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be010748 | 1 | ;;; pascal.el --- major mode for editing pascal source in Emacs |
1a2b6c52 | 2 | |
034babe1 | 3 | ;; Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002 |
5df4f04c | 4 | ;; 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 |
1ba983e8 | 5 | ;; Free Software Foundation, Inc. |
1a2b6c52 | 6 | |
9f92e5d9 | 7 | ;; Author: Espen Skoglund <esk@gnu.org> |
be010748 | 8 | ;; Keywords: languages |
1a2b6c52 | 9 | |
be010748 | 10 | ;; This file is part of GNU Emacs. |
1a2b6c52 | 11 | |
b1fc2b50 | 12 | ;; GNU Emacs is free software: you can redistribute it and/or modify |
be010748 | 13 | ;; it under the terms of the GNU General Public License as published by |
b1fc2b50 GM |
14 | ;; the Free Software Foundation, either version 3 of the License, or |
15 | ;; (at your option) any later version. | |
1a2b6c52 | 16 | |
e451cded | 17 | ;; GNU Emacs is distributed in the hope that it will be useful, |
be010748 RS |
18 | ;; but WITHOUT ANY WARRANTY; without even the implied warranty of |
19 | ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
20 | ;; GNU General Public License for more details. | |
1a2b6c52 | 21 | |
be010748 | 22 | ;; You should have received a copy of the GNU General Public License |
b1fc2b50 | 23 | ;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. |
1a2b6c52 RS |
24 | |
25 | ;;; Commentary: | |
26 | ||
b578f267 EN |
27 | ;; USAGE |
28 | ;; ===== | |
da4ce263 | 29 | |
b578f267 EN |
30 | ;; Emacs should enter Pascal mode when you find a Pascal source file. |
31 | ;; When you have entered Pascal mode, you may get more info by pressing | |
32 | ;; C-h m. You may also get online help describing various functions by: | |
33 | ;; C-h f <Name of function you want described> | |
da4ce263 | 34 | |
b578f267 EN |
35 | ;; If you want to customize Pascal mode to fit you better, you may add |
36 | ;; these lines (the values of the variables presented here are the defaults): | |
37 | ;; | |
38 | ;; ;; User customization for Pascal mode | |
39 | ;; (setq pascal-indent-level 3 | |
40 | ;; pascal-case-indent 2 | |
41 | ;; pascal-auto-newline nil | |
42 | ;; pascal-tab-always-indent t | |
43 | ;; pascal-auto-endcomments t | |
44 | ;; pascal-auto-lineup '(all) | |
45 | ;; pascal-toggle-completions nil | |
a1506d29 | 46 | ;; pascal-type-keywords '("array" "file" "packed" "char" |
f80235e3 | 47 | ;; "integer" "real" "string" "record") |
b578f267 | 48 | ;; pascal-start-keywords '("begin" "end" "function" "procedure" |
f80235e3 RS |
49 | ;; "repeat" "until" "while" "read" "readln" |
50 | ;; "reset" "rewrite" "write" "writeln") | |
b578f267 | 51 | ;; pascal-separator-keywords '("downto" "else" "mod" "div" "then")) |
1a2b6c52 | 52 | |
b578f267 EN |
53 | ;; KNOWN BUGS / BUGREPORTS |
54 | ;; ======================= | |
55 | ;; As far as I know, there are no bugs in the current version of this | |
56 | ;; package. This may not be true however, since I never use this mode | |
57 | ;; myself and therefore would never notice them anyway. If you do | |
9f92e5d9 GM |
58 | ;; find any bugs, you may submit them to: esk@gnu.org as well as to |
59 | ;; bug-gnu-emacs@gnu.org. | |
da4ce263 RS |
60 | \f |
61 | ;;; Code: | |
1a2b6c52 | 62 | |
3bb8691b JB |
63 | (eval-when-compile (require 'cl)) |
64 | ||
f0cca206 | 65 | (defgroup pascal nil |
abefd511 | 66 | "Major mode for editing Pascal source in Emacs." |
8ec3bce0 | 67 | :link '(custom-group-link :tag "Font Lock Faces group" font-lock-faces) |
f0cca206 RS |
68 | :group 'languages) |
69 | ||
1a2b6c52 RS |
70 | (defvar pascal-mode-abbrev-table nil |
71 | "Abbrev table in use in Pascal-mode buffers.") | |
72 | (define-abbrev-table 'pascal-mode-abbrev-table ()) | |
73 | ||
86ac52df SM |
74 | (defvar pascal-mode-map |
75 | (let ((map (make-sparse-keymap))) | |
76 | (define-key map ";" 'electric-pascal-semi-or-dot) | |
77 | (define-key map "." 'electric-pascal-semi-or-dot) | |
78 | (define-key map ":" 'electric-pascal-colon) | |
79 | (define-key map "=" 'electric-pascal-equal) | |
80 | (define-key map "#" 'electric-pascal-hash) | |
81 | (define-key map "\r" 'electric-pascal-terminate-line) | |
82 | (define-key map "\t" 'electric-pascal-tab) | |
83 | (define-key map "\M-\t" 'pascal-complete-word) | |
84 | (define-key map "\M-?" 'pascal-show-completions) | |
85 | (define-key map "\177" 'backward-delete-char-untabify) | |
86 | (define-key map "\M-\C-h" 'pascal-mark-defun) | |
87 | (define-key map "\C-c\C-b" 'pascal-insert-block) | |
88 | (define-key map "\M-*" 'pascal-star-comment) | |
89 | (define-key map "\C-c\C-c" 'pascal-comment-area) | |
90 | (define-key map "\C-c\C-u" 'pascal-uncomment-area) | |
91 | (define-key map "\M-\C-a" 'pascal-beg-of-defun) | |
92 | (define-key map "\M-\C-e" 'pascal-end-of-defun) | |
93 | (define-key map "\C-c\C-d" 'pascal-goto-defun) | |
94 | (define-key map "\C-c\C-o" 'pascal-outline-mode) | |
95 | ;; A command to change the whole buffer won't be used terribly | |
96 | ;; often, so no need for a key binding. | |
97 | ;; (define-key map "\C-cd" 'pascal-downcase-keywords) | |
98 | ;; (define-key map "\C-cu" 'pascal-upcase-keywords) | |
99 | ;; (define-key map "\C-cc" 'pascal-capitalize-keywords) | |
100 | map) | |
1a2b6c52 | 101 | "Keymap used in Pascal mode.") |
69b354eb RS |
102 | |
103 | (defvar pascal-imenu-generic-expression | |
099175be | 104 | '((nil "^[ \t]*\\(function\\|procedure\\)[ \t\n]+\\([a-zA-Z0-9_.:]+\\)" 2)) |
69b354eb | 105 | "Imenu expression for Pascal-mode. See `imenu-generic-expression'.") |
e936de0b | 106 | |
da4ce263 | 107 | (defvar pascal-keywords |
a1506d29 JB |
108 | '("and" "array" "begin" "case" "const" "div" "do" "downto" "else" "end" |
109 | "file" "for" "function" "goto" "if" "in" "label" "mod" "nil" "not" "of" | |
110 | "or" "packed" "procedure" "program" "record" "repeat" "set" "then" "to" | |
da4ce263 RS |
111 | "type" "until" "var" "while" "with" |
112 | ;; The following are not standard in pascal, but widely used. | |
113 | "get" "put" "input" "output" "read" "readln" "reset" "rewrite" "write" | |
114 | "writeln")) | |
115 | ||
116 | ;;; | |
117 | ;;; Regular expressions used to calculate indent, etc. | |
118 | ;;; | |
119 | (defconst pascal-symbol-re "\\<[a-zA-Z_][a-zA-Z_0-9.]*\\>") | |
120 | (defconst pascal-beg-block-re "\\<\\(begin\\|case\\|record\\|repeat\\)\\>") | |
121 | (defconst pascal-end-block-re "\\<\\(end\\|until\\)\\>") | |
122 | (defconst pascal-declaration-re "\\<\\(const\\|label\\|type\\|var\\)\\>") | |
27b53c17 | 123 | (defconst pascal-progbeg-re "\\<\\program\\>") |
da4ce263 | 124 | (defconst pascal-defun-re "\\<\\(function\\|procedure\\|program\\)\\>") |
7e0dd87e | 125 | (defconst pascal-sub-block-re "\\<\\(if\\|else\\|for\\|while\\|with\\)\\>") |
f6807db3 | 126 | (defconst pascal-noindent-re "\\<\\(begin\\|end\\|until\\|else\\)\\>") |
da4ce263 RS |
127 | (defconst pascal-nosemi-re "\\<\\(begin\\|repeat\\|then\\|do\\|else\\)\\>") |
128 | (defconst pascal-autoindent-lines-re | |
129 | "\\<\\(label\\|var\\|type\\|const\\|until\\|end\\|begin\\|repeat\\|else\\)\\>") | |
130 | ||
131 | ;;; Strings used to mark beginning and end of excluded text | |
132 | (defconst pascal-exclude-str-start "{-----\\/----- EXCLUDED -----\\/-----") | |
133 | (defconst pascal-exclude-str-end " -----/\\----- EXCLUDED -----/\\-----}") | |
1a2b6c52 | 134 | |
86ac52df SM |
135 | (defvar pascal-mode-syntax-table |
136 | (let ((st (make-syntax-table))) | |
137 | (modify-syntax-entry ?\\ "." st) | |
138 | (modify-syntax-entry ?\( "()1" st) | |
139 | (modify-syntax-entry ?\) ")(4" st) | |
140 | ;; This used to use comment-syntax `b'. But the only document I could | |
141 | ;; find about the syntax of Pascal's comments said that (* ... } is | |
142 | ;; a valid comment, just as { ... *) or (* ... *) or { ... }. | |
143 | (modify-syntax-entry ?* ". 23" st) | |
144 | (modify-syntax-entry ?{ "<" st) | |
145 | (modify-syntax-entry ?} ">" st) | |
146 | (modify-syntax-entry ?+ "." st) | |
147 | (modify-syntax-entry ?- "." st) | |
148 | (modify-syntax-entry ?= "." st) | |
149 | (modify-syntax-entry ?% "." st) | |
150 | (modify-syntax-entry ?< "." st) | |
151 | (modify-syntax-entry ?> "." st) | |
152 | (modify-syntax-entry ?& "." st) | |
153 | (modify-syntax-entry ?| "." st) | |
154 | (modify-syntax-entry ?_ "_" st) | |
155 | (modify-syntax-entry ?\' "\"" st) | |
156 | st) | |
1a2b6c52 RS |
157 | "Syntax table in use in Pascal-mode buffers.") |
158 | ||
86ac52df | 159 | |
da4ce263 | 160 | |
f80235e3 | 161 | (defconst pascal-font-lock-keywords (purecopy |
210cf16d | 162 | (list |
f80235e3 RS |
163 | '("^[ \t]*\\(function\\|pro\\(cedure\\|gram\\)\\)\\>[ \t]*\\([a-z]\\)" |
164 | 1 font-lock-keyword-face) | |
165 | '("^[ \t]*\\(function\\|pro\\(cedure\\|gram\\)\\)\\>[ \t]*\\([a-z][a-z0-9_]*\\)" | |
