defsubst pascal-get-beg-of-line (&optional arg)
231 (beginning-of-line arg)
234 (defsubst pascal-get-end-of-line (&optional arg)
239 (defun pascal-declaration-end ()
241 (while (and (> nest 0)
243 "[:=]\\|\\(\\<record\\>\\)\\|\\(\\<end\\>\\)"
244 (save-excursion (end-of-line 2) (point)) t))
245 (cond ((match-beginning 1) (setq nest (1+ nest)))
246 ((match-beginning 2) (setq nest (1- nest)))))))
249 (defun pascal-declaration-beg ()
251 (while (and (> nest 0)
252 (re-search-backward "[:=]\\|\\<\\(type\\|var\\|label\\|const\\)\\>\\|\\(\\<record\\>\\)\\|\\(\\<end\\>\\)" (pascal-get-beg-of-line 0) t))
253 (cond ((match-beginning 1) (setq nest 0))
254 ((match-beginning 2) (setq nest (1- nest)))
255 ((match-beginning 3) (setq nest (1+ nest)))))
259 (defsubst pascal-within-string ()
261 (nth 3 (parse-partial-sexp (pascal-get-beg-of-line) (point)))))
265 (defun pascal-mode ()
266 "Major mode for editing Pascal code. \\<pascal-mode-map>
267 TAB indents for Pascal code. Delete converts tabs to spaces as it moves back.
269 \\[pascal-complete-word] completes the word around current point with respect \
271 \\[pascal-show-completions] shows all possible completions at this point.
273 Other useful functions are:
275 \\[pascal-mark-defun]\t- Mark function.
276 \\[pascal-insert-block]\t- insert begin ... end;
277 \\[pascal-star-comment]\t- insert (* ... *)
278 \\[pascal-comment-area]\t- Put marked area in a comment, fixing nested comments.
279 \\[pascal-uncomment-area]\t- Uncomment an area commented with \
280 \\[pascal-comment-area].
281 \\[pascal-beg-of-defun]\t- Move to beginning of current function.
282 \\[pascal-end-of-defun]\t- Move to end of current function.
283 \\[pascal-goto-defun]\t- Goto function prompted for in the minibuffer.
284 \\[pascal-outline]\t- Enter pascal-outline-mode (see also pascal-outline).
286 Variables controlling indentation/edit style:
288 pascal-indent-level (default 3)
289 Indentation of Pascal statements with respect to containing block.
290 pascal-case-indent (default 2)
291 Indentation for case statements.
292 pascal-auto-newline (default nil)
293 Non-nil means automatically newline after simcolons and the punctation mark
295 pascal-tab-always-indent (default t)
296 Non-nil means TAB in Pascal mode should always reindent the current line,
297 regardless of where in the line point is when the TAB command is used.
298 pascal-auto-endcomments (default t)
299 Non-nil means a comment { ... } is set after the ends which ends cases and
300 functions. The name of the function or case will be set between the braces.
301 pascal-auto-lineup (default t)
302 List of contexts where auto lineup of :'s or ='s hould be done.
304 See also the user variables pascal-type-keywords, pascal-start-keywords and
305 pascal-separator-keywords.
307 Turning on Pascal mode calls the value of the variable pascal-mode-hook with
308 no args, if that value is non-nil."
310 (kill-all-local-variables)
311 (use-local-map pascal-mode-map)
312 (setq major-mode 'pascal-mode)
313 (setq mode-name "Pascal")
314 (setq local-abbrev-table pascal-mode-abbrev-table)
315 (set-syntax-table pascal-mode-syntax-table)
316 (make-local-variable 'indent-line-function)
317 (setq indent-line-function 'pascal-indent-line)
318 (setq comment-indent-function 'pascal-indent-comment)
319 (make-local-variable 'parse-sexp-ignore-comments)
320 (setq parse-sexp-ignore-comments nil)
321 (make-local-variable 'case-fold-search)
322 (setq case-fold-search t)
323 (make-local-variable 'comment-start)
324 (setq comment-start "{")
325 (make-local-variable 'comment-start-skip)
326 (setq comment-start-skip "(\\*+ *\\|{ *")
327 (make-local-variable 'comment-end)
328 (setq comment-end "}")
330 (make-local-variable 'font-lock-defaults)
331 (setq font-lock-defaults '(pascal-font-lock-keywords nil t))
333 (make-local-variable 'imenu-generic-expression)
334 (setq imenu-generic-expression pascal-imenu-generic-expression)
335 (run-hooks 'pascal-mode-hook))
340 ;;; Electric functions
342 (defun electric-pascal-terminate-line ()
343 "Terminate line and indent next line."
345 ;; First, check if current line should be indented
348 (skip-chars-forward " \t")
349 (if (looking-at pascal-autoindent-lines-re)
350 (pascal-indent-line)))
351 (delete-horizontal-space) ; Removes trailing whitespaces
355 ;; Maybe we should set some endcomments
356 (if pascal-auto-endcomments
357 (pascal-set-auto-comments))
358 ;; Check if we shall indent inside comment
362 (skip-chars-forward " \t")
363 (cond ((looking-at "\\*[ \t]+)")
364 ;; Delete region between `*' and `)' if there is only whitespaces.
366 (delete-horizontal-space))
367 ((and (looking-at "(\\*\\|\\*[^)]")
369 (search-forward "*)" (pascal-get-end-of-line) t))))
371 ;; If last line was a star comment line then this one shall be too.
377 (defun electric-pascal-semi-or-dot ()
378 "Insert `;' or `.' character and reindent the line."
