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d5031a2a | 1 | ;;; scheme.el --- Scheme (and DSSSL) editing mode -*- lexical-binding: t; -*- |
c88ab9ce | 2 | |
ba318903 | 3 | ;; Copyright (C) 1986-1988, 1997-1998, 2001-2014 Free Software |
ab422c4d | 4 | ;; 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 | ||
b1fc2b50 | 12 | ;; GNU Emacs is free software: you can redistribute it and/or modify |
ac5b21ac | 13 | ;; it under the terms of the GNU General Public License as published by |
b1fc2b50 GM |
14 | ;; the Free Software Foundation, either version 3 of the License, or |
15 | ;; (at your option) any later version. | |
ac5b21ac RS |
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 | |
b1fc2b50 | 23 | ;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. |
ac5b21ac | 24 | |
e5167999 | 25 | ;;; Commentary: |
ac5b21ac | 26 | |
1367ff3a RS |
27 | ;; The major mode for editing Scheme-type Lisp code, very similar to |
28 | ;; the Lisp mode documented in the Emacs manual. `dsssl-mode' is a | |
29 | ;; variant of scheme-mode for editing DSSSL specifications for SGML | |
30 | ;; documents. [As of Apr 1997, some pointers for DSSSL may be found, | |
31 | ;; for instance, at <URL:http://www.sil.org/sgml/related.html#dsssl>.] | |
32 | ;; All these Lisp-ish modes vary basically in details of the language | |
33 | ;; syntax they highlight/indent/index, but dsssl-mode uses "^;;;" as | |
64ef5f39 | 34 | ;; the page-delimiter since ^L isn't normally a valid SGML character. |
1367ff3a RS |
35 | ;; |
36 | ;; For interacting with a Scheme interpreter See also `run-scheme' in | |
37 | ;; the `cmuscheme' package and also the implementation-specific | |
38 | ;; `xscheme' package. | |
ac5b21ac | 39 | |
2b20743d DL |
40 | ;; Here's a recipe to generate a TAGS file for DSSSL, by the way: |
41 | ;; etags --lang=scheme --regex='/[ \t]*(\(mode\|element\)[ \t | |
42 | ;; ]+\([^ \t( | |
43 | ;; ]+\)/\2/' --regex='/[ \t]*(element[ \t | |
44 | ;; ]*([^)]+[ \t | |
45 | ;; ]+\([^)]+\)[ \t | |
46 | ;; ]*)/\1/' --regex='/(declare[^ \t | |
47 | ;; ]*[ \t | |
48 | ;; ]+\([^ \t | |
49 | ;; ]+\)/\1/' "$@" | |
50 | ||
e5167999 | 51 | ;;; Code: |
ac5b21ac | 52 | \f |
1367ff3a RS |
53 | (require 'lisp-mode) |
54 | ||
9fce950d SM |
55 | (defvar scheme-mode-syntax-table |
56 | (let ((st (make-syntax-table)) | |
57 | (i 0)) | |
f13f86fb CY |
58 | ;; Symbol constituents |
59 | ;; We used to treat chars 128-256 as symbol-constituent, but they | |
60 | ;; should be valid word constituents (Bug#8843). Note that valid | |
61 | ;; identifier characters are Scheme-implementation dependent. | |
62 | (while (< i ?0) | |
c676c4e5 TTN |
63 | (modify-syntax-entry i "_ " st) |
64 | (setq i (1+ i))) | |
f13f86fb CY |
65 | (setq i (1+ ?9)) |
66 | (while (< i ?A) | |
67 | (modify-syntax-entry i "_ " st) | |
c676c4e5 | 68 | (setq i (1+ i))) |
f13f86fb CY |
69 | (setq i (1+ ?Z)) |
70 | (while (< i ?a) | |
71 | (modify-syntax-entry i "_ " st) | |
c676c4e5 | 72 | (setq i (1+ i))) |
f13f86fb CY |
73 | (setq i (1+ ?z)) |
74 | (while (< i 128) | |
75 | (modify-syntax-entry i "_ " st) | |
c676c4e5 TTN |
76 | (setq i (1+ i))) |
77 | ||
78 | ;; Whitespace | |
79 | (modify-syntax-entry ?\t " " st) | |
80 | (modify-syntax-entry ?\n "> " st) | |
81 | (modify-syntax-entry ?\f " " st) | |
82 | (modify-syntax-entry ?\r " " st) | |
347a0b69 | 83 | (modify-syntax-entry ?\s " " st) |
c676c4e5 TTN |
84 | |
85 | ;; These characters are delimiters but otherwise undefined. | |
86 | ;; Brackets and braces balance for editing convenience. | |
87 | (modify-syntax-entry ?\[ "(] " st) | |
88 | (modify-syntax-entry ?\] ")[ " st) | |
