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e8af40ee | 1 | ;;; scheme.el --- Scheme (and DSSSL) editing mode |
c88ab9ce | 2 | |
22dcd0d1 | 3 | ;; Copyright (C) 1986, 87, 88, 97, 1998 Free Software Foundation, Inc. |
3a801d0c | 4 | |
4228277d | 5 | ;; Author: Bill Rozas <jinx@martigny.ai.mit.edu> |
d575e99d | 6 | ;; Adapted-by: Dave Love <d.love@dl.ac.uk> |
d7b4d18f | 7 | ;; Keywords: languages, lisp |
e5167999 | 8 | |
ac5b21ac RS |
9 | ;; This file is part of GNU Emacs. |
10 | ||
11 | ;; GNU Emacs is free software; you can redistribute it and/or modify | |
12 | ;; it under the terms of the GNU General Public License as published by | |
e5167999 | 13 | ;; the Free Software Foundation; either version 2, or (at your option) |
ac5b21ac RS |
14 | ;; any later version. |
15 | ||
16 | ;; GNU Emacs is distributed in the hope that it will be useful, | |
17 | ;; but WITHOUT ANY WARRANTY; without even the implied warranty of | |
18 | ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
19 | ;; GNU General Public License for more details. | |
20 | ||
21 | ;; You should have received a copy of the GNU General Public License | |
b578f267 EN |
22 | ;; along with GNU Emacs; see the file COPYING. If not, write to the |
23 | ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
24 | ;; Boston, MA 02111-1307, USA. | |
ac5b21ac | 25 | |
e5167999 | 26 | ;;; Commentary: |
ac5b21ac | 27 | |
1367ff3a RS |
28 | ;; The major mode for editing Scheme-type Lisp code, very similar to |
29 | ;; the Lisp mode documented in the Emacs manual. `dsssl-mode' is a | |
30 | ;; variant of scheme-mode for editing DSSSL specifications for SGML | |
31 | ;; documents. [As of Apr 1997, some pointers for DSSSL may be found, | |
32 | ;; for instance, at <URL:http://www.sil.org/sgml/related.html#dsssl>.] | |
33 | ;; All these Lisp-ish modes vary basically in details of the language | |
34 | ;; syntax they highlight/indent/index, but dsssl-mode uses "^;;;" as | |
35 | ;; the page-delimiter since ^L isn't normally a legal SGML character. | |
36 | ;; | |
37 | ;; For interacting with a Scheme interpreter See also `run-scheme' in | |
38 | ;; the `cmuscheme' package and also the implementation-specific | |
39 | ;; `xscheme' package. | |
ac5b21ac | 40 | |
2b20743d DL |
41 | ;; Here's a recipe to generate a TAGS file for DSSSL, by the way: |
42 | ;; etags --lang=scheme --regex='/[ \t]*(\(mode\|element\)[ \t | |
43 | ;; ]+\([^ \t( | |
44 | ;; ]+\)/\2/' --regex='/[ \t]*(element[ \t | |
45 | ;; ]*([^)]+[ \t | |
46 | ;; ]+\([^)]+\)[ \t | |
47 | ;; ]*)/\1/' --regex='/(declare[^ \t | |
48 | ;; ]*[ \t | |
49 | ;; ]+\([^ \t | |
50 | ;; ]+\)/\1/' "$@" | |
51 | ||
e5167999 | 52 | ;;; Code: |
ac5b21ac | 53 | \f |
1367ff3a RS |
54 | (require 'lisp-mode) |
55 | ||
9fce950d SM |
56 | (defvar scheme-mode-syntax-table |
57 | (let ((st (make-syntax-table)) | |
58 | (i 0)) | |
c676c4e5 TTN |
59 | |
60 | ;; Default is atom-constituent. | |
61 | (while (< i 256) | |
62 | (modify-syntax-entry i "_ " st) | |
63 | (setq i (1+ i))) | |
64 | ||
65 | ;; Word components. | |
66 | (setq i ?0) | |
67 | (while (<= i ?9) | |
68 | (modify-syntax-entry i "w " st) | |
69 | (setq i (1+ i))) | |
70 | (setq i ?A) | |
71 | (while (<= i ?Z) | |
72 | (modify-syntax-entry i "w " st) | |
73 | (setq i (1+ i))) | |
74 | (setq i ?a) | |
75 | (while (<= i ?z) | |
76 | (modify-syntax-entry i "w " st) | |
77 | (setq i (1+ i))) | |