380 (insert last-command-char)
383 (pascal-indent-line))
384 (if pascal-auto-newline
385 (electric-pascal-terminate-line)))
387 (defun electric-pascal-colon ()
388 "Insert `:' and do all indentions except line indent on this line."
390 (insert last-command-char)
391 ;; Do nothing if within string.
392 (if (pascal-within-string)
396 (pascal-indent-line))
397 (let ((pascal-tab-always-indent nil))
398 (pascal-indent-command))))
400 (defun electric-pascal-equal ()
401 "Insert `=', and do indention if within type declaration."
403 (insert last-command-char)
404 (if (eq (car (pascal-calculate-indent)) 'declaration)
405 (let ((pascal-tab-always-indent nil))
406 (pascal-indent-command))))
408 (defun electric-pascal-hash ()
409 "Insert `#', and indent to coulmn 0 if this is a CPP directive."
411 (insert last-command-char)
412 (if (save-excursion (beginning-of-line) (looking-at "^[ \t]*#"))
413 (save-excursion (beginning-of-line)
414 (delete-horizontal-space))))
416 (defun electric-pascal-tab ()
417 "Function called when TAB is pressed in Pascal mode."
419 ;; Do nothing if within a string or in a CPP directive.
420 (if (or (pascal-within-string)
422 (save-excursion (beginning-of-line) (eq (following-char) ?#))))
424 ;; If pascal-tab-always-indent, indent the beginning of the line.
425 (if pascal-tab-always-indent
428 (pascal-indent-line))
430 (pascal-indent-command)))
435 ;;; Interactive functions
437 (defun pascal-insert-block ()
438 "Insert Pascal begin ... end; block in the code with right indentation."
442 (electric-pascal-terminate-line)
444 (electric-pascal-terminate-line)
447 (pascal-indent-line)))
449 (defun pascal-star-comment ()
450 "Insert Pascal star comment at point."
454 (electric-pascal-terminate-line)
456 (electric-pascal-terminate-line)
457 (delete-horizontal-space)
461 (defun pascal-mark-defun ()
462 "Mark the current pascal function (or procedure).
463 This puts the mark at the end, and point at the beginning."
466 (pascal-end-of-defun)
468 (pascal-beg-of-defun)
469 (if (fboundp 'zmacs-activate-region)
470 (zmacs-activate-region)))
472 (defun pascal-comment-area (start end)
473 "Put the region into a Pascal comment.
474 The comments that are in this area are \"deformed\":
475 `*)' becomes `!(*' and `}' becomes `!{'.
476 These deformed comments are returned to normal if you use
477 \\[pascal-uncomment-area] to undo the commenting.
479 The commented area starts with `pascal-exclude-str-start', and ends with
480 `pascal-include-str-end'. But if you change these variables,
481 \\[pascal-uncomment-area] won't recognize the comments."
484 ;; Insert start and endcomments
486 (if (and (save-excursion (skip-chars-forward " \t") (eolp))
487 (not (save-excursion (skip-chars-backward " \t") (bolp))))
490 (insert pascal-exclude-str-end)
495 (insert pascal-exclude-str-start)
497 ;; Replace end-comments within commented area
500 (while (re-search-backward "\\*)" start t)
501 (replace-match "!(*" t t)))
503 (while (re-search-backward "}" start t)
504 (replace-match "!{" t t)))))
506 (defun pascal-uncomment-area ()
507 "Uncomment a commented area; change deformed comments back to normal.
508 This command does nothing if the pointer is not in a commented
509 area. See also `pascal-comment-area'."
512 (let ((start (point))
514 ;; Find the boundaries of the comment
516 (setq start (progn (search-backward pascal-exclude-str-start nil t)
518 (setq end (progn (search-forward pascal-exclude-str-end nil t)
520 ;; Check if we're really inside a comment
521 (if (or (equal start (point)) (<= end (point)))
522 (message "Not standing within commented area.")
529 (delete-region pos (1+ (point))))
530 ;; Change comments back to normal
532 (while (re-search-backward "!{" start t)
533 (replace-match "}" t t)))
535 (while (re-search-backward "!(\\*" start t)
536 (replace-match "*)" t t)))
537 ;; Remove startcomment
542 (delete-region pos (1+ (point)))))))))
544 (defun pascal-beg-of-defun ()
545 "Move backward to the beginning of the current function or procedure."
548 (if (not (looking-at (concat "\\s \\|\\s)\\|" pascal-defun-re)))
550 (let ((nest 0) (max -1) (func 0)
551 (reg (concat pascal-beg-block-re "\\|"
552 pascal-end-block-re "\\|"
554 (while (re-search-backward reg nil 'move)
555 (cond ((let ((state (save-excursion
556 (parse-partial-sexp (point-min) (point)))))
557 (or (nth 3 state) (nth 4 state))) ; Inside string or comment
559 ((match-end 1) ; begin|case|record|repeat
560 (if (and (looking-at "\\<record\\>") (>= max 0))
561 (setq func (1- func)))
564 ((match-end 2) ; end|until
565 (if (and (= nest max) (>= max 0))
566 (setq func (1+ func)))
567 (setq nest (1- nest)))
568 ((match-end 3) ; function|procedure
571 (setq func (1- func)))))))
574 (defun pascal-end-of-defun ()
575 "Move forward to the end of the current function or procedure."
