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comparison lisp/cl/cl-extra.el @ 0:376386a54a3c r19-14
Import from CVS: tag r19-14
| author | cvs |
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| date | Mon, 13 Aug 2007 08:45:50 +0200 |
| parents | |
| children | ac2d302a0011 |
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| 1 ;;; cl-extra.el --- Common Lisp extensions for GNU Emacs Lisp (part two) | |
| 2 | |
| 3 ;; Copyright (C) 1993 Free Software Foundation, Inc. | |
| 4 | |
| 5 ;; Author: Dave Gillespie <daveg@synaptics.com> | |
| 6 ;; Version: 2.02 | |
| 7 ;; Keywords: extensions | |
| 8 | |
| 9 ;; This file is part of XEmacs. | |
| 10 | |
| 11 ;; XEmacs is free software; you can redistribute it and/or modify it | |
| 12 ;; under the terms of the GNU General Public License as published by | |
| 13 ;; the Free Software Foundation; either version 2, or (at your option) | |
| 14 ;; any later version. | |
| 15 | |
| 16 ;; XEmacs is distributed in the hope that it will be useful, but | |
| 17 ;; WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 18 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 19 ;; General Public License for more details. | |
| 20 | |
| 21 ;; You should have received a copy of the GNU General Public License | |
| 22 ;; along with XEmacs; see the file COPYING. If not, write to the Free | |
| 23 ;; Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. | |
| 24 | |
| 25 ;;; Synched up with: FSF 19.30. | |
| 26 | |
| 27 ;;; Commentary: | |
| 28 | |
| 29 ;; These are extensions to Emacs Lisp that provide a degree of | |
| 30 ;; Common Lisp compatibility, beyond what is already built-in | |
| 31 ;; in Emacs Lisp. | |
| 32 ;; | |
| 33 ;; This package was written by Dave Gillespie; it is a complete | |
| 34 ;; rewrite of Cesar Quiroz's original cl.el package of December 1986. | |
| 35 ;; | |
| 36 ;; This package works with Emacs 18, Emacs 19, and XEmacs/Lucid Emacs 19. | |
| 37 ;; | |
| 38 ;; Bug reports, comments, and suggestions are welcome! | |
| 39 | |
| 40 ;; This file contains portions of the Common Lisp extensions | |
| 41 ;; package which are autoloaded since they are relatively obscure. | |
| 42 | |
| 43 ;; See cl.el for Change Log. | |
| 44 | |
| 45 | |
| 46 ;;; Code: | |
| 47 | |
| 48 (or (memq 'cl-19 features) | |
| 49 (error "Tried to load `cl-extra' before `cl'!")) | |
| 50 | |
| 51 | |
| 52 ;;; We define these here so that this file can compile without having | |
| 53 ;;; loaded the cl.el file already. | |
| 54 | |
| 55 (defmacro cl-push (x place) (list 'setq place (list 'cons x place))) | |
| 56 (defmacro cl-pop (place) | |
| 57 (list 'car (list 'prog1 place (list 'setq place (list 'cdr place))))) | |
| 58 | |
| 59 (defvar cl-emacs-type) | |
| 60 | |
| 61 | |
| 62 ;;; Type coercion. | |
| 63 | |
| 64 (defun coerce (x type) | |
| 65 "Coerce OBJECT to type TYPE. | |
| 66 TYPE is a Common Lisp type specifier." | |
| 67 (cond ((eq type 'list) (if (listp x) x (append x nil))) | |
| 68 ((eq type 'vector) (if (vectorp x) x (vconcat x))) | |
| 69 ((eq type 'string) (if (stringp x) x (concat x))) | |
| 70 ((eq type 'array) (if (arrayp x) x (vconcat x))) | |
| 71 ((and (eq type 'character) (stringp x) (= (length x) 1)) (aref x 0)) | |
| 72 ((and (eq type 'character) (symbolp x)) (coerce (symbol-name x) type)) | |
| 73 ((eq type 'float) (float x)) | |
| 74 ((typep x type) x) | |
| 75 (t (error "Can't coerce %s to type %s" x type)))) | |
| 76 | |
| 77 | |
| 78 ;;; Predicates. | |
| 79 | |
| 80 (defun equalp (x y) | |
| 81 "T if two Lisp objects have similar structures and contents. | |
| 82 This is like `equal', except that it accepts numerically equal | |
| 83 numbers of different types (float vs. integer), and also compares | |
| 84 strings case-insensitively." | |
| 85 (cond ((eq x y) t) | |
| 86 ((stringp x) | |
| 87 (and (stringp y) (= (length x) (length y)) | |
| 88 (or (equal x y) | |
| 89 (equal (downcase x) (downcase y))))) ; lazy but simple! | |
| 90 ((numberp x) | |
| 91 (and (numberp y) (= x y))) | |
| 92 ((consp x) | |
| 93 (while (and (consp x) (consp y) (equalp (cl-pop x) (cl-pop y)))) | |
| 94 (and (not (consp x)) (equalp x y))) | |
| 95 ((vectorp x) | |
| 96 (and (vectorp y) (= (length x) (length y)) | |
| 97 (let ((i (length x))) | |
| 98 (while (and (>= (setq i (1- i)) 0) | |
| 99 (equalp (aref x i) (aref y i)))) | |
| 100 (< i 0)))) | |
| 101 (t (equal x y)))) | |
| 102 | |
| 103 | |
| 104 ;;; Control structures. | |
| 105 | |
| 106 (defun cl-mapcar-many (cl-func cl-seqs) | |
| 107 (if (cdr (cdr cl-seqs)) | |
| 108 (let* ((cl-res nil) | |
| 109 (cl-n (apply 'min (mapcar 'length cl-seqs))) | |
| 110 (cl-i 0) | |
| 111 (cl-args (copy-sequence cl-seqs)) | |
| 112 cl-p1 cl-p2) | |
| 113 (setq cl-seqs (copy-sequence cl-seqs)) | |
| 114 (while (< cl-i cl-n) | |
| 115 (setq cl-p1 cl-seqs cl-p2 cl-args) | |
| 116 (while cl-p1 | |
| 117 (setcar cl-p2 | |
| 118 (if (consp (car cl-p1)) | |
| 119 (prog1 (car (car cl-p1)) | |
| 120 (setcar cl-p1 (cdr (car cl-p1)))) | |
