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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 | |
f80235e3 | 161 | (defconst pascal-font-lock-keywords (purecopy |
210cf16d | 162 | (list |
f80235e3 RS |
163 | '("^[ \t]*\\(function\\|pro\\(cedure\\|gram\\)\\)\\>[ \t]*\\([a-z]\\)" |
164 | 1 font-lock-keyword-face) | |
165 | '("^[ \t]*\\(function\\|pro\\(cedure\\|gram\\)\\)\\>[ \t]*\\([a-z][a-z0-9_]*\\)" | |
166 | 3 font-lock-function-name-face t) | |
210cf16d RS |
167 | ; ("type" "const" "real" "integer" "char" "boolean" "var" |
168 | ; "record" "array" "file") | |
169 | (cons (concat "\\<\\(array\\|boolean\\|c\\(har\\|onst\\)\\|file\\|" | |
170 | "integer\\|re\\(al\\|cord\\)\\|type\\|var\\)\\>") | |
171 | 'font-lock-type-face) | |
883212ce | 172 | '("\\<\\(label\\|external\\|forward\\)\\>" . font-lock-constant-face) |
f80235e3 | 173 | '("\\<\\([0-9]+\\)[ \t]*:" 1 font-lock-function-name-face) |
210cf16d RS |
174 | ; ("of" "to" "for" "if" "then" "else" "case" "while" |
175 | ; "do" "until" "and" "or" "not" "in" "with" "repeat" "begin" "end") | |
176 | (concat "\\<\\(" | |
177 | "and\\|begin\\|case\\|do\\|e\\(lse\\|nd\\)\\|for\\|i[fn]\\|" | |
178 | "not\\|o[fr]\\|repeat\\|t\\(hen\\|o\\)\\|until\\|w\\(hile\\|ith\\)" | |
179 | "\\)\\>") | |
180 | '("\\<\\(goto\\)\\>[ \t]*\\([0-9]+\\)?" | |
f80235e3 RS |
181 | 1 font-lock-keyword-face) |
182 | '("\\<\\(goto\\)\\>[ \t]*\\([0-9]+\\)?" | |
183 | 2 font-lock-keyword-face t))) | |
210cf16d | 184 | "Additional expressions to highlight in Pascal mode.") |
f80235e3 | 185 | (put 'pascal-mode 'font-lock-defaults '(pascal-font-lock-keywords nil t)) |
210cf16d | 186 | |
f0cca206 | 187 | (defcustom pascal-indent-level 3 |
fb7ada5f | 188 | "Indentation of Pascal statements with respect to containing block." |
f0cca206 RS |
189 | :type 'integer |
190 | :group 'pascal) | |
191 | ||
192 | (defcustom pascal-case-indent 2 | |
fb7ada5f | 193 | "Indentation for case statements." |
f0cca206 RS |
194 | :type 'integer |
195 | :group 'pascal) | |
196 | ||
197 | (defcustom pascal-auto-newline nil | |
fb7ada5f | 198 | "Non-nil means automatically insert newlines in certain cases. |
f0cca206 RS |
199 | These include after semicolons and after the punctuation mark after an `end'." |
200 | :type 'boolean | |
201 | :group 'pascal) | |
202 | ||
27b53c17 | 203 | (defcustom pascal-indent-nested-functions t |
fb7ada5f | 204 | "Non-nil means nested functions are indented." |
27b53c17 RS |
205 | :type 'boolean |
206 | :group 'pascal) | |
207 | ||
f0cca206 | 208 | (defcustom pascal-tab-always-indent t |
fb7ada5f | 209 | "Non-nil means TAB in Pascal mode should always reindent the current line. |
f0cca206 RS |
210 | If this is nil, TAB inserts a tab if it is at the end of the line |
211 | and follows non-whitespace text." | |
212 | :type 'boolean | |
213 | :group 'pascal) | |
214 | ||
215 | (defcustom pascal-auto-endcomments t | |
fb7ada5f | 216 | "Non-nil means automatically insert comments after certain `end's. |
f0cca206 RS |
217 | Specifically, this is done after the ends of cases statements and functions. |
218 | The name of the function or case is included between the braces." | |
219 | :type 'boolean | |
220 | :group 'pascal) | |
221 | ||
222 | (defcustom pascal-auto-lineup '(all) | |
fb7ada5f | 223 | "List of contexts where auto lineup of :'s or ='s should be done. |
3a3ee445 RS |
224 | Elements can be of type: 'paramlist', 'declaration' or 'case', which will |
225 | do auto lineup in parameterlist, declarations or case-statements | |
3672149f | 226 | respectively. The word 'all' will do all lineups. '(case paramlist) for |
3a3ee445 | 227 | instance will do lineup in case-statements and parameterlist, while '(all) |
f0cca206 | 228 | will do all lineups." |
27b53c17 RS |
229 | :type '(set :extra-offset 8 |
230 | (const :tag "Everything" all) | |
231 | (const :tag "Parameter lists" paramlist) | |
dbdb7031 | 232 | (const :tag "Declarations" declaration) |
27b53c17 | 233 | (const :tag "Case statements" case)) |
f0cca206 RS |
234 | :group 'pascal) |
235 | ||
bcd70d97 | 236 | (defvar pascal-toggle-completions nil |
f1a4e679 CY |
237 | "If non-nil, `pascal-complete-word' tries all possible completions. |
238 | Repeated use of \\[pascal-complete-word] then shows all | |
239 | completions in turn, instead of displaying a list of all possible | |
240 | completions.") | |
bcd70d97 SM |
241 | (make-obsolete-variable 'pascal-toggle-completions |
242 | 'completion-cycle-threshold "24.1") | |
3a3ee445 | 243 | |
f0cca206 | 244 | (defcustom pascal-type-keywords |
da4ce263 | 245 | '("array" "file" "packed" "char" "integer" "real" "string" "record") |
fb7ada5f | 246 | "Keywords for types used when completing a word in a declaration or parmlist. |
f0cca206 RS |
247 | These include integer, real, char, etc. |
248 | The types defined within the Pascal program | |
249 | are handled in another way, and should not be added to this list." | |
250 | :type '(repeat (string :tag "Keyword")) | |
251 | :group 'pascal) | |
3a3ee445 | 252 | |
f0cca206 | 253 | (defcustom pascal-start-keywords |
da4ce263 RS |
254 | '("begin" "end" "function" "procedure" "repeat" "until" "while" |
255 | "read" "readln" "reset" "rewrite" "write" "writeln") | |
fb7ada5f | 256 | "Keywords to complete when standing at the first word of a statement. |
f0cca206 | 257 | These are keywords such as begin, repeat, until, readln. |
da4ce263 | 258 | The procedures and variables defined within the Pascal program |
3090ac12 | 259 | are handled in another way, and should not be added to this list." |
f0cca206 RS |
260 | :type '(repeat (string :tag "Keyword")) |
261 | :group 'pascal) | |
3a3ee445 | 262 | |
f0cca206 | 263 | (defcustom pascal-separator-keywords |
da4ce263 | 264 | '("downto" "else" "mod" "div" "then") |
fb7ada5f | 265 | "Keywords to complete when NOT standing at the first word of a statement. |
f0cca206 RS |
266 | These are keywords such as downto, else, mod, then. |
267 | Variables and function names defined within the Pascal program | |
268 | are handled in another way, and should not be added to this list." | |
269 | :type '(repeat (string :tag "Keyword")) | |
270 | :group 'pascal) | |
271 | ||
da4ce263 RS |
272 | |
273 | ;;; | |
274 | ;;; Macros | |
275 | ;;; | |
276 | ||
da4ce263 RS |
277 | (defun pascal-declaration-end () |
278 | (let ((nest 1)) | |
279 | (while (and (> nest 0) | |
a1506d29 JB |
280 | (re-search-forward |
281 | "[:=]\\|\\(\\<record\\>\\)\\|\\(\\<end\\>\\)" | |
3ba6b2ee | 282 | (point-at-eol 2) t)) |
da4ce263 | 283 | (cond ((match-beginning 1) (setq nest (1+ nest))) |
2e952aac RS |
284 | ((match-beginning 2) (setq nest (1- nest))) |
285 | ((looking-at "[^(\n]+)") (setq nest 0)))))) | |
da4ce263 | 286 | |
3a3ee445 | 287 | |
da4ce263 RS |
288 | (defun pascal-declaration-beg () |
289 | (let ((nest 1)) | |
290 | (while (and (> nest 0) | |
3ba6b2ee | 291 | (re-search-backward "[:=]\\|\\<\\(type\\|var\\|label\\|const\\)\\>\\|\\(\\<record\\>\\)\\|\\(\\<end\\>\\)" (point-at-bol 0) t)) |
da4ce263 RS |
292 | (cond ((match-beginning 1) (setq nest 0)) |
293 | ((match-beginning 2) (setq nest (1- nest))) | |
294 | ((match-beginning 3) (setq nest (1+ nest))))) | |
295 | (= nest 0))) | |
3a3ee445 | 296 | |
a1506d29 | 297 | |
da4ce263 | 298 | (defsubst pascal-within-string () |
3ba6b2ee | 299 | (nth 3 (parse-partial-sexp (point-at-bol) (point)))) |
da4ce263 | 300 | |
1a2b6c52 RS |
301 | |
302 | ;;;###autoload | |
3672149f | 303 | (define-derived-mode pascal-mode prog-mode "Pascal" |