577 (if (looking-at "\\s ")
579 (if (not (looking-at pascal-defun-re))
580 (pascal-beg-of-defun))
582 (let ((nest 0) (func 1)
583 (reg (concat pascal-beg-block-re "\\|"
584 pascal-end-block-re "\\|"
586 (while (and (/= func 0)
587 (re-search-forward reg nil 'move))
588 (cond ((let ((state (save-excursion
589 (parse-partial-sexp (point-min) (point)))))
590 (or (nth 3 state) (nth 4 state))) ; Inside string or comment
593 (setq nest (1+ nest))
595 (goto-char (match-beginning 0))
596 (looking-at "\\<record\\>"))
597 (setq func (1+ func))))
599 (setq nest (1- nest))
601 (setq func (1- func))))
603 (setq func (1+ func))))))
606 (defun pascal-end-of-statement ()
607 "Move forward to end of current statement."
610 (regexp (concat "\\(" pascal-beg-block-re "\\)\\|\\("
611 pascal-end-block-re "\\)")))
612 (if (not (looking-at "[ \t\n]")) (forward-sexp -1))
613 (or (looking-at pascal-beg-block-re)
614 ;; Skip to end of statement
615 (setq pos (catch 'found
618 (cond ((looking-at "[ \t]*;")
619 (skip-chars-forward "^;")
621 (throw 'found (point)))
624 (looking-at pascal-beg-block-re))
625 (goto-char (match-beginning 0))
628 (throw 'found (point))))))))
630 ;; Skip a whole block
633 (re-search-forward regexp nil 'move)
634 (setq nest (if (match-end 1)
638 (throw 'found (point)))
640 (throw 'found (pascal-end-of-statement))))))
643 (defun pascal-downcase-keywords ()
644 "Downcase all Pascal keywords in the buffer."
646 (pascal-change-keywords 'downcase-word))
648 (defun pascal-upcase-keywords ()
649 "Upcase all Pascal keywords in the buffer."
651 (pascal-change-keywords 'upcase-word))
653 (defun pascal-capitalize-keywords ()
654 "Capitalize all Pascal keywords in the buffer."
656 (pascal-change-keywords 'capitalize-word))
658 ;; Change the keywords according to argument.
659 (defun pascal-change-keywords (change-word)
661 (let ((keyword-re (concat "\\<\\("
662 (mapconcat 'identity pascal-keywords "\\|")
664 (goto-char (point-min))
665 (while (re-search-forward keyword-re nil t)
666 (funcall change-word -1)))))
673 (defun pascal-set-auto-comments ()
674 "Insert `{ case }' or `{ NAME }' on this line if appropriate.
675 Insert `{ case }' if there is an `end' on the line which
676 ends a case block. Insert `{ NAME }' if there is an `end'
677 on the line which ends a function or procedure named NAME."
680 (skip-chars-forward " \t")
681 (if (and (looking-at "\\<end;")
684 (search-backward "{" (pascal-get-beg-of-line) t))))
685 (let ((type (car (pascal-calculate-indent))))
686 (if (eq type 'declaration)
689 ;; This is a case block
692 (delete-horizontal-space)
693 (insert " { case }"))
695 ;; Check if this is the end of a function
697 (while (not (or (looking-at pascal-defun-re) (bobp)))
699 (cond ((looking-at pascal-beg-block-re)
700 (setq nest (1- nest)))
701 ((looking-at pascal-end-block-re)
702 (setq nest (1+ nest)))))
708 (delete-horizontal-space)
712 (setq b (progn (pascal-beg-of-defun)
713 (skip-chars-forward "^ \t")
714 (skip-chars-forward " \t")
716 e (progn (skip-chars-forward "a-zA-Z0-9_")
718 (insert-buffer-substring (current-buffer) b e))
719 (insert " }"))))))))))
726 (defconst pascal-indent-alist
727 '((block . (+ ind pascal-indent-level))
728 (case . (+ ind pascal-case-indent))
729 (caseblock . ind) (cpp . 0)
730 (declaration . (+ ind pascal-indent-level))
731 (paramlist . (pascal-indent-paramlist t))
732 (comment . (pascal-indent-comment t))
733 (defun . ind) (contexp . ind)
734 (unknown . 0) (string . 0)))
736 (defun pascal-indent-command ()
737 "Indent for special part of code."
738 (let* ((indent-str (pascal-calculate-indent))
739 (type (car indent-str))
740 (ind (car (cdr indent-str))))
741 (cond ((and (eq type 'paramlist)
742 (or (memq 'all pascal-auto-lineup)
743 (memq 'paramlist pascal-auto-lineup)))
744 (pascal-indent-paramlist)
745 (pascal-indent-paramlist))
746 ((and (eq type 'declaration)
747 (or (memq 'all pascal-auto-lineup)
748 (memq 'declaration pascal-auto-lineup)))
749 (pascal-indent-declaration))
750 ((and (eq type 'case) (not (looking-at "^[ \t]*$"))
751 (or (memq 'all pascal-auto-lineup)
752 (memq 'case pascal-auto-lineup)))
753 (pascal-indent-case)))
754 (if (looking-at "[ \t]+$")
755 (skip-chars-forward " \t"))))
757 (defun pascal-indent-line ()
758 "Indent current line as a Pascal statement."
759 (let* ((indent-str (pascal-calculate-indent))
760 (type (car indent-str))
761 (ind (car (cdr indent-str))))
762 (if (looking-at "^[0-9a-zA-Z]+[ \t]*:[^=]")
763 (search-forward ":" nil t))
764 (delete-horizontal-space)
765 ;; Some things should not be indented
766 (if (or (and (eq type 'declaration) (looking-at pascal-declaration-re))
768 (looking-at pascal-defun-re))
770 ;; Other things should have no extra indent
771 (if (looking-at pascal-noindent-re)
773 ;; But most lines are treated this way:
774 (indent-to (eval (cdr (assoc type pascal-indent-alist))))
777 (defun pascal-calculate-indent ()
778 "Calculate the indent of the current Pascal line.