| 121 (aref (car cl-p1) cl-i))) | |
| 122 (setq cl-p1 (cdr cl-p1) cl-p2 (cdr cl-p2))) | |
| 123 (cl-push (apply cl-func cl-args) cl-res) | |
| 124 (setq cl-i (1+ cl-i))) | |
| 125 (nreverse cl-res)) | |
| 126 (let ((cl-res nil) | |
| 127 (cl-x (car cl-seqs)) | |
| 128 (cl-y (nth 1 cl-seqs))) | |
| 129 (let ((cl-n (min (length cl-x) (length cl-y))) | |
| 130 (cl-i -1)) | |
| 131 (while (< (setq cl-i (1+ cl-i)) cl-n) | |
| 132 (cl-push (funcall cl-func | |
| 133 (if (consp cl-x) (cl-pop cl-x) (aref cl-x cl-i)) | |
| 134 (if (consp cl-y) (cl-pop cl-y) (aref cl-y cl-i))) | |
| 135 cl-res))) | |
| 136 (nreverse cl-res)))) | |
| 137 | |
| 138 (defun map (cl-type cl-func cl-seq &rest cl-rest) | |
| 139 "Map a function across one or more sequences, returning a sequence. | |
| 140 TYPE is the sequence type to return, FUNC is the function, and SEQS | |
| 141 are the argument sequences." | |
| 142 (let ((cl-res (apply 'mapcar* cl-func cl-seq cl-rest))) | |
| 143 (and cl-type (coerce cl-res cl-type)))) | |
| 144 | |
| 145 (defun maplist (cl-func cl-list &rest cl-rest) | |
| 146 "Map FUNC to each sublist of LIST or LISTS. | |
| 147 Like `mapcar', except applies to lists and their cdr's rather than to | |
| 148 the elements themselves." | |
| 149 (if cl-rest | |
| 150 (let ((cl-res nil) | |
| 151 (cl-args (cons cl-list (copy-sequence cl-rest))) | |
| 152 cl-p) | |
| 153 (while (not (memq nil cl-args)) | |
| 154 (cl-push (apply cl-func cl-args) cl-res) | |
| 155 (setq cl-p cl-args) | |
| 156 (while cl-p (setcar cl-p (cdr (cl-pop cl-p)) ))) | |
| 157 (nreverse cl-res)) | |
| 158 (let ((cl-res nil)) | |
| 159 (while cl-list | |
| 160 (cl-push (funcall cl-func cl-list) cl-res) | |
| 161 (setq cl-list (cdr cl-list))) | |
| 162 (nreverse cl-res)))) | |
| 163 | |
| 164 (defun mapc (cl-func cl-seq &rest cl-rest) | |
| 165 "Like `mapcar', but does not accumulate values returned by the function." | |
| 166 (if cl-rest | |
| 167 (apply 'map nil cl-func cl-seq cl-rest) | |
| 168 ;; XEmacs change: we call mapc-internal, which really doesn't | |
| 169 ;; accumulate any results. | |
| 170 (mapc-internal cl-func cl-seq)) | |
| 171 cl-seq) | |
| 172 | |
| 173 (defun mapl (cl-func cl-list &rest cl-rest) | |
| 174 "Like `maplist', but does not accumulate values returned by the function." | |
| 175 (if cl-rest | |
| 176 (apply 'maplist cl-func cl-list cl-rest) | |
| 177 (let ((cl-p cl-list)) | |
| 178 (while cl-p (funcall cl-func cl-p) (setq cl-p (cdr cl-p))))) | |
| 179 cl-list) | |
| 180 | |
| 181 (defun mapcan (cl-func cl-seq &rest cl-rest) | |
| 182 "Like `mapcar', but nconc's together the values returned by the function." | |
| 183 (apply 'nconc (apply 'mapcar* cl-func cl-seq cl-rest))) | |
| 184 | |
| 185 (defun mapcon (cl-func cl-list &rest cl-rest) | |
| 186 "Like `maplist', but nconc's together the values returned by the function." | |
| 187 (apply 'nconc (apply 'maplist cl-func cl-list cl-rest))) | |
| 188 | |
| 189 (defun some (cl-pred cl-seq &rest cl-rest) | |
| 190 "Return true if PREDICATE is true of any element of SEQ or SEQs. | |
| 191 If so, return the true (non-nil) value returned by PREDICATE." | |
| 192 (if (or cl-rest (nlistp cl-seq)) | |
| 193 (catch 'cl-some | |
| 194 (apply 'map nil | |
| 195 (function (lambda (&rest cl-x) | |
| 196 (let ((cl-res (apply cl-pred cl-x))) | |
| 197 (if cl-res (throw 'cl-some cl-res))))) | |
| 198 cl-seq cl-rest) nil) | |
| 199 (let ((cl-x nil)) | |
| 200 (while (and cl-seq (not (setq cl-x (funcall cl-pred (cl-pop cl-seq)))))) | |
| 201 cl-x))) | |
| 202 | |
| 203 (defun every (cl-pred cl-seq &rest cl-rest) | |
| 204 "Return true if PREDICATE is true of every element of SEQ or SEQs." | |
| 205 (if (or cl-rest (nlistp cl-seq)) | |
| 206 (catch 'cl-every | |
| 207 (apply 'map nil | |
| 208 (function (lambda (&rest cl-x) | |
| 209 (or (apply cl-pred cl-x) (throw 'cl-every nil)))) | |
| 210 cl-seq cl-rest) t) | |
| 211 (while (and cl-seq (funcall cl-pred (car cl-seq))) | |
| 212 (setq cl-seq (cdr cl-seq))) | |
| 213 (null cl-seq))) | |
| 214 | |
| 215 (defun notany (cl-pred cl-seq &rest cl-rest) | |
| 216 "Return true if PREDICATE is false of every element of SEQ or SEQs." | |
| 217 (not (apply 'some cl-pred cl-seq cl-rest))) | |
| 218 | |
| 219 (defun notevery (cl-pred cl-seq &rest cl-rest) | |
| 220 "Return true if PREDICATE is false of some element of SEQ or SEQs." | |
| 221 (not (apply 'every cl-pred cl-seq cl-rest))) | |
| 222 | |
| 223 ;;; Support for `loop'. | |
| 224 (defun cl-map-keymap (cl-func cl-map) | |
| 225 (while (symbolp cl-map) (setq cl-map (symbol-function cl-map))) | |
| 226 (if (eq cl-emacs-type 'lucid) (funcall 'map-keymap cl-func cl-map) | |
| 227 (if (listp cl-map) | |
| 228 (let ((cl-p cl-map)) | |
| 229 (while (consp (setq cl-p (cdr cl-p))) | |
| 230 (cond ((consp (car cl-p)) | |
| 231 (funcall cl-func (car (car cl-p)) (cdr (car cl-p)))) | |
| 232 ((vectorp (car cl-p)) | |
| 233 (cl-map-keymap cl-func (car cl-p))) | |
| 234 ((eq (car cl-p) 'keymap) | |