166 | 3 font-lock-function-name-face t) | |
210cf16d RS |
167 | ; ("type" "const" "real" "integer" "char" "boolean" "var" |
168 | ; "record" "array" "file") | |
169 | (cons (concat "\\<\\(array\\|boolean\\|c\\(har\\|onst\\)\\|file\\|" | |
170 | "integer\\|re\\(al\\|cord\\)\\|type\\|var\\)\\>") | |
171 | 'font-lock-type-face) | |
883212ce | 172 | '("\\<\\(label\\|external\\|forward\\)\\>" . font-lock-constant-face) |
f80235e3 | 173 | '("\\<\\([0-9]+\\)[ \t]*:" 1 font-lock-function-name-face) |
210cf16d RS |
174 | ; ("of" "to" "for" "if" "then" "else" "case" "while" |
175 | ; "do" "until" "and" "or" "not" "in" "with" "repeat" "begin" "end") | |
176 | (concat "\\<\\(" | |
177 | "and\\|begin\\|case\\|do\\|e\\(lse\\|nd\\)\\|for\\|i[fn]\\|" | |
178 | "not\\|o[fr]\\|repeat\\|t\\(hen\\|o\\)\\|until\\|w\\(hile\\|ith\\)" | |
179 | "\\)\\>") | |
180 | '("\\<\\(goto\\)\\>[ \t]*\\([0-9]+\\)?" | |
f80235e3 RS |
181 | 1 font-lock-keyword-face) |
182 | '("\\<\\(goto\\)\\>[ \t]*\\([0-9]+\\)?" | |
183 | 2 font-lock-keyword-face t))) | |
210cf16d | 184 | "Additional expressions to highlight in Pascal mode.") |
f80235e3 | 185 | (put 'pascal-mode 'font-lock-defaults '(pascal-font-lock-keywords nil t)) |
210cf16d | 186 | |
f0cca206 RS |
187 | (defcustom pascal-indent-level 3 |
188 | "*Indentation of Pascal statements with respect to containing block." | |
189 | :type 'integer | |
190 | :group 'pascal) | |
191 | ||
192 | (defcustom pascal-case-indent 2 | |
193 | "*Indentation for case statements." | |
194 | :type 'integer | |
195 | :group 'pascal) | |
196 | ||
197 | (defcustom pascal-auto-newline nil | |
198 | "*Non-nil means automatically insert newlines in certain cases. | |
199 | These include after semicolons and after the punctuation mark after an `end'." | |
200 | :type 'boolean | |
201 | :group 'pascal) | |
202 | ||
27b53c17 RS |
203 | (defcustom pascal-indent-nested-functions t |
204 | "*Non-nil means nested functions are indented." | |
205 | :type 'boolean | |
206 | :group 'pascal) | |
207 | ||
f0cca206 RS |
208 | (defcustom pascal-tab-always-indent t |
209 | "*Non-nil means TAB in Pascal mode should always reindent the current line. | |
210 | If this is nil, TAB inserts a tab if it is at the end of the line | |
211 | and follows non-whitespace text." | |
212 | :type 'boolean | |
213 | :group 'pascal) | |
214 | ||
215 | (defcustom pascal-auto-endcomments t | |
216 | "*Non-nil means automatically insert comments after certain `end's. | |
217 | Specifically, this is done after the ends of cases statements and functions. | |
218 | The name of the function or case is included between the braces." | |
219 | :type 'boolean | |
220 | :group 'pascal) | |
221 | ||
222 | (defcustom pascal-auto-lineup '(all) | |
3a3ee445 RS |
223 | "*List of contexts where auto lineup of :'s or ='s should be done. |
224 | Elements can be of type: 'paramlist', 'declaration' or 'case', which will | |
225 | do auto lineup in parameterlist, declarations or case-statements | |
226 | respectively. The word 'all' will do all lineups. '(case paramlist) for | |
227 | instance will do lineup in case-statements and parameterlist, while '(all) | |
f0cca206 | 228 | will do all lineups." |
27b53c17 RS |
229 | :type '(set :extra-offset 8 |
230 | (const :tag "Everything" all) | |
231 | (const :tag "Parameter lists" paramlist) | |
232 | (const :tag "Decalrations" declaration) | |
233 | (const :tag "Case statements" case)) | |
f0cca206 RS |
234 | :group 'pascal) |
235 | ||
236 | (defcustom pascal-toggle-completions nil | |
105ad0da RS |
237 | "*Non-nil means \\<pascal-mode-map>\\[pascal-complete-word] should try all possible completions one by one. |
238 | Repeated use of \\[pascal-complete-word] will show you all of them. | |
239 | Normally, when there is more than one possible completion, | |
f0cca206 RS |
240 | it displays a list of all possible completions." |
241 | :type 'boolean | |
242 | :group 'pascal) | |
3a3ee445 | 243 | |
f0cca206 | 244 | (defcustom pascal-type-keywords |
da4ce263 RS |
245 | '("array" "file" "packed" "char" "integer" "real" "string" "record") |
246 | "*Keywords for types used when completing a word in a declaration or parmlist. | |
f0cca206 RS |
247 | These include integer, real, char, etc. |
248 | The types defined within the Pascal program | |
249 | are handled in another way, and should not be added to this list." | |
250 | :type '(repeat (string :tag "Keyword")) | |
251 | :group 'pascal) | |
3a3ee445 | 252 | |
f0cca206 | 253 | (defcustom pascal-start-keywords |
da4ce263 RS |
254 | '("begin" "end" "function" "procedure" "repeat" "until" "while" |
255 | "read" "readln" "reset" "rewrite" "write" "writeln") | |
256 | "*Keywords to complete when standing at the first word of a statement. | |
f0cca206 | 257 | These are keywords such as begin, repeat, until, readln. |
da4ce263 | 258 | The procedures and variables defined within the Pascal program |
3090ac12 | 259 | are handled in another way, and should not be added to this list." |
f0cca206 RS |
260 | :type '(repeat (string :tag "Keyword")) |
261 | :group 'pascal) | |
3a3ee445 | 262 | |
f0cca206 | 263 | (defcustom pascal-separator-keywords |
da4ce263 RS |
264 | '("downto" "else" "mod" "div" "then") |
265 | "*Keywords to complete when NOT standing at the first word of a statement. | |
f0cca206 RS |
266 | These are keywords such as downto, else, mod, then. |
267 | Variables and function names defined within the Pascal program | |
268 | are handled in another way, and should not be added to this list." | |
269 | :type '(repeat (string :tag "Keyword")) | |
270 | :group 'pascal) | |
271 | ||
da4ce263 RS |
272 | |
273 | ;;; | |
274 | ;;; Macros | |
275 | ;;; | |
276 | ||
277 | (defsubst pascal-get-beg-of-line (&optional arg) | |
278 | (save-excursion | |
279 | (beginning-of-line arg) | |
280 | (point))) | |
281 | ||
282 | (defsubst pascal-get-end-of-line (&optional arg) | |
283 | (save-excursion | |
284 | (end-of-line arg) | |
285 | (point))) | |
286 | ||
287 | (defun pascal-declaration-end () | |
288 | (let ((nest 1)) | |
289 | (while (and (> nest 0) | |
a1506d29 JB |
290 | (re-search-forward |
291 | "[:=]\\|\\(\\<record\\>\\)\\|\\(\\<end\\>\\)" | |
da4ce263 RS |
292 | (save-excursion (end-of-line 2) (point)) t)) |
293 | (cond ((match-beginning 1) (setq nest (1+ nest))) | |
2e952aac RS |
294 | ((match-beginning 2) (setq nest (1- nest))) |
295 | ((looking-at "[^(\n]+)") (setq nest 0)))))) | |
da4ce263 | 296 | |
3a3ee445 | 297 | |
da4ce263 RS |
298 | (defun pascal-declaration-beg () |
299 | (let ((nest 1)) | |
300 | (while (and (> nest 0) | |
3a3ee445 | 301 | (re-search-backward "[:=]\\|\\<\\(type\\|var\\|label\\|const\\)\\>\\|\\(\\<record\\>\\)\\|\\(\\<end\\>\\)" (pascal-get-beg-of-line 0) t)) |
da4ce263 RS |
302 | (cond ((match-beginning 1) (setq nest 0)) |
303 | ((match-beginning 2) (setq nest (1- nest))) | |
304 | ((match-beginning 3) (setq nest (1+ nest))))) | |
305 | (= nest 0))) | |
3a3ee445 | 306 | |
a1506d29 | 307 | |
da4ce263 RS |
308 | (defsubst pascal-within-string () |
309 | (save-excursion | |
310 | (nth 3 (parse-partial-sexp (pascal-get-beg-of-line) (point))))) | |
311 | ||
1a2b6c52 RS |
312 | |
313 | ;;;###autoload | |
314 | (defun pascal-mode () | |
da4ce263 RS |
315 | "Major mode for editing Pascal code. \\<pascal-mode-map> |
316 | TAB indents for Pascal code. Delete converts tabs to spaces as it moves back. | |
317 | ||
318 | \\[pascal-complete-word] completes the word around current point with respect \ | |
319 | to position in code | |
320 | \\[pascal-show-completions] shows all possible completions at this point. | |
321 | ||
322 | Other useful functions are: | |
323 | ||
324 | \\[pascal-mark-defun]\t- Mark function. | |
325 | \\[pascal-insert-block]\t- insert begin ... end; | |
326 | \\[pascal-star-comment]\t- insert (* ... *) | |
327 | \\[pascal-comment-area]\t- Put marked area in a comment, fixing nested comments. | |
328 | \\[pascal-uncomment-area]\t- Uncomment an area commented with \ | |
329 | \\[pascal-comment-area]. | |
330 | \\[pascal-beg-of-defun]\t- Move to beginning of current function. | |
331 | \\[pascal-end-of-defun]\t- Move to end of current function. | |
332 | \\[pascal-goto-defun]\t- Goto function prompted for in the minibuffer. | |
86ac52df | 333 | \\[pascal-outline-mode]\t- Enter `pascal-outline-mode'. |
da4ce263 RS |
334 | |
335 | Variables controlling indentation/edit style: | |
336 | ||
27b53c17 | 337 | pascal-indent-level (default 3) |
da4ce263 | 338 | Indentation of Pascal statements with respect to containing block. |
27b53c17 | 339 | pascal-case-indent (default 2) |
da4ce263 | 340 | Indentation for case statements. |
27b53c17 | 341 | pascal-auto-newline (default nil) |
4a6fd75f KH |
