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6594deb0 ER |
1 | ;;; lisp-mode.el --- Lisp mode, and its idiosyncratic commands. |
2 | ||
a90256cc BP |
3 | ;; Copyright (C) 1985 Free Software Foundation, Inc. |
4 | ||
5 | ;; This file is part of GNU Emacs. | |
6 | ||
7 | ;; GNU Emacs is free software; you can redistribute it and/or modify | |
8 | ;; it under the terms of the GNU General Public License as published by | |
9 | ;; the Free Software Foundation; either version 1, or (at your option) | |
10 | ;; any later version. | |
11 | ||
12 | ;; GNU Emacs is distributed in the hope that it will be useful, | |
13 | ;; but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | ;; GNU General Public License for more details. | |
16 | ||
17 | ;; You should have received a copy of the GNU General Public License | |
18 | ;; along with GNU Emacs; see the file COPYING. If not, write to | |
19 | ;; the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. | |
20 | ||
a90256cc BP |
21 | (defvar lisp-mode-syntax-table nil "") |
22 | (defvar emacs-lisp-mode-syntax-table nil "") | |
23 | (defvar lisp-mode-abbrev-table nil "") | |
24 | ||
25 | (if (not emacs-lisp-mode-syntax-table) | |
26 | (let ((i 0)) | |
27 | (setq emacs-lisp-mode-syntax-table (make-syntax-table)) | |
28 | (while (< i ?0) | |
29 | (modify-syntax-entry i "_ " emacs-lisp-mode-syntax-table) | |
30 | (setq i (1+ i))) | |
31 | (setq i (1+ ?9)) | |
32 | (while (< i ?A) | |
33 | (modify-syntax-entry i "_ " emacs-lisp-mode-syntax-table) | |
34 | (setq i (1+ i))) | |
35 | (setq i (1+ ?Z)) | |
36 | (while (< i ?a) | |
37 | (modify-syntax-entry i "_ " emacs-lisp-mode-syntax-table) | |
38 | (setq i (1+ i))) | |
39 | (setq i (1+ ?z)) | |
40 | (while (< i 128) | |
41 | (modify-syntax-entry i "_ " emacs-lisp-mode-syntax-table) | |
42 | (setq i (1+ i))) | |
43 | (modify-syntax-entry ? " " emacs-lisp-mode-syntax-table) | |
44 | (modify-syntax-entry ?\t " " emacs-lisp-mode-syntax-table) | |
45 | (modify-syntax-entry ?\n "> " emacs-lisp-mode-syntax-table) | |
46 | (modify-syntax-entry ?\f "> " emacs-lisp-mode-syntax-table) | |
47 | (modify-syntax-entry ?\; "< " emacs-lisp-mode-syntax-table) | |
48 | (modify-syntax-entry ?` "' " emacs-lisp-mode-syntax-table) | |
49 | (modify-syntax-entry ?' "' " emacs-lisp-mode-syntax-table) | |
50 | (modify-syntax-entry ?, "' " emacs-lisp-mode-syntax-table) | |
51 | ;; Used to be singlequote; changed for flonums. | |
52 | (modify-syntax-entry ?. "_ " emacs-lisp-mode-syntax-table) | |
53 | (modify-syntax-entry ?# "' " emacs-lisp-mode-syntax-table) | |
54 | (modify-syntax-entry ?\" "\" " emacs-lisp-mode-syntax-table) | |
55 | (modify-syntax-entry ?\\ "\\ " emacs-lisp-mode-syntax-table) | |
56 | (modify-syntax-entry ?\( "() " emacs-lisp-mode-syntax-table) | |
57 | (modify-syntax-entry ?\) ")( " emacs-lisp-mode-syntax-table) | |
58 | (modify-syntax-entry ?\[ "(] " emacs-lisp-mode-syntax-table) | |
59 | (modify-syntax-entry ?\] ")[ " emacs-lisp-mode-syntax-table))) | |
60 | ||
ecca85de JB |
61 | (if (not lisp-mode-syntax-table) |
62 | (progn (setq lisp-mode-syntax-table | |
63 | (copy-syntax-table emacs-lisp-mode-syntax-table)) | |
64 | (modify-syntax-entry ?\| "\" " lisp-mode-syntax-table) | |
65 | (modify-syntax-entry ?\[ "_ " lisp-mode-syntax-table) | |
66 | (modify-syntax-entry ?\] "_ " lisp-mode-syntax-table))) | |
67 | ||
a90256cc BP |
68 | (define-abbrev-table 'lisp-mode-abbrev-table ()) |
69 | ||