| 235 (setq cl-p nil))))) | |
| 236 (let ((cl-i -1)) | |
| 237 (while (< (setq cl-i (1+ cl-i)) (length cl-map)) | |
| 238 (if (aref cl-map cl-i) | |
| 239 (funcall cl-func cl-i (aref cl-map cl-i)))))))) | |
| 240 | |
| 241 (defun cl-map-keymap-recursively (cl-func-rec cl-map &optional cl-base) | |
| 242 (or cl-base | |
| 243 (setq cl-base (copy-sequence (if (eq cl-emacs-type 18) "0" [0])))) | |
| 244 (cl-map-keymap | |
| 245 (function | |
| 246 (lambda (cl-key cl-bind) | |
| 247 (aset cl-base (1- (length cl-base)) cl-key) | |
| 248 (if (keymapp cl-bind) | |
| 249 (cl-map-keymap-recursively | |
| 250 cl-func-rec cl-bind | |
| 251 (funcall (if (eq cl-emacs-type 18) 'concat 'vconcat) | |
| 252 cl-base (list 0))) | |
| 253 (funcall cl-func-rec cl-base cl-bind)))) | |
| 254 cl-map)) | |
| 255 | |
| 256 (defun cl-map-intervals (cl-func &optional cl-what cl-prop cl-start cl-end) | |
| 257 (or cl-what (setq cl-what (current-buffer))) | |
| 258 (if (bufferp cl-what) | |
| 259 (let (cl-mark cl-mark2 (cl-next t) cl-next2) | |
| 260 (save-excursion | |
| 261 (set-buffer cl-what) | |
| 262 (setq cl-mark (copy-marker (or cl-start (point-min)))) | |
| 263 (setq cl-mark2 (and cl-end (copy-marker cl-end)))) | |
| 264 (while (and cl-next (or (not cl-mark2) (< cl-mark cl-mark2))) | |
| 265 (setq cl-next (and (fboundp 'next-property-change) | |
| 266 (if cl-prop (next-single-property-change | |
| 267 cl-mark cl-prop cl-what) | |
| 268 (next-property-change cl-mark cl-what))) | |
| 269 cl-next2 (or cl-next (save-excursion | |
| 270 (set-buffer cl-what) (point-max)))) | |
| 271 (funcall cl-func (prog1 (marker-position cl-mark) | |
| 272 (set-marker cl-mark cl-next2)) | |
| 273 (if cl-mark2 (min cl-next2 cl-mark2) cl-next2))) | |
| 274 (set-marker cl-mark nil) (if cl-mark2 (set-marker cl-mark2 nil))) | |
| 275 (or cl-start (setq cl-start 0)) | |
| 276 (or cl-end (setq cl-end (length cl-what))) | |
| 277 (while (< cl-start cl-end) | |
| 278 (let ((cl-next (or (and (fboundp 'next-property-change) | |
| 279 (if cl-prop (next-single-property-change | |
| 280 cl-start cl-prop cl-what) | |
| 281 (next-property-change cl-start cl-what))) | |
| 282 cl-end))) | |
| 283 (funcall cl-func cl-start (min cl-next cl-end)) | |
| 284 (setq cl-start cl-next))))) | |
| 285 | |
| 286 (defun cl-map-overlays (cl-func &optional cl-buffer cl-start cl-end cl-arg) | |
| 287 (or cl-buffer (setq cl-buffer (current-buffer))) | |
| 288 (if (fboundp 'overlay-lists) | |
| 289 | |
| 290 ;; This is the preferred algorithm, though overlay-lists is undocumented. | |
| 291 (let (cl-ovl) | |
| 292 (save-excursion | |
| 293 (set-buffer cl-buffer) | |
| 294 (setq cl-ovl (overlay-lists)) | |
| 295 (if cl-start (setq cl-start (copy-marker cl-start))) | |
| 296 (if cl-end (setq cl-end (copy-marker cl-end)))) | |
| 297 (setq cl-ovl (nconc (car cl-ovl) (cdr cl-ovl))) | |
| 298 (while (and cl-ovl | |
| 299 (or (not (overlay-start (car cl-ovl))) | |
| 300 (and cl-end (>= (overlay-start (car cl-ovl)) cl-end)) | |
| 301 (and cl-start (<= (overlay-end (car cl-ovl)) cl-start)) | |
| 302 (not (funcall cl-func (car cl-ovl) cl-arg)))) | |
| 303 (setq cl-ovl (cdr cl-ovl))) | |
| 304 (if cl-start (set-marker cl-start nil)) | |
| 305 (if cl-end (set-marker cl-end nil))) | |
| 306 | |
| 307 ;; This alternate algorithm fails to find zero-length overlays. | |
| 308 (let ((cl-mark (save-excursion (set-buffer cl-buffer) | |
| 309 (copy-marker (or cl-start (point-min))))) | |
| 310 (cl-mark2 (and cl-end (save-excursion (set-buffer cl-buffer) | |
| 311 (copy-marker cl-end)))) | |
| 312 cl-pos cl-ovl) | |
| 313 (while (save-excursion | |
| 314 (and (setq cl-pos (marker-position cl-mark)) | |
| 315 (< cl-pos (or cl-mark2 (point-max))) | |
| 316 (progn | |
| 317 (set-buffer cl-buffer) | |
| 318 (setq cl-ovl (overlays-at cl-pos)) | |
| 319 (set-marker cl-mark (next-overlay-change cl-pos))))) | |
| 320 (while (and cl-ovl | |
| 321 (or (/= (overlay-start (car cl-ovl)) cl-pos) | |
| 322 (not (and (funcall cl-func (car cl-ovl) cl-arg) | |
| 323 (set-marker cl-mark nil))))) | |
| 324 (setq cl-ovl (cdr cl-ovl)))) | |
| 325 (set-marker cl-mark nil) (if cl-mark2 (set-marker cl-mark2 nil))))) | |
| 326 | |
| 327 ;;; Support for `setf'. | |
| 328 (defun cl-set-frame-visible-p (frame val) | |
| 329 (cond ((null val) (make-frame-invisible frame)) | |
| 330 ((eq val 'icon) (iconify-frame frame)) | |
| 331 (t (make-frame-visible frame))) | |
| 332 val) | |
| 333 | |
| 334 ;;; Support for `progv'. | |
| 335 (defvar cl-progv-save) | |
| 336 (defun cl-progv-before (syms values) | |
| 337 (while syms | |
| 338 (cl-push (if (boundp (car syms)) | |
| 339 (cons (car syms) (symbol-value (car syms))) | |
| 340 (car syms)) cl-progv-save) | |
| 341 (if values | |
| 342 (set (cl-pop syms) (cl-pop values)) | |
| 343 (makunbound (cl-pop syms))))) | |
| 344 | |
| 345 (defun cl-progv-after () | |
| 346 (while cl-progv-save | |
| 347 (if (consp (car cl-progv-save)) | |
| 348 (set (car (car cl-progv-save)) (cdr (car cl-progv-save))) | |
