Mercurial > hg > xemacs-beta
annotate lisp/cl.el @ 5462:97ac18bd1fa3
Make sure distinct symbol macros with identical names expand distinctly.
lisp/ChangeLog addition:
2011-04-24 Aidan Kehoe <kehoea@parhasard.net>
* cl-macs.el (symbol-macrolet):
* cl-macs.el (lexical-let):
* cl.el:
* cl.el (cl-macroexpand):
Distinct symbol macros with identical string names should
nonetheless expand to different things; implement this, storing
the symbol's eq-hash in the macro environment, rather than its
string name.
tests/ChangeLog addition:
2011-04-24 Aidan Kehoe <kehoea@parhasard.net>
* automated/lisp-tests.el:
Check that distinct symbol macros with identical string names
expand to different things.
| author | Aidan Kehoe <kehoea@parhasard.net> |
|---|---|
| date | Sun, 24 Apr 2011 09:52:45 +0100 |
| parents | 25c10648ffba |
| children | f2881cb841b4 |
| rev | line source |
|---|---|
| 613 | 1 ;;; cl.el --- Common Lisp extensions for XEmacs Lisp |
| 428 | 2 |
| 3 ;; Copyright (C) 1993, 1997 Free Software Foundation, Inc. | |
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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-optimize-speed 1) | |
| 103 (defvar cl-optimize-safety 1) | |
| 104 | |
| 105 (defvar custom-print-functions nil | |
| 106 "This is a list of functions that format user objects for printing. | |
| 107 Each function is called in turn with three arguments: the object, the | |
| 108 stream, and the print level (currently ignored). If it is able to | |
| 109 print the object it returns true; otherwise it returns nil and the | |
| 110 printer proceeds to the next function on the list. | |
| 111 | |
| 112 This variable is not used at present, but it is defined in hopes that | |
| 113 a future Emacs interpreter will be able to use it.") | |
| 114 | |
| 115 ;;; Predicates. | |
| 116 | |
| 117 (defun eql (a b) ; See compiler macro in cl-macs.el | |
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118 "Return t if the arguments are the same Lisp object, or numerically equal. |
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119 |
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120 They must be of the same type; the difference between `eq' and `eql' is most |
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121 relevant when it comes to the non-fixnum number types. In this |
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122 implementation, fixnums of the same numeric value are always `eq', but this |
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123 is not true for other numeric types, among them floats, bignums and ratios, |
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124 if available. |
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125 |
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126 See also `=' (which doesn't require that its arguments be of the same type, |
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127 but only accepts numeric arguments, characters and markers) and `equal'." |
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128 (or (eq a b) (and (numberp a) (equal a b)))) |
| 428 | 129 |
| 130 ;;; Generalized variables. These macros are defined here so that they | |
| 131 ;;; can safely be used in .emacs files. | |
| 132 | |
| 133 (defmacro incf (place &optional x) | |
| 3343 | 134 "Increment PLACE by X (1 by default). |
| 428 | 135 PLACE may be a symbol, or any generalized variable allowed by `setf'. |
| 136 The return value is the incremented value of PLACE." | |
| 137 (if (symbolp place) | |
| 138 (list 'setq place (if x (list '+ place x) (list '1+ place))) | |
| 139 ;; XEmacs byte-compiler optimizes (+ FOO 1) to (1+ FOO), so this | |
| 140 ;; is OK. | |
| 141 (list 'callf '+ place (or x 1)))) | |
| 142 | |
| 143 (defmacro decf (place &optional x) | |
| 3343 | 144 "Decrement PLACE by X (1 by default). |
| 428 | 145 PLACE may be a symbol, or any generalized variable allowed by `setf'. |