89 | (modify-syntax-entry ?{ "(} " st) | |
90 | (modify-syntax-entry ?} "){ " st) | |
f17ae68f SM |
91 | (modify-syntax-entry ?\| "\" 23bn" st) |
92 | ;; Guile allows #! ... !# comments. | |
93 | ;; But SRFI-22 defines the comment as #!...\n instead. | |
94 | ;; Also Guile says that the !# should be on a line of its own. | |
95 | ;; It's too difficult to get it right, for too little benefit. | |
96 | ;; (modify-syntax-entry ?! "_ 2" st) | |
c676c4e5 TTN |
97 | |
98 | ;; Other atom delimiters | |
99 | (modify-syntax-entry ?\( "() " st) | |
100 | (modify-syntax-entry ?\) ")( " st) | |
21c3ef84 | 101 | ;; It's used for single-line comments as well as for #;(...) sexp-comments. |
0a5cfeee | 102 | (modify-syntax-entry ?\; "<" st) |
21c3ef84 | 103 | (modify-syntax-entry ?\" "\" " st) |
0a08535e RS |
104 | (modify-syntax-entry ?' "' " st) |
105 | (modify-syntax-entry ?` "' " st) | |
c676c4e5 TTN |
106 | |
107 | ;; Special characters | |
0a08535e RS |
108 | (modify-syntax-entry ?, "' " st) |
109 | (modify-syntax-entry ?@ "' " st) | |
c5683ceb | 110 | (modify-syntax-entry ?# "' 14" st) |
c676c4e5 | 111 | (modify-syntax-entry ?\\ "\\ " st) |
9fce950d | 112 | st)) |
ac5b21ac | 113 | \f |
d17f0db5 | 114 | (defvar scheme-mode-abbrev-table nil) |
ac5b21ac RS |
115 | (define-abbrev-table 'scheme-mode-abbrev-table ()) |
116 | ||
1367ff3a | 117 | (defvar scheme-imenu-generic-expression |
d17f0db5 | 118 | '((nil |
d575e99d | 119 | "^(define\\(\\|-\\(generic\\(\\|-procedure\\)\\|method\\)\\)*\\s-+(?\\(\\sw+\\)" 4) |
d17f0db5 | 120 | ("Types" |
d575e99d | 121 | "^(define-class\\s-+(?\\(\\sw+\\)" 1) |
93a7d76f | 122 | ("Macros" |
d575e99d | 123 | "^(\\(defmacro\\|define-macro\\|define-syntax\\)\\s-+(?\\(\\sw+\\)" 2)) |
1367ff3a RS |
124 | "Imenu generic expression for Scheme mode. See `imenu-generic-expression'.") |
125 | ||
ac5b21ac RS |
126 | (defun scheme-mode-variables () |
127 | (set-syntax-table scheme-mode-syntax-table) | |
128 | (setq local-abbrev-table scheme-mode-abbrev-table) | |
ba03d0d9 CY |
129 | (setq-local paragraph-start (concat "$\\|" page-delimiter)) |
130 | (setq-local paragraph-separate paragraph-start) | |
131 | (setq-local paragraph-ignore-fill-prefix t) | |
132 | (setq-local fill-paragraph-function 'lisp-fill-paragraph) | |
1367ff3a RS |
133 | ;; Adaptive fill mode gets in the way of auto-fill, |
134 | ;; and should make no difference for explicit fill | |
135 | ;; because lisp-fill-paragraph should do the job. | |
ba03d0d9 CY |
136 | (setq-local adaptive-fill-mode nil) |
137 | (setq-local indent-line-function 'lisp-indent-line) | |
138 | (setq-local parse-sexp-ignore-comments t) | |
139 | (setq-local outline-regexp ";;; \\|(....") | |
140 | (setq-local add-log-current-defun-function #'lisp-current-defun-name) | |
141 | (setq-local comment-start ";") | |
142 | (setq-local comment-add 1) | |
4f8aeb84 DG |
143 | (setq-local comment-start-skip ";+[ \t]*") |
144 | (setq-local comment-use-syntax t) | |
ba03d0d9 CY |
145 | (setq-local comment-column 40) |
146 | (setq-local parse-sexp-ignore-comments t) | |
147 | (setq-local lisp-indent-function 'scheme-indent-function) | |
1367ff3a | 148 | (setq mode-line-process '("" scheme-mode-line-process)) |
ba03d0d9 | 149 | (setq-local imenu-case-fold-search t) |
0a5cfeee SM |
150 | (setq-local imenu-generic-expression scheme-imenu-generic-expression) |
151 | (setq-local imenu-syntax-alist '(("+-*/.<>=?!$%_&~^:" . "w"))) | |
152 | (setq-local syntax-propertize-function #'scheme-syntax-propertize) | |
ba03d0d9 CY |
153 | (setq font-lock-defaults |
154 | '((scheme-font-lock-keywords | |
