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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 |
1ba983e8 GM |
4 | ;; 2003, 2004, 2005, 2006, 2007, 2008, 2009 |
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 | |
f0cca206 | 63 | (defgroup pascal nil |
abefd511 | 64 | "Major mode for editing Pascal source in Emacs." |
8ec3bce0 | 65 | :link '(custom-group-link :tag "Font Lock Faces group" font-lock-faces) |
f0cca206 RS |
66 | :group 'languages) |
67 | ||
1a2b6c52 RS |
68 | (defvar pascal-mode-abbrev-table nil |
69 | "Abbrev table in use in Pascal-mode buffers.") | |
70 | (define-abbrev-table 'pascal-mode-abbrev-table ()) | |
71 | ||
86ac52df SM |
72 | (defvar pascal-mode-map |
73 | (let ((map (make-sparse-keymap))) | |
74 | (define-key map ";" 'electric-pascal-semi-or-dot) | |
75 | (define-key map "." 'electric-pascal-semi-or-dot) | |
76 | (define-key map ":" 'electric-pascal-colon) | |
77 | (define-key map "=" 'electric-pascal-equal) | |
78 | (define-key map "#" 'electric-pascal-hash) | |
79 | (define-key map "\r" 'electric-pascal-terminate-line) | |
80 | (define-key map "\t" 'electric-pascal-tab) | |
81 | (define-key map "\M-\t" 'pascal-complete-word) | |
82 | (define-key map "\M-?" 'pascal-show-completions) | |
83 | (define-key map "\177" 'backward-delete-char-untabify) | |
84 | (define-key map "\M-\C-h" 'pascal-mark-defun) | |
85 | (define-key map "\C-c\C-b" 'pascal-insert-block) | |
86 | (define-key map "\M-*" 'pascal-star-comment) | |
87 | (define-key map "\C-c\C-c" 'pascal-comment-area) | |
88 | (define-key map "\C-c\C-u" 'pascal-uncomment-area) | |
89 | (define-key map "\M-\C-a" 'pascal-beg-of-defun) | |
90 | (define-key map "\M-\C-e" 'pascal-end-of-defun) | |
91 | (define-key map "\C-c\C-d" 'pascal-goto-defun) | |
92 | (define-key map "\C-c\C-o" 'pascal-outline-mode) | |
93 | ;; A command to change the whole buffer won't be used terribly | |
94 | ;; often, so no need for a key binding. | |
95 | ;; (define-key map "\C-cd" 'pascal-downcase-keywords) | |
96 | ;; (define-key map "\C-cu" 'pascal-upcase-keywords) | |
97 | ;; (define-key map "\C-cc" 'pascal-capitalize-keywords) | |
98 | map) | |
1a2b6c52 | 99 | "Keymap used in Pascal mode.") |
69b354eb RS |
100 | |
101 | (defvar pascal-imenu-generic-expression | |
099175be | 102 | '((nil "^[ \t]*\\(function\\|procedure\\)[ \t\n]+\\([a-zA-Z0-9_.:]+\\)" 2)) |
69b354eb | 103 | "Imenu expression for Pascal-mode. See `imenu-generic-expression'.") |
e936de0b | 104 | |
da4ce263 | 105 | (defvar pascal-keywords |
a1506d29 JB |
106 | '("and" "array" "begin" "case" "const" "div" "do" "downto" "else" "end" |
107 | "file" "for" "function" "goto" "if" "in" "label" "mod" "nil" "not" "of" | |
108 | "or" "packed" "procedure" "program" "record" "repeat" "set" "then" "to" | |
da4ce263 RS |
109 | "type" "until" "var" "while" "with" |
110 | ;; The following are not standard in pascal, but widely used. | |
111 | "get" "put" "input" "output" "read" "readln" "reset" "rewrite" "write" | |
112 | "writeln")) | |
113 | ||
114 | ;;; | |
115 | ;;; Regular expressions used to calculate indent, etc. | |
116 | ;;; | |
117 | (defconst pascal-symbol-re "\\<[a-zA-Z_][a-zA-Z_0-9.]*\\>") | |
118 | (defconst pascal-beg-block-re "\\<\\(begin\\|case\\|record\\|repeat\\)\\>") | |
119 | (defconst pascal-end-block-re "\\<\\(end\\|until\\)\\>") | |
120 | (defconst pascal-declaration-re "\\<\\(const\\|label\\|type\\|var\\)\\>") | |
27b53c17 | 121 | (defconst pascal-progbeg-re "\\<\\program\\>") |
da4ce263 | 122 | (defconst pascal-defun-re "\\<\\(function\\|procedure\\|program\\)\\>") |
7e0dd87e | 123 | (defconst pascal-sub-block-re "\\<\\(if\\|else\\|for\\|while\\|with\\)\\>") |
f6807db3 | 124 | (defconst pascal-noindent-re "\\<\\(begin\\|end\\|until\\|else\\)\\>") |
da4ce263 RS |
125 | (defconst pascal-nosemi-re "\\<\\(begin\\|repeat\\|then\\|do\\|else\\)\\>") |
126 | (defconst pascal-autoindent-lines-re | |
127 | "\\<\\(label\\|var\\|type\\|const\\|until\\|end\\|begin\\|repeat\\|else\\)\\>") | |
128 | ||
129 | ;;; Strings used to mark beginning and end of excluded text | |
130 | (defconst pascal-exclude-str-start "{-----\\/----- EXCLUDED -----\\/-----") | |
131 | (defconst pascal-exclude-str-end " -----/\\----- EXCLUDED -----/\\-----}") | |
1a2b6c52 | 132 | |
86ac52df SM |
133 | (defvar pascal-mode-syntax-table |
134 | (let ((st (make-syntax-table))) | |
135 | (modify-syntax-entry ?\\ "." st) | |
136 | (modify-syntax-entry ?\( "()1" st) | |
137 | (modify-syntax-entry ?\) ")(4" st) | |
138 | ;; This used to use comment-syntax `b'. But the only document I could | |
139 | ;; find about the syntax of Pascal's comments said that (* ... } is | |
140 | ;; a valid comment, just as { ... *) or (* ... *) or { ... }. | |
141 | (modify-syntax-entry ?* ". 23" st) | |
142 | (modify-syntax-entry ?{ "<" st) | |
143 | (modify-syntax-entry ?} ">" 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 | st) | |
1a2b6c52 RS |
155 | "Syntax table in use in Pascal-mode buffers.") |
156 | ||
86ac52df | 157 | |
da4ce263 | 158 | |
f80235e3 | 159 | (defconst pascal-font-lock-keywords (purecopy |
210cf16d | 160 | (list |
f80235e3 RS |
161 | '("^[ \t]*\\(function\\|pro\\(cedure\\|gram\\)\\)\\>[ \t]*\\([a-z]\\)" |
162 | 1 font-lock-keyword-face) | |
163 | '("^[ \t]*\\(function\\|pro\\(cedure\\|gram\\)\\)\\>[ \t]*\\([a-z][a-z0-9_]*\\)" | |
164 | 3 font-lock-function-name-face t) | |
210cf16d RS |
165 | ; ("type" "const" "real" "integer" "char" "boolean" "var" |
166 | ; "record" "array" "file") | |
167 | (cons (concat "\\<\\(array\\|boolean\\|c\\(har\\|onst\\)\\|file\\|" | |
168 | "integer\\|re\\(al\\|cord\\)\\|type\\|var\\)\\>") | |
169 | 'font-lock-type-face) | |
883212ce | 170 | '("\\<\\(label\\|external\\|forward\\)\\>" . font-lock-constant-face) |
f80235e3 | 171 | '("\\<\\([0-9]+\\)[ \t]*:" 1 font-lock-function-name-face) |
210cf16d RS |
172 | ; ("of" "to" "for" "if" "then" "else" "case" "while" |
173 | ; "do" "until" "and" "or" "not" "in" "with" "repeat" "begin" "end") | |
174 | (concat "\\<\\(" | |
175 | "and\\|begin\\|case\\|do\\|e\\(lse\\|nd\\)\\|for\\|i[fn]\\|" | |
176 | "not\\|o[fr]\\|repeat\\|t\\(hen\\|o\\)\\|until\\|w\\(hile\\|ith\\)" | |
177 | "\\)\\>") | |
178 | '("\\<\\(goto\\)\\>[ \t]*\\([0-9]+\\)?" | |
f80235e3 RS |
179 | 1 font-lock-keyword-face) |
180 | '("\\<\\(goto\\)\\>[ \t]*\\([0-9]+\\)?" | |
181 | 2 font-lock-keyword-face t))) | |
210cf16d | 182 | "Additional expressions to highlight in Pascal mode.") |
f80235e3 | 183 | (put 'pascal-mode 'font-lock-defaults '(pascal-font-lock-keywords nil t)) |
210cf16d | 184 | |
f0cca206 RS |
185 | (defcustom pascal-indent-level 3 |
186 | "*Indentation of Pascal statements with respect to containing block." | |
187 | :type 'integer | |
188 | :group 'pascal) | |
189 | ||
190 | (defcustom pascal-case-indent 2 | |
191 | "*Indentation for case statements." | |
192 | :type 'integer | |
193 | :group 'pascal) | |
194 | ||
195 | (defcustom pascal-auto-newline nil | |
196 | "*Non-nil means automatically insert newlines in certain cases. | |
197 | These include after semicolons and after the punctuation mark after an `end'." | |
198 | :type 'boolean | |
199 | :group 'pascal) | |
200 | ||
27b53c17 RS |
201 | (defcustom pascal-indent-nested-functions t |
202 | "*Non-nil means nested functions are indented." | |
203 | :type 'boolean | |
204 | :group 'pascal) | |
205 | ||
f0cca206 RS |
206 | (defcustom pascal-tab-always-indent t |
207 | "*Non-nil means TAB in Pascal mode should always reindent the current line. | |
208 | If this is nil, TAB inserts a tab if it is at the end of the line | |
209 | and follows non-whitespace text." | |
210 | :type 'boolean | |
211 | :group 'pascal) | |
212 | ||
213 | (defcustom pascal-auto-endcomments t | |
214 | "*Non-nil means automatically insert comments after certain `end's. | |
215 | Specifically, this is done after the ends of cases statements and functions. | |
216 | The name of the function or case is included between the braces." | |
217 | :type 'boolean | |
218 | :group 'pascal) | |
219 | ||
220 | (defcustom pascal-auto-lineup '(all) | |
3a3ee445 RS |
221 | "*List of contexts where auto lineup of :'s or ='s should be done. |
222 | Elements can be of type: 'paramlist', 'declaration' or 'case', which will | |
223 | do auto lineup in parameterlist, declarations or case-statements | |
224 | respectively. The word 'all' will do all lineups. '(case paramlist) for | |
225 | instance will do lineup in case-statements and parameterlist, while '(all) | |
f0cca206 | 226 | will do all lineups." |
27b53c17 RS |
227 | :type '(set :extra-offset 8 |
228 | (const :tag "Everything" all) | |