| 146 The return value is the decremented value of PLACE." | |
| 147 (if (symbolp place) | |
| 148 (list 'setq place (if x (list '- place x) (list '1- place))) | |
| 149 (list 'callf '- place (or x 1)))) | |
| 150 | |
| 151 (defmacro pop (place) | |
| 3343 | 152 "Remove and return the head of the list stored in PLACE. |
| 428 | 153 Analogous to (prog1 (car PLACE) (setf PLACE (cdr PLACE))), though more |
| 154 careful about evaluating each argument only once and in the right order. | |
| 155 PLACE may be a symbol, or any generalized variable allowed by `setf'." | |
| 156 (if (symbolp place) | |
| 157 `(car (prog1 ,place (setq ,place (cdr ,place)))) | |
| 158 (cl-do-pop place))) | |
| 159 | |
| 3343 | 160 (defmacro push (newelt listname) |
| 3355 | 161 "Add NEWELT at the beginning of the list stored in LISTNAME. |
| 162 Analogous to (setf LISTNAME (cons NEWELT LISTNAME)), though more careful | |
| 163 about evaluating each argument only once and in the right order. LISTNAME | |
| 164 may be a symbol, or any generalized variable allowed by `setf'; that is, it | |
| 165 does not necessarily have to be a list, though `push' is most often used on | |
| 166 lists. " | |
| 3343 | 167 (if (symbolp listname) `(setq ,listname (cons ,newelt ,listname)) |
| 168 (list 'callf2 'cons newelt listname))) | |
| 428 | 169 |
| 3343 | 170 (defmacro pushnew (newelt listname &rest keys) |
| 3355 | 171 "Add NEWELT at the beginning of LISTNAME, unless it's already in LISTNAME. |
| 3343 | 172 Like (push NEWELT LISTNAME), except that the list is unmodified if NEWELT is |
| 173 `eql' to an element already on the list. | |
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174 Keywords supported: :test :test-not :key |
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175 See `member*' for the meaning of :test, :test-not and :key." |
| 3343 | 176 (if (symbolp listname) (list 'setq listname |
| 177 (list* 'adjoin newelt listname keys)) | |
| 178 (list* 'callf2 'adjoin newelt listname keys))) | |
| 428 | 179 |
| 180 (defun cl-set-elt (seq n val) | |
| 181 (if (listp seq) (setcar (nthcdr n seq) val) (aset seq n val))) | |
| 182 | |
| 183 (defun cl-set-nthcdr (n list x) | |
| 184 (if (<= n 0) x (setcdr (nthcdr (1- n) list) x) list)) | |
| 185 | |
| 186 (defun cl-set-buffer-substring (start end val) | |
| 187 (save-excursion (delete-region start end) | |
| 188 (goto-char start) | |
| 189 (insert val) | |
| 190 val)) | |
| 191 | |
| 192 (defun cl-set-substring (str start end val) | |
| 193 (if end (if (< end 0) (incf end (length str))) | |
| 194 (setq end (length str))) | |
| 2136 | 195 (if (< start 0) (incf start (length str))) |
| 428 | 196 (concat (and (> start 0) (substring str 0 start)) |
| 197 val | |
| 198 (and (< end (length str)) (substring str end)))) | |
| 199 | |
| 200 ;;; Control structures. | |
| 201 | |
| 202 ;; The macros `when' and `unless' are so useful that we want them to | |
| 203 ;; ALWAYS be available. So they've been moved from cl.el to eval.c. | |
| 204 ;; Note: FSF Emacs moved them to subr.el in FSF 20. | |
| 205 | |
| 2153 | 206 (defalias 'cl-map-extents 'map-extents) |
| 428 | 207 |
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208 ;;; XEmacs; multiple values are in eval.c and cl-macs.el. |
| 2153 | 209 |
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210 ;;; We no longer support `multiple-value-apply', which was ill-conceived to |
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211 ;;; start with, is not specified by Common Lisp, and which nothing uses, |
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212 ;;; according to Google Code Search, as of Sat Mar 14 23:31:35 GMT 2009. |
| 2153 | 213 |
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214 (make-obsolete 'multiple-value-apply 'multiple-value-call) |
| 428 | 215 |
| 216 ;;; Macros. | |
| 217 | |
| 218 (defvar cl-macro-environment nil) | |
| 219 ;; XEmacs: we renamed the internal function to macroexpand-internal | |
