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e8af40ee | 1 | ;;; scheme.el --- Scheme (and DSSSL) editing mode |
c88ab9ce | 2 | |
034babe1 | 3 | ;; Copyright (C) 1986, 1987, 1988, 1997, 1998, 2001, 2002, 2003, 2004, 2005 |
150bbae7 | 4 | ;; Free Software Foundation, Inc. |
3a801d0c | 5 | |
4228277d | 6 | ;; Author: Bill Rozas <jinx@martigny.ai.mit.edu> |
d575e99d | 7 | ;; Adapted-by: Dave Love <d.love@dl.ac.uk> |
d7b4d18f | 8 | ;; Keywords: languages, lisp |
e5167999 | 9 | |
ac5b21ac RS |
10 | ;; This file is part of GNU Emacs. |
11 | ||
12 | ;; GNU Emacs is free software; you can redistribute it and/or modify | |
13 | ;; it under the terms of the GNU General Public License as published by | |
e5167999 | 14 | ;; the Free Software Foundation; either version 2, or (at your option) |
ac5b21ac RS |
15 | ;; any later version. |
16 | ||
17 | ;; GNU Emacs is distributed in the hope that it will be useful, | |
18 | ;; but WITHOUT ANY WARRANTY; without even the implied warranty of | |
19 | ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
20 | ;; GNU General Public License for more details. | |
21 | ||
22 | ;; You should have received a copy of the GNU General Public License | |
b578f267 | 23 | ;; along with GNU Emacs; see the file COPYING. If not, write to the |
3a35cf56 LK |
24 | ;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
25 | ;; Boston, MA 02110-1301, USA. | |
ac5b21ac | 26 | |
e5167999 | 27 | ;;; Commentary: |
ac5b21ac | 28 | |
1367ff3a RS |
29 | ;; The major mode for editing Scheme-type Lisp code, very similar to |
30 | ;; the Lisp mode documented in the Emacs manual. `dsssl-mode' is a | |
31 | ;; variant of scheme-mode for editing DSSSL specifications for SGML | |
32 | ;; documents. [As of Apr 1997, some pointers for DSSSL may be found, | |
33 | ;; for instance, at <URL:http://www.sil.org/sgml/related.html#dsssl>.] | |
34 | ;; All these Lisp-ish modes vary basically in details of the language | |
35 | ;; syntax they highlight/indent/index, but dsssl-mode uses "^;;;" as | |
36 | ;; the page-delimiter since ^L isn't normally a legal SGML character. | |
37 | ;; | |
38 | ;; For interacting with a Scheme interpreter See also `run-scheme' in | |
39 | ;; the `cmuscheme' package and also the implementation-specific | |
40 | ;; `xscheme' package. | |
ac5b21ac | 41 | |
2b20743d DL |
42 | ;; Here's a recipe to generate a TAGS file for DSSSL, by the way: |
43 | ;; etags --lang=scheme --regex='/[ \t]*(\(mode\|element\)[ \t | |
44 | ;; ]+\([^ \t( | |
45 | ;; ]+\)/\2/' --regex='/[ \t]*(element[ \t | |
46 | ;; ]*([^)]+[ \t | |
47 | ;; ]+\([^)]+\)[ \t | |
48 | ;; ]*)/\1/' --regex='/(declare[^ \t | |
49 | ;; ]*[ \t | |
50 | ;; ]+\([^ \t | |
51 | ;; ]+\)/\1/' "$@" | |
52 | ||
e5167999 | 53 | ;;; Code: |
ac5b21ac | 54 | \f |
1367ff3a RS |
55 | (require 'lisp-mode) |
56 | ||
9fce950d SM |
57 | (defvar scheme-mode-syntax-table |
58 | (let ((st (make-syntax-table)) | |
59 | (i 0)) | |
c676c4e5 TTN |
60 | |
61 | ;; Default is atom-constituent. | |
62 | (while (< i 256) | |
63 | (modify-syntax-entry i "_ " st) | |
64 | (setq i (1+ i))) | |
65 | ||
66 | ;; Word components. | |
67 | (setq i ?0) | |
68 | (while (<= i ?9) | |
69 | (modify-syntax-entry i "w " st) | |
70 | (setq i (1+ i))) | |
71 | (setq i ?A) | |
72 | (while (<= i ?Z) | |
73 | (modify-syntax-entry i "w " st) | |
74 | (setq i (1+ i))) | |
75 | (setq i ?a) | |
76 | (while (<= i ?z) | |
77 | (modify-syntax-entry i "w " st) | |
78 | (setq i (1+ i))) | |
79 | ||
80 | ;; Whitespace | |