70 | (defun lisp-mode-variables (lisp-syntax) | |
71 | (cond (lisp-syntax | |
a90256cc BP |
72 | (set-syntax-table lisp-mode-syntax-table))) |
73 | (setq local-abbrev-table lisp-mode-abbrev-table) | |
74 | (make-local-variable 'paragraph-start) | |
75 | (setq paragraph-start (concat "^$\\|" page-delimiter)) | |
76 | (make-local-variable 'paragraph-separate) | |
77 | (setq paragraph-separate paragraph-start) | |
78 | (make-local-variable 'paragraph-ignore-fill-prefix) | |
79 | (setq paragraph-ignore-fill-prefix t) | |
80 | (make-local-variable 'indent-line-function) | |
81 | (setq indent-line-function 'lisp-indent-line) | |
82 | (make-local-variable 'indent-region-function) | |
83 | (setq indent-region-function 'lisp-indent-region) | |
84 | (make-local-variable 'parse-sexp-ignore-comments) | |
85 | (setq parse-sexp-ignore-comments t) | |
86 | (make-local-variable 'comment-start) | |
87 | (setq comment-start ";") | |
88 | (make-local-variable 'comment-start-skip) | |
89 | (setq comment-start-skip ";+ *") | |
90 | (make-local-variable 'comment-column) | |
91 | (setq comment-column 40) | |
92 | (make-local-variable 'comment-indent-hook) | |
93 | (setq comment-indent-hook 'lisp-comment-indent)) | |
94 | \f | |
95 | (defvar shared-lisp-mode-map () | |
96 | "Keymap for commands shared by all sorts of Lisp modes.") | |
97 | ||
98 | (if shared-lisp-mode-map | |
99 | () | |
100 | (setq shared-lisp-mode-map (make-sparse-keymap)) | |
101 | (define-key shared-lisp-mode-map "\e\C-q" 'indent-sexp) | |
102 | (define-key shared-lisp-mode-map "\177" 'backward-delete-char-untabify) | |
103 | (define-key shared-lisp-mode-map "\t" 'lisp-indent-line)) | |
104 | ||
105 | (defvar emacs-lisp-mode-map () | |
106 | "Keymap for Emacs Lisp mode. | |
107 | All commands in shared-lisp-mode-map are inherited by this map.") | |
108 | ||
109 | (if emacs-lisp-mode-map | |
110 | () | |
111 | (setq emacs-lisp-mode-map | |
112 | (nconc (make-sparse-keymap) shared-lisp-mode-map)) | |
113 | (define-key emacs-lisp-mode-map "\e\C-x" 'eval-defun)) | |
114 | ||
115 | (defun emacs-lisp-mode () | |
116 | "Major mode for editing Lisp code to run in Emacs. | |
117 | Commands: | |
118 | Delete converts tabs to spaces as it moves back. | |
119 | Blank lines separate paragraphs. Semicolons start comments. | |
120 | \\{emacs-lisp-mode-map} | |
121 | Entry to this mode calls the value of `emacs-lisp-mode-hook' | |
122 | if that value is non-nil." | |
123 | (interactive) | |
124 | (kill-all-local-variables) | |
125 | (use-local-map emacs-lisp-mode-map) | |
126 | (set-syntax-table emacs-lisp-mode-syntax-table) | |
127 | (setq major-mode 'emacs-lisp-mode) | |
128 | (setq mode-name "Emacs-Lisp") | |
129 | (lisp-mode-variables nil) | |
130 | (run-hooks 'emacs-lisp-mode-hook)) | |
131 | ||
132 | (defvar lisp-mode-map () | |
133 | "Keymap for ordinary Lisp mode. | |
134 | All commands in `shared-lisp-mode-map' are inherited by this map.") | |
135 | ||
136 | (if lisp-mode-map | |
137 | () | |
138 | (setq lisp-mode-map | |
139 | (nconc (make-sparse-keymap) shared-lisp-mode-map)) | |
140 | (define-key lisp-mode-map "\e\C-x" 'lisp-send-defun) | |
141 | (define-key lisp-mode-map "\C-c\C-l" 'run-lisp)) | |
142 | ||
143 | (defun lisp-mode () | |
144 | "Major mode for editing Lisp code for Lisps other than GNU Emacs Lisp. | |
145 | Commands: | |
146 | Delete converts tabs to spaces as it moves back. | |
147 | Blank lines separate paragraphs. Semicolons start comments. | |
