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7eabc1be | 1 | ;;; pascal.el --- major mode for editing pascal source in Emacs -*- lexical-binding: t -*- |
1a2b6c52 | 2 | |
ab422c4d | 3 | ;; Copyright (C) 1993-2013 Free Software Foundation, Inc. |
1a2b6c52 | 4 | |
9f92e5d9 | 5 | ;; Author: Espen Skoglund <esk@gnu.org> |
be010748 | 6 | ;; Keywords: languages |
1a2b6c52 | 7 | |
be010748 | 8 | ;; This file is part of GNU Emacs. |
1a2b6c52 | 9 | |
b1fc2b50 | 10 | ;; GNU Emacs is free software: you can redistribute it and/or modify |
be010748 | 11 | ;; it under the terms of the GNU General Public License as published by |
b1fc2b50 GM |
12 | ;; the Free Software Foundation, either version 3 of the License, or |
13 | ;; (at your option) any later version. | |
1a2b6c52 | 14 | |
e451cded | 15 | ;; GNU Emacs is distributed in the hope that it will be useful, |
be010748 RS |
16 | ;; but WITHOUT ANY WARRANTY; without even the implied warranty of |
17 | ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
18 | ;; GNU General Public License for more details. | |
1a2b6c52 | 19 | |
be010748 | 20 | ;; You should have received a copy of the GNU General Public License |
b1fc2b50 | 21 | ;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. |
1a2b6c52 RS |
22 | |
23 | ;;; Commentary: | |
24 | ||
b578f267 EN |
25 | ;; USAGE |
26 | ;; ===== | |
da4ce263 | 27 | |
b578f267 EN |
28 | ;; Emacs should enter Pascal mode when you find a Pascal source file. |
29 | ;; When you have entered Pascal mode, you may get more info by pressing | |
30 | ;; C-h m. You may also get online help describing various functions by: | |
31 | ;; C-h f <Name of function you want described> | |
da4ce263 | 32 | |
b578f267 EN |
33 | ;; If you want to customize Pascal mode to fit you better, you may add |
34 | ;; these lines (the values of the variables presented here are the defaults): | |
35 | ;; | |
36 | ;; ;; User customization for Pascal mode | |
37 | ;; (setq pascal-indent-level 3 | |
38 | ;; pascal-case-indent 2 | |
39 | ;; pascal-auto-newline nil | |
40 | ;; pascal-tab-always-indent t | |
41 | ;; pascal-auto-endcomments t | |
42 | ;; pascal-auto-lineup '(all) | |
a1506d29 | 43 | ;; pascal-type-keywords '("array" "file" "packed" "char" |
f80235e3 | 44 | ;; "integer" "real" "string" "record") |
b578f267 | 45 | ;; pascal-start-keywords '("begin" "end" "function" "procedure" |
f80235e3 RS |
46 | ;; "repeat" "until" "while" "read" "readln" |
47 | ;; "reset" "rewrite" "write" "writeln") | |
b578f267 | 48 | ;; pascal-separator-keywords '("downto" "else" "mod" "div" "then")) |
1a2b6c52 | 49 | |
b578f267 EN |
50 | ;; KNOWN BUGS / BUGREPORTS |
51 | ;; ======================= | |
52 | ;; As far as I know, there are no bugs in the current version of this | |
53 | ;; package. This may not be true however, since I never use this mode | |
54 | ;; myself and therefore would never notice them anyway. If you do | |
9f92e5d9 GM |
55 | ;; find any bugs, you may submit them to: esk@gnu.org as well as to |
56 | ;; bug-gnu-emacs@gnu.org. | |
da4ce263 RS |
57 | \f |
58 | ;;; Code: | |
1a2b6c52 | 59 | |
3bb8691b | 60 | |
f0cca206 | 61 | (defgroup pascal nil |
abefd511 | 62 | "Major mode for editing Pascal source in Emacs." |
8ec3bce0 | 63 | :link '(custom-group-link :tag "Font Lock Faces group" font-lock-faces) |
f0cca206 RS |
64 | :group 'languages) |
65 | ||
1a2b6c52 RS |
66 | (defvar pascal-mode-abbrev-table nil |
67 | "Abbrev table in use in Pascal-mode buffers.") | |
68 | (define-abbrev-table 'pascal-mode-abbrev-table ()) | |
69 | ||
86ac52df SM |
70 | (defvar pascal-mode-map |
71 | (let ((map (make-sparse-keymap))) | |
72 | (define-key map ";" 'electric-pascal-semi-or-dot) | |
73 | (define-key map "." 'electric-pascal-semi-or-dot) | |
74 | (define-key map ":" 'electric-pascal-colon) | |
75 | (define-key map "=" 'electric-pascal-equal) | |
76 | (define-key map "#" 'electric-pascal-hash) | |
7eabc1be SM |
77 | ;; These are user preferences, so not to set by default. |
78 | ;;(define-key map "\r" 'electric-pascal-terminate-line) | |
79 | ;;(define-key map "\t" 'electric-pascal-tab) | |
bcd70d97 SM |
80 | (define-key map "\M-\t" 'completion-at-point) |
81 | (define-key map "\M-?" 'completion-help-at-point) | |
86ac52df SM |
82 | (define-key map "\177" 'backward-delete-char-untabify) |
83 | (define-key map "\M-\C-h" 'pascal-mark-defun) | |
84 | (define-key map "\C-c\C-b" 'pascal-insert-block) | |
85 | (define-key map "\M-*" 'pascal-star-comment) | |
86 | (define-key map "\C-c\C-c" 'pascal-comment-area) | |
87 | (define-key map "\C-c\C-u" 'pascal-uncomment-area) | |
88 | (define-key map "\M-\C-a" 'pascal-beg-of-defun) | |
89 | (define-key map "\M-\C-e" 'pascal-end-of-defun) | |
90 | (define-key map "\C-c\C-d" 'pascal-goto-defun) | |
91 | (define-key map "\C-c\C-o" 'pascal-outline-mode) | |
92 | ;; A command to change the whole buffer won't be used terribly | |
93 | ;; often, so no need for a key binding. | |
94 | ;; (define-key map "\C-cd" 'pascal-downcase-keywords) | |
95 | ;; (define-key map "\C-cu" 'pascal-upcase-keywords) | |
96 | ;; (define-key map "\C-cc" 'pascal-capitalize-keywords) | |
97 | map) | |
1a2b6c52 | 98 | "Keymap used in Pascal mode.") |
69b354eb RS |
99 | |
100 | (defvar pascal-imenu-generic-expression | |
099175be | 101 | '((nil "^[ \t]*\\(function\\|procedure\\)[ \t\n]+\\([a-zA-Z0-9_.:]+\\)" 2)) |
69b354eb | 102 | "Imenu expression for Pascal-mode. See `imenu-generic-expression'.") |
e936de0b | 103 | |
da4ce263 | 104 | (defvar pascal-keywords |
a1506d29 JB |
105 | '("and" "array" "begin" "case" "const" "div" "do" "downto" "else" "end" |
106 | "file" "for" "function" "goto" "if" "in" "label" "mod" "nil" "not" "of" | |
107 | "or" "packed" "procedure" "program" "record" "repeat" "set" "then" "to" | |
da4ce263 RS |
108 | "type" "until" "var" "while" "with" |
109 | ;; The following are not standard in pascal, but widely used. | |
110 | "get" "put" "input" "output" "read" "readln" "reset" "rewrite" "write" | |
111 | "writeln")) | |
112 | ||
113 | ;;; | |
114 | ;;; Regular expressions used to calculate indent, etc. | |
115 | ;;; | |
116 | (defconst pascal-symbol-re "\\<[a-zA-Z_][a-zA-Z_0-9.]*\\>") | |
117 | (defconst pascal-beg-block-re "\\<\\(begin\\|case\\|record\\|repeat\\)\\>") | |
118 | (defconst pascal-end-block-re "\\<\\(end\\|until\\)\\>") | |
119 | (defconst pascal-declaration-re "\\<\\(const\\|label\\|type\\|var\\)\\>") | |
27b53c17 | 120 | (defconst pascal-progbeg-re "\\<\\program\\>") |
da4ce263 | 121 | (defconst pascal-defun-re "\\<\\(function\\|procedure\\|program\\)\\>") |
7e0dd87e | 122 | (defconst pascal-sub-block-re "\\<\\(if\\|else\\|for\\|while\\|with\\)\\>") |
f6807db3 | 123 | (defconst pascal-noindent-re "\\<\\(begin\\|end\\|until\\|else\\)\\>") |
da4ce263 RS |
124 | (defconst pascal-nosemi-re "\\<\\(begin\\|repeat\\|then\\|do\\|else\\)\\>") |
125 | (defconst pascal-autoindent-lines-re | |
126 | "\\<\\(label\\|var\\|type\\|const\\|until\\|end\\|begin\\|repeat\\|else\\)\\>") | |
127 | ||
128 | ;;; Strings used to mark beginning and end of excluded text | |
129 | (defconst pascal-exclude-str-start "{-----\\/----- EXCLUDED -----\\/-----") | |
130 | (defconst pascal-exclude-str-end " -----/\\----- EXCLUDED -----/\\-----}") | |
1a2b6c52 | 131 | |
86ac52df SM |
132 | (defvar pascal-mode-syntax-table |
133 | (let ((st (make-syntax-table))) | |
134 | (modify-syntax-entry ?\\ "." st) | |
135 | (modify-syntax-entry ?\( "()1" st) | |
136 | (modify-syntax-entry ?\) ")(4" st) | |
137 | ;; This used to use comment-syntax `b'. But the only document I could | |
138 | ;; find about the syntax of Pascal's comments said that (* ... } is | |
139 | ;; a valid comment, just as { ... *) or (* ... *) or { ... }. | |
140 | (modify-syntax-entry ?* ". 23" st) | |
9ca243c6 SM |
141 | ;; Allow //...\n comments as accepted by Free Pascal (bug#13585). |
142 | (modify-syntax-entry ?/ ". 12c" st) | |
143 | (modify-syntax-entry ?\n "> c" st) | |
86ac52df SM |
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 | |
aa7dab97 SM |
161 | (defconst pascal-font-lock-keywords |
162 | `(("\\_<\\(function\\|pro\\(cedure\\|gram\\)\\)[ \t]+\\([[:alpha:]][[:alnum:]_]*\\)" | |
163 | (1 font-lock-keyword-face) | |
164 | (3 font-lock-function-name-face)) | |
165 | ;; ("type" "const" "real" "integer" "char" "boolean" "var" | |
166 | ;; "record" "array" "file") | |
167 | (,(concat "\\<\\(array\\|boolean\\|c\\(har\\|onst\\)\\|file\\|" | |
168 | "integer\\|re\\(al\\|cord\\)\\|type\\|var\\)\\>") | |
169 | font-lock-type-face) | |