da4ce263 RS |
304 | "Major mode for editing Pascal code. \\<pascal-mode-map> |
305 | TAB indents for Pascal code. Delete converts tabs to spaces as it moves back. | |
306 | ||
bcd70d97 | 307 | \\[completion-at-point] completes the word around current point with respect \ |
da4ce263 | 308 | to position in code |
bcd70d97 | 309 | \\[completion-help-at-point] shows all possible completions at this point. |
da4ce263 RS |
310 | |
311 | Other useful functions are: | |
312 | ||
313 | \\[pascal-mark-defun]\t- Mark function. | |
314 | \\[pascal-insert-block]\t- insert begin ... end; | |
315 | \\[pascal-star-comment]\t- insert (* ... *) | |
316 | \\[pascal-comment-area]\t- Put marked area in a comment, fixing nested comments. | |
317 | \\[pascal-uncomment-area]\t- Uncomment an area commented with \ | |
318 | \\[pascal-comment-area]. | |
319 | \\[pascal-beg-of-defun]\t- Move to beginning of current function. | |
320 | \\[pascal-end-of-defun]\t- Move to end of current function. | |
321 | \\[pascal-goto-defun]\t- Goto function prompted for in the minibuffer. | |
86ac52df | 322 | \\[pascal-outline-mode]\t- Enter `pascal-outline-mode'. |
da4ce263 RS |
323 | |
324 | Variables controlling indentation/edit style: | |
325 | ||
3672149f | 326 | `pascal-indent-level' (default 3) |
da4ce263 | 327 | Indentation of Pascal statements with respect to containing block. |
3672149f | 328 | `pascal-case-indent' (default 2) |
da4ce263 | 329 | Indentation for case statements. |
3672149f | 330 | `pascal-auto-newline' (default nil) |
4a6fd75f KH |
331 | Non-nil means automatically newline after semicolons and the punctuation |
332 | mark after an end. | |
3672149f | 333 | `pascal-indent-nested-functions' (default t) |
27b53c17 | 334 | Non-nil means nested functions are indented. |
3672149f | 335 | `pascal-tab-always-indent' (default t) |
1a2b6c52 RS |
336 | Non-nil means TAB in Pascal mode should always reindent the current line, |
337 | regardless of where in the line point is when the TAB command is used. | |
3672149f | 338 | `pascal-auto-endcomments' (default t) |
da4ce263 RS |
339 | Non-nil means a comment { ... } is set after the ends which ends cases and |
340 | functions. The name of the function or case will be set between the braces. | |
3672149f | 341 | `pascal-auto-lineup' (default t) |
e936de0b | 342 | List of contexts where auto lineup of :'s or ='s should be done. |
da4ce263 | 343 | |
3672149f SM |
344 | See also the user variables `pascal-type-keywords', `pascal-start-keywords' and |
345 | `pascal-separator-keywords'. | |
1a2b6c52 RS |
346 | |
347 | Turning on Pascal mode calls the value of the variable pascal-mode-hook with | |
348 | no args, if that value is non-nil." | |
3672149f SM |
349 | (set (make-local-variable 'local-abbrev-table) pascal-mode-abbrev-table) |
350 | (set (make-local-variable 'indent-line-function) 'pascal-indent-line) | |
351 | (set (make-local-variable 'comment-indent-function) 'pascal-indent-comment) | |
352 | (set (make-local-variable 'parse-sexp-ignore-comments) nil) | |
353 | (set (make-local-variable 'blink-matching-paren-dont-ignore-comments) t) | |
354 | (set (make-local-variable 'case-fold-search) t) | |
355 | (set (make-local-variable 'comment-start) "{") | |
356 | (set (make-local-variable 'comment-start-skip) "(\\*+ *\\|{ *") | |
357 | (set (make-local-variable 'comment-end) "}") | |
bcd70d97 | 358 | (add-hook 'completion-at-point-functions 'pascal-completions-at-point nil t) |
69b354eb | 359 | ;; Font lock support |
3672149f SM |
360 | (set (make-local-variable 'font-lock-defaults) |
361 | '(pascal-font-lock-keywords nil t)) | |
69b354eb | 362 | ;; Imenu support |
3672149f SM |
363 | (set (make-local-variable 'imenu-generic-expression) |
364 | pascal-imenu-generic-expression) | |
365 | (set (make-local-variable 'imenu-case-fold-search) t) | |
366 | ;; Pascal-mode's own hide/show support. | |
367 | (add-to-invisibility-spec '(pascal . t))) | |
1a2b6c52 | 368 | |
da4ce263 RS |
369 | \f |
370 | ||
1a2b6c52 RS |
371 | ;;; |
372 | ;;; Electric functions | |
373 | ;;; | |
1a2b6c52 RS |
374 | (defun electric-pascal-terminate-line () |
375 | "Terminate line and indent next line." | |
376 | (interactive) | |
da4ce263 | 377 | ;; First, check if current line should be indented |
1a2b6c52 RS |
378 | (save-excursion |
379 | (beginning-of-line) | |
380 | (skip-chars-forward " \t") | |
da4ce263 | 381 | (if (looking-at pascal-autoindent-lines-re) |
1a2b6c52 | 382 | (pascal-indent-line))) |
da4ce263 | 383 | (delete-horizontal-space) ; Removes trailing whitespaces |
1a2b6c52 | 384 | (newline) |
da4ce263 | 385 | ;; Indent next line |
1a2b6c52 RS |
386 | (pascal-indent-line) |
387 | ;; Maybe we should set some endcomments | |
388 | (if pascal-auto-endcomments | |
389 | (pascal-set-auto-comments)) | |
390 | ;; Check if we shall indent inside comment | |
391 | (let ((setstar nil)) | |
392 | (save-excursion | |
393 | (forward-line -1) | |
394 | (skip-chars-forward " \t") | |
da4ce263 | 395 | (cond ((looking-at "\\*[ \t]+)") |
1a2b6c52 RS |
396 | ;; Delete region between `*' and `)' if there is only whitespaces. |
397 | (forward-char 1) | |
da4ce263 | 398 | (delete-horizontal-space)) |
1a2b6c52 | 399 | ((and (looking-at "(\\*\\|\\*[^)]") |
3ba6b2ee | 400 | (not (save-excursion (search-forward "*)" (point-at-eol) t)))) |
1a2b6c52 RS |
401 | (setq setstar t)))) |
402 | ;; If last line was a star comment line then this one shall be too. | |
a1506d29 | 403 | (if (null setstar) |
da4ce263 RS |
404 | (pascal-indent-line) |
405 | (insert "* ")))) | |
1a2b6c52 | 406 | |
1a2b6c52 | 407 | |
da4ce263 RS |
408 | (defun electric-pascal-semi-or-dot () |
409 | "Insert `;' or `.' character and reindent the line." | |
1a2b6c52 | 410 | (interactive) |
1ba983e8 | 411 | (insert last-command-event) |
1a2b6c52 RS |
412 | (save-excursion |
413 | (beginning-of-line) | |
414 | (pascal-indent-line)) | |
415 | (if pascal-auto-newline | |
416 | (electric-pascal-terminate-line))) | |
417 | ||
418 | (defun electric-pascal-colon () | |
53964682 | 419 | "Insert `:' and do all indentations except line indent on this line." |
1a2b6c52 | 420 | (interactive) |
1ba983e8 | 421 | (insert last-command-event) |
da4ce263 RS |
422 | ;; Do nothing if within string. |
423 | (if (pascal-within-string) | |
424 | () | |
425 | (save-excursion | |
426 | (beginning-of-line) | |
427 | (pascal-indent-line)) | |
428 | (let ((pascal-tab-always-indent nil)) | |
429 | (pascal-indent-command)))) | |
430 | ||
1a2b6c52 | 431 | (defun electric-pascal-equal () |
cd1181db | 432 | "Insert `=', and do indentation if within type declaration." |
1a2b6c52 | 433 | (interactive) |
1ba983e8 | 434 | (insert last-command-event) |
da4ce263 | 435 | (if (eq (car (pascal-calculate-indent)) 'declaration) |
1a2b6c52 RS |
436 | (let ((pascal-tab-always-indent nil)) |
437 | (pascal-indent-command)))) | |
438 | ||
9f51be89 | 439 | (defun electric-pascal-hash () |
4a6fd75f | 440 | "Insert `#', and indent to column 0 if this is a CPP directive." |
9f51be89 | 441 | (interactive) |
1ba983e8 | 442 | (insert last-command-event) |
9f51be89 RS |
443 | (if (save-excursion (beginning-of-line) (looking-at "^[ \t]*#")) |
444 | (save-excursion (beginning-of-line) | |
445 | (delete-horizontal-space)))) | |
446 | ||
1a2b6c52 | 447 | (defun electric-pascal-tab () |
da4ce263 | 448 | "Function called when TAB is pressed in Pascal mode." |
1a2b6c52 | 449 | (interactive) |
9f51be89 RS |
450 | ;; Do nothing if within a string or in a CPP directive. |
451 | (if (or (pascal-within-string) | |