779 Return a list of two elements: (INDENT-TYPE INDENT-LEVEL)."
781 (let* ((oldpos (point))
782 (state (save-excursion (parse-partial-sexp (point-min) (point))))
783 (nest 0) (par 0) (complete (looking-at "[ \t]*end\\>"))
784 (elsed (looking-at "[ \t]*else\\>"))
785 (type (catch 'nesting
786 ;; Check if inside a string, comment or parenthesis
787 (cond ((nth 3 state) (throw 'nesting 'string))
788 ((nth 4 state) (throw 'nesting 'comment))
790 (goto-char (scan-lists (point) -1 (car state)))
791 (setq par (1+ (current-column))))
792 ((save-excursion (beginning-of-line)
793 (eq (following-char) ?#))
794 (throw 'nesting 'cpp)))
795 ;; Loop until correct indent is found
798 (cond (;--Escape from case statements
799 (and (looking-at "[A-Za-z0-9]+[ \t]*:[^=]")
801 (save-excursion (skip-chars-backward " \t")
804 (end-of-line) (backward-sexp) (point))
806 (> (save-excursion (goto-char oldpos)
810 (throw 'nesting 'caseblock))
811 (;--Nest block outwards
812 (looking-at pascal-beg-block-re)
814 (cond ((looking-at "case\\>")
815 (throw 'nesting 'case))
816 ((looking-at "record\\>")
817 (throw 'nesting 'declaration))
818 (t (throw 'nesting 'block)))
819 (setq nest (1- nest))))
820 (;--Nest block inwards
821 (looking-at pascal-end-block-re)
822 (if (and (looking-at "end\\s ")
823 elsed (not complete))
824 (throw 'nesting 'block))
827 (;--Defun (or parameter list)
828 (looking-at pascal-defun-re)
830 (throw 'nesting 'defun)
833 (while (re-search-forward
834 "\\(\\<record\\>\\)\\|\\<end\\>"
837 (setq n (1+ n)) (setq n (1- n))))
839 (throw 'nesting 'declaration)
840 (throw 'nesting 'paramlist)))))
842 (looking-at pascal-declaration-re)
846 (looking-at "^[ \t]*$"))
847 (throw 'nesting 'unknown)
848 (throw 'nesting 'declaration)))
849 (;--If, else or while statement
851 (looking-at pascal-sub-block-re))
852 (throw 'nesting 'block))
853 (;--Found complete statement
854 (save-excursion (forward-sexp 1)
855 (= (following-char) ?\;))
857 (;--No known statements
859 (throw 'nesting 'unknown))
862 ;; Return type of block and indent level.
863 (if (> par 0) ; Unclosed Parenthesis
865 (list type (pascal-indent-level))))))
867 (defun pascal-indent-level ()
868 "Return the indent-level the current statement has.
869 Do not count labels, case-statements or records."
872 (if (looking-at "[ \t]*[0-9a-zA-Z]+[ \t]*:[^=]")
873 (search-forward ":" nil t)
874 (if (looking-at ".*=[ \t]*record\\>")
875 (search-forward "=" nil t)))
876 (skip-chars-forward " \t")
879 (defun pascal-indent-comment (&optional arg)
880 "Indent current line as comment.
881 If optional arg is non-nil, just return the
882 column number the line should be indented to."
883 (let* ((stcol (save-excursion
884 (re-search-backward "(\\*\\|{" nil t)
885 (1+ (current-column)))))
887 (delete-horizontal-space)
890 (defun pascal-indent-case ()
891 "Indent within case statements."
892 (skip-chars-forward ": \t")
896 (re-search-backward "\\<case\\>" nil t)))
900 (while (< (point) (marker-position end))
901 (if (re-search-forward
902 "^[ \t]*[^ \t,:]+[ \t]*\\(,[ \t]*[^ \t,:]+[ \t]*\\)*:"
903 (marker-position end) 'move)
905 (delete-horizontal-space)
906 (if (> (current-column) ind)
907 (setq ind (current-column)))
908 (pascal-end-of-statement))
910 (setq oldpos (marker-position end))
911 ;; Indent all case statements
912 (while (< (point) (marker-position end))
913 (if (re-search-forward
914 "^[ \t]*[^][ \t,\\.:]+[ \t]*\\(,[ \t]*[^ \t,:]+[ \t]*\\)*:"
915 (marker-position end) 'move)
918 (if (/= (following-char) ?:)
921 (delete-horizontal-space)
923 (setq oldpos (point))
924 (pascal-end-of-statement))
927 (defun pascal-indent-paramlist (&optional arg)
928 "Indent current line in parameterlist.
929 If optional arg is non-nil, just return the
930 indent of the current line in parameterlist."
932 (let* ((oldpos (point))
933 (stpos (progn (goto-char (scan-lists (point) -1 1)) (point)))
934 (stcol (1+ (current-column)))
935 (edpos (progn (pascal-declaration-end)
936 (search-backward ")" (pascal-get-beg-of-line) t)
938 (usevar (re-search-backward "\\<var\\>" stpos t)))
940 ;; If arg, just return indent
943 (if (or (not usevar) (looking-at "[ \t]*var\\>"))
947 (delete-horizontal-space)
948 (if (and usevar (not (looking-at "var\\>")))
949 (indent-to (+ 4 stcol)))
950 (pascal-indent-declaration nil stpos edpos)))))
952 (defun pascal-indent-declaration (&optional arg start end)
953 "Indent current lines as declaration, lining up the `:'s or `='s."