170 | ("\\<\\(label\\|external\\|forward\\)\\>" . font-lock-constant-face) | |
171 | ("\\<\\([0-9]+\\)[ \t]*:" 1 font-lock-function-name-face) | |
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 | 179 | 1 font-lock-keyword-face) |
aa7dab97 SM |
180 | ("\\<\\(goto\\)\\>[ \t]*\\([0-9]+\\)?" |
181 | 2 font-lock-keyword-face t)) | |
210cf16d | 182 | "Additional expressions to highlight in Pascal mode.") |
aa7dab97 SM |
183 | |
184 | (defconst pascal--syntax-propertize | |
185 | (syntax-propertize-rules | |
186 | ;; The syntax-table settings are too coarse and end up treating /* and (/ | |
187 | ;; as comment starters. Fix it here by removing the "2" from the syntax | |
188 | ;; of the second char of such sequences. | |
189 | ("/\\(\\*\\)" (1 ". 3b")) | |
190 | ("(\\(\\/\\)" (1 (prog1 ". 1c" (forward-char -1) nil))) | |
191 | ;; Pascal uses '' and "" rather than \' and \" to escape quotes. | |
192 | ("''\\|\"\"" (0 (if (save-excursion | |
193 | (nth 3 (syntax-ppss (match-beginning 0)))) | |
194 | (string-to-syntax ".") | |
195 | ;; In case of 3 or more quotes in a row, only advance | |
196 | ;; one quote at a time. | |
197 | (forward-char -1) | |
198 | nil))))) | |
210cf16d | 199 | |
f0cca206 | 200 | (defcustom pascal-indent-level 3 |
fb7ada5f | 201 | "Indentation of Pascal statements with respect to containing block." |
f0cca206 RS |
202 | :type 'integer |
203 | :group 'pascal) | |
204 | ||
205 | (defcustom pascal-case-indent 2 | |
fb7ada5f | 206 | "Indentation for case statements." |
f0cca206 RS |
207 | :type 'integer |
208 | :group 'pascal) | |
209 | ||
210 | (defcustom pascal-auto-newline nil | |
fb7ada5f | 211 | "Non-nil means automatically insert newlines in certain cases. |
f0cca206 RS |
212 | These include after semicolons and after the punctuation mark after an `end'." |
213 | :type 'boolean | |
214 | :group 'pascal) | |
215 | ||
27b53c17 | 216 | (defcustom pascal-indent-nested-functions t |
fb7ada5f | 217 | "Non-nil means nested functions are indented." |
27b53c17 RS |
218 | :type 'boolean |
219 | :group 'pascal) | |
220 | ||
f0cca206 | 221 | (defcustom pascal-tab-always-indent t |
fb7ada5f | 222 | "Non-nil means TAB in Pascal mode should always reindent the current line. |
f0cca206 RS |
223 | If this is nil, TAB inserts a tab if it is at the end of the line |
224 | and follows non-whitespace text." | |
225 | :type 'boolean | |
226 | :group 'pascal) | |
227 | ||
228 | (defcustom pascal-auto-endcomments t | |
fb7ada5f | 229 | "Non-nil means automatically insert comments after certain `end's. |
f0cca206 RS |
230 | Specifically, this is done after the ends of cases statements and functions. |
231 | The name of the function or case is included between the braces." | |
232 | :type 'boolean | |
233 | :group 'pascal) | |
234 | ||
235 | (defcustom pascal-auto-lineup '(all) | |
fb7ada5f | 236 | "List of contexts where auto lineup of :'s or ='s should be done. |
3a3ee445 RS |
237 | Elements can be of type: 'paramlist', 'declaration' or 'case', which will |
238 | do auto lineup in parameterlist, declarations or case-statements | |
3672149f | 239 | respectively. The word 'all' will do all lineups. '(case paramlist) for |
3a3ee445 | 240 | instance will do lineup in case-statements and parameterlist, while '(all) |
f0cca206 | 241 | will do all lineups." |
27b53c17 RS |
242 | :type '(set :extra-offset 8 |
243 | (const :tag "Everything" all) | |
244 | (const :tag "Parameter lists" paramlist) | |
dbdb7031 | 245 | (const :tag "Declarations" declaration) |
27b53c17 | 246 | (const :tag "Case statements" case)) |
f0cca206 RS |
247 | :group 'pascal) |
248 | ||
bcd70d97 | 249 | (defvar pascal-toggle-completions nil |
f1a4e679 CY |
250 | "If non-nil, `pascal-complete-word' tries all possible completions. |
251 | Repeated use of \\[pascal-complete-word] then shows all | |
252 | completions in turn, instead of displaying a list of all possible | |
253 | completions.") | |
bcd70d97 SM |
254 | (make-obsolete-variable 'pascal-toggle-completions |
255 | 'completion-cycle-threshold "24.1") | |
3a3ee445 | 256 | |
f0cca206 | 257 | (defcustom pascal-type-keywords |
da4ce263 | 258 | '("array" "file" "packed" "char" "integer" "real" "string" "record") |
fb7ada5f | 259 | "Keywords for types used when completing a word in a declaration or parmlist. |
f0cca206 RS |
260 | These include integer, real, char, etc. |
261 | The types defined within the Pascal program | |
262 | are handled in another way, and should not be added to this list." | |
263 | :type '(repeat (string :tag "Keyword")) | |
264 | :group 'pascal) | |
3a3ee445 | 265 | |
f0cca206 | 266 | (defcustom pascal-start-keywords |
da4ce263 RS |
267 | '("begin" "end" "function" "procedure" "repeat" "until" "while" |
268 | "read" "readln" "reset" "rewrite" "write" "writeln") | |
fb7ada5f | 269 | "Keywords to complete when standing at the first word of a statement. |
f0cca206 | 270 | These are keywords such as begin, repeat, until, readln. |
da4ce263 | 271 | The procedures and variables defined within the Pascal program |
3090ac12 | 272 | are handled in another way, and should not be added to this list." |
f0cca206 RS |
273 | :type '(repeat (string :tag "Keyword")) |
274 | :group 'pascal) | |
3a3ee445 | 275 | |
f0cca206 | 276 | (defcustom pascal-separator-keywords |
da4ce263 | 277 | '("downto" "else" "mod" "div" "then") |
fb7ada5f | 278 | "Keywords to complete when NOT standing at the first word of a statement. |
f0cca206 RS |
279 | These are keywords such as downto, else, mod, then. |
280 | Variables and function names defined within the Pascal program | |
281 | are handled in another way, and should not be added to this list." | |
282 | :type '(repeat (string :tag "Keyword")) | |
283 | :group 'pascal) | |
284 | ||
da4ce263 RS |
285 | |
286 | ;;; | |
287 | ;;; Macros | |
288 | ;;; | |
289 | ||
da4ce263 RS |
290 | (defun pascal-declaration-end () |
291 | (let ((nest 1)) | |
292 | (while (and (> nest 0) | |
a1506d29 JB |
293 | (re-search-forward |
294 | "[:=]\\|\\(\\<record\\>\\)\\|\\(\\<end\\>\\)" | |
3ba6b2ee | 295 | (point-at-eol 2) t)) |
da4ce263 | 296 | (cond ((match-beginning 1) (setq nest (1+ nest))) |
2e952aac RS |
297 | ((match-beginning 2) (setq nest (1- nest))) |
298 | ((looking-at "[^(\n]+)") (setq nest 0)))))) | |
da4ce263 | 299 | |
3a3ee445 | 300 | |
da4ce263 RS |
301 | (defun pascal-declaration-beg () |
302 | (let ((nest 1)) | |
303 | (while (and (> nest 0) | |
3ba6b2ee | 304 | (re-search-backward "[:=]\\|\\<\\(type\\|var\\|label\\|const\\)\\>\\|\\(\\<record\\>\\)\\|\\(\\<end\\>\\)" (point-at-bol 0) t)) |
da4ce263 RS |
305 | (cond ((match-beginning 1) (setq nest 0)) |
306 | ((match-beginning 2) (setq nest (1- nest))) | |
307 | ((match-beginning 3) (setq nest (1+ nest))))) | |
308 | (= nest 0))) | |
3a3ee445 | 309 | |
a1506d29 | 310 | |
da4ce263 | 311 | (defsubst pascal-within-string () |
3ba6b2ee | 312 | (nth 3 (parse-partial-sexp (point-at-bol) (point)))) |
da4ce263 | 313 | |
1a2b6c52 RS |
314 | |
315 | ;;;###autoload | |
3672149f | 316 | (define-derived-mode pascal-mode prog-mode "Pascal" |
da4ce263 RS |
317 | "Major mode for editing Pascal code. \\<pascal-mode-map> |
318 | TAB indents for Pascal code. Delete converts tabs to spaces as it moves back. | |
319 | ||
bcd70d97 | 320 | \\[completion-at-point] completes the word around current point with respect \ |
da4ce263 | 321 | to position in code |
bcd70d97 | 322 | \\[completion-help-at-point] shows all possible completions at this point. |
da4ce263 RS |
323 | |
324 | Other useful functions are: | |
325 | ||
326 | \\[pascal-mark-defun]\t- Mark function. | |
327 | \\[pascal-insert-block]\t- insert begin ... end; | |
328 | \\[pascal-star-comment]\t- insert (* ... *) | |
329 | \\[pascal-comment-area]\t- Put marked area in a comment, fixing nested comments. | |
330 | \\[pascal-uncomment-area]\t- Uncomment an area commented with \ | |
331 | \\[pascal-comment-area]. | |
332 | \\[pascal-beg-of-defun]\t- Move to beginning of current function. | |
333 | \\[pascal-end-of-defun]\t- Move to end of current function. | |
334 | \\[pascal-goto-defun]\t- Goto function prompted for in the minibuffer. | |
86ac52df | 335 | \\[pascal-outline-mode]\t- Enter `pascal-outline-mode'. |
da4ce263 RS |
336 | |
337 | Variables controlling indentation/edit style: | |
338 | ||
3672149f | 339 | `pascal-indent-level' (default 3) |
da4ce263 | 340 | Indentation of Pascal statements with respect to containing block. |
3672149f | 341 | `pascal-case-indent' (default 2) |