452 | (and (not (bolp)) | |
453 | (save-excursion (beginning-of-line) (eq (following-char) ?#)))) | |
da4ce263 RS |
454 | (insert "\t") |
455 | ;; If pascal-tab-always-indent, indent the beginning of the line. | |
456 | (if pascal-tab-always-indent | |
457 | (save-excursion | |
458 | (beginning-of-line) | |
459 | (pascal-indent-line)) | |
2e952aac RS |
460 | (if (save-excursion |
461 | (skip-chars-backward " \t") | |
462 | (bolp)) | |
463 | (pascal-indent-line) | |
464 | (insert "\t"))) | |
da4ce263 RS |
465 | (pascal-indent-command))) |
466 | ||
467 | \f | |
1a2b6c52 RS |
468 | |
469 | ;;; | |
470 | ;;; Interactive functions | |
471 | ;;; | |
b3608390 CY |
472 | (defvar pascal--extra-indent 0) |
473 | ||
1a2b6c52 | 474 | (defun pascal-insert-block () |
da4ce263 | 475 | "Insert Pascal begin ... end; block in the code with right indentation." |
1a2b6c52 | 476 | (interactive) |
1a2b6c52 RS |
477 | (insert "begin") |
478 | (electric-pascal-terminate-line) | |
479 | (save-excursion | |
6acae80a | 480 | (newline) |
1a2b6c52 RS |
481 | (insert "end;") |
482 | (beginning-of-line) | |
483 | (pascal-indent-line))) | |
484 | ||
485 | (defun pascal-star-comment () | |
da4ce263 | 486 | "Insert Pascal star comment at point." |
1a2b6c52 RS |
487 | (interactive) |
488 | (pascal-indent-line) | |
489 | (insert "(*") | |
490 | (electric-pascal-terminate-line) | |
491 | (save-excursion | |
492 | (electric-pascal-terminate-line) | |
da4ce263 RS |
493 | (delete-horizontal-space) |
494 | (insert ")")) | |
495 | (insert " ")) | |
1a2b6c52 | 496 | |
da4ce263 | 497 | (defun pascal-mark-defun () |
1a2b6c52 | 498 | "Mark the current pascal function (or procedure). |
da4ce263 | 499 | This puts the mark at the end, and point at the beginning." |
1a2b6c52 RS |
500 | (interactive) |
501 | (push-mark (point)) | |
da4ce263 | 502 | (pascal-end-of-defun) |
1a2b6c52 | 503 | (push-mark (point)) |
da4ce263 | 504 | (pascal-beg-of-defun) |
a445370f DN |
505 | (when (featurep 'xemacs) |
506 | (zmacs-activate-region))) | |
1a2b6c52 RS |
507 | |
508 | (defun pascal-comment-area (start end) | |
da4ce263 RS |
509 | "Put the region into a Pascal comment. |
510 | The comments that are in this area are \"deformed\": | |
511 | `*)' becomes `!(*' and `}' becomes `!{'. | |
512 | These deformed comments are returned to normal if you use | |
513 | \\[pascal-uncomment-area] to undo the commenting. | |
514 | ||
515 | The commented area starts with `pascal-exclude-str-start', and ends with | |
516 | `pascal-include-str-end'. But if you change these variables, | |
517 | \\[pascal-uncomment-area] won't recognize the comments." | |
1a2b6c52 RS |
518 | (interactive "r") |
519 | (save-excursion | |
520 | ;; Insert start and endcomments | |
521 | (goto-char end) | |
522 | (if (and (save-excursion (skip-chars-forward " \t") (eolp)) | |
523 | (not (save-excursion (skip-chars-backward " \t") (bolp)))) | |
524 | (forward-line 1) | |
525 | (beginning-of-line)) | |
da4ce263 | 526 | (insert pascal-exclude-str-end) |
1a2b6c52 RS |
527 | (setq end (point)) |
528 | (newline) | |
529 | (goto-char start) | |
530 | (beginning-of-line) | |
da4ce263 | 531 | (insert pascal-exclude-str-start) |
1a2b6c52 RS |
532 | (newline) |
533 | ;; Replace end-comments within commented area | |
534 | (goto-char end) | |
535 | (save-excursion | |
536 | (while (re-search-backward "\\*)" start t) | |
537 | (replace-match "!(*" t t))) | |
538 | (save-excursion | |
539 | (while (re-search-backward "}" start t) | |
540 | (replace-match "!{" t t))))) | |
541 | ||
542 | (defun pascal-uncomment-area () | |
da4ce263 RS |
543 | "Uncomment a commented area; change deformed comments back to normal. |
544 | This command does nothing if the pointer is not in a commented | |
1a2b6c52 RS |
545 | area. See also `pascal-comment-area'." |
546 | (interactive) | |
547 | (save-excursion | |
548 | (let ((start (point)) | |
549 | (end (point))) | |
550 | ;; Find the boundaries of the comment | |
551 | (save-excursion | |
da4ce263 | 552 | (setq start (progn (search-backward pascal-exclude-str-start nil t) |
1a2b6c52 | 553 | (point))) |
da4ce263 | 554 | (setq end (progn (search-forward pascal-exclude-str-end nil t) |
1a2b6c52 RS |
555 | (point)))) |
556 | ;; Check if we're really inside a comment | |
557 | (if (or (equal start (point)) (<= end (point))) | |
558 | (message "Not standing within commented area.") | |
559 | (progn | |
560 | ;; Remove endcomment | |
561 | (goto-char end) | |
562 | (beginning-of-line) | |
563 | (let ((pos (point))) | |
564 | (end-of-line) | |
565 | (delete-region pos (1+ (point)))) | |
566 | ;; Change comments back to normal | |
567 | (save-excursion | |
568 | (while (re-search-backward "!{" start t) | |
569 | (replace-match "}" t t))) | |
570 | (save-excursion | |
571 | (while (re-search-backward "!(\\*" start t) | |
572 | (replace-match "*)" t t))) | |
573 | ;; Remove startcomment | |
574 | (goto-char start) | |
575 | (beginning-of-line) | |
576 | (let ((pos (point))) | |
577 | (end-of-line) | |
578 | (delete-region pos (1+ (point))))))))) | |
579 | ||
da4ce263 RS |
580 | (defun pascal-beg-of-defun () |
581 | "Move backward to the beginning of the current function or procedure." | |
1a2b6c52 | 582 | (interactive) |
da4ce263 RS |
583 | (catch 'found |
584 | (if (not (looking-at (concat "\\s \\|\\s)\\|" pascal-defun-re))) | |
585 | (forward-sexp 1)) | |
586 | (let ((nest 0) (max -1) (func 0) | |
a1506d29 | 587 | (reg (concat pascal-beg-block-re "\\|" |
da4ce263 RS |
588 | pascal-end-block-re "\\|" |
589 | pascal-defun-re))) | |
590 | (while (re-search-backward reg nil 'move) | |
591 | (cond ((let ((state (save-excursion | |
592 | (parse-partial-sexp (point-min) (point))))) | |
593 | (or (nth 3 state) (nth 4 state))) ; Inside string or comment | |
594 | ()) | |
595 | ((match-end 1) ; begin|case|record|repeat | |
596 | (if (and (looking-at "\\<record\\>") (>= max 0)) | |
597 | (setq func (1- func))) | |
598 | (setq nest (1+ nest) | |
599 | max (max nest max))) | |
600 | ((match-end 2) ; end|until | |
601 | (if (and (= nest max) (>= max 0)) | |
602 | (setq func (1+ func))) | |
603 | (setq nest (1- nest))) | |
604 | ((match-end 3) ; function|procedure | |
27b53c17 | 605 | (if (= 0 func) |
da4ce263 RS |
606 | (throw 'found t) |
607 | (setq func (1- func))))))) | |
608 | nil)) | |
609 | ||
610 | (defun pascal-end-of-defun () | |
611 | "Move forward to the end of the current function or procedure." | |
1a2b6c52 | 612 | (interactive) |
da4ce263 RS |
613 | (if (looking-at "\\s ") |
614 | (forward-sexp 1)) | |
615 | (if (not (looking-at pascal-defun-re)) | |
616 | (pascal-beg-of-defun)) | |
617 | (forward-char 1) | |
618 | (let ((nest 0) (func 1) | |
a1506d29 | 619 | (reg (concat pascal-beg-block-re "\\|" |
da4ce263 RS |
620 | pascal-end-block-re "\\|" |
621 | pascal-defun-re))) | |
622 | (while (and (/= func 0) | |
623 | (re-search-forward reg nil 'move)) | |
624 | (cond ((let ((state (save-excursion | |
625 | (parse-partial-sexp (point-min) (point))))) | |
626 | (or (nth 3 state) (nth 4 state))) ; Inside string or comment | |
627 | ()) | |
628 | ((match-end 1) | |
629 | (setq nest (1+ nest)) | |
630 | (if (save-excursion | |
631 | (goto-char (match-beginning 0)) | |
632 | (looking-at "\\<record\\>")) | |
633 | (setq func (1+ func)))) | |
634 | ((match-end 2) | |
635 | (setq nest (1- nest)) | |
636 | (if (= nest 0) | |
637 | (setq func (1- func)))) | |
638 | ((match-end 3) | |
639 | (setq func (1+ func)))))) | |
640 | (forward-line 1)) | |
1a2b6c52 | 641 | |