954 (let ((pos (point-marker)))
955 (if (and (not (or arg start)) (not (pascal-declaration-beg)))
957 (let ((lineup (if (or (looking-at "\\<var\\>\\|\\<record\\>") arg start)
959 (stpos (if start start
960 (forward-word 2) (backward-word 1) (point)))
961 (edpos (set-marker (make-marker)
963 (max (progn (pascal-declaration-end)
969 ;; Indent lines in record block
971 (while (<= (point) (marker-position edpos))
973 (delete-horizontal-space)
974 (if (looking-at "end\\>")
976 (indent-to (+ arg pascal-indent-level)))
980 (setq ind (pascal-get-lineup-indent stpos edpos lineup))
982 (while (<= (point) (marker-position edpos))
983 (if (search-forward lineup (pascal-get-end-of-line) 'move)
985 (delete-horizontal-space)
987 (if (not (looking-at lineup))
988 (forward-line 1) ; No more indent if there is no : or =
990 (delete-horizontal-space)
992 ;; Indent record block
993 (if (looking-at "record\\>")
994 (pascal-indent-declaration (current-column)))
997 ;; If arg - move point
998 (if arg (forward-line -1)
999 (goto-char (marker-position pos)))))
1001 ; "Return the indent level that will line up several lines within the region
1002 ;from b to e nicely. The lineup string is str."
1003 (defun pascal-get-lineup-indent (b e str)
1006 (reg (concat str "\\|\\(\\<record\\>\\)"))
1009 ;; Get rightmost position
1010 (while (< (point) e)
1012 (if (re-search-forward reg (min e (pascal-get-end-of-line 2)) 'move)
1014 ;; Skip record blocks
1015 (if (match-beginning 1)
1016 (pascal-declaration-end)
1018 (goto-char (match-beginning 0))
1019 (skip-chars-backward " \t")
1020 (if (> (current-column) ind)
1021 (setq ind (current-column)))
1022 (goto-char (match-end 0)))))))
1023 ;; In case no lineup was found
1026 ;; No lineup-string found
1029 (skip-chars-backward " \t")
1030 (1+ (current-column))))))
1037 (defvar pascal-str nil)
1038 (defvar pascal-all nil)
1039 (defvar pascal-pred nil)
1040 (defvar pascal-buffer-to-use nil)
1041 (defvar pascal-flag nil)
1043 (defun pascal-string-diff (str1 str2)
1044 "Return index of first letter where STR1 and STR2 differs."
1048 (if (or (> (1+ diff) (length str1))
1049 (> (1+ diff) (length str2)))
1051 (or (equal (aref str1 diff) (aref str2 diff))
1053 (setq diff (1+ diff))))))
1055 ;; Calculate all possible completions for functions if argument is `function',
1056 ;; completions for procedures if argument is `procedure' or both functions and
1057 ;; procedures otherwise.
1059 (defun pascal-func-completion (type)
1060 ;; Build regular expression for function/procedure names
1061 (if (string= pascal-str "")
1062 (setq pascal-str "[a-zA-Z_]"))
1063 (let ((pascal-str (concat (cond
1064 ((eq type 'procedure) "\\<\\(procedure\\)\\s +")
1065 ((eq type 'function) "\\<\\(function\\)\\s +")
1066 (t "\\<\\(function\\|procedure\\)\\s +"))
1067 "\\<\\(" pascal-str "[a-zA-Z0-9_.]*\\)\\>"))
1070 (if (not (looking-at "\\<\\(function\\|procedure\\)\\>"))
1071 (re-search-backward "\\<\\(function\\|procedure\\)\\>" nil t))
1074 ;; Search through all reachable functions
1075 (while (pascal-beg-of-defun)
1076 (if (re-search-forward pascal-str (pascal-get-end-of-line) t)
1077 (progn (setq match (buffer-substring (match-beginning 2)
1079 (if (or (null pascal-pred)
1080 (funcall pascal-pred match))
1081 (setq pascal-all (cons match pascal-all)))))
1082 (goto-char (match-beginning 0)))))
1084 (defun pascal-get-completion-decl ()
1085 ;; Macro for searching through current declaration (var, type or const)
1086 ;; for matches of `str' and adding the occurence tp `all'
1087 (let ((end (save-excursion (pascal-declaration-end)
1091 (while (< (point) end)
1092 (if (re-search-forward "[:=]" (pascal-get-end-of-line) t)
1093 ;; Traverse current line
1094 (while (and (re-search-backward
1095 (concat "\\((\\|\\<\\(var\\|type\\|const\\)\\>\\)\\|"
1097 (pascal-get-beg-of-line) t)
1098 (not (match-end 1)))
1099 (setq match (buffer-substring (match-beginning 0) (match-end 0)))
1100 (if (string-match (concat "\\<" pascal-str) match)
1101 (if (or (null pascal-pred)
1102 (funcall pascal-pred match))
1103 (setq pascal-all (cons match pascal-all))))))
1104 (if (re-search-forward "\\<record\\>" (pascal-get-end-of-line) t)
1105 (pascal-declaration-end)
1106 (forward-line 1)))))
1108 (defun pascal-type-completion ()
1109 "Calculate all possible completions for types."
1110 (let ((start (point))
1112 ;; Search for all reachable type declarations
1113 (while (or (pascal-beg-of-defun)
1114 (setq goon (not goon)))
1116 (if (and (< start (prog1 (save-excursion (pascal-end-of-defun)
1120 "\\<type\\>\\|\\<\\(begin\\|function\\|procedure\\)\\>"
1122 (not (match-end 1)))
1123 ;; Check current type declaration
1124 (pascal-get-completion-decl))))))
1126 (defun pascal-var-completion ()
1127 "Calculate all possible completions for variables (or constants)."