da4ce263 | 342 | Indentation for case statements. |
3672149f | 343 | `pascal-auto-newline' (default nil) |
4a6fd75f KH |
344 | Non-nil means automatically newline after semicolons and the punctuation |
345 | mark after an end. | |
3672149f | 346 | `pascal-indent-nested-functions' (default t) |
27b53c17 | 347 | Non-nil means nested functions are indented. |
3672149f | 348 | `pascal-tab-always-indent' (default t) |
1a2b6c52 RS |
349 | Non-nil means TAB in Pascal mode should always reindent the current line, |
350 | regardless of where in the line point is when the TAB command is used. | |
3672149f | 351 | `pascal-auto-endcomments' (default t) |
da4ce263 RS |
352 | Non-nil means a comment { ... } is set after the ends which ends cases and |
353 | functions. The name of the function or case will be set between the braces. | |
3672149f | 354 | `pascal-auto-lineup' (default t) |
e936de0b | 355 | List of contexts where auto lineup of :'s or ='s should be done. |
da4ce263 | 356 | |
3672149f SM |
357 | See also the user variables `pascal-type-keywords', `pascal-start-keywords' and |
358 | `pascal-separator-keywords'. | |
1a2b6c52 RS |
359 | |
360 | Turning on Pascal mode calls the value of the variable pascal-mode-hook with | |
361 | no args, if that value is non-nil." | |
aa7dab97 SM |
362 | (setq-local local-abbrev-table pascal-mode-abbrev-table) |
363 | (setq-local indent-line-function 'pascal-indent-line) | |
364 | (setq-local comment-indent-function 'pascal-indent-comment) | |
365 | (setq-local parse-sexp-ignore-comments nil) | |
366 | (setq-local blink-matching-paren-dont-ignore-comments t) | |
367 | (setq-local case-fold-search t) | |
368 | (setq-local comment-start "{") | |
369 | (setq-local comment-start-skip "(\\*+ *\\|{ *") | |
370 | (setq-local comment-end "}") | |
bcd70d97 | 371 | (add-hook 'completion-at-point-functions 'pascal-completions-at-point nil t) |
69b354eb | 372 | ;; Font lock support |
aa7dab97 SM |
373 | (setq-local font-lock-defaults '(pascal-font-lock-keywords nil t)) |
374 | (setq-local syntax-propertize-function pascal--syntax-propertize) | |
69b354eb | 375 | ;; Imenu support |
aa7dab97 SM |
376 | (setq-local imenu-generic-expression pascal-imenu-generic-expression) |
377 | (setq-local imenu-case-fold-search t) | |
3672149f SM |
378 | ;; Pascal-mode's own hide/show support. |
379 | (add-to-invisibility-spec '(pascal . t))) | |
1a2b6c52 | 380 | |
da4ce263 RS |
381 | \f |
382 | ||
1a2b6c52 RS |
383 | ;;; |
384 | ;;; Electric functions | |
385 | ;;; | |
1a2b6c52 RS |
386 | (defun electric-pascal-terminate-line () |
387 | "Terminate line and indent next line." | |
388 | (interactive) | |
da4ce263 | 389 | ;; First, check if current line should be indented |
1a2b6c52 RS |
390 | (save-excursion |
391 | (beginning-of-line) | |
392 | (skip-chars-forward " \t") | |
da4ce263 | 393 | (if (looking-at pascal-autoindent-lines-re) |
1a2b6c52 | 394 | (pascal-indent-line))) |
da4ce263 | 395 | (delete-horizontal-space) ; Removes trailing whitespaces |
1a2b6c52 | 396 | (newline) |
da4ce263 | 397 | ;; Indent next line |
1a2b6c52 RS |
398 | (pascal-indent-line) |
399 | ;; Maybe we should set some endcomments | |
400 | (if pascal-auto-endcomments | |
401 | (pascal-set-auto-comments)) | |
402 | ;; Check if we shall indent inside comment | |
403 | (let ((setstar nil)) | |
404 | (save-excursion | |
405 | (forward-line -1) | |
406 | (skip-chars-forward " \t") | |
da4ce263 | 407 | (cond ((looking-at "\\*[ \t]+)") |
1a2b6c52 RS |
408 | ;; Delete region between `*' and `)' if there is only whitespaces. |
409 | (forward-char 1) | |
da4ce263 | 410 | (delete-horizontal-space)) |
1a2b6c52 | 411 | ((and (looking-at "(\\*\\|\\*[^)]") |
3ba6b2ee | 412 | (not (save-excursion (search-forward "*)" (point-at-eol) t)))) |
1a2b6c52 RS |
413 | (setq setstar t)))) |
414 | ;; If last line was a star comment line then this one shall be too. | |
a1506d29 | 415 | (if (null setstar) |
da4ce263 RS |
416 | (pascal-indent-line) |
417 | (insert "* ")))) | |
1a2b6c52 | 418 | |
1a2b6c52 | 419 | |
da4ce263 RS |
420 | (defun electric-pascal-semi-or-dot () |
421 | "Insert `;' or `.' character and reindent the line." | |
1a2b6c52 | 422 | (interactive) |
1ba983e8 | 423 | (insert last-command-event) |
1a2b6c52 RS |
424 | (save-excursion |
425 | (beginning-of-line) | |
426 | (pascal-indent-line)) | |
427 | (if pascal-auto-newline | |
428 | (electric-pascal-terminate-line))) | |
429 | ||
430 | (defun electric-pascal-colon () | |
53964682 | 431 | "Insert `:' and do all indentations except line indent on this line." |
1a2b6c52 | 432 | (interactive) |
1ba983e8 | 433 | (insert last-command-event) |
da4ce263 RS |
434 | ;; Do nothing if within string. |
435 | (if (pascal-within-string) | |
436 | () | |
437 | (save-excursion | |
438 | (beginning-of-line) | |
439 | (pascal-indent-line)) | |
440 | (let ((pascal-tab-always-indent nil)) | |
441 | (pascal-indent-command)))) | |
442 | ||
1a2b6c52 | 443 | (defun electric-pascal-equal () |
cd1181db | 444 | "Insert `=', and do indentation if within type declaration." |
1a2b6c52 | 445 | (interactive) |
1ba983e8 | 446 | (insert last-command-event) |
da4ce263 | 447 | (if (eq (car (pascal-calculate-indent)) 'declaration) |
1a2b6c52 RS |
448 | (let ((pascal-tab-always-indent nil)) |
449 | (pascal-indent-command)))) | |
450 | ||
9f51be89 | 451 | (defun electric-pascal-hash () |
4a6fd75f | 452 | "Insert `#', and indent to column 0 if this is a CPP directive." |
9f51be89 | 453 | (interactive) |
1ba983e8 | 454 | (insert last-command-event) |
9f51be89 RS |
455 | (if (save-excursion (beginning-of-line) (looking-at "^[ \t]*#")) |
456 | (save-excursion (beginning-of-line) | |
457 | (delete-horizontal-space)))) | |
458 | ||
1a2b6c52 | 459 | (defun electric-pascal-tab () |
da4ce263 | 460 | "Function called when TAB is pressed in Pascal mode." |
1a2b6c52 | 461 | (interactive) |
9f51be89 RS |
462 | ;; Do nothing if within a string or in a CPP directive. |
463 | (if (or (pascal-within-string) | |
464 | (and (not (bolp)) | |
465 | (save-excursion (beginning-of-line) (eq (following-char) ?#)))) | |
da4ce263 RS |
466 | (insert "\t") |
467 | ;; If pascal-tab-always-indent, indent the beginning of the line. | |
468 | (if pascal-tab-always-indent | |
469 | (save-excursion | |
470 | (beginning-of-line) | |
471 | (pascal-indent-line)) | |
2e952aac RS |
472 | (if (save-excursion |
473 | (skip-chars-backward " \t") | |
474 | (bolp)) | |
475 | (pascal-indent-line) | |
476 | (insert "\t"))) | |
da4ce263 RS |
477 | (pascal-indent-command))) |
478 | ||
479 | \f | |
1a2b6c52 RS |
480 | |
481 | ;;; | |
482 | ;;; Interactive functions | |
483 | ;;; | |
b3608390 CY |
484 | (defvar pascal--extra-indent 0) |
485 | ||
1a2b6c52 | 486 | (defun pascal-insert-block () |
da4ce263 | 487 | "Insert Pascal begin ... end; block in the code with right indentation." |
1a2b6c52 | 488 | (interactive) |
1a2b6c52 RS |
489 | (insert "begin") |
490 | (electric-pascal-terminate-line) | |
491 | (save-excursion | |
6acae80a | 492 | (newline) |
1a2b6c52 RS |
493 | (insert "end;") |
494 | (beginning-of-line) | |
495 | (pascal-indent-line))) | |
496 | ||
497 | (defun pascal-star-comment () | |
da4ce263 | 498 | "Insert Pascal star comment at point." |
1a2b6c52 RS |
499 | (interactive) |
500 | (pascal-indent-line) | |
501 | (insert "(*") | |
502 | (electric-pascal-terminate-line) | |
503 | (save-excursion | |
504 | (electric-pascal-terminate-line) | |
da4ce263 RS |
505 | (delete-horizontal-space) |
506 | (insert ")")) | |
507 | (insert " ")) | |
1a2b6c52 | 508 | |
da4ce263 | 509 | (defun pascal-mark-defun () |
1a2b6c52 | 510 | "Mark the current pascal function (or procedure). |
da4ce263 | 511 | This puts the mark at the end, and point at the beginning." |
1a2b6c52 RS |
512 | (interactive) |
513 | (push-mark (point)) | |
da4ce263 | 514 | (pascal-end-of-defun) |
1a2b6c52 | 515 | (push-mark (point)) |
da4ce263 | 516 | (pascal-beg-of-defun) |
a445370f DN |
517 | (when (featurep 'xemacs) |
518 | (zmacs-activate-region))) | |
1a2b6c52 RS |
519 | |
520 | (defun pascal-comment-area (start end) | |
da4ce263 RS |
521 | "Put the region into a Pascal comment. |
522 | The comments that are in this area are \"deformed\": | |
523 | `*)' becomes `!(*' and `}' becomes `!{'. | |
524 | These deformed comments are returned to normal if you use | |
525 | \\[pascal-uncomment-area] to undo the commenting. | |
526 | ||
527 | The commented area starts with `pascal-exclude-str-start', and ends with | |
528 | `pascal-include-str-end'. But if you change these variables, | |
