annotate lisp/cl-extra.el @ 1940:9322ca8d1ba0

[xemacs-hg @ 2004-03-06 22:50:32 by viteno] Update xemacs_extra_name.
author viteno
date Sat, 06 Mar 2004 22:50:32 +0000
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children 9c872f33ecbe
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023b83f4e54b [xemacs-hg @ 2001-06-10 10:42:16 by ben]
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1 ;;; cl-extra.el --- Common Lisp extensions for XEmacs Lisp (part two)
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2
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3 ;; Copyright (C) 1993 Free Software Foundation, Inc.
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4 ;; Copyright (C) 2002 Ben Wing.
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5
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6 ;; Author: Dave Gillespie <daveg@synaptics.com>
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7 ;; Maintainer: XEmacs Development Team
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8 ;; Version: 2.02
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9 ;; Keywords: extensions, dumped
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10
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11 ;; This file is part of XEmacs.
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12
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13 ;; XEmacs is free software; you can redistribute it and/or modify it
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14 ;; under the terms of the GNU General Public License as published by
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15 ;; the Free Software Foundation; either version 2, or (at your option)
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16 ;; any later version.
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17
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18 ;; XEmacs is distributed in the hope that it will be useful, but
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19 ;; WITHOUT ANY WARRANTY; without even the implied warranty of
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20 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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21 ;; General Public License for more details.
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22
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23 ;; You should have received a copy of the GNU General Public License
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24 ;; along with XEmacs; see the file COPYING. If not, write to the Free
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25 ;; Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
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26 ;; 02111-1307, USA.
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27
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28 ;;; Synched up with: FSF 19.34.
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29
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30 ;;; Commentary:
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31
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32 ;; This file is dumped with XEmacs.
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33
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34 ;; These are extensions to Emacs Lisp that provide a degree of
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35 ;; Common Lisp compatibility, beyond what is already built-in
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36 ;; in Emacs Lisp.
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37 ;;
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38 ;; This package was written by Dave Gillespie; it is a complete
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39 ;; rewrite of Cesar Quiroz's original cl.el package of December 1986.
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40 ;;
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41 ;; This package works with Emacs 18, Emacs 19, and XEmacs/Lucid Emacs 19.
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42 ;;
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43 ;; Bug reports, comments, and suggestions are welcome!
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44
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45 ;; This file contains portions of the Common Lisp extensions
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46 ;; package which are autoloaded since they are relatively obscure.
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47
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48 ;; See cl.el for Change Log.
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49
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50
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51 ;;; Code:
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52 (eval-when-compile
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53 (require 'obsolete))
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54
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55 (or (memq 'cl-19 features)
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56 (error "Tried to load `cl-extra' before `cl'!"))
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57
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58
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59 ;;; We define these here so that this file can compile without having
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60 ;;; loaded the cl.el file already.
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61
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62 (defmacro cl-push (x place) (list 'setq place (list 'cons x place)))
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63 (defmacro cl-pop (place)
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64 (list 'car (list 'prog1 place (list 'setq place (list 'cdr place)))))
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65
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66 (defvar cl-emacs-type)
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67
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68
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69 ;;; Type coercion.
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70
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71 (defun coerce (x type)
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72 "Coerce OBJECT to type TYPE.
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73 TYPE is a Common Lisp type specifier."
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74 (cond ((eq type 'list) (if (listp x) x (append x nil)))
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75 ((eq type 'vector) (if (vectorp x) x (vconcat x)))
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76 ((eq type 'string) (if (stringp x) x (concat x)))
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77 ((eq type 'array) (if (arrayp x) x (vconcat x)))
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78 ((and (eq type 'character) (stringp x) (= (length x) 1)) (aref x 0))
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79 ((and (eq type 'character) (symbolp x)) (coerce (symbol-name x) type))
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80 ((and (eq type 'character) (char-int-p x)) (int-char x))
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81 ((and (eq type 'integer) (characterp x)) (char-int x))
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82 ((eq type 'float) (float x))
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83 ((eq type 'bit-vector) (if (bit-vector-p x) x
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84 (apply 'bit-vector (append x nil))))
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85 ((eq type 'weak-list)
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86 (if (weak-list-p x) x
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87 (let ((wl (make-weak-list)))
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88 (set-weak-list-list wl (if (listp x) x (append x nil)))
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89 wl)))
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90 ((typep x type) x)
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91 (t (error "Can't coerce %s to type %s" x type))))
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92
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93
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94 ;;; Predicates.
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95
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96 (defun equalp (x y)
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97 "Return t if two Lisp objects have similar structures and contents.
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98 This is like `equal', except that it accepts numerically equal
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99 numbers of different types (float vs. integer), and also compares
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100 strings case-insensitively."
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101 (cond ((eq x y) t)
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102 ((stringp x)
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103 ;; avoids downcase
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104 (eq t (compare-strings x nil nil y nil nil t)))
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105 ((characterp x)
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106 (and (characterp y)
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107 (or (char-equal x y)
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108 (char-equal (downcase x) (downcase y)))))
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109 ((numberp x)
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110 (and (numberp y) (= x y)))
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111 ((consp x)
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112 ;; XEmacs change
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113 (while (and (consp x) (consp y) (equalp (car x) (car y)))
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114 (cl-pop x) (cl-pop y))
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115 (and (not (consp x)) (equalp x y)))
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116 ((vectorp x)
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117 (and (vectorp y) (= (length x) (length y))
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118 (let ((i (length x)))
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119 (while (and (>= (setq i (1- i)) 0)
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120 (equalp (aref x i) (aref y i))))
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121 (< i 0))))
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122 (t (equal x y))))
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123
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124
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125 ;;; Control structures.
