|
209
|
1 ;;; cl.el --- Common Lisp extensions for GNU Emacs Lisp
|
|
|
2
|
|
|
3 ;; Copyright (C) 1993, 1997 Free Software Foundation, Inc.
|
|
|
4
|
|
|
5 ;; Author: Dave Gillespie <daveg@synaptics.com>
|
|
|
6 ;; Maintainer: XEmacs Development Team
|
|
|
7 ;; Version: 2.02
|
|
|
8 ;; Keywords: extensions, dumped, lisp
|
|
|
9
|
|
|
10 ;; This file is part of XEmacs.
|
|
|
11
|
|
|
12 ;; XEmacs is free software; you can redistribute it and/or modify it
|
|
|
13 ;; under the terms of the GNU General Public License as published by
|
|
|
14 ;; the Free Software Foundation; either version 2, or (at your option)
|
|
|
15 ;; any later version.
|
|
|
16
|
|
|
17 ;; XEmacs is distributed in the hope that it will be useful, but
|
|
|
18 ;; WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
|
19 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
|
20 ;; General Public License for more details.
|
|
|
21
|
|
|
22 ;; You should have received a copy of the GNU General Public License
|
|
|
23 ;; along with XEmacs; see the file COPYING. If not, write to the Free
|
|
|
24 ;; Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
|
|
|
25 ;; 02111-1307, USA.
|
|
|
26
|
|
|
27 ;;; Synched up with: FSF 19.34.
|
|
|
28
|
|
|
29 ;;; Commentary:
|
|
|
30
|
|
|
31 ;; This file is dumped with XEmacs.
|
|
|
32
|
|
|
33 ;; These are extensions to Emacs Lisp that provide a degree of
|
|
|
34 ;; Common Lisp compatibility, beyond what is already built-in
|
|
|
35 ;; in Emacs Lisp.
|
|
|
36 ;;
|
|
|
37 ;; This package was written by Dave Gillespie; it is a complete
|
|
|
38 ;; rewrite of Cesar Quiroz's original cl.el package of December 1986.
|
|
|
39 ;;
|
|
|
40 ;; This package works with Emacs 18, Emacs 19, and XEmacs/Lucid Emacs 19.
|
|
|
41 ;;
|
|
|
42 ;; Bug reports, comments, and suggestions are welcome!
|
|
|
43
|
|
|
44 ;; This file contains the portions of the Common Lisp extensions
|
|
|
45 ;; package which should always be present.
|
|
|
46
|
|
|
47
|
|
|
48 ;;; Future notes:
|
|
|
49
|
|
|
50 ;; Once Emacs 19 becomes standard, many things in this package which are
|
|
|
51 ;; messy for reasons of compatibility can be greatly simplified. For now,
|
|
|
52 ;; I prefer to maintain one unified version.
|
|
|
53
|
|
|
54
|
|
|
55 ;;; Change Log:
|
|
|
56
|
|
|
57 ;; Version 2.02 (30 Jul 93):
|
|
|
58 ;; * Added "cl-compat.el" file, extra compatibility with old package.
|
|
|
59 ;; * Added `lexical-let' and `lexical-let*'.
|
|
|
60 ;; * Added `define-modify-macro', `callf', and `callf2'.
|
|
|
61 ;; * Added `ignore-errors'.
|
|
|
62 ;; * Changed `(setf (nthcdr N PLACE) X)' to work when N is zero.
|
|
|
63 ;; * Merged `*gentemp-counter*' into `*gensym-counter*'.
|
|
|
64 ;; * Extended `subseq' to allow negative START and END like `substring'.
|
|
|
65 ;; * Added `in-ref', `across-ref', `elements of-ref' loop clauses.
|
|
|
66 ;; * Added `concat', `vconcat' loop clauses.
|
|
|
67 ;; * Cleaned up a number of compiler warnings.
|
|
|
68
|
|
|
69 ;; Version 2.01 (7 Jul 93):
|
|
|
70 ;; * Added support for FSF version of Emacs 19.
|
|
|
71 ;; * Added `add-hook' for Emacs 18 users.
|
|
|
72 ;; * Added `defsubst*' and `symbol-macrolet'.
|
|
|
73 ;; * Added `maplist', `mapc', `mapl', `mapcan', `mapcon'.
|
|
|
74 ;; * Added `map', `concatenate', `reduce', `merge'.
|
|
|
75 ;; * Added `revappend', `nreconc', `tailp', `tree-equal'.
|
|
|
76 ;; * Added `assert', `check-type', `typecase', `typep', and `deftype'.
|
|
|
77 ;; * Added destructuring and `&environment' support to `defmacro*'.
|
|
|
78 ;; * Added destructuring to `loop', and added the following clauses:
|
|
|
79 ;; `elements', `frames', `overlays', `intervals', `buffers', `key-seqs'.
|
|
|
80 ;; * Renamed `delete' to `delete*' and `remove' to `remove*'.
|
|
|
81 ;; * Completed support for all keywords in `remove*', `substitute', etc.
|
|
|
82 ;; * Added `most-positive-float' and company.
|
|
|
83 ;; * Fixed hash tables to work with latest Lucid Emacs.
|
|
|
84 ;; * `proclaim' forms are no longer compile-time-evaluating; use `declaim'.
|
|
|
85 ;; * Syntax for `warn' declarations has changed.
|
|
|
86 ;; * Improved implementation of `random*'.
|
|
|
87 ;; * Moved most sequence functions to a new file, cl-seq.el.