| 349 (makunbound (car cl-progv-save))) | |
| 350 (cl-pop cl-progv-save))) | |
| 351 | |
| 352 | |
| 353 ;;; Numbers. | |
| 354 | |
| 355 (defun gcd (&rest args) | |
| 356 "Return the greatest common divisor of the arguments." | |
| 357 (let ((a (abs (or (cl-pop args) 0)))) | |
| 358 (while args | |
| 359 (let ((b (abs (cl-pop args)))) | |
| 360 (while (> b 0) (setq b (% a (setq a b)))))) | |
| 361 a)) | |
| 362 | |
| 363 (defun lcm (&rest args) | |
| 364 "Return the least common multiple of the arguments." | |
| 365 (if (memq 0 args) | |
| 366 0 | |
| 367 (let ((a (abs (or (cl-pop args) 1)))) | |
| 368 (while args | |
| 369 (let ((b (abs (cl-pop args)))) | |
| 370 (setq a (* (/ a (gcd a b)) b)))) | |
| 371 a))) | |
| 372 | |
| 373 (defun isqrt (a) | |
| 374 "Return the integer square root of the argument." | |
| 375 (if (and (integerp a) (> a 0)) | |
| 376 (let ((g (cond ((>= a 1000000) 10000) ((>= a 10000) 1000) | |
| 377 ((>= a 100) 100) (t 10))) | |
| 378 g2) | |
| 379 (while (< (setq g2 (/ (+ g (/ a g)) 2)) g) | |
| 380 (setq g g2)) | |
| 381 g) | |
| 382 (if (eq a 0) 0 (signal 'arith-error nil)))) | |
| 383 | |
| 384 (defun cl-expt (x y) | |
| 385 "Return X raised to the power of Y. Works only for integer arguments." | |
| 386 (if (<= y 0) (if (= y 0) 1 (if (memq x '(-1 1)) x 0)) | |
| 387 (* (if (= (% y 2) 0) 1 x) (cl-expt (* x x) (/ y 2))))) | |
| 388 (or (and (fboundp 'expt) (subrp (symbol-function 'expt))) | |
| 389 (defalias 'expt 'cl-expt)) | |
| 390 | |
| 391 (defun floor* (x &optional y) | |
| 392 "Return a list of the floor of X and the fractional part of X. | |
| 393 With two arguments, return floor and remainder of their quotient." | |
| 394 (let ((q (floor x y))) | |
| 395 (list q (- x (if y (* y q) q))))) | |
| 396 | |
| 397 (defun ceiling* (x &optional y) | |
| 398 "Return a list of the ceiling of X and the fractional part of X. | |
| 399 With two arguments, return ceiling and remainder of their quotient." | |
| 400 (let ((res (floor* x y))) | |
| 401 (if (= (car (cdr res)) 0) res | |
| 402 (list (1+ (car res)) (- (car (cdr res)) (or y 1)))))) | |
| 403 | |
| 404 (defun truncate* (x &optional y) | |
| 405 "Return a list of the integer part of X and the fractional part of X. | |
| 406 With two arguments, return truncation and remainder of their quotient." | |
| 407 (if (eq (>= x 0) (or (null y) (>= y 0))) | |
| 408 (floor* x y) (ceiling* x y))) | |
| 409 | |
| 410 (defun round* (x &optional y) | |
| 411 "Return a list of X rounded to the nearest integer and the remainder. | |
| 412 With two arguments, return rounding and remainder of their quotient." | |
| 413 (if y | |
| 414 (if (and (integerp x) (integerp y)) | |
| 415 (let* ((hy (/ y 2)) | |
| 416 (res (floor* (+ x hy) y))) | |
| 417 (if (and (= (car (cdr res)) 0) | |
| 418 (= (+ hy hy) y) | |
| 419 (/= (% (car res) 2) 0)) | |
| 420 (list (1- (car res)) hy) | |
| 421 (list (car res) (- (car (cdr res)) hy)))) | |
| 422 (let ((q (round (/ x y)))) | |
| 423 (list q (- x (* q y))))) | |
| 424 (if (integerp x) (list x 0) | |
| 425 (let ((q (round x))) | |
| 426 (list q (- x q)))))) | |
| 427 | |
| 428 (defun mod* (x y) | |
| 429 "The remainder of X divided by Y, with the same sign as Y." | |
| 430 (nth 1 (floor* x y))) | |
| 431 | |
| 432 (defun rem* (x y) | |
| 433 "The remainder of X divided by Y, with the same sign as X." | |
| 434 (nth 1 (truncate* x y))) | |
| 435 | |
| 436 (defun signum (a) | |
| 437 "Return 1 if A is positive, -1 if negative, 0 if zero." | |
| 438 (cond ((> a 0) 1) ((< a 0) -1) (t 0))) | |
| 439 | |
| 440 | |
| 441 ;; Random numbers. | |
| 442 | |
| 443 (defvar *random-state*) | |
| 444 (defun random* (lim &optional state) | |
| 445 "Return a random nonnegative number less than LIM, an integer or float. | |
| 446 Optional second arg STATE is a random-state object." | |
| 447 (or state (setq state *random-state*)) | |
| 448 ;; Inspired by "ran3" from Numerical Recipes. Additive congruential method. | |
| 449 (let ((vec (aref state 3))) | |
| 450 (if (integerp vec) | |
| 451 (let ((i 0) (j (- 1357335 (% (abs vec) 1357333))) (k 1) ii) | |
| 452 (aset state 3 (setq vec (make-vector 55 nil))) | |
| 453 (aset vec 0 j) | |
| 454 (while (> (setq i (% (+ i 21) 55)) 0) | |
| 455 (aset vec i (setq j (prog1 k (setq k (- j k)))))) | |
| 456 (while (< (setq i (1+ i)) 200) (random* 2 state)))) | |
| 457 (let* ((i (aset state 1 (% (1+ (aref state 1)) 55))) | |
| 458 (j (aset state 2 (% (1+ (aref state 2)) 55))) | |
| 459 (n (logand 8388607 (aset vec i (- (aref vec i) (aref vec j)))))) | |
| 460 (if (integerp lim) | |
| 461 (if (<= lim 512) (% n lim) | |
| 462 (if (> lim 8388607) (setq n (+ (lsh n 9) (random* 512 state)))) | |
| 463 (let ((mask 1023)) | |
| 464 (while (< mask (1- lim)) (setq mask (1+ (+ mask mask)))) | |
| 465 (if (< (setq n (logand n mask)) lim) n (random* lim state)))) | |
| 466 (* (/ n '8388608e0) lim))))) | |
| 467 | |
| 468 (defun make-random-state (&optional state) | |
| 469 "Return a copy of random-state STATE, or of `*random-state*' if omitted. | |
