Mercurial > hg > xemacs-beta
annotate lisp/cl.el @ 5111:34b22f7e1815
merge
| author | Ben Wing <ben@xemacs.org> |
|---|---|
| date | Sat, 06 Mar 2010 21:14:08 -0600 |
| parents | 545ec923b4eb |
| children | 2d0937dc83cf |
| rev | line source |
|---|---|
| 613 | 1 ;;; cl.el --- Common Lisp extensions for XEmacs Lisp |
| 428 | 2 |
| 3 ;; Copyright (C) 1993, 1997 Free Software Foundation, Inc. | |
|
5066
545ec923b4eb
add documentation on keywords to cl*.el
Ben Wing <ben@xemacs.org>
parents:
4995
diff
changeset
|
4 ;; Copyright (C) 2010 Ben Wing. |
| 428 | 5 |
| 6 ;; Author: Dave Gillespie <daveg@synaptics.com> | |
| 7 ;; Maintainer: XEmacs Development Team | |
| 8 ;; Version: 2.02 | |
| 9 ;; Keywords: extensions, dumped, lisp | |
| 10 | |
| 11 ;; This file is part of XEmacs. | |
| 12 | |
| 13 ;; XEmacs is free software; you can redistribute it and/or modify it | |
| 14 ;; under the terms of the GNU General Public License as published by | |
| 15 ;; the Free Software Foundation; either version 2, or (at your option) | |
| 16 ;; any later version. | |
| 17 | |
| 18 ;; XEmacs is distributed in the hope that it will be useful, but | |
| 19 ;; WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 20 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 21 ;; General Public License for more details. | |
| 22 | |
| 23 ;; You should have received a copy of the GNU General Public License | |
| 24 ;; along with XEmacs; see the file COPYING. If not, write to the Free | |
| 25 ;; Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA | |
| 26 ;; 02111-1307, USA. | |
| 27 | |
| 2153 | 28 ;;; Synched up with: FSF 21.3. |
| 428 | 29 |
| 30 ;;; Commentary: | |
| 31 | |
| 32 ;; This file is dumped with XEmacs. | |
| 33 | |
| 34 ;; These are extensions to Emacs Lisp that provide a degree of | |
| 35 ;; Common Lisp compatibility, beyond what is already built-in | |
| 36 ;; in Emacs Lisp. | |
| 37 ;; | |
| 38 ;; This package was written by Dave Gillespie; it is a complete | |
| 39 ;; rewrite of Cesar Quiroz's original cl.el package of December 1986. | |
| 40 ;; | |
| 41 ;; Bug reports, comments, and suggestions are welcome! | |
| 42 | |
| 43 ;; This file contains the portions of the Common Lisp extensions | |
| 44 ;; package which should always be present. | |
| 45 | |
| 46 | |
| 47 ;;; Future notes: | |
| 48 | |
| 49 ;; Once Emacs 19 becomes standard, many things in this package which are | |
| 50 ;; messy for reasons of compatibility can be greatly simplified. For now, | |
| 51 ;; I prefer to maintain one unified version. | |
| 52 | |
| 53 | |
| 54 ;;; Change Log: | |
| 55 | |
| 56 ;; Version 2.02 (30 Jul 93): | |
| 57 ;; * Added "cl-compat.el" file, extra compatibility with old package. | |
| 58 ;; * Added `lexical-let' and `lexical-let*'. | |
| 59 ;; * Added `define-modify-macro', `callf', and `callf2'. | |
| 60 ;; * Added `ignore-errors'. | |
| 61 ;; * Changed `(setf (nthcdr N PLACE) X)' to work when N is zero. | |
| 62 ;; * Merged `*gentemp-counter*' into `*gensym-counter*'. | |
| 63 ;; * Extended `subseq' to allow negative START and END like `substring'. | |
| 64 ;; * Added `in-ref', `across-ref', `elements of-ref' loop clauses. | |
| 65 ;; * Added `concat', `vconcat' loop clauses. | |
| 66 ;; * Cleaned up a number of compiler warnings. | |
| 67 | |
| 68 ;; Version 2.01 (7 Jul 93): | |
| 69 ;; * Added support for FSF version of Emacs 19. | |
| 70 ;; * Added `add-hook' for Emacs 18 users. | |
| 71 ;; * Added `defsubst*' and `symbol-macrolet'. | |
| 72 ;; * Added `maplist', `mapc', `mapl', `mapcan', `mapcon'. | |
| 73 ;; * Added `map', `concatenate', `reduce', `merge'. | |
| 74 ;; * Added `revappend', `nreconc', `tailp', `tree-equal'. | |
| 75 ;; * Added `assert', `check-type', `typecase', `typep', and `deftype'. | |
| 76 ;; * Added destructuring and `&environment' support to `defmacro*'. | |
| 77 ;; * Added destructuring to `loop', and added the following clauses: | |
| 78 ;; `elements', `frames', `overlays', `intervals', `buffers', `key-seqs'. | |
| 79 ;; * Renamed `delete' to `delete*' and `remove' to `remove*'. | |
| 80 ;; * Completed support for all keywords in `remove*', `substitute', etc. | |
| 81 ;; * Added `most-positive-float' and company. | |
| 82 ;; * Fixed hash tables to work with latest Lucid Emacs. | |
| 83 ;; * `proclaim' forms are no longer compile-time-evaluating; use `declaim'. | |
| 84 ;; * Syntax for `warn' declarations has changed. | |
| 85 ;; * Improved implementation of `random*'. | |
| 86 ;; * Moved most sequence functions to a new file, cl-seq.el. | |
| 87 ;; * Moved `eval-when' into cl-macs.el. | |
| 88 ;; * Moved `pushnew' and `adjoin' to cl.el for most common cases. | |