342 | Non-nil means automatically newline after semicolons and the punctuation |
343 | mark after an end. | |
27b53c17 RS |
344 | pascal-indent-nested-functions (default t) |
345 | Non-nil means nested functions are indented. | |
3a3ee445 | 346 | pascal-tab-always-indent (default t) |
1a2b6c52 RS |
347 | Non-nil means TAB in Pascal mode should always reindent the current line, |
348 | regardless of where in the line point is when the TAB command is used. | |
27b53c17 | 349 | pascal-auto-endcomments (default t) |
da4ce263 RS |
350 | Non-nil means a comment { ... } is set after the ends which ends cases and |
351 | functions. The name of the function or case will be set between the braces. | |
27b53c17 | 352 | pascal-auto-lineup (default t) |
e936de0b | 353 | List of contexts where auto lineup of :'s or ='s should be done. |
da4ce263 RS |
354 | |
355 | See also the user variables pascal-type-keywords, pascal-start-keywords and | |
81aca4f4 | 356 | pascal-separator-keywords. |
1a2b6c52 RS |
357 | |
358 | Turning on Pascal mode calls the value of the variable pascal-mode-hook with | |
359 | no args, if that value is non-nil." | |
360 | (interactive) | |
361 | (kill-all-local-variables) | |
362 | (use-local-map pascal-mode-map) | |
363 | (setq major-mode 'pascal-mode) | |
364 | (setq mode-name "Pascal") | |
365 | (setq local-abbrev-table pascal-mode-abbrev-table) | |
366 | (set-syntax-table pascal-mode-syntax-table) | |
367 | (make-local-variable 'indent-line-function) | |
368 | (setq indent-line-function 'pascal-indent-line) | |
e7e09325 | 369 | (make-local-variable 'comment-indent-function) |
da4ce263 | 370 | (setq comment-indent-function 'pascal-indent-comment) |
1a2b6c52 | 371 | (make-local-variable 'parse-sexp-ignore-comments) |
9f51be89 | 372 | (setq parse-sexp-ignore-comments nil) |
ef8c3cf9 KH |
373 | (make-local-variable 'blink-matching-paren-dont-ignore-comments) |
374 | (setq blink-matching-paren-dont-ignore-comments t) | |
1a2b6c52 RS |
375 | (make-local-variable 'case-fold-search) |
376 | (setq case-fold-search t) | |
105ad0da RS |
377 | (make-local-variable 'comment-start) |
378 | (setq comment-start "{") | |
210cf16d RS |
379 | (make-local-variable 'comment-start-skip) |
380 | (setq comment-start-skip "(\\*+ *\\|{ *") | |
381 | (make-local-variable 'comment-end) | |
382 | (setq comment-end "}") | |
69b354eb | 383 | ;; Font lock support |
7fa28db0 SM |
384 | (make-local-variable 'font-lock-defaults) |
385 | (setq font-lock-defaults '(pascal-font-lock-keywords nil t)) | |
69b354eb RS |
386 | ;; Imenu support |
387 | (make-local-variable 'imenu-generic-expression) | |
388 | (setq imenu-generic-expression pascal-imenu-generic-expression) | |
c0b08eb0 | 389 | (setq imenu-case-fold-search t) |
9a969196 | 390 | (run-mode-hooks 'pascal-mode-hook)) |
1a2b6c52 | 391 | |
da4ce263 RS |
392 | \f |
393 | ||
1a2b6c52 RS |
394 | ;;; |
395 | ;;; Electric functions | |
396 | ;;; | |
1a2b6c52 RS |
397 | (defun electric-pascal-terminate-line () |
398 | "Terminate line and indent next line." | |
399 | (interactive) | |
da4ce263 | 400 | ;; First, check if current line should be indented |
1a2b6c52 RS |
401 | (save-excursion |
402 | (beginning-of-line) | |
403 | (skip-chars-forward " \t") | |
da4ce263 | 404 | (if (looking-at pascal-autoindent-lines-re) |
1a2b6c52 | 405 | (pascal-indent-line))) |
da4ce263 | 406 | (delete-horizontal-space) ; Removes trailing whitespaces |
1a2b6c52 | 407 | (newline) |
da4ce263 | 408 | ;; Indent next line |
1a2b6c52 RS |
409 | (pascal-indent-line) |
410 | ;; Maybe we should set some endcomments | |
411 | (if pascal-auto-endcomments | |
412 | (pascal-set-auto-comments)) | |
413 | ;; Check if we shall indent inside comment | |
414 | (let ((setstar nil)) | |
415 | (save-excursion | |
416 | (forward-line -1) | |
417 | (skip-chars-forward " \t") | |
da4ce263 | 418 | (cond ((looking-at "\\*[ \t]+)") |
1a2b6c52 RS |
419 | ;; Delete region between `*' and `)' if there is only whitespaces. |
420 | (forward-char 1) | |
da4ce263 | 421 | (delete-horizontal-space)) |
1a2b6c52 RS |
422 | ((and (looking-at "(\\*\\|\\*[^)]") |
423 | (not (save-excursion | |
424 | (search-forward "*)" (pascal-get-end-of-line) t)))) | |
425 | (setq setstar t)))) | |
426 | ;; If last line was a star comment line then this one shall be too. | |
a1506d29 | 427 | (if (null setstar) |
da4ce263 RS |
428 | (pascal-indent-line) |
429 | (insert "* ")))) | |
1a2b6c52 | 430 | |
1a2b6c52 | 431 | |
da4ce263 RS |
432 | (defun electric-pascal-semi-or-dot () |
433 | "Insert `;' or `.' character and reindent the line." | |
1a2b6c52 | 434 | (interactive) |
1ba983e8 | 435 | (insert last-command-event) |
1a2b6c52 RS |
436 | (save-excursion |
437 | (beginning-of-line) | |
438 | (pascal-indent-line)) | |
439 | (if pascal-auto-newline | |
440 | (electric-pascal-terminate-line))) | |
441 | ||
442 | (defun electric-pascal-colon () | |
da4ce263 | 443 | "Insert `:' and do all indentions except line indent on this line." |
1a2b6c52 | 444 | (interactive) |
1ba983e8 | 445 | (insert last-command-event) |
da4ce263 RS |
446 | ;; Do nothing if within string. |
447 | (if (pascal-within-string) | |
448 | () | |
449 | (save-excursion | |
450 | (beginning-of-line) | |
451 | (pascal-indent-line)) | |
452 | (let ((pascal-tab-always-indent nil)) | |
453 | (pascal-indent-command)))) | |
454 | ||
1a2b6c52 | 455 | (defun electric-pascal-equal () |
da4ce263 | 456 | "Insert `=', and do indention if within type declaration." |
1a2b6c52 | 457 | (interactive) |
1ba983e8 | 458 | (insert last-command-event) |
da4ce263 | 459 | (if (eq (car (pascal-calculate-indent)) 'declaration) |
1a2b6c52 RS |
460 | (let ((pascal-tab-always-indent nil)) |
461 | (pascal-indent-command)))) | |
462 | ||
9f51be89 | 463 | (defun electric-pascal-hash () |
4a6fd75f | 464 | "Insert `#', and indent to column 0 if this is a CPP directive." |
9f51be89 | 465 | (interactive) |
1ba983e8 | 466 | (insert last-command-event) |
9f51be89 RS |
467 | (if (save-excursion (beginning-of-line) (looking-at "^[ \t]*#")) |
468 | (save-excursion (beginning-of-line) | |
469 | (delete-horizontal-space)))) | |
470 | ||
1a2b6c52 | 471 | (defun electric-pascal-tab () |
da4ce263 | 472 | "Function called when TAB is pressed in Pascal mode." |
1a2b6c52 | 473 | (interactive) |
9f51be89 RS |
474 | ;; Do nothing if within a string or in a CPP directive. |
475 | (if (or (pascal-within-string) | |
476 | (and (not (bolp)) | |
477 | (save-excursion (beginning-of-line) (eq (following-char) ?#)))) | |
da4ce263 RS |
478 | (insert "\t") |
479 | ;; If pascal-tab-always-indent, indent the beginning of the line. | |
480 | (if pascal-tab-always-indent | |
481 | (save-excursion | |
482 | (beginning-of-line) | |
483 | (pascal-indent-line)) | |
2e952aac RS |
484 | (if (save-excursion |
485 | (skip-chars-backward " \t") | |
486 | (bolp)) | |
487 | (pascal-indent-line) | |
488 | (insert "\t"))) | |
da4ce263 RS |
489 | (pascal-indent-command))) |
490 | ||
491 | \f | |
1a2b6c52 RS |
492 | |
493 | ;;; | |
494 | ;;; Interactive functions | |
495 | ;;; | |
496 | (defun pascal-insert-block () | |
da4ce263 | 497 | "Insert Pascal begin ... end; block in the code with right indentation." |
1a2b6c52 | 498 | (interactive) |
1a2b6c52 RS |
499 | (insert "begin") |
500 | (electric-pascal-terminate-line) | |
501 | (save-excursion | |
6acae80a | 502 | (newline) |
1a2b6c52 RS |
503 | (insert "end;") |
504 | (beginning-of-line) | |
505 | (pascal-indent-line))) | |
506 | ||
507 | (defun pascal-star-comment () | |
da4ce263 | 508 | "Insert Pascal star comment at point." |
1a2b6c52 RS |
509 | (interactive) |
510 | (pascal-indent-line) | |
511 | (insert "(*") | |
512 | (electric-pascal-terminate-line) | |
513 | (save-excursion | |
514 | (electric-pascal-terminate-line) | |
da4ce263 RS |
515 | (delete-horizontal-space) |
516 | (insert ")")) | |
517 | (insert " ")) | |
1a2b6c52 | 518 | |
da4ce263 | 519 | (defun pascal-mark-defun () |
1a2b6c52 | 520 | "Mark the current pascal function (or procedure). |
da4ce263 | 521 | This puts the mark at the end, and point at the beginning." |
1a2b6c52 RS |
522 | (interactive) |
523 | (push-mark (point)) | |
da4ce263 | 524 | (pascal-end-of-defun) |
1a2b6c52 | 525 | (push-mark (point)) |
da4ce263 | 526 | (pascal-beg-of-defun) |
a445370f DN |
527 | (when (featurep 'xemacs) |
528 | (zmacs-activate-region))) | |
1a2b6c52 RS |
529 | |
530 | (defun pascal-comment-area (start end) | |
da4ce263 RS |
531 | "Put the region into a Pascal comment. |
532 | The comments that are in this area are \"deformed\": | |
533 | `*)' becomes `!(*' and `}' becomes `!{'. | |
534 | These deformed comments are returned to normal if you use | |
535 | \\[pascal-uncomment-area] to undo the commenting. | |
536 | ||
537 | The commented area starts with `pascal-exclude-str-start', and ends with | |
