Mercurial > hg > xemacs-beta
annotate lisp/cl-compat.el @ 5324:d0bb90d90736
Provide #'device-x-display, as documented in Lispref; thanks, Jeff Mincy.
lisp/ChangeLog addition:
2010-12-30 Aidan Kehoe <kehoea@parhasard.net>
* x-misc.el (device-x-display):
Provide this function, documented in the Lispref for years, but
not existing previously. Thank you Julian Bradfield, thank you
Jeff Mincy.
| author | Aidan Kehoe <kehoea@parhasard.net> |
|---|---|
| date | Thu, 30 Dec 2010 13:46:50 +0000 |
| parents | 8b50bee3c88c |
| children | 2a54dfbe434f 308d34e9f07d |
| rev | line source |
|---|---|
| 613 | 1 ;;; cl-compat.el --- Common Lisp extensions for XEmacs Lisp (compatibility) |
| 209 | 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, Inc., 59 Temple Place - Suite 330, Boston, MA | |
| 24 ;; 02111-1307, USA. | |
| 25 | |
| 2153 | 26 ;;; Synched up with: FSF 21.3. |
| 209 | 27 |
| 28 ;;; Commentary: | |
| 29 | |
| 30 ;; These are extensions to Emacs Lisp that provide a degree of | |
| 31 ;; Common Lisp compatibility, beyond what is already built-in | |
| 32 ;; in Emacs Lisp. | |
| 33 ;; | |
| 34 ;; This package was written by Dave Gillespie; it is a complete | |
| 35 ;; rewrite of Cesar Quiroz's original cl.el package of December 1986. | |
| 36 ;; | |
| 37 ;; This package works with Emacs 18, Emacs 19, and XEmacs/Lucid Emacs 19. | |
| 38 ;; | |
| 39 ;; Bug reports, comments, and suggestions are welcome! | |
| 40 | |
| 41 ;; This file contains emulations of internal routines of the older | |
| 42 ;; CL package which users may have called directly from their code. | |
| 43 ;; Use (require 'cl-compat) to get these routines. | |
| 44 | |
| 45 ;; See cl.el for Change Log. | |
| 46 | |
| 47 | |
| 48 ;;; Code: | |
| 49 | |
| 50 ;; Require at load-time, but not when compiling cl-compat. | |
| 51 (or (featurep 'cl) (require 'cl)) | |
| 52 | |
| 53 | |
| 54 ;;; Keyword routines not supported by new package. | |
| 55 | |
| 56 (defmacro defkeyword (x &optional doc) | |
| 57 (list* 'defconst x (list 'quote x) (and doc (list doc)))) | |
| 58 | |
| 59 (defun keyword-of (sym) | |
|
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60 (or (keywordp sym) (keywordp (read (format ":%s" sym))))) |
| 209 | 61 |
| 62 ;;; Routines for parsing keyword arguments. | |
| 63 | |
| 64 (defun build-klist (arglist keys &optional allow-others) | |
|
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65 (let ((res (multiple-value-call 'mapcar* 'cons (unzip-lists arglist)))) |
| 209 | 66 (or allow-others |
| 67 (let ((bad (set-difference (mapcar 'car res) keys))) | |
| 68 (if bad (error "Bad keywords: %s not in %s" bad keys)))) | |
| 69 res)) | |
| 70 | |
| 71 (defun extract-from-klist (klist key &optional def) | |
| 72 (let ((res (assq key klist))) (if res (cdr res) def))) | |
| 73 | |
| 74 (defun keyword-argument-supplied-p (klist key) | |
| 75 (assq key klist)) | |
| 76 | |
| 77 (defun elt-satisfies-test-p (item elt klist) | |
| 78 (let ((test-not (cdr (assq ':test-not klist))) | |
| 79 (test (cdr (assq ':test klist))) | |
| 80 (key (cdr (assq ':key klist)))) | |
| 81 (if key (setq elt (funcall key elt))) | |
| 82 (if test-not (not (funcall test-not item elt)) | |
| 83 (funcall (or test 'eql) item elt)))) | |
| 84 | |
|
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Make #'floor, #'ceiling, #'round, #'truncate conform to Common Lisp.