| 220 ;; to avoid doc-file problems. | |
| 221 (defvar cl-old-macroexpand (prog1 (symbol-function 'macroexpand-internal) | |
| 222 (defalias 'macroexpand 'cl-macroexpand))) | |
| 223 | |
| 224 (defun cl-macroexpand (cl-macro &optional cl-env) | |
| 225 "Return result of expanding macros at top level of FORM. | |
| 226 If FORM is not a macro call, it is returned unchanged. | |
| 227 Otherwise, the macro is expanded and the expansion is considered | |
| 228 in place of FORM. When a non-macro-call results, it is returned. | |
| 229 | |
| 442 | 230 The second optional arg ENVIRONMENT specifies an environment of macro |
| 428 | 231 definitions to shadow the loaded ones for use in file byte-compilation." |
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232 (let ((cl-macro-environment |
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233 (if cl-macro-environment (append cl-env cl-macro-environment) cl-env)) |
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234 eq-hash) |
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235 (while (progn (setq cl-macro |
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236 (macroexpand-internal cl-macro cl-macro-environment)) |
| 428 | 237 (and (symbolp cl-macro) |
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238 (setq eq-hash (eq-hash cl-macro)) |
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239 (if (fixnump eq-hash) |
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240 (assq eq-hash cl-macro-environment) |
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241 (assoc eq-hash cl-macro-environment)))) |
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242 (setq cl-macro (cadr (assoc* eq-hash cl-macro-environment)))) |
| 428 | 243 cl-macro)) |
| 244 | |
| 245 ;;; Declarations. | |
| 246 | |
| 247 (defvar cl-compiling-file nil) | |
| 248 (defun cl-compiling-file () | |
| 249 (or cl-compiling-file | |
| 250 ;; XEmacs change | |
| 251 ; (and (boundp 'outbuffer) (bufferp (symbol-value 'outbuffer)) | |
| 252 ; (equal (buffer-name (symbol-value 'outbuffer)) | |
| 253 ; " *Compiler Output*")) | |
| 254 (and (boundp 'byte-compile-outbuffer) | |
| 255 (bufferp (symbol-value 'byte-compile-outbuffer)) | |
| 256 (equal (buffer-name (symbol-value 'byte-compile-outbuffer)) | |
| 257 " *Compiler Output*")) | |
| 258 )) | |
| 259 | |
| 260 (defvar cl-proclaims-deferred nil) | |
| 261 | |
| 262 (defun proclaim (spec) | |
| 263 (if (fboundp 'cl-do-proclaim) (cl-do-proclaim spec t) | |
| 264 (push spec cl-proclaims-deferred)) | |
| 265 nil) | |
| 266 | |
| 267 (defmacro declaim (&rest specs) | |
| 268 (let ((body (mapcar (function (lambda (x) (list 'proclaim (list 'quote x)))) | |
| 269 specs))) | |
| 270 (if (cl-compiling-file) (list* 'eval-when '(compile load eval) body) | |
| 271 (cons 'progn body)))) ; avoid loading cl-macs.el for eval-when | |
| 272 | |
| 273 ;;; Symbols. | |
| 274 | |
| 275 (defun cl-random-time () | |
| 276 (let* ((time (copy-sequence (current-time-string))) (i (length time)) (v 0)) | |
| 277 (while (>= (decf i) 0) (setq v (+ (* v 3) (aref time i)))) | |
| 2509 | 278 (if-fboundp 'coerce-number |
| 279 (coerce-number v 'fixnum) | |
| 1983 | 280 v))) |
| 428 | 281 |
| 282 (defvar *gensym-counter* (* (logand (cl-random-time) 1023) 100)) | |
| 283 | |
| 2153 | 284 ;; XEmacs change: gensym and gentemp moved here from cl-macs.el |
| 442 | 285 (defun gensym (&optional arg) |
| 286 "Generate a new uninterned symbol. | |
| 2071 | 287 The name is made by appending a number to a prefix. If ARG is a string, it |
| 288 is the prefix, otherwise the prefix defaults to \"G\". If ARG is an integer, | |
| 289 the internal counter is reset to that number before creating the name. | |
| 290 There is no way to specify both using this function." | |
| 442 | 291 (let ((prefix (if (stringp arg) arg "G")) |
| 292 (num (if (integerp arg) arg | |
| 293 (prog1 *gensym-counter* | |
| 294 (setq *gensym-counter* (1+ *gensym-counter*)))))) | |