155 | scheme-font-lock-keywords-1 scheme-font-lock-keywords-2) | |
156 | nil t (("+-*/.<>=!?$%_&~^:" . "w") (?#. "w 14")) | |
157 | beginning-of-defun | |
0a5cfeee | 158 | (font-lock-mark-block-function . mark-defun))) |
ba03d0d9 | 159 | (setq-local lisp-doc-string-elt-property 'scheme-doc-string-elt)) |
ac5b21ac RS |
160 | |
161 | (defvar scheme-mode-line-process "") | |
162 | ||
150bbae7 SM |
163 | (defvar scheme-mode-map |
164 | (let ((smap (make-sparse-keymap)) | |
165 | (map (make-sparse-keymap "Scheme"))) | |
166 | (set-keymap-parent smap lisp-mode-shared-map) | |
167 | (define-key smap [menu-bar scheme] (cons "Scheme" map)) | |
ece8c34d DL |
168 | (define-key map [run-scheme] '("Run Inferior Scheme" . run-scheme)) |
169 | (define-key map [uncomment-region] | |
170 | '("Uncomment Out Region" . (lambda (beg end) | |
171 | (interactive "r") | |
172 | (comment-region beg end '(4))))) | |
173 | (define-key map [comment-region] '("Comment Out Region" . comment-region)) | |
174 | (define-key map [indent-region] '("Indent Region" . indent-region)) | |
175 | (define-key map [indent-line] '("Indent Line" . lisp-indent-line)) | |
176 | (put 'comment-region 'menu-enable 'mark-active) | |
177 | (put 'uncomment-region 'menu-enable 'mark-active) | |
150bbae7 SM |
178 | (put 'indent-region 'menu-enable 'mark-active) |
179 | smap) | |
180 | "Keymap for Scheme mode. | |
181 | All commands in `lisp-mode-shared-map' are inherited by this map.") | |
1367ff3a RS |
182 | |
183 | ;; Used by cmuscheme | |
ac5b21ac | 184 | (defun scheme-mode-commands (map) |
48879301 | 185 | ;;(define-key map "\t" 'indent-for-tab-command) ; default |
ac5b21ac | 186 | (define-key map "\177" 'backward-delete-char-untabify) |
48879301 | 187 | (define-key map "\e\C-q" 'indent-sexp)) |
ac5b21ac | 188 | \f |
e2ab0aa6 | 189 | ;;;###autoload |
175069ef | 190 | (define-derived-mode scheme-mode prog-mode "Scheme" |
ac5b21ac | 191 | "Major mode for editing Scheme code. |
d17f0db5 | 192 | Editing commands are similar to those of `lisp-mode'. |
ac5b21ac RS |
193 | |
194 | In addition, if an inferior Scheme process is running, some additional | |
195 | commands will be defined, for evaluating expressions and controlling | |
196 | the interpreter, and the state of the process will be displayed in the | |
37269466 | 197 | mode line of all Scheme buffers. The names of commands that interact |
1b9a1e9d DL |
198 | with the Scheme process start with \"xscheme-\" if you use the MIT |
199 | Scheme-specific `xscheme' package; for more information see the | |
200 | documentation for `xscheme-interaction-mode'. Use \\[run-scheme] to | |
201 | start an inferior Scheme using the more general `cmuscheme' package. | |
ac5b21ac RS |
202 | |
203 | Commands: | |
204 | Delete converts tabs to spaces as it moves back. | |
205 | Blank lines separate paragraphs. Semicolons start comments. | |
ae1f1ce1 | 206 | \\{scheme-mode-map}" |
175069ef | 207 | (scheme-mode-variables)) |
ac5b21ac | 208 | |
48879301 | 209 | (defgroup scheme nil |
347a0b69 | 210 | "Editing Scheme code." |
8ec3bce0 | 211 | :link '(custom-group-link :tag "Font Lock Faces group" font-lock-faces) |
48879301 RS |
212 | :group 'lisp) |
213 | ||
214 | (defcustom scheme-mit-dialect t | |
ac5b21ac | 215 | "If non-nil, scheme mode is specialized for MIT Scheme. |
48879301 RS |
216 | Set this to nil if you normally use another dialect." |
217 | :type 'boolean | |
218 | :group 'scheme) | |
1367ff3a | 219 | |
48879301 | 220 | (defcustom dsssl-sgml-declaration |
1367ff3a RS |
221 | "<!DOCTYPE style-sheet PUBLIC \"-//James Clark//DTD DSSSL Style Sheet//EN\"> |
222 | " | |
fb7ada5f | 223 | "An SGML declaration for the DSSSL file. |
