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1 ;;; lisp-mode.el --- Lisp mode, and its idiosyncratic commands.
3 ;; Copyright (C) 1985 Free Software Foundation, Inc.
5 ;; Maintainer: FSF
6 ;; Keywords: lisp, languages
8 ;; This file is part of GNU Emacs.
10 ;; GNU Emacs is free software; you can redistribute it and/or modify
11 ;; it under the terms of the GNU General Public License as published by
12 ;; the Free Software Foundation; either version 2, or (at your option)
13 ;; any later version.
15 ;; GNU Emacs is distributed in the hope that it will be useful,
16 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
17 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 ;; GNU General Public License for more details.
20 ;; You should have received a copy of the GNU General Public License
21 ;; along with GNU Emacs; see the file COPYING. If not, write to
22 ;; the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
54 ;; Used to be singlequote; changed for flonums.
97 \f
102 ()
109 "Keymap for Emacs Lisp mode.
113 ()
119 "Major mode for editing Lisp code to run in Emacs.
120 Commands:
121 Delete converts tabs to spaces as it moves back.
122 Blank lines separate paragraphs. Semicolons start comments.
124 Entry to this mode calls the value of `emacs-lisp-mode-hook'
125 if that value is non-nil."
136 "Keymap for ordinary Lisp mode.
140 ()
147 "Major mode for editing Lisp code for Lisps other than GNU Emacs Lisp.
148 Commands:
149 Delete converts tabs to spaces as it moves back.
150 Blank lines separate paragraphs. Semicolons start comments.
152 Note that `run-lisp' may be used either to start an inferior Lisp job
153 or to switch back to an existing one.
155 Entry to this mode calls the value of `lisp-mode-hook'
156 if that value is non-nil."
166 ;; This will do unless shell.el is loaded.
173 "Keymap for Lisp Interaction moe.
177 ()
184 "Major mode for typing and evaluating Lisp forms.
186 before point, and prints its value into the buffer, advancing point.
188 Commands:
189 Delete converts tabs to spaces as it moves back.
190 Paragraphs are separated only by blank lines.
191 Semicolons start comments.
193 Entry to this mode calls the value of `lisp-interaction-mode-hook'
194 if that value is non-nil."
205 "Evaluate sexp before point; print value into current buffer."
211 \f
213 "Evaluate sexp before point; print value in minibuffer.
214 With argument, print output into current buffer."
226 "Evaluate defun that point is in or before.
227 Print value in minibuffer.
228 With argument, insert value in current buffer after the defun."
235 \f
244 comment-column))))
250 "Indent current line as Lisp code.
251 With argument, indent any additional lines of the same expression
252 rigidly along with this one."
260 ;; Don't alter indentation of a ;;; comment line.
263 ;; Single-semicolon comment lines should be indented
264 ;; as comment lines, not as code.
269 nil
272 ;; If initial point was within line's indentation,
273 ;; position after the indentation. Else stay at same point in text.
276 ;; If desired, shift remaining lines of expression the same amount.
289 "Return appropriate indentation for current line as Lisp code.
290 In usual case returns an integer: the column to indent to.
291 Can instead return a list, whose car is the column to indent to.
292 This means that following lines at the same level of indentation
293 should not necessarily be indented the same way.
294 The second element of the list is the buffer position
295 of the start of the containing expression."
299 state paren-depth
300 ;; setting this to a number inhibits calling hook
303 last-sexp containing-sexp)
307 ;; Find outermost containing sexp
310 ;; Find innermost containing sexp
312 state
317 ;; Position following last unclosed open.
319 ;; Is there a complete sexp since then?
321 ;; Yes, but is there a containing sexp after that?
325 nil
326 ;; Innermost containing sexp found
329 ;; indent-point immediately follows open paren.
330 ;; Don't call hook.
332 ;; Find the start of first element of containing sexp.
335 ;; First element of containing sexp is a list.
336 ;; Indent under that list.
337 )
339 last-sexp)
340 ;; This is the first line to start within the containing sexp.
341 ;; It's almost certainly a function call.