229 | (const :tag "Parameter lists" paramlist) | |
230 | (const :tag "Decalrations" declaration) | |
231 | (const :tag "Case statements" case)) | |
f0cca206 RS |
232 | :group 'pascal) |
233 | ||
234 | (defcustom pascal-toggle-completions nil | |
105ad0da RS |
235 | "*Non-nil means \\<pascal-mode-map>\\[pascal-complete-word] should try all possible completions one by one. |
236 | Repeated use of \\[pascal-complete-word] will show you all of them. | |
237 | Normally, when there is more than one possible completion, | |
f0cca206 RS |
238 | it displays a list of all possible completions." |
239 | :type 'boolean | |
240 | :group 'pascal) | |
3a3ee445 | 241 | |
f0cca206 | 242 | (defcustom pascal-type-keywords |
da4ce263 RS |
243 | '("array" "file" "packed" "char" "integer" "real" "string" "record") |
244 | "*Keywords for types used when completing a word in a declaration or parmlist. | |
f0cca206 RS |
245 | These include integer, real, char, etc. |
246 | The types defined within the Pascal program | |
247 | are handled in another way, and should not be added to this list." | |
248 | :type '(repeat (string :tag "Keyword")) | |
249 | :group 'pascal) | |
3a3ee445 | 250 | |
f0cca206 | 251 | (defcustom pascal-start-keywords |
da4ce263 RS |
252 | '("begin" "end" "function" "procedure" "repeat" "until" "while" |
253 | "read" "readln" "reset" "rewrite" "write" "writeln") | |
254 | "*Keywords to complete when standing at the first word of a statement. | |
f0cca206 | 255 | These are keywords such as begin, repeat, until, readln. |
da4ce263 | 256 | The procedures and variables defined within the Pascal program |
3090ac12 | 257 | are handled in another way, and should not be added to this list." |
f0cca206 RS |
258 | :type '(repeat (string :tag "Keyword")) |
259 | :group 'pascal) | |
3a3ee445 | 260 | |
f0cca206 | 261 | (defcustom pascal-separator-keywords |
da4ce263 RS |
262 | '("downto" "else" "mod" "div" "then") |
263 | "*Keywords to complete when NOT standing at the first word of a statement. | |
f0cca206 RS |
264 | These are keywords such as downto, else, mod, then. |
265 | Variables and function names defined within the Pascal program | |
266 | are handled in another way, and should not be added to this list." | |
267 | :type '(repeat (string :tag "Keyword")) | |
268 | :group 'pascal) | |
269 | ||
da4ce263 RS |
270 | |
271 | ;;; | |
272 | ;;; Macros | |
273 | ;;; | |
274 | ||
275 | (defsubst pascal-get-beg-of-line (&optional arg) | |
276 | (save-excursion | |
277 | (beginning-of-line arg) | |
278 | (point))) | |
279 | ||
280 | (defsubst pascal-get-end-of-line (&optional arg) | |
281 | (save-excursion | |
282 | (end-of-line arg) | |
283 | (point))) | |
284 | ||
285 | (defun pascal-declaration-end () | |
286 | (let ((nest 1)) | |
287 | (while (and (> nest 0) | |
a1506d29 JB |
288 | (re-search-forward |
289 | "[:=]\\|\\(\\<record\\>\\)\\|\\(\\<end\\>\\)" | |
da4ce263 RS |
290 | (save-excursion (end-of-line 2) (point)) t)) |
291 | (cond ((match-beginning 1) (setq nest (1+ nest))) | |
2e952aac RS |
292 | ((match-beginning 2) (setq nest (1- nest))) |
293 | ((looking-at "[^(\n]+)") (setq nest 0)))))) | |
da4ce263 | 294 | |
3a3ee445 | 295 | |
da4ce263 RS |
296 | (defun pascal-declaration-beg () |
297 | (let ((nest 1)) | |
298 | (while (and (> nest 0) | |
3a3ee445 | 299 | (re-search-backward "[:=]\\|\\<\\(type\\|var\\|label\\|const\\)\\>\\|\\(\\<record\\>\\)\\|\\(\\<end\\>\\)" (pascal-get-beg-of-line 0) t)) |
da4ce263 RS |
300 | (cond ((match-beginning 1) (setq nest 0)) |
301 | ((match-beginning 2) (setq nest (1- nest))) | |
302 | ((match-beginning 3) (setq nest (1+ nest))))) | |
303 | (= nest 0))) | |
3a3ee445 | 304 | |
a1506d29 | 305 | |
da4ce263 RS |
306 | (defsubst pascal-within-string () |
307 | (save-excursion | |
308 | (nth 3 (parse-partial-sexp (pascal-get-beg-of-line) (point))))) | |
309 | ||
1a2b6c52 RS |
310 | |
311 | ;;;###autoload | |
312 | (defun pascal-mode () | |
da4ce263 RS |
313 | "Major mode for editing Pascal code. \\<pascal-mode-map> |
314 | TAB indents for Pascal code. Delete converts tabs to spaces as it moves back. | |
315 | ||
316 | \\[pascal-complete-word] completes the word around current point with respect \ | |
317 | to position in code | |
318 | \\[pascal-show-completions] shows all possible completions at this point. | |
319 | ||
320 | Other useful functions are: | |
321 | ||
322 | \\[pascal-mark-defun]\t- Mark function. | |
323 | \\[pascal-insert-block]\t- insert begin ... end; | |
324 | \\[pascal-star-comment]\t- insert (* ... *) | |
325 | \\[pascal-comment-area]\t- Put marked area in a comment, fixing nested comments. | |
326 | \\[pascal-uncomment-area]\t- Uncomment an area commented with \ | |
327 | \\[pascal-comment-area]. | |
328 | \\[pascal-beg-of-defun]\t- Move to beginning of current function. | |
329 | \\[pascal-end-of-defun]\t- Move to end of current function. | |
330 | \\[pascal-goto-defun]\t- Goto function prompted for in the minibuffer. | |
86ac52df | 331 | \\[pascal-outline-mode]\t- Enter `pascal-outline-mode'. |
da4ce263 RS |
332 | |
333 | Variables controlling indentation/edit style: | |
334 | ||
27b53c17 | 335 | pascal-indent-level (default 3) |
da4ce263 | 336 | Indentation of Pascal statements with respect to containing block. |
27b53c17 | 337 | pascal-case-indent (default 2) |
da4ce263 | 338 | Indentation for case statements. |
27b53c17 | 339 | pascal-auto-newline (default nil) |
4a6fd75f KH |
340 | Non-nil means automatically newline after semicolons and the punctuation |
341 | mark after an end. | |
27b53c17 RS |
342 | pascal-indent-nested-functions (default t) |
343 | Non-nil means nested functions are indented. | |
3a3ee445 | 344 | pascal-tab-always-indent (default t) |
1a2b6c52 RS |
345 | Non-nil means TAB in Pascal mode should always reindent the current line, |
346 | regardless of where in the line point is when the TAB command is used. | |
27b53c17 | 347 | pascal-auto-endcomments (default t) |
da4ce263 RS |
348 | Non-nil means a comment { ... } is set after the ends which ends cases and |
349 | functions. The name of the function or case will be set between the braces. | |
27b53c17 | 350 | pascal-auto-lineup (default t) |
e936de0b | 351 | List of contexts where auto lineup of :'s or ='s should be done. |
da4ce263 RS |
352 | |
353 | See also the user variables pascal-type-keywords, pascal-start-keywords and | |
81aca4f4 | 354 | pascal-separator-keywords. |
1a2b6c52 RS |
355 | |
356 | Turning on Pascal mode calls the value of the variable pascal-mode-hook with | |
357 | no args, if that value is non-nil." | |
358 | (interactive) | |
359 | (kill-all-local-variables) | |
360 | (use-local-map pascal-mode-map) | |
361 | (setq major-mode 'pascal-mode) | |
362 | (setq mode-name "Pascal") | |
363 | (setq local-abbrev-table pascal-mode-abbrev-table) | |
364 | (set-syntax-table pascal-mode-syntax-table) | |
365 | (make-local-variable 'indent-line-function) | |
366 | (setq indent-line-function 'pascal-indent-line) | |
e7e09325 | 367 | (make-local-variable 'comment-indent-function) |
da4ce263 | 368 | (setq comment-indent-function 'pascal-indent-comment) |
1a2b6c52 | 369 | (make-local-variable 'parse-sexp-ignore-comments) |
9f51be89 | 370 | (setq parse-sexp-ignore-comments nil) |
ef8c3cf9 KH |
371 | (make-local-variable 'blink-matching-paren-dont-ignore-comments) |
372 | (setq blink-matching-paren-dont-ignore-comments t) | |
1a2b6c52 RS |
373 | (make-local-variable 'case-fold-search) |
374 | (setq case-fold-search t) | |
105ad0da RS |
375 | (make-local-variable 'comment-start) |
376 | (setq comment-start "{") | |
210cf16d RS |
377 | (make-local-variable 'comment-start-skip) |
378 | (setq comment-start-skip "(\\*+ *\\|{ *") | |
379 | (make-local-variable 'comment-end) | |
380 | (setq comment-end "}") | |
69b354eb | 381 | ;; Font lock support |
7fa28db0 SM |
382 | (make-local-variable 'font-lock-defaults) |
383 | (setq font-lock-defaults '(pascal-font-lock-keywords nil t)) | |
69b354eb RS |
384 | ;; Imenu support |
385 | (make-local-variable 'imenu-generic-expression) | |
386 | (setq imenu-generic-expression pascal-imenu-generic-expression) | |
c0b08eb0 | 387 | (setq imenu-case-fold-search t) |
9a969196 | 388 | (run-mode-hooks 'pascal-mode-hook)) |
1a2b6c52 | 389 | |
da4ce263 RS |
390 | \f |
391 | ||
1a2b6c52 RS |
392 | ;;; |
393 | ;;; Electric functions | |
394 | ;;; | |
1a2b6c52 RS |
395 | (defun electric-pascal-terminate-line () |
396 | "Terminate line and indent next line." | |
397 | (interactive) | |
da4ce263 | 398 | ;; First, check if current line should be indented |
1a2b6c52 RS |
399 | (save-excursion |
400 | (beginning-of-line) | |