2b20743d | 224 | If it is defined as a string this will be inserted into an empty buffer |
d17f0db5 | 225 | which is in `dsssl-mode'. It is typically James Clark's style-sheet |
48879301 | 226 | doctype, as required for Jade." |
d17f0db5 | 227 | :type '(choice (string :tag "Specified string") |
2b20743d DL |
228 | (const :tag "None" :value nil)) |
229 | :group 'scheme) | |
230 | ||
231 | (defcustom scheme-mode-hook nil | |
d17f0db5 | 232 | "Normal hook run when entering `scheme-mode'. |
2b20743d DL |
233 | See `run-hooks'." |
234 | :type 'hook | |
235 | :group 'scheme) | |
236 | ||
237 | (defcustom dsssl-mode-hook nil | |
d17f0db5 | 238 | "Normal hook run when entering `dsssl-mode'. |
2b20743d DL |
239 | See `run-hooks'." |
240 | :type 'hook | |
48879301 | 241 | :group 'scheme) |
1367ff3a | 242 | |
f7a6110d DL |
243 | ;; This is shared by cmuscheme and xscheme. |
244 | (defcustom scheme-program-name "scheme" | |
fb7ada5f | 245 | "Program invoked by the `run-scheme' command." |
f7a6110d DL |
246 | :type 'string |
247 | :group 'scheme) | |
248 | ||
1367ff3a RS |
249 | (defvar dsssl-imenu-generic-expression |
250 | ;; Perhaps this should also look for the style-sheet DTD tags. I'm | |
251 | ;; not sure it's the best way to organize it; perhaps one type | |
252 | ;; should be at the first level, though you don't see this anyhow if | |
253 | ;; it gets split up. | |
d17f0db5 | 254 | '(("Defines" |
d575e99d | 255 | "^(define\\s-+(?\\(\\sw+\\)" 1) |
93a7d76f | 256 | ("Modes" |
d575e99d | 257 | "^\\s-*(mode\\s-+\\(\\(\\sw\\|\\s-\\)+\\)" 1) |
93a7d76f | 258 | ("Elements" |
1367ff3a | 259 | ;; (element foo ...) or (element (foo bar ...) ...) |
26d05e22 | 260 | ;; Fixme: Perhaps it should do `root'. |
d575e99d | 261 | "^\\s-*(element\\s-+(?\\(\\(\\sw\\|\\s-\\)+\\))?" 1) |
d17f0db5 | 262 | ("Declarations" |
d575e99d | 263 | "^(declare\\(-\\sw+\\)+\\>\\s-+\\(\\sw+\\)" 2)) |
1367ff3a RS |
264 | "Imenu generic expression for DSSSL mode. See `imenu-generic-expression'.") |
265 | ||
22dcd0d1 DL |
266 | (defconst scheme-font-lock-keywords-1 |
267 | (eval-when-compile | |
268 | (list | |
269 | ;; | |
270 | ;; Declarations. Hannes Haug <hannes.haug@student.uni-tuebingen.de> says | |
271 | ;; this works for SOS, STklos, SCOOPS, Meroon and Tiny CLOS. | |
405ff5ea | 272 | (list (concat "(\\(define\\*?\\(" |
22dcd0d1 | 273 | ;; Function names. |
405ff5ea | 274 | "\\(\\|-public\\|-method\\|-generic\\(-procedure\\)?\\)\\|" |
22dcd0d1 | 275 | ;; Macro names, as variable names. A bit dubious, this. |
1b9a1e9d | 276 | "\\(-syntax\\|-macro\\)\\|" |
22dcd0d1 DL |
277 | ;; Class names. |
278 | "-class" | |
405ff5ea RS |
279 | ;; Guile modules. |
280 | "\\|-module" | |
22dcd0d1 DL |
281 | "\\)\\)\\>" |
282 | ;; Any whitespace and declared object. | |
5e4ab4e4 TTN |
283 | ;; The "(*" is for curried definitions, e.g., |
284 | ;; (define ((sum a) b) (+ a b)) | |
285 | "[ \t]*(*" | |
22dcd0d1 DL |
286 | "\\(\\sw+\\)?") |
287 | '(1 font-lock-keyword-face) | |
288 | '(6 (cond ((match-beginning 3) font-lock-function-name-face) | |
289 | ((match-beginning 5) font-lock-variable-name-face) | |
290 | (t font-lock-type-face)) | |
291 | nil t)) | |
292 | )) | |
293 | "Subdued expressions to highlight in Scheme modes.") | |
294 | ||
295 | (defconst scheme-font-lock-keywords-2 | |
296 | (append scheme-font-lock-keywords-1 | |
297 | (eval-when-compile | |
298 | (list | |
299 | ;; | |
300 | ;; Control structures. | |
301 | (cons | |
302 | (concat | |
303 | "(" (regexp-opt | |
304 | '("begin" "call-with-current-continuation" "call/cc" | |
305 | "call-with-input-file" "call-with-output-file" "case" "cond" | |