| 295 (make-symbol (format "%s%d" prefix num)))) | |
| 296 | |
| 297 (defun gentemp (&optional arg) | |
| 298 "Generate a new interned symbol with a unique name. | |
| 2071 | 299 The name is made by appending a number to ARG, default \"G\". |
| 300 If ARG is not a string, it is ignored." | |
| 442 | 301 (let ((prefix (if (stringp arg) arg "G")) |
| 302 name) | |
| 303 (while (intern-soft (setq name (format "%s%d" prefix *gensym-counter*))) | |
| 304 (setq *gensym-counter* (1+ *gensym-counter*))) | |
| 305 (intern name))) | |
| 428 | 306 |
| 307 ;;; Numbers. | |
| 308 | |
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309 ;; XEmacs change: ditch floatp-safe. |
| 428 | 310 |
| 446 | 311 (defun plusp (number) |
| 428 | 312 "Return t if NUMBER is positive." |
| 446 | 313 (> number 0)) |
| 314 | |
| 315 (defun minusp (number) | |
| 316 "Return t if NUMBER is negative." | |
| 317 (< number 0)) | |
| 428 | 318 |
| 446 | 319 (defun oddp (integer) |
| 428 | 320 "Return t if INTEGER is odd." |
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321 (eql (logand integer 1) 1)) |
| 428 | 322 |
| 446 | 323 (defun evenp (integer) |
| 428 | 324 "Return t if INTEGER is even." |
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325 (eql (logand integer 1) 0)) |
| 428 | 326 |
| 2153 | 327 ;; XEmacs addition |
| 328 (defalias 'cl-abs 'abs) | |
| 428 | 329 |
| 330 (defvar *random-state* (vector 'cl-random-state-tag -1 30 (cl-random-time))) | |
| 331 | |
| 332 ;;; The following are set by code in cl-extra.el | |
| 333 (defconst most-positive-float nil | |
| 334 "The float closest in value to positive infinity.") | |
| 335 (defconst most-negative-float nil | |
| 336 "The float closest in value to negative infinity.") | |
| 337 (defconst least-positive-float nil | |
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338 "The positive float closest in value to zero.") |
| 428 | 339 (defconst least-negative-float nil |
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340 "The negative float closest in value to zero.") |
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341 (defconst least-positive-normalized-float nil |
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342 "The normalized positive float closest in value to zero. |
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343 |
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344 A float is normalized if the most significant bit of its mantissa is 1. |
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345 Use of denormalized (equivalently, subnormal) floats in calculations will |
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346 lead to gradual underflow, though they can be more accurate in representing |
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347 individual small values. Normal and subnormal floats are as described in |
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348 IEEE 754.") |
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349 |
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350 (defconst least-negative-normalized-float nil |
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351 "The normalized negative float closest in value to zero. |
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352 |
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353 See `least-positive-normalized-float' for details of normal and denormalized |
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354 numbers.") |
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355 |
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356 (defconst float-epsilon nil |
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357 "The smallest float guaranteed not `eql' to 1.0 when added to 1.0. |
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358 |
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359 That is, (eql 1.0 (+ 1.0 X)) will always give nil if (<= float-epsilon X) , |