401 | (skip-chars-forward " \t") | |
da4ce263 | 402 | (if (looking-at pascal-autoindent-lines-re) |
1a2b6c52 | 403 | (pascal-indent-line))) |
da4ce263 | 404 | (delete-horizontal-space) ; Removes trailing whitespaces |
1a2b6c52 | 405 | (newline) |
da4ce263 | 406 | ;; Indent next line |
1a2b6c52 RS |
407 | (pascal-indent-line) |
408 | ;; Maybe we should set some endcomments | |
409 | (if pascal-auto-endcomments | |
410 | (pascal-set-auto-comments)) | |
411 | ;; Check if we shall indent inside comment | |
412 | (let ((setstar nil)) | |
413 | (save-excursion | |
414 | (forward-line -1) | |
415 | (skip-chars-forward " \t") | |
da4ce263 | 416 | (cond ((looking-at "\\*[ \t]+)") |
1a2b6c52 RS |
417 | ;; Delete region between `*' and `)' if there is only whitespaces. |
418 | (forward-char 1) | |
da4ce263 | 419 | (delete-horizontal-space)) |
1a2b6c52 RS |
420 | ((and (looking-at "(\\*\\|\\*[^)]") |
421 | (not (save-excursion | |
422 | (search-forward "*)" (pascal-get-end-of-line) t)))) | |
423 | (setq setstar t)))) | |
424 | ;; If last line was a star comment line then this one shall be too. | |
a1506d29 | 425 | (if (null setstar) |
da4ce263 RS |
426 | (pascal-indent-line) |
427 | (insert "* ")))) | |
1a2b6c52 | 428 | |
1a2b6c52 | 429 | |
da4ce263 RS |
430 | (defun electric-pascal-semi-or-dot () |
431 | "Insert `;' or `.' character and reindent the line." | |
1a2b6c52 | 432 | (interactive) |
1ba983e8 | 433 | (insert last-command-event) |
1a2b6c52 RS |
434 | (save-excursion |
435 | (beginning-of-line) | |
436 | (pascal-indent-line)) | |
437 | (if pascal-auto-newline | |
438 | (electric-pascal-terminate-line))) | |
439 | ||
440 | (defun electric-pascal-colon () | |
da4ce263 | 441 | "Insert `:' and do all indentions except line indent on this line." |
1a2b6c52 | 442 | (interactive) |
1ba983e8 | 443 | (insert last-command-event) |
da4ce263 RS |
444 | ;; Do nothing if within string. |
445 | (if (pascal-within-string) | |
446 | () | |
447 | (save-excursion | |
448 | (beginning-of-line) | |
449 | (pascal-indent-line)) | |
450 | (let ((pascal-tab-always-indent nil)) | |
451 | (pascal-indent-command)))) | |
452 | ||
1a2b6c52 | 453 | (defun electric-pascal-equal () |
da4ce263 | 454 | "Insert `=', and do indention if within type declaration." |
1a2b6c52 | 455 | (interactive) |
1ba983e8 | 456 | (insert last-command-event) |
da4ce263 | 457 | (if (eq (car (pascal-calculate-indent)) 'declaration) |
1a2b6c52 RS |
458 | (let ((pascal-tab-always-indent nil)) |
459 | (pascal-indent-command)))) | |
460 | ||
9f51be89 | 461 | (defun electric-pascal-hash () |
4a6fd75f | 462 | "Insert `#', and indent to column 0 if this is a CPP directive." |
9f51be89 | 463 | (interactive) |
1ba983e8 | 464 | (insert last-command-event) |
9f51be89 RS |
465 | (if (save-excursion (beginning-of-line) (looking-at "^[ \t]*#")) |
466 | (save-excursion (beginning-of-line) | |
467 | (delete-horizontal-space)))) | |
468 | ||
1a2b6c52 | 469 | (defun electric-pascal-tab () |
da4ce263 | 470 | "Function called when TAB is pressed in Pascal mode." |
1a2b6c52 | 471 | (interactive) |
9f51be89 RS |
472 | ;; Do nothing if within a string or in a CPP directive. |
473 | (if (or (pascal-within-string) | |
474 | (and (not (bolp)) | |
475 | (save-excursion (beginning-of-line) (eq (following-char) ?#)))) | |
da4ce263 RS |
476 | (insert "\t") |
477 | ;; If pascal-tab-always-indent, indent the beginning of the line. | |
478 | (if pascal-tab-always-indent | |
479 | (save-excursion | |
480 | (beginning-of-line) | |
481 | (pascal-indent-line)) | |
2e952aac RS |
482 | (if (save-excursion |
483 | (skip-chars-backward " \t") | |
484 | (bolp)) | |
485 | (pascal-indent-line) | |
486 | (insert "\t"))) | |
da4ce263 RS |
487 | (pascal-indent-command))) |
488 | ||
489 | \f | |
1a2b6c52 RS |
490 | |
491 | ;;; | |
492 | ;;; Interactive functions | |
493 | ;;; | |
494 | (defun pascal-insert-block () | |
da4ce263 | 495 | "Insert Pascal begin ... end; block in the code with right indentation." |
1a2b6c52 | 496 | (interactive) |
1a2b6c52 RS |
497 | (insert "begin") |
498 | (electric-pascal-terminate-line) | |
499 | (save-excursion | |
6acae80a | 500 | (newline) |
1a2b6c52 RS |
501 | (insert "end;") |
502 | (beginning-of-line) | |
503 | (pascal-indent-line))) | |
504 | ||
505 | (defun pascal-star-comment () | |
da4ce263 | 506 | "Insert Pascal star comment at point." |
1a2b6c52 RS |
507 | (interactive) |
508 | (pascal-indent-line) | |
509 | (insert "(*") | |
510 | (electric-pascal-terminate-line) | |
511 | (save-excursion | |
512 | (electric-pascal-terminate-line) | |
da4ce263 RS |
513 | (delete-horizontal-space) |
514 | (insert ")")) | |
515 | (insert " ")) | |
1a2b6c52 | 516 | |
da4ce263 | 517 | (defun pascal-mark-defun () |
1a2b6c52 | 518 | "Mark the current pascal function (or procedure). |
da4ce263 | 519 | This puts the mark at the end, and point at the beginning." |
1a2b6c52 RS |
520 | (interactive) |
521 | (push-mark (point)) | |
da4ce263 | 522 | (pascal-end-of-defun) |
1a2b6c52 | 523 | (push-mark (point)) |
da4ce263 | 524 | (pascal-beg-of-defun) |
a445370f DN |
525 | (when (featurep 'xemacs) |
526 | (zmacs-activate-region))) | |
1a2b6c52 RS |
527 | |
528 | (defun pascal-comment-area (start end) | |
da4ce263 RS |
529 | "Put the region into a Pascal comment. |
530 | The comments that are in this area are \"deformed\": | |
531 | `*)' becomes `!(*' and `}' becomes `!{'. | |
532 | These deformed comments are returned to normal if you use | |
533 | \\[pascal-uncomment-area] to undo the commenting. | |
534 | ||
535 | The commented area starts with `pascal-exclude-str-start', and ends with | |
536 | `pascal-include-str-end'. But if you change these variables, | |
537 | \\[pascal-uncomment-area] won't recognize the comments." | |
1a2b6c52 RS |
538 | (interactive "r") |
539 | (save-excursion | |
540 | ;; Insert start and endcomments | |
541 | (goto-char end) | |
542 | (if (and (save-excursion (skip-chars-forward " \t") (eolp)) | |
543 | (not (save-excursion (skip-chars-backward " \t") (bolp)))) | |
544 | (forward-line 1) | |
545 | (beginning-of-line)) | |
da4ce263 | 546 | (insert pascal-exclude-str-end) |
1a2b6c52 RS |
547 | (setq end (point)) |
548 | (newline) | |
549 | (goto-char start) | |
550 | (beginning-of-line) | |
da4ce263 | 551 | (insert pascal-exclude-str-start) |
1a2b6c52 RS |
552 | (newline) |
553 | ;; Replace end-comments within commented area | |
554 | (goto-char end) | |
555 | (save-excursion | |
556 | (while (re-search-backward "\\*)" start t) | |
557 | (replace-match "!(*" t t))) | |
558 | (save-excursion | |
559 | (while (re-search-backward "}" start t) | |
560 | (replace-match "!{" t t))))) | |
561 | ||
562 | (defun pascal-uncomment-area () | |
da4ce263 RS |
563 | "Uncomment a commented area; change deformed comments back to normal. |
564 | This command does nothing if the pointer is not in a commented | |
1a2b6c52 RS |
565 | area. See also `pascal-comment-area'." |
566 | (interactive) | |
567 | (save-excursion | |
568 | (let ((start (point)) | |
569 | (end (point))) | |
570 | ;; Find the boundaries of the comment | |
571 | (save-excursion | |
da4ce263 | 572 | (setq start (progn (search-backward pascal-exclude-str-start nil t) |
1a2b6c52 | 573 | (point))) |
da4ce263 | 574 | (setq end (progn (search-forward pascal-exclude-str-end nil t) |
1a2b6c52 RS |
575 | (point)))) |
576 | ;; Check if we're really inside a comment | |
577 | (if (or (equal start (point)) (<= end (point))) | |
578 | (message "Not standing within commented area.") | |
579 | (progn | |
580 | ;; Remove endcomment | |
581 | (goto-char end) | |
582 | (beginning-of-line) | |
583 | (let ((pos (point))) | |
584 | (end-of-line) | |
585 | (delete-region pos (1+ (point)))) | |
586 | ;; Change comments back to normal | |
587 | (save-excursion | |
588 | (while (re-search-backward "!{" start t) | |
589 | (replace-match "}" t t))) | |
590 | (save-excursion | |
591 | (while (re-search-backward "!(\\*" start t) | |
592 | (replace-match "*)" t t))) | |
593 | ;; Remove startcomment | |
594 | (goto-char start) | |
595 | (beginning-of-line) | |
596 | (let ((pos (point))) | |
597 | (end-of-line) | |
598 | (delete-region pos (1+ (point))))))))) | |
599 | ||
da4ce263 RS |
600 | (defun pascal-beg-of-defun () |
601 | "Move backward to the beginning of the current function or procedure." | |
1a2b6c52 | 602 | (interactive) |
da4ce263 RS |
603 | (catch 'found |
604 | (if (not (looking-at (concat "\\s \\|\\s)\\|" pascal-defun-re))) | |
605 | (forward-sexp 1)) | |
606 | (let ((nest 0) (max -1) (func 0) | |
a1506d29 | 607 | (reg (concat pascal-beg-block-re "\\|" |
da4ce263 RS |
608 | pascal-end-block-re "\\|" |