1128 (let ((start (point))
1130 ;; Search for all reachable var declarations
1131 (while (or (pascal-beg-of-defun)
1132 (setq goon (not goon)))
1134 (if (> start (prog1 (save-excursion (pascal-end-of-defun)
1136 () ; Declarations not reacable
1137 (if (search-forward "(" (pascal-get-end-of-line) t)
1138 ;; Check parameterlist
1139 (pascal-get-completion-decl))
1141 (while (>= (setq twice (1- twice)) 0)
1142 (cond ((and (re-search-forward
1143 (concat "\\<\\(var\\|const\\)\\>\\|"
1144 "\\<\\(begin\\|function\\|procedure\\)\\>")
1146 (not (match-end 2)))
1147 ;; Check var/const declarations
1148 (pascal-get-completion-decl))
1150 (setq twice 0)))))))))
1153 (defun pascal-keyword-completion (keyword-list)
1154 "Give list of all possible completions of keywords in KEYWORD-LIST."
1155 (mapcar '(lambda (s)
1156 (if (string-match (concat "\\<" pascal-str) s)
1157 (if (or (null pascal-pred)
1158 (funcall pascal-pred s))
1159 (setq pascal-all (cons s pascal-all)))))
1162 ;; Function passed to completing-read, try-completion or
1163 ;; all-completions to get completion on STR. If predicate is non-nil,
1164 ;; it must be a function to be called for every match to check if this
1165 ;; should really be a match. If flag is t, the function returns a list
1166 ;; of all possible completions. If it is nil it returns a string, the
1167 ;; longest possible completion, or t if STR is an exact match. If flag
1168 ;; is 'lambda, the function returns t if STR is an exact match, nil
1171 (defun pascal-completion (pascal-str pascal-pred pascal-flag)
1173 (let ((pascal-all nil))
1174 ;; Set buffer to use for searching labels. This should be set
1175 ;; within functins which use pascal-completions
1176 (set-buffer pascal-buffer-to-use)
1178 ;; Determine what should be completed
1179 (let ((state (car (pascal-calculate-indent))))
1180 (cond (;--Within a declaration or parameterlist
1181 (or (eq state 'declaration) (eq state 'paramlist)
1182 (and (eq state 'defun)
1184 (re-search-backward ")[ \t]*:"
1185 (pascal-get-beg-of-line) t))))
1186 (if (or (eq state 'paramlist) (eq state 'defun))
1187 (pascal-beg-of-defun))
1188 (pascal-type-completion)
1189 (pascal-keyword-completion pascal-type-keywords))
1190 (;--Starting a new statement
1191 (and (not (eq state 'contexp))
1193 (skip-chars-backward "a-zA-Z0-9_.")
1195 (or (looking-at pascal-nosemi-re)
1198 (looking-at "\\s *\\(;\\|:[^=]\\)")))))
1199 (save-excursion (pascal-var-completion))
1200 (pascal-func-completion 'procedure)
1201 (pascal-keyword-completion pascal-start-keywords))
1203 (save-excursion (pascal-var-completion))
1204 (pascal-func-completion 'function)
1205 (pascal-keyword-completion pascal-separator-keywords))))
1207 ;; Now we have built a list of all matches. Give response to caller
1208 (pascal-completion-response))))
1210 (defun pascal-completion-response ()
1211 (cond ((or (equal pascal-flag 'lambda) (null pascal-flag))
1212 ;; This was not called by all-completions
1213 (if (null pascal-all)
1214 ;; Return nil if there was no matching label
1216 ;; Get longest string common in the labels
1217 (let* ((elm (cdr pascal-all))
1218 (match (car pascal-all))
1219 (min (length match))
1221 (if (string= match pascal-str)
1222 ;; Return t if first match was an exact match
1224 (while (not (null elm))
1225 ;; Find longest common string
1226 (if (< (setq tmp (pascal-string-diff match (car elm))) min)
1229 (setq match (substring match 0 min))))
1230 ;; Terminate with match=t if this is an exact match
1231 (if (string= (car elm) pascal-str)
1235 (setq elm (cdr elm)))))
1236 ;; If this is a test just for exact match, return nil ot t
1237 (if (and (equal pascal-flag 'lambda) (not (equal match 't)))
1240 ;; If flag is t, this was called by all-completions. Return
1241 ;; list of all possible completions
1245 (defvar pascal-last-word-numb 0)
1246 (defvar pascal-last-word-shown nil)
1247 (defvar pascal-last-completions nil)
1249 (defun pascal-complete-word ()
1250 "Complete word at current point.
1251 \(See also `pascal-toggle-completions', `pascal-type-keywords',
1252 `pascal-start-keywords' and `pascal-separator-keywords'.)"
1254 (let* ((b (save-excursion (skip-chars-backward "a-zA-Z0-9_") (point)))
1255 (e (save-excursion (skip-chars-forward "a-zA-Z0-9_") (point)))
1256 (pascal-str (buffer-substring b e))
1257 ;; The following variable is used in pascal-completion
1258 (pascal-buffer-to-use (current-buffer))
1259 (allcomp (if (and pascal-toggle-completions
1260 (string= pascal-last-word-shown pascal-str))
1261 pascal-last-completions
1262 (all-completions pascal-str 'pascal-completion)))
1263 (match (if pascal-toggle-completions
1265 pascal-str (mapcar '(lambda (elm)
1266 (cons elm 0)) allcomp)))))
1267 ;; Delete old string
1270 ;; Toggle-completions inserts whole labels
1271 (if pascal-toggle-completions
1273 ;; Update entry number in list
1274 (setq pascal-last-completions allcomp
1275 pascal-last-word-numb
1276 (if (>= pascal-last-word-numb (1- (length allcomp)))
1278 (1+ pascal-last-word-numb)))
1279 (setq pascal-last-word-shown (elt allcomp pascal-last-word-numb))
1280 ;; Display next match or same string if no match was found
1281 (if (not (null allcomp))
1282 (insert "" pascal-last-word-shown)
1283 (insert "" pascal-str)
1284 (message "(No match)")))
1285 ;; The other form of completion does not necessarly do that.