538 | `pascal-include-str-end'. But if you change these variables, | |
539 | \\[pascal-uncomment-area] won't recognize the comments." | |
1a2b6c52 RS |
540 | (interactive "r") |
541 | (save-excursion | |
542 | ;; Insert start and endcomments | |
543 | (goto-char end) | |
544 | (if (and (save-excursion (skip-chars-forward " \t") (eolp)) | |
545 | (not (save-excursion (skip-chars-backward " \t") (bolp)))) | |
546 | (forward-line 1) | |
547 | (beginning-of-line)) | |
da4ce263 | 548 | (insert pascal-exclude-str-end) |
1a2b6c52 RS |
549 | (setq end (point)) |
550 | (newline) | |
551 | (goto-char start) | |
552 | (beginning-of-line) | |
da4ce263 | 553 | (insert pascal-exclude-str-start) |
1a2b6c52 RS |
554 | (newline) |
555 | ;; Replace end-comments within commented area | |
556 | (goto-char end) | |
557 | (save-excursion | |
558 | (while (re-search-backward "\\*)" start t) | |
559 | (replace-match "!(*" t t))) | |
560 | (save-excursion | |
561 | (while (re-search-backward "}" start t) | |
562 | (replace-match "!{" t t))))) | |
563 | ||
564 | (defun pascal-uncomment-area () | |
da4ce263 RS |
565 | "Uncomment a commented area; change deformed comments back to normal. |
566 | This command does nothing if the pointer is not in a commented | |
1a2b6c52 RS |
567 | area. See also `pascal-comment-area'." |
568 | (interactive) | |
569 | (save-excursion | |
570 | (let ((start (point)) | |
571 | (end (point))) | |
572 | ;; Find the boundaries of the comment | |
573 | (save-excursion | |
da4ce263 | 574 | (setq start (progn (search-backward pascal-exclude-str-start nil t) |
1a2b6c52 | 575 | (point))) |
da4ce263 | 576 | (setq end (progn (search-forward pascal-exclude-str-end nil t) |
1a2b6c52 RS |
577 | (point)))) |
578 | ;; Check if we're really inside a comment | |
579 | (if (or (equal start (point)) (<= end (point))) | |
580 | (message "Not standing within commented area.") | |
581 | (progn | |
582 | ;; Remove endcomment | |
583 | (goto-char end) | |
584 | (beginning-of-line) | |
585 | (let ((pos (point))) | |
586 | (end-of-line) | |
587 | (delete-region pos (1+ (point)))) | |
588 | ;; Change comments back to normal | |
589 | (save-excursion | |
590 | (while (re-search-backward "!{" start t) | |
591 | (replace-match "}" t t))) | |
592 | (save-excursion | |
593 | (while (re-search-backward "!(\\*" start t) | |
594 | (replace-match "*)" t t))) | |
595 | ;; Remove startcomment | |
596 | (goto-char start) | |
597 | (beginning-of-line) | |
598 | (let ((pos (point))) | |
599 | (end-of-line) | |
600 | (delete-region pos (1+ (point))))))))) | |
601 | ||
da4ce263 RS |
602 | (defun pascal-beg-of-defun () |
603 | "Move backward to the beginning of the current function or procedure." | |
1a2b6c52 | 604 | (interactive) |
da4ce263 RS |
605 | (catch 'found |
606 | (if (not (looking-at (concat "\\s \\|\\s)\\|" pascal-defun-re))) | |
607 | (forward-sexp 1)) | |
608 | (let ((nest 0) (max -1) (func 0) | |
a1506d29 | 609 | (reg (concat pascal-beg-block-re "\\|" |
da4ce263 RS |
610 | pascal-end-block-re "\\|" |
611 | pascal-defun-re))) | |
612 | (while (re-search-backward reg nil 'move) | |
613 | (cond ((let ((state (save-excursion | |
614 | (parse-partial-sexp (point-min) (point))))) | |
615 | (or (nth 3 state) (nth 4 state))) ; Inside string or comment | |
616 | ()) | |
617 | ((match-end 1) ; begin|case|record|repeat | |
618 | (if (and (looking-at "\\<record\\>") (>= max 0)) | |
619 | (setq func (1- func))) | |
620 | (setq nest (1+ nest) | |
621 | max (max nest max))) | |
622 | ((match-end 2) ; end|until | |
623 | (if (and (= nest max) (>= max 0)) | |
624 | (setq func (1+ func))) | |
625 | (setq nest (1- nest))) | |
626 | ((match-end 3) ; function|procedure | |
27b53c17 | 627 | (if (= 0 func) |
da4ce263 RS |
628 | (throw 'found t) |
629 | (setq func (1- func))))))) | |
630 | nil)) | |
631 | ||
632 | (defun pascal-end-of-defun () | |
633 | "Move forward to the end of the current function or procedure." | |
1a2b6c52 | 634 | (interactive) |
da4ce263 RS |
635 | (if (looking-at "\\s ") |
636 | (forward-sexp 1)) | |
637 | (if (not (looking-at pascal-defun-re)) | |
638 | (pascal-beg-of-defun)) | |
639 | (forward-char 1) | |
640 | (let ((nest 0) (func 1) | |
a1506d29 | 641 | (reg (concat pascal-beg-block-re "\\|" |
da4ce263 RS |
642 | pascal-end-block-re "\\|" |
643 | pascal-defun-re))) | |
644 | (while (and (/= func 0) | |
645 | (re-search-forward reg nil 'move)) | |
646 | (cond ((let ((state (save-excursion | |
647 | (parse-partial-sexp (point-min) (point))))) | |
648 | (or (nth 3 state) (nth 4 state))) ; Inside string or comment | |
649 | ()) | |
650 | ((match-end 1) | |
651 | (setq nest (1+ nest)) | |
652 | (if (save-excursion | |
653 | (goto-char (match-beginning 0)) | |
654 | (looking-at "\\<record\\>")) | |
655 | (setq func (1+ func)))) | |
656 | ((match-end 2) | |
657 | (setq nest (1- nest)) | |
658 | (if (= nest 0) | |
659 | (setq func (1- func)))) | |
660 | ((match-end 3) | |
661 | (setq func (1+ func)))))) | |
662 | (forward-line 1)) | |
1a2b6c52 | 663 | |
3a3ee445 RS |
664 | (defun pascal-end-of-statement () |
665 | "Move forward to end of current statement." | |
666 | (interactive) | |
a0bd2457 RS |
667 | (let ((parse-sexp-ignore-comments t) |
668 | (nest 0) pos | |
3a3ee445 RS |
669 | (regexp (concat "\\(" pascal-beg-block-re "\\)\\|\\(" |
670 | pascal-end-block-re "\\)"))) | |
671 | (if (not (looking-at "[ \t\n]")) (forward-sexp -1)) | |
672 | (or (looking-at pascal-beg-block-re) | |
673 | ;; Skip to end of statement | |
674 | (setq pos (catch 'found | |
675 | (while t | |
676 | (forward-sexp 1) | |
677 | (cond ((looking-at "[ \t]*;") | |
678 | (skip-chars-forward "^;") | |
679 | (forward-char 1) | |
680 | (throw 'found (point))) | |
681 | ((save-excursion | |
682 | (forward-sexp -1) | |
683 | (looking-at pascal-beg-block-re)) | |
684 | (goto-char (match-beginning 0)) | |
685 | (throw 'found nil)) | |
686 | ((eobp) | |
687 | (throw 'found (point)))))))) | |
688 | (if (not pos) | |
689 | ;; Skip a whole block | |
690 | (catch 'found | |
691 | (while t | |
692 | (re-search-forward regexp nil 'move) | |
a1506d29 | 693 | (setq nest (if (match-end 1) |
3a3ee445 RS |
694 | (1+ nest) |
695 | (1- nest))) | |
696 | (cond ((eobp) | |
697 | (throw 'found (point))) | |
698 | ((= 0 nest) | |
699 | (throw 'found (pascal-end-of-statement)))))) | |
700 | pos))) | |
701 | ||
1a2b6c52 | 702 | (defun pascal-downcase-keywords () |
da4ce263 | 703 | "Downcase all Pascal keywords in the buffer." |
1a2b6c52 RS |
704 | (interactive) |
705 | (pascal-change-keywords 'downcase-word)) | |
706 | ||
707 | (defun pascal-upcase-keywords () | |
da4ce263 | 708 | "Upcase all Pascal keywords in the buffer." |
1a2b6c52 RS |
709 | (interactive) |
710 | (pascal-change-keywords 'upcase-word)) | |
711 | ||
712 | (defun pascal-capitalize-keywords () | |
da4ce263 | 713 | "Capitalize all Pascal keywords in the buffer." |
1a2b6c52 RS |
714 | (interactive) |
715 | (pascal-change-keywords 'capitalize-word)) | |
716 | ||
da4ce263 | 717 | ;; Change the keywords according to argument. |
1a2b6c52 | 718 | (defun pascal-change-keywords (change-word) |
1a2b6c52 | 719 | (save-excursion |
da4ce263 RS |
720 | (let ((keyword-re (concat "\\<\\(" |
721 | (mapconcat 'identity pascal-keywords "\\|") | |
722 | "\\)\\>"))) | |
723 | (goto-char (point-min)) | |
724 | (while (re-search-forward keyword-re nil t) | |
725 | (funcall change-word -1))))) | |
726 | ||
727 | \f | |
1a2b6c52 RS |
728 | |
729 | ;;; | |
730 | ;;; Other functions | |
731 | ;;; | |
1a2b6c52 | 732 | (defun pascal-set-auto-comments () |
da4ce263 RS |
733 | "Insert `{ case }' or `{ NAME }' on this line if appropriate. |
734 | Insert `{ case }' if there is an `end' on the line which | |
735 | ends a case block. Insert `{ NAME }' if there is an `end' | |
736 | on the line which ends a function or procedure named NAME." | |
1a2b6c52 RS |
737 | (save-excursion |
738 | (forward-line -1) | |
739 | (skip-chars-forward " \t") | |
da4ce263 | 740 | (if (and (looking-at "\\<end;") |
1a2b6c52 RS |
741 | (not (save-excursion |
742 | (end-of-line) | |
da4ce263 | 743 | (search-backward "{" (pascal-get-beg-of-line) t)))) |
81aca4f4 RS |
744 | (let ((type (car (pascal-calculate-indent)))) |
745 | (if (eq type 'declaration) | |
746 | () | |
747 | (if (eq type 'case) | |
748 | ;; This is a case block | |
749 | (progn | |
750 | (end-of-line) | |
751 | (delete-horizontal-space) | |
752 | (insert " { case }")) | |
753 | (let ((nest 1)) | |
754 | ;; Check if this is the end of a function | |
755 | (save-excursion | |
756 | (while (not (or (looking-at pascal-defun-re) (bobp))) | |
757 | (backward-sexp 1) | |
758 | (cond ((looking-at pascal-beg-block-re) | |
759 | (setq nest (1- nest))) | |
760 | ((looking-at pascal-end-block-re) | |