78 | ||
79 | ;; Whitespace | |
80 | (modify-syntax-entry ?\t " " st) | |
81 | (modify-syntax-entry ?\n "> " st) | |
82 | (modify-syntax-entry ?\f " " st) | |
83 | (modify-syntax-entry ?\r " " st) | |
84 | (modify-syntax-entry ? " " st) | |
85 | ||
86 | ;; These characters are delimiters but otherwise undefined. | |
87 | ;; Brackets and braces balance for editing convenience. | |
88 | (modify-syntax-entry ?\[ "(] " st) | |
89 | (modify-syntax-entry ?\] ")[ " st) | |
90 | (modify-syntax-entry ?{ "(} " st) | |
91 | (modify-syntax-entry ?} "){ " st) | |
92 | (modify-syntax-entry ?\| " 23" st) | |
93 | ||
94 | ;; Other atom delimiters | |
95 | (modify-syntax-entry ?\( "() " st) | |
96 | (modify-syntax-entry ?\) ")( " st) | |
97 | (modify-syntax-entry ?\; "< " st) | |
98 | (modify-syntax-entry ?\" "\" " st) | |
0a08535e RS |
99 | (modify-syntax-entry ?' "' " st) |
100 | (modify-syntax-entry ?` "' " st) | |
c676c4e5 TTN |
101 | |
102 | ;; Special characters | |
0a08535e RS |
103 | (modify-syntax-entry ?, "' " st) |
104 | (modify-syntax-entry ?@ "' " st) | |
105 | (modify-syntax-entry ?# "' 14" st) | |
c676c4e5 | 106 | (modify-syntax-entry ?\\ "\\ " st) |
9fce950d | 107 | st)) |
ac5b21ac | 108 | \f |
d17f0db5 | 109 | (defvar scheme-mode-abbrev-table nil) |
ac5b21ac RS |
110 | (define-abbrev-table 'scheme-mode-abbrev-table ()) |
111 | ||
1367ff3a | 112 | (defvar scheme-imenu-generic-expression |
d17f0db5 | 113 | '((nil |
d575e99d | 114 | "^(define\\(\\|-\\(generic\\(\\|-procedure\\)\\|method\\)\\)*\\s-+(?\\(\\sw+\\)" 4) |
d17f0db5 | 115 | ("Types" |
d575e99d | 116 | "^(define-class\\s-+(?\\(\\sw+\\)" 1) |
93a7d76f | 117 | ("Macros" |
d575e99d | 118 | "^(\\(defmacro\\|define-macro\\|define-syntax\\)\\s-+(?\\(\\sw+\\)" 2)) |
1367ff3a RS |
119 | "Imenu generic expression for Scheme mode. See `imenu-generic-expression'.") |
120 | ||
ac5b21ac RS |
121 | (defun scheme-mode-variables () |
122 | (set-syntax-table scheme-mode-syntax-table) | |
123 | (setq local-abbrev-table scheme-mode-abbrev-table) | |
124 | (make-local-variable 'paragraph-start) | |
53e84345 | 125 | (setq paragraph-start (concat "$\\|" page-delimiter)) |
ac5b21ac RS |
126 | (make-local-variable 'paragraph-separate) |
127 | (setq paragraph-separate paragraph-start) | |
128 | (make-local-variable 'paragraph-ignore-fill-prefix) | |
129 | (setq paragraph-ignore-fill-prefix t) | |
1367ff3a RS |
130 | (make-local-variable 'fill-paragraph-function) |
131 | (setq fill-paragraph-function 'lisp-fill-paragraph) | |
132 | ;; Adaptive fill mode gets in the way of auto-fill, | |
133 | ;; and should make no difference for explicit fill | |
134 | ;; because lisp-fill-paragraph should do the job. | |
135 | (make-local-variable 'adaptive-fill-mode) | |
136 | (setq adaptive-fill-mode nil) | |
761aea38 RS |
137 | (make-local-variable 'normal-auto-fill-function) |
138 | (setq normal-auto-fill-function 'lisp-mode-auto-fill) | |
ac5b21ac | 139 | (make-local-variable 'indent-line-function) |
1367ff3a | 140 | (setq indent-line-function 'lisp-indent-line) |
446e6a14 KH |
141 | (make-local-variable 'parse-sexp-ignore-comments) |
142 | (setq parse-sexp-ignore-comments t) | |
1367ff3a RS |
143 | (make-local-variable 'outline-regexp) |
144 | (setq outline-regexp ";;; \\|(....") | |
ac5b21ac RS |
145 | (make-local-variable 'comment-start) |
146 | (setq comment-start ";") | |
147 | (make-local-variable 'comment-start-skip) | |