67ed8fcd | 306 | "do" "else" "for-each" "if" "lambda" "λ" |
22dcd0d1 | 307 | "let" "let*" "let-syntax" "letrec" "letrec-syntax" |
12e5e86e SH |
308 | ;; R6RS library subforms. |
309 | "export" "import" | |
12cf1a12 TTN |
310 | ;; SRFI 11 usage comes up often enough. |
311 | "let-values" "let*-values" | |
22dcd0d1 | 312 | ;; Hannes Haug <hannes.haug@student.uni-tuebingen.de> wants: |
c1bfdd54 | 313 | "and" "or" "delay" "force" |
22dcd0d1 DL |
314 | ;; Stefan Monnier <stefan.monnier@epfl.ch> says don't bother: |
315 | ;;"quasiquote" "quote" "unquote" "unquote-splicing" | |
316 | "map" "syntax" "syntax-rules") t) | |
317 | "\\>") 1) | |
318 | ;; | |
22071507 TTN |
319 | ;; It wouldn't be Scheme w/o named-let. |
320 | '("(let\\s-+\\(\\sw+\\)" | |
321 | (1 font-lock-function-name-face)) | |
322 | ;; | |
22dcd0d1 DL |
323 | ;; David Fox <fox@graphics.cs.nyu.edu> for SOS/STklos class specifiers. |
324 | '("\\<<\\sw+>\\>" . font-lock-type-face) | |
325 | ;; | |
cb049c41 TTN |
326 | ;; Scheme `:' and `#:' keywords as builtins. |
327 | '("\\<#?:\\sw+\\>" . font-lock-builtin-face) | |
12e5e86e SH |
328 | ;; R6RS library declarations. |
329 | '("(\\(\\<library\\>\\)\\s-*(?\\(\\sw+\\)?" | |
330 | (1 font-lock-keyword-face) | |
331 | (2 font-lock-type-face)) | |
22dcd0d1 DL |
332 | ))) |
333 | "Gaudy expressions to highlight in Scheme modes.") | |
334 | ||
335 | (defvar scheme-font-lock-keywords scheme-font-lock-keywords-1 | |
336 | "Default expressions to highlight in Scheme modes.") | |
337 | ||
21c3ef84 SM |
338 | (defconst scheme-sexp-comment-syntax-table |
339 | (let ((st (make-syntax-table scheme-mode-syntax-table))) | |
340 | (modify-syntax-entry ?\; "." st) | |
341 | (modify-syntax-entry ?\n " " st) | |
342 | (modify-syntax-entry ?# "'" st) | |
343 | st)) | |
344 | ||
345 | (put 'lambda 'scheme-doc-string-elt 2) | |
346 | ;; Docstring's pos in a `define' depends on whether it's a var or fun def. | |
347 | (put 'define 'scheme-doc-string-elt | |
348 | (lambda () | |
349 | ;; The function is called with point right after "define". | |
350 | (forward-comment (point-max)) | |
351 | (if (eq (char-after) ?\() 2 0))) | |
352 | ||
0a5cfeee SM |
353 | (defun scheme-syntax-propertize (beg end) |
354 | (goto-char beg) | |
355 | (scheme-syntax-propertize-sexp-comment (point) end) | |
356 | (funcall | |
357 | (syntax-propertize-rules | |
358 | ("\\(#\\);" (1 (prog1 "< cn" | |
359 | (scheme-syntax-propertize-sexp-comment (point) end))))) | |
360 | (point) end)) | |
361 | ||
362 | (defun scheme-syntax-propertize-sexp-comment (_ end) | |
363 | (let ((state (syntax-ppss))) | |
364 | (when (eq 2 (nth 7 state)) | |
365 | ;; It's a sexp-comment. Tell parse-partial-sexp where it ends. | |
366 | (condition-case nil | |
367 | (progn | |
368 | (goto-char (+ 2 (nth 8 state))) | |
369 | ;; FIXME: this doesn't handle the case where the sexp | |
370 | ;; itself contains a #; comment. | |
371 | (forward-sexp 1) | |
372 | (put-text-property (1- (point)) (point) | |
373 | 'syntax-table (string-to-syntax "> cn"))) | |
374 | (scan-error (goto-char end)))))) | |
f17ae68f | 375 | |
1367ff3a | 376 | ;;;###autoload |
150bbae7 | 377 | (define-derived-mode dsssl-mode scheme-mode "DSSSL" |
1367ff3a | 378 | "Major mode for editing DSSSL code. |
d17f0db5 | 379 | Editing commands are similar to those of `lisp-mode'. |
1367ff3a RS |
380 | |
381 | Commands: | |
382 | Delete converts tabs to spaces as it moves back. | |
383 | Blank lines separate paragraphs. Semicolons start comments. | |
384 | \\{scheme-mode-map} | |
22dcd0d1 DL |
385 | Entering this mode runs the hooks `scheme-mode-hook' and then |