529 | \\[pascal-uncomment-area] won't recognize the comments." | |
1a2b6c52 RS |
530 | (interactive "r") |
531 | (save-excursion | |
532 | ;; Insert start and endcomments | |
533 | (goto-char end) | |
534 | (if (and (save-excursion (skip-chars-forward " \t") (eolp)) | |
535 | (not (save-excursion (skip-chars-backward " \t") (bolp)))) | |
536 | (forward-line 1) | |
537 | (beginning-of-line)) | |
da4ce263 | 538 | (insert pascal-exclude-str-end) |
1a2b6c52 RS |
539 | (setq end (point)) |
540 | (newline) | |
541 | (goto-char start) | |
542 | (beginning-of-line) | |
da4ce263 | 543 | (insert pascal-exclude-str-start) |
1a2b6c52 RS |
544 | (newline) |
545 | ;; Replace end-comments within commented area | |
546 | (goto-char end) | |
547 | (save-excursion | |
548 | (while (re-search-backward "\\*)" start t) | |
549 | (replace-match "!(*" t t))) | |
550 | (save-excursion | |
551 | (while (re-search-backward "}" start t) | |
552 | (replace-match "!{" t t))))) | |
553 | ||
554 | (defun pascal-uncomment-area () | |
da4ce263 RS |
555 | "Uncomment a commented area; change deformed comments back to normal. |
556 | This command does nothing if the pointer is not in a commented | |
1a2b6c52 RS |
557 | area. See also `pascal-comment-area'." |
558 | (interactive) | |
559 | (save-excursion | |
560 | (let ((start (point)) | |
561 | (end (point))) | |
562 | ;; Find the boundaries of the comment | |
563 | (save-excursion | |
da4ce263 | 564 | (setq start (progn (search-backward pascal-exclude-str-start nil t) |
1a2b6c52 | 565 | (point))) |
da4ce263 | 566 | (setq end (progn (search-forward pascal-exclude-str-end nil t) |
1a2b6c52 RS |
567 | (point)))) |
568 | ;; Check if we're really inside a comment | |
569 | (if (or (equal start (point)) (<= end (point))) | |
570 | (message "Not standing within commented area.") | |
571 | (progn | |
572 | ;; Remove endcomment | |
573 | (goto-char end) | |
574 | (beginning-of-line) | |
575 | (let ((pos (point))) | |
576 | (end-of-line) | |
577 | (delete-region pos (1+ (point)))) | |
578 | ;; Change comments back to normal | |
579 | (save-excursion | |
580 | (while (re-search-backward "!{" start t) | |
581 | (replace-match "}" t t))) | |
582 | (save-excursion | |
583 | (while (re-search-backward "!(\\*" start t) | |
584 | (replace-match "*)" t t))) | |
585 | ;; Remove startcomment | |
586 | (goto-char start) | |
587 | (beginning-of-line) | |
588 | (let ((pos (point))) | |
589 | (end-of-line) | |
590 | (delete-region pos (1+ (point))))))))) | |
591 | ||
da4ce263 RS |
592 | (defun pascal-beg-of-defun () |
593 | "Move backward to the beginning of the current function or procedure." | |
1a2b6c52 | 594 | (interactive) |
da4ce263 RS |
595 | (catch 'found |
596 | (if (not (looking-at (concat "\\s \\|\\s)\\|" pascal-defun-re))) | |
597 | (forward-sexp 1)) | |
598 | (let ((nest 0) (max -1) (func 0) | |
a1506d29 | 599 | (reg (concat pascal-beg-block-re "\\|" |
da4ce263 RS |
600 | pascal-end-block-re "\\|" |
601 | pascal-defun-re))) | |
602 | (while (re-search-backward reg nil 'move) | |
603 | (cond ((let ((state (save-excursion | |
604 | (parse-partial-sexp (point-min) (point))))) | |
605 | (or (nth 3 state) (nth 4 state))) ; Inside string or comment | |
606 | ()) | |
607 | ((match-end 1) ; begin|case|record|repeat | |
608 | (if (and (looking-at "\\<record\\>") (>= max 0)) | |
609 | (setq func (1- func))) | |
610 | (setq nest (1+ nest) | |
611 | max (max nest max))) | |
612 | ((match-end 2) ; end|until | |
613 | (if (and (= nest max) (>= max 0)) | |
614 | (setq func (1+ func))) | |
615 | (setq nest (1- nest))) | |
616 | ((match-end 3) ; function|procedure | |
27b53c17 | 617 | (if (= 0 func) |
da4ce263 RS |
618 | (throw 'found t) |
619 | (setq func (1- func))))))) | |
620 | nil)) | |
621 | ||
622 | (defun pascal-end-of-defun () | |
623 | "Move forward to the end of the current function or procedure." | |
1a2b6c52 | 624 | (interactive) |
da4ce263 RS |
625 | (if (looking-at "\\s ") |
626 | (forward-sexp 1)) | |
627 | (if (not (looking-at pascal-defun-re)) | |
628 | (pascal-beg-of-defun)) | |
629 | (forward-char 1) | |
630 | (let ((nest 0) (func 1) | |
a1506d29 | 631 | (reg (concat pascal-beg-block-re "\\|" |
da4ce263 RS |
632 | pascal-end-block-re "\\|" |
633 | pascal-defun-re))) | |
634 | (while (and (/= func 0) | |
635 | (re-search-forward reg nil 'move)) | |
636 | (cond ((let ((state (save-excursion | |
637 | (parse-partial-sexp (point-min) (point))))) | |
638 | (or (nth 3 state) (nth 4 state))) ; Inside string or comment | |
639 | ()) | |
640 | ((match-end 1) | |
641 | (setq nest (1+ nest)) | |
642 | (if (save-excursion | |
643 | (goto-char (match-beginning 0)) | |
644 | (looking-at "\\<record\\>")) | |
645 | (setq func (1+ func)))) | |
646 | ((match-end 2) | |
647 | (setq nest (1- nest)) | |
648 | (if (= nest 0) | |
649 | (setq func (1- func)))) | |
650 | ((match-end 3) | |
651 | (setq func (1+ func)))))) | |
652 | (forward-line 1)) | |
1a2b6c52 | 653 | |
3a3ee445 RS |
654 | (defun pascal-end-of-statement () |
655 | "Move forward to end of current statement." | |
656 | (interactive) | |
a0bd2457 RS |
657 | (let ((parse-sexp-ignore-comments t) |
658 | (nest 0) pos | |
3a3ee445 RS |
659 | (regexp (concat "\\(" pascal-beg-block-re "\\)\\|\\(" |
660 | pascal-end-block-re "\\)"))) | |
661 | (if (not (looking-at "[ \t\n]")) (forward-sexp -1)) | |
662 | (or (looking-at pascal-beg-block-re) | |
663 | ;; Skip to end of statement | |
664 | (setq pos (catch 'found | |
665 | (while t | |
666 | (forward-sexp 1) | |
667 | (cond ((looking-at "[ \t]*;") | |
668 | (skip-chars-forward "^;") | |
669 | (forward-char 1) | |
670 | (throw 'found (point))) | |
671 | ((save-excursion | |
672 | (forward-sexp -1) | |
673 | (looking-at pascal-beg-block-re)) | |
674 | (goto-char (match-beginning 0)) | |
675 | (throw 'found nil)) | |
676 | ((eobp) | |
677 | (throw 'found (point)))))))) | |
678 | (if (not pos) | |
679 | ;; Skip a whole block | |
680 | (catch 'found | |
681 | (while t | |
682 | (re-search-forward regexp nil 'move) | |
a1506d29 | 683 | (setq nest (if (match-end 1) |
3a3ee445 RS |
684 | (1+ nest) |
685 | (1- nest))) | |
686 | (cond ((eobp) | |
687 | (throw 'found (point))) | |
688 | ((= 0 nest) | |
689 | (throw 'found (pascal-end-of-statement)))))) | |
690 | pos))) | |
691 | ||
1a2b6c52 | 692 | (defun pascal-downcase-keywords () |
da4ce263 | 693 | "Downcase all Pascal keywords in the buffer." |
1a2b6c52 RS |
694 | (interactive) |
695 | (pascal-change-keywords 'downcase-word)) | |
696 | ||
697 | (defun pascal-upcase-keywords () | |
da4ce263 | 698 | "Upcase all Pascal keywords in the buffer." |
1a2b6c52 RS |
699 | (interactive) |
700 | (pascal-change-keywords 'upcase-word)) | |
701 | ||
702 | (defun pascal-capitalize-keywords () | |
da4ce263 | 703 | "Capitalize all Pascal keywords in the buffer." |
1a2b6c52 RS |
704 | (interactive) |
705 | (pascal-change-keywords 'capitalize-word)) | |
706 | ||
da4ce263 | 707 | ;; Change the keywords according to argument. |
1a2b6c52 | 708 | (defun pascal-change-keywords (change-word) |
1a2b6c52 | 709 | (save-excursion |
da4ce263 RS |
710 | (let ((keyword-re (concat "\\<\\(" |
711 | (mapconcat 'identity pascal-keywords "\\|") | |
712 | "\\)\\>"))) | |
713 | (goto-char (point-min)) | |
714 | (while (re-search-forward keyword-re nil t) | |
715 | (funcall change-word -1))))) | |
716 | ||
717 | \f | |
1a2b6c52 RS |
718 | |
719 | ;;; | |
720 | ;;; Other functions | |
721 | ;;; | |
1a2b6c52 | 722 | (defun pascal-set-auto-comments () |
da4ce263 RS |
723 | "Insert `{ case }' or `{ NAME }' on this line if appropriate. |
724 | Insert `{ case }' if there is an `end' on the line which | |
725 | ends a case block. Insert `{ NAME }' if there is an `end' | |
726 | on the line which ends a function or procedure named NAME." | |
1a2b6c52 RS |
727 | (save-excursion |
728 | (forward-line -1) | |
729 | (skip-chars-forward " \t") | |
da4ce263 | 730 | (if (and (looking-at "\\<end;") |
1a2b6c52 RS |
731 | (not (save-excursion |
732 | (end-of-line) | |
3ba6b2ee | 733 | (search-backward "{" (point-at-bol) t)))) |
81aca4f4 RS |
734 | (let ((type (car (pascal-calculate-indent)))) |
735 | (if (eq type 'declaration) | |
736 | () | |
737 | (if (eq type 'case) | |
738 | ;; This is a case block | |
739 | (progn | |
740 | (end-of-line) | |
741 | (delete-horizontal-space) | |
742 | (insert " { case }")) | |
743 | (let ((nest 1)) | |
744 | ;; Check if this is the end of a function | |
745 | (save-excursion | |