|
|
|
88 ;; * Moved `eval-when' into cl-macs.el.
|
|
|
89 ;; * Moved `pushnew' and `adjoin' to cl.el for most common cases.
|
|
|
90 ;; * Moved `provide' forms down to ends of files.
|
|
|
91 ;; * Changed expansion of `pop' to something that compiles to better code.
|
|
|
92 ;; * Changed so that no patch is required for Emacs 19 byte compiler.
|
|
|
93 ;; * Made more things dependent on `optimize' declarations.
|
|
|
94 ;; * Added a partial implementation of struct print functions.
|
|
|
95 ;; * Miscellaneous minor changes.
|
|
|
96
|
|
|
97 ;; Version 2.00:
|
|
|
98 ;; * First public release of this package.
|
|
|
99
|
|
|
100
|
|
|
101 ;;; Code:
|
|
|
102
|
|
|
103 (defvar cl-emacs-type (cond ((or (and (fboundp 'epoch::version)
|
|
|
104 (symbol-value 'epoch::version))
|
|
|
105 (string-lessp emacs-version "19")) 18)
|
|
|
106 ((string-match "XEmacs" emacs-version)
|
|
|
107 'lucid)
|
|
|
108 (t 19)))
|
|
|
109
|
|
|
110 (or (fboundp 'defalias) (fset 'defalias 'fset))
|
|
|
111
|
|
|
112 (defvar cl-optimize-speed 1)
|
|
|
113 (defvar cl-optimize-safety 1)
|
|
|
114
|
|
|
115
|
|
|
116 ;;; Keywords used in this package.
|
|
|
117
|
|
|
118 ;;; XEmacs - keywords are done in Fintern().
|
|
|
119 ;;;
|
|
|
120 ;;; (defconst :test ':test)
|
|
|
121 ;;; (defconst :test-not ':test-not)
|
|
|
122 ;;; (defconst :key ':key)
|
|
|
123 ;;; (defconst :start ':start)
|
|
|
124 ;;; (defconst :start1 ':start1)
|
|
|
125 ;;; (defconst :start2 ':start2)
|
|
|
126 ;;; (defconst :end ':end)
|
|
|
127 ;;; (defconst :end1 ':end1)
|
|
|
128 ;;; (defconst :end2 ':end2)
|
|
|
129 ;;; (defconst :count ':count)
|
|
|
130 ;;; (defconst :initial-value ':initial-value)
|
|
|
131 ;;; (defconst :size ':size)
|
|
|
132 ;;; (defconst :from-end ':from-end)
|
|
|
133 ;;; (defconst :rehash-size ':rehash-size)
|
|
|
134 ;;; (defconst :rehash-threshold ':rehash-threshold)
|
|
|
135 ;;; (defconst :allow-other-keys ':allow-other-keys)
|
|
|
136
|
|
|
137
|
|
|
138 (defvar custom-print-functions nil
|
|
|
139 "This is a list of functions that format user objects for printing.
|
|
|
140 Each function is called in turn with three arguments: the object, the
|
|
|
141 stream, and the print level (currently ignored). If it is able to
|
|
|
142 print the object it returns true; otherwise it returns nil and the
|
|
|
143 printer proceeds to the next function on the list.
|
|
|
144
|
|
|
145 This variable is not used at present, but it is defined in hopes that
|
|
|
146 a future Emacs interpreter will be able to use it.")
|
|
|
147
|
|
|
148
|
|
|
149 ;;; Predicates.
|
|
|
150
|
|
|
151 (defun eql (a b) ; See compiler macro in cl-macs.el
|
|
272
|
152 "Return t if the two args are the same Lisp object.
|
|
209
|
153 Floating-point numbers of equal value are `eql', but they may not be `eq'."
|
|
227
|
154 (if (floatp a)
|
|
209
|
155 (equal a b)
|
|
|
156 (eq a b)))
|
|
|
157
|
|
|
158
|
|
|
159 ;;; Generalized variables. These macros are defined here so that they
|
|
|
160 ;;; can safely be used in .emacs files.
|
|
|
161
|
|
|
162 (defmacro incf (place &optional x)
|
|
|
163 "(incf PLACE [X]): increment PLACE by X (1 by default).
|
|
|
164 PLACE may be a symbol, or any generalized variable allowed by `setf'.
|
|
|
165 The return value is the incremented value of PLACE."
|
|
|
166 (if (symbolp place)
|
|
|
167 (list 'setq place (if x (list '+ place x) (list '1+ place)))
|
|
227
|
168 ;; XEmacs byte-compiler optimizes (+ FOO 1) to (1+ FOO), so this
|
|
|
169 ;; is OK.
|
|
209
|
170 (list 'callf '+ place (or x 1))))
|
|
|
171
|
|
|
172 (defmacro decf (place &optional x)
|
|
|
173 "(decf PLACE [X]): decrement PLACE by X (1 by default).
|
|
|
174 PLACE may be a symbol, or any generalized variable allowed by `setf'.
|
|
|
175 The return value is the decremented value of PLACE."
|
|
|
176 (if (symbolp place)
|
|
|
177 (list 'setq place (if x (list '- place x) (list '1- place)))
|
|
|
178 (list 'callf '- place (or x 1))))
|
|
|
179
|
|
|
180 (defmacro pop (place)
|
|
|
181 "(pop PLACE): remove and return the head of the list stored in PLACE.
|
|
|
182 Analogous to (prog1 (car PLACE) (setf PLACE (cdr PLACE))), though more
|
|
|
183 careful about evaluating each argument only once and in the right order.