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85 ;; The rounding functions in C now have all the functionality this package |
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Make #'floor, #'ceiling, #'round, #'truncate conform to Common Lisp.
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parents:
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86 ;; used to: |
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b5e1d4f6b66f
Make #'floor, #'ceiling, #'round, #'truncate conform to Common Lisp.
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parents:
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diff
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87 (loop |
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b5e1d4f6b66f
Make #'floor, #'ceiling, #'round, #'truncate conform to Common Lisp.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4677
diff
changeset
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88 for symbol in '(floor ceiling round truncate) |
|
b5e1d4f6b66f
Make #'floor, #'ceiling, #'round, #'truncate conform to Common Lisp.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4677
diff
changeset
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89 do (defalias (intern (format "cl-%s" symbol)) symbol)) |
| 209 | 90 |
| 91 (defun safe-idiv (a b) | |
| 92 (let* ((q (/ (abs a) (abs b))) | |
| 93 (s (* (signum a) (signum b)))) | |
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Support full Common Lisp multiple values in C.
Aidan Kehoe <kehoea@parhasard.net>
parents:
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94 (values q (- a (* s q b)) s))) |
| 209 | 95 |
| 96 ;; Internal routines. | |
| 97 | |
| 98 (defun pair-with-newsyms (oldforms) | |
| 99 (let ((newsyms (mapcar (function (lambda (x) (gensym))) oldforms))) | |
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parents:
2153
diff
changeset
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100 (values (mapcar* 'list newsyms oldforms) newsyms))) |
| 209 | 101 |
| 102 (defun zip-lists (evens odds) | |
| 103 (mapcan 'list evens odds)) | |
| 104 | |
| 105 (defun unzip-lists (list) | |
| 106 (let ((e nil) (o nil)) | |
| 107 (while list | |
| 108 (setq e (cons (car list) e) o (cons (cadr list) o) list (cddr list))) | |
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Aidan Kehoe <kehoea@parhasard.net>
parents:
2153
diff
changeset
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109 (values (nreverse e) (nreverse o)))) |
| 209 | 110 |
| 111 (defun reassemble-argslists (list) | |
| 112 (let ((n (apply 'min (mapcar 'length list))) (res nil)) | |
| 113 (while (>= (setq n (1- n)) 0) | |
| 114 (setq res (cons (mapcar (function (lambda (x) (elt x n))) list) res))) | |
| 115 res)) | |
| 116 | |
| 117 (defun duplicate-symbols-p (list) | |
| 118 (let ((res nil)) | |
| 119 (while list | |
| 120 (if (memq (car list) (cdr list)) (setq res (cons (car list) res))) | |
| 121 (setq list (cdr list))) | |
| 122 res)) | |
| 123 | |
| 124 | |
| 125 ;;; Setf internals. | |
| 126 | |
| 127 (defun setnth (n list x) | |
| 128 (setcar (nthcdr n list) x)) | |
| 129 | |
| 130 (defun setnthcdr (n list x) | |
| 131 (setcdr (nthcdr (1- n) list) x)) | |
| 132 | |
| 133 (defun setelt (seq n x) | |
| 134 (if (consp seq) (setcar (nthcdr n seq) x) (aset seq n x))) | |
| 135 | |
| 136 | |
| 137 ;;; Functions omitted: case-clausify, check-do-stepforms, check-do-endforms, | |
| 138 ;;; extract-do-inits, extract-do[*]-steps, select-stepping-forms, | |
| 139 ;;; elt-satisfies-if[-not]-p, with-keyword-args, mv-bind-clausify, | |
| 140 ;;; all names with embedded `$'. | |
| 141 | |
| 142 | |
| 143 (provide 'cl-compat) | |
| 144 | |
| 2153 | 145 ;;; arch-tag: 9996bb4f-aaf5-4592-b436-bf64759a3163 |
| 209 | 146 ;;; cl-compat.el ends here |