386 | `dsssl-mode-hook' and inserts the value of `dsssl-sgml-declaration' if | |
387 | that variable's value is a string." | |
ba03d0d9 | 388 | (setq-local page-delimiter "^;;;") ; ^L not valid SGML char |
1367ff3a | 389 | ;; Insert a suitable SGML declaration into an empty buffer. |
150bbae7 | 390 | ;; FIXME: This should use `auto-insert-alist' instead. |
1367ff3a | 391 | (and (zerop (buffer-size)) |
26d05e22 | 392 | (stringp dsssl-sgml-declaration) |
1367ff3a RS |
393 | (not buffer-read-only) |
394 | (insert dsssl-sgml-declaration)) | |
22dcd0d1 DL |
395 | (setq font-lock-defaults '(dsssl-font-lock-keywords |
396 | nil t (("+-*/.<>=?$%_&~^:" . "w")) | |
397 | beginning-of-defun | |
398 | (font-lock-mark-block-function . mark-defun))) | |
ba03d0d9 CY |
399 | (setq-local add-log-current-defun-function #'lisp-current-defun-name) |
400 | (setq-local imenu-case-fold-search nil) | |
c0b08eb0 | 401 | (setq imenu-generic-expression dsssl-imenu-generic-expression) |
ba03d0d9 | 402 | (setq-local imenu-syntax-alist '(("+-*/.<>=?$%_&~^:" . "w")))) |
1367ff3a RS |
403 | |
404 | ;; Extra syntax for DSSSL. This isn't separated from Scheme, but | |
405 | ;; shouldn't cause much trouble in scheme-mode. | |
406 | (put 'element 'scheme-indent-function 1) | |
407 | (put 'mode 'scheme-indent-function 1) | |
408 | (put 'with-mode 'scheme-indent-function 1) | |
2f5029f3 | 409 | (put 'make 'scheme-indent-function 1) |
26d05e22 RS |
410 | (put 'style 'scheme-indent-function 1) |
411 | (put 'root 'scheme-indent-function 1) | |
67ed8fcd | 412 | (put 'λ 'scheme-indent-function 1) |
1367ff3a RS |
413 | |
414 | (defvar dsssl-font-lock-keywords | |
26d05e22 RS |
415 | (eval-when-compile |
416 | (list | |
417 | ;; Similar to Scheme | |
418 | (list "(\\(define\\(-\\w+\\)?\\)\\>[ ]*\\\((?\\)\\(\\sw+\\)\\>" | |
419 | '(1 font-lock-keyword-face) | |
420 | '(4 font-lock-function-name-face)) | |
421 | (cons | |
422 | (concat "(\\(" | |
423 | ;; (make-regexp '("case" "cond" "else" "if" "lambda" | |
424 | ;; "let" "let*" "letrec" "and" "or" "map" "with-mode")) | |
425 | "and\\|c\\(ase\\|ond\\)\\|else\\|if\\|" | |
426 | "l\\(ambda\\|et\\(\\|*\\|rec\\)\\)\\|map\\|or\\|with-mode" | |
427 | "\\)\\>") | |
428 | 1) | |
429 | ;; DSSSL syntax | |
430 | '("(\\(element\\|mode\\|declare-\\w+\\)\\>[ ]*\\(\\sw+\\)" | |
431 | (1 font-lock-keyword-face) | |
432 | (2 font-lock-type-face)) | |
433 | '("(\\(element\\)\\>[ ]*(\\(\\S)+\\))" | |
434 | (1 font-lock-keyword-face) | |
435 | (2 font-lock-type-face)) | |
883212ce | 436 | '("\\<\\sw+:\\>" . font-lock-constant-face) ; trailing `:' c.f. scheme |
26d05e22 RS |
437 | ;; SGML markup (from sgml-mode) : |
438 | '("<\\([!?][-a-z0-9]+\\)" 1 font-lock-keyword-face) | |
439 | '("<\\(/?[-a-z0-9]+\\)" 1 font-lock-function-name-face))) | |
1367ff3a RS |
440 | "Default expressions to highlight in DSSSL mode.") |
441 | ||
ac5b21ac | 442 | \f |
1367ff3a RS |
443 | (defvar calculate-lisp-indent-last-sexp) |
444 | ||
b7556719 GM |
445 | |
446 | ;; FIXME this duplicates almost all of lisp-indent-function. | |
447 | ;; Extract common code to a subroutine. | |
ac5b21ac | 448 | (defun scheme-indent-function (indent-point state) |
b7556719 GM |
449 | "Scheme mode function for the value of the variable `lisp-indent-function'. |
450 | This behaves like the function `lisp-indent-function', except that: | |
451 | ||
452 | i) it checks for a non-nil value of the property `scheme-indent-function' | |
dd4b63a6 | 453 | \(or the deprecated `scheme-indent-hook'), rather than `lisp-indent-function'. |
b7556719 | 454 | |
b026d240 | 455 | ii) if that property specifies a function, it is called with three |