81 | (modify-syntax-entry ?\t " " st) | |
82 | (modify-syntax-entry ?\n "> " st) | |
83 | (modify-syntax-entry ?\f " " st) | |
84 | (modify-syntax-entry ?\r " " st) | |
347a0b69 | 85 | (modify-syntax-entry ?\s " " st) |
c676c4e5 TTN |
86 | |
87 | ;; These characters are delimiters but otherwise undefined. | |
88 | ;; Brackets and braces balance for editing convenience. | |
89 | (modify-syntax-entry ?\[ "(] " st) | |
90 | (modify-syntax-entry ?\] ")[ " st) | |
91 | (modify-syntax-entry ?{ "(} " st) | |
92 | (modify-syntax-entry ?} "){ " st) | |
f17ae68f SM |
93 | (modify-syntax-entry ?\| "\" 23bn" st) |
94 | ;; Guile allows #! ... !# comments. | |
95 | ;; But SRFI-22 defines the comment as #!...\n instead. | |
96 | ;; Also Guile says that the !# should be on a line of its own. | |
97 | ;; It's too difficult to get it right, for too little benefit. | |
98 | ;; (modify-syntax-entry ?! "_ 2" st) | |
c676c4e5 TTN |
99 | |
100 | ;; Other atom delimiters | |
101 | (modify-syntax-entry ?\( "() " st) | |
102 | (modify-syntax-entry ?\) ")( " st) | |
103 | (modify-syntax-entry ?\; "< " st) | |
104 | (modify-syntax-entry ?\" "\" " st) | |
0a08535e RS |
105 | (modify-syntax-entry ?' "' " st) |
106 | (modify-syntax-entry ?` "' " st) | |
c676c4e5 TTN |
107 | |
108 | ;; Special characters | |
0a08535e RS |
109 | (modify-syntax-entry ?, "' " st) |
110 | (modify-syntax-entry ?@ "' " st) | |
f17ae68f | 111 | (modify-syntax-entry ?# "' 14b" st) |
c676c4e5 | 112 | (modify-syntax-entry ?\\ "\\ " st) |
9fce950d | 113 | st)) |
ac5b21ac | 114 | \f |
d17f0db5 | 115 | (defvar scheme-mode-abbrev-table nil) |
ac5b21ac RS |
116 | (define-abbrev-table 'scheme-mode-abbrev-table ()) |
117 | ||
1367ff3a | 118 | (defvar scheme-imenu-generic-expression |
d17f0db5 | 119 | '((nil |
d575e99d | 120 | "^(define\\(\\|-\\(generic\\(\\|-procedure\\)\\|method\\)\\)*\\s-+(?\\(\\sw+\\)" 4) |
d17f0db5 | 121 | ("Types" |
d575e99d | 122 | "^(define-class\\s-+(?\\(\\sw+\\)" 1) |
93a7d76f | 123 | ("Macros" |
d575e99d | 124 | "^(\\(defmacro\\|define-macro\\|define-syntax\\)\\s-+(?\\(\\sw+\\)" 2)) |
1367ff3a RS |
125 | "Imenu generic expression for Scheme mode. See `imenu-generic-expression'.") |
126 | ||
ac5b21ac RS |
127 | (defun scheme-mode-variables () |
128 | (set-syntax-table scheme-mode-syntax-table) | |
129 | (setq local-abbrev-table scheme-mode-abbrev-table) | |
130 | (make-local-variable 'paragraph-start) | |
53e84345 | 131 | (setq paragraph-start (concat "$\\|" page-delimiter)) |
ac5b21ac RS |
132 | (make-local-variable 'paragraph-separate) |
133 | (setq paragraph-separate paragraph-start) | |
134 | (make-local-variable 'paragraph-ignore-fill-prefix) | |
135 | (setq paragraph-ignore-fill-prefix t) | |
1367ff3a RS |
136 | (make-local-variable 'fill-paragraph-function) |
137 | (setq fill-paragraph-function 'lisp-fill-paragraph) | |
138 | ;; Adaptive fill mode gets in the way of auto-fill, | |
139 | ;; and should make no difference for explicit fill | |
140 | ;; because lisp-fill-paragraph should do the job. | |
141 | (make-local-variable 'adaptive-fill-mode) | |
142 | (setq adaptive-fill-mode nil) | |
761aea38 RS |
143 | (make-local-variable 'normal-auto-fill-function) |
144 | (setq normal-auto-fill-function 'lisp-mode-auto-fill) | |
ac5b21ac | 145 | (make-local-variable 'indent-line-function) |
1367ff3a | 146 | (setq indent-line-function 'lisp-indent-line) |
446e6a14 KH |
147 | (make-local-variable 'parse-sexp-ignore-comments) |
148 | (setq parse-sexp-ignore-comments t) | |