148 | \\{lisp-mode-map} | |
149 | Note that `run-lisp' may be used either to start an inferior Lisp job | |
150 | or to switch back to an existing one. | |
151 | ||
152 | Entry to this mode calls the value of `lisp-mode-hook' | |
153 | if that value is non-nil." | |
154 | (interactive) | |
155 | (kill-all-local-variables) | |
156 | (use-local-map lisp-mode-map) | |
157 | (setq major-mode 'lisp-mode) | |
158 | (setq mode-name "Lisp") | |
159 | (lisp-mode-variables t) | |
160 | (set-syntax-table lisp-mode-syntax-table) | |
161 | (run-hooks 'lisp-mode-hook)) | |
162 | ||
163 | ;; This will do unless shell.el is loaded. | |
164 | (defun lisp-send-defun nil | |
165 | "Send the current defun to the Lisp process made by \\[run-lisp]." | |
166 | (interactive) | |
167 | (error "Process lisp does not exist")) | |
168 | ||
169 | (defvar lisp-interaction-mode-map () | |
170 | "Keymap for Lisp Interaction moe. | |
171 | All commands in `shared-lisp-mode-map' are inherited by this map.") | |
172 | ||
173 | (if lisp-interaction-mode-map | |
174 | () | |
175 | (setq lisp-interaction-mode-map | |
176 | (nconc (make-sparse-keymap) shared-lisp-mode-map)) | |
177 | (define-key lisp-interaction-mode-map "\e\C-x" 'eval-defun) | |
178 | (define-key lisp-interaction-mode-map "\n" 'eval-print-last-sexp)) | |
179 | ||
180 | (defun lisp-interaction-mode () | |
181 | "Major mode for typing and evaluating Lisp forms. | |
182 | Like Lisp mode except that \\[eval-print-last-sexp] evals the Lisp expression | |
183 | before point, and prints its value into the buffer, advancing point. | |
184 | ||
185 | Commands: | |
186 | Delete converts tabs to spaces as it moves back. | |
187 | Paragraphs are separated only by blank lines. | |
188 | Semicolons start comments. | |
189 | \\{lisp-interaction-mode-map} | |
190 | Entry to this mode calls the value of `lisp-interaction-mode-hook' | |
191 | if that value is non-nil." | |
192 | (interactive) | |
193 | (kill-all-local-variables) | |
194 | (use-local-map lisp-interaction-mode-map) | |
195 | (setq major-mode 'lisp-interaction-mode) | |
196 | (setq mode-name "Lisp Interaction") | |
197 | (set-syntax-table emacs-lisp-mode-syntax-table) | |
198 | (lisp-mode-variables nil) | |
199 | (run-hooks 'lisp-interaction-mode-hook)) | |
200 | ||
121f0d57 | 201 | (defun eval-print-last-sexp () |
a90256cc | 202 | "Evaluate sexp before point; print value into current buffer." |
121f0d57 | 203 | (interactive) |
f798d950 JB |
204 | (let ((standard-output (current-buffer))) |
205 | (terpri) | |
206 | (eval-last-sexp t) | |
207 | (terpri))) | |
a90256cc BP |
208 | \f |
209 | (defun eval-last-sexp (arg) | |
210 | "Evaluate sexp before point; print value in minibuffer. | |
211 | With argument, print output into current buffer." | |
212 | (interactive "P") | |
19b2f8f1 RM |
213 | (let ((standard-output (if arg (current-buffer) t))) |
214 | (prin1 (let ((stab (syntax-table))) | |
215 | (eval (unwind-protect | |
216 | (save-excursion | |
217 | (set-syntax-table emacs-lisp-mode-syntax-table) | |
218 | (forward-sexp -1) | |
219 | (read (current-buffer))) | |
220 | (set-syntax-table stab))))))) | |
a90256cc BP |
221 | |
222 | (defun eval-defun (arg) | |
121f0d57 RM |
223 | "Evaluate defun that point is in or before. |
224 | Print value in minibuffer. | |
225 | With argument, insert value in current buffer after the defun." | |
a90256cc | 226 | (interactive "P") |
19b2f8f1 RM |
227 | (let ((standard-output (if arg (current-buffer) t))) |