a24c42f7 MB |
148 | ;; Look within the line for a ; following an even number of backslashes |
149 | ;; after either a non-backslash or the line beginning. | |
150 | (setq comment-start-skip "\\(\\(^\\|[^\\\\\n]\\)\\(\\\\\\\\\\)*\\);+[ \t]*") | |
ac5b21ac RS |
151 | (make-local-variable 'comment-column) |
152 | (setq comment-column 40) | |
e41b2db1 | 153 | (make-local-variable 'comment-indent-function) |
1367ff3a | 154 | (setq comment-indent-function 'lisp-comment-indent) |
2441d53d RS |
155 | (make-local-variable 'parse-sexp-ignore-comments) |
156 | (setq parse-sexp-ignore-comments t) | |
1367ff3a RS |
157 | (make-local-variable 'lisp-indent-function) |
158 | (set lisp-indent-function 'scheme-indent-function) | |
159 | (setq mode-line-process '("" scheme-mode-line-process)) | |
1b9a1e9d | 160 | (set (make-local-variable 'imenu-case-fold-search) t) |
c0b08eb0 | 161 | (setq imenu-generic-expression scheme-imenu-generic-expression) |
1b9a1e9d DL |
162 | (set (make-local-variable 'imenu-syntax-alist) |
163 | '(("+-*/.<>=?!$%_&~^:" . "w"))) | |
d17f0db5 | 164 | (make-local-variable 'font-lock-defaults) |
22dcd0d1 DL |
165 | (setq font-lock-defaults |
166 | '((scheme-font-lock-keywords | |
167 | scheme-font-lock-keywords-1 scheme-font-lock-keywords-2) | |
cb049c41 | 168 | nil t (("+-*/.<>=!?$%_&~^:#" . "w")) beginning-of-defun |
c676c4e5 TTN |
169 | (font-lock-mark-block-function . mark-defun) |
170 | (font-lock-syntactic-face-function . lisp-font-lock-syntactic-face-function)))) | |
ac5b21ac RS |
171 | |
172 | (defvar scheme-mode-line-process "") | |
173 | ||
ece8c34d | 174 | (defvar scheme-mode-map nil |
d3461e8f | 175 | "Keymap for Scheme mode. |
ece8c34d DL |
176 | All commands in `lisp-mode-shared-map' are inherited by this map.") |
177 | ||
178 | (unless scheme-mode-map | |
179 | (let ((map (make-sparse-keymap "Scheme"))) | |
180 | (setq scheme-mode-map (make-sparse-keymap)) | |
181 | (set-keymap-parent scheme-mode-map lisp-mode-shared-map) | |
182 | (define-key scheme-mode-map [menu-bar] (make-sparse-keymap)) | |
183 | (define-key scheme-mode-map [menu-bar scheme] | |
184 | (cons "Scheme" map)) | |
185 | (define-key map [run-scheme] '("Run Inferior Scheme" . run-scheme)) | |
186 | (define-key map [uncomment-region] | |
187 | '("Uncomment Out Region" . (lambda (beg end) | |
188 | (interactive "r") | |
189 | (comment-region beg end '(4))))) | |
190 | (define-key map [comment-region] '("Comment Out Region" . comment-region)) | |
191 | (define-key map [indent-region] '("Indent Region" . indent-region)) | |
192 | (define-key map [indent-line] '("Indent Line" . lisp-indent-line)) | |
193 | (put 'comment-region 'menu-enable 'mark-active) | |
194 | (put 'uncomment-region 'menu-enable 'mark-active) | |
195 | (put 'indent-region 'menu-enable 'mark-active))) | |
1367ff3a RS |
196 | |
197 | ;; Used by cmuscheme | |
ac5b21ac | 198 | (defun scheme-mode-commands (map) |
48879301 | 199 | ;;(define-key map "\t" 'indent-for-tab-command) ; default |
ac5b21ac | 200 | (define-key map "\177" 'backward-delete-char-untabify) |
48879301 | 201 | (define-key map "\e\C-q" 'indent-sexp)) |
ac5b21ac | 202 | \f |
e2ab0aa6 | 203 | ;;;###autoload |
ac5b21ac RS |
204 | (defun scheme-mode () |
205 | "Major mode for editing Scheme code. | |
d17f0db5 | 206 | Editing commands are similar to those of `lisp-mode'. |
ac5b21ac RS |
207 | |