1367ff3a RS |
149 | (make-local-variable 'outline-regexp) |
150 | (setq outline-regexp ";;; \\|(....") | |
ac5b21ac RS |
151 | (make-local-variable 'comment-start) |
152 | (setq comment-start ";") | |
150bbae7 | 153 | (set (make-local-variable 'comment-add) 1) |
ac5b21ac | 154 | (make-local-variable 'comment-start-skip) |
a24c42f7 MB |
155 | ;; Look within the line for a ; following an even number of backslashes |
156 | ;; after either a non-backslash or the line beginning. | |
157 | (setq comment-start-skip "\\(\\(^\\|[^\\\\\n]\\)\\(\\\\\\\\\\)*\\);+[ \t]*") | |
ac5b21ac RS |
158 | (make-local-variable 'comment-column) |
159 | (setq comment-column 40) | |
e41b2db1 | 160 | (make-local-variable 'comment-indent-function) |
1367ff3a | 161 | (setq comment-indent-function 'lisp-comment-indent) |
2441d53d RS |
162 | (make-local-variable 'parse-sexp-ignore-comments) |
163 | (setq parse-sexp-ignore-comments t) | |
1367ff3a | 164 | (make-local-variable 'lisp-indent-function) |
4f46dc87 | 165 | (setq lisp-indent-function 'scheme-indent-function) |
1367ff3a | 166 | (setq mode-line-process '("" scheme-mode-line-process)) |
1b9a1e9d | 167 | (set (make-local-variable 'imenu-case-fold-search) t) |
c0b08eb0 | 168 | (setq imenu-generic-expression scheme-imenu-generic-expression) |
1b9a1e9d DL |
169 | (set (make-local-variable 'imenu-syntax-alist) |
170 | '(("+-*/.<>=?!$%_&~^:" . "w"))) | |
d17f0db5 | 171 | (make-local-variable 'font-lock-defaults) |
22dcd0d1 DL |
172 | (setq font-lock-defaults |
173 | '((scheme-font-lock-keywords | |
174 | scheme-font-lock-keywords-1 scheme-font-lock-keywords-2) | |
f17ae68f SM |
175 | nil t (("+-*/.<>=!?$%_&~^:" . "w") (?#. "w 14")) |
176 | beginning-of-defun | |
c676c4e5 | 177 | (font-lock-mark-block-function . mark-defun) |
f17ae68f SM |
178 | (font-lock-syntactic-face-function |
179 | . scheme-font-lock-syntactic-face-function)))) | |
ac5b21ac RS |
180 | |
181 | (defvar scheme-mode-line-process "") | |
182 | ||
150bbae7 SM |
183 | (defvar scheme-mode-map |
184 | (let ((smap (make-sparse-keymap)) | |
185 | (map (make-sparse-keymap "Scheme"))) | |
186 | (set-keymap-parent smap lisp-mode-shared-map) | |
187 | (define-key smap [menu-bar scheme] (cons "Scheme" map)) | |
ece8c34d DL |
188 | (define-key map [run-scheme] '("Run Inferior Scheme" . run-scheme)) |
189 | (define-key map [uncomment-region] | |
190 | '("Uncomment Out Region" . (lambda (beg end) | |
191 | (interactive "r") | |
192 | (comment-region beg end '(4))))) | |
193 | (define-key map [comment-region] '("Comment Out Region" . comment-region)) | |
194 | (define-key map [indent-region] '("Indent Region" . indent-region)) | |
195 | (define-key map [indent-line] '("Indent Line" . lisp-indent-line)) | |
196 | (put 'comment-region 'menu-enable 'mark-active) | |
197 | (put 'uncomment-region 'menu-enable 'mark-active) | |
150bbae7 SM |
198 | (put 'indent-region 'menu-enable 'mark-active) |
199 | smap) | |
200 | "Keymap for Scheme mode. | |
201 | All commands in `lisp-mode-shared-map' are inherited by this map.") | |
1367ff3a RS |
202 | |
203 | ;; Used by cmuscheme | |
ac5b21ac | 204 | (defun scheme-mode-commands (map) |
48879301 | 205 | ;;(define-key map "\t" 'indent-for-tab-command) ; default |
ac5b21ac | 206 | (define-key map "\177" 'backward-delete-char-untabify) |
48879301 | 207 | (define-key map "\e\C-q" 'indent-sexp)) |
ac5b21ac | 208 | \f |
e2ab0aa6 | 209 | ;;;###autoload |
ac5b21ac RS |
210 | (defun scheme-mode () |
211 | "Major mode for editing Scheme code. | |