|
|
|
184 PLACE may be a symbol, or any generalized variable allowed by `setf'."
|
|
|
185 (if (symbolp place)
|
|
|
186 (list 'car (list 'prog1 place (list 'setq place (list 'cdr place))))
|
|
|
187 (cl-do-pop place)))
|
|
|
188
|
|
|
189 (defmacro push (x place)
|
|
|
190 "(push X PLACE): insert X at the head of the list stored in PLACE.
|
|
|
191 Analogous to (setf PLACE (cons X PLACE)), though more careful about
|
|
|
192 evaluating each argument only once and in the right order. PLACE may
|
|
|
193 be a symbol, or any generalized variable allowed by `setf'."
|
|
|
194 (if (symbolp place) (list 'setq place (list 'cons x place))
|
|
|
195 (list 'callf2 'cons x place)))
|
|
|
196
|
|
|
197 (defmacro pushnew (x place &rest keys)
|
|
|
198 "(pushnew X PLACE): insert X at the head of the list if not already there.
|
|
|
199 Like (push X PLACE), except that the list is unmodified if X is `eql' to
|
|
|
200 an element already on the list.
|
|
|
201 Keywords supported: :test :test-not :key"
|
|
|
202 (if (symbolp place) (list 'setq place (list* 'adjoin x place keys))
|
|
|
203 (list* 'callf2 'adjoin x place keys)))
|
|
|
204
|
|
|
205 (defun cl-set-elt (seq n val)
|
|
|
206 (if (listp seq) (setcar (nthcdr n seq) val) (aset seq n val)))
|
|
|
207
|
|
|
208 (defun cl-set-nthcdr (n list x)
|
|
|
209 (if (<= n 0) x (setcdr (nthcdr (1- n) list) x) list))
|
|
|
210
|
|
|
211 (defun cl-set-buffer-substring (start end val)
|
|
|
212 (save-excursion (delete-region start end)
|
|
|
213 (goto-char start)
|
|
|
214 (insert val)
|
|
|
215 val))
|
|
|
216
|
|
|
217 (defun cl-set-substring (str start end val)
|
|
|
218 (if end (if (< end 0) (incf end (length str)))
|
|
|
219 (setq end (length str)))
|
|
|
220 (if (< start 0) (incf start str))
|
|
|
221 (concat (and (> start 0) (substring str 0 start))
|
|
|
222 val
|
|
|
223 (and (< end (length str)) (substring str end))))
|
|
|
224
|
|
|
225
|
|
|
226 ;;; Control structures.
|
|
|
227
|
|
227
|
228 ;; These macros are so simple and so often-used that it's better to have
|
|
|
229 ;; them all the time than to load them from cl-macs.el.
|
|
|
230
|
|
|
231 ;; NOTE: these macros were moved to subr.el in FSF 20. It is of no
|
|
|
232 ;; consequence to XEmacs, because we preload this file, and they
|
|
|
233 ;; should better remain here.
|
|
209
|
234
|
|
|
235 (defmacro when (cond &rest body)
|
|
|
236 "(when COND BODY...): if COND yields non-nil, do BODY, else return nil."
|
|
|
237 (list 'if cond (cons 'progn body)))
|
|
|
238
|
|
|
239 (defmacro unless (cond &rest body)
|
|
|
240 "(unless COND BODY...): if COND yields nil, do BODY, else return nil."
|
|
|
241 (cons 'if (cons cond (cons nil body))))
|
|
|
242
|
|
|
243 (defun cl-map-extents (&rest cl-args)
|
|
227
|
244 ;; XEmacs: This used to check for overlays first, but that's wrong
|
|
|
245 ;; because of the new compatibility library. *duh*
|
|
|
246 (cond ((fboundp 'map-extents)
|
|
|
247 (apply 'map-extents cl-args))
|
|
|
248 ((fboundp 'next-overlay-at)
|
|
|
249 (apply 'cl-map-overlays cl-args))))
|
|
209
|
250
|
|
|
251
|
|
|
252 ;;; Blocks and exits.
|
|
|
253
|
|
|
254 (defalias 'cl-block-wrapper 'identity)
|
|
|
255 (defalias 'cl-block-throw 'throw)
|
|
|
256
|
|
|
257
|
|
|
258 ;;; Multiple values. True multiple values are not supported, or even
|
|
|
259 ;;; simulated. Instead, multiple-value-bind and friends simply expect
|
|
|
260 ;;; the target form to return the values as a list.
|
|
|
261
|
|
|
262 (defalias 'values 'list)
|
|
|
263 (defalias 'values-list 'identity)
|
|
|
264 (defalias 'multiple-value-list 'identity)
|
|
|
265 (defalias 'multiple-value-call 'apply) ; only works for one arg
|
|
|
266 (defalias 'nth-value 'nth)
|
|
|
267
|
|
|
268
|
|
|
269 ;;; Macros.
|
|
|
270
|
|
|
271 (defvar cl-macro-environment nil)
|
|
|
272 ;; XEmacs: we renamed the internal function to macroexpand-internal
|
|
|
273 ;; to avoid doc-file problems.
|
|
|
274 (defvar cl-old-macroexpand (prog1 (symbol-function 'macroexpand-internal)
|
|
|
275 (defalias 'macroexpand 'cl-macroexpand)))
|
|
|
276
|
|
|
277 (defun cl-macroexpand (cl-macro &optional cl-env)
|
|
|
278 "Return result of expanding macros at top level of FORM.