208 | In addition, if an inferior Scheme process is running, some additional | |
209 | commands will be defined, for evaluating expressions and controlling | |
210 | the interpreter, and the state of the process will be displayed in the | |
211 | modeline of all Scheme buffers. The names of commands that interact | |
1b9a1e9d DL |
212 | with the Scheme process start with \"xscheme-\" if you use the MIT |
213 | Scheme-specific `xscheme' package; for more information see the | |
214 | documentation for `xscheme-interaction-mode'. Use \\[run-scheme] to | |
215 | start an inferior Scheme using the more general `cmuscheme' package. | |
ac5b21ac RS |
216 | |
217 | Commands: | |
218 | Delete converts tabs to spaces as it moves back. | |
219 | Blank lines separate paragraphs. Semicolons start comments. | |
220 | \\{scheme-mode-map} | |
d17f0db5 | 221 | Entry to this mode calls the value of `scheme-mode-hook' |
ac5b21ac RS |
222 | if that value is non-nil." |
223 | (interactive) | |
224 | (kill-all-local-variables) | |
225 | (scheme-mode-initialize) | |
226 | (scheme-mode-variables) | |
227 | (run-hooks 'scheme-mode-hook)) | |
228 | ||
229 | (defun scheme-mode-initialize () | |
230 | (use-local-map scheme-mode-map) | |
231 | (setq major-mode 'scheme-mode) | |
232 | (setq mode-name "Scheme")) | |
233 | ||
48879301 RS |
234 | (defgroup scheme nil |
235 | "Editing Scheme code" | |
236 | :group 'lisp) | |
237 | ||
238 | (defcustom scheme-mit-dialect t | |
ac5b21ac | 239 | "If non-nil, scheme mode is specialized for MIT Scheme. |
48879301 RS |
240 | Set this to nil if you normally use another dialect." |
241 | :type 'boolean | |
242 | :group 'scheme) | |
1367ff3a | 243 | |
48879301 | 244 | (defcustom dsssl-sgml-declaration |
1367ff3a RS |
245 | "<!DOCTYPE style-sheet PUBLIC \"-//James Clark//DTD DSSSL Style Sheet//EN\"> |
246 | " | |
48879301 | 247 | "*An SGML declaration for the DSSSL file. |
2b20743d | 248 | If it is defined as a string this will be inserted into an empty buffer |
d17f0db5 | 249 | which is in `dsssl-mode'. It is typically James Clark's style-sheet |
48879301 | 250 | doctype, as required for Jade." |
d17f0db5 | 251 | :type '(choice (string :tag "Specified string") |
2b20743d DL |
252 | (const :tag "None" :value nil)) |
253 | :group 'scheme) | |
254 | ||
255 | (defcustom scheme-mode-hook nil | |
d17f0db5 | 256 | "Normal hook run when entering `scheme-mode'. |
2b20743d DL |
257 | See `run-hooks'." |
258 | :type 'hook | |
259 | :group 'scheme) | |
260 | ||
261 | (defcustom dsssl-mode-hook nil | |
d17f0db5 | 262 | "Normal hook run when entering `dsssl-mode'. |
2b20743d DL |
263 | See `run-hooks'." |
264 | :type 'hook | |
48879301 | 265 | :group 'scheme) |
1367ff3a | 266 | |
f7a6110d DL |
267 | ;; This is shared by cmuscheme and xscheme. |
268 | (defcustom scheme-program-name "scheme" | |
269 | "*Program invoked by the `run-scheme' command." | |
270 | :type 'string | |
271 | :group 'scheme) | |
272 | ||
1367ff3a RS |
273 | (defvar dsssl-imenu-generic-expression |
274 | ;; Perhaps this should also look for the style-sheet DTD tags. I'm | |
275 | ;; not sure it's the best way to organize it; perhaps one type | |
276 | ;; should be at the first level, though you don't see this anyhow if | |
277 | ;; it gets split up. | |
d17f0db5 | 278 | '(("Defines" |
d575e99d | 279 | "^(define\\s-+(?\\(\\sw+\\)" 1) |
93a7d76f | 280 | ("Modes" |