228 | (prin1 (eval (save-excursion | |
229 | (end-of-defun) | |
230 | (beginning-of-defun) | |
231 | (read (current-buffer))))))) | |
a90256cc BP |
232 | \f |
233 | (defun lisp-comment-indent () | |
234 | (if (looking-at "\\s<\\s<\\s<") | |
235 | (current-column) | |
236 | (if (looking-at "\\s<\\s<") | |
237 | (let ((tem (calculate-lisp-indent))) | |
238 | (if (listp tem) (car tem) tem)) | |
239 | (skip-chars-backward " \t") | |
240 | (max (if (bolp) 0 (1+ (current-column))) | |
241 | comment-column)))) | |
242 | ||
243 | (defconst lisp-indent-offset nil "") | |
244 | (defconst lisp-indent-function 'lisp-indent-function "") | |
245 | ||
246 | (defun lisp-indent-line (&optional whole-exp) | |
247 | "Indent current line as Lisp code. | |
248 | With argument, indent any additional lines of the same expression | |
249 | rigidly along with this one." | |
250 | (interactive "P") | |
251 | (let ((indent (calculate-lisp-indent)) shift-amt beg end | |
252 | (pos (- (point-max) (point)))) | |
253 | (beginning-of-line) | |
254 | (setq beg (point)) | |
255 | (skip-chars-forward " \t") | |
256 | (if (looking-at "\\s<\\s<\\s<") | |
257 | ;; Don't alter indentation of a ;;; comment line. | |
328561fc | 258 | (goto-char (- (point-max) pos)) |
a90256cc BP |
259 | (if (and (looking-at "\\s<") (not (looking-at "\\s<\\s<"))) |
260 | ;; Single-semicolon comment lines should be indented | |
261 | ;; as comment lines, not as code. | |
262 | (progn (indent-for-comment) (forward-char -1)) | |
263 | (if (listp indent) (setq indent (car indent))) | |
264 | (setq shift-amt (- indent (current-column))) | |
265 | (if (zerop shift-amt) | |
266 | nil | |
267 | (delete-region beg (point)) | |
268 | (indent-to indent))) | |
269 | ;; If initial point was within line's indentation, | |
270 | ;; position after the indentation. Else stay at same point in text. | |
271 | (if (> (- (point-max) pos) (point)) | |
272 | (goto-char (- (point-max) pos))) | |
273 | ;; If desired, shift remaining lines of expression the same amount. | |
274 | (and whole-exp (not (zerop shift-amt)) | |
275 | (save-excursion | |
276 | (goto-char beg) | |
277 | (forward-sexp 1) | |
278 | (setq end (point)) | |
279 | (goto-char beg) | |
280 | (forward-line 1) | |
281 | (setq beg (point)) | |
282 | (> end beg)) | |
283 | (indent-code-rigidly beg end shift-amt))))) | |
284 | ||
285 | (defun calculate-lisp-indent (&optional parse-start) | |
286 | "Return appropriate indentation for current line as Lisp code. | |
287 | In usual case returns an integer: the column to indent to. | |
288 | Can instead return a list, whose car is the column to indent to. | |
289 | This means that following lines at the same level of indentation | |
290 | should not necessarily be indented the same way. | |
291 | The second element of the list is the buffer position | |
292 | of the start of the containing expression." | |
293 | (save-excursion | |
294 | (beginning-of-line) | |
295 | (let ((indent-point (point)) | |
296 | state paren-depth | |
297 | ;; setting this to a number inhibits calling hook | |
298 | (desired-indent nil) | |
299 | (retry t) | |
300 | last-sexp containing-sexp) | |
301 | (if parse-start | |
302 | (goto-char parse-start) | |
303 | (beginning-of-defun)) | |
304 | ;; Find outermost containing sexp | |
305 | (while (< (point) indent-point) | |
306 | (setq state (parse-partial-sexp (point) indent-point 0))) | |
307 | ;; Find innermost containing sexp | |