| 89 ;; * Moved `provide' forms down to ends of files. | |
| 90 ;; * Changed expansion of `pop' to something that compiles to better code. | |
| 91 ;; * Changed so that no patch is required for Emacs 19 byte compiler. | |
| 92 ;; * Made more things dependent on `optimize' declarations. | |
| 93 ;; * Added a partial implementation of struct print functions. | |
| 94 ;; * Miscellaneous minor changes. | |
| 95 | |
| 96 ;; Version 2.00: | |
| 97 ;; * First public release of this package. | |
| 98 | |
| 99 | |
| 100 ;;; Code: | |
| 101 | |
| 102 (defvar cl-emacs-type (cond ((or (and (fboundp 'epoch::version) | |
| 103 (symbol-value 'epoch::version)) | |
| 104 (string-lessp emacs-version "19")) 18) | |
| 105 ((string-match "XEmacs" emacs-version) | |
| 106 'lucid) | |
| 107 (t 19))) | |
| 108 | |
| 109 (defvar cl-optimize-speed 1) | |
| 110 (defvar cl-optimize-safety 1) | |
| 111 | |
| 112 | |
| 113 (defvar custom-print-functions nil | |
| 114 "This is a list of functions that format user objects for printing. | |
| 115 Each function is called in turn with three arguments: the object, the | |
| 116 stream, and the print level (currently ignored). If it is able to | |
| 117 print the object it returns true; otherwise it returns nil and the | |
| 118 printer proceeds to the next function on the list. | |
| 119 | |
| 120 This variable is not used at present, but it is defined in hopes that | |
| 121 a future Emacs interpreter will be able to use it.") | |
| 122 | |
| 123 | |
| 124 ;;; Predicates. | |
| 125 | |
| 126 (defun eql (a b) ; See compiler macro in cl-macs.el | |
|
4885
6772ce4d982b
Fix hash tables, #'member*, #'assoc*, #'eql compiler macros if bignums
Aidan Kehoe <kehoea@parhasard.net>
parents:
4783
diff
changeset
|
127 "Return t if the arguments are the same Lisp object, or numerically equal. |
|
6772ce4d982b
Fix hash tables, #'member*, #'assoc*, #'eql compiler macros if bignums
Aidan Kehoe <kehoea@parhasard.net>
parents:
4783
diff
changeset
|
128 |
|
6772ce4d982b
Fix hash tables, #'member*, #'assoc*, #'eql compiler macros if bignums
Aidan Kehoe <kehoea@parhasard.net>
parents:
4783
diff
changeset
|
129 They must be of the same type; the difference between `eq' and `eql' is most |
|
6772ce4d982b
Fix hash tables, #'member*, #'assoc*, #'eql compiler macros if bignums
Aidan Kehoe <kehoea@parhasard.net>
parents:
4783
diff
changeset
|
130 relevant when it comes to the non-fixnum number types. In this |
|
6772ce4d982b
Fix hash tables, #'member*, #'assoc*, #'eql compiler macros if bignums
Aidan Kehoe <kehoea@parhasard.net>
parents:
4783
diff
changeset
|
131 implementation, fixnums of the same numeric value are always `eq', but this |
|
6772ce4d982b
Fix hash tables, #'member*, #'assoc*, #'eql compiler macros if bignums
Aidan Kehoe <kehoea@parhasard.net>
parents:
4783
diff
changeset
|
132 is not true for other numeric types, among them floats, bignums and ratios, |
|
6772ce4d982b
Fix hash tables, #'member*, #'assoc*, #'eql compiler macros if bignums
Aidan Kehoe <kehoea@parhasard.net>
parents:
4783
diff
changeset
|
133 if available. |
|
6772ce4d982b
Fix hash tables, #'member*, #'assoc*, #'eql compiler macros if bignums
Aidan Kehoe <kehoea@parhasard.net>
parents:
4783
diff
changeset
|
134 |
|
6772ce4d982b
Fix hash tables, #'member*, #'assoc*, #'eql compiler macros if bignums
Aidan Kehoe <kehoea@parhasard.net>
parents:
4783
diff
changeset
|
135 See also `=' (which doesn't require that its arguments be of the same type, |
|
6772ce4d982b
Fix hash tables, #'member*, #'assoc*, #'eql compiler macros if bignums
Aidan Kehoe <kehoea@parhasard.net>
parents:
4783
diff
changeset
|
136 but only accepts numeric arguments, characters and markers) and `equal'." |
|
6772ce4d982b
Fix hash tables, #'member*, #'assoc*, #'eql compiler macros if bignums
Aidan Kehoe <kehoea@parhasard.net>
parents:
4783
diff
changeset
|
137 (or (eq a b) (and (numberp a) (equal a b)))) |
| 428 | 138 |
| 139 ;;; Generalized variables. These macros are defined here so that they | |
| 140 ;;; can safely be used in .emacs files. | |
| 141 | |
| 142 (defmacro incf (place &optional x) | |
| 3343 | 143 "Increment PLACE by X (1 by default). |
| 428 | 144 PLACE may be a symbol, or any generalized variable allowed by `setf'. |
| 145 The return value is the incremented value of PLACE." | |
| 146 (if (symbolp place) | |
| 147 (list 'setq place (if x (list '+ place x) (list '1+ place))) | |
| 148 ;; XEmacs byte-compiler optimizes (+ FOO 1) to (1+ FOO), so this | |
| 149 ;; is OK. | |
| 150 (list 'callf '+ place (or x 1)))) | |
| 151 | |
| 152 (defmacro decf (place &optional x) | |
| 3343 | 153 "Decrement PLACE by X (1 by default). |