b7556719 GM |
456 | arguments (not two), the third argument being the default (i.e., current) |
457 | indentation." | |
ac5b21ac | 458 | (let ((normal-indent (current-column))) |
1367ff3a RS |
459 | (goto-char (1+ (elt state 1))) |
460 | (parse-partial-sexp (point) calculate-lisp-indent-last-sexp 0 t) | |
461 | (if (and (elt state 2) | |
462 | (not (looking-at "\\sw\\|\\s_"))) | |
4696802b | 463 | ;; car of form doesn't seem to be a symbol |
1367ff3a RS |
464 | (progn |
465 | (if (not (> (save-excursion (forward-line 1) (point)) | |
466 | calculate-lisp-indent-last-sexp)) | |
467 | (progn (goto-char calculate-lisp-indent-last-sexp) | |
468 | (beginning-of-line) | |
469 | (parse-partial-sexp (point) | |
470 | calculate-lisp-indent-last-sexp 0 t))) | |
471 | ;; Indent under the list or under the first sexp on the same | |
472 | ;; line as calculate-lisp-indent-last-sexp. Note that first | |
473 | ;; thing on that line has to be complete sexp since we are | |
474 | ;; inside the innermost containing sexp. | |
475 | (backward-prefix-chars) | |
476 | (current-column)) | |
477 | (let ((function (buffer-substring (point) | |
478 | (progn (forward-sexp 1) (point)))) | |
479 | method) | |
480 | (setq method (or (get (intern-soft function) 'scheme-indent-function) | |
481 | (get (intern-soft function) 'scheme-indent-hook))) | |
482 | (cond ((or (eq method 'defun) | |
483 | (and (null method) | |
484 | (> (length function) 3) | |
485 | (string-match "\\`def" function))) | |
486 | (lisp-indent-defform state indent-point)) | |
487 | ((integerp method) | |
488 | (lisp-indent-specform method state | |
489 | indent-point normal-indent)) | |
490 | (method | |
61185f42 | 491 | (funcall method state indent-point normal-indent))))))) |
1367ff3a | 492 | |
ac5b21ac RS |
493 | \f |
494 | ;;; Let is different in Scheme | |
495 | ||
d5031a2a LL |
496 | ;; (defun scheme-would-be-symbol (string) |
497 | ;; (not (string-equal (substring string 0 1) "("))) | |
ac5b21ac | 498 | |
d5031a2a LL |
499 | ;; (defun scheme-next-sexp-as-string () |
500 | ;; ;; Assumes that it is protected by a save-excursion | |
501 | ;; (forward-sexp 1) | |
502 | ;; (let ((the-end (point))) | |
503 | ;; (backward-sexp 1) | |
504 | ;; (buffer-substring (point) the-end))) | |
ac5b21ac RS |
505 | |
506 | ;; This is correct but too slow. | |
507 | ;; The one below works almost always. | |
508 | ;;(defun scheme-let-indent (state indent-point) | |
d5031a2a | 509 | ;; (if (scheme-would-be-symbol (scheme-next-sexp-as-string)) |
ac5b21ac RS |
510 | ;; (scheme-indent-specform 2 state indent-point) |
511 | ;; (scheme-indent-specform 1 state indent-point))) | |
512 | ||
61185f42 | 513 | (defun scheme-let-indent (state indent-point normal-indent) |
ac5b21ac | 514 | (skip-chars-forward " \t") |
61361a07 | 515 | (if (looking-at "[-a-zA-Z0-9+*/?!@$%^&_:~]") |
61185f42 KH |
516 | (lisp-indent-specform 2 state indent-point normal-indent) |
517 | (lisp-indent-specform 1 state indent-point normal-indent))) | |
ac5b21ac RS |
518 | |
519 | ;; (put 'begin 'scheme-indent-function 0), say, causes begin to be indented | |
520 | ;; like defun if the first form is placed on the next line, otherwise | |
521 | ;; it is indented like any other form (i.e. forms line up under first). | |
522 | ||
523 | (put 'begin 'scheme-indent-function 0) | |
524 | (put 'case 'scheme-indent-function 1) | |
525 | (put 'delay 'scheme-indent-function 0) | |
526 | (put 'do 'scheme-indent-function 2) | |
527 | (put 'lambda 'scheme-indent-function 1) | |
528 | (put 'let 'scheme-indent-function 'scheme-let-indent) | |