| 470 If STATE is t, return a new state object seeded from the time of day." | |
| 471 (cond ((null state) (make-random-state *random-state*)) | |
| 472 ((vectorp state) (cl-copy-tree state t)) | |
| 473 ((integerp state) (vector 'cl-random-state-tag -1 30 state)) | |
| 474 (t (make-random-state (cl-random-time))))) | |
| 475 | |
| 476 (defun random-state-p (object) | |
| 477 "Return t if OBJECT is a random-state object." | |
| 478 (and (vectorp object) (= (length object) 4) | |
| 479 (eq (aref object 0) 'cl-random-state-tag))) | |
| 480 | |
| 481 | |
| 482 ;; Implementation limits. | |
| 483 | |
| 484 (defun cl-finite-do (func a b) | |
| 485 (condition-case err | |
| 486 (let ((res (funcall func a b))) ; check for IEEE infinity | |
| 487 (and (numberp res) (/= res (/ res 2)) res)) | |
| 488 (arith-error nil))) | |
| 489 | |
| 490 (defvar most-positive-float) | |
| 491 (defvar most-negative-float) | |
| 492 (defvar least-positive-float) | |
| 493 (defvar least-negative-float) | |
| 494 (defvar least-positive-normalized-float) | |
| 495 (defvar least-negative-normalized-float) | |
| 496 (defvar float-epsilon) | |
| 497 (defvar float-negative-epsilon) | |
| 498 | |
| 499 (defun cl-float-limits () | |
| 500 (or most-positive-float (not (numberp '2e1)) | |
| 501 (let ((x '2e0) y z) | |
| 502 ;; Find maximum exponent (first two loops are optimizations) | |
| 503 (while (cl-finite-do '* x x) (setq x (* x x))) | |
| 504 (while (cl-finite-do '* x (/ x 2)) (setq x (* x (/ x 2)))) | |
| 505 (while (cl-finite-do '+ x x) (setq x (+ x x))) | |
| 506 (setq z x y (/ x 2)) | |
| 507 ;; Now fill in 1's in the mantissa. | |
| 508 (while (and (cl-finite-do '+ x y) (/= (+ x y) x)) | |
| 509 (setq x (+ x y) y (/ y 2))) | |
| 510 (setq most-positive-float x | |
| 511 most-negative-float (- x)) | |
| 512 ;; Divide down until mantissa starts rounding. | |
| 513 (setq x (/ x z) y (/ 16 z) x (* x y)) | |
| 514 (while (condition-case err (and (= x (* (/ x 2) 2)) (> (/ y 2) 0)) | |
| 515 (arith-error nil)) | |
| 516 (setq x (/ x 2) y (/ y 2))) | |
| 517 (setq least-positive-normalized-float y | |
| 518 least-negative-normalized-float (- y)) | |
| 519 ;; Divide down until value underflows to zero. | |
| 520 (setq x (/ 1 z) y x) | |
| 521 (while (condition-case err (> (/ x 2) 0) (arith-error nil)) | |
| 522 (setq x (/ x 2))) | |
| 523 (setq least-positive-float x | |
| 524 least-negative-float (- x)) | |
| 525 (setq x '1e0) | |
| 526 (while (/= (+ '1e0 x) '1e0) (setq x (/ x 2))) | |
| 527 (setq float-epsilon (* x 2)) | |
| 528 (setq x '1e0) | |
| 529 (while (/= (- '1e0 x) '1e0) (setq x (/ x 2))) | |
| 530 (setq float-negative-epsilon (* x 2)))) | |
| 531 nil) | |
| 532 | |
| 533 | |
| 534 ;;; Sequence functions. | |
| 535 | |
| 536 ;XEmacs -- our built-in is more powerful. | |
| 537 ;(defun subseq (seq start &optional end) | |
| 538 ; "Return the subsequence of SEQ from START to END. | |
| 539 ;If END is omitted, it defaults to the length of the sequence. | |
| 540 ;If START or END is negative, it counts from the end." | |
| 541 ; (if (stringp seq) (substring seq start end) | |
| 542 ; (let (len) | |
| 543 ; (and end (< end 0) (setq end (+ end (setq len (length seq))))) | |
| 544 ; (if (< start 0) (setq start (+ start (or len (setq len (length seq)))))) | |
| 545 ; (cond ((listp seq) | |
| 546 ; (if (> start 0) (setq seq (nthcdr start seq))) | |
| 547 ; (if end | |
| 548 ; (let ((res nil)) | |
| 549 ; (while (>= (setq end (1- end)) start) | |
| 550 ; (cl-push (cl-pop seq) res)) | |
| 551 ; (nreverse res)) | |
| 552 ; (copy-sequence seq))) | |
| 553 ; (t | |
| 554 ; (or end (setq end (or len (length seq)))) | |
| 555 ; (let ((res (make-vector (max (- end start) 0) nil)) | |
| 556 ; (i 0)) | |
| 557 ; (while (< start end) | |
| 558 ; (aset res i (aref seq start)) | |
| 559 ; (setq i (1+ i) start (1+ start))) | |
| 560 ; res)))))) | |
| 561 | |
| 562 (defun concatenate (type &rest seqs) | |
| 563 "Concatenate, into a sequence of type TYPE, the argument SEQUENCES." | |
| 564 (cond ((eq type 'vector) (apply 'vconcat seqs)) | |
| 565 ((eq type 'string) (apply 'concat seqs)) | |
| 566 ((eq type 'list) (apply 'append (append seqs '(nil)))) | |
| 567 (t (error "Not a sequence type name: %s" type)))) | |
| 568 | |
| 569 | |
| 570 ;;; List functions. | |
| 571 | |
| 572 (defun revappend (x y) | |
| 573 "Equivalent to (append (reverse X) Y)." | |
| 574 (nconc (reverse x) y)) | |
| 575 | |
| 576 (defun nreconc (x y) | |
| 577 "Equivalent to (nconc (nreverse X) Y)." | |
| 578 (nconc (nreverse x) y)) | |
| 579 | |
| 580 (defun list-length (x) | |
| 581 "Return the length of a list. Return nil if list is circular." | |
| 582 (let ((n 0) (fast x) (slow x)) | |
| 583 (while (and (cdr fast) (not (and (eq fast slow) (> n 0)))) | |
| 584 (setq n (+ n 2) fast (cdr (cdr fast)) slow (cdr slow))) | |
| 585 (if fast (if (cdr fast) nil (1+ n)) n))) | |
| 586 | |
| 587 (defun tailp (sublist list) | |
| 588 "Return true if SUBLIST is a tail of LIST." | |