| 428 | 154 PLACE may be a symbol, or any generalized variable allowed by `setf'. |
| 155 The return value is the decremented value of PLACE." | |
| 156 (if (symbolp place) | |
| 157 (list 'setq place (if x (list '- place x) (list '1- place))) | |
| 158 (list 'callf '- place (or x 1)))) | |
| 159 | |
| 160 (defmacro pop (place) | |
| 3343 | 161 "Remove and return the head of the list stored in PLACE. |
| 428 | 162 Analogous to (prog1 (car PLACE) (setf PLACE (cdr PLACE))), though more |
| 163 careful about evaluating each argument only once and in the right order. | |
| 164 PLACE may be a symbol, or any generalized variable allowed by `setf'." | |
| 165 (if (symbolp place) | |
| 166 `(car (prog1 ,place (setq ,place (cdr ,place)))) | |
| 167 (cl-do-pop place))) | |
| 168 | |
| 3343 | 169 (defmacro push (newelt listname) |
| 3355 | 170 "Add NEWELT at the beginning of the list stored in LISTNAME. |
| 171 Analogous to (setf LISTNAME (cons NEWELT LISTNAME)), though more careful | |
| 172 about evaluating each argument only once and in the right order. LISTNAME | |
| 173 may be a symbol, or any generalized variable allowed by `setf'; that is, it | |
| 174 does not necessarily have to be a list, though `push' is most often used on | |
| 175 lists. " | |
| 3343 | 176 (if (symbolp listname) `(setq ,listname (cons ,newelt ,listname)) |
| 177 (list 'callf2 'cons newelt listname))) | |
| 428 | 178 |
| 3343 | 179 (defmacro pushnew (newelt listname &rest keys) |
| 3355 | 180 "Add NEWELT at the beginning of LISTNAME, unless it's already in LISTNAME. |
| 3343 | 181 Like (push NEWELT LISTNAME), except that the list is unmodified if NEWELT is |
| 182 `eql' to an element already on the list. | |
|
5066
545ec923b4eb
add documentation on keywords to cl*.el
Ben Wing <ben@xemacs.org>
parents:
4995
diff
changeset
|
183 Keywords supported: :test :test-not :key |
|
545ec923b4eb
add documentation on keywords to cl*.el
Ben Wing <ben@xemacs.org>
parents:
4995
diff
changeset
|
184 See `member*' for the meaning of :test, :test-not and :key." |
| 3343 | 185 (if (symbolp listname) (list 'setq listname |
| 186 (list* 'adjoin newelt listname keys)) | |
| 187 (list* 'callf2 'adjoin newelt listname keys))) | |
| 428 | 188 |
| 189 (defun cl-set-elt (seq n val) | |
| 190 (if (listp seq) (setcar (nthcdr n seq) val) (aset seq n val))) | |
| 191 | |
| 192 (defun cl-set-nthcdr (n list x) | |
| 193 (if (<= n 0) x (setcdr (nthcdr (1- n) list) x) list)) | |
| 194 | |
| 195 (defun cl-set-buffer-substring (start end val) | |
| 196 (save-excursion (delete-region start end) | |
| 197 (goto-char start) | |
| 198 (insert val) | |
| 199 val)) | |
| 200 | |
| 201 (defun cl-set-substring (str start end val) | |
| 202 (if end (if (< end 0) (incf end (length str))) | |
| 203 (setq end (length str))) | |
| 2136 | 204 (if (< start 0) (incf start (length str))) |
| 428 | 205 (concat (and (> start 0) (substring str 0 start)) |
| 206 val | |
| 207 (and (< end (length str)) (substring str end)))) | |
| 208 | |
| 209 | |
| 210 ;;; Control structures. | |
| 211 | |
| 212 ;; The macros `when' and `unless' are so useful that we want them to | |
| 213 ;; ALWAYS be available. So they've been moved from cl.el to eval.c. | |
| 214 ;; Note: FSF Emacs moved them to subr.el in FSF 20. | |
| 215 | |
| 2153 | 216 (defalias 'cl-map-extents 'map-extents) |
| 428 | 217 |
| 218 | |
| 219 ;;; Blocks and exits. | |
| 220 | |
|
4677
8f1ee2d15784
Support full Common Lisp multiple values in C.
Aidan Kehoe <kehoea@parhasard.net>
parents:
3355
diff
changeset
|
221 ;; This used to be #'identity, but that didn't preserve multiple values in |
|
8f1ee2d15784
Support full Common Lisp multiple values in C.
Aidan Kehoe <kehoea@parhasard.net>
parents:
3355
diff
changeset
|
222 ;; interpreted code. #'and isn't great either, there's no error on too many |
|
8f1ee2d15784
Support full Common Lisp multiple values in C.
Aidan Kehoe <kehoea@parhasard.net>
parents:
3355
diff
changeset
|
223 ;; arguments passed to it when interpreted. Fortunately most of the places |
|
8f1ee2d15784
Support full Common Lisp multiple values in C.
Aidan Kehoe <kehoea@parhasard.net>
parents:
3355
diff
changeset
|
224 ;; where cl-block-wrapper is called are generated from old, established |
|
8f1ee2d15784
Support full Common Lisp multiple values in C.
Aidan Kehoe <kehoea@parhasard.net>
parents:
3355
diff
changeset
|
225 ;; macros, so too many arguments resulting from human error is unlikely; and |
|
8f1ee2d15784
Support full Common Lisp multiple values in C.
Aidan Kehoe <kehoea@parhasard.net>
parents:
3355
diff
changeset
|
226 ;; the byte compile handler in cl-macs.el warns if more than one arg is |
|
8f1ee2d15784
Support full Common Lisp multiple values in C.