746 | (while (not (or (looking-at pascal-defun-re) (bobp))) | |
747 | (backward-sexp 1) | |
748 | (cond ((looking-at pascal-beg-block-re) | |
749 | (setq nest (1- nest))) | |
750 | ((looking-at pascal-end-block-re) | |
751 | (setq nest (1+ nest))))) | |
752 | (if (bobp) | |
753 | (setq nest 1))) | |
754 | (if (zerop nest) | |
755 | (progn | |
756 | (end-of-line) | |
757 | (delete-horizontal-space) | |
758 | (insert " { ") | |
759 | (let (b e) | |
760 | (save-excursion | |
761 | (setq b (progn (pascal-beg-of-defun) | |
762 | (skip-chars-forward "^ \t") | |
763 | (skip-chars-forward " \t") | |
764 | (point)) | |
765 | e (progn (skip-chars-forward "a-zA-Z0-9_") | |
766 | (point)))) | |
767 | (insert-buffer-substring (current-buffer) b e)) | |
768 | (insert " }")))))))))) | |
1a2b6c52 | 769 | |
da4ce263 RS |
770 | \f |
771 | ||
1a2b6c52 | 772 | ;;; |
da4ce263 RS |
773 | ;;; Indentation |
774 | ;;; | |
775 | (defconst pascal-indent-alist | |
b3608390 CY |
776 | '((block . (+ pascal--extra-indent pascal-indent-level)) |
777 | (case . (+ pascal--extra-indent pascal-case-indent)) | |
778 | (caseblock . pascal--extra-indent) (cpp . 0) | |
779 | (declaration . (+ pascal--extra-indent pascal-indent-level)) | |
da4ce263 | 780 | (paramlist . (pascal-indent-paramlist t)) |
9f92e5d9 | 781 | (comment . (pascal-indent-comment)) |
b3608390 CY |
782 | (defun . pascal--extra-indent) (contexp . pascal--extra-indent) |
783 | (unknown . pascal--extra-indent) (string . 0) (progbeg . 0))) | |
da4ce263 | 784 | |
1a2b6c52 | 785 | (defun pascal-indent-command () |
da4ce263 RS |
786 | "Indent for special part of code." |
787 | (let* ((indent-str (pascal-calculate-indent)) | |
86ac52df | 788 | (type (car indent-str))) |
3a3ee445 RS |
789 | (cond ((and (eq type 'paramlist) |
790 | (or (memq 'all pascal-auto-lineup) | |
791 | (memq 'paramlist pascal-auto-lineup))) | |
da4ce263 RS |
792 | (pascal-indent-paramlist) |
793 | (pascal-indent-paramlist)) | |
3a3ee445 RS |
794 | ((and (eq type 'declaration) |
795 | (or (memq 'all pascal-auto-lineup) | |
796 | (memq 'declaration pascal-auto-lineup))) | |
da4ce263 | 797 | (pascal-indent-declaration)) |
3a3ee445 RS |
798 | ((and (eq type 'case) (not (looking-at "^[ \t]*$")) |
799 | (or (memq 'all pascal-auto-lineup) | |
800 | (memq 'case pascal-auto-lineup))) | |
da4ce263 RS |
801 | (pascal-indent-case))) |
802 | (if (looking-at "[ \t]+$") | |
803 | (skip-chars-forward " \t")))) | |
1a2b6c52 RS |
804 | |
805 | (defun pascal-indent-line () | |
da4ce263 RS |
806 | "Indent current line as a Pascal statement." |
807 | (let* ((indent-str (pascal-calculate-indent)) | |
808 | (type (car indent-str)) | |
b3608390 | 809 | (pascal--extra-indent (car (cdr indent-str)))) |
27b53c17 RS |
810 | ;; Labels should not be indented. |
811 | (if (and (looking-at "^[0-9a-zA-Z]+[ \t]*:[^=]") | |
812 | (not (eq type 'declaration))) | |
da4ce263 RS |
813 | (search-forward ":" nil t)) |
814 | (delete-horizontal-space) | |
27b53c17 RS |
815 | (cond (; Some things should not be indented |
816 | (or (and (eq type 'declaration) (looking-at pascal-declaration-re)) | |
817 | (eq type 'cpp)) | |
818 | ()) | |
819 | (; Other things should have no extra indent | |
820 | (looking-at pascal-noindent-re) | |
b3608390 | 821 | (indent-to pascal--extra-indent)) |
27b53c17 RS |
822 | (; Nested functions should be indented |
823 | (looking-at pascal-defun-re) | |
824 | (if (and pascal-indent-nested-functions | |
825 | (eq type 'defun)) | |
b3608390 CY |
826 | (indent-to (+ pascal--extra-indent pascal-indent-level)) |
827 | (indent-to pascal--extra-indent))) | |
27b53c17 RS |
828 | (; But most lines are treated this way |
829 | (indent-to (eval (cdr (assoc type pascal-indent-alist)))) | |
830 | )))) | |
da4ce263 RS |
831 | |
832 | (defun pascal-calculate-indent () | |
833 | "Calculate the indent of the current Pascal line. | |
834 | Return a list of two elements: (INDENT-TYPE INDENT-LEVEL)." | |
835 | (save-excursion | |
a0bd2457 RS |
836 | (let* ((parse-sexp-ignore-comments t) |
837 | (oldpos (point)) | |
da4ce263 | 838 | (state (save-excursion (parse-partial-sexp (point-min) (point)))) |
9f51be89 | 839 | (nest 0) (par 0) (complete (looking-at "[ \t]*end\\>")) |
27b53c17 RS |
840 | (elsed (looking-at "[ \t]*else\\>")) (funccnt 0) |
841 | (did-func (looking-at "[ \t]*\\(procedure\\|function\\)\\>")) | |
da4ce263 RS |
842 | (type (catch 'nesting |
843 | ;; Check if inside a string, comment or parenthesis | |
844 | (cond ((nth 3 state) (throw 'nesting 'string)) | |
845 | ((nth 4 state) (throw 'nesting 'comment)) | |
846 | ((> (car state) 0) | |
847 | (goto-char (scan-lists (point) -1 (car state))) | |
9f51be89 RS |
848 | (setq par (1+ (current-column)))) |
849 | ((save-excursion (beginning-of-line) | |
850 | (eq (following-char) ?#)) | |
851 | (throw 'nesting 'cpp))) | |
da4ce263 RS |
852 | ;; Loop until correct indent is found |
853 | (while t | |
854 | (backward-sexp 1) | |
9f51be89 RS |
855 | (cond (;--Escape from case statements |
856 | (and (looking-at "[A-Za-z0-9]+[ \t]*:[^=]") | |
857 | (not complete) | |
858 | (save-excursion (skip-chars-backward " \t") | |
859 | (bolp)) | |
860 | (= (save-excursion | |
861 | (end-of-line) (backward-sexp) (point)) | |
862 | (point)) | |
863 | (> (save-excursion (goto-char oldpos) | |
864 | (beginning-of-line) | |
865 | (point)) | |
866 | (point))) | |
867 | (throw 'nesting 'caseblock)) | |
27b53c17 RS |
868 | (;--Beginning of program |
869 | (looking-at pascal-progbeg-re) | |
870 | (throw 'nesting 'progbeg)) | |
871 | (;--No known statements | |
872 | (bobp) | |
873 | (throw 'nesting 'progbeg)) | |
9f51be89 | 874 | (;--Nest block outwards |
da4ce263 RS |
875 | (looking-at pascal-beg-block-re) |
876 | (if (= nest 0) | |
877 | (cond ((looking-at "case\\>") | |
da4ce263 RS |
878 | (throw 'nesting 'case)) |
879 | ((looking-at "record\\>") | |
880 | (throw 'nesting 'declaration)) | |
f6807db3 | 881 | (t (throw 'nesting 'block))) |
27b53c17 RS |
882 | (if (and (looking-at "record\\>") (= nest 1)) |
883 | (setq funccnt (1- funccnt))) | |
da4ce263 RS |
884 | (setq nest (1- nest)))) |
885 | (;--Nest block inwards | |
886 | (looking-at pascal-end-block-re) | |
f6807db3 RS |
887 | (if (and (looking-at "end\\s ") |
888 | elsed (not complete)) | |
889 | (throw 'nesting 'block)) | |
27b53c17 RS |
890 | (if (= nest 0) |
891 | (setq funccnt (1+ funccnt))) | |
da4ce263 RS |
892 | (setq complete t |
893 | nest (1+ nest))) | |
894 | (;--Defun (or parameter list) | |
27b53c17 RS |
895 | (and (looking-at pascal-defun-re) |
896 | (progn (setq funccnt (1- funccnt) | |
897 | did-func t) | |
898 | (or (bolp) (< funccnt 0)))) | |
899 | ;; Prevent searching whole buffer | |
900 | (if (and (bolp) (>= funccnt 0)) | |
901 | (throw 'nesting 'progbeg)) | |
da4ce263 RS |
902 | (if (= 0 par) |
903 | (throw 'nesting 'defun) | |
904 | (setq par 0) | |
905 | (let ((n 0)) | |
906 | (while (re-search-forward | |
907 | "\\(\\<record\\>\\)\\|\\<end\\>" | |
908 | oldpos t) | |
909 | (if (match-end 1) | |
910 | (setq n (1+ n)) (setq n (1- n)))) | |
911 | (if (> n 0) | |
912 | (throw 'nesting 'declaration) | |
913 | (throw 'nesting 'paramlist))))) | |
914 | (;--Declaration part | |
27b53c17 RS |
915 | (and (looking-at pascal-declaration-re) |
916 | (not did-func) | |
917 | (= funccnt 0)) | |
f6807db3 RS |
918 | (if (save-excursion |
919 | (goto-char oldpos) | |
920 | (forward-line -1) | |
921 | (looking-at "^[ \t]*$")) | |
da4ce263 RS |
922 | (throw 'nesting 'unknown) |
923 | (throw 'nesting 'declaration))) | |
924 | (;--If, else or while statement | |
925 | (and (not complete) | |
926 | (looking-at pascal-sub-block-re)) | |
927 | (throw 'nesting 'block)) | |
928 | (;--Found complete statement | |
929 | (save-excursion (forward-sexp 1) | |
930 | (= (following-char) ?\;)) | |
931 | (setq complete t)) | |
da4ce263 | 932 | ))))) |
9f51be89 | 933 | |
da4ce263 | 934 | ;; Return type of block and indent level. |
a1506d29 | 935 | (if (> par 0) ; Unclosed Parenthesis |
da4ce263 RS |
936 | (list 'contexp par) |
937 | (list type (pascal-indent-level)))))) | |
938 | ||
939 | (defun pascal-indent-level () | |
940 | "Return the indent-level the current statement has. | |
941 | Do not count labels, case-statements or records." | |
1a2b6c52 RS |
942 | (save-excursion |
943 | (beginning-of-line) | |
da4ce263 RS |
944 | (if (looking-at "[ \t]*[0-9a-zA-Z]+[ \t]*:[^=]") |
945 | (search-forward ":" nil t) | |
946 | (if (looking-at ".*=[ \t]*record\\>") | |
947 | (search-forward "=" nil t))) | |
1a2b6c52 RS |
948 | (skip-chars-forward " \t") |