d17f0db5 | 212 | Editing commands are similar to those of `lisp-mode'. |
ac5b21ac RS |
213 | |
214 | In addition, if an inferior Scheme process is running, some additional | |
215 | commands will be defined, for evaluating expressions and controlling | |
216 | the interpreter, and the state of the process will be displayed in the | |
217 | modeline of all Scheme buffers. The names of commands that interact | |
1b9a1e9d DL |
218 | with the Scheme process start with \"xscheme-\" if you use the MIT |
219 | Scheme-specific `xscheme' package; for more information see the | |
220 | documentation for `xscheme-interaction-mode'. Use \\[run-scheme] to | |
221 | start an inferior Scheme using the more general `cmuscheme' package. | |
ac5b21ac RS |
222 | |
223 | Commands: | |
224 | Delete converts tabs to spaces as it moves back. | |
225 | Blank lines separate paragraphs. Semicolons start comments. | |
226 | \\{scheme-mode-map} | |
d17f0db5 | 227 | Entry to this mode calls the value of `scheme-mode-hook' |
ac5b21ac RS |
228 | if that value is non-nil." |
229 | (interactive) | |
230 | (kill-all-local-variables) | |
ac5b21ac RS |
231 | (use-local-map scheme-mode-map) |
232 | (setq major-mode 'scheme-mode) | |
150bbae7 SM |
233 | (setq mode-name "Scheme") |
234 | (scheme-mode-variables) | |
235 | (run-mode-hooks 'scheme-mode-hook)) | |
ac5b21ac | 236 | |
48879301 | 237 | (defgroup scheme nil |
347a0b69 | 238 | "Editing Scheme code." |
48879301 RS |
239 | :group 'lisp) |
240 | ||
241 | (defcustom scheme-mit-dialect t | |
ac5b21ac | 242 | "If non-nil, scheme mode is specialized for MIT Scheme. |
48879301 RS |
243 | Set this to nil if you normally use another dialect." |
244 | :type 'boolean | |
245 | :group 'scheme) | |
1367ff3a | 246 | |
48879301 | 247 | (defcustom dsssl-sgml-declaration |
1367ff3a RS |
248 | "<!DOCTYPE style-sheet PUBLIC \"-//James Clark//DTD DSSSL Style Sheet//EN\"> |
249 | " | |
48879301 | 250 | "*An SGML declaration for the DSSSL file. |
2b20743d | 251 | If it is defined as a string this will be inserted into an empty buffer |
d17f0db5 | 252 | which is in `dsssl-mode'. It is typically James Clark's style-sheet |
48879301 | 253 | doctype, as required for Jade." |
d17f0db5 | 254 | :type '(choice (string :tag "Specified string") |
2b20743d DL |
255 | (const :tag "None" :value nil)) |
256 | :group 'scheme) | |
257 | ||
258 | (defcustom scheme-mode-hook nil | |
d17f0db5 | 259 | "Normal hook run when entering `scheme-mode'. |
2b20743d DL |
260 | See `run-hooks'." |
261 | :type 'hook | |
262 | :group 'scheme) | |
263 | ||
264 | (defcustom dsssl-mode-hook nil | |
d17f0db5 | 265 | "Normal hook run when entering `dsssl-mode'. |
2b20743d DL |
266 | See `run-hooks'." |
267 | :type 'hook | |
48879301 | 268 | :group 'scheme) |
1367ff3a | 269 | |
f7a6110d DL |
270 | ;; This is shared by cmuscheme and xscheme. |
271 | (defcustom scheme-program-name "scheme" | |
272 | "*Program invoked by the `run-scheme' command." | |
273 | :type 'string | |
274 | :group 'scheme) | |
275 | ||
1367ff3a RS |
276 | (defvar dsssl-imenu-generic-expression |
277 | ;; Perhaps this should also look for the style-sheet DTD tags. I'm | |
278 | ;; not sure it's the best way to organize it; perhaps one type | |
279 | ;; should be at the first level, though you don't see this anyhow if | |
280 | ;; it gets split up. | |
d17f0db5 | 281 | '(("Defines" |
d575e99d | 282 | "^(define\\s-+(?\\(\\sw+\\)" 1) |
93a7d76f | 283 | ("Modes" |