Aidan Kehoe <kehoea@parhasard.net>
parents:
3355
diff
changeset
|
227 ;; passed to it. |
|
8f1ee2d15784
Support full Common Lisp multiple values in C.
Aidan Kehoe <kehoea@parhasard.net>
parents:
3355
diff
changeset
|
228 (defalias 'cl-block-wrapper 'and) |
|
8f1ee2d15784
Support full Common Lisp multiple values in C.
Aidan Kehoe <kehoea@parhasard.net>
parents:
3355
diff
changeset
|
229 |
| 428 | 230 (defalias 'cl-block-throw 'throw) |
| 231 | |
|
4677
8f1ee2d15784
Support full Common Lisp multiple values in C.
Aidan Kehoe <kehoea@parhasard.net>
parents:
3355
diff
changeset
|
232 ;;; XEmacs; multiple values are in eval.c and cl-macs.el. |
| 2153 | 233 |
|
4677
8f1ee2d15784
Support full Common Lisp multiple values in C.
Aidan Kehoe <kehoea@parhasard.net>
parents:
3355
diff
changeset
|
234 ;;; We no longer support `multiple-value-apply', which was ill-conceived to |
|
8f1ee2d15784
Support full Common Lisp multiple values in C.
Aidan Kehoe <kehoea@parhasard.net>
parents:
3355
diff
changeset
|
235 ;;; start with, is not specified by Common Lisp, and which nothing uses, |
|
8f1ee2d15784
Support full Common Lisp multiple values in C.
Aidan Kehoe <kehoea@parhasard.net>
parents:
3355
diff
changeset
|
236 ;;; according to Google Code Search, as of Sat Mar 14 23:31:35 GMT 2009. |
| 2153 | 237 |
|
4677
8f1ee2d15784
Support full Common Lisp multiple values in C.
Aidan Kehoe <kehoea@parhasard.net>
parents:
3355
diff
changeset
|
238 (make-obsolete 'multiple-value-apply 'multiple-value-call) |
| 428 | 239 |
| 240 ;;; Macros. | |
| 241 | |
| 242 (defvar cl-macro-environment nil) | |
| 243 ;; XEmacs: we renamed the internal function to macroexpand-internal | |
| 244 ;; to avoid doc-file problems. | |
| 245 (defvar cl-old-macroexpand (prog1 (symbol-function 'macroexpand-internal) | |
| 246 (defalias 'macroexpand 'cl-macroexpand))) | |
| 247 | |
| 248 (defun cl-macroexpand (cl-macro &optional cl-env) | |
| 249 "Return result of expanding macros at top level of FORM. | |
| 250 If FORM is not a macro call, it is returned unchanged. | |
| 251 Otherwise, the macro is expanded and the expansion is considered | |
| 252 in place of FORM. When a non-macro-call results, it is returned. | |
| 253 | |
| 442 | 254 The second optional arg ENVIRONMENT specifies an environment of macro |
| 428 | 255 definitions to shadow the loaded ones for use in file byte-compilation." |
| 256 (let ((cl-macro-environment cl-env)) | |
| 257 (while (progn (setq cl-macro (funcall cl-old-macroexpand cl-macro cl-env)) | |
| 258 (and (symbolp cl-macro) | |
| 259 (cdr (assq (symbol-name cl-macro) cl-env)))) | |
| 260 (setq cl-macro (cadr (assq (symbol-name cl-macro) cl-env)))) | |
| 261 cl-macro)) | |
| 262 | |
| 263 | |
| 264 ;;; Declarations. | |
| 265 | |
| 266 (defvar cl-compiling-file nil) | |
| 267 (defun cl-compiling-file () | |
| 268 (or cl-compiling-file | |
| 269 ;; XEmacs change | |
| 270 ; (and (boundp 'outbuffer) (bufferp (symbol-value 'outbuffer)) | |
| 271 ; (equal (buffer-name (symbol-value 'outbuffer)) | |
| 272 ; " *Compiler Output*")) | |
| 273 (and (boundp 'byte-compile-outbuffer) | |
| 274 (bufferp (symbol-value 'byte-compile-outbuffer)) | |
| 275 (equal (buffer-name (symbol-value 'byte-compile-outbuffer)) | |
| 276 " *Compiler Output*")) | |
| 277 )) | |
| 278 | |
| 279 (defvar cl-proclaims-deferred nil) | |
| 280 | |
| 281 (defun proclaim (spec) | |
| 282 (if (fboundp 'cl-do-proclaim) (cl-do-proclaim spec t) | |
| 283 (push spec cl-proclaims-deferred)) | |
| 284 nil) | |
| 285 | |
| 286 (defmacro declaim (&rest specs) | |
| 287 (let ((body (mapcar (function (lambda (x) (list 'proclaim (list 'quote x)))) | |
| 288 specs))) | |
| 289 (if (cl-compiling-file) (list* 'eval-when '(compile load eval) body) | |
| 290 (cons 'progn body)))) ; avoid loading cl-macs.el for eval-when | |
| 291 | |
| 292 | |
| 293 ;;; Symbols. | |
| 294 | |
| 295 (defun cl-random-time () | |
| 296 (let* ((time (copy-sequence (current-time-string))) (i (length time)) (v 0)) | |
| 297 (while (>= (decf i) 0) (setq v (+ (* v 3) (aref time i)))) | |
| 2509 | 298 (if-fboundp 'coerce-number |
| 299 (coerce-number v 'fixnum) | |
| 1983 | 300 v))) |
| 428 | 301 |
| 302 (defvar *gensym-counter* (* (logand (cl-random-time) 1023) 100)) | |
| 303 | |
| 2153 | 304 ;; XEmacs change: gensym and gentemp moved here from cl-macs.el |