949 | (current-column))) | |
950 | ||
9f92e5d9 GM |
951 | (defun pascal-indent-comment () |
952 | "Return indent for current comment." | |
953 | (save-excursion | |
954 | (re-search-backward "\\((\\*\\)\\|{" nil t) | |
955 | (if (match-beginning 1) | |
956 | (1+ (current-column)) | |
957 | (current-column)))) | |
da4ce263 RS |
958 | |
959 | (defun pascal-indent-case () | |
960 | "Indent within case statements." | |
a0bd2457 RS |
961 | (let ((savepos (point-marker)) |
962 | (end (prog2 | |
81aca4f4 RS |
963 | (end-of-line) |
964 | (point-marker) | |
da4ce263 | 965 | (re-search-backward "\\<case\\>" nil t))) |
86ac52df | 966 | (beg (point)) |
b3608390 | 967 | (pascal--extra-indent 0)) |
da4ce263 | 968 | ;; Get right indent |
f80235e3 | 969 | (while (< (point) end) |
a1506d29 | 970 | (if (re-search-forward |
81aca4f4 RS |
971 | "^[ \t]*[^ \t,:]+[ \t]*\\(,[ \t]*[^ \t,:]+[ \t]*\\)*:" |
972 | (marker-position end) 'move) | |
973 | (forward-char -1)) | |
f80235e3 | 974 | (if (< (point) end) |
2e952aac RS |
975 | (progn |
976 | (delete-horizontal-space) | |
b3608390 CY |
977 | (if (> (current-column) pascal--extra-indent) |
978 | (setq pascal--extra-indent (current-column))) | |
2e952aac | 979 | (pascal-end-of-statement)))) |
da4ce263 RS |
980 | (goto-char beg) |
981 | ;; Indent all case statements | |
f80235e3 | 982 | (while (< (point) end) |
81aca4f4 | 983 | (if (re-search-forward |
9f51be89 | 984 | "^[ \t]*[^][ \t,\\.:]+[ \t]*\\(,[ \t]*[^ \t,:]+[ \t]*\\)*:" |
81aca4f4 | 985 | (marker-position end) 'move) |
da4ce263 | 986 | (forward-char -1)) |
b3608390 | 987 | (indent-to (1+ pascal--extra-indent)) |
da4ce263 RS |
988 | (if (/= (following-char) ?:) |
989 | () | |
990 | (forward-char 1) | |
991 | (delete-horizontal-space) | |
3a3ee445 | 992 | (insert " ")) |
3a3ee445 | 993 | (pascal-end-of-statement)) |
a0bd2457 | 994 | (goto-char savepos))) |
da4ce263 RS |
995 | |
996 | (defun pascal-indent-paramlist (&optional arg) | |
997 | "Indent current line in parameterlist. | |
998 | If optional arg is non-nil, just return the | |
999 | indent of the current line in parameterlist." | |
1a2b6c52 | 1000 | (save-excursion |
da4ce263 RS |
1001 | (let* ((oldpos (point)) |
1002 | (stpos (progn (goto-char (scan-lists (point) -1 1)) (point))) | |
1003 | (stcol (1+ (current-column))) | |
a1506d29 | 1004 | (edpos (progn (pascal-declaration-end) |
3ba6b2ee | 1005 | (search-backward ")" (point-at-bol) t) |
da4ce263 RS |
1006 | (point))) |
1007 | (usevar (re-search-backward "\\<var\\>" stpos t))) | |
1008 | (if arg (progn | |
1009 | ;; If arg, just return indent | |
1010 | (goto-char oldpos) | |
1011 | (beginning-of-line) | |
1012 | (if (or (not usevar) (looking-at "[ \t]*var\\>")) | |
1013 | stcol (+ 4 stcol))) | |
1014 | (goto-char stpos) | |
1015 | (forward-char 1) | |
1016 | (delete-horizontal-space) | |
1017 | (if (and usevar (not (looking-at "var\\>"))) | |
1018 | (indent-to (+ 4 stcol))) | |
1019 | (pascal-indent-declaration nil stpos edpos))))) | |
1020 | ||
1021 | (defun pascal-indent-declaration (&optional arg start end) | |
1022 | "Indent current lines as declaration, lining up the `:'s or `='s." | |
1023 | (let ((pos (point-marker))) | |
1024 | (if (and (not (or arg start)) (not (pascal-declaration-beg))) | |
1025 | () | |
a1506d29 | 1026 | (let ((lineup (if (or (looking-at "\\<var\\>\\|\\<record\\>") arg start) |
da4ce263 RS |
1027 | ":" "=")) |
1028 | (stpos (if start start | |
1029 | (forward-word 2) (backward-word 1) (point))) | |
1030 | (edpos (set-marker (make-marker) | |
1031 | (if end end | |
1032 | (max (progn (pascal-declaration-end) | |
1033 | (point)) | |
1034 | pos)))) | |
b3608390 | 1035 | pascal--extra-indent) |
da4ce263 RS |
1036 | |
1037 | (goto-char stpos) | |
1038 | ;; Indent lines in record block | |
1039 | (if arg | |
f80235e3 | 1040 | (while (<= (point) edpos) |
da4ce263 RS |
1041 | (beginning-of-line) |
1042 | (delete-horizontal-space) | |
1043 | (if (looking-at "end\\>") | |
1044 | (indent-to arg) | |
1045 | (indent-to (+ arg pascal-indent-level))) | |
1046 | (forward-line 1))) | |
1047 | ||
1048 | ;; Do lineup | |
b3608390 | 1049 | (setq pascal--extra-indent (pascal-get-lineup-indent stpos edpos lineup)) |
da4ce263 | 1050 | (goto-char stpos) |
f80235e3 | 1051 | (while (and (<= (point) edpos) (not (eobp))) |
3ba6b2ee | 1052 | (if (search-forward lineup (point-at-eol) 'move) |
da4ce263 RS |
1053 | (forward-char -1)) |
1054 | (delete-horizontal-space) | |
b3608390 | 1055 | (indent-to pascal--extra-indent) |
da4ce263 RS |
1056 | (if (not (looking-at lineup)) |
1057 | (forward-line 1) ; No more indent if there is no : or = | |
1058 | (forward-char 1) | |
1059 | (delete-horizontal-space) | |
1060 | (insert " ") | |
1061 | ;; Indent record block | |
1062 | (if (looking-at "record\\>") | |
1063 | (pascal-indent-declaration (current-column))) | |
1064 | (forward-line 1))))) | |
1065 | ||
1066 | ;; If arg - move point | |
1067 | (if arg (forward-line -1) | |
f80235e3 | 1068 | (goto-char pos)))) |
da4ce263 RS |
1069 | |
1070 | ; "Return the indent level that will line up several lines within the region | |
1071 | ;from b to e nicely. The lineup string is str." | |
1072 | (defun pascal-get-lineup-indent (b e str) | |
1073 | (save-excursion | |
b3608390 | 1074 | (let ((pascal--extra-indent 0) |
27b53c17 | 1075 | (reg (concat str "\\|\\(\\<record\\>\\)\\|" pascal-defun-re))) |
da4ce263 RS |
1076 | (goto-char b) |
1077 | ;; Get rightmost position | |
1078 | (while (< (point) e) | |
3ba6b2ee | 1079 | (and (re-search-forward reg (min e (point-at-eol 2)) 'move) |
27b53c17 RS |
1080 | (cond ((match-beginning 1) |
1081 | ;; Skip record blocks | |
1082 | (pascal-declaration-end)) | |
1083 | ((match-beginning 2) | |
1084 | ;; We have entered a new procedure. Exit. | |
1085 | (goto-char e)) | |
1086 | (t | |
1087 | (goto-char (match-beginning 0)) | |
1088 | (skip-chars-backward " \t") | |
b3608390 CY |
1089 | (if (> (current-column) pascal--extra-indent) |
1090 | (setq pascal--extra-indent (current-column))) | |
27b53c17 RS |
1091 | (goto-char (match-end 0)) |
1092 | (end-of-line) | |
1093 | )))) | |
da4ce263 | 1094 | ;; In case no lineup was found |
b3608390 CY |
1095 | (if (> pascal--extra-indent 0) |
1096 | (1+ pascal--extra-indent) | |
da4ce263 RS |
1097 | ;; No lineup-string found |
1098 | (goto-char b) | |
1099 | (end-of-line) | |
1100 | (skip-chars-backward " \t") | |
1101 | (1+ (current-column)))))) | |
a1506d29 | 1102 | |
da4ce263 RS |
1103 | \f |
1104 | ||
1105 | ;;; | |
1106 | ;;; Completion | |
9566dc15 | 1107 | |
da4ce263 RS |
1108 | (defun pascal-string-diff (str1 str2) |
1109 | "Return index of first letter where STR1 and STR2 differs." | |
1110 | (catch 'done | |
1111 | (let ((diff 0)) | |
1112 | (while t | |
1113 | (if (or (> (1+ diff) (length str1)) | |
1114 | (> (1+ diff) (length str2))) | |
1115 | (throw 'done diff)) | |
1116 | (or (equal (aref str1 diff) (aref str2 diff)) | |
1117 | (throw 'done diff)) | |
1118 | (setq diff (1+ diff)))))) | |
1119 | ||
1120 | ;; Calculate all possible completions for functions if argument is `function', | |
1121 | ;; completions for procedures if argument is `procedure' or both functions and | |
1122 | ;; procedures otherwise. | |
1123 | ||
601a9508 | 1124 | (defun pascal-func-completion (type pascal-str) |
da4ce263 | 1125 | ;; Build regular expression for function/procedure names |
601a9508 SM |
1126 | (save-excursion |
1127 | (if (string= pascal-str "") | |
1128 | (setq pascal-str "[a-zA-Z_]")) | |
1129 | (let ((pascal-str (concat (cond | |
1130 | ((eq type 'procedure) "\\<\\(procedure\\)\\s +") | |
1131 | ((eq type 'function) "\\<\\(function\\)\\s +") | |
1132 | (t "\\<\\(function\\|procedure\\)\\s +")) | |
1133 | "\\<\\(" pascal-str "[a-zA-Z0-9_.]*\\)\\>")) | |
1134 | (pascal-all ()) | |
1135 | match) | |
3bb8691b | 1136 | |
601a9508 SM |
1137 | (if (not (looking-at "\\<\\(function\\|procedure\\)\\>")) |
1138 | (re-search-backward "\\<\\(function\\|procedure\\)\\>" nil t)) | |
1139 | (forward-char 1) | |
1140 | ||
1141 | ;; Search through all reachable functions | |
1142 | (while (pascal-beg-of-defun) | |
3ba6b2ee | 1143 | (if (re-search-forward pascal-str (point-at-eol) t) |
601a9508 SM |
1144 | (progn (setq match (buffer-substring (match-beginning 2) |
1145 | (match-end 2))) | |
1146 | (push match pascal-all))) | |
1147 | (goto-char (match-beginning 0))) | |
1148 | ||
1149 | pascal-all))) | |
1150 | ||
1151 | (defun pascal-get-completion-decl (pascal-str) | |