308 | (while (and retry | |
309 | state | |
310 | (> (setq paren-depth (elt state 0)) 0)) | |
311 | (setq retry nil) | |
312 | (setq last-sexp (elt state 2)) | |
313 | (setq containing-sexp (elt state 1)) | |
314 | ;; Position following last unclosed open. | |
315 | (goto-char (1+ containing-sexp)) | |
316 | ;; Is there a complete sexp since then? | |
317 | (if (and last-sexp (> last-sexp (point))) | |
318 | ;; Yes, but is there a containing sexp after that? | |
319 | (let ((peek (parse-partial-sexp last-sexp indent-point 0))) | |
320 | (if (setq retry (car (cdr peek))) (setq state peek))))) | |
321 | (if retry | |
322 | nil | |
323 | ;; Innermost containing sexp found | |
324 | (goto-char (1+ containing-sexp)) | |
325 | (if (not last-sexp) | |
326 | ;; indent-point immediately follows open paren. | |
327 | ;; Don't call hook. | |
328 | (setq desired-indent (current-column)) | |
329 | ;; Find the start of first element of containing sexp. | |
330 | (parse-partial-sexp (point) last-sexp 0 t) | |
331 | (cond ((looking-at "\\s(") | |
332 | ;; First element of containing sexp is a list. | |
333 | ;; Indent under that list. | |
334 | ) | |
335 | ((> (save-excursion (forward-line 1) (point)) | |
336 | last-sexp) | |
337 | ;; This is the first line to start within the containing sexp. | |
338 | ;; It's almost certainly a function call. | |
339 | (if (= (point) last-sexp) | |
340 | ;; Containing sexp has nothing before this line | |
341 | ;; except the first element. Indent under that element. | |
342 | nil | |
343 | ;; Skip the first element, find start of second (the first | |
344 | ;; argument of the function call) and indent under. | |
345 | (progn (forward-sexp 1) | |
346 | (parse-partial-sexp (point) last-sexp 0 t))) | |
347 | (backward-prefix-chars)) | |
348 | (t | |
349 | ;; Indent beneath first sexp on same line as last-sexp. | |
350 | ;; Again, it's almost certainly a function call. | |
351 | (goto-char last-sexp) | |
352 | (beginning-of-line) | |
353 | (parse-partial-sexp (point) last-sexp 0 t) | |
354 | (backward-prefix-chars))))) | |
355 | ;; Point is at the point to indent under unless we are inside a string. | |
356 | ;; Call indentation hook except when overriden by lisp-indent-offset | |
357 | ;; or if the desired indentation has already been computed. | |
358 | (let ((normal-indent (current-column))) | |
359 | (cond ((elt state 3) | |
360 | ;; Inside a string, don't change indentation. | |
361 | (goto-char indent-point) | |
362 | (skip-chars-forward " \t") | |
363 | (current-column)) | |
364 | ((and (integerp lisp-indent-offset) containing-sexp) | |
365 | ;; Indent by constant offset | |
366 | (goto-char containing-sexp) | |
367 | (+ (current-column) lisp-indent-offset)) | |
368 | (desired-indent) | |
369 | ((and (boundp 'lisp-indent-function) | |
370 | lisp-indent-function | |
371 | (not retry)) | |
372 | (or (funcall lisp-indent-function indent-point state) | |
373 | normal-indent)) | |
374 | (t | |
f30ff39f | 375 | normal-indent)))))) |
a90256cc BP |
376 | |
377 | (defun lisp-indent-function (indent-point state) | |
378 | (let ((normal-indent (current-column))) | |
379 | (goto-char (1+ (elt state 1))) | |
380 | (parse-partial-sexp (point) last-sexp 0 t) | |
381 | (if (and (elt state 2) | |
382 | (not (looking-at "\\sw\\|\\s_"))) | |
383 | ;; car of form doesn't seem to be a a symbol | |
384 | (progn | |
385 | (if (not (> (save-excursion (forward-line 1) (point)) | |
386 | last-sexp)) | |