d575e99d | 284 | "^\\s-*(mode\\s-+\\(\\(\\sw\\|\\s-\\)+\\)" 1) |
93a7d76f | 285 | ("Elements" |
1367ff3a | 286 | ;; (element foo ...) or (element (foo bar ...) ...) |
26d05e22 | 287 | ;; Fixme: Perhaps it should do `root'. |
d575e99d | 288 | "^\\s-*(element\\s-+(?\\(\\(\\sw\\|\\s-\\)+\\))?" 1) |
d17f0db5 | 289 | ("Declarations" |
d575e99d | 290 | "^(declare\\(-\\sw+\\)+\\>\\s-+\\(\\sw+\\)" 2)) |
1367ff3a RS |
291 | "Imenu generic expression for DSSSL mode. See `imenu-generic-expression'.") |
292 | ||
22dcd0d1 DL |
293 | (defconst scheme-font-lock-keywords-1 |
294 | (eval-when-compile | |
295 | (list | |
296 | ;; | |
297 | ;; Declarations. Hannes Haug <hannes.haug@student.uni-tuebingen.de> says | |
298 | ;; this works for SOS, STklos, SCOOPS, Meroon and Tiny CLOS. | |
405ff5ea | 299 | (list (concat "(\\(define\\*?\\(" |
22dcd0d1 | 300 | ;; Function names. |
405ff5ea | 301 | "\\(\\|-public\\|-method\\|-generic\\(-procedure\\)?\\)\\|" |
22dcd0d1 | 302 | ;; Macro names, as variable names. A bit dubious, this. |
1b9a1e9d | 303 | "\\(-syntax\\|-macro\\)\\|" |
22dcd0d1 DL |
304 | ;; Class names. |
305 | "-class" | |
405ff5ea RS |
306 | ;; Guile modules. |
307 | "\\|-module" | |
22dcd0d1 DL |
308 | "\\)\\)\\>" |
309 | ;; Any whitespace and declared object. | |
310 | "[ \t]*(?" | |
311 | "\\(\\sw+\\)?") | |
312 | '(1 font-lock-keyword-face) | |
313 | '(6 (cond ((match-beginning 3) font-lock-function-name-face) | |
314 | ((match-beginning 5) font-lock-variable-name-face) | |
315 | (t font-lock-type-face)) | |
316 | nil t)) | |
317 | )) | |
318 | "Subdued expressions to highlight in Scheme modes.") | |
319 | ||
320 | (defconst scheme-font-lock-keywords-2 | |
321 | (append scheme-font-lock-keywords-1 | |
322 | (eval-when-compile | |
323 | (list | |
324 | ;; | |
325 | ;; Control structures. | |
326 | (cons | |
327 | (concat | |
328 | "(" (regexp-opt | |
329 | '("begin" "call-with-current-continuation" "call/cc" | |
330 | "call-with-input-file" "call-with-output-file" "case" "cond" | |
331 | "do" "else" "for-each" "if" "lambda" | |
332 | "let" "let*" "let-syntax" "letrec" "letrec-syntax" | |
333 | ;; Hannes Haug <hannes.haug@student.uni-tuebingen.de> wants: | |
c1bfdd54 | 334 | "and" "or" "delay" "force" |
22dcd0d1 DL |
335 | ;; Stefan Monnier <stefan.monnier@epfl.ch> says don't bother: |
336 | ;;"quasiquote" "quote" "unquote" "unquote-splicing" | |
337 | "map" "syntax" "syntax-rules") t) | |
338 | "\\>") 1) | |
339 | ;; | |
22071507 TTN |
340 | ;; It wouldn't be Scheme w/o named-let. |
341 | '("(let\\s-+\\(\\sw+\\)" | |
342 | (1 font-lock-function-name-face)) | |
343 | ;; | |
22dcd0d1 DL |
344 | ;; David Fox <fox@graphics.cs.nyu.edu> for SOS/STklos class specifiers. |
345 | '("\\<<\\sw+>\\>" . font-lock-type-face) | |
346 | ;; | |
cb049c41 TTN |
347 | ;; Scheme `:' and `#:' keywords as builtins. |
348 | '("\\<#?:\\sw+\\>" . font-lock-builtin-face) | |
22dcd0d1 DL |
349 | ))) |
350 | "Gaudy expressions to highlight in Scheme modes.") | |
351 | ||
352 | (defvar scheme-font-lock-keywords scheme-font-lock-keywords-1 | |
353 | "Default expressions to highlight in Scheme modes.") | |
354 | ||
f17ae68f SM |
355 | (defun scheme-font-lock-syntactic-face-function (state) |
356 | (if (nth 3 state) | |
357 | ;; In a string. | |
358 | (if (eq (char-after (nth 8 state)) ?|) | |
359 | ;; This is not a string, but a |...| symbol. | |
360 | nil | |
361 | font-lock-string-face) | |
362 | ;; In a comment. | |
363 | font-lock-comment-face)) | |
364 | ||
1367ff3a | 365 | ;;;###autoload |