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126
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127 (defun cl-mapcar-many (cl-func cl-seqs)
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128 (if (cdr (cdr cl-seqs))
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129 (let* ((cl-res nil)
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130 (cl-n (apply 'min (mapcar 'length cl-seqs)))
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131 (cl-i 0)
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132 (cl-args (copy-sequence cl-seqs))
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133 cl-p1 cl-p2)
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134 (setq cl-seqs (copy-sequence cl-seqs))
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135 (while (< cl-i cl-n)
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136 (setq cl-p1 cl-seqs cl-p2 cl-args)
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137 (while cl-p1
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138 (setcar cl-p2
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139 (if (consp (car cl-p1))
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140 (prog1 (car (car cl-p1))
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141 (setcar cl-p1 (cdr (car cl-p1))))
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142 (aref (car cl-p1) cl-i)))
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143 (setq cl-p1 (cdr cl-p1) cl-p2 (cdr cl-p2)))
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144 (cl-push (apply cl-func cl-args) cl-res)
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145 (setq cl-i (1+ cl-i)))
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146 (nreverse cl-res))
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147 (let ((cl-res nil)
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148 (cl-x (car cl-seqs))
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149 (cl-y (nth 1 cl-seqs)))
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150 (let ((cl-n (min (length cl-x) (length cl-y)))
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151 (cl-i -1))
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152 (while (< (setq cl-i (1+ cl-i)) cl-n)
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153 (cl-push (funcall cl-func
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154 (if (consp cl-x) (cl-pop cl-x) (aref cl-x cl-i))
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155 (if (consp cl-y) (cl-pop cl-y) (aref cl-y cl-i)))
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156 cl-res)))
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157 (nreverse cl-res))))
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158
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159 (defun map (cl-type cl-func cl-seq &rest cl-rest)
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160 "Map a function across one or more sequences, returning a sequence.
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161 TYPE is the sequence type to return, FUNC is the function, and SEQS
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162 are the argument sequences."
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163 (let ((cl-res (apply 'mapcar* cl-func cl-seq cl-rest)))
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164 (and cl-type (coerce cl-res cl-type))))
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165
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166 (defun maplist (cl-func cl-list &rest cl-rest)
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167 "Map FUNC to each sublist of LIST or LISTS.
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168 Like `mapcar', except applies to lists and their cdr's rather than to
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169 the elements themselves."
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170 (if cl-rest
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171 (let ((cl-res nil)
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172 (cl-args (cons cl-list (copy-sequence cl-rest)))
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173 cl-p)
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174 (while (not (memq nil cl-args))
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175 (cl-push (apply cl-func cl-args) cl-res)
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176 (setq cl-p cl-args)
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177 (while cl-p (setcar cl-p (cdr (cl-pop cl-p)) )))
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178 (nreverse cl-res))
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179 (let ((cl-res nil))
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180 (while cl-list
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181 (cl-push (funcall cl-func cl-list) cl-res)
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182 (setq cl-list (cdr cl-list)))
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183 (nreverse cl-res))))
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184
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185
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186 (defun mapc (cl-func cl-seq &rest cl-rest)
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187 "Like `mapcar', but does not accumulate values returned by the function."
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188 (if cl-rest
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189 (apply 'map nil cl-func cl-seq cl-rest)
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190 ;; XEmacs change: in the simplest case we call mapc-internal,
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191 ;; which really doesn't accumulate any results.
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192 (mapc-internal cl-func cl-seq))
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193 cl-seq)
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194
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195 (defun mapl (cl-func cl-list &rest cl-rest)
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196 "Like `maplist', but does not accumulate values returned by the function."
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197 (if cl-rest
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198 (apply 'maplist cl-func cl-list cl-rest)
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199 (let ((cl-p cl-list))
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200 (while cl-p (funcall cl-func cl-p) (setq cl-p (cdr cl-p)))))
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201 cl-list)
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202
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203 (defun mapcan (cl-func cl-seq &rest cl-rest)
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204 "Like `mapcar', but nconc's together the values returned by the function."
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205 (apply 'nconc (apply 'mapcar* cl-func cl-seq cl-rest)))
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206
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207 (defun mapcon (cl-func cl-list &rest cl-rest)
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208 "Like `maplist', but nconc's together the values returned by the function."
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209 (apply 'nconc (apply 'maplist cl-func cl-list cl-rest)))
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210
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211 (defun some (cl-pred cl-seq &rest cl-rest)
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212 "Return true if PREDICATE is true of any element of SEQ or SEQs.
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213 If so, return the true (non-nil) value returned by PREDICATE."
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214 (if (or cl-rest (nlistp cl-seq))
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215 (catch 'cl-some
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216 (apply 'map nil
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217 (function (lambda (&rest cl-x)
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218 (let ((cl-res (apply cl-pred cl-x)))
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219 (if cl-res (throw 'cl-some cl-res)))))
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220 cl-seq cl-rest) nil)
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221 (let ((cl-x nil))
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222 (while (and cl-seq (not (setq cl-x (funcall cl-pred (cl-pop cl-seq))))))
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223 cl-x)))
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224
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225 (defun every (cl-pred cl-seq &rest cl-rest)
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226 "Return true if PREDICATE is true of every element of SEQ or SEQs."