387 | (progn (goto-char last-sexp) | |
388 | (beginning-of-line) | |
389 | (parse-partial-sexp (point) last-sexp 0 t))) | |
390 | ;; Indent under the list or under the first sexp on the | |
391 | ;; same line as last-sexp. Note that first thing on that | |
392 | ;; line has to be complete sexp since we are inside the | |
393 | ;; innermost containing sexp. | |
394 | (backward-prefix-chars) | |
395 | (current-column)) | |
396 | (let ((function (buffer-substring (point) | |
397 | (progn (forward-sexp 1) (point)))) | |
398 | method) | |
399 | (setq method (get (intern-soft function) 'lisp-indent-function)) | |
400 | (cond ((or (eq method 'defun) | |
401 | (and (null method) | |
402 | (> (length function) 3) | |
403 | (string-match "\\`def" function))) | |
404 | (lisp-indent-defform state indent-point)) | |
405 | ((integerp method) | |
406 | (lisp-indent-specform method state | |
407 | indent-point normal-indent)) | |
408 | (method | |
409 | (funcall method state indent-point))))))) | |
410 | ||
411 | (defconst lisp-body-indent 2 "") | |
412 | ||
413 | (defun lisp-indent-specform (count state indent-point normal-indent) | |
414 | (let ((containing-form-start (elt state 1)) | |
415 | (i count) | |
416 | body-indent containing-form-column) | |
417 | ;; Move to the start of containing form, calculate indentation | |
418 | ;; to use for non-distinguished forms (> count), and move past the | |
419 | ;; function symbol. lisp-indent-function guarantees that there is at | |
420 | ;; least one word or symbol character following open paren of containing | |
421 | ;; form. | |
422 | (goto-char containing-form-start) | |
423 | (setq containing-form-column (current-column)) | |
424 | (setq body-indent (+ lisp-body-indent containing-form-column)) | |
425 | (forward-char 1) | |
426 | (forward-sexp 1) | |
427 | ;; Now find the start of the last form. | |
428 | (parse-partial-sexp (point) indent-point 1 t) | |
429 | (while (and (< (point) indent-point) | |
430 | (condition-case () | |
431 | (progn | |
432 | (setq count (1- count)) | |
433 | (forward-sexp 1) | |
434 | (parse-partial-sexp (point) indent-point 1 t)) | |
435 | (error nil)))) | |
436 | ;; Point is sitting on first character of last (or count) sexp. | |
437 | (if (> count 0) | |
438 | ;; A distinguished form. If it is the first or second form use double | |
439 | ;; lisp-body-indent, else normal indent. With lisp-body-indent bound | |
440 | ;; to 2 (the default), this just happens to work the same with if as | |
441 | ;; the older code, but it makes unwind-protect, condition-case, | |
442 | ;; with-output-to-temp-buffer, et. al. much more tasteful. The older, | |
443 | ;; less hacked, behavior can be obtained by replacing below with | |
444 | ;; (list normal-indent containing-form-start). | |
445 | (if (<= (- i count) 1) | |
446 | (list (+ containing-form-column (* 2 lisp-body-indent)) | |
447 | containing-form-start) | |
448 | (list normal-indent containing-form-start)) | |
449 | ;; A non-distinguished form. Use body-indent if there are no | |
450 | ;; distinguished forms and this is the first undistinguished form, | |
451 | ;; or if this is the first undistinguished form and the preceding | |
452 | ;; distinguished form has indentation at least as great as body-indent. | |
453 | (if (or (and (= i 0) (= count 0)) | |
454 | (and (= count 0) (<= body-indent normal-indent))) | |
455 | body-indent | |
456 | normal-indent)))) | |
457 | ||