529 | (put 'let* 'scheme-indent-function 1) | |
530 | (put 'letrec 'scheme-indent-function 1) | |
12cf1a12 TTN |
531 | (put 'let-values 'scheme-indent-function 1) ; SRFI 11 |
532 | (put 'let*-values 'scheme-indent-function 1) ; SRFI 11 | |
2b20743d DL |
533 | (put 'sequence 'scheme-indent-function 0) ; SICP, not r4rs |
534 | (put 'let-syntax 'scheme-indent-function 1) | |
535 | (put 'letrec-syntax 'scheme-indent-function 1) | |
536 | (put 'syntax-rules 'scheme-indent-function 1) | |
0ec2c350 | 537 | (put 'syntax-case 'scheme-indent-function 2) ; not r5rs |
12e5e86e | 538 | (put 'library 'scheme-indent-function 1) ; R6RS |
ac5b21ac RS |
539 | |
540 | (put 'call-with-input-file 'scheme-indent-function 1) | |
541 | (put 'with-input-from-file 'scheme-indent-function 1) | |
542 | (put 'with-input-from-port 'scheme-indent-function 1) | |
543 | (put 'call-with-output-file 'scheme-indent-function 1) | |
544 | (put 'with-output-to-file 'scheme-indent-function 1) | |
545 | (put 'with-output-to-port 'scheme-indent-function 1) | |
2b20743d DL |
546 | (put 'call-with-values 'scheme-indent-function 1) ; r5rs? |
547 | (put 'dynamic-wind 'scheme-indent-function 3) ; r5rs? | |
ac5b21ac RS |
548 | \f |
549 | ;;;; MIT Scheme specific indentation. | |
550 | ||
551 | (if scheme-mit-dialect | |
552 | (progn | |
553 | (put 'fluid-let 'scheme-indent-function 1) | |
554 | (put 'in-package 'scheme-indent-function 1) | |
ac5b21ac RS |
555 | (put 'local-declare 'scheme-indent-function 1) |
556 | (put 'macro 'scheme-indent-function 1) | |
557 | (put 'make-environment 'scheme-indent-function 0) | |
558 | (put 'named-lambda 'scheme-indent-function 1) | |
559 | (put 'using-syntax 'scheme-indent-function 1) | |
560 | ||
561 | (put 'with-input-from-string 'scheme-indent-function 1) | |
562 | (put 'with-output-to-string 'scheme-indent-function 0) | |
563 | (put 'with-values 'scheme-indent-function 1) | |
564 | ||
565 | (put 'syntax-table-define 'scheme-indent-function 2) | |
566 | (put 'list-transform-positive 'scheme-indent-function 1) | |
567 | (put 'list-transform-negative 'scheme-indent-function 1) | |
568 | (put 'list-search-positive 'scheme-indent-function 1) | |
569 | (put 'list-search-negative 'scheme-indent-function 1) | |
570 | ||
571 | (put 'access-components 'scheme-indent-function 1) | |
572 | (put 'assignment-components 'scheme-indent-function 1) | |
573 | (put 'combination-components 'scheme-indent-function 1) | |
574 | (put 'comment-components 'scheme-indent-function 1) | |
575 | (put 'conditional-components 'scheme-indent-function 1) | |
576 | (put 'disjunction-components 'scheme-indent-function 1) | |
577 | (put 'declaration-components 'scheme-indent-function 1) | |
578 | (put 'definition-components 'scheme-indent-function 1) | |
579 | (put 'delay-components 'scheme-indent-function 1) | |
580 | (put 'in-package-components 'scheme-indent-function 1) | |
581 | (put 'lambda-components 'scheme-indent-function 1) | |
582 | (put 'lambda-components* 'scheme-indent-function 1) | |
583 | (put 'lambda-components** 'scheme-indent-function 1) | |
584 | (put 'open-block-components 'scheme-indent-function 1) | |
585 | (put 'pathname-components 'scheme-indent-function 1) | |
586 | (put 'procedure-components 'scheme-indent-function 1) | |
587 | (put 'sequence-components 'scheme-indent-function 1) | |
588 | (put 'unassigned\?-components 'scheme-indent-function 1) | |
589 | (put 'unbound\?-components 'scheme-indent-function 1) | |
590 | (put 'variable-components 'scheme-indent-function 1))) | |
49116ac0 JB |
591 | |
592 | (provide 'scheme) | |
c88ab9ce ER |
593 | |
594 | ;;; scheme.el ends here |