| 589 (while (and (consp list) (not (eq sublist list))) | |
| 590 (setq list (cdr list))) | |
| 591 (if (numberp sublist) (equal sublist list) (eq sublist list))) | |
| 592 | |
| 593 (defun cl-copy-tree (tree &optional vecp) | |
| 594 "Make a copy of TREE. | |
| 595 If TREE is a cons cell, this recursively copies both its car and its cdr. | |
| 596 Constrast to copy-sequence, which copies only along the cdrs. With second | |
| 597 argument VECP, this copies vectors as well as conses." | |
| 598 (if (consp tree) | |
| 599 (let ((p (setq tree (copy-list tree)))) | |
| 600 (while (consp p) | |
| 601 (if (or (consp (car p)) (and vecp (vectorp (car p)))) | |
| 602 (setcar p (cl-copy-tree (car p) vecp))) | |
| 603 (or (listp (cdr p)) (setcdr p (cl-copy-tree (cdr p) vecp))) | |
| 604 (cl-pop p))) | |
| 605 (if (and vecp (vectorp tree)) | |
| 606 (let ((i (length (setq tree (copy-sequence tree))))) | |
| 607 (while (>= (setq i (1- i)) 0) | |
| 608 (aset tree i (cl-copy-tree (aref tree i) vecp)))))) | |
| 609 tree) | |
| 610 (or (and (fboundp 'copy-tree) (subrp (symbol-function 'copy-tree))) | |
| 611 (defalias 'copy-tree 'cl-copy-tree)) | |
| 612 | |
| 613 | |
| 614 ;;; Property lists. | |
| 615 | |
| 616 (defun get* (sym tag &optional def) ; See compiler macro in cl-macs.el | |
| 617 "Return the value of SYMBOL's PROPNAME property, or DEFAULT if none." | |
| 618 (or (get sym tag) | |
| 619 (and def | |
| 620 (let ((plist (symbol-plist sym))) | |
| 621 (while (and plist (not (eq (car plist) tag))) | |
| 622 (setq plist (cdr (cdr plist)))) | |
| 623 (if plist (car (cdr plist)) def))))) | |
| 624 | |
| 625 (defun getf (plist tag &optional def) | |
| 626 "Search PROPLIST for property PROPNAME; return its value or DEFAULT. | |
| 627 PROPLIST is a list of the sort returned by `symbol-plist'." | |
| 628 (setplist '--cl-getf-symbol-- plist) | |
| 629 (or (get '--cl-getf-symbol-- tag) | |
| 630 (and def (get* '--cl-getf-symbol-- tag def)))) | |
| 631 | |
| 632 (defun cl-set-getf (plist tag val) | |
| 633 (let ((p plist)) | |
| 634 (while (and p (not (eq (car p) tag))) (setq p (cdr (cdr p)))) | |
| 635 (if p (progn (setcar (cdr p) val) plist) (list* tag val plist)))) | |
| 636 | |
| 637 (defun cl-do-remf (plist tag) | |
| 638 (let ((p (cdr plist))) | |
| 639 (while (and (cdr p) (not (eq (car (cdr p)) tag))) (setq p (cdr (cdr p)))) | |
| 640 (and (cdr p) (progn (setcdr p (cdr (cdr (cdr p)))) t)))) | |
| 641 | |
| 642 (defun cl-remprop (sym tag) | |
| 643 "Remove from SYMBOL's plist the property PROP and its value." | |
| 644 (let ((plist (symbol-plist sym))) | |
| 645 (if (and plist (eq tag (car plist))) | |
| 646 (progn (setplist sym (cdr (cdr plist))) t) | |
| 647 (cl-do-remf plist tag)))) | |
| 648 (or (and (fboundp 'remprop) (subrp (symbol-function 'remprop))) | |
| 649 (defalias 'remprop 'cl-remprop)) | |
| 650 | |
| 651 | |
| 652 | |
| 653 ;;; Hash tables. | |
| 654 | |
| 655 (defun make-hash-table (&rest cl-keys) | |
| 656 "Make an empty Common Lisp-style hash-table. | |
| 657 If :test is `eq', `eql', or `equal', this can use XEmacs built-in hash-tables. | |
| 658 In XEmacs, or with a different test, this internally uses a-lists. | |
| 659 Keywords supported: :test :size | |
| 660 The Common Lisp keywords :rehash-size and :rehash-threshold are ignored." | |
| 661 (let ((cl-test (or (car (cdr (memq ':test cl-keys))) 'eql)) | |
| 662 (cl-size (or (car (cdr (memq ':size cl-keys))) 20))) | |
| 663 (if (and (memq cl-test '(eq eql equal)) (fboundp 'make-hashtable)) | |
| 664 (funcall 'make-hashtable cl-size cl-test) | |
| 665 (list 'cl-hash-table-tag cl-test | |
| 666 (if (> cl-size 1) (make-vector cl-size 0) | |
| 667 (let ((sym (make-symbol "--hashsym--"))) (set sym nil) sym)) | |
| 668 0)))) | |
| 669 | |
| 670 (defvar cl-lucid-hash-tag | |
| 671 (if (and (fboundp 'make-hashtable) (vectorp (make-hashtable 1))) | |
| 672 (aref (make-hashtable 1) 0) (make-symbol "--cl-hash-tag--"))) | |
| 673 | |
| 674 (defun hash-table-p (x) | |
| 675 "Return t if OBJECT is a hash table." | |
| 676 (or (eq (car-safe x) 'cl-hash-table-tag) | |
| 677 (and (vectorp x) (= (length x) 4) (eq (aref x 0) cl-lucid-hash-tag)) | |
| 678 (and (fboundp 'hashtablep) (funcall 'hashtablep x)))) | |
| 679 | |
| 680 (defun cl-not-hash-table (x &optional y &rest z) | |
| 681 (signal 'wrong-type-argument (list 'hash-table-p (or y x)))) | |
| 682 | |
| 683 (defun cl-hash-lookup (key table) | |
| 684 (or (eq (car-safe table) 'cl-hash-table-tag) (cl-not-hash-table table)) | |
| 685 (let* ((array (nth 2 table)) (test (car (cdr table))) (str key) sym) | |
| 686 (if (symbolp array) (setq str nil sym (symbol-value array)) | |
| 687 (while (or (consp str) (and (vectorp str) (> (length str) 0))) | |
| 688 (setq str (elt str 0))) | |
| 689 (cond ((stringp str) (if (eq test 'equalp) (setq str (downcase str)))) | |
| 690 ((symbolp str) (setq str (symbol-name str))) | |
| 691 ((and (numberp str) (> str -8000000) (< str 8000000)) | |
| 692 (or (integerp str) (setq str (truncate str))) | |