609 | pascal-defun-re))) | |
610 | (while (re-search-backward reg nil 'move) | |
611 | (cond ((let ((state (save-excursion | |
612 | (parse-partial-sexp (point-min) (point))))) | |
613 | (or (nth 3 state) (nth 4 state))) ; Inside string or comment | |
614 | ()) | |
615 | ((match-end 1) ; begin|case|record|repeat | |
616 | (if (and (looking-at "\\<record\\>") (>= max 0)) | |
617 | (setq func (1- func))) | |
618 | (setq nest (1+ nest) | |
619 | max (max nest max))) | |
620 | ((match-end 2) ; end|until | |
621 | (if (and (= nest max) (>= max 0)) | |
622 | (setq func (1+ func))) | |
623 | (setq nest (1- nest))) | |
624 | ((match-end 3) ; function|procedure | |
27b53c17 | 625 | (if (= 0 func) |
da4ce263 RS |
626 | (throw 'found t) |
627 | (setq func (1- func))))))) | |
628 | nil)) | |
629 | ||
630 | (defun pascal-end-of-defun () | |
631 | "Move forward to the end of the current function or procedure." | |
1a2b6c52 | 632 | (interactive) |
da4ce263 RS |
633 | (if (looking-at "\\s ") |
634 | (forward-sexp 1)) | |
635 | (if (not (looking-at pascal-defun-re)) | |
636 | (pascal-beg-of-defun)) | |
637 | (forward-char 1) | |
638 | (let ((nest 0) (func 1) | |
a1506d29 | 639 | (reg (concat pascal-beg-block-re "\\|" |
da4ce263 RS |
640 | pascal-end-block-re "\\|" |
641 | pascal-defun-re))) | |
642 | (while (and (/= func 0) | |
643 | (re-search-forward reg nil 'move)) | |
644 | (cond ((let ((state (save-excursion | |
645 | (parse-partial-sexp (point-min) (point))))) | |
646 | (or (nth 3 state) (nth 4 state))) ; Inside string or comment | |
647 | ()) | |
648 | ((match-end 1) | |
649 | (setq nest (1+ nest)) | |
650 | (if (save-excursion | |
651 | (goto-char (match-beginning 0)) | |
652 | (looking-at "\\<record\\>")) | |
653 | (setq func (1+ func)))) | |
654 | ((match-end 2) | |
655 | (setq nest (1- nest)) | |
656 | (if (= nest 0) | |
657 | (setq func (1- func)))) | |
658 | ((match-end 3) | |
659 | (setq func (1+ func)))))) | |
660 | (forward-line 1)) | |
1a2b6c52 | 661 | |
3a3ee445 RS |
662 | (defun pascal-end-of-statement () |
663 | "Move forward to end of current statement." | |
664 | (interactive) | |
a0bd2457 RS |
665 | (let ((parse-sexp-ignore-comments t) |
666 | (nest 0) pos | |
3a3ee445 RS |
667 | (regexp (concat "\\(" pascal-beg-block-re "\\)\\|\\(" |
668 | pascal-end-block-re "\\)"))) | |
669 | (if (not (looking-at "[ \t\n]")) (forward-sexp -1)) | |
670 | (or (looking-at pascal-beg-block-re) | |
671 | ;; Skip to end of statement | |
672 | (setq pos (catch 'found | |
673 | (while t | |
674 | (forward-sexp 1) | |
675 | (cond ((looking-at "[ \t]*;") | |
676 | (skip-chars-forward "^;") | |
677 | (forward-char 1) | |
678 | (throw 'found (point))) | |
679 | ((save-excursion | |
680 | (forward-sexp -1) | |
681 | (looking-at pascal-beg-block-re)) | |
682 | (goto-char (match-beginning 0)) | |
683 | (throw 'found nil)) | |
684 | ((eobp) | |
685 | (throw 'found (point)))))))) | |
686 | (if (not pos) | |
687 | ;; Skip a whole block | |
688 | (catch 'found | |
689 | (while t | |
690 | (re-search-forward regexp nil 'move) | |
a1506d29 | 691 | (setq nest (if (match-end 1) |
3a3ee445 RS |
692 | (1+ nest) |
693 | (1- nest))) | |
694 | (cond ((eobp) | |
695 | (throw 'found (point))) | |
696 | ((= 0 nest) | |
697 | (throw 'found (pascal-end-of-statement)))))) | |
698 | pos))) | |
699 | ||
1a2b6c52 | 700 | (defun pascal-downcase-keywords () |
da4ce263 | 701 | "Downcase all Pascal keywords in the buffer." |
1a2b6c52 RS |
702 | (interactive) |
703 | (pascal-change-keywords 'downcase-word)) | |
704 | ||
705 | (defun pascal-upcase-keywords () | |
da4ce263 | 706 | "Upcase all Pascal keywords in the buffer." |
1a2b6c52 RS |
707 | (interactive) |
708 | (pascal-change-keywords 'upcase-word)) | |
709 | ||
710 | (defun pascal-capitalize-keywords () | |
da4ce263 | 711 | "Capitalize all Pascal keywords in the buffer." |
1a2b6c52 RS |
712 | (interactive) |
713 | (pascal-change-keywords 'capitalize-word)) | |
714 | ||
da4ce263 | 715 | ;; Change the keywords according to argument. |
1a2b6c52 | 716 | (defun pascal-change-keywords (change-word) |
1a2b6c52 | 717 | (save-excursion |
da4ce263 RS |
718 | (let ((keyword-re (concat "\\<\\(" |
719 | (mapconcat 'identity pascal-keywords "\\|") | |
720 | "\\)\\>"))) | |
721 | (goto-char (point-min)) | |
722 | (while (re-search-forward keyword-re nil t) | |
723 | (funcall change-word -1))))) | |
724 | ||
725 | \f | |
1a2b6c52 RS |
726 | |
727 | ;;; | |
728 | ;;; Other functions | |
729 | ;;; | |
1a2b6c52 | 730 | (defun pascal-set-auto-comments () |
da4ce263 RS |
731 | "Insert `{ case }' or `{ NAME }' on this line if appropriate. |
732 | Insert `{ case }' if there is an `end' on the line which | |
733 | ends a case block. Insert `{ NAME }' if there is an `end' | |
734 | on the line which ends a function or procedure named NAME." | |
1a2b6c52 RS |
735 | (save-excursion |
736 | (forward-line -1) | |
737 | (skip-chars-forward " \t") | |
da4ce263 | 738 | (if (and (looking-at "\\<end;") |
1a2b6c52 RS |
739 | (not (save-excursion |
740 | (end-of-line) | |
da4ce263 | 741 | (search-backward "{" (pascal-get-beg-of-line) t)))) |
81aca4f4 RS |
742 | (let ((type (car (pascal-calculate-indent)))) |
743 | (if (eq type 'declaration) | |
744 | () | |
745 | (if (eq type 'case) | |
746 | ;; This is a case block | |
747 | (progn | |
748 | (end-of-line) | |
749 | (delete-horizontal-space) | |
750 | (insert " { case }")) | |
751 | (let ((nest 1)) | |
752 | ;; Check if this is the end of a function | |
753 | (save-excursion | |
754 | (while (not (or (looking-at pascal-defun-re) (bobp))) | |
755 | (backward-sexp 1) | |
756 | (cond ((looking-at pascal-beg-block-re) | |
757 | (setq nest (1- nest))) | |
758 | ((looking-at pascal-end-block-re) | |
759 | (setq nest (1+ nest))))) | |
760 | (if (bobp) | |
761 | (setq nest 1))) | |
762 | (if (zerop nest) | |
763 | (progn | |
764 | (end-of-line) | |
765 | (delete-horizontal-space) | |
766 | (insert " { ") | |
767 | (let (b e) | |
768 | (save-excursion | |
769 | (setq b (progn (pascal-beg-of-defun) | |
770 | (skip-chars-forward "^ \t") | |
771 | (skip-chars-forward " \t") | |
772 | (point)) | |
773 | e (progn (skip-chars-forward "a-zA-Z0-9_") | |
774 | (point)))) | |
775 | (insert-buffer-substring (current-buffer) b e)) | |
776 | (insert " }")))))))))) | |
1a2b6c52 | 777 | |
da4ce263 RS |
778 | \f |
779 | ||
1a2b6c52 | 780 | ;;; |
da4ce263 RS |
781 | ;;; Indentation |
782 | ;;; | |
783 | (defconst pascal-indent-alist | |
784 | '((block . (+ ind pascal-indent-level)) | |
785 | (case . (+ ind pascal-case-indent)) | |
9f51be89 | 786 | (caseblock . ind) (cpp . 0) |
da4ce263 RS |
787 | (declaration . (+ ind pascal-indent-level)) |
788 | (paramlist . (pascal-indent-paramlist t)) | |
9f92e5d9 | 789 | (comment . (pascal-indent-comment)) |
da4ce263 | 790 | (defun . ind) (contexp . ind) |
27b53c17 | 791 | (unknown . ind) (string . 0) (progbeg . 0))) |
da4ce263 | 792 | |
1a2b6c52 | 793 | (defun pascal-indent-command () |
da4ce263 RS |
794 | "Indent for special part of code." |
795 | (let* ((indent-str (pascal-calculate-indent)) | |
86ac52df | 796 | (type (car indent-str))) |
3a3ee445 RS |
797 | (cond ((and (eq type 'paramlist) |
798 | (or (memq 'all pascal-auto-lineup) | |
799 | (memq 'paramlist pascal-auto-lineup))) | |
da4ce263 RS |
800 | (pascal-indent-paramlist) |
801 | (pascal-indent-paramlist)) | |
3a3ee445 RS |
802 | ((and (eq type 'declaration) |
803 | (or (memq 'all pascal-auto-lineup) | |
804 | (memq 'declaration pascal-auto-lineup))) | |
da4ce263 | 805 | (pascal-indent-declaration)) |
3a3ee445 RS |
806 | ((and (eq type 'case) (not (looking-at "^[ \t]*$")) |
807 | (or (memq 'all pascal-auto-lineup) | |
808 | (memq 'case pascal-auto-lineup))) | |
da4ce263 RS |
809 | (pascal-indent-case))) |
810 | (if (looking-at "[ \t]+$") | |
811 | (skip-chars-forward " \t")))) | |
1a2b6c52 RS |
812 | |
813 | (defun pascal-indent-line () | |
da4ce263 RS |
814 | "Indent current line as a Pascal statement." |
815 | (let* ((indent-str (pascal-calculate-indent)) | |
816 | (type (car indent-str)) | |
817 | (ind (car (cdr indent-str)))) | |
27b53c17 RS |
818 | ;; Labels should not be indented. |
819 | (if (and (looking-at "^[0-9a-zA-Z]+[ \t]*:[^=]") | |
820 | (not (eq type 'declaration))) | |
da4ce263 RS |
821 | (search-forward ":" nil t)) |
822 | (delete-horizontal-space) | |
27b53c17 RS |
823 | (cond (; Some things should not be indented |
824 | (or (and (eq type 'declaration) (looking-at pascal-declaration-re)) | |
825 | (eq type 'cpp)) | |
826 | ()) | |
827 | (; Other things should have no extra indent | |
828 | (looking-at pascal-noindent-re) | |
829 | (indent-to ind)) | |