761 | (setq nest (1+ nest))))) | |
762 | (if (bobp) | |
763 | (setq nest 1))) | |
764 | (if (zerop nest) | |
765 | (progn | |
766 | (end-of-line) | |
767 | (delete-horizontal-space) | |
768 | (insert " { ") | |
769 | (let (b e) | |
770 | (save-excursion | |
771 | (setq b (progn (pascal-beg-of-defun) | |
772 | (skip-chars-forward "^ \t") | |
773 | (skip-chars-forward " \t") | |
774 | (point)) | |
775 | e (progn (skip-chars-forward "a-zA-Z0-9_") | |
776 | (point)))) | |
777 | (insert-buffer-substring (current-buffer) b e)) | |
778 | (insert " }")))))))))) | |
1a2b6c52 | 779 | |
da4ce263 RS |
780 | \f |
781 | ||
1a2b6c52 | 782 | ;;; |
da4ce263 RS |
783 | ;;; Indentation |
784 | ;;; | |
785 | (defconst pascal-indent-alist | |
786 | '((block . (+ ind pascal-indent-level)) | |
787 | (case . (+ ind pascal-case-indent)) | |
9f51be89 | 788 | (caseblock . ind) (cpp . 0) |
da4ce263 RS |
789 | (declaration . (+ ind pascal-indent-level)) |
790 | (paramlist . (pascal-indent-paramlist t)) | |
9f92e5d9 | 791 | (comment . (pascal-indent-comment)) |
da4ce263 | 792 | (defun . ind) (contexp . ind) |
27b53c17 | 793 | (unknown . ind) (string . 0) (progbeg . 0))) |
da4ce263 | 794 | |
1a2b6c52 | 795 | (defun pascal-indent-command () |
da4ce263 RS |
796 | "Indent for special part of code." |
797 | (let* ((indent-str (pascal-calculate-indent)) | |
86ac52df | 798 | (type (car indent-str))) |
3a3ee445 RS |
799 | (cond ((and (eq type 'paramlist) |
800 | (or (memq 'all pascal-auto-lineup) | |
801 | (memq 'paramlist pascal-auto-lineup))) | |
da4ce263 RS |
802 | (pascal-indent-paramlist) |
803 | (pascal-indent-paramlist)) | |
3a3ee445 RS |
804 | ((and (eq type 'declaration) |
805 | (or (memq 'all pascal-auto-lineup) | |
806 | (memq 'declaration pascal-auto-lineup))) | |
da4ce263 | 807 | (pascal-indent-declaration)) |
3a3ee445 RS |
808 | ((and (eq type 'case) (not (looking-at "^[ \t]*$")) |
809 | (or (memq 'all pascal-auto-lineup) | |
810 | (memq 'case pascal-auto-lineup))) | |
da4ce263 RS |
811 | (pascal-indent-case))) |
812 | (if (looking-at "[ \t]+$") | |
813 | (skip-chars-forward " \t")))) | |
1a2b6c52 RS |
814 | |
815 | (defun pascal-indent-line () | |
da4ce263 RS |
816 | "Indent current line as a Pascal statement." |
817 | (let* ((indent-str (pascal-calculate-indent)) | |
818 | (type (car indent-str)) | |
819 | (ind (car (cdr indent-str)))) | |
27b53c17 RS |
820 | ;; Labels should not be indented. |
821 | (if (and (looking-at "^[0-9a-zA-Z]+[ \t]*:[^=]") | |
822 | (not (eq type 'declaration))) | |
da4ce263 RS |
823 | (search-forward ":" nil t)) |
824 | (delete-horizontal-space) | |
27b53c17 RS |
825 | (cond (; Some things should not be indented |
826 | (or (and (eq type 'declaration) (looking-at pascal-declaration-re)) | |
827 | (eq type 'cpp)) | |
828 | ()) | |
829 | (; Other things should have no extra indent | |
830 | (looking-at pascal-noindent-re) | |
831 | (indent-to ind)) | |
832 | (; Nested functions should be indented | |
833 | (looking-at pascal-defun-re) | |
834 | (if (and pascal-indent-nested-functions | |
835 | (eq type 'defun)) | |
836 | (indent-to (+ ind pascal-indent-level)) | |
837 | (indent-to ind))) | |
838 | (; But most lines are treated this way | |
839 | (indent-to (eval (cdr (assoc type pascal-indent-alist)))) | |
840 | )))) | |
da4ce263 RS |
841 | |
842 | (defun pascal-calculate-indent () | |
843 | "Calculate the indent of the current Pascal line. | |
844 | Return a list of two elements: (INDENT-TYPE INDENT-LEVEL)." | |
845 | (save-excursion | |
a0bd2457 RS |
846 | (let* ((parse-sexp-ignore-comments t) |
847 | (oldpos (point)) | |
da4ce263 | 848 | (state (save-excursion (parse-partial-sexp (point-min) (point)))) |
9f51be89 | 849 | (nest 0) (par 0) (complete (looking-at "[ \t]*end\\>")) |
27b53c17 RS |
850 | (elsed (looking-at "[ \t]*else\\>")) (funccnt 0) |
851 | (did-func (looking-at "[ \t]*\\(procedure\\|function\\)\\>")) | |
da4ce263 RS |
852 | (type (catch 'nesting |
853 | ;; Check if inside a string, comment or parenthesis | |
854 | (cond ((nth 3 state) (throw 'nesting 'string)) | |
855 | ((nth 4 state) (throw 'nesting 'comment)) | |
856 | ((> (car state) 0) | |
857 | (goto-char (scan-lists (point) -1 (car state))) | |
9f51be89 RS |
858 | (setq par (1+ (current-column)))) |
859 | ((save-excursion (beginning-of-line) | |
860 | (eq (following-char) ?#)) | |
861 | (throw 'nesting 'cpp))) | |
da4ce263 RS |
862 | ;; Loop until correct indent is found |
863 | (while t | |
864 | (backward-sexp 1) | |
9f51be89 RS |
865 | (cond (;--Escape from case statements |
866 | (and (looking-at "[A-Za-z0-9]+[ \t]*:[^=]") | |
867 | (not complete) | |
868 | (save-excursion (skip-chars-backward " \t") | |
869 | (bolp)) | |
870 | (= (save-excursion | |
871 | (end-of-line) (backward-sexp) (point)) | |
872 | (point)) | |
873 | (> (save-excursion (goto-char oldpos) | |
874 | (beginning-of-line) | |
875 | (point)) | |
876 | (point))) | |
877 | (throw 'nesting 'caseblock)) | |
27b53c17 RS |
878 | (;--Beginning of program |
879 | (looking-at pascal-progbeg-re) | |
880 | (throw 'nesting 'progbeg)) | |
881 | (;--No known statements | |
882 | (bobp) | |
883 | (throw 'nesting 'progbeg)) | |
9f51be89 | 884 | (;--Nest block outwards |
da4ce263 RS |
885 | (looking-at pascal-beg-block-re) |
886 | (if (= nest 0) | |
887 | (cond ((looking-at "case\\>") | |
da4ce263 RS |
888 | (throw 'nesting 'case)) |
889 | ((looking-at "record\\>") | |
890 | (throw 'nesting 'declaration)) | |
f6807db3 | 891 | (t (throw 'nesting 'block))) |
27b53c17 RS |
892 | (if (and (looking-at "record\\>") (= nest 1)) |
893 | (setq funccnt (1- funccnt))) | |
da4ce263 RS |
894 | (setq nest (1- nest)))) |
895 | (;--Nest block inwards | |
896 | (looking-at pascal-end-block-re) | |
f6807db3 RS |
897 | (if (and (looking-at "end\\s ") |
898 | elsed (not complete)) | |
899 | (throw 'nesting 'block)) | |
27b53c17 RS |
900 | (if (= nest 0) |
901 | (setq funccnt (1+ funccnt))) | |
da4ce263 RS |
902 | (setq complete t |
903 | nest (1+ nest))) | |
904 | (;--Defun (or parameter list) | |
27b53c17 RS |
905 | (and (looking-at pascal-defun-re) |
906 | (progn (setq funccnt (1- funccnt) | |
907 | did-func t) | |
908 | (or (bolp) (< funccnt 0)))) | |
909 | ;; Prevent searching whole buffer | |
910 | (if (and (bolp) (>= funccnt 0)) | |
911 | (throw 'nesting 'progbeg)) | |
da4ce263 RS |
912 | (if (= 0 par) |
913 | (throw 'nesting 'defun) | |
914 | (setq par 0) | |
915 | (let ((n 0)) | |
916 | (while (re-search-forward | |
917 | "\\(\\<record\\>\\)\\|\\<end\\>" | |
918 | oldpos t) | |
919 | (if (match-end 1) | |
920 | (setq n (1+ n)) (setq n (1- n)))) | |
921 | (if (> n 0) | |
922 | (throw 'nesting 'declaration) | |
923 | (throw 'nesting 'paramlist))))) | |
924 | (;--Declaration part | |
27b53c17 RS |
925 | (and (looking-at pascal-declaration-re) |
926 | (not did-func) | |
927 | (= funccnt 0)) | |
f6807db3 RS |
928 | (if (save-excursion |
929 | (goto-char oldpos) | |
930 | (forward-line -1) | |
931 | (looking-at "^[ \t]*$")) | |
da4ce263 RS |
932 | (throw 'nesting 'unknown) |
933 | (throw 'nesting 'declaration))) | |
934 | (;--If, else or while statement | |
935 | (and (not complete) | |
936 | (looking-at pascal-sub-block-re)) | |
937 | (throw 'nesting 'block)) | |
938 | (;--Found complete statement | |
939 | (save-excursion (forward-sexp 1) | |
940 | (= (following-char) ?\;)) | |
941 | (setq complete t)) | |
da4ce263 | 942 | ))))) |
9f51be89 | 943 | |
da4ce263 | 944 | ;; Return type of block and indent level. |
a1506d29 | 945 | (if (> par 0) ; Unclosed Parenthesis |
da4ce263 RS |
946 | (list 'contexp par) |
947 | (list type (pascal-indent-level)))))) | |
948 | ||
949 | (defun pascal-indent-level () | |
950 | "Return the indent-level the current statement has. | |
951 | Do not count labels, case-statements or records." | |
1a2b6c52 RS |
952 | (save-excursion |
953 | (beginning-of-line) | |
da4ce263 RS |
954 | (if (looking-at "[ \t]*[0-9a-zA-Z]+[ \t]*:[^=]") |
955 | (search-forward ":" nil t) | |
956 | (if (looking-at ".*=[ \t]*record\\>") | |
957 | (search-forward "=" nil t))) | |
1a2b6c52 RS |
958 | (skip-chars-forward " \t") |
959 | (current-column))) | |
960 | ||
9f92e5d9 GM |
961 | (defun pascal-indent-comment () |
962 | "Return indent for current comment." | |
963 | (save-excursion | |
964 | (re-search-backward "\\((\\*\\)\\|{" nil t) | |
965 | (if (match-beginning 1) | |
966 | (1+ (current-column)) | |
967 | (current-column)))) | |
da4ce263 RS |
968 | |
969 | (defun pascal-indent-case () | |
970 | "Indent within case statements." | |
a0bd2457 RS |
971 | (let ((savepos (point-marker)) |
972 | (end (prog2 | |
81aca4f4 RS |
973 | (end-of-line) |
974 | (point-marker) | |
da4ce263 | 975 | (re-search-backward "\\<case\\>" nil t))) |
86ac52df | 976 | (beg (point)) |