343 ;; Containing sexp has nothing before this line
344 ;; except the first element. Indent under that element.
345 nil
346 ;; Skip the first element, find start of second (the first
347 ;; argument of the function call) and indent under.
352 ;; Indent beneath first sexp on same line as last-sexp.
353 ;; Again, it's almost certainly a function call.
358 ;; Point is at the point to indent under unless we are inside a string.
359 ;; Call indentation hook except when overriden by lisp-indent-offset
360 ;; or if the desired indentation has already been computed.
363 ;; Inside a string, don't change indentation.
368 ;; Indent by constant offset
373 lisp-indent-function
376 normal-indent))
378 normal-indent))))))
386 ;; car of form doesn't seem to be a a symbol
389 last-sexp))
393 ;; Indent under the list or under the first sexp on the
394 ;; same line as last-sexp. Note that first thing on that
395 ;; line has to be complete sexp since we are inside the
396 ;; innermost containing sexp.
401 method)
410 indent-point normal-indent))
419 body-indent containing-form-column)
420 ;; Move to the start of containing form, calculate indentation
421 ;; to use for non-distinguished forms (> count), and move past the
422 ;; function symbol. lisp-indent-function guarantees that there is at
423 ;; least one word or symbol character following open paren of containing
424 ;; form.
430 ;; Now find the start of the last form.
439 ;; Point is sitting on first character of last (or count) sexp.
441 ;; A distinguished form. If it is the first or second form use double
442 ;; lisp-body-indent, else normal indent. With lisp-body-indent bound
443 ;; to 2 (the default), this just happens to work the same with if as
444 ;; the older code, but it makes unwind-protect, condition-case,
445 ;; with-output-to-temp-buffer, et. al. much more tasteful. The older,
446 ;; less hacked, behavior can be obtained by replacing below with
447 ;; (list normal-indent containing-form-start).
450 containing-form-start)
452 ;; A non-distinguished form. Use body-indent if there are no
453 ;; distinguished forms and this is the first undistinguished form,
454 ;; or if this is the first undistinguished form and the preceding
455 ;; distinguished form has indentation at least as great as body-indent.
458 body-indent
459 normal-indent))))
469 \f
470 ;; (put 'progn 'lisp-indent-function 0), say, causes progn to be indented
471 ;; like defun if the first form is placed on the next line, otherwise
472 ;; it is indented like any other form (i.e. forms line up under first).
492 "Indent each line of the list starting just after point.
493 If optional arg ENDPOS is given, indent each line, stopping when
494 ENDPOS is encountered."
500 last-depth bol outer-loop-done inner-loop-done state this-indent)
501 ;; Get error now if we don't have a complete sexp after point.
508 inner-loop-done nil)
509 ;; Parse this line so we can learn the state
510 ;; to indent the next line.
511 ;; This inner loop goes through only once
512 ;; unless a line ends inside a string.
516 nil nil state))
518 ;; If the line contains a comment other than the sort
519 ;; that is indented like code,
520 ;; indent it now with indent-for-comment.
521 ;; Comments indented like code are right already.
522 ;; In any case clear the in-comment flag in the state
523 ;; because parse-partial-sexp never sees the newlines.
528 ;; If this line ends inside a string,
529 ;; go straight to next line, remaining within the inner loop,
530 ;; and turn off the \-flag.
546 nil
553 ;; Now go to the next line and indent it according
554 ;; to what we learned from parsing the previous one.
558 ;; But not if the line is blank, or just a comment
559 ;; (except for double-semi comments; indent them as usual).
561 nil
567 starting-point))))
580 ;; Indent every line whose first char is between START and END inclusive.
589 \f
591 "Indent all lines of code, starting in the region, sideways by ARG columns.
592 Does not affect lines starting inside comments or strings, assuming that
593 the start of the region is not inside them.
595 Called from a program, takes args START, END, COLUMNS and NOCHANGE-REGEXP.
596 The last is a regexp which, if matched at the beginning of a line,
597 means don't indent that line."
608 nil nil state)))
613 ;; If line does not start in string, indent it
621 nil nil state))))))
625 ;;; lisp-mode.el ends here