830 | (; Nested functions should be indented | |
831 | (looking-at pascal-defun-re) | |
832 | (if (and pascal-indent-nested-functions | |
833 | (eq type 'defun)) | |
834 | (indent-to (+ ind pascal-indent-level)) | |
835 | (indent-to ind))) | |
836 | (; But most lines are treated this way | |
837 | (indent-to (eval (cdr (assoc type pascal-indent-alist)))) | |
838 | )))) | |
da4ce263 RS |
839 | |
840 | (defun pascal-calculate-indent () | |
841 | "Calculate the indent of the current Pascal line. | |
842 | Return a list of two elements: (INDENT-TYPE INDENT-LEVEL)." | |
843 | (save-excursion | |
a0bd2457 RS |
844 | (let* ((parse-sexp-ignore-comments t) |
845 | (oldpos (point)) | |
da4ce263 | 846 | (state (save-excursion (parse-partial-sexp (point-min) (point)))) |
9f51be89 | 847 | (nest 0) (par 0) (complete (looking-at "[ \t]*end\\>")) |
27b53c17 RS |
848 | (elsed (looking-at "[ \t]*else\\>")) (funccnt 0) |
849 | (did-func (looking-at "[ \t]*\\(procedure\\|function\\)\\>")) | |
da4ce263 RS |
850 | (type (catch 'nesting |
851 | ;; Check if inside a string, comment or parenthesis | |
852 | (cond ((nth 3 state) (throw 'nesting 'string)) | |
853 | ((nth 4 state) (throw 'nesting 'comment)) | |
854 | ((> (car state) 0) | |
855 | (goto-char (scan-lists (point) -1 (car state))) | |
9f51be89 RS |
856 | (setq par (1+ (current-column)))) |
857 | ((save-excursion (beginning-of-line) | |
858 | (eq (following-char) ?#)) | |
859 | (throw 'nesting 'cpp))) | |
da4ce263 RS |
860 | ;; Loop until correct indent is found |
861 | (while t | |
862 | (backward-sexp 1) | |
9f51be89 RS |
863 | (cond (;--Escape from case statements |
864 | (and (looking-at "[A-Za-z0-9]+[ \t]*:[^=]") | |
865 | (not complete) | |
866 | (save-excursion (skip-chars-backward " \t") | |
867 | (bolp)) | |
868 | (= (save-excursion | |
869 | (end-of-line) (backward-sexp) (point)) | |
870 | (point)) | |
871 | (> (save-excursion (goto-char oldpos) | |
872 | (beginning-of-line) | |
873 | (point)) | |
874 | (point))) | |
875 | (throw 'nesting 'caseblock)) | |
27b53c17 RS |
876 | (;--Beginning of program |
877 | (looking-at pascal-progbeg-re) | |
878 | (throw 'nesting 'progbeg)) | |
879 | (;--No known statements | |
880 | (bobp) | |
881 | (throw 'nesting 'progbeg)) | |
9f51be89 | 882 | (;--Nest block outwards |
da4ce263 RS |
883 | (looking-at pascal-beg-block-re) |
884 | (if (= nest 0) | |
885 | (cond ((looking-at "case\\>") | |
da4ce263 RS |
886 | (throw 'nesting 'case)) |
887 | ((looking-at "record\\>") | |
888 | (throw 'nesting 'declaration)) | |
f6807db3 | 889 | (t (throw 'nesting 'block))) |
27b53c17 RS |
890 | (if (and (looking-at "record\\>") (= nest 1)) |
891 | (setq funccnt (1- funccnt))) | |
da4ce263 RS |
892 | (setq nest (1- nest)))) |
893 | (;--Nest block inwards | |
894 | (looking-at pascal-end-block-re) | |
f6807db3 RS |
895 | (if (and (looking-at "end\\s ") |
896 | elsed (not complete)) | |
897 | (throw 'nesting 'block)) | |
27b53c17 RS |
898 | (if (= nest 0) |
899 | (setq funccnt (1+ funccnt))) | |
da4ce263 RS |
900 | (setq complete t |
901 | nest (1+ nest))) | |
902 | (;--Defun (or parameter list) | |
27b53c17 RS |
903 | (and (looking-at pascal-defun-re) |
904 | (progn (setq funccnt (1- funccnt) | |
905 | did-func t) | |
906 | (or (bolp) (< funccnt 0)))) | |
907 | ;; Prevent searching whole buffer | |
908 | (if (and (bolp) (>= funccnt 0)) | |
909 | (throw 'nesting 'progbeg)) | |
da4ce263 RS |
910 | (if (= 0 par) |
911 | (throw 'nesting 'defun) | |
912 | (setq par 0) | |
913 | (let ((n 0)) | |
914 | (while (re-search-forward | |
915 | "\\(\\<record\\>\\)\\|\\<end\\>" | |
916 | oldpos t) | |
917 | (if (match-end 1) | |
918 | (setq n (1+ n)) (setq n (1- n)))) | |
919 | (if (> n 0) | |
920 | (throw 'nesting 'declaration) | |
921 | (throw 'nesting 'paramlist))))) | |
922 | (;--Declaration part | |
27b53c17 RS |
923 | (and (looking-at pascal-declaration-re) |
924 | (not did-func) | |
925 | (= funccnt 0)) | |
f6807db3 RS |
926 | (if (save-excursion |
927 | (goto-char oldpos) | |
928 | (forward-line -1) | |
929 | (looking-at "^[ \t]*$")) | |
da4ce263 RS |
930 | (throw 'nesting 'unknown) |
931 | (throw 'nesting 'declaration))) | |
932 | (;--If, else or while statement | |
933 | (and (not complete) | |
934 | (looking-at pascal-sub-block-re)) | |
935 | (throw 'nesting 'block)) | |
936 | (;--Found complete statement | |
937 | (save-excursion (forward-sexp 1) | |
938 | (= (following-char) ?\;)) | |
939 | (setq complete t)) | |
da4ce263 | 940 | ))))) |
9f51be89 | 941 | |
da4ce263 | 942 | ;; Return type of block and indent level. |
a1506d29 | 943 | (if (> par 0) ; Unclosed Parenthesis |
da4ce263 RS |
944 | (list 'contexp par) |
945 | (list type (pascal-indent-level)))))) | |
946 | ||
947 | (defun pascal-indent-level () | |
948 | "Return the indent-level the current statement has. | |
949 | Do not count labels, case-statements or records." | |
1a2b6c52 RS |
950 | (save-excursion |
951 | (beginning-of-line) | |
da4ce263 RS |
952 | (if (looking-at "[ \t]*[0-9a-zA-Z]+[ \t]*:[^=]") |
953 | (search-forward ":" nil t) | |
954 | (if (looking-at ".*=[ \t]*record\\>") | |
955 | (search-forward "=" nil t))) | |
1a2b6c52 RS |
956 | (skip-chars-forward " \t") |
957 | (current-column))) | |
958 | ||
9f92e5d9 GM |
959 | (defun pascal-indent-comment () |
960 | "Return indent for current comment." | |
961 | (save-excursion | |
962 | (re-search-backward "\\((\\*\\)\\|{" nil t) | |
963 | (if (match-beginning 1) | |
964 | (1+ (current-column)) | |
965 | (current-column)))) | |
da4ce263 RS |
966 | |
967 | (defun pascal-indent-case () | |
968 | "Indent within case statements." | |
a0bd2457 RS |
969 | (let ((savepos (point-marker)) |
970 | (end (prog2 | |
81aca4f4 RS |
971 | (end-of-line) |
972 | (point-marker) | |
da4ce263 | 973 | (re-search-backward "\\<case\\>" nil t))) |
86ac52df | 974 | (beg (point)) |
da4ce263 RS |
975 | (ind 0)) |
976 | ;; Get right indent | |
f80235e3 | 977 | (while (< (point) end) |
a1506d29 | 978 | (if (re-search-forward |
81aca4f4 RS |
979 | "^[ \t]*[^ \t,:]+[ \t]*\\(,[ \t]*[^ \t,:]+[ \t]*\\)*:" |
980 | (marker-position end) 'move) | |
981 | (forward-char -1)) | |
f80235e3 | 982 | (if (< (point) end) |
2e952aac RS |
983 | (progn |
984 | (delete-horizontal-space) | |
985 | (if (> (current-column) ind) | |
986 | (setq ind (current-column))) | |
987 | (pascal-end-of-statement)))) | |
da4ce263 RS |
988 | (goto-char beg) |
989 | ;; Indent all case statements | |
f80235e3 | 990 | (while (< (point) end) |
81aca4f4 | 991 | (if (re-search-forward |
9f51be89 | 992 | "^[ \t]*[^][ \t,\\.:]+[ \t]*\\(,[ \t]*[^ \t,:]+[ \t]*\\)*:" |
81aca4f4 | 993 | (marker-position end) 'move) |
da4ce263 RS |
994 | (forward-char -1)) |
995 | (indent-to (1+ ind)) | |
996 | (if (/= (following-char) ?:) | |
997 | () | |
998 | (forward-char 1) | |
999 | (delete-horizontal-space) | |
3a3ee445 | 1000 | (insert " ")) |
3a3ee445 | 1001 | (pascal-end-of-statement)) |
a0bd2457 | 1002 | (goto-char savepos))) |
da4ce263 RS |
1003 | |
1004 | (defun pascal-indent-paramlist (&optional arg) | |
1005 | "Indent current line in parameterlist. | |
1006 | If optional arg is non-nil, just return the | |
1007 | indent of the current line in parameterlist." | |
1a2b6c52 | 1008 | (save-excursion |
da4ce263 RS |
1009 | (let* ((oldpos (point)) |
1010 | (stpos (progn (goto-char (scan-lists (point) -1 1)) (point))) | |
1011 | (stcol (1+ (current-column))) | |
a1506d29 | 1012 | (edpos (progn (pascal-declaration-end) |
da4ce263 RS |
1013 | (search-backward ")" (pascal-get-beg-of-line) t) |
1014 | (point))) | |
1015 | (usevar (re-search-backward "\\<var\\>" stpos t))) | |
1016 | (if arg (progn | |
1017 | ;; If arg, just return indent | |
1018 | (goto-char oldpos) | |
1019 | (beginning-of-line) | |
1020 | (if (or (not usevar) (looking-at "[ \t]*var\\>")) | |
1021 | stcol (+ 4 stcol))) | |
1022 | (goto-char stpos) | |
1023 | (forward-char 1) | |
1024 | (delete-horizontal-space) | |
1025 | (if (and usevar (not (looking-at "var\\>"))) | |
1026 | (indent-to (+ 4 stcol))) | |
1027 | (pascal-indent-declaration nil stpos edpos))))) | |
1028 | ||
1029 | (defun pascal-indent-declaration (&optional arg start end) | |
1030 | "Indent current lines as declaration, lining up the `:'s or `='s." | |
1031 | (let ((pos (point-marker))) | |
1032 | (if (and (not (or arg start)) (not (pascal-declaration-beg))) | |
1033 | () | |
a1506d29 | 1034 | (let ((lineup (if (or (looking-at "\\<var\\>\\|\\<record\\>") arg start) |
da4ce263 RS |
1035 | ":" "=")) |
1036 | (stpos (if start start | |
1037 | (forward-word 2) (backward-word 1) (point))) | |
1038 | (edpos (set-marker (make-marker) | |