1287 ;; Insert match if found, or the original string if no match
1288 (if (or (null match) (equal match 't))
1289 (progn (insert "" pascal-str)
1290 (message "(No match)"))
1292 ;; Give message about current status of completion
1293 (cond ((equal match 't)
1294 (if (not (null (cdr allcomp)))
1295 (message "(Complete but not unique)")
1296 (message "(Sole completion)")))
1297 ;; Display buffer if the current completion didn't help
1298 ;; on completing the label.
1299 ((and (not (null (cdr allcomp))) (= (length pascal-str)
1301 (with-output-to-temp-buffer "*Completions*"
1302 (display-completion-list allcomp))
1303 ;; Wait for a keypress. Then delete *Completion* window
1304 (momentary-string-display "" (point))
1305 (delete-window (get-buffer-window (get-buffer "*Completions*")))
1308 (defun pascal-show-completions ()
1309 "Show all possible completions at current point."
1311 (let* ((b (save-excursion (skip-chars-backward "a-zA-Z0-9_") (point)))
1312 (e (save-excursion (skip-chars-forward "a-zA-Z0-9_") (point)))
1313 (pascal-str (buffer-substring b e))
1314 ;; The following variable is used in pascal-completion
1315 (pascal-buffer-to-use (current-buffer))
1316 (allcomp (if (and pascal-toggle-completions
1317 (string= pascal-last-word-shown pascal-str))
1318 pascal-last-completions
1319 (all-completions pascal-str 'pascal-completion))))
1320 ;; Show possible completions in a temporary buffer.
1321 (with-output-to-temp-buffer "*Completions*"
1322 (display-completion-list allcomp))
1323 ;; Wait for a keypress. Then delete *Completion* window
1324 (momentary-string-display "" (point))
1325 (delete-window (get-buffer-window (get-buffer "*Completions*")))))
1328 (defun pascal-get-default-symbol ()
1329 "Return symbol around current point as a string."
1331 (buffer-substring (progn
1332 (skip-chars-backward " \t")
1333 (skip-chars-backward "a-zA-Z0-9_")
1336 (skip-chars-forward "a-zA-Z0-9_")
1339 (defun pascal-build-defun-re (str &optional arg)
1340 "Return function/procedure starting with STR as regular expression.
1341 With optional second arg non-nil, STR is the complete name of the instruction."
1343 (concat "^\\(function\\|procedure\\)[ \t]+\\(" str "\\)\\>")
1344 (concat "^\\(function\\|procedure\\)[ \t]+\\(" str "[a-zA-Z0-9_]*\\)\\>")))
1346 ;; Function passed to completing-read, try-completion or
1347 ;; all-completions to get completion on any function name. If
1348 ;; predicate is non-nil, it must be a function to be called for every
1349 ;; match to check if this should really be a match. If flag is t, the
1350 ;; function returns a list of all possible completions. If it is nil
1351 ;; it returns a string, the longest possible completion, or t if STR
1352 ;; is an exact match. If flag is 'lambda, the function returns t if
1353 ;; STR is an exact match, nil otherwise.
1355 (defun pascal-comp-defun (pascal-str pascal-pred pascal-flag)
1357 (let ((pascal-all nil)
1360 ;; Set buffer to use for searching labels. This should be set
1361 ;; within functins which use pascal-completions
1362 (set-buffer pascal-buffer-to-use)
1364 (let ((pascal-str pascal-str))
1365 ;; Build regular expression for functions
1366 (if (string= pascal-str "")
1367 (setq pascal-str (pascal-build-defun-re "[a-zA-Z_]"))
1368 (setq pascal-str (pascal-build-defun-re pascal-str)))
1369 (goto-char (point-min))
1371 ;; Build a list of all possible completions
1372 (while (re-search-forward pascal-str nil t)
1373 (setq match (buffer-substring (match-beginning 2) (match-end 2)))
1374 (if (or (null pascal-pred)
1375 (funcall pascal-pred match))
1376 (setq pascal-all (cons match pascal-all)))))
1378 ;; Now we have built a list of all matches. Give response to caller
1379 (pascal-completion-response))))
1381 (defun pascal-goto-defun ()
1382 "Move to specified Pascal function/procedure.
1383 The default is a name found in the buffer around point."
1385 (let* ((default (pascal-get-default-symbol))
1386 ;; The following variable is used in pascal-comp-function
1387 (pascal-buffer-to-use (current-buffer))
1388 (default (if (pascal-comp-defun default nil 'lambda)
1390 (label (if (not (string= default ""))
1391 ;; Do completion with default
1392 (completing-read (concat "Label: (default " default ") ")
1393 'pascal-comp-defun nil t "")
1394 ;; There is no default value. Complete without it
1395 (completing-read "Label: "
1396 'pascal-comp-defun nil t ""))))
1397 ;; If there was no response on prompt, use default value
1398 (if (string= label "")
1399 (setq label default))
1400 ;; Goto right place in buffer if label is not an empty string
1401 (or (string= label "")
1403 (goto-char (point-min))
1404 (re-search-forward (pascal-build-defun-re label t))
1405 (beginning-of-line)))))
1410 ;;; Pascal-outline-mode
1412 (defvar pascal-outline-map nil "Keymap used in Pascal Outline mode.")