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227 (if (or cl-rest (nlistp cl-seq))
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228 (catch 'cl-every
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229 (apply 'map nil
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230 (function (lambda (&rest cl-x)
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231 (or (apply cl-pred cl-x) (throw 'cl-every nil))))
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232 cl-seq cl-rest) t)
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233 (while (and cl-seq (funcall cl-pred (car cl-seq)))
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234 (setq cl-seq (cdr cl-seq)))
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235 (null cl-seq)))
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236
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237 (defun notany (cl-pred cl-seq &rest cl-rest)
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238 "Return true if PREDICATE is false of every element of SEQ or SEQs."
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cvs
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239 (not (apply 'some cl-pred cl-seq cl-rest)))
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240
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241 (defun notevery (cl-pred cl-seq &rest cl-rest)
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242 "Return true if PREDICATE is false of some element of SEQ or SEQs."
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243 (not (apply 'every cl-pred cl-seq cl-rest)))
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244
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245 ;;; Support for `loop'.
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246 (defun cl-map-keymap (cl-func cl-map)
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247 (while (symbolp cl-map) (setq cl-map (symbol-function cl-map)))
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248 (if (eq cl-emacs-type 'lucid) (funcall 'map-keymap cl-func cl-map)
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249 (if (listp cl-map)
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250 (let ((cl-p cl-map))
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251 (while (consp (setq cl-p (cdr cl-p)))
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252 (cond ((consp (car cl-p))
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253 (funcall cl-func (car (car cl-p)) (cdr (car cl-p))))
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254 ((vectorp (car cl-p))
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255 (cl-map-keymap cl-func (car cl-p)))
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256 ((eq (car cl-p) 'keymap)
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257 (setq cl-p nil)))))
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258 (let ((cl-i -1))
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259 (while (< (setq cl-i (1+ cl-i)) (length cl-map))
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260 (if (aref cl-map cl-i)
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261 (funcall cl-func cl-i (aref cl-map cl-i))))))))
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262
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263 (defun cl-map-keymap-recursively (cl-func-rec cl-map &optional cl-base)
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264 (or cl-base
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265 (setq cl-base (copy-sequence (if (eq cl-emacs-type 18) "0" [0]))))
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266 (cl-map-keymap
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267 (function
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268 (lambda (cl-key cl-bind)
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269 (aset cl-base (1- (length cl-base)) cl-key)
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270 (if (keymapp cl-bind)
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271 (cl-map-keymap-recursively
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272 cl-func-rec cl-bind
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273 (funcall (if (eq cl-emacs-type 18) 'concat 'vconcat)
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274 cl-base (list 0)))
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275 (funcall cl-func-rec cl-base cl-bind))))
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276 cl-map))
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277
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278 (defun cl-map-intervals (cl-func &optional cl-what cl-prop cl-start cl-end)
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279 (or cl-what (setq cl-what (current-buffer)))
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280 (if (bufferp cl-what)
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281 (let (cl-mark cl-mark2 (cl-next t) cl-next2)
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282 (save-excursion
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283 (set-buffer cl-what)
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284 (setq cl-mark (copy-marker (or cl-start (point-min))))
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285 (setq cl-mark2 (and cl-end (copy-marker cl-end))))
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286 (while (and cl-next (or (not cl-mark2) (< cl-mark cl-mark2)))
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287 (setq cl-next (and-fboundp 'next-property-change
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288 (if cl-prop (next-single-property-change
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289 cl-mark cl-prop cl-what)
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290 (next-property-change cl-mark cl-what)))
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291 cl-next2 (or cl-next (save-excursion
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292 (set-buffer cl-what) (point-max))))
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293 (funcall cl-func (prog1 (marker-position cl-mark)
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294 (set-marker cl-mark cl-next2))
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295 (if cl-mark2 (min cl-next2 cl-mark2) cl-next2)))
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296 (set-marker cl-mark nil) (if cl-mark2 (set-marker cl-mark2 nil)))
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297 (or cl-start (setq cl-start 0))
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298 (or cl-end (setq cl-end (length cl-what)))
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299 (while (< cl-start cl-end)
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300 (let ((cl-next (or (and-fboundp 'next-property-change
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301 (if cl-prop (next-single-property-change
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302 cl-start cl-prop cl-what)
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303 (next-property-change cl-start cl-what)))
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304 cl-end)))
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305 (funcall cl-func cl-start (min cl-next cl-end))
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306 (setq cl-start cl-next)))))
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307
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308 (defun cl-map-overlays (cl-func &optional cl-buffer cl-start cl-end cl-arg)
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309 (or cl-buffer (setq cl-buffer (current-buffer)))
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310 (with-fboundp '(overlay-start overlay-end overlays-at next-overlay-change)
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311 (if-fboundp 'overlay-lists
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312
502
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313 ;; This is the preferred algorithm, though overlay-lists is
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314 ;; undocumented.
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315 (let (cl-ovl)
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316 (save-excursion
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317 (set-buffer cl-buffer)
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318 (setq cl-ovl (overlay-lists))
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319 (if cl-start (setq cl-start (copy-marker cl-start)))
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320 (if cl-end (setq cl-end (copy-marker cl-end))))
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321 (setq cl-ovl (nconc (car cl-ovl) (cdr cl-ovl)))
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322 (while (and cl-ovl
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323 (or (not (overlay-start (car cl-ovl)))
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324 (and cl-end (>= (overlay-start (car cl-ovl)) cl-end))
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325 (and cl-start (<= (overlay-end (car cl-ovl))
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326 cl-start))
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327 (not (funcall cl-func (car cl-ovl) cl-arg))))
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328 (setq cl-ovl (cdr cl-ovl)))
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diff changeset
329 (if cl-start (set-marker cl-start nil))
7039e6323819 [xemacs-hg @ 2001-05-04 22:41:46 by ben]
ben
parents: 446
diff changeset
330 (if cl-end (set-marker cl-end nil)))
7039e6323819 [xemacs-hg @ 2001-05-04 22:41:46 by ben]
ben
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diff changeset
331
7039e6323819 [xemacs-hg @ 2001-05-04 22:41:46 by ben]
ben
parents: 446
diff changeset
332 ;; This alternate algorithm fails to find zero-length overlays.