458 | (defun lisp-indent-defform (state indent-point) | |
459 | (goto-char (car (cdr state))) | |
460 | (forward-line 1) | |
461 | (if (> (point) (car (cdr (cdr state)))) | |
462 | (progn | |
463 | (goto-char (car (cdr state))) | |
464 | (+ lisp-body-indent (current-column))))) | |
465 | ||
466 | \f | |
467 | ;; (put 'progn 'lisp-indent-function 0), say, causes progn to be indented | |
468 | ;; like defun if the first form is placed on the next line, otherwise | |
469 | ;; it is indented like any other form (i.e. forms line up under first). | |
470 | ||
471 | (put 'lambda 'lisp-indent-function 'defun) | |
472 | (put 'autoload 'lisp-indent-function 'defun) | |
473 | (put 'progn 'lisp-indent-function 0) | |
474 | (put 'prog1 'lisp-indent-function 1) | |
475 | (put 'prog2 'lisp-indent-function 2) | |
476 | (put 'save-excursion 'lisp-indent-function 0) | |
477 | (put 'save-window-excursion 'lisp-indent-function 0) | |
478 | (put 'save-restriction 'lisp-indent-function 0) | |
479 | (put 'let 'lisp-indent-function 1) | |
480 | (put 'let* 'lisp-indent-function 1) | |
481 | (put 'while 'lisp-indent-function 1) | |
482 | (put 'if 'lisp-indent-function 2) | |
483 | (put 'catch 'lisp-indent-function 1) | |
484 | (put 'condition-case 'lisp-indent-function 2) | |
485 | (put 'unwind-protect 'lisp-indent-function 1) | |
486 | (put 'with-output-to-temp-buffer 'lisp-indent-function 1) | |
487 | ||
488 | (defun indent-sexp (&optional endpos) | |
489 | "Indent each line of the list starting just after point. | |
490 | If optional arg ENDPOS is given, indent each line, stopping when | |
491 | ENDPOS is encountered." | |
492 | (interactive) | |
493 | (let ((indent-stack (list nil)) (next-depth 0) last-depth bol | |
494 | outer-loop-done inner-loop-done state this-indent | |
495 | (last-point (point))) | |
496 | ;; Get error now if we don't have a complete sexp after point. | |
497 | (save-excursion (forward-sexp 1)) | |
498 | (save-excursion | |
499 | (setq outer-loop-done nil) | |
500 | (while (if endpos (< (point) endpos) | |
501 | (not outer-loop-done)) | |
502 | (setq last-depth next-depth | |
503 | inner-loop-done nil) | |
504 | ;; Parse this line so we can learn the state | |
505 | ;; to indent the next line. | |
506 | ;; This inner loop goes through only once | |
507 | ;; unless a line ends inside a string. | |
508 | (while (and (not inner-loop-done) | |
509 | (not (setq outer-loop-done (eobp)))) | |
510 | (setq state (parse-partial-sexp (point) (progn (end-of-line) (point)) | |
511 | nil nil state)) | |
512 | (setq next-depth (car state)) | |
513 | ;; If the line contains a comment other than the sort | |
514 | ;; that is indented like code, | |
515 | ;; indent it now with indent-for-comment. | |
516 | ;; Comments indented like code are right already. | |
517 | ;; In any case clear the in-comment flag in the state | |
518 | ;; because parse-partial-sexp never sees the newlines. | |
519 | (if (car (nthcdr 4 state)) | |
520 | (progn (indent-for-comment) | |
521 | (end-of-line) | |
522 | (setcar (nthcdr 4 state) nil))) | |
523 | ;; If this line ends inside a string, | |
524 | ;; go straight to next line, remaining within the inner loop, | |
525 | ;; and turn off the \-flag. | |
526 | (if (car (nthcdr 3 state)) | |
527 | (progn | |
528 | (forward-line 1) | |
529 | (setcar (nthcdr 5 state) nil)) | |
530 | (setq inner-loop-done t))) | |
531 | (and endpos | |
532 | (while (<= next-depth 0) | |
533 | (setq indent-stack (append indent-stack (list nil))) | |