| 442 | 305 (defun gensym (&optional arg) |
| 306 "Generate a new uninterned symbol. | |
| 2071 | 307 The name is made by appending a number to a prefix. If ARG is a string, it |
| 308 is the prefix, otherwise the prefix defaults to \"G\". If ARG is an integer, | |
| 309 the internal counter is reset to that number before creating the name. | |
| 310 There is no way to specify both using this function." | |
| 442 | 311 (let ((prefix (if (stringp arg) arg "G")) |
| 312 (num (if (integerp arg) arg | |
| 313 (prog1 *gensym-counter* | |
| 314 (setq *gensym-counter* (1+ *gensym-counter*)))))) | |
| 315 (make-symbol (format "%s%d" prefix num)))) | |
| 316 | |
| 317 (defun gentemp (&optional arg) | |
| 318 "Generate a new interned symbol with a unique name. | |
| 2071 | 319 The name is made by appending a number to ARG, default \"G\". |
| 320 If ARG is not a string, it is ignored." | |
| 442 | 321 (let ((prefix (if (stringp arg) arg "G")) |
| 322 name) | |
| 323 (while (intern-soft (setq name (format "%s%d" prefix *gensym-counter*))) | |
| 324 (setq *gensym-counter* (1+ *gensym-counter*))) | |
| 325 (intern name))) | |
| 428 | 326 |
| 327 ;;; Numbers. | |
| 328 | |
|
4885
6772ce4d982b
Fix hash tables, #'member*, #'assoc*, #'eql compiler macros if bignums
Aidan Kehoe <kehoea@parhasard.net>
parents:
4783
diff
changeset
|
329 ;; XEmacs change: ditch floatp-safe. |
| 428 | 330 |
| 446 | 331 (defun plusp (number) |
| 428 | 332 "Return t if NUMBER is positive." |
| 446 | 333 (> number 0)) |
| 334 | |
| 335 (defun minusp (number) | |
| 336 "Return t if NUMBER is negative." | |
| 337 (< number 0)) | |
| 428 | 338 |
| 446 | 339 (defun oddp (integer) |
| 428 | 340 "Return t if INTEGER is odd." |
| 446 | 341 (eq (logand integer 1) 1)) |
| 428 | 342 |
| 446 | 343 (defun evenp (integer) |
| 428 | 344 "Return t if INTEGER is even." |
| 446 | 345 (eq (logand integer 1) 0)) |
| 428 | 346 |
| 2153 | 347 ;; XEmacs addition |
| 348 (defalias 'cl-abs 'abs) | |
| 428 | 349 |
| 350 (defvar *random-state* (vector 'cl-random-state-tag -1 30 (cl-random-time))) | |
| 351 | |
| 352 ;;; The following are set by code in cl-extra.el | |
| 353 (defconst most-positive-float nil | |
| 354 "The float closest in value to positive infinity.") | |
| 355 (defconst most-negative-float nil | |
| 356 "The float closest in value to negative infinity.") | |
| 357 (defconst least-positive-float nil | |
| 358 "The positive float closest in value to 0.") | |
| 359 (defconst least-negative-float nil | |
| 360 "The negative float closest in value to 0.") | |
| 361 (defconst least-positive-normalized-float nil) | |
| 362 (defconst least-negative-normalized-float nil) | |
| 363 (defconst float-epsilon nil) | |
| 364 (defconst float-negative-epsilon nil) | |
| 365 | |
| 366 | |
| 367 ;;; Sequence functions. | |
| 368 | |
| 369 (defalias 'copy-seq 'copy-sequence) | |
| 370 | |
| 2153 | 371 (defalias 'svref 'aref) |
| 428 | 372 |
| 373 ;;; List functions. | |
| 374 | |
| 375 ;; These functions are made known to the byte-compiler by cl-macs.el | |
| 376 ;; and turned into efficient car and cdr bytecodes. | |
| 377 | |
| 378 (defalias 'first 'car) | |
| 379 (defalias 'rest 'cdr) | |
| 380 (defalias 'endp 'null) | |
| 381 | |
| 2153 | 382 ;; XEmacs change: make it a real function |
| 428 | 383 (defun second (x) |
| 384 "Return the second element of the list LIST." | |
| 385 (car (cdr x))) | |
| 386 | |
| 387 (defun third (x) | |
| 2153 | 388 "Return the third element of the list X." |
| 428 | 389 (car (cdr (cdr x)))) |
| 390 | |
| 391 (defun fourth (x) | |
| 2153 | 392 "Return the fourth element of the list X." |
| 428 | 393 (nth 3 x)) |
| 394 | |
| 395 (defun fifth (x) | |
| 2153 | 396 "Return the fifth element of the list X." |
| 428 | 397 (nth 4 x)) |
| 398 | |
| 399 (defun sixth (x) | |
| 2153 | 400 "Return the sixth element of the list X." |
| 428 | 401 (nth 5 x)) |
| 402 | |
| 403 (defun seventh (x) | |
| 2153 | 404 "Return the seventh element of the list X." |
| 428 | 405 (nth 6 x)) |
| 406 | |
| 407 (defun eighth (x) | |
| 2153 | 408 "Return the eighth element of the list X." |
| 428 | 409 (nth 7 x)) |
| 410 | |
| 411 (defun ninth (x) | |
| 2153 | 412 "Return the ninth element of the list X." |
| 428 | 413 (nth 8 x)) |
| 414 | |
| 415 (defun tenth (x) | |