3a3ee445 RS |
642 | (defun pascal-end-of-statement () |
643 | "Move forward to end of current statement." | |
644 | (interactive) | |
a0bd2457 RS |
645 | (let ((parse-sexp-ignore-comments t) |
646 | (nest 0) pos | |
3a3ee445 RS |
647 | (regexp (concat "\\(" pascal-beg-block-re "\\)\\|\\(" |
648 | pascal-end-block-re "\\)"))) | |
649 | (if (not (looking-at "[ \t\n]")) (forward-sexp -1)) | |
650 | (or (looking-at pascal-beg-block-re) | |
651 | ;; Skip to end of statement | |
652 | (setq pos (catch 'found | |
653 | (while t | |
654 | (forward-sexp 1) | |
655 | (cond ((looking-at "[ \t]*;") | |
656 | (skip-chars-forward "^;") | |
657 | (forward-char 1) | |
658 | (throw 'found (point))) | |
659 | ((save-excursion | |
660 | (forward-sexp -1) | |
661 | (looking-at pascal-beg-block-re)) | |
662 | (goto-char (match-beginning 0)) | |
663 | (throw 'found nil)) | |
664 | ((eobp) | |
665 | (throw 'found (point)))))))) | |
666 | (if (not pos) | |
667 | ;; Skip a whole block | |
668 | (catch 'found | |
669 | (while t | |
670 | (re-search-forward regexp nil 'move) | |
a1506d29 | 671 | (setq nest (if (match-end 1) |
3a3ee445 RS |
672 | (1+ nest) |
673 | (1- nest))) | |
674 | (cond ((eobp) | |
675 | (throw 'found (point))) | |
676 | ((= 0 nest) | |
677 | (throw 'found (pascal-end-of-statement)))))) | |
678 | pos))) | |
679 | ||
1a2b6c52 | 680 | (defun pascal-downcase-keywords () |
da4ce263 | 681 | "Downcase all Pascal keywords in the buffer." |
1a2b6c52 RS |
682 | (interactive) |
683 | (pascal-change-keywords 'downcase-word)) | |
684 | ||
685 | (defun pascal-upcase-keywords () | |
da4ce263 | 686 | "Upcase all Pascal keywords in the buffer." |
1a2b6c52 RS |
687 | (interactive) |
688 | (pascal-change-keywords 'upcase-word)) | |
689 | ||
690 | (defun pascal-capitalize-keywords () | |
da4ce263 | 691 | "Capitalize all Pascal keywords in the buffer." |
1a2b6c52 RS |
692 | (interactive) |
693 | (pascal-change-keywords 'capitalize-word)) | |
694 | ||
da4ce263 | 695 | ;; Change the keywords according to argument. |
1a2b6c52 | 696 | (defun pascal-change-keywords (change-word) |
1a2b6c52 | 697 | (save-excursion |
da4ce263 RS |
698 | (let ((keyword-re (concat "\\<\\(" |
699 | (mapconcat 'identity pascal-keywords "\\|") | |
700 | "\\)\\>"))) | |
701 | (goto-char (point-min)) | |
702 | (while (re-search-forward keyword-re nil t) | |
703 | (funcall change-word -1))))) | |
704 | ||
705 | \f | |
1a2b6c52 RS |
706 | |
707 | ;;; | |
708 | ;;; Other functions | |
709 | ;;; | |
1a2b6c52 | 710 | (defun pascal-set-auto-comments () |
da4ce263 RS |
711 | "Insert `{ case }' or `{ NAME }' on this line if appropriate. |
712 | Insert `{ case }' if there is an `end' on the line which | |
713 | ends a case block. Insert `{ NAME }' if there is an `end' | |
714 | on the line which ends a function or procedure named NAME." | |
1a2b6c52 RS |
715 | (save-excursion |
716 | (forward-line -1) | |
717 | (skip-chars-forward " \t") | |
da4ce263 | 718 | (if (and (looking-at "\\<end;") |
1a2b6c52 RS |
719 | (not (save-excursion |
720 | (end-of-line) | |
3ba6b2ee | 721 | (search-backward "{" (point-at-bol) t)))) |
81aca4f4 RS |
722 | (let ((type (car (pascal-calculate-indent)))) |
723 | (if (eq type 'declaration) | |
724 | () | |
725 | (if (eq type 'case) | |
726 | ;; This is a case block | |
727 | (progn | |
728 | (end-of-line) | |
729 | (delete-horizontal-space) | |
730 | (insert " { case }")) | |
731 | (let ((nest 1)) | |
732 | ;; Check if this is the end of a function | |
733 | (save-excursion | |
734 | (while (not (or (looking-at pascal-defun-re) (bobp))) | |
735 | (backward-sexp 1) | |
736 | (cond ((looking-at pascal-beg-block-re) | |
737 | (setq nest (1- nest))) | |
738 | ((looking-at pascal-end-block-re) | |
739 | (setq nest (1+ nest))))) | |
740 | (if (bobp) | |
741 | (setq nest 1))) | |
742 | (if (zerop nest) | |
743 | (progn | |
744 | (end-of-line) | |
745 | (delete-horizontal-space) | |
746 | (insert " { ") | |
747 | (let (b e) | |
748 | (save-excursion | |
749 | (setq b (progn (pascal-beg-of-defun) | |
750 | (skip-chars-forward "^ \t") | |
751 | (skip-chars-forward " \t") | |
752 | (point)) | |
753 | e (progn (skip-chars-forward "a-zA-Z0-9_") | |
754 | (point)))) | |
755 | (insert-buffer-substring (current-buffer) b e)) | |
756 | (insert " }")))))))))) | |
1a2b6c52 | 757 | |
da4ce263 RS |
758 | \f |
759 | ||
1a2b6c52 | 760 | ;;; |
da4ce263 RS |
761 | ;;; Indentation |
762 | ;;; | |
763 | (defconst pascal-indent-alist | |
b3608390 CY |
764 | '((block . (+ pascal--extra-indent pascal-indent-level)) |
765 | (case . (+ pascal--extra-indent pascal-case-indent)) | |
766 | (caseblock . pascal--extra-indent) (cpp . 0) | |
767 | (declaration . (+ pascal--extra-indent pascal-indent-level)) | |
da4ce263 | 768 | (paramlist . (pascal-indent-paramlist t)) |
9f92e5d9 | 769 | (comment . (pascal-indent-comment)) |
b3608390 CY |
770 | (defun . pascal--extra-indent) (contexp . pascal--extra-indent) |
771 | (unknown . pascal--extra-indent) (string . 0) (progbeg . 0))) | |
da4ce263 | 772 | |
1a2b6c52 | 773 | (defun pascal-indent-command () |
da4ce263 RS |
774 | "Indent for special part of code." |
775 | (let* ((indent-str (pascal-calculate-indent)) | |
86ac52df | 776 | (type (car indent-str))) |
3a3ee445 RS |
777 | (cond ((and (eq type 'paramlist) |
778 | (or (memq 'all pascal-auto-lineup) | |
779 | (memq 'paramlist pascal-auto-lineup))) | |
da4ce263 RS |
780 | (pascal-indent-paramlist) |
781 | (pascal-indent-paramlist)) | |
3a3ee445 RS |
782 | ((and (eq type 'declaration) |
783 | (or (memq 'all pascal-auto-lineup) | |
784 | (memq 'declaration pascal-auto-lineup))) | |
da4ce263 | 785 | (pascal-indent-declaration)) |
3a3ee445 RS |
786 | ((and (eq type 'case) (not (looking-at "^[ \t]*$")) |
787 | (or (memq 'all pascal-auto-lineup) | |
788 | (memq 'case pascal-auto-lineup))) | |
da4ce263 RS |
789 | (pascal-indent-case))) |
790 | (if (looking-at "[ \t]+$") | |
791 | (skip-chars-forward " \t")))) | |
1a2b6c52 RS |
792 | |
793 | (defun pascal-indent-line () | |
da4ce263 RS |
794 | "Indent current line as a Pascal statement." |
795 | (let* ((indent-str (pascal-calculate-indent)) | |
796 | (type (car indent-str)) | |
b3608390 | 797 | (pascal--extra-indent (car (cdr indent-str)))) |
27b53c17 RS |
798 | ;; Labels should not be indented. |
799 | (if (and (looking-at "^[0-9a-zA-Z]+[ \t]*:[^=]") | |
800 | (not (eq type 'declaration))) | |
da4ce263 RS |
801 | (search-forward ":" nil t)) |
802 | (delete-horizontal-space) | |
27b53c17 RS |
803 | (cond (; Some things should not be indented |
804 | (or (and (eq type 'declaration) (looking-at pascal-declaration-re)) | |
805 | (eq type 'cpp)) | |
806 | ()) | |
807 | (; Other things should have no extra indent | |
808 | (looking-at pascal-noindent-re) | |
b3608390 | 809 | (indent-to pascal--extra-indent)) |
27b53c17 RS |
810 | (; Nested functions should be indented |
811 | (looking-at pascal-defun-re) | |
812 | (if (and pascal-indent-nested-functions | |
813 | (eq type 'defun)) | |
b3608390 CY |
814 | (indent-to (+ pascal--extra-indent pascal-indent-level)) |
815 | (indent-to pascal--extra-indent))) | |
27b53c17 RS |
816 | (; But most lines are treated this way |
817 | (indent-to (eval (cdr (assoc type pascal-indent-alist)))) | |
818 | )))) | |
da4ce263 RS |
819 | |
820 | (defun pascal-calculate-indent () | |
821 | "Calculate the indent of the current Pascal line. | |
822 | Return a list of two elements: (INDENT-TYPE INDENT-LEVEL)." | |
823 | (save-excursion | |
a0bd2457 RS |
824 | (let* ((parse-sexp-ignore-comments t) |