|
|
|
279 If FORM is not a macro call, it is returned unchanged.
|
|
|
280 Otherwise, the macro is expanded and the expansion is considered
|
|
|
281 in place of FORM. When a non-macro-call results, it is returned.
|
|
|
282
|
|
|
283 The second optional arg ENVIRONMENT species an environment of macro
|
|
|
284 definitions to shadow the loaded ones for use in file byte-compilation."
|
|
|
285 (let ((cl-macro-environment cl-env))
|
|
|
286 (while (progn (setq cl-macro (funcall cl-old-macroexpand cl-macro cl-env))
|
|
|
287 (and (symbolp cl-macro)
|
|
|
288 (cdr (assq (symbol-name cl-macro) cl-env))))
|
|
|
289 (setq cl-macro (cadr (assq (symbol-name cl-macro) cl-env))))
|
|
|
290 cl-macro))
|
|
|
291
|
|
|
292
|
|
|
293 ;;; Declarations.
|
|
|
294
|
|
|
295 (defvar cl-compiling-file nil)
|
|
|
296 (defun cl-compiling-file ()
|
|
|
297 (or cl-compiling-file
|
|
|
298 ;; XEmacs change
|
|
|
299 ; (and (boundp 'outbuffer) (bufferp (symbol-value 'outbuffer))
|
|
|
300 ; (equal (buffer-name (symbol-value 'outbuffer))
|
|
|
301 ; " *Compiler Output*"))
|
|
|
302 (and (boundp 'byte-compile-outbuffer)
|
|
|
303 (bufferp (symbol-value 'byte-compile-outbuffer))
|
|
|
304 (equal (buffer-name (symbol-value 'byte-compile-outbuffer))
|
|
|
305 " *Compiler Output*"))
|
|
|
306 ))
|
|
|
307
|
|
|
308 (defvar cl-proclaims-deferred nil)
|
|
|
309
|
|
|
310 (defun proclaim (spec)
|
|
|
311 (if (fboundp 'cl-do-proclaim) (cl-do-proclaim spec t)
|
|
|
312 (push spec cl-proclaims-deferred))
|
|
|
313 nil)
|
|
|
314
|
|
|
315 (defmacro declaim (&rest specs)
|
|
|
316 (let ((body (mapcar (function (lambda (x) (list 'proclaim (list 'quote x))))
|
|
|
317 specs)))
|
|
|
318 (if (cl-compiling-file) (list* 'eval-when '(compile load eval) body)
|
|
|
319 (cons 'progn body)))) ; avoid loading cl-macs.el for eval-when
|
|
|
320
|
|
|
321
|
|
|
322 ;;; Symbols.
|
|
|
323
|
|
|
324 (defun cl-random-time ()
|
|
|
325 (let* ((time (copy-sequence (current-time-string))) (i (length time)) (v 0))
|
|
|
326 (while (>= (decf i) 0) (setq v (+ (* v 3) (aref time i))))
|
|
|
327 v))
|
|
|
328
|
|
|
329 (defvar *gensym-counter* (* (logand (cl-random-time) 1023) 100))
|
|
|
330
|
|
|
331
|
|
|
332 ;;; Numbers.
|
|
|
333
|
|
|
334 (defun floatp-safe (x)
|
|
272
|
335 "Return t if OBJECT is a floating point number.
|
|
209
|
336 On Emacs versions that lack floating-point support, this function
|
|
|
337 always returns nil."
|
|
227
|
338 ;;(and (numberp x) (not (integerp x)))
|
|
|
339 ;; XEmacs: use floatp. XEmacs is always compiled with
|
|
|
340 ;; floating-point, anyway.
|
|
|
341 (floatp x))
|
|
209
|
342
|
|
|
343 (defun plusp (x)
|
|
272
|
344 "Return t if NUMBER is positive."
|
|
209
|
345 (> x 0))
|
|
|
346
|
|
|
347 (defun minusp (x)
|
|
272
|
348 "Return t if NUMBER is negative."
|
|
209
|
349 (< x 0))
|
|
|
350
|
|
|
351 (defun oddp (x)
|
|
272
|
352 "Return t if INTEGER is odd."
|
|
209
|
353 (eq (logand x 1) 1))
|
|
|
354
|
|
|
355 (defun evenp (x)
|
|
272
|
356 "Return t if INTEGER is even."
|
|
209
|
357 (eq (logand x 1) 0))
|
|
|
358
|
|
|
359 (defun cl-abs (x)
|
|
|
360 "Return the absolute value of ARG."
|
|
|
361 (if (>= x 0) x (- x)))
|
|
|
362 (or (fboundp 'abs) (defalias 'abs 'cl-abs)) ; This is built-in to Emacs 19
|
|
|
363
|
|
|
364 (defvar *random-state* (vector 'cl-random-state-tag -1 30 (cl-random-time)))
|
|
|
365
|
|
|
366 ;;; We use `eval' in case VALBITS differs from compile-time to load-time.
|
|
284
|
367 (defconst most-positive-fixnum (eval '(lsh -1 -1))
|
|
|
368 "The integer closest in value to positive infinity.")
|
|
|
369 (defconst most-negative-fixnum (eval '(- -1 (lsh -1 -1)))
|
|
|
370 "The integer closest in value to negative infinity.")
|
|
209
|
371
|
|
284
|
372 ;;; The following are set by code in cl-extra.el
|
|
|
373 (defconst most-positive-float nil
|
|
|
374 "The float closest in value to positive infinity.")
|
|
|
375 (defconst most-negative-float nil
|
|
|
376 "The float closest in value to negative infinity.")