7039e6323819 [xemacs-hg @ 2001-05-04 22:41:46 by ben]
ben
parents: 446
diff changeset
333 (let ((cl-mark (save-excursion (set-buffer cl-buffer)
7039e6323819 [xemacs-hg @ 2001-05-04 22:41:46 by ben]
ben
parents: 446
diff changeset
334 (copy-marker (or cl-start (point-min)))))
7039e6323819 [xemacs-hg @ 2001-05-04 22:41:46 by ben]
ben
parents: 446
diff changeset
335 (cl-mark2 (and cl-end (save-excursion (set-buffer cl-buffer)
7039e6323819 [xemacs-hg @ 2001-05-04 22:41:46 by ben]
ben
parents: 446
diff changeset
336 (copy-marker cl-end))))
7039e6323819 [xemacs-hg @ 2001-05-04 22:41:46 by ben]
ben
parents: 446
diff changeset
337 cl-pos cl-ovl)
7039e6323819 [xemacs-hg @ 2001-05-04 22:41:46 by ben]
ben
parents: 446
diff changeset
338 (while (save-excursion
7039e6323819 [xemacs-hg @ 2001-05-04 22:41:46 by ben]
ben
parents: 446
diff changeset
339 (and (setq cl-pos (marker-position cl-mark))
7039e6323819 [xemacs-hg @ 2001-05-04 22:41:46 by ben]
ben
parents: 446
diff changeset
340 (< cl-pos (or cl-mark2 (point-max)))
7039e6323819 [xemacs-hg @ 2001-05-04 22:41:46 by ben]
ben
parents: 446
diff changeset
341 (progn
7039e6323819 [xemacs-hg @ 2001-05-04 22:41:46 by ben]
ben
parents: 446
diff changeset
342 (set-buffer cl-buffer)
7039e6323819 [xemacs-hg @ 2001-05-04 22:41:46 by ben]
ben
parents: 446
diff changeset
343 (setq cl-ovl (overlays-at cl-pos))
7039e6323819 [xemacs-hg @ 2001-05-04 22:41:46 by ben]
ben
parents: 446
diff changeset
344 (set-marker cl-mark (next-overlay-change cl-pos)))))
7039e6323819 [xemacs-hg @ 2001-05-04 22:41:46 by ben]
ben
parents: 446
diff changeset
345 (while (and cl-ovl
7039e6323819 [xemacs-hg @ 2001-05-04 22:41:46 by ben]
ben
parents: 446
diff changeset
346 (or (/= (overlay-start (car cl-ovl)) cl-pos)
7039e6323819 [xemacs-hg @ 2001-05-04 22:41:46 by ben]
ben
parents: 446
diff changeset
347 (not (and (funcall cl-func (car cl-ovl) cl-arg)
7039e6323819 [xemacs-hg @ 2001-05-04 22:41:46 by ben]
ben
parents: 446
diff changeset
348 (set-marker cl-mark nil)))))
7039e6323819 [xemacs-hg @ 2001-05-04 22:41:46 by ben]
ben
parents: 446
diff changeset
349 (setq cl-ovl (cdr cl-ovl))))
7039e6323819 [xemacs-hg @ 2001-05-04 22:41:46 by ben]
ben
parents: 446
diff changeset
350 (set-marker cl-mark nil) (if cl-mark2 (set-marker cl-mark2 nil))))))
428
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cvs
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351
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
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diff changeset
352 ;;; Support for `setf'.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
353 (defun cl-set-frame-visible-p (frame val)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
354 (cond ((null val) (make-frame-invisible frame))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
355 ((eq val 'icon) (iconify-frame frame))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
356 (t (make-frame-visible frame)))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
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357 val)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
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358
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cvs
parents:
diff changeset
359 ;;; Support for `progv'.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
360 (defvar cl-progv-save)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
361 (defun cl-progv-before (syms values)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
362 (while syms
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
363 (cl-push (if (boundp (car syms))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
364 (cons (car syms) (symbol-value (car syms)))
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cvs
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365 (car syms)) cl-progv-save)
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cvs
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366 (if values
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
367 (set (cl-pop syms) (cl-pop values))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
368 (makunbound (cl-pop syms)))))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
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369
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
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370 (defun cl-progv-after ()
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
371 (while cl-progv-save
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
372 (if (consp (car cl-progv-save))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
373 (set (car (car cl-progv-save)) (cdr (car cl-progv-save)))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
374 (makunbound (car cl-progv-save)))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
375 (cl-pop cl-progv-save)))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
376
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
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377
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
378 ;;; Numbers.
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cvs
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379
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cvs
parents:
diff changeset
380 (defun gcd (&rest args)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
381 "Return the greatest common divisor of the arguments."
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
382 (let ((a (abs (or (cl-pop args) 0))))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
383 (while args
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
384 (let ((b (abs (cl-pop args))))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
385 (while (> b 0) (setq b (% a (setq a b))))))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
386 a))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
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387
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
388 (defun lcm (&rest args)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
389 "Return the least common multiple of the arguments."
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
390 (if (memq 0 args)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
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391 0
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
392 (let ((a (abs (or (cl-pop args) 1))))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
393 (while args
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
394 (let ((b (abs (cl-pop args))))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
395 (setq a (* (/ a (gcd a b)) b))))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
396 a)))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
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397
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
398 (defun isqrt (a)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
399 "Return the integer square root of the argument."