da4ce263 RS |
977 | (ind 0)) |
978 | ;; Get right indent | |
f80235e3 | 979 | (while (< (point) end) |
a1506d29 | 980 | (if (re-search-forward |
81aca4f4 RS |
981 | "^[ \t]*[^ \t,:]+[ \t]*\\(,[ \t]*[^ \t,:]+[ \t]*\\)*:" |
982 | (marker-position end) 'move) | |
983 | (forward-char -1)) | |
f80235e3 | 984 | (if (< (point) end) |
2e952aac RS |
985 | (progn |
986 | (delete-horizontal-space) | |
987 | (if (> (current-column) ind) | |
988 | (setq ind (current-column))) | |
989 | (pascal-end-of-statement)))) | |
da4ce263 RS |
990 | (goto-char beg) |
991 | ;; Indent all case statements | |
f80235e3 | 992 | (while (< (point) end) |
81aca4f4 | 993 | (if (re-search-forward |
9f51be89 | 994 | "^[ \t]*[^][ \t,\\.:]+[ \t]*\\(,[ \t]*[^ \t,:]+[ \t]*\\)*:" |
81aca4f4 | 995 | (marker-position end) 'move) |
da4ce263 RS |
996 | (forward-char -1)) |
997 | (indent-to (1+ ind)) | |
998 | (if (/= (following-char) ?:) | |
999 | () | |
1000 | (forward-char 1) | |
1001 | (delete-horizontal-space) | |
3a3ee445 | 1002 | (insert " ")) |
3a3ee445 | 1003 | (pascal-end-of-statement)) |
a0bd2457 | 1004 | (goto-char savepos))) |
da4ce263 RS |
1005 | |
1006 | (defun pascal-indent-paramlist (&optional arg) | |
1007 | "Indent current line in parameterlist. | |
1008 | If optional arg is non-nil, just return the | |
1009 | indent of the current line in parameterlist." | |
1a2b6c52 | 1010 | (save-excursion |
da4ce263 RS |
1011 | (let* ((oldpos (point)) |
1012 | (stpos (progn (goto-char (scan-lists (point) -1 1)) (point))) | |
1013 | (stcol (1+ (current-column))) | |
a1506d29 | 1014 | (edpos (progn (pascal-declaration-end) |
da4ce263 RS |
1015 | (search-backward ")" (pascal-get-beg-of-line) t) |
1016 | (point))) | |
1017 | (usevar (re-search-backward "\\<var\\>" stpos t))) | |
1018 | (if arg (progn | |
1019 | ;; If arg, just return indent | |
1020 | (goto-char oldpos) | |
1021 | (beginning-of-line) | |
1022 | (if (or (not usevar) (looking-at "[ \t]*var\\>")) | |
1023 | stcol (+ 4 stcol))) | |
1024 | (goto-char stpos) | |
1025 | (forward-char 1) | |
1026 | (delete-horizontal-space) | |
1027 | (if (and usevar (not (looking-at "var\\>"))) | |
1028 | (indent-to (+ 4 stcol))) | |
1029 | (pascal-indent-declaration nil stpos edpos))))) | |
1030 | ||
1031 | (defun pascal-indent-declaration (&optional arg start end) | |
1032 | "Indent current lines as declaration, lining up the `:'s or `='s." | |
1033 | (let ((pos (point-marker))) | |
1034 | (if (and (not (or arg start)) (not (pascal-declaration-beg))) | |
1035 | () | |
a1506d29 | 1036 | (let ((lineup (if (or (looking-at "\\<var\\>\\|\\<record\\>") arg start) |
da4ce263 RS |
1037 | ":" "=")) |
1038 | (stpos (if start start | |
1039 | (forward-word 2) (backward-word 1) (point))) | |
1040 | (edpos (set-marker (make-marker) | |
1041 | (if end end | |
1042 | (max (progn (pascal-declaration-end) | |
1043 | (point)) | |
1044 | pos)))) | |
1045 | ind) | |
1046 | ||
1047 | (goto-char stpos) | |
1048 | ;; Indent lines in record block | |
1049 | (if arg | |
f80235e3 | 1050 | (while (<= (point) edpos) |
da4ce263 RS |
1051 | (beginning-of-line) |
1052 | (delete-horizontal-space) | |
1053 | (if (looking-at "end\\>") | |
1054 | (indent-to arg) | |
1055 | (indent-to (+ arg pascal-indent-level))) | |
1056 | (forward-line 1))) | |
1057 | ||
1058 | ;; Do lineup | |
1059 | (setq ind (pascal-get-lineup-indent stpos edpos lineup)) | |
1060 | (goto-char stpos) | |
f80235e3 | 1061 | (while (and (<= (point) edpos) (not (eobp))) |
da4ce263 RS |
1062 | (if (search-forward lineup (pascal-get-end-of-line) 'move) |
1063 | (forward-char -1)) | |
1064 | (delete-horizontal-space) | |
1065 | (indent-to ind) | |
1066 | (if (not (looking-at lineup)) | |
1067 | (forward-line 1) ; No more indent if there is no : or = | |
1068 | (forward-char 1) | |
1069 | (delete-horizontal-space) | |
1070 | (insert " ") | |
1071 | ;; Indent record block | |
1072 | (if (looking-at "record\\>") | |
1073 | (pascal-indent-declaration (current-column))) | |
1074 | (forward-line 1))))) | |
1075 | ||
1076 | ;; If arg - move point | |
1077 | (if arg (forward-line -1) | |
f80235e3 | 1078 | (goto-char pos)))) |
da4ce263 RS |
1079 | |
1080 | ; "Return the indent level that will line up several lines within the region | |
1081 | ;from b to e nicely. The lineup string is str." | |
1082 | (defun pascal-get-lineup-indent (b e str) | |
1083 | (save-excursion | |
1084 | (let ((ind 0) | |
27b53c17 | 1085 | (reg (concat str "\\|\\(\\<record\\>\\)\\|" pascal-defun-re))) |
da4ce263 RS |
1086 | (goto-char b) |
1087 | ;; Get rightmost position | |
1088 | (while (< (point) e) | |
27b53c17 RS |
1089 | (and (re-search-forward reg (min e (pascal-get-end-of-line 2)) 'move) |
1090 | (cond ((match-beginning 1) | |
1091 | ;; Skip record blocks | |
1092 | (pascal-declaration-end)) | |
1093 | ((match-beginning 2) | |
1094 | ;; We have entered a new procedure. Exit. | |
1095 | (goto-char e)) | |
1096 | (t | |
1097 | (goto-char (match-beginning 0)) | |
1098 | (skip-chars-backward " \t") | |
1099 | (if (> (current-column) ind) | |
1100 | (setq ind (current-column))) | |
1101 | (goto-char (match-end 0)) | |
1102 | (end-of-line) | |
1103 | )))) | |
da4ce263 RS |
1104 | ;; In case no lineup was found |
1105 | (if (> ind 0) | |
1106 | (1+ ind) | |
1107 | ;; No lineup-string found | |
1108 | (goto-char b) | |
1109 | (end-of-line) | |
1110 | (skip-chars-backward " \t") | |
1111 | (1+ (current-column)))))) | |
a1506d29 | 1112 | |
da4ce263 RS |
1113 | \f |
1114 | ||
1115 | ;;; | |
1116 | ;;; Completion | |
9566dc15 | 1117 | |
da4ce263 RS |
1118 | (defun pascal-string-diff (str1 str2) |
1119 | "Return index of first letter where STR1 and STR2 differs." | |
1120 | (catch 'done | |
1121 | (let ((diff 0)) | |
1122 | (while t | |
1123 | (if (or (> (1+ diff) (length str1)) | |
1124 | (> (1+ diff) (length str2))) | |
1125 | (throw 'done diff)) | |
1126 | (or (equal (aref str1 diff) (aref str2 diff)) | |
1127 | (throw 'done diff)) | |
1128 | (setq diff (1+ diff)))))) | |
1129 | ||
1130 | ;; Calculate all possible completions for functions if argument is `function', | |
1131 | ;; completions for procedures if argument is `procedure' or both functions and | |
1132 | ;; procedures otherwise. | |
1133 | ||
601a9508 | 1134 | (defun pascal-func-completion (type pascal-str) |
da4ce263 | 1135 | ;; Build regular expression for function/procedure names |
601a9508 SM |
1136 | (save-excursion |
1137 | (if (string= pascal-str "") | |
1138 | (setq pascal-str "[a-zA-Z_]")) | |
1139 | (let ((pascal-str (concat (cond | |
1140 | ((eq type 'procedure) "\\<\\(procedure\\)\\s +") | |
1141 | ((eq type 'function) "\\<\\(function\\)\\s +") | |
1142 | (t "\\<\\(function\\|procedure\\)\\s +")) | |
1143 | "\\<\\(" pascal-str "[a-zA-Z0-9_.]*\\)\\>")) | |
1144 | (pascal-all ()) | |
1145 | match) | |
3bb8691b | 1146 | |
601a9508 SM |
1147 | (if (not (looking-at "\\<\\(function\\|procedure\\)\\>")) |
1148 | (re-search-backward "\\<\\(function\\|procedure\\)\\>" nil t)) | |
1149 | (forward-char 1) | |
1150 | ||
1151 | ;; Search through all reachable functions | |
1152 | (while (pascal-beg-of-defun) | |
1153 | (if (re-search-forward pascal-str (pascal-get-end-of-line) t) | |
1154 | (progn (setq match (buffer-substring (match-beginning 2) | |
1155 | (match-end 2))) | |
1156 | (push match pascal-all))) | |
1157 | (goto-char (match-beginning 0))) | |
1158 | ||
1159 | pascal-all))) | |
1160 | ||
1161 | (defun pascal-get-completion-decl (pascal-str) | |
da4ce263 | 1162 | ;; Macro for searching through current declaration (var, type or const) |
f80235e3 | 1163 | ;; for matches of `str' and adding the occurrence to `all' |
da4ce263 RS |
1164 | (let ((end (save-excursion (pascal-declaration-end) |
1165 | (point))) | |
601a9508 | 1166 | (pascal-all ()) |
da4ce263 RS |
1167 | match) |
1168 | ;; Traverse lines | |
1169 | (while (< (point) end) | |
1170 | (if (re-search-forward "[:=]" (pascal-get-end-of-line) t) | |
1171 | ;; Traverse current line | |
a1506d29 JB |
1172 | (while (and (re-search-backward |
1173 | (concat "\\((\\|\\<\\(var\\|type\\|const\\)\\>\\)\\|" | |
da4ce263 RS |
1174 | pascal-symbol-re) |
1175 | (pascal-get-beg-of-line) t) | |
1176 | (not (match-end 1))) | |
1177 | (setq match (buffer-substring (match-beginning 0) (match-end 0))) | |
9566dc15 | 1178 | (if (string-match (concat "\\<" pascal-str) match) |
601a9508 | 1179 | (push match pascal-all)))) |
da4ce263 RS |
1180 | (if (re-search-forward "\\<record\\>" (pascal-get-end-of-line) t) |
1181 | (pascal-declaration-end) | |
601a9508 | 1182 | (forward-line 1))) |
da4ce263 | 1183 | |
601a9508 SM |
1184 | pascal-all)) |
1185 | ||
1186 | (defun pascal-type-completion (pascal-str) | |
da4ce263 RS |
1187 | "Calculate all possible completions for types." |
1188 | (let ((start (point)) | |