1039 | (if end end | |
1040 | (max (progn (pascal-declaration-end) | |
1041 | (point)) | |
1042 | pos)))) | |
1043 | ind) | |
1044 | ||
1045 | (goto-char stpos) | |
1046 | ;; Indent lines in record block | |
1047 | (if arg | |
f80235e3 | 1048 | (while (<= (point) edpos) |
da4ce263 RS |
1049 | (beginning-of-line) |
1050 | (delete-horizontal-space) | |
1051 | (if (looking-at "end\\>") | |
1052 | (indent-to arg) | |
1053 | (indent-to (+ arg pascal-indent-level))) | |
1054 | (forward-line 1))) | |
1055 | ||
1056 | ;; Do lineup | |
1057 | (setq ind (pascal-get-lineup-indent stpos edpos lineup)) | |
1058 | (goto-char stpos) | |
f80235e3 | 1059 | (while (and (<= (point) edpos) (not (eobp))) |
da4ce263 RS |
1060 | (if (search-forward lineup (pascal-get-end-of-line) 'move) |
1061 | (forward-char -1)) | |
1062 | (delete-horizontal-space) | |
1063 | (indent-to ind) | |
1064 | (if (not (looking-at lineup)) | |
1065 | (forward-line 1) ; No more indent if there is no : or = | |
1066 | (forward-char 1) | |
1067 | (delete-horizontal-space) | |
1068 | (insert " ") | |
1069 | ;; Indent record block | |
1070 | (if (looking-at "record\\>") | |
1071 | (pascal-indent-declaration (current-column))) | |
1072 | (forward-line 1))))) | |
1073 | ||
1074 | ;; If arg - move point | |
1075 | (if arg (forward-line -1) | |
f80235e3 | 1076 | (goto-char pos)))) |
da4ce263 RS |
1077 | |
1078 | ; "Return the indent level that will line up several lines within the region | |
1079 | ;from b to e nicely. The lineup string is str." | |
1080 | (defun pascal-get-lineup-indent (b e str) | |
1081 | (save-excursion | |
1082 | (let ((ind 0) | |
27b53c17 | 1083 | (reg (concat str "\\|\\(\\<record\\>\\)\\|" pascal-defun-re))) |
da4ce263 RS |
1084 | (goto-char b) |
1085 | ;; Get rightmost position | |
1086 | (while (< (point) e) | |
27b53c17 RS |
1087 | (and (re-search-forward reg (min e (pascal-get-end-of-line 2)) 'move) |
1088 | (cond ((match-beginning 1) | |
1089 | ;; Skip record blocks | |
1090 | (pascal-declaration-end)) | |
1091 | ((match-beginning 2) | |
1092 | ;; We have entered a new procedure. Exit. | |
1093 | (goto-char e)) | |
1094 | (t | |
1095 | (goto-char (match-beginning 0)) | |
1096 | (skip-chars-backward " \t") | |
1097 | (if (> (current-column) ind) | |
1098 | (setq ind (current-column))) | |
1099 | (goto-char (match-end 0)) | |
1100 | (end-of-line) | |
1101 | )))) | |
da4ce263 RS |
1102 | ;; In case no lineup was found |
1103 | (if (> ind 0) | |
1104 | (1+ ind) | |
1105 | ;; No lineup-string found | |
1106 | (goto-char b) | |
1107 | (end-of-line) | |
1108 | (skip-chars-backward " \t") | |
1109 | (1+ (current-column)))))) | |
a1506d29 | 1110 | |
da4ce263 RS |
1111 | \f |
1112 | ||
1113 | ;;; | |
1114 | ;;; Completion | |
1115 | ;;; | |
9566dc15 RS |
1116 | (defvar pascal-str nil) |
1117 | (defvar pascal-all nil) | |
1118 | (defvar pascal-pred nil) | |
1119 | (defvar pascal-buffer-to-use nil) | |
1120 | (defvar pascal-flag nil) | |
1121 | ||
da4ce263 RS |
1122 | (defun pascal-string-diff (str1 str2) |
1123 | "Return index of first letter where STR1 and STR2 differs." | |
1124 | (catch 'done | |
1125 | (let ((diff 0)) | |
1126 | (while t | |
1127 | (if (or (> (1+ diff) (length str1)) | |
1128 | (> (1+ diff) (length str2))) | |
1129 | (throw 'done diff)) | |
1130 | (or (equal (aref str1 diff) (aref str2 diff)) | |
1131 | (throw 'done diff)) | |
1132 | (setq diff (1+ diff)))))) | |
1133 | ||
1134 | ;; Calculate all possible completions for functions if argument is `function', | |
1135 | ;; completions for procedures if argument is `procedure' or both functions and | |
1136 | ;; procedures otherwise. | |
1137 | ||
1138 | (defun pascal-func-completion (type) | |
1139 | ;; Build regular expression for function/procedure names | |
9566dc15 RS |
1140 | (if (string= pascal-str "") |
1141 | (setq pascal-str "[a-zA-Z_]")) | |
1142 | (let ((pascal-str (concat (cond | |
1143 | ((eq type 'procedure) "\\<\\(procedure\\)\\s +") | |
1144 | ((eq type 'function) "\\<\\(function\\)\\s +") | |
1145 | (t "\\<\\(function\\|procedure\\)\\s +")) | |
1146 | "\\<\\(" pascal-str "[a-zA-Z0-9_.]*\\)\\>")) | |
da4ce263 | 1147 | match) |
a1506d29 | 1148 | |
da4ce263 RS |
1149 | (if (not (looking-at "\\<\\(function\\|procedure\\)\\>")) |
1150 | (re-search-backward "\\<\\(function\\|procedure\\)\\>" nil t)) | |
1151 | (forward-char 1) | |
1152 | ||
1153 | ;; Search through all reachable functions | |
1154 | (while (pascal-beg-of-defun) | |
9566dc15 | 1155 | (if (re-search-forward pascal-str (pascal-get-end-of-line) t) |
da4ce263 RS |
1156 | (progn (setq match (buffer-substring (match-beginning 2) |
1157 | (match-end 2))) | |
9566dc15 RS |
1158 | (if (or (null pascal-pred) |
1159 | (funcall pascal-pred match)) | |
1160 | (setq pascal-all (cons match pascal-all))))) | |
da4ce263 RS |
1161 | (goto-char (match-beginning 0))))) |
1162 | ||
1163 | (defun pascal-get-completion-decl () | |
1164 | ;; Macro for searching through current declaration (var, type or const) | |
f80235e3 | 1165 | ;; for matches of `str' and adding the occurrence to `all' |
da4ce263 RS |
1166 | (let ((end (save-excursion (pascal-declaration-end) |
1167 | (point))) | |
1168 | match) | |
1169 | ;; Traverse lines | |
1170 | (while (< (point) end) | |
1171 | (if (re-search-forward "[:=]" (pascal-get-end-of-line) t) | |
1172 | ;; Traverse current line | |
a1506d29 JB |
1173 | (while (and (re-search-backward |
1174 | (concat "\\((\\|\\<\\(var\\|type\\|const\\)\\>\\)\\|" | |
da4ce263 RS |
1175 | pascal-symbol-re) |
1176 | (pascal-get-beg-of-line) t) | |
1177 | (not (match-end 1))) | |
1178 | (setq match (buffer-substring (match-beginning 0) (match-end 0))) | |
9566dc15 RS |
1179 | (if (string-match (concat "\\<" pascal-str) match) |
1180 | (if (or (null pascal-pred) | |
1181 | (funcall pascal-pred match)) | |
1182 | (setq pascal-all (cons match pascal-all)))))) | |
da4ce263 RS |
1183 | (if (re-search-forward "\\<record\\>" (pascal-get-end-of-line) t) |
1184 | (pascal-declaration-end) | |
1185 | (forward-line 1))))) | |
1186 | ||
1187 | (defun pascal-type-completion () | |
1188 | "Calculate all possible completions for types." | |
1189 | (let ((start (point)) | |
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 | |
1203 | (pascal-get-completion-decl)))))) | |
1204 | ||
1205 | (defun pascal-var-completion () | |
1206 | "Calculate all possible completions for variables (or constants)." | |
1207 | (let ((start (point)) | |
1208 | goon twice) | |
1209 | ;; Search for all reachable var declarations | |
1210 | (while (or (pascal-beg-of-defun) | |
1211 | (setq goon (not goon))) | |
1212 | (save-excursion | |
1213 | (if (> start (prog1 (save-excursion (pascal-end-of-defun) | |
1214 | (point)))) | |
4a6fd75f | 1215 | () ; Declarations not reachable |
da4ce263 RS |
1216 | (if (search-forward "(" (pascal-get-end-of-line) t) |
1217 | ;; Check parameterlist | |
1218 | (pascal-get-completion-decl)) | |
1219 | (setq twice 2) | |
1220 | (while (>= (setq twice (1- twice)) 0) | |
1221 | (cond ((and (re-search-forward | |
1222 | (concat "\\<\\(var\\|const\\)\\>\\|" | |
1223 | "\\<\\(begin\\|function\\|procedure\\)\\>") | |
1224 | start t) | |
1225 | (not (match-end 2))) | |
1226 | ;; Check var/const declarations | |
1227 | (pascal-get-completion-decl)) | |
1228 | ((match-end 2) | |
1229 | (setq twice 0))))))))) | |
1230 | ||
1231 | ||
1232 | (defun pascal-keyword-completion (keyword-list) | |
1233 | "Give list of all possible completions of keywords in KEYWORD-LIST." | |
a1506d29 | 1234 | (mapcar '(lambda (s) |
9566dc15 RS |
1235 | (if (string-match (concat "\\<" pascal-str) s) |
1236 | (if (or (null pascal-pred) | |
1237 | (funcall pascal-pred s)) | |
1238 | (setq pascal-all (cons s pascal-all))))) | |
da4ce263 RS |
1239 | keyword-list)) |
1240 | ||
1241 | ;; Function passed to completing-read, try-completion or | |
1242 | ;; all-completions to get completion on STR. If predicate is non-nil, | |
1243 | ;; it must be a function to be called for every match to check if this | |
1244 | ;; should really be a match. If flag is t, the function returns a list | |
1245 | ;; of all possible completions. If it is nil it returns a string, the | |
1246 | ;; longest possible completion, or t if STR is an exact match. If flag | |
1247 | ;; is 'lambda, the function returns t if STR is an exact match, nil | |
1248 | ;; otherwise. | |
1249 | ||
9566dc15 | 1250 | (defun pascal-completion (pascal-str pascal-pred pascal-flag) |
da4ce263 | 1251 | (save-excursion |
9566dc15 | 1252 | (let ((pascal-all nil)) |
da4ce263 | 1253 | ;; Set buffer to use for searching labels. This should be set |