| 693 (setq str (aref ["0" "1" "2" "3" "4" "5" "6" "7" "8" "9" "10" | |
| 694 "11" "12" "13" "14" "15"] (logand str 15)))) | |
| 695 (t (setq str "*"))) | |
| 696 (setq sym (symbol-value (intern-soft str array)))) | |
| 697 (list (and sym (cond ((or (eq test 'eq) | |
| 698 (and (eq test 'eql) (not (numberp key)))) | |
| 699 (assq key sym)) | |
| 700 ((memq test '(eql equal)) (assoc key sym)) | |
| 701 (t (assoc* key sym ':test test)))) | |
| 702 sym str))) | |
| 703 | |
| 704 (defvar cl-builtin-gethash | |
| 705 (if (and (fboundp 'gethash) (subrp (symbol-function 'gethash))) | |
| 706 (symbol-function 'gethash) 'cl-not-hash-table)) | |
| 707 (defvar cl-builtin-remhash | |
| 708 (if (and (fboundp 'remhash) (subrp (symbol-function 'remhash))) | |
| 709 (symbol-function 'remhash) 'cl-not-hash-table)) | |
| 710 (defvar cl-builtin-clrhash | |
| 711 (if (and (fboundp 'clrhash) (subrp (symbol-function 'clrhash))) | |
| 712 (symbol-function 'clrhash) 'cl-not-hash-table)) | |
| 713 (defvar cl-builtin-maphash | |
| 714 (if (and (fboundp 'maphash) (subrp (symbol-function 'maphash))) | |
| 715 (symbol-function 'maphash) 'cl-not-hash-table)) | |
| 716 | |
| 717 (defun cl-gethash (key table &optional def) | |
| 718 "Look up KEY in HASH-TABLE; return corresponding value, or DEFAULT." | |
| 719 (if (consp table) | |
| 720 (let ((found (cl-hash-lookup key table))) | |
| 721 (if (car found) (cdr (car found)) def)) | |
| 722 (funcall cl-builtin-gethash key table def))) | |
| 723 (defalias 'gethash 'cl-gethash) | |
| 724 | |
| 725 (defun cl-puthash (key val table) | |
| 726 (if (consp table) | |
| 727 (let ((found (cl-hash-lookup key table))) | |
| 728 (if (car found) (setcdr (car found) val) | |
| 729 (if (nth 2 found) | |
| 730 (progn | |
| 731 (if (> (nth 3 table) (* (length (nth 2 table)) 3)) | |
| 732 (let ((new-table (make-vector (nth 3 table) 0))) | |
| 733 (mapatoms (function | |
| 734 (lambda (sym) | |
| 735 (set (intern (symbol-name sym) new-table) | |
| 736 (symbol-value sym)))) | |
| 737 (nth 2 table)) | |
| 738 (setcar (cdr (cdr table)) new-table))) | |
| 739 (set (intern (nth 2 found) (nth 2 table)) | |
| 740 (cons (cons key val) (nth 1 found)))) | |
| 741 (set (nth 2 table) (cons (cons key val) (nth 1 found)))) | |
| 742 (setcar (cdr (cdr (cdr table))) (1+ (nth 3 table))))) | |
| 743 (funcall 'puthash key val table)) val) | |
| 744 | |
| 745 (defun cl-remhash (key table) | |
| 746 "Remove KEY from HASH-TABLE." | |
| 747 (if (consp table) | |
| 748 (let ((found (cl-hash-lookup key table))) | |
| 749 (and (car found) | |
| 750 (let ((del (delq (car found) (nth 1 found)))) | |
| 751 (setcar (cdr (cdr (cdr table))) (1- (nth 3 table))) | |
| 752 (if (nth 2 found) (set (intern (nth 2 found) (nth 2 table)) del) | |
| 753 (set (nth 2 table) del)) t))) | |
| 754 (prog1 (not (eq (funcall cl-builtin-gethash key table '--cl--) '--cl--)) | |
| 755 (funcall cl-builtin-remhash key table)))) | |
| 756 (defalias 'remhash 'cl-remhash) | |
| 757 | |
| 758 (defun cl-clrhash (table) | |
| 759 "Clear HASH-TABLE." | |
| 760 (if (consp table) | |
| 761 (progn | |
| 762 (or (hash-table-p table) (cl-not-hash-table table)) | |
| 763 (if (symbolp (nth 2 table)) (set (nth 2 table) nil) | |
| 764 (setcar (cdr (cdr table)) (make-vector (length (nth 2 table)) 0))) | |
| 765 (setcar (cdr (cdr (cdr table))) 0)) | |
| 766 (funcall cl-builtin-clrhash table)) | |
| 767 nil) | |
| 768 (defalias 'clrhash 'cl-clrhash) | |
| 769 | |
| 770 (defun cl-maphash (cl-func cl-table) | |
| 771 "Call FUNCTION on keys and values from HASH-TABLE." | |
| 772 (or (hash-table-p cl-table) (cl-not-hash-table cl-table)) | |
| 773 (if (consp cl-table) | |
| 774 (mapatoms (function (lambda (cl-x) | |
| 775 (setq cl-x (symbol-value cl-x)) | |
| 776 (while cl-x | |
| 777 (funcall cl-func (car (car cl-x)) | |
| 778 (cdr (car cl-x))) | |
| 779 (setq cl-x (cdr cl-x))))) | |
| 780 (if (symbolp (nth 2 cl-table)) | |
| 781 (vector (nth 2 cl-table)) (nth 2 cl-table))) | |
| 782 (funcall cl-builtin-maphash cl-func cl-table))) | |
| 783 (defalias 'maphash 'cl-maphash) | |
| 784 | |
| 785 (defun hash-table-count (table) | |
| 786 "Return the number of entries in HASH-TABLE." | |
| 787 (or (hash-table-p table) (cl-not-hash-table table)) | |
| 788 (if (consp table) (nth 3 table) (funcall 'hashtable-fullness table))) | |
| 789 | |
| 790 | |
| 791 ;;; Some debugging aids. | |
| 792 | |
| 793 (defun cl-prettyprint (form) | |
| 794 "Insert a pretty-printed rendition of a Lisp FORM in current buffer." | |
| 795 (let ((pt (point)) last) | |
| 796 (insert "\n" (prin1-to-string form) "\n") | |
| 797 (setq last (point)) | |
| 798 (goto-char (1+ pt)) | |
| 799 (while (search-forward "(quote " last t) | |
| 800 (delete-backward-char 7) | |
| 801 (insert "'") | |
| 802 (forward-sexp) | |
| 803 (delete-char 1)) | |
| 804 (goto-char (1+ pt)) | |
| 805 (cl-do-prettyprint))) | |
| 806 | |
| 807 (defun cl-do-prettyprint () | |
| 808 (skip-chars-forward " ") | |
| 809 (if (looking-at "(") | |