d575e99d | 281 | "^\\s-*(mode\\s-+\\(\\(\\sw\\|\\s-\\)+\\)" 1) |
93a7d76f | 282 | ("Elements" |
1367ff3a | 283 | ;; (element foo ...) or (element (foo bar ...) ...) |
26d05e22 | 284 | ;; Fixme: Perhaps it should do `root'. |
d575e99d | 285 | "^\\s-*(element\\s-+(?\\(\\(\\sw\\|\\s-\\)+\\))?" 1) |
d17f0db5 | 286 | ("Declarations" |
d575e99d | 287 | "^(declare\\(-\\sw+\\)+\\>\\s-+\\(\\sw+\\)" 2)) |
1367ff3a RS |
288 | "Imenu generic expression for DSSSL mode. See `imenu-generic-expression'.") |
289 | ||
22dcd0d1 DL |
290 | (defconst scheme-font-lock-keywords-1 |
291 | (eval-when-compile | |
292 | (list | |
293 | ;; | |
294 | ;; Declarations. Hannes Haug <hannes.haug@student.uni-tuebingen.de> says | |
295 | ;; this works for SOS, STklos, SCOOPS, Meroon and Tiny CLOS. | |
405ff5ea | 296 | (list (concat "(\\(define\\*?\\(" |
22dcd0d1 | 297 | ;; Function names. |
405ff5ea | 298 | "\\(\\|-public\\|-method\\|-generic\\(-procedure\\)?\\)\\|" |
22dcd0d1 | 299 | ;; Macro names, as variable names. A bit dubious, this. |
1b9a1e9d | 300 | "\\(-syntax\\|-macro\\)\\|" |
22dcd0d1 DL |
301 | ;; Class names. |
302 | "-class" | |
405ff5ea RS |
303 | ;; Guile modules. |
304 | "\\|-module" | |
22dcd0d1 DL |
305 | "\\)\\)\\>" |
306 | ;; Any whitespace and declared object. | |
307 | "[ \t]*(?" | |
308 | "\\(\\sw+\\)?") | |
309 | '(1 font-lock-keyword-face) | |
310 | '(6 (cond ((match-beginning 3) font-lock-function-name-face) | |
311 | ((match-beginning 5) font-lock-variable-name-face) | |
312 | (t font-lock-type-face)) | |
313 | nil t)) | |
314 | )) | |
315 | "Subdued expressions to highlight in Scheme modes.") | |
316 | ||
317 | (defconst scheme-font-lock-keywords-2 | |
318 | (append scheme-font-lock-keywords-1 | |
319 | (eval-when-compile | |
320 | (list | |
321 | ;; | |
322 | ;; Control structures. | |
323 | (cons | |
324 | (concat | |
325 | "(" (regexp-opt | |
326 | '("begin" "call-with-current-continuation" "call/cc" | |
327 | "call-with-input-file" "call-with-output-file" "case" "cond" | |
328 | "do" "else" "for-each" "if" "lambda" | |
329 | "let" "let*" "let-syntax" "letrec" "letrec-syntax" | |
330 | ;; Hannes Haug <hannes.haug@student.uni-tuebingen.de> wants: | |
331 | "and" "or" "delay" | |
332 | ;; Stefan Monnier <stefan.monnier@epfl.ch> says don't bother: | |
333 | ;;"quasiquote" "quote" "unquote" "unquote-splicing" | |
334 | "map" "syntax" "syntax-rules") t) | |
335 | "\\>") 1) | |
336 | ;; | |
337 | ;; David Fox <fox@graphics.cs.nyu.edu> for SOS/STklos class specifiers. | |
338 | '("\\<<\\sw+>\\>" . font-lock-type-face) | |
339 | ;; | |
cb049c41 TTN |
340 | ;; Scheme `:' and `#:' keywords as builtins. |
341 | '("\\<#?:\\sw+\\>" . font-lock-builtin-face) | |
22dcd0d1 DL |
342 | ))) |
343 | "Gaudy expressions to highlight in Scheme modes.") | |
344 | ||
345 | (defvar scheme-font-lock-keywords scheme-font-lock-keywords-1 | |
346 | "Default expressions to highlight in Scheme modes.") | |
347 | ||
1367ff3a RS |
348 | ;;;###autoload |
349 | (defun dsssl-mode () | |
350 | "Major mode for editing DSSSL code. | |
d17f0db5 | 351 | Editing commands are similar to those of `lisp-mode'. |
1367ff3a RS |
352 | |
353 | Commands: | |
354 | Delete converts tabs to spaces as it moves back. | |
355 | Blank lines separate paragraphs. Semicolons start comments. | |
356 | \\{scheme-mode-map} | |
22dcd0d1 DL |
357 | Entering this mode runs the hooks `scheme-mode-hook' and then |