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
400 (if (and (integerp a) (> a 0))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
401 ;; XEmacs change
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
402 (let ((g (cond ((>= a 1000000) 10000) ((>= a 10000) 1000)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
403 ((>= a 100) 100) (t 10)))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
404 g2)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
405 (while (< (setq g2 (/ (+ g (/ a g)) 2)) g)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
406 (setq g g2))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
407 g)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
408 (if (eq a 0) 0 (signal 'arith-error nil))))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
409
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
410 (defun cl-expt (x y)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
411 "Return X raised to the power of Y. Works only for integer arguments."
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
412 (if (<= y 0) (if (= y 0) 1 (if (memq x '(-1 1)) (cl-expt x (- y)) 0))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
413 (* (if (= (% y 2) 0) 1 x) (cl-expt (* x x) (/ y 2)))))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
414 (or (and (fboundp 'expt) (subrp (symbol-function 'expt)))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
415 (defalias 'expt 'cl-expt))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
416
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
417 (defun floor* (x &optional y)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
418 "Return a list of the floor of X and the fractional part of X.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
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diff changeset
419 With two arguments, return floor and remainder of their quotient."
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
420 (let ((q (floor x y)))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
421 (list q (- x (if y (* y q) q)))))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
422
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
423 (defun ceiling* (x &optional y)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
424 "Return a list of the ceiling of X and the fractional part of X.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
425 With two arguments, return ceiling and remainder of their quotient."
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
426 (let ((res (floor* x y)))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
427 (if (= (car (cdr res)) 0) res
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
428 (list (1+ (car res)) (- (car (cdr res)) (or y 1))))))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
429
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
430 (defun truncate* (x &optional y)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
431 "Return a list of the integer part of X and the fractional part of X.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
432 With two arguments, return truncation and remainder of their quotient."
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
433 (if (eq (>= x 0) (or (null y) (>= y 0)))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
434 (floor* x y) (ceiling* x y)))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
435
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
436 (defun round* (x &optional y)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
437 "Return a list of X rounded to the nearest integer and the remainder.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
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diff changeset
438 With two arguments, return rounding and remainder of their quotient."
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
439 (if y
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
440 (if (and (integerp x) (integerp y))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
441 (let* ((hy (/ y 2))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
442 (res (floor* (+ x hy) y)))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
443 (if (and (= (car (cdr res)) 0)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
444 (= (+ hy hy) y)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
445 (/= (% (car res) 2) 0))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
446 (list (1- (car res)) hy)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
447 (list (car res) (- (car (cdr res)) hy))))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
448 (let ((q (round (/ x y))))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
449 (list q (- x (* q y)))))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
450 (if (integerp x) (list x 0)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
451 (let ((q (round x)))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
452 (list q (- x q))))))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
453
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
454 (defun mod* (x y)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
455 "The remainder of X divided by Y, with the same sign as Y."
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
456 (nth 1 (floor* x y)))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
457
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
458 (defun rem* (x y)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
459 "The remainder of X divided by Y, with the same sign as X."
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
460 (nth 1 (truncate* x y)))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
461
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
462 (defun signum (a)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
463 "Return 1 if A is positive, -1 if negative, 0 if zero."
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
464 (cond ((> a 0) 1) ((< a 0) -1) (t 0)))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
465
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
466
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
467 ;; Random numbers.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
468
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
469 (defvar *random-state*)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
470 (defun random* (lim &optional state)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
471 "Return a random nonnegative number less than LIM, an integer or float.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
472 Optional second arg STATE is a random-state object."
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
473 (or state (setq state *random-state*))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
474 ;; Inspired by "ran3" from Numerical Recipes. Additive congruential method.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
475 (let ((vec (aref state 3)))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
476 (if (integerp vec)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
477 (let ((i 0) (j (- 1357335 (% (abs vec) 1357333))) (k 1))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
478 (aset state 3 (setq vec (make-vector 55 nil)))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
479 (aset vec 0 j)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
480 (while (> (setq i (% (+ i 21) 55)) 0)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
481 (aset vec i (setq j (prog1 k (setq k (- j k))))))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
482 (while (< (setq i (1+ i)) 200) (random* 2 state))))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
483 (let* ((i (aset state 1 (% (1+ (aref state 1)) 55)))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
484 (j (aset state 2 (% (1+ (aref state 2)) 55)))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
485 (n (logand 8388607 (aset vec i (- (aref vec i) (aref vec j))))))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
486 (if (integerp lim)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
487 (if (<= lim 512) (% n lim)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
488 (if (> lim 8388607) (setq n (+ (lsh n 9) (random* 512 state))))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
489 (let ((mask 1023))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
490 (while (< mask (1- lim)) (setq mask (1+ (+ mask mask))))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
491 (if (< (setq n (logand n mask)) lim) n (random* lim state))))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
492 (* (/ n '8388608e0) lim)))))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
493
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
494 (defun make-random-state (&optional state)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
495 "Return a copy of random-state STATE, or of `*random-state*' if omitted.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
496 If STATE is t, return a new state object seeded from the time of day."
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
497 (cond ((null state) (make-random-state *random-state*))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
498 ((vectorp state) (cl-copy-tree state t))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
499 ((integerp state) (vector 'cl-random-state-tag -1 30 state))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
500 (t (make-random-state (cl-random-time)))))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
501
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
502 (defun random-state-p (object)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
503 "Return t if OBJECT is a random-state object."