4a6fd75f | 1254 | ;; within functions which use pascal-completions |
9566dc15 | 1255 | (set-buffer pascal-buffer-to-use) |
da4ce263 RS |
1256 | |
1257 | ;; Determine what should be completed | |
1258 | (let ((state (car (pascal-calculate-indent)))) | |
1259 | (cond (;--Within a declaration or parameterlist | |
1260 | (or (eq state 'declaration) (eq state 'paramlist) | |
1261 | (and (eq state 'defun) | |
1262 | (save-excursion | |
3a3ee445 RS |
1263 | (re-search-backward ")[ \t]*:" |
1264 | (pascal-get-beg-of-line) t)))) | |
da4ce263 RS |
1265 | (if (or (eq state 'paramlist) (eq state 'defun)) |
1266 | (pascal-beg-of-defun)) | |
1267 | (pascal-type-completion) | |
1268 | (pascal-keyword-completion pascal-type-keywords)) | |
1269 | (;--Starting a new statement | |
3a3ee445 RS |
1270 | (and (not (eq state 'contexp)) |
1271 | (save-excursion | |
1272 | (skip-chars-backward "a-zA-Z0-9_.") | |
1273 | (backward-sexp 1) | |
1274 | (or (looking-at pascal-nosemi-re) | |
1275 | (progn | |
1276 | (forward-sexp 1) | |
1277 | (looking-at "\\s *\\(;\\|:[^=]\\)"))))) | |
1278 | (save-excursion (pascal-var-completion)) | |
1279 | (pascal-func-completion 'procedure) | |
1280 | (pascal-keyword-completion pascal-start-keywords)) | |
da4ce263 RS |
1281 | (t;--Anywhere else |
1282 | (save-excursion (pascal-var-completion)) | |
1283 | (pascal-func-completion 'function) | |
81aca4f4 | 1284 | (pascal-keyword-completion pascal-separator-keywords)))) |
a1506d29 | 1285 | |
da4ce263 RS |
1286 | ;; Now we have built a list of all matches. Give response to caller |
1287 | (pascal-completion-response)))) | |
1288 | ||
1289 | (defun pascal-completion-response () | |
9566dc15 | 1290 | (cond ((or (equal pascal-flag 'lambda) (null pascal-flag)) |
da4ce263 | 1291 | ;; This was not called by all-completions |
9566dc15 | 1292 | (if (null pascal-all) |
da4ce263 RS |
1293 | ;; Return nil if there was no matching label |
1294 | nil | |
1295 | ;; Get longest string common in the labels | |
9566dc15 RS |
1296 | (let* ((elm (cdr pascal-all)) |
1297 | (match (car pascal-all)) | |
da4ce263 | 1298 | (min (length match)) |
f80235e3 | 1299 | tmp) |
9566dc15 | 1300 | (if (string= match pascal-str) |
da4ce263 RS |
1301 | ;; Return t if first match was an exact match |
1302 | (setq match t) | |
1303 | (while (not (null elm)) | |
1304 | ;; Find longest common string | |
1305 | (if (< (setq tmp (pascal-string-diff match (car elm))) min) | |
1306 | (progn | |
1307 | (setq min tmp) | |
1308 | (setq match (substring match 0 min)))) | |
1309 | ;; Terminate with match=t if this is an exact match | |
9566dc15 | 1310 | (if (string= (car elm) pascal-str) |
da4ce263 RS |
1311 | (progn |
1312 | (setq match t) | |
1313 | (setq elm nil)) | |
1314 | (setq elm (cdr elm))))) | |
1315 | ;; If this is a test just for exact match, return nil ot t | |
9566dc15 | 1316 | (if (and (equal pascal-flag 'lambda) (not (equal match 't))) |
da4ce263 RS |
1317 | nil |
1318 | match)))) | |
1319 | ;; If flag is t, this was called by all-completions. Return | |
1320 | ;; list of all possible completions | |
9566dc15 RS |
1321 | (pascal-flag |
1322 | pascal-all))) | |
da4ce263 RS |
1323 | |
1324 | (defvar pascal-last-word-numb 0) | |
1325 | (defvar pascal-last-word-shown nil) | |
1326 | (defvar pascal-last-completions nil) | |
1327 | ||
1328 | (defun pascal-complete-word () | |
1329 | "Complete word at current point. | |
1330 | \(See also `pascal-toggle-completions', `pascal-type-keywords', | |
81aca4f4 | 1331 | `pascal-start-keywords' and `pascal-separator-keywords'.)" |
da4ce263 RS |
1332 | (interactive) |
1333 | (let* ((b (save-excursion (skip-chars-backward "a-zA-Z0-9_") (point))) | |
1334 | (e (save-excursion (skip-chars-forward "a-zA-Z0-9_") (point))) | |
9566dc15 | 1335 | (pascal-str (buffer-substring b e)) |
da4ce263 | 1336 | ;; The following variable is used in pascal-completion |
9566dc15 | 1337 | (pascal-buffer-to-use (current-buffer)) |
da4ce263 | 1338 | (allcomp (if (and pascal-toggle-completions |
9566dc15 | 1339 | (string= pascal-last-word-shown pascal-str)) |
da4ce263 | 1340 | pascal-last-completions |
9566dc15 | 1341 | (all-completions pascal-str 'pascal-completion))) |
da4ce263 RS |
1342 | (match (if pascal-toggle-completions |
1343 | "" (try-completion | |
9566dc15 RS |
1344 | pascal-str (mapcar '(lambda (elm) |
1345 | (cons elm 0)) allcomp))))) | |
da4ce263 RS |
1346 | ;; Delete old string |
1347 | (delete-region b e) | |
1348 | ||
1349 | ;; Toggle-completions inserts whole labels | |
1350 | (if pascal-toggle-completions | |
1a2b6c52 | 1351 | (progn |
da4ce263 RS |
1352 | ;; Update entry number in list |
1353 | (setq pascal-last-completions allcomp | |
a1506d29 | 1354 | pascal-last-word-numb |
da4ce263 RS |
1355 | (if (>= pascal-last-word-numb (1- (length allcomp))) |
1356 | 0 | |
1357 | (1+ pascal-last-word-numb))) | |
1358 | (setq pascal-last-word-shown (elt allcomp pascal-last-word-numb)) | |
1359 | ;; Display next match or same string if no match was found | |
1360 | (if (not (null allcomp)) | |
1361 | (insert "" pascal-last-word-shown) | |
9566dc15 | 1362 | (insert "" pascal-str) |
da4ce263 | 1363 | (message "(No match)"))) |
4a6fd75f | 1364 | ;; The other form of completion does not necessarily do that. |
da4ce263 RS |
1365 | |
1366 | ;; Insert match if found, or the original string if no match | |
1367 | (if (or (null match) (equal match 't)) | |
9566dc15 | 1368 | (progn (insert "" pascal-str) |
da4ce263 RS |
1369 | (message "(No match)")) |
1370 | (insert "" match)) | |
1371 | ;; Give message about current status of completion | |
1372 | (cond ((equal match 't) | |
1373 | (if (not (null (cdr allcomp))) | |
1374 | (message "(Complete but not unique)") | |
1375 | (message "(Sole completion)"))) | |
a1506d29 | 1376 | ;; Display buffer if the current completion didn't help |
da4ce263 | 1377 | ;; on completing the label. |
9566dc15 RS |
1378 | ((and (not (null (cdr allcomp))) (= (length pascal-str) |
1379 | (length match))) | |
da4ce263 | 1380 | (with-output-to-temp-buffer "*Completions*" |
f5fab556 | 1381 | (display-completion-list allcomp pascal-str)) |
da4ce263 RS |
1382 | ;; Wait for a keypress. Then delete *Completion* window |
1383 | (momentary-string-display "" (point)) | |
1384 | (delete-window (get-buffer-window (get-buffer "*Completions*"))) | |
1385 | ))))) | |
1386 | ||
1387 | (defun pascal-show-completions () | |
1388 | "Show all possible completions at current point." | |
1389 | (interactive) | |
1390 | (let* ((b (save-excursion (skip-chars-backward "a-zA-Z0-9_") (point))) | |
1391 | (e (save-excursion (skip-chars-forward "a-zA-Z0-9_") (point))) | |
9566dc15 | 1392 | (pascal-str (buffer-substring b e)) |
da4ce263 | 1393 | ;; The following variable is used in pascal-completion |
9566dc15 | 1394 | (pascal-buffer-to-use (current-buffer)) |
da4ce263 | 1395 | (allcomp (if (and pascal-toggle-completions |
9566dc15 | 1396 | (string= pascal-last-word-shown pascal-str)) |
da4ce263 | 1397 | pascal-last-completions |
9566dc15 | 1398 | (all-completions pascal-str 'pascal-completion)))) |
da4ce263 RS |
1399 | ;; Show possible completions in a temporary buffer. |
1400 | (with-output-to-temp-buffer "*Completions*" | |
f5fab556 | 1401 | (display-completion-list allcomp pascal-str)) |
da4ce263 RS |
1402 | ;; Wait for a keypress. Then delete *Completion* window |
1403 | (momentary-string-display "" (point)) | |
1404 | (delete-window (get-buffer-window (get-buffer "*Completions*"))))) | |
1405 | ||
1406 | ||
1407 | (defun pascal-get-default-symbol () | |
1408 | "Return symbol around current point as a string." | |
1409 | (save-excursion | |
1410 | (buffer-substring (progn | |
1411 | (skip-chars-backward " \t") | |
1412 | (skip-chars-backward "a-zA-Z0-9_") | |
1413 | (point)) | |
1414 | (progn | |
1415 | (skip-chars-forward "a-zA-Z0-9_") | |
1416 | (point))))) | |
1417 | ||
1418 | (defun pascal-build-defun-re (str &optional arg) | |
1419 | "Return function/procedure starting with STR as regular expression. | |
1420 | With optional second arg non-nil, STR is the complete name of the instruction." | |
1421 | (if arg | |
1422 | (concat "^\\(function\\|procedure\\)[ \t]+\\(" str "\\)\\>") | |
1423 | (concat "^\\(function\\|procedure\\)[ \t]+\\(" str "[a-zA-Z0-9_]*\\)\\>"))) | |
1424 | ||
1425 | ;; Function passed to completing-read, try-completion or | |
1426 | ;; all-completions to get completion on any function name. If | |
1427 | ;; predicate is non-nil, it must be a function to be called for every | |
1428 | ;; match to check if this should really be a match. If flag is t, the | |
1429 | ;; function returns a list of all possible completions. If it is nil | |