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360 but it may give t for smaller values.") |
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361 |
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362 (defconst float-negative-epsilon nil |
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363 "The smallest float guaranteed not `eql' to 1.0 when subtracted from 1.0. |
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364 |
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365 That is, (eql 1.0 (- 1.0 X)) will always give nil if (<= |
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366 float-negative-epsilon X) , but it may give t for smaller values.") |
| 428 | 367 |
| 368 ;;; Sequence functions. | |
| 369 | |
| 370 (defalias 'copy-seq 'copy-sequence) | |
| 371 | |
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372 ;; XEmacs; #'mapcar* is in C. |
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373 |
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374 (defalias 'svref 'aref) ;; Compiler macro in cl-macs.el |
| 428 | 375 |
| 376 ;;; List functions. | |
| 377 | |
| 378 ;; These functions are made known to the byte-compiler by cl-macs.el | |
| 379 ;; and turned into efficient car and cdr bytecodes. | |
| 380 | |
| 381 (defalias 'first 'car) | |
| 382 (defalias 'rest 'cdr) | |
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383 |
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384 ;; XEmacs change; this needs to error if handed a non-list. |
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385 (defun endp (list) |
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386 "Return t if LIST is nil, or nil if LIST is a cons. Error otherwise." |
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387 (prog1 |
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388 (null list) |
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389 (and list (atom list) (error 'wrong-type-argument #'listp list)))) |
| 428 | 390 |
| 2153 | 391 ;; XEmacs change: make it a real function |
| 428 | 392 (defun second (x) |
| 393 "Return the second element of the list LIST." | |
| 394 (car (cdr x))) | |
| 395 | |
| 396 (defun third (x) | |
| 2153 | 397 "Return the third element of the list X." |
| 428 | 398 (car (cdr (cdr x)))) |
| 399 | |
| 400 (defun fourth (x) | |
| 2153 | 401 "Return the fourth element of the list X." |
| 428 | 402 (nth 3 x)) |
| 403 | |
| 404 (defun fifth (x) | |
| 2153 | 405 "Return the fifth element of the list X." |
| 428 | 406 (nth 4 x)) |
| 407 | |
| 408 (defun sixth (x) | |
| 2153 | 409 "Return the sixth element of the list X." |
| 428 | 410 (nth 5 x)) |
| 411 | |
| 412 (defun seventh (x) | |
| 2153 | 413 "Return the seventh element of the list X." |
| 428 | 414 (nth 6 x)) |
| 415 | |
| 416 (defun eighth (x) | |
| 2153 | 417 "Return the eighth element of the list X." |
| 428 | 418 (nth 7 x)) |
| 419 | |
| 420 (defun ninth (x) | |
| 2153 | 421 "Return the ninth element of the list X." |
| 428 | 422 (nth 8 x)) |
| 423 | |
| 424 (defun tenth (x) | |
| 2153 | 425 "Return the tenth element of the list X." |
| 428 | 426 (nth 9 x)) |
| 427 | |
| 2153 | 428 ;; XEmacs change: Emacs defines caar, cadr, cdar, and cddr in subr.el. |
| 428 | 429 (defun caar (x) |
| 430 "Return the `car' of the `car' of X." | |
| 431 (car (car x))) | |
| 432 | |
| 433 (defun cadr (x) | |
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434 "Return the `car' of the `cdr' of X. Equivalent to `(second X)'." |
| 428 | 435 (car (cdr x))) |
| 436 | |
| 437 (defun cdar (x) | |
| 438 "Return the `cdr' of the `car' of X." | |
| 439 (cdr (car x))) | |
| 440 | |
| 441 (defun cddr (x) | |
| 442 "Return the `cdr' of the `cdr' of X." | |
| 443 (cdr (cdr x))) | |
| 444 | |
| 445 (defun caaar (x) | |
| 446 "Return the `car' of the `car' of the `car' of X." | |
| 447 (car (car (car x)))) | |
| 448 | |
| 449 (defun caadr (x) | |
| 450 "Return the `car' of the `car' of the `cdr' of X." | |