| 2153 | 416 "Return the tenth element of the list X." |
| 428 | 417 (nth 9 x)) |
| 418 | |
| 2153 | 419 ;; XEmacs change: Emacs defines caar, cadr, cdar, and cddr in subr.el. |
| 428 | 420 (defun caar (x) |
| 421 "Return the `car' of the `car' of X." | |
| 422 (car (car x))) | |
| 423 | |
| 424 (defun cadr (x) | |
| 425 "Return the `car' of the `cdr' of X." | |
| 426 (car (cdr x))) | |
| 427 | |
| 428 (defun cdar (x) | |
| 429 "Return the `cdr' of the `car' of X." | |
| 430 (cdr (car x))) | |
| 431 | |
| 432 (defun cddr (x) | |
| 433 "Return the `cdr' of the `cdr' of X." | |
| 434 (cdr (cdr x))) | |
| 435 | |
| 436 (defun caaar (x) | |
| 437 "Return the `car' of the `car' of the `car' of X." | |
| 438 (car (car (car x)))) | |
| 439 | |
| 440 (defun caadr (x) | |
| 441 "Return the `car' of the `car' of the `cdr' of X." | |
| 442 (car (car (cdr x)))) | |
| 443 | |
| 444 (defun cadar (x) | |
| 445 "Return the `car' of the `cdr' of the `car' of X." | |
| 446 (car (cdr (car x)))) | |
| 447 | |
| 448 (defun caddr (x) | |
| 449 "Return the `car' of the `cdr' of the `cdr' of X." | |
| 450 (car (cdr (cdr x)))) | |
| 451 | |
| 452 (defun cdaar (x) | |
| 453 "Return the `cdr' of the `car' of the `car' of X." | |
| 454 (cdr (car (car x)))) | |
| 455 | |
| 456 (defun cdadr (x) | |
| 457 "Return the `cdr' of the `car' of the `cdr' of X." | |
| 458 (cdr (car (cdr x)))) | |
| 459 | |
| 460 (defun cddar (x) | |
| 461 "Return the `cdr' of the `cdr' of the `car' of X." | |
| 462 (cdr (cdr (car x)))) | |
| 463 | |
| 464 (defun cdddr (x) | |
| 465 "Return the `cdr' of the `cdr' of the `cdr' of X." | |
| 466 (cdr (cdr (cdr x)))) | |
| 467 | |
| 468 (defun caaaar (x) | |
| 469 "Return the `car' of the `car' of the `car' of the `car' of X." | |
| 470 (car (car (car (car x))))) | |
| 471 | |
| 472 (defun caaadr (x) | |
| 473 "Return the `car' of the `car' of the `car' of the `cdr' of X." | |
| 474 (car (car (car (cdr x))))) | |
| 475 | |
| 476 (defun caadar (x) | |
| 477 "Return the `car' of the `car' of the `cdr' of the `car' of X." | |
| 478 (car (car (cdr (car x))))) | |
| 479 | |
| 480 (defun caaddr (x) | |
| 481 "Return the `car' of the `car' of the `cdr' of the `cdr' of X." | |
| 482 (car (car (cdr (cdr x))))) | |
| 483 | |
| 484 (defun cadaar (x) | |
| 485 "Return the `car' of the `cdr' of the `car' of the `car' of X." | |
| 486 (car (cdr (car (car x))))) | |
| 487 | |
| 488 (defun cadadr (x) | |
| 489 "Return the `car' of the `cdr' of the `car' of the `cdr' of X." | |
| 490 (car (cdr (car (cdr x))))) | |
| 491 | |
| 492 (defun caddar (x) | |
| 493 "Return the `car' of the `cdr' of the `cdr' of the `car' of X." | |
| 494 (car (cdr (cdr (car x))))) | |
| 495 | |
| 496 (defun cadddr (x) | |
| 497 "Return the `car' of the `cdr' of the `cdr' of the `cdr' of X." | |
| 498 (car (cdr (cdr (cdr x))))) | |
| 499 | |
| 500 (defun cdaaar (x) | |
| 501 "Return the `cdr' of the `car' of the `car' of the `car' of X." | |
| 502 (cdr (car (car (car x))))) | |
| 503 | |
| 504 (defun cdaadr (x) | |
| 505 "Return the `cdr' of the `car' of the `car' of the `cdr' of X." | |
| 506 (cdr (car (car (cdr x))))) | |
| 507 | |
| 508 (defun cdadar (x) | |
| 509 "Return the `cdr' of the `car' of the `cdr' of the `car' of X." | |
| 510 (cdr (car (cdr (car x))))) | |
| 511 | |
| 512 (defun cdaddr (x) | |
| 513 "Return the `cdr' of the `car' of the `cdr' of the `cdr' of X." | |
| 514 (cdr (car (cdr (cdr x))))) | |
| 515 | |
| 516 (defun cddaar (x) | |
| 517 "Return the `cdr' of the `cdr' of the `car' of the `car' of X." | |
| 518 (cdr (cdr (car (car x))))) | |
| 519 | |
| 520 (defun cddadr (x) | |
| 521 "Return the `cdr' of the `cdr' of the `car' of the `cdr' of X." | |
| 522 (cdr (cdr (car (cdr x))))) | |
| 523 | |
| 524 (defun cdddar (x) | |
| 525 "Return the `cdr' of the `cdr' of the `cdr' of the `car' of X." | |
| 526 (cdr (cdr (cdr (car x))))) | |
| 527 | |
| 528 (defun cddddr (x) | |
| 529 "Return the `cdr' of the `cdr' of the `cdr' of the `cdr' of X." | |
| 530 (cdr (cdr (cdr (cdr x))))) | |
| 531 | |
| 532 ;;; `last' is implemented as a C primitive, as of 1998-11 | |
| 2153 | 533 ;;(defun last* (x &optional n) |
| 534 ;; "Returns the last link in the list LIST. | |
| 535 ;;With optional argument N, returns Nth-to-last link (default 1)." | |
| 536 ;; (if n | |
| 537 ;; (let ((m 0) (p x)) | |