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
504 (and (vectorp object) (= (length object) 4)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
505 (eq (aref object 0) 'cl-random-state-tag)))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
506
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
507
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
508 ;; Implementation limits.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
509
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
510 (defun cl-finite-do (func a b)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
511 (condition-case nil
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
512 (let ((res (funcall func a b))) ; check for IEEE infinity
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
513 (and (numberp res) (/= res (/ res 2)) res))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
514 (arith-error nil)))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
515
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
516 (defvar most-positive-float)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
517 (defvar most-negative-float)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
518 (defvar least-positive-float)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
519 (defvar least-negative-float)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
520 (defvar least-positive-normalized-float)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
521 (defvar least-negative-normalized-float)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
522 (defvar float-epsilon)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
523 (defvar float-negative-epsilon)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
524
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
525 (defun cl-float-limits ()
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
526 (or most-positive-float (not (numberp '2e1))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
527 (let ((x '2e0) y z)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
528 ;; Find maximum exponent (first two loops are optimizations)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
529 (while (cl-finite-do '* x x) (setq x (* x x)))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
530 (while (cl-finite-do '* x (/ x 2)) (setq x (* x (/ x 2))))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
531 (while (cl-finite-do '+ x x) (setq x (+ x x)))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
532 (setq z x y (/ x 2))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
533 ;; Now fill in 1's in the mantissa.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
534 (while (and (cl-finite-do '+ x y) (/= (+ x y) x))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
535 (setq x (+ x y) y (/ y 2)))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
536 (setq most-positive-float x
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
537 most-negative-float (- x))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
538 ;; Divide down until mantissa starts rounding.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
539 (setq x (/ x z) y (/ 16 z) x (* x y))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
540 (while (condition-case nil (and (= x (* (/ x 2) 2)) (> (/ y 2) 0))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
541 (arith-error nil))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
542 (setq x (/ x 2) y (/ y 2)))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
543 (setq least-positive-normalized-float y
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
544 least-negative-normalized-float (- y))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
545 ;; Divide down until value underflows to zero.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
546 (setq x (/ 1 z) y x)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
547 (while (condition-case nil (> (/ x 2) 0) (arith-error nil))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
548 (setq x (/ x 2)))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
549 (setq least-positive-float x
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
550 least-negative-float (- x))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
551 (setq x '1e0)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
552 (while (/= (+ '1e0 x) '1e0) (setq x (/ x 2)))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
553 (setq float-epsilon (* x 2))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
554 (setq x '1e0)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
555 (while (/= (- '1e0 x) '1e0) (setq x (/ x 2)))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
556 (setq float-negative-epsilon (* x 2))))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
557 nil)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
558
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
559
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
560 ;;; Sequence functions.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
561
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
562 ;XEmacs -- our built-in is more powerful.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
563 ;(defun subseq (seq start &optional end)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
564 ; "Return the subsequence of SEQ from START to END.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
565 ;If END is omitted, it defaults to the length of the sequence.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
566 ;If START or END is negative, it counts from the end."
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
567 ; (if (stringp seq) (substring seq start end)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
568 ; (let (len)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
569 ; (and end (< end 0) (setq end (+ end (setq len (length seq)))))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
570 ; (if (< start 0) (setq start (+ start (or len (setq len (length seq))))))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
571 ; (cond ((listp seq)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
572 ; (if (> start 0) (setq seq (nthcdr start seq)))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
573 ; (if end
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
574 ; (let ((res nil))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
575 ; (while (>= (setq end (1- end)) start)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
576 ; (cl-push (cl-pop seq) res))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
577 ; (nreverse res))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
578 ; (copy-sequence seq)))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
579 ; (t
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
580 ; (or end (setq end (or len (length seq))))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
581 ; (let ((res (make-vector (max (- end start) 0) nil))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
582 ; (i 0))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
583 ; (while (< start end)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
584 ; (aset res i (aref seq start))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
585 ; (setq i (1+ i) start (1+ start)))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
586 ; res))))))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
587
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
588 (defun concatenate (type &rest seqs)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
589 "Concatenate, into a sequence of type TYPE, the argument SEQUENCES."
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
590 (case type
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
591 (vector (apply 'vconcat seqs))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
592 (string (apply 'concat seqs))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
593 (list (apply 'append (append seqs '(nil))))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
594 (t (error "Not a sequence type name: %s" type))))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
595
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
596 ;;; List functions.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
597
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
598 (defun revappend (x y)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
599 "Equivalent to (append (reverse X) Y)."
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
600 (nconc (reverse x) y))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
601
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
602 (defun nreconc (x y)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
603 "Equivalent to (nconc (nreverse X) Y)."
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
604 (nconc (nreverse x) y))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
605
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
606 (defun list-length (x)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
607 "Return the length of a list. Return nil if list is circular."
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
608 (let ((n 0) (fast x) (slow x))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
609 (while (and (cdr fast) (not (and (eq fast slow) (> n 0))))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
610 (setq n (+ n 2) fast (cdr (cdr fast)) slow (cdr slow)))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
611 (if fast (if (cdr fast) nil (1+ n)) n)))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
612
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
613 (defun tailp (sublist list)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
614 "Return true if SUBLIST is a tail of LIST."
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
615 (while (and (consp list) (not (eq sublist list)))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
616 (setq list (cdr list)))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
617 (if (numberp sublist) (equal sublist list) (eq sublist list)))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
618
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
619 (defun cl-copy-tree (tree &optional vecp)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
620 "Make a copy of TREE.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
621 If TREE is a cons cell, this recursively copies both its car and its cdr.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
622 Contrast to copy-sequence, which copies only along the cdrs. With second
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
623 argument VECP, this copies vectors as well as conses."