150bbae7 | 366 | (define-derived-mode dsssl-mode scheme-mode "DSSSL" |
1367ff3a | 367 | "Major mode for editing DSSSL code. |
d17f0db5 | 368 | Editing commands are similar to those of `lisp-mode'. |
1367ff3a RS |
369 | |
370 | Commands: | |
371 | Delete converts tabs to spaces as it moves back. | |
372 | Blank lines separate paragraphs. Semicolons start comments. | |
373 | \\{scheme-mode-map} | |
22dcd0d1 DL |
374 | Entering this mode runs the hooks `scheme-mode-hook' and then |
375 | `dsssl-mode-hook' and inserts the value of `dsssl-sgml-declaration' if | |
376 | that variable's value is a string." | |
1367ff3a RS |
377 | (make-local-variable 'page-delimiter) |
378 | (setq page-delimiter "^;;;" ; ^L not valid SGML char | |
379 | major-mode 'dsssl-mode | |
380 | mode-name "DSSSL") | |
381 | ;; Insert a suitable SGML declaration into an empty buffer. | |
150bbae7 | 382 | ;; FIXME: This should use `auto-insert-alist' instead. |
1367ff3a | 383 | (and (zerop (buffer-size)) |
26d05e22 | 384 | (stringp dsssl-sgml-declaration) |
1367ff3a RS |
385 | (not buffer-read-only) |
386 | (insert dsssl-sgml-declaration)) | |
22dcd0d1 DL |
387 | (setq font-lock-defaults '(dsssl-font-lock-keywords |
388 | nil t (("+-*/.<>=?$%_&~^:" . "w")) | |
389 | beginning-of-defun | |
390 | (font-lock-mark-block-function . mark-defun))) | |
1b9a1e9d | 391 | (set (make-local-variable 'imenu-case-fold-search) nil) |
c0b08eb0 | 392 | (setq imenu-generic-expression dsssl-imenu-generic-expression) |
1b9a1e9d | 393 | (set (make-local-variable 'imenu-syntax-alist) |
150bbae7 | 394 | '(("+-*/.<>=?$%_&~^:" . "w")))) |
1367ff3a RS |
395 | |
396 | ;; Extra syntax for DSSSL. This isn't separated from Scheme, but | |
397 | ;; shouldn't cause much trouble in scheme-mode. | |
398 | (put 'element 'scheme-indent-function 1) | |
399 | (put 'mode 'scheme-indent-function 1) | |
400 | (put 'with-mode 'scheme-indent-function 1) | |
2f5029f3 | 401 | (put 'make 'scheme-indent-function 1) |
26d05e22 RS |
402 | (put 'style 'scheme-indent-function 1) |
403 | (put 'root 'scheme-indent-function 1) | |
1367ff3a RS |
404 | |
405 | (defvar dsssl-font-lock-keywords | |
26d05e22 RS |
406 | (eval-when-compile |
407 | (list | |
408 | ;; Similar to Scheme | |
409 | (list "(\\(define\\(-\\w+\\)?\\)\\>[ ]*\\\((?\\)\\(\\sw+\\)\\>" | |
410 | '(1 font-lock-keyword-face) | |
411 | '(4 font-lock-function-name-face)) | |
412 | (cons | |
413 | (concat "(\\(" | |
414 | ;; (make-regexp '("case" "cond" "else" "if" "lambda" | |
415 | ;; "let" "let*" "letrec" "and" "or" "map" "with-mode")) | |
416 | "and\\|c\\(ase\\|ond\\)\\|else\\|if\\|" | |
417 | "l\\(ambda\\|et\\(\\|*\\|rec\\)\\)\\|map\\|or\\|with-mode" | |
418 | "\\)\\>") | |
419 | 1) | |
420 | ;; DSSSL syntax | |
421 | '("(\\(element\\|mode\\|declare-\\w+\\)\\>[ ]*\\(\\sw+\\)" | |
422 | (1 font-lock-keyword-face) | |
423 | (2 font-lock-type-face)) | |
424 | '("(\\(element\\)\\>[ ]*(\\(\\S)+\\))" | |
425 | (1 font-lock-keyword-face) | |
426 | (2 font-lock-type-face)) | |
883212ce | 427 | '("\\<\\sw+:\\>" . font-lock-constant-face) ; trailing `:' c.f. scheme |
26d05e22 RS |
428 | ;; SGML markup (from sgml-mode) : |
429 | '("<\\([!?][-a-z0-9]+\\)" 1 font-lock-keyword-face) | |
430 | '("<\\(/?[-a-z0-9]+\\)" 1 font-lock-function-name-face))) | |
1367ff3a RS |
431 | "Default expressions to highlight in DSSSL mode.") |
432 | ||
ac5b21ac | 433 | \f |
1367ff3a RS |
434 | (defvar calculate-lisp-indent-last-sexp) |
435 | ||
436 | ;; Copied from lisp-indent-function, but with gets of | |