1414 (if pascal-outline-map
1416 (if (boundp 'set-keymap-name)
1417 (set-keymap-name pascal-outline-map 'pascal-outline-map))
1418 (if (not (boundp 'set-keymap-parent))
1419 (setq pascal-outline-map (copy-keymap pascal-mode-map))
1420 (setq pascal-outline-map (make-sparse-keymap))
1421 (set-keymap-parent pascal-outline-map pascal-mode-map))
1422 (define-key pascal-outline-map "\M-\C-a" 'pascal-outline-prev-defun)
1423 (define-key pascal-outline-map "\M-\C-e" 'pascal-outline-next-defun)
1424 (define-key pascal-outline-map "\C-c\C-d" 'pascal-outline-goto-defun)
1425 (define-key pascal-outline-map "\C-c\C-s" 'pascal-show-all)
1426 (define-key pascal-outline-map "\C-c\C-h" 'pascal-hide-other-defuns))
1428 (defvar pascal-outline-mode nil "Non-nil while using Pascal Outline mode.")
1429 (make-variable-buffer-local 'pascal-outline-mode)
1430 (set-default 'pascal-outline-mode nil)
1431 (if (not (assoc 'pascal-outline-mode minor-mode-alist))
1432 (setq minor-mode-alist (append minor-mode-alist
1433 (list '(pascal-outline-mode " Outl")))))
1435 (defun pascal-outline (&optional arg)
1436 "Outline-line minor mode for Pascal mode.
1437 When in Pascal Outline mode, portions
1438 of the text being edited may be made invisible. \\<pascal-outline-map>
1440 Pascal Outline mode provides some additional commands.
1442 \\[pascal-outline-prev-defun]\
1443 \t- Move to previous function/procedure, hiding everything else.
1444 \\[pascal-outline-next-defun]\
1445 \t- Move to next function/procedure, hiding everything else.
1446 \\[pascal-outline-goto-defun]\
1447 \t- Goto function/procedure prompted for in minibuffer,
1448 \t hide all other functions.
1449 \\[pascal-show-all]\t- Show the whole buffer.
1450 \\[pascal-hide-other-defuns]\
1451 \t- Hide everything but the current function (function under the cursor).
1452 \\[pascal-outline]\t- Leave pascal-outline-mode."
1454 (setq pascal-outline-mode
1455 (if (null arg) (not pascal-outline-mode) t))
1456 (if (boundp 'redraw-mode-line)
1458 (if pascal-outline-mode
1460 (setq selective-display t)
1461 (use-local-map pascal-outline-map))
1463 (setq selective-display nil)
1465 (use-local-map pascal-mode-map))))
1467 (defun pascal-outline-change (b e pascal-flag)
1468 (let ((modp (buffer-modified-p)))
1470 (subst-char-in-region b e (if (= pascal-flag ?\n)
1471 ?\^M ?\n) pascal-flag)
1472 (set-buffer-modified-p modp))))
1474 (defun pascal-show-all ()
1475 "Show all of the text in the buffer."
1477 (pascal-outline-change (point-min) (point-max) ?\n))
1479 (defun pascal-hide-other-defuns ()
1480 "Show only the current defun."
1483 (let ((beg (progn (if (not (looking-at "\\(function\\|procedure\\)\\>"))
1484 (pascal-beg-of-defun))
1486 (end (progn (pascal-end-of-defun)
1488 (search-forward "\n\\|\^M" nil t)
1490 (opoint (point-min)))
1491 (goto-char (point-min))
1493 ;; Hide all functions before current function
1494 (while (re-search-forward "^\\(function\\|procedure\\)\\>" beg 'move)
1495 (pascal-outline-change opoint (1- (match-beginning 0)) ?\^M)
1496 (setq opoint (point))
1497 ;; Functions may be nested
1498 (if (> (progn (pascal-end-of-defun) (point)) beg)
1499 (goto-char opoint)))
1501 (pascal-outline-change opoint (1- beg) ?\^M))
1503 ;; Show current function
1504 (pascal-outline-change beg end ?\n)
1505 ;; Hide nested functions
1507 (while (re-search-forward "^\\(function\\|procedure\\)\\>" end 'move)
1508 (setq opoint (point))
1509 (pascal-end-of-defun)
1510 (pascal-outline-change opoint (point) ?\^M))
1515 ;; Hide all function after current function
1516 (while (re-search-forward "^\\(function\\|procedure\\)\\>" nil 'move)
1517 (pascal-outline-change opoint (1- (match-beginning 0)) ?\^M)
1518 (setq opoint (point))
1519 (pascal-end-of-defun))
1520 (pascal-outline-change opoint (point-max) ?\^M)
1522 ;; Hide main program
1523 (if (< (progn (forward-line -1) (point)) end)
1526 (pascal-end-of-defun)
1528 (pascal-outline-change (point) (point-max) ?\^M))))))
1530 (defun pascal-outline-next-defun ()
1531 "Move to next function/procedure, hiding all others."
1533 (pascal-end-of-defun)
1534 (pascal-hide-other-defuns))
1536 (defun pascal-outline-prev-defun ()
1537 "Move to previous function/procedure, hiding all others."
1539 (pascal-beg-of-defun)
1540 (pascal-hide-other-defuns))
1542 (defun pascal-outline-goto-defun ()
1543 "Move to specified function/procedure, hiding all others."
1546 (pascal-hide-other-defuns))
1548 ;;; pascal.el ends here