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
624 (if (consp tree)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
625 (let ((p (setq tree (copy-list tree))))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
626 (while (consp p)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
627 (if (or (consp (car p)) (and vecp (vectorp (car p))))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
628 (setcar p (cl-copy-tree (car p) vecp)))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
629 (or (listp (cdr p)) (setcdr p (cl-copy-tree (cdr p) vecp)))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
630 (cl-pop p)))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
631 (if (and vecp (vectorp tree))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
632 (let ((i (length (setq tree (copy-sequence tree)))))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
633 (while (>= (setq i (1- i)) 0)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
634 (aset tree i (cl-copy-tree (aref tree i) vecp))))))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
635 tree)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
636 (or (and (fboundp 'copy-tree) (subrp (symbol-function 'copy-tree)))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
637 (defalias 'copy-tree 'cl-copy-tree))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
638
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
639
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
640 ;;; Property lists.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
641
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
642 ;; XEmacs: our `get' groks DEFAULT.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
643 (defalias 'get* 'get)
442
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
644 (defalias 'getf 'plist-get)
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
645
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
646 (defun cl-set-getf (plist tag val)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
647 (let ((p plist))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
648 (while (and p (not (eq (car p) tag))) (setq p (cdr (cdr p))))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
649 (if p (progn (setcar (cdr p) val) plist) (list* tag val plist))))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
650
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
651 (defun cl-do-remf (plist tag)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
652 (let ((p (cdr plist)))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
653 (while (and (cdr p) (not (eq (car (cdr p)) tag))) (setq p (cdr (cdr p))))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
654 (and (cdr p) (progn (setcdr p (cdr (cdr (cdr p)))) t))))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
655
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
656 ;;; Hash tables.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
657
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
658 ;; The `regular' Common Lisp hash-table stuff has been moved into C.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
659 ;; Only backward compatibility stuff remains here.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
660 (defun make-hashtable (size &optional test)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
661 (make-hash-table :test test :size size))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
662 (defun make-weak-hashtable (size &optional test)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
663 (make-hash-table :test test :size size :weakness t))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
664 (defun make-key-weak-hashtable (size &optional test)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
665 (make-hash-table :test test :size size :weakness 'key))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
666 (defun make-value-weak-hashtable (size &optional test)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
667 (make-hash-table :test test :size size :weakness 'value))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
668
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
669 (define-obsolete-function-alias 'hashtablep 'hash-table-p)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
670 (define-obsolete-function-alias 'hashtable-fullness 'hash-table-count)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
671 (define-obsolete-function-alias 'hashtable-test-function 'hash-table-test)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
672 (define-obsolete-function-alias 'hashtable-type 'hash-table-type)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
673 (define-obsolete-function-alias 'hashtable-size 'hash-table-size)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
674 (define-obsolete-function-alias 'copy-hashtable 'copy-hash-table)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
675
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
676 (make-obsolete 'make-hashtable 'make-hash-table)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
677 (make-obsolete 'make-weak-hashtable 'make-hash-table)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
678 (make-obsolete 'make-key-weak-hashtable 'make-hash-table)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
679 (make-obsolete 'make-value-weak-hashtable 'make-hash-table)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
680 (make-obsolete 'hash-table-type 'hash-table-weakness)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
681
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
682 (when (fboundp 'x-keysym-hash-table)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
683 (make-obsolete 'x-keysym-hashtable 'x-keysym-hash-table))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
684
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
685 ;; Compatibility stuff for old kludgy cl.el hash table implementation
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
686 (defvar cl-builtin-gethash (symbol-function 'gethash))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
687 (defvar cl-builtin-remhash (symbol-function 'remhash))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
688 (defvar cl-builtin-clrhash (symbol-function 'clrhash))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
689 (defvar cl-builtin-maphash (symbol-function 'maphash))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
690
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
691 (defalias 'cl-gethash 'gethash)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
692 (defalias 'cl-puthash 'puthash)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
693 (defalias 'cl-remhash 'remhash)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
694 (defalias 'cl-clrhash 'clrhash)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
695 (defalias 'cl-maphash 'maphash)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
696
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
697 ;;; Some debugging aids.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
698
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
699 (defun cl-prettyprint (form)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
700 "Insert a pretty-printed rendition of a Lisp FORM in current buffer."
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
701 (let ((pt (point)) last)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
702 (insert "\n" (prin1-to-string form) "\n")
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
703 (setq last (point))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
704 (goto-char (1+ pt))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
705 (while (search-forward "(quote " last t)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
706 (delete-backward-char 7)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
707 (insert "'")
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
708 (forward-sexp)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
709 (delete-char 1))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
710 (goto-char (1+ pt))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
711 (cl-do-prettyprint)))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
712
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
713 (defun cl-do-prettyprint ()
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
714 (skip-chars-forward " ")
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
715 (if (looking-at "(")
1729
175ee2cb4d3a [xemacs-hg @ 2003-09-30 22:09:31 by youngs]
youngs
parents: 801
diff changeset
716 (let ((skip (or (looking-at "((")
175ee2cb4d3a [xemacs-hg @ 2003-09-30 22:09:31 by youngs]
youngs
parents: 801
diff changeset
717 (looking-at "(prog[nv12\\(ress-feedback\\|n-with-message\\)]")
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
718 (looking-at "(unwind-protect ")
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
719 (looking-at "(function (")
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
720 (looking-at "(cl-block-wrapper ")))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
721 (two (or (looking-at "(defun ") (looking-at "(defmacro ")))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
722 (let (or (looking-at "(let\\*? ") (looking-at "(while ")))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
723 (set (looking-at "(p?set[qf] ")))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
724 (if (or skip let
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
725 (progn
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
726 (forward-sexp)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
727 (and (>= (current-column) 78) (progn (backward-sexp) t))))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
728 (let ((nl t))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
729 (forward-char 1)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
730 (cl-do-prettyprint)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
731 (or skip (looking-at ")") (cl-do-prettyprint))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
732 (or (not two) (looking-at ")") (cl-do-prettyprint))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
733 (while (not (looking-at ")"))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
734 (if set (setq nl (not nl)))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
735 (if nl (insert "\n"))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
736 (lisp-indent-line)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
737 (cl-do-prettyprint))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
738 (forward-char 1))))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
739 (forward-sexp)))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
740
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
741 (defvar cl-macroexpand-cmacs nil)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
742 (defvar cl-closure-vars nil)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
743
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
744 (defun cl-macroexpand-all (form &optional env)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
745 "Expand all macro calls through a Lisp FORM.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