825 | (oldpos (point)) | |
da4ce263 | 826 | (state (save-excursion (parse-partial-sexp (point-min) (point)))) |
9f51be89 | 827 | (nest 0) (par 0) (complete (looking-at "[ \t]*end\\>")) |
27b53c17 RS |
828 | (elsed (looking-at "[ \t]*else\\>")) (funccnt 0) |
829 | (did-func (looking-at "[ \t]*\\(procedure\\|function\\)\\>")) | |
da4ce263 RS |
830 | (type (catch 'nesting |
831 | ;; Check if inside a string, comment or parenthesis | |
832 | (cond ((nth 3 state) (throw 'nesting 'string)) | |
833 | ((nth 4 state) (throw 'nesting 'comment)) | |
834 | ((> (car state) 0) | |
835 | (goto-char (scan-lists (point) -1 (car state))) | |
9f51be89 RS |
836 | (setq par (1+ (current-column)))) |
837 | ((save-excursion (beginning-of-line) | |
838 | (eq (following-char) ?#)) | |
839 | (throw 'nesting 'cpp))) | |
da4ce263 RS |
840 | ;; Loop until correct indent is found |
841 | (while t | |
842 | (backward-sexp 1) | |
9f51be89 RS |
843 | (cond (;--Escape from case statements |
844 | (and (looking-at "[A-Za-z0-9]+[ \t]*:[^=]") | |
845 | (not complete) | |
846 | (save-excursion (skip-chars-backward " \t") | |
847 | (bolp)) | |
848 | (= (save-excursion | |
849 | (end-of-line) (backward-sexp) (point)) | |
850 | (point)) | |
851 | (> (save-excursion (goto-char oldpos) | |
852 | (beginning-of-line) | |
853 | (point)) | |
854 | (point))) | |
855 | (throw 'nesting 'caseblock)) | |
27b53c17 RS |
856 | (;--Beginning of program |
857 | (looking-at pascal-progbeg-re) | |
858 | (throw 'nesting 'progbeg)) | |
859 | (;--No known statements | |
860 | (bobp) | |
861 | (throw 'nesting 'progbeg)) | |
9f51be89 | 862 | (;--Nest block outwards |
da4ce263 RS |
863 | (looking-at pascal-beg-block-re) |
864 | (if (= nest 0) | |
865 | (cond ((looking-at "case\\>") | |
da4ce263 RS |
866 | (throw 'nesting 'case)) |
867 | ((looking-at "record\\>") | |
868 | (throw 'nesting 'declaration)) | |
f6807db3 | 869 | (t (throw 'nesting 'block))) |
27b53c17 RS |
870 | (if (and (looking-at "record\\>") (= nest 1)) |
871 | (setq funccnt (1- funccnt))) | |
da4ce263 RS |
872 | (setq nest (1- nest)))) |
873 | (;--Nest block inwards | |
874 | (looking-at pascal-end-block-re) | |
f6807db3 RS |
875 | (if (and (looking-at "end\\s ") |
876 | elsed (not complete)) | |
877 | (throw 'nesting 'block)) | |
27b53c17 RS |
878 | (if (= nest 0) |
879 | (setq funccnt (1+ funccnt))) | |
da4ce263 RS |
880 | (setq complete t |
881 | nest (1+ nest))) | |
882 | (;--Defun (or parameter list) | |
27b53c17 RS |
883 | (and (looking-at pascal-defun-re) |
884 | (progn (setq funccnt (1- funccnt) | |
885 | did-func t) | |
886 | (or (bolp) (< funccnt 0)))) | |
887 | ;; Prevent searching whole buffer | |
888 | (if (and (bolp) (>= funccnt 0)) | |
889 | (throw 'nesting 'progbeg)) | |
da4ce263 RS |
890 | (if (= 0 par) |
891 | (throw 'nesting 'defun) | |
892 | (setq par 0) | |
893 | (let ((n 0)) | |
894 | (while (re-search-forward | |
895 | "\\(\\<record\\>\\)\\|\\<end\\>" | |
896 | oldpos t) | |
897 | (if (match-end 1) | |
898 | (setq n (1+ n)) (setq n (1- n)))) | |
899 | (if (> n 0) | |
900 | (throw 'nesting 'declaration) | |
901 | (throw 'nesting 'paramlist))))) | |
902 | (;--Declaration part | |
27b53c17 RS |
903 | (and (looking-at pascal-declaration-re) |
904 | (not did-func) | |
905 | (= funccnt 0)) | |
f6807db3 RS |
906 | (if (save-excursion |
907 | (goto-char oldpos) | |
908 | (forward-line -1) | |
909 | (looking-at "^[ \t]*$")) | |
da4ce263 RS |
910 | (throw 'nesting 'unknown) |
911 | (throw 'nesting 'declaration))) | |
912 | (;--If, else or while statement | |
913 | (and (not complete) | |
914 | (looking-at pascal-sub-block-re)) | |
915 | (throw 'nesting 'block)) | |
916 | (;--Found complete statement | |
917 | (save-excursion (forward-sexp 1) | |
918 | (= (following-char) ?\;)) | |
919 | (setq complete t)) | |
da4ce263 | 920 | ))))) |
9f51be89 | 921 | |
da4ce263 | 922 | ;; Return type of block and indent level. |
a1506d29 | 923 | (if (> par 0) ; Unclosed Parenthesis |
da4ce263 RS |
924 | (list 'contexp par) |
925 | (list type (pascal-indent-level)))))) | |
926 | ||
927 | (defun pascal-indent-level () | |
928 | "Return the indent-level the current statement has. | |
929 | Do not count labels, case-statements or records." | |
1a2b6c52 RS |
930 | (save-excursion |
931 | (beginning-of-line) | |
da4ce263 RS |
932 | (if (looking-at "[ \t]*[0-9a-zA-Z]+[ \t]*:[^=]") |
933 | (search-forward ":" nil t) | |
934 | (if (looking-at ".*=[ \t]*record\\>") | |
935 | (search-forward "=" nil t))) | |
1a2b6c52 RS |
936 | (skip-chars-forward " \t") |
937 | (current-column))) | |
938 | ||
9f92e5d9 GM |
939 | (defun pascal-indent-comment () |
940 | "Return indent for current comment." | |
941 | (save-excursion | |
942 | (re-search-backward "\\((\\*\\)\\|{" nil t) | |
943 | (if (match-beginning 1) | |
944 | (1+ (current-column)) | |
945 | (current-column)))) | |
da4ce263 RS |
946 | |
947 | (defun pascal-indent-case () | |
948 | "Indent within case statements." | |
a0bd2457 RS |
949 | (let ((savepos (point-marker)) |
950 | (end (prog2 | |
81aca4f4 RS |
951 | (end-of-line) |
952 | (point-marker) | |
da4ce263 | 953 | (re-search-backward "\\<case\\>" nil t))) |
86ac52df | 954 | (beg (point)) |
b3608390 | 955 | (pascal--extra-indent 0)) |
da4ce263 | 956 | ;; Get right indent |
f80235e3 | 957 | (while (< (point) end) |
a1506d29 | 958 | (if (re-search-forward |
81aca4f4 RS |
959 | "^[ \t]*[^ \t,:]+[ \t]*\\(,[ \t]*[^ \t,:]+[ \t]*\\)*:" |
960 | (marker-position end) 'move) | |
961 | (forward-char -1)) | |
f80235e3 | 962 | (if (< (point) end) |
2e952aac RS |
963 | (progn |
964 | (delete-horizontal-space) | |
b3608390 CY |
965 | (if (> (current-column) pascal--extra-indent) |
966 | (setq pascal--extra-indent (current-column))) | |
2e952aac | 967 | (pascal-end-of-statement)))) |
da4ce263 RS |
968 | (goto-char beg) |
969 | ;; Indent all case statements | |
f80235e3 | 970 | (while (< (point) end) |
81aca4f4 | 971 | (if (re-search-forward |
9f51be89 | 972 | "^[ \t]*[^][ \t,\\.:]+[ \t]*\\(,[ \t]*[^ \t,:]+[ \t]*\\)*:" |
81aca4f4 | 973 | (marker-position end) 'move) |
da4ce263 | 974 | (forward-char -1)) |
b3608390 | 975 | (indent-to (1+ pascal--extra-indent)) |
da4ce263 RS |
976 | (if (/= (following-char) ?:) |
977 | () | |
978 | (forward-char 1) | |
979 | (delete-horizontal-space) | |
3a3ee445 | 980 | (insert " ")) |
3a3ee445 | 981 | (pascal-end-of-statement)) |
a0bd2457 | 982 | (goto-char savepos))) |
da4ce263 RS |
983 | |
984 | (defun pascal-indent-paramlist (&optional arg) | |
985 | "Indent current line in parameterlist. | |
986 | If optional arg is non-nil, just return the | |
987 | indent of the current line in parameterlist." | |
1a2b6c52 | 988 | (save-excursion |
da4ce263 RS |
989 | (let* ((oldpos (point)) |
990 | (stpos (progn (goto-char (scan-lists (point) -1 1)) (point))) | |
991 | (stcol (1+ (current-column))) | |
a1506d29 | 992 | (edpos (progn (pascal-declaration-end) |
3ba6b2ee | 993 | (search-backward ")" (point-at-bol) t) |
da4ce263 RS |
994 | (point))) |
995 | (usevar (re-search-backward "\\<var\\>" stpos t))) | |
996 | (if arg (progn | |
997 | ;; If arg, just return indent | |
998 | (goto-char oldpos) | |
999 | (beginning-of-line) | |
1000 | (if (or (not usevar) (looking-at "[ \t]*var\\>")) | |
1001 | stcol (+ 4 stcol))) | |
1002 | (goto-char stpos) | |
1003 | (forward-char 1) | |
1004 | (delete-horizontal-space) | |
1005 | (if (and usevar (not (looking-at "var\\>"))) | |
1006 | (indent-to (+ 4 stcol))) | |
1007 | (pascal-indent-declaration nil stpos edpos))))) | |