358 | `dsssl-mode-hook' and inserts the value of `dsssl-sgml-declaration' if | |
359 | that variable's value is a string." | |
1367ff3a RS |
360 | (interactive) |
361 | (kill-all-local-variables) | |
362 | (use-local-map scheme-mode-map) | |
363 | (scheme-mode-initialize) | |
1367ff3a RS |
364 | (make-local-variable 'page-delimiter) |
365 | (setq page-delimiter "^;;;" ; ^L not valid SGML char | |
366 | major-mode 'dsssl-mode | |
367 | mode-name "DSSSL") | |
368 | ;; Insert a suitable SGML declaration into an empty buffer. | |
369 | (and (zerop (buffer-size)) | |
26d05e22 | 370 | (stringp dsssl-sgml-declaration) |
1367ff3a RS |
371 | (not buffer-read-only) |
372 | (insert dsssl-sgml-declaration)) | |
1367ff3a | 373 | (scheme-mode-variables) |
22dcd0d1 DL |
374 | (setq font-lock-defaults '(dsssl-font-lock-keywords |
375 | nil t (("+-*/.<>=?$%_&~^:" . "w")) | |
376 | beginning-of-defun | |
377 | (font-lock-mark-block-function . mark-defun))) | |
1b9a1e9d | 378 | (set (make-local-variable 'imenu-case-fold-search) nil) |
c0b08eb0 | 379 | (setq imenu-generic-expression dsssl-imenu-generic-expression) |
1b9a1e9d DL |
380 | (set (make-local-variable 'imenu-syntax-alist) |
381 | '(("+-*/.<>=?$%_&~^:" . "w"))) | |
22dcd0d1 DL |
382 | (run-hooks 'scheme-mode-hook) |
383 | (run-hooks 'dsssl-mode-hook)) | |
1367ff3a RS |
384 | |
385 | ;; Extra syntax for DSSSL. This isn't separated from Scheme, but | |
386 | ;; shouldn't cause much trouble in scheme-mode. | |
387 | (put 'element 'scheme-indent-function 1) | |
388 | (put 'mode 'scheme-indent-function 1) | |
389 | (put 'with-mode 'scheme-indent-function 1) | |
2f5029f3 | 390 | (put 'make 'scheme-indent-function 1) |
26d05e22 RS |
391 | (put 'style 'scheme-indent-function 1) |
392 | (put 'root 'scheme-indent-function 1) | |
1367ff3a RS |
393 | |
394 | (defvar dsssl-font-lock-keywords | |
26d05e22 RS |
395 | (eval-when-compile |
396 | (list | |
397 | ;; Similar to Scheme | |
398 | (list "(\\(define\\(-\\w+\\)?\\)\\>[ ]*\\\((?\\)\\(\\sw+\\)\\>" | |
399 | '(1 font-lock-keyword-face) | |
400 | '(4 font-lock-function-name-face)) | |
401 | (cons | |
402 | (concat "(\\(" | |
403 | ;; (make-regexp '("case" "cond" "else" "if" "lambda" | |
404 | ;; "let" "let*" "letrec" "and" "or" "map" "with-mode")) | |
405 | "and\\|c\\(ase\\|ond\\)\\|else\\|if\\|" | |
406 | "l\\(ambda\\|et\\(\\|*\\|rec\\)\\)\\|map\\|or\\|with-mode" | |
407 | "\\)\\>") | |
408 | 1) | |
409 | ;; DSSSL syntax | |
410 | '("(\\(element\\|mode\\|declare-\\w+\\)\\>[ ]*\\(\\sw+\\)" | |
411 | (1 font-lock-keyword-face) | |
412 | (2 font-lock-type-face)) | |
413 | '("(\\(element\\)\\>[ ]*(\\(\\S)+\\))" | |
414 | (1 font-lock-keyword-face) | |
415 | (2 font-lock-type-face)) | |
883212ce | 416 | '("\\<\\sw+:\\>" . font-lock-constant-face) ; trailing `:' c.f. scheme |
26d05e22 RS |
417 | ;; SGML markup (from sgml-mode) : |
418 | '("<\\([!?][-a-z0-9]+\\)" 1 font-lock-keyword-face) | |
419 | '("<\\(/?[-a-z0-9]+\\)" 1 font-lock-function-name-face))) | |
1367ff3a RS |
420 | "Default expressions to highlight in DSSSL mode.") |
421 | ||
ac5b21ac | 422 | \f |
1367ff3a RS |
423 | (defvar calculate-lisp-indent-last-sexp) |
424 | ||
425 | ;; Copied from lisp-indent-function, but with gets of | |
426 | ;; scheme-indent-{function,hook}. | |
ac5b21ac RS |
427 | (defun scheme-indent-function (indent-point state) |
428 | (let ((normal-indent (current-column))) | |
1367ff3a RS |