|
|
|
377 (defconst least-positive-float nil
|
|
|
378 "The positive float closest in value to 0.")
|
|
|
379 (defconst least-negative-float nil
|
|
|
380 "The negative float closest in value to 0.")
|
|
209
|
381 (defconst least-positive-normalized-float nil)
|
|
|
382 (defconst least-negative-normalized-float nil)
|
|
|
383 (defconst float-epsilon nil)
|
|
|
384 (defconst float-negative-epsilon nil)
|
|
|
385
|
|
|
386
|
|
|
387 ;;; Sequence functions.
|
|
|
388
|
|
|
389 (defalias 'copy-seq 'copy-sequence)
|
|
|
390
|
|
|
391 (defun mapcar* (cl-func cl-x &rest cl-rest)
|
|
|
392 "Apply FUNCTION to each element of SEQ, and make a list of the results.
|
|
|
393 If there are several SEQs, FUNCTION is called with that many arguments,
|
|
|
394 and mapping stops as soon as the shortest list runs out. With just one
|
|
|
395 SEQ, this is like `mapcar'. With several, it is like the Common Lisp
|
|
|
396 `mapcar' function extended to arbitrary sequence types."
|
|
|
397 (if cl-rest
|
|
|
398 (if (or (cdr cl-rest) (nlistp cl-x) (nlistp (car cl-rest)))
|
|
|
399 (cl-mapcar-many cl-func (cons cl-x cl-rest))
|
|
|
400 (let ((cl-res nil) (cl-y (car cl-rest)))
|
|
|
401 (while (and cl-x cl-y)
|
|
|
402 (push (funcall cl-func (pop cl-x) (pop cl-y)) cl-res))
|
|
|
403 (nreverse cl-res)))
|
|
|
404 (mapcar cl-func cl-x)))
|
|
|
405
|
|
|
406
|
|
|
407 ;;; List functions.
|
|
|
408
|
|
|
409 (defalias 'first 'car)
|
|
|
410 (defalias 'rest 'cdr)
|
|
|
411 (defalias 'endp 'null)
|
|
|
412
|
|
|
413 (defun second (x)
|
|
|
414 "Return the second element of the list LIST."
|
|
|
415 (car (cdr x)))
|
|
|
416
|
|
|
417 (defun third (x)
|
|
|
418 "Return the third element of the list LIST."
|
|
|
419 (car (cdr (cdr x))))
|
|
|
420
|
|
|
421 (defun fourth (x)
|
|
|
422 "Return the fourth element of the list LIST."
|
|
|
423 (nth 3 x))
|
|
|
424
|
|
|
425 (defun fifth (x)
|
|
|
426 "Return the fifth element of the list LIST."
|
|
|
427 (nth 4 x))
|
|
|
428
|
|
|
429 (defun sixth (x)
|
|
|
430 "Return the sixth element of the list LIST."
|
|
|
431 (nth 5 x))
|
|
|
432
|
|
|
433 (defun seventh (x)
|
|
|
434 "Return the seventh element of the list LIST."
|
|
|
435 (nth 6 x))
|
|
|
436
|
|
|
437 (defun eighth (x)
|
|
|
438 "Return the eighth element of the list LIST."
|
|
|
439 (nth 7 x))
|
|
|
440
|
|
|
441 (defun ninth (x)
|
|
|
442 "Return the ninth element of the list LIST."
|
|
|
443 (nth 8 x))
|
|
|
444
|
|
|
445 (defun tenth (x)
|
|
|
446 "Return the tenth element of the list LIST."
|
|
|
447 (nth 9 x))
|
|
|
448
|
|
|
449 (defun caar (x)
|
|
|
450 "Return the `car' of the `car' of X."
|
|
|
451 (car (car x)))
|
|
|
452
|
|
|
453 (defun cadr (x)
|
|
|
454 "Return the `car' of the `cdr' of X."
|
|
|
455 (car (cdr x)))
|
|
|
456
|
|
|
457 (defun cdar (x)
|
|
|
458 "Return the `cdr' of the `car' of X."
|
|
|
459 (cdr (car x)))
|
|
|
460
|
|
|
461 (defun cddr (x)
|
|
|
462 "Return the `cdr' of the `cdr' of X."
|
|
|
463 (cdr (cdr x)))
|
|
|
464
|
|
|
465 (defun caaar (x)
|
|
|
466 "Return the `car' of the `car' of the `car' of X."
|
|
|
467 (car (car (car x))))
|
|
|
468
|
|
|
469 (defun caadr (x)
|
|
|
470 "Return the `car' of the `car' of the `cdr' of X."
|
|
|
471 (car (car (cdr x))))
|
|
|
472
|
|
|
473 (defun cadar (x)
|
|
|
474 "Return the `car' of the `cdr' of the `car' of X."
|
|
|
475 (car (cdr (car x))))
|
|
|
476
|
|
|
477 (defun caddr (x)
|
|
|
478 "Return the `car' of the `cdr' of the `cdr' of X."
|
|
|
479 (car (cdr (cdr x))))
|
|
|
480
|
|
|
481 (defun cdaar (x)
|
|
|
482 "Return the `cdr' of the `car' of the `car' of X."
|
|
|
483 (cdr (car (car x))))
|
|
|
484
|
|
|
485 (defun cdadr (x)
|
|
|
486 "Return the `cdr' of the `car' of the `cdr' of X."
|
|
|
487 (cdr (car (cdr x))))
|
|
|
488
|
|
|
489 (defun cddar (x)
|
|
|
490 "Return the `cdr' of the `cdr' of the `car' of X."