1008 | ||
1009 | (defun pascal-indent-declaration (&optional arg start end) | |
1010 | "Indent current lines as declaration, lining up the `:'s or `='s." | |
1011 | (let ((pos (point-marker))) | |
1012 | (if (and (not (or arg start)) (not (pascal-declaration-beg))) | |
1013 | () | |
a1506d29 | 1014 | (let ((lineup (if (or (looking-at "\\<var\\>\\|\\<record\\>") arg start) |
da4ce263 RS |
1015 | ":" "=")) |
1016 | (stpos (if start start | |
1017 | (forward-word 2) (backward-word 1) (point))) | |
1018 | (edpos (set-marker (make-marker) | |
1019 | (if end end | |
1020 | (max (progn (pascal-declaration-end) | |
1021 | (point)) | |
1022 | pos)))) | |
b3608390 | 1023 | pascal--extra-indent) |
da4ce263 RS |
1024 | |
1025 | (goto-char stpos) | |
1026 | ;; Indent lines in record block | |
1027 | (if arg | |
f80235e3 | 1028 | (while (<= (point) edpos) |
da4ce263 RS |
1029 | (beginning-of-line) |
1030 | (delete-horizontal-space) | |
1031 | (if (looking-at "end\\>") | |
1032 | (indent-to arg) | |
1033 | (indent-to (+ arg pascal-indent-level))) | |
1034 | (forward-line 1))) | |
1035 | ||
1036 | ;; Do lineup | |
b3608390 | 1037 | (setq pascal--extra-indent (pascal-get-lineup-indent stpos edpos lineup)) |
da4ce263 | 1038 | (goto-char stpos) |
f80235e3 | 1039 | (while (and (<= (point) edpos) (not (eobp))) |
3ba6b2ee | 1040 | (if (search-forward lineup (point-at-eol) 'move) |
da4ce263 RS |
1041 | (forward-char -1)) |
1042 | (delete-horizontal-space) | |
b3608390 | 1043 | (indent-to pascal--extra-indent) |
da4ce263 RS |
1044 | (if (not (looking-at lineup)) |
1045 | (forward-line 1) ; No more indent if there is no : or = | |
1046 | (forward-char 1) | |
1047 | (delete-horizontal-space) | |
1048 | (insert " ") | |
1049 | ;; Indent record block | |
1050 | (if (looking-at "record\\>") | |
1051 | (pascal-indent-declaration (current-column))) | |
1052 | (forward-line 1))))) | |
1053 | ||
1054 | ;; If arg - move point | |
1055 | (if arg (forward-line -1) | |
f80235e3 | 1056 | (goto-char pos)))) |
da4ce263 RS |
1057 | |
1058 | ; "Return the indent level that will line up several lines within the region | |
1059 | ;from b to e nicely. The lineup string is str." | |
1060 | (defun pascal-get-lineup-indent (b e str) | |
1061 | (save-excursion | |
b3608390 | 1062 | (let ((pascal--extra-indent 0) |
27b53c17 | 1063 | (reg (concat str "\\|\\(\\<record\\>\\)\\|" pascal-defun-re))) |
da4ce263 RS |
1064 | (goto-char b) |
1065 | ;; Get rightmost position | |
1066 | (while (< (point) e) | |
3ba6b2ee | 1067 | (and (re-search-forward reg (min e (point-at-eol 2)) 'move) |
27b53c17 RS |
1068 | (cond ((match-beginning 1) |
1069 | ;; Skip record blocks | |
1070 | (pascal-declaration-end)) | |
1071 | ((match-beginning 2) | |
1072 | ;; We have entered a new procedure. Exit. | |
1073 | (goto-char e)) | |
1074 | (t | |
1075 | (goto-char (match-beginning 0)) | |
1076 | (skip-chars-backward " \t") | |
b3608390 CY |
1077 | (if (> (current-column) pascal--extra-indent) |
1078 | (setq pascal--extra-indent (current-column))) | |
27b53c17 RS |
1079 | (goto-char (match-end 0)) |
1080 | (end-of-line) | |
1081 | )))) | |
da4ce263 | 1082 | ;; In case no lineup was found |
b3608390 CY |
1083 | (if (> pascal--extra-indent 0) |
1084 | (1+ pascal--extra-indent) | |
da4ce263 RS |
1085 | ;; No lineup-string found |
1086 | (goto-char b) | |
1087 | (end-of-line) | |
1088 | (skip-chars-backward " \t") | |
1089 | (1+ (current-column)))))) | |
a1506d29 | 1090 | |
da4ce263 RS |
1091 | \f |
1092 | ||
1093 | ;;; | |
1094 | ;;; Completion | |
9566dc15 | 1095 | |
da4ce263 RS |
1096 | (defun pascal-string-diff (str1 str2) |
1097 | "Return index of first letter where STR1 and STR2 differs." | |
1098 | (catch 'done | |
1099 | (let ((diff 0)) | |
1100 | (while t | |
1101 | (if (or (> (1+ diff) (length str1)) | |
1102 | (> (1+ diff) (length str2))) | |
1103 | (throw 'done diff)) | |
1104 | (or (equal (aref str1 diff) (aref str2 diff)) | |
1105 | (throw 'done diff)) | |
1106 | (setq diff (1+ diff)))))) | |
1107 | ||
1108 | ;; Calculate all possible completions for functions if argument is `function', | |
1109 | ;; completions for procedures if argument is `procedure' or both functions and | |
1110 | ;; procedures otherwise. | |
1111 | ||
601a9508 | 1112 | (defun pascal-func-completion (type pascal-str) |
da4ce263 | 1113 | ;; Build regular expression for function/procedure names |
601a9508 SM |
1114 | (save-excursion |
1115 | (if (string= pascal-str "") | |
1116 | (setq pascal-str "[a-zA-Z_]")) | |
1117 | (let ((pascal-str (concat (cond | |
1118 | ((eq type 'procedure) "\\<\\(procedure\\)\\s +") | |
1119 | ((eq type 'function) "\\<\\(function\\)\\s +") | |
1120 | (t "\\<\\(function\\|procedure\\)\\s +")) | |
1121 | "\\<\\(" pascal-str "[a-zA-Z0-9_.]*\\)\\>")) | |
1122 | (pascal-all ()) | |
1123 | match) | |
3bb8691b | 1124 | |
601a9508 SM |
1125 | (if (not (looking-at "\\<\\(function\\|procedure\\)\\>")) |
1126 | (re-search-backward "\\<\\(function\\|procedure\\)\\>" nil t)) | |
1127 | (forward-char 1) | |
1128 | ||
1129 | ;; Search through all reachable functions | |
1130 | (while (pascal-beg-of-defun) | |
3ba6b2ee | 1131 | (if (re-search-forward pascal-str (point-at-eol) t) |
601a9508 SM |
1132 | (progn (setq match (buffer-substring (match-beginning 2) |
1133 | (match-end 2))) | |
1134 | (push match pascal-all))) | |
1135 | (goto-char (match-beginning 0))) | |
1136 | ||
1137 | pascal-all))) | |
1138 | ||
1139 | (defun pascal-get-completion-decl (pascal-str) | |
da4ce263 | 1140 | ;; Macro for searching through current declaration (var, type or const) |
f80235e3 | 1141 | ;; for matches of `str' and adding the occurrence to `all' |
da4ce263 RS |
1142 | (let ((end (save-excursion (pascal-declaration-end) |
1143 | (point))) | |
601a9508 | 1144 | (pascal-all ()) |
da4ce263 RS |
1145 | match) |
1146 | ;; Traverse lines | |
1147 | (while (< (point) end) | |
3ba6b2ee | 1148 | (if (re-search-forward "[:=]" (point-at-eol) t) |
da4ce263 | 1149 | ;; Traverse current line |
a1506d29 JB |
1150 | (while (and (re-search-backward |
1151 | (concat "\\((\\|\\<\\(var\\|type\\|const\\)\\>\\)\\|" | |
da4ce263 | 1152 | pascal-symbol-re) |
3ba6b2ee | 1153 | (point-at-bol) t) |
da4ce263 RS |
1154 | (not (match-end 1))) |
1155 | (setq match (buffer-substring (match-beginning 0) (match-end 0))) | |
9566dc15 | 1156 | (if (string-match (concat "\\<" pascal-str) match) |
601a9508 | 1157 | (push match pascal-all)))) |
3ba6b2ee | 1158 | (if (re-search-forward "\\<record\\>" (point-at-eol) t) |
da4ce263 | 1159 | (pascal-declaration-end) |
601a9508 | 1160 | (forward-line 1))) |
da4ce263 | 1161 | |
601a9508 SM |
1162 | pascal-all)) |
1163 | ||
1164 | (defun pascal-type-completion (pascal-str) | |
da4ce263 RS |
1165 | "Calculate all possible completions for types." |
1166 | (let ((start (point)) | |
601a9508 | 1167 | (pascal-all ()) |
da4ce263 RS |
1168 | goon) |
1169 | ;; Search for all reachable type declarations | |
1170 | (while (or (pascal-beg-of-defun) | |
1171 | (setq goon (not goon))) | |
1172 | (save-excursion | |
1173 | (if (and (< start (prog1 (save-excursion (pascal-end-of-defun) | |
1174 | (point)) | |
1175 | (forward-char 1))) | |
1176 | (re-search-forward | |
3a3ee445 | 1177 | "\\<type\\>\\|\\<\\(begin\\|function\\|procedure\\)\\>" |
da4ce263 RS |
1178 | start t) |
1179 | (not (match-end 1))) | |
1180 | ;; Check current type declaration | |
601a9508 SM |
1181 | (setq pascal-all |
1182 | (nconc (pascal-get-completion-decl pascal-str) | |
1183 | pascal-all))))) | |