429 | (goto-char (1+ (elt state 1))) |
430 | (parse-partial-sexp (point) calculate-lisp-indent-last-sexp 0 t) | |
431 | (if (and (elt state 2) | |
432 | (not (looking-at "\\sw\\|\\s_"))) | |
4696802b | 433 | ;; car of form doesn't seem to be a symbol |
1367ff3a RS |
434 | (progn |
435 | (if (not (> (save-excursion (forward-line 1) (point)) | |
436 | calculate-lisp-indent-last-sexp)) | |
437 | (progn (goto-char calculate-lisp-indent-last-sexp) | |
438 | (beginning-of-line) | |
439 | (parse-partial-sexp (point) | |
440 | calculate-lisp-indent-last-sexp 0 t))) | |
441 | ;; Indent under the list or under the first sexp on the same | |
442 | ;; line as calculate-lisp-indent-last-sexp. Note that first | |
443 | ;; thing on that line has to be complete sexp since we are | |
444 | ;; inside the innermost containing sexp. | |
445 | (backward-prefix-chars) | |
446 | (current-column)) | |
447 | (let ((function (buffer-substring (point) | |
448 | (progn (forward-sexp 1) (point)))) | |
449 | method) | |
450 | (setq method (or (get (intern-soft function) 'scheme-indent-function) | |
451 | (get (intern-soft function) 'scheme-indent-hook))) | |
452 | (cond ((or (eq method 'defun) | |
453 | (and (null method) | |
454 | (> (length function) 3) | |
455 | (string-match "\\`def" function))) | |
456 | (lisp-indent-defform state indent-point)) | |
457 | ((integerp method) | |
458 | (lisp-indent-specform method state | |
459 | indent-point normal-indent)) | |
460 | (method | |
61185f42 | 461 | (funcall method state indent-point normal-indent))))))) |
1367ff3a | 462 | |
ac5b21ac RS |
463 | \f |
464 | ;;; Let is different in Scheme | |
465 | ||
466 | (defun would-be-symbol (string) | |
467 | (not (string-equal (substring string 0 1) "("))) | |
468 | ||
469 | (defun next-sexp-as-string () | |
d17f0db5 | 470 | ;; Assumes that it is protected by a save-excursion |
ac5b21ac RS |
471 | (forward-sexp 1) |
472 | (let ((the-end (point))) | |
473 | (backward-sexp 1) | |
474 | (buffer-substring (point) the-end))) | |
475 | ||
476 | ;; This is correct but too slow. | |
477 | ;; The one below works almost always. | |
478 | ;;(defun scheme-let-indent (state indent-point) | |
479 | ;; (if (would-be-symbol (next-sexp-as-string)) | |
480 | ;; (scheme-indent-specform 2 state indent-point) | |
481 | ;; (scheme-indent-specform 1 state indent-point))) | |
482 | ||
61185f42 | 483 | (defun scheme-let-indent (state indent-point normal-indent) |
ac5b21ac | 484 | (skip-chars-forward " \t") |
61361a07 | 485 | (if (looking-at "[-a-zA-Z0-9+*/?!@$%^&_:~]") |
61185f42 KH |
486 | (lisp-indent-specform 2 state indent-point normal-indent) |
487 | (lisp-indent-specform 1 state indent-point normal-indent))) | |
ac5b21ac RS |
488 | |
489 | ;; (put 'begin 'scheme-indent-function 0), say, causes begin to be indented | |
490 | ;; like defun if the first form is placed on the next line, otherwise | |
491 | ;; it is indented like any other form (i.e. forms line up under first). | |
492 | ||
493 | (put 'begin 'scheme-indent-function 0) | |
494 | (put 'case 'scheme-indent-function 1) | |
495 | (put 'delay 'scheme-indent-function 0) | |
496 | (put 'do 'scheme-indent-function 2) | |
497 | (put 'lambda 'scheme-indent-function 1) | |
498 | (put 'let 'scheme-indent-function 'scheme-let-indent) | |
499 | (put 'let* 'scheme-indent-function 1) | |
500 | (put 'letrec 'scheme-indent-function 1) | |