| 451 (car (car (cdr x)))) | |
| 452 | |
| 453 (defun cadar (x) | |
| 454 "Return the `car' of the `cdr' of the `car' of X." | |
| 455 (car (cdr (car x)))) | |
| 456 | |
| 457 (defun caddr (x) | |
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458 "Return the `car' of the `cdr' of the `cdr' of X. |
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459 Equivalent to `(third X)'." |
| 428 | 460 (car (cdr (cdr x)))) |
| 461 | |
| 462 (defun cdaar (x) | |
| 463 "Return the `cdr' of the `car' of the `car' of X." | |
| 464 (cdr (car (car x)))) | |
| 465 | |
| 466 (defun cdadr (x) | |
| 467 "Return the `cdr' of the `car' of the `cdr' of X." | |
| 468 (cdr (car (cdr x)))) | |
| 469 | |
| 470 (defun cddar (x) | |
| 471 "Return the `cdr' of the `cdr' of the `car' of X." | |
| 472 (cdr (cdr (car x)))) | |
| 473 | |
| 474 (defun cdddr (x) | |
| 475 "Return the `cdr' of the `cdr' of the `cdr' of X." | |
| 476 (cdr (cdr (cdr x)))) | |
| 477 | |
| 478 (defun caaaar (x) | |
| 479 "Return the `car' of the `car' of the `car' of the `car' of X." | |
| 480 (car (car (car (car x))))) | |
| 481 | |
| 482 (defun caaadr (x) | |
| 483 "Return the `car' of the `car' of the `car' of the `cdr' of X." | |
| 484 (car (car (car (cdr x))))) | |
| 485 | |
| 486 (defun caadar (x) | |
| 487 "Return the `car' of the `car' of the `cdr' of the `car' of X." | |
| 488 (car (car (cdr (car x))))) | |
| 489 | |
| 490 (defun caaddr (x) | |
| 491 "Return the `car' of the `car' of the `cdr' of the `cdr' of X." | |
| 492 (car (car (cdr (cdr x))))) | |
| 493 | |
| 494 (defun cadaar (x) | |
| 495 "Return the `car' of the `cdr' of the `car' of the `car' of X." | |
| 496 (car (cdr (car (car x))))) | |
| 497 | |
| 498 (defun cadadr (x) | |
| 499 "Return the `car' of the `cdr' of the `car' of the `cdr' of X." | |
| 500 (car (cdr (car (cdr x))))) | |
| 501 | |
| 502 (defun caddar (x) | |
| 503 "Return the `car' of the `cdr' of the `cdr' of the `car' of X." | |
| 504 (car (cdr (cdr (car x))))) | |
| 505 | |
| 506 (defun cadddr (x) | |
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507 "Return the `car' of the `cdr' of the `cdr' of the `cdr' of X. |
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508 Equivalent to `(fourth X)'." |
| 428 | 509 (car (cdr (cdr (cdr x))))) |
| 510 | |
| 511 (defun cdaaar (x) | |
| 512 "Return the `cdr' of the `car' of the `car' of the `car' of X." | |
| 513 (cdr (car (car (car x))))) | |
| 514 | |
| 515 (defun cdaadr (x) | |
| 516 "Return the `cdr' of the `car' of the `car' of the `cdr' of X." | |
| 517 (cdr (car (car (cdr x))))) | |
| 518 | |
| 519 (defun cdadar (x) | |
| 520 "Return the `cdr' of the `car' of the `cdr' of the `car' of X." | |
| 521 (cdr (car (cdr (car x))))) | |
| 522 | |
| 523 (defun cdaddr (x) | |
| 524 "Return the `cdr' of the `car' of the `cdr' of the `cdr' of X." | |
| 525 (cdr (car (cdr (cdr x))))) | |
| 526 | |
| 527 (defun cddaar (x) | |
| 528 "Return the `cdr' of the `cdr' of the `car' of the `car' of X." | |
| 529 (cdr (cdr (car (car x))))) | |
| 530 | |
| 531 (defun cddadr (x) | |
| 532 "Return the `cdr' of the `cdr' of the `car' of the `cdr' of X." | |
| 533 (cdr (cdr (car (cdr x))))) | |
| 534 | |
| 535 (defun cdddar (x) | |
| 536 "Return the `cdr' of the `cdr' of the `cdr' of the `car' of X." | |
| 537 (cdr (cdr (cdr (car x))))) | |
| 538 | |
| 539 (defun cddddr (x) | |
| 540 "Return the `cdr' of the `cdr' of the `cdr' of the `cdr' of X." | |
| 541 (cdr (cdr (cdr (cdr x))))) | |
| 542 | |
| 543 ;;; `last' is implemented as a C primitive, as of 1998-11 | |
| 544 | |
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545 ;;; XEmacs: `list*' is in subr.el. |
| 428 | 546 |
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547 ;; XEmacs; handle dotted lists properly, error on circularity and if LIST is |
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548 ;; not a list. |
| 428 | 549 (defun ldiff (list sublist) |