437 | ;; scheme-indent-{function,hook}. | |
ac5b21ac RS |
438 | (defun scheme-indent-function (indent-point state) |
439 | (let ((normal-indent (current-column))) | |
1367ff3a RS |
440 | (goto-char (1+ (elt state 1))) |
441 | (parse-partial-sexp (point) calculate-lisp-indent-last-sexp 0 t) | |
442 | (if (and (elt state 2) | |
443 | (not (looking-at "\\sw\\|\\s_"))) | |
4696802b | 444 | ;; car of form doesn't seem to be a symbol |
1367ff3a RS |
445 | (progn |
446 | (if (not (> (save-excursion (forward-line 1) (point)) | |
447 | calculate-lisp-indent-last-sexp)) | |
448 | (progn (goto-char calculate-lisp-indent-last-sexp) | |
449 | (beginning-of-line) | |
450 | (parse-partial-sexp (point) | |
451 | calculate-lisp-indent-last-sexp 0 t))) | |
452 | ;; Indent under the list or under the first sexp on the same | |
453 | ;; line as calculate-lisp-indent-last-sexp. Note that first | |
454 | ;; thing on that line has to be complete sexp since we are | |
455 | ;; inside the innermost containing sexp. | |
456 | (backward-prefix-chars) | |
457 | (current-column)) | |
458 | (let ((function (buffer-substring (point) | |
459 | (progn (forward-sexp 1) (point)))) | |
460 | method) | |
461 | (setq method (or (get (intern-soft function) 'scheme-indent-function) | |
462 | (get (intern-soft function) 'scheme-indent-hook))) | |
463 | (cond ((or (eq method 'defun) | |
464 | (and (null method) | |
465 | (> (length function) 3) | |
466 | (string-match "\\`def" function))) | |
467 | (lisp-indent-defform state indent-point)) | |
468 | ((integerp method) | |
469 | (lisp-indent-specform method state | |
470 | indent-point normal-indent)) | |
471 | (method | |
61185f42 | 472 | (funcall method state indent-point normal-indent))))))) |
1367ff3a | 473 | |
ac5b21ac RS |
474 | \f |
475 | ;;; Let is different in Scheme | |
476 | ||
477 | (defun would-be-symbol (string) | |
478 | (not (string-equal (substring string 0 1) "("))) | |
479 | ||
480 | (defun next-sexp-as-string () | |
d17f0db5 | 481 | ;; Assumes that it is protected by a save-excursion |
ac5b21ac RS |
482 | (forward-sexp 1) |
483 | (let ((the-end (point))) | |
484 | (backward-sexp 1) | |
485 | (buffer-substring (point) the-end))) | |
486 | ||
487 | ;; This is correct but too slow. | |
488 | ;; The one below works almost always. | |
489 | ;;(defun scheme-let-indent (state indent-point) | |
490 | ;; (if (would-be-symbol (next-sexp-as-string)) | |
491 | ;; (scheme-indent-specform 2 state indent-point) | |
492 | ;; (scheme-indent-specform 1 state indent-point))) | |
493 | ||
61185f42 | 494 | (defun scheme-let-indent (state indent-point normal-indent) |
ac5b21ac | 495 | (skip-chars-forward " \t") |
61361a07 | 496 | (if (looking-at "[-a-zA-Z0-9+*/?!@$%^&_:~]") |
61185f42 KH |
497 | (lisp-indent-specform 2 state indent-point normal-indent) |
498 | (lisp-indent-specform 1 state indent-point normal-indent))) | |
ac5b21ac RS |
499 | |
500 | ;; (put 'begin 'scheme-indent-function 0), say, causes begin to be indented | |
501 | ;; like defun if the first form is placed on the next line, otherwise | |
502 | ;; it is indented like any other form (i.e. forms line up under first). | |
503 | ||
504 | (put 'begin 'scheme-indent-function 0) | |
505 | (put 'case 'scheme-indent-function 1) | |
506 | (put 'delay 'scheme-indent-function 0) | |
507 | (put 'do 'scheme-indent-function 2) | |
508 | (put 'lambda 'scheme-indent-function 1) | |
509 | (put 'let 'scheme-indent-function 'scheme-let-indent) | |