746 This also does some trivial optimizations to make the form prettier."
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
747 (while (or (not (eq form (setq form (macroexpand form env))))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
748 (and cl-macroexpand-cmacs
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
749 (not (eq form (setq form (compiler-macroexpand form)))))))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
750 (cond ((not (consp form)) form)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
751 ((memq (car form) '(let let*))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
752 (if (null (nth 1 form))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
753 (cl-macroexpand-all (cons 'progn (cddr form)) env)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
754 (let ((letf nil) (res nil) (lets (cadr form)))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
755 (while lets
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
756 (cl-push (if (consp (car lets))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
757 (let ((exp (cl-macroexpand-all (caar lets) env)))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
758 (or (symbolp exp) (setq letf t))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
759 (cons exp (cl-macroexpand-body (cdar lets) env)))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
760 (let ((exp (cl-macroexpand-all (car lets) env)))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
761 (if (symbolp exp) exp
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
762 (setq letf t) (list exp nil)))) res)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
763 (setq lets (cdr lets)))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
764 (list* (if letf (if (eq (car form) 'let) 'letf 'letf*) (car form))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
765 (nreverse res) (cl-macroexpand-body (cddr form) env)))))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
766 ((eq (car form) 'cond)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
767 (cons (car form)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
768 (mapcar (function (lambda (x) (cl-macroexpand-body x env)))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
769 (cdr form))))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
770 ((eq (car form) 'condition-case)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
771 (list* (car form) (nth 1 form) (cl-macroexpand-all (nth 2 form) env)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
772 (mapcar (function
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
773 (lambda (x)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
774 (cons (car x) (cl-macroexpand-body (cdr x) env))))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
775 (cdddr form))))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
776 ((memq (car form) '(quote function))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
777 (if (eq (car-safe (nth 1 form)) 'lambda)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
778 (let ((body (cl-macroexpand-body (cddadr form) env)))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
779 (if (and cl-closure-vars (eq (car form) 'function)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
780 (cl-expr-contains-any body cl-closure-vars))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
781 (let* ((new (mapcar 'gensym cl-closure-vars))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
782 (sub (pairlis cl-closure-vars new)) (decls nil))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
783 (while (or (stringp (car body))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
784 (eq (car-safe (car body)) 'interactive))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
785 (cl-push (list 'quote (cl-pop body)) decls))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
786 (put (car (last cl-closure-vars)) 'used t)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
787 (append
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
788 (list 'list '(quote lambda) '(quote (&rest --cl-rest--)))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
789 (sublis sub (nreverse decls))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
790 (list
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
791 (list* 'list '(quote apply)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
792 (list 'list '(quote quote)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
793 (list 'function
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
794 (list* 'lambda
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
795 (append new (cadadr form))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
796 (sublis sub body))))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
797 (nconc (mapcar (function
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
798 (lambda (x)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
799 (list 'list '(quote quote) x)))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
800 cl-closure-vars)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
801 '((quote --cl-rest--)))))))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
802 (list (car form) (list* 'lambda (cadadr form) body))))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
803 (let ((found (assq (cadr form) env)))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
804 (if (eq (cadr (caddr found)) 'cl-labels-args)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
805 (cl-macroexpand-all (cadr (caddr (cadddr found))) env)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
806 form))))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
807 ((memq (car form) '(defun defmacro))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
808 (list* (car form) (nth 1 form) (cl-macroexpand-body (cddr form) env)))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
809 ((and (eq (car form) 'progn) (not (cddr form)))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
810 (cl-macroexpand-all (nth 1 form) env))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
811 ((eq (car form) 'setq)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
812 (let* ((args (cl-macroexpand-body (cdr form) env)) (p args))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
813 (while (and p (symbolp (car p))) (setq p (cddr p)))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
814 (if p (cl-macroexpand-all (cons 'setf args)) (cons 'setq args))))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
815 (t (cons (car form) (cl-macroexpand-body (cdr form) env)))))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
816
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
817 (defun cl-macroexpand-body (body &optional env)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
818 (mapcar (function (lambda (x) (cl-macroexpand-all x env))) body))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
819
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
820 (defun cl-prettyexpand (form &optional full)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
821 (message "Expanding...")
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
822 (let ((cl-macroexpand-cmacs full) (cl-compiling-file full)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
823 (byte-compile-macro-environment nil))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
824 (setq form (cl-macroexpand-all form
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
825 (and (not full) '((block) (eval-when)))))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
826 (message "Formatting...")
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
827 (prog1 (cl-prettyprint form)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
828 (message ""))))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
829
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
830
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
831
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
832 (run-hooks 'cl-extra-load-hook)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
833
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
834 (provide 'cl-extra)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
835
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
836 ;;; cl-extra.el ends here