|
|
|
491 (cdr (cdr (car x))))
|
|
|
492
|
|
|
493 (defun cdddr (x)
|
|
|
494 "Return the `cdr' of the `cdr' of the `cdr' of X."
|
|
|
495 (cdr (cdr (cdr x))))
|
|
|
496
|
|
|
497 (defun caaaar (x)
|
|
|
498 "Return the `car' of the `car' of the `car' of the `car' of X."
|
|
|
499 (car (car (car (car x)))))
|
|
|
500
|
|
|
501 (defun caaadr (x)
|
|
|
502 "Return the `car' of the `car' of the `car' of the `cdr' of X."
|
|
|
503 (car (car (car (cdr x)))))
|
|
|
504
|
|
|
505 (defun caadar (x)
|
|
|
506 "Return the `car' of the `car' of the `cdr' of the `car' of X."
|
|
|
507 (car (car (cdr (car x)))))
|
|
|
508
|
|
|
509 (defun caaddr (x)
|
|
|
510 "Return the `car' of the `car' of the `cdr' of the `cdr' of X."
|
|
|
511 (car (car (cdr (cdr x)))))
|
|
|
512
|
|
|
513 (defun cadaar (x)
|
|
|
514 "Return the `car' of the `cdr' of the `car' of the `car' of X."
|
|
|
515 (car (cdr (car (car x)))))
|
|
|
516
|
|
|
517 (defun cadadr (x)
|
|
|
518 "Return the `car' of the `cdr' of the `car' of the `cdr' of X."
|
|
|
519 (car (cdr (car (cdr x)))))
|
|
|
520
|
|
|
521 (defun caddar (x)
|
|
|
522 "Return the `car' of the `cdr' of the `cdr' of the `car' of X."
|
|
|
523 (car (cdr (cdr (car x)))))
|
|
|
524
|
|
|
525 (defun cadddr (x)
|
|
|
526 "Return the `car' of the `cdr' of the `cdr' of the `cdr' of X."
|
|
|
527 (car (cdr (cdr (cdr x)))))
|
|
|
528
|
|
|
529 (defun cdaaar (x)
|
|
|
530 "Return the `cdr' of the `car' of the `car' of the `car' of X."
|
|
|
531 (cdr (car (car (car x)))))
|
|
|
532
|
|
|
533 (defun cdaadr (x)
|
|
|
534 "Return the `cdr' of the `car' of the `car' of the `cdr' of X."
|
|
|
535 (cdr (car (car (cdr x)))))
|
|
|
536
|
|
|
537 (defun cdadar (x)
|
|
|
538 "Return the `cdr' of the `car' of the `cdr' of the `car' of X."
|
|
|
539 (cdr (car (cdr (car x)))))
|
|
|
540
|
|
|
541 (defun cdaddr (x)
|
|
|
542 "Return the `cdr' of the `car' of the `cdr' of the `cdr' of X."
|
|
|
543 (cdr (car (cdr (cdr x)))))
|
|
|
544
|
|
|
545 (defun cddaar (x)
|
|
|
546 "Return the `cdr' of the `cdr' of the `car' of the `car' of X."
|
|
|
547 (cdr (cdr (car (car x)))))
|
|
|
548
|
|
|
549 (defun cddadr (x)
|
|
|
550 "Return the `cdr' of the `cdr' of the `car' of the `cdr' of X."
|
|
|
551 (cdr (cdr (car (cdr x)))))
|
|
|
552
|
|
|
553 (defun cdddar (x)
|
|
|
554 "Return the `cdr' of the `cdr' of the `cdr' of the `car' of X."
|
|
|
555 (cdr (cdr (cdr (car x)))))
|
|
|
556
|
|
|
557 (defun cddddr (x)
|
|
|
558 "Return the `cdr' of the `cdr' of the `cdr' of the `cdr' of X."
|
|
|
559 (cdr (cdr (cdr (cdr x)))))
|
|
|
560
|
|
|
561 (defun last (x &optional n)
|
|
272
|
562 "Return the last link in the list LIST.
|
|
|
563 With optional argument N, return Nth-to-last link (default 1)."
|
|
209
|
564 (if n
|
|
|
565 (let ((m 0) (p x))
|
|
|
566 (while (consp p) (incf m) (pop p))
|
|
|
567 (if (<= n 0) p
|
|
|
568 (if (< n m) (nthcdr (- m n) x) x)))
|
|
|
569 (while (consp (cdr x)) (pop x))
|
|
|
570 x))
|
|
|
571
|
|
|
572 (defun butlast (x &optional n)
|
|
272
|
573 "Return a copy of LIST with the last N elements removed."
|
|
209
|
574 (if (and n (<= n 0)) x
|
|
|
575 (nbutlast (copy-sequence x) n)))
|
|
|
576
|
|
|
577 (defun nbutlast (x &optional n)
|
|
272
|
578 "Modify LIST to remove the last N elements."
|
|
209
|
579 (let ((m (length x)))
|
|
|
580 (or n (setq n 1))
|
|
|
581 (and (< n m)
|
|
|
582 (progn
|
|
|
583 (if (> n 0) (setcdr (nthcdr (- (1- m) n) x) nil))
|
|
|
584 x))))
|
|
|
585
|
|
|
586 (defun list* (arg &rest rest) ; See compiler macro in cl-macs.el
|
|
|
587 "Return a new list with specified args as elements, cons'd to last arg.