510 | (put 'let* 'scheme-indent-function 1) | |
511 | (put 'letrec 'scheme-indent-function 1) | |
2b20743d DL |
512 | (put 'sequence 'scheme-indent-function 0) ; SICP, not r4rs |
513 | (put 'let-syntax 'scheme-indent-function 1) | |
514 | (put 'letrec-syntax 'scheme-indent-function 1) | |
515 | (put 'syntax-rules 'scheme-indent-function 1) | |
0ec2c350 | 516 | (put 'syntax-case 'scheme-indent-function 2) ; not r5rs |
ac5b21ac RS |
517 | |
518 | (put 'call-with-input-file 'scheme-indent-function 1) | |
519 | (put 'with-input-from-file 'scheme-indent-function 1) | |
520 | (put 'with-input-from-port 'scheme-indent-function 1) | |
521 | (put 'call-with-output-file 'scheme-indent-function 1) | |
522 | (put 'with-output-to-file 'scheme-indent-function 1) | |
523 | (put 'with-output-to-port 'scheme-indent-function 1) | |
2b20743d DL |
524 | (put 'call-with-values 'scheme-indent-function 1) ; r5rs? |
525 | (put 'dynamic-wind 'scheme-indent-function 3) ; r5rs? | |
ac5b21ac RS |
526 | \f |
527 | ;;;; MIT Scheme specific indentation. | |
528 | ||
529 | (if scheme-mit-dialect | |
530 | (progn | |
531 | (put 'fluid-let 'scheme-indent-function 1) | |
532 | (put 'in-package 'scheme-indent-function 1) | |
ac5b21ac RS |
533 | (put 'local-declare 'scheme-indent-function 1) |
534 | (put 'macro 'scheme-indent-function 1) | |
535 | (put 'make-environment 'scheme-indent-function 0) | |
536 | (put 'named-lambda 'scheme-indent-function 1) | |
537 | (put 'using-syntax 'scheme-indent-function 1) | |
538 | ||
539 | (put 'with-input-from-string 'scheme-indent-function 1) | |
540 | (put 'with-output-to-string 'scheme-indent-function 0) | |
541 | (put 'with-values 'scheme-indent-function 1) | |
542 | ||
543 | (put 'syntax-table-define 'scheme-indent-function 2) | |
544 | (put 'list-transform-positive 'scheme-indent-function 1) | |
545 | (put 'list-transform-negative 'scheme-indent-function 1) | |
546 | (put 'list-search-positive 'scheme-indent-function 1) | |
547 | (put 'list-search-negative 'scheme-indent-function 1) | |
548 | ||
549 | (put 'access-components 'scheme-indent-function 1) | |
550 | (put 'assignment-components 'scheme-indent-function 1) | |
551 | (put 'combination-components 'scheme-indent-function 1) | |
552 | (put 'comment-components 'scheme-indent-function 1) | |
553 | (put 'conditional-components 'scheme-indent-function 1) | |
554 | (put 'disjunction-components 'scheme-indent-function 1) | |
555 | (put 'declaration-components 'scheme-indent-function 1) | |
556 | (put 'definition-components 'scheme-indent-function 1) | |
557 | (put 'delay-components 'scheme-indent-function 1) | |
558 | (put 'in-package-components 'scheme-indent-function 1) | |
559 | (put 'lambda-components 'scheme-indent-function 1) | |
560 | (put 'lambda-components* 'scheme-indent-function 1) | |
561 | (put 'lambda-components** 'scheme-indent-function 1) | |
562 | (put 'open-block-components 'scheme-indent-function 1) | |
563 | (put 'pathname-components 'scheme-indent-function 1) | |
564 | (put 'procedure-components 'scheme-indent-function 1) | |
565 | (put 'sequence-components 'scheme-indent-function 1) | |
566 | (put 'unassigned\?-components 'scheme-indent-function 1) | |
567 | (put 'unbound\?-components 'scheme-indent-function 1) | |
568 | (put 'variable-components 'scheme-indent-function 1))) | |
49116ac0 JB |
569 | |
570 | (provide 'scheme) | |
c88ab9ce | 571 | |
150bbae7 | 572 | ;; arch-tag: a8f06bc1-ad11-42d2-9e36-ce651df37a90 |
c88ab9ce | 573 | ;;; scheme.el ends here |