601a9508 | 1189 | (pascal-all ()) |
da4ce263 RS |
1190 | goon) |
1191 | ;; Search for all reachable type declarations | |
1192 | (while (or (pascal-beg-of-defun) | |
1193 | (setq goon (not goon))) | |
1194 | (save-excursion | |
1195 | (if (and (< start (prog1 (save-excursion (pascal-end-of-defun) | |
1196 | (point)) | |
1197 | (forward-char 1))) | |
1198 | (re-search-forward | |
3a3ee445 | 1199 | "\\<type\\>\\|\\<\\(begin\\|function\\|procedure\\)\\>" |
da4ce263 RS |
1200 | start t) |
1201 | (not (match-end 1))) | |
1202 | ;; Check current type declaration | |
601a9508 SM |
1203 | (setq pascal-all |
1204 | (nconc (pascal-get-completion-decl pascal-str) | |
1205 | pascal-all))))) | |
1206 | ||
1207 | pascal-all)) | |
da4ce263 | 1208 | |
601a9508 | 1209 | (defun pascal-var-completion (prefix) |
da4ce263 | 1210 | "Calculate all possible completions for variables (or constants)." |
601a9508 SM |
1211 | (save-excursion |
1212 | (let ((start (point)) | |
1213 | (pascal-all ()) | |
1214 | goon twice) | |
1215 | ;; Search for all reachable var declarations | |
1216 | (while (or (pascal-beg-of-defun) | |
1217 | (setq goon (not goon))) | |
1218 | (save-excursion | |
1219 | (if (> start (prog1 (save-excursion (pascal-end-of-defun) | |
1220 | (point)))) | |
1221 | () ; Declarations not reachable | |
1222 | (if (search-forward "(" (pascal-get-end-of-line) t) | |
1223 | ;; Check parameterlist | |
1224 | ;; FIXME: pascal-get-completion-decl doesn't understand | |
1225 | ;; the var declarations in parameter lists :-( | |
1226 | (setq pascal-all | |
1227 | (nconc (pascal-get-completion-decl prefix) | |
1228 | pascal-all))) | |
1229 | (setq twice 2) | |
1230 | (while (>= (setq twice (1- twice)) 0) | |
1231 | (cond | |
1232 | ((and (re-search-forward | |
1233 | (concat "\\<\\(var\\|const\\)\\>\\|" | |
1234 | "\\<\\(begin\\|function\\|procedure\\)\\>") | |
1235 | start t) | |
1236 | (not (match-end 2))) | |
1237 | ;; Check var/const declarations | |
1238 | (setq pascal-all | |
1239 | (nconc (pascal-get-completion-decl prefix) | |
1240 | pascal-all))) | |
1241 | ((match-end 2) | |
1242 | (setq twice 0))))))) | |
1243 | pascal-all))) | |
1244 | ||
1245 | ||
1246 | (defun pascal-keyword-completion (keyword-list pascal-str) | |
da4ce263 | 1247 | "Give list of all possible completions of keywords in KEYWORD-LIST." |
601a9508 SM |
1248 | (let ((pascal-all ())) |
1249 | (dolist (s keyword-list) | |
1250 | (if (string-match (concat "\\<" pascal-str) s) | |
1251 | (push s pascal-all))) | |
1252 | pascal-all)) | |
da4ce263 RS |
1253 | |
1254 | ;; Function passed to completing-read, try-completion or | |
1255 | ;; all-completions to get completion on STR. If predicate is non-nil, | |
1256 | ;; it must be a function to be called for every match to check if this | |
1257 | ;; should really be a match. If flag is t, the function returns a list | |
1258 | ;; of all possible completions. If it is nil it returns a string, the | |
1259 | ;; longest possible completion, or t if STR is an exact match. If flag | |
1260 | ;; is 'lambda, the function returns t if STR is an exact match, nil | |
1261 | ;; otherwise. | |
1262 | ||
601a9508 | 1263 | (defvar pascal-completion-cache nil) |
da4ce263 | 1264 | |
601a9508 SM |
1265 | (defun pascal-completion (pascal-str pascal-pred pascal-flag) |
1266 | (let ((all (car pascal-completion-cache))) | |
1267 | ;; Check the cache's freshness. | |
1268 | (unless (and pascal-completion-cache | |
1269 | (string-prefix-p (nth 1 pascal-completion-cache) pascal-str) | |
1270 | (eq (current-buffer) (nth 2 pascal-completion-cache)) | |
1271 | (eq (field-beginning) (nth 3 pascal-completion-cache))) | |
da4ce263 | 1272 | (let ((state (car (pascal-calculate-indent)))) |
601a9508 SM |
1273 | (setq all |
1274 | ;; Determine what should be completed | |
1275 | (cond | |
1276 | ( ;--Within a declaration or parameterlist | |
1277 | (or (eq state 'declaration) (eq state 'paramlist) | |
1278 | (and (eq state 'defun) | |
1279 | (save-excursion | |
1280 | (re-search-backward ")[ \t]*:" | |
1281 | (pascal-get-beg-of-line) t)))) | |
1282 | (if (or (eq state 'paramlist) (eq state 'defun)) | |
1283 | (pascal-beg-of-defun)) | |
1284 | (nconc | |
1285 | (pascal-type-completion pascal-str) | |
1286 | (pascal-keyword-completion pascal-type-keywords pascal-str))) | |
1287 | ( ;--Starting a new statement | |
1288 | (and (not (eq state 'contexp)) | |
1289 | (save-excursion | |
1290 | (skip-chars-backward "a-zA-Z0-9_.") | |
1291 | (backward-sexp 1) | |
1292 | (or (looking-at pascal-nosemi-re) | |
1293 | (progn | |
1294 | (forward-sexp 1) | |
1295 | (looking-at "\\s *\\(;\\|:[^=]\\)"))))) | |
1296 | (nconc | |
1297 | (pascal-var-completion pascal-str) | |
1298 | (pascal-func-completion 'procedure pascal-str) | |
1299 | (pascal-keyword-completion pascal-start-keywords pascal-str))) | |
1300 | (t ;--Anywhere else | |
1301 | (nconc | |
1302 | (pascal-var-completion pascal-str) | |
1303 | (pascal-func-completion 'function pascal-str) | |
1304 | (pascal-keyword-completion pascal-separator-keywords | |
1305 | pascal-str))))) | |
1306 | ||
1307 | (setq pascal-completion-cache | |
1308 | (list all pascal-str (current-buffer) (field-beginning))))) | |
1309 | ||
1310 | ;; Now we have built a list of all matches. Give response to caller | |
1311 | (complete-with-action pascal-flag all pascal-str pascal-pred))) | |
da4ce263 RS |
1312 | |
1313 | (defvar pascal-last-word-numb 0) | |
1314 | (defvar pascal-last-word-shown nil) | |
1315 | (defvar pascal-last-completions nil) | |
1316 | ||
1317 | (defun pascal-complete-word () | |
1318 | "Complete word at current point. | |
1319 | \(See also `pascal-toggle-completions', `pascal-type-keywords', | |
81aca4f4 | 1320 | `pascal-start-keywords' and `pascal-separator-keywords'.)" |
da4ce263 RS |
1321 | (interactive) |
1322 | (let* ((b (save-excursion (skip-chars-backward "a-zA-Z0-9_") (point))) | |
601a9508 | 1323 | (e (save-excursion (skip-chars-forward "a-zA-Z0-9_") (point)))) |
da4ce263 RS |
1324 | |
1325 | ;; Toggle-completions inserts whole labels | |
1326 | (if pascal-toggle-completions | |
601a9508 SM |
1327 | (let* ((pascal-str (buffer-substring b e)) |
1328 | (allcomp (if (and pascal-toggle-completions | |
1329 | (string= pascal-last-word-shown pascal-str)) | |
1330 | pascal-last-completions | |
1331 | (all-completions pascal-str 'pascal-completion)))) | |
da4ce263 RS |
1332 | ;; Update entry number in list |
1333 | (setq pascal-last-completions allcomp | |
a1506d29 | 1334 | pascal-last-word-numb |
da4ce263 RS |
1335 | (if (>= pascal-last-word-numb (1- (length allcomp))) |
1336 | 0 | |
1337 | (1+ pascal-last-word-numb))) | |
1338 | (setq pascal-last-word-shown (elt allcomp pascal-last-word-numb)) | |
1339 | ;; Display next match or same string if no match was found | |
601a9508 SM |
1340 | (if allcomp |
1341 | (progn | |
1342 | (goto-char e) | |
1343 | (insert-before-markers pascal-last-word-shown) | |
1344 | (delete-region b e)) | |
da4ce263 | 1345 | (message "(No match)"))) |
4a6fd75f | 1346 | ;; The other form of completion does not necessarily do that. |
601a9508 | 1347 | (completion-in-region b e 'pascal-completion)))) |
da4ce263 RS |
1348 | |
1349 | (defun pascal-show-completions () | |
1350 | "Show all possible completions at current point." | |
1351 | (interactive) | |
1352 | (let* ((b (save-excursion (skip-chars-backward "a-zA-Z0-9_") (point))) | |
1353 | (e (save-excursion (skip-chars-forward "a-zA-Z0-9_") (point))) | |
9566dc15 | 1354 | (pascal-str (buffer-substring b e)) |
da4ce263 | 1355 | (allcomp (if (and pascal-toggle-completions |
9566dc15 | 1356 | (string= pascal-last-word-shown pascal-str)) |
da4ce263 | 1357 | pascal-last-completions |
9566dc15 | 1358 | (all-completions pascal-str 'pascal-completion)))) |
da4ce263 RS |
1359 | ;; Show possible completions in a temporary buffer. |
1360 | (with-output-to-temp-buffer "*Completions*" | |
f5fab556 | 1361 | (display-completion-list allcomp pascal-str)) |
da4ce263 RS |
1362 | ;; Wait for a keypress. Then delete *Completion* window |
1363 | (momentary-string-display "" (point)) | |
1364 | (delete-window (get-buffer-window (get-buffer "*Completions*"))))) | |
1365 | ||
1366 | ||
1367 | (defun pascal-get-default-symbol () | |
1368 | "Return symbol around current point as a string." | |
1369 | (save-excursion | |
1370 | (buffer-substring (progn | |
1371 | (skip-chars-backward " \t") | |
1372 | (skip-chars-backward "a-zA-Z0-9_") | |
1373 | (point)) | |
1374 | (progn | |
1375 | (skip-chars-forward "a-zA-Z0-9_") | |
1376 | (point))))) | |
1377 | ||
1378 | (defun pascal-build-defun-re (str &optional arg) | |
1379 | "Return function/procedure starting with STR as regular expression. | |
1380 | With optional second arg non-nil, STR is the complete name of the instruction." | |