| 538 ;; (while (consp p) (incf m) (pop p)) | |
| 539 ;; (if (<= n 0) p | |
| 540 ;; (if (< n m) (nthcdr (- m n) x) x))) | |
| 541 ;; (while (consp (cdr x)) (pop x)) | |
| 542 ;; x)) | |
| 428 | 543 |
| 544 (defun list* (arg &rest rest) ; See compiler macro in cl-macs.el | |
| 545 "Return a new list with specified args as elements, cons'd to last arg. | |
| 546 Thus, `(list* A B C D)' is equivalent to `(nconc (list A B C) D)', or to | |
| 547 `(cons A (cons B (cons C D)))'." | |
| 548 (cond ((not rest) arg) | |
| 549 ((not (cdr rest)) (cons arg (car rest))) | |
| 550 (t (let* ((n (length rest)) | |
| 551 (copy (copy-sequence rest)) | |
| 552 (last (nthcdr (- n 2) copy))) | |
| 553 (setcdr last (car (cdr last))) | |
| 554 (cons arg copy))))) | |
| 555 | |
| 556 (defun ldiff (list sublist) | |
| 557 "Return a copy of LIST with the tail SUBLIST removed." | |
| 558 (let ((res nil)) | |
| 559 (while (and (consp list) (not (eq list sublist))) | |
| 560 (push (pop list) res)) | |
| 561 (nreverse res))) | |
| 562 | |
| 563 ;;; `copy-list' is implemented as a C primitive, as of 1998-11 | |
| 564 | |
| 565 ;(defun copy-list (list) | |
| 566 ; "Return a copy of a list, which may be a dotted list. | |
| 567 ;The elements of the list are not copied, just the list structure itself." | |
| 568 ; (if (consp list) | |
| 569 ; (let ((res nil)) | |
| 570 ; (while (consp list) (push (pop list) res)) | |
| 571 ; (prog1 (nreverse res) (setcdr res list))) | |
| 572 ; (car list))) | |
| 573 | |
| 574 (defun cl-maclisp-member (item list) | |
| 575 (while (and list (not (equal item (car list)))) (setq list (cdr list))) | |
| 576 list) | |
| 577 | |
| 578 (defalias 'cl-member 'memq) ; for compatibility with old CL package | |
| 579 (defalias 'cl-floor 'floor*) | |
| 580 (defalias 'cl-ceiling 'ceiling*) | |
| 581 (defalias 'cl-truncate 'truncate*) | |
| 582 (defalias 'cl-round 'round*) | |
| 583 (defalias 'cl-mod 'mod*) | |
| 584 | |
| 585 (defun adjoin (cl-item cl-list &rest cl-keys) ; See compiler macro in cl-macs | |
| 586 "Return ITEM consed onto the front of LIST only if it's not already there. | |
| 587 Otherwise, return LIST unmodified. | |
|
5066
545ec923b4eb
add documentation on keywords to cl*.el
Ben Wing <ben@xemacs.org>
parents:
4995
diff
changeset
|
588 Keywords supported: :test :test-not :key |
|
545ec923b4eb
add documentation on keywords to cl*.el
Ben Wing <ben@xemacs.org>
parents:
4995
diff
changeset
|
589 See `member*' for the meaning of :test, :test-not and :key." |
| 428 | 590 (cond ((or (equal cl-keys '(:test eq)) |
| 591 (and (null cl-keys) (not (numberp cl-item)))) | |
| 592 (if (memq cl-item cl-list) cl-list (cons cl-item cl-list))) | |
| 593 ((or (equal cl-keys '(:test equal)) (null cl-keys)) | |
| 594 (if (member cl-item cl-list) cl-list (cons cl-item cl-list))) | |
| 595 (t (apply 'cl-adjoin cl-item cl-list cl-keys)))) | |
| 596 | |
| 597 (defun subst (cl-new cl-old cl-tree &rest cl-keys) | |
| 598 "Substitute NEW for OLD everywhere in TREE (non-destructively). | |
| 599 Return a copy of TREE with all elements `eql' to OLD replaced by NEW. | |
|
5066
545ec923b4eb
add documentation on keywords to cl*.el
Ben Wing <ben@xemacs.org>
parents:
4995
diff
changeset
|
600 Keywords supported: :test :test-not :key |
|
545ec923b4eb
add documentation on keywords to cl*.el
Ben Wing <ben@xemacs.org>
parents:
4995
diff
changeset
|
601 See `member*' for the meaning of :test, :test-not and :key." |
|
4885
6772ce4d982b
Fix hash tables, #'member*, #'assoc*, #'eql compiler macros if bignums
Aidan Kehoe <kehoea@parhasard.net>
parents:
4783
diff
changeset
|
602 (if (or cl-keys (and (numberp cl-old) (not (fixnump cl-old)))) |
| 428 | 603 (apply 'sublis (list (cons cl-old cl-new)) cl-tree cl-keys) |
| 604 (cl-do-subst cl-new cl-old cl-tree))) | |
| 605 | |
| 606 (defun cl-do-subst (cl-new cl-old cl-tree) | |
| 607 (cond ((eq cl-tree cl-old) cl-new) | |
| 608 ((consp cl-tree) | |
| 609 (let ((a (cl-do-subst cl-new cl-old (car cl-tree))) | |
| 610 (d (cl-do-subst cl-new cl-old (cdr cl-tree)))) | |
| 611 (if (and (eq a (car cl-tree)) (eq d (cdr cl-tree))) | |
| 612 cl-tree (cons a d)))) | |
| 613 (t cl-tree))) | |
| 614 | |
| 615 (defun acons (a b c) | |
| 616 "Return a new alist created by adding (KEY . VALUE) to ALIST." | |
| 617 (cons (cons a b) c)) | |