|
|
|
588 Thus, `(list* A B C D)' is equivalent to `(nconc (list A B C) D)', or to
|
|
|
589 `(cons A (cons B (cons C D)))'."
|
|
|
590 (cond ((not rest) arg)
|
|
|
591 ((not (cdr rest)) (cons arg (car rest)))
|
|
|
592 (t (let* ((n (length rest))
|
|
|
593 (copy (copy-sequence rest))
|
|
|
594 (last (nthcdr (- n 2) copy)))
|
|
|
595 (setcdr last (car (cdr last)))
|
|
|
596 (cons arg copy)))))
|
|
|
597
|
|
|
598 (defun ldiff (list sublist)
|
|
|
599 "Return a copy of LIST with the tail SUBLIST removed."
|
|
|
600 (let ((res nil))
|
|
|
601 (while (and (consp list) (not (eq list sublist)))
|
|
|
602 (push (pop list) res))
|
|
|
603 (nreverse res)))
|
|
|
604
|
|
|
605 (defun copy-list (list)
|
|
|
606 "Return a copy of a list, which may be a dotted list.
|
|
|
607 The elements of the list are not copied, just the list structure itself."
|
|
|
608 (if (consp list)
|
|
|
609 (let ((res nil))
|
|
|
610 (while (consp list) (push (pop list) res))
|
|
|
611 (prog1 (nreverse res) (setcdr res list)))
|
|
|
612 (car list)))
|
|
|
613
|
|
|
614 (defun cl-maclisp-member (item list)
|
|
|
615 (while (and list (not (equal item (car list)))) (setq list (cdr list)))
|
|
|
616 list)
|
|
|
617
|
|
|
618 ;;; Define an Emacs 19-compatible `member' for the benefit of Emacs 18 users.
|
|
|
619 (or (and (fboundp 'member) (subrp (symbol-function 'member)))
|
|
|
620 (defalias 'member 'cl-maclisp-member))
|
|
|
621
|
|
|
622 (defalias 'cl-member 'memq) ; for compatibility with old CL package
|
|
|
623 (defalias 'cl-floor 'floor*)
|
|
|
624 (defalias 'cl-ceiling 'ceiling*)
|
|
|
625 (defalias 'cl-truncate 'truncate*)
|
|
|
626 (defalias 'cl-round 'round*)
|
|
|
627 (defalias 'cl-mod 'mod*)
|
|
|
628
|
|
|
629 (defun adjoin (cl-item cl-list &rest cl-keys) ; See compiler macro in cl-macs
|
|
|
630 "Return ITEM consed onto the front of LIST only if it's not already there.
|
|
|
631 Otherwise, return LIST unmodified.
|
|
|
632 Keywords supported: :test :test-not :key"
|
|
|
633 (cond ((or (equal cl-keys '(:test eq))
|
|
|
634 (and (null cl-keys) (not (numberp cl-item))))
|
|
|
635 (if (memq cl-item cl-list) cl-list (cons cl-item cl-list)))
|
|
|
636 ((or (equal cl-keys '(:test equal)) (null cl-keys))
|
|
|
637 (if (member cl-item cl-list) cl-list (cons cl-item cl-list)))
|
|
|
638 (t (apply 'cl-adjoin cl-item cl-list cl-keys))))
|
|
|
639
|
|
|
640 (defun subst (cl-new cl-old cl-tree &rest cl-keys)
|
|
|
641 "Substitute NEW for OLD everywhere in TREE (non-destructively).
|
|
|
642 Return a copy of TREE with all elements `eql' to OLD replaced by NEW.
|
|
|
643 Keywords supported: :test :test-not :key"
|
|
|
644 (if (or cl-keys (and (numberp cl-old) (not (integerp cl-old))))
|
|
|
645 (apply 'sublis (list (cons cl-old cl-new)) cl-tree cl-keys)
|
|
|
646 (cl-do-subst cl-new cl-old cl-tree)))
|
|
|
647
|
|
|
648 (defun cl-do-subst (cl-new cl-old cl-tree)
|
|
|
649 (cond ((eq cl-tree cl-old) cl-new)
|
|
|
650 ((consp cl-tree)
|
|
|
651 (let ((a (cl-do-subst cl-new cl-old (car cl-tree)))
|
|
|
652 (d (cl-do-subst cl-new cl-old (cdr cl-tree))))
|
|
|
653 (if (and (eq a (car cl-tree)) (eq d (cdr cl-tree)))
|
|
|
654 cl-tree (cons a d))))
|
|
|
655 (t cl-tree)))
|
|
|
656
|
|
272
|
657 (defun acons (a b c)
|
|
|
658 "Return a new alist created by adding (KEY . VALUE) to ALIST."
|
|
|
659 (cons (cons a b) c))
|
|
|
660
|
|
209
|
661 (defun pairlis (a b &optional c) (nconc (mapcar* 'cons a b) c))
|
|
|
662
|
|
|
663
|
|
|
664 ;;; Miscellaneous.
|
|
|
665
|
|
|
666 ;; XEmacs change
|
|
|
667 (define-error 'cl-assertion-failed "Assertion failed")
|
|
|
668
|
|
|
669 ;;; This is defined in Emacs 19; define it here for Emacs 18 users.
|
|
|
670 (defun cl-add-hook (hook func &optional append)
|
|
|
671 "Add to hook variable HOOK the function FUNC.