da4ce263 | 1152 | ;; Macro for searching through current declaration (var, type or const) |
f80235e3 | 1153 | ;; for matches of `str' and adding the occurrence to `all' |
da4ce263 RS |
1154 | (let ((end (save-excursion (pascal-declaration-end) |
1155 | (point))) | |
601a9508 | 1156 | (pascal-all ()) |
da4ce263 RS |
1157 | match) |
1158 | ;; Traverse lines | |
1159 | (while (< (point) end) | |
3ba6b2ee | 1160 | (if (re-search-forward "[:=]" (point-at-eol) t) |
da4ce263 | 1161 | ;; Traverse current line |
a1506d29 JB |
1162 | (while (and (re-search-backward |
1163 | (concat "\\((\\|\\<\\(var\\|type\\|const\\)\\>\\)\\|" | |
da4ce263 | 1164 | pascal-symbol-re) |
3ba6b2ee | 1165 | (point-at-bol) t) |
da4ce263 RS |
1166 | (not (match-end 1))) |
1167 | (setq match (buffer-substring (match-beginning 0) (match-end 0))) | |
9566dc15 | 1168 | (if (string-match (concat "\\<" pascal-str) match) |
601a9508 | 1169 | (push match pascal-all)))) |
3ba6b2ee | 1170 | (if (re-search-forward "\\<record\\>" (point-at-eol) t) |
da4ce263 | 1171 | (pascal-declaration-end) |
601a9508 | 1172 | (forward-line 1))) |
da4ce263 | 1173 | |
601a9508 SM |
1174 | pascal-all)) |
1175 | ||
1176 | (defun pascal-type-completion (pascal-str) | |
da4ce263 RS |
1177 | "Calculate all possible completions for types." |
1178 | (let ((start (point)) | |
601a9508 | 1179 | (pascal-all ()) |
da4ce263 RS |
1180 | goon) |
1181 | ;; Search for all reachable type declarations | |
1182 | (while (or (pascal-beg-of-defun) | |
1183 | (setq goon (not goon))) | |
1184 | (save-excursion | |
1185 | (if (and (< start (prog1 (save-excursion (pascal-end-of-defun) | |
1186 | (point)) | |
1187 | (forward-char 1))) | |
1188 | (re-search-forward | |
3a3ee445 | 1189 | "\\<type\\>\\|\\<\\(begin\\|function\\|procedure\\)\\>" |
da4ce263 RS |
1190 | start t) |
1191 | (not (match-end 1))) | |
1192 | ;; Check current type declaration | |
601a9508 SM |
1193 | (setq pascal-all |
1194 | (nconc (pascal-get-completion-decl pascal-str) | |
1195 | pascal-all))))) | |
1196 | ||
1197 | pascal-all)) | |
da4ce263 | 1198 | |
601a9508 | 1199 | (defun pascal-var-completion (prefix) |
da4ce263 | 1200 | "Calculate all possible completions for variables (or constants)." |
601a9508 SM |
1201 | (save-excursion |
1202 | (let ((start (point)) | |
1203 | (pascal-all ()) | |
1204 | goon twice) | |
1205 | ;; Search for all reachable var declarations | |
1206 | (while (or (pascal-beg-of-defun) | |
1207 | (setq goon (not goon))) | |
1208 | (save-excursion | |
1209 | (if (> start (prog1 (save-excursion (pascal-end-of-defun) | |
1210 | (point)))) | |
1211 | () ; Declarations not reachable | |
3ba6b2ee | 1212 | (if (search-forward "(" (point-at-eol) t) |
601a9508 SM |
1213 | ;; Check parameterlist |
1214 | ;; FIXME: pascal-get-completion-decl doesn't understand | |
1215 | ;; the var declarations in parameter lists :-( | |
1216 | (setq pascal-all | |
1217 | (nconc (pascal-get-completion-decl prefix) | |
1218 | pascal-all))) | |
1219 | (setq twice 2) | |
1220 | (while (>= (setq twice (1- twice)) 0) | |
1221 | (cond | |
1222 | ((and (re-search-forward | |
1223 | (concat "\\<\\(var\\|const\\)\\>\\|" | |
1224 | "\\<\\(begin\\|function\\|procedure\\)\\>") | |
1225 | start t) | |
1226 | (not (match-end 2))) | |
1227 | ;; Check var/const declarations | |
1228 | (setq pascal-all | |
1229 | (nconc (pascal-get-completion-decl prefix) | |
1230 | pascal-all))) | |
1231 | ((match-end 2) | |
1232 | (setq twice 0))))))) | |
1233 | pascal-all))) | |
1234 | ||
1235 | ||
1236 | (defun pascal-keyword-completion (keyword-list pascal-str) | |
da4ce263 | 1237 | "Give list of all possible completions of keywords in KEYWORD-LIST." |
601a9508 SM |
1238 | (let ((pascal-all ())) |
1239 | (dolist (s keyword-list) | |
1240 | (if (string-match (concat "\\<" pascal-str) s) | |
1241 | (push s pascal-all))) | |
1242 | pascal-all)) | |
da4ce263 RS |
1243 | |
1244 | ;; Function passed to completing-read, try-completion or | |
1245 | ;; all-completions to get completion on STR. If predicate is non-nil, | |
1246 | ;; it must be a function to be called for every match to check if this | |
1247 | ;; should really be a match. If flag is t, the function returns a list | |
1248 | ;; of all possible completions. If it is nil it returns a string, the | |
1249 | ;; longest possible completion, or t if STR is an exact match. If flag | |
1250 | ;; is 'lambda, the function returns t if STR is an exact match, nil | |
1251 | ;; otherwise. | |
1252 | ||
601a9508 | 1253 | (defvar pascal-completion-cache nil) |
da4ce263 | 1254 | |
601a9508 SM |
1255 | (defun pascal-completion (pascal-str pascal-pred pascal-flag) |
1256 | (let ((all (car pascal-completion-cache))) | |
1257 | ;; Check the cache's freshness. | |
1258 | (unless (and pascal-completion-cache | |
1259 | (string-prefix-p (nth 1 pascal-completion-cache) pascal-str) | |
1260 | (eq (current-buffer) (nth 2 pascal-completion-cache)) | |
1261 | (eq (field-beginning) (nth 3 pascal-completion-cache))) | |
da4ce263 | 1262 | (let ((state (car (pascal-calculate-indent)))) |
601a9508 SM |
1263 | (setq all |
1264 | ;; Determine what should be completed | |
1265 | (cond | |
1266 | ( ;--Within a declaration or parameterlist | |
1267 | (or (eq state 'declaration) (eq state 'paramlist) | |
1268 | (and (eq state 'defun) | |
1269 | (save-excursion | |
3ba6b2ee | 1270 | (re-search-backward ")[ \t]*:" (point-at-bol) t)))) |
601a9508 SM |
1271 | (if (or (eq state 'paramlist) (eq state 'defun)) |
1272 | (pascal-beg-of-defun)) | |
1273 | (nconc | |
1274 | (pascal-type-completion pascal-str) | |
1275 | (pascal-keyword-completion pascal-type-keywords pascal-str))) | |
1276 | ( ;--Starting a new statement | |
1277 | (and (not (eq state 'contexp)) | |
1278 | (save-excursion | |
1279 | (skip-chars-backward "a-zA-Z0-9_.") | |
1280 | (backward-sexp 1) | |
1281 | (or (looking-at pascal-nosemi-re) | |
1282 | (progn | |
1283 | (forward-sexp 1) | |
1284 | (looking-at "\\s *\\(;\\|:[^=]\\)"))))) | |
1285 | (nconc | |
1286 | (pascal-var-completion pascal-str) | |
1287 | (pascal-func-completion 'procedure pascal-str) | |
1288 | (pascal-keyword-completion pascal-start-keywords pascal-str))) | |
1289 | (t ;--Anywhere else | |
1290 | (nconc | |
1291 | (pascal-var-completion pascal-str) | |
1292 | (pascal-func-completion 'function pascal-str) | |
1293 | (pascal-keyword-completion pascal-separator-keywords | |
1294 | pascal-str))))) | |
1295 | ||
1296 | (setq pascal-completion-cache | |
1297 | (list all pascal-str (current-buffer) (field-beginning))))) | |
1298 | ||
1299 | ;; Now we have built a list of all matches. Give response to caller | |
1300 | (complete-with-action pascal-flag all pascal-str pascal-pred))) | |
da4ce263 RS |
1301 | |
1302 | (defvar pascal-last-word-numb 0) | |
1303 | (defvar pascal-last-word-shown nil) | |
1304 | (defvar pascal-last-completions nil) | |
1305 | ||
bcd70d97 | 1306 | (defun pascal-completions-at-point () |
da4ce263 | 1307 | (let* ((b (save-excursion (skip-chars-backward "a-zA-Z0-9_") (point))) |
601a9508 | 1308 | (e (save-excursion (skip-chars-forward "a-zA-Z0-9_") (point)))) |
bcd70d97 SM |
1309 | (when (> e b) |
1310 | (list b e #'pascal-completion)))) | |
da4ce263 | 1311 | |
bcd70d97 SM |
1312 | (define-obsolete-function-alias 'pascal-complete-word |
1313 | 'completion-at-point "24.1") | |
1314 | ||
1315 | (define-obsolete-function-alias 'pascal-show-completions | |
1316 | 'completion-help-at-point "24.1") | |
da4ce263 RS |
1317 | |
1318 | ||
1319 | (defun pascal-get-default-symbol () | |
1320 | "Return symbol around current point as a string." | |
1321 | (save-excursion | |
1322 | (buffer-substring (progn | |
1323 | (skip-chars-backward " \t") | |
1324 | (skip-chars-backward "a-zA-Z0-9_") | |
1325 | (point)) | |
1326 | (progn | |
1327 | (skip-chars-forward "a-zA-Z0-9_") | |
1328 | (point))))) | |
1329 | ||
1330 | (defun pascal-build-defun-re (str &optional arg) | |
1331 | "Return function/procedure starting with STR as regular expression. | |
1332 | With optional second arg non-nil, STR is the complete name of the instruction." | |
1333 | (if arg | |
1334 | (concat "^\\(function\\|procedure\\)[ \t]+\\(" str "\\)\\>") | |
1335 | (concat "^\\(function\\|procedure\\)[ \t]+\\(" str "[a-zA-Z0-9_]*\\)\\>"))) | |
1336 | ||
1337 | ;; Function passed to completing-read, try-completion or | |
1338 | ;; all-completions to get completion on any function name. If | |
1339 | ;; predicate is non-nil, it must be a function to be called for every | |