| 618 | |
| 619 (defun pairlis (a b &optional c) (nconc (mapcar* 'cons a b) c)) | |
| 620 | |
| 621 | |
| 622 ;;; Miscellaneous. | |
| 623 | |
| 624 ;; XEmacs change | |
| 625 (define-error 'cl-assertion-failed "Assertion failed") | |
| 626 | |
| 2153 | 627 ;; XEmacs change: omit the autoload rules; we handle those a different way |
| 428 | 628 |
| 629 ;;; Define data for indentation and edebug. | |
|
4995
8431b52e43b1
Move the various map* functions to C; add #'map-into.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4885
diff
changeset
|
630 (mapc |
| 428 | 631 #'(lambda (entry) |
|
4995
8431b52e43b1
Move the various map* functions to C; add #'map-into.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4885
diff
changeset
|
632 (mapc |
| 428 | 633 #'(lambda (func) |
| 634 (put func 'lisp-indent-function (nth 1 entry)) | |
| 635 (put func 'lisp-indent-hook (nth 1 entry)) | |
| 636 (or (get func 'edebug-form-spec) | |
| 637 (put func 'edebug-form-spec (nth 2 entry)))) | |
| 638 (car entry))) | |
| 639 '(((defun* defmacro*) defun) | |
| 640 ((function*) nil | |
| 641 (&or symbolp ([&optional 'macro] 'lambda (&rest sexp) &rest form))) | |
| 642 ((eval-when) 1 (sexp &rest form)) | |
| 643 ((when unless) 1 (&rest form)) | |
| 644 ((declare) nil (&rest sexp)) | |
| 645 ((the) 1 (sexp &rest form)) | |
| 646 ((case ecase typecase etypecase) 1 (form &rest (sexp &rest form))) | |
| 647 ((block return-from) 1 (sexp &rest form)) | |
| 648 ((return) nil (&optional form)) | |
| 649 ((do do*) 2 ((&rest &or symbolp (symbolp &optional form form)) | |
| 650 (form &rest form) | |
| 651 &rest form)) | |
| 652 ((dolist dotimes) 1 ((symbolp form &rest form) &rest form)) | |
| 653 ((do-symbols) 1 ((symbolp form &optional form form) &rest form)) | |
| 654 ((do-all-symbols) 1 ((symbolp form &optional form) &rest form)) | |
| 655 ((psetq setf psetf) nil edebug-setq-form) | |
| 656 ((progv) 2 (&rest form)) | |
| 657 ((flet labels macrolet) 1 | |
| 658 ((&rest (sexp sexp &rest form)) &rest form)) | |
| 659 ((symbol-macrolet lexical-let lexical-let*) 1 | |
| 660 ((&rest &or symbolp (symbolp form)) &rest form)) | |
| 661 ((multiple-value-bind) 2 ((&rest symbolp) &rest form)) | |
| 662 ((multiple-value-setq) 1 ((&rest symbolp) &rest form)) | |
| 663 ((incf decf remf pop push pushnew shiftf rotatef) nil (&rest form)) | |
| 664 ((letf letf*) 1 ((&rest (&rest form)) &rest form)) | |
| 665 ((callf destructuring-bind) 2 (sexp form &rest form)) | |
| 666 ((callf2) 3 (sexp form form &rest form)) | |
| 667 ((loop) defun (&rest &or symbolp form)) | |
| 668 ((ignore-errors) 0 (&rest form)))) | |
| 669 | |
| 670 | |
| 671 ;;; This goes here so that cl-macs can find it if it loads right now. | |
| 672 (provide 'cl-19) ; usage: (require 'cl-19 "cl") | |
| 673 | |
| 674 | |
| 675 ;;; Things to do after byte-compiler is loaded. | |
| 676 ;;; As a side effect, we cause cl-macs to be loaded when compiling, so | |
| 677 ;;; that the compiler-macros defined there will be present. | |
| 678 | |
| 679 (defvar cl-hacked-flag nil) | |
| 680 (defun cl-hack-byte-compiler () | |
| 681 (if (and (not cl-hacked-flag) (fboundp 'byte-compile-file-form)) | |
| 682 (progn | |
| 2153 | 683 (setq cl-hacked-flag t) ; Do it first, to prevent recursion. |
| 442 | 684 (when (not (fboundp 'cl-compile-time-init)) |
| 685 (load "cl-macs" nil t)) | |
| 2153 | 686 (cl-compile-time-init)))) ; In cl-macs.el. |
| 428 | 687 |
| 688 ;;; Try it now in case the compiler has already been loaded. | |
| 689 (cl-hack-byte-compiler) | |
| 690 | |
|
4683
0cc9d22c3732
Be more reliable about loading cl-macs at byte-compile time, cl.el.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4677
diff
changeset
|
691 ;;; Also make a hook in case compiler is loaded after this file. |
|
0cc9d22c3732
Be more reliable about loading cl-macs at byte-compile time, cl.el.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4677
diff
changeset
|
692 (add-hook 'bytecomp-load-hook 'cl-hack-byte-compiler) |
| 428 | 693 |
| 694 ;;; The following ensures that packages which expect the old-style cl.el | |
| 695 ;;; will be happy with this one. | |
| 696 | |
| 697 (provide 'cl) | |
| 698 | |
| 699 (run-hooks 'cl-load-hook) | |
| 700 | |
| 2153 | 701 ;;; arch-tag: 5f07fa74-f153-4524-9303-21f5be125851 |
| 428 | 702 ;;; cl.el ends here |