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550 "Return a copy of LIST with the tail SUBLIST removed. |
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551 |
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552 If SUBLIST is the same Lisp object as LIST, return nil. If SUBLIST is |
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553 not present in the list structure of LIST (that is, it is not the cdr |
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554 of some cons making up LIST), this function is equivalent to |
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555 `copy-list'. LIST may be dotted." |
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556 (check-argument-type #'listp list) |
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557 (and list (not (eq list sublist)) |
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558 (let ((before list) (evenp t) result) |
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559 (prog1 |
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560 (setq result (list (car list))) |
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561 (while (and (setq list (cdr-safe list)) (not (eql list sublist))) |
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562 (setcdr result (if (consp list) (list (car list)) list)) |
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563 (setq result (cdr result) |
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564 evenp (not evenp)) |
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565 (if evenp (setq before (cdr before))) |
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566 (if (eq before list) (error 'circular-list list))))))) |
| 428 | 567 |
| 568 ;;; `copy-list' is implemented as a C primitive, as of 1998-11 | |
| 569 | |
| 570 (defalias 'cl-member 'memq) ; for compatibility with old CL package | |
| 571 (defalias 'cl-floor 'floor*) | |
| 572 (defalias 'cl-ceiling 'ceiling*) | |
| 573 (defalias 'cl-truncate 'truncate*) | |
| 574 (defalias 'cl-round 'round*) | |
| 575 (defalias 'cl-mod 'mod*) | |
| 576 | |
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577 ;;; XEmacs; #'acons is in C. |
| 428 | 578 |
|
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579 (defun pairlis (keys values &optional alist) |
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580 "Make an alist from KEYS and VALUES. |
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581 Return a new alist composed by associating KEYS to corresponding VALUES; |
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582 the process stops as soon as KEYS or VALUES run out. |
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583 If ALIST is non-nil, the new pairs are prepended to it." |
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584 (nconc (mapcar* 'cons keys values) alist)) |
| 428 | 585 |
| 586 ;;; Miscellaneous. | |
| 587 | |
| 588 ;; XEmacs change | |
| 589 (define-error 'cl-assertion-failed "Assertion failed") | |
| 590 | |
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591 ;; XEmacs; provide a milquetoast amount of compatibility in our error symbols. |
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592 (define-error 'type-error "Wrong type" 'wrong-type-argument) |
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593 (define-error 'program-error "Error in your program" 'invalid-argument) |
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594 |
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595 (map-plist |
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596 #'(lambda (key value) |
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597 (mapc #'(lambda (error) |
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598 (put error 'error-conditions |
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599 (cons key (get error 'error-conditions)))) |
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600 value)) |