2b20743d DL |
501 | (put 'sequence 'scheme-indent-function 0) ; SICP, not r4rs |
502 | (put 'let-syntax 'scheme-indent-function 1) | |
503 | (put 'letrec-syntax 'scheme-indent-function 1) | |
504 | (put 'syntax-rules 'scheme-indent-function 1) | |
0ec2c350 | 505 | (put 'syntax-case 'scheme-indent-function 2) ; not r5rs |
ac5b21ac RS |
506 | |
507 | (put 'call-with-input-file 'scheme-indent-function 1) | |
508 | (put 'with-input-from-file 'scheme-indent-function 1) | |
509 | (put 'with-input-from-port 'scheme-indent-function 1) | |
510 | (put 'call-with-output-file 'scheme-indent-function 1) | |
511 | (put 'with-output-to-file 'scheme-indent-function 1) | |
512 | (put 'with-output-to-port 'scheme-indent-function 1) | |
2b20743d DL |
513 | (put 'call-with-values 'scheme-indent-function 1) ; r5rs? |
514 | (put 'dynamic-wind 'scheme-indent-function 3) ; r5rs? | |
ac5b21ac RS |
515 | \f |
516 | ;;;; MIT Scheme specific indentation. | |
517 | ||
518 | (if scheme-mit-dialect | |
519 | (progn | |
520 | (put 'fluid-let 'scheme-indent-function 1) | |
521 | (put 'in-package 'scheme-indent-function 1) | |
ac5b21ac RS |
522 | (put 'local-declare 'scheme-indent-function 1) |
523 | (put 'macro 'scheme-indent-function 1) | |
524 | (put 'make-environment 'scheme-indent-function 0) | |
525 | (put 'named-lambda 'scheme-indent-function 1) | |
526 | (put 'using-syntax 'scheme-indent-function 1) | |
527 | ||
528 | (put 'with-input-from-string 'scheme-indent-function 1) | |
529 | (put 'with-output-to-string 'scheme-indent-function 0) | |
530 | (put 'with-values 'scheme-indent-function 1) | |
531 | ||
532 | (put 'syntax-table-define 'scheme-indent-function 2) | |
533 | (put 'list-transform-positive 'scheme-indent-function 1) | |
534 | (put 'list-transform-negative 'scheme-indent-function 1) | |
535 | (put 'list-search-positive 'scheme-indent-function 1) | |
536 | (put 'list-search-negative 'scheme-indent-function 1) | |
537 | ||
538 | (put 'access-components 'scheme-indent-function 1) | |
539 | (put 'assignment-components 'scheme-indent-function 1) | |
540 | (put 'combination-components 'scheme-indent-function 1) | |
541 | (put 'comment-components 'scheme-indent-function 1) | |
542 | (put 'conditional-components 'scheme-indent-function 1) | |
543 | (put 'disjunction-components 'scheme-indent-function 1) | |
544 | (put 'declaration-components 'scheme-indent-function 1) | |
545 | (put 'definition-components 'scheme-indent-function 1) | |
546 | (put 'delay-components 'scheme-indent-function 1) | |
547 | (put 'in-package-components 'scheme-indent-function 1) | |
548 | (put 'lambda-components 'scheme-indent-function 1) | |
549 | (put 'lambda-components* 'scheme-indent-function 1) | |
550 | (put 'lambda-components** 'scheme-indent-function 1) | |
551 | (put 'open-block-components 'scheme-indent-function 1) | |
552 | (put 'pathname-components 'scheme-indent-function 1) | |
553 | (put 'procedure-components 'scheme-indent-function 1) | |
554 | (put 'sequence-components 'scheme-indent-function 1) | |
555 | (put 'unassigned\?-components 'scheme-indent-function 1) | |
556 | (put 'unbound\?-components 'scheme-indent-function 1) | |
557 | (put 'variable-components 'scheme-indent-function 1))) | |
49116ac0 JB |
558 | |
559 | (provide 'scheme) | |
c88ab9ce | 560 | |
ab5796a9 | 561 | ;;; arch-tag: a8f06bc1-ad11-42d2-9e36-ce651df37a90 |
c88ab9ce | 562 | ;;; scheme.el ends here |