1340 | ;; match to check if this should really be a match. If flag is t, the | |
1341 | ;; function returns a list of all possible completions. If it is nil | |
1342 | ;; it returns a string, the longest possible completion, or t if STR | |
1343 | ;; is an exact match. If flag is 'lambda, the function returns t if | |
1344 | ;; STR is an exact match, nil otherwise. | |
1345 | ||
9566dc15 | 1346 | (defun pascal-comp-defun (pascal-str pascal-pred pascal-flag) |
da4ce263 | 1347 | (save-excursion |
601a9508 SM |
1348 | (let ((pascal-all nil)) |
1349 | ||
1350 | ;; Build regular expression for functions | |
1351 | (let ((pascal-str (pascal-build-defun-re (if (string= pascal-str "") | |
1352 | "[a-zA-Z_]" | |
1353 | pascal-str)))) | |
1354 | (goto-char (point-min)) | |
3bb8691b | 1355 | |
601a9508 SM |
1356 | ;; Build a list of all possible completions |
1357 | (while (re-search-forward pascal-str nil t) | |
1358 | (push (match-string 2) pascal-all))) | |
da4ce263 RS |
1359 | |
1360 | ;; Now we have built a list of all matches. Give response to caller | |
601a9508 | 1361 | (complete-with-action pascal-flag pascal-all pascal-str pascal-pred)))) |
da4ce263 RS |
1362 | |
1363 | (defun pascal-goto-defun () | |
1364 | "Move to specified Pascal function/procedure. | |
1365 | The default is a name found in the buffer around point." | |
1366 | (interactive) | |
1367 | (let* ((default (pascal-get-default-symbol)) | |
da4ce263 RS |
1368 | (default (if (pascal-comp-defun default nil 'lambda) |
1369 | default "")) | |
3bb8691b | 1370 | (label |
e95a67dc | 1371 | ;; Do completion with default. |
601a9508 SM |
1372 | (completing-read (if (not (string= default "")) |
1373 | (concat "Label (default " default "): ") | |
1374 | "Label: ") | |
1375 | ;; Complete with the defuns found in the | |
1376 | ;; current-buffer. | |
e95a67dc | 1377 | (let ((buf (current-buffer))) |
601a9508 SM |
1378 | (lambda (s p a) |
1379 | (with-current-buffer buf | |
1380 | (pascal-comp-defun s p a)))) | |
1381 | nil t ""))) | |
e95a67dc | 1382 | ;; If there was no response on prompt, use default value. |
da4ce263 RS |
1383 | (if (string= label "") |
1384 | (setq label default)) | |
e95a67dc | 1385 | ;; Goto right place in buffer if label is not an empty string. |
da4ce263 RS |
1386 | (or (string= label "") |
1387 | (progn | |
1388 | (goto-char (point-min)) | |
1389 | (re-search-forward (pascal-build-defun-re label t)) | |
1390 | (beginning-of-line))))) | |
1391 | ||
1392 | \f | |
1393 | ||
1394 | ;;; | |
1395 | ;;; Pascal-outline-mode | |
1396 | ;;; | |
86ac52df SM |
1397 | (defvar pascal-outline-map |
1398 | (let ((map (make-sparse-keymap))) | |
1399 | (if (fboundp 'set-keymap-name) | |
1400 | (set-keymap-name pascal-outline-map 'pascal-outline-map)) | |
1401 | (define-key map "\M-\C-a" 'pascal-outline-prev-defun) | |
1402 | (define-key map "\M-\C-e" 'pascal-outline-next-defun) | |
1403 | (define-key map "\C-c\C-d" 'pascal-outline-goto-defun) | |
1404 | (define-key map "\C-c\C-s" 'pascal-show-all) | |
1405 | (define-key map "\C-c\C-h" 'pascal-hide-other-defuns) | |
1406 | map) | |
1407 | "Keymap used in Pascal Outline mode.") | |
1408 | ||
5443c9b7 | 1409 | (define-obsolete-function-alias 'pascal-outline 'pascal-outline-mode "22.1") |
86ac52df | 1410 | (define-minor-mode pascal-outline-mode |
da4ce263 | 1411 | "Outline-line minor mode for Pascal mode. |
e1ac4066 GM |
1412 | With a prefix argument ARG, enable the mode if ARG is positive, |
1413 | and disable it otherwise. If called from Lisp, enable the mode | |
1414 | if ARG is omitted or nil. | |
1415 | ||
1416 | When enabled, portions of the text being edited may be made | |
1417 | invisible. \\<pascal-outline-map> | |
da4ce263 RS |
1418 | |
1419 | Pascal Outline mode provides some additional commands. | |
1420 | ||
1421 | \\[pascal-outline-prev-defun]\ | |
1422 | \t- Move to previous function/procedure, hiding everything else. | |
1423 | \\[pascal-outline-next-defun]\ | |
1424 | \t- Move to next function/procedure, hiding everything else. | |
1425 | \\[pascal-outline-goto-defun]\ | |
1426 | \t- Goto function/procedure prompted for in minibuffer, | |
1427 | \t hide all other functions. | |
1428 | \\[pascal-show-all]\t- Show the whole buffer. | |
1429 | \\[pascal-hide-other-defuns]\ | |
1430 | \t- Hide everything but the current function (function under the cursor). | |
1431 | \\[pascal-outline]\t- Leave pascal-outline-mode." | |
86ac52df SM |
1432 | :init-value nil :lighter " Outl" :keymap pascal-outline-map |
1433 | (add-to-invisibility-spec '(pascal . t)) | |
1434 | (unless pascal-outline-mode | |
1435 | (pascal-show-all))) | |
da4ce263 | 1436 | |
3672149f | 1437 | (defun pascal-outline-change (b e hide) |
86ac52df SM |
1438 | (when (> e b) |
1439 | ;; We could try and optimize this in the case where the region is | |
1440 | ;; already hidden. But I'm not sure it's worth the trouble. | |
1441 | (remove-overlays b e 'invisible 'pascal) | |
3672149f | 1442 | (when hide |
86ac52df SM |
1443 | (let ((ol (make-overlay b e nil t nil))) |
1444 | (overlay-put ol 'invisible 'pascal) | |
1445 | (overlay-put ol 'evaporate t))))) | |
da4ce263 RS |
1446 | |
1447 | (defun pascal-show-all () | |
1448 | "Show all of the text in the buffer." | |
1449 | (interactive) | |
3672149f | 1450 | (pascal-outline-change (point-min) (point-max) nil)) |
da4ce263 RS |
1451 | |
1452 | (defun pascal-hide-other-defuns () | |
1453 | "Show only the current defun." | |
1454 | (interactive) | |
1455 | (save-excursion | |
1456 | (let ((beg (progn (if (not (looking-at "\\(function\\|procedure\\)\\>")) | |
1457 | (pascal-beg-of-defun)) | |
3672149f | 1458 | (line-beginning-position))) |
da4ce263 RS |
1459 | (end (progn (pascal-end-of-defun) |
1460 | (backward-sexp 1) | |
3672149f | 1461 | (line-beginning-position 2))) |
da4ce263 | 1462 | (opoint (point-min))) |
3672149f SM |
1463 | ;; BEG at BOL. |
1464 | ;; OPOINT at EOL. | |
1465 | ;; END at BOL. | |
da4ce263 RS |
1466 | (goto-char (point-min)) |
1467 | ||
1468 | ;; Hide all functions before current function | |
3672149f SM |
1469 | (while (re-search-forward "^[ \t]*\\(function\\|procedure\\)\\>" |
1470 | beg 'move) | |
1471 | (pascal-outline-change opoint (line-end-position 0) t) | |
1472 | (setq opoint (line-end-position)) | |
da4ce263 RS |
1473 | ;; Functions may be nested |
1474 | (if (> (progn (pascal-end-of-defun) (point)) beg) | |
1475 | (goto-char opoint))) | |
1476 | (if (> beg opoint) | |
3672149f | 1477 | (pascal-outline-change opoint (1- beg) t)) |
da4ce263 RS |
1478 | |
1479 | ;; Show current function | |
3672149f | 1480 | (pascal-outline-change (1- beg) end nil) |
da4ce263 RS |
1481 | ;; Hide nested functions |
1482 | (forward-char 1) | |
1483 | (while (re-search-forward "^\\(function\\|procedure\\)\\>" end 'move) | |
3672149f | 1484 | (setq opoint (line-end-position)) |
da4ce263 | 1485 | (pascal-end-of-defun) |
3672149f | 1486 | (pascal-outline-change opoint (line-end-position) t)) |
da4ce263 RS |
1487 | |
1488 | (goto-char end) | |
1489 | (setq opoint end) | |
1490 | ||
1491 | ;; Hide all function after current function | |
1492 | (while (re-search-forward "^\\(function\\|procedure\\)\\>" nil 'move) | |
3672149f SM |
1493 | (pascal-outline-change opoint (line-end-position 0) t) |
1494 | (setq opoint (line-end-position)) | |
da4ce263 | 1495 | (pascal-end-of-defun)) |
3672149f | 1496 | (pascal-outline-change opoint (point-max) t) |
da4ce263 RS |
1497 | |
1498 | ;; Hide main program | |
1499 | (if (< (progn (forward-line -1) (point)) end) | |
1a2b6c52 | 1500 | (progn |
da4ce263 RS |
1501 | (goto-char beg) |
1502 | (pascal-end-of-defun) | |
1503 | (backward-sexp 1) | |
3672149f | 1504 | (pascal-outline-change (line-end-position) (point-max) t)))))) |
1a2b6c52 | 1505 | |
da4ce263 RS |
1506 | (defun pascal-outline-next-defun () |
1507 | "Move to next function/procedure, hiding all others." | |
1508 | (interactive) | |
1509 | (pascal-end-of-defun) | |
1510 | (pascal-hide-other-defuns)) | |
1511 | ||
1512 | (defun pascal-outline-prev-defun () | |
1513 | "Move to previous function/procedure, hiding all others." | |
1514 | (interactive) | |
1515 | (pascal-beg-of-defun) | |
1516 | (pascal-hide-other-defuns)) | |
1517 | ||
1518 | (defun pascal-outline-goto-defun () | |
1519 | "Move to specified function/procedure, hiding all others." | |
1520 | (interactive) | |
1521 | (pascal-goto-defun) | |
1522 | (pascal-hide-other-defuns)) | |
1a2b6c52 | 1523 | |
896546cd RS |
1524 | (provide 'pascal) |
1525 | ||
da4ce263 | 1526 | ;;; pascal.el ends here |