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601 '(program-error (wrong-number-of-arguments invalid-keyword-argument) |
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602 type-error (wrong-type-argument malformed-list circular-list))) |
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603 |
| 2153 | 604 ;; XEmacs change: omit the autoload rules; we handle those a different way |
| 428 | 605 |
| 606 ;;; Define data for indentation and edebug. | |
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607 (mapc |
| 428 | 608 #'(lambda (entry) |
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609 (mapc |
| 428 | 610 #'(lambda (func) |
| 611 (put func 'lisp-indent-function (nth 1 entry)) | |
| 612 (put func 'lisp-indent-hook (nth 1 entry)) | |
| 613 (or (get func 'edebug-form-spec) | |
| 614 (put func 'edebug-form-spec (nth 2 entry)))) | |
| 615 (car entry))) | |
| 616 '(((defun* defmacro*) defun) | |
| 617 ((function*) nil | |
| 618 (&or symbolp ([&optional 'macro] 'lambda (&rest sexp) &rest form))) | |
| 619 ((eval-when) 1 (sexp &rest form)) | |
| 620 ((when unless) 1 (&rest form)) | |
| 621 ((declare) nil (&rest sexp)) | |
| 622 ((the) 1 (sexp &rest form)) | |
| 623 ((case ecase typecase etypecase) 1 (form &rest (sexp &rest form))) | |
| 624 ((block return-from) 1 (sexp &rest form)) | |
| 625 ((return) nil (&optional form)) | |
| 626 ((do do*) 2 ((&rest &or symbolp (symbolp &optional form form)) | |
| 627 (form &rest form) | |
| 628 &rest form)) | |
| 629 ((dolist dotimes) 1 ((symbolp form &rest form) &rest form)) | |
| 630 ((do-symbols) 1 ((symbolp form &optional form form) &rest form)) | |
| 631 ((do-all-symbols) 1 ((symbolp form &optional form) &rest form)) | |
| 632 ((psetq setf psetf) nil edebug-setq-form) | |
| 633 ((progv) 2 (&rest form)) | |
| 634 ((flet labels macrolet) 1 | |
| 635 ((&rest (sexp sexp &rest form)) &rest form)) | |
| 636 ((symbol-macrolet lexical-let lexical-let*) 1 | |
| 637 ((&rest &or symbolp (symbolp form)) &rest form)) | |
| 638 ((multiple-value-bind) 2 ((&rest symbolp) &rest form)) | |
| 639 ((multiple-value-setq) 1 ((&rest symbolp) &rest form)) | |
| 640 ((incf decf remf pop push pushnew shiftf rotatef) nil (&rest form)) | |
| 641 ((letf letf*) 1 ((&rest (&rest form)) &rest form)) | |
| 642 ((callf destructuring-bind) 2 (sexp form &rest form)) | |
| 643 ((callf2) 3 (sexp form form &rest form)) | |
| 644 ((loop) defun (&rest &or symbolp form)) | |
| 645 ((ignore-errors) 0 (&rest form)))) | |
| 646 | |
| 647 ;;; This goes here so that cl-macs can find it if it loads right now. | |
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648 (provide 'cl-19) |
| 428 | 649 |
| 650 ;;; Things to do after byte-compiler is loaded. | |
| 651 ;;; As a side effect, we cause cl-macs to be loaded when compiling, so | |
| 652 ;;; that the compiler-macros defined there will be present. | |
| 653 | |
| 654 (defvar cl-hacked-flag nil) | |
| 655 (defun cl-hack-byte-compiler () | |
| 656 (if (and (not cl-hacked-flag) (fboundp 'byte-compile-file-form)) | |
| 657 (progn | |
| 2153 | 658 (setq cl-hacked-flag t) ; Do it first, to prevent recursion. |
| 442 | 659 (when (not (fboundp 'cl-compile-time-init)) |
| 660 (load "cl-macs" nil t)) | |
| 2153 | 661 (cl-compile-time-init)))) ; In cl-macs.el. |
| 428 | 662 |
| 663 ;;; Try it now in case the compiler has already been loaded. | |
| 664 (cl-hack-byte-compiler) | |
| 665 | |
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666 ;;; Also make a hook in case compiler is loaded after this file. |
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667 (add-hook 'bytecomp-load-hook 'cl-hack-byte-compiler) |
| 428 | 668 |
| 669 ;;; The following ensures that packages which expect the old-style cl.el | |
| 670 ;;; will be happy with this one. | |
| 671 | |
| 672 (provide 'cl) | |
| 673 | |
| 674 (run-hooks 'cl-load-hook) | |
| 675 | |
| 2153 | 676 ;;; arch-tag: 5f07fa74-f153-4524-9303-21f5be125851 |
| 428 | 677 ;;; cl.el ends here |