| 810 (let ((skip (or (looking-at "((") (looking-at "(prog") | |
| 811 (looking-at "(unwind-protect ") | |
| 812 (looking-at "(function (") | |
| 813 (looking-at "(cl-block-wrapper "))) | |
| 814 (two (or (looking-at "(defun ") (looking-at "(defmacro "))) | |
| 815 (let (or (looking-at "(let\\*? ") (looking-at "(while "))) | |
| 816 (set (looking-at "(p?set[qf] "))) | |
| 817 (if (or skip let | |
| 818 (progn | |
| 819 (forward-sexp) | |
| 820 (and (>= (current-column) 78) (progn (backward-sexp) t)))) | |
| 821 (let ((nl t)) | |
| 822 (forward-char 1) | |
| 823 (cl-do-prettyprint) | |
| 824 (or skip (looking-at ")") (cl-do-prettyprint)) | |
| 825 (or (not two) (looking-at ")") (cl-do-prettyprint)) | |
| 826 (while (not (looking-at ")")) | |
| 827 (if set (setq nl (not nl))) | |
| 828 (if nl (insert "\n")) | |
| 829 (lisp-indent-line) | |
| 830 (cl-do-prettyprint)) | |
| 831 (forward-char 1)))) | |
| 832 (forward-sexp))) | |
| 833 | |
| 834 (defvar cl-macroexpand-cmacs nil) | |
| 835 (defvar cl-closure-vars nil) | |
| 836 | |
| 837 (defun cl-macroexpand-all (form &optional env) | |
| 838 "Expand all macro calls through a Lisp FORM. | |
| 839 This also does some trivial optimizations to make the form prettier." | |
| 840 (while (or (not (eq form (setq form (macroexpand form env)))) | |
| 841 (and cl-macroexpand-cmacs | |
| 842 (not (eq form (setq form (compiler-macroexpand form))))))) | |
| 843 (cond ((not (consp form)) form) | |
| 844 ((memq (car form) '(let let*)) | |
| 845 (if (null (nth 1 form)) | |
| 846 (cl-macroexpand-all (cons 'progn (cddr form)) env) | |
| 847 (let ((letf nil) (res nil) (lets (cadr form))) | |
| 848 (while lets | |
| 849 (cl-push (if (consp (car lets)) | |
| 850 (let ((exp (cl-macroexpand-all (caar lets) env))) | |
| 851 (or (symbolp exp) (setq letf t)) | |
| 852 (cons exp (cl-macroexpand-body (cdar lets) env))) | |
| 853 (let ((exp (cl-macroexpand-all (car lets) env))) | |
| 854 (if (symbolp exp) exp | |
| 855 (setq letf t) (list exp nil)))) res) | |
| 856 (setq lets (cdr lets))) | |
| 857 (list* (if letf (if (eq (car form) 'let) 'letf 'letf*) (car form)) | |
| 858 (nreverse res) (cl-macroexpand-body (cddr form) env))))) | |
| 859 ((eq (car form) 'cond) | |
| 860 (cons (car form) | |
| 861 (mapcar (function (lambda (x) (cl-macroexpand-body x env))) | |
| 862 (cdr form)))) | |
| 863 ((eq (car form) 'condition-case) | |
| 864 (list* (car form) (nth 1 form) (cl-macroexpand-all (nth 2 form) env) | |
| 865 (mapcar (function | |
| 866 (lambda (x) | |
| 867 (cons (car x) (cl-macroexpand-body (cdr x) env)))) | |
| 868 (cdddr form)))) | |
| 869 ((memq (car form) '(quote function)) | |
| 870 (if (eq (car-safe (nth 1 form)) 'lambda) | |
| 871 (let ((body (cl-macroexpand-body (cddadr form) env))) | |
| 872 (if (and cl-closure-vars (eq (car form) 'function) | |
| 873 (cl-expr-contains-any body cl-closure-vars)) | |
| 874 (let* ((new (mapcar 'gensym cl-closure-vars)) | |
| 875 (sub (pairlis cl-closure-vars new)) (decls nil)) | |
| 876 (while (or (stringp (car body)) | |
| 877 (eq (car-safe (car body)) 'interactive)) | |
| 878 (cl-push (list 'quote (cl-pop body)) decls)) | |
| 879 (put (car (last cl-closure-vars)) 'used t) | |
| 880 (append | |
| 881 (list 'list '(quote lambda) '(quote (&rest --cl-rest--))) | |
| 882 (sublis sub (nreverse decls)) | |
| 883 (list | |
| 884 (list* 'list '(quote apply) | |
| 885 (list 'list '(quote quote) | |
| 886 (list 'function | |
| 887 (list* 'lambda | |
| 888 (append new (cadadr form)) | |
| 889 (sublis sub body)))) | |
| 890 (nconc (mapcar (function | |
| 891 (lambda (x) | |
| 892 (list 'list '(quote quote) x))) | |
| 893 cl-closure-vars) | |
| 894 '((quote --cl-rest--))))))) | |
| 895 (list (car form) (list* 'lambda (cadadr form) body)))) | |
| 896 form)) | |
| 897 ((memq (car form) '(defun defmacro)) | |
| 898 (list* (car form) (nth 1 form) (cl-macroexpand-body (cddr form) env))) | |
| 899 ((and (eq (car form) 'progn) (not (cddr form))) | |
| 900 (cl-macroexpand-all (nth 1 form) env)) | |
| 901 ((eq (car form) 'setq) | |
| 902 (let* ((args (cl-macroexpand-body (cdr form) env)) (p args)) | |
| 903 (while (and p (symbolp (car p))) (setq p (cddr p))) | |
| 904 (if p (cl-macroexpand-all (cons 'setf args)) (cons 'setq args)))) | |
| 905 (t (cons (car form) (cl-macroexpand-body (cdr form) env))))) | |
| 906 | |
| 907 (defun cl-macroexpand-body (body &optional env) | |
| 908 (mapcar (function (lambda (x) (cl-macroexpand-all x env))) body)) | |
| 909 | |
| 910 (defun cl-prettyexpand (form &optional full) | |
| 911 (message "Expanding...") | |
| 912 (let ((cl-macroexpand-cmacs full) (cl-compiling-file full) | |
| 913 (byte-compile-macro-environment nil)) | |
| 914 (setq form (cl-macroexpand-all form | |
| 915 (and (not full) '((block) (eval-when))))) | |
| 916 (message "Formatting...") | |
| 917 (prog1 (cl-prettyprint form) | |
| 918 (message "")))) | |
| 919 | |
| 920 | |
| 921 | |
| 922 (run-hooks 'cl-extra-load-hook) | |
| 923 | |
| 924 ;;; cl-extra.el ends here |