1430 | ;; it returns a string, the longest possible completion, or t if STR | |
1431 | ;; is an exact match. If flag is 'lambda, the function returns t if | |
1432 | ;; STR is an exact match, nil otherwise. | |
1433 | ||
9566dc15 | 1434 | (defun pascal-comp-defun (pascal-str pascal-pred pascal-flag) |
da4ce263 | 1435 | (save-excursion |
9566dc15 | 1436 | (let ((pascal-all nil) |
da4ce263 RS |
1437 | match) |
1438 | ||
1439 | ;; Set buffer to use for searching labels. This should be set | |
4a6fd75f | 1440 | ;; within functions which use pascal-completions |
9566dc15 | 1441 | (set-buffer pascal-buffer-to-use) |
da4ce263 | 1442 | |
9566dc15 | 1443 | (let ((pascal-str pascal-str)) |
da4ce263 | 1444 | ;; Build regular expression for functions |
9566dc15 RS |
1445 | (if (string= pascal-str "") |
1446 | (setq pascal-str (pascal-build-defun-re "[a-zA-Z_]")) | |
1447 | (setq pascal-str (pascal-build-defun-re pascal-str))) | |
da4ce263 | 1448 | (goto-char (point-min)) |
a1506d29 | 1449 | |
da4ce263 | 1450 | ;; Build a list of all possible completions |
9566dc15 | 1451 | (while (re-search-forward pascal-str nil t) |
da4ce263 | 1452 | (setq match (buffer-substring (match-beginning 2) (match-end 2))) |
9566dc15 RS |
1453 | (if (or (null pascal-pred) |
1454 | (funcall pascal-pred match)) | |
1455 | (setq pascal-all (cons match pascal-all))))) | |
da4ce263 RS |
1456 | |
1457 | ;; Now we have built a list of all matches. Give response to caller | |
1458 | (pascal-completion-response)))) | |
1459 | ||
1460 | (defun pascal-goto-defun () | |
1461 | "Move to specified Pascal function/procedure. | |
1462 | The default is a name found in the buffer around point." | |
1463 | (interactive) | |
1464 | (let* ((default (pascal-get-default-symbol)) | |
1465 | ;; The following variable is used in pascal-comp-function | |
9566dc15 | 1466 | (pascal-buffer-to-use (current-buffer)) |
da4ce263 RS |
1467 | (default (if (pascal-comp-defun default nil 'lambda) |
1468 | default "")) | |
1469 | (label (if (not (string= default "")) | |
1470 | ;; Do completion with default | |
5b76833f | 1471 | (completing-read (concat "Label (default " default "): ") |
da4ce263 RS |
1472 | 'pascal-comp-defun nil t "") |
1473 | ;; There is no default value. Complete without it | |
1474 | (completing-read "Label: " | |
1475 | 'pascal-comp-defun nil t "")))) | |
1476 | ;; If there was no response on prompt, use default value | |
1477 | (if (string= label "") | |
1478 | (setq label default)) | |
1479 | ;; Goto right place in buffer if label is not an empty string | |
1480 | (or (string= label "") | |
1481 | (progn | |
1482 | (goto-char (point-min)) | |
1483 | (re-search-forward (pascal-build-defun-re label t)) | |
1484 | (beginning-of-line))))) | |
1485 | ||
1486 | \f | |
1487 | ||
1488 | ;;; | |
1489 | ;;; Pascal-outline-mode | |
1490 | ;;; | |
86ac52df SM |
1491 | (defvar pascal-outline-map |
1492 | (let ((map (make-sparse-keymap))) | |
1493 | (if (fboundp 'set-keymap-name) | |
1494 | (set-keymap-name pascal-outline-map 'pascal-outline-map)) | |
1495 | (define-key map "\M-\C-a" 'pascal-outline-prev-defun) | |
1496 | (define-key map "\M-\C-e" 'pascal-outline-next-defun) | |
1497 | (define-key map "\C-c\C-d" 'pascal-outline-goto-defun) | |
1498 | (define-key map "\C-c\C-s" 'pascal-show-all) | |
1499 | (define-key map "\C-c\C-h" 'pascal-hide-other-defuns) | |
1500 | map) | |
1501 | "Keymap used in Pascal Outline mode.") | |
1502 | ||
1503 | (define-obsolete-function-alias 'pascal-outline 'pascal-outline-mode) | |
1504 | (define-minor-mode pascal-outline-mode | |
da4ce263 RS |
1505 | "Outline-line minor mode for Pascal mode. |
1506 | When in Pascal Outline mode, portions | |
1507 | of the text being edited may be made invisible. \\<pascal-outline-map> | |
1508 | ||
1509 | Pascal Outline mode provides some additional commands. | |
1510 | ||
1511 | \\[pascal-outline-prev-defun]\ | |
1512 | \t- Move to previous function/procedure, hiding everything else. | |
1513 | \\[pascal-outline-next-defun]\ | |
1514 | \t- Move to next function/procedure, hiding everything else. | |
1515 | \\[pascal-outline-goto-defun]\ | |
1516 | \t- Goto function/procedure prompted for in minibuffer, | |
1517 | \t hide all other functions. | |
1518 | \\[pascal-show-all]\t- Show the whole buffer. | |
1519 | \\[pascal-hide-other-defuns]\ | |
1520 | \t- Hide everything but the current function (function under the cursor). | |
1521 | \\[pascal-outline]\t- Leave pascal-outline-mode." | |
86ac52df SM |
1522 | :init-value nil :lighter " Outl" :keymap pascal-outline-map |
1523 | (add-to-invisibility-spec '(pascal . t)) | |
1524 | (unless pascal-outline-mode | |
1525 | (pascal-show-all))) | |
da4ce263 | 1526 | |
9566dc15 | 1527 | (defun pascal-outline-change (b e pascal-flag) |
86ac52df SM |
1528 | (save-excursion |
1529 | ;; This used to use selective display so the boundaries used by the | |
1530 | ;; callers didn't have to be precise, since it just looked for \n or \^M | |
1531 | ;; and switched them. | |
1532 | (goto-char b) (setq b (line-end-position)) | |
1533 | (goto-char e) (setq e (line-end-position))) | |
1534 | (when (> e b) | |
1535 | ;; We could try and optimize this in the case where the region is | |
1536 | ;; already hidden. But I'm not sure it's worth the trouble. | |
1537 | (remove-overlays b e 'invisible 'pascal) | |
1538 | (when (eq pascal-flag ?\^M) | |
1539 | (let ((ol (make-overlay b e nil t nil))) | |
1540 | (overlay-put ol 'invisible 'pascal) | |
1541 | (overlay-put ol 'evaporate t))))) | |
da4ce263 RS |
1542 | |
1543 | (defun pascal-show-all () | |
1544 | "Show all of the text in the buffer." | |
1545 | (interactive) | |
1546 | (pascal-outline-change (point-min) (point-max) ?\n)) | |
1547 | ||
1548 | (defun pascal-hide-other-defuns () | |
1549 | "Show only the current defun." | |
1550 | (interactive) | |
1551 | (save-excursion | |
1552 | (let ((beg (progn (if (not (looking-at "\\(function\\|procedure\\)\\>")) | |
1553 | (pascal-beg-of-defun)) | |
1554 | (point))) | |
1555 | (end (progn (pascal-end-of-defun) | |
1556 | (backward-sexp 1) | |
1557 | (search-forward "\n\\|\^M" nil t) | |
1558 | (point))) | |
1559 | (opoint (point-min))) | |
1560 | (goto-char (point-min)) | |
1561 | ||
1562 | ;; Hide all functions before current function | |
1563 | (while (re-search-forward "^\\(function\\|procedure\\)\\>" beg 'move) | |
1564 | (pascal-outline-change opoint (1- (match-beginning 0)) ?\^M) | |
1565 | (setq opoint (point)) | |
1566 | ;; Functions may be nested | |
1567 | (if (> (progn (pascal-end-of-defun) (point)) beg) | |
1568 | (goto-char opoint))) | |
1569 | (if (> beg opoint) | |
1570 | (pascal-outline-change opoint (1- beg) ?\^M)) | |
1571 | ||
1572 | ;; Show current function | |
1573 | (pascal-outline-change beg end ?\n) | |
1574 | ;; Hide nested functions | |
1575 | (forward-char 1) | |
1576 | (while (re-search-forward "^\\(function\\|procedure\\)\\>" end 'move) | |
1577 | (setq opoint (point)) | |
1578 | (pascal-end-of-defun) | |
1579 | (pascal-outline-change opoint (point) ?\^M)) | |
1580 | ||
1581 | (goto-char end) | |
1582 | (setq opoint end) | |
1583 | ||
1584 | ;; Hide all function after current function | |
1585 | (while (re-search-forward "^\\(function\\|procedure\\)\\>" nil 'move) | |
1586 | (pascal-outline-change opoint (1- (match-beginning 0)) ?\^M) | |
1587 | (setq opoint (point)) | |
1588 | (pascal-end-of-defun)) | |
1589 | (pascal-outline-change opoint (point-max) ?\^M) | |
1590 | ||
1591 | ;; Hide main program | |
1592 | (if (< (progn (forward-line -1) (point)) end) | |
1a2b6c52 | 1593 | (progn |
da4ce263 RS |
1594 | (goto-char beg) |
1595 | (pascal-end-of-defun) | |
1596 | (backward-sexp 1) | |
1597 | (pascal-outline-change (point) (point-max) ?\^M)))))) | |
1a2b6c52 | 1598 | |
da4ce263 RS |
1599 | (defun pascal-outline-next-defun () |
1600 | "Move to next function/procedure, hiding all others." | |
1601 | (interactive) | |
1602 | (pascal-end-of-defun) | |
1603 | (pascal-hide-other-defuns)) | |
1604 | ||
1605 | (defun pascal-outline-prev-defun () | |
1606 | "Move to previous function/procedure, hiding all others." | |
1607 | (interactive) | |
1608 | (pascal-beg-of-defun) | |
1609 | (pascal-hide-other-defuns)) | |
1610 | ||
1611 | (defun pascal-outline-goto-defun () | |
1612 | "Move to specified function/procedure, hiding all others." | |
1613 | (interactive) | |
1614 | (pascal-goto-defun) | |
1615 | (pascal-hide-other-defuns)) | |
1a2b6c52 | 1616 | |
896546cd RS |
1617 | (provide 'pascal) |
1618 | ||
86ac52df | 1619 | ;; arch-tag: 04535136-fd93-40b4-a505-c9bebdc051f5 |
da4ce263 | 1620 | ;;; pascal.el ends here |