1184 | ||
1185 | pascal-all)) | |
da4ce263 | 1186 | |
601a9508 | 1187 | (defun pascal-var-completion (prefix) |
da4ce263 | 1188 | "Calculate all possible completions for variables (or constants)." |
601a9508 SM |
1189 | (save-excursion |
1190 | (let ((start (point)) | |
1191 | (pascal-all ()) | |
1192 | goon twice) | |
1193 | ;; Search for all reachable var declarations | |
1194 | (while (or (pascal-beg-of-defun) | |
1195 | (setq goon (not goon))) | |
1196 | (save-excursion | |
1197 | (if (> start (prog1 (save-excursion (pascal-end-of-defun) | |
1198 | (point)))) | |
1199 | () ; Declarations not reachable | |
3ba6b2ee | 1200 | (if (search-forward "(" (point-at-eol) t) |
601a9508 SM |
1201 | ;; Check parameterlist |
1202 | ;; FIXME: pascal-get-completion-decl doesn't understand | |
1203 | ;; the var declarations in parameter lists :-( | |
1204 | (setq pascal-all | |
1205 | (nconc (pascal-get-completion-decl prefix) | |
1206 | pascal-all))) | |
1207 | (setq twice 2) | |
1208 | (while (>= (setq twice (1- twice)) 0) | |
1209 | (cond | |
1210 | ((and (re-search-forward | |
1211 | (concat "\\<\\(var\\|const\\)\\>\\|" | |
1212 | "\\<\\(begin\\|function\\|procedure\\)\\>") | |
1213 | start t) | |
1214 | (not (match-end 2))) | |
1215 | ;; Check var/const declarations | |
1216 | (setq pascal-all | |
1217 | (nconc (pascal-get-completion-decl prefix) | |
1218 | pascal-all))) | |
1219 | ((match-end 2) | |
1220 | (setq twice 0))))))) | |
1221 | pascal-all))) | |
1222 | ||
1223 | ||
1224 | (defun pascal-keyword-completion (keyword-list pascal-str) | |
da4ce263 | 1225 | "Give list of all possible completions of keywords in KEYWORD-LIST." |
601a9508 SM |
1226 | (let ((pascal-all ())) |
1227 | (dolist (s keyword-list) | |
1228 | (if (string-match (concat "\\<" pascal-str) s) | |
1229 | (push s pascal-all))) | |
1230 | pascal-all)) | |
da4ce263 RS |
1231 | |
1232 | ;; Function passed to completing-read, try-completion or | |
1233 | ;; all-completions to get completion on STR. If predicate is non-nil, | |
1234 | ;; it must be a function to be called for every match to check if this | |
1235 | ;; should really be a match. If flag is t, the function returns a list | |
1236 | ;; of all possible completions. If it is nil it returns a string, the | |
1237 | ;; longest possible completion, or t if STR is an exact match. If flag | |
1238 | ;; is 'lambda, the function returns t if STR is an exact match, nil | |
1239 | ;; otherwise. | |
1240 | ||
601a9508 | 1241 | (defvar pascal-completion-cache nil) |
da4ce263 | 1242 | |
601a9508 SM |
1243 | (defun pascal-completion (pascal-str pascal-pred pascal-flag) |
1244 | (let ((all (car pascal-completion-cache))) | |
1245 | ;; Check the cache's freshness. | |
1246 | (unless (and pascal-completion-cache | |
1247 | (string-prefix-p (nth 1 pascal-completion-cache) pascal-str) | |
1248 | (eq (current-buffer) (nth 2 pascal-completion-cache)) | |
1249 | (eq (field-beginning) (nth 3 pascal-completion-cache))) | |
da4ce263 | 1250 | (let ((state (car (pascal-calculate-indent)))) |
601a9508 SM |
1251 | (setq all |
1252 | ;; Determine what should be completed | |
1253 | (cond | |
1254 | ( ;--Within a declaration or parameterlist | |
1255 | (or (eq state 'declaration) (eq state 'paramlist) | |
1256 | (and (eq state 'defun) | |
1257 | (save-excursion | |
3ba6b2ee | 1258 | (re-search-backward ")[ \t]*:" (point-at-bol) t)))) |
601a9508 SM |
1259 | (if (or (eq state 'paramlist) (eq state 'defun)) |
1260 | (pascal-beg-of-defun)) | |
1261 | (nconc | |
1262 | (pascal-type-completion pascal-str) | |
1263 | (pascal-keyword-completion pascal-type-keywords pascal-str))) | |
1264 | ( ;--Starting a new statement | |
1265 | (and (not (eq state 'contexp)) | |
1266 | (save-excursion | |
1267 | (skip-chars-backward "a-zA-Z0-9_.") | |
1268 | (backward-sexp 1) | |
1269 | (or (looking-at pascal-nosemi-re) | |
1270 | (progn | |
1271 | (forward-sexp 1) | |
1272 | (looking-at "\\s *\\(;\\|:[^=]\\)"))))) | |
1273 | (nconc | |
1274 | (pascal-var-completion pascal-str) | |
1275 | (pascal-func-completion 'procedure pascal-str) | |
1276 | (pascal-keyword-completion pascal-start-keywords pascal-str))) | |
1277 | (t ;--Anywhere else | |
1278 | (nconc | |
1279 | (pascal-var-completion pascal-str) | |
1280 | (pascal-func-completion 'function pascal-str) | |
1281 | (pascal-keyword-completion pascal-separator-keywords | |
1282 | pascal-str))))) | |
1283 | ||
1284 | (setq pascal-completion-cache | |
1285 | (list all pascal-str (current-buffer) (field-beginning))))) | |
1286 | ||
1287 | ;; Now we have built a list of all matches. Give response to caller | |
1288 | (complete-with-action pascal-flag all pascal-str pascal-pred))) | |
da4ce263 RS |
1289 | |
1290 | (defvar pascal-last-word-numb 0) | |
1291 | (defvar pascal-last-word-shown nil) | |
1292 | (defvar pascal-last-completions nil) | |
1293 | ||
bcd70d97 | 1294 | (defun pascal-completions-at-point () |
da4ce263 | 1295 | (let* ((b (save-excursion (skip-chars-backward "a-zA-Z0-9_") (point))) |
601a9508 | 1296 | (e (save-excursion (skip-chars-forward "a-zA-Z0-9_") (point)))) |
bcd70d97 SM |
1297 | (when (> e b) |
1298 | (list b e #'pascal-completion)))) | |
da4ce263 | 1299 | |
bcd70d97 SM |
1300 | (define-obsolete-function-alias 'pascal-complete-word |
1301 | 'completion-at-point "24.1") | |
1302 | ||
1303 | (define-obsolete-function-alias 'pascal-show-completions | |
1304 | 'completion-help-at-point "24.1") | |
da4ce263 RS |
1305 | |
1306 | ||
1307 | (defun pascal-get-default-symbol () | |
1308 | "Return symbol around current point as a string." | |
1309 | (save-excursion | |
1310 | (buffer-substring (progn | |
1311 | (skip-chars-backward " \t") | |
1312 | (skip-chars-backward "a-zA-Z0-9_") | |
1313 | (point)) | |
1314 | (progn | |
1315 | (skip-chars-forward "a-zA-Z0-9_") | |
1316 | (point))))) | |
1317 | ||
1318 | (defun pascal-build-defun-re (str &optional arg) | |
1319 | "Return function/procedure starting with STR as regular expression. | |
1320 | With optional second arg non-nil, STR is the complete name of the instruction." | |
1321 | (if arg | |
1322 | (concat "^\\(function\\|procedure\\)[ \t]+\\(" str "\\)\\>") | |
1323 | (concat "^\\(function\\|procedure\\)[ \t]+\\(" str "[a-zA-Z0-9_]*\\)\\>"))) | |
1324 | ||
1325 | ;; Function passed to completing-read, try-completion or | |
1326 | ;; all-completions to get completion on any function name. If | |
1327 | ;; predicate is non-nil, it must be a function to be called for every | |
1328 | ;; match to check if this should really be a match. If flag is t, the | |
1329 | ;; function returns a list of all possible completions. If it is nil | |
1330 | ;; it returns a string, the longest possible completion, or t if STR | |
1331 | ;; is an exact match. If flag is 'lambda, the function returns t if | |
1332 | ;; STR is an exact match, nil otherwise. | |
1333 | ||
9566dc15 | 1334 | (defun pascal-comp-defun (pascal-str pascal-pred pascal-flag) |
da4ce263 | 1335 | (save-excursion |
601a9508 SM |
1336 | (let ((pascal-all nil)) |
1337 | ||
1338 | ;; Build regular expression for functions | |
1339 | (let ((pascal-str (pascal-build-defun-re (if (string= pascal-str "") | |
1340 | "[a-zA-Z_]" | |
1341 | pascal-str)))) | |
1342 | (goto-char (point-min)) | |
3bb8691b | 1343 | |
601a9508 SM |
1344 | ;; Build a list of all possible completions |
1345 | (while (re-search-forward pascal-str nil t) | |
1346 | (push (match-string 2) pascal-all))) | |
da4ce263 RS |
1347 | |
