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1 ;;; lisp-mode.el --- Lisp mode, and its idiosyncratic commands.
3 ;; Copyright (C) 1985 Free Software Foundation, Inc.
5 ;; This file is part of GNU Emacs.
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.
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.
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.
51 ;; Used to be singlequote; changed for flonums.
94 \f
99 ()
106 "Keymap for Emacs Lisp mode.
110 ()
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.
121 Entry to this mode calls the value of `emacs-lisp-mode-hook'
122 if that value is non-nil."
133 "Keymap for ordinary Lisp mode.
137 ()
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.
149 Note that `run-lisp' may be used either to start an inferior Lisp job
150 or to switch back to an existing one.
152 Entry to this mode calls the value of `lisp-mode-hook'
153 if that value is non-nil."
163 ;; This will do unless shell.el is loaded.
170 "Keymap for Lisp Interaction moe.
174 ()
181 "Major mode for typing and evaluating Lisp forms.
183 before point, and prints its value into the buffer, advancing point.
185 Commands:
186 Delete converts tabs to spaces as it moves back.
187 Paragraphs are separated only by blank lines.
188 Semicolons start comments.
190 Entry to this mode calls the value of `lisp-interaction-mode-hook'
191 if that value is non-nil."
202 "Evaluate sexp before point; print value into current buffer."
208 \f
210 "Evaluate sexp before point; print value in minibuffer.
211 With argument, print output into current buffer."
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."
232 \f
241 comment-column))))
247 "Indent current line as Lisp code.
248 With argument, indent any additional lines of the same expression
249 rigidly along with this one."
257 ;; Don't alter indentation of a ;;; comment line.
260 ;; Single-semicolon comment lines should be indented
261 ;; as comment lines, not as code.
266 nil
269 ;; If initial point was within line's indentation,
270 ;; position after the indentation. Else stay at same point in text.
273 ;; If desired, shift remaining lines of expression the same amount.
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."
296 state paren-depth
297 ;; setting this to a number inhibits calling hook
300 last-sexp containing-sexp)
304 ;; Find outermost containing sexp
307 ;; Find innermost containing sexp
309 state
314 ;; Position following last unclosed open.
316 ;; Is there a complete sexp since then?
318 ;; Yes, but is there a containing sexp after that?
322 nil
323 ;; Innermost containing sexp found
326 ;; indent-point immediately follows open paren.
327 ;; Don't call hook.
329 ;; Find the start of first element of containing sexp.
332 ;; First element of containing sexp is a list.
333 ;; Indent under that list.
334 )
336 last-sexp)
337 ;; This is the first line to start within the containing sexp.
338 ;; It's almost certainly a function call.
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.
349 ;; Indent beneath first sexp on same line as last-sexp.
350 ;; Again, it's almost certainly a function call.
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.
360 ;; Inside a string, don't change indentation.
365 ;; Indent by constant offset
370 lisp-indent-function
373 normal-indent))
375 normal-indent))))))
383 ;; car of form doesn't seem to be a a symbol
386 last-sexp))
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.
398 method)
407 indent-point normal-indent))
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.
427 ;; Now find the start of the last form.
436 ;; Point is sitting on first character of last (or count) sexp.
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).
447 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.
455 body-indent
456 normal-indent))))
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).
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."
497 last-depth bol outer-loop-done inner-loop-done state this-indent)
498 ;; Get error now if we don't have a complete sexp after point.
505 inner-loop-done nil)
506 ;; Parse this line so we can learn the state
507 ;; to indent the next line.
508 ;; This inner loop goes through only once
509 ;; unless a line ends inside a string.
513 nil nil state))
515 ;; If the line contains a comment other than the sort
516 ;; that is indented like code,
517 ;; indent it now with indent-for-comment.
518 ;; Comments indented like code are right already.
519 ;; In any case clear the in-comment flag in the state
520 ;; because parse-partial-sexp never sees the newlines.
525 ;; If this line ends inside a string,
526 ;; go straight to next line, remaining within the inner loop,
527 ;; and turn off the \-flag.
543 nil
550 ;; Now go to the next line and indent it according
551 ;; to what we learned from parsing the previous one.
555 ;; But not if the line is blank, or just a comment
556 ;; (except for double-semi comments; indent them as usual).
558 nil
564 starting-point))))
577 ;; Indent every line whose first char is between START and END inclusive.
586 \f
588 "Indent all lines of code, starting in the region, sideways by ARG columns.
589 Does not affect lines starting inside comments or strings, assuming that
590 the start of the region is not inside them.
592 Called from a program, takes args START, END, COLUMNS and NOCHANGE-REGEXP.
593 The last is a regexp which, if matched at the beginning of a line,
594 means don't indent that line."
605 nil nil state)))
610 ;; If line does not start in string, indent it
618 nil nil state))))))
622 ;;; lisp-mode.el ends here