534 | (setq next-depth (1+ next-depth)) | |
535 | (setq last-depth (1+ last-depth)))) | |
536 | (or outer-loop-done | |
537 | (setq outer-loop-done (<= next-depth 0))) | |
538 | (if outer-loop-done | |
539 | nil | |
540 | (while (> last-depth next-depth) | |
541 | (setq indent-stack (cdr indent-stack) | |
542 | last-depth (1- last-depth))) | |
543 | (while (< last-depth next-depth) | |
544 | (setq indent-stack (cons nil indent-stack) | |
545 | last-depth (1+ last-depth))) | |
546 | ;; Now go to the next line and indent it according | |
547 | ;; to what we learned from parsing the previous one. | |
548 | (forward-line 1) | |
549 | (setq bol (point)) | |
550 | (skip-chars-forward " \t") | |
551 | ;; But not if the line is blank, or just a comment | |
552 | ;; (except for double-semi comments; indent them as usual). | |
553 | (if (or (eobp) (looking-at "\\s<\\|\n")) | |
554 | nil | |
555 | (if (and (car indent-stack) | |
556 | (>= (car indent-stack) 0)) | |
557 | (setq this-indent (car indent-stack)) | |
558 | (let ((val (calculate-lisp-indent | |
559 | (if (car indent-stack) (- (car indent-stack)) | |
560 | last-point)))) | |
561 | (if (integerp val) | |
562 | (setcar indent-stack | |
563 | (setq this-indent val)) | |
564 | (setcar indent-stack (- (car (cdr val)))) | |
565 | (setq this-indent (car val))))) | |
566 | (if (/= (current-column) this-indent) | |
567 | (progn (delete-region bol (point)) | |
568 | (indent-to this-indent))))) | |
569 | (or outer-loop-done | |
570 | (setq outer-loop-done (= (point) last-point)) | |
571 | (setq last-point (point))))))) | |
572 | ||
573 | ;; Indent every line whose first char is between START and END inclusive. | |
574 | (defun lisp-indent-region (start end) | |
575 | (save-excursion | |
576 | (goto-char start) | |
577 | (and (bolp) (not (eolp)) | |
578 | (lisp-indent-line)) | |
579 | (let ((endmark (copy-marker end))) | |
580 | (indent-sexp endmark) | |
581 | (set-marker endmark nil)))) | |
582 | \f | |
583 | (defun indent-code-rigidly (start end arg &optional nochange-regexp) | |
584 | "Indent all lines of code, starting in the region, sideways by ARG columns. | |
585 | Does not affect lines starting inside comments or strings, assuming that | |
586 | the start of the region is not inside them. | |
587 | ||
588 | Called from a program, takes args START, END, COLUMNS and NOCHANGE-REGEXP. | |
589 | The last is a regexp which, if matched at the beginning of a line, | |
590 | means don't indent that line." | |
591 | (interactive "r\np") | |
592 | (let (state) | |
593 | (save-excursion | |
594 | (goto-char end) | |
595 | (setq end (point-marker)) | |
596 | (goto-char start) | |
597 | (or (bolp) | |
598 | (setq state (parse-partial-sexp (point) | |
599 | (progn | |
600 | (forward-line 1) (point)) | |
601 | nil nil state))) | |
602 | (while (< (point) end) | |
603 | (or (car (nthcdr 3 state)) | |
604 | (and nochange-regexp | |
605 | (looking-at nochange-regexp)) | |
606 | ;; If line does not start in string, indent it | |
607 | (let ((indent (current-indentation))) | |
608 | (delete-region (point) (progn (skip-chars-forward " \t") (point))) | |
609 | (or (eolp) | |
610 | (indent-to (max 0 (+ indent arg)) 0)))) | |
611 | (setq state (parse-partial-sexp (point) | |
612 | (progn | |
613 | (forward-line 1) (point)) | |
614 | nil nil state)))))) | |
49116ac0 JB |
615 | |
616 | (provide 'lisp-mode) | |
617 | ||
6594deb0 | 618 | ;;; lisp-mode.el ends here |