1348 | ;; Now we have built a list of all matches. Give response to caller | |
601a9508 | 1349 | (complete-with-action pascal-flag pascal-all pascal-str pascal-pred)))) |
da4ce263 RS |
1350 | |
1351 | (defun pascal-goto-defun () | |
1352 | "Move to specified Pascal function/procedure. | |
1353 | The default is a name found in the buffer around point." | |
1354 | (interactive) | |
1355 | (let* ((default (pascal-get-default-symbol)) | |
da4ce263 RS |
1356 | (default (if (pascal-comp-defun default nil 'lambda) |
1357 | default "")) | |
3bb8691b | 1358 | (label |
e95a67dc | 1359 | ;; Do completion with default. |
601a9508 SM |
1360 | (completing-read (if (not (string= default "")) |
1361 | (concat "Label (default " default "): ") | |
1362 | "Label: ") | |
1363 | ;; Complete with the defuns found in the | |
1364 | ;; current-buffer. | |
e95a67dc | 1365 | (let ((buf (current-buffer))) |
601a9508 SM |
1366 | (lambda (s p a) |
1367 | (with-current-buffer buf | |
1368 | (pascal-comp-defun s p a)))) | |
1369 | nil t ""))) | |
e95a67dc | 1370 | ;; If there was no response on prompt, use default value. |
da4ce263 RS |
1371 | (if (string= label "") |
1372 | (setq label default)) | |
e95a67dc | 1373 | ;; Goto right place in buffer if label is not an empty string. |
da4ce263 RS |
1374 | (or (string= label "") |
1375 | (progn | |
1376 | (goto-char (point-min)) | |
1377 | (re-search-forward (pascal-build-defun-re label t)) | |
1378 | (beginning-of-line))))) | |
1379 | ||
1380 | \f | |
1381 | ||
1382 | ;;; | |
1383 | ;;; Pascal-outline-mode | |
1384 | ;;; | |
86ac52df SM |
1385 | (defvar pascal-outline-map |
1386 | (let ((map (make-sparse-keymap))) | |
1387 | (if (fboundp 'set-keymap-name) | |
1388 | (set-keymap-name pascal-outline-map 'pascal-outline-map)) | |
1389 | (define-key map "\M-\C-a" 'pascal-outline-prev-defun) | |
1390 | (define-key map "\M-\C-e" 'pascal-outline-next-defun) | |
1391 | (define-key map "\C-c\C-d" 'pascal-outline-goto-defun) | |
1392 | (define-key map "\C-c\C-s" 'pascal-show-all) | |
1393 | (define-key map "\C-c\C-h" 'pascal-hide-other-defuns) | |
1394 | map) | |
1395 | "Keymap used in Pascal Outline mode.") | |
1396 | ||
5443c9b7 | 1397 | (define-obsolete-function-alias 'pascal-outline 'pascal-outline-mode "22.1") |
86ac52df | 1398 | (define-minor-mode pascal-outline-mode |
da4ce263 | 1399 | "Outline-line minor mode for Pascal mode. |
e1ac4066 GM |
1400 | With a prefix argument ARG, enable the mode if ARG is positive, |
1401 | and disable it otherwise. If called from Lisp, enable the mode | |
1402 | if ARG is omitted or nil. | |
1403 | ||
1404 | When enabled, portions of the text being edited may be made | |
1405 | invisible. \\<pascal-outline-map> | |
da4ce263 RS |
1406 | |
1407 | Pascal Outline mode provides some additional commands. | |
1408 | ||
1409 | \\[pascal-outline-prev-defun]\ | |
1410 | \t- Move to previous function/procedure, hiding everything else. | |
1411 | \\[pascal-outline-next-defun]\ | |
1412 | \t- Move to next function/procedure, hiding everything else. | |
1413 | \\[pascal-outline-goto-defun]\ | |
1414 | \t- Goto function/procedure prompted for in minibuffer, | |
1415 | \t hide all other functions. | |
1416 | \\[pascal-show-all]\t- Show the whole buffer. | |
1417 | \\[pascal-hide-other-defuns]\ | |
1418 | \t- Hide everything but the current function (function under the cursor). | |
1419 | \\[pascal-outline]\t- Leave pascal-outline-mode." | |
86ac52df SM |
1420 | :init-value nil :lighter " Outl" :keymap pascal-outline-map |
1421 | (add-to-invisibility-spec '(pascal . t)) | |
1422 | (unless pascal-outline-mode | |
1423 | (pascal-show-all))) | |
da4ce263 | 1424 | |
3672149f | 1425 | (defun pascal-outline-change (b e hide) |
86ac52df SM |
1426 | (when (> e b) |
1427 | ;; We could try and optimize this in the case where the region is | |
1428 | ;; already hidden. But I'm not sure it's worth the trouble. | |
1429 | (remove-overlays b e 'invisible 'pascal) | |
3672149f | 1430 | (when hide |
86ac52df SM |
1431 | (let ((ol (make-overlay b e nil t nil))) |
1432 | (overlay-put ol 'invisible 'pascal) | |
1433 | (overlay-put ol 'evaporate t))))) | |
da4ce263 RS |
1434 | |
1435 | (defun pascal-show-all () | |
1436 | "Show all of the text in the buffer." | |
1437 | (interactive) | |
3672149f | 1438 | (pascal-outline-change (point-min) (point-max) nil)) |
da4ce263 RS |
1439 | |
1440 | (defun pascal-hide-other-defuns () | |
1441 | "Show only the current defun." | |
1442 | (interactive) | |
1443 | (save-excursion | |
1444 | (let ((beg (progn (if (not (looking-at "\\(function\\|procedure\\)\\>")) | |
1445 | (pascal-beg-of-defun)) | |
3672149f | 1446 | (line-beginning-position))) |
da4ce263 RS |
1447 | (end (progn (pascal-end-of-defun) |
1448 | (backward-sexp 1) | |
3672149f | 1449 | (line-beginning-position 2))) |
da4ce263 | 1450 | (opoint (point-min))) |
3672149f SM |
1451 | ;; BEG at BOL. |
1452 | ;; OPOINT at EOL. | |
1453 | ;; END at BOL. | |
da4ce263 RS |
1454 | (goto-char (point-min)) |
1455 | ||
1456 | ;; Hide all functions before current function | |
3672149f SM |
1457 | (while (re-search-forward "^[ \t]*\\(function\\|procedure\\)\\>" |
1458 | beg 'move) | |
1459 | (pascal-outline-change opoint (line-end-position 0) t) | |
1460 | (setq opoint (line-end-position)) | |
da4ce263 RS |
1461 | ;; Functions may be nested |
1462 | (if (> (progn (pascal-end-of-defun) (point)) beg) | |
1463 | (goto-char opoint))) | |
1464 | (if (> beg opoint) | |
3672149f | 1465 | (pascal-outline-change opoint (1- beg) t)) |
da4ce263 RS |
1466 | |
1467 | ;; Show current function | |
3672149f | 1468 | (pascal-outline-change (1- beg) end nil) |
da4ce263 RS |
1469 | ;; Hide nested functions |
1470 | (forward-char 1) | |
1471 | (while (re-search-forward "^\\(function\\|procedure\\)\\>" end 'move) | |
3672149f | 1472 | (setq opoint (line-end-position)) |
da4ce263 | 1473 | (pascal-end-of-defun) |
3672149f | 1474 | (pascal-outline-change opoint (line-end-position) t)) |
da4ce263 RS |
1475 | |
1476 | (goto-char end) | |
1477 | (setq opoint end) | |
1478 | ||
1479 | ;; Hide all function after current function | |
1480 | (while (re-search-forward "^\\(function\\|procedure\\)\\>" nil 'move) | |
3672149f SM |
1481 | (pascal-outline-change opoint (line-end-position 0) t) |
1482 | (setq opoint (line-end-position)) | |
da4ce263 | 1483 | (pascal-end-of-defun)) |
3672149f | 1484 | (pascal-outline-change opoint (point-max) t) |
da4ce263 RS |
1485 | |
1486 | ;; Hide main program | |
1487 | (if (< (progn (forward-line -1) (point)) end) | |
1a2b6c52 | 1488 | (progn |
da4ce263 RS |
1489 | (goto-char beg) |
1490 | (pascal-end-of-defun) | |
1491 | (backward-sexp 1) | |
3672149f | 1492 | (pascal-outline-change (line-end-position) (point-max) t)))))) |
1a2b6c52 | 1493 | |
da4ce263 RS |
1494 | (defun pascal-outline-next-defun () |
1495 | "Move to next function/procedure, hiding all others." | |
1496 | (interactive) | |
1497 | (pascal-end-of-defun) | |
1498 | (pascal-hide-other-defuns)) | |
1499 | ||
1500 | (defun pascal-outline-prev-defun () | |
1501 | "Move to previous function/procedure, hiding all others." | |
1502 | (interactive) | |
1503 | (pascal-beg-of-defun) | |
1504 | (pascal-hide-other-defuns)) | |
1505 | ||
1506 | (defun pascal-outline-goto-defun () | |
1507 | "Move to specified function/procedure, hiding all others." | |
1508 | (interactive) | |
1509 | (pascal-goto-defun) | |
1510 | (pascal-hide-other-defuns)) | |
1a2b6c52 | 1511 | |
896546cd RS |
1512 | (provide 'pascal) |
1513 | ||
da4ce263 | 1514 | ;;; pascal.el ends here |