1381 | (if arg | |
1382 | (concat "^\\(function\\|procedure\\)[ \t]+\\(" str "\\)\\>") | |
1383 | (concat "^\\(function\\|procedure\\)[ \t]+\\(" str "[a-zA-Z0-9_]*\\)\\>"))) | |
1384 | ||
1385 | ;; Function passed to completing-read, try-completion or | |
1386 | ;; all-completions to get completion on any function name. If | |
1387 | ;; predicate is non-nil, it must be a function to be called for every | |
1388 | ;; match to check if this should really be a match. If flag is t, the | |
1389 | ;; function returns a list of all possible completions. If it is nil | |
1390 | ;; it returns a string, the longest possible completion, or t if STR | |
1391 | ;; is an exact match. If flag is 'lambda, the function returns t if | |
1392 | ;; STR is an exact match, nil otherwise. | |
1393 | ||
9566dc15 | 1394 | (defun pascal-comp-defun (pascal-str pascal-pred pascal-flag) |
da4ce263 | 1395 | (save-excursion |
601a9508 SM |
1396 | (let ((pascal-all nil)) |
1397 | ||
1398 | ;; Build regular expression for functions | |
1399 | (let ((pascal-str (pascal-build-defun-re (if (string= pascal-str "") | |
1400 | "[a-zA-Z_]" | |
1401 | pascal-str)))) | |
1402 | (goto-char (point-min)) | |
3bb8691b | 1403 | |
601a9508 SM |
1404 | ;; Build a list of all possible completions |
1405 | (while (re-search-forward pascal-str nil t) | |
1406 | (push (match-string 2) pascal-all))) | |
da4ce263 RS |
1407 | |
1408 | ;; Now we have built a list of all matches. Give response to caller | |
601a9508 | 1409 | (complete-with-action pascal-flag pascal-all pascal-str pascal-pred)))) |
da4ce263 RS |
1410 | |
1411 | (defun pascal-goto-defun () | |
1412 | "Move to specified Pascal function/procedure. | |
1413 | The default is a name found in the buffer around point." | |
1414 | (interactive) | |
1415 | (let* ((default (pascal-get-default-symbol)) | |
da4ce263 RS |
1416 | (default (if (pascal-comp-defun default nil 'lambda) |
1417 | default "")) | |
3bb8691b | 1418 | (label |
601a9508 SM |
1419 | ;; Do completion with default |
1420 | (completing-read (if (not (string= default "")) | |
1421 | (concat "Label (default " default "): ") | |
1422 | "Label: ") | |
1423 | ;; Complete with the defuns found in the | |
1424 | ;; current-buffer. | |
1425 | (lexical-let ((buf (current-buffer))) | |
1426 | (lambda (s p a) | |
1427 | (with-current-buffer buf | |
1428 | (pascal-comp-defun s p a)))) | |
1429 | nil t ""))) | |
da4ce263 RS |
1430 | ;; If there was no response on prompt, use default value |
1431 | (if (string= label "") | |
1432 | (setq label default)) | |
1433 | ;; Goto right place in buffer if label is not an empty string | |
1434 | (or (string= label "") | |
1435 | (progn | |
1436 | (goto-char (point-min)) | |
1437 | (re-search-forward (pascal-build-defun-re label t)) | |
1438 | (beginning-of-line))))) | |
1439 | ||
1440 | \f | |
1441 | ||
1442 | ;;; | |
1443 | ;;; Pascal-outline-mode | |
1444 | ;;; | |
86ac52df SM |
1445 | (defvar pascal-outline-map |
1446 | (let ((map (make-sparse-keymap))) | |
1447 | (if (fboundp 'set-keymap-name) | |
1448 | (set-keymap-name pascal-outline-map 'pascal-outline-map)) | |
1449 | (define-key map "\M-\C-a" 'pascal-outline-prev-defun) | |
1450 | (define-key map "\M-\C-e" 'pascal-outline-next-defun) | |
1451 | (define-key map "\C-c\C-d" 'pascal-outline-goto-defun) | |
1452 | (define-key map "\C-c\C-s" 'pascal-show-all) | |
1453 | (define-key map "\C-c\C-h" 'pascal-hide-other-defuns) | |
1454 | map) | |
1455 | "Keymap used in Pascal Outline mode.") | |
1456 | ||
5443c9b7 | 1457 | (define-obsolete-function-alias 'pascal-outline 'pascal-outline-mode "22.1") |
86ac52df | 1458 | (define-minor-mode pascal-outline-mode |
da4ce263 RS |
1459 | "Outline-line minor mode for Pascal mode. |
1460 | When in Pascal Outline mode, portions | |
1461 | of the text being edited may be made invisible. \\<pascal-outline-map> | |
1462 | ||
1463 | Pascal Outline mode provides some additional commands. | |
1464 | ||
1465 | \\[pascal-outline-prev-defun]\ | |
1466 | \t- Move to previous function/procedure, hiding everything else. | |
1467 | \\[pascal-outline-next-defun]\ | |
1468 | \t- Move to next function/procedure, hiding everything else. | |
1469 | \\[pascal-outline-goto-defun]\ | |
1470 | \t- Goto function/procedure prompted for in minibuffer, | |
1471 | \t hide all other functions. | |
1472 | \\[pascal-show-all]\t- Show the whole buffer. | |
1473 | \\[pascal-hide-other-defuns]\ | |
1474 | \t- Hide everything but the current function (function under the cursor). | |
1475 | \\[pascal-outline]\t- Leave pascal-outline-mode." | |
86ac52df SM |
1476 | :init-value nil :lighter " Outl" :keymap pascal-outline-map |
1477 | (add-to-invisibility-spec '(pascal . t)) | |
1478 | (unless pascal-outline-mode | |
1479 | (pascal-show-all))) | |
da4ce263 | 1480 | |
9566dc15 | 1481 | (defun pascal-outline-change (b e pascal-flag) |
86ac52df SM |
1482 | (save-excursion |
1483 | ;; This used to use selective display so the boundaries used by the | |
1484 | ;; callers didn't have to be precise, since it just looked for \n or \^M | |
1485 | ;; and switched them. | |
1486 | (goto-char b) (setq b (line-end-position)) | |
1487 | (goto-char e) (setq e (line-end-position))) | |
1488 | (when (> e b) | |
1489 | ;; We could try and optimize this in the case where the region is | |
1490 | ;; already hidden. But I'm not sure it's worth the trouble. | |
1491 | (remove-overlays b e 'invisible 'pascal) | |
1492 | (when (eq pascal-flag ?\^M) | |
1493 | (let ((ol (make-overlay b e nil t nil))) | |
1494 | (overlay-put ol 'invisible 'pascal) | |
1495 | (overlay-put ol 'evaporate t))))) | |
da4ce263 RS |
1496 | |
1497 | (defun pascal-show-all () | |
1498 | "Show all of the text in the buffer." | |
1499 | (interactive) | |
1500 | (pascal-outline-change (point-min) (point-max) ?\n)) | |
1501 | ||
1502 | (defun pascal-hide-other-defuns () | |
1503 | "Show only the current defun." | |
1504 | (interactive) | |
1505 | (save-excursion | |
1506 | (let ((beg (progn (if (not (looking-at "\\(function\\|procedure\\)\\>")) | |
1507 | (pascal-beg-of-defun)) | |
1508 | (point))) | |
1509 | (end (progn (pascal-end-of-defun) | |
1510 | (backward-sexp 1) | |
1511 | (search-forward "\n\\|\^M" nil t) | |
1512 | (point))) | |
1513 | (opoint (point-min))) | |
1514 | (goto-char (point-min)) | |
1515 | ||
1516 | ;; Hide all functions before current function | |
1517 | (while (re-search-forward "^\\(function\\|procedure\\)\\>" beg 'move) | |
1518 | (pascal-outline-change opoint (1- (match-beginning 0)) ?\^M) | |
1519 | (setq opoint (point)) | |
1520 | ;; Functions may be nested | |
1521 | (if (> (progn (pascal-end-of-defun) (point)) beg) | |
1522 | (goto-char opoint))) | |
1523 | (if (> beg opoint) | |
1524 | (pascal-outline-change opoint (1- beg) ?\^M)) | |
1525 | ||
1526 | ;; Show current function | |
1527 | (pascal-outline-change beg end ?\n) | |
1528 | ;; Hide nested functions | |
1529 | (forward-char 1) | |
1530 | (while (re-search-forward "^\\(function\\|procedure\\)\\>" end 'move) | |
1531 | (setq opoint (point)) | |
1532 | (pascal-end-of-defun) | |
1533 | (pascal-outline-change opoint (point) ?\^M)) | |
1534 | ||
1535 | (goto-char end) | |
1536 | (setq opoint end) | |
1537 | ||
1538 | ;; Hide all function after current function | |
1539 | (while (re-search-forward "^\\(function\\|procedure\\)\\>" nil 'move) | |
1540 | (pascal-outline-change opoint (1- (match-beginning 0)) ?\^M) | |
1541 | (setq opoint (point)) | |
1542 | (pascal-end-of-defun)) | |
1543 | (pascal-outline-change opoint (point-max) ?\^M) | |
1544 | ||
1545 | ;; Hide main program | |
1546 | (if (< (progn (forward-line -1) (point)) end) | |
1a2b6c52 | 1547 | (progn |
da4ce263 RS |
1548 | (goto-char beg) |
1549 | (pascal-end-of-defun) | |
1550 | (backward-sexp 1) | |
1551 | (pascal-outline-change (point) (point-max) ?\^M)))))) | |
1a2b6c52 | 1552 | |
da4ce263 RS |
1553 | (defun pascal-outline-next-defun () |
1554 | "Move to next function/procedure, hiding all others." | |
1555 | (interactive) | |
1556 | (pascal-end-of-defun) | |
1557 | (pascal-hide-other-defuns)) | |
1558 | ||
1559 | (defun pascal-outline-prev-defun () | |
1560 | "Move to previous function/procedure, hiding all others." | |
1561 | (interactive) | |
1562 | (pascal-beg-of-defun) | |
1563 | (pascal-hide-other-defuns)) | |
1564 | ||
1565 | (defun pascal-outline-goto-defun () | |
1566 | "Move to specified function/procedure, hiding all others." | |
1567 | (interactive) | |
1568 | (pascal-goto-defun) | |
1569 | (pascal-hide-other-defuns)) | |
1a2b6c52 | 1570 | |
896546cd RS |
1571 | (provide 'pascal) |
1572 | ||
86ac52df | 1573 | ;; arch-tag: 04535136-fd93-40b4-a505-c9bebdc051f5 |
da4ce263 | 1574 | ;;; pascal.el ends here |