|
|
|
672 FUNC is not added if it already appears on the list stored in HOOK."
|
|
|
673 (let ((old (and (boundp hook) (symbol-value hook))))
|
|
|
674 (and (listp old) (not (eq (car old) 'lambda))
|
|
|
675 (setq old (list old)))
|
|
|
676 (and (not (member func old))
|
|
|
677 (set hook (if append (nconc old (list func)) (cons func old))))))
|
|
|
678 (or (fboundp 'add-hook) (defalias 'add-hook 'cl-add-hook))
|
|
|
679
|
|
|
680 ;; XEmacs change
|
|
|
681 ;(load "cl-defs")
|
|
|
682
|
|
|
683 ;;; Define data for indentation and edebug.
|
|
|
684 (mapcar (function
|
|
|
685 (lambda (entry)
|
|
|
686 (mapcar (function
|
|
|
687 (lambda (func)
|
|
|
688 (put func 'lisp-indent-function (nth 1 entry))
|
|
|
689 (put func 'lisp-indent-hook (nth 1 entry))
|
|
|
690 (or (get func 'edebug-form-spec)
|
|
|
691 (put func 'edebug-form-spec (nth 2 entry)))))
|
|
|
692 (car entry))))
|
|
|
693 '(((defun* defmacro*) defun)
|
|
|
694 ((function*) nil
|
|
|
695 (&or symbolp ([&optional 'macro] 'lambda (&rest sexp) &rest form)))
|
|
|
696 ((eval-when) 1 (sexp &rest form))
|
|
|
697 ((when unless) 1 (&rest form))
|
|
|
698 ((declare) nil (&rest sexp))
|
|
|
699 ((the) 1 (sexp &rest form))
|
|
|
700 ((case ecase typecase etypecase) 1 (form &rest (sexp &rest form)))
|
|
|
701 ((block return-from) 1 (sexp &rest form))
|
|
|
702 ((return) nil (&optional form))
|
|
|
703 ((do do*) 2 ((&rest &or symbolp (symbolp &optional form form))
|
|
|
704 (form &rest form)
|
|
|
705 &rest form))
|
|
|
706 ((dolist dotimes) 1 ((symbolp form &rest form) &rest form))
|
|
|
707 ((do-symbols) 1 ((symbolp form &optional form form) &rest form))
|
|
|
708 ((do-all-symbols) 1 ((symbolp form &optional form) &rest form))
|
|
|
709 ((psetq setf psetf) nil edebug-setq-form)
|
|
|
710 ((progv) 2 (&rest form))
|
|
|
711 ((flet labels macrolet) 1
|
|
|
712 ((&rest (sexp sexp &rest form)) &rest form))
|
|
|
713 ((symbol-macrolet lexical-let lexical-let*) 1
|
|
|
714 ((&rest &or symbolp (symbolp form)) &rest form))
|
|
|
715 ((multiple-value-bind) 2 ((&rest symbolp) &rest form))
|
|
|
716 ((multiple-value-setq) 1 ((&rest symbolp) &rest form))
|
|
|
717 ((incf decf remf pop push pushnew shiftf rotatef) nil (&rest form))
|
|
|
718 ((letf letf*) 1 ((&rest (&rest form)) &rest form))
|
|
|
719 ((callf destructuring-bind) 2 (sexp form &rest form))
|
|
|
720 ((callf2) 3 (sexp form form &rest form))
|
|
|
721 ((loop) defun (&rest &or symbolp form))
|
|
|
722 ((ignore-errors) 0 (&rest form))))
|
|
|
723
|
|
|
724
|
|
|
725 ;;; This goes here so that cl-macs can find it if it loads right now.
|
|
|
726 (provide 'cl-19) ; usage: (require 'cl-19 "cl")
|
|
|
727
|
|
|
728
|
|
|
729 ;;; Things to do after byte-compiler is loaded.
|
|
|
730 ;;; As a side effect, we cause cl-macs to be loaded when compiling, so
|
|
|
731 ;;; that the compiler-macros defined there will be present.
|
|
|
732
|
|
|
733 (defvar cl-hacked-flag nil)
|
|
|
734 (defun cl-hack-byte-compiler ()
|
|
|
735 (if (and (not cl-hacked-flag) (fboundp 'byte-compile-file-form))
|
|
|
736 (progn
|
|
|
737 (cl-compile-time-init) ; in cl-macs.el
|
|
|
738 (setq cl-hacked-flag t))))
|
|
|
739
|
|
|
740 ;;; Try it now in case the compiler has already been loaded.
|
|
|
741 (cl-hack-byte-compiler)
|
|
|
742
|
|
|
743 ;;; Also make a hook in case compiler is loaded after this file.
|
|
|
744 ;;; The compiler doesn't call any hooks when it loads or runs, but
|
|
|
745 ;;; we can take advantage of the fact that emacs-lisp-mode will be
|
|
|
746 ;;; called when the compiler reads in the file to be compiled.
|
|
|
747 ;;; BUG: If the first compilation is `byte-compile' rather than
|
|
|
748 ;;; `byte-compile-file', we lose. Oh, well.
|
|
|
749 (add-hook 'emacs-lisp-mode-hook 'cl-hack-byte-compiler)
|
|
|
750
|
|
|
751
|
|
|
752 ;;; The following ensures that packages which expect the old-style cl.el
|
|
|
753 ;;; will be happy with this one.
|
|
|
754
|
|
|
755 (provide 'cl)
|
|
|
756
|
|
|
757 (provide 'mini-cl) ; for Epoch
|
|
|
758
|
|
|
759 (run-hooks 'cl-load-hook)
|
|
|
760
|
|
|
761 ;;; cl.el ends here
|
